US 2022/0234482 A1Published application

Link mechanism, vehicle upper storage-rack structure and seat suspension mechanism

AssigneeDelta Kogyo Co., Ltd.

InventorsEtsunori FUJITA, Masaharu MASHINO, Soichi MAKITA, Ryuji KUWANO, Eiji SUGIMOTO, Yumi OGURA, Atsushi NISHIDA

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Abstract

The operation in a closing direction and the operation in an opening direction of a storage rack are performed efficiently with small force. Fixed frames and a storage rack are connected by link mechanisms, and the link mechanism includes fixed-side links linked to the fixed frame and movable-side links linked to the storage rack. When a position of one ends of the movable-side links is located closer to one ends of the fixed-side links than a balanced point, the elastic member biases the storage rack in an open-position direction. In the open position, since the elastic member biases the storage rack in the opening direction, an open state is maintained as long as the position of the one ends of the movable-side links does not return to the change point position. Accordingly, the open position can be held by a simple structure without using electric power.

Claims8

Dependent claims

A link mechanism being a pantograph type, the link mechanism comprising:

two fixed-side links having fixed-member pivotal support portions pivotally supported by a fixed member;
and two movable-side links having movable-member pivotal support portions pivotally supported by a movable member, fixed-side connection portions of the fixed-side links and movable-side connection portions of the movable-side links being turnably connected with one another, and the movable member being supported to be displaceable relative to the fixed member,
an elastic member which imparts elastic force to bias the movable-side links in a turning direction,
the movable-member pivotal support portions being displaceable to move back and forth across a region on one side close to the fixed-member pivotal support portions and a region on the other side opposite thereto while putting a change point of the movable-side links therebetween, and
the movable-side links being biased in a direction in which the movable-member pivotal support portions approach the fixed-member pivotal support portions when the movable-member pivotal support portions are located in the region on one side, and the movable-side links being biased in a direction in which the movable-member pivotal support portions separate from the fixed-member pivotal support portions when the movable-member pivotal support portions are located in the region on the other side, by the elastic member.

2 more elements

Dependencies are inferred from the claim text.