EP0566856A1 - Extrémité de désaccouplement de boucle avec un linguet pivotant de dégagement - Google Patents

Extrémité de désaccouplement de boucle avec un linguet pivotant de dégagement Download PDF

Info

Publication number
EP0566856A1
EP0566856A1 EP93103921A EP93103921A EP0566856A1 EP 0566856 A1 EP0566856 A1 EP 0566856A1 EP 93103921 A EP93103921 A EP 93103921A EP 93103921 A EP93103921 A EP 93103921A EP 0566856 A1 EP0566856 A1 EP 0566856A1
Authority
EP
European Patent Office
Prior art keywords
pawl
buckle
button
lever
tongue
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.)
Withdrawn
Application number
EP93103921A
Other languages
German (de)
English (en)
Inventor
James R. Anthony
David D. Merrick
Douglas W. Bittner
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.)
Indiana Mills and Manufacturing Inc
Original Assignee
Indiana Mills and Manufacturing Inc
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 Indiana Mills and Manufacturing Inc filed Critical Indiana Mills and Manufacturing Inc
Publication of EP0566856A1 publication Critical patent/EP0566856A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A44B11/2523—Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and in the same direction as the fastening action

Definitions

  • This invention relates generally to tongue and buckle fasteners such as are typically employed in safety belt harnesses, and more specifically to a tongue and buckle fastener having an improved mechanism for releasing the tongue from the buckle.
  • Safety belt harnesses of the prior art employ a variety of means to secure and release the belt. Most commonly, a tongue and buckle combination is employed so that the harness can be quickly and easily fastened or released. With these buckles, it is known to use a tongue having one or more apertures so that when the tongue is inserted into the buckle it may engage a pawl. The pawl typically drops into the tongue aperture when the tongue is fully inserted into the buckle, holding the tongue securely in place. When the pawl is disengaged from the tongue aperture, the tongue can be removed from the buckle and the safety harness released.
  • the top plate of the buckle is connected to the pawl and acts to pull the pawl from the tongue aperture when the buckle plate is lifted.
  • These buckles are simple in operation and construction, but typically require that the buckle plate be lifted before the tongue can be inserted and engaged.
  • a push- button mechanism is used to push the pawl from the tongue aperture.
  • These models are generally more complicated in both design and construction, but they typically offer the advantage of allowing the tongue to be inserted into and engaged by the buckle without depressing the button. This design is significantly easier to use when inserting the tongue into the buckle, and is therefore preferred for many safety belt applications.
  • buttons In push-button buckles, it is known to locate the button on the top of the buckle housing where it may be pressed downward to disengage the pawl. Alternatively, the button may be located at the end of the buckle where it may be pressed inward to perform that same function.
  • springs may be used to bias the pawl to its engaged position and/or to eject the tongue when the pawl is disengaged.
  • the spring-loaded tongue ejector may also function to prevent the pawl from dropping into its lowered position when the tongue is removed, thereby allowing the tongue to be inserted into the buckle without re-lifting the pawl.
  • the present invention addresses that need.
  • An improved tongue and buckle combination includes a tongue with an aperture to receive a pawl, and a buckle having a pawl to engage the tongue.
  • the buckle also includes a lever to disengage the pawl from the tongue, and a device to pivot the pawl lever on the fulcrum.
  • the device to pivot the pawl lever on its fulcrum is attached to a push-button which is slidably received on the buckle frame.
  • the push-button may also include side ramps to assist in lifting the pawl.
  • the pawl lever may include one or more pawl blocks, which may further include indents to prevent the pawl from slipping away from the block when the block is engaged
  • a dual button buckle having pawl lifting levers is disclosed.
  • One object of the present invention is to provide a tongue and buckle combination which requires less force to operate, and can therefore be operated by those with injuries or other physical infirmities.
  • Another object of the present invention is to provide a button-type buckle having increased resistance to wear, and providing a smoother, more consistent operation over the life of the buckle.
  • FIG. 1 is a side elevational view in full section of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 2 is a front elevational view of the frame and pawl of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 3 is a side elevational view of the frame and pawl of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 4 is a top plan view of tire first frame member of the end release buckle of the present invention, according to one preferred embodiment, showing the apertures contained therein.
  • FIG. 5 is a perspective view of the pawl of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 6 is a perspective view of the pawl lever assembly of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 7 is a side elevational view of the pawl lever assembly of the end release buckle of the present invention, according to one preferred embodiment.
  • FIG. 8 is a side elevational view in full section of the push-button of the end release buckle of the present invention, looking along line 8--8 of FIG. 9 in the direction of the arrows.
  • FIG. 9 is an end elevational view of the push-button portion of the end release buckle of the present invention.
  • FIG. 10 is a side elevational view in full section of the end release buckle of the present invention, after the button has traveled in the direction of arrow "A".
  • FIG. 11 is a side elevational view in full section of the push-button assembly of the end release buckle of the present invention, according to one preferred "double button" embodiment.
  • FIG. 1 shows the basic components of the present invention.
  • Buckle 10 includes a frame 11, a pawl 12, a pawl lever 13, and means 14 to pivot the pawl lever on its fulcrum.
  • means 14 for pivoting the pawl lever on its fulcrum is attached to a push-button 15 which is slidably received on the frame.
  • Pawl lever 13 preferably includes shoulders 16 which rest on ears 17 in the frame, the lower portion of the frame ears acting as a fulcrum on which the lever 13 may pivot.
  • the entire buckle mechanism is substantially enclosed by a housing 18.
  • the front end of the housing is open to allow a tongue attached to one belt of a safety harness to be inserted into the buckle assembly.
  • the rearward end of the housing is preferably open to allow the frame to extend therethrough. As will be further illustrated in later figures, this end of the frame preferably includes an aperture to allow the other belt of a safety harness to be attached thereto.
  • the tongue 19 of a safety Harness buckle may be inserted into or removed from the buckle by movement in the direction of the arrows shown in FIG. 1.
  • the tongue of the present invention has an aperture near the end which is inserted into the buckle, said aperture being sized to receive a pawl.
  • the other end of the tongue is of course attached to one belt of the safety harness.
  • FIGS. 2, 3 and 4 show frame 11 in greater detail, and further illustrate pawl 12 in its raised position.
  • frame 11 includes a first frame member 20, and a second frame member 21.
  • First frame member 20 is generally planar in shape, while second frame member 21 includes both planar and channel-shaped portions. The planar portions of the two frame members are preferably joined together, so that frame 11 comprises one integral frame.
  • the channel-shaped end of second frame member 21 includes a lower wall 22, and two side walls 23a and 23b.
  • First frame member 20 and lower wall 22 are positioned in a spaced-apart relation, so that a passageway 25 is defined by the space therebetween.
  • Passageway 25 is sized to receive tongue 19 of the tongue and buckle combination.
  • side walls 23a and 23b extend upward past first frame member 20 along several portions of the channel section.
  • Frame ears 17 are formed in these side walls near the forward end of the channel, and are sized to receive the shoulders of pawl lever 13.
  • the rearward end of a leaf spring 28 is mounted on the frame by securing it to a cover piece 26 attached to the rearward portion 29 of the frame. The opposite, forward end of leaf spring 28 serves to bias the pawl to its downward position.
  • a belt aperture 30 is included near one end of the frame, so that a safety belt may be attached thereto.
  • a pawl aperture 31 is included near the other end of the frame, to receive the pawl.
  • Side apertures 32 and 33 are included in first frame member 20, so that side walls 23a and 23b may protrude therethrough.
  • the pawl 12 of the present invention is shown in FIG. 5, and includes a pawl tab 50, side legs 51, upper indent 52, side indents 53 and pawl shoulders 55.
  • Pawl tab 50 is sized to engage the aperture of the tongue, and is also adapted to pass easily through frame aperture 31.
  • Side legs 51 are positioned to pass through frame apertures 32, and provide lateral stability for the pawl.
  • Indent 52 accepts leaf spring 28 which provides a downward bias to the pawl.
  • pawl lever 13 preferably includes lever arms 60, lever feet 61, pawl blocks 62, and lever shoulders 63.
  • each pawl lever assembly includes two of each component, so that a dual lever construction is provided.
  • Lever arms 60 preferably include an upper end portion 68 which is somewhat wider than the remainder of the arm to assure that the lever arm is engaged by pivoting means 14. Further, it is preferred that the lever arms be bent slightly forward near their upper end portions 68, so that the ends of the lever arms contact pivoting means 14 when said means engages the arm. When the end of the lever arm contacts and is moved by the pivoting means, the effective length of the lever arm is at a maximum, and the force required to pivot the lever arm is reduced.
  • lever arms are bent slightly forward, it is to be appreciated that the upper end portions 68 of levers 60 may alternatively be coplanar with the levers to engage the rearward facing contact surface of means 103, thereby causing the pawl to pivot as means 103 is moved rearwardly.
  • the lever arms may include such bends and curves as are required to enable the levers to fit comfortably inside the buckle assembly.
  • Lever shoulders 63 are received in frame ears 17, and extend somewhat through, and rest on, said ears. Thus, the lower surfaces of frame ears 17 provide a fulcrum on which the lever assembly may pivot.
  • Pawl blocks 62 may include indents 65 to engage the pawl in the event that the pawl is inadvertently released.
  • Lever feet 61 are formed to underlie and lift the pawl from the aperture when lever arms 60 are pivoted on their fulcrum.
  • the lever feet are positioned within and engage side indents 53 of the pawl, so that the lever feet lift the pawl when the lever arms are pivoted downward. Note that the lever feet are not fixedly attached to the pawl, but rest securely between the pawl and the upper frame member 20 when the pawl is in its lowered position.
  • FIGS. 8 and 9 show a single-button assembly according to one preferred end release button embodiment.
  • Button assembly 80 includes means 81 to pivot the lever arms downward, button 82, button ramps 83, and channels 84 to slidably secure the button assembly to the frame. Channels 84 engage the laterally extending edges 41 of frame member 20, so that the button assembly may slide freely along the forward portion of the frame.
  • Button assembly 80 may further include upper wall 90 and side walls 91 to connect and secure the various button components in their respective positions.
  • means 81 to pivot the lever arms downward are preferably attached to upper button wall 90.
  • a helical spring may be secured to the button assembly by attaching it to knob 89 on the upper wall.
  • the buckle of the present invention provides dual means for lifting a pawl to receive and/or release an apertured tongue.
  • end button 82 When end button 82 is pushed in the direction of arrow A in FIG. 10, means 14 engages pawl levers 13, pivoting the ends of said levers downward.
  • Lever feet 61 which protrude under the pawl, lift the pawl upward as the lever pivots on its fulcrum.
  • button ramps 83 slide under pawl shoulders 55 as the button is pushed inward, and assist in raising the pawl.
  • the ramps are positioned so that the levers engage the pawl first, so that the levers begin lifting the pawl upward shortly before the ramps begin to work.
  • the button assembly may include two buttons--one preferably an end button substantially as described above, and the other a top button which may cooperate with the end button.
  • dual button assembly 100 includes an end button 101, a top button 102, and means 103 to pivot the lever arms downward.
  • channels 105 are included so that the button assembly can be slidably retained on the frame.
  • button ramps 109 may be included, and are preferably positioned to lift the pawl upward in cooperation with the levers.
  • Means to allow the top button to be pivoted downward are also preferably included.
  • said means comprises a hook 108, extending downwardly from upper wall 107 of end button 101, to retain an outwardly extending arm 106 attached to top button 102.
  • Arm 106 is pivotably received in hook 108, so that top button 102 may pivot downwardly to cause means 103 to engage the lever arms.
  • top button 102 and means 103 to pivot the lever arms downward are joined as one piece. Accordingly, when top button 102 is depressed, means 103 acts to pivot the levers on their fulcrum. Alternatively, when end button 101 is pushed, means 103 is also moved.
  • the buckle housing may further include a ramped portion 110 directly behind and adjacent to the top button 102, to depress the top button when end button 101 is pushed into the housing. Ramped portion 110 extends downwardly and rearwardly from the button housing, and serves to cause means 103 to move both downward and back when end button 101 is pushed.
  • the side walls of the housing may include ramps to guide the push-button downwardly as the button is depressed.
  • Push button 102 may be returned to its upward position by the force exerted by lever arms 13 on means 103 as the pawl is forced downward by leaf spring 28; however, the top button assembly preferably includes an additional wire spring 112 to bias the top button to its upward position.
  • Preferred spring 112 is a wound wire spring mounted to and extending from end button 101, to normally urge top button 102 to its upward position.
  • means 103 causes the lever arms to pivot on their fulcrum, lifting lever feet 61 and raising the pawl. It is still preferred to position the ramps so that they do not engage the pawl until the levers have initiated the lifting action.
  • the operation of the present invention does not depend upon any particular orientation of the complete buckle assembly.
  • the terms “upward” and “downward” have been used in the description of the preferred embodiment, those terms are illustrative of the operation in standard, preferred configurations.
  • the entire assembly could be inverted so that the "top” button was located on the bottom without adversely affecting the operation of the invention.
  • the pawl and lever arm portions could be inverted while leaving the buttons in their preferred locations. In either of these inverted configurations the pawl would be biased upward to engage the tongue aperture, and would be pulled downward by the lever arms to disengage the pawl.
  • the buckle of the present invention requires less force to lift the pawl from its aperture than is required by traditional, ramped designs. This is because the levers are more mechanically efficient than ramps which must expend significant energy overcoming the frictional forces between the ramp and the pawl. It is further to be appreciated that the force required to lift the pawl with the present invention depends, in part, on the length of the lever arm. The longer the effective length of the lever arm, the less force is required to move a given load.
  • the buckle of the present invention provides a buckle which is more resistant to wear, and therefore more consistent in operation over the life of the buckle.
  • the buckle of the present invention is resistant to developing rough spots or hitches which may inhibit the smooth and easy operation of the buckle.
  • the friction on the button ramps is a significant cause of ramp wear, and accordingly a significant cause of inconsistent operation over time. Because the pawl levers of the present invention assist in lifting the pawl from the aperture, wear on the button ramps is reduced, and the smoothness and consistency of the buckle's operation over time is enhanced.
EP93103921A 1992-04-23 1993-03-11 Extrémité de désaccouplement de boucle avec un linguet pivotant de dégagement Withdrawn EP0566856A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US872493 1986-06-10
US87249392A 1992-04-23 1992-04-23

Publications (1)

Publication Number Publication Date
EP0566856A1 true EP0566856A1 (fr) 1993-10-27

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EP (1) EP0566856A1 (fr)
CA (1) CA2091526A1 (fr)
MX (1) MX9302209A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7918001B2 (en) 2008-03-31 2011-04-05 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8220118B2 (en) 2008-03-31 2012-07-17 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8646158B2 (en) 2008-03-31 2014-02-11 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8713765B2 (en) 2008-03-31 2014-05-06 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US9022483B2 (en) 2012-06-07 2015-05-05 Shield Restraint Systems, Inc. Seatbelt buckle tongue assembly
US9358914B2 (en) 2014-06-05 2016-06-07 Amsafe, Inc. Seatbelt anchor systems for aircraft and other vehicles, and associated methods of manufacture and use
US9718427B2 (en) 2013-07-19 2017-08-01 Shield Restraint Sytems, Inc. Latch device and anchor with swivel coupling

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US7263750B2 (en) 2005-06-09 2007-09-04 Amsafe, Inc. Buckle assembly having single release for multiple belt connectors
US8303043B2 (en) 2008-09-29 2012-11-06 Amsafe, Inc. (Phoenix Group) Tensioning apparatuses for occupant restraint systems and associated systems and methods
US8469401B2 (en) 2009-02-23 2013-06-25 Amsafe, Inc. Seat harness pretensioner
CA2719846A1 (fr) 2009-11-02 2011-05-02 Amsafe Commercial Products, Inc. Dispositifs permettant de regler la tension des ceintures de sieges et autres bandes de dispositifs de contention, et methodes associees
WO2011056989A1 (fr) 2009-11-04 2011-05-12 Amsafe Commercial Products, Inc. Composants de boucle de système de retenue présentant des surfaces tactiles et procédés associés d'utilisation et de fabrication
US8627554B1 (en) 2010-05-03 2014-01-14 Amsafe, Inc. (Phoenix Group) Buckle assemblies with swivel and dual release features and associated methods of use and manufacture
US8777323B2 (en) 2010-07-20 2014-07-15 Amsafe, Inc. Restraint harnesses and associated methods of use and manufacture
USD655223S1 (en) 2010-09-15 2012-03-06 Amsafe Commercial Products, Inc. Buckle assembly
USD661619S1 (en) 2010-09-15 2012-06-12 Amsafe Commercial Products, Inc. Buckle assembly
US9277788B2 (en) 2013-02-19 2016-03-08 Amsafe, Inc. Dual release buckle assemblies and associated systems and methods
EP2958453A4 (fr) 2013-02-19 2016-07-27 Amsafe Inc Ensembles boucles à leviers de blocage à soulèvement, et procédés et systèmes associés
WO2016100566A1 (fr) 2014-12-16 2016-06-23 Shield Restraint Systems, Inc. Dispositifs de réglage de bande pour l'utilisation avec des systèmes de maintien et procédés associés d'utilisation et de fabrication
CN108289531A (zh) 2015-10-02 2018-07-17 谢尔德约束系统公司 用于个人约束系统的负载指示器以及相关联的系统和方法
US10604259B2 (en) 2016-01-20 2020-03-31 Amsafe, Inc. Occupant restraint systems having extending restraints, and associated systems and methods
US9814282B2 (en) 2016-02-02 2017-11-14 Shield Restraint Systems, Inc. Harsh environment buckle assemblies and associated systems and methods
WO2018148221A1 (fr) 2017-02-07 2018-08-16 Shield Restraint Systems, Inc. Dispositif de réglage de bande

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433313A1 (fr) * 1961-10-04 1980-03-14 Kangol Magnet Ltd Boucle de fermeture de ceinture de securite
EP0083752A2 (fr) * 1982-01-13 1983-07-20 Autoflug Gmbh & Co Fahrzeugtechnik Boucle pour ceintures de sécurité
EP0252403A1 (fr) * 1986-07-07 1988-01-13 Van Riesen & Co. Boucle pour système de ceinture de sécurité
EP0342089A1 (fr) * 1988-05-06 1989-11-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Boucle perfectionnée simplifiée pour ceinture de sécurité
EP0402839A2 (fr) * 1989-06-14 1990-12-19 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Dispositif à boucler
EP0404089A1 (fr) * 1989-06-23 1990-12-27 Van Riesen & Co. Boucle pour un système de ceinture de sécurité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433313A1 (fr) * 1961-10-04 1980-03-14 Kangol Magnet Ltd Boucle de fermeture de ceinture de securite
EP0083752A2 (fr) * 1982-01-13 1983-07-20 Autoflug Gmbh & Co Fahrzeugtechnik Boucle pour ceintures de sécurité
EP0252403A1 (fr) * 1986-07-07 1988-01-13 Van Riesen & Co. Boucle pour système de ceinture de sécurité
EP0342089A1 (fr) * 1988-05-06 1989-11-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Boucle perfectionnée simplifiée pour ceinture de sécurité
EP0402839A2 (fr) * 1989-06-14 1990-12-19 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Dispositif à boucler
EP0404089A1 (fr) * 1989-06-23 1990-12-27 Van Riesen & Co. Boucle pour un système de ceinture de sécurité

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7918001B2 (en) 2008-03-31 2011-04-05 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8220118B2 (en) 2008-03-31 2012-07-17 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8291555B2 (en) 2008-03-31 2012-10-23 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8646158B2 (en) 2008-03-31 2014-02-11 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US8713765B2 (en) 2008-03-31 2014-05-06 Amsafe Commercial Products, Inc. Multi-pivot latch assemblies
US9022483B2 (en) 2012-06-07 2015-05-05 Shield Restraint Systems, Inc. Seatbelt buckle tongue assembly
US9718427B2 (en) 2013-07-19 2017-08-01 Shield Restraint Sytems, Inc. Latch device and anchor with swivel coupling
US9358914B2 (en) 2014-06-05 2016-06-07 Amsafe, Inc. Seatbelt anchor systems for aircraft and other vehicles, and associated methods of manufacture and use

Also Published As

Publication number Publication date
MX9302209A (es) 1993-10-01
CA2091526A1 (fr) 1993-10-24

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