WO2011092787A1 - シートベルトリトラクタおよびこれを備えたシートベルト装置 - Google Patents
シートベルトリトラクタおよびこれを備えたシートベルト装置 Download PDFInfo
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- WO2011092787A1 WO2011092787A1 PCT/JP2010/007206 JP2010007206W WO2011092787A1 WO 2011092787 A1 WO2011092787 A1 WO 2011092787A1 JP 2010007206 W JP2010007206 W JP 2010007206W WO 2011092787 A1 WO2011092787 A1 WO 2011092787A1
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- WIPO (PCT)
- Prior art keywords
- seat belt
- spool
- rotation
- belt retractor
- driven
- Prior art date
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- B60R2022/4808—Sensing means arrangements therefor
- B60R2022/4825—Sensing means arrangements therefor for sensing amount of belt winded on retractor
Definitions
- the present invention relates to a technical field of a seat belt retractor that performs belt winding and belt withdrawal by driving and controlling the rotation of a spool with an electric motor that is a driving means, and particularly a rotation amount of the spool.
- the present invention relates to a technical field of a seat belt retractor including a rotation amount detection member to be detected and a seat belt device including the seat belt retractor.
- a seat belt device that is equipped on a vehicle such as an automobile prevents the passenger from jumping out of the seat by restraining the passenger with the seat belt in an emergency such as a vehicle collision.
- a seat belt apparatus includes a seat belt retractor that winds up the seat belt.
- the seat belt is wound around the spool when not worn, but is pulled out and worn by the occupant when worn. Then, the seat belt retractor is actuated in the event of an emergency as described above to prevent rotation of the spool in the belt withdrawing direction, thereby preventing the seat belt from being withdrawn.
- the occupant is restrained by the seat belt in an emergency.
- various belt tension modes are set according to the traveling state of the vehicle and the usage state of the seat belt device, and a spool for winding the seat belt as a seat belt retractor is driven by the motor power.
- seat belt devices including a motor retractor that rotates.
- the controller drives and controls the electric motor as a driving means so that the belt tension in the belt tension mode (belt tension) set in accordance with the traveling state of the vehicle and the usage state of the seat belt device. This controls the spool winding and withdrawal of the spool.
- FIG. 5 is a view showing the seat belt device described in Patent Document 1
- FIG. 6 is a view showing the seat belt retractor described in Patent Document 1 partially in section
- FIG. FIG. 7B is a partial view corresponding to the VIIB portion in FIG. 7A
- FIG. 7C is a cross-sectional view taken along the line VIIC-VIIC in FIG.
- FIG. 4 is a diagram for explaining detection of rotation by a rotation sensor.
- 1 is a seat belt device
- 2 is a vehicle seat
- 3 is a seat belt retractor configured as a motor retractor
- 4 is retractably wound on the seat belt retractor 3
- a belt anchor 4a at the tip is
- 5 is a guide anchor for guiding the seat belt 4 pulled out from the seat belt retractor 3 toward the occupant's shoulder
- 6 is a seat guided from the guide anchor 5.
- a tongue 7 slidably supported by the belt 4, a buckle 7 fixed to the floor of the vehicle body or a vehicle seat and a tongue 6 inserted and engaged in a detachable manner, and 8 a spool 10 of the seat belt retractor 3.
- a rotation sensor as a detection member 16 is a controller (CPU), 17 is a pretensioner, 18 is a rotation sensor 15 which is attached to the rotation shaft 10a of the spool 10 via the bush 10b so as to be rotatable integrally with the rotation shaft 10a.
- 19 is a bracket fixed to the right side wall 9b of the frame 9, and 20 is a circle concentric with the rotating shaft 10a.
- a pair of Hall elements (Hall ICs) 21 of the rotation sensor 15 which are disposed at predetermined intervals in the direction and are attached to the bracket 19 and electrically connected to the controller 16 are concentric with the rotation shaft 10a and have N poles
- the pair of Hall elements 20 detect the N-pole magnet 21a and the S-pole magnet 21b, respectively, and output their detection signals to the controller 16.
- each Hall element 20 detects the N-pole magnet 21a and the S-pole magnet 21b alternately, whereby the polarity of the current of the detection signal of each Hall element 20 is switched and the detection of each Hall element 20 is detected.
- the phases of the signals are shifted from each other by a predetermined amount.
- the controller 16 detects the rotation amount of the spool 10 by counting the number of times of switching the polarity of the current of the detection signal from each Hall element 20.
- the controller 16 controls the belt tension of the seat belt 4 by controlling the driving of the electric motor 8 based on the rotation amount of the spool 10 and the rotation direction of the spool 10.
- a bracket 19 to which a pair of Hall elements 20 of the rotation sensor 15 is attached is fixed to the right side wall 9b of the frame 9.
- a bush 10b attached to the rotating shaft 10a of the spool 10 passes through the bracket 19 so as to be relatively rotatable.
- the spool 10 is arranged with a certain amount of play with respect to the frame 9.
- the bracket 19 functions as a bearing that supports the rotating shaft 10a and the bush 10b when the spool 10 rattles. And in order to improve the detection accuracy of a rotation sensor, it is calculated
- the present invention has been made in view of such circumstances, and an object thereof is to reduce the load applied to the rotation sensor and increase the size in the thrust direction while improving the detection accuracy of the rotation amount detection member. It is an object of the present invention to provide a seat belt retractor capable of suppressing the above and a seat belt device including the same.
- a seat belt retractor includes a spool that winds up a seat belt, a driving unit that rotates the spool, and a rotation amount detection member that detects the rotation amount of the spool.
- the rotation amount detection member includes: It is characterized by being arranged eccentrically in the radial direction with respect to the rotating shaft of the spool.
- the rotation amount detection member is disposed in a direction in which the rotation shaft is separated from the rotation amount detection member by a load applied from the seat belt to the spool in an emergency. It is characterized by that.
- the rotation amount detecting member has a rotating disk, and the rotating disk has N-pole magnets and S-pole magnets arranged alternately and in an annular shape concentric with the rotating disk.
- a predetermined number of magnets provided, and a driven member that can rotate integrally with the predetermined number of magnets, and the spool is provided so as to be capable of rotating integrally with the spool to rotate the spool.
- a magnetic detection member for detecting a magnet located at a predetermined position among the predetermined number of magnets.
- the seat belt retractor includes a speed increasing mechanism for increasing the rotational speed of the transmission member and transmitting it to the driven member, and increasing the rotational speed of the spool to rotate the magnet. It is characterized by having.
- the seat belt retractor according to the present invention is such that the driven member is a driven gear, the transmission member is a transmission gear meshing with the driven gear, and the speed increasing mechanism is connected to the driven gear and the driven gear. It is characterized by comprising a transmission gear.
- the driven member is a driven pulley
- the transmitting member is a transmitted pulley
- the speed increasing mechanism includes the driven pulley, the transmitted pulley, and the driven pulley. It is characterized by comprising a transmission pulley and an endless belt wound around the transmission pulley.
- the seat belt device includes a seat belt retractor that winds up the seat belt, a tongue that is slidably supported by the seat belt pulled out from the seat belt retractor, and the tongue is detachable.
- the seat belt retractor is any one of the seat belt retractors of the present invention described above.
- the rotation amount detection member is eccentric from the rotation shaft of the spool and is disposed at a position in the radial direction of the rotation shaft. Therefore, the rotation amount detection member does not function as a spool bearing as in the prior art. Thereby, it is possible to effectively suppress transmission of a large load applied from the seat belt to the spool in an emergency to the rotation amount detection member. As a result, the size of the rotation amount detection member in the thrust direction (the axial direction of the spool) can be reduced as compared with the related art.
- the rotation amount detection member is disposed in a direction in which the rotation shaft is separated from the rotation amount detection member by a large load applied to the spool in an emergency, whereby the aforementioned large load is transmitted to the rotation amount detection member in an emergency. Can be more effectively suppressed.
- the size in the thrust direction of the rotation amount detection member can be reduced as compared with the conventional case.
- the rotation amount detection member is eccentrically arranged with respect to the rotation shaft of the spool and arranged in the radial direction, the size of the seat belt retractor in the thrust direction can be more effectively suppressed.
- the rotation amount detection member can be suppressed from being affected by the large load. As a result, the detection accuracy of the rotation amount detection member can be improved. Furthermore, when a large deceleration acts on the vehicle in an emergency, the occupant's inertial force applied to the seat belt is substantially forward, so the load direction is substantially constant. Therefore, the installation position of the rotation amount detection member can be easily set.
- a speed increasing mechanism for rotating the magnet by rotating the spool at a predetermined speed ratio is disposed between the rotation amount detecting member and the rotating shaft of the spool. Therefore, since the rotation of the magnet is larger than the rotation of the spool, it is possible to set the circumferential length of each N-pole magnet and each S-pole magnet to be large. In other words, the reference angle to be detected by the rotation amount detection member can be made larger than the reference speed to be detected by the conventional rotation sensor. Thereby, the dispersion
- the seat belt retractor of the present invention since the seat belt retractor of the present invention is provided, the occupant is efficiently restrained by the seat belt over a long period of time according to the vehicle running condition and the use condition of the seat belt apparatus. can do.
- FIG. 1 The 1st example of embodiment of the seatbelt retractor concerning this invention is shown partially, (a) is a perspective view, (b) is a right view in (a). It is a figure explaining the relationship between the direction of the load applied to a spool, and the installation position of a rotation sensor. It is a figure similar to FIG. 2 which shows the 2nd example of embodiment of this invention. (A) And (b) is a figure similar to FIG. 1 (a) and (b) which shows the 3rd example of embodiment of this invention. It is a figure which shows the seatbelt apparatus of patent document 1. It is a figure which takes the cross section partially and shows the seatbelt retractor of patent document 1. FIG.
- FIG. 1 is a diagram showing an annular magnet of a rotation sensor described in Patent Document 1
- (b) is a partial view corresponding to the VIIB portion in (a), partially showing the rotation sensor described in Patent Document 1
- (C) is a sectional view taken along the line VIIC-VIIC in (b). It is a figure explaining the detection of rotation by a rotation sensor.
- FIG. 1 partially shows a first example of an embodiment of a seat belt retractor according to the present invention, in which (a) is a perspective view and (b) is a right side view in (a).
- the same components as those in the seat belt device are denoted by the same reference numerals, and detailed description thereof is omitted.
- the seat belt retractor 3 of the first example includes a rotation sensor 15 that is a rotation amount detection member disposed at a position eccentric to the rotation shaft 10 a of the spool 10. I have.
- the rotation sensor 15 includes a rotary disk 18 that is rotatably attached to the right side wall 9b of the frame, and a bracket 19 that is non-movably attached to the right side wall 9b of the frame.
- the rotary disk 18 has an annular magnet holding member 22 and a magnet 21 that is integrally rotatable with the magnet holding member 22 and arranged in an annular shape.
- the annular magnet 21 is formed by alternately arranging N-pole magnets 21a and S-pole magnets 21b.
- the magnet holding member 22 integrally has a cylindrical driven gear 23 (corresponding to a driven member) having external teeth 23 a arranged concentrically with the magnet holding member 22.
- a transmission gear 24 (corresponding to a transmission member) is attached to the rotating shaft 10a of the spool 10 via the bush 10b so as to be integrally rotatable with the rotating shaft 10a.
- the transmission gear 24 has external teeth 24 a, and the external teeth 24 a mesh with the external teeth 23 a of the transmission gear 23.
- a pair of Hall elements (Hall ICs) 20 which are magnetic detection members, are provided on the bracket 19 in the same manner as the rotation sensor 15 described in Patent Document 1. It is attached so as to face a part of.
- Each Hall element 20 detects a magnet 21 located at a predetermined position.
- the rotation sensor 15 is disposed in the radial direction of the transmission gear 24 (that is, in the radial direction of the rotating shaft 10a).
- the transmission gear 24 that is, the rotating shaft 10a
- the driven gear 23 that is, the rotation sensor 15
- the gear ratio between the external teeth 23a of the driven gear 23 of the rotation sensor 15 and the external teeth 24a of the transmission gear 24 is determined by the rotation of the driven gear 23 (that is, the magnet 21).
- the transmission gear 24 is set to be faster than the rotation of the transmission gear 24 (that is, the rotation of the spool 10). That is, the transmission gear 23 and the transmission gear 24 constitute a speed increasing mechanism 25 including a gear mechanism that rotates the magnet 21 by increasing the rotation of the spool 10 at a predetermined speed ratio. Therefore, the speed increasing mechanism 25 is disposed between the rotation sensor 15 and the rotation shaft 10a of the spool 10.
- Other configurations of the seat belt retractor 3 of the first example and the configuration of the seat belt device 1 are the same as those of the seat belt retractor 3 and the seat belt device 1 described in Patent Document 1.
- the transmission gear 24 is covered by the large load F applied to the spool 10 in the radial direction in which the rotation sensor 15 is eccentric from the rotation shaft 10a of the spool 10 in an emergency. It is disposed at a position in a direction away from the transmission gear 23. Therefore, even if a large load F is applied to the spool 10 from the seat belt 4 in an emergency, the load F is hardly transmitted to the rotation sensor 15.
- the transmission gear 24 is caused by the large load F applied to the spool 10 in the radial direction in which the rotation sensor 15 is eccentric from the rotation shaft 10a of the spool 10 and in an emergency. It is disposed at a position in a direction away from the driven gear 23. Therefore, the rotation sensor 15 does not function as a bearing for the spool 10 as in the prior art. Thereby, it is possible to effectively suppress transmission of the large load F applied from the seat belt 4 to the spool 10 in an emergency to the rotation sensor 15. As a result, the size of the rotation sensor 15 in the thrust direction (the axial direction of the spool 10) can be reduced compared to the conventional size.
- the seat belt retractor 3 of the first example includes the rotation sensor 15, even if the rotation sensor 15 is provided, it is possible to effectively suppress an increase in the size of the seat belt retractor 3 in the thrust direction.
- the rotation sensor 15 is eccentrically arranged with respect to the rotation shaft 10a of the spool 10 in the radial direction, the size of the seat belt retractor 3 in the thrust direction can be more effectively suppressed.
- the rotation sensor 15 can be suppressed from being influenced by the load F. Thereby, the detection accuracy of the rotation sensor 15 can be improved. Furthermore, when a large deceleration acts on the vehicle in an emergency, the occupant's inertial force applied to the seat belt 4 is substantially forward, so the load direction F is substantially constant. Therefore, the installation position of the rotation sensor 15 can be easily set.
- a speed increasing mechanism 25 that rotates the magnet 21 by increasing the rotation of the spool 10 at a predetermined speed ratio is disposed between the rotation sensor 15 and the rotating shaft 10a of the spool 10. Therefore, since the rotation of the magnet 21 is larger than the rotation of the spool 10, the circumferential lengths of the N-pole magnets 21a and the S-pole magnets 21b can be set large. In other words, the reference angle to be detected by the rotation sensor 15 can be made larger than the reference speed to be detected by the conventional rotation sensor. Thereby, the dispersion
- the seat belt retractor 3 of the first example is provided. It can be restrained efficiently according to.
- the other functions and effects of the seat belt retractor 3 of the first example and the functions and effects of the seat belt apparatus 1 are the same as those of the seat belt retractor 3 and the seat belt apparatus 1 described in Patent Document 1.
- FIG. 3 is a view similar to FIG. 2, showing a second example of the embodiment of the present invention.
- the transmission gear 24 has external teeth 24 a, and the external teeth 23 a of the transmission gear 23 of the rotation sensor 15 are engaged with the external teeth 24 a of the transmission gear 24.
- the transmission gear 24 is constituted by an internal gear having internal teeth 24b.
- the outer teeth 23 a of the driven gear 23 are meshed with the inner teeth 24 b of the transmission gear 24.
- the speed increasing mechanism 25 is constituted by the outer teeth 23a and the inner teeth 24b.
- the transmission gear 24 is separated from the driven gear 23 by the large load F applied to the spool 10 in the radial direction in which the rotation sensor 15 is eccentric from the rotation shaft 10a of the spool 10 in an emergency. It is arranged at a position in the direction.
- Other configurations and operational effects of the seat belt retractor 3 of the second example are substantially the same as those of the first example shown in FIGS. 1 and 2.
- FIGS. 4A and 4B are views similar to FIGS. 1A and 1B, showing a third example of the embodiment of the present invention.
- the speed increasing mechanism 25 is constituted by a gear mechanism of the transmission gear 23 of the rotation sensor 15 and the transmission gear 24 fixed to the rotation shaft 10a of the spool 10.
- the speed increasing mechanism 25 is configured by a belt transmission mechanism 29. That is, in the third example, a driven pulley 30 is provided in the same manner as the driven gear 23 on the magnet holding member 22 of the rotation sensor 15 instead of the driven gear 23 of the first example.
- a transmission pulley 31 is provided on the rotating shaft 10 a of the spool 10 in the same manner as the transmission gear 24 instead of the transmission gear 24 of the first example.
- An endless belt 32 is wound around the driven pulley 30 and the transmission pulley 32. That is, the belt transmission mechanism 29 includes a driven pulley 30, a transmission pulley 31, and an endless belt 32.
- the endless belt winding radius of the transmission pulley 31 is set larger than the endless belt winding radius of the driven pulley 30. Accordingly, the rotation of the spool 10 is increased and transmitted to the magnet 21, and the rotation speed of the magnet 21 becomes larger than the rotation speed of the spool 10.
- Other configurations and other functions and effects of the seat belt retractor 3 and the seat belt device 1 of the third example are substantially the same as those of the first example.
- the seat belt retractor and the seat belt device of the present invention can be used for a seat belt retractor that drives and controls the rotation of a spool by an electric motor to perform belt winding and belt withdrawal, and a seat belt device including the seat belt retractor.
- the seat belt retractor including the rotation amount detection member for detecting the rotation amount of the spool and the seat belt apparatus using the seat belt retractor can be suitably used.
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Abstract
Description
更に、緊急時に大きな減速度が車両に作用したとき、シートベルトに加えられる乗員の慣性力はほぼ前方であるため、荷重方向がほぼ一定方向となる。したがって、回転量検出部材の設置位置を容易に設定することが可能となる。
図1は本発明にかかるシートベルトリトラクタの実施の形態の第1例を部分的に示し、(a)は斜視図、(b)は(a)における右側面図である。なお、以下の実施の形態の各例のシートベルトリトラクタおよびシートベルト装置の構成要素において、その例より前の例と同じ構成要素および図5ないし図8に示す特許文献1に記載のシートベルトリトラクタおよびシートベルト装置と同じ構成要素には同じ符号を付すことで、それらの詳細な説明は省略する。
第1例のシートベルトリトラクタ3の他の構成およびシートベルト装置1の構成は、特許文献1に記載のシートベルトリトラクタ3およびシートベルト装置1と同じである。
更に、緊急時に大きな減速度が車両に作用したとき、シートベルト4に加えられる乗員の慣性力はほぼ前方であるため、荷重方向Fがほぼ一定方向となる。したがって、回転センサ15の設置位置を容易に設定することが可能となる。
この第1例のシートベルトリトラクタ3の他の作用効果およびシートベルト装置1の作用効果は、特許文献1に記載のシートベルトリトラクタ3およびシートベルト装置1と同じである。
図1および図2に示す第1例では、伝動ギア24が外歯24aを有し、回転センサ15の被伝動ギア23の外歯23aがこの伝動ギア24の外歯24aに噛合されるようにしているが、図3に示すように、この第2例のシートベルトリトラクタ3では、伝動ギア24が内歯24bを有するインターナルギアで構成されている。そして、被伝動ギア23の外歯23aが伝動ギア24の内歯24bに噛合される。その場合、外歯23aと内歯24bとにより、増速機構25が構成されている。また、前述の第1例と同様に、回転センサ15がスプール10の回転軸10aと偏心したラジアル方向でかつ緊急時にスプール10に加えられる大きな荷重Fによって伝動ギア24が被伝動ギア23から離間する方向の位置に配設される。
この第2例のシートベルトリトラクタ3の他の構成および作用効果は、実質的に図1および図2に示す第1例と同じである。
前述の第1および第2例では、いずれも増速機構25が回転センサ15の被伝動ギア23とスプール10の回転軸10aに固定された伝動ギア24との歯車機構により構成されているが、図4(a)および(b)に示すように、この第3例のシートベルトリトラクタ3では、増速機構25がベルト伝動機構29で構成されている。すなわち、この第3例では、回転センサ15のマグネット保持部材22に、第1例の被伝動ギア23に代えて被伝動プーリ30が被伝動ギア23と同様にして設けられている。また、スプール10の回転軸10aには、第1例の伝動ギア24に代えて伝動プーリ31が伝動ギア24と同様にして設けられている。そして、被伝動プーリ30と伝動プーリ32とに無端ベルト32が巻掛けられている。すなわち、ベルト伝動機構29は、被伝動プーリ30、伝動プーリ31、および無端ベルト32により構成される。そして、伝動プーリ31の無端ベルト巻掛け半径が被伝動プーリ30の無端ベルト巻掛け半径より大きく設定されている。したがって、スプール10の回転が増速されてマグネット21に伝達され、マグネット21の回転速度がスプール10の回転速度より大きくなる。
この第3例のシートベルトリトラクタ3およびシートベルト装置1の他の構成および他の作用効果は、実質的に前述の第1例と同じである。
Claims (7)
- シートベルトを巻き取るスプールと、このスプールを回転させるための駆動手段と、スプールの回転量を検出する回転量検出部材とを少なくとも備え、前記回転量検出部材によって検出された前記スプールの回転量に基づいて前記駆動手段を駆動制御することで、スプールによる回転量が制御されるシートベルトリトラクタにおいて、
前記回転量検出部材は、前記スプールの回転軸とラジアル方向に偏心して配設されていることを特徴とするシートベルトリトラクタ。 - 前記回転量検出部材は、緊急時に前記シートベルトから前記スプールに加えられる荷重により前記回転軸が前記回転量検出部材から離間する方向に配設されていることを特徴とする請求項1に記載のシートベルトリトラクタ。
- 前記回転量検出部材は回転ディスクを有するとともに、前記回転ディスクは、N極マグネットおよびS極マグネットを交互にかつ前記回転ディスクと同心状の円環状に配設された所定数のマグネットと、これらの所定数のマグネットと一体回転可能な被伝動部材とを有し、
前記スプールに前記スプールと一体回転可能に設けられて前記スプールの回転を前記被伝動部材に伝達する伝動部材を有し、
前記所定数のマグネットのうち、所定位置に位置するマグネットを検出する磁気検出部材を有していることを特徴とする請求項1または2に記載のシートベルトリトラクタ。 - 前記伝動部材の回転速度を増速して前記被伝動部材に伝達して、前記スプールの回転速度を増速して前記マグネットを回転させる増速機構を有することを特徴とする請求項3に記載のシートベルトリトラクタ。
- 前記被伝動部材は被伝動ギアであるとともに、前記伝動部材は前記被伝動ギアに噛合する伝動ギアであり、
前記増速機構は前記被伝動ギアと前記伝動ギアとにより構成されていることを特徴とする請求項4に記載のシートベルトリトラクタ。 - 前記被伝動部材は被伝動プーリであるとともに、前記伝動部材は伝動プーリであり、
前記増速機構は、前記被伝動プーリ、前記伝動プーリ、および前記被伝動プーリと前記伝動プーリとに巻掛けられた無端ベルトにより構成されていることを特徴とする請求項4に記載のシートベルトリトラクタ。 - シートベルトを巻き取るシートベルトリトラクタと、このシートベルトリトラクタから引き出されたシートベルトに摺動自在に支持されたタングと、このタングが係脱可能に係合されるバックルとを少なくとも備え、前記シートベルトによって乗員を拘束するシートベルト装置において、
前記シートベルトリトラクタは、請求項1ないし6のいずれか1に記載のシートベルトリトラクタであることを特徴とするシートベルト装置。
Priority Applications (3)
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US13/522,916 US8960585B2 (en) | 2010-01-29 | 2010-12-10 | Seatbelt retractor and seatbelt apparatus including the same |
CN201080062147.3A CN102712292B (zh) | 2010-01-29 | 2010-12-10 | 座椅安全带卷收器及具有其的座椅安全带装置 |
EP10844555.2A EP2529982A4 (en) | 2010-01-29 | 2010-12-10 | SEAT BELT PULLING AND SEAT BELTING DEVICE THEREWITH |
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JP2010017836A JP5450131B2 (ja) | 2010-01-29 | 2010-01-29 | シートベルトリトラクタおよびこれを備えたシートベルト装置 |
JP2010-017836 | 2010-01-29 |
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WO2011092787A1 true WO2011092787A1 (ja) | 2011-08-04 |
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US (1) | US8960585B2 (ja) |
EP (1) | EP2529982A4 (ja) |
JP (1) | JP5450131B2 (ja) |
CN (1) | CN102712292B (ja) |
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JP5462070B2 (ja) * | 2010-05-17 | 2014-04-02 | タカタ株式会社 | 位置検知装置、この位置検知装置を備えたシートベルトリトラクタ、およびこのシートベルトリトラクタを備えたシートベルト装置 |
DE102013004784A1 (de) * | 2013-03-20 | 2014-09-25 | Trw Automotive Gmbh | Gurtaufroller mit Drehwinkelbestimmung |
DE102014018262B4 (de) * | 2014-12-11 | 2021-08-05 | Zf Automotive Germany Gmbh | Gurtaufroller mit einem Signalgeberring |
EP3199410B1 (en) * | 2016-01-29 | 2019-03-27 | Autoliv Development AB | Control method for an electric seatbelt retractor and electric seatbelt retractor |
KR101766139B1 (ko) * | 2016-05-11 | 2017-08-07 | 현대자동차주식회사 | 전동식 시트벨트 장치 |
DE102017122459A1 (de) * | 2017-09-27 | 2019-03-28 | Trw Automotive Gmbh | Verfahren zur Messung des Gurtbandauszugs sowie Gurtbandaufroller |
US10829085B2 (en) * | 2018-02-18 | 2020-11-10 | Joyson Safety Systems Acquisition Llc | Seat belt retractor |
US10994696B2 (en) * | 2018-10-02 | 2021-05-04 | GM Global Technology Operations LLC | System and method determining seatbelt webbing payout |
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- 2010-12-10 US US13/522,916 patent/US8960585B2/en not_active Expired - Fee Related
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- 2010-12-10 CN CN201080062147.3A patent/CN102712292B/zh not_active Expired - Fee Related
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Also Published As
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US20120292417A1 (en) | 2012-11-22 |
US8960585B2 (en) | 2015-02-24 |
CN102712292A (zh) | 2012-10-03 |
EP2529982A1 (en) | 2012-12-05 |
CN102712292B (zh) | 2015-05-20 |
JP2011156889A (ja) | 2011-08-18 |
JP5450131B2 (ja) | 2014-03-26 |
EP2529982A4 (en) | 2013-07-03 |
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