JP2762410B2 - Wire connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a wire connecting member, and more particularly to a connecting structure of a wire connecting member for connecting a working member such as a brush to an end of a wire.

[0002]

2. Description of the Related Art A wire connecting body in which a working member such as a brush is connected and connected to a wire is well known.
The device is inserted into a tubular portion of various devices to perform various operations. For example, a wire connector to which a brush is connected is used for cleaning inside a treatment tool insertion channel (forceps port or the like) of an electronic endoscope (electronic scope).

FIGS. 3 and 4 show a structure of a conventional wire connecting body to which a brush or the like is connected. As shown, a wire 1 is covered with a stranded wire (core material) 2 (sheath material). 3 coated. And a brush 4
In the case of FIG. 3, the covering material 3 is removed to expose the stranded wire 2, and the stranded wire 2 and the brush 4
Each of the support parts 5 is inserted into the pipe joint 6 and soldered to connect the two. In the case of FIG. 4, a coil joint 7 is used, and also in this case, the support 5
Are linked.

[0004]

However, in the above-mentioned conventional wire connection body, the pipe joint 6 and the coil joint 7 are used for connection as described above, and there is a problem that the number of parts is large. When the joints 6 and 7 are used, both the stranded wire 2 and the support 5 on the brush 4 side
7 and soldering must be securely connected, but in some cases, one of the connections may be insufficient.

Further, conventionally, the connecting portion between the wire 1 and the working member lacks flexibility, and when the wire 1 is inserted into a tubular portion having a large curvature, the movement may not be smooth. In some cases, stress was concentrated and it broke.

The present invention has been made in view of the above problems, and an object of the present invention is to enable a wire and a working member to be securely connected and fixed without using a joint, and a connecting portion between the wire and the working member. To provide a flexible wire connection.

[0007]

According to a first aspect of the present invention, there is provided a wire connector for fixing a working member to an end of a wire by removing an outer twisted wire. A core wire is exposed, and a stranded wire is formed by spirally winding the core wire. A connection portion of a working member is disposed in the spiral core wire of the stranded wire. Is fixed to the connecting portion. According to a second aspect of the present invention, in the stranded wire, the stranded wire is cut stepwise so as to become thinner toward the end.

[0008]

According to the first aspect of the present invention, the spiral core wire of the stranded wire is directly connected to the work member by soldering or the like, so that the work member such as a brush can be connected without using a joint. Can be securely connected and fixed. Further, according to the configuration of the second aspect, the stranded wire is gradually thinned, so that the connecting portion between the wire and the working member has flexibility.

[0009]

FIG. 1 shows the structure of a wire connector according to a first embodiment, and FIG. 2 shows the state of each member before connection of the wire connector of the second embodiment. In FIG. 1, a wire 10 is formed by covering a stranded wire (wire portion) 11 as a core material with a covering (sheath) material 12 made of a synthetic resin. The core wire 13 is cut and exposed. The core wire 13 is formed in a spiral (coil) shape as in FIG. 2A, and the brush 1 serving as a working member is attached to the spiral core wire 13.
5 will be fixed.

That is, the brush 15 has a support portion 16 as in FIG. 2 (B), and a cap 17 is attached to a tip portion. Therefore, the support portion 16 of the brush 15
The core wire 13 is fixed to the support portion 16 by winding the spiral core wire 13 and bonding it with solder 18. In the embodiment, the connecting portion between the stranded wire 11 and the supporting portion 16 is covered with a flexible synthetic resin tube 20.

According to the first embodiment, the brush 15
Is connected to the helical core wire 13, the brush 15 is directly connected to the stranded wire 11, and the brush 15 and the wire 10 are connected without using a joint. This connection is reduced to one type of connection between the working member and the wire, as compared with the case of a conventional joint that requires connection of both the working member side and the wire side. is there. Then, by inserting the wire 10 with the brush (15) into the treatment tool insertion channel of the endoscope, the channel can be cleaned.

Next, in the second embodiment shown in FIG. 2A, the stranded wire 21 is cut stepwise so as to become thinner toward the tip, and finally the core wire 13 is exposed. The core wire 13 is spirally wound and formed.
3, the support 16 of the brush 15 shown in FIG. 2B is fixed by soldering (18) in the same manner as described above. The outside of the connecting portion is similar to the first embodiment shown in FIG.
A tube 20 made of synthetic resin is covered.

According to the second embodiment, the hardness of the stranded wire 21 is gradually reduced toward the tip, and the flexibility of the connecting portion is improved. For example, even if the wire connector is inserted into the treatment tool insertion channel of the endoscope for cleaning and the connection between the wire 10 and the brush 15 is bent with a small curvature, stress may concentrate on a part. Absent. Therefore, the operability at the time of insertion into the tube is improved, and the connecting portion is not broken.

According to the above-described embodiment, the example in which the brush 15 is used as the working member has been described. However, other working members can be connected to the wire 10 in the same manner as described above.

[0015]

As described above, according to the first aspect of the present invention, the outer stranded wire is removed to expose the core wire,
A stranded wire is formed by spirally winding the core wire, and a connecting portion of the working member is arranged in the spiral core wire of the stranded wire. Since they are fixed, pipe joints, coil joints and the like become unnecessary, and the number of parts is reduced. In addition, the wire and the working member can be securely fixed.

According to the second aspect of the present invention, the stranded wire of the stranded wire is cut stepwise so as to become thinner toward the end, so that the connecting portion between the wire and the working member has flexibility. This has the advantage that the operability is improved, and that there is no fear of breaking of the connecting portion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a wire connector according to a first embodiment of the present invention.

FIGS. 2A and 2B are diagrams showing a configuration of a second embodiment, in which FIG. 2A shows a configuration of a stranded wire, and FIG. 2B shows a configuration of a brush.

FIG. 3 is a diagram showing a configuration of a conventional wire connector using a pipe joint.

FIG. 4 is a view showing a configuration of a conventional wire connection body using a coil joint.

[Explanation of symbols]

 1,10 wire, 2,11,21 stranded wire, 3,12 coating (sheath), 4,15 brush, 5,16 support, 13 core wire, 18 solder.

Claims (2)

(57) [Claims] 1. A wire connector for fixing a working member to an end of a wire, comprising a stranded wire in which a core wire is exposed by removing an outer stranded wire, and the core wire is spirally wound,
A connecting part of a working member is arranged in the spiral core of the stranded wire, and in this state, the connecting part of the core and the connecting part of the working member are fixed with an adhesive material. 2. The wire connector according to claim 1, wherein the stranded wire is cut stepwise so that the stranded wire becomes thinner toward an end.