| 摘要 |
Supporting shafts (18) are provided on a cover (12) of a housing (10), and bearings (70) are provided in a lever (60). Each supporting shaft (18) includes retaining pieces (21) around a recess (20) at an inner side, and the retaining pieces (21) are inserted into the bearings (70) and leading-end flanges (23) thereof are resiliently engageable with opening edges of the bearings (70). Each bearing (70) includes a restriction (72) insertable into the recess (20) from a leading end of the supporting shaft (18). The restrictions (72) are displaceable to deformation permitting areas where resilient deformations of the retaining pieces toward the recesses (20) are permitted when the lever (60) is assembled and to deformation preventing areas where the resilient deformations of the retaining pieces (21) toward the recesses (20) are prevented by interference of the restricts (72) with the retaining pieces (21) as the lever (60) is rotated.
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