EP0040324A2 - Commutateur à bouton-poussoir - Google Patents

Commutateur à bouton-poussoir Download PDF

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Publication number
EP0040324A2
EP0040324A2 EP81102803A EP81102803A EP0040324A2 EP 0040324 A2 EP0040324 A2 EP 0040324A2 EP 81102803 A EP81102803 A EP 81102803A EP 81102803 A EP81102803 A EP 81102803A EP 0040324 A2 EP0040324 A2 EP 0040324A2
Authority
EP
European Patent Office
Prior art keywords
push button
switch according
spring
housing
button switch
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.)
Granted
Application number
EP81102803A
Other languages
German (de)
English (en)
Other versions
EP0040324B1 (fr
EP0040324A3 (en
Inventor
Wolfgang Ing.-Grad. Labude
Karl-Heinz Bauer
Edgar Maisch
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.)
Preh GmbH
Original Assignee
Preh GmbH
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 Preh GmbH filed Critical Preh GmbH
Publication of EP0040324A2 publication Critical patent/EP0040324A2/fr
Publication of EP0040324A3 publication Critical patent/EP0040324A3/de
Application granted granted Critical
Publication of EP0040324B1 publication Critical patent/EP0040324B1/fr
Expired 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard

Definitions

  • the invention is based on a push button switch according to the preamble of claim 1.
  • Such push-button switch are required, and multiple type, for example, for a push button for switching aggregates although the individual channels of E HE mpfä n g s, such as radio and television receivers.
  • the preset tuning voltage and thus the assigned station or channel can be switched on by pressing a single button.
  • the set tuning voltage is stored in the channel memory in the form of spindle resistors or rotary resistors connected as voltage dividers.
  • a push button switch in connection with a push button unit is already known, the push button switch consisting of a narrow, elongated switching rod which is guided in the front and rear wall of the housing.
  • the push button switch consisting of a narrow, elongated switching rod which is guided in the front and rear wall of the housing.
  • contact rails are held on the bottom of the housing, which, among other things, consists of a connecting part and a number of U-shaped spring parts corresponding to the number of shift rods.
  • One end of the spring part is connected to the connecting part, while the free end cooperates with the lugs of the shift rod.
  • the free ends of the spring members against respective associated D are the lugs pressed rahtteme.
  • the spring parts thus serve at the same time as a return spring for the shift rods as well as an electrical connecting element. When switched on, the spring parts are subjected to both bending and torsion.
  • a pushbutton switch is already known in which a plunger can be displaced in a housing against the force of a return spring.
  • the snap spring and the contact arm are made in one piece and J-shaped. With the arcuate intermediate piece, the spring is pivotably mounted in a fixed contact piece. The free end of the long spring arm lies in a cutter bearing of the ram. The long spring arm is thus clamped arched on one side between two abutments.
  • the short spring arm serves as a contact arm and it carries a contact rivet.
  • two disposed on either side of the ram catch springs are provided and also the S tössel still a support member is present, that is in the direction of displacement of the plunger up and down movably supported.
  • the pushbutton unit shown in FIG. 1 has, for example, eight pushbuttons for switching on the tuning voltages preset in the individual channel memories.
  • the channel accumulators consist of spindle resistors in which a spring carrier 49 with a sliding contact 50 is guided along a spindle 48 by turning a push-button 12.
  • the wiper contact makes an electrical connection between a collector rail or the spindle and a resistive element 9 (see Figure 6) which is applied on art paper of an insulating plate H or plastic in multiple arrangement in a known manner. Dies.e Isolierstoffplatte, which is designated in Figure 1 with 2, forms the end of an open on one side housing 1.
  • the housing itself is made of a fiberglass-reinforced plastic for reasons of stability and thus the return accuracy.
  • the soldering tabs 3 of the resistance elements protrude laterally out of the housing.
  • a push knob 12 which has a corrugated or otherwise non-slip edge. With this the push button can be turned directly. However, the push button can also be turned using a socket wrench, not shown in FIG. 1.
  • the push knob is provided with a cavity 13 which has a certain inner profile. For adjustment, the socket wrench is inserted into this cavity, the socket wrench having an outer profile which interacts with the inner profile in the sense of being carried along.
  • FIG. 1 a coupling element for the frequency range conversion, which is made of plastic. From the exploded view of Figure 6, the system frequency range switching or B is andumscrien easier to recognize.
  • This coupling element 51 has a suspension ring 52 on the circumference, which cooperates with an opposite slope on the outside of the push-button 12.
  • the push-button at the end of the bevel has an axially parallel toothing, the crosswise teeth 53 of which, when pressed, protrude into a corresponding inner profile of the coupling element 51 and act in the sense of a driver coupling. By pressing in the push button, the coupling element 51 is also pressed against the housing wall.
  • the pushbutton has integrally formed snap tongues 59 which protrude through the coupling element into a longitudinal section 60 of the spindle and interact with the housing in a latching manner.
  • the coupling element also has an integrally formed pointer 14 which, depending on the latching position, is visible in one of the three display windows 15 of the locking rail 7 arranged in the form of a segment of a circle.
  • a swivel projection 65 which has a continuous cutout 66 in the middle, is integrally formed on the coupling element 51.
  • a resilient loop 69 of a wire-shaped contact spring 68 is inserted through this cutout. As will be explained, this contact spring serves for frequency range switching or band switching. If the coupling element is rotated into one of its locking positions, this contact spring 68 is also pivoted accordingly by a small angular range.
  • busbar 62 and 63 made of metal, both of which are electrically separated from one another by an insulating intermediate piece 64.
  • a first busbar 61 also made of metal.
  • These busbars are common to all push buttons and their number corresponds to the number of preselectable frequency ranges or bands.
  • Each of these busbars has elongated recesses 67 corresponding to the number of pushbuttons, on the edge of which contact parts 7o are bent opposite one another in pairs on the longitudinal sides.
  • These contact parts serve on the one hand as a holder on the housing and on the other hand as a counter-contact to the resilient loop 69 of the contact spring. As can be seen from Figure 6, these contact parts are located either at the right end of the recess 67, in the middle or at the left end, so that a total of three switch positions are possible.
  • the locking rail 7 is guided on the front outside of the housing in such a way that the locking rail has locking lugs 21 formed on its long side, which engage with locking receptacles 22 on the housing.
  • the locking rail is provided on the underside with an integrally formed web 23 which extends from the transverse side in the direction of displacement and is guided in a groove 24 in the housing. Since the astnasen protrude into the locking receivers and the locking rail has to perform a displacement stroke, the latching mounts are as in V erschie Jardintung extending slots running the length of which must at least correspond to the displacement stroke.
  • the openings 25 in the locking rail, through which the push buttons 12 and the push buttons 16 protrude, are likewise enlarged at least by the displacement stroke.
  • a mounting tab 26 is formed, with the help of which the push button assembly can be attached to the chassis of a television receiver.
  • the pushbutton unit shown in FIG. 1 can be used to store eight channels. If even more channels are required, several pushbutton units can be lined up in a modular manner.
  • each assembly has four snap hooks 27 on one side of the housing, which engage openings of the neighboring assembly, not shown in FIG. 1.
  • locking lugs are provided for exact positioning of the units relative to one another, which are fitted into holes 28 of the neighboring unit.
  • the pushbuttons should also be mutually triggerable here.
  • each locking rail has a lateral driving arm 29 on one long side, which engages in a correspondingly profiled recess in the neighboring locking rail and ensures play-free driving.
  • the push button 16 consists of a flat key slide 4, one end of which is guided in a guide in a rear longitudinal wall 11 of the switch housing. The other end, which is guided in a front longitudinal wall, carries on its front end protruding from the housing a push button 19 which is pressed onto the key slide or which is integrally molded directly onto the key slide.
  • Each key slide is held in the housing and limited in its direction of displacement by a retaining lug 37 and by a stop which is not visible in FIG.
  • the push button assembly shown in Figure 1 is intended to be used in particular in television receivers. For this it is necessary that the frequency range switchover is carried out in addition to the channel switch-on. That is why two independent contact systems are operated with the key slide. For this reason, two leaf springs 8 are arranged in elongated recesses 36 in the key slide. 4 and 5, each leaf spring 8 is J-shaped with a long spring arm 30 and a short spring arm 31, both of which are integrally connected to one another via an arcuate intermediate piece 32.
  • This leaf spring is clamped between two abutments in such a way that it is slightly curved on one side.
  • One way to achieve this is to arrange the two abutments in a non-aligned manner. The slight curvature of the leaf spring to one side should ensure. ensures that when the two abutments move relative to each other, the leaf spring always bulges further to this side.
  • the leaf spring itself can be made entirely of silver or of an inexpensive material, at least on its contacting surface is provided with a silver layer or another highly conductive contact layer.
  • the leaf spring also fulfills a double function, since on the one hand it is a contact spring and on the other hand it is also a return spring for the push button.
  • the long arm essentially takes over the function of the return spring, while the short arm ontaktarm serves as K. Due to this special J-shaped design of the leaf spring, the push button is very easy to operate.
  • the first abutment 33 is located in the key slide 4 at the end of the recess closer to the push button 19.
  • the second abutment is formed by a V-shaped cutting edge bearing 35 in a first fixed contact piece 34.
  • This contact piece is also a spring element, which is made of metal.
  • a plurality of spring elements are connected to one another by a connecting part 41 and constitute a first contact rail 4o, the soldering connection part 42 of which is led laterally out of the housing.
  • this first contact rail 40 is attached to the rear longitudinal wall 11 of the housing. Also on this rear longitudinal wall, a second contact rail 43 is held with the solder connection part 53, this contact rail being used for switching on the channel, while the first contact rail is used for switching through the frequency range selection.
  • Both contact rails are fastened to the longitudinal wall by means of screws 55 in such a way that they are electrically insulated from one another by an insulating plate 54. They are also laterally offset from one another.
  • a spring element of the first and the second contact rail form a pair and they are arranged so that they with the two Recesses in the key switch are aligned. Since on the one hand the spring elements belonging in pairs lie one behind the other and on the other hand the leaf springs are of the same size, the recesses in the key slide are of different lengths.
  • the long spring arm lies in the first abutment in the key slide. With the arcuate intermediate piece 32, the leaf spring 8 lies in the V-shaped cutting edge bearing 35 of the spring element 34 of the contact rail 40.
  • the short spring arm 31 has at its free end an angled portion directed towards the long spring arm 30. As can be seen from FIG. 5, the long spring arm presses the short spring arm against the second stationary contact piece 38 by means of the bend. This significantly increases the contact pressure.
  • the first spring arm thus serves both as a return spring for the key slide and as a support for the short spring arm, which in the switched-on position establishes an electrical connection between the contact rail around the second stationary contact piece.
  • two types of second fixed contact pieces are available.
  • this consists in one piece of a metal part with an upper part which interacts with the short spring arm 31 of the leaf spring, as can be seen in FIGS. 4 and 5, and with a lower part which acts as contact pieces 72 and serves to contact the spindle 48.
  • an opening 73 which is to receive the spindle, runs in the middle from bottom to top in the middle.
  • Two fork arms protrude into this opening from both sides, the lower ends 74 of which are provided with latching lugs which snap into corresponding latching recesses in the housing, and the upper, inwardly pointing spring tongues 75 of which are pretensioned in a groove 76 of the spindle.
  • the second stationary contact piece for the frequency range switchover consists of an angled loop 71 of the contact spring.

Landscapes

  • Push-Button Switches (AREA)
  • Slide Switches (AREA)
EP81102803A 1980-05-16 1981-04-11 Commutateur à bouton-poussoir Expired EP0040324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3018810 1980-05-16
DE19803018810 DE3018810A1 (de) 1980-05-16 1980-05-16 Drucktastenschalter

Publications (3)

Publication Number Publication Date
EP0040324A2 true EP0040324A2 (fr) 1981-11-25
EP0040324A3 EP0040324A3 (en) 1982-05-12
EP0040324B1 EP0040324B1 (fr) 1984-09-12

Family

ID=6102636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102803A Expired EP0040324B1 (fr) 1980-05-16 1981-04-11 Commutateur à bouton-poussoir

Country Status (5)

Country Link
US (1) US4431876A (fr)
EP (1) EP0040324B1 (fr)
JP (1) JPS577032A (fr)
DE (1) DE3018810A1 (fr)
ES (1) ES8203527A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597620A1 (fr) * 1986-04-21 1987-10-23 Spectec Disposition de vision optique bidimensionnel obtenu au moyen d'un controle de la deflexion du faisceau lumineux au moyen d'au moins un moyen faisant office de detecteur lateral
CN109841444A (zh) * 2019-03-28 2019-06-04 东莞市凝锐开关有限公司 组合开关

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209913C2 (de) * 1982-03-18 1986-02-06 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Drucktastenaggregat
US5106586A (en) * 1990-05-23 1992-04-21 Eastman Kodak Company J-shaped spring used in incubator
DE4037454A1 (de) * 1990-11-24 1992-05-27 Marquardt Gmbh Schaltermodul

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268701A (en) * 1964-04-22 1966-08-23 Alloys Unltd Inc Clad electrical contacts
DE1791232B1 (de) * 1964-12-24 1971-12-30 Hopt Electronic Gmbh Abstimmvorrichtung fuer hochfrequenz nachrichten uebertra gungsgeraete
DE1590817A1 (de) * 1965-03-20 1970-07-09 Vdo Schindling Elektrischer Schnappschalter
DE1919036B2 (de) * 1969-04-15 1971-11-04 Drucktastenaggregat
GB1313125A (en) * 1970-04-29 1973-04-11 Kienzle Apparate Gmbh Taximeter keyboard unit
GB1372927A (en) * 1972-01-19 1974-11-06 Plessey Co Ltd Electric switches
DE2264953C3 (de) * 1972-06-20 1978-03-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Photoelektrischer Schalter
US3792387A (en) * 1973-01-26 1974-02-12 Gte Sylvania Inc Pushbutton tuning system
DE2360168A1 (de) * 1973-12-03 1975-06-05 Marquardt J & J Schalter, insbesondere taster
DE2423075C2 (de) * 1974-05-13 1983-10-20 J.& J. Marquardt, 7201 Rietheim-Weilheim Elektrischer Schalter
DE2510902C3 (de) * 1975-03-13 1979-10-04 J. & J. Marquardt, 7201 Rietheim Elektrischer Schalter
DE2833184C2 (de) * 1978-07-28 1983-06-01 Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt Drucktastenaggregat
US4177367A (en) * 1978-07-18 1979-12-04 Amf Incorporated Push button switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597620A1 (fr) * 1986-04-21 1987-10-23 Spectec Disposition de vision optique bidimensionnel obtenu au moyen d'un controle de la deflexion du faisceau lumineux au moyen d'au moins un moyen faisant office de detecteur lateral
CN109841444A (zh) * 2019-03-28 2019-06-04 东莞市凝锐开关有限公司 组合开关
CN109841444B (zh) * 2019-03-28 2024-01-09 东莞市凝锐开关有限公司 组合开关

Also Published As

Publication number Publication date
DE3018810C2 (fr) 1988-03-17
ES502244A0 (es) 1982-04-01
EP0040324B1 (fr) 1984-09-12
EP0040324A3 (en) 1982-05-12
JPH0159687B2 (fr) 1989-12-19
DE3018810A1 (de) 1981-11-26
ES8203527A1 (es) 1982-04-01
US4431876A (en) 1984-02-14
JPS577032A (en) 1982-01-14

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