CN105009243B - Pushbutton switch - Google Patents
Pushbutton switch Download PDFInfo
- Publication number
- CN105009243B CN105009243B CN201480011476.3A CN201480011476A CN105009243B CN 105009243 B CN105009243 B CN 105009243B CN 201480011476 A CN201480011476 A CN 201480011476A CN 105009243 B CN105009243 B CN 105009243B
- Authority
- CN
- China
- Prior art keywords
- key switch
- substrate
- region
- cap
- groove
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
-
- 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
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
-
- 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
- H01H13/70—Switches 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
- H01H13/86—Switches 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 characterised by the casing, e.g. sealed casings or casings reducible in size
Abstract
The invention relates to a pushbutton switch having a pushbutton switch cap (1a), which is mounted on a base plate (4) and is composed of an integrally flexible material, wherein the pushbutton switch cap (1a) comprises a central pressure region (2), which has a projection (1b) in the direction towards the base plate (4), wherein a contact area (1c) which can be brought into electrical contact with at least two contact points (5), which are arranged on the base plate (4), is arranged in the region of the projection (1b), comprises a deformation region (3) which surrounds the central pressure region (2) and is connected to said central pressure region, and comprises a basic contour (6) which is connected to the deformation region (3) and by way of which the pushbutton switch cap (1a) is connected to the base plate (4), and wherein the pushbutton switch (1); can be switched between an inoperative position (R) and a switching position (S) by exerting a push-down force (F) onto the central pressure region (2). A sealing region (8) which is connected to the basic contour (6) and engages with an accurate fit into a groove (7) which is formed in the base plate (4) is present, and the quantity of air which is included by the pushbutton switch cap (1a) and the base plate (4) is of equal magnitude in the inoperative position (R) and in the switching position (S).
Description
Technical field
The present invention relates to a kind of key switch.
Background technology
By a kind of known key switch cap of US 39 32 722, wherein, switching process is by the form of rubber-like to cut
The deflating cap of cone or vault realizing, wherein, switching process has and fastens or process (Schnapp-oder of fluttering
Klappvorgang).The known deflating cap is made up of the material of the rubber-like of integral type, and mainly has four regions.
There is raised center area pressed to be surrounded and be connected with the first annular region by first annular region in direction towards substrate.Structure
The second annular region for making the outside for deformed region is connected with first annular region.It is adjacent with second annular region and therewith
Outer basic ring is provided with connection, on outer basic ring, deflating cap is arranged on the substrate of switch.Additionally, setting in raised region
It is equipped with least two contact surfaces that can form electrical contact each other.The action principle of known deflating cap is run as follows, i.e.
In the power for applying to push button, weaker first annular region is deformed inward.Here, first annular region remains in that first
The moulding for externally hollowly constructing.When further pressing on, used as the process of fastening, bending moulding is anti-suddenly from convex ground is recessed to
Turn.In further pressing keys, electric interface is and then caused to contact with each other.
By known in 31 22 456C2 of DE by made by the material of integral type another deflating cap, which substantially builds and
On the basis of deflating cap from US 39 32 722.In the deflating cap, in the presence of the power for pressing center area pressed,
First annular regional structure is the second deformation zone domain for implementing fastening process, and the second annular region is configured to primary deformation zone
Domain.The action principle of the deflating cap is run as follows, i.e. exceed yardstick in the operating physical force being applied on the area pressed of center
In the case of, it is subjected to flexural deformation as the first annular region in second deformation zone domain, wherein, the fastening process expected and want
Occur in second deformation zone domain (first annular region).In order to guarantee in the case of using finger-tip operated it is soft extruding and
The initial position of deflating cap is elastically returned to, air outlet opening is provided with deflating cap.
Another deflating cap is by known in 2 112 577A of GB.The deflating cap is equally made up of the material of the rubber-like of integral type,
And mainly there is following region：There is raised center area pressed towards orientation substrate, its by annular region surround and with this
Annular region connects.Basic ring is connected with annular region, and on basic ring, deflating cap is arranged on the substrate of switch.Annular region point
For the region of heavy wall pipe thin-walled.The rib pointed to towards orientation substrate of annular is disposed between these regions.The region position of heavy wall
Between the area pressed of Lei Yu centers.The region of thin-walled is located between rib and basic ring.In operation during heart area pressed, rib is first
Contact with substrate.In the case where further pressing on, there is fastening process in the region of thin-walled and heavy wall, this fastened
Journey makes rib leave bottom surface, and center area pressed is contacted with substrate.In order to ensure being elastically returned to the initial bit of deflating cap
Put, and easier air exchange between the inner region in space and exterior domain in order to ensure surrounding in deflating cap, in switch
Air outlet opening is provided with cap.
The shortcoming of air outlet opening is：Dampness can penetrate into and be switched on and off in the volume of cap encirclement, and therefore may lead
Cause contact corrosion.
The content of the invention
The task of the present invention is to provide a kind of key switch with key switch cap, and which is guaranteeing to be switched on and off cap in operation
While the space surrounded with substrate is airtight in each on-position, also ensures soft extruding and be elastically returned to out
Close the initial position of cap.
The task is solved by following key switch, and the key switch is flexible by integral type on substrate with being installed in
Material made by key switch cap, wherein, key switch cap includes：Center area pressed, which has on the direction towards substrate
There is projection, wherein, be disposed with raised region the formation electrical contact of the contact point on substrate can be arranged in at least two
Contact surface；Encirclement center area pressed the deformed region being attached thereto；The base profile portion being connected with deformed region, button are opened
Close cap and utilize base profile portion and substrate connection, and wherein, by being applied to by exerting oneself on the area pressed of center, button is opened
Close and switch between position and on-position not working, it is characterised in that there are the sealing being connected with base profile portion
Region, is embedded in its accurately mate in the groove implemented in a substrate, and is existed by the air capacity that key switch cap and substrate are surrounded
The position that do not work is big as in on-position being, and wherein, sealing area is with an end and base profile
Portion is connected and the cylinder body shape in groove is stretched into the other end.
Hereinafter, favourable design is described.
The present invention is installed in the key switch of the key switch cap on substrate from band, and the key switch cap is by integral type
Flexible material is made.Flexible material here can be rubber or flexible plastic.
Key switch cap includes center area pressed, and which has projection towards the direction of substrate, wherein, in raised region
Be disposed with the contact surface that the contact point on substrate forms electrical contact can be arranged in at least two.Additionally, key switch cap includes
The deformed region and the base profile being connected with deformed region of encirclement center area pressed Bing Yugai centers area pressed connection
Portion, key switch cap utilize the base profile portion and substrate connection.Here, by center area pressed will be applied to by exerting oneself
On, key switch switch between position and on-position not working.
Additionally, being also understood to for the housing of one or more electric conductor traces, such as lead frame or circuit board
Substrate, which has portion of leaving a blank in the region of the projection of center area pressed.In the presence of by exerting oneself, the projection can be passed through
Guide on the electric conductor trace surrounded by housing in the portion of leaving a blank for implementing in the housing.
Additionally, the point or region on electric conductor trace is understood to contact point.
Suitably, the motion of the projection being implemented on the area pressed of center and the direction of the plane strutted by conductive traces
Vertically carry out.
According to the present invention, key switch is characterised by, there are the sealing area being connected with base profile portion, and which is accurate
Matchingly it is embedded in and is implemented in the groove on substrate, and the air capacity surrounded by key switch cap and substrate is in the position that do not work
It is big as in on-position being.
In on-position, pressure is produced in the space surrounded by key switch cap and substrate.The pressure is by as follows
Mode is produced, i.e. air capacity is big as in on-position being in the position that do not work, but by key switch cap and substrate bag
The space enclosed is less in the position that do not work.In the case where cancelling by the F that exerts oneself, the pressure support ventilation key switch cap is from connection
Motion of the position to the position that do not work.
Additionally, deformed region is described as the deformed region of annular, base profile portion is described as basic ring, sealing area quilt
The sealing area for being described as annular is described as cannelure groove.Here is noted that annular is also understood to that each closes
The curve of conjunction, that is to say, that deformed region, base profile portion, sealing area and groove be for example so structured that circle, ellipse,
Tetragon or polygon.
Cause by button during the sealing area accurately mate of key switch cap to be introduced into enforcement cannelure in a substrate
The space that deflating cap and substrate are surrounded is airtight.In other words, there is no air exchange between inner region and mistress.Thus,
Dampness is prevented to penetrate in inner region, penetrating into by this dampness to make contact site damage due to corrosion.Additionally, sealing
The matched shape in region is also used for making the position of key switch cap by mistake will not change in switching process.Basic ring is mainly used as
Backstop, such that it is able to key switch cap is introduced in predetermined position.Therefore, especially can guarantee in batch production continuous
Key switch of the production with identical characteristics.
Because key switch cap is made up of the material of rubber-like, and has simple profile portion, so cap can be cheap
Ground and it is applied to batch production ground with injection mold manufacturing.
In a special embodiment, deformed region is configured in the presence of the power for pressing center area pressed real
Apply the deformed region of fastening process.Thus, it is ensured that connecing in contact point present on substrate and the projection of center area pressed
The reliable contacts of contacting surface.
Another advantage of key switch of the invention is need not be to the additional embedding of key switch cap.Thus, may be used
With the obvious manufacture process for accelerating switch.
Description of the drawings
Other expedients schemes of the present invention and the present invention are then act through accompanying drawing and are illustrated.Wherein：
Fig. 1 illustrates the key switch in the position that do not work of the invention with cross-sectional view；
Fig. 2 illustrates the key switch in on-position of the invention with cross-sectional view；
Fig. 3 illustrates the key switch with operating element of the invention.
Specific embodiment
Fig. 1 illustrates the key switch for being in the belt substrate not worked in position of type described by here with cross-sectional view
Exemplary embodiments, by made by the material of integral type rubber-like, key switch cap is installed on the substrate.Button shown in Fig. 1
Switch and be made up of the key switch cap 1a above the substrate 4 of at least two contact point 5 of band and the contact point 5 being arranged on substrate.
Substrate 4 can be the circuit board of the conductive traces with printing and contact point, or electronic component carrier, its feature
Essentially consist in：One or more lead frame trace plastic encapsulations.This encapsulating is not carried out in the region of key switch,
So as to lead frame trace exposes together with superincumbent contact point is installed, button can be passed through between these contact points
Switch sets up electrical connection.
Key switch Mao1aYou centers area presseds 2, encirclement center pressing 2 and the deformed region 3 of the annular being attached thereto,
The basic ring 6 being connected with the deformed region 3 of annular and the sealing area 8 of the annular being connected with basic ring 6 are constituted, and the sealing area has
The shape of cylinder shape.The shape here of cylinder shape is interpreted as the cylinder with circular, oval, tetragon or polygon bottom surface.
3 here of deformed region of annular is configured to substantially be in crown or domeshape.In other words, annular deformed region 3
With the diameter in the region for coupling position of center area pressed 2 less than its with the region for coupling position of basic ring 6
Diameter.
Cannelure 7 is configured with substrate 4,8 accurately mate of sealing area of key switch cap 1a the cannelure is embedded in
In.Groove depth here is designed as follows, i.e. in the case where key switch cap 1a is installed into by regulation on substrate 4,
There is spacing d between the bottom surface 7a of the downside 8a and groove 7 of sealing area 8.Therefore ensure that, by 8 lead-ingroove of sealing area
When middle, in inner region I, the unnecessary air of (i.e. in the space surrounded from key switch cap 1a and substrate 4) can be to
Outer effusion, during so as in by sealing area 8 by regulation lead-ingroove 7, will not form overvoltage in inner region I.
The effect is supported in the following way, i.e. sealing area 8 is less than and range selector along its height sections formula
Width of the ground more than or equal to groove 7.Additionally, on the one hand here guarantees matched shape of the sealing area 8 in groove 7, on the other hand
Ensure that when by 8 lead-ingroove 7 of sealing area, air more easily can be escaped from inner region I.
Basic ring 6 has flat shape, and essentially forms the abutment face with the upside 7b of groove 7.For this purpose, basic ring 6
Extend size as follows to determine, i.e. when key switch cap 1a is guided to by regulation on substrate 6, make basic ring 6 cover completely
Cover slot 7.Therefore basic ring 6 forms a kind of backstop, until can be by 8 lead-ingroove of sealing area.In order to improve this backstop, pressing
, on the connecting portion between basic ring 6 and sealing area 8, there is end difference T in the inner side of key switch cap 1a.Basic ring 6 is by the rank
Terraced portion T is supported on the upside 7b of groove 7.
Thickness of the thickness of basic ring 6 more than deformed region 3.The thickness here of basic ring 6 is as follows determining, i.e.
During operation center area pressed 1a, or when by 8 lead-ingroove 7 of sealing area so as to will not deform.
Fig. 2 illustrates the key switch for illustrating in FIG in on-position with cross-sectional view.By power F is applied
To on the area pressed of center, i.e., operate during the key switch shown in Fig. 1 by pushing button deflating cap 1a, the deformed area of annular
Domain 3 deforms.In the first stage pressed, the zone line 3b of deformed region 3 becomes recessed, that is, be bent outwardly, it means that
Diameter increase of the deformed region 3 of annular in the section.As the volume of air in inner region I will not increase or reduce, institute
To cause zone line 3b with the first convex variant part 3a in deformed region 3 and first bonding pad of center area pressed 2 of annular
Lowland in lowland bending in domain, and the second join domain with the second convex variant part 3c in annular deformed region 3 with basic ring 6
Bending.Further press center area pressed 2 and ultimately result in fastening process, the fastening process by center area pressed 2 guide to
On contact site 5, so that the contact surface 1c being placed on the downside 5a of area pressed sets up the contact point being arranged on substrate 4
Electrical connection between 5.
Volume of air in inner region I of the key switch in on-position (Fig. 2) does not work equivalent to being in
Volume of air in inner region I of the key switch in position (Fig. 1).Air is drawn onto the neutralization of inner region I makes air from inner region
Domain I effusions be in order to by by 8 accurately mate of sealing area ground lead-ingroove 7 airtightly closing inner region.
Fig. 3 illustrates the example of the key switch of the additional operating element of the band in the position that do not work of the invention
Property diagram.Operating element 9 is fastened on substrate 4 on an end 9a, and is substantially designed as follows, i.e. make behaviour
At least one zone line 9c for making element 9 is arranged on center area pressed 2.The other end 9b of operating element 9 is configured to
The area pressed 9d of operating element 9.By power F, in area pressed 9d, push element causes operating element 9 around run-on point D
Rotate.This causes zone line 9c to be vertically pressed on the center area pressed 2 of key switch cap 1a.
In the embodiment shown in Fig. 1 or Fig. 2, power F being applied to out of plumb on area pressed 2 causes area pressed 2
Press towards the insufficient of direction of contact point 5.The deflection of force direction can be realized by operating element 9.Fig. 3 illustrates power
F2, which is applied on the area pressed 9d of operating element under angle [alpha].By around run-on point D rotating operation element 9, operation unit
The zone line 9c of part 9 is vertically pressed on the area pressed 2 of key switch cap 1a.Thus, it is ensured that to key switch 1
Reliable operation.
Reference numerals list
1 key switch
1a key switch caps
1b is raised
1c contact surfaces
2 area presseds
The deformed region of 3 annulars
The first area of the convex deformations of 3a
The recessed deformed regions of 3b
The second area of the convex deformations of 3c
4 substrates
On the upside of 4a substrates
5 contacts
6 base profile portions
6a abutment faces
7 grooves
The bottom surface of 7a grooves
The upside of 7b grooves
8 sealing areas
The bottom of the sealing area of 8a annulars
9 additional operating elements
One end of 9a operating elements
The other end of 9b operating elements
The zone line of 9c operating elements
The area pressed of 9d operating elements
D spacing
Power on F area presseds 2
Power on the area pressed of F2 operating elements 9
D run-on points
R does not work position
S on-positions
End difference in T basic rings
I inner regions
A exterior domains
The angle of Α power F2
Claims (7)
1. a kind of key switch, the key switch is with made by the material flexible by integral type being installed on substrate (4)
Key switch cap (1a), wherein, the key switch cap (1a) includes：
- center area pressed (2), the center area pressed have raised (1b) on the direction towards the substrate (4), its
In, it is disposed with the region of the projection (1b) and the formation of the contact point (5) on the substrate (4) can be arranged in at least two
The contact surface (1c) of electrical contact,
- the center area pressed (2) the deformed region (3) being attached thereto are surrounded,
- base profile the portion (6) that is connected with the deformed region (3), the key switch cap (1a) is using the base profile
Portion is connected with the substrate (4),
And wherein, by will by exert oneself (F) be applied on the center area pressed (2), the key switch (1) can be not
Work, it is characterised in that there are what is be connected with the base profile portion (6)
Sealing area (8), is embedded in the sealing area accurately mate in the groove (7) being implemented in the substrate (4), and described
The air capacity that key switch cap (1a) and the substrate (4) are surrounded is in the position that do not work (R) and the on-position (S)
In be it is equally big,
And wherein, the sealing area (8) is with being connected and with the other end with the base profile portion (6) with an end
Stretch into the cylinder body shape in the groove (7) in portion.
2. key switch according to claim 1, it is characterised in that the deformed region (3) be configured to press it is described
Implement the deformed region of fastening process in the presence of the power (F) of center area pressed (2).
3. key switch according to claim 1 and 2, it is characterised in that the thickness of the sealing area (8) is along its height
Range selector ground be less than and range selector ground more than or equal to the groove (7) width.
4. key switch according to claim 1 and 2, it is characterised in that the base profile portion (6) is with relative to institute
The abutment face (6a) that the upside (4a) of substrate (4) is flatly extended is stated, the groove (7) is completely covered.
5. key switch according to claim 1 and 2, it is characterised in that the bottom (8a) of the sealing area (8) with
One determining deviation (d) is arranged in above the bottom surface (7a) of the groove (7).
6. key switch according to claim 1 and 2, it is characterised in that the contact point (5) is connecing on lead frame
Contact.
7. key switch according to claim 1 and 2, it is characterised in that be fastened with for button on the substrate (4)
The operating element (9) of switch (1), the operating element are converted to the power for acting on onto itself perpendicular to the substrate (4)
The power of upside (4a).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013203467.9 | 2013-03-01 | ||
| DE201310203467 DE102013203467A1 (en) | 2013-03-01 | 2013-03-01 | Pushbutton Switches |
| PCT/EP2014/052006 WO2014131575A1 (en) | 2013-03-01 | 2014-02-03 | Pushbutton switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105009243A CN105009243A (en) | 2015-10-28 |
| CN105009243B true CN105009243B (en) | 2017-04-12 |
Family
ID=50033550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480011476.3A Expired - Fee Related CN105009243B (en) | 2013-03-01 | 2014-02-03 | Pushbutton switch |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105009243B (en) |
| DE (1) | DE102013203467A1 (en) |
| WO (1) | WO2014131575A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE545805C2 (en) * | 2022-06-17 | 2024-02-06 | Assa Abloy Ab | Switch and lock device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932722A (en) * | 1974-04-16 | 1976-01-13 | Nippo Communication Industrial Co., Ltd. | Push button body for a push-button switch providing snap-action of the switch |
| GB2112577B (en) * | 1981-12-29 | 1985-08-29 | Shinetsu Polymer Co | An electrical push-button switch covering member of rubber material |
| DE3122456C2 (en) * | 1980-06-09 | 1986-10-30 | Shin-Etsu Polymer Co., Ltd., Tokio/Tokyo | Elastic push button switch cap |
| DE3809770C2 (en) * | 1988-03-23 | 1991-01-10 | Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De | |
| CN201196921Y (en) * | 2008-04-25 | 2009-02-18 | 禾霖股份有限公司 | Press key group |
| CN201622947U (en) * | 2010-01-21 | 2010-11-03 | 珠海格力电器股份有限公司 | Sealing structure of key |
| CN101882521A (en) * | 2010-06-24 | 2010-11-10 | 海洋王照明科技股份有限公司 | Button cap and push-type switch |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT389398B (en) * | 1984-06-20 | 1989-11-27 | Sterner Franz | CONTACT MAT |
| DE3638667A1 (en) * | 1986-11-12 | 1988-05-19 | Motsch Alfons | Flat switch |
| DE10255338B3 (en) * | 2002-11-27 | 2004-05-19 | Siemens Ag | Switch button integral with resilient skirt, has holder interlocked and firmly connected to it |
| WO2008025342A1 (en) * | 2006-08-31 | 2008-03-06 | Marquardt Gmbh | Electrical switch |
| US8766124B2 (en) * | 2010-09-30 | 2014-07-01 | Apple Inc. | Contaminent resistant membrane in a dome switch and methods for making the same |
| TWM408114U (en) * | 2011-01-12 | 2011-07-21 | Biwin Technologies Co Ltd | Improved structure having a keyswitch |
-
2013
- 2013-03-01 DE DE201310203467 patent/DE102013203467A1/en not_active Withdrawn
-
2014
- 2014-02-03 WO PCT/EP2014/052006 patent/WO2014131575A1/en active Application Filing
- 2014-02-03 CN CN201480011476.3A patent/CN105009243B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932722A (en) * | 1974-04-16 | 1976-01-13 | Nippo Communication Industrial Co., Ltd. | Push button body for a push-button switch providing snap-action of the switch |
| DE3122456C2 (en) * | 1980-06-09 | 1986-10-30 | Shin-Etsu Polymer Co., Ltd., Tokio/Tokyo | Elastic push button switch cap |
| GB2112577B (en) * | 1981-12-29 | 1985-08-29 | Shinetsu Polymer Co | An electrical push-button switch covering member of rubber material |
| DE3809770C2 (en) * | 1988-03-23 | 1991-01-10 | Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De | |
| CN201196921Y (en) * | 2008-04-25 | 2009-02-18 | 禾霖股份有限公司 | Press key group |
| CN201622947U (en) * | 2010-01-21 | 2010-11-03 | 珠海格力电器股份有限公司 | Sealing structure of key |
| CN101882521A (en) * | 2010-06-24 | 2010-11-10 | 海洋王照明科技股份有限公司 | Button cap and push-type switch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013203467A1 (en) | 2014-09-04 |
| CN105009243A (en) | 2015-10-28 |
| WO2014131575A1 (en) | 2014-09-04 |
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