JP2023131888A - Terminal structure of shield wire, terminal-provided wire, and connector structure - Google Patents

Abstract

To provide a terminal structure of a shield wire, etc. in which the terminal structure has a good producing workability and has high reliability of electric connection with a shield layer.SOLUTION: First, a prescribed length of an outer cover 3 is peeled from an end of a shield wire 1 such that an internal braided wire 5 is exposed. Next, the exposed braided wire 5 is folded toward a direction opposite to the end side of the shield wire 1. Next, an inner ferrule 9 is put on an outer circumference of the braided wire 5. The inner ferrule 9 is a metallic tubular member, and one end side thereof has an expanded diameter to form a diameter expansion portion 11 having an outer diameter relatively larger than the remaining portion. Next, the braided wire 5 is folded again toward the end side of the shield wire 1. Next, an outer ferrule 13 is put on the outer circumference of the folded braided wire 5. Thus, the outer ferrule 13 and the diameter expansion portion 11 of the inner ferrule 9 are securely in direct contact with each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to a terminal structure of a shielded electric wire used in, for example, an automobile, an electric wire with a terminal, and a connector structure thereof.

Conventionally, shielded wires are sometimes used for electric wires used in automobile wiring harnesses in order to suppress the influence of noise generated from the electric wires on the outside and the influence of external noise on the electric wires.

As such a shielded wire, for example, a shielded wire has been proposed in which a shield layer made of a braided wire is formed on the outer periphery of a coated wire with an insulation coating, and a jacket is formed on the outer periphery of the shield layer. When constructing a connector by connecting a terminal or the like to the end of such a shielded wire, it is necessary to form a terminal structure for grounding the shield layer.

FIG. 8 is a diagram showing a process of forming a conventional terminal structure. First, as shown in FIGS. 8(a) and 8(b), a predetermined length of the outermost sheath 103 of the shielded wire 100 is cut and removed from the end to expose the braided wire 105 inside.

Next, as shown in FIG. 8(c), the braided wire 105 is cut to a predetermined length to expose the internal core portion 107. That is, the braided wire 105 is exposed for a predetermined length from the tip of the outer sheath 103, and the core portion 107 is exposed for a predetermined length from the tip of the braided wire 105. Note that the core portion 107 is an electric wire whose conductor is coated with insulation.

Next, as shown in FIG. 8(d), an inner ferrule 109 of a predetermined length is placed near the end of the outer sheath 103. Inner ferrule 109 is a metal annular member. Thereafter, as shown in FIG. 8(e), the braided wire 105 exposed from the outer sheath 103 is folded back to the outer sheath 103 side (toward the inner ferrule 109 side). Thereby, the inner ferrule 109 is covered with the braided wire 105.

Finally, as shown in FIG. 8(f), an outer ferrule 113 is placed around the outer periphery of the braided wire 105. The outer ferrule 113 is a metal annular member like the inner ferrule 109, and has an inner diameter larger than the outer diameter of the inner ferrule 109. By compressing the outer ferrule 113 from the outer periphery in this state, the inner ferrule 109 and the outer ferrule 113 can be crimped with the braided wire 105 sandwiched between them.

Thereafter, a terminal is connected to the core portion 107, and the terminal is housed in the connector body. At this time, the shield layer of the shielded wire 100 can be grounded by bringing the outer ferrule 113 into contact with a metal member inside the connector body and connecting the metal member to a ground wire.

However, in this method, it is necessary to cut the braided wire 105 into a predetermined length after exposing the braided wire 105. This increases the number of man-hours required. Furthermore, when cutting the braided wire 105, there is a risk of damaging the internal core portion 107. Furthermore, there is a risk that cut pieces of the braided wire 105 may enter other members and cause contamination. On the other hand, if the braided wire 105 is folded back without being cut, the folded length of the braided wire 105 becomes longer, resulting in an increase in the size of the terminal structure. Further, if the cut length of the outer sheath 103 is shortened, subsequent terminal connection work becomes difficult.

On the other hand, by making a cut in a part of the outer sheath, shifting the outer sheath toward the distal end, and then returning it to the rear without completely removing the outer sheath, the braided wire was spread out into a fan shape. A method has been proposed in which a braided wire is placed over an inner ferrule and an outer ferrule is attached from above (Patent Document 1).

Japanese Patent Application Publication No. 2001-257043

As described above, the outer ferrule 113 contacts the metal member within the connector and is grounded. However, in the conventional method, conduction is established between the braided wire 105 and the outer ferrule 113 through contact between the braided wire 105 and the outer ferrule 113, but the inner ferrule 109 is not involved in the conduction between the braided wire 105 and the metal member. Instead, it functions merely as a receiving member for crimping the outer ferrule 113. For this reason, the reliability of the electrical connection between the braided wire 105 and the metal member is not sufficient, and there is a risk that the grounding resistance will increase.

The present invention was made in view of such problems, and an object of the present invention is to provide a terminal structure of a shielded wire, which has good manufacturing workability and has high electrical connection reliability with the shield layer. .

In order to achieve the above-mentioned object, a first invention provides a shield having a core portion in which a conductive wire is insulated, a braided wire disposed around the outer periphery of the core portion, and an outer sheath covering the outer periphery of the braided wire. In the terminal structure of the electric wire, the braided wire exposed by peeling off a predetermined length of the outer sheath is folded back in a direction opposite to the end side of the shielded wire, and an inner ferrule is arranged around the outer periphery of the braided wire. The braided wire is folded back to the end side of the shielded wire so as to cover the outer periphery of the inner ferrule, and an outer ferrule is arranged around the outer periphery of the braided wire, and the inner ferrule and the outer ferrule are connected to the outer ferrule. The shielded wire terminal structure is characterized in that the inner ferrule is crimped with a braided wire sandwiched therebetween, and one end of the inner ferrule has an enlarged diameter and is in direct contact with the end of the outer ferrule. .

The tip of the inner ferrule may have an insertion part into which the end of the outer ferrule can be inserted, and the end of the outer ferrule may be inserted into the insertion part.

The insertion part is formed such that the end of the inner ferrule is folded back to the rear side with a gap, the tip of the outer ferrule has an outer shape corresponding to the inner surface shape of the insertion part, and the outer ferrule The tip of the ferrule may be in surface contact with the inner surface of the insertion portion.

A concave portion or a convex portion may be formed on the inner surface of the insertion portion, and a convex portion or a concave portion that can fit into the concave portion or the convex portion may be formed on the outer surface of the tip portion of the outer ferrule.

In the insertion portion, the outer ferrule and the inner ferrule may be crimped together.

A portion of the inner ferrule may be exposed on the outer peripheral surface of the terminal structure.

According to the first invention, since the inner ferrule is arranged on the outer periphery of the part where the braided wire is folded back and the braided wire is folded back forward again on the outer surface of the inner ferrule, the braided wire can be folded back without increasing the size of the terminal structure. Cutting work can be reduced.

Further, when the braided wire is sandwiched between the inner ferrule and the outer ferrule, the inner ferrule and the outer ferrule can also be brought into direct contact. Therefore, when grounding the braided wire, it is possible to utilize not only the electrical continuity between the braided wire and the outer ferrule, but also the electrical continuity between the braided wire and the inner ferrule, as in the conventional case. Therefore, higher electrical connection reliability can be obtained.

In addition, by forming an insertion part into which the end of the outer ferrule can be inserted at the tip of the inner ferrule, and inserting the end of the outer ferrule into the insertion part, the inner ferrule and outer ferrule can be brought into contact with each other more reliably to ensure conduction. can be done.

In addition, the insertion part is formed so that it is folded back to the rear side of the inner ferrule with a gap, and the tip of the outer ferrule has an outer shape that corresponds to the inner shape of the insertion part, so that the inner ferrule and outer ferrule can be connected more reliably. Conductivity can be achieved by making surface contact with the ferrule.

In addition, by forming a concave or convex part on the inner surface of the insertion part and forming a convex or concave part on the outer surface of the tip of the outer ferrule that can fit with the concave or convex part, the outer ferrule can be inserted into the insertion part. The two can be fitted together at the same time.

Furthermore, by exposing a portion of the inner ferrule to the outer circumferential surface of the crimp portion, the inner ferrule can be brought into direct contact with the metal member when accommodated in the connector body.

A second invention is an electric wire with a terminal having the terminal structure of the shielded electric wire according to the first invention, wherein a predetermined length of the insulation coating is peeled off from the tip of the core part, and the conductor wire inside is connected to the terminal. It is an electric wire with a terminal characterized in that it is connected.

According to the second invention, it is possible to obtain an electric wire with a terminal that also has high reliability in electrical connection with the shield layer.

A third invention is a connector structure in which the electric wire with a terminal according to the second invention is housed in a connector, wherein a metal member is arranged on an inner surface of a terminal insertion portion of the connector, and the braided wire and the metal member This is a connector structure characterized by electrical continuity between the two.

The metal member and the inner ferrule or the outer ferrule may be brought into contact with each other by a spring force.

According to the third invention, it is possible to obtain a connector structure with high electrical connection reliability with the shield layer.

In particular, higher electrical connection reliability can be obtained by bringing the inner ferrule or the outer ferrule into contact with the metal member using spring force.

According to the present invention, it is possible to provide a shielded wire terminal structure, etc., which has good manufacturing workability and high electrical connection reliability with the shield layer.

FIG. 3 is a diagram showing a work process of a terminal structure using a shielded wire 1. FIG. (a) is a sectional view of an electric wire terminal structure 20, and (b) is a sectional view showing a connector structure 21 using the electric wire terminal structure 20. (a) is a diagram showing a process of forming an electric wire terminal structure using the inner ferrule 9a, (b) is a cross-sectional view of the electric wire terminal structure 20a, (a), (b) is a figure which shows the formation process of the electric wire terminal structure using the inner ferrule 9a and the outer ferrule 13a. (a) is a sectional view of an electric wire terminal structure 20b, and (b) is a sectional view showing a connector structure 21a using the electric wire terminal structure 20b. (a), (b) is a figure which shows the formation process of the electric wire terminal structure using the inner ferrule 9b and the outer ferrule 13b. (a) is a sectional view showing a connector structure 21b, and (b) is a sectional view showing a connector structure 21c. FIG. 7 is a diagram showing the work process of a conventional terminal structure using a shielded electric wire 100.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the process of forming the terminal structure of the shielded wire 1. As shown in FIG. As shown in FIG. 1(a), in the shielded wire 1, a core portion 7, a braided wire 5, and a jacket 3 are arranged in order from the center side.

The core portion 7 is formed by insulating and covering a conductive wire. A braided wire 5 is arranged around the outer periphery of the core portion 7 as a shield layer. Furthermore, a jacket 3 that covers the braided wire 5 is arranged around the outer periphery of the braided wire 5.

As shown in FIG. 1(b), first, a predetermined length of the outer sheath 3 is peeled off and removed from the tip of the shielded wire 1 to expose the braided wire 5 inside. Next, as shown in FIG. 1(c), the exposed braided wire 5 is folded back in a direction opposite to the end side of the shielded wire 1. That is, the braided wire 5 is arranged around the outer periphery of the jacket 3. At this time, there is no need to cut the braided wire 5, and substantially the entire length of the exposed braided wire 5 is folded back to the outer circumferential side of the jacket 3.

Next, as shown in FIG. 1(d), an inner ferrule 9 is placed around the outer periphery of the braided wire 5. The inner ferrule 9 is a cylindrical member made of metal, and one end thereof is enlarged in diameter to form an enlarged diameter portion 11 having a larger outer diameter relative to the other portion. At this time, the inner ferrule 9 is placed at the end of the braided wire 5 (the end on the side where the braided wire 5 is folded back) with the enlarged diameter portion 11 facing toward the tip side of the shielded wire 1. Note that the axial length of the inner ferrule 9 is 1/2 or less of the length of the folded braided wire 5.

Next, as shown in FIG. 1(e), the braided wire 5 is folded back toward the end of the shielded wire 1. The outer periphery of the inner ferrule 9 is covered by the folded braided wire 5. At this time, the folding position of the braided wire 5 can be grasped by folding it back until the tip of the braided wire 5 hits the side surface of the enlarged diameter portion 11. Further, the enlarged diameter portion 11 can be exposed from the braided wire 5 without being covered by the braided wire 5.

Next, an outer ferrule 13 is placed around the outer periphery of the folded braided wire 5. That is, the braided wire 5 is sandwiched between the inner ferrule 9 and the outer ferrule 13. Note that the outer ferrule 13 is inserted into the shielded electric wire 1 in advance and retracted from the terminal structure. After the braided wire 5 is folded back again, by moving the outer ferrule 13 from the retracted position to the tip side of the shielded wire 1, the outer ferrule 13 can be placed on the outer periphery of the inner ferrule 9 (braided wire 5). can.

At this time, if the outer diameter of the enlarged diameter part 11 of the inner ferrule 9 is larger than the inner diameter of the outer ferrule 13, the end surface of the outer ferrule 13 can be arranged so as to abut against the side surface of the enlarged diameter part 11 of the inner ferrule 9. . Therefore, the outer ferrule 13 can be easily positioned, and the outer ferrule 13 and the inner ferrule 9 can be reliably brought into direct contact.

In this way, the inner ferrule 9 and the outer ferrule 13 sandwich the braided wire 5 and are compressed and crimped from the outer periphery of the outer ferrule 13, thereby forming a wire terminal structure.

FIG. 2(a) is a cross-sectional view showing the obtained wire terminal structure 20. In the wire terminal structure 20, a predetermined length of the outer sheath 3 is removed from the tip of the shielded wire 1, the exposed braided wire 5 is once folded back (to the side of the outer sheath 3), and then attached to the outer periphery of the inner ferrule 9. , it is folded back again toward the tip side (exposed core portion 7 side). Furthermore, an outer ferrule 13 is placed and crimped at the outer periphery of the inner ferrule 9 with the braided wire 5 interposed therebetween. In this way, it is not necessary to cut the braided wire 5 when manufacturing the wire terminal structure 20.

Further, by using the obtained electric wire terminal structure 20, an electric wire with a terminal can be obtained. First, a predetermined length of the insulating coating is peeled off from the tip of the core part 7 to expose the internal conductive wire, which is then crimped onto the crimp terminal, thereby allowing the terminal and the core part 7 to be connected.

FIG. 2(b) is a sectional view showing a connector structure 21 in which a terminal-equipped electric wire having an electric wire terminal structure 20 is accommodated in the connector 17. A metal member 19 is arranged on the inner surface of the terminal insertion portion of the connector 17 . The metal member 19 is, for example, cylindrical, and has a shape that approximately corresponds to the outer shape of the outer ferrule 13 after being crimped.

The terminal 15 is arranged at the tip side of the connector 17, and by inserting another terminal to be connected, the terminals can be electrically connected to each other. On the other hand, inside the connector 17, the outer ferrule 13 contacts the metal member 19 and is electrically connected. That is, the braided wire 5 of the shielded wire 1 and the metal member 19 are electrically connected. Since the metal member 19 is connected by a grounding wire (not shown), the shield layer (braided wire 5) of the shielded wire 1 can be grounded.

Note that the height of the expanded diameter of the expanded diameter portion 11 of the inner ferrule 9 after crimping (difference between the outer diameter of the expanded diameter portion 11 and the outer diameter of the portion other than the expanded diameter portion 11/2) is equivalent to the thickness of the outer ferrule 13. can do. By doing so, both the enlarged diameter portion 11 of the inner ferrule 9 and the outer surface of the outer ferrule 13 can be brought into direct contact with the metal member 19.

As described above, according to the present embodiment, by folding back the braided wire 5 twice, the compact electric wire terminal structure 20 can be formed without cutting the braided wire 5. Further, by bringing the inner ferrule 9 and the outer ferrule 13 into direct contact, the reliability of the electrical connection can be improved. For example, in addition to the route of conduction from the braided wire 5 to the metal member 19 via the outer ferrule 13, conduction can be made from the braided wire 5 to the metal member 19 via the inner ferrule 9 and the outer ferrule 13. Although an example has been described in which the inner ferrule 9 and the outer ferrule 13 are metal cylindrical members, the surfaces of each may be plated.

Further, by forming the enlarged diameter portion 11 on the inner ferrule 9, the folding position of the braided wire 5 and the positioning of the outer ferrule 13 can be easily determined. In particular, since the inner ferrule 9 is covered by the braided wire 5, it is difficult to determine the position of the inner ferrule 9. However, since a portion of the inner ferrule 9 is exposed to the outside, it is possible to prevent the inner ferrule 9 and the outer ferrule 13 from being crimped together with their positions shifting.

Next, a second embodiment will be described. FIG. 3(a) is a diagram showing a process of forming an electric wire terminal structure using the inner ferrule 9a. In the following description, the same reference numerals as in FIGS. 1 and 2 are given to components that perform the same functions as those in the first embodiment, and redundant description will be omitted.

The second embodiment is substantially the same as the first embodiment, but differs in the shape of the enlarged diameter portion 11 of the inner ferrule 9a. The enlarged diameter portion 11 at the tip of the inner ferrule 9a is formed so as to be folded back to form an insertion portion 23 into which the end of the outer ferrule 13 can be inserted. That is, the insertion portion 23 is formed such that the end portion of the inner ferrule 9a is folded back to the rear side with a gap.

After the braided wire 5 is folded back to the outer circumferential side of the inner ferrule 9a, the end of the outer ferrule 13 is inserted into the insertion portion 23, as shown in FIG. 3(a). In this state, as shown in FIG. 3(b), the outer ferrule 13 and the inner ferrule 9a are compressed from the outer periphery. Through the above steps, the wire terminal structure 20a can be formed.

According to the second embodiment, effects similar to those of the first embodiment can be obtained. Furthermore, since the insertion portion 23 into which the end of the outer ferrule 13 can be inserted is formed at the end of the inner ferrule 9a, positioning of the outer ferrule 13 is easy. Further, by inserting the outer ferrule 13 into the insertion portion 23, the inner ferrule 9a and the outer ferrule 13 can be brought into contact with each other more reliably.

Moreover, by forming the insertion part 23, when the outer ferrule 13 and the inner ferrule 9a are crimped together in the insertion part 23, a part of the inner ferrule 9a is exposed on the outer peripheral surface of the crimped part. Therefore, as described above, when accommodated in the connector 17, both the outer ferrule 13 and the inner ferrule 9 can be brought into contact with the metal member 19.

In addition, if the insertion part 23 can insert the end of the outer ferrule 13, instead of forming the end of the inner ferrule 9a by folding back, the insertion part 23 is formed by forming a groove on the side surface of the enlarged diameter part 11 for inserting the outer ferrule 13. may be formed.

Next, a third embodiment will be described. FIG. 4(a) is a diagram showing a process of forming an electric wire terminal structure using the inner ferrule 9a and the outer ferrule 13a. The third embodiment is substantially the same as the second embodiment, but differs in the end shape of the outer ferrule 13a.

As described above, the insert portion 23 is formed by folding back the enlarged diameter portion 11 at the end of the inner ferrule 9a. On the other hand, the tip of the outer ferrule 13 is formed with an outer shape corresponding to the inner surface shape of the insertion portion 23 of the inner ferrule 9a. That is, the end portion of the outer ferrule 13a also has a shape that is folded back. More specifically, the ends of the inner ferrule 9a and the outer ferrule 13a both have a tapered shape such that the outer diameter gradually increases from the tip (that is, the internal space gradually increases).

As shown in FIG. 4(b), when the outer ferrule 13a is slid from the rear and placed on the outer periphery of the inner ferrule 9a (braided wire 5), the tip of the outer ferrule 13a is completely inserted into the insertion part 23. Ru. At this time, the inner surface of the insertion portion 23 (inner ferrule 9a) and the outer surface of the outer ferrule 13a come into surface contact. Therefore, the inner ferrule 9a and the outer ferrule 13a can be reliably brought into contact and electrically connected.

As shown in FIG. 5(a), a wire terminal structure 20b can be obtained by crimping the inner ferrule 9a and the outer ferrule 13a. At this time, as shown in the figure, the inner ferrule 9a may be the only maximum outer diameter portion on the outer peripheral surface of the crimp portion.

FIG. 5(b) is a sectional view showing a connector structure 21a using an electric wire terminal structure 20b. In this case, only the inner ferrule 9a contacts the metal member 19.

According to the third embodiment, effects similar to those of the second embodiment can be obtained. Further, by making the end shape of the outer ferrule 13a correspond to the end shape of the inner ferrule 9a, the inner ferrule 9a and the outer ferrule 13a can be brought into contact with each other more reliably.

In addition, since the inner ferrule 9a contacts the braided wire 5 on its inner and outer surfaces, higher connection reliability can be expected by bringing the inner ferrule 9a into direct contact with the metal member 19. Thus, according to the first to third embodiments, the contact with the metal member 19 may be made only with the outer ferrule, only with the inner ferrule, or with both the inner ferrule and the outer ferrule. There may be.

In addition, in each of the embodiments described above, the outer periphery of the outer ferrule is compressed and crimped at the end, but crimping does not necessarily have to be carried out. FIG. 6 is a diagram showing a process of forming an electric wire terminal structure using, for example, an inner ferrule 9b and an outer ferrule 13b.

As shown in FIG. 6(a), the inner ferrule 9b has substantially the same shape as the inner ferrule 9a, but the inner ferrule 9b (insertion part 23) has a protrusion 25 formed on the inner surface that protrudes toward the inner surface. Ru. On the other hand, a recess 27 is formed on the outer surface of the tip of the outer ferrule 13b at a position corresponding to the projection 25.

As shown in FIG. 6(b), when the end of the outer ferrule 13b is completely inserted into the insertion portion 23 of the inner ferrule 9b, it is possible to fit the convex portion 25 and the concave portion 27. By fitting the convex portion 25 and the concave portion 27 in this manner, the inner ferrule 9b and the outer ferrule 13b are fixed.

In this embodiment, an example will be described in which a protrusion 25 is formed on the inner surface of the inner ferrule 9b (insertion part 23), and a recess 27 is formed on the outer surface of the tip of the outer ferrule 13a. The recess 27 may be reversed. That is, a concave portion or a convex portion is formed on the inner surface of the inner ferrule 9b (insertion portion 23), and a convex portion or a concave portion that can fit into the concave portion or convex portion of the inner ferrule 9b is formed on the outer surface of the tip portion of the outer ferrule 13b. It is fine if it is done.

As shown in FIG. 7A, by housing the inner ferrule 9b in the connector 17 in this state without crimping, the outer peripheral surface of the inner ferrule 9b can be brought into contact with the metal member 19. At this time, since a space is formed between the inner ferrule 9b and the outer ferrule 13b, the inner ferrule 9b and the outer ferrule 13b can be deformed in the center direction. For this reason, by making the outer diameter of the inner ferrule 9b on the outer peripheral side slightly larger than the inner diameter of the metal member 19, the inner ferrule 9b is pressed against the metal member 19 by the spring force and comes into contact with the metal member 19. Therefore, the inner ferrule 9b and the metal member 19 can be brought into contact with each other reliably. In this way, by exposing at least a portion of the inner ferrule to the outer peripheral surface of the terminal structure, the inner ferrule can be brought into direct contact with the metal member 19.

Note that the inner ferrule 9b and the outer ferrule 13b may be crimped while maintaining their spring force. For example, a spacer may be placed in a space at the end of the outer ferrule 13b and crimped, and the spacer may be removed after crimping.

Furthermore, as a method of bringing the inner ferrule (or outer ferrule) into contact with the metal member 19 using a spring force, a spring portion 29 may be provided in the metal member 19 as shown in FIG. 7(b). The spring portion 29 is an elastically deformable portion that protrudes inward. By making the inner diameter of the spring part 29 slightly smaller than the maximum outer diameter of the terminal structure, when the terminal structure is accommodated in the connector 17, the spring part 29 is elastically deformed and pressed against the inner ferrule or outer ferrule. It can be done.

In this way, by forming a spring portion that can reduce the diameter in the wire terminal structure or forming a spring portion 29 that can expand in diameter on the metal member 19, the inner ferrule or outer ferrule and the metal member 19 can be connected by spring force. can be brought into contact. Therefore, the reliability of the electrical connection between the metal member 19 and the braided wire 5 can be improved more reliably.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the technical idea stated in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs.

1...... Shield wire 3... Outer sheath 5... Braided wire 7... Core part 9, 9a, 9b... Inner ferrule 11... Enlarged diameter part 13, 13a, 13b... Outer. Ferrule 15...Terminal 17...Connector 19...Metal member 20, 20a, 20b...Wire terminal structure 21, 21a, 21b, 21c...Connector structure 23...Insertion part 25...... Convex portion 27...Concave portion 29...Spring portion 100......Shield wire 103...Outer sheath 105...Braided wire 107...Core portion 109...Inner ferrule 113...Outer ferrule

Claims (9)

A terminal structure of a shielded electric wire having a core portion in which a conducting wire is insulated, a braided wire disposed around the outer periphery of the core portion, and an outer sheath covering the outer periphery of the braided wire,
The braided wire exposed by peeling off a predetermined length of the outer sheath is folded back in a direction opposite to the end side of the shielded wire, and an inner ferrule is arranged around the outer periphery of the braided wire,
The braided wire is folded back to the end side of the shielded wire so as to cover the outer periphery of the inner ferrule, and an outer ferrule is disposed around the outer periphery of the braided wire, and the inner ferrule and the outer ferrule cover the outer ferrule of the braided wire. It is crimped with the
A terminal structure for a shielded wire, wherein one end of the inner ferrule has an enlarged diameter and is in direct contact with an end of the outer ferrule. The shield according to claim 1, wherein the tip of the inner ferrule has an insertion part into which the end of the outer ferrule can be inserted, and the end of the outer ferrule is inserted into the insertion part. Electric wire terminal structure. The insertion portion is formed such that the end of the inner ferrule is folded back to the rear side with a gap formed,
The shield according to claim 2, wherein the tip of the outer ferrule has an outer shape corresponding to the inner surface shape of the insertion portion, and the tip of the outer ferrule makes surface contact with the inner surface of the insertion portion. Electric wire terminal structure. A concave portion or a convex portion is formed on the inner surface of the insertion portion,
4. The shielded wire terminal structure according to claim 3, wherein a protrusion or a recess that can fit into the recess or protrusion is formed on the outer surface of the tip of the outer ferrule. 4. The shielded wire terminal structure according to claim 3, wherein the outer ferrule and the inner ferrule are crimped together in the insertion portion. The terminal structure for a shielded electric wire according to any one of claims 3 to 5, wherein a part of the inner ferrule is exposed on an outer peripheral surface of the terminal structure. An electric wire with a terminal having the terminal structure of the shielded electric wire according to any one of claims 1 to 6,
An electric wire with a terminal, characterized in that a predetermined length of the insulating coating is peeled off from the tip of the core portion, and the conducting wire inside is connected to a terminal. A connector structure in which the electric wire with a terminal according to claim 7 is housed in a connector,
A metal member is arranged on the inner surface of the terminal insertion part of the connector,
A connector structure characterized in that the braided wire and the metal member are electrically connected. 9. The connector structure according to claim 8, wherein the metal member is in direct contact with the inner ferrule.

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