GB2113920A - Push-button electrical switch - Google Patents
Push-button electrical switch Download PDFInfo
- Publication number
- GB2113920A GB2113920A GB08302013A GB8302013A GB2113920A GB 2113920 A GB2113920 A GB 2113920A GB 08302013 A GB08302013 A GB 08302013A GB 8302013 A GB8302013 A GB 8302013A GB 2113920 A GB2113920 A GB 2113920A
- Authority
- GB
- United Kingdom
- Prior art keywords
- push
- button switch
- annular
- dome
- shaped member
- 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.)
- Withdrawn
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
- H01H13/12—Movable parts; Contacts mounted thereon
-
- 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
- H01H2215/00—Tactile feedback
- H01H2215/004—Collapsible dome or bubble
- H01H2215/012—Positioning of individual dome
Landscapes
- Push-Button Switches (AREA)
Abstract
A push-button switch has a rubber domed shaped member 13 having an annular base 13a which engages an annular channel 11a in an insulating base board 11. Projections 11d upstanding from the base board 11 are bent over to hold the dome shaped member 13 captive on the base board 11. A pair of spaced contacts 12 are mounted on the base board 11 within the area encircled by the channel 11a. An electrically conductive rubber contact 14 on the inner surface of the dome shaped member 13 is arranged to bridge the two contacts 12 when the dome is depressed. By providing the base board 11 with the means to hold the dome shaped member captive, the number of separate parts required for the assembly of the switch is reduced. <IMAGE>
Description
SPECIFICATION
Push-button switch
The present invention relates to push-button switches.
According to the present invention, there is provided a push-button switch comprising a cupshaped rubber cover having a rubber electrical contact on an inner face thereof, and an electrically insulating board, the board having fixed electrical contacts in a central portion thereof, outer and inner circular walls encircling said fixed contacts to define an annular recess for receiving the annular rim of said rubber cover, and a plurality of projections formed around said annular recess and bent inwardly to hold the rim of the rubber cover captive on the board.
According to the present invention, there is further provided a push-button switch comprising an electrically insulating base, first electrical contact means on said base, an annular channel on said base encircling said first contact means, a dome-shaped member of electrically insulating resilient material having an annular extremity engaging said annular channel, projection means on said base holding the annular extremity of the dome-shaped member captive in said annular channel, and second contact means on the inner surface of the dome-shaped member to cooperate with the first contact means when the dome-shaped member is deformed against the bias of its own resilience.
A push-button switch embodying the invention will now be described with reference to the accompanying diagrammatic drawing in which:
Figure 1 is a section through a previously proposed push-button switch;
Figure 2 is a perspective exploded view of the push-button switch; and
Figure 3 is a section through the push-button switch of Figure 2.
In the previously proposed push-button switch shown in Figure 1, a cup-shaped rubber cover 4 is provided with a conductive rubber contact 3 on an inner surface thereof. The cover 4 is mounted on an insulating board 2 provided with a pair of fixed contacts 1, 1 buried therein. A cylindrical insulating case 5 is mounted on the insulating board 2 so as to enclose the rubber cover 4. The lower end portion 4a of the rubber cover 4 is held captive between the case 5 and insulating board 2, and a push-button 6 is movably fitted in the case 5. When this push-button 6 is pressed, the rubber cover 4 is deformed to cause the rubber contact 3 to come into engagement with the two fixed contacts 1.When the push-button 6 is then released, the rubber cover 4 returns to its original position due to its own resilience and so the pushbutton 6 also returns to the state that it was in before it had been pressed.
In this push-button switch, the lower end portion 4a of the rubber cover 4 is held between the case 5 and insulating board 2, so that the rubber cover 4 is held firmly. However, this pushbutton switch requires a separate case 5 and push-button 6. This causes the number of parts and manufacturing cost to increase, and renders an operation for assembling the push-button switch troublesome. Accordingly, the productivity of the push-button switch is low, and the dimensions thereof increase.
The push-button shown in Figures 2 and 3 has an insulating board or base 11 carrying a pair of fixed contacts 12, 12. Contact portions 1 2a of the fixed contacts 12, 12 are exposed in the central section of the insulating board 11, and terminal portions 1 2b project downward from a peripheral section thereof.
The insulating board 11 is also provided with an outer circular wall 11 a, and an inner circular wall 11 b, which is formed so as to be spaced from the outer wall 11 a at a predetermined distance and surround the contact portions 12a. The inner circular wall 11 b is slightiy lower than the outer circular wall 11 a, and an annular groove 11 c is formed therebetween. At least two projections .1.... are formed around the groove 11 c substantially in concentric relation thereto.
A cup- or dome-shaped rubber cover 13 is provided with an electrically conductive rubber contact 14 in an inner portion thereof. The rubber cover 13 has an annular end portion 1 3a at its lower extremity, and a cup-shaped pressing portion 1 3b at an upper section thereof. The annular end portion 1 3a is fitted in the annular groove 11 c between the outer and inner circular walls 11 a,11 b on the insulating board 11.
Each of the projections .1.... is bent inward by thermally deforming or pressing the same, to fix under pressure the projections 11 d to an upper surface of the end portion 1 3a of the rubber cover 1 3. Consequently, the rubber cover 1 3 is set with the end portion 1 3a in a firmly-held state.
When the pressing portion 1 3b of the rubber cover 1 3 in the push-button switch is pressed in the direction of the arrow A in Figure 3, the rubber cover 1 3 is deformed, so that the rubber contact 1 4 comes into engagement with the two fixed contacts 12, 1 2. Consequently, the contacts are closed. When the pressing portion 1 3b is released, the rubber cover 13 returns to the original position under its own resilience, so that the contacts are opened.
The pressing portion 1 3b of the rubber cover
13 is pressed in some cases in the direction
(lateral direction) of an arrow B in Figure 3. At this time, the end portion 1 3a is drawn to the left in
Figure 3 as the rubber cover 13 is deformed but the inner circular wall 11 b prevents the end portion 1 3a from being displaced. Thus, the end portion 1 3a is kept held between the outer and inner circular walls 11 a, 11 b, so that the rubber cover 13 is not removed.
The end portion 13a of the cup-shaped rubber
cover 13, which is provided with the conductive
rubber contact 14 on an inner surface thereof, is fitted and locked in the annular recess 11 c
between the outer and inner circular walls 11 a,
11 b on the insulating board 11 , and the projections 11 ... . are bent inwardly to thereby hold the end portion 1 3a captive. Therefore, even when a lateral force is applied to the pressing portion 1 3b of the rubber cover 13, the displacement of the rubber cover 1 3 will be prevented by the inner circular wall 11 b. The rubber cover 13 is pressed and supported by the bent projections .1.... at the same time.
Accordingly, the rubber cover 13 is not dislodged from the insulating board 1. Moreover, a separate case 5 and push-button are not required. This allows the number of parts to be reduced, and an inexpensive push-button switch allowing a high manufacturing productivity to be obtained.
Claims (9)
1. A push-buttom switch comprising a cupshaped rubber cover having a rubber electrical contact on an inner face thereof and an electrically insulating board, the board having fixed electrical contacts in a central portion thereof, outer and inner circular walls encircling said fixed contacts to define an annular recess for receiving the annular rim of said rubber cover, and a plurality of projections formed around said annular recess and bent inwardly to hold the rim of the rubber cover captive on the board.
2. A push-button switch comprising an electrically insulating phase, first electrical contact means on said base, an annular channel on said base encircling said first contact means, a dome-shaped member of electrically insulating resilient material having an annular extremity engaging said annular channel, projection means on said base holding the annular extremity of the dome-shaped member captive in said annular channel, and second contact means on the inner surface of the dome-shaped member to cooperate with the first contact means when the dome-shaped member is deformed against the bias of its own resilience.
3. A push-button switch according to Claim 2 wherein the dome-shaped member is of rubber.
4. A push-button switch according to Claim 2 or to Claim 3 wherein the second contact means comprises electrically conductive rubber.
5. A push-button switch according to any one of claims 2 to 4 wherein said annular groove is defined by a pair of concentric walls upstanding from a surface of said base.
6. A push-button switch according to Claim 5 wherein said projection means comprises a plurality of castellations in the outer one of said pair of concentric walls.
7. A push-button switch according to any one of Claims 2 to 6 wherein said base has a recess in which said first contact means are located.
8. A push-button switch according to any one of Claims 2 to 7 wherein said first contact means comprises a pair of spaced contacts and said second contact means comprises a single contact arranged to bridge the pair of spaced contacts when the dome is depressed.
9. A push-buttom switch substantially as hereinbefore described with reference to Figures 2 and 3 of the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP904882U JPS58113229U (en) | 1982-01-26 | 1982-01-26 | push button switch |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8302013D0 GB8302013D0 (en) | 1983-02-23 |
GB2113920A true GB2113920A (en) | 1983-08-10 |
Family
ID=11709750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08302013A Withdrawn GB2113920A (en) | 1982-01-26 | 1983-01-25 | Push-button electrical switch |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS58113229U (en) |
DE (1) | DE3247734A1 (en) |
FR (1) | FR2520550B1 (en) |
GB (1) | GB2113920A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4571466A (en) * | 1983-12-12 | 1986-02-18 | Kokoku Rubber Industrial Company Limited | Spring unit for a keyboard |
US4600819A (en) * | 1985-03-08 | 1986-07-15 | Mechanical Enterprises, Inc. | Switch assembly |
EP0204223A1 (en) * | 1985-05-30 | 1986-12-10 | Siemens Aktiengesellschaft | Push button module |
US4641004A (en) * | 1983-12-02 | 1987-02-03 | Siemens Aktiengesellschaft | Key module for keyboards having a dome-shaped key member of resilient material |
GB2213647A (en) * | 1988-01-08 | 1989-08-16 | Marconi Electronic Devices | Push-button key switches |
US5999084A (en) * | 1998-06-29 | 1999-12-07 | Armstrong; Brad A. | Variable-conductance sensor |
US6310606B1 (en) | 1992-03-05 | 2001-10-30 | Brad A. Armstrong | Multi-plane sheet connected sensors |
US6344791B1 (en) | 1998-07-24 | 2002-02-05 | Brad A. Armstrong | Variable sensor with tactile feedback |
US6351205B1 (en) * | 1996-07-05 | 2002-02-26 | Brad A. Armstrong | Variable-conductance sensor |
US6404584B2 (en) | 1997-10-01 | 2002-06-11 | Brad A. Armstrong | Analog controls housed with electronic displays for voice recorders |
US6415707B1 (en) | 1997-10-01 | 2002-07-09 | Brad A. Armstrong | Analog controls housed with electronic displays for coffee makers |
US6456778B2 (en) | 1997-10-01 | 2002-09-24 | Brad A. Armstrong | Analog controls housed with electronic displays for video recorders and cameras |
US6469691B1 (en) | 1999-05-11 | 2002-10-22 | Brad A. Armstrong | Analog controls housed with electronic displays for hand-held web browsers |
US6532000B2 (en) | 1997-10-01 | 2003-03-11 | Brad A. Armstrong | Analog controls housed with electronic displays for global positioning systems |
CN1107327C (en) * | 1997-09-01 | 2003-04-30 | 阿尔卑斯电气株式会社 | Button switch |
US8674932B2 (en) | 1996-07-05 | 2014-03-18 | Anascape, Ltd. | Image controller |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972057A (en) * | 1989-06-20 | 1990-11-20 | Mitsuku Denshi Kogyo Kabushiki Kaisha | Push button switch |
JP4647700B2 (en) * | 2009-10-29 | 2011-03-09 | 北陸電気工業株式会社 | Push-on switch |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR682123A (en) * | 1929-09-21 | 1930-05-23 | Electrical contact device, especially for low current | |
JPS4424330Y1 (en) * | 1966-08-09 | 1969-10-15 | ||
US3728509A (en) * | 1970-09-26 | 1973-04-17 | Alps Electric Co Ltd | Push-button switch with resilient conductive contact member with downwardly projecting ridges |
JPS5638934B2 (en) * | 1973-12-18 | 1981-09-09 | ||
US3905246A (en) * | 1974-06-05 | 1975-09-16 | Illinois Tool Works | Construction and method for forming a plunger seal |
US4021630A (en) * | 1975-04-25 | 1977-05-03 | Neomed Incorporated | Hermetically sealed resilient contact switch having surgical applications |
JPS55148127U (en) * | 1979-04-12 | 1980-10-24 | ||
JPS5915374Y2 (en) * | 1979-09-04 | 1984-05-08 | 星電器製造株式会社 | push switch |
-
1982
- 1982-01-26 JP JP904882U patent/JPS58113229U/en active Granted
- 1982-12-23 DE DE19823247734 patent/DE3247734A1/en not_active Withdrawn
-
1983
- 1983-01-25 GB GB08302013A patent/GB2113920A/en not_active Withdrawn
- 1983-01-25 FR FR8301079A patent/FR2520550B1/en not_active Expired - Lifetime
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641004A (en) * | 1983-12-02 | 1987-02-03 | Siemens Aktiengesellschaft | Key module for keyboards having a dome-shaped key member of resilient material |
US4571466A (en) * | 1983-12-12 | 1986-02-18 | Kokoku Rubber Industrial Company Limited | Spring unit for a keyboard |
US4600819A (en) * | 1985-03-08 | 1986-07-15 | Mechanical Enterprises, Inc. | Switch assembly |
WO1986005316A1 (en) * | 1985-03-08 | 1986-09-12 | Mechanical Enterprises, Inc. | Switch assembly |
EP0204223A1 (en) * | 1985-05-30 | 1986-12-10 | Siemens Aktiengesellschaft | Push button module |
US4705925A (en) * | 1985-05-30 | 1987-11-10 | Siemens Aktiengesellschaft | Key module with key member retained by swing members |
GB2213647A (en) * | 1988-01-08 | 1989-08-16 | Marconi Electronic Devices | Push-button key switches |
US9081426B2 (en) | 1992-03-05 | 2015-07-14 | Anascape, Ltd. | Image controller |
US6310606B1 (en) | 1992-03-05 | 2001-10-30 | Brad A. Armstrong | Multi-plane sheet connected sensors |
US8674932B2 (en) | 1996-07-05 | 2014-03-18 | Anascape, Ltd. | Image controller |
US6351205B1 (en) * | 1996-07-05 | 2002-02-26 | Brad A. Armstrong | Variable-conductance sensor |
US6563415B2 (en) | 1996-07-05 | 2003-05-13 | Brad A. Armstrong | Analog sensor(s) with snap-through tactile feedback |
CN1107327C (en) * | 1997-09-01 | 2003-04-30 | 阿尔卑斯电气株式会社 | Button switch |
US6415707B1 (en) | 1997-10-01 | 2002-07-09 | Brad A. Armstrong | Analog controls housed with electronic displays for coffee makers |
US6404584B2 (en) | 1997-10-01 | 2002-06-11 | Brad A. Armstrong | Analog controls housed with electronic displays for voice recorders |
US6470078B1 (en) | 1997-10-01 | 2002-10-22 | Brad A. Armstrong | Analog controls housed with electronic displays for telephones |
US6496449B1 (en) | 1997-10-01 | 2002-12-17 | Brad A. Armstrong | Analog controls housed with electronic displays for clocks |
US6518953B1 (en) | 1997-10-01 | 2003-02-11 | Brad A. Armstrong | Analog controls housed with electronic displays for remote controllers having feedback display screens |
US6529185B1 (en) | 1997-10-01 | 2003-03-04 | Brad A. Armstrong | Analog controls housed with electronic displays for electronic books |
US6532000B2 (en) | 1997-10-01 | 2003-03-11 | Brad A. Armstrong | Analog controls housed with electronic displays for global positioning systems |
US6538638B1 (en) | 1997-10-01 | 2003-03-25 | Brad A. Armstrong | Analog controls housed with electronic displays for pagers |
US6456778B2 (en) | 1997-10-01 | 2002-09-24 | Brad A. Armstrong | Analog controls housed with electronic displays for video recorders and cameras |
US5999084A (en) * | 1998-06-29 | 1999-12-07 | Armstrong; Brad A. | Variable-conductance sensor |
US6344791B1 (en) | 1998-07-24 | 2002-02-05 | Brad A. Armstrong | Variable sensor with tactile feedback |
US6504527B1 (en) | 1999-05-11 | 2003-01-07 | Brad A. Armstrong | Analog controls housed with electronic displays for computer monitors |
US6559831B1 (en) | 1999-05-11 | 2003-05-06 | Brad A. Armstrong | Analog controls housed with electronic displays for personal digital assistants |
US6469691B1 (en) | 1999-05-11 | 2002-10-22 | Brad A. Armstrong | Analog controls housed with electronic displays for hand-held web browsers |
Also Published As
Publication number | Publication date |
---|---|
JPH0334020Y2 (en) | 1991-07-18 |
DE3247734A1 (en) | 1983-07-28 |
GB8302013D0 (en) | 1983-02-23 |
FR2520550B1 (en) | 1990-05-11 |
FR2520550A1 (en) | 1983-07-29 |
JPS58113229U (en) | 1983-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2113920A (en) | Push-button electrical switch | |
US4385218A (en) | Electric switch | |
US6271487B1 (en) | Normally open extended travel dual tact switch assembly with sequential actuation of individual switches | |
US6271491B1 (en) | Push button switch including dome-shaped movable contact having reverse function | |
EP0721196B1 (en) | Push lock switch | |
KR100302028B1 (en) | Push-on switch | |
US4556769A (en) | Key switch devices with key guide means | |
US6107586A (en) | Push-on switch | |
US6423911B2 (en) | Multi-directional operating switch capable of being operated in both depressing direction and tilting direction | |
US2795678A (en) | Sealed electrical switches | |
US3242298A (en) | Mounting means for operator of electric switch | |
KR100279397B1 (en) | Multi-directional switch | |
EP1014405B1 (en) | Push switch | |
US5905235A (en) | Key assembly | |
KR920003203B1 (en) | Push-button switch | |
GB2140624A (en) | Push-button switch | |
US6274834B1 (en) | Push-button switch with part to a wire rod exposed to an inside bottom of housing to form a contact portion | |
JP3798323B2 (en) | Input device | |
JPS6230254Y2 (en) | ||
JP3128436B2 (en) | Push button switch | |
JPH0433607Y2 (en) | ||
JP2004139997A (en) | Push-button switch | |
KR100357922B1 (en) | switch | |
KR20000053420A (en) | push button switch and method for manufacturing same | |
JPH07147115A (en) | Push button switch |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |