JPH0210743B2

JPH0210743B2 -

Info

Publication number: JPH0210743B2
Application number: JP56158277A
Authority: JP
Inventors: Fueeru Arutsuuru
Original assignee: TRW Occupant Restraint Systems GmbH
Current assignee: TRW Occupant Restraint Systems GmbH
Priority date: 1980-10-06
Filing date: 1981-10-06
Publication date: 1990-03-09
Also published as: JPS57128169A

Description

【発明の詳細な説明】本発明は、自動安全ベルト装置用の引き締め機
構であつて、事故の際に作動する蓄力器を備え、
この蓄力器は可とう性の引き部材を介して引き部
材ローラと結合されており、引き部材ローラは、
通常運転の際にはベルト軸に連結されていない
が、蓄力器が作動すると、ベルト軸のクラツチ延
長部に向かつて半径方向に運動するクラツチ部材
を有するクラツチによつてベルト軸に連結される
形式のものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is a tightening mechanism for an automatic safety belt device, comprising a force accumulator activated in the event of an accident.
This force accumulator is connected via a flexible pulling member to a pulling member roller, the pulling member roller being
During normal operation it is not connected to the belt shaft, but when the energy store is actuated it is connected to the belt shaft by a clutch having a clutch member that moves radially towards the clutch extension of the belt shaft. Regarding formal matters.

このような形式の引き締め機構は、例えば衝突
事故のような危険時に、まず安全ベルトを引き戻
して、安全ベルトのたるみを除去し、安全ベルト
を人体にできるだけ密着させる。前述の形式の公
知の引き締め機構（ドイツ連邦共和国特許出願公
開第2809587号）においては、引き部材ローラの
クラツチ機構は、遠心力によつて、あるいは駆動
ピストンの作用による回転加速度によつて、操作
される。この場合、回転加速度が所定の値に達す
るまでは、クラツチは連結されない。 This type of tightening mechanism first pulls back the safety belt in the event of a danger, such as a collision, to remove slack in the safety belt and bring the safety belt as tightly as possible to the human body. In the known tensioning mechanism of the type mentioned above (DE 2809587), the clutching mechanism of the pulling member roller is actuated by centrifugal force or by rotational acceleration under the action of a drive piston. Ru. In this case, the clutch is not engaged until the rotational acceleration reaches a predetermined value.

本発明の目的は、前述の形式の引き締め機構を
改良して、構造をコンパクトにかつ製作費を安価
にし、しかも蓄力器の作動後、極めて短時間で引
き部材ローラとベルト軸とが確実に連結されるよ
うにすることである。 The object of the invention is to improve the tensioning mechanism of the type described above, to make it compact in structure and inexpensive to manufacture, and to ensure that the pulling member roller and the belt shaft are brought together within a very short time after activation of the force accumulator. The goal is to make sure that they are connected.

この目的を達成するための本発明の構成は、特
許請求の範囲第１項に記載したとおりである。ま
た本発明の有利な実施態様は特許請求の範囲第２
項以下に記載したとおりである。 The structure of the present invention for achieving this object is as described in claim 1. Advantageous embodiments of the invention are also defined in the second patent claim.
As described below.

本発明のようにせん断部材とクラツチ部材とが
協働することによつて、クラツチ部材は所定のせ
ん断力若しくは引き力が生じると強制的にベルト
軸のクラツチ延長部と係合せしめられる。この連
結運動は強制的に行われるものであつて、回転加
速度の値とは無関係であり、せん断部材が蓄力器
から発する駆動力に耐えられなくなつたときに、
確実に連結が行われる。必要な駆動力は、蓄力器
を適当な大きさに構成することによつて生ぜしめ
ることができる。要するに、本発明によるせん断
部材は二重の役割を有しており、引き部材ローラ
を係留するとともに、他面においてクラツチ部材
を強制的に運動させるのである。 The cooperation of the shear member and the clutch member of the present invention forces the clutch member into engagement with the clutch extension of the belt shaft when a predetermined shear or pull force is applied. This coupling motion is forcibly performed and has nothing to do with the value of rotational acceleration, and when the shearing member can no longer withstand the driving force generated from the force accumulator,
Concatenation is ensured. The required driving force can be generated by suitably sizing the force accumulator. In short, the shearing member according to the invention has a dual role: it anchors the pulling member roller and, on the other hand, forces the clutch member into motion.

以下においては、図面を参照しながら本発明の
構成を具体的に説明する。 In the following, the configuration of the present invention will be specifically explained with reference to the drawings.

第１図〜第４図に示した実施例においては、自
動安全ベルト装置１はＵ字形のケーシング２を有
しており、これは、孔３によつて例えば自動車の
フレームに固定することができる。ケーシング２
内にはベルト軸４が回転可能に支承されており、
このベルト軸４にはベルト５が巻き付けられてい
る。ベルト軸４は第２図・第３図及び第４図で見
て左側の軸端部を、周知の形式で事故の際に自動
的に作動する係止機構（これはカバー６によつて
覆われている）と作用的に結合されているととも
に、他方の端部を、カバー７によつて覆われてい
る巻き戻しばねと結合されている。ベルト軸４は
延長部（クラツチ延長部）８を有しており、この
延長部８は、巻き戻しばねのカバーを越えて突出
して、半径方向の歯９と半径方向の切り込み１０
とを有している。更にカバー７には３つのせん断
ピン１１が片持ち式に取り付けられており、これ
らのせん断ピンに引き部材ローラ１２が差しはめ
可能である。切り込み１０内にはめられたスナツ
プリング１３は自動安全ベルト装置の通常動作中
に引き部材ローラ１２に対して軸方向の間隔を有
しており、ベルト軸の回転を妨げることはない。
スナツプリング１３は、例えば事故の際の引き締
め機構の作動後に、引き部材ローラ１２を軸方向
で固定するためのものにすぎない。 In the embodiment shown in FIGS. 1 to 4, the automatic safety belt device 1 has a U-shaped casing 2, which can be fixed, for example, to the frame of a motor vehicle by means of holes 3. . Casing 2
A belt shaft 4 is rotatably supported inside.
A belt 5 is wound around this belt shaft 4. The belt shaft 4 has a locking mechanism (which is covered by a cover 6) that is automatically activated in the event of an accident, at the left end of the shaft as seen in FIGS. 2, 3, and 4. 7) and is connected at its other end to a rewinding spring, which is covered by a cover 7. The belt shaft 4 has an extension (clutch extension) 8 which projects beyond the cover of the rewinding spring and is provided with radial teeth 9 and radial notches 10.
It has Furthermore, three shear pins 11 are mounted in a cantilevered manner on the cover 7, onto which pull member rollers 12 can be inserted. The snap ring 13, which is seated within the notch 10, has an axial spacing relative to the pull member roller 12 during normal operation of the automatic safety belt system and does not interfere with rotation of the belt axis.
The snap spring 13 serves only to axially fix the pulling member roller 12 after actuation of the tightening mechanism, for example in the event of an accident.

ボビン状の引き部材ローラ１２の孔１５内に差
し込まれるとピン１４によつてロープ状の引き部
材１６のループ端部が固定されている。この引き
部材１６は引き部材ローラ１２に巻き付けられて
いる。引き部材ローラ１２は、半径方向の歯９を
間隔をもつて取り囲む軸方向の切り欠き１７を有
している。引き部材ローラ１２の円周に沿つて等
間隔で形成されている３つの切り欠き１８内に、
つめとして構成されたクラツチ部材１９が旋回可
能に支承されており、これらのクラツチ部材はば
ね２０によつて非連結位置若しくは不作用位置、
つまり歯状のつめ端部が半径方向の歯９から離れ
ている位置に押される。切り欠き１８は長孔状の
溝として形成されていて、クラツチ部材１９の旋
回ピン２１並びにせん断ピン１１を収容する。自
動安全ベルト装置の動作中に、引き部材１６に矢
印２２の方向の引き力が作用すると、引き部材ロ
ーラ１２が矢印２３の方向に回転し、クラツチ部
材１９がせん断ピン１１に当たり、ばね２０の力
に抗して旋回せしめられて、歯９と係合せしめら
れる。引き力が更に作用するとせん断ピン１１が
せん断し、これによつて連結部を介してベルト軸
４が逆転せしめられ、ベルトのたるみが除去され
る。引き部材１６は第１図〜第４図に示されてい
ない駆動装置（蓄力器）によつて駆動される。 When inserted into the hole 15 of the bobbin-like pulling member roller 12, the loop end of the rope-like pulling member 16 is fixed by the pin 14. This pulling member 16 is wound around the pulling member roller 12. The pull member roller 12 has an axial recess 17 surrounding the radial teeth 9 at a distance. In three notches 18 formed at equal intervals along the circumference of the pulling member roller 12,
Clutch elements 19, which are configured as pawls, are pivotably mounted, which can be moved by means of springs 20 into an uncoupled or inactive position;
This means that the toothed pawl ends are pushed away from the radial teeth 9. The recess 18 is designed as an elongated groove and accommodates the pivot pin 21 of the clutch member 19 as well as the shear pin 11. During operation of the automatic safety belt system, when a pulling force in the direction of arrow 22 is applied to the pulling member 16, the pulling member roller 12 rotates in the direction of arrow 23, the clutch member 19 hits the shear pin 11, and the force of the spring 20 is applied. is pivoted against the force and is brought into engagement with the teeth 9. Further application of the pulling force shears the shear pin 11, which reverses the belt axis 4 through the connection and removes the slack in the belt. The pulling member 16 is driven by a drive device (power accumulator) which is not shown in FIGS. 1-4.

つめの代わりに締め付けレバーを使用し、ベル
ト軸の滑らかなクラツチ延長部と協働させること
もできる。 Instead of a pawl, a tightening lever can also be used, cooperating with a smooth clutch extension on the belt shaft.

第５図には、引き部材１６が巻き付けられてい
る引き部材ローラ６９が概略的に示されている。
引き部材ローラ６９と、ベツト軸の延長部３５の
滑らかな外周面との間のクラツチ部材として、小
さなリングとして構成された転動体７０が役立
ち、この転動体７０は、自動安定ベルト装置の通
常動作中は不動である支承ピン７１に支承されて
保持されている。支承ピン７１はやはりせん断ピ
ンとして構成されていて、矢印７２の方向に充分
に大きな引き力が引き部材１６に対して作用せし
められると、せん断する。引き部材ローラ６９に
は、ローラ軸線に向かつてくさび状に接近してい
る制御軌道７３が形成されている。転動体７０
は、例えば自動安全ベルト装置のカバー７に形成
されている支承ピン７１に支承されていて、延長
部３５の外周面から間隔ａを有するような位置に
保持されているので、ベルト軸の回転を阻止しな
い。引き部材１６に矢印７２の方向に大きな引き
力が作用すると、支承ピン７１がせん断し、次い
で転動体はばね７４によつて傾斜した制御軌道７
３に沿つて押されて、延長部３５の外周面と接触
し、更にそれ以上引き力が作用すると制御軌道７
３と延長部３５の外周面との間に締め込まれ、し
たがつて延長部３５ひいてはベルト軸が逆方向に
回転せしめられて、安全ベルトが引き締められ
る。 FIG. 5 schematically shows a pull member roller 69 around which the pull member 16 is wound.
As a clutch element between the pull member roller 69 and the smooth outer circumferential surface of the extension 35 of the bed shaft, a rolling element 70 designed as a small ring serves, which during the normal operation of the self-stabilizing belt device The inside is supported and held by an immovable support pin 71. The bearing pin 71 is also designed as a shearing pin and will shear if a sufficiently large pulling force in the direction of the arrow 72 is applied to the pulling member 16 . The pulling member roller 69 is formed with a control track 73 that approaches the roller axis in a wedge-like manner. Rolling element 70
is supported, for example, by a support pin 71 formed on the cover 7 of the automatic safety belt device, and is held at a position with a distance a from the outer peripheral surface of the extension portion 35, so that rotation of the belt axis is prevented. Don't block it. When a large pulling force is applied to the pulling member 16 in the direction of the arrow 72, the bearing pin 71 is sheared and the rolling elements are then moved by the spring 74 to the inclined control track 7.
3 and comes into contact with the outer peripheral surface of the extension part 35, and when further pulling force is applied, the control track 7
3 and the outer peripheral surface of the extension part 35, and the extension part 35 and thus the belt shaft are rotated in the opposite direction, and the safety belt is tightened.

第６図〜第９図に示した実施例においては、第
５図に示した原理が採用されている。この場合引
き部材１６はやはりボビン状の引き部材ローラ６
９′に巻き付けられており、この引き部材ローラ
６９′はほぼ接線方向の孔１０９を有しており、
この孔内に引き部材の自由端部が差し込まれてい
る。第６図及び第８図から分かるように、引き部
材ローラ６９′は孔１０９に対して直角なねじ孔
１１０を有しており、このねじ孔は孔１０９と交
差していて、ねじピン１１１がねじ孔１１０内に
ねじ込まれており、このねじピン１１１によつて
引き部材端部が孔１０９とねじ孔１１０との交差
箇所で圧縮変形せしめられて、引き部材ローラ６
９′に固定されている。 In the embodiments shown in FIGS. 6 to 9, the principle shown in FIG. 5 is adopted. In this case, the pulling member 16 is again a bobbin-shaped pulling member roller 6.
9', this pulling member roller 69' has a generally tangential hole 109;
The free end of the pull member is inserted into this hole. As can be seen in FIGS. 6 and 8, the pull member roller 69' has a threaded hole 110 perpendicular to the hole 109, which threaded hole intersects the hole 109, and has a threaded pin 111. The screw pin 111 compresses and deforms the end of the pulling member at the intersection of the hole 109 and the screw hole 110, and the pulling member roller 6
It is fixed at 9'.

更に、延長部３５′は外周面に歯１１２を有し
ていて、これに、中間ブツシユ１１３が回転不能
に取り付けられている。滑らかな外周面を有して
いる中間ブツシユ１１３はボス状に構成されてい
て、軸方向の孔１１５を形成されているフランジ
１１４を一体的に有している。フランジ１１４を
有する中間ブツシユ１１３はねじ１１６によつて
延長部３５′に固定されており、この場合延長部
３５′はねじ孔１１６′を有している。自動安全ベ
ルト装置の通常の動作中はフランジ１１４は引き
部材ローラ６９′の端面からわずかな間隔を有し
ている（第７図）。また、引き部材ローラ６９′は
支承ピン７１′によつて回転を阻止されており、
この支承ピン７１′は、ころ状の転動体７０を回
転可能に支承していて、カバー７に一体に形成さ
れているプラスチツク製の細いピンとして構成さ
れている。更に、付加的なせん断ピン７１″が設
けられており、これは、やはりカバー７に形成さ
れていて、引き部材ローラ６９′に対する係留力
を決定する。せん断ピン７１″は、第７図に示す
ように、引き部材ローラ６９′が装着された後に
自由端部を変形せしめられる。せん断ピン７１″
を通すために引き部材ローラ６９′に孔１１７が
形成されている。転動体７０は、自動安全ベルト
装置が通常に動作しているときには制御軌道７
３′の、回転軸線から最も離れた端部若しくは角
のところに位置していて、延長部３５′に対して
引き部材ローラ６９′を心出しし、転動体７０と
中間ブツシユ１１３の外周面との間にある程度の
間隔を生ぜしめる。引き締め機構が作動せしめら
れた、引き部材１６に引き力が作用し、引き部材
ローラ６９′にトルクが作用せしめられると、ま
ず、支承ピン７１′が弾性的に変形し、せん断ピ
ン７１″と共にせん断する。矢印１１８の方向で
引き部材１６に加速力が作用する際の慣性力に基
づいて引き部材ローラ６９′と中間ブツシユ１１
３とが直ちに連結される。この場合、転動体７０
は制御軌道７３′に沿つて転動して、中間ブツシ
ユ１１３の外周面と接触する。中間ブツシユ１１
３のフランジ１１４は引き部材ローラ６９′を軸
方向で押さえる作用をする。 Furthermore, the extension 35' has teeth 112 on its outer circumferential surface, to which an intermediate bushing 113 is non-rotatably mounted. The intermediate bush 113, which has a smooth outer circumferential surface, is designed in the shape of a boss and integrally has a flange 114 in which an axial hole 115 is formed. An intermediate bushing 113 with a flange 114 is fastened to an extension 35' by screws 116, the extension 35' having a threaded bore 116'. During normal operation of the automatic safety belt system, flange 114 is spaced a short distance from the end face of puller roller 69' (FIG. 7). Further, the pulling member roller 69' is prevented from rotating by a bearing pin 71'.
This support pin 71' rotatably supports the roller-shaped rolling element 70, and is configured as a thin plastic pin integrally formed with the cover 7. Furthermore, an additional shear pin 71'' is provided, which is also formed on the cover 7 and determines the anchoring force on the pulling member roller 69'.The shear pin 71'' is shown in FIG. As such, the free end is deformed after the pull member roller 69' is installed. Shear pin 71″
A hole 117 is formed in the pull member roller 69' for passage of the pull member roller 69'. The rolling elements 70 move along the control track 7 during normal operation of the automatic safety belt system.
3' at the end or corner furthest from the axis of rotation, centering the pulling member roller 69' with respect to the extension 35', and aligning the outer peripheral surfaces of the rolling elements 70 and the intermediate bushing 113 with each other. This creates a certain amount of space between them. When the tightening mechanism is activated and a pulling force is applied to the pulling member 16 and a torque is applied to the pulling member roller 69', the support pin 71' is first elastically deformed and sheared together with the shearing pin 71''. The pulling member roller 69' and the intermediate bush 11 are connected to each other based on the inertial force when an acceleration force is applied to the pulling member 16 in the direction of arrow 118.
3 are immediately connected. In this case, the rolling element 70
rolls along the control track 73' and comes into contact with the outer peripheral surface of the intermediate bush 113. Intermediate bush 11
The flange 114 of No. 3 functions to press down the pulling member roller 69' in the axial direction.

第１０図〜第１３図に示した実施例において
は、自動安全ベルト装置のＵ字形のケーシング２
の側板２′に並んで引き部材ローラ１６９が配置
されており、これはベルト軸の、側板２′から突
出している延長部１３５に回転可能に支承されて
いる。引き部材ローラ１６９は外周面に引き部材
１６を巻き付けられており、引き部材１６は孔２
０９内で固定されている。延長部１３５よりも直
径が大きい支承孔１２０には３つの切り欠きが等
間隔で形成されており、この切り欠きは、ローラ
軸線に向かつて傾斜している制御軌道１７３を形
成している。支承孔１２０と延長部１３５との間
には、熱可塑性材料から成るブツシユ状の保持器
１２１があり、これは、制御軌道１７３と同じピ
ツチで窓状の３つの開口１２２を有しており、こ
の開口内にはころ状の転動体１２３が保持されて
いる。第１２図に示すように保持器１２１は、ば
ね状の薄い付加部１２４を有しており、これは、
開口１２２内に突入していて、転動体１２３を、
半径方向で外方に向かつて、引き部材ローラ１６
９の制御軌道１７３に押し付けている。このよう
な付加部を設ける代わりに、開口１２２の寸法を
転動体１２３の寸法よりも幾分か小さくしておく
こともできる。 In the embodiment shown in FIGS. 10 to 13, the U-shaped casing 2 of the automatic safety belt device
Arranged next to the side plate 2' is a pulling member roller 169, which is rotatably mounted on an extension 135 of the belt shaft projecting from the side plate 2'. The pulling member roller 169 has the pulling member 16 wrapped around its outer peripheral surface, and the pulling member 16 is attached to the hole 2.
It is fixed within 09. The bearing hole 120, which has a larger diameter than the extension 135, is formed with three cutouts at equal intervals, which cutouts form a control track 173 that is inclined towards the roller axis. Between the bearing hole 120 and the extension 135 there is a bush-like retainer 121 made of thermoplastic material, which has three window-like openings 122 of the same pitch as the control track 173; A roller-shaped rolling element 123 is held within this opening. As shown in FIG. 12, the retainer 121 has a spring-like thin addition 124, which
It has protruded into the opening 122 and the rolling element 123 is
Radially outwardly, the pulling member rollers 16
It is pressed against the control track 173 of No. 9. Instead of providing such an additional part, the dimensions of the opening 122 can also be made somewhat smaller than the dimensions of the rolling element 123.

保持器１２１は、軸平行の３つのせん断部材１
２５を有しており、このせん断部材は、側板２′
に相応する３つの開口１２６内に突入していて、
所定のトルク若しくはせん断モーメントが生ずる
までは、引き部材ローラ１６９を側板２′に回転
不能に結合している。引き部材ローラ１６９はや
はり所定のトルクが生ずるまでは、側板２′の孔
１７１′内に差し込まれるせん断ピン１７１によ
つて、側板２′に回転不能に結合されている。延
長部１３５に接続してベルト軸は、連行スリツト
１２８を備えた小径の突出部１２７を有してい
て、これに、ベルト巻き戻しばね１２９が取り付
けられている。引き部材ローラ１６９及び戻しば
ね１２９はカバー１３０によつて取り囲まれてお
り、このカバーは、戻しばねと引き部材ローラと
の間に中間壁１３１を有している。 The cage 121 has three shear members 1 parallel to the axis.
25, and this shearing member is connected to the side plate 2'
protrudes into three openings 126 corresponding to the
The pull member roller 169 is non-rotatably coupled to the side plate 2' until a predetermined torque or shear moment is developed. The pull member roller 169 is again non-rotatably connected to the side plate 2' by a shear pin 171 inserted into a hole 171' in the side plate 2' until a predetermined torque is developed. Connected to the extension 135, the belt shaft has a small-diameter projection 127 with a driving slot 128, to which a belt unwinding spring 129 is attached. The pull member roller 169 and the return spring 129 are surrounded by a cover 130, which has an intermediate wall 131 between the return spring and the pull member roller.

引き部材１６に矢印Ａの方向に突然引き力が作
用して、引き部材ローラ１６９にトルクが作用す
ると、せん断ピン１７１がせん断する。この場合
保持器１２１と引き部材ローラ１６９との間に相
対運動が行われ、転動体１２３が保持器１２１内
で制御軌道１７３に沿つて非連結位置からのロー
ラ軸線に向かつて動き、延長部１３５に係合す
る。これによつてせん断部材１２５もせん断し
て、引き締め運動が開始される。 When a pulling force is suddenly applied to the pulling member 16 in the direction of arrow A and torque is applied to the pulling member roller 169, the shear pin 171 is sheared. In this case, a relative movement takes place between the cage 121 and the pull member rollers 169, the rolling elements 123 move within the cage 121 along the control track 173 towards the roller axis from the uncoupled position, and the extensions 135 engage with. As a result, the shearing member 125 is also sheared, and the tightening movement is started.

[Brief explanation of drawings]

第１図は第１実施例の側面図、第２図は第１実
施例の正面図、第３図は第１実施例の斜視図、第
４図は第１実施例の分解図、第５図は第２実施例
の概略図、第６図は第３実施例の横断面図、第７
図は第６図のXIVB−XIVB線に沿つた縦断面
図、第８図は第６図のXIVC−XIVC線に沿つた
部分的縦断面図、第９図は第３実施例の分解図、
第１０図は第４実施例の横断面図、第１１図は第
４実施例の縦断面図、第１２図は第４実施例の保
持器の部分的拡大横断面図、第１３図は第４実施
例の分解図である。１……自動安全ベルト、２……ケーシング、
２′……側板、３……孔、４……ベルト軸、５…
…ベルト、６及び７……カバー、８……延長部、
９……歯、１０……切り込み、１１……せん断ピ
ン、１２……引き部材ローラ、１３……スナツプ
リング、１４……ピン、１５……孔、１６……引
き部材、１７及び１８……切り欠き、１９……ク
ラツチ部材、２０……ばね、２１……旋回ピン、
２２及び２３……矢印、３５及び３５′……延長
部、６９及び６９′……引き部材ローラ、７０…
…転動体、７１及び７１′……支承ピン、７１″…
…せん断ピン、７３及び７３′……制御軌道、７
４……ばね、１０９……孔、１１０……ねじ孔、
１１１……ねじピン、１１２……歯、１１３……
中間ブツシユ、１１４……フランジ、１１５……
孔、１１６……ねじ、１１６′……ねじ孔、１１
７……孔、１２１……保持器、１２２……開口、
１２３……転動体、１２４……付加部、１２５…
…せん断部材、１２６……開口、１２７……突出
部、１２８……連行スリツト、１２９……戻しば
ね、１３０……カバー、１３１……中間壁、１３
５……延長部、１６９……引き部材ローラ、１７
１……せん断ピン、１７１′……孔、１７３……
制御軌道、２０９……孔。 Fig. 1 is a side view of the first embodiment, Fig. 2 is a front view of the first embodiment, Fig. 3 is a perspective view of the first embodiment, Fig. 4 is an exploded view of the first embodiment, and Fig. 5 is an exploded view of the first embodiment. The figure is a schematic diagram of the second embodiment, FIG. 6 is a cross-sectional view of the third embodiment, and FIG.
The figure is a longitudinal sectional view taken along the line XIVB-XIVB in Fig. 6, Fig. 8 is a partial longitudinal sectional view taken along the line XIVC-XIVC in Fig. 6, and Fig. 9 is an exploded view of the third embodiment.
FIG. 10 is a cross-sectional view of the fourth embodiment, FIG. 11 is a vertical cross-sectional view of the fourth embodiment, FIG. 12 is a partially enlarged cross-sectional view of the cage of the fourth embodiment, and FIG. 13 is a cross-sectional view of the cage of the fourth embodiment. It is an exploded view of 4th Example. 1...Automatic safety belt, 2...Casing,
2'... Side plate, 3... Hole, 4... Belt shaft, 5...
...Belt, 6 and 7...Cover, 8...Extension part,
9...teeth, 10...notch, 11...shear pin, 12...pull member roller, 13...snap spring, 14...pin, 15...hole, 16...pull member, 17 and 18...cut Notch, 19...Clutch member, 20...Spring, 21...Swivel pin,
22 and 23... arrows, 35 and 35'... extensions, 69 and 69'... pulling member rollers, 70...
...Rolling elements, 71 and 71'...Support pin, 71''...
...shear pins, 73 and 73'...control track, 7
4... Spring, 109... Hole, 110... Screw hole,
111... Screw pin, 112... Teeth, 113...
Intermediate bushing, 114...Flange, 115...
Hole, 116...Screw, 116'...Screw hole, 11
7...hole, 121...retainer, 122...opening,
123...Rolling element, 124...Additional part, 125...
... shearing member, 126 ... opening, 127 ... protrusion, 128 ... entrainment slit, 129 ... return spring, 130 ... cover, 131 ... intermediate wall, 13
5... Extension portion, 169... Pulling member roller, 17
1...Shear pin, 171'...hole, 173...
Control trajectory, 209... hole.

Claims

[Scope of Claims] 1. A tightening mechanism for an automatic safety belt device, comprising a force accumulator activated in the event of an accident, the force accumulator being coupled to a pull member roller via a flexible pull member. The pull member roller is connected to a clutch having a clutch member which is not connected to the belt shaft during normal operation, but which moves radially towards the clutch extension of the belt shaft when the energy store is actuated. Shearing members 11, 71, 71', 12
The clutch member 19; 70; 123, which is attached to the casing 2 by means of 5, presses against the clutch extension 8; A tightening mechanism for an automatic safety belt device, characterized in that the tightening mechanism is adapted to be tightened and engaged. 2 Shear member (shear pin 1) is attached to casing 2.
1), this shearing member projects into the trajectory of movement of the clutch member 19, which is held in the uncoupled position by a spring 20, and when the rotation of the pull member roller 12 begins, the clutch member 19
2. A tightening mechanism according to claim 1, which presses the tightening mechanism into the engagement position. 3. Tightening mechanism according to claim 1, characterized in that the clutch is constructed as a pawl clutch, the clutch extension (8) of which has radial teeth (9). 4. Claim 1, in which the clutch is constructed as a one-way clutch with a tightening lever.
Tightening mechanism as described in section. 5. The clutch member 19, which is supported on the pull member roller 12, is supported in the uncoupled position by a shearing member configured as a shearing pin 11. The tightening mechanism according to item 1. 6. Tightening mechanism according to claim 1, characterized in that the clutch is constructed as a one-way clutch with tightening rolling elements (123). 7. Tightening mechanism according to claim 6, in which a retainer 121 is provided for supporting the rolling elements 123, which is radially flexible and is attached to the casing 2 by means of shear members 125. 8 The bush-shaped or ring-shaped retainer 121 is
For the rolling element 123, it has a window-like opening 122 distributed along the circumference, into which a spring-like extension 124 projects which pushes the rolling element towards the uncoupled position. Claim No. 7
Tightening mechanism as described in section. 9 Shearing members 125 are provided distributed along the circumference of the cage 121, and the shearing members allow the cage 121 to close to the side plate 2' of the casing 2.
The tightening mechanism according to claim 7, which is attached to the tightening mechanism.