Resistance strained sensor with protector
A technology of resistance strain type and protection device, which is applied in the field of sensors, can solve the problems affecting the normal use of sensors, the influence of overall planning, and the difficulty of installation and debugging, and achieve the effect of simple structure, low production cost and avoiding installation errors
Inactive Publication Date: 2007-12-26
常熟市百灵天平仪器有限公司
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Problems solved by technology
The existing limiter and the main body of the sensor are generally installed separately and are not integrated together. Even sensors with a limiter are only limited to larger volumes. For general small-volume strain gauge sensors, there is no limiter. Therefore, it is very difficult to install and debug, especially for the adjustment of the limit gap that requires high precision, often due to the large installation error, which affects the normal use of the sensor
In addition, since the performance of the sensor depends on the physical properties of the elastic body and the resistance strain gauge, the shape of the elastic body and the resistance strain gauge cannot be greatly changed under the condition of meeting the use requirements, and when such a sensor is applied to the product In the middle, it has an impact on the overall planning of each component in the product design
Method used
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[0015] As shown in FIG. 1 , the resistance strain sensor with protective device according to the present invention includes an elastic body 1 , a resistance strain gauge 2 , a contact 3 and a protective cover 6 . The elastic body 1 of the present embodiment is a double-connected round-hole elastic body. Of course, a plum-shaped four-hole elastic body, a three-beam bending elastic body or a three-beam shearing elastic body can also be used. The elastic body 1 has a fixed end 4 and The free end 5 and the resistance strain gauge 2 are pasted on the upper and lower surfaces of the middle section of the elastic body 1, and are connected with an external detection circuit through wires. The contact 3 is fixed on the upper surface of the free end 5 of the elastic body through screw connection. The protective cover 6 is provided with a concave cavity 7, the elastic body 1, the strain gauge 2 and the contact 3 are all arranged in the concave cavity 7, a boss 8 is provided on one side o...
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A transducer of resistance strain type with protective device is prepared as sticking resistance foil gauge on elastic body surface, fixing contact on free end of elastic body, setting cavity in protective sleeve, setting boss for fixing elastic body fixing end at one side of cavity bottom surface and setting bosses having spacing gap and corresponding to elastic body free end separately on top surface and bottom surface of cavity, and setting through hole on protective sleeve to let contact pass.
Description
1. Technical field [0001] The invention relates to a sensor, in particular to a resistance strain sensor with a protection device. 2. Background technology [0002] The sensor is an electronic detection device that can receive the information of the object to be measured, and convert the detected information into an electrical signal or other required forms of information according to certain rules and then output it to meet the requirements of information transmission, processing, storage, display, recording and control requirements. It is the first link to realize automatic detection and automatic control. Sensors are classified according to their working principles and can be divided into resistance, capacitance, electromagnetic, inductance, voltage, Hall, photoelectric, grating, thermocouple and other sensors. Resistance strain sensor is a kind of resistive sensor, which is mainly used as a measuring sensor for electronic weighing instruments. [0003] The structure o...
Claims
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IPC IPC(8): G01G3/14G01G23/00
Inventor 沈传莱
Owner 常熟市百灵天平仪器有限公司