TWM614851U - Key button structure - Google Patents

Abstract

A key structure includes a support plate, a film circuit board, a key cap, and two balance bars. The supporting plate includes a plate body and two hook parts. The plate body has two overhanging sections. The film circuit board has two buffer parts, and each buffer part has a central section covering a respective overhanging section, and two elastic sections located on both sides of the central section. Each balance rod includes a main rod part connected to the keycap, and two auxiliary rod parts pivotally penetrating through the hook parts, and the auxiliary rod parts abut against the corresponding elastic sections. . When the keycap is pressed, the sub-rods push the elastic sections downward, and link the central sections to cause the overhanging section to move downwards, so as to achieve a cushioning effect and reduce the bending deformation of the elastic sections In turn, the noise generated when the keycap is pressed can be reduced.

Description

Button structure

The present invention relates to the structure of an input device, especially a key structure.

1 and 2, a key structure 1 disclosed in the Chinese Invention Patent Application Publication No. CN111710547A patent case includes a bottom plate 11, a thin film circuit board 12 disposed on the bottom plate 11, and two thin film circuit boards 12 respectively disposed on the film The buffer members 13 on the left and right sides of the circuit board 12, a key cap 14 located above the film circuit board 12, an elastic member 15 arranged between the film circuit board 12 and the key cap 14, and a connection to the bottom plate 11 The supporting member 16 between the key cap 14 and the two balance rods 17 pivotally connected to the bottom plate 11 and the key cap 14. The bottom plate 11 has a main body 111 and two protrusions 112 protruding upward in the direction of the keycap 14 from the left and right sides of the main body 111 respectively. The main body 111 has four accommodating holes 113, wherein two of the accommodating holes 113 correspond to one of the protrusions 112, and the other two of the accommodating holes 113 correspond to the other one The raised portion 112. Each protrusion 112 has two openings 114 respectively communicating with the corresponding accommodating holes 113. Each buffer member 13 has a relief hole 131 for the respective protrusion 112 to pass through, so that the buffer member 13 covers the two accommodating holes 113 corresponding to the protrusion 112. Each balance bar 17 has a main body portion 171 pivotally connected to the keycap 14, and two ends bent and extended from the main body portion 171 and respectively abutting on the buffer members 13 and passing through the openings 114部172.

When the user presses the keycap 14, the ends 172 of the balance rods 17 will push the cushioning members 13 downward, so that the cushioning members 13 will be deformed due to the force, and the cushioning members 13 The deformation is concentrated at the accommodating holes 113, which makes the amount of deformation larger. When the user loosens the keycap 14, the cushioning members 13 return to the original position, because the amount of deformation of the cushioning members 13 is relatively large. , During the recovery process, it is easy to produce a lot of noise.

Therefore, the purpose of the present invention is to provide a key structure that reduces operating noise.

Therefore, the new key structure includes a support plate, a film circuit board, a key cap, an elastic body, at least one scissor foot bracket, and two balance bars. The supporting plate includes a plate body, two hook parts protruding upward from the left and right sides of the plate body, and two holes provided on the plate body corresponding to the hook parts respectively. The plate body has two hook parts. Side sections adjacent to the outer sides of the perforations, and two overhanging sections extending from the side sections toward the respective perforations. The thin film circuit board includes a first sub-layer disposed on the board body, the first sub-layer has a main body, and two buffer portions located on the left and right sides of the main body and adjacent to the hook portions, respectively, Each buffer part has a central section covering the respective overhanging section, and two elastic sections respectively located on both sides of the central section and covering part of the perforation. The key cap is arranged above the film circuit board. The elastic body is arranged between the film circuit board and the key cap. The at least one scissor foot bracket is located between the hook parts and is pivotally connected to the board body and the key cap. The balance rods are pivotally connected between the support plate and the keycap, each balance rod includes a main rod portion pivotally connected to the keycap, and two respectively bent and extended from two opposite ends of the main rod portion The auxiliary rod portions are pivotally inserted through the hook portions, and the auxiliary rod portions on the same side of the balance rods respectively abut the elasticity of the corresponding buffer portion part.

The effect of the present invention is that the overhanging sections respectively extend from the side sections, and the overhanging sections are not connected with the hook parts. When the user presses the keycap, the balance bars The sub-rods of the sub-rods push down the elastic sections, and the elastic sections link the central sections to exert a downward pushing force on the overhanging sections, so that the overhanging sections produce a slight downward push Displacement, in this way, the effect of buffering and reducing the deformation of the buffering parts can be achieved, and the noise generated by the key structure during use can be reduced.

Before the new model is described in detail, it should be noted that the relative position terms used in the following descriptions, such as: "up", "down", "left", "right", are based on the orientation shown in each figure and normal The orientation is used as the reference, and similar components are indicated by the same number.

Referring to Figures 3, 4 and 5, a first embodiment of the key structure 2 of the present invention includes a support plate 3, a thin film circuit board 4, a key cap 5, an elastic body 6, and a scissor foot bracket 7. And two balance bars 8.

In the first embodiment, the supporting plate 3 only takes a rectangular plate as an example, and the supporting plate 3 is made of metal material, but it is not limited to this. The supporting plate 3 includes a plate body 31, two hook portions 32 respectively protruding upward from the left and right sides of the plate body 31, and two hook portions 32 disposed on the plate body 31 and respectively corresponding to the perforations of the hook portions 32 33. The plate body 31 has two side sections 311 respectively adjacent to the outer sides of the through holes 33, and two overhang sections 312 respectively extending from the side sections 311 toward the respective through holes 33. Each hook portion 32 has two limiting ribs 321 protruding from the board 31 and extending oppositely and spaced apart.

The film circuit board 4 includes a first sub-layer 41 disposed on the board body 31, a second sub-layer 42 located above the first sub-layer 41 and for the elastic body 6 to be disposed, and a second sub-layer 42 disposed on the first sub-layer 41. A third sublayer 43 between a sublayer 41 and the second sublayer 42. The first sub-layer 41 has a main body portion 411, two buffer portions 412 located on the left and right sides of the main body portion 411 and adjacent to the hook portions 32 respectively, and two buffer portions 412 spaced apart on the main body portion 411 and located in the The first through hole 413 between the buffer portions 412 is equal. Each buffer portion 412 has a central section 414 covering the respective overhanging section 312, and two elastic sections 415 respectively located on both sides of the central section 414, and the elastic sections 415 cover adjacent to the overhanging section 312 part of the perforation 33. The second sub-layer 42 has two second through holes 421 respectively communicating with the first through holes 413, and the third sub-layer 43 has two second through holes 421 communicating with the first through holes 413 and the second through holes 421. Three through holes 431.

The key cap 5 is arranged above the film circuit board 4. The elastic body 6 is disposed between the second sub-layer 42 and the key cap 5. The elastic body 6 has elasticity to support the key cap 5, and the elastic body 6 is used to transmit the pressing action of the key cap 5 The force is applied to the thin-film circuit board 4, and the thin-film circuit board 4 is compressed and transmits a pressing signal to the computer. The scissor foot bracket 7 is located between the hook portions 32, and passes through the first through holes 413, the second through holes 421, and the third through holes 431 to pivotally connect the board 31 and the The key cap 5 is used to support the key cap 5. The scissor bracket 7 is a common element in the keyboard technology field, so this specification will not further describe its structure and operation principle. In the first embodiment, the key structure 2 is based on multiple keys of the keyboard keys, such as function keys such as ENTER, SHIFT, BACKSPACE, etc., as an example, a single scissor foot bracket 7 has sufficient supporting force.

The balance rods 8 are pivotally connected between the keycap 5 and the support plate 3, and the keycap 5 is fixed on the support plate 3 to move up and down relative to the support plate 3. Each balance rod 8 includes a pivot The main rod portion 81 rotatably connected to the keycap 5 and two auxiliary rod portions 82 respectively bent and extended from opposite ends of the main rod portion 81. The auxiliary rod parts 82 of each balance rod 8 respectively have a connecting section 821 connected to the main rod part 81, and an end connected to the connecting section 821 opposite to the main rod part 81 and parallel to the main rod part 81的穿入段822. The penetrating section 822 is pivotally disposed on the respective limiting ribs 321, and the penetrating sections 822 on the same side of the balance bars 8 respectively abut against the corresponding elastic sections of the buffer portion 412 415. In the first embodiment, the balance bars 8 are made of metal materials, among which stainless steel is preferred, which can increase the structural strength.

4 and 6, when the keycap 5 is pressed, the keycap 5 links the balance bars 8 so that the balance bars 8 abut against the buffer portions 412 downward. It is worth explaining in detail that the The penetrating section 822 pushes the elastic sections 415 downward, causing the elastic sections 415 to be bent and deformed by force, and indirectly causes the central section 414 connected between the elastic sections 415 to apply to the overhanging section 312 The downward pushing force causes the overhanging section 312 to produce a slight downward displacement. In this way, a cushioning effect can be achieved, so as to reduce the overall bending deformation of the elastic sections 415 relative to the cushioning portion 412. When the keycap 5 rebounds without being pressed, the keycap 5 moves the balance rods 8 upward, and the penetrating sections 822 no longer exert downward thrust on the elastic sections 415, so that The elastic sections 415, the central section 414, and the overhanging section 312 return to an unstressed state. Because the bending deformation of the elastic segments 415 is less than the deformation of the cushioning members 13 of the prior key structure 1, the elastic segments 415 are restored from the stressed state to the unstressed state. The noise generated can be reduced.

Refer to Fig. 7, Fig. 8 and Fig. 9, which is a second embodiment of the new model. The second embodiment is similar to the first embodiment, and the main difference lies in:

1. In the second embodiment, the blank key in the keyboard is taken as an example. Therefore, the length of the keycap 5 and the balance bars 8 is relatively long, and the key structure 2 includes two scissor legs 7.

2. Each hook portion 32 does not have two limiting ribs 321 protruding from the board 31 and extending oppositely and spaced apart (see FIG. 4). Each hook portion 32 has two side posts 322 respectively extending upward from the plate body 31, and a connecting beam 323 connecting the side posts 322, and the side posts 322 and the connecting beam 323 jointly define a chute 324. The sliding grooves 324 are adjacent to the respective buffer portions 412, and the penetrating sections 822 of the balance bars 8 on the same side are pivotally inserted into the corresponding sliding grooves 324 and respectively abut against the corresponding The elastic sections 415 of the buffer portion 412.

In this way, the second embodiment can also achieve the same purpose and effect as the above-mentioned first embodiment.

In summary, the key structure 2 of the present invention extends from the side sections 311 by the overhanging sections 312, and the overhanging sections 312 are not connected to the hook portions 32. When the button is pressed When the cap 5 is applied, the overhanging sections 312 are subjected to a downward thrust to produce a slight downward displacement, so as to achieve a buffering effect, so that the bending deformation of the elastic sections 415 can be reduced, and the elastic sections 415 can be reduced The noise generated in the process of returning the force state to the unstressed state can indeed achieve the purpose of costing new models.

However, the above are only examples of the present model. When the scope of implementation of the present model cannot be limited by this, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

2: Button structure 3: Support plate 31: Board body 311: Side section 312: Overhang 32: hook part 321: limit rib 322: Side Post 323: connecting beam 324: Chute 33: Piercing 4: Thin film circuit board 41: The first sub-layer 411: main body 412: Buffer 413: first through hole 414: Central Section 415: elastic segment 42: The second sub-layer 421: second through hole 43: third sublayer 431: third through hole 5: keycap 6: Elastomer 7: Scissor foot bracket 8: balance bar 81: Main pole 82: Vice rod 821: connection section 822: piercing section

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which: Figure 1 is a three-dimensional exploded view of an existing key structure; Figure 2 is a top view of a bottom plate, a thin film circuit board, two buffers, and two balance bars of the existing key structure; Figure 3 is a three-dimensional assembly view of a first embodiment of the new key structure; Figure 4 is a perspective exploded view of the first embodiment; Figure 5 is a partial top view of the first embodiment; Figure 6 is a cross-sectional view taken along the line VI-VI in Figure 5; Figure 7 is a perspective exploded view of a second embodiment of the new key structure; Figure 8 is a partially exploded perspective view of the second embodiment; and Fig. 9 is a cross-sectional view of the second embodiment.

2: Button structure

3: Support plate

31: Board body

312: Overhang

32: hook part

321: limit rib

4: Thin film circuit board

412: Buffer

414: Central Section

415: elastic segment

5: keycap

7: Scissor foot bracket

8: balance bar

82: Vice rod

821: connection segment

822: piercing section

Claims (7)

A key structure, including: A support plate includes a plate body, two hook parts protruding upward from the left and right sides of the plate body, and two holes provided on the plate body corresponding to the hook parts, the plate body has two Side sections adjacent to the outer sides of the perforations, and two overhanging sections extending from the side sections to the respective perforations; A thin-film circuit board includes a first sub-layer disposed on the board body, the first sub-layer has a main body, and two buffer portions respectively located on the left and right sides of the main body and adjacent to the hook portions , Each buffer portion has a central section covering a respective overhanging section, and two elastic sections located on both sides of the central section and covering part of the perforation; A key cap is arranged above the film circuit board; An elastic body arranged between the film circuit board and the key cap; At least one scissor foot bracket is located between the hook parts and is pivotally connected to the board and the keycap; and Two balance rods are pivotally connected between the support plate and the keycap, each balance rod includes a main rod portion pivotally connected to the keycap, and two are respectively bent and extended from two opposite ends of the main rod portion The auxiliary rod portions are pivotally inserted through the hook portions, and the auxiliary rod portions on the same side of the balance rods respectively abut the elasticity of the corresponding buffer portion part. The button structure according to claim 1, wherein each hook portion has two stop ribs protruding from the board and extending oppositely and arranged at intervals, and the balance rods are located on the same side of the auxiliary rod parts Do not abut the elastic segments of the corresponding buffer portion, and each of the auxiliary rod portions can be pivoted through the respective limiting ribs. The button structure according to claim 2, wherein the thin film circuit board further includes a second sublayer disposed on the first sublayer and provided with the elastomer, and the first sublayer further has two intervals disposed on the first sublayer. The first through hole of the main body, the second sub-layer has two second through holes respectively communicating with the first through holes, the first through holes and the second through holes are used for the at least one scissors The foot bracket passes through to be pivotally connected to the board. The key structure according to claim 3, wherein the auxiliary rod portions of each balance rod respectively have a connecting section connected to the main rod part, and an end connected to the connecting section opposite to the main rod part and Parallel to the penetrating section of the main rod, the penetrating section pivotally penetrates the respective limiting ribs, and the penetrating sections on the same side of the balance rods respectively abut against the corresponding buffer section. Equal elastic segment. The button structure according to claim 4, wherein the thin film circuit board further includes a third sublayer disposed between the first sublayer and the second sublayer, and the third sublayer has two connected The first through holes and the third through holes of the second through holes, the first through holes, the second through holes, and the third through holes are used for the at least one scissor foot bracket to pass through It is pivotally connected to the board. The button structure according to claim 1, comprising two scissor leg brackets located between the hook portions and spaced apart, each scissor leg bracket is pivotally connected to the board and the key cap, and each hook portion has two The side pillars extending upward from the board and a connecting beam connecting the side pillars. The side pillars and the connecting beam define a chute, and the chute is adjacent to the respective buffer parts. The auxiliary rod parts on the same side of the balance rod are pivotally disposed through the corresponding sliding grooves and respectively abut against the elastic segments of the corresponding buffer part. The key structure according to claim 6, wherein the auxiliary rod portions of each balance rod respectively have a connecting section connected to the main rod part, and an end connected to the connecting section opposite to the main rod part and Parallel to the penetrating sections of the main rod part, the penetrating sections of the balance rods on the same side pivotally penetrate the corresponding sliding grooves and respectively abut the elastic sections of the corresponding buffer part.

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