JP6684297B2 - Wire with terminal, wire harness - Google Patents

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 electric appliances, electric wires made of a copper-based material having excellent electrical conductivity have been used as power lines and signal lines. In particular, in the field of automobiles, high performance and high functionality of vehicles are being rapidly advanced, and various kinds of electric devices and control devices mounted on vehicles are increasing. Therefore, along with this, the number of electric wires with terminals used tends to increase.

  On the other hand, as environmental problems are drawing attention, weight reduction of automobiles is required. Therefore, there is a problem in that the weight increases as the usage of the wire harness increases. For this reason, lightweight aluminum electric wires have been attracting attention in place of the conventionally used copper wires.

  Here, a connecting terminal is used when connecting such electric wires to each other or at a connecting portion such as a device. However, even in the case of an electric wire with a terminal using an aluminum electric wire, copper having excellent electric characteristics may be used in the terminal part due to the reliability of the connection part and the like. In such a case, an aluminum electric wire and a copper terminal are joined and used.

  However, when different metals are brought into contact with each other, 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 of the electrically base aluminum side progresses due to the influence of water splashing on the contact portion and dew condensation. For this reason, the connection between the wire and the terminal at the connection part becomes unstable, and there is a risk that the electrical resistance will increase due to an increase in contact resistance and a decrease in wire diameter, and further, a disconnection will occur, resulting in a malfunction of the electrical component or a functional stoppage. is there.

  As a connection structure of such a crimp terminal to an electric wire, for example, there is a connection structure in which a water blocking sheet is provided before and after the conductor crimping section, and the tip end side of the conductor crimping section is covered with the water blocking sheet (Patent Document 1). 1).

JP, 2005-65148, A

  By disposing the water blocking sheet at the tip of the conductor crimping portion as in Patent Document 1, the joint portion between the electric wire conductor and the terminal is sealed, and water or the like can be prevented from entering the connecting portion.

  On the other hand, if the tip side of the conductor crimping part is excessively compressed, bending between the crimping part and the terminal body may occur, so-called bend up may occur, and in the worst case, the breakage between the terminal body and the crimping part may occur. There is a risk of Further, by forming a strong pressure-bonding portion at the tip of the conductor pressure-bonding portion, a so-called trumpet shape in which the end portion of the pressure-bonding portion opens is likely to result in a decrease in waterproofness. Further, if the water blocking sheet is excessively compressed, the water blocking sheet is likely to deteriorate over time due to compression strain, and the durability may decrease.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide an electric wire with a terminal and the like that can more surely obtain water stoppage at the tip side of a conductor crimping portion.

In order to achieve the above-mentioned object, a first invention is an electric wire with a terminal in which a terminal and a covered conductor are connected, wherein the terminal has a crimping portion to which the covered conductor is crimped, and a terminal body. The crimping portion includes a coating crimping portion that crimps the coating portion of the coated conductor, a conductive wire crimping portion that crimps a conductive wire exposed from the coating portion, and a sealing portion that is closer to the terminal body than the conductive wire crimping portion. , A resin is disposed on at least a part of the inner surface of the crimping portion, the resin is compressed, and the compression height of the sealing portion sealed by the resin is equal to that of the conductor wire crimping portion. It is an electric wire with a terminal characterized by being higher than the compression height.

A second invention is an electric wire with a terminal in which a terminal and a coated conductor are connected, wherein the terminal has a crimping portion to which the coated conductor is crimped and a terminal body, and the crimping portion is A cover crimping portion for crimping a covering portion of the covered conductor, a conductor crimping portion for crimping a conductor exposed from the covering portion, and a sealing portion closer to the terminal body than the conductor crimping portion, A resin is disposed on at least a part of the inner surface of the crimping portion, the compression height of the sealing portion is higher than the compression height of the conductor wire crimping portion, and the sealing portion projects toward the inner surface side. pushing portion is provided, the compressed height at the tip of the pushing portion is a wire with terminals, wherein a high Ikoto than the compression height of the conductor crimping portion.

  The pressing portion may be formed above and below the sealing portion, and the compression height of the tips of the upper and lower pressing portions may be higher than the compression height of the lead wire crimping portion.

A third invention is an electric wire with a terminal in which a terminal and a coated conductor are connected, wherein the terminal has a crimping portion to which the coated conductor is crimped and a terminal body, and the crimping portion is A cover crimping portion for crimping a covering portion of the covered conductor, a conductor crimping portion for crimping a conductor exposed from the covering portion, and a sealing portion closer to the terminal body than the conductor crimping portion, At least a part of the inner surface of the crimp portion, a resin is disposed, the compression height of the sealing portion is higher than the compression height of the lead wire crimp portion, the crimp portion, the covering crimp portion, the The conductor wire crimping portion and the sealing portion are integrally formed, and the crimping portion is an overlap type in which the ends of the barrels facing each other overlap each other at the time of crimping, and the width direction of the sealing portion. A notch is provided in a part near the end of the As such, the and crimping portion is compressed rounded, compressed height in the cutout portion, than the compression height of the conductor crimping portion is wire with terminals, wherein high Ikoto.

A fourth invention is an electric wire with a terminal in which a terminal and a coated conductor are connected, wherein the terminal has a crimping portion to which the coated conductor is crimped and a terminal body, and the crimping portion is A cover crimping portion for crimping a covering portion of the covered conductor, a conductor crimping portion for crimping a conductor exposed from the covering portion, and a sealing portion closer to the terminal body than the conductor crimping portion, At least a part of the inner surface of the crimp portion, a resin is disposed, the compression height of the sealing portion is higher than the compression height of the lead wire crimping portion, and the thickness of the resin provided in the sealing portion is a wire with terminals, wherein a thickness Ikoto than a thickness of the resin provided on the other site.

A fifth invention is an electric wire with a terminal in which a terminal and a coated conductor are connected, wherein the terminal has a crimping portion to which the coated conductor is crimped and a terminal body, and the crimping portion is A cover crimping portion for crimping a covering portion of the covered conductor, a conductor crimping portion for crimping a conductor exposed from the covering portion, and a sealing portion closer to the terminal body than the conductor crimping portion, At least a part of the inner surface of the crimp portion, a resin is disposed, the compression height of the sealing portion is higher than the compression height of the conductor wire crimp portion,
In the crimping portion, the covering crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed, and the crimping portion has an end portion where barrels facing each other overlap each other during crimping. It is a wrap type, and the width of the conductor crimping portion is wider than the width of the covering crimping portion, and the end portion of the conducting wire crimping portion on the outer side is more than the end portion of the covering crimping portion on the outer side. Also, the electric wire with a terminal is characterized by protruding in the width direction.

A sixth invention is an electric wire with a terminal in which a terminal and a covered conductor are connected, wherein the terminal has a crimping portion to which the covered conductor is crimped and a terminal body, and the crimping portion is A cover crimping portion for crimping a covering portion of the covered conductor, a conductor crimping portion for crimping a conductor exposed from the covering portion, and a sealing portion closer to the terminal body than the conductor crimping portion, At least a part of the inner surface of the crimp portion, a resin is disposed, the compression height of the sealing portion is higher than the compression height of the lead wire crimp portion, the crimp portion, the covering crimp portion, the The conductor wire crimping portion and the sealing portion are integrally formed, and the conductor wire crimping portion and the sealing portion of the crimping portion have opposite barrel ends overlapping each other, and the covering crimping portion is formed. includes wherein Rukoto ends of the barrel facing is butted to each other That is a terminal with a wire.

The compression height of the sealing portion at the center of the terminal width direction is preferably lower than the compression height of the covering crimp portion.
The conductor crimping portion may be provided with serrations, and the resin may be arranged so as to overlap a part of the serrations.
In the crimping portion, the covering crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed, and the crimping portion has an end portion where barrels facing each other overlap each other during crimping. It may be a lap type, and at least a part of the resin may be cut out at a portion inside the crimp portion.
The terminal may be made of copper or a copper alloy, and the conductor wire of the coated conductor wire may be made of aluminum or an aluminum alloy.

According to the first to sixth aspects, since the resin compression rate of the sealing portion at the tip of the conductor crimping portion is low, the end portion does not open in a so-called bend-up or trumpet shape. In addition, since the compressibility is not too high, it is possible to suppress the deterioration of the resin over time due to the compressive stress.

  Further, by setting the compression height of the sealing portion to be lower than the compression height of the coating pressure bonding portion, the resin of the sealing portion can be compressed at an appropriate compression rate.

  Further, in the case where a push-in portion protruding toward the inner surface side of the sealing portion is provided, the above-mentioned effect can be reliably obtained by making the compression height at the tip of the push-in portion higher than the compression height of the conductor wire crimping portion. You can

  Further, in the case where the push-in portions are formed above and below the sealing portion, the compression height between the tips of the upper and lower push-in portions is made higher than the compression height of the conductor wire crimping portion to ensure the above-mentioned effect. Obtainable.

  If the terminal is of the overlap type, make a cutout part in the vicinity of the end in the width direction of the sealing part and roll the compression part so that the cutout part is on the inside and compress it. Thus, the compression height of the sealing portion in the cutout portion can be made higher than the compression height of the conductor wire crimping portion by the thickness of the sealing portion.

  Moreover, by setting the thickness of the resin provided in the sealing portion to be thicker than the thickness of the resin provided in other portions, an appropriate amount of compression can be secured.

  Further, by disposing the resin so as to partially overlap the serrations provided in the conductor wire crimping portion, it is possible to prevent the resin from being displaced during crimping or the like.

  Further, when the terminal is an overlap type, by providing a notch in a part of the resin inside the crimp portion, it is possible to prevent the crimp portion from becoming thick when compressed. be able to.

  Also, when the terminal is an overlap type, the width of the conductor crimping part is made wider than the width of the covering crimping part, and the end of the conducting wire crimping part on the outer side is set to the outside of the covering crimping part. By projecting in the width direction rather than the end portion, it is possible to increase the wrap margin of the conductor wire crimping portion having a high crimping rate.

  In addition, the conductor wire crimping portion and the sealing portion have the ends of the barrels that face each other overlap each other, and the covering crimping portion has a large thickness when the ends of the barrels that face each other are butted against each other. Can be suppressed.

  In this way, the resin can reliably seal the connecting portion between the wire conductor and the crimping portion, so that the occurrence of electrolytic corrosion can be suppressed even when connecting dissimilar metals.

A seventh invention is a wire harness in which a plurality of electric wires with terminals according to any one of the first to sixth inventions are bundled.

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

  ADVANTAGE OF THE INVENTION According to this invention, the electric wire with a terminal etc. which can obtain the waterproofness in the front end side of a conductor crimping part more reliably can be provided.

The perspective view of the terminal 1. FIG. 3 is a developed plan view of the terminal 1. FIG. 3 is a perspective view showing a state in which a covered conductor wire 17 is arranged on the terminal 1. FIG. 3 is a perspective view showing a state in which the crimp portion 5 is rolled. The perspective view of the state which compressed the pressure bonding part 5. FIG. Sectional drawing of the longitudinal direction in the state which compressed the crimping | compression-bonding part 5. (A), (b) is sectional drawing of the longitudinal direction in the state which compressed the crimping | compression-bonding part 5 to another shape. The development top view of terminal 1a. FIG. 9 is a sectional view taken along line GG of FIG. 8. The expansion | deployment top view of the terminal 1b. The expansion | deployment top view of the terminal 1c. The development top view of terminal 1d. The perspective view of the state where the crimp portion 5 of the terminal 1d is rolled. The perspective view of the other state which rolled up the crimping | compression-bonding part 5 of the terminal 1d. The expansion | deployment top view of the terminal 1e. Sectional drawing of the longitudinal direction in the state which compressed the crimping | compression-bonding part 5 of the terminal 1e. The perspective view of the other state which rolled the crimping | compression-bonding part 5 of the terminal 1. The perspective view of terminal 1f.

(First embodiment)
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 covered 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 crimp portion 5. The terminal body 3 is formed by forming a plate-shaped material having a predetermined shape into a tubular body having a rectangular cross section. The terminal body 3 has, inside, 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 portion. In the following description, the terminal body 3 is an example that is a female terminal that allows insertion of an insertion tab (not shown) such as a male terminal, but in the present invention, the detailed shape of the terminal body 3 is described. Is not particularly limited. For example, an insertion tab for a male terminal may be provided instead of the female terminal body 3.

  The crimp portion 5 is a portion to be crimped with the coated conductor wire, and has a barrel shape in which the cross-sectional shape perpendicular to the longitudinal direction of the terminal 1 is a substantially U shape. The crimping part 5 includes a conductor crimping part 7 for crimping a conductor part exposed from the covering part on the tip side of the covered conductor, a covering crimping part 9 for crimping a part of the covering part of the covering conductor wire, and a conducting wire part of the covering conductor wire. Further, the sealing portion 15 is provided on the tip side and seals the tip of the crimp portion 5 (the end portion on the terminal body 3 side). The conductor wire crimping portion 7, the cover crimping portion 9, and the sealing portion 15 are integrally formed. That is, the crimping section 5 is composed of the sealing section 15, the conductor crimping section 7, and the covering crimping section 9 in order from the terminal body 3 side.

  A serration 11 is provided in a part of the inner surface of the conductor crimping portion 7 in the width direction (a circumferential direction when the crimping portion 5 described later is rolled). By forming the serrations 11 in this way, when the conductor wire is pressure-bonded, the oxide film on the surface of the conductor wire is easily destroyed and the contact area with the conductor wire can be increased. In this embodiment, since the serrations 11 are formed so as to extend in at least one of the width directions, it is possible to further increase the area of the serrations 11 that comes into contact with the conductor wire during crimping.

  The resin 13 is disposed on the entire widths of the sealing portion 15 and the cover crimping portion 9 and the portions of the conductor crimping portion 7 other than the serrations 11. That is, the resin 13 is disposed on at least a part of the inner surface of the crimp portion 5. When the thickness of the metal portion of the crimp portion 5 is 0.3 mm, the thickness of the resin 13 is, for example, about 0.1 to 0.2 mm.

  The resin 13 is, for example, polyamideimide. The resin 13 may be provided on a predetermined portion of the terminal 1 by coating, and a resin sheet of butyl rubber, silicone rubber, epoxy resin, urethane rubber or the like formed in a predetermined shape in advance may be attached at a predetermined position. Good. Further, the resin 13 may be arranged in a developed state before being molded into the terminal shape, or may be arranged after being molded into the terminal shape.

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

  Next, the tip of the coated conductive wire 17 is placed on the crimp portion 5. At this time, the conductor wire 19 exposed from the covering portion 21 is arranged in the conductor wire crimping portion 7 (formation portion of the serration 11), and the covering portion 21 is arranged in the covering crimping portion 9.

  Next, as shown in FIG. 4, in the crimp portion 5, the plate-shaped material is rolled so as to form a cylindrical body having a circular cross section so that the tips of the barrels facing each other overlap each other. That is, the terminal 1 is an overlap type in which the ends of the barrels facing each other overlap each other during crimping. At this time, the crimp portion 5 is rounded so that the end portion on the side where the serrations 11 are formed is located inside. When the crimp portion 5 is rolled, the covering crimp portion 9 has a larger diameter than the conductor crimp portion 7.

  Next, as shown in FIG. 5, the crimping portion 5 is collectively compressed by a mold (not shown), the covering crimping portion 9 crimps the covering portion 21 of the covered conductor wire 17, and the conductor wire crimping portion 7 is formed. Then, the conductor wire 19 exposed from the covering portion 21 is crimped. At this time, the sealing portion 15 is compressed and the tip of the crimp portion 5 is sealed. In this way, the electric wire with terminal 20 in which the terminal 1 and the covered conductor 17 are connected is formed.

  FIG. 6 is a longitudinal sectional view of the crimp portion 5. When the crimp portion 5 is compressed to crimp the terminal 1 and the covered conductor wire 17, the resin 13 is compressed between the outer peripheral portion of the covered portion 21 and the covered crimp portion 9. The resin 13 is also compressed between the overlapping portions of the barrels. The resin 13 is also compressed in the sealing portion 15. Since the resin 13 is not arranged in the serration 11, the conductor wire 19 and the conductor wire crimping portion 7 are electrically connected to each other.

  Here, as appropriate crimping conditions, the compression rate of the conductor crimping section is 40 to 70%, and the compression rate of the covering crimping section is 60 to 90%. Here, the compression rate of the crimp portion is calculated by (cross-sectional area after compression) / (cross-sectional area before compression). That is, the compression rate of the conductor wire crimping portion is (cross-sectional area of the conductor wire 19 after compression) / (conductor wire 19 cross-sectional area before compression), and the compression rate of the covering crimping portion is (the covering portion 21 after compression). Cross-sectional area of the coated conductive wire 17 in /) / (cross-sectional area of the coated conductive wire 17 in the coated portion 21 before compression). If the compressibility is not appropriate, sufficient water blocking ability and pull-out strength cannot be obtained.

  The compression height (B in the drawing) of the sealing portion 15 is higher than the compression height (A in the drawing) of the conductor wire crimping portion 7. That is, the conductor wire crimping portion 7 has a larger amount of compression than the sealing portion 15. Further, it is desirable that the compression height (B in the drawing) of the sealing portion 15 is lower than the compression height (C in the drawing) of the covering pressure bonding portion 9. Here, the compressed height refers to the height of the inner surface of the crimp portion of the terminal at the center of the terminal width direction.

  By reducing the compression height of the conductor wire crimping portion 7, conduction between the conductor wire 19 and the conductor wire crimping portion 7 can be reliably obtained. If the compression height of the sealing portion 15 is too low (that is, if the compression amount of the sealing portion 15 is too large), bending between the crimping portion 5 and the terminal body 3 may cause so-called bend-up. Therefore, in the worst case, the space between the terminal body 3 and the crimp portion 5 may be broken.

  Further, when the sealing portion 15 is strongly pressure-bonded, the sealing portion 15 has a so-called trumpet shape in which the end portion of the pressure-bonding portion 5 opens, and as a result, there is a possibility that the water blocking performance is reduced. Further, if the resin 13 of the sealing portion 15 is excessively compressed, the resin 13 is likely to deteriorate over time due to compressive strain, and the durability may deteriorate. In the present invention, by making the amount of compression of the sealing portion 15 appropriate, the waterproofness of the sealing portion 15 can be reliably ensured.

  On the other hand, if the amount of compression of the sealing portion 15 is not sufficient, it may be difficult to secure the waterproofness. Therefore, by compressing the sealing portion 15 to such an extent that the compression height of the covering pressure-bonding portion 9 is not exceeded, it is possible to more reliably ensure the waterproofness.

  In addition, as shown in FIG. 7A, the pushing portion 23 may be formed in a part of the sealing portion 15. In the example shown in FIG. 7A, a pressing portion 23 that projects inward is provided above the sealing portion 15. The pushing portion 23 has a gentle arc shape. By forming the arc shape, it is possible to prevent a gap from being formed in the resin 13 in the vicinity of the base of the inner surface of the push-in portion 23, and it is possible to reliably ensure the waterproofness.

  In this way, when forming the push-in portion 23, the compression height (D in the figure) at the tip of the push-in portion 23 may be higher than the compression height (A in the figure) of the conductor wire crimping portion. Further, the compression height (D in the figure) of the sealing section 15 at the tip of the pushing section 23 is preferably lower than the compression height (C in the figure) of the covering pressure-bonding section 9.

  In addition, as shown in FIG. 7B, the push-in portions 23 may be formed above and below the sealing portion 15. In this way, when forming the push-in portion 23, the compression height (E in the figure) at the tips of the upper and lower push-in portions 23 may be higher than the compression height (A in the figure) of the conductor wire crimping portion. . Further, the compression height (E in the figure) between the tips of the push-in portions 23 is preferably lower than the compression height (C in the figure) of the covering pressure-bonding portion 9.

  As described above, according to the present embodiment, the compression height of the sealing portion 15 does not become lower than the compression height of the conductor wire crimping portion 7, so that the sealing portion 15 is strongly pressure-bonded to bend up. It is possible to suppress the occurrence of water and the decrease in water blocking performance.

  In addition, since the compression height of the sealing portion 15 does not exceed the compression height of the covering pressure-bonding portion 9, it is possible to suppress a decrease in water shutoff due to insufficient compression.

  Further, by forming the push-in portion 23 in the sealing portion 15, it is possible to reliably ensure the waterproofness of the sealing portion 15. At this time, since the push-in portion 23 is formed in a circular arc shape on the inner surface side from a portion other than the push-in portion 23, a gap is not formed between the resin 13 and the sealing portion 15, In addition, since no local stress is applied to the resin 13, the waterproofness can be secured.

  Even when the push-in portion 23 is formed, the compression height at the tip of the push-in portion 23 does not become lower than the compression height of the lead wire crimping portion 7, so that the sealing portion 15 is strongly crimped, which results in bend up. It is possible to suppress the occurrence and the decrease in water blocking property.

(Second embodiment)
Next, a second embodiment will be described. 8 is a developed plan view of the terminal 1a according to the second embodiment, and FIG. 9 is a sectional view taken along line GG of FIG. In the following description, configurations having the same functions as those of the terminal 1 and the like will be denoted by the same reference numerals as those in FIGS. 1 to 7, and redundant description will be omitted.

  The terminal 1a has almost the same configuration as the terminal 1, but the form of the resin 13 is different. The thickness of the resin 13 of the terminal 1a differs depending on the part. The thickness of the resin 13 provided at the portion of the sealing portion 15 (H in the drawing) is thicker than the thickness of the resin 13 provided at the other portion (F in the drawing and the wire crimping portion 7 and the cover crimping portion 9). .

  When the compression height of the sealing portion 15 is made higher than the compression height of the lead wire crimping portion 7 by increasing the thickness of the resin 13 at the portion of the sealing portion 15 to make the compression strength of the resin 13 proper. Also, the sealing portion 15 can be reliably sealed. It should be noted that, by increasing the thickness, the excessive resin 13 easily protrudes toward the terminal body 3 side during compression, and as described above, the excessive compressive stress of the resin 13 can be suppressed.

  Further, since the resin 13 of the conductor wire crimping portion 7 and the coating crimping portion 9 is thin, it is possible to suppress an increase in the outer diameter of the coating crimping portion 9 especially when the coating crimping portion 9 is compressed. Since the outer diameter of the cover crimp portion 9 can be suppressed from increasing, the terminal 1a can be attached to the connector without increasing the cavity size of the connector.

  According to the second embodiment, the same effect as that of the first embodiment can be obtained. Further, by changing the thickness of the resin 13 depending on the part, it is possible to ensure the waterproofness and to prevent the outer diameter of the crimp portion 5 from becoming too thick.

(Third Embodiment)
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 almost the same configuration as the terminal 1, but the arrangement of the resin 13 is different. The resin 13 of the terminal 1b is arranged so as to overlap a part of the serration 11. For example, in the illustrated example, the resin 13 is overlapped on one row of the serrations 11 on the terminal body 3 side. In addition, the serration 11 on which the resin 13 is overlapped may be on the side of the coating pressure-bonding section 9 or on both sides.

  In the conductor wire crimping portion 7, conduction with the conductor wire 19 can be obtained by the serration 11 not covered with the resin 13. On the other hand, since a part of the resin 13 overlaps the serration 11, the effect of preventing the positional displacement of the resin 13 can be obtained even during pressure bonding.

  Further, since the movement of the resin 13 at the portion overlapping the serration 11 is restricted, the resin 13 flows outward during the pressure bonding. In particular, if the overlapping portion of the resin 13 and the serration 11 is on the terminal body 3 side, the resin 13 flows to the sealing portion 15 side, and the sealing portion 15 can be reliably sealed. Even in this case, since the compression height of the sealing portion 15 is higher than that of the lead wire crimping portion 7, the resin 13 efficiently flows into the sealing portion 15, and the amount of compression of the resin 13 is appropriate, so that the waterproofness is improved. Can be secured.

  According to the third embodiment, the same effect as that of the first embodiment can be obtained. Further, it is possible to efficiently regulate the positional deviation of the resin 13 during pressure bonding and the flow direction of the resin 13.

(Fourth Embodiment)
Next, a fourth embodiment will be described. FIG. 11 is a developed plan view of the terminal 1c according to the fourth embodiment. The terminal 1c has substantially the same configuration as the terminal 1, except that the resin 13 is not arranged on substantially the entire surface of the crimp portion 5, but a resin cutout portion 25 is formed.

  The resin cutout portion 25 is formed by cutting out a part of the resin 13 at the edge portion on the inner side of the crimp portion 5 when the crimp portion 5 is rolled. It should be noted that the resin notch portion 25 may be formed on at least a part of the edge portion side on the inner side when the crimp portion 5 is rolled, but as shown in the figure, it is formed on the covering crimp portion 9. Is desirable. Since the coated crimp portion 9 has a high compression height and has the largest outer diameter even after crimping, by forming the resin cutout portion 25, the coated crimp portion 9 after crimping by the thickness of the resin 13 is formed. The outer diameter of can be reduced.

  Further, it is desirable that the width of the resin notch portion 25 (in the left-right direction in the drawing) be narrower than the lap margin when the crimp portion 5 is rolled. By doing so, when the pressure-bonding portion 5 is rolled, the resin 13 is disposed on at least a part of the wrap portion, and the waterproofness of the wrap portion can be secured.

  According to the fourth embodiment, the same effect as that of the first embodiment can be obtained. Further, by forming the resin cutout portion 25, it is possible to prevent the outer diameter of the pressure-bonded portion 5 after pressure bonding from increasing.

(Fifth Embodiment)
Next, a fifth embodiment will be described. FIG. 12 is a developed plan view of the terminal 1d according to the fifth embodiment. The terminal 1d has substantially the same configuration as the terminal 1, but when the crimping portion 5 is rolled, the end portions of the conductor wire crimping portion 7 and the sealing portion 15 which are on the outer side are covered by crimping on the outer side. A width direction protruding portion 27 is formed so as to protrude in the width direction from the end of the portion 9. That is, the conductor crimping portion 7 and the sealing portion 15 are wider than the covering crimping portion 9.

  The resin 13 is formed on substantially the entire surface of the crimp portion 5 except for the serrations 11. That is, the resin 13 is also arranged on the width direction protruding portion 27.

  FIG. 13 is a perspective view showing a state in which the crimp portion 5 of the terminal 1d is rolled. As shown in the figure, in the present embodiment, the wrap margin between the barrels in the conductor crimping section 7 and the sealing section 15 (the circumferential lap length in the circumferential direction) is larger than the lap margin in the sheath crimping section 9 (lap length in the circumferential direction). The wrap length) is larger. That is, the wrapping margin between the barrels in the covering crimping portion 9 and the wrapping margin between the barrels in the conductor crimping portion 7 and the sealing portion 15 are different.

  When the crimping portion 5 is crimped in this state, the lap margin between the barrels in the conductor crimping portion 7 which is particularly strongly crimped and the sealing portion 15 at the tip thereof becomes large. For this reason, it is possible to suppress the intrusion of water from the lap portion. It should be noted that if the lap margin between the barrels in the conductor crimping section 7 can be secured, the lap margin between the barrels in the sealing section 15 does not necessarily need to be larger than the lap margin in the covering crimp section 9. That is, at least the lap margin between the barrels in the formation range of the serrations 11 in the conductor crimping portion 7 may be made larger than the lap margins of other parts.

  According to the fifth embodiment, the same effect as that of the first embodiment can be obtained. Further, in the wire crimping portion 7 of the strong crimping portion, it is possible to prevent water from entering from the lap portion between the barrels.

(Sixth Embodiment)
Next, a sixth embodiment will be described. FIG. 14 is a perspective view showing another embodiment of the terminal 1d described above. As described above, the terminal 1d has almost the same configuration as the terminal 1, but when the crimping portion 5 is rolled, the ends of the conductor wire crimping portion 7 and the sealing portion 15 on the outer side are outward. The width direction protruding portion 27 is formed so as to protrude in the width direction from the end portion of the covering pressure bonding portion 9 on the side.

  In the present embodiment, in the coated crimp portion 9, the barrel ends do not overlap each other, but the barrel ends are butted to each other at the butted portion 29, and are welded and integrated by, for example, laser welding. That is, the covering pressure-bonding portion 9 is formed by rounding the plate-shaped material so as to form a cylindrical body having a circular cross section, and abutting the edges 29 of the plate-shaped material with each other and joining them together at the butting portion 29. . The covered conductive wire 17 is inserted from the rear end of the crimp portion 5 formed in a tubular shape. By doing so, since the barrels do not overlap with each other in the coated crimp portion 9, it is possible to prevent the coated crimp portion 9 from becoming thick.

  On the other hand, since the conductor wire crimping portion 7 and the sealing portion 15 are not thicker than the covering crimping portion 9, the ends of the barrels facing each other can be overlapped with each other, and the waterproofness can be obtained by the resin 13.

  According to the sixth embodiment, the same effect as that of the first embodiment can be obtained. Further, since the barrels do not overlap each other in the coated crimp portion 9, it is possible to prevent the barrels from overlapping in the coated crimp portion 9 and prevent the coated crimp portion 9 from becoming thick.

(Seventh embodiment)
Next, a seventh embodiment will be described. FIG. 15 is a developed plan view of the terminal 1e according to the seventh embodiment, and FIG. 16 is a longitudinal sectional view of the crimp portion 5. The terminal 1e has almost the same configuration as the terminal 1, but the form of the sealing portion 15 is different.

  As shown in FIG. 15, the terminal 1 e has a notch 31 formed in a part of the sealing portion 15. The cutout portion 31 is formed in a part in the vicinity of the end portion on the inner side when the crimp portion 5 is rolled and the end portions are overlapped with each other.

  Further, the terminal 1 e has a protrusion 33 formed on a part of the sealing portion 15. When the crimping portion 5 is rolled up and the end portions are overlapped with each other, the protrusion 33 is in the vicinity of the end portion on the outer side and projects from the end portion of the crimping portion 5 toward the terminal body 3. The resin 13 need not be arranged on the protrusion 33.

  As shown in FIG. 16, when the crimp portion 5 is rolled and compressed so that the cutout portion 31 is on the inner side, and the covered conductor wire 17 is crimped to the terminal 1e, the sealing portion 15 has a thickness equal to that of the cutout portion 31. Only, the compression height (I in the figure) increases. That is, in this case, the compression height of the sealing portion 15 is from the bottom surface to the inner surface side of the outer barrel which is superposed. Therefore, the compression height (I in the drawing) of the notch 31 of the sealing portion 15 can be easily made higher than the compression height (A of the drawing) of the conductor wire crimping portion 7. That is, even if the outer dimensions of the sealing portion after the crimping are not changed, the compression rate in the sealing portion 15 is increased by the amount of the notch 31 formed, and the crimping portion 5 and the terminal body 3 are Bend-up that bends between the sections is less likely to occur.

  In this case as well, it is desirable that the compression height of the sealing portion 15 be lower than the compression height (C in the figure) of the covering crimp portion 9.

  Further, the protrusion 33 is bent so as to close a part of the opening at the tip of the sealing portion 15. The protrusion 33 suppresses the resin 13 of the sealing portion 15 from flowing out during compression, and holds the resin 13 inside the sealing portion 15. By doing so, it is possible to properly hold the resin 13 in the sealing portion 15 and to secure the waterproofness.

  According to the seventh embodiment, the same effect as that of the first embodiment can be obtained. In addition, the cutout portion 31 can easily increase the compression height of the sealing portion 15. Further, the protrusion 33 can prevent the resin 13 in the sealing portion 15 from flowing out.

(Eighth Embodiment)
Next, an eighth embodiment will be described. FIG. 17 is a perspective view in which the crimp portion 5 of the terminal 1 is rolled. In the embodiment described so far, at least the conductor wire crimping portion 7 and the sealing portion 15 have the barrels overlapped with each other, but in the present embodiment, the butting portion 29 over the entire length of the crimping portion 5. Is formed.

  In this case, the plate-shaped material is rolled over the entire length of the crimping portion 5 of the terminal 1 so as to form a cylindrical body having a circular cross section, and the edges of the plate-shaped material are abutted and joined at the abutting portion 29 to be integrated. As a result, the crimp portion 5 is formed. That is, in the crimp portion 5, the barrels do not overlap with each other, and the end portions are welded to each other to form a tubular shape.

  According to the eighth embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the lap portion is not formed, the water intrusion path is reduced, and the water blocking performance can be improved. In addition, the embodiment shown in FIG. 14 is obtained by shortening the welding length of the present embodiment.

(9th Embodiment)
Next, a ninth embodiment will be described. FIG. 18 is a perspective view showing the terminal 1f. In the embodiment described so far, the crimp portion 5 has a substantially U-shaped barrel shape, and the crimp portion 5 is formed by integrally forming the cover crimp portion 9, the conductor crimp portion 7, and the sealing portion 15. However, the terminal 1f of the present embodiment is a so-called F crimp type.

  In the terminal 1f, the sealing portion 15, the conductor wire crimping portion 7, and the covering crimping portion 9 are formed separately. Even in this case, the covered conductor wire 17 is arranged in the crimp portion, and the sealing portion 15, the conductor wire crimp portion 7, and the cover crimp portion 9 are compressed, whereby the covered conductor wire 17 and the terminal 1f can be crimped. .

  In this case, water may enter from between the sealing portion 15, the conductor wire crimping portion 7, and the cover crimping portion 9, but sealing of the leading end side of the conductor wire 19 which is most affected by corrosion is sealed. By reliably performing the above, the occurrence of corrosion can be suppressed in, for example, indoor wiring. Moreover, you may coat | cover with resin etc. after pressure bonding as needed.

  According to the ninth embodiment, the same effect as the first embodiment can be obtained. As described above, the present invention can be applied to various types of terminals.

  Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims, and naturally, these are also within the technical scope of the present invention. It is understood that it belongs.

  For example, the embodiments described above can be combined with each other. Further, a plurality of electric wires with terminals according to the present invention can be bundled and used as a wire harness.

1, 1a, 1b, 1c, 1d, 1e, 1f ......... Terminal 3 .... Terminal body 5 ...... Crimping section 7 ... Conductor crimping section 9 ... Coating crimping section 11 ... Seration 13 ... …… Resin 15 ………… Sealing part 17 ………… Coated conductor 19 ………… Conductor wire 20 ………… Electric wire with terminal 21 ………… Coating part 23 ………… Pressed part 25 ………… Resin cutout part 27 …… ...... Width direction protruding part 29 ………… Mating part 31 ………… Notch part 33 ………… Projection

Claims (12)

An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
An electric wire with a terminal, characterized in that a compression height of the sealing portion that is obtained by compressing the resin and sealed by the resin is higher than a compression height of the lead wire crimping portion. An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
Compression height of the sealing portion, rather higher than the compression height of the wire crimping portion,
An electric wire with a terminal , wherein the sealing portion is provided with a push-in portion projecting toward the inner surface side, and a compression height at a tip of the push-in portion is higher than a compression height of the conductor wire crimping portion . 3. The terminal according to claim 2 , wherein the pushing portion is formed above and below the sealing portion, and a compression height between tips of the upper and lower pushing portions is higher than a compression height of the conductor wire crimping portion. With electric wire. An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
Compression height of the sealing portion, rather higher than the compression height of the wire crimping portion,
The crimping portion, the coating crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed,
The crimping portion is an overlap type in which the ends of the barrels facing each other overlap each other during crimping,
A notch is provided in a portion near the end in the width direction of the sealing portion,
The crimping part is rolled and compressed so that the notch part is on the inside, and the compression height in the notch part is higher than the compression height of the conductor wire crimping part. Electrical wire. An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
Compression height of the sealing portion, rather higher than the compression height of the wire crimping portion,
An electric wire with a terminal , wherein the thickness of the resin provided in the sealing portion is thicker than the thickness of the resin provided in another portion . An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
Compression height of the sealing portion, rather higher than the compression height of the wire crimping portion,
The crimping portion, the coating crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed,
The crimping portion is an overlap type in which the ends of the barrels facing each other overlap each other during crimping,
The width of the conductor crimping portion is wider than the width of the coating crimping portion, and the end of the conducting wire crimping portion on the outer side protrudes in the width direction from the end of the coating crimping portion on the outer side. An electric wire with a terminal characterized in that An electric wire with a terminal in which a terminal and a covered conductor are connected,
The terminals are
A crimping portion to which the coated conductor is crimped, and a terminal body,
The crimping portion is a cover crimping portion that crimps the covering portion of the covered conductor, a conductor crimping portion that crimps a conductor exposed from the covering portion, and a sealing portion on the terminal body side of the conductor crimping portion, Equipped with,
At least a part of the inner surface of the crimp portion, a resin is disposed,
Compression height of the sealing portion, rather higher than the compression height of the wire crimping portion,
The crimping portion, the coating crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed,
The conductor wire crimping portion and the sealing portion of the crimping portion are characterized in that ends of opposing barrels overlap each other, and the covering crimping portion has ends of opposing barrels butted against each other. An electric wire with a terminal. The compressed height of the said sealing part in the center of a terminal width direction is lower than the compressed height of the said cover crimping part, The electric wire with a terminal in any one of Claim 1 to 7 characterized by the above-mentioned. The conductor crimping portion is provided with serrations,
The said resin is arrange | positioned so that it may overlap a part of said serration, The electric wire with a terminal in any one of Claim 1 to 8 characterized by the above-mentioned. The crimping portion, the coating crimping portion, the conductor wire crimping portion, and the sealing portion are integrally formed,
The crimping portion is an overlap type in which the ends of the barrels facing each other overlap each other during crimping,
The electric wire with a terminal according to any one of claims 1 to 9 , wherein at least a part of the resin in a portion inside the crimp portion is cut out.   The said terminal is made of copper or a copper alloy, The conductor wire of the said coated conductor wire is made of aluminum or an aluminum alloy, The electric wire with a terminal in any one of the Claims 1-10 characterized by the above-mentioned.   A wire harness comprising a plurality of electric wires with terminals according to any one of claims 1 to 11.

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