| 摘要 |
<p>A structure where an armrest is detachably coupled to a seatback includes an axial pin, a moving pin, a supporting bracket, and a slope. The axial pin and the moving pin projects from a side face of one end of the armrest. The moving pin has a head at its distal end. The supporting bracket is fixed on a side portion of the seatback, and it has an axial hole for receiving the axial pin and a guide groove for receiving the moving pin. The axial pin is inserted into the axial hole to be rotatably supported by the supporting bracket. The moving pin is inserted into the guide groove to be waved within the guide groove according to rotation of the axial pin. The slope is disposed on an edge of the guide groove near the using point. As the arrest reaches the using position, the head rides on the slope according to movement of the moving pin, so that the moving pin approaches to the seatback. Thereby, the slope causes the armrest at the using position and the side portion of the seatback to contact with each other and the armrest is supported on the side portion of the seatback. <IMAGE></p> |
