CN106710987A

CN106710987A - Safety resistor with temperature control function

Info

Publication number: CN106710987A
Application number: CN201611056092.0A
Authority: CN
Inventors: 方彬辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-26
Filing date: 2016-11-26
Publication date: 2017-05-24

Abstract

The invention discloses a safety resistor with a temperature control function. The safety resistor comprises a safety resistor body and a temperature control mechanism, the safety resistor body comprises a metal shell, the inlet end of the metal shell is connected with a contact wire, the contact wire is sleeved with a ceramic bushing, a telescopic spring is mounted on each of two sides of the front end of the bushing, the bottoms of the telescopic springs are spirally embedded into ceramic, the other end of the telescopic spring is connected with a conductive gasket, the back of the conductive gasket is tightly stuck to the top of the contact wire, a contact electrode is attached to the front end of the conductive gasket, a barrel-shaped spring is stuck to the back of the contact electrode, the temperature control mechanism comprises a temperature sensing body, one side of the temperature sensing body is attached to the barrel-shaped spring, the other side of the temperature sensing body is stuck with an output electrode, a digital temperature sensor is stuck to the upper surface of the temperature sensing body, and the output end of the digital temperature sensor is connected with a patch type singlechip. The safety resistor can increase temperature control, freely set the power-off temperature and restore after cooling, and has high control precision.

Description

One kind has temperature controlled insurance resistance

Technical field

It is specially a kind of that there is temperature controlled insurance resistance the present invention relates to insure resistive technologies field.

Background technology

Insurance resistance has the function of conventional, electric-resistance under normal circumstances, once circuit breaks down, more than its specified work( During rate, it understands disconnecting circuit at the appointed time, and the effect of other components is protected so as to reach.It is short-circuited in circuit load Failure, when there is excessively stream, the temperature for insuring resistance will be increased to 500-600 DEG C in a short period of time, and at this moment resistive layer is just Fused by thermal spalling, play a part of insurance, reach the purpose for improving whole machine security.But existing insurance resistance, greatly Mostly nonlinear organization, fusing-off temperature is not fixed, and operation precision is low, often influences overall structure to pacify in some accurate devices Quan Xing.

The content of the invention

For problem above, there is temperature controlled insurance resistance the invention provides one kind, by increasing capacitance it is possible to increase temperature control, Power-off temperature is freely set, and can be high with self- recoverage, control accuracy after cooling, in can effectively solving the problems, such as background technology.

To achieve the above object, the present invention provides following technical scheme：One kind has temperature controlled insurance resistance, including Insurance resistance sheet and temperature control device, the insurance resistor main body include metal shell, and the temperature control device is arranged on The output end of metal shell, the arrival end of the metal shell is connected with contact line, and the contact line is inserted into metal shell Portion, and part in metal shell is socketed with ceramic sleeve, the ceramic sleeve across structure, the front end two of sleeve Side is mounted on adjustable spring, and the bottom spiral of adjustable spring is embedded in ceramics, and the other end of adjustable spring is connected with leads Electrical pad piece, on the top of contact line, the front end of conductive spacer is fitted with contact electrode to the back side tight bond of the conductive spacer, The back side of the contact electrode is bonded with barrel-shaped spring, and the other end of the barrel-shaped spring is connected to temperature control device, described Temperature control device includes temperature sensor, and the one side of the temperature sensor clings to barrel-shaped spring, and another side is bonded with output electrode, and The upper surface letter of temperature sensor is bonded with digital temperature sensor, and the output end of the digital temperature sensor is connected with SMD list Piece machine.

Used as a kind of preferred technical scheme of the present invention, the SMD single-chip microcomputer uses MSP430 embeded processors, Also covered installed in the surface of the upper surface of metal shell, and SMD single-chip microcomputer and be connected to heat insulation protection cover.

Used as a kind of preferred technical scheme of the present invention, the output end of the SMD single-chip microcomputer is also associated with solid-state relay Device, the normally opened end of the solid-state relay is connected in output electrode, and the other end is connected with nickel wiring, and metal is stretched out in nickel wiring Shell forms output pin.

Used as a kind of preferred technical scheme of the present invention, the junction of the contact line, nickel wiring and metal shell covers Sealing resin is connected to, the sealing resin is made of epoxy resin.

Used as a kind of preferred technical scheme of the present invention, the input outermost of the metal shell is socketed with bottom, defeated Go out to hold outermost to be socketed with taper block.

Compared with prior art, the beneficial effects of the invention are as follows：There should be temperature controlled insurance resistance, be stretched by setting Contracting spring and barrel-shaped spring, connect conductive spacer and contact electrode respectively, using the telescopicing performance of spring, degree of realization circuit it is logical Disconnected control；By setting temperature sensor, temperature acquisition is carried out using digital temperature sensor and SMD single-chip microcomputer, using solid-state after Electrical equipment carries out real-time control, improves control accuracy；By setting bottom and taper block, input/output terminal is more convenient for Distinguish, prevent misconnection from operating；The present invention can increase temperature control, freely set power-off temperature, and cooling after can with self- recoverage, Control accuracy is high.

Brief description of the drawings

Fig. 1 is schematic structural view of the invention.

In figure：1- insures resistor main body；2- temperature control devices；3- metal shells；4- contact lines；5- ceramic sleeves；6- Adjustable spring；7- conductive spacers；8- contact electrodes；9- barrel-shaped springs；10- temperature sensors；11- output electrodes；12- digital temperatures are passed Sensor；The SMD single-chip microcomputers of 13-；14- heat insulation protection covers；15- solid-state relays；16- nickel wiring；17- seals resin；18- bottoms Lid；19- taper blocks.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Embodiment：

Fig. 1 is referred to, the present invention provides a kind of technical scheme：One kind has temperature controlled insurance resistance, including insurance resistance Body 1 and temperature control device 2, the insurance resistor main body 1 include metal shell 3, and the temperature control device 2 is arranged on gold Belong to the output end of shell 3, the arrival end of the metal shell 3 is connected with contact line 4, and the contact line 4 is inserted into metal shell 4 Inside, and part in metal shell 4 is socketed with ceramic sleeve 5, the across structure of the ceramic sleeve 5, sleeve Front end both sides are mounted on adjustable spring 6, and the bottom spiral of adjustable spring 6 is embedded in ceramics, the other end of adjustable spring 6 Conductive spacer 7 is connected with, the back side tight bond of the conductive spacer 7 on the top of contact line 4, paste by the front end of conductive spacer 7 The back side that conjunction has contact electrode 8, the contact electrode 8 is bonded with barrel-shaped spring 9, and the other end of the barrel-shaped spring 9 is connected to Temperature control device 2, the temperature control device 2 includes temperature sensor 10, and the one side of the temperature sensor 10 clings to barrel-shaped spring 9, another side is bonded with output electrode 11, and the upper surface letter of temperature sensor 10 is bonded with digital temperature sensor 12, the numeral The output end of temperature sensor 12 is connected with SMD single-chip microcomputer 13；

The SMD single-chip microcomputer 13 uses MSP430 embeded processors, installed in the upper surface of metal shell 3 and SMD Also cover and be connected to heat insulation protection cover 14 in the surface of single-chip microcomputer 13；The output end of the SMD single-chip microcomputer 13 is also associated with solid-state relay 15, the normally opened end of the solid-state relay 15 is connected in output electrode 11, and the other end is connected with nickel wiring 16, nickel wiring 16 Stretch out metal shell 3 and form output pin；The contact line 4, nickel wiring 16 and the junction of metal shell 3 are socketed with sealing Resin 17, the sealing resin 17 is made of epoxy resin；The input outermost of the metal shell 3 is socketed with bottom 18, output end outermost is socketed with taper block 19.

Operation principle of the invention：The insurance resistor main body 1 is the primary structure of insurance resistance, the temperature controller Structure 2 is used to realize temperature setting and controls, and the metal shell 3 is used to install all structures of inside, and the contact line 4 is used for Contact point is connected to, circuit is introduced as input, the ceramic sleeve 5 has good insulating properties and heat resistance, uses In connection adjustable spring 6 and fixed contact line 4；The adjustable spring 6 is used to realize that conductive spacer 7 connects with the elasticity of contact line 4 Connect so that conductive spacer 7 is closely connected when can realize elastic connection, i.e. normal work with contact electrode 8, received during open circuit protection Contracting is disconnected；

The barrel-shaped spring 9 is used to be closely joined together contact electrode 8 with temperature control device 2, and the temperature sensor 10 has There is good heat-conductive characteristic, the temperature that current electric current is produced, the digital temperature sensing can be rapidly reflected in time Device 12 can carry out Real-time Collection, and directly output digit signals to current temperature value, and the SMD single-chip microcomputer 13 is thick Spend thin small volume, can data of the real-time reception from digital temperature sensor 12, in SMD single-chip microcomputer 13 in advance under be loaded with Control program, the temperature value that will can be received is compared with the temperature value in preset program, judges whether to reach setting threshold Value and whether electric current reaches maximum limitation, when critical value is reached, SMD single-chip microcomputer 13 export immediately high level to solid-state after The control end of electrical equipment 15, solid-state relay 15 is from normally opened end jumper connection to normal-closed end, so as to disconnect output electrode 11 and nickel wiring 16 Between connecting path；After electric current falls temperature to be recovered, SMD single-chip microcomputer 13 exports low level by solid-state relay 15 again Reset condition is retracted, self- recoverage is realized；

The heat insulation protection cover 14 is used to protect SMD single-chip microcomputer 13, prevents the internal junction of the SMD single-chip microcomputer 13 of high temperature failure Structure causes chip to damage, and the sealing resin 17 is made of epoxy resin, with good partiting thermal insulation sealing property, can Effectively prevent contact line 4 and nickel wiring 16 from coming off；The bottom 18 and taper block 19 are respectively used to cover and are connected on input/output terminal, For realizing output output identification, connection error can be effectively prevented.

There should be temperature controlled insurance resistance, by setting adjustable spring 6 and barrel-shaped spring 9, conductive pad be connected respectively Piece 7 and contact electrode 8, using the telescopicing performance of spring, the break-make of degree of realization circuit is controlled；By setting temperature sensor 10, utilize Digital temperature sensor 12 and SMD single-chip microcomputer 13 carry out temperature acquisition, and real-time control is carried out using solid-state relay 15, carry Control accuracy high；By setting bottom 18 and taper block 19, input/output terminal differentiation is more convenient for, prevents misconnection from grasping Make；The present invention can increase temperature control, freely set power-off temperature, and can be high with self- recoverage, control accuracy after cooling.

Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims

1. it is a kind of that there is temperature controlled insurance resistance, including insurance resistor main body（1）And temperature control device（2）, the guarantor Dangerous resistor main body（1）Including metal shell（3）, the temperature control device（2）Installed in metal shell（3）Output end, its It is characterised by：The metal shell（3）Arrival end be connected with contact line（4）, the contact line（4）It is inserted into metal shell （3）Inside, and positioned at metal shell（3）Interior part is socketed with ceramic sleeve（5）, the ceramic sleeve（5）Across knot Structure, the front end both sides of sleeve are mounted on adjustable spring（6）, and adjustable spring（6）Bottom spiral be embedded in ceramics, stretch Spring（6）The other end be connected with conductive spacer（7）, the conductive spacer（7）Back side tight bond in contact line（4）Top End, conductive spacer（7）Front end be fitted with contact electrode（8）, the contact electrode（8）The back side be bonded with barrel-shaped spring（9）, The barrel-shaped spring（9）The other end be connected to temperature control device（2）, the temperature control device（2）Including temperature sensor （10）, the temperature sensor（10）One side cling to barrel-shaped spring（9）, another side is bonded with output electrode（11）, and temperature sensor （10）Upper surface letter be bonded with digital temperature sensor（12）, the digital temperature sensor（12）Output end be connected with patch Chip single-chip microcomputer（13）.

2. according to claim 1 a kind of with temperature controlled insurance resistance, it is characterised in that：The SMD monolithic Machine（13）Using MSP430 embeded processors, installed in metal shell（3）Upper surface, and SMD single-chip microcomputer（13）Table Also cover and be connected to heat insulation protection cover in face（14）.

3. according to claim 1 a kind of with temperature controlled insurance resistance, it is characterised in that：The SMD monolithic Machine（13）Output end be also associated with solid-state relay（15）, the solid-state relay（15）Normally opened end be connected to output electricity Pole（11）On, the other end is connected with nickel wiring（16）, nickel wiring（16）Stretch out metal shell（3）Form output pin.

4. according to claim 1 a kind of with temperature controlled insurance resistance, it is characterised in that：The contact line（4）、 Nickel wiring（16）With metal shell（3）Junction be socketed with sealing resin（17）, the sealing resin（17）Using epoxy Resin is made.

5. according to claim 1 a kind of with temperature controlled insurance resistance, it is characterised in that：The metal shell （3）Input outermost be socketed with bottom（18）, output end outermost is socketed with taper block（19）.