Abstract: In a seat belt device for an automobile, according to a through anchor of the present invention, a groove provides the boundary part between a molded part and a resin piece. Thereby, the boundary between the molded part and the resin piece is disposed inside the groove without conspicuousness. Moreover, a projection part of a mold for forming the groove is disposed between the synthetic resin materials comprising the resin piece and the molded part when molding the molded part. Accordingly, the heat of the molten synthetic resin material comprising the molded part is not transmitted directly to the resin piece on the surface of the through anchor.

Abstract: In a seat belt device for an automobile, according to a through anchor of the present invention, a groove provides the boundary part between a molded part and a resin piece. Thereby, the boundary between the molded part and the resin piece is disposed inside the groove without conspicuousness. Moreover, a projection part of a mold for forming the groove is disposed between the synthetic resin materials comprising the resin piece and the molded part when molding the molded part. Accordingly, the heat of the molten synthetic resin material comprising the molded part is not transmitted directly to the resin piece on the surface of the through anchor.

Abstract: A through anchor in which residual stress caused by thermal contraction is dispersed so as to reduce risk of crack formation in a resin molding portion. The through anchor includes a metal plate and a resin molding portion covering a portion of the metal plate. Usually, residual stress due to thermal contraction (shrinkage) differences between the resin molding portion and the metal plate is high in regions near both ends of the boundary between the resin molding portion and the metal plate. A notch portion is formed in each of the regions so as to expose a portion of the outer peripheral portion of the metal plate covered by the resin molding portion to the outside environment. Accordingly, although the resin molding portion thermally contracts after insert molding, the contraction of the resin molding portion is not retarded as much by the outer peripheral portion of the metal plate due to the outer peripheral portion of the metal plate being exposed.

Abstract: An acceleration sensor apparatus for a vehicle capable of properly detecting an acceleration acting on a vehicle body in a predetermined direction even when the mounted orientation of the acceleration sensor apparatus changes relative to the vehicle body, and capable of providing an output operation when the vehicle body tilts more than a predetermined angle. A sensor housing is fixed on a vehicle body such as on a seatback. A sensor bracket is swingably supported by the sensor housing about an axis parallel to an axis of tilt of the seatback. An inertial body is movably supported in a support depression of the sensor bracket. An output interlock member provides an output operation in an interlocking relation with an ascending movement of the inertial body along a slope of the support depression. An upper weight is located above a swing center axis. A lower weight is provided so that the center of gravity of an assembly swingably supported about the swing center axis is positioned below the swing center axis.

Abstract: A webbing for restraining a vehicle occupant, having a webbing length increasing device which is folded over and sewn together along a transverse direction of the webbing, and when a load applied between a vehicle occupant and the webbing length increasing device exceeds a sewing strength of the webbing length increasing device, stitching of the webbing length increasing device comes undone, the webbing length increasing device having at least a first sewn-together portion and a second sewn-together portion, the second sewn-together portion being provided at a webbing fold tip end side of the first sewn-together portion and having a sewing strength which is smaller than a sewing strength of the first sewn-together portion. Load applied between the vehicle occupant and the webbing, when a length of the webbing is increased at a time of sudden deceleration of a vehicle, is reduced gradually.