JPS6022588Y2 - transformer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transformer, and more particularly to a transformer that has a bind structure and is secured by bringing a bind tape breakage prevention member into contact with the corner of the transformer core and tightening the bind tape.

Generally, a transformer core with a bind structure has a semi-cured glass tape wrapped around the core as a bind tape.

However, there was a risk that the binding tape would break due to the corners of the iron core, so the tightening tension had to be lowered.

Therefore, an object of the present invention is to provide a transformer having a structure that prevents the binding tape from breaking and sufficiently increases the tightening tension.

In order to achieve the above object, the transformer of the present invention is constructed by attaching a triangular base material to a flat plate having binding tape grooves and having an outer peripheral surface similar to the envelope line connecting the corners of a laminated core. The base material of the bind tape breakage prevention member is brought into contact with the corner of the laminated core, the bind tape is passed through each bind tape groove of the bind tape breakage prevention member, and the laminated core is tightened and fixed, and the laminated core is housed in an insulating cylinder. , the coil is arranged at a predetermined position on the outer peripheral surface of the insulating cylinder.

Next, the illustrated embodiment will be described.

1 to 3 show examples of different configurations of the bind tape breakage prevention member applied to the present invention.

First, the bind tape breakage prevention members 4 shown in FIGS. 1a and 1b are triangular base materials 1, two of which are symmetrically arranged so as to be in contact with both sides of the corners of the core, as shown in FIG. 1
and a flat plate 3 having a bind tape groove 2 into which a glass bind tape is inserted.

This symmetrical bind tape breakage prevention member 4 is mainly used to protect a portion where the core cross section is equilateral.

The structure of the bind tape breakage prevention member 4 shown in FIG. 2 is almost the same as that in FIGS. The curvature is approximately the same as the outer circumference of the core, making it possible to apply it to narrower locations on the stepped portion of the core.

The flat plate 3 of the bind tape breakage prevention member 4 shown in FIGS. 1 and 2 above is formed of an insulating plate having appropriate elasticity, such as a press board or a resin laminate. It is said to fit well.

FIG. 4 shows how the symmetrical bind tape breakage prevention member 4 shown in FIG. 1 is used.

That is, a triangular base material 1.1 is attached to the corner of the iron core 5 from both sides.
are brought into contact with each other, and the bind tape 6 is passed through each bind tape groove 2 of the bind tape breakage preventing member 4 to tighten and fix the iron core 5, and the core 5 is housed in the insulating cylinder 7.

By the way, there are many places where the corners of a general iron core are not equal, and such places are shown in Figure 3a above.

The bind tape breakage prevention member 8 shown in b is preferably used.

That is, the bind tape breakage prevention member 8 shown in FIGS. 3a and 3b has a triangular base material 9 attached to only one side of a flat plate 3 having a groove 2 into which the glass bind tape 6 is inserted.

Note that, compared to the structure shown in FIG. 3a, the structure shown in FIG. 3 is characterized by a structure in which the portion to which the triangular base material 9 is attached has a curvature of the same degree as the outer periphery of the iron core.

5a and 5b show the state in which the bind tape breakage prevention member 8 of FIGS. 3a and 3b is assembled into the iron core 5.

The triangular base material 9 is in contact only with the upper corner of the iron core 5 and is also housed within the insulating tube 7.

Next, in FIGS. 6 and 7, the triangular base material 1 or 9 of the bind tape breakage prevention members 4 and 8 is brought into contact with the corner of the laminated core 5, and the bind tape groove 2 of the flat plate 3 is A state of use is shown in which the laminated iron core is wound through a bind tape 6, tightened and fixed, and then housed in an insulating tube 7 in which a coil 10 is arranged.

Note that 11 in the figure is a spacer.

The transformer of the present invention has the above-described configuration and has the following effects.

(1) Breakage of the bind tape 6 due to the corners of the transformer core 5 can be prevented by the bind tape breakage prevention material.

(2) Therefore, the tightening pressure of the bind tape 6 can be improved.

(3) The effect of preventing tape breakage can be achieved reliably and sufficiently with the minimum necessary small member installed only at the position where the bind tape is wound, and it is extremely economical.

(4) It is possible to manufacture a highly reliable transformer with high residual clamping pressure, and the workability in manufacturing the transformer core can be improved.

[Brief explanation of drawings]

1A and 1B are a front view and a plan view showing an example of the bind tape breakage preventing member according to the present invention; FIG. 2 is a front view showing another configuration of the bind tape breakage preventing member according to the present invention; 3a and 3b are front views showing other examples of the bind tape breakage prevention member according to the present invention, and FIGS. 4 and 5 respectively.
Figures a and b are enlarged views showing the configuration in which the members shown in Figures 1 to 3 are assembled into the iron core, Figure 6 is a front view showing an embodiment of the transformer according to the present invention, and Figure 7 is a diagram of the present invention. FIG. 2 is a partially cutaway plan view of the transformer according to the invention.

Claims (1)

[Scope of utility model registration request] A bind tape breakage prevention member is constructed by attaching a triangular base material to one side of a flat plate having bind tape grooves and an outer peripheral surface similar to the envelope line connecting the corners of a laminated iron core.
One surface of the base material is brought into contact with a corner of the laminated core, and a bind tape is passed through each bind tape groove of the bind tape breakage prevention member, and the laminated core is tightened and fixed and housed in an insulating tube. , A transformer characterized in that a coil is arranged at a predetermined position on the outer peripheral surface of the insulating cylinder.