JP5290831B2 - Crimping terminal and its winding state inspection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crimp terminal capable of easily confirming, from outside, the quality of an entrainment state of a crimp piece after crimping, without destroying it in the crimp state, and to provide an entrainment state inspection method for inspecting an entrainment state of the crimp terminal, wherein efficiency of its crimping process is improved. <P>SOLUTION: A wire barrel part 10 for crimping core wires 102 of a coated wire 100 is made constituted of a barrel bottom part 11 mounting the core wire 102, and wire barrel pieces 12 extended from both ends of the barrel bottom part 11 in a width direction W, and entraining and crimping the core wires 102 mounted on the barrel bottom part 11 from both external ends in a width direction W. Entrainment state checking parts 20 capable of checking an entrainment state of the wire barrel pieces 12 entraining and crimping the core wires 102 are provided at least at an outside face of each wire barrel piece 12, and the entrainment state checking parts 20 are formed in the same shape and arranged at symmetrical positions, and are made opposed to each other at a crimping center line CL in the crimping state. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to, for example, a crimp terminal that winds and crimps a conductor portion of a covered electric wire with a crimping piece, and a winding state inspection method for inspecting the winding state.

Conventionally, as a terminal fitting to be attached to the tip of a covered electric wire, a crimp terminal provided with a crimping portion for crimping a conductor part with a sheath removed has been often used.
When the conductor portion is crimped with such a crimp terminal, if the winding of the left and right barrels (crimp pieces) is biased, the electrical reliability may be reduced.

  In the past, in order to inspect the unwinding of the barrel (crimp piece), it was necessary to check the cross section by cutting the crimped portion in the crimped state where the conductor portion was crimped in the cross-sectional direction. In the case of such an inspection method, it takes time and labor to cut the cross section of the crimping part, and furthermore, since it is a destructive inspection, it was not possible to inspect all products to be shipped.

Therefore, a determination method has been proposed that can stably determine whether the terminal is crimped in a short time (see Patent Document 1).
This inspection method divides and compares the reference waveform generated by the load value when crimped well and the characteristic waveform generated by the load value at the time of crimping of the crimp terminal to be discriminated. It is the inspection method which discriminate | determines the quality of the crimping state of.

  If this inspection method is used, since it is a non-destructive inspection, all products to be shipped can be inspected. However, since the quality of the crimped state is determined based on the load at the time of crimping, the difference in load cannot be detected unless the crimped state is extremely bad, and high-precision inspection cannot be performed.

  Further, in the inspection based on the load value at the time of crimping, there is a problem that it is not possible to determine whether it is due to an uneven winding state or due to other factors, and a large-scale device is required.

JP 2002-352931 A

  According to the present invention, a crimping terminal that can easily confirm whether the crimped piece is wound up after crimping without destroying the crimped terminal in the crimped state, and a winding for inspecting the winding state of the crimped terminal. It aims at providing a state inspection method and improving the efficiency of the crimping process of a crimp terminal.

The present invention provides a crimping portion for crimping a conductor portion of a covered electric wire, a crimping bottom surface for placing the conductor portion, and a width of the conductor portion placed on the crimping bottom surface, extending from both sides in the width direction of the crimping bottom surface. A crimping terminal comprising a crimping piece having tapered bell mouths formed at both ends in the longitudinal direction in a crimped state, and being crimped by winding from both sides in the direction, and crimping by winding the conductor portion A winding state confirmation means capable of confirming the winding state of the piece from the outside is separately provided on each of the distal end side and the proximal end side of the conductor portion to be crimped in the longitudinal direction of each crimping piece, and the bell The winding state confirmation means provided at least on the outer surface so as to straddle the mouse and provided in each crimping piece is formed in the same shape or a symmetrical shape, arranged in a symmetrical position, and the winding state In the configuration in which the width direction center portion is opposed to each other, and the winding state confirmation means on at least the base end side of the distal end side and the base end side in the longitudinal direction of the crimping piece has the outer surface recessed. The winding state confirmation means comprising a concave portion and provided on the distal end side in the longitudinal direction of the crimping piece, and the winding state confirmation means provided on the proximal end side in the longitudinal direction of the crimping piece, It is characterized by being formed in the same shape and arranged at a symmetrical position with respect to an intermediate position in the longitudinal direction of the crimping piece .

As an aspect of the present invention, the winding state confirmation unit on the distal end side in the longitudinal direction of the crimping piece can be constituted by a penetration confirmation unit that penetrates the crimping piece .

As an aspect of the present invention, the winding state confirmation means on the distal end side in the longitudinal direction of the crimping piece can be constituted by a concave portion having the outer surface recessed .

Further, the invention includes a crimp bottom for placing the conductors portion of the covered electric wire, extend from both sides in the width direction of the piezoelectric adhesive bottom surface, involving the both widthwise outer side of the conductor portion which is placed on the crimping bottom crimping constituted by the crimping pieces crimp the in the longitudinal direction of the both crimping pieces in the crimping portion for crimping the conductor portions, in each of the distal side and the proximal end side of the conductor portion for crimping, involving a pre-Symbol conductor portions said winding state of the crimping pieces crimp the conductor portion of the covered wire with crimped terminals provided in at least the outer surface separately identifiable entrainment state confirmation means from outside, the longitudinal direction of the crimping pieces of the crimping state Tapered bell mouths are formed at both ends, and the winding state confirmation means provided in each crimping piece is formed in the same shape or a symmetrical shape, and is arranged so as to straddle the bell mouth at a symmetrical position. The winding state confirmation means at least at the base end side of the distal end side and the base end side in the longitudinal direction of the crimping piece, The winding state confirmation means, which is constituted by a concave portion having a concave outer surface, provided on the distal end side in the longitudinal direction of the crimping piece, and the winding provided on the proximal end side in the longitudinal direction of the crimping piece. The state confirmation means is formed in the same shape and is disposed at a position symmetrical to the intermediate position in the longitudinal direction of the crimping piece, and detects the state of the winding state confirmation means formed on the outer surface of both the crimping pieces. And a method for inspecting the state of the crimp terminal in which the conductor portion is inspected by the crimp piece.

  The said crimping | compression-bonding part is a wire barrel of the open barrel type | formula of a back view substantially U shape provided with the crimping | compression-bonding bottom face and the crimping piece called what is called a barrel piece arrange | positioned at the width direction both sides of a crimping | compression-bonding bottom face. Say.

  The crimp terminal includes a connection terminal including the crimp part and a terminal connection part such as a terminal box, a male tab, or a screw insertion hole, or a connection terminal constituted by only the crimp part.

  The covered electric wire is a covered electric wire in which a conductor portion in which a plurality of wires are made of pure copper, copper alloy, aluminum, or aluminum alloy is covered with an insulating covering, for example, a wire made of annealed copper wire A very thin covered electric wire having a conductor portion formed.

  The width direction is, for example, a direction orthogonal to the longitudinal direction of the terminal connection portion and the crimp portion in the case of a connection terminal constituted by a terminal connection portion and a crimp portion, in other words, a cover that is crimp-connected to the crimp portion. It is a direction orthogonal to the longitudinal direction of the electric wire.

The confirmation from the outside means that confirmation can be made by visual confirmation or analysis such as image analysis.
The winding state confirmation means that can be confirmed from the outside is formed on both crimping pieces to be wound and crimped from both sides in the width direction, a through part that penetrates the crimping piece, a notch part in which the crimping piece is notched, A concave part with a concave part of the outer surface, a filling body in which the penetrating part or concave part is filled with another member, a display body displayed with a pattern engraved on the surface by coloring or laser marking, etc., a part of the outer surface It can be set as the convex part etc. which were made convex.

  The winding state confirmation means provided on at least the outer surface of each crimping piece is arranged in the same shape provided in each crimping piece, a symmetrical shape with the center in the width direction as a symmetry axis, or a symmetrical position with the center in the width direction as a symmetry axis Further, the confirmation means may be a confirmation means arranged in an asymmetric shape or an asymmetric position. Moreover, it can also be set as the confirmation means arrange | positioned in any position of the said longitudinal direction in a crimping | compression-bonding piece.

The winding state confirmation means formed in the above-mentioned symmetrical shape means a line-symmetrical shape with the center line in the width direction of the crimping part as the central axis.
The winding state confirmation means arranged at the symmetric position can be a line symmetric arrangement with the center line in the width direction of the crimping part as a central axis, or a point symmetric arrangement with the center point of the crimping part as the center. .

The central portion in the width direction in the rolled state means a linear portion in the longitudinal direction formed by the outer surfaces of the wound crimping pieces facing each other.
Opposing at the center portion in the width direction means that the outer surfaces of the wound crimping pieces are opposed to each other with the linear portion in the longitudinal direction facing each other as the center.

  The tip end side of the conductor part to be crimped is composed of, for example, a terminal connection portion and a crimp portion, and a crimp portion in the case of a crimp terminal that is crimped and connected by placing a covered electric wire on the side opposite to the terminal connection portion of the crimp portion. It means that it is the terminal connection part side.

Further, the base end side of the conductor part to be crimped is composed of, for example, a terminal connection part and a crimping part, and in the case of a crimping terminal to be crimped and connected by placing a covered electric wire on the side opposite to the terminal connection part of the crimping part. It means that it is on the opposite side to the terminal connection part of the crimping part.
Inspecting the above-mentioned winding state means inspecting whether the crimping pieces on the left and right in the width direction are evenly wound without being biased.

  Thus, the crimping portion for crimping the conductor portion of the covered electric wire extends from the crimping bottom surface on which the conductor portion is placed, and the width direction of the conductor portion placed on the crimping bottom surface. A winding state confirmation means comprising: a crimping piece that is wound from both sides in the direction and is crimped, and the winding state of the crimping piece that is wound and crimped on at least the outer surface of each crimping piece can be confirmed from the outside. By providing the above, it is possible to confirm the state of the crimping piece from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal that crimps the conductor portion of the covered electric wire. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In this way, the winding state confirmation means provided in each crimping piece is formed in the same shape or symmetrical shape, arranged at a symmetrical position, and opposed to the central portion in the width direction in the winding state. Accordingly, it is possible to confirm at a glance the deviation of the rolled-in state caused by the crimping piece.

  Specifically, since the winding state confirmation means formed in the same shape or symmetrical shape and arranged on each of the left and right crimping pieces at the symmetrical positions oppose each other in the width direction central portion in the winding state, the width direction central portion is By comparing the winding state confirmation means at the sandwiching position, it is possible to confirm at a glance whether the winding state by the crimping piece is good or not.

  In addition, since the winding state confirmation means is formed in the same shape or symmetrical shape, if the winding state is biased by the crimping piece, the shape of the opposing right and left winding state confirmation means is different. Thus, the winding state confirmation means at the position sandwiching the central portion in the width direction can be easily compared.

  Moreover, since the said winding state confirmation means is provided in at least one of the front end side or the base end side of the said conductor part to crimp | bond in the said crimping piece, it can confirm the winding state of a crimping piece easily. it can.

  Specifically, by providing a winding state confirmation means on the leading end side of the conductor portion that is unlikely to affect the mechanical strength (pullout strength) of the connection between the crimp terminal and the covered wire, for example, a part of the crimp piece is cut out. Even if it is a winding state confirmation means that reduces the strength of the crimped piece such as a notched part, a penetrating part that has been penetrated, or a concave part that has a concave outer surface, it affects the mechanical strength (drawing strength) with the conductor part. Without being done, it is possible to easily confirm the state of the crimping piece being wound.

  From the viewpoint of mechanical connectivity between the crimping terminal and the covered electric wire, it is possible to detect the quality of the crimping piece by detecting the winding condition on the base end side where the quality of the winding affects the mechanical strength. A certain mechanical strength (pull-out strength) can be ensured by even winding.

  Further, when the winding state confirmation means is provided on both the distal end side and the proximal end side of the conductor portion to be crimped in the crimping piece, the crimping state of the distal end side and the proximal end side is different. Even so, it can be confirmed at a glance.

  Further, in the crimping piece, the winding state confirmation means provided on the distal end side of the conductor portion to be crimped is constituted by a penetration confirmation means that penetrates the crimping piece, so that the crimp terminal and the covering are covered as described above. The rolled-in state of the crimping piece can be easily confirmed without affecting the electrical connection on the tip side of the conductor portion that is difficult to affect the mechanical strength (pullout strength) of the connection with the electric wire.

  In addition, the method for inspecting the winding state of the crimp terminal includes a winding state confirmation unit formed by crimping the conductor portion of the covered electric wire with the crimp terminal provided with the above-described winding state confirmation unit, and formed on the outer surfaces of both the crimping pieces. By detecting this state and inspecting the winding state of the conductor portion by the crimping piece, it is possible to inspect all the parts in a non-destructive manner, so that the crimping state can be easily confirmed. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  According to the present invention, a crimping terminal that can easily confirm whether the crimped piece is wound up after crimping without destroying the crimped terminal in the crimped state, and a winding for inspecting the winding state of the crimped terminal. A state inspection method can be provided, and the efficiency of the crimping process of the crimp terminal can be improved.

Explanatory drawing by the perspective view of a crimp terminal. Explanatory drawing of a crimp terminal. Explanatory drawing explaining the crimping | compression-bonding method and inspection method of a wire barrel part. Explanatory drawing about the crimping | compression-bonding state of a wire barrel part. The expansion explanatory view of the crimp terminal of the 2nd example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 2nd Example. The expansion explanatory view of the crimp terminal of the 3rd example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 3rd Example. Expansion explanatory drawing of the crimp terminal of a 4th Example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 4th Example. The expansion explanatory view of the crimp terminal of the 5th example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 5th Example. Expansion explanatory drawing of the crimp terminal of a 6th Example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 6th Example. The expansion explanatory view of the crimp terminal of the 7th example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of a 7th Example. The expansion explanatory view of the crimp terminal of the 8th example. Explanatory drawing about the crimping | compression-bonding state of the wire barrel part of an 8th Example.

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

  1 is an explanatory view of the crimp terminal 1 in a perspective view, FIG. 2 is an explanatory view of the crimp terminal 1 in a plan view, etc. FIG. 3 is an explanatory view for explaining a crimping method and an inspection method of the wire barrel portion 10. FIG. 4 shows an explanatory view of the crimped state of the wire barrel portion.

  1A shows a perspective view of the crimp terminal 1 divided at the center in the width direction, FIG. 1B shows a perspective view of the crimp terminal 1 and the covered electric wire 100 before crimping, and FIG. Shows a perspective view of the crimp terminal 1 in a crimped state.

  2A shows a plan view of the outer surface side of the crimp terminal 1 in a plate state before the bending process, and FIG. 2B shows a plan view of the crimp terminal 1 subjected to the bending process. (C) has shown the longitudinal cross-sectional view near the center of the width direction of the crimp terminal 1 in which the bending process was given.

  4A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 4B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  In the crimp terminal 1 of the present invention, the wire barrel portion 10 for crimping the core wire 102 of the covered electric wire 100 includes a barrel bottom portion 11 on which the core wire 102 is placed and a wire barrel piece extending from both sides of the barrel bottom portion 11 in the width direction W. And 12.

  On the outer surface of each wire barrel piece 12 to be wound and crimped from both outer sides in the width direction W of the core wire 102 placed on the barrel bottom 11, the winding state of the wire barrel piece 12 to be wound and crimped on the core wire 102 is externally applied. A winding state confirmation unit 20 that can be confirmed is provided.

The said winding state confirmation part 20 with which each wire barrel piece 12 was equipped is set as the structure which opposes in the crimping | compression-bonding center line CL in the said winding state while it forms in the same shape, arrange | positions in a symmetrical position.
Moreover, the winding state confirmation part 20 is provided in the front side of the longitudinal direction X of the said core wire 102 to crimp | bond in the said wire barrel piece 12 (refer FIG.1 (b), (c)).

  In addition, the said winding state confirmation part 20 with which the front side of the longitudinal direction X of the said core wire 102 to crimp | bond in the wire barrel piece 12 is notched and formed in the front upper end part of the wire barrel piece 12. FIG.

  The configuration of the crimp terminal 1 described above will be described in detail. The crimp terminal 1 includes a terminal box portion 2 that allows insertion of a male connector (not shown) from the front to the rear in the longitudinal direction X, and a predetermined length. The wire barrel portion 10 disposed via the first transition 18 and the insulation barrel portion 15 disposed via the second transition 19 having a predetermined length are integrally configured.

In addition, the wire barrel part 10 is the structure which winds the core wire 102 of the covered electric wire 100, and crimps | bonds it, and the insulation barrel part 15 is the structure which winds the insulation coating 101 of the covered electric wire 100, crimps | bonds and fixes it.
In addition, with the recent reduction in size and weight of the covered electric wire 100, the core wire 102 is configured by bundling ultrafine electric wires that are thinner than conventional stranded wires.

  As shown in FIG. 2A, the crimp terminal 1 is three-dimensionally configured by bending from a plate state before assembly. The terminal box portion 2 is formed of an inverted hollow square column body, and includes a contact piece 2a that is bent toward the rear in the longitudinal direction X and contacts a male connector to be inserted.

  As shown in FIG. 1B, the wire barrel portion 10 before crimping includes a barrel bottom portion 11 and wire barrel pieces 12 extending obliquely outwardly from both sides in the width direction W thereof. Further, the insulation barrel portion 15 formed in a substantially U shape in rear view and also before compression bonding is constituted by a barrel bottom portion 17 and an insulation barrel piece 16 extending obliquely outward and upward from both sides in the width direction W. It is formed in a substantially U shape in rear view.

  The barrel bottom portion 11 of the wire barrel portion 10 is provided with three serrations (not shown) formed in a groove shape in the width direction W arranged at a predetermined interval in the longitudinal direction X.

At the upper front end portion in the longitudinal direction X of the wire barrel piece 12, a winding state confirmation unit 20 formed by cutting out in a substantially rectangular shape long in the longitudinal direction X is provided.
In addition, the winding state confirmation part formed as a notch part in the left barrel piece 12a on the left side in plan view is a left winding state confirmation part 20a, and the winding state formed as a notch part in the right barrel piece 12b on the right side in plan view The confirmation part is a right winding state confirmation part 20b.

  In the state before crimping of the crimp terminal 1 configured as described above, the wire barrel portion 10 and the covered electric wire 100 are arranged as shown in FIG. 1B and crimped by the crimp applicator 200 shown in FIG. As shown in FIG. 1 (c), the core wire 102 is crimped by the wire barrel portion 10, and the crimp terminal 1 can be attached to the covered electric wire 100.

  Specifically, the covered electric wire 100 is placed from above the crimp terminal 1 so that the core wire 102 of the covered electric wire 100 is inside the wire barrel portion 10 and the vicinity of the front end of the insulating coating 101 is inside the insulation barrel portion 15. (See FIG. 1B), set on the anvil 201 of the crimping applicator 200 shown in FIG. 3 (see FIG. 3A).

  Then, as shown in FIG. 3 (b), the crimper 202 is lowered from above the wire barrel part 10, and the wire barrel part 10 is sandwiched between the anvil 201 and the crimper 202, as shown in FIG. The wire barrel piece 12 is curled so as to be rolled up.

  Simultaneously with the crimping of the wire barrel portion 10 described above, the crimper for the insulation barrel (not shown) is lowered from the top of the insulation barrel portion 15, and the insulation barrel portion 15 is moved with the anvil and crimper for the insulation barrel. The insulation barrel piece 16 is curled so as to be caught.

Thereby, the adjoining double mountain-shaped press-fit state can be configured by the wire barrel pieces 12 that are wound from both outer sides in the width direction W of the core wire 102 (see FIG. 3C). Similarly, the two adjacent crimped states can be formed by the insulation barrel pieces 16 wound from both outer sides in the width direction W of the insulating coating 101.
The tapered bell mouth 30 is formed at both ends in the longitudinal direction X of the wire barrel piece 12 by the curling of the wire barrel piece 12 by the crimper 202.

  Moreover, as shown to Fig.4 (a), in the front side of the longitudinal direction X of the crimping | compression-bonding center line CL formed of the two-cylinder-shaped wire barrel piece 12, the winding state confirmation part 20 of the left and right wire barrel piece 12 is shown. Will face each other in the width direction.

  Here, the inspection method of the winding state of the wire barrel part 10 of the crimp terminal 1 is demonstrated. As described above, the core wire 102 of the covered electric wire 100 is pressure-bonded with the wire barrel piece 12 provided with the winding state confirmation unit 20 (FIGS. 3A to 3C), as shown in FIG. Next, the state of the winding state confirmation part 20 formed on the outer side surfaces of both wire barrel pieces 12 is detected, and the winding state of the core wire 102 by the wire barrel pieces 12 is inspected.

  Specifically, as described in conjunction with FIGS. 3A to 3C, from the upper side, the portion of the winding state confirmation unit 20 facing the wire barrel unit 10 in a state where the core wire 102 is wound and crimped by the wire barrel piece 12 is viewed from above. An image is taken by the image inspection machine 203.

  As a result of the imaging, as shown in FIG. 4A, when the widths wa and wb of the left winding state confirmation unit 20a and the right winding state confirmation unit 20b facing each other across the crimping center line CL are equal, (A) As shown to the schematic sectional drawing of the winding state arrange | positioned at the upper part, it turns out that the left and right wire barrel pieces 12 (12a, 12b) are wound evenly and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 4B, it can be seen that when the widths w of the left and right winding state confirmation units 20 are different, the winding state of the left and right wire barrel pieces 12 is biased. Specifically, when the width wb of the right winding state confirmation unit 20b opposed across the crimping center line CL is narrower than the width wa of the left winding state confirmation unit 20a, the winding state disposed at the top of FIG. As shown in the schematic cross-sectional view, it can be seen that the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is biased. If the left and right wire barrel pieces 12 are unbalanced, the reliability of the electrical connection between the wire barrel portion 10 and the core wire 102 is reduced.

  In this way, the wire barrel portion 10 for crimping the core wire 102 of the covered electric wire 100 is extended from the barrel bottom portion 11 on which the core wire 102 is placed and the both sides in the width direction W of the barrel bottom portion 11, and is attached to the barrel bottom portion 11. A wire barrel piece 12 that is wound from both outer sides in the width direction W of the core wire 102 that is placed and is crimped, and the wire barrel piece 12 is wound around the wire barrel piece 12 to be crimped. By providing the winding state confirmation unit 20 capable of confirming the state from the outside, the uneven winding of the wire barrel piece 12 can be confirmed from the outside.

Therefore, the crimping state can be easily confirmed without destroying the crimp terminal 1 to which the core wire 102 of the covered electric wire 100 is crimped. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.
In the above-described inspection method, the image inspection machine 203 images the portion of the winding state confirmation unit 20 of the wire barrel unit 10 in the crimped state, but may be configured to inspect by visual inspection.

  In addition, by forming the winding state confirmation portion 20 provided in each wire barrel piece 12 in the same shape, arranged in a symmetric position, and facing the crimping center line CL in the winding state, It is possible to confirm at a glance the bias of the winding state due to the wire barrel piece 12.

  In detail, it arrange | positions in the symmetrical position in the right and left wire barrel piece 12 (12a, 12b), and the winding state confirmation part 20 (20a, 20b) formed in the same shape opposes by the crimping | compression center line CL in a winding state. Therefore, by comparing the left winding state confirmation unit 20a and the right winding state confirmation unit 20b at the position sandwiching the crimping center line CL, it is possible to clearly confirm the bias of the winding state by the wire barrel piece 12.

  For example, since the winding state confirmation part 20 is formed in the same shape, if the winding state is biased by the wire barrel piece 12, the widths wa of the left and right winding state confirmation parts 20 (20a, 20b) facing each other, Since a difference occurs in wb, the winding state confirmation unit 20 at a position sandwiching the crimping center line CL can be easily compared.

  Moreover, since the said winding state confirmation part 20 is provided in the front of the longitudinal direction X of the said core wire 102 to crimp | bond in the said wire barrel piece 12, it can confirm the winding state of the wire barrel piece 12 easily. it can. Specifically, when the wire barrel piece 12 is crimped by a crimping jig, a bell mouth 30 is formed in the longitudinal direction X front and rear of the wire barrel piece 12 and is wound around the longitudinal center of the wire barrel piece 12. The condition becomes loose.

  In order to confirm the winding state of the wire barrel piece 12 in the winding state confirmation unit 20 arranged on the front side in the longitudinal direction X so as to straddle the bell mouth 30 portion where the winding state becomes loose, the wire barrel part The influence on the electrical connection and mechanical strength (pullout strength) at 10 can be reduced, and the winding state of the wire barrel piece 12 can be easily confirmed.

  Furthermore, a part of the wire barrel piece 12 is provided by providing the winding state confirmation part 20 on the distal end side of the core wire 102 which is not easily affected by the mechanical strength (pullout strength) of the connection between the crimp terminal 1 and the covered electric wire 100. Even if it is the winding state confirmation part 20 which notched, it can confirm the winding state of the wire barrel piece 12 easily, without affecting the mechanical strength (pull-out strength) with the core wire 102. FIG.

In this embodiment, the wire barrel piece 12 is cut out to form the winding state confirmation unit 20, but it may be formed of a concave winding state confirmation unit in which the wire barrel piece 12 is recessed.
Furthermore, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material winding state confirmation part.

  In addition, on the outside of the front upper part of the wire barrel piece 12 that does not cut out the front upper part, the winding state confirmation part that is color-coated in the same shape as the above-mentioned winding state confirmation part 20, or the same figure carved on the surface by laser marking You may form in the winding state confirmation part by.

  Furthermore, the wire barrel piece 12 may be wound and pressure-bonded so as to form a bell mouth 30 in which the winding state is loosened at a position where the winding state confirmation unit 20 arranged on the front side in the longitudinal direction X does not straddle. . Alternatively, the wire barrel piece 12 may be wound and pressure-bonded so that the bell mouth 30 is not formed on the front side in the longitudinal direction X where the winding state confirmation unit 20 is disposed.

Thereby, for example, the mechanical strength (pullout strength) with the core wire 102 can be made to cooperate between the front and rear of the wire barrel piece 12 to obtain high strength.
Furthermore, since the winding of the wire barrel piece 12 becomes loose in the bell mouth 30 portion, the winding state confirmation unit 20 does not straddle the bell mouth 30 portion when it is necessary to strictly compare the bias in the winding state. By doing so, it is possible to strictly compare the bias of the entrainment state.

FIG. 5 shows an enlarged explanatory view of the crimp terminal 1 a, and FIG. 6 shows an explanatory view of the crimped state of the wire barrel portion 10.
5A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1a in a plate state before the bending process, and FIG. 5B shows the crimp terminal 1a subjected to the bending process. An enlarged plan view of the vicinity of the wire barrel part 10 is shown, and FIG. 5C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction of the crimped terminal 1a near the wire barrel part 10 subjected to the bending process.

  Moreover, Fig.6 (a) shows the enlarged plan view of the wire barrel part 10 vicinity of a favorable winding state, FIG.6 (b) is an expansion of the wire barrel part 10 vicinity of the state in which the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1a of the present embodiment includes a triangular winding state confirmation part 21 formed by obliquely cutting out the front upper end portion of the wire barrel piece 12 in the longitudinal direction X. In addition, about the other structure of the crimp terminal 1a, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation portion formed as a notch portion in the left barrel piece 12a on the left side in plan view is referred to as a left triangular winding state confirmation portion 21a, and the winding formed as a notch portion in the right barrel piece 12b on the right side in plan view. The state confirmation unit is a right triangular winding state confirmation unit 21b.

  By curling the wire barrel piece 12 of the crimp terminal 1a configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 as shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  And the triangular winding state confirmation part 21 of the left and right wire barrel pieces 12 is in the width direction on the front side in the longitudinal direction X of the crimping center line CL formed at the center of the wire barrel part 10 in the crimped state. It will be opposite.

  As shown in FIG. 6A, when the lengths La and Lb of the left triangular winding state confirmation unit 21a and the right triangular winding state confirmation unit 21b that are opposed to each other across the crimping center line CL are equal, a) As shown in the schematic sectional view of the winding state arranged in the upper part, it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 6B, when the lengths L of the left and right triangular winding state confirmation portions 21 are different, it can be seen that the winding state of the left and right wire barrel pieces 12 is biased.

  Specifically, when the length Lb of the right triangular winding state confirmation part 21b opposed across the crimping center line CL is shorter than the length La of the left triangular winding state confirmation part 21a, the upper part of FIG. As shown in the schematic sectional view of the arranged winding state, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is biased. I understand.

  Thus, the wire barrel piece 12 is provided with the triangular winding state confirmation unit 21 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 on each wire barrel piece 12 from the outside. Twelve uneven entrainments can be confirmed from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal 1a to which the core wire 102 of the covered electric wire 100 is crimped. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the triangular winding state confirmation part 21 provided in each wire barrel piece 12 is formed in a symmetric shape, arranged at a symmetric position, and opposed to the crimping center line CL in the wound state. Thus, it is possible to confirm at a glance the bias of the winding state due to the wire barrel piece 12.

  Specifically, the triangular winding state confirmation part 21 (21a, 21b), which is arranged in a symmetrical position in the left and right wire barrel pieces 12 (12a, 12b) and is formed in a symmetrical shape, is opposed to the crimping center line CL in the winding state. Therefore, by comparing the length La of the left triangular winding state confirmation portion 21a at the position sandwiching the crimping center line CL with the length Lb of the right triangular winding state confirmation portion 21b, the winding state by the wire barrel piece 12 Can be confirmed at a glance.

  In this embodiment, the wire barrel piece 12 is cut out to form the triangular winding state confirmation portion 21, but the concave winding state confirmation portion formed by denting the outer portion of the wire barrel piece 12 is used. May be.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, the outer side of the front upper portion of the wire barrel piece 12 that does not cut out the upper front portion is engraved on the surface by a winding state confirmation portion or laser marking that is color-coated in the same shape as the triangular winding state confirmation portion 21 described above. Alternatively, it may be formed by a winding state confirmation unit using the same figure.

FIG. 7 shows an enlarged explanatory view of the crimp terminal 1b, and FIG. 8 shows an explanatory view of the crimped state of the wire barrel portion 10. As shown in FIG.
7A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1b in a plate state before the bending process, and FIG. 7B shows the crimp terminal 1b subjected to the bending process. An enlarged plan view of the vicinity of the wire barrel part 10 is shown, and FIG. 7C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction of the crimped terminal 1b near the wire barrel part 10 subjected to the bending process.
Furthermore, FIG.7 (d) shows the end elevation in AA shown in FIG.7 (b), FIG.7 (e) shows the AA end elevation of another Example, FIG.7 (f) differs. The AA end view of the Example of this is shown.

  8A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 8B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1b of the present embodiment is provided with an oblique side winding state confirmation portion 22 formed in an oblique groove shape on the front upper portion in the longitudinal direction X of the outer surface of the wire barrel piece 12. In addition, about the other structure of the crimp terminal 1b, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation portion formed as a concave groove portion on the left barrel piece 12a on the left side in plan view is referred to as a left oblique side winding state confirmation portion 22a, and is formed as a concave groove portion on the right barrel piece 12b on the right side in plan view. The winding state confirmation unit is a right oblique side winding state confirmation unit 22b.

  By curling the wire barrel piece 12 of the crimp terminal 1b configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 as shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  Then, on the front side in the longitudinal direction X of the crimping center line CL formed at the center in the width direction W of the wire barrel part 10 in the crimped state, the oblique side winding state confirmation part 22 of the left and right wire barrel pieces 12 is in the width direction. It will be opposite.

  As shown in FIG. 8A, the positions of the rear end 22aa of the left oblique side winding state confirmation part 22a and the rear end 22ab of the right oblique winding state confirmation part 22b facing each other across the crimping center line CL are equal. In this case, as shown in the schematic cross-sectional view of the winding state disposed in the upper part of FIG. 8A, it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 8B, when the positions of the rear ends of the left and right oblique side winding state confirmation units 22 are different, it is understood that the winding state of the left and right wire barrel pieces 12 is biased. .

  Specifically, when the position of the rear end 22ab of the right oblique winding state confirmation unit 22b opposed across the crimping center line CL is ahead of the position of the rear end 22aa of the left oblique winding state confirmation unit 22a, 8 (b) As shown in the schematic sectional view of the winding state arranged at the upper part, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is It can be seen that there is a bias.

  As described above, the outer side surface of each wire barrel piece 12 includes the oblique side winding state confirmation unit 22 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 from the outside. Uneven winding of the wire barrel piece 12 can be confirmed from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal 1b to which the core wire 102 of the covered electric wire 100 is crimped. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the oblique side winding state confirmation portion 22 provided in each wire barrel piece 12 is formed in a symmetrical shape, disposed at a symmetrical position, and opposed to the crimping center line CL in the wound state. Thus, it is possible to confirm at a glance the bias of the winding state due to the wire barrel piece 12.

  Specifically, it is arranged at a symmetrical position in the left and right wire barrel pieces 12 (12a, 12b), and the oblique side winding state confirmation portion 22 (22a, 22b) formed in a symmetrical shape is opposed to the crimping center line CL in the winding state. Therefore, the wire barrel piece is obtained by comparing the position of the rear end 22aa of the left oblique side winding state confirmation unit 22a at the position sandwiching the crimping center line CL with the position of the rear end 22ab of the right oblique winding state confirmation unit 22b. 12 can be confirmed at a glance.

  In the present embodiment, the groove-shaped oblique side winding state confirmation part 22 on the outer surface of the wire barrel piece 12 is formed. However, as shown in FIG. Another member may be filled to form the oblique side winding state confirmation part.

Moreover, as shown in FIG.7 (f), the part which formed the oblique side winding state confirmation part 22 of the front upper part of the longitudinal direction X of the outer side surface of the wire barrel piece 12 has the same shape as the oblique side winding state confirmation part 22 It may also be formed by a winding state confirmation part coated with color or a winding state confirmation part by the same figure carved on the surface by laser marking or the like.
Of course, you may comprise by the through-hole of the same shape as the oblique side winding state confirmation part 22. FIG.

FIG. 9 shows an enlarged explanatory view of the crimp terminal 1c, and FIG. 10 shows an explanatory view of the crimped state of the wire barrel portion 10. FIG.
9A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1c in a plate state before bending, and FIG. 9B shows the crimp terminal 1c subjected to the bending process. An enlarged plan view of the vicinity of the wire barrel portion 10 is shown, and FIG. 9C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction near the wire barrel portion 10 of the crimp terminal 1c that has been subjected to the bending process.

  Moreover, Fig.10 (a) shows the enlarged plan view of the wire barrel part 10 vicinity of the favorable winding state, FIG.10 (b) is an expansion of the wire barrel part 10 vicinity of the state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1c of the present embodiment is provided with a square penetrating state confirmation part 23 formed by penetrating the wire barrel piece 12 in a square shape in side view at the front upper end portion in the longitudinal direction X. In addition, about the other structure of the crimp terminal 1c, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Moreover, the winding state confirmation part formed as a penetration part in the left barrel piece 12a on the left side in plan view is a left penetration state confirmation part 23a, and the winding state confirmation formed as a penetration part in the right barrel piece 12b on the right side in plan view This part is a right through winding state confirmation part 23b.

  By curling the wire barrel piece 12 of the crimp terminal 1c configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 as shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  And in the front side of the longitudinal direction X of the crimping center line CL formed at the center in the width direction W of the wire barrel part 10 in the crimped state, the square through winding state confirmation part 23 of the left and right wire barrel pieces 12 is in the width direction. Will face each other.

  As shown in FIG. 10A, the widths wa and wb of the left through winding state confirmation unit 23a and the right through winding state confirmation unit 23b facing each other across the crimping center line CL are equal in the width direction W. In this case, as shown in the schematic sectional view of the winding state arranged in the upper part of FIG. 10 (a), it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 10 (b), when the positions of the width w and the width direction W of the left and right square through winding state confirmation portions 23 are different, the winding state of the left and right wire barrel pieces 12 is biased. I understand that

  Specifically, when the width wb of the right through winding state confirmation unit 23b opposed across the crimping center line CL is shorter than the width wa of the left through winding state confirmation unit 23a and the position in the width direction W is different, 10 (b) As shown in the schematic sectional view of the winding state arranged at the upper part, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is It can be seen that there is a bias.

  In this way, each wire barrel piece 12 is provided with the square through-rolling state confirmation portion 23 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 from the outside. The uneven winding of the piece 12 can be confirmed from the outside.

  Therefore, the crimping state can be easily confirmed without destroying the crimping terminal 1c that crimps the core wire 102 of the covered electric wire 100. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the square through-rolling state confirmation portion 23 provided in each wire barrel piece 12 is formed in the same shape, arranged at a symmetrical position, and opposed to the crimping center line CL in the winding state. Thus, it is possible to confirm at a glance the deviation of the winding state due to the wire barrel piece 12.

  Specifically, the square through-rolling state confirmation portion 23 (23a, 23b) formed at the symmetrical position in the left and right wire barrel pieces 12 (12a, 12b) and formed in the same shape is a crimping center line CL in the wound state. In order to face each other, the width wa of the left through winding state confirmation unit 23a at a position sandwiching the crimping center line CL and the width wb of the right through winding state confirmation unit 23b are compared, so that the winding state by the wire barrel piece 12 is The bias can be confirmed at a glance.

  Moreover, since the square penetration winding state confirmation part 23 is formed in the front upper end portion in the longitudinal direction X of the wire barrel piece 12 so as to penetrate in a square shape in a side view, the strength reduction of the wire barrel piece 12 can be reduced. .

  In this embodiment, the wire barrel piece 12 is penetrated in a square shape to form the square through-rolling state confirmation unit 23. However, the outer portion of the wire barrel piece 12 is recessed in a substantially rectangular shape that is long in the longitudinal direction X. It may be a concave winding state confirmation part formed in the above manner.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, it may be formed by a winding state confirmation part color-coated in the same shape as the above-described square penetration state confirmation part 23 or a winding state confirmation part by the same figure carved on the surface by laser marking or the like.

FIG. 11 shows an enlarged explanatory view of the crimp terminal 1d, and FIG. 12 shows an explanatory view of the crimped state of the wire barrel portion 10. As shown in FIG.
FIG. 11A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1d in a plate state before bending, and FIG. 11B shows the crimp terminal 1d subjected to bending. An enlarged plan view of the vicinity of the wire barrel part 10 is shown, and FIG. 11C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction of the crimped terminal 1d subjected to the bending process.

  12A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 12B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1d of the present embodiment includes a front-rear direction notch winding state confirmation part 24 formed by notching the front end side in the longitudinal direction X of the wire barrel piece 12 in a square shape toward the rear. In addition, about the other structure of the crimp terminal 1d, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation portion formed as a notch portion in the left barrel piece 12a on the left side in plan view is referred to as a left concave winding state confirmation portion 24a, and the winding formed as a notch portion in the right barrel piece 12b on the right side in plan view. The state confirmation part is a right concave winding state confirmation part 24b.

  By curling the wire barrel piece 12 of the crimp terminal 1d configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 is shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  Then, on the front side in the longitudinal direction X of the crimping center line CL formed at the center in the width direction W of the wire barrel part 10 in the crimped state, the front-rear direction notch winding state confirmation part 24 of the left and right wire barrel pieces 12 is provided. It will be opposed in the width direction.

  As shown in FIG. 12A, the widths wa and wb of the left concave winding state confirmation portion 24a and the right concave winding state confirmation portion 24b that are opposed to each other across the crimping center line CL are equal to each other in the width direction W. In this case, as shown in the schematic cross-sectional view of the winding state disposed in the upper part of FIG. 12A, it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 12B, when the positions of the width w and the width direction W of the left and right front / rear direction notch winding state confirmation portions 24 are different, the left and right wire barrel pieces 12 are biased to the winding state. It can be seen that

  Specifically, when the width wb of the right concave winding state confirmation unit 24b opposed across the crimping center line CL is shorter than the width wa of the left concave winding state confirmation unit 24a and the position in the width direction W is different, 12 (b) As shown in the schematic sectional view of the winding state arranged at the upper part, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is It can be seen that there is a bias.

  As described above, the wire barrel piece 12 includes the front-rear direction notch winding state confirmation unit 24 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 from the outside. Uneven winding of the wire barrel piece 12 can be confirmed from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal 1d that crimps the core wire 102 of the covered electric wire 100. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the front-rear direction notch winding state confirmation portion 24 provided in each wire barrel piece 12 is formed in the same shape and disposed at a symmetrical position, and is opposed to the crimping center line CL in the winding state. By doing so, it is possible to confirm at a glance the bias of the winding state due to the wire barrel piece 12.

  Specifically, it is arranged at symmetrical positions in the left and right wire barrel pieces 12 (12a, 12b), and the front-rear direction notch winding state confirmation part 24 (24a, 24b) formed in the same shape is a crimping center line in the winding state. Since it is opposed to CL, the width wa of the left concave winding state confirmation part 24a at the position sandwiching the crimping center line CL is compared with the width wb of the right concave winding state confirmation part 24b, so that the winding by the wire barrel piece 12 is performed. It is possible to confirm the state bias at a glance.

  Moreover, since the square penetration winding state confirmation part 24 is formed by penetrating the upper end portion in the longitudinal direction X of the wire barrel piece 12 in a square shape when viewed from the side, the strength reduction of the wire barrel piece 12 can be reduced. .

  In this embodiment, the wire barrel piece 12 is cut into a square shape to form the front-rear direction cut-in winding state confirmation unit 24. However, the concave winding formed by denting the outer portion of the wire barrel piece 12 is used. It may be a state confirmation unit.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, it may be formed by a winding state confirmation part color-coated in the same shape as the above-described front-rear direction notch winding state confirmation part 24 or a winding state confirmation part by the same figure carved on the surface by laser marking or the like. Good.

FIG. 13 shows an enlarged explanatory view of the crimp terminal 1e, and FIG. 14 shows an explanatory view of the crimped state of the wire barrel portion 10. As shown in FIG.
13A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1e in a plate state before bending, and FIG. 13B shows the crimp terminal 1e subjected to the bending process. An enlarged plan view of the vicinity of the wire barrel portion 10 is shown, and FIG. 13C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction near the wire barrel portion 10 of the crimp terminal 1e subjected to the bending process.

  14A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 14B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1e of the present embodiment is formed by cutting the upper side portion of the wire barrel piece 12 in the vicinity of the front end in the longitudinal direction X into a square shape toward the center in the width direction W, and forming the width direction cut-in state confirmation unit 25. It has. In addition, about the other structure of the crimp terminal 1e, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation portion formed as a notch portion in the left barrel piece 12a on the left side in plan view is a left concave winding state confirmation portion 25a, and the winding formed as a notch portion in the right barrel piece 12b on the right side in plan view. The state confirmation part is a right concave winding state confirmation part 25b.

  By curling the wire barrel piece 12 of the crimp terminal 1e configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 as shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  Then, on the front side in the longitudinal direction X of the crimping center line CL formed at the center in the width direction W of the wire barrel part 10 in the crimped state, the width direction notch winding state confirmation part 25 of the left and right wire barrel pieces 12 is provided. It will be opposed in the width direction.

  As shown in FIG. 14 (a), the widths wa and wb of the left concave winding state confirmation part 25a and the right concave winding state confirmation part 25b facing each other across the crimping center line CL are equal to the position in the width direction W. In this case, as shown in the schematic cross-sectional view of the winding state arranged in the upper part of FIG. 14A, it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped.

  On the other hand, as shown in FIG. 14B, when the positions of the width w and the width direction W of the left and right width direction notch winding state confirmation portions 25 are different, the left and right wire barrel pieces 12 are biased to the winding state. It can be seen that

  Specifically, when the width wb of the right concave winding state confirmation unit 25b opposed across the crimping center line CL is shorter than the width wa of the left concave winding state confirmation unit 25a and the position in the width direction W is different, 14 (b) As shown in the schematic sectional view of the winding state arranged at the upper part, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding state of the left and right wire barrel pieces 12 is It can be seen that there is a bias.

  In this way, each wire barrel piece 12 includes the width direction notch winding state confirmation unit 25 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 from the outside. Uneven winding of the wire barrel piece 12 can be confirmed from the outside.

  Therefore, the crimping state can be easily confirmed without destroying the crimping terminal 1e to which the core wire 102 of the covered electric wire 100 is crimped. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the width direction notch winding state confirmation portion 25 provided in each wire barrel piece 12 is formed in the same shape and disposed at a symmetrical position, and is opposed to the crimping center line CL in the winding state. By doing so, it is possible to confirm at a glance the bias of the winding state due to the wire barrel piece 12.

  Specifically, it is arranged at a symmetrical position in the left and right wire barrel pieces 12 (12a, 12b), and the width direction notch winding state confirmation part 25 (25a, 25b) formed in the same shape is a crimping center line in the winding state. Since it is opposed to CL, the width wa of the left concave winding state confirmation part 25a at the position sandwiching the crimping center line CL is compared with the width wb of the right concave winding state confirmation part 25b, so that the winding by the wire barrel piece 12 is performed. It is possible to confirm the state bias at a glance.

  Moreover, since the square penetration winding state confirmation part 25 is formed by penetrating the upper end portion in the longitudinal direction X of the wire barrel piece 12 in a square shape in a side view, the strength reduction of the wire barrel piece 12 can be reduced. .

  In the present embodiment, the wire barrel piece 12 is penetrated in a square shape to form the width direction cut-in state confirmation unit 25. However, the outer portion of the wire barrel piece 12 has a substantially rectangular shape that is long in the longitudinal direction X. It may be a concave winding state confirmation part formed by being embedded.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, even if it forms in the winding state confirmation part by the same figure carved on the surface by the color coating with the same shape as the above-mentioned width direction notch winding state confirmation part 25 or laser marking etc. Good.

FIG. 15 shows an enlarged explanatory view of the crimp terminal 1 f, and FIG. 16 shows an explanatory view of the crimped state of the wire barrel portion 10.
15A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1f in a plate state before the bending process, and FIG. 15B shows the crimp terminal 1f subjected to the bending process. An enlarged plan view of the vicinity of the wire barrel portion 10 is shown, and FIG. 15C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction of the crimped terminal 1f near the wire barrel portion 10 subjected to the bending process.

  16A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 16B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1f of the present embodiment includes a front winding state confirmation portion 26 formed by cutting a front upper end portion in the longitudinal direction X of the wire barrel piece 12 into a substantially rectangular shape that is long in the longitudinal direction X, and a wire barrel piece. 12 is provided with a rear winding state confirmation portion 27 formed by denting the upper rear end portion of the outer side surface of the twelve outer surface in a substantially rectangular shape that is long in the longitudinal direction X with a half thickness. In addition, about the other structure of the crimp terminal 1f, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation part formed as a notch part and a concave part in the left barrel piece 12a on the left side in plan view is referred to as a left front winding state confirmation part 26a and a left rear winding state confirmation part 27a. The winding state confirmation part formed as a notch part and a concave part in the barrel piece 12b is a right front winding state confirmation part 26b and a right rear winding state confirmation part 27b.

  By curling the wire barrel piece 12 of the crimp terminal 1f configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 is shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  And in front of the longitudinal direction X of the crimping center line CL formed at the center of the wire barrel part 10 in the crimped state, the front winding state confirmation part 26 of the left and right wire barrel pieces 12 is opposed in the width direction. In the rear of the longitudinal direction X, the rear winding state confirmation portions 27 of the left and right wire barrel pieces 12 face each other in the width direction.

  As shown in FIG. 16 (a), the left front winding state confirmation unit 26a, the right front winding state confirmation unit 26b, the left rear winding state confirmation unit 27a, and the right rear winding that face each other across the crimping center line CL. When the widths wa and wb of the state confirmation part 27b are equal, the left and right wire barrel pieces 12 (12a and 12b) are evenly wound as shown in the schematic sectional view of the winding state arranged in the upper part of FIG. It can be seen that 102 is crimped.

  On the other hand, as shown in FIG. 16B, when the widths w of the left and right front winding state confirmation units 26 and the rear winding state confirmation unit 27 are different, the winding state of the left and right wire barrel pieces 12 is biased. You can see that it has occurred.

  Specifically, the width wb of the right front winding state confirmation unit 26b and the right rear winding state confirmation unit 27b facing each other across the crimping center line CL is the left front winding state confirmation unit 26a and the left rear winding state confirmation. When it is shorter than the width wa of the portion 27a, as shown in the schematic sectional view of the winding state arranged at the top of FIG. 16 (b), the winding amount of the right barrel piece 12b is wound larger than the winding amount of the left barrel piece 12a, It can be seen that the left and right wire barrel pieces 12 are biased.

  Thus, the front winding state confirmation part 26 and the back winding state confirmation part 27 which can confirm the winding state of the said wire barrel piece 12 which winds the said core wire 102 in each wire barrel piece 12 and crimps | bonds it from the outside. By providing, the winding-up of the wire barrel piece 12 can be confirmed from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal 1f that crimps the core wire 102 of the covered electric wire 100. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  Moreover, while forming the said front winding state confirmation part 26 and the back winding state confirmation part 27 with which each wire barrel piece 12 was equipped with the same shape and arrange | positioning in a symmetrical position, the crimping | compression center line CL in a winding state With this configuration, the front and rear of the wire barrel portion 10 can be confirmed at a glance even when the winding by the wire barrel piece 12 is different.

  Specifically, the front winding state confirmation unit 26 (26a, 26b) and the rear winding state confirmation unit 27 (27a, 27a, 27b) are arranged at symmetrical positions in the left and right wire barrel pieces 12 (12a, 12b) and formed in the same shape. 27b) is opposed to the crimping center line CL in the winding state, so that the width wa of the left front winding state confirmation part 26a and the left rear winding state confirmation part 27a at the position sandwiching the crimping center line CL, and the right front winding By comparing the width wb of the state confirmation unit 26b and the right rear winding state confirmation unit 27b, it is possible to confirm at a glance the deviation of the winding state due to the wire barrel piece 12.

  Moreover, since the back winding state confirmation part 27 is formed by denting the rear upper end portion of the outer side surface of the wire barrel piece 12 with a half thickness, it is compared with the front winding state confirmation part 26 formed by cutting out. Thus, the strength reduction of the wire barrel piece 12 can be reduced.

  Further, the crimp terminal 1f is wound backward on the distal end side (front side in the longitudinal direction X of the wire barrel portion 10) of the core wire 102, which hardly affects the mechanical strength (pullout strength) between the wire barrel piece 12 and the core wire 102. Compared with the confirmation part 27, the front winding state confirmation part 26 with which the strength fall of the wire barrel piece 12 is large is provided.

  And the front winding state confirmation is carried out to the base end side (rear side of the longitudinal direction X in the wire barrel part 10) of the core wire 102 which must ensure the mechanical strength (pull-out strength) with the core wire 102 by the wire barrel piece 12. Compared with the part 26, a rear winding state confirmation part 27 in which the strength reduction of the wire barrel piece 12 is small is provided. Thereby, reliable electrical connection can be realized while ensuring appropriate mechanical strength (pullout strength).

  In this embodiment, the wire barrel piece 12 is penetrated in a square shape to form the front winding state confirmation unit 26. However, the concave winding state confirmation unit formed by denting the outer part of the wire barrel piece 12 is used. It may be.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, it may be formed by a winding state confirmation part colored in the same shape as the above-mentioned front winding state confirmation part 26 or a winding state confirmation part by the same figure carved on the surface by laser marking or the like. Similarly, the rear winding state confirmation unit 27 may be formed of a winding state confirmation unit colored in the same shape or a winding state confirmation unit using the same figure carved on the surface by laser marking or the like.

FIG. 17 shows an enlarged explanatory view of the crimp terminal 1g, and FIG. 18 shows an explanatory view of the crimped state of the wire barrel portion 10. FIG.
FIG. 17A shows an enlarged plan view of the vicinity of the wire barrel portion 10 on the outer surface side of the crimp terminal 1g in a plate state before bending, and FIG. 17B shows the crimp terminal 1g subjected to bending. An enlarged plan view of the vicinity of the wire barrel portion 10 is shown, and FIG. 17C shows an enlarged longitudinal sectional view of the vicinity of the center in the width direction of the crimped terminal 1g near the wire barrel portion 10 subjected to bending processing.

  18A shows an enlarged plan view of the vicinity of the wire barrel portion 10 in a favorable winding state, and FIG. 18B shows an enlargement of the vicinity of the wire barrel portion 10 in a state where the winding of the wire barrel piece 12 is biased. A plan view is shown.

  The crimp terminal 1g of the present embodiment includes a circular through-rolling state confirmation portion 28 formed by penetrating the wire barrel piece 12 in the front upper end portion in the longitudinal direction X in a circular shape when viewed from the side. In addition, about the other structure of the crimp terminal 1g, it is the same as the structure of the crimp terminal 1 of the above-mentioned Example 1, and detailed description is abbreviate | omitted.

  Further, the winding state confirmation portion formed as a through portion in the left barrel piece 12a on the left side in plan view is referred to as a left circular winding state confirmation portion 28a, and the winding state confirmation formed as a through portion in the right barrel piece 12b on the right side in plan view. The right circular winding state confirmation unit 28b.

  By curling the wire barrel piece 12 of the crimp terminal 1g configured as described above and crimping the core wire 102 with the wire barrel portion 10, the width direction W of the core wire 102 as shown in FIG. The two-cylinder wire barrel pieces 12 that are wound from both outer sides and are adjacent to each other in the width direction W can be configured.

  Then, on the front side in the longitudinal direction X of the crimping center line CL formed at the center in the width direction W of the wire barrel part 10 in the crimped state, the circular through-rolling state confirmation part 28 of the left and right wire barrel pieces 12 is in the width direction. Will face each other.

  As shown in FIG. 18 (a), the lengths La and Lb of the left circular winding state confirmation part 28a and the right circular winding state confirmation part 28b facing each other across the crimping center line CL and the position in the width direction W are as follows. When equal, it can be seen that the left and right wire barrel pieces 12 (12a, 12b) are evenly wound and the core wire 102 is crimped, as shown in the schematic cross-sectional view of the winding state disposed in the upper part of FIG.

  On the other hand, as shown in FIG. 18B, when the length L and the position in the width direction W of the left and right circular through-rolling state confirmation portions 28 are different, the winding state of the left and right wire barrel pieces 12 is biased. You can see that it has occurred.

  Specifically, when the length Lb of the right circular winding state confirmation part 28b opposed across the crimping center line CL is shorter than the length La of the left circular winding state confirmation part 28a, and the position in the width direction W is different. 18B, as shown in the schematic sectional view of the winding state arranged at the top, the winding amount of the right barrel piece 12b is larger than the winding amount of the left barrel piece 12a, and the winding of the left and right wire barrel pieces 12 It can be seen that the state is biased.

  Thus, the wire barrel piece 12 is provided with the circular through-rolling state confirmation unit 28 that can confirm the winding state of the wire barrel piece 12 that winds and crimps the core wire 102 from the outside. The uneven winding of the piece 12 can be confirmed from the outside.

  Therefore, the crimped state can be easily confirmed without destroying the crimp terminal 1g crimped to the core wire 102 of the covered electric wire 100. Therefore, it is possible to establish a crimping state with high electrical connection reliability and mechanical connection reliability, and it is possible to improve the efficiency of the crimping process.

  In addition, the circular through-rolling state confirmation portion 28 provided in each wire barrel piece 12 is formed in the same shape, arranged at a symmetrical position, and opposed to the crimping center line CL in the winding state. Thus, it is possible to confirm at a glance the deviation of the winding state due to the wire barrel piece 12.

  Specifically, the circular through-rolling state confirmation part 28 (28a, 28b), which is arranged in a symmetrical position in the left and right wire barrel pieces 12 (12a, 12b) and formed in the same shape, is a crimping center line CL in the wound state. In order to face each other, the length La of the left circular winding state confirmation part 28a at the position sandwiching the crimping center line CL is compared with the length Lb of the right circular winding state confirmation part 28b, so that the winding by the wire barrel piece 12 is performed. It is possible to confirm the state bias at a glance.

  In addition, the circular through-rolling state confirmation unit 28 is formed by penetrating the upper end portion of the wire barrel piece 12 in the longitudinal direction X in a circular shape when viewed from the side, so that the strength reduction of the wire barrel piece 12 can be reduced. .

  In this embodiment, the wire barrel piece 12 is penetrated in a circular shape to form the circular through-rolling state confirmation portion 28. However, the outer portion of the wire barrel piece 12 is recessed into a substantially rectangular shape in the longitudinal direction X. It may be a concave winding state confirmation part formed in the above manner.

Moreover, you may form the part which notched the front upper part of the wire barrel piece 12 by embedding another members, such as resin, in a foreign material involvement state confirmation part.
Furthermore, it may be formed by a winding state confirmation part colored in the same shape as the circular through-rolling state confirmation part 28 described above or a winding state confirmation part by the same figure carved on the surface by laser marking or the like.

In correspondence between the configuration of the present invention and the above-described embodiment,
The conductor portion of the present invention corresponds to the core wire 102,
Similarly,
The crimping part corresponds to the wire barrel part 10,
The crimping bottom surface corresponds to the barrel bottom 11,
The crimping piece corresponds to the wire barrel piece 12,
The winding state confirmation means includes a winding state confirmation unit 20, a triangular winding state confirmation unit 21, a hypotenuse winding state confirmation unit 22, a square through winding state confirmation unit 23, a front-rear direction notch winding state confirmation unit 24, Corresponding to the width direction notch winding state confirmation unit 25, the front winding state confirmation unit 26, the rear winding state confirmation unit 27 and the circular through winding state confirmation unit 28,
The center part in the width direction corresponds to the crimping center line CL,
The tip side corresponds to the front side in the longitudinal direction X,
The proximal side corresponds to the rear side of the longitudinal direction X,
The penetration confirmation means includes a winding state confirmation unit 20, a triangular winding state confirmation unit 21, a square through winding state confirmation unit 23, a front-rear direction notch winding state confirmation unit 24, and a width direction notch winding state confirmation unit 25. Corresponding to the front winding state confirmation unit 26 and the circular through winding state confirmation unit 28,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

  For example, in the said Example, the winding state confirmation means (20-28) with which each wire barrel piece 12 was equipped was the same shape, the symmetrical shape which used the center of the width direction as a symmetric axis, or used the center of the width direction as a symmetric axis. Although it arrange | positions in the symmetrical position, the winding state of the right and left wire barrel pieces 12 should just be compared in the state which opposes on both sides of the crimping | compression-bonding center line CL. It may be a confirmation means arranged in

DESCRIPTION OF SYMBOLS 1 ... Crimp terminal 10 ... Wire barrel part 11 ... Barrel bottom part 12 ... Wire barrel piece 20 ... Winding state confirmation part 21 ... Triangle winding state confirmation part 22 ... Oblique side winding state confirmation part 23 ... Square through winding state confirmation part 24 ... Front-rear direction notch winding state confirmation unit 25 ... Width direction notch winding state confirmation unit 26 ... Front winding state confirmation unit 27 ... Backward winding state confirmation unit 28 ... Circular through-rolling state confirmation unit 100 ... Cover Electric wire 102 ... core wire CL ... crimping center line X ... longitudinal direction W ... width direction

Claims (4)

The crimping part that crimps the conductor part of the covered wire
A crimping bottom surface on which the conductor portion is placed;
Extending from both sides of the crimping bottom surface in the width direction, the conductor portion placed on the crimping bottom surface is wound from both outer sides in the width direction and crimped, and tapered bellmouths are formed at both ends in the longitudinal direction in the crimped state. A crimp terminal composed of a crimp piece ,
A winding state confirmation means capable of confirming the winding state of the crimping piece to wind and crimp the conductor part from the outside ;
In the longitudinal direction of each crimping piece, each of the distal end side and the proximal end side of the conductor part to be crimped is separately provided, and at least provided on the outer surface so as to straddle the bell mouth,
The winding state confirmation means provided for each crimping piece,
It is formed in the same shape or symmetrical shape, arranged at a symmetrical position,
It is configured to face at the central portion in the width direction in the rolled state,
Of the distal end side and the proximal end side in the longitudinal direction of the crimping piece, at least the winding state confirmation means on the proximal end side is configured by a concave portion with the outer surface recessed, and the longitudinal length of the crimping piece The winding state confirmation means provided on the distal end side in the direction and the winding state confirmation means provided on the base end side in the longitudinal direction of the crimping piece are formed in the same shape, and Crimp terminals arranged at positions symmetrical with respect to the intermediate position in the longitudinal direction . The crimp terminal according to claim 1, wherein the winding state confirmation means on the tip side in the longitudinal direction of the crimp piece is constituted by a penetration confirmation means penetrating the crimp piece . The crimp terminal according to claim 1, wherein the winding state confirmation means on the distal end side in the longitudinal direction of the crimp piece is configured by a concave portion in which the outer surface is recessed . Composed of a crimped bottom for placing the conductors portion of the covered electric wire, extend from both sides in the width direction of the piezoelectric adhesive bottom surface, and the crimping piece for crimping involving the both widthwise outer side of the conductor portion which is placed on the crimping bottom and, in the longitudinal direction of the both crimping pieces in the crimping portion for crimping the conductor portions, in each of the distal side and the proximal end side of the conductor portion for crimping the winding of the crimping piece for crimping involving a pre-Symbol conductor portions Crimping the conductor portion of the covered electric wire with a crimp terminal provided separately on at least the outer surface with a winding state confirmation means capable of confirming the entrainment state from the outside ,
Tapered bell mouths are formed at both ends in the longitudinal direction of the crimped piece in the crimped state ,
The winding state confirmation means provided for each crimping piece is:
It is formed in the same shape or symmetrical shape, and arranged so as to straddle the bell mouth at a symmetrical position,
It is a configuration that is opposed at the central portion in the width direction in the winding state,
Of the distal end side and the proximal end side in the longitudinal direction of the crimping piece, the winding state confirmation means on at least the proximal end side is configured by a concave portion in which the outer surface is recessed,
The winding state confirmation means provided on the distal end side in the longitudinal direction of the crimping piece and the winding state confirmation means provided on the proximal end side in the longitudinal direction of the crimping piece are formed in the same shape. , Arranged in a symmetrical position with respect to the intermediate position in the longitudinal direction of the crimping piece,
A method of inspecting a crimping terminal winding state in which a state of a winding state confirmation unit formed on the outer surfaces of both crimping pieces is detected and a winding state of the conductor portion by the crimping piece is inspected.

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