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US 7,740,311 B2Granted
Car seat
AssigneeDaihatsu Motor Co., Ltd.
InventorsYoshifumi Taoka, Tetsurou Ushijima
Life of this patent
Estimating the term…
Abstract
In a front part inside a seat cushion are arranged a catching member extending in a widthwise direction of the seat cushion and movable up and down, and inertial force transmission means for moving the catching member upward by the inertial force that acts on an inertial mass at the time of rapid deceleration. When a passenger sits on the seat cushion, the catching member moves down so as not to deteriorate the seat comfort, and at the time of rapid deceleration, the catching member moves up and stops the passenger's hips from moving forward. Thus it is reliably prevented that the passenger moves forward, without deteriorating the seat comfort, and the design is simple, lightweight, and low-cost.
Claims11
A car seat, comprising
- a catching part being disposed in a front part inside a seat cushion, said catching part extending in a widthwise direction of the seat cushion and mounted so as to be pivotably movable up and down about a pivot axis extending codirectionally with said widthwise direction and from which said catching part is radially spaced apart;
- and
- an inertial force application mechanism including an inertial mass part, said inertial mass part being mounted for pivotable movement about said pivot axis from which said inertial mass part is radially spaced apart, said inertial mass part being circumferentially spaced apart a fixed distance from said catching part about said pivot axis, said inertial mass part being activated by an inertial force acting directly on said inertial mass part at a time of rapid deceleration operable to pivot the catching part upward.
A car seat, comprising:
- a catching part being disposed in a front part inside a seat cushion, said catching part extending in a widthwise direction of the seat cushion and arranged so as to be movable up and down;
- inertial force application means for moving the catching part upward when activated by an inertial force at a time of rapid deceleration, said inertial force application means including an inertial mass part disposed forward of the catching part, said inertial force application means being activated by an inertial force acting directly on said catching part and said inertial mass part;
- and
- locking means for stopping downward movement of the catching part that is moved upward by the inertial force during said rapid deceleration, the locking means including a locking member that is always kept in biased surface contact with a support member, the support member coupling and supporting the catching part and the inertial mass part with each other and further including an engagement portion formed to the support member to be engaged with the locking member when the catching part moves more than a predetermined distance when said catching part is moved upward upon activation of said inertial force application means.
1 more element
The car seat, comprising:
- a catching part being disposed in a front part inside a seat cushion, said catching part extending in a widthwise direction of the seat cushion and arranged so as to be movable up and down;
- an inertial force application mechanism, including an inertial mass part disposed forward of the catching part, that is activated by an inertial force acting directly on said catching part and said inertial mass part at a time of rapid deceleration operable to move the catching part upward;
- and
- a locking mechanism configured to be operable for stopping downward movement of the catching part that is moved upward by the inertial force during the rapid deceleration, wherein the locking mechanism includes:
- a locking member that is maintained in biased contact with a support member, the support member coupling and supporting the catching part and the inertial mass part with each other;
- and
- an engagement portion formed to the support member to be engaged with the locking member when the catching part moves more than a predetermined distance.
4 more elements
The car seat, comprising:
- a catching part being disposed in a front part inside a seat cushion, said catching part extending in a widthwise direction of the seat cushion and arranged so as to be movable up and down;
- an inertial force application mechanism, including an inertial mass part disposed forward of the catching part, that is activated by an inertial force acting directly on said catching part and said inertial mass part at a time of rapid deceleration operable to move the catching part upward;
- and
- a locking mechanism configured to be operable for stopping downward movement of the catching part that is moved upward by the inertial force during the rapid deceleration, wherein the locking mechanism includes:
- a support member coupling the catching part and the inertial mass part with each other, said support including gear teeth carried thereon;
- and
- a pendular member having other gear teeth for engaging said gear teeth of said support member when brought out of a normally disengaged state therewith by the rapid deceleration against a bias which operates to maintain the normally disengaged state in the absence of said rapid deceleration, engagement of said gear teeth and said other gear teeth preventing said downward movement of the catching part.
4 more elements
Dependencies are inferred from the claim text.