WO2014183859A1 - Gurtaufroller und verfahren zum straffen eines unbenutzten fahrzeuggurts - Google Patents
Gurtaufroller und verfahren zum straffen eines unbenutzten fahrzeuggurts Download PDFInfo
- Publication number
- WO2014183859A1 WO2014183859A1 PCT/EP2014/001272 EP2014001272W WO2014183859A1 WO 2014183859 A1 WO2014183859 A1 WO 2014183859A1 EP 2014001272 W EP2014001272 W EP 2014001272W WO 2014183859 A1 WO2014183859 A1 WO 2014183859A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- vehicle
- tightening
- controller
- activation
- Prior art date
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
-
- 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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
-
- 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
- B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
-
- 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
- B60R22/02—Semi-passive restraint systems, e.g. systems applied or removed automatically but not both ; Manual restraint systems
- B60R2022/029—Belt storage; Devices or systems for controlling winding up of unused seat belt
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/442—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in parallel
- B60R2022/444—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in parallel the additional retraction device being an electric actuator
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/4446—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in series
- B60R2022/4466—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in series the additional retraction device being an electric actuator
-
- 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
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/4473—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using an electric retraction device
-
- 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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
-
- 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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/4685—Reels with means to tension the belt in an emergency by forced winding up with means to adjust or regulate the tensioning force in relation to external parameters
-
- 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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/469—Reels with means to tension the belt in an emergency by forced winding up reusable
-
- 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
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/4695—Reels with means to tension the belt in an emergency by forced winding up without winding function during normal use
Definitions
- the invention relates to a belt retractor for a safety belt, with a belt reel on which a belt strap can be wound spring-loaded, and with a tensioning device which can act on the belt reel in a winding direction.
- the invention further relates to a method for tightening an unused vehicle safety belt.
- a portion of the strap is wound on the belt reel of the belt retractor even in the buckled state of the seat belt. If in a case of restraint the belt reel is blocked, it may not turn to unwind the webbing. However, since the webbing is wound loosely on the belt reel by repeated winding and unwinding, the windings of the webbing wound on the belt reel can contract more closely on the belt reel, whereby a small webbing length can be withdrawn despite successful blocking of the belt reel. This effect is called a film spooling effect. By this additional webbing withdrawal but the restraining effect of the seat belt is affected because the vehicle occupant
- the object of the invention is to provide a belt retractor, which has a lower film coil effect and thus allows an improved effect of the safety belt.
- the object of the invention is furthermore to provide a method by which such a film coil effect is avoided or at least reduced.
- a belt retractor for a safety belt with a belt spool on which a belt can be wound spring-loaded, and with a tensioning device which can act on the belt reel in a winding.
- a control is provided which can activate the tensioning device when the seat belt is unloaded and not worn.
- the invention is based on the idea to wind the strap so tightly on the belt reel already before putting on the seat belt by a vehicle occupant that a film reel effect is prevented or at least reduced. This is done by an additional control by the tensioning device is so controlled in the unloaded, so not applied state of the seat belt, that a much larger Aufwickelkraft acts on the belt reel, as by the winding mechanism of the belt retractor.
- the belt is in the unloaded state between an end fitting and the belt retractor, in the case of a three-point belt additionally tensioned around a deflection point. Since the webbing is fully tensioned, a larger winding force acts directly on the windings of the webbing on the belt reel, which are thereby tightened closer to the belt reel. The webbing is therefore wound more tightly on the belt reel before the safety belt is put on, so that the windings remaining on the belt reel when the safety belt is put on are pulled closer together.
- the known from the prior art tightening usually activate the tensioning device only in a case of restraint, for example after the blocking of the seat belt or the belt reel or in the case of a Vorstraffsystems directly for the blocking of the seat belt.
- the tightening is done only when wearing the belt.
- the belt tensioner In the case of restraint, the belt tensioner must first work against the film spool effect before a further tightening of the seat belt can take place. Since the webbing is wound more tightly in the belt retractor according to the invention even before the belt spool is locked, a faster participation of the vehicle occupant in the overall deceleration of the vehicle can be achieved in the event of a restraint. Since the tightening is performed when the seat belt is not worn, the vehicle occupant is not affected, so that it is possible to apply very high tightening forces in order to achieve a tighter winding of the webbing.
- the tightening is preferably carried out only when there is no vehicle occupant in the vehicle, so that a distraction or irritation of the vehicle occupant is prevented.
- the controller has at least one sensor that measures defined states of the vehicle and releases the tightening in response to these vehicle conditions.
- the sensor may be, for example, an inclinometer, the controller releasing the tightening only when the vehicle is parked substantially horizontally.
- Belt retractors usually have a vehicle-sensitive locking function, which can block the belt reel with the vehicle tilted. In order to solve this blockage, a relief of the webbing or a rotation of the belt reel in the winding direction is required. If tightening is activated on an inclined vehicle, there is a risk of the belt reel being blocked with a heavily strapped safety belt, so that disengagement of the belt by turning the belt reel or relieving the webbing is not possible.
- the sensor may for example also be an interior monitor that ensures that no vehicle occupant is in the vehicle, or for example, a closed-lock monitoring that ensures that the vehicle is parked and the doors are locked, so the vehicle is parked and locked.
- the sensor may also be a so-called pull-out sensor, which ensures that the belt is completely stored and wound up is. Such a sensor may be useful to ensure that no vehicle occupant is in the vehicle even when the vehicle is parked or that the seat belt is not used for fixing objects in the parked vehicle, so a tightening takes place only when unloaded seat belt.
- a method for tightening an unused vehicle belt by applying a belt reel in a winding direction wherein it is detected by a control that the seat belt is unloaded and not applied by a vehicle occupant, and then the belt reel is applied in the winding direction.
- the controller checks, for example, whether the vehicle is parked and locked, and ensures that only when parked and locked vehicle activation of the tightening occurs.
- the controller checks, for example, whether the vehicle is parked and locked, and ensures that only when parked and locked vehicle activation of the tightening occurs.
- this ensures that no tightening occurs when a vehicle occupant wants to buckle up, so rolls out the seat belt.
- the activation of the tightening may, for example, be delayed in time for detecting the parking and closing of the vehicle. After the vehicle has been parked and locked, a tightening is thus delayed by a defined period of time to ensure that no person is in the vehicle.
- the controller can also check if a vehicle occupant is in the vehicle. This check is carried out for example by an interior monitor or a motion sensor, for which purpose, for example, sensors of a vehicle alarm system can be used. Activation of the tightening also takes place only when no vehicle occupant is detected in the vehicle.
- the use of the interior monitoring has the advantage that people can also wait in the parked and locked vehicle, without tightening the seat belts takes place.
- the position of the vehicle is detected, and a tightening is activated only when horizontally parked vehicle to avoid additional blockage of the belt reel or the wound seat belt by a vehicle-sensitive locking device.
- the controller can also detect the position of the seat belt and activate a tightening only when the seat belt is removed and wound up. Such a detection of the seat belt position can be done for example by means of a pull-out sensor. This ensures that a person wearing a seatbelt is not in the vehicle when the vehicle is parked or that the belt is not used to fix objects. In both cases, a tightening is not desired. A strapped seat belt could be a tautening for the belted person very uncomfortable. A fixed object could be damaged by the tightening.
- the controller can additionally check the state of charge of the battery. Activation of the tightening takes place only from a defined state of charge of the battery.
- control unit counts the up and unwinding operations of the safety belt and activating the tightening takes place only after a defined number of winding or unwinding operations. This is done for example via a counting mechanism, which is arranged on the pull-out sensor or on the buckle.
- the number of take-up and unwind operations depends, for example, on the webbing stiffness, the strength of the reel spring, or the friction at the webbing deflection points.
- FIG. 1 is a schematic representation of a belt retractor according to the invention prior to the activation of the tensioning device
- FIG. 1 is a schematic representation of a erfindungsgernä touch Gurtaufrollers after activation of the tensioning device.
- a belt retractor 10 is shown with a belt reel 12 which is rotatably mounted in the belt retractor 10 and on which a webbing 14 can be wound.
- a known per se and not shown here in detail winding mechanism which acts on the belt reel 12 with a directed in the winding A spring force, so that the webbing 14 is spring-loaded wound on the belt reel 2.
- the belt retractor 10 further comprises a tensioning device 16 with a motor, which can additionally act on the belt reel 12 in the winding A, a controller 18 for activating the tensioning device 16 and a blocking device, not shown.
- sensors are furthermore provided which can measure different states of the vehicle.
- the sensors are coupled to the controller 18 and may communicate the measured vehicle conditions to the controller 18.
- a first sensor provided on the belt retractor is a tilt angle sensor 20 which measures the inclination of the vehicle to the horizontal.
- a tilt angle sensor 20 which measures the inclination of the vehicle to the horizontal.
- Such a sensor usually controls a vehicle-sensitive blocking of the belt spool 12.
- the inclination angle sensor 20 is additionally coupled with the blocking device for this purpose.
- a second sensor is a Gurtbandauszugssensor 22, which detects the position of the webbing 14, or how far the webbing is pulled out.
- an interior sensor 24 is provided, which can detect movements in the interior.
- the tensioning device 16 serves, in the case of restraint of the belt retractor 10, to tighten the strap 14 by reducing slack, and pulling the vehicle occupant into the seat.
- the belt reel 12 is acted upon in the winding A, so that unneeded webbing 14 is wound on the belt reel 12.
- the webbing 14 of the seat belt is firmly against the vehicle occupant and this can participate faster in the overall deceleration of the vehicle.
- the safety belt is usually wound loosely on the belt reel 12 by the repeated winding and unwinding operations.
- This effect is commonly referred to as a film spooling effect.
- the controller 18 activates the tensioning device 16 when the seatbelt is not worn, so that the strap 14 is wound more tightly on the belt spool 12 when the blocking device is activated.
- the webbing 14 is tensioned in the unloaded state between a vehicle-fixed fitting 28 and the belt retractor 10, wherein a deflection via a deflection fitting 30 is possible.
- the webbing 14 is thus fully extended, so that an impact of the belt reel 12 in the winding A, causes the windings 26 of the webbing 14 are pulled closer to the belt reel 12, as shown in Figure 2 can be seen.
- the film reel effect is prevented or at least reduced during or after blocking of the belt retractor 10.
- the belt reel 12 is acted upon in the unloaded state of the seat belt so that this effect, unlike in the prior art, even before the safety belt is applied, the webbing 14 is thus already wound as tight as possible on the belt reel 12 before wearing the seat belt ,
- the tensioning device 16 can act on the belt reel 12 and thus the webbing 14, this process must be carried out with the seat belt not worn and unused so as not to irritate, distract or impair the vehicle occupant due to the sudden tightening of the webbing 14 ,
- the interior sensor 24 is detected, for example, whether a person is in the vehicle interior.
- the tensioning device 16 is activated exclusively by the controller 18 if there is no person in the vehicle interior.
- additional sensors can be detected, for example, that the vehicle is parked and closed. In this case, it is assumed that no person is in the locked and parked vehicle.
- additional sensors of the locking system or a parking brake may be coupled to the controller 18.
- the Gurtbandauszugssensor 22 it can be detected by the Gurtbandauszugssensor 22, whether the webbing 14 is completely wound on the belt reel 12, so not strapped in the parked vehicle, the seat belt, a waiting person or the seat belt is placed around an object.
- the inclination angle sensor 20 additionally ensures that the vehicle is turned off horizontally.
- Regular belt retractors have a blocking function, which block the belt reel 12 and thus the seat belt when the vehicle is tilted. A release of this blockage is only possible by relaxing the webbing 14 or by turning the belt reel 12 in the winding A.
- the tensioning device 16 is activated when the vehicle is not parked horizontally, there is the risk that the strap 14 is additionally tensioned and triggers the vehicle-sensitive blocking function. Since the webbing 14 is completely wound in this state and additionally stretched, a relief of the webbing 14, which would be required to solve the blocking, not possible. For this reason, the tensioning device 16 is activated only when a response of the vehicle-sensitive blocking is excluded, so the vehicle is horizontal.
- the activation of the tightening takes place only after a defined period of time to ensure that no person is in the vehicle. In addition, an irritation of the possibly still standing next to the vehicle by the noise in the vehicle is prevented.
- the Gurtbandauszugssensor 22 the number of unwinding or the winding operations of the webbing 14 are measured or detected, how far the webbing 14 is pulled out.
- a tightening is namely not required after each unwinding of the webbing 14, since only the windings 26 are loosely wound, which are previously unwound.
- the effect of the narrower winding thus remains longer for the windings 26 which are not unwound.
- controller 18 also check the state of charge of the vehicle battery to prevent discharge of the vehicle battery by the tensioning device 16.
- the tightening by the tensioning device 16 can be carried out with a very high force so that the belt strap 14 is as tight as possible on the belt reel 12 is wound up.
- the tightening is done, for example, with a force of 100 N, while in normal operation of the winding mechanism usually only a winding force of about 10 N is achieved.
- the tensioning device 16 can be controlled, for example, via the current intensity, so that the tensioning force can be increased in stages.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Automotive Seat Belt Assembly (AREA)
- Emergency Lowering Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480039415.8A CN105377640B (zh) | 2013-05-15 | 2014-05-12 | 用于拉紧未被利用的车辆安全带的安全带伸缩器和方法 |
JP2016513250A JP6395813B2 (ja) | 2013-05-15 | 2014-05-12 | ベルト引き込み装置および使用されていない車両シートベルトを引っ張る方法 |
US14/890,484 US10000183B2 (en) | 2013-05-15 | 2014-05-12 | Belt retractor and method for tightening an unused vehicle belt |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013008277.3A DE102013008277B4 (de) | 2013-05-15 | 2013-05-15 | Verfahren zum Straffen eines unbenutzten Fahrzeuggurts |
DE102013008277.3 | 2013-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014183859A1 true WO2014183859A1 (de) | 2014-11-20 |
Family
ID=50884331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/001272 WO2014183859A1 (de) | 2013-05-15 | 2014-05-12 | Gurtaufroller und verfahren zum straffen eines unbenutzten fahrzeuggurts |
Country Status (5)
Country | Link |
---|---|
US (1) | US10000183B2 (de) |
JP (1) | JP6395813B2 (de) |
CN (1) | CN105377640B (de) |
DE (1) | DE102013008277B4 (de) |
WO (1) | WO2014183859A1 (de) |
Citations (4)
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2013
- 2013-05-15 DE DE102013008277.3A patent/DE102013008277B4/de active Active
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2014
- 2014-05-12 JP JP2016513250A patent/JP6395813B2/ja active Active
- 2014-05-12 CN CN201480039415.8A patent/CN105377640B/zh active Active
- 2014-05-12 WO PCT/EP2014/001272 patent/WO2014183859A1/de active Application Filing
- 2014-05-12 US US14/890,484 patent/US10000183B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20010004030A1 (en) * | 1999-12-13 | 2001-06-21 | Ryuji Yano | Seat belt control device |
EP1555173A2 (de) * | 2004-01-14 | 2005-07-20 | Takata Corporation | Verfahren und Einrichtung zur Steuerung eines motorisch angetriebenen Sicherheitsgurtaufrollers |
US20080174098A1 (en) * | 2007-01-24 | 2008-07-24 | Takata Corporation | Seatbelt apparatus |
JP2011031664A (ja) * | 2009-07-30 | 2011-02-17 | Honda Motor Co Ltd | 車両用シートベルト装置 |
Also Published As
Publication number | Publication date |
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CN105377640A (zh) | 2016-03-02 |
JP2016521227A (ja) | 2016-07-21 |
US20160082920A1 (en) | 2016-03-24 |
DE102013008277B4 (de) | 2022-10-13 |
CN105377640B (zh) | 2018-02-06 |
US10000183B2 (en) | 2018-06-19 |
DE102013008277A1 (de) | 2014-11-20 |
JP6395813B2 (ja) | 2018-09-26 |
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