CN104882318A - Button structure - Google Patents

Button structure Download PDF

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Publication number
CN104882318A
CN104882318A CN201510259742.0A CN201510259742A CN104882318A CN 104882318 A CN104882318 A CN 104882318A CN 201510259742 A CN201510259742 A CN 201510259742A CN 104882318 A CN104882318 A CN 104882318A
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CN
China
Prior art keywords
joint portion
keycap
base plate
balancing pole
press
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510259742.0A
Other languages
Chinese (zh)
Other versions
CN104882318B (en
Inventor
侯柏均
杨淞富
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Darfon Electronics Suzhou Co Ltd
Darfon Electronics Corp
Original Assignee
Darfon Electronics Suzhou Co Ltd
Darfon Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Darfon Electronics Suzhou Co Ltd, Darfon Electronics Corp filed Critical Darfon Electronics Suzhou Co Ltd
Priority to CN201510259742.0A priority Critical patent/CN104882318B/en
Publication of CN104882318A publication Critical patent/CN104882318A/en
Application granted granted Critical
Publication of CN104882318B publication Critical patent/CN104882318B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/02Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12Push-buttons
    • H01H3/122Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/008Actuators other then push button
    • H01H2221/016Lever; Rocker

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  • Push-Button Switches (AREA)

Abstract

The invention relates to a button structure. The button structure comprises a keycap, balance rods, a base plate, and a buffer plate, wherein the keycap comprises combination portions and a lower surface, the combination portions protrude from the lower surface, and when the keycap is pressed, the keycap moves downwardly to a decrease position; the balance rods are connected to the combination portions, and when the keycap is positioned at the decrease position, the lower points of the combination portions are lower than the balance rods; the base plate is arranged below the keycap, the base plate comprises recessed spaces corresponding to the combination portions, the buffer plate is arranged on the base plate, the buffer plate covers the recessed spaces and comprises deformable portions corresponding to the recessed spaces, and when the keycap moves to a lower position towards the base plate, the lower points of the combination portions are abutted against the deformable portions, and the deformable portions extend into the recessed spaces. According to the buffer design of the button structure, buffer elasticity can be provided during button operation, noises generated by direct collision with the base plate of the keycap can be avoided or reduced, and a multilayer structure of a membrane switch forms the buffer design so that the material cost is not increased, and the function of noise reduction can be effectively performed.

Description

Press-key structure
Technical field
The present invention relates to a kind of press-key structure, specifically, the present invention has the press-key structure of quiet design about a kind of and have the key board unit of this press-key structure.
Background technology
The keycap of the multiple key (such as space (Space) key, carriage return (Enter) key, capital and small letter switch (CapsLock) key, displacement (Shift) key etc.) of key board unit has larger length-width ratio, therefore usually can add balancing pole to improve the structural strength of keycap.Moreover, by the setting of balancing pole, even if when user is by the non-middle position being pressed in keycap, multiple key also can be made can not to produce inclination in pressing process.Balancing pole generally engages with the joint portion outstanding from keycap lower surface and is connected to below keycap.When user presses keycap, along with moving down of keycap, joint portion outstanding below usual keycap can occur to clash into base plate and produce noise, and then affects smooth degree and the comfortableness of operation.
Therefore, the noise because keycap shock base plate produces how is effectively eliminated, one of the main themes that reality designs for press-key structure.
Summary of the invention
An object of the present invention is to provide a kind of effective press-key structure eliminating the different sound of operation.
Another object of the present invention is to provide a kind of press-key structure with quiet design, it provides snubber elastomeric when button operation, avoids or reduce the noise that direct collision produces.
Another object of the present invention is to provide a kind of press-key structure with Cushioning Design, and it utilizes the sandwich construction of thin film switch to form Cushioning Design, is not increasing the effect effectively reaching noise abatement under material cost.
In order to achieve the above object, the present invention proposes a kind of press-key structure, comprises keycap, balancing pole, base plate and buffer substrate tablet, and keycap has joint portion and lower surface, and this joint portion is given prominence to from this lower surface; Balancing pole is connected to this joint portion, and the lower extreme point of this joint portion is lower than the coupling part of this balancing pole and this joint portion; Base plate is arranged at below this keycap, and this base plate has dented space, and this dented space is to should joint portion; Buffer substrate tablet is arranged on this base plate, this buffer substrate tablet covers this dented space and this buffer substrate tablet has deformable part, this deformable part is to should dented space, wherein when this keycap is pressed, this keycap moves to down position towards this base plate, this lower extreme point of this joint portion compresses this deformable part, and this deformable part is extended in this dented space.
As optional technical scheme, this dented space is formed by the holes or groove being formed at this base plate.
As optional technical scheme, this buffer substrate tablet is thin film switch, this thin film switch has sandwich construction, at least one deck in this thin film switch this dented space corresponding forms at least one film openings, and at least another layer in this thin film switch covers this at least one film openings to form this deformable part.
As optional technical scheme, this deformable part comprises thin-film groove, and this thin-film groove is made up of this film openings and the part that covers this film openings, and the notch of this thin-film groove is towards this keycap or towards this base plate.
As optional technical scheme, this deformable part comprises two thin-film groove, and the notch of these two thin-film groove is respectively towards this keycap and this base plate.
As optional technical scheme, the gross thickness of this at least another layer covering this at least one film openings in this thin film switch is not more than 0.075mm.
As optional technical scheme, this buffer substrate tablet comprises thin film switch and diaphragm, this thin film switch has through hole, this through hole is to should joint portion, this membrane covered in the below of this through hole as this deformable part, when this keycap moves towards this base plate, this joint portion compresses this diaphragm through this through hole towards this dented space, makes this diaphragm extend into this dented space; Or in the top of this through hole, as this deformable part, when this keycap moves towards this base plate, this joint portion compresses this diaphragm by this through hole towards this dented space to this membrane covered, makes this diaphragm extend into this dented space.
As optional technical scheme, this diaphragm is polyester sheet or sheet rubber, and the thickness of this diaphragm is less than the thickness of this thin film switch.
As optional technical scheme, this balancing pole comprises the first balancing pole and the second balancing pole, this joint portion comprises the first joint portion and the second joint portion, this first joint portion connects this first balancing pole, this second joint portion connects this second balancing pole, this second balancing pole is arranged at the outside of this first balancing pole and this second balancing pole is connected to this keycap and this base plate, and wherein the length of this first joint portion is more than or equal to the length of this second joint portion.
As optional technical scheme, the both ends section that this first balancing pole has interlude and extends from these interlude two ends, this both ends section and this interlude form U-shaped section, and the length being connected to this first joint portion of this interlude is greater than the length of this first joint portion being connected to this end segments.
As optional technical scheme, when this keycap is positioned at this down position, this lower extreme point of this joint portion is lower than this balancing pole.
As optional technical scheme, when this keycap is positioned at this down position, this lower extreme point of this joint portion is lower than this balancing pole, and this balancing pole is connected to this keycap and this base plate.
The present invention, by the Cushioning Design of press-key structure, can provide snubber elastomeric when button operation, avoids or reduce the noise that keycap direct collision base plate produces.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Figure 1A and Figure 1B is respectively explosive view and the unit assembly drawing of the press-key structure of one embodiment of the invention;
Schematic cross-section before Fig. 1 C and Fig. 1 D is respectively the press-key structure pressing of Figure 1A and after pressing;
Fig. 2 A and Fig. 2 B is the schematic diagram of the joint portion of different embodiments of the invention;
Fig. 3 is the schematic diagram of the base plate of another embodiment of the present invention;
Fig. 4 A to Fig. 4 E is the schematic diagram of thin film switch as buffer substrate tablet of different embodiments of the invention;
Fig. 5 A and Fig. 5 B is the schematic diagram of the buffer substrate tablet of different embodiments of the invention;
Fig. 6 A and Fig. 6 B is respectively explosive view and the unit assembly drawing of the press-key structure of another embodiment of the present invention;
Schematic cross-section before Fig. 6 C and Fig. 6 D is respectively the press-key structure pressing of Fig. 6 A and after pressing;
Fig. 7 A and Fig. 7 B is respectively explosive view and the unit assembly drawing of the press-key structure of another embodiment of the present invention;
Schematic cross-section before Fig. 7 C and Fig. 7 D is respectively the press-key structure pressing of Fig. 7 A and after pressing;
Fig. 8 A and Fig. 8 B is the schematic diagram of the joint portion of different embodiments of the invention; And
Fig. 9 is the schematic diagram of the key board unit of one embodiment of the invention.
Embodiment
The invention provides and a kind ofly there is the press-key structure of quiet design and there is the key board unit of this press-key structure.Specifically, press-key structure of the present invention can be the press-key structure of computor-keyboard, but not as.Press-key structure of the present invention can be the button, numerical key etc. of other electronic installations.Press-key structure of the present invention can be any press-key structure with joint portion, especially has the press-key structure of the joint portion be connected with balancing pole, such as multiple key, but not as limit.In after for computor-keyboard, with reference to the details of the press-key structure of the graphic detailed description embodiment of the present invention.
As shown in Figure 1A and Fig. 6 A, in an embodiment, press-key structure 100/200 of the present invention comprises keycap 110, balancing pole 122/124, base plate 130 and buffer substrate tablet 140, and wherein keycap 110 is arranged at above base plate 130, and can move relative to base plate 130 up/down.Balancing pole 122 connects keycap 110, and balancing pole 122/124 generally has two effects: (1) as shown in Figure 1A, strengthen the structural strength of keycap 110, or (2) as shown in Figure 6A, improves the drive of keycap 110.So when user only presses on the right side of keycap, also can decline together on the left of keycap simultaneously, avoid keycap 110 to present right side lower, the heeling condition that left side is higher.Buffer substrate tablet 140 is arranged on base plate 130, the collision buffering (as described later in detail) when moving down towards base plate 130 to provide keycap 110.Should be noted at this, though Figure 1A and Figure 1B does not illustrate, but according to actual design demand, press-key structure 100 also can comprise other parts, such as support keycap 110 relative to the movement of base plate 130 up/down elevating mechanism (such as scissors lift mechanism, butterfly elevating mechanism), provide keycap 110 to press after be returned to the reply unit (such as elastic recovery unit or magnetic reply unit) etc. of pressing front position.
In Figure 1A embodiment, balancing pole 122 is only connected to keycap 110, to increase the intensity of keycap 110.Balancing pole 122 is preferably non-enclosed shaped as frame bar, such as, between two ends, have the rectangle frame balancing pole of opening 122a, to increase the elastomeric deformable of balancing pole 122, and then promotes convenience when balancing pole 122 is connected with keycap 110.Moreover balancing pole 122 is better to be had circular shaft and can be bent into by metal wire, but not as limit.In other embodiments, according to design requirement, balancing pole 122 can have the shaft of ellipse, the shape such as square, and can make the intensity of promoting keycap 110 by any suitable material.
Correspondingly, keycap 110 has joint portion 112, for connection balancing pole 122.In this embodiment, keycap 110 has a plurality of joint portion 112, and wherein the shaped as frame profile of the corresponding balancing pole 122 in a plurality of joint portion 112 is arranged at the lower surface 110a of keycap 110, to connect the corresponding shaft part of balancing pole 122 respectively.In other words, a plurality of joint portion 112 is arranged at the lower surface 110a of keycap 110 in the mode that shaped as frame distributes.Moreover joint portion 112 is given prominence to from the lower surface 110a of keycap 110.Specifically, as shown in Figure 2 A, keycap 110 formed by key top 111a and around the key skirt 111b of connecting key top 111a periphery, wherein joint portion 112 extends downward beyond the basal surface of key skirt 111b from the lower surface 110a of key top 111a, and makes the lower extreme point of joint portion 112 give prominence to the basal surface of key skirt 111b.
In an embodiment, as shown in Figure 2 A, joint portion 112 is for having the coupler construction of draw-in groove 112a, and draw-in groove 112a has draw-in groove opening 112b in coupler construction end (namely away from one end of lower surface 110a), the shaft for balancing pole 122 enters draw-in groove 112a to be connected with joint portion 112.When balancing pole 122 enters draw-in groove 112a from draw-in groove opening 112b and engages with draw-in groove 112a, the lower extreme point of joint portion 112 is lower than the lower extreme point of balancing pole 122.In other words, in this embodiment, the degree of depth (distance namely bottom joint portion end to draw-in groove) of draw-in groove 112a is greater than bar footpath or the thickness (dimension measured with the line direction of base plate 130 by keycap 110 of balancing pole 122, the i.e. dimension of vertical direction), be placed in completely in draw-in groove 112a to make the shaft essence of balancing pole 122.That is the not outstanding draw-in groove 112a of the part essence that balancing pole 122 is connected with joint portion 122, makes the lower extreme point of joint portion 112 lower than the coupling part of balancing pole 122 with joint portion 112.In this embodiment, the bore of draw-in groove opening 112b is preferably the bar footpath (i.e. the dimension of horizontal direction) being less than balancing pole 122.By this, when balancing pole 122 enter draw-in groove 122a connect joint portion 112 time, can limiting balance bar 122 towards the movement in draw-in groove opening 112b direction, avoid balancing pole 122 and joint portion 112 to depart from.Moreover joint portion 112 defines that the sidewall of draw-in groove 112a is better has suitable thickness to provide the elasticity of distortion, promote the connection convenience of balancing pole 122 and joint portion 112.In other words, when balancing pole 122 enters draw-in groove 112a from draw-in groove opening 112b, joint portion 112 defines the sidewall of draw-in groove 112a can outside elastic dilatation, enters draw-in groove 112a in order to balancing pole 122.
Should be noted at this, though it is enter draw-in groove 112a to be connected with joint portion 112, not as limit from the end (i.e. bottom surface) of joint portion 112 that the embodiment of Fig. 2 A illustrates balancing pole 122.In other embodiments, as shown in Figure 2 B, draw-in groove opening 112b ' can be opened in the side of joint portion 112 ', and makes balancing pole 122 be enter draw-in groove 112a ' from the side of joint portion 112 ' to be connected with joint portion 112 '.
Moreover base plate 130 is arranged at below keycap 110, and base plate 130 has the joint portion 112 of the corresponding keycap 110 of dented space 132.In this embodiment, dented space 132 is preferably the holes (as shown in Figure 1 C) being formed at base plate 130 and forms, but not as limit.In other embodiments, as shown in Figure 3, dented space 132 ' can be the groove being formed at base plate 130 and formed.When keycap 110 moves towards base plate 130, dented space 132 dodges district as joint portion 112, and dented space 132 is stretched in tolerable joint portion 112.In this embodiment, base plate 130 is metallic plate, but not as limit.
As shown in Figure 1B and Fig. 1 C, buffer substrate tablet 140 is arranged on base plate 130, and wherein buffer substrate tablet 140 essence covers dented space 132, and buffer substrate tablet 140 has the corresponding dented space 132 of deformable part 142.Generally can by change thickness, material, or profile, provide moderate finite deformation amount to form the deformable part 142 on buffer substrate tablet 140.Such as: deformable part 142 can be the relative thin location of (a) thickness, (b) injection or stickup combine comparatively flexible material place, or (c) has more yielding profile place, as: the movable tongue that three limits cut off.
Specifically, in preferred embodiment, the deformable part 142 of buffer substrate tablet 140 is the part that thickness is relatively thin, deformable part 142 is made to have larger elastic deformation force compared to other parts of buffer substrate tablet 140, and the design of deformable part 142 can make buffer substrate tablet 140 entirety not because thickness is too thin and damaged, increase manufacturability.In this embodiment, the thickness of deformable part 142 is better is not more than 0.075mm, but not as limit.The deformable part 142 of buffer substrate tablet 140 is preferably and is covered in dented space 132, and the remainder of buffer substrate tablet 140 (i.e. the part of non-deformable part) is covered in the backplate surface around dented space 132, the buffering making deformable part 142 provide the joint portion 112 of keycap 110 by strain to move down, to reach effect of noise abatement.As shown in figure ip, when keycap 110 is pressed, keycap 110 can be moved down into lower position and (or be called down position, lower same), namely when keycap 110 moves to lower position towards base plate 130, the lower extreme point of joint portion 112 is lower than balancing pole 122, and the lower extreme point of joint portion 112 compresses deformable part 142 towards dented space 132, and then deformable part 142 is extended in dented space 132.Specifically, when keycap 110 moves towards base plate 130, joint portion 112 because of the deformable part 142 of the key skirt 111b basal surface and first collision buffering sheet 140 that protrude from keycap 110, and then makes deformable part 142 distortion downwards and enters the dented space 132 of base plate 130.By this, under the condition not increasing button height, not only make the joint portion 112 of keycap 110 have and enough move downward space, allow the deformable part 142 of buffer substrate tablet 140 abut joint portion 112 reaches noise abatement effect as buffering elastomer simultaneously.
In preferred embodiment, buffer substrate tablet 140 is thin film switch, and wherein thin film switch forms blind hole using as deformable part 142 for part hollows out.Specifically, thin film switch has sandwich construction, and the corresponding dented space 132 of at least one deck wherein in thin film switch forms at least one film openings and at least another layer of essence in thin film switch covers at least one film openings using as deformable part 142.In other words, in thin film switch, essence covers that the gross thickness of at least another layer (i.e. deformable part) of at least one film openings is better is not more than 0.075mm.
For example, in an embodiment, as shown in Figure 4 A, thin film switch 140a is three-decker, wherein ground floor 144 and third layer 148 are circuit layer, and the second layer 146 is arranged at as intermediary layer between ground floor 144 and third layer 148, to separate the circuit of ground floor 144 and third layer 148.When keycap 110 moves actuating thin film switch 140a towards base plate 130, the electrical contact conducting of ground floor 144 and third layer 148, to export actuated signal.In this embodiment, the ground floor 144 of thin film switch 140a and the second layer 146 form film openings 144a, 146a in the part of corresponding dented space 132, wherein film openings 144a, 146a is communicated with, and third layer 148 is covered in the below of film openings 146a, to be formed in deformable part 142, wherein deformable part 142 comprises the thin-film groove being positioned at upside, and wherein the notch of thin-film groove is towards keycap 110 (namely to the form of lower recess).In other words, the thickness of third layer 148 is the thickness of deformable part 142, and the part of third layer 148 corresponding film openings 144a, 146a is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.
Should be noted at this, when buffer substrate tablet is thin film switch, by the sandwich construction characteristic of thin film switch, deformable part 142 can have multi-form, is not limited shown in Fig. 4 A.In another embodiment, as shown in Figure 4 B, the ground floor 144 of thin film switch 140b and third layer 148 form film openings 144a, 148a in the part of corresponding dented space 132, and wherein film openings 144a, 148a is not communicated with and separates by the second layer 146.In other words, the second layer 146 is covered in the opposite sides of film openings 144a, 148a, to be formed in deformable part 142, wherein deformable part 142 comprises two thin-film groove being positioned at up/down both sides, the notch of the thin-film groove be wherein made up of the film openings 144a of ground floor 144 and the cover part of the second layer 146 is towards keycap 110 (namely to the form of lower recess), and the notch of the thin-film groove be made up of the film openings 148a of third layer 148 and the cover part of the second layer 146 is towards base plate 130 (form namely upwards caved in).In this embodiment, the thickness of the second layer 146 is the thickness of deformable part 142, and the part of the second layer 146 corresponding film openings 144a, 148a is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.
In another embodiment, as shown in Figure 4 C, the second layer 146 of thin film switch 140c and third layer 148 form film openings 146a, 148a in the part of corresponding dented space 132, wherein film openings 146a, 148a is communicated with, and ground floor 144 is covered in the top of film openings 146a, to be formed in deformable part 142, wherein deformable part 142 comprises the thin-film groove being positioned at downside, and wherein the notch of thin-film groove is towards base plate 130.In other words, the thickness of ground floor 144 is the thickness of deformable part 142, and the part of ground floor 144 corresponding film openings 146a is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.
In another embodiment, as shown in Figure 4 D, the ground floor 144 of thin film switch 140d forms film openings 144a in the part of corresponding dented space 132, and the second layer 146 and third layer 148 are covered in the below of film openings 144a, to be formed in deformable part 142, wherein deformable part 142 comprises the thin-film groove being positioned at upside, and wherein the notch of thin-film groove is towards keycap 110.In other words, the gross thickness of the second layer 146 and third layer 148 is the thickness of deformable part 142, goodly be not more than 0.075mm, and the part of the second layer 146 and third layer 148 corresponding film openings 144a is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.
In another embodiment, as shown in Figure 4 E, the third layer 148 of thin film switch 140e forms film openings 148a in the part of corresponding dented space 132, and ground floor 144 and the second layer 146 are covered in the top of film openings 148a, to be formed in deformable part 142, wherein deformable part 142 comprises the thin-film groove being positioned at downside, and wherein the notch of thin-film groove is towards base plate 130.In other words, the gross thickness of ground floor 144 and the second layer 146 is the thickness of deformable part 142, goodly be not more than 0.075mm, and the part of ground floor 144 and the second layer 146 corresponding film openings 148a is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.
In other embodiments, as shown in Fig. 5 A and Fig. 5 B, buffer substrate tablet 140 comprises thin film switch 140f and diaphragm 141, and wherein thin film switch 140f has the corresponding joint portion 112 of through hole 149, and diaphragm 141 is covered in through hole 149 side as deformable part 142.By this, when keycap 110 moves towards base plate, joint portion 112 compresses diaphragm 141 by through hole 149, makes diaphragm 141 extend into dented space 132.Specifically, in the embodiment of Fig. 5 A, diaphragm 141 is covered in below through hole 149 as deformable part 142, so when keycap 110 moves towards base plate 130, joint portion 112 compresses diaphragm 141 through through hole 149 towards dented space 132, makes diaphragm 141 extend into dented space 132 (being similar to Fig. 1 D).Thin film switch 140f can have similar above-mentioned sandwich construction, wherein form film openings 144a, 146a, 148a respectively in the corresponding dented space 132 of ground floor 144, the second layer 146 and third layer 148, and film openings 144a, 146a, 148a are communicated with formation through hole 149.In the embodiment of Fig. 5 A, diaphragm 141 is covered in below through hole 149 and (is namely covered in below third layer 148), the part (i.e. the part of corresponding through hole 149) that diaphragm 141 is covered in through hole 149 is above-mentioned deformable part 142, using as the buffering elastomer contacted with joint portion 112.In the embodiment of Fig. 5 B, diaphragm 141 is covered in above through hole 149 and (is namely covered in above ground floor 144) as deformable part 142, diaphragm 141 like this for a plurality of elastomers (rubberdome) be provided with needed for a plurality of keycap of keyboard, once can install to all a plurality of elastomer group above base plate to facilitate.That is diaphragm 141 can be and connects a plurality of elastomeric lamellar body.In the embodiment of Fig. 5 B, when keycap 110 moves towards base plate 130, joint portion 112 compresses diaphragm 141 by through hole 149 towards dented space 132, makes diaphragm 141 extend into dented space 132.In an embodiment, diaphragm 141 can be polyester sheet or sheet rubber, and the better thickness being less than thin film switch 140f of the thickness of diaphragm 141.For example, diaphragm 141 can be mylar film (Mylar), and thickness is preferably and is less than 0.075mm, but not as limit.Should be noted at this, when the material of deformable part 142 itself has moderate finite deformation elasticity, the thickness of deformable part 142 can be greater than 0.075mm and collide with joint portion 112 and still can produce above-mentioned strain.
In addition, though Figure 1A illustrates balancing pole 122 be only connected to keycap 110, according to button size and/or design requirement, balancing pole can have multi-form and quantity.In another embodiment, as shown in Fig. 6 A to Fig. 6 C, press-key structure 200 of the present invention comprises keycap 110, balancing pole 124, base plate 130 and buffer substrate tablet 140, wherein keycap 110, base plate 130 and buffer substrate tablet 140 have the configuration of similar above-mentioned joint portion, dented space 132, deformable part 142 respectively, and buffer substrate tablet 140 can be embodied as the thin film switch 140a-140e of above-mentioned Fig. 4 A to Fig. 4 E, or the diaphragm 141 of Fig. 5 and thin film switch 140f.In after explanation focus on the present embodiment difference.Specifically, balancing pole 124 is connected between keycap 110 and base plate 130, that is balancing pole 124 side is connected to keycap 110, and opposite side is connected to base plate 130, to improve the drive of keycap 110; So when user only presses on the right side of keycap, also can decline together on the left of keycap simultaneously, avoid keycap 110 to present right side lower, the heeling condition that left side is higher.In this embodiment, balancing pole 124 is U-shaped bar, and has the extension 124a towards the bending of U-shaped opening in U-shaped two ends, and wherein extension 124a is as the snap fit engaged slidably with base plate 130.Specifically, base plate 130, except above-mentioned dented space 132, also has the connecting portion 134 engaged with the extension 124a of balancing pole 124.In this embodiment, connecting portion 134 is the bindiny mechanism upwards bent from base plate 130 surface, and wherein connecting portion 134 has chute 134a.Should be noted at this, buffer substrate tablet 140 has corresponding opening 143, to allow that connecting portion 134 stretches out from opening 143, inserts slidably in chute 134a to make the extension 124a of balancing pole 124.When keycap 110 moves relative to base plate 130, extension 124a moves in chute 134a, to promote the balance of keycap 110 movement.Corresponding to the configuration of balancing pole 124, keycap 110 has corresponding joint portion 114, for connection balancing pole 124.In this embodiment, the corresponding balancing pole 124 in a plurality of joint portion 114 is arranged at the lower surface 110a of keycap 110, to connect the corresponding shaft part of balancing pole 124 respectively.Be similar to above-mentioned joint portion 112, joint portion 114 is given prominence to from the lower surface 110a of keycap 110, and the lower extreme point of joint portion 114 gives prominence to the basal surface of key skirt.Should be noted at this, joint portion 114 can have the coupler construction being similar to Fig. 2 A or Fig. 2 B, and makes the lower extreme point of joint portion 114 lower than the lower extreme point of balancing pole 124, repeats no more in this.As shown in Figure 6 D, (or down position is called when keycap 110 moves to lower position towards base plate 130, lower same) time, the lower extreme point of joint portion 114 is lower than balancing pole 124, and the lower extreme point of joint portion 114 compresses deformable part 142 towards dented space 132, and then deformable part 142 is made to extend into dented space 132.By this, the joint portion 114 of keycap 110 is had and enough moves downward space, allow the deformable part 142 of buffer substrate tablet 140 abut joint portion 114 reaches noise abatement effect as buffering elastomer simultaneously.
In another embodiment, as shown in Fig. 7 A to Fig. 7 C, press-key structure 300 of the present invention comprises keycap 110, balancing pole 122,124 (or balancing pole 122 is called the first balancing pole, balancing pole 124 is called the second balancing pole, lower with), base plate 130 and buffer substrate tablet 140.In other words, press-key structure 300 of the present invention has the balancing pole 122 of Figure 1A and the balancing pole 124 of Fig. 6 A simultaneously, and keycap 110 has plural joint portion 112,114 (or joint portion 112 is called the first joint portion, joint portion 114 is called the second joint portion, first joint portion 112 connects the first balancing pole 122, second joint portion 114 connects the second balancing pole 124, lower same).In this embodiment, balancing pole 124 is preferably the outside being arranged at balancing pole 122, using as the connecting rod between keycap 110 and base plate 130.Moreover, the dented space 132 of base plate 130 and the deformable part 142 of buffer substrate tablet 140 can have suitable size and position, and make contiguous joint portion 112,114 can compress the different piece of same deformable part 142 and then make deformable part 142 distortion extend into same depression space 132 (as illustrated in fig. 7d), but not as limit.In other embodiments, the dented space 132 of base plate 130 and the deformable part 142 of buffer substrate tablet 140 can to form with joint portion 112,114 that other is corresponding, different deformable part 142 can be compressed with joint portion 112,114, and then make deformable part 142 be out of shape the dented space 132 extending into correspondence.
In addition, in an embodiment, as shown in Figure 8 A, balancing pole 122 is better has curved section, makes the interlude 122b of balancing pole 122 lower than both ends section 122c.Specifically, the both ends section 122c that balancing pole 122 has interlude 122b and extends from interlude 122b two ends, and both ends section 122c and interlude 122b forms U-shaped section.Corresponding to this, the length that keycap 110 is connected to the joint portion 1121 of interlude 122b is greater than the length of the joint portion 1122 being connected to end segments 122c, wherein the position that arranges, joint portion 1121 comparatively joint portion 1122 close to keycap 110 central authorities.That is joint portion 1121 is greater than joint portion 1122 from keycap 110 lower surface to the distance of the bottom of draw-in groove 1122a from keycap 110 lower surface to the distance of the bottom of draw-in groove 1121a, possesses U-shaped section to make balancing pole 122.
Moreover the length connecting the joint portion 112 (that is first joint portion 112) of balancing pole 122 is preferably and is greater than (as shown in Figure 8 B) or equals the length that (as seen in figure 7 c) connects the joint portion 114 (that is second joint portion 114) of outside balancing pole 124.That is the joint portion (such as joint portion 112) inside the lower surface 110a being arranged at keycap 110 has the length of the joint portion (such as joint portion 114) being more than or equal to outside.
In another embodiment, as shown in Figure 9, the invention provides a kind of key board unit 10, it comprises above-mentioned press-key structure 100,200 and/or 300.Key board unit 10 of the present invention, by the Cushioning Design of press-key structure 100,200 or 300, can provide snubber elastomeric when button operation, avoids or reduce the noise that keycap direct collision base plate produces.Moreover key board unit 10 of the present invention forms Cushioning Design by the sandwich construction of the thin film switch of press-key structure, is not increasing the effect that effectively can reach noise abatement under material cost.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.

Claims (12)

1. a press-key structure, is characterized in that comprising:
Keycap, has joint portion and lower surface, and this joint portion is given prominence to from this lower surface;
Balancing pole, is connected to this joint portion, and the lower extreme point of this joint portion is lower than the coupling part of this balancing pole and this joint portion;
Base plate, be arranged at below this keycap, this base plate has dented space, and this dented space is to should joint portion; And
Buffer substrate tablet, is arranged on this base plate, and this buffer substrate tablet covers this dented space and this buffer substrate tablet has deformable part, this deformable part to should dented space,
Wherein when this keycap is pressed, this keycap moves to down position towards this base plate, and this lower extreme point of this joint portion compresses this deformable part, and this deformable part is extended in this dented space.
2. press-key structure according to claim 1, is characterized in that: this dented space is formed by the holes or groove being formed at this base plate.
3. press-key structure according to claim 1, it is characterized in that: this buffer substrate tablet is thin film switch, this thin film switch has sandwich construction, at least one deck in this thin film switch this dented space corresponding forms at least one film openings, and at least another layer in this thin film switch covers this at least one film openings to form this deformable part.
4. press-key structure according to claim 3, is characterized in that: this deformable part comprises thin-film groove, and this thin-film groove is made up of this film openings and the part that covers this film openings, and the notch of this thin-film groove is towards this keycap or towards this base plate.
5. press-key structure according to claim 3, is characterized in that: this deformable part comprises two thin-film groove, and the notch of these two thin-film groove is respectively towards this keycap and this base plate.
6. press-key structure according to claim 3, is characterized in that: the gross thickness of this at least another layer covering this at least one film openings in this thin film switch is not more than 0.075mm.
7. press-key structure according to claim 1, is characterized in that: this buffer substrate tablet comprises thin film switch and diaphragm, and this thin film switch has through hole, this through hole to should joint portion,
This membrane covered is in the below of this through hole as this deformable part, and when this keycap moves towards this base plate, this joint portion compresses this diaphragm through this through hole towards this dented space, makes this diaphragm extend into this dented space;
Or in the top of this through hole, as this deformable part, when this keycap moves towards this base plate, this joint portion compresses this diaphragm by this through hole towards this dented space to this membrane covered, makes this diaphragm extend into this dented space.
8. press-key structure according to claim 7, is characterized in that: this diaphragm is polyester sheet or sheet rubber, and the thickness of this diaphragm is less than the thickness of this thin film switch.
9. press-key structure according to claim 1, it is characterized in that: this balancing pole comprises the first balancing pole and the second balancing pole, this joint portion comprises the first joint portion and the second joint portion, this first joint portion connects this first balancing pole, this second joint portion connects this second balancing pole, this second balancing pole is arranged at the outside of this first balancing pole and this second balancing pole is connected to this keycap and this base plate, and wherein the length of this first joint portion is more than or equal to the length of this second joint portion.
10. press-key structure according to claim 9, it is characterized in that: the both ends section that this first balancing pole has interlude and extends from these interlude two ends, this both ends section and this interlude form U-shaped section, and the length being connected to this first joint portion of this interlude is greater than the length of this first joint portion being connected to this end segments.
11. press-key structures according to claim 1, is characterized in that: when this keycap is positioned at this down position, and this lower extreme point of this joint portion is lower than this balancing pole.
12. press-key structures according to claim 1, is characterized in that: when this keycap is positioned at this down position, and this lower extreme point of this joint portion is lower than this balancing pole, and this balancing pole is connected to this keycap and this base plate.
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CN107492461A (en) * 2017-07-25 2017-12-19 苏州达方电子有限公司 Press-key structure
TWI623954B (en) * 2017-01-06 2018-05-11 致伸科技股份有限公司 Keyboard
CN110391104A (en) * 2018-04-20 2019-10-29 致伸科技股份有限公司 Key board unit and its manufacturing method
CN110471565A (en) * 2019-02-21 2019-11-19 光宝电子(广州)有限公司 Touch device
CN110600308A (en) * 2019-09-04 2019-12-20 苏州达方电子有限公司 Key with noise reduction effect
CN110828216A (en) * 2018-08-10 2020-02-21 致伸科技股份有限公司 Keyboard with mute function and key structure thereof
CN111261442A (en) * 2020-02-14 2020-06-09 光宝科技(常州)有限公司 Key structure
CN111710547A (en) * 2019-09-21 2020-09-25 光宝电子(广州)有限公司 Key structure
CN111739753A (en) * 2019-06-17 2020-10-02 光宝电子(广州)有限公司 Key module
CN111816244A (en) * 2020-07-20 2020-10-23 中磊电子(苏州)有限公司 Key module and electronic device using same
CN113299511A (en) * 2020-08-10 2021-08-24 光宝科技股份有限公司 Key structure
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Publication number Priority date Publication date Assignee Title
TWI623954B (en) * 2017-01-06 2018-05-11 致伸科技股份有限公司 Keyboard
CN107492461A (en) * 2017-07-25 2017-12-19 苏州达方电子有限公司 Press-key structure
CN110391104A (en) * 2018-04-20 2019-10-29 致伸科技股份有限公司 Key board unit and its manufacturing method
CN110828216A (en) * 2018-08-10 2020-02-21 致伸科技股份有限公司 Keyboard with mute function and key structure thereof
CN110471565A (en) * 2019-02-21 2019-11-19 光宝电子(广州)有限公司 Touch device
CN111739753A (en) * 2019-06-17 2020-10-02 光宝电子(广州)有限公司 Key module
US12046426B2 (en) 2019-06-17 2024-07-23 Lite-On Electronics (Guangzhou) Limited Key module
US11424091B2 (en) 2019-06-17 2022-08-23 Lite-On Electronics (Guangzhou) Limited Key module
CN110600308A (en) * 2019-09-04 2019-12-20 苏州达方电子有限公司 Key with noise reduction effect
CN110600308B (en) * 2019-09-04 2022-06-10 苏州达方电子有限公司 Key with noise reduction effect
CN111710547A (en) * 2019-09-21 2020-09-25 光宝电子(广州)有限公司 Key structure
CN111261442B (en) * 2020-02-14 2023-11-21 光宝科技(常州)有限公司 Key structure
CN111261442A (en) * 2020-02-14 2020-06-09 光宝科技(常州)有限公司 Key structure
CN111816244A (en) * 2020-07-20 2020-10-23 中磊电子(苏州)有限公司 Key module and electronic device using same
CN113299511A (en) * 2020-08-10 2021-08-24 光宝科技股份有限公司 Key structure
WO2022068538A1 (en) * 2020-09-29 2022-04-07 华为技术有限公司 Electronic device, keyboard, and electronic device assembly

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