CN210071918U - Mutual inductor structure with self-checking port - Google Patents
Mutual inductor structure with self-checking port Download PDFInfo
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- CN210071918U CN210071918U CN201920739523.6U CN201920739523U CN210071918U CN 210071918 U CN210071918 U CN 210071918U CN 201920739523 U CN201920739523 U CN 201920739523U CN 210071918 U CN210071918 U CN 210071918U
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Abstract
The utility model relates to a take mutual-inductor structure of self-checking port, including mutual-inductor shell and magnetic induction coil, magnetic induction coil sets up in mutual-inductor shell's inside, and mutual-inductor shell's central part is provided with the centre bore, and centre bore inside wall edge is moulded plastics has first through-hole and the second through-hole that two can supply the wire to pass, and first through-hole and second through-hole are located same terminal surface. The utility model discloses beneficial effect has solved the mutual-inductor and has needed the artifical test wire of wearing around two rings A-B + when the installation, has realized automated production, has improved work efficiency and because of the mutual-inductor structure is fixed, is connected with the copper foil between A + and the B when PCB wiring to fixed A-B + direction has avoided the artifical emergence of anti-wearing test wire B + -A condition.
Description
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to a take mutual-inductor structure of self-checking port.
Background
When the traditional mutual inductor is installed, two circles of A-B + testing wires need to be wound manually, the operation efficiency is low, and automatic production cannot be realized. If the leakage protector is used for leakage protection, the leakage protector cannot perform self-checking due to the fact that the leakage protector is penetrated into the position B + -A in a wrong penetrating direction. In order to solve the problem, the utility model provides a take mutual-inductor structure of self-checking port has realized automated production, has improved work efficiency and has avoided the emergence of the artifical anti-test wire B + -A condition structurally.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the prior art, providing a take mutual-inductor structure of self-checking port, realized the automated production of mutual-inductor, improved work efficiency and avoided the emergence of the artifical anti-wear test line B + -A condition.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model provides a take mutual-inductor structure of self-checking port, includes mutual-inductor shell and magnetic induction coil, magnetic induction coil set up in the inside of mutual-inductor shell, the central part of mutual-inductor shell is provided with the centre bore, centre bore inside wall edge is moulded plastics has two first through-holes and the second through-hole that can supply the wire to pass, first through-hole and second through-hole are located same terminal surface, the mutual-inductor shell is provided with A port pin, A + port pin, B + port pin, C port pin and D port pin outward, A port pin, A + port pin, B + port pin, C port pin and D port pin are located same terminal surface, C port pin and D port pin are connected magnetic induction coil's both ends respectively, A port pin, B port pin are moulded plastics on mutual-inductor shell and with C port pin, And the D-port pin is welded on the PCB at the same time.
Preferably, the central hole can simultaneously pass through two or more than two leads.
The utility model discloses beneficial effect has solved the mutual-inductor and has needed the artifical test wire of wearing around two rings A-B + when the installation, has realized automated production, has improved work efficiency and because of the mutual-inductor structure is fixed, is connected with the copper foil between A + and the B when PCB wiring to fixed A-B + direction has avoided the artifical emergence of anti-wearing test wire B + -A condition.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a front view of the present invention;
fig. 3 is a threading diagram of the present invention;
fig. 4 is an electrical diagram of the present invention;
fig. 5 is a circuit diagram of the present invention;
fig. 6 is a top view of the port pin of the present invention;
fig. 7 is a wiring diagram of the PCB board of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 in combination with fig. 2 to 7, a transformer structure with a self-checking port includes a transformer housing 1 and a magnetic induction coil, the magnetic induction coil is disposed inside the transformer housing 1, a central hole 2 is disposed in a central portion of the transformer housing 1, the central hole 2 can simultaneously pass through two or more wires, a first through hole 3 and a second through hole 4 are injection-molded on an edge of an inner side wall of the central hole 2, the first through hole 3 and the second through hole 4 are located on a same end surface, an a port pin A, A + a port pin a +, a B port pin B, B + B +, C port pin C and D port pin D are disposed outside the transformer housing 1, the a port pin A, A + a port pin, the B port pin B, B + B port pin, C port pin C and D port pin D are located on a same end surface, and the C port pin C and the D port pin D are respectively connected with two ends of the magnetic induction coil, and the A port pin A, B port pin B is injection-molded on the transformer shell 1 and is simultaneously welded on a PCB with the C port pin C, D port pin D.
The utility model provides a mutual-inductor need artifically wear to wind the test wire of two rings of A-B +, has realized automated production when the installation, has improved work efficiency and because of the mutual-inductor structure is fixed, is connected with the copper foil between A + and the B when PCB wiring to fixed A-B + direction has avoided the artifical emergence of anti-test wire B + -A condition of wearing.
The first through hole 3 can allow a hard wire to pass through A-A + and form pin ports (A port and A + port) of a loop, the second through hole 4 can allow a hard wire to pass through B-B + and form pin ports (B port and B + port) of a loop, the magnetic induction coil is arranged inside the transformer shell 1, an output C port pin C and a D port pin D are arranged outside the transformer shell 1, the C port pin C, D port pin D is used for outputting induction voltage after the transformer induces current of the A-B + loop, the center hole 2 of the transformer can simultaneously pass through two or more wires (such as a live wire L and a zero wire N), the A port pin A, A + the pin A + of the transformer shell 1, the B port pin B, B + the port pin B +, the C port pin C and the D port pin D are on the same end face, the A port pin A, the B port pin B + pin, the, And the B port pin B is injected on the transformer shell 1 and is welded on the PCB together with the C port pin C, D port pin D.
The working principle is as follows: referring to fig. 5, when the test key T is pressed in the power-on state, the test current flows from the live line L to the a port pin A, A + the port pin a +, the B port pin B to the B + port pin B +, and passes through the first resistor R1, the second resistor R2 and No to form a loop current, the loop current outputs an induced voltage to the C port pin C, D port pin D through the magnetic induction coil, and the induced voltage is proportional to the leakage current of the a port pin A, B + the port pin B +, thereby effectively performing leakage protection.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (2)
1. The utility model provides a take mutual-inductor structure of self-checking port which characterized in that: including mutual-inductor shell (1) and magnetic induction coil, magnetic induction coil set up in the inside of mutual-inductor shell (1), the central part of mutual-inductor shell (1) is provided with centre bore (2), centre bore (2) inside wall edge is moulded plastics has first through-hole (3) and second through-hole (4) that two confession wires passed, first through-hole (3) and second through-hole (4) are located same terminal surface, mutual-inductor shell (1) is provided with A port pin (A) outward, A + port pin (A +), B port pin (B), B + port pin (B +), C port pin (C) and D port pin (D), A port pin (A), A + port pin (A +), B port pin (B), B + port pin (B +), C port pin (C) and D port pin (D) are located same terminal surface, and the C port pin (C) and the D port pin (D) are respectively connected with two ends of the magnetic induction coil, and the A port pin (A) and the B port pin (B) are injected on the transformer shell (1) and are simultaneously welded on the PCB with the C port pin (C) and the D port pin (D).
2. The transformer structure with the self-test port of claim 1, wherein: the central hole (2) can simultaneously pass through two or more than two leads.
Priority Applications (1)
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CN201920739523.6U CN210071918U (en) | 2019-05-14 | 2019-05-14 | Mutual inductor structure with self-checking port |
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CN201920739523.6U CN210071918U (en) | 2019-05-14 | 2019-05-14 | Mutual inductor structure with self-checking port |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113948925A (en) * | 2020-07-15 | 2022-01-18 | 余姚市嘉荣电子电器有限公司 | Mutual inductor and leakage protector suitable for automatic installation |
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2019
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113948925A (en) * | 2020-07-15 | 2022-01-18 | 余姚市嘉荣电子电器有限公司 | Mutual inductor and leakage protector suitable for automatic installation |
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