US3622718A - Safety devices for starter motors of internal-combustion engines - Google Patents

Safety devices for starter motors of internal-combustion engines Download PDF

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Publication number
US3622718A
US3622718A US6716A US3622718DA US3622718A US 3622718 A US3622718 A US 3622718A US 6716 A US6716 A US 6716A US 3622718D A US3622718D A US 3622718DA US 3622718 A US3622718 A US 3622718A
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United States
Prior art keywords
piston
engine
switch
starter motor
safety
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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
US6716A
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English (en)
Inventor
Paul 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.)
Valeo Neiman SA
Original Assignee
Societe dExploitation des Brevets Neiman SA
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Publication of US3622718A publication Critical patent/US3622718A/en
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Classifications

    • 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
    • H01H27/063—Key inserted and then turned to effect operation of the switch wherein the switch cannot be moved to a third position, e.g. start position, unless the preceding movement was from a first position to a second position, e.g. ignition position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2710/00—Control of valve gear, speed or power
    • F01L2710/006—Safety devices therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5889—For automotive vehicles
    • Y10T70/5956—Steering mechanism with switch

Definitions

  • This invention relates to a safety device for preventing the actuation of a starter motor of an internal-combustion engine already in operation.
  • This device comprising in a body a key-operated safety lock with or without a cam controlling an antitheft device and incorporating means for controlling a rotary switch inserted in electric circuits to be closed, inter alia the starter motor energizing circuit, is characterized in that the lock body comprises a chamber connected to a source of low pressure or suction such as the engine induction manifold and a member movable in-said chamber and responsive on the one hand to said suction and on the other hand to the contrary force exerted by a resilient element, said member being so associated with said lock to prevent said switch from closing the starter-energizing circuit when the engine is running and said member is subjected to said suction, and to permit the operation of said starter switch only when the engine is inoperative.
  • a source of low pressure or suction such as the engine induction manifold
  • a member movable in-said chamber responsive on the one hand to said suction and on the other hand to the contrary force exerted by a resilient element
  • the pressure in the induction manifold or in the head of one of its volumetric chambers, for example a cylinder, is zero, so that the safety feature is inoperative and the starter can be energized to start the engine.
  • a suction is produced in the induction manifold which is capable of either operating a carburetor in the case of a carburetion engine or ensuring a proper filling of the combustion chambers in the case of an injection engine.
  • This suction is applied to a piston, a diaphragm or any other movable or deformable (flexible) member actuating in turn either a lock-forming mechanism to inhibit the starter motor drive means, or a switch to open the electric energizing circuit of the starter motor.
  • FIG. I is an axial section showing a key switch provided with a steering-lock antitheft device and with the safety device of-this invention
  • FIG. 2 is a cross section taken along the line llII of FIG. 1;
  • F IG. 3 shows in elevational view of a modified form of embodiment, i.e., the central portion of the lock provided with the safety device of this invention
  • FIG. 4 is a plan view from above of the modified form of embodiment of FIG. 3;
  • FIG. 5 illustrates in fragmentary plan view and sectional view another form of embodiment of this device
  • FIG. 6 is a section showing a further form of embodiment of the present invention.
  • FIG. 7 illustrates a modified form of embodiment of the structure shown in FIG. 1, wherein a flexible diaphragm is used, and
  • FIG. 8 illustrates a modified construction of the device of FIG. 6, also incorporating a flexible diaphragm.
  • a safety lock 2 is adapted to be actuated by means of a key 3
  • the rotor or barrel of this lock 2 is adapted on the one hand to rotate a cam member 4 of which the contour 5 is adapted to withdraw a bolt 6 from this steering-locking position by engaging a radial projection 7 rigid with said bolt, against-the resistance of a spring 8 normally urging said bolt to its locking position.
  • This locking system however is no part of this invention and therefore it is shown in diagrammatic form only, since any other suitable keyoperated lock, with or without an antitheft device, may be used in the practical embodiment of the present invention.
  • the lock 2 controls through a rod 9 the rotary switch 10 of which the contact pins 11 of the fixed portion are connected to the various electric circuits to be controlled (not shown), notably the circuit for controlling the delivery of energizing current to the starter motor of the engme.
  • the induction manifold of the internal-combustion engine (not shown) is connected via a pipeline 12 and a duct 13 to a chamber 14 in which a piston 15 normally urged upwards by a gauged spring 16 is slidably fitted.
  • This piston 15 comprises an integral lateral or angle stud 17 adapted to drop" into a groove 18 formed in said cam member 4.
  • the switch rotor 10 thereof can be positioned to obtain any desired control action, including the energization of the starter motor.
  • the piston 15 and chamber 14 are not directed parallel to the general center line of the device but at right angles thereto, in the fashion of a worm drive.
  • the groove 19of cam 4 has a partially toroidal configuration in this case.
  • the piston 15 comprises a cylindrical notch 20 permitting the free rotation of said cam.
  • FIG. 5 illustrates another modified form of embodiment of the device according to this invention, wherein the axis of chamber 14 and the axis of lock 2 are also at right angles to each other but in convergent relationship.
  • the piston 15 carries a finger l7 urged by spring means 16 against the inner wall of an arcuate slot 21 formed in cam 4 to permit the free movement of the contact member.
  • this arc uate slot 21 formed in cam 4 comprises an internal notch 22 limiting the angular movement of the device when the finger 17 engages this notch 22 as a consequence of the suction applied to the piston 15 as explained in the preceding cases, thus preventing the switch from being moved to the Start" position.
  • FIG. 6 illustrates another form of embodiment of the invention wherein the retaining action is exerted directly against a switch contact.
  • This piston when so withdrawn, carries along one arm of a bellcrank lever 23 which engages a notch formed to this end in piston 15 and has its other arm provided with a contact blade 24 connected to the pin 25 of rotary switch 10, i.e., the pin connected to the starter circuit.
  • the movement of piston 15 in the lock body 26 causes the bellcrank lever 23 to pivot and thus move the contact blade 24 away from the switch rotor; this movement prevents the actuation of the starter motor as long as the engine is running, according to the intended purpose.
  • the piston 15 instead of being directly responsive to the engine suction, may be operatively connected to the central portion of a disc-shaped resilient deformable diaphragm 27 enclosed in a case 28 as illustrated in FIG. 7 constituting an application of this alternate form of embodiment to the device shown in FIG. 1.
  • the diaphragm case 28 is secured on one side to the lower portion of body 1 formed with a duct 13 (FIG. 1) and on the opposite side to a pipeline 29 communicating with the engine suction.
  • the diaphragm 27 is clamped between the pair of flanges 30 of a hub rigid with a rod 31 locked at one end by a nut 32.
  • This rod 31 is adapted to slide within the duct 13 of body 1 and has its opposite end screwed in a tapped hole 33 of piston 15.
  • the diaphragm 27 distorted by the suction produced when the engine is started carries along'the piston 15 towards the case 28.
  • the diaphragm 27 resumes its initial condition shown in FIG. 7 and spring 16 moves the piston 15 back to its initial position.
  • the flexible diaphragm 27 was distorted beforehand to obtain the shape illustrated in the FIG. and has its central portion clamped by means of a nut 32 between a cup-shaped member 34 and a hub 36 rigid with the rod 31 secured to piston 15.
  • the case 35 is secured on one side to the body 26 and on the other side to a pipeline 29 connected to the source of engine suction.
  • the inherent resiliency of the diaphragm may be reinforced by the spring 16 to assist in returning the piston 15 to its initial position.
  • a safety device for preventing energization of an electric starter motor of an internal-combustion engine which is already running and providing a source of low pressure, the device comprising a body, a key-operated safety-lock member rotatably mounted in said body, switch means having a rotor adapted to close at least one electric circuit including an energizing circuit for said starter motor, said switch means being mounted in said body and connected to be rotated by said safety-lock member, a chamber in said body connected to said source of low pressure, a piston member mounted in said chamber spring means biasing said piston member in said opposite direction, and means on said piston member to prevent rotation of said rotor when said piston member is moved in said one direction thereby preventing closure of the circuit of said starter motor when the engine is running.
  • a safety device further comprising a cam integral with said safety-lock member having a groove formed therein, said means on said piston comprising a stud adapted to move parallel with the axis of rotation of said switch rotor and to drop in said groove when the piston moves in said one direction, said groove having a limiting contour against which said stud abuts to prevent said switch rotor from being rotated to a position in which the starter motor is enerized.
  • a safety device wherein said piston has its axis disposed at right angles to the axis of rotation of said switch rotor, said piston being formed with two cylindrical end portions and a notched portion therebetween, further comprising a cam integral with said safety-lock member and having therein a toroidal groove engaged by one of the ends of said piston when the latter is moved by the engine in said one direction so as to positive lock said cam against movement to a starter motor-energization position when the engine is running, said notched piston portion being aligned with the cam when the engine is not operating thereby permitting free rotation of said rotor.
  • a safety device further comprising a cam integral with said safety-lock member and having an arcuate groove therein, said piston having its axis disposed at right angles to and convergent with the axis of rotation of said switch rotor, said means on said piston comprising a finger rigid with said piston and adapted to engage said arcuate groove in said cam, an external notch in said groove so disposed that said finger engages into said notch when said engine moves said piston in said one direction and locks said cam against rotation to a position for energizing said starter motor, said finger being released from said notch when the engine stops to permit rotation of said switch rotorv 5.
  • a safety device wherein said piston has its axis parallel to the axis of rotation of said switch rotor and has a notch therein, a pivotally mounted bellcrank lever having a first arm engaged in said notch to be driven by said piston during the movement thereof, and a second pivoting arm connected with a movable contact of said switch relied to the starter motor energizing circuit, said movable contact being positively held out of contact with said switch rotor when the engine moves said piston in said one direction thereby opening the starter motor circuit.
  • a safety device further comprising a case having a chamber therein, a diaphragm mounted in said chamber, conduit means connecting said chamber to said internal-combustion engine so that said diaphragm is displaced in response to the running of said engine, and means connecting said diaphragm to said piston whereby said piston is moved in said one direction when said engine is running.
  • a safety device according to claim I, further comprising an antitheft device and means on said safety-lock member to control said antitheft device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve Device For Special Equipments (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
US6716A 1969-01-30 1970-01-29 Safety devices for starter motors of internal-combustion engines Expired - Lifetime US3622718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6901858A FR2029882A5 (enrdf_load_stackoverflow) 1969-01-30 1969-01-30

Publications (1)

Publication Number Publication Date
US3622718A true US3622718A (en) 1971-11-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US6716A Expired - Lifetime US3622718A (en) 1969-01-30 1970-01-29 Safety devices for starter motors of internal-combustion engines

Country Status (4)

Country Link
US (1) US3622718A (enrdf_load_stackoverflow)
ES (1) ES375669A1 (enrdf_load_stackoverflow)
FR (1) FR2029882A5 (enrdf_load_stackoverflow)
GB (2) GB1293743A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782493A (en) * 1970-06-19 1974-01-01 Brev Neiman Soc Exploit Anti-theft devices
US3985009A (en) * 1974-03-18 1976-10-12 Societe D'exploitation Des Brevets Neiman S.A. Compact anti-theft device for vehicles
US4566556A (en) * 1983-08-19 1986-01-28 Autoloc Corporation Anti-theft apparatus for motor vehicles
US4972692A (en) * 1988-11-10 1990-11-27 Kabushiki Kaisha Tokai Rika Denki Seisakusho Key-operated ignition device
US20050127753A1 (en) * 2002-03-22 2005-06-16 Masanari Okuno Electric steering lock device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1524983A (en) * 1982-06-03 1983-12-08 Moitie, C.R. Vehicle anti-theft device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1205010A (en) * 1914-04-27 1916-11-14 Carl E Pearson Ignition apparatus.
US1542051A (en) * 1921-07-27 1925-06-16 Charles L Gedney Circuit breaker for motor vehicles
US1991939A (en) * 1933-11-08 1935-02-19 Hubbard Spool Company Starter control
US2143104A (en) * 1936-01-08 1939-01-10 Gen Motors Corp Starter switch
US2223097A (en) * 1937-09-17 1940-11-26 Ehret Clement Safety device for motor vehicles
US2286921A (en) * 1941-05-08 1942-06-16 Ivey C Morris Starter switch for motor vehicles
USRE23340E (en) * 1951-02-13 Automatic engine-warming
DE838668C (de) * 1940-09-06 1952-05-12 Daimler Benz Ag Schalteinrichtung fuer elektrische Anlasser an Brennkraftmaschinen von Kraftfahrzeugen
DE922501C (de) * 1950-11-30 1955-01-17 Gen Motors Corp Schaltvorrichtung fuer den Anlasser von Brennkraftmaschinen fuer Kraftfahrzeuge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23340E (en) * 1951-02-13 Automatic engine-warming
US1205010A (en) * 1914-04-27 1916-11-14 Carl E Pearson Ignition apparatus.
US1542051A (en) * 1921-07-27 1925-06-16 Charles L Gedney Circuit breaker for motor vehicles
US1991939A (en) * 1933-11-08 1935-02-19 Hubbard Spool Company Starter control
US2143104A (en) * 1936-01-08 1939-01-10 Gen Motors Corp Starter switch
US2223097A (en) * 1937-09-17 1940-11-26 Ehret Clement Safety device for motor vehicles
DE838668C (de) * 1940-09-06 1952-05-12 Daimler Benz Ag Schalteinrichtung fuer elektrische Anlasser an Brennkraftmaschinen von Kraftfahrzeugen
US2286921A (en) * 1941-05-08 1942-06-16 Ivey C Morris Starter switch for motor vehicles
DE922501C (de) * 1950-11-30 1955-01-17 Gen Motors Corp Schaltvorrichtung fuer den Anlasser von Brennkraftmaschinen fuer Kraftfahrzeuge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782493A (en) * 1970-06-19 1974-01-01 Brev Neiman Soc Exploit Anti-theft devices
US3887029A (en) * 1970-06-19 1975-06-03 Des Brevets Neiman Soc D Expl Anti-theft devices
US3985009A (en) * 1974-03-18 1976-10-12 Societe D'exploitation Des Brevets Neiman S.A. Compact anti-theft device for vehicles
US4566556A (en) * 1983-08-19 1986-01-28 Autoloc Corporation Anti-theft apparatus for motor vehicles
US4972692A (en) * 1988-11-10 1990-11-27 Kabushiki Kaisha Tokai Rika Denki Seisakusho Key-operated ignition device
US20050127753A1 (en) * 2002-03-22 2005-06-16 Masanari Okuno Electric steering lock device
US7007525B2 (en) * 2002-03-22 2006-03-07 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electric steering lock device

Also Published As

Publication number Publication date
ES375669A1 (es) 1972-05-16
FR2029882A5 (enrdf_load_stackoverflow) 1970-10-23
GB1295030A (enrdf_load_stackoverflow) 1972-11-01
GB1293743A (en) 1972-10-25

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