Abstract: An assistive device structure for positioning and pressure relief is provided, including a first elastic layer and a second elastic layer, which are attached by using a high-frequency encapsulation process, sealing, bagging, thermoforming, or an integrally molding process. Each of the first and second elastic layers has a bottom surface and an arc surface disposed opposite to each other. The arc surface includes two protrusions and a recess formed there in between. The two protrusions have different heights. A hollow area is disposed in the recess of the first and second elastic layers. Based on such structure, the bottom surfaces of the first and second elastic layers are attached to form the proposed assistive device structure for a user to lean against and providing multiple positioning effects and pressure relief. More than four axial directions of supporting forces are generated to effectively enhance muscle relaxation and stress relief.

Abstract: Provided is an integral single-frame two-way headrest with a U-shaped single rod, comprising a U-shaped rod, an integral frame and a cover, the integral frame being externally covered with the cove, and the integral frame is hollow inside. An opening is arranged at a lower end of the integral frame, and an upper portion of the U-shaped rod is inserted into the inner frame from the opening, a plurality of positioning grooves is arranged on the right side of two downwardly extending ends of the U-shaped rod. A rod guide sleeve sleeved on both ends of the U-shaped rod is mounted at both ends of the opening, and the outer side of the integral frame is mounted with an unlocking steel wire corresponding to the positioning groove at both ends of the U-shaped rod, an unlocking lever connected with the unlocking steel wire and laterally movable is mounted in a hollow portion of the integral frame.

Abstract: Provided is an integral single-frame two-way headrest with a U-shaped single rod, comprising a U-shaped rod, an integral frame and a cover, the integral frame being externally covered with the cove, and the integral frame is hollow inside. An opening is arranged at a lower end of the integral frame, and an upper portion of the U-shaped rod is inserted into the inner frame from the opening, a plurality of positioning grooves is arranged on the right side of two downwardly extending ends of the U-shaped rod. A rod guide sleeve sleeved on both ends of the U-shaped rod is mounted at both ends of the opening, and the outer side of the integral frame is mounted with an unlocking steel wire corresponding to the positioning groove at both ends of the U-shaped rod, an unlocking lever connected with the unlocking steel wire and laterally movable is mounted in a hollow portion of the integral frame.