WO2012152424A1 - Gurtaufroller mit kindersicherung - Google Patents
Gurtaufroller mit kindersicherung Download PDFInfo
- Publication number
- WO2012152424A1 WO2012152424A1 PCT/EP2012/001947 EP2012001947W WO2012152424A1 WO 2012152424 A1 WO2012152424 A1 WO 2012152424A1 EP 2012001947 W EP2012001947 W EP 2012001947W WO 2012152424 A1 WO2012152424 A1 WO 2012152424A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- blocking
- guide
- control
- belt retractor
- 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.)
- Ceased
Links
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
- B60R22/34—Belt retractors, e.g. reels
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
- B60R22/38—Belt retractors, e.g. reels self-locking in an emergency responsive only to belt movement
-
- 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
- B60R22/34—Belt retractors, e.g. reels
- B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
- B60R22/415—Belt retractors, e.g. reels self-locking in an emergency with additional means allowing a permanent locking of the retractor during the wearing of the belt
Definitions
- the invention relates to a belt retractor for a vehicle seat belt, comprising a frame which is provided with a plurality of blocking teeth, a belt spool which is rotatably mounted in the frame and has a locking toothing, and a control mechanism with which the belt spool from a starting position, in which it can rotate freely in the frame, can be moved to a blocking position in which their blocking teeth engage the blocking teeth of the frame.
- a control mechanism is provided which ensures that the toothing of the belt reel is correctly positioned in the blocking teeth of the frame, so that engagement of the teeth is made in the blocking teeth before acting on the belt reel high loads.
- the control mechanism includes the control lever, which is usually provided with an internal toothing, in which a control pawl can engage, which is arranged on an end face of the belt reel.
- the control pawl can be triggered either belt-sensitive or vehicle-sensitive, so that it engages in the internal toothing and rotatably coupled to the belt reel with the control lever. If a tensile force is exerted by the belt on the belt reel in this state, this causes the control lever pivots together with the belt reel to the pivot point at which the control lever attached to the frame
- CONFIRMATION COPY is, and the belt spool einêtt in the blocking teeth on the frame.
- the arrangement of the teeth of the internal teeth on the control lever relative to the blocking teeth ensures that the belt reel is always guided in the correct position with their teeth in the blocking teeth, so that the impact of the tooth tips of the toothing of the belt reel is avoided on the tooth tips of the blocking teeth.
- the object of the invention is to develop a belt retractor of the type mentioned in such a way that despite the displacement of the belt reel, which is necessary for blocking, a parental control function can be realized.
- the control mechanism has a locking lever which is adjustable between a release position and a locking position in which he locks a rotation of the belt reel relative to the control mechanism, so that the belt reel by a in the Webbing acting tensile force can be moved to the blocking position.
- the invention is based on the idea of integrating the locking lever necessary for the selective blocking of the belt reel into the control mechanism so that it moves in particular when the belt reel is displaced from its initial position into the blocking position for the purpose of blocking.
- control mechanism has a control lever and that the locking lever is pivotally mounted on the control lever. This ensures that when relocating the belt reel from the Starting position in the blocking position no relative movement between the belt reel and the locking lever occurs.
- control mechanism has a control disk, which is coupled to the belt reel and cooperates with the locking lever.
- a control disk can be switched in a technically simple manner and with a small footprint of the control lever between the release position and the blocking position.
- control disk is coupled by means of a reduction gear with the belt reel. This makes it possible to turn on or off the child-lock function in response to the rotation of the belt reel, especially when the entire webbing has been pulled off the belt reel.
- the reduction gear may include a step gear driven by a pinion coupled to the belt spool and engaged with internal teeth provided on the control disk.
- control disk has two concentric guide grooves, with which a guide element of the locking lever can cooperate, wherein one of the guide grooves defines the release position of the locking lever and the other the blocking position.
- a switching mechanism which can transfer the guide element of the locking lever from one guide groove to the other.
- the switching mechanism makes it possible, the locking lever depending on the direction of rotation of the control disk and thus also the belt reel so between the locking guide groove and the release guide back and switch on, that at the desired time the parental control function is switched on or off.
- the switching mechanism has an activation element which is assigned to the release guide groove and can transfer the guide element from the release guide groove into the locking guide groove when the control disk passes over the guide element in one direction, which causes the webbing to be wound up equivalent. This allows the parental control function to be activated at the desired time.
- the switching mechanism has a deactivation element which transfers the guide element from the locking guide groove into the release guide groove when the guide element has reached the end of the locking guide groove. In this way, the child safety function can be turned off with little effort, for example, when almost the entire webbing is wound up again on the belt reel.
- the activation and / or the deactivation element contains an elastically yielding nose on the control disk. In this way it can be achieved with little effort that the activation and / or deactivation element in one direction of rotation of the belt reel and thus the control disk can be run over by the guide element, in the other direction, however, is effective.
- the guide element of the locking lever is parallel to the pivot axis of the locking lever elastically deflectable. This also makes it possible, with little effort, for the guide element to be able to drive over the switching mechanism in one direction, but to be deflected in the desired direction in the other direction.
- the guide element is mounted on a guide arm which is elastically connected to the locking lever. This allows the locking lever to elastically slip during the winding of the webbing in the manner of a ratchet on the blocking teeth of the belt reel, but to lock in the other direction reliably.
- FIG. 1 shows schematically a belt retractor in an exploded view
- FIG. 2 shows a belt retractor according to the invention in a front view
- FIG. 3 shows a belt retractor according to the invention in a schematic side view
- - Figure 4 is a detail view of the control lever with attached locking lever
- - Figure 5 is a side view of a first embodiment of a control disk with engaging therein locking lever and two views of the locking lever;
- FIG. 6 is a side view of the control disk of Figure 5 and various sectional views.
- FIG. 7 shows, in a view corresponding to that of FIG. 5, a control disk according to a second embodiment and two views of FIG
- FIGS. 1 to 3 show a belt retractor 10 which contains a frame 12 and a belt reel 14.
- the frame 12 has a back part 15 and two side parts 16, wherein each of the two side parts 16 is provided with an opening 18, within which a flange 20 is received, which is provided in each case at an axial end of the belt reel.
- the edge of each opening 18 is provided with a plurality of blocking teeth 22, whose geometry and pitch is matched to a blocking toothing 24 which is formed on each flange of the belt reel 14.
- a control lever 28 is arranged, which is designed in the manner of a cap and with a pivot pin 30 limited pivotally mounted on the corresponding side part 16 of the frame 12.
- the control lever 28 is provided on its inside with an internal toothing 32 (see Figure 4), which is provided for a known per se belt-sensitive blocking of the belt reel.
- Internal toothing 32 may engage a control pawl 33, which may be triggered belt webbing sensitive.
- a sensor 34 is provided which can cooperate with a locking toothing not shown here so that the rotation of the belt reel is prevented and pivots the belt reel in the blocking teeth. This is known in principle, so that this will not be explained further here.
- the belt reel can rotate freely within the openings 18 of the side parts 16 of the frame 12.
- the belt reel is guided within the housing shells 40.
- the control pawl 33 When the control pawl 33 is activated in a belt-sensitive manner, it engages in the internal toothing 32. Then, when a train is applied to the webbing, the belt reel is pivoted together with the control lever 28 about the pivot pin 30.
- the locking teeth 24 engage with the blocking teeth 22 of the frame, so that the belt reel 14 is reliably blocked relative to the frame 12.
- the sensor lever engages via an unillustrated intermediate lever into the locking toothing.
- the belt reel When pulling on the webbing, the belt reel is then pivoted together with the control lever 28 about the pivot pin 30. As a result, the locking teeth 24 engage with the blocking teeth 22 of the frame
- the belt retractor is provided with a child safety function, which is realized on the side of the control lever 28.
- a control disk 50 is mounted, which is rotatable relative to the control lever 28.
- a plurality of abutment 52 and latching hooks 54 are provided which, distributed in the circumferential direction, ensure a circular guide track for the control disk 50 and a fixing in the axial direction.
- the control disk 50 is designed as a ring and has on its inner circumference an internal toothing 56, in which engages a smaller gear 58 which is rotatably connected to a larger gear 60.
- That of the two Gear wheels 58, 60 formed step gear is rotatably received on a bearing pin 62 which is fixedly formed on the control lever 28.
- the larger gear 60 meshes in a pinion 64 which is rotatably connected to the belt reel 14.
- the control disk 50 rotates in the opposite direction to the belt reel 14 and with strong understated speed.
- the reduction is such that the control disk 50 makes less than one revolution when the belt reel is transferred from a fully wound webbing state to a fully webbed state.
- "Fully wound up” or “completely pulled off” here refers to the installed state of the belt retractor in a vehicle.
- the control disk 50 is provided with two guide grooves, namely a release guide groove 70 and a locking guide groove 72.
- the two guide grooves 70, 72 are arranged concentrically, in which case the release guide groove 70 is located outside the locking guide groove 72.
- the blocking guide groove 72 extends here over an angular range of slightly less than 180 ° and merges at its two ends into the release guide groove 70. This extends over a larger angular range than the locking guide groove 72, wherein it is performed circumferentially in the embodiment shown.
- a guide element 74 cooperates, which is designed as a pin on a guide arm 76 which is connected via a bearing portion 78 with a locking lever 80.
- the guide arm 76 is elastically deformable relative to the control lever 80 in the sense that the distance between the ratchet tooth 82 and the guide member 74 can be changed, in particular by elastic material deformation of the guide arm 76th
- a locking tooth 82 is mounted, which can cooperate with the locking teeth 24 of the belt reel 14.
- the bearing portion 78 of the locking lever 80 is mounted on a bearing pin 84 which is fixedly mounted on the control lever 28.
- the child safety function is activated by the locking lever 80 is switched inwardly in the radial direction, so that it goes from the release position shown in the figures in a blocking position in which the ratchet teeth 82 with the locking teeth 24 of Belt reel 14 cooperates.
- the locked position prevents the locking lever 80 that the belt reel can be rotated in the unwinding of the webbing, so that when a train is applied to the webbing in this state, the belt reel is pivoted together with the control lever to the pivot pin 30 until the Belt spool is in the blocking position.
- the blocking gear 24 slips under the ratchet 82 in the manner of a ratchet effect, since the pawl lever 80 is elastically deformable relative to the guide member 74.
- the locking lever 80 is independent of the sensor 34 and its sensor lever and cooperating with this intermediate lever.
- the locking lever is also independent of the control latch 33rd
- the switching between the locking position and the release position is effected by means of a switching mechanism, with which the guide element 74 can be transferred from the release guide groove 70 in the locking guide groove 72, and vice versa.
- the switching mechanism to an activation element 86, which is designed here as an elastically resilient nose, which is arranged in the release guide groove 70 in the region of the transition to the locking guide groove 72.
- the activation element 86 is bevelled in two directions: on the one hand, the surface 88 of the activation element, which is hit by the guide element 74 when the control disk 50 rotates during unwinding of the webbing, rises obliquely from the bottom of the release guide groove 70 upward the activation element 86 deflects elastically downward (with reference to the illustration in FIG.
- the switching mechanism also has a deactivating element 92, which contains on the one hand an elastically deformable deactivation nose 94 whose side surface 96 facing the blocking guide groove 72 is inclined.
- the deactivation element 92 has an inclined Auslenkwand 98, which is arranged at the end of the locking guide groove 72 and leads to the outside to release guide groove 70.
- Both the activation element 86 and the deactivation nose 94 are embodied here in one piece with the control disk 50 in that they are shaped as freed tabs with the control disk 50.
- control disk 50 In the initial position, that is, when fully wound on the belt reel 14 webbing, the control disk 50 is in a position in which the guide member 74 is located approximately in the region of the point A of Figure 6a. If then webbing is withdrawn from the belt reel, the control disk 50 rotates in the direction of the arrow P of Figure 6a, so that the guide element 74 first slides past the deactivation element 92. Due to the configuration of the deactivation nose 94, the guide element 74 follows the release guide groove 70, as inadvertent ingress into the locking guide groove 72 is prevented.
- control disk 50 is further rotated, so that the guide element 74 slips over the activation element 86; due to the inclined surface 88, the activation element 86 is pushed out of the guide groove 70.
- control disk 50 is finally in a position in which the guide member 74 is located approximately at the point V of Figure 6a.
- the control disk 50 rotates in the opposite direction until the guide element 74 strikes the surface 90 of the activation element 86. Since this surface is set obliquely, the guide element is moved radially inwardly, whereby the control lever 80 (based, for example, on Figure 5a) is pivoted radially inwardly into the blocking position. In this position, the ratchet tooth 82 cooperates with the locking teeth 24 such that the belt reel can still be rotated in the winding direction; the teeth of the blocking teeth 24 of the belt reel 14 push the obliquely set on the corresponding side ratchet 82 to the outside, while the guide member 74 is further held in the locking guide groove 72.
- the webbing can be wound until, for example, a child seat is firmly fixed. A webbing take off is not possible. If the child safety function is to be switched off again, the webbing must continue to be wound up on the belt reel, for example, after loosening the tongue and removing the child seat.
- the guide element 74 strikes the deflection surface 98 at the end of the blocking guide groove 72, it is displaced outward in the radial direction, passing over the deactivation nose 94 and entering the release guide groove 70.
- the locking lever 80 is pivoted outwards again into the release position, so that the belt spool can be rotated unhindered in any direction.
- FIG. 7 shows an alternative embodiment of the control disk 50, which differs from the control disk shown in FIG. 6 with regard to the activation element and the deactivation element.
- the activating element 86 and the deactivating element 92 are fixed, but inclined in the same way.
- the elasticity that is necessary for the guide element 74 to be able to drive over the activation element 86 and the deactivation element 92 is achieved in that the guide arm 76 is elastically deformable in the axial direction, relative to the bearing section 78. This allows the guide member 74 to dodge in the axial direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/115,637 US9409545B2 (en) | 2011-05-12 | 2012-05-07 | Belt retractor with a child lock |
| DE112012002053.7T DE112012002053B4 (de) | 2011-05-12 | 2012-05-07 | Gurtaufroller mit Kindersicherung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011101375.3 | 2011-05-12 | ||
| DE102011101375A DE102011101375A1 (de) | 2011-05-12 | 2011-05-12 | Gurtaufroller mit Kindersicherung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012152424A1 true WO2012152424A1 (de) | 2012-11-15 |
Family
ID=46172759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/001947 Ceased WO2012152424A1 (de) | 2011-05-12 | 2012-05-07 | Gurtaufroller mit kindersicherung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9409545B2 (de) |
| DE (2) | DE102011101375A1 (de) |
| WO (1) | WO2012152424A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6539102B2 (ja) * | 2015-04-28 | 2019-07-03 | Joyson Safety Systems Japan株式会社 | シートベルトリトラクタ及びシートベルト装置 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729524A (en) * | 1986-09-26 | 1988-03-08 | Trw Vehicle Safety Systems Limited | Seat belt retractor with cinch mechanism |
| EP0523936A1 (de) * | 1991-07-17 | 1993-01-20 | Trw Vehicle Safety Systems Inc. | Gurtaufrollvorrichtung |
| US5518197A (en) * | 1994-10-21 | 1996-05-21 | Trw Vehicle Safety Systems Inc. | Seat belt retractor with automatic locking mechanism |
| US20010038054A1 (en) * | 1999-12-06 | 2001-11-08 | Shinji Mori | Webbing take-up device |
| EP1209047A1 (de) | 2000-11-16 | 2002-05-29 | TRW Occupant Restraint Systems GmbH & Co. KG | Gurtaufroller für einen Fahrzeug-Sicherheitsgurt |
| EP1394004A1 (de) * | 2002-08-29 | 2004-03-03 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Gurtaufroller |
| EP1462323A1 (de) * | 2003-02-28 | 2004-09-29 | TAKATA-PETRI (Ulm) GmbH | Gurtaufroller für einen Sicherheitsgurt |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4193566A (en) * | 1977-12-29 | 1980-03-18 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Webbing retractor for seatbelt system |
| US5660346A (en) | 1995-12-20 | 1997-08-26 | Trw Vehicle Safety Systems Inc. | Seat belt retractor |
| JP3842625B2 (ja) * | 2001-11-16 | 2006-11-08 | 株式会社東海理化電機製作所 | ウエビング巻取装置及びウエビング巻取装置組立方法 |
| US20050224623A1 (en) * | 2003-08-26 | 2005-10-13 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Webbing retractor |
-
2011
- 2011-05-12 DE DE102011101375A patent/DE102011101375A1/de not_active Withdrawn
-
2012
- 2012-05-07 DE DE112012002053.7T patent/DE112012002053B4/de active Active
- 2012-05-07 US US14/115,637 patent/US9409545B2/en active Active
- 2012-05-07 WO PCT/EP2012/001947 patent/WO2012152424A1/de not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729524A (en) * | 1986-09-26 | 1988-03-08 | Trw Vehicle Safety Systems Limited | Seat belt retractor with cinch mechanism |
| EP0523936A1 (de) * | 1991-07-17 | 1993-01-20 | Trw Vehicle Safety Systems Inc. | Gurtaufrollvorrichtung |
| US5518197A (en) * | 1994-10-21 | 1996-05-21 | Trw Vehicle Safety Systems Inc. | Seat belt retractor with automatic locking mechanism |
| US20010038054A1 (en) * | 1999-12-06 | 2001-11-08 | Shinji Mori | Webbing take-up device |
| EP1209047A1 (de) | 2000-11-16 | 2002-05-29 | TRW Occupant Restraint Systems GmbH & Co. KG | Gurtaufroller für einen Fahrzeug-Sicherheitsgurt |
| EP1394004A1 (de) * | 2002-08-29 | 2004-03-03 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Gurtaufroller |
| EP1462323A1 (de) * | 2003-02-28 | 2004-09-29 | TAKATA-PETRI (Ulm) GmbH | Gurtaufroller für einen Sicherheitsgurt |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112012002053B4 (de) | 2018-08-16 |
| US20140131501A1 (en) | 2014-05-15 |
| DE112012002053A5 (de) | 2014-03-06 |
| US9409545B2 (en) | 2016-08-09 |
| DE102011101375A1 (de) | 2012-11-15 |
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