TW201626416A - Pressing structure for slim type keyboard - Google Patents

Abstract

A pressing structure for slim type keyboard is composed of a circuit board and a frame. The circuit board has a plurality of triggering portions respectively touched to generate a keyboard signal. The frame is superimposed on the circuit board and formed integrally with an outer frame body, a plurality of inner frame bodies, and a plurality of key caps. The outer frame body has a plurality of receiving regions disposed corresponding to the triggering portions. Each of the key caps is respectively disposed in the receiving region corresponding to one triggering portion. The outer frame body and the key cap are connected through an inner frame body, in which each inner frame body has at least two first connection portions connected to the outer frame body and at least two second connection portion connected to the key cap. A supporting portion is disposed between each of the first and second connection portions for generating a deformation elastic force to constitute the stroke of key cap displacing to the triggering portion.

Description

Pressing structure of thin keyboard

The invention relates to a pressing structure of a thin keyboard, in particular to a keyboard pressing structure which replaces the conventional keycap linkage mechanism with the supporting structure of the inner and outer frames.

The keyboard is generally disclosed in the Chinese Patent No. 445471, No. I220213, and No. M346861. Generally, there is a key cap, a circuit board triggered by the key caps to generate a command signal, and a circuit board disposed on one side of the circuit board. a substrate, and an interlocking mechanism for connecting the keycap to the substrate at one end. In the above keyboard structure, when the keycap is displaced relative to the circuit board, the linkage mechanism is pressed to touch a circuit switch on the circuit board downward, so that the circuit switch is turned on to generate a corresponding control signal. When the keycap is unstressed toward the circuit board, the linkage mechanism provides a resilient force of the keycap, which normally pushes the keycap away from the circuit board to have a height relative to the circuit board. However, although the above keyboard structure can achieve the purpose of inputting instructions, the linkage mechanism needs to have a certain height under the implementation requirement, resulting in a certain thickness of the keyboard structure. However, looking at the current computer design needs, most of the light and thin products are the main demands. Especially for notebook computers, the ratio of the thickness of the keyboard module to the overall thickness is a major factor affecting the thickness of the notebook. Therefore, each family Manufacturers are all committed to the thin design of the keyboard structure, which can significantly reduce the thickness of the keyboard structure.

In order to overcome the above problems, another manufacturer has proposed another keyboard structure design. As disclosed in the Patent No. M434979 of the Republic of China, the button is a combination of a first support member and a second support member to form a V-shaped structure. Overcoming the problem of keyboard thickness caused by the implementation of the X-shaped structure of the conventional linkage mechanism. It is also disclosed in the Patent No. M419973 of the Republic of China, which replaces the conventional linkage mechanism by a telescopic lifting structure disposed between the keycap and the circuit board to facilitate miniaturization. Or, as disclosed in the Patent No. M426075 of the Republic of China, the first support member and the second support member disposed around the keycap are used instead of the conventional linkage mechanism to reduce the overall thickness of the keyboard structure. Although the technical solutions disclosed in the above patents can make the overall thickness thin. However, in practice, only the interlocking mechanism is implemented in another form, and the keyboard structure still has a certain thickness. In addition, the structure disclosed in the above patent also has the problem that it cannot be easily assembled.

The main object of the present invention is to solve the problem that the conventional keyboard structure cannot be specifically thinned.

To achieve the above object, the present invention provides a pressing structure for a thin keyboard comprising a circuit board and a frame. The circuit board has a plurality of triggering portions respectively triggered by a keyboard signal, and the frame is stacked on the circuit board and integrally formed with an outer frame body, a plurality of inner frame bodies and a plurality of key caps, and the outer frame body has corresponding a plurality of accommodating regions provided by the triggering portion, each of the key caps corresponding to one of the triggering portions being disposed in the accommodating region, and each inner frame between the outer frame body and the key cap a body connection, wherein each of the inner frames has at least two first connecting portions connecting the outer frame and at least two second connecting portions connecting the key caps, and each of the first connecting portions and each of the first connecting portions A connecting portion is formed between the two connecting portions to generate a deformation elastic force to constitute a displacement of the key cap to the trigger portion.

In an embodiment, the accommodating regions are arranged such that the key caps are horizontally or vertically disposed, and the frame is provided with a supporting rib between two adjacent accommodating regions.

In one embodiment, the first connecting portion is disposed on two opposite sides of the keycap, and the second connecting portion is disposed on the other opposite sides of the keycap.

In an embodiment, the width of the first connecting portion is gradually increased from the connection between the first connecting portion and the outer frame toward the supporting portion.

In an embodiment, the width of each of the second connecting portions is tapered by the connection of the second connecting portion and the supporting portion toward the keycap.

In an embodiment, each of the first connecting portions is respectively disposed corresponding to one side of the keycap, and each of the second connecting portions is respectively disposed corresponding to an end corner of the keycap.

In an embodiment, the support portion of the inner frame is shaped to correspond to the key cap.

In an embodiment, each of the first connecting portions and each of the second connecting portions are disposed at an equal height position.

In an embodiment, each of the keycaps and the circuit board has a displacement section, and the displacement section is provided with an elastic support member for assisting displacement of the keycap relative to the circuit board.

In an embodiment, each of the keyboard command portions includes a main trigger switch and a plurality of sub-trigger switches electrically connected to each other, and each of the elastic support members has a plurality of corresponding main trigger switches and the sub-trigger switches respectively. Trigger.

Through the above embodiments of the present invention, the following features are compared with the conventional keyboard: 1. The overall thickness of the keyboard can be specifically thinned. The outer frame body and the inner frame formed on the frame support each of the key caps, so that each of the key caps is disposed in the accommodating space of the frame, and is generated in each of the key caps. The reciprocating displacement eliminates the keycap linkage mechanism in the conventional keyboard structure. Second, since the key cap interlocking mechanism is omitted in the present case, the overall structure of the keyboard is simplified, and in the process of assembly, no complicated alignment procedure is required.

The detailed description and technical content of the present invention will now be described as follows:

Referring to FIG. 1 to FIG. 3-1, the pressing structure of the thin keyboard of the present invention omits the keycap linkage mechanism in the conventional keyboard structure, so that the overall thickness of the keyboard can be more specifically thinned, and the structure can be simplified. As shown in the figure, the pressing structure of the present invention is at least composed of a circuit board 1 and a frame 2, wherein the circuit board 1 has a plurality of triggering portions 11 respectively contacted to generate a keyboard signal. For example, the circuit board 1 is implemented by a multi-layer board or a single-layer board, and each of the triggering parts 11 can further be an electrode structure provided after the board 1 is planned and laid out. On the other hand, the frame 2 is stacked on the circuit board 1 and assembled and fixed with the circuit board 1. Moreover, the frame 2 of the present invention is integrally formed by mechanically processing a frame. The outer frame 21, the plurality of inner frames 22, and the plurality of key caps 23. The outer frame body 21 is further assembled with the circuit board 1 or a keyboard housing (not shown), and the outer frame body 21 has a plurality of corresponding to each of the triggering portions 11 and provides the capacity of the key cap 23 disposed therein. Each of the accommodating regions 211 can be further adjusted according to design requirements to be single. The accommodating region 211 is only corresponding to a single triggering portion 11 or a single accommodating region 211 corresponding to a plurality of the triggering regions. Part 11 is set. In an embodiment, each of the accommodating regions 211 and 212 respectively provides the key caps 23 to be horizontally or vertically disposed therein. However, the outer frame 21 is adjacent to the two accommodating regions 211, A support rib 213 is disposed between the 212s to partition each of the accommodating regions 211, 212 to limit the range of movement of each of the keycaps 23. In addition, the support rib 213 can also provide the inner frame. 22 is connected to it.

Each of the keycaps 23 of the present invention is disposed in the accommodating area 211, and is connected to the inner frame body 22 and supported by the inner frame body 22 to be located in the accommodating area 211. More specifically, each of the inner frames 22 of the present invention is only provided for one of the key caps 23, that is, each of the inner frames 22 is only used as a support for the single keycap 23. . Each of the inner frame bodies 22 has at least two first connecting portions connecting the outer frame body 21 and at least two second connecting portions 223 connecting the key caps 23, and the first connecting portion 221 and the second connecting portion A deformation elastic force is generated between the portions 223 to form a support portion 222 for the displacement of the key cap 23 to the stroke of the trigger portion 11. Further, the first connecting portion 221 is disposed on a side of the supporting portion 222 facing the outer frame 21, and the second connecting portion 223 is disposed on the supporting portion 222 facing the keycap 23 One side. Moreover, in the second aspect of the present invention, the first connecting portion 221 is disposed on two opposite sides of the keycap 23, and the second connecting portion 223 is disposed on the other opposite side of the keycap 23. In one embodiment, each of the first connecting portion 231 and each of the second connecting portions 223 are disposed in a staggered manner with the supporting portion 222, as shown in FIG. In an embodiment, the support portion 222 may be shaped to correspond to the appearance of the key cap 22, in other words, the support portion 222 may be formed along the appearance of the key cap 22, and each of the first connecting portions 221 Each of the second connecting portions 223 can be located at an equal height position, that is, the supporting portion 222 is in a horizontal state when the supported keycap 22 is not pressed.

With reference to FIG. 3-1 to FIG. 3-2, in the implementation of the pressing structure of the present invention, the frame 2 is first provided, and each of the key caps 23 on the frame 2 respectively corresponds to the circuit. Each of the trigger portions 11 on the board 1 is then superposed on the circuit board 1 to complete the assembly. However, the frame 2 of the present invention has a height such that each of the keycaps 23 and the circuit board 1 has a displacement section 3, that is, each of the keycaps 23 is unstressed. The key cap 23 is separated from the correspondingly disposed trigger portion 11 without triggering the trigger portion 11. When the keycap 23 is biased toward the triggering portion 11 by the user, the inner frame 21 is supported by the first connecting portion 221, and a force is applied to the second connecting portion 223. Pointing, the supporting portion 222 is deformed and elasticized, and the keycap 23 is displaced to the stroke of the triggering portion 11 to the triggering portion 11, and finally the triggering portion 11 is triggered to generate the keyboard signal, as shown in FIG. 2. However, when the force applied to the keycap 23 disappears, the inner frame 21 is no longer subjected to a force and is returned to the uncompressed state.

In an embodiment, the thin keyboard is further provided with an elastic support member 4 for assisting displacement of the keycap 23 relative to the circuit board 1 in the displacement section 3, and the elastic support member 4 may be a reed or An elastic sponge. Further, each of the elastic supporting members 4 is provided with a contact portion 41 corresponding to each of the triggering portions 11, and the contact portion 41 is not in contact with the triggering portion 11 when the elastic supporting member 4 is not pressed by force. When the elastic support member 4 is pressed by the key cap 23, a corresponding deformation is generated, so that the contact portion 41 contacts the trigger portion 11, and the trigger portion 11 generates the keyboard signal.

Furthermore, in order to enhance the structural strength of the present invention, in an embodiment, the frame 2 is formed in the process of forming the inner frame 22 such that the width of each of the first connecting portions 221 is determined by each of the first The connection between the connecting portion 221 and the outer frame 21 is gradually increased toward the support portion 222, as shown in FIG. On the other hand, in the process of forming each of the second connecting portions 223, the width of each of the second connecting portions 223 is connected to each of the second connecting portions 223 and the supporting portion 222. The key cap 23 is tapered in the direction. Referring to FIG. 1 , in the embodiment of FIG. 1 , each of the second connecting portions 223 of the inner frame 22 of the present invention is respectively disposed corresponding to one side of the key cap 23 , however, the present invention is not limited to the above implementation. For example, each of the second connecting portions 223 may be respectively disposed corresponding to one end corner of each of the keycaps 23, as shown in FIG. 5.

With reference to FIG. 6, in an embodiment, each of the triggering portions 11 includes a main trigger switch 111 and a plurality of sub-trigger switches 112 electrically connected to each other, and corresponding to each of the triggering portions 11 The elastic support member 4 is provided with a plurality of contact portions 41, 42 corresponding to the main trigger switch 111 and the sub-trigger switch 112, respectively. Further, the contact portion 41 corresponding to the main trigger switch 111 can be designed to have a longer length of the other contact portion 42. Thereby, it is possible to prevent the user from applying a force, and the key cap 23 is displaced in the displacement direction, and the problem of the keyboard command portion 11 cannot be surely triggered.

In summary, the pressing structure of the thin keyboard of the present invention is composed of a circuit board and a frame, and the circuit board has a plurality of triggering portions that are respectively contacted to generate a keyboard signal. The frame is stacked on the circuit board and integrally formed with an outer frame body, a plurality of inner frame bodies and a plurality of key caps, wherein the outer frame body has a plurality of accommodating regions corresponding to the triggering portions, and each of the key caps respectively corresponds to The triggering portion is disposed in the accommodating region, and is connected between the outer frame body and the key cap with each of the inner frame bodies, wherein each of the inner frame bodies has at least two connections to the outer frame body. a first connecting portion and at least two second connecting portions connected to the keycap, and a deformation elastic force is generated between each of the first connecting portions and each of the second connecting portions to constitute a keycap displacement to the trigger a support for the stroke. Thereby, the keycap linkage included in the conventional keyboard structure is omitted, so that the overall thickness of the keyboard structure can be more specifically lightened and thinned, and is no longer limited by the height of the keycap linkage.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

1‧‧‧ boards
11‧‧‧Trigger
111‧‧‧Main trigger switch
112‧‧‧Sub trigger switch
2‧‧‧Frame
21‧‧‧Outer frame
211, 212‧‧‧ accommodating area
213‧‧‧Support ribs
22‧‧‧ inner frame
221‧‧‧First Connection
222‧‧‧Support
223‧‧‧Second connection
23‧‧‧Key Cap
3‧‧‧displacement interval
4‧‧‧elastic support
41, 42‧‧‧Contacts

FIG. 1 is a schematic top view of a keyboard frame according to a first embodiment of the present invention. Fig. 2 is a schematic exploded view showing the structure of the first embodiment of the present invention. Figure 3-1 is a cross-sectional view showing the structure of the key cap of the A-A line segment of Figure 1 in the present invention. Figure 3-2 is a cross-sectional view showing the structure of the key cap of the A-A line segment of Figure 1 in the present invention. Figure 4 is a top plan view of a keyboard frame in accordance with a second embodiment of the present invention. Figure 5 is a top plan view of a keyboard frame in accordance with a third embodiment of the present invention. Figure 6 is a schematic exploded view showing the structure of a fourth embodiment of the present invention.

1‧‧‧ boards

11‧‧‧Trigger

2‧‧‧Frame

21‧‧‧Outer frame

211, 212‧‧‧ accommodating area

213‧‧‧Support ribs

22‧‧‧ inner frame

221‧‧‧First Connection

222‧‧‧Support

223‧‧‧Second connection

23‧‧‧Key Cap

4‧‧‧elastic support

Claims (11)

A pressing structure of a thin keyboard, comprising: a circuit board having a plurality of trigger portions respectively triggered to generate a keyboard signal; and a frame stacked on the circuit board and integrally formed with an outer frame body and a plurality of inner frame bodies And a plurality of key caps, wherein the outer frame body has a plurality of accommodating regions corresponding to each of the triggering portions, and each of the key caps respectively corresponds to one of the triggering portions disposed in the accommodating region, and the outer frame body Connecting with each of the inner frame bodies, wherein each of the inner frame bodies has at least two first connecting portions connecting the outer frame bodies and at least two second connecting portions connecting the key caps, and A deformation elastic force is generated between each of the first connecting portions and each of the second connecting portions to form a supporting portion of the key cap displacement to the trigger portion. The pressing structure of the thin keyboard according to claim 1, wherein the accommodating regions enable the key caps to be horizontally or vertically disposed therein, and the frame is provided with a support between two adjacent accommodating regions. rib. The pressing structure of the thin keyboard according to claim 1, wherein the first connecting portion is disposed on two opposite sides of the key cap, and the second connecting portion is disposed on the other opposite side of the key cap. . The pressing structure of the thin keyboard according to claim 1 or 3, wherein the width of the first connecting portion is gradually increased from the connecting portion of the first connecting portion and the outer frame toward the supporting portion. The pressing structure of the thin keyboard according to claim 4, wherein the width of each of the second connecting portions is tapered by the connection of the second connecting portion and the supporting portion toward the keycap. The pressing structure of the thin keyboard according to claim 1, wherein the width of each of the second connecting portions is tapered by the connection of the second connecting portion and the supporting portion toward the keycap. The pressing structure of the thin keyboard according to claim 1, wherein each of the first connecting portions is respectively disposed corresponding to one side of the keycap, and each of the second connecting portions respectively corresponds to an end corner of the keycap . The pressing structure of the thin keyboard according to claim 1, wherein the supporting portion of the inner frame is shaped to correspond to the key cap. The pressing structure of the thin keyboard according to claim 1, wherein each of the first connecting portions and each of the second connecting portions are disposed at an equal height position. The pressing structure of the thin keyboard according to claim 1, wherein each of the keycaps and the circuit board has a displacement section, and the displacement section is provided with an elastic support member for assisting displacement of the keycap relative to the circuit board. The pressing structure of the thin keyboard according to claim 10, wherein each of the keyboard command portions includes a main trigger switch electrically connected to each other and a plurality of sub trigger switches, and each of the elastic support members has a plurality of corresponding mains A trigger switch and a trigger portion of the sub trigger switch.