JP7163142B2 - Relay wire - Google Patents

Description

The present disclosure relates to relay wires.

Cables for signal transmission used in audio equipment and the like are known.

This type of cable is generally arranged in a state of being covered with an insulating material, and a bare wire at the tip of the cable is inserted into a cable insertion opening provided in the terminal, thereby forming a terminal. are electrically connected (see Patent Document 1, for example).

WO2005/011067

By the way, in order to suppress signal deterioration during signal transmission, a cable thicker than the cable insertion opening of the terminal may be used as this type of cable. When such a thick cable is used, it cannot be inserted into the cable insertion opening of the terminal as it is. methods are adopted.

However, in such a method, since the worker individually cuts the strands in the cable, the number of strands to be connected to the terminal may be too small, or the strands to be connected to the terminal may be scattered. The electrical connection with the terminal may become unstable. Moreover, as a result, signal deterioration may occur during signal transmission. In addition, there is also the problem that such work is extremely complicated.

The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a relay wire that enables good electrical connection between a terminal and a cable.

The main disclosure that solves the above-mentioned problems is
A relay wire that relays an electrical connection between a terminal and a cable for signal transmission,
an electric wire main body formed in a tubular shape by a metal member;
an opening formed at one end of the electric wire main body so as to allow the cable to be inserted so as to communicate with the electric wire main body;
a tip portion formed so as to be insertable into the cable insertion port of the terminal on the other end side of the wire main body,
The electric wire main body is
making electrical connection with the cable by contacting the wires of the cable inserted into the wire body through the opening;
The tip portion is inserted into the cable insertion port and pressed and fixed to an electrical connection member in the terminal to electrically connect with the terminal,
The metal member exhibits a braided structure formed by a plurality of metal wires,
It is a relay wire.

According to the relay wire according to the present disclosure, good electrical connection between the terminal and the cable is possible.

1 is an external view showing the overall configuration of a relay wire according to the first embodiment; FIG. Sectional drawing which cut|disconnected the relay wire which concerns on 1st Embodiment along the longitudinal direction Sectional drawing which cut|disconnected the relay electric wire which concerns on 1st Embodiment along the transversal direction The figure explaining the attachment method of the relay electric wire which concerns on 1st Embodiment. The figure explaining the attachment method of the relay electric wire which concerns on 1st Embodiment. The figure which shows the state by which the relay electric wire which concerns on 1st Embodiment was attached to the terminal. A diagram showing the configuration of a pressing member according to the second embodiment. The figure which shows the state which pressed the relay electric wire from the outside by the pressing member which concerns on 2nd Embodiment.

Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same functions are denoted by the same reference numerals, thereby omitting redundant description.

(First embodiment)
[Configuration of relay wire]
An example of the configuration of the relay wire according to the first embodiment will be described below with reference to FIGS. 1 to 5. FIG. In addition, this embodiment demonstrates the aspect which applies the relay wire which concerns on this invention to audio equipment.

FIG. 1 is an external view showing the overall configuration of a relay wire 1 according to this embodiment. FIG. 2 is a longitudinal sectional view of the relay wire 1 according to this embodiment. FIG. 3 is a cross-sectional view of the relay wire 1 according to the present embodiment cut along the lateral direction.

4A and 4B are diagrams for explaining a method of attaching the relay wire 1 according to this embodiment. FIG. 4A is a diagram schematically showing work when connecting the cable 20 to the relay wire 1. FIG. FIG. 4B is a diagram schematically showing the work of connecting the relay wire 1 to the terminal 100 in the process subsequent to FIG. 4A.

FIG. 5 is a diagram showing a state in which the relay wire 1 according to this embodiment is attached to the terminal 100. As shown in FIG.

The relay wire 1 according to this embodiment is applied to, for example, audio equipment. The relay wire 1 electrically connects a cable 20 extending from the main body of the audio equipment and a terminal 100 provided on the audio speaker. The cable 20 according to this embodiment has an outer diameter larger than the inner diameter of the cable insertion opening 110 of the terminal 100 .

First, the configuration of the terminal 100 according to the present disclosure will be described with reference to FIG.

The terminal 100 includes, for example, a housing 100a, a cable insertion port 110 formed on a side surface of the housing 100a, an electrical connection member 120 disposed inside the housing 100a, and an electrical connection member 120 inside the housing 100a. It has fixing members 130 disposed at opposing positions.

For example, the fixing member 130 is configured to be vertically movable with respect to the electrical connection member 120 by an operator's operation, that is, to be able to protrude from the electrical connection member 120 and retractable from the electrical connection member 120 side. It is configured. The fixing member 130 is disposed at a position retracted from the electrical connection member 120 before the connection target (in the present embodiment, the relay wire 1) is inserted into the housing 100a, and is removed from the cable insertion port 110 into the housing. A connection target can be inserted into 100a. Further, after the connection target is inserted into the housing 100a, the fixing member 130 descends from above the connection target so as to press the connection target against the electrical connection member 120 (that is, the electrical connection member 120 side, and protrudes toward the electrical connection member 120 side), and presses and fixes the connection object between the electrical connection member 120 and the electrical connection member 120 . As a result, the electrical connection member 120 comes into contact with the connection target inserted into the housing 100a through the cable insertion opening 110, and is electrically connected to the connection target.

It should be noted that the terminal 100 according to the present disclosure may be of any form as long as it is a conventionally known press-fixed terminal having the cable insertion opening 110 .

Next, the configuration of the relay wire 1 will be described.

The relay wire 1 includes a tubular wire main body 10 , an opening 11 formed at one end of the wire main body 10 , and a tip end 12 formed at the other end of the wire main body 10 .

In the relay wire 1, typically, the cable 20 is inserted into the wire main body 10 through the opening 11 on one end side of the wire main body 10, and the tip portion is inserted on the other end side of the wire main body 10. 12 is inserted into the cable insertion opening 110 of the terminal 100. FIG.

The wire main body 10 is formed of a metal member in a cylindrical shape, and has a hollow portion 10 a along the outer shape of the cable 20 inside the wire main body 10 . Then, the wire body portion 10 contacts with the wire 21 exposed from the tip of the cable 20 inserted into the wire body portion 10 at the inner peripheral side surface of the hollow portion 10a, thereby Make an electrical connection.

The inner diameter of the hollow portion 10a in the wire body portion 10 typically gradually decreases from the opening portion 11 side toward the tip portion 12 side. As a result, when the cable 20 is inserted into the wire main body 10, the wires 21 at the tip of the cable 20 are compressed by the inner peripheral side surface of the hollow portion 10a of the wire main body 10. The cable 20 can be held in the This secures the mechanical stability of the cable 20 inside the wire main body 10 . In addition, this increases the contact area between the inner peripheral side surface of the wire main body 10 and the cable 20, thereby ensuring a good electrical connection.

The outer shape of the wire main body 10 typically has a truncated cone shape in which the outer diameter decreases from the opening 11 side toward the tip portion 12 side.

The metal member forming the wire main body 10 has, for example, a braided structure formed of a plurality of metal wires. This allows the relay wire 1 to be flexibly deformed.

The metal member forming the wire main body 10 is made of, for example, the same metal material as the wires 21 of the cable 20, and typically includes a copper material. As a result, the cable 20 and the terminal 100 are electrically connected without interposing different materials such as solder, and the reflected power is less likely to occur during signal transmission.

The opening 11 is formed at one end of the wire main body 10 and communicates with the hollow portion 10 a inside the wire main body 10 . The opening 11 has, for example, an inner diameter equal to or larger than the outer diameter of the cable 20, and is configured so that the cable 20 can be inserted into the hollow portion 10a through the opening 11. As shown in FIG. The inner diameter of the opening 11 is made variable by, for example, deforming the wire main body 10 .

The tip portion 12 is a linearly extending portion formed on the other end side of the wire body portion 10 . The distal end portion 12 has an outer diameter equal to or smaller than the inner diameter of the cable insertion opening 110 of the terminal 100 and is configured to be insertable into the cable insertion opening 110 of the terminal 100 .

The distal end portion 12 is inserted into the cable insertion opening 110 and press-fixed to the electrical connection member 120 in the terminal 100 to electrically connect with the electrical connection member 120 .

The tip portion 12 is, for example, integrally formed with the wire body portion 10, and the outer diameter of the wire body portion 10 is gradually reduced from one end side (opening portion 11 side) toward the other end side. is formed as a tip on the other end side of the wire main body portion 10.

Moreover, at least part of the tip portion 12 is formed, for example, by bundling the tips of a plurality of metal wires forming the braided structure of the wire main body portion 10 by welding (for example, arc welding). That is, the tip portion 12 is flexibly deformed when pressed by the electrical connection member 120 inside the terminal 100 . By making the tip portion 12 flexibly deformable in this manner, a contact area between the tip portion 12 and the electrical connection member 120 is ensured, and good electrical connection between the tip portion 12 and the electrical connection member 120 is ensured. The connection state will be maintained.

In addition, it is desirable that the outer region of the wire main body 10 is subjected to an insulating treatment or an anti-oxidation treatment. As a result, it is possible to prevent noise from being superimposed on the electrical signal transmitted by the relay wire 1 due to a foreign object coming into contact with the outside of the relay wire 1 . Moreover, it is possible to suppress the deterioration of the electrical characteristics of the relay wire 1 thereby. As a method of insulating treatment or anti-oxidation treatment, for example, a method of forming an insulating film or an anti-oxidation film on the outside of the wire main body 10 by electrodeposition, or the like can be used.

[Installation method of relay wire]
Next, with reference to FIGS. 4A, 4B, and 5, an example of a mounting method of the relay wire 1 will be described. In addition, attachment of the relay electric wire 1 which concerns on this embodiment is performed by an operator's manual work, for example.

When using the relay wire 1 to make an electrical connection between the cable 20 and the terminal 100, the operator performs the work as follows.

First, the operator prepares the cable 20 with the wires 21 exposed at the tip, and inserts the cable 20 into the wire main body 10 from the opening 11 of the relay wire 1 (see FIG. 4A). ).

At this time, the operator spreads the hollow portion 10a of the electric wire main body 10 at the tip (strand 21) of the cable 20, and as a reaction, the cable 20 is compressed to the extent that it is compressed on the inner peripheral side surface of the hollow portion 10a. is pushed into the wire main body 10 . As a result, the wire strands 21 of the cable 20 are pressed against the inner peripheral side surface of the hollow portion 10a of the wire body portion 10, and the wire strands 21 of the cable 20 are held by the inner peripheral side surface of the hollow portion 10a of the wire body portion 10. , and electrically connected to the wire main body 10 .

Next, the operator inserts the tip 12 of the relay wire 1 into the cable insertion opening 110 of the terminal 100 (see FIG. 4B).

Next, the operator lowers the fixing member 130 provided on the terminal 100 toward the electrical connection member 120 while the tip 12 of the relay wire 1 is inserted into the cable insertion opening 110 of the terminal 100 (Fig. 5). As a result, the distal end portion 12 of the relay wire 1 is press-fixed so as to be sandwiched between the fixing member 130 and the electrical connection member 120 in the terminal 100 . Thus, electrical connection is established between the relay wire 1 and the electrical connection member 120 .

As described above, the relay wire 1 is electrically connected to each of the cable 20 and the terminal 100 and is ready to relay the transmission and reception of electrical signals between the cable 20 and the terminal 100 .

[effect]
As described above, according to the relay wire 1 according to the present embodiment, even when the cable 20 having a thickness equal to or larger than the allowable diameter of the cable insertion opening 110 of the terminal 100 is used, a good electrical connection state is ensured. , an electrical connection can be made between the terminal 100 and the cable 20 . In addition, according to the relay wire 1 according to the present embodiment, since the cable 20 and the terminal 100 can be electrically connected without interposing different materials such as solder, reflected power is generated during signal transmission. This makes it possible to suppress signal degradation during signal transmission.

Further, according to the relay wire 1 according to the present embodiment, it is useful in that the electrical connection between the terminal 100 and the cable 20 can be made by a simple operation.

Moreover, in particular, the relay wire 1 according to the present embodiment is made of a flexible metal material (particularly, a braided metal material). Therefore, when the tip portion 12 is press-fixed to the electrical connection member 120 inside the terminal 100 , the tip portion 12 is deformed so as to be spread out. As a result, a wide contact area is secured between the tip portion 12 and the electrical connection member 120 in the terminal 100, and a good electrical connection can be secured. In addition, with such a configuration, it is possible to ensure the degree of freedom of routing when inserting the relay wire 1 into the cable insertion opening 110 of the terminal 100 .

(Second embodiment)
Next, a relay wire 1 according to a second embodiment will be described with reference to FIGS. 6 and 7. FIG.

The relay wire 1 according to the present embodiment is pressed from the outside by the pressing member 30, and the pressure from the pressing member 30 compresses and fixes the cable 20 inside the wire main body 10, which is different from the first embodiment. . Note that the description of the configuration common to the first embodiment will be omitted.

FIG. 6 is a diagram showing the configuration of the pressing member 30 according to this embodiment. FIG. 7 is a diagram showing a state in which the relay wire 1 is pressed from the outside by the pressing member 30 according to this embodiment.

The pressing member 30 is composed of, for example, a pair of plate members 30a and 30b. The pair of plate-like members 30a and 30b press the relay wire 1 from the outside so as to sandwich the relay wire 1 from above and below. The pair of plate members 30a and 30b are, for example, fastened and fixed using bolts and nuts with the relay wire 1 sandwiched therebetween, thereby pressing the relay wire 1 from the outside.

In addition, contact surfaces of the pair of plate-like members 30a and 30b according to the present embodiment with the relay wire 1 have an uneven structure. As a result, the mechanical stability of the holding state of the relay wire 1 is enhanced.

As described above, by providing the pressing member 30, when the cable 20 is inserted into the wire main body 10, the wire 21 at the tip of the cable 20 is pressed and fixed by the inner peripheral side surface of the wire main body 10. The cable 20 can be held within the wire body portion 10 in such a manner.

As a result, the mechanical stability of the cable 20 inside the wire body 10 can be ensured, and in addition, the contact area between the inner peripheral side surface of the wire body 10 and the cable 20 can be increased. Therefore, it is possible to ensure a good electrical connection state.

Incidentally, when the pressing member 30 is provided as in this embodiment, the cable 20 is fixed to the pressing member 30 . Therefore, a configuration in which the inner diameter of the hollow portion 10a in the wire body portion 10 gradually decreases from the opening portion 11 side toward the tip portion 12 side is not necessarily required.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications are conceivable.

For example, in the above-described embodiment, as an example of the terminal 100, the cable 20 (the relay wire 1 in the above-described embodiment) inserted into the cable insertion opening 110 is pressed and fixed from both sides in the vertical direction. rice field. However, the terminal 100 may be of any type as long as it is of a type that locks the cable 20 by inserting the cable 20 into the cable insertion opening 110 . For example, the terminal 100 may press and fix the cable 20 inserted into the cable insertion port 110 to the electrical connection member 120 using a bolt.

Moreover, in the above-described embodiment, as an example of the relay wire 1, a mode using a metal member having a braided structure formed of a plurality of metal wires is shown. However, the relay wire 1 (wire main body portion 10) may be in any form as long as it can be flexibly deformed.

Further, in the above-described embodiment, audio equipment is shown as an example of application of the relay wire 1 . However, the relay wire 1 according to the present invention can be applied to various devices other than audio equipment, such as robots.

Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

According to the relay wire according to the present disclosure, good electrical connection between the terminal and the cable is possible.

Reference Signs List 1 relay wire 10 wire main body 10a hollow portion 11 opening 12 tip portion 20 cable 21 wire 30 pressing member 30a, 30b plate member 100 terminal 100a housing 110 cable insertion port 120 electrical connection member 130 fixing member

Claims (8)

A relay wire that relays an electrical connection between a terminal and a cable for signal transmission,
an electric wire main body formed in a tubular shape by a metal member;
an opening formed at one end of the electric wire main body so as to allow the cable to be inserted so as to communicate with the electric wire main body;
a tip portion formed so as to be insertable into the cable insertion port of the terminal on the other end side of the wire main body,
The electric wire main body is
making electrical connection with the cable by contacting the wires of the cable inserted into the wire body through the opening;
The tip portion is inserted into the cable insertion port and pressed and fixed to an electrical connection member in the terminal to electrically connect with the terminal,
The metal member exhibits a braided structure formed by a plurality of metal wires,
relay wire. At least part of the tip portion is formed by bundling the plurality of metal wires by welding.
The relay electric wire according to claim 1 . The metal member is made of the same metal material as the wire of the cable,
The relay electric wire according to any one of claims 1 and 2 . The metal member is configured to contain a copper material,
The relay electric wire according to any one of claims 1 to 3 . The inner diameter of the wire body portion gradually decreases from the one end side toward the other end side,
The relay electric wire according to any one of claims 1 to 4 . The wire main body portion is arranged in a state of being pressed from the outside by a pressing member,
The wire body portion compresses and fixes the cable inside the wire body portion by pressing from the pressing member.
The relay electric wire according to any one of claims 1 to 5 . A contact surface of the pressing member with the electric wire main body has an uneven structure,
The relay electric wire according to claim 6 . The inner diameter of the opening is equal to or greater than the outer diameter of the cable,
The outer diameter of the tip portion is equal to or less than the inner diameter of the cable insertion port,
The relay electric wire according to any one of claims 1 to 7 .

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