Safety resistor capable of temperature control
A technology of temperature control and fuse resistance, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of unstable fusing temperature, affecting structural safety, low action accuracy, etc., to improve control accuracy, The effect of preventing misconnection and high control precision
Inactive Publication Date: 2017-04-26
ANHUI BOWEI ELECTRONICS TECH
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Problems solved by technology
However, most of the existing insurance resistors are nonlinear structures, the fusing temperature is not fixed, and the operation accuracy is low, which often affects the safety of the overall structure in some precision devices.
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[0014] see figure 1 , the present invention provides a technical solution: a fuse resistor with temperature control, including a fuse resistor body 1 and a temperature control mechanism 2, the fuse resistor body 1 includes a metal casing 3, and the temperature control mechanism 2 is installed in the metal casing 3, the inlet end of the metal shell 3 is connected with a contact wire 4, the contact wire 4 is inserted into the metal shell 4, and the part inside the metal shell 4 is sleeved with a ceramic sleeve 5, so The ceramic sleeve 5 has a cross-shaped structure, and telescopic springs 6 are installed on both sides of the front end of the sleeve, and the bottom end of the telescopic spring 6 is embedded in the ceramic, and the other end of the telescopic spring 6 is connected with a conductive gasket 7, so The back side of the conductive pad 7 is closely bonded to the top of the contact line 4, the front end of the conductive pad 7 is pasted with a contact electrode 8, and th...
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The invention discloses a safety resistor capable of temperature control. The safety resistor comprises a safety resistor body and a temperature control mechanism, wherein the safety resistor body comprises a metal outer shell, an input end of the metal outer shell is connected with a contact point line, a ceramic sleeve cylinder sleeves the contact point line, telescopic springs are mounted at two sides of a front end of the sleeve cylinder, a bottom end of each telescopic spring is embedded into ceramic in a spiral way, the other end of each spring is connected with an electric conductive gasket, a back face of the electric conductive gasket is closely and tightly bonded to a top end of the contact point line, a contact point electrode is adhered to a front end of the electric conductive gasket, a drum-shaped spring is bonded to a back face of the contact point electrode, the temperature control mechanism comprises a temperature sensing body, one face of the temperature sensing body is tightly bonded to the drum-shaped spring while the other face is bonded to an output electrode, a digital temperature sensor is bonded on an upper surface of the temperature sensing body, and an output end of the digital temperature sensor is connected with a surface-mounted single-chip microcomputer. Via the safety resistor disclosed in the invention, temperature control can be added, power off temperature can be freely set, automatic recovery can be realized after cooling, and high control precision can be attained.
Description
technical field [0001] The invention relates to the technical field of fuse resistors, in particular to a fuse resistor with temperature control. Background technique [0002] Under normal circumstances, the fuse resistor has the function of an ordinary resistor. Once the circuit fails and exceeds its rated power, it will disconnect the circuit within a specified time, so as to protect other components. When a short-circuit fault occurs in the circuit load and an overcurrent occurs, the temperature of the insurance resistor will rise to 500-600°C in a short period of time. The purpose of machine security. However, most of the existing insurance resistors are nonlinear structures, the fusing temperature is not fixed, and the operation accuracy is low, which often affects the safety of the overall structure in some precision devices. Contents of the invention [0003] In view of the above problems, the present invention provides a safety resistor with temperature control, ...
Claims
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IPC IPC(8): H01H71/12H01H71/14G05D23/20
CPCH01H71/123G05D23/20H01H71/14
Inventor 吕安徽
Owner ANHUI BOWEI ELECTRONICS TECH