JP2015049956A - Cable with terminal fitting, and terminal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable positioning a cutoff coating easily at an initial position without using an assembly table.SOLUTION: In a cable 10 with a terminal fitting, a terminal fitting 30 having a counterpart connection part 31 to be connected to a counterpart conductive member, a core wire connection part 37 to be connected to a core wire 21 exposed from the terminal of the insulating coating 22 of a cable 20, and a joining part 33 for horizontally joining a core wire connection part 37 to the counterpart connection part 31 is connected to the terminal of the cable 20. This cable includes a cylindrical heat-shrinkable tube 50 which sticks closely to the joining part 33 and the insulation coating 22 over the entire peripheries thereof by heat-shrinking it after positioning it at the initial position so as to cover the exposure range where the core wire 21 is exposed from the joining part 33 over to the insulation coating 22, and an initial position mark 39 for positioning the heat-shrinkable tube 50 at the initial position is provided in the joining part 33.

Description

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

  For example, as an electric wire with a terminal metal fitting in which a terminal metal fitting is connected to an end of the electric wire, one described in Patent Document 1 below is known. This electric wire with a terminal fitting has a conductive connection portion connected to another conductive member, a wire connection portion that is crimped to the core wire of the electric wire, and a connecting portion that connects the wire connection portion and the conductive connection portion in the front-rear direction. It has a terminal fitting, an electric wire to which the terminal fitting is connected, and a cylindrical heat-shrinkable tube that covers a portion to which the electric wire and the terminal fitting are connected. The wire connection part is crimped to the core wire exposed from the insulation coating at the end of the wire, and the exposed area where the core wire is exposed from the joint to the end of the insulation coating is covered with a heat-shrinkable tube to stop water, so that the core wire is immersed. Is preventing.

JP 2000-259883 A

  By the way, in order to stop the exposed area of the core wire with a waterproof coating such as a heat-shrinkable tube, first cover the entire exposed area with a waterproof coating, and then heat-shrink the waterproof coating to join and insulate. Water is stopped by bringing it into close contact with the coating. For this reason, in order to stop the exposed range of the core wire, it is important to position the waterproof coating at the initial position with respect to the exposed range, and to secure the adhesion allowance of the waterproof coating to the joint and the insulating coating, respectively. It becomes.

  As a positioning means in the front-rear direction of the waterproof coating, for example, a terminal fitting is arranged on an assembly base having a positioning portion, and the waterproof coating is applied to the exposed range of the core wire by bringing the waterproof coating into contact with the positioning portion. It is conceivable to position the at the initial position.

  However, according to the above method, when the waterproof coating is put on the exposed range of the core wire, the terminal fitting must be arranged on the assembly table, and workability is poor. However, if the exposed area of the core wire is covered with a waterproof coating without placing the terminal fittings on the assembly table, the initial position of the waterproof coating with respect to the exposed area will shift in the front-rear direction, and the waterproofing between the joint and the insulation coating will occur. There is a possibility that the adhesion allowance of the coating cannot be secured sufficiently.

  The present invention has been completed based on the above-described circumstances, and an object of the present invention is to make it possible to easily position the waterproof coating at the initial position without using an assembly table or the like.

  As means for achieving the above object, the present invention provides a counterpart connection portion connected to a counterpart conductive member, a core wire connection portion connected to a core wire exposed from an end of an insulation coating of the electric wire, and the core wire. A terminal fitting having a connecting portion connecting the connecting portion and the mating connecting portion in the front-rear direction is an electric wire with a terminal fitting formed by being connected to a terminal of an electric wire, and the core wire extends from the connecting portion to the insulating coating. A cylindrical water-stopping coating is disposed at an initial position so as to cover the exposed exposure area, and then contracted to tightly adhere to the connecting portion and the insulating coating over the entire circumference to stop the exposure range. And the connecting portion is characterized in that an initial position mark for positioning the waterproof coating at an initial position is provided.

  Further, the present invention is a terminal fitting connected to the end of the electric wire, the counterpart connection portion connected to the counterpart conductive member, and the core wire connection connected to the core wire exposed from the end of the insulation coating of the electric wire And a connecting portion that connects the core wire connecting portion and the counterpart connecting portion in the front-rear direction, and is cylindrical at an initial position that covers an exposed range where the core wire is exposed across the insulating coating from the connecting portion After the water-stop coating is disposed, the water-stop coating shrinks so that the connection portion and the insulating coating are in close contact with each other and the exposed range is stopped. A feature is that an initial position mark for positioning the waterproof coating at an initial position is provided.

  According to the electric wire with terminal fitting and the terminal fitting having such a configuration, the water stop covering can be easily positioned at the initial position by aligning the front end of the water stop covering in the front-rear direction with the initial position mark. Thereby, after shrinking the waterproof coating, it is possible to sufficiently secure the adhesion margin of the waterproof coating to the connecting portion and the insulating coating.

The following configuration is preferable as an embodiment of the present invention.
In the electric wire with terminal fitting, two of the initial position marks are arranged side by side in the front-rear direction, and are arranged on the rear side of the initial position mark in a state before the waterproof coating contracts. A rear side mark may be covered with the water stop coating, and the water stop cover may be positioned at the initial position by exposing a front side mark disposed on the front side of the initial position mark.
According to such a configuration, it is possible to easily confirm that the waterproof coating is positioned at the initial position only by confirming that only the front mark is exposed.

By the way, while providing only the rear side mark in the joint portion, it is possible to sufficiently secure the adhesion margin of the water stop coating to the joint portion and the insulating coating by lengthening the water stop coating in the front-rear direction. According to such a method, the waterproof coating is increased in size and the manufacturing cost is increased.
However, according to the above-described method, it is possible to sufficiently secure the adhesion margin of the waterproof coating to the connecting portion and the insulating coating only by providing the front side mark and the rear side mark on the connecting portion, and the manufacturing cost increases. This can be suppressed.

In the electric wire with a terminal fitting, the connecting portion is provided with a quality mark indicating that a tightness margin of the water blocking coating is secured with respect to the connecting portion after the water blocking coating contracts. It is good also as composition which has.
According to such a configuration, it is possible to easily determine whether or not an adhesion allowance for the waterproof coating is secured for the joint portion by confirming the quality mark.

In the electric wire with terminal fitting, the quality mark is provided behind the initial position mark, and the quality mark is covered with the water stop coating in a state after the water stop coating is contracted. It is good also as a structure by which the adhesion margin of the said water stop coating is ensured with respect to the said connection part.
According to such a configuration, it is possible to determine whether or not the adhesion margin between the joint portion and the water blocking coating is ensured only by confirming that the quality mark is not exposed from the water blocking coating.

In the above electric wire with terminal fitting, an adhesive layer made of an adhesive layer or an adhesive layer is formed on the inner peripheral surface of the waterproof coating, and the adhesive layer is connected when the waterproof coating contracts. It is good also as a structure adhere | attached on a part and the said insulation coating.
According to such a configuration, the exposed range can be reliably waterproofed by adhering the waterproof coating to the connecting portion and the insulating coating.

  In the terminal fitting, two initial position marks are provided in the front-rear direction on the connecting portion, and the front position mark located on the front side of the initial position mark and the rear position among the initial position marks. It is good also as a structure by which the said water stop coating is positioned in the initial position by arrange | positioning the front end of the said water stop coating between the rear side marks which are located.

  In the terminal fitting described above, the joint portion is secured to the joint portion by being covered with the water-stop coating after the water-stop coating is contracted. It is good also as a structure in which the quality mark which shows is provided.

  According to the present invention, the waterproof coating can be easily positioned at the initial position without using an assembly table or the like.

The top view of the electric wire with a terminal metal fitting concerning Embodiment 1 Side view The top view which shows the state before covering the exposure range of a core wire with a shrinkable tube A plan view showing a state in which the contraction tube is arranged at the initial position. Plan view of terminal fitting according to Embodiment 2 Plan view of terminal fitting according to Embodiment 3 Plan view of terminal fitting according to Embodiment 4

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the electric wire 10 with terminal metal fittings of the present embodiment stops the connecting portion between the electric wire 20, the terminal metal fitting 30 connected to the end of the electric wire 20, and the electric wire 20 and the terminal metal fitting 30. And a heat-shrinkable tube 50 (corresponding to “water-stop coating”) 50 that is watered. In the following description, the front-rear direction will be described with the right side in the figure as the front side and the left side in the figure as the rear side with reference to the left-right direction in FIG.

  As shown in FIG. 3, the electric wire 20 is composed of a core wire 21 made of aluminum or an aluminum alloy and an insulating coating 22 made of a synthetic resin that covers the outer periphery of the core wire 21. At the end of the electric wire 20, the core wire 21 is exposed by peeling off the insulating coating 22.

  As shown in FIGS. 2 and 3, the terminal fitting 30 is formed by pressing a metal plate made of copper or a copper alloy, and has a flat plate-like mating connection connected to a mating conductive member (not shown). The connection part 33 which connects the part 31, the electric wire connection part 32 connected to the terminal of the electric wire 20, and the other party connection part 31 and the electric wire connection part 32 in the front-back direction is comprised.

  The mating side connection portion 31 has a flat plate shape, and the mating side connection portion 31 is provided with a bolt insertion hole 34 penetrating in the thickness direction. For example, the mating side connection portion 31 is inserted through a bolt insertion hole 34 through a stud bolt (not shown) provided on the mating conductor, and tightens a nut (not shown) with respect to the stud bolt. It is electrically connected to the counterpart conductive member.

  An anti-rotation portion 36 that is bent downward is formed at the front end portion of the mating side connection portion 31. When the nut is fastened to the stud bolt, the rotation preventing portion 36 is engaged with an engaged portion (not shown) provided on the counterpart conductive member side so that the counterpart connection portion 31 rotates. To prevent you from doing.

  The electric wire connecting portion 32 is configured such that a core wire connecting portion 37 connected to the core wire 21 of the electric wire 20 and an insulation barrel 38 pressed against the insulating coating 22 of the electric wire 20 are arranged in the front-rear direction. The core wire connecting portion 37 has a form in which a pair of side plates 37B rises from both side edges of the bottom plate 37A in an opposing state, and the core wire 21 of the electric wire 20 is placed on the bottom plate 37A and subjected to ultrasonic welding. Thereby, the core wire connection part 37 and the core wire 21 are electrically connected. In the first embodiment, the core wire 21 and the core wire connecting portion 37 are connected by ultrasonic welding. However, the core wire 21 and the core wire connecting portion 37 may be connected by resistance welding or brazing.

  The insulation barrel 38 is configured such that a pair of barrel pieces 38B are provided on both side edges in the width direction of the bottom plate 38A. The insulation barrel 38 is fixed to the insulating coating 22 by crimping a pair of barrel pieces 38 </ b> B to the insulating coating 22.

  As shown in FIGS. 1 and 2, the heat-shrinkable tube 50 has a cylindrical shape and is made of a synthetic resin material that is heat-shrinkable by heat treatment. As shown in FIG. 4, the heat-shrinkable tube 50 has a substantially cylindrical shape as shown in FIG. 4, and the length of the heat-shrinkable tube 50 in the front-rear direction extends from the connecting portion 33 to the insulating coating 22. It is set as the magnitude | size which can cover the exposure range which the core wire 21 of the electric wire 20 exposes over a perimeter.

  An adhesive layer (not shown) is formed on the inner peripheral surface of the heat-shrinkable tube 50, and this adhesive layer is heated to be softened or melted to exhibit adhesiveness.

  The heat-shrinkable tube 50 is covered with the insulating coating 22 from the connecting portion 33 as shown in FIG. 4 and then thermally contracted by heat treatment. As shown in FIGS. 1 and 2, the insulating coating 22 is applied from the connecting portion 33. It adhere | attaches on the outer peripheral surface of this through the contact bonding layer. That is, the outer peripheral surface of the connecting portion 33 and the inner peripheral surface of the heat shrinkable tube 50 are in close contact with each other through the adhesive layer, and the outer peripheral surface of the insulating coating 22 and the inner peripheral surface of the heat shrinkable tube 50 are in contact with each other through the adhesive layer. The exposed range where the core wire 21 is exposed from the connecting portion 33 to the insulating coating 22 is stopped by the heat shrinkable tube 50 by the close contact.

  As described above, in the configuration in which the exposed range in which the core wire 21 is exposed from the connecting portion 33 to the insulating coating 22 is stopped by the heat shrinkable tube 50, the outer peripheral surface of the connecting portion 33 and the inner peripheral surface of the heat shrinkable tube 50 are assumed. In the case where the length dimension of the contact allowance that is closely attached is short, water or the like may enter from the interface between the heat shrinkable tube 50 and the connecting portion 33. In addition, if the length of the contact allowance in which the outer peripheral surface of the insulating coating 22 and the inner peripheral surface of the heat-shrinkable tube 50 are in close contact is short, water or the like may enter from the interface between the heat-shrinkable tube 50 and the insulating coating 22. There is. For this reason, as shown in FIG. 1, after the heat shrinkable tube 50 is heat shrunk, the front contact portion (“adhesion”) in which the outer peripheral surface of the connecting portion 33 and the inner peripheral surface of the heat shrinkable tube 50 are in close contact with each other. It is important that 51 (corresponding to “price”) is ensured to have a predetermined dimension, and that the back side contact portion 52 in which the outer peripheral surface of the insulating coating 22 and the inner peripheral surface of the heat shrinkable tube 50 are in close contact has a predetermined dimension. is there.

  Therefore, as shown in FIG. 3, the joint 33 of the terminal fitting 30 is thermally shrunk so that a predetermined size is secured in the front contact part 51 and the rear contact part 52 in the heat shrinkable tube 50 after heat shrinkage. An initial position mark 39 for determining whether or not the previous heat-shrinkable tube 50 is disposed at the initial position is provided. Further, a quality mark 40 is provided behind the initial position mark 39 of the connecting portion 33 to determine whether or not the front-side contact portion 51 has a predetermined dimension in the heat-shrinkable tube 50 after heat shrinkage.

  Two initial position marks 39 are arranged side by side in the front-rear direction, and each of them is formed in a concave shape in a round hole by, for example, pressing. The front side mark 39A arranged on the front side of the initial position mark 39 is a mark indicating the limit position where the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged on the foremost side. The rear side mark 39B disposed on the front side is a mark indicating the limit position where the front end position of the heat shrinkable tube 50 before heat shrinkage is disposed on the rearmost side. That is, as shown in FIG. 4, the heat shrinkable tube 50 is arranged at an initial position where the front end position of the heat shrinkable tube 50 before heat shrinkage is arranged in the region between the front mark 39A and the rear mark 39B. After the heat-shrinkable tube 50 is heat-shrinked, the front-side contact portion 51 and the rear-side contact portion 52 are ensured to have a predetermined dimension.

  The quality mark 40 is provided to be recessed in a round hole shape behind the rear mark 39B of the initial position mark 39. The quality mark 40 is set to be covered with the heat-shrinkable tube 50 when the heat-shrinkable tube 50 is heat-shrinked and the front contact portion 51 is secured to a predetermined size.

  That is, as shown in FIG. 1, after confirming that the quality mark 40 is covered with the heat-shrinkable tube 50 after the heat-shrinkable tube 50 is heat-shrinked, the front contact portion 51 of the heat-shrinkable tube 50 is predetermined. It can be determined that the dimensions have been secured. In addition, it can be determined that the rear-side contact portion 52 has a predetermined dimension by confirming that the front end position of the heat-shrinkable tube 50 is disposed behind the front mark 39A of the initial position mark 39. That is, by checking the quality mark 40 and the front mark 39A, it is possible to determine whether or not the exposed range where the core wire 21 is exposed from the connecting portion 33 to the insulating coating 22 is stopped.

  The electric wire 10 with a terminal metal fitting of this embodiment is the above structures, Comprising: While briefly explaining the method of assembling the electric wire 10 with a terminal metal fitting, the effect is demonstrated.

  First, the electric wire 20 is placed on the bottom plate 37A of the core wire connecting portion 37 in the terminal fitting 30, and the core wire 21 of the electric wire 20 is connected to the core wire connecting portion 37 by ultrasonic welding or the like as shown in FIG. The compression barrel 38 is crimped to the insulating coating 22 of the electric wire 20.

  Next, as shown in FIG. 4, the heat-shrinkable tube 50 in a state before heat-shrinking is put on the area where the core wire 21 is exposed from the connecting portion 33 to the insulating coating 22, and the heat-shrinkable tube 50 is heated by heat treatment. Heat shrink. Thereby, as shown in FIG. 1 and FIG. 2, the electric wire 10 with a terminal metal fitting in which the range in which the core wire 21 is exposed is stopped by the heat shrinkable tube 50 is completed.

  Here, if the front-side contact portion where the outer peripheral surface of the joint portion 33 and the inner peripheral surface of the heat-shrinkable tube 50 are in close contact with each other is shorter than a predetermined dimension, the interface between the heat-shrinkable tube 50 and the joint portion 33. There is a risk of water intrusion. Even if the rear contact portion where the outer peripheral surface of the insulating coating 22 and the inner peripheral surface of the heat-shrinkable tube 50 are in close contact with each other is shorter than a predetermined dimension, the interface between the heat-shrinkable tube 50 and the insulating coating 22. There is a risk of water intrusion.

  However, according to the present embodiment, since the initial position mark 39 is provided in the connecting portion 33, the front end position of the heat-shrinkable tube 50 is arranged in the region between the front mark 39A and the rear mark 39B. By disposing the heat-shrinkable tube 50 at the initial position, it is possible to secure a predetermined dimension between the front-side contact portion 51 and the rear-side contact portion 52 after the heat-shrinkable tube 50 is thermally contracted.

  By the way, even if the heat-shrinkable tube 50 is properly arranged at the initial position before the heat treatment, if the heat-shrinkable tube 50 is misaligned in the heat treatment process, the heat-shrinkable tube 50 is heat-shrinked and then the front contact portion There is a possibility that a predetermined dimension cannot be secured between the rear contact portion and the rear contact portion.

  However, according to the present embodiment, by confirming that the quality mark 40 provided on the connecting portion 33 is covered with the heat shrinkable tube 50, the front side close contact portion 51 of the heat shrinkable tube 50 has been secured with a predetermined dimension. You can determine whether or not. Thereby, the quality of the water stop process of the electric wire 10 with a terminal metal fitting can be confirmed easily.

  As described above, according to the first embodiment, since the initial position mark 39 is provided in the connecting portion 33, the heat-shrinkable tube 50 can be easily disposed at the initial position, and the heat-shrinkable tube 50 is thermally contracted. After that, it is possible to secure a predetermined dimension between the front contact portion 51 and the rear contact portion 52.

By the way, it is also possible to secure a predetermined allowance for the heat-shrinkable tube with respect to the connecting portion and the insulating coating by providing only a rear mark on the connecting portion and making the heat-shrinkable tube long in the front-rear direction. . However, according to such a method, since the heat shrinkable tube has to be enlarged in the front-rear direction, the manufacturing cost increases.
However, according to the first embodiment, after the heat shrinkable tube 50 is properly disposed at the initial position and the heat shrinkable tube 50 is heat shrunk only by providing the initial position mark 39 in the connecting portion 33 by press working or the like. Since the front side contact part 51 and the rear side contact part 52 can ensure predetermined dimensions, an increase in manufacturing cost can be suppressed.

  In addition, after the heat treatment, it is possible to easily determine whether the water stop treatment of the electric wire 10 with terminal fittings is good or not simply by confirming whether or not the quality mark 40 is exposed. ????

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG.
In the second embodiment, the shapes of the initial position mark 39 and the quality mark 40 in the terminal fitting 30 of the first embodiment are changed, and since the configurations, operations, and effects common to the first embodiment are duplicated, Description is omitted. The same reference numerals are used for the same configurations as those in the first embodiment.

  The initial position mark 139 in the terminal fitting 130 of the second embodiment is formed in a triangular shape having apexes on both sides in the width direction on the front side and on the rear side. In the initial position mark 139, the position of the front side 139A (corresponding to the “front mark”) 139A located at the front end is a mark indicating the limit position where the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged in the foremost position. A rear apex (corresponding to a “rear mark”) 139B located on the rear side is a mark indicating a limit position where the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged at the rearmost position. That is, by arranging the heat shrink tube 50 before heat shrink so that the front end position of the heat shrink tube 50 before heat shrink is arranged between the front side 139A and the rear vertex 139B, the heat shrink tube 50 is A predetermined dimension can be secured for the front contact portion 51 and the rear contact portion 52 after heat shrinkage.

  Further, the quality mark 140 is formed in a triangular shape having apexes on both sides in the width direction on the rear side and the front side so as to face the initial position mark 139. After the heat shrinkable tube 50 is heat-shrinked, the quality mark 140 is formed. By confirming that 140 is covered with the heat-shrinkable tube 50, it can be determined that the predetermined size of the front contact portion 51 of the heat-shrinkable tube 50 is secured.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG.

  In the third embodiment, the shapes of the initial position mark 39 and the quality mark 40 in the terminal fitting 30 of the first embodiment are changed, and since the configurations, operations, and effects common to the first embodiment are duplicated, Description is omitted. The same reference numerals are used for the same configurations as those in the first embodiment.

  The initial position mark 239 in the terminal fitting 230 according to the third embodiment includes a linear front mark 239A extending in the width direction and a straight rear mark 239B extending backward from the center in the width direction of the front mark 239A. .

  The front mark 239A is a mark indicating a limit position where the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged in the foremost position, and the rear end position of the rear mark 239B is the front end of the heat-shrinkable tube 50 before heat shrinkage. The position is a mark indicating a limit position where the position is most rearward. That is, by disposing the heat-shrinkable tube 50 before heat shrink so that the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged between the front mark 239A and the rear mark 239B, A predetermined dimension can be secured for the front contact portion 51 and the rear contact portion 52 after heat shrinkage.

  The quality mark 240 is a linear mark extending in the width direction centering on the rear end of the rear mark 239B. After the heat shrinkable tube 50 is thermally contracted, the quality mark 240 is formed on the heat shrinkable tube 50. By confirming that the heat-shrinkable tube 50 is covered, it can be determined that the predetermined size of the front contact portion 51 of the heat-shrinkable tube 50 is secured.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the fourth embodiment, the shapes of the initial position mark 39 and the quality mark 40 in the terminal fitting 30 of the first embodiment are changed, and since the configurations, operations, and effects common to the first embodiment are duplicated, Description is omitted. The same reference numerals are used for the same configurations as those in the first embodiment.

  The initial position mark 339 in the terminal fitting 330 according to the fourth embodiment includes a linear front mark 339A extending in the width direction and a straight rear mark 339B extending in the width direction behind the front mark 339A.

  The front mark 339A is a mark indicating a limit position where the front end position of the heat-shrinkable tube 50 before heat shrinkage is disposed most forward, and the rear mark 339B is the rearmost position of the heat-shrinkable tube 50 before heat shrinkage. It is used as a mark indicating a limit position to be placed on the screen. That is, by disposing the heat-shrinkable tube 50 before heat shrink so that the front end position of the heat-shrinkable tube 50 before heat shrinkage is arranged between the front mark 339A and the rear mark 339B, A predetermined dimension can be secured for the front contact portion 51 and the rear contact portion 52 after heat shrinkage.

  The quality mark 340 is provided in a form extending linearly in the width direction behind the rear mark 339B, and is configured as three lines together with the initial position mark 339. Then, after the heat-shrinkable tube 50 is heat-shrinked, it is determined that the front side contact portion 51 of the heat-shrinkable tube 50 has a predetermined dimension by confirming that the quality mark 340 is covered with the heat-shrinkable tube 50. It can be done.

<Other embodiments>
The present invention is not limited to the first to fourth 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 first to fourth embodiments, the terminal metal fitting 30 connected to the mating conductive member by a bolt and a nut is used as the terminal metal fitting. However, the present invention is limited to such an embodiment. For example, a female terminal fitting or a male terminal fitting may be used as the terminal fitting.

  (2) In the first to fourth embodiments, the core wire connecting portion 37 and the core wire 21 of the electric wire 20 are connected by ultrasonic welding. However, the present invention is not limited to such an embodiment. For example, you may make it the structure which crimps | bonds and connects a core wire connection part and a core wire with a pair of barrel provided in the core wire connection part.

  (3) In the first to fourth embodiments described above, the quality marks 40, 140, 240, and 340 are provided in the connecting portion 33 in addition to the initial position marks 39, 139, 239, and 339. Is not limited to such a mode, and for example, only the initial position mark may be provided in the connecting portion.

  (4) In Embodiments 1 to 4, the adhesive layer is formed on the inner peripheral surface of the heat-shrinkable tube 50. However, the present invention is not limited to such an embodiment. The adhesive layer may be formed on the inner peripheral surface of the heat shrinkable tube.

10: Electric wire with terminal fitting 20: Electric wire 22: Insulation coating 21: Core wire 30, 130, 230, 330: Terminal fitting 31: Mating side connection part 32: Core wire connection part 33: Connecting part 39, 139, 239, 339: Initial stage Position mark 39A, 239A, 339A: Front mark 39B, 239B, 339B: Rear mark 139A: Front side (front mark)
139B: Rear vertex (rear marker)
40, 140, 240, 340: Quality mark 50: Heat shrinkable tube (waterproof coating)
51: Front adhesion part (adhesion allowance)

Claims (8)

A mating connection part connected to the mating conductive member, a core wire connection part connected to the core wire exposed from the end of the insulation coating of the electric wire, and a connection connecting the core wire connection part and the mating connection part in the front-rear direction. A terminal fitting having a portion connected to the terminal of the electric wire,
After being arranged at an initial position so as to cover the exposed range where the core wire is exposed from the joint portion to the insulating coating, the exposed portion is in close contact with the joint portion and the insulating coating by contraction. It has a cylindrical water-stop coating that stops the water
An electric wire with a terminal fitting provided with an initial position mark for positioning the waterproof coating at an initial position at the connecting portion. The initial position markers are arranged side by side in the front-rear direction,
In a state before the waterproof coating is contracted, a rear side mark disposed on the rear side of the initial position mark is covered by the water stop cover, and a front side mark disposed on the front side of the initial position mark is The electric wire with a terminal fitting according to claim 1, wherein the waterproof coating is positioned at an initial position by being exposed.   The said joint part is provided with the quality mark which shows that the adhesion margin of the said joint part and the said water stop coating is ensured after the said water stop coating shrink | contracts. Electric wire with terminal fittings. The quality mark is provided behind the initial position mark,
The terminal fitting according to claim 3, wherein in the state after the waterproof coating has shrunk, the quality mark is covered with the waterproof coating, thereby ensuring a tight margin between the joint and the waterproof coating. Electrical wire. An adhesive layer is formed on the inner peripheral surface of the waterproof coating,
The said contact bonding layer is an electric wire with a terminal metal fitting as described in any one of Claim 1 thru | or 4 which adheres to the said connection part and the said insulation coating, when the said water stop coating shrink | contracts. A terminal fitting connected to the end of the electric wire,
A mating connection part connected to the mating conductive member;
A core wire connecting portion connected to the core wire exposed from the end of the insulation coating of the electric wire;
A connecting portion connecting the core wire connecting portion and the counterpart connecting portion in the front-rear direction;
After disposing the tubular waterproof coating at an initial position covering the exposed range where the core wire is exposed across the insulating coating from the connecting portion, the connecting portion and the insulating coating are contracted by shrinking the waterproof coating. In the case where the entire exposed area is in close contact and the exposure range is stopped,
A terminal fitting provided with an initial position mark for positioning the waterproof coating at an initial position at the joint portion. The initial position mark is provided side by side in the front-rear direction at the connecting portion,
The water-stop coating is positioned at an initial position by disposing a front end of the water-stop cover between a front mark positioned on the front side of the initial position mark and a rear mark positioned on the rear side of the initial position mark. The terminal fitting according to claim 6, wherein the terminal fitting is positioned at a position.   The joint portion is provided with a quality mark indicating that an adhesion allowance between the joint portion and the water blocking coating is ensured by being covered with the water blocking coating after the water blocking coating contracts. The terminal metal fitting according to claim 6 or claim 7.

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