TWM536788U - Improved ventilation structure for keyboard button - Google Patents

Description

Key exhaust structure improvement

This creation is related to a pressing element, especially an improved button exhaust structure that can be applied to a keyboard.

According to the conventional button structure, the elastic force and the restoring force of the pressing body are generally provided through an elastic body disposed therein, so that the human body can press the key cap to deform the elastic body, and is released by the elastic body after being released. The restoring force pushes the keycap back to the initial position.

Generally, the elastic body is provided with an exhaust structure so as to discharge the air inside the air when it is pressed, and to allow external air to enter after the external force is released. However, if the exhaust structure of the elastic body is disposed between the bottom portion and the circuit board or the substrate, it is often difficult to provide a waterproof or dustproof effect. Therefore, in the past, an exhaust structure having a vertical through substrate is provided at the bottom of the button, so as to solve the foregoing problem. However, in order to cope with the trend of thinning the keyboard, the thinner substrate design will shorten the air path of the straight up and down vent holes, and the amount of air that can be accommodated is insufficient, which may easily cause the elastic body to be unable to rebound after being deformed by pressure. At the same time, the external moisture or hot air can easily enter the button structure directly, so the waterproof effect is not good.

In view of this, the creator is trying to improve and solve the above-mentioned shortcomings, and he has devoted himself to researching and cooperating with the application of theory, and finally proposed a creation that is reasonable in design and effective in improving the above-mentioned defects.

The main purpose of the present invention is to provide a button venting structure, which mainly provides a turning point on the stroke of the exhaust gas, so that not only the amount of air that can be accommodated but also the elastic body cannot be rebounded, and the elastic body can also be rebounded. Slow down the external moisture or hot air from the bottom into the inside of the button to provide better waterproof and dustproof effect.

In order to achieve the above object, the present invention provides a button venting structure, comprising a bottom plate, a circuit layer stacked on the bottom plate, a key cap disposed on the circuit layer, and a layer disposed between the circuit layer and the key cap. An elastomer; wherein an exhaust passage is offset from the inner center of the adjacent elastomer toward the outer edge of the elastomer to penetrate the circuit layer and communicate with the bottom plate. The turning point is formed by the exhaust passage being offset from the center of the adjacent elastic body toward the bottom edge thereof by the exhaust passage to achieve the above purpose.

<this creation>

10‧‧‧Under the connection

11‧‧‧ circuit layer

110‧‧‧Protective layer

111‧‧‧film circuit layer

111a‧‧‧Switch

112‧‧‧First through hole

113‧‧‧Second through hole

12‧‧‧floor

122‧‧‧ third through hole

124‧‧‧ recess

13‧‧‧Waterproof layer

130‧‧‧Air space

14‧‧‧Backlight module

141‧‧‧4th through hole

2‧‧‧Key Cap

20‧‧‧Upper link

3‧‧‧Connecting parts

31‧‧‧First link

310‧‧‧The first link

311‧‧‧ First connection

32‧‧‧Second link

320‧‧‧Second connection

321‧‧‧Second upper link

4‧‧‧ Elastomers

400‧‧‧ bottom edge

41‧‧‧Trigger

42‧‧‧Electrical contacts

P‧‧‧Exhaust passage

Figure 1 is a perspective exploded view of the present creation.

Figure 2 is a schematic cross-sectional view of the creation of the present invention.

Figure 3 is a schematic view of the exhaust gas when the creation is pressed.

Figure 4 is a schematic diagram of the response when the creation is bounced back.

In order to further disclose the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and description, and are not intended to limit the creation.

Please refer to FIG. 1 and FIG. 2 , which are respectively a perspective exploded view and a combined cross-sectional view of the present creation. The present invention provides a button venting structure, comprising a bottom plate 12, a circuit layer 11, a keycap 2, a connecting member 3 and an elastic body 4; wherein: the bottom plate 12 is used to carry the other components of the present invention. (For example, the circuit layer 11, the keycap 2, the connecting member 3, and the elastic body 4), and the bottom plate 12 is, for example, a metal plate (hard plate), and is provided with a lower engaging portion 10 that is engaged with the connecting member 3, and the lower engaging portion 10 Specifically, the second pivoting member (for example, a pivotal hook) and the second limiting member (for example, a limiting hook) may be protruded from the bottom layer 12 through the circuit layer 11 and protruded from the circuit layer 11.

The circuit layer 11 is stacked on the upper surface of the substrate 12. The circuit layer 11 includes a protective layer 110 and a thin film circuit layer 111. The thin film circuit layer 111 has circuit wiring (not shown) and a switch 111a. The protective layer 110 is disposed on the thin film circuit. Above the layer 111, a line for protecting the thin film circuit layer 111. Moreover, the protective layer 110 has a first through hole 112 corresponding to the center of the elastic body 4 to expose the switch 111a on the thin film circuit layer 111, and the aperture of the first through hole 112 is smaller than the inner diameter of the elastic body 4, so that the inner diameter of the first through hole 112 is smaller than that of the elastic body 4. The elastic body 4 can be attached to the protective layer 110. In this embodiment, the protective layer 110 is preferably a polyester film (Mylar; Mylar), a rubber sheet, a film or other suitable insulating material.

The key cap 2 is for pressing by a human hand, and is coupled to the bottom plate 12 via a connecting member 3, and the upper engaging portion 20 that is engaged with the connecting member 3 is disposed under the key cap 2. The upper connecting portion 20 may specifically include two upper pivoting members (for example, pivoting hooks) and two limiting members (for example, limit hooks), and may be integrally formed with the keycap 2 in a plastic material.

The connecting member 3 is connected between the bottom plate 12 and the key cap 2 for driving the key cap 2 to reciprocate up and down on the bottom plate 12. An elastic body 4 is disposed in the connecting member 3 to be abutted between the circuit layer 11 and the keycap 2. In more detail, the connecting member 3 is interleaved and pivoted by a first connecting rod member 31 and a second connecting rod member 32. to make. Specifically, the first link member 31 and the second link member 32 of the connecting member 3 are substantially respectively frame-shaped, and the first link member 31 is substantially fitably sleeved on the second link in the outer shape. The inner circumference of piece 32. The first link member 31 may have a first lower connecting portion 310 that is engaged with the connecting portion 10 under the bottom plate 12, and a first upper connecting portion 311 that is coupled to the connecting portion 20 of the keycap 2, and The second link member 32 can also have a second lower connecting portion 320 that is engaged with the connecting portion 10 under the bottom plate 12, and a second upper connecting portion 321 that is coupled to the connecting portion 20 of the keycap 2; The connecting member 3 drives the keycap 2 to reciprocate upward and downward, thereby enabling the human hand to press the keycap 2 to achieve the purpose of inputting the key command. In some embodiments, the connecting member 3 can also be replaced with other supporting structures having similar functions, such as a V-shaped, A-shaped or two-parallel connecting rod structure, which is not limited.

In addition, the bottom of the elastomer 4 of the present invention has an annular bottom edge 400, and the bottom edge 400 of the elastic body 4 is closely adhered to the protective layer 110 of the circuit layer 11. That is to say, the bottom edge 400 of the elastic body 4 and the protective layer 110 are completely flattened along the entire circumference without voids, so as to achieve dustproof and waterproof requirements. In addition, the elastic body 4 further includes a triggering portion 41 and a conductive contact 42 disposed at an end of the triggering portion 41. When the triggering portion 41 is pressed from the elastic body 4, the conductive contact 42 at the end of the triggering portion 41 can trigger the thin film circuit. Switch 111a on layer 111 to generate an electronic signal.

Referring to FIG. 2 to FIG. 4 together, the present invention mainly applies to the circuit layer 11 and the bottom plate 12 through an exhaust passage P, which is externally biased from the inner center of the adjacent elastic body 4 to the elastic body 4. Moving through the circuit layer 11 and communicating to the bottom plate 12, when the elastic body 4 is deformed by being pressed by the keycap 2, it is required to be exhausted; and at the same time, when the keycap 2 is to be restored, external air is supplied to enter. The elastic body 4 springs the keycap 2 back to the initial position. As shown in FIG. 2, the circuit layer 11 is provided with a first through hole 112 adjacent to the center of the elastic body 4 on the protective layer 110, and a first through hole 112 is connected to the thin film circuit layer 111. And facing the second through hole 113 offset from the outer edge of the elastic body 4, so the first through hole 112 and the second through hole 113 is arranged and connected in a partially overlapping manner, and the bottom plate 12 is provided with a third through hole 122 overlapping the second through hole 113, thereby constituting the exhaust passage P.

Therefore, the composition of the above-mentioned structure can be obtained.

According to this, as shown in FIG. 3 and FIG. 4, when the keycap 2 is pressed, the elastic body 4 is deformed by being pressed down by the keycap 2, and the air inside thereof can be discharged from the exhaust passage P; When the pressure of the keycap 2 is released, the elastic body 4 can supply external air into the interior through the exhaust passage P to return the keycap 2 to the initial position. Therefore, since the exhaust passage P is offset from the inner center of the elastic body 4 toward the outer edge of the elastic body 4 to penetrate the circuit layer 11 and communicate with the bottom plate 12, it is not discharged downward in a straight line, so that the discharge can be increased. The stroke of the gas and the amount of exhaust gas avoid problems such as the adsorption of the elastic body 4 to the bottom plate 12 due to the inability to rebound after being deformed by the pressure, and at the same time, the exhaust passage P has a turning point in the stroke (because of the proximity The center of the elastic body 4 is further offset toward the outer edge of the elastic body 4 to form a turning point. Therefore, the external moisture or hot air is not easily directly entered into the interior of the button from the bottom of the bottom plate 12, thereby affecting the conductive contact 42 and the switch 111a inside the button. Turn-on triggering, therefore, the improved button venting structure of the present invention provides better waterproofing than conventional ones.

In addition, as shown in FIG. 2, in order to increase the amount of gas that can be accommodated in the exhaust passage P, the bottom plate 12 may further be recessed on the side overlapping the circuit layer 11 and the exhaust passage. P is a laterally connected recess 124 that is formed on the bottom plate 12 by a recessed manner and communicates with the third through hole 122. Further, the circuit layer 11 and the bottom plate 12 may also surround a waterproof layer 13, and the waterproof layer 13 may be composed of a UV coating and a water gel to surround the recess 124 and the exhaust passage P (or the third through hole). At the periphery of 122), the distance between the circuit layer 11 and the bottom plate 12 is increased, and a gas-filling space 130 is further formed inside the circuit layer 11, the bottom plate 12 and the waterproof layer 13 to increase the amount of gas, while providing the circuit layer 11 and the bottom plate. 12 more comprehensive dust and water proof effects.

In some embodiments, the button structure further includes a backlight module 14 disposed under the bottom plate 12, and the backlight module 14 has a fourth through hole 141 communicating with the third through hole 122 for supplying gas therefrom. The fourth through hole 141 enters or exits the exhaust passage P.

In summary, this creation is a rare new creative product, which can achieve the intended use, but solve the lack of knowledge, and because of its novelty and progress, it fully meets the requirements of new patent applications. To file an application in accordance with the Patent Law, please check and grant the patent in this case to protect the rights of the creator.

However, the above description is only a preferred and feasible embodiment of the present invention, and thus the scope of the patent of the present invention is not limited thereby, and therefore equivalent structural changes made by using the present specification and the contents of the drawings are equally included in the present invention. Within the scope of creation, he is given to Chen Ming.

11‧‧‧ circuit layer

110‧‧‧Protective layer

111‧‧‧film circuit layer

111a‧‧‧Switch

112‧‧‧First through hole

113‧‧‧Second through hole

12‧‧‧floor

122‧‧‧ third through hole

124‧‧‧ recess

13‧‧‧Waterproof layer

130‧‧‧Air space

14‧‧‧Backlight module

141‧‧‧4th through hole

2‧‧‧Key Cap

3‧‧‧Connecting parts

310‧‧‧The first link

311‧‧‧ First connection

320‧‧‧Second connection

321‧‧‧Second upper link

4‧‧‧ Elastomers

400‧‧‧ bottom edge

41‧‧‧Trigger

42‧‧‧Electrical contacts

Claims (10)

A button venting structure, comprising: a bottom plate; a circuit layer laminated on the bottom plate; a key cap disposed on the circuit layer; an elastic body disposed between the circuit layer and the key cap, and the The bottom edge of the elastomer is closely attached to the circuit layer; and an exhaust passage is offset from the inner center of the elastic body toward the outer edge of the elastic body to penetrate the circuit layer and communicate with the bottom plate. The key venting structure of claim 1, wherein the bottom edge of the elastomer is in a ring shape. The key venting structure of claim 1, wherein the elastic body comprises a triggering portion and a conductive contact disposed at an end of the triggering portion. The button venting structure of claim 3, wherein the circuit layer comprises a protective layer and a thin film circuit layer, the protective layer is disposed above the thin film circuit layer, and the thin film circuit layer has a switch, The corresponding one is located below the conductive contact. The key venting structure of claim 4, wherein the protective layer is provided with a first through hole adjacent to the center of the elastic body, and the thin film circuit layer is provided with a first through hole. And a second through hole that is offset toward the outer edge of the elastic body, and a third through hole communicating with the second through hole is disposed on the bottom plate to constitute the exhaust passage. The button venting structure of claim 5, further comprising a backlight module disposed under the bottom plate, and the backlight module includes a fourth through hole communicating with the third through hole. The key venting structure of claim 5, wherein the bottom plate is further recessed with a concave portion laterally communicating with the exhaust passage, and the concave portion is located on a side of the bottom plate overlapping the circuit layer. on. The key venting structure of claim 7, wherein the recess is formed on the bottom plate by being recessed and communicated with the third through hole. The button venting structure of claim 7, wherein the circuit layer and the bottom plate surround a waterproof layer and surround the recess and the periphery of the exhaust passage. The key venting structure of claim 9, wherein the waterproof layer is composed of a UV coating and a water gel.