WO2021233205A1

WO2021233205A1 - Height adjusting mechanism and lawn mower

Info

Publication number: WO2021233205A1
Application number: PCT/CN2021/093658
Authority: WO
Inventors: 宗振国; 乔万阳; 任冠佼
Original assignee: 纳恩博（北京）科技有限公司
Priority date: 2020-05-20
Filing date: 2021-05-13
Publication date: 2021-11-25
Also published as: CN212753303U

Abstract

A height adjusting mechanism (100), comprising a base (10), a first rotating member (20), a sliding member (30), a second rotating member (40), and a gear (50). The first rotating member (20) is rotatably arranged on the base (10); a helical part (20a) is formed on the outer surface of the first rotating member (20), a transmission part (30a) matching the helical part (20a) is formed on the sliding member (30), the second rotating member (40) is located on a lateral side of the sliding member (30), a first tooth part (40a) meshing with the gear (50) is formed in the rotating circumferential direction of the second rotating member (40), the gear (50) and the first rotating member (20) are connected and arranged coaxially, the second rotating member (40) rotates to drive the gear (50) to rotate, and the gear (50) drives the first rotating member (20) to rotate, so that the sliding member (30) reciprocates linearly along the height direction of the base (10).

Description

Height adjustment mechanism and lawn mower

Cross-references to related applications

This application requires the priority and rights of a Chinese patent application with an application number of 202020853357.5 and an application date of May 20, 2020. The entire content of the above Chinese patent application is hereby incorporated into this application by reference.

Technical field

This application relates to the technical field of lawn mowers, in particular to a height adjustment mechanism and lawn mowers.

Background technique

Generally, users have different requirements for the height of the mowing. In the prior art, the height of the mowing is controlled by adjusting the height of the cutter head from the ground. Therefore, the lawn mower needs to have a height adjustment mechanism for adjusting the height of the cutter head from the ground.

Application content

In view of this, the embodiments of the present application are expected to provide a height adjustment mechanism and a lawn mower. The height adjustment mechanism has a simple structure and is easy to operate. In order to achieve the above effects, the technical solutions of the embodiments of the present application are implemented as follows:

One aspect of the embodiments of the present application provides a height adjustment mechanism, including:

Base

A first rotating part, the first rotating part is rotatably arranged on the base, and a spiral part is formed on the outer surface of the first rotating part;

A gear, the gear is connected to the first rotating part and arranged coaxially;

A sliding member formed with a transmission part that cooperates with the spiral part; and

The second rotating member is located on a lateral side of the sliding member, and a first tooth portion meshing with the gear is formed in the rotation circumference of the second rotating member;

The second rotating member rotates to drive the gear to rotate, and the gear drives the first rotating member to rotate so that the sliding member makes a linear reciprocating movement along the height direction of the base.

Further, the spiral part is an external thread, and the transmission part is an internal thread that cooperates with the external thread;

Or, the spiral part is a second tooth part, and the transmission part is a third tooth part that cooperates with the second tooth part.

Further, the second rotating member is a worm, and the gear is a worm gear that cooperates with the worm;

Or, the second rotating member is a first bevel gear, and the gear is a second bevel gear that cooperates with the first bevel gear.

Further, a portion of the sliding member extends toward the first rotating member to form a protruding portion, the protruding portion is formed with a first through hole, the inner wall of the first through hole is formed with the transmission portion, and The first rotating member is sleeved in the first through hole.

Further, the base is formed with an accommodating cavity, a side wall of the base is formed with a gap communicating with the accommodating cavity, the sliding member, the first rotating member and the gear are located in the accommodating cavity, The second rotating member is located outside the accommodating cavity, and a part of the gear protrudes from the gap and meshes with the first tooth portion.

Further, the height adjustment mechanism includes a guide post extending along the height direction of the base, the guide post is fixedly disposed in the accommodating cavity, the sliding member is formed with a guide part, and the guide part is formed along the The guide column reciprocates in a straight line.

Further, the number of the guide post is one, and the guide post and the first rotating part are located at opposite ends of the sliding part.

Further, the top wall of the accommodating cavity and the bottom wall of the accommodating cavity are respectively formed with first accommodating grooves, and two ends of the guide column are respectively located in the two first accommodating grooves.

Further, the top wall of the accommodating cavity and the bottom wall of the accommodating cavity are respectively formed with second accommodating grooves, and two ends of the first rotating member are respectively located in the two second accommodating grooves.

Further, the height adjustment mechanism includes a wear-resistant sleeve, and the wear-resistant sleeve is sleeved on the end of the first rotating part.

Further, a second through hole communicating with the containing cavity is formed at the bottom of the base, and the sliding member can extend out of the containing cavity through the second through hole.

Further, the base includes a flange plate, a cover plate and a seat body with a top opening, the cover plate covers the opening of the seat body to form the accommodating cavity, and the flange is connected to the seat body. Bottom connection.

Further, the height adjustment mechanism includes a rotating motor connected to the second rotating member, and the rotating motor drives the second rotating member to rotate.

Further, the height adjustment mechanism includes a knob connected to the second rotating member, and the knob is located on a lateral side of the base.

Another aspect of the embodiments of the present application provides a lawn mower, including:

Body

Cutter head motor;

Cutter head; and

In the height adjustment mechanism of any one of the above, the base is arranged on the body, the sliding member is formed with a cavity, and a part of the cutter head motor is located in the cavity and connected to the sliding member The drive shaft of the cutter head motor protrudes from the bottom of the sliding member and is connected to the cutter head, and the second rotating member rotates to adjust the height of the cutter head from the ground.

The height adjustment mechanism provided by the embodiments of the present application has a simple structure and convenient operation. The second rotating member is arranged on the lateral side of the sliding member, so that the force applying member for controlling the second rotating member, such as a knob, can be arranged on the lateral side of the sliding member, eliminating the need to provide the force applying member on the top of the sliding member For example, a knob is beneficial to reduce the space occupied by the height adjustment mechanism along the height direction of the base, and it is also convenient to flexibly adjust the arrangement of the components of the height adjustment mechanism according to requirements, so as to meet product design requirements. The embodiment of the present application also provides a lawn mower having the above-mentioned height adjustment mechanism. Therefore, it also has the same beneficial effects as the above-mentioned height adjustment mechanism.

Description of the drawings

FIG. 1 is a schematic structural diagram of a height adjustment mechanism provided by an embodiment of the application;

Figure 2 is a cross-sectional view in the direction of A-A in Figure 1;

Figure 3 is an exploded view of the height adjustment mechanism in Figure 1;

4 is a schematic diagram of the assembly of the first rotating member, the second rotating member and the gear in FIG. 1;

Fig. 5 is a schematic structural diagram of another height adjustment mechanism provided by an embodiment of the application;

Fig. 6 is an exploded view of the height adjustment mechanism in Fig. 5.

Description of Reference Signs

Height adjustment mechanism 100; base 10; accommodating cavity 10a; notch 10b; flange 11; cover 12; seat 13; first rotating part 20; screw part 20a; sliding part 30; The guide portion 32; the second rotating member 40; the first tooth portion 40a; the gear 50; the guide post 60; the wear sleeve 70; the knob 90; the rotating motor 80;

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the application and the technical features in the embodiments can be combined with each other. The detailed description in the specific implementation should be understood as an explanation of the purpose of the application, and should not be regarded as Improper restrictions on this application.

The application will be further described in detail below in conjunction with the drawings and specific embodiments. In the description of this application, the orientation or positional relationship of "upper", "lower", "top", "bottom" is based on the state of normal use of the height adjustment mechanism, such as the orientation or positional relationship shown in Figures 2 and 5 It needs to be understood that these orientation terms are only for the convenience of describing the application and simplifying the description, rather than indicating or implying 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 reference to the present application. Application restrictions.

1 to 6, one aspect of the embodiment of the present application provides a height adjustment mechanism. The height adjustment mechanism 100 includes a base 10, a first rotating member 20, a sliding member 30, a second rotating member 40 and a gear 50. The first rotating member 20 is rotatably disposed on the base 10. Specifically, the first rotating member 20 has a first rotating center line extending along the height direction of the base 10. The outer surface of the first rotating member 20 is formed with a spiral portion 20a. The slider 30 is formed with a transmission portion 30a that is engaged with the spiral portion 20a. The second rotating member 40 is located on a lateral side of the sliding member 30. Specifically, the second rotation member 40 has a second rotation centerline, and the second rotation centerline may be perpendicular to the first rotation centerline. A first tooth portion 40 a meshed with the gear 50 is formed in the rotation circumferential direction of the second rotating member 40. The gear 50 is connected to the first rotating member 20 and arranged coaxially. Specifically, the gear 50 is fixedly connected to the first rotating member 20. The second rotating member 40 rotates to drive the gear 50 to rotate, and the gear 50 drives the first rotating member 20 to rotate, so that the sliding member 30 makes a linear reciprocating movement along the height direction of the base 10.

Utilizing the cooperation between the second rotating part 40, the gear 50 and the first rotating part 20, the rotation of the second rotating part 40 is transformed into the rotation of the first rotating part 20 along the first rotation centerline, and the spiral part 20a and The cooperation of the transmission part 30a transforms the rotation along the first rotation center line into a linear reciprocating movement along the height direction of the base 10. In this way, it is convenient to arrange the second rotating member 40 on the lateral side of the sliding member 30, so that the force applying member for controlling the second rotating member 40, such as a knob, etc., is arranged on the lateral side of the sliding member 30. The top of 30 is provided with a force applying member such as a knob to directly control the rotation of the first rotating member, which is beneficial to reduce the space occupied by the height adjustment mechanism 100 in the height direction of the base 10, and it is also convenient to flexibly adjust the height adjustment mechanism 100 according to requirements. The layout of parts meets product design requirements.

It should be noted that the lateral direction of the slider 30 refers to a direction intersecting the height direction of the slider 30. Exemplarily, the lateral direction of the sliding member 30 may be perpendicular to the height direction of the sliding member 30. For example, the lateral direction of the slider 30 may be the length direction of the slider 30 or the width direction of the slider 30.

In one embodiment, referring to FIGS. 1 to 4, the spiral portion 20a is an external thread. The transmission part 30a is an internal thread that cooperates with an external thread. Through the cooperation of the external thread and the internal thread, the height direction of the base 10 of the sliding member 30 is linearly reciprocated.

In another embodiment, referring to FIGS. 5 and 6, the spiral portion 20a is a second tooth portion, and the transmission portion 30a is a third tooth portion that cooperates with the second tooth portion. Through the cooperation of the second tooth part and the third tooth part, the height direction of the base 10 of the sliding member 30 is linearly reciprocated.

In one embodiment, referring to FIGS. 1 to 6, the second rotating member 40 is a worm, and the gear 50 is a worm gear that cooperates with the worm. In this way, the first rotation center line and the second rotation center line are staggered and perpendicular, that is to say, the first rotation center line and the second rotation center line are driven by different-surface shafts, and the first rotating member 20 is driven along the axis through the cooperation of the worm and the worm wheel. The first rotation center line rotates, so that the height direction of the base 10 of the sliding member 30 performs linear reciprocating motion, the worm occupies a smaller space, and the structure of the height adjustment mechanism 100 is more compact.

In another embodiment not shown, the second rotating member 40 is a first bevel gear, and the gear 50 is a second bevel gear that cooperates with the first bevel gear. In this way, the first rotation center line and the second rotation center line are driven by intersecting shafts, and the first bevel gear and the second bevel gear cooperate to make the first rotating part 20 rotate along the first rotation center line, thereby making the sliding part 30 base Do linear reciprocating motion in the height direction of 10.

It can be understood that the cooperation between the first rotating part 20, the gear 50, and the second rotating part 40 may be that the spiral part 20a is an external thread, the transmission part 30a is an internal thread that cooperates with the external thread, and the second rotating part 40 is a worm, and gear 50 is a worm gear matched with a worm; or, the spiral part 20a is a second tooth part, the transmission part 30a is a third tooth part matched with the second tooth part, and the second rotating member 40 is a worm, The gear 50 is a worm gear that cooperates with a worm. It can also be that the spiral portion 20a is a second tooth portion, the transmission portion 30a is a third tooth portion that cooperates with the second tooth portion, and the second rotating member 40 is a first bevel gear. 50 is a second bevel gear that cooperates with the first bevel gear; alternatively, the spiral portion 20a is a second tooth portion, the transmission portion 30a is a third tooth portion that cooperates with the second tooth portion, and the second rotating member 40 is a second tooth portion. A bevel gear, and the gear 50 is a second bevel gear and the like that cooperate with the first bevel gear. That is to say, the cooperation between the first rotating member 20, the gear 50, and the second rotating member 40 includes but is not limited to the above-exemplified matching forms. Those skilled in the art can combine according to the structure of the embodiment of the present application. No more explanations one by one.

In one embodiment, referring to FIGS. 2 and 3, a portion of the sliding member 30 extends toward the first rotating member 20 to form a protruding portion 31, the protruding portion 31 is formed with a first through hole, and the inner wall of the first through hole is formed There is a transmission part 30a, and the first rotating member 20 is sleeved in the first through hole. With such a design, the first rotating member 20 can be used to limit the sliding member 30, so as to prevent the sliding member 30 from deviating from the first rotating member 20, causing the spiral portion 20a and the transmission portion 30a to fail to achieve effective cooperation.

Further, in a state where the slider 30 is at the lowest position, the protruding portion 31 is supported on the gear 50. In this way, the gear 50 is used to carry part of the weight of the sliding member 30, and the protrusion 31 is prevented from being suspended.

Specifically, the transmission portion 30a formed on the inner wall of the first through hole is an internal thread, and the spiral portion 20a of the first rotating member 20 is an external thread. Of course, it is also possible that the spiral portion 20a of the first rotating member 20 is a second tooth portion, and the transmission portion 30a formed by the inner wall of the first through hole is a third tooth portion that cooperates with the second tooth portion.

In another embodiment, referring to FIGS. 5 and 6, the spiral portion 20a is a second tooth portion, and the outer surface of the sliding member 30 forms a third tooth portion that cooperates with the second tooth portion.

In one embodiment, referring to FIGS. 2 and 3, the base 10 is formed with a receiving cavity 10a. The side wall of the base 10 is formed with a notch 10b communicating with the accommodating cavity 10a. The sliding member 30, the first rotating member 20 and the gear 50 are located in the accommodating cavity 10a, and the second rotating member 40 is located outside the accommodating cavity 10a. Part of the gear 50 protrudes from the notch 10b and meshes with the first tooth portion 40a. Not only can the accommodating cavity 10a be used to protect the structural safety of the sliding member 30, the first rotating member 20 and the gear 50, but also the cooperative movement between the sliding member 30, the first rotating member 20 and the gear 50 can be protected from interference. Since the second rotation member 40 has a second rotation centerline, and the second rotation centerline intersects the height direction of the base 10, the second rotation member 40 is located outside the accommodating cavity 10a, which is beneficial to reduce the second rotation of the accommodating cavity 10a. The size in the direction of the center line reduces the volume of the accommodating cavity 10a, makes the internal structure of the accommodating cavity 10a more compact, and prevents the sliding member 30 from shaking in the accommodating cavity 10a. It is also convenient to assemble the height adjustment mechanism 100 into an integral module in advance, which can save assembly line assembly time, improve assembly efficiency, and reduce production costs.

In one embodiment, referring to FIGS. 2 and 3, the height adjustment mechanism 100 includes a guide post 60 extending along the height direction of the base 10. The guide post 60 is fixedly disposed in the accommodating cavity 10a. The sliding member 30 is formed with a guide portion 32, and the guide portion 32 linearly reciprocates along the guide post 60. The cooperation of the guide portion 32 and the guide post 60 is used to guide the sliding member 30 to prevent the sliding member 30 from deviating from the sliding track.

It should be noted that the shape of the cross section of the guide post 60 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.

In one embodiment, referring to FIGS. 2 and 3, the number of the guide post 60 is one, and the guide post 60 and the first rotating member 20 are located at opposite ends of the sliding member 30. In this way, the forces on the sliding member 30 are more balanced, which facilitates smoother sliding of the sliding member 30.

In some embodiments, there may be more than one guide post 60, the sliding member 30 is formed with a plurality of guide portions 32, the guide posts 60 and the guide portions 32 are correspondingly arranged, and the plurality of guide posts 60 are distributed at intervals along the circumferential direction of the sliding member 30. .

In a specific embodiment, a portion of the sliding member 30 extends toward the guide post 60 to form a guide portion 32, and the guide portion 32 is sleeved on the guide post 60. Such a design not only facilitates the cooperation between the guide portion 32 and the guide post 60 to guide the sliding member 30, but also can use the guide post 60 to limit the sliding member 30 to further prevent the sliding member 30 from deviating from the first rotating member 20 to cause a spiral The part 20a and the transmission part 30a cannot achieve effective cooperation.

Specifically, the guide portion 32 has a guide hole adapted to the guide post 60, and the guide post 60 penetrates through the guide hole so that the guide portion 32 performs linear reciprocating movement along the guide post 60. The guide portion 32 may also have a guide groove that cooperates with the guide post 60, and the guide post 60 abuts against the groove wall surface of the guide groove, so that the guide portion 32 makes a linear reciprocating movement along the guide post 60.

In an embodiment, referring to FIGS. 2 and 3, the top wall of the accommodating cavity 10a and the bottom wall of the accommodating cavity 10a are respectively formed with first accommodating grooves, and two ends of the guide post 60 are respectively located in the two first accommodating grooves . The guide post 60 is fixed in the accommodating cavity 10a through the first accommodating groove, which has a simple structure and is convenient for manufacturing.

In one embodiment, referring to FIGS. 2 and 3, the top wall of the accommodating cavity 10a and the bottom wall of the accommodating cavity 10a are respectively formed with second accommodating grooves, and both ends of the first rotating member 20 are respectively located in the two second accommodating grooves. In the slot. The two ends of the first rotating member 20 are fixed in the accommodating cavity 10a through the second accommodating groove, which has a simple structure and is convenient for manufacturing.

In one embodiment, referring to FIG. 2, the height adjustment mechanism 100 includes a wear-resistant sleeve 70, and the wear-resistant sleeve 70 is sleeved on the end of the first rotating member 20. The wear sleeve 70 avoids excessive wear of the first rotating member 20.

In some embodiments, referring to FIG. 2 and FIG. 3, a wear-resistant sleeve 70 may also be sleeved on the end of the guide post 60.

Preferably, the wear-resistant sleeve 70 can be made of organic materials such as polytetrafluoroethylene and polyamide fibers.

In one embodiment, referring to FIG. 2, the bottom of the base 10 is formed with a second through hole communicating with the accommodating cavity 10 a, and the sliding member 30 can extend out of the accommodating cavity 10 a through the second through hole. In this way, the height of the accommodating cavity 10a can be further reduced, thereby further reducing the volume of the base 10, so that the height adjustment mechanism 100 further meets the requirements of miniaturization.

In one embodiment, referring to FIGS. 1 to 3, the base 10 includes a flange 11, a cover plate 12, and a seat body 13 with an opening at the top. The cover plate 12 covers the opening of the seat body 13 to form a accommodating cavity 10a. The blue plate 11 is connected to the bottom of the base 13. Specifically, the flange 11 is fixedly connected to the bottom of the seat 13. The flange 11 facilitates the quick assembly and disassembly of the seat body 13. The sliding member 30 can be put into the accommodating cavity 10a through the top opening of the seat body 13, and the cover plate 12 and the seat body 13 can be welded, or can be detachably connected by screwing or clamping.

In a specific embodiment, referring to FIG. 2 and FIG. 3, the first receiving groove and the second receiving groove are formed on the opposite end surfaces of the base 13 and the cover 12. The second through hole is formed at the bottom of the seat body 13, one end of the guide post 60 is accommodated in the second receiving groove of the seat body 13, the sliding member 30 is put into the accommodating cavity 10a from the top opening of the seat body 13, and the sliding member 30 The guide portion 32 of the sliding member is matched with the guide post 60, one end of the first rotating member 20 is accommodated in the first receiving groove of the base 13, the transmission portion 30a of the sliding member 30 is matched with the first rotating member 20, and the cover plate 12 is closed The top of the base 13 is open, the other end of the first rotating member 20 is received in the first receiving groove of the cover 12, and the other end of the guide post 60 is received in the second receiving groove of the cover 12. In this way, the height adjustment mechanism 100 can be quickly assembled, which can save assembly line assembly time, improve assembly efficiency, and reduce production costs.

Preferably, the flange 11 and the seat body 13 may be an integral structure, and the flange 11 and the seat body 13 may also be a separate structure connected by a fixed connection, such as a welding connection.

In some embodiments, the parts of the height adjustment mechanism 100 may be plastic parts, that is, the parts of the height adjustment mechanism 100 may be made of plastic, so that the weight of the height adjustment mechanism 100 can be reduced. Of course, the parts of the height adjustment mechanism 100 may also be metal parts, so that it has strong structural strength.

In an embodiment, the height adjustment mechanism 100 includes a rotating motor 80 connected to the second rotating member 40, and the rotating motor 80 drives the second rotating member 40 to rotate. Specifically, the rotating motor 80 is fixedly connected to the second rotating member 40. In this way, the degree of automation of the height adjustment mechanism 100 is improved.

In another embodiment, referring to FIGS. 1 to 3, the height adjustment mechanism 100 includes a knob 90 connected to the second rotating member 40, and the knob 90 is located on a lateral side of the base 10. Specifically, the knob 90 is fixedly connected to the second rotating member 40. In this way, the knob 90 is prevented from occupying the space at the top of the height adjustment mechanism. In other words, it can avoid that the knob 90 occupies the top space of the lawn mower and affects the structural design of the lawn mower.

The knob 90 may be a long strip, so that it is convenient for the user to pinch the long knob 90 with the index finger and thumb to force the second rotating member 40 to rotate. It may also be that the end surface of the knob 90 away from the second rotating member 40 is formed with at least two sinking platforms arranged at intervals, so that it is convenient for the user to grasp the knob 90 through the sinking platform to rotate the second rotating member 40. The knob 90 may also have a disc shape, and the user can grasp the disc to rotate the second rotating member 40. The above is an exemplary structure of the knob 90 provided in the embodiment of the application, and the specific shape and structure of the knob 90 are not limited in the embodiment of the application.

1 to 3, another aspect of the embodiments of the present application provides a lawn mower. The lawn mower includes a body, a cutter head motor 200, a cutter head, and the height adjustment mechanism 100 provided by any one of the above embodiments. The base 10 is arranged on the body. The sliding member 30 is formed with a cavity, and a part of the cutter head motor 200 is located in the cavity and connected to the sliding part 30. The drive shaft of the cutter head motor 200 extends from the bottom of the sliding part 30 and is connected to the cutter head. The second rotating part 40 Rotate to adjust the height of the cutter head from the ground.

By rotating the second rotating member 40 to adjust the height of the cutter head from the ground, the operation is convenient and fast. Since the second rotating member 40 provided by the embodiment of the present application is located on the lateral side of the sliding member 30, the force application member for controlling the second rotating member 40, such as the knob 90, is arranged on the lateral side of the body, eliminating the need for A force applying component, such as a knob 90, is provided on the top to directly control the rotation of the first rotating member 20, which can effectively reduce the overall height of the lawn mower, so that the lawn mower can be made smaller and more compact. It is also convenient to flexibly adjust the layout of other structures in the lawn mower according to requirements to meet product design requirements. Illustratively, it is convenient to flexibly set the knob 90 in the lateral direction of the machine body, avoiding occupying the top space of the machine body, and facilitating the installation of the machine body. Other structures are set on the top. Exemplarily, the saved top space of the body can be used to set up structures such as display screens, operation panels, warning stickers, etc., so that users can directly view the information on the display screens, warning stickers, and facilitate users to directly operate the control panel.

The cutter head motor 200 may be fixedly connected to the sliding member 30, and may be a detachable connection method such as a screw connection or a snap connection. The base 10 and the machine body can be connected with the machine body through a flange 11 and the machine body by bolts, which facilitates the assembly and disassembly of the base 10.

In a specific embodiment, referring to FIG. 2, a second through hole communicating with the receiving cavity 10 a is formed at the bottom of the base 10, and the sliding member 30 can extend out of the receiving cavity 10 a through the second through hole. It is convenient to adjust the height of the cutter head from the ground through the sliding member 30 extending out of the second through hole. In this way, the length of the drive shaft of the cutter head motor 200 can be reduced.

It should be noted that the lateral direction of the body refers to the direction that intersects the height direction of the body. Exemplarily, the lateral direction of the body may be perpendicular to the height direction of the body. For example, the lateral direction of the body may be the length direction of the body or the width direction of the body. The height direction of the slider is consistent with the height direction of the body.

In one embodiment, referring to Figures 5 and 6, the lawn mower includes a walking motor, a walking mechanism, and a controller. The walking mechanism is rotatably connected with the machine body, and the walking motor is used to drive the walking mechanism to move. The controller is used to control the rotating motor 80, the cutter head motor 200, and the walking motor. 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 head motor 200, that is, the lawn mower can be an intelligent lawn mower also called a lawn mower robot.

The lawn mower of the embodiment of the present application may further include a control panel and a display screen arranged on the body. The control panel is electrically connected to the controller, and the control panel is used to control the controller to send out the first control information for controlling the cutter head motor 200, the second control information for controlling the walking motor, and the third control information for controlling the rotating motor 80. The display screen is used to display information such as the working state of the cutter head motor 200, the working state of the walking motor, or the height of the cutter head from the ground. The cutter head motor 200 starts, stops, and adjusts the speed according to the first control information. The walking motor starts, stops and adjusts the speed according to the second control information. The rotating motor 80 starts, stops, and adjusts the speed according to the second control information. Specifically, the control panel can be a physical button or a touch panel.

The lawn mower provided in the embodiment of the present application may include a battery for supplying power to the cutter head motor 200, the walking motor and/or the rotating motor 80. 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 cutter head motor 200, the walking motor and/or the rotating motor 80, and the power cord can be connected to an external power source to provide the cutter head motor 200, the walking motor and/or Rotate the motor 80 to supply power.

In some embodiments, an embodiment of the present application provides a lawn mower system, including the lawn mower and terminal in any one of the above embodiments. The terminal sends operation information to the lawn mower, and the lawn mower receives the operation information and controls the controller to issue the above-mentioned first control information, second control information and/or third control information. In some embodiments, the mowing system may further include a server. The terminal sends operation information to the server, and the server receives and sends the above operation information to the lawn mower.

Specifically, the lawn mower includes a communication module through which the lawn mower can receive operation information from the terminal, and the controller of the lawn mower sends the first control information, the second control information, and/or the third control information according to the operation information. . In some embodiments, the lawn mower may also send 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, wireless data communication such as Bluetooth module, Wireless Fidelity (WIFI) module, fourth or fifth generation (4th Generation/5th Generation, 4G/5G) communication module or infrared module. One or more of the modules may also include one or more of wired data communication modules such as a serial port communication module and a universal serial bus (Universal Serial Bus, USB) module.

The terminals in the embodiments of the present application may be mobile terminals or fixed terminals. Among them, mobile terminals include but are not limited to mobile phones, tablets, laptops or smart watches, etc.; fixed terminals include but are not limited to desktop computers or smart home devices, etc. . Exemplarily, the smart home device may be a smart TV, a smart cleaning robot, a smart refrigerator, and the like. The operation information can be sent out on any terminal that can run a computer program.

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

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Covered in the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A height adjustment mechanism, characterized in that it comprises:

Base

A first rotating part, the first rotating part is rotatably arranged on the base, and a spiral part is formed on the outer surface of the first rotating part;

A gear, the gear is connected to the first rotating part and arranged coaxially;

A sliding member formed with a transmission part that cooperates with the spiral part; and

The second rotating member is located on a lateral side of the sliding member, and a first tooth portion meshing with the gear is formed in the rotation circumferential direction of the second rotating member;

The second rotating member rotates to drive the gear to rotate, and the gear drives the first rotating member to rotate so that the sliding member makes a linear reciprocating movement along the height direction of the base.
The height adjustment mechanism according to claim 1, wherein the spiral part is an external thread, and the transmission part is an internal thread that cooperates with the external thread;

Or, the spiral part is a second tooth part, and the transmission part is a third tooth part that cooperates with the second tooth part.
The height adjustment mechanism according to claim 1 or 2, wherein the second rotating member is a worm, and the gear is a worm gear that cooperates with the worm;

Or, the second rotating member is a first bevel gear, and the gear is a second bevel gear that cooperates with the first bevel gear.
The height adjustment mechanism according to any one of claims 1 to 3, wherein a portion of the sliding member extends toward the first rotating member to form a protruding portion, and the protruding portion is formed with a first through hole , The transmission part is formed on the inner wall of the first through hole, and the first rotating member is sleeved in the first through hole.
The height adjustment mechanism according to any one of claims 1 to 4, wherein the base is formed with a receiving cavity, a side wall of the base is formed with a notch communicating with the receiving cavity, and the sliding member, The first rotating member and the gear are located in the accommodating cavity, the second rotating member is located outside the accommodating cavity, and a part of the gear protrudes from the gap and meshes with the first tooth portion.
The height adjustment mechanism according to claim 5, wherein the height adjustment mechanism comprises a guide post extending along the height direction of the base, the guide post is fixedly arranged in the accommodating cavity, and the sliding The member is formed with a guide part, which reciprocates linearly along the guide post.
The height adjustment mechanism according to claim 6, wherein the number of the guide post is one, and the guide post and the first rotating part are located at opposite ends of the sliding part.
The height adjustment mechanism according to claim 6 or 7, wherein the top wall of the accommodating cavity and the bottom wall of the accommodating cavity are respectively formed with first accommodating grooves, and two ends of the guide column are respectively located at two In the first containing groove.
The height adjustment mechanism according to any one of claims 5 to 8, wherein the top wall of the accommodating cavity and the bottom wall of the accommodating cavity are respectively formed with second accommodating grooves, and the first rotating member The two ends are respectively located in the two second containing grooves.
The height adjustment mechanism according to claim 9, wherein the height adjustment mechanism comprises a wear-resistant sleeve, and the wear-resistant sleeve is sleeved on an end of the first rotating member.
The height adjustment mechanism according to any one of claims 5 to 10, wherein the bottom of the base is formed with a second through hole communicating with the accommodating cavity, and the sliding member can pass through the second through hole. The hole extends out of the receiving cavity.
The height adjustment mechanism according to any one of claims 5 to 11, wherein the base includes a flange, a cover plate and a seat body with an opening at the top, and the cover plate covers the opening of the seat body to The accommodating cavity is formed, and the flange is connected with the bottom of the seat body.
The height adjustment mechanism according to any one of claims 1 to 12, wherein the height adjustment mechanism comprises a rotating motor connected to the second rotating member, and the rotating motor drives the second rotating member to rotate .
The height adjustment mechanism according to any one of claims 1 to 12, wherein the height adjustment mechanism comprises a knob, the knob is connected to the second rotating part, and the knob is located in the lateral direction of the base. One side.
A lawn mower, characterized by comprising:

Body

Cutter head motor;

Cutter head; and

The height adjustment mechanism according to any one of claims 1 to 14, wherein the base is provided on the body, the sliding member is formed with a cavity, and a part of the cutter head motor is located in the cavity and is in contact with the body. The sliding part is connected, the drive shaft of the cutter head motor protrudes from the bottom of the sliding part and is connected with the cutter head, and the second rotating part rotates to adjust the height of the cutter head from the ground.