Combined key and automatic walking device having the same

Abstract

The present application provides a combination key and an automatic walking device with the combination key. The combination key is provided with a limiting locking device, especially a lock element driven by an unlocking key. The lock element is driven by the unlocking key or the working key, and is arranged close to a limiting boss or a limiting slot on the back of the working key or the unlocking key in the initial state, so as to prevent the working key from being pressed or the working key from being pushed forward to misoperate the device. In the process of gradually sliding away from the initial state, the lock element is gradually separated from the limiting boss by the unlocking key or the working key, and the limiting of the working key is released. The working key can be pressed to drive the automatic walking device to move. In this way, the user must keep applying external force to the unlocking key to unlock the automatic walking device, so as to avoid the danger caused by misoperation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of garden tools, and particularly relates to a combined key and an automatic walking device with the same. BACKGROUND

[0002] The intelligent automatic walking device and other automatic walking devices have been widely popularized, and many families also use them. The common automatic walking device usually includes a HOME key, a START key and a stop key on an operation panel. After the HOME key is pressed, the automatic walking device returns to a base station, after the START key is pressed, the automatic walking device starts to perform a mowing work, and after the stop key is pressed, the automatic walking device stops working. Usually, the automatic walking device is set to directly press the corresponding key to drive the device to make the corresponding action. However, since this key mode only needs one-step operation to drive the automatic walking device to act, there is a risk of misoperation. When misoperation occurs, the automatic walking device is easy to cause danger to people around.

[0003] The prior art adds a locking design to the above-mentioned key. The prior art is generally designed as follows: an unlocking key is arranged on the operation panel, and the unlocking key can be unlocked by being pressed once, and the unlocking key can unlock the HOME key and the START key and other working keys after being pressed once. In this way, the user can normally operate the HOME key and the START key and other working keys after pressing the unlocking key once. However, such a setting still has a security risk, and when misoperation occurs, the unlocking key can be randomly operated as long as it is touched. Such a protection design still has a risk of misoperation. SUMMARY

[0004] The present application provides a combined key and an automatic walking device with the same, which locks the working key when the unlocking key in the combined key is in an initial state (locked state), to prevent misoperation of the working key; and when the unlocking key is switched to an unlocked state, external force needs to be always applied to the unlocking key to press the working key and thus drive the automatic walking device to act, so that the danger caused by misoperation is more effectively avoided.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present application provides a combined key, which includes an unlocking key and a working key, and further includes a limiting locking device, the limiting locking device includes: a lock key element arranged to rotate synchronously with the unlocking key; a limiting boss arranged to linearly slide synchronously with the working key; when the unlocking key is in an initial state, the lock key element and the limiting boss are arranged close to each other; and when the unlocking key rotates and gradually deviates from the initial state, the lock key element gradually deviates from the linear sliding path range of the limiting boss.

[0006] Optionally, the combined key as described above, wherein the rear side of the lock key element abuts against the front side of the limiting boss when the unlocking key is in the initial state.

[0007] In a second aspect, the present application provides another combined key, which comprises an unlocking key and a working key, and further comprises a limiting locking device, the limiting locking device comprises: a lock key element, which is arranged to keep synchronous linear sliding with the working key; a limiting boss, which is arranged to keep synchronous rotation with the unlocking key; the lock key element and the limiting boss are arranged close to each other when the unlocking key is in the initial state; the limiting boss gradually moves away from the linear sliding path range of the lock key element during the process that the unlocking key gradually moves away from the initial state.

[0008] Optionally, the combined key as described above, wherein the rear side of the lock key element abuts against the front side of the limiting boss when the unlocking key is in the initial state.

[0009] Optionally, the combined key as described above, further comprises an unlocking notch, which is arranged above the limiting boss, and the lock key element gradually enters the unlocking notch during the process that the unlocking key rotates after the lock key element moves away from the limiting boss.

[0010] In a third aspect, the present application provides still another combined key, which comprises an unlocking key and a working key, and further comprises a limiting locking device, the limiting locking device comprises: a lock key element, which is arranged to keep synchronous up-down linear sliding with the unlocking key; a limiting boss, which is arranged to keep synchronous linear sliding with the working key; the lock key element and the limiting boss are arranged close to each other when the unlocking key is in the initial state; the lock key element gradually moves away from the linear sliding path range of the limiting boss during the process that the unlocking key linearly slides downward and gradually moves away from the initial state.

[0011] Optionally, the combined key as described above, wherein the rear side of the lock key element abuts against the front side of the limiting boss when the unlocking key is in the initial state.

[0012] Optionally, the combined key as described above, further comprises a sliding rod, and the back or side of the unlocking key is further provided with a sliding groove, and the sliding rod is installed in the sliding groove.

[0013] In a fourth aspect, the present application provides still another combined key, which comprises an unlocking key and a working key, and further comprises a limiting locking device, the limiting locking device comprises: a lock key element, which is arranged to keep synchronous linear sliding with the working key; a limiting groove, which is arranged to keep synchronous up-down linear sliding with the unlocking key; the lock key element is located in the limiting groove when the unlocking key is in the initial state; the lock key element gradually moves away from the limiting groove during the process that the unlocking key linearly slides downward and gradually moves away from the initial state.

[0014] Optionally, the combined key further comprises a sliding rod, and the back or side of the unlocking key is provided with a sliding groove, and the sliding rod is installed in the sliding groove.

[0015] Optionally, the combined key further comprises an unlocking gap arranged above the limiting groove, and after the locking key element is separated from the limiting groove, the locking key element gradually enters the unlocking gap with the linear sliding of the working key.

[0016] The application also provides an automatic walking device with the combined key.

[0017] The application has the advantages that the combined key is provided with a limiting and locking device, and in particular, the locking key element is arranged close to the limiting boss or limiting groove on the back of the working key or unlocking key in the initial state, so that the working key is prevented from being pressed or pushed forward to cause misoperation of the device. During the process of the unlocking key or working key sliding and gradually separating from the initial state, the locking key element is gradually separated from the limiting boss by the unlocking key or working key, so that the working key is released from the limitation. Alternatively, during the process of the unlocking key being pressed and gradually separating from the initial state, the locking key element is gradually separated from the limiting boss or limiting groove by the unlocking key or working key, so that the working key is released from the limitation. At this time, the working key can be pressed to drive the automatic walking device to work. In this way, the user must keep applying external force to the unlocking key to unlock the automatic walking device, so that the danger caused by misoperation is avoided.

[0018] Further, the application also provides a lifting part arranged at the front end of the stop key and capable of lifting the working key, and the working key and the stop key are linked by the lifting part. When the stop key is pressed, the working key is lifted by the lifting part, the working key is reset, and the automatic walking device stops working. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the combined key of the application;

[0020] Figure 2 is a structural schematic view of the combined key of the application;

[0021] Figure 3 is a structural schematic view of the combined key of the application;

[0022] Figure 4 is a structural schematic view of the combined key of the application;

[0023] Figure 5 is a structural schematic view of the combined key of the application;

[0024] Figure 6 is the schematic diagram of the position relation between the working key and the unlocking key in the initial state of the first combined key of the present application;

[0025] Figure 7 is the schematic diagram of the position relation between the working key and the unlocking key in the unlocking state of the first combined key of the present application;

[0026] Figure 8 is the schematic diagram of the mounting mode of the working key of the second combined key of the present application;

[0027] Figure 9 is the schematic diagram of the bottom of the mounting mode of the working key of the second combined key of the present application;

[0028] Figure 10 is the schematic diagram of the structure of the unlocking key of the second combined key of the present application;

[0029] Figure 11 is the schematic diagram of the bottom of the working key of the second combined key of the present application;

[0030] Figure 12 is the schematic diagram of the position relation between the working key and the unlocking key in the initial state of the second combined key of the present application;

[0031] Figure 13 is the schematic diagram of the position relation between the working key and the unlocking key in the unlocking state of the second combined key of the present application;

[0032] Figure 14 is the schematic diagram of the automatic walking device with the combined key;

[0033] Figure 15 is the mounting shell structure of the working key of the third combined key of the present application;

[0034] Figure 16 is the schematic diagram of the bottom of the mounting mode of the working key of the third combined key of the present application;

[0035] Figure 17 is the schematic diagram of the structure of the unlocking key of the third combined key of the present application;

[0036] Figure 18 is the schematic diagram of the bottom of the working key of the third combined key of the present application;

[0037] Figure 19 is the schematic diagram of the position relation between the working key and the unlocking key in the initial state of the third combined key of the present application;

[0038] Figure 20 is the schematic diagram of the position relation between the working key and the unlocking key in the unlocking state of the third combined key of the present application;

[0039] Figure 21 is a schematic view of the bottom of the working key in the fourth combined key of the present application;

[0040] Figure 22 is a schematic view of the structure of the unlocking key in the fourth combined key of the present application;

[0041] Figure 23 is a schematic view of the positional relationship between the working key and the unlocking key in the fourth combined key of the present application in the initial state;

[0042] Figure 24 is a schematic view of the positional relationship between the working key and the unlocking key in the fourth combined key of the present application in the unlocking state. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are only 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 any creative effort belong to the scope of protection of the present application.

[0044] 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 of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless otherwise defined.

[0045] In the present application, the meaning of "front" and "back" refers to the direction of sliding unlocking of the unlocking key relative to the combined key itself, and the opposite direction is the back, and not a specific limitation on the device mechanism of the present application.

[0046] In the present application, the meaning of "left" and "right" refers to the left side of the sliding unlocking direction of the combined key relative to the combined key itself, and the opposite direction is the right, and not a specific limitation on the device mechanism of the present application.

[0047] In the present application, the meaning of "up" and "down" refers to the side of the combined key for user operation relative to the combined key itself, and the opposite direction is the down, and not a specific limitation on the device mechanism of the present application.

[0048] In the present application, the meaning of "connection" can be direct connection between components or indirect connection between components through other components.

[0049] The initial state, or locked state, described in this invention refers to the state in which the working key is restricted and cannot be pressed to trigger the corresponding operation of the automatic walking device. The unlocked state, described in this invention, refers to the state in which the working key is released from restriction and can be pressed to trigger the corresponding operation of the automatic walking device.

[0050] refer to Figure 1 As shown, the combination button 1 provided by this invention includes an unlock button 3, a working button 2, and a limiting locking device. Specifically, the working button may include a Start button 4 and a Home button located on the left and right sides of the unlock button 3, respectively. (Reference) Figure 2 As shown, the working key 2 is snapped into the mounting bracket 41 in the combination key 1. The front-to-back length of the working key 2 is slightly smaller than the length of the slot in the mounting bracket 41 so that the working key 2 can be pushed horizontally back and forth. The mounting bracket 41 is also provided with an elastic element bracket 42 on its front or rear face for mounting an elastic element for controlling the reset of the working key 2. One end of the elastic element abuts against the elastic element bracket 42, and the other end abuts against the surface of the abutment plate at the bottom of the working key 2 or against the back side of the unlock key. When the user does not apply any pushing force to the working key, the working key 2 is restored to its initial state.

[0051] refer to Figures 3 to 7 The limiting and locking device includes: a locking key element 8, which is configured to rotate synchronously with the unlocking key 3; and a limiting boss 11, which is configured to slide linearly synchronously with the working key 2. When the unlocking key 3 is in the initial state, the locking key element 8 and the limiting boss 11 are closely positioned together. During the process of the unlocking key 3 sliding linearly and gradually moving away from the initial state, the rod-shaped or plate-shaped structure of the locking key element 8 gradually moves away from the linear sliding path range of the limiting boss 11.

[0052] refer to Figure 3 As shown, a limiting boss 11 is provided on the inner bottom of the working key, for reference. Figure 4 As shown, the unlock key has locking elements 8 protruding from its side end faces at both ends near the working key. When the working key is in its initial state, as... Figure 6 As shown, the locking element 8 and the limiting boss 11 are disposed close to each other. The locking element 8 is located near the starting position of the forward stroke of the working key, so that when the working key is accidentally operated, its rear side abuts against the front end face of the limiting boss 11 of the working key, preventing it from continuing to move forward. Due to the abutment of the locking element 8 against the limiting boss 11, the working key cannot be pushed in the initial state, thereby avoiding its accidental operation. As the unlocking key 8 gradually disengages from the initial state as the unlocking key 3 rotates downward around the first rotating shaft 7, as... Figure 7As shown, the lock key element 8 is gradually separated from the limiting boss 11 and rotates downward, and the restriction of the lock key element to the movement stroke of the working key is removed. Thus, when the user keeps the unlocking key pressed to make the lock key element separate from the initial state, the working key can be pushed forward and is not restricted by the lock key element. In the process as above, when the unlocking key is in the initial state, the unlocking key is in the same plane as the working key, the rotating direction of the unlocking key is perpendicular to the rotating shaft connected to the working key, and the unlocking key rotates downward to be unlocked and is driven by the torsional spring arranged on the first rotating shaft 7 to pop up to enter the locked state. The working key includes two or more working keys, which are arranged on both sides of the unlocking key in the axial direction of the first rotating shaft.

[0053] Reference Figure 4 As shown, the locking process of the working key sliding backward or the resetting process of the unlocking key popping up can be achieved by the resetting device. The resetting device includes an elastic body. For the working key 2, one end of the elastic body abuts against the elastic body support 42 at the bottom of the working key 2, and the other end abuts against the abutting plate on the end surface of the working key 2. Figure 5 As shown, the surface of the abutting plate on the end surface of the working key 2. After the external force applied to the working key is removed, the elastic body pushes the working key to restore it to the initial state. One possible implementation of the elastic body is to achieve it by a spring. In the unlocking key 2, the resetting device provides an upward abutting force to make the unlocking key 3 be lifted. The resetting device of the unlocking key can adopt a torsional spring.

[0054] The application also provides another combined key, which has the structure as shown in Figures 8 to 13 As shown, the combined key includes the unlocking key 3 and the working key 2, and further includes a limiting locking device. The limiting locking device includes:

[0055] The lock key element 8 is arranged to keep synchronous linear sliding with the working key 2;

[0056] The limiting boss 11 is arranged to rotate synchronously with the unlocking key 3;

[0057] When the unlocking key 3 is in the initial state, the lock key element 8 and the limiting boss 11 are arranged close to each other; in the process of linear sliding of the unlocking key 3 and gradually separating from the initial state, the limiting boss 11 gradually separates from the linear sliding path range of the lock key element 8.

[0058] Specifically, referring to Figures 8 to 9 As shown, the lock key element 8 protrudes from the inner end surface of the working key 2 to extend to the lower part of the unlocking key 3. Referring to Figure 10 , the lower part of the unlocking key 3 is provided with the limiting boss 11, and the lower end surface of the lock key element 8 abuts against the upper end surface of the limiting boss 11 in the initial state. The upper end surface of the limiting boss 11 and the upper end surface of the unlocking key 3 are formed with a space for accommodating Figure 11The groove of the lock key element 8 is shown. The groove extends forward to form an unlocking notch 12.

[0059] Reference is made to Figure 12 or Figure 13 As shown, the limiting boss in front can also be provided with an unlocking notch 12 for accommodating the lock key element 8. During the process of pressing the unlocking key 3, the lock key element is separated from the limiting boss in front, and then gradually enters the unlocking notch 12 during the process of pushing the working key forward. Thus, the working key can slide in the horizontal direction between the initial state and the unlocking state. In the initial state, the angle of the unlocking key rotating around the first rotating shaft 7 is limited by the lock key element in front of the limiting boss; in the unlocking state, the angle of the unlocking key rotating around the first rotating shaft 7 is limited by the depth of the unlocking notch 12. The torsion spring mounted on the first rotating shaft 7 included in the unlocking key 3 serves as a restoring device, which will lift the unlocking key 3 to restore to the initial state when the external force applied to the unlocking key 3 is removed.

[0060] In another implementation of the present application, the above-mentioned combined key is applied to Figure 14 the automatic walking device shown. The automatic walking device 13 includes a casing, a walking wheel arranged below the casing, and a key box 14 of the combined key arranged on the upper part of the casing.

[0061] The automatic walking device includes a casing 13, and a key box 14 arranged on the upper part of the casing. The key box 14 includes a first rotating shaft 7, on which the working key 4 and the 2 are arranged. A second rotating shaft 6 is arranged in parallel to the first rotating shaft and in front of the first rotating shaft. Figure 12 、 Figure 13 As shown, the stop key 5 can rotate around the second rotating shaft 6, and the unlocking key 3 arranged on the control box can be pressed up and down in the control box 10. The elastic body arranged on the control box has one end fixed on the control box 10 and the other end capable of applying force to the working key to maintain the unlocking key in the initial state when the unlocking key is not subjected to external force. Figure 4 In the manner shown, the lock key element 8 arranged on the unlocking key 3 can rotate up and down with the unlocking key. The lock key element 8 limits the distance of the horizontal forward pushing of the Home key by cooperating with the upper limiting boss 11 of the Home key.

[0062] In the state that the above-mentioned automatic walking device is horizontally placed, the linear sliding of the lock key element 8 or the working key 2 is in the horizontal or nearly horizontal direction, and is forward or backward relative to the main body structure of the automatic walking device.

[0063] Reference is made to Figure 6 、 Figure 7As shown, the stop button 5 is arranged at the rear side of the unlocking button; the stop button comprises a stop button body and a lifting portion arranged at the front end of the stop button body. The second rotating shaft 6 is arranged between the stop button body and the lifting portion, so that when the stop button is pressed, the lifting portion is lifted upward correspondingly. The lifting portion is arranged at the lower side of the unlocking button, so that the unlocking button is lifted by the lifting portion according to the pressed state. Thus, the automatic walking device stops working. When the stop button is not pressed in the initial state, the lifting portion is located at the terminal position of the movement track of the unlocking button rotating around the shaft, and does not contact the unlocking button. At this time, the unlocking button can be pressed by the operator according to the unlocking of the unlocking button.

[0064] Optionally, the combination button described above, wherein the front side of the unlocking gap 12 of the unlocking button is further provided with a reset protrusion; the lifting portion of the stop button is arranged at the lower side of the reset protrusion and located on the movement track of the reset protrusion rotating. The lifting portion of the stop button and the stop button body can be respectively arranged at the front and rear sides of the first rotating shaft 7, so as to lift the reset protrusion and further lift the unlocking button, thereby avoiding the unlocking button from being triggered by mistake.

[0065] The back surface of the working button is provided with a buckle structure, and the working button is slidably arranged in the mounting groove of the shell through the buckle structure.

[0066] The back surface of the working button is provided with a spring force plate for providing support force for the elastic deformation of the spring.

[0067] The upper surface of the working button is provided with a trigger component (such as a magnet), which triggers the Hall sensor when the working button enters or exits the induction area.

[0068] The lock button element described above can be typically selected as a rod or a sheet. Other structures capable of realizing the locking and unlocking functions described above also belong to the category of the lock button element in the present application. Other structures capable of realizing the locking and unlocking functions described above also fall within the protection scope of the present application.

[0069] In parallel with the above implementation manner, reference is made to Figure 16 As shown, the elastic member support 42 corresponding to the unlocking button 3 is arranged at the bottom of the inner wall of the box body 43 structure below the unlocking button, which supports the elastic member and abuts the elastic member against the rear wall surface of the unlocking button, so as to reset the unlocking button.

[0070] Reference is made to Figures 17 to 20 The limiting locking device comprises:

[0071] The lock button element 8 is arranged to be synchronous with the unlocking button 3 to linearly slide up and down;

[0072] The limiting boss 11 is arranged to be synchronous with the working button 2 to linearly slide;

[0073] When the unlocking key 3 is in the initial state, the lock key element 8 and the limiting boss 11 are close to each other. When the unlocking key 3 is linearly sliding downward and gradually leaving the initial state, the lock key element 8 gradually leaves the linear sliding path of the limiting boss 11, and the linear sliding direction of the limiting boss 11 is horizontal or close to horizontal.

[0074] Referring to Figure 17 As shown, the back or side of the unlocking key 3 is also provided with a sliding groove 40, and a sliding rod fixed on the device shell is installed in the sliding groove 40, and the unlocking key 3 can linearly slide up and down along the sliding rod through the sliding groove 40. When the unlocking key is in the initial state, as shown, Figure 18 As shown, the front side of the limiting boss 11 provided on the back side of the working key 2 abuts against the rear side of the lock key element 8, forming Figure 19 As shown. Referring to Figure 19 , in the initial state, the working key is locked, and at this time, the lock key element 8 and the limiting boss 11 are close to each other, and the lock key element 8 is arranged near the starting position of the forward pushing stroke of the working key, and further abuts against the front end face of the limiting boss 11 of the working key when the working key is misoperated, thereby preventing the working key from continuing to move forward. Due to the abutment of the lock key element 8 against the limiting boss 11, the working key cannot be pushed in the initial state, thereby avoiding being misoperated. As shown, Figure 20 When the unlocking key 8 gradually leaves the initial state by sliding downward along with the unlocking key 3, the upper part of the lock key element 8 gradually leaves the limiting boss 11, and the limitation of the working key movement stroke by the lock key element is cancelled. Thus, when the user keeps the unlocking key and pushes the lock key element to be pressed to leave the initial state, the working key can be pushed forward and is not limited by the lock key element. In the above process, when the unlocking key is in the initial state, the unlocking key and the working key are located in the same plane, the sliding direction of the unlocking key is perpendicular to the rotation shaft of the combined key, and the downward sliding is unlocking, and the upward sliding is locking by the abutment of the elastic member 9. The working key includes two or more, and the working keys are arranged on both sides of the unlocking key along the axial direction of the rotation shaft of the combined key.

[0075] Referring to Figure 17 As shown, the locking process of upward sliding can be realized by a reset device. The reset device includes an elastic member 9, one end of which abuts against the bottom of the unlocking key, and the other end of which abuts against the elastic member support 42 provided on the bottom of the inner wall of the box body 43 structure below the unlocking key. When the external force applied to the unlocking key is removed, the elastic member 9 pushes the unlocking key to restore it to the initial state. A possible implementation of the elastic member is realized by a spring.

[0076] The combination key further comprises a stop key 5 arranged at the rear side of the unlocking key 3, the stop key 5 comprises a stop key 5 body and a lifting part arranged at the front end of the stop key 5 body, the lifting part is arranged at the lower side of the unlocking key 3, the lifting part of the stop key 5 and the stop key 5 body are respectively arranged at the front and rear sides of the second rotating shaft 6, and the stop key 5 rotates around the second rotating shaft 6.

[0077] The application further provides another combination key, as shown in Figures 21 to 24 , which comprises an unlocking key 3 and a working key 2, and further comprises a limiting locking device arranged between the unlocking key 3 and the working key 2.

[0078] A lock key element 8 is arranged to keep synchronous linear sliding with the working key 2;

[0079] A limiting slot 32 is arranged to keep synchronous linear sliding with the unlocking key 3;

[0080] When the unlocking key 3 is in the initial state, the lock key element 8 is located in the limiting slot 32, and when the unlocking key 3 linearly slides downwards and gradually leaves the initial state, the lock key element 8 gradually leaves the limiting slot 32.

[0081] Specifically, referring to Figure 21 , the lock key element 8 protrudes from the inner side end face of the working key 2 and extends to the lower part of the unlocking key 3. The lock key element 8 is arranged at the back or side of the working key 2, and the lock key element 8 is in a rod shape or a sheet shape; the limiting slot 32 is arranged at the back or side of the unlocking key 3.

[0082] Referring to Figure 22 , the back or side of the unlocking key 3 is further provided with a sliding slot 40. The combination key further comprises a sliding rod, and the sliding slot 40 contains the sliding rod. The sliding rod is fixed on the shell of the device and slides up and down with the working key. In the locked state and the unlocked state, the sliding rod is respectively located at the bottom and the top of the sliding slot.

[0083] Referring to Figure 23 , the initial state and Figure 24 , the unlocking state, the upper part of the limiting slot 32 is further connected with a horizontal unlocking notch 12. After the lock key element 8 leaves the limiting slot 32, with the linear sliding of the working key 2, the linear sliding direction of the lock key element 8 is horizontal or close to horizontal, and the lock key element 8 gradually enters the unlocking notch 12. Specifically, in the initial state shown in Figure 23 , the lock key element 8 is limited in the limiting slot 32 by the abutting effect of the elastic part 9 on the unlocking key 3. From Figure 23 to Figure 24In the process of the state shown, the unlocking key 3 is pressed down along the direction of the sliding groove 40, in the process, since the height of the working key 2 is constant, the locking key element 8 is gradually slid from the lower part of the limiting groove 32 to the upper part of the limiting groove 32 relative to the limiting groove 32. Then, the locking key element 8 is slid forward along with the working key 2 being pushed, moving to the front along the direction of the unlocking gap 12, forming Figure 24 the unlocking state to trigger the starting of the corresponding working state. In the unlocking state, the distance of the unlocking key being pressed down is limited by the depth range of the sliding groove 40. The bottom of the unlocking key 3 is provided with a reset device, when the external force applied to the unlocking key 3 is removed, the unlocking key 3 is lifted to restore to Figure 23 the initial state shown.

[0084] In another implementation manner of the present application, the combined key described above is applied to Figure 14 the automatic walking device shown. The automatic walking device 13 comprises a shell, the lower part of the shell is provided with walking wheels, and the upper part of the shell is provided with a key box 14 containing the combined key as described above.

[0085] The automatic walking device comprises a shell 13, and the upper part of the shell 13 is provided with a key box 14. The key box 14 comprises: a first rotating shaft 7, and the working key 2 is arranged on the first rotating shaft 7. A second rotating shaft 6 is arranged in parallel to the first rotating shaft and at the front part of the first rotating shaft. As shown in Figure 23 , Figure 24 the stop key 5 can rotate around the second rotating shaft 6; the unlocking key 3 arranged on the control box is lifted by the lifting part at the front end of the stop key 5. The elastic part 9 arranged on the control box is fixed at one end in the key box 14 and can apply force to the unlocking key 3 to keep the unlocking key 3 in the initial state when the unlocking key is not subjected to external force. The locking key element 8 arranged on the unlocking key 3 can slide along with the unlocking key. The locking key element 8 is limited from being pushed forward by cooperating with the limiting boss 11 on the side wall of the working key 2.

[0086] In the state that the automatic walking device described above is horizontally placed, the linear sliding of the working key 2 is in the horizontal or nearly horizontal direction, and is forward or backward relative to the main body structure of the automatic walking device.

[0087] As shown in Figure 19 , by overcoming the action of the elastic part 9 through external force, the locking key 3 is pushed to slide the locking key element 8 downward, and the locking key element 8 is out of the height range of the limiting boss 11 on the working key 2, at this time, the working key 2 can move forward.

[0088] Referring to Figure 23 , Figure 24As shown, the stop button 5 is arranged at the rear side of the unlock button; the stop button comprises a stop button body and a lifting portion arranged at the front end of the stop button body. The second rotating shaft 6 is arranged between the stop button body and the lifting portion, so that when the stop button is pressed, the lifting portion is lifted upward correspondingly. The lifting portion is arranged at the lower side of the work button or the unlock button, so that the work button or the unlock button is lifted by the lifting portion when the stop button is pressed. Thus, the automatic walking device stops working. When the stop button is not pressed in the initial state, the lifting portion is located at the terminal position of the movement track of the work button or the unlock button, and does not contact the work button or the unlock button, so that the work button or the unlock button is pushed or pressed according to the direct operation of the operator.

[0089] The lock button element described above can be typically selected as a rod or a sheet. Other structures capable of realizing the locking and unlocking functions described above also belong to the scope of the lock button element in the present application. Other structures capable of realizing the locking and unlocking functions described above also fall within the protection scope of the present application.

[0090] In order to facilitate the automatic walking device to sense the state of each button described above, the stop button body or the lifting portion or the work button can be further provided with a magnetic body. The lower side of the control box of the combined button is further provided with a Hall element at the position opposite to the magnetic body. Through the sensing of the Hall element on the magnetic body, it can be known that each button is lifted or pressed, and then the automatic walking device is switched in different working states correspondingly.

[0091] 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 patent scope of the present application. 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 all belong to the protection scope of the present application.

Claims

1. Combination key comprising an unlocking key (3) and a working key (2), characterized in that, Further comprising a limiting locking device, the limiting locking device comprising: a lock key element (8) arranged to keep synchronous linear sliding with the working key (2); and a limiting boss (11) arranged to keep synchronous rotation with the unlocking key (3); the lock key element (8) and the limiting boss (11) are in abutment when the unlocking key (3) is in the initial state; the limiting boss (11) gradually leaves the linear sliding path of the lock key element (8) when the unlocking key (3) is gradually out of the initial state; further comprising an unlocking notch (12) arranged above the limiting boss (11), the lock key element (8) gradually enters the unlocking notch (12) when the unlocking key (3) is rotated after the lock key element (8) leaves the limiting boss (11); the unlocking key (3) returns to the initial state when the external force applied to the unlocking key is removed.

2. Combination key comprising an unlocking key (3) and a working key (2), characterized in that, Further comprising a limiting locking device, the limiting locking device comprising: a lock key element (8) arranged to keep synchronous linear sliding with the working key (2); a limiting slot (32) arranged to keep synchronous linear sliding up and down with the unlocking key (3); the lock key element (8) is located in the limiting slot (32) when the unlocking key (3) is in the initial state; the lock key element (8) gradually leaves the limiting slot (32) when the unlocking key (3) is linearly slid downward and gradually out of the initial state; the linear sliding direction of the lock key element (8) is different from the linear sliding direction of the limiting slot (32); further comprising an unlocking notch (12) arranged above the limiting slot (32), the lock key element (8) gradually enters the unlocking notch (12) when the working key (2) is linearly slid after the lock key element (8) leaves the limiting slot (32); the unlocking key (3) returns to the initial state when the external force applied to the unlocking key is removed.

3. The combination key of claim 2, wherein Further comprising a sliding rod, the back or side of the unlocking key (3) is further provided with a sliding groove (40), and the sliding rod is installed in the sliding groove (40).

4. An automatic walking device characterized by The combination key has the combination key as claimed in any one of claims 1-3. The combination key has the combination key as claimed in any one of claims 1-3.

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