EP0353369A2 - Interrupteur à touche - Google Patents

Interrupteur à touche Download PDF

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Publication number
EP0353369A2
EP0353369A2 EP88312396A EP88312396A EP0353369A2 EP 0353369 A2 EP0353369 A2 EP 0353369A2 EP 88312396 A EP88312396 A EP 88312396A EP 88312396 A EP88312396 A EP 88312396A EP 0353369 A2 EP0353369 A2 EP 0353369A2
Authority
EP
European Patent Office
Prior art keywords
pushbutton
substrate
spring
keyswitch
hole
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Withdrawn
Application number
EP88312396A
Other languages
German (de)
English (en)
Other versions
EP0353369A3 (fr
Inventor
I-Long Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0353369A2 publication Critical patent/EP0353369A2/fr
Publication of EP0353369A3 publication Critical patent/EP0353369A3/fr
Withdrawn legal-status Critical Current

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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
    • H01H13/50—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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring

Definitions

  • This invention relates to a keyswitch, more particularly to one which has a coil spring for biasing a pushbutton to move upward.
  • a keyswitch includes an electrically insulative substrate having a hole formed therethrough; a conductor attached to the upper surface of the substrate and including a terminal pin electrically connected to the conductor; a pushbutton; and an electrically conductive coil spring, in the shape of a conical helix which has a vertex at its lower end, carrying the pushbutton on its upper end and having an axial extension extending downward from its lower end through the hole of the substrate so that the pushbutton is biased to move upward.
  • the coil spring is spaced apart from the conductor when it is in a normal position. When the pushbutton is depressed, one of the turned portion of the coil spring contacts the conductor so that an electrically conductive path is established between the terminal pin and the axial extension of the spring.
  • a keyswitch includes an electrically insulative substrate having an upper surface on which a first electrically conductive path and a second electrically conductive path are separately formed; a pushbutton; and an electrically insulative body attached to the upper surface of the substrate and having a hole formed through the body, both a part of the first path and a part of the second path being exposed in the hole of the body; and an electrically conductive coil spring, in the shape of a conical helix which has a vertex at its upper end, carrying the pushbutton on the upper end thereof and having a large-diameter lowermost turned portion which is fixed on the upper surface of the body in such a manner that the large-diameter turned portion surrounds the hole of the body.
  • a keyswitch according to a first embodiment of this invention includes a pushbutton 1 and a coil spring 2 for supporting the pushbutton 1 on the upper end thereof.
  • Two terminal pins 3 are integral with an annular conductor 4.
  • An insulative substrate 5 has a central hole 6, and two side holes 6′ through which the terminal pins 3 are respectively passed.
  • the coil spring 2 has one greatest-diameter turned portion at the middle portion thereof, and a vertex at the lower end of the spring 2 so that the lower portion of the spring 2 is in the shape of a conical helix.
  • the spring 2 has an axial extension 8 which extends downward from the lower end of the spring 2 through the central hole 6 of the substrate 5.
  • the spring 2 is normally spaced apart from the conductor 4. Referring to Fig. 2, when the pushbutton 1 is depressed, an intermediate turned portion of the spring 2 contacts the conductor 4 so that a conductive path is established between the terminal pins 3 and the axial extension 8 of the spring 2. It should be appreciated that because the turned portions of the spring 2 are of different compression forces, the keyswitch can offer a satisfactory touching sense to the operator.
  • a left terminal pin A contacts a coil spring S
  • a right terminal pin B is spaced apart from the spring S.
  • the spring S separates from the left terminal pin A and contacts the right terminal pin B.
  • a keyswitch according to a second embodiment of this invention includes a pushbutton 1a and a conductive coil spring 2a for supporting the pushbutton 1a on the upper end thereof.
  • a second terminal pin 3a has a jaw at the upper end thereof for holding an annular conductor 4a and an insulative substrate 5a together. In this way, the second terminal pin 3a can make an electrical connection with the conductor 4a.
  • the substrate 5a has a hole 6a formed therethrough inside of the conductor 4a.
  • the lower portion of the spring 2a is in the shape of a conical helix which has a vertex at its lower end.
  • a third terminal pin 8a extends downward from the lower end of the spring 2a through the hole 6a of the substrate 5a.
  • the spring 2a is also normally spaced apart from the conductor 4a. Referring to Fig. 5, when the pushbutton 1a is depressed, an intermediate turned portion of the spring 2a contacts the conductor 4a so that a conductive path is established between the second terminal pin 3a and the third terminal pin 8a.
  • a keyswitch includes a pushbutton 1b and a conductive coil spring 2b for supporting the pushbutton 1b on the upper end thereof.
  • Two fourth terminal pins 3b respectively have a jaw at their upper ends for holding two conductors 4b and a substrate 5b therebetween in such a manner that the conductors 4b form two separate conductive paths on the upper surface of the substrate 5b, as shown in Fig. 10.
  • An insulative plate 7b is clamped tightly between the upper ends of the fourth terminal pins 3b positioning the plate 7b on the upper surfaces of the conductors 4b so that both the inner end portions of the conductors 4b are exposed in the central hole 8b of the plate 7b.
  • an insulative material c may be coated on the lowermost turned portions of the spring 2b for the purpose of electrically isolating the spring 2b from the conductors 4b.
  • the spring 2b is in the shape of a conical helix which has a vertex at the upper end thereof.
  • the lowermost turned portion of the spring 2b is arranged to always contact the upper surface of the plate 7b.
  • an intermediate turned portion of the spring 2b passes through both the lowermost turned portion of the spring 2b and the hole 8b of the plate 7b so as to contact the conductors 4b and establish a conductive path between the conductors 4b.
  • the substrate 5b is made of a ceramic material and the conductors 4b are made of thick film conductive materials coated on the substrate 5b.
EP19880312396 1988-08-01 1988-12-29 Interrupteur à touche Withdrawn EP0353369A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22731088A 1988-08-01 1988-08-01
US227310 1988-08-01

Publications (2)

Publication Number Publication Date
EP0353369A2 true EP0353369A2 (fr) 1990-02-07
EP0353369A3 EP0353369A3 (fr) 1991-03-06

Family

ID=22852603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880312396 Withdrawn EP0353369A3 (fr) 1988-08-01 1988-12-29 Interrupteur à touche

Country Status (2)

Country Link
EP (1) EP0353369A3 (fr)
AU (1) AU2762988A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2009318A1 (fr) * 2007-06-30 2008-12-31 Zweibrüder Optoelectronics GmbH Ressort de compression
CN102889326A (zh) * 2012-10-15 2013-01-23 安徽江淮汽车股份有限公司 无并圈螺旋弹簧
WO2015090367A1 (fr) * 2013-12-17 2015-06-25 Siemens Aktiengesellschaft Module électronique de protection pour convertisseur hvdc
CN105280442A (zh) * 2015-10-19 2016-01-27 锦州汉拿电机有限公司 带螺旋弹簧触点的防结冰起动机电磁开关
CN113048174A (zh) * 2021-03-24 2021-06-29 北京汽车集团越野车有限公司 一种弹性元件、弹性组件和汽车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247905A1 (de) * 1972-03-09 1973-09-20 Casio Computer Co Ltd Tastschalteranordnung
DE2905140A1 (de) * 1979-02-10 1980-08-21 Vdo Schindling Elektrischer druckschalter fuer leiterplatten
DE2925653A1 (de) * 1979-06-26 1981-01-08 Standard Elektrik Lorenz Ag Elektrischer schalter
GB2073494A (en) * 1980-04-03 1981-10-14 Schoeller & Co Elektrotech Electrical keyswitch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247905A1 (de) * 1972-03-09 1973-09-20 Casio Computer Co Ltd Tastschalteranordnung
DE2905140A1 (de) * 1979-02-10 1980-08-21 Vdo Schindling Elektrischer druckschalter fuer leiterplatten
DE2925653A1 (de) * 1979-06-26 1981-01-08 Standard Elektrik Lorenz Ag Elektrischer schalter
GB2073494A (en) * 1980-04-03 1981-10-14 Schoeller & Co Elektrotech Electrical keyswitch

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2009318A1 (fr) * 2007-06-30 2008-12-31 Zweibrüder Optoelectronics GmbH Ressort de compression
CN102889326A (zh) * 2012-10-15 2013-01-23 安徽江淮汽车股份有限公司 无并圈螺旋弹簧
WO2015090367A1 (fr) * 2013-12-17 2015-06-25 Siemens Aktiengesellschaft Module électronique de protection pour convertisseur hvdc
CN105793985A (zh) * 2013-12-17 2016-07-20 西门子公司 用于高压直流转换器的电子保护模块
US10109444B2 (en) 2013-12-17 2018-10-23 Siemens Aktiengesellschaft Electronic module for protecting a HVDC converter from current surges of energy discharges from a capacitor of the converter
CN105793985B (zh) * 2013-12-17 2019-02-12 西门子公司 用于高压直流转换器的电子保护模块
CN105280442A (zh) * 2015-10-19 2016-01-27 锦州汉拿电机有限公司 带螺旋弹簧触点的防结冰起动机电磁开关
CN105280442B (zh) * 2015-10-19 2017-04-26 锦州汉拿电机有限公司 带螺旋弹簧触点的防结冰起动机电磁开关
CN113048174A (zh) * 2021-03-24 2021-06-29 北京汽车集团越野车有限公司 一种弹性元件、弹性组件和汽车

Also Published As

Publication number Publication date
AU2762988A (en) 1990-02-01
EP0353369A3 (fr) 1991-03-06

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