Housing and master cylinder device

摘要

A lid member has an external shape inscribing a quadrilateral formed by two sets of two facing sides, and has: a pair of first cut-out sections configured by cutting out, in the same size, a pair of diagonal corners from among the two sets of diagonal corners of the quadrilateral; and a pair of second cut-out sections configured by cutting out the other diagonal corners in the same size. The outer shape of the lid member is formed in a point-symmetric shape relative to the center of an opening in a peripheral wall section. The first cut-out sections have a larger surface area than the second cut-out sections, and one out of the pair of first cut-out sections is configured so as to be arranged in the vehicle progression direction and at the bottom in the vertical direction, when a base body is mounted to a vehicle.

主权项

1. A housing assembled on one surface of a base configured to be mounted on a vehicle, said housing comprising:
a circumferential wall member enclosing parts provided to the base; and a lid member mounted on the circumferential wall member and covering an opening formed in the wall member on a side of the one surface of the base, wherein the lid member comprises a contour inscribed on a quadrilateral formed with two pairs of two sides facing each other, and further comprises a pair of first cut-out parts formed by cutting out one of the pair of diagonal corners of the quadrilateral, the first cut-out parts having the same size as one another, and a pair of second cut-out parts formed by cutting out the other of the pair of diagonal corners, the second cut-out parts having the same size as one another, wherein the contour of the lid member is formed in a point-symmetrical shape with respect to a center of the opening, wherein an area of the first cut-out part is greater than an area of the second cut-out part, and wherein a first one of the first cut-out parts is arranged at a part which is configured to be situated in the front direction of the vehicle and a second one of the first cut-out parts is configured to be situated at a position low in the vertical direction when the base is mounted on the vehicle.