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Pressure sensor and method for producing same

A pressure sensor and sensor element technology, applied in the direction of measuring fluid pressure, measuring fluid pressure through electromagnetic elements, instruments, etc., can solve the problems of pressure sensor failure, damage, and expensive manufacturing.

Inactive Publication Date: 2003-10-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of this pressure sensor is that it is rather expensive to manufacture, since the electrical connection, the carrier plate and the sensor element have to be accommodated separately in the housing
On the other hand, it has been found that it is also particularly disadvantageous to use connecting wires directly for the contact parts of the pressure sensor, because such connecting wires are very sensitive, so there is a risk of damage and thus a failure of the pressure sensor, especially It is more prominent under the action of pressure medium

Method used

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  • Pressure sensor and method for producing same
  • Pressure sensor and method for producing same
  • Pressure sensor and method for producing same

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Embodiment Construction

[0020] A pressure sensor, as described in FIGS. 1 and 2 , 3 , is generally designated 10 and includes a housing 20 , which is formed, for example, from two housing halves 21 , 22 .

[0021] The housing 20 has a substantially cylindrical configuration and is preferably made of plastic. A sensor element 30 is accommodated in the housing 20 . The sensor element 30 is connected to the outside world via a tube connection 31 . Via the tube connection 31 , a pressurized medium acts on the sensor element 30 , which is, for example, a silicon chip provided with a membrane. The sensor element 30 is mounted on a carrier plate 40 and is connected to contact surfaces on the (not depicted) carrier plate 40 , for example via connecting lines 32 . The sensor element 30 passes through a diaphragm 35 (see FIG. 3 ) or a perforated protective cover 36 (see figure 2 ) is protected against the pressurized medium, especially against dust, or pollutants or the like that sometimes exists there.

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PUM

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Abstract

The invention relates to the device and manufacture of an improved pressure sensor, which comprising: a housing, a carrier plate disposed on an assembly surface of the housing, a sensor element disposed in the housing, and at least one electric connection element connected to at least one contact surface of the carrier plate. The invention also provides a production method such that the pressure sensor is simple to produce and is reliable and operational for a long period of time. To that end, at least one connection element is disposed flush with the assembly surface and is directly connected to the at least one contact surface, and a capillary adhesive layer is disposed between the carrier plate and the assembly surface.

Description

technical field [0001] The invention relates to a pressure sensor comprising: a housing, a support plate arranged on an assembly surface of the housing, a sensor element arranged in the housing and at least one electrically conductive contact surface connected to at least one support plate connection elements. Background technique [0002] Such a pressure sensor is known, for example, from DE 43 17 312 A1. In such a pressure sensor, both the electrical connection element, the carrier plate and the electrical / electronic components arranged thereon, and the sensor element are accommodated and placed separately in the housing. At the same time, the pressure sensor, the carrier plate and the electrical connecting element are each electrically conductively connected to each other via connecting wires. [0003] A disadvantage of such a pressure sensor is that it is relatively expensive to produce, since the electrical connections, the carrier plate and the sensor element have to...

Claims

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Application Information

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IPC IPC(8): G01L19/00G01L9/00G01L19/04G01L19/14
CPCG01L19/147G01L19/0084G01L19/143G01L19/0069
Inventor 瓦尔特·勒特林斯赫费尔库尔特·魏布伦乌尔里希·格贝尔
Owner ROBERT BOSCH GMBH