WO2022152650A1 - Straffvorrichtung für eine sicherheitsgurtkomponente - Google Patents
Straffvorrichtung für eine sicherheitsgurtkomponente Download PDFInfo
- Publication number
- WO2022152650A1 WO2022152650A1 PCT/EP2022/050337 EP2022050337W WO2022152650A1 WO 2022152650 A1 WO2022152650 A1 WO 2022152650A1 EP 2022050337 W EP2022050337 W EP 2022050337W WO 2022152650 A1 WO2022152650 A1 WO 2022152650A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide block
- tightening device
- piston
- traction cable
- resistance element
- Prior art date
Links
- 238000013016 damping Methods 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1952—Transmission of tensioning power by cable; Return motion locking means therefor
-
- 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
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R22/1955—Linear actuators
Definitions
- the present invention relates to a tightening device for a seat belt component, with a gas generator for generating a compressed gas, a piston which can be driven by the compressed gas, a traction cable connected to the piston and which can be connected to a seat belt component to be set in a tightening movement a tensioner tube for receiving and guiding the piston and a guide block forming a cable guide, in which a receptacle accommodating the gas generator and a pressure chamber fluidically connected to the receptacle are formed, the guide block being connected to the tensioner tube and the traction cable runs straight through the pressure chamber in a piston movement direction from the tensioner tube.
- the object of the present invention is therefore to at least partially eliminate the disadvantages described with reference to the prior art and in particular to provide a tightening device with which flame escape is prevented even during a no-load tightening process.
- the guide block is connected in particular to the tensioner tube and is in particular designed in such a way that the traction cable can be pulled out of the tensioner tube in a straight line in a piston movement direction through the pressure chamber.
- the guide block can be designed in such a way that the traction cable exits the guide block either transversely to the direction of piston movement or exits the guide block in parallel alignment or offset parallel to the rectilinear direction of piston movement.
- the guide block forms a linear guide adjoining the pressure chamber, which is designed in such a way that the traction cable can be guided out of the guide block parallel to the piston movement direction on the side opposite the tensioner tube.
- At least one resistance element described further below, can be used in the linear guide, which counteracts an unintentional movement of the traction cable.
- the guide block generally has an opening that is preferably circular and/or runs in particular transversely to the direction of extension of the cable, by means of which the tightening device can be fastened to the motor vehicle.
- a fastener such as a particularly prestressed screw, possibly with a collar or a bolt
- a bushing can be inserted into the opening in the guide block, through which the fastening means (screw or bolt) is guided.
- the tightening device can have at least one damping element which, in the case of a load-free tightening movement, at least partially absorbs the kinetic energy of the seat belt component.
- the seat belt component can be attached directly or by means of an attachment element, in particular to one end of the traction cable. If the seat belt component itself or the fastening element hits another element of the tensioning device during a load-free tensioning process (i.e. in which the seat belt component is accelerated (almost) without any counteracting force after the gas generator has been triggered), it is intended that the Damping element is designed and arranged in such a way that the kinetic energy of the seat belt component is at least partially absorbed by a desired deformation or fracture of the damping element. It is thus possible to prevent the area of the guide block that forms the pressure chamber from being damaged, so that no flames can escape from the pressure chamber at locations that are not intended for this purpose.
- the projection is formed in particular as a collar surrounding the traction cable.
- the traction cable is guided through the housing at a point at which the housing has an elevation as a projection that extends along the cable.
- This projection completely surrounds the traction cable.
- the projection is at one Point formed at which the seat belt component or its fastening element first comes into contact with the other components of the tensioning device.
- the damping element is realized in particular in that the resistance element protrudes beyond the guide block.
- the resistance element thus extends in particular along the traction cable beyond an outer contour of the guide block. If the seat belt component or its fastening element hits the tensioning device after a load-free tightening process, the resistance element is deformed.
- the tightening device has a resistance element
- an independent invention independent of the solution described above, is seen in the fact that the tightening device has a holder, with the holder fixing the resistance element in the guide block.
- the holder is fastened to the guide block in a form-fitting manner by means of a bushing and that the holder is connected to the bushing by means of a rivet connection.
- the resistance element is brought into an active position by fastening (in particular by riveting) the holder to the guide block, in which the resistance element counteracts an unintentional movement of the traction cable.
- the holder and the resistance element are designed in such a way that before the riveting process, the resistance element does not yet apply sufficient force to prevent unintentional movement of the traction cable, with the resistance element being offset in the direction of the traction cable after the riveting process in such a way that a sufficient force is applied to the towing rope to prevent unintentional movement.
- Figure 1 a partially exploded view of a tightening device
- FIG. 1 the tightening device without housing
- Figure 3 a resistance element of the tightening device
- Figure 4 a holder of the tightening device
- Figure 5 the housing of the tightening device
- Figure 6 the tightening device without housing and holder
- FIG. 7 the guide block of the tightening device with the resistance element before attachment of the holder
- FIG. 8 the view according to FIG. 7 after riveting the holder.
- the tightening device shown in an exploded view in FIG. 1 includes a guide block 1 with a receptacle 2 for a gas generator, not shown.
- a pressure chamber which cannot be seen in the figures, is formed in the guide block 1 and into which the gas generated by the gas generator enters.
- the guide block 1 also forms a linear guide 7 for a traction cable 4 .
- a safety belt component 3 is attached to the pull cable 4 .
- the pull cable 4 guided by the linear guide 7 enters through the pressure chamber into a tensioner tube 5 in which the pull cable 4 is connected to a piston (not visible).
- the piston is accelerated in a piston movement direction 6 in the tensioner tube 5 by triggering the gas generator, as a result of which the traction cable 4 is pulled through the guide block 1 .
- a resistance element 8 is inserted into the linear guide 7 which, in the final assembled state, ensures that the traction cable 4 cannot be unintentionally moved through the guide block 1 .
- the tightening device also includes a holder 11 shown in detail in FIG. 4, which is made of sheet metal and is shaped in a U-shaped cross-section.
- the holder 11 has two projections, each forming a damping element 9.2, which rest on the guide block 1 in the installed position (see in particular FIGS. 2 and 6).
- the bracket 11 has in its two legs holes for connection to a Socket 12 are used.
- the bushing 12 is pushed through an opening in the guide block 1 and through the holes in the bracket 11, the bushing 12 being riveted to the bracket 9 for attachment.
- the holder 11 and the resistance element 8 are designed in such a way that the resistance element 8 protrudes laterally beyond the guide block 1 before the holder 11 is fastened (see FIG. 7).
- the resistance element 8 is then pressed by means of the holder 11 onto the traction cable 4 into an operative position in which the traction cable 4 is secured against unintentional movement (see FIG. 8).
- the tightening device also includes a (flame protection) housing 10 which, in the mounted position, partially surrounds the guide block 1 and the holder 11 .
- the housing 10 (see in particular FIG. 5) has a collar as a damping element 9.1, which protrudes from the housing 10 and surrounds the traction cable 4.
- FIG. 6 also shows that the resistance element 8 projects beyond the guide block 1 with a section that forms a damping element 9.3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22701299.4A EP4277813A1 (de) | 2021-01-12 | 2022-01-10 | Straffvorrichtung für eine sicherheitsgurtkomponente |
CN202280009363.4A CN116710334A (zh) | 2021-01-12 | 2022-01-10 | 用于安全带部件的张紧装置 |
KR1020237026776A KR20230130685A (ko) | 2021-01-12 | 2022-01-10 | 안전 벨트 구성요소를 위한 인장 장치 |
JP2023539082A JP2024506128A (ja) | 2021-01-12 | 2022-01-10 | 安全ベルト構成要素用の張力デバイス |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021100437.3A DE102021100437A1 (de) | 2021-01-12 | 2021-01-12 | Straffvorrichtung für eine Sicherheitsgurtkomponente |
DEDE102021100437.3 | 2021-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022152650A1 true WO2022152650A1 (de) | 2022-07-21 |
Family
ID=80122972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/050337 WO2022152650A1 (de) | 2021-01-12 | 2022-01-10 | Straffvorrichtung für eine sicherheitsgurtkomponente |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4277813A1 (de) |
JP (1) | JP2024506128A (de) |
KR (1) | KR20230130685A (de) |
CN (1) | CN116710334A (de) |
DE (1) | DE102021100437A1 (de) |
WO (1) | WO2022152650A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2337029A (en) * | 1998-05-08 | 1999-11-10 | Breed Automotive Tech | Seat belt pretensioner |
US6250720B1 (en) * | 1996-04-23 | 2001-06-26 | Trw Occupant Restraint Systems Gmbh & Co. Kg | Tensioner for a safety belt |
DE102015111083B4 (de) | 2015-07-09 | 2018-07-26 | Autoliv Development Ab | Straffvorrichtung mit Dichtungsvorrichtung |
WO2021156015A1 (de) * | 2020-02-07 | 2021-08-12 | Autoliv Development Ab | Straffvorrichtung für eine sicherheitsgurtkomponente |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2223061A1 (de) | 1972-05-12 | 1973-11-22 | Volkswagenwerk Ag | Spanneinrichtung fuer rueckhalteeinrichtungen |
DE19546280C2 (de) | 1995-12-12 | 2000-07-27 | Autolive Dev Ab Vargarda | Strammeinrichtung für Sicherheitsgurte mit einer Exzenterverriegelung |
WO2016190046A1 (ja) | 2015-05-26 | 2016-12-01 | オートリブ ディベロップメント エービー | シートベルト装置 |
-
2021
- 2021-01-12 DE DE102021100437.3A patent/DE102021100437A1/de active Pending
-
2022
- 2022-01-10 EP EP22701299.4A patent/EP4277813A1/de active Pending
- 2022-01-10 KR KR1020237026776A patent/KR20230130685A/ko unknown
- 2022-01-10 JP JP2023539082A patent/JP2024506128A/ja active Pending
- 2022-01-10 CN CN202280009363.4A patent/CN116710334A/zh active Pending
- 2022-01-10 WO PCT/EP2022/050337 patent/WO2022152650A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6250720B1 (en) * | 1996-04-23 | 2001-06-26 | Trw Occupant Restraint Systems Gmbh & Co. Kg | Tensioner for a safety belt |
GB2337029A (en) * | 1998-05-08 | 1999-11-10 | Breed Automotive Tech | Seat belt pretensioner |
DE102015111083B4 (de) | 2015-07-09 | 2018-07-26 | Autoliv Development Ab | Straffvorrichtung mit Dichtungsvorrichtung |
WO2021156015A1 (de) * | 2020-02-07 | 2021-08-12 | Autoliv Development Ab | Straffvorrichtung für eine sicherheitsgurtkomponente |
Also Published As
Publication number | Publication date |
---|---|
JP2024506128A (ja) | 2024-02-09 |
KR20230130685A (ko) | 2023-09-12 |
DE102021100437A1 (de) | 2022-07-14 |
CN116710334A (zh) | 2023-09-05 |
EP4277813A1 (de) | 2023-11-22 |
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