A gear adjustment knob and automatic walking device

Abstract

A gear adjustment knob and an automatic driving device, comprising a knob, wherein the knob body is directly arranged on the outside of the housing of the automatic driving device for direct operation by a user; a connecting structure is fixedly connected to the lower side of the knob, and the lower side of the connecting structure is fixedly connected to an adjustment component. The present invention can maintain the knob body in a state of abutting against the outer side of the housing under the pressure of an elastic connecting member arranged inside the knob body and abutting against the top of the connecting structure. At the same time, the present invention can also maintain the knob connected to the adjustment component as a whole through the connecting structure through the cooperation of the connecting structure and the positioning cavity on the bottom of the knob, so that the knob and the adjustment component can be independent of the housing of the automatic driving device, and will not affect the response and detection of the housing to collision.

Description

Technical Field

[0001] The invention relates to the field of garden tools, and in particular to a gear adjustment knob and an automatic walking device. Background Art

[0002] On automatic walking equipment such as lawn mowing robots, a gear adjustment knob is provided for adjusting the height of the blade of the lawn mowing robot or the corresponding working tool. The outer shell of the automatic walking equipment is usually movably connected to the internal body through a connecting structure. Therefore, during the operation of the automatic walking equipment, when its outer shell collides with an object or the outer shell is lifted, a relative displacement can occur between the outer shell and the internal body. The machine can detect this displacement relative to the body through a sensor provided on the inner side of the outer shell, and thereby determine the direction in which the automatic walking equipment collides with the object, or determine the state of the automatic walking equipment being lifted, and then drive the automatic walking equipment to perform an avoidance action.

[0003] The gear adjustment knob of the existing automatic walking device is usually arranged on the internal body and located inside the outer shell. In order to match the internal knob structure, it is usually necessary to set a cover body that can be opened on the outer shell of the automatic walking device at the position corresponding to the knob. The user must open the cover body before operating the gear adjustment knob on the internal body of the device. Due to the need to set a cover body, the existing knob structure will cause the outer shell structure of the automatic walking device to be complicated, and it is not convenient for the user to adjust the working tool of the automatic walking device. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a gear adjustment knob and an automatic walking device. By connecting the knob with the adjustment component, the knob body can be arranged outside the body shell of the automatic walking device, which is convenient for adjusting the gear of the adjustment component without affecting the relative movement of the shell and the knob.

[0005] To achieve the above-mentioned purpose, the present invention provides a gear adjustment knob device, which includes: a knob, which includes a knob body arranged on the outside of the shell of the automatic walking device; a connecting structure, whose lower end is fixedly connected to the adjustment component on the inside of the shell of the automatic walking device, and whose upper end is connected to the knob; the knob can move up and down along the connecting structure, and keep consistent with the movement of the shell in the up and down direction; the movement of the knob and the connecting structure in the front and back directions is consistent, and remains relatively independent from the movement of the shell in the front and back directions.

[0006] Optionally, in any of the gear adjustment devices described above, the knob further comprises: a knob connector, an upper portion of which is connected to the knob body, the knob connector is sleeved on the connecting structure and rotates synchronously with the connecting structure.

[0007] Optionally, a gear adjustment device as described in any of the above, wherein the knob connector includes: an inner cavity, which is arranged at the upper part of the knob connector, for accommodating the upper end of the connecting structure; an upper positioning cavity, which is arranged on the bottom outer side of the inner cavity, and the upper positioning cavity is arranged in the outer shell.

[0008] Optionally, the gear adjustment device as described in any of the above further includes an elastic connecting member, the upper end of the elastic connecting member is connected to the upper end of the connecting structure, and the lower end of the elastic connecting member is connected to the knob connecting member.

[0009] Optionally, a gear adjustment device as described above, wherein an elastic connecting member is arranged between the upper end of the connecting structure and the bottom surface of the inner cavity; and the knob body abuts against the outer surface of the outer shell under the pressure of the elastic connecting member.

[0010] Optionally, in a gear adjustment device as described in any of the above, a through hole is provided on the housing of the automatic walking device, the lower end portion of the knob is provided in the through hole, and a gap is provided between the through hole and the knob.

[0011] Optionally, in a gear adjustment device as described above, an upper portion of the connecting structure is installed in an inner cavity, and the inner cavity can move up and down along the upper portion of the connecting structure.

[0012] Optionally, a gear adjustment device as described above, wherein the middle portion of the connecting structure is installed in an upper positioning cavity, the upper positioning cavity can move up and down along the middle portion of the connecting structure, and the middle portion of the connecting structure can be driven by the upper positioning cavity to perform rotational motion.

[0013] Optionally, a gear adjustment device as described in any of the above, wherein the connecting structure includes: a connecting seat arranged in the middle of the connecting mechanism, a bottom end of which is fixedly connected to the top of the adjustment assembly, and a top end of which is installed in the upper positioning cavity; a core shaft, which is fixedly connected to the top of the connecting seat and installed in the inner cavity of the knob; and the elastic connecting member abuts between the top of the core shaft and the inner bottom end of the inner cavity.

[0014] Optionally, a gear adjustment device as described in any of the above, wherein the connecting seat is a prismatic structure, or a guide structure is provided on the outer side surface of the connecting seat, and the cross-sectional area of ​​the connecting seat is larger than the cross-sectional area of ​​the core shaft; the inner wall of the upper positioning cavity is attached to the outer side surface of the connecting seat, the upper positioning cavity can move up and down along the connecting seat, and the connecting seat can be driven by the upper positioning cavity to rotate synchronously.

[0015] Optionally, in a gear adjustment device as described above, the guide structure protrudes from the outer side surface of the connecting seat and fits with the inner wall of the upper positioning cavity to limit the rotation of the connecting seat relative to the upper positioning cavity.

[0016] Optionally, a gear adjustment device as described in any of the above, wherein the connecting structure includes: a lower screw, whose bottom end is fixedly connected to the top of the adjusting component, and whose top end is arranged on the top outer side of the adjusting component; a connecting block, whose bottom end is fixedly connected to the top of the lower screw, and whose top end is installed in the upper positioning cavity; an upper screw, whose bottom end is fixedly connected to the top of the connecting block, and whose top end is installed in the inner cavity of the knob; and the elastic connecting member abuts between the top of the upper screw and the inner bottom end of the inner cavity.

[0017] Optionally, a gear adjustment device as described in any of the above, wherein a lower positioning hole is also provided on the top of the adjustment component, and the bottom end of the connecting block is installed in the lower positioning hole; the connecting block is a prismatic structure, and its cross-sectional area is larger than the cross-sectional area of ​​the upper screw; the inner wall of the upper positioning cavity is attached to the outer side surface of the connecting block, the upper positioning cavity can move up and down along the connecting block, and the connecting block can be driven and rotate synchronously with the upper positioning cavity.

[0018] Optionally, a gear adjustment device as described in any of the above, wherein the adjustment component includes: an adjustment cylinder, which is arranged at the bottom of the adjustment component; an adjustment cover, which is arranged at the top of the adjustment cylinder; and the bottom of the connecting structure is fixedly connected to the top of the adjustment cover.

[0019] At the same time, the present invention also provides an automatic walking device, which is provided with any gear adjustment device as described above.

[0020] Compared with the existing solutions, the present invention has the following technical effects:

[0021] 1. The present invention directly sets the knob body at the top of the knob on the outside of the housing of the self-propelled device to facilitate direct operation by the user, and to facilitate adjustment of the height of the working part of the self-propelled device from the ground. At the same time, this method of directly setting the knob outside the machine housing can also simplify the housing structure.

[0022] 2. The knob structure provided by the present invention has a connection structure fixedly connected to its lower side, and the lower side of the connection structure is fixedly connected to the adjustment component, so that the present invention can maintain the knob body in a state of abutment and close to the outer side of the shell under the pressure of the elastic connection member arranged inside the knob body and abutting the top of the connection structure. At the same time, the present invention can also cooperate with the upper positioning cavity arranged at the bottom of the knob through the connection structure to keep the knob connected to the adjustment component as a whole through the connection structure, so that the knob and the adjustment component can be independent of the shell of the automatic walking device to form a separate control transmission system. Therefore, although the knob of the present invention is arranged on the outside of the shell, it does not need to be connected and fixed through the shell, but is directly connected to the adjustment component as a whole through the internal structure. Therefore, the knob of the present invention will not affect the response and detection of the shell to the collision, and the knob can move independently from the shell.

[0023] 3. Furthermore, under the pressure of the elastic connector, the knob body is pressed down by the elastic connector to maintain abutment and close to the outer side of the shell. When the shell of the autonomous walking device is lifted, the knob body is lifted together with the shell and keeps in contact with the shell. The elastic connector can provide a certain deformation, so that the shell can drive the knob body to move upward together.

[0024] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 is an exploded view of the structure of Example 1;

[0027] Figure 2 is a schematic diagram of the structure of the regulating component;

[0028] Figure 3 It is a schematic diagram of the knob structure;

[0029] Figure 4 is a cross-sectional view of embodiment 1 in the connected state;

[0030] Figure 5 is an exploded view of the structure of Example 2;

[0031] Figure 6 It is a cross-sectional view of Example 2 in the connected state.

[0032] In the figure, 1 is the adjustment assembly; 1a is the adjustment cylinder; 1b is the adjustment cover; 2 is the knob; 3 is the connecting block; 4 is the upper screw; 5 is the lower screw; 6 is the spring; 7 is the gasket; 8 is the top cover; 9 is the outer shell; 10 is the fuselage; 11 is the connecting seat; 12 is the core shaft; 13 is the clamp; 101 is the lower positioning hole; 201 is the inner cavity; 202 is the upper positioning cavity. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] The meaning of "inside" and "outside" mentioned in the present invention refers to the direction from the knob body to the internal adjustment component of the fuselage relative to the gear adjustment knob device itself, and the opposite direction is outside; it is not a specific limitation on the device mechanism of the present invention.

[0035] The term “connection” as used in the present invention may mean a direct connection between components or an indirect connection between components via other components.

[0036] The meaning of "top end" or "bottom end" mentioned in the present invention refers to that when the user is facing the automatic walking device, the direction from the adjustment component to the end of the knob body outside the shell is the direction of the top end, and vice versa is the direction of the bottom end, rather than a specific limitation on the device mechanism of the present invention.

[0037] The meaning of "up" and "down" in the present invention refers to the direction from the adjustment component to the end of the knob body outside the shell when the user is facing the automatic walking device, which is up, and the opposite direction is down, rather than a specific limitation on the device mechanism of the present invention.

[0038] The present invention provides a gear adjustment knob device for an automatic walking device such as a lawn mowing robot, which comprises:

[0039] The knob 2 includes a knob body arranged outside the housing 9 of the automatic walking device;

[0040] A connecting structure, the lower end of which is fixedly connected to the adjusting component 1 of the automatic walking device, and the upper end of which is connected to the knob 2;

[0041] An elastic connecting member, which is arranged between the upper end of the connecting structure and the knob 2;

[0042] The knob body abuts against the outer surface of the housing 9 under the pressure of the elastic connecting member.

[0043] The automatic walking device of the present invention only needs to be provided with a hole on its outer shell for connecting the bottom of the knob to the adjusting component 1 inside the outer shell. There is no fixed connection structure directly connected between the knob of the present invention and the outer shell of the automatic walking device. The gear adjustment knob device of the present invention connects the knob to the adjusting component 1 through a connecting structure, so that the knob body 2 is not directly fixedly connected to the outer shell, but is arranged above the outer shell through an internal connecting structure or through the cooperation between the connecting structure and the elastic connecting member. As a result, the gear adjustment knob device of the present invention is relatively independent of the outer shell of the automatic walking device, and the two can move relative to each other without affecting each other, and there is no need to set a cover plate on the outer shell, thereby simplifying the outer shell structure while making it convenient for users to operate the knob.

[0044] The knob 2 may be configured to include:

[0045] The knob body is located outside the housing 9 of the automatic walking device and is used for the user to operate and rotate the knob;

[0046] The knob connecting piece has an upper portion connected to the knob body, and the knob connecting piece is sleeved on the connecting structure and rotates synchronously with the connecting structure.

[0047] The connecting structure is fixedly connected to the adjusting component 1 on the inner side of the housing 9 of the automatic walking device at its lower end, and connected to the knob body arranged on the outer side of the housing 9 of the automatic walking device at its upper end, so that the knob 2 can move up and down along the connecting structure, and ensure that the knob 2 keeps consistent with the movement of the housing 9 in the up and down direction. At the same time, the connecting structure can keep the movement of the knob 2 and the connecting structure in the front and back directions consistent, and keep the movement of the housing 9 in the front and back directions relatively independent. That is to say, in the present invention, the connecting structure connects the knob and the adjusting component 1 in such a way that when the housing is impacted and moves forward and backward relative to the fuselage and the adjusting component 1, the knob can be maintained by the connecting structure at the same position as the adjusting component 1. The knob provided by the present invention is not driven by the housing in the moving directions of front, back, left and right, but is kept consistent with the fuselage and the adjusting component 1 inside the fuselage by the connecting action of the connecting structure.

[0048] The knob connector in the knob may be configured to include:

[0049] An inner cavity 201, which is arranged at the upper part of the knob connector and is used to accommodate the upper end of the connecting structure;

[0050] The upper positioning cavity 202 is arranged at the bottom outer side of the inner cavity 201 , and the upper positioning cavity 202 is arranged in the outer shell 9 .

[0051] The connecting structure is installed in the upper positioning cavity 202, and can be fixed relative to the upper positioning cavity and the knob body by cooperating with the inner wall of the upper positioning cavity 202, thereby driving the adjustment component 1 fixedly connected to its lower part to rotate synchronously with the knob body. Therefore, through the rotation of the adjustment component 1, the cutter disc or corresponding working tool of the automatic walking equipment is driven to adjust its height relative to the bottom of the fuselage, so as to adjust the working position and ensure the working effect.

[0052] In the first implementation mode, the gear adjustment knob device of the present invention, the middle connection structure can be configured as follows: Figure 1 and Figure 4 The connection structure under this implementation can be configured to include:

[0053] A lower screw 5, the bottom end of which is fixedly connected to the top of the adjusting component 1, and the top end of which is arranged on the outside of the top of the adjusting component 1;

[0054] The connecting block 3, the bottom end of which is fixedly connected to the top end of the lower screw 5, and the top end of which is installed in the upper positioning cavity 202;

[0055] The upper screw 4 has a bottom end fixedly connected to the top end of the connecting block 3 , and a top end installed in the inner cavity 201 of the knob 2 .

[0056] The upper and lower ends of the connecting block 3 are respectively embedded Figure 3 The upper positioning cavity 202 at the bottom of the knob and Figure 2 The lower positioning hole 101 at the top of the middle adjustment component 1. The lower positioning hole 101 surrounds the bottom end of the connection block 3. The adjustment component 1 and the connection block 3 are fixedly connected by the lower screw 5, and the upper part of the connection block 3 is threadedly connected to the upper screw 4. The top of the upper screw 4 passes through the upper positioning cavity 202 and extends into the inner cavity 201 of the knob.

[0057] The elastic connector can be set as a spring structure, and its upper and lower ends respectively abut between the top of the upper screw 4 and the inner bottom of the inner cavity 201 to achieve a downward pressure on the knob, ensuring that the knob is close to the outer shell without affecting the movement of the outer shell.

[0058] Specifically, the upper screw 4 may be provided with a gasket 7 between its top and the end of the spring 6, and the spring 6 is sleeved on the outer periphery of the upper screw 4 and is arranged between the gasket 7 and the inner bottom end of the inner cavity 201 in the knob 2. Thus, the inner cavity 201 can press down the knob body 2 under the action of the spring 6, so that the lower end of the knob body 2 is closely attached to the outer surface of the housing 9. Thus, the connection structure between the knob and the adjustment assembly on the body can maintain the knob in close contact with the outer surface of the housing in the vertical direction by the downward pressure of the spring, and at the same time, ensure that the connection method of the knob itself does not affect the movement of the housing.

[0059] For the convenience of user operation, the knob can be specifically arranged above the housing of the automatic walking device. The inner cavity 201 at the top of the knob body can be provided with an opening above it for convenient installation of screws. The opening can be provided with a detachable top cover 8 for sealing. In the technical solution, the top cover 8 can be connected to the knob body or the inner cavity by a buckle.

[0060] In a more preferred implementation, the connection block 3 can also be set to a polygonal column structure. The connection block 3 of the polygonal column structure is fixed to the upper and lower positioning holes through its edges and corners. Specifically, the inner side wall of the lower positioning hole 101 and the inner side wall of the upper positioning cavity 202 are respectively provided with edges that fit the outer surface of the connection block 3. As a result, no relative displacement in the circumferential direction can occur between the connection block 3, the adjustment component 1, and the knob body 2.

[0061] In other implementations, the intermediate connection structure of the gear adjustment knob device of the present invention can also be configured as follows: Figure 5 and Figure 6 In the manner shown, the connection block 3 in Embodiment 1 is integrated with the adjustment assembly 1 to reduce the number of parts of the entire device, simplify the device structure and facilitate assembly. Specifically, this integrated connection structure includes:

[0062] The connecting seat 11 has a bottom end fixedly connected to the top of the adjusting assembly 1 and a top end fixed in the upper positioning cavity 202;

[0063] A core shaft 12, which is fixedly connected to the top end of the connecting seat 11 and installed in the inner cavity 201 of the knob 2;

[0064] The elastic connecting member abuts between the top of the core shaft 12 and the inner bottom end of the inner cavity 201 .

[0065] The adjustment assembly 1 in this implementation can be set as a split structure, including an adjustment cylinder 1a and an adjustment cover 1b. The adjustment cylinder 1a can be set at the bottom of the adjustment assembly 1, and is used to connect with the fuselage 10 to adjust the height of the cutter disc or the corresponding working tool relative to the bottom of the fuselage; the adjustment cover 1b is detachably set on the top of the adjustment cylinder 1a. The connection structure is integrally formed with the top of the adjustment cover 1b, and can drive the entire adjustment assembly to rotate by rotating the knob to adjust the height of the cutter disc or the corresponding working tool relative to the bottom of the fuselage.

[0066] Specifically, the adjusting cover 1b in this implementation mode can be integrally formed with a connecting seat 11 on the top, and a core shaft 12 is integrally connected to the connecting seat 11. The connecting seat 11 can preferably be set as a multi-prism structure to facilitate fixation with the upper positioning cavity 202 at the bottom of the knob to prevent the connecting structure from sliding inside the upper positioning cavity 202. The top end of the core shaft 12 can also be provided with a slot for fixing a clamp 13. The lower positioning block on the knob 2 is sleeved on the connecting seat 11, and the core shaft 12 is located in the inner cavity 201 inside the knob body 2. A spring 6 is sleeved on the core shaft 12, and the top end of the spring 6 is limited by the clamp 13.

[0067] Among them, the cross-sectional area of ​​the connecting seat 11 of the prismatic structure can be set to be larger than the cross-sectional area of ​​the core shaft 12, so that the inner top surface of the upper positioning cavity 202 can abut the top end surface of the connecting seat 11, and the inner side wall of the upper positioning cavity 202 can fit the outer side surface of the connecting seat 11 through the internal edges and corners, so that there is no relative circumferential rotation between the knob and the connecting structure, thereby ensuring the synchronous rotation between the knob, the connecting structure and the adjustment component.

[0068] In other implementations, the outer side of the connecting seat 11 or the connecting block 3 may also adopt guiding structures such as guiding grooves and limit blocks to achieve synchronization with the upper positioning cavity 202. The guiding structures such as guiding grooves and limit blocks fit the inner wall of the upper positioning cavity 202, limiting the upper positioning cavity 202 from moving up and down along the connecting seat 11 or the connecting block 3, and the connecting seat 11 or the connecting block 3 can only rotate synchronously with the upper positioning cavity 202, but cannot rotate relative to the upper positioning cavity 202.

[0069] In summary, the automatic walking device under any of the above-mentioned implementation modes can ensure that during the operation of the automatic walking device, after the shell 9 collides with an obstacle, the shell 9 is not affected by the knob and can be freely displaced relative to the fuselage 10. Since there is no fixed connection between the shell 9 and the knob 2, but they are only in contact with each other, the movement of the shell 9 will not drive the knob 2 to move, and the knob 2 will not hinder the movement of the shell 9. In order to further ensure the range of motion between the shell 9 and the knob 2, the through hole provided on the shell 9 of the automatic walking device for the lower end of the knob and the connecting structure to pass through, its inner circumference can be set to have an appropriate gap with the knob.

[0070] When moving an automatic walking device, the shell 9 may be lifted. At this time, the shell 9 moves upward relative to the body 10. Since the bottom of the inner cavity 201 of the knob presses the shell 9 downward under the action of the spring 6, during the lifting process of the shell 9, the knob body 2 is always in contact with the shell 9. When the shell 9 moves upward, the knob body 2 will also be driven to move upward.

[0071] The advantages of the present invention are that the knob is arranged above the housing of an automatic walking device such as a lawn mower robot, and the knob and the housing can be relatively moved in an active connection manner without affecting each other through the connection structure and elastic connector inside the knob device. There is no need to arrange a complex structure such as a cover on the housing, and the user can directly adjust the working height through the knob exposed outside the housing.

[0072] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gear adjustment knob device, characterized in that: include: A knob (2), comprising a knob body arranged outside a housing (9) of the autonomous walking device; A connecting structure, the lower end of which is fixedly connected to the adjusting component (1) inside the housing (9) of the automatic walking device, and the upper end of which is connected to the knob (2); The knob (2) can move up and down along the connection structure, and keeps consistent with the movement of the housing (9) in the up and down directions; The knob (2) keeps consistent with the movement of the connection structure in the front-to-back direction, and remains relatively independent of the movement of the housing (9) in the front-to-back direction; An elastic connecting member, wherein the upper end of the elastic connecting member is connected to the upper end of the connecting structure, and the lower end of the elastic connecting member is connected to the knob connecting member; The connection structure comprises: a connection seat (11) arranged in the middle of the connection structure, the bottom end of which is fixedly connected to the top of the adjustment component (1), and the top end of which is installed in the upper positioning cavity (202); A core shaft (12) which is fixedly connected to the top end of the connecting seat (11) and is installed in the inner cavity (201) of the knob (2); The elastic connecting piece abuts between the top of the core shaft (12) and the inner bottom end of the inner cavity (201).

2. The gear adjustment knob device according to claim 1, characterized in that: The knob (2) further comprises: a knob connecting piece, the upper part of which is connected to the knob body, the knob connecting piece being sleeved on the connecting structure and rotating synchronously with the connecting structure.

3. The gear adjustment knob device according to claim 2, characterized in that: The knob connector comprises: an inner cavity (201), which is arranged at the upper part of the knob connector and is used to accommodate the upper end of the connection structure; An upper positioning cavity (202) is arranged on the outside of the bottom of the inner cavity (201); the upper positioning cavity (202) is arranged in the outer shell (9).

4. The gear adjustment knob device according to claim 3, characterized in that: An elastic connecting member is arranged between the upper end of the connecting structure and the bottom surface of the inner cavity (201); the knob body abuts against the outer surface of the outer shell (9) under the pressure of the elastic connecting member.

5. The gear adjustment knob device according to claim 1, characterized in that: A through hole is provided on the housing (9) of the automatic walking device, the lower end portion of the knob (2) is arranged in the through hole, and a gap is provided between the through hole and the knob.

6. The gear adjustment knob device according to claim 3, characterized in that: The upper part of the connection structure is installed in the inner cavity (201), and the inner cavity (201) can move up and down along the upper part of the connection structure.

7. The gear adjustment knob device according to claim 3, characterized in that: The middle part of the connection structure is installed in the upper positioning cavity (202), and the upper positioning cavity (202) can move up and down along the middle part of the connection structure, and the middle part of the connection structure can be driven by the upper positioning cavity (202) to perform rotational movement.

8. The gear adjustment knob device according to claim 1, characterized in that: The connection seat (11) is a prismatic structure, or a guide structure is provided on the outer side surface of the connection seat (11), and the cross-sectional area of ​​the connection seat (11) is larger than the cross-sectional area of ​​the core shaft (12); The inner wall of the upper positioning cavity (202) is in contact with the outer side surface of the connecting seat (11); the upper positioning cavity (202) can move up and down along the connecting seat (11), and the connecting seat (11) can rotate synchronously with the upper positioning cavity (202).

9. The gear adjustment knob device according to claim 8, characterized in that: The guide structure protrudes from the outer side surface of the connection seat (11) and fits against the inner wall of the upper positioning cavity (202), thereby limiting the rotation of the connection seat (11) relative to the upper positioning cavity (202).

10. The gear adjustment knob device according to claim 1, characterized in that: The connection structure comprises: a lower screw (5), the bottom end of which is fixedly connected to the top of the adjustment component (1), and the top end of which is arranged outside the top of the adjustment component (1); A connecting block (3), the bottom end of which is fixedly connected to the top end of the lower screw (5), and the top end of which is installed in the upper positioning cavity (202); An upper screw (4), the bottom end of which is fixedly connected to the top end of the connection block (3), and the top end of which is installed in the inner cavity (201) of the knob (2); The elastic connecting piece abuts between the top of the upper screw (4) and the inner bottom end of the inner cavity (201).

11. The gear adjustment knob device according to claim 10, characterized in that: The top of the adjustment component (1) is also provided with a lower positioning hole (101), and the bottom end of the connection block (3) is installed in the lower positioning hole (101); the connection block (3) is a prism structure, and its cross-sectional area is larger than the cross-sectional area of ​​the upper screw (4); The inner wall of the upper positioning cavity (202) is in contact with the outer side surface of the connecting block (3); the upper positioning cavity (202) can move up and down along the connecting block (3), and the connecting block (3) can rotate synchronously with the upper positioning cavity (202).

12. The gear adjustment knob device according to claim 1, characterized in that: The adjustment component (1) comprises: an adjustment cylinder (1a) arranged at the bottom of the adjustment component (1); An adjustment cover (1b) arranged on the top of the adjustment cylinder (1a); The bottom of the connection structure is fixedly connected to the top of the adjustment cover (1b).

13. An automatic walking device, characterized in that: The automatic walking equipment is provided with a gear adjustment knob device as described in any one of claims 1-12.

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