CN203607337U - Large-current electromagnetic relay - Google Patents

Abstract

The utility model discloses a large-current electromagnetic relay which is formed by inserting and fixing a sampling assembly onto steps on two sides of an energy-saving large-current electromagnetic relay. The inner wall on one side of the sampling assembly is provided with an electronic sensor circuit board. The circuit board is provided with two temperature-sampling connecting rings and a current-sampling magnetic-conducting ring, wherein the two temperature-sampling rings are connected with two wiring copper columns. The circuit board is provided with a temperature control circuit, a circuit control circuit, an alarm circuit and a cut-off execution circuit. A power supply positive joint N, a negative joint E, a relay coil positive joint M and a signal amplification output joint K are sequentially installed on a plug outside the assembly. The plug is provided with a wiring socket of which wires are led out from the lower part. An overload and overheating sensor is additionally arranged based on the prior art, so that the large-current electromagnetic relay is high in withstand voltage level, small in size, low in energy consumption, long in service lifetime, safer in usage, and capable of timely sounding an alarm and cutting off an external load power supply circuit.

Description

A kind of large-current electric magnetic relay

Technical field:

The utility model is a kind of electromagnetic relay with the short circuit that prevents current overload and cause, the unsafe factor such as overheated that is particularly suitable for installing and using on motor vehicle.

Background technology:

Existing " energy-saving high-current electromagnetic relay " patent No. is 200910065110.5, it is parallelly on a shell made from engineering plastics is topped bar to be fixed with two wiring copper posts, on copper post, be bolted with respectively a clamp nut, on each nut, be respectively equipped with helmet, between helmet, there is divider wall, in shell, below step, be provided with a recessed tubular yoke in interior envelope curve circle bottom surface, the moving work durm of a upper surface indent is housed in tubular yoke, on tubular yoke, concentric is equipped with and pushes away frame, pushing away adjusting rod below frame is spirally connected through tubular yoke center and the back-moving spring and the moving work durm that are arranged in moving work durm, regulating tank is arranged at moving work durm bottom, push away in the card holder centre bore above frame and divide plywood by red copper of pressure overshoot spring supporting, divide both sides above plywood to be respectively equipped with moving contact, two copper column bottoms are provided with fixed contact, between sound contact, be provided with a deciliter chamber, deciliter indoor temperature sensing sensor that is provided with, on deciliter outer casing inner wall of both sides, chamber, by yoke, one secondary strong magnet is installed, on outer casing underpart one side inwall, circuit control panel is installed, its electric wire is drawn through sealing shroud from stepped hole.Although it has, dielectric voltage withstand rank is high, volume is little, lightweight, energy consumption is low, the advantage that the life-span is long, and, overload-alarm overheated because of not having and short circuit cutting function, exist certain unsafe factor.

Summary of the invention:

The purpose of this utility model is to provide the large-current electric magnetic relay that a kind of withstand voltage rank is high, volume is little, lightweight, energy consumption is low, the life-span is grown use safety and reliability.

The technical solution of the utility model completes as follows, a kind of large-current electric magnetic relay, it comprises an energy-saving high-current electromagnetic relay, it is characterized in that: on the step of the square housing both sides of an energy-saving high-current electromagnetic relay, be fixed with both sides with draw-in groove insertion and connect rectangular sampling assembly, on a side inwall of sampling assembly, an electronic sensor circuit board is installed, on circuit board, inwardly lead to two temperature sampling connecting rings that are connected with two wiring copper posts respectively, below a connecting ring, be parallel with the current sample magnetic guiding loop being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is to be connected in parallel to a resistance R 5 at the output of temperature sensor Q2 and Q3, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is to be connected with a capacitor C at the negative pole end of diode D1, the other end of capacitor C is connected with the current-limiting resistance R1 current-limiting resistance R1 other end and is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to power cathode joint E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V, L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug in assembly outside successively, on plug, be furnished with one by below draw the connector socket of wire, correspondingly with red light emitting diodes between two copper posts on assembly be provided with a transparent area.

The utility model is set up after an overload overheat sensor in prior art, the effect that not only have that withstand voltage rank is high, volume is little, energy consumption is low, the life-span is long, and use safer, can also and alarm and cut-out external load power supply circuits.

Accompanying drawing explanation:

Fig. 1 is structural representation of the present utility model; Fig. 2 is the sampling assembly structure schematic diagram that sensor circuit board is installed; Fig. 3 is the relay construction schematic diagram taking off after sampling assembly; Fig. 4 is this practical electrical schematic diagram.

Embodiment:

Describe by reference to the accompanying drawings embodiment in detail, the utility model is improvements over the prior art, main improvement is on the square housing both sides of an energy-saving high-current electromagnetic relay 1 step 12, to be fixed with both sides with draw-in groove 3 insertions to connect rectangular sampling assembly 2, on a side inwall of sampling assembly, an electronic sensor circuit board 11 is installed, on circuit board, inwardly lead to two temperature sampling connecting rings 5 and 7 that are connected with two wiring copper posts 6 respectively, below connecting ring 5, be parallel with the current sample magnetic guiding loop 4 being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is to be connected in parallel to a resistance R 5 at the output of temperature sensor Q2 and Q3, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is to be connected with a capacitor C at the negative pole end of diode D1, the other end of capacitor C is connected with current-limiting resistance R1, the current-limiting resistance R1 other end is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to anode connector E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V and L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug 9 in assembly outside successively, on plug, be furnished with one by below draw the connector socket 8 of wire, correspondingly with red light emitting diodes between two copper posts on sampling assembly be provided with a transparent area 10.

Operation principle of the present utility model is: positive source joint introduce direct current through diode D1 to current sensor Q1 and two temperature sensor Q2, Q3 power supply, current sensor Q1 in the time that electric current is excessive after current sample assembly dynamic sampling amplifies out splice going splice K output signal by resistance R 2 to signal, in the time of excess Temperature, by temperature sampling end dynamic sampling, two temperature sensor Q2, Q3 is through resistance R 3, the phase inverter of R4 and triode Q4 composition is to out splice going splice K end output signal, light red light emitting diodes D3 through output current simultaneously, out splice going splice K end receives the rear relay coil anode plug M terminal voltage that disconnects by external circuits after receiving signal, cut off V, connection between L, reach the object of protection power supply safety.

Claims (1)

1. a large-current electric magnetic relay, it comprises an energy-saving high-current electromagnetic relay, it is characterized in that: on the step of the square housing both sides of an energy-saving high-current electromagnetic relay, be fixed with both sides with draw-in groove insertion and connect rectangular sampling assembly, on a side inwall of sampling assembly, an electronic sensor circuit board is installed, on circuit board, inwardly lead to two temperature sampling connecting rings that are connected with two wiring copper posts respectively, below a connecting ring, be parallel with the current sample magnetic guiding loop being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is to be connected in parallel to a resistance R 5 at the output of temperature sensor Q2 and Q3, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is to be connected with a capacitor C at the negative pole end of diode D1, the other end of capacitor C is connected with the current-limiting resistance R1 current-limiting resistance R1 other end and is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to power cathode joint E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V, L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug in assembly outside successively, on plug, be furnished with one by below draw the connector socket of wire, correspondingly with red light emitting diodes between two copper posts on assembly be provided with a transparent area.

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