CN201655603U

CN201655603U - Keyboard and key lifting switch device

Info

Publication number: CN201655603U
Application number: CN201020139728XU
Authority: CN
Inventors: 黎柏松
Original assignee: Individual
Current assignee: Zhuhai Gtech Technology Ltd
Priority date: 2010-03-11
Filing date: 2010-03-11
Publication date: 2010-11-24
Anticipated expiration: 2020-03-11

Abstract

The utility model discloses a keyboard and a key lifting switch device, and mainly improves a telescopic component of the key lifting; the telescopic component comprises a pair of frames and at least a synchronizing part; wherein, the frames are not in contact with each other and arranged in opposite and form a hollow cavity, the respective far sides of the two frames are respectively pivoted one of a support plate and a keycap, the respective near sides of the two frames are pivoted on the support plate and the keycap in sliding manner; the synchronizing part is used for lifting the pair of frames synchronously, the first side of the synchronizing part is pivoted on one of the support plate and the keycap on the periphery of the pair of frames, and the second side thereof is pivoted on the support plate and the keycap in sliding manner; and the pivot axis of the synchronizing part is perpendicular to the respective pivot axis of the two frames. The keyboard and the key lifting switch device optimize the internal structure of keys, reduce the size of the keyboard and the keys, facilitate improving the assembly technique and further improve the keyboard productivity and the qualified rate.

Description

Keyboard and key lifting switch device

[technical field]

The present invention relates to keyboard and key lifting switch device, relate in particular to the key lifting switch device and the applied keyboard thereof that use ultrathin button.

[background technology]

The applicant is on December 9th, 2009 disclosed CN101599379 patent announcement, a kind of key lifting switch device and assembling fixture thereof and packaging technology are proposed, abandon the key lifting switch device structure that depends on engagement type or scissor " linkage component " of monopolization technical market many decades, then adopt the pair of frames that do not contact the subtend setting mutually and be formed with cavity to realize guiding to the lifting action of keycap in conjunction with being used to suppress this synchronous piece to the framework synchronization lifting, this technological improvement makes key lifting switch device and corresponding packaging technology thereof have the structure of more simplifying, available shorter time, higher precision realizes the production of ultra-large automation keyboard.The structure chart of this case is directly quoted by the application, sees also Fig. 1 with its concrete structure of further understanding.

The applicant states in the process of the disclosed technical scheme of CN101599379 patent announcement on the implementation, finds that this technical scheme remains in the space of optimizing, and now specifies in conjunction with Fig. 1:

At first, in its telescopic component, the

movable span

2121,2122 on synchronous piece 21 bases 212 with support plate 4 on hooked rabbet 431,432 when combining, be to adopt rigidity to push the mode that snaps in to realize.In like manner, the base of two frameworks 23,25 each to pivot 2311,2312,2511,2512 with respective slide slots external member (being provided with

hooked rabbet

4110,4120,4210,4220) when combining, also be to adopt rigidity to push the mode that snaps in hooked rabbet to realize.The mode of this rigidity engaging is because hooked rabbet has weak rise part and sharp-pointed bending part, so it ruptures easily, fractures or passivation under stressed excessive or uneven situation;

Secondly, synchronous piece 21 adopts

movable span

2121,2122 with hooked rabbet 431,432 carry out in conjunction with and be designed to obtain one relative to sliding scale flexibly so that rotating up and down of synchronous piece 21 becomes possibility, but all there is the corner angle design in

movable span

2121,2122 with hooked rabbet 431,432, cause the rotation of synchronous piece 21 very not level and smooth, can not cooperate the lifting action of elastic component 31 well;

Moreover, the another side of synchronous piece 21 be its top margin 211 owing to need realize being connected with keycap 1, two

projections

2112,2114 need be limited in by framework 23, fastener 230 on 25,250 with the specific region of the common definition in keycap 1 bottom surface, keycap 1 with this to having overlapping region between the framework 23,25, so in its production and assembly technology, framework 23,25 needs to form in different moulds with synchronous piece, then with two operations successively installation of implementation framework, synchronous piece and support plate.The existence of overlapping region brings lengthy and tedious on the packaging technology, does not obviously meet the requirement of high efficiency production;

In addition, the technical scheme that the CN101599379 patent announcement is disclosed, owing to pass two frameworks 23, the ccontaining synchronous piece 21 of still needing between 25, and must preset the through hole 210 that passes through for elastic component 31 between the synchronous piece 21, thus framework 23 and 25 inevitable radial dimensions of the space width that surrounds jointly much larger than elastic component 31, so that not only hold energy elastic component 31 but also can hold synchronous piece 21 simultaneously, so just cause the button overall dimensions bigger than normal, thereby influence the whole size of keyboard.Even dwindle all members of button in proportion, ratio between the length of side of the radial dimension of elastic component 31 and two frameworks 23 and 25 rectangular areas of binding round jointly still can not obtain any change, so respectively form under the set situation of member proportionate relationship at button, the formed button size of known this kind technical scheme is bigger, can not be applicable to the narrow occasion of button row face of ask for something.

[summary of the invention]

For overcoming above-mentioned deficiency, the present invention is based on following purpose and propose:

Primary and foremost purpose is to provide a kind of key lifting switch device, further dwindling the size of keyboard, for the integral miniaturization of keyboard provides technology may; Also for the internal structure of optimizing keyboard in case the level and smooth degree of lifting when improving button so that the product qualified rate when improving assembling and improve on the whole and produce and packaging efficiency;

Another purpose is to provide a kind of keyboard, to realize the application of key lifting switch device of the present invention;

To achieve these goals, the present invention adopts following technical scheme:

A kind of key lifting switch device, comprise the keycap that is positioned at support plate top, be pressed or be subjected to back to release that power rises or when falling at keycap, keep keycap closed, opens this key signals with respect to the telescopic component of the balance of support plate, corresponding to the ascending, descending action of described keycap switching mechanism, described telescopic component is respect to one another upward setting between support plate and keycap, comprising:

The mutual pair of frames that does not contact the subtend setting and be formed with cavity jointly, each self-corresponding phase distally of two frameworks is hubbed on one of support plate and keycap respectively and goes up realizing and can pivot, each self-corresponding phase nearside then slidably be hubbed on support plate and keycap two on;

At least one is used to cause this synchronous piece to the framework synchronization lifting, its first side is hubbed on this one of being somebody's turn to do of support plate of framework periphery and keycap is gone up realizing and can pivot, its second side slidably be hubbed on support plate and keycap this two on;

On support plate and keycap one of were somebody's turn to do, the pivot axis of this synchronous piece and these two frameworks pivot axis separately were all perpendicular.

The pivot axis of described synchronous piece first side is near an axis of symmetry setting of one of being somebody's turn to do of support plate and keycap, this two the side setting of position near support plate and keycap that slidably be pivoted of synchronous piece second side.

This is provided with near the both sides of one of being somebody's turn to do of support plate and keycap respectively the pivot axis in each self-corresponding phase distally of framework, and this is to this two the axis of symmetry setting of position near support plate and keycap that be pivoted of each self-corresponding phase nearside of framework.

Be installed on the respective side of at least one framework on one of being somebody's turn to do of support plate and keycap or synchronous piece, be formed with pivotal axis, support plate and keycap one of be somebody's turn to do the then corresponding hole shape member that is formed with this pivotal axis, this hole shape member has the hole that is pivoted of matching with this pivotal axis.

Described hole shape member is one-body molded on one of being somebody's turn to do of support plate and keycap by clicking technique.

This hole shape member is erected in the surface of one of being somebody's turn to do of support plate and keycap, and its top is formed with the described hole that is pivoted, and the top, hole that is pivoted is provided with breach, is formed on clockwise locating part and locating part counterclockwise on the hole circle Zhou Fangxiang that is pivoted by the both sides of this breach.

This pivotal axis is provided with and is subjected to described clockwise locating part and limits part to limit the block of its rotation amplitude counterclockwise.The cross section of described pivotal axis is the incomplete shape with breach.

Be installed in support plate and keycap this two on this respective side to framework on, be formed with sliding pivot, this of support plate and keycap two on be formed with sliding pivot spare near one bar axis of symmetry position is then corresponding with this cunning pivot, this cunning pivot spare is provided with to plant for the cunning pivot and wherein carries out the chute of sliding-pivot.

This of described support plate and keycap two on have a sliding pivot spare at least chute shared for these two adjacent sliding pivots to framework.

Described sliding pivot spare is erected in this two surface of support plate and keycap, is formed with described chute on its risers.

This is to one of any U type that all roughly is of framework, having one folds along the crossbeam of its phase distally lengthwise setting and this crossbeam two ends certainly and to stretch to its two arm spares of nearside mutually, form half-round between two arm spares and the described crossbeam, each lengthwise bearing of trend both sides towards crossbeam, crossbeam two ends are provided with a described pivotal axis, and this pivotal axis homonymy that folds end and crossbeam to arm spare respectively is provided with a described sliding pivot.

Be installed in support plate and keycap this two on the respective side of this synchronous piece on, be formed with sliding pivot, this of support plate and keycap two on respective side edge on the then corresponding appearance moving part that is formed with this cunning pivot, this appearance moving part is provided with for the described sliding pivot moving groove of appearance that line slip pivots of wherein going forward side by side of planting.

This synchronous piece is provided with for this free therein movable concave part of framework.

This synchronous saddle is U type spare, its have along the crossbeam of its second side lengthwise setting and certainly these crossbeam two ends fold two arm spares that stretch to its first side, form described concave part between two arm spares and the described crossbeam, each longitudinally both sides towards crossbeam, crossbeam two ends are provided with a described sliding pivot, and this pivotal axis homonymy that folds end and crossbeam to arm spare respectively is provided with a described pivotal axis.

Disclose according to one embodiment of present invention, preferable, in described support plate and the keycap, its one of refer in particular to support plate, its two refers in particular to keycap.

Described switching mechanism comprises: cut-off diaphragm, and it is sticked on one of being somebody's turn to do of support plate and keycap, and is provided with the through hole that passes through for described telescopic component; Elastic component, the cavity that its half-round of passing described two frameworks surrounds jointly, two respective face of this of one end and support plate and keycap is inconsistent, the other end is with the corresponding contact setting with the switch contact of cut-off diaphragm in its inner contact, to open the signal of this key at the switch contact of the contact conflict cut-off diaphragm of keycap pressurized time compressing elastic component, return at elastic component and then leave the signal that this switch contact is closed this key when releasing.

A kind of keyboard, its at least one button adopts aforesaid key lifting switch device.

Compared with prior art, the present invention has following advantage:

At first, formed cavity can be used for only inserting elastic component between two frameworks, and need not insert other object, because the size of key lifting switch device depends on this size to the scope that framework surrounded, and the two radial dimensions that depend on elastic component of the size of framework, therefore, under the big or small set situation of elastic component, with respect to known technology, the size of button can be dwindled relatively, and the intervention of described synchronous piece, only the length of button or wide in only influenced the size of button on direction, so, the size of key lifting switch device of the present invention still is able to miniaturization, at least will be dwindled at its width, thereby the overall dimensions of the feasible keyboard that makes thus also can significantly reduce, and the occupied spatial area of keyboard is narrowed.

Secondly, synchronous piece is formed at the periphery of two frameworks, two frameworks can be got rid of the interference of synchronous piece and freely rotate, there are not overlapping region each other in synchronous piece and two frameworks, be convenient to adopt the injection mo(u)lding simultaneously of same mould, and eject simultaneously and be installed on support plate or the keycap, thus can be in packaging technology combining process, improve the production efficiency of the whole or single key lifting switch device of keyboard;

Moreover, adopt the hole shape member that band breach and the locating part and the hole that is pivoted of locating part clockwise counterclockwise are provided, make the be pivoted rotation of pivotal axis of framework on it and synchronous piece all can obtain more level and smooth movement effects, both overcome the resistance that the corner angle friction is brought in the conventional art, offside in the time of preventing to rotate with cooperating of locating part by the block on the pivotal axis again, make the comparatively smooth-going smoothness of lifting action of button thus, the keyboard good hand touch;

In addition, because the pivotal axis that all and hole shape member are pivoted mutually, comprise that on two frameworks and the synchronous piece each is to pivotal axis, be equipped with notch part, when mounted, the locating part top that can earlier this notch part be held on the hole shape member more a little the application of force pivot is inserted in the hole that is pivoted, and in the pivotal axis rotating process, because the pivotal axis position of the breach in the close hole that is pivoted does not have notch part, so it is difficult for detaching from the hole that is pivoted, therefore, this structure has more firm installation effect, the more important thing is, owing to be to adopt the mode of relative flexibility that pivot is inserted in the hole that is pivoted, be not prone to the situation that locating part damages, can improve the product qualified rate of product greatly;

In general, key lifting switch device assembling link in the production process of keyboard, keyboard of the present invention and key lifting switch device thereof are convenient to the keypad layout, with more easy mode each member as mode telescopic component that two frameworks of telescopic component are close to level but not the X type mode of scissor framework has been arranged on dynamic model, assemble mutually with support plate or keycap in regular turn then and get final product, be prepared into the less keyboard of the area that takes up room, do one's utmost to get rid of manpower work factor, bring revolutionary variation for the production technology of ultrathin keyboard undoubtedly.

Overview, key lifting switch device of the present invention and corresponding packaging technology thereof have the structure of more simplifying, and available shorter time, higher precision realize the production of ultra-large automation miniature keyboard.

[description of drawings]

The installation diagram of the key lifting switch device that Fig. 1 is disclosed for the CN101599379 patent announcement;

Fig. 2 is the installation diagram of key lifting switch device of the present invention;

Fig. 3 is telescopic component of the present invention, switching mechanism and the structure chart after support plate is assembled mutually;

Fig. 4 is the structure chart after telescopic component of the present invention and the keycap assembling;

Fig. 5 is the longitudinal section at the positive visual angle after the key lifting switch device assembling of the present invention;

Fig. 6 is the longitudinal section at the visual angle, side after the key lifting switch device assembling of the present invention, and the relative Fig. 5 in the visual angle of Fig. 6 is the right flank visual angle of Fig. 5;

Fig. 7 a-7d is the process schematic diagram that framework and the chute external member of support plate of telescopic component of the present invention assembled mutually, wherein, Fig. 7 a is the state before pivot does not insert chute, Fig. 7 b is pivot and the limiting section state when inconsistent, state when Fig. 7 c is pivot process chute breach, Fig. 7 d is the state that pivot has inserted chute.

[embodiment]

The present invention is further illustrated below in conjunction with drawings and Examples:

Keyboard of the present invention (not shown), input unit as electronic instrument, be applicable to personal computer, mobile phone, notebook computer and net book etc., have a plurality of ultrathin buttons, each button is made of a key lifting switch device, so after a plurality of key lifting switch device is assembled according to the arrangement of default keyboard layout, promptly form keyboard of the present invention, in like manner, the packaging technology of key lifting switch device also will be applicable to by its formed keyboard.

See also Fig. 2, keyboard of the present invention comprises support plate 4, switching mechanism 3, telescopic component 2 and keycap 1, described support plate 4 offers switching mechanism 3, telescopic component 2 and keycap 1 and installs, switching mechanism 3 is installed in the upper surface 4a of support plate 4, keycap 1 is positioned at switching mechanism 3 tops, and telescopic component 2 then places between keycap 1 and the support plate 4.Follow the user to the pushing of this keycap 1, keycap 1 conducts active force to switching mechanism 3, and switching mechanism 3 is opened button immediately, makes this button produce input signal; The user when hand is removed external force, switching mechanism 3 is put aside when being subjected to the compression of aforementioned active force returns and releases power and be released, then promote this keycap 1 homing, and switching mechanism 3 self has also cut out button owing to no longer stressed effect, make button no longer produce input signal, realize the shutoff of button.Support plate 4 is fixed on the keyboard carrier, keycap 1 be subjected to external force or switching mechanism release for 3 times the masterpiece time spent relatively its support plate 4 move up and down, in its lifting process, described telescopic component 2 is installed between keycap 1 and the support plate 4 and plays good balanced action, all the time keep the parallel relation stably between keycap 1 and the support plate 4, guarantee the feel the when user operates.

Among the present invention, respect to one another 1b and 4a between keycap 1 and the support plate 4, this opposite face 1b of keycap 1 is defined as the bottom surface or the lower surface of keycap 1, and this opposite face 4a of support plate 4 then is defined as the end face or the upper surface of support plate 4, with convenient further elaboration described later.Can see in the present invention, keycap 1 bottom surface 1b and support plate 4 end face 4a all need with this two sides between set telescopic component 2 contact to some extent physically with switching mechanism 3, among the present invention, but keycap 1 and support plate 4 face 1a and 4b toward each other have the relation of reciprocity, promptly, if telescopic component 2 is installed on the keycap 1 bottom surface 1b with first kind of structure and mode with switching mechanism 3, then be installed on the support plate 4 end face 4a with second kind of structure and mode; Otherwise if telescopic component 2 and switching mechanism 3 are installed on the support plate 4 end face 4a with first kind of structure and mode, then can second kind structure and mode be installed on the keycap 1 bottom surface 1b.Certainly, this reciprocal relation depends on the overall structure of key lifting switch device of the present invention, below will disclose some implementation details of the present invention with a kind of situation in this reciprocal relation.

Please scan the support plate 4 among Fig. 2, the upper surface 4a of this support plate 4, at these 8L two ends, figure left side, be provided with two hole shape member 41a that are mutually symmetrical with the limit, left side of support plate 4 with paralleling, 41b, in like manner, at these 8R two ends, figure right side, be provided with two hole shape member 42a that are mutually symmetrical with the right edge of

support plate

4,42b, each described hole shape member 41a with also paralleling, 41b, 42a, 42b all have the hole 400 that is pivoted and (as descend to the mortal world and relate to that the hole place of being pivoted is all unified to be this label 400, but label itself can not limit the position of this residing hole shape member in hole that is pivoted.Labels 401,402,405,2210,2218,2300,2301,120,130 described later etc. are also all herewith managed, be that these labels itself are only represented this component names, its present position and annexation are then limited by the corresponding component that it was subordinate to), two hole shape members of each side hole 400 that is pivoted separately is toward each other, the hole shape member 41a of 8L promptly, the pivot axis in the 41b hole 400 that is pivoted separately coincides, the right side.The hole shape member 42a in left side, the pivot axis in the 42b hole 400 that is pivoted separately also coincides.Two hole shape member 41a in left side, two hole shape member 42a on 41b and right side, 42b about the front and back of support plate 4 self to (8F, 8B direction) axis of symmetry symmetry, and two hole shape member 41a of left side 8L, two hole shape member 42a of 41b,

right side

8R, 42b, two hole shape members axis of symmetry to each other of each side depart from about support plate 4 self axis of symmetry setting to (8L, 8R direction) slightly.In addition, two hole shape members of each side axis of symmetry two ends (8L, 8R direction) to each other, also be respectively equipped with a

hole shape member

43a, 43b, in like manner, these two hole shape member 43a, to (8F, 8B direction) axis of symmetry symmetry, the hole 400 that is pivoted that it is had separately also is provided with 43b in opposite directions about the front and back of support plate 4 self.Two couple of above-mentioned support plate 4 left side 8L and right side 8R is totally four described hole shape member 41a that are distributed in 4 four jiaos of support plates, 41b, 42a, 42d have defined a rectangular area of support plate 4 jointly, at two the hole shape member 43as of support plate about 4 to (8L, 8R direction) setting, 43b, be set at the periphery of this rectangular area, obviously, be installed in this two hole shape member 43a, parts on the 43b have possessed the hole shape member 43a that is installed in this left side 8L and right side 8R, the condition of 43b periphery of being in.

Described each

hole shape member

41a, 41b, 42a, 42b, 43a, 43b, all be one-body molded at support plate 4 upper surfaces in the present embodiment, so support plate 4 is formed with some hole punchings (not label), in other not shown embodiment by clicking technique, those hole shape members also can adopt the formation physical connection of individual components on propping up with plate 4, and those skilled in the art should know this accommodation.

Described each

hole shape member

41a, 41b, 42a, 42b, 43a, 43b all are erected in support plate 4 upper surface 4a, roughly are tabular, the tip position place is provided with the hole 400 that is pivoted of consistent threading body, the hole top end that is pivoted breaks a breach 405 and (consults Fig. 7 a), make the both sides in this hole 400 that is pivoted respectively form a locating part 401,402 thus, in order to be distinguished, can determine that one of them locating part is clockwise locating part 402, another is counterclockwise locating part 401, and clockwise or counterclockwise determines, a side that is based on its hole shape member that is subordinate to is determined as reference face, determines that in other words the plane of reference of a hole shape member helps differentiating its different locating parts.Can be by the position of adjusting breach 405 so that two locating parts 401,402 have different sizes, if breach is partial to when counterclockwise being provided with, locating part 402 presents the effect greater than counterclockwise locating part 401 clockwise.About the plane of reference and caused clockwise, the counterclockwise relation thereof of determining the hole shape member, need to carry out in conjunction with the concrete structure of the present invention's telescopic component 2 described later, because aforementioned support plate 4 and arranged on left and right sides totally four hole shape member 41a that disclosed, 41b, 42a, the relative position relation of 42b can be determined the plane of reference of these four hole shape members so determine the plane of reference of one of them hole shape member, thereby determines the deflection position and clockwise, the counterclockwise relation of the breach 405 of each hole shape member.

For example, in conjunction with Fig. 2 and Fig. 3, the hole shape member 41b of front left side among the figure, with its left front side is the plane of reference, its breach 405 (sees also the numbering of Fig. 7 a, being partial to its left side (counterclockwise) down together) is provided with, so the clockwise locating part 402 of its formation is slightly larger than counterclockwise locating part 401, the hole shape member 41a of left rear side is owing to there is symmetric relation in the hole shape member 41b with front left side, so also being the deflection left side, its breach 405 is provided with, the locating part 401 in its left side is less than the locating part 402 on its right side, so the hole shape member 41b of its plane of reference and front left side together; In like manner, because two hole shape member 42a on right side, 42b about the front and back of support plate 4 self to two hole shape members of (8F, the 8B direction) axis of symmetry and

left side

41a, 41b is symmetrical, so two hole shape member 42a on right side, two hole shape member 41a in the plane of reference of 42b and left side, the plane of reference of 41b is opposite, and promptly its trailing flank shown in the figure is the plane of reference.Owing to be in two hole shape member 43a that support plate 4 left and right sides are mutually symmetrical, 43b does not have the more complicated symmetric relation of other hole shape member, determining of its plane of reference is comparatively flexible, can find out obviously among Fig. 2 that right flank (8R side) is these two hole shape member 43a, the plane of reference of 43b.The reader need be careful this example, in Fig. 2, for being used for defining jointly four hole shape member 41a of rectangular area, 41b, 42a, 42b, its breach 405 all is arranged outside of being partial to support plate 4, mainly be in order to match with pivotal axis (consulting follow-up more specific description) that plant is pivoted in the hole 400, by corresponding block 2218 (consult Fig. 3,4 etc.) is set on pivotal axis, limit the slewing area of the parts that are formed with this corresponding pivotal axis with breach 405 width between two locating parts 401,402.

Please watch the switching mechanism 3 among Fig. 2, described switching mechanism 3, comprise an elastic component 31 and a cut-off diaphragm 32, elastic component 31 inside have a contact (not shown), cut-off diaphragm 32 is formed by stacking by three basic diaphragms 3200 that are provided with connecting circuit (not shown), its bottom surface is sticked on support plate 4 end face 4a, the corresponding switch contact 320 that is formed with in the contact of its center and elastic component 31, elastic component 31 (further can be consulted Fig. 3 with its bottom 312 with the corresponding setting in the center of cut-off diaphragm 32, the assembling effect of Fig. 5 and Fig. 6), thus, when in case the top 310 of elastic component 31 is pressed, be subjected to the supporting role of its bottom 312, conflict in the contact of elastic component 31 inside and the switch contact 320 of compressing cut-off diaphragm 32 makes its closed generation and the corresponding signal output of this button, and remove in external force, when elastic component was released for 31 times, the output of switch contact 320 shutdown signals was left in the contact of cut-off diaphragm 32.Because support plate 4 upper surfaces exist described a plurality of

hole shape member

41a, 41b, 42a, 42b, 43a, the setting of 43b, so on described cut-off diaphragm 32 corresponding those

hole shape members

41a, 41b, 42a, 42b, 43a, the position of 43b is provided with a plurality of rectangular through-hole 321a that can supply those hole shape members to pass respectively, 321b, 322a, 322b, 323a, 323b, like this, cut-off diaphragm 32 is able to fully and support plate 4 upper surface 4a fit closely.

Because the principle and the structure of switching mechanism 33 are more common in known technology, thereby not all right giving unnecessary details.

Please in conjunction with consulting Fig. 2 and Fig. 4, described keycap 1 bottom surface 1b has the shade 11 that is erected in this bottom surface 1b, in rear side shown in Figure 2 (8B side), also be two bights of front side towards the reader shown in Figure 4, the bottom surface 1b of keycap 1 is provided with and keycap 1 integrated two

appearance moving parts

136 and 138, these two are held moving

part

136 and 138 and surround the subtend fluted body by a shade 11 and a wall spare (not label) of erectting, be mutually symmetrical, like this, two are held the just moving groove 130 of appearance opposite to one another of each self-forming of moving part 136 and 138.As its name suggests, the effect of holding moving groove 130 be to allow to plant wherein axle rotate with slight certain amplitude scope in slip.Fore-and-aft direction (8F, 8B direction) both sides at keycap 1 bottom surface 1b shown in Figure 2, two sliding pivot spares 121 also are set respectively, 123, two sliding pivot spares 121,123 are perpendicular to keycap 1 bottom surface 1b, at each sliding pivot spare 121,123 vertical wall is provided with chute 120, the chute 120 of two sliding pivot spares 121,123 toward each other to so that cooperate installing with a pair of axle part.This chute 120 has relatively long lengthwise space, like this, plant one of them or two axle spares are able to pivot in this chute 120 and slide, when the length of same chute 120 is enough to hold two axle spares and allows two axle spares to slide toward each other or on the contrary and when being reserved with the gap of two axle spares all the time, just satisfy application of the present invention, in explanation described later, will describe in conjunction with other parts.For the setting that adapts to each hole shape member on the support plate 4 depart from about to the situation of the axis of symmetry, sliding pivot spare 123 is formed at shade 11 places of keycap 1, sliding 121 of pivot spares depart from shade 11 and are provided with.Those skilled in the art it is also foreseen that two sliding pivot spares 121,123 not only can be one-body molded from keycap 1 bottom surface 1b as shown in this embodiment, can also adopt the formation with individual components to fix with physical connection mode and the keycap 1 that welds, rivets and so on.

Please in conjunction with Fig. 2, Fig. 3 and Fig. 4, described telescopic component 2 comprises pair of frames 22,22 ' and a synchronous piece 23, as previously mentioned, telescopic component 2 is installed between keycap 1 bottom surface 1b and the supporting base end face 4a, more specifically, show as this to framework 22,22 ' and this synchronous piece 23 and keycap 1 and supporting base 4 between be connected.This is mainly used in framework and impels keycap 1 to keep the balance of its fore-and-aft direction (8F, 8B direction) in Fig. 2 in its lifting process, this synchronous piece 23 then is used for making keycap 1 to keep the balance of its left and right directions (8L, 8R direction) in Fig. 2 at its lifting process, make this to framework 22 during design, 22 ' coordinate mutually with the size of this synchronous piece 23, the telescopic component 2 that then both constituted naturally and understandably can keep the simultaneous equation lifting of keycap 1, in whole process, keycap 1 bottom surface 1b remains with support plate 4 end face 4a and parallels.

Described two frameworks 22,22 ' mutually symmetry, and single framework 22 or 22 ' self also structure axisymmetricly, thus to the description of one of them framework 22 will be equally applicable to another one framework 22 '.Two frameworks 22,22 ' in the present invention is relatively to being provided with, so comparatively speaking, each framework 22 all has and another framework 22 ' relative phase distally and phase nearside, two frameworks 22,22 ' each phase distally all be restricted to and pivot, two frameworks 22 then, 22 ' just are restricted to and have two kinds of activity end states, particularly, when two frameworks 22,22 ' toward each other when rotation arrives its first termination point, form a similar planar structure parallel, be "---" shape in both leading flank visual angles in Fig. 2 with support plate 4; When two frameworks 22,22 ' opposite each other when rotation arrives its another termination point, form one and prop up structure, roughly be " eight " shape in both leading flank visual angles in Fig. 2.It should be noted that, two frameworks 22,22 ' in rotation process separately, all the time do not contact each other, promptly leave the gap, thereby the power that is subjected on framework can not be transmitted to directly on another framework yet, two frameworks 22,22 ' between do not have the interactively of direct power.

Because left and right two

frameworks

22,22 among Fig. 2 ' symmetrical, so be that example describes and gets final product with left side frame 22.This left side frame 22 roughly is the U type, have one and occupy the crossbeam 221 in its phase distally and vertical two the arm spare 22a that extend to its phase nearside that fold in two ends of these crossbeam 221 longitudinallies certainly, 22b, these crossbeam 221 bottoms are provided with recess 2211 and reserve two heel pieces, the outside of two heel pieces promptly is provided with pivotal axis 221a along the both sides of the longitudinally of crossbeam 221,221b, this is to pivotal axis 221a, the pair of holes that 221b is used to be installed in the left side (8L side) of described support plate 4 forms part 41a, in the hole 400 that is pivoted of 41b.

For ease of among each figure each is belonged to framework 22,22 ' pivotal axis 221a, 221b, 221a ', 221b ' more easily with corresponding hole shape member 41a, 41b, 42a, assemble mutually in the hole 400 that is pivoted of 42b, can be at pivotal axis 221a, 221b, 221a ', the bottom side of 221b ' is provided with a notch part 2210, particularly, be example with Fig. 2, the pivotal axis 221a when this notch part 2210 should be arranged on framework 22 and is in the state of termination that is parallel to support plate 4, the outside, bottom of 221b, framework 22 ' with it in like manner.The outside here is for the central axis of button, notch part 2210 (this label need be consulted Fig. 4) as the pivotal axis 221b of 22 forward directions of left side frame among Fig. 3 is arranged on the lower left corner as shown in the figure, the notch part 2210 of the pivotal axis 221b ' of right side frame 22 ' forward direction is arranged on the lower right corner as shown in the figure, notch part 2210 is to connect whole pivotal axis 221a, 221b, 221a ', 221b ' setting, also be each pivotal axis 221a, 221b, 221a ', the entire cross section of 221b ' all is the incomplete shape with breach, on this cross section, this notch part 2210 is advisable with the 1/4 circle size that accounts for pivotal axis.

For ease of further limiting

pivotal axis

221a, 221b, 221a ', the slewing area of 221b ', at

pivotal axis

221a, 221b, 221a ', one block 2218 is set on the 221b ', and this block 2218 should be arranged on framework 22,22 ' pivotal axis 221a when being in the state of termination that is parallel to support plate 4,221b, 221a ', the top side of 221b ', so, as

pivotal axis

221a, 221b, 221a ', 221b ' clockwise (based on the corresponding plane of reference) rotate to two frameworks 22,22 ' when being the state of "---", block 2218 is conflicted its clockwise locating part 402 and is made

pivotal axis

221a, 221b, 221a ', 221b ' stops operating, as

pivotal axis

221a, 221b, 221a ', 221b ' (based on the corresponding plane of reference) counterclockwise rotate to two frameworks 22,22 ' when being the state of " eight " font, block 2218 is conflicted its counterclockwise locating part 401 and is made

pivotal axis

221a, 221b, 221a ', 221b ' stops operating, this shows, cooperating of the breach 405 in block 2218 and the hole 400 that is pivoted can be so that two frameworks 22,22 ' the pivot activity controlled.

With reference to this explanation, the phase distally of the two pairs of frameworks 22,22 ' separately all is formed with a pair of pivotal axis 221a, 221b, and 221a ', 221b ', and each pivotal axis 221a, 221b, 221a ' is provided with notch part 2210 and block 2218 on the 221b '.Any one framework 22 or 22 ' with support plate 4 on hole shape member 41a, 41b is when 42a, 42b assemble mutually, only need with thimble 51,52 (consulting Fig. 7) push to this framework 22,22 ' with the state that is parallel to support plate 4 and are shelved on its counterclockwise locating part 401 places (based on the corresponding plane of reference), this moment pivotal axis 221a, 221b, 221a ', 221b ' is stuck in breach 405 positions in the hole 400 that is pivoted, thimble 51 with less transverse width, 52 capable again this frameworks 22 that touch, 22 ', framework 22,22 ' thereupon around its pivotal axis 221a, 221b, 221a ', the pivot axis of 221b ' rotates, whole then framework 22,22 ' two pivotal axis 221a, 221b, 221a ', 221b ' just insert and realize in two holes 400 that are pivoted accordingly installing.Thus also as can be seen, since pivotal axis 221a, 221b, 221a ', the cross section top of 221b ' is not provided with notch part 2210, thus pivotal axis 221a, 221b, 221a ', 221b ' is difficult for skidding off in the hole 400 that is pivoted accordingly, has guaranteed pivotal axis 221a, 221b, 221a ', the steadiness when 221b ' installs in the corresponding hole 400 that is pivoted with each.Two couples of hole shape member 41a on two frameworks 22,22 ' respectively and the support plate 4,41b, 42a, after 42b installed mutually, the pivot axis of left side frame 22 is basic among the figure was provided with near support plate 4 left sides, right side frame 22 ' pivot axis be provided with substantially near support plate 4 right sides.

In each framework 22 (or 22 ') phase nearside, two arm spare 22a, 22b (or 22a ', 22b ') terminal outside, respectively with its pivotal axis 221a, 221b (or 221a ', 221b ') direction correspondingly is provided with sliding pivot 220a, 220b (or 220a ', 220b '), this sliding pivot 220a, 220b (or 220a ', 220b ') is used to plant in the chute 120 into the sliding pivot spare 121,123 of described keycap 1, in this way, can realize two frameworks 22,22 ' the phase distally be hubbed on two couples of hole shape member 41a of support plate 4,41b, 42a, in the hole 400 that is pivoted of 42b, and with two frameworks 22,22 ' the phase nearside slidably be hubbed in the chute 120 of a pair of sliding pivot spare 121,123 of keycap 1 bottom surface 1b, thus, keycap 1 just can pin down two framework 22,22 ' liftings synchronously when elevating movement, and keeps keycap 1 from fore-and-aft direction (8F in Fig. 2 at least, the 8B direction) balance.Because the sliding pivot spare 121 on the keycap 1 bottom surface 1b of the present invention, 123 chute 120 is designed to hold simultaneously two sliding pivot 220a, 220a ' or 220b, 220b ', get final product two frameworks 22 so on the keycap 1 a pair of sliding pivot spare 121,123 only need be set, the sliding pivot 220a of 22 ' separately phase nearsides, 220a ' or 220b, 220b ' is after the respective slide slots 120 of planting, with two sliding pivot 220a of end, 220a ' or 220b, 220b ' pivots and slides toward each other or on the contrary in same chute 120, and, with two sliding pivot 220a of end, 220a ' or 220b, 220b ' can not contact with each other in same chute 120.In not shown another embodiment of the present invention, can independently provide sliding pivot spare for each sliding pivot, nature, the width of sliding pivot spare and formed chute thereof is with reduced.

Because this is to framework 22,22 ' in opposite directions are provided with, so at each framework 22,22 ' relative set one be the half-round 220 of removal, naturally, this half-round 220 is by crossbeam 221 and two arm spare 221a of framework 22,221b forms jointly, two frameworks 22,22 ' surrounding a cavity 20 jointly with in opposite directions half-round 220 separately, the size of this cavity 20 is enough to allow described elastic component 31 to pass through, so, this to framework 22,22 ' be provided with and will do not influence the elastic component 31 of described switching mechanism 3 and being connected of keycap 1.

Please in conjunction with Fig. 2 to Fig. 6, the present invention with reference to aforementioned about two frameworks 22,22 ' setting described synchronous piece 23 is set.Described synchronous piece 23 also roughly is the U type, and it also comprises a crossbeam 231 and two two arm spare 23a that fold from these crossbeam 231 two ends, 23b.Crossbeam 231 two ends of synchronous piece 23 are provided with sliding pivot 231a along its longitudinally, 231b, its sliding pivot 231a, the specific design of 231b is same as described framework 22,22 ' sliding pivot, realize slidably being pivoted so that be inserted in the moving groove 130 of appearance of appearance moving part 136,138 of two jiaos of described keycap 1 bottom surface 1b rear sides.Two arm spare 23a of synchronous piece 23, the terminal outside of 23b, with its crossbeam 231 directions one pivotal axis 230a is set respectively correspondingly, 230b, described pivotal axis 230a, the specific design of 230b is same as described framework 22,22 ' pivotal axis, so that its can with two hole shape member 43a of support plate 4 left and right directions (8L, 8R direction), 43b matches, planting goes into to be pivoted accordingly realizes pivoting in the hole 400.Crossbeam 231 and two arm spare 23a of synchronous piece 23,23b surrounds a concave part 230 jointly, because concave part 230 is towards support plate 4 directions, so the pivot of synchronous piece 23 can be to this to framework 22,22 ' produce any harmful effect with the activity space of elastic component 31.The crossbeam 231 of synchronous piece 23 is with two sliding pivot 231a, 231b is hubbed at two appearance moving parts 136 of keycap 1 rear side respectively, realize slidably pivoting in the moving groove 130 of 138 appearance, and with two arm spare 23a, two pivotal axis 230a in the 23b outside, 230b is hubbed at two hole shape member 43a of support plate 4 left and right directions (8L, 8R direction) respectively, realize in the hole 400 that is pivoted of 43b pivoting, but its range of pivot is subjected to its pivotal axis 230a, and the breach 405 on block 2301 on the 230b and the corresponding hole 400 that is pivoted defines jointly.In like manner, each pivotal axis 230a of synchronous piece 23, on the 230b all going out notch part 2300, so that synchronous piece 23 is more convenient for inserting in the hole 400 that is pivoted accordingly when assembling with two frameworks 22,22 ' identical conceptual design.As can be seen, the setting of synchronous piece 23 makes keycap 1 in its lifting process, is able to keep balance on left and right directions shown in Figure 2.

Hence one can see that, two frameworks 22 in the telescopic component 2,22 ' and the staggered form installing of synchronous piece 23 between support plate 4 and keycap 1, the pivot axis of framework and the pivot axis of synchronous piece are orthogonal, make keycap 1 can keep balance, make keycap 1 in whole lifting process, remain the state that parallels with support plate 4 with respect to the elevating movement of support plate 4.

Further analyze as can be known, because two frameworks 22, directly pass through in the 22 ' common cavity 20 that forms for elastic component 31, and other parts need not be set, so two frameworks 22,22 ' become littler with 31 common volumes that constitute of elastic component, even synchronous piece 23 has influenced the size of button on an one length, but on another direction of button, still can keep littler size, also just guaranteed the miniaturization of button on the whole, further can narrow and use the shared area of keyboard of key lifting switch device of the present invention.In addition, owing to possess this advantage, among the present invention, as shown in Figure 2, button can be made into rectangle.

Below set forth the assembling process and the operation principle of key lifting switch device of the present invention:

Please in conjunction with Fig. 2 to Fig. 6, at first, support plate 4 is fixing, then that the cut-off diaphragm in the switching mechanism 3 32 is parallel near this support plate 4, allow a plurality of hole shape member 41a on the support plate 4,41b, 42a, 42b, 43a, 43b pass the respective through hole 321a of cut-off diaphragm 32,321b, 322a, 322b, 323a, 323b is to be sticked cut-off diaphragm 32 at support plate 4 upper surface 4a, then, according to certain arrangement scheme, with two frameworks 22,22 of telescopic component 2 ' and synchronous piece 23 be clamped in jointly on the dynamic model (not shown), by dynamic model it is pushed to support plate 4 tops simultaneously, since this arrangement scheme provided each framework 22,22 ' and synchronous piece 23 and support plate 4 on each hole shape member 41a, 41b, 42a, 42b, 43a, the relative position relation between the 43b, shown in Fig. 7 a to 7d, so can by thimble 51,52 with two frameworks 22,22 of clamping on the dynamic model ' and a synchronous piece 23 be pushed to simultaneously on the relevant position of support plate 4, at this moment, any one pivotal axis 221a, 221b, 221a ', 221b ', 230a, 230b all can lie at its corresponding hole shape member 41a, 41b, 42a, 42b, 43a is on the counterclockwise locating part 401 of 43b, thimble 51,52 continuation push will make this two frameworks 22,22 ' and synchronous piece 23 trickle inclination takes place, and then each pivotal axis is snapped in its hole 400 that is pivoted accordingly, finish two frameworks 22,22 ' and the installation of synchronous piece 23 and support plate 4.This telescopic component 2 after the installation, at two frameworks 22, insert the elastic component 31 of switching mechanism 3 between the 22 ' formed cavity 220, at last with behind keycap 1 bottom surface 1b and the support plate 4 corresponding good positions, push keycap 1 two frameworks 22 in telescopic component 2,22 ' and the corresponding appearance moving part 136 of synchronous piece 23 and keycap 1 bottom surface 1b, 138 and corresponding sliding pivot spare 121,123 mutually assembling get final product, this moment conflicts keycap 1 bottom surface 1b centre and keycap 1 realization being connected physically naturally as shown in Figure 5 and Figure 6 in the top 310 of elastic component 31.As can be seen, because two frameworks 22,22 in the telescopic component 2 ' can disposablely finish installation with support plate 4 with a synchronous piece 23, further saved assembling procedure, help enhancing productivity.

See also Fig. 5 and Fig. 6, in use, at first keycap 1 is subjected to pressed by external force, thereupon toward the below sedimentation, just driving on the one hand elastic component 31 this moment presses down the contact that finally causes elastic component 31 inside and is connected with this button generation input signal of conducting with switch contact 320 on the cut-off diaphragm 32, then drive two frameworks 22 on the other hand synchronously, 22 ' and synchronous piece 23 declines, keycap 1 remains the state that parallels with support plate 4 in the decline process, two frameworks 22,22 ' and this synchronous piece 23 cooperatively interacting to each other guaranteed the balance of keycap 1 on all directions, also guaranteed they self moving equilibrium, meanwhile, the elastic potential energy of elastic component 31 constantly strengthens.After being applied to external force on the keycap 1 and removing, the elastic potential energy of elastic component 31 is converted into back the power of releasing, promoting keycap 1 rises upward, correspondingly, upspringing of elastic component 31 causes its inner contact to cut off the input signal of this button away from the switch contact on the cut-off diaphragm 32 320 on the one hand, on the other hand, upspringing of elastic component 31 promotes upspringing synchronously of keycap 1, keycap 1 then drives this two frameworks 22 synchronously when rising, 22 ' rise synchronously with this synchronous piece 23, rise to highest order until keycap 1.

The factor of returning the power of releasing of removing external force and producing by external force, in the overall process of keycap 1 lifting, its extreme higher position and extreme lower position depend on telescopic component 2, particularly, synchronous piece 23 and two frameworks 22,22 ' in, the rotatable angle of its pivotal axis has determined their motion ranges on the button vertical direction on the one hand, its sliding pivot has also determined their motion ranges on the button vertical direction in the corresponding slidably scope of holding in moving groove or the chute on the other hand, so, when external force with return when releasing the power appropriateness, keycap 1 rises, that falls is the highest, extreme lower position also is restricted.

Structure and packaging technology according to key lifting switch device of the present invention, and then can improve the packaging technology of the keyboard that adopts key lifting switch device of the present invention, particularly, keyboard is equiped with a plurality of buttons according to its keyboard layout, each button all can adopt key lifting switch device of the present invention, for this keyboard, the referencing key lifting switch device is the disposable step of finishing the assembling of whole telescopic component 2 and support plate 4 in assembling process, telescopic component in a plurality of key lifting switch devices 2 is placed same dynamic model (not shown) simultaneously, and the installation that is pushed to finish corresponding support plate 4 on these telescopic components 2 and the keyboard by thimble simultaneously gets final product.This shows that the production efficiency of keyboard will further be improved.

It is emphasized that, among the present invention, this annexation of telescopic component 2 and switching mechanism 3 and keycap 1 bottom surface and support plate 4 end faces, can be squeezed, particularly, the existing structure of above-mentioned keycap 1 bottom surface can be arranged on support plate 4 upper surfaces as two sliding pivot spares and two appearance moving parts, and each hole shape member of above-mentioned support plate 4 upper surfaces correspondingly is arranged on keycap 1 bottom surface, the cut-off diaphragm of switching mechanism 3 is sticked thus in keycap 1 bottom surface, the side that two frameworks and synchronous piece 23 have a pivotal axis also is installed in keycap 1 bottom surface thus and is pivoted accordingly in the hole, side with sliding pivot also is installed in support plate 4 end faces thus and moves in groove and the chute corresponding the appearance, and with the elastic component turned upside down to adapt with cut-off diaphragm, the technique effect that this kind mount scheme is realized naturally also can be identical with the above embodiments, belong to the alternative that is equal to of the foregoing description, should be understood by those of ordinary skills.

In sum, the present invention can dwindle the size of key lifting switch device, further dwindles the volume of keyboard, has optimized the structure of key lifting switch device, helps to improve packaging technology, makes the production efficiency of keyboard and product qualified rate be able to further raising.

Although the present invention has also enumerated the possible variation instance of part except that disclosing most preferred embodiment, after all can't be exhaustive, thereby special statement is as follows:

Above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.

Claims

1. key lifting switch device, comprise the keycap that is positioned at support plate top, be pressed or be subjected to back to release that power rises or when falling at keycap, keep keycap closed, opens this key signals with respect to the telescopic component of the balance of support plate, corresponding to the ascending, descending action of described keycap switching mechanism, it is characterized in that, described telescopic component is respect to one another upward setting between support plate and keycap, comprising:

2. key lifting switch device according to claim 1, it is characterized in that, the pivot axis of described synchronous piece first side is near an axis of symmetry setting of one of being somebody's turn to do of support plate and keycap, this two the side setting of position near support plate and keycap that slidably be pivoted of synchronous piece second side.

3. key lifting switch device according to claim 2, it is characterized in that, this is provided with near the both sides of one of being somebody's turn to do of support plate and keycap respectively the pivot axis in each self-corresponding phase distally of framework, and this is to this two the axis of symmetry setting of position near support plate and keycap that be pivoted of each self-corresponding phase nearside of framework.

4. key lifting switch device according to claim 3, it is characterized in that, be installed on the respective side of at least one framework on one of being somebody's turn to do of support plate and keycap or synchronous piece, be formed with pivotal axis, support plate and keycap one of be somebody's turn to do the then corresponding hole shape member that is formed with this pivotal axis, this hole shape member has the hole that is pivoted of matching with this pivotal axis.

5. key lifting switch device according to claim 4 is characterized in that, described hole shape member is one-body molded on one of being somebody's turn to do of support plate and keycap by clicking technique.

6. key lifting switch device according to claim 4, it is characterized in that, this hole shape member is erected in the surface of one of being somebody's turn to do of support plate and keycap, its top is formed with the described hole that is pivoted, the top, hole that is pivoted is provided with breach, is formed on clockwise locating part and locating part counterclockwise on the hole circle Zhou Fangxiang that is pivoted by the both sides of this breach.

7. key lifting switch device according to claim 6 is characterized in that, this pivotal axis is provided with and is subjected to described clockwise locating part and limits part to limit the block of its rotation amplitude counterclockwise.

8. key lifting switch device according to claim 6 is characterized in that, the cross section of described pivotal axis is the incomplete shape with breach.

9. key lifting switch device according to claim 3, it is characterized in that, be installed in support plate and keycap this two on this respective side to framework on, be formed with sliding pivot, this of support plate and keycap two on be formed with sliding pivot spare near one bar axis of symmetry position is then corresponding with this cunning pivot, this cunning pivot spare is provided with to plant for the cunning pivot and wherein carries out the chute of sliding-pivot.

10. key lifting switch device according to claim 9 is characterized in that, this of described support plate and keycap two on have a sliding pivot spare at least chute shared for these two adjacent sliding pivots to framework.

11. key lifting switch device according to claim 10 is characterized in that, described sliding pivot spare is erected in this two surface of support plate and keycap, is formed with described chute on its risers.

12. key lifting switch device according to claim 11, it is characterized in that, this is to one of any U type that all roughly is of framework, having one folds along the crossbeam of its phase distally lengthwise setting and this crossbeam two ends certainly and to stretch to its two arm spares of nearside mutually, form half-round between two arm spares and the described crossbeam, each lengthwise bearing of trend both sides towards crossbeam, crossbeam two ends are provided with a described pivotal axis, and this pivotal axis homonymy that folds end and crossbeam to arm spare respectively is provided with a described sliding pivot.

13. key lifting switch device according to claim 3, it is characterized in that, be installed in support plate and keycap this two on the respective side of this synchronous piece on, be formed with sliding pivot, this of support plate and keycap two on respective side edge on the then corresponding appearance moving part that is formed with this cunning pivot, this appearance moving part is provided with for the described sliding pivot moving groove of appearance that line slip pivots of wherein going forward side by side of planting.

14. key lifting switch device according to claim 13 is characterized in that, this synchronous piece is provided with for this free therein movable concave part of framework.

15. key lifting switch device according to claim 14, it is characterized in that, this synchronous piece is U type spare, its have along the crossbeam of its second side lengthwise setting and certainly these crossbeam two ends fold two arm spares that stretch to its first side, form described concave part between two arm spares and the described crossbeam, each longitudinally both sides towards crossbeam, crossbeam two ends are provided with a described sliding pivot, and this pivotal axis homonymy that folds end and crossbeam to arm spare respectively is provided with a described pivotal axis.

16. according to any described key lifting switch device in the claim 1 to 15, it is characterized in that, in described support plate and the keycap, its one of refer in particular to support plate, its two refers in particular to keycap.

17., it is characterized in that described switching mechanism comprises according to any described key lifting switch device in the claim 1 to 15: cut-off diaphragm, it is sticked on one of being somebody's turn to do of support plate and keycap, and is provided with the through hole that passes through for described telescopic component; Elastic component, the cavity that its half-round of passing described two frameworks surrounds jointly, two respective face of this of one end and support plate and keycap is inconsistent, the other end is with the corresponding contact setting with the switch contact of cut-off diaphragm in its inner contact, to open the signal of this key at the switch contact of the contact conflict cut-off diaphragm of keycap pressurized time compressing elastic component, return at elastic component and then leave the signal that this switch contact is closed this key when releasing.

18. a keyboard is characterized in that, its at least one button adopts as any described key lifting switch device in the claim 1 to 17.