CN105225874A - Press switch device and electronic equipment - Google Patents
Press switch device and electronic equipment Download PDFInfo
- Publication number
- CN105225874A CN105225874A CN201510533027.1A CN201510533027A CN105225874A CN 105225874 A CN105225874 A CN 105225874A CN 201510533027 A CN201510533027 A CN 201510533027A CN 105225874 A CN105225874 A CN 105225874A
- Authority
- CN
- China
- Prior art keywords
- switch device
- press switch
- circuit board
- assembly
- cover assembly
- 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.)
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- 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
- H01H13/04—Cases; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/058—Actuators to avoid tilting or skewing of contact area or actuator
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a kind of press switch device, comprise cover assembly, base assembly, elastic component, balanced component and circuit board assemblies, circuit board assemblies is relative with cover assembly fixing, comprise through hole and multiple avoiding area, elastic component is through the first through hole and two ends difference elasticity abuts cover assembly and base assembly, and balanced component passes avoiding area and two ends are rotatably mounted on cover assembly and base assembly respectively.The invention also discloses a kind of electronic equipment.The balanced component simultaneously connecting cover assembly and base assembly is provided with in press switch device of the present invention, no matter in the process being pressed or upspringing at upper cover, upper cover all can not occur crooked, whole smooth operation and can not rocking, structural reliability is high, operational stability good, and switching device of the present invention also has good capability of electromagnetic shielding and multiple expansion interface, different access needs can be met.
Description
Technical field
The present invention relates to a kind of switching device, particularly relate to press switch device and electronic equipment.
Background technology
Push switch mainly utilizes button to promote transmission mechanism, and the switch making moving contact and fixed contact be switched on or switched off also realizing circuit to transfer, in electric automatic control circuit, for manually sending control signal with the break-make of control circuit.Its structure is simple, is widely used in various electronic product.
Existing push switch is provided with spring in the inside of press section usually, can play well and make press section be pressed the rear effect automatically realizing elastic recovery, but, when some occasion press section area is larger, when operator presses press section force, press section easily occur crooked and produce rock, cause loose contact, cannot reset or feel not good enough, impact normally use.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides and a kind ofly press good stability, in pressing process, crooked or stuck press switch device and electronic equipment can not occur.
In order to realize above-mentioned object, present invention employs following technical scheme:
A kind of press switch device, comprise cover assembly, base assembly, elastic component, balanced component and circuit board assemblies, described circuit board assemblies is relative with described cover assembly fixing, comprise through hole and multiple avoiding area, described elastic component through described first through hole and two ends respectively elasticity abut described cover assembly and described base assembly, described balanced component comprises the first swing component arranged in a crossed manner and the second swing component, described first swing component, described second swing component passes described avoiding area and two ends are rotatably mounted on described cover assembly and described base assembly respectively.
Wherein, described circuit board assemblies comprises circuit board and is covered on the radome that described circuit board has components and parts side, described through hole comprises the second through hole offered in the middle part of the first through hole and described radome offered in the middle part of described circuit board, and described avoiding area is the breach that described circuit board periphery is offered.
Wherein, described base assembly comprises lower cover and base plate, and described base plate is fixed on described lower cover bottom surface.
Wherein, the wall outer surface compartment of terrain of described cover assembly is provided with the extended leg with curved guiding surface, described lower cover comprises the sidewall of annular and turns down the end face of formation from described top side wall inwardly, the side wall inner surfaces of described lower cover is convexly equipped with the lead coordinated with described curved guiding surface, and described extended leg along described lead slidably and spacing by the end face of described lower cover.
Wherein, described base plate is fixed with briquetting, described balanced component is clamped on described base plate rotationally by described briquetting.
Wherein, described cover assembly and described base assembly are respectively equipped with snap fit and latching device, and described snap fit optionally engages with described latching device or is separated.
Wherein, described circuit board is provided with multiple expansion interface, described cover assembly perisporium offers the jack of corresponding described expansion interface.
Wherein, described first swing component and described second swing component include connecting rod, are located at described connecting rod two ends and the first extension rod bent towards the same side and the second extension rod being parallel to the bending of described connecting rod direction from described first extension rod, and described connecting rod, described second extension rod are rotatably mounted on described base assembly and described cover assembly respectively.
Wherein, the described connecting rod of described first swing component comprises the portion that arches upward of arc, described in the portion of arching upward be located at the described connecting rod of described first swing component and the infall of described second swing component.
Another object of the present invention is to provide a kind of electronic equipment, comprise above-mentioned press switch device, described press switch device is fixing on an electronic device.
Be provided with the balanced component simultaneously connecting cover assembly and base assembly in press switch device of the present invention, in the process that upper cover is pressed, balanced component height decreases, and can ensure that upper cover does not occur crooked, whole smooth operation and can not rocking; In the process that upper cover is upspring, balanced component height extends thereupon, and still can ensure that upper cover does not occur crooked, structural reliability is high, operational stability good; While guarantee pressing function, press switch device of the present invention also has good capability of electromagnetic shielding and multiple expansion interface, can meet different access needs.
Accompanying drawing explanation
Fig. 1 is the press switch device structural representation of the preferred embodiment of the present invention.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of the press switch device of the preferred embodiment of the present invention.
Fig. 3 is the base arrangement schematic diagram of the press switch device of the preferred embodiment of the present invention.
Fig. 4 is the internal structure schematic diagram of the press switch device of the preferred embodiment of the present invention.
Fig. 5 is the STRUCTURE DECOMPOSITION figure of the latching device of the preferred embodiment of the present invention.
The cutaway view of the latching device of Fig. 6 preferred embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Consult Fig. 1 and Fig. 2, press switch device of the present invention can be widely used in various electronic equipment, comprise cover assembly 10, base assembly 20, elastic component 30, balanced component 40 and circuit board assemblies 50, circuit board assemblies 50 is relative with cover assembly 10 fixing, comprise through hole 500 and multiple avoiding area 51a, elastic component 30 is through the first through hole 500 and two ends difference elasticity abuts cover assembly 10 and base assembly 20, balanced component 40 comprises the first swing component 41 and the second swing component 42 arranged in a crossed manner, first swing component 41, second swing component 42 passes avoiding area 51a and two ends are rotatably mounted on cover assembly 10 and base assembly 20 respectively.
Particularly, cover assembly 10 comprises upper cover 11 and is close to the decoration 12 of upper cover 11 end face outer surface; Circuit board assemblies 50 comprises circuit board 51 and is covered on the radome 52 that circuit board 51 has the bottom surface of components and parts, and the two is fixed on upper cover 11 by threaded fastener; Through hole 500 comprises the second through hole 520 offered in the middle part of the first through hole 510 and radome 52 offered in the middle part of circuit board 51, and avoiding area 51a is the long and narrow breach of two couple that circuit board 51 periphery is offered.
Base assembly 20 comprises lower cover 21 and base plate 22, and base plate 22 is fixed on lower cover 21 bottom surface.Composition graphs 3, base plate 22 is fixed with briquetting 22a, and balanced component 40 is clamped on base plate 22 rotationally by briquetting 22a.The holder 23 being also provided with pivot joint on base plate 22, one end of elastic component 30 is fixed on base plate 22 by holder 23.
In order to realize coordinating of upper cover 11 and lower cover 21, the extended leg 111 with curved guiding surface 111S is provided with in the wall outer surface compartment of terrain of upper cover 11, lower cover 21 comprises the sidewall of annular and turns down the end face of formation from top side wall inwardly, the side wall inner surfaces of lower cover 21 is convexly equipped with the lead 211 coordinated with curved guiding surface 111S, extended leg 111 along lead 211 slidably and by extended leg 111 to coordinate with the end face of lower cover 21 carry out spacing, like this, upper cover 11 can not be deviate from from lower tops after installing bottom lower cover 21, can realize reciprocating motion under the effect of elastic component 30.Here, elastic component 30 preferably adopts spring.Be understandable that, other elastic components also just can be used as silica gel, rubber etc.
The present embodiment is provided with multiple expansion interface (figure do not mark) on circuit board 51, as the power plug interface of circle hole shape, USB port, microUSB mouth and MiniUSB mouth etc., cover assembly 10 perisporium offers the jack 110 of corresponding expansion interface.
In balanced component 40, first swing component 41 and the second swing component 42 include connecting rod 401, are located at connecting rod 401 two ends and the first extension rod 402 bent towards the same side and the second extension rod 403 being parallel to the bending of connecting rod 401 direction from the first extension rod 402, and connecting rod 401, second extension rod 403 is rotatably mounted on base assembly 20 and cover assembly 10 respectively.The orthogonal setting of connecting rod 401 of the present embodiment preferably the first swing component 41 and the second swing component 42.
Further, the connecting rod 401 of the first swing component 41 and the coplanar setting of connecting rod 401 of the second swing component 42, the connecting rod 401 of the first swing component 41 comprises the portion that the arches upward 401a of arc, the portion 401a of arching upward is located at the connecting rod 401 of the first swing component 41 and the infall of the second swing component 42, in the process of pressing upper cover 11, upper cover 11 overcomes reciprocating motion under the elastic force of elastic component 30, first swing component 41 and the second swing component 42 are along orthogonal two plane rockings simultaneously, ensure that the pressing process of upper cover 11 is steadily reliable, can not shake or stuck phenomenon.
Cover assembly 10 and base assembly 20 are also fixed with respectively the snap fit 11a for cooperatively interacting and latching device 24, snap fit 11a and latching device 24 optionally engage or are separated.
Fig. 4 is the internal structure schematic diagram of the press switch device of the preferred embodiment of the present invention.When press switch device is assembled, first snap fit 11a is fixed on upper cover 11, the bottom of upper cover 11 from lower cover 21 is loaded, the curved guiding surface 111S of extended leg 111 is loaded along lead 211, elastic component 30 one end is fixed on upper cover 11 back side, then circuit board 51, radome 52 is loaded successively and be fixed on upper cover 11 back side; Meanwhile, latching device 24 is fixed on base plate 22, the connecting rod 401 of the first swing component 41 and the second swing component 42 is fastened on base plate 22 actively; Finally, first extension rod 402 of the first swing component 41 and the second swing component 42 is passed the corresponding avoiding area 51a in circuit board 51 edge, and the second extension rod 403 of the first swing component 41 and the second swing component 42 is rotatably mounted to upper cover 11 inner surface, base plate 22 is fixed to the bottom of lower cover 21.
Composition graphs 5 and Fig. 6, the latching device 24 of the present embodiment comprises lock tube 241, snap close 242, bracing frame 243, stage clip 244 and control lever 245, lock tube 241 is the shell structure of hollow, stage clip 244 is contained in the side in lock tube 241 after being fixed on the bottom of bracing frame 243, the top of snap close 242 has the bayonet socket coordinated with snap fit 11a, the sidewall of snap close 242 is provided with main guide vane end stop 242a and auxiliary stopper block 242b, main guide vane end stop 242a comprises two spaced two " V " shape guide surfaces and the sides being connected these two " V " shape guide surfaces on the length direction of snap close 242, two auxiliary stopper block 242b are that diagonal angle arranges and is located at respectively above and below main guide vane end stop 242a, and the auxiliary stopper block 242b face relative with main guide vane end stop 242a is parallel to each other, formed around the main guide vane end stop 242a outer wall guide rail of a week between main guide vane end stop 242a and auxiliary stopper block 242b, control lever 245 is formed as open-topped loop configuration, be fixed in lock tube 241 bottom it, after snap close 242 is inserted into the opposite side in lock tube 241, bracing frame 243 is abutted bottom the bayonet socket of snap close 242, the free end of control lever 245 is limited in the guide rail of snap close 242 simultaneously, and in guide rail, in the process that can move up and down at snap close 242, do the reciprocating motion of closed trajectory.
Holder 23 top offers opening (figure does not mark), lock tube 241 to be inserted in holder 23 by this opening and to abut base plate 22 bottom it, the hang plate 241b of lock tube 241 both sides through during opening by towards middle spring compression, deviating from of lock tube 241 can be limited through after opening.
Particularly, bracing frame 243 top has gap slot 243a, and the bayonet socket bottom surface of snap close 242 is protruding with the projection 242c for being inserted in gap slot 243a.Two auxiliary stopper blocks A, B lay respectively at the oblique upper of first side of main guide vane end stop 242a and the oblique below of the second side, and control lever 245 has certain amount of elastic deformation.In its natural state, stage clip 244 is ejection snap close 242 indirectly by ejection bracing frame 243 upward, make snap close 242 be in ejection state, now, the free end of control lever 245 is in the bottom lower left of main guide vane end stop 242a (in the Fig. 6) of the first side of main guide vane end stop 242a bottom surface, in the process that upper cover 11 is pressed, snap fit 11a is pressed the interior also continuation of the bayonet socket snapping in snap close 242 towards pressing, the free end of control lever 245 is mobile clockwise until " V " shape guide surface above entering in guide rail along the outer surface of main guide vane end stop 242a, remove pressing force, stage clip 244 recovers deformation jack-up snap close 242, the free end of control lever 245 is finally fastened on the minimum point of " V " shape guide surface of top, snap close 242 and snap fit 11a are fastened togather, now, stage clip 244 is still in compressive state, the cover assembly 10 of press switch device is positioned at base assembly 20, namely the locking operation of snap fit 11a is completed, again press upper cover 11, snap close 242 moves down, be positioned at the auxiliary stopper block A of the oblique upper of first side of main guide vane end stop 242a towards the second side extruding control lever 245, control lever 245 is moved along the second side of " V " shape guide surface of top, after being pressed into minimum point, the peak of " V " shape guide surface of top crossed by bar 245 processed, remove external force, control lever 245 moves to " V " shape guide surface of below along the sidewall of main guide vane end stop 242a, namely main guide vane end stop 242a no longer carries out spacing to control lever 245, control lever 245 homing, now, the cover assembly 10 of press switch device is upspring in base assembly 20, namely snap fit 11a is released, thus complete releasing process.And so forth, and the loop control of press switch device can be realized.
When the upper cover 11 of switching device is pressed into after in base assembly 20, the jack 110 upper cover 11 connecting expansion interface is hidden in base assembly 20, can prevent dust from entering, when needs use expansion interface, again press, achieve the functional diversities of switching device.
Several through holes worn for threaded fastener (figure does not mark) are provided with at the edge of lower cover 21, utilize threaded fastener this press switch device can be fixed in the corresponding structure of various electronic equipment (as intelligent terminal etc.), and protrude the shell of electronic equipment, make circuit board 51 be connected with governor circuit, dismounting is very convenient simultaneously.Because this switching device is provided with expansion interface, when being installed to after on electronic equipment, this press switch device can also provide extra expansion interface for electronic equipment.Be understandable that, the fixed form of press switch device and electronic equipment is not limited in aforesaid way, also can for buckle, the fixed form such as be threaded.
Be provided with the balanced component simultaneously connecting cover assembly and base assembly in press switch device of the present invention, in the process that upper cover is pressed, balanced component height decreases, and can ensure that upper cover does not occur crooked, whole smooth operation and can not rocking; In the process that upper cover is upspring, balanced component height extends thereupon, and still can ensure that upper cover does not occur crooked, structural reliability is high, operational stability good.Meanwhile, the installation method of switching device provided by the invention is arranged in switching device and does not deviate from can ensureing the sound construction such as cover assembly and balanced component, meanwhile, can also ensure that press switch device possesses expanded interface function.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the application.
Claims (10)
1. a press switch device, it is characterized in that, comprise cover assembly (10), base assembly (20), elastic component (30), balanced component (40) and circuit board assemblies (50), described circuit board assemblies (50) is relative fixing with described cover assembly (10), comprise through hole (500) and multiple avoiding area (51a), described elastic component (30) through described first through hole (500) and two ends respectively elasticity abut described cover assembly (10) and described base assembly (20), described balanced component (40) comprises the first swing component (41) arranged in a crossed manner and the second swing component (42), described first swing component (41), described second swing component (42) through described avoiding area (51a) and two ends be rotatably mounted to respectively on described cover assembly (10) and described base assembly (20).
2. press switch device according to claim 1, it is characterized in that, described circuit board assemblies (50) comprises circuit board (51) and is covered on the radome (52) that described circuit board (51) has components and parts side, described through hole (500) comprises the second through hole (520) offered in the middle part of described circuit board (51) the first through hole (510) of offering of middle part and described radome (52), the breach that described avoiding area (51a) offers for described circuit board (51) periphery.
3. press switch device according to claim 1, it is characterized in that, described base assembly (20) comprises lower cover (21) and base plate (22), and described base plate (22) is fixed on described lower cover (21) bottom surface.
4. press switch device according to claim 3, it is characterized in that, the wall outer surface compartment of terrain of described cover assembly (10) is provided with the extended leg (111) with curved guiding surface (111S), described lower cover (21) comprises the sidewall of annular and turns down the end face of formation from described top side wall inwardly, the side wall inner surfaces of described lower cover (21) is convexly equipped with the lead (211) coordinated with described curved guiding surface (111S), described extended leg (111) along described lead (211) slidably and spacing by the end face of described lower cover (21).
5. press switch device according to claim 3, it is characterized in that, described base plate (22) is fixed with briquetting (22a), described balanced component (40) is clamped on described base plate (22) rotationally by described briquetting (22a).
6. press switch device according to claim 1, it is characterized in that, described cover assembly (10) and described base assembly (20) are respectively equipped with snap fit (11a) and latching device (24), and described snap fit (11a) and described latching device (24) optionally engage or be separated.
7. press switch device according to claim 2, it is characterized in that, described circuit board (51) is provided with multiple expansion interface, described cover assembly (10) perisporium offers the jack (110) of corresponding described expansion interface.
8. according to the arbitrary described press switch device of claim 1-7, it is characterized in that, described first swing component (41) and described second swing component (42) include connecting rod (401), be located at described connecting rod (401) two ends and the first extension rod (402) bent towards the same side and the second extension rod (403) being parallel to the bending of described connecting rod (401) direction from described first extension rod (402), described connecting rod (401), described second extension rod (403) is rotatably mounted on described base assembly (20) and described cover assembly (10) respectively.
9. press switch device according to claim 8, it is characterized in that, the described connecting rod (401) of described first swing component (41) comprises the portion that arches upward (401a) of arc, described in the portion (401a) that arches upward be located at the described connecting rod (401) of described first swing component (41) and the infall of described second swing component (42).
10. an electronic equipment, is characterized in that, comprise the arbitrary described press switch device of claim 1-9, described press switch device is fixing on an electronic device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621788.2A CN105161932B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
| CN201510533027.1A CN105225874B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510533027.1A CN105225874B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621788.2A Division CN105161932B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105225874A true CN105225874A (en) | 2016-01-06 |
| CN105225874B CN105225874B (en) | 2017-10-24 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621788.2A Active CN105161932B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
| CN201510533027.1A Active CN105225874B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621788.2A Active CN105161932B (en) | 2015-08-26 | 2015-08-26 | Press switch device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105161932B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579881A (en) * | 2019-01-08 | 2019-04-05 | 东莞市林积为实业投资有限公司 | A kind of encoder convenient for assembling |
| CN114242493B (en) * | 2021-12-20 | 2022-08-16 | 深圳市金龙格王电子有限公司 | High-precision weak current switch control system |
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| CN101295867A (en) * | 2007-04-27 | 2008-10-29 | 晋煜企业股份有限公司 | Overload protecting switch device |
| CN101556872A (en) * | 2008-04-07 | 2009-10-14 | 怡利电子工业股份有限公司 | Keyboard device formed by multi-axis balancing touch keys |
| US20100300857A1 (en) * | 2009-05-27 | 2010-12-02 | Cheng Chia-Fa | Key switch |
| EP2509087A1 (en) * | 2011-04-06 | 2012-10-10 | Abb Ag | Rocker holder with at least one actuation rocker of a door station or residence station of a building communication system |
| CN102779675A (en) * | 2011-05-11 | 2012-11-14 | 纬创资通股份有限公司 | Key device, combination of supporting seat and key cover plate and manufacturing method |
| CN104505292A (en) * | 2014-11-19 | 2015-04-08 | 余正明 | Long stroke keyboard switch |
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|---|---|---|---|---|
| CN200953413Y (en) * | 2006-03-13 | 2007-09-26 | 黄华道 | Electrical leakage protection socket with service life stopping detection and detection result prompting function |
| CN101471191B (en) * | 2007-12-24 | 2011-09-21 | 深圳富泰宏精密工业有限公司 | Key structure and electronic device using the same |
| CN101645566B (en) * | 2008-08-07 | 2013-07-24 | 林雪莲 | Leakage protection socket |
| CN202996650U (en) * | 2012-12-12 | 2013-06-12 | 东莞市群佳实业有限公司 | Television button device |
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- 2015-08-26 CN CN201510621788.2A patent/CN105161932B/en active Active
- 2015-08-26 CN CN201510533027.1A patent/CN105225874B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295867A (en) * | 2007-04-27 | 2008-10-29 | 晋煜企业股份有限公司 | Overload protecting switch device |
| CN101556872A (en) * | 2008-04-07 | 2009-10-14 | 怡利电子工业股份有限公司 | Keyboard device formed by multi-axis balancing touch keys |
| US20100300857A1 (en) * | 2009-05-27 | 2010-12-02 | Cheng Chia-Fa | Key switch |
| EP2509087A1 (en) * | 2011-04-06 | 2012-10-10 | Abb Ag | Rocker holder with at least one actuation rocker of a door station or residence station of a building communication system |
| CN102779675A (en) * | 2011-05-11 | 2012-11-14 | 纬创资通股份有限公司 | Key device, combination of supporting seat and key cover plate and manufacturing method |
| CN104505292A (en) * | 2014-11-19 | 2015-04-08 | 余正明 | Long stroke keyboard switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105161932A (en) | 2015-12-16 |
| CN105225874B (en) | 2017-10-24 |
| CN105161932B (en) | 2017-11-03 |
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