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Patent Searching and Data

Document Type and Number:
Japanese Patent JP4640963
Kind Code:
In order to provide a motor-driven seatbelt retractor in which the temporary weight during withdrawing a seatbelt is reduced so that uncomfortability can be reduced, when a seatbelt is off, projections (21) of an internal gear (17) are placed in a circumferential center between adjacent projections (25) by the spring force of springs (26, 27). When a spool (13) rotates in the belt withdrawing direction, the internal gear (17) also rotates in the belt withdrawing direction. This arrangement disables the transmission of power of a reduction mechanism (15) so as to cut off the direct connection between the spool (13) and an electric motor connected to a sun gear (16), so that the temporary weight during withdrawing the seatbelt can be reduced. When the internal gear (17) rotates at a predetermined angle, the projections (21) come into contact with the projections (25) to thereby stop the rotation of the internal gear (17). This enables the transmission of power of the reduction mechanism (15), whereby the spool (13) and the electric motor are brought into direct connection via the reduction mechanism (15).

Yasutoshi Nomura
Application Number:
Publication Date:
March 02, 2011
Filing Date:
August 04, 2005
Export Citation:
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TAKATA(Europe)Vehicle Safety Technology GmbH
International Classes:
B60R22/46; F16H1/28; H02K7/116
Domestic Patent References:
Attorney, Agent or Firm:
Kenji Aoki
Ryukichi Abe
Hirukawa Masanobu
Norihiko Uchida
Hideo Sugai
Hiroshi Nagisawa
Akira Yonezawa

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