Pressure sensor and method for manufacturing the same
First Claim
1. A pressure sensor comprising:
- a housing having a pressure introduction port; and
a connector case integrated with the housing,wherein the pressure introduction port has a first opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the connector case,wherein the connector case includes;
a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction;
a sensor chip that has a gauge for detecting pressure disposed on one surface of the chip, and is disposed in the concavity so that the one surface of the chip is parallel to the introduction direction;
a terminal having one end, which is inserted and molded in the connector case so that the one end is sealed by the connector case; and
a bonding wire that electrically connects the sensor chip and the one end of the terminal, andwherein the connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire.
1 Assignment
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Accused Products
Abstract
A pressure sensor includes: a housing having a pressure introduction port; and a connector case integrated with the housing. The connector case includes: a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction; a sensor chip having a pressure gauge on one surface of the chip in the concavity; a terminal having one end inserted and molded in the connector case; and a bonding wire that electrically connects the sensor chip and the one end of the terminal. The connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire.
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Citations
42 Claims
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1. A pressure sensor comprising:
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a housing having a pressure introduction port; and a connector case integrated with the housing, wherein the pressure introduction port has a first opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the connector case, wherein the connector case includes; a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction; a sensor chip that has a gauge for detecting pressure disposed on one surface of the chip, and is disposed in the concavity so that the one surface of the chip is parallel to the introduction direction; a terminal having one end, which is inserted and molded in the connector case so that the one end is sealed by the connector case; and a bonding wire that electrically connects the sensor chip and the one end of the terminal, and wherein the connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pressure sensor comprising:
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a housing having a pressure introduction port; and a connector case integrated with the housing, wherein the pressure introduction port has a first opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the connector case, wherein the connector case includes; a sensor chip that has a gauge for detecting pressure disposed on one surface of the sensor chip, and is disposed in parallel to the introduction direction, the one surface being exposed from one end of the connector case; a terminal having one end, which is inserted and molded in the connector case so that the one end is sealed by the connector case; and a bonding wire that electrically connects the sensor chip and the one end of the terminal, and wherein the connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire. - View Dependent Claims (8)
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9. A pressure sensor comprising:
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a housing having a pressure introduction port; and a connector case integrated with the housing, wherein the pressure introduction port has a first opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the connector case, and wherein the connector case includes; a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction; a sensor chip that has a gauge for detecting pressure disposed on one surface of the chip, and is disposed in the concavity so that the one surface of the chip is parallel to the introduction direction; and a terminal having one end, which is inserted and molded in the connector case and electrically connected to the sensor chip directly without using a bonding wire. - View Dependent Claims (10)
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11. A pressure sensor comprising:
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a housing having a pressure introduction port; and a connector case integrated with the housing, wherein the pressure introduction port has a first opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the connector case, wherein the connector case includes; a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case; a first chip that has a gauge for detecting pressure disposed on one surface of the chip, and is disposed on one surface of the protruding portion, which is parallel to the introduction direction; a second chip having a circuit for processing a signal output from the first chip, and inserted and molded in the connector case in such a manner that the second chip is parallel to the introduction direction; an internal connection terminal having a bar shape and having one end and the other end, the one end electrically connected to the first chip, and the other end connected to the second chip via a first bonding wire; and an external connection terminal having a bar shape and having one end connected to the second chip via a second bonding wire, and wherein the connector case seals the internal connection terminal, a connection portion between the internal connection terminal and the first bonding wire, the first bonding wire, a connection portion between the first boding wire and the second chip, and the second chip, a connection portion between the second chip and the second bonding wire, the second bonding wire, a connection portion between the second bonding wire and the external connection terminal.
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12. A pressure sensor comprising:
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a housing having a pressure introduction port; and a case having one end integrated in the housing, wherein the pressure introduction port has an opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the one end of the case, wherein the case includes; a groove disposed on the one end of the case, and hollowed in the introduction direction; a terminal inserted and molded in the case, and has one end exposed in the groove; and a sensor chip having one surface parallel to the introduction direction, and including a gage for detecting pressure, wherein the gauge is disposed on the one surface of the sensor chip around one end of the sensor chip, wherein the one end of the sensor chip is disposed on an opening side, wherein the sensor chip further includes the other end, which is opposite to the one end, and disposed on a groove side, and wherein the other end of the sensor chip is electrically coupled with the one end of the terminal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for manufacturing a pressure sensor, wherein the pressure sensor includes:
- a housing having a pressure introduction port; and
a case having one end integrated in the housing, wherein the pressure introduction port has an opening for introducing a pressure medium into the pressure introducing port along with an introduction direction so that the pressure medium reaches the one end of the case, wherein the case includes;
a groove disposed on the one end of the case, and hollowed in the introduction direction;
a terminal inserted and molded in the case, and has one end exposed in the groove; and
a sensor chip having one surface parallel to the introduction direction, and including a gage for detecting pressure, wherein the gauge is disposed on the one surface of the sensor chip around one end of the sensor chip, wherein the one end of the sensor chip is disposed on an opening side, wherein the sensor chip further includes the other end, which is opposite to the one end, and disposed on a groove side, and wherein the other end of the sensor chip is electrically coupled with the one end of the terminal, the method comprising;preparing the case in which the terminal is inserted and molded; inserting the sensor chip into the groove by holding the other surface of the sensor chip opposite to the one surface of the sensor chip with a jig and by displacing the sensor chip relatively to the case; and electrically coupling the sensor chip to the terminal after inserting the sensor chip into the groove. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
- a housing having a pressure introduction port; and
Specification