Abstract: A seat has a supporting frame being rigid, two seat cushions disposed above the supporting frame, and two supporting members. The supporting frame has a main body and four side bodies fixedly mounted on two front ends and two rear ends of the main body. The supporting members are mounted on bottom surfaces of the seat cushions and are connected to the supporting frame. Each one of the supporting members has multiple supporting elements respectively located at a front half section and a rear half section of a corresponding one of the seat cushions. Each one of the supporting elements has a guiding rod mounted on the supporting frame and a main spring disposed around the guiding rod. The seat provides good support by the supporting frame and the supporting members and provides a cushioning performance by the main spring.

Abstract: A seat has a base, two seat cushions disposed above the base, and two supporting members mounted on the seat cushions and connected to the base. Each one of the supporting members has multiple supporting elements. Each one of the supporting elements has a guiding rod and a spring. The guiding rod is mounted on the base and is screwed into a corresponding one of the seat cushions. The spring is disposed around the guiding rod. Two ends of the spring abut against the base and the corresponding one of the two seat cushions. In use, the spring can generate different degrees of compression and provide different degrees of supporting force. Deviation of the spring is limited by the guiding rod to avoid excess of the deviation and ensure sufficient support. The seat has both the support and the cushioning performance to improve sitting comfort.

Abstract: A resilient supporting structure of chairs which is used as a cushion or a back pad on a chair has multiple resilient components and multiple flexible supporting components. The resilient components and the flexible supporting components are woven and interlaced at right angles to form a bearing body. The resilient components are resilient elements which are extendable and compressible. The resilient components offer a resilient support. The flexible supporting components are flexible elements which are non-extendable and non-compressible. The flexible supporting components are woven and interlaced with the resilient components at right angles and generate appropriate and dispersed binding force between the resilient components.

Abstract: A resilient supporting structure of chairs which is used as a cushion or a back pad on a chair has multiple resilient components and multiple flexible supporting components. The resilient components and the flexible supporting components are woven and interlaced at right angles to form a bearing body. The resilient components are resilient elements which are extendable and compressible. The resilient components offer a resilient support. The flexible supporting components are flexible elements which are non-extendable and non-compressible. The flexible supporting components are woven and interlaced with the resilient components at right angles and generate appropriate and dispersed binding force between the resilient components.

Abstract: A positioning device for a supporting cloth has two first connecting rods and two second connecting rods. The two first connecting rods are respectively disposed on a frame. Each one of the two first connecting rods has two supporting portions formed on two ends of the first connecting rod. The second connecting rods are respectively disposed on the frame and are both adjustably connected to the two first connecting rods to form a ring-like member. A distance between the two second connecting rods is adjustable. Each one of the second connecting rods has two protruding portions respectively formed on the two ends of the connecting rod. The two protruding portions are each inserted into a respective supporting portion. The positioning device is applied to be disposed on the frame for fixing a supporting cloth easily and increasing an elastic support effect of the supporting cloth.