Abstract: A vehicle frame's coupler structure that connects separable frames for easy assembly and disassembly, at a low cost. Further, the couple structure can provide a vehicle that is easy to operate, without affecting the user when in use. The vehicle frame's coupler structure includes combining a Front-side Coupler Inner Face (8) with Rear-side Coupler Inner Face (9), and after making sure all components of (8) and (9) are in place (no protruding edges, etc.), and using Bolt (15) to fasten Part (6) with Part (7). The end result is the coupler system of the vehicle.

Abstract: A vehicle frame's coupler structure that connects separable frames for easy assembly and disassembly, at a low cost. Further, the couple structure can provide a vehicle that is easy to operate, without affecting the user when in use. The vehicle frame's coupler structure includes combining a Front-side Coupler Inner Face (8) with Rear-side Coupler Inner Face (9), and after making sure all components of (8) and (9) are in place (no protruding edges, etc.), and using Bolt (15) to fasten Part (6) with Part (7). The end result is the coupler system of the vehicle.

Abstract: A mattress suitable for medical application in hospitals etc. includes a cushion body having air permeability, an air discharger provided below the cushion body for discharging air into the cushion body, and a heat source provided below the cushion body for performing far infrared radiation into the cushion body. Both the air discharger and the heat source have flexibility.

Abstract: A mattress suitable for medical application in hospitals etc. includes a cushion body having air permeability, an air discharger provided below the cushion body for discharging air into the cushion body, and a heat source provided below the cushion body for performing far infrared radiation into the cushion body.