| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent deformation of a lever. SOLUTION: Proximal ends 31A of both arm portions 31 attempts to spread during pivoted operation of a lever 30 to be controlled at a control wall 40. A portion easiest to spread is a portion corresponding to on a line X perpendicularly drawn from a shaft, 15 to a fitting surface 19. Since an external peripheral edge of a forming region of a cam groove 35 successively passes through the line X, the exterior peripheral edge becomes the portion easiest to spread. Since the external peripheral edge of the forming region of the cam groove 35 is in a form of an arc 38 having a certain radius from a pivoted center, the portion easy to deform comes to be always received by the external peripheral edge in the vicinity of a position forming a through-groove 18 in the control wall 40. Since this portion is fixed to a side surface of a male housing 10 by connecting walls 43A, 43B and becomes a joint portion having high stiffness, the portion easiest to spread is always received by a high-stiffness portion of the control wall 40 to effectively prevent spread deformation.
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