Electronic device

Abstract

The present application discloses an electronic device, which includes a frame, a signal triggering device fixed inside the frame, and a key mounted through the frame. The frame is provided with a key hole opposite to the signal triggering device, and a stop protrusion is provided on the inner side wall of the key hole. The key includes a key post passing through the frame and adjacent to the signal triggering device, a key cap connecting the key post and cooperating with the key hole, and a clamping plate buckled on the side of the key cap facing the signal triggering device. The clamping plate is provided with a hook that is in limit cooperation with the stop protrusion. The hook of the clamping plate realizes safe limit and anti-disengagement of the key cap, and ensures the stability between the clamping plate and the key cap, so that the stability of the key structure is improved and the assembly difficulty is reduced.

Description

Technical Field

[0001] The application relates to the field of communication devices, and particularly to an electronic device. Background Art

[0002] Currently, buttons are provided in electronic devices to control the electronic devices using the buttons. Currently, the buttons often have snap rings provided at the ends of the key columns. The snap rings abut against the limiting structures, and the limiting structures are used to limit the snap rings to prevent the buttons from detaching from the frames of the electronic devices and ensure the safety of the buttons. Since the installation space at the ends of the key columns is limited, the structural performance of the snap rings and the ends of the key columns is reduced, and there are difficulties in assembly. Summary of the Invention

[0003] An embodiment of the present application provides an electronic device. The electronic device includes a frame, a signal triggering device fixed inside the frame, and a button inserted through the frame. The frame is provided with a button hole opposite to the signal triggering device. A stop protrusion is provided on the inner side wall of the button hole. The button includes a key column passing through the frame and adjacent to the signal triggering device, a key cap connecting the key column and cooperating with the button hole, and a card plate fastened to the side of the key cap facing the signal triggering device. The card plate is provided with a catch for limiting cooperation with the stop protrusion.

[0004] In the electronic device provided by the embodiment of the present application, a stop protrusion is provided on the inner side wall of the button hole. The button includes a card plate fastened to the side of the key cap facing the signal triggering device. The card plate is provided with a catch for limiting cooperation with the stop protrusion. The catch of the card plate realizes safety limiting and anti-detachment of the key cap, and ensures the stability of the card plate and the key cap, so that the structural stability of the button is improved and the assembly difficulty is reduced. Description of the Drawings

[0005] In order to more clearly illustrate the technical solutions of the application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0006] Figure 1 is a cross-sectional schematic diagram of the electronic device provided by the embodiment of the present application;

[0007] Figure 2 is a partial cross-sectional schematic diagram of the electronic device provided by the embodiment of the present application;

[0008] Figure 3 is Figure 1 an enlarged schematic diagram of part III of the electronic device;

[0009] Figure 4 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0010] Figure 5 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0011] Figure 6 It is another cross-sectional schematic view of an electronic device provided in an embodiment of the present application;

[0012] Figure 7 It is a partial exploded schematic view of an electronic device provided in an embodiment of the present application;

[0013] Figure 8 is Figure 6 an enlarged schematic view of part VI of the electronic device;

[0014] Figure 9 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0015] Figure 10 It is a cross-sectional schematic view of an electronic device provided in an embodiment of the present application;

[0016] Figure 11 It is a cross-sectional schematic view of an electronic device provided in an embodiment of the present application;

[0017] Figure 12 It is a cross-sectional schematic view of an electronic device provided in another embodiment of the present application;

[0018] Figure 13 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0019] Figure 14 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0020] Figure 15 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0021] Figure 16 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0022] Figure 17 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application;

[0023] Figure 18 It is a partially enlarged schematic view of an electronic device provided in another embodiment of the present application. Detailed implementation manners

[0024] The technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the application.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , the present application provides an electronic device 100. The electronic device 100 includes a frame 10, a signal triggering device 20 fixed inside the frame 10, and a key 30 mounted on the frame 10. The frame 10 is provided with a key hole 11 opposite to the signal triggering device 20. A stop projection 12 is provided on the inner side wall of the key hole 11. The key 30 includes a key post 31 passing through the frame 10 and adjacent to the signal triggering device 20, a key cap 32 connected to the key post 31 and cooperating with the key hole 11, and a clamping plate 33 buckled on the side of the key cap 32 facing the signal triggering device 20. The clamping plate 33 is provided with a hook 331 for limiting cooperation with the stop projection 12.

[0026] It can be understood that the electronic device 100 can be a terminal device such as a mobile phone, a tablet computer, a notebook computer, etc., or a smart wearable device such as a smart watch, smart earphones, smart glasses, etc. By pressing the key cap 32, the key cap 32 transmits the pressing moment to the key post 31, so that the key post 31 can trigger the signal triggering device 20 to emit a signal to realize the control of the electronic device 100. The hook 331 can hook the stop projection 12 to prevent the key cap 32 from detaching from the key hole 11 of the frame 10.

[0027] By providing the stop projection 12 on the inner side wall of the key hole 11, the key 30 includes a clamping plate 33 buckled on the side of the key cap 32 facing the signal triggering device 20, the clamping plate 33 is provided with a hook 331 for limiting cooperation with the stop projection 12, and the hook 331 of the clamping plate 33 realizes the safety limit and anti-detachment of the key cap 32, and ensures the stability of the clamping plate 33 and the key cap 32, so that the structural stability of the key 30 is improved and the assembly difficulty is reduced.

[0028] In the conventional technical solution, the key 30 and the frame 10 are assembled together by means of a snap ring assembly form. The frame 10 is provided with a key post 31 hole, the key post 31 of the key 30 passes through the key post 31 hole, a clamping groove is provided at the end of the key post 31, and the snap ring is clamped in the clamping groove to achieve the stability of the snap ring and the key post 31. By making the outer diameter of the snap ring larger than the inner diameter of the key post 31 hole, the snap ring can abut against the open end of the key post 31 hole to prevent the key post 31 from disengaging from the key post 31 hole, thereby assembling the key 30 and the frame 10 of the electronic device 100 together. However, since a space is also required at the end of the key post 31 for the sealing structure to seal with the key post 31 hole, the combination of the end of the key post 31 and the snap ring is limited, and it increases the difficulty of assembling the snap ring and the key post 31, and easily reduces the stability of the key post 31 and the snap ring, and reduces the safety of the key 30. In the embodiment of the present application, compared with the conventional technology, the snap plate 33 and the key cap 32 are buckled together, which increases the stability of the snap plate 33 and the key cap 32, and facilitates the assembly of the snap plate 33 and the key cap 32. The hook 331 of the snap plate 33 is matched with the stop protrusion 12 to prevent the snap plate 33 and the key cap 32 from disengaging from the key hole 11, ensuring the safety of the key 30.

[0029] In this embodiment, the frame 10 serves as a frame structural member of the electronic device 100, provides a bearing and supporting force for each component of the electronic device 100, and makes the overall structure of the electronic device 100 stable. The frame 10 can provide safety protection for the electronic device 100 by using rigid stress, and achieve protection performances such as anti-falling, anti-breaking, and anti-cracking of the electronic device 100. The frame 10 can be closely matched with the external structural members of the electronic device 100 to achieve protection performances such as dust prevention, water prevention, and fire prevention.

[0030] Specifically, the frame 10 is provided with an outer side surface 13 and an inner side surface 14 opposite to the outer side surface 13. The inner side surface 14 can be jointly composed of a flat surface and a non-flat surface, that is, the inner side surface 14 of the frame 10 can be provided with a plurality of depressions and a plurality of protrusions, so that the inner side of the frame 10 can be adapted to and stabilize each component. The inner side surface 14 is an interface where the frame 10 can generally enclose an inner space. The outer side surface 13 can be jointly composed of a flat surface and a non-flat surface, that is, the outer side surface 13 can also be provided with a plurality of depressions and a plurality of protrusions. The outer side surface 13 is an appearance surface that generally forms the frame 10. The inner side surface 14 encloses to form a receiving space 15. The receiving space 15 is used to receive each functional component, and the functional component can be a main board, a signal triggering component 20, a camera, a sensor, a memory, an antenna and other components.

[0031] The frame 10 is further provided with a first end face 16 and a second end face 17 opposite to the first end face 16. The inner side face 14 and the outer side face 13 connect the first end face 16 and the second end face 17. The first end face 16 and the second end face 17 can respectively cooperate with the front structural member and the back structural member of the electronic device 100, and the front structural member and the back structural member are respectively the structural member facing the user and the structural member facing away from the user when the electronic device 100 is in use. For example, the front structural member is a display screen, and the back structural member is a back cover. Both the first end face 16 and the second end face 17 can be composed of a combination of a flat surface and a non-flat surface, that is, both the first end face 16 and the second end face 17 can be provided with a plurality of recesses and protrusions.

[0032] In this embodiment, the signal trigger device 20 is fixed in the receiving space 15 inside the frame 10. The signal trigger device 20 can be electrically connected to the internal components of the electronic device 100 to receive the triggering action of the key 30 and send a trigger signal to other functional components so that the functional components respond and the functional components of the electronic device 100 are controlled. The signal trigger device 20 is fixed in the receiving space 15 near the inner side surface 14. The signal trigger device 20 is turned on or off by the interference of the key column 31 by setting a switch circuit, thereby triggering an electrical signal.

[0033] Optionally, the signal trigger device 20 conflicts with the key column 31 , and the sensitivity of the signal trigger device 20 receiving the conflicting effect of the key column 31 is increased.

[0034] Optionally, there is a certain distance between the signal trigger device 20 and the key column 31 , so that there is a safe distance between the key column 31 and the signal trigger device 20 , thereby reducing the impact force of the key column 31 on the signal trigger device 20 .

[0035] In this embodiment, the keycap 32 and the key column 31 are stacked and integrally extend through the frame 10. The keycap 32 is adjacent to the outer side surface 13 of the frame 10. The key column 31 is adjacent to the inner side surface 14 of the frame 10. The key column 31 is at least partially located between the outer side surface 13 and the inner side surface 14 to facilitate the frame 10 to support and press the key column 31. The card plate 33 is located between the outer side surface 13 and the inner side surface 14 to facilitate the card plate 33 to cooperate with the stop protrusion 12. The button hole 11 extends from the outer side surface 13 to the inner side surface 14. The card plate 33 is adjacent to the bottom of the button hole 11 relative to the keycap 32.

[0036] Specifically, the keyhole 11 extends from the outer side surface 13 towards the inner side surface 14. The inner peripheral sidewall of the keyhole 11 is generally in clearance fit with the outer peripheral sidewall of the keycap 32 to guide the relative pressing and sliding of the keycap 32 with respect to the frame 10. A part of the keycap 32 is received in the keyhole 11, and a part is exposed outside the keyhole 11. When the keycap 32 slides relative to the frame 10 under a pressing force, the keycap 32 can be completely retracted into the keyhole 11.

[0037] During the assembly of the key 30, first, the key post 31 is inserted into the frame 10 so that the end of the key post 31 can be aligned with the signal triggering device 20; then, the clamping plate 33 is installed in the keyhole 11 so that the hook 331 of the clamping plate 33 can hook the stop projection 12; finally, the keycap 32 is snapped onto the clamping plate 33 to make the keycap 32 and the clamping plate 33 firm, and the keycap 32 is connected to the key post 31.

[0038] Specifically, the length direction of the key post 31 is generally perpendicular to the inner side surface 14 and the outer side surface 13 of the frame 10, so as to facilitate the key post 31 to receive the pressing force of the keycap 32 and slide relative to the frame 10 in a direction perpendicular to the inner side surface 14 and the outer side surface 13, and make the sliding force of the key post 31 act on the signal triggering device 20 intensively.

[0039] Two stop projections 12 are respectively arranged on two opposite inner sidewalls of the keyhole 11. The two stop projections 12 respectively limit the sliding of the opposite ends of the keycap 32 to achieve balanced limiting of the keycap 32 and prevent the keycap 32 from tilting up.

[0040] More specifically, two steps 111 are respectively provided on two opposite inner sidewalls of the keyhole 11, and the two stop projections 12 are respectively arranged at the two steps 111. There is a certain sliding distance between the hook 331 and the keycap 32, and the stop projection 12 slides within the sliding distance.

[0041] The keycap 3 is in the shape of a plate. The keycap 32 is generally perpendicular to the length direction of the key post 31. The area of the surface of the keycap 32 away from the key post 31 is larger than the end face area of the key post 31 to facilitate the keycap 32 to receive the pressing force and transmit the pressing force to the key post 31.

[0042] Optionally, the keycap 32 is a long strip-shaped plate member. The length direction of the keycap 32 is substantially parallel to the length direction of the frame 10. The keycap 32 is connected to the key post 31 at a position between the two ends, so that the keycap 32 faces the key post 31, facilitating the keycap 32 to effectively transmit the pressing force to the key post 31 and reducing the possibility of the keycap 32 tilting under the pressing force.

[0043] Optionally, the surface of the keycap 32 away from the key post 31 may protrude relative to the outer side surface 13, facilitating the user to touch the outer side of the frame 10 and quickly feel the position of the keycap 32, thereby improving the convenience of the user pressing the keycap 32.

[0044] It can be understood that when the hook 331 hooks the stop projection 12, the keycap 32 is away from the bottom of the keyhole 11 relative to the signal trigger device 20, ensuring that the keycap 32 does not detach from the frame 10 and the keycap 32 can receive the pressing force. When the hook 331 is separated from the stop projection 12, it means that the keycap 32 approaches the bottom of the keyhole 11 under the action of the pressing force. The two ends in the length direction of the keycap 32 finally abut against the step surfaces of the two steps 111 respectively, that is, the stop projection 12 abuts against the keycap 32 to limit the keycap 32 from continuing to approach the signal trigger device 20, avoiding the key post 31 touching the signal trigger device 20 too much and ensuring the safety of the signal trigger device 20. The sliding of the stop projection 12 between the hook 331 and the keycap 32 ensures the safe sliding distance of the keycap 32. Of course, in other embodiments, the two stop projections 12 may also be respectively arranged on the opposite two flat inner side walls of the keyhole 11.

[0045] The stop projection 12 is arranged on the inner side wall of the keyhole 11, so that there is no need to provide a snap ring structure at the end of the key post 31, ensuring the effectiveness of the end of the key post 31 and facilitating the effective sealing of the key post 31 and the frame 10. The clamping plate 33 is quickly and conveniently installed in the keyhole 11. Clamping the keycap 32 and the clamping plate 33 realizes the firmness of the keycap 32 and the clamping plate 33. The keycap 32 cooperates with the clamping plate 33 and the stop projection 12, ensuring the safe sliding limit of the key 30, increasing the reliability of the key 30, and being quickly and conveniently assembled, reducing the assembly cost and ensuring the effectiveness of the key 30.

[0046] Optionally, the keycap 32 may also be in the shape of a disc, and the geometric central axis of the keycap 32 is aligned with the geometric central axis of the key post 31. Of course, the keycap 32 may also be in the shape of a triangular plate member, a polygonal plate member or other arbitrarily formed plate members.

[0047] Optionally, a surface of the keycap 32 away from the key column 31 may be substantially flush with the outer surface 13 to increase the flatness of the outer structure of the frame 10 .

[0048] Optionally, a side of the keycap 32 away from the key column 31 may be concave relative to the outer side surface 13 to prevent the key 30 from being impacted by a fall when the electronic device 100 falls, thereby ensuring the safety of the key 30 .

[0049] Optionally, an end surface of the key column 31 away from the key cap 32 may protrude relative to the inner side surface 14 , so that the key column 31 can be easily connected to the signal triggering device 20 .

[0050] Optionally, an end surface of the key column 31 away from the keycap 32 may be flush with the inner side surface 14 to ensure the flatness of the inner structure of the frame 10 and improve the utilization rate of the receiving space 15 .

[0051] Optionally, the end surface of the key column 31 away from the key cap 32 may be concave relative to the inner surface 14 , and one end of the key column 31 extends relative to the frame 10 by receiving the pressing action of the key cap 32 and acts on the signal trigger device 20 .

[0052] Furthermore, two inner side walls of the key hole 11 facing each other in the length direction are respectively provided with two stop protrusions 12 , and two hooks 331 are respectively provided on the two ends of the clamping plate 33 corresponding to the length direction of the key cap 32 .

[0053] In this embodiment, the two stop protrusions 12 are respectively arranged on the two inner side walls of the key hole 11 that are opposite to each other in the length direction. The length direction of the card plate 33 is parallel to the length direction of the keycap 32. The card plate 33 can be fastened with the keycap 32 between the two hooks 331. The portion of the card plate 33 between the two hooks 331 is pressed against the side of the keycap 32 facing the signal trigger device 20, so that the card plate 33 and the keycap 32 are firmly fastened. In the process of fastening the card plate 33 and the keycap 32, the card plate 33 is first installed on the bottom of the key hole 11, and then the keycap 32 and the card plate 33 are pressed. The bottom of the key hole 11 and the keycap 32 jointly clamp the card plate 33, and finally the card plate 33 and the keycap 32 are firmly fastened.

[0054] In this embodiment, the card plate 33 is a bent metal plate. A connecting arm 334 is disposed between the two hooks 331. The hooks 331 are bent relative to the connecting arms 334, and the hooks 331 and the connecting arms 334 are integrally formed. The card plate 33 may be formed by a stamping process. The connecting arms 334 abut against the side of the keycap 32 facing the key column 31, thereby securing the connecting arms 334 to the keycap 32. The hooks 331 can be elastically bent relative to the connecting arms 334. During the process of installing the card plate 33 in the button hole 11, the hook 331 at one end of the card plate 33 is pressed against the inner wall of the button hole 11, so that the hook 331 at one end can hook the stop protrusion 12, and then the hook 331 at the other end is squeezed to make the connecting arm 334 bend and deform, and then the hook 331 at the other end is inserted into the button hole 11 and hooks the stop protrusion 12, so that the card plate 33 is installed in the bottom of the button hole 11, and the two hooks 331 can hook the stop protrusion 12 respectively.

[0055] In another embodiment, see Figure 4 , the card plate 33 is a plastic part. The two hooks 331 of the card plate 33 and the part between the two hooks 331 are integrally arranged. The card plate 33 is provided with a buckle 332 between the two hooks 331. The card plate 33 is buckled with the keycap 32 using the buckle 332. The end of the hook 331 has an inclined surface 333 facing the bottom side of the key hole 11, and the inclined surface 333 at the end of the hook 331 is used to slide relative to the stop protrusion 12 to reduce the sliding pressing resistance of the stop protrusion 12 to the hook 331. By applying a pressing force toward the bottom of the key hole 11 to the card plate 33, the card plate 33 is made to slide into the bottom of the key hole 11, and the two hooks 331 can finally hook the two stop protrusions 12.

[0056] In another embodiment, see Figure 5 The card plate 33 is a component integrally formed of metal and non-metal parts. The hooks 331 are metal. The portion between the two hooks 331 is non-metal. The hooks 331 can be elastically bent relative to the portion connected to the keycap 32 to facilitate the insertion of the card plate 33 into the keyhole 11.

[0057] Further, see Figure 6 、 Figure 7 and Figure 8, in this embodiment, the keycap 32 is provided with two rivet holes 321, and the two rivet holes 321 are respectively located at both ends of the keycap 32 in the length direction. The rivet holes 321 extend from the side of the keycap 32 facing the key post 31 to the side away from the key post 31. The key 30 further includes two rivets 40 that pass through the clamping plate 33 and are in interference fit with the two rivet holes 321 respectively.

[0058] The rivet holes 321 extend from one side of the keycap 32 facing the bottom of the key hole 11 to the other side. The rivet holes 321 are provided at the ends of the keycap 32 so that both ends of the clamping plate 33 are stable with both ends of the keycap 32 respectively. The rivet 40 includes a rivet head 41 and a rivet post 42 extending from the rivet head 41. Two through holes 335 are respectively provided at both ends of the connecting arm 334 of the clamping plate 33 near the two hooks 331. The two through holes 335 can respectively face the two rivet holes 321 of the keycap 32. The rivet post 42 passes through the through hole 335 and is inserted into the rivet hole 321. The outer peripheral side wall of the rivet post 42 is in interference fit with the inner peripheral side wall of the rivet hole 321. The rivet head 41 abuts against the outside of the opening end of the through hole 335, so that the rivet head 41 and the keycap 32 jointly clamp the connecting arm 334, making the clamping plate 33 and the keycap 32 stable. By using the interference fit between the rivet post 42 and the rivet hole 321, only by applying a pressing force to the keycap 32, the effective fastening of the keycap 32 and the clamping plate 33 can be achieved. During the installation of the keycap 32, first, pass the rivet through the through hole 335 of the clamping plate 33, then jointly install the rivet and the clamping plate 33 into the key hole 11, and finally combine the keycap 32 with the rivet 40 to fasten the clamping plate 33 and the keycap 32.

[0059] In another embodiment, please refer to Figure 9 , and Figure 8The illustrated embodiments are substantially the same, except that the card plate 33 is screwed to the keycap 32. Specifically, on the side of the keycap 32 away from the bottom of the keyhole 11, there is a screw hole 329 facing the other side. The key 30 further includes a screw 39 passing through the screw hole 329. The card plate 33 is provided with a screw hole 338 facing the screw hole 329, and the end of the screw 39 is screwed into the screw hole 338, so that the card plate 33 is fixed to the keycap 32 by the screw 39. During the assembly of the keycap 32, first, the card plate 33 is inserted into the keyhole 11, then the keycap 32 is abutted against the card plate 33, and finally, the screw 39 is inserted into the screw hole 329 from the outer side surface 13 of the keycap 32, and the end of the screw 39 is screwed into the screw hole 338 of the card plate 33, so that the card plate 33 and the keycap 32 are firmly fixed. It can be understood that in order to ensure the appearance performance of the key 30, the key 30 further includes a cover plate 38 covering the outside of the keycap 32. The cover plate 38 can be adhered to the keycap 32. After the keycap 32 is screwed to the card plate 33, the cover plate 38 is adhered to the keycap 32.

[0060] Further, please continue to refer to Figure 6 、 Figure 7 and Figure 8 , in this embodiment, the keycap 32 is provided with a card slot 322, and the card slot 322 extends from the side of the keycap 32 facing the key post 31 to the side away from the key post 31. The card plate 33 is provided with a protrusion 335 fixed to the card slot 322 between the two rivets 40, and a concave groove is formed corresponding to the protrusion 335. One end of the key post 31 is connected to the card plate 33 and the keycap 32 through the groove.

[0061] In this embodiment, the card slot 322 extends from the side of the keycap 32 facing the bottom of the keyhole 11 to the opposite side. The protrusion 335 of the card plate 33 is formed by bending through a stamping process. The groove is formed on the side of the protrusion 335 facing the bottom of the keyhole 11. The end of the key post 31 away from the signal trigger device 20 can be directly fixed in the groove, or can be indirectly connected to the keycap 32 through other devices in cooperation with the groove.

[0062] Specifically, the button 30 further includes an elastic gasket 34 fixedly connecting the key column 31 and the clamping plate 33, and at least a part of the elastic gasket 34 is fixed in the groove. The key column 31 is firmly connected to the clamping plate 33 and the key cap 32 through the elastic gasket 34. By pressing the key cap 32, the key cap 32 transmits the pressing moment to the key column 31 through the clamping plate 33 and the elastic gasket 34, so that the key column 31 can trigger the signal trigger device 20 to emit a signal, thereby realizing the control of the electronic device 100.

[0063] In the conventional technical solution, the key cap 32 and the key column 31 of the button 30 are of an integral structure or a structure that is firmly fixed in other ways. Generally, the two ends of the key cap 32 are relatively long. If one end of the key cap 32 is pressed, the other end will be lifted. At the same time, the electronic device 100 is provided with a guiding structure for sliding and guiding the key column 31. After the key cap 32 is lifted, it is easy to cause the non-coaxiality of the key column 31 and the guiding structure, resulting in the situation that the button 30 is stuck. Therefore, designing the key column 31 and the key cap 32 as a non-integral structure and setting the key cap 32 and the key column 31 to be movably connected is beneficial to various forms of pressing of the key cap 32. Even if the key cap 32 is lifted, it will not cause the non-coaxiality of the key column 31 and the guiding structure, ensuring the effectiveness of the button 30.

[0064] In the embodiment of the present application, by using the elastic gasket 34 to be connected between the key cap 32 and the key column 31, and utilizing the elastic deformation performance of the elastic gasket 34, the key cap 32 can move relative to the key column 31, avoiding the key column 31 from tilting and getting stuck after the key cap 32 is lifted, preventing the button 30 from failing, ensuring the effective pressing performance of the button 30, and increasing the service life of the button 30.

[0065] During the assembly process of the button 30, first, the key column 31 is inserted into the frame 10 so that the end of the key column 31 can be aligned with the signal trigger device 20; then, the elastic gasket 34 is fixed to the end of the key column 31 away from the signal trigger device 20 so that the key column 31 and the elastic gasket 34 are firmly connected; then, the clamping plate 33 is inserted into the button hole 11, and the clamping hook 331 hooks the stop protrusion 12; finally, the key cap 32 is installed on the frame 10, and the key cap 32 is buckled with the clamping plate 33. The card slot 322 of the key cap 32 is engaged with the protrusion 335 of the clamping plate 33, making the clamping plate 33 and the key cap 32 more stable and increasing the connection stability between the elastic gasket 34 and the key cap 32.

[0066] It can be understood that when the pressing force received by the keycap 32 is offset relative to the key column 31, causing one end of the keycap 32 to tilt, one end of the elastic gasket 34 is compressed and deformed, while the other end is in a tensile deformation, that is, the elastic gasket 34 absorbs the tilting force of the keycap 32, preventing the tilting force of the keycap 32 from being transmitted to the key column 31 and preventing the key column 31 from tilting. Under the action of connecting the key column 31 and the keycap 32 by the elastic gasket 34, the keycap 32 is separated from the key column 31, and the key column 31 can always keep its length direction facing the signal triggering device 20. The key column 31 can effectively trigger the signal triggering device 20 and can be effectively reset to avoid jamming.

[0067] The elastic gasket 34 is substantially perpendicular to the length direction of the key column 31. One relatively large area surface of the elastic gasket 34 is attached to the end face of the key column 31. The other relatively large area of the elastic gasket 34 is attached to the bottom surface of the groove. The keycap 32 completely covers the elastic gasket 34 to ensure effective contact between the keycap 32 and the clamping plate 33 and the elastic gasket 34.

[0068] Optionally, the surface of the elastic gasket 34 connecting the key column 31 completely covers the end face of the key column 31.

[0069] Optionally, the surface of the elastic gasket 34 connecting the key column 31 partially covers the end face of the key column 31.

[0070] In this embodiment, the elastic gasket 34 is a silicone gasket, and the elastic gasket 34 and the key column 31 and the clamping plate 33 can be bonded by double-sided tape. The clamping plate 33 is provided with the groove 334 between the two through holes 335, and the elastic gasket 34 is partially fixed in the groove 334 to increase the stability of the elastic gasket 34 with the clamping plate 33 and the keycap 32. Utilizing the elastic compression performance of the elastic gasket 34, the elastic gasket 34 can effectively compensate for the tolerance between the keycap 32 and the key column 31, so that within the tolerance range, the function of the key 30 can be well guaranteed. Utilizing the elastic buffering performance of the elastic gasket 34, it can be ensured that under extreme working conditions, during the collision of the key 30, the impact force is transmitted to the elastic gasket 34, and the elastic gasket 34 absorbs the impact force, rather than allowing the key column 31 to receive the impact force and trigger the signal triggering device 20, avoiding failure when the electronic device 100 is dropped and ensuring the service life of the electronic device 100.

[0071] Optionally, the elastic gasket 34 is bonded in the groove 334 with glue, and the groove 334 can also prevent the glue from overflowing.

[0072] Optionally, the elastic gasket 34 can also be completely fixed within the groove 334.

[0073] Optionally, the elastic gasket 34 can also be a metal elastic gasket 34. The elastic gasket 34 can be fixedly bonded to the clamping plate 33 and the key post 31 with glue.

[0074] Optionally, the elastic gasket 34 can also be an elastic foam sheet.

[0075] In other embodiments, a through hole is provided at the position of the clamping plate 33 facing the key post 31. The elastic gasket 34 is fixed to the end of the key post 31 and passes through the through hole to be firmly connected to the keycap 32.

[0076] Furthermore, the key 30 further includes two elastic members 50. The elastic members 50 are sleeved on the ends of the rivets 40 and are elastically compressed between the keycap 32 and the bottom of the key hole 11.

[0077] In this embodiment, the elastic member 50 is a rectangular spring. One end of the elastic member 50 is sleeved on the rivet head 41 to use the rivet head 41 to guide the compression of the elastic member 50 and increase the stability of the elastic member 50 with the keycap 32 and the clamping plate 33. The side of the elastic member 50 away from the clamping plate 33 abuts against the bottom of the key hole 11. When the hook 331 hooks the stop projection 12, the keycap 32 cannot continue to move out of the key hole 11 under the limiting action of the stop projection 12, and the elastic member 50 is pre-compressed between the keycap 32 and the frame 10. The elastic member 50 provides an elastic restoring force for the keycap 32 to move away from the bottom of the key hole 11, so that the keycap 32 can automatically reset under the elastic action of the elastic member 50 after the pressing force is withdrawn. Of course, in other embodiments, the elastic member 50 can be any one of a torsion spring, an elastic silica gel block or an elastic rubber block.

[0078] Optionally, a mating hole is provided at the bottom of the key hole 11 facing the rivet head 41. One end of the elastic member 50 away from the clamping plate 33 can be fixed in the mating hole to use the mating hole 119 to increase the stability of the elastic member 50 with the frame 10 and guide the compression deformation of the elastic member 50 by the inner side wall of the mating hole 119.

[0079] Optionally, a column is provided at the bottom of the key hole 11. One end of the elastic member 50 away from the clamping plate 33 is sleeved on the column. One end of the elastic member 50 away from the bottom of the key hole 11 passes through the clamping plate 33 and is inserted into the keycap 32 to realize the firm connection of the elastic member 50 between the keycap 32 and the frame 10.

[0080] Further, a key button guiding hole 16 communicating with the key button hole 11 is disposed on one side of the frame 10 adjacent to the signal triggering device 20, and the key post 31 passes through the key button guiding hole 16 and is in clearance fit with the key button guiding hole 16.

[0081] In this embodiment, the key button guiding hole 16 serves as a pressing and sliding guiding structure for the key button 30, so that the key post 31 can always slide in a fixed direction facing the signal triggering device 20. The key button guiding hole 16 extends from the inner side surface 14 towards the outer side surface 13. The key button guiding hole 16 penetrates through the inner side surface 14 and communicates with the key button hole 11, so that one end of the key post 31 can penetrate through the inner side surface 14 of the frame 10 under the pressing action of the key cap 32. The inner peripheral side wall of the key button guiding hole 16 effectively guides the sliding of the key post 31 relative to the frame 10, so that the key post 31 can always slide relative to the signal triggering device 20 while maintaining a direction generally facing the signal triggering device 20.

[0082] Optionally, the length of the key post 31 is greater than the depth of the key button guiding hole 16 to ensure that one end of the key post 31 can extend out of the key button guiding hole 16.

[0083] Optionally, one end of the key button guiding hole 16 remote from the inner side surface 14 is generally adjacent to the outer side surface 13, so that a larger part of the key cap 32 is exposed on the outer side surface 13, facilitating the key cap 32 to receive a pressing force.

[0084] Optionally, one end of the key button guiding hole 16 remote from the inner side surface 14 is generally located at a position intermediate between the outer side surface 13 and the inner side surface 14, so as to facilitate a certain safety distance between the key button guiding hole 16 and the outer side surface 13, preventing dust and impurities outside the frame 10 from entering the key button guiding hole 16 to interfere with the sliding of the key post 31 relative to the frame 10.

[0085] Further, a sealing ring 311 is provided on the circumferential direction of one end of the key post 31 remote from the key cap 32, and the outer peripheral side wall of the sealing ring 311 is in interference fit with the inner peripheral side wall of the key button hole of the key button 30.

[0086] In this embodiment, the sealing ring 311 has elastic deformation performance. The outer diameter of the sealing ring 311 in the natural stretching state is larger than the inner diameter of the key guiding hole 16. After the sealing ring 311 enters the key guiding hole 16 along with the key post 31, the sealing ring 311 is compressed and deformed under the extrusion of the inner peripheral side wall of the key guiding hole 16, so that the sealing ring 311 can be in close contact with the inner peripheral side wall of the key guiding hole 16 to a large extent, realizing that the sealing ring 311 blocks the gap between the inner peripheral wall of the key guiding hole 16 and the outer peripheral wall of the key post 31. The sealing ring 311 can effectively prevent water, dust, and impurities from entering the inside of the frame 10 through the gap between the outer wall of the key post 31 and the inner peripheral side wall of the key guiding hole 16. For example, the electronic device 100 is a smart watch, and the electronic device 100 uses the sealing ring 311 to seal the inner peripheral side walls of the key post 31 and the key guiding hole 16, so that the electronic device 100 can meet the 5ATM waterproof requirement.

[0087] Specifically, a clamping groove 313 is provided along the circumferential direction at one end of the key post 31 away from the elastic gasket 34. The width of the clamping groove 313 is approximately equal to the difference between the outer diameter and the inner diameter of the sealing ring 311. The sealing ring 311 is sleeved on the circumferential side of the key post 31, and a part of the sealing ring 311 is clamped into the clamping groove 313. The sealing ring 311 is detachably connected to the key post 31 to facilitate the disassembly and maintenance of the sealing ring 311. During the process of assembling the key 30 to the frame 10, first, the sealing ring 311 is sleeved on the circumferential side of the key post 31, and then the key post 31 and the sealing ring 311 are integrally inserted into the key guiding hole 16. The fitting gap between the key hole 11 and the key cap 32 is larger than the gap between the key guiding hole 16 and the key post 31, so as to prevent the outer wall of the key cap 32 from being stuck to the inner peripheral side wall of the key hole 11 after one end of the key cap 32 warps. After the key cap 32 is pressed, even if one end warps, it can ensure the telescopic movement of the key post 31 relative to the frame 10 and also ensure the effective reset of the key cap 32.

[0088] Optionally, the sealing ring 311 and the key post 31 are integrally formed to increase the tightness between the sealing ring 311 and the key post 31.

[0089] Optionally, the sealing ring 311 is made of silicone material to increase the elastic sealing performance and friction resistance of the sealing ring 311.

[0090] Optionally, the sealing ring 311 is made of rubber material to increase the service life of the sealing ring 311.

[0091] Further, please refer to Figure 8 、Figure 10 and Figure 11 The electronic device 100 further includes a mainboard 60 fixed in the frame 10 , and the signal triggering device 20 is disposed on the mainboard 60 .

[0092] In this embodiment, the mainboard 60 is fixed within the receiving space 15. The signal trigger device 20 is disposed on an edge of the mainboard 60 adjacent to the inner side surface 14. A processor 61 is provided on the mainboard 60. The signal trigger device 20 is electrically connected to the processor 61 to send electrical signals to the processor 61. The processor 61 processes the electrical signals from the signal trigger device 20 into various control instructions and sends the control instructions to the various functional components of the electronic device 100, thereby enabling the operation of the various functional components of the electronic device 100 to be controlled by the buttons 30.

[0093] Specifically, the signal trigger device 20 includes a trigger base 21, a static contact 22 disposed on the trigger base 21, a dynamic contact 23 opposite the static contact 22, and an elastic return member 24 connected between the static contact 22 and the dynamic contact 23. One end of the key column 31 is abutted against the dynamic contact 23. The trigger base 21 is fixed to the substrate of the main board 60. The relative direction of the static contact 22 and the dynamic contact 23 is roughly aligned with the end of the key column 31, so that the key column 31 can slide and press the dynamic contact 23 into contact with the static contact 22. After the dynamic contact 23 contacts the static contact 22, the logic circuit of the signal trigger device 20 is disconnected or connected, thereby generating an electrical signal.

[0094] Optionally, the elastic return member 24 is a metal spring, and the elastic return member 24 is isolated from the moving contact 23 by an insulating member, and ensures that the moving contact 23 can automatically reset after contacting the static contact 22 .

[0095] Optionally, there is a distance between the key column 31 and the moving contact 23 .

[0096] Optionally, the key column 31 is in contact connection with the moving contact 23 .

[0097] Optionally, the signal triggering device 20 is a pressure sensor. The signal triggering device 20 utilizes a pressure sensing sheet to receive the pressing action of the key column 31 to trigger an electrical signal.

[0098] Furthermore, the electronic device 100 further includes a light-transmitting cover plate 70 covering the frame 10 and a display screen 71 attached to the light-transmitting cover plate 70 and located between the light-transmitting cover plate 70 and the frame 10. The electronic device 100 further includes a back plate 6272 covering the side of the frame 10 facing away from the light-transmitting cover plate 70.

[0099] In this embodiment, the light-transmitting cover plate 70 and the back plate 6272 are respectively covered on the first end face 16 and the second end face 17 of the frame 10. The light-transmitting cover plate 70 is hermetically connected to the frame 10, and the back plate 6272 is hermetically connected to the frame 10 to meet the waterproof requirements of the electronic device 100. The display screen 71 is electrically connected to the main board 60 to receive the control signal of the processor 61, so that the display screen 71 can display images.

[0100] In one embodiment, the electronic device 100 further includes a wearable accessory 80, and the wearable accessory 80 is detachably connected to the frame 10. The wearable accessory 80 is a watch band. The ends of the wearable accessory 80 are detachably connected to two opposite sides of the frame 10. The side of the wearable accessory connected to the frame 10 is adjacent to the side where the button 30 is provided. The electronic device 100 is a smart watch. The lengths of the four sides of the frame 10 are substantially equal. The frame 10 can be provided with a plurality of the buttons 30 on two sides adjacent to the wearable accessory. The electronic device 100 can be controlled by using the plurality of buttons 30.

[0101] Optionally, the electronic device 100 can also be a smart wristband. The wearable accessory 80 is a wristband.

[0102] In another embodiment, as Figure 12 shown, the electronic device 100 is a mobile phone. The frame 10 has two opposite short sides 101 and two opposite long sides 102. The button 30 is mounted on the long side 102.

[0103] Optionally, the button 30 is mounted on both long sides of the electronic device 100.

[0104] Optionally, two buttons 30 are mounted on the long side 102 of the electronic device 100, and the two buttons 30 can be a volume up button and a volume down button.

[0105] Optionally, one button 30 is mounted on the long side 102 of the electronic device 100. The button 30 can be a screen wake-up button, and the button 30 can also perform the functions of turning on and off the mobile phone.

[0106] Optionally, the button 30 can also be mounted on the short side 101 of the frame 10.

[0107] Further, please refer to Figure 13The keycap 32 has two guide posts 339 at opposite ends on the side facing the signal triggering device 20. The bottom of the keyhole 11 has guide holes 109 that are clearance-matched with the two guide posts 339. The elastic gasket 34 and the keypost 31 are located between the two guide posts 339. The guide posts 339 cooperate with the guide holes 109 to effectively guide the two ends of the keycap 32 in sliding motion, preventing the keycap 32 from tilting significantly and ensuring the effectiveness of the key 30.

[0108] In another embodiment, see Figure 14 The keycap 32 is provided with a plurality of pressing parts arranged along the length direction, the key 30 includes a plurality of key columns 31, and the plurality of key columns 31 are respectively connected to the keycap 32 opposite the plurality of pressing parts, and the electronic device 100 includes a plurality of signal triggering devices 20, and the plurality of signal triggering devices 20 are respectively adjacent to the ends of the plurality of key columns 31.

[0109] Optionally, the keycap 32 is provided with a first pressing portion 3281 and a second pressing portion 3282 opposite to the first pressing portion 3281 along the length direction. The key 30 includes two key columns 31 and two elastic gaskets 34. The two key columns 31 are respectively opposite to the first pressing portion 3281 and the second pressing portion 3282. The two elastic gaskets 34 are respectively opposite to the first pressing portion 3281 and the second pressing portion 3282. The electronic device 100 includes two signal triggering devices 20 fixed in the frame 10 and respectively adjacent to the two key columns 31. By pressing the first pressing portion 3281, the first pressing portion 3281 transmits the pressing force to the elastic gasket 34 opposite thereto, and transmits it to the key column 31 opposite thereto through the elastic gasket 34, thereby finally triggering the signal triggering device 20 opposite thereto. Because the keycap 32 is connected to the two key columns 31 via the two elastic gaskets 34, when the first pressing portion 3281 is pressed near the bottom of the keyhole 11, the second pressing portion 3282 can tilt relative to the first pressing portion 3281. The second pressing portion 3282 does not exert a pressing effect on the elastic gasket 34 opposite to it, and the signal triggering device 20 opposite to the second pressing portion 3282 is not triggered. It can be understood that the first pressing portion 3281 and the second pressing portion 3282 are independent of each other, so that the keycap 32 can trigger the two signal triggering devices 20 separately. That is, pressing different positions of the keycap 32 can trigger different operating instructions, realizing multi-functional control.

[0110] In another embodiment, see Figure 15, a third pressing portion 3283 is further arranged on the keycap 32 and located between the first pressing portion 3281 and the second pressing portion 3282. The key 30 includes three key columns 31 and three elastic gaskets 34. The three key columns 31 respectively face the first pressing portion 3281, the second pressing portion 3282, and the third pressing portion 3283. The three elastic gaskets 34 respectively face the first pressing portion 3281, the second pressing portion 3282, and the third pressing portion 3283. The electronic device 100 includes three signal triggering devices 20 fixed within the frame 10 and respectively adjacent to the three key columns 31. It can be understood that the first pressing portion 3281, the second pressing portion 3282, and the third pressing portion 3283 are independent of each other, so that the keycap 32 can respectively trigger the three signal triggering devices 20, that is, pressing different positions of the keycap 32 can trigger different operation instructions to achieve multi-functional control.

[0111] In another embodiment, please refer to Figure 16 , the key 30 includes two clamping plates 33, and the two clamping plates 33 are snap-connected to both ends of the keycap 32 in the length direction. The key column 31 connects the keycap 32 between the two clamping plates 33. A hook 331 is arranged at each clamping plate 33 away from the connection with the keycap 32, so that there is a safe sliding distance between the hook 331 and the keycap 32, and the stop protrusion 12 slides within the safe sliding distance. A through hole 335 is arranged on one side of the hook 331 of each clamping plate 33. The through hole 335 allows a rivet to pass through, and the pressing plate and the keycap 32 are riveted by the rivet. There is an accommodation space between the two clamping plates 33, and the accommodation space is for the key column 31 and the elastic gasket 34 to connect the keycap 32.

[0112] In another embodiment, please refer to Figure 17 , the key 30 includes a pressing plate 39 received in the key hole 11. A buckle 332 engaged with the keycap 32 is arranged on one side of the pressing plate 39 facing the keycap 32. The pressing plate 39 is snap-connected to the keycap 32 through the buckle 332. The clamping plate 33 is clamped between the pressing plate 39 and the keycap 32. The hook 331 protrudes relative to the pressing plate 39, and the key column 31 passes through the pressing plate 39 to connect the keycap 32. The pressing plate 39 presses the clamping plate 33 against the side of the keycap 32 facing the key column 31, so that the clamping plate 33 and the keycap 32 are firmly combined, and it is convenient to assemble the keycap 32 and the clamping plate 33.

[0113] In another embodiment, please refer to Figure 18, the card board 33 is provided with an elastic buckle 336, and the keycap 32 is provided with a fastening hole 327 on the side facing the signal trigger device 20. The elastic buckle 336 is clamped in the fastening hole 327. The elastic buckle 336 is formed by bending through a stamping process. The fastening hole 327 extends from one side of the keycap 32 facing the key post 31 to the other side. By using the elastic buckle 336 of the card board 33 to be fastened with the fastening hole 327 of the keycap 32, riveting the card board 33 and the keycap 32 by using rivets is avoided, the assembly stability of the card board 33 and the keycap 32 is increased, and the production cost is reduced.

[0114] The inner side wall of the keyhole is provided with a stop projection. The key includes a card board fastened to the side of the keycap facing the signal trigger device. The card board is provided with a catch for limiting cooperation with the stop projection. The catch of the card board realizes safety limit and anti-separation of the keycap, and ensures the stability of the card board and the keycap, so that the stability of the key structure is improved and the assembly difficulty is reduced. The above is the preferred implementation manner of the application. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the principle of the application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the application.

Claims

1. An electronic device, characterized in that, The electronic device includes a frame, a signal triggering device fixed on the inner side of the frame and a key installed on the frame, the frame is provided with a key hole facing the signal triggering device, the inner wall of the key hole is provided with a stop protrusion, the key includes a key column passing through the frame and adjacent to the signal triggering device, a key cap connected to the key column and matched with the key hole, and a card plate fastened to the side of the key cap facing the signal triggering device, the card plate is provided with a hook for limiting the stop protrusion, the key column and the key cap are designed to be a non-integrated structure, and the key cap and the key column are movably connected through an elastic gasket.

2. The electronic device according to claim 1, wherein The two stop protrusions are respectively arranged on two inner side walls of the key hole that are opposite to each other in the length direction, and the two ends of the clamping plate corresponding to the length direction of the key cap are respectively provided with two clamping hooks.

3. The electronic device according to claim 2, wherein The keycap is provided with two rivet holes, which are respectively located at both ends of the keycap in the length direction. The rivet holes extend from the keycap toward the key column to the side away from the key column. The key also includes two rivets that pass through the card plate and are interference fit with the two rivet holes respectively.

4. The electronic device according to claim 3, wherein The keycap is provided with a slot, which extends from the keycap toward the side of the key column to the side away from the key column. The card plate is provided with a protrusion fixed to the slot, and an inwardly concave groove is formed corresponding to the protrusion. One end of the key column is connected to the card plate and the keycap through the groove.

5. The electronic device according to claim 4, characterized in that, The elastic gasket is fixedly connected to the key column and the clamping plate, and the elastic gasket is at least partially fixed in the groove.

6. The electronic device according to claim 3, characterized in that The key further comprises two elastic members, which are respectively sleeved on the two ends of the rivet and elastically compressed on the keycap and the frame.

7. The electronic device according to any one of claims 1 to 6, characterized in that, A key guide hole communicating with the key hole is provided on one side of the frame adjacent to the signal trigger device, and the key column passes through the key guide hole and is gap-fitted with the key guide hole.

8. The electronic device according to claim 7, wherein A sealing ring is provided along the circumferential direction at one end of the key column away from the key cap, and the outer peripheral side wall of the sealing ring is interference-fitted with the inner peripheral side wall of the key guide hole.

9. The electronic device according to any one of claims 1 to 6, characterized in that The electronic device further includes a mainboard fixed in the frame, and the signal triggering device is arranged on the mainboard.

10. The electronic device according to any one of claims 1 to 6, characterized in that, The electronic device further includes a light-transmitting cover plate covering the frame and a display screen attached to the light-transmitting cover plate and located between the light-transmitting cover plate and the frame.

11. The electronic device according to claim 10, characterized in that, The electronic device further includes a back plate covering a side of the frame facing away from the light-transmitting cover plate.

12. The electronic device according to any one of claims 1 to 6, characterized in that, The electronic device further includes a wearable accessory, which is detachably connected to the frame.

13. The electronic device according to any one of claims 1 to 6, characterized in that, A guide column is provided on the side of the keycap facing the signal trigger. The guide column passes through the card plate and is located on the side of the card hook close to the key column. The frame is provided with a guide hole that is gap-matched with the guide column.

14. The electronic device according to claim 1, characterized in that, The keycap is provided with a plurality of pressing parts arranged along the length direction, the key includes a plurality of key columns, and the plurality of key columns are respectively connected to the keycap facing the plurality of pressing parts, and the electronic device includes a plurality of signal triggering devices, and the plurality of signal triggering devices are respectively adjacent to the ends of the plurality of key columns.

15. The electronic device according to claim 1, characterized in that, The key includes two clamping plates, and the two clamping plates are snap-connected to both ends of the keycap in the length direction, and the key column connects the keycap between the two clamping plates.

16. The electronic device according to claim 1, characterized in that, The key includes a pressing plate received in the key hole. A buckle for engaging with the keycap is provided on one side of the pressing plate facing the keycap. The pressing plate is snap-fitted to the keycap through the buckle. The clamping plate is snap-fitted between the pressing plate and the keycap. The hook extends relative to the pressing plate, and the key column passes through the pressing plate to connect the keycap.

17. The electronic device according to claim 1, characterized in that, The clamping plate is provided with an elastic buckle, and a snap hole is provided on one side of the keycap facing the signal triggering device. The elastic buckle is clamped in the snap hole.

Images