JP2528888Y2 - AC inlet filter connector - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention is an AC with a built-in filter element for noise removal.
The present invention relates to an inlet filter connector.

(Summary of the Invention) The present invention relates to an AC inlet filter connector having a built-in common mode choke coil as a filter element for removing noise. In the AC inlet filter connector, each of a pair of input terminals is connected to an output terminal via an insulating member, thereby providing an output terminal. To prevent the movement of the common mode choke coil together with the ground terminal and the common mode choke coil.The structure is simplified compared to the case where an insulating case for accommodating the common mode choke coil is provided separately. This is to improve productivity.

(Problems to be Solved by Conventional Techniques and Inventions) Conventionally, as a resin sealing structure of a common mode choke coil, a configuration using a lead frame 20 as shown in FIGS. 6 and 7 has been known. I have. In this case, as shown in FIG. 6, a common mode choke having a pair of windings between the mutually positioned terminals using a lead frame 20 in which a pair of input terminals 21 and output terminals 24 are formed. The coil 3 is arranged, and one end of each winding 5 of the common mode choke coil 3 is connected to each input terminal 21 and the other end is connected to each output terminal 24. Then, as shown in FIG. 7, encapsulation resin molding is performed using a resin molding die so as to cover the end where the common mode choke coil 3 and the winding 5 of each terminal are connected. A lead frame that extends outside the resin molded body 25 that becomes an insulating case after resin molding
By cutting 20 as shown by a dashed line X, a resin-sealed structure of a common mode choke coil having a pair of input terminals and output terminals can be obtained.

However, for input / output terminals that are large and have specific shapes, such as AC inlet filter connectors, and that have a large terminal thickness, it is difficult to form the lead frame itself, and material removal is poor, and many parts are discarded. Costly.

On the other hand, instead of using a lead frame, as shown in FIG. 8, a filter element is used by using a pair of AC power input terminals 1 and a ground terminal (not shown) and a pair of AC power output terminals 4 which are mutually independent. It is conceivable to connect one end of each winding 5 of the common mode choke coil 3 to each input terminal 1 and the other end to each output terminal 4 and then integrally mold them with resin.

In the case of FIG. 8, a pair of input terminals 1
Although the ground terminal and the ground terminal can be positioned on one resin molding die side, the output terminal 4 is connected to the common mode choke coil 3 and its position is unstable and easy to move. Alignment becomes extremely difficult. Therefore, it is extremely difficult to practically use the configuration shown in FIG.

Therefore, in order to prevent the movement of the output terminal, an AC inlet filter connector having a structure as shown in FIG. 9 has been considered by the present inventors. This uses an input / output terminal 22 in which an AC power input terminal and an output terminal are integrally connected in a U-shape. In this case, a pair of input / output terminals 22 are used.
Is connected to one end of each winding 5 of the common mode choke coil 3 and the other end to the hole 27B, respectively, and integrally formed with a ground terminal (not shown) with resin. At that time, the U-shaped connecting portion 28 of the input / output terminal 22 is made to protrude from the side surface of the resin molded body, and after forming the resin molded body,
The U-shaped connecting portion 28 protruding from the side surface of the resin molded body is cut and removed as shown by a dashed line Y. As a result, the connected pair of input terminals and output terminals are separated to form a required electric circuit.

By the way, in the structure using the terminal in which the input terminal and the output terminal are integrated as shown in FIG. 9, it is easy to fix the position of the output terminal at the time of resin molding. Will be exposed on the sides. Moreover, since the power supply voltage is applied to each terminal, the exposed part (live parts)
Dislikes the need for insulation protection and treatment for rust prevention.

In view of the above points, the present invention provides an input terminal, a ground terminal,
The output terminal and the common mode choke coil are integrally molded with resin, and the resin molded body is used as an insulating case to simplify the structure and to facilitate the fixing of the position of the input terminal and output terminal during resin molding, and yield. And an AC inlet filter connector that improves the productivity.

(Means for Solving the Problems) In order to achieve the above object, according to the present invention, a pair of input terminals and a ground terminal whose tips project from a front recess of an insulating case, and are arranged behind the front recess. In an AC inlet filter connector including a common mode choke having a pair of windings and a pair of output terminals drawn out to the back side of the insulating case, the input terminal and the output terminal are connected by a rectangular parallelepiped connecting resin member. The input terminal and the output terminal are connected and integrated in a separated state by covering only the side end, and one end of each winding of the common mode choke coil arranged outside the connection resin member is connected to each input terminal, and the other end is connected to the input terminal. Are connected to the respective output terminals, and the input terminal, the output terminal, the ground terminal, and the common mode choke coil are molded integrally with a resin. It is characterized by the fact that it constitutes a source.

(Operation) In the AC inlet filter connector of the present invention,
Since the input terminal and the output terminal are connected in an insulated state via a rectangular parallelepiped connection resin member, the positional relationship between the input terminal and the output terminal is stably fixed, and the common mode choke coil is wound around each terminal. The work of connecting the wire ends and integrally molding the ground terminal with the resin is facilitated, and the displacement of the output terminal due to the impact during the resin molding can be prevented. As a result, the occurrence of defective products can be prevented, and the yield can be improved. Further, as compared with the case where a lead frame is used, there is no waste in the terminal material, so that the material cost can be reduced.

(Embodiment) Hereinafter, an embodiment of the AC inlet filter connector according to the present invention will be described with reference to the drawings.

1 to 3 show a first embodiment of the present invention. In these figures, an AC inlet filter connector comprises a pair of AC power input terminals 1, a ground terminal 2, and a common mode choke coil as a filter element. 3 and a pair of AC
And a power output terminal 4.

Here, as shown in FIG. 3, the AC power input terminal 1 and the AC power output terminal 4 are previously insulated by a rectangular parallelepiped connecting resin member 6 obtained by integrally molding with an insulating resin in a state where both are separated. It is connected and integrated. That is, the rectangular parallelepiped connection resin member 6 covers only the connection side ends of the AC power supply input terminal 1 and the AC power supply output terminal 4 to connect and integrate the input terminal 1 and the output terminal 4 in a separated state as shown in the figure. ing. The input terminal 1 has one hole 7A to which one end of the winding 5 of the common mode choke coil 3 is connected, and the output terminal 4 has a hole 7B to which the other end of the winding is connected and an external connection lead. Holes 7C are formed.

2, one end of each winding 5 of the common mode choke coil 3 is connected to the hole 7A of each input terminal 1 and the other end of each winding 5 is connected to the hole 7B of each output terminal 4 so as to constitute the electric circuit of FIG. Each is connected by soldering or the like. Then, the pair of AC power input terminals 1 and the ground terminal 2 are positioned and fixed in a resin molding die, and the resin molding die is integrally molded with, for example, a thermoplastic resin to form a resin molded body 8. This resin molded body 8 constitutes an insulating case,
The input terminal 1 and the ground terminal 2 are made of resin so that one end of the pair of the input terminal 1 and the ground terminal 2 protrudes into the recess 9. It will be fixed to the molded body 8. The other end of the ground terminal 2 and the ends of the pair of output terminals 4 are drawn out to the back side of the resin molded body 8. The mounting collar 10
Has a mounting hole 17 formed therein.

FIG. 4 shows a second embodiment of the present invention, in which a rectangular parallelepiped connecting resin member 11 previously formed of insulating resin is used to connect the AC power input terminal 1 and the AC power output terminal 4. . The connecting resin member 11 has insertion recesses 13 at both end surfaces into which the terminals are inserted. Further, insertion portions 12 are provided at the ends where the input terminals 1 and the output terminals 4 are connected, and the insertion portions 12 are connected to the connection resin members 11.
Are formed so as to be hard to come off after being inserted into the insertion recesses 13 at both end surfaces. The insertion portion 12 of the input terminal 1 is inserted into the insertion recess 13 on one end surface of the connecting resin member.
By inserting the insertion portions 12 of the output terminals 4 into the insertion recesses 13 on the other end surface, the input terminals 1 and the output terminals 4 are connected in an insulated state. Then, the common mode choke coil 3 is connected as in the first embodiment,
Resin molding is performed together with the ground terminal 2 to create an AC inlet filter connector.

FIG. 5 shows a third embodiment of the present invention, in which an AC power input terminal 1 and an AC power output terminal 4 are connected and integrated, and a pair of the integrated input terminal 1 and output terminal 4 is provided at a required interval. The holding resin member 14 is used. This connecting resin member
Reference numeral 14 denotes a pair of rectangular parallelepiped terminal connecting portions 15 and a horizontal connecting portion 16 for connecting them. For example, a pair of mutually separated input terminals 1 and output terminals 4 are integrated with resin in a state where they are arranged in parallel at predetermined intervals. Create by molding. Alternatively, only the connection resin member 14 having the insertion concave portion may be resin-molded in advance, and the input terminal 1 and the output terminal 4 may be inserted later in the same manner as in the second embodiment. In any case, after the pair of input terminals 1 and output terminals 4 are integrated by the connecting resin member 14, the common mode choke coil 3 is connected and resin-molded together with the ground terminal 2 as in the first embodiment. To create an AC inlet filter connector.

(Effects of the Invention) As described above, the AC inlet filter connector of the present invention connects each of a pair of input terminals to an output terminal via a rectangular parallelepiped connecting resin member to prevent the output terminal from moving, and Is molded integrally with the ground terminal and common mode choke coil with resin.
The structure can be simplified as compared with the case where an insulating case for accommodating the common mode choke coil is separately provided, the positional relationship between the input terminal and the output terminal is stabilized, and the workability is improved. The terminal can be prevented from moving due to the impact, and the occurrence of defects can be eliminated to improve the yield. Further, since there is no waste in the terminal material, the material cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of an AC inlet filter connector according to the present invention, FIG. 2 is a circuit diagram thereof, FIG. 3 is an exploded perspective view of the same main part, and FIG. FIG. 5 is a perspective view showing a main part configuration of an embodiment, FIG. 5 is a perspective view showing a main part configuration of a third embodiment of the present invention, and FIG. 6 illustrates a conventional resin sealing structure of a common mode choke coil. FIG. 7 is a perspective view before the resin sealing, FIG. 7 is a perspective view after the resin sealing, FIG. 8 is an exploded perspective view for explaining a conventional example of the AC inlet filter connector, and FIG. 9 is an AC inlet filter connector. FIG. 10 is an exploded perspective view for explaining another conventional example. 1 ... AC power input terminal, 2 ... ground terminal, 3 ... common mode choke coil, 4 ... AC power output terminal, 5 ...
… Winding, 6,11,14 …… connecting resin member, 7A, 7B, 7C …… hole
8 resin molding, 9 recess, 10 mounting collar,
12 ... insertion part, 13 ... recess for insertion.

Claims (1)

(57) [Scope of request for utility model registration] 1. A common mode choke having a pair of input terminals and a ground terminal whose tips project from a front recess of an insulating case, a pair of windings disposed behind the front recess, and a back surface of the insulating case. An AC inlet filter connector having a pair of output terminals drawn out to the side, wherein a rectangular parallelepiped connection resin member covers only the connection side ends of the input terminal and the output terminal, and separates the input terminal and the output terminal. One end of each winding of the common mode choke coil arranged outside the connecting resin member is connected to each input terminal, and the other end is connected to each output terminal, and the input terminal, the output terminal, AC, wherein the insulating case is constituted by a resin molded body in which a ground terminal and a common mode choke coil are integrally molded with resin.
Inlet filter connector.