JP2571697B2 - Trans coil and method for forming the coil - Google Patents

Description

The present invention relates to a transformer having a plurality of coils having different wire diameters and a method for forming a coil of the transformer.

FIG. 6 is an electric circuit showing a known transformer having a primary coil P, a secondary coil S, and a tertiary coil T.

This type of transformer has a step-up structure and a step-down structure. In each case, an input voltage is applied from terminals P ₁ and P _{2 of the} primary coil P, and terminals S ₁ and S 2 of the secondary coil S are applied. It adapted to obtain a S ₂ and the terminal T _1, the output voltage from the T ₂ of the tertiary coil T.

The transformer of the step-up structure has a larger number of windings of the secondary coil S and the tertiary coil T than the primary coil P and has a narrower linearity, and the transformer of the step-down structure has a smaller winding and wire diameter. The opposite is true.

"Problems to be Solved by the Invention" Today, the coil of the transformer as described above is wound by an automatic winding machine. Since winding cannot be performed, when winding coils having different wire diameters, winding is performed by another winding machine.

For example, in the above transformer, the wire diameters of the primary, secondary, and tertiary coils are all different, and these are φ ₁ , φ ₂ , φ ₃
If the wire diameter of the wire φ ₁
Is wound by the primary winding P, and the conductor φ
And winding ₂ the secondary coil S, so that the windings of the tertiary coil T conductors phi ₃ by the third winding machine as well.

For this reason, the number of winding machines increases, and not only does the equipment cost a great deal of money, but also when winding a plurality of coils having different wire diameters, the winding member is changed every time the coil is wound. It will be transferred to another winding machine, and the winding efficiency will be extremely low.

"Means for Solving the Problems" The present invention has been developed for the purpose of solving the above problems. As a first invention, in a transformer having a plurality of coils having different wire diameters, at least two Among the coils, a coil having the smallest wire diameter is formed by a reference wire having a predetermined wire diameter, and a plurality of the reference wires are bundled to form a coil forming a coil having another wire diameter. Propose a transformer coil.

As a second invention, in a method of forming a transformer coil having a plurality of coils having different wire diameters, after forming at least two coils as a coil having the smallest wire diameter with a reference wire having a predetermined wire diameter, This reference wire is folded back at a predetermined length without cutting, and bundled into a plurality of wires, and the bundle of the plurality of reference wires is wound as a coil having another wire diameter. A transformer coil forming method characterized by cutting is proposed.

"Operation" Since the coil that forms the thinnest coil and the coil that forms the other thicker coil can be formed with the same reference wire diameter, it can be wound by a single winding machine. It becomes possible, and after winding the coil with the smallest wire diameter, without cutting the reference wire, bundling a plurality of these wires and applying the winding that constitutes the thicker coil with the other wire diameter. Continuous winding can be performed using a reference conductor having a predetermined thickness as a plurality of coils having different diameters.

"Example" Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a transformer circuit diagram for explaining the present invention.
It is assumed that the secondary coil S is wound with a reference wire having a predetermined wire diameter φ ₂ (cross-sectional area A ₁ ), and the tertiary coil T has a wire diameter φ ₃ (cross-sectional area A ₂ larger than the secondary coil S). ) Lead,
It is assumed that the primary coil P is wound with a conductor having a wire diameter φ ₁ (cross-sectional area A ₃ ) larger than that of the tertiary coil T. Also, it is assumed that there is a relationship of A ₂ = 3A ₁ and A ₃ = 5A ₁ between the coils. Incidentally, it is _{φ 2 <φ 3 <φ 1} .

In order to wind such a transformer coil, it is wound as shown in FIG.

First, the secondary coil S is formed by a single wire winding with a reference wire having a diameter of phi _2. That is, as shown in FIG. 3, after forming the secondary coil S performs a winding of a predetermined number of times after tying the winding starting end to the terminal S ₁ in bobbin 10, tied the winding end terminal S ₂ You.

Reference conductive wires tied to the terminal S ₂ is without cutting, followed by drawing the predetermined length of the reference wire from the wire reel to form a three multi-line wrapping.

As shown in FIG. 4, such a double track can be easily formed by folding back so as to lock the locking rods 11 and 12 arranged at predetermined intervals. When forming a double track in this way, the winding operation is temporarily stopped.

Three multi-line mentioned above is bridged from the terminal S ₂ to the terminal T _1,
Forming a tertiary coil T performs winding of a predetermined number of times on the bobbin 10 remains double track from tied to terminal T ₁ to start the winding operation, Karageru the winding end thereof to the terminal T _2.

Three double track that tied to terminal T ₂ are the same way to form a reference conductor to five double track without cutting.

Double track of the five formation spans from the terminal T ₂ to the terminal P _1,
The bobbin 10 remains double track from tied to terminal P ₁ to form a primary coil P performs winding of a predetermined number of times, cutting tying the winding end terminal P _2.

After winding as described above, the conductors tied to the terminals are fixed by soldering, and the terminals S _{2 to} T ₁ and T _{2 to} P ₁
Cut the conductor that was bridged between.

Note that the length of the three double wires corresponds to the number of turns of the tertiary coil T,
The length of each of the five double wires is determined according to the number of turns of the primary coil P. This is performed by appropriately adjusting the distance between the locking rods 11 and 12.

Further, these three or five double wires may be simply a bundle, but may be formed as a twisted wire.

In the coil wound as described above, the sectional area of the secondary coil S is A ₁ , the sectional area of the tertiary coil T is A ₂ = 3A ₁ , and the primary coil P
Since the cross-sectional area of the A ₃ = 5A _1, if the number of turns in the same way, a transformer coil equivalent coil shown in Figure 2.

FIG. 5 shows a power supply circuit incorporated in a known flash discharge light emitting device for photographing. The oscillation transformer 13 of such a power supply circuit has a winding end of a secondary coil S and a winding start of a feedback coil F. In many cases, the connection portion a is connected to the base of the oscillation transistor 14. In the case of the oscillation transformer 13, the secondary coil S is wound with a large number of thin wires, the feedback coil F is a thick wire compared to the secondary coil S, and the primary coil P is the largest wire. Wound with a large diameter conductor. Then, the feedback coil F and the primary coil P
Means that the number of turns is extremely smaller than that of the secondary coil S.

Therefore, when winding the coil of the oscillation transformer 13, after tying with winding terminal S ₂ of the secondary coil S the reference conductor having a diameter of phi _2, the cross-sectional feedback coil F in the same manner as described above Form a double track of the reference wire according to the area,
Tied The double track to the terminals F _1, the feedback coil F to Karageru the terminal F ₂ after winding.

The primary coil P is independently wound with a conductor having a predetermined thickness. For the oscillation transformer 13, although soldering the coil ends in the terminals, conductors and bridge between the terminals S ₂ to F ₁ leaves intact without cutting. In FIG. 5,
The circuit 15 shown by the phantom line is a converter, 16 is a diode for rectification, 17 is a main capacitor, 18 is a resistor for starting oscillation,
19 is a capacitor for stabilizing the operation, 20 is a battery power supply, and 21 is a power switch.

As described above, the embodiments of the present invention have been described, but the present invention does not necessarily need to be formed as an odd double track,
Even if any of the coils to be equipped as a transformer is double-tracked, it is sufficiently effective. Further, as in the above embodiment, the coil ends can be fixed to the terminals of the flanges 10a and 10b on both sides without fixing the coil ends only to the terminals of the one flange 10a of the bobbin 10. Can also be wound directly.

[Effects of the Invention] As described above, in the present invention, in a winding of a transformer having a plurality of coils having different wire diameters, a reference wire for winding a coil having a small wire diameter is formed as a double wire, and the wire diameter is defined as the double wire. In order to apply windings that make up a thick coil, coil winding can be performed with the minimum number of winding machines, and it is not necessary to transfer winding members to another winding machine every time the coil wire diameter is different. Transformer coils with extremely high production efficiency are obtained by reducing the number of wire facilities.

In addition, after winding a coil having a small wire diameter with a reference wire, the reference wire is stretched without cutting to form a double wire, and if the double wire is used to form a coil having a large wire diameter, In addition, a plurality of coils having different wire diameters can be continuously wound using the reference conductor, and the coil winding efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a transformer circuit diagram for explaining the present invention, and FIG.
The figure is a development view of a transformer coil showing one embodiment of the present invention,
FIG. 3 is a perspective view of a bobbin showing the passage of a winding, FIG. 4 is a simplified view showing an example of forming a double track, FIG. 5 is a view showing a power supply circuit of a flash discharge light emitting device for photography, and FIG. FIG. 3 is a transformer circuit diagram shown as an example. P ...... primary coil S ...... secondary coil T ...... tertiary coil F ...... feedback coil _{φ 1, φ 2, φ 3} ...... coil wire diameter _{A 1, A 2, A 3} ...... coil cross-sectional area P _1, P ₂ …… Primary coil terminal S ₁ , S ₂ … Secondary coil terminal T ₁ , T ₂ … Tertiary coil terminal

Claims (2)

(57) [Claims] In a transformer having a plurality of coils having different wire diameters, a coil having the smallest diameter among at least two coils is formed of a reference wire having a predetermined wire diameter, and a plurality of the reference wires are bundled. A transformer coil characterized by forming windings constituting a coil having a larger wire diameter. 2. A method of forming a transformer coil having a plurality of coils having different wire diameters, wherein at least two of the coils are formed as a coil having the smallest wire diameter with a reference wire having a predetermined wire diameter, and then the reference wire is formed. The conductive wire is folded back at a predetermined length without being cut and bundled into a plurality of wires, and the reference wire obtained by bundling the plurality of wires is wound as a coil having another wire diameter, and thereafter, the space between the two coils is cut. A method for forming a transformer coil.