JP2002302887A - Elastic coupling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic coupling device resistant to rust, excellent in durability and easy to adjust strength and elasticity. SOLUTION: This elastic coupling device is obtained by forming a ring of a composite elastic wire obtained by burying an elastic wire or plural elastic wires comprising a metal wire or a strand wire composed of twisted metal wires covered with an elastic material, in an elastic material as a core material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is applied to an elastic connecting member which is resistant to rust, has excellent durability, can easily adjust strength and elasticity, can be manufactured easily and is inexpensive, especially to a chain system and a tension rope system. The present invention relates to an elastic coupling device.

[0002]

2. Description of the Related Art Conventionally, there is a connecting chain having a structure shown in FIG. 8 for connecting an abutment, a pier, and a bridge with a connecting member to prevent the bridge from falling. In the figure, a plurality of bridges 22 are installed on a pier 21 erected on the ground via a cushioning material 24 such as rubber. A connecting chain 23 composed of a number of chain rings is mounted between a fixing bracket 26 fixed to the upper portion of the side wall of the bridge 22 and a fixing bracket 27 fixed to the bottom of the bridge 22, and exceeds a swing limit due to an earthquake or the like. In this case, the bridge 22 is fixed so as not to fall from the pier 21.

[0003] It is important that such a connection tool or chain system be resistant to rust, have excellent durability, be easily adjusted in strength and elasticity, and be simple and inexpensive to manufacture.

Conventionally, techniques in such technical fields are disclosed in JP-A-6-23915 and JP-A-11-93117.
There is an official gazette. These cover the chain with an elastic material such as rubber so that the chain can be expanded and contracted by the gap between the chain rings or the elasticity of the rubber, but the elasticity cannot be adjusted sufficiently. Further, in such a method, rubber is molded, vulcanized and coated at the stage when the chain is completed, so that it takes a long time to manufacture the chain. In addition, since all of the buffering action is substantially performed only by the rubber, there is a problem that the rubber is deteriorated by repeated deformation, the buffering function is reduced, and the rubber is separated from the chain.

Japanese Patent Application Laid-Open No. 2-169787 discloses that
A wire rope coated with rubber is disclosed, but this is due to the partial fatigue of the rubber between the wires embedded in the rubber due to repeated use, the durability when the surface rubber is damaged, There is a problem that the degree of freedom of deformation is limited during use.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is resistant to rust, has excellent durability, can easily adjust strength and elasticity, and is simple and inexpensive to manufacture. In particular, it is an object of the present invention to provide a connector applicable to a chain system and a tension rope system.

[0007]

According to the present invention, there is provided an elastic wire formed by forming one or a plurality of elastic wires each formed by covering a metal wire or a stranded wire obtained by twisting a plurality of metal wires with an elastic material. It is a connecting tool. Further, another invention is to form a composite elastic wire in which one or more elastic wires obtained by coating a metal wire or a stranded wire obtained by twisting a plurality of metal wires with an elastic material and embedded in the elastic material are used as a ring. It is an elastic connector formed.

Here, it is preferable that both ends of the elastic wire in the longitudinal direction of the elastic wire are fixed by locking members. Further, the elastic connecting member is preferably formed in an annular shape by spirally winding an elastic wire. Further, as the elastic material of the elastic connector, rubber, thermoplastic elastomer, a mixture of rubber and thermoplastic resin, or a mixture thereof can be used.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A specific example of the elastic connecting device of the present invention will be described below.
This will be described in detail with reference to the drawings.

FIG. 1 is a schematic view of an elastic connector formed from the composite elastic wire of the present invention. The elastic connector P is shown in FIG.
As shown in the cross-sectional view, seven elastic wires 4 each having a metal element wire 2 covered with an elastic material 3 are twisted with each other to form one composite twisted wire 5, and the periphery of the composite twisted wire 5 is further increased. The composite elastic wire 1 is formed by coating with the elastic material 6.

Here, the metal element wire 2 is preferably a steel element wire, and its surface is preferably plated with brass or the like in order to enhance the adhesion to the elastic material 3. Although the size of the metal strand 2 is not particularly limited, for example, the diameter is 0.1 mm.
Those having a size of 1 to 5 mm are used. And the metal strand 2
The elastic wire 4 is formed by being covered with an elastic material 3 such as rubber.

Here, the elastic material is natural rubber, polyisoprene rubber, halogenated butyl rubber such as chlorinated butyl rubber or brominated butyl rubber, polybutadiene rubber (BR), styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM). ), Chloroprene rubber (CR), acrylonitrile-butadiene rubber (NBR), butyl rubber (IIR), etc., and one or more of these rubber components can be mixed.
The ethylene-propylene-diene rubber (EPDM)
Is an ethylene-propylene rubber (EPM) containing a third diene component, wherein the third diene component is a non-conjugated diene having 5 to 20 carbon atoms, for example, 1,4-
Pentadiene, 1,4-hexadiene, 1,5-hexadiene and the like can be used.

Of these rubber materials, chloroprene rubber, which is particularly light-resistant, is preferred. In the present invention, as the elastic material, in addition to the rubber material, a thermoplastic resin and a thermoplastic elastomer, and a mixture thereof can be used.

In FIG. 3, a plurality of elastic wires 4 (7
This is twisted to form a composite elastic wire 5, which is used as a core material, and the periphery thereof is further covered with an elastic material 6. Here, as the elastic material 6, a thermoplastic resin, a thermoplastic elastomer, or the like can be used in addition to the rubber material as in the case of the elastic material 3, but both can be the same or different materials.

The elastic connector according to the present invention is formed by, for example, bundling or twisting one or two to fifty such composite elastic wires 1 or twisting them to form an annular shape. Then, in order to form the composite elastic wire 1 in an annular shape, as shown in FIG. Here, the fixture 7 is firmly fixed so that both ends are not displaced and disengaged when tension and stress act on the composite elastic wire. For example, by folding both ends of the composite elastic wire 1, even when tension is applied, both ends are displaced in the direction of tension so that the fixed portion can be prevented from detaching. Here, the fixing tool 7 is a concept including a case where both ends of the composite elastic wire are fixed to each other, and it is not always necessary to use a fixing tool separately from the composite elastic wire.

Although the elastic coupler P shown in FIG. 1 of the present invention can be used as it is, as shown in FIG. 5, two elastic couplers or a combination of three or more elastic couplers can be used.

Further, as shown in FIG.
It can also be formed by winding it, winding it four or more times (not shown), and fixing both ends with the fixture 18.

As shown in FIG. 4, the elastic wire 14 of the present invention is formed by twisting a plurality of metal wires 12 and 13 not covered with an elastic material to form a stranded wire, and the stranded wire is formed of an elastic material. It can also be formed by coating with 16. FIG.
In the center metal wire 13 and its surrounding metal wire 12
However, it is needless to say that metal wires having the same diameter can be used.

When a plurality of metal wires are used as a stranded wire, the twist pitch can be adjusted appropriately. The diameter of the elastic wire and the composite elastic wire is preferably in the range of 0.5 to 10 mm.

As the method of coating the metal wire or the stranded wire with the elastic material, an ordinary method can be used. At the same time as vulcanization, it adheres to the surface of the metal strand by vulcanization.
In addition, the bonding treatment includes a method of plating the surface of the metal wire with brass or the like, or a method of applying the surface of the metal wire with a urethane-based primer.

FIG. 2 shows another embodiment of the present invention. In the figure, a metal wire 2 is covered with an elastic material 3 to form one elastic wire 4, and three of them are bundled to form a ring as illustrated in FIG. are doing. Although not shown, a plurality of elastic wires 4 may be twisted and formed into an annular shape to form an elastic coupler.

FIG. 7 is a schematic view showing the state of use of the elastic connector P of the present invention. In the figure, a connecting chain 24 is engaged via a resilient connecting member P of the present invention to a fixing member 36 fixed on the side surface of the pier 21 erected on the ground. Here, one elastic connecting member P is shown as being engaged between the fixing bracket 36 and the connecting chain 24, but two or more elastic connecting members P can be engaged.

[0023]

EXAMPLE The elastic coupler shown in FIGS. 1 and 3 was manufactured in the following manner.

Metal wire: steel, wire diameter: 0.175 mm, stranded wire: 24 wires / roll x 44 rolls Elastic material: inner: natural rubber / styrene butadiene rubber outer: chloroprene rubber Elastic coupler: long diameter x short of a chain-shaped body Diameter: 14.4 × 6.2 cm: Cross-sectional diameter of chain-shaped body (composite elastic wire): 1.6 cm Using the above elastic coupler, JIS f2106, diameter 1
3 Performance was evaluated based on the first type of test method. The results are as follows.

Elongation at break: 20% Strength at break: 7.5 tons Repeated compression strain test (elastic region): Maintains 90% or more of break strength after 1,000,000 cycles.

From the above test results, the elastic connecting device of the present invention
It has sufficient strength and durability, and the elongation at break is 20%, indicating that elasticity adjustment is possible.

The embodiments and examples disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[0028]

According to the present invention, since the elastic connecting device of the present invention covers the metal wire or the stranded wire of the metal wire with an elastic material such as rubber, even if external damage or cracks are generated in the elastic material.
Rust can be prevented from being generated without moisture penetrating into the internal metal wires. In addition, elastic material can be expected to buffer the tensile impact on metal strands (twisted wires), and the effect of relieving tension, compression and impact on repeated tension, compression and impact during use is large, and there is no functional deterioration. For long-term safe use, that is, durability can be improved. The elastic connector of the present invention can adjust physical properties such as strength according to its use by appropriately changing the wire diameter, shape, winding shape, and number of windings of the elastic wire or the composite elastic wire. Since the elastic connector of the present invention can arbitrarily change the ring shape, it can be attached at any position of the chain system and the tension rope system.

[Brief description of the drawings]

FIG. 1 is a schematic view of an elastic connector including a composite elastic wire of the present invention.

FIG. 2 is a schematic view of an elastic wire used in the elastic coupler of the present invention.

FIG. 3 is a sectional view of the composite elastic wire of FIG. 1;

FIG. 4 is a sectional view of the elastic wire of the present invention.

FIG. 5 is a schematic view of the elastic connector of the present invention.

FIG. 6 is a schematic view of an elastic connector according to the present invention.

FIG. 7 is a schematic diagram showing a state of use of the elastic connector of the present invention.

FIG. 8 is a schematic view showing a use state of a conventional connector.

[Explanation of symbols]

P elastic connecting device 1,11,19 composite elastic wire,
2,12,13 metal strand, 3,6,16 elastic material,
4,14 elastic wire, 5 composite stranded wire, 7,17,1
8 Fixtures.

Claims (5)

[Claims] An elastic connecting member formed by annularly forming one or a plurality of elastic wires in which a metal wire or a stranded wire obtained by twisting a plurality of metal wires is coated with an elastic material. 2. A composite elastic wire in which one or more elastic wires obtained by covering a metal wire or a stranded wire obtained by twisting a plurality of metal wires with an elastic material and embedded in the elastic material is used as a ring. An elastic coupler formed. 3. The elastic connecting device according to claim 1, wherein a longitudinal end of the elastic wire is fixed by a locking device. 4. The elastic connector according to claim 1, wherein the elastic wire is spirally wound and formed into an annular shape. 5. The elastic material is rubber, thermoplastic elastomer,
3. The elastic connector according to claim 1, which is a mixture of rubber and a thermoplastic resin, and a mixture thereof.