CN206379282U - Liftable keyboard structure - Google Patents

Abstract

A kind of liftable keyboard structure, including：Multiple buttons, film switch circuit layer, delivery valve seat and pump installation；Each button has button cap and flexible member；Film switch circuit layer has multiple air inlets and exhaust outlet, and air inlet is set corresponding to flexible member；Delivery valve seat includes：The entrance that is communicated in air inlet, the outlet for being communicated in exhaust outlet and discharge chamber, discharge chamber are connected with the pump installation；When the inductor of the base of portable computer senses that upper lid is close, make pump installation start, with to multiple exhaust chamber pumpings, make the entrance of air inlet and delivery valve seat of the gas in flexible member through film switch circuit layer, exhaust outlet is flow to by outlet again and discharged, extracted out by flexible member because of gas and produce compressive deformation, driven each button cap to bottom offset, reduce the height of button.

Description

Liftable keyboard structure

【Technical field】

This case be on a kind of keyboard structure, it is espespecially a kind of that there is delivery valve seat and pump installation, and liftable keyboard knot Structure.

【Background technology】

In the information age now, computer has turned into electronics and IT products indispensable during everyone lives.With making User is most directly related, is exactly the peripheral input device of computer, including：Mouse, keyboard, handwriting pad ... etc., wherein, keyboard dress Put to be available for users to and directly key in word and symbol, and can pass through keyboard and writing and compiling for a variety of secretarial documents is carried out in computer Operation is collected, is all to need to configure keyboard with almost all of computer, so that user is easy to input word and symbol, obvious keyboard Importance.

Referring to Fig. 1, it is to see schematic diagram outside known keyboard.As illustrated, keyboard 1 applies to notes type electricity Brain, and with bottom plate 11 and multiple buttons 10, the configuration mode of these multiple buttons 10 can have because of the design of Ge Jia manufacturers Institute is different, and so it, which is mainly, corresponds respectively to different English/Chinese character, numeral and symbols etc., in order to for user with Finger presses these buttons 10, and then to trigger corresponding signal, and its corresponding function can be performed in computer.

Referring to Fig. 2, it is the cross-sectional view of known keyboard.As illustrated, keyboard 1 has bottom plate 11 and multiple Button 10, each of which button 10 is made up of button cap 101, scissor connecting element 102 and flexible member 103, scissors Formula connecting element 102 is connected to button cap 101, and flexible member 103 then corresponds to button cap 101 and set.The bottom plate 11 of button 1 Then sequentially include the structures such as film switch circuit 12, distance piece 13, supporting plate 14 and lower house 15, but be not limited, wherein Film switch circuit 12 is to include wiring board 121, separation layer 122 and lower wiring board 123, and upper wiring board 121, separation layer 122 and lower wiring board 123 be all with made by light transmissive material, but to be also not limited.And, in film switch circuit 12 With more multiple key switches 124, and these key switches 124 correspond to the center of each flexible member 103, be with When the button cap 101 of user's pressing keys 10, then can produce downward stress, and make scissor connecting element 102 with Stretching is swung, and makes the downward pressuring elastic element 103 of button cap 101, flexible member 103 is produced deformation by stress, and then Film can be pressed and close the border the key switch 124 of circuit 12, and export the push button signalling corresponding to the button 10.

Again as shown in Fig. 2 the supporting plate 14 of bottom plate 11 is correspondingly arranged under film switch circuit 12, for support Film switch circuit 12, lower house 15 is then correspondingly arranged under supporting plate 14, to be used as protection supporting plate 14 and thin film switch Circuit 12 is used.In some known technologies, distance piece 13 is then arranged on film switch circuit 12, and is correspondingly arranged in every Between one button 10, and two it is adjacent between be with accommodation space 131, with for each corresponding button 10 between spacing body 13 Scissor connecting element 102 and flexible member 103 be disposed therein.Therefore as illustrated, the button 10 of known keyboard 1 Button cap 101 can be higher than distance piece 13 because of the support of scissor connecting element 102 and flexible member 103, and work as user , then can be as it was previously stated, make scissor connecting element 102 swing strain stretch when pressing its button cap 101, and flexible member 103 Correspond to downward deformation and trigger key switch 124, and exportable corresponding push button signalling, now button cap 101 can be because of user Reduced downwards by compression height so that button cap 101 is sunk down into the accommodation space 131 of distance piece 13；However, working as makes User stop press the button cap 101 when, flexible member 103 then can the upward deformation in response to the elastic restoring force, and then stopping Trigger key switch 124, you can stop exporting the push button signalling, now button cap 101 can be promoted because of the deformation of flexible member 103 And reset is shifted up, scissor connecting element 102 can also be driven by button cap 101 and reply its original state, therefore button Cap 101 eventually returns back to the position that it is higher than distance piece 13.

However, with the slimming designer trends that the electronic installation of society's pursuit now is light, thin, be easy to carry about with one, it is known that key Disk 1 can be difficult to reduce its whole height because the button cap 101 has certain altitude, and then cause to be difficult to subtract overall volume It is small, and cause product heaviness, be difficult to lightening missing.Therefore, above-mentioned known technology missing can be improved by how developing one kind, can Improve keyboard and button design, and then reach the liftable keyboard structure of frivolous portable purpose, actually compel to be essential at present The problem of solving.

【Utility model content】

The main purpose of this case is to provide a kind of liftable keyboard structure, through through multiple delivery valve seats and pump The start of device, to be evacuated to the flexible member of multiple buttons simultaneously, causes flexible member to produce deformation and compress downwards, To drive button cap to bottom offset, and then the height of multiple buttons can be reduced, that is, reduce the overall thick of liftable keyboard structure Degree, so that portable computer during closing, can more reduce integral thickness in upper lid is entire, and reaches the purpose of lightening design.

For up to above-mentioned purpose, a broader aspect of implementing of this case is a kind of liftable keyboard structure of offer, it is adaptable to One portable computer, the portable computer includes a Shang Gai and a base, and the base has an inductor, the liftable keyboard knot Structure includes：Multiple buttons, each button has a button cap and a flexible member, and the flexible member corresponds to the button cap And set；One film switch circuit layer, with multiple air inlets and multiple exhaust outlets, each air inlet corresponds to the button The flexible member and set；Multiple delivery valve seats, each delivery valve seat is correspondingly arranged in the film switch circuit layer and right Under the button answered, and each delivery valve seat includes：One entrance, an outlet and a discharge chamber, it is right that the entrance is communicated in its The air inlet for the film switch circuit layer answered, the outlet is in the exhaust of its corresponding film switch circuit layer Mouthful, and each discharge chamber is connected with the discharge chamber of the adjacent delivery valve seat；And a pump installation, with the plurality of exhaust The discharge chamber of valve seat is connected；Wherein, when the inductor of the base of the portable computer, which is sensed, covers close on this, The pump installation is set to be evacuated start, with to the plurality of exhaust chamber pumping, so that the gas in the flexible member in each button The air inlet of the film switch circuit layer and the entrance of the delivery valve seat are sequentially flowed through, into the delivery valve seat, then by The outlet flow to the exhaust outlet of the film switch circuit layer and discharged, and is extracted out by the flexible member because of gas and produces compressed shape Become, each button cap is driven to bottom offset, to reduce the height of each button.

In one embodiment, each button further includes a scissor element, and the scissor element is connected to the button Cap and the flexible member, to support and drive the button cap displacement.

In one embodiment, the delivery valve seat is further included：

One exit plate, with the entrance, an entrance temporary storage cavity, the outlet, an outlet temporary storage cavity and a communication channel, the entrance Side be connected with the air inlet of the film switch circuit layer, opposite side is then communicated in the entrance temporary storage cavity, the outlet Side is connected with the exhaust outlet of the film switch circuit layer, and opposite side is then communicated in the outlet temporary storage cavity, and the communication channel connects Pass through between the entrance temporary storage cavity and the outlet temporary storage cavity；

One gas collection plate, is arranged under the exit plate；And

One valve sheet, is arranged between the exit plate and the gas collection plate, and with a valve opening；

Wherein, when the inductor of the base of the portable computer, which is sensed, covers close on this, then pump installation is caused Start, the pump installation is connected with the discharge chamber of the plurality of delivery valve seat, when the pump installation is evacuated start, the plurality of exhaust Gas in valve seat can be sent to the pump installation by the plurality of discharge chamber being connected, and then make gas flow through this by the entrance to enter Mouth temporary storage cavity, the communication channel, the outlet temporary storage cavity, and the delivery valve seat is flowed out from the outlet, and by the film switch circuit layer The exhaust outlet discharge.

In one embodiment, the gas collection plate of the delivery valve seat further includes one first through hole and one second through hole, should One end of first through hole and the second through hole is connected with the gas collection chamber, the other end then respectively with the entrance temporary storage cavity and should Outlet temporary storage cavity is connected.

In one embodiment, the delivery valve seat further includes multiple convex portion structures, and the therein one convex portion structure setting is in this The one end of outlet, another convex portion structure is disposed on the side of first through hole, to when start with the valve sheet Correspondence is supported.

In one embodiment, the inductor of the base is an electromagnetic inductor, and lid has more a magnetic element on this, Distance of the electromagnetic inductor to sense the magnetic element, and produce an electromagnetic signal.

【Brief description of the drawings】

Fig. 1 is the schematic appearance of known keyboard.

Fig. 2 is the cross-sectional view of known keyboard.

Fig. 3 A, Fig. 3 B are the lifting illustrative view of the liftable keyboard structure of this case preferred embodiment.

Fig. 4 A are the multiple buttons and the cross-section structure of delivery valve seat of the liftable keyboard structure of this case preferred embodiment Schematic diagram.

Fig. 4 B are the multiple buttons and the lifting illustrative view of delivery valve seat of the liftable keyboard structure shown in Fig. 4 A.

【Symbol description】

1：Keyboard

10：Button

101：Button cap

102：Scissor connecting element

103：Flexible member

11：Bottom plate

12：Film switch circuit

121：Upper wiring board

122：Separation layer

123：Lower wiring board

124：Key switch

13：Distance piece

131：Accommodation space

14：Supporting plate

15：Lower house

2：Portable computer

2a：Upper lid

2a1：Magnetic element

2b：Base

2b1：Inductor

20：Liftable keyboard structure

21、21’、21”：Button

210：Button cap

211：Scissor element

212：Flexible member

212a：Cavity

212b：Opening

22：Film switch circuit layer

221、221”、221”：Air inlet

222、222’、222”：Exhaust outlet

23、23’、23”：Delivery valve seat

230：Exit plate

230a：Entrance

230b：Outlet

230c：Entrance temporary storage cavity

230d：Export temporary storage cavity

230e：Communication channel

230f、232c：Convex portion structure

231：Valve sheet

231a：Valve opening

232：Gas collection plate

232a：First through hole

232b：Second through hole

24：Pump installation

240、240’、240”：Discharge chamber

h：Shift length

【Embodiment】

Embodying some exemplary embodiments of this pattern characteristics and advantage will in detail describe in the explanation of back segment.It should be understood that This case can have various changes in different aspects, and it does not all depart from the scope of this case, and explanation therein and diagram Inherently it is illustrated as being used, and nand architecture is in limitation this case.

Fig. 3 A, Fig. 3 B are referred to, it is the lifting illustrative view of the keyboard for the preferred embodiment of this case first.As schemed Show, the liftable keyboard structure 20 of this case is applied in portable computer 2, for example：Notebook computer, palm type electronic dress Put or other portable electronic devices in, by taking the present embodiment as an example, portable computer 2 be can be but be not limited to notes type electricity Brain.In the present embodiment, there is portable computer 2 upper lid 2a and base 2b, base 2b to be can be but not be limited to a box body structure, Circuit board and electronic component to be installed with liftable keyboard structure 20 and its inside etc., upper lid 2a is then corresponded to and is covered in base On 2b, to protect base 2b liftable keyboard structure 20 and its circuit board and electronic component of inside, in order to beneficial to user It is easy to carry and uses.Wherein, liftable keyboard structure 20 includes multiple buttons 21,21 ', 21 ", right the plurality of button 21, 21 ', 21 " quantity and configuration mode is can to appoint according to situation is actually applied and apply change, not with the embodiment shown in this case It is limited.

Set in some embodiments, in base 2b an inductor 2b1, inductor 2b1 be can for electromagnetic inductor or It is optical sensor, is not limited, senses whether upper lid 2a approaches and be covered on base 2b, for example, when Inductor 2b1 is electronic inductor, for example：Hall sensor, then also have corresponding magnetic element 2a1 on upper lid 2a, Consequently, it is possible to as shown in Fig. 3 A, Fig. 3 B, the inductor 2b1 on base 2b can then sense on magnetic element 2a1 on lid 2a Distance, when upper lid 2a is not covered in as shown in (a) state, on base 2b, then because upper lid 2a magnetic element 2a1 is the bottom of apart from Inductor 2b1 on seat 2b is that will not sense magnetic element 2a1 with inductor 2b1, and will not produce coherent signal farther out. However, when upper lid 2a is in rotary course, and upper lid 2a is positioned at a special angle, now magnetic element 2a1 and inductor 2b1 it Between distance reach that a particular value, i.e. inductor 2b1 sense magnetic element 2a1 presence, thus produce electromagnetic signal, triggering The pumping start of delivery valve seat 23 (as shown in Figure 4 A), and then make multiple buttons 21,21 ', 21 " of liftable keyboard structure 20 Height is reduced to bottom offset, and lid 2a is downwards covered on base 2b as shown in (b) state, and due to liftable Keyboard structure 20 height reduction, and then the integral thickness of portable computer 2 can be reduced so that portable computer 2 is more reachable Into light, thin, portable purpose.

Fig. 4 A are referred to, it is the cross-section structure signal of the multiple buttons and delivery valve seat for liftable keyboard structure Figure.As illustrated, the liftable keyboard structure 20 of the present embodiment includes multiple buttons 21,21 ', 21 ", film switch circuit layer 22nd, the structure such as multiple delivery valve seats 23,23 ', 23 " and a pump installation 24, and the plurality of button 21,21 ', 21 ", thin film switch Circuit layer 22, multiple delivery valve seats 23,23 ', 23 " and a pump installation 24 are correspondingly arranged in the base 2b of portable computer 2 Within.And, in the present embodiment, multiple buttons 21,21 ', 21 " are to adopt to arrange in array fashion, right the plurality of button 21, 21 ', 21 " quantity and configuration mode can appoint according to situation is actually applied and apply change, be not limited thereto.And it can be seen that Each button 21,21 ', 21 " be respectively provided with its corresponding film switch circuit layer 22 and corresponding delivery valve seat 23,23 ', The structures such as 23 ".And, in the present embodiment, liftable keyboard structure 20 has more pump installation 24, and the pump installation 24 is simultaneously It is serially connected with the delivery valve seat 23,23 ', 23 ".

It please continue refering to Fig. 4 A, for convenience of description, explanation is with button 21, film switch circuit layer 22 and its right below The delivery valve seat 23 answered illustratively is illustrated, and other all buttons 21 ', 21 ", delivery valve seat 23 ', 23 " are modular Design, therefore it is with identical structure and configuration mode.As illustrated, button 21 has button cap 210, scissor element The structure such as 211 and flexible member 212, wherein button cap 210 be for the lid-like of a ㄇ fonts, and its be can be by a plastics material Matter is constituted, but is not limited, and scissor element 211 is to be connected with button cap 210 and flexible member 212 is connected, to prop up Support and drive button cap 210.Flexible member 212 is correspondingly arranged under button cap 210, in some embodiments, in initial State, flexible member 212 is not contacted with button cap 210, but in other embodiments, flexible member 212 in original state also Can be inconsistent with button cap 210, its set-up mode can be adjusted according to actually situation is applied, and be not limited thereto.And, The kenel of flexible member 212 is that for a hollow cap-like structure, it is can be made up of flexible material, for example：Rubber, But it is not limited, and there is cavity 212a in it, cavity 212a bottom has opening 212b, the gas inside cavity 212a When body is pulled out, then flexible member 212 can produce compressive deformation, so can pass through scissor element 211 drive button cap 210 to Bottom offset start, and then reduce the height of button 21.

Please again simultaneously refering to Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 4 B, as shown in Figure 4 A, the lower section of button 21 is sequentially to be correspondingly arranged Film switch circuit layer 22 and delivery valve seat 23, wherein film switch circuit layer 22 have multiple air inlets 221 and multiple rows Gas port 222, in some embodiments, each air inlet 221 is can be the hatch frame of ring-type, but is not limited, and often One air inlet 221 both corresponds to the cavity 212a of the flexible member 212 of button 21 opening 212b and set, so that air inlet 221 can pass through opening 212b and be connected with cavity 212a.Also, in the present embodiment, delivery valve seat 23 is sequentially by exit plate 230th, valve sheet 231, gas collection plate 232 and discharge chamber 240 are constituted.Wherein, exit plate 230 have entrance 230a, outlet 230b, Entrance temporary storage cavity 230c, outlet temporary storage cavity 230d and communication channel 230e, entrance 230a side and film switch circuit layer 22 Air inlet 221 be connected, opposite side is then communicated in entrance temporary storage cavity 230c, and exports 230b side and film switch circuit The exhaust outlet 222 of layer 22 is connected, and opposite side is then communicated in outlet temporary storage cavity 230d, wherein, entrance temporary storage cavity 230c and outlet Temporary storage cavity 230d is to temporarily storage gas, and communication channel 230e is to be communicated in entrance temporary storage cavity 230c and outlet temporary storage cavity Between 230d, to supplied gas circulation.

In the present embodiment, outlet 230b end can further set up convex portion structure 230f, example formed by a protrusion It such as can be but not be limited to cylindrical structure, but be not limited.And, valve sheet 231 has more a valve opening 231a, wherein valve opening 231a is corresponding with entrance 230a and entrance temporary storage cavity 230c.There is gas collection plate 232 first through hole 232a and second to run through Hole 232b, wherein the first through hole 232a and the second through hole 232b one end are connected with discharge chamber 240, the other end then divides It is not connected with entrance temporary storage cavity 230c and outlet temporary storage cavity 230d.And, it is being adjacent at the first through hole 232 further A convex portion structure 232c is set up, for example, can be but not be limited to a cylindrical structure, and it is corresponding with the valve opening 231a of valve sheet 231 Set.Therefore being that its valve opening 231a is corresponded into collection when valve sheet 231 and exit plate 230 and the positioning of gas collection plate 232 are assembled The convex portion structure 232c of gas plate 232 and be correspondingly arranged, by this single valve opening 231a design, so that gas can be in response to its pressure Purpose that is poor and reaching one-way flow.

And, in the present embodiment, each delivery valve seat 23,23 ', 23 " respectively have an interconnected discharge chamber 240, 240 ', 240 ", the discharge chamber 240 for implying that delivery valve seat 23 is connected with the discharge chamber 240 ' of adjacent delivery valve seat 23 ', row The discharge chamber 240 ' of air valve seat 23 ' is then connected with the discharge chamber 240,240 " of adjacent delivery valve seat 23 and 23 ", and another row One end of discharge chamber 240 " of air valve seat 23 " is connected with the discharge chamber 240 ' of adjacent delivery valve seat 23 ', the other end then with it is another Pump installation 24 is connected.This right delivery valve seat 23,23 ', 23 " for only illustrating and illustrating only to illustrate this case is gone here and there with pump installation 24 The mode connect, it is set and the mode of concatenation is can to appoint according to situation is actually applied and apply change, is not limited thereto.

Please refer to Fig. 4 A and Fig. 4 B, as shown in Figure 4 A, when 24 non-start of pump installation, gas can be by discharge chamber 240 Into in delivery valve seat 23, and it is temporary into entrance via the first through hole 232b and the second through hole 232c of gas collection plate 232 It is can produce pressure difference because gas is constantly inputted from discharge chamber 240 now in chamber 230c and outlet temporary storage cavity 230d Valve sheet 231 is caused to push up, and the valve opening 231a on Open valve piece 231, and gas can be made to be flowed into from valve opening 231a In entrance temporary storage cavity 230c, then flexible member 212 is sent to by air inlets 221 of the entrance 230a through film switch circuit layer 22 Within cavity 212a, therefore flexible member 212 can be made to maintain the kenel of script, and scissor element 211 is supported button cap 210, To maintain the height of button 21, used for user's pressing.Now, it is with valve sheet because valve sheet 231 is upward deformation 231 opposite side can then be resisted against on the convex portion structure 230f of exit plate 230, and then close outlet 230b, i.e. delivery valve seat 23 Interior gas can not be delivered to the exhaust outlet 222 of film switch circuit layer 22 by outlet 230b, therefore without gas discharge.

However, after pump installation 24 receives the electromagnetic signal of inductor 2b1 transmission, then pump installation 24 be can be in response to the electromagnetism Signal and start start, and then delivery valve seat 23 is evacuated, now the gas inside delivery valve seat 23 can be by being connected Discharge chamber 240 and be sent to pump installation 24, and then produce pressure difference, and cause gas by the first through hole 232a of gas collection plate 232 And second through hole 232b flow into gas collection chamber 232a, and make the downward start therewith of valve sheet 231, therefore the meeting of valve sheet 231 It is resisted against convex portion structure 232d downwards, and closes valve opening 231c, be i.e. gas in entrance temporary storage cavity 230c will not be flowed downwardly in counter current flow； Meanwhile, the valve sheet 231 of opposite side also can start downwards when, and then the outlet 230b and outlet temporary storage cavity of exit plate 230 can be made 230d is connected, and can be connected simultaneously via the exhaust outlet 222 of film switch circuit layer 22 with the external world, therefore gas can be by going out The entrance 230a of oralia 230 is flowed into entrance temporary storage cavity 230c, then flow to outlet temporary storage cavity 230d via communication channel 230e, most Discharged afterwards by the outlet 230b of exit plate 230 through exhaust outlet 222 outside liftable keyboard structure 20.

Certainly, foregoing implementation explanation is adopted with button 21, film switch circuit layer 22 and its corresponding delivery valve seat 23 Exemplified by be described in detail, so when pump installation 24 be can the start in response to the electromagnetic signal, its be simultaneously to multiple delivery valve seats 23rd, 23 ', 23 " be evacuated, and make the internal gas of multiple delivery valve seats 23,23 ', 23 " can by be connected discharge chamber 240, 240 ', 240 " and be sent to pump installation 24, and then cause multiple delivery valve seats 23,23 ', 23 " at the same carry out pumping start, and by In each delivery valve seat 23,23 ', 23 " simultaneously through pump installation 24 start to be evacuated, be with each button 21, 21 ', 21 " can be extracted the gas in the cavity 212a of each flexible member 212 because of the pumping start of the pump installation 24, And compressive deformation is produced, and then make the button cap 210 of each button 21 to bottom offset h distance, as shown in Figure 4 B, to drop simultaneously The height of low each button 21,21 ', 21, and reduce the integral thickness of liftable keyboard structure 20 so that portable computer 2 It more may achieve light, thin, portable purpose.

In summary, the liftable keyboard structure that this case is provided is applied in portable computer, and its bottom of arranging in pairs or groups Seat inductor and start, the liftable keyboard structure include multiple buttons, film switch circuit layer, multiple delivery valve seats and The structures such as pump installation, when inductor senses that upper lid is close, then trigger signal and are transferred to pump installation, through taking out for pump installation Gas start, to drive delivery valve seat to carry out pumping start, to be evacuated to the flexible member in button, produces flexible member Deformation and compress downwards, and then make the button cap of button to bottom offset, and then reduce the height of button, to reduce liftable key The integral thickness of dish structure, so that portable computer during closing, can more reduce integral thickness in upper lid is entire, and reaches lightening The purpose of design；Therefore, liftable keyboard structure is made when the liftable keyboard structure of this case can cover close in automatic detection Falling head, can more make overall volume reduce and be thinned, to reach light comfortable portable purpose, great industry exploitation value File an application in accordance with the law value, whence.

Even if the utility model has been described and can apply craftsman's think of by being familiar with this those skilled in the art times and be in detail by above-described embodiment Modify, so neither taken off as attached claim is intended to Protector as all.

Claims (6)

1. a kind of liftable keyboard structure a, it is adaptable to portable computer, the portable computer includes a Shang Gai and a base, The base has an inductor, it is characterised in that the liftable keyboard structure includes：

Multiple buttons, each button has a button cap and a flexible member, and the flexible member is corresponding to the button cap Set；

One film switch circuit layer, with multiple air inlets and multiple exhaust outlets, each air inlet corresponds to being somebody's turn to do for the button Flexible member and set；

Multiple delivery valve seats, each delivery valve seat is correspondingly arranged under the film switch circuit layer and the corresponding button, And each delivery valve seat includes：One entrance, an outlet and a discharge chamber, the entrance are communicated in its corresponding thin film switch electricity The air inlet of road floor, the outlet is in the exhaust outlet of its corresponding film switch circuit layer, and each discharge chamber It is connected with the discharge chamber of the adjacent delivery valve seat；And

One pump installation, is connected with the discharge chamber of the plurality of delivery valve seat；

Wherein, when the inductor of the base of the portable computer, which is sensed, covers close on this, pump installation pumping work is made It is dynamic, with to the plurality of exhaust chamber pumping, so that the gas in the flexible member in each button sequentially flows through the film and opened The air inlet of circuit layer and the entrance of the delivery valve seat are closed, the film is flow into the delivery valve seat, then by the outlet On-off circuit layer the exhaust outlet and discharge, by the flexible member because gas extract out produce compressive deformation, drive each this press Keycap is to bottom offset, to reduce the height of each button.

2. liftable keyboard structure as claimed in claim 1, it is characterised in that each button further includes one scissor yuan Part, and the scissor element is connected to the button cap and the flexible member, to support and drive the button cap displacement.

3. liftable keyboard structure as claimed in claim 1, it is characterised in that the delivery valve seat is further included：

One exit plate, with the entrance, an entrance temporary storage cavity, the outlet, an outlet temporary storage cavity and a communication channel, the one of the entrance Side is connected with the air inlet of the film switch circuit layer, and opposite side is then communicated in the entrance temporary storage cavity, the side of the outlet It is connected with the exhaust outlet of the film switch circuit layer, opposite side is then communicated in the outlet temporary storage cavity, the communication channel is communicated in Between the entrance temporary storage cavity and the outlet temporary storage cavity；

One gas collection plate, is arranged under the exit plate；And

One valve sheet, is arranged between the exit plate and the gas collection plate, and with a valve opening；

Wherein, when the inductor of the base of the portable computer, which is sensed, covers close on this, then pump installation start is caused, The pump installation is connected with the discharge chamber of the plurality of delivery valve seat, when the pump installation is evacuated start, the plurality of delivery valve seat Interior gas can be sent to the pump installation by the plurality of discharge chamber being connected, and then it is temporary gas is flowed through the entrance by the entrance Chamber, the communication channel, the outlet temporary storage cavity are deposited, and the delivery valve seat, and being somebody's turn to do by the film switch circuit layer are flowed out from the outlet Exhaust outlet is discharged.

4. liftable keyboard structure as claimed in claim 3, it is characterised in that the gas collection plate of the delivery valve seat is further included One end of one first through hole and one second through hole, first through hole and the second through hole is connected with the gas collection chamber, The other end is then connected with the entrance temporary storage cavity and the outlet temporary storage cavity respectively.

5. liftable keyboard structure as claimed in claim 4, it is characterised in that the delivery valve seat further includes multiple convex portion knots Structure, therein one convex portion structure setting is disposed on first through hole in the one end of the outlet, another convex portion structure Side, supported to corresponding with the valve sheet when start.

6. liftable keyboard structure as claimed in claim 1, it is characterised in that the inductor of the base is an electromagnetism sense Device is answered, and lid has more a magnetic element, distance of the electromagnetic inductor to sense the magnetic element on this, and produce an electricity Magnetic signal.