JPS6216113Y2 - - Google Patents
Info
- Publication number
- JPS6216113Y2 JPS6216113Y2 JP13664581U JP13664581U JPS6216113Y2 JP S6216113 Y2 JPS6216113 Y2 JP S6216113Y2 JP 13664581 U JP13664581 U JP 13664581U JP 13664581 U JP13664581 U JP 13664581U JP S6216113 Y2 JPS6216113 Y2 JP S6216113Y2
- Authority
- JP
- Japan
- Prior art keywords
- lock
- winding shaft
- pin
- webbing
- shaft
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 58
- 230000001133 acceleration Effects 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 10
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Automotive Seat Belt Assembly (AREA)
Description
【考案の詳細な説明】
本考案は車両緊急時の乗員保護用シートベルト
装置に用いられて乗員拘束用ウエビングを巻取る
ウエビング巻取装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a webbing take-up device for use in a seat belt device for protecting an occupant in a vehicle emergency, and for winding webbing for restraining an occupant.
シートベルト装置に用いられるウエビング巻取
装置は乗員拘束用ウエビングの端部を付勢力で巻
取ると共に、車両緊急時にはロツク装置でウエビ
ングの巻出しを瞬時に停止させるようになつてい
る。 A webbing take-up device used in a seat belt device uses a biasing force to wind up the end of the webbing for restraining an occupant, and in the event of a vehicle emergency, a lock device is used to instantly stop unwinding of the webbing.
このロツク装置は車両緊急時に衝突方向へ激し
く移動する乗員の慣性力を確実に支持する必要が
あるので、大きな強度を有するようになつてい
る。このため従来、巻取軸へラチエツトホイルを
固着し、このラチエツトホイルへフレームに軸支
されたロツクバーを噛合わせるロツク手段が広く
用いられている。しかしこの巻取軸へ固着された
ラチエツトホイルとロツクバーによる噛合い手段
は巻取軸のロツクを確実にするものの、ウエビン
グ巻取装置の外径を大きくする不具合を有してい
る。 This locking device has great strength because it is necessary to reliably support the inertia of the occupant who moves violently in the direction of collision in the event of a vehicle emergency. For this reason, conventionally, a locking means has been widely used in which a ratchet wheel is fixed to the winding shaft, and a lock bar pivotally supported by a frame is engaged with the ratchet wheel. However, although this meshing means consisting of a ratchet wheel fixed to the winding shaft and a lock bar securely locks the winding shaft, it has the disadvantage of increasing the outer diameter of the webbing winding device.
また巻取軸へ固着されたラチエツトホイルとロ
ツクバーによる組み合わせを用いないロツク機構
においては、巻取軸と共に回転するロツク部材に
不釣合を生じたりロツク部材が巻取軸との間にガ
タツキを生じて応答加速度を不安定にする原因と
なつている。 In addition, in a lock mechanism that does not use a combination of a ratchet wheel and a lock bar fixed to the winding shaft, the lock member rotating together with the winding shaft may become unbalanced, or the lock member may wobble between the winding shaft and the response acceleration. This causes instability.
本考案は上記事実を考慮し、小型でロツク時の
強度が大きく且つ応答加速度が安定したウエビン
グ巻取装置を得ることが目的である。 In consideration of the above facts, the present invention aims to provide a webbing retractor which is small in size, has high strength when locked, and has stable response acceleration.
本考案に係るウエビング巻取装置はフレームへ
内歯ラチエツトホイルを固着し、車両緊急時に巻
取軸に対して回転遅れを生じるロツク輪が巻取軸
へ所定量相対移動可能とされたロツクメンバーを
この内歯ラチエツトホイルへ噛合わせ、巻取軸の
ウエビング巻出回転を停止する構造として巻取装
置を小型にし、ロツクメンバーから突出したピン
はロツク輪に設けた長穴へ収容して案内手段を構
成することによりロツクメンバーを遊びなく案内
して応答加速度を安定させ、且つロツク時には長
穴の一部に設けた幅広部へピンを収容することに
より案内手段の破損を防止するようになつてい
る。 The webbing retractor according to the present invention has an internally toothed ratch foil fixed to the frame, and a lock member that is capable of moving a lock ring that causes a rotation delay with respect to the rewind shaft by a predetermined amount relative to the rewind shaft in the event of a vehicle emergency. The winding device is made smaller by having a structure that meshes with the internal toothed ratch wheel and stops the webbing unwinding rotation of the winding shaft, and the pin protruding from the lock member is accommodated in the elongated hole provided in the lock ring to constitute the guide means. As a result, the locking member is guided without play to stabilize the response acceleration, and when the lock is locked, the pin is housed in a wide part provided in a part of the elongated hole, thereby preventing damage to the guide means.
以下本考案の実施例を図面に従い説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第1図乃至第3図に示される如く本実施例に係
るウエビング巻取装置10はフレーム12が取付
ボルト14で車体16へ固着されている。 As shown in FIGS. 1 to 3, a webbing retractor 10 according to this embodiment has a frame 12 fixed to a vehicle body 16 by mounting bolts 14.
このフレーム12の両側部から互に平行に延長
される脚部18,20には巻取軸22が軸支され
ている。この巻取軸の中央部には乗員拘束用ウエ
ビング24の一端が層状に巻取られている。また
巻取軸22は脚部20を通過した端部にぜんまい
ばね26の内端が取付けられ、このぜんまいばね
の外端は脚部20へ固着されたばねケース28へ
係止されている。従つて巻取軸22はウエビング
24の巻取方向(第2,3図矢印A方向)に付勢
されている。 A winding shaft 22 is pivotally supported by leg portions 18 and 20 extending parallel to each other from both sides of the frame 12. One end of the occupant restraining webbing 24 is wound in layers around the center of the winding shaft. Further, the inner end of a mainspring spring 26 is attached to the end of the winding shaft 22 passing through the leg 20, and the outer end of this mainspring spring is locked to a spring case 28 fixed to the leg 20. Therefore, the winding shaft 22 is biased in the winding direction of the webbing 24 (in the direction of arrow A in FIGS. 2 and 3).
脚部18の外側には内歯ラチエツトホイル30
が4個のリベツト32で固着されている。この内
歯ラチエツトホイル30内には第4図にも示され
る如く一対のロツクプレート34,36が対応し
てロツクメンバーとしての役目を有している。 An internal tooth ratchet foil 30 is provided on the outside of the leg portion 18.
is fixed with four rivets 32. As shown in FIG. 4, a pair of lock plates 34 and 36 are provided within the internal ratchet wheel 30 and serve as lock members.
これらのロツクプレート34,36は中央部に
巻取軸22の放射方向突起である矩形状突出部3
8を受け入れる凹部40が設けられており、これ
によつてロツクプレート34,36の全体形状が
略C字状となつている。またこのC字状両端部、
すなわち巻取軸22を挟んだロツクプレート3
4,36の端面42は巻取軸22の軸心を含む直
線上に配置されて他方のロツクプレートとの当接
面となつている。ここにこの端面42は第5図に
2点鎖線で示されるロツク状態へ移動する場合に
一対のロツクプレート34,36が互に滑りなが
ら反対方向へ移動する摺動面となつている。 These lock plates 34 and 36 have a rectangular protrusion 3 in the center that is a radial protrusion of the winding shaft 22.
A recess 40 for receiving the lock plate 8 is provided, so that the overall shape of the lock plates 34, 36 is approximately C-shaped. Also, both ends of this C-shape,
In other words, the lock plate 3 sandwiching the winding shaft 22
The end faces 42 of the winding shafts 4 and 36 are arranged on a straight line including the axis of the winding shaft 22, and serve as a contact surface with the other lock plate. Here, this end surface 42 is a sliding surface on which the pair of lock plates 34 and 36 move in opposite directions while sliding against each other when moving to the locked state shown by the two-dot chain line in FIG.
一対のロツクプレート34,36の外周部には
ロツク爪44が一部に形成されており、ロツクプ
レート34,36が端面42で互に摺動して反対
方向へ移動した場合に内歯ラチエツトホイル30
と噛合つてロツクプレート34,36の巻取軸回
りの回転が停止するようになつている。従つてロ
ツクプレート34,36と矩形状突出部38(巻
取軸22)とは第5図実線状態から2点鎖線状態
まで相対移動可能である。 A lock pawl 44 is formed in a part of the outer periphery of the pair of lock plates 34 and 36, and when the lock plates 34 and 36 slide against each other on the end surfaces 42 and move in opposite directions, the internal tooth ratch wheel 30
The rotation of the lock plates 34, 36 about the winding shaft is stopped by meshing with the winding shaft. Therefore, the lock plates 34, 36 and the rectangular protrusion 38 (take-up shaft 22) can move relative to each other from the state shown by the solid line in FIG. 5 to the state shown by the two-dot chain line.
ロツクプレート34,36の脚部18と反対側
表面からはそれぞれ一対のピン46が巻取軸22
と平行に突出している。 A pair of pins 46 are attached to the winding shaft 22 from the opposite surfaces of the lock plates 34 and 36 from the leg portions 18, respectively.
protrudes parallel to.
巻取軸22の矩形状突出部38へは支軸48が
同軸上に取付けられて巻取軸22と一対的に回転
するようになつている。この支軸48にはロツク
輪としての慣性板50が支軸48と相対回転可能
に軸支されており、第6図に示される如くこの慣
性板50のロツクプレート側表面には4個の長穴
52が形成されてピン46と対応している。これ
らの長穴52は一側が幅挟部52A、他側が幅広
部52Bとなつており、幅挟部52Aの幅寸法は
ピン46を緊密に収容できる大きさで幅広部52
Bの幅寸法はピン46の外周との間に遊びを有す
る大きさとなつている。 A support shaft 48 is coaxially attached to the rectangular protrusion 38 of the winding shaft 22 so as to rotate in pairs with the winding shaft 22. An inertia plate 50 serving as a locking wheel is rotatably supported on this support shaft 48 so as to be rotatable relative to the support shaft 48.As shown in FIG. A hole 52 is formed and corresponds to the pin 46. These elongated holes 52 have a width pinched part 52A on one side and a wide part 52B on the other side, and the width of the width pinched part 52A is large enough to tightly accommodate the pin 46.
The width dimension of B is such that there is play between it and the outer periphery of the pin 46.
これらの長穴52へはピン46が収容されて両
者がガイド手段を構成しており、ピン46を幅挟
部52Aへ収容した場合には第3図に示される如
く一対のロツクプレート34,36が内歯ラチエ
ツトホイル30から離間し、ピン46が幅広部5
2B内へ収容されるとロツクプレートのロツク爪
44が内歯ラチエツトホイル30と噛合うように
なつている。 A pin 46 is accommodated in these elongated holes 52, and both constitute a guide means, and when the pin 46 is accommodated in the width sandwiching portion 52A, a pair of lock plates 34, 36 are inserted into each other as shown in FIG. is spaced apart from the internal tooth ratchet foil 30, and the pin 46 is separated from the wide portion 5.
2B, the locking pawl 44 of the locking plate is adapted to engage the internally toothed ratchet foil 30.
ここに慣性板50は支軸48との間にねじりコ
イルばね54が介在されることにより第3図にお
いて巻取軸22に対して時計方向、すなわち巻取
軸のウエビング巻出方向に付勢されている。従つ
て慣性板50は巻取軸22がウエビング巻出し方
向に所定加速度以下で巻出される場合にはばね付
勢力を受けて巻取軸22に追従し巻取軸22と一
対的に回転するようになつており、この状態では
ピン46が長穴52の幅挟部52Aへ収容されて
いる。また巻取軸22のウエビング巻出回転が急
激に行われると慣性板50がその慣性力でねじり
コイルばね54を撓ませて巻取軸22に対して回
転遅れを生じ、この状態でピン46は巻取軸22
の巻出回転力を受けて長穴52の幅広部52Bへ
と移動するようになつている。 A torsion coil spring 54 is interposed between the inertia plate 50 and the support shaft 48, so that the inertia plate 50 is biased clockwise with respect to the winding shaft 22 in FIG. 3, that is, in the webbing unwinding direction of the winding shaft. ing. Therefore, when the take-up shaft 22 is unwound in the webbing unwinding direction at a predetermined acceleration or less, the inertia plate 50 receives the spring biasing force, follows the take-up shaft 22, and rotates in pairs with the take-up shaft 22. In this state, the pin 46 is accommodated in the width sandwiched portion 52A of the elongated hole 52. Further, when the webbing unwinding rotation of the take-up shaft 22 is performed rapidly, the inertia plate 50 bends the torsion coil spring 54 by its inertia force, causing a rotation delay with respect to the take-up shaft 22, and in this state, the pin 46 is Winding shaft 22
It moves to the wide part 52B of the elongated hole 52 in response to the unwinding rotational force of the elongated hole 52.
なお巻取軸22が通常の巻出し、巻取回転を行
う場合にはロツクプレート34,36の凹部40
と巻取軸矩形状突出部38との関係は、凹部40
の一部がストツパ40Aとしてねじりコイルばね
54の付勢力で巻取軸矩形状突出部38へ当接し
て停止している。 Note that when the winding shaft 22 performs normal unwinding and winding rotation, the recesses 40 of the lock plates 34 and 36
The relationship between the winding shaft rectangular protrusion 38 and the recess 40 is
A part of the winding shaft acts as a stopper 40A and comes into contact with the rectangular protrusion 38 of the winding shaft due to the biasing force of the torsion coil spring 54 and is stopped.
慣性板50には外周にラチエツト歯56が刻設
されており、脚部18へ軸支されたポール58と
対応している。このポール58は脚部18のケー
ス60内へ収容された慣性ボール62によつて押
上げられ、ラチエツト歯56と噛合うようになつ
ている。この慣性ボール62は車両通常走行状態
でポール58をラチエツト歯56から離間させて
いるが、車両加速度が所定値に達すると移動して
ポール58をラチエツト歯56と噛合わせ、慣性
板50のウエビング巻出し方向回転を停止させる
ようになつている。従つてこの慣性ボール62は
加速度センサーとしての役目を有しており、慣性
板50が慣性力で巻取軸22に対して回転遅れを
生じない場合にも慣性板50の回転を阻止するよ
うになつている。なお、脚部18にはダストカバ
ー64が取りつけられて内歯ラチエツトホイル3
0、慣性板50、慣性ボール62等を覆つてい
る。 The inertia plate 50 has ratchet teeth 56 carved on its outer periphery, which correspond to the pawls 58 pivotally supported on the legs 18. The pawl 58 is pushed up by an inertia ball 62 housed within a case 60 of the leg 18 into engagement with the ratchet teeth 56. This inertial ball 62 separates the pawl 58 from the ratchet teeth 56 when the vehicle is normally running, but when the vehicle acceleration reaches a predetermined value, it moves and engages the pawl 58 with the ratchet teeth 56, causing the webbing of the inertia plate 50 to be wound. It is designed to stop rotation in the output direction. Therefore, this inertial ball 62 has a role as an acceleration sensor, and is designed to prevent rotation of the inertial plate 50 even when the inertial plate 50 does not lag in rotation with respect to the winding shaft 22 due to inertial force. It's summery. Note that a dust cover 64 is attached to the leg portion 18 and the internal tooth ratchet foil 3 is attached to the leg portion 18.
0, the inertia plate 50, the inertia ball 62, etc. are covered.
このように構成された本実施例の巻取装置10
では乗員がウエビング24を巻取軸22から巻出
して装着することができる。このウエビング24
の通常使用状態における巻出し、巻取動作では巻
取軸22へ大きな回転加速度が生じないので、慣
性板50は巻取軸22に追従して回転し、巻取軸
22の巻出し回転がロツクすることはない。この
通常走行状態における巻取軸22の回転時にはロ
ツクプレート34,36のピン46が長穴52の
幅挟部52Aへ緊密に収容されているので、ロツ
クプレート34,36は巻取軸22の矩形状突出
部38との間にガタツキを生ずることはなく、騒
音発生の原因となることはない。 Winding device 10 of this embodiment configured as described above
Then, the occupant can unwind the webbing 24 from the take-up shaft 22 and attach it. This webbing 24
During the unwinding and winding operations in normal use, a large rotational acceleration is not generated on the winding shaft 22, so the inertia plate 50 rotates following the winding shaft 22, and the unwinding rotation of the winding shaft 22 is locked. There's nothing to do. During the rotation of the winding shaft 22 in this normal running state, the pins 46 of the lock plates 34, 36 are tightly accommodated in the width pinching portion 52A of the elongated hole 52, so that the lock plates 34, 36 are fixed to the rectangular shape of the winding shaft 22. There is no rattling between the shaped protrusion 38 and no noise generation.
車両が衝突等の緊急状態に陥いると、ウエビン
グ24を装着した乗員は衝突方向へ激しく移動す
るのでウエビング24が急激に巻取軸22から巻
出され、巻取軸22には大きな巻出し加速度が発
出する。このため慣性板50は巻取軸22に対し
て回転遅れを生じ、矩形状突出部38は凹部40
を介してロツクプレート34,36を互に反対方
向へ駆動し、第5図に示される如く内歯ラチエツ
トホイル30と噛合わせる。従つて巻取軸22の
ウエビング巻出し回転は瞬時に停止され、乗員は
ウエビング24の確実な拘束状態となつて安全が
確保できる。このロツク状態でピン46は第5図
に2点鎖線で示される如く長穴52の幅広部52
B内へ緩く収容されている。 When the vehicle is in an emergency situation such as a collision, the occupant wearing the webbing 24 moves violently in the direction of the collision, so the webbing 24 is suddenly unwound from the take-up shaft 22, causing the take-up shaft 22 to receive a large unwinding acceleration. is issued. For this reason, the inertia plate 50 causes a rotational delay with respect to the winding shaft 22, and the rectangular protrusion 38
The lock plates 34, 36 are driven in opposite directions through the lock plates 34 and 36 into engagement with the internally toothed ratchet wheel 30 as shown in FIG. Therefore, the webbing unwinding rotation of the take-up shaft 22 is stopped instantaneously, and the occupant is securely restrained by the webbing 24, thereby ensuring safety. In this locked state, the pin 46 is inserted into the wide portion 52 of the elongated hole 52 as shown by the two-dot chain line in FIG.
It is loosely housed in B.
ロツクプレート34,36は巻取軸22の軸心
を中心に反対方向に配置されているので回転時に
不釣合が生じることはなく、またロツクプレート
34,36はロツク状態へ移動するまでの間、ピ
ン46は長穴52の幅挟部52Aへ緊密に収容さ
れた状態で巻取軸矩形状突出部38の駆動力を受
けるので迅速にロツクプレート34,36を内歯
ラチエツトホイル30へ噛合わせることができ
る。 Since the lock plates 34 and 36 are arranged in opposite directions with respect to the axis of the winding shaft 22, there is no unbalance during rotation, and the lock plates 34 and 36 remain in the pin position until they move to the locked state. 46 receives the driving force of the winding shaft rectangular protrusion 38 while being tightly housed in the width sandwiching portion 52A of the elongated hole 52, so that the lock plates 34 and 36 can be quickly engaged with the internally toothed ratchet wheel 30. .
また車両緊急時に発生する車両加速度は慣性ボ
ール62を移動させるので、ポール58はラチエ
ツト歯56と噛合つて慣性板50のウエビング巻
出回転が停止し、これによつても慣性板50と巻
取軸22との間に相対回転が発生し、乗員が衝突
方向に投げ出されない場合にも、または投げ出さ
れる前に乗員をウエビング24による拘速状態と
することができる。 Further, since the vehicle acceleration that occurs in a vehicle emergency moves the inertia ball 62, the pawl 58 meshes with the ratchet teeth 56 and the webbing unwinding rotation of the inertia plate 50 is stopped. Even if a relative rotation occurs between the webbing 22 and the occupant is not thrown in the direction of the collision, or before the occupant is thrown, the occupant can be restrained by the webbing 24.
このようなロツク状態において慣性板50はそ
の回転が阻止されており、一方ピン46は巻取軸
矩形状突出部38の駆動力を受けて巻取軸22の
軸心回りに回転力を受けるのでピン46は長穴5
2の幅方向へ移動する力を受けるが、本実施例で
は長穴52の一方が幅広部52Bとされているの
で、ロツク状態においてピン46と幅広部52B
の内周との間には隙間が存在し、これによつてピ
ン46又は長穴52が破壊する虞れがない。また
その他にもこの幅広部52Bは、ピン46、ロツ
クプレート34,36、巻取軸矩形状突出部38
等に生ずる寸法公差を吸収してピン46と長穴5
2間に長穴52の幅方向へ加わる不要な荷重を解
消することができる。 In this locked state, the inertia plate 50 is prevented from rotating, while the pin 46 receives the driving force of the winding shaft rectangular protrusion 38 and receives rotational force around the axis of the winding shaft 22. Pin 46 is elongated hole 5
However, in this embodiment, since one of the elongated holes 52 is the wide portion 52B, the pin 46 and the wide portion 52B are moved in the locked state.
There is a gap between the pin 46 and the inner periphery of the pin 46, so that there is no risk of the pin 46 or the elongated hole 52 being destroyed. In addition, this wide portion 52B also includes a pin 46, lock plates 34, 36, and a rectangular protrusion 38 of the winding shaft.
The pin 46 and the elongated hole 5 are
Unnecessary load applied between the two in the width direction of the elongated hole 52 can be eliminated.
なおロツクプレート34,36は巻取軸22の
軸心を中心にして反対方向に配置されているので
回転時に不釣合が生じることはなく、またロツク
状態においては巻取軸22の矩形状突出部38が
凹部40とロツク爪44との間に圧縮力を加えて
巻取軸22の巻出し回転を停止させるのでロツク
プレート34,36の強度は著しく大きく、ロツ
クプレート34,36が破壊する虞れは少ない。
さらにロツクプレート34,36と内歯ラチエツ
トホイル30との噛合いは一対のロツクプレート
が巻取軸22の軸心を中心として対称形に配置さ
れていることにより2ケ所でロツク力を生ずるこ
とになり、これによつてもロツク状態を安定にす
ることができる。 Since the lock plates 34 and 36 are arranged in opposite directions with respect to the axis of the winding shaft 22, no unbalance occurs during rotation, and in the locked state, the rectangular protrusion 38 of the winding shaft 22 applies a compressive force between the recess 40 and the lock pawl 44 to stop the unwinding rotation of the winding shaft 22, so the strength of the lock plates 34, 36 is extremely high, and there is no risk of the lock plates 34, 36 being destroyed. few.
Furthermore, the engagement between the lock plates 34 and 36 and the internally toothed ratchet wheel 30 generates locking force at two locations because the pair of lock plates are arranged symmetrically with respect to the axis of the winding shaft 22. , this also makes it possible to stabilize the lock state.
車両の緊急状態が終了した場合はウエビング2
4の若干の巻取りによつてロツクプレート34,
36が再び内歯ラチエツトホイル30から離間し
て第1図及び第3図図示状態となり通常の巻取装
置として使用可能である。 Webbing 2 if the vehicle's emergency status ends.
4 by winding up the lock plate 34,
36 is again separated from the internal toothed ratchet wheel 30 and becomes the state shown in FIGS. 1 and 3, and can be used as a normal winding device.
この場合、ロツク状態で幅広部52Bへ収容さ
れているピン46は幅広部52Bとの間に間隔を
有しているのでピン46が容易に幅挟部52A内
へ入り込むことができ、長穴52の幅寸法を全域
に亘つて幅挟部52Aと同等とした場合に発生す
るピン46と長穴52との間に食い込みを解消し
てピン46の移動を円滑にしている。なお幅挟部
52Aと幅広部52Bとの間の段部52Cは幅広
部52Bから幅挟部52Aへかけて次第に幅挟と
なるテーパー状としているのでさらにピン46を
容易に幅挟部52Aへ案内することができる。 In this case, since the pin 46 accommodated in the wide part 52B in the locked state has a space between it and the wide part 52B, the pin 46 can easily enter into the wide part 52A, and the elongated hole 52 This eliminates the jamming between the pin 46 and the elongated hole 52 that would otherwise occur if the width of the pin 46 is the same as that of the width sandwiching portion 52A over the entire area, thereby smoothing the movement of the pin 46. Note that the stepped portion 52C between the width sandwiched portion 52A and the wide width portion 52B is tapered so that the width gradually becomes narrower from the wide width portion 52B to the width sandwiched portion 52A, so that the pin 46 can be further easily guided to the width sandwiched portion 52A. can do.
以上説明した如く本考案に係るウエビング巻取
装置はフレームへ固着された内歯ラチエツトホイ
ルとこれに噛合うロツクメンバーとの組合わせを
用いるので巻取装置外径が小径となり、ロツクプ
レートから突出したピンとこれを収容するロツク
輪へ設けられた長穴とで構成する案内手段では長
穴に幅挟部と幅広部とを設けたためピンを隙間な
く収容して車両緊急時の応答性を安定させ、且つ
ピンと長穴間に加わる不要な荷重を解消してピン
又は長穴の破損を防止できる優れた効果を有す
る。 As explained above, the webbing retractor according to the present invention uses a combination of an internally toothed ratchet foil fixed to the frame and a lock member that meshes with this, so the outer diameter of the retractor is small, and the webbing retractor uses a combination of an internally toothed ratchet foil fixed to the frame and a lock member that meshes with the internal tooth ratchet foil. In the guide means consisting of an elongated hole provided in a locking wheel that accommodates the pin, the elongated hole has a narrow portion and a wide portion, so the pin is accommodated without any gaps, and the response of the vehicle in an emergency is stabilized. It has an excellent effect of eliminating unnecessary load applied between the pin and the elongated hole and preventing damage to the pin or the elongated hole.
第1図は本考案に係るウエビング巻取装置の実
施例を示す断面図、第2図は第1図左側面図、第
3図は第1図−線断面図、第4図はロツク機
構部を示す分解斜視図、第5図はロツク機構部の
ロツク状態を示す拡大図、第6図は慣性板を第1
図−線方向に見た側面図である。
10……巻取装置、12……フレーム、22…
…巻取軸、24……ウエビング、30……内歯ラ
チエツトホイル、34,36……ロツクプレー
ト、46……ピン、50……慣性板、52……長
穴、52A……幅挟部、52B……幅広部、56
……ラチエツト歯。
Fig. 1 is a sectional view showing an embodiment of the webbing retractor according to the present invention, Fig. 2 is a left side view of Fig. 1, Fig. 3 is a sectional view taken along the line of Fig. 1, and Fig. 4 is a locking mechanism section. FIG. 5 is an enlarged view showing the locking state of the locking mechanism, and FIG. 6 is an exploded perspective view showing the inertia plate in the first position.
It is a side view seen in the figure-line direction. 10... Winding device, 12... Frame, 22...
... Winding shaft, 24 ... Webbing, 30 ... Internal tooth ratchet foil, 34, 36 ... Lock plate, 46 ... Pin, 50 ... Inertia plate, 52 ... Elongated hole, 52A ... Width clamping part, 52B ...Wide part, 56
...Rachet teeth.
Claims (1)
ムへ軸支されて乗員拘束用ウエビングの一端を
巻取る巻取軸と、この巻取軸と同軸上に支持さ
れ車両緊急時に巻取軸に対して回転遅れを生ず
るロツク輪と、前記フレームへ固着された内歯
ラチエツトホイルと、前記巻取軸へ支持されこ
の巻取軸に対して第1の位置から第2の位置ま
で相対移動可能で第2の位置では前記内歯ラチ
エツトホイルと噛合つて巻取軸のウエビング巻
出方向回転を阻止するロツクメンバーと、前記
ロツクメンバーから突出したピン及びロツク輪
へ設けられる長穴を備えた案内手段と、を有し
前記長穴は前記ピンを収容し、前記ロツク輪の
回転遅れ時にロツクプレートを前記第1の位置
から第2の位置へ案内すると共にこの長穴には
前記ロツクメンバーの第1の状態で前記ピンを
緊密に収容する幅挟部及びロツクメンバーの第
2の状態で前記ピンを緩く収容する幅広部が設
けられたことを特徴としたウエビング巻取装
置。 (2) 前記ロツクプレートは前記巻取軸を挟んで一
対設けられ、前記案内手段により互に反対方向
へ移動可能に案内されることを特徴とした前記
実用新案登録請求の範囲第1項に記載のウエビ
ング巻取装置。 (3) 前記ロツク輪は車両緊急時に加速度センサー
によつて回転が阻止されることを特徴とした前
記実用新案登録請求の範囲第1項又は第2項に
記載のウエビング巻取装置。[Scope of Claim for Utility Model Registration] (1) A frame attached to the vehicle body, a take-up shaft that is pivotally supported by the frame and winds up one end of the occupant restraint webbing, and a vehicle that is supported coaxially with the take-up shaft. a locking wheel that causes rotational delay with respect to the winding shaft in an emergency; an internally toothed ratchet wheel fixed to the frame; and a latch wheel that is supported by the winding shaft and moves from a first position to a second position with respect to the winding shaft. a lock member that is relatively movable up to a second position and that engages with the internally toothed ratch foil to prevent rotation of the take-up shaft in the webbing unwinding direction; a pin protruding from the lock member; and a long hole provided in the lock ring. The elongated hole accommodates the pin and guides the lock plate from the first position to the second position when the rotation of the lock wheel is delayed. A webbing take-up device comprising: a wide nipping portion that tightly accommodates the pin in the first state of the lock member; and a wide portion that loosely accommodates the pin in the second state of the lock member. (2) As set forth in claim 1 of the utility model registration claim, the lock plates are provided as a pair with the winding shaft interposed therebetween, and are guided by the guide means so as to be movable in opposite directions. Webbing retractor. (3) The webbing retractor according to claim 1 or 2, wherein the locking wheel is prevented from rotating by an acceleration sensor in the event of a vehicle emergency.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13664581U JPS5843464U (en) | 1981-09-14 | 1981-09-14 | webbing retractor |
US06/402,583 US4463917A (en) | 1981-08-12 | 1982-07-28 | Webbing retractor |
GB08222058A GB2113073B (en) | 1981-08-12 | 1982-07-30 | Webbing retractor |
DE3228882A DE3228882C2 (en) | 1981-08-12 | 1982-08-03 | Seat belt retractors |
AU86922/82A AU558133B2 (en) | 1981-08-12 | 1982-08-06 | Seat belt retractor |
FR8213865A FR2511254B1 (en) | 1981-08-12 | 1982-08-09 | SAFETY BELT REEL FOR AUTOMOBILES |
SE8204626A SE452580B (en) | 1981-08-12 | 1982-08-09 | BELT ROLL FOR USE IN A SEAT BELT SYSTEM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13664581U JPS5843464U (en) | 1981-09-14 | 1981-09-14 | webbing retractor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5843464U JPS5843464U (en) | 1983-03-23 |
JPS6216113Y2 true JPS6216113Y2 (en) | 1987-04-23 |
Family
ID=29929964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13664581U Granted JPS5843464U (en) | 1981-08-12 | 1981-09-14 | webbing retractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5843464U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2642044B2 (en) * | 1993-08-19 | 1997-08-20 | 丸紅設備株式会社 | Long goods carrier |
-
1981
- 1981-09-14 JP JP13664581U patent/JPS5843464U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5843464U (en) | 1983-03-23 |
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