摘要:
An acceleration detecting device capable of permitting a weight, a diaphragm and a base to be precisely positioned on a casing of a measuring equipment or the like. The weight, diaphragm and base are integrally formed of a metal material into a single unit. An insulating casing is integrally formed while incorporating the single unit as an insert therein. The insulating casing has a recess defined by a side wall thereof, which is formed with a window for exposing a part of the base therethrough. The recess of the casing is closed with a metal cover member, which is mounted on the casing. The cover member is integrally provided with a contactor which is elastically forced against the base through the window. The base is electrically connected to ground terminals of terminal fitments.
摘要:
The present invention provides a semiconductor acceleration sensor wherein a semiconductor element is prevented from being damaged even when at least part of a weight is disposed in an internal space of a semiconductor sensor element and the mass of a weight is accordingly increased. An inner peripheral surface of a support portion 9 is constituted by four trapezoidal inclined surfaces 13 of a substantially identical shape which are annularly combined so as to define an outer peripheral surface of a frust-pyramidal space. A weight 3 is so constructed as to have an abutting portion including a linear portion 3d which abuts against the inclined surfaces 13 constituting the inner peripheral surface of the support portion 9 when the weight 3 makes a maximum displacement in a direction where a diaphragm portion 11 is located. The abutting portion 3d has a circular outline shape as seen from a side where a weight fixing portion 7 is located. A stopper structure is constituted by the inclined surfaces 13 and the abutting portion 3d of the weight 3, for restricting a displacement range of the weight 3 in the direction where the diaphragm portion 11 is located.
摘要:
The present invention provides a semiconductor acceleration sensor wherein a semiconductor element is prevented from being damaged even when at least part of a weight is disposed in an internal space of a semiconductor sensor element and the mass of a weight is accordingly increased. An inner peripheral surface of a support portion 9 is constituted by four trapezoidal inclined surfaces 13 of a substantially identical shape which are annularly combined so as to define an outer peripheral surface of a frust-pyramidal space. A weight 3 is so constructed as to have an abutting portion including a linear portion 3d which abuts against the inclined surfaces 13 constituting the inner peripheral surface of the support portion 9 when the weight 3 makes a maximum displacement in a direction where a diaphragm portion 11 is located. The abutting portion 3d has a circular outline shape as seen from a side where a weight fixing portion 7 is located. A stopper structure is constituted by the inclined surfaces 13 and the abutting portion 3d of the weight 3, for restricting a displacement range of the weight 3 in the direction where the diaphragm portion 11 is located.
摘要:
A semiconductor sensor of which the thickness may be reduced and a method of manufacturing a sensor body for the semiconductor sensor are provided. A total length L1 of a weight portion 5 and an additional weight portion 3 as measured in an extending direction of a centerline C is determined to be shorter than a length L2 of a support portion 7 as measured in the extending direction of the centerline C. The weight portion 5 and the additional weight portion 3 are received within a space 15 defined, being surrounded by the support portion 7. Then, dimensions and shapes of the weight portion 5 and the additional weight portion 3 are determined to allow the weight portion 5 and the additional weight portion 3 to move within the space 15.
摘要:
A semiconductor sensor of which the thickness may be reduced and a method of manufacturing a sensor body for the semiconductor sensor are provided. A total length L1 of a weight portion 5 and an additional weight portion 3 as measured in an extending direction of a centerline C is determined to be shorter than a length L2 of a support portion 7 as measured in the extending direction of the centerline C. The weight portion 5 and the additional weight portion 3 are received within a space 15 defined, being surrounded by the support portion 7. Then, dimensions and shapes of the weight portion 5 and the additional weight portion 3 are determined to allow the weight portion 5 and the additional weight portion 3 to move within the space 15.
摘要:
A semiconductor sensor of which the thickness may be reduced and a method of manufacturing a sensor body for the semiconductor sensor are provided. A total length L1 of a weight portion 5 and an additional weight portion 3 as measured in an extending direction of a centerline C is determined to be shorter than a length L2 of a support portion 7 as measured in the extending direction of the centerline C. The weight portion 5 and the additional weight portion 3 are received within a space 15 defined, being surrounded by the support portion 7. Then, dimensions and shapes of the weight portion 5 and the additional weight portion 3 are determined to allow the weight portion 5 and the additional weight portion 3 to move within the space 15.