CN104425162A - Key structure - Google Patents

Abstract

The invention discloses a key structure, which comprises a bottom plate, a switch circuit board, a key cap and a frame. The key cap is provided with a magnetic element and is arranged on the edge of the key cap, and the frame is provided with a magnetic coating which is arranged on the edge of the frame and is positioned below the magnetic element. When the key cap is pressed, the key cap moves to trigger the switch circuit board so as to generate a key signal. When the key cap is no longer pressed, the key cap moves toward the magnetic element in response to the magnetic force generated by the magnetic element. Therefore, the key structure of the invention can normally operate without arranging elastic rubber.

Description

key structure

technical field

The present invention relates to a key structure, in particular to a key structure applied to a keyboard device.

Background technique

Computers have been widely used and filled in the daily life of modern people. Whether it is work or entertainment, computers play a very important role. With the development of the times, computers are evolving, and computer peripherals are also developing. , where the input device is an important bridge between the user and the computer, especially the keyboard device in the input device is more important, so keyboard manufacturers launch keyboard devices that meet various usage needs in response to various usage needs.

The keyboard device is composed of a plurality of key structures. Please refer to FIG. 1 for the key structure, which is an exploded schematic diagram of the existing key structure. The existing key structure 1 includes a key cap 11 , a scissors-shaped connecting element 12 , an elastic rubber 13 , a switch circuit board 14 and a bottom plate 15 . The button cap 11 is used for pressing by the user, and is connected with the scissor-shaped connecting element 12 . The scissors-type connecting element 12 includes an inner frame 121 and an outer frame 122, which are connected to the keycap 11 and the bottom plate 15, wherein the inner frame 121 has an inner frame shaft 1211, and the outer frame 122 has an outer frame hole 1221, through which the inner frame The shaft 1211 passes through the hole 1221 of the outer frame to connect the inner frame 121 and the outer frame 122 so as to make the inner frame 121 rotate relative to the outer frame 122 . The switch circuit board 14 is arranged on the bottom plate 15, and the elastic rubber 13 is arranged between the key cap 11 and the switch circuit board 14, so that when the key cap 11 is pressed, the elastic rubber 13 is pushed against by the key cap 11 to deform , and trigger the switch circuit board 14 to generate a key signal. The assembly of each component of the key structure 1 is shown in FIG. 2 .

However, the elastic rubber 13 is made of rubber material. After a long period of use, the elastic rubber 13 is repeatedly pushed and deformed, and then returns to its original shape from the deformed state, so that the elastic rubber 13 made of rubber material deteriorates or is damaged. Instead, new elastic rubber must be replaced. It is not easy for the user to disassemble the key structure and replace the elastic rubber.

Therefore, there is a need for a key structure that does not need to use elastic rubber.

Contents of the invention

The main purpose of the present invention is to provide a key structure without elastic rubber.

In a preferred embodiment, the present invention provides a button structure including a bottom plate, a switch circuit board, a button cap and a frame. The switch circuit board is arranged on the bottom board and used to be triggered to generate a key signal. The button cap is located above the switch circuit board, and is used to move and trigger the switch circuit board after being touched. The button cap has a magnetic element, which is arranged on a key cap edge of the key cap. The magnetic element is used for generate a magnetic force. The frame is located above the switch circuit board and is in contact with the key cap, so as to limit the key cap from coming out of the frame. The frame has a magnetic coating, which is arranged on a frame edge of the frame and is located on the magnetic element. Underneath, the magnetic coating is used to contact the magnetic element in response to the magnetic force generated by the magnetic element. Wherein, when the key cap is pressed, the key cap moves to trigger the switch circuit board; and when the key cap is no longer pressed, the key cap moves toward the magnetic element due to the magnetic force, and is in contact with the magnetic element. The frame contacts.

In a preferred embodiment, the present invention also provides a button structure including a bottom plate, a switch circuit board, a button cap and a frame. The switch circuit board is arranged on the bottom board and used to be triggered to generate a key signal. The key cap is located above the switch circuit board, and is used for being pressed to move and trigger the switch circuit board. The key cap has a magnetic coating and is arranged on a key cap edge of the key cap. The frame is located above the switch circuit board and is in contact with the key cap, so as to limit the key cap from detaching from the frame. The frame has a magnetic element, which is arranged on a frame edge of the frame and is located on the magnetic coating Below, the magnetic element is used to generate a magnetic force. Wherein, when the key cap is pressed, the key cap moves to trigger the switch circuit board; and when the key cap is no longer pressed, the key cap moves toward the magnetic element due to the magnetic force, and is in contact with the magnetic element. The frame contacts.

Description of drawings

FIG. 1 is a structural exploded schematic diagram of an existing button structure.

FIG. 2 is a structural schematic diagram of an assembled existing button structure.

FIG. 3 is a schematic side view of the structure of the button structure in the first preferred embodiment of the present invention.

FIG. 4 is a schematic side view of the structure of the button structure being pressed in the first preferred embodiment of the present invention.

FIG. 5 is a schematic side view of the structure of the button structure in the second preferred embodiment of the present invention.

FIG. 6 is a schematic side view of the button structure in the third preferred embodiment of the present invention.

FIG. 7 is a structural schematic diagram of another viewing angle of the button structure in the third preferred embodiment of the present invention.

FIG. 8 is a schematic side view of the button structure of the present invention being pressed in the third preferred embodiment.

FIG. 9 is a schematic side view of the key structure in the fourth preferred embodiment of the present invention.

Wherein, the reference signs are explained as follows:

1, 2, 3, 4, 5: button structure

11, 22, 32, 42, 52: key caps

12: Scissors type connecting element

13: elastic rubber

14, 21, 31, 41, 51: switch circuit board

15, 20, 30, 40, 50: bottom plate

23, 33, 43, 53: frame

24, 34: Connecting elements

25, 44: Buffer

121: inner frame

122: inner frame

201, 301: the first fixed structure

202, 302: the second fixed structure

203: Upper surface of base plate

211: On the circuit board

212: isolation layer

213: lower circuit board

214: key switch

215: the upper surface of the upper circuit board

221, 331, 431, 521: Magnetic components

222, 322, 422, 522: trigger part

223, 323: The third fixed structure

224, 324: The fourth fixed structure

225, 325: button cap edge

226, 326, 426, 526: the lower surface of the key cap

231, 321, 421, 531: Magnetic coating

232, 332, 433, 532: Frame edge

241: The first frame body

242: The Second Body

415: Upper surface of switch circuit board

423: Inclined bump

424, 524: the edge of the first button cap

425: second button cap edge

432: Inclined guide slot

1211: inner frame shaft

2111: upper contact

2121: Isolation layer opening

2131: lower contact

2251, 3251: Top surface of key cap rim

2321, 3321, 4331, 5321: Lower surface of frame edge

4241, 5241: Upper surface of the first key cap edge

4321: First end of inclined channel

4322: Second end of sloped channel

H1, H1*: first height

H2, H2*: second height

Detailed ways

In view of the defects of the prior art, the present invention provides a key structure that can solve the problems of the prior art. Multiple key structures form a keyboard device, and the present invention is only described for a single key structure. Please refer to FIG. 3 , which is a schematic side view of the key structure in the first preferred embodiment of the present invention. The button structure 2 includes a bottom plate 20 , a switch circuit board 21 , a button cap 22 , a frame 23 , a connecting element 24 and a buffer member 25 . The bottom plate 20 is connected to the connection element 24 , and the bottom plate 20 includes a first fixing structure 201 and a second fixing structure 202 . The first fixing structure 201 and the second fixing structure 202 are disposed on an upper surface 203 of the bottom plate 20 . The switch circuit board 21 is disposed on the base plate 20 to be triggered by the keycap 22 to generate a key signal. The switch circuit board 21 includes an upper circuit board 211 , an isolation layer 212 and a lower circuit board 213 . The upper circuit board 211 has an upper contact 2111, the isolation layer 212 is located below the upper circuit board 211, and the isolation layer 212 has an isolation layer opening 2121 corresponding to the upper contact 2111, when the switch circuit board 21 is pressed, the corresponding The corresponding upper contact 2111 extends into the corresponding opening 2121 of the isolation layer. The lower circuit board 213 is located below the isolation layer 212 and has a lower contact 2131 corresponding to the upper contact 2111 to form a key switch 214 with the upper contact 2111 and the opening 2121 of the isolation layer. In this preferred embodiment, the switch circuit board 21 is a membrane switch circuit.

The key cap 22 is located above the switch circuit board 21 and is connected to the connection element 24, so as to be touched and moved to trigger the switch circuit board 21. The key cap 22 includes a plurality of magnetic elements 221, a trigger part 222, a third fixed structure 223 and a fourth fixing structure 224 . Each magnetic element 221 is disposed on an upper surface 2251 of a key cap edge 225 of the key cap 22 , and the magnetic element 221 is used to generate a magnetic force. The trigger part 222 is disposed on the lower surface 226 of the key cap 22 and is used for triggering the key switch 214 of the switch circuit board 21 to generate a key signal when the key cap 22 is pressed and moved. Both the third fixing structure 223 and the fourth fixing structure 224 are disposed on the lower surface 226 of the key cap 22 . In this preferred embodiment, the magnetic element 221 is a magnet, the trigger part 222 , the third fixing structure 223 and the fourth fixing structure 224 are integrally formed with the key cap 22 , and the key cap 22 is made of plastic material.

In Fig. 3, the frame 23 is located above the switch circuit board 21 and is in contact with the keycap edge 225 of the keycap 22 to limit the keycap 22 from coming out of the frame 23, the frame 23 has a plurality of magnetic coatings 231, each magnetic The coating 231 is disposed on the lower surface 2321 of a frame edge 232 of the frame 23 and is located above the corresponding magnetic element 221. The magnetic coating 231 is used to be attracted by the magnetic force generated by the magnetic element 221, and is compatible with the magnetic Element 221 contacts. The connection element 24 is located between the base plate 20 and the key cap 22 for connecting the base plate 20 and the key cap 22 and supporting the key cap 22 . The connection element 24 includes a first frame body 241 and a second frame body 242, the first end of the first frame body 241 is connected to the first fixing structure 201, and the second end of the first frame body 241 is connected to the fourth Fixed structure 224 . The second frame body 242 is used for combining with the first frame body 241, so that the connecting element 24 presents a cross state (as shown in FIG. 3 ) or a folded state (as shown in FIG. 4 ). One end is connected to the third fixing structure 223 , and the second end of the second frame body 242 is connected to the second fixing structure 202 . Thus, the connecting element 24 connects the button cap 22 and the base plate 20. In this preferred embodiment, the magnetic coating 231 forms a metal material on the lower surface 2321 of the frame edge 232 by coating, and the connecting element 24 is scissors. type connection elements.

The buffer member 25 is disposed on an upper surface 215 of the upper circuit board 211 of the switch circuit board 21 and is located below the trigger portion 222, for contacting with the trigger portion 222 to absorb an impact force generated by the trigger portion 222 to protect the switch. circuit board 21. In this preferred embodiment, the buffer member 25 is made of soft material. It should be noted that since the keycap 22 is fixed on the bottom plate 20 through the connecting element 24 , the connecting element 24 can limit the height of the keycap 22 . In addition, due to the configuration of the frame 23 , it can further limit the height of the keycap 22 by contacting the plurality of frame edges 232 with the plurality of keycap edges 225 . That is to say, when the connecting element 24 and the frame 23 are arranged in different ways, the stroke of the key cap 22 when pressed and the touch feeling felt by the user will change accordingly to meet the needs of various users. .

Next, the operation of the key structure 2 of the present invention will be described. Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 4 is a schematic side view of the key structure of the present invention being pressed in the first preferred embodiment. Fig. 3 shows the state that the key cap 22 is not pressed, at this time, the connecting element 24 is in a cross state, and the key cap 22 is located at a first height H1, and the key cap 22 is in contact with the frame 23, wherein the magnetic element 221 is magnetically adsorbed Coat 231. When the user touches the key cap 22, a pushing force applied to the key cap 22 is greater than the magnetic force, so that the key cap 22 breaks away from the frame 23 and moves toward the switch circuit board 21. At the same time, the connecting element 24 is changed from the cross state Change to the overlapping state, as shown in Figure 4. The trigger portion 222 on the key cap 22 moves downward to contact the buffer member 25 , and at the same time, the trigger portion 222 triggers the key switch 214 of the switch circuit board 21 to make the key switch 214 generate a key signal. On the other hand, the impact force generated by the trigger portion 222 is absorbed by the buffer member 25 to prevent the switch circuit board 21 from being damaged due to impact. At this time, the key cap 22 is located at a second height H2, and the second height H2 is lower than the first height H1.

When the user no longer touches the key cap 22 , the pushing force applied to the key cap 22 disappears, so that the magnetic force generated by the magnetic element 221 attracts the magnetic coating 231 on the frame 23 . Since the frame 23 is fixed and cannot move, the key cap 22 moves toward the direction of the magnetic coating 231 in response to the magnetic force, and moves until the key cap 22 contacts the frame 23, that is, the key cap 22 returns to the first height H1. location, as shown in Figure 3.

Furthermore, the present invention also provides a second preferred embodiment. Please refer to FIG. 5 , which is a schematic side view of the button structure in the second preferred embodiment of the present invention. The key structure 3 includes a base plate 30 , a switch circuit board 31 , a key cap 32 , a frame 33 and a connecting element 34 . The base plate 30 includes a first fixing structure 301 and a second fixing structure 302 . The key cap 32 includes a plurality of magnetic coatings 321 , a trigger portion 322 , a third fixing structure 323 and a fourth fixing structure 324 , and the frame 33 has a plurality of magnetic elements 331 disposed on a plurality of frame edges 332 . The structure of the key structure 3 of this preferred embodiment is substantially the same as that of the key structure 2 of the aforementioned first preferred embodiment, and the similarities will not be further described. There are two differences between the key structure 3 of this preferred embodiment and the key structure 2 of the first preferred embodiment. First, the key structure 3 is not provided with a buffer made of soft material. In a preferred embodiment, the trigger part 322 is disposed on the lower surface 326 of the button cap 32, and the trigger part 322 is made of a soft material, so that an impact force generated when the trigger part 322 contacts the switch circuit board 31 is triggered. part 322 to protect the switch circuit board 31.

Second, the plurality of magnetic coatings 321 are disposed on an upper surface 3251 of the key cap edge 325 of the key cap 32 , and the metal material is formed on the upper surface 3251 of the plurality of key cap edges 325 by coating. On the other hand, the frame 33 has a plurality of magnetic elements 331 disposed on the lower surface 3321 of the plurality of frame edges 332 of the frame 33 and located above the corresponding magnetic coating 321 . As for the operation of the key structure 3 of this preferred embodiment is also substantially the same as that of the key structure 2 of the first preferred embodiment, so no further description is given.

Moreover, the present invention also provides a third preferred embodiment. Please refer to FIG. 6 , which is a schematic side view of the button structure in the third preferred embodiment of the present invention. The key structure 4 includes a bottom plate 40 , a switch circuit board 41 , a key cap 42 , a frame 43 and a buffer 44 . The switch circuit board 41 is arranged on the base plate 40, and is used to be triggered by the button cap 42 to generate a key signal. The switch circuit board 41 includes an upper circuit board, an isolation layer and a lower circuit board, and the switch in this preferred embodiment The structure and operation of the circuit board 41 are the same as those of the switch circuit board 21 in the first preferred embodiment, so no further description is given.

Please refer to FIG. 6 and FIG. 7 at the same time. FIG. 7 is a structural schematic view of another viewing angle of the button structure in the third preferred embodiment of the present invention. The key cap 42 is supported by the frame 43 and is located above the switch circuit board 41 for being pressed to move and trigger the switch circuit board 41. The key cap 42 includes a plurality of magnetic coatings 421, a trigger portion 422 and a plurality of inclined protrusions. Block 423. Each magnetic coating 421 is disposed on an upper surface 4241 of a first key cap edge 424 of the key cap 42, and the trigger portion 422 is disposed on the lower surface 426 of the key cap 42 for pressing the key cap 42 to trigger When moving, the switch circuit board 41 is triggered to generate a key signal. Each inclined protrusion 423 is arranged on the edge 425 of the second button cap. In this preferred embodiment, the magnetic coating 421 is formed on the upper surface 4241 of the first button cap edge 424 by coating the metal material, and The trigger portion 422 and the plurality of inclined protrusions 423 are integrally formed with the key cap 42 , and the key cap 42 is made of plastic material.

The frame 43 is located above the switch circuit board 41 and is in contact with a plurality of first key cap edges 424 of the key cap 42 to limit the key cap 42 from coming out of the frame 43. The frame 43 includes a plurality of magnetic elements 431 and a plurality of inclined guides. The groove 432, each magnetic element 431 is disposed on the lower surface 4331 of a frame edge 433 of the frame 43 and is located below the corresponding magnetic coating 421, and the magnetic element 431 is used to generate a magnetic force. A plurality of inclined guide grooves 432 are arranged on a plurality of side walls 434 of the frame 43, and each inclined guide groove 432 corresponds to an inclined protrusion 423, so that the inclined protrusion 423 extends into the inclined guide groove 432 and is aligned with the inclined guide groove. 432 , so that the frame 43 can support the key cap 42 above the switch circuit board 41 . In this preferred embodiment, the magnetic element 431 is a magnet.

The buffer member 44 is disposed on an upper surface 415 of the switch circuit board 41 and below the trigger portion 422 for contacting the trigger portion 422 to absorb an impact force generated by the trigger portion 422 to protect the switch circuit board 41 . In this preferred embodiment, the buffer member 44 is made of soft material.

Next, the operation of the key structure 4 of the present invention will be described. Please refer to FIGS. 6 to 8 at the same time. FIG. 8 is a schematic side view of the button structure of the present invention being pressed in the second preferred embodiment. 6 and 7 show the state that the key cap 42 is not pressed, and the inclined protrusion 423 of the key cap 42 is in contact with a first end 4321 of the inclined guide groove 432, so that the key cap 42 is located at a first height H1* , wherein the magnetic element 431 absorbs the magnetic coating 421 . When the user presses the key cap 42, a pushing force applied to the key cap 42 is greater than the magnetic force, so that the first key cap edge 424 of the key cap 42 is separated from the frame edge 433 of the frame 43, and is positioned on the second key cap. The inclined protrusion 423 on the edge 425 slides in the corresponding inclined guide groove 432 . The trigger portion 422 on the key cap 42 moves downward to contact the buffer member 44 , and at the same time, the trigger portion 422 triggers the switch circuit board 41 to generate a key signal. On the other hand, the impact force generated by the trigger portion 422 is absorbed by the buffer member 44 to prevent the switch circuit board 41 from being damaged due to impact. At this time, the keycap 42 is located at a second height H2*, as shown in FIG. 8 . Wherein the second height H2* is lower than the first height H1*. The inclined protrusion 423 is in contact with a second end 4322 of the inclined guide groove 432 .

When the user no longer touches the key cap 42 , the pushing force applied to the key cap 42 disappears, so that the magnetic force generated by the magnetic element 431 attracts the magnetic coating 421 on the key cap 42 . Therefore, the key cap 42 moves toward the direction of the magnetic element 431 due to the magnetic force, and moves until the first key cap edge 424 of the key cap 42 contacts the frame edge 433 of the frame 43, that is, the key cap 42 returns to the first height. The position of H1* is shown in Figure 6.

It should be noted that the key structure 4 of this preferred embodiment is not provided with connecting elements, that is, the key cap 42 is not fixed on the bottom plate 40 . The key structure 4 of this preferred embodiment supports the key cap 42 above the switch circuit board 41 through a plurality of inclined guide grooves 432 of the frame 43, and the plurality of frame edges 431 of the frame 43 are positioned on the plurality of first key caps 42. A structure above the edge 424 of the key cap is used to prevent the key cap 42 from coming out of the frame 43 , so that the key cap 42 can be fixed in the frame 43 . During the pressing process of the keycap 42, since the plurality of inclined guide grooves 432 support the plurality of inclined protrusions 423 of the keycap 42, when the user presses the keycap 42, the plurality of inclined guide grooves 432 continue to align with the inclined protrusions. The block 423 is in contact to provide a touch and pressure feel. The touch and pressure feel felt by the user is close to the touch and pressure feel provided by the elastic rubber. Therefore, when the user operates the button structure of the present invention, he can feel the familiar touch and pressure feel. , without feeling unfamiliar.

In addition, the present invention also provides a fourth preferred embodiment. Please refer to FIG. 9 , which is a schematic side view of the button structure in the second preferred embodiment of the present invention. The key structure 5 includes a base plate 50 , a switch circuit board 51 , a key cap 52 and a frame 53 . The key cap 52 includes a plurality of magnetic elements 521, a trigger portion 522 and a plurality of inclined protrusions (not shown in the figure), and the frame 53 includes a plurality of magnetic coatings 531 and a plurality of inclined guide grooves (not shown in the figure). ). The structure of the key structure 5 of this preferred embodiment is substantially the same as that of the key structure 4 of the third preferred embodiment, and the similarities will not be further described. As for the button structure 5 of this preferred embodiment and the button structure 4 of the third preferred embodiment, there are two differences. First, the button structure 5 is not provided with a buffer made of soft material. In a preferred embodiment, the trigger part 522 is disposed on the lower surface 526 of the button cap 52, and the trigger part 522 is made of a soft material, so that an impact force generated when the trigger part 522 contacts the switch circuit board 51 is triggered. part 522 to protect the switch circuit board 51.

Second, the plurality of magnetic elements 521 are disposed on an upper surface 5241 of the first key cap edge 524 of the key cap 52 . On the other hand, the frame 53 has a plurality of magnetic coatings 531, which are disposed on the lower surface 5321 of the plurality of frame edges 532 of the frame 53 and above the corresponding magnetic elements 521, wherein the magnetic coatings 531 combine metal materials with Coating forms are formed on the lower surface 5321 of the plurality of frame edges 532 . As for the operation of the key structure 5 of this preferred embodiment is also substantially the same as that of the key structure 4 of the third preferred embodiment, so no further description is given.

According to the above preferred embodiments, the button structure of the present invention is not provided with easily damaged elastic rubber, and a trigger portion for triggering the switch circuit board is provided on the lower surface of the button cap. And the magnetic element is set on the key cap, and the magnetic coating corresponding to the magnetic element is set on the frame, or the magnetic element is set on the frame, and the magnetic coating corresponding to the magnetic element is set on the key cap, through the magnetic element The generated magnetic force performs the reset action after the keycap is pressed, so that the keycap returns to the position before being pressed. Therefore, the button structure of the present invention will not damage the elastic rubber, and the user does not need to replace the elastic rubber.

Furthermore, because the structure of the multiple inclined guide grooves in the frame and the multiple inclined protrusions of the key cap cooperates with the position configuration of the magnetic element and the magnetic coating, it can provide a touch feeling close to that provided by elastic rubber, so that user action. On the other hand, when the key structure of the present invention is pressed, the key cap moves up and down, or moves up and down obliquely. The magnetic element and the magnetic coating adopt a structure that is arranged up and down each other, so that the distance between the magnetic element and the magnetic coating is relatively close, and the direction of its arrangement is the same as or close to the direction of movement of the keycap. Therefore, the magnetic force generated by the magnetic element The force can provide a better adsorption effect, so as to facilitate the movement of the key cap.

In addition, since the button structure of the present invention only needs to set the magnetic element on one of the key cap or the frame, it is only necessary to set a space for accommodating the magnetic element on a single element (such as the key cap), and to set a space for the magnetic element on the other element (such as the key cap). That is, the magnetic coating is formed on the frame by coating, so the button structure of the present invention can reduce the manufacturing cost.

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

Claims (12)

1. a press-key structure, comprising:

One base plate;

One switching circuit board, is arranged on this base plate, produces a push button signalling in order to be triggered;

One button cap, is positioned at the top of this switching circuit board, and in order to touched and mobile and trigger this switching circuit board, this button cap has a magnetic element, is arranged on a button cap edge of this button cap, and this magnetic element is in order to produce a magnetive attraction; And

One framework, be positioned at the top of this switching circuit board and contact with this button cap, deviate from by this framework in order to limit this button cap, this framework has a magnetisable coating, the frame edge being arranged at this framework is positioned at the below of this magnetic element, and this magnetisable coating is in order to because of should this magnetive attraction of producing of magnetic element and contacting with this magnetic element; Wherein when this button cap is touched, this button cap moves and triggers this switching circuit board; And when this button cap is no longer touched, this button cap because of should magnetive attraction and moving toward this magnetic element, and with this contact therewith.

2. press-key structure as claimed in claim 1, wherein this button cap comprises a trigger unit, is arranged on a lower surface of this button cap, be used to this button cap touched and mobile time, trigger this switching circuit board, to produce this push button signalling.

3. press-key structure as claimed in claim 2, wherein this switching circuit board also comprises a bolster, the upper surface being arranged at this switching circuit board is positioned at the below of this trigger unit, absorbs the impact that this trigger unit produces in order to contact with this trigger unit, to protect this switching circuit board; Wherein this trigger unit and this button cap one-body molded, and this bolster is with made by a soft materials.

4. press-key structure as claimed in claim 2, wherein this trigger unit is with made by a soft materials, the impact produced when this trigger unit is contacted with this switching circuit board absorb by this trigger unit, and protect this switching circuit board.

5. press-key structure as claimed in claim 1, wherein this framework also comprises an inclined guide groove, be arranged on a sidewall of this framework, and this button cap also comprises a declining lug, be arranged on another button cap edge of this button cap, in order to be inserted in this inclined guide groove and to contact with this inclined guide groove; Wherein when this button cap is not touched, this inclined guide groove supports this declining lug, makes this button cap be positioned at one first height; And when this button cap is touched, this declining lug slides in this inclined guide groove, make this button cap be positioned at lower than this first height one second height.

6. press-key structure as claimed in claim 1, also comprises a Connection Element, between this base plate and this button cap, in order to connect this base plate and this button cap and to support this button cap; When this button cap is not touched, this Connection Element is in a crossing condition, and this button cap is positioned at one first height; And when this button cap is touched, this Connection Element changes to one by this crossing condition and to coincide state, and this button cap is positioned at one second height, and wherein this second height is lower than this first height.

7. a press-key structure, comprising:

One base plate;

One switching circuit board, is arranged on this base plate, produces a push button signalling in order to be triggered;

One button cap, is positioned at the top of this switching circuit board, and in order to touched and mobile and trigger this switching circuit board, this button cap has a magnetisable coating, is arranged on a button cap edge of this button cap; And

One framework, be positioned at the top of this switching circuit board and contact with this button cap, deviate from by this framework in order to limit this button cap, this framework has a magnetic element, the frame edge being arranged at this framework is positioned at the below of this magnetisable coating, and this magnetic element is in order to produce a magnetive attraction; Wherein when this button cap is touched, this button cap moves and triggers this switching circuit board; And when this button cap is no longer touched, this button cap because of should magnetive attraction and moving toward this magnetic element, and with this contact therewith.

8. press-key structure as claimed in claim 7, wherein this button cap comprises a trigger unit, is arranged on a lower surface of this button cap, be used to this button cap touched and mobile time, trigger this switching circuit board, to produce this push button signalling.

9. press-key structure as claimed in claim 8, wherein this switching circuit board also comprises a bolster, the upper surface being arranged at this switching circuit board is positioned at the below of this trigger unit, absorbs the impact that this trigger unit produces in order to contact with this trigger unit, to protect this switching circuit board; Wherein this trigger unit system and this button cap one-body molded, and this bolster system is with made by a soft materials.

10. press-key structure as claimed in claim 8, wherein this trigger unit is with made by a soft materials, the impact produced when this trigger unit is contacted with this switching circuit board absorb by this trigger unit, and protect this switching circuit board.

11. press-key structures as claimed in claim 7, wherein this framework also comprises an inclined guide groove, be arranged on a sidewall of this framework, and this button cap also comprises a declining lug, be arranged on another button cap edge of this button cap, in order to be inserted in this inclined guide groove and to contact with this inclined guide groove; Wherein when this button cap is not touched, this inclined guide groove supports this declining lug, makes this button cap be positioned at one first height; And when this button cap is touched, this declining lug slides in this inclined guide groove, make this button cap be positioned at lower than this first height one second height.

12. press-key structures as claimed in claim 7, also comprise a Connection Element, are positioned between this base plate and this button cap, in order to connect this base plate and this button cap and to support this button cap; When this button cap is not touched, this Connection Element is in a crossing condition, and this button cap is positioned at one first height; And when this button cap is touched, this Connection Element changes to one by this crossing condition and to coincide state, and this button cap is positioned at one second height, and wherein this second height is lower than this first height.