JPH0128585Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a tape-shaped electric wire with reinforced terminals.

[Prior Art] In FIGS. 1 and 2, 10 is the entire tape-shaped electric wire, 12 is its conductor, and 14 is an insulator.

Reference numeral 16 denotes a reinforcing plate, which is made of a polyester tape or the like that is thicker than the insulator 14 and adhered with hot melt adhesive or the like.

[Problems to be Solved by the Invention] This tape-shaped electric wire 10 is often used by being bent and inserted into a socket 18, as shown in FIG.

On the other hand, the reinforcing plate 16 is square as shown in FIG.

Therefore, when used as described above, stress concentration occurs only near the inner edge 20 of the reinforcing plate 16.

Let me explain this point in a little more detail.

The diagram shown at the bottom of FIG. 2 shows the tape-shaped electric wire 10
The change in the Z direction of the cross-sectional area of the XY cross section (see the arrows in Figure 1 for the XYZ direction) of the composite of the reinforcing plate 16 and the reinforcing plate 16 is calculated from A to an arbitrary range in the vicinity of the inner edge 20. This is what is shown up to C.

The XY cross-sectional area suddenly changes at B of the inner edge 20 and reaches the maximum value Smax, and this maximum value Smax continues from B to C on the outside in the Z direction.

Note that the outer side refers to the side farthest from the center when viewed in the Z direction (in FIG. 1, the exposed end of the conductor 12 is the outermost side).

Moreover, the inside refers to the side closer to the center when viewed in the Z direction.

It is well known that stress concentration occurs where the cross-sectional area changes suddenly.

If stress concentration occurs only near the inner edge 20,
The reinforcing plate 16 becomes easy to peel off.

[Means for solving the problem] In this invention, the above-mentioned XY cross-sectional area viewed in the Z direction is (1) as shown in FIGS. 4 and 5, (2) or, as shown in FIG. 6, the maximum value at the innermost position B of the reinforcing plate 16. The above problem is solved by creating a structure in which Smax changes to become smaller than the maximum value Smax near the outside.

[First Example] (Figure 4) FIG. 4 corresponds to the right half of FIG.

The line of the inner edge 22 is arcuate.

XY of the composite of the tape-shaped electric wire 10 and the reinforcing plate 16
The cross-sectional area of the cross section is B, as shown at the bottom of the same figure.
(Innermost position of reinforcing plate 16 in Z direction)
Since only the tape-shaped electric wire 10 is used in , the maximum value Smax is much smaller than the maximum value Smax, and it does not reach the maximum value Smax until reaching D, and gradually changes from B to D in between.

Therefore, stress concentration does not occur only in B, and stress concentration in B is alleviated.

[Second Example] (Figure 5) The inner edge 24 is corrugated.

Therefore, the cross-sectional area of the XY section is also in this case,
Since there is only the tape-shaped electric wire 10 in B,
It is much smaller than the maximum value Smax, reaches the maximum value Smax only when reaching E, and gradually changes between then, and the stress concentration at B is relaxed.

Note that in this case, the locations of stress concentration are also dispersed in the X direction.

[Third Embodiment] (FIG. 6) The line of the inner edge 26 of the reinforcing plate 16 is straight and coincides with the X direction. However, a large number of small holes 28 are provided near the outside.

The cross-sectional area of the composite of the tape-shaped electric wire 10 and the reinforcing plate 16 suddenly changes at B and reaches the maximum value Smax, but at B
The maximum value of F and G near the outside (viewed in the Z direction)
A portion smaller than Smax is created.

Therefore, stress concentration will not occur only in B.

[Effect of the invention] The above-mentioned XY cross-sectional area as seen in the Z direction is (1) as shown in Figs. 4 and 5, the minimum at the innermost position B of the reinforcing plate 16, and (2) Or, as shown in Fig. 6, the maximum value Smax is reached at the innermost position B of the reinforcing plate 16, but near the outside thereof. Since the structure is such that the stress changes to be smaller than the maximum value Smax, it is possible to avoid stress concentration occurring only in the cross section passing through the inner edge of the reinforcing plate 16, as described above.

Therefore, the reinforcing plate 16 becomes difficult to peel off.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional tape-shaped electric wire with a reinforcing plate, Fig. 2 is an explanatory diagram showing the bottom view and changes in the cross-sectional area of the XY cross section, Fig. 3 is an explanatory diagram of its usage state, and Fig. 4 Figures 5 and 6 are bottom views (corresponding to the right half of Figure 2) of the main parts of different embodiments of the present invention, as well as explanations showing changes in the cross-sectional area of the XY cross section, respectively. figure. 10: tape-shaped electric wire, 12: conductor, 14: insulator, 16: reinforcing plate, 20, 22, 24, 26: inner edge, 28: small hole.

Claims (1)

[Claims for Utility Model Registration] Tape-shaped electric wire 10 with reinforcing plate 16 adhered to the terminal
When the maximum value of the XY cross-sectional area of the composite of the tape-shaped electric wire 10 and the reinforcing plate 16 is Smax; the XY cross-sectional area viewed in the Z direction changes as follows; , is minimum at the innermost B of the reinforcing plate 16 and gradually increases toward the outside to reach the maximum value Smax; or is it the maximum value Smax at the innermost B of the reinforcing plate 16? , a tape-shaped electric wire characterized in that the value changes to be smaller than the maximum value Smax near the outer side of the innermost side B of the reinforcing plate 16.