초록 ▼

A webbing tension adjusting apparatus for use in a webbing retractor employed in a seatbelt system for a vehicle which is arranged such that one end of an occupant restraining webbing is secured to a door of the vehicle and such that it is possible for an occupant of the vehicle to be automatically

A webbing tension adjusting apparatus for use in a webbing retractor employed in a seatbelt system for a vehicle which is arranged such that one end of an occupant restraining webbing is secured to a door of the vehicle and such that it is possible for an occupant of the vehicle to be automatically secured by the webbing simply by closing the door. When the door is opened, a resilient member for winding up the webbing is disengaged from a takeup shaft by a clutch means, whereby the biasing force of the resilient member which has been applied to the takeup shaft is cancelled. There is therefore no possibility that the webbing which is being wound off from the webbing retractor in response to the door opening operation may rub strongly against the body of the occupant.

대표청구항 ▼

A webbing tension adjusting apparatus for use in a seatbelt system designed to protect an occupant of a vehicle, said apparatus comprising: (a) a frame secured to the body of said vehicle; (b) a takeup shaft rotatably supported by said frame to wind up an occupant restraining webbing; (c) a spring c

A webbing tension adjusting apparatus for use in a seatbelt system designed to protect an occupant of a vehicle, said apparatus comprising: (a) a frame secured to the body of said vehicle; (b) a takeup shaft rotatably supported by said frame to wind up an occupant restraining webbing; (c) a spring case supported by said frame; (d) a spiral spring housed in said spring case and having its outer end retained by said spring case; (e) a rotating shaft connected with the inner end of said spiral spring; (f) a clutch plate connected to said rotating shaft to receive the biasing force of said spiral spring, said clutch plate being movable relative to said rotating shaft in the axial direction thereof; (g) engagement means provided between said clutch plate and said takeup shaft to transmit the biasing force of said spiral spring to said takeup shaft; (h) driving means for moving said clutch plate relative to said rotating shaft in the axial direction thereof when an associated door is opened to thereby disengage said engagement means, whereby it is possible for said door to be smoothly opened, and the friction occurring between said webbing and the body of said occupant is reduced; and (i) winding means for winding up said spiral spring by driving said spring case.