US3346707A - Multi-position electrical switch with improved guide rail and movable contact structure - Google Patents

Multi-position electrical switch with improved guide rail and movable contact structure Download PDF

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Publication number
US3346707A
US3346707A US549869A US54986966A US3346707A US 3346707 A US3346707 A US 3346707A US 549869 A US549869 A US 549869A US 54986966 A US54986966 A US 54986966A US 3346707 A US3346707 A US 3346707A
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US
United States
Prior art keywords
housing
contact
interior
electrical switch
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.)
Expired - Lifetime
Application number
US549869A
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English (en)
Inventor
Bock Willy
Mutschler Erich
Theurer Karl-Heinz
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.)
SWF Auto Electric GmbH
Original Assignee
SWF Spezialfabrik fuer Autozubehoer Gustav Rau 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
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Application filed by SWF Spezialfabrik fuer Autozubehoer Gustav Rau GmbH filed Critical SWF Spezialfabrik fuer Autozubehoer Gustav Rau GmbH
Application granted granted Critical
Publication of US3346707A publication Critical patent/US3346707A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • B60Q1/40—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position
    • B60Q1/42—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position having mechanical automatic return to inoperative position due to steering-wheel position, e.g. with roller wheel control
    • B60Q1/425—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction having mechanical, electric or electronic automatic return to inoperative position having mechanical automatic return to inoperative position due to steering-wheel position, e.g. with roller wheel control using a latching element for resetting a switching element
    • 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
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch

Definitions

  • the fixed terminals are formed by projections on the interior of a housing which carries a slot directly adjacent the projection.
  • An electrically conductive member includes a contact portion which is wrapped around the projection and a terminal portion which is directed through the slot of the housing and offset in respect to the slot to anchor the contact member in position.
  • the contacts may be of a variety of different configurations, for example bar-shaped, rectangular or polygonal.
  • This invention relates in general to electrical switch construction and to a method of constructing such a switch, and particularly to a new and useful electrical switch for use in vehicles which includes a rotary switch element having a bias contact member which may be moved into engagement with a selected pair of a plurality of contact bodies which are inserted into the housing from the exterior and which are arranged in association with an interior formation around which it is positioned to provide a resiliently mounted stationary contact assembly.
  • the electrical switch of the present invention is particularly designed for use in motor vehicles and includes a rotary switch part which has a contact element at the end which protrudes into the switch housing.
  • the rotary switch part can be connected successively with several contact pairs, which contact pairs are made of a plurality of spaced individual contacts which are connected with plugs outside the switch housing.
  • Normally switches of this character are designed so that bolts or hollow rivets are arranged in the switch housing as contacts which are nested with cable connections arranged outside the switch housing, for example plugs. Due to this form of connection of the contacts with the plugs, a zone with additional transfer resistance is obtained which reduces the efiiciency of the switch.
  • a further disadvantage of the known switches is that the contact bolts or hollow rivets cannot be adjusted once 3,346,7'07 Patented Oct. 10, 1967 they have been assembled. If it should develop that there is an improper position between the contact element and the individual pairs of contacts, it is only a point contact instead of a satisfactory line contact so that a very high transfer resistance appears which will make the switch useless in a short period.
  • the contact bodies and their respective outer plugs are designed as one-piece plug contact elements which can be secured directly on the switch housing.
  • the fastening of these elements is accomplished in accordance with the invention by means of a crossed lap joint.
  • the interior portion of the contact plug which is adapted to be arranged within the housing is made of a generally U-shaped configuration, with the legs on each side of the U-shaped portion being arranged substantially perpendicular to the broad surface of the outer plug portion which is located on the exterior of the housing.
  • the plug contacts are also provided with lateral notches so that the edge of the U-shaped contact body facing the housing bottom is tooth-shaped toward the end of the two U-shaped contact bodies of the construction.
  • the narrow surfaces of the plug facing the housing bottom which are formed by notches are designed as inclined surfaces, the lowest points of the two inclined surfaces bearing on the lateral narrow faces of the plug.
  • the leg faces of the U-shaped contact body within the housing are inclined toward each other, the wider openings facing the housing bottom so that they can bear on projections provided in the housing which are designed in accordance with the inner form of the contact body.
  • slots are provided on the interior of the housing adjacent the formations thereof which are arranged substantially perpendicularly to the broad surfaces of projections which are formed on the interior of the housing.
  • the terminal plug members may thus be inserted through the slots of the housing, and the U-shaped interior portions may be oriented around the projections. In this manner, the plug elements may be inserted into the housing under a biased potential.
  • the contact body may be formed of any desired gene-rally U-shaped configuration and thus may be formed with a rounded surface, flat or acute angle surface corresponding to the required switching power to be formed between the movable contact and the U-shaped contact body.
  • the assembly of the parts is very simple to carry out. A satisfactory position of the contact body is always assured by the location of the abutment on the interior of the housing.
  • an object of the invention to provide an improved multi-contact switch element which includes a plurality of spaced stationary contacts which are formed by a contact terminal member which includes an interior substantially U-shaped portion which is adapted to engage around a projection on the interior of the housing and a flat extending portion forming a terminal which extends through the housing.
  • a further object of the invention is to provide a method of forming a switch which includes forming a housing with a plurality with spaced projections and with a slot through the housing defined alongside one end of the projections, comprising inserting a plurality of contact body members through the slots and wrapping them around the projections on the interior of the housing, and
  • a further object of the invention is to provide a rotary switch particularly for use in automobiles which includes a movable rotary contact member and a plurality of stationary contact elements arranged in a row with the stationary contact elements being formed from a contact member which includes a U-shaped interior portion and an external portion extending through a slot of the housing providing a connection terminal therefor.
  • a further object of the invention is to provide a rotary switch which is simple in design, rugged in construction and economical to manufacture.
  • FIG. 1 is a sectional view of a switch constructed in accordance with the invention taken along the line 11 of FIG. -2;
  • FIG. 2 is an elevational view of the interior of the switch with an end cover removed;
  • FIG. 3 is an end elevational view of the switch indicated in FIG. 1 taken in the direction of the arrow A;
  • FIG. 4 is a partial sectional view taken on the line 4-4 of FIG. 2;
  • FIG. 5 is a section taken on the line 55 of FIG. 4 but indicating the terminal plug before it is in a seated position as indicated in FIG. 4;
  • FIG. 6 is a development of the terminal plug and housing end and side walls indicated in FIG. 4;
  • FIGS. 7, 8 and 9 are somewhat schematic plan views indicating the contact between the movable roller contact and the contact terminal member of various embodiments of the invention.
  • FIGS. 1 to 6 the invention embodied therein as indicated in FIGS. 1 to 6 comprises a switch housing 1 having a rotary switch part 2 arranged therein and journaled for rotation.
  • the part 2 is provided with a tubular pin or extension portion 3 which extends outwardly through an opening in a side wall of an extension portion 1a of the housing 1.
  • a knob 4 is threaded onto the pin 3 and it is provided with a bore which aligns with a bore defined in the extension 3 and the part 2 to accommodate a switching bar 6.
  • the switching bar 6 may be reciprocated axially by pushing a push-button element 5, and it is normally biased to an outward position by means (not shown).
  • the switching bar is connected to means (not shown) for controlling the discharge of liquid from a liquid tank (not shown).
  • the part 2 is provided with a cavity 9 in which is positioned a compression spring 7 which biases a contact roll member or cylinder 8 outwardly.
  • the housing is provided with a wall portion or end wall 14 which is formed with a plurality of spaced slots 10.
  • Projections 17 are formed alongside each slot preferably on an adjacent horizontal wall 14a.
  • the projections 17 may of course be formed on the same wall as the slots as shown in FIG. 6, and they are advantageously arranged so that an end thereof which is advantageously rounded is oriented adjacent the center of the slot 10 and extends substantially perpendicularly thereto.
  • Other arrangements may of course be provided to form outlines of projections as indicated in FIGS. 7, 8 and 9, for example.
  • contact terminal elements or stationary contact members generally designated 11 are formed with a flat plug or terminal portion 12 which may be easily inserted through the slots 10 to project on the exterior of the housing.
  • the contact members 11 include an interior contact element or contact body portion 13 which is arranged inside the housing which is of generally U-shaped configuration.
  • the interior contact body portion 13 is generally U-shaped and is formed with leg wall portions which diverge downwardly to the housing wall and which have a bottom edge of a generally toothshaped configuration which engage the side wall 14 of the housing.
  • the wider spacing between the leg portion 16 is at the bottoms or the portions located directly adjacent the housing wall 14. They are advantageously formed in a conical configuration as indicated best in FIG. 5.
  • the plug portion 12 it is generally preferable to arrange the plug portion 12 so that it extends slightly turned from the axis of the U-shaped contact body 13.
  • the projection extends substantially perpendicular to the slot 10 so that when the plug contact body mem bers 11 are inserted, they are already held under a biased potential in the housing wall 14. This is accomplished due to the angle of the slot in respect to the projection so that the body portion must be twisted slightly in order to effect insertion in the slot.
  • the contact body 13 is then pulled to the housing projection and the inclined surfaces 18 penetrate through the housing wall to form a fir-m fit with the housing wall.
  • the housing 1 is formed with a journal 19 located centrally below the wall 14 which is formed by injection molding on the switch housing and which is advantageously made of a plastic material.
  • the journal 19 holds the base plate 20* and a valve housing (not represented) can be connected with the switch housing for delivering liquid, for example, through wafer-headed rivets. In this manner, the size of the switch can be kept small since there is no space required for the passage of rivets or screws.
  • FIGS. 7, 8 and 9 represent various forms which the contact body portions 13', 13", and 13" may take for each of the contact terminal elements 11', 11 and 11".
  • the roller contacts 8, 8 and 8" will engage the terminal elements as indicated.
  • An electrical switch including a housing having wall means with a plurality of spaced slots defined in said Wall means, and a contact terminal element including a flat terminal portion extending through a respective slot of the housing and disposed at the exterior of the housing to form a terminal connection, an interior portion located on the interior of said housing forming a contact element, and a projection formed on said housing wall means adjacent each slot, said interior portion of each contact terminal element being engaged around an associated projection.
  • An electrical switch including a housing having wall means with a plurality of spaced slots defined in said wall means, and a contact terminal element including a fiat terminal portion extending through a respective slot of the housing and disposed at the exterior of the housing to form a terminal connection, an interior portion located on the interior of said housing forming a contact element, and a projection formed on said housing wall means adjacent each slot, said interior portion of each contact terminal element being engaged around an associated projection, a rotary switch member rotatably mounted in said housing to permit it to be swung into selective contact between adjacent pairs of said interior portions of said contact terminal elements, said rotary switch member including a swinging arm having a recess therein, a cylindrical contact member positioned in said recess, and spring means biasing said contact member out of said recess into engagement with one of said interior portions of said contact terminal elements.
  • An electrical switch including a housing having wall means with a plurality of spaced slots defined in said wall means, and a contact terminal element including a flat terminal portion extending through a respective slot of the housing and disposed at the exterior of the housing to form a terminal connection, an interior portion located on the interior of said housing forming a contact element, said contact terminal elements interior portions being substantially U-shaped and include straight leg portions arranged on each side of an associated projection.
  • An electrical switch including a housing having wall means with a plurality of spaced slots defined in said wall means, and a contact terminal element including a flat terminal portion extending through a respective slot of the housing and disposed at the exterior of the housing to form a terminal connection, an interior portion located on the interior of said housing forming a contact element, said contact terminal elements including a substantially U-shaped slot formed between said flat terminal portion and said interior portion defining a tooth configuration at the lower interior extremity of said interior portion which engages said housing wall.
  • An electrical switch including a housing having wall means with a plurality of spaced slots defined in said wall means, and a contact terminal element including a flat terminal portion extending through a respective slot of the housing and disposed at the exterior of the housing to form a terminal connection, an interior portion located on the interior of said housing forming a contact element, said slots being disposed at an acute angle with respect to the longitudinal axis of projections formed on said housing wall.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
US549869A 1965-12-31 1966-05-13 Multi-position electrical switch with improved guide rail and movable contact structure Expired - Lifetime US3346707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES101288A DE1248137B (de) 1965-12-31 1965-12-31 Kontaktanordnung in einem elektrischen Schalter

Publications (1)

Publication Number Publication Date
US3346707A true US3346707A (en) 1967-10-10

Family

ID=7523657

Family Applications (1)

Application Number Title Priority Date Filing Date
US549869A Expired - Lifetime US3346707A (en) 1965-12-31 1966-05-13 Multi-position electrical switch with improved guide rail and movable contact structure

Country Status (6)

Country Link
US (1) US3346707A (en, 2012)
BE (1) BE691422A (en, 2012)
DE (1) DE1248137B (en, 2012)
FR (1) FR1505203A (en, 2012)
GB (1) GB1138221A (en, 2012)
NL (1) NL6609840A (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715527A (en) * 1970-06-27 1973-02-06 Amp Inc Rotary switch with double nosed contacts fixedly secured to stator section
US4527022A (en) * 1984-04-10 1985-07-02 Vazquez Frank B Tap changer
US4558193A (en) * 1983-03-31 1985-12-10 C & K Components, Inc. Switch lock
US4748297A (en) * 1986-07-11 1988-05-31 Carlingswitch, Inc. Rotary switch
US20180174781A1 (en) * 2016-12-16 2018-06-21 Johnson Electric S.A. Switching device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2425713A1 (fr) * 1978-05-09 1979-12-07 Antivols Simplex Sa Interrupteur electrique rotatif pour vehicules automobiles
CN107546066B (zh) * 2017-10-19 2020-04-03 中国科学技术大学 一种实验室用于高压控制的小型自动化机械开关装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695933A (en) * 1953-06-08 1954-11-30 Chicago Telephone Supply Corp Electrical switch
FR1353172A (fr) * 1962-03-15 1964-02-21 Busch Jaeger Duerener Metall Lame de contact formée par une bande métallique plate pour commutateurs électriques, notamment pour commutateurs à cames
US3196222A (en) * 1959-02-19 1965-07-20 Electro Commutation L Electrical contact assembly with offset contact structure
US3225148A (en) * 1963-10-11 1965-12-21 Carling Electric Inc Rotary switch with make-before break contact structure
US3229052A (en) * 1963-05-24 1966-01-11 Westinghouse Electric Corp Rotary switch construction with rotor contact position limiting means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761028A (en) * 1955-03-09 1956-08-28 Herman C Teetor Electric plug with disabling means
DE1082145B (de) * 1958-04-23 1960-05-19 Rau Swf Autozubehoer Tachometergehaeuse fuer Kraftfahrzeuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695933A (en) * 1953-06-08 1954-11-30 Chicago Telephone Supply Corp Electrical switch
US3196222A (en) * 1959-02-19 1965-07-20 Electro Commutation L Electrical contact assembly with offset contact structure
FR1353172A (fr) * 1962-03-15 1964-02-21 Busch Jaeger Duerener Metall Lame de contact formée par une bande métallique plate pour commutateurs électriques, notamment pour commutateurs à cames
US3229052A (en) * 1963-05-24 1966-01-11 Westinghouse Electric Corp Rotary switch construction with rotor contact position limiting means
US3225148A (en) * 1963-10-11 1965-12-21 Carling Electric Inc Rotary switch with make-before break contact structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715527A (en) * 1970-06-27 1973-02-06 Amp Inc Rotary switch with double nosed contacts fixedly secured to stator section
US4558193A (en) * 1983-03-31 1985-12-10 C & K Components, Inc. Switch lock
US4527022A (en) * 1984-04-10 1985-07-02 Vazquez Frank B Tap changer
US4748297A (en) * 1986-07-11 1988-05-31 Carlingswitch, Inc. Rotary switch
US20180174781A1 (en) * 2016-12-16 2018-06-21 Johnson Electric S.A. Switching device
CN108204199A (zh) * 2016-12-16 2018-06-26 德昌电机(深圳)有限公司 开关装置

Also Published As

Publication number Publication date
DE1248137B (de) 1967-08-24
GB1138221A (en) 1968-12-27
FR1505203A (fr) 1967-12-08
NL6609840A (en, 2012) 1967-07-03
BE691422A (en, 2012) 1967-05-29

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