Power switch and automatic walking device

Abstract

The application provides a power switch and an automatic walking device. The power switch keeps the automatic walking device closed when a key is inserted into a key mounting seat to reach an installation position, and triggers the automatic walking device to be turned on when the key is inserted into the key mounting seat to reach a starting position. Thus, the application changes the key from the original rotation to trigger the automatic walking device to switch the running state, and changes to control the automatic walking device to switch between different states by the insertion depth. The application can avoid the problem that the boundary between the rotation angles of the key is not clear, and the user is easy to misoperate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of garden tools, in particular to a power switch and an automatic walking device. BACKGROUND

[0002] The power switch is needed on the automatic walking device such as intelligent mowing robot, which is used to turn on or turn off the total power supply. The existing power switch usually adopts the form of key, which is inserted into the installation seat with key slot, and the switch in the installation seat is actuated by rotating the key to trigger the power on or off.

[0003] The patent No. US9218924 discloses a switch key structure, which includes LIVE, OFF and STORAGE three rotating positions. When the key is in the OFF position, the key can be inserted or pulled out. When the key is in the STORAGE position, the key can be fixed in the keyhole without falling off, while keeping the power off. When the key is in the LIVE position, it can trigger the automatic walking device to start working state.

[0004] However, in this patent, the switching between different states is set in the same plane, and only the rotation angle of the key is used to distinguish them. In addition, in this patent, the STORAGE position of the key is between the LIVE position and the OFF position, and the rotation direction of the key is the same when it is rotated from the OFF position to the LIVE position and the STORAGE position. Therefore, it can only be distinguished by the user's feeling or by observing the rotation angle of the key. It is difficult for the user to clearly distinguish the boundary between the LIVE position and the STORAGE position. Therefore, the user is easy to rotate the key to the LIVE position which should be rotated to the STORAGE position, or rotate the key to the STORAGE position which should be rotated to the LIVE position. This power switch is easy to be misused by the user to trigger the automatic walking device to start in inappropriate conditions, which has a safety hazard. SUMMARY

[0005] The present application provides a power switch and an automatic walking device to solve the problems in the prior art. The key cantilever and the limiting block in the installation seat are matched to change the key from the original rotation to trigger the automatic walking device to switch the running state to the insertion depth of the key to control the automatic walking device to switch between different states. The present application specifically adopts the following technical solutions.

[0006] First, to achieve the above object, a power switch is provided, which comprises: a key mounting seat; a key which is inserted into the mounting position of the key mounting seat and automatically walks the automatic walking equipment in the closed state when it is rotated to the storage position, and which triggers the electrical switch of the automatic walking equipment when it is moved from the storage position to the starting position; the depth of the key inserted into the key mounting seat when the key is in the mounting position and the storage position is less than the depth of the key inserted into the key mounting seat when the key is in the starting position.

[0007] Optionally, the power switch according to any one of the above, wherein the key cannot be directly taken out along the path of its insertion into the key mounting seat when the key is in the storage position.

[0008] Optionally, the power switch according to any one of the above, wherein the inward straight movement and the rotational movement are sequentially performed in sequence during the movement of the key from the storage position to the starting position.

[0009] Optionally, the power switch according to any one of the above, wherein the movement of the key from the storage position to the starting position comprises simultaneously performing the inward movement and the rotational movement.

[0010] Optionally, the power switch according to any one of the above, wherein the key can be directly taken out or inserted along the path of its insertion into the key mounting seat when the key is in the mounting position.

[0011] Optionally, the power switch according to any one of the above, wherein the key comprises: a key connecting plate; a rotating shaft, one end of which is mounted on the key connecting plate; a first cantilever, which is provided at the other end of the rotating shaft; the first cantilever enters the inside of the key mounting seat and can rotate in the cavity inside the key mounting seat; when the key is in the starting position, the side end of the first cantilever abuts against the electrical switch to trigger the automatic walking equipment to start.

[0012] Optionally, the power switch according to any one of the above, wherein the key further comprises a second cantilever, which is provided between the key connecting plate and the first cantilever, and the second cantilever and the rotating shaft enter the inside of the key mounting seat through the mounting gap and can rotate in the cavity inside the key mounting seat; when the key is in the mounting position, the physical part of the key mounting seat is located between the second cantilever and the key connecting plate.

[0013] Optionally, the power switch according to any one of the above, wherein the second cantilever and the first cantilever are located at different positions in the circumferential direction of the rotating shaft.

[0014] Optionally, the power switch according to any one of the above, wherein a positioning limiting block is further provided in the cavity of the key mounting seat, which is provided between the triggering part of the electrical switch and the key mounting seat.

[0015] Optionally, the power switch as claimed in any one of the preceding claims, wherein when the key is in the starting position, the positioning stopper is located between the first cantilever and the second cantilever, and the rear end of the first cantilever abuts against the front end of the positioning stopper.

[0016] Optionally, the power switch as claimed in any one of the preceding claims, wherein the key comprises a key connecting plate, a rotating shaft having one end mounted on the key connecting plate, and a first cantilever provided at the other end of the rotating shaft, and a stopper is provided at the front end of the first cantilever, and the first cantilever enters the inside of the key mounting seat and can rotate in the cavity inside the key mounting seat, and when the key is in the starting position, the front end of the first cantilever abuts against the triggering part of the electrical switch to trigger the automatic walking device to start.

[0017] Optionally, the power switch as claimed in any one of the preceding claims, wherein the cavity of the key mounting seat further comprises a rear stopper provided between the triggering part of the electrical switch and the key mounting seat, and a front stopper provided between the rear stopper and the triggering part of the electrical switch.

[0018] Optionally, the power switch as claimed in any one of the preceding claims, wherein when the key is in the storage position, the stopper is located between the top of the rear stopper and the top of the front stopper, and when the key is in the starting position, the stopper is located between the top of the front stopper and the triggering part of the electrical switch.

[0019] Optionally, the power switch as claimed in any one of the preceding claims, wherein the top end of the front stopper is provided with a transition surface which is inclined from back to front, and the transition surface is used to guide the stopper from the rear end of the front stopper to the front end of the front stopper.

[0020] Optionally, the power switch as claimed in any one of the preceding claims, wherein an elastic member is further provided between the front end of the rotating shaft and the mounting plate, and when the key is in the starting position, the elastic member has potential energy to push the rotating shaft to move backward.

[0021] Optionally, the power switch as claimed in any one of the preceding claims, wherein a boss is further provided on the outer side of the key mounting seat, and the key connecting plate is provided on the outer side of the key mounting seat, and the key connecting plate is provided with a first recess and a second recess, and when the key is in the storage position, the boss abuts against the first recess, and when the key is in the starting position, the boss abuts against the second recess.

[0022] Meanwhile, in order to achieve the above-mentioned purpose, the application further provides an automatic walking device comprising the power switch as claimed in any one of the preceding claims.

[0023] Advantages

[0024] The application keeps the automatic walking device closed when the key is inserted into the key mounting seat to reach the installation position, and triggers the automatic walking device to open when the key is inserted into the key mounting seat to reach the starting position. Thus, the application changes the key from the original rotation to trigger the automatic walking device to switch the running state, and changes to control the automatic walking device to switch between different states by the insertion depth. The application can avoid the unclear boundary between the key rotation angles, which causes the problem of easy misoperation by the user.

[0025] Further, the application can fix the key by increasing the second cantilever, abutting the key with the elastic member, and pushing the top end of the second cantilever to abut the inner wall of the bottom of the key mounting seat. Alternatively, the application can also fix the cantilever by increasing the rear limiting block, abutting the top end of the cantilever stop block at the bottom of the limiting block, so as to ensure that the key will not fall off. The elastic member can also push it back to the position of keeping the automatic walking device closed after the key is reversed and rotated away from the limiting component, which can simplify the operation and improve the user experience.

[0026] To avoid the electrical switch being triggered by mistake by the key, the application can also set a positioning limiting block between the installation position and the starting position, abut the first cantilever at the installation position with the limiting block, and prevent the cantilever from touching the electrical switch to avoid misoperation. Alternatively, the application can also set the trigger position of the electrical switch at the bottom of the installation plate, so that the key can only touch the electrical switch when it is completely inserted into the key mounting seat to reach the starting position. This way can ensure that the electrical switch is not easily triggered by mistake, and can also help the user to intuitively judge the switch state of the machine by judging whether there is a clear gap between the key body and the key mounting seat according to the insertion depth of the key, so as to avoid misoperation.

[0027] Other features and advantages of the application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, and together with the embodiments of the application, serve to explain the application, and do not constitute a limitation on the application. In the drawings:

[0029] Figure 1 is a schematic diagram of the appearance of the power switch after the key is installed;

[0030] Figure 2 is a schematic diagram of the structure of the key in the power switch of the application;

[0031] Figure 3 is a schematic diagram of the structure of the key mounting seat in the power switch of the application;

[0032] Figure 4 is a state diagram of the key in the OFF position in the first embodiment of the present application Figure 1 ;

[0033] Figure 5 is a state diagram of the key in the OFF position in the first embodiment of the present application Figure 2 ;

[0034] Figure 6 is a state diagram of the key in the ON position in the first embodiment of the present application

[0035] Figure 7 is a state diagram of the key in the OFF position in the second embodiment of the present application

[0036] Figure 8 is a state diagram of the first step of the key in the second embodiment of the present application

[0037] Figure 9 is a state diagram of the key in the ON position in the second embodiment of the present application

[0038] In the figure, 1 is a key mounting seat, 111 is a mounting plate, 2 is a key, 3 is a rotating shaft, 4 is a first cantilever, 5 is a second cantilever, 6 is a first groove, 7 is a second groove, 8 is a mounting gap, 9 is an elastic body, 10 is a boss, 11 is an electrical switch, 12 is a positioning stopper, 13 is an elastic member, 14 is a rear stopper, 15 is a front stopper, 16 is a stop block, and 17 is a casing. DETAILED DESCRIPTION

[0039] In order to make the objectives and technical solutions of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0040] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the field of the present application. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with meanings in the context of the prior art, and should not be interpreted to have idealized or overly formal meanings unless otherwise defined.

[0041] The meaning of "and / or" in the present application refers to the case where each exists independently or both exist simultaneously.

[0042] The meaning of "in, out" in the present application refers to the direction of the key holder shell pointing to the inside of the electrical switch, which is in, and vice versa, which is out, relative to the power switch or the automatic walking device itself, and not a specific limitation of the device mechanism of the present application.

[0043] The meaning of "top, bottom" in the present application refers to the end of the key holder pointing to the inside of the electrical switch, or the end of the key cantilever pointing to the shaft, which is the bottom end, and vice versa, which is the top end, when the user is facing the automatic walking device, and not a specific limitation of the device mechanism of the present application.

[0044] The meaning of "front, back" in the present application refers to the direction of the key connecting plate pointing to the shaft distal end close to the electrical switch in the key or the key holder, which is front, and vice versa, which is back, and the side end of the cantilever in the key is the end of the cantilever perpendicular to the front and back directions, and not a specific limitation of the device mechanism of the present application.

[0045] The meaning of "connection" in the present application can be direct connection between components or indirect connection between components through other components.

[0046] In view of the problem of the existing power switch of the automatic walking device, the opening position and the storage position have the same rotation direction, resulting in unclear boundaries between different positions, the present application designs the key structure, cooperates with the limiting structure in the key holder, sets the opening position and the storage position at two depth positions respectively, so that the trigger state corresponding to the key can be clearly judged through the gap between the key body and the key holder, and the user's misoperation is avoided.

[0047] Figure 1 A power switch of an automatic walking device such as a lawn mower according to the present application is generally provided on a machine shell 17 and is triggered by a key to switch the automatic walking device between a working state and an off state.

[0048] The power switch comprises:

[0049] A key holder 1 which can be provided on the machine shell 17;

[0050] A key 2 which is inserted into the installation position of the key holder 1 and rotated to the storage position to keep the automatic walking device in the off state, and is moved from the storage position to the starting position to trigger the electrical switch 11 of the automatic walking device; wherein the depth of the key inserted into the key holder when the key is in the installation position and the storage position is less than the depth of the key inserted into the key holder when the key is in the starting position.

[0051] The aforementioned key has three movement positions within the key mounting base:

[0052] The first position is the installation position, which refers to the position where the key is inserted and removed from the mounting base. When the key is in this installation position, it can be directly removed or inserted along the path it was inserted into the key mounting base 1.

[0053] The second position is the OFF position or storage position. When the key is in this position, it cannot be directly removed along the path it took to insert into the key holder 1. After the key is inserted into the key holder, it needs to be rotated a certain angle from the installation position to reach the OFF position. In this position, the key cannot be removed, and the switch is not activated.

[0054] The third position is the ON position or start position. The key is pushed in from the OFF position and rotated at a certain angle to be fixed in the ON position. In this position, the key can trigger the automatic walking device to start.

[0055] Example 1

[0056] In this embodiment, refer to Figure 4 As shown, after the key is inserted into the key mounting base, the key 2 moves from the storage position to the start position, and then moves inward in a straight line and rotates in sequence.

[0057] Reference Figures 1-6 As shown, in this implementation method, the power switch can be located on the outside of the casing of the automatic walking device.

[0058] Figures 1-3 Among them, the automatic equipment represented by the robotic lawnmower includes: a housing 17, a key mounting seat 1 set on the housing 17, and a key 2 inserted into the key mounting seat 1.

[0059] The key 2 includes a pivot 3 vertically mounted on the front side of the key connecting plate at the bottom of the key body, a first cantilever 4 and a second cantilever 5 mounted on the pivot 3, wherein the first cantilever 4 and the second cantilever 5 are spaced apart by a certain distance and form a certain angle. The first cantilever 4 is located at the front end of the pivot 3. The second cantilever 5 is located between the key connecting plate and the first cantilever 4. The first cantilever 4 and the second cantilever can respectively enter the interior of the key mounting base 1 through the mounting notch 8 provided on the key mounting base, and can rotate in the cavity inside the key mounting base 1. When the key 2 is in the start position, the side end of the first cantilever 4 abuts against the electrical switch 11, triggering the automatic walking device to start.

[0060] Corresponding to the setting angle of the key cantilever structure, a first groove 6 and a second groove 7 are arranged on the key body to cooperate with the key mounting seat to prompt the rotation angle position of the key during the rotation of the key by the user.

[0061] Specifically, the key mounting seat 1 is provided with a center hole and a mounting notch 8. The bottom side of the key mounting seat 1 is provided with a mounting plate 111, and the key mounting seat 1 is fixed with an elastic body 9 for generating different hand feelings when the key is in different positions. A boss 10 is arranged on the outer side of the key mounting seat 1, which is arranged at the end of the elastic body 9 or directly arranged on the plane of the key mounting seat 1, used for abutting against the first groove 6 or the second groove 7 on the key body to prompt the rotation angle of the key during the rotation of the key by the user. The key mounting seat 1 can be integrally formed with the shell 17 or separately arranged.

[0062] The key 2 corresponds to the above three positions and can pass through the mounting position, the OFF position and the ON position in sequence from left to right during rotation. In the mounting position, the shaft 3 and the first cantilever 4 on the key 2 are inserted into or pulled out of the key mounting seat 1 through cooperation between the center hole and the mounting notch on the key mounting seat 1. During rotation of the key from the mounting position to the OFF position, the second cantilever 5 on the key is inserted into the key mounting seat after the first cantilever 4 is inserted, and is rotated to the position cooperating with the mounting notch through the center hole and the mounting notch 8 on the key mounting seat 1, so as to be inserted into the key mounting seat and installed in place. At this time, the key (2) is located in the mounting position. In this mounting position, the top end of the second cantilever 5 can cooperate with the inner side of the key mounting seat 1, abut against the bottom surface of the inner side of the solid part of the key mounting seat (1), limit the partition structure of the solid part of the key mounting seat (1) between the second cantilever (5) and the key connecting plate, and block the path of the second cantilever 5 driven by the elastic member inside the key mounting seat to withdraw from the key mounting seat and disengage from the mounting position.

[0063] Rotating the key clockwise from the mounting position to the right can reach the storage position or the OFF position. At this time, the solid partition structure of the key mounting seat (1) is still located between the second cantilever (5) and the key connecting plate to limit the key from falling off.

[0064] As Figures 4-5As shown, the automatic walking device also includes an electrical switch 11, which is fixedly installed inside the housing 17 or on a mounting plate 111 on the bottom side of the key mounting base 1. A positioning limit block 12 may be further provided on one side of the electrical switch. When the key 2 is in the OFF position, the positioning limit block 12 is located on the rotation path of the first cantilever 4 to prevent the key 2 from rotating toward the electrical switch. The positioning limit block 12 may be fixedly installed on the key mounting base 1.

[0065] The mounting plate 111 may also be provided with an elastic element 13. One end of the elastic element 13 is provided on the mounting plate 111, and the other end is abutted or fixed to the bottom end of the pivot shaft 3 of the key 2. The key mounting seat 1 is located between the second cantilever 5 and the key body 21, and the second cantilever 5 abuts against the inner wall of the key mounting seat 1. At this time, there is a gap between the key body 21 and the key mounting seat 1.

[0066] like Figure 6 As shown, during the process of rotating key 2 from the OFF position to the ON position, the user first pushes key 2 inward through the key body. Key 2 overcomes the elastic force of elastic element 13 and moves further inward towards the key mounting base, making the key body and key mounting base 1 completely fit together. At this time, the protrusion 10 on the key mounting base 1 can be engaged in the first groove 6 on key 2 at the appropriate position, indicating the key position. At this time, the user further rotates key 2, causing the first cantilever to rotate in the start position and trigger the electrical switch 11. At this time, the positioning limit block 12 is located between the trigger part of the electrical switch 11 and the key mounting base 1, and between the first cantilever 4 and the second cantilever 5. In this start position, the rear end of the first cantilever 4 can abut against the front end of the positioning limit block 12. Due to the action of the positioning limit block 12, key 2 can be kept in the ON position. The protrusion 10 is then engaged in the second groove 7 on key 2, indicating to the user that the key has been rotated to the appropriate angle position. During this process, the cooperation of the protrusion 10 with the first and second grooves can improve the feel and also play a certain limiting role for the key.

[0067] When it is necessary to turn off the electrical switch, that is, to turn the key from the ON position to the OFF position, the user only needs to rotate the key 2 in the opposite direction to disengage the first cantilever 4 from the positioning limit block 12. Then, the key 2 can be automatically pushed outward to the OFF position by the restoring force of the elastic element 13.

[0068] Example 2

[0069] In this embodiment, the key also has three movement positions:

[0070] The first position is the installation position, which refers to the position where the key is inserted and removed from the mounting base. When the key is in this installation position, it can be directly removed or inserted along the path it was inserted into the key mounting base 1.

[0071] The second position is an OFF position or a storage position, in which the key cannot be directly removed along the path of insertion into the key mounting seat 1. After the key is inserted into the key mounting seat, it needs to be rotated by a certain angle from the mounting position to reach the OFF position. In this position, the key cannot be pulled out, and the switch cannot be turned on;

[0072] The third position is an ON position or an activation position, in which the key is pushed from the OFF position and rotated by a certain angle to be fixed in the ON position. In this position, the key can trigger the automatic walking device to start.

[0073] In this embodiment, the process of rotating the key 2 from the mounting position to the OFF position is exactly the same as in the first embodiment. The difference between this embodiment and the first embodiment is that in this embodiment, the process of moving the key 2 from the storage position to the activation position includes simultaneous inward movement and rotational movement. The key 2 can not be provided with the first groove 6 and the second groove 7, and the key mounting seat can also not be provided with the protrusion 10. Instead, the key is directly pushed inward by the operator, and the key is guided by the internal structure of the key mounting seat to passively rotate while moving inward at different depths, triggering the automatic walking device to switch to the corresponding state.

[0074] Specifically, as shown in Figure 7 , the key is in the OFF position at this time, and the rear limiting block 14 and the front limiting block 15 are provided inside the key mounting seat 1 or on the housing. One end of the elastic member 13 is provided on the mounting plate 111, and the other end can abut against the front end position of the rotating shaft 3 of the key 2. At this time, a gap is left between the key body and the top end face of the key mounting seat 1.

[0075] When the key 2 is switched from the OFF position to the ON position, the following two steps need to be taken:

[0076] As shown in Figure 8 , the first step is to rotate the key 2 so that the first cantilever 4 of the key 2 abuts against the rear limiting block 14. Since one end of the first cantilever 4 is provided with a stop block 16, the stop block 16 can be clamped into the bottom side of the rear limiting block 14, fixing the first cantilever between the rear limiting block 14 and the front limiting block 15, and keeping the key in the storage position to prevent it from falling off the key mounting seat.

[0077] In addition, the rotation step can also be omitted in other implementations, and the key can be directly set in the OFF position as shown in Figure 8 by inward pushing through the abutment of the limiting blocks. That is, the key is directly fixed in the storage position by inward pushing, and the key is prevented from falling off by the abutment of the rear limiting block against the stop block 16.

[0078] As shown in Figure 9As shown, the second step is to further push the key 2 inward, the key 2 overcomes the elastic force of the elastic member and triggers the electrical switch 11. At this time, the block 16 connected to one end of the first cantilever 4 can slide off the transition surface provided on the top of the front limiting block 15 during the inward pushing of the key 2, and is clamped between the side of the front limiting block 15 and the electrical switch, so that the key 2 is kept in the ON position, and the block 16 is kept between the top of the front limiting block 15 and the triggering part of the electrical switch 11. At this time, the key body is in close contact with the key mounting seat 1, and the electrical switch is triggered to start the automatic walking device.

[0079] When it is necessary to close the electrical switch, the user only needs to reverse rotate the key 2, so that the block 16 is disengaged from the limiting action of the front limiting block 15, and then the key can be moved backward under the elastic potential energy of the elastic member 13 to provide a restoring force for the key, so that the key can be pushed outward to the OFF position.

[0080] The transition surface provided on the top of the front limiting block 15 has a rear-to-front inclination angle, the length of the side close to the rear limiting block is shorter, and the length of the side close to the elastic member and the electrical switch is larger. The length difference can guide the block 16 from the rear end of the front limiting block 15 to the front end of the front limiting block 15, and the block 16 is kept in the starting position by abutting against the front end surface of the front limiting block 15, and the key is kept in the starting position by abutting against the front end surface of the front limiting block 15, and the key is kept in the starting position by abutting against the front end surface of the front limiting block 15.

[0081] Therefore, the internal structure design of the power switch can:

[0082] 1. When the key is in the OFF position, the switch is triggered by rotating the key after pushing it inward, avoiding the possibility of misoperation caused by directly rotating the key in the OFF position to trigger the automatic walking device, and improving the safety of the machine.

[0083] 2. When it is necessary to close the switch, the user only needs to reverse rotate the key, and then directly utilize the restoring force of the elastic member to automatically drive the key to the storage angle position or the installation position, simplifying the operation and improving the user experience.

[0084] 3. In the second embodiment of the present application, the key can be directly pushed inward to trigger the switch, eliminating the rotating action and simplifying the operation. After triggering the switch, the block on the first cantilever can abut against the bottom of the front limiting block to fix the key in the ON position.

[0085] 4、The key body and the key mounting seat are kept apart by a certain gap when the key is in the OFF position, and the key body and the key mounting seat are in close contact when the key is in the ON position. In this way, the user can clearly determine whether the power switch is in the open or closed position through the installation gap of the key, avoiding misoperation. This way, the structure of the boss and the groove cooperation for judging the hand feeling of the key in different positions can be omitted, further simplifying the structure of the power switch and reducing the production and assembly cost.

[0086] The above is only an embodiment of the present application, which is described in detail, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A power switch, characterized in that, include: Key mounting bracket (1); When the key (2) is inserted into the mounting position of the key mounting base (1) and rotated to the storage position, the automatic walking device remains closed. When it moves from the storage position to the start position, it will trigger the electrical switch (11) of the automatic walking device. When the key is in the installation and storage positions, the depth to which it is inserted into the key holder is less than when the key is in the start position. The key (2) includes: Key connector plate; A rotating shaft (3) is mounted at one end on a key connector plate; The first cantilever (4) is located at the other end of the pivot (3), and a stop (16) is provided at the bottom of the front end of the first cantilever (4). The first cantilever (4) enters the interior of the key mounting base (1) and is able to rotate in the cavity inside the key mounting base (1); When the key (2) is in the start position, the front end of the first cantilever (4) abuts against the electrical switch (11), triggering the automatic walking device to start; The key mounting cavity is also provided with a front limiting block and a rear limiting block; The rear limiting block (14) is disposed between the triggering part of the electrical switch (11) and the key mounting seat (1); The front limiting block (15) is disposed between the rear limiting block (14) and the triggering part of the electrical switch (11).

2. The power switch as described in claim 1, characterized in that, When the key (2) is in the storage position, the key (2) cannot be taken out directly along the path of its insertion into the key mounting base (1).

3. The power switch as described in claim 1, characterized in that, The process of moving the key (2) from the storage location to the starting location includes both inward movement and rotational movement.

4. The power switch as described in claim 1, characterized in that, When the key (2) is in the installation position, the key (2) can be directly removed or inserted along the path it is inserted into the key mounting base (1).

5. The power switch as described in claim 1, characterized in that, When the key (2) is in the storage position, the stop (16) is located between the top of the rear limit block (14) and the top of the front limit block (15); When the key (2) is in the start position, the stop (16) is located between the top of the front limit block (15) and the trigger part of the electrical switch (11).

6. The power switch as described in claim 5, characterized in that, The top of the front limiting block (15) is provided with a transition surface, which is inclined from back to front to guide the stop block (16) from the rear end of the front limiting block (15) to the front end of the front limiting block (15).

7. The power switch as described in claim 1, characterized in that, An elastic element (13) is provided between the front end of the rotating shaft (3) and the mounting plate (111); when the key (2) is in the start position, the elastic element (13) has the potential energy to push the rotating shaft (3) to move backward.

8. The power switch as described in claim 7, characterized in that, The key mounting base (1) is also provided with a boss (10) on its outer side. The key connecting plate is disposed on the outside of the key mounting base (1), and the key connecting plate is provided with a groove; When the key (2) is in the start position, the boss (10) abuts against the groove.

9. An automatic walking device, characterized in that, It includes a power switch as described in any one of claims 1-8.

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