Abstract: A chair assembly has a base frame, a pivot frame, a backrest frame, a seat frame and a backrest-adjusting device. The pivot frame is mounted pivotally on the base frame. The backrest frame is mounted securely on the pivot frame. The backrest-adjusting device is mounted between the base frame and the pivot frame and has a torsion spring biasing the pivot frame and the backrest frame to pivot forward. The backrest-adjusting device tightens or loosens the torsion spring to change the resilient force provided to the backrest frame against users' back. Therefore, the chair assembly adapts to differ users well.

Abstract: A chair assembly has a base frame, a backrest frame, a seat frame and a seat-adjusting device. The backrest frame is mounted on the base frame. The seat frame is connected pivotally to the base frame. The seat-adjusting device is mounted between the base frame and the seat frame and may be manipulated to move the seat bar backward or forward relative to the base frame. Therefore, a distance between the seat frame and the backrest frame may be adjusted to adapt for different users.

Abstract: A chair assembly has a supporting frame, a backrest frame, a seat frame and a seat-adjusting device. The backrest frame is mounted on the supporting frame. The seat frame is connected pivotally to the base frame. The seat-adjusting device is mounted between the base frame and the seat frame and may be manipulated to move the seat bar backward or forward relative to the base frame. Therefore, a distance between the seat frame and the backrest frame may be adjusted to adapt for different users.

Abstract: A chair assembly has a base frame, a pivot frame, a backrest frame, a seat frame and a backrest-adjusting device. The pivot frame is mounted pivotally on the base frame. The backrest frame is mounted securely on the pivot frame. The backrest-adjusting device is mounted between the base frame and the pivot frame and has a torsion spring biasing the pivot frame and the backrest frame to pivot forward. The backrest-adjusting device tightens or loosens the torsion spring to change the resilient force provided to the backrest frame against users' back. Therefore, the chair assembly adapts to differ users well.

Abstract: A connector for stretch straps of a chair is mounted on the chair to hold and stretch a stretch strap with an opposite connector mounted on the chair and has a receiving recess formed inside the connector and a connecting slot formed through the top of the connector and communicating with the receiving recess. One end of the stretch strap extends through the connecting slot to be held by a binder in the receiving recesses. A bottom of the stretch strap is propped out by a top edge of the connecting slot so that a top of the stretch strap is protrudent relative to the top of the connector and a sharp edge formed between the top and the front end of the connector. Thus, a user's body is prevented from contacting with the rigid top and the sharp edge of the connector to comfortably sit on the chair.

Abstract: A stretch strap of a chair has multiple stretch ropes and a soft sleeve. The soft sleeve receives the two stretch ropes therein. Each stretch rope has multiple rubber cords and a covering layer binding the rubber cords therein. Since the covering layer is a weave, so there are gaps on the covering layer and a concave is formed between the two adjacent stretch ropes, when the stretch ropes are tied together. However, the woven covering layer is inside of the soft sleeve, the soft sleeve prevents dirt from receiving in the gaps and the concaves. In addition, a chair user directly sits on the soft sleeve not on the woven covering layers and feels comfortable.

Abstract: A connector for stretch straps of a chair is mounted on the chair to hold and stretch a stretch strap with an opposite connector mounted on the chair and has a receiving recess formed inside the connector and a connecting slot formed through the top of the connector and communicating with the receiving recess. One end of the stretch strap extends through the connecting slot to be held by a binder in the receiving recesses. A bottom of the stretch strap is propped out by a top edge of the connecting slot so that a top of the stretch strap is protrudent relative to the top of the connector and a sharp edge formed between the top and the front end of the connector. Thus, a user's body is prevented from contacting with the rigid top and the sharp edge of the connector to comfortably sit on the chair.

Abstract: A massage bed includes a frame with four sides. The frame has multiple seats mounted at the four sides. Multiple elastic straps are mounted by the seats and interleavedly extend between the opposite sides in longitudinal and transversal directions. Multiple massage members are individually mounted on the transversal elastic straps. Multiple clamping members are respectively mounted cross points of the longitudinal and transversal elastic straps. A cover with good elasticity and air permeability is spread over the frame. Whereby, the massage bed has a good air permeability and is easy to maintain.

Abstract: A cover for massaging member on an elastic chair has an elongated body made of soft material. The elongated body has an open side with two edges, two open ends, and a zipper mounted at the open side for fastening the edges of the open side. A chamber is defined in the elongated body and two openings are respectively defined at the open ends when the open side is zipped up. Multiple bulges are protruded from the body. Whereby, massaging members and wires can be concealed and cushioned by the cover and the elastic chair will have an attractive appearance and make a user sitting on the chair feel more comfortable.

Abstract: A massage bed includes a frame with four sides. The frame has multiple seats mounted at the four sides. Multiple elastic straps are mounted by the seats and interleavedly extend between the opposite sides in longitudinal and transversal directions. Multiple massage members are individually mounted on the transversal elastic straps. Multiple clamping members are respectively mounted cross points of the longitudinal and transversal elastic straps. A cover with good elasticity and air permeability is spread over the frame. Whereby, the massage bed has a good air permeability and is easy to maintain.

Abstract: A massaging device for a chair having multiple resilient straps has a massaging housing, a vibration device and a massaging face. The massaging housing has a front case and a rear case, and multiple connecting fins are formed inside the massaging housing. The vibration device is securely mounted between the connecting fins in the massaging housing. The vibration device has a motor with a protruding motor shaft and an offset flywheel securely attached to the protruding shaft. The massaging face has an outer surface with at least one massaging bulb and an inner surface. At least one strap groove with two ribs is formed on the inner surface of the massaging face, and at least one strap is securely mounted in the at least one strap groove. The massaging face securely connects to the outer surface of the front case of the massaging housing.

Abstract: An armchair includes a frame supported on a base. The frame defines a seat area and a seatback area, with a plurality of elastic cords stretched in the areas of the frame. The armchair is further provided with a pair of armrests arranged on sides of the frame, and a pair of devices for connecting the armrests to the frame. Each of the devices has an upper piece attached to the frame beneath the seat area and a lower piece fastened to the upper piece. The lower piece has an outer end attached to one of the armrests, thereby connecting the respective one of the armrests to the frame.

Abstract: A cross member includes two end members each have a body with two passages, and an endless flexible member extending through the passages and connected between the two end members. Each body has a tab extending from the first end thereof so as to be riveted to the two sides of the seat frame and the backrest frame of the chair. A recess is defined in the first end of each body so as to receive the joint of the endless flexible member.

Abstract: A chair includes a seat frame with four legs and a backrest frame. Each of the seat frame and the backrest frame has a plurality of connecting members connected to two sides thereof and a plurality of flexible strips connected between the connecting members. Four bags are respectively mounted to the two sides of the seat frame and the backrest frame and the bags enclose the connecting members on the seat frame and the backrest frame. Each of the bags has foam material filled therein so that the bags are soft.