US3773368A - Vehicle door latch with forked latching rotors - Google Patents

Vehicle door latch with forked latching rotors Download PDF

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Publication number
US3773368A
US3773368A US00195943A US3773368DA US3773368A US 3773368 A US3773368 A US 3773368A US 00195943 A US00195943 A US 00195943A US 3773368D A US3773368D A US 3773368DA US 3773368 A US3773368 A US 3773368A
Authority
US
United States
Prior art keywords
pawl
rotor
rotors
latch
positions
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
US00195943A
Other languages
English (en)
Inventor
L Atwood
R Slattery
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.)
AVM ACQUISITION Co A CORP OF
Atwood Industries Inc
Original Assignee
Atwood Vacuum Machine Co
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
Application filed by Atwood Vacuum Machine Co filed Critical Atwood Vacuum Machine Co
Application granted granted Critical
Publication of US3773368A publication Critical patent/US3773368A/en
Assigned to CITICORP INDUSTRIAL CREDIT, INC. reassignment CITICORP INDUSTRIAL CREDIT, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AVM ACQUISITION CO., 1400 EDDY AVE. ROCKFORD, ILL 61101
Assigned to AVM ACQUISITION CO., A CORP OF IL reassignment AVM ACQUISITION CO., A CORP OF IL ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ATWOOD VACUUM MACHINE COMPANY
Assigned to ATWOOD INDUSTRIES, INC. reassignment ATWOOD INDUSTRIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: ATWOOD VACUUM MACHINE COMPANY
Assigned to ATWOOD VACUUM MACHINE COMPANY, FORMERLY AVM ACQUISITION CO. reassignment ATWOOD VACUUM MACHINE COMPANY, FORMERLY AVM ACQUISITION CO. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CITICORP INDUSTRIAL CREDIT, INC.
Anticipated expiration legal-status Critical
Assigned to HARRIS TRUST AND SAVINGS BANK reassignment HARRIS TRUST AND SAVINGS BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ATWOOD INDUSTRIES INC., A CORP. OF IL
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
    • E05B85/247—Bolts rotating about an axis about a vertical axis
    • 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
    • Y10T292/0801—Multiple
    • Y10T292/0848—Swinging
    • Y10T292/0849—Operating means
    • Y10T292/0853—Link and lever
    • 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

  • ABSTRACT A pawl includes a detent which hooks against one leg of a lower forked latching rotor to hold the rotor in a secondary latched position and hooks against the other leg of the rotor to hold the rotor in a fully latched position.
  • a second detent on the pawl blocks against an upper latching rotor to hold the latter in its fully and secondary latched positions.
  • This invention relates to a latch for vehicle doors and, more particularly, to a relatively high strength latch with a forked latching rotor having a leg whose free end is normally engaged by a pawl to-hold the rotor in a fully latched position and to prevent the rotor from turning to an unlatched position.
  • the invention has even more specific reference to a latch which includes a pair of forked latching rotors adapted to mutually embrace a striker to hold the vehicle door in a tightly closed condition.
  • FIG. 1 is a fragmentary cross-section taken horizontally. through the door of a vehicle equipped with a new and improved latch embodying the novel features of the present invention.
  • FIG. 2 is a fragmentary cross-section taken substantially. along the line 2-2 of FIG. I.
  • FIGS. 3 and 4 are elevational views of the latch as seen in the direction of the arrows 3-3 and 4-4, re spectively, of FIG. I.
  • FIG. 5 is a cross-section taken substantially along the line 5-5'of FIG. 1 and showing the rotors in their fully latched positions
  • FIGS. 6-and 7 are views similar to FIG. 5 but showing the rotors in their secondary latched and unlatched 'positions, respectively.
  • FIG. 8 is a fragmentarycross-section taken substantially along the line 8-8'of FIG. 5;
  • FIG. 9 is a perspective view-of the pawl.
  • each rotor is a fork-like element which is formed with a striker-receiving recess or throat 17 (FIG.
  • the latching rotors I3 and 14 are mounted on a support formed by a plastic case 21 adapted to be fastened to the outside of the end panel 23 of the door 11 by bolts 24, the rear face of the case being covered by a plate 25 which is fastened to the case by the bolts.
  • the rotor ,13 is joumaled to turn about a horizontal pin 26 (FIGS. 2 and 5) supported by the case while the rotor 14 is disposed in overlapping side-by-side relation with the rotor 13 and is joumaled to turn about a similar pin 27 located directly above the pin 26.
  • the two pins are located on opposite sides of an elongated recess 29 (FIG. 5 which is formed in the case and the plate to accommodate the striker 15 when the door is swung closed.
  • a pawl 33 which is pivoted to turn about a pin 34 supported by the case 21, the pin 34 paralleling the upper rotor pin 27 and being located just above and just outwardly of the latter pin.
  • an elongated finger 35 (FIGS. 1 and 9) which projects through the case and through an opening in the end panel 23 of the door so as to extend into the interior of the door.
  • Tripping of the pawl 33 to unlatch the door 11 from the outside thereof is effected by a contactor 37 (FIG. 4) which is pivoted on a flange 39 at 40.
  • the flange lies along the inside of the end panel 23 and is fastened to the latter by the same bolts 24 used to hold the case 21 on the door.
  • the contactor is formed with a slot 41 (FIG. 4) which receives the finger 35 of the pawl 33 and, when the contactoris swung counterclockwise by plastic case 21 and held by a tab 45 on the upper edge tion shown in FIG.
  • a lug 51 on the upper end of the locking lever overlies and engages the upper edge of the contactor 37 to prevent the latter from being swung counterclockwise and tripping the pawl 33.
  • swinging of the locking lever between its locked and unlocked positions may be effected from the inside of the door by a garnish button-actuated lever 53 (FIG. 3) connected to the locking lever and pivoted on the flange 49 at 54 or from the outside of the door by a key-actuated lever 55 (FIG. 4) pivoted on the flange 39 at 56 and connected to the lever 53.
  • the locking lever 46 also may be swung to its unlocked position by clockwise (FIG.
  • the inner end portion of the pawl is formed with a downwardly projecting hook or detent 66.
  • the detent 66 hooks against a shoulder 67 which is formed on the inner edge of the inner leg 19 of the lower rotor at the free end of such leg.
  • the detent 66 hooking the shoulder 67, the lower rotor is held in its fully latched position and is prevented from turning toward its unlatched position.
  • the same pawl 33 which hooks the inner leg 19 of the lower rotor 13 to hold the latter in its fully latched position also engages the outer leg of the rotor to hold the rotor in its secondary latched position.
  • the outer leg 20 of the rotor first engages the detent 66 on the pawl'33 and cams the latter in a clockwise direction about the pin 34.
  • the spring 44 swings the pawl reversely to cause the detent to movedownwardly alongside'the inner edge of the leg (see FIG. 6). If the door is closed no further, the detent66 engages the inner edge of the leg 20 near the free end thereof and holds the rotor 13 in the secondary latched position shown in FIG. 6 so as to prevent the rotor from turning counterclockwise toward the unlatched position.
  • the present invention alsocon'terripla tessimplifying the latch further by providing an'additional detent on the same pawl 33 in order to hold the upper'latching rotor 14 securely in its fully and secondary latched' positions.
  • the additional detent 70 simply comprises a small button-like member located near the outer end portion of the main pawl 33 and fitted over the pin 34.
  • a short finger 71 (FIG. 5) protruding from the detent 70 projects snugly into a hole 73 (FIG. 9) in the pawl 33 so as to turn in unison with the latter.
  • the detent 70 is offset from the detent 66 and is disposed in the same vertical plane as the upper rotor 14.
  • a lug 74 formed integrally with the inner end of the detent 70 blocks against a shoulder 75 on the upper edge of the upper rotor and prevents movement of the rotor toward its unlatched position if an opening force is applied to the door 11.
  • the lug 74 blocks against a shoulder 76 as shown in FIG. 5 to prevent tu rning of the rotor from such position, the shoulder 76 being formed on the rotor and being spaced angularly from the shoulder 75.
  • the spring 45 which urges the pawl 33 counterclockwise is used also to bias the rotors l3 and 14 toward their unlatched positions thereby to eliminate the need of employing separate springs for biasing the rotors.
  • the striker 15 causes the rotors to turn slightly toward their unlatched positions as the door 11 is initially opened. If the pawl thereafter is immediately allowed to return to its lowered position, a cam surface 77 on the lower edge of the pawl adjacent the detent 66 engages the upper edge of the inner leg 19 of the lower rotor 13.
  • the spring 45 acting on the pawl causes the surface 77 to bear against the upper edge of the leg 19 to cam the lower rotor to its secondary latched position shown in FIG. 6.
  • the lower edge of the lug 74 bears against the upper edge of the shoulder 76 to bias and cam the upper rotor 14 to its secondary latched position.
  • the cam surface 77 upon subsequent lowering of the pawl, engages the upper edge of the outer leg 20 of the lower rotor 13 and cams the latter to its unlatched position, the spring 45 urging the lower rotor toward the unlatched position and serving to yieldably hold the rotor in that position as shown in FIG. 7.
  • the lower edge of the lug 74 engages the extreme upper edge of the upper rotor 14 (see FIG.
  • the return spring 45 for the pawl 33 helps turn both rotors toward and holds the rotors in their unlatched positions so that additional springs for biasing the rotors are not required.
  • the present invention brings to the art a new and improved high strength, dual rotor latch 10 in which a single pawl 33 is effective to hold both rotors l3 and 14 against movement toward their unlatched positions when the door 11 is closed.
  • the single spring 45 serves to bias not only the pawl but also the two rotors and assists in turning the rotors toward their unlatched positions.
  • the latch thus is of simplified construction when compared with prior latches of the same general type.
  • a latch adapted to move in an inward directioninto engagement with a striker to hold closed a vehicle door having inner and outer sides, said latch comprising a support, upper and lower latching rotors mounted on said support to turn about vertically spaced axes from unlatched positions to fully latched positions, each of said rotors having inner and outer legs defining a throat for receiving said striker, the outer legs of said rotors engaging said striker and causing said rotors to turn from said unlatched positions to said fully latched positions when said latch is moved in said inward direction, the inner and outer legs of each rotor being located on the inner and outer sides, respectively, of said striker when the rotor is in its fully latched position, a pawl pivotally mounted on said support, a first detent located on and movable with said pawl and engageable with the free end of the inner leg of said lower rotor to hold the latter in its fully latched position, and a second detent on said pawl
  • a latch as defined in claim 1 in which said rotors are offset axially from one another and lie in first and second side-by-side planes, said first and second detents also being offset from one another and lying in said first and second planes, respectively.
  • a latch as defined in claim 2 in which said first detent comprises a hook on the inner end portion of said pawl and positioned to engage the inner edge of the inner leg of said lower rotor when the latter is in its fully latched position, said second detent comprising a lug positioned outwardly of said first detent and positioned to block against a shoulder on said upper rotor when the latter is in its fully latched position.
  • a latch as defined in claim 3 in which said hook is .formed integrally with said pawl, said lug being formed separately of said pawl but being anchored rigidly to the pawl to turn in unison with the latter.
  • a latch as defined in claim 3 in which said rotors turn through secondary latched positions in turning from said unlatched positions to said fully latched positions, said hook being engageable with the inner edge of the outer leg of said lower rotor to hold the latter in its secondary latched position, and said lug being engageable with a second shoulder on said upper rotor to hold the latter in its secondary latched position.
  • a latch as defined in claim 1 further including a single spring for biasing said pawl into engagement with said rotors, said spring acting through said pawl to bias said rotors toward said unlatched positions as the rotors are moved from their fully latched positions.

Landscapes

  • Lock And Its Accessories (AREA)
US00195943A 1971-11-05 1971-11-05 Vehicle door latch with forked latching rotors Expired - Lifetime US3773368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19594371A 1971-11-05 1971-11-05

Publications (1)

Publication Number Publication Date
US3773368A true US3773368A (en) 1973-11-20

Family

ID=22723473

Family Applications (1)

Application Number Title Priority Date Filing Date
US00195943A Expired - Lifetime US3773368A (en) 1971-11-05 1971-11-05 Vehicle door latch with forked latching rotors

Country Status (7)

Country Link
US (1) US3773368A (enrdf_load_stackoverflow)
JP (1) JPS4857326A (enrdf_load_stackoverflow)
CA (1) CA954555A (enrdf_load_stackoverflow)
DE (2) DE2214231A1 (enrdf_load_stackoverflow)
FR (1) FR2131770A5 (enrdf_load_stackoverflow)
GB (1) GB1327568A (enrdf_load_stackoverflow)
IT (1) IT965857B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858916A (en) * 1972-12-13 1975-01-07 Aisin Seiki Door lock device
US4765682A (en) * 1986-07-31 1988-08-23 Mitsui Kinzoku Kogyo Kabushiki Kaisha Lock units
GB2207455A (en) * 1987-07-29 1989-02-01 Kiekert Gmbh Co Kg Motor vehicle door lock
US5071178A (en) * 1989-08-19 1991-12-10 Kiekert Gmbh & Co. Kommanditgesellschaft Motor-vehicle door latch
US7140649B1 (en) 2004-09-30 2006-11-28 Tuffy Security Products Rotary latch and lock mechanism
US20110031765A1 (en) * 2009-08-06 2011-02-10 Vazquez Francisco Javier Hold open lever integrated to latch housing
US20120291358A1 (en) * 2011-05-17 2012-11-22 Gm Global Technology Operations Llc. Latch assembly for a vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522721B4 (de) * 1994-07-01 2004-07-15 Volkswagen Ag Drehfallenschloß
DE202006003710U1 (de) * 2006-03-07 2007-07-19 BROSE SCHLIEßSYSTEME GMBH & CO. KG Kraftfahrzeugschloss

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700293A (en) * 1950-03-27 1955-01-25 Chicago Forging & Mfg Co Lock for the closures of automobile rear compartments and the like
US2863200A (en) * 1954-09-14 1958-12-09 Miller Joshua Latch ejection type, quick attachment and release
US3232656A (en) * 1961-05-19 1966-02-01 Gen Motors Corp Door latches for automobile doors
US3285645A (en) * 1964-08-14 1966-11-15 John H Roethel Door lock
US3334935A (en) * 1965-07-02 1967-08-08 Chrysler Corp Door latch
US3432198A (en) * 1967-06-27 1969-03-11 Ford Motor Co Latch mechanism
US3561807A (en) * 1968-10-22 1971-02-09 Atwood Vacuum Machine Co Free-wheeling latch for vehicle doors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700293A (en) * 1950-03-27 1955-01-25 Chicago Forging & Mfg Co Lock for the closures of automobile rear compartments and the like
US2863200A (en) * 1954-09-14 1958-12-09 Miller Joshua Latch ejection type, quick attachment and release
US3232656A (en) * 1961-05-19 1966-02-01 Gen Motors Corp Door latches for automobile doors
US3285645A (en) * 1964-08-14 1966-11-15 John H Roethel Door lock
US3334935A (en) * 1965-07-02 1967-08-08 Chrysler Corp Door latch
US3432198A (en) * 1967-06-27 1969-03-11 Ford Motor Co Latch mechanism
US3561807A (en) * 1968-10-22 1971-02-09 Atwood Vacuum Machine Co Free-wheeling latch for vehicle doors

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858916A (en) * 1972-12-13 1975-01-07 Aisin Seiki Door lock device
US4765682A (en) * 1986-07-31 1988-08-23 Mitsui Kinzoku Kogyo Kabushiki Kaisha Lock units
GB2207455A (en) * 1987-07-29 1989-02-01 Kiekert Gmbh Co Kg Motor vehicle door lock
GB2207455B (en) * 1987-07-29 1991-01-09 Kiekert Gmbh Co Kg Motor vehicle door lock
US5071178A (en) * 1989-08-19 1991-12-10 Kiekert Gmbh & Co. Kommanditgesellschaft Motor-vehicle door latch
US7140649B1 (en) 2004-09-30 2006-11-28 Tuffy Security Products Rotary latch and lock mechanism
US20110031765A1 (en) * 2009-08-06 2011-02-10 Vazquez Francisco Javier Hold open lever integrated to latch housing
US8348310B2 (en) * 2009-08-06 2013-01-08 Inteva Products, Llc Hold open lever integrated to latch housing
US20120291358A1 (en) * 2011-05-17 2012-11-22 Gm Global Technology Operations Llc. Latch assembly for a vehicle
US8657349B2 (en) * 2011-05-17 2014-02-25 GM Global Technology Operations LLC Latch assembly for a vehicle

Also Published As

Publication number Publication date
DE7211206U (de) 1972-07-27
DE2214231A1 (de) 1973-05-10
GB1327568A (en) 1973-08-22
JPS4857326A (enrdf_load_stackoverflow) 1973-08-11
IT965857B (it) 1974-02-11
CA954555A (en) 1974-09-10
FR2131770A5 (enrdf_load_stackoverflow) 1972-11-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CITICORP INDUSTRIAL CREDIT, INC., 200 SOUTH WACKER

Free format text: SECURITY INTEREST;ASSIGNOR:AVM ACQUISITION CO., 1400 EDDY AVE. ROCKFORD, ILL 61101;REEL/FRAME:004379/0268

Effective date: 19850225

AS Assignment

Owner name: AVM ACQUISITION CO., A CORP OF IL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ATWOOD VACUUM MACHINE COMPANY;REEL/FRAME:004371/0147

Effective date: 19850223

AS Assignment

Owner name: ATWOOD INDUSTRIES, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:ATWOOD VACUUM MACHINE COMPANY;REEL/FRAME:004672/0760

Effective date: 19861106

AS Assignment

Owner name: ATWOOD VACUUM MACHINE COMPANY, FORMERLY AVM ACQUIS

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004682/0985

Effective date: 19870224

AS Assignment

Owner name: HARRIS TRUST AND SAVINGS BANK, ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:ATWOOD INDUSTRIES INC., A CORP. OF IL;REEL/FRAME:005736/0028

Effective date: 19900629