JPH0442461U

JPH0442461U -

Info

Publication number: JPH0442461U
Application number: JP8473590U
Authority: JP
Priority date: 1990-08-10
Filing date: 1990-08-10
Publication date: 1992-04-10

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係るプリロード
装置を示す分解斜視図、第２図は第１実施例に係
る車両の通常走行状態におけるプリロード装置の
クラツチ機構を示す一部切欠いた正面図、第３図
は第２実施例に係る車両の通常走行状態における
プリロード装置のクラツチ機構を示す一部切欠い
た正面図、第４図は第３実施例に係る車両の通常
走行状態におけるプリロード装置のクラツチ機構
を示す一部切欠いた正面図、第５図は第４実施例
に係る車両の通常走行状態におけるプリロード装
置のクラツチ機構を示す一部切欠いた正面図であ
る。１８……巻取軸、３２……ラチエツトホイール
（連結部材）、４４……回転ドラム、５０……係
止部材、５６……パウルレバー（回転力伝達部材
）、６０……ピン（保持手段）、６６……ワイヤ
（駆動力伝達部材）、６９……クリツプ（制動手
段）、７１……シエアピン（破断部材）、７０…
…シリンダ（駆動手段）、８０……摺動抵抗部（
制動手段）、８２……ピン（破断部材）、８６…
…ブレーキドラム（連結部材）、８８……ブレー
キシユー（回転力伝達部材）、９２……ねじりコ
イルばね（保持手段）。 FIG. 1 is an exploded perspective view showing a preload device according to a first embodiment of the present invention, and FIG. 2 is a partially cutaway front view showing a clutch mechanism of the preload device in a normal running state of a vehicle according to the first embodiment. , FIG. 3 is a partially cutaway front view showing the clutch mechanism of the preload device in the normal running state of the vehicle according to the second embodiment, and FIG. 4 is a partially cutaway front view showing the clutch mechanism of the preload device in the normal running state of the vehicle according to the third embodiment. FIG. 5 is a partially cutaway front view showing the clutch mechanism of the preload device in a normal running state of the vehicle according to the fourth embodiment. 18... Winding shaft, 32... Ratchet wheel (connection member), 44... Rotating drum, 50... Locking member, 56... Pawl lever (rotational force transmission member), 60... Pin (holding means) , 66... wire (driving force transmission member), 69... clip (braking means), 71... shear pin (breaking member), 70...
...Cylinder (driving means), 80...Sliding resistance part (
braking means), 82... pin (breaking member), 86...
... Brake drum (connection member), 88 ... Brake shoe (rotational force transmission member), 92 ... Torsion coil spring (holding means).

Claims

[Scope of utility model registration request]

A preload device used in a webbing take-up device that winds occupant restraint webbing onto a take-up shaft, and is used to tightly attach the webbing to the occupant, and is connected to the take-up shaft and rotates together with the take-up shaft. a connecting member, a rotating drum disposed coaxially with the connecting member and rotatable relative to the connecting member, a breaking member fixing the rotating drum to a frame of a webbing take-up device, and a connecting member attached to the rotating drum. a rotational force transmitting member that can be engaged with the connecting member and transmits the rotational force of the rotating drum to the connecting member and rotates together with the rotating drum; and the rotating force transmitting member is connected to the connecting member. a holding means for holding in a non-engaging position; and a holding means wrapped around the rotating drum to tighten the rotational force transmitting member to engage the connecting member and the rotational force transmitting member, and then moving the rotating drum in the webbing winding direction. a driving force transmitting member to be rotated; a braking means for slidably holding an end of the driving force transmitting member and generating a tensile force on the driving force transmitting member; and a braking means provided on the rotating drum and detached from the holding means. A preload device comprising: a locking member that locks an end of the driving force transmitting member to transmit driving force to the rotating drum; and a driving means that applies driving force to the driving force transmitting member when the vehicle suddenly decelerates.