JPH02235313A - Toroidal winding - Google Patents

Abstract

PURPOSE:To improve the winding efficiency while facilitating the automation of the winding process by a method wherein specified length of a flat type conductor is previously wound up to form a vortical coil and then winding process is performed in close contact with a toroidal core. CONSTITUTION:A flat type conductor 1 such as a flat type copper wire coated with an insulating film in thickness thinner than the width is tightly wound up into necessary toroidal winding in vortical shape and then the interlayer parts are slightly bonded to one another to form a vortical coil 2. Next, the outer peripheral surface 4 of the winding terminal of the vortical coil 2 and the outer peripheral surface 5 of the toroidal core 3 are fixed so as to come into contact with each other and then the vortical coil 2 is rotatively moved in close contact with the surface, inner peripheral surface, rear surface and outer peripheral surface of the toroidal core 3. Furthermore, the toroidal core 3 can be rotated on its central axis to continue the toroidal winding process of the flat type conductor extending over the whole round. Through these procedures, the winding efficiency can be improved while facilitating the automation of the winding process.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a toroidal winding method for winding a conducting wire around a toroidal core such as a noise filter.

Conventional technology The conventional toroidal winding method is to store a required length of conducting wire in advance in a shuttle ring interlinked with a toroidal core hole, fix the end of the winding to the core, and then wind the shuttle ring. While rotating, the toroidal core was wound by applying a winding tensicon due to the frictional force between the shuttle ring and attached parts and the conducting wire.

Problems to be Solved by the Invention In the conventional method described above, after a shuttle ring is passed through the toroidal core hole and installed, the conductor is wound around the shuttle ring to a length necessary for winding around the core, and the end of the winding is cut off. After fixing it to the core, toroidal winding is performed.
Spending more time on incidental work than the actual winding time,
In particular, when the total number of windings is small, from several turns to several tens of turns, very low efficiency can be achieved, and if these are to be automated, expensive and complicated equipment is required.

In addition, when winding a thick wire onto a small toroidal core, the shuttle ring becomes thinner, making it impossible to wind the wire with a large tensilane due to strength issues, making it impossible to wind the wire in close contact with the toroidal core, which causes the wire to draw a round arc. It becomes a winding wire. This not only increases the size of the already wound toroidal coil, but also causes negative effects such as magnetic coupling on surrounding components due to leakage magnetic flux.

The present invention aims to eliminate the above-mentioned conventional drawbacks and provide a toroidal winding method that is easy to automate and has excellent workability.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention creates a spiral coil by winding a thin rectangular conductive wire to a required length in advance, and then connects the winding end of the spiral coil to a toroidal core. The inner circumferential surface of the core is fixed to a part of the toroidal core and then passed through the toroidal core hole. Top surface, outer surface. This method involves winding a rectangular conducting wire around a toroidal core while unwinding a spiral coil by rotating and moving it along the lower surface.

Function As mentioned above, prepare a spiral coil in advance by winding a thin rectangular conductor wire to the required length, fix it to a part of the toroidal core, and coil it closely against the core surface while passing through the core hole. Since the shaped coil is rotated and wound toroidally,
Incidental work other than winding, such as attaching the spiral coil and fixing the winding end to the core, is reduced, improving work efficiency and making automation easier. In addition, when winding a thick wire around a toroidal core, the spiral coil is tightly attached to the core and wound around the toroidal core while being unwound. Therefore, it is possible to wind the wire in close contact with the toroidal core without adding a large tensidine during winding.

For the above reasons, it is possible to produce toroidal windings that are highly efficient, easy to automate, and have good adhesion to the toroidal core.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 6 are perspective views of a spiral coil and explanatory diagrams of a toroidal winding in one embodiment of the present invention.

As shown in Figure 1, a rectangular conducting wire 1, such as a rectangular copper wire with an insulating film thinner than its width, is tightly wound in a spiral shape for the length required for the toroidal winding, and the layers are lightly bonded. Then, a spiral coil 2 is created.

At this time, the outer diameter of the spiral coil 2 needs to be smaller than the inner diameter of the toroidal core 3 around which it is wound.

Next, Figure 2 (&). As shown in FIG. 3(b), the end of the spiral coil 2 is fixed so that the outer circumferential surface 4 is in contact with the outer circumferential surface 6 of the toroidal core, as shown in FIG. 3(1). (b)
As shown in the figure, the spiral core 2 is located on the top surface of the toroidal core. Inner circumference. Bottom surface. The toroidal core 3 is rotated in the direction of the arrow while being in close contact with the outer peripheral surface, and the toroidal core 3 continues to be wound while being rotated in the direction of the arrow (FIG. 4 (IL).(b)) about the core center axis. Figure 6 (IL). (b)
As shown in FIG. 3, toroidal winding of the rectangular conducting wire is possible over the entire circumference of the toroidal core 3. In this case, since the spiral coil 2 is wound around the toroidal core 3 in the opposite direction to the winding direction, a tensile force in the opposite direction to the winding direction is added to the flat conductor in advance, so that it is tightly attached to the toroidal core 3 surface. Winding can be done.

Furthermore, as shown in FIG. 6, the spiral coil 2 is attached to the shuttle ring 6 interlinked with the toroidal core 3, and the winding end portion is fixed to the toroidal core 3, and the shuttle ring 6 is fixed to the toroidal core 3.
By rotating the toroidal wire with the drive motor 6, toroidal winding can be performed without using complicated tension equipment, and a toroidal winding device that is efficient and easy to automate can be realized.

Effects of the Invention In the present invention as described above, a rectangular conductive wire is wound to a required length to create a spiral coil in advance, and the coil is wound closely around the toroidal core, thereby reducing the work incidental to winding and reducing the winding process. Line efficiency increases and automation becomes easier.

In particular, when a thick wire is used, the adhesion between the toroidal core and the rectangular conducting wire is good, which not only makes the toroidal coil smaller, but also reduces the influence of leakage flux on other parts, which is of great industrial value.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a spiral coil wound with rectangular conductive wire according to an embodiment of the present invention, and Fig. 2 (!L). (b)～
Figure 6 (IL). (b) is a top view and a sectional view for explaining the toroidal winding, and FIG. 6 is an explanatory diagram showing the winding method. 1... Flat conductor, 2... Spiral coil, 3... Toroidal core. Name of agent: Patent attorney Shigetaka Awano and one other person?
Whirlpool 4 major Koinore

Claims (1)

[Claims] A spiral coil is created by winding a thin rectangular conducting wire to the required length, and the end of the coil is fixed to a part of the toroidal core, and the inner peripheral surface of the core is passed through the toroidal core hole.
A toroidal winding method in which a rectangular conductor is wound around a toroidal core while unwinding a spiral coil by rotating and moving it along the top, outer peripheral, and bottom surfaces.