TWM523955U - Key button structure - Google Patents

Description

Button structure

This creation relates to the structure of a button, and more particularly to a button structure that is simplified in structure, reduced in cost, and has a feeling of pressing a paragraph.

Currently common keyboards on the market are mainly divided into mechanical keyboards and membrane keyboards. The button structure of the membrane keyboard is made to be in contact with the contacts through the contact film member, and the film member is used as a conduction means, and the button structure is not required to be soldered and fixed on the printed circuit board (PCB), and has the advantages of low cost and low noise. It is widely used in the market, but its shortcoming is that it does not have a pressing paragraph feel. Referring to FIG. 1, a key structure 100A of a mechanical keyboard is illustrated, which includes an electronic conduction component 1A. The electronic conduction component 1A can have an excellent pressing section feel, but a high-cost electronic conduction component 1A is used as a conduction means. The button structure 100A is soldered and fixed on the printed circuit board to produce a function, and the more buttons used, the larger the printed circuit board is required, resulting in a complicated structure and high cost.

Therefore, how to improve the above problems through structural design has become an important issue that this business person wants to solve. Therefore, the creators of this case are concentrating on research and cooperating with the application of academic theory, and propose a reasonable and effective design. The creation of the above questions.

The main purpose of this creation is to provide a button structure, which has a simplified structure and reduced cost, but still retains the pressing feel and high service life of a mechanical keyboard.

To achieve the above, the present invention provides a button structure including a housing, a key shaft, an elastic member, a metal dome, and an elastic contact body. The key shaft is movably disposed through the housing, and the key shaft has a protrusion. The elastic member is disposed between the key shaft and the housing, and the upper and lower ends of the elastic member respectively abut the key shaft and the housing. The metal dome is disposed in the housing, and the metal dome can form elastic contact with the protrusion. The elastic contact body is located opposite the housing, and the elastic contact body can form an elastic abutment with the bottom of the key shaft. Wherein, when the key shaft is pressed, the key shaft moves relative to the housing, so that the metal elastic piece is pressed by the protruding portion of the key shaft to elastically deform, and the elastic contact body is bent by the bottom of the key shaft Pressing down to produce elastic deformation to touch a film member, thereby causing the film member to generate a signal.

The present invention has at least the following advantages: the present invention is provided with a metal elastic piece through the housing, which can form elastic contact with the protruding portion of the key shaft, and is disposed opposite to the housing through the elastic contact body, so that the key shaft is When the external force is pressed, the key shaft moves relative to the housing, so that the metal elastic piece can be elastically deformed by the protruding portion of the key shaft, thereby generating a clear pressing stroke feeling and sound feedback, and the elastic contact body can be driven by the key shaft. The bottom is pressed down to be elastically deformed to touch the film member, thereby causing the film member to generate a signal, so that it is not necessary to provide a high-cost electronic conduction component and soldering to the printed circuit board, thereby achieving structural simplification and cost reduction, but still It can maintain the pressing feel of a mechanical keyboard and the effect of high service life.

100A‧‧‧ button structure

1A‧‧‧Electrical conduction components

100, 100a‧‧‧ button structure

1‧‧‧shell

11‧‧‧Upper cover

111‧‧‧ first opening

12‧‧‧ Pedestal

121‧‧‧second opening

122‧‧‧Guide

2‧‧‧Key shaft

21‧‧‧Protruding

211‧‧‧First push surface

212‧‧‧Second push surface

22‧‧‧Combination Department

23‧‧‧ Guide column

3‧‧‧Flexible parts

4‧‧‧Metal shrapnel

41‧‧‧ Main body

42‧‧‧Flexible contact

421‧‧‧First contact segment

422‧‧‧Second contact

5, 5a‧‧‧Elastic contact body

51, 51a‧‧‧Apartment

52, 52a‧‧‧touching department

521, 521a‧‧‧ bracket

522, 522a‧‧‧ contacts

53, 53a‧‧ Connections

200‧‧‧film parts

Figure 1 is a schematic view of a button structure.

FIG. 2 is a perspective exploded view of the key structure of the creation.

FIG. 3 is a perspective view of the key structure of the creation.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3;

FIG. 5 is a schematic diagram of the operation of the key structure of the creation (1).

FIG. 6 is a schematic diagram of the operation of the key structure of the creation (2).

FIG. 7 is a schematic diagram of the operation of the creation button structure (3).

FIG. 8 is a schematic diagram of the operation of another button structure according to the present invention.

In order to further understand the techniques, methods and effects of this creation in order to achieve the intended purpose, please refer to the following detailed descriptions and diagrams of this creation. I believe that the purpose, characteristics and characteristics of this creation can be deepened and specific. The illustrations of the drawings are provided for simplicity and illustration only, and are not intended to limit the scope of the present invention.

Referring to FIG. 2 to FIG. 4, the present invention provides a button structure 100 for being disposed on a film member 200 (see FIG. 5). The button structure 100 includes a housing 1, a key shaft 2, an elastic member 3, a metal dome 4, and an elastic contact body 5.

The housing 1 can have an upper cover 11 and a base 12, and the upper cover 11 and the base 12 can be combined with each other. A first opening 111 is formed in the top of the upper cover 11, and a second opening 121 is formed in the bottom of the base 12. The outer dimensions of the housing 1 can be freely designed according to actual design requirements, and the embodiment is not limited.

The key shaft 2 is movably disposed through the casing 1. In detail, the top of the key shaft 2 passes through the first opening 111, the bottom of the key shaft 2 movably passes through the second opening 121, and the key shaft 2 has a convex portion 21, and the convex portion 21 can be located at the key Between the top and bottom of the shaft 2, and protruding toward the metal dome 4. More specifically, the top of the key shaft 2 may be formed with a joint portion 22 having a substantially cross shape for engaging a key cap, and a bottom portion of the key shaft 2 may be formed with a guide post 23. Furthermore, the susceptor 12 has a hollow guide groove 122 communicating with the second opening 121. The guide post 23 is movably placed in the guide groove 122 and can be selectively worn along the guide groove 122 to move up and down. A second opening 121 is exited.

The elastic member 3 is disposed between the key shaft 2 and the housing 1 , and the upper and lower ends of the elastic member 3 abut against the key shaft 2 and the housing 1 respectively. In detail, the upper end of the elastic member 3 is sleeved on the outer edge of the guide post 22, and the lower end is sleeved on the outer edge of the guide groove 122, and the key shaft 2 is opposite. The movement of the housing 1 allows the elastic member 3 to provide an elastic force. The elastic member 3 of the present embodiment is a coil spring, but is not limited thereto.

The metal dome 4 is disposed in the housing 1 and is in elastic contact with the projection 21 of the key shaft 2. In detail, the metal dome 4 has a main body portion 41 and an elastic contact portion 42 which are connected to each other. One end of the main body portion 41 is fixed to the base 12, and the other end is bent and connected to the elastic contact portion 41, and the elastic contact portion 42 is The elastic contact is formed with the projection 21, and the movement of the key shaft 2 relative to the housing 1 causes the projection 21 to press the elastic contact portion 42. In a more detailed manner, as shown in FIG. 4, the elastic contact portion 42 has a first contact portion 421 and a second contact portion 422 connected to each other, and the first contact portion 421 and the second contact portion 422 can be at an angle to each other. The first pushing surface 211 and the second pushing surface 212 are connected to each other, and the first pushing surface 211 and the second pushing surface 212 are at an angle to each other, and the first pushing The face 211 can form a normal contact with the first contact segment 421. Preferably, the elastic contact portion 42 and the protruding portion 21 are disposed correspondingly, and the shape, structure, and number of the elastic contact portion 42 and the protruding portion 21 are not limited, and may be appropriately changed as needed.

The elastic contact body 5 is located below the casing 1 and is elastically abuttable with the bottom of the key shaft 2. Preferably, the elastic contact body 5 is a rubber elastic body made of a highly elastic rubber. In the detail, the elastic contact body 5 has an abutting portion 51, a contact portion 52 and a connecting portion 53. The contact portion 52 is located between the abutting portion 51 and the connecting portion 53, and is integrally connected to the abutting portion. a portion 51 and a connecting portion 53 for abutting the guide post 23, the contact portion 52 for elastically deforming the film member 200, the connecting portion 53 for connecting the film member 200, and the film member 200 may be A common three-layer conductive film allows the contacts on the upper and lower circuits to be in contact with each other when the film member 200 is pressed.

5 to 7, in the initial state, the first pushing surface 211 of the protruding portion 21 of the key shaft 2 normally contacts the first elastic contact portion 42 of the metal dome 4 In the contact section 421, when the top of the key shaft 2 is pressed by an external force, the key shaft 2 moves downward relative to the housing 1 (as shown in FIGS. 6 and 7), so that the metal dome 4 is pushed by the projection 21 of the key shaft 2. The elastic deformation causes a clear pressing section feel and sound feedback, and the bottom of the key shaft 2 continues to move downward relative to the housing 1 to press down the abutting portion 51 of the elastic contact body 5, resulting in the contact portion 52 being generated. The film member 200 is pressed down by elastic deformation, thereby causing the film member 200 to generate a signal. When the external force disappears, the elastic force of the elastic member 3 can be used to push the key shaft 2 back to the position before the pressing (ie, as shown in FIG. 5).

In this embodiment, the contact portion 52 of the elastic contact body 5 is composed of a disc-shaped bracket 521 and a contact 522 extending downward from the bottom side of the bracket 521 to enable the contact 522 and The travel distance between the film members 200 is relatively short. In another embodiment, referring to FIG. 8, a button structure 100a has a contact portion 52a of the elastic contact body 5a formed by a bowl-shaped bracket 521a and a bottom side of the bracket 521a. The extended contact 522a is constructed to provide a relatively long travel distance between the contact 522a and the film member 200.

In summary, the present invention is provided with a metal dome 4 disposed in the housing 1 to be in elastic contact with the protruding portion 21 of the key shaft 2 and disposed opposite to the housing 1 through the elastic contact body 5, thereby When the key shaft 2 is pressed by an external force, the key shaft 2 moves relative to the housing 1, so that the metal dome 4 can be elastically deformed by the projection 21 of the key shaft 2, thereby generating a clear pressing stroke feeling and sound feedback. And the elastic contact body 5 can be elastically deformed by the bottom of the key shaft 2 to elastically deform to contact the film member 200, thereby causing the film member 200 to generate a signal, so that no high-cost electronic conduction component is required and the welding is fixed. On the printed circuit board, the structure is simplified and the cost is reduced, but the pressing feel and the long service life of the mechanical keyboard can be maintained.

The above is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the patents of the present invention. The equivalent changes and modifications made by the scope of the patent application should be within the scope of this creation.

100‧‧‧Key structure

1‧‧‧shell

11‧‧‧Upper cover

111‧‧‧ first opening

12‧‧‧ Pedestal

121‧‧‧second opening

122‧‧‧Guide

2‧‧‧Key shaft

21‧‧‧Protruding

211‧‧‧First push surface

212‧‧‧Second push surface

22‧‧‧Combination Department

23‧‧‧ Guide column

3‧‧‧Flexible parts

4‧‧‧Metal shrapnel

41‧‧‧ Main body

42‧‧‧Flexible contact

421‧‧‧First contact segment

422‧‧‧Second contact

5‧‧‧Elastic contact body

51‧‧‧Apartment

52‧‧‧Touching

521‧‧‧ bracket

522‧‧‧ contacts

53‧‧‧Connecting Department

Claims (10)

A key structure includes: a housing; a key shaft movably disposed through the housing, wherein the key shaft has a protrusion; and an elastic member disposed on the key shaft and the housing And the upper and lower ends of the elastic member respectively abut the key shaft and the housing; a metal elastic piece is disposed in the housing, and the metal elastic piece can form elastic contact with the protruding portion; and an elastic a pressing body opposite to the housing, the elastic contact body being elastically abuttable with a bottom of the key shaft; wherein when the key shaft is pressed, the key shaft moves relative to the housing, so that the The metal elastic piece is elastically deformed by being pressed by the protruding portion of the key shaft, and the elastic contact body is pressed down by the bottom of the key shaft to elastically deform to touch a film member, thereby causing the film member to generate a signal. . The key structure of claim 1, wherein the housing has an upper cover and a base combined with each other, the top of the upper cover is formed with a first opening, and the bottom of the base is formed with a second opening, the top of the key shaft is worn Through the first opening, the bottom of the key shaft is movably passed out of the second opening. The key structure of claim 2, wherein a top portion of the key shaft is formed with a joint portion for coupling a key cap, a bottom of the key shaft is formed with a guide post, and the base is formed with the same a second open communication guide groove, the guide post is movably disposed in the guide groove and is movable up and down along the guide groove to selectively pass through the second opening. The button structure of claim 3, wherein the elastic member is a coil spring, and the upper end of the elastic member is sleeved on the outer edge of the guide post, and the lower end of the elastic member is sleeved on the outer edge of the guide groove. The button structure of claim 3, wherein the metal dome has a body portion and an elastic contact portion connected to each other, the body portion is fixed at one end to the base, and the other end of the body portion is bent and connected to the elastic contact portion. And the elastic contact portion can form elastic contact with the protruding portion of the key shaft. The key structure of claim 5, wherein the elastic contact portion has a first contact segment and a second contact segment connected to each other, the first contact segment and the second contact segment being at an angle to each other, the key axis The protruding portion has a first pushing surface and a second stacking surface connected to each other, the first pushing surface and the second stacking surface are at an angle to each other, and the first pushing surface and the first contact portion Form normal contact. The button structure of claim 6, wherein the elastic contact body has an abutting portion, a contact portion and a connecting portion, and the contact portion is located between the abutting portion and the connecting portion and is integrally connected In the abutting portion and the connecting portion, the abutting portion is configured to abut the guiding post, and the pressing portion is configured to elastically deform the film member, and the connecting portion is configured to connect the film member. The button structure of claim 7, wherein the elastic contact body is a rubber elastic body. The button structure of claim 7, wherein the contact portion of the elastic contact body is formed by a disc-shaped bracket and a contact extending downward from a center of the bottom side of the bracket. The button structure of claim 7, wherein the contact portion of the elastic contact body is formed by a bowl-shaped bracket and a contact extending downward from a center of the bottom side of the bracket.