Chair having angle and tension adjusting functions
AssigneeSheng Jia Sheng Co., Ltd.
InventorChih-Yang Huang
Life of this patent
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Abstract
A chair includes a chair body, a connecting member, a back portion, and a restoring device. The chair body includes a base having a receiving chamber. The restoring device includes a threaded adjusting sleeve rotatably mounted in the receiving chamber, a threaded rod screwed into the adjusting sleeve, a pull cord having a first end mounted on the connecting member and a second end mounted on the threaded rod, and an elastic member biased between the base and the adjusting sleeve. Thus, when the back portion is pressed, the connecting member is driven to pivot about the chair body so that the back portion is moved to adjust its inclined angle. In addition, the elastic member provides a damping force to damp a further movement of the back portion to limit the inclined angle of the back portion.
Claims18
A chair, comprising:
- a chair body;
- at least one connecting member pivotally connected with the chair body;
- at least one back portion connected with the connecting member to press and pivot the connecting member outward relative to the chair body;
- and
- at least one restoring device mounted between the connecting member and the chair body to pull the connecting member toward the chair body;
- wherein the chair body includes a base;
- the base of the chair body is provided with at least one receiving chamber to receive the restoring device;
- the restoring device includes:
- a threaded adjusting sleeve rotatably mounted in the receiving chamber of the base;
- a threaded rod screwed into the adjusting sleeve;
- a pull cord having a first end mounted on the connecting member to move in concert with the connecting member and a second end mounted on the threaded rod to pull the threaded rod and the adjusting sleeve toward the connecting member;
- and
- an elastic member mounted on the threaded rod and biased between the base of the chair body and the adjusting sleeve to push the threaded rod and the adjusting sleeve outward relative to the connecting member.
Dependencies are inferred from the claim text.