Abstract: In the assembly process of a cabinet, the work process involving the insertion of screws and costs of assemblies such as screws can be reduced. A front cabinet (1) has on its upper surface formed an engaged portion (4) and a rear cabinet (2) has on its upper surface formed an engagement portion (6) at a position corresponding to the engaged portion of the front cabinet (1). In the assembly process of the cabinet, the upper surface of the cabinet is engaged by the engagement portion (6) and the engaged portion (4).

Abstract: A deceleration sensor for detecting a threshold level of deceleration indicative of vehicle crash, comprising a sensor mass, a spring-loaded firing pin received in a guide bore, a trigger lever for engaging the firing pin in a dormant state until the trigger lever is disengaged from the sensor mass as a result of the occurrence of a deceleration in excess of the threshold level and the resulting inertia motion of the sensor mass, and a safety catch which may include a rotary shaft extending perpendicular to the plane of the inertia motion of the sensor mass and a part of a front end portion of the guide bore, the rotary shaft being provided with a first notch and a second notch which, respectively, permits and prohibits the propulsion of the firing pin through the guide bore by aligning with the guide bore.