| 摘要 |
Disclosed is a spacer having at least one protruded part protruding from the circumference thereof. When a spacer is not set onto a predetermined moving-mounting location of a mobile mounting device, the protruding portion moves and rotates the spacer by contacting the mobile mounting device, in order to set the spacer onto the moving-mounting location, while clamping the spacer to the mobile mounting device. |
