Key noise reduction structure with cap edge

Abstract

The invention discloses a key noise reduction structure with a cap edge. The key noise reduction structure comprises a base, at least one pressing piece, an elastic body and an upper cover, the base is provided with a circuit board, the pressing piece is provided with a key cap and a cap edge surrounding the key cap, the elastic body is arranged on the circuit board and corresponds to the lower portion of the key cap, the upper cover is combined with the base and provided with at least one key hole, and the face, opposite to the base, of the upper cover is further provided with at least one buffering cushion. The cushion pad is provided with 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 piece protrudes out of the upper cover through the key hole, and the cap edge of the pressing piece is positioned below the buffer pad, so that the rebounded cap edge is prevented from colliding with the upper cover to generate noise.

Description

Technical Field

[0001] The invention relates to a pressing structure, in particular to a key noise reduction structure with a cap edge which is mainly used for inputting numbers or operation symbols. Background Art

[0002] 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 keycaps of each key are omitted by reducing the distance between the keys. In other items, such as computers or push-button phones, since the number of keys they need to configure is much lower than that of keyboards, there are still brims on their keycaps. The brims can increase the tightness between the keycaps and the shell components of the device to prevent external dust or foreign objects from invading. Therefore, such keys with brims are still necessary and are still being used by many items.

[0003] However, when the keycap with a cap edge rebounds after being pressed, the cap edge, which prevents the keycap from falling off, will also hit the shell part and generate noise, thus affecting the comfort of operation or use. In addition, general keys have always been divided into so-called single keys and multiple keys. Multiple keys usually have a balance bar to prevent them from being pressed unbalanced and tilting during operation. However, the balance bar will also hit the shell and other plastic parts during operation to cause abnormal noise, resulting in unnecessary noise in the overall operation, and even greatly reducing people's perception of the quality and texture of the product.

[0004] In view of this, the inventors have devoted themselves to research and applied theories to improve and solve the above-mentioned deficiencies, and finally proposed a reasonable design of the present invention that effectively improves the above-mentioned deficiencies. Summary of the invention

[0005] The main purpose of the present invention is to provide a key noise reduction structure with a cap edge, which is particularly aimed at keys with a cap edge on the keycap, and whether it is a single key or a multiple key, a noise reduction structure is designed; wherein, the noise when the key is struck is reduced by setting a buffer pad, and a buffering effect is provided for the multiple keys on the balance bar actuation to prevent abnormal noise during actuation.

[0006] 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 an upper cover; the base is provided with a circuit board, the pressing member has a keycap and a cap edge surrounding the keycap, the elastic body is provided on the circuit board and corresponds to the bottom of the keycap, and the upper cover is 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, the buffer pad has a through hole corresponding to the key hole and is superimposed on the periphery of the key hole; wherein the keycap 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 keycap is struck, the cap edge of the keycap can be slowed down by the buffer pad after the keycap rebounds, so as to avoid directly striking the upper cover and making noise.

[0007] In order to achieve the above-mentioned purpose, the present invention further provides a key noise reduction structure with a cap edge, comprising a base, at least one pressing member, an elastic layer, and an upper 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 an elastic body integrally formed on the connecting piece and in a protruding shape, the elastic body corresponds to the bottom of the key cap, and the upper cover is combined with the base and 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 pivotally provided on the pair of pivoting parts, and the connecting piece is further provided with at least one supporting part protruding 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 sound.

[0008] As a key noise reduction structure with a cap edge of the present invention, the pressing member is a single key or a multiple key.

[0009] As a key noise reduction structure with a cap edge of the present invention, the pressing parts are 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 at the periphery of each key hole.

[0010] As a key noise reduction structure with a cap edge of the present invention, the buffer pads are integrally connected to form a sheet-like body.

[0011] As a key noise reduction structure with a hat brim of the present invention, the hat brim is provided with two opposite pivot parts and a balance bar pivotally arranged on the pair of pivot parts, and the elastic body is integrally protruded on a connecting plate, and at least one supporting part is protruded on the connecting plate and supported under the balance bar.

[0012] As a key noise reduction structure with a cap edge of the present invention, the connecting piece is further provided with two anti-collision parts adjacent to the outside of the supporting part, and the two anti-collision parts are lower in height than the supporting part.

[0013] As a button noise reduction structure with a hat brim of the present invention, the balance bar has a longer force-bearing section and two shorter linkage sections, and the two linkage sections are respectively bent out from the two ends of the force-bearing section and each has a pivot portion pivotally arranged on the pair of pivotal portions, and the support portion is supported below the force-bearing section.

[0014] As a key noise reduction structure with a cap edge of the present invention, the support parts are arranged in a single or multiple configurations along the length direction of the force-bearing section.

[0015] As a key noise reduction structure with a hat brim of the present invention, each of the pivotal parts has two pivot ears that are spaced apart from each other and extend downward from the hat brim, and a pivot hole formed between the two pivot ears and cutting off the hat brim, and the pivot parts of the two linkage sections are respectively pivotally arranged on the pivot holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a three-dimensional exploded schematic diagram of the present invention applied to a computer.

[0017] Figure 2 The figure is a three-dimensional combination schematic diagram of the present invention applied to a computer.

[0018] Figure 3 Based on Figure 2 A perspective enlarged view of part A.

[0019] Figure 4 It is a three-dimensional exploded view of a pressing member of the present invention taking a multiple key as an embodiment.

[0020] Figure 5 This is a three-dimensional exploded view of the upper cover and the buffer pad from another perspective of the present invention.

[0021] Figure 6 It is a plan view schematic diagram of the present invention applied to a computer.

[0022] Figure 7 It is a schematic diagram of the operation of the present invention (I).

[0023] Figure 8 It is the action schematic diagram of the present invention (II).

[0024] In the figure: 1: base; 10: circuit board; 11: screen; 2: pressing piece; 2a: single key; 2b: multiple key; 20: keycap; 200: pressing part; 21: cap edge; 22: pivot part; 220: pivot ear; 221: pivot hole; 23: balance bar; 230: force-bearing section; 231: linkage section; 232: pivot; 3: elastic layer; 30: connecting piece; 31: elastic body; 32: supporting part; 33: anti-collision part; 4: upper cover; 40: key hole; 5: buffer pad; 50: through hole. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] See also Figure 1 and Figure 2 , respectively, are a three-dimensional exploded schematic diagram and a three-dimensional combined 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, push-button phones, 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, and they are combined 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 presented by the screen 11 can be exposed to the upper cover 4.

[0027] Please also read Figure 3 and Figure 4 As shown, the pressing member 2 can be a double key 2a or a multiple key 2b, and no matter the double key 2a or the multiple key 2b, it has a keycap 20 and a cap edge 21 surrounding the keycap 20, wherein the keycap 20 protrudes from the upper cover 4 through the key hole 40 from the back side of the upper cover 4 (i.e., the side opposite to the base 1), and the pressing member 2 can be prevented from detaching from the surface of the upper cover 4 by the size of the cap edge 21 being larger than the size of the key hole 40.

[0028] Please also refer to Figure 1 As shown, 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 integrally formed on the connecting piece 30 and in a protruding shape, wherein the elastic body 31 corresponds to the bottom of each key cap 20, so that the key cap 20 is pressed to force the elastic body 31 to deform and conduct with the circuit on the circuit board 10, thereby enabling operations such as inputting key corresponding instructions. Specifically, as Figure 4As shown, a pressing portion 200 may be disposed 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 apply a pressing force to the elastic body 31 .

[0029] like Figure 5 and Figure 6 As shown, the present invention mainly provides at least one buffer pad 5 on the back side of the cover body 4 (the side opposite to the bottom surface 1), and the buffer pad 5 can be made of soft materials such as rubber, and each buffer pad 5 has a through hole 50 corresponding to each button hole 40, so as to be overlapped at the periphery of the button hole 40 of the upper cover 4. It is further explained that: when the above-mentioned pressing members 2 are plural, the button holes 40 on the upper cover 4 are also plural in number, and the buffer pads 5 are also plural in number and are respectively arranged at the periphery of each button hole 40. When the buffer pads 5 are plural, each buffer pad 5 can be connected to each other in an integral manner to form a sheet-like body, that is, Figure 5 As shown.

[0030] Please see again Figure 3 and Figure 4 As shown, in the embodiment where the pressing member 2 is a multiple member 2b, two opposite pivoting portions 22 and a balance bar 23 pivotally mounted on the pair of pivoting portions 22 may be further provided on the brim 21 of the multiple member 2b; wherein each pivoting portion 22 has two pivot ears 220 which are spaced apart from each other and extend downward from the brim 21, and a pivot hole 221 which is formed between the two pivot ears 220 and cuts off the brim 21, and the balance bar 23 has a longer force-bearing section 230 and two shorter linkage sections 231, the two linkage sections 231 are respectively bent out from the two ends of the force-bearing section 230 and each has a pivot portion 232, and the two pivot portions 232 are pivotally arranged on the pivot hole 221; in this way, through the spacing between the two pivot ears 220, on the one hand, a larger deformation amount can be provided to facilitate the pivot portion 232 to be pivotally arranged in the pivot hole 221, and on the other hand, a tight fit can be achieved to prevent the balance bar 23 from shaking due to the gap when it is actuated. The noise caused by the noise.

[0031] Please also refer to Figures 1 to 3 As shown, for the multiple keys 2b, the present invention mainly comprises at least one supporting portion 32 protruding from the connecting sheet 30 of the elastic layer 3 corresponding to the force-bearing section 230 of the balance bar 23, so as to support the force-bearing section 230 below the balance bar 23. It is further explained that the supporting portion 32 can be arranged in a plurality along the length direction of the force-bearing section 230 (i.e., Figure 1 and Figure 3As shown), it can also be arranged to extend along the length direction of the force-bearing section 230 alone (not shown); in addition, in order to prevent the balance bar 23 from being skewed due to unbalanced force, two anti-collision parts 33 adjacent to the outside of the support part 32 can be protruded on the connecting piece 30, and the two anti-collision parts 33 are lower in protrusion height than the support part 32, which can prevent any linkage part 231 of the balance bar 23 from hitting the surrounding plastic parts and generating noise due to excessive skewness of the balance bar 23.

[0032] Therefore, by means of the above-mentioned structural composition, the key noise reduction structure with a cap edge of the present invention can be obtained.

[0033] According to this, if Figure 7 As shown, when the single key 2a is pressed, its keycap 20 will press the elastic body 31 downward; and when the multiple key 2b is pressed, its keycap 20 will also press the elastic body 31 downward, and at the same time, the balance bar 23 is connected to average the downward force points, so that the keycap 20 of the multiple key 2b will not be skewed during the downward movement. Figure 8 As shown, when the double key 2a or the multiple key 2b is rebounded by the elastic body 31, since the buffer pad 5 corresponding to the brim 21 is provided on the back of the upper cover 4, the brim 21 of the double key 2a or the multiple key 2b can be cushioned by the buffer pad 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 32 can have a buffering effect when actuated to prevent abnormal noise during actuation.

[0034] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A button noise reduction structure with a cap edge, characterized in that: include: A base having a circuit board; At least one pressing member has a key cap and a cap edge surrounding the key cap; an elastic body, disposed on the circuit board and corresponding to the bottom of the key cap; and An upper cover is combined with the base and is provided with at least one key hole, and a surface of the upper cover opposite to the base is further provided with at least one buffer pad, the buffer pad has a through hole corresponding to the key hole and is overlapped at the periphery of the key hole; 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.

2. The button noise reduction structure with a cap edge as claimed in claim 1, characterized in that: The pressing member is a single key or a multiple key.

3. The button noise reduction structure with a cap edge as claimed in claim 1, characterized in that: The pressing members are plural in number, and the key holes of the upper cover are also plural in number corresponding to the number, and the buffer pads are plural in number corresponding to the number and are respectively arranged at the periphery of each of the key holes.

4. The button noise reduction structure with a cap edge as claimed in claim 3, characterized in that: The buffer pads are connected in one piece to form a sheet-like body.

5. The button noise reduction structure with a cap edge as claimed in claim 1, characterized in that: The cap edge is provided with two opposite pivoting parts and a balance bar pivoted on the pair of pivoting parts, and the elastic body is integrally protruded on a connecting plate, and at least one supporting part is protruded on the connecting plate and supported under the balance bar.

6. The button noise reduction structure with a cap edge as claimed in claim 5, characterized in that: The connecting piece is further provided with two anti-collision parts adjacent to the outside of the supporting part, and the two anti-collision parts are lower in height than the supporting part.

7. The button noise reduction structure with a cap edge as claimed in claim 5 or 6, characterized in that: The balance bar has a longer force-bearing section and two shorter linkage sections, and the two linkage sections are respectively bent out from two ends of the force-bearing section and each has a pivot portion pivotally arranged on the pair of pivotal portions, and the support portion is supported below the force-bearing section.

8. The button noise reduction structure with a cap edge as claimed in claim 7, characterized in that: The support parts are arranged singly or in plural along the length direction of the force-bearing section.

9. The button noise reduction structure with a cap edge as claimed in claim 7, characterized in that: Each of the pivoting parts has two pivot ears which are spaced apart from each other and extend downward from the cap edge, and a pivot hole which is formed between the two pivot ears and cuts off the cap edge, and the pivot parts of the two linkage sections are respectively pivotally arranged on the pivot holes.

10. A button noise reduction structure with a cap edge, characterized in that: include: A base having a circuit board; At least one pressing member has a key cap and a cap edge surrounding the key cap; an elastic layer, disposed on the circuit board and comprising a connecting sheet, and an elastic body integrally formed on the connecting sheet and in a protruding shape, wherein the elastic body corresponds to the bottom of the key cap; and An upper cover, combined with the base and provided with at least one button hole; The keycap 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 pivotally arranged on the pair of pivoting parts, and at least one supporting part is further protruded from the connecting plate and supported under the balance bar.

11. The button noise reduction structure with a cap edge as claimed in claim 10, characterized in that: The pressing piece is a multiple key.

12. The button noise reduction structure with a cap edge as claimed in claim 10, characterized in that: The connecting piece is further provided with two anti-collision parts adjacent to the outside of the supporting part, and the two anti-collision parts are lower in height than the supporting part.

13. The button noise reduction structure with a cap edge according to claim 10 or 12, characterized in that: The balance bar has a longer force-bearing section and two shorter linkage sections, and the two linkage sections are respectively bent out from two ends of the force-bearing section and each has a pivot portion pivotally arranged on the pair of pivotal portions, and the support portion is supported below the force-bearing section.

14. The button noise reduction structure with a cap edge as claimed in claim 13, characterized in that: The support parts are arranged singly or in plural along the length direction of the force-bearing section.

15. The button noise reduction structure with a cap edge as claimed in claim 13, characterized in that: Each of the pivoting parts has two pivot ears which are spaced apart from each other and extend downward from the cap edge, and a pivot hole which is formed between the two pivot ears and cuts off the cap edge, and the pivot parts of the two linkage sections are respectively pivotally arranged on the pivot holes.

Images