WO2010031496A1 - Reversibler gurtstraffer - Google Patents
Reversibler gurtstraffer Download PDFInfo
- Publication number
- WO2010031496A1 WO2010031496A1 PCT/EP2009/006287 EP2009006287W WO2010031496A1 WO 2010031496 A1 WO2010031496 A1 WO 2010031496A1 EP 2009006287 W EP2009006287 W EP 2009006287W WO 2010031496 A1 WO2010031496 A1 WO 2010031496A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric motor
- drive wheel
- belt tensioner
- shaft
- transmission shaft
- 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
- 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
- B60R22/34—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
- B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
Definitions
- the invention relates to a reversible belt tensioner having an electric motor, a belt shaft which can be driven by the electric motor via a drive wheel in the belt winding direction and a gear shaft transmitting the rotational movement of the electric motor to the drive wheel.
- a reversible belt tensioner is known from WO 2003/099619 A2, in which the gear shaft transmitting the rotational movement of the electric motor to the belt shaft is coupled to the electric motor via a crown gear transmission and to the drive wheel via a worm gear transmission.
- a disadvantage of this embodiment is that the arrangement of the parts to each other can not be chosen freely, since the gears of the gear rotate the rotational movement in each case by 90 degrees and thereby the axes of rotation of the engaged rotating parts must be arranged at an angle of 90 degrees to each other , Furthermore, it has been found that the noise generated in the crown gear and the worm gear during belt tightening, especially for vehicles of the higher quality category, are no longer accepted by the vehicle manufacturers.
- the object of the invention is to provide a reversible belt tensioner, in which the electric motor, the belt shaft with the drive wheel and the transmission shaft can also be arranged in different directions to each other, so that the reversible belt tensioner can be made more compact overall and in confined Building spaces can be arranged. In addition, the resulting noise during the belt be tightened.
- the object is achieved according to the invention in that the gear shaft is connected to the drive wheel and / or the electric motor via a helical gear.
- a fferradgetriebes offers the advantage that the axes of rotation of the engaged parts can be arranged at angles not equal to 90 degrees to each other. As a result, the parts can be arranged at arbitrary angles to one another, so that the arrangement can take place in the sense of a compact design and utilization of the available free spaces. Since the parts in the screw drives only come to a punctiform contact, the noise is also significantly reduced beyond.
- Helical gears are generally characterized in that helical gears are paired with different helix angles but with the same pitch and the same pressure angle.
- the wheel axles can intersect at any angle through various helix angles.
- a helical gear has the advantage that the helical gears offer in addition to the diameter ratios by choosing the helix angle an additional way to change the gear ratio.
- the helical gears of the helical gear can be moved axially without the helical gears thereby disengaged. As a result, the demands on the manufacturing accuracy are significantly reduced, so that the effort and cost to achieve the required manufacturing accuracy can be significantly reduced.
- Fig.3 Electric motor with gear shaft and drive wheel
- FIG. 1 shows a reversible belt tensioner with a belt retractor 1 and an electric motor 2 driving the belt retractor 1 in the winding-up direction during the reversible tightening.
- an electronic control unit 4 (ECU) is arranged, which ECU is arranged, which
- a gear housing 3 with a corresponding cover 6 is arranged on the front side of the belt retractor housing 5, in which the later explained transmission shaft together with the associated gears and the drive wheel for coupling the electric motor 2 to the Gurtwel-
- FIG. 3 shows the electric motor 2 with the transmission shaft 9 and the drive wheel 10 from FIG. 2 without the belt shaft 1 for better recognition.
- the electric motor 2 is engaged with the transmission shaft 9 via a transmission "I.”
- the rotational movement of the transmission shaft 9 is transmitted to the drive wheel 10 via a second transmission “II”.
- the transmission shaft 9 is arranged between the axes "X" and “Z” of the drive wheel 10 and the electric motor 2, so that the electric motor 2 and the drive wheel 10 on different sides of the transmission shaft 9 with their teeth 12 and 7 in the teeth 11 and 8 the transmission shaft 9 engage. This results in a good overall force distribution in the transmission shaft 9 and in addition, the existing free space on the belt tensioner fer further exploited, so that the belt tensioner can be made even more compact.
- Both the transmission "I” and the transmission “II” are formed from two intermeshing tooth pairings 11 and 12 and 7 and 8.
- the gearboxes "I" and “II" are each as
- Helical gear designed so that the teeth 12 and 11 and 7 and 8 mesh with each other schraubg facedd.
- the screw-sliding combing movement of the helical gears offers the particular advantage that the toothings 11, 12, 7 and 8 abut each other only by a point contact and thus the noise development is considerably reduced.
- the teeth 11, 12, 7 and 8 also engage in one another. Other, if the electric motor 2, the gear shaft 9 and the drive wheel 10 due to manufacturing inaccuracies or operational wear their target position is no longer accurate.
- the toothings 11, 12, 7 and 8 are designed as oblique toothings, wherein the helix angles of the mutually adjacent toothings 11 and 12 and 8 and 7 are oriented in opposite directions.
- FIGS. 4a to 4c show different arrangements of the electric motor 2, the gear shaft 9 and the drive wheel 10, in which the angle "A" between the rotation axis "X” of the drive wheel 10 and the rotation axis "Y” of the transmission shaft 9 is less than 90 degrees, the axis of rotation "X” of the drive wheel 10 is identical in this embodiment with the axis of rotation of the belt shaft, so that it can be thought of in the extension.
- the angle "A" between the rotation axis "X” of the drive wheel 10 and the rotation axis "Y” of the transmission shaft 9 is less than 90 degrees
- the axis of rotation "X” of the drive wheel 10 is identical in this embodiment with the axis of rotation of the belt shaft, so that it can be thought of in the extension.
- the electric motor 2 with its rotation axis "Z” is crossed over the rotation axis "Y" of the transmission shaft 9 to an angle “B" greater than 90 degrees, so that the rotation axes "Z” and "X”
- the angles "A” and “B” can also be defined by the design of the helix angles of the toothings 11, 12, 8 and 7. With regard to the design of the helix angles and the resulting alignment of the axes, reference is made to relevant textbooks such as “machine elements” Roloff / Matek; Vieweg Verlag 2007, Wiesbaden, 18. Aufläge chapter 23 referenced.
- the orientation of the electric motor 2 to the belt shaft can be selected by the invention so that the available space in
- Vehicle and / or the free space on the reversible belt tensioner is better utilized, so that a total of a compact design of the belt tensioner can be realized and / or the belt tensioner can be adapted to the specified space conditions in the vehicle.
- FIG. 5a to 5c show further alternative arrangements with an angle “A” between the axes of rotation “X” and “Y” of greater than 90 ° .
- Figure 5a shows both the angle “A” and the angle “ B “greater than 90 degrees, so that an offset” b “of the gear” I “and” II “now results in the other direction compared to the embodiment described in Figure 4c.
- Choosing identical angles "A” and “B” would again result in a parallel alignment of the electric motor 2 and the belt retractor aligned in the direction of the axis "X.”
- FIG. 5c shows an embodiment in which the angle “B” is selected to be less than 90 degrees, so that the angle between the axes "X” and “Z” is further increased.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Gear Transmission (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011527231A JP5449365B2 (ja) | 2008-09-22 | 2009-08-31 | リバーシブル・シートベルト・テンショナ |
CN2009801372206A CN102159428A (zh) | 2008-09-22 | 2009-08-31 | 可逆安全带张紧器 |
US13/060,480 US8398012B2 (en) | 2008-09-22 | 2009-08-31 | Reversible seat belt tensioner |
US13/787,876 US20130193252A1 (en) | 2008-09-22 | 2013-03-07 | Reversible seat belt tensioner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008048339.7 | 2008-09-22 | ||
DE102008048339.7A DE102008048339B4 (de) | 2008-09-22 | 2008-09-22 | Reversibler Gurtstraffer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US201113060480A Continuation | 2008-09-22 | 2011-02-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/787,876 Continuation US20130193252A1 (en) | 2008-09-22 | 2013-03-07 | Reversible seat belt tensioner |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010031496A1 true WO2010031496A1 (de) | 2010-03-25 |
WO2010031496A8 WO2010031496A8 (de) | 2010-07-29 |
Family
ID=41346679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/006287 WO2010031496A1 (de) | 2008-09-22 | 2009-08-31 | Reversibler gurtstraffer |
Country Status (6)
Country | Link |
---|---|
US (2) | US8398012B2 (de) |
JP (2) | JP5449365B2 (de) |
KR (1) | KR20110074742A (de) |
CN (1) | CN102159428A (de) |
DE (1) | DE102008048339B4 (de) |
WO (1) | WO2010031496A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102139678A (zh) * | 2011-02-10 | 2011-08-03 | 清华大学 | 具有可逆预警功能的汽车座椅安全带*** |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008048339B4 (de) * | 2008-09-22 | 2016-07-28 | Autoliv Development Ab | Reversibler Gurtstraffer |
DE102012208347B4 (de) | 2012-05-18 | 2015-08-27 | Autoliv Development Ab | Gurtstrafferantrieb |
DE102012023031B4 (de) * | 2012-11-26 | 2023-02-23 | Zf Automotive Germany Gmbh | Gurtstraffer für ein Fahrzeuginsassen-Rückhaltesystem |
DE102013205246B3 (de) | 2013-03-25 | 2014-05-15 | Autoliv Development Ab | Gurtstrafferantrieb |
DE102013212033B4 (de) | 2013-06-25 | 2017-06-01 | Autoliv Development Ab | Reversibler Gurtstraffer |
DE102014200312A1 (de) | 2014-01-10 | 2015-07-16 | Autoliv Development Ab | Reversibler Gurtstraffer |
DE102014210154B4 (de) * | 2014-05-28 | 2017-08-03 | Autoliv Development Ab | Reversibler Gurtstraffer für einen Sicherheitsgurt |
JP6208295B1 (ja) * | 2016-07-07 | 2017-10-04 | 株式会社東海理化電機製作所 | ウェビング巻取装置 |
DE102018213282A1 (de) | 2018-08-08 | 2020-02-13 | Autoliv Development Ab | Gurtaufroller |
DE102019206439B4 (de) * | 2019-05-06 | 2021-11-11 | Autoliv Development Ab | Gurtaufroller |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003099619A2 (de) * | 2002-05-29 | 2003-12-04 | Autoliv Development Ab | Sicherheitsgurtaufroller mit einer vorstraffeinrichtung |
DE102005012623A1 (de) * | 2005-03-18 | 2006-09-21 | Siemens Ag | Schraubradgetriebeeinheit |
WO2007098744A1 (de) * | 2006-03-02 | 2007-09-07 | Zf Friedrichshafen Ag | Schraubradgetriebe für zahnstangenlenkung |
WO2007141129A1 (de) * | 2006-06-08 | 2007-12-13 | Brose Fahrzeugteile Gmbh & Co. Kg | Gurtstrafferantrieb |
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US9024A (en) * | 1852-06-15 | Motion of the lay in looms | ||
JPS6049056U (ja) * | 1983-09-13 | 1985-04-06 | 株式会社東海理化電機製作所 | ウエビング巻取装置 |
JPS6090047U (ja) * | 1983-11-28 | 1985-06-20 | トヨタ自動車株式会社 | シ−トベルト装置 |
JPS60124768U (ja) * | 1984-01-30 | 1985-08-22 | 株式会社東海理化電機製作所 | ウエビング緊張装置 |
JPS61282146A (ja) * | 1985-06-06 | 1986-12-12 | Nissan Motor Co Ltd | シ−トベルトリトラクタ |
JPH05162613A (ja) * | 1991-12-11 | 1993-06-29 | Kanto Auto Works Ltd | シートベルトリトラクタ |
US6205879B1 (en) * | 1999-06-28 | 2001-03-27 | Visteon Global Technologies, Inc. | Helical and spur gear drive with double crowned pinion tooth surfaces and conjugated gear tooth surfaces |
DE10013869C2 (de) * | 2000-03-21 | 2002-06-20 | Breed Automotive Tech | Komfort-Aufwickeleinrichtung für einen Sicherheitsgurt mit Motorrückholung |
US6726249B2 (en) * | 2000-05-26 | 2004-04-27 | Takata Corporation | Motorized seat belt retractor |
JPWO2003091604A1 (ja) * | 2002-04-26 | 2005-09-02 | 大岡技研株式会社 | 歯車製品及びその歯車製品の製造方法 |
US20130256445A1 (en) * | 2002-05-29 | 2013-10-03 | Autoliv Development Ab | Safety belt retractor having a pretensioning device |
JP4699725B2 (ja) * | 2004-04-13 | 2011-06-15 | 株式会社東海理化電機製作所 | モータリトラクタ |
JP4458526B2 (ja) * | 2004-07-21 | 2010-04-28 | タカタ株式会社 | シートベルトリトラクタ及びシートベルト装置 |
DE102004054078B4 (de) * | 2004-11-09 | 2013-03-07 | Key Safety Systems, Inc. | Verfahren zum Blockieren einer Wickelwelle eines Sicherheitsgurtaufrollers |
DE102005047212B4 (de) * | 2005-10-01 | 2007-11-15 | Autoliv Development Ab | Gurtaufroller-Straffer-Einheit mit einem in Abhängigkeit von der Drehrichtung ihres Antriebes ansteuerbaren Getriebe |
US20070194565A1 (en) * | 2006-02-21 | 2007-08-23 | Autoliv Asp, Inc. | Device for and a method of controlling tension of a vehicle seatbelt |
JP4893140B2 (ja) * | 2006-07-31 | 2012-03-07 | アイシン精機株式会社 | ウォームホイール |
DE102007038916A1 (de) * | 2007-08-17 | 2009-02-26 | Continental Automotive Gmbh | Gurtstrafferantrieb für den Sicherheitsgurt eines Fahrzeugs mit einem Topflager für die Rotorwelle eines Elektromotors |
DE102008040673B4 (de) * | 2008-06-24 | 2018-07-26 | Robert Bosch Automotive Steering Gmbh | Wellenlagerung in einem Lenksystem und damit ausgestattetes Lenkgetriebe und Herstellungsverfahren dafür |
DE102008048339B4 (de) * | 2008-09-22 | 2016-07-28 | Autoliv Development Ab | Reversibler Gurtstraffer |
US8469301B2 (en) * | 2009-11-04 | 2013-06-25 | Autoliv Development Ab | Seat belt retractor |
-
2008
- 2008-09-22 DE DE102008048339.7A patent/DE102008048339B4/de active Active
-
2009
- 2009-08-31 JP JP2011527231A patent/JP5449365B2/ja active Active
- 2009-08-31 KR KR1020117006337A patent/KR20110074742A/ko active IP Right Grant
- 2009-08-31 WO PCT/EP2009/006287 patent/WO2010031496A1/de active Application Filing
- 2009-08-31 CN CN2009801372206A patent/CN102159428A/zh active Pending
- 2009-08-31 US US13/060,480 patent/US8398012B2/en active Active
-
2013
- 2013-03-07 US US13/787,876 patent/US20130193252A1/en not_active Abandoned
- 2013-12-24 JP JP2013265206A patent/JP2014073839A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003099619A2 (de) * | 2002-05-29 | 2003-12-04 | Autoliv Development Ab | Sicherheitsgurtaufroller mit einer vorstraffeinrichtung |
DE102005012623A1 (de) * | 2005-03-18 | 2006-09-21 | Siemens Ag | Schraubradgetriebeeinheit |
WO2007098744A1 (de) * | 2006-03-02 | 2007-09-07 | Zf Friedrichshafen Ag | Schraubradgetriebe für zahnstangenlenkung |
WO2007141129A1 (de) * | 2006-06-08 | 2007-12-13 | Brose Fahrzeugteile Gmbh & Co. Kg | Gurtstrafferantrieb |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102139678A (zh) * | 2011-02-10 | 2011-08-03 | 清华大学 | 具有可逆预警功能的汽车座椅安全带*** |
Also Published As
Publication number | Publication date |
---|---|
DE102008048339B4 (de) | 2016-07-28 |
JP5449365B2 (ja) | 2014-03-19 |
CN102159428A (zh) | 2011-08-17 |
KR20110074742A (ko) | 2011-07-01 |
WO2010031496A8 (de) | 2010-07-29 |
US20110147510A1 (en) | 2011-06-23 |
JP2014073839A (ja) | 2014-04-24 |
US8398012B2 (en) | 2013-03-19 |
JP2012502836A (ja) | 2012-02-02 |
US20130193252A1 (en) | 2013-08-01 |
DE102008048339A1 (de) | 2010-05-27 |
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