JP2016051625A - Method of manufacturing electric wire with connector and electric wire with connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more simply seal liquid such as water which may infiltrate into a connection portion between a connector and an electric wire through the electric wire in the electric wire with the connector.SOLUTION: A method of manufacturing an electric wire with a connector includes the steps of: (a) winding a coating member 4 so as to cover around a portion from an electric wire 2 to a connector 3 in the electric wire 2 and a connector 3 connected to the end of the electric wire 2; (b) filling a space 40 with resin by supplying fluid resin to the space 40 formed in the inside of the coating member 4 wound around the portion from the electric wire 2 to the connector 3; and (c) hardening the fluid resin in the inside the coating member 4.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an electric wire with a connector including an electric wire and a connector connected to an end portion of the electric wire, and a manufacturing method thereof.

  In a wire harness mounted on a vehicle such as an automobile, an electric wire with a connector includes an electric wire and a connector connected to an end thereof.

  Moreover, in the electric wire with a connector, for example, as shown in Patent Document 1, a waterproof structure that prevents liquid such as water from entering the gap between the electric wire and the connector connected to the end of the electric wire may be employed. . The electric wire with a connector shown in Patent Document 1 is wound with an ultraviolet curable adhesive tape having a two-layer structure of a base made of a tape-shaped ultraviolet curable resin and an adhesive, with the adhesive inside on a portion extending from the connector to the electric wire. And a cured coating member.

  Patent Document 1 shows a case where a sealing agent is formed to fill a gap between an electric wire and a connector connected to the end of the electric wire and a gap between the electric wires before the ultraviolet curable adhesive tape is wound. ing.

JP 2013-187004 A

  By the way, a liquid such as water may enter through the outer peripheral surface of the electric wire. For example, in the example shown in Patent Document 1, there is a risk that a liquid such as water may enter the connection portion between the connector and the electric wire due to a capillary phenomenon or the like. In order to suppress liquid intrusion more reliably, it is necessary to cure the fluid sealant in a state where it is retained so as to sufficiently fill the gap between the electric wire and the connector and the gap between the electric wires. In this case, it is necessary to retain the fluid sealant so as to sufficiently fill the gaps between the wires, and to cure the fluid sealant while maintaining the state, which complicates the work. There is a concern to do.

  An object of the present invention is to more easily seal a liquid such as water that may enter a connecting portion between a connector and an electric wire through the electric wire in the electric wire with a connector.

  The method for manufacturing a wire with connector according to the first aspect includes a step of winding a covering member so as to cover a periphery of a portion extending from the wire to the connector in the connector connected to the end of the wire and the wire; Supplying a fluid resin to a space formed inside the covering member wound around a portion extending from the electric wire to the connector, and filling the space with the fluid resin (b); And (c) curing the fluid resin inside the member.

  The electric wire manufacturing method with a connector concerning the 2nd mode is one mode of an electric wire manufacturing method with a connector concerning the 1st mode. In the electric wire manufacturing method with a connector according to the second aspect, in the step (b), a pin-shaped hollow tube penetrating from the outer surface to the inner surface of the covering member is inserted into the space inside the covering member. And supplying the fluid resin.

  The electric wire with a connector according to the third aspect is supplied to the electric wire, the connector connected to the end of the electric wire, the covering member covering the periphery of the portion extending from the electric wire to the connector, and the space inside the covering member And a filler obtained by curing the fluid resin filling the space.

  In each of the above aspects, the fluid resin is supplied to the space inside the covering member that covers the portion extending from the electric wire to the connector, and fills the space. The filler is a member formed by curing this resin. In this case, the gap in the space inside the coating member can be filled with the fluid resin by a simple operation of supplying the fluid resin to the inside of the coating member wound around the electric wire and the connector. Further, in this case, it is possible to prevent the fluid resin supplied to the inside of the covering member from leaking. That is, the state in which the fluid resin stays in the gap in the space inside the covering member is easily maintained. And the electric wire with a connector provided with the filler which fills the clearance gap of the space inside a coating | coated member can be easily obtained by hardening the fluid resin inside a coating | coated member.

  In addition, in the first aspect, the method of manufacturing the electric wire with connector includes a step (a) of winding the covering member so as to cover a periphery of a portion extending from the electric wire to the connector in the electric wire and the connector connected to the end of the electric wire, Supplying a fluid resin to a space formed inside the covering member wound around a portion extending from the connector to the connector, and filling the space with the fluid resin; and a fluid state inside the covering member And (c) curing the resin. In this case, after winding the covering member, by supplying the resin to the inside of the covering member, the gap in the space inside the covering member is filled without the resin leaking. And the electric wire with a connector provided with the filler which block | closes the clearance gap of the space inside a coating | coated member can be simply obtained by hardening this resin.

  Further, in the second aspect, the step (b) is a step of supplying a fluid resin to a space inside the covering member through a pin-shaped hollow tube penetrating from the outer surface to the inner surface of the covering member. is there. In this case, the resin can be supplied to the space inside the covering member by inserting the tip of the pin-shaped hollow tube inside the covering member wound around the portion extending from the electric wire to the connector. That is, in the step (b), there is no need to provide a portion for supplying the resin inside the covering member, and the workability of the covering member winding work is improved.

  In the third aspect, the electric wire with connector is supplied to the space inside the covering member, the covering member covering the periphery of the portion extending from the electric wire, the connector connected to the end portion of the electric wire, and the connector. And a filler obtained by curing a fluid resin filling. In this case, in the electric wire with a connector, it becomes possible to more easily seal a liquid such as water that may enter the connecting portion between the connector and the electric wire through the electric wire.

It is a side view of an electric wire with a connector. It is a partially cutaway side view of an electric wire with a connector. It is the figure which showed the 1st process in the electric wire manufacturing method with a connector. It is the figure which showed the 2nd process in the electric wire manufacturing method with a connector. It is the figure which showed the 2nd process in the electric wire manufacturing method with a connector. It is the figure which showed the 3rd process in the electric wire manufacturing method with a connector.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

  First, the electric wire 1 with a connector will be described with reference to FIGS. The electric wire with connector 1 includes an electric wire 2, a connector 3, a covering member 4, and a filler 5. The electric wire with connector 1 is mounted on a vehicle such as an automobile.

  FIG. 1 is a side view of the electric wire 1 with a connector. FIG. 2 is a partially cutaway side view of the connector-attached electric wire 1. In FIG. 2, the insides of the connector 3 and the covering member 4 are notched.

<Electric wire with connector: Electric wire>
The electric wire with connector 1 includes an electric wire 2. As shown in FIG. 1, the connector-attached electric wire 1 includes a plurality of electric wires 2 in the present embodiment. However, there may be a case where the number of the electric wires 2 included in the electric wire with connector 1 is one.

  In the present embodiment, the electric wire 2 is an insulated wire having a core wire and an insulating coating covering the periphery thereof. A core wire is a wire which has metals, such as copper or aluminum, as a main component, for example. The insulating coating is, for example, a synthetic resin member mainly composed of polyethylene, vinyl chloride, polyamide-based nylon, or the like.

  In the present embodiment, the terminal 20 is connected to the end of the electric wire 2. That is, as shown in FIGS. 1 and 2, the electric wire 2 is connected to the connector 3 via the terminal 20.

  For example, the case where the terminal 20 is connected to the end portion of the electric wire 2 by crimping can be considered. Moreover, the case where the terminal 20 is connected to the electric wire 2 by ultrasonic welding or heat welding is also considered.

<Wire with connector: Connector>
The connector 3 is connected to the end of the electric wire 2. In the present embodiment, the connector 3 is formed with a cavity 31 in which each of the plurality of electric wires 2 is accommodated. The electric wire 2 and the connector 3 are connected in a state where the electric wire 2 is accommodated in the cavity 31. In the present embodiment, the terminal 20 connected to the end of the electric wire 2 is accommodated in the cavity 31 of the connector 3, and the electric wire 2 and the connector 3 are connected. That is, in this embodiment, the connector 3 is connected to the end of the electric wire 2 via the terminal 20 of the electric wire 2 including the terminal 20.

  The connector 3 is made of an insulating resin material such as polybutylene terephthalate (PBT) or ABS resin. Further, it is conceivable that the connector 3 includes a holding structure that fixes the terminal 20 in the cavity 31. In FIGS. 1 and 2 and FIGS. 3 to 6, the holding structure of the connector 3 is omitted.

<Electric wire with connector: Cover member>
The covering member 4 covers a portion extending from the electric wire 2 to the connector 3. In the present embodiment, the covering member 4 is a tape-like member wound around a portion extending from the electric wire 2 to the connector 3. In the present embodiment, the covering member 4 collectively covers portions extending from the plurality of electric wires 2 to the connector 3.

  The covering member 4 is wound around the electric wire 2 and the connector 3 before the filler 5 described later is provided. At this time, a hollow space 40 is formed inside the covering member 4. Incidentally, the filler 5 is provided in a hollow space 40 inside the covering member 4. That is, in the state before the filler 5 is provided, the space 40 inside the covering member 4 is a cavity.

  The covering member 4 is considered to be a tape-shaped member whose main component is a resin such as a synthetic resin. In the present embodiment, it is conceivable that an adhesive layer is formed on one surface of the covering member 4. The adhesive layer is considered to be a layer of an adhesive such as an acrylic adhesive, a rubber adhesive, or a silicone adhesive. Then, the covering member 4 is wound around the electric wire 2 and the connector 3 with the adhesive layer in the covering member 4 on the inner side, that is, the electric wire 2 and the connector 3 side.

<Electric wire with connector: Filler>
The filler 5 is a member in which the fluid resin that is supplied to the space 40 inside the covering member 4 and fills the space 40 is cured.

  In this embodiment, the fluid resin that forms the filler 5 is a fluid resin that can fill the gaps between the plurality of electric wires 2 in the space 40 inside the covering member 4. In the connector-attached electric wire 1 of the present embodiment, gaps between the plurality of electric wires 2 are filled with the filler 5 formed by curing the resin.

  Further, the resin forming the filler 5 is preferably a resin having a relatively low viscosity that can reach the gap between the electric wire 2 and the connector 3 existing inside the covering member 4. This is because the water stop performance of the connector-attached electric wire 1 is further enhanced if the fluid resin penetrates to every corner of the space 40 inside the covering member 4.

  As the fluid resin forming the filler 5, a thermosetting resin, an ultraviolet curable resin, or the like can be considered. For example, the fluid resin forming the filler 5 may be a synthetic resin such as a urethane resin or an acrylic resin.

<Electric wire with connector>
The electric wire 1 with a connector is mounted on a vehicle such as an automobile. In this embodiment, the electric wire with connector 1 includes an electric wire 2, a connector 3, a covering member 4, and a filler 5. The resin is supplied to the space 40 inside the covering member 4 that covers the portion extending from the electric wire 2 to the connector 3, and fills the space 40. The filler 5 is a member formed by curing the resin. In this case, liquid such as water that may enter the connecting portion between the connector 3 and the electric wire 2 along the outer peripheral surface of the electric wire 2 can be stopped more easily.

  When the electric wire with connector 1 includes a plurality of electric wires 2, as shown in the examples shown in FIGS. 1 and 2, a capillary phenomenon is applied to the connector 3 connected to the tips of the plurality of electric wires 2 facing upward in the vertical direction. The liquid may enter. In the present embodiment, the resin filling the gaps of the plurality of electric wires 2 inside the covering member 4 is cured to form the filler 5, whereby the gaps of the plurality of electric wires 2 can be filled. That is, it is possible to prevent liquid from entering the connecting portion between the electric wire 2 and the connector 3 due to capillary action.

<Manufacturing method of electric wire with connector>
Next, a method for manufacturing a connector-attached electric wire, which is a method for manufacturing the connector-attached electric wire 1, will be described with reference to FIGS. In this embodiment, the electric wire manufacturing method with a connector includes a first step, a second step, and a third step. The first step is a step of winding the covering member 4 so as to cover the periphery of a portion extending from the electric wire 2 to the connector in the electric wire 2 and the connector 3 connected to the end of the electric wire 2. The second step is a step of supplying the fluid resin to the space 40 formed inside the covering member 4 wound around the portion extending from the electric wire 2 to the connector 3 and filling the space 40 with the fluid resin. . The third step is a step of curing the fluid resin inside the covering member 4.

  FIG. 3 is a diagram showing the state of the first step. 4 and 5 are diagrams showing the state of the second step. FIG. 6 is a diagram showing the state of the third step.

<Method for manufacturing electric wire with connector: first step>
Before the start of the first step, an operation of connecting the connector 3 to the end of the electric wire 2 is performed. In this embodiment, the connection operation | work with the some electric wire 2 and the connector 3 is performed before a 1st process. In the first step, the covering member 4 is wound so as to cover the periphery of the portion extending from the electric wire 2 to the connector 3. In this embodiment, in the connector 3 connected to the ends of the plurality of electric wires 2 and the plurality of electric wires 2, the covering member 4 is wound so as to collectively cover the periphery from the plurality of electric wires 2 to the connector 3. .

  In the present embodiment, the covering member 4 is a tape-shaped member. It is conceivable that the covering member 4 has an adhesive layer formed on one surface side. Further, it is conceivable that the covering member 4 is wound around the electric wire 2 and the connector 3 with the adhesive layer of the covering member 4 on the inside.

  In the first step, a hollow space 40 is formed inside the covering member 4 wound around the electric wire 2 and the connector 3. Resin is supplied to this space 40 in the second step described later.

<Method of manufacturing electric wire with connector: second step>
In the present embodiment, the second step is performed after the first step. In the second step, resin is supplied to the space 40 formed inside the covering member 4 wound around the portion extending from the electric wire 2 to the connector 3, and the space 40 is filled with the resin.

  In the second step, fluid resin is supplied to the hollow space 40 inside the covering member 4. Thereby, the space 40 is filled with fluid resin.

  Further, in the first step, when the covering member 4 is overlapped and wound so as not to form a gap, it is relatively viscous as a fluid resin supplied to the space 40 inside the covering member 4 in the second step. It is possible to employ a resin having a low value. The resin having a relatively low viscosity is likely to reach the gaps between the plurality of electric wires 2 and the connector 3 existing in the space 40 inside the covering member 4.

  Further, in the first step, it is also conceivable that the covering member 4 is wound around the electric wire 2 and the connector 3 with a slight gap formed in the overlapping portion of the covering member 4. In this case, it is conceivable that the fluid resin supplied in the second step is a resin having a viscosity capable of filling a gap in the overlapping portion of the covering member 4.

  Further, in the present embodiment, the second step is a fluid resin through the pin-shaped hollow tube 9 penetrating from the outer surface 41 to the inner surface 42 of the covering member 4 in the space 40 inside the covering member 4. Is a step of supplying

  In the present embodiment, in the second step, the pin-shaped hollow tube 9 such as an injection needle is pierced so as to penetrate from the outer surface 41 to the inner surface 42 of the covering member 4. That is, in this embodiment, the hollow tube 9 is pierced into the covering member 4 so that the tip of the hollow tube 9 exists inside the covering member 4. Then, the resin is supplied through the hollow tube 9 with the hollow tube 9 pierced. In this case, there is no need to provide a portion for supplying the resin to the inside of the covering member 4, such as a hole. Therefore, the workability of the winding work of the covering member 4 is improved.

  Moreover, the case where the front-end | tip of the hollow tube 9 is inserted inside the coating | coated member 4 from between the overlapping parts of the coating | coated member 4 is also considered. Also in this case, it is not necessary to provide a portion for supplying the resin inside the covering member 4, and the workability of the winding operation of the covering member 4 is improved.

<Method for manufacturing electric wire with connector: third step>
In the present embodiment, the third step is performed after the second step. The third step is a step of curing the fluid resin in the space 40 inside the covering member 4. And the filler 5 is formed when this resin hardens | cures. That is, the third step is a step of forming the filler 5 by curing the fluid resin inside the covering member 4.

  For example, when the resin constituting the filler 5 is a thermosetting resin, it is considered that a heating operation is performed in the third step. Moreover, when the resin which comprises the filler 5 is an ultraviolet curable resin, it is possible that an ultraviolet irradiation operation | work is performed in a 3rd process. It is also conceivable that the covering member 4 is a transparent tape-like member.

  In the connector-attached electric wire 1 obtained through the first step, the second step, and the third step, a liquid such as water that may enter the connecting portion between the connector 3 and the electric wire 2 through the electric wire 2, It becomes possible to seal more easily. In this embodiment, the space 40 is formed inside the covering member 4 by providing the covering member 4 first. Then, by supplying and curing the fluid resin in the space 40, the filler 5 that fills the gap formed in the space 40 inside the covering member 4 can be provided more easily. Further, in the example shown in FIG. 6, a part of the filler 5 extends from the end on the opposite side to the end on the connector 3 side of the covering member 4. However, a case where the entire filler 5 is provided inside the covering member 4 is also conceivable.

  Further, in this embodiment, by supplying a resin having a relatively low viscosity, a smaller gap between the plurality of electric wires 2 can be filled with the resin. Smaller gaps can be filled with the filler 5.

  Moreover, in this embodiment, since resin is supplied to the space 40 surrounded by the covering member 4, it can suppress that this resin leaks. That is, it is easy to retain the fluid resin in the gap in the space 40 inside the covering member 4. Therefore, in this embodiment, the operation of curing this resin can be performed more easily.

<Application example>
In the second step, it is also conceivable that the resin is supplied to the space 40 inside the covering member 4 from the end of the covering member 4 on the electric wire 2 side or the end on the connector 3 side.

  Moreover, preliminary resin may be apply | coated to the connector 3 connected to the edge part of the electric wire 2 and the electric wire 2 before the start of a 1st process.

  In addition, the electric wire with a connector and the electric wire with a connector according to the present invention can be freely combined within the scope of the invention described in each claim, or the embodiments and application examples described above can be freely combined. It is also possible to configure the application example by appropriately modifying or omitting a part thereof.

DESCRIPTION OF SYMBOLS 1 Electric wire with connector 2 Electric wire 3 Connector 4 Cover member 40 Space 41 Outer side surface 42 Inner side surface 5 Filler 9 Hollow tube

Claims (3)

(A) In the connector connected to the electric wire and the end of the electric wire, a step of winding the covering member so as to cover the periphery of the portion extending from the electric wire to the connector;
(B) supplying a fluid resin to a space formed inside the covering member wound around a portion extending from the electric wire to the connector, and filling the space with the fluid resin;
(C) curing the fluid resin inside the covering member;
An electric wire manufacturing method with a connector. It is a manufacturing method of the electric wire with a connector according to claim 1,
The step (b) is a step of supplying the fluid resin to the space inside the covering member through a pin-shaped hollow tube penetrating from the outer surface to the inner surface of the covering member. Electric wire manufacturing method with connector. Electric wires,
A connector connected to an end of the electric wire;
A covering member covering the periphery of a portion extending from the electric wire to the connector;
An electric wire with a connector, comprising: a filler that is supplied to a space inside the covering member and is cured by a fluid resin that fills the space.

Images