JP2009151951A - Electric wire connection unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire connection unit which connects electric wires without carrying out a compression work. <P>SOLUTION: The electric wire connection unit is composed of an electric wire fixing part 3, a wedge 5, and a connector 4. The electric wire fixing part 3 is formed in nearly cylindrical shape, and a center hole 6 is installed penetrated in axial direction of the electric wire fixing part 3. The inner diameter of the center hole 6 is formed in a taper 7 shrinking from one end to the other end of the electric wire fixing part 3, and the outer circumference of one end of the larger diameter part side of the center hole 6 of the electric wire fixing part 3 has a screw thread capable of screwing to the connector 4. The wedge 5 is formed in cone shape capable of insertion into the center hole 6 of the electric wire fixing part 3, and the connector 4 is formed in cylindrical shape and has a partition wall at the center of a hollow hole, and a screw thread is cut to which one end of the electric wire fixing part 3 is capable of screwing, at the inner circumference both ends of the hollow hole. Accordingly, the electric wires 1 can be connected with a simple structure without requiring a compression work by a compression tool. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric wire connection body for connecting an electric wire and an electric wire, or connecting an electric wire and a terminal of an apparatus.

Conventionally, the structure using a cylindrical compression sleeve is known regarding the linear connection of an electric wire. Insert the stranded wire, which is the conductor of the wire to be connected, from both ends of the compression sleeve, and compress the compression sleeve and the stranded wire of the wire by compressing the compression sleeve from the outside with a compression tool such as a hydraulic type. Insulating tape is wound around each electric wire and both ends of the compression sleeve to insulate the electric wire and the electric wire.
Japanese Patent Application Laid-Open No. 2006-236783

  However, the weight of the hydraulic compression tool is heavy, the compression tool itself is about 40 kg, and the hydraulic pump used for the compression tool is about 20 kg, which is about 60 kg in total. Took a lot of hard work and needed a power source. In addition, when connecting at a place where a large tension is applied to the overhead wire, a long compression sleeve (about 50 cm) is used and a large number of places (many places) in order to have a structure that can withstand even if a strong tension is applied to the connecting portion. In this case, it was necessary to compress 30 points in one phase, which required a long work. Also, depending on the overhead wire connection work, it may be forced to connect on a steel tower with a height of about 10 m on which the overhead wire is stretched, and raising a 60 kg hydraulic compression tool to that height is It wasn't most work. Further, in the configuration using the compression sleeve, since the compression sleeve and the stranded wire of the electric wire are crimped and connected as described above, when the connection is released in order to change the power supply system, the connection portion is set using a cutter or the like. Had to cut.

  Therefore, the present invention provides an electric wire connecting body that connects an electric wire and an electric wire without performing compression by a compression tool, or connects an electric wire and a terminal of an apparatus.

In order to solve the above-mentioned problem, the invention of claim 1 is a connection body for connecting an electric wire and an electric wire,
An electric wire fixing portion that contacts a conductor made of a stranded wire of the electric wire and fixes the conductor inside, a wedge that is driven into the central portion in the axial direction of the conductor, and a connector that connects the two electric wire fixing portions of the electric wire to be connected And
The electric wire fixing portion is formed in a substantially cylindrical shape, and a center hole thereof is provided so as to penetrate in an axial direction of the electric wire fixing portion, and an inner diameter of the central hole extends from one end to the other end of the electric wire fixing portion. A tapered taper is formed, and an outer periphery of one end on the large diameter side of the center hole of the wire fixing part is cut with a screw that can be screwed to the connector,
The wedge is in the shape of a cone that can be inserted into the center hole of the wire fixing portion,
The connector forms a cylinder, and has a partition wall at the center of the hollow hole, and at both ends of the inner periphery of the hollow hole, a screw is cut so that one end of the wire fixing portion can be screwed. It was set as the electric wire connection body. The electric wires referred to in this specification include a wide variety of electric wires such as indoor wires and cables such as trunk cables in buildings and factories, and wires and cables such as overhead distribution wires.

According to a second aspect of the present invention, there is provided a connecting branch body in which one outer peripheral screw portion to which one end of the connector is screwed is provided at one end and a plurality of outer peripheral screw portions to which one end of the connector is screwed is provided at the other end. ,
The wire connector according to claim 1, wherein the connector is connected to the outer peripheral screw portion at one end, and the connector is connected to each of the outer peripheral screw portions at the other end.

Moreover, invention of Claim 3 is in the connection body which connects an electric wire and the terminal of an apparatus,
An electric wire fixing portion that comes into contact with a conductor formed of a stranded wire of the electric wire and fixes the conductor inside; a wedge that is driven into an axial central portion of the conductor; a connector that connects the terminal of the device and the electric wire fixing portion; Consisting of
The electric wire fixing portion is formed in a substantially cylindrical shape, and a center hole thereof is provided so as to penetrate in an axial direction of the electric wire fixing portion, and an inner diameter of the central hole extends from one end to the other end of the electric wire fixing portion. A tapered taper is formed, and an outer periphery of one end on the large diameter side of the center hole of the wire fixing part is cut with a screw that can be screwed to the connector,
The wedge is in the shape of a cone that can be inserted into the center hole of the wire fixing portion,
The connector has a terminal that can be fixed to the terminal of the device at one end, and the other end has a substantially cylindrical shape, and a screw at one end of the wire fixing portion can be screwed onto the inner periphery of the cylindrical portion. It was set as the electric wire connection body by which the inner peripheral screw was cut.

  Moreover, invention of Claim 4 is provided with the through-hole in which the strand wire of the center part of the said conductor of an electric wire can be inserted in the wedge at the center part of the axial direction in the said wedge. The electric wire connection body was used.

  According to the first to fourth aspects of the present invention, since the electric wire and the electric wire or the electric wire and the terminal of the device are connected using the electric wire fixing portion, the wedge, and the connector without using the electric compression tool, the power source Need not be secured. Moreover, it becomes possible to connect an electric wire etc. with a simple structure. In order to connect overhead and underground cables, it is easy to transport the connection tool to high places over 10 meters above the ground and narrow manholes. Further, since the electric wire or the like is connected without using a compression tool, the connecting portion does not become unnecessarily long. Since the compression work is unnecessary, the entire work time can be shortened. Furthermore, since the connection of the electric wire etc. is made by screwing the connector and the electric wire fixing part, it is possible to easily release the connection to change the power supply system and change the connection to another electric wire etc. It becomes. In addition, as the tension is applied to the electric wire, the wedge bites into the stranded wire of the electric wire and is difficult to come off.

  Further, according to the invention of claim 2, since the connector is provided with a connecting branch body provided with a single outer peripheral screw portion at one end and a plurality of outer peripheral screw portions at the other end between the connectors, One electric wire can be branched and connected to a plurality of electric wires.

  In particular, according to the invention of claim 3, since the electric wire fixing part is attached to the stranded wire of the electric wire, the connector is screwed to the electric wire fixing part, and the connector and the terminal of the device are connected. Compared with the case where the wire is directly connected to the terminal of the device, the reliability of the connection between the electric wire and the terminal of the device is increased, and the connection work can be easily performed.

  According to the invention of claim 4 in particular, since the through hole is provided at the center in the axial direction of the wedge, by inserting a part of the stranded wire that is a conductor of the electric wire into the through hole, The adhesion between the wedge and the conductor of the electric wire can be further increased, the connection strength is increased, and the electrical connection is further ensured.

  In a connecting body for connecting electric wires to each other, an electric wire fixing portion that contacts a conductor made of a stranded wire of the electric wire and fixes the conductor inside, a wedge that is driven into the axial center portion of the electric conductor, and an electric wire to be connected A connector for connecting the two electric wire fixing portions, and the electric wire fixing portion is formed in a substantially cylindrical shape, and its central hole is provided so as to penetrate in the axial direction of the electric wire fixing portion. The inner diameter forms a taper that tapers from one end to the other end of the wire fixing portion, and the outer periphery of one end of the wire fixing portion on the large diameter side of the central hole is cut by a screw that can be screwed to the connector. The wedge has a conical shape that can be inserted into the center hole of the wire fixing portion, the connector has a substantially cylindrical shape, and has a partition wall at the center of the hollow hole. Screws to which one end of the wire fixing part can be screwed are cut at both ends of the circumference. Been With Configurations, without requiring compression work by the crimping tool, it is possible to connect the wire and the wire with a simple structure.

  Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a partial cross-sectional front view showing the configuration of the wire connector A of the present embodiment. In this embodiment, one electric wire 1 and another electric wire 1 are connected in a straight line. The electric wire fixing portion 3 is attached to the stranded wire 2 of each electric wire 1, and the electric wire fixing portion 3 is screwed to the connector 4. The electric wire 1 and the electric wire 1 are connected by making it wear. Further, a wedge 5 is driven into the stranded wire 2 of each electric wire 1 from the large diameter side of the central hole 6 of the electric wire fixing portion 3 and is embedded in the stranded wire 2. The wire fixing portion 3, the connector 4 and the wedge 5 are preferably made of the same material as the stranded wire 2 of the wire 1. For example, if the material of the stranded wire 2 is copper, the material of the wire fixing portion 3 and the like is also made of copper. If the electric wire fixing part 3 and the like are made of the same material as the stranded wire 2, the value of the electric resistance hardly changes when a current is passed, which is convenient. The wire fixing portion 3 and the like are desirably made of the same material as the stranded wire 2 of the electric wire 1, but at least the material of the wire fixing portion 3 and the like may be a conductor such as metal.

  Next, FIG. 2 is an exploded cross-sectional front view showing the wire fixing portion 3, the wedge 5, and the connector 4, respectively. The electric wire fixing portion 3 is formed in a cylindrical shape, and the center hole 6 is provided so as to penetrate in the axial direction of the electric wire fixing portion 3, and the diameter of the central hole 6 is reduced from one end to the other end of the electric wire fixing portion 3. A taper 7 is formed, and a screw 8 that can be screwed to the connector 4 is cut on the outer periphery of one end, which is a large diameter portion of the center hole 6 of the electric wire fixing portion 3. For example, the inclination angle of the taper 7 of the center hole 6 is 1.5 degrees. The wedge 5 may be in the shape of a cone that can be inserted into the center hole 6 of the wire fixing portion 3 and may be conical, triangular, or quadrangular. Further, the wedge 5 is desirably provided with a through hole 9 through which a part of the stranded wire 2 of the electric wire 1 is inserted in the central portion in the axial direction, but may be configured without this through hole 9. Due to the presence of the through hole 9, when the wedge 5 is driven into the stranded wire 2 of the electric wire 1, a part of the stranded wire 2 is inserted into the through hole 9, thereby improving the adhesion between the stranded wire 2 and the wedge 5. As the strength increases, the electrical connection becomes more reliable. Further, the inclination angle of the taper 10 of the wedge 5 is, for example, 3 degrees, and it is desirable that the inclination angle is slightly larger than the inclination angle of the taper 7 of the center hole 6 of the wire fixing portion 3. The connector 4 has a cylindrical body, and has a partition wall 4a at the center of the hollow hole 11, and a screw 12 is cut at both inner peripheral ends of the hollow hole 11 so that one end of the wire fixing portion 3 can be screwed. ing.

  Next, the assembly procedure of the wire connector A will be described with reference to FIGS. 3 and 4 are partially sectional front views, respectively, and FIG. 5 is a front view. First, as shown in FIG. 3, the wire fixing portion 3 is inserted into the stranded wire 2 of the electric wire 1 from the small diameter portion side of the central hole 6, and the stranded wire 2 is inserted into the central hole 6 of the electric wire fixing portion 3. Next, as shown in FIG. 4, the wedge 5 is driven into the center portion of the stranded wire 2 from the large-diameter portion side of the central hole 6 of the electric wire fixing portion 3 using a hammer or the like, and the wedge 5 is placed inside the stranded wire 2. Embed. In this way, by driving the wedge 5 into the center of the stranded wire 2, the stranded wire 2 spreads and closely contacts the taper 7 of the center hole 6 of the wire fixing portion 3 as shown in FIG. The wire 2 and the wire fixing part 3 are integrated. Further, by integrating the stranded wire 2 and the electric wire fixing portion 3, a contact surface between the stranded wire 2 and the electric wire fixing portion 3 is ensured to withstand energization. Further, in this case, as shown in FIG. 4, the wedge 5 is provided with the through hole 9, and thus a part of the stranded wire 2 of the electric wire 1 is inserted through the through hole 9. In this manner, the screws 8 of the wire fixing portions 3 of the two electric wires 1 with the wire fixing portion 3 attached and the wedge 5 embedded in the stranded wire 2 are brought into contact with each other, as shown in FIG. Are screwed onto the screws 12 on both sides of the screw. In addition, since the direction in which the screw of the screw 12 on both sides is cut is different, the screws 12 on both sides can be removed or tightened simultaneously by simply rotating the connector 4.

  As described above, the electric wire connector A is the electric wire fixing portion 3, the wedge 5, and the connector 4 are conductors, and the electric wire fixing portion 3 comes into contact with the stranded wires 2 of both electric wires 1 as shown in FIG. Since the fixed portion 3 is screwed to the connector 4, current is conducted. Further, as the tension is applied to the electric wire 1, the wedge 5 bites into the stranded wire 2 of the electric wire 1 and is less likely to come off. Further, since the connector 5 is screwed into the electric wire fixing portion 3 after the wedge 5 is driven into the stranded wire 2 of the electric wire 1, the wedge 5 can be prevented from coming off.

  Next, a second embodiment of the present invention will be described. In the present embodiment, a further configuration is added to the wire connector of the first embodiment described above, and other configurations and effects are the same as those of the first embodiment.

  FIG. 6 is a partial cross-sectional front view showing the electric wire connection body B. As shown in FIG. 6, the electric wire connection body B is substantially centered and one screw 12 of one connector 4 can be screwed to one end. A connecting branch body 14 having an outer peripheral screw 13 and having two outer peripheral screws 13 to which the screws 12 of the two connectors 4 can be screwed is provided at the other end. In the present embodiment, the configuration of the connection branch body 14 having two outer peripheral screws 13 at the other end is described. However, the number of outer peripheral screws 13 at the other end of the connection branch body 14 is not limited, and three or four. But you can. The connecting branch body 14 is preferably made of the same material as the stranded wire 2 of the electric wire 1, but may be at least a conductor such as a metal.

  Between the connector 4 and the connector 4, a single outer peripheral screw 13 is provided at one end and a connecting branch body 14 having a plurality of outer peripheral screws 13 provided at the other end is interposed. It can be branched and connected.

  Next, a third embodiment of the present invention will be described. In the first and second embodiments, the configuration in which the electric wire 1 and the electric wire 1 are connected is shown, but in this embodiment, the configuration in which the terminal (not shown) of the device and the electric wire 1 are connected is shown.

  FIG. 7 is a partial cross-sectional front view showing the electric wire connection body C. As shown in FIG. 7, the connector 15 has a terminal 16 which can be fixed to a terminal of the device at one end and a cylindrical shape at the other end. An inner peripheral screw 17 into which the screw 8 of the electric wire fixing portion 3 can be screwed is cut on the inner periphery of the cylindrical portion.

  The terminal 16, which can be fixed to the terminal of the device, has a plate shape and a semicircular arc at the tip and is provided with a fitting hole 18 so that the terminal 16 can be easily fixed to the terminal of the device. The shape of the terminal 16 is not limited as long as it is easy to fix to the terminal of the device, and even if it is a clip of an alligator so as to be sandwiched between the terminals of the device, it is a rod shape that can be inserted into the terminal of the device. May be.

  With such a configuration, the reliability of the connection between the electric wire 1 and the terminal of the device is increased and the connection work is easily performed as compared with the case where the stranded wire 2 of the electric wire 1 is directly connected to the terminal of the device. Can do.

  Other configurations and effects of the present embodiment not described above are the same as those of the first embodiment.

  Further, as described above, since the wire fixing portion 3 and the connector 4 or the connector 15 are independent members, two wires can be connected by connecting the connectors, or a single wire can be branched and connected to a plurality of wires. It is possible to connect the electric wire and the terminal of the device. Further, since the connection between the connector 4 or 15 and the wire fixing portion 3 and the connection between the connection branch body 14 and the connector 4 are respectively screwed, they can be easily removed and are required by pulling out the wedge 5. Depending on the case, the electric wire 1, the electric wire fixing portion 3, the connector 4 and the like can be reused.

It is a partial cross section front view which shows the electric wire connection body A of Example 1 of this invention. It is the disassembled cross-sectional front view which each showed the electric wire fixing part, wedge, and connector of Example 1 of this invention. It is the partial cross section front view which showed the assembly procedure of the electric wire connection body A of Example 1 of this invention. It is the partial cross section front view which showed the assembly procedure of the electric wire connection body A of Example 1 of this invention. It is the front view which showed the assembly procedure of the electric wire connection body A of Example 1 of this invention. It is a partial cross section front view which shows the electric wire connection body B of Example 2 of this invention. It is a partial cross section front view which shows the electric wire connection body C of Example 3 of this invention.

Explanation of symbols

1 electric wire, 2 stranded wire, 3 electric wire fixing part, 4 connector,
4a partition wall, 5 wedge, 6 center hole, 7 taper, 8 screw, 9 through hole, 10 taper, 11 hollow hole, 12 screw, 13 outer peripheral screw, 14 connecting branch, 15 connector, 16 terminal, 17 inner peripheral screw, 18 Fitting hole

Claims (4)

In the connection body that connects the wires to each other,
A wire fixing portion that contacts a conductor made of a stranded wire of an electric wire to fix the conductor inside, a wedge that is driven into the central portion in the axial direction of the conductor, and a connector that connects the two wire fixing portions of the electric wire to be connected And
The electric wire fixing portion is formed in a substantially cylindrical shape, and a center hole thereof is provided so as to penetrate in an axial direction of the electric wire fixing portion, and an inner diameter of the central hole extends from one end to the other end of the electric wire fixing portion. A tapered taper is formed, and an outer periphery of one end on the large diameter side of the center hole of the wire fixing part is cut with a screw that can be screwed to the connector,
The wedge is in the shape of a cone that can be inserted into the center hole of the wire fixing portion,
The connector has a cylindrical body, and has a partition wall at the center of the hollow hole, and at both ends of the inner periphery of the hollow hole, a screw is cut so that one end of the wire fixing portion can be screwed. An electric wire connection body. One outer peripheral screw portion for screwing one end of the connector is provided at one end, and a connecting branch body provided with a plurality of outer peripheral screw portions for screwing one end of the connector at the other end is provided.
The wire connector according to claim 1, wherein the connector is connected to the outer peripheral screw portion at one end, and the connector is connected to each of the outer peripheral screw portions at the other end. In the connection body that connects the wire and the terminal of the device,
An electric wire fixing portion that comes into contact with a conductor formed of a stranded wire of the electric wire and fixes the conductor inside; a wedge that is driven into an axial central portion of the conductor; a connector that connects the terminal of the device and the electric wire fixing portion; Consisting of
The electric wire fixing portion is formed in a substantially cylindrical shape, and a center hole thereof is provided so as to penetrate in an axial direction of the electric wire fixing portion, and an inner diameter of the central hole extends from one end to the other end of the electric wire fixing portion. A tapered taper is formed, and an outer periphery of one end on the large diameter side of the central hole of the wire fixing part is cut with a screw that can be screwed to the connector,
The wedge is in the shape of a cone that can be inserted into the center hole of the wire fixing portion,
The connector has a terminal that can be fixed to the terminal of the device at one end, and the other end has a substantially cylindrical shape. A screw at one end of the wire fixing portion can be screwed onto the inner periphery of the cylindrical portion. An inner wire screw is cut, and the electric wire connection body.   The electric wire connection body according to claim 1, wherein the wedge is provided with a through-hole through which a stranded wire at a central portion of the conductor of the electric wire can be inserted at a central portion in an axial direction. .

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