CN108461342A - Keyboard with a keyboard body - Google Patents

Abstract

The invention discloses a keyboard, comprising a key, a base plate, a switch circuit board and a buffer element, wherein the key comprises a key cap and a balance bar connected to the key cap and the base plate. The base plate has a connecting structure, and the balance bar is connected to the base plate by passing through the connecting structure. The buffer element is sleeved on the connecting structure, so that the balance bar made of metal material and the base plate can be separated by the buffer element, so that the keyboard of the invention can reduce noise.

Description

keyboard

technical field

The invention relates to an input device, in particular to a keyboard with a plurality of keys.

Background technique

Common computer peripheral input devices include mouse, keyboard, and trackball. The keyboard can directly input text and symbols to the computer, so it is highly valued by users and input device manufacturers. The subject of the present invention is the keyboard.

Please refer to FIG. 1 , which is a schematic diagram of the appearance and structure of an existing keyboard. The surface of the conventional keyboard 1 has a plurality of keys 10, 10', the key 10 is classified as a general-sized key, and the key 10' is classified as a longer-sized key. Wherein, the length of the key 10 is slightly greater than its width, and the length L1 of the key 10' is much greater than its width W1. These buttons 10, 10' are for the user to press with fingers to generate corresponding signals to the computer, so that the computer can execute the pressed button function. Generally speaking, pressing the buttons 10, 10' can input symbols such as English letters , numbers or perform various functions (such as F1～F12, Delete) and so on. Wherein the existing keyboard 1 is a keyboard for a notebook computer.

Next, the internal structure of the conventional keyboard will be described. Please refer to FIGS. 1 to 3 at the same time. FIG. 2 is an exploded view of the existing keyboard, and FIG. 3 is an exploded view of the existing keyboard from another perspective. The existing keyboard 1 includes a plurality of keys 10, 10', a bottom plate 11 and a membrane switch circuit 12, and the membrane switch circuit 12 has a plurality of key switches 121 corresponding to the plurality of keys 10, 10'. The key 10, 10' includes a key cap 101, a scissors-type connection element 102, and an elastic rubber body 103. The scissors-type connection element 102 is respectively connected to the key cap 101 and the metal bottom plate 11, and it includes a first frame 1021 and a second frame 1022, The second frame 1022 is pivotally connected to the first frame 1021 so that the first frame 1021 and the second frame 1022 can swing relative to each other. In addition, the elastic rubber body 103 is disposed between the key cap 101 and the metal bottom plate 11 , and has a contact portion 1031 .

When the user touches the key cap 101 of any key 10, 10', the key cap 101 moves downward relative to the metal bottom plate 11, so that the first frame 1021 and the second frame 1022 of the scissor-type connection element 102 will be opened and closed. The state is changed to a folded state, and the downwardly moving key cap 101 will push against the elastic rubber body 103, causing the abutting portion 1031 of the elastic rubber body 103 to deform and trigger the corresponding key switch 121, so that the membrane switch The circuit 12 generates a corresponding key signal. And when the user no longer touches the buttons 10, 10', the button cap 101 will move upward relative to the metal bottom plate 11 in response to the elastic force generated by the elastic rubber body 103 recovering from the deformed state. At this time, the first frame 1021 and the The second frame 1022 will change from the folded state to the open state, and the keycap 101 will return to the position before being pressed.

In the existing keyboard 1, the structure of some keys 10' whose length L1 is much larger than the width W1 is different from that of the keys 10. ', the key cap 101 is prone to shaking, which affects the smoothness of the operation of the key 10', and even affects the user's touch feeling. Therefore, the button 10' is also provided with a special mechanism to improve its smoothness of operation. The button 10' also includes a first balance bar 104 and a second balance bar 105, and the first balance bar 104 includes a first link part 1041 and two first hook parts 1042, and the two first hook parts 1042 are respectively located on the second Two ends of a balance pole 104 . The second balance pole 105 includes a second link portion 1051 and two second hook portions 1052 , and the two second hook portions 1052 are respectively located at two ends of the second balance pole 105 . In addition, the metal bottom plate 11 includes a first connection structure 111 and a second connection structure 112 , and the first connection structure 111 and the second connection structure 112 respectively extend upward and pass through the membrane switch circuit 12 . The first connection structure 111 includes a first hook hole 1111 and a third hook hole 1112, and the second connection structure 112 includes a second hook hole 1121 and a fourth hook hole 1121 corresponding to the first hook hole 1111 and the third hook hole 1112 respectively. Hole 1122.

Wherein, the first link portion 1041 of the first balance bar 104 and the second link portion 1051 of the second balance bar 105 are respectively pivotally connected to the key cap 101 of the key 10 ′, and the two first links of the first balance bar 104 The hook portion 1042 respectively passes through the first hook hole 1111 of the first connection structure 111 and the second hook hole 1121 of the second connection structure 112 . On the other hand, the two second hook portions 1052 of the second balance pole 105 respectively pass through the third hook hole 1112 of the first connection structure 111 and the fourth hook hole 1122 of the second connection structure 112 .

Please refer to FIG. 4 and FIG. 5 . FIG. 4 is a structural schematic diagram of the assembly of the metal bottom plate and the membrane switch circuit of the conventional keyboard, and FIG. 5 is a schematic diagram of the operation of the first balance bar and the second balance bar of the conventional keyboard. When the key cap 101 of the key 10' moves up or down relative to the metal bottom plate 11, the first balance bar 104 moves repeatedly to the first direction D11 or the second direction D12, and to the first rotation direction D13 or the second rotation direction. Direction D14 is reversed. Similarly, the second balance pole 105 will also repeatedly move toward the first direction D11 or the second direction D12, and turn over toward the first rotation direction D13 or the second rotation direction D14. The purpose of setting the first balance bar 104 and the second balance bar 105 is to keep the key 10' in balance when moving up or down relative to the metal base 11 without tilting, and meanwhile increase the strength of the key cap 101.

However, the first balance bar 104, the second balance bar 105, and the metal bottom plate 11 are all made of metal material. It can be seen from FIG. 4 and FIG. When moving to make the first balance pole 104 and the second balance pole 105 move, the two first hooks 1042 of the first balance pole 104 and the two second hooks 1052 of the second balance pole 105 often collide and rub against each other. Metal base, hence the noise. Especially at the R corners of the two first hooks 1042 and the two second hooks 1052 (marked with oblique lines in FIG. 5 ), but such a sound is an unpleasant noise to the user.

Therefore, there is a need for a keyboard that can reduce noise.

Contents of the invention

The object of the present invention is to provide a keyboard capable of reducing noise.

In a preferred embodiment, the present invention provides a keyboard including a key, a switch circuit board, a bottom plate and a buffer element. The key includes a key cap exposed outside the keyboard and a balance bar, and the balance bar is connected to the key cap, the balance bar includes a connecting rod part and a hook part, and the connecting rod part is connected to the key cap , and the hook portion is located at one end of the connecting rod portion. The switch circuit board is located between the key and the base plate, and the switch circuit board has a key switch corresponding to the key, and is used for being triggered by the key to output a key signal. The bottom plate is arranged under the switch circuit board to carry the button, and the bottom plate has a connection structure for connecting with the hook portion to connect the balance bar and the bottom plate. The buffer element is sheathed on the connection structure and is used to separate the hook portion and the connection structure.

In a preferred embodiment, the buffer element includes an upper buffer part, a lower buffer part and an extension part. The upper buffer part is in contact with the upper surface of the connection structure, and is used for contacting the key cap when the key cap is pressed, so as to absorb an impact force provided by the key cap. The lower buffer part is in contact with the lower surface of the connection structure and is located between the connection structure and the hook part for separating the hook part and the connection structure. The extension part is located between the upper buffer part and the lower buffer part, and is respectively connected to the upper buffer part and the lower buffer part.

In short, the keyboard of the present invention is provided with buffer elements on the connection structure of the bottom plate to separate the first hook portion (and the second hook portion) from the bottom plate. Since the buffer element made of soft material can partially cover the traditional metal connection structure, the first hook and the second hook made of metal material will only contact the buffer element, not the metal. The connection structures made of the materials are in contact to reduce the chance of metal materials colliding with each other. Therefore, the keyboard of the present invention can reduce noise.

Description of drawings

FIG. 1 is a schematic diagram of the appearance and structure of an existing keyboard.

Fig. 2 is a schematic diagram of an exploded structure of an existing keyboard.

Fig. 3 is an exploded schematic view of the existing keyboard from another perspective.

Fig. 4 is a structural schematic diagram of the assembly of the metal bottom plate of the existing keyboard and the membrane switch circuit.

FIG. 5 is a schematic diagram of the operation of the first balance bar and the second balance bar of the conventional keyboard.

Fig. 6 is a schematic diagram of the appearance structure of the keyboard in a preferred embodiment of the present invention.

Fig. 7 is an exploded schematic diagram of the structure of the keyboard in a preferred embodiment of the present invention.

FIG. 8 is an exploded view of the structure of the keyboard of the present invention from another perspective in a preferred embodiment.

FIG. 9 is an exploded schematic view of the switch circuit board of the keyboard in a preferred embodiment of the present invention.

FIG. 10 is a structural schematic diagram of the assembly of the bottom plate and the switch circuit board of the keyboard in a preferred embodiment of the present invention.

FIG. 11 is a schematic diagram of the operation of the first balance bar and the second balance bar of the keyboard in a preferred embodiment of the present invention.

Explanation of reference signs:

1, 2, keyboard

10, 10’, 20, 20’ buttons

11 metal bottom plate

12 Membrane switch circuit

21 Bottom plate

22 switch circuit board

23 cushioning element

24 storage space

101, 201 Key caps

102, 202 Scissors connection element

103 elastic rubber body

104, 204 first balance bar

105, 205 second balance bar

111 The first connection structure

112 Second connection structure

121, 224 key switch

211 Bottom plate hook

212 connection structure

203 Elastic elements

221 upper circuit board

222 lower circuit board

223 isolation layer

225 openings

231 Upper buffer

232 Lower buffer

233 extension

1021 First frame

1022 Second frame

1031 Reaching the top

1041, 2041 first link part

1042, 2042 The first hook

1051, 2051 second link part

1052, 2052 second hook

1111 First hook hole

1112 The third hook hole

1111 Second hook hole

1122 The fourth hook hole

2011 First Link

2012 Second Link

2211 Upper conductive line

2221 lower conductive line

2231 isolation layer opening

2121 Hook hole

D11, D21 First direction

D12, D22 Second direction

D13, D23 first direction of rotation

D14, D24 Second rotation direction

L1, L2 key cap length

W1, W2 The width of the key cap

Detailed ways

In view of the problems caused by the prior art, the present invention provides a keyboard which can solve the problems of the prior art. Firstly, the structure of the keyboard of the present invention will be described. Please refer to FIG. 6 , which is a schematic diagram of the appearance structure of the keyboard of the present invention in a preferred embodiment. The keyboard 2 of the present invention includes a plurality of keys 20, 20', which are exposed outside the keyboard 2. These keys 20, 20' can be pressed by the user's fingers to generate corresponding signals to the computer connected to the keyboard 2 ( not shown in the figure) to make the computer perform the function of the pressed key. Wherein, the length of the key 20 is slightly greater than its width, and the length L2 of the key 20' is much greater than its width W2.

Next, the internal structure of the keyboard 2 of the present invention will be described. Please refer to FIG. 7 and FIG. 8 at the same time. FIG. 7 is an exploded schematic view of the keyboard in a preferred embodiment of the present invention, and FIG. 8 is an exploded schematic view of the keyboard in another perspective of a preferred embodiment of the present invention. In addition to the plurality of keys 20, 20', the keyboard 2 of the present invention also includes a base plate 21, a switch circuit board 22, and a buffer element 23. The base plate 21 is arranged under the plurality of keys 20, 20', and can be connected to a plurality of keys 20, 20'. 20'. The switch circuit board 22 is located between a plurality of keys 20, 20' and the base plate 21, and its function is to be triggered by the keys 20, 20' to output corresponding key signals. The switch circuit board 22 includes an upper circuit board 221 and a lower circuit board 222 , an isolation layer 223 , a key switch 224 and a plurality of openings 225 .

In the keyboard 2, each key 20' includes a key cap 201, at least one scissor-type connection element 202, an elastic element 203, a first balance bar 204, and a second balance bar 205. The scissors-type connection element 202 is connected to the corresponding key cap 201 and the base plate 21 , which can fix the key cap 201 on the base plate 21 and move the key cap 201 relative to the base plate 21 . The elastic element 203 is located between the corresponding key cap 201 and the switch circuit board 22 and corresponds to the key switch 224 . In this preferred embodiment, the bottom plate 21 is made of metal material, the elastic element 203 is an elastic rubber body, and the scissor-type connecting element 202 is made of plastic material.

7 and 8, both the first balance bar 204 and the second balance bar 205 can be connected to the key cap 201, the first balance bar 204 includes a first link part 2041 and two first hook parts 2042, the first link The rod part 2041 can be connected to the key cap 201 , and the two first hook parts 2042 are respectively located at one end and the other end of the first connecting rod part 2041 . Similar to the first balance bar 204, the second balance bar 205 includes a second link part 2051 and two second hook parts 2052, the second link part 2051 can be connected to the keycap 201, and the two second hook parts 2052 are respectively located at one end and the other end of the second link portion 2052 . The base plate 21 includes a plurality of base plate hooks 211 and a plurality of connecting structures 212, and the plurality of base plate hooks 211 and the plurality of connecting structures 212 are formed by extending upward from the base plate 21. The scissors-type connection element 202 is connected, and the scissors-type connection element 202 is fixed on the base plate 21 . The plurality of connection structures 212 correspond to the first balance pole 204 and the second balance pole 205, which can be connected with the first hook portion 2042 and the second hook portion 2052 to fix the first balance pole 204 and the second balance pole 205 on the bottom plate 21, wherein the first hook part 2042 and the second hook part 2052 can rotate relative to the connection structure 212 respectively.

On the other hand, the keycap 201 includes a plurality of first connecting parts 2011 and a plurality of second connecting parts 2012, and the plurality of first connecting parts 2011 are arranged on the inner surface of the keycap 201, which can be connected with the scissor-type connecting element 202 . A plurality of second connecting parts 2012 are also arranged on the inner surface of the key cap 201, and its function is to connect with the first connecting rod part 2041 and the second connecting rod part 2051, wherein the first connecting rod part 2041 and the second connecting rod part 2041 The rod parts 2051 can rotate relative to the second connecting parts 2012 respectively.

Please refer to FIG. 7 and FIG. 9 at the same time. FIG. 9 is an exploded schematic view of the switch circuit board of the keyboard in a preferred embodiment of the present invention. FIG. 9 shows an exploded structure of the switch circuit board 22 , the upper circuit board 221 has an upper conductive circuit 2211 , and the upper conductive circuit 2211 is disposed on the lower surface of the upper circuit board 221 . The lower circuit board 222 is located below the upper circuit board 221 , the lower circuit board 222 includes a lower conductive circuit 2221 and an extension area 2222 , and the lower conductive circuit 2221 is disposed on the upper surface of the lower circuit board 222 . The isolation layer 223 is located between the upper circuit board 221 and the lower circuit board 222 , and the isolation layer 223 has an isolation layer opening 2231 corresponding to the key cap 201 . The function of the isolation layer 223 is to separate the upper conductive circuit 2211 and the lower conductive circuit 2221 . Wherein, the upper conductive circuit 2211, the isolation layer opening 2231 and the lower conductive circuit 2221 jointly form a key switch 224, and each key switch 224 corresponds to a key 20, 20', which can be triggered by the key 20, 20' to output the key Signal.

Next, please refer to FIG. 7 and FIG. 10 at the same time. FIG. 10 is a structural schematic diagram of the assembly of the keyboard bottom plate and the switch circuit board in a preferred embodiment of the present invention. A plurality of connection structures 212 are disposed on the base plate 21 and pass through corresponding openings 225 of the switch circuit board 22, and each connection structure 212 has a plurality of hook holes 2121 corresponding to the first hook portion 2042 and the second hook respectively. Section 2052. The first hook 2042 and the second hook 2052 respectively extend into the corresponding hook holes 2121 to connect the first balance bar 204 (with the second balance bar 205 ) and the bottom plate 21, while restricting the first hook 2042 and the second hook. The hook parts 2052 rotate in the hook holes 2121 respectively. Through the connection between the first balance bar 204 (and the second balance bar 205) and the bottom plate 21, the buffer element 23 is partly located between the connecting structure 212 and the first hook part 2042 (and the second hook part 2052), so as to separate the first The hook portion 2042 (and the second hook portion 2052 ) and the connecting structure 212 .

The buffer element 23 includes an upper buffer portion 231 , a lower buffer portion 232 and an extension portion 233 . The upper buffer portion 231 is in contact with the upper surface of the connection structure 212 , and can contact the inner surface of the key cap 201 when the key cap 201 is pressed, and can absorb the impact force provided by the key cap 201 to reduce noise. The lower buffer part 232 is in contact with the lower surface of the connection structure 212 and is located between the connection structure 212 and the first hook part 2042 (and the second hook part 2052), which can separate the first hook part 2042 (and the second hook part 2052). And the connection structure 212, so as to slow down the collision between the first hook part 2042 (and the second hook part 2052) and the connection structure 212. The extension portion 233 is located between the upper buffer portion 231 and the lower buffer portion 232 , and is respectively connected to the upper buffer portion 231 and the lower buffer portion 232 .

Wherein, an accommodating space 24 is formed between the upper buffer part 231 , the lower buffer part 232 and the extension part 233 , the accommodating space 24 can accommodate part of the connection structure 212 , and the buffer element 23 can be sleeved on the connection structure 212 . In this preferred embodiment, the buffer element 23 is made of silicone rubber (silicone rubber) material or other soft materials, and the upper buffer portion 231, the lower buffer portion 232 and the extension portion 233 are integrally formed, and the buffer element The shape of 23 is ㄈ shape, so as to complement the partial structure of the connecting structure 212 .

As can be seen from FIG. 10 , the buffer element 23 is disposed on the corresponding connection structure 212 and partly located between the connection structure 212 and the first hook portion 2042 (and the second hook portion 2052 ), so as to separate the first hook portion 2042 and the second hook portion 2052 . The connection structure 212 separates the second hook portion 2052 and the connection structure 212 , so that the first hook portion 2042 and the second hook portion 2052 are prevented from contacting the connection structure 212 to cause noise.

It should be noted that when the buffer element 23 is sleeved on the connection structure 212, and the first hook portion 2042 passes through the hook hole 2121 to connect with the connection structure 212, the first hook portion 2042 abuts against the lower buffer of the buffer element 23. The portion 232 can fix the buffer element 23 on the connecting structure 212 . The second hook portion 2052 is also the same, so it will not be repeated. In short, the keyboard 2 of the present invention adopts the following design: when the first hook portion 2042 and the second hook portion 2052 respectively pass through the corresponding hook holes 2121, the first hook portion 2042 and the second hook portion 2052 can respectively touch down. The buffer part 232 is used to fix the buffer element 23 on the connection structure 212 , therefore, no additional adhesive is required to fix the buffer element 23 on the connection structure 212 , and the combination between the two can be performed.

Next, the operation of pressing the button 20' will be described. When the user touches the key cap 201 of any key 20', the key cap 201 moves downward relative to the bottom plate 21, so that the scissors-type connecting element 202 is pushed against and swings, and the downwardly moving key cap 201 pushes against the elastic The element 203 is such that the elastic element 203 is pressed against to deform and trigger the corresponding key switch 224 to generate a corresponding key signal. And when the user no longer touches the button 20', the button cap 201 will move upward relative to the bottom plate 21 in response to the elastic force generated by the elastic element 203 recovering from the deformed state, so as to push the button cap 201 to move upward, and at the same time The scissors-type connecting element 202 is driven to swing to return from the folded state to the open-closed state, and the button cap 201 will return to the position before being pressed.

Please refer to FIG. 11 , which is a schematic diagram of the operation of the first balance bar and the second balance bar of the keyboard in a preferred embodiment of the present invention. When the key cap 201 of the key 20' moves up or down relative to the bottom plate 21, the first balance bar 204 moves repeatedly to the first direction D21 or the second direction D22, and to the first rotation direction D23 or the second direction D22. The direction of rotation D24 turns. Wherein, the first link part 2041 rotates relative to the plurality of second connecting parts 2012, and the two first hook parts 2042 rotate in the corresponding hook holes 2121 respectively. Due to the setting of the lower buffer part 232, the first hook parts 2042 is not in contact with the bottom plate 21. Similarly, the second balance bar 205 will also repeatedly move toward the first direction D21 or the second direction D22, and rotate toward the first rotation direction D23 or the second rotation direction D24. Wherein, the second link part 2051 rotates relative to the plurality of second connecting parts 2012, and the two second hook parts 2052 rotate in the corresponding hook holes 2121 respectively. Due to the setting of the lower buffer part 232, the second hook parts 2052 is not in contact with the bottom plate 21 either.

According to the above, it can be seen that the keyboard of the present invention is provided with buffer elements on the connection structure of the bottom plate to separate the first hook portion (and the second hook portion) from the bottom plate. Since the buffer element made of soft material can partially cover the traditional metal connection structure, the first hook and the second hook made of metal material will only contact the buffer element, not the metal. The connection structures made of the materials are in contact to reduce the chance of metal materials colliding with each other. Therefore, the keyboard of the present invention can reduce noise.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, all other equivalent changes or modifications that do not deviate from the disclosed spirit of the present invention should be included in the present invention within the scope of protection.

Claims (10)

1. a kind of keyboard, including：

One button, including：

One button cap is revealed in except the keyboard；And

One balancing pole is connected to the button cap, which includes：

One link rod part is connected to the button cap；And

One hook part is located at one end of the link rod part；

One switching circuit board is located at the lower section of the button, which has a key switch, corresponds to the button, uses A push button signalling is exported to be triggered by the button；

One bottom plate is set to the lower section of the switching circuit board, and to carry the button, which has a connection structure, to It is connect with the hook part and connects the balancing pole and the bottom plate；And

One buffer element is sheathed in the connection structure, to separate the hook part and the connection structure.

2. keyboard as described in claim 1, the wherein buffer element include：

Buffer part on one is contacted with the upper surface of the connection structure, to be contacted with the button cap when button cap is touched, And it can absorb the impact force that the button cap is provided；

Buffer part once, contacts with the lower surface of the connection structure and between the connection structure and the hook part, to point Every the hook part and the connection structure；And

One extension is located on this between buffer part and the lower buffer part, and is connected on this buffer part and this is lower slow Rush portion.

3. keyboard as claimed in claim 2 forms one between buffer part, the lower buffer part and the extension wherein on this and holds Receive space, the accommodation space can the containing section connection structure, which is able to be sheathed in the connection structure.

4. keyboard as claimed in claim 2, wherein when the buffer element is sheathed in the connection structure, and the hook part and the company When binding structure connects, which supports the lower buffer part, and fixes the buffer element in the connection structure.

5. keyboard as described in claim 1, the wherein shape of the buffer element are ㄈ shapes, and are tied with the part of the connection structure Structure is complementary.

6. keyboard as described in claim 1, buffer part, the lower buffer part and the extension are integrally formed wherein on this.

7. keyboard as described in claim 1, the wherein switching circuit board include：

Conducting wire on wiring board, including one on one, and conducting wire is set on this on a lower surface of wiring board on this；

Wiring board once is located at the lower section of wiring board on this, including conducting wire once, and the lower conducting wire is set under this On one upper surface of wiring board；And

One separation layer is located on this between wiring board and the lower wiring board, and includes a separation layer trepanning, to separate on this Conducting wire and the lower conducting wire；Conducting wire, the separation layer trepanning and the lower common shape of conducting wire wherein on this At the key switch.

8. keyboard as claimed in claim 7, the wherein switching circuit board have a trepanning, correspond to the connection structure, and should Trepanning penetrates through wiring board on this, the lower wiring board and the separation layer,

The connection structure passes through the trepanning, and the hook part is enable to be connect with the connection structure.

9. keyboard as described in claim 1, the wherein connection structure have one to hook hole, correspond to the hook part, for the hook part It passes through and connects the balancing pole and the bottom plate；Wherein, which is located between the connection structure and the hook part, To separate the hook part and the connection structure.

10. keyboard as described in claim 1, the wherein button further include：

One scissor connecting element is connected to the button cap and the bottom plate, to fix the button cap on the bottom plate, and makes The button cap is moved relative to the bottom plate；And

One elastic element between the button cap and the switching circuit board and corresponds to the key switch, to be pressed by this Keycap pushes against and supports the switching circuit board；Wherein, when the elastic element is no longer pushed against by the button cap, which carries The button cap is given for an elastic force.