TWI859960B - Button noise-canceling structure with cap edge - Google Patents

Abstract

A button noise-canceling structure with a cap edge is provided. The button noise-canceling structure has a base, a pressing piece, an elastic body and an upper cover. A circuit board is arranged on the base, the pressing piece has a keycap and the cap edge surrounding the keycap. The elastic body is arranged on the circuit board and located below the keycap. The upper cover is combined with the base and has a button hole, and a buffer pad is arranged on one side of the upper cover facing to the base. The buffer pad has a through hole corresponding to the button hole and superimposed on a periphery of the button hole. The keycap protrudes the upper cover through the button hole, and the cap edge is located below the buffer pad to prevent a noise causing by the cap edge rebounded hitting the upper cover.

Description

Key noise reduction structure with brim

The present invention relates to a pressing structure, in particular to a key noise reduction structure with a cap edge mainly used for inputting numbers or operation symbols.

Nowadays, keys have been widely used in various input devices or items that need to be operated manually. And depending on the needs of different items, the keys configured may also change with continuous improvement; for example, most existing keyboards need to configure a large number of keys in an open area, so the key caps of each key are omitted to reduce the distance between the keys. In other items, such as computers or keypad phones, since the number of keys they need to configure is far less than that of keyboards, their key caps still have caps. The caps can increase the tightness between the key caps and the shell parts of the device to prevent external dust or foreign objects from invading. Therefore, this type of button with a cap brim is still necessary and is still used in many items.

However, when the key cap with a cap edge rebounds after being pressed, the cap edge, which is used to prevent the key cap from falling off, will also hit the shell and generate noise, thus affecting its operation or comfort. In addition, there are generally so-called single keys and multiple keys. Multiple keys usually have a balance bar to prevent them from being pressed unbalanced and causing problems such as skewness during operation. However, the balance bar will also hit the shell and other plastic parts during operation, causing strange noises, resulting in unnecessary noise in the overall operation, and even greatly reducing people's quality and texture of the product.

In view of this, the inventor of the present invention has conducted intensive research and applied theoretical knowledge to improve and resolve the above-mentioned deficiencies, and finally proposed an invention with a reasonable design that effectively improves the above-mentioned deficiencies.

The main purpose of the present invention is to provide a key noise reduction structure with a cap brim, which is particularly aimed at keys with a cap brim on the key cap, and both single keys and multiple keys have a noise reduction structure design; wherein, the noise when the key is struck is reduced by setting a buffer pad, and the multiple keys are provided with a buffer effect on the balance bar action to prevent abnormal noise during action.

In order to achieve the above-mentioned purpose, the present invention provides a key noise reduction structure with a cap edge, comprising a base, at least one pressing member, an elastic body, and a top cover; the base is provided with a circuit board, the pressing member has a key cap and a cap edge surrounding the key cap, the elastic body is provided on the circuit board and corresponds to the bottom of the key cap, The upper cover is combined with the base and is provided with at least one key hole, and at least one buffer pad is provided on the side of the upper cover opposite to the base. The buffer pad has a through hole corresponding to the key hole and is overlapped at the periphery of the key hole; wherein the key cap of the pressing member protrudes from the upper cover through the key hole, and the cap edge of the pressing member is located below the buffer pad. In this way, when the key cap is struck, the cap edge of the key cap can be slowed down by the buffer pad after rebounding, so as to avoid direct striking with the upper cover and making noise.

In order to achieve the above-mentioned purpose, the present invention provides a key noise reduction structure with a cap edge, comprising a base, at least one pressing member, an elastic layer, and a top cover; the base is provided with a circuit board, the pressing member has a key cap and a cap edge surrounding the key cap, the elastic layer is provided on the circuit board and includes a connecting piece, and a protruding body formed on the connecting piece. The elastic body corresponds to the bottom of the key cap, and the upper cover is combined with the base and is provided with at least one key hole; wherein the key cap of the pressing member protrudes from the upper cover through the key hole, and the cap edge of the pressing member is provided with two opposite pivoting parts and a balance bar pivoted on the pair of pivoting parts, and the connecting piece is further provided with at least one supporting part protruding from the connecting piece and supported under the balance bar. In this way, the balance bar can be provided with a buffering effect when it is actuated to prevent abnormal noise.

<This invention>

1: Base

10: Circuit board

11: Screen

2: Press the piece

2a: Single key

2b:Multiplier key

20: Keycaps

200: Pressure-bearing part

21: Hat brim

22: Joint

220: Ear

221: hinge

23:Balance bar

230: Load-bearing section

231: linkage section

232: Cardinal

3: Elastic layer

30: Connector

31: Elastic body

32: Support part

33: Anti-collision part

4: Upper cover

40:Keyhole

5: Buffer

50:Through hole

Figure 1 is a three-dimensional exploded schematic diagram of the present invention applied to a computer.

Figure 2 is a schematic diagram of the three-dimensional combination of the present invention applied to a computer.

Figure 3 is a perspective enlarged view of part A of Figure 2.

Figure 4 is a three-dimensional exploded view of the pressing element of the present invention using a multiple key as an embodiment.

Figure 5 is a three-dimensional exploded view of the upper cover and the buffer pad of the present invention from another perspective.

Figure 6 is a plan view schematic diagram of the present invention applied to a computer.

Figure 7 is a schematic diagram of the operation of the present invention (I).

Figure 8 is a schematic diagram of the operation of the present invention (II).

In order to enable the Honorable Review Committee to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the attached drawings are only provided for reference and description and are not used to limit the present invention.

Please refer to Figures 1 and 2, which are respectively a three-dimensional exploded schematic diagram and a three-dimensional assembled schematic diagram of the present invention applied to a computer. The present invention provides a key noise reduction structure with a cap edge, which can be applied to items such as computers, key-type telephones, or key structures with key caps having cap edges; the key noise reduction structure includes a base 1, at least one pressing member 2, an elastic layer 3, and an upper cover 4; wherein: the base 1 can be the lower half of the shell of an item such as a computer, and the upper cover 4 can be the upper half of the shell, so as to be combined with each other to form the shell of the item. The base 1 is provided with a circuit board 10, which is located between the base 1 and the upper cover 4 and has a circuit (not shown) for the above-mentioned pressing member 2 to be electrically connected after being pressed, and the upper cover 4 is provided with at least one key hole 40 for the pressing member 2 to be arranged thereon. In addition, the circuit board 10 can be further electrically connected to a screen 11, which can be used to display the information (such as numbers or symbols) after pressing the pressing member 2, so as to facilitate the operation of items such as computers or telephones, and the upper cover 4 can be made of transparent or light-transmitting materials at the position corresponding to the screen 11, or a bare position can be directly formed at the position of the upper cover 4 at the position corresponding to the screen 11, so that the content displayed by the screen 11 can be exposed on the upper cover 4.

Please refer to Figures 3 and 4 together. The pressing member 2 can be a double key 2a or a multiple key 2b. Both the double key 2a and the multiple key 2b have a key cap 20 and a cap edge 21 surrounding the key cap 20. The key cap 20 protrudes from the upper cover 4 through the key hole 40 from the back of the upper cover 4 (i.e., the side opposite to the base 1). The size of the cap edge 21 is larger than the size of the key hole 40 to prevent the pressing member 2 from detaching from the surface of the upper cover 4.

Please refer to FIG. 1 , the elastic layer 3 is disposed between the pressing member 2 and the circuit board 10 of the base 1 , and may include a connecting piece 30 and an elastic body 31 formed on the connecting piece 30 and in a protruding shape. The elastic body 31 corresponds to the bottom of each key cap 20 , so that when the key cap 20 is pressed, the elastic body 31 is forced to deform and conduct with the circuit on the circuit board 10 , thereby enabling operations such as inputting key corresponding instructions. Specifically, as shown in FIG. 4 , a pressing portion 200 may be provided below the key cap 20. The pressing portion 200 may be columnar and correspond to the elastic body 31, so that when the key cap 20 is pressed, the pressing portion 200 may exert a pressing force on the elastic body 31.

As shown in FIG. 5 and FIG. 6 , the present invention mainly provides at least one buffer pad 5 on the back side (the side opposite to the bottom side 1) of the upper cover 4. The buffer pad 5 can be made of a soft material such as rubber, and each buffer pad 5 has a through hole 50 corresponding to each key hole 40 so as to be overlapped at the periphery of the key hole 40 of the upper cover 4. It is further explained that when the pressing member 2 is plural, the key holes 40 on the upper cover 4 are also plural in number, and the buffer pad 5 is also plural in number and is respectively arranged at the periphery of each key hole 40. When there are multiple buffer pads 5, each buffer pad 5 can be connected to each other to form a single piece, as shown in FIG5 .

Referring to FIG. 3 and FIG. 4, in the embodiment where the pressing member 2 is a multiple key 2b, two opposite pivoting portions 22 and a balance bar 23 pivoted on the pair of pivoting portions 22 can be further provided on the cap edge 21 of the multiple key 2b; wherein each pivoting portion 22 has two pivot ears 220 spaced from each other and extending downward from the cap edge 21, and a pivot hole 221 formed between the two pivot ears 220 and cutting off the cap edge 21, and the balance bar 23 has a relatively long The force-bearing section 230 and two shorter linkage sections 231 are bent out from the two ends of the force-bearing section 230 and each has a pivot 232. The two pivots 232 are pivoted on the pivot hole 221. Thus, through the distance between the two pivot ears 220, a larger deformation amount can be provided on the one hand to facilitate the pivot 232 to be pivoted in the pivot hole 221, and on the other hand, a tight fit can be achieved to prevent the balance bar 23 from shaking and causing noise due to the gap when it is actuated.

Please refer to FIGS. 1 to 3 . With respect to the multiplier key 2 b , the present invention mainly comprises at least one supporting portion 32 protruding from the connecting piece 30 of the elastic layer 3 and corresponding to the force-bearing section 230 of the balance rod 23 , so as to support the lower portion of the force-bearing section 230 of the balance rod 23 . To further explain, the support portion 32 can be arranged in multiple configurations along the length direction of the force-bearing section 230 (i.e., as shown in Figures 1 and 3), or can be simply extended along the length direction of the force-bearing section 230 (Figure omitted); in addition, in order to prevent the balance rod 23 from being skewed due to unbalanced force, two anti-collision portions 33 adjacent to the outside of the support portion 32 can be protruded on the connecting piece 30. The two anti-collision portions 33 are lower in height than the support portion 32, which can prevent any of the linkage sections 231 of the balance rod 23 from hitting the surrounding plastic parts and generating noise due to excessive skewness of the balance rod 23.

Therefore, through the above-mentioned structural composition, the key noise reduction structure with a cap edge of the present invention can be obtained.

Accordingly, as shown in FIG. 7 , when the single key 2a is pressed, its key cap 20 will press the elastic body 31 downward; and when the multiple key 2b is pressed, its key cap 20 will also press the elastic body 31 downward, and at the same time, it will engage the balance rod 23 to average the downward force points, so that the key cap 20 of the multiple key 2b will not be skewed during the downward movement. As shown in Figure 8, when the double key 2a or the multiple key 2b is rebounded by the elastic body 31, since the back of the upper cover 4 is provided with a buffer 5 corresponding to the cap edge 21, the cap edge 21 of the double key 2a or the multiple key 2b can be buffered by the buffer 5 to avoid direct knocking with the upper cover 4 and making noise; the balance bar 23 of the multiple key 2b is supported by the supporting part 32, so the balance bar 23 can be provided with a buffering effect when it is actuated to prevent abnormal noise during actuation.

In summary, this invention can achieve the intended purpose and solve the lack of knowledge. It is also extremely novel and progressive and fully meets the requirements for invention patent application. Therefore, we have filed an application in accordance with the Patent Law. We kindly ask you to examine and approve the patent in this case to protect the rights of the inventor.

However, the above is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technologies, means and other changes made by using the contents of the present invention specification and drawings are also included in the scope of the present invention and are hereby stated.

1: Base

10: Circuit board

2a: Single key

2b: Multiplier key

20: Keycaps

21: Hat brim

220: Ear

221: hinge

230: Load-bearing section

231: linkage section

232: Cardinal

30: Connector

31: Elastic body

32: Support part

4: Upper cover

5: Buffer

Claims (7)

A key noise reduction structure with a cap edge includes: a base, provided with a circuit board; at least one pressing member, having a key cap and a cap edge surrounding the key cap; an elastic body, provided on the circuit board and corresponding to the bottom of the key cap; and an upper cover, combined with the base and provided with at least one key hole, and the upper cover is further provided with at least one buffer pad on a surface opposite to the base, and the buffer pad has a corresponding key hole. The through holes are stacked around the key hole; wherein the key cap of the pressing member protrudes from the upper cover through the key hole, and the cap edge of the pressing member is located below the buffer pad; wherein the pressing member is plural, and the key holes of the upper cover are also plural in number, and the buffer pads are plural in number and are respectively arranged around the key holes, and the buffer pads are connected as a whole to form a sheet-like body. The key noise reduction structure with a cap edge as described in claim 1, wherein the pressing member is a double key or a multiple key. As described in claim 1, the key noise reduction structure with a brim is provided on the brim with two opposite pivoting parts and a balance bar pivoted on the pair of pivoting parts, and the elastic body is protruded on a connecting plate, and at least one supporting part is protruded on the connecting plate and supported below the balance bar. As described in claim 3, the key noise reduction structure with a hat brim, wherein the connecting plate is further provided with two anti-collision parts adjacent to the outside of the supporting part, and the height of the two anti-collision parts is lower than that of the supporting part. As described in claim 3 or 4, the key noise reduction structure with a cap brim, wherein the balance bar has a longer force-bearing section and two shorter linkage sections, and the two linkage sections are bent out from the two ends of the force-bearing section and each has a hinge to be hinged on the hinged portion, and the support portion is supported below the force-bearing section. As described in claim 5, the key noise reduction structure with a cap brim, wherein the support portion is configured singly or in plural along the length direction of the force-bearing section. As described in claim 5, the key noise reduction structure with a cap brim, wherein each of the hinged parts has two hinged ears that are spaced apart from each other and extend downward from the cap brim, and a hinge hole formed between the two hinged ears and cutting off the cap brim, and the hinges of the two linkage sections are respectively hinged on the hinge holes.