Abstract: A fastening structure for vehicles includes a mounting member, a mounting target member, a spacer member, a bolt member, and a nut member. The mounting member includes a first member and a second member. The first member includes a first mounting portion and a first insertion hole. The second member includes a second mounting portion and a second insertion hole. The first mounting portion overlaps the second mounting portion. The mounting target member includes a bolt insertion hole. The spacer member is attached to the first mounting portion and is arranged between the first mounting portion and the mounting target member. The nut member is attached to the second mounting portion. The bolt member is inserted through the first insertion hole, the second insertion hole, and the bolt insertion hole, and is screw-engaged with the nut member, thereby fixing the mounting member to the mounting target member.

Abstract: A damper device of a starting device includes a drive member, a driven member, outer springs that transmit torque between the drive member and the driven member, first and second inner springs that are placed inward of the outer springs and that transmit torque between the drive member and the driven member, and a dynamic damper having third springs coupled to a first intermediate member as a rotary element and a turbine runner as a mass body coupled to the third springs. The third springs of the dynamic damper are disposed so as to be located next to the outer springs of the damper device in the circumferential direction.

Abstract: A dynamic damper is coupled to an intermediate member of a damper device. A drive member of the damper device has additional abutment portions coupled to end portions of vibration absorption springs of the dynamic damper before both first and second inter-element stoppers operate. The second inter-element stoppers operate before the first inter-element stoppers operate and at least by the time when the additional coupling portions are coupled to end portions of the vibration absorption springs. Outer springs and the vibration absorption springs act in parallel to transfer torque after the additional coupling portions are coupled to end portions of the vibration absorption springs.

Abstract: An instrument panel reinforcement in a tubular shape according to one aspect comprises a large-diameter portion that supports a steering column, a small-diameter portion that has an outer diameter smaller than an outer diameter of the large-diameter portion and has a thickness smaller than a thickness of the large-diameter portion, and an intermediate portion that is arranged between the large-diameter portion and the small-diameter portion. The intermediate portion is formed integrally with the large-diameter portion and has an outer diameter smaller than the outer diameter of the large-diameter portion.

Abstract: A fastening structure for vehicles includes a mounting member, a mounting target member, a spacer member, a bolt member, and a nut member. The mounting member includes a first member and a second member. The first member includes a first mounting portion and a first insertion hole. The second member includes a second mounting portion and a second insertion hole. The first mounting portion overlaps the second mounting portion. The mounting target member includes a bolt insertion hole. The spacer member is attached to the first mounting portion and is arranged between the first mounting portion and the mounting target member. The nut member is attached to the second mounting portion. The bolt member is inserted through the first insertion hole, the second insertion hole, and the bolt insertion hole, and is screw-engaged with the nut member, thereby fixing the mounting member to the mounting target member.

Abstract: A damper device has a dynamic damper that includes a mass body and vibration absorption springs that couple the mass body and an intermediate member to each other. The vibration absorption springs are arranged side by side with outer springs in the circumferential direction. The mass body has spring abutment portions that abut against end portions of the vibration absorption springs. The intermediate member has first outer spring abutment portions that abut against end portions of the outer springs and second outer spring abutment portions that abut against end portions of the vibration absorption springs on the radially inner side with respect to the spring abutment portions. The first outer spring abutment portions extend toward the radially outer side with respect to the second outer spring abutment portions.

Abstract: An instrument panel reinforcement in a tubular shape according to one aspect comprises a large-diameter portion that supports a steering column, a small-diameter portion that has an outer diameter smaller than an outer diameter of the large-diameter portion and has a thickness smaller than a thickness of the large-diameter portion, and an intermediate portion that is arranged between the large-diameter portion and the small-diameter portion. The intermediate portion is formed integrally with the large-diameter portion and has an outer diameter smaller than the outer diameter of the large-diameter portion.

Abstract: A damper device has a dynamic damper that includes a mass body and vibration absorption springs that couple the mass body and an intermediate member to each other. The vibration absorption springs are arranged side by side with outer springs in the circumferential direction. The mass body has spring abutment portions that abut against end portions of the vibration absorption springs. The intermediate member has first outer spring abutment portions that abut against end portions of the outer springs and second outer spring abutment portions that abut against end portions of the vibration absorption springs on the radially inner side with respect to the spring abutment portions. The first outer spring abutment portions extend toward the radially outer side with respect to the second outer spring abutment portions.

Abstract: A dynamic damper is coupled to an intermediate member of a damper device. A drive member of the damper device has additional abutment portions coupled to end portions of vibration absorption springs of the dynamic damper before both first and second inter-element stoppers operate. The second inter-element stoppers operate before the first inter-element stoppers operate and at least by the time when the additional coupling portions are coupled to end portions of the vibration absorption springs. Outer springs and the vibration absorption springs act in parallel to transfer torque after the additional coupling portions are coupled to end portions of the vibration absorption springs.

Abstract: A damper device of a starting device includes a drive member, a driven member, outer springs that transmit torque between the drive member and the driven member, first and second inner springs that are placed inward of the outer springs and that transmit torque between the drive member and the driven member, and a dynamic damper having third springs coupled to a first intermediate member as a rotary element and a turbine runner as a mass body coupled to the third springs. The third springs of the dynamic damper are disposed so as to be located next to the outer springs of the damper device in the circumferential direction.