CN105575704A - Button structure and input device - Google Patents
Button structure and input device Download PDFInfo
- Publication number
- CN105575704A CN105575704A CN201510918346.4A CN201510918346A CN105575704A CN 105575704 A CN105575704 A CN 105575704A CN 201510918346 A CN201510918346 A CN 201510918346A CN 105575704 A CN105575704 A CN 105575704A
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- China
- Prior art keywords
- keycap
- snap fit
- base plate
- press
- guide pillar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
Abstract
The invention relates to a button structure. The button structure comprises a key cap, a base plate, a circuit board and an elastic body. The key cap is provided with multiple clamp hooks configured to be on the lower surface thereof. The base plate is arranged under the key cap and is provided with multiple clamp hook guiding channels and multiple clamp hook seats connected with the clamp hook guiding channels. The clamp hook guiding channels penetrate through the base plate and are configured to correspond to the clamp hooks. The clamp hooks are movably arranged in the clamp hook guiding channels. Each of the clamp hook seats is provided with a clamp face. The circuit board is arranged under the base plate and provided with multiple clamp hook penetrating holes corresponding to the clamp hooks. The elastic body is arranged between the circuit board and the key cap and provides support force for the key cap. When the key cap is not pressed, the support force keeps the key cap to be in a quite high position and the clamp hooks to be pressed against the clamp faces. When the key cap is pressed and moves downwards from the quite high position by overcoming the support force, the clamp hooks are separated from the clamp faces and enter the clamp hook penetrating holes. When the clamp hooks enter the clamp hook penetrating holes, the button structure is allowed to provide much key cap stroke space, thereby ensuring the touch of pressing.
Description
Technical field
The invention relates to a kind of press-key structure, and relate to a kind of press-key structure that can be applicable to the slimming of input unit especially.
Background technology
Universal along with electronic installation, various input unit is widely used in wherein, becomes the medium of linking up between user and electronic installation, and the slimming of electronic installation also becomes one of trend that current industry has in mind.In response to such trend, the slimming of input unit is also try hard to pursue one of direction of asking caused by researcher.
For the input unit of pressing operation, expect that each press-key structure can get over Bao Yuehao in a thickness direction.But because this press-key structure is considerably thin, relatively, the stroke that button is pressed down is also short completely.So by feel during attenuating pressing operation, and allowing user when performing pressing operation, cannot experience whether pressed button clearly.
Summary of the invention
The present invention has about a kind of press-key structure, when the thickness of press-key structure reduces when, can provide more keycap stroke space, to promote feel during pressing operation.
According to one of the present invention object, a kind of press-key structure is proposed.Press-key structure comprises keycap, base plate, circuit board and elastomer.Keycap has keycap lower surface and a plurality of snap fit, and a plurality of snap fit is configured on keycap lower surface.Base plate is configured under keycap, and has a plurality of snap fit guiding channel and a plurality of snap fit seat.A plurality of snap fit guiding channel runs through base plate, and corresponds to the configuration of a plurality of snap fit.Each snap fit seat is connected to corresponding snap fit guiding channel.A plurality of snap fit is arranged in corresponding a plurality of snap fit guiding channels movably.Each snap fit seat has snap-latch surface.Circuit board arrangement under base plate, and has a plurality of snap fit through hole, and a plurality of snap fit through hole corresponds to the configuration of a plurality of snap fit.Elastomer is configured between circuit board and keycap, and the power that provides support is to keycap.When keycap is not pressed, support force makes keycap remain on higher position, and a plurality of snap fit is connected to the snap-latch surface of corresponding snap fit seat respectively.When keycap is pressed and overcomes support force and move downward from higher position, a plurality of snap fit is separated with the snap-latch surface of corresponding snap fit seat respectively, and enters in corresponding snap fit through hole.
As optional technical scheme, each snap fit seat of this plurality of snap fit seat is formed at the side of the close keycap of this corresponding snap fit guiding channel.
As optional technical scheme, the outline of this keycap is identical with the outline profile of this base plate, the center of this keycap of central alignment of this base plate, and this base plate also comprises accommodating perforate, this elastomer is placed in this accommodating perforate, and the center making this elastomer align this keycap abuts for this keycap.
As optional technical scheme, this base plate also comprises a plurality of projection, this circuit board also comprises a plurality of projection through holes corresponding to this plurality of projection configuration, each projection of this plurality of projection is each passed through each projection through hole of this plurality of projection through hole, is combined with this circuit board to make this base plate.
As optional technical scheme, this plurality of projection is combined with this plurality of projection through hole by the mode of hot melt.
As optional technical scheme, each snap fit of this plurality of snap fit has two snap fit sides of snap fit face and relative configuration, this snap fit face is relative with this keycap lower surface, and be connected with one of them of this two snap fits side, this two snap fits side is equipped with a plurality of snap fit protuberance, this snap fit guiding channel that this plurality of snap fit protuberance contact is corresponding.
As optional technical scheme, this base plate lower surface has the first fool-proof mechanism, and this circuit board upper surface has the second fool-proof mechanism, and when this first fool-proof mechanism aligns this second fool-proof mechanism of abutting, this base plate and this circuit board could be closely superimposed.
As optional technical scheme, this first fool-proof mechanism is depressed part, and this second fool-proof mechanism is illuminating module, this depressed part this illuminating module accommodating.
As optional technical scheme, this keycap also comprises a plurality of guide pillar, this base plate more comprises a plurality of guide pillar hole, this base plate is run through in this plurality of guide pillar hole, and this plurality of guide pillar hole corresponds to this plurality of guide pillar configuration, is arranged at movably in this corresponding a plurality of guide pillar hole to make this plurality of guide pillar.
As optional technical scheme, this circuit board also comprises a plurality of guide pillar through hole, and this plurality of guide pillar through hole corresponds to this plurality of guide pillar configuration, for each this plurality of guide pillar when this keycap is pressed through this corresponding a plurality of guide pillar through hole.
As optional technical scheme, each guide pillar of this plurality of guide pillar has center column and a plurality of strip guide pillar protuberance, this a plurality of strip guide pillar protuberance axially extends along this center column, and it is peripheral to be arranged on this center column symmetrically, when making this plurality of guide pillar relative to this plurality of guide pillar hole motion, this a plurality of guide pillar hole only touches this plurality of strip guide pillar protuberance, but does not touch this center column.
As optional technical scheme, this circuit board also comprises plurality of electrodes, this elastomer also has conductor, when this keycap is not pressed, this this conductor elastomeric keeps being separated with this plurality of electrodes, when this keycap is pressed, this keycap presses this elastomer and makes this distortional elastomer, is electrically connected this plurality of electrodes to make this this conductor elastomeric.
As optional technical scheme, this keycap lower surface also comprises salient point, and this salient point is aligned with this elastomeric central point, for this elastomeric central point of abutting.
As optional technical scheme, this base plate also has plate upper surface, and when this keycap is pressed, this keycap lower surface contacts this plate upper surface, and now the height of this press-key structure on this circuit board is the summation of the thickness of this base plate and the thickness of this keycap.
As optional technical scheme, this keycap also comprises a plurality of skirt border structure, this a plurality of skirt border structure defines keycap inner space around this keycap lower surface, the size of this base plate is less than the size of this keycap inner space, when this keycap be pressed move downward time, this base plate is received in this keycap inner space, make the lower surface of this plurality of skirt border structure can directly contact this circuit board, and the inner surface of this plurality of skirt border structure and this base plate keeps being separated.
The present invention also provides a kind of input unit, comprise a plurality of press-key structure as above, wherein, between this base plate of two adjacent these press-key structures, there is base plate gap, and when adjacent two these keycaps are pushed to down to extreme lower position, this plurality of skirt border structure is received in this base plate gap.
According to another object of the present invention, a kind of press-key structure is proposed.Press-key structure comprises keycap, base plate, circuit board and elastomer.Keycap has keycap upper surface, keycap lower surface, salient point and a plurality of snap fit.Keycap upper surface is relative with keycap lower surface.A plurality of snap fit and salient point protrude downwards from keycap lower surface.Distance between keycap upper surface and keycap lower surface is keycap thickness.Base plate has plate upper surface, base plate lower surface, a plurality of snap fit guiding channel, a plurality of snap fit seat and accommodating perforate.A plurality of snap fit seat is connected to a plurality of snap fit guiding channel.Plate upper surface is relative with base plate lower surface, and the distance between plate upper surface and base plate lower surface is base plate thickness.Each snap fit seat of a plurality of snap fit seat has snap-latch surface.Circuit board is incorporated into base plate lower surface, and has a plurality of snap fit through hole and plurality of electrodes.Elastomer, this elastomer is placed in this accommodating perforate, and covers above this plurality of electrodes.When keycap is not pressed, salient point is connected to elastomer through accommodating perforate, and elastomer force makes keycap remain on higher position, and a plurality of snap fit is connected on the snap-latch surface of corresponding snap fit seat respectively.When keycap is pressed, keycap is moved down into lower position from higher position, a plurality of snap fit is made to move downward and be separated with the snap-latch surface of corresponding a plurality of snap fit seats, and a plurality of snap fit enters in corresponding a plurality of snap fit through holes respectively, keycap lower surface contacts with plate upper surface, and now the height of press-key structure on circuit board is the summation of base plate thickness and keycap thickness.
As optional technical scheme, this keycap has square keycap outline, and this base plate has square base plate outline, and so when this keycap lower surface contacts with this plate upper surface, this keycap can firmly abut on which floor plate.
As optional technical scheme, each snap fit of this plurality of snap fit comprises two snap fit guiding faces of snap fit face and relative configuration, this snap fit face is relative with this keycap lower surface, and be connected with this two snap fits guiding face, each snap fit guiding channel of this plurality of snap fit guiding channel has two guiding faces, when this keycap is pressed, this two snap fits guiding face of this each snap fit still keeps abutting with this two guiding face of this each snap fit guiding channel, to guide the relative motion of this keycap between this higher position and this lower position.
As optional technical scheme, this keycap also comprises a plurality of skirt border structure, this a plurality of skirt border structure defines keycap inner space around this keycap lower surface, the size of this base plate is less than the size of this keycap inner space, when this keycap be pressed move downward time, this base plate is received in this keycap inner space, make the lower surface of this plurality of skirt border structure can directly contact this circuit board, and the inner surface of this plurality of skirt border structure and this base plate keeps being separated.
Compared with prior art, press-key structure proposed by the invention provides corresponding to the snap fit guiding channel set by keycap upper clamping hook and snap fit through hole on base plate, circuit board.When keycap is pressed and moves to lower position, snap fit can enter in the snap fit through hole of circuit board, increases the stroke that keycap is pressed down by this.Further, by the setting of snap fit through hole, can make press-key structure under the trend of slimming, more keycap stroke space still can be provided, to guarantee the feel pressed.
In order to have better understanding to the above-mentioned and other aspect of the present invention, preferred embodiment cited below particularly, and coordinating institute's accompanying drawings, being described in detail below:
Accompanying drawing explanation
What Figure 1A illustrated the single push-button structure of one embodiment of the invention looks up three-dimensional exploded view.
Figure 1B illustrates the top perspective exploded view of the single push-button structure of Figure 1A.
Fig. 1 C illustrates the enlarged drawing of the region A1 of the press-key structure of Figure 1A.
Fig. 1 D illustrates the enlarged drawing of the region A2 of the press-key structure of Figure 1A.
Fig. 1 E illustrates the enlarged drawing of the region A3 of the press-key structure of Figure 1A.
Fig. 2 A illustrates the profile after the press-key structure assembling of Figure 1A.
Fig. 2 B illustrates the schematic diagram after the press-key structure pressing of Fig. 2 A and magnified partial view thereof.
Fig. 2 C illustrates the schematic diagram after the press-key structure pressing of adjacent two Fig. 2 A.
Fig. 3 A illustrates the upward view of the guide pillar of one embodiment of the invention.
Fig. 3 B illustrates the upward view of the guide pillar of another embodiment of the present invention.
Fig. 3 C illustrates the upward view of the guide pillar of further embodiment of this invention.
Fig. 4 illustrates the upward view of the single push-button structure of another embodiment of the present invention.
Fig. 5 illustrates the upward view of the single push-button structure of further embodiment of this invention.
Fig. 6 A is not yet pressed the fragmentary cross-sectional view of state after illustrating the press-key structure assembling of Fig. 5.
Fig. 6 B illustrates the press-key structure of Fig. 6 A by the fragmentary cross-sectional view of pressed by external force to extreme lower position state.
Embodiment
The present invention proposes a kind of press-key structure, but the present invention is not limited in proposed embodiment.Describing in embodiment, as thin portion structure, related elements size positions, with corresponding spatial relationship etc., be only the use illustrated, not the present invention limited for the scope protected.Therefore, the present invention not demonstrates all possible embodiment, has and usually know that the knowledgeable can be changed and modification the structure of embodiment in the spirit and scope not departing from this exposure, with the needs of realistic application in art.Therefore the present invention is not limited to following embodiment, and can be carried out in various different formats, other embodiment do not proposed in the present invention also may be able to be applied.Moreover the dimension scale on graphic is not drawn according to actual product equal proportion, and therefore specification and graphic content are only described herein the use of embodiment, but not as the use of limit scope.In addition, in specification, similar component symbol continues to use similar component symbol, in order to explanation.
What Figure 1A illustrated the single push-button structure 100 of one embodiment of the invention looks up three-dimensional exploded view.Figure 1B illustrates the top perspective exploded view of the single push-button structure 100 of Figure 1A.
Please refer to Figure 1A and Figure 1B, press-key structure 100 can comprise keycap 110, base plate 120, circuit board 130 and elastomer 136.Base plate 120 is configurable under keycap 110, and circuit board 130 is configurable under base plate.Elastomer 136 is configurable between circuit board 130 and keycap 110.
Please refer to Figure 1A, keycap 110 can comprise a plurality of snap fit 112, and this plurality of snap fit 112 is configured on keycap lower surface 110LS.Though illustrate two snap fits 112 in Figure 1A, so in other embodiments, the quantity of snap fit 112 also can be more than two.Base plate 120 can have a plurality of snap fit guiding channel 122 and a plurality of snap fit seat 121.A plurality of snap fit guiding channel 122 runs through base plate 120, and the quantity of a plurality of snap fit guiding channel 122 and position correspond to the quantity of a plurality of snap fits 112 on keycap 110 and position configure, and each snap fit 112 is configured in the snap fit guiding channel 122 of correspondence movably.Further, each snap fit seat 121 is connected to the snap fit guiding channel 122 of each correspondence.Circuit board 130 can have a plurality of snap fit through hole 132, the position of this plurality of snap fit through hole 132 also correspond to keycap 110 the position configuration of snap fit 112.
Fig. 2 A illustrates the profile after press-key structure 100 assembling of Figure 1A.
Please refer to Fig. 2 A, and coordinate with reference to Figure 1A and Figure 1B.If when keycap 110 is not subject to pressing, elastomer 136 can provide support power to keycap 110, remains on higher position to make keycap 110.For example, in one embodiment, keycap 110 outer profile size slightly larger than base plate 120 outer profile size, but the outline of the outline of keycap 110 and base plate 120 profile is similar in fact, and the center of base plate 120 aligns in fact the center of keycap 110.More can comprise accommodating perforate 126 in the center of base plate 120, elastomer 136 can be placed in accommodating perforate 126.Further, elastomer 136 aligns in fact the center of keycap 110, with the central point making keycap 110 be connected to elastomer 136.In one embodiment, can more comprise salient point 116 in the center of keycap 110, this salient point 116 is configured on keycap lower surface 110LS, and is aligned with the central point of elastomer 136, for the central point abutting elastomer 136.
Please coordinate with reference to Fig. 1 C, Fig. 1 C illustrates the enlarged drawing of the region A1 of the press-key structure 100 of Figure 1A.Each snap fit seat 121 can have snap-latch surface 121S1.Further, each snap fit seat 121 can be formed at the side of the close keycap 110 of corresponding snap fit guiding channel 122, when keycap 110 is not subject to pressing, contributes to making keycap 110 remain on higher position.Under keycap 110 is not subject to pressing situation, each snap fit 112 is connected to the snap-latch surface 121S1 of corresponding snap fit seat 121, and keycap 110 can not be come off outside base plate 120 when higher position.
In addition, in one embodiment, base plate 120 and circuit board 130 can not produce relative displacement in conjunction with fixing.For example, in figure ia, base plate 120 more can comprise a plurality of projection 128, and circuit board 130 more can comprise a plurality of projection through hole 138, and the quantity of a plurality of projection through hole 138 and position correspond to quantity and the position configuration of a plurality of projections 128 on base plate 120.This plurality of projection 128 can be each passed through in corresponding a plurality of projection through holes 138, therefore base plate 120 and circuit board 130 can interfix with projection through hole 138 by these projections 128, make circuit board 130 be incorporated into the lower surface 120LS (as shown in Figure 2 A) of base plate 120.Or in another embodiment, a plurality of projection 128 can combine with corresponding a plurality of projection through holes 138 by the mode of hot melt.
Fig. 2 B illustrates the schematic diagram after press-key structure 100 pressing of Fig. 2 A and magnified partial view thereof.
Please refer to 2A and 2B figure, circuit board 130 can more comprise plurality of electrodes 135, and elastomer 136 is covered in above electrode 135, and can have conductor.As shown in Figure 2 A, when keycap 110 is not pressed, the conductor of elastomer 136 keeps being separated with electrode 135, therefore can not electrically conduct between each electrode 135.When keycap 110 is pressed, as shown in Figure 2 B, when keycap 110 is pressed, keycap 110 can be such as press in elastomer 136 by salient point 116, makes the stressed generation distortion of elastomer 136, and storage elasticity power.When elastomer 136 stress deformation during contact electrode 135, the conductor of elastomer 136 can be electrically connected at electrode 135, and now circuit board 130 can produce keying signal, makes electronic installation perform corresponding function.Otherwise if when keycap 110 is no longer pressed, the higher position that keycap 110 can be returned to as Fig. 2 A by the elastic force stored by elastomer 136, makes circuit board 130 no longer produce keying signal.Moreover, by the elastic force of elastomer 135, the paragraph sense produced when keycap 110 presses can be promoted in the lump.
As shown in Figure 1A and Fig. 1 C, each snap fit guiding channel 122 can have two guiding face 122S2.In addition, Fig. 1 D illustrates the enlarged drawing of the region A2 of the press-key structure 100 of Figure 1A.As shown in Figure 1A and Fig. 1 D, each snap fit 112 can have more two snap fit guiding face 112S2 of relative configuration.When keycap 110 is pressed, two snap fit guiding face 112S2 of each snap fit 112 still keep abutting with two guiding face 122S2 of corresponding snap fit guiding channel 122, to guide the relative motion of keycap 110 between higher position and lower position.
In addition, fixing owing to be combineding with each other between base plate 120 and circuit board 130, the snap fit guiding channel 122 on base plate 120 configures with the snap fit through hole 132 on circuit board 130 is also corresponding.When keycap 110 is pressed and overcomes support force that elastomer 136 provides and move downward from higher position, the snap fit 112 on keycap 110 is separated with the snap-latch surface 121S1 of corresponding snap fit seat 121, and enters in corresponding snap fit through hole 132.By the setting of snap fit through hole 132, can make press-key structure 100 under the trend of slimming, more keycap stroke space still can be provided, to guarantee the feel pressed.
Moreover because base plate 120 and circuit board 130 correspond to snap fit 112 and be respectively equipped with snap fit guiding channel 122 and snap fit through hole 132, therefore when keycap 110 is pressed, snap fit guiding channel 122 and snap fit through hole 132 can pass for snap fit 112.Now, keycap 110 is pressed the state and electrode 135 is triggered as shown in Figure 2 B, when salient point 116 length is larger, have minimum gap between keycap lower surface 110LS and plate upper surface 120US, but keycap lower surface 110LS ten points is close to plate upper surface 120US; Or in another embodiment, salient point 116 length also can design shorter, so makes electrode 135 be triggered, and keycap lower surface 110LS is contacted with plate upper surface 120US simultaneously, that is there is not gap between keycap lower surface 110LS and plate upper surface 120US.So when keycap 110 is pressed against extreme lower position, the height of press-key structure 100 on circuit board 130 is only the summation of keycap thickness H1 and base plate thickness H2.Wherein, keycap thickness H1 is the distance between keycap upper surface 110US and keycap lower surface 110LS, and base plate thickness H2 is the distance between plate upper surface 120US and base plate lower surface 120LS.By this, the integral thickness of press-key structure 100 can be reduced, simultaneously when the thickness of press-key structure 100 reduces, also can provide more keycap stroke space, to guarantee the feel pressed.For example, the whole height that can control press-key structure 100 is such as be less than 2 millimeters (mm), but still can provide the keycap stroke being greater than about 0.4 millimeter (mm).In other preferred embodiment, keycap 110 has and is essentially square keycap outline, and keycap lower surface 110LS substantial planar; And base plate 120 has and is essentially square base plate outline, and plate upper surface 120US substantial planar; So be symmetrical in the contact of keycap 110 central point through keycap lower surface 110LS and plate upper surface 120US equivalent area, even if user presses energetically, keycap 110 still can be connected on base plate 120 reposefully, reduces the possibility that inclination is rocked.
In addition, in the embodiment of Fig. 2 A and Fig. 2 B, keycap 110 more can comprise a plurality of skirt border structure 115, and this plurality of skirt border structure 115 defines keycap inner space around keycap lower surface 110LS.Under this structure, base plate 120 is only positioned within keycap inner space.That is, the size (height and the width) of base plate 120 is less than the size (height and the width) of keycap inner space.So when keycap 110 is pressed down to extreme lower position, base plate 120 can be received completely in keycap inner space, make the lower surface 115LS of skirt border structure 115 directly be contacted with circuit board 130, and the inner surface 115IS of skirt border structure 115 keeps being separated with base plate 120.In addition keycap lower surface 110LS still can contact with plate upper surface 120US, and the height of press-key structure 100 like this on circuit board 130 is still only the summation of keycap thickness H1 and base plate thickness H2.Therefore as shown in Figure 2 C, whole input unit (being such as computor-keyboard) has a plurality of press-key structure 100, but the base plate 120 of adjacent two press-key structures 100 is not connected to each other, but there is base plate gap 120G; And when keycap 110 is pressed down to extreme lower position, base plate gap 120G can receive the skirt border structure 115 of adjacent two keycaps 110.Thus, the integral thickness reducing press-key structure 100 can be reached, simultaneously when the thickness of press-key structure 100 reduces, also can provide the effect of more keycap stroke space.
Please refer to Figure 1A.The keycap 110 of the present embodiment more can comprise a plurality of guide pillar 114, and base plate 120 more can comprise a plurality of guide pillar hole 124.Base plate 120 is run through in a plurality of guide pillar hole 124, and the quantity in a plurality of guide pillar hole 124 and position correspond to quantity and the position configuration of guide pillar 114, are arranged at movably in corresponding guide pillar hole 124 to make each guide pillar 114.By the setting in guide pillar 114 and guide pillar hole 124, the use of the aligning of keycap 110 when moving up and down can be provided, and not easily produce deflection, and produce effect straight up and down, promote the operating handle of user.
In addition, please refer to Fig. 3 A to Fig. 3 C, it illustrates the upward view of the guide pillar 114 of various embodiments of the invention.So, guide pillar 114 external form of the present invention is not limited in these embodiments.
The shape of each guide pillar 114 of the present invention can be non-cylinder.Each guide pillar 114 can have center column 1141 and a plurality of strip guide pillar protuberance 1142.A plurality of strip guide pillar protuberance 1142 axially can extend (that is extending along the direction perpendicular to this page) along center column 1141, and it is peripheral to be arranged on center column 1141 symmetrically.By this, when each guide pillar 114 moves relative to the guide pillar hole 124 of correspondence, guide pillar hole 124 only touches strip guide pillar protuberance 1142, but cannot touch center column 1141, thus can lower frictional force when keycap 110 moves up and down, promote feel when user operates.
In addition, please refer to Figure 1A.Circuit board 130 more can comprise a plurality of guide pillar through hole 134.The quantity of a plurality of guide pillar through hole 134 and position correspond to quantity and the position configuration of a plurality of guide pillar 114, for each guide pillar 114 guide pillar through hole 134 through correspondence when keycap 110 is pressed.By the setting of guide pillar 114 through hole 134, can make press-key structure 100 under the trend of slimming, more keycap 110 stroke space still can be provided, to guarantee the feel pressed.
Please refer to the magnified partial view of the press-key structure 100 of Fig. 2 B.Each snap fit 112 can have two snap fit side 112S3 of a snap fit face 112S1 and relative configuration.Snap fit face 112S1 is relative with keycap lower surface 110LS, and is connected with one of them snap fit side 112S3.Two snap fit side 112S3 are equipped with a plurality of snap fit protuberance 1121.
Please coordinate with reference to Fig. 1 E, it illustrates the enlarged drawing of the region A3 of the press-key structure 100 of Figure 1A, demonstrates a plurality of snap fit protuberance 1121 with clearer.A plurality of snap fit protuberance 1121 is all arrange in spaced mode on two snap fit side 112S3.Therefore, when keycap 110 moves up and down, a plurality of snap fit protuberance 1121 can contact corresponding snap fit guiding channel 122.And due to snap fit protuberance 1121 be arrange in spaced mode, thus can reduce the contact area between snap fit 112 and snap fit guiding channel 122, reduce the frictional force of keycap 110 when moving up and down.Meanwhile, a plurality of snap fit protuberance 1121 more can be used as the use of aligning when keycap 110 moves up and down, and not easily produces deflection when keycap 110 is moved up and down, and produces effect straight up and down, promotes the operating handle of user.
According to foregoing, the guide pillar 114 that the present invention can utilize profile to be non-cylinder, and/or be the use directly utilizing snap fit 112 to be used as aligning when keycap 110 moves up and down.
Please refer to Fig. 4, it illustrates the upward view of the single push-button structure 200 of another embodiment of the present invention.In the diagram, the profile of circuit board 230 is represented by dotted lines, with the clear detailed profile distinguishing keycap 210 and base plate 220.
In this embodiment, snap fit 212 can be set in four of keycap 210 corner, and two guide pillars 214 can be set on the keycap lower surface near the relative dual-side of keycap 210, the use of aligning when simultaneously moving up and down as keycap 110 using snap fit 212 and guide pillar 214.And in other embodiments, also can only use snap fit 212 and guide pillar 214 is not set, the use of aligning when keycap 210 moves up and down directly is used as with snap fit 212.
In addition, as shown in Figure 4, the large I of the snap fit through hole 232 on circuit board 230 is greater than the snap fit guiding channel 222 on base plate 220, and the large I of guide pillar through hole 234 on circuit board 230 is greater than the guide pillar hole 224 on base plate 220.By such setting, can make press-key structure 200 in time assembling or disassemble, reduce the impact of pulling capacity, reduce the risk of snap fit 212 and guide pillar 214 damage.
In addition, in the embodiment of Figure 1A, Figure 1B and Fig. 4, the base plate 120 of press-key structure 100 and the base plate 220 of press-key structure 200 can comprise the first fool-proof mechanism 123 and 223 respectively, wherein, first fool-proof mechanism 123 is positioned at the lower surface 120LS of base plate 120, and the first fool-proof mechanism 223 is positioned at the lower surface of base plate 220.The circuit board 130 of press-key structure 100 and the circuit board 230 of press-key structure 200 can comprise the second fool-proof mechanism 133 and 233 respectively, wherein, second fool-proof mechanism 133 is positioned on circuit board 130 upper surface 130US, and the second fool-proof mechanism 233 lays respectively at the upper surface of circuit board 230.Due to the keycap 110 and 210 of press-key structure 100 and 200, the upper and lower side of base plate 120 and 220 is not symmetrical external form, and the lower side such as demonstrating keycap 210 and base plate 220 is in the diagram circular arc, but upper side edge is linear.Therefore, between base plate 120 and 220 and circuit board 130 and 230, need fool-proof design to guarantee correct location, in order to avoid mounting base 120 and 220 time, circular arc side is installed to top mistakenly, and when correctly will install keycap 110 and 210 after a while (circular arc side immediately below), both meetings interfere and cannot install smoothly.So with the assembling fool-proof mechanism of additional designs, only have when the first fool-proof mechanism 123 and 223 aligns in storage second fool-proof mechanism 133 and 233 respectively, base plate 120 and 220 could respectively and closely superimposed between circuit board 130 and 230.
In addition, in other embodiments, press-key structure can in realizing in luminous input unit, such as, be also be applied to illuminated keyboard.In this embodiment, the first fool-proof mechanism 123 and 223 can be depressed part, that is the first fool-proof mechanism 123 and 223 does not run through base plate 120 and 220.Second fool-proof mechanism 133 and 233 can be illuminating module, such as, be light-emittingdiode; Light-emittingdiode like this is with luminous and assembling fool proof two kinds of functions.In this embodiment, depressed part can accommodating illuminating module, and base plate 120 and 220 can be the light guide structure of a light-permeable, and its material is such as plastic cement.By this, can assisting user under the environment for use of luminance shortage, the light source that still can provide by illuminating module is to know the printed words on identification keycap.
Please refer to Fig. 5, it illustrates the vertical view of the single push-button structure 300 of further embodiment of this invention.Press-key structure 100 and 200 difference of the present embodiment and above-described embodiment is: the press-key structure 300 of the present embodiment can be applicable to the press-key structure of larger area in keyboard " multiple key " (area is greater than above-described embodiment F standard one times of key " press-key structure 100 and 200), so-called " multiple key " such as: the key cap surface such as the blank key on keyboard, enter key or shift key amass larger press-key structure.
In this embodiment, the keycap 310 of press-key structure 300 can comprise several installing zone R1 and several non-installing zone R2, such as, be that employing three installing zone R1 and two installing zone R2 configures in the mode at interval to each other.Installing zone R1 can take the relevant configuration of the keycap 110 or 210 being similar to above-described embodiment.Further, base plate 320 is only positioned within each installing zone R1.That is, the base plate 320 in each installing zone R1 is not connected, but each installing zone R1 can share same circuit board 330.And in other embodiments, the quantity of installing zone R1 and non-installing zone R2 and putting position can change according to the user demand of reality.For example, amass for less press-key structure for key cap surface, can adopt and only there are two installing zone R1, and the mode without non-installing zone R2 configures.
Please refer to 6A and 6B figure, Fig. 6 A is not yet pressed the fragmentary cross-sectional view of state after illustrating press-key structure 300 assembling of Fig. 5, Fig. 6 B illustrates the press-key structure 300 of Fig. 6 A by the fragmentary cross-sectional view of pressed by external force to extreme lower position state.
As shown in Fig. 6 A and Fig. 6 B, in order to clearly illustrate detail section, in Fig. 6 A and Fig. 6 B, only demonstrate the press-key structure 300 of a part.The press-key structure 300 of this embodiment is similar to Fig. 2 A and the press-key structure shown in Fig. 2 B 100, its snap fit 312, snap fit seat 321 and snap fit through hole 332 to make flowing mode identical with snap fit 112, snap fit seat 121 and snap fit through hole 132, and also with the press-key structure 100 of Fig. 2 A and Fig. 2 B, there is same effect, repeat no more in this.
Just as above-mentioned, press-key structure proposed by the invention provides corresponding to the snap fit guiding channel set by keycap upper clamping hook and snap fit through hole on base plate, circuit board.When keycap is pressed and moves to lower position, snap fit can enter in the snap fit through hole of circuit board, increases the stroke that keycap is pressed down by this.In addition, snap fit also can be used as the use of aligning when keycap moves up and down and location, to guarantee that keycap produces effect straight up and down in motion process.And several snap fit protuberance is set by snap fit side, makes keycap when moving, reducing the contact area between snap fit and snap fit guiding channel.
In other embodiments, also guide pillar can be set on keycap, and provide corresponding to the guide pillar hole set by guide pillar and guide pillar through hole on base plate and circuit board, in motion process, produce effect straight up and down to assist keycap; And when keycap is pressed and moves to lower position, guide pillar can enter the guide pillar through hole of circuit board, increase the stroke that keycap is pressed down by this; In addition, the guide pillar of the non-cylindrical bodily form also can be set, to reduce the contact area between guide pillar and guide pillar hole.
Press-key structure proposed by the invention can be applicable in input unit, such as, be applied to keyboard, and the keyboard of particularly slimming.During practical application, press-key structure can be rearranged keyboard on demand.If during keycap one times of key that to be area less, press-key structure 100,200 described above and distortion thereof can be adopted.If during the keycap many times of keys that to be area larger, press-key structure 300 described above and distortion thereof can be adopted.In addition, be not connected to each other between the base plate of each press-key structure in above-mentioned keyboard, but each press-key structure can share same circuit board.
In sum, although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on the claim person of defining.
Claims (20)
1. a press-key structure, is characterized in that, this press-key structure comprises:
Keycap, it has keycap lower surface and a plurality of snap fit, and this plurality of snap fit is configured on this keycap lower surface;
Base plate, it is configured under this keycap, this base plate has a plurality of snap fit guiding channel and a plurality of snap fit seat, this a plurality of snap fit guiding channel runs through this base plate, and correspond to this plurality of snap fit configuration, this a plurality of snap fit seat is connected to this corresponding plural snap fit guiding channel, and this plurality of snap fit is arranged in this corresponding a plurality of snap fit guiding channel movably, and each snap fit seat of this plurality of snap fit seat has snap-latch surface;
Circuit board, it is configured under this base plate, and this circuit board has a plurality of snap fit through hole, and this plurality of snap fit through hole corresponds to this plurality of snap fit configuration; And
Elastomer, it is configured between this circuit board and this keycap, and this elastomer provides support power to this keycap;
Wherein, when this keycap is not pressed, this support force makes this keycap remain on higher position, and this plurality of snap fit is connected to this snap-latch surface of this corresponding snap fit seat respectively; And when this keycap is pressed and overcomes this support force and move downward from this higher position, this plurality of snap fit is separated with this snap-latch surface of this corresponding a plurality of snap fit seat respectively, enter in this corresponding a plurality of snap fit through hole.
2. press-key structure as claimed in claim 1, is characterized in that, each snap fit seat of this plurality of snap fit seat is formed at the side of the close keycap of this corresponding snap fit guiding channel.
3. press-key structure as claimed in claim 1, it is characterized in that, the outline of this keycap is identical with the outline profile of this base plate, the center of this keycap of central alignment of this base plate, this base plate also comprises accommodating perforate, this elastomer is placed in this accommodating perforate, and the center making this elastomer align this keycap abuts for this keycap.
4. press-key structure as claimed in claim 1, it is characterized in that, this base plate also comprises a plurality of projection, this circuit board also comprises a plurality of projection through holes corresponding to this plurality of projection configuration, each projection of this plurality of projection is each passed through each projection through hole of this plurality of projection through hole, is combined with this circuit board to make this base plate.
5. press-key structure as claimed in claim 4, it is characterized in that, this plurality of projection is combined with this plurality of projection through hole by the mode of hot melt.
6. press-key structure as claimed in claim 1, it is characterized in that, each snap fit of this plurality of snap fit has two snap fit sides of snap fit face and relative configuration, this snap fit face is relative with this keycap lower surface, and be connected with one of them of this two snap fits side, this two snap fits side is equipped with a plurality of snap fit protuberance, this snap fit guiding channel that this plurality of snap fit protuberance contact is corresponding.
7. press-key structure as claimed in claim 1, it is characterized in that, this base plate lower surface has the first fool-proof mechanism, and this circuit board upper surface has the second fool-proof mechanism, when this first fool-proof mechanism aligns this second fool-proof mechanism of abutting, this base plate and this circuit board could be closely superimposed.
8. press-key structure as claimed in claim 7, it is characterized in that, this first fool-proof mechanism is depressed part, and this second fool-proof mechanism is illuminating module, this depressed part this illuminating module accommodating.
9. press-key structure as claimed in claim 1, it is characterized in that, this keycap also comprises a plurality of guide pillar, this base plate more comprises a plurality of guide pillar hole, this base plate is run through in this plurality of guide pillar hole, and this plurality of guide pillar hole corresponds to this plurality of guide pillar configuration, is arranged at movably in this corresponding a plurality of guide pillar hole to make this plurality of guide pillar.
10. press-key structure as claimed in claim 9, it is characterized in that, this circuit board also comprises a plurality of guide pillar through hole, and this plurality of guide pillar through hole corresponds to this plurality of guide pillar configuration, for each this plurality of guide pillar when this keycap is pressed through this corresponding a plurality of guide pillar through hole.
11. press-key structures as claimed in claim 9, it is characterized in that, each guide pillar of this plurality of guide pillar has center column and a plurality of strip guide pillar protuberance, this a plurality of strip guide pillar protuberance axially extends along this center column, and it is peripheral to be arranged on this center column symmetrically, when making this plurality of guide pillar relative to this plurality of guide pillar hole motion, this plurality of guide pillar hole only touches this plurality of strip guide pillar protuberance, but does not touch this center column.
12. press-key structures as claimed in claim 1, it is characterized in that, this circuit board also comprises plurality of electrodes, this elastomer also has conductor, when this keycap is not pressed, this this conductor elastomeric keeps being separated with this plurality of electrodes, when this keycap is pressed, this keycap presses this elastomer and makes this distortional elastomer, is electrically connected this plurality of electrodes to make this this conductor elastomeric.
13. press-key structures as claimed in claim 1, it is characterized in that, this keycap lower surface also comprises salient point, and this salient point is aligned with this elastomeric central point, for this elastomeric central point of abutting.
14. press-key structures as claimed in claim 1, it is characterized in that, this base plate also has plate upper surface, when this keycap is pressed, this keycap lower surface contacts this plate upper surface, and now the height of this press-key structure on this circuit board is the summation of the thickness of this base plate and the thickness of this keycap.
15. press-key structures as claimed in claim 1, it is characterized in that, this keycap also comprises a plurality of skirt border structure, this a plurality of skirt border structure defines keycap inner space around this keycap lower surface, the size of this base plate is less than the size of this keycap inner space, when this keycap be pressed move downward time, this base plate is received in this keycap inner space, make the lower surface of this plurality of skirt border structure can directly contact this circuit board, and the inner surface of this plurality of skirt border structure and this base plate keep being separated.
16. 1 kinds of input units, comprise a plurality of press-key structure as claimed in claim 15, it is characterized in that, base plate gap is there is between this base plate of two adjacent these press-key structures, and when adjacent two these keycaps are pushed to down to extreme lower position, this plurality of skirt border structure is received in this base plate gap.
17. 1 kinds of press-key structures, is characterized in that, this press-key structure comprises:
Keycap, this keycap has keycap upper surface, keycap lower surface, salient point and a plurality of snap fit, this keycap upper surface is relative with this keycap lower surface, and this plurality of snap fit and this salient point protrude downwards from this keycap lower surface, and the distance between this keycap upper surface and this keycap lower surface is keycap thickness;
Base plate, this base plate has plate upper surface, base plate lower surface, a plurality of snap fit guiding channel, a plurality of snap fit seat and accommodating perforate, this a plurality of snap fit seat is connected to this corresponding a plurality of snap fit guiding channel, this plate upper surface is relative with this base plate lower surface, distance between this plate upper surface and this base plate lower surface is base plate thickness, and each snap fit seat of this plurality of snap fit seat has snap-latch surface;
Circuit board, this circuit board is incorporated into this base plate lower surface, and this circuit board has a plurality of snap fit through hole and plurality of electrodes; And
Elastomer, this elastomer is placed in this accommodating perforate, and covers above this plurality of electrodes;
Wherein, when this keycap is not pressed, this salient point is connected to this elastomer through this accommodating perforate, and this elastomer force makes this keycap remain on higher position, and makes this plurality of snap fit be connected on this snap-latch surface of this corresponding a plurality of snap fit seat respectively; And, when this keycap is pressed, this keycap is moved down into lower position from this higher position, this a plurality of snap fit is made to move downward respectively and be separated with this snap-latch surface of this corresponding a plurality of snap fit seat, and this plurality of snap fit enters in this corresponding a plurality of snap fit through hole respectively, this keycap lower surface contacts with this plate upper surface, and now the height of this press-key structure on this circuit board is the summation of this base plate thickness and this keycap thickness.
18. press-key structures as claimed in claim 17, it is characterized in that, this keycap has square keycap outline, and this base plate has square base plate outline, so when this keycap lower surface contacts with this plate upper surface, this keycap can firmly abut on which floor plate.
19. press-key structures as claimed in claim 17, it is characterized in that, each snap fit of this plurality of snap fit comprises two snap fit guiding faces of snap fit face and relative configuration, this snap fit face is relative with this keycap lower surface, and be connected with this two snap fits guiding face, each snap fit guiding channel of this plurality of snap fit guiding channel has two guiding faces, when this keycap is pressed, this two snap fits guiding face of this each snap fit still keeps abutting with this two guiding face of this each snap fit guiding channel, to guide the relative motion of this keycap between this higher position and this lower position.
20. press-key structures as claimed in claim 17, it is characterized in that, this keycap also comprises a plurality of skirt border structure, this a plurality of skirt border structure defines keycap inner space around this keycap lower surface, the size of this base plate is less than the size of this keycap inner space, when this keycap be pressed move downward time, this base plate is received in this keycap inner space, make the lower surface of this plurality of skirt border structure can directly contact this circuit board, and the inner surface of this plurality of skirt border structure and this base plate keep being separated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918346.4A CN105575704B (en) | 2015-12-11 | 2015-12-11 | Press-key structure and input unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918346.4A CN105575704B (en) | 2015-12-11 | 2015-12-11 | Press-key structure and input unit |
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| CN105575704A true CN105575704A (en) | 2016-05-11 |
| CN105575704B CN105575704B (en) | 2018-08-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604588A (en) * | 2009-07-09 | 2009-12-16 | 旭丽电子(广州)有限公司 | Thin keypressing structure |
| CN201421792Y (en) * | 2009-04-30 | 2010-03-10 | 富港电子（东莞）有限公司 | Key |
| CN103367006A (en) * | 2012-04-05 | 2013-10-23 | 光宝电子(广州)有限公司 | Thin key structure and thin keyboard |
| CN104008911A (en) * | 2014-05-26 | 2014-08-27 | 洪贵顺 | Novel ultra-thin METAL DOME keyboard |
-
2015
- 2015-12-11 CN CN201510918346.4A patent/CN105575704B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201421792Y (en) * | 2009-04-30 | 2010-03-10 | 富港电子（东莞）有限公司 | Key |
| CN101604588A (en) * | 2009-07-09 | 2009-12-16 | 旭丽电子(广州)有限公司 | Thin keypressing structure |
| CN103367006A (en) * | 2012-04-05 | 2013-10-23 | 光宝电子(广州)有限公司 | Thin key structure and thin keyboard |
| CN104008911A (en) * | 2014-05-26 | 2014-08-27 | 洪贵顺 | Novel ultra-thin METAL DOME keyboard |
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| CN105575704B (en) | 2018-08-31 |
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