WO2024119581A1 - Dispositif miniature d'absorption d'énergie au niveau de la taille et boucle de ceinture de sécurité - Google Patents

Dispositif miniature d'absorption d'énergie au niveau de la taille et boucle de ceinture de sécurité Download PDF

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Publication number
WO2024119581A1
WO2024119581A1 PCT/CN2023/070228 CN2023070228W WO2024119581A1 WO 2024119581 A1 WO2024119581 A1 WO 2024119581A1 CN 2023070228 W CN2023070228 W CN 2023070228W WO 2024119581 A1 WO2024119581 A1 WO 2024119581A1
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WO
WIPO (PCT)
Prior art keywords
wire rope
steel wire
energy absorption
absorption device
fixed
Prior art date
Application number
PCT/CN2023/070228
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English (en)
Chinese (zh)
Inventor
晏辉成
Original Assignee
上海卜瑞科技有限公司
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 上海卜瑞科技有限公司 filed Critical 上海卜瑞科技有限公司
Publication of WO2024119581A1 publication Critical patent/WO2024119581A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices

Definitions

  • the invention belongs to the technical field of automobile passive safety devices, and more specifically relates to a miniature waist energy absorption device and a safety belt buckle.
  • Seat belts are a very important passive safety system in modern automobile safety systems, and seat belt buckles are key components in seat belt systems.
  • the commonly used seat belt buckles will generate a large waist force on the occupants. This force will change with the rigidity of the vehicle body, and the change range is large. Excessive waist force will cause great harm to the occupants in the car.
  • the "A seat belt structure and seat belt buckle with waist load buffering function" disclosed in application number 202110997667.3 is installed on the seat of a vehicle and connected to the seat belt buckle.
  • the seat belt buckle is connected to a seat belt, and the seat belt buckle has an upper opening and a lower opening.
  • the seat belt enters the interior of the seat belt buckle through the upper opening and is connected to the seat belt buckle. It is characterized in that it includes: a guide assembly; a shock-absorbing end; a buffer component, located between the shock-absorbing end and the guide assembly; a connecting component, one end of which is connected to the shock-absorbing end, and the other end is connected to the seat belt buckle after passing through the guide assembly.
  • the connecting component enters the interior of the seat belt buckle through the lower opening, and the buffer component is sleeved on the connecting component, and outputs a force limit by generating a tension value generated by the inner wall of the slender tube driven by the force of the wire rope.
  • a Lock Force Limiting Device disclosed in 202111566421.7, which specifically includes a steel cable and a fixed plate.
  • the steel cable is bent to form a bent end and two ends.
  • the bent end is connected to the lock, and the two ends are movably fixed to the vehicle body through the fixed plate.
  • a bending mechanism is provided on the fixed plate. The bending mechanism causes the bent end and part of the steel cable between the two ends to yield and bend, forming a yield bending portion on the moving path of the steel cable, and a deformation force is generated in the steel cable through a yield bending mechanism, which is converted into a force limiting value of the lock.
  • the "Force-limited Mortise Lock” disclosed in Application No. 201821793790.3 includes a lock head, a connecting rope and a force-limiting assembly, one end of the connecting rope is connected to the lock head, and the other end is installed on the force-limiting assembly.
  • the force-limiting assembly includes: a fixed plate, which is U-shaped, and each of the two side plates is provided with a through hole; a rotating cylinder, the two ends of which are respectively installed in the two through holes, and a toothed structure is provided on the inner wall of the end close to the lock head, and the connecting rope is wound on the outer wall of the end, and the free end of the connecting rope is fixed to the cylinder wall; a force-limiting rod, which is installed in the rotating cylinder, has a toothed structure at both ends, and one end of which is meshed with the toothed structure in the rotating cylinder; a side cover, which corresponds to the other end of the force-limiting rod, is fixedly installed on the outer wall of the side plate of the fixed plate, and is provided with internal teeth meshing with the force-limiting rod.
  • the "Force Limiting Energy Absorption Device for Seat Belts” disclosed in application number 201410089494.1 includes an energy absorption mechanism, and the two connecting ends of the energy absorption mechanism are respectively connected to the vehicle body and the lock or reel.
  • the structure of the energy absorption mechanism is: an inner cavity of a shell stores a steel wire rope, the rear end of the shell forms a connecting end of the energy absorption mechanism, and the front end of the shell has an outlet for the steel wire rope, and on the inner side of the outlet there is a force limiting mold core fixedly connected to the shell and clamping the steel wire rope, and the end of the steel wire rope extending out of the shell constitutes the other connecting end of the energy absorption mechanism.
  • the present invention provides a structure that is compact, occupies little space, does not require changing the original connection structure with the vehicle body, and is symmetrically arranged on both sides of the bracket plate, has balanced force, and has high reliability.
  • a miniature waist energy absorption device comprising a bracket plate and a steel wire rope
  • the bracket plate is provided with a positioning hole
  • a torsion bar is provided in the positioning hole
  • both ends of the torsion bar are connected to rollers
  • the top end of the steel wire rope is used to be fixed to the locking head
  • the bottom end of the steel wire rope is wound and fixed on two rollers
  • the winding directions of the steel wire ropes on the two rollers are opposite.
  • a shaft sleeve is fixed in the positioning hole, and the torsion bar passes through the shaft sleeve and is rotatably connected to the shaft sleeve.
  • roller is sleeved on the end of the shaft sleeve and is rotatably connected to the shaft sleeve.
  • the end of the torsion bar is fixed to the roller by riveting.
  • the end of the torsion bar is connected to the roller via a spline.
  • a guide groove is arranged on the circumferential surface of the roller, the wire rope is located in the guide groove, and a stop block is correspondingly arranged on the roller, and the end of the wire rope is fixed on the stop block.
  • two guide holes are arranged on the top of the bracket plate, and the two ends of the steel wire rope pass through the two guide holes and are connected to the rollers respectively.
  • the steel wire rope is provided as one, and the steel wire rope is folded in half in the middle and fixed by a rivet buckle.
  • a guide frame is arranged above the bracket plate, a guide wheel is arranged in the guide frame, the top end of the wire rope passes through the guide frame, and the guide frame is fixed to the bracket plate.
  • a safety belt buckle comprising a micro waist energy absorbing device also comprises a buckle head, wherein a fixing pin is arranged in the buckle head and the fixing pin is connected to the top of a steel wire rope.
  • the beneficial effects of the present invention are: by symmetrically arranging rollers on both sides of the bracket plate, when the seat belt is retracted, they can rotate synchronously and the force is balanced. It does not need to occupy additional space in the vehicle, has a small size, and the bracket plate can be the same as the existing one, without changing its installation structure with the vehicle body.
  • FIG1 is a three-dimensional structural diagram of a safety belt buckle with a miniature waist energy absorbing device according to the present invention
  • FIG2 is a three-dimensional structural diagram of the miniature waist energy absorption device of the present invention (the support plate is L-shaped);
  • FIG3 is a second three-dimensional structural diagram of the miniature waist energy absorption device of the present invention (the support plate is L-shaped);
  • FIG4 is a three-dimensional structural diagram of the support plate, the shaft sleeve and the torsion bar in the present invention.
  • FIG5 is a three-dimensional structural diagram of a torsion bar in the present invention.
  • FIG6 is a three-dimensional structural diagram of the roller, the bushing and the torsion bar in the present invention.
  • FIG7 is a three-dimensional structural diagram of the guide frame and the wire rope
  • FIG8 is a three-dimensional structural diagram of a guide frame
  • FIG9 is a three-dimensional structural diagram of the miniature waist energy absorption device of the present invention (the support plate is in a straight line shape);
  • FIG10 is a front view of FIG9
  • Fig. 11 is a cross-sectional view of the section A-A in Fig. 10;
  • FIG12 is a cross-sectional view taken along line B-B in FIG10 .
  • Figure numerals 1. locking head; 2. steel wire rope; 21. fixing hole; 3. bracket plate; 31. mounting hole; 32. guide hole; 4. rivet; 5. bushing; 6. roller; 61. guide groove; 62. stop block; 7. torsion bar; 71. spline; 8. guide frame; 81. guide wheel; 82. hook.
  • first and second are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of “first” and “second” features can explicitly or implicitly include one or more of the features. In the description of the present invention, “several” and “a number” mean two or more, unless otherwise clearly and specifically defined.
  • a miniature waist energy absorption device includes a bracket plate 3 and a steel wire rope 2.
  • the bracket plate 3 is provided with a positioning hole.
  • a torsion bar 7 is provided in the positioning hole. Both ends of the torsion bar 7 are connected to rollers 6.
  • the steel wire rope 2 is folded in the middle. Both ends of the steel wire rope 2 are respectively wound and fixed on two rollers 6. The winding directions of the steel wire rope 2 on the two rollers 6 are opposite.
  • a mounting hole 31 may be further provided on the bracket plate, and the mounting hole 31 is used for connection with the vehicle body.
  • the bracket plate 3 may also be connected and fixed with the vehicle body by other means (such as welding), and it can be arranged as required.
  • a fixing hole 21 is formed at the folded top end thereof.
  • This fixing hole 21 is used to connect with the buckle head 1 of the safety belt.
  • the buckle head 1 is provided with a fixing pin.
  • the fixing pin passes through the fixing hole 21 to complete the connection and fixation of the buckle head 1 and the steel wire rope 2, and finally presents the state shown in Figure 1.
  • two steel wire ropes 2 may be provided, and the top ends of the two steel wire ropes (one end of which is usually located at the top position) are respectively connected to the locking heads, or the top ends of the two steel wire ropes are first connected and then connected to the locking heads.
  • the number of turns of the wire rope 2 around the roller 6 can be determined as needed.
  • a stop block 62 is provided on the roller 6, and the end of the wire rope 2 is riveted and fixed on the stop block 62.
  • the wire rope 2 safety belt
  • the wire rope 2 will be pulled upward, and the wire rope 2 drives the roller 6 to rotate, and the two rollers 6 rotate in opposite directions, thereby driving the torsion bar 7 to twist, and the twisting of the torsion bar 7 provides a certain resistance.
  • a shaft sleeve 5 is preferably fixed in the positioning hole, and the torsion bar 7 passes through the shaft sleeve 5 and is rotatably connected to the shaft sleeve 5 .
  • the sleeve 5 can firstly enable the torsion bar 7 to rotate smoothly, and can also prevent the torsion bar 7 from deflecting when subjected to torsion, that is, the sleeve 5 is used to increase the contact area of the torsion bar 7 in the axial direction, and maintain the stability of the torsion bar 7 .
  • the roller 6 is preferably sleeved on the end of the shaft sleeve 5 and is rotatably connected to the shaft sleeve 5 .
  • the axial portion of the roller 6 is sleeved on the sleeve 5, and the other portion is fixed to the torsion bar 7, so that the roller 6 can also be limited by the sleeve 5 to prevent the roller 6 from falling off.
  • the sleeve 5 and the roller 6 can be connected by other structures such as bearings or annular limiting grooves and limiting protrusions, so that the roller 6 and the sleeve 5 can rotate smoothly and be relatively fixed in the axial direction.
  • the end of the torsion bar 7 is fixed to the roller 6 by riveting. In this way, when the torsion bar 7 and the roller 6 are fixed, the length of the steel wire rope 2 wound on the roller 6 is determined and cannot be adjusted later.
  • the end of the torsion bar 7 is connected to the roller 6 via a spline 71 .
  • splines 71 are provided on the torsion bar 7 and the roller 6, and the two are meshed with each other. In this way, the torsion bar 7 and the roller 6 can be adjusted according to the relative angle between the two when they are fixed to control the length of the wire rope 2 wrapped around the roller 6, so that the effective distance of the wire rope 2 can be controlled.
  • a guide groove 61 is preferably provided on the circumferential surface of the roller 6 , and the wire rope 2 is located in the guide groove 61 .
  • the guide groove 61 is an arc-shaped groove to limit the wire rope 2 and prevent the wire rope 2 from escaping from the roller 6 .
  • the top end of the bracket plate 3 is preferably provided with two guide holes 32 , and both ends of the steel wire rope 2 pass through the two guide holes 32 and are connected to the roller 6 .
  • the guide hole 32 can be formed by punching a hole in the top of the bracket plate 3 and then bending it, and is used to position the steel wire rope 2.
  • the steel wire rope 2 is folded in the middle and fixed by a rivet buckle 4 , and the rivet buckle 4 is still at a certain distance from the top of the steel wire rope 2 , so that the portion above the rivet buckle 4 can form a fixing hole 21 .
  • a guide frame 8 is disposed above the bracket plate 3 , a guide wheel 81 is disposed inside the guide frame 8 , the top end of the steel wire rope 2 passes through the guide frame 8 , and the guide frame 8 is fixed to the bracket plate 3 .
  • the wire rope 2 is restricted by the guide frame 8 to prevent it from loosening, and the direction of the pulling force can be changed by setting the guide wheel 81.
  • a hook 82 is provided on the guide frame 8, and the hook 82 can be fixed to the vehicle body to prevent the guide frame 8 from rotating, thereby ensuring that the length of the wire rope 2 wound on the two rollers 6 is moderate and consistent.
  • the torsion bar 7 can be set according to the torque required to be generated. Generally speaking, torsion bars 7 with different diameters can obtain different output torque values. Combined with the spline 71 connected to the roller 6, the output length of the wire rope 2 can be adjusted, and the torque value can also be adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

La présente invention concerne un dispositif miniature d'absorption d'énergie au niveau de la taille, comprenant une plaque de support (3) et un câble d'acier (2), la plaque de support (3) comportant un trou de positionnement ; une barre de torsion (7) étant disposée dans le trou de positionnement ; un rouleau (6) étant relié à chacune de deux extrémités de la barre de torsion (7) ; et une extrémité supérieure du câble d'acier (2) étant configurée pour être fixée à une tête de boucle (1), une extrémité inférieure du câble d'acier (2) étant enroulée autour des deux rouleaux (6) et fixée à ceux-ci, et le câble d'acier (2) étant enroulé autour des deux rouleaux (6) dans des sens opposés. Le dispositif a une structure compacte et occupe un petit espace, il n'est pas nécessaire de modifier une structure d'origine pour relier le dispositif à une carrosserie de véhicule, et en outre, le dispositif est agencé symétriquement sur deux côtés de la plaque de support (3), de telle sorte que le dispositif est soumis à des forces équilibrées, ce qui lui confère une grande fiabilité.
PCT/CN2023/070228 2022-12-09 2023-01-03 Dispositif miniature d'absorption d'énergie au niveau de la taille et boucle de ceinture de sécurité WO2024119581A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211585076 2022-12-09
CN202211585076.6 2022-12-09

Publications (1)

Publication Number Publication Date
WO2024119581A1 true WO2024119581A1 (fr) 2024-06-13

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Application Number Title Priority Date Filing Date
PCT/CN2023/070228 WO2024119581A1 (fr) 2022-12-09 2023-01-03 Dispositif miniature d'absorption d'énergie au niveau de la taille et boucle de ceinture de sécurité

Country Status (2)

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CN (1) CN116001723A (fr)
WO (1) WO2024119581A1 (fr)

Citations (6)

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DE102005060913A1 (de) * 2005-12-20 2007-06-28 GM Global Technology Operations, Inc., Detroit Gurtkraftbegrenzungseinrichtung für Fahrzeugsicherheitsgurte
CN209366090U (zh) * 2018-11-01 2019-09-10 天合汽车零部件（上海）有限公司 一种限力型插锁
US20190351866A1 (en) * 2016-12-16 2019-11-21 Trw Automotive Gmbh Force limiter
CN113602230A (zh) * 2021-08-27 2021-11-05 玉环加鑫汽车配件有限公司 一种具有缓冲腰部载荷功能的安全带结构及安全带锁扣
CN114304820A (zh) * 2021-12-20 2022-04-12 宁波均胜汽车安全系统有限公司 一种锁扣限力装置
CN115042739A (zh) * 2022-06-08 2022-09-13 上汽大众汽车有限公司 一种安全带能量吸收装置、安全带及车辆

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US6302346B1 (en) * 2000-01-14 2001-10-16 Trw Vehicle Safety Systems Inc. Seat belt webbing energy management device
KR100968829B1 (ko) * 2008-08-29 2010-07-08 현대자동차주식회사 시트벨트 프리텐셔너
JP2013018460A (ja) * 2011-07-14 2013-01-31 Toyota Motor Corp 自動車用シートベルト装置
DE102011116536A1 (de) * 2011-10-20 2012-05-03 Daimler Ag Gurtschlossanordnung für einen Sicherheitsgurt eines Fahrzeuges
DE102013001375B4 (de) * 2013-01-28 2021-05-20 Autoliv Development Ab Gurtschlosskraftreduzierungsvorrichtung, Verfahren zum Reduzieren einer im Lastfall auf ein Gurtschloss einwirkenden Kraft sowie eine Verwendung
GB2522335A (en) * 2014-12-16 2015-07-22 Daimler Ag Load limiting device for a seat belt of a vehicle
DE102017210465A1 (de) * 2017-06-22 2018-12-27 Volkswagen Aktiengesellschaft Sicherheitsgurteinrichtung für ein Fahrzeug
CN207773087U (zh) * 2018-02-01 2018-08-28 台州兴岛机械制造有限公司 一种扭力杆
DE102018221564B4 (de) * 2018-12-12 2023-08-17 Autoliv Development Ab Gurtaufroller mit einer mehrstufigen Kraftbegrenzungseinrichtung
CN212766106U (zh) * 2020-06-04 2021-03-23 北京汽车股份有限公司 安全带的锁扣组件和车辆

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005060913A1 (de) * 2005-12-20 2007-06-28 GM Global Technology Operations, Inc., Detroit Gurtkraftbegrenzungseinrichtung für Fahrzeugsicherheitsgurte
US20190351866A1 (en) * 2016-12-16 2019-11-21 Trw Automotive Gmbh Force limiter
CN209366090U (zh) * 2018-11-01 2019-09-10 天合汽车零部件（上海）有限公司 一种限力型插锁
CN113602230A (zh) * 2021-08-27 2021-11-05 玉环加鑫汽车配件有限公司 一种具有缓冲腰部载荷功能的安全带结构及安全带锁扣
CN114304820A (zh) * 2021-12-20 2022-04-12 宁波均胜汽车安全系统有限公司 一种锁扣限力装置
CN115042739A (zh) * 2022-06-08 2022-09-13 上汽大众汽车有限公司 一种安全带能量吸收装置、安全带及车辆

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