Sensor sealing technology
A sensor and process technology, applied in the field of sensors, can solve the problems of high difficulty in sealing implementation and poor sealing effect, and achieve the effect of maintaining elastic support, elastic force transmission, and small attenuation of force transmission
Active Publication Date: 2014-04-23
SICHUAN XINGDA MINKO ELECTR MECHANICAL ENG
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Problems solved by technology
[0004] The purpose of the present invention is to provide a sensor sealing process, which solves the problem of high difficulty in implementing traditional sensor sealing and poor sealing effect, and can easily realize the sealing and insulation of key sensor components without being limited by the sensor structure
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0019] see figure 1 , is a process flow chart of a sensor sealing process according to an embodiment of the present invention, including the following steps:
[0020] Step S201: brushing a layer of primer on the inner surface of the metal bracket where the sensor needs to seal the cavity;
[0021] Step S202: liquefy the silicone rubber, and inject it into the cavity of the sensor to be sealed by pouring;
[0022] Step S203: placing the sensor injected with liqui...
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The invention discloses a sensor sealing technology. The technology is characterized by: painting a layer of bottom masking liquid on an internal surface of a metal support of a sealing cavity needed by a sensor; then, using a pouring mode to inject silicone rubber which is mixed uniformly into the sealing cavity needed by the sensor so as to perform solidification; using the bottom masking liquid to bond the silicone rubber with the metal support which needs the sealing cavity into a whole body so as to form a sealing layer of the sensor. The sealing technology under a non-pressure state is used. The technology can not be limited by a senor structure and can be suitable for sealing the sensors with various kinds of complex structures. The characteristics of high elasticity and low compression deformation of the silicone rubber are used to prevent influence of metal support deformation of the sensor on sensor tightness. Simultaneously, the high elasticity of the silicone rubber can perform small attenuation during force transmission and the attenuation can be neglected in the structure of the microscale deformation. Therefore, the senor which is sealed by using the technology in an embodiment of the invention can still maintain elastic support of the sensor and elastic conduction under the condition of repeated impact.
Description
technical field [0001] The invention relates to the field of sensors, in particular to a sensor sealing process. Background technique [0002] Usually the sensitivity of the sensor will be affected by the insulation resistance, especially the amount of charge generated by the piezoelectric sensor will change with the change of the insulation value. The insulation value of the sensor is directly related to whether the sensor output signal is normal, and the insulation and sealing are directly related. If the sealing condition is not good, the insulation value will be smaller. When the sealing condition is affected by various reasons, the insulation value of the quartz piezoelectric sensor will be less than 4×10 10 Ω, it will cause the signal of the quartz piezoelectric sensor to deteriorate, and when the insulation value is less than 4×10 9 Ω, the sensor has no signal output. It can be seen that to ensure the normal output of the sensor signal, the good sealing of the senso...
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IPC IPC(8): G01D11/26
Inventor 黄晓吕建春胡平
Owner SICHUAN XINGDA MINKO ELECTR MECHANICAL ENG