EP0326807B1 - Tastschalter - Google Patents

Tastschalter Download PDF

Info

Publication number
EP0326807B1
EP0326807B1 EP89100197A EP89100197A EP0326807B1 EP 0326807 B1 EP0326807 B1 EP 0326807B1 EP 89100197 A EP89100197 A EP 89100197A EP 89100197 A EP89100197 A EP 89100197A EP 0326807 B1 EP0326807 B1 EP 0326807B1
Authority
EP
European Patent Office
Prior art keywords
slide
pressure plate
push
button
plunger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89100197A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0326807A3 (de
EP0326807A2 (de
Inventor
Fritz Berger
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.)
Elektro-Apparatebau Olten AG
Original Assignee
Elektro-Apparatebau Olten AG
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 Elektro-Apparatebau Olten AG filed Critical Elektro-Apparatebau Olten AG
Priority to AT89100197T priority Critical patent/ATE102739T1/de
Publication of EP0326807A2 publication Critical patent/EP0326807A2/de
Publication of EP0326807A3 publication Critical patent/EP0326807A3/de
Application granted granted Critical
Publication of EP0326807B1 publication Critical patent/EP0326807B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H13/02—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

Definitions

  • the present invention relates to a key switch according to the preamble of claim 1.
  • Such push buttons are described for example in CH-PS 612 791. They all have the advantage that they show the connection contact lugs for the various switch contacts on their back in a plane that is oriented at right angles to the scanning direction and are therefore easily accessible after installation in a mounting wall.
  • the slide moved at the press of a button acts on a number of plungers corresponding to the number of switching contacts, which in turn actuate the movable contact carriers.
  • the dimensional tolerances that occur during the manufacture of the individual parts have the consequence that if there are several switch contacts and a corresponding number of plungers, the switch contacts are not actuated simultaneously when the button is pressed.
  • the object of the present invention is to improve a pushbutton switch of the type mentioned in such a way that all switch contacts are actuated simultaneously while the button is pressed.
  • the push button switch shown in FIG. 1 has a housing 1 with a front frame 2, which is visible from the front after installation in a control panel.
  • a front frame 2 Arranged in the front frame 2 is the transparent, push-in hood support 3, on which a colored, translucent dome, not shown, is placed.
  • the pressure hood support 3 is provided on its neck 4 with two mutually opposite latching windows 5, which are used for connection to a slide 6 which is axially displaceable in the housing 1 and which is provided with corresponding latching lugs 8 for this purpose.
  • the designed with a hollow profile slide 6 has a substantially cylindrical inner surface into which the Dome neck 4 can be plugged in without play until its latching windows 5 latch with corresponding latches 8.
  • the pressure hood support 3 and the slide 6 thus form a fixed part which can be axially displaced in the housing 1.
  • the displacement of the slide 6 upwards is limited by two tabs 7, which cooperate with corresponding not visible projections on the inner wall of the housing 1.
  • the pushbutton switch is equipped with a signal lamp, it has two lamp contact springs 9 fixedly arranged in the housing 1, to which a lamp, not shown, which is arranged in the housing 1 and which can be replaced, is connected.
  • the slide 6 is provided on its lower end face with four support legs 10, against which an annular pressure plate 11 rests.
  • the number of support legs is irrelevant. It is essential that they form at least three points of contact with respect to the pressure plate 11, which points of contact delimit a surface.
  • the housing 1 is provided with two latching windows 12, into which two latching lugs 13 are latched in the neck 14 of an upper housing part 15.
  • the upper housing part 15 forms, with a lower housing part 16, a switching element housing 17 which is firmly connected to the housing and forms the key switch.
  • the switching element housing 17 three plungers 18 to 20 are vertically displaceably mounted.
  • Each plunger 18 to 20 has the top End a center hole 21, in which an associated pin 22 engages on the pressure plate 11. Since the pins 22 lie on a diameter line of the pressure plate 11, the points of application of the forces transmitted by the plungers 18 to 20 to the pressure plate 11 are also on this diameter line and thus axially symmetrical to the vertical axis of the pressure plate 11.
  • the pressure plate is perpendicular to this diameter line 11 stiffened with a rib 23 which forms at its ends two downwardly open bearing caps 24. These each serve to receive the upper end of a compression spring 25, which is pushed with the lower end over a centering pin 26 on the upper housing part 15 and is supported there. The compression springs 25 thus press the pressure plate 11 against the support legs 10 and keep them in contact with them.
  • the lamp contact springs 9 are inserted into the corresponding cross-sectionally U-shaped guides in the upper housing part 15, in which they are held with a friction fit.
  • the legs 10 of the slide 6 push the pressure plate 11 further down (and thus away from the angled ends) until it presses slightly against one another presses the plunger 18 to 20 and rests against it without play.
  • the compression springs 25 are also compressed further.
  • the plungers 18 to 20 engage in a form-fitting manner on the free ends of the movable contact carriers 27, which are pivotably mounted on the switching element housing 17 at 28.
  • a tension spring 29 continues to act, which pulls it upwards and into contact with the plunger. Due to the tension spring 29, the contact carrier 27 always has the tendency to assume its basic position and, in addition, the associated plunger 18 to 20 is pressed upwards and held in abutment with the pressure plate 11, so that it exerts a restoring force on the slide 6 in the direction of movement.
  • One, two or three movable contact carriers 27 can be present in the switching element housing 17. Depending on the number of movable contact carriers 27, there are one, two or three plungers 18 to 20.
  • Fig. 2 shows a cross section through a switching contact in the switching element housing 17.
  • the movable contact carrier 27 carries a contact bridge with two contacts 30, each resting on a stop pin 31 in the basic position.
  • the movable contact carrier 27 is on the one hand pivotably mounted at 28 and has an articulation point 32.
  • the tension spring 29 engages at the free end of the movable contact 27 and presses it against the plunger 18. This is held in contact with the pressure plate 11 and presses the slide 6 with the pressure hood support 3 upwards.
  • the free end of the movable contact carrier 27 is pivoted downward about the joint 32 until the movable contact carrier 27 bends upwards when a dead position is exceeded and its contact bridge with the contacts 30 against the fixed pair of contacts 33 and bridges. If the plunger 28 is released, the tension spring 29 pulls it up again until the movable contact carrier 27 kinks downward when the dead position is exceeded and the contacts 30 snap back onto the stop pin 31.

Landscapes

  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Catching Or Destruction (AREA)
  • Massaging Devices (AREA)
EP89100197A 1988-02-01 1989-01-07 Tastschalter Expired - Lifetime EP0326807B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100197T ATE102739T1 (de) 1988-02-01 1989-01-07 Tastschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH329/88 1988-02-01
CH329/88A CH675503A5 (ro) 1988-02-01 1988-02-01

Publications (3)

Publication Number Publication Date
EP0326807A2 EP0326807A2 (de) 1989-08-09
EP0326807A3 EP0326807A3 (de) 1991-02-06
EP0326807B1 true EP0326807B1 (de) 1994-03-09

Family

ID=4184540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100197A Expired - Lifetime EP0326807B1 (de) 1988-02-01 1989-01-07 Tastschalter

Country Status (6)

Country Link
US (1) US4945194A (ro)
EP (1) EP0326807B1 (ro)
JP (1) JP2810078B2 (ro)
AT (1) ATE102739T1 (ro)
CH (1) CH675503A5 (ro)
DE (1) DE58907148D1 (ro)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6102394A (en) * 1999-07-12 2000-08-15 Wms Gaming, Inc. Button panel system for a gaming device
US6508910B2 (en) 2000-05-18 2003-01-21 Hexcel Corporation Self-adhesive prepreg face sheet for sandwich panels
CN111899996B (zh) * 2020-08-12 2022-08-19 河南中烟工业有限责任公司 配电网低压反送电自动切断方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB813628A (en) * 1954-09-03 1959-05-21 Nsf Ltd Improvements in or relating to electric switches of the toggle action type
US3816681A (en) * 1972-04-24 1974-06-11 Airpax Electronics Snap action switch
US3867598A (en) * 1973-10-09 1975-02-18 Westinghouse Electric Corp Control switch
JPS52142667U (ro) * 1976-04-07 1977-10-28
CH612791A5 (ro) * 1977-01-12 1979-08-15 Schweitzer H E Ag
CH615292A5 (ro) * 1977-01-12 1980-01-15 Schweitzer H E Ag
CH650618A5 (de) * 1980-07-08 1985-07-31 Olten Ag Elektro Apparatebau Drucktaste mit impuls- oder rastfunktion.
CH653171A5 (de) * 1981-11-05 1985-12-13 Olten Ag Elektro Apparatebau Tastschalter.
EP0160206A3 (en) * 1984-03-22 1987-07-22 Omron Tateisi Electronics Co. Push-button switch
CH670169A5 (ro) * 1985-10-28 1989-05-12 Olten Ag Elektro Apparatebau

Also Published As

Publication number Publication date
JPH01227315A (ja) 1989-09-11
CH675503A5 (ro) 1990-09-28
JP2810078B2 (ja) 1998-10-15
EP0326807A3 (de) 1991-02-06
ATE102739T1 (de) 1994-03-15
EP0326807A2 (de) 1989-08-09
US4945194A (en) 1990-07-31
DE58907148D1 (de) 1994-04-14

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