CN101770878B - Pressing switch - Google Patents
Pressing switch Download PDFInfo
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- CN101770878B CN101770878B CN 200910260898 CN200910260898A CN101770878B CN 101770878 B CN101770878 B CN 101770878B CN 200910260898 CN200910260898 CN 200910260898 CN 200910260898 A CN200910260898 A CN 200910260898A CN 101770878 B CN101770878 B CN 101770878B
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- Prior art keywords
- fixed contact
- switch
- switch enclosure
- earth terminal
- push switch
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- Expired - Fee Related
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to a pressing switch used for operation parts of various electronic appliances and being operated by pressing from a direction parallel to the wire laying base plate, and provides a pressing switch taking measures to static electricity flowing from a human body and the like to the operation part. The pressing switch has a switch box having fixed contacts internally, an operation part positioned in a mode of projecting out of the front for switching connection states of a switch, and an earth terminal led out from the switch box and is electrically independent with the fixed contacts and being positioned at the side of the operation part of the switch box.
Description
Technical field
The present invention relates to the push switch for the operating portion of various electronic equipments.
Background technology
In recent years, slimming along with various electronic equipments, the side all electronic equipment of configuration operation button also just increases, in this action button part, available can be from the push switch that is suitable for slimming of the direction pressing operation that is parallel to the circuit board face of installing.On the other hand because when carrying out pressing operation human body with static flow to signal circuit from action button through push switch, sometimes become the misoperation of electronic equipment, the main cause of fault, so seek this static counter-measure.
About so existing push switch, utilize Fig. 8～15 to describe.
Fig. 8 is the outside drawing of existing push switch.Fig. 9 is the profile of existing push switch.Figure 10 is the exploded perspective view of existing push switch.Figure 11 is the vertical view of the switch enclosure of existing push switch.Figure 12 is the profile of the operate condition of existing push switch.Figure 13 is the outside drawing of the installment state of existing push switch.Also have, for the convenience that illustrates, outside drawing, the figure of exploded perspective view for seeing from oblique rear.
In Fig. 8～Figure 13, switch enclosure 1 is consisted of with the insulating resin of basic rectangle, possesses in 4 bights of upper surface and overlooks the 1B of cornicult section that is the L font.And then switch enclosure 1 possesses recess 1A in upper face center section.In the central authorities of recess 1A inner bottom surface, expose and present central fixed contact (contact) 2 and in the outside fixed contact 3 at 2 places of the left and right directions of the some object's position centered by this central authorities' fixed contact 2.And, as being shown in Figure 11 ground, the rear portion side (below among Figure 11) of the sidewall of center contact terminal 4 from about switch enclosure 1 is respectively drawn 1 to the outside.Center contact terminal 4 is connected with central fixed contact 2.And the toe lateral (above among Figure 11) of the sidewall of outer contacts terminal 5 from about switch enclosure 1 is respectively drawn 1 to the outside.That is to say, center contact terminal 4 and outer contacts terminal 5 each 1 become one group, the sidewall from about the switch enclosure 1 is respectively drawn 1 group respectively.And, center contact terminal 4 and outer contacts terminal 5 on perpendicular to the direction of the sidewall of switch enclosure 1 to extend setting with the basic same plane of the lower surface of switch enclosure 1 planely.
Moving contact 6 is consisted of with the elastic metallic thin plate of the circular dome shape of convex above being, and the periphery lower end loads on the outside at above-mentioned 2 places fixed contact 3, is contained in the recess 1A of switch enclosure 1.
The upper and lower surface of operating body 8, can move forward and backward in the scope that the 1B of cornicult section by switch enclosure 1 surrounds in the screening glass 7 of the upper surface that is adhered to switch enclosure and the flat part 9A of lid 9 at the two side position wipings of the 8D of its frame section.
Existing push switch such as above ground formation, next describe about its action.
At first, if in the past the direction rear presses in the operating portion 8A of operating body 8, then operating body 8 moves to the rear, and the press section 8C of drive division 8B front end follows to move along the rake 9B of lid 9 in this and moves to oblique below.Then; this press section 8C presses the apex of the dome shape of moving contact 6 by screening glass 7; if surpass predetermined pressing force; then moving contact 6 elasticity counter-rotating; as be shown in Figure 12 ground; dome shape apex lower surface is contacted with central fixed contact 2, conducting between outside fixed contact 3 and the central fixed contact 2.
And if stop to put on the pressing operation of operating portion 8A, then the dome shape part self-healing of moving contact 6 leaves central fixed contact 2 for original top convex, becomes state of insulation between outside fixed contact 3 and the central fixed contact 2.Because the recuperability of this moving contact 6 and upward the power that saves up strength reacts on the press section 8C of operating body 8 by screening glass 7, press section 8C moves to oblique upper along the rake 9B of lid 9.Follow in the movement of this press section 8C, operating body 8 turns back to the original anterior position that is shown in Fig. 9.
Next, about the installment state of this push switch, utilize Figure 13 to describe.
Weld respectively corresponding outer contacts terminal 5, center contact terminal 4, the 9C of ground connection foot in each weld zone 11 of circuit board 10 (11A, 11B, 11C) and push switch is installed.
Under this installment state, if human body with static flow to the operating portion 8A of push switch by finger tip etc., then this static is transmitted in the lid 9 of the metallic plate system of the top that is positioned at operating portion 8A, flows to the not shown earthy circuit that is connected with weld zone 11C with ground connection foot from the 9C of ground connection foot.Thus, can not produce the misoperation etc. of the electronic equipment of lift-launch.
Also have, as the relevant formerly technical literature information of the invention of this application, for example, known patent document 1, patent documentation 2.
; in existing push switch; although as above-mentioned ground; static from the human body that operates passes to lid 9 from operating portion 8A; flow to the earthy circuit of circuit board 10 from the 9C of ground connection foot of lid 9, but sometimes flow to the outer contacts terminal 5 of the front side that is drawn out to switch enclosure 1 from operating portion 8A.And static flows to the signal circuit that is connected with outer contacts terminal 5, might produce misoperation, the fault of the electronic equipment of lift-launch.
[patent documentation 1] TOHKEMY 2002-343178 communique;
[patent documentation 2] Japanese kokai publication hei 11-39987 communique.
Summary of the invention
Even the invention provides the push switch that is positioned at the formation that also can protect near the static of the terminal of the front side of the switch enclosure of operating portion for flowing to.
The present invention possesses: possess the switch enclosure of fixed contact in inside, with the mode that protrudes from the place ahead from switch enclosure arrange, the operating portion of the connection status of change over switch, and from switch enclosure draw, with fixed contact electricity earth terminal independently.Earth terminal has the formation of the front side that is arranged at switch enclosure.By so consisting of, provide following push switch: become independently earth terminal of the fixed contact electricity used from switch by making the front side that is positioned at switch enclosure near the terminal of operating portion, even static flows to the problem of misoperation that the terminal (earth terminal) that is positioned at front side also can not produce electronic equipment, fault etc. via operating portion.
Description of drawings
Fig. 1 is the profile of the push switch in the embodiments of the present invention 1.
Fig. 2 is the exploded perspective view of the push switch in the embodiments of the present invention 1.
Fig. 3 is the vertical view of the switch enclosure of the push switch in the embodiments of the present invention 1.
Fig. 4 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 1.
Fig. 5 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 2.
Fig. 6 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 3.
Fig. 7 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 4.
Fig. 8 is the outside drawing of existing push switch.
Fig. 9 is the profile of existing push switch.
Figure 10 is the exploded perspective view of existing push switch.
Figure 11 is the vertical view of the switch enclosure of existing push switch.
Figure 12 is the profile of the operate condition of existing push switch.
Figure 13 is the outside drawing of the installment state of existing push switch.
The explanation of symbol
6 moving contacts
7 screening glass
8 operating bodies
The 8A operating portion
The 8B drive division
The 8C press section
8D frame section
9,49,59 lids
9A, 49A flat part
The 9B rake
9C, 49C, 59C ground connection foot
9D engages retainer
1,21,41,51 switch enclosures
1A, 21A recess
1B, 21B cornicult section
The 21C receiving portion
2,22 central fixed contacts
3,23 outside fixed contacts
4,24 center contact terminals
5,25 outer contacts terminals
26,46,56 earth terminals
30,32,33,34 circuit boards
31 weld zones
31A outer contacts terminal weld zone
31B center contact terminal weld zone
31C, 32C, 33C, 34C earth terminal weld zone
31D ground connection foot weld zone
33D, 34D through hole
Embodiment
Below, about embodiments of the present invention, utilize Fig. 1～Fig. 7 to describe.Also have, adding prosign with the part of the identical formation of formation that is illustrated with existing technology, simplify detailed explanation.
(execution mode 1)
Fig. 1 is the profile of the push switch in the embodiments of the present invention.Fig. 2 is the exploded perspective view of the push switch in the embodiments of the present invention.Fig. 3 is the vertical view of the switch enclosure of the push switch in the embodiments of the present invention.Fig. 4 is the outside drawing of the installment state of the push switch in the embodiments of the present invention.Also have, for the convenience that illustrates, outside drawing, the figure of exploded perspective view for seeing from oblique rear.
In Fig. 2, switch enclosure 21 is consisted of with the insulating resin of overlooking rectangular shape, possesses circular recess 21A at upper surface.Switch enclosure 21 4 bights of upper surface possess respectively towards above outstanding be the 21B of cornicult section of L font.At the inner bottom surface of recess 21A, expose the outside fixed contact 23 of the central fixed contact 22 that presents cylindrical shape and prism shape as fixed contact.
In Fig. 3, central fixed contact 22 is positioned at the central authorities of circular recess 21A inner bottom surface.Outside fixed contact 23 is left central fixed contact 22 and is equipped on the left side circumference of recess 21A.And, with respect to the right side circumference of central fixed contact 22 with the recess 21A of the position of outside fixed contact 23 symmetries, arrange with the receiving portion 21C of the prism shape that insulating resin was consisted of of outside fixed contact 23 formed objects.And, draw from the rear side of the right side wall of switch enclosure 21 with the center contact terminal 24 that central fixed contact 22 is connected.The outer contacts terminal 25 that is connected with outside fixed contact 23 is drawn from the rear side of the left side wall of switch enclosure 21.And, from central fixed contact 22 and outside fixed contact 23 electricity independently flat earth terminal 26 be fixed in switch enclosure 21 with the grafting moulding, each 1 draws the front side of the sidewall from about the switch enclosure 21.That is to say, side is drawn earth terminal 26 forwardly, side is drawn center contact terminal 24 in the wings at the right side wall of switch enclosure 21.And side is drawn earth terminal 26 forwardly, side is drawn outer contacts terminal 25 in the wings at the left side wall of switch enclosure 21.Center contact terminal 24, outer contacts terminal 25 and earth terminal 26 become conplane mode substantially with their lower surface and the lower surface of switch enclosure 1, lead to tabular.
In Fig. 1 and Fig. 2, moving contact 6 is consisted of with the elastic metallic thin plate of corrosion resistant plate etc., the circular dome shape that bloats with being the top convex.The periphery lower end of moving contact 6 loads on outside fixed contact 23 and receiving portion 21C, and outside fixed contact 23 becomes conducting state with moving contact 6.Moving contact 6 reserves the state of facing in gap with its dome shape apex lower surface and central fixed contact 22, be contained in the recess 21A of switch enclosure 21.
Operating body 8 is consisted of with insulating resin, has the operating portion 8A in the outer the place ahead (left in Fig. 1) that protrudes from switch enclosure 21 and has a flexible bar-shaped drive division 8B from what the back central authorities of operating portion 8A formed highlightedly towards the rear.Drive division 8B has spherical press section 8C at its front end.Operating portion 8 has from the both ends of the back of operating portion 8A and drive division 8B and reserves the interval and surround the 8D of frame section that it arranges peripherally.The 8D of frame section loads in screening glass 7 upper surfaces.The 8D of frame section of operating body 8 imbeds in the 21B of cornicult section of switch enclosure 21, limits the to the left and right movement of direction, only can be displaced into fore-and-aft direction in the scope of being surrounded by the 21B of cornicult section.
About as the switch motion of the push switch that consists of of above ground describe.
At first, if in the past the direction rear presses in the operating portion 8A of operating body 8, then operating body 8 moves to the rear, and the press section 8C of drive division 8B front end follows to move along the rake 9B of lid 9 in this and moves to oblique below.Then; this press section 8C presses the apex of the dome shape of moving contact 6 via screening glass 7; if surpass predetermined pressing force; then moving contact 6 elasticity counter-rotating; as be shown in Figure 12 ground; dome shape apex lower surface is contacted with central fixed contact 2, conducting between outside fixed contact 3 and the central fixed contact 2.
And if stop to put on the pressing operation of operating portion 8A, then the dome shape part self-healing of moving contact 6 leaves central fixed contact 2 for original top convex, becomes state of insulation between outside fixed contact 3 and the central fixed contact 2.Because the recuperability of this moving contact 6 and upward the power that saves up strength reacts on the press section 8C of operating body 8 by screening glass 7, press section 8C moves to oblique upper along the rake 9B of lid 9.Follow in the movement of this press section 8C, operating body 8 turns back to the original anterior position that is shown in Fig. 1.
Next, about the installment state of this push switch, utilize the outside drawing of the installment state of Fig. 4 to describe.
In Fig. 4, the push switch welded and installed is in the circuit board 30 of the electronic equipment of the weld zone 31 that is provided with push switch installation usefulness at upper surface.At circuit board 30,5 weld zones 31 are set.5 weld zones 31 correspond respectively to the 9C of ground connection foot of center contact terminal 24, outer contacts terminal 25, earth terminal 26 and the lid 9 of drawing from the switch enclosure 21 of push switch.Details are, are that the earth terminal 26 corresponding positions of front side arrange earth terminal weld zone 31C in the operating portion side with the left and right sides sidewall that is arranged at switch enclosure 21.And then, in the position corresponding with the outer contacts terminal 25 of the rear side that is drawn out to left side wall outer contacts terminal weld zone 31A is set, similarly in the position corresponding with the center contact terminal 24 of the rear side that is drawn out to right side wall center contact terminal weld zone 31B is set.And, in the position corresponding with the 9C of ground connection foot of lid 9 the weld zone 31D of ground connection foot is set.
And, by welding respectively earth terminal 26, outer contacts terminal 25, center contact terminal 24 and the 9C of ground connection foot and push switch be installed on circuit board 30 with weld zone 31D with weld zone 31B and ground connection foot with weld zone 31A, center contact terminal with weld zone 31C, outer contacts terminal at earth terminal.Also have, earth terminal is connected in earthy circuit with weld zone 31C and ground connection foot with weld zone 31D.
In the push switch of present embodiment described above, flow to operating portion 8A and be sent in the situation of lid 9 sides at the static from human body etc., static flows to the 9C of ground connection foot of weld zone 31D and uses circuit with connecting from being connected in ground connection foot.And, even at static just in case flow in the situation of earth terminal 26 of the operating portion 8A side that is arranged at switch enclosure 21, because the central fixed contact 22 of earth terminal 26 and switch enclosure 21 inside and outside fixed contact 23 electricity independently are not connected in the signal circuit, so can make static flow to reliably earthy circuit by earth terminal with weld zone 31C yet.Thereby, can prevent that static from flowing to central fixed contact 22, outside fixed contact 23, the push switch of the problem of the misoperation that do not produce electronic equipment, fault etc. can be provided.
Also have, the earth terminal 26 of drawing respectively from the left and right sides sidewall front side of switch enclosure 21 preferably constitutes as mentioned above: separately the flat member of a slice of 26 of earth terminals is embedded in the switch enclosure 21 about will being connected to.Thus, when switch enclosure 21 forms, during welding etc., can prevent that unwanted warpage generation etc. and intensity from becoming excellent.But, also can to about earth terminal 26 be fixed with each member.
(execution mode 2)
When present embodiment is described, only the part different from execution mode 1 described.Utilize Fig. 5 to describe about the installment state of the push switch in the execution mode 2.Fig. 5 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 2.
In Fig. 5, be to make the 49C of ground connection foot of the flat part 49A that is arranged at lid 49 to arrange with the position consistency of the earth terminal 46 of the front side of the left and right sides sidewall that is drawn out to switch enclosure 41 with execution mode 1 difference.If describe in further detail, then make the 49C of ground connection foot extend setting from the side end in the place ahead of flat part 49A towards the below, and by making its leading section bending arrange, weld planar portions to be parallel to circuit board 32 upper surfaces.That is to say, planar portions is by being bent to arrange with the lower surface of switch enclosure 41 is parallel.Also have, the earth terminal 46 that leaves switch enclosure 41 shortens and is the length of the 49C of ground connection foot that does not hinder above-mentioned formation.
If be the push switch that so consists of, the earth terminal 46 of then drawing from switch enclosure 41 can share same earth terminal with the 49C of ground connection foot of lid 49 and weld with 32C.Therefore, no matter static flows to lid 49, flows to earth terminal 46 by operating portion 8A, can both flow to reliably earthy circuit.Thereby the ground connection foot of circuit board 30 that need not to be shown in Fig. 4 with weld zone 31D the circuitous pattern design easily, design freedom improves.And then, because can be near the position of the operating portion 8A side welding ground connection 49C of foot, so can provide antagonism by the strong push switch of peel strength of pressing the weld part that load causes that puts on operating portion 8A.
(execution mode 3)
When present embodiment is described, only the part different from execution mode 1 and 2 described.Utilize Fig. 6 to describe about the installment state of the push switch in the execution mode 3.Fig. 6 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 3.
In Fig. 6, different from execution mode 1 and 2, the bending of the 59C of the ground connection foot front end of lid 59 disappears, and former state is extended setting to vertical lower.The leading section of the 59C of ground connection foot extends setting downwards than the lower surface of switch enclosure 41, inject be arranged at circuit board 33 earth terminal with the through hole 33D of weld zone 33C welded and installed.And shortening from the earth terminal 46 of switch enclosure 41 is the length of the 59C of ground connection foot that do not hinder above-mentioned formation.
If be the push switch that so consists of, the earth terminal 46 of then drawing from switch enclosure 41 can share same earth terminal with the 59C of ground connection foot of lid 59 and weld with weld zone 33C.Therefore, no matter static flows to lid 59, flows to earth terminal 46 by operating portion 8A, can both flow to reliably earthy circuit.Thereby same with execution mode 2, the ground connection foot of circuit board 30 that need not to be shown in Fig. 4 with weld zone 31D the circuitous pattern design easily, design freedom improves.And then, because can inject through hole 33 near the position of the operating portion 8A side welding ground connection 59C of foot and with the front end of the 59C of ground connection foot, so can provide antagonism by the strong push switch of peel strength of pressing the weld part that load causes that puts on operating portion 8A.
(execution mode 4)
When present embodiment is described, only the part different from execution mode 1～3 described.Utilize Fig. 7 to describe about the installment state of the push switch in the execution mode 4.Fig. 7 is the outside drawing of the installment state of the push switch in the embodiments of the present invention 4.
In Fig. 7, different from execution mode 1～3, will partly be arranged in the shape that the through hole of the ground connection foot 59 shown in Fig. 6 inserts usefulness the front end from the earth terminal 56 of switch enclosure 51.Constitute if at length describe then: at first the 49C of ground connection foot of lid 49 and the shape that is shown in Fig. 5 are similarly, extend setting downwards from the side end of the front side of flat part 49A, and it is crooked and planar portions is set to make its leading section be parallel to circuit board 32 upper surface ground.The earth terminal 56 of drawing from switch enclosure 51 on the other hand, is bent to form and extends setting towards vertical lower on the plane of circuit board 34.The leading section of earth terminal 56 extends the lower surface below that arranges to than switch enclosure 51, inject be arranged at circuit board 34 earth terminal with the through hole 34D of weld zone 34C welded and installed.
If be the push switch that so consists of, the earth terminal 56 of then drawing from switch enclosure 41 can share same earth terminal with the 49C of ground connection foot of lid 49 and weld with 34C.Therefore, no matter static flows to lid 49, flows to earth terminal 56 by operating portion 8A, can both flow to reliably earthy circuit.Thereby same with execution mode 2 and 3, the ground connection foot of circuit board 30 that need not to be shown in Fig. 4 with weld zone 31D the circuitous pattern design easily, design freedom improves.And, the peel strength strong push switch of pressing the load weld part that cause of antagonism by the operating portion 8A that puts on push switch can be provided.
Also have, as each terminal, the ground connection foot at the above-mentioned execution mode that is illustrated 1～4, be not limited to form plane with the basic same plane of the lower surface of corresponding switch enclosure.Also can be other terminal shapes of surface installing type, for example the terminal shape of J crooked (bent).And the detailed formation of the contact part of switch, operating body etc. also not only is defined in above-mentioned formation.
Push switch among the present invention can make and flow to the static that is positioned near the terminal of the front side of operating portion and flow to reliably earthy circuit, and is useful in the operating portion of various electronic equipments etc.
Claims (6)
1. push switch is characterized in that possessing:
The switch enclosure that possesses fixed contact in inside;
The operating portion that arranges in the mode that protrudes from the place ahead from described switch enclosure;
From described switch enclosure draw, with described fixed contact electricity earth terminal independently; With
The fixed contact terminals of drawing to described switch enclosure outside from described fixed contact;
Wherein, described earth terminal be connected fixed contact terminals and constitute with the weld zone of circuit board and be connected;
Described earth terminal is compared the front side that is arranged at described switch enclosure with described fixed contact terminals.
2. according to push switch claimed in claim 1, it is characterized in that:
Described fixed contact comprises central fixed contact and outside fixed contact;
Described fixed contact terminals comprises:
The center contact terminal of drawing to described switch enclosure outside from described central fixed contact; With
The outside fixed contact terminals of drawing to described switch enclosure outside from described outside fixed contact;
Wherein, described center contact terminal is compared the rear side that is arranged at described switch enclosure with described outer contacts terminal with described earth terminal.
3. according to push switch claimed in claim 1, it is characterized in that, also possess:
Cover the lid of described switch enclosure;
Wherein, described lid has ground connection foot, the position consistency of described ground connection foot and described earth terminal and extend setting.
4. according to push switch claimed in claim 3, it is characterized in that:
With respect to the circuit board of installing, described ground connection foot has the face parallel with described circuit board at front end.
5. according to push switch claimed in claim 3, it is characterized in that:
With respect to the circuit board of installing, setting is extended in vertical mode by described ground connection foot, and described ground connection foot inserts in the through hole that is located on the described circuit board.
6. according to push switch claimed in claim 3, it is characterized in that:
With respect to the circuit board of installing, described earth terminal extends setting in vertical mode, and described earth terminal inserts in the through hole that is located on the described circuit board.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP332559/2008 | 2008-12-26 | ||
| JP2008332559A JP5228901B2 (en) | 2008-12-26 | 2008-12-26 | Push-on switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101770878A CN101770878A (en) | 2010-07-07 |
| CN101770878B true CN101770878B (en) | 2013-01-02 |
Family
ID=42503677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910260898 Expired - Fee Related CN101770878B (en) | 2008-12-26 | 2009-12-24 | Pressing switch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5228901B2 (en) |
| CN (1) | CN101770878B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581389A (en) * | 2003-08-07 | 2005-02-16 | 松下电器产业株式会社 | Push-on switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3896643B2 (en) * | 1997-07-22 | 2007-03-22 | 松下電器産業株式会社 | Push-on switch |
| JP3959983B2 (en) * | 2001-05-18 | 2007-08-15 | 松下電器産業株式会社 | Operation type electronic component and manufacturing method thereof |
| JP2003109453A (en) * | 2001-09-27 | 2003-04-11 | Alps Electric Co Ltd | Push-button switch |
| JP2003346598A (en) * | 2002-05-23 | 2003-12-05 | Yokowo Co Ltd | High-frequency changeover switch |
| JP2009193770A (en) * | 2008-02-13 | 2009-08-27 | Citizen Electronics Co Ltd | Push-button switch |
-
2008
- 2008-12-26 JP JP2008332559A patent/JP5228901B2/en not_active Expired - Fee Related
-
2009
- 2009-12-24 CN CN 200910260898 patent/CN101770878B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581389A (en) * | 2003-08-07 | 2005-02-16 | 松下电器产业株式会社 | Push-on switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101770878A (en) | 2010-07-07 |
| JP5228901B2 (en) | 2013-07-03 |
| JP2010153304A (en) | 2010-07-08 |
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Granted publication date: 20130102 Termination date: 20151224 |
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