US3819887A - Electric multi-position switch - Google Patents

Electric multi-position switch Download PDF

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Publication number
US3819887A
US3819887A US00325266A US32526673A US3819887A US 3819887 A US3819887 A US 3819887A US 00325266 A US00325266 A US 00325266A US 32526673 A US32526673 A US 32526673A US 3819887 A US3819887 A US 3819887A
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US
United States
Prior art keywords
rotor
plate
insulating
contact
stator
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
US00325266A
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English (en)
Inventor
P Lipschutz
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.)
BREVETS NIEMAN SOC D EXPL DES
SOC D EXPLOITATION DES BREVETS NIEMAN FR
Original Assignee
BREVETS NIEMAN SOC D EXPL DES
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Filing date
Publication date
Application filed by BREVETS NIEMAN SOC D EXPL DES filed Critical BREVETS NIEMAN SOC D EXPL DES
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Publication of US3819887A publication Critical patent/US3819887A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
    • B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/06—Key inserted and then turned to effect operation of the switch
    • 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
    • H01H19/563—Angularly-movable actuating part carrying contacts, e.g. drum switch with an initial separation movement perpendicular to the switching movement

Definitions

  • the present invention relates to an electric multiposition rotary switch which may be associated with an electrical or mechanical anti-theft device intended to prevent unauthorized use of a vehicle.
  • Sliding contact switches are known wherein a movable conducting plate, having a selected shape, electrically interconnects suitably distributed stationary contact elements, each of which corresponds to a wire pertaining to one of the electric circuits to be connected or disconnected, depending upon the position of the blade with respect to the said stationary contact elements.
  • Special switches are also known, pertaining to the same category as the preceeding one and wherein the movable part or parts generate, when rotating, a plane surface, the points of contact between the stationary contact elements and the movable part remaining, for each stationary element, in a plane (or in an area close to this plane) perpendicular to the axis of rotation.
  • switches are known in which the contacts take place on a cylindrical area, the axis of which is the axis of rotation. Such switches have been described, in particular, by the Applicant, for instance in French Patent Nos. 1,589,453 and 7l/l0,308.
  • the movable and stationary contacts are achieved by the pressure due to a resilient device which pushes each of them towards the associated pole and to the desired position: reliability of the resilient device is one of the criteria of quality; other factors, such as voltage drop at contact, selfcleaning, easy operation, also are of prime importance.
  • the known apparatus include notable improvements capable of withstanding quite a considerable number (hundreds of thousands) of repeated operations.
  • the Applicant has designed and constructed a type of switch which is rugged and greatly improved from the point of view of the above-mentioned criteria, without the use of special and costly contact pellets being necessary and without the final manufacturing cost being increased, thus favouring extensive use of the said switch.
  • the invention is characterized by a rational arrangement of the constituent members of the switch. the use of a resilient means through which the current does not flow and the wear of which is taken up automatically, as well as progressive mechanical tension of the members brought into contact.
  • the device may also be characterized by the existence of a single rotary contact brush, without a path which is complicated in development, and by the combined movements of rotation and translation to which this brush is subjected, these features ensuring both excellent passage of current and self-cleaning of the contact surfaces.
  • the device described hereinafter is used as a switch for connecting to or disconnecting from the power source of the vehicle the circuit of the accessories, of the ignition coil and of the starter control, and also in relation with the rotation of an anti-theft arrangement provided with mechanical control and safety and including also at least four stabilizable positions, namely: STOP, ACCESSORIES, RUN, STARTER (with, however, automatic return from the latter position to the preceeding one) and also, if required, a PARKING position.
  • stabilizable positions namely: STOP, ACCESSORIES, RUN, STARTER (with, however, automatic return from the latter position to the preceeding one) and also, if required, a PARKING position.
  • FIG. 1 is an elevational view of the whole switch
  • FIG. 2 is an elevational sectional view of the switch to a larger scale
  • FIG. 3 is a plane view of the same switch from below;
  • FIG. 4 is a plane and sectional view from below of the stator carrying the insulating base provided with contact elements andwith deviating ramps (rotor removed);
  • FIG. 5 is a plane view, from above, of the single contact plate (rotor) with its insulating drive support;
  • FIG. 6 is a perspective view of the insulating base intended to receive the pressed, moulded or stamped stationary contact elements in the shape of terminals, and carrying the deviating ramps;
  • FIGS. 7, 8 and 9 show respectively the sections of the stationary contact elements coming into contact with the arms of the rotor plate along their path.
  • the member 1 is the stator or the base made of insulating material and receiving the stationary contacts 3 to 6 appearing clearly in the plane views of FIGS. 3 and 4.
  • the reference number 3 designates the contact element connected to the positive terminal inserted at the centre of the stator and bent into an appropriate shape.
  • the wires ending at the lower portion of the stator are surrounded by the lips 3a for instance for the terminal 3, the folded portion of which, obtained for instance by stamping with or without previous conformation of the wire, ensures both a perfect electric contact and a strong maintaining in position.
  • stator I in the box 7 which is made from a resilient and mechanically resistant insulating material, preferably from nylon.
  • the box 7 having been secured by means of inaccessible screws (not shown) for instance to the body of an anti-theft device, receives the insulating rotor 2 provided with its single conducting plate 9, the arms 9a and 9b of which having an incurved shape in crosssection (see FIG. 9) with a plane central region, have raised edges facilitating the contact with the stationary contact elements or with the stationary paths.
  • the plate 9 is of course guided by a recess in the rotor which drives it (in this case, by a cross-shaped imprint 2b), receiving the drive end of the rotor of the anti-theft device or, at least, the end of a key or of an actuating button (FIG. 1).
  • the plate 9 is pushed by a spring of special steel resting, at one end, on the plate 9 itself by bearing substantially upon the push centre of the latter.
  • the box 7 is provided with two or three hooked tongues (such as 7a, 7b, 70) which are slightly flexible owing to their shape and to the material selected; the said tongues with their hooks are fitted into corresponding recesses of the stator 1 and of the cover 8 (see FIGS. 2, 3 and 4), so as to form'a compact assembly, against the resilient reaction of the spring 10 which ensures the pressing of the plate against the paths la, lb, 1L, ld carried by the stator 1.
  • two or three hooked tongues such as 7a, 7b, 70
  • the said tongues with their hooks are fitted into corresponding recesses of the stator 1 and of the cover 8 (see FIGS. 2, 3 and 4), so as to form'a compact assembly, against the resilient reaction of the spring 10 which ensures the pressing of the plate against the paths la, lb, 1L, ld carried by the stator 1.
  • these ramps present, in the plane of rotation of the two arms 9a and 9b of plate 9, a well-determined radial and circular distribution depending upon the kinematic and electric conditions imposed by the function of the switch, for instance defined by the one having four positions.
  • the outer insulating path la presents (as shown in FIG. 8) an ingoing ramp and ends also with an outgoing slope, the purpose of the slope and ramp being to facilitate the entry and exit of the end of arm 9b of plate 9 so as to deviate it progressively from the upper level of the ends of stationary contact elements 3 to 6 which protrude at the most by l millimeter from the upper and lower faces of the stator l in which they are fitted.
  • path lb which also is an outer path like the path la, and the outline of which is in the shape of a roof which (see FIGS. 8 and 9) is intended to open the contact, during the rotation of arm 9b of plate 9, with the contact elements 50 and 6 which are located respectively before and after this roof-shaped ramp, in the dextrogyre direction of rotation.
  • the STARTER" element 6 has its contact surface doubled by bending the conducting strip by 180 over itself.
  • the paths lb and lc are nearer to the centre of the rotor, so that the shorter arm 9a of the plate 9 rests directly upon these paths so as to be deviated notably from the contact elements ACCESSORIES 4 and COIL" 5b.
  • FIG. 8 shows that the contact elements ACCESSO- RIES" are in intermediate situations between the paths lb and 10, on the one hand, la and Id on the other hand, all of these paths, one after the other presenting mating hollows opposite these contact elements.
  • stator 1 its paths, la, lb, 1c, 1d and its conducting contact elements 3, 4, 5a, 5b, 6;
  • the box 7 which maintains the terminals or contact elements in the stator and serves to protect the fitted-in portion of the connecting wires;
  • the cover 8 which maintains the whole assembly by means of the resilient hookings 7a, 7b, 7c.
  • the plate 9 bears upon the contact element 3 connected to the positive terminal and maintained separated from the contact (at a distance of about I millimeter) owing to the arm 9b of the plate on a path or boss 1 a of the stator.
  • the plate 9 In the position ACCESSORIES, the plate 9 still bears upon the central contact element 3, its arm bearing upon the ACCESSORIES contact element 5b, whereas the arm 4b is maintained separated by the coil contact element 4 by the boss la.
  • the plate 9 In the position PARKING," the plate 9 still bears upon the contact element 3. It is still maintained separated from the contact elements by the passage of the arm 90 on the boss 1c of the stator and by the passage of the arm 9b on the boss la of the stator.
  • the contact plate 9 In the position RUN, the contact plate 9 still bears upon the contact element 3, the arm 9a being on the contact element coil 4 and the arm 9b being on the contact element 5a in the position ACCESSORIES.
  • a multi-position electric switch device adapted to be associated in particular with a vehicle anti-theft device and having at least four positions, respectively STOP, ACCESSORIES, RUN, STARTER, comprising an interconnecting rotor and insulating stator, stationary conducting contact elements carried by said insulating stator and connected respectively to the various circuits to be connected or to be disconnected, a single conducting plate having contact areas provided with raised lateral edges separated by a substantially plane intermediate contact region, means for fixedly securing said conducting plate to said rotor and spring means axially disposed between said conducting plate and said rotor for applying said conducting plate against said stationary conducting contact elements carried by said stator, wherein the improvement consists in that said conducting plate is provided with two tongues of unequal lengths having similar cross-sections and forming said contact areas, and in that the face of said stator comprising said stationary contact elements is provided with insulating bosses protruding over the level of said contact elements and being situated in the circular contact path of said long tongue and in the circular contact path
  • a device wherein said single contacting plate is permanently connected with an electric supply stationary contact element and is placed under the bearing action of said spring.
  • a device wherein the mounting of the said plate of the said rotor is made in a member of moulded insulating material provided on its internal face with a hollow imprint corresponding to the external shape of the said plate, the said member being provided on its opposite face with a cross-shaped imprint for positively driving the said rotor.
  • a device wherein the said stationary contact elements are inserted in an insulating base forming part of the said stator, each of the said stationary contact elements forming a single block pro vided with outlet claws in which is clamped the corresponding wire connected to the external circuits, which block passes through the said insulating base, which is carried by an insulating closing cover assembled to a box by hooking laminae solid with the latter, the said plate being pressed against the said base by the said spring interposed between the said plate and the said insulating rotor which is rotatably mounted in the said box.
  • a device wherein the said protruding bosses have a circular arcuate shape and a free height exceeding that of the said stationary contact elements, the effective outline profiles of the said bosses being arranged according to the specific diagram of the connections to be performed, the said single spring acting upon the barycentre of the said plate while being placed between the latter and a recess of the said insulating rotor so as to ensure a uniform distribution of the contact stresses.
  • a device wherein on each said boss are provided ramps with various slopes ensuring a progressive engagement of the said interconnecting plate on the level portions, some of the oppositely placed bosses being provided with opposite inclination ramps, in particular opposite to the aforesaid position called Accessories and some others in the shape of a roof pertaining to a single boss with a profile ensuring rapid coming into or out of contact of a tongue of the said plate with the stationary contact element corresponding to the position Starter, the said contact element having an increased contact section and the said plate being subjected in this position, jointly with the whole of the said rotor, to the action of a torsion spring which ensures automatic return of the said rotor from the position Starter to the position Run.”
  • a device wherein the said insulating box containing the said stator and the said rotor with its bearing spring is provided, at its periphery, with at least two resilient claws forming the aforesaid laminae, the hooks of which are forced into complementary imprints of the said cover by exerting an axial pressure against the reaction of the said spring.
  • a device wherein the said box is provided with sunk screws for securing the said device to the member carrying the shaft driving the said rotor, the said screws being accessible only from the interior of the said box after extracting the said cover from the said resilient claws of the said box and thereafter removing the said rotor with its said plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
US00325266A 1972-03-29 1973-01-22 Electric multi-position switch Expired - Lifetime US3819887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210948A FR2177532B1 (es) 1972-03-29 1972-03-29

Publications (1)

Publication Number Publication Date
US3819887A true US3819887A (en) 1974-06-25

Family

ID=9095966

Family Applications (1)

Application Number Title Priority Date Filing Date
US00325266A Expired - Lifetime US3819887A (en) 1972-03-29 1973-01-22 Electric multi-position switch

Country Status (9)

Country Link
US (1) US3819887A (es)
AR (1) AR196503A1 (es)
BR (1) BR7301129D0 (es)
CS (1) CS165954B2 (es)
DE (1) DE7311525U (es)
ES (1) ES411672A1 (es)
FR (1) FR2177532B1 (es)
GB (1) GB1397041A (es)
IT (1) IT976345B (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049932A (en) * 1975-06-04 1977-09-20 Neiman, S.A. Safety device for a rotary starter switch for an automobile vehicle
US6130596A (en) * 1999-02-25 2000-10-10 Yu; Tsung-Mou Auto tripping multi-state key switch
US6236299B1 (en) * 1999-01-28 2001-05-22 Tsung-Mou Yu Auto tripping key switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1598067A (en) * 1976-12-06 1981-09-16 Neiman Security Prod Electro-mechanical rotary switching devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763753A (en) * 1952-01-29 1956-09-18 Pollak Corp Joseph Electric switch
US3515832A (en) * 1967-05-26 1970-06-02 Lucas Industries Ltd Thrust washers for use with helically wound springs and improved ignition switches utilising such thrust washers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1445150A (fr) * 1964-08-26 1966-07-08 Spectrol Electronics Corp Commutateur miniature pour circuit imprimé

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763753A (en) * 1952-01-29 1956-09-18 Pollak Corp Joseph Electric switch
US3515832A (en) * 1967-05-26 1970-06-02 Lucas Industries Ltd Thrust washers for use with helically wound springs and improved ignition switches utilising such thrust washers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049932A (en) * 1975-06-04 1977-09-20 Neiman, S.A. Safety device for a rotary starter switch for an automobile vehicle
US6236299B1 (en) * 1999-01-28 2001-05-22 Tsung-Mou Yu Auto tripping key switch
US6130596A (en) * 1999-02-25 2000-10-10 Yu; Tsung-Mou Auto tripping multi-state key switch

Also Published As

Publication number Publication date
FR2177532A1 (es) 1973-11-09
GB1397041A (en) 1975-06-11
IT976345B (it) 1974-08-20
DE7311525U (de) 1973-07-19
BR7301129D0 (pt) 1974-07-11
CS165954B2 (es) 1975-12-22
AR196503A1 (es) 1974-02-06
FR2177532B1 (es) 1976-08-06
ES411672A1 (es) 1976-01-01

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