JP2020181698A - Terminal-equipped wire and terminal fitting - Google Patents

Abstract

To provide a terminal-equipped wire that can achieve both high accuracy of forming a waterproof body on the terminal-equipped wire and high productivity of the terminal-equipped wire, and a terminal fitting that can be used for the terminal-equipped wire.SOLUTION: A terminal-equipped wire 1 includes a wire 10, a terminal fitting 20 that is made of a metal plate and can be attached to the wire 10, and a water stop body 60. The terminal fitting 20 includes a connecting portion 36 connecting a first barrel portion 41 and a second barrel portion 42, and a notch 48 that opens at the end face of the metal plate facing a region surrounded by the first barrel portion 41, the second barrel portion 42, and the connecting portion 36, and extends away from the region. The water stop body 60 is made of a water stop material capable of forming the water stop body 60 through the arrangement and hardening of the water stop material having fluidity, and is provided so as to isolate the end face 36a of the metal plate constituting the connecting portion 36 from a conductive core wire 11 exposed to the region.SELECTED DRAWING: Figure 3

Description

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

In recent years, for example, in a wire harness distributed to a vehicle, a terminal fitting formed of copper or a copper alloy is attached to an electric wire having a conductor core wire formed of aluminum or an aluminum alloy (hereinafter referred to as "aluminum electric wire"). Wires with terminals may be used.

An electric wire with a terminal using an aluminum electric wire has advantages in terms of weight reduction of the electric wire itself, but it adheres between the conductor core wire and the terminal metal fitting due to the fact that the conductor core wire and the terminal metal fitting are different metals. There is a demerit in that the generated water becomes an electrolytic solution and galvanic corrosion (contact corrosion of dissimilar metals) may occur. As is well known, galvanic corrosion occurs due to the difference in standard electrode potential between dissimilar metals.

Therefore, in one of the conventional electric wires with terminals using an aluminum electric wire, a seal member for stopping water is provided so as to isolate the conductor core wire crimped to the barrel portion of the terminal metal fitting from the outside. As a result, the above-mentioned galvanic corrosion is suppressed, and the reliability of the electrical connection between the terminal fitting and the conductor core wire is maintained for a long period of time (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2019-09026

In the above-mentioned conventional electric wire with a terminal, a seal member is formed by using an ultraviolet curable resin. Specifically, after the terminal fitting is crimped to the end of the electric wire, the liquid resin before curing is dropped so as to cover the conductor core wire exposed to the outside. Then, after sufficiently covering the conductor core wire and the terminal metal fittings (barrel portion, etc.) around it with the resin before curing, the resin is cured using ultraviolet rays to form a seal member composed of the cured resin. It has become like.

However, as can be understood from the above description, in this conventional electric wire with a terminal, the accuracy of the shape and arrangement of the sealing member depends on the dropping amount and dropping position of the liquid resin. For example, if the amount of liquid resin dropped is too large, even if the dropping position is appropriate, the resin may wet and spread over a wider range than the design envisioned (so-called liquid dripping occurs). is there. Then, if the resin is cured without noticing the wet and spread resin, a seal member is formed at a place not assumed in the design of the electric wire with a terminal. A sealing member having such an unexpected shape can prevent, for example, inserting an electric wire with a terminal into a terminal accommodating chamber of a connector housing.

It is considered that the above-mentioned dripping can be suppressed by strictly controlling the dropping amount and dropping position of the liquid resin. However, if the required accuracy such as the amount of liquid resin dropped is excessively increased, there is a concern that the productivity of the electric wire with terminals may decrease.

The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a terminal-equipped electric wire capable of achieving both high accuracy of forming a waterproof body on a terminal-attached electric wire and high productivity of the terminal-attached electric wire. An object of the present invention is to provide a terminal fitting that can be used for the electric wire with a terminal.

In order to achieve the above-mentioned object, the electric wire with a terminal and the terminal fitting according to the present invention are characterized by the following [1] to [4].
[1]
A terminal-equipped electric wire including an electric wire, a terminal fitting made of a metal plate material and attached to the electric wire, and a water blocking body.
The terminal fitting
The first barrel portion that is crimped to the conductor core wire that is exposed to the outside of the insulation coating at the end of the electric wire, and
A second barrel portion that is crimped to the insulating coating at the terminal of the electric wire and
A connecting portion connecting the first barrel portion and the second barrel portion,
It has a notch that opens at the end face of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion, and extends in a direction away from the region.
The water stop body
The conductor core wire which is composed of the water-stopping material capable of forming the water-stopping body through the arrangement and hardening of the water-stopping material having fluidity and is exposed to the end face and the region of the metal plate material constituting the connecting portion. Provided to isolate between
Must be an electric wire with terminals.
[2]
In the electric wire with terminal described in [1] above,
The water stop body
It covers the conductor core wire exposed in the region and the end face of the metal plate material constituting the connecting portion, and is contained in the notch.
Must be an electric wire with terminals.
[3]
In the electric wire with a terminal according to the above [1] or the above [2],
The notch is
The tip portion has an inclined shape so as to be closer to the mounting surface on which the electric wire is to be mounted on the terminal fitting than the opening portion of the notch.
Must be an electric wire with terminals.
[4]
A terminal fitting made of a metal plate and attached to an electric wire.
The first barrel portion that is crimped to the conductor core wire that is exposed to the outside of the insulation coating at the end of the electric wire, and
A second barrel portion that is crimped to the insulating coating at the terminal of the electric wire and
A connecting portion connecting the first barrel portion and the second barrel portion,
It is provided with a notch that opens at the end surface of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion, and extends in a direction away from the region.
Must be a terminal bracket.

According to the electric wire with a terminal having the configuration of [1] above, the direction of opening in the end face of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion of the terminal fitting and away from the region. A notch is provided in the terminal fitting so as to extend to. Further, using a water-stopping material that can be cured after being arranged in a fluid state (for example, an ultraviolet curable resin or a thermosetting resin), the end face of the metal plate material constituting the connecting portion and the above-mentioned region. A waterproof body is provided so as to isolate the conductor core wire exposed to the water. Therefore, for example, when the water blocking material is dropped onto a terminal fitting or the like to form a water blocking body, even if the dropping amount of the water stopping material is slightly larger than the design value, the excess water stopping material is contained in the notch. By flowing in, it is possible to prevent the waterproof material from getting wet and spreading to a range not expected in the design. Therefore, the water blocking body having the designed shape can be formed at the designed position without excessively increasing the accuracy of the dropping amount and the dropping position of the water blocking material. Further, in particular, the above-mentioned galvanic corrosion can be appropriately suppressed by separating the connecting portion of the terminal fitting and the conductor core wire, in which water tends to collect when the electric wire with a terminal is flooded, with a waterproof body. Therefore, the electric wire with terminals of this configuration achieves both high accuracy of forming the water stop body on the electric wire with terminals and high productivity of the electric wire with terminals while enhancing the original function of the water stop body to suppress galvanic corrosion. It is possible.

According to the electric wire with a terminal having the configuration of [2] above, both the conductor core wire exposed in the area surrounded by the first barrel portion, the second barrel portion, and the connecting portion and the end face of the connecting portion are made of a waterproof body. By covering it, the conductor core wire and the end face of the connecting portion can be properly separated. In addition, by arranging the waterproof material to the extent that the waterproof body enters the notch (for example, dripping), the conductor core wire and the end face of the connecting portion are covered with a necessary and sufficient gap from the viewpoint of corrosion protection. Can be done.

According to the electric wire with a terminal having the configuration of [3] above, the tip portion is closer to the mounting surface than the opening portion of the notch (that is, the terminal fitting is tilted with respect to the mounting surface). ), A notch with an inclined shape is provided. Thereby, for example, when the amount of the water-stopping material dropped is larger than the design value, the excessively dropped water-stopping material can be guided into the notch without resisting gravity. Therefore, the terminal fitting of this configuration can further improve the forming accuracy of the water blocking body.

According to the terminal fitting having the configuration of the above [4], the end surface of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion of the terminal fitting is opened and away from the region. A notch is provided in the terminal fitting so as to extend. Therefore, for example, when forming a waterproof body for corrosion protection by using a method of dropping an ultraviolet curable resin or a thermosetting resin, even if the amount of the resin dropped is slightly larger than the design value, it is excessive. By flowing the resin into the notch, it is possible to prevent the resin from getting wet and spreading to a range not expected in the design. Therefore, a water stop body having the shape as designed can be formed at the position as designed without excessively increasing the accuracy of the dropping amount and the dropping position of the resin. Further, in particular, if a waterproof body is provided so as to cover the connecting portion of the terminal fitting where water tends to collect when the terminal fitting is flooded, the above-mentioned galvanic corrosion can be appropriately suppressed. Therefore, the terminal fitting of this configuration can achieve both high accuracy of forming a waterproof body for suppressing galvanic corrosion and high productivity of an electric wire with a terminal using the terminal fitting.

As described above, according to the present invention, a terminal-equipped electric wire capable of achieving both high accuracy of forming a waterproof body on the terminal-equipped electric wire and high productivity of the terminal-attached electric wire, and a terminal that can be used for the terminal-attached electric wire. We can provide metal fittings.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an electric wire with a terminal according to an embodiment of the present invention before the waterproof body is provided. 2 (a) to 2 (c) show a side surface showing a process in which an ultraviolet curable liquid resin is dropped on the electric wire with a terminal shown in FIG. 1 to provide a waterproof body in a predetermined area of the electric wire with a terminal. It is a figure. FIG. 3 is a perspective view of an electric wire with a terminal according to an embodiment of the present invention provided with a water blocking body.

<Embodiment>
Hereinafter, the electric wire 1 with a terminal to which the terminal metal fitting 20 according to the embodiment of the present invention is attached to the electric wire 10 will be described with reference to the drawings. Hereinafter, for convenience of explanation, in the axial direction (fitting direction) of the terminal fitting 20, the side (left side in FIGS. 1, 2 and 3) to which the mating terminal (not shown) is fitted is the tip side (front side). The opposite side (right side in FIGS. 1, 2 and 3) is referred to as a base end side (rear side). Further, in FIGS. 1, 2 and 3, the upper side and the lower side are referred to as an upper side and a lower side, respectively.

As shown in FIGS. 1 to 3, the terminal fitting 20 is crimped to the end of the electric wire 10, and the terminal fitting 20 and the conductor core wire 11 of the electric wire 10 are electrically connected. As shown in FIG. 3, a waterproof body 60 is provided at a predetermined position of the terminal fitting 20 to which the conductor core wire 11 of the electric wire 10 is connected. As a result, galvanic corrosion of the conductor core wire 11 is suppressed, and the reliability of the electrical connection between the terminal fitting 20 and the conductor core wire 11 can be maintained for a long period of time. The electric wire 1 with a terminal is composed of the electric wire 10, the terminal metal fitting 20, and the water stop body 60. The electric wire 1 with terminals constitutes, for example, a wire harness that is distributed to a vehicle such as an automobile.

The electric wire 10 is an insulated wire having a conductor core wire 11 and an insulating coating 12 made of a resin covering the conductor core wire 11. The conductor core wire 11 is made of aluminum or an aluminum alloy, and is made by twisting a plurality of strands. By forming the conductor core wire 11 of the electric wire 10 from aluminum or an aluminum alloy, the weight of the electric wire 1 with terminals is reduced, and the weight of the wire harness including the electric wire 1 with terminals is also reduced. The lightweight electric wire 1 with a terminal is particularly preferably used for a vehicle such as an electric vehicle or a hybrid vehicle in which a wire harness is frequently used.

The terminal fitting 20 is a conductor exposed from the insulating coating 12 at the terminal of the contact portion 31 and the electric wire 10 which are connected to the mating terminal (not shown) in order from the tip end side to the base end side in the axial direction. It has a first barrel portion 41 that is electrically connected to the core wire 11 and a second barrel portion that is electrically connected to the insulating coating 12 at the end of the electric wire 10. The contact portion 31 and the first barrel portion 41 are connected to each other by the first connecting portion 35, and the first barrel portion 41 and the second barrel portion 42 are connected by the second connecting portion 36.

The terminal fitting 20 is formed of a metal material different from the conductor core wire 11 made of aluminum or an aluminum alloy. Specifically, the terminal fitting 20 is formed by using a metal plate (plate-like body) made of copper or a copper alloy as a base material.

The terminal metal fitting 20 is formed by performing press working (punching and bending) on a metal plate (plate-shaped body). The entire surface (front and back surfaces and side surfaces) of the metal plate before being pressed is plated with tin (tin. Sn) or the like for the purpose of suppressing corrosion of the conductor core wire 11 of the electric wire 10 and improving corrosion resistance. It is preferable that the treatment is performed in advance. In this case, the end surface (processed surface) of the metal plate exposed by the press process after the press process is in a state where the base material (for example, copper) that has not been plated is exposed.

As shown in FIG. 1, the contact portion 31 is formed in a rectangular tubular shape with an open tip portion. A mating terminal (not shown) is inserted into the opening of the contact portion 31, and the contact portion 31 and the mating terminal are electrically connected.

The bottom wall (lower surface) 32 and the pair of side walls 33 constituting the rectangular tubular contact portion 31 extend from the proximal end side end to the proximal end side of the contact portion 31. The bottom wall 32 and the pair of side walls 33 extending from the contact portion 31 to the proximal end side are, in order from the distal end side to the proximal end side in the axial direction, the entire first connecting portion 35 and the first barrel. It constitutes a part of the part 41, the whole of the second connecting part 36, and a part of the second barrel part 42. Regarding the pair of side walls 33, the upper end surface 35a of the portion constituting the first connecting portion 35, the front end side end surface 41a and the rear end side end surface 41b of the portion constituting the first barrel portion 41, and the portion constituting the second connecting portion 36. As described above, the base material of the terminal fitting 20 is exposed on the upper end surface 36a of the above and the tip end surface 42a of the portion constituting the second barrel portion 42.

As shown in FIG. 1, the first barrel portion 41 is crimped to the conductor core wire 11 exposed from the insulating coating 12 at the end of the electric wire 10 and electrically connected to the conductor core wire 11. For such crimping and connection, the first barrel portion 41 has a pair of crimping pieces 45 extending from the upper ends of the pair of side walls 33 and crimped to the conductor core wire 11.

As shown in FIG. 1, the second barrel portion 42 is crimped to the insulating coating 12 at the end of the electric wire 10. For such crimping, the second barrel portion 42 has crimping pieces 46, 47 extending from the upper ends of the pair of side walls 33 and crimping to the insulating coating 12.

Slits that open toward the tip and extend (recess) toward the proximal end on the distal end faces (end faces toward the first barrel 41) at the roots of the crimping pieces 46 and 47 of the second barrel portion 42, respectively. A notch 48 in the shape of a shape is formed. In other words, the notch 48 is the end surface of the metal plate material facing the region S surrounded by the first barrel portion 41, the second barrel portion 42, and the connecting portion 36 (the end surface 42a on the distal end side of the second barrel portion 42). ), And extends away from the area S. As shown in FIGS. 1 and 2 (a), the region S is on the proximal end side of the rear end side end surface 41b of the first barrel portion 41 and is closer to the distal end side end surface 42a of the second barrel portion 42. This is a region that is on the tip end side and is on the upper side of the upper end surface 36a of the second connecting portion 36.

Further, in this example, the notch 48 is the deepest portion of the notch 48 (that is, the tip of the notch, that is, the tip of the notch) rather than the opening portion of the notch 48 (in this example, the portion on the tip side of the terminal fitting 20). Then, the portion on the base end side of the terminal fitting 20) is inclined so as to be closer to the bottom wall 32 (the mounting surface described later). Further, the upper end surface 36a of the second connecting portion 36 and the lower wall surface of the notch 48 form a continuous continuous surface. The action / effect of the notch 48 will be described later.

The upper surface of the bottom wall 32 extending from the contact portion 31 to the base end side of the terminal fitting 20 before crimping is referred to as a “mounting surface” on which the end portion of the electric wire 10 is arranged. That is, the electric wire 10 is located so that the conductor core wire 11 exposed from the insulating coating 12 is sandwiched between the pair of crimping pieces 45 and the insulating coating 12 is sandwiched between the crimping pieces 46 and 47. A pair of crimping pieces 45 and crimping pieces 46, 47 are crimped using a well-known crimping machine or the like in a state where the swords are arranged on the mounting surface. As a result, the pair of crimping pieces 45 are crimped to the conductor core wire 11 of the electric wire 10, and the crimping pieces 46 and 47 are crimped to the insulating coating 12 of the electric wire 10. As a result, as shown in FIG. 1, an electric wire with a terminal before the water stop body 60 is provided can be obtained.

In the example shown in FIG. 1, the pair of crimping pieces 45 are crimped to the conductor core wire 11 in a curved state so as to bite into the conductor core wire 11 in a state where the pair of extending ends are abutted against each other. .. Further, the terminal portion 11a of the conductor core wire 11 is located on the distal end side of the pair of crimping pieces 45 on the distal end side, and is exposed from the first barrel portion 41. The crimping pieces 46 and 47 are crimped to the insulating coating 12 in a curved state so that the extending ends of the crimping pieces 47 overlap (overlap) on the extending ends of the crimping pieces 46. It is crimped.

As shown in FIGS. 2 (a) to 2 (c), the water stop body 60 is provided by using the dropping device 50 with respect to a predetermined area of the electric wire with a terminal before the water stop body 60 is provided. In the water stop body 60, a water stop material having fluidity (in this example, an ultraviolet curable liquid resin 60a) is dropped and arranged in a predetermined region, and then the water stop material is used by a predetermined method (this example). Then, it is composed by curing by irradiation with ultraviolet rays).

Specifically, as shown in FIG. 2A, the liquid resin 60a is sequentially dropped while the dropping device 50 is reciprocated in the width direction and moved in the axial direction of the terminal fitting 20. As a result, the liquid resin 60a is arranged so as to cover the conductor core wire 11 exposed in the above-mentioned region S. Further, the liquid resin 60a is formed by biting into the conductor core wire 11 while the extending ends of the pair of crimping pieces 45 of the first barrel portion 41 are brought into contact with each other (see also FIG. 1). It is arranged so as to fill in. Further, the liquid resin 60a is arranged so as to cover the end portion 11a of the conductor core wire 11 exposed to the tip end side from the first barrel portion 41. In addition, the liquid resin 60a includes the base end side portion of the upper end surface 35a of the first connecting portion 35, the entire front end side end surface 41a of the first barrel portion 41, the entire rear end side end surface 41b, and the second connecting portion 36. It is arranged so as to cover the entire upper end surface 36a of the second barrel portion 42 and the entire end surface 42a on the distal end side of the second barrel portion 42.

Here, as described above, the upper end surface 35a of the first connecting portion 35, the front end side end surface 41a and the rear end side end surface 41b of the first barrel portion 41, the upper end surface 36a of the second connecting portion 36, and the second barrel. The base material (Cu or the like) of the terminal fitting 20 is exposed on the end surface 42a on the tip end side of the portion 42. By arranging the resin 60a so as to cover these end faces of the terminal metal fittings 20 and then curing the resin 60a to form the waterproof body 60 as described later, the end faces and the conductor core wire 11 can be separated from each other. As a result, galvanic corrosion of the conductor core wire 11 can be suppressed.

Further, in the process of sequentially dropping the liquid resin 60a using the dropping device 50, even if a larger amount of the resin 60a than the design value is unintentionally dropped, as shown in FIG. 2B. , Excess resin 60a flows into the notch 48. At this time, since the notch 48 is tilted so as to be located lower (that is, toward the bottom wall 32 which is the mounting surface of the electric wire 10) as the distance from the opening is increased, the excessively dropped resin 60a However, it can be guided into the notch 48 without resisting gravity. As a result, it is possible to prevent the water blocking body 60 from spreading beyond the area (a range not assumed in the design).

After arranging the liquid resin 60a as described above, the liquid resin 60a is cured by using ultraviolet rays to stop the conductor core wire 11 and the above-mentioned end faces from being exposed to the outside as shown in FIG. An electric wire 1 with a terminal covered with a water body 60 can be obtained.

<Action / effect>
As described above, according to the electric wire 1 with a terminal according to the embodiment of the present invention, the liquid resin 60a (the present invention) covers each end surface (for example, the upper end surface 36a of the second connecting portion 36) of the conductor core wire 11 and the terminal fitting 20. In the example, when the ultraviolet curable resin 60a) is dropped, even if the amount of the resin 60a dropped is larger than the design value, the excess waterproof body 60 flows into the notch 48, which is assumed in the design. It is possible to prevent the resin 60a from spreading to a range that does not exist. Therefore, the waterproof body 60 having the designed shape can be formed at the designed position without excessively increasing the accuracy of the dropping amount and the dropping position of the resin 60a. Further, by separating the second connecting portion 36 and the conductor core wire 11, which are particularly liable to collect water when the electric wire 1 with terminals is exposed to water, by a waterproof body 60, the above-mentioned galvanic corrosion can be appropriately suppressed. Therefore, the electric wire 1 with terminals enhances the original function of the waterproof body 60 for suppressing galvanic corrosion, and has high accuracy in forming the waterproof body 60 on the electric wire 1 with terminals and high productivity of the electric wire 1 with terminals. Can be compatible with each other. Further, since the water stop body 60 can be formed at an appropriate position of the terminal fitting 20, the electric wire 1 with a terminal accommodates the electric wire 1 with a terminal in the terminal accommodating chamber (not shown) of the connector housing (not shown), for example. Workability can be improved.

Further, for example, a liquid resin is placed on the outer surfaces of the crimping pieces 46 and 47 of the second barrel portion 42 so as to more reliably cover the end surface of the terminal fitting 20 (particularly, the end surface 42a on the tip end side of the second barrel portion 42). 60a may be dropped. In this case, the dropped resin 60a easily spreads to an unintended range by flowing and spreading along the outer surface of the crimping pieces 46 and 47. On the other hand, in the terminal fitting 20, the notch 48 catches the water blocking body 60 flowing along the outer surface of the crimping pieces 46 and 47. Therefore, even in this case, it is possible to prevent the water stop body 60 from being formed in a range not assumed in the design.

Further, the electric wire 1 with terminals includes both the conductor core wire 11 exposed in the region S surrounded by the first barrel portion 41, the second barrel portion 42, and the connecting portion 36, and the upper end surface 36a of the second connecting portion 36. Is covered with the waterproof body 60, so that the conductor core wire 11 and the upper end surface 36a can be properly separated. Further, by dropping the resin 60a to the extent that the waterproof body 60 enters the notch 48, the conductor core wire 11 and the upper end surface 36a can be covered with a necessary and sufficient gap from the viewpoint of corrosion prevention.

Further, according to the terminal-equipped electric wire 1 having the present configuration, a notch 48 is provided so as to be inclined toward the bottom wall 32 (mounting surface) of the terminal fitting 20. As a result, the excessively dropped resin 60a can be guided into the notch 48 without resisting gravity.

<Other forms>
The present invention is not limited to each of the above embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

In the above embodiment, the notch 48 is tilted so as to be located lower toward the base end side (that is, toward the mounting surface of the second barrel portion 42). On the other hand, the notch 48 may extend parallel to or upward in the axial direction of the terminal fitting 20. Further, in the above embodiment, the upper end surface 36a of the second connecting portion 36 and the lower wall surface of the notch 48 form a continuous continuous surface. On the other hand, the upper end surface 36a and the lower wall surface of the notch 48 may form an offset surface.

Further, in the above embodiment, the notch 48 is provided in the second barrel portion 42. On the other hand, the notch 48 may be provided at a position other than the second barrel portion 42. For example, the notch 48 may be provided so as to open in the upper end surface 36a of the second connecting portion 36, or may be provided so as to open in the rear end side end surface 41b of the first barrel portion 41. However, if the notch 48 is provided on the upper end surface 36a or the rear end side end surface 41b, the conductor core wire 11 may be exposed to the outside through the notch 48. In this case, it is preferable to take measures such as sufficiently filling the notch 48 with the water blocking body 60. It is advantageous to provide the notch 48 in the second barrel portion 42 in that such measures are not required.

Further, in the above embodiment, an ultraviolet curable resin is used as the water blocking material constituting the water blocking body 60. On the other hand, as the water blocking material constituting the water blocking body 60, any material may be used as long as it can exhibit the water blocking function.

Here, the features of the above-described embodiments of the electric wire 1 with terminals and the terminal fitting 20 according to the present invention are briefly summarized and listed below in [1] to [4], respectively.
[1]
An electric wire (1) with a terminal including an electric wire (10), a terminal metal fitting (20) made of a metal plate material and attached to the electric wire (10), and a waterproof body (60).
The terminal fitting (20)
The first barrel portion (41) crimped to the conductor core wire (11) exposed to the outside of the insulating coating (12) at the end of the electric wire (10), and
A second barrel portion (42) crimped to the insulating coating (12) at the terminal of the electric wire (10), and
A connecting portion (36) connecting the first barrel portion (41) and the second barrel portion (42),
The area (42a) is open to the end surface (42a) of the metal plate material facing the region (S) surrounded by the first barrel portion (41), the second barrel portion (42), and the connecting portion (36). It has a notch (48) extending away from S) and
The water stop body (60) is
The metal which is composed of the water-stopping material (60a) capable of forming the water-stopping body (60) through the arrangement and curing of the water-stopping material (60a) having fluidity and which constitutes the connecting portion (36). It is provided so as to isolate between the end surface (36a) of the plate material and the conductor core wire (11) exposed in the region (S).
Electric wire with terminals (1).
[2]
In the electric wire with terminal (1) described in [1] above,
The water stop body (60) is
It covers the conductor core wire (11) exposed in the region (S) and the end face (36a) of the metal plate material constituting the connecting portion (36), and is contained in the notch (48).
Electric wire with terminals (1).
[3]
In the electric wire with terminal (1) according to the above [1] or the above [2],
The notch (48)
The tip portion is inclined so as to be closer to the mounting surface (32) on which the electric wire (10) is to be mounted on the terminal fitting (20) than the opening portion of the notch (48). Has a shape,
Electric wire with terminals (1).
[4]
A terminal fitting (20) made of a metal plate and attached to an electric wire (10).
The first barrel portion (41) crimped to the conductor core wire (11) exposed to the outside of the insulating coating (12) at the end of the electric wire (10), and
A second barrel portion (42) crimped to the insulating coating (12) at the terminal of the electric wire (10), and
A connecting portion (36) connecting the first barrel portion (41) and the second barrel portion (42),
The area (42a) is open to the end surface (42a) of the metal plate material facing the region (S) surrounded by the first barrel portion (41), the second barrel portion (42), and the connecting portion (36). With a notch (48) extending away from S),
Terminal bracket (20).

1 Electric wire with terminal 10 Electric wire 11 Conductor core wire 11a End part (conductor core wire)
12 Insulation coating 20 Terminal metal fittings 32 Bottom wall (mounting surface)
36 Second connecting part (connecting part)
36a Upper end surface (end surface) of the second connecting portion
41 1st barrel part 42 2nd barrel part 48 Notch 60 Water stop body S area

Claims (4)

A terminal-equipped electric wire including an electric wire, a terminal fitting made of a metal plate material and attached to the electric wire, and a water blocking body.
The terminal fitting
The first barrel portion that is crimped to the conductor core wire that is exposed to the outside of the insulation coating at the end of the electric wire, and
A second barrel portion that is crimped to the insulating coating at the terminal of the electric wire and
A connecting portion connecting the first barrel portion and the second barrel portion,
It has a notch that opens at the end face of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion, and extends in a direction away from the region.
The water stop body
The conductor core wire which is composed of the water-stopping material capable of forming the water-stopping body through the arrangement and hardening of the water-stopping material having fluidity and is exposed to the end face and the region of the metal plate material constituting the connecting portion. Provided to isolate between
Electric wire with terminals. In the electric wire with a terminal according to claim 1,
The water stop body
It covers the conductor core wire exposed in the region and the end face of the metal plate material constituting the connecting portion, and is contained in the notch.
Electric wire with terminals. In the electric wire with a terminal according to claim 1 or 2.
The notch is
The tip portion has an inclined shape so as to be closer to the mounting surface on which the electric wire is to be mounted on the terminal fitting than the opening portion of the notch.
Electric wire with terminals. A terminal fitting made of a metal plate and attached to an electric wire.
The first barrel portion that is crimped to the conductor core wire that is exposed to the outside of the insulation coating at the end of the electric wire, and
A second barrel portion that is crimped to the insulating coating at the terminal of the electric wire and
A connecting portion connecting the first barrel portion and the second barrel portion,
It is provided with a notch that opens at the end surface of the metal plate material facing the region surrounded by the first barrel portion, the second barrel portion, and the connecting portion, and extends in a direction away from the region.
Terminal bracket.

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