JP2015035258A - Electric wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a step for installing a terminal on an electric wire in the electric wire with a terminal which prevents water from intruding into the electric wire by using the terminal.SOLUTION: An electric wire 1 with a terminal includes: an electric wire 3 in which one end surface of a core wire 7 in the longitudinal direction is covered with an impermeable member 11, and a cover 9 is removed so that the core wire is exposed at a part of one end in the longitudinal direction; and a terminal 5 which is equipped with an electric wire crimping part 15, and in which the core wire exposed at the part of one end of the electric wire in the longitudinal direction is brought into contact with the electric wire crimping part to be covered with the electric wire crimping part, and one end of the electric wire in the longitudinal direction is held by the terminal since this electric wire crimping part is caulked.

Description

  The present invention relates to an electric wire with a terminal in which a terminal is installed at an end portion of the electric wire.

  Conventionally, an electric wire 301 with a terminal as shown in FIG. 10B is known (for example, see Patent Document 1). As shown in FIG. 9, the electric wire with terminal 301 is provided with a water stop material 307 on the electric wire crimping portion 305 of the terminal 303, and then, as shown in FIG. Thereafter, as shown in FIG. 10B, the cylindrical wire crimping portion 305 is further crimped and crushed on the opening side of the tip portion of the core wire 309.

  This prevents water and the like from entering the inside of the electric wire 311 (core wire 309) from the end of the electric wire 311.

JP2013-80682A

  By the way, in the electric wire 301 with a terminal, since the crimping | compression-bonding part 305 as shown in FIG.10 (b) is required, there exists a problem that the process of installing a terminal in an electric wire is complicated.

  This invention is made | formed in view of the said problem, and in the electric wire with a terminal which prevents the penetration | invasion of the water into the inside of an electric wire using a terminal, the process of installing a terminal in an electric wire can be simplified. It aims at providing the electric wire with a terminal.

  In the first aspect of the present invention, one end surface in the longitudinal direction of the core wire is covered with a water-impermeable member, and the covering body is removed so that the core wire is exposed at a part of one end portion in the longitudinal direction. And the wire crimping portion is caulked so that the core wire exposed at a part of one end portion in the longitudinal direction of the wire comes into contact with the wire crimping portion and the wire crimping is performed. And a terminal having a terminal that holds one end in the longitudinal direction of the electric wire.

  The invention according to claim 2 is the electric wire with terminal according to claim 1, wherein the wire crimping portion includes a crimping main body portion, a pair of proximal end crimping portions, and a pair of distal end side crimping portions. It is an electric wire with a terminal.

  According to a third aspect of the present invention, in the electric wire with a terminal according to the first or second aspect, the removal portion of the covering body generated so that the core wire is exposed at a part of one end portion in the longitudinal direction. The terminal-attached electric wire has an opening area that increases with distance from the core wire.

Invention of Claim 4 is equipped with the electric wire from which the coating body was removed so that a core wire may be exposed in a part of one end part of a longitudinal direction, and an electric wire crimp part, and this electric wire crimp part is crimped The core wire exposed at a part of one end portion in the longitudinal direction of the electric wire is in contact with the electric wire crimping portion and covered with the electric wire crimping portion, and holds the one end portion in the longitudinal direction of the electric wire. The terminal
The removal portion of the covering body, which is generated so that the core wire is exposed at a part of one end portion in the longitudinal direction, is a terminal-attached electric wire whose opening area becomes wider as the distance from the core wire increases.

  According to the present invention, in the electric wire with a terminal which prevents the penetration of water into the electric wire using the terminal, there is an effect that the process of installing the terminal on the electric wire can be simplified.

It is a perspective view of the electric wire with a terminal concerning the embodiment of the present invention. It is a figure which shows the process of providing an adhesive agent in an electric wire among the manufacturing processes of the electric wire with a terminal which concerns on embodiment of this invention. It is a figure which shows the peeling process of an electric wire among the manufacturing processes of the electric wire with a terminal which concerns on embodiment of this invention. It is a figure which shows the state just before installing an electric wire in a terminal in the manufacturing process of the electric wire with a terminal which concerns on embodiment of this invention. It is a terminal used for the electric wire with a terminal concerning an embodiment of the present invention, and is a perspective view showing a terminal concerning a modification. It is an electric wire used for the electric wire with a terminal concerning the embodiment of the present invention, and is a perspective view showing the peeled electric wire concerning a modification. It is sectional drawing of the electric wire with a terminal in which the electric wire by which the peeling shown in FIG. 6 was made | formed is used. (A) is an enlarged view of the VIII portion in FIG. 7 before crimping the terminal, (b) is an enlarged view of the VIII portion in FIG. 7 after crimping the terminal, and (c) is shown in FIG. It is an enlarged view of the electric wire with a terminal in which the peeled electric wire is used, and is a figure corresponding to Drawing 8 (b). It is a perspective view which shows the conventional electric wire with a terminal. It is a perspective view which shows the conventional electric wire with a terminal.

  As shown in FIGS. 1 and 4, the electric wire with terminal 1 according to the embodiment of the present invention includes an electric wire 3 including a core wire (conductor portion) 7 and a covering (insulator) 9, and the electric wire. 3 and a terminal 5 installed in the apparatus 3.

  In the electric wire 3, one end surface in the longitudinal direction of the core wire 7 is covered with a water-impermeable member (water blocking material; for example, a resin film such as an adhesive) 11 different from the covering 9. Thereby, while the one end of the longitudinal direction of the core wire 7 (electric wire 3) is covered with the water-impermeable member 11, the core wire 7 is covered with the covering 9 over the full length from one end of the longitudinal direction to the other end. Yes.

  Moreover, in the electric wire 3, the covering body 9 and the water-impermeable member 11 are removed so that the core wire 7 is exposed at a part of one end portion in the longitudinal direction. That is, the covering body removing portion 13 is formed by peeling off the covering body 9, and the core wire 7 is exposed.

  The terminal 5 includes a plate-shaped wire crimping portion (wire crimping portion) 15. And since the wire crimping portion 15 is crimped, the terminal 5 holds one end portion of the electric wire 3 in the longitudinal direction, and further, the covering body removing portion 13 is formed so that the longitudinal direction of the electric wire 3 is formed. The core wire 7 exposed at a part of one end of the wire contacts the wire crimping portion 15 and is covered and sealed with the wire crimping portion 15.

  The core wire 7 is formed by, for example, twisting long and narrow cylindrical strands of metal such as aluminum. The covering body 9 is formed in a cylindrical shape (for example, a cylindrical shape) and covers the core wire 7 from one end in the longitudinal direction of the core wire 7 to the other end of the core wire 7. In other words, the length of the core wire 7 and the length of the cylindrical cover 9 are equal to each other, and the core wire 7 extends through the cylindrical cover 9. One end in the longitudinal direction of the core wire 7 and one end in the longitudinal direction of the covering body 9 coincide with each other, and the other end in the longitudinal direction of the core wire 7 coincides with the other end in the longitudinal direction of the covering body 9. Yes. The outer periphery of the core wire 7 and the inner periphery of the covering body 9 coincide with each other. Further, the electric wire 3 is formed in an elongated cylindrical shape.

  In addition, when the process of installing a terminal separately in the other end part of the longitudinal direction of the electric wire 3 is made, the coating | coated body 9 is the vicinity of the other end of the core wire 7 from the longitudinal end of the core wire 7 ( The core wire 7 is covered over a portion where the above processing is performed.

  An electric wire (electric wire before adhesive installation) 3 before the impermeable member (adhesive) 11 is installed includes a core wire 7 and a covering 9. The adhesive 11 is provided later on the electric wire 3 before installation of the adhesive. When the adhesive 11 is provided on the electric wire 3 before installation of the adhesive, the adhesive 11 is liquid or fluid.

  In the electric wire 3 before installation of the adhesive, the core wire 7 is exposed at one end and the other end in the longitudinal direction. And the adhesive agent 11 was provided in the electric wire 3 before adhesive installation, and the adhesive agent 11 was hardened, and the end surface of the longitudinal direction of the core wire 7 is coat | covered with the adhesive agent 11. FIG.

  In addition, since the adhesive 11 is provided on the electric wire 3 before the adhesive is installed, all the core wires 7 are covered and sealed with the covering 9 and the adhesive 11 except for the other end in the longitudinal direction.

  The adhesive 11 is provided at one end of the electric wire 3 in the longitudinal direction. That is, the adhesive 11 is provided in a state of being continuously and hardened between one end in the longitudinal direction of the electric wire 3 and a portion separated from the one end toward the other end by a predetermined distance.

  As a result, the adhesive 11 has a cylindrical bowl shape, the disk-shaped bottom plate portion 17 is in contact with one end surface in the longitudinal direction of the electric wire 3 and covers one end surface, and the cylindrical side plate portion 19. However, one end of the electric wire 3 is in contact with the outer periphery of the covering 9 and covers the covering 9. The electric wire 3 and the cured adhesive 11 are flexible (elastic).

  The electric wire 3 in which the covering 9 and the cured adhesive 11 are removed at a part of one end in the longitudinal direction and the core wire 7 is exposed will be described. As shown in FIG. 3 and the like, a portion (covering body removing portion) 13 from which the covering body 9 and the adhesive 11 are removed has a predetermined length at an intermediate portion of one end portion of the electric wire 3 in the longitudinal direction of the electric wire 3. In the circumferential direction of the electric wire 3, it has a size of about a half circumference. Thereby, when the covering body 9 and the adhesive agent 11 are spread on a plane, the covering body removing portion 13 has a rectangular shape.

  In addition, the side surface part (side wall part) 21 located in the boundary of the covering body removal part 13 and the covering body 9 is the inner periphery of the covering body 9 or the adhesive agent 11 as shown in FIG.8 (c), for example. Is orthogonal to. Moreover, it is desirable that the size of the covering body removing portion 13 be a minimum that can ensure the electrical and mechanical performance of the terminal-attached electric wire 1.

  The terminal 5 is formed by making a conductive flat plate material such as metal into a predetermined shape, and then bending the predetermined shape material as appropriate. The terminal main body (box-shaped portion) 23 and the wire crimping portion 15 are formed. And is configured. The wire crimping portion 15 protrudes from one end of the terminal main body portion 23.

  The length of the plate-shaped electric wire crimping portion 15 is approximately the same as the length of one end portion of the electric wire 3 (the length of the portion where the adhesive 7 is provided). Further, the value of the width of the plate-shaped electric wire crimping portion 15 is slightly larger than the value of the outer peripheral length of the adhesive 11 installed on the electric wire 3.

  The shape of the electric wire crimping part 15 before crimping is a semi-cylindrical side surface shape or “U” -shaped plate shape (when the “U” shape drawn on the plane is moved by a predetermined distance in the direction perpendicular to the plane) The three-dimensional shape represented by the locus of the “U”. And the electric wire 3 in which the adhesive 11 was installed is installed in the electric wire crimping part 15, and the electric wire crimping part 15 is crimped, so that the electric wire crimping part 15 becomes cylindrical and one end of the electric wire 3 is pressed. The wire 3 is slightly deformed and wrapped with a predetermined pressing force at the wire crimping portion 15, and the wire 3 is installed integrally with the terminal 5.

  In the state where the electric wire 3 is integrally installed on the terminal 5 by crimping the electric wire crimping portion 15 (the electric wire with terminal 1), the protruding direction of the electric wire crimping portion 15 and the longitudinal direction of the electric wire 3 coincide with each other. ing. Further, the core wire (exposed core wire) 7 exposed by removing the covering 9 and the adhesive 11 at a part of one end portion in the longitudinal direction of the electric wire 3 is connected to the width direction of the electric wire crimping portion 15 (the circumference of the electric wire 3). Direction) and located at the center of the wire crimping portion 15. Moreover, in the electric wire 1 with a terminal, as already understood, the position of the one end part of the longitudinal direction of the electric wire 3 and the position of the electric wire crimping part 15 are substantially in agreement with each other.

  Furthermore, the surroundings (covering body 9 and adhesion | attachment) of the covering body removal part (for example, through-hole) 13 formed by removing the covering body 9 and the adhesive agent 11 in a part of one end part of the electric wire 3 in the longitudinal direction. The portion of the agent 11 is in close contact with the wire crimping portion 15 over the entire circumference of the edge of the through hole (core wire exposing through hole) 13. Thus, water or the like is prevented from entering the inside of the electric wire 3 (at the core wire 7) from the outside of the electric wire 3 through the through hole 13 for exposing the core wire.

  In addition, although it is the adhesive agent 11, if the core wire 7 is sealed, the aspect provided only in the end of the electric wire 3 may be sufficient, and the through-hole 13 for core wire exposure in the longitudinal direction of the electric wire 3 may be sufficient. It may be interrupted at the middle part. Further, a notch may be provided in place of the core wire exposing through hole 13. In this case, the notch has a shape in which the core wire exposing through hole 13 is extended to one end of the electric wire 3 and is formed in a “U” shape.

  Next, the manufacturing method of the electric wire 1 with a terminal is demonstrated.

  First, as shown in FIG. 2, one end of the electric wire 3 is immersed in an uncured adhesive 11 to provide an uncured adhesive 11 on one end of the electric wire 3, and then the adhesive 11 is cured, One end of the electric wire 3 is covered with an adhesive 11.

  Next, as shown in FIG. 3, the covering removing part 13 is formed using a peeling jig 25. The peeling jig 25 includes a base 27, a pair of vertical peeling blades 29, and a pair of horizontal peeling blades 31. And the one end part of the electric wire 3 in which the adhesive agent 11 is provided in the base 27 is installed, a pair of vertical peeling blades 29 are brought close to the base 27, and a pair of horizontal peeling blades 31 are brought close to each other. Thus, the one end portion of the electric wire 3 is peeled, and the covering body removing portion 13 is generated, and the core wire 7 is exposed at the covering body removing portion 13.

  Then, the electric wire 3 with a terminal is produced | generated by installing the electric wire 3 in the terminal 5 and crimping the electric wire crimping part 15 from the state shown in FIG.

  According to the terminal-attached electric wire 1, one end face in the longitudinal direction of the core wire 7 is covered with the adhesive 11, and the covering 9 and the adhesive of the electric wire 3 are exposed so that the core wire 7 is exposed at a part of one end in the longitudinal direction. 11 is removed, and the wire crimping portion 15 is caulked so that the core wire 7 exposed at the covering removing portion 13 contacts the wire crimping portion 15 and is covered with the wire crimping portion 15. Therefore, it is possible to prevent the core wire 7 from corroding by preventing water from entering the inside of the electric wire 3.

  Further, when the terminal 5 is installed on the electric wire 3, the conventional two-step caulking (the caulking shown in FIG. 10 (a) and the caulking shown in FIG. 10 (b)) becomes unnecessary, and the electric wire crimping portion 15 is provided. It is only necessary to caulk in one step such as rounding, the step of installing the terminal 5 on the electric wire 3 can be simplified, and the manufacturing cost of the electric wire 1 with terminal can be reduced.

  Moreover, according to the electric wire 1 with a terminal, since the core wire 7 of the end of the electric wire 3 is covered with the adhesive agent 11, the core wire 7 can be reliably and easily sealed. Moreover, since the covering body removal part 13 for exposing the core wire 7 is provided after the core wire 7 at one end of the electric wire 3 is covered with the adhesive 11, it is bonded between the terminal 5 and the core wire 7 by the masking effect. The agent 11 does not enter, and deterioration of the conduction state between the terminal 5 and the core wire 7 is prevented.

  By the way, in the electric wire 1 with a terminal, since it is not necessary to crimp the electric wire crimping part 15 of a terminal and wrap up the one end part of the electric wire longitudinal direction like the conventional thing shown in FIG.10 (b), The form can be as shown in FIG.

  That is, the electric wire crimping portion 15 includes a crimping main body portion (caulking main body portion) 33, a pair of base end side crimping portions (base end side caulking portions) 35, and a pair of distal end side crimping portions (front end caulking portions) 37. It can be set as the structure provided with.

  In the electric wire crimping portion 15 before crimping the electric wire 3, as shown in FIG. 5, the crimping main body portion 33 is formed in a semi-cylindrical side surface shape. The proximal end crimping portion 35 is formed in a flat plate shape, and protrudes from a proximal end side portion (a portion on the box-like portion 23 side) of the electric wire crimping portion 15. The distal end side crimping portion 37 is also formed in a flat plate shape, and protrudes from the distal end side portion of the electric wire crimping portion 15 (the portion opposite to the box-like portion 23).

  In the state where the electric wire crimping portion 15 is crimped in FIG. 5, the proximal end crimping portion 35 is engaged with a portion 39 (see FIG. 4) located on one end side of the covering body removing portion 13 in the longitudinal direction of the electric wire 3. The distal end side crimping portion 37 is engaged with a portion 41 (see FIG. 4) located on the other end side of the covering body removing portion 13 in the longitudinal direction of the electric wire 3.

  According to the terminal-attached electric wire 1 using the terminal 5 shown in FIG. 5, the electric wire crimping portion 15 includes a crimping main body portion 33, a pair of proximal-side crimping portions 35, and a pair of distal-end-side crimping portions 37. Therefore, it becomes easy to adjust the degree of crimping of the electric wire 3 at the terminal 5. For example, the holding force of the electric wire 3 by the electric wire crimping portion 15 is increased at one end side of the electric wire 3, and the holding force of the electric wire 3 by the electric wire crimping portion 15 is weakened slightly away from one end of the electric wire 3 to the other end side. Can be done easily.

  Moreover, in the electric wire 1 with a terminal, you may change the form of the covering removal part 13 as shown in FIG. That is, you may comprise the covering body removal part 13 so that an opening area may become large as it leaves | separates from the core wire 7. FIG.

  If it demonstrates further, in the electric wire 3 shown in FIG. 6, the side wall part (wall part currently developed in the thickness direction of the coating | coated body 9) 21 in the coating | coated body removal part 13 is a slope surface. (See FIG. 8A.) As the distance from the core wire 7 increases, the opening area of the covering body removal portion 13 gradually increases.

  More specifically, the cross-sectional shape of the covering removing portion 13 by a predetermined plane including the central axis extending in the longitudinal direction of the core wire 7 is an isosceles trapezoid, and the upper base is a position on the core wire 7 side. The lower base (the lower base that is longer than the upper base) is located on the outer peripheral side of the covering 9.

  In addition, the said gradient surface is formed only in the side wall part (side wall part located in the both ends of the covering body removal part 13 in the longitudinal direction of the electric wire 3) 21 formed with the vertical peeling blade 29 shown in FIG. Yes. Therefore, the cross-sectional shape of the covering body removal part 13 by the plane orthogonal to the central axis extending in the longitudinal direction of the core wire 7 is semi-cylindrical (the cylinder is divided into two by a predetermined plane including the central axis. One of the three-dimensional shapes sometimes obtained).

  According to the terminal-attached electric wire 1 in which the electric wire 3 shown in FIG. 6 is used, the opening area of the covering removing portion 13 generated so that the core wire 7 is exposed at a part of one end portion in the longitudinal direction is the core wire 7. Since it becomes wide as it leaves | separates from, it is prevented that the contact area of the core wire 7 and the terminal 5 reduces. Thereby, it is prevented that electrical and mechanical performance falls.

  explain in detail. As shown in FIG. 8 (c), when the side wall portion 21 of the covering body 9 is orthogonal to the longitudinal direction of the core wire 7, even after the wire crimping portion 15 is crimped and the terminal 5 is installed on the wire 3, The side wall portion 21 of the covering body 9 remains orthogonal to the longitudinal direction of the core wire 7, and a non-contact portion 45 between the core wire 7 and the terminal 5 is formed over the dimension a1.

  Further, as shown in FIG. 8A, even if the side wall portion 21 of the covering 9 is a sloped surface inclined with respect to the longitudinal direction of the core wire 7, the wire crimping portion 15 is caulked to connect the wire 5 to the terminal 5. As shown in FIG. 8B, a non-contact portion 45 between the core wire 7 and the terminal 5 is formed over the dimension a2. However, when the wire crimping portion 15 is crimped, the covering 9 is appropriately crushed at the edge of the covering removing portion 13, so that the dimension a <b> 2 <the dimension a <b> 1, and the non-contact portion 45 between the core wire 7 and the terminal 5 is formed. It can be made smaller than before. And the length of the non-contact part 45 of the core wire 7 and the terminal 5 with respect to the length L of the exposed part of the core wire 7 formed by providing the covering body removal part 13 can be shortened. FIG. 8A shows a state before the wire crimping portion 15 of the terminal 5 is crimped. Moreover, the display of the adhesive agent 11 is abbreviate | omitted in FIG. 7, FIG.

  In addition, in the electric wire 1 with a terminal, you may delete impermeable members, such as the adhesive agent 11. FIG.

  That is, an electric wire from which a covering is removed so that a core wire is exposed at a part of one end portion in the longitudinal direction, and an electric wire crimping portion are crimped. A core wire exposed at a part of one end part is in contact with the wire crimping part and covered with the wire crimping part, and has a terminal holding one end part in the longitudinal direction of the electric wire, You may comprise so that the removal area of the said covering produced | generated so that the said core wire may be exposed in a part of one end part of a direction may become large in opening area as it leaves | separates from the said core wire.

  In this case, it is desirable that one end in the longitudinal direction of the electric wire 3 is sealed without using the adhesive 11 by crimping the electric wire crimping portion 15 as shown in FIG.

DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 3 Electric wire 5 Terminal 7 Core wire 9 Covering body 11 Water-impermeable member 13 Covered body removal part 15 Electric wire crimping part 33 Crimping body part 35 Base end side crimping part 37 Tip side crimping part

Claims (4)

One end surface in the longitudinal direction of the core wire is covered with a water-impermeable member, and the electric wire from which the covering body is removed so that the core wire is exposed at a part of one end portion in the longitudinal direction;
A wire crimping portion is provided, and the wire crimping portion is caulked so that a core wire exposed at a part of one end portion in the longitudinal direction of the wire comes into contact with the wire crimping portion and is covered with the wire crimping portion. And a terminal holding one end in the longitudinal direction of the electric wire,
An electric wire with a terminal characterized by having. In the electric wire with a terminal according to claim 1,
The electric wire crimping portion includes a crimping main body portion, a pair of proximal-end crimping portions, and a pair of distal-end crimping portions. In the electric wire with a terminal according to claim 1 or claim 2,
The terminal-attached electric wire characterized in that an opening area of the removal portion of the covering body generated so that the core wire is exposed at a part of one end portion in the longitudinal direction becomes wider as the distance from the core wire increases. An electric wire from which the covering is removed so that the core wire is exposed at a part of one end in the longitudinal direction;
A wire crimping portion is provided, and the wire crimping portion is crimped so that the core wire exposed at a part of one end portion in the longitudinal direction of the wire comes into contact with the wire crimping portion and is covered with the wire crimping portion. And a terminal holding one end in the longitudinal direction of the electric wire,
The removal portion of the covering body, which is generated so that the core wire is exposed at a part of one end portion in the longitudinal direction, has an opening area that increases as the distance from the core wire increases. With electric wire.

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