JP2012186097A - Wiring material with connector terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a wiring material with a small-diameter connector terminal which is endurable against loads of a tensile force and a bending force applied to a wiring cable.SOLUTION: A core wire 14 of a wiring material 10 and a core wire of an auxiliary wire rod 20a or an auxiliary wire rod 20b are crimped to a wire barrel 44 of a connector terminal 40 together at a time, and the wiring material 10, the auxiliary wire rod 20a, and the auxiliary wire rod 20b are bundled in the vicinity of the connector terminal 40 using a heat-shrinkable tube 58 (binding member). This allows the loads of the tensile force and the bending force to be endurable while using a small-diameter wiring cable 34.

Description

  The present invention relates to a wiring material with connector terminals in which a connector is attached to a wiring material.

  Conventionally, a wiring cable for a back monitor camera mounted on a vehicle such as a passenger car has to be wired so as to sew a narrow gap formed in the vehicle body. Therefore, a thin wiring cable is preferred. The back monitor camera is often attached to the rear part of the vehicle, particularly near the tailgate or license plate, in order to secure the field of view to be monitored.

  The wiring cable for the back monitor camera extends from the rear of the vehicle body where the back monitor camera is mounted to the driver's seat dashboard where the car navigation system with a monitor screen is located, the tailgate hinges, the gap between the body steel plates, and the interior material. Wiring is done through a narrow gap on the back side. Depending on the vehicle model, there is a case of wiring over 10 m or more.

  Since the back monitor camera generally has low power consumption, a thin wiring cable can be used. However, as a connector for a back monitor camera in a car navigation system, a general-purpose connector for a relatively thick wiring material is used. If a wiring material having a corresponding core wire diameter is used for this connector, the wiring cable becomes too thick and wiring work becomes difficult. Therefore, conventionally, a thin wiring cable has been converted to a thick wiring material in order to fit the connector terminal.

  In FIG. 7, the top view of the wiring material with a connector terminal which performed the conventional wire diameter conversion is shown. The wiring material 950 with a connector terminal shown in FIG. 7 is converted from a thin wiring material 910 to a thick wiring material 920 at the connector portion.

  A wiring material 950 with a connector terminal shown in FIG. 7 includes a wiring cable 934 in which a plurality of thin wiring materials 910 are housed, a crimping terminal 926 that fastens a thick wiring material 920 at the tip of the thin wiring material 910, and a thick wiring material 920. A connector terminal 940 attached to the end portion and a connector housing 946 for holding a plurality of connector terminals 940 are provided.

  The thin wiring member 910 is constituted by a core wire 914 having a diameter smaller than the conductor diameter range permitted by the connector terminal 940 or an insulating coating 912 having a diameter smaller than the coating diameter range permitted by the connector terminal 940. Therefore, the wiring material cannot be directly attached to the connector terminal 940. Therefore, the wiring material 910 of the thin wiring cable 934 suitable for wiring is converted into a thick wiring material 920 in the vicinity of the connector housing 946. The core wire 924 of the thick wiring member 920 is a core wire within the conductor diameter range allowed by the connector terminal 940, and the insulation coating 922 is an insulation coating within the coating diameter range allowed by the connector terminal 940.

  In the portion where the thin wiring member 910 is converted to the thick wiring member 920, the core wires 914 and 924 of both the wiring members 910 and 920 are exposed, and after being inserted into the crimping terminal 926, crimping is performed by crimping together. Thereafter, the heat shrinkable tube 928 is covered so as to cover the vicinity of the crimping terminal 926, and is heated and shrunk by applying hot air. Although not shown in FIG. 7, the portion between the wiring cable 934 and the connector housing 946 may be covered or molded using a heat-shrinkable tube or a cord bushing attached to the connector.

  The general connector terminal 940 includes a wire barrel 944 for crimping a core wire 924 within a predetermined conductor diameter range, and an insulation barrel 942 for attaching an insulating coating 922 within a predetermined covering diameter range. The wire barrel 944 is a portion that is crimped to ensure electrical continuity with the core wire 924. The insulation barrel 942 is for coupling the insulating coating 922 and the connector terminal 940, and by effectively transmitting a tensile force between the insulating coating 922 and the connector terminal 940, a tensile force applied to the core wire 924 is applied. In addition to reducing the stress, the bending stress applied to the core wire 924 is reduced by increasing the bending rigidity between the insulating coating 922 and the connector terminal 940, thereby preventing the core wire 924 from being disconnected.

  Next, a crimping method for obtaining an appropriate crimping strength with respect to a wiring material having a small diameter that is equal to or less than the crimping compatibility range of the connector terminal will be described (for example, see Patent Document 1).

  The wiring material with a connector terminal described in FIG. 1 (d) of Patent Document 1 is shown in FIG. A wiring member with connector terminal 980 shown in FIG. 8 includes a connector terminal 970 having a wire barrel 974 for crimping a core wire within a predetermined conductor diameter range, an insulation barrel 972 for attaching a coating, and a connector terminal 970. Within the conductor diameter range allowed by the connector terminal 970 by twisting the thin wire member 960 having the core wire 964 smaller than the allowable conductor diameter range and the core wire 964 of the thin wire member 960. The auxiliary thin wire 966 and the end of the auxiliary thin wire 966 and the contraction tube 968 covering the insulating coating 962 of the thin wiring member 960 are provided.

  By using the configuration of the wiring material 980 with a connector terminal described in Patent Document 1, the connector terminal 970 can be reliably crimped to the small-diameter wiring material 960 by an extremely simple assembly method.

Japanese Patent Application Laid-Open No. 64-71090

  In the structure of the wiring material with connector terminal 950 shown in FIG. 7, there are portions where the insulation coating 912 and the insulation coating 922 are interrupted at both ends of the crimping terminal 926. As described above, since the insulation barrel 942 has the insulating coating 922 attached thereto, the tensile force of the insulating coating 922 can be directly transmitted to the connector terminal 940. However, since all the tensile force applied to the wiring member 910 is transmitted only by the core wire 914 or the core wire 924 at both end portions of the crimping terminal 926, the end portions of the crimping terminal 926, particularly the core wire 914 having a small conductor diameter. The possibility of disconnection at the portion increases.

  As described above, since the insulation barrel 942 has the insulating coating 922 attached thereto, the bending rigidity between the insulating coating 922 and the connector terminal 940 can be increased. However, at both end portions of the crimping terminal 926, there are portions where the insulating coating 912 and the insulating coating 922 are interrupted, so that the bending rigidity is lowered. Then, since it will be bent greatly in the both ends of the crimping terminal 926 with low bending rigidity, excessive bending stress will be added to the core wire 914 or 924 in the both ends of the crimping terminal 926, and the possibility of disconnection will become high.

  Further, by repeating the bending, a hole is opened in the heat shrinkable tube 928 by the sharp end of the crimping terminal 926, or the other end of the core wire 914 or the core wire 924 is exposed through the heat shrinkable tube 928. There is also the possibility of shorting in contact with the conductor.

  In order to solve these problems, the periphery of the wiring members 910 and 920 is molded, but as a result, the wiring cable 934 has a problem of high cost.

  Further, as the wire diameter is changed, the wiring material 920, the crimping terminal 926, the heat shrinkable tube 928, and a plurality of parts and processing corresponding to the different thicknesses are necessary, which also increases the cost of the wiring cable 934. It was.

  Further, in the wiring material 980 with a connector terminal shown in FIG. 8, since the insulation barrel 972 is attached to the heat shrinkable tube 968, when a tensile force is applied to the wiring material 960, A tensile force was applied to the core wire 964 and the insulation coating 962. Since the wiring member 960 is a thin wire, there is a problem that the core wire 964 is easily disconnected.

  Therefore, in view of such conventional circumstances, the present invention provides a wiring material with a connector terminal having a small diameter that can withstand the load of tensile force or bending force of a wiring cable at a low cost.

  The wiring material with a connector terminal of the present invention is a wiring material with a connector terminal comprising at least a wiring material, an auxiliary wire, and a connector terminal having a wire barrel, the core wire of the wiring material, and the core wire of the auxiliary wire material A bundling member that collectively press-bonds the wiring material and the auxiliary wire to the wire barrel, and collectively bundles the wiring material and the auxiliary wire with the insulation barrel. This is the main feature.

  Further, in the wiring material with connector terminals having a plurality of wiring materials, the plurality of auxiliary wire materials have different lengths.

  Further, the wiring material with connector terminal of the present invention is a wiring material with connector terminal comprising at least a wiring material and a connector terminal having a wire barrel, wherein a part of the core wire is covered in the intermediate portion of the wiring material. A bundling member that is exposed from, bent the exposed core wire, crimps the core wire to the wire barrel, and collectively covers the wiring material with the insulation barrel, and bundles the wiring material. It is characterized by having.

  In the wiring material with connector terminals having a plurality of wiring materials, the length from the connector terminal to the open end of the wiring material in the vicinity of the connector terminal is different from each other.

  With the above configuration, the core wire of the wiring material and the core wire of the auxiliary wire material are collectively crimped to the wire barrel, and the coating of the wiring material and the coating of the auxiliary wire material are collectively adhered to the insulation barrel. The wiring material and the auxiliary wire material can be bundled. As a result, the load applied to each wiring member can be reduced to withstand the load of tensile force and bending force.

  Moreover, in the wiring material with a connector terminal having a plurality of wiring materials, the plurality of auxiliary wires have different lengths, so that a short circuit due to contact with other core wires can be prevented.

  Further, the wiring material with connector terminal of the present invention, in the middle portion of the wiring material, a part of the core wire is exposed from the coating, the exposed core wire is bent, the core wire is crimped to the wire barrel, The covering of the wiring material is collectively adhered with the insulation barrel, and the wiring material is bundled. Thereby, the wiring material with a connector terminal which can endure the load of tensile force and bending force can be provided by a simple assembly procedure.

  Moreover, in the wiring material with a connector terminal having a plurality of wiring materials, the length from the connector terminal to the open end of the wiring material is different from each other, thereby preventing a short circuit due to contact with other core wires. be able to.

FIG. 1 is a plan view of an essential part of a wiring material with a connector terminal shown as an embodiment of the present invention. FIG. 2 is a plan view showing a state in which a part of the core wire is exposed in the wiring member and the auxiliary wire member. FIG. 3 is a plan view showing a state where a part of the core wire is exposed and bent at an intermediate portion of one wiring member. FIG. 4 is a plan view showing a state in which the wiring member and the auxiliary wire member or the wiring member are crimped and attached to the connector terminal. FIG. 5 is a plan view showing a state in which the connector terminals attached to the wiring material and the shield wire are inserted into the connector housing. FIG. 6 is a plan view showing a state in which the wiring material and the auxiliary wire material are twisted from the state shown in FIG. 1 and the heat-shrinkable tube is thermally contracted. FIG. 7 is a diagram illustrating a configuration example of a conventional wiring material with connector terminals, and is a plan view illustrating a configuration example in which a thin wiring material is converted into a thick wiring material. FIG. 8 is a diagram illustrating a configuration example of a conventional wiring material with a connector terminal, and is a plan view illustrating a configuration example in which an auxiliary fine wire is twisted on a thin core wire and crimped to a wire barrel.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of a main part of a wiring material with a connector terminal shown as an embodiment of the present invention.

  A wiring material 50 with a connector terminal shown in FIG. 1 includes a wiring cable 34 having a plurality of thin wiring materials 10 and a shielded wire material 52 and the like, and auxiliary wires 20a and 20b having one end of the wiring material as an open end. A connector terminal 40 to which the wiring member 10, the auxiliary wires 20a and 20b, and the shield wire 52 are respectively attached; a connector housing 46 that holds each connector terminal 40; and the wiring member 10 and the shield wire in the vicinity of the connector housing 46 52 and a heat-shrinkable tube 58 (one form of a binding member) for bundling the auxiliary wires 20a and 20b.

  On the insulation barrel 42 of the connector terminal 40, the wiring material 10 and the auxiliary wire material 20a, or the insulating coatings 12 of the wiring material 10 and the auxiliary wire material 20b are collectively attached. In addition, since the insulation coating of the shield wire 52 is thick, the shield wire 52 is attached to the insulation barrel 42 of the connector terminal 40 by itself.

  In the wire barrel 44 of the connector terminal 40, the core wire 14 is exposed in the wiring member 10 and the auxiliary wire member 20a, or the wiring member 10 and the auxiliary wire member 20b, and a plurality of the core wires 14 are pressed together. In addition, since the core wire of the shield wire 52 is thick, it is crimped to the wire barrel 44 of the connector terminal 40 alone.

  In the wiring material 50 with a connector terminal, a thin wiring cable 34 is used in order to easily perform wiring work using the wiring cable 34. Therefore, the core wire 14 of the wiring member 10 built in the wiring cable 34 is a core wire having a diameter smaller than the conductor diameter range permitted by the connector terminal 40.

  Therefore, in the present invention, the connector terminal 40 allows the wiring member 10 and the auxiliary wire member 20a or the core wires 14 of the wiring member 10 and the auxiliary wire member 20b to be bonded together and crimped to the wire barrel 44 of the connector terminal 40. The conductor diameter range. In addition, the wire material of the same wire diameter can also be used for the core wire diameter of the wiring material 10 and the auxiliary wire material 20a or 20b, and the wire material of a different wire diameter can also be used. Moreover, even if the core wire 14 of the wiring member 10 has a single conductor diameter suitable for the connector terminal 40, it may be within the conductor diameter suitable for the connector terminal 40 collectively with the core wire 14 of the auxiliary wire material 20.

  In addition, the wiring material 10 and the auxiliary wire material 20a or the insulating coatings 12 of the wiring material 10 and the auxiliary wire material 20b are collectively adhered to the insulation barrel 42 of the connector terminal 40, thereby providing an appropriate adhesion strength. It has gained. In the vicinity of the connector terminal 40, the plurality of wiring members 10 including the auxiliary wires 20 a and 20 b and the shield wires 52 are bundled using a heat shrinkable tube 58. Thereby, since the load added to the wiring material 10 can be disperse | distributed and the load added to one wiring material can be reduced, the possibility of the disconnection of the core wire 14 can be reduced.

  In the embodiment shown in FIG. 1, the lengths of the plurality of auxiliary wires 20a and 20b are different from each other. By doing so, even if the core wire 14 of the auxiliary wires 20a, 20b is exposed from the open end, a short circuit due to contact with another core wire 14 can be prevented.

  Next, the manufacturing process of the wiring material 50 with a connector terminal will be described with reference to FIGS. FIG. 2 is a plan view showing a state in which a part of the core wire 14 is exposed in the wiring member 10 and the auxiliary wire member 20. FIG. 3 is a plan view showing a state in which a part of the core wire 14 is exposed and bent at an intermediate portion of one wiring member 10. FIG. 4 is a plan view showing a state in which the wiring member 10 and the auxiliary wire member 20 are attached to the connector terminal 40. FIG. 5 is a plan view showing a state in which the connector terminal 40 attached to the wiring member 10 and the shield wire 52 housed in the wiring cable 34 is inserted into the connector housing 46. FIG. 6 is a plan view showing a state in which the wiring material 10, the auxiliary wires 20a and 20b, and the shield wire 52 are twisted from the state shown in FIG. In addition, about each member once demonstrated using drawing, the same number is attached | subjected in subsequent drawings, and the description is abbreviate | omitted.

  First, as shown in FIG. 2, the core wire 14 is exposed from the insulating coating 12 of the thin wiring member 10 housed in the wiring cable 34.

  Next, an auxiliary wire 20 having the same specifications as the wiring material 10 is prepared, cut to a predetermined length, and the core wire 14 is exposed from the insulating coating 12.

  Then, the core wires 14 of the wiring member 10 and the auxiliary wire member 20 are bundled together and crimped to the wire barrel 44 of the connector terminal 40 so that the conductor diameter range allowed by the connector terminal 40 is obtained. Alternatively, the core wire 14 of the wiring member 10 and the auxiliary wire member 20 may be twisted and then crimped to the wire barrel 44 of the connector terminal 40.

  FIG. 3 is a plan view for explaining another embodiment related to the combination of the wiring member 10 and the auxiliary wire member 20 shown in FIG. In FIG. 2, the embodiment in which the auxiliary wire 20 different from the wiring material 10 is collectively crimped has been described. On the other hand, in the embodiment shown in FIG. 3, the core wire 14 in the middle portion of one wiring member 10 is exposed from the insulating coating 12, and the exposed core wire 14 is bent. Note that the bent core wires 14 may be crimped to the wire barrel 44 of the connector terminal 40 after being twisted together.

  FIG. 4 shows a state in which the connector terminal 40 is crimped to FIG. 2 or FIG.

  In the embodiment shown in FIG. 4, the insulating agent 16 is applied to the open end of the insulating coating 12 and solidified. By sealing the open end of the insulating coating 12 using the insulating agent 16 in this manner, when the core wire 14 is exposed from the open end, the heat shrinkable tube 58 (see FIG. 1) is prevented from breaking through and jumping out. ing. For example, an epoxy adhesive can be used as the material of the insulating agent 16.

  Next, as shown in FIG. 5, the connector terminals 40 attached to all the wiring members 10 built in the wiring cable 34 and the connector terminals 40 attached to the shield wire 52 are inserted into the connector housing 46. From this state, when the heat-shrinkable tube 58 is passed between the wiring cable 34 and the connector housing 46, the wiring material 10, the auxiliary wire materials 20a, 20b, and the shield wire material 52 are exposed through the exposed portions. The state shown in FIG. 1 is obtained. Thereafter, hot air is applied to thermally contract the heat shrinkable tube 58 to bind the wiring members as shown in FIG.

  In the embodiment shown in FIG. 6, when the wiring members 10, the auxiliary wires 20 a and 20 b, and the shield wire 52 are bound using the heat shrinkable tube 58, the wiring members are twisted. This makes it possible to withstand stresses such as stronger tensile force and bending force. Further, in order to maintain the twisted state of the twisted wiring members and to receive the stress applied to the wiring members in the entire wiring cable 34, a heat shrinkable tube 58 having a thermoplastic adhesive on the inner surface is used. Then, each wiring material and the wiring cable 34 are fixed. In addition, it can replace with the heat contraction tube 58, and can also mold by resin. Moreover, a binding band, a crimping tool, and other binding members can also be used.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to embodiment mentioned above, In the range of the summary of this invention described in the claim, various deformation | transformation and change Is possible.

10, 910, 920, 960 Wiring material 12, 912, 922, 962 Insulation coating 14, 914, 924, 964 Core wire 16 Insulating agent 20, 20a, 20b Auxiliary wire material 34, 934 Wiring cable 40, 940, 970 Connector terminal 42, 942, 972 Insulation barrels 44, 944, 974 Wire barrel 46, 946 Connector housing 50, 950 Wiring material with connector terminal 52 Shielded wire (twisted and coated)
58 Heat Shrink Tube (Bundling Member)
926 Caulking terminal 928 Heat shrinkable tube 966 Auxiliary fine wire 968 Shrinkable tube 980 Wiring material with connector terminal

Claims (4)

Wiring materials, auxiliary wires,
A connector terminal having an insulation barrel and a wire barrel;
In the wiring material with a connector terminal comprising at least
The core wire of the wiring material and the core wire of the auxiliary wire material are collectively crimped to the wire barrel,
The coating of the wiring material and the coating of the auxiliary wire material are collectively adhered with the insulation barrel,
A wiring material with a connector terminal, comprising a bundling member for bundling the wiring material and the auxiliary wire.   2. The wiring material with connector terminals according to claim 1, wherein in the wiring material with connector terminals having a plurality of wiring materials, the plurality of auxiliary wire materials have different lengths. Wiring material,
A connector terminal having an insulation barrel and a wire barrel;
In the wiring material with a connector terminal comprising at least
In the middle part of the wiring member, a part of the core wire is exposed from the coating,
Bending the exposed core wire, crimping the core wire to the wire barrel,
The coating of the wiring material is collectively adhered with the insulation barrel,
A wiring material with connector terminals, comprising a bundling member for bundling the wiring materials.   The wiring material with connector terminals having a plurality of the wiring materials, wherein the lengths from the connector terminals to the open ends of the wiring materials in the vicinity of the connector terminals are different from each other. Wiring material with connector terminals as described.