JP6598654B2 - Electric wire with terminal - Google Patents

Description

  The present invention relates to an electric wire with a terminal, and more particularly to an open barrel type electric wire with a terminal.

  Conventionally, electric wires with a terminal are roughly classified into a closed barrel type and an open barrel type according to the form of a crimp terminal for crimping a covered electric wire.

  A closed barrel type electric wire with a terminal has a crimping part formed in a cylindrical shape, and after inserting the tip of the covered electric wire with the conductive wire exposed, the crimping part is reduced in the direction of diameter reduction. It is plastically deformed and crimped.

  On the other hand, the open barrel type electric wire with terminal has a U-shaped crimping terminal having an open top, and the end of the covered electric wire, in which the wire is exposed from the insulating coating, is inserted into the crimping terminal. Thereafter, the crimping pieces of the crimping terminals are bent inward so as to be close to each other, and the wire material and the coating material of the covered electric wire are respectively crimped.

  In particular, the crimp terminal of the open barrel type terminal-attached electric wire is a part that crimps the wire rod exposed from the covering material of the covered electric wire with the crimping piece, and a part that crimps the covering material with the crimping piece. It has an insulation barrel part and a transition part provided as a transition part between the wire barrel part and the insulation barrel part. The transition part is a part of a crimp terminal provided when a plate material, which is a material of the crimp terminal, is punched to form a wire barrel part and an insulation barrel part.

  FIG. 5 is a cross-sectional view of the transition portion 200 of the crimp terminal. In the transition part 200 of the crimp terminal, a part of the wire 210 exposed from the tip end portion of the covered electric wire is exposed to the outside without being crimped, and corrosion occurs when moisture adheres to the exposed wire 210. In order to prevent such corrosion, the anticorrosive resin (hereinafter also referred to as “anticorrosive”) 220 is applied and coated on the wire 210 exposed in the transition portion 200. .

  However, in this case, in the transition part 200, the resin 220 passes through the gap between the transition part 200 and the wire 210, or the gap between the wire 210, and flows down in the vertical direction indicated by the arrow as time passes. Thereafter, a large amount of the resin 220 flows through the bottom surface of the transition part 200 to the insulation barrel part side in the depth direction in the drawing orthogonal to the vertical direction.

  As a result, the coating on the wire 210 with the resin 220 becomes insufficient, and a pinhole is generated in the coating portion. Therefore, in order to improve such a situation, it is necessary to increase the amount of the resin 220 applied to the wire 210, and it takes a long time to cure the resin 220 as the amount of application increases.

  On the other hand, on the rear end portion side of the wire barrel, which is the insulation barrel side, a concave small rear storage portion surrounded by the tip portions facing each other of the pair of left and right insulation barrel pieces and the upper portion of the covering material An electric wire with an anticorrosion terminal that prevents electric corrosion by dropping and sealing a resin (anticorrosive agent) on the rear reservoir is proposed (for example, see Patent Document 1).

JP 2014-179259 A

  However, the electric wire with the anticorrosion terminal disclosed in Patent Document 1 is such that the wire barrel and the insulation barrel of the terminal are continuously formed without any break, and there is no transition portion. For this reason, there is a problem that the invention of Patent Document 1 cannot be applied to a general open barrel type terminal-attached electric wire in which a transition portion is provided between the wire barrel portion and the insulation barrel portion. It was.

  The present invention has been made in view of the above problems, and its purpose is to apply a small amount of wire exposed at a transition portion provided between a conductor crimping portion and a covering crimping portion in an open barrel type terminal. It is providing the electric wire with a terminal sealed with resin.

  In order to achieve the above-described object, the present invention provides a covered electric wire having an insulating covering material and a conductive wire exposed from the peeled end surface of the covering material when the covering material is peeled from the tip side. A part of the covering material and a part of the wire are exposed between the conductor crimping part for crimping the wire, a coating crimping part for crimping the covering material, and the conductor crimping part and the coating crimping part. Formed by a terminal having a transition portion formed so as to be formed, an end surface of the conductor crimping portion on the side of the coating crimping portion, the peeling end surface of the coating material, and a surface of the wire exposed at the transition portion. The storage part which consists of made space, and the anti-corrosion material formed in the said storage part are provided.

  In the present invention, the peeling end surface of the covering material is disposed so as to be interposed between the inner bottom surface of the terminal and the wire at an arbitrary position within a range where the crimping force of the conductor crimping portion reaches the peeling end surface. You may be made to do.

  In this invention, you may make it the said peeling end surface of the said coating | covering material arrange | position at the said position contact | abutted with the end surface by the side of the said crimping | compression-bonding part in the said conductor crimping | compression-bonding part.

  In the present invention, the peeling end surface of the covering material is an inclined surface inclined by a predetermined angle with respect to the axis of the covering material, and a part of the inclined surface presses the wire material at the conductor crimping portion. You may make it arrange | position so that it may intervene between the bottom face inside the terminal currently provided, and the said wire.

  In the present invention, the transition portion of the transition portion is brought into contact with the end surface of the conductor crimping portion, the peeling end surface of the covering material disposed in the vicinity of the contact position contacting the end surface, and the surface of the wire. You may make it provide the weir part formed in convex shape toward the perpendicular upper direction from the edge.

  In the present invention, the anticorrosion material may be made of a resin, and the dam portion may be made of a second resin having lower fluidity than a resin used for the anticorrosion material.

  In the present invention, the second resin of the weir portion has a molecular weight larger than that of the resin.

  According to the electric wire with terminal of the present invention, the electric wire with terminal in which the wire exposed in the transition portion provided between the conductor crimping portion and the covering crimping portion in the open barrel type terminal is sealed with a small amount of resin. Can be realized.

It is an external appearance perspective view which shows the whole structure of the electric wire with a terminal which concerns on 1st Embodiment. It is the longitudinal cross-sectional view which shows the structure of the storage part in 1st Embodiment, and a cross-sectional view. It is the longitudinal cross-sectional view and cross-sectional view which show the structure of the storage part in 2nd Embodiment. It is the longitudinal cross-sectional view and cross-sectional view which show the structure of the storage part in 3rd Embodiment. It is sectional drawing with which it uses for description of the flow of resin (anticorrosion material) in the transition part of the conventional electric wire with a terminal.

  Hereinafter, the first to third embodiments of the present invention will be described with reference to the drawings. In addition, the 1st thru | or 3rd embodiment demonstrated below is an illustration to the last, and can take a various form in the scope of the present invention.

<First Embodiment>
<Configuration of electric wire with terminal>
Drawing 1 is an outline perspective view showing electric wire 1 with a terminal concerning a 1st embodiment. FIG. 1 (A) is an exploded perspective view before the covered electric wire 2 and the terminal 5 are crimped and connected, and FIG. 1 (B) is from the base end side after the covered electric wire 2 and the terminal 5 are crimped and connected. FIG.

  In FIG. 1, the extending direction along the axis CL of the covered electric wire 2 is defined as “X direction”. Further, the crimping side of the terminal 5 with respect to the covered electric wire 2 is defined as “arrow X1 side (rear end side)” and the non-crimping side is defined as “arrow X2 side (tip end side)”.

  The terminal-attached electric wire 1 includes a covered electric wire 2 and a terminal 5. The covered electric wire 2 has a conductive wire (hereinafter also referred to as “conductor”) 3 in which a plurality of strands 3 a are bundled, and an insulating covering 4 that covers the wire 3. ing.

  The wire 3 is a stranded wire obtained by twisting a plurality of strands 3a. The strand 3a is formed of a metal material made of, for example, aluminum, an aluminum alloy, copper, or a copper alloy. The wire 3 is not limited to a stranded wire but may be a single wire.

  The covering material 4 is formed of an insulating material that covers the wire 3 from the outside. The covering material 4 is made of, for example, an insulating resin including polyvinyl chloride (PVC) and cross-linked polyethylene. The covering material 4 may be of any material as long as it is an insulating substance that covers the wire 3 from the outside.

  Further, the tip of the covering material 4 on the arrow X2 side forms a peeling end surface 4a along a plane orthogonal to the axis CL. The covered electric wire 2 includes an exposed portion 2a where only the wire 3 is exposed from the peeled end face 4a toward the arrow X2 side, and a covered portion 2b which is the remaining portion excluding the exposed portion 2a. The peeling end surface 4a is a boundary surface between the exposed portion 2a and the covering portion 2b, and is a surface that is generated as a result of the tip side of the covering material 4 being cut and peeled along a plane perpendicular to the axis CL.

  The terminal 5 is an open barrel type female crimp terminal, and includes a crimp part 10 and a connection part 13 for crimping the wire 3 and the covering material 4. The terminal 5 is not limited to a female crimp terminal, and may be a male crimp terminal. Further, the terminal 5 includes a transition portion 14 between the crimping portion 10 and the connection portion 13 for mechanically and electrically connecting both. That is, the terminal 5 has a configuration in which the crimping part 10, the connection part 13, and the transition part 14 are integrated. The terminal 5 is made of a copper alloy strip such as brass whose surface is tin-plated (Sn-plated).

  The connecting portion 13 has a hollow quadrangular prism shape, and includes an elastic contact piece 13a that contacts an insertion tab included in a male crimp terminal (not shown) and receives the insertion of the insertion tab.

  The crimping part 10 includes a conductor crimping part 11 (wire barrel part) and a covering crimping part 12 (insulation barrel part). Moreover, the crimping | compression-bonding part 10 is provided between the conductor crimping | compression-bonding part 11 and the covering crimping | compression-bonding part 12, and the transition part 15 of the predetermined | prescribed length which has connected both mechanically and electrically. In order to distinguish between the transition unit 14 and the transition unit 15 described above, hereinafter, the transition unit 14 is referred to as a front transition unit 14 and the transition unit 15 is referred to as a rear transition unit 15.

  The conductor crimping part 11 is a part that crimps the exposed part 2a of the covered electric wire 2 (exposed part of the wire (conductor) 3). The conductor crimping portion 11 includes crimping pieces 11a and 11b each having a substantially U-shaped opening in a cross section orthogonal to the X direction. The crimping pieces 11a and 11b are formed to be bent inward so as to face each other when crimping the exposed portion 2a of the covered electric wire 2. Thus, the exposed portion 2a of the covered electric wire 2 is crimped to the terminal 5 at the conductor crimping portion 11 by the crimping pieces 11a and 11b (FIG. 1B).

  The coated crimping part 12 is a part for crimping the coated part 2 b of the coated electric wire 2. The cover crimping portion 12 includes crimping pieces 12a and 12b having a shape in which an upper portion is opened in a substantially U shape in a cross section orthogonal to the X direction. The crimping pieces 12a and 12b are formed so as to be bent inward so as to face each other when the coated wire 2 is crimped to the covering portion 2b. Thus, the covering portion 2b of the covered electric wire 2 is crimped to the terminal 5 at the covering crimping portion 12 by the crimping pieces 12a and 12b (FIG. 1B).

  As shown in FIG. 2A, after crimping the exposed portion 2a of the covered wire 2 by the conductor crimping portion 11, a tip surface 11f is formed on the arrow X2 side (tip side) of the conductor crimping portion 11, and the arrow A rear end surface 11r is formed on the X1 side (rear end side).

  The tip surface 11f is an end surface along a plane orthogonal to the X direction at the end of the conductor crimping portion 11 on the arrow X2 side (tip side) (hereinafter also referred to as “tip portion”). The rear end surface 11r is an end surface substantially along a plane orthogonal to the X direction at the end of the conductor crimping portion 11 on the arrow X1 side (rear end side) (hereinafter also referred to as “rear end portion”). is there. However, the rear end surface 11r is slightly inclined toward the arrow X2 as a whole by the crimping force of the conductor crimping portion 11 against the exposed portion 2a of the covered electric wire 2. Incidentally, the rear end portion including the rear end surface 11r of the conductor crimping portion 11 is a so-called “bell mouth”.

  After the crimping portion 12 is crimped to the covering portion 2b of the covered electric wire 2, a leading end surface 12f is formed on the arrow X2 side (tip end side) of the covering crimping portion 12, and a trailing end surface 12r is formed on the arrow X1 side (rear end side). (FIG. 1B) is formed.

  The rear transition portion 15 (FIG. 1A) is a portion opened upward between the rear end surface 11 r of the conductor crimping portion 11 and the front end surface 12 f of the covering crimping portion 12. The rear transition portion 15 includes concave step portions that are lower than the crimping pieces 11a and 11b of the conductor crimping portion 11 and the crimping pieces 12a and 12b of the covering crimping portion 12. The rear transition portion 15 has side wall end edges 15 a and 15 b arranged in parallel with each other along the axis CL, and the end edges 15 a and 15 b form a step portion of the rear transition section 15.

  After the covered wire 2 is crimped by the conductor crimping portion 11, a front wire opening 14 s is formed in the front transition portion 14. The front electric wire opening 14s is a portion surrounded by the front end surface 11f of the conductor crimping portion 11, the rear end surface 13r of the connecting portion 13, and the edges 14a and 14b of the front transition portion 14. The front electric wire opening 14s is an opening that exposes the tip of the exposed portion 2a (conductor 3) of the covered electric wire 2.

  In the front electric wire opening 14s, the exposed portion 2a (conductor 3) of the covered electric wire 2 is sealed with the tip portion covered with the resin 40f as an anticorrosive material, so that intrusion of moisture from the outside is prevented. . Here, as the resin 40f, for example, any resin material of silicon, acrylic, urethane, polyamide, epoxy, fluorine, polyvinyl butyral, phenol, polyimide, and acrylic rubber can be used. It can be configured as a main component.

  Further, after the covered wire 2 is crimped by the covered crimp portion 12, a rear wire opening 15 s is formed in the rear transition portion 15. The rear wire opening 15 s is a portion surrounded by the rear end surface 11 r of the conductor crimping portion 11, the distal end surface 12 f of the covering crimping portion 12, and the edges 15 a and 15 b of the rear transition portion 15. The rear wire opening 15s is an opening formed so as to expose a part of the exposed part 2a (conductor 3) and a part of the covering part 2b with the peeling end face 4a of the covering material 4 as a boundary.

  In the rear wire opening 15s, an exposed portion 2a (conductor 3) partially exposed from between the rear end surface 11r of the conductor crimping portion 11 and the covering portion 2b of the covered electric wire 2 is a resin 40r (corrosion-proof material). The storage part K1 (FIG. 2) for sealing by FIG. 2) is provided. The resin 40f sealed in the front wire opening 14s and the resin 40r sealed in the rear wire opening 15s have the same characteristics. However, the present invention is not limited to this, and the characteristics of the resin 40f and the characteristics of the resin 40r may be different.

<Configuration of storage unit>
As shown in FIGS. 2A to 2C, in the rear transition portion 15, a position at which the peeling end surface 4 a of the covering material 4 contacts the rear end surface 11 r of the conductor crimping portion 11 (hereinafter referred to as “contact position”). The said covering | covering material 4 is arrange | positioned. In this state, when the exposed portion 2a and the covering portion 2b of the covered electric wire 2 are crimped by the conductor crimping portion 11 and the covering crimping portion 12, the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 4a of the covering material 4, A storage portion K1 is formed by a part of the surface of the exposed portion 2a (conductor 3) exposed in the rear transition portion 15.

  Specifically, the exposed portion 2a (conductor 3) of the covered electric wire 2 is crushed by the crimping force of the conductor crimping portion 11, and the crimping force of the conductor crimping portion 11 on the exposed portion 2a (conductor 3) is It extends to the conductor 3 of 2b and is strongly pulled vertically downward. For this reason, the conductor 3 is partially separated from the covering portion 2b in the vicinity of the peeling end face 4a.

  As a result, the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 4a of the covering material 4, and the part of the surface of the conductor 3 exposed away from the covering portion 2b in the rear transition portion 15 are stored for resin storage. Part K1 is formed. That is, the storage part K1 is a space constituted by the rear end face 11r of the conductor crimping part 11, the peeling end face 4a of the covering material 4, and a part of the surface of the conductor 3 exposed away from the covering part 2b. .

  The location of the covering material 4 is not necessarily the contact position where the peeling end surface 4a of the covering material 4 comes into contact with the rear end surface 11r of the conductor crimping portion 11, and the arrow X1 side from the contact position. The covering material so that the peeling end surface 4a of the covering material 4 is located at a position (hereinafter, also referred to as “non-contact position”) indicated by the BB ′ cross section slightly separated from the rear end side. 4 can be arranged.

  In the non-contact position shown in the BB ′ cross section, the crimping force of the conductor crimping portion 11 reaches the coating material 4 and crushes the covering portion 2b in contact with the inner bottom surface of the rear transition portion 15. It is a position that is possible to the maximum from the contact position to the arrow X1 side (rear end side). That is, if it is a non-contact position shown by a BB 'cross section, since the crimping force of the conductor crimping part 11 reaches the covering material 4 and the covering part 2b is crushed, the sealing performance by the covering part 2b is exhibited. Is possible. Therefore, the peeling end surface 4a of the covering material 4 is formed on the inner bottom surface of the terminal 5 and the wire at an arbitrary position from the contact position where the crimping force of the conductor crimping portion 11 reaches the peeling end surface 4a to the non-contact position described above. It is desirable to be disposed so as to be interposed between the (conductor) 3 and the peeling end surface 4a of the covering material 4 is disposed at a position further away from the non-contact position toward the arrow X1 side (rear end side). That is not preferable.

<Action and effect>
As described above, the storage portion K1 formed in the rear wire opening 15s of the rear transition portion 15 is disposed at a contact position where the peeling end surface 4a of the covering material 4 contacts the rear end surface 11r of the conductor crimping portion 11. After that, it is easily formed as an extremely small storage space simply by being crimped.

  Thereby, compared with the conventional electric wire with a terminal in which the covering material 4 is arranged at a position far away from the rear end surface 11r of the conductor crimping part 11, the capacity of the resin 40r applied to the storage part K1 is reduced and the capacity is small. The conductor 3 exposed at the rear transition portion 15 can be efficiently sealed with the resin 40r. Thus, it is possible to prevent moisture from entering from the outside by the resin 40r of the reservoir K1.

  Note that the peeling end surface 4 a of the covering material 4 is an end surface along a surface orthogonal to the axis CL of the covering material 4, so that the gap between the rear end surface 11 r of the conductor crimping portion 11 and the peeling end surface 4 a of the covering material 4 is obtained. The opening of the storage part K1 becomes narrow, and the leakage of the resin 40r stored in the storage part K1 can be prevented.

  In this case, as shown in the AA ′ cross section of FIG. 2B and the BB ′ cross section of FIG. 2C, the peeling end surface 4a of the covering material 4 contacts the rear end surface 11r of the conductor crimping portion 11. In the vicinity of the contact position, the vertically lower portion of the covering portion 2b on the arrow X2 side (tip end side) is crushed and closely adhered between the conductor 3 and the bottom surface inside the rear transition portion 15. For this reason, when the resin 40r is applied to the storage portion K1, the covering portion 2b can prevent the resin 40r from flowing into the arrow X1 side (rear end side) of the rear transition portion 15. Thus, the application amount of the resin 40r can be significantly reduced compared to the conventional case, the risk of pinholes and the like occurring on the surface of the coating portion by the resin 40r can be reduced, and the conductor 3 can be efficiently sealed with much less resin 40r. it can.

  Moreover, since the vertically lower part in the circumferential direction of the covering portion 2 is crushed and closely adhered between the conductor 3 and the bottom surface inside the rear transition portion 15, the arrow X1 side (rear end side) of the rear transition portion 15 It is also possible to prevent moisture from entering from the outside toward the arrow X2 side (front end side) by the covering portion 2b.

<Second Embodiment>
As shown in FIGS. 3A to 3C, the terminal-attached electric wire 50 according to the second embodiment has the same configuration and operational effects because the terminal 5 is common to the first embodiment. Will be omitted, and only the covered electric wire 52 and the storage portion K2 different from the first embodiment will be described.

  The covering material 4 of the covered electric wire 52 according to the second embodiment includes a peeling end surface 52a formed of an inclined surface inclined by a predetermined angle (for example, 90 degrees or less) with respect to the axis CL. The covered electric wire 52 includes an exposed portion 2a where only the wire 3 is exposed from the peeled end face 52a toward the arrow X2 side (tip side), and a covered portion 2b which is the remaining portion excluding the exposed portion 2a. Yes. The peeling end surface 52a forms a boundary surface between the exposed portion 2a and the covering portion 2b, and is a surface generated as a result of the cutting and peeling of the covering material 4 along a surface inclined at a predetermined angle with respect to the axis CL.

  In this covered electric wire 52, the peeling end surface 52 a is between the bottom surface inside the rear transition portion 15 and the conductor 3 in the vicinity of the contact position where the conductor crimping portion 11 is in contact with the rear end surface 11 r. It is arrange | positioned in the state in which the direction of the circumferential direction of the covered electric wire 52 was adjusted so that it might jump out to the side.

  In the rear wire opening 15s of the rear transition portion 15, the portion of the conductor 3 exposed from the covering portion 2b of the covered electric wire 52 arranged in a state in which the circumferential direction is adjusted is sealed with a resin (corrosion protection material) 40r. The storage part K2 (FIG. 2) for resin storage for performing is provided.

  Specifically, a storage portion K2 for resin storage is formed by the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 52a of the covering material 4, and the surface of the conductor 3 exposed from the covering portion 2b in the rear transition portion 15. Is done. That is, the storage portion K2 is a space constituted by the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 52a of the covering material 4, and the surface of the conductor 3 exposed from the covering portion 2b.

  In this case as well, the location of the covering material 4 is not necessarily in the vicinity of the contact position, and BB slightly separated from the vicinity of the contact position toward the arrow X1 side (rear end side). It is also possible to arrange the covered electric wire 52 so that the peeling end surface 52a of the covering material 4 is positioned with respect to the non-contact position shown in the cross section.

  That is, if the crimping force of the conductor crimping part 11 reaches the covering material 4 and can crush the end part of the covering part 2b including the peeled end surface 52a, the non-contact position shown in the BB ′ cross section can be obtained. You may arrange | position the covered electric wire 52 so that the peeling end surface 52a may be located. Also in this case, since the crimping force of the conductor crimping part 11 reaches the covering material 4 and the covering part 2b is crushed, it is possible to exhibit the sealing performance by the covering part 2b.

  Incidentally, when the peeling end surface 52a of the covered electric wire 52 is disposed at a contact position where the peeling end surface 52a contacts the rear end surface 11r of the conductor crimping portion 11, the vertical lower portion of the peeling end surface 52a is closer to the arrow X2 side (front end side) than the contact position. It will be in a state of jumping out toward. However, even in this case, there is no problem because the covering portion 2b is crushed under the influence of the crimping force of the conductor crimping portion 11 and the sealing performance is ensured.

  As described above, the storage portion K2 formed in the rear wire opening 15s is disposed in the vicinity of the contact position where the peeling end surface 52a of the covering material 4 contacts the rear end surface 11r of the conductor crimping portion 11. Thereby, also in the storage part K2, like the storage part K1 in the first embodiment, the storage part K2 is efficiently sealed with a small amount of resin 40r, and moisture enters from the outside. Can be prevented.

  Further, as shown in the AA ′ cross section of FIG. 3B and the BB ′ cross section of FIG. 3C, the vertically lower portion in the circumferential direction on the arrow X2 side (tip side) of the covering portion 2b is a conductor. 3 and the bottom surface inside the rear transition portion 15 are crushed and closely adhered. Thereby, even if the resin 40r is dripped at the storage part K2, the covering part 2b can prevent the resin 40r from flowing into the arrow X1 side (rear end side) of the rear transition part 15. Thus, the application amount of the resin 40r can be reduced, the risk of pinholes and the like occurring on the surface of the coating portion with the resin 40r can be reduced, and the conductor 3 can be efficiently sealed with much less resin 40r.

  Furthermore, since the vertically lower portion in the circumferential direction of the covering portion 2 is crushed and closely adhered between the conductor 3 and the bottom surface inside the transition portion 15, from the arrow X1 side (rear end side) of the rear transition portion 15. It is possible to prevent moisture from entering from the outside toward the arrow X2 side (tip side) by the covering portion 2b.

<Third Embodiment>
As shown to FIG. 4 (A) and (B), since the electric wire 80 with a terminal which concerns on 3rd Embodiment has the terminal 5 and the covered electric wire 2 in common with 1st and 2nd Embodiment, The common configuration and operational effects will be omitted, and only the reservoir K3 different from the first and second embodiments will be described.

  In this case, the rear wire opening 15s of the rear transition portion 15 includes a dam portion 81 provided in a convex shape above the edges 15a and 15b of the rear transition portion 15. The dam portion 81 is made of a high viscosity resin. The high viscosity resin is a resin having a higher viscosity than the resin 40r used as the anticorrosive material, that is, a second resin having a larger number of molecules than the resin 40r.

  The high viscosity resin as the second resin used for the weir portion 81 is, for example, silicon-based, acrylic-based, urethane-based, polyamide-based, epoxy-based, fluorine-based, polyvinyl butyral-based, phenol-based, polyimide-based, or acrylic rubber-based. Any one of these resin materials may be used as a main component, or an olefin-based thermoplastic resin may be used.

  The dam part 81 has side walls 81a and 81b provided at the edges 15a and 15b of the rear transition part 15, respectively. The side walls 81a and 81b are formed so as to be opposed to each other about the axis CL.

  The side walls 81a and 81b are coated with a high-viscosity resin and do not have the same shape as each other. However, since the basic functions are the same, only the side wall 81a will be described below. The side wall 81a is applied above the end edge 15a of the rear transition portion 15 by a predetermined amount, but maintains the same shape because it is a high-viscosity resin having lower fluidity than the resin 40r as the anticorrosive material.

  This side wall 81a is not only the edge 15a of the rear transition portion 15, but also the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 4a of the covering material 4, and the conductor 3 exposed from the covering portion 2b in the rear transition portion 15. Each surface is formed so as to be in contact with each other.

  Accordingly, the rear wire opening 15s of the rear transition portion 15 is provided on the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 4a of the covering material 4, and the edges 15a and 15b of the rear transition portion 15. The side wall 81a, 81b of the weir part 81 forms a storage part K3 for resin storage.

  That is, the storage portion K3 includes the rear end surface 11r of the conductor crimping portion 11, the peeling end surface 4a of the covering material 4, the side walls 81a and 81b of the dam portion 81, and the surface of the conductor 3 exposed from the covering portion 2b in the rear transition portion 15. It is formed as a concave space surrounded by. However, the present invention is not limited to this, and the covering material 4 is arranged so that the peeling end surface 4a of the covering material 4 is brought into contact with the rear end surface 11r of the conductor pressing portion 11, and the rear end surface 11r of the conductor pressing portion 11 and the covering material 4 are arranged. The side walls 81a and 81b may be formed so as to be opposed to each other with the axis CL as a center.

  The storage part K3 having such a configuration has a function of preventing the resin 40r from overflowing from the storage part K3 by the side walls 81a and 81b even when the resin 40r is applied to the storage part K3.

  Thereafter, when the resin 40r and the weir part 81 are cured by UV irradiation in a state where the resin 40r stored in the concave space of the storage part K3 is not leaked by the weir part 81, the rear wire opening of the rear transition part 15 is cured. The portion of the conductor 3 exposed from the covering portion 2b in 15s is completely sealed with the resin 40r.

  The terminal-attached electric wire 80 having such a configuration has a capacity of the storage portion K3 as compared with a conventional electric wire with a terminal in which the peeling end surface 4a of the covering material 4 is arranged at a position far from the rear end surface 11r of the conductor crimping portion 11. Since the application amount of the resin 40r can be reduced, the storage portion K3 can be efficiently sealed with a small amount of the resin 40r. Thus, it is possible to prevent moisture from entering from the outside by the resin 40r of the reservoir K3.

  4A, side walls 81a and 81b of the weir portion 81 are provided between the rear end surface 11r of the conductor crimping portion 11 and the peeling end surface 4a of the covering material 4. As shown in FIG. Thus, when the resin 40r used as the anticorrosive material is applied to the storage portion K3, the side walls 81a and 81b in contact with the surface of the conductor 3 can be prevented from flowing down vertically. Thus, the application amount of the resin 40r can be significantly reduced compared to the conventional case, the risk of pinholes and the like being generated on the surface of the coating portion by the resin 40r can be reduced, and the conductor 3 can be efficiently sealed with much less resin 40r. .

  Furthermore, since the vertically lower portion of the covering portion 2 is crushed and closely adhered between the conductor 3 and the bottom surface inside the rear transition portion 15, the arrow X2 from the arrow X1 side (rear end side) of the rear transition portion 15 It is possible to prevent moisture from entering from the outside toward the side (tip side) by the covering portion 2b.

  Furthermore, since the vertically lower portion of the covering portion 2 is crushed between the conductor 3 and the bottom surface inside the transition portion 15, the arrow X1 side (rear end side) of the rear transition portion 15 is changed to the arrow X2 side (front end side). ) Can also be prevented by the covering portion 2b.

  In the third embodiment, the case where the weir portion 81 made of the second resin having a high viscosity and lower fluidity than the resin 40r is described, but the present invention is not limited to this. As the second resin having low fluidity used for the dam portion 81, a resin having various other structural characteristics that can be maintained while having the same shape, such as a resin having a high surface tension, is used. Also good.

1, 50, 80 Electric wire with terminal 2 Coated electric wire 3 Wire material (conductor)
3a Wire 5 Terminal 4 Coating material 4a, 52a Stripping end surface 5 Terminal 10 Crimping portion 11 Conductor crimping portion 11r Rear end surface 12 Covering crimping portion 12f Front end surface 13 Connection portion 14 Front transition portion 15 Rear transition portion 40f, 40r Resin 52 Covered wire 81 Weir part 81a, 81b Side wall K1-K3 storage part

Claims (6)

A covered electric wire having an insulating covering material and a conductive wire exposed from the peeled end surface of the covering material when the covering material is peeled from the tip side;
A part of the covering material and a part of the wire are exposed between the conductor crimping part for crimping the wire, the coating crimping part for crimping the covering material, and the conductor crimping part and the coating crimping part. A terminal having a transition portion formed as follows:
A storage part composed of a space formed by an end face of the conductor crimping part on the side of the coated crimping part, the peeling end face of the coating material, and the surface of the wire exposed at the transition part,
An anticorrosive material formed in the reservoir;
Equipped with a,
Wherein the peeling edge of the dressing, pressing force of the conductor crimping portion is arranged so as to be interposed between the wire and the inside of the bottom surface of the terminal at any position in the range extending to the peeling edge Rukoto An electric wire with a terminal. The electric wire with a terminal according to claim 1 , wherein the peeling end surface of the covering material is disposed at the position in contact with an end surface of the conductor crimping portion on the side of the coating crimping portion. The peeling end surface of the covering material is an inclined surface inclined by a predetermined angle with respect to the axis of the covering material, and a part of the inclined surface is a terminal of the terminal crimping the wire material at the conductor crimping portion. an electric wire with terminal according to claim 1 that is characterized in being arranged so as to be interposed between the inner bottom surface and the wire. Convex upward from the edge of the transition portion so as to contact the end surface of the conductor crimping portion, the peeling end surface of the covering material disposed in the vicinity of the end surface, and the surface of the wire. The electric wire with a terminal as described in any one of Claim 1 thru | or 3 provided with the dam part formed in the shape. The anticorrosive material is made of resin,
The electric wire with a terminal according to claim 4 , wherein the dam portion is made of a second resin having a lower fluidity than a resin used for the anticorrosive material. The electric wire with a terminal according to claim 5 , wherein the second resin of the dam portion has a molecular weight larger than that of the resin.

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