Height adjustment mechanism and lawn mower

Abstract

The present application provides a height adjustment mechanism, including a sliding member, a base and a locking assembly. The sliding member is formed with a sliding groove. The sliding groove has a plurality of locking grooves arranged in sequence and at intervals along the height direction of the sliding member. The base is formed with a receiving cavity with a top opening, and the sliding member is slidably arranged in the receiving cavity. The locking assembly is located on one side of the sliding member in the lateral direction. The locking assembly includes a swing arm and an elastic member. The swing arm includes an arm body and a locking shaft connected to the arm body. The arm body can swing relative to the base. The locking shaft has a locking position located in the locking groove and an escape position that is separated from the locking groove in the direction of the swing of the arm body. The elastic member provides the swing arm with an elastic force that can drive the locking shaft to move toward the locking position. The embodiment of the present application also provides a lawn mower, including the above-mentioned height adjustment mechanism. The height adjustment mechanism provided in the embodiment of the present application has a simple structure, and the height of the cutter disc is adjusted by applying an upward force to the sliding member. The operation is simple and convenient for users to use.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowers, and in particular to a height adjustment mechanism and a lawn mower. Background Art

[0002] Usually users have different requirements for mowing height. In the prior art, the mowing height is controlled by adjusting the height of the cutter disc from the ground. Therefore, the lawn mower needs to have a height adjustment mechanism for adjusting the height of the cutter disc from the ground. Summary of the invention

[0003] In view of this, the embodiment of the present application hopes to provide a height adjustment mechanism and a lawn mower, wherein the height adjustment mechanism has the characteristics of simple structure and easy operation. To achieve the above effect, the technical solution of the embodiment of the present application is implemented as follows:

[0004] An embodiment of the present application provides a height adjustment mechanism, including:

[0005] A sliding member, wherein the sliding member is formed with a sliding groove, and the sliding groove has a plurality of locking grooves arranged in sequence and at intervals along a height direction of the sliding member;

[0006] A base, wherein the base is formed with a receiving cavity with a top opening, and the sliding member is slidably disposed in the receiving cavity; and

[0007] A locking assembly is located on one lateral side of the sliding member, the locking assembly includes a swing arm and an elastic member, the swing arm includes an arm body and a locking shaft connected to the arm body, the arm body can swing relative to the base, the locking shaft has a locking position located in the locking groove and an escape position disengaged from the locking groove in the direction of the swinging of the arm body, the elastic member provides the swing arm with an elastic force that can drive the locking shaft to move toward the locking position.

[0008] Further, the locking assembly includes a stop plate that can slide relative to the base, the stop plate is formed with a longitudinal groove extending along the height direction of the sliding member and a transverse groove connected to the longitudinal groove, the arm body is located on a side of the stop plate away from the sliding member, and the locking shaft passes through the longitudinal groove or the transverse groove and then extends into the sliding groove;

[0009] The stop plate slides upward to allow the locking shaft to enter the longitudinal groove, and the locking shaft is limited to the avoidance position; the stop plate slides downward to allow the locking shaft to leave the longitudinal groove and enter the transverse groove, and the locking shaft can switch between the locking position and the avoidance position.

[0010] Further, the sliding member is formed with a stop groove extending in the height direction of the sliding member, the stop groove and the sliding groove are spaced apart, the stop plate comprises a plate body and a stop pin, the longitudinal groove and the transverse groove are formed on the plate body, and the stop pin is connected to the plate body and extends into the stop groove;

[0011] The stop pin can abut against the bottom wall of the stop groove to be pushed upward by the sliding member; the stop pin can abut against the top wall of the stop groove to be pushed downward by the sliding member.

[0012] Further, the locking assembly includes a mounting seat, the mounting seat includes a mounting portion and a mounting shaft connected to the mounting portion, the mounting portion is connected to the base, the arm body is formed with a mounting hole, the plate body is formed with a stop hole extending along the height direction of the sliding member, the mounting shaft passes through the mounting hole and then extends into the stop hole, the arm body rotates around the axis of the mounting shaft, and the mounting shaft can slide along the stop hole.

[0013] Further, the mounting portion forms a mounting cavity, the mounting shaft, the arm body, the elastic member and the plate body are all located in the mounting cavity, and the mounting portion is formed with a first avoidance groove and a second avoidance groove on the end surface close to the sliding member, the first avoidance groove and the second avoidance groove are both connected to the mounting cavity, the first avoidance groove is adapted to the locking groove, the second avoidance groove extends along the height direction of the sliding member, the locking shaft extends into the sliding groove through the first avoidance groove, and the stop pin extends into the stop groove through the second avoidance groove.

[0014] Further, the mounting portion is formed with a receiving hole;

[0015] The accommodating hole is formed on the end surface of the mounting portion close to the sliding member, one end of the mounting shaft is connected to the end surface of the mounting portion away from the sliding member, and the other end of the mounting shaft extends into the accommodating hole through the mounting hole and the stop hole; or, the accommodating hole is formed on the end surface of the mounting portion away from the sliding member, one end of the mounting shaft is connected to the end surface of the mounting portion close to the sliding member, and the other end of the mounting shaft extends into the accommodating hole through the stop hole and the mounting hole.

[0016] Furthermore, the locking assembly is located outside the base, and the base is formed with an avoidance gap, and the locking shaft extends into the sliding groove through the avoidance gap.

[0017] Furthermore, the height adjustment mechanism includes a handle connected to the sliding member.

[0018] Furthermore, a guide portion extending along the height direction of the base is formed on the inner wall surface of the accommodating cavity, and a sliding portion is formed on the outer surface of the sliding member. The sliding portion is arranged corresponding to the guide portion, and the sliding portion can perform linear motion along the guide portion.

[0019] Furthermore, a flange is formed on the outer surface of the sliding member, and a sink is formed on the inner wall surface of the accommodating cavity. When the sliding member is located at the lowest position, the flange is supported on the sink.

[0020] Another aspect of the present application provides a lawn mower, comprising:

[0021] Body;

[0022] Cutter motor;

[0023] Blade disc; and

[0024] In the height adjustment mechanism described in any of the above items, the base is arranged on the body, the sliding member forms a cavity, part of the cutter disc motor is located in the cavity and connected to the sliding member, the drive shaft of the cutter disc motor extends from the bottom of the sliding member and is connected to the cutter disc, and the sliding member slides to adjust the height of the cutter disc from the ground.

[0025] The height adjustment mechanism provided in the embodiment of the present application has a simple structure and is easy to operate. The height of the sliding member is increased by applying an upward force to the sliding member, that is, by pulling the sliding member upward. The operation is simple and convenient for users to use. The embodiment of the present application also provides a lawn mower, including the above-mentioned height adjustment mechanism. Therefore, it also has the same beneficial effects as the above-mentioned height adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a height adjustment mechanism provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 An exploded view of the mid-height adjustment mechanism, wherein the cutter head motor is shown;

[0028] Figure 3 A schematic diagram of the structure of a sliding member provided in an embodiment of the present application;

[0029] Figure 4 for Figure 1 A schematic diagram of a first state of the mid-height adjustment mechanism, wherein the locking shaft is located in the highest level locking slot;

[0030] Figure 5 for Figure 1 A schematic diagram of the second state of the mid-height adjustment mechanism, wherein the locking shaft is located in the second-high-height locking slot;

[0031] Figure 6 for Figure 1 A schematic diagram of the third state of the mid-height adjustment mechanism, wherein the locking shaft is in the avoidance position;

[0032] Figure 7 for Figure 1 A schematic diagram of the fourth state of the mid-height adjustment mechanism, wherein the locking shaft is located in the longitudinal slot and the sliding member is in the highest position;

[0033] Figure 8 for Figure 1 a schematic diagram of a fifth state of the mid-height adjustment mechanism, wherein the slide is in the lowest position;

[0034] Fig. 9 A schematic diagram of the structure of a locking assembly provided in an embodiment of the present application;

[0035] Fig.10 for Fig. 9 Exploded view of locked components;

[0036] Fig.11 for Fig. 9 A schematic diagram of a state of the locking assembly, wherein the locking shaft is in a locked position and the box cover is not shown;

[0037] Fig.12 for Fig. 9 A schematic diagram of another state of the locking assembly, wherein the locking shaft is in an avoidance position and the box cover is not shown;

[0038] Fig.13 for Fig. 9 A schematic diagram of another state of the locking assembly, wherein the locking shaft is located in the longitudinal groove and the box cover is not shown.

[0039] Description of Reference Numerals

[0040] Height adjustment mechanism 100; sliding member 10; sliding groove 10a; locking groove 11a; stop groove 10b; sliding part 10c; flange 10d; sliding body 11; sliding cover 12; base 20; accommodating cavity 20a; guiding part 20a'; sink 20a''; avoidance gap 20b; locking assembly 30; swing arm 31; arm body 311; mounting hole 311a; locking shaft 312; elastic member 32; stop plate 33; longitudinal groove 33a; transverse groove 33b; plate body 331; stop hole 331a; stop pin 332; mounting seat 34; mounting part 341; mounting cavity 341a; first avoidance groove 341b; second avoidance groove 341c; accommodating hole 341d; box body 3411; box cover 3412; mounting shaft 342; handle 40; flange 50; cutter motor 200. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0042] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the description of the present application, the "upper" and "lower" directions or positional relationships are based on the normal use of the height adjustment mechanism, such as the attached Figure 4 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and 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 should not be understood as a limitation on the present application.

[0043] See also Figure 1 to Figure 8 In one aspect, an embodiment of the present application provides a height adjustment mechanism, wherein the height adjustment mechanism 100 includes a sliding member 10, a base 20, and a locking assembly 30. The sliding member 10 is formed with a sliding groove 10a. The sliding groove 10a has a plurality of locking grooves 11a arranged in sequence and at intervals along the height direction of the sliding member 10. The base 20 is formed with a receiving chamber 20a with a top opening, and the sliding member 10 is slidably arranged in the receiving chamber 20a. The locking assembly 30 is located on one side of the sliding member 10 in the lateral direction. The locking assembly 30 includes a swing arm 31 and an elastic member 32. The swing arm 31 includes an arm body 311 and a locking shaft 312 connected to the arm body 311. Specifically, the locking shaft 312 is fixedly connected to the arm body 311. The arm body 311 can swing relative to the base 20. The locking shaft 312 has a locking position located in the locking groove 11a and an escape position that is separated from the locking groove 11a in the direction of swinging with the arm body 311. The elastic member 32 provides the swing arm 31 with an elastic force capable of driving the locking shaft 312 to move toward the locking position.

[0044] Specifically, during the upward sliding process of the sliding member 10, the sliding member 10 and the elastic member 32 drive the locking shaft 312 to switch between the locking position and the avoidance position so that the locking shaft 312 switches between the multiple locking grooves 11a in sequence. During the downward sliding process of the sliding member 10, the locking shaft 312 remains in the avoidance position.

[0045] The elastic member 32 drives the locking shaft 312 to be located at the locking position, so that the locking shaft 312 is located in the uppermost locking groove 11a (see Figure 4), at this time, the downward gravity of the sliding member 10 and the upward support force of the locking shaft 312 on the sliding member 10 are balanced, so that the sliding member 10 can be maintained at the current height. When the height of the sliding member 10 needs to be increased, an upward force is applied to the sliding member 10, and the bottom wall of the highest locking groove 11a presses against the locking shaft 312 to generate torque, and the arm 311 rotates relative to the base 20 in the first direction, and the locking shaft 312 overcomes the elastic force of the elastic member 32 and leaves the locked position (see Fig.11 ) into an avoidance position (see Fig.12 ), the sliding member 10 can slide upward. When the sliding member 10 slides upward to the second-layer locking groove 11a, the elastic member 32 drives the arm 311 to rotate in the second direction to make the locking shaft 312 enter the locking position, wherein the second direction is opposite to the first direction, so that the locking shaft 312 is locked in the second-layer locking groove 11a (see Figure 5 ). When the height of the sliding member 10 needs to be increased again, an upward force is applied to the sliding member 10 again, the bottom wall of the locking groove 11a of the second high layer presses the locking shaft 312 to generate torque, the arm body 311 rotates relative to the base 20 in the first direction, the locking shaft 312 overcomes the elastic force of the elastic member 32 and leaves the locking position and enters the avoidance position, and the sliding member 10 can slide upward. When the sliding member 10 slides upward to the next locking groove 11a of the second high layer locking groove 11a, the elastic member 32 drives the arm body 311 to rotate in the second direction so that the locking shaft 312 enters the locking position so as to lock the locking shaft 312 in the next locking groove 11a of the second high layer locking groove 11a. That is, by applying an upward force to the sliding member 10, the sliding member 10 and the elastic member 32 drive the locking shaft 312 to switch between the locking position and the avoidance position so that the locking shaft 312 switches between multiple locking grooves 11a in sequence, so as to increase the height of the sliding member 10 in sequence. When the height of the sliding member 10 needs to be lowered, force is applied to the locking shaft 312 so that the locking shaft 312 can overcome the elastic force of the elastic member 32 and remain in the avoidance position, so that the sliding member 10 can slide downward. In summary, the sliding member 10 can slide back and forth along the height direction of the base 20, thereby adjusting the height of the sliding member 10.

[0046] For example, Figure 4 and Figure 5, two layers of locking grooves 11a are shown. From top to bottom, the locking grooves 11a at the highest layer are defined as primary locking grooves, and the locking grooves 11a at the lowest layer are defined as secondary locking grooves. Assuming that the locking shaft 312 is located in the primary locking groove, the sliding member 10 is lifted upward, and the bottom wall of the primary locking groove presses the locking shaft 312 to make it disengage from the locking position and enter the avoidance position, so that the sliding member 10 can slide upward. When the secondary locking groove of the sliding member 10 rises to the locking shaft 312, the locking shaft 312 enters the locking position under the action of the elastic member 32, thereby locking the locking shaft 312 in the secondary locking groove. At this time, the entire sliding member 10 relies on the top wall of the locking groove 11a to press on the locking shaft 312, that is, the locking shaft 312 plays a supporting and positioning role for the sliding member 10. It can be understood that the above is only an exemplary embodiment of the present application, and the locking grooves 11a may include 3, 4, 5 or 6, etc., and the number of locking grooves 11a is not limited in the embodiment of the present application.

[0047] The height adjustment mechanism 100 provided in the embodiment of the present application has a simple structure and increases the height of the sliding member 10 by applying an upward force to the sliding member 10, that is, by pulling the sliding member 10 upward. It is easy to operate and convenient for users to use.

[0048] It should be noted that the lateral direction of the sliding member 10 refers to a direction intersecting with the height direction of the sliding member 10. Exemplarily, the lateral direction of the sliding member 10 may be perpendicular to the height direction of the sliding member 10. For example, the lateral direction of the sliding member 10 may be the length direction of the sliding member 10, or may be the width direction of the sliding member 10.

[0049] In one embodiment, see Figure 2 as well as Figures 9 to 13 The locking assembly 30 includes a stop plate 33 that can slide relative to the base 20. The stop plate 33 is formed with a longitudinal groove 33a extending along the height direction of the sliding member 10 and a transverse groove 33b connected to the longitudinal groove 33a. That is, the extension direction of the transverse groove 33b intersects with the extension direction of the longitudinal groove 33a, and the extension direction of the transverse groove 33b is consistent with the extension direction of the locking groove 11a. Specifically, the longitudinal groove 33a and the transverse groove 33b are roughly L-shaped. The arm body 311 is located on the side of the stop plate 33 away from the sliding member 10. The locking shaft 312 passes through the longitudinal groove 33a or the transverse groove 33b and extends into the sliding groove 10a. The stop plate 33 slides upward to allow the locking shaft 312 to enter the longitudinal groove 33a (see Fig.13 ), the locking shaft 312 is limited in the avoidance position. The stop plate 33 slides downward to allow the locking shaft 312 to leave the longitudinal groove 33a and enter the transverse groove 33b, and the locking shaft 312 can be in the locked position (see Fig.11 ) and avoidance positions (see Fig.12 )

[0050] When the locking shaft 312 is located in the longitudinal groove 33a, the side wall of the longitudinal groove 33a limits the lateral movement of the locking shaft 312 along the longitudinal groove 33a, and keeps the locking shaft 312 in the avoidance position, thereby preventing the locking shaft 312 from entering the locking groove 11a under the action of the elastic member 32 when the sliding member 10 slides to the position of the locking groove 11a. In this way, it is convenient for the sliding member 10 to slide downward. When it is necessary to sequentially increase the height of the sliding member 10, the stop plate 33 slides downward to allow the locking shaft 312 to disengage from the longitudinal groove 33a and enter the transverse groove 33b, and the locking shaft 312 can switch between the locking position and the avoidance position. In this way, when the sliding member 10 slides upward, the sliding member 10 and the elastic member 32 drive the locking shaft 312 to switch between the locking position and the avoidance position so that the locking shaft 312 switches between multiple locking grooves 11a in sequence.

[0051] In another embodiment not shown, the stop plate 33 slides downward to allow the locking shaft 312 to enter the longitudinal groove 33a, and the locking shaft 312 remains in the avoidance position; the stop plate 33 slides upward to allow the locking shaft 312 to disengage from the longitudinal groove 33a and enter the transverse groove 33b, and the locking shaft 312 can switch between the locking position and the avoidance position. When the locking shaft 312 is located in the longitudinal groove 33a, the side wall of the longitudinal groove 33a limits the lateral movement of the locking shaft 312 along the longitudinal groove 33a, and keeps the locking shaft 312 in the avoidance position, and the stop plate 33 slides upward to allow the locking shaft 312 to disengage from the longitudinal groove 33a and enter the transverse groove 33b, and the locking shaft 312 can switch between the locking position and the avoidance position.

[0052] In some embodiments, the user may directly apply force to the arm 311 or the locking shaft 312 to keep the locking shaft 312 in the avoidance position.

[0053] In one embodiment, see Figure 3~Figure 8 The sliding member 10 is formed with a stop groove 10b extending in the height direction of the sliding member 10. The stop groove 10b and the sliding groove 10a are spaced apart. Specifically, the stop groove 10b and the sliding groove 10a are spaced apart in a direction intersecting the height direction of the sliding member 10. The stop plate 33 includes a plate body 331 and a stop pin 332, a longitudinal groove 33a and a transverse groove 33b are formed on the plate body 331, and the stop pin 332 is connected to the plate body and extends into the stop groove 10b.

[0054] The stop pin 332 can abut against the bottom wall of the stop groove 10b (see Figure 6 ), so as to be pushed upward by the sliding member 10. That is, the locking shaft 312 is in Fig.12 In the avoidance position shown in FIG. 1 , the sliding member 10 slides upward, and the bottom wall of the stop groove 10 b pushes the stop pin 332 to slide upward, so that the locking shaft 312 enters the longitudinal groove 33 a (see FIG. 1 ). Fig.13 ), so that the locking shaft 312 is kept in the avoidance position, so that the sliding member 10 can rely on gravity from the highest position (see Figure 7 ) to the lowest position (see Figure 8 ). The stop pin 332 can abut against the top wall of the stop groove 10b to be pushed downward by the sliding member 10. In other words, the top wall of the stop groove 10b pushes the stop pin 332 to slide downward, so that the locking shaft 312 is separated from the longitudinal groove 33a and enters the transverse groove 33b.

[0055] The sliding member 10 is sequentially raised until the locking shaft 312 is locked in the lowest locking groove 11a (see Figure 5 ), the sliding member 10 continues to move upward, the locking shaft 312 disengages from the lowest locking groove 11a and continues to move downward along the sliding groove 10a. When the sliding member 10 moves to a certain height, the stop pin 332 abuts against the bottom wall of the stop groove 10b (see Figure 6 ), the locking shaft 312 is located at Fig.12 The sliding member 10 continues to move upward, the bottom wall of the stop slot 10b pushes the stop pin 332 to slide upward, and the stop pin 332 drives the plate body 331 to slide upward, thereby driving the locking shaft 312 to enter the longitudinal slot 33a (see Figure 7 and Fig.13 ), so that the slide 10 can be moved from the highest position (see Figure 7 ) to the lowest position (see Figure 8 ). Sliding member 10 is moved from the lowest position (see Figure 8 ) to the highest position (see Figure 7 ), the stop pin 332 can abut against the top wall of the stop groove 10b, and the top wall of the stop groove 10b pushes the stop pin 332 to slide downward, so that the locking shaft 312 leaves the longitudinal groove 33a and enters the transverse groove 33b. At this time, an upward force can be applied to the sliding member 10 to make the sliding member 10 slide upward, and the sliding member 10 and the elastic member 32 drive the locking shaft 312 to switch between the locking position and the avoidance position so that the locking shaft 312 switches between the multiple locking grooves 11a in sequence, thereby sequentially increasing the height of the sliding member 10.

[0056] Specifically, the bottom wall of the stop groove 10b is higher than the bottom wall of the sliding groove 10a. The top wall of the stop groove 10b is higher than the top wall of the sliding groove 10a. It is understood that the highest position of the sliding member 10 can be higher than the height at which the lowest locking groove 11a can lock the sliding member 10. The lowest position of the sliding member 10 can be lower than the height at which the highest locking groove 11a can lock the sliding member 10.

[0057] It should be noted that the highest position of the sliding member 10 refers to the highest height that the sliding member 10 can rise relative to the base 20. The lowest position of the sliding member 10 refers to the lowest height that the sliding member 10 can lower relative to the base 20.

[0058] In another embodiment not shown, the user may also directly apply an upward force to the stop plate 33 to slide the stop plate 33 upward, so that the locking shaft 312 enters the longitudinal groove 33a. The user may also directly apply a downward force to the stop plate 33 to slide the stop plate 33 downward, so that the locking shaft 312 leaves the longitudinal groove 33a and enters the transverse groove 33b.

[0059] In one embodiment, see Figure 9~Figure 13 The locking assembly 30 includes a mounting seat 34. The mounting seat 34 includes a mounting portion 341 and a mounting shaft 342 connected to the mounting portion 341. Specifically, the mounting shaft 342 is fixedly connected to the mounting portion 341. The mounting portion 341 is connected to the base 20, the arm body 311 is formed with a mounting hole 311a, the plate body 331 is formed with a stop hole 331a extending along the height direction of the sliding member 10, and the mounting shaft 342 passes through the mounting hole 311a and then extends into the stop hole 331a. The arm body 311 rotates around the axis of the mounting shaft 342. In this way, the arm body 311 can swing relative to the base 20. The mounting shaft 342 can slide along the stop hole 331a.

[0060] It is understandable that when the locking shaft 312 is located in the transverse groove 33b, the installation shaft 342 can abut against the top wall of the stop hole 331a, and the weight of the stop plate 33 can be supported by the installation shaft 342. Of course, the weight of the stop plate 33 can also be supported by the locking shaft 312, or the installation shaft 342 and the locking shaft 312 can jointly support the weight of the stop plate 33. When the locking shaft 312 is located in the longitudinal groove 33a, the plate body 331 slides upward, the installation shaft 342 moves relative to the plate body 331, and the installation shaft 342 slides downward along the stop hole 331a. At this time, the stop plate 33 is supported by the friction between the locking shaft 312 and the inner wall surface of the longitudinal groove 33a.

[0061] In another embodiment not shown, the mounting seat 34 may include a rotating shaft, which is located in the mounting hole 311a, so that the arm body 311 rotates around the axis of the mounting shaft 342. In this way, the arm body 311 can swing relative to the base 20. The mounting shaft 342 is located in the stop hole 331a, and the mounting shaft 342 can slide along the stop hole 331a. In other words, the arm body 311 and the plate body 331 are respectively mounted on the rotating shaft and the mounting shaft 342.

[0062] In one embodiment, see Figure 10~Figure 13The mounting portion 341 is formed with a mounting cavity 341a. The mounting shaft 342, the arm body 311, the elastic member 32 and the plate body 331 are all located in the mounting cavity 341a. The end surface of the mounting portion 341 close to the sliding member 10 is formed with a first avoidance groove 341b and a second avoidance groove 341c. The first avoidance groove 341b and the second avoidance groove 341c are both connected to the mounting cavity 341a, the first avoidance groove 341b is adapted to the locking groove 11a, and the second avoidance groove 341c extends along the height direction of the sliding member 10, the locking shaft 312 extends into the sliding groove 10a through the first avoidance groove 341b, and the stop pin 332 extends into the stop groove 10b through the second avoidance groove 341c. In this way, not only can the movement of the arm 311, the elastic member 32 and the plate 331 be protected from external interference, but the locking assembly 30 can also be assembled into an integral module in advance, which is convenient for directly assembling the locking assembly 30 onto the base 20, thereby saving assembly line time, improving assembly efficiency and reducing production costs.

[0063] In one embodiment, see Fig.10 The mounting portion 341 is formed with a receiving hole 341d, and the receiving hole 341d is formed at the end surface of the mounting portion 341 close to the sliding member 10. One end of the mounting shaft 342 is connected to the end surface of the mounting portion 341 away from the sliding member 10, and the other end of the mounting shaft 342 extends into the first receiving hole 341d through the mounting hole 311a and the stop hole 331a. Specifically, one end of the mounting shaft 342 is fixedly connected to the end surface of the mounting portion 341 away from the sliding member 10. Such a design can not only reduce the space occupied by the mounting shaft 342 in the mounting cavity 341a, making the structure of the locking assembly 30 more compact, but also prevent the stop plate 33 from sliding along the axial direction of the mounting shaft 342.

[0064] In another embodiment not shown, the receiving hole 341d is formed on the end surface of the mounting portion 341 away from the sliding member 10, one end of the mounting shaft 342 is connected to the end surface of the mounting portion 341 close to the sliding member 10, and the other end of the mounting shaft 342 extends into the receiving hole 341d through the stop hole 331a and the mounting hole 311a. Specifically, one end of the mounting shaft 342 is fixedly connected to the end surface of the mounting portion 341 close to the sliding member 10. In this way, the structure of the locking assembly 30 is also made more compact, and the stop plate 33 is prevented from sliding along the axial direction of the mounting shaft 342.

[0065] To facilitate installation of the elastic member 32, in a specific embodiment, the arm 311 is formed with a protrusion, the mounting portion 341 is formed with a groove, one end of the elastic member 32 is sleeved on the protrusion, and the other end of the elastic member 32 is accommodated in the groove. The protrusion and the groove are used to facilitate the fixed installation of the elastic member 32. In another specific embodiment, the groove is formed on the arm 311, and the protrusion is formed on the mounting portion 341. Further, the elastic member 32 is located in the mounting cavity 341a, and the inner wall surface of the mounting cavity 341a may be formed with the protrusion or the groove.

[0066] In one embodiment, see Fig.10 , the elastic member 32 is an elastic compression member, and the elastic compression member is located on the side of the locking shaft 312 away from the locking position. That is to say, the elastic compression member uses compression deformation to drive the locking shaft 312 into the locking position. For example, the elastic compression member is a compression spring. Exemplarily, during the upward sliding process of the sliding member 10, the sliding member 10 applies an upward force, the bottom wall of the highest locking groove 11a presses against the locking shaft 312 to generate torque, the arm body 311 rotates along the first direction relative to the base 20, the elastic compression member generates compression deformation, and the locking shaft 312 overcomes the elastic force of the elastic compression member to break away from the locking position and enter the avoidance position. When the sliding member 10 slides upward to the second high-level locking groove 11a, the elastic compression member restores the compression deformation to drive the arm body 311 to rotate along the second direction to allow the locking shaft 312 to enter the locking position.

[0067] In another embodiment not shown, the elastic member 32 is an elastic tensile member. The elastic tensile member is located on the side of the locking shaft 312 close to the locking position. In this way, the elastic tensile member uses tensile deformation to drive the locking shaft 312 into the locking position. For example, the elastic tensile member is a tension spring. Exemplarily, during the upward sliding process of the sliding member 10, the sliding member 10 applies an upward force, the bottom wall of the highest locking groove 11a presses against the locking shaft 312 to generate torque, the arm 311 rotates relative to the base 20 in a first direction, the elastic tensile member generates tensile deformation, and the locking shaft 312 overcomes the elastic force of the elastic tensile member to break away from the locking position and enter the avoidance position. When the sliding member 10 slides upward to the second high-level locking groove 11a, the elastic tensile member restores the tensile deformation to drive the arm 311 to rotate in the second direction to allow the locking shaft 312 to enter the locking position.

[0068] In one embodiment, see Figure 1 and Figure 2 The locking assembly 30 is located outside the base 20, and the base 20 is formed with an avoidance notch 20b, and the locking shaft 312 extends into the sliding groove 10a through the avoidance notch 20b. In this way, the locking assembly 30 can be prevented from occupying the space between the base 20 and the sliding member 10, making the structure of the height adjustment mechanism 100 more compact.

[0069] In one embodiment, see Figure 1 and Figure 2 The number of the locking assemblies 30 is multiple. The multiple locking assemblies 30 are arranged at intervals along the circumference of the sliding member 10. The sliding member 10 is locked more stably by using the multiple locking assemblies 30.

[0070] In one embodiment, see Figure 1 and Figure 2 , the number of the locking components 30 is two. The two locking components 30 are arranged on opposite sides of the sliding member 10. In this way, the forces on the opposite sides of the sliding member 10 are balanced, and the sliding of the sliding member 10 is smoother.

[0071] In one embodiment, see Figure 1 and Figure 2 The height adjustment mechanism 100 includes a handle 40 connected to the sliding member 10 , so that the user can hold the handle 40 and apply an upward force to the sliding member 10 .

[0072] In a specific embodiment, the handle 40 is rod-shaped, and both ends of the handle 40 are connected to the sliding member 10. In this way, it is convenient for the user to grasp. Both ends of the rod-shaped handle 40 can be rotatably connected to the sliding member 10. Both ends of the rod-shaped handle 40 can be fixedly connected to the sliding member 10.

[0073] Further, the handle 40 may be a rigid handle 40. A rigid handle 40 refers to a handle 40 that can maintain a structural shape. For example, a metal handle 40, a rigid plastic handle 40, etc. The handle 40 may also be a flexible handle 40. A flexible handle 40 refers to a handle 40 that can be deformed. For example, a flexible plastic handle 40, a webbing handle 40, a resin handle 40, etc. In this way, the space occupied by the handle 40 is reduced.

[0074] It should be noted that the specific shape and material of the handle 40 are not limited in this application.

[0075] In one embodiment, see Figure 2 The inner wall surface of the accommodating cavity 20a is formed with a guide portion 20a' extending in the height direction of the base 20, and the outer surface of the sliding member 10 is formed with a sliding portion 10c, which is arranged correspondingly to the guide portion 20a', and the sliding portion 10c can move linearly along the guide portion 20a'. Under the cooperative guiding action of the sliding portion 10c and the guide portion 20a', the sliding member 10 is further facilitated to move linearly in the height direction of the base 10, and the sliding member 10 is prevented from deviating from the sliding track.

[0076] In a specific embodiment, one of the sliding portion 10c and the guiding portion 20a' is a guide rail or a roller, and the other of the sliding portion 10c and the guiding portion 20a' is a slide groove.

[0077] That is to say, the sliding part 10c can be a guide rail and the guide part 20a' can be a slide groove; the sliding part 10c can be a slide groove and the guide part 20a' can be a guide rail, that is, the sliding part 10c slides along the guide part 20a' so that the sliding part 10c moves linearly along the guide part 20a'; the sliding part 10c can be a roller and the guide part 20a' can be a slide groove; the sliding part 10c can be a slide groove and the guide part 20a' can be a roller, that is, the roller rolls so that the sliding part 10c moves linearly along the guide part 20a'. By cooperating with the guide rail or the roller and the slide groove, the friction between the sliding part 10c and the guide part 20a' is reduced, so that the relative sliding between the sliding member 10 and the base 10 is smoother.

[0078] In order to better guide the sliding member 10 and prevent it from deviating from the motion trajectory, in one embodiment, see Figure 2 The number of the guide portion 20a' and the sliding portion 10c is plural.

[0079] It can be understood that, since the guide portion 20a' and the sliding portion 10c are provided correspondingly, the number of the guide portion 20a' and the sliding portion 10c are the same. For example, see Figure 2 , the number of guide parts 20a' is 4, and the number of sliding parts 10c is also 4. Of course, the number of guide parts 20a' and sliding parts 10c can also be 1, 2, 3, 5, etc. The specific number of guide parts 20a' is not limited in this application. When the guide part 20a' or the sliding part 10c is a roller, one or more rollers together constitute a guide part 20a' or a sliding part 10c. Exemplarily, the guide part 20a' and the sliding part 10c are arranged correspondingly, and one guide part 20a' can be composed of one or more rollers, and the sliding part 10c can be one slide groove arranged corresponding to one or more rollers.

[0080] In one embodiment, see Figure 2 The sliding part 10c is a guide rail, and the guiding part 20a' is a sliding groove. The sliding groove 10a and the stop groove 10b are formed on the outer surface of the sliding part 10c. In this way, the structure is more compact, which facilitates the locking assembly 30 to better lock the sliding member 10.

[0081] In one embodiment, see Figure 2 and Figure 3 The outer surface of the sliding member 10 is formed with a flange 10d, and the inner wall surface of the accommodating cavity 20a is formed with a sinking platform 20a''. When the sliding member 10 is at the lowest position, the flange 10d is supported on the sinking platform 20a''. The sinking platform 20a'' is used to keep the sliding member 10 at the lowest position.

[0082] Furthermore, a through hole communicating with the accommodating chamber 20a is formed at the bottom of the base 10, and the sliding member 10 can extend out of the through hole. It is convenient to adjust the height of the cutter head from the ground by extending the sliding member 10 out of the through hole, so that the length of the driving shaft of the cutter head motor 200 can be reduced. Since the flange 10d is supported on the sink 20a'' when the sliding member 10 is at the lowest position, the sliding member 10 can be prevented from being separated from the accommodating chamber 20a.

[0083] Specifically, the base 20 is roughly cylindrical. Of course, the shape of the large cross section of the base 20 includes but is not limited to a circle, an ellipse, a polygon, etc. The polygon can be a triangle, a quadrilateral, a pentagon, a hexagon, etc. Part of the outer surface of the base 20 is a plane, and the outer surface of the connection between the mounting portion 341 and the base 20 is also a plane. In this way, it is easy to install the mounting portion 341 on the base 20. The mounting portion 341 includes a box body 3411 and a box cover 3412, and the box body 3411 and the box cover 3412 together form a mounting cavity 341a. In other words, the mounting portion 341 is roughly box-shaped. Of course, please refer to Figure 1 , Figure 2 and Fig. 9 The cross-sectional shape of the box body 3411 may be not only a quadrilateral, but also a circle, an ellipse or a polygon, and the polygon may be a triangle, a pentagon, a hexagon, etc.

[0084] In some embodiments, the parts of the height adjustment mechanism 100 may be plastic parts, that is, some parts of the height adjustment mechanism 100 may be made of plastic, thus reducing the weight of the height adjustment mechanism 100. Of course, the parts of the height adjustment mechanism 100 may also be metal parts, thus having a stronger structural strength.

[0085] See also Figure 2 The embodiment of the present application further provides a lawn mower, which includes a machine body, a blade motor 200, a blade, and a height adjustment mechanism 100 in any one of the above embodiments. The base 10 is disposed on the machine body. The sliding member 10 is formed with a cavity, a portion of the blade motor 200 is located in the cavity and connected to the sliding member 10, a drive shaft of the blade motor 200 extends from the bottom of the sliding member 10 and is connected to the blade, and the sliding member 10 slides to adjust the height of the blade from the ground.

[0086] The height of the sliding member 10 can be raised by pulling the sliding member 10 upwards, thereby adjusting the height of the cutter disc from the ground, which is easy to operate.

[0087] Specifically, the sliding member 10 includes a sliding body 11 and a sliding cover 12. The sliding body 11 is formed with a cavity with a top opening, and the sliding cover 12 covers the opening of the cavity. The sliding cover 12 and the sliding body 11 can be welded or detachably connected, such as by clamping or bolting. The sliding groove 10a can be formed on the sliding body 11. The base 10 is fixedly connected to the body, and can be welded or detachably connected, such as by clamping or bolting.

[0088] Specifically, the height adjustment mechanism may include a flange 50 fixedly connected to the base 10, and the flange 50 is bolted to the body, so that the base 10 and the body can be detachably connected. The flange 50 and the base 10 may be an integrally formed structure, or the flange 50 and the base 10 may be a split structure fixedly connected, such as welded.

[0089] Furthermore, a through hole communicating with the accommodating cavity 20a is formed at the bottom of the base 10, and the sliding member 10 can extend out of the through hole. It is convenient to adjust the height of the cutter disc from the ground by extending the sliding member 10 out of the through hole, so that the length of the drive shaft of the cutter disc motor 200 can be reduced.

[0090] In an embodiment not shown, the lawn mower includes a travel motor, a travel mechanism and a controller. The travel mechanism is rotatably connected to the machine body, and the travel motor is used to drive the travel mechanism to move. The controller is used to control the operation of the travel motor and the cutter disc motor 200.

[0091] The walking mechanism can be a tire or a crawler. The controller can send a control signal to control the walking motor to drive the walking mechanism to move, and the controller can also control the operation of the cutter motor 200, that is, the lawn mower can be an intelligent lawn mower, also known as a lawn mowing robot.

[0092] The lawn mower of the embodiment of the present application may further include a control panel and a display screen arranged on the machine body. The control panel is electrically connected to the controller, and the control panel is used to control the controller to send out first control information for controlling the blade motor 200 and second control information for controlling the travel motor. The display screen is used to display information such as the working state of the blade motor 200, the working state of the travel motor, or the height of the blade from the ground. The blade motor 200 starts, stops, and adjusts its speed according to the first control information. The travel motor starts, stops, and adjusts its speed according to the second control information. Specifically, the control panel may be a physical button or a touch panel.

[0093] The lawn mower provided in the embodiment of the present application may include a battery for powering the blade motor 200 and / or the travel motor. The battery may be a rechargeable battery or a non-rechargeable battery. In another embodiment, the lawn mower includes a power cord electrically connected to the blade motor 200 and / or the travel motor, and the power cord can be connected to an external power source to power the blade motor 200 and / or the travel motor.

[0094] In some embodiments, the embodiments of the present application provide a mowing system, including the mower and a terminal in any of the above embodiments. The terminal sends operation information to the mower, and the mower receives the operation information and controls the controller to send the first control information and / or the second control information. In some embodiments, the mowing system may also include a server, the terminal sends the operation information to the server, and the server receives and sends the operation information to the mower.

[0095] Specifically, the lawn mower includes a communication module, through which the lawn mower can receive the operation information of the terminal, and the controller of the lawn mower sends the above-mentioned first control information and / or second control information according to the operation information controller. In some embodiments, the lawn mower can also send the operation information to the server through the communication module, and the server sends the received operation information to the terminal. Here, the communication module may include but is not limited to one or more wireless data communication modules such as a Bluetooth module, a Wireless Fidelity (Wireless Fidelity, WIFI) module, a fourth or fifth generation (4th Generation / 5th Generation, 4G / 5G) communication module or an infrared module, and may also include one or more wired data communication modules such as a serial communication module and a Universal Serial Bus (USB) module.

[0096] The terminal in the embodiment of the present application may be a mobile terminal or a fixed terminal, wherein the mobile terminal includes but is not limited to a mobile phone, a tablet computer, a laptop computer or a smart watch, etc.; the fixed terminal includes but is not limited to a desktop computer or a smart home device, etc. For example, the smart home device may be a smart TV, a smart cleaning robot, a smart refrigerator, etc. The operation information may be sent on any terminal capable of running a computer program.

[0097] The height adjustment mechanism 100 provided in the embodiment of the present application can be used not only for lawn mowers, but also for other devices that require height adjustment.

[0098] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A height adjustment mechanism, characterized in that: include: A sliding member, wherein the sliding member is formed with a sliding groove, and the sliding groove has a plurality of locking grooves arranged in sequence and at intervals along a height direction of the sliding member; A base, wherein the base is formed with a receiving cavity with a top opening, and the sliding member is slidably disposed in the receiving cavity; as well as A locking assembly is located on one lateral side of the sliding member, the locking assembly comprises a swing arm and an elastic member, the swing arm comprises an arm body and a locking shaft fixedly connected to the arm body, the arm body can swing relative to the base, the locking shaft has a locking position located in the locking groove and an escape position separated from the locking groove in the direction of the swing of the arm body, and the elastic member provides the swing arm with an elastic force that enables the locking shaft to move toward the locking position; The locking assembly includes a stop plate that can slide relative to the base, the stop plate is formed with a longitudinal groove extending along the height direction of the sliding member and a transverse groove connected to the longitudinal groove, the arm body is located on the side of the stop plate away from the sliding member, and the locking shaft passes through the longitudinal groove or the transverse groove and then extends into the sliding groove.

2. The height adjustment mechanism according to claim 1, characterized in that: The stop plate slides upward to allow the locking shaft to enter the longitudinal groove, and the locking shaft is limited to the avoidance position; the stop plate slides downward to allow the locking shaft to leave the longitudinal groove and enter the transverse groove, and the locking shaft can switch between the locking position and the avoidance position.

3. The height adjustment mechanism according to claim 2, characterized in that: The sliding member is formed with a stop groove extending in the height direction of the sliding member, the stop groove and the sliding groove are spaced apart, the stop plate comprises a plate body and a stop pin, the longitudinal groove and the transverse groove are formed on the plate body, the stop pin is connected to the plate body and extends into the stop groove; The stop pin can abut against the bottom wall of the stop groove to be pushed upward by the sliding member; the stop pin can abut against the top wall of the stop groove to be pushed downward by the sliding member.

4. The height adjustment mechanism according to claim 3, characterized in that: The locking assembly includes a mounting seat, the mounting seat includes a mounting portion and a mounting shaft connected to the mounting portion, the mounting portion is connected to the base, the arm body is formed with a mounting hole, the plate body is formed with a stop hole extending along the height direction of the sliding member, the mounting shaft passes through the mounting hole and then extends into the stop hole, the arm body rotates around the axis of the mounting shaft, and the mounting shaft can slide along the stop hole.

5. The height adjustment mechanism according to claim 4, characterized in that: The mounting portion forms a mounting cavity, and the mounting shaft, the arm body, the elastic member and the plate body are all located in the mounting cavity. The mounting portion is formed with a first avoidance groove and a second avoidance groove on the end surface close to the sliding member, and the first avoidance groove and the second avoidance groove are both connected to the mounting cavity, the first avoidance groove is adapted to the locking groove, and the second avoidance groove extends along the height direction of the sliding member, the locking shaft extends into the sliding groove through the first avoidance groove, and the stop pin extends into the stop groove through the second avoidance groove.

6. The height adjustment mechanism according to claim 5, characterized in that: The mounting portion is formed with a receiving hole; The accommodating hole is formed on the end surface of the mounting portion close to the sliding member, one end of the mounting shaft is connected to the end surface of the mounting portion away from the sliding member, and the other end of the mounting shaft extends into the accommodating hole through the mounting hole and the stop hole; or, the accommodating hole is formed on the end surface of the mounting portion away from the sliding member, one end of the mounting shaft is connected to the end surface of the mounting portion close to the sliding member, and the other end of the mounting shaft extends into the accommodating hole through the stop hole and the mounting hole.

7. The height adjustment mechanism according to any one of claims 1 to 6, characterized in that: The locking assembly is located outside the base, and an avoidance notch is formed on the base. The locking shaft extends into the sliding groove through the avoidance notch.

8. The height adjustment mechanism according to any one of claims 1 to 6, characterized in that: The height adjustment mechanism includes a handle connected to the slide.

9. The height adjustment mechanism according to any one of claims 1 to 6, characterized in that: The inner wall surface of the accommodating cavity is formed with a guide portion extending along the height direction of the base, and the outer surface of the sliding member is formed with a sliding portion. The sliding portion is arranged corresponding to the guide portion, and the sliding portion can perform linear motion along the guide portion.

10. The height adjustment mechanism according to any one of claims 1 to 6, characterized in that: A flange is formed on the outer surface of the sliding member, and a sink is formed on the inner wall surface of the accommodating cavity. When the sliding member is located at the lowest position, the flange is supported on the sink.

11. A lawn mower, characterized in that: include: Body; Cutter motor; Knife plate; as well as The height adjustment mechanism according to any one of claims 1 to 10, wherein the base is arranged on the body, the sliding member forms a cavity, a portion of the cutter disc motor is located in the cavity and is connected to the sliding member, a drive shaft of the cutter disc motor extends from the bottom of the sliding member and is connected to the cutter disc, and the sliding member slides to adjust the height of the cutter disc from the ground.

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