TWI400734B - Switch assembly - Google Patents

Description

Button structure

The invention relates to a button structure.

The existing buttons are mostly designed in a cantilever type, that is, a cantilever structure is disposed on one side of the button, and the cantilever is generally made of an elastic material, which is fixed on the cover of the product, and the cantilever is deformed when the button is pressed. After the force of pressing the button disappears, the cantilever can provide a restoring force for the button.

The existing cantilever type buttons are generally fixed to the upper cover of the product by thermocompression or dispensing. However, the hot press-fit fixation requires special hot-pressing equipment and requires high skill for the operator. Once the key press-failure fails, the repair is difficult, and most of them will be scrapped. Dispensing fixation also has the problem of difficult repair, and the strength and durability of dispensing is limited. Once the button is loose, it will affect the normal use and function of the product. In addition, the glue is generally toxic, which is not conducive to operation and environmental protection.

In view of this, it is necessary to provide a simple assembly and easy to remove the rework button structure.

A button structure includes an upper cover, a button, a circuit board and a support block. A button opening is defined in the upper cover. One end of the button is disposed in the button opening, and the other end is adjacent to the circuit board. The circuit board is disposed between the button and the support block. The button includes a pressing portion and at least one cantilever portion connected to the side portion of the pressing portion. The pressing portion includes a pressing end, and the end of the pressing end protrudes from the button opening, the circuit board is provided with a first through hole, and the first through hole is provided with a screw. For fixing the circuit board to the upper cover, the cantilever portion is suspended between the circuit board and the upper cover above the support block by at least one support column, and the cantilever portion includes two connected to the a cantilever on the bottom side of the pressing portion and a fixing portion connected to the ends of the two cantilevers, a plurality of positioning holes are formed on the fixing portion, and a plurality of positioning posts are formed on the upper cover at positions corresponding to the positioning holes. The positioning posts are respectively disposed in the positioning holes, and one end of the support post is fixed to the fixing portion of the cantilever portion, and the other end is abutted on the supporting block through the circuit board. The fixing portion is fixed relative to the upper cover by the support post and the positioning post.

Compared with the prior art, the button structure is used to fix the button between the upper cover and the circuit board by using the support column, thereby replacing the traditional hot pressing or dispensing fixing mode, thereby improving the button. The fixed strength of the structure is simple to install, and the disassembly and repair of the button structure is convenient.

The following preferred embodiments will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , which are exploded views of the button structure 100 of the present invention. The button structure 100 includes an upper cover 10 , a button 20 , a circuit board 30 , and a support block 40 . A button opening 11 is defined in the upper cover 10. One end of the button 20 is disposed in the button opening 11 and the other end is adjacent to the circuit board 30. The circuit board 30 is disposed between the button 20 and the support block 40. The button 20 includes a pressing portion 21 and at least one The cantilever portion 22 is connected to the side of the pressing portion 21, and the cantilever portion 22 is suspended between the circuit board 30 and the upper cover 10 above the support block 40 by at least one support post 50.

The pressing portion 21 includes a pressing end 211 and a contact end 212 opposite to the pressing end 211. The end of the pressing end 211 extends from the button opening 11 to the upper cover 10, and the contact end 212 The ends are oriented toward the circuit board 30.

The cantilever portion 22 includes two cantilevers 221 connected to the bottom side of the pressing portion 21 and a fixing portion 222 connected to the ends of the two cantilevers 221 . The cantilever 221 is made of an elastic material for providing a restoring force to the pressing portion 21 , and the fixing portion 222 is fixed between the upper cover 10 and the circuit board 30 by the support post 50 .

A plurality of positioning holes 2221 are formed on the fixing portion 222. Correspondingly, a plurality of positioning posts 12 are formed at corresponding positions on the upper cover 10, and the positioning posts 12 respectively pass through the corresponding positioning holes 2221. When the fixing portion 222 is fixed, the positioning post 12 and the positioning hole 2221 are designed to limit the lateral movement of the button 20 to improve the precision of assembly. In this embodiment, the number of the positioning holes 2221 and the positioning post 12 are two.

The circuit board 30 includes a substrate 31 and a contact unit 32. The contact unit 32 is disposed on a side surface of the substrate 30 opposite to the button 20. The substrate 31 is provided with a plurality of first through holes 311 and at least one second through hole 312 corresponding to the position of the support post 50. Each of the first through holes 311 is provided with a screw 60 for Fixing the circuit board 30 on the upper cover 10, the support post 50 passing through the second through hole 312 Supported between the upper cover 10 and the support block 40.

One end of the support post 50 is fixed to the fixing portion 222 of the cantilever portion 22 , and the other end is abutted on the support block 40 through the second through hole 312 . In order to ensure the stability of the support, the number of the support columns 50 is preferably more than two. In the embodiment, the number of the support columns 50 is three, and correspondingly, the number of the second through holes 312 is also For three.

In order to further facilitate the positioning assembly between the button 20, the circuit board 30 and the support block 40, a plurality of blind holes 401 are formed on the support block 40 at positions corresponding to the support columns 50, and the support columns 50 are The ends are respectively disposed in the blind holes 401.

Of course, the support post 50 can be fixed to the support block 40 at one end, and the other end abuts the fixing portion 222 through the second through hole 312. At this time, the fixing portion 222 A plurality of blind holes similar to the blind holes 401 are formed.

The support post 50 may be integrally formed with the button 20 or the support block 40.

The button structure 100 can be applied to any electronic product, and the support block 40 can be fixedly connected inside the outer casing (not shown) of the electronic product.

FIG. 3 is a schematic view showing the assembly of the button structure 100 according to the embodiment of the present invention. When an external force presses the pressing end 211 of the button 20, the cantilever 221 is elastically deformed, and the contact end 222 touches the The contact unit 32 of the circuit board 30 further generates a control signal corresponding to the button 20, and the fixing portion 222 acts on the support post 50 and the positioning post 12 The lower portion is fixed to the upper cover 10, and when the force pressing the pressing end 211 of the button 20 disappears, the pressing portion 21 can be returned to the original position by the elastic force of the cantilever portion 221 .

The button structure is used to fix the button between the upper cover and the circuit board by using the support column, thereby replacing the traditional hot pressing or dispensing fixing manner, thereby improving the fixing strength of the button structure and The installation process is simple, and the button structure is easily disassembled and repaired.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

100‧‧‧Key structure

10‧‧‧Upper cover

11‧‧‧Key opening

12‧‧‧ Positioning column

20‧‧‧ button

21‧‧‧ Pressing Department

211‧‧‧ Pressing end

212‧‧‧Contact end

22‧‧‧Cantilever

221‧‧‧ cantilever

222‧‧‧ Fixed Department

2221‧‧‧Positioning holes

30‧‧‧ boards

31‧‧‧Substrate

311‧‧‧ first through hole

312‧‧‧Second through hole

32‧‧‧Contact unit

40‧‧‧Support block

401‧‧‧Blind hole

50‧‧‧Support column

60‧‧‧ screws

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded view of the key structure of the present invention.

Figure 2 is an exploded view of another embodiment of the key structure of Figure 1 of the present invention.

3 is a schematic view showing the assembly of the button structure of FIG. 1 of the present invention.

100‧‧‧Key structure

10‧‧‧Upper cover

11‧‧‧Key opening

20‧‧‧ button

21‧‧‧ Pressing Department

211‧‧‧ Pressing end

22‧‧‧Cantilever

221‧‧‧ cantilever

222‧‧‧ Fixed Department

2221‧‧‧Positioning holes

30‧‧‧ boards

31‧‧‧Substrate

311‧‧‧ first through hole

312‧‧‧Second through hole

32‧‧‧Contact unit

40‧‧‧Support block

401‧‧‧Blind hole

50‧‧‧Support column

60‧‧‧ screws

Claims (7)

A button structure, comprising: an upper cover, a button, a circuit board and a support block, wherein the upper cover defines a button opening, the button is disposed at one end of the button opening, and the other end is adjacent to the circuit board The circuit board is disposed between the button and the support block, the button includes a pressing portion and at least one cantilever portion connected to the side portion of the pressing portion, the pressing portion includes a pressing end, and the pressing The end of the end protrudes from the button opening, and the improvement is that the circuit board is provided with a first through hole, and the first through hole is provided with a screw for fixing the circuit board On the upper cover, the cantilever portion is suspended between the circuit board and the upper cover above the support block by at least one support column, and the cantilever portion includes two cantilevers connected to the bottom side of the pressing portion and a a fixing portion connected to the two cantilever ends, wherein the fixing portion is formed with a plurality of positioning holes, and a plurality of positioning posts are formed on the upper cover at positions corresponding to the positioning holes, and the positioning posts are respectively correspondingly worn Placed in In the hole, one end of the support post is fixed to the fixed portion of the cantilever portion, and the other end is abutted on the support block through the circuit board, the fixing portion is in the support column and the support portion The positioning post is fixed relative to the upper cover. The button structure of claim 1, wherein the pressing portion includes a contact end opposite to the pressing end, and an end of the contact end faces the circuit board. The button structure of claim 1, wherein the cantilever is made of an elastic material. The button structure of claim 3, wherein the number of the positioning post and the positioning hole are two. The button structure of claim 1, wherein a plurality of blind holes are formed at positions corresponding to the support columns on the support block, and end portions of the support columns are respectively disposed in the blind holes. The button structure of claim 1, wherein the circuit board comprises a substrate and a contact unit, and the contact unit is disposed on a side surface of the substrate opposite to the button. The button structure of claim 6, wherein: the plurality of first through holes and at least one second through hole corresponding to the support column are opened on the substrate, and the support column passes through the The second through hole is supported between the upper cover and the support block.