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Seatbelt retractor has ratio of distance of top of projection of waveform and axial center of torsion bar spring with distance of bottom of recess and axial center, which is set between 1.2 to 1.3
Seatbelt retractor has ratio of distance of top of projection of waveform and axial center of torsion bar spring with distance of bottom of recess and axial center, which is set between 1.2 to 1.3
The connection section of a torsion bar spring (61) is fitted to the recess of the rocking base of a lock unit (5). Another connection section (65) is fitted to the recess (49) of a reel (4). The ratio of the distance of the top of projection of a waveform and the axial center of the spring with the distance of the bottom of recess and the axial center of the spring is set between 1.2 to 1.3.
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