JP2017103101A - Adapter for crimp terminal, wire with crimp terminal, and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for crimp terminal in novel structure capable of crimping a plurality of kinds of coated wires of which the diameter dimensions are different, to a crimp terminal without increasing kinds of crimp terminals and further to also provide a wire with crimp terminal using such an adapter for crimp terminal, a manufacturing method thereof and the like.SOLUTION: The present invention relates to adapters 10a and 10b for crimp terminal to be used for a crimp terminal 16 comprising a wire barrel 30 that is crimped to a core wire 18 exposed in terminals of coated wires 14a and 14b and an insulation barrel 28 that is crimped to an insulation coating 20 of the coated wires 14a and 14b. The adapter for crimp terminal includes: a core wire size increase part 22 fixed around the core wire 18 to which the wire barrel 30 is crimped, for increasing a contour size of the core wire 18; and a coating size increase part 24 fixed around the insulation coating 20 to which the insulation barrel 28 is crimped, for increasing a contour size of the insulation coating 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a crimp terminal adapter, an electric wire with a crimp terminal using the same, and a method of manufacturing the same.

  2. Description of the Related Art Conventionally, electric wires with crimp terminals in which crimp terminals are attached to the ends of covered electric wires have been widely used in automobile electrical systems. The crimp terminal used in the electric wire with the crimp terminal is, for example, a wire barrel that is crimped to the core wire exposed at the end of the covered electric wire, as described in JP-A-2007-305356 (Patent Document 1), It has an insulation barrel that is crimped to the insulation coating of the covered wire, and the crimping terminal is fixed to the covered wire and conductively connected by crimping the wire barrel and the insulation barrel to the core wire and insulation coating of the covered wire. Has been realized.

  By the way, in order to ensure the connection reliability and the fixing strength required for the electric wire with crimp terminal, the wire barrel and the insulation barrel need to be respectively crimped to the core wire and the insulation coating of the covered electric wire with a sufficient contact area. . Therefore, the size of the wire barrel and insulation barrel of the crimp terminal must be optimized so that it can be crimped with a sufficient contact area with respect to the size of the core wire portion or insulation coating portion of the coated electric wire to be crimped. is there.

  However, when there are multiple types of coated wires with different diameters, the installation of a dedicated crimping terminal with the optimum barrel size for each type of coated wire leads to an increase in the number of types of terminals and complicates component management. It is not preferable. Furthermore, since a dedicated die is required for each crimp terminal, an increase in manufacturing cost cannot be avoided, and some countermeasure has been desired.

JP 2007-305356 A

  The present invention has been made in the background of the above-described circumstances, and the solution is to effectively crimp a plurality of types of covered electric wires having different diameters to the crimp terminals without causing an increase in the types of crimp terminals. An object of the present invention is to provide a crimp terminal adapter having a novel structure that can be used. Furthermore, this invention also aims at providing the electric wire with a crimp terminal using the adapter for this crimp terminal, and its manufacturing method.

  A first aspect of the present invention relating to a crimp terminal adapter is a crimp terminal including a wire barrel that is crimped to a core wire exposed at a terminal of a covered electric wire, and an insulation barrel that is crimped to an insulating coating of the covered electric wire. A crimp terminal adapter to be used, the core wire size increasing portion being fixed to the periphery of the core wire to which the wire barrel is crimped to increase the outer size of the core wire, and the insulation coating to which the insulation barrel is crimped And a coating size increasing portion that increases the outer size of the insulating coating.

  When the crimp terminal adapter of this aspect is used, the core wire size increasing portion and the covering size increasing portion of the crimp terminal adapter are reduced when the diameter dimension of the coated wire is smaller than the size of the wire barrel and the insulation barrel of the crimp terminal. By fixing to the core wire of the covered electric wire and the insulating coating portion, the outer size of the core wire of the covered electric wire and the insulating coating portion can be increased, and the coated electric wire can be crimped to the crimp terminals having different barrel sizes. It becomes possible. This eliminates the need to prepare multiple types of crimp terminals with different barrel sizes depending on the diameter of the coated wire to be crimped, and secures the crimp terminal adapter to the coated wire whose diameter is smaller than the barrel size. It is possible to crimp a plurality of types of covered electric wires having different diameters to a common crimp terminal simply by doing. As a result, the types of crimp terminals can be reduced, and the manufacturing cost can be reduced as compared with the case where a mold is prepared for each of a plurality of types of crimp terminals.

  The core wire size increasing portion and the covering size increasing portion are only required to be fixed around the core wire or the insulation coating. For example, in addition to the cylindrical shape, the mounting plate portion on which the core wire or the insulating coating is placed Arbitrary shapes such as a shape in which caulking pieces protrude from both ends in the width direction and a flat plate shape superimposed on the wire barrel and the insulation barrel of the crimp terminal can be adopted. In addition, the crimp terminal adapter may be made of metal, although at least the core wire size increasing portion has conductivity. Moreover, the core wire size increasing part and the covering size increasing part may be integrated, or may be provided separately. Furthermore, the core wire size increasing portion and the covering size increasing portion may be fixed to the core wire and the insulating coating of the covered electric wire by pressure bonding, or may be fixed by welding, welding or adhesion. In addition, the crimp terminal adapter may be fixed to the covered wire in advance before crimping the crimp terminal and the covered wire, or may be fixed to the covered wire simultaneously with the crimping of the crimp terminal and the covered wire.

  A second aspect of the present invention relating to a crimp terminal adapter is the crimp terminal adapter according to the first aspect, wherein the core wire size increasing portion and the covering size increasing portion are disposed between them. The connecting portion has a length dimension in which the core wire size increasing portion and the covering size increasing portion are positioned at positions corresponding to the wire barrel and the insulation barrel of the crimp terminal. It is what you have.

  According to this aspect, since the core wire size increasing portion and the covering size increasing portion are integrated via the connecting portion disposed between them, handling becomes easy and workability can be improved. it can. In particular, the length dimension of the connecting portion is set so that the core wire size increasing portion and the covering size increasing portion are positioned at positions corresponding to the wire barrel and the insulation barrel of the crimping terminal. The positioning operation of the crimp terminal adapter is facilitated, and the workability can be further improved.

  The first aspect of the present invention relating to the electric wire with crimp terminal is that the wire barrel of the crimp terminal is crimped to the core wire exposed at the end of the coated electric wire, while the insulation barrel of the crimp terminal is the insulation coating of the coated electric wire. In the electric wire with a crimp terminal crimped to the crimp terminal, the crimp terminal adapter according to the first or second aspect is provided, and the wire barrel is disposed through the core wire size increasing portion of the crimp terminal adapter. While being crimped | bonded to the core wire, the said insulation barrel is crimped | bonded to the said insulation coating through the said coating size increase part.

  According to the electric wire with a crimp terminal of this aspect, since the adapter for the crimp terminal of the present invention is fixed to the coated electric wire, the core wire size of the adapter for the crimp terminal is small even if the diameter of the coated electric wire is small with respect to the barrel size. The wire barrel and the insulation barrel of the crimp terminal can be appropriately crimped to the core wire and the insulation coating of the coated electric wire via the increase portion and the cover size increase portion. Therefore, it is possible to crimp multiple types of coated wires with different diameters to a common crimp terminal, which advantageously eliminates the conventional problems that require multiple types of crimp terminals corresponding to different diameters of coated wires. Thus, the manufacturing cost can be reduced.

  The first aspect of the present invention relating to the method of manufacturing a wire with a crimp terminal is that the wire barrel of the crimp terminal is crimped to the core wire exposed at the end of the coated wire, while the insulation barrel of the crimp terminal is the coated wire. In the method of manufacturing an electric wire with a crimp terminal that is crimped to an insulating coating, a crimp terminal that includes the wire barrel and the insulation barrel and prepares a common crimp terminal that can be crimped to a plurality of types of coated wires having different diameters When the preparation step, the adapter preparation step of preparing the crimp terminal adapter according to claim 1 or 2, and the diameter dimension of the covered electric wire is smaller than the size of the wire barrel and the insulation barrel, The core wire size increasing portion and the covering size increasing portion of the crimp terminal adapter are fixed to the core wire and the insulating coating of the covered electric wire. An adapter fixing step, and the covered electric wire with the crimp terminal adapter attached thereto is assembled to the crimp terminal, and the wire barrel is crimped to the core wire via the core wire size increasing portion of the crimp terminal adapter. And a crimping step of crimping the insulation barrel to the insulating coating through the coating size increasing portion.

  According to the method of manufacturing a wire with a crimp terminal according to this aspect, a common crimp terminal is prepared for a plurality of types of covered wires having different diameters. By assembling to the covered electric wire, the wire barrel and the insulation barrel of the crimp terminal can be appropriately crimped to the core wire and the insulating coating of the covered electric wire via the core wire size increasing portion and the covering size increasing portion of the crimp terminal adapter. Therefore, it is possible to crimp multiple types of coated wires with different diameters to a common crimp terminal, which advantageously eliminates the conventional problems that require multiple types of crimp terminals corresponding to different diameters of coated wires. Thus, the manufacturing cost can be reduced.

  It should be noted that depending on the specific form of the crimp terminal adapter, any case where the adapter fixing process is performed before the crimping process or simultaneously with the crimping process can be included in the present invention.

  According to a second aspect of the present invention relating to a method of manufacturing a wire with a crimp terminal, in the method of manufacturing a wire with a crimp terminal according to the first aspect, the core wire size increasing portion and the covering size are used as the adapter for the crimp terminal. A plurality of types of crimp terminal adapters having different plate thickness dimensions of the increased portion are prepared, and the diameter dimension of the covered wire, the wire barrel, and the insulation barrel are selected from the plurality of types of crimp terminal adapters. The method further includes a selection step of selecting the crimp terminal adapter having a plate thickness dimension corresponding to the difference in size.

  According to this aspect, since a plurality of types of adapters for crimp terminals having different plate thickness dimensions of the core wire size increasing portion and the covering size increasing portion are prepared, the coatings with different diameter dimensions that can be attached to a common crimp terminal. The types of electric wires are further increased, and the versatility of the crimp terminal can be further increased and the manufacturing cost can be further reduced.

  Then, according to the difference between the diameter dimension of the covered wire and the size of the wire barrel and the insulation barrel, for example, if the difference is large, select a crimp terminal adapter with a large plate thickness dimension, and if the difference is small, By selecting a small crimp terminal adapter, the crimp terminal wire barrel and insulation barrel can be properly crimped to the core wire and insulation coating of the covered wire via the core wire size increase portion and the cover size increase portion. It can be done.

  According to the present invention, when the diameter dimension of the covered wire is small with respect to the size of the wire barrel and the insulation barrel of the crimp terminal, the core wire size increasing portion and the cover size increasing portion of the crimp terminal adapter are insulated from the core wire of the covered wire. By adhering to the covering portion, the outer sizes of the core wire and the insulating covering portion of the covered electric wire can be increased, and the covered electric wire can be crimped to the crimp terminals having different barrel sizes. Therefore, there is no need to prepare multiple types of crimp terminals with different barrel sizes according to the diameter of the coated wire to be crimped, and the crimp terminal adapter is fixed to the coated wire with a smaller diameter than the barrel size. By simply doing, a plurality of types of covered electric wires having different diameters can be crimped to a common crimp terminal. As a result, the types of crimp terminals can be reduced, and the manufacturing cost can be reduced as compared with the case where a mold is prepared for each of a plurality of types of crimp terminals.

The top view which shows the manufacturing method of the electric wire with a crimp terminal provided with the adapter for crimp terminals as 1st embodiment of this invention. The side view of the electric wire with a crimp terminal shown in FIG. III-III cross-sectional enlarged view in FIG. The IV-IV cross-sectional enlarged view in FIG. The side view which shows the manufacturing method of the electric wire with a crimp terminal provided with another adapter for crimp terminals as this embodiment. The VI-VI cross-sectional enlarged view in FIG. VII-VII cross-sectional enlarged view in FIG. The top view which shows the manufacturing method of the electric wire with a crimp terminal of the conventional structure which is not provided with the adapter for crimp terminals. The side view of the electric wire with a crimp terminal shown in FIG. XX cross-sectional enlarged view in FIG. XI-XI cross-sectional enlarged view in FIG. The top view which shows the manufacturing method of the electric wire with a crimp terminal provided with the adapter for crimp terminals as 2nd embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the electric wire 12a with a crimping terminal provided with the adapter 10a for crimping terminals as 1st embodiment of this invention is shown by FIGS. As shown in FIGS. 1 and 2, the crimped terminal-attached electric wire 12 a includes a covered electric wire 14 a, a crimped terminal adapter 10 a attached to the end of the covered electric wire 14 a, and a covered electric wire to which the crimped terminal adapter 10 a is attached. And a crimp terminal 16 attached to the terminal 14a. Here, the covered electric wire 14a has a structure in which a core wire 18 obtained by bundling a plurality of metal wires such as copper, aluminum or the like, which is a conductor, is covered with an insulating coating 20 having an electrical insulating property such as an ethylene resin or a styrene resin It is said that. In order to facilitate understanding, the covered electric wire 14a and the crimp terminal 16 are shown in FIG. 1 and the connection portion 32 of the crimp terminal 16 is shown in phantom lines in FIGS. Further, in the following description, “upper” means the upper side in FIG. 2, “lower” means the lower side in FIG. 2, “front” means the left side in FIG. 1, and “rear” means the right side in FIG. Shall.

  The crimp terminal adapter 10a is a flat plate member that is substantially H-shaped (see FIG. 1A) in plan view, and is crimped around the core wire 18 exposed at the end of the covered wire 14a. A substantially rectangular core wire size increasing portion 22 that increases the outer shape size of 18, and a substantially rectangular covering size increasing portion that is crimped around the insulating coating 20 at the end of the covered wire 14 a to increase the outer size of the insulating coating 20. 24. The core wire size increasing portion 22 and the covering size increasing portion 24 are integrated via a connecting portion 26 disposed between them. Further, the connecting portion 26 has such a length dimension that the core wire size increasing portion 22 and the covering size increasing portion 24 are positioned at positions corresponding to the wire barrel 30 and the insulation barrel 28 of the crimp terminal 16 described later (FIG. 1). , 2 in the left-right direction). The crimp terminal adapter 10a is integrally formed using various metal materials that are conductive and can be pressed or punched, such as brass, copper, copper alloy, aluminum, aluminum alloy, and the like. ing.

  On the other hand, the crimp terminal 16 extends from the insulation barrel 28 to the crimp size increasing portion 24 with respect to the crimp terminal adapter 10a attached to the end of the coated wire 14a, and the core wire size extends from the insulation barrel 28. A wire barrel 30 that is crimped to the increasing portion 22, and a substantially cylindrical connecting portion 32 that extends from the core size increasing portion 22 and is connected to a mating terminal (not shown) so as to be conductive and open forward. It is comprised including. The crimp terminal 16 is also integrally formed using various metal materials that are conductive and can be pressed or punched, such as brass, copper, copper alloy, aluminum, aluminum alloy, or the like. .

  Next, FIGS. 5 to 7 show a crimp terminal adapter 10b having a different size with a plate thickness dimension larger than that of the crimp terminal adapter 10a. The crimped terminal-equipped electric wire 12b including the crimp terminal adapter 10b has a diameter (r) (see FIG. 5) of the covered wire 14b smaller than a diameter (R <see FIG. 2) of the covered wire 14a (r < On the other hand, the plate thickness dimension of the crimp terminal adapter 10b: T (see FIG. 5) is thicker than the plate thickness dimension of the crimp terminal adapter 10a: t (see FIG. 2) (T> t). Has been. That is, the size of the core wire to which the wire barrel 30 is attached is increased by attaching the crimp terminal adapter 10b having a plate thickness larger than that of the crimp terminal adapter 10a to the end of the coated electric wire 14b having a smaller diameter than the coated electric wire 14a. The outer size (W2 × H2, see FIG. 6) of the portion 22 is approximately the same as the outer size (W1 × H1, see FIG. 3) of the core wire size increasing portion 22 of the crimp terminal adapter 10a to which the wire barrel 30 is attached. On the other hand, the outer size (Wb × Hb, see FIG. 7) of the covering size increasing portion 24 to which the insulation barrel 28 is attached is the same as the covering size increasing portion 24 of the crimp terminal adapter 10a to which the insulation barrel 28 is attached. It is approximately the same as the outer size (Wa × Ha, see FIG. 4). The diameter dimension R of the covered electric wire 14a and the diameter dimension r of the covered electric wire 14b are not connected to the wire barrel 30 or the insulation barrel 28 of the crimp terminal 16 common to the present embodiment via the crimp terminal adapters 10a and 10b. The diameter (R, r <RR) of the covered wire 102 of the wire 100 with a crimp terminal directly attached to the wire is smaller than RR (see FIG. 9). In addition, in order to make an understanding easy, the connection part 32 of the crimp terminal 16 is shown by the virtual line in FIGS. 6-7, and the covered electric wire 102 and the crimp terminal 16 are shown in FIG.

  By the way, the electric wire 12a, 12b with a crimp terminal having such a structure can be manufactured by the following method. First, an adapter preparation process is performed in which two types of crimp terminal adapters 10a and 10b having different plate thickness dimensions are prepared by press punching a metal flat plate. Subsequently, a crimp terminal preparation step for preparing one type of crimp terminal 16 commonly used for the two crimp terminal adapters 10a and 10b is performed by press punching a metal flat plate. Next, from two types of crimp terminal adapters 10a and 10b having different plate thickness dimensions, the diameter dimensions R and r of the covered electric wires 14a and 14b, and the wire barrel 30 and the insulation barrel 28 of the crimp terminal 16 are directly provided. Diameter dimensions of the covered electric wire 102 to be attached: The crimp terminal adapters 10a and 10b having plate thickness dimensions corresponding to the difference from RR are selected. For example, when the diameter dimension R of the covered wire 14a is relatively large and the difference from the diameter dimension RR of the covered wire 102 is small, the crimp terminal adapter 10a having a relatively thin plate thickness dimension t is selected. On the other hand, when the diameter dimension r of the covered electric wire 14b is smaller than the diameter of the covered electric wire 14a and the difference between the diameter dimension RR of the covered electric wire 102 and RR is large, the crimp terminal having a plate thickness dimension T that is thicker than the adapter 10a for the crimp terminal. Adapter 10b is selected. As a result, a selection process for selecting the crimp terminal adapters 10a and 10b is executed. Then, the core wire size increasing portion 22 and the covering size increasing portion 24 of the selected crimp terminal adapter 10a, for example, are fixed to the core wire 18 and the insulating coating 20 exposed at the end of the covered wire 14a, thereby fixing the adapter. The process is executed. Finally, the crimping process is executed by assembling the covered electric wire 14a to which the crimp terminal adapter 10a is attached to the crimp terminal 16. More specifically, the wire barrel 30 of the crimp terminal 16 is crimped to the core wire 18 via the core wire size increasing portion 22 of the crimp terminal adapter 10a, while the insulation barrel 28 of the crimp terminal 16 is crimped to the crimp terminal adapter 10a. It is crimped to the insulating coating 20 via the coating size increasing portion 24. As a result, the crimp terminal-equipped electric wire 12a provided with the crimp terminal adapter 10a according to the present embodiment is completed.

  According to the crimp terminal adapters 10a and 10b having such a structure, the covered electric wire 102 can be directly attached to the wire barrel 30 or the insulation barrel 28 of the common crimp terminal 16 without using the crimp terminal adapters 10a and 10b. Diameter dimension: RR (see FIG. 9) smaller diameter dimensions: R, r covered electric wires 14a, 14b are crimped to the wire barrel 30 or insulation barrel 28 of the crimp terminal 16 in advance. , 10b are attached to the ends of the covered wires 14a, 14b, so that the covered wires 14a, 14b having a small diameter can be crimped to the common crimp terminal 16. More specifically, by attaching the crimp terminal adapters 10a and 10b to the ends of the covered electric wires 14a and 14b in advance, the outer size of the core wire size increasing portion 22 of the crimp terminal adapters 10a and 10b to which the wire barrel 30 is attached. : W1 × H1 and W2 × H2 are approximately the same as the outer size of the core wire 18 of the covered electric wire 102 to which the wire barrel 30 of the covered electric wire 102 is attached: W3 × H3. Similarly, the coated wire to which the insulation barrel 28 of the coated wire 102 is attached is also applied to the outer size: Wa × Ha, Wb × Hb of the crimped size adapter 24 a of the crimp terminal adapters 10 a and 10 b to which the insulation barrel 28 is attached. The outer size of 102 is approximately the same as Wc × Hc. This eliminates the need to prepare a plurality of types of crimp terminals having different barrel sizes in accordance with the diameters of the coated wires 14a, 14b, 100 to be crimped, and to the coated wires 14a, 14b having a smaller diameter than the barrel size. On the other hand, a plurality of types of covered electric wires 14a and 14b having different diameters can be crimped to the common crimp terminal 16 simply by fixing the crimp terminal adapters 10a and 10b. In this way, the types of crimp terminals can be reduced, and since it is not necessary to prepare a mold for each of a plurality of types of crimp terminals, the manufacturing cost can be reduced.

  Further, since the core wire size increasing portion 22 and the covering size increasing portion 24 are integrated through the connecting portion 26 disposed between them, the handling is easy and the workability can be improved. It can be done. Moreover, the connecting portion 26 is configured to have such a length dimension that the core wire size increasing portion 22 and the covering size increasing portion 24 are positioned at positions corresponding to the wire barrel 30 and the insulation barrel 28 of the crimp terminal 16. ing. Therefore, the positioning operation of the crimp terminal adapters 10a and 10b with respect to the crimp terminal 16 can be easily performed, and the workability can be further improved. In addition, for the purpose of increasing the crimping area or the like, irregularities or depressions (not shown) may be appropriately provided on the inner surfaces of the crimp terminal adapters 10a and 10b.

  Next, with reference to FIG. 12, the crimp terminal-equipped electric wire 40 provided with the crimp terminal adapter 34 according to the second embodiment of the present invention will be described in detail. About a site | part, the detailed description is abbreviate | omitted by attaching | subjecting the code | symbol same as the said embodiment in the figure. The crimp terminal adapter 34 is different from the above-described embodiment in that the core wire size increasing portion 36 and the covering size increasing portion 38 are not integrated with each other via the connecting portion 26 disposed therebetween. An embodiment is shown. In the present embodiment, the core wire size increasing portion 36 of the crimp terminal adapter 34 has a rectangular shape that is slightly smaller than the wire barrel 30 of the crimp terminal 16 in plan view, and is in advance with respect to the surface of the wire barrel 30. It is welded. Further, the covering size increasing portion 38 of the crimp terminal adapter 34 has a rectangular shape that is slightly smaller than the insulation barrel 28 of the crimp terminal 16 in a plan view, and is previously welded to the surface of the insulation barrel 28. ing. Then, by crimping the wire barrel 30 and the insulation barrel 28 of the crimp terminal 16 to the core wire 18 and the insulation coating 20 of the coated wire 14a, the core wire size increasing portion 36 and the coating size increasing portion 38 of the crimp terminal adapter 34 are simultaneously provided. It is adapted to be crimped to the core wire 18 and the insulation coating 20. Thereby, the electric wire 40 with a crimp terminal provided with the adapter 34 for crimp terminals is completed. In such an electric wire 40 with a crimp terminal, the outer size of the core wire size increasing portion 36 of the crimp terminal adapter 34 can be approximately the same as that of the covered electric wire 102, and the outer size of the cover size increasing portion 38 of the crimp terminal adapter 34 can be reduced. It is possible to have the same degree as the covered electric wire 102 to which the insulation barrel 28 of 102 is attached. Therefore, it is not necessary to prepare a plurality of types of crimp terminals having different barrel sizes in accordance with the diameter of the coated wire 14a to be crimped, and a crimp terminal adapter for the coated wire 14a having a smaller diameter than the barrel size. A plurality of types of covered electric wires 14 a having different diameters can be crimped to the common crimp terminal 16 simply by fixing 34. In addition, the crimp terminal adapter 34 of the present embodiment is formed by separately forming the core wire size increasing portion 22 and the covering size increasing portion 24, so that, for example, it is formed by effectively using a cut edge during press punching. It is also possible to do.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the above embodiment, the core wire size increasing portion 22 and the covering size increasing portion 24 are pressure-bonded around the core wire 18 and the insulation coating 20, but the core wire size increasing portions 22, 36 and the covering size increasing portions 24, 38 are replaced. You may make it form in a cylinder shape, extrapolate the circumference | surroundings of the core wire 18 or the insulation coating 20, and may adhere to the core wire 18 or the insulation coating 20 by arbitrary well-known fixing means, such as welding, welding, and adhesion | attachment. The core wire size increasing portion 22 is not limited to being made of conductive metal, but may be conductive, whereas the covering size increasing portion 24 is not limited to being made of conductive metal, such as a synthetic resin. Any material can be used. Further, in the second embodiment, the crimp terminal adapter 34 is fixed to the barrels 28 and 30 of the crimp terminal 16 in advance. However, before the crimp terminal 16 is crimped to the coated electric wire 14a, the terminal of the coated electric wire 14a is previously formed. You may attach to. In addition, in the said embodiment, although the opening cylindrical female terminal was illustrated and demonstrated as the connection part 32, the male terminal which has the part inserted and contacted in a cylindrical female terminal at the front-end | tip, Any known terminal including a terminal having a bolt insertion hole at the center of a connection portion used for the terminal or the like is applicable.

  In the above embodiment, two types of crimp terminal adapters 10a and 10b having different plate thickness dimensions are used. However, three or more types of crimp terminal adapters may be used. Furthermore, even when a single type of crimp terminal adapter 10a is used, two types, a covered electric wire 102 having a diameter corresponding to the barrel size and a covered electric wire 14a having a diameter smaller than the barrel size, are used. It can crimp to the common crimp terminal 16, and can enjoy the effect of this invention similarly.

10a, 10b, 34: Adapter for crimp terminal, 12a, 12b, 36, 100: Electric wire with crimp terminal, 14a, 14b, 102: Covered wire, 16: Crimp terminal, 18: Core wire, 20: Insulation coating, 22, 36 : Core wire size increasing portion, 24, 38: covering size increasing portion, 26: connecting portion, 28: insulation barrel, 30: wire barrel

Claims (5)

A crimp terminal adapter used for a crimp terminal including a wire barrel that is crimped to a core wire exposed at a terminal of a covered electric wire, and an insulation barrel that is crimped to an insulating coating of the covered electric wire,
A core wire size increasing portion that is fixed to the periphery of the core wire to which the wire barrel is crimped to increase the outer size of the core wire;
A crimping terminal adapter, comprising: a covering size increasing portion that is fixed to a periphery of the insulating coating to which the insulation barrel is crimped to increase an outer size of the insulating coating.   The core wire size increasing portion and the covering size increasing portion are integrated via a connecting portion disposed therebetween, and the connecting portion is connected to the core wire size increasing portion and the covering size increasing portion by the pressure bonding. The crimp terminal adapter according to claim 1, having a length dimension positioned at a position corresponding to the wire barrel and the insulation barrel of the terminal. In the wire with the crimp terminal, the wire barrel of the crimp terminal is crimped to the core wire exposed at the end of the coated wire, while the insulation barrel of the crimp terminal is crimped to the insulation coating of the coated wire,
A crimp terminal adapter according to claim 1 or 2 is provided,
The wire barrel is crimped to the core wire via the core wire size increasing portion of the crimp terminal adapter, while the insulation barrel is crimped to the insulating coating via the coating size increasing portion. Characteristic wire with crimp terminal. In the manufacturing method of the electric wire with the crimp terminal, the wire barrel of the crimp terminal is crimped to the core wire exposed at the end of the coated electric wire, while the insulation barrel of the crimp terminal is crimped to the insulating coating of the coated electric wire.
A crimp terminal preparation step that includes the wire barrel and the insulation barrel, and prepares a common crimp terminal that can be crimped to a plurality of types of covered electric wires having different diameters.
An adapter preparation step for preparing the crimp terminal adapter according to claim 1 or 2,
When the diameter dimension of the covered electric wire is smaller than the size of the wire barrel and the insulation barrel, the core wire size increasing portion and the covering size increasing portion of the crimp terminal adapter are replaced with the core wire of the covered electric wire. And an adapter fixing step for fixing to the insulating coating,
The coated electric wire with the crimp terminal adapter attached thereto is assembled to the crimp terminal, and the wire barrel is crimped to the core wire via the core wire size increasing portion of the crimp terminal adapter, and the covering size increasing portion A crimping step of crimping the insulation barrel to the insulating coating via
The manufacturing method of the electric wire with a crimp terminal characterized by including.   As the crimping terminal adapter, a plurality of types of crimping terminal adapters having different plate thickness dimensions of the core wire size increasing portion and the covering size increasing portion are prepared. 5. The method according to claim 4, further comprising a selection step of selecting the crimp terminal adapter having a plate thickness according to a difference between a diameter of the covered electric wire and a size of the wire barrel and the insulation barrel. Manufacturing method of electric wire with crimp terminal.

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