JPS634764U - - Google Patents

Description

[Brief Description of the Drawings] Fig. 1 is a partially sectional front view showing an embodiment of a webbing retractor for a seat belt device according to the present invention;
Fig. 2 is a view corresponding to Fig. 1 as seen from the - line, Fig. 3 is a view corresponding to Fig. 1 as seen from the - line, Fig. 4 is an exploded perspective view of the main part of Fig. A detailed perspective view of a part of the figure, FIGS. 6 to 11 correspond to FIG. 3, and operation explanatory views explaining the operation of this embodiment, and FIGS. 12 and 13 correspond to FIG. 2. FIG. 14 is a side view of a seat belt device to which this embodiment is applied. DESCRIPTION OF SYMBOLS 10... Webbing, 12... Webbing winding device, 24... Winding shaft, 26... Frame, 32... Adapter, 34... Large mainspring spring case, 36... Large mainspring spring (winding shaft biasing means), 38... Small mainspring Spring case (first rotating body), 110... plate (
2nd rotating body), 40...Small mainspring spring (mainspring for controlling the second rotating body), 112...Ratchet foil (3rd rotating body), 114...1st pole (relative movement blocking means for rotating body), 118...Elongated hole ( rotating body relative movement prevention means guide means), 120... tension coil spring (second rotating body urging means), 50... cam drum (first cam means), 54... cam plate (second cam means), 80... Ratchet wheel, 82...Second pole (first
rotating body rotation prevention means), 84... tension coil spring (
(first rotating body rotation preventing means urging means), 92...lever (first rotating body rotation preventing means moving means).

Claims (1)

[Scope of utility model registration request] A take-up shaft for winding the webbing, a take-up shaft biasing means for urging the take-up shaft in the webbing winding direction, and a take-up shaft biasing means arranged coaxially with the take-up shaft and capable of rotating independently of the take-up shaft. a first rotating body, a second rotating body that is arranged coaxially with the winding shaft and can rotate independently of the winding shaft;
a second rotating body urging means for urging the second rotating body in the webbing winding direction with respect to the first rotating body; On the other hand, a second rotating body control mainspring spring is arranged to bias the second rotating body in the webbing winding direction, and a second rotating body control mainspring spring is arranged coaxially with the winding shaft and rotates integrally with the winding shaft. a third rotating body that is pivotally supported and swung by the first rotating body and engages with the third rotating body to prevent relative movement of the third rotating body in the webbing winding direction with respect to the first rotating body; A moving body relative movement prevention means;
When the second rotating body is provided on the second rotating body and moves relative to the first rotating body in the webbing winding direction, the rotating body relative movement blocking means is guided in a direction in which it engages with the third rotating body. 2. A rotating body relative movement preventing means guide means that guides the rotating body relative movement preventing means in the opposite direction when the rotating body relatively moves in the opposite direction, and a first rotating body that engages with the first rotating body and guides the rotating body relative movement preventing means in the opposite direction. First rotating body rotation preventing means for preventing rotation of the rotating body; and first rotating body rotation preventing means urging the first rotating body rotation preventing means in a direction to engage with the first rotating body. means and the first
Engaged with the rotating body by frictional force and rotated via the first rotating body during webbing unwinding following webbing winding immediately after the webbing is attached, and the first rotating body rotation prevention means engages with the first rotating body. a first cam means that is engaged with the first cam means and is rotated via the first cam means during webbing unwinding for webbing attachment and subsequent webbing retrieval immediately after webbing attachment; a second cam means for controlling the engagement of the first rotating body rotation prevention means with the first cam means; The moving body rotation blocking means is brought into a state in which it can be engaged with the first rotating body, and the engagement of the first rotating body rotation blocking means with the first rotating body is released in conjunction with the opening operation of the door or the webbing release operation. A webbing retractor for a seat belt device, comprising: a first rotating body rotation preventing means moving means.