| 摘要 |
PURPOSE:To make the additional mounting work of a wheel stop easy by installing the wheel stop through the use of a screw for fixing to a case the opening face end of a track, which guides an electric machine from opening toward interior in said case with the opening outer peripheral face. CONSTITUTION:A circuit-breaker 3 is supported in the upper part of a switchboard case 1 opening in the front and provided with a middle partition wall 2 in the direction of depth. A support 4 with L-shaped side face is held in a case 1 by a screw 5. On the front end side of the support 4, there is equipped a wheel stop 12 composed of an L-shaped support piece 9 with transversely directed side cross section secured to the case 1 together with the support 4 by the screw 5 and a contact piece 11 with an inverted L-shaped side cross section fixed by a screw 10 to the front end of the support piece 9. The horizontal part of the support 4 forms a track 7 for guiding the wheel 6 of the bottom face of the circuit-breaker 3 going from the opening face of the case 1 toward the interior. The vertical part on the interior side of the support 4 forms a wheel stop in the inner part. Thus, the circuit-breaker 3 is inserted and removed safely and the additional mounting work of a wheel stop on the opening side is performed easily. |
