| 摘要 |
PURPOSE:To ensure mounting, by forming an engaging piece on a mounting spring, forming a cut up pawl for preventing pull out, which is engaged with an engaging hole in a supporting part that is protruded from a case, and making the width of the mounting spring larger than the width of opening part at the upper surface of the hole of the supporting part. CONSTITUTION:One end part of a mounting spring 4 is made to be a U shape. An engaging piece 32 is formed at the end part thereof. A cut up pawl 33 is provided at the center of the piece. Ellipse dowells 34 are provided on both sides of the pawl. In a supporting part 5, which is formed as a unitary body on the top part of the back surface of a case 2, a hole 36 and a square engaging hole 31, which have openings only at the upper surface, are provided. By compressing the piece 32 of the spring 4 into the hole 36, the pawl 33 is inserted into the hole 31 so as to prevent pull out. The spring 4 is fixed to the back surface of the case 2 by the dowells 34 without blacklash. The width of the spring 4 is made larger than the width of the supporting part 5, and the intrusion of rain into the hole 36 can be prevented. |
