JP2017201603A - Wiring module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect an electric wire with a wiring member made of a metal cylinder.SOLUTION: A wiring module 10 comprises: a wiring member 20 made of a metal cylinder and in which an annular portion is consecutive in an extension direction; and an electric wire 30 that has a core wire 32 and a coating part 34 formed around the core wire 32, and at whose end part an exposure core wire part 32a exposing the core wire 32 is formed. In a state where the exposure core wire part 32a is inserted in the end part of the wiring member 20 made of a metal cylinder, the end part of the wiring member 20 made of a metal cylinder is deformed by pressing so that its opening is made smaller, and connected with the exposure core wire part 32a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technology for connecting electrical components in a vehicle or the like.

  Patent Document 1 discloses a technique for forming a conductive member with a pipe material made of conductive metal. The conductive member has a conductive main body portion that extends in the longitudinal direction and forms a conductive path, and an insulating layer is laminated on the outer peripheral surface. Terminal portions that enable connection to the mating member are integrally formed at both ends of the conductive main body portion. The terminal portion is formed flat, and a connection hole is opened to allow connection with the electrode of the auxiliary battery or the terminal of the DC / DC converter.

Japanese Patent Laying-Open No. 2015-167097

  By the way, in the vehicle etc., the electric wire which formed the coating | coated part around the core wire is used abundantly. Moreover, the pipe material made of conductive metal is not easily bent depending on the material, thickness, thickness, and the like. In such a case, it is required to connect an electric wire to a pipe material made of conductive metal.

  Then, an object of this invention is to enable it to connect an electric wire easily to a metal cylinder wiring member.

  In order to solve the above-described problem, a wiring module according to a first aspect includes a metal tube wiring member having an annular portion continuous along an extending direction, a core wire, and a covering portion formed around the core wire. And an electric wire having an exposed core wire portion at which an exposed core wire is exposed at the end portion, and the exposed wire portion is inserted into the end portion of the metal tube wiring member in the state where the exposed metal wire portion is inserted. The end portion of the member is press-deformed so as to reduce its opening and is connected to the exposed core portion.

  A 2nd aspect is a wiring module which concerns on a 1st aspect, Comprising: The uneven | corrugated | grooved part is formed in the internal peripheral surface of the edge part of the said metal cylinder wiring member.

  A 3rd aspect is a wiring module which concerns on a 2nd aspect, Comprising: The spiral groove is formed as the said uneven | corrugated | grooved part in the internal peripheral surface of the edge part of the said metal cylinder wiring member.

  A 4th aspect is a wiring module which concerns on a 2nd or 3rd aspect, Comprising: The said core wire is made into the product made from aluminum or aluminum alloy.

  A fifth aspect is a wiring module according to any one of the first to fourth aspects, and is press-deformed so that a part of the outer periphery of the end portion of the metal tube wiring member is recessed. is there.

  A sixth aspect is a wiring module according to any one of the first to fifth aspects, and is a tubular member that covers an outer periphery of a connection portion between an end of the metal tube wiring member and the exposed core part. Is further provided.

  According to the wiring module according to the first aspect, with the exposed core portion inserted into the end portion of the metal tube wiring member, the end portion of the metal tube wiring member is press-deformed so that the opening becomes small. The metal tube wiring member and the electric wire can be easily connected.

  According to the second aspect, when the uneven portion is formed on the inner peripheral surface of the end portion of the metal tube wiring member, the uneven portion bites into the surface of the exposed core portion, and the metal tube wiring member and the electric wire Can be connected more reliably.

  According to the 3rd aspect, a spiral groove can be easily formed as an uneven | corrugated | grooved part in the internal peripheral surface of the edge part of a metal cylinder wiring member.

  According to the 4th aspect, the oxide film formed in the surface of a core wire can be destroyed by an uneven | corrugated | grooved part, and a metal cylinder wiring member and an electric wire can be connected more reliably.

  According to the fifth aspect, the press working is easy because the press deformation may be performed mainly so as to dent a part of the outer periphery of the end portion of the metal tube wiring member.

  According to the sixth aspect, the tubular member can suppress the entry of water into the connection portion between the end portion of the metal tube wiring member and the exposed core portion.

It is a partial schematic side view which shows the wiring module which concerns on embodiment. FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1. It is a perspective view which shows a metal cylinder wiring member. It is explanatory drawing which shows the example of a manufacturing method of a wiring module. It is explanatory drawing which shows the process of carrying out the press deformation of the edge part of metal cylinder wiring members. It is explanatory drawing which shows the process of carrying out the press deformation of the edge part of metal cylinder wiring members. It is explanatory drawing which shows the process of mounting | wearing a connection part with a tubular member. It is a partial schematic sectional drawing which shows the metal cylinder wiring member which concerns on a modification. It is a schematic sectional drawing which shows the state of the contact part of the internal peripheral surface of the metal cylinder wiring member which concerns on a modification, and an exposed core part. It is a partial schematic side view which shows the wiring module which concerns on another modification. It is a XI-XI line schematic sectional drawing of FIG. It is a partial schematic side view which shows the wiring module which concerns on another modification. It is the XIII-XIII line schematic sectional drawing of FIG.

  Hereinafter, the wiring module according to the embodiment will be described. 1 is a partial schematic side view showing a wiring module 10, and FIG. 2 is a schematic cross-sectional view taken along the line II-II of FIG.

  The wiring module 10 is a wiring member for connecting electrical components arranged at distant positions in a vehicle or the like, and includes a metal tube wiring member 20 and an electric wire 30. One end of the metal tube wiring member 20 and one end of the electric wire 30 are connected, thereby forming a conductive path for transmitting an electric signal or electric power. The other end of the electric wire 30 is connected to an electrical component via a terminal or the like. The other end of the metal tube wiring member 20 is directly connected to another electrical component, or another electrical wire is connected to the other electrical component via a terminal or the like connected to the other electrical wire. Connected to the part.

  As shown in FIGS. 1 to 3, the metal tube wiring member 20 is a member made of copper, copper alloy, aluminum, aluminum alloy or the like, and has a cylindrical shape in which an annular portion is continuous along the extending direction. Is formed. Here, the metal cylinder wiring member 20 is made of copper or a copper alloy. The metal cylinder wiring member 20 forms a part of a wiring path that connects electrical components that are installed apart from each other, and has a length dimension of, for example, 10 cm or more. For this reason, the metal cylinder wiring member 20 is different from a terminal simply connected to the end of the electric wire. As the metal tube wiring member 20, an extruded aluminum pipe or the like can be used. For this reason, the metal cylinder wiring member 20 is formed in a shape in which the annular portion is continuous over the entire extending direction. Also in this point, the terminal is simply different from the terminal connected to the end of the electric wire.

  Here, the cross-sectional shape orthogonal to the extending direction of the metal tube wiring member 20 is formed in a circular shape. If the cross-sectional shape of the metal tube wiring member 20 is circular, there is an advantage that it is easy to bend regardless of directionality. However, the metal cylinder wiring member may be an elliptic cylinder, a square cylinder, or the like.

  A coating portion 28 is formed on the outer periphery of the metal tube wiring member 20. The covering portion 28 is formed by covering the outer periphery of the metal tube wiring member 20 with a heat-shrinkable tube and heating it to heat shrink, or coating the outer periphery of the metal tube wiring member 20 with an insulating material or the like. The

  As shown in FIGS. 1 and 2, the electric wire 30 includes a core wire 32 and a covering portion 34.

  The core wire 32 is a metal linear member such as copper, copper alloy, aluminum, or aluminum alloy. Here, the core wire 32 will be described as being made of aluminum or aluminum alloy. The core wire 32 may have a configuration in which a plurality of strands 33 are twisted together, or may be configured by a single wire. Here, the core wire 32 has a configuration in which a plurality of strands 33 are twisted together. The covering portion 34 is an insulating member formed of resin or the like, and is formed so as to cover the core wire 32 by extrusion coating or the like.

  The covering portion 34 is removed at one end portion of the electric wire 30. Thereby, an exposed core wire portion 32 a where the core wire 32 is exposed is formed at the end portion of the electric wire 30.

  One end of the metal tube wiring member 20 and one end of the electric wire 30 are connected by the following configuration. That is, in the state where the exposed core portion 32a is inserted into one end portion of the metal tube wiring member 20, the one end portion of the metal tube wiring member 20 is made small so that the opening of the one end portion of the metal tube wiring member 20 is reduced. Has been press deformed. One end portion of the metal tube wiring member 20 is press-deformed so as to have an opening sufficiently small to be crimped to the exposed core portion 32a. Thereby, the one end part of the metal cylinder wiring member 20 is caulked and connected to the compressed exposed core part 32a. That is, one end portion of the metal tube wiring member 20 is mechanically connected so that the one end portion of the metal tube wiring member 20 and the exposed core wire portion 32a are not separated from each other by the force of tightening the exposed core wire portion 32a. In addition, one end of the metal tube wiring member 20 comes into contact with the outer peripheral portion of the exposed core wire portion 32a where the inner peripheral surface of the one end portion of the metal tube wiring member 20 is compressed by the force of tightening the exposed core wire portion 32a. The tubular wiring member 20 and the core wire 32 are also electrically connected.

  One end of the metal tube wiring member 20 is press-deformed so that a part of the outer periphery thereof is recessed. Here, a part of the outer periphery of the metal tube wiring member 20 is formed to be recessed in a square shape. More specifically, one end portion of the metal tube wiring member 20 is formed in a square shape as a whole, and a central portion of one side thereof is recessed inward. With such a shape, since only a part of the outer periphery of the metal tube wiring member 20 needs to be greatly deformed, the force required for press working can be reduced. Further, since the recessed portion partially enters the exposed core portion 32a and comes into contact with a relatively large area, the electrical and mechanical connection between the metal tube wiring member 20 and the exposed core portion 32a is further improved. Can be sure.

  The covering portion 28 is processed so as to be deformed together with the metal tube wiring member 20.

  The outer periphery of the connecting portion between the end portion of the metal tube wiring member 20 and the exposed core wire portion 32 a is covered with a tubular member 40. The tubular member 40 is a heat shrinkable tube. When the heat-shrinkable tube is heated and thermally contracted in a state where the heat-shrinkable tube before heat-shrinking is put on the outer periphery of the connection portion between the end of the metal tube wiring member 20 and the exposed core part 32a, the heat-shrinkable tube The heat shrinks until it becomes a shape corresponding to the outer shape of the connection portion between the end portion of the metal tube wiring member 20 and the exposed core portion 32a, and is closely attached to the outer periphery of the connection portion. Preferably, a sealant such as hot melt is provided inside the heat-shrinkable tube, and the sealant is connected to the outer periphery of the connection portion between the end of the metal tube wiring member 20 and the exposed core part 32a and the tubular member 40. Block between the two.

  An example of a method for manufacturing the wiring module 10 will be described.

  First, as shown in FIG. 4, a metal tube wiring member 20 and an electric wire 30 having an exposed core wire portion 32 a formed at the end are prepared, and the exposed core wire portion 32 a is inserted into the metal tube wiring member 20. . The end portion of the covering portion 34 may not be inserted into the metal tube wiring member 20 or may be inserted.

  Then, as shown in FIG. 5, the end portion of the metal tube wiring member 20 into which the exposed core wire portion 32 a is inserted is set in the crimping die 50. The crimping die 50 includes a lower die 52 and an upper die 56. The lower mold 52 is formed with a lower mold surface 53 that forms an inner peripheral surface of a rectangular groove that opens upward. The end portion of the metal tube wiring member 20 is supported in a mounted manner in the lower mold surface 53. The upper mold 56 is configured such that a rectangular parallelepiped protrusion 58 having a width smaller than the width of the lower mold surface 53 is formed at the center in the width direction of the base 57. With the end of the metal tube wiring member 20 disposed in the lower mold surface 53 of the lower mold 52, the rectangular parallelepiped protrusion 58 of the upper mold 56 is moved to the lower mold surface by an actuator such as an air cylinder or a hydraulic cylinder. It is lowered toward the lower mold surface 53 at the center position in the width direction of 53. Then, the end of the metal tube wiring member 20 is pressed against the lower mold surface 53, and the rectangular parallelepiped protrusion 58 is pressed onto the upper portion of the end of the metal tube wiring member 20.

  Accordingly, as shown in FIG. 6, the lower part and both side parts of the metal tube wiring member 20 are formed in a shape defined by the bottom surface and both side surfaces orthogonal to the bottom surface 53 according to the shape of the lower mold surface 53. Further, the central portion in the width direction of the upper part of the metal tube wiring member 20 is formed in a shape that is recessed in a rectangular parallelepiped shape according to the shape of the rectangular parallelepiped protrusion 58, and both side portions thereof are pressed by the lower surface of the base 57. It becomes a flat shape.

  The exposed core portion 32a in the end portion of the metal tube wiring member 20 is compressed and held in the end portion of the metal tube wiring member 20 while being compressed as the end portion of the metal tube wiring member 20 is press-deformed. Is done.

  Thereafter, as shown in FIG. 7, the heat-shrinkable tube 40B before heat shrinkage is put on the connection portion between the end portion of the wiring member 20 made of metal tube and the exposed core portion 32a of the electric wire 30, and this heat-shrinkable tube 40B is covered. Heated by a heater 46 or the like. Then, the heat-shrinkable tube 40B is heat-shrinked to become a tubular member 40 that covers the connection portion.

  In this way, the wiring module 10 is manufactured.

  According to the wiring module 10 configured as described above, the opening of the end portion of the metal tube wiring member 20 is made small in a state where the exposed core portion 32a is inserted into the end portion of the metal tube wiring member 20. By press-deforming, the end of the metal tube wiring member 20 is caulked and fixed to the exposed core portion 32a. For this reason, the metal cylinder wiring member 20 and the electric wire 30 can be easily connected.

  Further, since the wire 30 that is easier to bend than the metal tube wiring member 20 is connected to the end of the metal tube wiring member 20, the wire 30 is used when the wiring module 10 is assembled to a vehicle or the like. Can be bent and connected to electronic components. For this reason, it is excellent in assembling workability to the vehicle.

  In addition, since press deformation is performed so that a part of the outer periphery of the end portion of the metal tube wiring member 20 is recessed, press working can be easily performed with a relatively small force.

  Moreover, since the outer periphery of the connection part of the edge part of the metal cylinder wiring member 20 and the exposed core part 32a is covered with the tubular member 40, the approach of the water to the connection part, etc. can be suppressed. In particular, when the metal tube wiring member 20 and the core wire 32 are formed of different metals, it is possible to suppress different metal contact corrosion by suppressing the ingress of water.

  Based on the above embodiment, various modifications will be described.

  First, in the modification shown in FIG. 8, the spiral groove 122 is formed as an uneven portion on the inner peripheral surface of the end portion of the metal tube wiring member 120 corresponding to the metal tube wiring member 20. The spiral groove 122 is obtained by forming a groove in a spiral shape on the initial inner peripheral surface of the metal tube wiring member 120 by cutting or the like. The spiral groove 122 can be easily formed using a tap or the like for forming a thread groove.

  In addition, if the initial inner peripheral surface of the metal tube wiring member 120 is scraped to form a concave portion, the other portions are relatively convex portions. Moreover, if another part is added to the original inner peripheral surface of the metal cylinder wiring member 120 by welding or the like, the additional part becomes a convex part, and the other part becomes a concave part relatively. For this reason, the inner peripheral surface of the metal tube wiring member 120 is formed even when a concave portion is formed or a convex portion is formed on the initial inner peripheral surface of the metal tube wiring member 120. It can be said that the concavo-convex part is formed in.

  In this modification, the exposed core portion 32a is inserted into the end portion of the metal tube wiring member 120, and the end portion is caulked and fixed to the exposed core portion 32a. At this time, as shown in FIG. 9, since the spiral groove 122 is formed on the initial inner peripheral surface of the metal tube wiring member 120, the portion between the spiral grooves 122 on the inner peripheral surface is the exposed core portion. The exposed core wire portion 32a bites into the spiral groove 122 while biting into the surface of 32a. For this reason, the edge part of the metal cylinder wiring member 120 and the exposed core part 32a are fixed more firmly. Further, the contact area between the end portion of the metal tube wiring member 120 and the exposed core portion 32a is increased, and the electrical resistance between them is also reduced. For this reason, the metal cylinder wiring member 20 and the electric wire 30 can be more reliably connected.

  Moreover, when the exposed core part 32a is made of aluminum or aluminum alloy, the oxide film formed on the surface of the exposed core part 32a can be destroyed by the spiral groove 122. Thereby, the edge part of the metal cylinder wiring member 120 and the exposed core part 32a can be electrically connected more reliably.

  The spiral groove 122 can be easily formed on the inner peripheral surface of the metal tube wiring member 120.

  The uneven | corrugated | grooved part formed in the internal peripheral surface of a metal cylinder wiring member is not restricted to the said example. For example, the groove | channel formed along the extension direction in the internal peripheral surface of a metal cylinder wiring member may be sufficient.

  Further, like the wiring module 210 according to the modification shown in FIGS. 10 and 11, the intermediate portion 222 in the extending direction of the metal tube wiring member 220 may be processed so as to be different from other portions. Here, the extending direction intermediate portion 222 of the metal tube wiring member 220 is pressed so as to have a flat shape. By processing the intermediate portion 222 into a flat shape, for example, the intermediate portion of the metal tube wiring member 220 can be easily disposed in a narrow space of the vehicle. Even if the intermediate portion 222 in the extending direction of the metal tube wiring member 220 is pressed so as to have a flat shape, the inner surfaces of the intermediate portion 222 are not joined to each other and are separable. It can be said that the annular part which became flat also in the part is continuing.

  In the wiring module 310 according to the modification shown in FIGS. 12 and 13, the end of the metal tube wiring member 320 is flat in a hexagonal shape at the connection portion between the end of the metal tube wiring member 320 and the exposed core portion 32 a. Press working. Further, the press-worked portion 323 of the metal tube wiring member 320 extends not only to the portion to which the exposed core portion 32 a is connected, but also to the intermediate portion in the extending direction of the metal tube wiring member 320.

  This modification is effective when the connecting portion between the metal tube wiring member 320 and the electric wire 30 is disposed in a flat space, particularly a flat hexagonal space. Further, since the flat hexagonal press-formed portion 323 is formed so as to extend from the end of the metal tube wiring member 320 to the intermediate portion in the extending direction thereof, the flat space has a metal tube wiring member 320. This is also effective in the case where the metal tube wiring member 220 extends from the connecting portion between the wire 30 and the electric wire 30 to the middle.

  That is, in this modification, it is effective to press the connection portion between the end portion of the metal tube wiring member 320 and the exposed core portion 32a into a shape that matches the space in which the connection portion is disposed. And, according to the convenience of the space, the pressed portion is formed so as to extend from the end portion of the metal tube wiring member 320 to the intermediate portion in the extending direction, and in some cases, to the opposite end portion. Is also effective.

  In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts. For example, the press shape shown in FIG. 2 is applied to one end of the metal tube wiring member to connect the wires, and the other end of the metal tube wiring member is applied to the press shape shown in FIG. It may be connected.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

10, 210, 310 Wiring module 20, 120, 220, 320 Metal tube wiring member 28 Covering portion 30 Electric wire 32 Core wire 32a Exposed core wire portion 34 Covering portion 40 Tubular member 122 Spiral groove

Claims (6)

A metal cylinder-made wiring member in which the annular portion is continuous along the extending direction;
An electric wire having a core wire and a covering portion formed around the core wire, and an exposed core wire portion where the core wire is exposed at an end; and
With
In a state where the exposed core wire portion is inserted into the end portion of the metal tube wiring member, the end portion of the metal tube wiring member is press-deformed so as to reduce its opening and connected to the exposed core wire portion. Wiring module in state. The wiring module according to claim 1,
A wiring module in which an uneven portion is formed on an inner peripheral surface of an end portion of the metal tube wiring member. The wiring module according to claim 2,
A wiring module in which a spiral groove is formed as the concavo-convex portion on an inner peripheral surface of an end portion of the metal tube wiring member. The wiring module according to claim 2 or 3, wherein
The core wire is a wiring module made of aluminum or aluminum alloy. The wiring module according to any one of claims 1 to 4, wherein
A wiring module that is press-deformed so that a part of the outer periphery of the end portion of the metal tube wiring member is recessed. The wiring module according to any one of claims 1 to 5, wherein
A wiring module further comprising a tubular member that covers an outer periphery of a connection portion between an end portion of the metal tube wiring member and the exposed core portion.

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