US3840258A - Motor-vehicle door latch - Google Patents

Motor-vehicle door latch Download PDF

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Publication number
US3840258A
US3840258A US28640672A US3840258A US 3840258 A US3840258 A US 3840258A US 28640672 A US28640672 A US 28640672A US 3840258 A US3840258 A US 3840258A
Authority
US
United States
Prior art keywords
door
keeper
lock
latch
operating body
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
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English (en)
Inventor
H Brackmann
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.)
Kiekert AG
KEIKERT A SOHNE
Original Assignee
KEIKERT A SOHNE
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
Priority claimed from DE19712145059 external-priority patent/DE2145059C3/de
Application filed by KEIKERT A SOHNE filed Critical KEIKERT A SOHNE
Application granted granted Critical
Publication of US3840258A publication Critical patent/US3840258A/en
Assigned to KIEKERT GMBH & CO. KOMMANDITGESELLSCHAFT reassignment KIEKERT GMBH & CO. KOMMANDITGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: ARN, KIEKERT SOHNE
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
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E05B85/243—Bolts rotating about an axis with a bifurcated bolt
    • 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
    • E05B77/14—Specially controlled locking actions in case of open doors or in case of doors moved from an open to a closed position, e.g. lock-out prevention or self-cancelling
    • E05B77/16—Preventing locking with the bolt in the unlatched position, i.e. when the door is open
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/25—Remote 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure

Definitions

  • a motor-vehicle door latch has a pivotal keeper rota- [211 Appl' 286406 tionally coupled to an operator pivotal by either the inside or outside door handle to open the latch.
  • a Foreign Application Priority Data locking element is slidable on the latch housing to pre- Sept. 9, 1971 Germany 2145059 vent rotation of the Operamr y either door handle- The operator is formed with an arm which blocks and 52 us. (:1. 292/216, 292/DIG. 25 Prevents Sliding 9f the locking element in the p P [51] Int. Cl. E05c 3/26 Sition of the p Actuation of either door handle 58 Field'of Search 292/198, 216, DIG.
  • the present invention relates to a motor-vehicle door latch. More specifically this invention concerns such a latch which may be locked shut from the outside without the necessity of using the door-opening key.
  • a motor-vehicle door latch usually is mounted on a door edge and coacts with a bolt projecting from the doorpost.
  • a pivotal latching fork can engage over this bolt to secure the door.
  • a short rack is provided on the doorpost, with a rotatable gear on the door edge meshing with this rack to hold the door closed.
  • means is provided to prevent rotation of the latching element, be it the fork or the gear, in order to lock the door shut.
  • the latch element can be freed to allow opening of the door by means of handles on the outside and on the inside of the door.
  • means is provided to prevent actuation of these handles, or at least the outside handle, or to decouple them from the latch mechanism to prevent unauthorized opening of the door.
  • This means takes the form of a simple button or lever on the inside of the door, and a key mechanism on the outside of the door.
  • Another object is the provision of a latch which allows the car door to be simply closed while effecting a locking of this door, but which will reduce the possibility of an accidental or unintentional locking of the door.
  • a blocking element on the actuating member which is coupled to the pivotal latching element or keeper responsible for holding the door shut.
  • This blocking element abuts, only in the position of the keeper corresponding to the open position of the door, against the body which serves to lock the door in order to prevent this body from being operated except when the door handle itself is actuated or the door is closed.
  • the door is locked without use of the key by actuating either of the door handles and, while holding it actuated, operating the lock button or lever on the inside of the door. Then the door handle can be released and the door swung to, the door locking shut when it closes. Since the inside locking member must be operated to free the inner handle and allow opening of the door, and since it can only be actuated with the door open to lock the door if the outer handle is actuated, unintentional locking of the door is virtually impossible.
  • FIGS. 1 and 1A are side views of a door edge provided with a latch according to the present invention.
  • FIG. 2 is a top view of the latch and door edge shown in FIG. 1;
  • FIG. 3 is an enlarged-scale side view of the mechanism of the latch, flattened-out as shown by the dotdash lines of FIG. 2, seen from the inside of the door;
  • FIGS. 4 and 5 are views similar to FIG. 3 showing the latch mechanism in various different positions.
  • FIGS. 1 and 2 show the latch in the open position.
  • This latch comprises a housing 1 carried on the edge of a motor-vehicle door 2.
  • a bolting fork 3 has two legs 4 adapted to embrace and capture a bolt 11 projecting from a doorpost 12 when the door 2 is closed.
  • One of the legs 4 is formed with a'notch 5 in which a rotatable keeper 13 carried on a rotatable pin 6 is received as described in the commonly assigned patent application Ser. No. 220,037 filed Jan. I972 by Hans-Dieter Watermann under the title MOTOR-VEHICLE DOOR WITH LOCK MECHANISM ONLY ACTUATABLE WITH DOOR CLOSED (now US. Pat. No. 3,781,045).
  • FIG. 5 shows the mechanism of the latch as it would appear with the door closed and unlocked.
  • an operator 7 which when rotated clockwise, as seen in FIG. 5, frees the fork 3 and allows the door to be opened.
  • This rotation can be effected from inside the door by a door handle 14 (FIG. 3) connected to a pivotal actuator 8 which has an arm 8a engageable with an arm 7a of the operator 7.
  • the actuator 8 is pivoted on the housing 1 latch is operated from the outside.
  • the dot-dash line position of actuator 8 in FIG. 3 shows how this member also operates to unlatch the door.
  • a large locking element or lock 9 is vertically slidable on the housing 1 on two pins 1a fitting through corresponding slots.
  • This element 9 carries the pivot 18b for the outside door-opening lever 18 and a spring 18c which normally pulls the foot 18a out of contact with the arm 7b.
  • This element 9 can be shifted from outside the door by a key cylinder 17 or from inside the door by a locking button 19.
  • the element 9 is pushed down it displaces the lever 18 out of contact with the handle 16 so that the outer door handle is no longer connected to the latch mechanism and is therefore unable to actuate the latch.
  • the element 9 is formed with a nose 9a engageable behind another arm 8b formed on the actuator 8 to prevent pivoting of same and actuation of the latch thereby. This is shown in solid lines in FIG. 4, the dot-dash line position corresponding to the solid-line position of FIG. 5.
  • the operator or operating body 7 is formed with another arm 10 in turn formed with a cutout 100 which in the open position of the door seats against the lock element 9 and prevents it from being slid down to lock the door.
  • this arm or blocking element 10 In the closed position of the door shown in FiG. this arm or blocking element 10 is rotated slightly clockwise, since when the keeper 13 engages in the notch 5 it is not at an end position (FIG. 1A), so that the arm 10 clears the bent over portion of the element 9 best visible in FIG. 2.
  • a pin is provided on the element 9 to capture this arm 10 (by dropping into recess 10a see FIG. 3) and prevent any actuation of the operator 7.
  • the lock of the present invention thus has all of the safety features of any existing latch such as insensitivity to outside shocks and impossibility of opening the door from inside when it is locked without releasing the lock. In addition locking of the door unintentionally is practically ruled out and the key need not be used to lock it from outside.
  • a motor-vehicle door latch comprising:
  • a mechanism including a keeper for releasably securing a door edge to a doorpost, said keeper being pivotal between a closed position and an open position;
  • a door-opening member engageable with said operating body and displaceable between an actuated position shifting said keeper into said open position and an unactuated position with said keeper in said closed position;
  • a lock operatively connectable with said dooropening member and displaceable between a first position preventing actuation of said operating body by said door-opening member and a second position permitting actuation of said operating body by said door-opening member;
  • a blocking element on said operating body engageable in said open position of said keeper with said lock to prevent displacement of same into said first position from said second position.

Landscapes

  • Lock And Its Accessories (AREA)
US28640672 1971-09-09 1972-09-05 Motor-vehicle door latch Expired - Lifetime US3840258A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712145059 DE2145059C3 (de) 1971-09-09 Vorrichtung zum schlüssellosen Verriegeln eines Kraftfahrzeug-Türverschlusses mit Gabelfalle

Publications (1)

Publication Number Publication Date
US3840258A true US3840258A (en) 1974-10-08

Family

ID=5819071

Family Applications (1)

Application Number Title Priority Date Filing Date
US28640672 Expired - Lifetime US3840258A (en) 1971-09-09 1972-09-05 Motor-vehicle door latch

Country Status (4)

Country Link
US (1) US3840258A (ko)
JP (2) JPS4836824A (ko)
BR (1) BR7206169D0 (ko)
GB (1) GB1374902A (ko)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5277461A (en) * 1992-12-24 1994-01-11 General Motors Corporation Vehicle door latch
US5971449A (en) * 1998-06-29 1999-10-26 General Motor Corporation Vehicle door latch
US20020171250A1 (en) * 2001-05-15 2002-11-21 Fumio Kobayashi Door locking apparatus for vehicle
US20050099022A1 (en) * 2003-11-11 2005-05-12 Mitsui Mining & Smelting Co., Ltd. Apparatus for opening and closing door
US20050140149A1 (en) * 2003-12-25 2005-06-30 Mitsui Mining & Smelting Co., Ltd. Door lock device
US20050156435A1 (en) * 2002-06-13 2005-07-21 Dominique Baillet Lock for motor vehicle opening comprising means for inside and outside locking
JP2008025339A (ja) * 2007-09-19 2008-02-07 Mitsui Mining & Smelting Co Ltd ドアロック装置
US8091933B1 (en) * 2007-09-21 2012-01-10 Trimark Corporation Heavy duty door latch and release modules
CN104948039A (zh) * 2014-03-27 2015-09-30 信昌机械厂股份有限公司 汽车门锁的防锁定机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306550B (en) * 1995-10-20 1999-12-15 Rockwell Lvs Vehicle door latch assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5277461A (en) * 1992-12-24 1994-01-11 General Motors Corporation Vehicle door latch
US5971449A (en) * 1998-06-29 1999-10-26 General Motor Corporation Vehicle door latch
US20020171250A1 (en) * 2001-05-15 2002-11-21 Fumio Kobayashi Door locking apparatus for vehicle
US6793255B2 (en) * 2001-05-15 2004-09-21 Ohi Seisakusho Co., Ltd. Door locking apparatus for vehicle
US20050156435A1 (en) * 2002-06-13 2005-07-21 Dominique Baillet Lock for motor vehicle opening comprising means for inside and outside locking
US7311340B2 (en) * 2002-06-13 2007-12-25 Valeo Securite Habitacle Lock for motor vehicle opening comprising means for inside and outside locking
US20050099022A1 (en) * 2003-11-11 2005-05-12 Mitsui Mining & Smelting Co., Ltd. Apparatus for opening and closing door
US7438331B2 (en) * 2003-11-11 2008-10-21 Mitsui Mining & Smelting Co., Ltd. Apparatus for opening and closing door
US20050140149A1 (en) * 2003-12-25 2005-06-30 Mitsui Mining & Smelting Co., Ltd. Door lock device
US7441815B2 (en) * 2003-12-25 2008-10-28 Mitsui Mining & Smelting Co., Ltd. Door lock device
JP2008025339A (ja) * 2007-09-19 2008-02-07 Mitsui Mining & Smelting Co Ltd ドアロック装置
JP4555848B2 (ja) * 2007-09-19 2010-10-06 三井金属鉱業株式会社 ドアロック装置
US8091933B1 (en) * 2007-09-21 2012-01-10 Trimark Corporation Heavy duty door latch and release modules
CN104948039A (zh) * 2014-03-27 2015-09-30 信昌机械厂股份有限公司 汽车门锁的防锁定机构

Also Published As

Publication number Publication date
DE2145059A1 (de) 1973-03-22
DE2145059B2 (de) 1976-09-02
GB1374902A (en) 1974-11-20
JPS52110124U (ko) 1977-08-22
JPS4836824A (ko) 1973-05-31
BR7206169D0 (pt) 1973-09-25
JPS5545006Y2 (ko) 1980-10-22

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