US3597811A - Seat belts fastener - Google Patents

Seat belts fastener Download PDF

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Publication number
US3597811A
US3597811A US17228A US3597811DA US3597811A US 3597811 A US3597811 A US 3597811A US 17228 A US17228 A US 17228A US 3597811D A US3597811D A US 3597811DA US 3597811 A US3597811 A US 3597811A
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United States
Prior art keywords
frame
buckle
latch member
shank
pawl
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Expired - Lifetime
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US17228A
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Douglas J Cunningham
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Wingard Ltd
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Wingard Ltd
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2515—Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and perpendicularly to the direction of the fastening action
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45675—Receiving member includes either movable connection between interlocking components or variable configuration cavity having pivotally connected interlocking component
    • Y10T24/45696—Requiring manual force thereon to interlock or disengage
    • Y10T24/45712—Requiring manual force thereon to interlock or disengage having interlocking portion thereof housed continuously within cavity

Definitions

  • one part comprises a flat shank having a step on at least one side edge and adapted to enter between parallel walls of a frame member in the other part, and a latch member mounted to rock on the frame carries a pawl working in aligned sector-shaped openings in the walls and adapted to engage with the step in the shank of the first part when that is pressed home into the frame.
  • the most commonly used form of seat belt comprises a lap strap attached at one end to a floor anchorage and a diagonal shoulder strap attached at one end to an elevated anchorage on the body or on a pillar.
  • the other ends of the straps are attached to one part of a two-part separable buckle of which the second part may be attached by a short length of strap to a load-carrying part of the vehicle such as the floor or shaft tunnel, or may be mounted on a rigid or semirigid stalk or arm which supports it in a convenient attitude and position.
  • the first part to which the lap and diagonal straps are connected comprises a flat stem or shank having mom or each side behind a tapered or rounded nose a step or shoulder
  • the second part comprises a frame incorporating two parallel walls between which the stem or shank on the first part enters and a spring-loaded latch member which is free to rock on the frame and carries a flat pawl or strut working in aligned sector-shaped openings in the walls of the frame offset from the centerline of the frame.
  • the apices of the sector-shaped openings are directed towards the open upper end of the frame and the latch member is loaded by a spring which normally holds the pawl or strut against the radial edges of the openings nearest the centerline of the frame.
  • the nose engages the pawl or strut and pushes the latch member aside until the nose has passed the pawl or strut, whereupon the latch member is returned by its spring and the pawl or strut is engaged between the adjacent step or shoulder on the stem and the apices of the openings in the frame.
  • the opposite side of the stem is backed by an end wall of the frame which joins the parallel sidewalls, and the pawl or strut is inclined at a small angle to the centerline of the frame in a direction such that a force tending to separate the two parts of the buckle has a component retaining the latch member in the locked position.
  • the latch member is simply rocked over to displace the pawl or strut outwardly clear of the step or shoulder on the stem.
  • FIG. I is a vertical section of the complete assembly
  • FIG. 2 is a perspective view of the cooperating parts of the buckle without the housing
  • FIG. 3 is a fragmentary view of the latch member and pawl.
  • the first part of the buckle illustrated is a flat tongue having a wide upper portion in which there is a slot 11 to receive a length of webbing forming the lap and diagonal straps of a seat belt.
  • Integral with the portion 10 is a flat shank 12 having on one or each side behind a tapered or rounded nose [3 a step or shoulder 14.
  • the second part of the buckle comprises a frame into which the shank 12 is adapted to enter.
  • the frame is formed as a stout sheet metal pressing folded to provide two parallel walls 15 joined by a vertical end wall 16.
  • Aligned openings 17 of sector shape each subtending an angle of about 45 are formed in the parallel walls of the frame, the openings being offset to one side of the vertical centerline of the frame.
  • the apices of the openings are directed towards the upper end of the frame which is open and their inner radial edges are directed inwardly from the apices at an acute angle to the vertical centerline of the frame,
  • a latch member which. is mounted to rock on the frame is also formed from sheet metal and comprises two parallel limbs 18 which freely embrace the frame'from the closed end, and an end part 19 which'is extended downwardly to form a finger piece.
  • the latch member carries a pawl or strut comprising a flat steel member 21 of rectangular outline. Its ends are held in slots in the limbs of the latch member and it passes freely through the aligned sector-shaped openings 17 in the frame.
  • a compression spring 22 located between the finger piece 19 of the latch and the adjacent closed end of the frame normally holds the pawl or strut against the inner radial edges of the openings.
  • the upper edge of the pawl or strut and the apices of the sector-shaped openings 17 are radiused as shown at 23 to allow the pawl or strut to rock freely about its upper edge in the openings.
  • inwardly cranked lugs 24 may be provided on the walls 15 at their free edges to guide the stem of the first part of the buckle, any gap between the lugs beingless than the thickness ofthe stem.
  • the walls of the frame are drilled to receive a pin 25 for connecting to the frame rigid or semirigid stalk or arm 26 which is anchored to a load-carrying part of the vehicle and supports the frame in a convenient attitude and position for the insertion of the first part.
  • the frame will usually be enclosed in a moulded plastic or other housing 27 which has at its upper end a separate funnelshaped portion 28 leading into the upper end of the frame to facilitate the entry of the stern on the first part of the buckle.
  • the finger piece 19 of the latch member is accessible through an opening 29 in the side of .the housing.
  • any pull applied to the first part of the buckle is transmitted through the pawl directly to the frame which is itself secured to the anchored stalk or arm 26 so that the whole assembly can be kept relatively short.
  • a two-part buckle for a safety seat belt comprising a first part to which lap and diagonal straps of the seat belt are connected and a second part with which the first part has a snapin releasableengagement, wherein said first part comprises a flat shank with a tapered nose and a step in at least one side edge, and the second part comprises a frame having parallel sidewalls between which said shank on the first part is adapted to enter, aligned sector-shaped openings in said walls offset from the centerline of the frame, a spring-pressed latch member, a flat pawl which is mounted in said latch member and is engaged in said sector-shaped openings to form a fulcrum about which said latch member rocks, said pawl being adapted to engage between the apices of the sector-shaped openings and the step on the shank of the first part when said shank is inserted into the frame.

Abstract

In a two-part separable buckle for a safety seat belt for vehicles, one part comprises a flat shank having a step on at least one side edge and adapted to enter between parallel walls of a frame member in the other part, and a latch member mounted to rock on the frame carries a pawl working in aligned sectorshaped openings in the walls and adapted to engage with the step in the shank of the first part when that is pressed home into the frame.

Description

United States Patent [72] Inventor Douglas J. Cunningham Chichester, England [2i] Appl, No. 17,228
[22] Filed Mar. 6, 1970 [45] Patented Aug. 10, i971 [73] Assignee Wingard Limited Chichester, England [32] Priority July 11, 1969 [33] Great Britain 1541 SEAT BELTS FASTENER I 7 Claims, 3 Drawing Figs.
[52] [1.8. CI 24/230 [5 1] Int. CL, A44b 11/26 [50] Field of Search 24/230 AV, 230 A [56] References Cited UNITED STATES PATENTS 3,131,446 5/1964 Davis 24/230 A FOREIGN PATENTS 409,842 5 1910 France 24 230 AV,
Primary Examiner-Bernard A. Gelak AnorneyScrivener, Parker, Scrivener and Clarke ABSTRACT: In a two-part separable buckle for a safety seat belt for vehicles, one part comprises a flat shank having a step on at least one side edge and adapted to enter between parallel walls of a frame member in the other part, and a latch member mounted to rock on the frame carries a pawl working in aligned sector-shaped openings in the walls and adapted to engage with the step in the shank of the first part when that is pressed home into the frame.
- Patented Aug. 10, 1971 SEAT BELTS FASTENER This invention relates to improvements in safety seat belts for vehicles.
The most commonly used form of seat belt comprises a lap strap attached at one end to a floor anchorage and a diagonal shoulder strap attached at one end to an elevated anchorage on the body or on a pillar. The other ends of the straps are attached to one part of a two-part separable buckle of which the second part may be attached by a short length of strap to a load-carrying part of the vehicle such as the floor or shaft tunnel, or may be mounted on a rigid or semirigid stalk or arm which supports it in a convenient attitude and position.
When the belt is being put on the lap and diagonal straps are brought across the body of the wearer and the first part of the buckle is engaged with the second part. if the second part is mounted on a rigid or semirigid stalk or arm this operation can be carried out with one hand.
In a two-part buckle for a safety seat belt according to our invention the first part to which the lap and diagonal straps are connected comprises a flat stem or shank having mom or each side behind a tapered or rounded nose a step or shoulder, and the second part comprises a frame incorporating two parallel walls between which the stem or shank on the first part enters and a spring-loaded latch member which is free to rock on the frame and carries a flat pawl or strut working in aligned sector-shaped openings in the walls of the frame offset from the centerline of the frame. 7
The apices of the sector-shaped openings are directed towards the open upper end of the frame and the latch member is loaded by a spring which normally holds the pawl or strut against the radial edges of the openings nearest the centerline of the frame.
When the stem or shank on the first part of the buckle is entered into the frame the nose engages the pawl or strut and pushes the latch member aside until the nose has passed the pawl or strut, whereupon the latch member is returned by its spring and the pawl or strut is engaged between the adjacent step or shoulder on the stem and the apices of the openings in the frame.
in this locked position of the buckle the opposite side of the stem is backed by an end wall of the frame which joins the parallel sidewalls, and the pawl or strut is inclined at a small angle to the centerline of the frame in a direction such that a force tending to separate the two parts of the buckle has a component retaining the latch member in the locked position.
To separate the two parts of the buckle the latch member is simply rocked over to displace the pawl or strut outwardly clear of the step or shoulder on the stem.
One form of buckle embodying our invention is illustrated by way of example in the accompanying drawings in which:
FIG. I is a vertical section of the complete assembly;
FIG. 2 is a perspective view of the cooperating parts of the buckle without the housing; and
FIG. 3 is a fragmentary view of the latch member and pawl.
The first part of the buckle illustrated is a flat tongue having a wide upper portion in which there is a slot 11 to receive a length of webbing forming the lap and diagonal straps of a seat belt.
Integral with the portion 10 is a flat shank 12 having on one or each side behind a tapered or rounded nose [3 a step or shoulder 14.
The second part of the buckle comprises a frame into which the shank 12 is adapted to enter.
The frame is formed as a stout sheet metal pressing folded to provide two parallel walls 15 joined by a vertical end wall 16. Aligned openings 17 of sector shape each subtending an angle of about 45 are formed in the parallel walls of the frame, the openings being offset to one side of the vertical centerline of the frame. The apices of the openings are directed towards the upper end of the frame which is open and their inner radial edges are directed inwardly from the apices at an acute angle to the vertical centerline of the frame,
A latch member which. is mounted to rock on the frame is also formed from sheet metal and comprises two parallel limbs 18 which freely embrace the frame'from the closed end, and an end part 19 which'is extended downwardly to form a finger piece.
The latch member carries a pawl or strut comprising a flat steel member 21 of rectangular outline. Its ends are held in slots in the limbs of the latch member and it passes freely through the aligned sector-shaped openings 17 in the frame. A compression spring 22 located between the finger piece 19 of the latch and the adjacent closed end of the frame normally holds the pawl or strut against the inner radial edges of the openings.
The upper edge of the pawl or strut and the apices of the sector-shaped openings 17 are radiused as shown at 23 to allow the pawl or strut to rock freely about its upper edge in the openings.
At the upper end of the frame inwardly cranked lugs 24 may be provided on the walls 15 at their free edges to guide the stem of the first part of the buckle, any gap between the lugs beingless than the thickness ofthe stem.
At their lower ends the walls of the frame are drilled to receive a pin 25 for connecting to the frame rigid or semirigid stalk or arm 26 which is anchored to a load-carrying part of the vehicle and supports the frame in a convenient attitude and position for the insertion of the first part.
The frame. will usually be enclosed in a moulded plastic or other housing 27 which has at its upper end a separate funnelshaped portion 28 leading into the upper end of the frame to facilitate the entry of the stern on the first part of the buckle.
The finger piece 19 of the latch member is accessible through an opening 29 in the side of .the housing.
It will be appreciated that in the locked position of the buckle shown in FIG. 1 the side of the stem or shank l2 opposite the pawl 21 is backed by the end wall 16 of the frame and the pawl is inclined at a small angle to the centerline of the frame in a direction such that a force tending to separate the two parts of the buckle has a component retaining the latch member in the locked position.
Further, any pull applied to the first part of the buckle is transmitted through the pawl directly to the frame which is itself secured to the anchored stalk or arm 26 so that the whole assembly can be kept relatively short.
In the above description the term vertical" has been used for convenience in relation to the frame, but it will be understood that in use the frame need not be vertical but can be inclined at any angle convenient for the insertion into it of the first part of the buckle.
I claim: 4
l. A two-part buckle for a safety seat belt comprising a first part to which lap and diagonal straps of the seat belt are connected and a second part with which the first part has a snapin releasableengagement, wherein said first part comprises a flat shank with a tapered nose and a step in at least one side edge, and the second part comprises a frame having parallel sidewalls between which said shank on the first part is adapted to enter, aligned sector-shaped openings in said walls offset from the centerline of the frame, a spring-pressed latch member, a flat pawl which is mounted in said latch member and is engaged in said sector-shaped openings to form a fulcrum about which said latch member rocks, said pawl being adapted to engage between the apices of the sector-shaped openings and the step on the shank of the first part when said shank is inserted into the frame.
2. A two-part buckle as in claim 1, wherein the apices of said sector-shaped openings in the walls of the frame of the second part are directed towards the upper end of the frame which is open to receive the shank on the first part, and the latch member is loaded by a spring which urges the pawl towards the radial edges of the openings nearest the centerline of the frame.
3. A two-part buckle as in claim 2, wherein the radial edges of the sector-shaped openings in the walls of the frame nearest the centerline of the frame are inclined at an acute angle to said centerline in a direction such that in the engaged condition of the buckle any force tending to separate the two parts of the buckle has a component retaining the latch member in the engaged position.
4. A two-part buckle as in claim 1, wherein said parallel sidewalls of the frame are connected by an end wall by which the side of the shank of the first part of the buckle remote from the latch member is backed when the two parts of the buckle are engaged.
S. A two-part buckle as in claim 1, wherein said latch member is a sheet metal pressing having spaced parallel limbs

Claims (7)

1. A two-part buckle for a safety seat belt comprising a first part to which lap and diagonal straps of the seat belt are connected and a second part with which the first part has a snapin releasable engagement, wherein said first part comprises a flat shank with a tapered nose and a step in at least one side edge, and the second part comprises a frame having parallel sidewalls between which said shank on the first part is adaPted to enter, aligned sector-shaped openings in said walls offset from the centerline of the frame, a spring-pressed latch member, a flat pawl which is mounted in said latch member and is engaged in said sector-shaped openings to form a fulcrum about which said latch member rocks, said pawl being adapted to engage between the apices of the sector-shaped openings and the step on the shank of the first part when said shank is inserted into the frame.
2. A two-part buckle as in claim 1, wherein the apices of said sector-shaped openings in the walls of the frame of the second part are directed towards the upper end of the frame which is open to receive the shank on the first part, and the latch member is loaded by a spring which urges the pawl towards the radial edges of the openings nearest the centerline of the frame.
3. A two-part buckle as in claim 2, wherein the radial edges of the sector-shaped openings in the walls of the frame nearest the centerline of the frame are inclined at an acute angle to said centerline in a direction such that in the engaged condition of the buckle any force tending to separate the two parts of the buckle has a component retaining the latch member in the engaged position.
4. A two-part buckle as in claim 1, wherein said parallel sidewalls of the frame are connected by an end wall by which the side of the shank of the first part of the buckle remote from the latch member is backed when the two parts of the buckle are engaged.
5. A two-part buckle as in claim 1, wherein said latch member is a sheet metal pressing having spaced parallel limbs which embrace said frame and in which the ends of the pawl are located.
6. A two-part buckle as in claim 1, wherein said frame of the second part of the buckle is connected at its lower end to a rigid stalk adapted to be secured to a load-carrying part of a vehicle.
7. A two-part buckle as in claim 1, wherein said frame of the second part of the buckle is enclosed in a moulded plastic housing having an opening in one side through which said latch member is accessible.
US17228A 1969-07-11 1970-03-06 Seat belts fastener Expired - Lifetime US3597811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34982/69A GB1287272A (en) 1969-07-11 1969-07-11 Improvements relating to buckles for safety seat belts for vehicles

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US3597811A true US3597811A (en) 1971-08-10

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US17228A Expired - Lifetime US3597811A (en) 1969-07-11 1970-03-06 Seat belts fastener

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US (1) US3597811A (en)
JP (1) JPS4826469B1 (en)
DE (1) DE2017648A1 (en)
FR (1) FR2048368A5 (en)
GB (1) GB1287272A (en)
MY (1) MY7500298A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877115A (en) * 1974-05-20 1975-04-15 Int Eng Service Pushbutton release connector
US3877116A (en) * 1972-03-30 1975-04-15 Gey Patenter Ab Push button belt fastener
US4047267A (en) * 1973-12-27 1977-09-13 Lindblad O L Device in connection with locks for safety belts
US4096606A (en) * 1976-03-04 1978-06-27 Allied Chemical Corporation Ferrule buckle with sliding release button
US4134186A (en) * 1976-08-25 1979-01-16 Stakupress Gesellschaft Fur Stahl-Und Kunststoffverarbeitung Mbh & Co., Kg Safety belt fastening
US4313246A (en) * 1979-07-23 1982-02-02 Repa Feinstanzwerk Gmbh Belt buckle or lock for a safety belt
US4393555A (en) * 1980-04-02 1983-07-19 Repa Feinstanzwerk Gmbh Belt lock for a safety belt
US4408374A (en) * 1980-04-02 1983-10-11 Repa Feinstanzwerk Gmbh Belt lock for a safety belt
US4490892A (en) * 1981-12-16 1985-01-01 Nsk-Warner K.K. Buckle device
US4625371A (en) * 1984-11-22 1986-12-02 Nsk-Warner K.K. Seat belt buckle
US4750244A (en) * 1986-03-10 1988-06-14 Nippon Seiko Kabushiki Kaisha Actuator-equipped buckle
WO2001067910A1 (en) * 2000-03-13 2001-09-20 Am-Safe Incorporated Airbag buckle assembly
US20090146011A1 (en) * 2004-03-18 2009-06-11 Greg Alan Ritter Docking system
US20110004717A1 (en) * 2004-03-18 2011-01-06 Michigan Aerospace Corporation Docking system
US20110008102A1 (en) * 2004-03-18 2011-01-13 Michigan Aerospace Corporation Docking system
US8683661B2 (en) * 2012-07-05 2014-04-01 Hsi-Hsin Chen Push button type belt buckle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50103178U (en) * 1974-01-29 1975-08-26
FR153080A (en) * 1974-04-10
JPS5385584U (en) * 1976-12-16 1978-07-14
JPS5419747U (en) * 1977-07-11 1979-02-08
JPS59164012U (en) * 1983-04-07 1984-11-02 富士通株式会社 Structure of optical tape fiber
US4738126A (en) * 1986-05-16 1988-04-19 Haberle Bruce V Releasable locking device
JPH0382516U (en) * 1989-12-15 1991-08-22

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR409842A (en) * 1909-02-03 1910-05-02 Nicolas Alexis Didierjean Instant button for boots and gaiters
US3131446A (en) * 1963-05-28 1964-05-05 Frank L Davis Seat belt buckle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR409842A (en) * 1909-02-03 1910-05-02 Nicolas Alexis Didierjean Instant button for boots and gaiters
US3131446A (en) * 1963-05-28 1964-05-05 Frank L Davis Seat belt buckle

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877116A (en) * 1972-03-30 1975-04-15 Gey Patenter Ab Push button belt fastener
US4047267A (en) * 1973-12-27 1977-09-13 Lindblad O L Device in connection with locks for safety belts
US3877115A (en) * 1974-05-20 1975-04-15 Int Eng Service Pushbutton release connector
US4096606A (en) * 1976-03-04 1978-06-27 Allied Chemical Corporation Ferrule buckle with sliding release button
US4134186A (en) * 1976-08-25 1979-01-16 Stakupress Gesellschaft Fur Stahl-Und Kunststoffverarbeitung Mbh & Co., Kg Safety belt fastening
US4313246A (en) * 1979-07-23 1982-02-02 Repa Feinstanzwerk Gmbh Belt buckle or lock for a safety belt
US4393555A (en) * 1980-04-02 1983-07-19 Repa Feinstanzwerk Gmbh Belt lock for a safety belt
US4408374A (en) * 1980-04-02 1983-10-11 Repa Feinstanzwerk Gmbh Belt lock for a safety belt
US4490892A (en) * 1981-12-16 1985-01-01 Nsk-Warner K.K. Buckle device
US4625371A (en) * 1984-11-22 1986-12-02 Nsk-Warner K.K. Seat belt buckle
US4750244A (en) * 1986-03-10 1988-06-14 Nippon Seiko Kabushiki Kaisha Actuator-equipped buckle
WO2001067910A1 (en) * 2000-03-13 2001-09-20 Am-Safe Incorporated Airbag buckle assembly
US6442807B1 (en) * 2000-03-13 2002-09-03 Am-Safe, Inc. Airbag buckle assembly
US20090146011A1 (en) * 2004-03-18 2009-06-11 Greg Alan Ritter Docking system
US20110004717A1 (en) * 2004-03-18 2011-01-06 Michigan Aerospace Corporation Docking system
US20110008102A1 (en) * 2004-03-18 2011-01-13 Michigan Aerospace Corporation Docking system
US8056864B2 (en) 2004-03-18 2011-11-15 Michigan Aerospace Corporation Docking system
US8240613B2 (en) 2004-03-18 2012-08-14 Michigan Aerospace Corporation Docking system
US8245370B2 (en) * 2004-03-18 2012-08-21 Michigan Aerospace Corporation Docking system
US8683661B2 (en) * 2012-07-05 2014-04-01 Hsi-Hsin Chen Push button type belt buckle

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Publication number Publication date
FR2048368A5 (en) 1971-03-19
MY7500298A (en) 1975-12-31
DE2017648A1 (en) 1971-01-28
GB1287272A (en) 1972-08-31
JPS4826469B1 (en) 1973-08-10

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