JPH0869927A - Transformer - Google Patents

Abstract

PURPOSE: To reduce the cost of a transformer by making the transformer easily assembled and easily fitted. CONSTITUTION: After frame bodies 2 composed of an electrical insulator are put on a cut core 3 together with a coil 1 while the frame bodies 2 are respectively brought into contact with both ends of the coil 1 so that the frame bodies 2 can hold the core 3, the core 3 is tied to the frame bodies 2 in one body with a metallic band 4. An appropriate number of pins 51 made of conductor are planted in one face of each of the frame bodies 2 as connecting terminals 5 and the lead wires of the coil 1 are soldered to the pins 51. Then a metallic cover 6 having openings for protruding the pins 51 is put on both frame bodies 2 so as to cover the frame bodies 2 and part of the coil 1 and bendable fitting clicks 61 composed of tongue pieces are protruded from appropriate spots of the cover 6 facing the openings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer for incorporation in electronic equipment and the like.

[0002]

2. Description of the Related Art In this type of transformer, usually, a cut core is fitted to a coil and tightly integrated with a metal belt, and then a leg and a terminal plate are attached to the cut core and arranged on the terminal plate. The lead wire of the coil is electrically connected to some of the connection terminals, and the outside is covered with a required cover to be fixed to the leg body. There is.

[0003]

However, with such a configuration, it takes time and effort to assemble and attach it, resulting in high cost. The present invention is to solve such a conventional problem.

[0004]

In order to achieve the above-mentioned object, the invention according to claim 1 is arranged such that the frame bodies 2 are brought into contact with both ends of the coil 1 so as to be fitted and held by the cut core 3 together with the coil 1, respectively. The body 2 is provided with an appropriate number of connecting terminals 5 on one surface of the outer periphery common to both, and the lead wire 11 of the coil 1 is electrically connected to each connecting terminal 5, and the coil 1 or both frame bodies. 2, a cover 6 having a mounting claw 61 protruding in place.
Is fitted and fixed. Further, according to the invention of claim 2, a frame body 2 made of an electrically insulating material is brought into contact with both ends of the coil 1 so as to be fitted and held together with the cut core 3 together with the coil 1, and the cut core 3 is provided with a metal band. 4 are tightly connected to each other to integrate them, and in each of the frame bodies 2, a pin 51 made of an appropriate number of conductive material, which is a connection terminal 5, is planted on one surface of the outer periphery common to both, and each pin 51 is attached to each frame 51. The lead wire 11 of the coil 1 is soldered, and a metal cover 6 having an open surface from which the pins 51 project is attached to the coil 1 or both frame bodies 2, and the cover 6 is attached. Is fixed to both the frame bodies 2, and the cover 6 is provided with a tongue piece at a proper position facing the open surface thereof, which is a foldable attachment claw.
Characterized by protruding 61.

[0005]

With the above construction, the present invention facilitates assembly and installation as a whole and achieves the intended purpose.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the transformer of the present invention. In the figure, 1 is a coil, 2 is a frame body placed in contact with both ends of the coil, 3 is a cut core fitted and held by the frame body and the coil, and 4 is a tight binding of the cut core. The metal band 5 is a connecting terminal provided on one surface of the outer periphery of each frame body, and 6 is a cover fitted to the coil or both frame bodies. ing. The coil 1 has two bobbins fitted in the cut core 3 arranged in parallel and wound with a primary winding, a secondary winding, and the like.
It is integrated. The frame body 2 is made of an electrically insulating material such as synthetic resin as appropriate, and has an outer periphery formed into a substantially rectangular shape which is equal to or slightly larger than the outer periphery of the coil 1, and a pair of window holes 21 through which the cut core 3 penetrates are formed in an intermediate portion. In addition, one side of the long side is thickened for the connection terminal, and the cover fitting groove 23 is formed at the inner end of the thickened portion 22. The cut core 3 is formed by bisecting a flat, square-shaped core at the center into a pair of left and right symmetrical U-shaped cores 31, and abutting them. Metal band 4
Is placed on the outer periphery of the cut core 3 and is passed through the coil 1 and the window hole 21 of the frame 2 together with the cut core 3 to tightly bond the cut core 3. By this tight binding, the cut core 3 and the coil 1
The frame 2 is also integrated at the same time. The connection terminal 5 is formed by implanting a suitable number of pins 51 made of a conductive material in the thick portion 22 of the frame body 2, and the lead wire 11 of the coil 1 is soldered to each pin 51. The cover 6 is formed by bending a metal plate to have a U-shaped cross-section that is open at the surface from which the pins 51 project and both side surfaces corresponding to the frame body 2. It is attached to the body 2, and the ends are fitted around both the frame bodies 2 and are engaged with the cover fitting groove 23, and a proper number of the folded pieces 62 are projected from the proper positions of both end edges. The claws 61 are attached to the two frame bodies 2 so as to be fixed to them, and an appropriate number of attachment claws 61 are provided from a suitable position of the intermediate open edge by a foldable tongue piece. As shown in FIG. 3, the above structure is attached to a plate body 7 such as a printed wiring board in use. At that time, each claw 61 is inserted into a slit 71 formed in a key portion of the plate body 7.
It suffices that the plate body 7 is held by penetrating and bending. In addition, each pin 51 is inserted into a through hole formed in the plate body 7 and electrically connected to a predetermined electric wiring.
The claw 61 may be a reverse hook or the like. In the case of a reverse hook, the plate body 7 is used.
It may be inserted into the slit 71 and engaged with the edge portion of the slit 71.

[0007]

According to the inventions of claim 1 and claim 2,
A frame body 2 provided with connection terminals 5 electrically connected to the coil 1 is brought into contact with both ends of the coil 1, and these are cut core 3
The coil 6 and the frame 2 with the connecting terminal 5 are fitted and held by the coil 1 and the cover 6 having the mounting claws 61 projecting from the coil 2 and the two frame bodies 2. It suffices that the body 2 and the cover 6 are fitted and integrated to electrically connect the coil 1 and the connection terminal 5, and the legs and screws are unnecessary, and the number of members and the number of assembling steps can be simplified. ,
It is extremely easy to assemble and costs can be reduced. Moreover, it can be made thin, simple, and beautiful in appearance, which has never been seen before. In addition, it is very convenient and convenient to install because the claws 61 of the cover 6 do not require screws and can be installed very easily.

Further, according to the second aspect of the present invention, since the frame body 2 is formed of an electrically insulating material, it not only causes no inconvenience such as electrical loss but also serves as a base for the connection terminal 5. The pins 51 serving as the connection terminals 5 can be easily planted, and moreover, the metal cover 6 attached to the coil 1 or both frame bodies 2 is fitted and fixed to both frame bodies 2 so that they can be held stably. You can In addition, since the cover 6 is made of metal, electrostatic shielding can be formed, noise can be appropriately reduced, and the surface from which each pin 51 projects is opened to the metal cover 6, so that electrical It is also possible to improve electrical performance without generating a short circuit. In addition, since the cover 6 is provided with a foldable attachment claw 61 formed of a tongue piece at a proper position facing the open surface, the plate body 7 to be attached can be easily attached by bending. Can be fixed.

[Brief description of drawings]

FIG. 1 is an upper perspective view showing an embodiment of a transformer of the present invention.

FIG. 2 is a bottom perspective view of the same example.

FIG. 3 is a central longitudinal side view in a use state.

FIG. 4 is a front view of the main part of the same example.

FIG. 5 is a side view of a main part of the same example.

[Explanation of symbols]

 1 ... Coil 11 ... Lead wire 2 ... Frame 21 ... Window 22 ... Thick portion 23 ... Cover fitting groove 3 ... Cut core 31 ... U-shaped core 4 ... Metal band 5 ... Connection terminal 51 ... Pin 6 ... Cover 61 … Claw 62… Folded piece 7… Plate 71… Slit

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[Procedure amendment]

[Submission date] November 30, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 6

[Correction method] Added

[Correction content]

FIG. 6 is a cutaway exploded perspective view of the upper side of the same example.

Claims (2)

[Claims] 1. A frame body (2) is brought into contact with both ends of a coil (1) to be fitted and held together with a coil (1) in a cut core (3),
Each frame body 2 is provided with an appropriate number of connection terminals 5 on one surface of the outer periphery common to both, and each lead wire of the coil 1 is connected to each connection terminal 5.
11 are electrically connected, and the coil 1 to both frame bodies 2
The transformer is characterized in that a cover 6 having a mounting claw 61 protruding therefrom is fitted and fixed in place. 2. A frame body 2 made of an electrically insulating material is brought into contact with both ends of the coil 1 so as to fit and hold the cut core 3 together with the coil 1, and the cut core 3 is tightly bound with a metal band 4. And the whole of them are integrated into one body.
Pins 51 made of a suitable number of barrels are planted and the lead wires 11 of the coil 1 are soldered to each pin 51.
A cover 6 made of metal having an open surface from which the pins 51 project is attached to the both frame bodies 2 to fit and fix the cover 6 on the both frame bodies 2, and the cover 6 The transformer is characterized in that a foldable attachment claw 61 made of a tongue is provided in a suitable position facing the open surface of the transformer.