US3905624A - Hood latching device for automotive vehicles - Google Patents

Hood latching device for automotive vehicles Download PDF

Info

Publication number
US3905624A
US3905624A US52286774A US3905624A US 3905624 A US3905624 A US 3905624A US 52286774 A US52286774 A US 52286774A US 3905624 A US3905624 A US 3905624A
Authority
US
United States
Prior art keywords
latch member
engaging portion
hood
pawl
striker
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
Other languages
English (en)
Inventor
Masatoshi Fujita
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Application granted granted Critical
Publication of US3905624A publication Critical patent/US3905624A/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
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
    • E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
    • 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
    • Y10S292/14—Hood latches
    • 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
    • Y10T292/081—Swinging and hooked end
    • 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 first latch member, a second latch member, and a pawl member are pivotally mounted on a base plate.
  • the first latching member is provided with a first engaging portion engageable with a striker secured to a hood and with a tooth portion.
  • the second latch member is provided with a hook portion also engageable with the striker
  • the pawl member is provided with a second engaging portion engageable with the tooth portion of the first latch member for assuring latching engagement between the striker and the first latch member, catch means for displacing the second latch member to a position for engagement with the striker, and cam surface means contacting the tooth portion at an early part of the opening operation thereby to hold the hook portion of the second latch member in en gagement with the striker, the second latch member being held by a catch portion of the first member in the position in which the hook portion of the second latch member is in engagement with the striker, at the end of the opening operation.
  • This invention relates to a hood latching device for automotive vehicles.
  • most of the conventional hood latching devices comprise a first latch mechanism of generally fork type, and a second latching mechanism of gener ally hook type comprising a hooked latch member urged by a spring toward the closing position, thereby preventing accidental opening of the hood of an auto motive vehicle even in eases where the first latching mechanism is released by, for instance, a shock caused by a rough road surface or a vibration generated in the vehicle body.
  • a primary object of the present invention is to provide, in a hood latching device comprising a first latch mechanism and a second latch member having a hooked member. an improvement whereby the above described drawback of the conventional latching device is substantially eliminated.
  • Another object of the invention is to provide an improved hood latching device wherein the operation of the second latching mechanism does not rely upon spring action.
  • Still another object of the invention is to provide an improved hood latching device wherein the releasing movement of the hooked member of the second latching mechanism is prevented by a member cooperating with the first latching mechanism, and the possibility of accidental release of the second latch mechanism is thereby substantially eliminated.
  • an improved hood latching device for an automotive vehicle having a hood, said device comprising, in combination, a striker secured to the hood, a base plate secured to the vehicle, a first latch member pivotally mounted on the base plate so as to be rotatable between an unlatching position and a latching position and having a first engaging portion engageable with the striker and a catch portion, a second latch member pivotally mounted on the base plate and having a hook portion also engageable with the striker to arrest the same in an arresting position and a second engaging portion, a pawl also pivotally mounted on the base plate and having a third engaging portion engageable with the first engaging portion of the first latch member in said latching position of the same for assuring the latching engagement between the striker and the first latch member, and catch means provided on the pawl member and being operative to abut against the second latch member to displace the same to said arresting position when an angular displacement of the paw
  • FIG. I is a front eleVation of an example of a hood latching device according to the present invention in a state wherein the hood is about to be opened;
  • FIG. 2 is a sectional view taken along the line IIII in FIG. I as viewed in the arrow direction;
  • FIG. 3 is a front elevation of the same example in a state wherein the hood cover is closed.
  • FIG. 4 is a front elevation of the same example in a state wherein the striker has been disengaged from the first latch member and is now engaging with the second latch member.
  • the hood latching device shown therein has a base plate 11 fixed to the body of an automotive vehicle and having an upwardly opening guide slot Ila for receiving a striker 12 of generally U- shaped configuration fixed to the openable hood of the vehicle.
  • a first latch member 13 pivotally mounted on the plate 11 by means of a pivotal shaft 16.
  • the first latch member 13 has a fork portion 13d comprising a central U-shaped recess 13a and two projecting portions 1312 and 13c provided on the two sides of the central recess which constitutes a first engaging portion engageable with the striker 12.
  • the projecting portion 13b is designed to abut against a flanged edge llh of the base plate 11 bent perpendicularly to the plane of the base plate 11 for limiting excessive counterclockwise rotation of the first latch member 13, and the other projecting portion (or tooth portion) 130 is engageable with a stepped portion (or second engaging portion) of a pawl member 14 as hereinafter described in more detail.
  • the first latch member I3 is further provided with a catch portion 13a extending at right angles to the fork portion 13:! and bent perpendicularly to the plane of the first latch member 13 so that the catch portion l3e is engageable with a third engaging portion 15(' of a second latch member 15 as described hereinlater in more detail.
  • the first latch member 13 is further provided with a lever portion 13f extending outward from the pivot center and oppositely from the catch portion 13v on the other side of the pivotal shaft 16. By depressing the lever' portion 13f in the clockwise direction, the first latch member 13 is rotated in the same direction for disengaging the catch portion 130 from the third engaging portion c of the second latch member 15.
  • the pawl member 14 and the second latch member 15 are also pivotally mounted on the righthand side of the base plate 11 as viewed in FIG. 1 at approximately the central part thereof on a common shaft 17 which is fixed to the base plate 11. the pawl member 14 and the second latch member 15 being independently rotatable around the shaft 17.
  • the pivotal shaft 16 is also fixed to the base plate 11, and one end of a torsional spring 18 disposed around the pivotal shaft 16 is secured thereto.
  • the other end of the torsional spring 18 is passed through an arcuate slot 13;: formed approximately centrally in the part of the first latch member 13 formed into the catch portion 13: and through another arcuate slot 11c formed through the base plate 11.
  • the first latch member 13 is urged by the torsional spring 18 to rotate in the counterclockwise direction through an angle determined by the length of the arcuate slot 11L.
  • One end of another torsional spring 19 disposed around the pivotal shaft 17 is secured thereto, and the other end of the torsional spring 19 is inserted into a hole 15a provided through the second latch member 15, whereby the member 15 is urged to rotate in the clockwise direction around the pivotal shaft 17.
  • the upper end of the second latch member 15 is formed into a hook portion 15b engageable with the striker l2, and the lower part of the second latch member 15 is provided with the third engaging portion 150 engageable with the catch portion 130 of the first latch member 13 as best illustrated in FIG. 4.
  • an arcuate slot 14h is provided in the lower part of the pawl member 14. and over the part of the pawl member 14 having the slot 1412.21 bent plate 14g is rigidly secured to the pawl member 14 at 14/1. which plate 14g has a slot similar to the slot 14b and providing a gap for allowing a wire 20 to pass between the pawl 14 and the plate 145;.
  • an end piece 20a of the wire 20 is inserted thereby allowing the pawl 14 to rotate in the counterclockwise direction around the pivotal shaft 17.
  • abutting portion 140 which can be brought into contact with a flanged edge 11d of the base plate 11 bent perpendicularly to the front surface thereby to restrict excessive clockwise rotation of the pawl 14 around the pivot shaft 17.
  • a catch portion 14d which is bent perpendicularly to the surface of the pawl 14 so that the portion 14d is engageable with the right side edge (or shoulder) of the sec ond latch member 15 thereby to displace the second latch member in the counterclockwise direction.
  • a spring anchoring portion 140 bent perpendicularly to the surface of the pawl 14 is provided Likewise. a lower part of the first latch member 13 is bent perpendicularly to the surface of the first latch member 13 thereby to provide a spring anchoring portion 13/1, and a coil spring 21 is stretched between the two spring anchoring portions 140 and 135;.
  • the first latch member 13 is urged to rotate in the counterclockwise direction. while the pawl 14 is thereby urged to rotate in the clockwise direction.
  • the pawl member 14 is further provided with a cam surface l4fon the left side edge of the pawl member at a portion between the second engaging portion 14a and the upper end of the pawl member l4). the cam surface 14f conforming to the locus of the tip of the tooth portion 13- as the first latch member 13 is rotated around the pivotal shaft 16.
  • the base plate 11 is also provided with mounting flanges lle and 11f on the right side and left side ends thereof as shown in FIG. 2.
  • the second latch member 15 is further provided with a cam surface 15d between the hooked portion 15b and the third engaging portion 150.
  • the cam surface 15:! contacts the striker 12 when the latter comes down into the U-shaped recess 11a of the base plate 11, whereby the second latch member 15 is rotated in the counterclockwise direction around its pivotal shaft 17.
  • the hood latch device of the above described structural organization according to the present invention operates as follows.
  • the rotation of the pawl 14 is transmitted through the catch portion 14d of the pawl 14 to the right side edge (or shoulder) of the second latch member 15, thereby rotating the second latch member 15 around the pivotal shaft 17 in the counterclockwise direction.
  • the catch portion 14d of the pawl 14 is separated from the right side edge (or shoulder) of the second latch member 15, and the torque applied to the second latch member 15 through the catch portion 14d of the pawl 14 is removed.
  • the above described clockwise rotation of the pawl 14 tends to rotate the second latch member 15 clockwise as a result of the action of the torsional spring 19, such a rotation is prevented because of the engagement of the cam surface 15d of the second latch member 15 with the lower end of the striker l2, and the second latch member 15 is thus held in the position shown in FIG. 3, wherein the hood of the vehicle is completely closed.
  • a lever (not shown) or a button (not shown; is operated at the vehicle driver's seat, thereby pulling the wire 20 to the right as viewed in FIG. 3.
  • the end piece 20a of the wire 20 is displaced rightward along the arcuate slot 14)), thereby rotating the pawl 14 to a position as indicated by the chain line in FIG. 3.
  • the engagement be tween the tooth portion 130 and the second engaging portion 14a of the pawl 14 is broken, and the striker 12 is thrown upward by the forces of the springs 18 and 21.
  • the catch portion 14d of the pawl 14 is at this time urging the shoulder of the second latch member to turn in the counterclockwise direction when the wire is pulled rightward, and the second latch member 15 is thereby held in the position indicated by the chain line in FIG. 3.
  • the first latch member 13 is rotated counterclockwise to a position as shown in FIG. 4 or FIG. 1, and the third engaging portion 150 of the second latch member 15 thereby engages the catch portion 130 of the first latch member 13 even after the wire 20 has been released.
  • the cam surface 14f of the pawl 14 conforms to the locus of the tip of the tooth portion 13(- of the first latch member 13.
  • the catch portion 14d of the pawl 14 holds the second latch member 15 at the position indicated in FIG. 3 by the chain line as long as the tooth portion 130 is contacting the cam surface 141' of the pawl 14.
  • the third engaging portion 15- of the second latch member 15 engages the second catch portion 130 of the first latch member 13, whereby the hooked portion 15b of the second latch member 15 is held at a position engageable with the striker l2, and further opening of the hood beyond this state is thereby prevented.
  • the first latch member 13 When it is desired to open the hood from the state indicated in FIG. 4 by disengaging the second latch member 15 from the striker 12, the first latch member 13 is rotated around the shaft 16 against the tension of only the spring 21 by manually depressing the lever portion 13f of the first latch member 13 because the free end of the spring 18 is sustained by an end of the arcuate slot 110, and the hole 13;; of the first latch member 13 is of an elongated configuration.
  • the second catch portion 130 of the first latch member 13 is thus disengaged from the third engaging portion 15c of the second latch member 15, and the second latch member 15 is rotated clockwise to the position shown in FIG. 1 by the force of the spring 19.
  • the second latch member 15 is thus disengaged from the striker l2, and the hood is thereby opened.
  • the hood latch ing device is so organized that when the pawl is disengaged from the first latch member, the movement of the pawl forces the second latch member to move into a position where the hooked portion of the second latch member is firmly held against any accidental release of the striker even in the cases where the pawl is disengaged from the first latch member by shock or vibration to which the vehicle body is subjected, whereby the possibility of the hereinbefore described loss of visibility due to full opening of the hood by wind pressure can be substantially eliminated.
  • a hood latching device for an automotive vehicle having an openable hood comrising: a striker secured to the hood; a base plate secured to the vehicle; a first latch member pivotally mounted on the base plate so as to be rotatable between an unlatching position and a latching position and having a first engaging portion engageable with the striker and a catch portion; a second latch member pivotally mounted on the base plate so as to be rotatable between a striker-arresting position and a non-arresting position and having a hook portion also engageable with the striker to arrest the same in said arresting position and a second engaging portion; a pawl member pivotally mounted on the base plate and having a third engaging portion engageable with the first engaging portion of the first latch member in said latching position of the same for assuring latching engagement between the striker and the first engaging portion of the first latch member; and catch means provided on the pawl member and being operative to abut against said second latch member to displace the same to said arrest
  • a hood latching device as set forth in claim 2 wherein said cam surface means provided on the pawl member is so shaped that it conforms to the locus of the tip of said first engaging portion of said first latch member when the latter member is rotated between its latching and unlatching positions.

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  • Lock And Its Accessories (AREA)
  • Superstructure Of Vehicle (AREA)
US52286774 1973-11-30 1974-11-11 Hood latching device for automotive vehicles Expired - Lifetime US3905624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13455673A JPS569634B2 (ko) 1973-11-30 1973-11-30

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US3905624A true US3905624A (en) 1975-09-16

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US52286774 Expired - Lifetime US3905624A (en) 1973-11-30 1974-11-11 Hood latching device for automotive vehicles

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Cited By (65)

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US4317533A (en) * 1978-01-30 1982-03-02 Regie Nationale Des Usines Renault Retaining and locking arrangement for spare tire cradle
US4875724A (en) * 1986-10-29 1989-10-24 Magna International Inc. Hood latch mechanism
US4911487A (en) * 1986-05-12 1990-03-27 Cleveland Hardware & Forging Co. Rotary paddle latch
US4936611A (en) * 1988-02-03 1990-06-26 Magna International Inc. Hood latch
US4961601A (en) * 1988-08-29 1990-10-09 General Motors Corporation Vehicle closure latch and pop-up device
EP0397333A2 (en) * 1989-05-08 1990-11-14 Hoover Universal, Inc. Vehicle seat latch with take-up mechanism
US5048877A (en) * 1990-04-04 1991-09-17 General Motors Corporation Pop-up hood latch
US5052200A (en) * 1989-06-29 1991-10-01 Daimerler-Benz Ag Locking device for lock components in/on vehicles
US5118146A (en) * 1990-07-19 1992-06-02 Nissan Motor Co., Ltd. Lock device for hood of automotive engine room having a lost-motion mechanism
US5150933A (en) * 1991-10-29 1992-09-29 General Motors Corporation Latch having torsion spring leg and leaf spring leg
US5618069A (en) * 1995-07-21 1997-04-08 General Motors Corporation Hood and decklid latch assemblies
US5738393A (en) * 1996-11-08 1998-04-14 Ford Global Technologies, Inc. Automotive hood latch having remote actuator
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US20040113435A1 (en) * 2002-12-11 2004-06-17 Tri/Mark Corporation Latch assembly for a movable closure element
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US2924473A (en) * 1956-07-09 1960-02-09 Chicago Forging & Mfg Co Safety latch mechanism
US3236551A (en) * 1961-02-27 1966-02-22 Chrysler Corp Hood latch
US3572793A (en) * 1969-07-11 1971-03-30 Atwood Vacuum Machine Co Hood latch with positive return release lever

Cited By (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317533A (en) * 1978-01-30 1982-03-02 Regie Nationale Des Usines Renault Retaining and locking arrangement for spare tire cradle
US4911487A (en) * 1986-05-12 1990-03-27 Cleveland Hardware & Forging Co. Rotary paddle latch
US4875724A (en) * 1986-10-29 1989-10-24 Magna International Inc. Hood latch mechanism
US4936611A (en) * 1988-02-03 1990-06-26 Magna International Inc. Hood latch
US4961601A (en) * 1988-08-29 1990-10-09 General Motors Corporation Vehicle closure latch and pop-up device
EP0397333A3 (en) * 1989-05-08 1991-08-28 Hoover Universal, Inc. Vehicle seat latch with take-up mechanism
EP0397333A2 (en) * 1989-05-08 1990-11-14 Hoover Universal, Inc. Vehicle seat latch with take-up mechanism
US5052200A (en) * 1989-06-29 1991-10-01 Daimerler-Benz Ag Locking device for lock components in/on vehicles
US5048877A (en) * 1990-04-04 1991-09-17 General Motors Corporation Pop-up hood latch
US5118146A (en) * 1990-07-19 1992-06-02 Nissan Motor Co., Ltd. Lock device for hood of automotive engine room having a lost-motion mechanism
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JPS5083919A (ko) 1975-07-07
JPS569634B2 (ko) 1981-03-03

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