US3747379A - Electromagnetic safety latch systems - Google Patents

Electromagnetic safety latch systems Download PDF

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Publication number
US3747379A
US3747379A US00021384A US3747379DA US3747379A US 3747379 A US3747379 A US 3747379A US 00021384 A US00021384 A US 00021384A US 3747379D A US3747379D A US 3747379DA US 3747379 A US3747379 A US 3747379A
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US
United States
Prior art keywords
latching
contactor
coils
terminal
pair
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
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US00021384A
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English (en)
Inventor
A Cabanes
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.)
PEUGEOT and RENAULT
RENAULT AND PEUGEOUT FR
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PEUGEOT and RENAULT
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Publication date
Application filed by PEUGEOT and RENAULT filed Critical PEUGEOT and RENAULT
Application granted granted Critical
Publication of US3747379A publication Critical patent/US3747379A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/46—Locking several wings simultaneously
    • E05B77/48—Locking several wings simultaneously by electrical means
    • 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
    • Y10T70/60—Systems
    • Y10T70/625—Operation and control
    • Y10T70/65—Central control
    • 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
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y10T70/7113—Projected and retracted electrically

Definitions

  • ABSTRACT A system for electromagnetically latching all the door locks of a motor vehicle by means of a latch member connected to a permanent magnet guided between a pair of tandem coils adapted to be selectively con- Foreign Application Priority Data M 24 1969 France 6908576 nected to a source of dlrect current for exertmg opposed repulsions on said magnet, at least one of said latch members being adapted to be actuated from the [52] U.S. Cl. 70/264, 70/2802,020(;(1)/563l:(, outside of the vehicle by means of a lock key. 51 1m.
  • The1at9hing and release coils are f t in Parallel, [58] Field of Search /264, 280; respectlvely, one termmal of each @011 bemg connected 2 2/14 201; /103, 104, 111, 112, 113; to one terminal of said do source and the other coil 200/153 K, 6 R, 11 R, 11 A terminal is connected to the other source terminal through at least one selection contactor having 5 References Cited normally open or front contacts, this contactor being UNITED STATES PATENTS responsive on the one hand to the lock key through the corresponding latch member and on the other hand to 122;: a handle actuatable from the interior of the vehicle.
  • SHEET 2' 0F 2 ELECTROMAGNETIC SAFETY LATCH SYSTEMS This invention relates to electromagnetic safety latch systems and has specific reference to a system of this character applicable to the doors of motor vehicles in order to provide a safety feature in case of crash or shock for the simultaneous locking or releasing of the doors of a vehicle.
  • Safety latch systems are already known, notably in the automotive industry, which comprise electromagnets incorporated in the door control lock for actuating the catch or bolt member of this lock.
  • electromagnets incorporated in the door control lock for actuating the catch or bolt member of this lock.
  • these systems are objectionable for the following reasons the stroke of the movable cores of the electromagnets can only be relatively short, thus requiring a particular lock construction and an accurate manufacture thereof as a consequence, the electromagnet system must compulsorily be incorporated in the lock mechanism, but this increases the volume of the lock and in most instances the latter cannot be built in the door of a modern vehicle.
  • This invention is applicable to a system for electromagnetically latching or releasing all the door locks of a motor vehicle of which each door is equipped with a pivoting latch member for latching the door opening control device.
  • This latch member is connected to a permanent magnet guided between a latching coil and a release coil, these coils being of the tubular-core type, coaxial and adapted to be selectively connected to a source of direct current in such a manner that they apply opposed repulsions to said magnet.
  • At least one of said latch members is adapted to be actuated from outside by means of a lock key.
  • This invention is characterized in that the coils for latching and releasing the doors respectively are mounted in parallel, one end of each coil being connected to one terminal to the dc. source and the other end according as it belongs to a latching coil or to a re lease coil, is connected to one or the other of a pair of selection terminals of at least one three-pole transitoryaction selection contactor having normally open or front contacts, the intermediate terminal of this contactor being connected to the other terminal of said source of direct current, said contactor being controlled on the one hand by said lock key through the corresponding latch member and on the other hand by a control member actuatable from the interior of the vehicle.
  • the contactor and/or the control device consisting of the pair of tandem coils and the magnet may be constructed in the form of a compact unit adapted to be separated from the lock proper and adaptable to a great number of lock mechanisms of existing vehicles.
  • the stroke of the ferrite magnet, as well as its diameter and the diameter of the coils, are substantially identical.
  • the latching or release position of the latch member is maintained by magnetic attraction between the ferrite magnet or permanent magnet and the core or one or the other of said coils.
  • the latching and release coil unit is operatively connected to at least two central control devices consisting of a same contactor incorporated in the lock of one and/or the other front doors of the vehicle. This contactor is controlled on the one hand by one of the parts actuated by means of the lock key from the exterior of the door,
  • This contactor has three positions a mechanically stable open position wherein all the coils are de-energized two closed positions in which the door latching coil and the door release coil are energized, respectively these two positions can only be maintained by a voluntary action from the user.
  • an inertia contactor of a type already known per se is inserted in the electric circuit so as to energize all the release coils in case the vehicle were subjected to a strong shock or crash.
  • the rear doors of the vehicle are provided with visual indicators for signalling the locked or unlocked door condition, which are controlled by the latch member of the corresponding door, the manual actuation of these indicators causing the release of the corresponding door and being possible only by an unusual maneuver which cannot be accomplished by a child.
  • FIG. 1 is a wiring diagram of the control circuit of the safety door latching and release coils of a four-door vehicle
  • FIG. 2 is a diagrammatic axial section showing a pair of coils and an intermediate magnet, to illustrate the relative disposal of the various component elements and of the input terminals
  • FIG. 3 is a view showing any type of door lock equipped with a latch system and a lock contactor
  • FIG. 4 is a vertical section taken through a front door of vehicle to illustrate the relative positions of the control member comprising the contactor coils and the two means provided for controlling this contactor
  • FIG. 5 is a detail view showing the contactor in its inoperative position, the cover thereof being removed
  • FIG. 6 is a vertical section taken through this contactor to show the manual control accessible from inside the passengers compartment of the vehicle, and
  • FIG. 7 is a diagrammatic view showing the momentary actuation of this contactor by the release latch member.
  • the electromagnetic member controlling the locking latch comprises a pair of tandem coils l, 2 i.e. having their tubular cores 3, 4 aligned and mounted on a non-magnetic support 5.
  • a permanent magnet 7 consisting of an axially magnetized ferrite disk is movable between the coils l, 2 and secured to a rod 6 of non-magnetic material adapted to slide in said cores 3 and 4.
  • Each coil consists of a winding comprising from 1,000 to 2,000 turns; The length and diameter of the coils as well as the magnet diameter are substantially equal.
  • the coils are interconnected through wire outlets 8 and 9 adapted to be grounded at 10, the other outlets 11 and 12 being connected to contact studs 13 and 14, respectively.
  • the ferrite magnet 7 When one of the coils, say coil 2 for instance, is energized, the ferrite magnet 7 is electromagnetically repelled and caused to abute against the iron core 3 of 40 the other, de-energized coil 1. Since the stroke of the ferrite magnet has the same order of magnitude as its diameter and the coil diameter, the repulsion force remains practically constant.
  • the rod 6 controls through a low-inertia link 15 the lock latching member 16.
  • the latching member 16 illustrated in FIGS. 3 and 4 is that, or one of those, which is or are also adapted to be actuated from the exterior by means of the lock key 18 provided for turning the cylinder 19 adapted, during its rotation, to drive a shaft 20 rigid with a small arm 21 carrying at its outer end a stud 22 engaging an arcuate slot 23 formed in said latch member 16.
  • the latter is adapted to lock, or prevent the operation of, the door lock control device, as follows
  • a lever 24 actuated by means of the push-button 25 is so connected to a lock bolt (not shown) that when it pivots in the direction of the arrow (FIG. 4) the door is unlocked and opened.
  • This lever 24 is normally urged by a spring 26 to its locking position.
  • This lever 24 may also be actuated by means of another lever 27 connected to a control member disposed within the vehicle but not shown, the pivotal movement of this other lever 27 in the direction of the arrow (FIG. 3) being also attended by the unlocking and opening of the door through the action of the upper arm of this second lever upon that of the first lever 24.
  • the lower arm of second lever 27 comprises a stud 28 so adapted to co-act with an abutment 29 carried by latch member 16 that the latter is firstly moved out from the path of lever 24, the upper arm of lever 27 subsequently moving the first lever 24 to the door unlocking and opening position.
  • the latch member 16 carries a projection 30 and in the path of movement of this projection is another projection 31 carried by the end of a lever arm 32 controlling the operation of a transitoryaction three-pole selector contactor 33 having front contacts 37-40.
  • the movable member of this contactor comprises a pivoting control shaft 34 of plastics material rotatably mounted in a case 35 also of plastic material, the portion of this shaft 34 which projects from the case 35 carrying the lever arm 32 formed with said projection 31.
  • a spring 36 constantly urges the arm 32 to its intermediate inoperative position.
  • the shaft 34 also carries a V-shaped movable contact member 37, the contact studs proper being carried by the outer ends of the arms of this contact member, as shown. In the inoperative position the studs of contact member 37 are interposed between a fixed central stud and a pair of fixed selection studs, without contacting them the latter are connected to the central terminal 38 and to the pair of selection terminals 38 and 40, respectively, of contactor 33.
  • a control member consisting of a handle 41 rigid with shaft 34 is accessible from the interior of the vehicle.
  • the wiring diaphragm of FIG. 1 shows that the set of latching coils 1 and release coils 2 are connected in parallel, respectively. One end of these coils is grounded at 10, and the other end is connected to the positive terminal of the battery 43 via contact 39 (or when the three-pole selection contactor is tilted to position 45 (or 46), FIG. 7.
  • the negative terminal of the battery is connected to conductors 8 and 9 of said coils via the ground mass of the vehicle.
  • the electric circuit further comprises an inertia switch 44 which, when closed, is adapted to energize all the release coils 2.
  • This switch 44 is'tilted automatically to its closing position when a strong shock is applied to the vehicle, for instance in case of crash, while shortcircuiting the intermediate terminal 38 and selection terminals 39 of contactors 33.
  • the two positions (latched or released) of the system are maintained by magnetic attraction between the ferrite disk 7 and one of the magnetic cores 3 and 4.
  • each contactor 33 can be actuated through anyone of the following two means
  • the latching member 16 is tilted to its locking (or release) position.
  • the stud or like projection 30 of this member 16 carries along the stud 31 of shaft 34 of contactor 33, thus tilting the lever 32 to position 45 (or 46) and closing the latching circuit (or the release circuit).
  • the stud 31 of lever 32 of contactor 33 clears the stud 30 of latch member 16 and the contactor spring 36 restores the shaft 34 to its inoperative position in which no coil is energized.
  • Apparatus for electormagnetically latching and releasing automobile door locks connected to a source of direct current comprising:
  • each contactor further comprising: a pivoting control shaft, spring means connected to said control shaft and normally urging said shaft to an inoperative position wherein said coils are de-energized, a lever having one arm fixed to said shaft, a first projection disposed on said one arm, and a pair

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US00021384A 1969-03-24 1970-03-20 Electromagnetic safety latch systems Expired - Lifetime US3747379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6908576A FR2036534A5 (de) 1969-03-24 1969-03-24

Publications (1)

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US3747379A true US3747379A (en) 1973-07-24

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Application Number Title Priority Date Filing Date
US00021384A Expired - Lifetime US3747379A (en) 1969-03-24 1970-03-20 Electromagnetic safety latch systems

Country Status (4)

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US (1) US3747379A (de)
DE (1) DE2013574C3 (de)
FR (1) FR2036534A5 (de)
GB (1) GB1250588A (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698560A (en) * 1984-11-24 1987-10-06 Swf Auto-Electric Gmbh Adjusting device, especially for locking and unlocking motor vehicle doors
US4805427A (en) * 1986-05-02 1989-02-21 Delco Products Overseas Corporation Centralized door locking system
US4848114A (en) * 1988-02-22 1989-07-18 Rippe Mary R Locking system for the doors of automotive vehicles
US4858452A (en) * 1986-12-22 1989-08-22 United Technologies Electro Systems, Inc. Non-commutated linear motor
US5030949A (en) * 1988-09-08 1991-07-09 Daimler-Benz Aktiengesellschaft Process and apparatus for influencing a central locking system in a motor vehicle to effect separate release of a closure or the central locking systems
US5224364A (en) * 1990-03-20 1993-07-06 Mercedes-Benz Ag Device for sensing rotary angles of a lock cylinder in a key-actuated lock system
US5497641A (en) * 1992-08-25 1996-03-12 Bayerische Motoren Werke Ag Door lock for motor vehicles
US5535607A (en) * 1994-06-08 1996-07-16 General Motors Corporation Door latch with integral switch
EP0894920A1 (de) * 1997-07-31 1999-02-03 ATOMA ROLTRA S.p.A. Kraftfahrzeugtürschloss
US5868017A (en) * 1996-01-05 1999-02-09 Mercedes-Benz Ag Locking device for vehicles, particularly for vehicle doors
US6412584B1 (en) 1999-12-09 2002-07-02 Trw Vehicle Safety Systems Inc. Vehicle door opener
US20040084859A1 (en) * 2001-03-12 2004-05-06 Wolf-Michael Petzold Mobile viscous matter pump comprising a support construction and a pneumatic air-cushioned wheel axle
US6791442B1 (en) 2003-11-21 2004-09-14 Trombetta, Llc Magnetic latching solenoid
US20110219829A1 (en) * 2010-03-12 2011-09-15 Christopher Trunek Linkage Lock
US9368266B2 (en) 2014-07-18 2016-06-14 Trumpet Holdings, Inc. Electric solenoid structure having elastomeric biasing member
CN115039152A (zh) * 2020-01-28 2022-09-09 大陆汽车科技有限公司 用于容纳部件的装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1517721A (en) * 1975-06-26 1978-07-12 Wilmot Breeden Ltd Vehicle door locking or fastening systems
DE2613681B2 (de) * 1976-03-31 1980-10-16 Arn. Kiekert Soehne, 5628 Heiligenhaus Elektrische Zentralverriegelungseinrichtung für Kraftfahrzeugtüren
JPS62101782A (ja) * 1985-10-30 1987-05-12 株式会社　大井製作所 自動車用ドアロツク制御装置
DE3703590C1 (en) * 1987-02-06 1988-07-14 Audi Ag Circuit arrangement for activating a central locking system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1855612A (en) * 1928-11-17 1932-04-26 Thomas R Brooks Electrical switch
US2139183A (en) * 1937-12-16 1938-12-06 Clarence H Bruns Electric door lock for automobiles
US2371370A (en) * 1942-09-25 1945-03-13 Ternstedt Mfg Co Electrical coincidental locking system for automobiles
US2479462A (en) * 1947-10-31 1949-08-16 Arrow Hart & Hegeman Electric Multiposition switch
US2877639A (en) * 1957-05-28 1959-03-17 Alex A Gust Automobile door locking and unlocking means
US3486352A (en) * 1968-05-17 1969-12-30 Renault Automotive electric door lock systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1855612A (en) * 1928-11-17 1932-04-26 Thomas R Brooks Electrical switch
US2139183A (en) * 1937-12-16 1938-12-06 Clarence H Bruns Electric door lock for automobiles
US2371370A (en) * 1942-09-25 1945-03-13 Ternstedt Mfg Co Electrical coincidental locking system for automobiles
US2479462A (en) * 1947-10-31 1949-08-16 Arrow Hart & Hegeman Electric Multiposition switch
US2877639A (en) * 1957-05-28 1959-03-17 Alex A Gust Automobile door locking and unlocking means
US3486352A (en) * 1968-05-17 1969-12-30 Renault Automotive electric door lock systems

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698560A (en) * 1984-11-24 1987-10-06 Swf Auto-Electric Gmbh Adjusting device, especially for locking and unlocking motor vehicle doors
US4805427A (en) * 1986-05-02 1989-02-21 Delco Products Overseas Corporation Centralized door locking system
US4858452A (en) * 1986-12-22 1989-08-22 United Technologies Electro Systems, Inc. Non-commutated linear motor
US4848114A (en) * 1988-02-22 1989-07-18 Rippe Mary R Locking system for the doors of automotive vehicles
US5030949A (en) * 1988-09-08 1991-07-09 Daimler-Benz Aktiengesellschaft Process and apparatus for influencing a central locking system in a motor vehicle to effect separate release of a closure or the central locking systems
US5224364A (en) * 1990-03-20 1993-07-06 Mercedes-Benz Ag Device for sensing rotary angles of a lock cylinder in a key-actuated lock system
US5497641A (en) * 1992-08-25 1996-03-12 Bayerische Motoren Werke Ag Door lock for motor vehicles
US5535607A (en) * 1994-06-08 1996-07-16 General Motors Corporation Door latch with integral switch
US5868017A (en) * 1996-01-05 1999-02-09 Mercedes-Benz Ag Locking device for vehicles, particularly for vehicle doors
EP0894920A1 (de) * 1997-07-31 1999-02-03 ATOMA ROLTRA S.p.A. Kraftfahrzeugtürschloss
US6412584B1 (en) 1999-12-09 2002-07-02 Trw Vehicle Safety Systems Inc. Vehicle door opener
US20040084859A1 (en) * 2001-03-12 2004-05-06 Wolf-Michael Petzold Mobile viscous matter pump comprising a support construction and a pneumatic air-cushioned wheel axle
US7195258B2 (en) * 2001-03-12 2007-03-27 Putzmeister Aktiengesellschaft Mobile thick matter pump comprising a support construction and a pneumatic air-cushioned wheel axle
US6791442B1 (en) 2003-11-21 2004-09-14 Trombetta, Llc Magnetic latching solenoid
US20110219829A1 (en) * 2010-03-12 2011-09-15 Christopher Trunek Linkage Lock
US8555682B2 (en) 2010-03-12 2013-10-15 Christopher Trunek Linkage lock
US9368266B2 (en) 2014-07-18 2016-06-14 Trumpet Holdings, Inc. Electric solenoid structure having elastomeric biasing member
CN115039152A (zh) * 2020-01-28 2022-09-09 大陆汽车科技有限公司 用于容纳部件的装置

Also Published As

Publication number Publication date
FR2036534A5 (de) 1970-12-24
DE2013574A1 (de) 1970-12-10
DE2013574B2 (de) 1978-02-23
DE2013574C3 (de) 1978-10-19
GB1250588A (de) 1971-10-20

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