摘要:
To provide a seat belt retractor (1) that meets the recent needs and can optimize the energy absorption characteristics easily the retractor (1) has a spool (4) for winding a seat belt (3), a torsion bar (5) formed of material that can be twisted and deformed, a locking mechanism (7) for preventing the spool (4) from rotating at least in the direction of unwinding the seat belt (3), a ring (19) disposed inside an end portion of the spool (4), and a plate member (20) which can be twisted and deformed. A first end (20a) of the plate member (20) is fixed to the periphery of the ring (19). A second end (20b) of the plate member (20) is engaged with the internal surface of the thick cylinder portion (4b) of the spool (4) so as to be capable of being disengaged.
摘要:
When attempt is made to insert a fitting-shaft section (98) into a fitting-hole section (120) in a state where phases of the fitting-shaft section (98) of a spring-screw and the fitting-hole section (120) of an adapter (116) about a central-axis line of a spool-body (18) are not matched, shaft-section-side inclined-surfaces (104) formed at shaft-section-side protrusions abut to hole-section-side inclined-surfaces formed at hole-section-side protrusions (102), so the shaft-section-side inclined-surfaces (104) press the hole-section-side inclined-surfaces (124) in such a direction inclined in a pull-out direction to a projecting-direction of a shaft-section body from a flange section (96). The adapter (116) having received a pressing force generated by this pressing at the hole-section-side inclined-surfaces (124) has rotated in the pull-out direction, and then the phases of the fitting-hole section (120) and the fitting-shaft (98) section have aligned about the central-axis line of the spool-body (18), each shaft-section-side protrusion (102) intrudes into a gap between the hole-section-side protrusions (124) adjacent to each other, and the fitting-shaft section (98) fits into the fitting-hole section (120).
摘要:
A seat belt retractor (10) has a spool (14) for seat belt protraction and retraction. An energy absorption mechanism (18) is provided for absorbing energy from the spool (14) during seat belt protraction. The energy absorption mechanism (18) has a first part (22) for a relatively high rate of energy absorption and a second part (26) for a relatively low rate of energy absorption. A shift mechanism (30) for shifting between the first part (22) and the second part (26) is also provided. The shift mechanism (30) is a link movable between a first link position (34) wherein the first part (22) is engaged with the spool (14) and a second link position (38) wherein the second part (26) is engaged with the spool (14). The link is drivable between the first link position (34) and the second link position (38) by energy from seat belt protraction.
摘要:
In order to provide a seat belt retractor (1) and a seat belt apparatus (100) capable of avoiding abrupt change in EA load so as to optimize the EA load, a ring (19) of the retractor (1) has a first reducing radius portion (32) of which radius gradually reduces toward the downstream in a winding direction of a plate member (20) onto the ring (19), and a second reducing radius portion (33) which is located on the downstream side in the winding direction relative to the first reducing radius portion (32) and where the reducing degree of the radius is greater than that of the first reducing radius portion (32). In addition, a large-diameter cylindrical portion (4b) of a spool (4) has a convexity (30) which is formed on the inner periphery of the large-diameter cylindrical portion (4b) and of which contact face (30a) comes in contact with the end of the other end portion (20b) of the plate member (20) so as to stop the plate member (20) and a concavity (35) which is formed in the inner periphery of the large-diameter cylindrical portion (4b) and is located at the side of the contact face (30a) of the convexity (30).
摘要:
A seat belt retractor (10) has a spool (14) for seat belt protraction and retraction. An energy absorption mechanism (18) is provided for absorbing energy from the spool (14) during seat belt protraction. The energy absorption mechanism (18) has a first part (22) for a relatively high rate of energy absorption and a second part (26) for a relatively low rate of energy absorption. A shift mechanism (30) for shifting between the first part (22) and the second part (26) is also provided. The shift mechanism (30) is a link movable between a first link position (34) wherein the first part (22) is engaged with the spool (14) and a second link position (38) wherein the second part (26) is engaged with the spool (14). The link is drivable between the first link position (34) and the second link position (38) by energy from seat belt protraction.