Seatbelt retractor and seatbelt system having the same

Abstract

A seatbelt retractor in which the thickness of the base end of a seatbelt in engagement with a spool is minimized so as to reduce the outside diameter of the spool comprises the spool (13) which includes a spool body (16) and a cylindrical member (17) placed in the spool body (16). The spool body (16) has an arc-shaped body (16f). With the cylindrical member (17) placed in the spool body (16), the interval between the inner circumferential surface (16f 1 ) of the body (16f) and the outer circumferential surface of the cylindrical member (17) is set substantially the same as the thickness of the seatbelt (6). The base end (6a) of the seatbelt (6) sandwiched between the body (16f) and the cylindrical member (17) in such a manner that an end of the seatbelt (6) is folded back is in engagement with the rim (16f 2 ) of the body (16f).

Description

Seat belt retractor and seat belt device having the same technical field The present invention relates to the technical field of a seat belt retractor and a seat belt device having the seat belt retractor. Seat belt device, utilizes the reel to wind up and pull out the seat belt. Background technique In the past, the seat belt device equipped on automobiles and other vehicles, in the event of a large deceleration of the vehicle in the event of a vehicle collision, restrains the occupant with the seat belt to prevent the occupant from inertial movement from the seat, thereby protecting crew. The safety belt device is provided with a safety belt retractor, which uses a reel to wind up and pull out the safety belt, and prevents the safety belt from being pulled out in an emergency. Among such seatbelt retractors, conventionally, a seatbelt retractor that uses a motor to wind up and pull out a seatbelt is disclosed (for example, refer to Patent Document 1). The seatbelt re...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to increase the outer diameter of the reel a, but when the outer diameter of the reel a increases, the reel a becomes larger, and as a result, there is a problem that the seat belt retractor also becomes larger.

In particular, in a seat belt retractor driven by a motor, in order to make the seat belt retractor compact, it is conceivable to accommodate the motor in the cylindrical spool a, but in this case, the spool a When the outer diameter becomes larger, it will greatly hinder the miniaturization of the seat belt

In addition, since the seat belt b must be inserted into the elongated through hole d in order to engage and hold the seat belt b on the reel a, there is a problem of poor operability.

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