Combined key and automatic walking device having the same

Abstract

The application provides a combination key and an automatic walking device with the combination key. The combination key comprises an unlocking key, a working key and a limiting locking device. The limiting locking device comprises a locking element driven by the unlocking key or the working key. The locking element is arranged close to a limiting surface or a limiting groove on the back of the working key or the unlocking key in an initial state, so as to prevent the working key from being pressed. In the process of the unlocking key sliding and gradually leaving the initial state, the locking element slides relative to the limiting surface or the limiting groove and gradually leaves the limiting surface or the limiting groove; or in the process of the unlocking key sliding and gradually leaving the initial state, the locking element is driven by the unlocking key or the working key and gradually leaves the limiting surface or the limiting groove. Thus, the application releases the limitation on the working key, and the working key can be pressed to drive the automatic walking device to move at this time. The user must keep exerting external force on 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 HOME key, START key and stop key and other working keys on the operation panel. The automatic walking device returns to the base station after the HOME key is pressed, starts to perform the mowing work after the START key is pressed, and stops working after the stop key is pressed. Usually, the automatic walking device is set to directly press the corresponding key to drive the corresponding action of the device. 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 pressing it once. 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. When misoperation occurs, as long as the unlocking key is touched, the working key can be operated at will. Such a protection design still has a risk of misoperation. SUMMARY

[0004] In view of the deficiencies of the prior art and in order to solve the above-mentioned problems, the present application provides a combined key and an automatic walking device with the same. When the unlocking key in the combined key is in the initial state (locked state), the working key is locked to prevent misoperation of the working key. When the unlocking key is switched to the unlocked state, the unlocking key needs to be kept applying external force at all times to press the working key and thus drive the automatic walking device to act, which more effectively avoids the danger caused by misoperation.

[0005] To achieve the above-mentioned purposes, 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 linearly slide synchronously with the unlocking key; a limiting surface arranged to rotate synchronously with the working key; when the unlocking key is in the initial state, the lock key element and the limiting surface are arranged close to each other; and during the process that the unlocking key linearly slides and gradually deviates from the initial state, the lock key element gradually deviates from the limiting surface.

[0006] Optionally, the combined key as described above, wherein the upper end surface of the lock key element abuts against the lower end surface of the limiting surface when the unlocking key is in the initial state.

[0007] Optionally, the combined key as described above, wherein the front end of the limiting surface is provided with an unlocking notch, and the lock key element gradually enters the unlocking notch during the rotation of the working key after the lock key element is separated from the limiting surface.

[0008] 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 comprising: a lock key element arranged to rotate synchronously with the working key; a limiting groove arranged to slide linearly synchronously with the unlocking key; the lock key element being located in the limiting groove when the unlocking key is in an initial state; and the lock key element gradually separating from the limiting groove during the linear sliding of the unlocking key and the gradual separation from the initial state.

[0009] Optionally, the combined key as described above, wherein the rear end of the limiting groove is provided with a groove separation notch, and the lock key element gradually enters the groove separation notch during the rotation of the working key after the lock key element is separated from the limiting groove.

[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 arranged to slide linearly synchronously with the unlocking key; a limiting surface arranged to slide linearly up and down synchronously with the working key; the lock key element and the limiting surface being arranged close to each other when the unlocking key is in an initial state; the lock key element gradually separating from the limiting surface during the linear sliding of the unlocking key and the gradual separation from the initial state; and the linear sliding direction of the lock key element being different from the linear sliding direction of the limiting surface.

[0011] Optionally, the combined key as described above, wherein the upper end surface of the lock key element abuts against the lower end surface of the limiting surface when the unlocking key is in the initial state.

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

[0013] Optionally, the combined key as described above, wherein the front end of the limiting surface is provided with an unlocking notch, and the lock key element gradually enters the unlocking notch during the downward sliding of the working key after the lock key element is separated from the limiting surface.

[0014] In a fourth aspect, the present application provides a further combined key, which comprises an unlocking key and a working key, and further comprises a position-limiting locking device. The position-limiting locking device comprises: a locking key element, which is arranged to linearly slide up and down synchronously with the working key; a position-limiting groove, which is arranged to linearly slide synchronously with the unlocking key; when the unlocking key is in an initial state, the locking key element is located in the position-limiting groove; during the process that the unlocking key linearly slides and gradually departs from the initial state, the locking key element gradually departs from the position-limiting groove; the linear sliding direction of the locking key element is different from the linear sliding direction of the position-limiting groove.

[0015] Optionally, the combined key described above, wherein the rear end of the position-limiting groove is provided with a groove-departure notch, after the locking key element departs from the position-limiting groove, the locking key element gradually enters the groove-departure notch during the process that the working key slides downward.

[0016] The present application also simultaneously provides an automatic walking device, which has the combined key described above.

[0017] The present application has the beneficial effect that, by using the position-limiting locking device of the combined key, and especially by using the locking key element driven by the unlocking key or the working key, the locking key element is arranged close to the position-limiting surface or the position-limiting groove on the back surface of the working key in the initial state, or close to the position-limiting groove of the unlocking key, so as to prevent the working key from being pressed. During the process that the unlocking key slides and gradually departs from the initial state, the locking key element slides relative to the position-limiting surface or the position-limiting groove and gradually departs from the position-limiting surface or the position-limiting groove, thereby releasing the position limitation on the working key. Alternatively, during the process that the unlocking key slides and gradually departs from the initial state, the locking key element is driven by the unlocking key or the working key and gradually departs from the position-limiting surface or the position-limiting groove, thereby releasing the position limitation on the working key. At this time, the working key can be pressed to drive the automatic walking device to work. In this way, the user must keep exerting external force on the unlocking key to unlock the automatic walking device, thereby avoiding the danger caused by misoperation.

[0018] Further, by arranging a lifting part capable of lifting the working key at the front end of the stop key, the working key and the stop key are linked by the lifting part, and the working key is lifted by the lifting part when the stop key is pressed, so as to reset the working key and stop the automatic walking device from working.

[0019] In addition, the second rotating shaft for fixing the stop key is arranged close to the lower end surface of the locking key element, and the locking key element is located between the second rotating shaft and the position-limiting surface. Thus, the locking key element can be supported by the second rotating shaft at the initial state, thereby avoiding the locking key element from being broken or deformed due to excessive pressure caused by misoperation of the working key. Thus, the locking key element can be designed to be relatively thin, thereby reducing the thickness of the combined key.

[0020] Further, the present application further sets reset devices along the moving direction of the unlocking key and the working key on the back side of the unlocking key and the working key respectively, wherein the reset device corresponding to the unlocking key is set to be close to horizontal, and the reset device of the working key is set to be close to vertical. Thus, after the operation on the keys is withdrawn, the original initial state can be directly recovered by the reset device driving the corresponding working key and unlocking key, further improving the safety. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structure diagram of the first combined key provided by the present application;

[0022] Figure 2 is the structure diagram of the control box for installing the unlocking key in the first combined key of the present application;

[0023] Figure 3 is the schematic diagram of the installation mode of the unlocking key in the first combined key of the present application;

[0024] Figure 4 is the schematic diagram of the connection mode of the lock key element connected with the unlocking key and the reset device thereof in the first combined key of the present application;

[0025] Figure 5 is the schematic diagram of the connection mode of the lock key element and the unlocking key in the first combined key of the present application;

[0026] Figure 6 is the schematic diagram of the working key in the first combined key of the present application;

[0027] Figure 7 is the schematic diagram of the installation position relationship between the working key and the unlocking key in the first combined key of the present application;

[0028] Figure 8 is Figure 7 is the schematic diagram of the position relationship between the lock key element and the working key in the A-A section of the first combined key in the initial state;

[0029] Figure 9 is Figure 7 is the schematic diagram of the position relationship between the lock key element and the working key in the A-A section of the first combined key in the unlocking state;

[0030] Figure 10 is the structure diagram of the unlocking key in the second combined key of the present application;

[0031] Figure 11 is the structure diagram of the working key in the second combined key of the present application;

[0032] Figure 12 is the schematic diagram of the position relationship between the lock key element and the working key in the second combined key of the present application in the initial state;

[0033] Figure 13 is a schematic diagram of the position relationship between the stop button and the working button in the combination button of the present application;

[0034] Figure 14 is a schematic diagram of the position relationship between the stop button and the working button in the combination button of the present application;

[0035] Figure 15 is a schematic diagram of the position relationship between the second rotating shaft and the lock button element in the combination button of the present application;

[0036] Figure 16 is a schematic diagram of the automatic walking device having the combination button of the present application;

[0037] Figure 17 is a schematic diagram of the installation shell structure of the working button in the third combination button of the present application;

[0038] Figure 18 is a schematic diagram of the bottom of the installation method of the working button in the third combination button of the present application;

[0039] Figure 19 is a schematic diagram of the structure of the unlock button in the third combination button of the present application;

[0040] Figure 20 is a schematic diagram of the working button in the third combination button of the present application;

[0041] Figure 21 is a schematic diagram of the position relationship between the working button and the unlock button in the initial state in the third combination button of the present application;

[0042] Figure 22 is a schematic diagram of the position relationship between the working button and the unlock button in the unlocked state in the third combination button of the present application;

[0043] Figure 23 is a schematic diagram of the working button in the fourth combination button of the present application;

[0044] Figure 24 is a schematic diagram of the structure of the unlock button in the fourth combination button of the present application;

[0045] Figure 25 is a schematic diagram of the position relationship between the working button and the unlock button in the initial state in the fourth combination button of the present application;

[0046] Figure 26 is a schematic diagram of the position relationship between the working button and the unlock button in the unlocked state in the fourth combination button of the present application. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions of the embodiments of the present application. Obviously, the described embodiments are part 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 a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present application.

[0048] 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 one of ordinary skill in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted to have idealized or overly formal meanings unless otherwise defined herein.

[0049] 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 direction opposite to the sliding unlocking of the unlocking key is the back, and not a specific limitation on the device mechanism of the present application.

[0050] 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 right side of the sliding unlocking direction of the combined key is the right, and not a specific limitation on the device mechanism of the present application.

[0051] 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 side opposite to the side for user operation is the down, and not a specific limitation on the device mechanism of the present application.

[0052] In the present application, the meaning of "connection" can be direct connection between components or indirect connection between components through other components.

[0053] In the present application, the initial state, i.e. the locked state, refers to the state that the work key is restricted and cannot be pressed to trigger the corresponding work of the automatic walking device. In the present application, the unlocked state refers to the state that the work key is not restricted and can be pressed to trigger the corresponding work of the automatic walking device.

[0054] Reference Figure 1 As shown in the figure, the combined key 1 provided by the present application includes an unlocking key 3, a work key 2 and a limiting locking device. The work key 2 can be specifically arranged on the left and right sides of the unlocking key 3. The work key includes a Start key and a Home key. Reference Figure 2 As shown in the figure, the limiting locking device is arranged on the control box 10. Reference Figures 3 to 9The limiting and locking device comprises a lock key element 8 arranged to slide synchronously with the unlocking key 3, and a limiting surface 11 arranged on the back of the working key. When the unlocking key is in the initial state, as shown in Figure 8 , the lock key element 8 and the limiting surface 11 are arranged close to each other, and the lock key element 8 is arranged near the starting position of the working key when it is pressed downward, so as to abut against the limiting surface 11 of the working key when the working key is misoperated, thereby preventing the working key from continuing to move downward. Due to the abutment of the lock key element 8 against the limiting surface 11, the working key cannot be pressed in the initial state, thereby avoiding misoperation. As shown in Figure 9 , the lock key element 8 gradually moves away from the limiting surface 11 in the process of gradually moving away from the initial state of the lock key element 8 along with the sliding of the unlocking key 3, and the limitation of the lock key element on the movement stroke of the working key is cancelled. Thus, when the user keeps pushing the unlocking key to move the lock key element away from the initial state, the working key can be pressed 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 connected with the working key, and forward sliding is unlocking and backward sliding is locking. The working key comprises two or more working keys, which are arranged on both sides of the unlocking key along the axial direction of the first rotation shaft.

[0055] As shown in Figure 4 , the process of backward sliding and locking can be realized by a reset device. The reset device comprises an elastic body 9, one end of which abuts against the bottom of the unlocking key, and the other end of which abuts against the inner wall of the control box 10. When the external force applied to the unlocking key is removed, the elastic body 9 pushes the unlocking key to restore it to the initial state. A possible implementation of the elastic body is realized by a spring.

[0056] As shown in Figure 8 or Figure 9 , the limiting surface can further be provided with an unlocking notch 12 for accommodating the lock key element 8. After the lock key element moves away from the limiting surface, the lock key element gradually enters the unlocking notch along with the rotation process of the working key. Thus, the working key can rotate around the first rotation shaft 7 within an angle range of the initial state and the unlocking state. In the initial state, the angle range of the working key rotating around the first rotation shaft is limited by the lock key element in front of the limiting surface; and in the unlocking state, the angle range of the working key rotating around the first rotation shaft is limited by the lock key element within the depth range of the unlocking notch 12.

[0057] The application further provides another combined key, as shown in Figures 10 to 13 , which comprises a limiting and locking device arranged between the unlocking key 3 and the working key 2. The limiting and locking device in the embodiment specifically comprises:

[0058] a lock key element 8 arranged to rotate synchronously with the working key 2.

[0059] a limiting groove 32 which is linearly slidable synchronously with the unlocking key 3;

[0060] When the unlocking key 3 is in the initial state, the lock key element 8 is located in the limiting groove 32; during the linear sliding of the unlocking key 3 and the gradual departure from the initial state, the lock key element 8 gradually departs from the limiting groove 32.

[0061] Referring to Figure 10 As shown, the unlocking key 3 is provided with a limiting groove 32 at the bottom end, and the rear side of the limiting groove 32 is provided with a groove departure notch 33. The unlocking key 3 further comprises a reset device, which can be selected as an elastic component such as a spring, to restore the unlocking key 3 to the initial state after the external force applied to the unlocking key 3 is removed.

[0062] Referring to Figure 11 As shown, the back or side of the working key 2 is provided with a lock key element 8 which can be accommodated in the limiting groove 32. The lock key element 8 is rod-shaped or sheet-shaped. Figures 12 to 13 As shown, during the process of switching from the locked state to the unlocked state, the unlocking key 3 is pushed by the user and moves forward along the plane where the automatic walking device is located. During the movement, the limiting groove 32 moves forward synchronously with the unlocking key 3, so that the lower end surface of the lock key element 8 departs from the upper end surface step structure of the limiting groove 32 and enters the range of the groove departure notch 33. Since the lower side of the groove departure notch 33 is provided with a vacancy, it does not block the vertical movement of the lock key element 8, so that in the unlocked state, the working key 2 is not blocked by the lock key element 8 or the limiting groove 32, and in the unlocked state, the working key 2 can be pressed by the user to trigger the automatic walking device to enter the corresponding working state.

[0063] In another implementation manner of the present application, the above-mentioned combined key is applied to Figure 16 As shown, the automatic walking device. The automatic walking device 13 comprises a casing, a walking wheel is arranged below the casing, and a key box 14 of the combined key as described above is arranged on the upper part of the casing.

[0064] The automatic walking device comprises a casing, and a key box 14 is arranged on the upper part of the casing. 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. Figure 14 、 Figure 15As shown, the stop button 5 can rotate around the second rotation shaft 6; the unlocking button 3 arranged on the control box can slide forward and backward in the control box 10. The elastic body 9 arranged on the control box is fixed at one end of the control box 10 and can apply force to the unlocking button 3 at the other end to keep the unlocking button in the initial state when no external force is applied. The lock button element 8 arranged on the unlocking button 3 or the working button 2 can move with the unlocking button 3 or the working button 2. The lock button element 8 limits the rotatable movement of the Home button by cooperating with the upper limiting surface 11 of the Home button or the upper limiting groove 32 of the unlocking button 3.

[0065] In the state that the above-mentioned automatic walking device is horizontally placed, the linear sliding of the lock button element 8 or the unlocking button 3 is in the horizontal or nearly horizontal direction, and is forward or backward relative to the main body structure of the automatic walking device.

[0066] As shown, Figure 6 by overcoming the action of the elastic body 9 by external force, the lock button 13 is pushed to drive the lock button element 8 to slide forward, and the lock button element 8 is separated from the cooperation of the upper limiting surface 11 of the Home button to the position of the unlocking notch 12 on the Home button. At this time, the Home button can be rotated.

[0067] As shown, Figure 14 , Figure 15 The stop button 5 is arranged at the rear side of the unlocking button; the stop button includes a stop button main body and a lifting part arranged at the front end of the stop button main body. The second rotation shaft 6 is arranged between the stop button main body and the lifting part, so that when the stop button is pressed down, the lifting part is correspondingly lifted up. The lifting part is arranged at the lower side of the working button, so that the working button is lifted up by the lifting part when the stop button is pressed down. Thus, the automatic walking device stops working. When the stop button is in the initial state and is not pressed down, the lifting part is located at the terminal position of the movement track of the working button rotating around the shaft and does not contact the working button. At this time, the working button can be pressed down by the operator according to the unlocking of the unlocking button.

[0068] The above-mentioned combined button, wherein the unlocking notch 12 of the working button further comprises a reset protrusion; the lifting part of the stop button is arranged at the lower side of the reset protrusion and is located on the movement track of the reset protrusion rotating. The lifting part of the stop button and the stop button main body can be respectively located at the front and rear sides of the first rotation shaft 7 to realize the lifting of the reset protrusion and further lift the working button to avoid the working button being triggered by mistake.

[0069] As shown, Figure 15The combination key as described above, wherein the unlocking key is in the initial state, the upper side of the second rotating shaft 6 is close to the lower end surface of the lock key element, the lock key element is between the second rotating shaft and the limiting surface, and the second rotating shaft bears the pressure caused by the working key being pressed on the limiting surface. Thus, the lock key element can be made of a relatively thin material without worrying about whether its mechanical strength is sufficient to bear the force when the working key is pressed. Thus, the lock key element can be provided with a protrusion on the upper end surface, and when the unlocking key is in the initial state, the protrusion is close to or abuts against the lower end surface of the limiting surface, thereby achieving the limiting of the working key and preventing accidental triggering.

[0070] The lock key element as described above can be typically selected as a rod or a sheet. Other structures capable of achieving similar locking and unlocking functions also belong to the scope of the lock key element in the present application. Other structures capable of achieving the locking and unlocking functions also fall within the protection scope of the present application.

[0071] To facilitate the automatic walking device to sense the state of each key, the stop key body or the supporting portion or the working key can also be provided with a magnetic body. The lower side of the control box of the combination key is also provided with a Hall element at a position opposite to the magnetic body. Through the sensing of the magnetic body by the Hall element, it can be known that each key is lifted or pressed, and the automatic walking device is correspondingly switched in different working states.

[0072] In other implementation manners, as shown in Figure 17 , the working key 2 is clamped in the mounting frame 41 in the combination key 1, and the reset device 9 is abutted between the lower surface of the mounting frame 41 and the working key 2 below, so that the working key 2 can return to the initial position when the external force is removed. The positioning frame of the lock key 3 is also provided between the two mounting frames 41 in which the Start key and the Home key are mounted. As shown in Figure 18 , the front end surface or the rear end surface of the positioning frame is also provided with an elastic member support 42 for mounting an elastic member for controlling the reset of the lock key 3. One end of the elastic member abuts on the elastic member support 42, and the other end abuts on the abutting plate surface at the bottom of the lock key 3, so as to return the lock key 3 to the initial state when the user does not apply a pushing force to the lock key 3.

[0073] As shown in Figures 19 to 22 , the limiting and locking device comprises:

[0074] The lock key element 8 is arranged to keep synchronous linear sliding with the unlocking key 3;

[0075] The limiting surface 11 is arranged to keep synchronous linear sliding up and down with the working key 2;

[0076] When the unlocking key 3 is in the initial state, the locking key element 8 and the limiting surface 11 are arranged close to each other; when the unlocking key 3 slides linearly and gradually leaves the initial state, the locking key element 8 gradually leaves the limiting surface 11.

[0077] refer to Figure 19 As shown, the two side walls of the unlocking key are provided with locking key elements 8 protruding toward the working key 2. Figure 20 As shown, reference Figure 21 As shown, a nearly L-shaped groove is provided on the side wall surface of the working key 2 close to the unlocking key 3, with the corner portion of the groove facing forward, and a limited position surface 11 is formed on the upper side of the corner portion. The vertical notch of the L-shaped groove is set as an unlocking notch 12.

[0078] In the initial state, refer to Figure 21 The locking element 8 is positioned in close proximity to the limiting surface 11. The locking element 8 is positioned near the starting point of the downward stroke of the operating key. When the operating key is mistakenly operated, it abuts the lower end surface of the limiting surface 11 of the operating key, preventing it from further downward movement. Due to the abutment of the locking element 8 against the limiting surface 11, the operating key cannot be pressed in its initial state, thereby preventing it from being mistakenly operated.

[0079] As the lock key element 8 linearly slides forward along with the unlocking key 3 and gradually leaves the initial state, the linear sliding direction of the lock key element 8 is horizontal or nearly horizontal. Figure 22As shown, the lock key element 8 gradually leaves the limiting surface 11 and enters the lower part of the unlocking notch 12, and the restriction of the lock key element 8 to the working key movement is removed. Thus, when the user holds the unlocking key to push the lock key element out of the initial state, the working key can be pressed down, and the lock key element 8 connected thereto can be accommodated in the space of the unlocking notch 12, so that the working key is not restricted by the lock key element. After the lock key element 8 leaves the limiting surface 11, the lock key element 8 gradually enters the unlocking notch 12 during the downward sliding process of the working key 2. In the above process, when the unlocking key is in the initial state, the unlocking key is in the same plane as the working key, and the sliding direction of the unlocking key is basically consistent with the advancing direction of the automatic walking device installed thereby. The edge of the working key is connected with a sliding rod fixed relative to the overall structure of the combined key 1, and the back or side of the working key 2 is further provided with a sliding groove 40, and the sliding rod is installed in the sliding groove 40 to provide guidance, so that the working key can only be pressed downward or popped up by the reset device 9. In particular, the sliding rod is fixed on the shell of the device, and the working key slides up and down. In the locked state and the unlocked state, the sliding rod is located at the bottom and the top of the sliding groove, respectively. The unlocking key slides forward to unlock and slides backward to lock. The unlocking key also includes a reset device 9 for restoring the unlocking key 3 to the initial state after the external force applied to the unlocking key 3 is removed. The working key includes two or more working keys, which are arranged on both sides of the unlocking key along the axial direction of the first rotating shaft.

[0080] Reference Figure 19 As shown, the process of backward sliding and locking can be achieved by the reset device. The reset device 9 includes an elastic body, one end of which abuts against the bottom of the unlocking key, and the other end of which abuts against the inner wall of the positioning frame. When the external force applied to the unlocking key is removed, the elastic body pushes the unlocking key to restore it to the initial state. A possible implementation of the elastic body is achieved by a spring.

[0081] The present application also provides another combined key, referring to Figures 23 to 26 which includes an unlocking key 3 and a working key 2, and further includes a limiting locking device, the limiting locking device comprising:

[0082] a lock key element 8 arranged to linearly slide up and down synchronously with the working key 2;

[0083] a limiting groove 32 arranged to linearly slide synchronously with the unlocking key 3; the linear sliding direction of the limiting groove 32 is horizontal or close to horizontal.

[0084] When the unlocking key 3 is in the initial state, the lock key element 8 is located in the limiting groove 32; during the linear sliding process of the unlocking key 3 and the gradual departure from the initial state, the lock key element 8 gradually leaves the limiting groove 32.

[0085] ReferenceFigure 23 or Figure 24 As shown in Fig. 2, the lock element 8 protrudes from the side wall surface of the working key 2 to extend to the side wall of the unlocking key 3. Referring to Fig. 3, the lower part of the unlocking key 3 is provided with a limiting slot 32. In the initial state, the lower end surface of the lock element 8 abuts against the upper end surface of the limiting slot 32. The upper end surface of the limiting slot 32 and the upper end surface of the unlocking key 3 are formed with a groove for accommodating the lock element 8, as shown in Fig. 4. Figure 24 Figure 23 As shown in Fig. 4, the groove of the lock element 8 extends forward to form a disengaging notch 33.

[0086] Referring to Fig. 5, the disengaging notch 33 is provided in front of the limiting slot 32 for accommodating the lock element 8. After the lock element 8 is disengaged from the limiting slot 32, the lock element 8 gradually enters the disengaging notch 33 during the process of pressing the working key. Thus, the working key can be moved in the direction of the sliding slot 40 within the two height ranges of the initial state and the unlocking state. In the initial state, the working key is limited below the limiting surface by the lock element; in the unlocking state, the working key is limited within the range of the disengaging notch 33 by the lock element during the downward movement in the direction of the sliding slot 40. Figure 26 When the force applied to the unlocking key 3 and the working key 2 is removed, the restoring device 9 provided behind the unlocking key 3 and the working key 2 respectively applies a horizontal force and a vertical force to them to restore them to the initial state.

[0087] In another implementation of the present application, the above-mentioned combined key is applied to an automatic walking device, as shown in Fig. 6. The automatic walking device comprises a housing 13, a walking wheel provided below the housing, and a key box 14 provided on the upper part of the housing, wherein the key box 14 comprises the above-mentioned combined key.

[0088] Figure 16 The automatic walking device comprises a housing 13, and a key box 14 provided on the upper part of the housing. The key box 14 comprises the above-mentioned combined key. or 11, the unlocking key is pushed to slide forward by overcoming the action of the elastic body 9, and the lock element is disengaged from the limiting surface or the limiting slot 32 to reach the position of the unlocking notch 12 or the disengaging notch 33, at which time the working key can be pressed to trigger the automatic walking device to change the working state.

[0089] Figure 22 In the state that the above-mentioned automatic walking device is horizontally placed, the linear sliding of the working key is in the horizontal or nearly horizontal direction, and is forward or backward relative to the main body structure of the automatic walking device.

[0090] In the state that the above-mentioned automatic walking device is horizontally placed, the linear sliding of the working key is in the horizontal or nearly horizontal direction, and is forward or backward relative to the main body structure of the automatic walking device.

[0091] Referring to Fig. 7, the unlocking key 3 is provided with a limiting surface 31, and the working key 2 is provided with a lock element 8. The lock element 8 is arranged to abut against the limiting surface 31 in the initial state. Figure 25 Figure 26 ​​​As 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. A rotating shaft 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, so that the work 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 rotating around the shaft, and does not contact the work button, so that the work button can be pressed by the operator according to the unlocking of the unlock button.

[0092] 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.

[0093] 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 mounting frame 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 to the magnetic body, it can be known that each button is lifted or pressed, and then the automatic walking device is correspondingly controlled to switch between different working states.

[0094] 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, which is arranged on an automatic walking device, comprising an unlocking key (3) and a working key (2), characterized in that, Further comprising a limiting locking device, the limiting locking device comprises: A lock key element (8) is arranged to keep synchronous linear sliding with the unlocking key (3); A limiting surface (11) is arranged to keep synchronous rotation with the working key (2); When the unlocking key (3) is in the initial state, the lock key element (8) and the limiting surface (11) are arranged to abut, and the working key cannot be pressed down in the initial state due to the abutment of the lock key element (8) to the limiting surface (11); When the lock key element (8) gradually leaves the initial state along with the sliding of the unlocking key (3), the lock key element (8) gradually leaves the limiting surface (11), and the restriction of the lock key element to the working key movement stroke is removed; when the user keeps pushing the lock key to make the lock key element leave the initial state, the working key can be pressed down and is not restricted by the lock key element; When the external force applied to the unlocking key is removed, the unlocking key returns to the initial state, and when the unlocking key is in the initial state, the unlocking key and the working key are located in the same plane, and the sliding direction of the unlocking key is perpendicular to the rotation shaft connected with the working key.

2. The combination key of claim 1, wherein When the unlocking key (3) is in the initial state, the upper end surface of the lock key element (8) abuts against the lower end surface of the limiting surface (11).

3. The combination key of claim 2, wherein, The front end of the limiting surface (11) is provided with an unlocking notch (12), and after the lock key element (8) leaves the limiting surface (11), the lock key element (8) gradually enters the unlocking notch (12) along with the rotation process of the working key (2).

4. Combination key, which is arranged on an automatic walking device, comprising an unlocking key (3) and a working key (2), characterized in that, Further comprising a limiting locking device, the limiting locking device comprises: A lock key element (8) is arranged to keep synchronous linear sliding with the unlocking key (3); A limiting surface (11) is arranged to keep synchronous rotation with the working key (2); When the unlocking key (3) is in the initial state, the lock key element (8) and the limiting surface (11) are arranged to abut, and the working key cannot be pressed down in the initial state due to the abutment of the lock key element (8) to the limiting surface (11); 5. The combination key of claim 4, wherein, When the lock key element (8) gradually leaves the initial state along with the sliding of the unlocking key (3), the lock key element (8) gradually leaves the limiting surface (11), and the restriction of the lock key element to the working key movement stroke is removed; when the user keeps pushing the lock key to make the lock key element leave the initial state, the working key can be pressed down and is not restricted by the lock key element; 6. A combination key provided on an automatic walking device, characterized by When the external force applied to the unlocking key is removed, the unlocking key returns to the initial state, and when the unlocking key is in the initial state, the unlocking key and the working key are located in the same plane, and the sliding direction of the unlocking key is perpendicular to the rotation shaft connected with the working key. When the unlocking key (3) is in the initial state, the upper end surface of the lock key element (8) abuts against the lower end surface of the limiting surface (11). The front end of the limiting surface (11) is provided with an unlocking notch (12), and after the lock key element (8) leaves the limiting surface (11), the lock key element (8) gradually enters the unlocking notch (12) along with the rotation process of the working key (2). Further comprising a limiting locking device, the limiting locking device comprises: A lock key element (8) is arranged to keep synchronous linear sliding with the unlocking key (3); A limiting surface (11) is arranged to keep synchronous rotation with the working key (2); A limiting surface (11) is arranged to linearly slide up and down synchronously with the working key (2); the front end of the limiting surface (11) is provided with an unlocking notch (12); When the unlocking key (3) is in the initial state, the locking key element (8) and the limiting surface (11) are arranged to abut, the locking key element (8) is arranged near the initial position of the working key being pressed down, and thus abuts the lower end surface of the limiting surface (11) of the working key when the working key is misoperated, thereby preventing the working key from continuing to move downward; During the linear sliding of the unlocking key (3) and the gradual departure from the initial state, the locking key element (8) gradually departs from the limiting surface (11) and enters the lower part of the unlocking notch (12), the limitation of the working key movement by the locking key element (8) is removed, so that the working key is not limited by the locking key element; When the external force applied to the unlocking key is removed, the unlocking key returns to the initial state; when the unlocking key is in the initial state, the unlocking key and the working key are located in the same plane, and the sliding direction of the unlocking key is basically consistent with the advancing direction of the automatic walking device; The linear sliding direction of the locking key element (8) is different from the linear sliding direction of the limiting surface (11).

7. The combination key of claim 6, wherein, When the unlocking key (3) is in the initial state, the upper end surface of the locking key element (8) abuts the lower end surface of the limiting surface (11).

8. The combination key of claim 6, wherein, Further comprising a sliding rod, the back or side of the working key (2) is further provided with a sliding groove (40), and the sliding rod is installed in the sliding groove (40).

9. The combination key of claim 6, wherein, After the locking key element (8) departs from the limiting surface (11), the locking key element (8) gradually enters the unlocking notch (12) during the downward sliding process of the working key (2).

10. A combination key provided on an automatic walking device, characterized by Comprising: An unlocking key (3), a working key (2), and a limiting locking device, the limiting locking device comprising: A locking key element (8) arranged to linearly slide up and down synchronously with the working key (2); A limiting groove (32) arranged to linearly slide synchronously with the unlocking key (3); the rear end of the limiting groove (32) is provided with a groove departure notch (33), When the unlocking key (3) is in the initial state, the locking key element (8) is located in the limiting groove (32); During the linear sliding of the unlocking key (3) and the gradual departure from the initial state, the locking key element (8) gradually departs from the limiting groove (32); The locking key element (8) protrudes from the side wall surface of the working key (2) to extend to the side wall of the unlocking key (3); the unlocking key (3) is provided with a limiting groove (32) at the lower part; In the initial state, the lower end surface of the locking key element (8) abuts the upper end surface of the limiting groove (32); after the locking key element (8) departs from the limiting groove (32), it gradually enters the groove departure notch (33) during the pressing process of the working key, so that the working key can slide downward; when the external force applied to the unlocking key is removed, the unlocking key returns to the initial state.

11. An automatic walking device characterized by The combination key has the advantages of the combination key according to any one of claims 1-10.

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