Position adjusting device, cutting system and mower

Abstract

The embodiment of the utility model provides a position adjusting device, a cutting system and a mower. The position adjusting device comprises at least two supporting arms, at least two transverse guiding pieces, a support, a driving unit and a transverse driving assembly. The number of the transverse guiding pieces is consistent with that of the supporting arms, and the transverse guiding pieces and the supporting arms are in one-to-one correspondence. The at least two supporting arms are arranged at intervals in the vertical direction. And in the length direction of the transverse guide piece, the two sub support arms of each support arm are arranged at an interval to form a containing part. And one end of each sub-supporting arm is rotatably connected with the support. And the other end of each sub supporting arm is rotationally connected with the corresponding transverse guide piece. The upper sub-supporting arm and the lower sub-supporting arm are relatively fixed, and / or the two transverse guiding pieces are relatively fixed. The cutting device is connected to the at least one transverse guide piece. The transverse driving assembly is connected to the cutting device. The driving unit is used for driving the two supporting arms to rotate relative to the support.

Description

[0001] This application claims the priority of Chinese patent applications filed with the China National Intellectual Property Administration on April 9, 2024, with application number 202420724270.6, titled "Lawn Mower", and application number 202410424006.5, titled "Lawn Mower", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the technical field of lawn mowing equipment, and particularly to a position adjustment device, a cutting system, and a lawn mower. Background Art

[0003] In some areas of people's lives, lawns are usually set up to improve the environmental beauty and comfort. Lawns need to be cut and maintained periodically to keep the lawn height from being too high. Currently, lawn mowers are usually used to cut and trim lawns. The lawn mower can be a self-propelled device. In the case of no one operating, the lawn mower can automatically complete the cutting and trimming work of the lawn. However, in the prior art, the cutter head of the lawn mower is set at the central position of the lawn mower. For general lawns, the mowing area of the lawn mower is determined by the travel route of the lawn mower, and the cutter head cannot adjust its own mowing position, resulting in limited mowing efficiency. For lawns with physical fences around, when the lawn mower walks close to the physical fence, the cutter head cannot cut the part of the lawn between the cutter head and the physical fence, resulting in a relatively large area of the lawn remaining near the physical fence and requiring manual secondary trimming. For open lawns, when the lawn mower walks close to the lawn boundary, the cutter head cannot cut the part of the lawn between the cutter head and the lawn boundary, resulting in a relatively large area of the lawn remaining near the boundary and requiring manual secondary trimming. Summary of the Utility Model

[0004] The embodiments of this application provide a position adjustment device, a cutting system, and a lawn mower, which are beneficial to improving the cutting efficiency and cutting effect.

[0005] In the first aspect of the embodiments of this application, a position adjustment device is provided for adjusting the position of the cutting device of a lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a drive unit, and a lateral drive assembly.

[0006] The number of the lateral guides is the same as and corresponds one-to-one to the number of the support arms. At least two support arms are arranged at intervals in the vertical direction. Each support arm includes two sub-support arms. Along the length direction of the lateral guide, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion. One end of each sub-support arm is respectively rotatably connected to the support, and the other end of each sub-support arm is respectively rotatably connected to the end of the corresponding lateral guide.

[0007] The upper sub-support arm and the lower sub-support arm are relatively fixed, and / or at least two lateral guide members are relatively fixed.

[0008] The cutting device is connected to at least one lateral guide member. The cutting device includes a cutter head. The lateral drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the lateral guide member. The drive unit is used to drive at least two support arms to rotate relative to the support base to perform a height adjustment action to adjust the ground height of the cutting device.

[0009] The rotation speed of the cutter head in the first state is greater than or equal to the rotation speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of performing the moving action.

[0010] When the position adjustment device in the embodiment of the present application is applied to a lawn mower, the cutting device can be connected to the lateral guide member in the position adjustment device. The position adjustment device can be used to adjust the position of the cutting device through the support arm, the support base, the drive unit and the lateral guide member. Under the mutual cooperation of the support arm, the support base, the drive unit and the lateral guide member, the cutting device can move vertically in the vertical direction. In addition, the lateral drive assembly drives the cutting device to move along the lateral guide member, so that the cutting device moves in the length direction of the lateral guide member. By driving the cutting device to move laterally through the lateral drive assembly, it is beneficial to realize the automatic adjustment of the position of the cutting device, improve the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0011] Each support arm is relatively fixed; and / or each lateral guide member is relatively fixed. A link structure relationship can be formed among the support base, each support arm, and each lateral guide member, which is beneficial to further improve the connection stability among the support base, the support arm, and the lateral guide member and the position stability during the rotation of the cutting device relative to the support arm.

[0012] Through the position adjustment device, the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower remain unchanged, by using the above-mentioned position adjustment device, the lawn mower can obtain a larger mowing range, improving the working efficiency of the lawn mower.

[0013] When the position adjustment device is applied to a lawn mower, a part of the cutting device can pass through the accommodating part to effectively utilize the space between the two sub-support arms, which is beneficial to improving the structural compactness, reducing the overall volume, and occupying less space.

[0014] The end of the lateral guide is connected to the support arm. When the support arm consists of two sub - support arms, the connection between the cutting device and the lateral guide remains within the movement range between the two sub - support arms, without moving outside the sub - support arms, avoiding the situation of center - of - gravity deviation and ensuring the stability of the overall structure.

[0015] In some realizable ways, at least one support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one lateral guide is connected to the drive unit.

[0016] The support arm is connected to the drive unit. The drive unit drives the support arm to rotate up and down, further driving the cutting device to move up and down to realize the height adjustment of the cutting device. By using the connection method between the support arm and the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0017] The cutting device is connected to the drive unit. The drive unit is directly connected to the cutting device without the need for other structures or components to transfer force. The force exerted by the drive unit on the cutting device does not need to be very large to complete the lifting and lowering, which is convenient for operation.

[0018] The lateral guide is connected to the drive unit. As an intermediate connection structure between the support arm and the cutting device, the movement of the lateral guide drives the support arm and the cutting device to move. Without excessive structures and components for force transfer, the stability of the movement state is ensured.

[0019] In some realizable ways, the uppermost support arm is connected to the drive unit.

[0020] The drive unit is connected to one support arm, and it can drive the two support arms to rotate synchronously relative to the support base at the same time. Therefore, a connection structure can be set between the drive unit and the upper support arm, which is beneficial to reducing the design difficulty of the connection structure between the drive unit and the two support arms.

[0021] In some realizable ways, at least two lateral guides are respectively connected to the cutting device.

[0022] At least two lateral guides are respectively connected to the cutting device. A four - bar linkage structure relationship can be formed among the support base, each support arm, each lateral guide, and the cutting device, which is beneficial to further improving the connection stability among the support base, support arm, lateral guide, and cutting device. Each lateral guide is respectively connected to the cutting device, realizing the relative fixation of each lateral guide through the cutting device, eliminating the need for additional fixing parts to connect each lateral guide or each support arm, saving the cost of accessories. At the same time, based on the result of the linkage structure relationship, it is ensured that the angle between the cutter head and the ground remains consistent during the height adjustment of the cutting device.

[0023] In some implementable ways, at least two support arms are connected to each other; and / or, at least two lateral guides are connected to each other.

[0024] Each of the support arms is connected to each other. The support arms are connected by an additionally provided connecting member. A link structure relationship can be formed among the support, each support arm, each lateral guide, and the connecting member, which is beneficial to further improve the connection stability among the support, the support arm, the lateral guide, and the connecting member, as well as the position stability during the rotation of the cutting device relative to the support arm.

[0025] A second aspect of the embodiments of the present application provides a position adjustment device for adjusting the position of a cutting device of a lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a driving unit, and a lateral driving assembly.

[0026] The number of lateral guides is the same as and corresponds one-to-one to the number of the support arms. At least two support arms are arranged at intervals in the vertical direction. Each support arm includes a lateral connecting arm and two sub-support arms, and each of the two sub-support arms includes a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the lateral connecting arm, and the second sub-support arm is arranged on the other side of the lateral connecting arm. The end portions of the first sub-support arms of each support arm are respectively rotatably connected to the support. The end portion of the lateral guide is rotatably connected to the end portion of the second sub-support arm of the corresponding support arm.

[0027] At least two support arms are relatively fixed; and / or, at least two lateral guides are relatively fixed.

[0028] The cutting device is connected to at least one lateral guide. The cutting device includes a cutter head. The lateral driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the lateral guide. The driving unit is used to drive at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the ground height of the cutting device.

[0029] The rotation speed of the cutter head in the first state is greater than or equal to the rotation speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of performing the moving action.

[0030] In each support arm, the number of the first sub-support arms is two. The two first sub-support arms are arranged at intervals in the length direction of the lateral guide.

[0031] In each support arm, the number of the second sub-support arms is two. The two second sub-support arms are arranged at intervals in the length direction of the lateral guide. An accommodating portion is formed between the two second sub-support arms.

[0032] When the position adjustment device according to the embodiment of the present application is applied to a lawn mower, the cutting device can be connected to the lateral guide member in the position adjustment device. The position adjustment device can be used to adjust the position of the cutting device through a support arm, a support, a driving unit, and a lateral guide member. Under the mutual cooperation of the support arm, the support, the driving unit, and the lateral guide member, the cutting device can move vertically in the vertical direction. In addition, the lateral driving assembly drives the cutting device to move on the lateral guide member, so that the cutting device moves in the length direction of the lateral guide member. By driving the cutting device to move laterally through the lateral driving assembly, it is beneficial to realize the automatic adjustment of the position of the cutting device, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0033] Each support arm is relatively fixed. And / or, each lateral guide member is relatively fixed. A link structure relationship can be formed among the support, each support arm, and each lateral guide member, which is beneficial to further improve the connection stability among the support, the support arm, and the lateral guide member, and the position stability during the rotation of the cutting device relative to the support arm.

[0034] Adopting the installation structure in which the support arm is connected to the lateral guide member reduces the space occupied by the position adjustment device and the cutting device as a whole inside the fuselage while realizing the position adjustment of the cutting device, which helps to realize the intelligence and miniaturization of the lawn mower.

[0035] Through the position adjustment device, the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower remain unchanged, by adopting the above-mentioned position adjustment device, the lawn mower can obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0036] When the position adjustment device is applied to a lawn mower, a part of the cutting device can pass through the accommodating part to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the structural compactness, reducing the overall volume, and occupying less space.

[0037] In some feasible ways, at least a part of the driving unit can be located between the two first sub-support arms to effectively utilize the space between the two first sub-support arms, which is beneficial to improving the structural compactness of the overall position adjustment device, reducing the overall volume, and occupying less space.

[0038] In some feasible ways, at least one support arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or at least one lateral guide member is connected to the driving unit.

[0039] The support arm is connected to the drive unit. The drive unit drives the support arm to rotate up and down, further driving the cutting device to move up and down, realizing the height adjustment of the cutting device. By adopting the connection mode of the support arm and the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0040] The cutting device is connected to the drive unit. The drive unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the drive unit on the cutting device does not need to be very large to complete the lifting and lowering, and the operation is convenient.

[0041] The lateral guide is connected to the drive unit. As an intermediate connection structure between the support arm and the cutting device, the lateral guide drives the support arm and the cutting device to move through its movement, without the need for too many structures and components to transmit force, ensuring the stability of the movement state.

[0042] In some realizable ways, the lateral connecting arm of the uppermost support arm is connected to the drive unit.

[0043] The drive unit is connected to one support arm, and can simultaneously drive two support arms to rotate synchronously relative to the support. Therefore, a connection structure can be set between the drive unit and the upper support arm, which is beneficial to reducing the design difficulty of the connection structure between the drive unit and the two support arms.

[0044] By applying a torque to the lateral connecting arm, the first sub-support arm can be driven to rotate relative to the support, and at the same time, the second sub-support arm drives the driver to move vertically. The lateral connecting arm, as a force-bearing structure, is located between the first sub-support arm and the second sub-support arm, which is beneficial to improving the overall structural compactness of the support arm and occupying less space.

[0045] In some realizable ways, at least two lateral guides are respectively connected to the cutting device.

[0046] Each lateral guide is respectively connected to the cutting device. A link structure relationship can be formed between the support, each support arm, each lateral guide, and the cutting device, which is beneficial to further improving the connection stability between the support, the support arm, the lateral guide, and the cutting device. Each lateral guide is respectively connected to the cutting device, and the relative fixation of each lateral guide is realized through the cutting device, eliminating the need for additional fixing parts to connect each lateral guide or each support arm, saving the fitting cost. At the same time, based on the result of the link structure relationship, it is ensured that the angle between the cutter head and the ground remains consistent during the height adjustment of the cutting device.

[0047] In some realizable ways, at least two support arms are connected to each other; and / or, at least two lateral guides are connected to each other.

[0048] The respective support arms are connected to each other. The respective support arms are connected by additionally provided connecting members. A linkage structure relationship can be formed among the support, the respective support arms, the respective lateral guides, and the connecting members, which is conducive to further improving the connection stability among the support, the support arms, the lateral guides, and the connecting members, as well as the position stability during the rotation of the cutting device relative to the support arms.

[0049] The respective lateral guides are connected to each other. The respective lateral guides are connected by additionally provided connecting members. A linkage structure relationship can be formed among the support, the respective support arms, the respective lateral guides, and the connecting members, which is conducive to further improving the connection stability among the support, the support arms, the lateral guides, and the connecting members, as well as the position stability during the rotation of the cutting device relative to the support arms.

[0050] In some implementable ways, the number of supports is two. Along the length direction of the lateral guide, the two supports are spaced apart. The end portions of the two first sub-support arms are respectively rotatably connected to the supports. At least a part of the drive unit is located between the two supports.

[0051] At least a part of the drive unit is located between the two supports to effectively utilize the space between the two supports, which is conducive to improving the compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying less space.

[0052] In some implementable ways, the lateral guide includes a first end and a second end. The first end and the second end are respectively rotatably connected to two second sub-support arms. The cutting device moves between the first end and the second end.

[0053] The cutting device moves between the ends of the lateral guide, further increasing the adjustment range of the cutting device in the horizontal direction. Based on this, when the moving direction and moving path of the lawn mower remain unchanged, the lawn mower can obtain a larger mowing range, improving the working efficiency of the lawn mower.

[0054] The third aspect of the embodiments of the present application provides a position adjustment device for adjusting the position of the cutting device of a lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a drive unit, and a lateral drive assembly.

[0055] The number of lateral guides is the same as and corresponds one by one to the number of support arms. At least two support arms are spaced apart in the vertical direction. Each support arm includes two sub-support arms. Along the length direction of the lateral guide, the two sub-support arms of each support arm are spaced apart to form a receiving portion. One end of each sub-support arm is respectively rotatably connected to the support. The other end of each sub-support arm is respectively rotatably connected to the end of the corresponding lateral guide.

[0056] The upper sub-support arm and the lower sub-support arm are relatively fixed, and / or at least two lateral guide members are relatively fixed.

[0057] The two uppermost sub-support arms are connected by a lateral connecting arm. The cutting device is connected to at least one lateral guide member. The cutting device includes a cutter head. The lateral driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the lateral guide member. The driving unit is used to drive at least two support arms to rotate relative to the support seat to perform a height adjustment action to adjust the ground height of the cutting device.

[0058] The rotation speed of the cutter head in the first state is greater than or equal to the rotation speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of performing the moving action.

[0059] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be connected to the lateral guide member in the position adjustment device. The position adjustment device can be used to adjust the position of the cutting device through the support arm, the support seat, the driving unit and the lateral guide member. Under the mutual cooperation of the support arm, the support seat, the driving unit and the lateral guide member, the cutting device can move vertically in the vertical direction. In addition, the lateral driving assembly drives the cutting device to move on the lateral guide member so that the cutting device moves in the length direction of the lateral guide member. By driving the cutting device to move laterally through the lateral driving assembly, it is beneficial to realize the automatic adjustment of the position of the cutting device, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0060] Each support arm is relatively fixed; and / or each lateral guide member is relatively fixed. A link structure relationship can be formed between the support seat, each support arm and each lateral guide member, which is beneficial to further improve the connection stability between the support seat, the support arm and the lateral guide member and the position stability during the rotation of the cutting device relative to the support arm.

[0061] Adopting the installation structure in which the support arm is connected to the lateral guide member, while realizing the position adjustment of the cutting device, the space occupied by the position adjustment device and the cutting device as a whole inside the fuselage is reduced, which helps to realize the intelligence and miniaturization of the lawn mower.

[0062] Through the position adjustment device, the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower remain unchanged, by adopting the above-mentioned position adjustment device, the lawn mower obtains a larger mowing range and improves the working efficiency of the lawn mower.

[0063] In some feasible embodiments, at least one support arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or at least one lateral guide is connected to the driving unit.

[0064] The support arm is connected to the driving unit. The driving unit drives the support arm to rotate up and down, further driving the cutting device to move up and down to realize the height adjustment of the cutting device. By adopting the connection mode between the support arm and the driving unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0065] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the driving unit on the cutting device does not need to be very large to complete the lifting and lowering, and the operation is convenient.

[0066] The lateral guide is connected to the driving unit. The lateral guide is used as an intermediate connection structure between the support arm and the cutting device. The movement of the lateral guide drives the support arm and the cutting device to move, without the need for too many structures and components to transmit force, ensuring the stability of the movement state.

[0067] In some feasible embodiments, the lateral connecting arm is connected to the driving unit.

[0068] By applying a torque to the lateral connecting arm, the sub-support arm can be driven to rotate relative to the support, and at the same time, the sub-support arm drives the driver to move vertically. The lateral connecting arm, as a force-bearing structure, is located between the two sub-support arms, which is beneficial to improving the overall structural compactness of the support arm and occupying less space.

[0069] In some feasible embodiments, at least two lateral guides are respectively connected to the cutting device.

[0070] Each lateral guide is respectively connected to the cutting device. A link structure relationship can be formed between the support, each support arm, each lateral guide, and the cutting device, which is beneficial to further improving the connection stability between the support, the support arm, the lateral guide, and the cutting device. Each lateral guide is respectively connected to the cutting device, and the relative fixation of each lateral guide is realized through the cutting device, eliminating the need for additional fixing parts for connecting each lateral guide or each support arm, saving the cost of accessories. At the same time, based on the result of the link structure relationship, it is ensured that the angle between the cutter head and the ground remains consistent during the height adjustment of the cutting device.

[0071] In some feasible embodiments, at least two support arms are connected to each other; and / or at least two lateral guides are connected to each other.

[0072] The respective support arms are connected to each other. The respective support arms are connected by additionally provided connecting components. A link structure relationship can be formed among the support, the respective support arms, the respective lateral guides, and the connecting components, which is conducive to further improving the connection stability among the support, the support arms, the lateral guides, and the connecting components, as well as the position stability during the rotation of the cutting device relative to the support arms.

[0073] The respective lateral guides are connected to each other. The respective lateral guides are connected by additionally provided connecting components. A link structure relationship can be formed among the support, the respective support arms, the respective lateral guides, and the connecting components, which is conducive to further improving the connection stability among the support, the support arms, the lateral guides, and the connecting components, as well as the position stability during the rotation of the cutting device relative to the support arms.

[0074] In some realizable ways, the number of supports is two. Along the length direction of the lateral guide, the two supports are arranged at intervals. The end parts of the two sub-support arms of each support arm are respectively rotatably connected to the supports. A part of the drive unit is located between the two supports.

[0075] At least a part of the drive unit is located between the two supports to effectively utilize the space between the two supports, which is conducive to improving the compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying less space.

[0076] In some realizable ways, the drive unit includes a cam. The cam includes a helical surface. The support arm is connected to the drive unit. The support arm abuts against the helical surface.

[0077] The helical surface of the cam is a continuous surface, which is conducive to improving the motion stability during the swinging of the support arm relative to the support, and reducing the possibility of impact and jerks between the support arm and the cam.

[0078] In some realizable ways, the drive unit includes a cam. The cam includes a helical surface. The cutting device is connected to the drive unit. The cutting device abuts against the helical surface.

[0079] The helical surface of the cam is a continuous surface, which is conducive to improving the stability of the cutting device during movement, and reducing the possibility of impact and jerks between the cutting device and the cam.

[0080] In some realizable ways, the drive unit includes a cam. The cam includes a helical surface. The lateral guide is connected to the drive unit. The lateral guide abuts against the helical surface.

[0081] The helical surface of the cam is a continuous surface, which is conducive to improving the stability of the lateral guide during movement, and reducing the possibility of impact and jerks between the lateral guide and the cam.

[0082] In some implementable ways, the driving unit includes a cam. The cam includes a helical surface. The support arm is connected to the driving unit. The support arm abuts against the helical surface. The cutting device is connected to the driving unit. The cutting device abuts against the helical surface. The lateral guide is connected to the driving unit. The lateral guide abuts against the helical surface.

[0083] In some implementable ways, the lateral guide is a circular shaft, and the end of the lateral guide is connected to the end of the support arm.

[0084] The lateral guide is a circular shaft. A rotational connection can be formed between the lateral guide and the support arm, eliminating the need for an additional circular rotating fitting, reducing the assembly difficulty and cost.

[0085] In some implementable ways, the lateral driving assembly includes a deflection cam. The deflection cam is used to connect to the cutting device. The deflection cam is used to drive the cutting device to slide on the lateral guide.

[0086] The deflection cam can provide a stable driving force for the cutting device to ensure a stable sliding process of the cutting device on the lateral guide.

[0087] In some implementable ways, the lateral driving assembly includes a lead screw and an adapter. The lead screw is threadedly connected to the adapter. The adapter is used to connect to the cutting device. The lead screw and the adapter are used to drive the cutting device to move relative to the lateral guide.

[0088] The threaded connection between the lead screw and the adapter is conducive to ensuring the smooth movement of the adapter and the displacement accuracy of the adapter, thereby facilitating the smooth movement and displacement accuracy of the cutting device.

[0089] In some implementable ways, the lateral driving assembly includes a telescopic rod and an adapter. The telescopic rod is connected to the adapter. The adapter is used to connect to the cutting device. The telescopic rod and the adapter are used to drive the cutting device to move relative to the lateral guide.

[0090] The connection between the telescopic rod and the adapter is conducive to ensuring the smooth movement of the adapter and the displacement accuracy of the adapter, thereby facilitating the smooth movement and displacement accuracy of the cutting device.

[0091] In some implementable ways, after the moving action and the height adjustment action are completed and the cutting device is started, the rotational speed of the cutter head is increased to 1800 - 3500 revolutions per minute in a non-grass jamming state.

[0092] In the embodiments of the present application, after the moving action and the height adjustment action are completed and the cutting device is started, the rotational speed of the cutter head cannot be lower than 1800 revolutions per minute. Otherwise, when the vegetation contacts the blade, the force received is too small to smoothly cut the vegetation, and it is easy to have the situation of grass jamming. Even, the cutter head may stop rotating due to grass jamming, which may also lead to missed cutting. The resistance of the grass to the cutter head will also be greater, resulting in jamming. When the rotational speed of the cutter head is between 1800 revolutions per minute and 3500 revolutions per minute, it is an ideal cutting state. If the rotational speed of the cutter head is further increased, it will basically maintain near the corresponding cutting efficiency. Even, too fast a rotational speed cannot form sufficient contact with the grass surface, and the cutting effect will become slightly worse. At the same time, the rotational speed during cutting cannot be greater than 3500 revolutions per minute. Higher than this rotational speed will generate greater noise due to the cutter head rotating too fast, bringing more unnecessary energy consumption, and the safety factor will decrease while the danger factor will increase. Therefore, maintaining the rotational speed of the cutter head at 1800 - 3500 revolutions per minute is an ideal cutting state. The rotational speed of the cutter head will also affect the service life of the blade. Before the rotational speed of the cutter head reaches 1800 revolutions per minute, it is basically in a non-cutting state, and the blade can maintain a relatively stable service life. When the rotational speed of the cutter head reaches 1800 revolutions per minute, it enters the working state of cutting vegetation, and the service life of the blade begins to decline. When the rotational speed of the cutter head exceeds 1800 revolutions per minute, the service life of the blade significantly decreases. Too fast a rotational speed is likely to form negative pressure, sucking particulate foreign matters (such as small stones, etc.) outside the vegetation to the blade of the cutter head, causing damage to the cutting edge, thereby affecting the service life of the cutter head. Therefore, maintaining the rotational speed of the cutter head at 1800 - 3500 revolutions per minute is an ideal cutting state, and at this time, the service life of the cutter head also maintains within a normal wear expectation.

[0093] In some realizable ways, the rotational speed of the cutter head in the first state is greater than or equal to the rotational speed of the cutter head in the third state, and the third state is the state of performing the height adjustment action.

[0094] In some realizable ways, the rotational speed of the cutter head in the second state is 0.

[0095] In some realizable ways, the rotational speed of the cutter head in the third state is 0.

[0096] In some realizable ways, the rotational speed of the cutter head in the second state is equal to the rotational speed of the cutter head in the third state.

[0097] In the fourth aspect of the embodiments of the present application, a cutting system for a lawn mower is provided. The cutting system includes a cutting device and a position adjustment device.

[0098] The cutting device includes a driver and a cutter head. The cutter head is connected to the output end of the driver. The driver is used to drive the cutter head to rotate. The cutter head is used for mowing grass.

[0099] The driver is connected to the position adjustment device. The position adjustment device is used to drive the driver to perform a lateral movement action so that the cutting device moves between the center position and the side cutting position, and the position adjustment device is used to drive the driver to perform a height adjustment action to adjust the height of the driving cutting device above the ground. The rotation speed of the cutter disc in the fourth state is greater than or equal to the rotation speed of the cutter disc in the fifth state. The fourth state is a state after the lateral movement action is completed and the driver is started, and the fifth state is a state in which the driver performs the lateral movement action. The cutter disc is used for mowing.

[0100] When the cutting system of the embodiment of the present application is applied to a lawn mower, the position adjustment device in the cutting system can adjust the position of the cutting device. Under the driving action of the position adjustment device, the cutting device can move between the center position and the side cutting position. When the cutting device is in the side cutting position, the cutting device can trim the area close to the lawn boundary, which helps to avoid a large area of ​​uncut lawn remaining at the lawn boundary. At the same time, the lawn mower protects the blade disc through the blade disc cover, and there is no need to set up an additional bottom protective plate. The blade disc cover of the lawn mower will not overwhelm the lawn, which helps to improve cutting efficiency and cutting effect.

[0101] When the rotation speed of the blade disc in the fourth state is greater than the rotation speed of the blade disc in the fifth state, the rotation speed of the blade disc when the cutting device performs the lateral movement action is less than the rotation speed of the blade disc when the cutting device is working. On the one hand, the interference caused by the high-speed rotation of the blade disc to the lateral movement of the driver can be reduced, the shaking of the cutting device during the lateral movement can be effectively reduced, and the stability of the driver's movement process can be improved; on the other hand, the resistance encountered by the driver during the lateral movement process can be reduced, saving energy consumption; on the other hand, the lateral movement action is performed to adjust the cutting position of the blade disc, such as adjusting the blade disc from the center position to the side cutting position. During the process of adjusting the cutting position of the blade disc, there are often people or animals around, causing safety hazards. At this time, an alarm sound needs to be sounded to drive people or animals away. The faster the blade disc speed, the greater the noise emitted by the lawn mower. Excessive noise will block the alarm sound, and people or animals cannot be driven away normally, affecting the normal progress of mowing. When the blade disc speed is less than the blade disc speed during normal mowing, the noise emitted by the blade disc rotation is small, and the noise will not block the alarm sound, which can ensure the smooth removal of living obstacles.

[0102] When the rotation speed of the blade disc in the fourth state is equal to the rotation speed of the blade disc in the fifth state, when the driver is performing a lateral movement, the rotation speed of the blade disc is consistent with the rotation speed during mowing. On the one hand, the speed-up and speed-down actions of the driver can be reduced, and the speed of adjusting the position of the cutting device can be increased, thereby improving the working efficiency of the lawn mower; on the other hand, the speed-up and speed-down actions of the driver are reduced, which can reduce the load on the motor and increase the service life of the motor.

[0103] In some implementable ways, the rotational speed of the cutter head in the fourth state is greater than or equal to the rotational speed of the cutter head in the sixth state, and the sixth state is the state where the driver performs the height adjustment action.

[0104] When the rotational speed of the cutter head in the fourth state is greater than the rotational speed of the cutter head in the sixth state, the rotational speed of the cutter head when the driver performs the height adjustment action is less than the rotational speed of the cutter head when the driver starts. On the one hand, it can reduce the interference caused by the high-speed rotation of the cutter head to the movement of the driver, effectively reduce the shaking during the movement of the cutting device, and improve the stability of the movement process of the cutting device; on the other hand, it can reduce the resistance received during the movement of the driver and save energy consumption. When the rotational speed of the cutter head in the fourth state is equal to the rotational speed of the cutter head in the sixth state, when the driver performs the height adjustment action, the rotational speed of the cutter head is consistent with the rotational speed of the cutter head during mowing work. On the one hand, it can reduce the acceleration and deceleration actions of the driver, improve the speed of position adjustment of the cutting device, and thus improve the working efficiency of the lawn mower; on the other hand, the reduction of the acceleration and deceleration actions of the driver can reduce the load on the motor and improve the service life of the motor.

[0105] In some implementable ways, the state in which the driver performs the lateral movement is the fifth state, and the rotational speed of the cutter head in the fifth state is 0.

[0106] When the cutting device performs the position adjustment action, the cutter head stops rotating, which can minimize the shaking when the cutting device performs the position adjustment action and ensure the stability of the movement process of the cutting device. At the same time, when the rotational speed of the cutter head is 0, the cutter head will not make noise due to rotation. When it is necessary to drive away people or animals, the cutter head will not block any alarm sound, and it can ensure that the alarm sound reaches people or animals and ensure the smooth driving away of people or animals.

[0107] In some implementable ways, the state in which the driver performs the height adjustment action is the sixth state, and the rotational speed of the cutter head in the sixth state is 0.

[0108] When the cutting device performs the position adjustment action, the cutter head stops rotating, which can minimize the shaking when the cutting device performs the position adjustment action and ensure the stability of the movement process of the cutting device. At the same time, when the rotational speed of the cutter head is 0, the cutter head will not make noise due to rotation. When it is necessary to drive away people or animals, the cutter head will not block any alarm sound, and it can ensure that the alarm sound reaches people or animals and ensure the smooth driving away of people or animals.

[0109] In some implementable ways, the rotational speed of the cutter head in the fifth state is equal to the rotational speed of the cutter head in the sixth state.

[0110] The rotational speed of the cutter head in the fifth state is equal to that in the sixth state. If the driver continuously performs lateral movement actions and height adjustment actions, before the next action is entered after the previous action is completed, there is no need to adjust the rotational speed of the cutter head, which improves the rate of position adjustment and thus the working efficiency of the lawn mower.

[0111] In some implementable ways, the cutting device further includes a cutter head cover. The cutter head cover is connected to the driver. Vertically, the cutter head is disposed below the cutter head cover. The cutter head cover includes two flanges. The flanges have a second lower edge. The two flanges are spaced apart horizontally along the lawn mower. The cutter head is disposed between the two flanges.

[0112] The two flanges can form protection for the cutter head on both sides of the cutter head, effectively reducing the exposed area of the cutter head, which is beneficial to improving the safety of the cutting device.

[0113] In some implementable ways, the cutter head cover has a bottom opening. The bottom opening avoids the cutter head. The size of the bottom opening is larger than the diameter of the cutter head.

[0114] The bottom opening of the cutter head cover completely avoids the cutter head, so that vertically, the lower part of the cutter head is not blocked by the cutter head cover. The lawn can also enter the cutter head cover through the bottom opening and be cut by the cutter head inside the cutter head cover. Therefore, the cutter head cover will not crush the lawn, ensuring that the cutter head can smoothly cut the lawn. The cutting efficiency and cutting effect are improved.

[0115] In some implementable ways, the cutter head cover has a second lower edge. The cutter head includes blades. Vertically, the minimum vertical distance between the lower surface of the blade and the second lower edge of the cutter head cover is greater than 3 mm.

[0116] The greater the vertical distance between the lower surface of the blade and the second lower edge of the cutter head cover, the greater the distance between the finger of the operator caught inside the cutter head cover during the handling of the lawn mower and the cutter head, so that the finger of the operator is less likely to touch the cutter head. When the minimum vertical distance between the lower surface of the blade and the second lower edge is greater than or equal to 3 mm, it is ensured that the finger of the operator will not touch the cutter head during the handling process.

[0117] In some implementable ways, the cutter head cover has a second lower edge. The cutter head includes blades. Vertically, the maximum vertical distance between the lower surface of the blade and the second lower edge of the cutter head cover is less than or equal to 15 mm.

[0118] When the height of the cutter head is fixed, the greater the vertical distance between the lower surface of the blade and the second lower edge of the cutter head cover, the smaller the distance between the second lower edge of the cutter head cover and the ground, and the worse the obstacle-crossing performance of the lawn mower.

[0119] In some implementable ways, the position adjustment device includes a height adjustment component and a lateral drive component. The driver is slidably connected to the height adjustment component. The height adjustment component is used to drive the cutting device to move vertically. The lateral drive component is used to drive the driver to move laterally.

[0120] The height adjustment component, the cutting device, and the lateral drive component are connected to each other to form an integral structure. The cutting device is driven to move through the coordinated cooperation between the lateral drive component and the height adjustment component. The lateral drive component and the height adjustment component are independently arranged, which is beneficial to reducing the structural complexity of the position adjustment device and the manufacturing difficulty of the position adjustment device.

[0121] In some implementable ways, the height adjustment component includes a support arm, a drive unit, a support, and a lateral guide. The support arm is rotatably connected to the support. The lateral guide is connected to the support arm. The driver is slidably connected to the support arm and the driver is rotatably connected to the support arm. The drive unit is used to drive the support arm to rotate relative to the support to adjust the height of the lateral guide. The lateral guide is used to connect to the cutting device so that the cutting device moves in the length direction of the lateral guide.

[0122] When the drive unit drives the support arm to rotate relative to the support, the cutting device also rotates relative to the support, so that the support arm drives the cutting device to adjust the height. The cutting device moves along the length direction of the lateral guide, realizing the adjustment of the lateral position of the cutting device.

[0123] Adopting the installation structure in which the support arm and the lateral guide are connected to each other reduces the space occupied by the position adjustment device and the cutting device as a whole inside the fuselage while realizing the position adjustment of the cutting device, which helps to realize the intelligence and miniaturization of the lawn mower.

[0124] Through the position adjustment device, the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower remain unchanged, by adopting the above-mentioned position adjustment device, the lawn mower can obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0125] The connection method between the driver and the support arm through the lateral guide is beneficial to reducing the design difficulty of the connection structure between the driver and the support arm and the disassembly and assembly difficulty between the driver and the support arm, and reducing the processing cost and maintenance cost.

[0126] In some implementable ways, the support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the lateral guide is connected to the drive unit.

[0127] The support arm is connected to the drive unit. The drive unit drives the support arm to rotate up and down, further driving the cutting device to move up and down, so as to realize the height adjustment of the cutting device. By adopting the connection mode of the support arm and the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0128] The cutting device is connected to the drive unit. The drive unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the drive unit on the cutting device does not need to be very large to complete the lifting and lowering, and the operation is convenient.

[0129] The lateral guide is connected to the drive unit. As an intermediate connection structure between the support arm and the cutting device, the lateral guide drives the support arm and the cutting device to move through its movement, without the need for excessive structures and components to transmit force, ensuring the stability of the motion state.

[0130] In some feasible ways, the support arm is rotatably connected to the support base through a horizontal shaft. The support arm includes a first connecting portion. There is a spacing between the first connecting portion and the horizontal shaft. The lateral guide is connected to the first connecting portion.

[0131] The connection mode between the support arm and the support base through the horizontal shaft is beneficial to reducing the structural design difficulty and disassembly and assembly difficulty of forming a rotating pair between the support arm and the support base, and reducing the processing cost and maintenance cost. The cutting device can rotate relative to the horizontal shaft. Since the distance between the cutting device and the horizontal shaft is relatively far, when the support arm rotates at a small angle relative to the horizontal shaft, the support arm can drive the cutting device to move a relatively large distance in the vertical direction, which is beneficial to improving the vertical position adjustment efficiency of the cutting device.

[0132] In some feasible ways, the support arm includes a second connecting portion. There is a spacing between the second connecting portion and the horizontal shaft. The drive unit is connected to the second connecting portion. The first connecting portion is located on the side of the second connecting portion away from the horizontal shaft.

[0133] The second connecting portion is located on the side of the horizontal shaft facing the first connecting portion, making the overall structure formed by the drive unit and the support arm relatively compact and occupying less space.

[0134] In some feasible ways, a receiving portion is formed between the support arm and the lateral guide. The driver is disposed through the receiving portion.

[0135] The driver is disposed through the receiving portion of the support arm, that is, the support arm is sleeved outside the driver, so that the driver can reuse the receiving portion of the support arm, effectively improving the structural compactness of the cutting system, reducing the overall volume and occupying less space.

[0136] In some implementable ways, the support arm includes a transverse connecting arm, a first sub-support arm, and a second sub-support arm. The first sub-support arm is disposed on one side of the transverse connecting arm, and the second sub-support arm is disposed on the other side. The first sub-support arm is rotatably connected to the support base. The transverse guide is rotatably connected to the second sub-support arm.

[0137] The driver of the cutting device and the support base are respectively located on both sides of the transverse connecting arm. By applying a torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support base, and at the same time, the second sub-support arm drives the driver to move vertically. The transverse connecting arm, as a force-bearing structure, is located between the first sub-support arm and the second sub-support arm, which is beneficial to improving the overall structural compactness of the support arm and occupying a small space.

[0138] In some implementable ways, the number of the first sub-support arms is two. Along the length direction of the transverse guide, the two first sub-support arms are spaced apart. A part of the driving unit is located between the two first sub-support arms.

[0139] A part of the driving unit can be located between the two first sub-support arms to effectively utilize the space between the two first sub-support arms, which is beneficial to improving the overall structural compactness of the cutting system, reducing the overall volume, and occupying a small space.

[0140] In some implementable ways, the number of the second sub-support arms is two. Along the length direction of the transverse guide, the two second sub-support arms are spaced apart. A receiving portion is formed between the two second sub-support arms. The driver of the cutting device passes through between the two second sub-support arms. The transverse guide is rotatably connected to the two second sub-support arms.

[0141] The driver of the cutting device passes through between the two second sub-support arms to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the overall structural compactness of the cutting system, reducing the overall volume, and occupying a small space.

[0142] In some implementable ways, the number of both the support base and the first sub-support arms is two. Along the length direction of the transverse guide, the two support bases are spaced apart. The two first sub-support arms are respectively rotatably connected to the two support bases. A part of the driving unit is located between the two support bases.

[0143] A part of the driving unit is located between the two support bases to effectively utilize the space between the two support bases, which is beneficial to improving the overall structural compactness of the cutting system, reducing the overall volume, and occupying a small space.

[0144] In some implementable ways, the driving unit includes a cam. The cam includes a spiral surface. The support arm abuts against the spiral surface.

[0145] The spiral surface of the cam is a continuous surface, which is beneficial to improving the motion stability of the support arm during the swinging process relative to the support, and reducing the possibility of impact and jerks between the support arm and the cam.

[0146] In some implementable ways, the number of support arms is two. The two support arms are arranged at intervals in the vertical direction. The two support arms are relatively fixed. The upper support arm abuts against the spiral surface.

[0147] The two support arms are relatively fixed. A four-bar linkage structure is formed between the support and the support arms, ensuring the consistency of the swinging actions of the two support arms up and down. At least part of the cam is arranged in the space between the first sub-support arms of the two support arms, reducing the overall volume and occupying less space.

[0148] In some implementable ways, the number of both the support arms and the lateral guide members is two. The two support arms are arranged at intervals in the vertical direction. One end of each of the two support arms is rotatably connected to the support respectively. The other end of each of the two support arms is rotatably connected to the corresponding lateral guide member respectively. The two support arms are relatively fixed; and / or, the two lateral guide members are relatively fixed. The cutting device is connected to at least one lateral guide member. At least one support arm is connected to the drive unit.

[0149] The two support arms are relatively fixed; and / or, the two lateral guide members are relatively fixed. A four-bar linkage structure relationship can be formed among the support, the two support arms, and the two lateral guide members, which is beneficial to further improving the connection stability among the support, the support arms, and the lateral guide members and the position stability of the cutting device during the rotation process relative to the support arms.

[0150] In some implementable ways, the lateral guide member is a circular shaft. The driver includes a shaft hole. The lateral guide member passes through the shaft hole.

[0151] The lateral guide member passes through the cutting device, which is beneficial to improving the connection stability and reliability between the lateral guide member and the cutting device, and effectively avoiding the situation that the cutting device falls off or separates from the lateral guide member.

[0152] In some implementable ways, the cutting device further includes a sliding connection member. The sliding connection member is connected to the driver. The sliding connection member is slidably connected to the lateral guide member.

[0153] The cutting device is slidably connected to the lateral guide member through the sliding connection member, which is beneficial to reducing the complexity of the connection structure between the cutting device and the lateral guide member, and at the same time can ensure the smoothness of the sliding process of the cutting device relative to the lateral guide member.

[0154] In some implementable ways, the driver includes a housing. The sliding connection member is integrally formed with the housing, which is beneficial to improving the mechanical connection strength between the sliding connection member and the driver.

[0155] In some realizable ways, the number of sliding connectors is two. The two sliding connectors are arranged at intervals along the transverse direction of the lawn mower.

[0156] The way that the two sliding connectors are simultaneously slidably connected to the transverse guide can further ensure the smoothness of the sliding process of the cutting device relative to the transverse guide.

[0157] In some realizable ways, the transverse drive assembly includes a deflection cam. The deflection cam is connected to the cutting device. The deflection cam is used to drive the cutting device to slide on the transverse guide.

[0158] The deflection cam can provide a smooth driving force for the cutting device to ensure the stability of the sliding process of the cutting device on the transverse guide.

[0159] In some realizable ways, the cutting device includes a receiving groove. At least part of the deflection cam is arranged in the receiving groove. The outer peripheral surface of the deflection cam contacts the side surface of the receiving groove.

[0160] The way that the deflection cam is arranged in the receiving groove enables the deflection cam to achieve spatial reuse with the cutting device, improves the structural compactness of the deflection cam and the cutting device, reduces the volume of the overall structure formed by the deflection cam and the cutting device, and occupies less space.

[0161] In some realizable ways, the deflection cam is slidably connected to the cutting device.

[0162] When the cutting device moves vertically, the deflection cam can simultaneously slide in the receiving groove, effectively avoiding jamming between the deflection cam and the cutting device when the cutting device moves vertically.

[0163] In some realizable ways, the transverse drive assembly includes a lead screw and an adapter. The lead screw is threadedly connected to the adapter. The adapter is connected to the cutting device. The lead screw and the adapter are used to drive the cutting device to move relative to the transverse guide.

[0164] The way that the lead screw is threadedly connected to the adapter is beneficial to ensuring the smoothness of the movement process of the adapter and at the same time beneficial to ensuring the displacement accuracy of the adapter, thereby being beneficial to ensuring the smoothness of the movement process of the cutting device and the displacement accuracy.

[0165] In some realizable ways, the adapter is slidably connected to the cutting device.

[0166] When the cutting device moves vertically, the adapter and the cutting device move relative to each other, effectively avoiding jamming between the adapter and the cutting device when the cutting device moves vertically.

[0167] In some realizable ways, the cutting device includes a receiving groove. At least part of the adapter is disposed in the receiving groove. The adapter contacts the side surface of the receiving groove.

[0168] The adapter can achieve spatial multiplexing with the cutting device, improving the structural compactness of the adapter and the cutting device, reducing the volume of the overall structure formed by the adapter and the cutting device, and occupying less space.

[0169] In some realizable ways, the adapter includes a main body and wing plates. The wing plates are connected to the main body. The wing plates are threadedly connected to the lead screw. At least part of the wing plates is disposed in the receiving groove. The wing plates contact the side surface of the receiving groove.

[0170] The wing plates of the adapter can achieve spatial multiplexing with the cutting device, improving the structural compactness of the adapter and the cutting device, reducing the volume of the overall structure formed by the adapter and the cutting device, and occupying less space.

[0171] In some realizable ways, the cutting device further includes two sliding connectors. The two sliding connectors are spaced apart along the transverse direction of the lawn mower. The sliding connectors are slidably connected to the transverse guide. A receiving groove is formed between the two sliding connectors.

[0172] At least part of the adapter is located between the two sliding connectors, so as to effectively utilize the space between the two sliding connectors, which is beneficial to improving the structural compactness of the overall cutting system, reducing the overall volume, and occupying less space.

[0173] In some realizable ways, the transverse drive assembly includes a telescopic rod and an adapter. The telescopic rod is connected to the adapter. The adapter is connected to the cutting device. The telescopic rod and the adapter are used to drive the cutting device to move relative to the transverse guide.

[0174] The connection manner between the telescopic rod and the adapter is beneficial to ensuring the smooth movement of the adapter during the movement process, and at the same time is beneficial to ensuring the displacement accuracy of the adapter, thereby being beneficial to ensuring the smooth movement and displacement accuracy of the cutting device during the movement process.

[0175] The fifth aspect of the embodiments of the present application provides a cutting system for a lawn mower. The cutting system includes a cutting device and a position adjustment device.

[0176] The cutting device includes a driver and a cutter head. The cutter head is connected to the output end of the driver. The driver is used to drive the cutter head to rotate. The cutter head is used for mowing grass.

[0177] The driver is connected to the position adjustment device. The position adjustment device is used to drive the driver to perform a lateral movement action so that the cutting device moves between a central position and a side cutting position, and the position adjustment device is used to drive the driver to perform a height adjustment action to adjust the ground height of the driving cutting device.

[0178] The sixth aspect of the embodiment of the present application provides a lawn mower, which includes the position adjustment device of the above embodiment.

[0179] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move horizontally on the lawn mower. Without changing the movement path of the lawn mower, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0180] The seventh aspect of the embodiment of the present application provides a lawn mower, including a body and a position adjustment device.

[0181] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a drive unit, and a lateral drive assembly. The number of lateral guides is the same as and corresponds one by one to the number of support arms. At least two support arms are arranged at intervals in the vertical direction. Each support arm includes two sub-support arms. Along the length direction of the lateral guide, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion. One end of each sub-support arm is respectively rotatably connected to the support. The other end of each sub-support arm is respectively rotatably connected to the end of the corresponding lateral guide. The length direction of the lateral guide forms an angle α with the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees.

[0182] The upper sub-support arm and the lower sub-support arm are relatively fixed. And / or, at least two lateral guides are relatively fixed.

[0183] The cutting device is connected to at least one lateral guide. The cutting device includes a cutter head. The lateral drive assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the lateral guide. The drive unit is used to drive at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the ground height of the cutting device.

[0184] The rotation speed of the cutter head in the first state is greater than or equal to the rotation speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started. The second state is the state of performing the moving action.

[0185] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move horizontally on the lawn mower. Without changing the movement path of the lawn mower, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0186] The length direction of the lateral guide has an included angle α with the forward direction of the lawn mower. The lateral guide does not coincide with the forward direction of the lawn mower. The cutting device moves in the length direction of the lateral guide, causing the cutting device to change its position laterally on the lawn mower, achieving the adjustment of different cutting positions under the same path of the lawn mower.

[0187] The driver of the cutting device can be passed through the accommodating part to effectively utilize the space between the two sub-support arms, which is beneficial to improving the structural compactness, reducing the overall volume, and occupying less space.

[0188] The lateral drive assembly drives the cutting device to move along the lateral guide, so that the cutting device moves in the length direction of the lateral guide. By the way of driving the cutting device to move laterally by the lateral drive assembly, it is beneficial to realize the automatic adjustment of the position of the cutting device, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0189] Each support arm is relatively fixed; and / or each lateral guide is relatively fixed. A link structure relationship can be formed among the support, each support arm, and each lateral guide, which is beneficial to further improving the connection stability among the support, the support arm, and the lateral guide, and the position stability during the rotation of the cutting device relative to the support arm.

[0190] In some realizable ways, at least one support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one lateral guide is connected to the drive unit.

[0191] The support arm is connected to the drive unit. The drive unit drives the support arm to rotate up and down, further driving the cutting device to move up and down, realizing the height adjustment of the cutting device. By the way of connecting the support arm to the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0192] The cutting device is connected to the drive unit. The drive unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the drive unit on the cutting device does not need to be very large to complete the lifting, and the operation is convenient.

[0193] The lateral guide is connected to the drive unit. The lateral guide is an intermediate connection structure between the support arm and the cutting device. By the movement of the lateral guide, the support arm and the cutting device are driven to move, without the need for too many structures and components to transmit force, ensuring the stability of the motion state.

[0194] The eighth aspect of the embodiments of the present application provides a lawn mower, including a fuselage and a position adjustment device.

[0195] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a drive unit, and a lateral drive assembly. The number of lateral guides is the same as and corresponds one by one to the number of support arms. At least two support arms are arranged at intervals in the vertical direction. Each support arm includes a lateral connecting arm and two sub-support arms. Each of the two sub-support arms includes a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the lateral connecting arm, and the second sub-support arm is arranged on the other side. The end parts of the first sub-support arms of each support arm are respectively rotatably connected to the support. The end part of the lateral guide is rotatably connected to the end part of the second sub-support arm of the corresponding support arm. The length direction of the lateral guide forms an angle α with the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees.

[0196] At least two support arms are relatively fixed, and / or at least two lateral guides are relatively fixed.

[0197] The cutting device is connected to at least one lateral guide. The cutting device includes a cutter head. The lateral drive assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the lateral guide. The drive unit is used to drive at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the ground clearance of the cutting device.

[0198] The rotational speed of the cutter head in the first state is greater than or equal to the rotational speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of performing the moving action.

[0199] In each support arm, the number of first sub-support arms is two. Along the length direction of the lateral guide, the two first sub-support arms are arranged at intervals.

[0200] In each support arm, the number of second sub-support arms is two. Along the length direction of the lateral guide, the two second sub-support arms are arranged at intervals. A receiving portion is formed between the two second sub-support arms.

[0201] The lawn mower according to the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the fuselage. Under the driving action of the position adjustment device, the cutting device can move laterally on the lawn mower, and the mowing range of the lawn mower is expanded and the mowing efficiency is improved without changing the movement path of the lawn mower.

[0202] The longitudinal direction of the lateral guide has an included angle α with the advancing direction of the lawn mower. The lateral guide does not coincide with the advancing direction of the lawn mower. The cutting device moves in the longitudinal direction of the lateral guide, causing a position change of the cutting device in the lateral direction of the lawn mower, thereby realizing the adjustment of different cutting positions under the same path of the lawn mower. Additionally, the lateral drive assembly drives the cutting device to move along the lateral guide, enabling the cutting device to move in the longitudinal direction of the lateral guide. By driving the cutting device to move laterally through the lateral drive assembly, it is beneficial to achieve the automatic adjustment of the position of the cutting device, improving the adjustment efficiency and accuracy of the position of the cutting device.

[0203] The lateral connecting arm structure is located between the first sub-support arm and the second sub-support arm, which is beneficial to improving the overall structural compactness of the support arm and occupying less space.

[0204] A part of the drive unit can be located between the two first sub-support arms to effectively utilize the space between the two first sub-support arms, which is beneficial to improving the overall structural compactness of the position adjustment device, reducing the overall volume, and occupying less space.

[0205] When the position adjustment device is applied to a lawn mower, the driver of the cutting device can pass through the accommodating part to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the structural compactness, reducing the overall volume, and occupying less space.

[0206] Each support arm is relatively fixed; and / or each lateral guide is relatively fixed. A link structure relationship can be formed among the support, each support arm, and each lateral guide, which is beneficial to further improving the connection stability among the support, support arm, and lateral guide, as well as the position stability during the rotation of the cutting device relative to the support arm.

[0207] Adopting the installation structure in which the support arm is connected to the lateral guide reduces the space occupied by the position adjustment device and the cutting device as a whole inside the fuselage while realizing the position adjustment of the cutting device, which helps to achieve the intelligence and miniaturization of the lawn mower.

[0208] In some realizable ways, the lateral connecting arm of at least one support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one lateral guide is connected to the drive unit.

[0209] The support arm is connected to the drive unit. The drive unit drives the support arm to rotate up and down, further driving the cutting device to move up and down to realize the height adjustment of the cutting device. By connecting the support arm to the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0210] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the driving unit on the cutting device does not need to be very large to complete the lifting, and the operation is convenient.

[0211] The lateral guide is connected to the driving unit. The lateral guide serves as an intermediate connection structure between the support arm and the cutting device. The movement of the lateral guide drives the support arm and the cutting device to move, without the need for excessive structures and components to transmit force, ensuring the stability of the movement state.

[0212] A ninth aspect of the embodiments of the present application provides a lawn mower, including a body and a position adjustment device.

[0213] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device includes at least two support arms, at least two lateral guides, a support, a driving unit, and a lateral driving component.

[0214] The number of lateral guides is the same as and corresponds one-to-one with the number of support arms. At least two support arms are arranged at intervals in the vertical direction. Each support arm includes two sub-support arms. Along the length direction of the lateral guide, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion. One end of each sub-support arm is respectively rotatably connected to the support. The other end of each sub-support arm is respectively rotatably connected to the end of the corresponding lateral guide. The length direction of the lateral guide forms an angle α with the advancing direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees.

[0215] The upper sub-support arm and the lower sub-support arm are relatively fixed; and / or, at least two lateral guides are relatively fixed.

[0216] The two uppermost sub-support arms are connected by a lateral connecting arm. The cutting device is connected to at least one lateral guide. The cutting device includes a cutter head. The lateral driving component is connected to the cutting device to drive the cutting device to perform a moving action between the first end and the second end of the lateral guide. The driving unit is used to drive at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the ground height of the cutting device.

[0217] The rotation speed of the cutter head in the first state is greater than or equal to the rotation speed of the cutter head in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of performing the moving action.

[0218] The lawn mower according to the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the fuselage. Under the driving action of the position adjustment device, the cutting device can move laterally on the lawn mower, expanding the mowing range of the lawn mower and thus improving the mowing efficiency without changing the movement path of the lawn mower.

[0219] There is an included angle α between the length direction of the lateral guide and the forward direction of the lawn mower. The lateral guide does not coincide with the forward direction of the lawn mower. The movement of the cutting device in the length direction of the lateral guide causes a position change of the cutting device laterally on the lawn mower, realizing the adjustment of different cutting positions under the same path of the lawn mower. In addition, the lateral drive assembly drives the cutting device to move along the lateral guide, so that the cutting device moves in the length direction of the lateral guide. By driving the cutting device to move laterally through the lateral drive assembly, it is beneficial to realize the automatic adjustment of the position of the cutting device, improve the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0220] In some feasible ways, the lateral connecting arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or at least one lateral guide is connected to the driving unit.

[0221] The support arm is connected to the driving unit. The driving unit drives the support arm to rotate up and down to further drive the cutting device to move up and down, realizing the height adjustment of the cutting device. By adopting the way of connecting the support arm with the driving unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0222] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device without the need for other structures or components to transmit force. The force exerted by the driving unit on the cutting device does not need to be very large to complete the lifting, and the operation is convenient.

[0223] The lateral guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the movement of the lateral guide drives the support arm and the cutting device to move, without the need for too many structures and components to transmit force, ensuring the stability of the movement state.

[0224] In some feasible ways, the cutting device includes a cutter head. The cutter head includes blades. The lateral guide includes a first end and a second end along its length direction. The cutting device moves between the first end and the second end. When the cutting device is located at the first end, at least part of the blades are outside the orthographic projection of the fuselage towards the ground.

[0225] When the cutting device is at the first end, at least part of the blade is outside the orthographic projection of the fuselage towards the ground. The blade can move outside the fuselage of the lawn mower. When working, it can cut the grass in the lawn boundary area cleanly, avoiding the residue of the lawn boundary during the cutting process, eliminating the need for manual secondary trimming, and improving the user experience.

[0226] In some realizable ways, the first end of the lateral guide extends outside the orthographic projection of the fuselage towards the ground.

[0227] The first end of the lateral guide extends outside the orthographic projection of the fuselage towards the ground. Part of the lateral guide extends outside the fuselage of the lawn mower. When trimming the boundary of the lawn is required, the cutting device moves along the lateral guide to the outside of the fuselage of the lawn mower, increasing the area where the blade moves outside the fuselage of the lawn mower, and further improving the trimming effect of the lawn boundary.

[0228] In some realizable ways, the cutting device includes a cutter head. The cutter head includes blades. The lateral guide includes a first end and a second end along its length direction. The cutting device moves between the first end and the second end. The first end and the second end are within the orthographic projection of the fuselage. The first end is close to the side edge of the orthographic projection of the fuselage. When the cutting device is at the first end, the orthographic projection of the blade towards the ground is within the orthographic projection of the fuselage towards the ground. The minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage is greater than or equal to 0 mm and less than or equal to 50 mm.

[0229] The minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is greater than or equal to 0 mm and less than or equal to 50 mm. When the width of the area where the lawn edge cannot be cut is greater than 50 mm, it will affect the visual beauty and require manual re-trimming, affecting the user experience. The minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage is greater than or equal to 0 mm and less than or equal to 50 mm, greatly reducing the width of the uncut lawn, eliminating the need for manual secondary trimming, and improving the side cutting effect. In addition, the blade is located inside the fuselage, and no additional protective structure is required to meet the safety requirements.

[0230] In some realizable ways, the cutting device includes a cutter head. The cutter head includes blades. The lateral guide includes a first end and a second end along its length direction. The cutting device moves between the first end and the second end. The first end and the second end are within the orthographic projection of the fuselage. The first end is close to the side edge of the orthographic projection of the fuselage. When the cutting device is at the first end, the orthographic projection of the blade towards the ground is within the orthographic projection of the fuselage towards the ground. The length of the lateral guide is S, and the width of the fuselage is W. 0.3W ≤ S*sinα ≤ 0.7W, and the vertical distance between the end of the lateral guide and the symmetry plane of the fuselage is less than or equal to 0.35W.

[0231] S * sinα is the length of the lateral guide along the width of the fuselage. When the value of S * sinα is less than 0.3W, the lateral movement range of the cutting device is small, the mowing efficiency is low, and at the same time, the cutting effect at the lawn boundary is not ideal, resulting in a relatively wide grass left at the lawn boundary, affecting the visual appearance. Users need to manually process the boundary again, and the user experience is poor. When the value of S * sinα is greater than 0.7W, the lateral guide will occupy more space inside the fuselage, and more space needs to be reserved inside the fuselage to avoid the cutting device, which makes the volume of the fuselage increase, not conducive to the miniaturization of the lawn mower. At the same time, the too long lateral guide makes the center of gravity of the lawn mower shift to one side of the lawn mower, resulting in a decrease in the stability of the lawn mower.

[0232] In some realizable ways, there is an included angle α between the length direction of the lateral guide and the advancing direction of the lawn mower. The included angle α is between 85 degrees and 95 degrees.

[0233] When the length of the lateral guide is fixed and the value range of the included angle α is between 85 degrees and 95 degrees, the movement range of the cutting device along the width of the fuselage is larger than when the included angle α takes other values, which can effectively utilize the space inside the fuselage, improve the mowing efficiency and ensure the miniaturization of the machine at the same time.

[0234] In some realizable ways, there is an included angle α between the length direction of the lateral guide and the advancing direction of the lawn mower. The included angle α is 90 degrees.

[0235] When the length of the lateral guide is fixed and the value of the included angle α is 90 degrees, the movement range of the cutting device along the width direction of the fuselage is the largest, and the space inside the fuselage can be maximally utilized to achieve the effect of cutting to the edge.

[0236] In some realizable ways, the rotational speed of the cutter head in the first state is greater than or equal to the rotational speed of the cutter head in the third state, and the third state is the state of performing the height adjustment action.

[0237] In some realizable ways, the rotational speed of the cutter head in the second state is 0.

[0238] In some realizable ways, the rotational speed of the cutter head in the third state is 0.

[0239] In some realizable ways, the rotational speed of the cutter head in the second state is equal to the rotational speed of the cutter head in the third state.

[0240] The tenth aspect of the embodiments of the present application provides a lawn mower, which includes the cutting system of the above embodiments.

[0241] The lawn mower according to an embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the body of the lawn mower. Under the driving action of the position adjustment device, the cutting device can move horizontally on the body of the lawn mower, increasing the mowing area of the lawn mower. At the same time, the lawn mower protects the cutter head through a cutter head cover and does not require an additional bottom protection plate. The cutter head cover of the lawn mower will not crush the lawn, which is beneficial to improving the cutting efficiency and cutting effect.

[0242] A lawn mower according to an eleventh aspect of an embodiment of the present application includes a body and a cutting system.

[0243] The body includes a first lower edge. The cutting system is arranged on the body. The cutting system includes a cutting device and a position adjustment device. The cutting device is connected to the position adjustment device. The position adjustment device is used to drive the cutting device to move horizontally so that the cutting device moves between the central position of the body and the side cutting position of the body. And the position adjustment device is used to adjust the height of the cutting device.

[0244] The cutting device includes a cutter head and a cutter head cover. The cutter head is located inside the cutter head cover. The cutter head includes blades. The cutter head cover has a second lower edge. When the cutting device is in the side cutting position, in the vertical direction, the second lower edge is lower than the first lower edge, and the vertical distance between the first lower edge and the second lower edge is greater than or equal to 1 mm and less than or equal to 20 mm, and the second lower edge is lower than the lower surface of the blade. The blades are used for mowing the lawn.

[0245] The greater the distance between the first lower edge and the second lower edge, the less likely the operator's fingers are to touch the cutter head when carrying the lawn mower. However, as the distance difference between the first lower edge and the second lower edge increases, the distance between the cutter head cover and the ground decreases, and the obstacle-crossing ability of the lawn mower decreases, affecting the mowing efficiency.

[0246] Since the diameter range of the walking wheels of the lawn mower is 18 - 25 mm, when the vertical distance between the first lower edge and the second lower edge is greater than 20 mm, the distance between the cutter head cover and the ground is small, which cannot meet the general obstacle-crossing requirements and will seriously affect the working performance of the lawn mower; when the vertical distance between the first lower edge and the second lower edge is less than 1 mm, the operator's fingers may touch the blades during the process of carrying the lawn mower, affecting the safety performance of the lawn mower.

[0247] When the vertical distance between the first lower edge and the second lower edge is greater than or equal to 1 mm and less than or equal to 20 mm, it can meet the requirement that the fingers of general operators will not touch the cutter head when carrying the lawn mower normally, and the lawn mower can meet the general obstacle-crossing requirements.

[0248] A lawn mower according to a twelfth aspect of an embodiment of the present application includes a body and a cutting system.

[0249] The body includes a first lower edge. A cutting system is provided on the body. The cutting system includes a cutting device and a position adjusting device. The cutting device is connected to the position adjusting device. The position adjusting device is used to drive the cutting device to move horizontally so that the cutting device moves between the central position of the body and the side cutting position of the body. And the position adjusting device is used to adjust the height of the cutting device.

[0250] The cutting device includes a cutter head and a cutter head cover. The cutter head is located inside the cutter head cover. The cutter head includes blades. The cutter head cover has a second lower edge. When the cutting device is in the side cutting position, in the vertical direction, the second lower edge is lower than the first lower edge. The vertical distance between the first lower edge and the second lower edge is greater than or equal to 5 mm and less than or equal to 15 mm, and the second lower edge is lower than the lower surface of the blade. The blade is used for mowing grass.

[0251] The greater the distance between the first lower edge and the second lower edge, the less likely the operator's fingers are to touch the cutter head when carrying the lawn mower. However, as the distance difference between the first lower edge and the second lower edge increases, the distance between the cutter head cover and the ground decreases, and the obstacle crossing ability of the lawn mower decreases, affecting the mowing efficiency. When the vertical distance between the first lower edge and the second lower edge is greater than or equal to 5 mm and less than or equal to 15 mm, it can meet the requirement that the fingers of an operator with a longer hand length than the average person will not touch the cutter head when carrying the lawn mower, and the lawn mower has better obstacle crossing ability.

[0252] A thirteenth aspect of the embodiments of the present application provides a lawn mower, including a body and a cutting system.

[0253] The body includes a first lower edge. A cutting system is provided on the body. The cutting system includes a cutting device and a position adjusting device. The cutting device is connected to the position adjusting device. The position adjusting device is used to drive the cutting device to move horizontally so that the cutting device moves between the central position of the body and the side cutting position of the body. And the position adjusting device is used to adjust the height of the cutting device.

[0254] The cutting device includes a cutter head and a cutter head cover. The cutter head is located inside the cutter head cover. The cutter head includes blades. The cutter head cover has a second lower edge. When the cutting device is in the side cutting position, in the vertical direction, the second lower edge is lower than the first lower edge. The vertical distance between the first lower edge and the second lower edge is 10 mm, and the second lower edge is lower than the lower surface of the blade. The blade is used for mowing grass.

[0255] The greater the distance between the first lower edge and the second lower edge, the less likely it is for the operator's fingers to touch the cutter disc when carrying the lawn mower. However, as the distance difference between the first lower edge and the second lower edge increases, the distance between the cutter disc cover and the ground decreases, and the obstacle-crossing ability of the lawn mower decreases, affecting the mowing efficiency. When the vertical distance between the first lower edge and the second lower edge is 10 millimeters, the comprehensive performance of the safety and obstacle-crossing of the lawn mower is the best.

[0256] In some realizable ways, the position adjustment device includes a lateral drive assembly. The lateral drive assembly includes a deflection cam. The deflection cam is connected to the cutting device. The deflection cam is used to drive the cutting device to move laterally. The deflection cam includes a first limiting portion, the fuselage includes a second limiting portion and a third limiting portion, and when the cutting device is in the central position. The first limiting portion cooperates with the second limiting portion. When the cutting device is in the side cutting position, the first limiting portion cooperates with the third limiting portion.

[0257] By the mutual cooperation of the first limiting portion and the second limiting portion and the first limiting portion and the third limiting portion, the position accuracy of the cutting device moving laterally to the central position or the side cutting position can be ensured, and the position movement accuracy can be improved.

[0258] In some realizable ways, the fuselage includes a side skirt. When the cutting device is in the side cutting position of the fuselage, along the direction perpendicular to the side skirt, the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is greater than or equal to 10 millimeters and less than or equal to 50 millimeters.

[0259] In the side cutting state, the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is greater than or equal to 10 millimeters and less than or equal to 50 millimeters. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is greater than 50 millimeters, the width of the uncut area at the lawn edge will affect the visual beauty and requires manual re-trimming, affecting the user experience. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is less than 10 millimeters, when the user is carrying the lawn mower and the fingers are buckled inward from the lower edge of the side skirt into the fuselage, it is easy to accidentally touch the blade, causing injury to the user. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is greater than or equal to 10 millimeters and less than or equal to 50 millimeters, while meeting the safety performance, the width of the uncut lawn is greatly reduced, and there is no need for manual secondary trimming, improving the side cutting effect.

[0260] In some realizable ways, the fuselage includes a side skirt. When the cutting device is in the central position of the fuselage, along the direction perpendicular to the side skirt, the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is D.

[0261] When the cutting device is in the side cutting position of the fuselage, along the direction perpendicular to the side skirt, the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage is d. The value of D is greater than the value of d.

[0262] In the embodiment of the present application, the lawn mower has two working positions. For different usage scenarios, the cutting device can be adjusted to the center position or the side cutting position of the fuselage to meet different lawn mowing needs of users.

[0263] A fourteenth aspect of the embodiment of the present application provides a lawn mower, including a fuselage and a cutting system.

[0264] The fuselage includes a first lower edge. The cutting system is arranged on the fuselage. Along the vertical direction, the orthographic projection of the cutting system is located within the orthographic projection of the fuselage. The cutting system includes a cutting device and a position adjustment device. The cutting device is connected to the position adjustment device. The position adjustment device is used to drive the cutting device to move horizontally so that the cutting device moves between the center position and the side cutting position of the fuselage. And the position adjustment device is used to adjust the height of the cutting device. The cutting device includes a cutting piece. The cutting piece is used for mowing the lawn.

[0265] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can adjust the relative position between the cutting device and the fuselage. Under the driving action of the position adjustment device, the cutting device can move between the center position and the side cutting position. When the cutting device is in the side cutting position, the cutting device can trim the area near the lawn boundary, which is beneficial to avoiding a large area of uncut lawn remaining at the lawn boundary. Description of the Drawings

[0266] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0267] Figure 1 It is a partial structural schematic diagram of the lawn mower according to an embodiment of the present application;

[0268] Figure 2 It is a partial side view structural schematic diagram of the cutting system according to an embodiment of the present application;

[0269] Figure 3 It is a partial bottom view structural schematic diagram of the cutting system according to an embodiment of the present application;

[0270] Figure 4 It is a partial structural schematic diagram of the cutting system according to an embodiment of the present application;

[0271] Figure 5 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0272] Figure 6 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0273] Figure 7 Partial structural schematic diagram of a lateral drive assembly according to an embodiment of the present application;

[0274] Figure 8 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0275] Figure 9 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0276] Figure 10 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0277] Figure 11 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0278] Figure 12 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0279] Figure 13 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0280] Figure 14 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0281] Figure 15 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0282] Figure 16 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0283] Figure 17 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0284] Figure 18 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0285] Figure 19 Partial structural schematic diagram of a cutting system according to an embodiment of the present application;

[0286] Figure 20 Partial structural schematic diagram of a lawn mower according to an embodiment of the present application;

[0287] Figure 21Schematic diagram of the partial structure of a lawn mower according to an embodiment of the present application.

[0288] Explanation of reference numerals:

[0289] 10. Lawn mower;

[0290] 20. Cutting system;

[0291] 30. Body; 31. Side skirt; 311. First lower edge;

[0292] 40. Cutting device; 40a. Receiving groove;

[0293] 41. Driver;

[0294] 42. Cutter head; 421. Blade;

[0295] 43. Cutter head cover; 43a. Second lower edge; 431. Flange;

[0296] 44. Sliding connection member;

[0297] 50. Position adjustment device;

[0298] 60. Height adjustment assembly;

[0299] 61. Support;

[0300] 62. Support arm; 62a. Receiving portion; 62b. First connecting portion; 62c. Second connecting portion;

[0301] 620. Sub - support arm;

[0302] 621. Transverse connecting arm; 622. First sub - support arm; 623. Second sub - support arm;

[0303] 63. Cam; 631. Helical surface;

[0304] 64. Transverse guide; 641. First end; 642. Second end;

[0305] 70. Transverse drive assembly;

[0306] 71. Deflection cam; 711. First limit portion;

[0307] 72. Second drive member;

[0308] 73. Lead screw;

[0309] 74. Adapter; 741. Main body; 742. Wing plate;

[0310] 75. Telescopic rod;

[0311] 80. Horizontal shaft;

[0312] 90. Traveling device;

[0313] X, lateral direction;

[0314] Y, vertical direction;

[0315] Z, forward direction. Detailed implementation manner

[0316] The lawn mower in the embodiment of the present application is a self - moving device that can automatically cut the lawn. The lawn mower can automatically cut the lawn without manual operation. During the working process of the lawn mower, it can walk on the lawn along a predetermined movement direction and movement path. During the walking process, the lawn mower can perform the lawn - cutting function to cut the lawn so that the lawn maintains a predetermined height, avoiding the lawn being too high or having uneven heights, and ensuring that the lawn maintains good aesthetics and cleanliness.

[0317] The lawn mower is usually placed in a predetermined area to perform lawn - trimming work. For example, a physical fence can be set around the lawn. For example, the physical fence can be a wire mesh or a wooden fence, etc. The physical fence is arranged around the boundary of the lawn. The lawn mower can be placed inside the physical fence. The lawn mower can trim the lawn inside the physical fence.

[0318] For another example, the lawn mower can be placed in an open - type lawn area. An open - type lawn area means that there is no physical fence around the lawn. To ensure that the lawn mower does not drive out of the lawn area, the lawn mower can include a control system, and the control system can automatically set the walking route of the lawn mower according to the shape of the boundary of the lawn, so that the lawn mower always walks in the predetermined lawn area and trims the lawn at the same time. The lawn mower cannot drive out of the boundary of the lawn.

[0319] Figure 1 Schematically shows the partial structure of the lawn mower. Figure 2 Schematically shows the partial side - view structure of the cutting system. Figure 3 Schematically shows the partial bottom - view structure of the cutting system.

[0320] See Figure 1 , Figure 2 and Figure 3 As shown in

[0321] Exemplarily, the cutting member can be a cutter disc 42. The driver 41 is connected to the cutter disc 42. The driver 41 is used to drive the cutter disc 42 to rotate. The cutter disc 42 in a rotating state can mow the lawn to reduce the height of the lawn. The rotation axis of the cutter disc 42 is a vertical axis. Alternatively, there is a small angle between the rotation axis of the cutter disc 42 and the vertical direction Y. The cutter disc 42 maintains a predetermined distance from the ground, so that the cutter disc 42 can cut the lawn according to the trimming height requirement. The vertical direction Y also serves as the height direction.

[0322] The lawn mower 10 further includes a body 30 and a traveling device 90. The cutting device 40 can be disposed inside the body 30. Exemplarily, along the vertical direction Y, the cutting device 40 can be disposed below the body 30. Along the vertical direction Y, the orthographic projection of the cutting device 40 can be located within the orthographic projection of the body 30. The traveling device 90 is connected to the body 30. The traveling device 90 includes traveling wheels or crawlers. The traveling wheels or crawlers can be located outside the body 30. Along the transverse direction X of the lawn mower 10, traveling wheels or crawlers are respectively disposed on both sides of the lawn mower 10. The transverse direction X of the lawn mower 10 is a horizontal direction perpendicular to the forward direction Z of the lawn mower 10. The transverse direction X of the lawn mower 10 is perpendicular to the vertical direction Y. It should be noted that along the transverse direction X of the lawn mower 10, both sides of the lawn mower 10 refer to the left side and the right side of the lawn mower 10.

[0323] In the related art, the cutter disc of the lawn mower is disposed at the central position of the lawn mower. For a lawn surrounded by a physical fence, when the lawn mower travels close to the physical fence, the cutter disc cannot cut the part of the lawn between the cutter disc and the physical fence either, resulting in a relatively large area of the lawn remaining near the physical fence, which requires manual secondary trimming. For an open lawn, when the lawn mower travels close to the lawn boundary, the cutter disc cannot cut the part of the lawn between the cutter disc and the lawn boundary either, resulting in a relatively large area of the lawn remaining near the boundary, which requires manual secondary trimming.

[0324] To solve the above problems, in one way, the lawn mower can be provided with a lateral position adjustment device. The cutting device is connected to the lateral position adjustment device. The lateral position adjustment device can adjust the lateral relative position between the cutting device and the body, so that the cutting device can move from the central position to the outer edge of the body to the edge cutting position, or move from the edge cutting position to the center of the body to the central position. When the cutting device is located at the edge cutting position, the cutting device can trim the area near the lawn boundary, which is beneficial to avoiding manual secondary trimming.

[0325] However, due to the limitation of the body volume, it is difficult for a lawn mower equipped with a lateral position adjustment device to compatibly set a height position adjustment device inside the body. The height position adjustment device is a mechanism for adjusting the height of the cutting device, enabling the cutter head to complete the cutting work on lawns at different height positions. Co-locating the lateral position adjustment device and the height position adjustment device inside the body of the lawn mower also requires considering the problem of movement interference, so a large amount of internal body space is needed to accommodate the lateral position adjustment device and the height position adjustment device. The lawn mower is characterized by a small volume and light weight, which also makes it difficult to integrally set the above two position adjustment devices inside the lawn mower. For lawn mowers, there is currently a lack of specific means to achieve both the functions of lateral position adjustment and height position adjustment of the cutter head.

[0326] For a lawn mower with a movable cutting device position or a lawn mower with the cutting device located on one side of the body, when the cutting device of the lawn mower is in the side cutting position, the lawn mower must not harm people or animals. For example, when the cutting device is in the side cutting position and a person is carrying the lawn mower, the person's fingers must not touch the cutter head. To meet the above requirements, side guard plates and bottom guard plates are provided on the body of the lawn mower. When the cutting device is in the side cutting position, a part of the cutting device can be located within the space enclosed by the side guard plate and the bottom guard plate. The side guard plate and the bottom guard plate protect the cutting device, making it difficult for a person's fingers to touch the cutter head, thus ensuring the safety of using the lawn mower. However, during the operation of the lawn mower, the bottom guard plate will crush the lawn, resulting in the cutting device being unable to cut the crushed lawn, affecting the cutting efficiency and cutting effect.

[0327] The lawn mower 10 according to the embodiment of the present application can achieve the function of horizontally moving the cutting device 40 and, at the same time, can achieve the function of vertically moving the cutting device 40. The lawn mower 10 enables the cutting device 40 to trim a part of the lawn near the lawn boundary by horizontally adjusting the position of the cutting device 40. At the same time, when the cutting device 40 is in the side cutting position, the lawn mower 10 meets the safety requirements for use and will not cause injury to people or animals by vertically adjusting the position of the cutting device 40. The lawn mower 10 does not require an additional bottom guard plate, which is beneficial to improving the cutting efficiency and cutting effect.

[0328] Figure 4 Schematically shows a partial structure of the cutting system 20. Figure 4 In [the figure], the cutting device 40 in the cutting system 20 is in the central position. Figure 5 Schematically shows a partial structure of the cutting system 20. Figure 5 In [the figure], the cutting device 40 in the cutting system 20 is in the side cutting position. The following will Figures 1 to 5 give an example and description of the lawn mower 10 according to the embodiment of the present application.

[0329] See Figures 1 to 5 As shown, the lawn mower 10 of the embodiment of the present application may include a body 30. The body 30 includes an accommodation space. The body 30 can protect the components disposed in the accommodation space. The body 30 may include side skirt plates 31. Along the transverse direction X of the lawn mower 10, the side skirt plates 31 are respectively disposed on both sides of the lawn mower 10. The side skirt plate 31 has a first lower edge 311. Along the vertical direction Y, the first lower edge 311 of the side skirt plate 31 faces the ground.

[0330] The lawn mower 10 may include a cutting system 20. The cutting system 20 is disposed on the body 30. The body 30 provides an installation base for the cutting system 20 and bears the cutting system 20. Exemplarily, along the vertical direction Y, the cutting system 20 may be disposed below the body 30. The cutting system 20 includes a cutting device 40 and a position adjusting device 50. Both the cutting device 40 and the position adjusting device 50 are disposed on the body 30. The cutting device 40 is connected to the position adjusting device 50. The position adjusting device 50 is configured to drive the cutting device 40 to move laterally closer to or away from the side skirt plate 31, and the position adjusting device 50 is configured to drive the cutting device 40 to move vertically along the vertical direction Y. The position adjusting device 50 has the function of driving the cutting device 40 to move laterally and vertically.

[0331] The position adjusting device 50 may drive the cutting device 40 to move laterally and then drive the cutting device 40 to move vertically. Alternatively, the position adjusting device 50 may drive the cutting device 40 to move vertically and then drive the cutting device 40 to move laterally. Alternatively, the position adjusting device 50 may drive the cutting device 40 to move laterally and vertically simultaneously.

[0332] The position adjusting device 50 is configured to drive the cutting device 40 to move laterally closer to or away from the side skirt plate 31, so that the cutting device 40 moves between the central position of the body 30 and the side cutting position of the body 30. The position adjusting device 50 is configured to drive the cutting device 40 to move vertically, so that the cutting device 40 approaches or moves away from the ground, thereby adjusting the ground height of the cutting device 40.

[0333] When the cutting device 40 is at the central position of the body 30, the cutting device 40 is relatively far from the side skirt plate 31 of the body 30. The distance between the cutting device 40 and the side skirt plate 31 is relatively large. When the cutting device 40 is at the side cutting position of the body 30, the cutting device 40 is relatively close to the side skirt plate 31 of the body 30. The distance between the cutting device 40 and the side skirt plate 31 is relatively small.

[0334] In some realizable manners, along the vertical direction Y, the orthographic projection of the cutting system 20 is located within the orthographic projection of the body 30. When the cutting device 40 is at the side cutting position of the body 30, the cutting device 40 does not extend beyond the side skirt plate 31 of the body 30 along the transverse direction X of the lawn mower 10.

[0335] In some realizable ways, in the initial state, the cutting device 40 of the lawn mower 10 is located at the central position of the fuselage 30. After starting the lawn mower 10, the cutting device 40 of the lawn mower 10 can trim most areas of the lawn, and only the lawn near the boundary of the lawn remains untrimmed. Then, the position adjustment device 50 is started to drive the cutting device 40 to move horizontally from the central position to the side cutting position, and then trim the lawn near the boundary, so as to complete the trimming work of the entire lawn.

[0336] Alternatively, in the initial state, the cutting device 40 of the lawn mower 10 is located at the side cutting position. After starting the lawn mower 10, the cutting device 40 of the lawn mower 10 can trim the lawn near the boundary. Then, the position adjustment device 50 is started to drive the cutting device 40 to move horizontally from the side cutting position to the central position, and trim the remaining most of the lawn, so as to complete the trimming work of the entire lawn.

[0337] In some realizable ways, during the process of the position adjustment device 50 driving the cutting device 40 to move, the cutting device 40 can be in a stopped working state or a working state.

[0338] In some realizable ways, when the position adjustment device 50 needs to drive the cutting device 40 to move horizontally from the central position to the side cutting position, the position adjustment device 50 first drives the cutting device 40 to move vertically to lower the height of the cutting device 40. Then, the position adjustment device 50 drives the cutting device 40 to move horizontally to the side cutting position.

[0339] When the position adjustment device 50 needs to drive the cutting device 40 to move horizontally from the side cutting position to the central position, the position adjustment device 50 first drives the cutting device 40 to move horizontally to the central position. Then, the position adjustment device 50 drives the cutting device 40 to move vertically to increase the height of the cutting device 40.

[0340] In some realizable ways, a limiting structure (not shown in the figure) is provided on the fuselage 30. When the cutting device 40 is located at the side cutting position, the limiting mechanism is used to limit the maximum upward stroke of the cutting device 40 to prevent the height of the cutting device 40 from exceeding the set range when the cutting device 40 is at the side cutting position.

[0341] In some realizable ways, for lawns in different areas, there are different requirements for the trimming height of the lawn. The way that the position adjustment device 50 drives the cutting device 40 to move vertically along the vertical direction Y can flexibly adjust the height of the cutting device 40, so as to adapt to and meet the different height requirements for lawn trimming.

[0342] See Figures 1 to 3As shown, the cutting device 40 of the embodiment of the present application includes a cutter head 42 and a cutter head cover 43. The cutter head 42 is disposed within the cutter head cover 43. The cutter head 42 is located below the cutter head cover 43. Exemplarily, the material of the cutter head cover 43 may be plastic. The material of the cutter head 42 may be metal. The cutter head cover 43 includes a bottom opening for avoiding the cutter head 42. The bottom opening of the cutter head cover 43 is used to avoid the cutter head 42. The size of the bottom opening is larger than the diameter of the cutter head 42. The bottom opening of the cutter head cover 43 can completely avoid the cutter head 42, such that along the vertical direction Y, the lower part of the cutter head 42 is not blocked by the cutter head cover 43. The lawn can also enter the cutter head cover 43 through the bottom opening and be cut by the cutter head 42 within the cutter head cover 43. Therefore, the cutter head cover 43 will not crush the lawn, ensuring that the cutter head 42 can cut the grass smoothly, improving the cutting efficiency and cutting effect.

[0343] In some implementable ways, the cutter head cover 43 has a second lower edge 43a. Along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 faces the ground. When the cutting device 40 is in the side cutting position, along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 near the side skirt 31 is lower than the first lower edge 311, and the second lower edge 43a is lower than the cutter head 42. When observing from the side of the lawn mower 10 along the transverse direction X of the lawn mower 10, the part of the cutter head cover 43 that is not blocked by the side skirt 31 can be observed, but the cutter head 42 blocked by the cutter head cover 43 cannot be observed.

[0344] Exemplarily, when observing the lawn mower 10 from above, along the transverse direction X of the lawn mower 10, when the cutting device 40 is in the side cutting position, the cutting device 40 can be disposed to be biased to the left side of the lawn mower 10. Along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 near the left side skirt 31 can be lower than the first lower edge 311 of the left side skirt 31.

[0345] In some implementable ways, along the vertical direction Y, the cutter head cover 43 as a whole can be located outside the fuselage 30. When observing from the side of the lawn mower 10, the side skirt 31 does not block the cutter head cover 43. Alternatively, along the vertical direction Y, a part of the cutter head cover 43 can be located outside the fuselage 30, and a part can be located inside the fuselage 30. When observing from the side of the lawn mower 10, the side skirt 31 blocks a part of the area of the cutter head cover 43.

[0346] In some implementable ways, refer to Figure 2 and Figure 3As shown, the cutter head cover 43 may include two flanges 431. The flanges 431 may be folded towards the ground. The flanges 431 have second lower edges 43a. The two flanges 431 are arranged at intervals along the transverse direction X of the lawn mower 10. Along the transverse direction X of the lawn mower 10, the flanges 431 are arranged corresponding to the side skirts 31. The left flange 431 is arranged corresponding to the left side skirt 31. The right flange 431 is arranged corresponding to the right side skirt 31. When the cutting device 40 moves along the transverse direction X of the lawn mower 10, the flanges 431 of the cutter head cover 43 approach or move away from the side skirts 31. The cutter head 42 is arranged in the space between the two flanges 431. Along the forward direction Z of the lawn mower 10, the cutter head cover 43 has a grass inlet. The lawn can enter the cutter head cover 43 through the grass inlet, so the cutter head cover 43 will not crush the lawn.

[0347] In some realizable ways, referring to Figure 2 and Figure 4 As shown, the cutting device 40 further includes a driver 41. The driver 41 is connected to the position adjustment device 50. The cutter head cover 43 may be connected to the driver 41. The output shaft of the driver 41 is connected to the cutter head 42. The position adjustment device 50 can drive the cutting device 40 to move horizontally or vertically as a whole, that is, the position adjustment device 50 can drive the driver 41, the cutter head cover 43 and the cutter head 42 to move horizontally or vertically synchronously.

[0348] In some examples, the driver 41 may include a housing, a motor and a transmission mechanism. The cutter head cover 43 may be connected to the housing. The motor is arranged inside the housing. The transmission mechanism includes an output shaft passing through the housing. The parts of the transmission mechanism other than the output shaft are arranged inside the housing. The housing can protect the motor and the transmission structure. Exemplarily, the transmission mechanism includes a gear type speed change structure.

[0349] The lawn mower 10 according to the embodiment of the present application includes a position adjustment device 50 and a cutting device 40. The position adjustment device 50 can adjust the relative position between the cutting device 40 and the fuselage 30. Under the driving action of the position adjustment device 50, the cutting device 40 can move between a central position and a side cutting position. When the cutting device 40 is in the side cutting position, the cutting device 40 can trim the area near the lawn boundary, which is beneficial to avoiding a large area of uncut lawn remaining at the lawn boundary. At the same time, the lawn mower 10 protects the cutter head 42 through the cutter head cover 43, and does not need to additionally set a bottom protection plate. The cutter head cover 43 of the lawn mower 10 will not crush the lawn, which is beneficial to improving the cutting efficiency and the cutting effect.

[0350] In addition, the position adjusting device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is in the side cutting position, along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 can be lower than the first lower edge 311 of the side skirt 31, and the second lower edge 43a of the cutter head cover 43 can be lower than the cutter head 42. There is a large safety distance between the second lower edge 43a of the cutter head cover 43 and the cutter head 42. When the lawn mower 10 is being carried, the operator's palm can be placed against the side skirt 31, and the fingertips of the fingers can be hooked inside the cutter head cover 43. Under the protection of the cutter head cover 43, most of the operator's fingers are located outside the cutter head cover 43, making it difficult for the operator's fingers to touch the cutter head 42. At the same time, since the second lower edge 43a of the cutter head cover 43 is lower than the cutter head 42, even if the operator's fingers bypass the second lower edge 43a of the cutter head cover 43 and are hooked inside the cutter head cover 43, the fingertips of the fingers are not likely to touch the cutter head 42.

[0351] In addition, the lawn mower 10 according to the embodiment of the present application can meet the handling safety requirements as long as the orthographic projection of the cutting system 20 is within the orthographic projection of the fuselage 30. Therefore, when the cutting device 40 is in the side cutting position, the distance between the cutter head 42 and the side skirt 31 can be adjusted to be very small, and the outer edge of the cutter head cover 43 can be infinitely close to the side skirt 31, greatly reducing the width of the uncut lawn and improving the side cutting effect.

[0352] Based on the fact that the outer edge of the cutter head cover 43 can be infinitely close to the side skirt 31, most of the hard impurities (such as small stones) cannot enter between the cutter head cover 43 and the side skirt 31, avoiding scratches or damage to the cutter head cover 43 or the side skirt 31 caused by hard impurities.

[0353] In addition, the lawn mower 10 according to the embodiment of the present application does not need to be provided with a bottom protection plate at the bottom of the cutter head 42, avoiding the situation where small stones or other sundries are stuck between the bottom protection plate and the cutter head 42 during the mowing process, resulting in jamming of the cutter head 42, reducing the probability of the machine jamming in the side cutting state of the lawn mower 10, and improving the cutting efficiency and user experience.

[0354] Therefore, the lawn mower 10 according to the embodiment of the present application can not only effectively cut the lawn near the lawn boundary, improve the cutting efficiency and cutting effect, but also adjust the position of the cutting device 40 through the position adjusting device 50, so that the cutting device 40 in the side cutting position can meet the use safety requirements of the lawn mower 10 and will not cause injury to people or animals.

[0355] In some implementable ways, as shown in Figure 1 the vertical distance L2 between the first lower edge 311 of the side skirt 31 and the second lower edge 43a of the cutter head cover 43 along the vertical direction Y is greater than or equal to 1 millimeter (mm).

[0356] In some feasible ways, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side skirt 31 and the second lower edge 43a of the cutter head cover 43 is greater than or equal to 5 millimeters. In some examples, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side skirt 31 and the second lower edge 43a of the cutter head cover 43 is 5 millimeters.

[0357] In some feasible ways, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side skirt 31 and the second lower edge 43a of the cutter head cover 43 is greater than or equal to 10 millimeters. The greater the vertical distance L2 between the first lower edge 311 of the side skirt 31 and the second lower edge 43a of the cutter head cover 43, the higher the protection performance of the side skirt 31 and the cutter head cover 43, and thus the less likely the operator's fingers are to touch the cutter head 42.

[0358] In some feasible ways, see Figure 2 and Figure 3 As shown, the cutter head 42 includes a blade 421. Along the vertical direction Y, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 ranges from greater than or equal to 3 millimeters. The maximum vertical distance L3 between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 is less than or equal to 15 millimeters. For example, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 is 10 millimeters. The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43, the greater the distance between the operator's finger buckled into the cutter head cover 43 and the cutter head 42, and thus the less likely the operator's fingers are to touch the cutter head 42.

[0359] In some feasible ways, along the vertical direction Y, the vertical distance between the first lower edge 311 of the side skirt 31 and the ground ranges from 40 millimeters to 60 millimeters. For example, the vertical distance between the first lower edge 311 of the side skirt 31 and the ground is 55 millimeters.

[0360] In some feasible ways, along the vertical direction Y, the vertical distance between the cutter head 42 and the ground ranges from 30 millimeters to 40 millimeters.

[0361] See Figure 4 and Figure 5 As shown, the position adjustment device 50 of the embodiment of the present application includes a height adjustment component 60. The height adjustment component 60 is arranged on the fuselage 30. The cutting device 40 is connected to the height adjustment component 60. The height adjustment component 60 is used to drive the cutting device 40 to move vertically in the vertical direction Y to adjust the height of the cutting device 40.

[0362] The height adjustment assembly 60 may include a support 61. The support 61 may be disposed on the fuselage 30. The support 61 may be used to carry the cutting system 20. Exemplarily, the support 61 may be integrally formed with the fuselage 30. Alternatively, the support 61 may be detachably connected to the fuselage 30.

[0363] The height adjustment assembly 60 may further include a support arm 62. The support arm 62 is rotatably connected to the fuselage 30. Exemplarily, the support arm 62 may be connected to the fuselage 30 through the support 61. The support arm 62 is rotatably connected to the support 61. The manner in which the support arm 62 is connected to the fuselage 30 through the support 61 is conducive to reducing the connection difficulty between the support arm 62 and the fuselage 30. Exemplarily, the support arm 62 may be rotatably connected to the support 61. Exemplarily, the support arm 62 may be rotatably connected to the support 61 through a horizontal shaft 80. The height adjustment assembly 60 may drive the support arm 62 to swing around the horizontal shaft 80. The horizontal shaft 80 is the fulcrum of the support arm 62. The manner in which the support arm 62 and the support 61 are connected through the horizontal shaft 80 is conducive to reducing the structural design difficulty and disassembly and assembly difficulty of forming a rotating pair between the support arm 62 and the support 61, and reducing the processing cost and maintenance cost.

[0364] Exemplarily, a horizontal shaft 80 is provided on the support arm 62. A shaft hole is correspondingly provided on the support 61. The horizontal shaft 80 of the support arm 62 is inserted into the shaft hole of the support 61. Alternatively, a shaft hole is provided on the support arm 62. A horizontal shaft 80 is correspondingly provided on the support 61. The shaft hole of the support arm 62 is sleeved on the horizontal shaft 80 of the support 61. Alternatively, shaft holes are provided on both the support arm 62 and the support 61. An additional horizontal shaft 80 is inserted into the shaft holes on the support arm 62 and the support 61.

[0365] The cutting device 40 is connected to the support arm 62. The support arm 62 includes a first connecting portion 62b. There is a distance between the first connecting portion 62b of the support arm 62 and the horizontal shaft 80. The cutting device 40 is connected to the first connecting portion 62b of the support arm 62. There is a distance between the cutting device 40 and the horizontal shaft 80. The cutting device 40 can rotate relative to the horizontal shaft 80. Since the distance between the cutting device 40 and the horizontal shaft 80 is relatively far, when the support arm 62 rotates at a small angle relative to the horizontal shaft 80, the support arm 62 can drive the cutting device 40 to move a relatively large distance in the vertical direction Y, which is conducive to improving the adjustment efficiency of the vertical position of the cutting device 40.

[0366] Exemplarily, the cutting device 40 is detachably connected to the first connecting portion 62b of the support arm 62.

[0367] Exemplarily, the driver 41 of the cutting device 40 is connected to the first connecting portion 62b of the support arm 62.

[0368] Exemplarily, along the vertical direction Y, the cutter head cover 43 and the cutter head 42 of the cutting device 40 can be arranged below the support arm 62. Exemplarily, along the vertical direction Y, there is a spacing between the cutter head cover 43 of the cutting device 40 and the support arm 62 to avoid positional interference between the support arm 62 and the cutter head cover 43 when the support arm 62 swings relative to the support 61.

[0369] The height adjustment assembly 60 further includes a drive unit. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to adjust the ground height of the cutting device 40.

[0370] In some examples, the cutting device 40 is connected to the drive unit. The drive unit is directly connected to the cutting device 40 without the need for other structures or components to transmit force. The force exerted by the drive unit on the cutting device 40 does not need to be very large to complete the lifting and lowering, and the operation is convenient.

[0371] In some examples, the drive unit is connected to the support arm 62. The drive unit drives the support arm 62 to rotate up and down to further drive the cutting device 40 to move up and down, realizing the adjustment of the ground height of the cutting device 40. By adopting the connection method of the support arm 62 and the drive unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0372] The drive unit can exert a force on the support arm 62 so that the support arm 62 can rotate around the horizontal axis 80 under the action of the rotational torque, so that the support arm 62 can drive the cutting device 40 to rise or fall to adjust the ground height of the cutting device 40.

[0373] Exemplarily, the support arm 62 includes a second connection portion 62c. The drive unit is connected to the second connection portion 62c of the support arm 62. The second connection portion 62c of the support arm 62 is the area for bearing the force. The drive unit can transmit the force to the support arm 62 through the second connection portion 62c. There is a spacing between the second connection portion 62c of the support arm 62 and the horizontal axis 80. Exemplarily, the second connection portion 62c is located on the side of the horizontal axis 80 facing the first connection portion 62b, so that the overall structure formed by the drive unit and the support arm 62 is relatively compact and occupies little space.

[0374] Exemplarily, the first connection portion 62b of the support arm 62 is located on the side of the second connection portion 62c away from the horizontal axis 80. The driver 41 of the cutting device 40 is located on the side of the second connection portion 62c of the support arm 62 away from the horizontal axis 80.

[0375] In some realizable ways, the cutting device 40 is rotatably connected to the height adjustment component 60. When the height adjustment component 60 drives the cutting device 40 to move vertically, the cutting device 40 also rotates relative to the height adjustment component 60, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes height and does not swing relative to the horizontal plane. In some examples, see Figure 4 and Figure 5 As shown, the cutting device 40 is rotatably connected to the support arm 62. Exemplarily, the cutting device 40 is rotatably connected to the first connection portion 62b of the support arm 62. When the driving unit drives the support arm 62 to rotate relative to the horizontal axis 80, the cutting device 40 also rotates relative to the support arm 62. Thus, when the support arm 62 drives the cutting device 40 to move vertically, the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes height and does not swing relative to the horizontal plane.

[0376] In some realizable ways, see Figure 4 and Figure 5 As shown, the support arm 62 includes a receiving portion 62a. The receiving portion 62a is located on the side of the second connection portion 62c of the support arm 62 away from the horizontal axis 80. In the vertical direction Y, the receiving portion 62a penetrates the support arm 62. The driver 41 of the cutting device 40 is connected to the support arm 62. The driver 41 passes through the receiving portion 62a of the support arm 62, that is, the support arm 62 is sleeved outside the driver 41, so that the driver 41 can reuse the receiving portion 62a of the support arm 62 to effectively improve the structural compactness of the cutting system 20, reduce the overall volume, and occupy less space. Along the vertical direction Y, the cutter head cover 43 of the cutting device 40 is arranged below the receiving portion 62a.

[0377] In some examples, see Figure 4 and Figure 5 As shown, the support arm 62 includes a transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. The second connection portion 62c is arranged on the transverse connecting arm 621. There is a spacing between the transverse connecting arm 621 and the support 61. The first sub-support arm 622 is arranged on the side of the transverse connecting arm 621 facing the support 61, and the second sub-support arm 623 is arranged on the other side of the transverse connecting arm 621 facing away from the support 61. Along the forward direction Z of the mower 10, the first sub-support arm 622 and the second sub-support arm 623 are respectively arranged on both sides of the transverse connecting arm 621. The forward direction Z of the mower 10 is perpendicular to the transverse X of the mower 10. The first sub-support arm 622 is rotatably connected to the support 61 through the horizontal axis 80. The second sub-support arm 623 is provided with the first connection portion 62b.

[0378] The driver 41 of the cutting device 40 can be connected to the second sub-support arm 623. Exemplarily, the driver 41 of the cutting device 40 is rotatably connected to the second sub-support arm 623. Exemplarily, a first connection portion 62b is provided at the end of the second sub-support arm 623 away from the lateral connection arm 621.

[0379] Exemplarily, the lateral connection arm 621 is a bar-shaped structure. The length direction of the lateral connection arm 621 is the same as the lateral X of the lawn mower 10. The width direction of the lateral connection arm 621 is the same as the forward direction Z of the lawn mower 10. Along the width direction of the lateral connection arm 621, the first sub-support arm 622 and the second sub-support arm 623 are respectively provided on both sides of the lateral connection arm 621.

[0380] The driver 41 of the cutting device 40 and the support 61 are respectively located on both sides of the lateral connection arm 621. By applying a torque to the lateral connection arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and at the same time, the second sub-support arm 623 drives the driver 41 to move vertically. The lateral connection arm 621 is used as a stress structure between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improving the overall structural compactness of the support arm 62 and occupying a small space.

[0381] In some examples, in each support arm 62, the number of the first sub-support arms 622 is two. Along the direction perpendicular to the vertical direction Y, the two first sub-support arms 622 are spaced apart. The direction perpendicular to the vertical direction Y can be the same as the lateral X of the lawn mower 10. The two first sub-support arms 622 are spaced apart along the lateral X of the lawn mower 10. The two first sub-support arms 622 are rotatably connected to the support 61. A part of the drive unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is beneficial to improving the overall structural compactness of the cutting system 20, reducing the overall volume and occupying a small space.

[0382] In some examples, in each support arm 62, the number of the second sub-support arms 623 is two. Along the direction perpendicular to the vertical direction Y, the two second sub-support arms 623 are spaced apart. The direction perpendicular to the vertical direction Y can be the same as the lateral X of the lawn mower 10. The two second sub-support arms 623 are spaced apart along the lateral X of the lawn mower 10.

[0383] An accommodation portion 62a is formed between two second sub-support arms 623. The driver 41 of the cutting device 40 is disposed between the two second sub-support arms 623, so as to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying a small space. The driver 41 of the cutting device 40 is rotatably connected to the two second sub-support arms 623, which is beneficial to improving the connection stability between the cutting device 40 and the support arm 62 and the position stability during the rotation process.

[0384] The two second sub-support arms 623 are arranged at intervals along the transverse direction X of the lawn mower 10. The position adjustment device 50 can drive the driver 41 of the cutting device 40 to move transversely between the two second sub-support arms 623.

[0385] In some examples, a transverse guide member 64 is rotatably connected to the two second sub-support arms 623.

[0386] In some examples, the number of the supports 61 is one. The two first sub-support arms 622 are rotatably connected to the same support 61.

[0387] In some examples, refer to Figure 4 and Figure 5 As shown, the number of the supports 61 is two. In each support arm 62, the number of the first sub-support arms 622 is two. Along the length direction of the transverse guide member 64, the two supports 61 are arranged at intervals. Along the length direction of the transverse guide member 64, the two first sub-support arms 622 are arranged at intervals. The length direction of the transverse guide member 64 can be perpendicular to the vertical direction Y.

[0388] There is an included angle α between the length direction of the transverse guide member 64 and the forward direction Z of the lawn mower 10. The included angle α is greater than 0 degrees and less than 180 degrees. Exemplarily, when the included angle between the length direction of the transverse guide member 64 and the forward direction Z of the lawn mower 10 is 90 degrees, the length direction of the transverse guide member 64 can be the same as the transverse direction X of the lawn mower 10.

[0389] Two first sub-support arms 622 are arranged on one side of the transverse connecting arm 621, and two second sub-support arms 623 are arranged on the other side. The two supports 61 and the two first sub-support arms 622 are all arranged at intervals along the transverse direction X of the lawn mower 10. The two first sub-support arms 622 are respectively rotatably connected to the two supports 61. A part of the drive unit is located between the two supports 61, so as to effectively utilize the space between the two supports 61, which is beneficial to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying a small space.

[0390] Exemplarily, along the length direction of the transverse connecting arm 621, one second sub-support arm 623 is arranged at each end of the transverse connecting arm 621.

[0391] In some examples, referring to Figure 4 and Figure 5 As shown, a second connecting portion 62c is provided in the middle region of the lateral connecting arm 621. The driving unit is connected to the second connecting portion 62c. The driving unit can apply a force to the lateral connecting arm 621 to drive the entire supporting arm 62 to swing up and down. Exemplarily, the two first sub-supporting arms 622 are symmetrically arranged with respect to the second connecting portion 62c, which is beneficial to improving the force balance of the supporting arm 62. The two second sub-supporting arms 623 are symmetrically arranged with respect to the second connecting portion 62c, which is beneficial to improving the force balance of the supporting arm 62.

[0392] In some realizable ways, the height adjustment assembly 60 may include a supporting arm 62. The driving unit drives the supporting arm 62 to swing up and down relative to the horizontal axis 80, so that the supporting arm 62 drives the cutting device 40 to move vertically, thereby adjusting the height of the cutting device 40, and thus adjusting the height of the cutter head 42 from the ground.

[0393] In some realizable ways, referring to Figure 4 and Figure 5 As shown, the height adjustment assembly 60 may include two supporting arms 62. Along the vertical direction Y, the two supporting arms 62 are spaced apart. The two supporting arms 62 are respectively rotatably connected to the support 61 through the horizontal axis 80. The two supporting arms 62 are respectively rotatably connected to the driver 41 of the cutting device 40. Therefore, a four-bar linkage structure can be formed among the support 61, the two supporting arms 62, and the driver 41, which is beneficial to further improving the connection stability between the cutting device 40 and the supporting arm 62 and the position stability during the rotation of the cutting device 40 relative to the supporting arm 62.

[0394] Along the vertical direction Y, there is a first distance between the two rotation axes of each of the two supporting arms 62 relative to the support 61. Along the vertical direction Y, there is a second distance between the two rotation axes of each of the two supporting arms 62 relative to the driver 41 of the cutting device 40. The first distance is equal to the second distance.

[0395] Referring to Figure 2 and Figure 4 As shown, the two rotation axes of each of the two supporting arms 62 relative to the support 61 are located in the same first vertical plane. The rotation axes of each of the two supporting arms 62 relative to the cutting device 40 are located in the same second vertical plane. The connecting lines between the two rotation axes of each of the two supporting arms 62 relative to the support 61 and the two rotation axes of each of the two supporting arms 62 relative to the cutting device 40 can form a parallelogram relationship. The first vertical plane is parallel to the second vertical plane. During the process of the two supporting arms 62 driving the cutting device 40 to move vertically, the horizontal perpendicular distance between the first vertical plane and the second vertical plane decreases or increases.

[0396] In some examples, the structural shapes and dimensions of the two support arms 62 can be the same, which is beneficial to reducing the processing cost.

[0397] In some examples, one of the two support arms 62 is connected to the driving unit. The two support arms 62 are respectively connected to the support 61 and the cutting device 40. Therefore, when the driving unit applies a force to one support arm 62, the two support arms 62 can swing up and down relative to the support 61 simultaneously, and at the same time, the two support arms 62 rotate relative to the driver 41 of the cutting device 40. Exemplarily, among the two support arms 62, the upper support arm 62 is connected to the driving unit.

[0398] In some implementable ways, referring to Figure 4 and Figure 5 as shown, the driving unit includes a first driving component (not shown in the figure) and a cam 63. The cam 63 is connected to the output shaft of the first driving component. The first driving component is used to drive the cam 63 to rotate. The rotation axis of the cam 63 is a vertical axis.

[0399] The cam 63 has a spiral surface 631. The spiral surface 631 extends spirally around the rotation axis. Along the vertical direction Y, the second connecting portion 62c of the support arm 62 is disposed above the spiral surface 631 of the cam 63. The second connecting portion 62c of the support arm 62 abuts against the spiral surface 631 of the cam 63. When the first driving component drives the cam 63 to rotate forward or backward, the second connecting portion 62c of the support arm 62 moves relative to the spiral surface 631 of the cam 63, so that the support arm 62 swings as a whole relative to the support 61, thereby the height of the cutting device 40 can be adjusted.

[0400] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the motion stability of the support arm 62 during the swinging relative to the support 61 and reducing the possibility of impact and jerks between the support arm 62 and the cam 63.

[0401] Exemplarily, the number of the support arms 62 is two. The two support arms 62 are spaced apart along the vertical direction Y and are relatively fixed. The upper support arm 62 abuts against the spiral surface 631 of the cam 63. In the vertical direction Y, the second connecting portion 62c of the upper support arm 62 is disposed above the spiral surface 631 of the cam 63, and at least part of the cam 63 is disposed in the space between the first sub-support arms 622 of the two support arms 62, reducing the overall volume and occupying less space.

[0402] Exemplarily, the second connecting portion 62c of the support arm 62 includes a spherical portion. The outer surface of the spherical portion is a spherical surface. The spherical surface of the second connecting portion 62c abuts against the spiral surface 631 of the cam 63, which is beneficial to reducing the frictional resistance between the second connecting portion 62c and the spiral surface 631.

[0403] Exemplarily, when the first driving member drives the cam 63 to rotate forward, the cam 63 pushes the support arm 62 to swing upward relative to the support 61, so that the support arm 62 drives the cutting device 40 to move upward, increasing the height of the cutting device 40 and the distance between the cutter head 42 and the ground. When the first driving member drives the cam 63 to rotate reversely, the cam 63 releases the support arm 62. The support arm 62 swings downward relative to the support 61, so that the support arm 62 drives the cutting device 40 to move downward, decreasing the height of the cutting device 40 and the distance between the cutter head 42 and the ground.

[0404] Exemplarily, when the first driving member drives the cam 63 to rotate reversely, under the action of the gravity of the cutting device 40, the cutting device 40 can drive the support arm 62 to swing downward relative to the support 61, and the second connecting portion 62c of the support arm 62 remains in contact with the spiral surface 631 of the cam 63.

[0405] In some examples, refer to Figure 4 or Figure 5 As shown, at least a part of the cam 63 is disposed in the space between the first sub-support arms 622 of the two support arms 62. The cam 63 can utilize the space between the two first sub-support arms 622, which is beneficial to improving the overall structural compactness of the height adjustment assembly 60, reducing the overall volume of the height adjustment assembly 60, and occupying less space.

[0406] In some examples, the first driving member includes a motor. The output shaft of the motor is connected to the cam 63.

[0407] In some implementable ways, the first driving member can be disposed on the fuselage 30, so that the fuselage 30 can carry the driving unit. Exemplarily, the first driving member is detachably connected to the fuselage 30.

[0408] Refer to Figure 2 、 Figure 4 and Figure 5 As shown, the height adjustment assembly 60 of the embodiment of the present application further includes a lateral guide member 64. The height adjustment assembly 60 is used to drive the lateral guide member 64 to move vertically in the vertical direction Y to adjust the height of the lateral guide member 64, thereby adjusting the height of the cutting device 40. The cutting device 40 is slidably connected to the lateral guide member 64. When the cutting device 40 is subjected to a force along the lateral direction X of the lawn mower 10, the cutting device 40 can move laterally on the lateral guide member 64, so that the cutting device 40 can move between the central position and the side cutting position.

[0409] In some implementable ways, the driver 41 of the cutting device 40 is slidably connected to the lateral guide member 64. In some examples, the housing of the driver 41 is slidably connected to the lateral guide member 64.

[0410] In some examples, the lateral guide 64 may be a circular shaft. A rotational connection may be formed between the lateral guide 64 and the support arm 62, eliminating the need for an additional circular rotational fitting, which reduces the assembly difficulty and cost.

[0411] In some examples, the end of the lateral guide 64 is connected to the end of the support arm 62.

[0412] The cutting device 40 may include a shaft hole. The lateral guide 64 passes through the shaft hole of the cutting device 40. The lateral guide 64 passes through the cutting device 40, which helps to improve the connection stability and reliability between the lateral guide 64 and the cutting device 40, effectively preventing the cutting device 40 from falling off or separating from the lateral guide 64. The axial direction of the lateral guide 64 is the same as the lateral X of the lawn mower 10. Exemplarily, a bushing (not shown in the figure) is provided in the shaft hole of the cutting device 40. The lateral guide 64 passes through the bushing. The bushing can isolate the cutting device 40 from the lateral guide 64, which helps to avoid the problem of wear of the cutting device 40 caused by the direct reciprocating sliding of the cutting device 40 on the lateral guide 64.

[0413] Exemplarily, the material of the bushing may be a metal material. The material of the lateral guide 64 may be a metal material. The driver 41 of the cutting device 40 includes a housing. The material of the housing may be plastic.

[0414] In some examples, referring to Figure 2 、 Figure 4 and Figure 5 as shown, the cutting device 40 further includes a sliding connector 44. The cutting device 40 is slidably connected to the lateral guide 64 through the sliding connector 44. The sliding connector 44 is provided with a shaft hole. The sliding connector 44 may be connected to the driver 41.

[0415] In some examples, the height adjustment assembly 60 includes a support arm 62. The lateral guide 64 is rotatably connected to the support arm 62. The axis of rotation of the lateral guide 64 relative to the support arm 62 is a horizontal axis. The cutting device 40 is rotatably connected to the support arm 62 through the lateral guide 64. The cutting device 40 can slide laterally on the lateral guide 64, and the cutting device 40 and the lateral guide 64 can rotate relative to the support arm 62 about the horizontal axis. The height adjustment assembly 60 can drive the lateral guide 64 to move vertically in the vertical direction Y to drive the cutting device 40 to move vertically through the lateral guide 64. During the vertical movement of the cutting device 40, the cutting device 40 and the lateral guide 64 rotate synchronously relative to the support arm 62, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes height and does not swing relative to the horizontal plane.

[0416] Exemplarily, the support arm 62 includes a first connecting portion 62b. There is a spacing between the first connecting portion 62b of the support arm 62 and the horizontal axis 80. The lateral guide 64 is connected to the first connecting portion 62b of the support arm 62. The lateral guide 64 is rotatably connected to the first connecting portion.

[0417] In some examples, the support arm 62 includes a second sub-support arm 623. The driver 41 is slidably connected to the second sub-support arm 623 and is rotatably connected to the second sub-support arm 623. The manner in which the driver 41 is movably connected to the second sub-support arm 623 can make the overall structure formed by the driver 41 and the support arm 62 relatively compact and occupy less space.

[0418] In some examples, the support arm 62 includes a second sub-support arm 623. The lateral guide 64 is rotatably connected to the second sub-support arm 623. The driver 41 is slidably connected to the lateral guide 64.

[0419] The manner in which the driver 41 is connected to the second sub-support arm 623 through the lateral guide 64 is beneficial to reducing the design difficulty of the connection structure between the driver 41 and the second sub-support arm 623 and the disassembly and assembly difficulty between the driver 41 and the second sub-support arm 623, and reducing the processing cost and maintenance cost.

[0420] In some examples, the support arm 62 includes a receiving portion 62a. The lateral guide 64 is provided corresponding to the receiving portion 62a of the support arm 62. A receiving portion 62a is formed between the lateral guide 64 and the support arm 62. The lateral guide 64 and the support arm 62 are commonly arranged around the receiving portion 62a. The driver 41 of the cutting device 40 can pass through the receiving portion 62a of the support arm 62. The driver 41 of the cutting device 40 is slidably connected to the lateral guide 64.

[0421] Exemplarily, the support arm 62 includes two second sub-support arms 623. Along the sliding direction of the cutting device 40, the two second sub-support arms 623 are spaced apart, so as to form a receiving portion 62a between the two second sub-support arms 623. The sliding direction of the cutting device 40 is the same as the length direction of the lateral guide 64. The sliding direction of the cutting device 40 is the same as the lateral X of the lawn mower 10. The lateral guide 64 is rotatably connected to the two second sub-support arms 623. The two ends of the lateral guide 64 are respectively rotatably connected to the two second sub-support arms 623. The two second sub-support arms 623, the lateral connecting arm 621 and the lateral guide 64 are commonly arranged around the receiving portion 62a, so that the two second sub-support arms 623, the lateral connecting arm 621 and the lateral guide 64 form a "mouth" - shaped structure.

[0422] Exemplarily, the end of the second sub-support arm 623 away from the transverse connecting arm 621 has a first connecting portion 62b. The transverse guide 64 is rotatably connected to the first connecting portion 62b. Exemplarily, when the cutting device 40 moves laterally relative to the transverse guide 64, the two second sub-support arms 623 can limit the cutting device 40.

[0423] Exemplarily, the first connecting portion 62b includes a connecting hole. The end of the second sub-support arm 623 away from the transverse connecting arm 621 has a connecting hole. The transverse guide 64 passes through the connecting hole, and the transverse guide 64 is rotatably connected to the second sub-support arm 623. Exemplarily, a bearing can be provided in the connecting hole of the second sub-support arm 623. The transverse guide 64 is rotatably connected to the second sub-support arm 623 through the bearing.

[0424] Alternatively, the position adjustment device 50 can only drive the cutting device 40 to move laterally to one side of the lawn mower 10. For example, the position adjustment device 50 can only drive the cutting device 40 to move laterally to the right side of the lawn mower 10. Or, the position adjustment device 50 can only drive the cutting device 40 to move laterally to the left side of the lawn mower 10. When the cutting device 40 comes into contact with one second sub-support arm 623, the cutting device 40 slides to the limit position, that is, the cutting device 40 slides to the side cutting position. When the cutting device 40 comes into contact with the other second sub-support arm 623, the cutting device 40 slides to the limit position, that is, the cutting device 40 slides to the center position.

[0425] Or, the position adjustment device 50 can drive the cutting device 40 to move laterally to either side of the lawn mower 10. For example, the position adjustment device 50 can drive the cutting device 40 to move laterally to the left side or the right side of the lawn mower 10. When the cutting device 40 is located in the middle area of the transverse guide 64, the cutting device 40 is in the center position. When the cutting device 40 moves laterally and comes into contact with any one of the second sub-support arms 623, the cutting device 40 slides to the limit position, that is, the cutting device 40 slides to the side cutting position.

[0426] In some implementable ways, refer to Figure 2 、 Figure 4 and Figure 5As shown, the height adjustment assembly 60 may include support arms 62 and lateral guides 64. The number of support arms 62 is two. The two support arms 62 are spaced apart along the vertical direction Y. The number of lateral guides 64 is two. The two lateral guides 64 are spaced apart along the vertical direction Y. The two lateral guides 64 are respectively rotatably connected to the two support arms 62. The two lateral guides 64 are respectively slidably connected to the cutting device 40. The cutting device 40 is rotatably connected to the support arm 62 through the lateral guide 64. Therefore, a four-bar linkage structural relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the cutting device 40, which is beneficial to further improving the connection stability among the support 61, the support arm 62, the lateral guide 64, and the cutting device 40, as well as the position stability of the cutting device 40 during the rotation relative to the support arm 62. The two lateral guides 64 are respectively connected to the cutting device 40, and the relative fixation of the two lateral guides 64 is achieved through the cutting device 40, eliminating the need for additional fixing parts for connecting the two lateral guides 64 or the two support arms 62, saving the fitting cost. At the same time, based on the four-bar linkage structure, it is ensured that the angle between the cutter head 42 and the ground remains consistent during the height adjustment of the cutting device 40.

[0427] In some examples, the cutting device 40 further includes a sliding connector 44. The cutting device 40 is slidably connected to the lateral guide 64 through the sliding connector 44, and the sliding connector 44 is rotatably connected to the support arm 62 through the lateral guide 64. A four-bar linkage structural relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the sliding connector 44. Exemplarily, the sliding connector 44 is connected to the driver 41. The sliding connector 44 is slidably connected to the lateral guide 64. The manner in which the cutting device 40 is slidably connected to the lateral guide 64 through the sliding connector 44 is beneficial to reducing the complexity of the connection structure between the cutting device 40 and the lateral guide 64, and at the same time can ensure the smoothness of the sliding process of the cutting device 40 relative to the lateral guide 64.

[0428] In some examples, along the vertical direction Y, there is a first distance between the two rotation axes of the two support arms 62 relative to the support 61 respectively. Along the vertical direction Y, there is a second distance between the two rotation axes of the two lateral guides 64 relative to the cutting device 40 respectively. The first distance is equal to the second distance.

[0429] The two rotational axes of the two support arms 62 relative to the two supports 61 are located in the same first vertical plane. The two lateral guides 64 are each located in the same second vertical plane with respect to the rotational axis of the cutting device 40. The connecting lines between the two rotational axes of the two support arms 62 relative to the two supports 61 and the two rotational axes of the two lateral guides 64 relative to the cutting device 40 form a parallelogram relationship. The first vertical plane and the second vertical plane are parallel to each other. During the process of the two support arms 62 swinging to drive the cutting device 40 to move vertically, the horizontal perpendicular distance between the first vertical plane and the second vertical plane changes.

[0430] In some examples, the lateral guide 64 can be a circular shaft. The two ends of the lateral guide 64 are respectively rotatably connected to the support arm 62. The axes of the two lateral guides 64 are the rotational axes of the two lateral guides 64 relative to the cutting device 40. The axes of the two lateral guides 64 are parallel to each other. The axes of the two lateral guides 64 are located in the same second vertical plane.

[0431] In some implementable ways, the two lateral guides 64 are connected to each other. The two lateral guides 64 are connected by a connecting member. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the connecting member, which is beneficial to further improving the connection stability among the support 61, the support arm 62, the lateral guide 64, and the connecting member and the position stability during the rotation of the cutting device 40 relative to the support arm 62. Exemplarily, the cutting device 40 can be connected to any one of the two lateral guides 64. Exemplarily, the connecting member has two shaft holes. The two lateral guides 64 are respectively inserted through the two shaft holes of the connecting member to enable the two lateral guides 64 to be connected to each other. Exemplarily, the connecting member can be a connecting plate.

[0432] In some implementable ways, the two lateral guides 64 are respectively slidably connected to the cutting device 40, and the two lateral guides 64 are connected to each other.

[0433] In some implementable ways, refer to Figure 2 、 Figure 4 and Figure 5 As shown, the cutting device 40 further includes a sliding connection member 44. The cutting device 40 is slidably connected to the lateral guide 64 through the sliding connection member 44. Exemplarily, the sliding connection member 44 can be an integrally formed structure with the housing of the driver 41, which is beneficial to improving the mechanical connection strength between the sliding connection member 44 and the driver 41. The material of the sliding connection member 44 can be the same as the material of the housing. Alternatively, the sliding connection member 44 is detachably connected to the housing of the driver 41.

[0434] In some examples, the number of sliding connectors 44 can be two. The two sliding connectors 44 are spaced along the transverse direction X of the lawn mower 10, that is, along the sliding direction of the cutting device 40. The two sliding connectors 44 are spaced apart. The way that the two sliding connectors 44 are simultaneously slidably connected to the transverse guide 64 can further ensure the smoothness of the sliding process of the cutting device 40 relative to the transverse guide 64.

[0435] See Figure 2 、 Figure 4 and Figure 5 As shown, the position adjustment device 50 of the embodiment of the present application further includes a transverse drive assembly 70. The transverse drive assembly 70 is connected to the cutting device 40. The transverse drive assembly 70 is used to drive the cutting device 40 to slide relative to the transverse guide 64. The transverse drive assembly 70 can provide power for the cutting device 40 to drive the cutting device 40 to move laterally. In some examples, the transverse drive assembly 70 can be connected to the fuselage 30. In some examples, along the vertical direction Y, the transverse drive assembly 70 is disposed above the cutter head cover 43. The cutter head cover 43 can block the cut grass clippings from entering the position where the transverse drive assembly 70 is located, thereby helping to avoid the problem of excessive grass clippings accumulating at the transverse drive assembly 70 and causing malfunctions.

[0436] In the embodiment of the present application, the height adjustment assembly 60, the cutting device 40, and the transverse drive assembly 70 are connected to each other to form an integral structure. The cutting device 40 is driven to move through the coordinated cooperation between the transverse drive assembly 70 and the height adjustment assembly 60. The transverse drive assembly 70 and the height adjustment assembly 60 are independently arranged, which is beneficial to reducing the structural complexity of the position adjustment device 50 and facilitating the reduction of the manufacturing difficulty of the position adjustment device 50.

[0437] In some feasible ways, the transverse drive assembly 70 includes a deflection cam 71. The deflection cam 71 is connected to the cutting device 40. The deflection cam 71 is used to drive the cutting device 40 to slide on the transverse guide 64. The deflection cam 71 can provide a smooth driving force for the cutting device 40 to ensure the stability of the sliding process of the cutting device 40 on the transverse guide 64.

[0438] The cutting device 40 includes a receiving groove 40a. At least a part of the deflection cam 71 is disposed in the receiving groove 40a. The outer peripheral surface of the deflection cam 71 has a contact area with the side surface of the receiving groove 40a. There is a spacing between the surface of the deflection cam 71 facing the receiving groove 40a and the bottom surface of the receiving groove 40a. The deflection cam 71 is slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the deflection cam 71 can simultaneously slide in the receiving groove 40a, effectively avoiding jamming between the deflection cam 71 and the cutting device 40 when the cutting device 40 moves vertically.

[0439] The deflection cam 71 is arranged in the receiving groove 40a in such a way that the deflection cam 71 can be spatially multiplexed with the cutting device 40, improving the structural compactness of the deflection cam 71 and the cutting device 40, reducing the volume of the overall structure formed by the deflection cam 71 and the cutting device 40, and occupying a small space.

[0440] The receiving groove 40a has two opposite side surfaces. The two opposite side surfaces of the receiving groove 40a are spaced apart along the lateral direction X of the lawn mower 10. The deflection cam 71 is in close contact with both of the two opposite side surfaces of the receiving groove 40a. When the cutting device 40 is in the side cutting position, the cutting device 40 is in the side cutting state. In the side cutting state, the deflection cam 71 remains in close contact with both of the two opposite side surfaces of the receiving groove 40a.

[0441] When the lateral drive assembly 70 drives the deflection cam 71 to rotate forward or backward, the deflection cam 71 can rotate in the receiving groove 40a. The rotation axis of the deflection cam 71 is perpendicular to the sliding direction of the cutting device 40. The rotation axis of the deflection cam 71 is a horizontal axis. The deflection cam 71 can exert a force on the cutting device 40 to push the cutting device 40 to slide relative to the lateral guide 64, thereby realizing the lateral movement of the cutting device 40.

[0442] In some examples, in the vertical direction Y, the receiving groove 40a penetrates the cutting device 40 up and down.

[0443] In some examples, refer to Figure 2 and Figure 4 As shown, the lateral drive assembly 70 includes a second drive member 72. The deflection cam 71 is connected to the output shaft of the second drive member 72. The second drive member 72 is used to drive the deflection cam 71 to rotate. The axis of the output shaft is the rotation axis of the deflection cam 71. The output shaft of the second drive member 72 is connected to the edge position of the deflection cam 71. Along the radial direction of the deflection cam 71, there is a spacing between the output shaft of the second drive member 72 and the center of the deflection cam 71. When the second drive member 72 drives the deflection cam 71 to rotate, the movement locus of the center of the deflection cam 71 is a circular locus formed around the axis of the output shaft. Exemplarily, the deflection cam 71 can be a circular wheel structure. Exemplarily, the second drive member 72 can be connected to the fuselage 30. The fuselage 30 bears the lateral drive assembly 70. The relative position of the lateral drive assembly 70 and the fuselage 30 does not change.

[0444] In some examples, the second drive member 72 can include a motor and a gearbox. The motor is connected to the input shaft of the gearbox. The output shaft of the gearbox is connected to the deflection cam 71.

[0445] In some examples, the second drive member 72 can include a motor. The output shaft of the motor is connected to the deflection cam 71.

[0446] In some examples, the cutting device 40 includes two sliding connectors 44. Along the sliding direction of the cutting device 40, the two sliding connectors 44 are spaced apart. The space between the two sliding connectors 44 forms a receiving groove 40a.

[0447] In some examples, a first limiting portion 711 is provided on the deflection cam 71. A second limiting portion (not shown in the figure) and a third limiting portion (not shown in the figure) are provided on the fuselage 30. The second limiting portion and the third limiting portion are spaced apart along the sliding direction of the cutting device 40. When the cutting device 40 is in the central position, the first limiting portion 711 contacts and limits with the second limiting portion. When the cutting device 40 is in the edge cutting position, the first limiting portion 711 contacts and limits with the third limiting portion.

[0448] When the cutting device 40 is driven by the deflection cam 71 to horizontally move from the edge cutting position to the central position, the first limiting portion 711 of the deflection cam 71 cooperates with the second limiting portion of the fuselage 30, so that the deflection cam 71 rotates to a predetermined position. The second limiting portion can limit the continuous rotation of the deflection cam 71, avoiding the problem that the cutting device 40 fails to accurately move to the central position due to the excessive rotation angle of the deflection cam 71.

[0449] When the cutting device 40 is driven by the deflection cam 71 to horizontally move from the central position to the edge cutting position, the first limiting portion 711 of the deflection cam 71 cooperates with the third limiting portion of the fuselage 30, so that the deflection cam 71 rotates to a predetermined position. The third limiting portion limits the continuous rotation of the deflection cam 71, avoiding the problem that the cutting device 40 fails to accurately move to the edge cutting position due to the excessive rotation angle of the deflection cam 71.

[0450] Through the mutual cooperation of the first limiting portion 711 and the second limiting portion and the first limiting portion 711 and the third limiting portion, the position accuracy of the cutting device 40 moving horizontally to the central position or the edge cutting position can be ensured, and the position movement accuracy can be improved.

[0451] In some examples, the first limiting portion 711 is provided on the surface of the deflection cam 71 facing away from the horizontal guide member 64. The first limiting portion 711 and the output shaft of the second driving member 72 are respectively arranged on both sides of the center of the deflection cam 71. The first limiting portion 711 is a limiting shaft. The second limiting portion and the third limiting portion can be limiting grooves that cooperate with the limiting shaft. Or, the first limiting portion 711 is a limiting groove. The second limiting portion and the third limiting portion can be limiting shafts that cooperate with the limiting groove.

[0452] In some realizable ways, Figure 6 Schematically shows a partial structure of the cutting system 20. Refer to Figure 6As shown, the lateral drive assembly 70 includes a lead screw 73 and an adapter 74. The lead screw 73 is threadedly connected to the adapter 74. The adapter 74 is connected to the cutting device 40. The threaded connection between the lead screw 73 and the adapter 74 is beneficial to ensuring the smooth movement of the adapter 74 during the movement process, and at the same time is beneficial to ensuring the displacement accuracy of the adapter 74, thereby being beneficial to ensuring the smooth movement and displacement accuracy of the cutting device 40 during the movement process.

[0453] The adapter 74 is slidably connected to the cutting device 40. When the cutting device 40 moves vertically, the adapter 74 and the cutting device 40 slide relative to each other, effectively avoiding jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0454] The axial direction of the lead screw 73 is the same as the lateral direction X of the lawn mower 10. When the lateral drive assembly 70 drives the lead screw 73 to rotate, the adapter 74 can move relative to the lead screw 73 along the axial direction of the lead screw 73, so that the adapter 74 can push and pull the cutting device 40, enabling the cutting device 40 to move laterally on the lateral guide member 64.

[0455] In some examples, the cutting device 40 includes a receiving groove 40a. At least a part of the adapter 74 is disposed in the receiving groove 40a. The adapter 74 can achieve spatial reuse with the cutting device 40, improving the structural compactness of the adapter 74 and the cutting device 40, reducing the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupying a small space. There is a contact area between the outer peripheral surface of the deflection cam 71 and the side surface of the receiving groove 40a. There is a spacing between the surface of the adapter 74 facing the receiving groove 40a and the bottom surface of the receiving groove 40a. The adapter 74 is slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the adapter 74 can simultaneously slide in the receiving groove 40a, effectively avoiding jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0456] In some examples, Figure 7 Schematically shows a partial structure of the lateral drive assembly 70. Refer to Figure 7 As shown, the adapter 74 includes a main body 741 and two wing plates 742. The wing plates 742 are connected to the main body 741. The two wing plates 742 are located on the same side of the main body 741. The two wing plates 742 are spaced apart along the axial direction of the lead screw 73. Threaded holes are provided on the wing plates 742. The lead screw 73 is threadedly connected to the threaded holes of the two wing plates 742. The wing plates 742 of the adapter 74 are connected to the cutting device 40. The wing plates 742 of the adapter 74 are slidably connected to the cutting device 40. When the lateral drive assembly 70 drives the lead screw 73 to rotate, the wing plates 742 can move relative to the lead screw 73 along the axial direction of the lead screw 73, so that the wing plates 742 can push and pull the cutting device 40.

[0457] In some examples, the cutting device 40 includes a receiving groove 40a. The wing plate 742 is slidably connected to the receiving groove 40a. At least a part of the wing plate 742 is disposed within the receiving groove 40a. The two wing plates 742 of the adapter 74 can be inserted into the receiving groove 40a, and the wing plate 742 contacts the side surface of the receiving groove 40a, so that the wing plate 742 of the adapter 74 can achieve spatial multiplexing with the cutting device 40, improving the structural compactness of the adapter 74 and the cutting device 40, reducing the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupying less space. The wing plate 742 is slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the wing plate 742 can slide within the receiving groove 40a.

[0458] In some examples, the cutting device 40 includes two sliding connectors 44. Along the axial direction of the lead screw 73, the two sliding connectors 44 are spaced apart. The space between the two sliding connectors 44 forms the receiving groove 40a. At least a part of the adapter 74 is located between the two sliding connectors 44 to effectively utilize the space between the two sliding connectors 44, which is beneficial to improving the structural compactness of the overall cutting system 20, reducing the overall volume, and occupying less space.

[0459] In some implementable ways, the lateral driving assembly 70 includes a second driving member 72. The lead screw 73 is connected to the output shaft of the second driving member 72. In some examples, the second driving member 72 includes a motor. The lead screw 73 is connected to the output shaft of the motor. In some examples, the second driving member 72 is disposed on the fuselage 30.

[0460] In some implementable ways, Figure 8 Schematically shows a partial structure of the cutting system 20. Refer to Figure 8 As shown, the lateral driving assembly 70 includes a telescopic rod 75 and an adapter 74. The telescopic rod 75 is connected to the adapter 74. The adapter 74 is connected to the cutting device 40. The connection manner between the telescopic rod 75 and the adapter 74 is beneficial to ensuring the smooth movement of the adapter 74 during the movement process, and at the same time is beneficial to ensuring the displacement accuracy of the adapter 74, thereby being beneficial to ensuring the smooth movement and displacement accuracy of the cutting device 40 during the movement process. The adapter 74 is slidably connected to the cutting device 40. When the cutting device 40 moves vertically, the adapter 74 and the cutting device 40 slide relative to each other, effectively avoiding jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0461] The telescopic movement direction of the telescopic rod 75 is the same as the lateral direction X of the lawn mower 10. When the lateral driving assembly 70 drives the telescopic rod 75 to perform telescopic movement, the adapter 74 can move along the telescopic movement direction of the telescopic rod 75, so that the adapter 74 can push and pull the cutting device 40, enabling the cutting device 40 to move laterally on the lateral guide 64.

[0462] Figure 9 Schematically shows a partial structure of the cutting system 20. Refer to Figure 9 As shown, an embodiment of the present application further provides a position adjustment device 50 for adjusting the position of a cutting device 40 of a lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, and a lateral guide 64. One end of the support arm 62 is rotatably connected to the support 61. The other end of the support arm 62 is connected to the lateral guide 64. The cutting device 40 is connected to the lateral guide 64. The cutting device 40 includes a cutter disc 42. The cutting device 40 performs a moving action along the length direction of the lateral guide 64 under the action of a driving force. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground clearance of the cutting device 40. The cutting device 40 is used for mowing grass. The rotational speed of the cutter disc 42 in the first state is greater than or equal to the rotational speed of the cutter disc 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass.

[0463] When the cutting device 40 is subjected to a component force or a resultant force along the length direction of the lateral guide 64, the cutting device 40 slides relative to the lateral guide 64 so that the cutting device 40 moves between a central position and a side cutting position.

[0464] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the drive unit, and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support 61, the drive unit, and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, when the cutting device 40 is subjected to a component force or a resultant force along the length direction of the lateral guide 64, the cutting device 40 slides relative to the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64, thereby realizing the movement of the cutting device 40 between a central position and a side cutting position. For example, the cutting device 40 can be manually pushed to slide relative to the lateral guide 64. Or, the cutting device 40 is pushed to slide relative to the lateral guide 64 by setting a lateral drive assembly 70 to realize automatic adjustment of the position of the cutting device 40.

[0465] By adopting the installation structure in which the support arm 62 is connected to the lateral guide 64, while realizing the position adjustment of the cutting device 40, the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage is reduced, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0466] Through the position adjustment device 50, the adjustment in the height direction and the adjustment in the horizontal direction of the cutting device 40 can be achieved. Based on this, when the moving direction and the moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0467] When the cutting device 40 is in the side cutting position, the cutting device 40 can trim the area near the lawn boundary, which is beneficial to avoiding a large area of uncut lawn remaining at the lawn boundary, and is beneficial to improving the cutting efficiency and the cutting effect.

[0468] In addition, when the position adjustment device 50 is applied to the lawn mower 10, the position adjustment device 50 can adjust the height of the cutting device 40. Thus, when the cutting device 40 is in the side cutting position, along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 can be lower than the first lower edge 311 of the machine body 30, and the second lower edge 43a of the cutter head cover 43 can be lower than the cutter head 42. There is a large safety distance between the second lower edge 43a of the cutter head cover 43 and the cutter head 42. When the lawn mower 10 is being carried, the operator's palm can be placed on the side skirt 31 of the machine body 30, and the fingertips of the fingers can be hooked into the inside of the cutter head cover 43. Under the protection of the cutter head cover 43, most of the operator's fingers are located outside the cutter head cover 43, making it difficult for the operator's fingers to touch the cutter head 42. At the same time, since the second lower edge 43a of the cutter head cover 43 is lower than the cutter head 42, when the operator's fingers bypass the second lower edge 43a of the cutter head cover 43 and are hooked into the inside of the cutter head cover 43, the fingertips of the fingers are also not likely to touch the cutter head 42.

[0469] Therefore, when the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the lawn mower 10 can not only effectively cut the lawn near the lawn boundary, improving the cutting efficiency and the cutting effect, but also adjust the position of the cutting device 40 through the position adjustment device 50 so that the cutting device 40 in the side cutting position can meet the usage requirements of the lawn mower 10 and will not cause injury to people or animals.

[0470] In some implementable ways, after the moving action and the height adjustment action are completed and the cutting device is started, the rotation speed of the cutter head 42 in the non-grass jamming state is increased to 1800 - 3500 revolutions per minute.

[0471] After the moving action and the height adjustment action are completed and the cutting device is started, the rotational speed of the cutter head 42 in a state without grass jamming shall not be lower than 1800 revolutions per minute. Otherwise, when the vegetation contacts the blade 421, the force received is too small to smoothly cut the vegetation, and grass jamming is likely to occur. Even the cutter head 42 may stop rotating due to grass jamming, which may also lead to missed cutting, and the resistance of the grass to the cutter head 42 will be greater, resulting in jamming. When the rotational speed of the cutter head 42 is between 1800 revolutions per minute and 3500 revolutions per minute, it is an ideal cutting state. If the rotational speed of the cutter head 42 is further increased, it will basically maintain around the corresponding cutting efficiency. Even if the rotational speed is too fast, it cannot form sufficient contact with the grass surface, and the cutting effect will instead deteriorate slightly. At the same time, the rotational speed of the cutter head 42 during cutting shall not be greater than 3500 revolutions per minute. Higher than this rotational speed will generate greater noise due to the cutter head 42 rotating too fast, bringing more unnecessary energy consumption, and the safety factor will decrease while the danger factor will increase. Therefore, maintaining the rotational speed of the cutter head 42 at 1800 - 3500 revolutions per minute is an ideal cutting state. The rotational speed of the cutter head 42 will also affect the service life of the blade. Before the rotational speed of the cutter head 42 reaches 1800 revolutions per minute, it is basically in a non-cutting state, and the blade 421 can maintain a relatively stable service life. When the rotational speed of the cutter head 42 reaches 1800 revolutions per minute, it enters the working state of cutting vegetation, and the service life of the blade 421 begins to decline. When the rotational speed of the cutter head 42 exceeds 1800 revolutions per minute, the service life of the blade 421 significantly decreases. If the rotational speed is too fast, it is easy to form negative pressure, which will suck particulate foreign matters (such as small stones, etc.) outside the vegetation to the blade 421 of the cutter head 42, causing damage to the cutting edge and thus affecting the service life of the cutter head. Therefore, maintaining the rotational speed of the cutter head 42 at 1800 - 3500 revolutions per minute is an ideal cutting state, and at this time, the service life of the cutter head also maintains within a normal wear expectation.

[0472] In some feasible ways, the support arm 62 is connected to the drive unit; and / or the cutting device 40 is connected to the drive unit; and / or the lateral guide 64 is connected to the drive unit.

[0473] In some feasible ways, at least one support arm 62 is connected to the drive unit; and / or the cutting device 40 is connected to the drive unit; and / or at least one lateral guide 64 is connected to the drive unit.

[0474] At least one of the support arm 62, the cutting device 40, and the lateral guide 64 can be connected to the drive unit.

[0475] In some realizable ways, the driving unit is connected to at least one support arm 62. The driving unit drives the support arm 62 to rotate up and down, further driving the cutting device 40 to move up and down, so as to realize the adjustment of the ground height of the cutting device 40. By adopting the connection mode of the support arm 62 and the driving unit, the installation difficulty is low, and the stability of the structural assembly is improved.

[0476] In some examples, the driving unit includes a cam 63. The cam 63 includes a spiral surface 631. The support arm 62 is connected to the driving unit. The support arm 62 abuts against the spiral surface 631.

[0477] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the motion stability of the support arm 62 during the swinging process relative to the support 61, and reducing the possibility of impact and jerks between the support arm 62 and the cam 63.

[0478] In some realizable ways, Figure 10 Schematically shows a partial structure of the cutting system 20. Refer to Figure 10 As shown, the cutting device 40 is connected to the driving unit. The driving unit is directly connected to the cutting device 40, and there is no need for other structures or components to transfer force. The acting force of the driving unit on the cutting device 40 does not need to be very large to complete the lifting, and the operation is convenient.

[0479] In some examples, the driving unit includes a cam 63. The cam 63 includes a spiral surface 631. The cutting device 40 is connected to the driving unit. The cutting device 40 abuts against the spiral surface 631. A part of the cutting device 40 can abut against the spiral surface 631 of the cam 63. The cam 63 can drive the cutting device 40 to move up and down, and at the same time drive the support arm 62 to rotate relative to the support 61. When the cutting device 40 moves along the length direction of the lateral guide 64, the cutting device 40 and the spiral surface 631 of the cam 63 slide relative to each other along the length direction of the lateral guide 64.

[0480] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the stability of the cutting device 40 during the movement process, and reducing the possibility of impact and jerks between the cutting device 40 and the cam 63.

[0481] In some realizable ways, Figure 11 Schematically shows a partial structure of the cutting system 20. Refer to Figure 11 As shown, at least one lateral guide 64 is connected to the driving unit. The lateral guide 64 serves as an intermediate connection structure between the support arm 62 and the cutting device 40. By the movement of the lateral guide 64, the support arm 62 and the cutting device 40 are driven to move, and there is no need for too many structures and components to transfer force, ensuring the stability of the motion state.

[0482] In some examples, the driving unit includes a cam 63. The cam 63 includes a spiral surface 631. The lateral guide 64 is connected to the driving unit. The lateral guide 64 abuts against the spiral surface 631. One end of the lateral guide 64 can abut against the spiral surface 631 of the cam 63. The driving unit drives the lateral guide 64 to move up and down, so as to drive the cutting device 40 to move up and down, realize the adjustment of the ground height of the cutting device 40, and at the same time drive the support arm 62 to rotate relative to the support 61.

[0483] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the stability of the movement process of the lateral guide 64 and reducing the possibility of impact and jerks between the lateral guide 64 and the cam 63.

[0484] In some realizable ways, a driving unit is correspondingly arranged on the support arm 62. The support arm 62 is connected to the driving unit. The support arm 62 abuts against the spiral surface 631. A driving unit is correspondingly arranged on the cutting device 40. The cutting device 40 is connected to the driving unit. The cutting device 40 abuts against the spiral surface 631. A driving unit is correspondingly arranged on the lateral guide 64. The lateral guide 64 is connected to the driving unit. The lateral guide 64 abuts against the spiral surface 631.

[0485] Figure 12 Schematically shows a partial structure of the cutting system 20. Refer to Figure 12 As shown, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a driving unit, a lateral guide 64 and a lateral driving assembly 70.

[0486] One end of the support arm 62 is rotatably connected to the support 61. The other end of the support arm 62 is connected to the lateral guide 64. The cutting device 40 is connected to the lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide 64. The driving unit is used to drive the support arm 62 to rotate relative to the support 61 to perform a height adjustment action and adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0487] When the position adjustment device 50 in the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide member 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the drive unit, and the lateral guide member 64. Under the mutual cooperation of the support arm 62, the support 61, the drive unit, and the lateral guide member 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral drive assembly 70 drives the cutting device 40 to slide on the lateral guide member 64, so that the cutting device 40 moves in the length direction of the lateral guide member 64. By driving the cutting device 40 to move laterally through the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0488] Adopting the installation structure in which the support arm 62 is connected to the lateral guide member 64 reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage while realizing the position adjustment of the cutting device 40, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0489] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 obtains a larger mowing range, and the working efficiency of the lawn mower 10 is improved.

[0490] In some implementable ways, Figure 13 Schematically shows a partial structure of the cutting system 20. Refer to Figure 13 As shown, the support arm 62 includes a lateral connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The end of the first sub-support arm 622 is rotatably connected to the support 61. The lateral guide member 64 is rotatably connected to the end of the second sub-support arm 623. The lateral connecting arm 621 is connected to the drive unit.

[0491] By applying a torque to the lateral connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The lateral connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improving the overall structural compactness of the support arm 62 and occupying less space.

[0492] Figure 14 Schematically shows a partial structure of the cutting system 20. Refer to Figure 14As shown in the figure, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of a cutting device 40 of a lawn mower 10. The position adjustment device 50 includes at least two support arms 62, at least two lateral guides 64, a support 61, a drive unit, and a lateral drive assembly 70.

[0493] The number of the lateral guides 64 is the same as and corresponds one-to-one with the number of the support arms 62. Each of the support arms 62 is arranged at intervals in the vertical direction Y. One ends of all the support arms 62 are respectively rotatably connected to the support 61. The other ends of all the support arms 62 are respectively rotatably connected to the corresponding lateral guides 64. Each of the support arms 62 is relatively fixed; and / or each of the lateral guides 64 is relatively fixed. The cutting device 40 is connected to at least one of the lateral guides 64. The cutting device 40 includes a cutter head 42. The lateral drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide 64. The drive unit is used to drive all the support arms 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground height of the cutting device 40. The rotational speed of the cutter head 42 in the first state is greater than or equal to the rotational speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0494] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arms 62, the support 61, the drive unit, and the lateral guides 64. Under the mutual cooperation of the support arms 62, the support 61, the drive unit, and the lateral guides 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral drive assembly 70 drives the cutting device 40 to slide on the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0495] Each support arm 62 is relatively fixed; and / or each lateral guide 64 is relatively fixed. The relative fixation of each support arm 62 means that the relative positions between the support arms 62 are relatively fixed. The relative fixation of each lateral guide 64 means that the relative positions between the lateral guides 64 are relatively fixed. A link structure relationship can be formed among the support 61, all the support arms 62, and all the lateral guides 64, which is conducive to further improving the connection stability among the support 61, the support arms 62, and the lateral guides 64 and the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0496] In some implementable ways, as shown in Figure 14 FIG. 5, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of a cutting device 40 of a lawn mower 10. The position adjustment device 50 includes support arms 62, a support 61, a driving unit, lateral guides 64, and a lateral driving assembly 70.

[0497] The number of the support arms 62 and the lateral guides 64 is two. The two support arms 62 are spaced apart along the vertical direction Y. One ends of the two support arms 62 are respectively rotatably connected to the support 61. The other ends of the two support arms 62 are respectively rotatably connected to the corresponding lateral guides 64. The two support arms 62 are relatively fixed; and / or the two lateral guides 64 are relatively fixed. The cutting device 40 is slidably connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support 61 to perform a height adjustment action. The ground height of the cutting device 40 is adjusted. The rotational speed of the cutter head 42 in the first state is greater than or equal to the rotational speed of the cutter head 42 in the second state. The first state is the state after the movement action is completed and the cutting device 40 is started, and the second state is the state of performing the movement action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0498] The position adjustment device 50 includes two support arms 62 and two lateral guides 64. The two support arms 62 are relatively fixed; and / or the two lateral guides 64 are relatively fixed. The relative fixation of the two support arms 62 means that the relative positions between the two support arms 62 are relatively fixed. The relative fixation of the two lateral guides 64 means that the relative positions between the two lateral guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, and the two lateral guides 64, which is conducive to further improving the connection stability among the support 61, the support arms 62, and the lateral guides 64 and the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0499] An installation structure in which the support arm 62 is connected to the lateral guide 64 reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage while realizing the position adjustment of the cutting device 40, which helps to achieve the intelligence and miniaturization of the lawn mower 10.

[0500] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range, improving the working efficiency of the lawn mower 10.

[0501] In some feasible ways, the number of support arms 62 is two. The two support arms 62 are arranged at intervals along the vertical direction Y. The two support arms 62 are respectively rotatably connected to the support 61. The number of lateral guides 64 is two. The two lateral guides 64 are arranged at intervals along the vertical direction Y. The two lateral guides 64 are respectively rotatably connected to the two support arms 62. The two lateral guides 64 are respectively slidably connected to the cutting device 40. Therefore, a four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the cutting device 40, which is beneficial to further improving the connection stability among the support 61, the support arm 62, the lateral guide 64, and the cutting device 40 and the position stability during the rotation of the cutting device 40 relative to the support arm 62. The two lateral guides 64 are respectively connected to the cutting device 40, and the relative fixation of the two lateral guides 64 is realized through the cutting device 40, eliminating the need for additional fixing parts to connect the two lateral guides 64 or the two support arms 62, saving the fitting cost.

[0502] In some feasible ways, the uppermost support arm 62 is connected to the drive unit. The drive unit is connected to the uppermost support arm 62 to simultaneously drive the two support arms 62 to rotate synchronously relative to the support 61. Therefore, there is no need to set a connection structure between the drive unit and the lower support arm 62, which is beneficial to reducing the design difficulty of the connection structure between the drive unit and the two support arms 62.

[0503] In some feasible ways, the two support arms 62 are connected to each other; and / or, the two lateral guides 64 are connected to each other.

[0504] In some examples, the two support arms 62 are connected to each other. The two support arms 62 are connected by an additional connecting component. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the connecting component, which is beneficial to further improving the connection stability among the support 61, the support arm 62, the lateral guide 64, and the connecting component and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0505] In some examples, the two lateral guides 64 are connected to each other. The two lateral guides 64 are connected by a connecting member. A four-bar linkage structural relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the connecting member, which is beneficial to further improve the connection stability among the support 61, the support arms 62, the lateral guides 64, and the connecting member, and the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0506] In some examples, the two support arms 62 are connected to each other, and the two lateral guides 64 are connected to each other.

[0507] In some realizable ways, the position adjustment device 50 further includes a lateral driving assembly 70. The lateral driving assembly 70 is configured to apply a force perpendicular to the vertical direction Y to the cutting device 40 to drive the cutting device 40 to slide relative to the lateral guide 64. By means of driving the cutting device 40 to move laterally by the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0508] In some realizable ways, the support arm 62 is rotatably connected to the support 61 through a horizontal shaft 80. The support arm 62 includes a first connecting portion 62b. The lateral guide 64 is rotatably connected to the first connecting portion 62b. The way of connecting the support arm 62 and the support 61 through the horizontal shaft 80 is beneficial to reduce the structural design difficulty and disassembly and assembly difficulty of forming a rotating pair between the support arm 62 and the support 61, and reduce the processing cost and maintenance cost.

[0509] In some realizable ways, the support arm 62 includes a second connecting portion 62c. The driving unit is connected to the second connecting portion 62c. The second connecting portion 62c is located between the first connecting portion 62b and the horizontal shaft 80. The second connecting portion 62c is located on the side of the horizontal shaft 80 facing the first connecting portion 62b, so that the overall structure formed by the driving unit and the support arm 62 is relatively compact and occupies a small space.

[0510] In some realizable ways, each support arm 62 includes at least two lateral connecting arms 621. All the lateral connecting arms 621 form a lateral connecting arm group. A first sub-support arm 622 is arranged on one side of the lateral connecting arm group, and a second sub-support arm 623 is arranged on the other side. Exemplarily, along the direction perpendicular to the lateral guide 64, at least two lateral connecting arms 621 are arranged at intervals.

[0511] The number of the transverse connecting arms 621 is set to at least two, which is beneficial to improving the mechanical strength of each support arm 62. In addition, at least one transverse connecting arm 621 can be selected to be connected to the driving unit, improving the layout flexibility of the driving unit.

[0512] In some feasible ways, each support arm 62 includes a transverse connecting arm 621. A first sub-support arm 622 is arranged on one side of the transverse connecting arm 621, and a second sub-support arm 623 is arranged on the other side.

[0513] In some feasible ways, Figure 15 Schematically shows a partial structure of the cutting system 20. Refer to Figure 15 As shown, the uppermost support arm 62 includes a transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. A first sub-support arm 622 is arranged on one side of the transverse connecting arm 621, and a second sub-support arm 623 is arranged on the other side. The end of the first sub-support arm 622 is rotatably connected to the support 61. The transverse guide 64 is rotatably connected to the end of the second sub-support arm 623. The transverse connecting arm 621 is connected to the driving unit.

[0514] By applying a torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The transverse connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improving the overall structural compactness of the upper support arm 62 and occupying a small space.

[0515] Figure 16 Schematically shows a partial structure of the cutting system 20. Refer to Figure 16 As shown, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes at least one support arm 62, a support 61, a driving unit, a transverse guide 64 and a transverse driving assembly 70.

[0516] The support arm 62 includes a transverse connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is disposed on one side of the transverse connecting arm 621, and the second sub-support arm 623 is disposed on the other side. The end of the first sub-support arm 622 is rotatably connected to the support 61. The transverse guide 64 is rotatably connected to the end of the second sub-support arm 623. The cutting device 40 is connected to the transverse guide 64. The cutting device 40 includes a cutter head 42. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the longitudinal direction of the transverse guide 64. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to perform a height adjustment operation to adjust the ground height of the cutting device 40. The rotational speed of the cutter head 42 in the first state is greater than or equal to the rotational speed of the cutter head 42 in the second state. The first state is the state after the movement action is completed and the cutting device 40 is started, and the second state is the state of performing the movement action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0517] In each support arm 62, the number of the first sub-support arms 622 is two. Along the longitudinal direction of the transverse guide 64, the first sub-support arms 622 are spaced apart.

[0518] In each support arm 62, the number of the second sub-support arms 623 is two. Along the longitudinal direction of the transverse guide 64, the two second sub-support arms 623 are spaced apart. An accommodation portion 62a is formed between the two second sub-support arms 623.

[0519] In some implementable ways, referring to Figure 16 as shown, the position adjustment device 50 may include a support arm 62.

[0520] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 may be connected to the transverse guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the drive unit, and the transverse guide 64. Under the mutual cooperation of the support arm 62, the support 61, the drive unit, and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the transverse drive assembly 70 drives the cutting device 40 to move along the transverse guide 64 so that the cutting device 40 moves in the longitudinal direction of the transverse guide 64. By means of driving the cutting device 40 to move transversely by the transverse drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0521] An installation structure in which the support arm 62 and the lateral guide 64 are interconnected reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage while realizing the position adjustment of the cutting device 40, which helps to achieve the intelligence and miniaturization of the lawn mower 10.

[0522] Through the position adjustment device 50, the cutting device 40 can be adjusted in the height direction and adjusted in the horizontal direction. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range, improving the working efficiency of the lawn mower 10.

[0523] By applying a torque to the lateral connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The lateral connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improving the overall structural compactness of the support arm 62 and occupying a small space.

[0524] In some feasible ways, each support arm 62 includes at least two lateral connecting arms 621. All the lateral connecting arms 621 form a lateral connecting arm group. The first sub-support arm 622 is arranged on one side of the lateral connecting arm group, and the second sub-support arm 623 is arranged on the other side. Exemplarily, along the direction perpendicular to the lateral guide 64, at least two lateral connecting arms 621 are arranged at intervals.

[0525] In some feasible ways, at least a part of the drive unit is located between the two first sub-support arms 622. At least a part of the drive unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is beneficial to improving the overall structural compactness of the position adjustment device 50, reducing the overall volume and occupying a small space.

[0526] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can pass through the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the structural compactness, reducing the overall volume and occupying a small space.

[0527] Figure 17 Schematically shows a partial structure of the cutting system 20. Refer to Figure 17 As shown, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, a lateral guide 64 and a lateral drive assembly 70.

[0528] Figure 17 In, the cutting device 40 is in the central position. Refer toFigure 17 As shown, the number of support arms 62 and lateral guides 64 is two each. The two support arms 62 are spaced apart in the vertical direction Y. Each support arm 62 includes two sub-support arms 620. One end of each sub-support arm 620 is rotatably connected to the support 61 respectively. The other end of each sub-support arm 620 is rotatably connected to the corresponding lateral guide 64 respectively. Along the length direction of the lateral guide 64, the two sub-support arms 620 of each support arm 62 are spaced apart. An accommodating portion 62a is formed between the two sub-support arms 620. The upper sub-support arm 620 and the lower sub-support arm 620 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. The cutting device 40 is connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. Exemplarily, the cutting device 40 is connected to the two lateral guides 64. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support 61 to perform a height adjustment operation to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the movement operation is completed and the cutting device 40 is started, and the second state is the state of performing the movement operation. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0529] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the driving unit and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support 61, the driving unit and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to move along the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally by the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0530] The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62 and the two lateral guides 64, which is beneficial to further improve the connection stability among the support 61, the support arm 62 and the lateral guide 64 and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0531] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be achieved. Based on this, when the moving direction and the moving path of the lawn mower 10 remain unchanged, by using the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range, improving the working efficiency of the lawn mower 10.

[0532] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be passed through the accommodating portion 62a, so as to effectively utilize the space between the two sub-support arms 620, which is beneficial to improving the structural compactness, reducing the overall volume and occupying less space.

[0533] See Figure 17 As shown, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes at least two support arms 62, at least two lateral guides 64, a support 61, a drive unit, and a lateral drive assembly 70.

[0534] Figure 17 In, the cutting device 40 is in the central position. See Figure 17 As shown, the number of the lateral guides 64 is the same as and corresponds to the number of the support arms 62 one by one. Each of the support arms 62 is arranged at intervals in the vertical direction Y. Each support arm 62 includes two sub-support arms 620. Along the length direction of the lateral guide 64, the two sub-support arms 620 of each support arm 62 are arranged at intervals to form an accommodating portion 62a. One end of each sub-support arm 620 is rotatably connected to the support 61 respectively. The other end of each sub-support arm 620 is rotatably connected to the corresponding lateral guide 64 respectively.

[0535] The upper sub-support arm 620 and the lower sub-support arm 620 are relatively fixed, and / or the two lateral guides 64 are relatively fixed.

[0536] The cutting device 40 is slidably connected to at least one lateral guide 64. Exemplarily, the cutting device 40 is slidably connected to two lateral guides 64. The cutting device 40 includes a cutter head 42. The lateral drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The drive unit is used to drive all the support arms 62 to rotate relative to the support 61 to perform the height adjustment action. Adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0537] In some implementable ways, the number of the support arms 62 and the lateral guides 64 is two each. The two support arms 62 are arranged at intervals in the vertical direction Y.

[0538] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arms 62, the support 61, the drive unit and the lateral guide 64. Under the mutual cooperation of the support arms 62, the support 61, the drive unit and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral drive assembly 70 drives the cutting device 40 to slide on the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0539] Each support arm 62 is relatively fixed; and / or each lateral guide 64 is relatively fixed. A link structure relationship can be formed among the support 61, each support arm 62 and each lateral guide 64, which is beneficial to further improve the connection stability among the support 61, the support arms 62 and the lateral guides 64 and the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0540] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range and improve the working efficiency of the lawn mower 10.

[0541] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can pass through the accommodating portion 62a, so as to effectively utilize the space between the two sub-support arms 620, which is beneficial to improving the structural compactness, reducing the overall volume and occupying less space.

[0542] In some implementable ways, among each support arm 62, the uppermost support arm 62 is connected to the drive unit.

[0543] In some implementable ways, at least two lateral guides 64 are respectively slidably connected to the cutting device 40.

[0544] At least two lateral guide members 64 are respectively slidably connected to the cutting device 40. A link structure relationship can be formed among the support 61, each support arm 62, each lateral guide member 64, and the cutting device 40, which is beneficial to further improve the connection stability among the support 61, the support arms 62, the lateral guide members 64, and the cutting device 40. Each lateral guide member 64 is respectively connected to the cutting device 40, and the relative fixation of the two lateral guide members 64 is achieved through the cutting device 40, eliminating the need for additional fixing parts for connecting each lateral guide member 64 or each support arm 62, and saving the accessory cost. At the same time, based on the result of the link structure relationship, it is ensured that during the height adjustment process of the cutting device 40, the angle between the cutter head 42 and the ground always remains the same.

[0545] In some realizable ways, at least two support arms 62 are connected to each other. And / or, at least two lateral guide members 64 are connected to each other.

[0546] Each support arm 62 is connected to each other. Each support arm 62 is connected by an additionally provided connecting component. A link structure relationship can be formed among the support 61, each support arm 62, each lateral guide member 64, and the connecting component, which is beneficial to further improve the connection stability among the support 61, the support arms 62, the lateral guide members 64, and the connecting component, and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0547] Figure 18 Schematically shows a partial structure of the cutting system 20. Refer to Figure 18 As shown, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes at least two support arms 62, at least two lateral guide members 64, a support 61, a driving unit, and a lateral driving assembly 70.

[0548] The number of lateral guide members 64 is the same as and corresponds one-to-one with the number of support arms 62. Each support arm 62 is arranged at intervals along the vertical direction Y. Each support arm 62 includes a lateral connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The end portions of the first sub-support arms 622 of each support arm 62 are respectively rotatably connected to the support 61. The end portions of the second sub-support arms 623 of each support arm 62 are respectively rotatably connected to the corresponding lateral guide members 64.

[0549] Each support arm 62 is relatively fixed; and / or each lateral guide 64 is relatively fixed. The cutting device 40 is connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The drive unit is used to drive all the support arms 62 to rotate relative to the support 61 to perform a height adjustment operation to adjust the ground height of the cutting device 40. The rotational speed of the cutter head 42 in the first state is greater than or equal to the rotational speed of the cutter head 42 in the second state. The first state is the state after the movement operation is completed and the cutting device 40 is started, and the second state is the state of performing the movement operation. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0550] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arms 62, the support 61, the drive unit and the lateral guide 64. Under the mutual cooperation of the support arms 62, the support 61, the drive unit and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral drive assembly 70 drives the cutting device 40 to move along the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally by the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0551] Adopting the installation structure in which the support arms 62 and the lateral guides 64 are connected to each other reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage while realizing the position adjustment of the cutting device 40, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0552] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range and improve the working efficiency of the lawn mower 10.

[0553] See Figure 18 As shown in the figure, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes at least two support arms 62, at least two lateral guides 64, a support 61, a drive unit and a lateral drive assembly 70.

[0554] The number of the lateral guide members 64 is consistent with and corresponds one by one to the number of the support arms 62. The respective support arms 62 are arranged at intervals in the vertical direction Y. Each support arm 62 includes a lateral connecting arm 621 and two sub-support arms 620. Each of the two sub-support arms 620 includes a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The end portions of the first sub-support arms 622 of each support arm 62 are respectively rotatably connected to the support 61. The lateral guide member 64 is rotatably connected to the end portion of the second sub-support arm 623 of the corresponding support arm 62.

[0555] The respective support arms 62 are relatively fixed. And / or, the respective lateral guide members 64 are relatively fixed.

[0556] The cutting device 40 is slidably connected to at least one lateral guide member 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide member 64. The driving unit is used to drive all the support arms 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0557] When the position adjustment device 50 in the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide member 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arms 62, the support 61, the driving unit and the lateral guide members 64. Under the mutual cooperation of the support arms 62, the support 61, the driving unit and the lateral guide members 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to slide on the lateral guide member 64 so that the cutting device 40 moves in the length direction of the lateral guide member 64. By means of driving the cutting device 40 to move laterally by the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0558] The respective support arms 62 are relatively fixed; and / or, the respective lateral guide members 64 are relatively fixed. A link structure relationship can be formed among the support 61, the respective support arms 62 and the respective lateral guide members 64, which is beneficial to further improve the connection stability among the support 61, the support arms 62 and the lateral guide members 64 and the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0559] In some implementable ways, the position adjustment device 50 includes two support arms 62 and two lateral guides 64. The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. A four-bar linkage structural relationship can be formed among the support 61, the two support arms 62, and the two lateral guides 64, which is conducive to further improving the connection stability among the support 61, the support arms 62, and the lateral guides 64, as well as the position stability during the rotation of the cutting device 40 relative to the support arms 62.

[0560] In some implementable ways, in each support arm 62, the number of the first sub-support arms 622 is two. Along the length direction of the lateral guide 64, the two first sub-support arms 622 are spaced apart. At least a part of the driving unit is located between the two first sub-support arms 622.

[0561] In some implementable ways, at least a part of the driving unit is located between the two first sub-support arms 622. At least a part of the driving unit can be located between the two first sub-support arms 622 of the same support arm 62, so as to effectively utilize the space between the two first sub-support arms 622, which is conducive to improving the compactness of the overall structure of the position adjustment device 50, reducing the overall volume, and occupying less space.

[0562] In some implementable ways, in each support arm 62, the number of the second sub-support arms 623 is two. Along the length direction of the lateral guide 64, the two second sub-support arms 623 are spaced apart. A receiving portion 62a is formed between the two second sub-support arms 623.

[0563] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can pass through the receiving portion 62a, so as to effectively utilize the space between the two second sub-support arms 623, which is conducive to improving the structural compactness, reducing the overall volume, and occupying less space.

[0564] In some implementable ways, the number of the supports 61 is two. Along the length direction of the lateral guide 64, the two supports 61 are spaced apart. The number of the first sub-support arms 622 is two. The end portions of the two first sub-support arms 622 are respectively rotatably connected to the supports 61. At least a part of the driving unit is located between the two supports 61, so as to effectively utilize the space between the two supports 61, which is conducive to improving the compactness of the overall structure of the position adjustment device 50, reducing the overall volume, and occupying less space.

[0565] See Figure 4As shown in the figure, an embodiment of the present application provides a position adjustment device 50 for adjusting the position of a cutting device 40 of a lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, a lateral guide 64, and a lateral drive assembly 70.

[0566] The number of the support arms 62 and the lateral guides 64 is two each. The two support arms 62 are spaced apart in the vertical direction Y. Each support arm 62 includes a lateral connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is disposed on one side of the lateral connecting arm 621, and the second sub-support arm 623 is disposed on the other side. The end portions of the first sub-support arms 622 of each support arm 62 are respectively rotatably connected to the support 61. The two lateral guides 64 are respectively rotatably connected to the end portions of the second sub-support arms 623 of the two support arms 62. The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. The cutting device 40 is connected to at least one lateral guide 64. The cutting device 40 includes a cutter disc 42. The lateral drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide 64. The drive unit is used to drive the two support arms 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground clearance of the cutting device 40. The rotational speed of the cutter disc 42 in the first state is greater than or equal to the rotational speed of the cutter disc 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0567] In each support arm 62, the number of the first sub-support arms 622 is two. The two first sub-support arms 622 are spaced apart in the length direction of the lateral guide 64. At least a part of the drive unit is located between the two first sub-support arms 622.

[0568] In each support arm 62, the number of the second sub-support arms 623 is two. The two second sub-support arms 623 are spaced apart in the length direction of the lateral guide 64. An accommodation portion 62a is formed between the two second sub-support arms 623.

[0569] When the position adjustment device 50 of the embodiment of the present application is applied to a lawn mower, the cutting device 40 can be slidably connected to the lateral guide member 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the drive unit and the lateral guide member 64. Under the mutual cooperation of the support arm 62, the support 61, the drive unit and the lateral guide member 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral drive assembly 70 drives the cutting device 40 to move along the lateral guide member 64, so that the cutting device 40 moves in the length direction of the lateral guide member 64. By driving the cutting device 40 to move laterally through the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0570] The two support arms 62 are relatively fixed; and / or, the two lateral guide members 64 are relatively fixed. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, and the two lateral guide members 64, which is beneficial to further improve the connection stability among the support 61, the support arm 62, and the lateral guide member 64, and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0571] Adopting the installation structure in which the support arm 62 and the lateral guide member 64 are connected to each other, while realizing the position adjustment of the cutting device 40, it reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0572] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 obtains a larger mowing range and improves the working efficiency of the lawn mower 10.

[0573] A part of the drive unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is beneficial to improving the compactness of the overall structure of the position adjustment device 50, reducing the overall volume, and occupying less space.

[0574] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can pass through the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the structural compactness, reducing the overall volume, and occupying less space.

[0575] In some feasible embodiments, two lateral guides 64 are respectively slidably connected to the cutting device 40. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, the two lateral guides 64, and the cutting device 40, which is beneficial to further improve the connection stability among the support 61, the support arms 62, the lateral guides 64, and the cutting device 40. The two lateral guides 64 are respectively connected to the cutting device 40. The relative fixation of the two lateral guides 64 is achieved through the cutting device 40, eliminating the need for additional fixing parts to connect the two lateral guides 64 or the two support arms 62, and saving the fitting cost.

[0576] In some feasible embodiments, the number of supports 61 is two. Along the length direction of the lateral guide 64, the two supports 61 are spaced apart. The end portions of the two first sub-support arms 622 are respectively rotatably connected to the supports 61. At least a part of the drive unit is located between the two supports 61 to effectively utilize the space between the two supports 61, which is beneficial to improving the compactness of the overall structure of the position adjustment device 50, reducing the overall volume, and occupying less space.

[0577] In some feasible embodiments, as shown in Figure 17 shown, the lateral guide 64 includes a first end 641 and a second end 642. The first end 641 and the second end 642 are respectively rotatably connected to the two second sub-support arms 623. The cutting device 40 moves between the first end 641 and the second end 642.

[0578] The cutting device 40 moves between the ends of the lateral guide 64, further increasing the adjustment range of the cutting device 40 in the horizontal direction. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, the lawn mower 10 can obtain a larger mowing range, improving the working efficiency of the lawn mower 10.

[0579] Figure 19 Schematically shows a partial structure of the cutting system 20. As shown in Figure 19 shown, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, a lateral guide 64, and a lateral drive assembly 70.

[0580] The number of the support arms 62 and the lateral guides 64 is two. The two support arms 62 are arranged at intervals in the vertical direction Y. Each support arm 62 includes two sub-support arms 620. One ends of the sub-support arms 620 are respectively rotatably connected to the support. The other ends of the sub-support arms 620 are respectively rotatably connected to the corresponding lateral guides 64. Along the length direction of the lateral guides 64, the two sub-support arms 620 of each support arm 62 are arranged at intervals. A receiving portion 62a is formed between the two sub-support arms 620. The upper sub-support arm 620 and the lower sub-support arm 620 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. The two upper sub-support arms 620 are connected by a lateral connecting arm 621. The cutting device 40 is connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0581] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the driving unit and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support 61, the driving unit and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to move along the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0582] The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62 and the two lateral guides 64, which is beneficial to further improve the connection stability among the support 61, the support arm 62 and the lateral guide 64 and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0583] An installation structure in which the support arm 62 and the lateral guide 64 are connected to each other reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the fuselage while realizing the position adjustment of the cutting device 40, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0584] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, by adopting the above-mentioned position adjustment device 50, the lawn mower 10 can obtain a larger mowing range, improving the working efficiency of the lawn mower 10.

[0585] In some realizable ways, the lateral connecting arm 621 is connected to the driving unit. By applying a torque to the lateral connecting arm 621, the sub-support arm 620 can be driven to rotate relative to the support, and at the same time, the sub-support arm 620 drives the driver to move vertically. The lateral connecting arm 621 is located between the two sub-support arms 620 as a force-bearing structure, which is beneficial to improving the overall structural compactness of the support arm 62 and occupying less space.

[0586] In some realizable ways, the number of supports 61 is two. Along the length direction of the lateral guide 64, the two supports 61 are arranged at intervals. The end parts of the two sub-support arms 620 of each support arm 62 are respectively rotatably connected to the support 61. A part of the driving unit is located between the two supports 61.

[0587] At least a part of the driving unit is located between the two supports 61 to effectively utilize the space between the two supports 61, which is beneficial to improving the overall structural compactness of the position adjustment device, reducing the overall volume and occupying less space.

[0588] See Figure 19 As shown, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes at least two support arms 62, at least two lateral guides 64, a support 61, a driving unit, and a lateral driving assembly 70.

[0589] The number of the lateral guides 64 is the same as and corresponds one by one to the number of the support arms 62. The support arms 62 are arranged at intervals along the vertical direction Y. Each support arm 62 includes two sub-support arms 620. Along the length direction of the lateral guide 64, the two sub-support arms 620 of each support arm 62 are arranged at intervals to form a receiving portion 62a. One end of each sub-support arm 620 is respectively rotatably connected to the support. The other end of each sub-support arm 620 is respectively rotatably connected to the corresponding lateral guide 64.

[0590] Each sub-support arm 620 is relatively fixed. The sub-support arm 620 located above is relatively fixed to the sub-support arm 620 located below. And / or, each lateral guide 64 is relatively fixed.

[0591] The two sub-support arms 620 located at the uppermost position are connected by a lateral connecting arm 621. The cutting device 40 is slidably connected to at least one lateral guide 64. The cutting device includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action in the length direction of the lateral guide 64. The driving unit is used to drive all the support arms 62 to rotate relative to the support 61 to adjust the ground height of the cutting device 40. The rotational speed of the cutter head 42 in the first state is greater than or equal to the rotational speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0592] When the position adjustment device 50 of the embodiment of the present application is applied to the lawn mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support 61, the driving unit and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support 61, the driving unit and the lateral guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to slide on the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0593] Each support arm 62 is relatively fixed. And / or, each lateral guide 64 is relatively fixed. A link structure relationship can be formed among the support 61, each support arm 62, and each lateral guide 64, which is beneficial to further improve the connection stability among the support 61, the support arm 62, and the lateral guide 64 and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0594] In some realizable ways, the lateral connecting arm 621 of at least one support arm 62 is connected to the driving unit. By applying a torque to the lateral connecting arm 621, the sub-support arm 620 can be driven to rotate relative to the support, and at the same time, the sub-support arm 620 drives the driver to move vertically. The lateral connecting arm 621 is used as a force-bearing structure and is located between the two sub-support arms 620, which is beneficial to improving the overall structural compactness of the support arm 62 and occupying a small space.

[0595] An embodiment of the present application further provides a cutting system 20 for a lawn mower 10. The cutting system 20 includes a cutting device 40 and a position adjustment device 50. The cutting device 40 includes a driver 41 and a cutter disc 42. The cutter disc 42 is connected to the output end of the driver 41. The driver 41 is used to drive rotation. The cutter disc 42 is used for mowing grass.

[0596] The driver 41 is connected to the position adjustment device 50. The position adjustment device 50 is used to drive the driver 41 to perform a lateral movement action so that the cutting device 40 moves between a central position and a side cutting position, and the position adjustment device 50 is used to drive the driver 41 to perform a height adjustment action to adjust the ground height of the cutting device 40.

[0597] After the lateral movement action is completed and the state of starting the driver 42 is the fourth state, the state of the driver 41 performing the lateral movement action is the fifth state, and the rotational speed of the cutter disc 42 in the third state is greater than or equal to the rotational speed of the cutter disc 42 in the fourth state.

[0598] When the rotational speed of the cutter disc 42 in the fourth state is greater than the rotational speed of the cutter disc 42 in the fifth state, the rotational speed of the cutter disc 42 when the cutting device 40 performs a lateral movement action is less than the rotational speed of the cutter disc 42 when the cutting device is working. On the one hand, it can reduce the interference caused by the high-speed rotation of the cutter disc 42 to the lateral movement of the cutting device 40, effectively reduce the shaking during the lateral movement of the cutting device 40, and improve the stability of the movement process of the cutting device 40; on the other hand, it can reduce the resistance received during the lateral movement of the cutting device 40 and save energy consumption. When the rotational speed of the cutter disc 42 in the fourth state is equal to the rotational speed of the cutter disc 42 in the fifth state, when the cutting device 40 performs a lateral movement action, the rotational speed of the cutter disc 42 is consistent with the rotational speed during mowing work. On the one hand, it can reduce the acceleration and deceleration actions of the cutting device 40, improve the speed of position adjustment of the cutting device 40, and thus improve the working efficiency of the lawn mower 10; on the other hand, the acceleration and deceleration actions of the cutting device 40 are reduced, which can reduce the load on the motor of the cutting device 40 and improve the service life of the motor.

[0599] In addition, the state of the driver 41 performing height adjustment is the sixth state, and the rotational speed of the cutter disc 42 in the fourth state is greater than or equal to the rotational speed of the cutter disc 41 in the sixth state.

[0600] When the rotational speed of the cutter head 42 in the fourth state is greater than that in the sixth state, the rotational speed of the cutter head 42 when the driver 41 performs the height adjustment action is less than the rotational speed of the cutter head 42 when the driver 41 starts. On the one hand, it can reduce the interference caused by the high-speed rotation of the cutter head 42 to the movement of the driver 41, effectively reduce the shaking during the movement of the cutting device 40, and improve the stability of the movement process of the cutting device 40. On the other hand, it can reduce the resistance received during the movement of the driver 41 and save energy consumption. When the rotational speed of the cutter head 42 in the fourth state is equal to that in the sixth state, when the driver 41 performs the height adjustment action, the rotational speed of the cutter head 42 is consistent with the rotational speed of the cutter head 42 during the mowing operation. On the one hand, it can reduce the acceleration and deceleration actions of the driver 41, improve the speed of position adjustment of the cutting device 40, and thus improve the working efficiency of the lawn mower 10. On the other hand, the reduction of the acceleration and deceleration actions of the driver 41 can reduce the load on the motor and improve the service life of the motor.

[0601] In addition, the state in which the driver 41 performs the lateral movement is the fifth state, and the rotational speed of the cutter head 42 in the fifth state is 0.

[0602] In addition, the state in which the driver 41 performs the height adjustment action is the sixth state, and the rotational speed of the cutter head 42 in the sixth state is 0.

[0603] In addition, the rotational speed of the cutter head 42 in the fifth state is equal to that in the sixth state.

[0604] In addition, the cutting device 40 of this embodiment further includes a cutter head cover 43. The cutter head cover 43 is connected to the driver 41. Along the vertical direction Y, the cutter head 42 is disposed below the cutter head cover 43.

[0605] When the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, the position adjustment device 50 in the cutting system 20 can adjust the position of the cutting device 40. Under the driving action of the position adjustment device 50, the cutting device 40 can move between the central position and the side cutting position. When the cutting device 40 is in the side cutting position, the cutting device 40 can trim the area near the lawn boundary, which is beneficial to avoiding a large area of uncut lawn remaining at the lawn boundary. At the same time, the lawn mower 10 protects the cutter head 42 through the cutter head cover 43 and does not require an additional bottom protection plate. The cutter head cover 43 of the lawn mower 10 will not crush the lawn, which is beneficial to improving the cutting efficiency and cutting effect.

[0606] In addition, the position adjustment device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is in the side cutting position, along the vertical direction Y, the second lower edge 43a of the cutter head cover 43 can be lower than the first lower edge 311 of the side skirt 31, and the second lower edge 43a of the cutter head cover 43 can be lower than the cutter head 42. There is a large safety distance between the second lower edge 43a of the cutter head cover 43 and the cutter head 42. When the lawn mower 10 is being carried, the operator's palm can be placed against the side skirt 31, and the fingertips of the fingers can be hooked inside the cutter head cover 43. Under the protection of the cutter head cover 43, most of the operator's fingers are located outside the cutter head cover 43, making it difficult for the operator's fingers to touch the cutter head 42. At the same time, since the second lower edge 43a of the cutter head cover 43 is lower than the cutter head 42, even if the operator's fingers bypass the second lower edge 43a of the cutter head cover 43 and are hooked inside the cutter head cover 43, the fingertips of the fingers are not likely to touch the cutter head 42.

[0607] Therefore, when the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, the lawn mower 10 can not only effectively cut the lawn near the lawn boundary, improving the cutting efficiency and cutting effect, but also adjust the position of the cutting device 40 through the position adjustment device 50, so that the cutting device 40 in the side cutting position can meet the safety requirements for using the lawn mower 10 and will not cause injury to people or animals.

[0608] In some implementable ways, the cutter head cover 43 has a second lower edge 43a. The cutter head 42 includes blades 421. Along the vertical direction Y, the minimum vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 is L1 (see Figure 2 shown). Along the vertical direction Y, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 is greater than 3 mm. The minimum vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 refers to the minimum value among all the vertical distances between different positions on the lower surface of the blade 421 and different positions on the second lower edge 43a of the cutter head cover 43.

[0609] The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43, the greater the distance between the fingers hooked inside the cutter head cover 43 by the operator during the process of carrying the lawn mower 10 and the cutter head 42, so that it is more difficult for the operator's fingers to touch the cutter head 42. When the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a is greater than or equal to 3 mm, it is ensured that the operator's fingers will not touch the cutter head 42 during the carrying process.

[0610] In some realizable ways, the cutter head cover 43 has a second lower edge 43a. The cutter head 42 includes blades 421. Along the vertical direction Y, the maximum vertical distance L3 between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 is less than or equal to 15 millimeters. The maximum vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43 refers to the maximum value among all the vertical distances between different positions on the lower surface of the blade 421 and different positions on the second lower edge 43a of the cutter head cover 43.

[0611] When the height of the cutter head 42 is fixed, the greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43, the smaller the distance between the second lower edge 43a of the cutter head cover 43 and the ground, and the worse the obstacle-crossing performance of the lawn mower 10.

[0612] In some realizable ways, the height adjustment assembly 60 includes a support arm 62, a drive unit, a support 61, and a lateral guide 64. The support arm 62 is rotatably connected to the support 61. The lateral guide 64 is connected to the support arm 62. The driver 41 is slidably connected to the support arm 62 and the driver 41 is rotatably connected to the support arm 62. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to adjust the height of the lateral guide 64. The lateral guide 64 is used to be slidably connected to the cutting device 40. The cutting device 40 slides relative to the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64.

[0613] When the drive unit drives the support arm 62 to rotate relative to the support 61, the cutting device 40 also rotates relative to the support 61, so that the support arm 62 drives the cutting device 40 to adjust the height. The cutting device 40 moves along the length direction of the lateral guide 64, realizing the adjustment of the lateral position of the cutting device 40.

[0614] Adopting the installation structure in which the support arm 62 and the lateral guide 64 are connected to each other reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the body while realizing the position adjustment of the cutting device 40, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0615] Through the position adjustment device 50, the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction can be realized. Based on this, when the moving direction and moving path of the lawn mower 10 remain unchanged, adopting the above-mentioned position adjustment device 50 enables the lawn mower 10 to obtain a larger mowing range and improves the working efficiency of the lawn mower 10.

[0616] The connection mode between the driver 41 and the support arm 62 through the lateral guide 64 is beneficial to reducing the design difficulty of the connection structure between the driver 41 and the support arm 62 and the disassembly and assembly difficulty between the driver 41 and the support arm 62, and reducing the processing cost and maintenance cost.

[0617] In some implementable ways, the number of both the support arm 62 and the lateral guide 64 is two. The two support arms 62 are arranged at intervals along the vertical direction Y. One end of each of the two support arms 62 is rotatably connected to the support 61 respectively. The other end of each of the two support arms 62 is rotatably connected to the corresponding lateral guide 64 respectively. The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. The cutting device 40 is connected to at least one lateral guide 64. Exemplarily, the cutting device 40 is slidably connected to at least one lateral guide 64. At least one support arm 62 is connected to the drive unit.

[0618] The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed among the support 61, the two support arms 62, and the two lateral guides 64, which is beneficial to further improving the connection stability among the support 61, the support arm 62, and the lateral guide 64 and the position stability during the rotation of the cutting device 40 relative to the support arm 62.

[0619] An embodiment of the present application provides a lawn mower 10, including a body 30 and a position adjustment device 50.

[0620] The body 30 includes a side skirt 31. The position adjustment device 50 is used to adjust the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, and a lateral guide 64.

[0621] One end of the support arm 62 is rotatably connected to the support 61. The other end of the support arm 62 is connected to the lateral guide 64. The lateral guide 64 includes a first end 641 and a second end 642 along its length direction. The first end 641 is located between the second end 642 and the side skirt 31. The cutting device 40 is slidably connected to the lateral guide 64. The cutting device 40 includes a cutter head 42. The cutting device 40 performs a moving action between the first end 641 and the second end 642 of the lateral guide 64 under the action of a driving force. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0622] The lawn mower 10 according to the embodiment of the present application includes a position adjustment device 50 and a cutting device 40. The position adjustment device 50 can adjust the relative position between the cutting device 40 and the fuselage 30. Under the driving action of the position adjustment device 50, the cutting device 40 can move in the lateral direction X of the lawn mower 10. Without changing the movement path of the lawn mower 10, the mowing range of the lawn mower 10 is expanded, thereby improving the mowing efficiency.

[0623] The first end 641 of the lateral guide member 64 is located between the second end 642 and the side skirt 31. When the cutting device 40 moves to the first end 641 of the lateral guide member 64, the cutting device 40 is close to the side skirt 31. When the cutting device 40 moves to the second end 642 of the lateral guide member 64, the cutting device 40 is away from the side skirt 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide member 64, the adjustment of different cutting positions of the lawn mower 10 under the same path is realized.

[0624] The embodiment of the present application provides a lawn mower 10, including a fuselage 30 and a position adjustment device 50.

[0625] The fuselage 30 includes a side skirt 31. The position adjustment device 50 is used to adjust the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a driving unit, a lateral guide member 64, and a lateral driving assembly 70.

[0626] One end of the support arm 62 is rotatably connected to the support 61. The other end of the support arm 62 is connected to the lateral guide member 64. The lateral guide member 64 includes a first end 641 and a second end 642 along its length direction. The first end 641 is located between the second end 642 and the side skirt 31. The cutting device 40 is slidably connected to the lateral guide member 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action between the first end 641 and the second end 642 of the lateral guide member 64. The driving unit is used to drive the support arm 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0627] The lawn mower 10 according to an embodiment of the present application includes a position adjustment device 50 and a cutting device 40. The position adjustment device 50 can adjust the relative position between the cutting device 40 and the fuselage 30. Under the driving action of the position adjustment device 50, the cutting device 40 can move in the lateral direction X of the lawn mower 10. Without changing the movement path of the lawn mower 10, the mowing range of the lawn mower 10 is expanded, thereby improving the mowing efficiency.

[0628] The first end 641 of the lateral guide member 64 is located between the second end 642 and the side skirt 31. When the cutting device 40 moves to the first end 641 of the lateral guide member 64, the cutting device 40 is close to the side skirt 31. When the cutting device 40 moves to the second end 642 of the lateral guide member 64, the cutting device 40 is away from the side skirt 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide member 64, the adjustment of different cutting positions of the lawn mower 10 along the same path is realized.

[0629] The lateral drive assembly 70 drives the cutting device 40 to slide along the lateral guide member 64, so that the cutting device 40 moves in the length direction of the lateral guide member 64. By the way that the lateral drive assembly 70 drives the cutting device 40 to move laterally, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0630] An embodiment of the present application provides a lawn mower 10, including a fuselage 30 and a position adjustment device 50.

[0631] The fuselage 30 includes a side skirt 31. The position adjustment device 50 is used to adjust the position of the cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, a lateral guide member 64, and a lateral drive assembly 70.

[0632] The number of the support arms 62 and the lateral guides 64 is two each. The two support arms 62 are arranged at intervals in the vertical direction Y. One end of each of the two support arms 62 is rotatably connected to the support 61 respectively. The other end of each of the two support arms 62 is rotatably connected to the corresponding lateral guide 64 respectively. The lateral guide 64 includes a first end 641 and a second end 642 along its length direction. The first end 641 is located between the second end 642 and the side skirt 31. The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. The cutting device 40 is slidably connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action between the first end 641 and the second end 642 of the lateral guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support 61 to adjust the ground height of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0633] The lawn mower 10 according to the embodiment of the present application includes a position adjusting device 50 and a cutting device 40. The position adjusting device 50 can adjust the relative position between the cutting device 40 and the fuselage 30. Under the driving action of the position adjusting device 50, the cutting device 40 can move in the lateral direction X of the lawn mower 10, expanding the mowing range of the lawn mower 10 without changing the movement path of the lawn mower 10, thereby improving the mowing efficiency.

[0634] The first end 641 of the lateral guide 64 is located between the second end 642 and the side skirt 31. When the cutting device 40 moves to the first end 641 of the lateral guide 64, the cutting device 40 is close to the side skirt 31. When the cutting device 40 moves to the second end 642 of the lateral guide 64, the cutting device 40 is away from the side skirt 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide 64, the adjustment of different cutting positions of the lawn mower 10 under the same path is realized.

[0635] The lateral driving assembly 70 drives the cutting device 40 to slide along the lateral guide 64 so that the cutting device 40 moves in the length direction of the lateral guide 64. By the way of driving the cutting device 40 to move laterally by the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0636] The embodiment of the present application provides a lawn mower 10, including a fuselage 30 and a position adjusting device 50.

[0637] The machine body 30 includes side skirt plates 31. A position adjustment device 50 is used to adjust the position of a cutting device 40 of the lawn mower 10. The position adjustment device 50 includes a support arm 62, a support 61, a drive unit, a lateral guide 64, and a lateral drive assembly 70.

[0638] The support arm 62 includes a lateral connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is disposed on one side of the lateral connecting arm 621, and the second sub-support arm 623 is disposed on the other side of the lateral connecting arm 621. The end of the first sub-support arm 622 is rotatably connected to the support 61. The lateral guide 64 is rotatably connected to the end of the second sub-support arm 623. The lateral guide 64 includes a first end 641 and a second end 642 along its length direction. The first end 641 is located between the second end 642 and the side skirt plate 31. The cutting device 40 is slidably connected to the lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action between the first end 641 and the second end 642 of the lateral guide 64. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 to adjust the ground clearance of the cutting device 40. The rotation speed of the cutter head 42 in the first state is greater than or equal to the rotation speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started, and the second state is the state of performing the moving action. The cutting device 40 is used for mowing grass. The cutting device 40 is used for mowing grass.

[0639] In each support arm 62, the number of the first sub-support arms 622 is two. Along the length direction of the lateral guide 64, the two first sub-support arms 622 are spaced apart. A part of the drive unit is located between the two first sub-support arms 622.

[0640] In each support arm 62, the number of the second sub-support arms 623 is two. Along the length direction of the lateral guide 64, the two second sub-support arms 623 are spaced apart. An accommodation portion 62a is formed between the two second sub-support arms 623.

[0641] The lawn mower 10 according to the embodiment of the present application includes a position adjustment device 50 and a cutting device 40. The position adjustment device 50 can adjust the relative position between the cutting device 40 and the machine body 30. Under the driving action of the position adjustment device 50, the cutting device 40 can move in the lateral direction X of the lawn mower 10, and the mowing range of the lawn mower 10 is expanded without changing the movement path of the lawn mower 10, thereby improving the mowing efficiency.

[0642] The first end 641 of the lateral guide member 64 is located between the second end 642 and the side skirt 31. When the cutting device 40 moves to the first end 641 of the lateral guide member 64, the cutting device 40 approaches the side skirt 31. When the cutting device 40 moves to the second end 642 of the lateral guide member 64, the cutting device 40 moves away from the side skirt 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide member 64, the adjustment of different cutting positions of the lawn mower 10 under the same path is achieved.

[0643] The lateral drive assembly 70 drives the cutting device 40 to slide along the lateral guide member 64, so that the cutting device 40 moves in the length direction of the lateral guide member 64. By driving the cutting device 40 to move laterally by the lateral drive assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0644] By applying a torque to the lateral connecting arm 621, the first sub-support arm 622 can be driven to rotate relative ...

Claims

1. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one. The at least two support arms are arranged at intervals in the vertical direction. Each of the support arms includes two sub-support arms. Along the length direction of the transverse guide member, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion. One end of each sub-support arm can be rotatably connected to the support, and the other end of each sub-support arm can be rotatably connected to the end of the corresponding transverse guide member. The upper sub-support arm is relatively fixed to the lower sub-support arm, and / or the at least two transverse guide members are relatively fixed, The cutting device is connected to at least one of the transverse guides, the cutting device comprises a cutter disc, the transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide, and the drive unit is used to drive the two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device relative to the ground; The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state where the moving action is completed and the cutting device is started, and the second state is a state where the moving action is executed.

2. The position adjustment device according to claim 1, characterized in that: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

3. The position adjustment device according to claim 2, characterized in that: The uppermost support arm is connected to the driving unit.

4. The position adjustment device according to claim 1, characterized in that: The at least two transverse guides are respectively connected to the cutting devices.

5. The position adjustment device according to claim 1, characterized in that: The at least two support arms are connected to each other; and / or the at least two transverse guide members are connected to each other.

6. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one. The at least two support arms are arranged at intervals in the vertical direction. Each of the support arms includes a transverse connecting arm and two sub-support arms. Each of the two sub-support arms includes a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side. The ends of the first sub-support arm of each support arm are rotatably connected to the support, and the ends of the transverse guide members are rotatably connected to the ends of the second sub-support arms of the corresponding support arms. The at least two support arms are relatively fixed; and / or the at least two transverse guide members are relatively fixed, The cutting device is connected to at least one of the transverse guides, the cutting device comprises a cutter disc, the transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide, and the drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device relative to the ground; The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state where the moving action is completed and the cutting device is started, and the second state is a state where the moving action is executed; In each of the support arms, the number of the first sub-support arms is two, and along the length direction of the transverse guide member, the two first sub-support arms are arranged at intervals; In each of the support arms, the number of the second sub-support arms is two, and along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals, and a receiving portion is formed between the two second sub-support arms.

7. The position adjustment device according to claim 6, characterized in that: Each of the support arms includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group. The first sub-support arm is arranged on one side of the transverse connecting arm group, and the second sub-support arm is arranged on the other side.

8. The position adjustment device according to claim 6, characterized in that: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

9. The position adjustment device according to claim 8, characterized in that: The transverse connecting arm of the uppermost supporting arm is connected to the driving unit.

10. The position adjustment device according to claim 6, characterized in that: The at least two transverse guides are respectively connected to the cutting devices.

11. The position adjustment device according to claim 6, characterized in that: The at least two support arms are connected to each other; and / or the at least two transverse guide members are connected to each other.

12. The position adjustment device according to claim 6, characterized in that: At least a portion of the driving unit is located between two first sub-support arms of the same support arm.

13. The position adjustment device according to claim 6, characterized in that: There are two supports, which are spaced apart along the length direction of the transverse guide member. The ends of the two first sub-support arms of each support arm are rotatably connected to the supports, and at least a part of the drive unit is located between the two supports.

14. The position adjustment device according to claim 6, characterized in that: The transverse guide member includes a first end and a second end, the first end and the second end are respectively rotatably connected to the two second sub-support arms, and the cutting device moves between the first end and the second end.

15. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one. The at least two support arms are arranged at intervals in the vertical direction. Each support arm includes two sub-support arms. Along the length direction of the transverse guide member, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion. One end of each sub-support arm can be rotatably connected to the support, and the other end of each sub-support arm can be rotatably connected to the end of the corresponding transverse guide member. The upper sub-support arm is relatively fixed to the lower sub-support arm, and / or the at least two transverse guide members are relatively fixed. The two uppermost sub-support arms are connected by a transverse connecting arm, the cutting device is connected to at least one of the transverse guides, the cutting device comprises a cutter disc, the transverse driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide, and the driving unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device relative to the ground; The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state where the moving action is completed and the cutting device is started, and the second state is a state where the moving action is executed.

16. The position adjustment device according to claim 15, characterized in that: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

17. The position adjustment device according to claim 16, characterized in that: The transverse connecting arm is connected to the driving unit.

18. The position adjustment device according to claim 15, characterized in that: The at least two transverse guides are respectively connected to the cutting devices.

19. The position adjustment device according to claim 15, characterized in that: The at least two support arms are connected to each other; and / or the at least two transverse guide members are connected to each other.

20. The position adjustment device according to claim 15, characterized in that: There are two supports, which are spaced apart along the length direction of the transverse guide member. The ends of the two sub-support arms of each support arm are rotatably connected to the supports, and at least a part of the drive unit is located between the two supports.

21. The position adjustment device according to any one of claims 1 to 20, characterized in that: The driving unit includes a cam, and the cam includes a helical surface; The support arm is connected to the driving unit, and the support arm abuts against the spiral surface; and / or the cutting device is connected to the driving unit, and the cutting device abuts against the spiral surface; and / or the transverse guide is connected to the driving unit, and the transverse guide abuts against the spiral surface.

22. The position adjustment device according to any one of claims 1 to 20, characterized in that: The transverse guide is a circular shaft, and the end of the transverse guide is connected to the end of the support arm.

23. The position adjustment device according to any one of claims 1 to 20, characterized in that: The transverse drive assembly includes a deflection cam, which is used to be connected to the cutting device, and the deflection cam is used to drive the cutting device to move on the transverse guide.

24. The position adjustment device according to any one of claims 1 to 20, characterized in that: The transverse drive assembly includes a screw rod and a transition piece, wherein the screw rod is threadedly connected to the transition piece, and the transition piece is used to be connected to the cutting device, and the screw rod and the transition piece are used to drive the cutting device to move relative to the transverse guide piece. Alternatively, the transverse drive assembly includes a telescopic rod and an adapter, the telescopic rod is connected to the adapter, the adapter is used to be connected to the cutting device, and the telescopic rod and the adapter are used to drive the cutting device to move relative to the transverse guide member.

25. The position adjustment device according to any one of claims 1 to 20, characterized in that: After the moving action and the height adjustment action are completed and the cutting device is started, the rotation speed of the blade disc is increased to 1800-3500 rpm when the grass is not stuck.

26. The position adjustment device according to any one of claims 1 to 20, characterized in that: The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the third state, and the third state is a state for performing the height adjustment action.

27. The position adjustment device according to any one of claims 1 to 20, characterized in that: In the second state, the rotation speed of the cutter disc is 0.

28. The position adjustment device according to claim 26, characterized in that: In the third state, the rotation speed of the cutter disc is 0.

29. The position adjustment device according to claim 26, characterized in that: The rotation speed of the cutter disc in the second state is equal to the rotation speed of the cutter disc in the third state.

30. A cutting system for a lawn mower, characterized in that: The cutting system comprises: Cutting device and position adjustment device; The cutting device comprises a driver and a cutter disc, wherein the cutter disc is connected to an output end of the driver, the driver is used to drive the cutter disc to rotate, and the cutter disc is used to cut grass; The driver is connected to the position adjustment device, and the position adjustment device is used to drive the driver to perform a lateral movement action so that the cutting device moves between a center position and a side cutting position, and the position adjustment device is used to drive the driver to perform a height adjustment action to adjust the height of the cutting device above the ground. In the fourth state, the rotation speed of the blade disc is greater than or equal to the rotation speed of the blade disc in the fifth state. The fourth state is a state after the lateral movement action is completed and the driver is started. The fifth state is a state in which the driver performs a lateral movement action, and the blade disc is used for mowing.

31. The cutting system according to claim 30, characterized in that The rotation speed of the cutter disc in the fourth state is greater than or equal to the rotation speed of the cutter disc in the sixth state, and the sixth state is a state in which the driver performs a height adjustment action.

32. The cutting system according to claim 30, characterized in that In the fifth state, the rotation speed of the cutter disc is 0.

33. The cutting system according to claim 31, characterized in that In the sixth state, the rotation speed of the cutter disc is 0.

34. The cutting system according to claim 31, characterized in that The rotation speed of the cutter disc in the fifth state is equal to the rotation speed of the cutter disc in the sixth state.

35. The cutting system of claim 30, wherein: The cutting device also includes a blade cover, which is connected to the drive. In the vertical direction, the blade is arranged below the blade cover. The blade cover includes two flanges, each flange has a second lower edge, and the two flanges are arranged at intervals along the lateral direction of the lawn mower, and the blade is arranged between the two flanges.

36. The cutting system according to claim 35, characterized in that The cutter disc cover has a bottom opening, and the bottom opening is used to avoid the cutter disc. The size of the bottom opening is larger than the diameter of the cutter disc.

37. The cutting system according to claim 35, characterized in that The blade cover has a second lower edge, the blade includes a blade, and along the vertical direction, the minimum vertical distance between the lower surface of the blade and the second lower edge of the blade cover is greater than or equal to 3 mm.

38. The cutting system of claim 35, wherein: The blade cover has a second lower edge, the blade includes a blade, and along the vertical direction, the maximum vertical distance between the lower surface of the blade and the second lower edge of the blade cover is less than or equal to 15 mm.

39. The cutting system of claim 35, wherein: The position adjustment device includes a height adjustment component and a transverse driving component. The driver is slidably connected to the height adjustment component. The height adjustment component is used to drive the cutting device to move vertically, and the transverse driving component is used to drive the driver to move transversely.

40. The cutting system of claim 39, wherein: The height adjustment assembly includes a support arm, a drive unit, a support, and a transverse guide member. The support arm is rotatably connected to the support, and the transverse guide member is connected to the support arm. The drive unit is used to drive the support arm to rotate relative to the support to adjust the height of the transverse guide member. The transverse guide member is used to connect with the cutting device to enable the cutting device to move in the length direction of the transverse guide member.

41. The cutting system according to claim 40, characterized in that The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

42. The cutting system of claim 40, wherein: The support arm is rotatably connected to the support via a horizontal axis. The support arm comprises a first connection portion. There is a distance between the first connection portion and the horizontal axis. The transverse guide is connected to the first connection portion.

43. The cutting system according to claim 42, characterized in that The support arm includes a second connection portion, a distance is provided between the second connection portion and the horizontal axis, the driving unit is connected to the second connection portion, and the first connection portion is located on a side of the second connection portion away from the horizontal axis.

44. The cutting system of claim 40, wherein: An accommodating portion is formed between the support arm and the transverse guide member, and the driver passes through the accommodating portion.

45. The cutting system of claim 40, wherein: The support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side. The first sub-support arm is rotatably connected to the support, and the transverse guide is rotatably connected to the second sub-support arm.

46. ​​The cutting system of claim 45, wherein: The number of the first sub-support arms is two. The two first sub-support arms are spaced apart along the length direction of the transverse guide member, and a part of the driving unit is located between the two first sub-support arms.

47. The cutting system of claim 45, wherein: There are two second sub-support arms, and the two second sub-support arms are spaced apart along the length direction of the transverse guide member, and a receiving portion is formed between the two second sub-support arms. The driver is passed through the two second sub-support arms, and the transverse guide member is rotatably connected to the two second sub-support arms.

48. The cutting system of claim 45, wherein: There are two supports and two first sub-support arms. The two supports are spaced apart along the length direction of the transverse guide member. The two first sub-support arms are rotatably connected to the two supports respectively, and a part of the driving unit is located between the two supports.

49. The cutting system of claim 40, wherein: The driving unit includes a cam, the cam includes a helical surface, and the support arm abuts against the helical surface.

50. The cutting system of claim 49, wherein: The number of the support arms is two, the two support arms are spaced apart along the vertical direction, the two support arms are relatively fixed, and the upper support arm abuts against the spiral surface.

51. The cutting system of claim 40, wherein: The number of the support arms and the transverse guide members are both two, the two support arms are spaced apart along the vertical direction, one end of the two support arms are rotatably connected to the support, the other ends of the two support arms are rotatably connected to the corresponding transverse guide members, and the two support arms are relatively fixed; and / or, the two transverse guide members are relatively fixed, the cutting device is connected to at least one of the transverse guide members, and at least one of the support arms is connected to the driving unit.

52. The cutting system of claim 40, wherein: The transverse guide member is a circular shaft, the driver comprises a shaft hole, and the transverse guide member is passed through the shaft hole.

53. The cutting system of claim 40, wherein: The cutting device further comprises a sliding connection member connected to the driver, and the sliding connection member can be slidably connected to the transverse guide member.

54. The cutting system of claim 53, wherein: The driver comprises a housing, and the sliding connection member is integrally formed with the housing.

55. The cutting system of claim 53, wherein: The number of the sliding connection members is two, and the two sliding connection members are arranged at intervals in the lateral direction of the lawn mower.

56. The cutting system of claim 40, wherein: The transverse drive assembly includes a deflection cam connected to the cutting device, and the deflection cam is used to drive the cutting device to slide on the transverse guide.

57. The cutting system of claim 56, wherein: The cutting device comprises a receiving groove, at least a part of the deflection cam is arranged in the receiving groove, and the outer peripheral surface of the deflection cam contacts the side surface of the receiving groove.

58. The cutting system of claim 57, wherein: The deflection cam is slidably connected to the cutting device.

59. The cutting system of claim 40, wherein: The transverse drive assembly includes a screw rod and a conversion member, the screw rod is threadedly connected to the conversion member, the conversion member is connected to the cutting device, and the screw rod and the conversion member are used to drive the cutting device to move relative to the transverse guide member.

60. The cutting system of claim 59, wherein: The adapter can be slidably connected to the cutting device.

61. The cutting system of claim 59, wherein: The cutting device comprises a receiving groove, at least a part of the adapter is arranged in the receiving groove, and the adapter contacts the side surface of the receiving groove.

62. The cutting system according to claim 61, characterized in that The adapter includes a main body and a wing plate, wherein the wing plate is connected to the main body, the wing plate is threadedly connected to the screw rod, at least a portion of the wing plate is disposed in the receiving groove, and the wing plate contacts the side surface of the receiving groove.

63. The cutting system of claim 61, wherein: The cutting device further comprises two sliding connectors, which are arranged at intervals along the lateral direction of the lawn mower. The sliding connectors can be slidably connected to the lateral guide member, and the accommodating groove is formed between the two sliding connectors.

64. The cutting system of claim 40, wherein: The transverse driving assembly includes a telescopic rod and a conversion member, the telescopic rod is connected to the conversion member, the conversion member is connected to the cutting device, and the telescopic rod and the conversion member are used to drive the cutting device to move relative to the transverse guide member.

65. A cutting system for a lawn mower, characterized in that: The cutting system comprises: Cutting device and position adjustment device; The cutting device comprises a driver and a cutter disc, wherein the cutter disc is connected to an output end of the driver, the driver is used to drive the cutter disc to rotate, and the cutter disc is used to cut grass; The driver is connected to the position adjustment device, and the position adjustment device is used to drive the driver to perform a lateral movement so that the cutting device moves between a center position and a side cutting position, and the position adjustment device is used to drive the driver to perform a height adjustment action to adjust the height of the cutting device above the ground.

66. A lawn mower, characterized in that: Comprising a position adjustment device as claimed in any one of claims 1 to 29.

67. A lawn mower, characterized in that: include: body; Position adjustment device; Used to adjust the position of a cutting device of a lawn mower, the position adjusting device comprising: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one, the at least two support arms are arranged at intervals in the vertical direction, each of the support arms includes two sub-support arms, along the length direction of the transverse guide member, the two sub-support arms of each support arm are arranged at intervals to form a housing, one end of each sub-support arm is rotatably connected to the support, and the other end of each sub-support arm is rotatably connected to the end of the corresponding transverse guide member, the length direction of the transverse guide member and the forward direction of the lawn mower have an angle α, and the angle α is greater than 0 degrees and less than 180 degrees, The upper sub-support arm is relatively fixed to the lower sub-support arm, and / or the at least two transverse guide members are relatively fixed. The cutting device is connected to at least one of the transverse guide members, and the cutting device includes a cutter disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the transverse guide member. The drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground.

68. The lawn mower according to claim 67, characterized in that At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

69. A lawn mower, characterized in that: include: body; Position adjustment device; Used to adjust the position of a cutting device of a lawn mower, the position adjusting device comprising: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one, the at least two support arms are arranged at intervals in the vertical direction, each of the support arms includes a transverse connecting arm and two sub-support arms, each of the two sub-support arms includes a first sub-support arm and a second sub-support arm, the first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side, the ends of the first sub-support arm of each support arm are rotatably connected to the support, the ends of the transverse guide members are rotatably connected to the ends of the second sub-support arms of the corresponding support arms, the length direction of the transverse guide member and the forward direction of the lawn mower have an angle α, and the angle α is greater than 0 degrees and less than 180 degrees, The at least two support arms are relatively fixed; and / or the at least two transverse guide members are relatively fixed, The cutting device is connected to at least one of the transverse guides, the cutting device comprises a cutter disc, the transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the transverse guide, and the drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device relative to the ground; In each of the support arms, the number of the first sub-support arms is two, and along the length direction of the transverse guide member, the two first sub-support arms are arranged at intervals; In each of the support arms, the number of the second sub-support arms is two, and along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals, and a receiving portion is formed between the two second sub-support arms.

70. The lawn mower according to claim 69, characterized in that The transverse connecting arm of at least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

71. A lawn mower, characterized in that: include: body; Position adjustment device; Used to adjust the position of a cutting device of a lawn mower, the position adjusting device comprising: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one, the at least two support arms are arranged at intervals in the vertical direction, each of the support arms includes two sub-support arms, along the length direction of the transverse guide member, the two sub-support arms of each support arm are arranged at intervals to form a receiving portion, one end of each sub-support arm is rotatably connected to the support, and the other end of each sub-support arm is rotatably connected to the end of the corresponding transverse guide member, the length direction of the transverse guide member and the forward direction of the lawn mower have an angle α, and the angle α is greater than 0 degrees and less than 180 degrees, The upper sub-support arm is relatively fixed to the lower sub-support arm, and / or the at least two transverse guide members are relatively fixed. The two sub-support arms located at the top are connected by a transverse connecting arm, the cutting device is connected to at least one of the transverse guide members, the cutting device includes a cutter disc, the transverse driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide member, and the driving unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground.

72. The lawn mower according to claim 71, characterized in that The transverse connecting arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

73. A lawn mower according to any one of claims 67 to 72, characterized in that The cutting device includes a cutter disc, and the cutter disc includes a blade. The transverse guide member includes a first end and a second end along the length direction. The cutting device moves between the first end and the second end. When the cutting device is located at the first end, at least part of the blade is located outside the positive projection of the fuselage toward the ground.

74. The lawn mower according to claim 73, characterized in that The first end of the transverse guide extends out of the orthographic projection of the fuselage toward the ground.

75. A lawn mower according to any one of claims 67 to 72, characterized in that The cutting device includes a cutter disc, and the cutter disc includes a blade. The transverse guide member includes a first end and a second end along the length direction. The cutting device moves between the first end and the second end. The first end and the second end are located within the orthographic projection of the fuselage. The first end is close to the side edge of the orthographic projection of the fuselage. When the cutting device is located at the first end, the orthographic projection of the blade toward the ground is located within the orthographic projection of the fuselage toward the ground. The minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage is greater than or equal to 0 mm and less than or equal to 50 mm.

76. A lawn mower according to any one of claims 67 to 72, characterized in that The cutting device comprises a knife disc, the knife disc comprises a blade, the transverse guide comprises a first end and a second end along the length direction, the cutting device moves between the first end and the second end, the first end and the second end are located within the orthographic projection of the fuselage, the first end is close to the side edge of the orthographic projection of the fuselage, and when the cutting device is located at the first end, the orthographic projection of the blade facing the ground is located within the orthographic projection of the fuselage facing the ground; The length of the transverse guide is S, the width of the fuselage is W, 0.3W≤S*sinα≤0.7W, and the vertical distance between the end of the transverse guide and the symmetry plane of the fuselage is less than or equal to 0.35W.

77. A lawn mower according to any one of claims 67 to 72, characterized in that The angle α is between 85 degrees and 95 degrees.

78. The lawn mower according to claim 77, characterized in that The angle α is 90 degrees.

79. A lawn mower according to any one of claims 67 to 72, characterized in that The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state where the moving action is completed and the cutting device is started, and the second state is a state where the moving action is executed.

80. The lawn mower according to claim 79, characterized in that The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the third state, and the third state is a state for performing the height adjustment action.

81. The lawn mower according to claim 80, characterized in that In the second state, the rotation speed of the cutter disc is 0.

82. The lawn mower according to claim 80, characterized in that In the third state, the rotation speed of the cutter disc is 0.

83. The lawn mower according to claim 80, characterized in that The rotation speed of the cutter disc in the second state is equal to the rotation speed of the cutter disc in the third state.

84. A lawn mower, characterized in that: Comprising a cutting system as claimed in any one of claims 30 to 65.

85. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; A cutting system is arranged on the fuselage, the cutting system comprises a cutting device and a position adjusting device, the cutting device is connected to the position adjusting device, the position adjusting device is used to drive the cutting device to move laterally so that the cutting device moves between the center position of the fuselage and the side cutting position of the fuselage, and the position adjusting device is used to adjust the height of the cutting device above the ground; The cutting device includes a blade disc and a blade disc cover, the blade disc is located in the blade disc cover, the blade disc includes a blade, and the blade disc cover has a second lower edge. When the cutting device is located in the edge cutting position, along the vertical direction, the second lower edge is lower than the first lower edge, the vertical distance between the first lower edge and the second lower edge is greater than or equal to 1 mm and less than or equal to 20 mm, and the second lower edge is lower than the lower surface of the blade, and the blade is used for mowing grass.

86. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; A cutting system is arranged on the fuselage, the cutting system comprises a cutting device and a position adjusting device, the cutting device is connected to the position adjusting device, the position adjusting device is used to drive the cutting device to move laterally so that the cutting device moves between the center position of the fuselage and the side cutting position of the fuselage, and the position adjusting device is used to adjust the height of the cutting device above the ground; The cutting device includes a blade disc and a blade disc cover, the blade disc is located in the blade disc cover, the blade disc includes a blade, and the blade disc cover has a second lower edge. When the cutting device is located in the edge cutting position, along the vertical direction, the second lower edge is lower than the first lower edge, the vertical distance between the first lower edge and the second lower edge is greater than or equal to 5 mm and less than or equal to 15 mm, and the second lower edge is lower than the lower surface of the blade, and the blade is used for mowing grass.

87. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; A cutting system is arranged on the fuselage, the cutting system comprises a cutting device and a position adjustment device, the cutting device is connected to the position adjustment device, the position adjustment device is used to drive the cutting device to move laterally so that the cutting device moves between the center position of the fuselage and the side cutting position of the fuselage, and the position adjustment device is used to drive the cutting device to move vertically in the vertical direction; The cutting device includes a blade disc and a blade disc cover, the blade disc is located in the blade disc cover, the blade disc includes a blade, and the blade disc cover has a second lower edge. When the cutting device is located in the edge cutting position, along the vertical direction, the second lower edge is lower than the first lower edge, the vertical distance between the first lower edge and the second lower edge is 10 mm, and the second lower edge is lower than the lower surface of the blade, and the blade is used for mowing grass.

88. A lawn mower according to any one of claims 85 to 87, characterized in that The position adjustment device includes a lateral drive component, and the lateral drive component includes a deflection cam. The deflection cam is connected to the cutting device, and the deflection cam is used to drive the cutting device to move laterally. The deflection cam includes a first limiting portion, and the body includes a second limiting portion and a third limiting portion. When the cutting device is located at the center position, the first limiting portion cooperates with the second limiting portion, and when the cutting device is located at the edge cutting position, the first limiting portion cooperates with the third limiting portion.

89. A lawn mower according to any one of claims 85 to 87, characterized in that The fuselage includes a side skirt panel. When the cutting device is in the edge cutting position, the minimum horizontal distance between the outer edge of the blade and the side skirt panel along a direction perpendicular to the side skirt panel is greater than or equal to 10 mm and less than or equal to 50 mm.

90. The lawn mower according to any one of claims 85 to 87, characterized in that The fuselage includes a side skirt plate, and when the cutting device is at the center position, the minimum horizontal distance between the outer edge of the blade and the side skirt plate along the direction perpendicular to the side skirt plate is D; When the cutting device is in the edge cutting position of the fuselage, the minimum horizontal distance between the outer edge of the blade and the side skirt along the direction perpendicular to the side skirt is d; The value of D is greater than the value of d.

91. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; A cutting system is arranged on the fuselage. Along the vertical direction, the orthographic projection of the cutting system is located within the orthographic projection of the fuselage. The cutting system includes a cutting device and a position adjustment device. The cutting device is connected to the position adjustment device. The position adjustment device is used to drive the cutting device to move laterally so that the cutting device moves between the center position of the fuselage and the side cutting position of the fuselage. The position adjustment device is used to adjust the height of the cutting device. The cutting device includes a cutting piece, and the cutting piece is used to cut grass.

Images