JP2012169121A - Electric wire with terminal fitting and terminal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire with a terminal fitting and a terminal fitting, capable of preventing displacement of a water stop cover.SOLUTION: The electric wire W with the terminal fitting is formed by connecting a terminal fitting 20 to a terminal part of the electric wire 10 formed by covering the outer periphery of a core wire 11 with an insulation cover 12. The terminal fitting 20 includes: a connection 21 connecting to the other conductive member; an electric wire crimping part 22 which is crimped to the core wire 11 exposed from the terminal of the insulation cover 12 in the terminal part of the electric wire 10; and a linking part 23 which links the electric wire crimping part 22 and the connection 21. A cylindrical water stop cover 30 covers the exposed portion of the core wire 11, and at the linking part 23, projections 29 are provided which are hooked to the water stop cover 30.

Description

  The present invention relates to an electric wire with a terminal fitting and a terminal fitting.

  2. Description of the Related Art Conventionally, in an electric wire with a terminal metal fitting in which a terminal metal fitting is connected to an end of the electric wire, a technique for waterproofing by covering a connection portion between the terminal metal fitting and the electric wire with a waterproof coating such as a heat-shrinkable tube is known. For example, in the thing of patent document 1, a terminal metal fitting has the connection part connected to another electrically-conductive member, the electric wire crimping part crimped | bonded to an electric wire, and the connection part which connects an electric wire crimping part and a connection part. And the electric wire crimping | compression-bonding part is crimped | bonded to the core wire exposed from the terminal of insulation coating in the terminal part of the electric wire. The heat-shrinkable tube is covered over a range extending from the terminal fitting connecting portion to the terminal portion of the insulation coating of the electric wire so as to cover the entire exposed core wire, and the adhesive layer provided on the inner peripheral surface of the heat-shrinkable tube is The gap between the heat shrinkable tube and the terminal fitting is filled.

JP 2000-259883 A

By the way, when environmental temperature rises remarkably after manufacture, a contact bonding layer melt | dissolves and there exists a possibility that the heat contraction tube covered on the predetermined position may shift | deviate.
In the waterproof technology as described above, since the displacement of the waterproof coating is directly linked to a decrease in waterproof property, it is important to hold the waterproof coating in a predetermined position, and a countermeasure has been desired.

  This invention is completed based on the above situations, Comprising: It aims at providing the electric wire with a terminal metal fitting which can prevent the position shift of a water stop coating, and a terminal metal fitting.

  The electric wire with terminal metal fittings of the present invention is an electric wire with terminal metal fittings in which the terminal metal fittings are connected to the terminal portion of the electric wire whose outer periphery is coated with an insulating coating, and the terminal metal fittings are connected to other conductive members. A connecting portion that connects the connecting portion, the wire crimping portion that is crimped to the core wire exposed from the end of the insulation coating, and a connecting portion that connects the wire crimping portion and the connecting portion, The exposed portion of the core wire is covered with a cylindrical water-stop coating, and the connecting portion is provided with a protrusion that is caught by the water-stop coating. According to such a configuration, it is possible to prevent displacement of the water stop coating.

Further, a bottom plate on which the terminal portion of the electric wire is placed on one surface side extends from the connecting portion to the wire crimping portion, and the connecting portion rises from both side edges of the bottom plate to the one surface side. A side plate may be provided, and the protrusion may protrude from a rising edge of the side plate.
The waterproof coating may be a heat shrinkable tube, and the protrusion may be caught on the heat shrinkable tube after heat shrinkage.

  In addition, an adhesive layer may be provided on the inner peripheral surface of the waterproof coating, and the protrusion may penetrate the adhesive layer by breaking through the adhesive layer. According to such a configuration, even if the environmental temperature is remarkably increased after manufacturing and the adhesive layer is melted, it is possible to prevent the displacement of the water stop coating.

Moreover, the water stop part which is distribute | arranged between the said connection part and the said water stop coating | cover, and fills the gap | interval between this at the position of the said wire crimping part side rather than the said protrusion among the said connection parts is provided. It is good. According to such a configuration, since the water stop portion prevents water from entering the wire crimping portion side, for example, a gap is formed between the water stop coating and the terminal fitting at the position of the protrusion, or the protrusion is stopped. Even if it penetrates a water coating, it can prevent that waterproofness falls by it.
A plurality of the protrusions may be provided.

  Further, the core wire and the terminal fitting may be formed of different kinds of metals. As described above, when the core wire of the electric wire and the terminal fitting are made of different kinds of metals, if moisture intervenes in the connection portion between the two, the two metals dissolve as ions in the water, and corrosion occurs due to electrochemical reaction. There is a risk of progressive electric corrosion. Therefore, the present invention is particularly effective because it is important to prevent the displacement of the water stop coating and to waterproof the connecting portion between the electric wire and the terminal fitting.

  The terminal fitting of the present invention is a terminal fitting connected to a terminal portion of an electric wire whose outer periphery of a core wire is covered with an insulating coating, the connecting portion connected to another conductive member, and the insulating coating at the terminal portion of the electric wire A wire crimping portion that is crimped to the core wire exposed from the terminal of the wire, and a connecting portion that connects the wire crimping portion and the connection portion, and the connection portion with the wire is covered with a cylindrical waterproof coating. The attached part is provided with a protrusion that is hooked on the water-stop coating.

  Further, a bottom plate on which the terminal portion of the electric wire is placed on one surface side extends from the connecting portion to the wire crimping portion, and the connecting portion rises from both side edges of the bottom plate to the one surface side. A side plate may be provided, and the protrusion may protrude from a rising edge of the side plate.

  ADVANTAGE OF THE INVENTION According to this invention, the electric wire with a terminal metal fitting and the terminal metal fitting which can prevent the position shift of a water stop coating | cover can be provided.

Partially cutaway sectional view of an electric wire with terminal fittings according to Embodiment 1 The perspective view showing the state before connecting a terminal metal fitting to the terminal part of an electric wire Cross section of heat shrink tube Top view showing how chain terminals are heat-treated Plan view showing the state before crimping the terminal fitting to the end of the wire The top view showing the state after crimping the terminal metal fitting to the terminal part of the electric wire Partially cutaway cross-sectional view of a wire with terminal fittings showing the state before heat shrinking the heat shrinkable tube Partially cutaway sectional view of an electric wire with terminal fittings in Embodiment 2. Partially cutaway sectional view of the electric wire with terminal fittings in other embodiment (1) Partially cutaway sectional view of the electric wire with terminal fittings in other embodiment (2)

<Embodiment 1>
Hereinafter, Embodiment 1 which actualized this invention is demonstrated in detail, referring FIGS. 1-7.
The electric wire W with terminal fittings in the present embodiment is formed by connecting the terminal fitting 20 to the end of the electric wire 10 in which the outer periphery of the core wire 11 is covered with the insulating coating 12. In the present embodiment, a case will be described in which the electric wire 10 is an aluminum electric wire provided with a core wire 11 made of aluminum or an aluminum alloy, while the terminal fitting 20 is made of copper or a copper alloy. In the following, each component will be described with the left side of FIG. 1 as the front, the right side as the rear, the upper side as the upper side, and the lower side as the lower side.

  The electric wire 10 is composed of a core wire 11 formed by twisting a plurality of fine metal wires, and an insulating coating 12 made of a synthetic resin that covers the outer periphery of the core wire 11. The insulating coating 12 has a predetermined length at the end of the electric wire 10. The terminal of the core wire 11 is exposed by being peeled. The core wire may be a single core wire.

  The terminal fitting 20 is connected to a connection portion 21 connected to a male terminal fitting (other conductive member) on the other side (not shown), a wire crimping portion 22 to be crimped to a terminal portion of the electric wire 10, and a wire crimping portion 22. This is a female terminal fitting provided with a connecting portion 23 that connects the portion 21. The terminal fitting 20 is formed by pressing a metal plate material, has a shape elongated in the front-rear direction as a whole, and a plating layer (not shown) is formed on the surface of the metal plate material. As a metal which comprises a plating layer, arbitrary metals, such as tin and nickel, can be employ | adopted as needed. In the present embodiment, a tin plating layer is formed on the surface of copper or a copper alloy. In addition, it is good also as a structure which does not form a plating layer on the surface of a metal plate material.

  The connecting portion 21 has a substantially rectangular tube shape as a whole, and is connected by inserting a tab of a male terminal fitting (not shown). A bottom plate 24 on which the terminal portion of the electric wire 10 is placed on the upper surface side (one surface side) is provided behind the connection portion 21 so as to extend in the front-rear direction.

The wire crimping portion 22 is provided with an insulation barrel 27 to be crimped to the end of the insulating coating 12 behind the wire barrel 25 to be crimped to the end of the core wire 11.
The wire barrel 25 has a pair of barrel pieces that rise upward from both side edges of the bottom plate 24. The wire barrel 25 is crimped and crimped into a so-called heart shape that embeds the core wire 11 from the outside and bites into the core wire 11 while abutting the protruding edges of both barrel pieces. A serration 26 is formed on the inner surface of the wire barrel 25. The serration 26 is formed by aligning a plurality of depressions having a parallelogram shape vertically and horizontally.

  As with the wire barrel 25, the insulation barrel 27 has a pair of barrel pieces that rise upward from both side edges of the bottom plate 24, and embeds the end of the insulating coating 12 from the outside while overlapping the protruding ends of the barrel pieces. It is crimped to a so-called overlap type.

  The connecting portion 23 has a pair of side plates 28 rising upward from both side edges of the bottom plate 24 and is formed in a U-shaped cross section. The pair of side plates 28 are connected to the connecting portion 21 and the wire barrel 25 in a continuous manner. The connecting portion 23 is provided with a protrusion 29 that is hooked on a heat shrinkable tube (water blocking coating) 30 described later. The protrusion 29 will be described after the heat shrinkable tube 30 is described.

  A water stop portion 40 is provided in the connecting portion 23. The water stop portion 40 fills the groove 23A surrounded by the bottom plate 24 and the pair of side plates 28 without any gap and protrudes above the groove 23A. The water stop portion 40 is in close contact with the inner side surfaces (opposing surfaces) of the pair of side plates 28 and the upper side surface of the bottom plate 24 without a gap. The water stop portion 40 is formed by fitting a resin processed product into the groove 23A of the connecting portion 23 and performing heat treatment.

The resin processed product is processed according to the shape of the groove 23A, and has a cylindrical core material and a skin material covering the outer peripheral surface. The core material is made of, for example, a resin material having a melting point of about 170 ° C., and the skin material is made of a resin material (adhesive plastic resin) having a melting point of about 120 ° C. This resin processed product has moderate elasticity, and its diameter is slightly larger than the width dimension of the groove 23A. When the resin processed product is fitted into the groove 23A, it is in close contact with the inner peripheral surface of the groove 23A. Then, when the heat treatment is performed, the skin material of the resin processed material is melted and deformed to become an adhesive component, and is in close contact with the wall surface of the groove 23A in a liquid-tight manner, so that the water stop portion 40 is formed. In addition, even if a core material is heat-processed, it does not fuse | melt and the shape of a resin processed material is maintained.
This resin processed product can be obtained, for example, by extruding a resin material into an elongated cylindrical shape using an extrusion molding apparatus and cutting the molded product into a predetermined size.

  A heat shrinkable tube 30 is put on the connecting portion between the terminal fitting 20 and the electric wire 10. The heat-shrinkable tube 30 is made of a synthetic resin material that shrinks by heat treatment, and covers the connecting portion 23 of the terminal fitting 20 to the end portion of the insulating coating 12 of the electric wire 10 (up to a position behind the insulation barrel 27). In other words, the terminal fitting 20 has a cylindrical shape that can cover substantially the entire portion excluding the connection portion 21.

  An inner peripheral surface of the heat shrinkable tube 30 is provided with an adhesive layer 31 made of a thermoplastic adhesive that exhibits adhesiveness when softened or melted by heating. In the present embodiment, the thickness of the adhesive layer 31 before heat shrinkage and the thickness dimension of the heat shrinkable tube 30 are equivalent (see FIG. 3). Further, the inner diameter dimension of the heat shrinkable tube 30 including the adhesive layer 31 before heat shrinkage is such a size that the electric wire W with terminal fitting can be inserted inside (see FIG. 7). The state after the heat-shrinkable tube 30 is heat-shrinked will be described later when the manufacturing process is described.

  The connection portion 23 of the terminal fitting 20 is provided with a protrusion 29 that is caught by the heat shrinkable tube 30. The protrusion 29 is provided at a position near the connecting portion 21 in the connecting portion 23, and is positioned in front of the water stop portion 40. One protrusion 29 is provided on each of the pair of side plates 28, and is provided so as to protrude from the rising edge of each side plate 28. The protrusion 29 is formed by punching the edge of the side plate 28 into a predetermined shape, and has a triangular shape with a sharp tip. The tip of the protrusion 29 is located in the middle of the protrusion 29 in the front-rear direction. The protrusion 29 is hooked on the heat-shrinkable tube 30 after heat-shrinking, and the protruding dimension is appropriately set in consideration of the thickness dimension of the heat-shrinkable tube 30 and the adhesive layer 31. In the present embodiment, the protrusion dimension of the protrusion 29 is set to a dimension that penetrates the adhesive layer 31 provided on the inner side of the heat shrinkable tube 30 so that the tip bites into the heat shrinkable tube 30. The pair of protrusions 29 are symmetric with respect to the axis of the terminal fitting 20.

Next, an example of the manufacturing process of the electric wire W with a terminal metal fitting according to the present embodiment will be described.
First, a punching process is performed on a metal plate material. Thereby, the chain terminal 52 of the form with which the some terminal metal piece piece 51 was connected was formed in the side edge of the carrier 50 which makes a strip | belt shape (refer FIG. 4). The plurality of terminal fitting pieces 51 are formed side by side at substantially equal intervals along the longitudinal direction of the carrier 50. The terminal metal piece 51 has a shape in which portions corresponding to the connecting portion 21, the connecting portion 23, and the wire crimping portion 22 are integrally connected, and the connecting portion 23 is formed with a protrusion 29. Further, the carrier 50 is formed with feed holes 53 arranged at substantially equal intervals along the longitudinal direction. A feed claw provided on a processing machine (not shown) is engaged with the feed hole 53.

In this punching process, serrations 26 are formed on the surface of the portion constituting the wire barrel 25 on the side where the core wire 11 is placed. These may be formed in a process different from the punching process.
Subsequently, a bending process is performed with respect to the metal plate material in which the punching process was performed. By performing this bending process, the terminal metal piece 51 is formed in a predetermined shape.

Then, the water stop part formation process which forms the water stop part 40 is performed.
In this step, first, the resin processed product is fitted into the groove 23 </ b> A of the connecting portion 23. The feed claw is engaged with the feed hole 53 formed in the carrier 50, and the terminal fitting pieces 51 are sequentially fed, and the assembling machine (not shown) processes the resin in the groove 23A of the connecting portion 23 in each terminal fitting piece 51. Press fit.

  Next, heat treatment is performed to closely adhere the resin processed product to the groove 23A. When the terminal fitting pieces 51 fitted with the resin workpiece are sequentially fed into the heating device D and the plurality of terminal fitting pieces 51 are continuously heat-treated, the skin material of the resin workpiece is melted and the wall surface of the groove 23A. Close contact with. Thereafter, the resin processed product is cooled and hardened, and is fixed in a state of being in close contact with the groove 23A of the connecting portion 23 without a gap. Thereby, the water stop part 40 is formed.

  Subsequently, an electric wire crimping process for crimping the electric wire 10 is performed. First, the insulation coating 12 of the electric wire 10 is peeled to expose the core wire 11, and the end portion of the insulation coating 12 and the core wire 11 exposed from the insulation coating 12 are placed on the upper surface of the bottom plate 24 of the terminal fitting 20. Thereafter, the insulation barrel 27 and the wire barrel 25 are respectively crimped to the insulating coating 12 and the core wire 11 by a crimping device (not shown). At the same time, a cutting process for separating the terminal metal piece 51 from the carrier 50 is performed. Thereby, the electric wire W with a terminal metal fitting by which the terminal metal fitting 20 is connected to the terminal of the electric wire 10 can be obtained. In addition, you may perform the water stop part formation process described previously after an electric wire crimping process.

  Next, the coating process of the heat shrinkable tube 30 is performed in which the heat shrinkable tube 30 is placed on a predetermined position of the electric wire W with terminal fittings. First, the heat-shrinkable tube 30 in an unheated state is inserted from the side of the terminal fitting 20 and arranged so as to cover a predetermined portion of the electric wire W with terminal fitting (connection portion between the electric wire 10 and the terminal fitting 20) (see FIG. 7). ). Thereafter, heat treatment is performed by a heating device (not shown). Then, the heat-shrinkable tube 30 contracts, the adhesive layer 31 provided on the inner peripheral surface thereof melts, and closely adheres to the outer surface of the connection portion between the terminal fitting 20 and the electric wire 10 (see FIG. 1). At this time, the melted adhesive layer 31 includes the connecting portion 23, the water stopping portion 40, the core wire 11, the wire barrel 25, the insulation barrel 27, the entire outer surface of the insulating coating 12, and the entire portion of the protrusion 29 excluding the tip. The protrusion 29 is in close contact with the heat shrinkable tube 30 without any gap.

  Thus, the heat-shrinkable tube 30 is put on a predetermined position of the electric wire W with terminal fitting while being caught by the protrusion 29, and the manufacture of the electric wire W with terminal fitting is completed. The heat-shrinkable tube 30 may be inserted from the electric wire 10 side, and in this case, it is preferable to insert the heat-shrinkable tube 30 into the electric wire 10 in advance before the electric wire crimping step described above.

Next, operations and effects of the first embodiment configured as described above will be described.
The electric wire W with terminal metal fittings of the present embodiment is formed by connecting the terminal metal fitting 20 to the terminal of the electric wire 10 whose outer periphery of the core wire 11 is covered with the insulating coating 12, and the terminal metal fitting 20 is a mating terminal. A connecting portion 21 connected to the metal fitting, a wire crimping portion 22 that is crimped to the core wire 11 exposed from the end of the insulating coating 12 at the end portion of the electric wire 10, and a connecting portion 23 that connects the wire crimping portion 22 and the connecting portion 21. The exposed portion of the core wire 11 is covered with a heat-shrinkable tube 30, and the connecting portion 23 is provided with a protrusion 29 that is hooked on the heat-shrinkable tube 30. Thereby, the position shift of the heat contraction tube 30 can be prevented.

  Further, an adhesive layer 31 is provided on the inner peripheral surface of the heat-shrinkable tube 30, and the protrusion 29 breaks through the adhesive layer 31 and bites into the heat-shrinkable tube 30. Thereby, even if environmental temperature rises significantly after manufacture and the adhesive layer 31 is melted, the protrusion 29 is caught on the heat shrinkable tube 30, so that the displacement of the heat shrinkable tube 30 can be prevented.

  Moreover, the water stop part which is distribute | arranged between the connection part 23 and the heat-shrinkable tube 30, and fills the clearance gap between these in the position behind the protrusion 29 (electric wire crimping part 22 side) among the connection parts 23. 40 is provided. Since the water stop portion 40 prevents water from entering the core wire 11, for example, a gap is formed between the heat shrink tube 30 and the terminal fitting 20 at the position of the protrusion 29, or the protrusion 29 is the heat shrink tube. Even if it penetrates 30, it can prevent that waterproofness falls by it.

  Further, the core wire 11 and the terminal fitting 20 are made of different metals. In such a case, if moisture is present in the connecting portion between the two, both metals are dissolved as ions in the water, and there is a possibility that galvanic corrosion in which corrosion proceeds due to an electrochemical reaction may occur. Therefore, since it is particularly important to reliably waterproof the connection portion between the electric wire 10 and the terminal fitting 20, it is particularly effective to prevent the position of the heat shrinkable tube 30 from being displaced as in this embodiment. In addition, since the electric wire 10 is an aluminum electric wire, the weight reduction of the electric wire W with a terminal metal fitting can be achieved.

<Embodiment 2>
Next, the electric wire W with a terminal metal fitting which concerns on Embodiment 2 which actualized this invention is demonstrated with FIG.
The electric wire W with terminal fitting of the present embodiment is different from the first embodiment in that a plurality of protrusions 60 are provided on each side plate 28. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  Similar to the first embodiment, the electric wire W with terminal metal fittings according to the present embodiment is an electric wire W with terminal metal fittings in which the terminal metal fitting 20 is connected to the end of the electric wire 10 in which the outer periphery of the core wire 11 is covered with the insulating coating 12. The terminal fitting 20 has a connecting portion 21, a wire crimping portion 22, and a connecting portion 23. The exposed portion of the core wire 11 is covered with a heat-shrinkable tube 30, and the connecting portion 23 has A protrusion 60 is provided to be caught on the heat shrinkable tube 30.

  Similar to the first embodiment, the protrusion 60 is provided at a position near the connecting portion 21 in the connecting portion 23, and is located on the front side of the water stopping portion 40. A plurality of projections 60 are provided on each of the pair of side plates 28 (four in this embodiment). As in the first embodiment, all the protrusions 60 are provided so as to protrude from the rising edge of each side plate 28 by punching the end edge of the side plate 28 into a predetermined shape, and each has a triangular shape with a sharp tip. The tips of the protrusions 60 are located in the middle of the protrusions 60 in the front-rear direction. The four protrusions 60 provided on each side plate 28 are formed continuously in the front-rear direction without a gap. A portion where the protrusion 60 is formed (referred to as a protrusion 61) does not have an edge extending parallel to the axis of the terminal fitting 20, but has only an inclined edge extending in an oblique direction. And like Embodiment 1, all the protrusions 60 shall be hooked on the heat-shrinkable tube 30 after heat shrinkage, and it breaks through the adhesive layer 31 provided on the inner peripheral surface of the heat-shrinkable tube 30, and its tip is It is supposed to bite into the heat shrinkable tube 30. The protrusions 61 of the side plates 28 are symmetric with respect to the axis of the terminal fitting 20.

  As described above, in the present embodiment, the connecting portion 23 of the terminal fitting 20 is provided with the protrusion 60 that is hooked to the heat shrinkable tube 30. Can be prevented. Further, since a plurality of protrusions 60 are provided on each side plate 28, the heat contraction tube 30 is more easily hooked than when only one protrusion 60 is provided, and the positional displacement of the heat shrink tube 30 can be reliably prevented. it can.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) In the above-described embodiment, the protrusion 29 breaks through the adhesive layer 31 provided on the inner peripheral surface of the heat-shrinkable tube 30 so that the tip bites into the heat-shrinkable tube 30. For example, as shown in FIG. 9, the protrusion 70 may break through the adhesive layer 31 provided on the inner peripheral surface of the heat shrinkable tube 30, and the tip may break through the heat shrinkable tube 30 and protrude outward. . In such a case, it is good to provide the water stop part 40 which is distribute | arranged between the connection part 23 and the heat contraction tube 30, and fills the clearance gap between these on the back side of the processus | protrusion 29.
(2) In the above-described embodiment, the protrusion 29 is provided on the front side of the water stop portion 40. However, the present invention is not limited to this. For example, as shown in FIG. It may be provided on the side. In such a case, it is preferable that the tip of the protrusion 80 does not break through the heat shrinkable tube 30.

(3) In the above embodiment, the terminal fitting 20 is a female terminal fitting. However, the terminal fitting 20 is not limited to this, and the terminal fitting 20 may be a male terminal fitting provided with a male tab. A so-called LA terminal or the like in which a through hole is formed may be used, and a terminal fitting having an arbitrary shape can be formed as necessary.
(4) In the above embodiment, the core wire 11 of the electric wire 10 is made of aluminum or an aluminum alloy. However, the present invention is not limited to this, and the electric wire core wire may be made of copper or a copper alloy. It is good also as a structure formed with these metals. In the present embodiment, the terminal fitting 20 is made of copper or a copper alloy and a tin plating layer is formed on the surface. However, the present invention is not limited to this, and the terminal fitting is made of any metal as required. It is good also as a structure.

(5) In the above embodiment, the case where the connecting portion 23 of the terminal fitting 20 has a U-shaped cross section has been described. However, the present invention can be applied to any shape of the connecting portion of the terminal fitting. For example, the present invention can be applied to a case where the connecting portion has a flat plate shape.
(6) In the above embodiment, an example using the heat-shrinkable tube 30 as the water-stop coating has been shown. However, the present invention is not limited to this. For example, an elastic tube having rubber elasticity may be used as the water-stop coating, You may use what formed the sheet-like water stop tape around the connection part of an electric wire and a terminal metal fitting, and was formed in the cylinder shape.

(7) In the above embodiment, the adhesive layer 31 is provided on the inner peripheral surface of the heat-shrinkable tube 30, but the present invention is not limited to this, and the adhesive layer 31 may not be provided on the inner peripheral surface of the heat-shrinkable tube. Good.
(8) In the said embodiment, although the water stop part 40 is formed by inserting the resin processed material in the groove | channel 23A of the connection part 23, and heat-processing, it is not restricted to this, For example, a water stop part is formed. Alternatively, it may be formed by resin molding at the connecting portion of the terminal fitting.
(9) In the above-described embodiment, the protrusion 29 is provided so as to protrude from the rising edge of the side plate 28. However, the present invention is not limited to this, and for example, the protrusion can be raised by cutting a part of the bottom plate of the connecting portion. May be provided so as to protrude.

W ... Electric wire with terminal fitting 10 ... Electric wire 11 ... Core wire 12 ... Insulation coating 20 ... Terminal fitting 21 ... Connection part 22 ... Electric wire crimping part 23 ... Connecting part 24 ... Bottom plate 28 ... Side plate 29, 60, 70, 80 ... Projection 30 ... Heat shrinkable tube (waterproof coating)
31 ... Adhesive layer 40 ... Water stop part

Claims (9)

A terminal fitting electric wire in which a terminal fitting is connected to a terminal portion of an electric wire whose outer periphery is coated with an insulation coating,
The terminal fitting includes a connection portion connected to another conductive member, an electric wire crimp portion that is crimped to the core wire exposed from the end of the insulation coating at the end portion of the electric wire, the electric wire crimp portion, and the connection portion. And a connecting part that connects
The exposed portion of the core wire is covered with a cylindrical water-stop coating,
The electric wire with a terminal metal fitting in which the projection hooked to the water stop coating is provided in the joint part. From the connecting portion to the wire crimping portion, a bottom plate on which the end portion of the wire is placed on one surface side is provided extending,
The connecting portion has a pair of side plates that rise from the both side edges of the bottom plate to the one surface side,
The electric wire with a terminal fitting according to claim 1, wherein the protrusion is provided so as to protrude from a rising edge of the side plate. The waterproof coating is a heat shrinkable tube,
The electric wire with a terminal fitting according to claim 1 or 2, wherein the protrusion is caught on the heat shrinkable tube after heat shrinkage. An adhesive layer is provided on the inner peripheral surface of the waterproof coating,
The electric wire with a terminal metal fitting according to any one of claims 1 to 3, wherein the protrusion penetrates the adhesive layer by breaking through the adhesive layer.   The water stop part which is distribute | arranged between the said connection part and the said water stop coating | cover, and fills the clearance gap between the said protrusions in the position of the said wire bonding part side rather than the said protrusion among the said connection parts is provided. The electric wire with a terminal metal fitting as described in any one of thru | or 4.   The electric wire with a terminal fitting according to any one of claims 1 to 5, wherein a plurality of the protrusions are provided.   The electric wire with a terminal metal fitting according to any one of claims 1 to 6, wherein the core wire and the terminal metal fitting are formed of different kinds of metals. A terminal fitting connected to a terminal portion of an electric wire whose outer periphery is covered with an insulating coating,
A connecting portion that connects to another conductive member, a wire crimping portion that is crimped to the core wire exposed from the end of the insulation coating at the terminal portion of the wire, and a connecting portion that connects the wire crimping portion and the connecting portion And
In what is covered with a cylindrical water-stop coating on the connection portion with the wire,
A terminal fitting provided with a projection that is hooked on the waterproof coating on the joint portion. From the connecting portion to the wire crimping portion, a bottom plate on which the end portion of the wire is placed on one surface side is provided extending,
The connecting portion has a pair of side plates that rise from the both side edges of the bottom plate to the one surface side,
The terminal fitting according to claim 8, wherein the protrusion protrudes from a rising edge of the side plate.

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