Elastic sheet type key device

Abstract

The utility model discloses an elastic sheet type key device, which comprises a key cap, a springback structure, a bottom plate and an outer frame, the key cap is buckled in the outer frame, the outer frame is fixed on the bottom plate, and the outer frame, the bottom plate and the key cap together define an installation space of the springback structure; the rebounding structure comprises a top plate, two elastic supporting feet, two fins, a reset lever and a positioning piece, the two elastic supporting feet are symmetrically arranged on the two sides of the top plate, foot soles of the elastic supporting feet step on the bottom plate to eject the top plate towards the inner side of the key cap, the two fins are symmetrically arranged on the other two sides of the top plate, and the reset lever is arranged between the two fins. The number of the reset levers is two, one ends of the reset levers are connected together through the positioning piece, the other ends of the reset levers are connected with the fins respectively, and the positioning piece is fixed to the installation position of the key through the extending outer frame. Through the above mode, the key structure can be simplified, the use reliability is improved, the manufacturing process is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of computer peripherals, in particular to a spring-type key device. Background Art

[0002] Keyboards are commonly used information input devices for computers and other devices. Existing keyboards have a variety of different types of keys set according to their functions. The existing key structure generally uses a plunger structure to drive the keycap to reset after being pressed. Since a keyboard has multiple different styles of function keys, the plunger shape corresponding to each function key is different, so the entire process is very cumbersome, affecting production capacity. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a key device which can simplify the structure, improve the reliability of use and enhance the production efficiency.

[0004] The keypad is configured to have a plurality of springs that are symmetrically arranged on the top and bottom of the keypad, and a plurality of springs that are symmetrically arranged on the top and bottom of the keypad.

[0005] In a preferred embodiment of the present invention, a spherical spring is mounted at the center of the bottom plate. The spring is secured to a polyester protective film that covers the bottom plate. A pressure column is provided on the top plate facing the spring.

[0006] In a preferred embodiment of the present invention, a backlight panel is further installed on the back of the base plate.

[0007] In a preferred embodiment of the present invention, the outer frame and the bottom plate are fixed by welding.

[0008] The beneficial effects of the present invention are as follows: the present invention adopts a shrapnel structure to replace the commonly used plunger structure, cancels the traditional scissor feet, fixes the entire keycap to the shrapnel, and utilizes the rebound ability of the shrapnel to realize the automatic reset function of the key. The key device of this structure is simple in structure and has good overall balance. Compared with the traditional structure, it is more reliable and less prone to damage. Moreover, the rebound structures of keys with different functions are basically the same, which can effectively reduce the overall process and improve the production efficiency of the keyboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the assembly structure of a preferred embodiment of the utility model;

[0010] Figure 2 is a schematic diagram of the internal structure of the illustrated embodiment after assembly;

[0011] Figure 3 Schematic diagram of the spring structure in the illustrated embodiment;

[0012] Figure 4 Schematic diagram of the polyester protective film structure in the embodiment shown;

[0013] The markings of the components in the accompanying drawings are as follows:

[0014] 1. Keycap, 2. Rebound structure, 3. Frame, 4. Polyester protective film, 5. Bottom plate, 6. Backlight panel;

[0015] 201. Top plate, 202. Pressure column, 203. Elastic support foot, 204. Fin, 205. Reset lever, 206. Positioning piece

[0016] 401. Polyester protective film body, 402. Metal shrapnel. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0018] See also Figures 1 to 4 , the embodiments of the present utility model include:

[0019] A shrapnel-type key device, comprising: a keycap 1, a rebound structure 2, a bottom plate 5 and an outer frame 3, wherein the keycap 1 is buckled into the outer frame 3, and the outer frame 3 is fixed to the bottom plate 5 by welding. The outer frame 3, the bottom plate 5 and the keycap 1 together define the installation space of the rebound structure 2; the rebound structure 2 is made of a 0.15mm stainless steel sheet, including a top plate 201, an elastic support leg 203, a fin 204, a reset lever 205 and a positioning piece 206. The top plate 201, the elastic support leg 203 and the fin 204 are integrally processed from a stainless steel sheet. The keycap 1 has two elastic legs 203 symmetrically arranged on either side of the top plate 201. The soles of the elastic legs 203 step on the bottom plate to push the top plate 201 toward the keycap 1. There are two fins 204 symmetrically arranged on the other two sides of the top plate 201. There are two reset levers 205, one end of each reset lever 205 is connected together by the positioning piece 206, and the other end is connected to a fin 204 respectively. The outer frame 3 is provided with an avoidance groove, and the positioning piece 206 extends out of the outer frame 3 through the avoidance groove and is fixed to the installation position of the key. In this way, when the keycap is pressed downward, the rebound structure will deform as a whole. The elastic legs will automatically adjust the position of the legs to absorb the deformation. However, since the positioning piece 206 is fixed in position, when the force on the keycap 1 disappears, the reset lever 205 will push the elastic legs 203 back to their original position under the action of the restoring force.

[0020] The bottom plate 5 is covered with a polyester protective film 4 of the same size as the bottom plate 5. A spherical metal dome 402 is mounted at the center of the polyester protective film body 401. A pressure post 202 is provided on the top plate 201 facing the metal dome 402. When a finger presses the keycap 1, the top of the pressure post 202 contacts the metal dome 402, cushioning the finger's pressure and preventing the rebound structure 2 from deforming too much and being unable to return to its original state. Once the finger is withdrawn, the pressure post 202, together with the elastic legs 203, quickly lifts the top plate back into place.

[0021] The bottom plate 5 is a translucent plate made of plastic material, and a backlight plate 6 is installed on the back, so that light can be reflected upward through the bottom plate 5, so that the characters on the keycaps 1 can glow in the dark, thereby improving the convenience of using the keyboard.

[0022] In actual use, this embodiment, on the one hand, limits the key travel of the key through the cooperation between the metal spring piece 402 and the pressure column 202 on the top plate 201, improves the sensitivity of pressing action recognition, prevents excessive deformation of the entire rebound structure 2 due to excessive pressing, and improves the service life of the key. On the other hand, the overall structure is balanced, involving relatively few parts, reducing the number of processes on the production line, and finally only welding is needed to complete the overall assembly. Compared with the traditional key structure, the production efficiency is high and the production cost is significantly reduced.

[0023] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A spring-type button device, characterized in that: The spring-type key device comprises: a keycap, a rebound structure, a bottom plate and an outer frame, wherein the keycap is buckled into the outer frame, the outer frame is fixed to the bottom plate, and the outer frame, bottom plate and keycap together define an installation space for the rebound structure; The rebound structure includes a top plate, elastic support feet, fins, a reset lever and a positioning piece. There are two elastic support feet symmetrically arranged on both sides of the top plate. The soles of the elastic support feet step on the bottom plate to push the top plate toward the inner side of the keycap. There are two fins, symmetrically arranged on the other two sides of the top plate. There are two reset levers, one end of the two reset levers is connected together through the positioning piece, and the other end is connected to a fin respectively. An avoidance groove is provided on the outer frame, and the positioning piece extends out of the outer frame through the avoidance groove and is fixed to the installation position of the key.

2. The dome-type button device according to claim 1, characterized in that: A spring piece is also installed at the center of the bottom plate, and the spring piece is spherical.

3. The dome-type button device according to claim 2, characterized in that: The spring piece is fixed on a polyester protective film, and the polyester protective film covers the surface of the bottom plate.

4. The dome-type button device according to claim 2, wherein: The top plate is provided with a pressure column facing the spring piece.

5. The dome-type button device according to claim 1, characterized in that: A backlight panel is also installed on the back of the bottom plate.

6. The dome-type button device according to claim 1, characterized in that: The outer frame and the bottom plate are fixed by welding.

Images