Switch

Abstract

The utility model provides a switch which comprises a springback key, a pressing plate piece and a transmission plate piece. The rebound key is configured to be pressed / rebounded in a first direction. The pressing plate piece faces the rebound key and is provided with a first hinge edge perpendicular to the first direction. The transmission plate piece is arranged between the springback key and the pressing plate piece. The transmission plate is provided with a plate part, a second hinge edge parallel to the first hinge edge is arranged on the side, away from the first hinge edge, of the plate part, the transmission plate is sequentially provided with a first contact part and a second contact part in the direction away from the second hinge edge, and the first contact part protrudes out of the plate part and makes contact with the pressing plate. And the second contact part protrudes out of the plate part and is in contact with the rebound key.

Description

Technical Field

[0001] The utility model relates to the technical field of switches. Background Art

[0002] In the prior art, the common switch structure design usually requires the pressing plate to rotate or press within a large angle range to realize the opening and closing function of the switch. Although this design can provide sufficient operating feel and feedback in some applications, since the pressing plate needs a large rotation angle, the thickness of the overall switch structure increases, thus restricting the thin design of the switch. In the trend that modern electronic devices increasingly pursue thinness and miniaturization, this relatively thick switch design is not ideal enough, which not only affects the appearance of the device but also may increase the manufacturing cost. Therefore, how to reduce the rotation stroke of the pressing plate while ensuring the operating feel and feedback to realize the thin design of the switch has become a problem to be solved in the prior art. Summary of the Utility Model

[0003] The utility model aims to provide a switch to at least solve or alleviate some of the problems existing in the prior art.

[0004] The utility model provides a switch, including a resilient key, a pressing plate and a transmission plate. The resilient key is configured to be pressed / rebounded in a first direction. The pressing plate is arranged facing the resilient key, and the pressing plate has a first hinge edge perpendicular to the first direction. The transmission plate is arranged between the resilient key and the pressing plate. The transmission plate has a plate portion, and a second hinge edge parallel to the first hinge edge is arranged on the side of the plate portion away from the first hinge edge. The transmission plate is sequentially provided with a first contact portion and a second contact portion in the direction away from the second hinge edge. The first contact portion protrudes from the plate portion and contacts the pressing plate, and the second contact portion protrudes from the plate portion and contacts the resilient key.

[0005] According to the switch provided by the present utility model, by providing a transmission plate member, the pressing plate member only needs to rotate a small amplitude to press the return key. That is to say, by providing a transmission plate member, the stroke of the pressing plate member required to press the return key is reduced, which is beneficial to the thinning of the switch product. In addition, since the transmission plate member has a first contact portion protruding from the plate portion and contacting the pressing plate member, the contact between the pressing plate member and the transmission plate member can be ensured, thereby improving the reliability and stability of the force transmission between the pressing plate member and the transmission plate member. Similarly, since the transmission plate member has a second contact portion protruding from the plate portion and contacting the return key, the contact between the transmission plate member and the return key can be ensured, thereby improving the reliability and stability of the force transmission between the transmission plate member and the return key. Moreover, by providing a first contact portion protruding from the plate portion on the transmission plate member, the structure provided on the pressing plate member for contacting the transmission plate member can be omitted or reduced, so that the weight of the pressing plate member can be reduced, making it easier for the pressing plate member to reset when the return key rebounds, and also alleviating to a certain extent the problem of the strength reduction of the pressing plate member caused by local stress.

[0006] In the switch of the optional technical solution of the present utility model, the first contact portion has a length extending in a direction parallel to the first hinge edge.

[0007] According to the above preferred technical solution, the force applied at each position on the pressing plate member can be reliably transmitted to the transmission plate member. Moreover, the contact between the pressing plate member and the transmission plate is more stable, and the feel when the user presses the pressing plate member is better.

[0008] In the switch of the optional technical solution of the present utility model, the first contact portion contacts the pressing plate member in the form of multi-point contact or line contact.

[0009] According to the above preferred technical solution, the frictional resistance between the first contact portion and the pressing plate member is reduced, and the feel when the user presses the pressing plate member is better.

[0010] In the switch of the optional technical solution of the present utility model, the first contact portion has a curved surface facing the pressing plate member.

[0011] According to the above preferred technical solution, the first contact portion contacts the pressing plate member through the curved surface, which can reduce the frictional resistance between the first contact portion and the pressing plate member, and the feel when the user presses the pressing plate member is better.

[0012] In the switch of the optional technical solution of the present utility model, a plurality of convex blocks arranged in a direction parallel to the first hinge edge are provided on the side of the pressing plate member close to the transmission plate member. The convex blocks have a length extending in a direction intersecting the first hinge edge, the convex blocks have a curved surface facing the transmission plate member, and the first contact portion contacts the convex blocks.

[0013] According to the above preferred technical solution, the curved surface of the first contact part contacts the curved surface of the bump, and the frictional resistance between the first contact part and the pressing plate is very small, providing a better feel for the user when pressing the pressing plate. Moreover, since the bump has a length extending in the direction intersecting the first hinge edge, it is easier for the bump to contact the first contact part, that is, it avoids the problem of contact failure caused by manufacturing tolerances and other reasons.

[0014] In the switch of the optional technical solution of the present utility model, the second contact part is arranged at the middle of the side of the plate part far from the second hinge edge. The plate part has two side parts in the direction parallel to the second hinge edge, and the two side parts are inclined and transitioned to the second contact part in the direction away from the second hinge edge.

[0015] According to the above preferred technical solution, since the two side parts of the plate part are inclined and transitioned to the second contact part in the direction away from the second hinge edge, the force on the second contact part is more balanced and it is not easily damaged or deformed.

[0016] In the switch of the optional technical solution of the present utility model, in the first direction, the plate part is inclined such that the side with the second contact part is closer to the pressing plate than the side with the second hinge edge.

[0017] According to the above preferred technical solution, when pressing the pressing plate, the side of the pressing plate with the second contact part moves downward without interfering with the second hinge edge of the transmission plate. At the same time, the first contact part can reliably contact the pressing plate with a smaller protruding degree, which is beneficial to reducing the manufacturing cost of the transmission plate.

[0018] In the switch of the optional technical solution of the present utility model, the distance between the contact part B of the first contact part and the pressing plate and the axis L2 of the second hinge edge is D1, and the distance between the contact part C of the second contact part and the return key and the axis L2 of the second hinge edge is D2. D1 and D2 satisfy the mathematical relationship: 0.7 < D1 / D2 < 0.9. The distance between the contact part B of the first contact part and the pressing plate and the axis L1 of the first hinge edge is D3, and the distance between the edge A of the pressing plate far from the first hinge edge and the axis L1 of the first hinge edge is D4. D3 and D4 satisfy the mathematical relationship: 0.6 < D3 / D4 < 0.8.

[0019] According to the above preferred technical solution, the pressing of the return key can be achieved by moving a smaller stroke, which is beneficial to the thin design of the switch and provides a better feel and feedback.

[0020] Wherein, the second hinge edge refers to the edge part on one side of the transmission plate for hinge connection. The axis L2 of the second hinge edge refers to the axis around which the transmission plate rotates. Similarly, the first hinge edge refers to the edge part on one side of the pressing plate for hinge connection. The axis L1 of the first hinge edge refers to the axis around which the pressing plate rotates.

[0021] Wherein, when the contact part B is a contact point, D1 is the distance between the point and the rotating shaft L2; when the contact part B is a contact line, D1 is the distance between the line and the rotating shaft L2; when the contact part B is a contact surface, D1 is the distance between the geometric center point of the contact surface and the rotating shaft L2. Similarly, when the contact part C is a contact point, D2 is the distance between the point and the rotating shaft L2; when the contact part C is a contact line, D2 is the distance between the line and the rotating shaft L2; when the contact part C is a contact surface, D2 is the distance between the geometric center point of the contact surface and the rotating shaft L2.

[0022] In the switch of the optional technical solution of the present utility model, the maximum moving stroke of the pressing plate in the first direction is less than the maximum stroke that the resilient key can be pressed.

[0023] According to the above preferred technical solution, the resilient key can be pressed by moving a smaller stroke, which is beneficial to the thin design of the switch.

[0024] In the switch of the optional technical solution of the present utility model, the switch further includes a frame, and the frame includes a decorative plate part and a mounting part arranged side by side. The mounting part has a first fixing part, a recessed part recessed in the direction of the resilient key, and a second fixing part. The first fixing part is arranged on the side of the mounting part away from the decorative plate part, and the first hinge side is connected to the first fixing part. The recessed part is separated from the first fixing part and is adjacent to the decorative plate part, and a through hole is provided in the recessed part, and the resilient key passes through the through hole. The second fixing part is arranged on the side of the mounting part close to the decorative plate part and is located in the recessed part, and the second hinge side is connected to the second fixing part.

[0025] According to the above preferred technical solution, by providing the decorative plate part, the side part of the switch is made more beautiful and dust is not easily entered. By providing the recessed part, an installation space can be provided for the transmission plate part without increasing the overall thickness of the frame. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the switch provided in this embodiment in the assembled state;

[0027] Figure 2 It is an exploded view of the switch provided in this embodiment;

[0028] Figure 3 It is a schematic structural diagram of the transmission plate part of the switch provided in this embodiment;

[0029] Figure 4 It is a partial cross-sectional view of the switch provided in this embodiment;

[0030] Figure 5 It is a cross-sectional view of the switch provided in this embodiment;

[0031] Figure 6 Structural schematic diagrams of the pressing plate member, transmission plate member and resilient key of the switch provided in this embodiment;

[0032] Figure 7 Schematic diagram of the state when the switch provided in this embodiment is operated.

[0033] Reference numerals: switch 100, resilient key 1, switch function module 101, pressing plate member 2, first hinge edge 21, convex block 22, transmission plate member 3, plate portion 31, second hinge edge 311, first contact portion 33, second contact portion 34, frame 4, decorative plate portion 41, mounting portion 42, first fixing portion 421, second fixing portion 422, recessed portion 423, through hole 4231. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] <Term>

[0036] The z-axis direction refers to the first direction in which the resilient key 1 is pressed / rebounded;

[0037] The y-axis direction refers to the direction parallel to the first hinge edge 21 / second hinge edge 22;

[0038] The x-axis direction refers to the direction perpendicular to the z-axis and the y-axis;

[0039] "Up" refers to the direction close to the pressing plate member 2 in the z-axis direction;

[0040] "Down" refers to the direction away from the pressing plate member 2 in the z-axis direction.

[0041] Figure 1 Shows a schematic diagram of the switch 100 provided in this embodiment in the assembled state. As Figure 1 shown, the switch 100 includes a switch function module 101, a frame 4 and a pressing plate member 2. The frame 4 includes a decorative plate portion 41 and a mounting portion 42 arranged side by side. The pressing plate member 2 is installed on the mounting portion 42, and the surface of the pressing plate member 2 is substantially flush with the surface of the decorative plate portion 41, thereby presenting a thin product appearance.

[0042] Figure 2 Shows an exploded view of the switch 100 provided in this embodiment. As Figure 2As shown, the switch 100 includes a switch function module 101, a frame 4, a pressing plate member 2, and a transmission plate member 3.

[0043] The upper part of the switch function module 101 has a resilient key 1, which is configured to be pressed / rebounded in the first direction, i.e., the z-axis direction. The resilient key 1 refers to a key that, after being pressed, can automatically rebound to its initial position under the action of a spring or other mechanical device inside the switch function module 101.

[0044] The frame 4 is installed above the switch function module 101. When the frame 4 is assembled with the switch function module 101, the resilient key 1 can protrude from the through hole 4231 on the frame 4. The frame 4 includes a mounting portion 42, and the mounting portion 42 has a first fixing portion 421, a recessed portion 423, and a second fixing portion 422. The first fixing portion 421 is provided on the side of the mounting portion 42 away from the decorative plate portion 41, and the pressing plate member 2 is connected to the first fixing portion 421. The recessed portion 423 that is concave downward in the direction of the resilient key 1 is arranged away from the first fixing portion 421, and the recessed portion 423 is adjacent to the decorative plate portion 41. The through hole 4231 is provided in the recessed portion 423, and the resilient key 1 passes through the through hole 4231. The second fixing portion 422 is provided on the side of the mounting portion 42 close to the decorative plate portion 41 and is located within the recessed portion 423. In other words, the first fixing portion 421 and the second fixing portion 422 are disposed on both sides of the mounting portion 42 in the x-axis direction and are offset in the z-axis direction. The transmission plate member 3 is connected to the second fixing portion 422.

[0045] The pressing plate member 2 is arranged facing the resilient key 1 and has a first hinged edge 21 in the y-axis direction. The first hinged edge 21 is connected to the first fixing portion 421, so that the pressing plate member 2 can rotate about an axis parallel to the y-axis.

[0046] The transmission plate member 3 is arranged between the resilient key 1 and the pressing plate member 2 and is used to transmit the force applied to the pressing plate member 2 to the resilient key 1. The transmission plate member 3 has a plate portion 31, and a second hinged edge 311 in the y-axis direction is provided on the side of the plate portion 31 away from the first hinged edge 21. The second hinged edge 311 is connected to the second fixing portion 422, so that the transmission plate member 3 can rotate about an axis parallel to the y-axis. The first contact portion 33 and the second contact portion 34 are sequentially arranged on the transmission plate member 3 in the direction away from the second hinged edge 311. The first contact portion 33 protrudes from the plate portion 31 and contacts the pressing plate member 2, and the second contact portion 34 protrudes from the plate portion 31 and contacts the resilient key 1. Thus, when an external force is applied to the pressing plate member 2 to make it rotate, the first contact portion 33 is stressed and the transmission plate member 3 rotates. When the transmission plate member 3 rotates, the second contact portion 34 presses the resilient key 1.

[0047] By providing the transmission plate member 3, pressing the return key 1 can be achieved by rotating the plate member 2 only by a small amplitude. That is to say, by providing the transmission plate member 3, the stroke of the plate member 2 required to press the return key 1 is reduced, which is beneficial to the thinning of the switch 100. In addition, since the transmission plate member 3 has a first contact portion 33 protruding from the plate portion 31 and contacting the plate member 2, the contact between the plate member 2 and the transmission plate member 3 can be ensured, thereby improving the reliability and stability of the force transmission between the plate member 2 and the transmission plate member 3. Similarly, since the transmission plate member 3 has a second contact portion 34 protruding from the plate portion 31 and contacting the return key 1, the contact between the transmission plate member 3 and the return key 1 can be ensured, thereby improving the reliability and stability of the force transmission between the transmission plate member 3 and the return key 1. Moreover, by providing the first contact portion 33 protruding from the plate portion 31 on the transmission plate member 3, the structure provided on the plate member 2 for contacting the transmission plate member 3 can be omitted or reduced, so that the weight of the plate member 2 can be reduced, making it easier for the plate member 2 to reset when the return key 1 rebounds, and also alleviating to a certain extent the problem of the strength reduction of the plate member 2 caused by local stress.

[0048] Although in the illustrated embodiment, the specific structure of the frame 4 is shown, the present invention is not limited thereto. As long as the plate member 2 and the transmission plate member 3 can be connected and fixed, the specific structure of the frame 4 can be selected according to actual needs.

[0049] Figure 3 The structural schematic diagram of the transmission plate member 3 of the switch 100 provided in this embodiment is shown.

[0050] As Figure 3 shown, the transmission plate member 3 includes a plate portion 31 having a second hinge edge 311, a first contact portion 33 protruding upward from the plate portion 31, and a second contact portion 34 protruding downward from the plate portion 31. The first contact portion 33 has a length extending in the direction parallel to the first hinge edge 21, that is, the y-axis direction. In this way, the force applied at each position on the plate member 2 can be reliably transmitted to the transmission plate member 3. Moreover, the contact between the plate member 2 and the transmission plate member 3 is more stable, and the feel is better when the user presses the plate member 2.

[0051] Although in the illustrated embodiment, the first contact portion 33 continuously extends in the y-axis direction to form a columnar structure, the present invention is not limited thereto. In other embodiments, the first contact portion 33 may also non-continuously extend in the y-axis direction, that is, be composed of a plurality of parts arranged in the y-axis direction.

[0052] As Figure 3As shown, the first contact portion 33 is a geometric body surrounded by two semi-circular end faces of equal size and parallel to each other in the y-axis direction, and a curved surface connecting the two semi-circular end faces. The curved surface of the first contact portion 33 faces the pressing plate member 2, and the first contact portion 33 contacts the pressing plate member 2 through this curved surface. In this way, there is a smaller contact portion between the first contact portion 33 and the pressing plate member 2, so that the frictional resistance between the first contact portion 33 and the pressing plate member 2 can be reduced, and the user feels better when pressing the pressing plate member 2.

[0053] Although in the illustrated embodiment, the first contact portion 33 is a columnar structure and the two end faces in the y-axis direction are semi-circular end faces, the present invention is not limited thereto. It can be understood that as long as the first contact portion 33 has a curved surface facing the pressing plate member 2, the frictional resistance between the first contact portion 33 and the pressing plate member 2 can be reduced.

[0054] Continue to refer to Figure 3 , the second contact portion 34 is provided in the middle of the side of the plate portion 31 away from the second hinge edge 311. The plate portion 31 has two side portions in the direction parallel to the second hinge edge 311, that is, the y-axis direction, and these two side portions are inclined and transition to the second contact portion 34 in the direction away from the second hinge edge 311. Specifically, the side portion of the plate portion 31 away from the second hinge edge 311 is in a V shape, and the second contact portion 34 is provided in the middle of this V-shaped side portion. In this way, the force on the second contact portion 34 is more balanced and it is not easy to be damaged and deformed.

[0055] Figure 4 Shows a partial cross-sectional view of the switch 100 provided in this embodiment.

[0056] As Figure 4 shown, on the side of the pressing plate member 2 close to the transmission plate member 3, a plurality of bumps 22 arranged in the direction parallel to the first hinge edge 21, that is, the y-axis direction, are provided. The bumps 22 have a length extending in the direction perpendicular to the first hinge edge 21, that is, the z-axis direction, and have a curved surface facing the transmission plate member 3. The curved surface of the first contact portion 33 contacts the curved surface of the bumps 22. That is to say, the first contact portion 33 contacts the pressing plate member 2 in the form of multi-point contact, and the frictional resistance between the first contact portion 33 and the pressing plate member 2 is very small, and the user feels better when pressing the pressing plate member 2.

[0057] In some other embodiments, the first contact portion 33 has a curved surface facing the pressing plate member 2, the pressing plate member 2 is not provided with bumps 22, and the curved surface of the first contact portion 33 is in line contact with the lower surface of the pressing plate member 2.

[0058] In some other embodiments, the extending direction of the bumps 22 forms an angle with both the y-axis and the x-axis.

[0059] Figure 5A cross-sectional view of the switch 100 provided in this embodiment is shown.

[0060] As Figure 5 shown, in the first direction, that is, the z-axis direction, the plate portion 31 is inclined such that the side having the second contact portion 34 is closer to the pressing plate member 2 than the side having the second hinge edge 311. In this way, when the pressing plate member 2 is pressed, the side of the pressing plate member 2 away from the first hinge edge 21 moves downward without interfering with the second hinge edge 311 of the transmission plate member 3. At the same time, the first contact portion 33 does not need to protrude too much to reliably contact the pressing plate member 2, which is beneficial to reducing the manufacturing cost of the transmission plate member 3.

[0061] Figure 6 A schematic structural view of the pressing plate member 2, the transmission plate member 3, and the return spring key 1 of the switch 100 provided in this embodiment is shown. Figure 7 A schematic view of the state when the switch 100 provided in this embodiment is operated is shown.

[0062] As Figure 6 shown, the distance between the contact portion B of the first contact portion 33 and the pressing plate member 2 and the rotation axis L2 of the second hinge edge 311 is D1, and the distance between the contact portion C of the second contact portion 34 and the return spring key 1 and the rotation axis L2 of the second hinge edge 311 is D2. Among them, D1 is 32 mm, D2 is 40 mm, and D1 / D2 is 0.8. The distance between the contact portion B of the first contact portion 33 and the pressing plate member 2 and the rotation axis L1 of the first hinge edge 21 is D3, and the distance between the edge A of the pressing plate member 2 away from the first hinge edge 21 and the rotation axis L1 of the first hinge edge 21 is D4. Among them, D3 is 40 mm, D4 is 55 mm, and D3 / D4 is approximately 0.72.

[0063] As Figure 7 shown, when the switch 100 is operated, that is, when the pressing plate member 2 is pressed downward, the edge A moves downward by 1.9 mm in the first direction (z-axis direction), driving the transmission plate member 3 to press the return spring key 1, so that the contact portion C moves downward by 2.2 mm in the first direction (z-axis direction).

[0064] The forces actually measured at the edge A, the contact portion B, and the contact portion C are 4.8 N at A, 6.5 N at B, and 3.3 N at C, respectively.

[0065] In this embodiment, the maximum moving stroke of the pressing plate member 2 of the switch 100 in the first direction (z-axis direction) is less than the maximum stroke that the return spring key 1 can be pressed, that is, the pressing plate member 2 can press the return spring key 1 by moving a smaller stroke, which is beneficial to the thin design of the switch 100. And the force required at the edge A is appropriate, which can provide a better feel and feedback.

[0066] It can be understood that the numerical values in the above text are only a specific example and do not constitute a limitation to the present utility model. As long as D2 satisfies the mathematical relationship: 0.7 < D1 / D2 < 0.9, and D3, D4 satisfy the mathematical relationship: 0.6 < D3 / D4 < 0.8, the pressing of the rebound key 1 can be achieved by moving a smaller stroke, which is beneficial to the thin design of the switch 100 and provides a better feel and feedback.

[0067] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A switch, characterized in that, Comprising: A resilient key configured to be pressed / rebounded in a first direction; A pressing plate member disposed facing the resilient key, the pressing plate member having a first hinge edge perpendicular to the first direction; A transmission plate member disposed between the resilient key and the pressing plate member, the transmission plate member having a plate portion, and a second hinge edge parallel to the first hinge edge is provided on a side of the plate portion away from the first hinge edge. The transmission plate member is sequentially provided with a first contact portion and a second contact portion in a direction away from the second hinge edge. The first contact portion protrudes from the plate portion and contacts the pressing plate member, and the second contact portion protrudes from the plate portion and contacts the resilient key.

2. The switch according to claim 1, characterized in that, The first contact portion has a length extending in a direction parallel to the first hinge edge.

3. The switch according to claim 2, characterized in that, The first contact portion contacts the pressing plate member in a form of multi-point contact or line contact.

4. The switch according to claim 3, characterized in that, The first contact portion has a curved surface facing the pressing plate member.

5. The switch according to claim 4, characterized in that, On a side of the pressing plate member close to the transmission plate member, a plurality of protrusions arranged in a direction parallel to the first hinge edge are provided. The protrusions have a length extending in a direction intersecting the first hinge edge, and the protrusions have a curved surface facing the transmission plate member. The first contact portion contacts the protrusions.

6. The switch according to claim 1, characterized in that, The second contact portion is provided in the middle of a side of the plate portion away from the second hinge edge, The plate portion has two side portions in a direction parallel to the second hinge edge, and the two side portions are inclined and transition to the second contact portion in a direction away from the second hinge edge.

7. The switch according to claim 1, characterized in that, In the first direction, the plate portion is inclined such that a side having the second contact portion is closer to the pressing plate member than a side having the second hinge edge.

8. The switch according to claim 1, characterized in that, The distance between the contact portion B of the first contact portion and the pressing plate member and the rotation axis L2 of the second hinge edge is D1, and the distance between the contact portion C of the second contact portion and the resilient key and the rotation axis L2 of the second hinge edge is D2. D1 and D2 satisfy the mathematical relationship: 0.7 < D1 / D2 < 0.9, The distance between the contact portion B of the first contact portion and the pressing plate member and the rotation axis L1 of the first hinge edge is D3, and the distance between the edge A of the pressing plate member away from the first hinge edge and the rotation axis L1 of the first hinge edge is D4. D3 and D4 satisfy the mathematical relationship: 0.6 < D3 / D4 < 0.

8.

9. The switch according to claim 1, characterized in that, The maximum moving stroke of the pressing plate member in the first direction is less than the maximum stroke that the resilient key can be pressed.

10. The switch according to any one of claims 1-9, characterized in that, It further includes a frame, and the frame includes a decorative plate portion and a mounting portion arranged side by side, The mounting portion has: A first fixing portion provided on a side of the mounting portion away from the decorative plate portion, and the first hinge edge is connected to the first fixing portion; A recessed portion recessed in the direction of the resilient key, the recessed portion is away from the first fixing portion and is adjacent to the decorative plate portion, and a through hole is provided in the recessed portion, and the resilient key passes through the through hole; A second fixing portion provided on a side of the mounting portion close to the decorative plate portion and located in the recessed portion, and the second hinge edge is connected to the second fixing portion.

Images