Patent ID: 6930248

Claim:
An electrical connection box, comprising first and second casings lockingly coupled together, the second casing having a wall with a bolt hole; a first bush fixed in the second casing and being substantially aligned with the bolt hole, the first bush having an end surface; a bolt amounted rotatably through the first bush and through the bolt hole in the wall of the second casing for fixing the casings to a fixing member, the bolt having a bolt head with a opposite first and second surfaces, the second surface of the bolt head engaging the end surface of the first bush; and a second bush interlocked with an outer circumferential surface of the first bush and having an inward projection engaging the first surface of the bolt head, whereby the first surface of the bolt head pushes the inward projection of the second bush upon detaching the bolt from the fixing member, whereby the lockingly coupled first and second casings can be simultaneously detached from the fixing member.