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 first arm receives a first backrest load via the coupling arm and the second arm receives a second backrest load, which is larger than the first backrest load, via the coupling arm. The first and second arms are set so that a maximum pivot amount of the swing member when the first arm is pressed to pivot is equal to a maximum pivot amount of the swing member when the second arm is pressed to pivot.
Claims6
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,
- the first and second arms are set so that a maximum pivot amount of the swing member when the first arm is pressed to pivot is equal to a maximum pivot amount of the swing member when the second arm is pressed to pivot.
Dependencies are inferred from the claim text.