초록 ▼

To facilitate assembly and provide for high-level output from a deceleration sensor which provides, inherently, only very low level output, an evaluation circuit, such as an amplifier structure, is connected immediately adjacent the deceleration sensor on a common metal plate, interconnected thereby

To facilitate assembly and provide for high-level output from a deceleration sensor which provides, inherently, only very low level output, an evaluation circuit, such as an amplifier structure, is connected immediately adjacent the deceleration sensor on a common metal plate, interconnected thereby by bonding wires, the common plate having connecting pins (18) passing therethrough for connection to a standard plug-and-socket connector; the evaluation circuit and the deceleration sensor are enclosed within a common sealed housing, so that both the deceleration sensor (12, 12′) as well as the evaluation circuit (16, 17) are sealed against ambient influences, preferably retained within a high-viscosity fluid, such as insulating oil. All elements can be located on one side of the housing, in which a standard T5 transistor housing is suitable; or the deceleration sensor may be located on the other side of the metal plate (10) from the evaluation circuit, in which case a plastic housing can be used, only the deceleration sensor being secured to the metal plate by a metal housing cap, sealed to the metal plate.

대표청구항 ▼

In a vehicular passenger restraint system a trigger system comprising a deceleration sensing means including a base structure (11, 30) and a deceleration sensing element (12, 12′) secured to the base structure and an evaluation circuit structure (16, 17) including a support carrier (16) and an integ

In a vehicular passenger restraint system a trigger system comprising a deceleration sensing means including a base structure (11, 30) and a deceleration sensing element (12, 12′) secured to the base structure and an evaluation circuit structure (16, 17) including a support carrier (16) and an integrated circuit (17) on the support carrier; and housing means retaining the deceleraton sensing means and the evaluation circuit structure, including a metal plate (10) forming a single support plate, and a hat-shaped or pot-shaped housing cap (20), the metal plate forming a closure plate for the housing cap and defining a single sealed chamber between the housing cap and the metal plate; wherein the base structure (11, 30) of the deceleration sensing means is secured to the single metal support plate (10) at a first side of the metal plate; a bonding plate (14) is provided electrically connected with a terminal of the deceleration sensing means and providing an electrical terminal connection therefor; and wherein the support carrier (16) with the integrated circuit (17) thereon lies directly against said first side of the metal support plate and is secured thereto; wherein the single metal support plate and the housing cap are secured and selaed together to form a sealed air-tight structure defining said chamber therein, within which deceleration sensing means and the evaluation circuit are located ; and a high viscosity damping material is provided retained in the chamber.