JPH086076Y2 - Thin wire cable for remote control - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable type window regulator for automobiles and the like, and a small diameter wire cable used as an inner cable for a control cable arranged for remote control of vehicles or industrial equipment. is there.

[0002]

2. Description of the Related Art Conventionally, a hard steel wire (SWRH6) is used as a small diameter wire cable used for a conventional cable type window regulator or an inner cable of a control cable, or a dobby cable of an automatic loom.
2A) A core wire called a single twist in which a plurality of side wires made of the same material as the core wire are twisted around each other, and a double twist in which a plurality of twisted single twists (strands) are used are doing.

[0003]

Recently, the control cable has become an important position as a window regulator for automobiles and a part for transmitting remote control of automobiles and industrial equipment, and it has come to be used under severe conditions. Came. In particular, in a window regulator of an automobile or the like, the sliding pulley that guides the inner cable has to have a small diameter because it is arranged in a narrow place inside the door, and the inner cable is bent with a large curvature by the sliding pulley. Since it will move back and forth, durability is strongly required.

In the thin wire cable used as the inner cable, six outer layer wires (14) are arranged around one core wire (10) and twisted as shown in FIG. A single-twisted wire cable called a 1 + 6 twisted structure, and a double-twisted wire cable called a 7 × 7 twisted structure in which seven strands (1) and (2) having the same structure as the single-twisted wire cable are twisted as shown in FIG. As shown in FIG. 4, eight side strands (2) having the same configuration as the single-stranded wire cable are arranged around a core strand (1) formed by twisting 19 wires, and twisted together to form 1 × 19 + 8. There are various types depending on the twist configuration, such as a wire cable called a x7 twist configuration.

A multi-twisted wire cable is better than a single-twisted wire cable, and a 1 × 19 + 8 × 7 multi-twisted wire cable is better than a 1 + 6 multi-twisted wire cable.
Although it is excellent in flexibility and flexibility, it could not fully satisfy the durability required for a window regulator of an automobile or a dobby cable of an automatic loom. The present invention reveals a wire cable with improved durability.

[0006]

The wire cable of the present invention is a multi-twisted wire cable in which only metal wires are twisted together, and the core wire (21) of each strand is SUS304.
The stainless steel wire and the metal wire on the outer peripheral portion are hard steel wires.

[0007]

[Effect] Compared with the conventional one made of hard steel wire, the cutting durability was improved.

[0008]

EXAMPLE FIG. 1 shows the present invention applied to a 7 × 7 twisted wire cable. Core strands (1) and 6
The core wires (11) and (21) of the side strands (2) of the book are JISG
4313 (SUS304A-B) stainless steel wire, and the outer layer wires (12) and (22) surrounding the core wires (11) and (21) are, for example, J
JI made of IS G 3506 SWRH 62A material
It is a hard steel wire of SG 3521 SWB-C. The diameter of the core wire (11) of the core strand (1) is 0.2 mm, the diameter of the other wires is 0.17 mm, and the maximum diameter of the wire cable is 1.5 mm.

FIG. 3 shows the present invention applied to a 1 × 19 + 8 × 7 multi-stranded wire cable. Core strand
The core wire (11) of (1) and the core wire (21) of the eight side strands (2) are stainless steel wires similar to FIG. 1, and the other wires are hard steel wires similar to FIG. The diameter of the core wire (11) of the core strand (1) is 0.17 mm, the other wires are 0.14 mm, and the maximum diameter of the wire cable is 1.5 mm.

It is unexpected for a person skilled in the art to use stainless steel wires for the core wires (11) and (21). because,
With a wire cable made of all hard steel wire and a wire cable made of stainless steel wire under the same twist condition,
This is because it is common knowledge that hard steel wire is superior in cutting durability.

FIG. 6 shows a comparison of the cut-off durability of five samples of a lead-plated hard steel wire cable and a stainless wire cable each having a 7 × 7 twist structure and a diameter of 3 mm. Each wire cable has a diameter of 340
A durability test was conducted by bending the wire at a right angle via a pulley of mm, applying a load of 20 kg to one end, connecting the other end to a reciprocating drive device, and repeatedly reciprocating the wire cable.

The maximum durability of the hard steel wire wire cable up to the breakage is 61.3 × 10 ⁴ , and the minimum durability is 40.
It was 5 × 10 ⁴ , and the average number of times of endurance was 46.4 × 10 ⁴ .
On the other hand, the maximum durability of the stainless wire cable up to the breakage is 45.7 × 10 ⁴ , and the minimum durability is 1
It was 9.5 × 10 ⁴ , and the average durability was 29.7 × 10 ⁴ . In this way, it is not considered common sense that using a stainless wire, which is inferior in cut resistance to a hard steel wire, as the core wire improves the cut durability in comparison with a wire cable made of all hard steel wires. is there. Table 1 shows the unexpected results.

[0013]

[Table 1] In the table, A is the embodiment of FIG. 1 and B is the embodiment of FIG. As shown in Fig. 7, the test method is to endlessly hang the wire cable (9) across two large pulleys (4) (5) with a diameter of 500 mm and three small pulleys (7) with a diameter of 30 mm. A large reciprocating device (6) with a crank is connected to the upper large pulley (4), a weight (8) of 80 kg is applied to the lower large pulley (5), and a wire cable ( Repeat 9) to move back and forth.

In the present inventions A and B, SUS304 is used for the core wire. The test results are from 5 samples each.

FIG. 2 shows a wire cable having a 7 × 7 twist structure, in which seven wires and six wires constituting the core strand (1) are provided.
Each core wire (22) of the side strand (2) of the book is a stainless wire, and the other wires are hard steel wires.

FIG. 4 shows a 1 × 19 + 8 × 7 multi-twisted wire cable, of which 19 wires constituting the core strand (1) include 7 wires except 12 wires (13) in the outer layer, and The core wire (21) of each side strand (2) (2) is a stainless wire and the other wires are hard steel wires.

FIG. 5 shows a single-stranded wire in which the core wire (10) is stainless steel and the side wires (14) and (14) are hard steel wires. Each of the wires of the above-mentioned examples is superior in breakage durability to a wire cable formed only of hard steel wire. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims for utility model registration.

[Brief description of drawings]

FIG. 1 is an end view of a 7 × 7 multi-stranded wire cable.

FIG. 2 is an end view of another embodiment of the above.

FIG. 3 is an end view of a 1 × 19 + 8 × 7 multi-stranded wire cable.

FIG. 4 is an end view of another embodiment of the same.

FIG. 5 is an end view of a single-stranded wire cable.

FIG. 6 is a durability test data table.

FIG. 7 is an explanatory diagram of a durability test device.

[Explanation of symbols]

 (11) Core wire (21) Core wire

Claims (1)

[Scope of utility model registration request] 1. In a multi-twisted wire rope in which a plurality of strands obtained by twisting only a plurality of metal wires are twisted together, a core wire (11) (21) of each strand is made of SUS30.
4 is a stainless steel wire, and the metal wire on the outer circumference is a hard steel wire.