JP2017050155A - Terminal, conductive 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 enable determination as to whether proper crimping is performed.SOLUTION: Resins 13a, 13b are respectively disposed at at least a part of the vicinity of an end portion 15 on a terminal body 3 side of a conductive wire crimping portion 7 and at least a part of the vicinity of an edge portion 15 of a coating crimping portion 9. The resins 13a and 13b are arranged so as not to protrude from the edge portion 15 of a crimping portion 5. 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 the opposing barrels are overlapped with each other. Next, the crimping portion 5 is compressed in a lump with a metal mold, whereby a coating portion 21 of a coated conductive wire 17 is crimped by the coating crimping portion 9, and a conductive wire exposed from the coating portion 21 is crimped by the 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 resins 13a, 13b can be made to protrude outwards at the overlap portion of metal pieces constituting the crimping portion 5.SELECTED DRAWING: Figure 8

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.

  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. A cover crimping part for crimping the covering part and a conductor crimping part for crimping the conductor exposed from the coating part are integrally formed, and at least a part near the edge in the width direction of the crimping part or the A resin is disposed on at least a part of the end of the lead wire crimping portion on the terminal main body side, the resin is disposed on the terminal surface, and a distance from an edge of the crimping portion to a position where the resin is formed. Alternatively, the thickness of the resin varies depending on the position of the terminal in the longitudinal direction.

  The crimping portion has a substantially U-shaped barrel shape, and is an overlap type in which ends of opposing barrels overlap each other at the time of crimping, and a resin is provided at least in the vicinity of the edge of the coated crimping portion. The distance from the edge of the crimping part to the position where the resin is formed may be different depending on the position of the terminal in the longitudinal direction.

  The crimping portion has a substantially U-shaped barrel shape, and is an overlap type in which ends of opposing barrels overlap each other at the time of crimping, and a resin is provided at least in the vicinity of the edge of the coated crimping portion. And the thickness of the resin may be different depending on the position of the terminal in the longitudinal direction.

  According to the first invention, the resin is disposed on at least a part of the edge of the coated crimping part or at least a part of the end of the lead crimping part on the terminal main body side, but the resin protrudes from the crimping part. Therefore, it is possible to prevent the resin from being peeled off or damaged during work. Moreover, when crimping | bonding, arrangement | positioning of resin is designed so that resin may protrude from the overlapping part of the metal in a crimping | compression-bonding part. Therefore, it is possible to grasp that the connecting portion is sealed with the resin by the crimping, and since the predetermined amount of the resin protrudes at the time of the appropriate crimping, the crimping is appropriately performed according to the amount of the resin protruding. I can understand that.

  At this time, since the thickness of the resin and the distance from the edge of the crimping part to the part where the resin is arranged differ depending on the part in the longitudinal direction of the terminal, the resin protrudes excessively at the strong crimping part or is weakly crimped. It is possible to prevent the resin from protruding too little at the part.

  For example, by making the distance from the edge of the crimping part to the position where the resin is formed different depending on the position in the longitudinal direction of the terminal, the strong crimping part increases the distance between the resin and the edge and weakens it. The crimping portion can shorten the distance between the resin and the edge. As a result, the amount of protrusion of the resin can be made substantially constant regardless of the site during crimping.

  Moreover, by making the thickness of the resin different depending on the position in the longitudinal direction of the terminal, the strong pressure bonding portion can reduce the thickness of the resin, and the weak pressure bonding portion can increase the thickness of the resin. As a result, the amount of protrusion of the resin can be made substantially constant regardless of the site during crimping.

  A second invention is a terminal-attached electric wire in which the terminal according to the first invention and a coated conductor are connected, wherein the coated conductor is crimped by the crimping portion, and between the metals constituting the crimping portion. In the overlapping portion, the resin has a terminal and is characterized in that the resin protrudes to the outside.

  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 overlapping portion of the metal in the 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 properly performed by the amount of protrusion. At this time, since the thickness of the resin and the distance from the edge of the crimping part vary depending on the part, the amount of protrusion of the resin can be made substantially constant in both the strong and weakly crimped parts.

  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. The crimping part for crimping the part and the crimping part for crimping the conductor exposed from the covering part are integrally formed, and at least a part near the edge in the width direction of the crimping part or the crimping of the conductor Resin is disposed on at least a part of the end of the terminal on the terminal body side, the resin is disposed on the terminal surface, the tip of the coated conductor is disposed on the crimping portion, and the coating crimping portion While crimping | bonding the said coating | coated part of a covered conducting wire, the said conducting wire exposed from the said coating | coated part is crimped | bonded by the said conducting wire crimping part, and the said resin protrudes outside in the overlapping part of the metal which comprises the said crimping | compression-bonding part. Coated conductors and terminals characterized by It is a connection method.

  According to the fourth invention, since there is no protrusion of the resin before crimping, it is possible to prevent the resin from being damaged when the coated conductor is crimped, and the handling is easy. By allowing the resin to protrude, it can be ascertained that the connecting portion is reliably sealed with the resin.

  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. The cover crimping part for crimping the covering part and the lead wire crimping part for crimping the conductive wire exposed from the covering part are integrally formed, and at least a part near the edge in the width direction of the crimping part or the conductor Resin is disposed on at least a part of the end of the crimping portion on the terminal body side, the resin is disposed on the terminal surface, the tip of the coated conductor is disposed on the crimping portion, and the coated crimping portion While crimping | bonding the said coating | coated part of the said covered conducting wire, the said conducting wire exposed from the said coating | coated part is crimped | bonded by the said conductor crimping | compression-bonding part, and the said resin protrudes outside in the overlapping part of the metal which comprises the said crimping | compression-bonding part. Depending on the amount of protrusion of the resin A compression method for managing the coated conductive wire and the terminal and judging the quality of the crimp.

  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. (A) is an end view in the AA line cross section of FIG. 4, Comprising: The cross-sectional view of the state which rounded the crimping | compression-bonding part 5, (b) is an end view in the BB line cross section of FIG. Sectional drawing of the state which compressed the 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 expansion | deployment top view of the terminal 1b. The expansion | deployment top view of the terminal 1c. The expansion | deployment top view of the terminal 1d. JJ sectional view taken on the line of FIG.

  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.

  At least a part of the front end portion of the lead wire crimping portion 7 on the side of the terminal body 3 (in the drawing, substantially the full width of the crimping portion 5 near the front end portion) and at least a portion of the covering crimping portion 9 near the end portion in the width direction (in the drawing, Resins 13a and 13b are respectively disposed on substantially the entire length in the vicinity of the end on one side in the width direction of the crimping 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. The resins 13a and 13b are, for example, polyamideimide. The resins 13a and 13b may be provided by coating on predetermined portions of the terminal 1, and a resin sheet such as butyl rubber, silicone rubber, epoxy resin, or urethane rubber formed in a predetermined shape is pasted at a predetermined position. May be attached. Moreover, resin 13a, 13b 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 and 13b are arranged so as not to protrude from the edge 15 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), more preferably 0 mm. <X ≦ 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.

  If the position of the resin 13a, 13b coincides with the edge 15 of the crimping part 5 or protrudes from the edge 15, the resin 13a, 13b becomes another member during the crimping operation between the terminal 1 and the coated conductor. There is a risk of peeling or damage due to interference with coated wires. On the other hand, by preventing the resins 13a and 13b from protruding from the edge portion 15 of the crimping portion 5, it is possible to suppress damage to the resins 13a and 13b. Further, when the distance X from the edge 15 of the crimping part 5 to the position where the resins 13a and 13b are formed exceeds 5 times the resin thickness t, the resin 13a and 13b are put in a predetermined amount when the terminal is crimped as described later. It will be difficult to protrude only.

  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 ends of opposing barrels overlap each other during crimping. 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. 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.

  Fig.6 (a) is an end elevation in the AA line cross section of FIG. As shown in FIG. 6A, when the crimping part 5 is rounded, the resin 13b is disposed 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. Is done.

  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.

  6B is an end view of the cross section taken along the line B-B in FIG. 5, and FIG. 7 is a cross-sectional view in the longitudinal direction of the pressure-bonding portion 5. As shown in FIG. 6B, when the crimping part 5 is compressed (arrow C in the figure) and the terminal 1 and the coated conductor 17 are crimped, the overlapping parts of the metals constituting the crimping part 5 (opposing barrels) The resin 13b can be protruded to the outside (overlapping portion between end portions) (arrow D in the figure). That is, when appropriate pressure bonding is performed, the resin 13b can protrude from the edge 15 to the outside along the overlapping portion of the metals formed along the longitudinal direction of the pressure bonding portion 5.

  In addition, as shown in FIG. 7, when the crimping portion 5 is compressed (arrow C in the figure) and the terminal 1 and the coated conductor 17 are crimped, the overlapping portion of the metal constituting the crimping portion 5 (the crimping portion 5 of the crimping portion 5). The resin 13a can be protruded to the outside (at the end of the terminal body 3 side where the rounded crimped portion is crushed and sealed) (arrow E in the figure). That is, when appropriate crimping is performed, the resin 13a can be protruded outside at the overlapping portion of the metal at the end of the crimping portion 5 on the terminal body 3 side.

  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 covered conductor 17 is crimped by the crimping part 5 of the terminal 1, and the terminal-attached electric wire 20 in which the resins 13 a and 13 b protrude to the outside in the overlapping part of the metals constituting the crimping part 5 can be obtained. it can.

  FIG. 8 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 of the resin 13a, 13b in each part differs depending on the compression amount. For example, the amount of protrusion of the resin 13a, 13b from the edge 15 is large in the strong pressure bonding portion with a large compression amount, and the amount of protrusion of the resin 13a, 13b from the edge 15 is small in the weak pressure bonding portion. Thus, the quality of crimping | compression-bonding can be determined by measuring the protrusion amount of resin 13a, 13b in each part, respectively, and comparing with a reference | standard.

  In addition, in order to judge the quality of crimping | compression-bonding, it is necessary to have the amount of protrusion of resin 13a, 13b exceeding 0 mm from any site | part of the edge part of the overlapping part of metals. On the other hand, if the amount of protrusion of the resins 13a and 13b 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 amount of protrusion of the resins 13a and 13b is determined to be acceptable when the amount of protrusion is equal to or less than the thickness t of the resins 13a and 13b and is equal to or less than a predetermined amount set for each part. Note that the amount of protrusion of the resins 13a and 13b 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 after pressure bonding. For this reason, the overlapping portion of the metal is reliably sealed, and moisture can be prevented from entering the inside. That is, it is possible to provide a method for managing crimping between the coated conductor 17 and the terminal 1.

  Moreover, since resin 13a, 13b does not protrude from the edge part of the terminal 1 before crimping, it can suppress that resin 13a, 13b is damaged at the time of handling or a crimping | compression-bonding operation.

  Next, a second embodiment will be described. FIG. 9 is a perspective view showing an example using the terminal 1a according to the second embodiment. In the following description, the same functions as those of the terminal 1 and the like are denoted by the same reference numerals as those in FIGS.

  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 needs to be formed on the entire inner circumference of the crimping portion 5 near the end on the terminal main body 3 side.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. In addition, also in the terminal 1 according to the first embodiment, when the sealing part at the end of the crimping part 5 on the terminal body 3 side is sealed after welding, the resin 13a in FIG. It is unnecessary. Therefore, in this case, only the resin 13b has to be formed on at least a part in the vicinity of the edge 15 in the width direction of the crimping portion 5. Thus, in the present invention, both the resin 13a and the resin 13b are not necessarily required, but at least a part near the edge in the width direction of the crimping part 5 or the terminal body 3 side of the conductor crimping part 7 Any one of the resins 13a and 13b may be disposed on at least a part of the end portion of the.

  Next, a third embodiment will be described. FIG. 10 is a developed plan view of the terminal 1b according to the third embodiment. The terminal 1b has substantially the same configuration as the terminal 1, but the resin arrangement is different.

  In the terminal 1b, the resin 13c is connected not only in the vicinity of the edge 15 in the width direction of the crimping part 5 and in the vicinity of the end of the conducting wire crimping part 7 on the terminal body 3 side, but also in the serration 11 (the conducting wire 19 and the terminal 1b). It is arranged on almost the entire surface other than (part). The resin 13c is also arranged at a predetermined distance from the edge 15 of the crimping part 5. For this reason, the resin 13 c does not protrude from the edge of the crimping part 5 before the crimping.

  According to the third 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 edge part vicinity of the covering crimping | compression-bonding part 9 or the terminal main body 3 side edge part of the conducting-wire crimping | compression-bonding part 7, it will be in other parts. A resin may be disposed.

  Next, a fourth embodiment will be described. FIG. 11 is a developed plan view of a terminal 1c according to the fourth embodiment. The terminal 1c has substantially the same configuration as the terminal 1b, but the resin arrangement is different. In the following embodiment, an example in which the resin 13c is formed on substantially the entire surface of the crimping portion 5 will be described. However, the present invention can also be applied to the case where the resin 13b is formed. In the terminal 1c, the distance (for example, I in the figure) from the edge 15 of the crimping part 5 to the position where the resin 13c is formed varies depending on the position in the longitudinal direction of the terminal 1c.

  For example, in the strong pressure bonding part (F in the figure), the distance (I in the figure) from the edge 15 of the pressure bonding part 5 to the position where the resin 13c is formed is long, and in the weak pressure bonding part (H in the figure) 5, the distance from the edge 15 of the crimping part 5 to the position where the resin 13c is formed is short, and in the intermediate crimping part (G in the figure), the distance from the edge 15 of the crimping part 5 to the position where the resin 13c is formed is It is set between the same distance in the landing portion and the intermediate pressure bonding portion. In this way, in order to change the distance from the edge 15 depending on the position in the longitudinal direction of the terminal, at least in the vicinity of one edge 15 in the width direction of the crimping part 5 in the longitudinal direction of the crimping part 5. The resin 13c (or the resin 13b) needs to be disposed along. At this time, the crimping is performed such that the end in the width direction of the crimping part 5 on the side where the distance from the edge 15 is changed depending on the part is on the upper side (outer peripheral side) when the crimping part 5 is rounded. Done.

  According to the fourth embodiment, an effect similar to that of the first embodiment can be obtained. Further, by changing the distance from the edge 15 to the resin 13c according to the strength of the pressure bonding, the amount of protrusion of the resin 13c can be made substantially uniform depending on the part after the pressure bonding. For example, in a strong pressure bonding portion, the amount of resin that protrudes from the edge portion 15 usually increases at the time of pressure bonding, but by preliminarily disposing the resin 13c at a position away from the edge portion, the resin is prevented from excessively protruding. Can do. Similarly, in the weakly crimped portion, the amount of resin that protrudes from the edge 15 is usually reduced during crimping, but the resin is reliably protruded from the edge 15 by arranging the resin 13c in a position close to the edge in advance. be able to.

  In addition, by making the amount of protrusion of the resin substantially uniform according to the site as described above, the crimping management between the coated conductor and the terminal becomes easy. That is, when managing the quality of pressure bonding based on the amount of protruding resin after pressure bonding, the whole can be managed with the same management value without setting a management value for each part.

  Next, a fifth embodiment will be described. FIG. 12 is a developed plan view of a terminal 1d according to the fifth embodiment, and FIG. 13 is a sectional view taken along line JJ in FIG. The terminal 1d has substantially the same configuration as the terminal 1b, but the form of the resin is different. In the terminal 1d, the thickness of the crimp portion 5 varies depending on the position in the longitudinal direction of the terminal 1d.

  For example, as shown in FIG. 13, in the strong pressure bonding part (F in the figure), the thickness of the pressure bonding part 5 is thin, and in the weak pressure bonding part (H in the figure), the thickness of the pressure bonding part 5 is thick. In middle G), the thickness of the crimping part 5 is set between the thicknesses of the strong crimping part and the middle crimping part. Note that it is not necessary to change the thickness of the resin 13c depending on the longitudinal portion of the terminal over the entire width of the resin 13c, and at least the thickness of the resin 13c (or the resin 13b) in the vicinity of one edge 15 in the width direction of the crimping portion 5 is set. Change it.

  According to the fifth embodiment, an effect similar to that of the first embodiment can be obtained. Further, by changing the thickness of the resin 13c according to the strength of the pressure bonding, the amount of protrusion of the resin 13c can be made substantially uniform depending on the portion after the pressure bonding. For example, in the strong pressure bonding portion, the amount of resin that protrudes from the edge 15 at the time of pressure bonding usually increases, but by reducing the thickness of the resin 13c at this portion, the resin can be prevented from excessively protruding. Similarly, in the weakly crimped portion, the amount of resin that protrudes from the edge 15 at the time of crimping is usually reduced, but by increasing the thickness of the resin 13c at this portion, the resin can be reliably protruded from the edge 15. .

  Thus, in the present invention, either the distance from the edge of the crimping part 5 to the position where the resin 13c is formed or the thickness of the resin 13c is made different depending on the position in the longitudinal direction of the terminal. After the pressure bonding, the amount of protrusion of the resin 13c can be made substantially uniform regardless of the part. For this reason, the crimping | crimping management of a covering conducting wire and a terminal becomes easy.

  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, 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,. …… Resin 15 ……… Edge 17 ……… Covered lead 19 ……… Conductor 20 ……… Wire with terminal 21 ……… Cover 23 ……… Welding

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,
Resin is disposed on at least part of the edge in the width direction of the crimping part or at least part of the terminal body side end of the lead crimping part,
The resin is disposed on the terminal surface, and the distance from the edge of the crimping portion to the position where the resin is formed, or the thickness of the resin varies depending on the position in the longitudinal direction of the terminal. Terminal to be used. The crimping part has a substantially U-shaped barrel shape, and at the time of crimping, is an overlap type in which ends of opposing barrels overlap each other,
Resin is disposed at least in the vicinity of the edge in the width direction of the crimping part,
The terminal according to claim 1, wherein a distance from an edge of the crimping portion to a position where the resin is formed varies depending on a position in a longitudinal direction of the terminal. The crimping part has a substantially U-shaped barrel shape, and at the time of crimping, is an overlap type in which ends of opposing barrels overlap each other,
Resin is disposed at least in the vicinity of the edge in the width direction of the crimping part,
The terminal according to claim 1, wherein a thickness of the resin varies depending on a position in a longitudinal direction of the terminal. A terminal-attached electric wire to which the terminal according to any one of claims 1 to 3 and a covered conductor are connected,
An electric wire with a terminal, wherein the coated conductive wire is crimped by the crimping portion, and the resin protrudes to the outside in an overlapping portion of metals constituting the crimping portion.   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 4 characterized by the above-mentioned.   A wire harness in which a plurality of electric wires with terminals according to claim 4 or 5 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,
Resin is disposed on at least a part of the edge of the covering crimping part or at least a part of the terminal body side end of the lead crimping part,
The resin is disposed on the terminal surface,
The tip of the coated conductor is disposed in the crimping portion, the coating portion of the coated conductor is crimped by the coated crimping portion, the conductor exposed from the coating portion is crimped by the lead crimping portion, and the crimping portion A method of connecting a coated conductor and a terminal, wherein the resin protrudes to the outside in the overlapping portion of the metals constituting the wire. 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,
Resin is disposed on at least a part of the edge of the covering crimping part or at least a part of the terminal body side end of the lead crimping part,
The resin is disposed on the terminal surface,
The tip of the coated conductor is disposed in the crimping portion, the coating portion of the coated conductor is crimped by the coated crimping portion, the conductor exposed from the coating portion is crimped by the lead crimping portion, and the crimping portion In the overlapping part of the metals constituting the above, the resin protrudes to the outside,
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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