CN108206111B - Keyboard with a keyboard body - Google Patents
Keyboard with a keyboard body Download PDFInfo
- Publication number
- CN108206111B CN108206111B CN201611166953.0A CN201611166953A CN108206111B CN 108206111 B CN108206111 B CN 108206111B CN 201611166953 A CN201611166953 A CN 201611166953A CN 108206111 B CN108206111 B CN 108206111B
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- China
- Prior art keywords
- keyboard
- key
- circuit board
- bottom plate
- key cap
- Prior art date
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- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000007769 metal material Substances 0.000 abstract description 11
- 239000002184 metal Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
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- 239000007779 soft material Substances 0.000 description 2
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- 230000004888 barrier function Effects 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
Abstract
The invention relates to a keyboard which comprises keys, a bottom plate, a switch circuit board, a flexible cover body and a cushion pad, wherein the keys comprise key caps and balancing rods connected with the key caps and the flexible cover body. The soft cover body is arranged on the bottom plate and forms an accommodating space with the bottom plate, so that the balance rod is connected with the bottom plate by stretching into the accommodating space. The buffer pad is arranged on the bottom plate and positioned in the accommodating space, so that the balance rod made of metal materials and the bottom plate can be separated by the soft cover body and the buffer pad, and the keyboard can reduce noise.
Description
Technical Field
The present invention relates to an input device, and more particularly, to a keyboard having a plurality of keys.
Background
Common peripheral input devices for computers include mice, keyboards, trackballs, etc., wherein the keyboard can directly input characters and symbols to the computer, and therefore, the users and manufacturers of the input devices pay attention to the input devices. The subject of the invention is a keyboard.
Please refer to fig. 1, which is a schematic diagram of an appearance structure of a conventional keyboard. The conventional keypad 1 has a plurality of keys 10, 10 'on the surface thereof, and the key 10 is classified into a general-sized key, while the key 10' is classified into a long-sized key. The length of the key 10 is slightly larger than its width, and the length L1 of the key 10' is much larger than its width W1. The keys 10 and 10 'are provided for users to generate corresponding signals to the computer by touching with fingers, so that the computer can execute the touched key functions, generally speaking, the touched keys 10 and 10' can input symbols such as English letters, numbers or execute various functions (such as F1-F12, Delete). The conventional keyboard 1 is a keyboard for a notebook computer.
Next, the internal structure of the conventional keyboard will be explained. Referring to fig. 1 to 3, fig. 2 is an exploded view of a conventional keyboard, and fig. 3 is an exploded view of another view angle of the conventional keyboard. The conventional 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 connecting element 102 and an elastic rubber body 103, the scissors-type connecting element 102 is respectively connected to the key cap 101 and the metal base plate 11, and 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 relatively to each other. In addition, the elastic rubber body 103 is disposed between the key cap 101 and the metal base plate 11, and has a top part 1031.
When a user touches the key cap 101 of any one of the keys 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 scissors-type connecting element 102 change from the open-close state to the overlapped state, and the key cap 101 moving downward pushes against the elastic rubber body 103, so that the abutting portion 1031 of the elastic rubber body 103 abuts against and deforms to trigger the corresponding key switch 121, so that the membrane switch circuit 12 generates a corresponding key signal. When the user does not touch the keys 10 and 10', the key cap 101 moves upward relative to the metal base plate 11 in response to the elastic force generated by the elastic rubber body 103 recovering from the deformed state, and at this time, the first frame 1021 and the second frame 1022 change from the folded state to the open-closed state, and the key cap 101 recovers to the position before being touched.
In the conventional keyboard 1, the structure of some keys 10 'having a length L1 much greater than a width W1 is different from that of the keys 10, because the length L1 of the key cap 101 of the key 10' is long, the key cap 101 is easy to shake during the process of pressing the key 10', which affects the smoothness of the operation of the key 10' and even the touch feeling of the user. Therefore, the key 10' is also provided with a special mechanism to improve the smoothness of its operation. The key 10' further includes a first balance bar 104 and a second balance bar 105, and the first balance bar 104 includes a first link portion 1041 and two first hook portions 1042, the two first hook portions 1042 are respectively located at two ends of the first balance bar 104. And the second balance bar 105 includes a second link portion 1051 and two second hook portions 1052, the two second hook portions 1052 being respectively located at both ends of the second balance bar 105. In addition, the metal base 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 thin film switch circuit 12. The first connecting structure 111 includes a first hook hole 1111 and a third hook hole 1112, and the second connecting structure 112 includes a second hook hole 1121 and a fourth hook hole 1122 corresponding to the first hook hole 1111 and the third hook hole 1112, respectively.
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 pivoted to the key cap 101 of the key 10', and the two first hook portions 1042 of the first balance bar 104 respectively pass through the first hook holes 1111 of the first connecting structure 111 and the second hook holes 1121 of the second connecting structure 112. On the other hand, the two second hook portions 1052 of the second balance bar 105 respectively pass through the third hook hole 1112 of the first connecting structure 111 and the fourth hook hole 1122 of the second connecting structure 112.
Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a metal base plate and a membrane switch circuit assembly of a conventional keyboard, and fig. 5 is an operation diagram of a first balance bar and a second balance bar of the conventional keyboard. When the key cap 101 of the key 10' moves upward or downward relative to the metal base plate 11, the first balance bar 104 repeatedly moves in the first direction D11 or the second direction D12 and turns in the first rotating direction D13 or the second rotating direction D14. Similarly, the second balance bar 105 also repeatedly moves in the first direction D11 or the second direction D12 and turns in the first rotating direction D13 or the second rotating direction D14. The first and second balance bars 104 and 105 are provided to balance the key 10' against tilting when moving up or down with respect to the metal base plate 11, and to 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, as shown in fig. 4 and 5, when the key cap 101 of the key 10' moves upward or downward relative to the metal bottom plate 11 to make the first balance bar 104 and the second balance bar 105 operate, the two first hook portions 1042 of the first balance bar 104 and the two second hook portions 1052 of the second balance bar 105 often collide with and rub against the metal bottom plate, thereby generating sound. Particularly, the two first hook portions 1042 and the two second hook portions 1052 at the R-angle (indicated by oblique lines in fig. 5), but such sound is unpleasant noise for the user.
Therefore, a keyboard with reduced noise is desired.
Disclosure of Invention
The invention mainly aims 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, a flexible cover and a cushion pad. The key comprises a key cap and a balance rod which are exposed outside the keyboard, the balance rod is connected with the key cap, the balance rod comprises a connecting rod part and a hook part, the connecting rod part is connected with the key cap, and the hook part is positioned at one end of the connecting rod part. The switch circuit board is arranged between the key and the bottom board, is triggered by the key to output a key signal, and is arranged below the switch circuit board to bear the key. The flexible cover body is arranged on the bottom plate and forms an accommodating space with the bottom plate, so that the hook part extends into the accommodating space to limit the hook part to slide in the accommodating space. The cushion pad is arranged on the bottom plate and positioned in the accommodating space to separate the hook part from the bottom plate.
In a preferred embodiment, the present invention also provides a keyboard including a key, a switch circuit board, a bottom plate, a light emitting device for generating a light beam, a light guide plate, and a flexible cover. The key comprises a key cap and a balance rod which are exposed outside the keyboard, the balance rod is connected with the key cap, the balance rod comprises a connecting rod part and a hook part, the connecting rod part is connected with the key cap, and the hook part is positioned at one end of the connecting rod part. The bottom plate is arranged below the key and used for being connected with the key. The switch circuit board is located between the key and the bottom plate and is used for being triggered by the key to output a key signal. The bottom plate is arranged below the switch circuit board and used for bearing the key. The light guide plate is arranged below the bottom plate and positioned on one side of the light-emitting element and used for guiding the light beam so that the light beam is projected to the key. The flexible cover body is arranged on the light guide plate and forms an accommodating space with the light guide plate, so that the hook part extends into the accommodating space to limit the hook part to slide in the accommodating space.
In short, the keyboard provided by the invention has the advantages and beneficial effects that: the keyboard of the invention is provided with a flexible cover body on the upper surface of the bottom plate or the light guide plate to separate the first hook part (and the second hook part) from the bottom plate. Because the soft cover body made of soft material replaces the traditional first connecting structure and second connecting structure made of metal, the first hook part and the second hook part made of metal material only contact with the soft cover body but not contact with the metal material, thereby reducing the chance of collision with the metal material. Therefore, the keyboard can reduce noise.
Drawings
Fig. 1 is a schematic view of an appearance structure of a conventional keyboard.
Fig. 2 is an exploded view of a conventional keyboard.
Fig. 3 is an exploded view of another view of the conventional keyboard.
Fig. 4 is a schematic structural diagram of the assembly of a metal base plate and a membrane switch circuit of a conventional keyboard.
Fig. 5 is an operation diagram of a first balance bar and a second balance bar of a conventional keyboard.
Fig. 6 is an appearance structure diagram of the keyboard in the first preferred embodiment of the invention.
Fig. 7 is an exploded view of the keyboard according to the first preferred embodiment of the present invention.
Fig. 8 is an exploded view of the keyboard according to the first preferred embodiment of the present invention from another perspective.
Fig. 9 is an exploded view of the switch circuit board of the keyboard according to the first preferred embodiment of the present invention.
Fig. 10 is an assembled structural diagram of the bottom plate and the switch circuit board of the keyboard in the first preferred embodiment of the invention.
Fig. 11 is an operation diagram of the first balance bar and the second balance bar of the keyboard according to the first preferred embodiment of the present invention.
Fig. 12 is an exploded view of the keyboard according to the second preferred embodiment of the present invention.
Fig. 13 is an exploded view of another perspective of the keyboard according to the second preferred embodiment of the present invention.
Fig. 14 is a structural diagram illustrating an assembly of the light guide plate, the bottom plate and the switch circuit board of the keyboard according to the second preferred embodiment of the present invention.
FIG. 15 is an exploded view of the keyboard according to the third preferred embodiment of the present invention.
Description of reference numerals:
1. 2, 3, 4 keyboard
10. 10', 20 ', 30 ', 40 ' ' key
11 Metal soleplate
12 thin film switch circuit
21. 31, 41 bottom plate
22. 32, 42 switch circuit board
23. 36, 43 soft cover
24 buffer cushion
25. 37 accommodating space
33 light emitting element
34 light guide plate
35 power supply circuit board
101. 201, 301, 401 key cap
102. 202, 302, 402 scissor type connecting element
103 elastic rubber body
104. 204, 304, 404 first balance bar
105. 205, 305, 405 second balance bar
111 first connecting structure
112 second connecting structure
121. 224, 424 push-button switch
211. 411 bottom plate clamping hook
203. 303, 403 elastic element
221. 421 on-line board
222. 422 lower circuit board
223. 423 barrier layer
225. 425 opening of the hole
311 second opening hole
325 first opening hole
1021 first frame
1022 second frame
1031 abutting part
1041. 2041, 3041, 4041 first connecting rod part
1042. 2042, 3042, 4042 first hook part
1051. 2051, 3051, 4051 second link portion
1052. 2052, 3052 and 4052 second hook part
1111 first hook hole
1112 third hook hole
1111 second hook hole
1122 fourth hook hole
2011 first connector
2012 second connecting part
2211 upper conductive line
2221 lower conductive line
2231 isolating layer openings
D11 and D21 first direction
D12 and D22 second direction
D13, D23 first rotation direction
D14 and D24 second rotation direction
Length of L1, L2 key cap
Width of W1, W2 key cap
Detailed Description
In view of the troubles caused by the prior art, the invention provides a keyboard capable of solving the problems of the prior art. First, a structure of the keyboard of the present invention is described, please refer to fig. 6, which is an appearance structure diagram of the keyboard in a first preferred embodiment of the present invention. The keyboard 2 of the present invention includes a plurality of keys 20, 20 ' exposed outside the keyboard 2, and the keys 20, 20 ' can be touched by a user's finger to generate a corresponding signal to a computer (not shown in the figure) connected to the keyboard 2, so that the computer can execute the function of the touched key. The length of the key 20 is slightly larger than its width, and the length L2 of the key 20' is much larger than its width W2.
The internal structure of the keyboard 2 of the present invention is explained next. Referring to fig. 7, fig. 8 and fig. 9, fig. 7 is an exploded view of the keyboard of the present invention in the first preferred embodiment, fig. 8 is an exploded view of the keyboard of the present invention in another perspective view in the first preferred embodiment, and fig. 9 is an exploded view of the switch circuit board of the keyboard of the present invention in the first preferred embodiment. The keyboard 2 of the present invention further comprises a bottom plate 21, a switch circuit board 22, a flexible cover 23 and a cushion pad 24 in addition to the plurality of keys 20, 20 ', wherein the bottom plate 21 is disposed below the plurality of keys 20, 20 ' and can be connected to the plurality of keys 20, 20 '. The switch circuit board 22 is located between the plurality of keys 20, 20 'and the bottom plate 21, and functions to be triggered by the keys 20, 20' to output corresponding key signals, and the switch circuit board 22 includes an upper circuit board 221, a lower circuit board 222, an isolation layer 223, a key switch 224, and a plurality of openings 225. In addition, each key 20' includes a key cap 201, at least one scissors-type connecting element 202, an elastic element 203, a first balance bar 204 and a second balance bar 205. The scissors-type connecting element 202 is connected to the key cap 201 and the bottom plate 21, and can fix the key cap 201 on the bottom plate 21 and move the key cap 201 relative to the bottom 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, and functions to be pushed by the corresponding key cap 201 to abut against the corresponding key switch 224. In the preferred embodiment, the base plate 21 is made of metal material, the elastic element 203 is an elastic rubber body, and the scissors-type connecting element 202 is made of plastic material.
In fig. 7 and 8, the first balance bar 204 and the second balance bar 205 are both connected to the key cap 201, the first balance bar 204 includes a first connecting bar portion 2041 and two first hook portions 2042, the first connecting bar portion 2041 can be connected to the key cap 201, and the two first hook portions 2042 are respectively located at one end and the other end of the first connecting bar portion 2041. Similar to the first balance bar 204, the second balance bar 205 includes a second link portion 2051 and two second hook portions 2052, the second link portion 2051 can be connected to the key cap 201, and the two second hook portions 2052 are respectively located at one end and the other end of the second link portion 2052. The base plate 21 has a plurality of base plate hooks 211, which are used to connect with the scissors connecting element 202 and fix the scissors connecting element 202 on the base plate 21. On the other hand, the key cap 201 includes a plurality of first connecting portions 2011 and a plurality of second connecting portions 2012, and the plurality of first connecting portions 2011 are disposed on an inner surface of the key cap 201 and can be connected to the scissors-type connecting element 202. The second connecting portions 2012 are also disposed on the inner surface of the key cap 201 and function to connect with the first connecting rod portions 2041 and the second connecting rod portions 2051.
In the switch circuit board 22, the upper circuit board 221 has an upper conductive trace 2211, and the upper conductive trace 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 trace 2221 and an extension area 2222, and the lower conductive trace 2221 is disposed on an 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, and the isolation layer 223 functions to separate the upper conductive trace 2211 and the lower conductive trace 2221. The upper conductive traces 2211, the isolation layer openings 2231 and the lower conductive traces 2221 together form key switches 224, and each key switch 224 corresponds to one key 20, 20 ', which can be activated by the key 20, 20' to output a key signal.
Referring to fig. 7 and 10, fig. 10 is a structural diagram illustrating an assembly of a bottom plate and a switch circuit board of a keyboard according to a first preferred embodiment of the present invention. The flexible cover 23 is disposed on the bottom plate 21 and forms a plurality of accommodating spaces 25 with the bottom plate 21, so that the first hook portions 2042 and the second hook portions 2052 respectively extend into the plurality of accommodating spaces 25, and the first hook portions 2042 and the second hook portions 2052 are limited to respectively slide in the plurality of accommodating spaces 25. The flexible cover 23 is disposed on the upper surface of the bottom plate 21 in an adhesive manner. In addition, the cushion pad 24 is disposed on the upper surface of the bottom plate 21 and located in the accommodating space 25, and functions to separate the first hook portion 2042 from the bottom plate 21 and separate the second hook portion 2052 from the bottom plate 21, so as to prevent the first hook portion 2042 and the second hook portion 2052 from contacting the bottom plate 21 and generating noise. In the preferred embodiment, the accommodating spaces 25 are through holes, so that the first hook portions 2042 and the second hook portions 2052 respectively pass through the corresponding through holes, the flexible cover is made of silicone material (commonly referred to as silicon) or flexible plastic material, and the cushion pad 24 is made of flexible material or plastic material.
The operation of the key 20' when pressed will be described next. When a 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 to swing, and the key cap 201 moving downward pushes the elastic element 203, so that the elastic element 203 is pushed to deform and trigger the corresponding key switch 224, so as to generate the corresponding key signal. When the user no longer touches the button 20', the button cap 201 moves upward relative to the bottom plate 21 in response to the elastic force generated by the elastic element 203 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 to the open-close state from the folded state, and the button cap 201 returns to the position before being touched.
Please refer to fig. 11, which is an operation diagram of the first balance bar and the second balance bar of the keyboard according to the first preferred embodiment of the present invention. During the process that the key cap 201 of the key 20' moves upward or downward relative to the bottom plate 21, the first balance bar 204 repeatedly moves in the first direction D21 or the second direction D22, and turns over in the first rotating direction D23 or the second rotating direction D24. The first connecting portion 2041 is turned over relative to the second connecting portions 2012, and the two first hook portions 2042 are turned over in the corresponding accommodating spaces 25, respectively, without contacting the bottom plate 21. Similarly, the second balance bar 205 is also repeatedly moved in the first direction D21 or the second direction D22 and turned in the first rotating direction D23 or the second rotating direction D24. The second link portion 2051 is turned over relative to the second connecting portions 2012, and the two second hook portions 2052 are respectively turned over in the corresponding accommodating spaces 226 without contacting the bottom plate 21.
As can be seen from the above, the keyboard 2 of the present invention can separate the first hook portion 2042 and the second hook portion 2052 from the bottom plate 21 by the arrangement of the flexible cover 23 and the cushion pad 24. Even though the first balance bar 204, the second balance bar 205 and the bottom plate 21 are made of metal materials, neither the first hook 2042 nor the second hook 2052 collides with the bottom plate 21 and does not generate sound, so the keyboard 2 of the present invention has the effect of reducing noise.
Furthermore, the present invention provides a second preferred embodiment different from the above-mentioned embodiment. Referring to fig. 12 and fig. 13, fig. 12 is an exploded view of the keyboard according to the second preferred embodiment of the present invention, and fig. 13 is an exploded view of another perspective of the keyboard according to the second preferred embodiment of the present invention. The keyboard 3 of the present invention includes a plurality of keys 30 ', a bottom plate 31, a switch circuit board 32, a light emitting device 33, a light guide plate 34, a power supply circuit board 35 and a flexible cover 36, wherein each key 30' includes a key cap 301, at least one scissors-type connecting element 302, an elastic element 303, a first balance bar 304 and a second balance bar 305, wherein the first balance bar 304 includes a first link 3041 and two first hooks 3042, and the second balance bar 305 includes a second link 3051 and two second hooks 3052. The switch circuit board 32 includes a plurality of first openings 325 in addition to the upper circuit board, the lower circuit board, the isolation layer, and the key switches, and the bottom plate 31 has a plurality of second openings 311. The keyboard 3 of the present preferred embodiment has substantially the same structure as the keyboard 2 of the first preferred embodiment, and the description of the same parts is omitted. The difference between the two is three, firstly, the keyboard 3 of the preferred embodiment further includes a light emitting device 33, a light guide plate 34 and a power supply circuit board 35. Second, the structure of the flexible cover 325 in the preferred embodiment. Third, the structure of the chassis 31 and the switch circuit board 32.
Referring to fig. 12, 13 and 14, fig. 14 is a structural diagram illustrating an assembly of the light guide plate, the bottom plate and the switch circuit board of the keyboard according to the second preferred embodiment of the present invention. The light guide plate 34 is disposed under the bottom plate 31, and the light emitting element 33 is disposed at one side of the light guide plate 34 and functions to generate a light beam B. The power supply circuit board 35 is disposed below the bottom plate 31 and also located at one side of the light guide plate 34, and can carry the light emitting device 33 thereon and supply power to the light emitting device 33, so that the light emitting device 33 can operate.
As shown in fig. 12 to 14, the flexible cover 36 is disposed on the light guide plate 34 and forms a plurality of accommodating spaces 37 with the light guide plate 34, such that the first hook 3042 and the second hook 3052 can respectively extend into the plurality of accommodating spaces 37. The flexible cover 36 is disposed on the upper surface of the light guide plate 34 in an adhesive manner, and one end of the plurality of accommodating spaces 37 is closed, which helps to reduce noise.
On the other hand, the switch circuit board 32 further includes a first opening 325 corresponding to the flexible cover 36 according to the structure of the flexible cover 36. Similarly, the bottom plate 31 is further provided with a second opening 311 corresponding to the flexible cover 36. Therefore, the flexible cover 36 can sequentially pass through the second opening 311 and the first opening 325 and be located between the bottom plate 31 and the key cap 301, so that the first hook 3042 and the second hook 3052 can respectively extend into the accommodating space 37, as shown in fig. 14.
In a preferred embodiment, a buffer pad may be disposed between the upper surface of the light guide plate and the receiving space to prevent the first hook and the second hook from contacting the light guide plate, thereby preventing the first hook and the second hook from generating collision noise.
In addition, the present invention provides a third preferred embodiment different from the above. Please refer to fig. 15, which is an exploded view of a keyboard according to a third preferred embodiment of the present invention. The keyboard 4 of the present invention includes a plurality of keys 40 ', a bottom plate 41, a switch circuit board 42 and a flexible cover 43, each key 40' includes a key cap 401, at least one scissors-type connecting element 402, an elastic element 403, a first balance bar 404 and a second balance bar 405, wherein the first balance bar 404 includes a first connecting bar portion 4041 and two first hook portions 4042, and the second balance bar 405 includes a second connecting bar portion 4051 and two second hook portions 4052. The switch circuit board 42 includes an upper circuit board 421, a lower circuit board 422, an isolation layer 423, a key switch 424 and an opening 425, and the bottom board 41 has a plurality of bottom board hooks 411. The keyboard 4 of the present preferred embodiment has substantially the same structure as the keyboard 2 of the first preferred embodiment, and the description of the same parts is omitted. The difference between the two is that the flexible cover 43 is disposed on the isolation layer 423 of the switch circuit board 42.
In detail, the switch circuit board 42 of the preferred embodiment is designed to have a structure in which the isolation layer 423 is partially exposed from the upper surface thereof, so that the flexible cover 43 can be adhesively disposed on the upper surface of the isolation layer 423. In addition, the openings 425 of the switch circuit board 42 penetrate through the upper circuit board 421, the lower circuit board 422 and the isolation layer 423, so that the plurality of bottom board hooks 411 can penetrate through the corresponding openings 425 to be connected with the scissors-type connecting element 402. That is, the switch circuit board 42 and the flexible cover 43 made of non-metal material can be used to separate the first hook portion (and the second hook portion) from the bottom plate, so as to avoid the first hook portion and the second hook portion from colliding with the bottom plate. It is used for illustration only and not for limitation. In another preferred embodiment, the flexible cover can also be disposed on the upper surface of the upper circuit board of the switch circuit board in an adhesive manner, which can also achieve the effect of reducing noise.
According to the above, the keyboard of the invention is provided with the flexible cover on the upper surface of the bottom plate or the light guide plate to separate the first hook portion (and the second hook portion) from the bottom plate. Because the soft cover body made of soft material replaces the traditional first connecting structure and second connecting structure made of metal, the first hook part and the second hook part made of metal material only contact with the soft cover body but not contact with the metal material, thereby reducing the chance of collision with the metal material. Therefore, the keyboard can reduce noise.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, so that other equivalent changes and modifications can be made without departing from the spirit of the present invention.
Claims (12)
1. A keyboard, the keyboard comprising:
a key, comprising:
a key cap exposed outside the keyboard; and
a balance bar connected to the key cap, the balance bar comprising:
a connecting rod part connected with the key cap; and
a hook part located at one end of the connecting rod part;
the switch circuit board is positioned below the key and is used for being triggered by the key to output a key signal;
a bottom plate arranged below the switch circuit board for bearing the key;
a soft cover body which is arranged on the bottom plate and forms an accommodating space with the bottom plate, so that the hook part extends into the accommodating space to limit the hook part to slide in the accommodating space, wherein the soft cover body is arranged on the upper surface of the bottom plate in an adhesion mode; and
a buffer pad, which is arranged on the bottom plate and is positioned in the accommodating space and used for separating the hook part and the bottom plate.
2. The keyboard of claim 1, wherein the switch circuit board comprises:
the upper circuit board comprises an upper conductive circuit, and the upper conductive circuit is arranged on a lower surface of the upper circuit board;
the lower circuit board is positioned below the upper circuit board and comprises a lower conductive circuit, and the lower conductive circuit is arranged on the upper surface of the lower circuit board; and
the isolation layer is positioned between the upper circuit board and the lower circuit board and comprises an isolation layer opening for separating the upper conductive circuit and the lower conductive circuit; wherein the upper conductive circuit, the isolation layer opening and the lower conductive circuit together form a key switch.
3. The keyboard of claim 1, wherein the switch circuit board has an opening corresponding to the flexible cover, and the flexible cover passes through the opening to allow the hook portion to extend into the accommodating space.
4. The keyboard of claim 1, wherein one end of the receiving space is a closed structure, such that the hook portion extends into the receiving space.
5. The keyboard of claim 1, wherein the receiving space is a through hole, and the hook portion is disposed through the through hole.
6. The keyboard of claim 1, wherein the flexible cover is made of silicone material or flexible plastic material.
7. A keyboard, the keyboard comprising:
a key, comprising:
a key cap exposed outside the keyboard; and
a balance bar connected to the key cap, the balance bar comprising:
a connecting rod part connected with the key cap; and
a hook part located at one end of the connecting rod part;
the switch circuit board is positioned below the key and is used for being triggered by the key to output a key signal;
a bottom plate arranged below the switch circuit board for bearing the key;
a light emitting device for generating a light beam;
the light guide plate is arranged below the bottom plate and positioned on one side of the light-emitting element and used for guiding the light beam so that the light beam is projected to the key; and
a soft cover body, which is arranged on the light guide plate and forms a containing space with the light guide plate, so that the hook part extends into the containing space to limit the hook part to slide in the containing space, wherein the soft cover body is arranged on an upper surface of the light guide plate in an adhesion mode.
8. The keyboard of claim 7, wherein the switch circuit board has a first opening corresponding to the flexible cover for the flexible cover to pass through; the bottom plate is provided with a second opening corresponding to the flexible cover body so that the flexible cover body can penetrate through the second opening; the flexible cover body penetrates through the second opening and the first opening, so that the hook part can extend into the accommodating space.
9. The keyboard of claim 7, wherein one end of the receiving space is a closed structure, such that the hook portion extends into the receiving space.
10. The keyboard of claim 7, wherein the receiving space is a through hole, and the hook portion is disposed through the through hole.
11. The keyboard of claim 7 wherein the keys further comprise:
a scissors type connecting element connected with the key cap and the bottom plate and used for fixing the key cap on the bottom plate and enabling the key cap to move relative to the bottom plate; and
an elastic element, located between the key cap and the switch circuit board, for being pushed by the key cap to push against the switch circuit board; when the elastic element is not pushed by the key cap any more, the elastic element provides an elastic force to the key cap.
12. The keyboard of claim 7, wherein the keyboard further comprises a buffer disposed on the light guide plate and located in the receiving space for separating the hook portion from the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166953.0A CN108206111B (en) | 2016-12-16 | 2016-12-16 | Keyboard with a keyboard body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166953.0A CN108206111B (en) | 2016-12-16 | 2016-12-16 | Keyboard with a keyboard body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108206111A CN108206111A (en) | 2018-06-26 |
| CN108206111B true CN108206111B (en) | 2020-06-16 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611166953.0A Expired - Fee Related CN108206111B (en) | 2016-12-16 | 2016-12-16 | Keyboard with a keyboard body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108206111B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2282704A (en) * | 1993-06-21 | 1995-04-12 | Daw Shen Chen | Mechanical key switch |
| JP2001184979A (en) * | 1999-12-24 | 2001-07-06 | Brother Ind Ltd | Key switch device, and key board and electronic apparatus having the same |
| TW201508792A (en) * | 2013-08-16 | 2015-03-01 | Primax Electronics Ltd | Key structure |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2350854Y (en) * | 1998-06-09 | 1999-11-24 | 明碁电脑股份有限公司 | Key |
| US6815627B2 (en) * | 2002-10-17 | 2004-11-09 | Lite-On Technology Corporation | Keyswitch structure for computer keyboard |
| US20060238281A1 (en) * | 2005-04-22 | 2006-10-26 | Steinberg Dan A | Keyboard having magnet-actuated switches or sensors |
| TWI316261B (en) * | 2006-08-02 | 2009-10-21 | Darfon Electronics Corp | Keyboard structure |
| CN105761991A (en) * | 2013-06-25 | 2016-07-13 | 致伸科技股份有限公司 | Light-emitting keyboard device |
| CN103390514B (en) * | 2013-06-26 | 2016-03-02 | 苏州达方电子有限公司 | Button |
| CN204332773U (en) * | 2015-01-19 | 2015-05-13 | 群光电子(苏州)有限公司 | Button and apply the keyboard of this button |
| CN204360974U (en) * | 2015-01-23 | 2015-05-27 | 群光电子(苏州)有限公司 | Press-key structure |
| CN104766744A (en) * | 2015-04-08 | 2015-07-08 | 苏州达方电子有限公司 | Press key |
| CN105070564A (en) * | 2015-07-29 | 2015-11-18 | 苏州达方电子有限公司 | Key and keyboard |
-
2016
- 2016-12-16 CN CN201611166953.0A patent/CN108206111B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2282704A (en) * | 1993-06-21 | 1995-04-12 | Daw Shen Chen | Mechanical key switch |
| JP2001184979A (en) * | 1999-12-24 | 2001-07-06 | Brother Ind Ltd | Key switch device, and key board and electronic apparatus having the same |
| TW201508792A (en) * | 2013-08-16 | 2015-03-01 | Primax Electronics Ltd | Key structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108206111A (en) | 2018-06-26 |
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Granted publication date: 20200616 |