JPH06325943A - Coil transformer - Google Patents

Abstract

PURPOSE:To ensure the secure fixing of a toroidal core to a box-shaped mold terminal board and to facilitate its automatic mounting onto a substrate by housing the wire wound toroidal core in a box-shape mold terminal box comprising the box shape mold terminal board and an upper cover plate set up thereon. CONSTITUTION:A box-shaped mold terminal box 12 comprises a box-shaped mold terminal board 14 and its upper cover plate 15. By mounting a wire wound toroidal core 13 on the box-shaped mold terminal board 14 and covering this toroidal core 13 with the upper cover plate 15, the toroidal core 13 is housed in the box-shaped mold box 12. Also, a notch groove 17 through which to pull out the wire on the toroidal core 13 is provided on both sides of the upper cover plate 15 intersecting an opening 16 orthogonally. On the other hand, on both sides of the box-shaped mold terminal 14 which intersects the opening 16 orthogonally, a plurality of packaging terminals 18 for terminal processing of the wire on the toroidal core 13 which has been pulled out of the notch groove 17 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil transformer used in various communication equipments and electronic equipments.

[0002]

2. Description of the Related Art Generally, a coil transformer used in communication equipment or electronic equipment is arranged and mounted as an electronic component on a substrate. Therefore, in order to facilitate mounting on a board, this type of coil transformer is mounted on a molded terminal board that has both terminal treatment and mounting beforehand after winding the toroidal core. ing. That is,
The winding of the toroidal coil is connected to the mounting terminals and preassembled as an electronic component so that it can be easily mounted on the board.

In this case, since there is a mounting work on the substrate, in order to withstand mechanical vibration during the work,
It is necessary to securely fix the wound toroidal core to the molded terminal plate. As measures against this, for example, as disclosed in Japanese Patent Laid-Open No. 3-64007,
In some cases, a holder is provided for mounting and mounting the air-core winding coil on the substrate. This is provided with a holder having an inverted U-shape and a plate shape or a trapezoidal block shape, and is intended to position, hold, fix, electrically adjust, or improve the characteristics of the air-core winding coil.

On the other hand, the mounting work on the substrate is not suitable for vacuum suction by the automatic mounting apparatus because the upper surface of the toroidal core having the windings is uneven, and is mainly performed manually. Therefore, in order to enable automatic mounting by an automatic mounting device, there is a type in which resin is filled in the uneven portion on the upper surface of the toroidal core so that vacuum suction can be performed, and that portion is planarized to enable automatic mounting. . In addition, actual Kaihei 3
As disclosed in Japanese Laid-Open Patent Publication No. -30461, there is one in which a suction plate that can be sucked by an automatic mounting device is provided on a circuit board on which electronic components are mounted.

[0005]

However, in order to ensure that the toroidal core having the winding is fixed to the mold terminal plate, it is held on the substrate as disclosed in Japanese Patent Laid-Open No. 3-64007. Providing the tool integrally requires a lot of man-hours for manufacturing the substrate because the holder is provided at a partial position of the substrate.

On the other hand, in order to enable the automatic mounting by the automatic mounting apparatus, the resin is fixed in order to fill the uneven portion of the upper surface of the toroidal core with the resin so that the suction can be performed by vacuum and to make the portion flat. Therefore, it takes time and there is a problem in workability. Further, as disclosed in Japanese Utility Model Laid-Open No. 303041/1990, a circuit board on which electronic components are mounted is provided with a suction plate that can be sucked by an automatic mounting device. Since the suction plate is partially provided in the empty space on the circuit board after the components are mounted, it takes a lot of time to attach the suction plate.

An object of the present invention is to ensure that a toroidal core having a winding is fixed to a box-shaped molded terminal board, and can be easily automatically mounted on a substrate by an automatic mounting device. To get a coil transformer.

[0008]

In the coil transformer of the present invention, a toroidal core having a winding is housed, and a plurality of mounting terminals for terminating the winding wound around the toroidal core are implanted. And a box-shaped molded terminal plate body, and an upper cover plate that is provided on the top of the box-shaped molded terminal plate body and has a flat upper surface and covers the toroidal core.

[0009]

Therefore, in the present invention, the wound toroidal core is housed in the box-shaped molded terminal box formed by the box-shaped molded terminal board and the upper cover plate provided on the box-shaped molded terminal board. The toroidal core can be securely fixed to the box-shaped molded terminal board. Further, since the upper surface of the upper cover plate is formed to be flat, it is possible to easily perform automatic mounting on the substrate by the automatic mounting device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a coil transformer showing an embodiment of the present invention.

A coil transformer 11 of the present invention comprises a box-shaped molded terminal box 12 in which a wound toroidal core 13 is housed and fixed. That is, the box-shaped molded terminal box 12
Consists of a box-shaped molded terminal plate 14 and its upper cover plate 15, and the toroidal core 13 with the winding is mounted on the box-shaped molded terminal plate 14. By covering the toroidal core 13 with the upper cover plate 15, The toroidal core 13 is housed in the box-shaped molded terminal box 12.

The upper cover plate 15 is a box-shaped molded terminal plate 1.
4 is integrally formed with the box-shaped molded terminal plate 14 from one side surface, and is provided so as to form the opening 16 together with the box-shaped molded terminal board 14 on one side surface in the opposite direction. That is, the box-shaped molded terminal board 14 and the upper cover plate 15 thereof have an opening 16 on one side surface of the box-shaped molded terminal box 12.
Will be formed. The opening 16 is for inserting the toroidal core 13.

Further, on both side surfaces of the upper cover plate 15 which are orthogonal to the opening 16, cutout grooves 17 for drawing out the winding wire applied to the toroidal core 13 are provided. The cutout groove 17 is for drawing out the winding wire formed on the toroidal core 13, and the end of the winding wire formed on the toroidal core 13 is drawn out from the cutout groove 17.

On the other hand, on both side surfaces of the box-shaped molded terminal plate 14 orthogonal to the opening 16, a plurality of mountings for terminal treatment of windings applied to the toroidal core 13 drawn out from the cutout groove 17 are mounted. A terminal 18 is provided. The mounting terminal 18 is embedded in the terminal portion 19. That is, the winding applied to the toroidal core 13 drawn out from the cutout groove 17 is connected to each of the plurality of mounting terminals 18 planted in the terminal portion 19, and is connected to the connection conductor on the board from here. Will be.

Further, the upper surface of the upper cover plate 15 is formed into a flat surface so that vacuum suction can be performed by an automatic mounting device. As a result, centering becomes possible during the automatic mounting work by the automatic mounting device, and the coil transformer 11
Can be automatically installed. As a result, the number of steps for assembling the coil transformer 11 on the substrate can be significantly reduced.

FIG. 2 is a perspective view showing a state before the toroidal core 13 is housed in the box-shaped molded terminal box 12. In this embodiment, the box-shaped molded terminal plate 14 and its upper cover plate 15 are integrated. To form a box-shaped molded terminal box 12. Then, the toroidal core 13 is wound from the opening 16 of the box-shaped molded terminal box 12.
Is inserted, the end of the winding wire applied to the toroidal core 13 is pulled out from the notch groove 17, and the mounting terminal 18 of the terminal portion 19
I am trying to connect to.

Accordingly, the winding of the trochodal core 13 is securely fixed, and the upper surface of the upper cover plate 15 is formed in a flat surface, so that the vacuum suction can be easily performed by the automatic mounting device.

[0018]

As described above, according to the present invention, there is provided a box-shaped molded terminal box in which the wound toroidal core is formed by the box-shaped molded terminal plate and the upper cover plate provided on the box-shaped molded terminal plate. Since it is stored, the toroidal core can be securely fixed to the box-shaped molded terminal board. Also,
Since the upper surface of the upper cover plate is formed to be a flat surface, the coil / transformer can be automatically mounted by vacuum suction, and the automatic mounting device can easily perform the automatic mounting. This makes it possible to obtain a coil transformer that facilitates assembly workability, improves productivity, and reduces costs.

[Brief description of drawings]

FIG. 1 is a perspective view showing a coil transformer according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing an assembled state of the coil transformer according to the embodiment of the present invention.

[Explanation of symbols]

 11 coil / transformer 12 box type molded terminal box 13 toroidal core 14 box type molded terminal plate 15 upper cover plate 16, 19 terminal part 17 notched groove 18 mounting terminal

Claims (3)

[Claims] 1. A box-shaped molded terminal board on which a toroidal core having windings is mounted, and a plurality of mounting terminals for terminating the windings provided on the toroidal core are planted, and the box. And a top cover plate for covering the toroidal core, the coil transformer being provided on the top of the molded terminal plate and having a flat upper surface. 2. A box-shaped molded terminal plate on which a toroidal core having windings is mounted, and an upper part of the box-shaped molded terminal plate, which has a flat upper surface and covers the toroidal core. A cover plate; and a terminal portion provided on both side surfaces of the box-shaped molded terminal plate and provided with a plurality of mounting terminals for terminally treating the winding wire applied to the toroidal core. And coil transformer. 3. A wound toroidal core, a box-shaped mold terminal plate for mounting the toroidal core, a box-shaped molded terminal plate provided on an upper portion of the box-shaped molded terminal plate, and having a flat upper surface. An upper cover plate for covering the toroidal core, an opening provided on one side surface of the box-shaped molded terminal plate for inserting the toroidal core, and provided on both side surfaces of the upper cover plate orthogonal to the opening. A notch groove for pulling out the winding wire provided in the toroidal core, and the toroidal core provided on both side surfaces of the box-shaped mold terminal plate orthogonal to the opening and drawn out from the notch groove. And a terminal portion in which a plurality of mounting terminals for terminal treatment of the wound winding are implanted.