Cutting system and mower

Abstract

The utility model provides a cutting system and a mower. The cutting system comprises a cutting device and a position adjusting device. The position adjusting device comprises a supporting arm, a support, a driving unit, a transverse guide part, an elastic reset part and a shifting part. One end of the supporting arm is rotatably connected to the support. The other end of the supporting arm is rotationally connected with the transverse guiding piece. The cutting device is slidably connected to the transverse guide part. The elastic reset piece is arranged on the transverse guide piece. The driving unit is connected with the supporting arm. The driving unit comprises a stirring part. The shifting piece is rotatably connected to the support. And the shifting part is connected with the shifting piece. And the shifting piece is connected with the cutting device.

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 cutting system 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, lawns are usually cut and trimmed using lawn mowers. 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 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 cutting system and a lawn mower, which are beneficial to improving cutting efficiency and cutting effect.

[0005] A first aspect of an embodiment of the present application provides a cutting system for a lawn mower. The cutting system includes a cutting device and a position adjustment device. The position adjustment device includes a support arm, a support, a drive unit, a transverse guide, an elastic reset member and a toggle member. One end of the support arm is rotatably connected to the support. The other end of the support arm is rotatably connected to the transverse guide member. The cutting device is slidably connected to the transverse guide member. The elastic reset member is arranged on the transverse guide member. The drive unit is connected to the support arm. The drive unit includes a toggle part. The toggle member is rotatably connected to the support. The toggle part is connected to the toggle member. The toggle member is connected to the cutting device.

[0006] The driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device relative to the ground, and the toggle part is used to synchronously toggle the toggle member to rotate relative to the support. The toggle member is used to toggle the cutting device to move laterally relative to the transverse guide member and deform the elastic reset member.

[0007] When the cutting system of the embodiment of the present application is applied to a lawn mower, the position adjustment device can drive the cutting device to move laterally through the coordinated action of the toggle member and the elastic reset member, and adjust the relative position of the cutting device and the machine body, so that the cutting device can trim the area close to the lawn boundary, which is beneficial to avoid leaving too large an area of ​​uncut lawn at the lawn boundary, and is beneficial to improving the cutting efficiency and cutting effect.

[0008] In some achievable embodiments, the support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The drive unit is connected to the transverse connecting 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.

[0009] By applying torque to the transverse connecting arm, the support arm can be driven to rotate relative to the support, which is conducive to improving the overall structural compactness of the support arm and taking up less space. The end of the transverse guide member can be rotatably connected to the second sub-support arm, which effectively ensures the connection stability and reliability between the transverse guide member and the support arm.

[0010] In some achievable embodiments, each support arm includes at least two transverse connecting arms. The at least two transverse connecting arms constitute a transverse connecting arm group. 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.

[0011] 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.

[0012] In some achievable embodiments, the position adjustment device includes at least two support arms and at least two transverse guides. The number of the transverse guides 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. The other end of the at least two support arms is rotatably connected to the corresponding transverse guide. The cutting device is slidably connected to at least one transverse guide. An elastic reset member is provided on at least one of the transverse guides.

[0013] A connecting rod structure relationship can be formed between the support, the support arm, the transverse guide member and the cutting device, which is beneficial to further improve the connection stability among the support, the support arm, the transverse guide member and the cutting device.

[0014] An elastic reset member is provided on one of the transverse guide members. A relatively small number of elastic reset members can be used in the position adjustment device to meet the need of pushing the cutting device to move transversely, which is beneficial for reducing the number of parts used in the position adjustment device and reducing the difficulty of assembling various structural members in the position adjustment device. For example, an elastic reset member can be provided on the top transverse guide member.

[0015] Alternatively, each transverse guide member is provided with an elastic reset member. The elastic reset member provided on each transverse guide member can simultaneously apply forces to the cutting device at different positions, thereby facilitating the force balance of the cutting device during the transverse movement process on the transverse guide member, and improving the stability of the transverse movement process of the cutting device. In addition, in the event that the elastic reset member on any transverse guide member is damaged and fails, the other elastic reset members can still push the cutting device to move transversely, thereby facilitating the design redundancy and reliability of the position adjustment device.

[0016] In some achievable embodiments, the toggle member includes a first rod body and a second rod body. The toggle member is connected to the first rod body. The second rod body is connected to the cutting device. The toggle member is used to toggle the first rod body and the second rod body to rotate relative to the support. The second rod body is used to toggle the cutting device to move laterally relative to the transverse guide member. The overall structure of the toggle member is relatively simple, which is conducive to reducing the difficulty of processing and manufacturing the toggle member and the difficulty of assembling the toggle member.

[0017] In some achievable embodiments, the first rod body and the second rod body are rotatably connected to the support via the same vertical axis. The second rod body includes a first straight rod segment and a second straight rod segment. The first straight rod segment is connected to the first rod body. The first straight rod segment is rotatably connected to the vertical axis. The second straight rod segment is connected to the cutting device. The angle between the first straight rod segment and the second straight rod segment is an obtuse angle, and the second straight rod segment is inclined toward the driving unit relative to the first straight rod segment.

[0018] The structural design of the first straight rod segment and the second straight rod segment can make the length of the second rod body formed by the first straight rod segment and the second straight rod segment relatively long, which is beneficial to increase the lateral movement stroke of the cutting device when the cutting device is moved by the second rod body, and on the other hand, it is beneficial to increase the rotational torque of the second rod body acting on the cutting device, so that the second rod body can move the cutting device more effortlessly.

[0019] The structural design of the second rod body can help the second rod body avoid adjacent structural parts, thereby achieving reasonable use of space and ensuring that the position adjustment device has a compact structure.

[0020] In some achievable embodiments, the first rod body is a straight rod body, the angle between the first rod body and the first straight rod segment is an obtuse angle, and the first rod body is perpendicular to the second straight rod segment.

[0021] The structural design of the first rod body and the second rod body can help the first rod body and the second rod body avoid adjacent structural parts, thereby achieving reasonable use of space and ensuring that the position adjustment device has a compact structure.

[0022] In some practicable embodiments, the toggle portion and the second rod body are located on a side of the first rod body facing the transverse guide member.

[0023] The toggle part can limit the first rod to ensure that the first rod is always in contact with the toggle part, and can ensure that the first rod returns accurately. The toggle part can both toggle the first rod to rotate and limit the first rod, so there is no need to set an additional limit structure to limit the first rod, which is conducive to reducing the number of parts used and saving installation space.

[0024] In some practicable embodiments, the toggle portion abuts against the first rod.

[0025] When the toggle part toggles the first rod to rotate or releases the first rod, there is relative sliding between the first rod and the toggle part, which prevents the first rod from exerting resistance on the toggle part and affecting the smoothness of the rotation of the toggle part, and also prevents the toggle part from pulling the first rod and causing deformation or damage to the first rod.

[0026] In some achievable embodiments, the cutting device includes a driver and a cutter disc. The cutter disc is connected to an output shaft of the driver. The driver is slidably connected to a transverse guide. An elastic reset member is disposed on the transverse guide member, and the elastic reset member is connected to the driver. The second rod body abuts against a surface of the driver that faces away from the elastic reset member.

[0027] The second rod and the cutting device can slide relative to each other. When the cutting device moves vertically, there is relative sliding between the second rod and the cutting device, so as to avoid the second rod exerting resistance on the cutting device and affecting the stability of the vertical movement of the cutting device, and also to avoid the vertically moving cutting device pulling the second rod and causing deformation and damage to the second rod.

[0028] In some practicable embodiments, the cutting device further comprises a blade disc cover, the blade disc cover is connected to the driver, and the blade disc is arranged below the blade disc cover.

[0029] The blade cover protects the blade, effectively reduces the exposed area of ​​the blade, and is beneficial to improving the safety of the cutting device.

[0030] In some practicable embodiments, the cutter disc cover includes two flanges, the two flanges are arranged at intervals in the lateral direction of the lawn mower, and the cutter disc is arranged between the two flanges.

[0031] The two flanges can protect the cutter disc on both sides of the cutter disc, effectively reducing the exposed area of ​​the cutter disc, which is beneficial to improving the safety of the cutting device.

[0032] In some practicable embodiments, the cutter head cover has a bottom opening, the bottom opening avoids the cutter head, and the size of the bottom opening is larger than the diameter of the cutter head.

[0033] The bottom opening of the blade cover completely avoids the blade, so that in the vertical direction, the lower part of the blade is not blocked by the blade cover. The lawn can also enter the blade cover through the bottom opening and be cut by the blade inside the blade cover. Therefore, the blade cover will not overwhelm the lawn, ensuring that the blade can cut the lawn smoothly. Improve cutting efficiency and cutting effect.

[0034] In some achievable manners, the abutting area between the second rod body and the surface of the driver facing away from the elastic return element is the abutting surface.

[0035] The second rod body is in surface contact with the driver. The contact area between the second rod body and the driver is relatively large, which is beneficial to increase the force bearing area of ​​the second rod body on the driver and improve the stability of the second rod body driving the driver to move.

[0036] In some achievable embodiments, the cutting device further comprises a sliding connection member, which is connected to the driver and can be slidably connected to the transverse guide member.

[0037] The cutting device is slidably connected to the transverse guide member via a sliding connection, which is beneficial to reducing the complexity of the connection structure between the cutting device and the transverse guide member, while ensuring the smoothness of the sliding process of the cutting device relative to the transverse guide member.

[0038] In some practicable embodiments, the elastic reset member is a coil spring and is sleeved on the transverse guide member.

[0039] There is no need to provide an additional connection structure between the elastic reset member and the transverse guide member, which reduces the difficulty of processing the elastic reset member and the transverse guide member and reduces the difficulty of assembling the elastic reset member and the transverse guide member.

[0040] In some achievable embodiments, the transverse guide is a circular shaft, the cutting device comprises an axial hole, and the transverse guide is passed through the axial hole.

[0041] The transverse guide member passes through the cutting device, which is beneficial to improving the connection stability and reliability between the transverse guide member and the cutting device, and effectively avoiding the situation where the cutting device falls off or separates from the transverse guide member.

[0042] In some achievable embodiments, the driving unit includes a cam, the cam has a toggle portion, the cam includes a helical surface, and the support arm abuts against the helical surface.

[0043] 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.

[0044] In some achievable embodiments, the number of the support arms is at least two, and the support arms are arranged at intervals in the vertical direction, and the uppermost support arm is connected to the drive unit.

[0045] 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.

[0046] In some achievable embodiments, in at least one support arm, the number of the second sub-support arms is two. The two second sub-support arms of each support arm are arranged at intervals. The transverse guide member is rotatably connected to the two second sub-support arms of the corresponding support arm, and the elastic reset member is located between the second sub-support arm of the corresponding support arm and the cutting device.

[0047] The elastic reset member can reuse the space between the second sub-support arm and the cutting device, which is beneficial to improving the structural compactness of the position adjustment device. In addition, the second sub-support arm can form a limit constraint on the elastic reset member to prevent the elastic reset member from falling off the transverse guide member, and at the same time, there is no need to set an additional limit structure on the transverse guide member to limit the elastic reset member, which is beneficial to reducing the difficulty of processing the transverse guide member.

[0048] In some achievable embodiments, the support arm includes two second sub-support arms, a receiving portion is provided between the two second sub-support arms, and the cutting device is disposed in the receiving portion.

[0049] The cutting device is inserted into the receiving portion of the support arm, so that the cutting device can reuse the receiving portion of the support arm, so as to effectively improve the structural compactness of the cutting system, reduce the overall volume, and occupy a small space.

[0050] In some achievable embodiments, the cutting device includes a driver, a blade cover, and a blade. The blade is connected to an output shaft of the driver. The blade includes a blade. The blade cover is connected to the driver. The blade is disposed below the blade cover. The blade is connected to an output shaft of the driver. The support arm includes a receiving portion. The driver is disposed through the receiving portion.

[0051] The driver is inserted into the accommodating portion of the support arm, that is, the support arm is sleeved on the outside of the driver, so that the driver can reuse the accommodating portion of the support arm to effectively improve the structural compactness of the cutting system, reduce the overall volume, and occupy less space.

[0052] In some achievable embodiments, in at least one support arm, the number of the first sub-support arms is two, the two first sub-support arms of each support arm are arranged at intervals, and at least a portion of the drive unit is located between the two first sub-support arms.

[0053] At least a portion of the driving unit can be located between the two first sub-support arms to effectively utilize the space between the two first sub-support arms, which is beneficial to improving the compactness of the overall structure of the cutting system, reducing the overall volume, and occupying a small space.

[0054] A second aspect of an embodiment of the present application provides a lawn mower, which includes the above-mentioned cutting system.

[0055] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can drive the cutting device to move laterally through the coordinated action of the toggle member and the elastic reset member, and adjust the relative position of the cutting device and the machine body, so that the cutting device can mow the area close to the lawn boundary, which is helpful to avoid leaving too large an area of ​​uncut lawn at the lawn boundary.

[0056] A third aspect of an embodiment of the present application provides a lawn mower, comprising a body and a cutting system.

[0057] The cutting system includes a cutting device and a position adjustment device. The position adjustment device includes a support arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member. One end of the support arm is rotatably connected to the support, and the other end of the support arm is rotatably connected to the transverse guide member. The cutting device is slidably connected to the transverse guide member. The elastic reset member is arranged on the transverse guide member. The driving unit is connected to the support arm. The driving unit includes a toggle member. The toggle member is rotatably connected to the support. The toggle member is connected to the toggle member. The toggle member is connected to the cutting device. The driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device above the ground, and the toggle member is used to synchronously toggle the toggle member to rotate relative to the support. The toggle member is used to toggle the cutting device to move laterally relative to the transverse guide member and deform the elastic reset member.

[0058] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can drive the cutting device to move laterally through the coordinated action of the toggle member and the elastic reset member, and adjust the relative position of the cutting device and the machine body, so that the cutting device can mow the area close to the lawn boundary, which is helpful to avoid leaving too large an area of ​​uncut lawn at the lawn boundary.

[0059] In some achievable embodiments, the orthographic projection of the cutting system toward the ground is at least partially located within the orthographic projection of the fuselage toward the ground. The cutting device includes a blade. The toggle member is used to drive the cutting device to move laterally so that at least part of the blade moves outside the orthographic projection of the fuselage toward the ground.

[0060] When the cutting device moves laterally, at least part of the blade can be located outside the orthographic projection of the body toward the ground. The blade can be moved outside the body of the lawn mower, and when working, the grass in the lawn boundary area can be cut cleanly, avoiding lawn boundary residue during the cutting process, eliminating the need for manual secondary trimming, and improving the user experience.

[0061] In some practicable modes, a portion of the transverse guide extends beyond the orthographic projection of the fuselage toward the ground. Therefore, when the cutting device moves laterally relative to the transverse guide, at least part of the blade is located outside the orthographic projection of the fuselage toward the ground.

[0062] When the border of the lawn needs to be trimmed, the cutting device moves along the transverse guide to the outside of the 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 border.

[0063] In some feasible embodiments, the cutting system's orthographic projection toward the ground is located within the orthographic projection of the fuselage toward the ground, the cutting device includes a blade, a driving device drives the cutting device to move laterally, and the cutting device drives the blade to move laterally within the orthographic projection of the fuselage toward the ground, and the minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage toward the ground is greater than or equal to 0 mm and less than or equal to 50 mm.

[0064] When the width of the lawn edge that 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 body's positive projection 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 body, and no additional protective structure is required to meet safety requirements.

[0065] A fourth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a cutting system.

[0066] The fuselage includes a first lower edge. The cutting system is arranged on the fuselage. The cutting device includes a blade disc and a blade disc cover. The cutting system includes a cutting device and a position adjustment device. The position adjustment device includes a support arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member. One end of the support arm is rotatably connected to the support, and the other end of the support arm is rotatably connected to the transverse guide member. The cutting device is slidably connected to the transverse guide member. The elastic reset member is arranged on the transverse guide member. The driving unit is connected to the support arm. The driving unit includes a toggle part. The toggle member is rotatably connected to the support. The toggle part is connected to the toggle member. The toggle member is connected to the cutting device.

[0067] The driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device relative to the ground, and the toggle part is used to synchronously toggle the toggle member to rotate relative to the support. The toggle member is used to toggle the cutting device to move laterally relative to the transverse guide member, so that the cutting device switches between the center position and the side cutting position, and deforms the elastic reset member.

[0068] The cutting device comprises a cutter disc and a cutter disc cover. The cutter disc is located in the cutter disc cover. The cutter disc comprises a blade, and the cutter 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.

[0069] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can drive the cutting device to move laterally through the cooperation of the toggle member and the elastic reset member, so as to adjust the relative position of the cutting device and the body. Under the driving action of the position adjustment device, the cutting device can switch 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.

[0070] In addition, in the lawn mower of the embodiment of the present application, the position adjustment device can adjust the height of the cutting device, so that when the cutting device is in 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 lawn mower is transported in a safe manner, the operator's palm can be placed on the body, and the fingertips of the fingers can be buckled into the inside of the blade cover. Under the protective effect of the blade cover, most of the operator's fingers are located on the outside of 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 into the inside of the blade cover, the fingertips of the fingers are also difficult to touch the blade.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] In some achievable embodiments, the fuselage includes a side skirt panel, and when the cutting device is in the edge cutting position, a minimum horizontal distance between an 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] A fifth aspect of an embodiment of the present application provides a lawn mower, comprising a body and a cutting system.

[0081] The cutting system comprises a cutting device and a position adjusting device. The position adjusting device comprises a supporting arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member.

[0082] One end of the support arm is rotatably connected to the support, and the other end of the support arm is rotatably connected to the transverse guide. The cutting device is slidably connected to the transverse guide. The elastic reset member is arranged on 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 driving unit is connected to the support arm. The driving unit includes a toggle part. The toggle part is rotatably connected to the support. The toggle part is connected to the toggle part. The toggle part is connected to the cutting device.

[0083] The driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device relative to the ground, and the toggle part is used to synchronously toggle the toggle member to rotate relative to the support. The toggle member is used to toggle the cutting device to move laterally relative to the transverse guide member and deform the elastic reset member.

[0084] The lawn mower of the embodiment of the present application includes a position adjustment device and a cutting device. The position adjustment device can drive the cutting device to move laterally through the coordinated action of the toggle member and the elastic reset member, and adjust the relative position of the cutting device and the machine body, so that the cutting device can mow the area close to the lawn boundary, which is helpful to avoid leaving too large an area of ​​uncut lawn at the lawn boundary.

[0085] In some achievable embodiments, the orthographic projection of the cutting system 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, and 0.3W≤S*sinα≤0.7W. 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0091] 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.

[0092] Figure 1 A schematic diagram of a partial structure of a lawn mower according to an embodiment of the present application;

[0093] Figure 2 A partial side structural schematic diagram of a cutting system according to an embodiment of the present application;

[0094] Figure 3 A schematic diagram of a partial bottom view of the cutting system according to an embodiment of the present application;

[0095] Figure 4 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0096] Figure 5 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0097] Figure 6 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0098] Figure 7 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0099] Figure 8 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0100] Fig. 9 A schematic diagram of a partial structure of a position adjustment device according to an embodiment of the present application;

[0101] Fig.10 A schematic diagram of a partial structure of a lawn mower according to an embodiment of the present application;

[0102] Fig.11 A schematic diagram of a partial structure of a lawn mower according to an embodiment of the present application;

[0103] Fig.12 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0104] Fig.13 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0105] Fig.14 A schematic diagram of a partial structure of a cutting system according to an embodiment of the present application;

[0106] Fig.15 It is a schematic diagram of the partial structure of a cutting system according to an embodiment of the present application.

[0107] Description of reference numerals:

[0108] 10. Lawn mower;

[0109] 20. Cutting system;

[0110] 30. fuselage; 31. side skirt; 311. first lower edge;

[0111] 40. Cutting device;

[0112] 41. Driver;

[0113] 42. knife disc; 421. blade;

[0114] 43, blade cover; 43a, second lower edge; 431, flange;

[0115] 44. Sliding connector;

[0116] 50. Walking device;

[0117] 60. Position adjustment device;

[0118] 61. Support;

[0119] 62, support arm; 62a, accommodating portion; 62b, first connecting portion; 62c, second connecting portion;

[0120] 621, transverse connecting arm; 622, first sub-support arm; 623, second sub-support arm;

[0121] 63, cam; 631, spiral surface; 632, toggle portion; 632a, abutting curved surface; 632b, abutting flat surface;

[0122] 64. Transverse guide;

[0123] 65. Elastic reset member;

[0124] 66, a toggle member; 661, a first rod body; 661a, a receiving plane; 662, a second rod body; 6621, a first straight rod section; 6622, a second straight rod section;

[0125] 70. Horizontal axis;

[0126] X, horizontal;

[0127] Y, vertical direction;

[0128] Z, forward direction. DETAILED DESCRIPTION

[0129] 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. The lawn mower can walk on the lawn along a predetermined route during operation. During the walking process, 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 beauty and neatness.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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 includes a driver 41 and a cutter disc 42 for cutting the lawn. The cutter disc 42 includes a blade 421. The driver 41 is connected to the cutter disc 42. The driver 41 is used to drive the cutter disc 42 to rotate. The cutter disc 42 in a rotating state can cut the lawn to reduce the height of the lawn. The rotation axis of the cutter disc 42 is a vertical axis. Alternatively, there is a small angle between the rotation axis of the cutter disc 42 and the vertical direction Y. A predetermined distance is maintained between the cutter disc 42 and the ground, so that the cutter disc 42 can cut the lawn according to the mowing height requirement.

[0134] The lawn mower 10 further includes a body 30 and a walking device 50. The cutting device 40 may be disposed inside the body 30. For example, along the vertical direction Y, the cutting device 40 may be disposed 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.

[0135] The walking device 50 includes walking wheels or crawler tracks. The walking wheels or crawler tracks may be located outside the body 30. Along the lateral direction X of the lawn mower 10, walking wheels or crawler tracks are respectively provided 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 side and the right side of the lawn mower 10.

[0136] 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.

[0137] 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.

[0138] 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. The problem of motion interference must be considered when arranging the lateral position adjustment device and the height position adjustment device together inside the body of the lawn mower. 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 is required to be small in size and light in 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.

[0139] 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 meet the safety requirements for use. For example, when the cutting device is in the side cutting position, when people carry the lawn mower, their fingers cannot touch the blade disc to meet the safety requirements for use. In order to meet the safety requirements for use, 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 it is not easy for people's fingers to touch the blade disc to ensure the safety of use of the lawn mower. However, when the lawn mower is moving, the bottom guard plate will crush the lawn, causing the cutting device to fail to cut the crushed lawn, affecting the cutting efficiency and cutting effect.

[0140] 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. The lawn mower 10 does not need to be additionally provided with a bottom protection plate, which is conducive to improving cutting efficiency and cutting effect.

[0141] Figure 4 A partial structure of the cutting system 20 is schematically shown. Figure 5 A partial structure of the cutting system 20 is schematically shown. Figure 6 A partial structure of the cutting system 20 is schematically shown. Figure 4 , Figure 5 and Figure 6 In the figure, the cutting device 40 in the cutting system 20 is in the central position. Figure 7A partial structure of the cutting system 20 is schematically shown. Figure 7 In the embodiment, the cutting device 40 in the cutting system 20 is in the side cutting position. Figures 1 to 7 The lawn mower 10 according to the embodiment of the present application is described by way of example.

[0142] See also Figures 1 to 7 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.

[0143] 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 60. The cutting device 40 and the position adjustment device 60 are both disposed on the body 30. The cutting device 40 is connected to the position adjustment device 60. The position adjustment device 60 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 60 is used to drive the cutting device 40 to move vertically along the vertical direction Y. The position adjustment device 60 has the function of driving the cutting device 40 to move laterally and vertically.

[0144] In the embodiment of the present application, the position adjustment device 60 can drive the cutting device 40 to move horizontally and vertically at the same time.

[0145] The position adjustment device 60 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 switches between the center position of the fuselage 30 and the side cutting position of the fuselage 30. At the same time, the position adjustment device 60 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.

[0146] Exemplarily, when the position adjustment device 60 is used to drive the cutting device 40 to switch from the center position of the fuselage 30 to the side cutting position of the fuselage 30, the position adjustment device 60 is used to drive the cutting device 40 to move vertically so that the cutting device 40 is close to the ground, thereby reducing the height of the cutting device 40. When the position adjustment device 60 is used to drive the cutting device 40 to switch from the side cutting position of the fuselage 30 to the center position of the fuselage 30, the position adjustment device 60 is used to drive the cutting device 40 to move vertically so that the cutting device 40 is away from the ground, thereby increasing the height of the cutting device 40.

[0147] 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.

[0148] 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.

[0149] 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 60 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.

[0150] 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 60 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.

[0151] In some practicable embodiments, when the position adjustment device 60 drives the cutting device 40 to move, the cutting device 40 can be in a stopped working state or in a working state.

[0152] 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 structure 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.

[0153] In some practicable ways, lawns in different areas have different requirements for lawn mowing heights. The position adjustment device 60 drives the cutting device 40 to move vertically along the vertical direction Y, so as to flexibly adjust the height of the cutting device 40, thereby adapting to and meeting the differentiated requirements for lawn mowing heights.

[0154] See also Figures 1 to 3As 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 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 that avoids 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 completely avoids 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 smoothly cut the lawn. Improve cutting efficiency and cutting effect.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] In some possible implementations, see Figure 2 and Figure 3As 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.

[0159] 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 60. 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 60 can drive the cutting device 40 to move horizontally or vertically as a whole, that is, the position adjustment device 60 can drive the driver 41, the blade cover 43 and the blade 42 to move horizontally or vertically synchronously.

[0160] 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.

[0161] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can adjust the relative position of the cutting device 40 and the body 30. Under the driving action of the position adjustment device 60, the cutting device 40 can switch 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.

[0162] In addition, the position adjustment device 60 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 carried safely, 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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 60 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.

[0167] In some achievable embodiments, along the vertical direction Y, the vertical distance 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 millimeters (mm). The larger the vertical distance 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.

[0168] In some achievable embodiments, the minimum vertical distance between the blade disc 42 and the second lower edge 43a of the blade disc cover 43 along the vertical direction Y is in the range of 3 mm to 15 mm. For example, the vertical distance between the blade disc 42 and the second lower edge 43a of the blade disc cover 43 is 10 mm. The greater the vertical distance between the blade disc 42 and the second lower edge 43a of the blade disc cover 43, the greater the distance between the operator's finger that is buckled into the blade disc cover 43 and the blade disc 42, so that the operator's finger is less likely to contact the blade disc 42.

[0169] 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.

[0170] 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.

[0171] See also Figure 1 , Figure 4 and Figure 5 As shown, the position adjustment device 60 of the embodiment of the present application is arranged on the body 30. The cutting device 40 is connected to the position adjustment device 60. The position adjustment device 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, and the position adjustment device 60 is used to drive the cutting device 40 to move horizontally along the lawn mower 10 to switch the cutting device 40 between the center position and the side cutting position.

[0172] The position adjustment device 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.

[0173] The position adjustment device 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 via a horizontal axis 70. The support arm 62 may swing around the horizontal axis 70. The horizontal axis 70 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 70 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.

[0174] Exemplarily, a horizontal shaft 70 is provided on the support arm 62. A shaft hole is correspondingly provided on the support 61. The horizontal shaft 70 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 70 is correspondingly provided on the support 61. The shaft hole of the support arm 62 is sleeved on the horizontal shaft 70 of the support 61. Alternatively, shaft holes are provided on both the support arm 62 and the support 61. The additionally provided horizontal shaft 70 is inserted into the shaft holes on the support arm 62 and the support 61.

[0175] 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 70. 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 70. Since the distance between the cutting device 40 and the horizontal axis 70 is relatively far, when the support arm 62 rotates at a small angle relative to the horizontal axis 70, 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.

[0176] Exemplarily, the cutting device 40 is detachably connected to the first connecting portion 62 b of the supporting arm 62 .

[0177] Exemplarily, the driver 41 of the cutting device 40 is connected to the first connecting portion 62 b of the supporting arm 62 .

[0178] 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.

[0179] The position adjustment device 60 further includes a driving unit connected to the support arm 62. The driving unit can apply a force to the support arm 62 so that the support arm 62 can rotate around the horizontal axis 70 under the action of the rotational torque, so that the support arm 62 can drive the cutting device 40 to rise or fall.

[0180] 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 force. The drive unit can transmit force to the support arm 62 through the second connection portion 62c. There is a gap between the second connection portion 62c of the support arm 62 and the horizontal axis 70. Exemplarily, the second connection portion 62c is located on the side of the horizontal axis 70 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.

[0181] 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 70. 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 70.

[0182] In some possible implementations, see Figure 4 and Figure 5 As shown, the cutting device 40 is rotatably connected to the support arm 62. When the driving unit drives the cutting device 40 to move vertically, the cutting device 40 also rotates relative to the support arm 62, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes in height and does not swing relative to the horizontal plane.

[0183] 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 70. In the vertical direction Y, the housing portion 62a penetrates the support arm 62. The driver 41 of the cutting device 40 is connected to the support arm 62. The driver 41 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.

[0184] 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 the side of the transverse connecting arm 621 facing the support 61, and the second sub-support arm 623 is arranged on the other side facing away from the support 61. The second sub-support arm 623 is located on the side of the transverse connecting arm 621 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 70. The second sub-support arm 623 is provided with a first connecting portion 62b.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] In some examples, in one support arm 62, there are two first sub-support arms 622. 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. At least a portion of the drive unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is conducive to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying less space.

[0189] In some examples, in one support arm 62 , there are two second support sub-arms 623 , and the two second support sub-arms 623 are spaced apart from each other along the transverse direction X of the lawn mower 10 .

[0190] An accommodating portion 62a is formed between the two second sub-support arms 623. The cutting device 40 is arranged in the accommodating portion 62a. The cutting device 40 is arranged 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. Exemplarily, the driver 41 of the cutting device 40 is arranged between the two second sub-support arms 623. 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.

[0191] The two second sub-support arms 623 are spaced apart along the transverse direction X of the lawn mower 10 . The position adjustment device 60 can drive the driver 41 of the cutting device 40 to move transversely between the two second sub-support arms 623 .

[0192] 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 .

[0193] For some examples, see Figure 4 and Figure 5 As shown, there are two supports 61. 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 in one support arm 62 are rotatably connected to the two supports 61 respectively. At least a part of the drive unit is located between the two supports 61 to effectively utilize the space between the two supports 61, which is conducive to improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying a small space.

[0194] 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 .

[0195] For some examples, see Figure 4 and Figure 5As 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.

[0196] In some practicable embodiments, the position adjustment device 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 70, 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.

[0197] In some possible implementations, see Figure 4 and Figure 5 As shown, the position adjustment device 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 70. The two support arms 62 are rotatably connected to the driver 41 of the cutting device 40, respectively. Therefore, a four-bar linkage structure can be formed between the support 61, the two support arms 62, and the driver 41, which is conducive to 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.

[0198] 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.

[0199] 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.

[0200] In some examples, the two support arms 62 may have the same structural shape and size, which helps reduce processing costs.

[0201] 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.

[0202] In some possible implementations, see Figure 4 and Figure 5 As shown, the driving unit includes a driving component (not shown) and a cam 63. The cam 63 is connected to the output shaft of the driving component. The driving component is used to drive the cam 63 to rotate. The rotation axis of the cam 63 is a vertical axis.

[0203] The cam 63 has a helical surface 631. The helical surface 631 extends helically around the rotation axis. The support arm 62 abuts against the helical surface 631. Along the vertical direction Y, the second connection portion 62c of the support arm 62 is arranged above the helical surface 631 of the cam 63. The second connection portion 62c of the support arm 62 abuts against the helical surface 631 of the cam 63. When the 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 helical surface 631 of the cam 63, so that the support arm 62 as a whole swings relative to the support 61, thereby adjusting the height of the cutting device 40.

[0204] 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.

[0205] Exemplarily, there are two support arms 62. 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 located at 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.

[0206] 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.

[0207] Exemplarily, when the 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 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.

[0208] Exemplarily, when the 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.

[0209] 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, so as to improve the overall structural compactness of the position adjustment device 60, reduce the overall volume of the position adjustment device 60, and occupy a smaller space.

[0210] In some examples, the driving component includes a motor, and an output shaft of the motor is connected to the cam 63 .

[0211] In some possible implementations, the driving component may be disposed on the body 30 , so that the body 30 may carry the driving unit. Exemplarily, the driving component may be detachably connected to the body 30 .

[0212] See also Figure 2 , Figure 4 and Figure 5 As shown, the position adjustment device 60 of the embodiment of the present application further includes a transverse guide 64. The driving unit is used to drive the support arm 62 to rotate relative to the support 61, and the support arm 62 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 can be 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 switch between the center position and the side cutting position.

[0213] 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.

[0214] In some examples, the transverse guide 64 can be a circular shaft. The cutting device 40 includes 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 conducive to improving the connection stability and reliability between the transverse guide 64 and the cutting device 40, and effectively avoiding 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 conducive to avoiding 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.

[0215] 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.

[0216] For some examples, see Figure 2 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.

[0217] In some examples, the position adjustment device 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 via 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 relative to the support arm 62 around the horizontal axis.

[0218] During the vertical movement of the cutting device 40, the cutting device 40 and the transverse guide member 64 rotate synchronously relative to the support arm 62, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter disc 42 only changes in height and does not swing relative to the horizontal plane.

[0219] Exemplarily, the support arm 62 includes a first connection portion 62 b. A distance is provided between the first connection portion 62 b of the support arm 62 and the horizontal axis 70. The transverse guide member 64 is connected to the first connection portion 62 b of the support arm 62.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] In some examples, the support arm 62 includes a receiving portion 62a. The transverse guide member 64 is disposed corresponding to the receiving portion 62a of the support arm 62. The transverse guide member 64 and the support arm 62 are disposed 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 member 64.

[0224] Exemplarily, one 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 lateral direction X of the lawn mower 10. Both ends of a lateral guide 64 are rotatably connected to the two second sub-support arms 623 respectively. The two second sub-support arms 623, the lateral connecting arm 621 and the lateral guide 64 are arranged together around the receiving portion 62a, so that the two second sub-support arms 623, the lateral connecting arm 621 and the lateral guide 64 are in a "mouth"-shaped structure.

[0225] 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.

[0226] 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.

[0227] Exemplarily, the position adjustment device 60 can only drive the cutting device 40 to move laterally to one side of the lawn mower 10. For example, the position adjustment device 60 can only drive the cutting device 40 to move laterally to the right side of the lawn mower 10. Alternatively, the position adjustment device 60 can only drive the cutting device 40 to move laterally to the left side of the lawn mower 10. In some conceivable embodiments, see Figure 2 , Figure 4 and Figure 5 As shown, the position adjustment device 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 cutting device 40 is rotatably connected to the support arms 62 via the transverse guides 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 among 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] In some possible implementations, see Figure 2 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. 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.

[0233] 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.

[0234] See also Figures 4 to 7 As shown, the position adjustment device 60 of the embodiment of the present application further includes an elastic reset member 65 and a toggle member 66 .

[0235] The elastic reset member 65 itself has good elastic deformation performance. The elastic reset member 65 is arranged on the transverse guide member 64. The elastic reset member 65 is arranged between the support arm 62 and the cutting device 40. The driving unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66, that is, there is at least one point contact between the toggle portion 632 and the toggle member 66 to ensure that the toggle portion 632 and the toggle member 66 are in a state of mutual contact. The toggle member 66 is connected to the cutting device 40, that is, there is at least one point contact between the toggle member 66 and the cutting device 40 to ensure that the toggle member 66 and the cutting device 40 are in a state of mutual contact.

[0236] The driving unit is used to drive the support arm 62 to rotate relative to the support 61, so that the cutting device 40 moves vertically along the vertical direction Y, and the toggle portion 632 of the driving unit is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move horizontally relative to the horizontal guide member 64 and deform the elastic reset member 65. Under the interaction of the toggle portion 632, the toggle member 66 and the elastic reset member 65, the cutting device 40 moves horizontally relative to the horizontal guide member 64.

[0237] In the cutting system 20 of the embodiment of the present application, the driving unit can drive the support arm 62 and the transverse guide member 64 to rotate relative to the support 61 to drive the cutting device 40 to move vertically along the vertical direction Y, and the driving unit can also drive the toggle member 66 to rotate through the toggle portion 632 to synchronously drive the cutting device 40 to move along the transverse direction X of the lawn mower 10 through the toggle member 66, so that the position adjustment device 60 itself can have the function of driving the cutting device 40 to move horizontally and vertically at the same time.

[0238] Figure 8 FIG. 1 is a schematic diagram of a partial structure of a cutting system according to an embodiment of the present application. Figure 8 As shown, the embodiment of the present application provides a cutting system 20 for a lawn mower 10 . The cutting system 20 includes a cutting device 40 and a position adjustment device 60 .

[0239] The position adjustment device 60 includes a support arm 62, a support 61, a driving unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. 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 first sub-support arm 622 is rotatably connected to the support 61. The transverse connecting arm 621 is connected to the driving unit. The second sub-support arm 623 is located on the side of the transverse connecting arm 621 facing away from the support 61. The transverse guide 64 is rotatably connected to the second sub-support arm 623. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is arranged on the transverse guide 64, and the elastic reset member 65 is arranged between the second sub-support arm 623 and the cutting device 40. The driving unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40. The driving unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64 and deform the elastic reset member 65.

[0240] In some practicable embodiments, the number of the support arm 62 may be one, which is beneficial for reducing the number of parts used and for making the structure of the cutting system 20 itself compact.

[0241] When the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, the position adjustment device 60 can adjust the relative position of the cutting device 40 and the body 30. The cutting device 40 can trim the area near the lawn boundary, thereby helping to avoid leaving too large an area of ​​uncut lawn at the lawn boundary, and helping to improve the cutting efficiency and cutting effect.

[0242] In addition, when the cutting system 20 is applied to the lawn mower 10, the position adjustment device 60 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 carried and the safety requirements are met, 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 on the outside of 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.

[0243] Therefore, when the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, it can not only achieve effective cutting of the lawn close to the lawn boundary and improve the cutting efficiency and cutting effect, but also the position of the cutting device 40 can be adjusted through the position adjustment device 60 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.

[0244] In some possible implementations, see Figures 5 to 7 As shown, there are two support arms 62. The two support arms 52 are spaced apart in the vertical direction Y. The first sub-support arms 622 of the two support arms 62 are rotatably connected to the support 61 respectively. There are two transverse guide members 64. The two transverse guide members 64 are spaced apart in the vertical direction Y. The two transverse guide members 64 are rotatably connected to the second sub-support arms 623 of the two support arms 62 respectively. An elastic reset member 65 is provided on at least one of the two transverse guide members 64.

[0245] For example, an elastic reset member 65 is provided on one of the two transverse guide members 64. A relatively small number of elastic reset members 65 can be used in the position adjustment device 60 to meet the need of pushing the cutting device 40 to move transversely, which is beneficial for reducing the number of parts used in the position adjustment device 60 and reducing the difficulty of assembling each structural member in the position adjustment device 60. For example, an elastic reset member 65 can be provided on the upper transverse guide member 64.

[0246] Exemplarily, elastic reset members 65 are provided on both transverse guide members 64. The elastic reset members 65 provided on the two transverse guide members 64 can simultaneously apply forces to the cutting device 40 at different positions, thereby facilitating the force balance of the cutting device 40 during the transverse movement process on the transverse guide member 64, and improving the stability of the transverse movement process of the cutting device 40. In addition, in the event that the elastic reset member 65 on any transverse guide member 64 is damaged and fails, the other elastic reset member 65 can still push the cutting device 40 to move laterally, thereby facilitating the design redundancy and reliability of the position adjustment device 60.

[0247] In some achievable embodiments, the toggle member 66 includes a first rod 661 and a second rod 662. The toggle portion 632 of the driving unit is connected to the first rod 661, that is, there is at least one point contact between the toggle portion 632 and the first rod 661, so as to ensure that the toggle portion 632 and the first rod 661 are in a state of mutual contact. The second rod 662 is connected to the cutting device 40, that is, there is at least one point contact between the second rod 662 and the cutting device 40, so as to ensure that the second rod 662 and the cutting device 40 are in a state of mutual contact. The driving unit is used to drive the support arm 62 to rotate relative to the support 61, so that the cutting device 40 moves vertically along the vertical direction Y, and the toggle portion 632 of the driving unit is used to synchronously toggle the first rod 661 and the second rod 662 to rotate relative to the support 61. The second rod 662 is used to toggle the cutting device 40 to move horizontally relative to the horizontal guide member 64. The overall structure of the toggle member 66 is relatively simple, which helps to reduce the difficulty of processing, manufacturing and assembling the toggle member 66 .

[0248] In some possible implementations, see Figure 6 and Figure 7 As shown, when the toggle portion 632 of the driving unit rotates forward, the toggle portion 632 can toggle the toggle member 66 to rotate the toggle member 66. When the toggle member 66 toggle the cutting device 40 to move laterally on the transverse guide member 64, the cutting device 40 can squeeze the elastic reset member 65 to compress and deform the elastic reset member 65 and accumulate elastic potential energy.

[0249] When the toggle part 632 of the driving unit is reversed, the toggle part 632 releases the toggle member 66. The cutting device 40 releases the elastic reset member 65. The elastic reset member 65 releases elastic potential energy. The elastic reset member 65 can push the cutting device 40 to move laterally on the transverse guide member 64, and the cutting device 40 pushes the toggle member 66 to reset.

[0250] In some examples, along the sliding direction of the cutting device 40, the elastic reset member 65 and the second rod body 662 are respectively located on opposite sides of the cutting device 40. The sliding direction of the cutting device 40 may be the same as the lateral direction X of the lawn mower 10. Exemplarily, the elastic reset member 65 and the second rod body 662 are respectively located on opposite sides of the driver 41.

[0251] In some examples, in the initial state, the cutting device 40 in the cutting system 20 may be in the center position. When the toggle portion 632 of the driving unit rotates forward, the toggle portion 632 toggles the toggle member 66. The toggle member 66 toggles the cutting device 40 to move laterally on the transverse guide member 64, so that the cutting device 40 moves from the center position to the side cutting position. The cutting device 40 may squeeze the elastic reset member 65, so that the elastic reset member 65 is compressed and deformed and accumulates elastic potential energy.

[0252] When the toggle part 632 of the driving unit is reversed, the toggle part 632 releases the toggle member 66. The cutting device 40 releases the elastic reset member 65. The elastic reset member 65 releases elastic potential energy. The elastic reset member 65 pushes the cutting device 40 to move laterally on the transverse guide member 64, so that the cutting device 40 moves from the side cutting position to the center position. At the same time, the cutting device 40 pushes the toggle member 66 to reset.

[0253] In some feasible embodiments, when the position adjustment device 60 drives the cutting device 40 to switch from the center position of the fuselage 30 to the side cutting position of the fuselage 30, the driving unit in the position adjustment device 60 simultaneously drives the cutting device 40 to move downward so that the cutting device 40 is close to the ground, thereby lowering the height of the cutting device 40, so that when the cutting device 40 is in the side cutting position, the second lower edge 43a of the blade cover 43 can be lower than the first lower edge 311 of the side skirt panel 31.

[0254] When the position adjustment device 60 drives the cutting device 40 to switch from the edge cutting position of the fuselage 30 to the center position of the fuselage 30, the driving unit in the position adjustment device 60 simultaneously drives the cutting device 40 to move upward so that the cutting device 40 is away from the ground, thereby raising the height of the cutting device 40.

[0255] In some possible implementations, see Figure 6 and Figure 7As shown, the first rod body 661 and the second rod body 662 are connected. The rotation axis of the first rod body 661 and the second rod body 662 is a vertical axis. The rotation axis of the first rod body 661 coincides with the rotation axis of the second rod body 662. When the driving unit drives the support arm 62 to rotate relative to the support 61, the toggle portion 632 of the driving unit rotates synchronously. In some examples, the rotation axis of the toggle portion 632 is also a vertical axis. The rotation axis of the first rod body 661 and the rotation axis of the toggle portion 632 are parallel to each other. The rotation axis of the toggle portion 632 and the rotation axis of the support arm 62 are perpendicular to each other.

[0256] In some examples, the end of the first rod 661 away from the second rod 662 is connected to the toggle portion 632. A first connection is formed between the toggle portion 632 and the first rod 661. There is a distance between the first connection and the rotation axis of the first rod 661, so as to ensure that the toggle portion 632 can apply a torque to the first rod 661 to drive the first rod 661 to rotate around the rotation axis, and at the same time, the first rod 661 drives the second rod 662 to rotate around the rotation axis. The end of the second rod 662 away from the first rod 661 is connected to the cutting device 40. A second connection is formed between the second rod 662 and the cutting device 40. There is a distance between the second connection and the rotation axis of the second rod 662.

[0257] In some examples, the first rod body 661 and the second rod body 662 may be an integrally formed structure.

[0258] In some achievable embodiments, the toggle member 66 is rotatably connected to the support 61 via a vertical axis. The first rod body 661 and the second rod body 662 are rotatably connected to the support 61 via the same vertical axis. Exemplarily, the vertical axis is disposed on the support 61. An axis hole is disposed at the intersection of the first rod body 661 and the second rod body 662, and the vertical axis is plugged into the axis hole to achieve rotational fit.

[0259] In some achievable embodiments, there are two support arms 62. There is a spacing between the two support arms 62 along the vertical direction Y. The second rod body 662 of the toggle member 66 passes through the space between the two support arms 62 to reuse the space between the two support arms 62, which is beneficial to improving the compactness of the structure of the position adjustment device 60.

[0260] Fig. 9 The partial structure of the position adjustment device 60 is schematically shown. Fig. 9As shown, the second rod body 662 includes a first straight rod segment 6621 and a second straight rod segment 6622. The first straight rod segment 6621 is connected to the first rod body 661. The first straight rod segment 6621 is rotatably connected to the vertical axis. The second straight rod segment 6622 is connected to the cutting device 40. The angle between the first straight rod segment 6621 and the second straight rod segment 6622 is an obtuse angle, and the second straight rod segment 6622 is inclined toward the driving unit relative to the first straight rod segment 6621. The structural design of the second rod body 662 can help the second rod body 662 avoid adjacent structural members (such as the support 61), thereby achieving reasonable use of space and ensuring that the position adjustment device 60 has a compact structure.

[0261] The structural design of the first straight rod segment 6621 and the second straight rod segment 6622 can make the length of the second rod body 662 formed by the first straight rod segment 6621 and the second straight rod segment 6622 relatively long. On the one hand, it is beneficial to increase the lateral movement stroke of the cutting device 40 when the cutting device 40 is moved by the second rod body 662. On the other hand, it is beneficial to increase the rotational torque of the second rod body 662 acting on the cutting device 40, so that the second rod body 662 can move the cutting device 40 more effortlessly.

[0262] In some examples, the drive unit includes a cam 63. The support arm 62 includes two first sub-support arms 622 spaced apart from each other. Along the lateral direction X of the lawn mower 10, the orthographic projection of the vertical axis along the vertical direction Y is located between the orthographic projection of the first sub-support arm 622 along the vertical direction Y and the orthographic projection of the cam 63 along the vertical direction Y.

[0263] In some examples, the first rod body 661 is a straight rod body. The angle between the first rod body 661 and the first straight rod segment 6621 is an obtuse angle. The first rod body 661 is perpendicular to the second straight rod segment 6622.

[0264] The structural design of the first rod 661 and the second rod 662 can help the first rod 661 and the second rod 662 avoid adjacent structural parts (such as the support 61), thereby achieving reasonable use of space and ensuring that the position adjustment device 60 has a compact structure.

[0265] Exemplarily, the total length of the first rod body 661 is smaller than the total length of the second rod body 662 .

[0266] In some examples, the toggle portion 632 and the second rod 662 are located on the side of the first rod 661 facing the transverse guide 64. The toggle portion 632 can form a limit constraint on the first rod 661 to ensure that the first rod 661 always keeps in contact with the toggle portion 632, and at the same time can ensure that the first rod 661 returns accurately. The toggle portion 632 can both toggle the first rod 661 to rotate and limit the first rod 661, so that there is no need to set an additional limit structure to limit the first rod 661, which is conducive to reducing the number of parts used and saving installation space.

[0267] In some achievable embodiments, the toggle portion 632 of the driving unit abuts against the first rod 661. The toggle portion 632 and the first rod 661 can slide relative to each other. During the switching of the cutting device 40 between the center position and the side cutting position, the toggle portion 632 always abuts against the first rod 661, so that the two maintain a contact state. During the process of the toggle portion 632 toggle the first rod 661 to rotate or during the process of the toggle portion 632 releasing the first rod 661, there is relative sliding between the first rod 661 and the toggle portion 632, so as to avoid the first rod 661 applying resistance to the toggle portion 632 and affecting the stability of the rotation process of the toggle portion 632, and also to avoid the toggle portion 632 pulling the first rod 661 and causing the first rod 661 to deform or be damaged.

[0268] Since the first rod 661 and the toggle portion 632 can achieve force transmission by abutting against each other, the connection method between the first rod 661 and the toggle portion 632 can make the first rod 661 and the toggle portion 632 easy to manufacture and easy to assemble.

[0269] For some examples, see Fig. 9 As shown, the toggle portion 632 may include a contact curved surface 632a and a contact plane 632b. The contact curved surface 632a and the contact plane 632b are connected. The first rod body 661 includes a receiving plane 661a facing the toggle portion 632. In the initial state, the contact plane 632b of the toggle portion 632 abuts against the receiving plane 661a. After the toggle portion 632 rotates and toggles the first rod body 661 to rotate, the contact curved surface 632a abuts against the receiving plane 661a. In the process of the toggle portion 632 toggling the first rod body 661 to rotate or the toggle portion 632 releasing the first rod body 661, while the contact curved surface 632a of the toggle portion 632 slides relative to the receiving plane 661a, the contact curved surface 632a of the toggle portion 632 also rotates relative to the receiving plane 661a. The abutting curved surface 632 a provided on the toggle portion 632 can help reduce the rotational resistance when the toggle portion 632 rotates relative to the first rod 661 , thereby ensuring the stability of the relative movement between the toggle portion 632 and the first rod 661 .

[0270] Exemplarily, the abutting curved surface 632a of the toggle portion 632 may be a cylindrical surface.

[0271] In some achievable ways, the second rod 662 abuts against the cutting device 40. The second rod 662 and the cutting device 40 are in contact with each other. The second rod 662 and the cutting device 40 can slide relative to each other. When the cutting device 40 moves vertically, there is relative sliding between the second rod 662 and the cutting device 40, so as to avoid the second rod 662 exerting resistance on the cutting device 40 and affecting the stability of the vertical movement of the cutting device 40, and also to avoid the vertically moving cutting device 40 pulling the second rod 662 and causing the second rod 662 to be deformed or damaged.

[0272] In addition, when the cutting device 40 moves laterally, there is relative sliding between the second rod 662 and the cutting device 40, which prevents the second rod 662 from exerting resistance on the cutting device 40 and affecting the smoothness of the lateral movement of the cutting device 40, and also prevents the lateral moving cutting device 40 from pulling the second rod 662 and causing deformation and damage to the second rod 662.

[0273] Furthermore, since the second rod body 662 and the cutting device 40 can achieve force transmission by abutting against each other, there is no need to set up an additional complex connection structure between the second rod body 662 and the cutting device 40, so that the second rod body 662 and the cutting device 40 are easy to process and manufacture respectively, and the assembly difficulty between the two is low.

[0274] In some possible implementations, see Figures 6 to 9 As shown, the cutting device 40 includes a driver 41. The driver 41 is slidably connected to a transverse guide member 64. An elastic reset member 65 is disposed on the transverse guide member 64, and the elastic reset member 65 is connected to the driver 41. The second rod 662 abuts against a surface of the driver 41 that faces away from the elastic reset member 65.

[0275] In some examples, when the second rod 662 drives the driver 41 to move laterally on the transverse guide 64, the driver 41 can squeeze the elastic reset member 65 so that the elastic reset member 65 accumulates elastic potential energy. When the second rod 662 releases the driver 41, the elastic reset member 65 can release the elastic potential energy, so that the elastic reset member 65 pushes the driver 41 to move laterally on the transverse guide 64.

[0276] The position adjustment device 60 uses a driving unit, a toggle member 66 and an elastic reset member 65 to drive the cutting device 40 to move laterally on the transverse guide member 64. Therefore, the power source for driving the support arm 62 to rotate relative to the support 61 and the power source for driving the cutting device 40 to move laterally are both from the driving unit, so that the position adjustment device 60 does not need to be provided with more power sources, effectively reducing the number of parts in the position adjustment device 60, improving the compactness of the structure of the position adjustment device 60, and reducing space occupation.

[0277] In some examples, the contact area between the second rod 662 and the surface of the driver 41 facing away from the elastic reset member 65 is the contact surface. The second rod 662 is in surface contact with the driver 41. The contact area between the second rod 662 and the driver 41 is relatively large, which is conducive to increasing the area of ​​the force-bearing surface between the second rod 662 and the driver 41, and is conducive to improving the stability of the second rod 662 driving the driver 41 to move.

[0278] In some examples, the elastic reset member 65 abuts against the driver 41. For example, the elastic reset member 65 abuts against the surface of the driver 41 that faces away from the second rod 662. The elastic reset member 65 maintains a contact state with the driver 41. Since the elastic reset member 65 and the driver 41 can achieve force transmission by abutting against each other, the connection method between the elastic reset member 65 and the driver 41 can make the elastic reset member 65 and the driver 41 easy to manufacture and assemble.

[0279] In other examples, the elastic reset member 65 is detachably connected to the driver 41. For example, a hook is provided on the elastic reset member 65, and a hanging hole is provided on the driver 41. The hook of the elastic reset member 65 is hung on the hanging hole of the driver 41.

[0280] In some practicable embodiments, the cutting device 40 further comprises a sliding connection member 44. The sliding connection member 44 is connected to the driver 41. The sliding connection member 44 can be slidably connected to the transverse guide member 64.

[0281] The cutting device 40 is slidably connected to the transverse guide member 64 via the sliding connector 44, which helps to reduce the complexity of the connection structure between the cutting device 40 and the transverse guide member 64, while ensuring the smoothness of the sliding process of the cutting device 40 relative to the transverse guide member 64.

[0282] In some achievable ways, the elastic reset member 65 is a coil spring. The elastic reset member 65 is sleeved on the transverse guide member 64. There is no need to additionally set a connecting structure between the elastic reset member 65 and the transverse guide member 64, thereby reducing the processing difficulty of the elastic reset member 65 and the transverse guide member 64 and reducing the assembly difficulty of the elastic reset member 65 and the transverse guide member 64. In addition, the transverse guide member 64 can play a limiting constraint role on the elastic reset member 65, so that when the elastic reset member 65 is deformed, it is not easy for itself to deviate or fall off. Exemplarily, the transverse guide member 64 can be a circular shaft. The axial direction of the transverse guide member 64 is the same as the sliding direction of the cutting device 40.

[0283] In some possible implementations, see Figures 6 to 9 As shown, the driving unit includes a cam 63. The cam 63 has a toggle portion 632. The cam 63 includes a helical surface 631. The support arm 62 abuts against the helical surface 631. The rotation axis of the cam 63 is a vertical axis extending along the vertical direction Y.

[0284] In some achievable embodiments, the number of the support arms 62 is two. The two support arms 62 are spaced apart in the vertical direction Y. The upper support arm 62 is connected to the drive unit. The two support arms 62 are rotatably connected to the support 61, respectively. The number of the transverse guide members 64 is two. The two transverse guide members 64 are spaced apart in the vertical direction Y. The two transverse guide members 64 are rotatably connected to the two support arms 62, respectively. An elastic reset member 65 is provided on at least one of the two transverse guide members 64.

[0285] For example, an elastic reset member 65 is provided on one of the two transverse guide members 64. A relatively small number of elastic reset members 65 can be used in the position adjustment device 60 to meet the need of pushing the cutting device 40 to move transversely, which is beneficial for reducing the number of parts used in the position adjustment device 60 and reducing the difficulty of assembling each structural member in the position adjustment device 60. For example, an elastic reset member 65 can be provided on the upper transverse guide member 64.

[0286] Exemplarily, elastic reset members 65 are provided on both transverse guide members 64. The elastic reset members 65 provided on the two transverse guide members 64 can simultaneously apply forces to the cutting device 40 at different positions, thereby facilitating the force balance of the cutting device 40 during the transverse movement process on the transverse guide member 64, and improving the stability of the transverse movement process of the cutting device 40. In addition, in the event that the elastic reset member 65 on any transverse guide member 64 is damaged and fails, the other elastic reset member 65 can still push the cutting device 40 to move laterally, thereby facilitating the design redundancy and reliability of the position adjustment device 60.

[0287] In some achievable embodiments, 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 transverse connecting arm 621 is connected to the drive unit. The first sub-support arm 622 is rotatably connected to the support 61. The second sub-support arm 623 is located on a side of the transverse connecting arm 621 away from the support 61. The number of transverse guide members 64 is two. The two transverse guide members 64 are spaced apart along the vertical direction Y. The transverse guide member 64 is rotatably connected to the second sub-support arm 623.

[0288] In some achievable ways, in one support arm 62, the number of the second sub-support arms 623 is two. Along the direction perpendicular to the vertical direction Y, the two second sub-support arms 623 are arranged at intervals. A transverse guide 64 is rotatably connected to the two second sub-support arms 623 in one support arm 62. The elastic reset member 65 is located between the second sub-support arm 623 and the cutting device 40. For example, the elastic reset member 65 is located between the second sub-support arm 623 and the driver 41. The direction perpendicular to the vertical direction Y is the same as the sliding direction of the cutting device 40.

[0289] The elastic reset member 65 can reuse the space between the second sub-support arm 623 and the cutting device 40, which is beneficial to improving the compactness of the structure of the position adjustment device 60. In addition, the second sub-support arm 623 can form a limit constraint on the elastic reset member 65 to prevent the elastic reset member 65 from falling off the transverse guide member 64, and there is no need to set an additional limit structure on the transverse guide member 64 to limit the elastic reset member 65, which is beneficial to reducing the difficulty of processing the transverse guide member 64.

[0290] An embodiment of the present application provides a lawn mower 10 , including a body 30 and a cutting system 20 .

[0291] The cutting system 20 includes a cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. 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 first sub-support arm 622 is rotatably connected to the support 61. The transverse connecting arm 621 is connected to the drive unit. The second sub-support arm 623 is located on the side of the transverse connecting arm 621 facing away from the support 61. The transverse guide 64 is rotatably connected to the second sub-support arm 623. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is arranged on the transverse guide 64, and the elastic reset member 65 is arranged between the second sub-support arm 623 and the cutting device 40. The drive unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40. The driving unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64 and deform the elastic reset member 65.

[0292] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can drive the cutting device 40 to move laterally through the cooperation of the toggle member 66 and the elastic reset member 65, and adjust the relative position of the cutting device 40 and the body 30, so that the cutting device 40 can trim the area close to the lawn boundary, which is helpful to avoid a large area of ​​uncut lawn remaining at the lawn boundary.

[0293] In some achievable embodiments, the orthographic projection of the cutting system 20 facing the ground is at least partially located within the orthographic projection of the fuselage 30 facing the ground. The cutting device 40 includes a blade 421. The toggle member 66 is used to drive the cutting device 40 to move laterally so that at least a portion of the blade 421 moves outside the orthographic projection of the fuselage 30 facing the ground.

[0294] When the cutting device 40 moves laterally, at least part of the blade 421 can be located outside the orthographic projection of the body 30 toward the ground. The blade 421 can be moved to the outside of the body 30 of the lawn mower 10, 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 user experience.

[0295] In some practicable embodiments, a portion of the transverse guide 64 extends beyond the orthographic projection of the fuselage 30 toward the ground. Therefore, when the cutting device 40 moves laterally relative to the transverse guide 64, at least a portion of the blade 421 is located outside the orthographic projection of the fuselage 30 toward the ground.

[0296] When the lawn border needs to be trimmed, the cutting device 40 moves along the transverse guide 64 to the outside of the body 30 of the lawn mower 10, so that the area of ​​the blade 421 moving to the outside of the lawn mower 10 is increased, further improving the trimming effect of the lawn border.

[0297] In some feasible embodiments, the cutting system 20's orthographic projection toward the ground is located within the orthographic projection of the fuselage 30 toward the ground, the cutting device 40 includes a blade 421, a driving device drives the cutting device 40 to move laterally, and the cutting device 40 drives the blade 421 to move laterally within the orthographic projection of the fuselage 30 toward the ground, and the minimum horizontal distance between the outer edge of the blade 421 and the side edge of the orthographic projection of the fuselage 30 toward the ground is greater than or equal to 0 mm and less than or equal to 50 mm.

[0298] When the width of the lawn edge that 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 421 and the side edge of the orthographic projection of the fuselage 30 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, does not require manual secondary trimming, and improves the edge cutting effect. In addition, the blade 421 is located inside the fuselage 30, and the safety requirements can be met without the need for an additional protective structure.

[0299] An embodiment of the present application provides a lawn mower 10 , including a body 30 and a cutting system 20 .

[0300] The fuselage 30 includes a first lower edge 311. The cutting system 20 is arranged on the fuselage 30. The cutting device 40 includes a blade disc and a blade disc cover. The cutting system 20 includes a cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. 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 first sub-support arm 622 is rotatably connected to the support 61. The transverse connecting arm 621 is connected to the drive unit. The second sub-support arm 623 is located on the side of the transverse connecting arm 621 facing away from the support 61. The transverse guide 64 is rotatably connected to the second sub-support arm 623. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is arranged on the transverse guide member 64, and the elastic reset member 65 is arranged between the second sub-support arm 623 and the cutting device 40. The driving unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40.

[0301] The driving unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64, so that the cutting device 40 switches between the center position and the side cutting position, and deforms the elastic reset member 65.

[0302] The cutting device 40 includes a blade disc 42 and a blade disc cover 43. The blade disc 42 is located in the blade disc cover 43. The blade disc 42 includes a blade 421, and the blade disc cover 43 has a second lower edge 43a. When the cutting device 40 is located at the edge cutting position, along the vertical direction, the second lower edge 43a is lower than the first lower edge 311, and the second lower edge 43a is lower than the lower surface of the blade 421.

[0303] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can drive the cutting device 40 to move laterally through the cooperation of the toggle member 66 and the elastic reset member 65, so as to adjust the relative position of the cutting device 40 and the body 30. Under the driving action of the position adjustment device 60, the cutting device 40 can switch 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, so as to help avoid a large area of ​​uncut lawn remaining 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 conducive to improving the cutting efficiency and cutting effect.

[0304] In addition, in the lawn mower 10 of the embodiment of the present application, the position adjustment device 60 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 lower surface of the blade 421. 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 safely, the palm of the operator can be placed on 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 on the outside of 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.

[0305] 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 fuselage 30 can be adjusted to be very small, and the outer edge of the blade disc cover 43 can be infinitely close to the fuselage 30, which greatly reduces the width of the uncut lawn and improves the side cutting effect.

[0306] Since the outer edge of the blade cover 43 can be infinitely close to the fuselage 30 , most hard impurities (such as pebbles) cannot enter between the blade cover 43 and the fuselage 30 , thereby preventing the hard impurities from scratching or damaging the blade cover 43 or the fuselage 30 .

[0307] 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.

[0308] 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 60 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.

[0309] In some achievable ways, Fig.10 A partial structure of the lawn mower 10 is schematically shown. Fig.10 In the embodiment, the cutting device 40 is in the edge cutting position. Fig.10 As shown, the fuselage 30 includes a side skirt 31. When the cutting device 40 is in the edge cutting position, along a direction perpendicular to the side skirt 31, the minimum horizontal distance d between the outer edge of the blade 421 and the side skirt 31 is greater than or equal to 10 mm and less than or equal to 50 mm.

[0310] In the edge cutting state, the minimum horizontal distance between the outer edge of the blade 421 and the side skirt 31 of the body 30 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 421 and the side skirt 31 of the body 30 is greater than 50 mm, the width of the area that cannot be cut at the edge of the lawn will affect the visual appearance, and manual re-trimming is required, which affects the user's experience. When the minimum horizontal distance between the outer edge of the blade 421 and the side skirt 31 of the body 30 is less than 10 mm, when the user is carrying the mowing, the finger is easily accidentally touched by the blade 421 when it is buckled into the body 30 from the lower edge of the side skirt 31, causing injury to the user. When the minimum horizontal distance between the outer edge of the blade 421 and the side skirt 31 of the body 30 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 manual re-trimming is not required, thereby improving the edge cutting effect.

[0311] In some achievable ways, Fig.11 A partial structure of the lawn mower 10 is schematically shown. Fig.11 In the embodiment, the cutting device 40 in the cutting system 20 is in the central position. Fig.10 and Fig.11 As shown, the fuselage 30 includes a side skirt 31. When the cutting device 40 is at the center of the fuselage 30, along a direction perpendicular to the side skirt 31, the minimum horizontal distance between the outer edge of the blade 421 and the side skirt 31 of the fuselage 30 is D.

[0312] When the cutting device 40 is at the edge cutting position of the body 30, the minimum horizontal distance between the outer edge of the blade 421 and the side skirt 31 of the body 30 is d along the direction perpendicular to the side skirt 31. The value of D is greater than the value of d.

[0313] In the embodiment of the present application, the lawn mower 10 has two working positions. According to different usage scenarios, the cutting device 40 can be adjusted to the center position of the body 30 or the side cutting position of the body 30 to meet different mowing needs of users.

[0314] Fig.12 The partial structure of the cutting system 20 is schematically shown. Fig.12 As shown, an embodiment of the present application provides a cutting system 20 for a lawn mower 10. The cutting system 20 includes a cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. One end of the support arm 62 is rotatably connected to the support 61. The other end of the support arm 62 is rotatably connected to the transverse guide 64. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is disposed on the transverse guide 64. The drive unit is connected to the support arm 62. The drive unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40.

[0315] The driving unit is used to drive the support arm 62 to rotate relative to the support 61 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64 and deform the elastic reset member 65.

[0316] When the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, the position adjustment device 60 can drive the cutting device 40 to move laterally through the coordinated action of the toggle member 66 and the elastic reset member 65, and adjust the relative position of the cutting device 40 and the body 30, so that the cutting device 40 can trim the area close to the lawn boundary, which is beneficial to avoid leaving too large an area of ​​uncut lawn at the lawn boundary, and is beneficial to improving the cutting efficiency and cutting effect.

[0317] In some possible implementations, see Fig.12 As shown, the number of the support arm 62 can be one, which is beneficial to reducing the number of parts used and to making the structure of the cutting system 20 itself compact.

[0318] In some achievable ways, Fig.13 The partial structure of the cutting system 20 is schematically shown. Fig.13 As shown, the position adjustment device 60 includes at least two support arms 62 and at least two transverse guides 64. The number of the transverse guides 64 is consistent with the number of the support arms 62 and corresponds one to one. At least two support arms 62 are arranged at intervals along the vertical direction. One end of the at least two support arms 62 is rotatably connected to the support 61. The other end of the at least two support arms 62 is rotatably connected to the corresponding transverse guide 64. The cutting device 40 is slidably connected to at least one transverse guide 64. An elastic reset member 65 is provided on at least one of the transverse guides 64.

[0319] A connecting rod structure relationship can be formed between the support 61, the support arm 62, the transverse guide member 64 and the cutting device 40, which is beneficial to further improve the connection stability among the support 61, the support arm 62, the transverse guide member 64 and the cutting device 40.

[0320] An elastic reset member 65 is disposed on one of the transverse guide members 64. A relatively small number of elastic reset members 65 can be used in the position adjustment device 60 to meet the need of pushing the cutting device 40 to move transversely, which is beneficial for reducing the number of parts used in the position adjustment device 60 and reducing the difficulty of assembling each structural member in the position adjustment device 60. For example, the elastic reset member 65 can be disposed on the uppermost transverse guide member 64.

[0321] Alternatively, each transverse guide member 64 is provided with an elastic reset member 65. The elastic reset member 65 provided on each transverse guide member 64 can simultaneously apply forces to the cutting device 40 at different positions, thereby facilitating the force balance of the cutting device 40 during the transverse movement process on the transverse guide member 64, and improving the stability of the transverse movement process of the cutting device 40. In addition, in the event that the elastic reset member 65 on any transverse guide member 64 is damaged and fails, the other elastic reset members 65 can still push the cutting device 40 to move laterally, thereby facilitating the design redundancy and reliability of the position adjustment device 60.

[0322] In some achievable ways, Fig.14 The partial structure of the cutting system 20 is schematically shown. Fig.14 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 driving unit is connected to the transverse connecting arm 621. 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.

[0323] By applying torque to the transverse connecting arm 621, the support arm 62 can be driven to rotate relative to the support 61, which is conducive to improving the overall structural compactness of the support arm 62 and taking up less space. The end of the transverse guide member 64 can be rotatably connected to the second sub-support arm 623, which effectively ensures the connection stability and reliability between the transverse guide member 64 and the support arm 62.

[0324] In some examples, in each support arm 62 , the number of the first sub-support arms 622 and the number of the second sub-support arms 623 are both one.

[0325] For some examples, see Fig.14 As shown, the number of the support arm 62 can be one, which is beneficial to reducing the number of parts used and to making the structure of the cutting system 20 itself compact.

[0326] In some examples, each support arm 62 includes at least two transverse connecting arms 621. At least two transverse connecting arms 621 constitute a transverse connecting arm group. A first sub-support arm 622 is provided on one side of the transverse connecting arm group, and a second sub-support arm 623 is provided on the other side. The number of transverse connecting arms 621 is set to at least two, which is conducive 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.

[0327] In some examples, Fig.15 The partial structure of the cutting system 20 is schematically shown. Fig.15 As shown, the position adjustment device 60 includes at least two support arms 62 and at least two transverse guides 64. The number of the transverse guides 64 is consistent with the number of the support arms 62 and corresponds one to one. At least two support arms 62 are arranged at intervals along the vertical direction. One end of the at least two support arms 62 is rotatably connected to the support 61. The other end of the at least two support arms 62 is rotatably connected to the corresponding transverse guide 64. The cutting device 40 is slidably connected to at least one transverse guide 64. An elastic reset member 65 is provided on at least one of the transverse guides 64.

[0328] For some examples, see Fig.15 As shown, there are two support arms 62. There are two transverse guide members 64. One of the two transverse guide members 64 is provided with an elastic reset member 65.

[0329] In some achievable embodiments, the driving unit includes a cam 63. The cam 63 has a toggle portion 632. The cam 63 includes a helical surface. The support arm 62 abuts against the helical surface.

[0330] The spiral surface of the cam 63 is a continuous surface, which is beneficial to improving the movement stability of the support arm 62 relative to the support 61 during the swinging process and reducing the possibility of impact and setback between the support arm 62 and the cam 63.

[0331] In some achievable embodiments, there are at least two support arms 62. The support arms 62 are arranged at intervals in the vertical direction. The uppermost support arm 62 is connected to the drive unit.

[0332] The driving unit connected to one support arm 62 can simultaneously drive each support arm 62 to rotate synchronously relative to the support 61. Therefore, a connecting structure can be set between the driving unit and the top support arm 62, which is conducive to reducing the difficulty of designing the connecting structure between the driving unit and each support arm 62.

[0333] In some achievable embodiments, in at least one support arm 62, the number of the second sub-support arms 623 is two. The two second sub-support arms 623 of each support arm 62 are arranged at intervals. The transverse guide member 64 is rotatably connected to the two second sub-support arms 623 of the corresponding support arm 62, and the elastic reset member 65 is located between the second sub-support arm 623 of the corresponding support arm 62 and the cutting device 40.

[0334] The elastic reset member 65 can reuse the space between the second sub-support arm 623 and the cutting device 40, which is beneficial to improving the compactness of the structure of the position adjustment device 60. In addition, the second sub-support arm 623 can form a limit constraint on the elastic reset member 65 to prevent the elastic reset member 65 from falling off the transverse guide member 64, and there is no need to set an additional limit structure on the transverse guide member 64 to limit the elastic reset member 65, which is beneficial to reducing the difficulty of processing the transverse guide member 64.

[0335] In some achievable embodiments, the support arm 62 includes two second sub-support arms 623. An accommodating portion 62a is provided between the two second sub-support arms 623. The cutting device 40 is disposed in the accommodating portion 62a.

[0336] The cutting device 40 is inserted into the receiving portion 62a of the support arm 62, so that the cutting device 40 can reuse the receiving portion 62a of the support arm 62, so as to effectively improve the structural compactness of the cutting system 20, reduce the overall volume, and occupy a small space.

[0337] In some achievable embodiments, the cutting device 40 includes a driver 41, a blade cover 43, and a blade 42. The blade 42 is connected to the output shaft of the driver 41. The blade 42 includes a blade 421. The blade cover 43 is connected to the driver 41. The blade 42 is disposed below the blade cover 43. The blade 42 is connected to the output shaft of the driver 41. The support arm 62 includes a receiving portion 62a. The driver 41 is inserted into the receiving portion 62a.

[0338] In some achievable embodiments, in at least one support arm 62 , there are two first sub-support arms 622 . The two first sub-support arms 622 of each support arm 62 are arranged at intervals. At least a portion of the driving unit is located between the two first sub-support arms 622 .

[0339] At least 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 cutting system 20, reducing the overall volume, and occupying less space.

[0340] The present application provides a lawn mower 10 , which includes a body 30 and a cutting system 20 .

[0341] The cutting system 20 includes a cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. One end of the support arm 62 is rotatably connected to the support 61, and the other end of the support arm 62 is rotatably connected to the transverse guide 64. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is arranged on the transverse guide 64. The drive unit is connected to the support arm 62. The drive unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40. The drive unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 above the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64 and deform the elastic reset member 65 .

[0342] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can drive the cutting device 40 to move laterally through the cooperation of the toggle member 66 and the elastic reset member 65, and adjust the relative position of the cutting device 40 and the body 30, so that the cutting device 40 can trim the area close to the lawn boundary, which is helpful to avoid a large area of ​​uncut lawn remaining at the lawn boundary.

[0343] An embodiment of the present application provides a lawn mower 10 , including a body 30 and a cutting system 20 .

[0344] The body 30 includes a first lower edge 311. The cutting system 20 is disposed on the body 30. The cutting device 40 includes a blade disc 42 and a blade disc cover 43. The cutting system 20 includes the cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65, and a toggle member 66. One end of the support arm 62 is rotatably connected to the support 61, and the other end of the support arm 62 is rotatably connected to the transverse guide 64. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is disposed on the transverse guide 64. The drive unit is connected to the support arm 62. The drive unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40.

[0345] The driving unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64, so that the cutting device 40 switches between the center position and the side cutting position, and deforms the elastic reset member 65.

[0346] The cutting device 40 includes a blade disc 42 and a blade disc cover 43. The blade disc 42 is located in the blade disc cover 43. The blade disc 42 includes a blade 421, and the blade disc cover 43 has a second lower edge 43a. When the cutting device 40 is located at the edge cutting position, along the vertical direction, the second lower edge 43a is lower than the first lower edge 311, and the second lower edge 43a is lower than the lower surface of the blade 421.

[0347] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can drive the cutting device 40 to move laterally through the cooperation of the toggle member 66 and the elastic reset member 65, so as to adjust the relative position of the cutting device 40 and the body 30. Under the driving action of the position adjustment device 60, the cutting device 40 can switch 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, so as to help avoid a large area of ​​uncut lawn remaining 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 conducive to improving the cutting efficiency and cutting effect.

[0348] An embodiment of the present application provides a lawn mower 10 , including a body 30 and a cutting system 20 .

[0349] The cutting system 20 includes a cutting device 40 and a position adjustment device 60. The position adjustment device 60 includes a support arm 62, a support 61, a drive unit, a transverse guide 64, an elastic reset member 65 and a toggle member 66. One end of the support arm 62 is rotatably connected to the support 61, and the other end of the support arm 62 is rotatably connected to the transverse guide 64. The cutting device 40 is slidably connected to the transverse guide 64. The elastic reset member 65 is arranged on the transverse guide 64. The length direction of the transverse guide 64 and the forward direction Z of the lawn mower 10 have an angle α. The angle α is greater than 0 degrees and less than 180 degrees. The drive unit is connected to the support arm 62. The drive unit includes a toggle portion 632. The toggle member 66 is rotatably connected to the support 61. The toggle portion 632 is connected to the toggle member 66. The toggle member 66 is connected to the cutting device 40.

[0350] The driving unit is used to drive the support arm 62 to rotate relative to the support 61 through the transverse connecting arm 621 to adjust the height of the cutting device 40 relative to the ground, and the toggle portion 632 is used to synchronously toggle the toggle member 66 to rotate relative to the support 61. The toggle member 66 is used to toggle the cutting device 40 to move laterally relative to the transverse guide member 64 and deform the elastic reset member 65.

[0351] The lawn mower 10 of the embodiment of the present application includes a position adjustment device 60 and a cutting device 40. The position adjustment device 60 can drive the cutting device 40 to move laterally through the cooperation of the toggle member 66 and the elastic reset member 65, and adjust the relative position of the cutting device 40 and the body 30, so that the cutting device 40 can trim the area close to the lawn boundary, which is helpful to avoid a large area of ​​uncut lawn remaining at the lawn boundary.

[0352] In some achievable embodiments, the orthographic projection of the cutting system 20 toward the ground is located within the orthographic projection of the fuselage 30 toward the ground. The length of the transverse guide 64 is S, the width of the fuselage 30 is W, and 0.3W≤S*sinα≤0.7W. The vertical distance between the end of the transverse guide 64 and the symmetry plane of the fuselage 30 is less than or equal to 0.35W. The symmetry plane of the fuselage 30 is perpendicular to the transverse direction X of the lawn mower 10. The symmetry plane of the fuselage 30 is a virtual plane that divides the fuselage 30 into two. The width W of the fuselage 30 is a dimension measured along the transverse direction X of the lawn mower 10.

[0353] S*sinα is the length of the transverse guide 64 along the width of the fuselage 30. When the value of S*sinα is less than 0.3W, the lateral movement range of the cutting device 40 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. The user needs 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 64 will occupy more space inside the fuselage 30, and more space needs to be reserved inside the fuselage 30 to avoid the cutting device 40, which increases the volume of the fuselage 30, which is not conducive to the miniaturization of the lawn mower 10. At the same time, the excessive length of the transverse guide 64 causes the center of gravity of the lawn mower 10 to shift to one side of the lawn mower, resulting in a decrease in the stability of the lawn mower 10.

[0354] In some practicable embodiments, an angle α is formed between the length direction of the transverse guide member 64 and the advancing direction Z of the lawn mower 10 . The angle α is between 85 degrees and 95 degrees.

[0355] When the length of the lateral guide member 64 is constant and the angle α is in the range of 85 degrees to 95 degrees, the movement range of the cutting device 40 along the width of the fuselage 30 is larger than when the angle α takes other values, which can effectively utilize the space inside the fuselage 30, improve the mowing efficiency and ensure the miniaturization of the machine.

[0356] In some practicable embodiments, there is an angle α between the length direction of the transverse guide member 64 and the advancing direction Z of the lawn mower 10. The angle α is 90 degrees.

[0357] When the length of the transverse guide 64 is constant and the angle α is 90 degrees, the cutting device 40 has the largest range of movement along the width direction of the fuselage 30, and can maximize the use of the space inside the fuselage 30 to achieve the effect of cutting to the edge.

[0358] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The embodiments of the present application do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0359] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, systems, products or devices.

[0360] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0361] It is understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. It is understood that in the embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A cutting system for a lawn mower, characterized in that: The cutting system comprises: Cutting device; A position adjustment device, comprising a support arm, a support, a drive unit, a transverse guide, an elastic reset member and a toggle member; One end of the support arm is rotatably connected to the support, the other end of the support arm is rotatably connected to the transverse guide member, the cutting device is slidably connected to the transverse guide member, the elastic reset member is arranged on the transverse guide member, the driving unit is connected to the support arm, the driving unit comprises a toggle part, the toggle part is rotatably connected to the support, the toggle part is connected to the toggle member, and the toggle member is connected to the cutting device; Wherein, the driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device above the ground, and the toggle part is used to synchronously drive the toggle member to rotate relative to the support, and the toggle member is used to drive the cutting device to move laterally relative to the transverse guide member and cause the elastic reset member to deform.

2. The cutting system according to claim 1, characterized in that: The support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The driving unit is connected to the transverse connecting 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, and the transverse guide member is rotatably connected to the end of the second sub-support arm.

3. The cutting system according to claim 2, 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.

4. The cutting system according to any one of claims 1 to 3, characterized in that: The position adjustment device includes at least two support arms and at least two transverse guide members, 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 can be rotatably connected to the support, and the other end of the at least two support arms can be rotatably connected to the corresponding transverse guide member, the cutting device is slidably connected to at least one of the transverse guide members, and the elastic reset member is arranged on at least one of the transverse guide members.

5. The cutting system according to claim 1, characterized in that: The toggle member includes a first rod body and a second rod body, the toggle portion is connected to the first rod body, the second rod body is connected to the cutting device, the toggle portion is used to toggle the first rod body and the second rod body to rotate relative to the support, and the second rod body is used to toggle the cutting device to move laterally relative to the transverse guide member.

6. The cutting system according to claim 5, characterized in that: The first rod body and the second rod body are rotatably connected to the support via the same vertical axis, the second rod body includes a first straight rod segment and a second straight rod segment, the first straight rod segment is connected to the first rod body, the first straight rod segment is rotatably connected to the vertical axis, the second straight rod segment is connected to the cutting device, the angle between the first straight rod segment and the second straight rod segment is an obtuse angle, and the second straight rod segment is inclined toward the driving unit relative to the first straight rod segment.

7. The cutting system according to claim 6, characterized in that: The first rod body is a straight rod body, the angle between the first rod body and the first straight rod segment is an obtuse angle, and the first rod body is perpendicular to the second straight rod segment.

8. The cutting system according to claim 6, characterized in that: The toggle portion and the second rod body are located on a side of the first rod body facing the transverse guide member.

9. The cutting system according to claim 5, characterized in that: The shifting portion abuts against the first rod.

10. The cutting system according to claim 5, characterized in that: The cutting device includes a driver and a cutter disc, the cutter disc is connected to the output shaft of the driver, the driver is slidably connected to the transverse guide member, the elastic return member is arranged on the transverse guide member, and the elastic return member is connected to the driver, and the second rod body abuts against the surface of the driver facing away from the elastic return member.

11. The cutting system according to claim 10, characterized in that: The cutting device further comprises a cutter disc cover, wherein the cutter disc cover is connected to the driver, and the cutter disc is arranged below the cutter disc cover.

12. The cutting system according to claim 11, characterized in that The cutter disc cover comprises two flanges, the two flanges are arranged at intervals along the lateral direction of the lawn mower, and the cutter disc is arranged between the two flanges.

13. The cutting system according to claim 12, characterized in that: The cutter disc cover has a bottom opening, the bottom opening avoids the cutter disc, and the size of the bottom opening is larger than the diameter of the cutter disc.

14. The cutting system according to claim 10, characterized in that The contact area between the second rod body and the surface of the driver facing away from the elastic return member is a contact surface.

15. The cutting system according to claim 10, characterized in that The cutting device further comprises a sliding connection member connected to the driver, and the sliding connection member can be slidably connected to the transverse guide member.

16. The cutting system according to claim 1, characterized in that The elastic reset member is a coil spring, and the elastic reset member is sleeved on the transverse guide member.

17. The cutting system according to claim 1, characterized in that The transverse guide member is a circular shaft, the cutting device comprises an shaft hole, and the transverse guide member is passed through the shaft hole.

18. The cutting system according to claim 1, characterized in that The driving unit comprises a cam, the cam has the toggle portion, the cam comprises a spiral surface, and the support arm abuts against the spiral surface.

19. The cutting system according to claim 1, characterized in that The number of the support arms is at least two, and the support arms are arranged at intervals along the vertical direction, and the uppermost support arm is connected to the driving unit.

20. The cutting system according to claim 2, characterized in that In at least one of the support arms, the number of the second sub-support arms is two, and the two second sub-support arms of each support arm are arranged at intervals, the transverse guide member is rotatably connected to the two second sub-support arms of the corresponding support arm, and the elastic reset member is located between the second sub-support arm of the corresponding support arm and the cutting device.

21. The cutting system according to claim 2, characterized in that The support arm includes two second sub-support arms, an accommodating portion is provided between the two second sub-support arms, and the cutting device is disposed through the accommodating portion.

22. The cutting system according to claim 21, characterized in that The cutting device includes a driver, a blade cover and a blade, the blade cover is connected to the driver, the blade is arranged below the blade cover, the blade is connected to the output shaft of the driver, the support arm includes a receiving portion, and the driver is inserted into the receiving portion.

23. The cutting system according to claim 2, characterized in that In at least one of the support arms, the number of the first sub-support arms is two, the two first sub-support arms of each support arm are arranged at an interval, and at least a part of the driving unit is located between the two first sub-support arms.

24. A lawn mower, characterized in that: Comprising a cutting system as claimed in any one of claims 1 to 23.

25. A lawn mower, characterized in that: include: body; A cutting system, including a cutting device and a position adjustment device; The position adjustment device comprises a support arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member; One end of the support arm is rotatably connected to the support, the other end of the support arm is rotatably connected to the transverse guide member, the cutting device is slidably connected to the transverse guide member, the elastic reset member is arranged on the transverse guide member, the driving unit is connected to the support arm, the driving unit comprises a toggle part, the toggle part is rotatably connected to the support, the toggle part is connected to the toggle member, and the toggle member is connected to the cutting device; Wherein, the driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device above the ground, and the toggle part is used to synchronously drive the toggle member to rotate relative to the support, and the toggle member is used to drive the cutting device to move laterally relative to the transverse guide member and cause the elastic reset member to deform.

26. The lawn mower according to claim 25, characterized in that The cutting system's projection toward the ground is at least partially located within the fuselage's projection toward the ground, the cutting device includes a blade, and the toggle member is used to drive the cutting device to move laterally so that at least part of the blade moves outside the fuselage's projection toward the ground.

27. The lawn mower according to claim 25, characterized in that A portion of the transverse guide extends out of an orthographic projection of the fuselage toward the ground.

28. The lawn mower according to claim 25, characterized in that The cutting system's orthographic projection toward the ground is located within the orthographic projection of the fuselage toward the ground, the cutting device includes a blade, the toggle member is used to drive the cutting device to move laterally, and the minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage toward the ground is greater than or equal to 0 mm and less than or equal to 50 mm.

29. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; A cutting system, arranged on the fuselage, the cutting system comprising a cutting device and a position adjustment device; The position adjustment device comprises a support arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member; One end of the support arm is rotatably connected to the support, the other end of the support arm is rotatably connected to the transverse guide member, the cutting device is slidably connected to the transverse guide member, the elastic reset member is arranged on the transverse guide member, the driving unit is connected to the support arm, the driving unit comprises a toggle part, the toggle part is rotatably connected to the support, the toggle part is connected to the toggle member, and the toggle member is connected to the cutting device; The driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device relative to the ground, and the toggle portion is used to synchronously toggle the toggle member to rotate relative to the support, and the toggle member is used to toggle the cutting device to move laterally relative to the transverse guide member, so that the cutting device switches between the center position and the side cutting position, and the elastic reset member is deformed; The cutting device includes a blade disc and a blade disc cover, wherein the blade disc is located inside 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 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.

30. The lawn mower according to claim 29, 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.

31. The lawn mower according to claim 29, 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.

32. A lawn mower, characterized in that: include: body; A cutting system, including a cutting device and a position adjustment device; The position adjustment device comprises a support arm, a support, a driving unit, a transverse guide, an elastic reset member and a toggle member; One end of the support arm is rotatably connected to the support, the other end of the support arm is rotatably connected to the transverse guide member, the cutting device is slidably connected to the transverse guide member, the elastic reset member is arranged on the transverse guide member, the length direction of the transverse guide member and the forward direction of the lawn mower form an angle α, the angle α is greater than 0 degrees and less than 180 degrees, the driving unit is connected to the support arm, the driving unit comprises a toggle part, the toggle member is rotatably connected to the support, the toggle part is connected to the toggle member, and the toggle member is connected to the cutting device; Wherein, the driving unit is used to drive the support arm to rotate relative to the support to adjust the height of the cutting device above the ground, and the toggle part is used to synchronously drive the toggle member to rotate relative to the support, and the toggle member is used to drive the cutting device to move laterally relative to the transverse guide member and cause the elastic reset member to deform.

33. The lawn mower according to claim 32, characterized in that The orthographic projection of the cutting system 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.

34. The lawn mower according to claim 33, characterized in that The angle α is between 85 degrees and 95 degrees.

35. The lawn mower according to claim 34, characterized in that The angle α is 90 degrees.

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