JP2015035259A - Electric wire with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire with a terminal which prevents water from intruding into the electric wire and can simplify a step for installing the terminal on the electric wire.SOLUTION: An electric wire 1 with for a terminal includes: an electric wire 3 in which a cover 9 is removed at one end in the longitudinal direction; a seal sheet 5 in which an opening 13 is formed, and one end of the electric wire is covered so that a part of a core wire 11 of the electric wire is exposed via the opening; and a terminal 7 which is equipped with an electric wire crimping part 15, and in which the core wire exposed via the opening of the seal sheet 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. 8B is known (for example, see Patent Document 1). As shown in FIG. 7, the terminal-attached electric wire 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. 8B, 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.8 (b) is required, there exists a problem that the process of installing the terminal 303 in the electric wire 311 is complicated.

  The present invention has been made in view of the above problems, and in an electric wire with a terminal that prevents the ingress of water into the electric wire, the electric wire with a terminal that can simplify the process of installing a terminal on the electric wire The purpose is to provide.

  According to the first aspect of the present invention, an electric wire from which the covering is removed at one end in the longitudinal direction and an opening are formed, and a part of the core wire of the electric wire is exposed through the opening. The wire is provided with a seal sheet covering one end of the electric wire and an electric wire crimping portion, and the electric wire crimping portion is caulked so that the core wire exposed through the opening of the seal sheet is the electric wire. It is the electric wire 1 with a terminal which has a terminal which contacts the crimping | compression-bonding part and is covered with the said electric wire crimping | crimping part, and holding the end part of the longitudinal direction of the said 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 the present invention, in the electric wire with a terminal which prevents the penetration of water into the electric wire, 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 state before providing a sealing sheet in an electric wire at the manufacturing process of the electric wire with a terminal which concerns on embodiment of this invention. It is a figure which shows the state which finished installing the sealing sheet to an electric wire in the manufacturing process of the electric wire with a terminal which concerns on embodiment of this invention, (b) is the perspective view which looked at the state of (a) from the other side. . It is a figure which shows the state before installing an electric wire in a terminal in the manufacturing process of the electric wire with a terminal concerning the embodiment of the present invention. It is a figure which shows the state just before installing an electric wire crimping part in the manufacturing process of the electric wire with a terminal which concerns on embodiment of this invention, and before crimping an electric wire crimping part. 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 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 to 5, the electric wire with terminal 1 according to the embodiment of the present invention includes an electric wire 3, a seal sheet (water-proof sheet) 5, and a terminal 7.

  As for the electric wire 3, the core wire (conductor part) 11 is exposed because the covering (insulator) 9 is removed at one end portion in the longitudinal direction.

  An opening 13 is formed in the seal sheet 5. And the site | part from which the sealing body 5 is installed in the one end part of the longitudinal direction of the electric wire 3, and the covering body 9 is removed so that a part of core wire 11 of the electric wire 3 may be exposed through the opening part 13 is used. Covering.

  The terminal 7 includes a plate-shaped electric wire crimping portion (electric wire crimping portion) 15. Then, by crimping the wire crimping portion 15, the core wire 11 exposed through the opening 13 of the seal sheet 5 comes into contact with the wire crimping portion 15 and is covered and sealed with the wire crimping portion 15. Moreover, the terminal 7 is holding the one end part of the longitudinal direction of the electric wire 3 because the electric wire crimping part 15 is crimped.

  The core wire 11 is formed by 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) with an insulating material such as an impermeable synthetic resin, and covers the core wire 11 from the vicinity of one end in the longitudinal direction of the core wire 11 to the other end of the core wire 11. ing. In other words, the length of the cylindrical cover 9 is slightly shorter than the length of the core wire 11, and the core wire 11 extends through the cylindrical cover 9. One end in the longitudinal direction of the covering body 9 is located slightly on the other end side in the longitudinal direction from one end in the longitudinal direction of the core wire 11, and the other end in the longitudinal direction of the core wire 11 and the other in the longitudinal direction of the covering body 9. The edges coincide with each other. Thereby, in the state before installing the seal sheet 5, the core wire 11 is exposed between one end in the longitudinal direction of the core wire 11 and one end in the longitudinal direction of the covering 9 (one end portion in the longitudinal direction of the electric wire 3). ing.

  In addition, in the site | part of the electric wire 3 in which the core wire 11 is not exposed, the outer periphery of the core wire 11 and the inner periphery of the covering 9 are in contact with each other. Further, the electric wire 3 is formed in an elongated cylindrical shape.

  In addition, when a process is performed such that a terminal is separately installed at the other end portion in the longitudinal direction of the electric wire 3, the covering body 9 is connected from the vicinity of one end in the longitudinal direction of the core wire 11 to the other end of the core wire 11. The core wire 11 is covered over the vicinity (the part of the other end where the said process is made).

  The electric wire (electric wire before installation of the seal sheet) 3 before the seal sheet 5 is installed is constituted by the core wire 11 and the covering body 9. The seal sheet 5 is provided later on the electric wire 3 before installation of the seal sheet. In the electric wire 3 before installation of the seal sheet, the core wire 11 is exposed at one end portion in the longitudinal direction as described above. And by providing the seal sheet 5 on the electric wire 3 before installation of the seal sheet, one end portion including one end surface in the longitudinal direction of the core wire 11 is covered with the seal sheet 5 except for the opening 13 of the seal sheet 5. .

  Further, since the seal sheet 5 is provided on the electric wire 3 before installation of the seal sheet, all the core wires 11 except the opening 13 of the seal sheet 5 and the other end surface in the longitudinal direction of the electric wire 3 are covered with the cover 9 and the seal sheet 5. And is covered and sealed.

  The seal sheet 5 before being installed on the electric wire 3 is formed in a predetermined shape (for example, a rectangular plate shape) using a water-impermeable material such as an insulating synthetic resin, and the opening 13 is also rectangular. The seal sheet 5 is penetrated in the thickness direction at the center of the seal sheet 5.

  As described above, the seal sheet 5 is provided on the electric wire 3 and covers the core wire 11 by being wound around one end portion in the longitudinal direction of the electric wire 3. More specifically, the seal sheet 5 is provided with an adhesive or adhesive layer on both sides or one side in the thickness direction, and one end of the core wire 11 (electric wire 3) in the longitudinal direction, and from one end to the other end. It is provided in the electric wire 3 over the space | interval (location of the other end side slightly rather than the one end of the longitudinal direction of the covering body 9) only the predetermined distance toward the direction. Thereby, in the longitudinal direction of the core wire 11, the length of the seal sheet 5 installed in the electric wire 3 is longer than the length of the core wire 11 exposed by removing the covering 9.

  Thus, in the state where the seal sheet 5 is installed on the electric wire 3, the seal sheets 5, the seal sheet 5 and the core wire 11, and the seal sheet 5 and the covering body are formed by a layer such as an adhesive provided on the seal sheet 5. 9, and the seal sheet 5 has a cylindrical bowl shape when the seal sheet 5 is not formed with the opening 13. The circular bottom portion 17 is in contact with one end surface in the longitudinal direction of the core wire 11 to cover one end surface of the core wire 11, and the cylindrical side plate portion 19 is connected to the one end portion in the longitudinal direction of the core wire 11 and the covering 9. Is covered with the outer periphery of the core wire 11 and the outer periphery of the covering body 9. In addition, the electric wire 3 and the seal sheet 5 are provided with flexibility (elasticity). Further, since the circular bottom portion 17 of the seal sheet 5 faces the seal sheet 5, a small protruding portion 21 is formed at the center in addition to the disk-shaped portion.

  In addition, the sealing sheet 5 itself may be provided with adhesiveness (adhesiveness) without using the above-described adhesive or adhesive.

  Here, the opening 13 of the seal sheet 5 when the seal sheet 5 is installed on the electric wire 3 will be described in detail. In the longitudinal direction of the electric wire 3 (core wire 11), the opening 13 of the seal sheet 5 exists over a predetermined length at the intermediate portion of the core wire 11 that is exposed by removing the covering 9, and the electric wire 3 ( In the circumferential direction of the core wire 11), the size is about 1/3 of the core wire 11. It is desirable that the size of the opening 13 of the seal sheet 5 be a minimum that can ensure the electrical and mechanical performance of the terminal-attached electric wire 1.

  The terminal 7 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 longer than the length of one end portion of the electric wire 3 and is approximately the same as the length of the seal sheet 5 installed on the electric wire 3. The value of the width of the plate-shaped electric wire crimping portion 15 at the portion where the seal sheet 5 is directly installed on the core wire 11 is slightly larger than the value of the outer circumference of the seal sheet 5 installed directly on the core wire 11. It has become. Further, the value of the width of the plate-shaped electric wire crimping portion 15 at the portion where the seal sheet 5 is directly installed on the cover body 9 is greater than the value of the outer circumference of the seal sheet 5 directly installed on the cover body 9. Is slightly larger.

  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 sealing sheet 5 is installed in the electric wire crimping portion 15 and the electric wire crimping portion 15 is caulked, whereby the electric wire crimping portion 15 becomes cylindrical, and the electric wire 3 in which the sealing sheet 5 is installed. One end of the wire is pressed and slightly deformed, and the wire crimping portion 15 wraps a predetermined amount with a pressing force, and the wire 3 is installed integrally with the terminal 7.

  In the state where the electric wire 3 is integrally installed on the terminal 7 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. The core wire (exposed core wire) 11 exposed through the opening 13 of the seal sheet 5 is positioned at the center of the wire crimping portion 15 in the width direction of the wire crimping portion 15 (circumferential direction of the wire 3). And is in contact with the wire crimping portion 15. Moreover, in the electric wire 1 with a terminal, the position of the one end part (site | part in which the seal sheet 5 is installed) of the longitudinal direction of the electric wire 3 and the position of the electric wire crimping part 15 correspond substantially mutually.

  Furthermore, in the electric wire 1 with a terminal, the site | part around the opening part 13 of the seal sheet 5 installed in the electric wire 3 is closely_contact | adhered to the electric wire crimping part 15 over the perimeter of the edge of the opening part 13. FIG. Accordingly, water or the like is prevented from entering the inside of the electric wire 3 (at the core wire 11) from the outside of the electric wire 3 through the opening 13 or the like.

  In the above description, one end of the opening 13 of the seal sheet 5 installed in the electric wire 3 is slightly separated from one end of the core wire 11 to the other end side in a direction from one end in the longitudinal direction of the electric wire 3 to the other end. However, one end of the opening 13 of the seal sheet 5 and one end of the core wire 11 may coincide with each other.

  Further, when the seal sheet 5 is installed on the electric wire 3 or when the electric wire 3 on which the seal sheet 5 is installed is installed on the terminal 7, the seal sheet 5 wound around the core wire 11 slightly extends and the opening of the seal sheet 5 is increased. Since it is assumed that the part 13 becomes large, it is desirable that the opening part 13 of the seal sheet 5 before being installed on the electric wire 3 is made smaller.

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

  First, as shown in FIG. 2, the electric wire 3 from which the covering body 9 is removed at one end in the longitudinal direction and the seal sheet 5 provided with the opening 13 are prepared.

  Subsequently, the seal sheet 5 is installed at one end of the electric wire 3 in the longitudinal direction. In this state, one end of the electric wire 3 in the longitudinal direction is sealed with the seal sheet 5. That is, if the opening 13 is absent, water or the like does not enter the inside of the electric wire 3 (the core wire 11) from the outside of the electric wire 3 at one end in the longitudinal direction of the electric wire 3. Yes.

  Then, the one end part of the longitudinal direction of the electric wire 3 in which the sealing sheet 5 was installed is located in the place of the electric wire crimping part 15 of the terminal 7, as shown in FIG.

  Then, the electric wire crimping part 15 is crimped, and the electric wire 1 with a terminal is produced | generated as shown in FIG.

  According to the terminal-attached electric wire 1, the seal sheet 5 covers one end of the electric wire 3 so that a part of the core wire 11 of the electric wire 3 is exposed through the opening 13, and the electric wire crimping portion 15 is crimped. As a result, the core wire 11 exposed through the opening 13 of the seal sheet 5 comes into contact with the wire crimping portion 15 and is covered with the wire crimping portion 15, thereby preventing water from entering the inside of the wire 3. Thus, corrosion of the core wire 11 can be prevented.

  Further, when the terminal 7 is installed on the electric wire 3, the conventional two-step caulking (the caulking shown in FIG. 8 (a) and the caulking shown in FIG. 8 (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 7 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, the core wire 11 at one end portion of the electric wire 3 without crimping the electric wire crimping portion of the terminal and wrapping one end in the longitudinal direction of the electric wire as in the conventional one shown in FIG. Is covered with the seal sheet 5, the core wire 11 can be reliably and easily sealed.

  Moreover, in the electric wire 1 with a terminal, since it is not necessary to crimp the electric wire crimp part of a terminal and wrap up the one end part of the electric wire in the longitudinal direction like the conventional thing shown in FIG.8 (b), the form of the electric wire crimp part 15 Can be as shown in FIG.

  That is, the wire crimping portion 15 includes a crimping main body portion (caulking main body portion) 25, a pair of proximal end side crimping portions (base end side crimping portions) 27, and a pair of distal end side crimping portions (front end side crimping portions) 29. It can be set as the structure provided with.

  In the electric wire crimping part 15 before crimping the electric wire 3, as shown in FIG. 6, the crimping | compression-bonding main-body part 25 is formed in the semi-cylindrical side surface shape. The base end side crimping portion 27 is formed in a flat plate shape and protrudes from a base end side portion (a portion on the box-like portion 23 side) of the wire crimping portion 15. The distal end side crimping portion 29 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 a state where the electric wire crimping portion 15 is crimped in FIG. 6, a portion 31 (see FIG. 3B) where the proximal end side crimping portion 27 is positioned on one end side of the opening 3 of the seal sheet in the longitudinal direction of the electric wire 3. ), And the distal end side crimping portion 29 is engaged with a portion 33 (see FIG. 3B) located on the other end side of the opening portion 13 of the seal sheet in the longitudinal direction of the electric wire 3. ing.

  According to the terminal-attached electric wire 1 using the terminal 7 shown in FIG. 6, the electric wire crimping portion 15 includes a crimping main body portion 25, a pair of proximal end crimping portions 27, and a pair of distal end side crimping portions 29. Therefore, it becomes easy to adjust the degree of crimping of the electric wire 3 at the terminal 7. 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.

  In addition, you may delete the inner part of the dashed-two dotted line L1 of Fig.2 (a), and you may make the opening part 13 of the seal sheet 5 into a "U" -shaped notch.

  In this case, when the dimension B1 of the seal sheet 5 is increased and the seal sheet 5 is installed at one end in the longitudinal direction of the electric wire 3, the part on the end side of the dimension B1 may overlap the part indicated by the dimension B2. desirable.

DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 3 Electric wire 5 Seal sheet 7 Terminal 9 Cover body 11 Core wire 13 Opening part 15 Electric wire crimping part 25 Crimping main-body part 27 Base end side crimping part 29 Tip side crimping part

Claims (2)

An electric wire from which the covering is removed at one end in the longitudinal direction;
An opening is formed, and a seal sheet covering one end of the electric wire so that a part of the core wire of the electric wire is exposed through the opening;
An electric wire crimping part is provided, and the electric wire crimping part is crimped so that the core wire exposed through the opening of the seal sheet comes into contact with the electric wire crimping part and is covered with the electric wire crimping part. And a terminal holding one end of the electric wire in the longitudinal direction;
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.

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