CN219369861U - Coil connecting piece for current sensor - Google Patents

Abstract

The utility model discloses a coil connecting piece for a current sensor, which comprises a pin assembly and a fixing groove arranged in a shell and used for fixing the pin assembly, wherein the pin assembly comprises two groups of L-shaped pins which are arranged in parallel and a fixing seat used for fixing the L-shaped pins, the L-shaped pins comprise a vertical section used for being electrically connected with a circuit board and a parallel section used for being electrically connected with a leading-out end of the coil assembly, the parallel section is arranged at one side far away from the coil assembly, the fixing seat is embedded in the fixing groove, two wire slots are arranged at the bottom of the fixing seat, and a wiring channel which can be used for the leading-out end of the coil assembly to pass through and be electrically connected with the parallel section is formed between the wire slots and the bottom surface of the fixing groove. The wire slot is arranged at the bottom of the fixing seat, so that the traction and the fixation of the leading-out ends at the two ends of the coil assembly are facilitated, and the mutual noninterference between the two leading-out ends can be effectively ensured.

Description

Coil connecting piece for current sensor

Technical Field

The utility model particularly relates to a coil connecting piece for a current sensor, and belongs to the technical field of current sensor preparation.

Background

The current transformer is an instrument for converting primary side large current into secondary side small current according to an electromagnetic induction principle to measure. Each link of the power system, including power generation, power transmission and distribution, needs to measure, protect and control the line. However, the current in the line is small and the line voltage is also relatively high, which is very dangerous if the measurement is directly carried out, for which purpose the current transformer takes on such a measurement. It can be seen that current transformers are extremely important in power systems.

The current sensor generally has two structures of open loop and closed loop, but the closed loop current sensor is generally installed and fixed between the coil magnetic core assembly and the main circuit board, and the two needs to be electrically connected, for example, chinese patent CN 201796075U discloses a coil skeleton kit for a current sensor, which utilizes a pin 3 to realize electrical connection between the main circuit board and the coil, but since the pin directly passes through the skeleton, and a certain gap exists between the skeleton and the main circuit board, the main circuit board 2 and the skeleton 1 are supported only by two pins 3, and simultaneously, two outgoing ends of the coil are respectively connected with pins located at two sides, which results in that the outgoing ends cannot be well limited in direction, because the wire itself is relatively soft, if the wire is not straightened when being welded with the pins, and meanwhile, because the wire extends towards two sides, which results in relatively difficult straightening, the wire may contact with the coil itself, and the detection effect is affected.

Disclosure of Invention

In view of the shortcomings of the prior art, an object of the present utility model is to provide a coil connector for a current sensor.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a coil connecting piece for current sensor, its includes contact pin subassembly and sets up the fixed slot that is used for fixed contact pin subassembly in the casing, contact pin subassembly includes two sets of parallel arrangement's L type contact pin and is used for the fixing base of fixed L type contact pin, L type contact pin is including being used for the perpendicular section of being connected with the circuit board electricity and being used for the parallel section of being connected with coil assembly's leading-out end electricity, and wherein the parallel section setting is in the one side of keeping away from coil assembly, the fixing base inlays and locates in the fixed slot, and its bottom is equipped with two wire casings, form between wire casing and the bottom surface of fixed slot and supply coil assembly's leading-out end to pass and be connected with the parallel section electricity walk the line passageway.

The L-shaped contact pin and the fixing seat are integrally injection molded.

The two sides of the fixing seat are provided with protruding blocks, the two sides of the fixing groove are correspondingly provided with limiting grooves, and the protruding blocks and the slidable parts are arranged in the limiting grooves.

The two sides of the bottom end of the convex block are provided with first inclined planes.

The bottom surface of the limiting groove is higher than the bottom surface of the fixing groove.

The upper end of the limiting groove extends outwards in the circumferential direction to form a horn mouth.

And second inclined planes are arranged on two sides of the bottom end of the fixed seat.

The utility model has the beneficial effects that: the parallel section that links to each other with coil assembly's leading-out end through with L type contact pin keeps away from coil assembly direction setting, has avoided its risk that probably impales coil assembly, is equipped with the wire casing in the fixing base bottom simultaneously, and the traction and the fixed of the leading-out end at the coil assembly both ends of being convenient for can effectually have guaranteed the mutual noninterference between two leading-out ends.

Drawings

Fig. 1 is a schematic cross-sectional view of the present utility model for a current transformer.

Fig. 2 is a schematic structural diagram of the present utility model mated with a circuit board and a coil assembly.

FIG. 3 is a schematic diagram of the present utility model.

Fig. 4 is an enlarged schematic view of fig. 3 at a.

Fig. 5 is an enlarged schematic view of the fixing groove.

Fig. 6 is a schematic structural view of a pin assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

As shown in the drawings, the utility model discloses a coil connecting piece for a current sensor, which comprises a pin assembly 4 and a fixing groove 5 arranged in a shell 1 and used for fixing the pin assembly, wherein the shell is generally formed by combining an upper shell and a lower shell, the fixing groove is generally arranged in a half shell where the coil assembly is located, the pin assembly comprises two groups of parallel L-shaped pins and a fixing seat used for fixing the L-shaped pins, the L-shaped pins comprise a vertical section 422 used for being electrically connected with a circuit board 2 and a parallel section 421 used for being electrically connected with a leading-out end of the coil assembly 3, the circuit board 2 can be arranged above the coil assembly 3 through the design of the vertical section vertical parallel section, the parallel section is arranged on one side far away from the coil assembly, the tip of the parallel section is prevented from being directly contacted with the coil assembly, the phenomenon of damaging the coil assembly is caused, meanwhile, the leading-out end of the coil assembly is also prevented from being further straightened, the two L-shaped pins are always kept at a certain distance, the fixing seat 41 is embedded in the fixing groove 5, the bottom of the L-shaped pin assembly is provided with two wire grooves 412, and the bottom of the L-shaped pins 412 and the wire grooves can be connected with the leading-out ends of the coil assembly through the parallel channels.

The vertical section of the L-shaped contact pin passes through the circuit board and is welded with the circuit board to realize electric connection, and the leading-out ends of the coil assembly are welded and fixed with the corresponding parallel sections respectively to realize electric connection of the circuit board and the coil assembly.

The L-shaped contact pin and the fixing seat are integrally injection molded, the distance between the two L-shaped contact pins is always kept consistent by using injection molding, and the structure is more reliable.

The utility model provides a coil assembly, including fixing base, lug 411 and slidable setting are equipped with the lug 411 in the both sides of fixing base, the lug 411 sets up in the both sides of fixing base for the both sides of fixing base are not the plane, and then with the spacing groove 51 cooperation that sets up in the fixing base, play the front and back position of fixing base and inject, only can pack into downwards from the upside of groove, realize the fixed effect in position, because the parallel section of this application is in the one side that is not close to the coil assembly with the junction of coil assembly's leading-out end, and then the front end of this fixing groove is equipped with the lead terminal inlet port, consequently the size of fixing base is limited the effect of fixing base very much not good.

The two sides of the bottom end of the protruding block 411 are provided with first inclined planes 413, so that the protruding block is convenient to insert into the limiting groove, and then the protruding block and the limiting groove play a limiting role.

The bottom surface 52 of the limiting groove is higher than the bottom surface 54 of the fixing groove, so that two sides of the fixing seat placed in the fixing groove are limited by the limiting groove, a gap is formed between the fixing seat and the bottom surface 54 of the fixing groove, the leading-out ends of the coil assembly can conveniently pass through the gap, and the guiding and fixing functions of the two leading-out ends are realized by the wire grooves arranged at the bottom of the fixing groove.

The upper end circumference of the limit groove extends outwards to form a horn mouth 53, so that the upper end opening of the limit groove is larger, and the protruding block 411 of the fixing seat can slide in conveniently.

Two sides of the bottom end of the fixing seat are provided with second inclined planes 414, and the second inclined planes enable the bottom of the whole fixing seat to be slightly smaller and better placed into the fixing groove.

The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.

Claims (7)

1. A coil connector for a current sensor, characterized by: the novel wire winding device comprises a contact pin assembly and a fixing groove which is arranged in a shell and used for fixing the contact pin assembly, wherein the contact pin assembly comprises two groups of L-shaped contact pins which are arranged in parallel and a fixing seat used for fixing the L-shaped contact pins, each L-shaped contact pin comprises a vertical section which is electrically connected with a circuit board and a parallel section which is electrically connected with a leading-out end of the coil assembly, the parallel section is arranged on one side far away from the coil assembly, the fixing seat is embedded in the fixing groove, two wire grooves are formed in the bottom of the fixing seat, and a wire passage which can be used for the leading-out ends of the coil assembly to pass through and is electrically connected with the parallel section is formed between the wire grooves and the bottom surface of the fixing groove.

2. A coil connector for a current sensor according to claim 1, wherein: the L-shaped contact pin and the fixing seat are integrally injection molded.

3. A coil connector for a current sensor according to claim 1, wherein: the two sides of the fixing seat are provided with protruding blocks, the two sides of the fixing groove are correspondingly provided with limiting grooves, and the protruding blocks and the slidable parts are arranged in the limiting grooves.

4. A coil connector for a current sensor according to claim 3, wherein: the two sides of the bottom end of the convex block are provided with first inclined planes.

5. A coil connector for a current sensor according to claim 3, wherein: the bottom surface of the limiting groove is higher than the bottom surface of the fixing groove.

6. A coil connector for a current sensor according to claim 3, wherein: the upper end of the limiting groove extends outwards in the circumferential direction to form a horn mouth.

7. A coil connector for a current sensor according to claim 1, wherein: and second inclined planes are arranged on two sides of the bottom end of the fixed seat.