JPH05152152A - Electromagnetic device manufacturing method - Google Patents

Abstract

(57) [Abstract] [Purpose] When the lead wire 4a is connected to the terminal piece 11, the terminal piece 11 is prevented from being deformed or coming off from the terminal block portion 5. [Structure] A plurality of terminal pieces 11 are integrally connected at an end portion opposite to an end portion inserted into and fixed to a terminal base portion 5 to form a terminal block body 33. Each terminal piece 11 of the terminal block body 33 is inserted and fixed to the terminal block portion 5. Terminal piece 11 of terminal block body 33
The lead wire 4a of the coil 4 is connected to. Finally, each terminal piece
Separate 11

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electromagnetic device such as a discharge lamp ballast.

[0002]

2. Description of the Related Art An electromagnetic device such as a discharge lamp ballast has a pair of integrally formed coil bobbins 1 as shown in FIG.
The coil bobbin 1 is provided with a hollow winding barrel portion 2 into which a central leg of an iron core (not shown) is inserted, and flange portions 3 are formed at both ends of the winding barrel portion 2. A coil 4 is wound between both the collar portions 3.

Further, a flange portion 3 on the outer end side of each coil bobbin 1
The terminal block portion 5 is integrally formed on the outer surface of the
A plurality of terminal pieces 11 are inserted and fixed in parallel to the outer end surface of the. The terminal piece 11 is formed by cutting and raising a connecting piece portion 12 in a direction opposite to the terminal block portion 5 side, and the lead wire 4a of the coil 4 is wound around and connected to the connecting piece portion 12. ..

According to the conventional manufacturing method, first,
Each of the terminal pieces 11 separated and formed one by one is inserted and fixed in the terminal block portion 5, respectively, and then, in the winding step, the lead wire 4a of the coil 4 is wound and connected to the connection piece portion 12 of the terminal piece 11. I have to.

In this winding process, an automatic winding machine is introduced. In this automatic winding machine, after the lead wire 4a is wound around the connecting piece 12 of the terminal piece 11, the lead wire 4a is attached to the lead wire 4a. The lead wire 4a is cut by suddenly applying tension and applying the lead wire 4a to a right-angled corner of the edge of the connecting piece portion 12.

[0006]

[Problems to be Solved by the Invention] The terminal block 5
In order to secure the insulation distance between the terminal pieces 11 because a plurality of terminal pieces 11 are fixed to the terminal piece 11, the lateral width of the terminal piece 11 cannot be widened so that the terminal piece 11 is easily deformed and the terminal block The adhesion strength to 5 is weak.

Therefore, in the conventional winding process, the terminal piece is
When the lead wire 4a wound around the connecting piece portion 12 of 11 is cut, a strong force is applied via the lead wire 4a, so that the terminal piece 11 is deformed, or the terminal piece 11 is detached from the terminal block portion 5 or the like. Occurs.

The present invention has been made in view of the above circumstances, and when the lead wire of the coil is connected to the terminal piece in the winding step, the terminal piece may be deformed or dropped from the terminal block portion. It is an object of the present invention to provide a method of manufacturing an electromagnetic device that can be prevented.

[0009]

SUMMARY OF THE INVENTION The present invention is an electromagnetic device in which an iron core is inserted into a coil bobbin around which a coil is wound, and a plurality of terminal pieces are fixed to a terminal block portion provided on the flange portion of the coil bobbin. Along with connecting the lead wire of the coil to this terminal piece, the end portions opposite to the end portions fixed to the terminal block portion by arranging the plurality of terminal pieces in the fixing interval to the terminal block portion are provided. After forming the terminal block body integrally connected by the connecting portion, fixing each terminal piece of the terminal block body to the terminal base portion and connecting the lead wire of the coil to the terminal piece, the connection of the terminal block body The part is cut off to separate each terminal piece.

[0010]

According to the present invention, in a state where each terminal piece of the terminal block body is fixed to the terminal block portion, one end of each terminal piece is fixed to the terminal block portion and the other end is integrally connected and supported with another terminal piece. It Therefore, in the winding step, the terminal piece to which the lead wire of the coil is connected is prevented from being deformed and is prevented from coming off from the terminal block portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to FIGS.

The same structures as those shown in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 4, a pair of integrally formed coil bobbins 1 has a coil 4 between both flanges 3 on the outer circumference of a winding barrel 2.
A terminal block part 5 is integrally formed on the outer surface of the flange part 3 on the outer end side of each coil bobbin 1, and a plurality of terminal pieces 11 are inserted and fixed to the outer surface of the terminal block part 5. The insertion holes 6 are formed in parallel in the horizontal direction.

The terminal piece 11 has a locking piece portion 13 (shown in FIG. 2) at the end portion inserted into the insertion hole 6 of the terminal base portion 5.
Is formed by cutting and raising, and the tip of this locking piece portion 13 bites into and is fixed to the inner wall of the insertion hole 6. Also, the terminal piece 11
The lead wire 4a of the coil 4 and the like are wound around and connected to the connecting piece portion 12 formed by cutting and raising in the substantially central portion.

An iron core 21 is fitted and inserted into the coil bobbin 1, and the iron core 21 is fitted into the winding body portion 2 of the coil bobbin 1 and the central leg portion (not shown) and the coil bobbin 1 are shown.
2 have side leg portions 22 arranged on both sides thereof, and caps 23 for holding the iron core 21 in the stacking direction are fitted to both end portions thereof.

Next, a procedure for manufacturing the electromagnetic device thus constructed will be described.

As shown in FIG. 2, for the terminal piece 11,
The plurality of terminal pieces 11 are continuously arranged in correspondence with the fixing intervals to the terminal base portion 5, and the end portions of the respective terminal pieces 11 opposite to the end portions fixed to the terminal base portion 5 are connected to the connecting portion 31. Are connected together to form the terminal continuum 32. Then, the terminal block bodies 33 having the number of the terminal pieces 11 corresponding to the number of the terminal blocks 5 fixed are separated. In FIG. 2, pilot holes 34 for forming the terminal pieces 11 at equal intervals by an automatic processing machine are shown in the connecting portion 31.

Then, as shown in FIG. 1, each terminal piece 11 of the terminal block body 33 is inserted and fixed in each insertion hole 6 of the terminal block portion 5. At this time, a plurality of terminal pieces 11 can be simultaneously inserted and fixed in one insertion step.

Next, in the winding step, the coil 4 is wound around each coil bobbin 1 by an automatic winding machine. In this automatic winding machine, after the lead wire 4a is wound around the connecting piece portion 12 of the terminal piece 11, a sudden tension is applied to the lead wire 4a and the lead wire 4a is formed into a rectangular shape at the edge of the connecting piece portion 12. The leader line 4a is cut off by applying it to the corner.

At this time, one end of the terminal piece 11 is fixed to the terminal base portion 5 and the other end is integrally connected and supported with the other terminal piece 11, so that the terminal piece 11 to which the lead wire 4a is connected is It can be prevented from being deformed or coming off from the terminal block portion 5.

After the connection of the lead wires 4a and the like to the terminal pieces 11 is completed, the connecting portion 31 of the terminal block body 33 is cut off to separate each terminal piece 11 independently.

Then, by inserting the iron core 21 into the coil bobbin 1, the electromagnetic device shown in FIG. 4 is formed.

[0023]

According to the present invention, a terminal block body is formed by integrally connecting a plurality of terminal pieces at the end opposite to the end fixed to the terminal base, and each terminal of the terminal block is formed. After connecting the lead wire of the coil to the terminal piece and connecting the lead wires of the coil to the terminal piece, separate each terminal piece so that when connecting the lead wire to the terminal piece, one end of the terminal piece Since it is fixed and the other end is integrally connected and supported with the other terminal piece, it is possible to prevent the terminal piece to which the lead wire of the coil is connected from being deformed or dropping from the terminal block portion.

[Brief description of drawings]

FIG. 1 is a perspective view of a coil bobbin showing an embodiment of the present invention.

FIG. 2 is a perspective view of a terminal continuum in which the terminal pieces are continuously formed.

FIG. 3 is a perspective view of a part of the terminal block portion.

FIG. 4 is a perspective view of the electromagnetic device.

FIG. 5 is a perspective view of a coil bobbin of a conventional electromagnetic device.

[Explanation of symbols]

 1 Coil bobbin 3 Collar part 4 Coil 4a Lead wire 5 Terminal block part 11 Terminal piece 21 Iron core 31 Connecting part 33 Terminal block body

Claims (1)

[Claims] 1. An electromagnetic device in which an iron core is inserted into a coil bobbin around which a coil is wound, wherein a plurality of terminal pieces are fixed to a terminal block portion provided on a collar portion of the coil bobbin, and the coil piece is attached to the terminal piece. When connecting the lead wire, the plurality of terminal pieces are arranged at a fixing interval to the terminal base portion and the end portion opposite to the end portion fixed to the terminal base portion is integrally connected by a connecting portion. After forming a block body, and fixing each terminal piece of this terminal block body to the terminal block portion and connecting the lead wire of the coil to the terminal piece,
A method for manufacturing an electromagnetic device, comprising cutting the connecting portion of the terminal block body to separate the terminal pieces.