Position adjusting device and mower

Abstract

The embodiment of the utility model provides a position adjusting device and a mower. The position adjusting device comprises a supporting arm and a transverse guiding piece. One end of the supporting arm is connected with the transverse guiding piece, the cutting device is connected to the transverse guiding piece and comprises a cutter head, the cutting device moves in the length direction of the transverse guiding piece under the action of driving force, and the rotating speed of the cutter head in the first state is larger than or equal to the rotating speed of the cutter head in the second state. The first state is a state in which the cutting device is started after the movement action is executed, and the second state is a state in which the movement action is executed.

Description

[0001] This application claims priority to the Chinese patent applications filed with the China Patent Office on April 9, 2024, with application number 202420724270.6 and application name “Lawn Mower” and application number 202410424006.5 and application name “Lawn Mower”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the technical field of lawn mowing equipment, and in particular to a position adjustment device and a lawn mower. Background Art

[0003] Lawns are usually set up in some areas where people live to improve the beauty and comfort of the environment. Lawns need to be cut and maintained periodically to keep the height of the lawn from being too high. At present, lawn mowers are usually used to cut and trim lawns. Lawn mowers can be self-moving devices. In the case of no one operating, the lawn mower can automatically complete the cutting and trimming of the lawn. However, in the prior art, the blade of the lawn mower is set at the center of the lawn mower. For general lawns, the mowing area of ​​the lawn mower is determined by the route of the lawn mower, and the blade cannot adjust the mowing position by itself, resulting in limited mowing efficiency. For lawns with physical fences set up on the periphery, when the lawn mower walks close to the physical fence, the blade cannot cut part of the lawn between the blade and the physical fence, resulting in a large area of ​​lawn remaining near the physical fence, requiring manual secondary trimming. For open lawns, when the lawn mower walks close to the lawn boundary, the blade cannot cut part of the lawn between the blade and the lawn boundary, resulting in a large area of ​​lawn remaining near the boundary, requiring manual secondary trimming. Utility Model Content

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

[0005] In a first aspect, an embodiment 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 a support arm and a transverse guide member.

[0006] One end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device includes a cutter disc. The cutting device performs a moving action along the length direction of the transverse guide under the action of the driving force. 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 after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed.

[0007] 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 transverse guide member in the position adjustment device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide member, the cutting device moves in the length direction of the transverse guide member to adjust the position of the cutting device. By using the above position adjustment device, the lawn mower can obtain a larger mowing range, thereby improving the working efficiency of the lawn mower.

[0008] When the rotation speed of the blade disc in the first state is greater than the rotation speed of the blade disc in the second state, the rotation speed of the blade disc when the cutting device is performing the moving 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 on the movement of the cutting device can be reduced, the shaking of the cutting device during the movement process can be effectively reduced, and the stability of the cutting device during the movement process can be improved; on the other hand, the resistance encountered by the cutting device during the movement process can be reduced, saving energy consumption; on the other hand, the moving 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 rotates, the louder 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.

[0009] When the rotation speed of the blade disc in the first state is equal to the rotation speed of the blade disc in the second state, when the cutting device is moving, the rotation speed of the blade disc is consistent with the rotation speed of the blade disc when it is mowing the lawn. On the one hand, the speed-up and speed-down actions of the cutting device can be reduced, and the speed of position adjustment 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 cutting device are reduced, which can reduce the load on the cutting device motor and increase the service life of the motor.

[0010] In some feasible embodiments, the position adjustment device also includes a driving unit, which is used to drive the support arm to move to perform a height adjustment action and adjust the height of the cutting device above 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 third state. The third state is a state for performing a height adjustment action.

[0011] When the rotation speed of the blade disc in the first state is greater than the rotation speed of the blade disc in the third state, the rotation speed of the blade disc when the cutting device is performing the height adjustment action is less than the rotation speed of the blade disc when the cutting device is working. On the one hand, it can reduce the interference of the high-speed rotation of the blade disc on the movement of the cutting device, effectively reduce the shaking of the cutting device during the movement, and improve the stability of the cutting device during the movement; on the other hand, it can reduce the resistance encountered during the movement of the cutting device and save energy. When the rotation speed of the blade disc in the first state is equal to the rotation speed of the blade disc in the third state, when the cutting device is performing the height adjustment action, the rotation speed of the blade disc is consistent with the rotation speed of the blade disc when the cutting device is performing the mowing work. On the one hand, it can reduce the speed-up and speed-down actions of the cutting device, increase the speed of the position adjustment of the cutting device, and thus improve the working efficiency of the lawn mower; on the other hand, the speed-up and speed-down actions of the cutting device are reduced, which can reduce the load of the cutting device motor and increase the service life of the motor.

[0012] In some achievable embodiments, the state of executing the moving action is the second state, and the rotation speed of the cutter disc is 0 in the second state.

[0013] When the cutting device is adjusting its position, the blade stops rotating, which can minimize the shaking of the cutting device during the adjustment and ensure the stability of the cutting device during movement. At the same time, when the blade speed is 0, the blade will not make any noise due to rotation. When people or animals need to be driven away, the blade will not block any alarm sound, ensuring that the alarm sound is transmitted to people or animals and ensuring the smooth driving away of people or animals.

[0014] In some achievable embodiments, the state in which the height adjustment action is performed is the third state, and the rotation speed of the cutter disc is 0 in the third state.

[0015] When the cutting device is adjusting its position, the blade stops rotating, which can minimize the shaking of the cutting device during the adjustment and ensure the stability of the cutting device during movement. At the same time, when the blade speed is 0, the blade will not make any noise due to rotation. When people or animals need to be driven away, the blade will not block any alarm sound, ensuring that the alarm sound is transmitted to people or animals and ensuring the smooth driving away of people or animals.

[0016] In some achievable embodiments, the rotation speed of the impeller in the second state is equal to the rotation speed of the impeller in the third state.

[0017] The rotation speed of the blade disc in the second state is equal to the rotation speed of the blade disc in the third state. If the cutting device is continuously performing moving actions and height adjustment actions, there is no need to adjust the rotation speed of the blade disc after the previous action is completed and before entering the next action, which improves the position adjustment rate and thereby improves the working efficiency of the lawn mower.

[0018] In some achievable embodiments, 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.

[0019] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0020] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0021] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0022] A second aspect of the embodiment 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 a support arm, a transverse guide member, and a drive unit.

[0023] One end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device moves along the length direction of the transverse guide under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. After the movement 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 in a state where the grass is not stuck. The blade disc is used for mowing.

[0024] 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 transverse guide member in the position adjustment device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide member, the cutting device moves in the length direction of the transverse guide member to adjust the position of the cutting device. By using the above position adjustment device, the lawn mower can obtain a larger mowing range, thereby improving the working efficiency of the lawn mower.

[0025] In the embodiment of the present application, after the movement and height adjustment actions are completed and the cutting device is started, the rotation speed of the cutter disc cannot be lower than 1800 rpm. Otherwise, the force on the vegetation when it contacts the blade is too small, and the vegetation cannot be cut smoothly. It is easy to get stuck in the grass, and even the cutter disc stops rotating due to the grass jam, which may also cause missed cutting. The resistance of the grass to the cutter disc will also be greater, resulting in stalling. When the cutter disc rotation speed is between 1800 rpm and 3500 rpm, it is an ideal cutting state. If the cutter disc rotation speed is increased, it will basically maintain near the corresponding cutting efficiency. Even too fast a rotation speed cannot form sufficient contact with the grass surface, and the cutting effect will be slightly worse. At the same time, the rotation speed during cutting cannot be greater than 3500 rpm. If it is higher than this speed, the cutter disc will rotate too fast, causing greater noise, more unnecessary energy consumption, and the safety factor will decrease, and the risk factor will increase. Therefore, the cutter disc rotation speed is maintained at 1800-3500 rpm, which is an ideal cutting state. The rotation speed of the cutter disc will also affect the life of the blade. Before the rotation speed of the cutter disc is 1800 rpm, it is basically in a non-cutting state, and the blade can maintain a basically stable service life. When the rotation speed of the cutter disc reaches 1800 rpm, it enters the working state of cutting vegetation, and the service life of the blade begins to decrease. When the rotation speed of the cutter disc exceeds 1800 rpm, the service life of the blade decreases significantly. The rotation speed is too fast, which easily forms negative pressure, and foreign particles other than vegetation (such as pebbles, etc.) will be sucked into the blade of the cutter disc, causing damage to the blade edge, thus affecting the service life of the cutter head. Therefore, maintaining the rotation speed of the cutter disc at 1800-3500 rpm is an ideal cutting state, and the service life of the cutter head is also maintained below a normal wear expectation.

[0026] In some achievable embodiments, 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.

[0027] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0028] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0029] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0030] A third aspect of the embodiment 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 a support arm, a transverse guide member, and a drive unit.

[0031] One end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device moves along the length direction of the transverse guide under the action of the driving force. The driving unit is used to drive the support arm to move so as to perform a height adjustment action to adjust the height of the cutting device relative to the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees. Along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end. The cutting device is used for mowing.

[0032] 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 transverse guide member in the position adjustment device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide member, the cutting device moves in the length direction of the transverse guide member to adjust the position of the cutting device. By using the above position adjustment device, the lawn mower can obtain a larger mowing range, thereby improving the working efficiency of the lawn mower.

[0033] In the mowing state, when the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut hard grass, and the lawn mower cannot work normally. When the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the operation of the lawn mower is not affected. Along the forward direction of the lawn mower, the front end of the cutting surface is lower than the rear end. Under the dual effects of the forward movement of the fuselage and the rotation of the blade, the cutting force of the cutting device is greater, and it is easier to cut the grass.

[0034] A fourth aspect 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 a support arm, a support, a drive unit, and a transverse guide member.

[0035] One end of the support arm is rotatably connected to the support. The other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device includes a cutter disc. The cutting device moves along the length direction of the transverse guide under the action of the driving force. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above 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 after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action. The cutting device is used for mowing grass.

[0036] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be slidably connected to the transverse guide 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 drive unit and a transverse guide. Under the mutual cooperation of the support arm, the support, the drive unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, when the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide, the cutting device slides relative to the transverse guide so that the cutting device moves in the length direction of the transverse guide. For example, the cutting device can be pushed to slide relative to the transverse guide manually. Alternatively, the cutting device can be pushed to slide relative to the transverse guide by setting a transverse drive assembly to achieve automatic adjustment of the position of the cutting device.

[0037] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0038] The position adjustment device can be used to adjust the height and horizontal direction of the cutting device. Based on this, when the motion direction and motion path of the lawn mower remain unchanged, the position adjustment device can be used to enable the lawn mower to obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0039] When mowing, when the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut hard grass, and the lawn mower cannot work normally. When the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the work of the lawn mower is not affected.

[0040] In some achievable embodiments, 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.

[0041] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0042] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0043] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0044] A fifth 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 a support arm, a support, a drive unit, a transverse guide member, and a transverse drive assembly.

[0045] One end of the support arm is rotatably connected to the support. The other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. 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 in the length direction of the transverse guide. The drive unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above 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 after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action. The cutting device is used for mowing grass.

[0046] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be slidably connected to the transverse guide 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 drive unit and a transverse guide. Under the mutual cooperation of the support arm, the support, the drive unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse drive assembly drives the cutting device to move along the transverse guide so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing the automatic adjustment of the position of the cutting device and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0047] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0048] The position adjustment device can be used to adjust the height and horizontal direction of the cutting device. Based on this, when the motion direction and motion path of the lawn mower remain unchanged, the position adjustment device can be used to enable the lawn mower to obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0049] When mowing, when the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut hard grass, and the lawn mower cannot work normally. When the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the work of the lawn mower is not affected.

[0050] In some achievable embodiments, 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 end of the first sub-support arm is rotatably connected to the support. The transverse guide is rotatably connected to the end of the second sub-support arm. The transverse connecting arm is connected to the driving unit.

[0051] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support, while the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is conducive to improving the overall compactness of the support arm and taking up less space.

[0052] In some achievable embodiments, 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.

[0053] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0054] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0055] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0056] A sixth aspect of the embodiments of the present application provides a position adjustment device for adjusting the cutting position of a lawn mower. The position adjustment device includes at least two support arms, at least two transverse guide members, a support, a drive unit, and a transverse drive assembly.

[0057] The number of transverse guides is consistent with the number of support arms and corresponds one to one. At least two support arms are arranged at intervals in the vertical direction. One end of at least two support arms can be rotatably connected to the support respectively. The other end of at least two support arms can be rotatably connected to the corresponding transverse guide. At least two support arms are relatively fixed; and / or, at least two transverse guides are relatively fixed. The cutting device is connected to at least one transverse guide. 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 in the length direction of the transverse 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 height of the cutting device above 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 after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action. The cutting device is used for mowing.

[0058] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be slidably connected to the transverse guide 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 drive unit and a transverse guide. Under the mutual cooperation of the support arm, the support, the drive unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse drive assembly drives the cutting device to move along the transverse guide so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing the automatic adjustment of the position of the cutting device and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0059] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0060] A connecting rod structure relationship can be formed between the support, the support arm and the transverse guide member, which is conducive to further improving the connection stability between the support, the support arm and the transverse guide member and the position stability of the cutting device during the rotation process relative to the support arm.

[0061] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0062] The position adjustment device can be used to adjust the height and horizontal direction of the cutting device. Based on this, when the motion direction and motion path of the lawn mower remain unchanged, the position adjustment device can be used to enable the lawn mower to obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0063] In some achievable embodiments, at least one of the at least two support arms 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 end of the first sub-support arm is rotatably connected to the support, the transverse guide member is rotatably connected to the end of the second sub-support arm, and the transverse connecting arm is connected to the driving unit.

[0064] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support, while the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is conducive to improving the overall compactness of the support arm and taking up less space.

[0065] In some achievable embodiments, each support arm includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group, and a first sub-support arm is arranged on one side of the transverse connecting arm group, and a second sub-support arm is arranged on the other side.

[0066] The number of the transverse connecting arms is set to at least two, which is conducive to improving the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be selected to be connected to the drive unit to improve the arrangement flexibility of the drive unit.

[0067] In some achievable embodiments, at least one support arm is connected to a drive unit; and / or the cutting device is connected to a drive unit; and / or at least one transverse guide is connected to a drive unit.

[0068] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0069] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0070] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0071] In some possible implementations, the uppermost support arm is connected to the drive unit.

[0072] The driving unit connected to one support arm can simultaneously drive each support arm to rotate synchronously relative to the support. Therefore, a connecting structure can be set between the driving unit and the uppermost support arm, which is conducive to reducing the difficulty of designing the connecting structure between the driving unit and each support arm.

[0073] In some possible implementations, at least two transverse guides are slidably connected to the cutting device, respectively.

[0074] At least two transverse guides are slidably connected to the cutting device. A connecting rod structure relationship can be formed between the support, the two support arms, the two transverse guides and the cutting device, which is conducive to further improving the connection stability between the support, the support arms, the transverse guides and the cutting device. Each transverse guide is connected to the cutting device, and the relative fixation of each transverse guide is achieved through the cutting device, eliminating the need for additional fixings for connecting each transverse guide or each support arm, saving the cost of accessories. At the same time, based on the result of the connecting rod structure relationship, it is ensured that the angle between the cutter disc and the ground remains consistent during the height adjustment of the cutting device.

[0075] In some achievable embodiments, at least two support arms are connected to each other; and / or at least two transverse guide members are connected to each other.

[0076] At least two support arms are connected to each other. The support arms are connected by an additional connecting member. A connecting rod structure relationship can be formed between the support, each support arm, each transverse guide member and the connecting member, so as to further improve the connection stability between the support, the support arm, the transverse guide member and the connecting member and the position stability of the cutting device during the rotation process relative to the support arm.

[0077] At least two transverse guides are connected to each other. The transverse guides are connected by an additional connecting member. A connecting rod structure relationship can be formed between the support, each support arm, each transverse guide and the connecting member, so as to further improve the connection stability between the support, the support arm, the transverse guide and the connecting member and the position stability of the cutting device during the rotation process relative to the support arm.

[0078] In some achievable embodiments, the support arm is rotatably connected to the support via a horizontal axis, the support arm comprises a first connection portion, and the transverse guide member is rotatably connected to the first connection portion.

[0079] The method of connecting the support arm and the support through a horizontal axis is conducive to reducing the difficulty of structural design and disassembly and assembly of the rotating pair formed between the support arm and the support, and reducing processing costs and maintenance costs.

[0080] In some achievable embodiments, the support arm includes a second connection portion, the drive unit is connected to the second connection portion, and the second connection portion is located between the first connection portion and the horizontal axis.

[0081] The second connection portion is located on a side of the horizontal axis facing the first connection portion, so that the overall structure formed by the driving unit and the support arm is more compact and occupies less space.

[0082] A seventh 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 one support arm, a support, a drive unit, a transverse guide member, and a transverse drive assembly.

[0083] 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 end of the first sub-support arm is rotatably connected to the support. The transverse guide is rotatably connected to the end of the second sub-support arm. The cutting device is connected to the transverse guide. 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 in the length direction of the transverse guide. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above 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 after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action. The cutting device is used for mowing grass.

[0084] In each support arm, the number of the first sub-support arms is two and the first sub-support arms are arranged at intervals along the length direction of the transverse guide member.

[0085] In each support arm, there are two second sub-support arms. Along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals. A receiving portion is formed between the two second sub-support arms.

[0086] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be slidably connected to the transverse guide 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 drive unit and a transverse guide. Under the mutual cooperation of the support arm, the support, the drive unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse drive assembly drives the cutting device to move along the transverse guide so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing the automatic adjustment of the position of the cutting device and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0087] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0088] The position adjustment device can be used to adjust the height and horizontal direction of the cutting device. Based on this, when the motion direction and motion path of the lawn mower remain unchanged, the position adjustment device can be used to enable the lawn mower to obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0089] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support, while the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is conducive to improving the overall compactness of the support arm and taking up less space.

[0090] When the position adjustment device is applied to a lawn mower, a part of the cutting device can be inserted into the accommodating portion to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0091] In some achievable embodiments, at least a portion of the drive unit is located between the two first sub-support arms. A portion 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 compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying less space.

[0092] In some achievable embodiments, each support arm includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group, and a first sub-support arm is arranged on one side of the transverse connecting arm group, and a second sub-support arm is arranged on the other side.

[0093] The number of the transverse connecting arms is set to at least two, which is conducive to improving the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be selected to be connected to the drive unit to improve the arrangement flexibility of the drive unit.

[0094] In some achievable embodiments, 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.

[0095] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0096] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. The driving unit does not need to exert a large force on the cutting device to complete the lifting and lowering, and the operation is convenient.

[0097] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0098] An eighth 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 transverse guide members, a support, a drive unit, and a transverse drive assembly.

[0099] The number of transverse guide members is consistent with the number of support arms and is arranged in a one-to-one correspondence. At least two support arms are arranged at intervals in the vertical direction. Each 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 ends of the first sub-support arm of each support arm are rotatably connected to the support respectively. The ends of the second sub-support arm of each support arm are rotatably connected to the corresponding transverse guide member respectively.

[0100] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0101] The cutting device is connected to at least one transverse guide. The cutting device includes a blade 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. 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 above the ground. The rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed. The cutting device is used for mowing.

[0102] When the position adjustment device of the embodiment of the present application is applied to a lawn mower, the cutting device can be slidably connected to the transverse guide 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 drive unit and a transverse guide. Under the mutual cooperation of the support arm, the support, the drive unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse drive assembly drives the cutting device to move along the transverse guide so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing the automatic adjustment of the position of the cutting device and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0103] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0104] A connecting rod structure relationship can be formed between the support, each support arm, and each transverse guide member, which is beneficial to further improve the connection stability between the support, the support arm, and the transverse guide member and the position stability of the cutting device during the rotation process relative to the support arm.

[0105] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0106] The position adjustment device can be used to adjust the height and horizontal direction of the cutting device. Based on this, when the motion direction and motion path of the lawn mower remain unchanged, the position adjustment device can be used to enable the lawn mower to obtain a larger mowing range and improve the working efficiency of the lawn mower.

[0107] In some achievable embodiments, each support arm includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group, and a first sub-support arm is arranged on one side of the transverse connecting arm group, and a second sub-support arm is arranged on the other side.

[0108] The number of the transverse connecting arms is set to at least two, which is conducive to improving the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be selected to be connected to the drive unit to improve the arrangement flexibility of the drive unit.

[0109] In some achievable embodiments, at least one support arm is connected to a drive unit; and / or the cutting device is connected to a drive unit; and / or at least one transverse guide is connected to a drive unit.

[0110] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0111] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0112] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0113] In some achievable embodiments, the transverse connecting arm of the uppermost supporting arm is connected to the driving unit.

[0114] The driving unit connected to one support arm can simultaneously drive each support arm to rotate synchronously relative to the support. Therefore, a connecting structure can be set between the driving unit and the uppermost support arm, which is conducive to reducing the difficulty of designing the connecting structure between the driving unit and each support arm.

[0115] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support, while the second sub-support arm drives the driver to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm as a force-bearing structure, which is conducive to improving the overall compactness of the support arm and taking up less space.

[0116] In some achievable embodiments, in each support arm, there are two first sub-support arms, the two first sub-support arms are spaced apart along the length direction of the transverse guide member, and a portion of the drive unit is located between the two first sub-support arms.

[0117] A portion of the driving unit may 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 compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying a small space.

[0118] In some achievable embodiments, in each support arm, the number of the second sub-support arms is two, and the two second sub-support arms are arranged at intervals along the length direction of the transverse guide member, and a receiving portion is formed between the two second sub-support arms.

[0119] When the position adjustment device is applied to a lawn mower, a part of the cutting device can be inserted into the accommodating portion to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0120] In some achievable embodiments, the number of the supports is two. The two supports are spaced apart along the length direction of the transverse guide. The number of the first sub-support arms is two. The ends of the two first sub-support arms are rotatably connected to the supports respectively. At least a part of the drive unit is located between the two supports.

[0121] At least a part of the driving unit is located between the two supports to effectively utilize the space between the two supports, which is beneficial to improving the compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying a small space.

[0122] In some achievable embodiments, the driving unit includes a cam, the cam includes a helical surface, the support arm is connected to the driving unit, and the support arm abuts against the helical surface.

[0123] The spiral surface of the cam is a continuous surface, which is beneficial to improving the movement stability of the support arm relative to the support during the swinging process and reducing the possibility of impact and setback between the support arm and the cam.

[0124] In some achievable embodiments, the driving unit includes a cam, the cam includes a helical surface, the cutting device is connected to the driving unit, and the cutting device abuts against the helical surface.

[0125] The spiral surface of the cam is a continuous surface, which is beneficial to improving the stability of the cutting device during movement and reducing the possibility of impact and setback between the cutting device and the cam.

[0126] In some achievable embodiments, the drive unit includes a cam, the cam includes a helical surface, the transverse guide is connected to the drive unit, and the transverse guide abuts against the helical surface.

[0127] The spiral surface of the cam is a continuous surface, which is beneficial to improving the stability of the movement process of the transverse guide member and reducing the possibility of impact and setback between the transverse guide member and the cam.

[0128] In some achievable embodiments, 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. The cutting device is connected to the drive unit. The cutting device abuts against the helical surface. The transverse guide is connected to the drive unit. The transverse guide abuts against the helical surface.

[0129] In some possible implementations, the transverse guide is a circular shaft, and ends of the transverse guide are connected to ends of the support arms.

[0130] The transverse guide is a circular shaft. A rotational connection can be formed between the transverse guide and the support arm, and no additional circular rotating assembly parts are required, which reduces the difficulty and cost of assembly. The end of the transverse guide is connected to the support arm. When the support arm includes two sub-support arms, the connection between the cutting device and the transverse guide remains between the two sub-support arms and does not move to the outside of the sub-support arms, avoiding the occurrence of a center of gravity shift and ensuring the stability of the overall structure.

[0131] In some achievable embodiments, the transverse drive assembly includes a deflection cam, which is used to be connected to the cutting device and to drive the cutting device to move on the transverse guide.

[0132] The deflection cam can provide a stable driving force for the cutting device to ensure that the cutting device moves stably on the transverse guide member.

[0133] In some achievable embodiments, the transverse drive assembly includes a screw and an adapter. The screw is threadedly connected to the adapter. The adapter is used to connect to the cutting device. The screw and the adapter are used to drive the cutting device to slide relative to the transverse guide.

[0134] 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 ensuring the smooth movement and displacement accuracy of the cutting device.

[0135] In some achievable embodiments, 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. The telescopic rod and the adapter are used to drive the cutting device to slide relative to the transverse guide member.

[0136] The way the telescopic rod is connected to the adapter is conducive to ensuring the smooth movement of the adapter and the displacement accuracy of the adapter, thereby ensuring the smooth movement and displacement accuracy of the cutting device.

[0137] In some achievable manners, the rotation speed of the cutter disc in the first state is greater than the rotation speed of the cutter disc in the third state. The third state is a state for performing a height adjustment action.

[0138] In some achievable embodiments, the second state is a state of executing a moving action, and the rotation speed of the cutter disc is 0 in the second state.

[0139] In some achievable embodiments, the third state is a state in which a height adjustment action is performed, and 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.

[0140] A ninth aspect of an embodiment of the present application provides a lawn mower, which includes the position adjustment device of the above embodiment.

[0141] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0142] A tenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0143] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device includes a support arm and a transverse guide. One end of the support arm is connected to the transverse guide, and the length direction of the transverse guide forms an angle α with the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide, and the cutting device includes a cutter disc. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. 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 after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed.

[0144] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0145] When the rotation speed of the cutter disc in the first state is greater than the rotation speed of the cutter disc in the second state, the rotation speed of the cutter disc when the cutting device is moving is less than the rotation speed of the cutter disc when the cutting device is working. On the one hand, it can reduce the interference of the high-speed rotation of the cutter disc on the movement of the cutting device, effectively reduce the shaking of the cutting device during the movement, and improve the stability of the cutting device during the movement; on the other hand, it can reduce the resistance encountered by the cutting device during the movement process and save energy consumption.

[0146] When the rotation speed of the blade disc in the first state is greater than the rotation speed of the blade disc in the second state, when the cutting device is moving, the rotation speed of the blade disc is consistent with the rotation speed of the blade disc when it is mowing the lawn. On the one hand, the speed-up and speed-down actions of the cutting device can be reduced, and the speed of position adjustment 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 cutting device are reduced, which can reduce the load on the cutting device motor and increase the service life of the motor.

[0147] An eleventh aspect of an embodiment of the present application provides a lawn mower, including a body and a position adjustment device.

[0148] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device comprises a support arm, a transverse guide member and a drive unit.

[0149] One end of the support arm is connected to the transverse guide member, and the cutting device is connected to the transverse guide member. There is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device moves along the length direction of the transverse guide member under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. After the movement 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. The blade disc is used for mowing.

[0150] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0151] In the embodiment of the present application, after the movement and height adjustment actions are completed and the cutting device is started, the rotation speed of the cutter disc cannot be lower than 1800 rpm. Otherwise, the force on the vegetation when it contacts the blade is too small, and the vegetation cannot be cut smoothly. It is easy to get stuck in the grass, and even the cutter disc stops rotating due to the grass jam, which may also cause missed cutting. The resistance of the grass to the cutter disc will also be greater, resulting in stalling. When the cutter disc rotation speed is between 1800 rpm and 3500 rpm, it is an ideal cutting state. If the cutter disc rotation speed is increased, it will basically maintain near the corresponding cutting efficiency. Even too fast a rotation speed cannot form sufficient contact with the grass surface, and the cutting effect will be slightly worse. At the same time, the rotation speed during cutting cannot be greater than 3500 rpm. If it is higher than this speed, the cutter disc will rotate too fast, causing greater noise, more unnecessary energy consumption, and the safety factor will decrease, and the risk factor will increase. Therefore, the cutter disc rotation speed is maintained at 1800-3500 rpm, which is an ideal cutting state. The rotation speed of the cutter disc will also affect the life of the blade. Before the rotation speed of the cutter disc is 1800 rpm, it is basically in a non-cutting state, and the blade can maintain a basically stable service life. When the rotation speed of the cutter disc reaches 1800 rpm, it enters the working state of cutting vegetation, and the service life of the blade begins to decrease. When the rotation speed of the cutter disc exceeds 1800 rpm, the service life of the blade decreases significantly. The rotation speed is too fast, which easily forms negative pressure, and foreign particles other than vegetation (such as pebbles, etc.) will be sucked into the blade of the cutter disc, causing damage to the blade edge, thus affecting the service life of the cutter head. Therefore, maintaining the rotation speed of the cutter disc at 1800-3500 rpm is an ideal cutting state, and the service life of the cutter head is also maintained below a normal wear expectation.

[0152] A twelfth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0153] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device comprises a support arm, a transverse guide member and a drive unit.

[0154] One end of the support arm is connected to the transverse guide. There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device moves along the length direction of the transverse guide under the action of the driving force. The driving unit is used to drive the support arm to move so as to perform a height adjustment action to adjust the height of the cutting device above the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees. Along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end. The cutting device is used for mowing.

[0155] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency. In the mowing state, when the angle between the cutting surface and the working surface of the cutting device is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut the hard grass, and the lawn mower cannot work normally. When the angle between the cutting surface and the working surface of the cutting device is less than 5 degrees, the cutting device can cut most of the grass, and the operation of the lawn mower is not affected.

[0156] A thirteenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0157] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device comprises a support arm, a support, a drive unit and a transverse guide.

[0158] One end of the support arm is rotatably connected to the support. The other end of the support arm is connected to the transverse guide. There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device includes a blade. The cutting device moves along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing.

[0159] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0160] There is an angle α between the length direction of the transverse guide and the forward direction of the mower. The transverse guide does not coincide with the forward direction of the mower, and the cutting device moves in the length direction of the transverse guide so that the position of the cutting device in the transverse direction of the mower changes, thereby realizing the adjustment of different cutting positions on the same path of the mower.

[0161] In some achievable embodiments, 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.

[0162] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0163] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0164] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0165] A fourteenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0166] The position adjustment device is used to adjust the position of the cutting device of the lawn mower. The position adjustment device comprises a support arm, a support, a drive unit, a transverse guide member and a transverse drive assembly.

[0167] One end of the support arm is rotatably connected to the support. The other end of the support arm is connected to the transverse guide. There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device includes a blade. 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. The drive unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing.

[0168] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0169] There is an angle α between the length direction of the transverse guide and the forward direction of the mower. The transverse guide does not coincide with the forward direction of the mower, and the cutting device moves in the length direction of the transverse guide so that the position of the cutting device in the transverse direction of the mower changes, thereby realizing the adjustment of different cutting positions on the same path of the mower.

[0170] The transverse drive assembly drives the cutting device to move along the transverse guide member, so that the cutting device moves in the length direction of the transverse guide member. The transverse drive assembly drives the cutting device to move transversely, which is conducive to realizing automatic adjustment of the position of the cutting device and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device.

[0171] In some achievable embodiments, 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.

[0172] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0173] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0174] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0175] A fifteenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0176] The position adjusting device is used for adjusting the position of the cutting device of the lawn mower, and the position adjusting device comprises at least two supporting arms, at least two transverse guide members, a support, a driving unit and a transverse driving assembly.

[0177] The number of transverse guide members is consistent with the number of support arms and corresponds to each other. At least two support arms are arranged at intervals in the vertical direction. One end of at least two support arms can be rotatably connected to the support. The other end of at least two support arms can be rotatably connected to the corresponding transverse guide member. There is an angle α between the transverse guide member and the forward direction of the lawn mower along the length direction. The angle α is greater than 0 degrees and less than 180 degrees.

[0178] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0179] The cutting device is connected to at least one transverse guide. The cutting device includes a blade 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. 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 height of the cutting device above the ground. The cutting device is used for mowing grass.

[0180] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0181] There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The transverse guide does not coincide with the forward direction of the lawn mower, and the cutting device moves in the length direction of the transverse guide, causing the cutting device to change its position in the transverse direction of the lawn mower, thereby achieving adjustment of different cutting positions on the same path of the lawn mower. The transverse drive assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing automatic adjustment of the position of the cutting device, and improving the adjustment efficiency and accuracy of the position of the cutting device.

[0182] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0183] A connecting rod structure relationship can be formed between the support, each support arm, and each transverse guide member, which is beneficial to further improve the connection stability between the support, the support arm, and the transverse guide member and the position stability of the cutting device during the rotation process relative to the support arm.

[0184] In some achievable embodiments, 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.

[0185] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0186] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0187] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0188] A sixteenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0189] The position adjustment device is used for adjusting the position of the cutting device of the lawn mower, and the position adjustment device comprises at least one supporting arm, a support, a driving unit, a transverse guide and a transverse driving assembly.

[0190] 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 end of the first sub-support arm is rotatably connected to the support. The transverse guide is rotatably connected to the end of the second sub-support arm. There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device includes a blade 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. The drive unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing.

[0191] In each support arm, there are two first sub-support arms, and along the length direction of the transverse guide member, the two first sub-support arms are arranged at intervals.

[0192] In each support arm, there are two second sub-support arms. Along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals. A receiving portion is formed between the two second sub-support arms.

[0193] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0194] There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The transverse guide does not coincide with the forward direction of the lawn mower, and the cutting device moves in the length direction of the transverse guide, causing the cutting device to change its position in the transverse direction of the lawn mower, thereby achieving adjustment of different cutting positions on the same path of the lawn mower. The transverse drive assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing automatic adjustment of the position of the cutting device, and improving the adjustment efficiency and accuracy of the position of the cutting device.

[0195] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support, while the second sub-support arm drives the driver to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is conducive to improving the overall compactness of the support arm and taking up less space.

[0196] When the position adjustment device is applied to a lawn mower, the driver of the cutting device can be inserted into the accommodating portion to effectively utilize the space between the two second sub-support arms, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0197] In some achievable embodiments, 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.

[0198] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0199] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0200] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0201] A seventeenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a position adjustment device.

[0202] The position adjusting device is used for adjusting the position of the cutting device of the lawn mower, and the position adjusting device comprises at least two supporting arms, at least two transverse guide members, a support, a driving unit and a transverse driving assembly.

[0203] The number of transverse guide members is consistent with the number of support arms and is arranged in a one-to-one correspondence. At least two support arms are arranged at intervals in the vertical direction. Each 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 ends of the first sub-support arm of each support arm are rotatably connected to the support respectively. The ends of the second sub-support arm of each support arm are rotatably connected to the corresponding transverse guide member respectively. There is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower. The angle α is greater than 0 degrees and less than 180 degrees.

[0204] At least two support arms are fixed relative to each other, and / or at least two transverse guide members are fixed relative to each other.

[0205] The cutting device is connected to at least one transverse guide. The cutting device includes a blade 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. 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 height of the cutting device above the ground. The cutting device is used for mowing grass.

[0206] 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 of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the lawn mower, and when the motion path of the lawn mower remains unchanged, the mowing range of the lawn mower is expanded, thereby improving the mowing efficiency.

[0207] There is an angle α between the length direction of the transverse guide and the forward direction of the lawn mower. The transverse guide does not coincide with the forward direction of the lawn mower, and the cutting device moves in the length direction of the transverse guide, causing the cutting device to change its position in the transverse direction of the lawn mower, thereby achieving adjustment of different cutting positions on the same path of the lawn mower. In addition, the transverse drive assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. The method of driving the cutting device to move transversely by the transverse drive assembly is conducive to realizing automatic adjustment of the position of the cutting device, thereby improving the adjustment efficiency and accuracy of the position of the cutting device.

[0208] At least two support arms are relatively fixed, and / or at least two transverse guides are relatively fixed. A connecting rod structure relationship can be formed between the support, each support arm, and each transverse guide, thereby facilitating further improving the connection stability between the support, the support arm, and the transverse guide, and the position stability of the cutting device during the rotation process relative to the support arm.

[0209] The mounting structure in which the support arm and the transverse guide are interconnected can realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower.

[0210] In some achievable embodiments, at least one support arm is connected to a drive unit; and / or the cutting device is connected to a drive unit; and / or at least one transverse guide is connected to a drive unit.

[0211] 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, thereby achieving height adjustment of the cutting device. The support arm is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0212] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and no other structure or component is required for force transmission. 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.

[0213] The transverse guide is connected to the driving unit. As an intermediate connection structure between the support arm and the cutting device, the transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without requiring too many structures and components for force transmission, thus ensuring the stability of the motion state.

[0214] In some achievable embodiments, the cutting device includes a cutter disc. 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.

[0215] When the cutting device is located at the first end, at least part of the blade is located outside the orthographic projection of the body toward the ground. The blade can be moved to the outside of the body of the lawn mower, and when working, the grass in the lawn boundary area can be cleanly cut, avoiding lawn boundary residue during the cutting process, eliminating the need for manual secondary trimming, and improving the user experience.

[0216] In some practicable embodiments, the first end of the transverse guide extends out of an orthographic projection of the fuselage toward the ground.

[0217] The first end of the transverse guide extends out of the orthographic projection of the machine body toward the ground. The transverse guide part extends out of the machine body of the lawn mower. When the lawn boundary needs to be trimmed, the cutting device moves along the transverse guide to the outside of the machine body of the lawn mower, so that the area of ​​the blade moving to the outside of the lawn mower is increased, further improving the trimming effect of the lawn boundary.

[0218] In some achievable embodiments, the cutting device includes a cutter disc. The cutter disc includes a blade. The transverse guide 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 toward the ground. The first end is close to the side edge of the orthographic projection of the fuselage toward the ground. 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.

[0219] 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 edge of the lawn cannot be cut is greater than 50 mm, it will affect the visual appearance 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, which greatly reduces the width of the uncut lawn, eliminates the need for manual secondary trimming, and improves the edge cutting effect. In addition, the blade is located inside the fuselage, and no additional protective structure is required to meet safety requirements.

[0220] In some achievable embodiments, the cutting device includes a cutter disc. The cutter disc includes a blade. The transverse guide 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 toward the ground. The first end is close to the side edge of the orthographic projection of the fuselage toward the ground. 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 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.

[0221] S*sinα is the length of the transverse 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 the lawn boundary cutting effect is not ideal, resulting in a wider lawn boundary, which affects the visual perception. 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 transverse guide will occupy more space inside the fuselage, and more space needs to be reserved inside the fuselage to avoid the cutting device, which increases the size of the fuselage, which is not conducive to the miniaturization of the lawn mower. At the same time, the excessive length of the transverse guide causes the center of gravity of the lawn mower to shift to one side of the lawn mower, resulting in a decrease in the stability of the lawn mower.

[0222] In some practicable embodiments, there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is between 85 degrees and 95 degrees.

[0223] When the length of the lateral guide member is constant and the angle α is in the range of 85 to 95 degrees, the movement range of the cutting device along the width of the fuselage is larger than when the angle α takes other values, which can effectively utilize the space inside the fuselage, improve mowing efficiency and ensure the miniaturization of the machine.

[0224] In some practicable embodiments, there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower. The angle α is 90 degrees.

[0225] When the length of the transverse guide is constant and the angle α is 90 degrees, the cutting device has the largest range of movement along the width direction of the fuselage, and can maximize the use of the space inside the fuselage to achieve the effect of cutting to the edge.

[0226] In some achievable embodiments, 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 the state after the moving action is completed and the cutting device is started, and the second state is the state of executing the moving action.

[0227] In some achievable manners, the rotation speed of the cutter disc in the first state is greater than the rotation speed of the cutter disc in the third state. The third state is a state for performing a height adjustment action.

[0228] In some achievable embodiments, the second state is a state of executing a moving action, and the rotation speed of the cutter disc is 0 in the second state.

[0229] In some achievable embodiments, the third state is a state in which a height adjustment action is performed, and 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.

[0230] An eighteenth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a cutting system.

[0231] The fuselage includes a first lower edge. The cutting system is disposed on 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 a center position of the fuselage and a side cutting position of the fuselage. And the position adjustment device is used to adjust the height of the cutting device.

[0232] The cutting device comprises a blade disc and a blade disc cover. The blade disc is located in the blade disc cover. The blade disc comprises a blade. The blade disc cover has a second lower edge. When the cutting device is located at the edge cutting position, along the vertical direction, the second lower edge is lower than the first lower edge, and the second lower edge is lower than the lower surface of the blade.

[0233] 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 of the cutting device and the body. 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 is beneficial to avoid that too large an area of ​​uncut lawn remains 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 is beneficial to improve the cutting efficiency and cutting effect.

[0234] In addition, the position adjustment device can adjust the height of the cutting device, so that when the cutting device is located at the side cutting position, the second lower edge of the blade cover can be lower than the first lower edge of the body in the vertical direction, and the second lower edge of the blade cover can be lower than the lower surface of the blade. There is a large safety distance between the second lower edge of the blade cover and the blade. When the operator is carrying the lawn mower, the operator's palm can be placed on the body, and the fingertips of the operator's fingers can be buckled inside the blade cover. Under the protective effect of the blade cover, most of the operator's fingers are located outside the blade cover, making it difficult for the operator's fingers to touch the blade. At the same time, the second lower edge of the blade cover is lower than the blade, so that when the operator's fingers bypass the second lower edge of the blade cover and buckle inside the blade cover, the fingertips of the operator's fingers are not easy to touch the blade.

[0235] In addition, the lawn mowers of the embodiments of the present application can meet the transportation safety requirements as long as the orthographic projection of the cutting system is within the orthographic projection of the fuselage. Therefore, when the cutting device is in the side cutting position, the distance between the blade disc and the fuselage can be adjusted to be very small, and the outer edge of the blade disc cover can be infinitely close to the fuselage, which greatly reduces the width of the uncut lawn and improves the side cutting effect.

[0236] Since the outer edge of the cutter head cover can be infinitely close to the fuselage, most hard impurities (such as pebbles) cannot enter between the cutter head cover and the fuselage, thus preventing the cutter head cover or the fuselage from being scratched or damaged by the hard impurities.

[0237] In addition, the lawn mower in the embodiment of the present application does not need to be equipped with a bottom protective plate at the bottom of the blade disc, thereby avoiding the blade disc from getting stuck due to pebbles or other debris getting stuck between the bottom protective plate and the blade disc during mowing, reducing the probability of the machine getting stuck while the lawn mower is cutting, and improving cutting efficiency and user experience.

[0238] Therefore, the lawn mower of 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 can adjust the position of the cutting device through the position adjustment device, so that the cutting device located at the edge cutting position can meet the safety requirements for the use of the lawn mower and will not cause injuries to people or animals.

[0239] In some achievable embodiments, 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, 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. When the cutting device is located at the side cutting position, the first limiting portion cooperates with the third limiting portion.

[0240] The first limiting part cooperates with the second limiting part and the first limiting part cooperates with the third limiting part to ensure the position accuracy of the cutting device when it moves horizontally to the center position or the edge cutting position, thereby improving the position movement accuracy.

[0241] In some achievable embodiments, the fuselage includes a side skirt panel. When the cutting device is in the side cutting position of the fuselage, the minimum horizontal distance between the outer edge of the blade and the side skirt panel of the fuselage 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.

[0242] In the edge cutting state, the minimum horizontal distance between the outer edge of the blade and the side skirt of the body is greater than or equal to 10 mm and less than or equal to 50 mm. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the body is greater than 50 mm, the width of the area on the edge of the lawn that cannot be cut will affect the visual appearance and require 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 body is less than 10 mm, when the user is carrying the mowing, the fingers are easily touched by mistake when they buckle from the lower edge of the side skirt into the body, causing injury to the user. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the body is greater than or equal to 10 mm and less than or equal to 50 mm, while meeting the safety performance, the width of the uncut lawn is greatly reduced, and no manual secondary trimming is required, which improves the edge cutting effect.

[0243] In some practicable embodiments, the fuselage includes a side skirt panel. When the cutting device is at the center of the fuselage, the minimum horizontal distance between the outer edge of the blade and the side skirt panel of the fuselage along a direction perpendicular to the side skirt panel is D.

[0244] When the cutting device is in the side cutting position of the fuselage, the minimum horizontal distance between the outer edge of the blade and the side skirt of the fuselage in the direction perpendicular to the side skirt is d. The value of D is greater than the value of d.

[0245] The lawn mower in the embodiment of the present application has two working positions. According to different usage scenarios, the cutting device can be adjusted to the center position of the body or the side cutting position of the body to meet the different mowing needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0246] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0247] Figure 1 A schematic diagram of a partial structure of a lawn mower according to an embodiment of the present application;

[0248] Figure 2 A partial side structural schematic diagram of a cutting system according to an embodiment of the present application;

[0249] Figure 3 A schematic diagram of a partial bottom view of the cutting system according to an embodiment of the present application;

[0250] Figure 4 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0251] Figure 5 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0252] Figure 6 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0253] Figure 7 It is a schematic diagram of the partial structure of a transverse drive assembly according to an embodiment of the present application;

[0254] Figure 8 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0255] Fig. 9 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0256] Fig.10 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0257] Fig.11 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0258] Fig.12 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0259] Fig.13 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0260] Fig.14 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0261] Fig.15 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0262] Fig.16 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0263] Fig.17 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0264] Fig.18 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0265] Fig.19 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0266] Fig. 20 A schematic diagram of a partial structure of a lawn mower according to an embodiment of the present application;

[0267] Fig.21 It is a schematic diagram of the partial structure of a lawn mower according to an embodiment of the present application.

[0268] Description of reference numerals:

[0269] 10. Lawn mower;

[0270] 20. Cutting system;

[0271] 30. fuselage; 31. side skirt; 311. first lower edge;

[0272] 40. cutting device; 40a. receiving groove;

[0273] 41. Driver;

[0274] 42. knife disc; 421. blade;

[0275] 43, blade cover; 43a, second lower edge; 431, flange;

[0276] 44. Sliding connector;

[0277] 50. Position adjustment device;

[0278] 60. Height adjustment assembly;

[0279] 61. Support;

[0280] 62, support arm; 62a, accommodating portion; 62b, first connecting portion; 62c, second connecting portion;

[0281] 620, sub-support arm;

[0282] 621, transverse connecting arm; 622, first sub-support arm; 623, second sub-support arm;

[0283] 63, cam; 631, helicoid;

[0284] 64, transverse guide member; 641, first end; 642, second end;

[0285] 70. Transverse drive assembly;

[0286] 71. deflection cam; 711. first limiting portion;

[0287] 72. A second driving component;

[0288] 73. Screw;

[0289] 74, adapter; 741, main body; 742, wing plate;

[0290] 75. Telescopic rod;

[0291] 80, horizontal axis;

[0292] 90. Walking device;

[0293] X, horizontal;

[0294] Y, vertical direction;

[0295] Z, forward direction. DETAILED DESCRIPTION

[0296] The lawn mower of 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 human operation. During the operation of the lawn mower, the lawn mower can move along a predetermined movement direction and movement path on the lawn. During the movement, the lawn mower can perform a mowing function to cut the lawn so that the lawn is kept at a predetermined height, avoiding the lawn from being too high or having different heights, and ensuring that the lawn maintains good aesthetics and neatness.

[0297] The lawn mower is usually placed in a predetermined area to perform lawn mowing. For example, a physical fence may be set around the lawn. For example, the physical fence may be a wire mesh or a wooden fence. The physical fence is set around the lawn along the boundary of the lawn. The lawn mower may be placed within the physical fence. The lawn mower may mow the lawn within the physical fence.

[0298] For another example, a lawn mower may be placed in an open lawn area. An open lawn area refers to a lawn area without a physical fence. In order to ensure that the lawn mower does not go out of the lawn area, the lawn mower may include a control system, and the control system may automatically set a walking route of the lawn mower according to the boundary shape of the lawn, so that the lawn mower always walks in a predetermined lawn area and mows the lawn at the same time. The lawn mower cannot go out of the boundary of the lawn.

[0299] Figure 1 The partial structure of the lawn mower is shown schematically. Figure 2 The partial side view structure of the cutting system is schematically shown. Figure 3 The schematic diagram shows the partial structure of the cutting system from above.

[0300] See also Figure 1 , Figure 2 and Figure 3 As shown, the lawn mower 10 includes a cutting system 20. The cutting system 20 includes a cutting device 40. The cutting device 40 is used for mowing. The cutting device 40 may also include a drive 41. The drive 41 is connected to the cutting member. The drive 41 is used to drive the cutting member so that the cutting member performs a mowing action to reduce the height of the lawn.

[0301] Exemplarily, the cutting member may be a blade disc 42. A driver 41 is connected to the blade disc 42. The driver 41 is used to drive the blade disc 42 to rotate. The blade disc 42 in a rotating state can cut grass to reduce the height of the lawn. The rotation axis of the blade disc 42 is a vertical axis. Alternatively, there is a small angle between the rotation axis of the blade disc 42 and the vertical direction Y. A predetermined distance is maintained between the blade disc 42 and the ground, so that the blade disc 42 can cut the lawn according to the mowing height requirement. The vertical direction Y is also used as the height direction.

[0302] The lawn mower 10 further includes a body 30 and a running device 90. The cutting device 40 may be arranged on the inner side of the body 30. For example, along the vertical direction Y, the cutting device 40 may be arranged below the body 30. Along the vertical direction Y, the orthographic projection of the cutting device 40 may be located within the orthographic projection of the body 30. The running device 90 is connected to the body 30. The running device 90 includes running wheels or tracks. The running wheels or tracks may be located outside the body 30. Along the lateral direction X of the lawn mower 10, running wheels or tracks are respectively arranged on both sides of the lawn mower 10. The lateral direction X of the lawn mower 10 is a horizontal direction perpendicular to the forward direction Z of the lawn mower 10. The lateral direction X of the lawn mower 10 is perpendicular to the vertical direction Y. It should be noted that along the lateral direction X of the lawn mower 10, the two sides of the lawn mower 10 refer to the left and right sides of the lawn mower 10.

[0303] In the related art, the blade of the lawn mower is set at the center of the lawn mower. For lawns with physical fences set around them, when the lawn mower moves close to the physical fence, the blade cannot cut the part of the lawn between the blade and the physical fence, resulting in a large area of ​​lawn remaining near the physical fence, which requires manual secondary mowing. For open lawns, when the lawn mower moves close to the lawn boundary, the blade cannot cut the part of the lawn between the blade and the lawn boundary, resulting in a large area of ​​lawn remaining near the boundary, which requires manual secondary mowing.

[0304] In order to solve the above problem, one way is that 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 of the cutting device and the machine body, so that the cutting device can move from the center position to the outer edge of the machine body to the side cutting position, or from the side cutting position to the center of the machine body to the center position. When the cutting device is in the side cutting position, the cutting device can trim the area close to the lawn boundary, which is conducive to avoiding manual secondary trimming.

[0305] However, due to the limitation of the body volume, it is difficult for a lawn mower with a lateral position adjustment device to be compatible with a height position adjustment device inside the body. The height position adjustment device is a mechanism for adjusting the height of the cutting device so that the blade disc can complete the cutting of lawns at different heights. When the lateral position adjustment device and the height position adjustment device are arranged together inside the body of the lawn mower, the problem of motion interference must also be considered. Therefore, a large internal space of the body is required to accommodate the lateral position adjustment device and the height position adjustment device. The lawn mower has the characteristics of small size and light weight, which also makes it difficult for the above two position adjustment devices to be integrated inside the lawn mower. For lawn mowers, there is currently a lack of specific means to achieve both the lateral position adjustment and the height position adjustment functions of the blade disc.

[0306] For lawn mowers whose cutting device position can be moved and adjusted or whose cutting device is located on one side of the body, when the cutting device of the lawn mower is in the side cutting position, the lawn mower needs to not harm people or animals. For example, when the cutting device is in the side cutting position, the fingers of the person cannot touch the blade when the person is carrying the lawn mower. In order 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 in the space surrounded by the side guard plates and the bottom guard plates. The side guard plates and the bottom guard plates protect the cutting device so that the fingers of the person are not easy to touch the blade, so as to ensure the safety of the use of the lawn mower. However, when the lawn mower is moving, the bottom guard plate will crush the lawn, resulting in the cutting device failing to cut the crushed lawn, affecting the cutting efficiency and cutting effect.

[0307] The lawn mower 10 of the embodiment of the present application can realize the function of lateral movement of the cutting device 40, and can also realize the function of vertical movement of the cutting device 40. The lawn mower 10 adjusts the position of the cutting device 40 laterally so that the cutting device 40 can trim a portion of the lawn near the lawn boundary. At the same time, the lawn mower 10 adjusts the position of the cutting device 40 vertically so that 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 injuries to people or animals. The lawn mower 10 does not need to be additionally provided with a bottom protective plate, which is conducive to improving cutting efficiency and cutting effect.

[0308] Figure 4 A partial structure of the cutting system 20 is schematically shown. Figure 4 In the figure, the cutting device 40 in the cutting system 20 is in the central position. Figure 5 A partial structure of the cutting system 20 is schematically shown. Figure 5 In the embodiment, the cutting device 40 in the cutting system 20 is in the side cutting position. Figures 1 to 5 The lawn mower 10 according to the embodiment of the present application is described by way of example.

[0309] See also 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 a storage space. The body 30 may protect the components disposed in the storage space. The body 30 may include side skirts 31. Along the lateral direction X of the lawn mower 10, the side skirts 31 are respectively disposed on both sides of the lawn mower 10. The side skirts 31 have a first lower edge 311. Along the vertical direction Y, the first lower edge 311 of the side skirt 31 faces the ground.

[0310] The lawn mower 10 may include a cutting system 20. The cutting system 20 is disposed on a body 30. The body 30 provides a mounting base for the cutting system 20 and carries 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 adjustment device 50. The cutting device 40 and the position adjustment device 50 are both disposed on the body 30. The cutting device 40 is connected to the position adjustment device 50. The position adjustment device 50 is used to drive the cutting device 40 to move laterally to approach or move away from the side skirt 31, and the position adjustment device 50 is used to drive the cutting device 40 to move vertically along the vertical direction Y. The position adjustment device 50 has the function of driving the cutting device 40 to move laterally and vertically.

[0311] The position adjustment device 50 can drive the cutting device 40 to move horizontally and then drive the cutting device 40 to move vertically. Alternatively, the position adjustment device 50 can drive the cutting device 40 to move vertically and then drive the cutting device 40 to move horizontally. Alternatively, the position adjustment device 50 can drive the cutting device 40 to move horizontally and vertically at the same time.

[0312] The position adjustment device 50 is used to drive the cutting device 40 to move laterally to approach or move away from the side skirt panel 31, so that the cutting device 40 moves between the center position of the fuselage 30 and the side cutting position of the fuselage 30. The position adjustment device 50 is used 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 height of the cutting device 40 above the ground.

[0313] When the cutting device 40 is at the center of the fuselage 30, the cutting device 40 is relatively far away from the side skirt panels 31 of the fuselage 30. The distance between the cutting device 40 and the side skirt panels 31 is relatively large. When the cutting device 40 is at the edge cutting position of the fuselage 30, the cutting device 40 is relatively close to the side skirt panels 31 of the fuselage 30. The distance between the cutting device 40 and the side skirt panels 31 is relatively small.

[0314] In some practicable embodiments, along the vertical direction Y, the orthographic projection of the cutting system 20 is located within the orthographic projection of the fuselage 30. When the cutting device 40 is at the edge cutting position of the fuselage 30, the cutting device 40 does not exceed the side skirt 31 of the fuselage 30 along the lateral direction X of the mower 10.

[0315] In some practicable embodiments, in an initial state, the cutting device 40 of the lawn mower 10 is located at the center of the body 30. After the lawn mower 10 is started, the cutting device 40 of the lawn mower 10 can mow most of the lawn, and only the lawn near the edge of the lawn cannot be mowed. Then, the position adjustment device 50 is started to drive the cutting device 40 to move laterally from the center position to the side cutting position, and then the lawn near the edge is mowed, thereby completing the mowing of the entire lawn.

[0316] Alternatively, in the initial state, the cutting device 40 of the lawn mower 10 is located at the edge cutting position. After the lawn mower 10 is started, the cutting device 40 of the lawn mower 10 can cut the lawn near the border. Then, the position adjustment device 50 is started to drive the cutting device 40 to move laterally from the edge cutting position to the center position, and cut the remaining majority of the lawn, thereby completing the cutting work of the entire lawn.

[0317] In some practicable embodiments, when the position adjustment device 50 drives the cutting device 40 to move, the cutting device 40 can be in a stopped working state or in a working state.

[0318] In some practicable embodiments, when the position adjustment device 50 needs to drive the cutting device 40 to move laterally from the center position to the side cutting position, the position adjustment device 50 drives the cutting device 40 to move vertically in advance to lower the height of the cutting device 40. Then, the position adjustment device 50 drives the cutting device 40 to move laterally to the side cutting position.

[0319] When the position adjustment device 50 needs to drive the cutting device 40 to move horizontally from the edge cutting position to the center position, the position adjustment device 50 drives the cutting device 40 to move horizontally to the center position in advance. Then, the position adjustment device 50 drives the cutting device 40 to move vertically to increase the height of the cutting device 40.

[0320] In some practicable embodiments, a limiting structure (not shown) is provided on the fuselage 30. When the cutting device 40 is located at the edge 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 a set range when the cutting device 40 is at the edge cutting position.

[0321] In some practicable ways, lawns in different areas have different requirements for lawn mowing heights. The position adjustment device 50 drives the cutting device 40 to move vertically along the vertical direction Y, so that the height of the cutting device 40 can be flexibly adjusted, thereby adapting to and meeting the differentiated requirements for lawn mowing heights.

[0322] See also Figures 1 to 3 As shown, the cutting device 40 of the embodiment of the present application includes a blade disc 42 and a blade disc cover 43. The blade disc 42 is arranged in the blade disc cover 43. The blade disc 42 is located below the blade disc cover 43. Exemplarily, the material of the blade disc cover 43 may be plastic. The material of the blade disc 42 may be metal. The blade disc cover 43 includes a bottom opening for avoiding the blade disc 42. The bottom opening of the blade disc cover 43 is used to avoid the blade disc 42. The size of the bottom opening is larger than the diameter of the blade disc 42. The bottom opening of the blade disc cover 43 can completely avoid the blade disc 42, so that along the vertical direction Y, the bottom of the blade disc 42 is not blocked by the blade disc cover 43. The lawn can also enter the blade disc cover 43 through the bottom opening and be cut by the blade disc 42 in the blade disc cover 43. Therefore, the blade disc cover 43 will not overwhelm the lawn, ensuring that the blade disc 42 can mow the grass smoothly, thereby improving the cutting efficiency and cutting effect.

[0323] In some achievable embodiments, the blade cover 43 has a second lower edge 43a. Along the vertical direction Y, the second lower edge 43a of the blade 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 blade 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 blade 42. When the lawn mower 10 is observed from the side along the lateral direction X of the lawn mower 10, the portion of the blade cover 43 that is not blocked by the side skirt 31 can be observed, but the blade 42 blocked by the blade cover 43 cannot be observed.

[0324] For example, when the lawn mower 10 is viewed from above, along the lateral direction X of the lawn mower 10, when the cutting device 40 is in the side cutting position, the cutting device 40 may be disposed toward the left side of the lawn mower 10. Along the vertical direction Y, the second lower edge 43a of the blade cover 43 close to the left side skirt plate 31 may be lower than the first lower edge 311 of the left side skirt plate 31.

[0325] In some achievable embodiments, along the vertical direction Y, the blade cover 43 may be entirely located outside the body 30. When the lawn mower 10 is viewed from the side, the side skirt 31 does not block the blade cover 43. Alternatively, along the vertical direction Y, a portion of the blade cover 43 may be located outside the body 30, and a portion may be located inside the body 30. When the lawn mower 10 is viewed from the side, the side skirt 31 blocks a portion of the blade cover 43.

[0326] In some possible implementations, see Figure 2 and Figure 3 As shown, the blade cover 43 may include two flanges 431. The flanges 431 may be folded toward the ground. The flanges 431 have a second lower edge 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 flange 431 on the left side is arranged corresponding to the side skirt 31 on the left side. The flange 431 on the right side is arranged corresponding to the side skirt 31 on the right side. When the cutting device 40 moves along the transverse direction X of the lawn mower 10, the flange 431 of the blade cover 43 approaches or moves away from the side skirt 31. The blade 42 is arranged in the space between the two flanges 431. Along the forward direction Z of the lawn mower 10, the blade cover 43 has a grass inlet. The lawn can enter the blade cover 43 through the grass inlet, so the blade cover 43 will not overwhelm the lawn.

[0327] In some possible implementations, see Figure 2 and Figure 4 As shown, the cutting device 40 further includes a driver 41. The driver 41 is connected to a position adjustment device 50. The blade cover 43 can be connected to the driver 41. The output shaft of the driver 41 is connected to the blade 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 blade cover 43 and the blade 42 to move horizontally or vertically synchronously.

[0328] In some examples, the driver 41 may include a housing, a motor, and a transmission mechanism. The blade cover 43 may be connected to the housing. The motor is disposed in the housing. The transmission mechanism includes an output shaft that passes through the housing. The portion of the transmission mechanism other than the output shaft is disposed in the housing. The housing may protect the motor and the transmission structure. Exemplarily, the transmission mechanism includes a gear-type speed change structure.

[0329] The lawn mower 10 of 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 of the cutting device 40 and the body 30. Under the driving action of the position adjustment device 50, the cutting device 40 can move between the center 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 close to the lawn boundary, which is beneficial to avoid that too large an area of ​​uncut lawn remains at the lawn boundary. At the same time, the lawn mower 10 protects the blade 42 through the blade cover 43, and there is no need to set up an additional bottom protective plate. The blade cover 43 of the lawn mower 10 will not overwhelm the lawn, which is beneficial to improve the cutting efficiency and cutting effect.

[0330] In addition, the position adjustment device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is located at the side cutting position, along the vertical direction Y, the second lower edge 43a of the blade cover 43 can be lower than the first lower edge 311 of the side skirt 31, and the second lower edge 43a of the blade cover 43 can be lower than the blade 42. There is a large safety distance between the second lower edge 43a of the blade cover 43 and the blade 42. When the lawn mower 10 is being carried, the palm of the operator can be placed on the side skirt 31, and the fingertips of the fingers can be buckled inside the blade cover 43. Under the protective effect of the blade cover 43, most of the operator's fingers are located outside the blade cover 43, so that the operator's fingers are not easy to touch the blade 42. At the same time, the second lower edge 43a of the blade cover 43 is lower than the blade 42, so that when the operator's fingers bypass the second lower edge 43a of the blade cover 43 and buckle inside the blade cover 43, the fingertips of the fingers are not easy to touch the blade 42.

[0331] In addition, the lawn mower 10 of the embodiment of the present application can meet the transportation safety requirements under the condition that the orthographic projection of the cutting system 20 is located within the orthographic projection of the fuselage 30. Therefore, when the cutting device 40 is in the side cutting position, the distance between the blade disc 42 and the side skirt 31 can be adjusted to be very small, and the outer edge of the blade disc cover 43 can be infinitely close to the side skirt 31, which greatly reduces the width of the uncut lawn and improves the side cutting effect.

[0332] Since the outer edge of the blade cover 43 can be infinitely close to the side skirt plate 31, most hard impurities (such as pebbles) cannot enter between the blade cover 43 and the side skirt plate 31, thus preventing the hard impurities from scratching or damaging the blade cover 43 or the side skirt plate 31.

[0333] In addition, the lawn mower 10 of the embodiment of the present application does not need to be provided with a bottom protective plate at the bottom of the blade disc 42, thereby preventing pebbles or other debris from getting stuck between the bottom protective plate and the blade disc 42 during mowing, causing the blade disc 42 to get stuck, thereby reducing the probability of the lawn mower 10 getting stuck while cutting, and improving the cutting efficiency and user experience.

[0334] Therefore, the lawn mower 10 of the embodiment of the present application can not only effectively cut the lawn near the lawn boundary and improve the cutting efficiency and cutting effect, but also can adjust the position of the cutting device 40 through the position adjustment device 50 so that the cutting device 40 located at the edge cutting position can meet the safety requirements for the use of the lawn mower 10 and will not cause injuries to people or animals.

[0335] In some possible implementations, see Figure 1 As shown, along the vertical direction Y, a vertical distance L2 between the first lower edge 311 of the side skirt plate 31 and the second lower edge 43a of the blade cover 43 is greater than or equal to 1 millimeter (mm).

[0336] In some achievable embodiments, along the vertical direction Y, a vertical distance L2 between the first lower edge 311 of the side skirt plate 31 and the second lower edge 43a of the blade cover 43 is greater than or equal to 5 mm. In some examples, along the vertical direction Y, a vertical distance L2 between the first lower edge 311 of the side skirt plate 31 and the second lower edge 43a of the blade cover 43 is 5 mm.

[0337] In some achievable embodiments, along the vertical direction Y, a vertical distance L2 between the first lower edge 311 of the side skirt plate 31 and the second lower edge 43a of the blade cover 43 is greater than or equal to 10 mm. The larger the vertical distance L2 between the first lower edge 311 of the side skirt plate 31 and the second lower edge 43a of the blade cover 43, the higher the protective performance of the side skirt plate 31 and the blade cover 43, so that the operator's fingers are less likely to contact the blade 42.

[0338] In some possible implementations, see Figure 2 and Figure 3 As shown, the cutter disc 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 disc cover 43 is in the range of greater than or equal to 3 mm. The maximum vertical distance L3 between the lower surface of the blade 421 and the second lower edge 43a of the cutter disc cover 43 is less than or equal to 15 mm. For example, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter disc cover 43 is 10 mm. The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter disc cover 43, the greater the distance between the operator's finger that is buckled into the cutter disc cover 43 and the cutter disc 42, and thus the operator's finger is less likely to contact the cutter disc 42.

[0339] In some achievable embodiments, the vertical distance between the first lower edge 311 of the side skirt panel 31 and the ground is in the range of 40 mm to 60 mm along the vertical direction Y. For example, the vertical distance between the first lower edge 311 of the side skirt panel 31 and the ground is 55 mm.

[0340] In some practicable embodiments, along the vertical direction Y, the vertical distance between the cutter head 42 and the ground ranges from 30 mm to 40 mm.

[0341] See also 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 disposed 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.

[0342] 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.

[0343] 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 via a support 61. The support arm 62 is rotatably connected to the support 61. The way in which the support arm 62 is connected to the fuselage 30 via the support 61 is conducive to reducing the difficulty of connecting 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 via a horizontal axis 80. The height adjustment assembly 60 may drive the support arm 62 to swing around the horizontal axis 80. The horizontal axis 80 is the fulcrum of the support arm 62. The way in which the support arm 62 and the support 61 are connected via the horizontal axis 80 is conducive to reducing the difficulty of structural design and disassembly and assembly of the rotating pair formed between the support arm 62 and the support 61, and reducing the processing cost and maintenance cost.

[0344] 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. The 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. The additionally provided horizontal shaft 80 is inserted into the shaft holes on the support arm 62 and the support 61.

[0345] The cutting device 40 is connected to the support arm 62. The support arm 62 includes a first connection portion 62b. There is a distance between the first connection portion 62b of the support arm 62 and the horizontal axis 80. The cutting device 40 is connected to the first connection portion 62b of the support arm 62. There is a distance between the cutting device 40 and the horizontal axis 80. The cutting device 40 can rotate relative to the horizontal axis 80. Since the distance between the cutting device 40 and the horizontal axis 80 is relatively far, when the support arm 62 rotates at a small angle relative to the horizontal axis 80, the support arm 62 can drive the cutting device 40 to move a relatively large distance along the vertical direction Y, which is conducive to improving the vertical position adjustment efficiency of the cutting device 40.

[0346] Exemplarily, the cutting device 40 is detachably connected to the first connecting portion 62 b of the supporting arm 62 .

[0347] Exemplarily, the driver 41 of the cutting device 40 is connected to the first connecting portion 62 b of the supporting arm 62 .

[0348] Exemplarily, along the vertical direction Y, the blade cover 43 and the blade 42 of the cutting device 40 can be arranged below the support arm 62. Exemplarily, along the vertical direction Y, there is a distance between the blade cover 43 of the cutting device 40 and the support arm 62 to avoid the problem of position interference between the support arm 62 and the blade cover 43 when the support arm 62 swings relative to the support 61.

[0349] The height adjustment assembly 60 further includes a driving unit for driving the support arm 62 to rotate relative to the support 61 to adjust the height of the cutting device 40 relative to the ground.

[0350] In some examples, the cutting device 40 is connected to the driving unit. The driving unit is directly connected to the cutting device 40, and no other structure or component is required to transmit force. The driving unit does not need to exert a large force on the cutting device 40 to complete the lifting and lowering, and the operation is convenient.

[0351] 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, further driving the cutting device 40 to move up and down, so as to adjust the height of the cutting device 40 relative to the ground. The support arm 62 is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0352] The driving unit can apply a force to 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 height of the cutting device 40 above the ground.

[0353] 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 a region for bearing a force. The drive unit can transmit a force to the support arm 62 through the second connection portion 62c. There is a distance 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 a 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.

[0354] Exemplarily, the first connection portion 62b of the support arm 62 is located on a side of the second connection portion 62c away from the horizontal axis 80. The driver 41 of the cutting device 40 is located on a side of the second connection portion 62c of the support arm 62 away from the horizontal axis 80.

[0355] In some practicable embodiments, the cutting device 40 is rotatably connected to the height adjustment assembly 60. When the height adjustment assembly 60 drives the cutting device 40 to move vertically, the cutting device 40 also rotates relative to the height adjustment assembly 60, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the blade 42 only changes in height and does not swing relative to the horizontal plane. 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, so that when the support arm 62 drives the cutting device 40 to move vertically, the cutting device 40 itself will not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes in height and does not swing relative to the horizontal plane.

[0356] In some possible implementations, see Figure 4 and Figure 5 As shown, the support arm 62 includes a housing portion 62a. The housing 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 housing portion 62a passes through the support arm 62. The driver 41 of the cutting device 40 is connected to the support arm 62. The driver 41 is inserted into the housing portion 62a of the support arm 62, that is, the support arm 62 is sleeved on the outside of the driver 41, so that the driver 41 can reuse the housing portion 62a of the support arm 62, so as to effectively improve the compactness of the structure of the cutting system 20, reduce the overall volume, and occupy a small space. Along the vertical direction Y, the blade cover 43 of the cutting device 40 is arranged below the housing portion 62a.

[0357] For some examples, see Figure 4 and Figure 5As 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 connecting portion 62c is arranged on the transverse connecting arm 621. There is a distance between the transverse connecting arm 621 and the support 61. The first sub-support arm 622 is arranged on one side of the transverse connecting arm 621 facing the support 61, and the second sub-support arm 623 is arranged on the other side facing away from the support 61. Along the forward direction Z of the lawn mower 10, the first sub-support arm 622 and the second sub-support arm 623 are arranged on both sides of the transverse connecting arm 621 respectively. The forward direction Z of the lawn mower 10 is perpendicular to the horizontal direction X of the lawn mower 10. The first sub-support arm 622 is rotatably connected to the support 61 through a horizontal shaft 80. The second sub-support arm 623 is provided with a first connecting portion 62b.

[0358] 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, the end of the second sub-support arm 623 away from the transverse connecting arm 621 is provided with a first connecting portion 62b.

[0359] Exemplarily, the transverse connecting arm 621 is a strip-shaped structure. The length direction of the transverse connecting arm 621 is the same as the transverse direction X of the lawn mower 10. The width direction of the transverse connecting arm 621 is the same as the forward direction Z of the lawn mower 10. Along the width direction of the transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623 are respectively provided on both sides of the transverse connecting arm 621.

[0360] The driver 41 and the support 61 of the cutting device 40 are respectively located on both sides of the transverse connecting arm 621. By applying torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and the second sub-support arm 623 drives the driver 41 to move vertically. The transverse connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623 as a force-bearing structure, which is conducive to improving the overall structural compactness of the support arm 62 and taking up less space.

[0361] In some examples, in each support arm 62, the number of the first sub-support arms 622 is two. The two first sub-support arms 622 are arranged at intervals along the direction perpendicular to the vertical direction Y. The direction perpendicular to the vertical direction Y may be the same as the lateral direction X of the lawn mower 10. The two first sub-support arms 622 are arranged at intervals along the lateral direction 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 may 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 conducive to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying a small space.

[0362] In some examples, in each support arm 62, the number of the second sub-support arms 623 is two. The two second sub-support arms 623 are arranged at intervals along a direction perpendicular to the vertical direction Y. The direction perpendicular to the vertical direction Y may be the same as the lateral direction X of the lawn mower 10. The two second sub-support arms 623 are arranged at intervals along the lateral direction X of the lawn mower 10.

[0363] An accommodating portion 62a is formed between the two second sub-support arms 623. The driver 41 of the cutting device 40 is disposed between the two second sub-support arms 623 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.

[0364] The two second sub-support arms 623 are spaced apart 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 .

[0365] In some examples, one transverse guide member 64 may be rotatably connected to the two second sub-support arms 623 .

[0366] In some examples, the number of the support 61 is one. The two first sub-support arms 622 are rotatably connected to the same support 61 .

[0367] For some examples, see 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 direction of the vertical direction Y.

[0368] There is an angle α between the length direction of the transverse guide member 64 and the forward direction Z of the lawn mower 10. The angle α is greater than 0 degrees and less than 180 degrees. Exemplarily, when the 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.

[0369] 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 arranged at intervals along the transverse X of the lawn mower 10. The two first sub-support arms 622 are rotatably connected to the two supports 61 respectively. 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 conducive to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying a small space.

[0370] Exemplarily, along the length direction of the transverse connecting arm 621 , a second sub-support arm 623 is respectively provided at both ends of the transverse connecting arm 621 .

[0371] For some examples, see Figure 4 and Figure 5 As shown, the middle area of ​​the transverse connecting arm 621 is provided with a second connecting portion 62c. The driving unit is connected to the second connecting portion 62c. The driving unit can apply a force to the transverse connecting arm 621 to drive the support arm 62 to swing up and down as a whole. Exemplarily, the two first sub-support arms 622 are symmetrically arranged relative to the second connecting portion 62c, which is conducive to improving the force balance of the support arm 62. The two second sub-support arms 623 are symmetrically arranged relative to the second connecting portion 62c, which is conducive to improving the force balance of the support arm 62.

[0372] In some practicable embodiments, the height adjustment assembly 60 may include a support arm 62. The driving unit drives the support arm 62 to swing up and down relative to the horizontal axis 80, so that the support arm 62 drives the cutting device 40 to move vertically to adjust the height of the cutting device 40, thereby adjusting the height of the cutter disc 42 from the ground.

[0373] In some possible implementations, see Figure 4 and Figure 5 As shown, the height adjustment assembly 60 may include two support arms 62. The two support arms 62 are spaced apart along the vertical direction Y. The two support arms 62 are rotatably connected to the support 61 through a horizontal shaft 80. The two support arms 62 are rotatably connected to the driver 41 of the cutting device 40, respectively. Therefore, a four-bar linkage structure may be formed between the support 61, the two support arms 62, and the driver 41, thereby facilitating further improving the connection stability between the cutting device 40 and the support arms 62 and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0374] Along the vertical direction Y, the two support arms 62 have a first spacing relative to the two rotation axes of the support 61. Along the vertical direction Y, the two support arms 62 have a second spacing relative to the two rotation axes of the driver 41 of the cutting device 40. The first spacing is equal to the second spacing.

[0375] See also Figure 2 and Figure 4 As shown, the two rotation axes of the two support arms 62 relative to the support 61 are located in the same first vertical plane. The two rotation axes of the two support arms 62 relative to the cutting device 40 are located in the same second vertical plane. The two rotation axes of the two support arms 62 relative to the support 61 and the lines connecting the two rotation axes of the two support arms 62 relative to the cutting device 40 can form a parallelogram relationship. The first vertical plane and the second vertical plane are parallel to each other. In the process of the two support arms 62 driving the cutting device 40 to move vertically, the horizontal vertical distance between the first vertical plane and the second vertical plane decreases or increases.

[0376] In some examples, the two support arms 62 may have the same structural shape and size, which helps reduce processing costs.

[0377] In some examples, one of the two support arms 62 is connected to the drive unit. The two support arms 62 are respectively connected to the support 61 and the cutting device 40, so when the drive unit applies a force to one support arm 62, the two support arms 62 can swing up and down relative to the support 61 at the same time, and the two support arms 62 rotate relative to the driver 41 of the cutting device 40. Exemplarily, of the two support arms 62, the upper support arm 62 is connected to the drive unit.

[0378] In some possible implementations, see Figure 4 and Figure 5 As shown, the driving unit includes a first driving component (not shown) 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.

[0379] The cam 63 has a spiral surface 631. The spiral surface 631 spirally extends around the rotation axis. Along the vertical direction Y, the second connection portion 62c of the support arm 62 is arranged above the spiral surface 631 of the cam 63. The second connection 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 reverse, the second connection portion 62c of the support arm 62 moves relative to the spiral surface 631 of the cam 63, so that the support arm 62 as a whole swings relative to the support 61, so that the height of the cutting device 40 can be adjusted.

[0380] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the movement stability of the support arm 62 during the swinging process relative to the support 61 and reducing the possibility of impact and setback between the support arm 62 and the cam 63.

[0381] Exemplarily, there are two support arms 62. The two support arms 62 are spaced apart along the vertical direction Y, and the two support arms 62 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 arranged above the spiral surface 631 of the cam 63, and at least part of the cam 63 is arranged in the space between the first sub-support arms 622 of the two support arms 62, thereby reducing the overall volume and occupying less space.

[0382] Exemplarily, the second connection 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 connection portion 62c abuts against the helical surface 631 of the cam 63, which is conducive to reducing the friction resistance between the second connection portion 62c and the helical surface 631.

[0383] Exemplarily, when the first driving component 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, increases the height of the cutting device 40, and increases the distance between the blade disc 42 and the ground. When the first driving component 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, reduces the height of the cutting device 40, and reduces the distance between the blade disc 42 and the ground.

[0384] Exemplarily, when the first driving component drives the cam 63 to reverse, under the gravity force 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 maintains contact with the spiral surface 631 of the cam 63.

[0385] For some examples, see Figure 4 or Figure 5 As shown, 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. The cam 63 can utilize the space between the two first sub-support arms 622 to improve the overall compactness of the height adjustment assembly 60, reduce the overall volume of the height adjustment assembly 60, and occupy a smaller space.

[0386] In some examples, the first driving component includes a motor, and an output shaft of the motor is connected to the cam 63 .

[0387] In some possible implementations, the first driving component may be disposed on the fuselage 30 , so that the fuselage 30 may carry the driving unit. Exemplarily, the first driving component may be detachably connected to the fuselage 30 .

[0388] See also Figure 2 , Figure 4 and Figure 5 As shown, the height adjustment assembly 60 of the embodiment of the present application further includes a transverse guide 64. The height adjustment assembly 60 is used to drive the transverse guide 64 to move vertically in the vertical direction Y to adjust the height of the transverse guide 64, thereby adjusting the height of the cutting device 40. The cutting device 40 is slidably connected to the transverse guide 64. When the cutting device 40 is subjected to a force in the transverse direction X of the lawn mower 10, the cutting device 40 can move laterally on the transverse guide 64, so that the cutting device 40 can move between the center position and the side cutting position.

[0389] In some possible implementations, the driver 41 of the cutting device 40 can be slidably connected to the transverse guide 64. In some examples, the housing of the driver 41 can be slidably connected to the transverse guide 64.

[0390] In some examples, the transverse guide member 64 may be a circular shaft, and a rotation connection may be formed between the transverse guide member 64 and the support arm 62, without the need for additional circular rotating assembly parts, thereby reducing assembly difficulty and assembly cost.

[0391] In some examples, the ends of the lateral guide 64 are connected to the ends of the support arm 62 .

[0392] The cutting device 40 may include an axial hole. The transverse guide 64 is inserted into the axial hole of the cutting device 40. The transverse guide 64 passes through the cutting device 40, which is beneficial to improve the connection stability and reliability between the transverse guide 64 and the cutting device 40, and effectively avoid the situation where the cutting device 40 falls off or separates from the transverse guide 64. The axial direction of the transverse guide 64 is the same as the transverse X of the lawn mower 10. Exemplarily, a bushing (not shown in the figure) is provided in the axial hole of the cutting device 40. The transverse guide 64 is inserted into the bushing. The bushing can isolate the cutting device 40 from the transverse guide 64, which is beneficial to avoid the problem that the cutting device 40 directly slides back and forth on the transverse guide 64 and causes the cutting device 40 to wear.

[0393] For example, the material of the bushing can be a metal material. The material of the transverse guide 64 can be a metal material. The driver 41 of the cutting device 40 includes a housing. The material of the housing can be plastic.

[0394] For some examples, see 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 transverse guide member 64 via the sliding connection member 44. The sliding connection member 44 is provided with an axial hole. The sliding connection member 44 can be connected to the driver 41.

[0395] In some examples, the height adjustment assembly 60 includes a support arm 62. A transverse guide 64 is rotatably connected to the support arm 62. The rotation axis of the transverse 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 transverse guide 64. The cutting device 40 can slide laterally on the transverse guide 64, and the cutting device 40 and the transverse guide 64 can rotate around the horizontal axis relative to the support arm 62. The height adjustment assembly 60 can drive the transverse guide 64 to move vertically in the vertical direction Y, so as to drive the cutting device 40 to move vertically through the transverse guide 64. During the vertical movement of the cutting device 40, the cutting device 40 and the transverse guide 64 rotate synchronously relative to the support arm 62, so that the cutting device 40 itself will not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes in height and does not swing relative to the horizontal plane.

[0396] Exemplarily, the support arm 62 includes a first connection portion 62b. A spacing exists between the first connection portion 62b of the support arm 62 and the horizontal axis 80. The transverse guide member 64 is connected to the first connection portion 62b of the support arm 62. The transverse guide member 64 is rotatably connected to the first connection portion.

[0397] In some examples, the support arm 62 includes a second sub-support arm 623. The driver 41 can be slidably connected to the second sub-support arm 623, and the driver 41 can be rotatably connected to the second sub-support arm 623. The movable connection between the driver 41 and the second sub-support arm 623 can make the overall structure formed by the driver 41 and the support arm 62 more compact and occupy less space.

[0398] In some examples, the support arm 62 includes a second support sub-arm 623. The transverse guide 64 is rotatably connected to the second support sub-arm 623. The driver 41 is slidably connected to the transverse guide 64.

[0399] The connection between the driver 41 and the second sub-support arm 623 through the transverse guide member 64 is conducive to reducing the design difficulty of the connection structure between the driver 41 and the second sub-support arm 623 and the difficulty of disassembly and assembly between the driver 41 and the second sub-support arm 623, thereby reducing processing costs and maintenance costs.

[0400] In some examples, the support arm 62 includes a receiving portion 62a. The transverse guide 64 is arranged corresponding to the receiving portion 62a of the support arm 62. The receiving portion 62a is formed between the transverse guide 64 and the support arm 62. The transverse guide 64 and the support arm 62 are arranged together around the receiving portion 62a. The driver 41 of the cutting device 40 can be inserted into the receiving portion 62a of the support arm 62. The driver 41 of the cutting device 40 can be slidably connected to the transverse guide 64.

[0401] 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 arranged at intervals, so that a receiving portion 62a is formed 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 transverse guide member 64. The sliding direction of the cutting device 40 is the same as the transverse direction X of the lawn mower 10. The transverse guide member 64 is rotatably connected to the two second sub-support arms 623. The two ends of the transverse guide member 64 are rotatably connected to the two second sub-support arms 623 respectively. The two second sub-support arms 623, the transverse connecting arm 621 and the transverse guide member 64 are arranged together around the receiving portion 62a, so that the two second sub-support arms 623, the transverse connecting arm 621 and the transverse guide member 64 are in a "mouth"-shaped structure.

[0402] 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.

[0403] 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 member 64 is inserted into the connecting hole, and the transverse guide member 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 member 64 is rotatably connected to the second sub-support arm 623 through the bearing.

[0404] Exemplarily, 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. Alternatively, 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 contacts one of the second sub-support arms 623, the cutting device 40 slides to the extreme position, that is, the cutting device 40 slides to the side cutting position. When the cutting device 40 contacts another second sub-support arm 623, the cutting device 40 slides to the extreme position, that is, the cutting device 40 slides to the center position.

[0405] Alternatively, the position adjustment device 50 can drive the cutting device 40 to move laterally to any 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 or 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 contacts any of the second sub-support arms 623, the cutting device 40 slides to the extreme position, that is, the cutting device 40 slides to the side cutting position.

[0406] In some possible implementations, see Figure 2 , Figure 4 and Figure 5 As shown, the height adjustment assembly 60 may include a support arm 62 and a transverse guide 64. The number of the support arms 62 is two. The two support arms 62 are spaced apart along the vertical direction Y. The number of the transverse guides 64 is two. The two transverse guides 64 are spaced apart along the vertical direction Y. The two transverse guides 64 are rotatably connected to the two support arms 62, respectively. The two transverse guides 64 are slidably connected to the cutting device 40, respectively. The cutting device 40 is rotatably connected to the support arm 62 via the transverse guide 64. Therefore, a four-bar linkage structure relationship may be formed between the support 61, the two support arms 62, the two transverse guides 64 and the cutting device 40, thereby facilitating further improving the connection stability between the support 61, the support arm 62, the transverse guide 64 and the cutting device 40 and the position stability of the cutting device 40 during the rotation process relative to the support arm 62. The two transverse guides 64 are respectively connected to the cutting device 40, and the two transverse guides 64 are relatively fixed through the cutting device 40, eliminating the need for additional fixings for connecting the two transverse guides 64 or the two support arms 62, thereby saving accessory costs. At the same time, based on the four-bar linkage, 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.

[0407] In some examples, the cutting device 40 further includes a sliding connection 44. The cutting device 40 is slidably connected to the transverse guide 64 via the sliding connection 44, and the sliding connection 44 is rotatably connected to the support arm 62 via the transverse guide 64. A four-bar linkage structure may be formed between the support 61, the two support arms 62, the two transverse guides 64, and the sliding connection 44. Exemplarily, the sliding connection 44 is connected to the driver 41. The sliding connection 44 may be slidably connected to the transverse guide 64. The way in which the cutting device 40 is slidably connected to the transverse guide 64 via the sliding connection 44 is conducive to reducing the complexity of the connection structure between the cutting device 40 and the transverse guide 64, and at the same time, the stability of the sliding process of the cutting device 40 relative to the transverse guide 64 can be ensured.

[0408] In some examples, along the vertical direction Y, the two support arms 62 have a first spacing relative to the two rotation axes of the support 61. Along the vertical direction Y, the two transverse guides 64 have a second spacing relative to the two rotation axes of the cutting device 40. The first spacing is equal to the second spacing.

[0409] The two rotation axes of the two support arms 62 relative to the support 61 are located in the same first vertical plane. The two transverse guide members 64 are located in the same second vertical plane relative to the rotation axis of the cutting device 40. The lines connecting the two rotation axes of the two support arms 62 relative to the support 61 and the two rotation axes of the two transverse guide members 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. When the two support arms 62 swing to drive the cutting device 40 to move vertically, the horizontal vertical distance between the first vertical plane and the second vertical plane changes.

[0410] In some examples, the transverse guide member 64 can be a circular shaft. Both ends of the transverse guide member 64 are rotatably connected to the support arm 62. The axes of the two transverse guide members 64 are the rotation axes of the two transverse guide members 64 relative to the cutting device 40. The axes of the two transverse guide members 64 are parallel to each other. The axes of the two transverse guide members 64 are located in the same second vertical plane.

[0411] In some achievable ways, the two transverse guides 64 are connected to each other. The two transverse guides 64 are connected by a connecting component. A four-bar structure relationship can be formed between the support 61, the two support arms 62, the two transverse guides 64 and the connecting component, which is conducive to further improving the connection stability between the support 61, the support arm 62, the transverse guide 64 and the connecting component and the position stability of the cutting device 40 during the rotation process relative to the support arm 62. Exemplarily, the cutting device 40 can be connected to any one of the two transverse guides 64. Exemplarily, the connecting component has two axial holes. The two transverse guides 64 are respectively penetrated through the two axial holes of the connecting component so that the two transverse guides 64 are connected to each other. Exemplarily, the connecting component can be a connecting plate.

[0412] In some achievable embodiments, the two transverse guide members 64 are slidably connected to the cutting device 40 respectively, and the two transverse guide members 64 are connected to each other.

[0413] In some possible implementations, see Figure 2 , Figure 4 and Figure 5As shown, the cutting device 40 further includes a sliding connection member 44. The cutting device 40 is slidably connected to the transverse guide member 64 via 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 conducive 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 that of the housing. Alternatively, the sliding connection member 44 is detachably connected to the housing of the driver 41.

[0414] In some examples, the number of the sliding connectors 44 may be two. The two sliding connectors 44 are arranged at intervals along the lateral direction X of the lawn mower 10, that is, along the sliding direction of the cutting device 40, the two sliding connectors 44 are arranged at intervals. The two sliding connectors 44 are simultaneously slidably connected to the lateral guide member 64, which can further ensure the smoothness of the sliding process of the cutting device 40 relative to the lateral guide member 64.

[0415] See also Figure 2 , Figure 4 and Figure 5 As shown, the position adjustment device 50 of the embodiment of the present application also 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 member 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 arranged above the blade cover 43. The blade cover 43 can prevent the cut grass clippings from entering the position where the transverse drive assembly 70 is located, which is conducive to avoiding the problem of excessive grass clippings accumulating at the transverse drive assembly 70 and causing failure.

[0416] In the embodiment of the present application, the height adjustment assembly 60, the cutting device 40 and the lateral drive assembly 70 are connected to each other to form an integral structure. The cutting device 40 is driven to move by the cooperation between the lateral drive assembly 70 and the height adjustment assembly 60. The lateral drive assembly 70 and the height adjustment assembly 60 are independently arranged, which is conducive to reducing the structural complexity of the position adjustment device 50 and the difficulty of processing and manufacturing the position adjustment device 50.

[0417] In some achievable embodiments, 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 stable driving force for the cutting device 40 to ensure that the sliding process of the cutting device 40 on the transverse guide 64 is stable.

[0418] The cutting device 40 includes a receiving groove 40a. At least 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 gap 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 slide in the receiving groove 40a at the same time, effectively avoiding the occurrence of a jam between the deflection cam 71 and the cutting device 40 when the cutting device 40 moves vertically.

[0419] The deflection cam 71 is arranged in the accommodating groove 40a so that the deflection cam 71 can realize spatial reuse with the cutting device 40, thereby 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.

[0420] The receiving groove 40a has two opposite side surfaces. The two opposite side surfaces of the receiving groove 40a are arranged at intervals along the lateral direction X of the lawn mower 10. The deflection cam 71 is in close contact with both 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 a side cutting state. In the side cutting state, the deflection cam 71 maintains close contact with both the two opposite side surfaces of the receiving groove 40a.

[0421] When the transverse driving assembly 70 drives the deflection cam 71 to rotate forward or reversely, 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 apply a force to the cutting device 40 to push the cutting device 40 to slide relative to the transverse guide 64, thereby realizing the transverse movement of the cutting device 40.

[0422] In some examples, in the vertical direction Y, the receiving groove 40 a passes through the cutting device 40 up and down.

[0423] For some examples, see Figure 2 and Figure 4As shown, the transverse drive assembly 70 includes a second drive component 72. The deflection cam 71 is connected to the output shaft of the second drive component 72. The second drive component 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 component 72 is connected to the edge position of the deflection cam 71. Along the radial direction of the deflection cam 71, there is a gap between the output shaft of the second drive component 72 and the wheel center of the deflection cam 71. When the second drive component 72 drives the deflection cam 71 to rotate, the motion trajectory of the wheel center of the deflection cam 71 is a circular trajectory formed around the axis of the output shaft. Exemplarily, the deflection cam 71 can be a circular wheel structure. Exemplarily, the second drive component 72 can be connected to the fuselage 30. The fuselage 30 carries the transverse drive assembly 70. The relative position of the transverse drive assembly 70 and the fuselage 30 does not change.

[0424] In some examples, the second driving component 72 may include a motor and a gearbox, wherein the motor is connected to an input shaft of the gearbox, and an output shaft of the gearbox is connected to the deflection cam 71 .

[0425] In some examples, the second driving component 72 may include a motor, and an output shaft of the motor is connected to the deflection cam 71 .

[0426] In some examples, the cutting device 40 includes two sliding connectors 44. The two sliding connectors 44 are arranged at intervals along the sliding direction of the cutting device 40. The space between the two sliding connectors 44 forms a receiving groove 40a.

[0427] In some examples, the deflection cam 71 is provided with a first limiting portion 711. The body 30 is provided with a second limiting portion (not shown in the figure) and a third limiting portion (not shown in the figure). The second limiting portion and the third limiting portion are arranged at intervals along the sliding direction of the cutting device 40. When the cutting device 40 is in the center position, the first limiting portion 711 contacts the second limiting portion for limiting. When the cutting device 40 is in the side cutting position, the first limiting portion 711 contacts the third limiting portion for limiting.

[0428] When the cutting device 40 is driven to move horizontally from the side cutting position to the center position by the deflection cam 71, the first limit portion 711 of the deflection cam 71 cooperates with the second limit portion of the body 30, so that the deflection cam 71 rotates to a predetermined position. The second limit portion can limit the deflection cam 71 from further rotating, thereby avoiding the problem that the deflection cam 71 rotates too much and causes the cutting device 40 to fail to accurately move to the center position.

[0429] When the cutting device 40 is driven to move laterally from the center position to the side cutting position by the deflection cam 71, the first limiting portion 711 of the deflection cam 71 cooperates with the third limiting portion of the body 30, so that the deflection cam 71 rotates to a predetermined position. The third limiting portion limits the deflection cam 71 from continuing to rotate, thereby avoiding the problem that the deflection cam 71 rotates too much and causes the cutting device 40 to fail to accurately move to the side cutting position.

[0430] The first limiting portion 711 cooperates with the second limiting portion and the first limiting portion 711 cooperates with the third limiting portion to ensure the accuracy of the cutting device 40 moving horizontally to the center position or the edge cutting position, thereby improving the accuracy of position movement.

[0431] In some examples, the first limiting portion 711 is provided on the surface of the deflection cam 71 facing away from the transverse guide member 64. The first limiting portion 711 and the output shaft of the second driving component 72 are respectively provided on both sides of the wheel 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 matched with the limiting shaft. Alternatively, the first limiting portion 711 is a limiting groove. The second limiting portion and the third limiting portion can be limiting shafts matched with the limiting groove.

[0432] In some achievable ways, Figure 6 The partial structure of the cutting system 20 is schematically shown. Figure 6 As shown, the transverse drive assembly 70 includes a screw rod 73 and an adapter 74. The screw rod 73 is threadedly connected to the adapter 74. The adapter 74 is connected to the cutting device 40. The threaded connection between the screw rod 73 and the adapter 74 is conducive to ensuring the smooth movement of the adapter 74 and the displacement accuracy of the adapter 74, thereby ensuring the smooth movement and displacement accuracy of the cutting device 40.

[0433] 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 a jam between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0434] The axial direction of the screw rod 73 is the same as the lateral direction X of the lawn mower 10. When the lateral drive assembly 70 drives the screw rod 73 to rotate, the adapter 74 can move relative to the screw rod 73 along the axial direction of the screw rod 73, so that the adapter 74 can push and pull the cutting device 40, so that the cutting device 40 can move laterally on the lateral guide member 64.

[0435] In some examples, the cutting device 40 includes a receiving groove 40a. At least part of the adapter 74 is disposed in the receiving groove 40a. The adapter 74 can realize spatial reuse with the cutting device 40, improve the structural compactness of the adapter 74 and the cutting device 40, reduce the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupy a small space. 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 gap 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 slide in the receiving groove 40a at the same time, effectively avoiding jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0436] In some examples, Figure 7 The partial structure of the transverse drive assembly 70 is schematically shown. Figure 7 As shown, the adapter 74 includes a main body 741 and two wing plates 742. The wing plate 742 is 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 arranged at intervals along the axial direction of the screw rod 73. Threaded holes are arranged on the wing plates 742. The screw rod 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 transverse drive assembly 70 drives the screw rod 73 to rotate, the wing plates 742 can move relative to the screw rod 73 along the axial direction of the screw rod 73, so that the wing plates 742 can push and pull the cutting device 40.

[0437] 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 part of the wing plate 742 is disposed in the receiving groove 40a. The two wing plates 742 of the adapter 74 can be inserted into the receiving groove 40a, and the wing plates 742 are in contact with the side surface of the receiving groove 40a, so that the wing plates 742 of the adapter 74 can achieve spatial reuse with the cutting device 40, improve the structural compactness of the adapter 74 and the cutting device 40, reduce the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupy a small 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 in the receiving groove 40a.

[0438] In some examples, the cutting device 40 includes two sliding connectors 44. The two sliding connectors 44 are spaced apart along the axial direction of the screw rod 73. The space between the two sliding connectors 44 forms a receiving groove 40a. At least 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 conducive to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying less space.

[0439] In some achievable embodiments, the lateral drive assembly 70 includes a second drive component 72. The screw rod 73 is connected to the output shaft of the second drive component 72. In some examples, the second drive component 72 includes a motor. The screw rod 73 is connected to the output shaft of the motor. In some examples, the second drive component 72 is disposed on the fuselage 30.

[0440] In some achievable ways, Figure 8 The partial structure of the cutting system 20 is schematically shown. Figure 8 As shown, the transverse drive 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 way in which the telescopic rod 75 is connected to the adapter 74 is conducive to ensuring the smooth movement of the adapter 74, and at the same time is conducive to ensuring the displacement accuracy of the adapter 74, thereby ensuring the smooth movement and displacement accuracy of the cutting device 40. 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 the occurrence of jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0441] 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 drive assembly 70 drives the telescopic rod 75 to telescopically move, 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, so that the cutting device 40 can move laterally on the lateral guide member 64.

[0442] Fig. 9 The partial structure of the cutting system 20 is schematically shown. Fig. 9 As shown, the embodiment of the present application further 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 and a transverse 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 transverse guide 64. The cutting device 40 is connected to the transverse 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 transverse 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 height of the cutting device 40 above the ground. The cutting device 40 is used for mowing. In the first state, the rotation speed of the cutter disc 42 is greater than or equal to the rotation speed of the cutter disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing.

[0443] When the cutting device 40 is subjected to a component force or a resultant force along the length direction of the transverse guide member 64, the cutting device 40 slides relative to the transverse guide member 64 so that the cutting device 40 moves between the center position and the side cutting position.

[0444] 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 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, when the cutting device 40 is subjected to a component force or a resultant force along the length direction of the transverse guide 64, the cutting device 40 slides relative to the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64, thereby realizing the movement of the cutting device 40 between the center position and the side cutting position. For example, the cutting device 40 can be pushed to slide relative to the transverse guide 64 manually. Alternatively, the cutting device 40 can be pushed to slide relative to the transverse guide 64 by setting a transverse drive assembly 70 to realize the automatic adjustment of the position of the cutting device 40.

[0445] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0446] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0447] When the cutting device 40 is in the side cutting position, the cutting device 40 can trim the area close to the lawn boundary, thereby helping to avoid leaving too large an area of ​​uncut lawn at the lawn boundary, and helping to improve cutting efficiency and cutting effect.

[0448] 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, so that when the cutting device 40 is located at the side cutting position, along the vertical direction Y, the second lower edge 43a of the blade cover 43 can be lower than the first lower edge 311 of the body 30, and the second lower edge 43a of the blade cover 43 can be lower than the blade 42. There is a large safety distance between the second lower edge 43a of the blade cover 43 and the blade 42. When the lawn mower 10 is carried, the palm of the operator can be placed on the side skirt 31 of the body 30, and the fingertips of the fingers can be buckled inside the blade cover 43. Under the protective effect of the blade cover 43, most of the operator's fingers are located outside the blade cover 43, so that the operator's fingers are not easy to touch the blade 42. At the same time, the second lower edge 43a of the blade cover 43 is lower than the blade 42, so that when the operator's fingers bypass the second lower edge 43a of the blade cover 43 and buckle into the inside of the blade cover 43, the fingertips of the fingers are not likely to touch the blade 42.

[0449] 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 close to the lawn boundary and improve 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 located at the edge cutting position can meet the use requirements of the lawn mower 10 and will not cause injuries to people or animals.

[0450] In some achievable embodiments, after the moving action and the height adjustment action are completed and the cutting device is started, the rotation speed of the blade disc 42 is increased to 1800-3500 rpm in a state where the grass is not stuck.

[0451] After the moving action and the height adjustment action are completed and the cutting device is started, the rotation speed of the cutter disc 42 in the state of not getting stuck in the grass cannot be lower than 1800 rpm. Otherwise, the force applied when the vegetation contacts the blade 421 is too small, and the vegetation cannot be cut smoothly. It is easy to get stuck in the grass, and even the cutter disc 42 stops rotating due to the grass, which may also cause missed cutting. The resistance of the grass to the cutter disc 42 will also be greater, resulting in a stall. When the rotation speed of the cutter disc 42 is between 1800 rpm and 3500 rpm, it is an ideal cutting state. If the rotation speed of the cutter disc 42 is increased, it will basically maintain near the corresponding cutting efficiency. Even if the rotation speed is too fast, it cannot form sufficient contact with the grass surface, and the cutting effect will be slightly worse. At the same time, the rotation speed of the cutter disc 42 during cutting cannot be greater than 3500 rpm. If it is higher than this speed, the cutter disc 42 will rotate too fast, causing greater noise, more unnecessary energy consumption, and the safety factor will decrease, and the risk factor will increase. Therefore, the rotation speed of the cutter disc 42 is maintained at 1800-3500 rpm, which is an ideal cutting state. The rotation speed of the cutter disc 42 will also affect the life of the blade. Before the rotation speed of the cutter disc 42 reaches 1800 rpm, it is basically in a non-cutting state, and the blade 421 can maintain a basically stable service life. When the rotation speed of the cutter disc 42 reaches 1800 rpm, it enters the working state of cutting vegetation, and the service life of the blade 421 begins to decrease. When the rotation speed of the cutter disc 42 exceeds 1800 rpm, the service life of the blade 421 decreases significantly. If the rotation speed is too fast, negative pressure is easily formed, which will attract foreign particles (such as pebbles, etc.) other than vegetation to the blade 421 of the cutter disc 42, causing damage to the blade edge, thereby affecting the service life of the cutter head. Therefore, the rotation speed of the cutter disc 42 is maintained at 1800-3500 rpm, which is an ideal cutting state. At this time, the service life of the cutter head is also maintained below a normal wear expectation.

[0452] In some achievable embodiments, the support arm 62 is connected to a drive unit; and / or the cutting device 40 is connected to a drive unit; and / or the transverse guide 64 is connected to a drive unit.

[0453] In some achievable embodiments, at least one support arm 62 is connected to a drive unit; and / or the cutting device 40 is connected to a drive unit; and / or at least one transverse guide 64 is connected to a drive unit.

[0454] At least one of the support arm 62, the cutting device 40 and the transverse guide 64 may be connected to a drive unit.

[0455] In some practicable embodiments, the drive unit is connected to at least one support arm 62. The drive unit drives the support arm 62 to rotate up and down, further driving the cutting device 40 to move up and down, thereby adjusting the height of the cutting device 40 relative to the ground. The support arm 62 is connected to the drive unit, which reduces the installation difficulty and improves the stability of the structural assembly.

[0456] 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 and abuts against the spiral surface 631 .

[0457] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the movement stability of the support arm 62 during the swinging process relative to the support 61 and reducing the possibility of impact and setback between the support arm 62 and the cam 63.

[0458] In some achievable ways, Fig.10 The partial structure of the cutting system 20 is schematically shown. Fig.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 no other structure or component is required to transmit force. The driving unit does not need to exert a large force on the cutting device 40 to complete the lifting and lowering, and the operation is convenient.

[0459] 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 portion 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 transverse guide member 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 transverse guide member 64.

[0460] 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 cutting device 40 and reducing the possibility of impact and setback between the cutting device 40 and the cam 63.

[0461] In some achievable ways, Fig.11 The partial structure of the cutting system 20 is schematically shown. Fig.11 As shown, at least one transverse guide 64 is connected to the drive unit. The transverse guide 64 serves as an intermediate connection structure between the support arm 62 and the cutting device 40. The movement of the transverse guide 64 drives the support arm 62 and the cutting device 40 to move, without requiring too many structures and components for force transmission, thereby ensuring the stability of the motion state.

[0462] In some examples, the driving unit includes a cam 63. The cam 63 includes a spiral surface 631. The transverse guide 64 is connected to the driving unit. The transverse guide 64 abuts against the spiral surface 631. One end of the transverse guide 64 can abut against the spiral surface 631 of the cam 63. The driving unit drives the transverse guide 64 to move up and down, so as to drive the cutting device 40 to move up and down, so as to adjust the height of the cutting device 40 relative to the ground, and at the same time drives the support arm 62 to rotate relative to the support 61.

[0463] 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 transverse guide member 64 and reducing the possibility of impact and setback between the transverse guide member 64 and the cam 63.

[0464] In some achievable ways, the support arm 62 is provided with a driving unit. The support arm 62 is connected to the driving unit. The support arm 62 abuts against the spiral surface 631. The cutting device 40 is provided with a driving unit. The cutting device 40 is connected to the driving unit. The cutting device 40 abuts against the spiral surface 631. The transverse guide 64 is provided with a driving unit. The transverse guide 64 is connected to the driving unit. The transverse guide 64 abuts against the spiral surface 631.

[0465] Fig.12 The partial structure of the cutting system 20 is schematically shown. Fig.12 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 transverse guide 64 and a transverse drive assembly 70.

[0466] 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 transverse guide 64. The cutting device 40 is connected to the transverse guide 64. The cutting device 40 includes a blade disc 42. The transverse 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 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 action to adjust the height of the cutting device 40 above the ground. In the first state, the rotation speed of the blade disc 42 is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0467] 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 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 slide on the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0468] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0469] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0470] In some achievable ways, Fig.13 The partial structure of the cutting system 20 is schematically shown. Fig.13 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 first sub-support arm 622 is arranged on one side of the transverse 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 transverse guide member 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.

[0471] By applying torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and 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 conducive to improving the overall compactness of the support arm 62 and taking up less space.

[0472] Fig.14 The partial structure of the cutting system 20 is schematically shown. Fig.14As 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 transverse guide members 64, a support 61, a drive unit and a transverse drive assembly 70.

[0473] The number of transverse guides 64 is consistent with the number of support arms 62 and corresponds to each other. Each support arm 62 is arranged at intervals along the vertical direction Y. One end of all support arms 62 can be rotatably connected to the support 61. The other end of all support arms 62 can be rotatably connected to the corresponding transverse guide 64. Each support arm 62 is relatively fixed; and / or, each transverse guide 64 is relatively fixed. The cutting device 40 is connected to at least one transverse guide 64. The cutting device 40 includes a blade disc 42. The transverse 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 transverse guide 64. The drive unit is used to drive all support arms 62 to rotate relative to the support 61 to perform a height adjustment action to adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0474] 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 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 slide on the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0475] Each support arm 62 is relatively fixed; and / or each transverse guide member 64 is relatively fixed. Each support arm 62 is relatively fixed, which means that the relative positions of each support arm 62 are relatively fixed. Each transverse guide member 64 is relatively fixed, which means that the relative positions of each transverse guide member 64 are relatively fixed. A connecting rod structure relationship can be formed between the support 61, all the support arms 62, and all the transverse guide members 64, which is conducive to further improving the connection stability between the support 61, the support arm 62, and the transverse guide member 64, and the position stability of the cutting device 40 during the rotation process relative to the support arm 62.

[0476] In some possible implementations, see Fig.14 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 transverse guide 64 and a transverse drive assembly 70.

[0477] The number of the support arms 62 and the number of the transverse guide members 64 are both two. The two support arms 62 are arranged at intervals along the vertical direction Y. One end of the two support arms 62 can be rotatably connected to the support 61 respectively. The other ends of the two support arms 62 can be rotatably connected to the corresponding transverse guide members 64 respectively. The two support arms 62 are relatively fixed; and / or, the two transverse guide members 64 are relatively fixed. The cutting device 40 is slidably connected to at least one transverse guide member 64. The cutting device 40 includes a blade disc 42. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse guide member 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. Adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the movement action is completed and the cutting device 40 is started, and the second state is a state of performing the movement action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0478] The position adjustment device 50 includes two support arms 62 and two transverse guides 64. The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The two support arms 62 are relatively fixed, which means that the relative positions between the two support arms 62 are relatively fixed. The two transverse guides 64 are relatively fixed, which means that the relative positions between the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, which is conducive to further improving the connection stability between the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0479] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0480] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0481] In some achievable ways, the number of the 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 rotatably connected to the support 61 respectively. The number of the transverse guides 64 is two. The two transverse guides 64 are arranged at intervals along the vertical direction Y. The two transverse guides 64 are rotatably connected to the two support arms 62 respectively. The two transverse guides 64 are slidably connected to the cutting device 40 respectively. Therefore, a four-bar linkage structure relationship can be formed between the support 61, the two support arms 62, the two transverse guides 64 and the cutting device 40, which is conducive to further improving the connection stability between the support 61, the support arms 62, the transverse guides 64 and the cutting device 40 and the position stability of the cutting device 40 during the rotation process relative to the support arms 62. The two transverse guides 64 are respectively connected to the cutting device 40, and the relative fixation of the two transverse guides 64 is realized through the cutting device 40, eliminating the additional fixing parts connecting the two transverse guides 64 or the two support arms 62, saving the cost of accessories.

[0482] In some practicable embodiments, the uppermost support arm 62 is connected to a driving unit. The driving 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, so there is no need to set a connecting structure between the driving unit and the lower support arm 62, which is conducive to reducing the difficulty of designing the connecting structure between the driving unit and the two support arms 62.

[0483] In some achievable embodiments, the two support arms 62 are connected to each other; and / or the two transverse guide members 64 are connected to each other.

[0484] 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 structure can be formed between the support 61, the two support arms 62, the two transverse guides 64 and the connecting component, which is conducive to further improving the connection stability between the support 61, the support arms 62, the transverse guides 64 and the connecting component and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0485] In some examples, the two transverse guide members 64 are connected to each other. The two transverse guide members 64 are connected by a connecting member. A four-bar structure can be formed between the support 61, the two support arms 62, the two transverse guide members 64 and the connecting member, thereby further improving the connection stability between the support 61, the support arm 62, the transverse guide member 64 and the connecting member, and the position stability of the cutting device 40 during the rotation process relative to the support arm 62.

[0486] In some examples, the two support arms 62 are connected to each other, and the two lateral guides 64 are connected to each other.

[0487] In some practicable embodiments, the position adjustment device 50 further includes a transverse drive assembly 70. The transverse drive assembly 70 is used 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 transverse guide member 64. The transverse drive assembly 70 drives the cutting device 40 to move transversely, which is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0488] In some achievable manners, the support arm 62 is rotatably connected to the support 61 via a horizontal shaft 80. The support arm 62 includes a first connection portion 62b. The transverse guide member 64 is rotatably connected to the first connection portion 62b. The manner in which the support arm 62 and the support 61 are connected via the horizontal shaft 80 is conducive to reducing the structural design difficulty and disassembly difficulty of forming a rotating pair between the support arm 62 and the support 61, and reducing the processing cost and maintenance cost.

[0489] In some achievable embodiments, the support arm 62 includes a second connection portion 62c. The drive unit is connected to the second connection portion 62c. The second connection portion 62c is located between the first connection portion 62b and the horizontal shaft 80. The second connection portion 62c is located on the side of the horizontal shaft 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.

[0490] In some achievable embodiments, each support arm 62 includes at least two transverse connecting arms 621. All transverse connecting arms 621 constitute a transverse connecting arm group. A first sub-support arm 622 is disposed on one side of the transverse connecting arm group, and a second sub-support arm 623 is disposed on the other side. Exemplarily, along a direction perpendicular to the transverse guide member 64, at least two transverse connecting arms 621 are disposed at intervals.

[0491] 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 drive unit to improve the arrangement flexibility of the drive unit.

[0492] In some achievable embodiments, each support arm 62 includes a transverse connecting arm 621. A first sub-support arm 622 is disposed on one side of the transverse connecting arm 621, and a second sub-support arm 623 is disposed on the other side.

[0493] In some achievable ways, Fig.15 The partial structure of the cutting system 20 is schematically shown. Fig.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. The first sub-support arm 622 is arranged on one side of the transverse 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 transverse guide member 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.

[0494] By applying torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and 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 conducive to improving the overall compactness of the upper support arm 62 and taking up less space.

[0495] Fig.16 The partial structure of the cutting system 20 is schematically shown. Fig.16 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 one support arm 62, a support 61, a drive unit, a transverse guide 64 and a transverse drive assembly 70.

[0496] 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 provided on one side of the transverse connecting arm 621, and the second sub-support arm 623 is provided 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 blade 42. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length 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 action to adjust the height of the cutting device 40 above the ground. In the first state, the rotation speed of the blade 42 is greater than or equal to the rotation speed of the blade 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0497] In each support arm 62 , there are two first sub-support arms 622 . Along the length direction of the transverse guide member 64 , the first sub-support arms 622 are arranged at intervals.

[0498] In each support arm 62, there are two second sub-support arms 623. The two second sub-support arms 623 are arranged at intervals along the length direction of the transverse guide member 64. An accommodating portion 62a is formed between the two second sub-support arms 623.

[0499] In some possible implementations, see Fig.16 As shown, the position adjustment device 50 may include a support arm 62 .

[0500] 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 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 length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0501] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0502] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0503] By applying torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support 61, and 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 conducive to improving the overall compactness of the support arm 62 and taking up less space.

[0504] In some achievable embodiments, each support arm 62 includes at least two transverse connecting arms 621. All transverse connecting arms 621 constitute a transverse connecting arm group. A first sub-support arm 622 is disposed on one side of the transverse connecting arm group, and a second sub-support arm 623 is disposed on the other side. Exemplarily, along a direction perpendicular to the transverse guide member 64, at least two transverse connecting arms 621 are disposed at intervals.

[0505] In some achievable embodiments, at least a portion of the drive unit is located between the two first sub-support arms 622. At least a portion of the drive unit may 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 a small space.

[0506] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be inserted into the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0507] Fig.17 The partial structure of the cutting system 20 is schematically shown. Fig.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 transverse guide 64 and a transverse drive assembly 70.

[0508] Fig.17 In the embodiment, the cutting device 40 is in the central position. Fig.17 As shown, the number of the support arms 62 and the transverse guide members 64 are both two. The two support arms 62 are arranged at intervals along the vertical direction Y. Each support arm 62 includes two sub-support arms 620. One end of the sub-support arm 620 is rotatably connected to the support 61. The other end of the sub-support arm 620 is rotatably connected to the corresponding transverse guide member 64. Along the length direction of the transverse guide member 64, the two sub-support arms 620 of each support arm 62 are arranged at intervals. An accommodating portion 62a is formed between the two sub-support arms 620. The sub-support arm 620 located above is relatively fixed to the sub-support arm 620 located below; and / or, the two transverse guide members 64 are relatively fixed. The cutting device 40 is connected to at least one transverse guide member 64. The cutting device 40 includes a cutter disc 42. Exemplarily, the cutting device 40 is connected to the two transverse guide members 64. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse guide member 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 height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0509] 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 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 length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0510] The two support arms 62 are relatively fixed; and / or the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby further improving the connection stability among the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0511] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0512] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be inserted into the accommodating portion 62a to effectively utilize the space between the two sub-support arms 620, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0513] See also Fig.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 at least two support arms 62, at least two transverse guide members 64, a support 61, a drive unit and a transverse drive assembly 70.

[0514] Fig.17 In the embodiment, the cutting device 40 is in the central position. Fig.17 As shown, the number of transverse guide members 64 is consistent with the number of support arms 62 and corresponds one to one. Each support arm 62 is arranged at intervals along the vertical direction Y. Each support arm 62 includes two sub-support arms 620. Along the length direction of the transverse guide member 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 rotatably connected to the support 61. The other end of each sub-support arm 620 is rotatably connected to the corresponding transverse guide member 64.

[0515] The upper sub-support arm 620 and the lower sub-support arm 620 are relatively fixed, and / or the two transverse guide members 64 are relatively fixed.

[0516] The cutting device 40 is slidably connected to at least one transverse guide 64. Exemplarily, the cutting device 40 is slidably connected to two transverse guides 64. The cutting device 40 includes a blade disc 42. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse 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. Adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state in which the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0517] In some practicable embodiments, the number of each of the support arms 62 and the transverse guide member 64 is two. The two support arms 62 are spaced apart in the vertical direction Y.

[0518] 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 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 slide on the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0519] Each support arm 62 is relatively fixed; and / or each transverse guide member 64 is relatively fixed. A connecting rod structure relationship can be formed between the support 61, each support arm 62, and each transverse guide member 64, so as to further improve the connection stability between the support 61, the support arm 62, and the transverse guide member 64 and the position stability of the cutting device 40 during the rotation process relative to the support arm 62.

[0520] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0521] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be inserted into the accommodating portion 62a to effectively utilize the space between the two sub-support arms 620, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0522] In some achievable embodiments, among the support arms 62 , the uppermost support arm 62 is connected to the driving unit.

[0523] In some achievable embodiments, at least two transverse guide members 64 are slidably connected to the cutting device 40 , respectively.

[0524] At least two transverse guides 64 are slidably connected to the cutting device 40. A connecting rod structure relationship can be formed between the support 61, each support arm 62, each transverse guide 64 and the cutting device 40, which is conducive to further improving the connection stability between the support 61, the support arm 62, the transverse guide 64 and the cutting device 40. Each transverse guide 64 is connected to the cutting device 40, and the two transverse guides 64 are relatively fixed through the cutting device 40, eliminating the need for additional fixings for connecting each transverse guide 64 or each support arm 62, saving the cost of accessories. At the same time, based on the result of the connecting rod structure relationship, it is ensured that the angle between the cutter disc 42 and the ground remains consistent during the height adjustment of the cutting device 40.

[0525] In some achievable embodiments, at least two support arms 62 are connected to each other, and / or at least two transverse guide members 64 are connected to each other.

[0526] The support arms 62 are connected to each other. The support arms 62 are connected by additional connecting parts. A connecting rod structure relationship can be formed between the support 61, the support arms 62, the transverse guide members 64 and the connecting parts, which is conducive to further improving the connection stability between the support 61, the support arms 62, the transverse guide members 64 and the connecting parts, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0527] Fig.18 The partial structure of the cutting system 20 is schematically shown. Fig.18 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 transverse guide members 64, a support 61, a drive unit and a transverse drive assembly 70.

[0528] The number of transverse guide members 64 is consistent with the number of support arms 62 and is arranged one by one. The support arms 62 are arranged at intervals along the vertical direction Y. Each 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 arranged on one side of the transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The ends of the first sub-support arm 622 of each support arm 62 are rotatably connected to the support 61 respectively. The ends of the second sub-support arm 623 of each support arm 62 are rotatably connected to the corresponding transverse guide member 64 respectively.

[0529] Each support arm 62 is relatively fixed; and / or each transverse guide member 64 is relatively fixed. The cutting device 40 is connected to at least one transverse guide member 64. The cutting device 40 includes a blade disc 42. The transverse drive assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse guide member 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 height of the cutting device 40 above the ground. In the first state, the rotation speed of the blade disc 42 is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0530] 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 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 length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0531] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0532] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0533] See also Fig.18 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 transverse guide members 64, a support 61, a drive unit and a transverse drive assembly 70.

[0534] The number of transverse guides 64 is consistent with the number of support arms 62 and corresponds one to one. The support arms 62 are arranged at intervals along the vertical direction Y. Each support arm 62 includes a transverse 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 transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The ends of the first sub-support arm 622 of each support arm 62 are rotatably connected to the support 61 respectively. The transverse guide 64 is rotatably connected to the ends of the second sub-support arm 623 of the corresponding support arm 62.

[0535] The support arms 62 are relatively fixed. And / or, the transverse guide members 64 are relatively fixed.

[0536] The cutting device 40 is slidably connected to at least one transverse guide 64. The cutting device 40 includes a blade disc 42. The transverse 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 transverse 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 height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0537] 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 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 slide on the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0538] Each support arm 62 is relatively fixed; and / or each transverse guide member 64 is relatively fixed. A connecting rod structure relationship can be formed between the support 61, each support arm 62, and each transverse guide member 64, so as to further improve the connection stability between the support 61, the support arm 62, and the transverse guide member 64 and the position stability of the cutting device 40 during the rotation process relative to the support arm 62.

[0539] In some achievable embodiments, the position adjustment device 50 includes two support arms 62 and two transverse guides 64. The two support arms 62 are relatively fixed; and / or the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby further improving the connection stability between the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0540] In some achievable embodiments, in each support arm 62 , there are two first sub-support arms 622 . The two first sub-support arms 622 are spaced apart along the length direction of the transverse guide member 64 . At least a portion of the drive unit is located between the two first sub-support arms 622 .

[0541] In some achievable embodiments, at least a portion of the drive unit is located between the two first sub-support arms 622. At least a portion of the drive unit can be located between the two first sub-support arms 622 of the same support arm 62 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 a small space.

[0542] In some achievable embodiments, in each support arm 62, there are two second sub-support arms 623. The two second sub-support arms 623 are arranged at intervals along the length direction of the transverse guide member 64. An accommodating portion 62a is formed between the two second sub-support arms 623.

[0543] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be inserted into the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0544] In some achievable embodiments, the number of the supports 61 is two. The two supports 61 are spaced apart along the length direction of the transverse guide member 64. The number of the first sub-support arms 622 is two. The ends of the two first sub-support arms 622 are rotatably connected to the supports 61, respectively. At least a portion 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.

[0545] See also Figure 4As 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 transverse guide 64 and a transverse drive assembly 70.

[0546] The number of the support arms 62 and the transverse guide members 64 are both two. The two support arms 62 are arranged at intervals along the vertical direction Y. Each 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 arranged on one side of the transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side. The ends of the first sub-support arm 622 of each support arm 62 are rotatably connected to the support 61 respectively. The two transverse guide members 64 are rotatably connected to the ends of the second sub-support arms 623 of the two support arms 62 respectively. The two support arms 62 are relatively fixed; and / or, the two transverse guide members 64 are relatively fixed. The cutting device 40 is connected to at least one transverse guide member 64. The cutting device 40 includes a cutter disc 42. The transverse 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 transverse guide member 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 height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0547] In each support arm 62 , there are two first sub-support arms 622 . The two first sub-support arms 622 are arranged at intervals along the length direction of the transverse guide member 64 . At least a part of the driving unit is located between the two first sub-support arms 622 .

[0548] In each support arm 62, there are two second sub-support arms 623. The two second sub-support arms 623 are arranged at intervals along the length direction of the transverse guide member 64. An accommodating portion 62a is formed between the two second sub-support arms 623.

[0549] 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 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 length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0550] The two support arms 62 are relatively fixed; and / or the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby further improving the connection stability among the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0551] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0552] The position adjustment device 50 can be used to adjust the cutting device 40 in the height direction and the horizontal direction. Based on this, the position adjustment device 50 is used while the movement direction and movement path of the lawn mower 10 remain unchanged, so that the lawn mower 10 can obtain a larger mowing range and improve the working efficiency of the lawn mower 10.

[0553] A portion of the driving unit may 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 a small space.

[0554] When the position adjustment device 50 is applied to the lawn mower 10, a part of the cutting device 40 can be inserted into the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improving the compactness of the structure, reducing the overall volume, and occupying less space.

[0555] In some achievable embodiments, the two transverse guides 64 are slidably connected to the cutting device 40. A four-bar linkage structure may be formed between the support 61, the two support arms 62, the two transverse guides 64 and the cutting device 40, thereby further improving the connection stability among the support 61, the support arms 62, the transverse guides 64 and the cutting device 40. The two transverse guides 64 are respectively connected to the cutting device 40, and the two transverse guides 64 are relatively fixed through the cutting device 40, eliminating the need for additional fixings for connecting the two transverse guides 64 or the two support arms 62, thereby saving the cost of accessories.

[0556] In some practicable embodiments, there are two supports 61. The two supports 61 are spaced apart along the length direction of the transverse guide member 64. The ends of the two first sub-support arms 622 are rotatably connected to the supports 61. At least a portion 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.

[0557] In some possible implementations, see Fig.17 As shown, the transverse guide member 64 includes a first end 641 and a second end 642. The first end 641 and the second end 642 are 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.

[0558] The cutting device 40 moves between the ends of the transverse guide 64, further increasing the horizontal adjustment range of the cutting device 40. Based on this, the lawn mower 10 can obtain a larger mowing range without changing the moving direction and moving path of the lawn mower 10, thereby improving the working efficiency of the lawn mower 10.

[0559] Fig.19 The partial structure of the cutting system 20 is schematically shown. Fig.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 a support arm 62, a support 61, a drive unit, a transverse guide 64 and a transverse drive assembly 70.

[0560] The number of the support arms 62 and the number of the transverse guide members 64 are both two. The two support arms 62 are arranged at intervals along the vertical direction Y. Each support arm 62 includes two sub-support arms 620. One end of the sub-support arm 620 is rotatably connected to the support. The other end of the sub-support arm 620 is rotatably connected to the corresponding transverse guide member 64. Along the length direction of the transverse guide member 64, the two sub-support arms 620 of each support arm 62 are arranged at intervals. An accommodating portion 62a is formed between the two sub-support arms 620. The sub-support arm 620 located above is relatively fixed to the sub-support arm 620 located below; and / or, the two transverse guide members 64 are relatively fixed. The two sub-support arms 620 located above are connected by a transverse connecting arm 621. The cutting device 40 is connected to at least one transverse guide member 64. The cutting device 40 includes a cutter disc 42. The transverse 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 transverse guide member 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 height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0561] 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 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 length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0562] The two support arms 62 are relatively fixed; and / or the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby further improving the connection stability among the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0563] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0564] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0565] In some practicable ways, the transverse connecting arm 621 is connected to the driving unit. By applying torque to the transverse connecting arm 621, the sub-support arm 620 can be driven to rotate relative to the support, and the sub-support arm 620 drives the driver to move vertically. The transverse connecting arm 621 is located between the two sub-support arms 620 as a force-bearing structure, which is conducive to improving the overall structural compactness of the support arm 62 and taking up less space.

[0566] In some achievable embodiments, there are two supports 61. The two supports 61 are spaced apart along the length direction of the transverse guide 64. The ends of the two sub-support arms 620 of each support arm 62 are rotatably connected to the supports 61. A part of the drive unit is located between the two supports 61.

[0567] At least a portion 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 compactness of the overall structure of the position adjustment device, reducing the overall volume, and occupying less space.

[0568] See also Fig.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 transverse guide members 64, a support 61, a drive unit and a transverse drive assembly 70.

[0569] The number of transverse guide members 64 is consistent with the number of support arms 62 and corresponds one to one. Each support arm 62 is arranged at intervals along the vertical direction Y. Each support arm 62 includes two sub-support arms 620. Along the length direction of the transverse guide member 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 rotatably connected to a support. The other end of each sub-support arm 620 is rotatably connected to the corresponding transverse guide member 64.

[0570] Each sub-support arm 620 is relatively fixed. The upper sub-support arm 620 is relatively fixed to the lower sub-support arm 620. And / or, each transverse guide member 64 is relatively fixed.

[0571] The two uppermost sub-support arms 620 are connected by a transverse connecting arm 621. The cutting device 40 is slidably connected to at least one transverse guide 64. The cutting device includes a blade disc 42. The transverse 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 transverse guide 64. The drive unit is used to drive all the support arms 62 to rotate relative to the support 61 to adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0572] 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 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 slide on the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64. The method of driving the cutting device 40 to move horizontally by the transverse drive assembly 70 is conducive to realizing the automatic adjustment of the position of the cutting device 40 and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0573] Each support arm 62 is relatively fixed. And / or each transverse guide member 64 is relatively fixed. A connecting rod structure relationship can be formed between the support 61, each support arm 62, and each transverse guide member 64, so as to further improve the connection stability between the support 61, the support arm 62, and the transverse guide member 64 and the position stability of the cutting device 40 during the rotation process relative to the support arm 62.

[0574] In some achievable embodiments, at least one of the transverse connecting arms 621 of the support arm 62 is connected to the drive unit. By applying torque to the transverse connecting arm 621, the sub-support arm 620 can be driven to rotate relative to the support, and the sub-support arm 620 drives the driver to move vertically. The transverse connecting arm 621 is located between the two sub-support arms 620 as a force-bearing structure, which is conducive to improving the overall structural compactness of the support arm 62 and taking up less space.

[0575] The embodiment of the present application also 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 blade disc 42. The blade disc 42 is connected to the output end of the driver 41. The driver 41 is used to drive the rotation. The blade disc 42 is used to cut grass.

[0576] 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 the center position and the 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 height of the cutting device 40 above the ground.

[0577] 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 executing the lateral movement action is the fifth state, and the rotation speed of the cutter disc 42 in the third state is greater than or equal to the rotation speed of the cutter disc 42 in the fourth state.

[0578] When the rotation speed of the blade disc 42 in the fourth state is greater than the rotation speed of the blade disc 42 in the fifth state, the rotation speed of the blade disc 42 when the cutting device 40 performs the lateral movement action is less than the rotation speed of the blade disc 42 when the cutting device 40 is working. On the one hand, the interference caused by the high-speed rotation of the blade disc 42 on the lateral movement of the cutting device 40 can be reduced, and the shaking of the cutting device 40 during the lateral movement process can be effectively reduced, thereby improving the stability of the movement process of the cutting device 40; on the other hand, the resistance encountered by the cutting device 40 during the lateral movement process can be reduced, thereby saving energy consumption. When the rotation speed of the blade disc 42 in the fourth state is equal to the rotation speed of the blade disc 42 in the fifth state, when the cutting device 40 performs the lateral movement action, the rotation speed of the blade disc 42 is consistent with the rotation speed when the mowing work is performed. On the one hand, the speed-up and speed-down actions of the cutting device 40 can be reduced, and the speed of the position adjustment of the cutting device 40 can be increased, thereby improving the working efficiency of the lawn mower 10; on the other hand, the speed-up and speed-down actions of the cutting device 40 are reduced, which can reduce the load of the motor of the cutting device 40 and increase the service life of the motor.

[0579] In addition, the state in which the driver 41 performs height adjustment is the sixth state, and the rotation speed of the cutter disc 42 in the fourth state is greater than or equal to the rotation speed of the cutter disc 41 in the sixth state.

[0580] When the rotation speed of the blade disc 42 in the fourth state is greater than the rotation speed of the blade disc 42 in the sixth state, the rotation speed of the blade disc 42 when the driver 41 performs the height adjustment action is less than the rotation speed of the blade disc 42 when the driver 41 is started. On the one hand, the interference caused by the high-speed rotation of the blade disc 42 on the movement of the driver 41 can be reduced, and the shaking of the cutting device 40 during the movement process can be effectively reduced, and the stability of the cutting device 40 during the movement process can be improved; on the other hand, the resistance encountered during the movement of the driver 41 can be reduced, saving energy consumption. When the rotation speed of the blade disc 42 in the fourth state is equal to the rotation speed of the blade disc 42 in the sixth state, when the driver 41 performs the height adjustment action, the rotation speed of the blade disc 42 is consistent with the rotation speed of the blade disc 42 during the mowing work. On the one hand, the speed-up and speed-down actions of the driver 41 can be reduced, and the speed of the position adjustment of the cutting device 40 can be increased, thereby improving the working efficiency of the lawn mower 10; on the other hand, the speed-up and speed-down actions of the driver 41 are reduced, which can reduce the load of the motor and increase the service life of the motor.

[0581] In addition, the state in which the driver 41 performs lateral movement is the fifth state, and the rotation speed of the cutter head 42 is 0 in the fifth state.

[0582] In addition, the state in which the driver 41 performs the height adjustment action is the sixth state, and the rotation speed of the cutter head 42 is 0 in the sixth state.

[0583] In addition, the rotation speed of the cutter disc 42 in the fifth state is equal to the rotation speed of the cutter disc 42 in the sixth state.

[0584] In addition, the cutting device 40 of this embodiment further includes a cutter cover 43. The cutter cover 43 is connected to the driver 41. Along the vertical direction Y, the cutter 42 is arranged below the cutter cover 43.

[0585] 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 center 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 close to the lawn boundary, which is helpful to avoid that too large an area of ​​uncut lawn remains at the lawn boundary. At the same time, the lawn mower 10 protects the blade 42 through the blade cover 43, and there is no need to set up an additional bottom protective plate. The blade cover 43 of the lawn mower 10 will not overwhelm the lawn, which is helpful to improve the cutting efficiency and cutting effect.

[0586] In addition, the position adjustment device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is located at the side cutting position, along the vertical direction Y, the second lower edge 43a of the blade cover 43 can be lower than the first lower edge 311 of the side skirt 31, and the second lower edge 43a of the blade cover 43 can be lower than the blade 42. There is a large safety distance between the second lower edge 43a of the blade cover 43 and the blade 42. When the lawn mower 10 is being carried, the palm of the operator can be placed on the side skirt 31, and the fingertips of the fingers can be buckled inside the blade cover 43. Under the protective effect of the blade cover 43, most of the operator's fingers are located outside the blade cover 43, so that the operator's fingers are not easy to touch the blade 42. At the same time, the second lower edge 43a of the blade cover 43 is lower than the blade 42, so that when the operator's fingers bypass the second lower edge 43a of the blade cover 43 and buckle inside the blade cover 43, the fingertips of the fingers are not easy to touch the blade 42.

[0587] 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 close to the lawn boundary and improve 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 located at the edge cutting position can meet the safety requirements for the use of the lawn mower 10 and will not cause injuries to people or animals.

[0588] In some achievable embodiments, the blade cover 43 has a second lower edge 43a. The blade 42 includes a blade 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 blade cover 43 is L1 (see Figure 2 ). 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 blade 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 blade cover 43 refers to the minimum value of all vertical distances between different positions of the lower surface of the blade 421 and different positions of the second lower edge 43a of the blade cover 43.

[0589] The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the blade cover 43, the greater the distance between the operator's fingers that are hooked into the blade cover 43 and the blade 42 during the process of carrying the lawn mower 10, and the less likely the operator's fingers will touch the blade 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 blade 42 during the process of carrying.

[0590] In some achievable embodiments, the blade cover 43 has a second lower edge 43a. The blade 42 includes a blade 421. Along the vertical direction Y, a maximum vertical distance L3 between the lower surface of the blade 421 and the second lower edge 43a of the blade cover 43 is less than or equal to 15 mm. The maximum vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the blade cover 43 refers to the maximum value of all vertical distances between different positions of the lower surface of the blade 421 and different positions of the second lower edge 43a of the blade cover 43.

[0591] When the height of the cutter disc 42 is constant, the greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter disc cover 43, the smaller the distance between the second lower edge 43a of the cutter disc cover 43 and the ground, and the worse the obstacle crossing performance of the lawn mower 10.

[0592] In some achievable embodiments, the height adjustment assembly 60 includes a support arm 62, a drive unit, a support 61, and a transverse guide 64. The support arm 62 is rotatably connected to the support 61. The transverse 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 transverse guide 64. The transverse guide 64 is used to be slidably connected to the cutting device 40. The cutting device 40 slides relative to the transverse guide 64 so that the cutting device 40 moves in the length direction of the transverse guide 64.

[0593] When the driving 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 transverse guide member 64, thereby adjusting the transverse position of the cutting device 40.

[0594] The mounting structure in which the support arm 62 and the transverse guide member 64 are interconnected can realize the position adjustment of the cutting device 40 while reducing the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body, which helps to realize the intelligence and miniaturization of the lawn mower 10.

[0595] The cutting device 40 can be adjusted in height and horizontal direction by the position adjustment device 50. Based on this, when the motion direction and motion path of the lawn mower 10 remain unchanged, the above-mentioned position adjustment device 50 is used to enable the lawn mower 10 to obtain a larger mowing range, thereby improving the working efficiency of the lawn mower 10.

[0596] The connection between the driver 41 and the support arm 62 through the transverse guide member 64 is conducive to reducing the design difficulty of the connection structure between the driver 41 and the support arm 62 and the difficulty of disassembly and assembly between the driver 41 and the support arm 62, thereby reducing processing costs and maintenance costs.

[0597] In some achievable embodiments, the number of each of the support arms 62 and the transverse guide member 64 is two. The two support arms 62 are spaced apart along the vertical direction Y. One end of the two support arms 62 is rotatably connected to the support 61. The other ends of the two support arms 62 are rotatably connected to the corresponding transverse guide member 64. The two support arms 62 are relatively fixed; and / or, the two transverse guide members 64 are relatively fixed. The cutting device 40 is connected to at least one transverse guide member 64. Exemplarily, the cutting device 40 is slidably connected to at least one transverse guide member 64. At least one support arm 62 is connected to the drive unit.

[0598] The two support arms 62 are relatively fixed; and / or the two transverse guides 64 are relatively fixed. A four-bar linkage structure can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby further improving the connection stability among the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during the rotation process relative to the support arms 62.

[0599] The embodiment of the present application provides a lawn mower 10 , including a body 30 and a position adjustment device 50 .

[0600] 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 transverse guide 64.

[0601] 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 transverse guide 64. The transverse guide 64 includes a first end 641 and a second end 642 along the 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 transverse guide 64. The cutting device 40 includes a blade disc 42. The cutting device 40 performs a moving action between the first end 641 and the second end 642 of the transverse guide 64 under the action of the driving force. 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 height of the cutting device 40 above the ground. In the first state, the rotation speed of the blade disc 42 is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0602] The lawn mower 10 of 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 of the cutting device 40 and the 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 when the motion path of the lawn mower 10 remains unchanged, the mowing range of the lawn mower 10 is expanded, thereby improving the mowing efficiency.

[0603] The first end 641 of the transverse 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 transverse 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 transverse 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 transverse guide 64, the adjustment of different cutting positions in the same path of the lawn mower 10 is achieved.

[0604] The embodiment of the present application provides a lawn mower 10 , including a body 30 and a position adjustment device 50 .

[0605] 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, a transverse guide 64 and a transverse drive assembly 70.

[0606] 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 transverse guide 64. The transverse guide 64 includes a first end 641 and a second end 642 along the 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 transverse guide 64. The cutting device 40 includes a blade disc 42. The transverse 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 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 action to adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade disc 42 in the second state. The first state is a state where the moving action is completed and the cutting device 40 is started, and the second state is a state where the moving action is performed. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0607] The lawn mower 10 of 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 of the cutting device 40 and the 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 when the motion path of the lawn mower 10 remains unchanged, the mowing range of the lawn mower 10 is expanded, thereby improving the mowing efficiency.

[0608] The first end 641 of the transverse 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 transverse 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 transverse 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 transverse guide 64, the adjustment of different cutting positions in the same path of the lawn mower 10 is achieved.

[0609] The transverse drive assembly 70 drives the cutting device 40 to slide on the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64. The transverse drive assembly 70 drives the cutting device 40 to move transversely, which is conducive to realizing the automatic adjustment of the position of the cutting device 40, and improving the adjustment efficiency and adjustment accuracy of the position of the cutting device 40.

[0610] The embodiment of the present application provides a lawn mower 10 , including a body 30 and a position adjustment device 50 .

[0611] 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, a transverse guide 64 and a transverse drive assembly 70.

[0612] The number of the support arms 62 and the number of the transverse guide members 64 are both two. The two support arms 62 are arranged at intervals along the vertical direction Y. One end of the two support arms 62 can be rotatably connected to the support 61 respectively. The other ends of the two support arms 62 can be rotatably connected to the corresponding transverse guide members 64 respectively. The transverse guide member 64 includes a first end 641 and a second end 642 along the 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 transverse guide members 64 are relatively fixed. The cutting device 40 is slidably connected to at least one transverse guide member 64. The cutting device 40 includes a blade 42. The transverse 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 transverse guide member 64. The drive unit is used to drive the two support arms 62 to rotate relative to the support 61 to adjust the height of the cutting device 40 above the ground. The rotation speed of the blade disc 42 in the first state is greater than or equal to the rotation speed of the blade 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 executing the moving action. The cutting device 40 is used for mowing. The cutting device 40 is used for mowing.

[0613] The lawn mower 10 of 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 of the cutting device 40 and the 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 when the motion path of the lawn mower 10 remains unchanged, the mowing range of the lawn mower 10 is expanded, thereby improving the mowing efficiency.

[0614] The first end 641 of the transverse 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 transverse 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 transverse 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 transverse guide 64, the adjustment of different cutting positions in the same path of the lawn mower 10 is achieved.

[0615] The transverse drive assem...

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: Support arms, transverse guides; One end of the support arm is connected to the transverse guide member, and the cutting device is connected to the transverse guide member. The cutting device includes a cutter disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force. The rotation speed of the cutter disc in a first state is greater than or equal to the rotation speed of the cutter disc in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

2. The position adjustment device according to claim 1, characterized in that: The position adjustment device also includes a driving unit, which is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above 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 third state. The third state is the state for performing the height adjustment action.

3. The position adjustment device according to claim 2, characterized in that: In the third state, the rotation speed of the cutter disc is 0.

4. The position adjustment device according to claim 2, 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.

5. The position adjustment device according to claim 2, 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.

6. The position adjustment device according to claim 1, characterized in that: In the second state, the rotation speed of the cutter disc is 0.

7. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, the cutting device is connected to the transverse guide member, the cutting device includes a blade disc, and the cutting device moves along the length direction of the transverse guide member under the action of a driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. After the movement 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 there is no grass stuck.

8. The position adjustment device according to claim 7, 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.

9. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and the cutting device is connected to the transverse guide member. The cutting device moves along the length direction of the transverse guide member under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, and along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end.

10. The position adjustment device according to claim 9, 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.

11. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arms, supports, drive units and transverse guides; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide member. The cutting device is connected to the transverse guide member. The cutting device includes a cutter disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force. The driving unit is used to drive the support arm 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 the first state, the rotation speed of the cutter disc is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of executing the moving action.

12. The position adjustment device according to claim 11, 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.

13. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arms, supports, drive units, transverse guides and transverse drive assemblies; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. 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 in the length direction of the transverse guide. The drive unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. In the first state, the rotation speed of the cutter disc is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

14. The position adjustment device according to claim 13, characterized in that: 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 end of the first sub-support arm is rotatably connected to the support, the transverse guide member is rotatably connected to the end of the second sub-support arm, and the transverse connecting arm is connected to the driving unit.

15. The position adjustment device according to claim 13, 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.

16. 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. One end of the at least two support arms is rotatably connected to the support, and the other end of the at least two support arms is rotatably connected to the corresponding transverse guide member. 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, 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 in the length direction of the transverse guide. 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. In the first state, the rotation speed of the cutter disc is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

17. The position adjustment device according to claim 16, characterized in that: At least one of the at least two support arms 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 end of the first sub-support arm is rotatably connected to the support, the transverse guide member is rotatably connected to the end of the second sub-support arm, and the transverse connecting arm is connected to the driving unit.

18. The position adjustment device according to claim 17, characterized in that: Each of the support arms includes at least two transverse connecting arms, and 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.

19. The position adjustment device according to claim 16, 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.

20. The position adjustment device according to claim 19, characterized in that: The uppermost support arm is connected to the driving unit.

21. The position adjustment device according to claim 16, characterized in that: The at least two transverse guides are slidably connected to the cutting device respectively.

22. The position adjustment device according to claim 16, 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.

23. The position adjustment device according to claim 16, characterized in that: The support arm is rotatably connected to the support via a horizontal axis, and the support arm includes a first connection portion, and the transverse guide member is rotatably connected to the first connection portion.

24. The position adjustment device according to claim 23, characterized in that: The support arm includes a second connection portion, the driving unit is connected to the second connection portion, and the second connection portion is located between the first connection portion and the horizontal axis.

25. 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 one support arm, a support, a drive unit, a transverse guide, and a transverse drive assembly; The support arm comprises 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 end portion of the first sub-support arm is rotatably connected to the support, the transverse guide is rotatably connected to the end portion of the second sub-support arm, the cutting device is connected to the transverse guide, 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, the driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above 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 after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action; 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.

26. The position adjustment device according to claim 25, characterized in that: A portion of the driving unit is located between the two first supporting sub-arms.

27. The position adjustment device according to claim 25, characterized in that: Each of the support arms includes at least two transverse connecting arms, and 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.

28. The position adjustment device according to claim 25, 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.

29. 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 is arranged in a one-to-one correspondence. The at least two support arms are arranged at intervals in the vertical direction. Each of the support arms 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 ends of the first sub-support arm of each support arm are rotatably connected to the support, and the ends of the second sub-support arm of each support arm are rotatably connected to the corresponding transverse guide member. 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, 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 in the length direction of the transverse guide. 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. In the first state, the rotation speed of the cutter disc is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

30. The position adjustment device according to claim 29, characterized in that: Each of the support arms includes at least two transverse connecting arms, and 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.

31. The position adjustment device according to claim 29, 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.

32. The position adjustment device according to claim 31, characterized in that: The transverse connecting arm of the uppermost supporting arm is connected to the driving unit.

33. The position adjustment device according to claim 29, characterized in that: 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, and a part of the driving unit is located between the two first sub-support arms.

34. The position adjustment device according to claim 29, characterized in that: 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.

35. The position adjustment device according to claim 29, characterized in that: There are two supports, and in each support arm, there are two first sub-support arms. Along the length direction of the transverse guide member, the two supports are spaced apart, and the two first sub-support arms are spaced apart. The two first sub-support arms of the support arm are respectively rotatably connected to the two supports, and at least a part of the drive unit is located between the two supports.

36. The position adjustment device according to any one of claims 2-5 and 7-35, 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.

37. The position adjustment device according to any one of claims 1 to 35, 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.

38. The position adjustment device according to any one of claims 13 to 35, characterized in that: The transverse drive assembly includes a deflection cam, which is used to be connected to the cutting device and is used to drive the cutting device to slide on the transverse guide.

39. The position adjustment device according to any one of claims 13 to 35, characterized in that: 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 used to be connected to the cutting device, and the screw rod and the conversion member are used to drive the cutting device to slide relative to the transverse guide member.

40. The position adjustment device according to any one of claims 13 to 35, characterized in that: The transverse driving assembly includes a telescopic rod and a conversion piece, the telescopic rod is connected to the conversion piece, the conversion piece is used to be connected to the cutting device, and the telescopic rod and the conversion piece are used to drive the cutting device to slide relative to the transverse guide piece.

41. The position adjustment device according to any one of claims 11 to 35, characterized in that: The rotation speed of the cutter disc in the first state is greater than or equal to the state of the cutter disc in the third state, and the third state is a state for executing the height adjustment action.

42. The position adjustment device according to claim 41, characterized in that: In the second state, the rotation speed of the cutter disc is 0.

43. The position adjustment device according to claim 41, characterized in that: In the third state, the rotation speed of the cutter disc is 0.

44. The position adjustment device according to claim 41, 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.

45. A lawn mower, characterized in that: Comprising a position adjustment device as claimed in any one of claims 1 to 44.

46. ​​A lawn mower, characterized in that: include: body; A position adjustment device, used for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arms, transverse guides; One end of the support arm is connected to the transverse guide member, and there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a blade disc. The cutting device performs a moving action along the length direction of the transverse guide member under the action of a driving force. In a first state, the rotation speed of the blade disc is greater than or equal to the rotation speed of the blade disc in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

47. A lawn mower, characterized in that: include: body; A position adjustment device, used for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degree and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a blade disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force, and the driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. After the movement 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 there is no grass stuck.

48. A lawn mower, characterized in that: include: body; A position adjustment device, used for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degree and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device moves along the length direction of the transverse guide member under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, and along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end.

49. 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: Support arms, supports, drive units and transverse guides; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide member. There is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a blade disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground.

50. The lawn mower according to claim 49, 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.

51. 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: Support arms, supports, drive units, transverse guides and transverse drive assemblies; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide member. There is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a blade 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 support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground.

52. The lawn mower according to claim 51, 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.

53. 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, one end of the at least two support arms is rotatably connected to the support, and the other end of the at least two support arms is rotatably connected to the corresponding transverse guide member, and the length direction of the transverse guide member and the forward direction of the lawn mower form 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 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.

54. The lawn mower according to claim 53, 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.

55. A lawn mower, characterized in that: include: body; A position adjustment device, used for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: at least one support arm, a support, a drive unit, a transverse guide, and a transverse drive assembly; The support arm comprises 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 end of the first sub-support arm is rotatably connected to the support, the transverse guide is rotatably connected to the end of the second sub-support arm, the length direction of the transverse guide and the forward direction of the lawn mower form an included angle α, the included angle α is greater than 0 degrees and less than 180 degrees, the cutting device is connected to the transverse guide, the cutting device comprises a blade 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 driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above 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.

56. The lawn mower according to claim 55, 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.

57. A lawn mower, characterized in that: include: body; A position adjustment device, used for adjusting the position of a cutting device of a lawn mower, the position adjustment 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 is arranged in a one-to-one correspondence. The at least two support arms are arranged at intervals in the vertical direction. Each of the support arms 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 ends of the first sub-support arm of each support arm are rotatably connected to the support, and the ends of the second sub-support arm of each support arm are rotatably connected to the corresponding transverse guide member. There is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, 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 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.

58. The lawn mower according to claim 57, 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.

59. A lawn mower according to any one of claims 46 to 58, 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 direct projection of the fuselage toward the ground.

60. The lawn mower according to claim 59, characterized in that The first end of the transverse guide extends out of the orthographic projection of the fuselage toward the ground.

61. A lawn mower according to any one of claims 46 to 58, 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 toward the ground. The first end is close to the side edge of the orthographic projection of the fuselage toward the ground. 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.

62. A lawn mower according to any one of claims 46 to 58, characterized in that The cutting device comprises a cutter disc, the cutter 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 toward the ground, the first end is close to the side edge of the orthographic projection of the fuselage toward the ground, and 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 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.

63. A lawn mower according to any one of claims 46 to 58, characterized in that The angle α is between 85 degrees and 95 degrees.

64. The lawn mower according to claim 63, characterized in that The angle α is 90 degrees.

65. A lawn mower according to any one of claims 46 to 58, characterized in that The cutting device includes a cutter disc, and the rotation speed of the cutter disc in a first state is greater than or equal to the rotation speed of the cutter disc in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of executing the moving action.

66. A lawn mower according to any one of claims 47 to 58, characterized in that The cutting device comprises a cutter disc, wherein the rotation speed of the cutter disc in a first state is greater than or equal to the rotation speed of the cutter disc in a second state, wherein the first state is a state in which the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is executed; The rotation speed of the cutter disc in the first state is greater than or equal to the state of the cutter disc in the third state, and the third state is a state for executing the height adjustment action.

67. The lawn mower according to claim 66, characterized in that In the second state, the rotation speed of the cutter disc is 0.

68. The lawn mower according to claim 66, characterized in that In the third state, the rotation speed of the cutter disc is 0.

69. The lawn mower according to claim 66, 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.

70. 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, and the second lower edge is lower than the lower surface of the blade, and the blade is used for mowing grass.

71. The lawn mower according to claim 70, 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.

72. The lawn mower according to claim 70, 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.

73. The lawn mower according to claim 70, 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.

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