Chair Having Angle and Tension Adjusting Functions

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.