JPH08222301A - Flexible feed terminal - Google Patents

Abstract

PURPOSE: To provide a flexible feed terminal which has connection terminals made by bending strip-like copper sheets, of which the bending parts of connection terminals have high fastening force with no springing back, and in which a plain brainded wire is made difficult to fall out of a connection terminal even if tension is applied to the plain braided wire due to alteration of the relative positions of the terminals attributed to vertical movement of the terminals. CONSTITUTION: Connection terminals 14, 14 are outside fitted and fixed in both ends of a plain braided wire 13 and bolt insertion holes 15 are formed. Connection terminals 14, 14 are crimped to the plain brainded wire 13 by bending strip-like copper sheets 14a into a U-shape and horizontally bending rising up pieces 14b, 14b in both sides as to wrap the plain braided wire 13 while the end parts of plain braided wire 3 being inserted between the rising up pieces 14b, 14b and the base parts 14b', 14b' of the rising up pieces 14b, 14b being kept. The tip parts 14b", 14b" of the rising up pieces 14b, 14b in both sides are bent rectangularly toward inside to bite into the middle of thickness of the plain braided wire 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible feed terminal composed of a flat braided wire for connecting a pair of terminal electrodes whose relative positions between terminals change due to an earthquake or movement of the device.

[0002]

2. Description of the Related Art A flexible power supply terminal is, for example, an input terminal of a large current using device such as a spot welding machine or an electric discharge machine which uses a large current of hundreds to thousands of amps, and the large current using device. A large current can be supplied by connecting a flat wire braided wire to the output terminal of the large current supply power supply that supplies a large current to the device.If the earthquake or vibration or the position of the device causes the relative position between the terminals to rise or fall. Even if it changes to
This is a power supply terminal that avoids the possibility of disconnection by absorbing the relative deviation by flexibility.

FIG. 3 shows a first conventional flexible feed terminal using a flat braided wire, which is a flat rectangular tube obtained by cutting a cylindrical copper tube into short pieces and flattening them with a press. The two flat wire braided wires 1 are passed through the two shaped connecting terminals 2a and 2b (Fig. 3 (d)), and the connection terminals 2a and 2b are further crushed in the flat direction by pressing to be integrated with the flat wire braided wire 1. In this case, two bolt through holes 3 and 3 are formed at required positions of the connection terminals 2a and 2b.

FIG. 4 shows a second conventional flexible feed terminal using a flat braided wire, which is shown in (a) and (b) of FIG.
As shown in FIG. 5, the end of the flat braided wire 5 is inserted into the gap 4c between the upper surface 4a and the lower surface 4b of the connection terminal 4 formed by bending a strip-shaped copper plate into a U-shape by press and Line 5
Abutting the end edge of and the folded end of the connection terminal 4,
As shown in (c), the connection terminals 4 are crushed in a flat direction by a press to be integrated with the flat net braided wire 5 at both ends of the flat net braided wire 5, and bolts are provided at required positions of each connection terminal. A through hole 6 is formed.

FIG. 5 shows a third conventional flexible feed terminal using a flat braided wire. As shown in FIG. 5 (a), a strip-shaped copper plate is bent into a U-shape by pressing. 7c between the upper surface 7a and the lower surface 7b of the connecting terminal 7
The end portion of the flat braided wire 8 is put in the above, and as shown in (b), the side end of the flat braided wire 8 and the folded end of the connection terminal 7 are brought into contact with each other, and the connection terminal 7 is flattened by pressing. The flat mesh braided wire 8 is crushed and integrated with the flat mesh braided wire 8 at both ends, and bolt through holes 9 are formed at required positions of each connection terminal.

FIG. 6 shows a fourth conventional flexible feed terminal using a flat braided wire, in which a strip-shaped copper plate is bent by a press into a U-shape and the rising pieces on both sides are inclined with respect to each other. Connection terminal 10 bent so as to approach
The end portion of the flat braided wire 11 is placed on the lower surface portion 10a of the and the both ends of the flat braided wire 5 are connected to the rising piece 10 of the connection terminal 4.
Abut on the bases of b and 10c and press the rising piece 1
0b and 10c are crushed in the flat direction to be integrated with the flat braided wire 11 at both ends of the flat braided wire 11,
A bolt through hole 12 is formed at a required position of each connection terminal.

[0007]

In the flexible power supply terminal shown in FIG. 3, the inner diameter of the cylindrical copper tube used as the material for the connection terminals 2a and 2b is the entire circumference when the flat mesh braided wire 1 having two layers is crushed. It has to be the same, and therefore, the selection of the cylindrical copper tube according to the width of the flat braided wire 1 is limited, so that it is difficult to produce various capacities. Further, in the flexible power supply terminal shown in FIG. 3, the inner diameter of the cylindrical copper tube used as the material for the connection terminals 2a and 2b must be the same as the entire circumference when the flat braided wire 1 having two layers is crushed. , Fig. 3
As shown in (d), the flat rectangular tubular connection terminals 2a, 2b.
The flat net braided wire 1 of two layers is undulated and passed through,
If the connection terminals 2a and 2b are not crushed properly, the flat braided wires 1 and 1 will not be piled up neatly, resulting in a defect.

Since the flexible power supply terminal shown in FIG. 4 has a spring back at the bent portion, the upper surface portion 4 of the connection terminal 4 is
a and the lower surface portion 4b are easy to open, and the flat wire braided wire 5 is insufficiently integrated, and even if the relative position between the terminals changes up and down and the flat wire braided wire is tensioned, the flat wire braided wire is pulled from the connection terminal 4 It is unavoidable that a wire 5 easily comes out, and a gap is inevitably formed between the end edge of the flat braided wire 5 and the folded end of the connection terminal 4, and this gap or separation has occurred. Moisture may enter the gap between the wires 5 and rust may be generated, resulting in poor electrical conductivity. Similarly, even in the flexible power supply terminal shown in FIG. 5 and the flexible power supply terminal shown in FIG. 6, since there is a springback at the bent portion, the connection terminal is easily opened and integrated with the flat braided wire. Insufficient and has similar problems.

However, the flexible power supply terminals shown in FIGS. 4, 5 and 6 which have a defect that the flat braided wire easily comes off from the connection terminal are hardly adopted, and FIG. 3 which does not have such a defect. The flexible power supply terminal shown is generally used.

Therefore, even though it is a flexible power supply terminal in which a flat braided wire is tightened with a connection terminal formed by bending a strip-shaped copper plate, there is no drawback that the flat braided wire easily comes out of the connection terminal. It was left as a problem that it was easy to make a wire having a size of 2 and that it was fastened with a connecting terminal so that the overlapping of two or more flat net braided wires did not shift.

The present invention has been devised in view of the above-mentioned points. Although the connection terminal is formed by bending a strip-shaped copper plate, springback of the bent portion does not occur and the connection terminal is tightened. It is an object of the present invention to provide a flexible power supply terminal that has a strong force and is not likely to come out of a flat wire braided wire from a connection terminal even if a relative position between terminals changes vertically and tension acts on the flat wire braided wire. .

[0012]

The present invention is directed to a flat braided wire 1
3 and connection terminals 1 fitted and fixed to both ends of the flat braided wire 13
4 and 14 and bolt through holes 15 are formed in each connection terminal. The connection terminals 14 and 14 are strip-shaped copper plates 1.
4a is bent in a U shape, and rising pieces 14b on both sides are formed.
With the ends of the flat braided wire 13 inserted between 14b, the rising pieces 14b, 14b on both sides are raised.
b ′ and 14b ′ are secured, the flat braided wire 13 is wrapped and horizontally bent and crimped to the flat braided wire 13, and the leading ends 14b ″, 14 of the rising pieces 14b, 14b on both sides are also crimped.
The b "bends inward at a right angle and penetrates halfway into the wall thickness of the flat braided wire 13 to provide a flexible power supply terminal.

[0013]

1 shows an embodiment of a flexible power supply terminal according to the present invention. As shown in FIGS. 1 (a) and 1 (b), the flexible power supply terminal has connection terminals 14, 14 fitted and fixed to both ends of a flat braided wire 13. The connection terminals 14 and 14 are shown in FIG.
The strip-shaped copper plate 14a indicated by the alternate long and short dash line is bent into a U shape indicated by the alternate long and two short dashes line, and the rising pieces 14b, 14b on both sides are formed.
And the bottom portion 1 that matches the width dimension of the flat braided wire 13 between them
4c is secured and the end of the flat braided wire 13 is inserted and placed on the bottom surface portion 14c. Further, the rising pieces 14b and 14b on both sides are raised to the base portions 14b 'and 14b.
The flat net braided wire 13 is wrapped with the b's left and folded horizontally and crimped to the flat net braided wire 13, and the tips 14b ", 14b" of the rising pieces 14b, 14b on both sides are bent inward at right angles to form a flat surface. The net braided wire 13 has cut into the middle part of the wall thickness. Then, bolt through holes 15 and 15 are formed at two locations that coincide with the tips 14b ″ and 14b ″. In this way, the tips 1 of the rising pieces 14b, 14b are
Since 4b "and 14b" are bent inward at right angles and penetrate into the middle of the thickness of the flat braided wire 13,
Spring back force (rotational moment) of the bent part
Is converted into a force that pushes each other on the surface where the tips 14b ″ and 14b ″ meet, and is balanced, and the flat braided wire 13
There is no fear that the tips 14b "and 14b" will come out due to the engagement force of. The flat braided wire 13 is, for example,
An ultrafine annealed copper wire having a diameter of 0.12 mm is woven.

The method of manufacturing this flexible power supply terminal is shown in FIG.
As shown in (a), the strip-shaped copper plate 14a is placed on the upper surface of the lower die K ₁ of the press to form the first recess K _{1 ′} corresponding to the first recess K _{1 ′} formed in the lower die K ₁ . upper mold by lowering the K _2a copper plates 14a code 14 of the first recess K _{1 'to} the corresponding shape by pressing the copper plate 14a indicated by _a1 in the longitudinal direction both ends of the screen tint braided wire thickness of Approximately 1/2 length bite piece 14
b ″ and 14b ″ are raised, and then the second upper mold K _2b corresponding to the second recess K _{1 ″} formed in the lower mold K ₁ is lowered as shown in FIG. 2 (b). As a result, the copper plate 14a is pressed into a shape corresponding to the second recess K _{1 ″} indicated by the reference numeral 14 _a2 , and a bottom surface portion 14c that matches the width dimension of the flat braided wire 13 is secured in the center portion of the copper plate 14a. 2 in an inclined state, and then, as shown in FIG. 2 (c), the pressing plates K ₃ , K ₃ fitted in the groove K _{1 ″ ′} formed in the lower mold K ₁ are moved close to each other so as to move the pressing plates K ₃ , K _3. The bottom of the pressure plate K ₃ , K ₃
After vertically raising both sides of c as indicated by reference numeral 14 _a3 , the second upper mold K _2b is released in the horizontal direction and then returned to its original upper position, and then as shown in FIG. 2 (d). Then, the end of the flat braided wire 13 is placed on the bottom surface portion 14c, and a high-rigidity pressing piece P having a width dimension slightly smaller than that of the flat braided wire 13 is laid on the end of the pressing piece P. By pressing both ends with the fixing means R, the flat braided wire 13 is pressed by the presser piece P, and in that state, the pressing plates K ₃ , K ₃ are moved closer to each other,
Folded gently inclined state as shown the rising portion of the copper plate 14a by the reference numeral 14 _a4 at a downward inclined surface of the pressure receiving plate K _3, K _3, then remove the pressing piece P, then as shown in FIG. 2 (e), The pressing plates K ₃ , K ₃ are moved apart and turned upside down so that the rising surface of the copper plate 14 a at the leading end 14 b ′,
14b 'is squeezed so as not to swell, and the second upper mold _K2b is lowered again, as shown in FIG. 2 (f).
The biting pieces 14b "and 14b" are bitten into the flat net braided wire 13 at the center in the width direction to the middle of the wall thickness. Then, after removing from the mold, as shown in FIG. 1A, bolt through holes 15, 15 are formed.

The flexible power supply terminal of the present invention and the pair of connected terminal electrodes are connected to each other by stacking the connection terminals 14 and 14 on the lower surface of the connected terminal electrode and mounting the bolts on the flexible power supply terminal and the connected terminal. After passing the plain washer and the spring washer through the through bolt through the bolt through hole 15 of the electrode, the nut is fastened. Connection terminal 1
4, 14 are the tips 14 of the rising pieces 14b, 14b.
Since b "and 14b" bite into the center of the flat braided wire 13 in the width direction to the middle of the wall in the shape of a rib, the pressing force of the bolts and nuts can be sufficiently received. Therefore, the connection terminals 14 and 14 have a structure in which the pressing force of the bolts and nuts is effectively applied in addition to the force of hugging and tightening the flat braided wire 13 which the connection terminals 14 and 14 have.

[0016]

As described above, in the flexible power feeding terminal of the present invention, similar to the conventional product of FIGS. 4 to 6, a flat net braided wire is used as a connecting terminal formed by bending a strip-shaped copper plate. Although it is a flexible power supply terminal that is tightened, unlike the conventional example, the tips of the rising pieces on both sides are bent at right angles into ribs and joined together, and the middle part in the width direction of the flat braided wire Since the springback of the bent portion of the connection terminal is eliminated because it has been bitten into, the connection terminal is more flexible than the flexible power supply terminal made by tightening the flat braid with the connection terminal formed by bending the conventional strip-shaped copper plate. The tightening force is strong and can be obtained almost the same as the conventional product in Fig. 3. Similarly, even if the relative position between terminals changes up and down and the tension acts on the braided braid, the braided braid will come out of the connection terminal. There is no fear.

[Brief description of drawings]

FIG. 1 shows an embodiment of a flexible power supply terminal according to the present invention.
(A) is a front view of a flexible power supply terminal, (b) is an Ib-Ib sectional view in (a).

FIG. 2 is a manufacturing process diagram for explaining a manufacturing method of the flexible power supply terminal of the present invention.

FIG. 3 shows a flexible feed terminal using a first, braided braided wire according to a conventional example. (A) is a side view of the flexible power supply terminal,
(B) is a front view of a flexible power supply terminal, (c) is a IIIb-IIIb sectional view in (b), (d) is a principal part sectional view at the time of manufacture.

FIG. 4 shows a second conventional method for manufacturing a flexible power supply terminal using a flat braided wire, wherein (a), (b), and (c) are manufacturing steps of the flexible power supply terminal. Fig.

FIG. 5 is a process drawing showing a third method for manufacturing a flexible power supply terminal using a flat braided wire according to a conventional example.

FIG. 6 is a process diagram showing a method of manufacturing a flexible power supply terminal using a fourth flat wire braided wire according to a conventional example.

[Explanation of symbols]

 13 ... Flat wire braided wire 14 ... Connection terminal 14a ... Strip-shaped copper plate 14b ... Standing piece 14b '... Standing base 14b "... Standing piece tip 14c ... Bottom part 15 ... Bolt through hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayoshi Sasanuma, Tanakuna, Ina-cho, Tsukuba-gun, Ibaraki 1387-5 (72) Hideo Sasanauma, Ina-cho, Ina-cho, Tsukuba-gun, Ibaraki 1393-5

Claims (1)

[Claims] 1. A flat braided wire and connection terminals fitted and fixed to both ends of the flat braided wire, and bolt through holes are formed in each connection terminal. The connection terminals are strip-shaped. Bend the copper plate into a U-shape, insert the ends of the flat braided wire between the rising pieces on both sides, and raise the rising pieces on both sides to secure the base and fold the flat braided wire horizontally to wrap the flat braided wire. The flexible feeding terminal is characterized in that it is crimped to, and the tips of the rising pieces on both sides are bent inward at right angles and cut into the middle of the wall thickness of the flat braided wire.