Clutch mechanism for vehicle seat
AssigneeToyota Boshoku Kabushiki Kaisha
InventorTaiyo OTSUKA
Life of this patent
Estimating the term…
Abstract
A coupling arm presses a first or second arm of a swing member, connected to a frame of a seat back, by an occupant's backrest load caused by a rear-end collision of a vehicle to pivotally move the swing member. The swing member has a first arm receiving a first backrest load via the coupling arm and a second arm receiving a second backrest load, which is larger than the first backrest load, via the coupling arm. A distance between the first arm and a rotation center of the swing member is longer than a distance between the second and the rotation center of the swing member.
Claims7
A clutch mechanism for a vehicle seat, comprising:
- a pressure receiving member that is pivotably connected to a frame of a seat back;
- a coupling arm that is pivotably connected to the pressure receiving member, wherein the coupling arm is provided with a weight and receives an occupant's backrest load via the pressure receiving member, and the occupant's backrest load received and inertia force applied to the weight in the event of a rear-end collision of the vehicle cause the coupling arm to move in the event of a rear-end collision of a vehicle;
- and
- a swing member that is pivotably connected to the frame of the seat back and that is pressed by the coupling arm to pivot, wherein
- the swing member has a first arm receiving a first backrest load via the coupling arm and a second arm receiving a second backrest load, which is larger than the first backrest load, via the coupling arm,
- a distance between a point at which the first arm is pressed by the coupling arm and a rotation center of the swing member is longer than a distance between a point at which the second arm is pressed by the coupling arm and the rotation center of the swing member.
Dependencies are inferred from the claim text.