JP2017050151A - Terminal, electric wire with terminal, wiring harness, connection method for coated conductive wire and terminal and crimping management method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal, etc. that can surely perform a water-proofing treatment and enables determination as to whether proper crimping is performed.SOLUTION: Resin 13c is disposed in at least a part of the vicinity of a rear end portion 15a of a coating crimping portion 9. The resins 13a, 13b, 13c are arranged so as not to protrude from an edge portion 15 of a crimping portion 5 and the rear end portion 15a. The tip of a coated conductive wire 17 is disposed in the crimping portion 5. Next, with respect to the crimping portion 5, a plate-like material is rolled so as to be a cylindrical body having a circular cross-section so that the tips of opposing barrels are overlapped with each other, and compressed in a lump with a metal mold, whereby a coating portion 21 of the coated conductive wire 17 is crimped by the coating crimping portion 9 and also a conductive wire 19 exposed from the coating portion 21 is crimped by a conductive wire crimping portion 7. When the crimping portion 5 is compressed to crimp a terminal 1 and the coated conductive wire 17 together, whereby the resin 13c can be protruded from the rear end portion 15a of the coating crimping portion 9 to the outer periphery of the coating portion 21 of the coated conductive wire 17.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electric wire with a terminal used for an automobile or the like.

  Conventionally, in fields such as automobiles, OA equipment, and home appliances, electric wires made of copper-based materials having excellent electrical conductivity have been used as power lines and signal lines. In particular, in the automobile field, the performance and functionality of vehicles are rapidly increasing, and various electric devices and control devices mounted on the vehicle are increasing. Therefore, the electric wire with a terminal used in this tends to increase.

  On the other hand, while environmental problems are attracting attention, the weight reduction of automobiles is required. Therefore, an increase in weight accompanying an increase in the amount of wire harness used becomes a problem. For this reason, it replaces with the copper wire currently used conventionally and the lightweight aluminum electric wire attracts attention.

  Here, a connection terminal is used when connecting such electric wires or in a connection portion such as a device. However, even if it is an electric wire with a terminal using an aluminum electric wire, copper which is excellent in an electrical property may be used for a terminal part for reliability of a connection part. In such a case, an aluminum electric wire and a copper terminal are joined and used.

  However, when different metals are brought into contact, so-called electrolytic corrosion may occur due to the difference in standard electrode potential. In particular, since the standard electrode potential difference between aluminum and copper is large, corrosion on the aluminum side, which is electrically base, progresses due to the influence of water scattering and condensation on the contact portion. For this reason, the connection state between the electric wire and the terminal at the connection portion becomes unstable, and there is a risk that the electrical resistance increases due to an increase in contact resistance or a decrease in wire diameter, and further, the disconnection may occur, resulting in malfunction of the electrical component or stop of the function. is there.

  As a connection structure for such a crimp terminal to an electric wire, for example, a waterproof sheet is provided before and after the conductor crimp part, and the front and rear of the connection part between the conductor crimp part and the conductor exposed part are closed with the waterproof sheet. There is a connection structure (Patent Document 1).

Japanese Patent Laying-Open No. 2015-65148

  Like patent document 1, the junction part of an electric wire conductor and a terminal is sealed by arrange | positioning a water stop sheet | seat before and after the crimping part of an electric wire conductor crimping part and an exposed conductor part, and water etc. to a connection part Intrusion can be prevented.

  On the other hand, in order to confirm that the waterproofing by the waterproof sheet is performed reliably, in Patent Document 1, when the waterproof sheet is disposed, the waterproof sheet protrudes from the front and rear of the crimping portion of the terminal. Be placed. Thus, it can confirm from the exterior that the water stop sheet | seat was reliably arrange | positioned because the water stop sheet | seat protrudes.

  However, if the waterproof sheet is disposed so as to protrude from the crimping portion, the protruding waterproof sheet may be torn or damaged during subsequent handling or when the electric wire is crimped. Moreover, even if the water-stop sheet protrudes from the pressure-bonding portion, it is difficult to determine whether or not appropriate pressure-bonding has been performed. In particular, it is difficult to confirm whether or not water tightness between the outer peripheral surface of the covered portion of the coated conductor and the inner surface of the terminal is obtained at the time of crimping as well as the overlapping portion of the metal portions of the terminal. .

  The present invention has been made in view of such a problem, and provides a terminal or the like that can reliably perform waterproofing and can determine that appropriate crimping has been performed. With the goal.

  In order to achieve the above-described object, a first invention is a terminal connected to a coated conductor, and includes a crimping portion to which the coated conductor is crimped, and a terminal main body, and the crimping portion includes the coated conductor. And a lead wire crimping part for crimping a conductor exposed from the cover part, and at least a resin is provided in the vicinity of the rear end of the coat crimping part. The resin is disposed on the terminal surface, and the distance from the rear end portion of the coated crimping portion to the position where the resin is formed is more than 0 mm and not more than 5 times the thickness of the resin. It is a terminal characterized by.

  According to the first invention, the resin is disposed in the vicinity of the rear end portion of the coated crimping portion, but since the resin does not protrude from the crimping portion, it is possible to prevent the resin from peeling off or being damaged during work. it can. In addition, the distance from the rear end portion of the coated crimping portion to the position where the resin is formed is more than 0 mm and not more than 5 times the thickness of the resin, and when crimping, from between the terminal and the coated portion, The arrangement of the resin is designed so that the resin protrudes. Accordingly, it is possible to grasp that the space between the covering portion and the terminal is sealed with resin by crimping, and since a predetermined amount of resin protrudes at the time of appropriate crimping, the crimping is performed depending on the amount of the resin protruding. Know what was done properly.

  A second invention is a terminal-attached electric wire to which the terminal according to the first invention and a coated conductor are connected, wherein the coated conductor is crimped by the crimp portion, and from the rear end of the coated crimp portion, The electric wire with a terminal is characterized in that the resin protrudes from an outer periphery of the covering portion of the coated conductor.

  The terminal may be made of copper or a copper alloy, and the conductor of the coated conductor may be made of aluminum or an aluminum alloy.

  According to the second invention, when crimping, the resin protrudes from the rear end of the coated crimping portion, so that the connection portion is sealed by the resin, and the resin It is possible to grasp that the crimping has been appropriately performed by the amount of protrusion.

  Moreover, since the connection part of an electric wire conductor and a crimping | compression-bonding part can be reliably sealed with resin, generation | occurrence | production of electrolytic corrosion can be suppressed also at the time of the connection of a dissimilar metal.

  A third invention is a wire harness in which a plurality of electric wires with terminals according to the second invention are bundled.

  In the present invention, a plurality of electric wires with terminals can be bundled and used.

  A fourth invention is a method for connecting a coated conductor and a terminal, wherein the terminal has a crimping portion to which the coated conductor is crimped, and a terminal body, and the crimping portion is coated with the coated conductor. A cover crimping part for crimping the part and a conductor crimping part for crimping the conductor exposed from the coating part are integrally formed, and the coated crimping part is disposed in a state where the tip of the coated conductor is disposed in the crimping part. In the vicinity of the rear end portion of the part, a resin is disposed between the coated crimping part and the coated part of the coated conducting wire, the resin is disposed on the terminal surface, and the coating of the coated conducting wire by the coated crimping part Crimping a portion, crimping the conductor exposed from the covering portion at the conductor crimping portion, and protruding the resin from the rear end of the covering crimp portion to the outer periphery of the covering portion of the coated conductor With the connection method of coated conductor and terminal That.

  The resin may be provided on an outer periphery of the coated conducting wire, and the coated conducting wire provided with the resin may be disposed and crimped on the crimping portion.

  The resin may be provided on an inner surface of the coated crimping portion, and the coated conducting wire may be disposed and crimped on the crimped portion provided with the resin.

  According to the fourth invention, since the resin does not protrude before the crimping, the resin can be prevented from being damaged during the crimping operation and the like, and the handling is easy. By making it protrude, it can be grasped | ascertained that the connection part was sealed with resin reliably.

  At this time, by providing the resin in advance on the outer periphery of the coated conductor, it is possible to prevent the resin from being damaged when the coated conductor is disposed on the terminal.

  Moreover, by providing the resin on the inner surface of the coated crimping portion in advance, the distance from the rear end portion of the coated crimped portion can be made constant regardless of the insertion allowance of the coated conductor.

  5th invention is a crimping | crimping management method of a covered conducting wire and a terminal, Comprising: The said terminal has a crimping | compression-bonding part to which the said covered conducting wire is crimped | bonded, and a terminal main body, The said crimping | compression-bonding part is the said covered conducting wire. A covering crimping part for crimping the covering part and a conductor crimping part for crimping the conductor exposed from the covering part are integrally formed, and the covering is performed in a state where the tip of the covering conducting wire is arranged in the crimping part. In the vicinity of the rear end portion of the crimping portion, a resin is disposed between the coated crimping portion and the coated portion of the coated conducting wire, the resin is disposed on a terminal surface, and the coated crimping portion includes the resin of the coated conducting wire. Crimping the coating portion, crimping the conductor exposed from the coating portion at the lead wire crimping portion, protruding the resin from the rear end of the coating crimping portion to the outer periphery of the coating portion, Judge the quality of crimping by the amount of protrusion A compression method for managing the coated conductive wire and the terminal, characterized.

  According to the fifth aspect of the present invention, since the resin does not protrude before crimping, the resin can be prevented from being damaged when the coated conductor is crimped, and the handling is easy. By protruding, it can be ascertained that the resin is reliably sealed with resin. At this time, it is possible to reliably grasp that the pressure bonding has been properly performed by determining whether the pressure bonding is good or not based on the amount of protrusion of the resin.

  ADVANTAGE OF THE INVENTION According to this invention, the terminal etc. which can perform waterproofing reliably and can judge that appropriate crimping | compression-bonding are performed can be provided.

The perspective view of the terminal 1. FIG. The expansion | deployment top view of the terminal 1. FIG. The perspective view of the state which has arrange | positioned the covering conducting wire 17 to the terminal 1. FIG. The perspective view of the state which rounded the crimping | compression-bonding part 5. FIG. The perspective view of the state which compressed the crimping | compression-bonding part 5. FIG. Sectional drawing of the longitudinal direction of the state which compressed the crimping | compression-bonding part 5. FIG. The top view of the state which compressed the crimping | compression-bonding part 5. FIG. The perspective view of the terminal 1a. The perspective view of the terminal 1b. (A)-(c) is a figure which shows the process of crimping | bonding the terminal 1c and the covering conducting wire 17. FIG. The expansion | deployment top view of the terminal 1d.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a terminal 1 connected to a coated conductor, and FIG. 2 is a developed plan view of the terminal 1. The terminal 1 is made of, for example, copper or a copper alloy, and includes a terminal body 3 and a crimping portion 5. The terminal body 3 is formed by forming a plate-shaped material having a predetermined shape into a cylindrical body having a rectangular cross section. The terminal body 3 has an elastic contact piece formed by folding a plate-shaped material into a rectangular cylinder. The terminal body 3 is connected by inserting a male terminal or the like from the front end.

  The crimping part 5 is a part to be crimped to the coated conductor, and has a barrel shape in which a cross-sectional shape perpendicular to the longitudinal direction of the terminal 1 is substantially U-shaped. The crimping part 5 includes a lead crimping part 7 for crimping the lead part on the tip side of the coated conductor and a covering crimping part 9 for crimping a part of the covering part of the coated conductor. The lead wire crimping part 7 and the covering crimping part 9 are integrally formed.

  A serration 11 is provided in a part of the inner surface of the conductor crimping portion 7 in the width direction (circumferential direction when the crimping portion 5 described later is rounded). By forming the serrations 11 in this manner, when the conducting wire is crimped, the oxide film on the surface of the conducting wire can be easily broken, and the contact area with the conducting wire can be increased.

  Resin 13a is disposed on at least a part of the front end portion of the lead wire crimping portion 7 on the terminal main body 3 side (in the drawing, substantially the full width of the crimping portion 5 near the front end portion). In addition, the resin 13b is disposed at least in the vicinity of the end portion in the width direction of the covering crimp portion 9 (in the drawing, the substantially entire length near the end portion on one side in the width direction of the crimp portion 5). In the present invention, the front end portion on the terminal body 3 side and the end portion in the width direction of the crimping portion 5 are combined to form the edge portion 15.

  In addition, the resin 13c is disposed in at least part of the vicinity of the rear end portion 15a of the cover crimping portion 9 (in the drawing, substantially the entire width of the crimp portion 5 near the rear end portion 15a). The resin 13c is desirably a resin that is the same as or softer than the hardness of the resin of the coating portion of the coated conductor, and is, for example, polyamideimide. The resins 13a, 13b, and 13c are preferably made of the same material. The resins 13a, 13b, and 13c may be provided on predetermined portions of the terminal 1 by application, and a resin sheet such as butyl rubber, silicone rubber, epoxy resin, or urethane rubber formed in a predetermined shape is pasted in a predetermined position. May be attached. Moreover, resin 13a, 13b, 13c may be arrange | positioned in the expansion | deployment state before shape | molding in a terminal shape, or may be arrange | positioned after shape | molding in a terminal shape.

  The resins 13a, 13b, and 13c are arranged so as not to protrude from the edge 15 and the rear end 15a of the crimping part 5 (that is, arranged only on the terminal surface). That is, the distance X from the edge 15 of the crimping part 5 to the position where the resins 13a and 13b are formed is preferably 0 mm <X ≦ 5t (where t is the thickness of the resin). The distance A from the end 15a to the position where the resin 13c is formed is preferably 0 mm <A ≦ 5t (where t is the thickness of the resin). More desirably, 0 mm <X ≦ t and 0 mm <A ≦ t. The resin thickness t is preferably 0.01 mm to 0.2 mm. If the resin thickness t is too thin, the resin may be broken or cut at the time of pressure bonding. If the resin thickness t is too thick, the resin housing t may not fit in the connector housing cavity.

  When the position of the resin 13a, 13b, 13c coincides with the edge 15 or the rear end 15a of the crimping part 5 or protrudes from the edge 15 or the rear end 15a, the crimping operation between the terminal 1 and the coated conductor In some cases, the resins 13a, 13b, and 13c may interfere with other members, coated conductors, and the like, and may be peeled off or damaged.

  On the other hand, the resin 13a, 13b, 13c can be prevented from being damaged by preventing the resins 13a, 13b, 13c from protruding from the edge 15 or the rear end 15a of the crimping part 5. Further, when the distances X and A from the edge 15 or the rear end 15a of the crimping part 5 to the positions where the resins 13a, 13b, and 13c are formed exceed 5 times the resin thickness t, the terminal is crimped as described later. It becomes difficult to protrude the resin 13a, 13b, 13c by a predetermined amount.

  Next, a method for connecting the coated conductor and the terminal 1 will be described. First, as shown in FIG. 3, the covering portion 21 having a predetermined length at the tip of the covered conducting wire 17 is removed to expose the conducting wire 19. Note that the conductive wire 19 of the covered conductive wire 17 is preferably made of aluminum or an aluminum alloy.

  Next, the tip of the coated conducting wire 17 is disposed on the crimping part 5. Under the present circumstances, the conducting wire 19 exposed from the coating | coated part 21 is arrange | positioned at the conducting wire crimping | compression-bonding part 7 (formation part of the serration 11), and the coating | coated part 21 is arrange | positioned at the covering crimping | compression-bonding part 9. FIG.

  Next, as shown in FIG. 4, in the crimping portion 5, the plate-like material is rounded so as to form a cylindrical body having a circular cross section so that the tips of the opposing barrels overlap each other. That is, the terminal 1 is an overlap type in which the tips of the opposing barrels overlap each other during crimping. In addition, when the crimping | compression-bonding part 5 is rounded, the diameter of the covering crimping part 9 is larger than that of the conductor crimping part 7.

  At this time, the crimping portion 5 is rounded so that the edge portion 15 on the side where the resin 13b of the crimping portion 5 is disposed is located outside. That is, when the crimping part 5 is rounded, the resin 13b is arranged between the metal part on the inner peripheral side and the metal part on the outer peripheral side in the overlapping part of the metals constituting the crimping part 5. Further, the resin 13 c is disposed between the coated crimping portion 9 and the coated portion 21 of the coated conducting wire 17 in the vicinity of the rear end portion 15 a of the coated crimped portion 9 with the tip of the coated conducting wire 17 disposed in the crimped portion 5. .

  Next, as shown in FIG. 5, the crimping portion 5 is collectively compressed with a mold (not shown) to crimp the covering portion 21 of the coated conductor 17 with the covering crimping portion 9, and the lead crimping portion 7. Then, the conductive wire 19 exposed from the covering portion 21 is crimped.

  As shown in FIG. 6, when the crimping portion 5 is compressed (arrow C in the figure) and the terminal 1 and the coated conductor 17 are crimped, the covering portion 21 of the coated conductor 17 is formed from the rear end portion 15 a of the coated crimping portion 9. The resin 13c can be protruded from the outer periphery (arrow B in the figure).

  Similarly, when the crimping portion 5 is compressed and the terminal 1 and the coated conductor 17 are crimped, the overlapping portion of the metals constituting the crimping portion 5 (the end portion of the crimping portion 5 on the terminal body 3 side) In the portion where the rounded crimped portion is crushed and sealed), the resin 13a can protrude outside (arrow E in the figure). Furthermore, the resin 13b can be protruded to the outside in the overlapping part of the metals composing the crimping part 5 (the overlapping part of the opposite ends of the barrel part).

  That is, when appropriate crimping is performed, the resin 13a is protruded to the outside at the end portion of the crimping portion 5 on the terminal body 3 side, and is formed along the longitudinal direction of the crimping portion 5. The resin 13b can be protruded to the outside along the overlapping portion of the metal to be formed, and further, the resin 13c can be protruded from the rear end portion 15a of the covering crimping portion 9 to the outer periphery of the covering portion 21.

  Here, as suitable crimping | compression-bonding conditions, the compression rate of a conducting-wire crimping | compression-bonding part is 40 to 70%, and the compression rate of a covering crimping part is 60 to 90%. Here, the compression ratio of the crimping part is calculated by (cross-sectional area after compression) / (cross-sectional area before compression). That is, the compression rate of the lead wire crimping portion is (cross-sectional area of the lead wire 19 after compression) / (cross-sectional area of the lead wire 19 before compression), and the compression rate of the covering crimping portion is (the coating portion 21 after compression). Is the cross-sectional area of the coated conducting wire 17) / (the cross-sectional area of the coated conducting wire 17 in the coated portion 21 before compression). If the compression rate is not appropriate, sufficient water stoppage and pull-out strength cannot be obtained.

  Thus, the coated conductor 17 is crimped by the crimping portion 5 of the terminal 1, and the resins 13 a and 13 b protrude to the outside at the overlapping portion of the metals constituting the crimping portion 5, and the rear end of the coated crimping portion 9. From the part 15a, the terminal-attached electric wire 20 in which the resin 13c protrudes from the outer periphery of the covering part 21 can be obtained.

  FIG. 7 is a plan view of the terminal-attached electric wire 20 to which the coated conducting wire 17 and the terminal 1 are connected. The amount of compression of the crimping portion 5 varies depending on the position of the terminal 1 in the longitudinal direction. For example, the end (sealing part) on the terminal body 3 side of the crimping part 5 and the conductor crimping part 7 are strong crimping parts (F in the figure), and between the strong crimping parts and the covering crimping part 9 are A taper portion in the vicinity of the boundary between the conductor crimp portion 7 and the cover crimp portion 9 becomes a weak crimp portion (H in the drawing).

  In this case, the amount of protrusion (K in the figure) from the edge 15 or the rear end 15a of the resin 13a, 13b, 13c of each part varies depending on the compression amount. For example, the amount of protrusion of the resin 13a, 13b, 13c from the edge 15 or the rear end portion 15a is large in the strong pressure-bonding portion having a large compression amount, and the edge 15 of the resin 13a, 13b, 13c is selected in the weak pressure-bonding portion. The amount of protrusion from the rear end portion 15a is reduced. Thus, the quality of crimping | compression-bonding can be determined by measuring the protrusion amount of resin 13a, 13b, 13c in each part, respectively, and comparing with a reference | standard.

  In addition, in order to determine the quality of the crimping, it is necessary that there is a protruding amount of the resins 13a, 13b, 13c exceeding 0 mm from any part of the edge 15 or the rear end 15a. Further, if the amount of protrusion of the resins 13a, 13b, and 13c is too large, the pressure bonding is too strong, and there is a risk that the lead wire or the covering portion will be broken, and the resin may be broken or peeled off. For this reason, the protruding amounts of the resins 13a, 13b, and 13c are equal to or less than the thickness t of the resins 13a, 13b, and 13c, and are determined to be acceptable when the amount is not more than a predetermined amount set for each part. In addition, the amount of protrusion of the resins 13a, 13b, and 13c may be determined visually or automatically from a camera image.

  As described above, according to the present embodiment, it is possible to determine whether the pressure is good or not based on the amount of protrusion of the resin 13a, 13b, 13c after pressure bonding. For this reason, while the overlapping part of a metal is sealed reliably, between the coating | coated part 21 and the coating | coated crimping | compression-bonding part 9 is sealed reliably, it can prevent that a water | moisture content permeates into the inside. That is, it is possible to provide a method for managing crimping between the coated conductor 17 and the terminal 1.

  In addition, since the resins 13a, 13b, and 13c do not protrude from the edge 15 or the rear end 15a of the terminal 1 before crimping, the resins 13a, 13b, and 13c are prevented from being damaged during handling or crimping. can do.

  Next, a second embodiment will be described. FIG. 8 is a perspective view showing an example using the terminal 1a according to the second embodiment. In the following description, components having the same functions as those of the terminal 1 and the like are denoted by the same reference numerals as those in FIGS. 1 to 7 and redundant description is omitted.

  The terminal 1a has substantially the same configuration as the terminal 1, but the form of the crimping part 5 is different. The crimping portion 5 of the terminal 1a is formed by rounding a plate-like material so as to form a cylindrical body having a circular section, butting the edges 15 of the plate-like material together and joining them together by a welded portion 23. The In addition, the welding part 23 is welded by laser welding etc., for example. The covered conducting wire 17 is inserted from the rear end portion of the crimp portion 5 formed in a cylindrical shape.

  In this case, the overlapping part of the metal part which comprises a crimping | compression-bonding part with respect to the longitudinal direction of the crimping | compression-bonding part 5 is not formed. For this reason, the resin 13b in FIG. 2 is unnecessary. Therefore, in the terminal 1a, only the resin 13a disposed around the inner surface near the end of the crimping portion 5 on the terminal body 3 side, and the resin 13c disposed around the entire inner surface near the rear end portion 15a of the crimping portion 5. It's okay.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. Even in this case, it is possible to determine whether or not the pressure bonding is good from the amount of protrusion of the resins 13a and 13c after the pressure bonding.

  Next, a third embodiment will be described. FIG. 9 is a perspective view showing an example using the terminal 1b according to the third embodiment. The terminal 1b has substantially the same configuration as the terminal 1a, but differs in that a sealing portion 25 is provided in which the end of the crimping portion 5 on the terminal body 3 side is sealed.

  The crimping portion 5 of the terminal 1b is formed by rounding a plate-like material so as to form a cylindrical body having a circular cross section, butting the side edges of the plate-like material together and joining them together by a welded portion 23. The A sealing portion 25 is provided at the front end portion (terminal body 3 side) of the crimping portion 5. That is, the crimping part 5 is substantially cylindrical with one side closed, and is sealed except for the rear end part 15a into which the covered conducting wire is inserted. The covered conducting wire 17 is inserted from the rear end portion of the crimp portion 5 formed in a cylindrical shape. In addition, the welding part 23 and the sealing part 25 are welded by laser welding etc., for example.

  In this case, the overlapping part (the overlapping part which is not welded) of the metal part which comprises a crimping | compression-bonding part is not formed. Therefore, both the resins 13a and 13b in FIG. 2 are unnecessary. Therefore, in the terminal 1b, only the resin 13c disposed in the vicinity of the rear end portion 15a of the crimping portion 5 is required.

  According to the third embodiment, an effect similar to that of the first embodiment can be obtained. Thus, in the present invention, the resin 13a and the resin 13b are not necessarily required. When an overlapping portion of unwelded metal occurs in the terminal, if necessary, at least a part in the vicinity of the edge in the width direction of the crimping portion 5 or at least an end portion of the conductor crimping portion 7 on the terminal main body 3 side. The resin 13a and 13b may be disposed in part.

  Next, a fourth embodiment will be described. FIG. 10A is a plan view showing an example using the terminal 1c according to the fourth embodiment. The terminal 1c has substantially the same configuration as the terminal 1b, but differs in that the resin 13c is not disposed in the vicinity of the rear end portion 15a of the inner surface of the crimping portion 5.

  The crimp part 5 of the terminal 1c is substantially cylindrical with one side closed like the terminal 1b, and is sealed except for the rear end part 15a into which the covered conductor is inserted. The covered conducting wire 17 is inserted from the rear end portion of the crimp portion 5 formed in a cylindrical shape.

  Resin 13d is provided on the outer periphery of the covering portion 21 of the covered conducting wire 17 to be inserted into the terminal 1c. The resin 13d is provided on the entire outer surface of the covering portion 21 with a predetermined width and a predetermined thickness in the vicinity of the end portion of the covering portion 21 (near the boundary portion with the exposed conductor 19).

  As shown in FIG. 10 (b), the resin 13d is placed between the coated crimping portion 9 and the coated portion 21 in the vicinity of the rear end portion 15a of the coated crimped portion 9 in a state where the tip of the coated conducting wire 17 is arranged in the crimped portion 5. It is arranged between them and completely hidden inside the crimping part 5. That is, the resin 13d does not protrude from the crimping part 5 before the crimping.

  From this state, as shown in FIG. 10 (c), the crimping portion 5 is compressed together with a mold (not shown) and the covering portion 21 is crimped by the covering crimping portion 9, and the lead wire crimping portion 7. Then, the conductive wire 19 exposed from the covering portion 21 is crimped. By compressing the crimping part 5 and crimping the terminal 1 and the coated conductor 17, the resin 13 d can be protruded from the rear end part 15 a of the coated crimping part 9 to the outer periphery of the coated part 21 of the coated conductor 17. .

  According to the fourth embodiment, an effect similar to that of the first embodiment can be obtained. Even in this case, it is possible to determine whether or not the pressure bonding is good from the amount of protrusion of the resin 13d after the pressure bonding.

  In addition, it is not necessary to arrange | position resin inside the terminal 1c by arrange | positioning resin 13d in the outer periphery of the coating | coated part 21 of the covering conducting wire 17. FIG. For this reason, it is possible to prevent the resin on the inner surface of the crimping part from being damaged when the coated conductor 17 is inserted into the crimping part 5. On the other hand, if the resin 13c is previously arranged on the inner surface of the crimping part 5 as in the above-described embodiment, the distance between the resin 13c and the rear end part 15a can be easily controlled. For this reason, when performing crimping management, it is desirable to arrange the resin 13c on the inner surface of the crimping portion 5 in advance.

  Next, a fifth embodiment will be described. FIG. 11 is a developed plan view of a terminal 1d according to the fifth embodiment. The terminal 1d has substantially the same configuration as the terminal 1, but the resin arrangement is different.

  In the terminal 1d, the resin 13e is not only in the vicinity of the edge 15 in the width direction of the crimping part 5, in the vicinity of the end of the conductor crimping part 7 on the terminal body 3 side, and in the vicinity of the rear end 15a. It is arranged on substantially the entire surface other than the portion that conducts with the terminal 1b. The resin 13e is also arranged at a predetermined distance from the edge 15 and the rear end 15a of the crimping part 5. For this reason, the resin 13e does not protrude from the edge of the crimping part 5 before the crimping.

  According to the fifth embodiment, an effect similar to that of the first embodiment can be obtained. Thus, in this invention, if resin is arrange | positioned to at least one part of the rear-end part 15a vicinity of the covering crimping | compression-bonding part 9, resin may be arrange | positioned also at another site | part.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  In the above-described embodiment, the female terminal has been described. However, the male terminal can be used similarly. Moreover, the shape of each terminal and the arrangement of the resin can be combined. Moreover, a plurality of electric wires with terminals according to the present invention can be bundled and used as a wire harness.

1, 1 a, 1 b, 1 c, 1 d ...... Terminal 3 ...... Terminal body 5 ...... Crimp section 7 ...... Conductor crimp section 9 ...... Cover crimp section 11 ... Serrations 13 a, 13 b, 13 c, 13d, 13e ......... Resin 15 ......... Edge 15a ......... Rear end 17 ......... Coated conductor 19 ......... Conductor 20 ......... Electric wire with terminal 21 ......... Coated part 23 ......... Welded part 25 ……… Sealing part

Claims (8)

A terminal connected to the coated conductor,
A crimping portion to which the coated conductor is crimped, and a terminal body;
The crimping part is integrally formed with a coating crimping part that crimps the coating part of the coated conductor and a conductor crimping part that crimps the conductor exposed from the coating part,
At least the resin is disposed in the vicinity of the rear end portion of the covering crimping portion,
The resin is disposed on the terminal surface,
A terminal, wherein a distance from a rear end portion of the coated crimping portion to a position where the resin is formed is more than 0 mm and not more than 5 times the thickness of the resin. A terminal-attached electric wire to which the terminal according to claim 1 and a coated conductor are connected,
The coated conductor is crimped by the crimping section, and the resin protrudes from the rear end of the coated crimping section to the outer periphery of the coated section of the coated conductor.   The said terminal is a product made from copper or a copper alloy, and the conducting wire of the said covered conducting wire is a product made from aluminum or aluminum alloy, The electric wire with a terminal of Claim 2 characterized by the above-mentioned.   A wire harness in which a plurality of electric wires with terminals according to claim 2 or 3 are bundled. A method of connecting a coated conductor and a terminal,
The terminal has a crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping part is integrally formed with a coating crimping part that crimps the coating part of the coated conductor and a conductor crimping part that crimps the conductor exposed from the coating part,
In the state where the tip of the coated conductor is disposed in the crimp portion, in the vicinity of the rear end portion of the coated crimp portion, a resin is disposed between the coated crimp portion and the coated portion of the coated conductor, Placed on the terminal surface,
The coated crimping portion crimps the coated portion of the coated conducting wire, the conductive wire crimping portion crimps the conductive wire exposed from the coating portion, and the coating of the coated conductive wire from the rear end portion of the coated crimped portion. A method of connecting a coated conductive wire and a terminal, wherein the resin protrudes from the outer periphery of the portion.   6. The method of connecting a coated conductor and a terminal according to claim 5, wherein the resin is provided on an outer periphery of the coated conductor, and the coated conductor provided with the resin is disposed and crimped on the crimping portion. .   6. The connection between a coated conductor and a terminal according to claim 5, wherein the resin is provided on an inner surface of the coated crimp portion, and the coated conductor is disposed and crimped to the crimp portion provided with the resin. Method. A method for managing crimping between a coated conductor and a terminal,
The terminal has a crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping part is integrally formed with a coating crimping part that crimps the coating part of the coated conductor and a conductor crimping part that crimps the conductor exposed from the coating part,
In the state where the tip of the coated conductor is disposed in the crimp portion, in the vicinity of the rear end portion of the coated crimp portion, a resin is disposed between the coated crimp portion and the coated portion of the coated conductor, Placed on the terminal surface,
While crimping | bonding the said coating | coated part of the said covered conducting wire with the said crimping | compression-bonding part, the said conducting wire exposed from the said coating | coated part is crimped | bonded with the said conductor crimping | compression-bonding part. Let the resin stick out,
A method for managing crimping of a coated conductor and a terminal, wherein the quality of crimping is determined by the amount of protrusion of the resin.

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