Pressure sensor for a vehicle
First Claim
1. A pressure sensor comprising:
- a housing which has an opening portion for communicating an interior of the housing with an exterior thereof;
a pressure detecting unit which has a detection surface for detecting a pressure and is arranged in the housing; and
a seal member, whereina perimeter of the detection surface of the pressure detecting unit has a protrusion portion which protrudes toward a perimeter of the opening portion of the housing;
the perimeter of the opening portion of the housing has a groove, into which a tip of the protrusion portion is inserted; and
the seal member is arranged between the groove and the tip of the protrusion portion to seal therebetween.
4 Assignments
0 Petitions
Accused Products
Abstract
A pressure sensor is provided with a housing which has an opening portion for communicating an interior of the housing with an exterior, and a pressure detecting unit which has a detection surface for detecting a pressure applied thereto through the opening and is arranged in the housing. One of a perimeter of the detection surface and that of the opening portion has a protrusion portion which protrudes toward other of the perimeters. The other of the perimeters has a groove, into which a tip of the protrusion portion is inserted. A seal member is arranged between the groove and the protrusion portion, to seal therebetween and buffer stress caused by relative displacement between the housing and the pressure detecting unit.
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Citations
14 Claims
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1. A pressure sensor comprising:
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a housing which has an opening portion for communicating an interior of the housing with an exterior thereof; a pressure detecting unit which has a detection surface for detecting a pressure and is arranged in the housing; and a seal member, wherein a perimeter of the detection surface of the pressure detecting unit has a protrusion portion which protrudes toward a perimeter of the opening portion of the housing; the perimeter of the opening portion of the housing has a groove, into which a tip of the protrusion portion is inserted; and the seal member is arranged between the groove and the tip of the protrusion portion to seal therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A pressure sensor comprising:
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a housing which has an opening portion for communication an interior of the housing with an exterior thereof; a pressure detecting unit which has a detection surface for detecting a pressure and is arranged in the housing; and a seal member made of a buffer material to buffer stress caused by a relative displacement between the housing and the pressure detecting unit, wherein one of a perimeter of the detection surface of the pressure detecting unit and that of the opening portion of the housing has a protrusion portion which protrudes toward other of the perimeters; the other of the perimeters has a groove, into which a tip of the protrusion portion is inserted; and the seal member is arranged between the groove and the tip of the protrusion portion to seal therebetween and is constructed by a hardening of a raw material solution in such a manner that the tip of the protrusion portion is plunged in the raw material solution, which is reserved in the groove, wherein one of the pressure detecting unit and the housing where the groove is arranged has a reservoir for accommodating the raw material solution of the seal member; and when a liquid level of the raw material solution in the groove is beyond a predetermined position, the raw material solution overflows from the groove into the reservoir. - View Dependent Claims (13)
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14. A pressure sensor comprising:
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a housing which has an opening portion for communicating an interior of the housing with an exterior thereof; a pressure detecting unit which has a detection surface for detecting a pressure and is arranged in the housing; and a seal member, wherein one of a perimeter of the detection surface of the pressure detecting unit and that of the opening portion of the housing has a protrusion portion which protrudes toward other of the perimeters; the other of the perimeters has a groove, into which a tip of the protrusion portion is inserted, wherein the tip of the protrusion portion and a lower portion of the groove define a passageway; and the seal member is arranged between the groove and the tip of the protrusion portion to seal therebetween.
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Specification