Shielded connector

Abstract

To provide a shielded connector capable of improving assembly performance.SOLUTION: In a shielded connector 1 including a shield wire 3 having an electric wire 13, a shielding member 15 made of a conductive material covering the outer periphery of the electric wire 13, and a sheath 17 made of an insulating material covering the outer periphery of the shielding member 15, and a shield shell 9 having a shield connection portion 37 electrically connected to the shielding member 15, the shielding member 15 is exposed from the sheath 17 with the outer periphery of the electric wire 13 covered in one layer, and is electrically connected to the shield connection portion 37.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a shielded connector. [Background technology]

[0002] Conventionally, a shielded connector includes a shielded electric wire having an electric wire, a braid as a shielding member made of a conductive material covering the outer periphery of the electric wire, and a sheath made of an insulating material covering the outer periphery of the braid. Also known is one including an outer conductor terminal as a shield shell having a barrel as a shield connection part electrically connected to the braid (see Patent Document 1). In this shielded connector, an annular sleeve is attached to the braid exposed from the sheath of the shielded electric wire, and the excess part of the braid is folded back and arranged to cover the outer periphery of the sleeve. The braid arranged on the outer periphery of the sleeve is electrically connected to the outer conductor terminal by crimping the barrel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-48818 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a shielded connector such as that disclosed in Patent Document 1, it is necessary to perform operations such as positioning a sleeve and folding back the shielding material at the portion where the shielding material is exposed from the sheath of the shielded electric wire, which increases the number of parts and labor required and reduces ease of assembly.

[0005] The present invention has been made in view of the problems inherent in the conventional technology, and an object of the present invention is to provide a shielded connector that can be easily installed. [Means for solving the problem]

[0006] The shielded connector of this embodiment comprises a shielded electric wire having an electric wire, a shielding member made of a conductive material covering the outer periphery of the electric wire, and a sheath made of an insulating material covering the outer periphery of the shielding member, and a shield shell having a shield connection portion electrically connected to the shielding member, wherein the shielding member is exposed from the sheath while covering the outer periphery of the electric wire in one layer, and is electrically connected to the shield connection portion. Effect of the Invention

[0007] According to the present invention, it is possible to provide a shielded connector that can improve the ease of assembly. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of a connector according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the connector according to the embodiment. [Diagram 3] FIG. 2 is a perspective view of a shielded wire and a shield shell of the connector according to the embodiment. [Figure 4] FIG. 2 is a perspective view of a shielded electric wire and a terminal of the connector according to the embodiment. [Diagram 5] FIG. 2 is a side view of a shielded wire and a shield shell of the connector according to the embodiment. [Figure 6] FIG. 2 is a cross-sectional view of a shielded wire of the connector according to the embodiment. [Figure 7] 2 is a cross-sectional view of the connector according to the embodiment when the sheath of the shielded wire is stripped off. FIG. [Figure 8] 4 is a cross-sectional view of the connector according to the embodiment when a shielding member of the shielded wire is peeled off. FIG. [Figure 9] 2 is a cross-sectional view of a shielded wire and a shield shell of the connector according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The shielded connector according to the present embodiment will be described in detail below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for the convenience of explanation and may differ from the actual ratios.

[0010] As shown in FIG. 1, the shielded connector 1 according to this embodiment is applied to electrically connect electrical components, such as between a power source and a device, or between devices. The shielded connector 1 is electrically connected to one electrical component, and can be fitted with a mating connector 101 electrically connected to the other electrical component. The shielded connector 1 electrically connects the electrical components by fitting with the mating connector 101. The shielded connector 1 forms a shielded circuit by being electrically connected to a grounded housing member 103. By forming the shielded circuit, it is possible to prevent the intrusion of noise and the like into the shielded connector 1, or the leakage of noise and the like from the shielded connector 1.

[0011] As shown in FIGS. 1 to 4, the mating connector 101 includes a mating housing 105, a mating terminal 107, and a mating shield shell 109. The mating housing 105 includes a mating terminal 107 and a mating shield shell 109. As shown in FIG.

[0012] 1 and 2, mating housing 105 is made of an insulating material such as synthetic resin. Mating housing 105 is formed in a housing shape that can be fitted with shielded connector 1, and the portion that is fixed to housing member 103 via multiple fixing members is formed in a flange shape. Packing 111 that maintains waterproofing between mating housing 105 and housing member 103 is arranged.

[0013] 3 and 4, a plurality of mating terminals 107 (two in this example) are used. The mating terminal 107 is made of a conductive material and has a tab-shaped mating connection portion 113. The mating terminal 107 is electrically connected, for example, by welding or crimping to an end portion of a mating electric wire (not shown) electrically connected to an electric component. The mating terminal 107 is accommodated inside a mating housing 105.

[0014] As shown in Figs. 2 and 3, a plurality of mating shield shells 109 (two in this example) are used. The mating shield shell 109 is made of a conductive material and formed into a cylindrical shape. A plurality of ground pieces 115 are provided on one side of the mating shield shell 109. The mating shield shell 109 is accommodated inside the mating housing 105 so as to maintain insulation with the mating terminal 107. When the mating housing 105 is assembled to the housing member 103, the ground pieces 115 of the mating shield shell 109 come into contact with the housing member 103, and the mating shield shell 109 is electrically connected to the housing member 103 and is grounded.

[0015] When the mating connector 101 is mated with the shielded connector 1, the mating terminal 107 is electrically connected to the terminal 5, and the mating shield shell 109 is electrically connected to the shield shell 9.

[0016] As shown in FIGS. 1 to 9, the shielded connector 1 includes a shielded electric wire 3, a terminal 5, an inner housing 7, a shield shell 9, and an outer housing 11. The shielded connector 1 includes a shielded electric wire 3, a terminal 5, an inner housing 7, a shield shell 9, and an outer housing 11.

[0017] As shown in Figs. 1 to 9, a plurality of shielded electric wires 3 (two in this example) are used, and the electric wire 3 includes an electric wire 13, a shielding member 15, and a sheath 17. The electric wire 13 is a covered electric wire including a core wire 19 formed by twisting together a plurality of wires made of a conductive material, and an insulating coating 21 made of an insulating material and covering the outer periphery of the core wire. The core wire 19 may be a single-core wire. The shielding member 15 is made of a braid formed by weaving a plurality of wires made of a conductive material, and is disposed so as to cover the outer periphery of the electric wire 13. The shielding member 15 is not limited to a braid, and may be a metal foil or the like. The sheath 17 is made of an insulating material, and is disposed so as to cover the outer periphery of the shielding member 15.

[0018] 2 and 4, a plurality of terminals 5 (two in this case) are used corresponding to the plurality of shielded electric wires 3 (two in this case). The terminals 5 are made of a conductive material and include a first terminal 23 and a second terminal 25.

[0019] The first terminal 23 includes an electric wire connecting portion 27 and a first connecting portion 29. The electric wire connecting portion 27 is formed in a flat plate shape extending in the longitudinal direction of the shielded electric wire 3. The electric wire connecting portion 27 is electrically connected to the core wire 19 of the electric wire 13 of the shielded electric wire 3 by welding, crimping, or the like. The first connecting portion 29 is a member continuous with the electric wire connecting portion 27, and is formed in a flat plate shape extending in the longitudinal direction of the shielded electric wire 3.

[0020] The second terminal 25 includes a second connection portion 31 and an electrical connection portion 33. The second connection portion 31 is formed in a flat plate shape extending in the length direction of the shielded electric wire 3. The second connection portion 31 is electrically connected to the first connection portion 29 of the first terminal 23 by welding, crimping, or the like. The electrical connection portion 33 is a member continuous with the second connection portion 31, and is formed in a circular tubular shape extending in the length direction of the shielded electric wire 3. A plurality of contact portions (not shown) are provided inside the electrical connection portion 33. When the shielded connector 1 and the mating connector 101 are mated, the mating connection portion 113 of the mating terminal 107 of the mating connector 101 is inserted into the electrical connection portion 33. The mating connection portion 113 inserted into the electrical connection portion 33 comes into contact with the plurality of contact portions, and the terminal 5 and the mating terminal 107 are electrically connected.

[0021] 2, a plurality of inner housings 7 (two in this case) are used corresponding to the plurality of terminals 5 (two in this case). The inner housing 7 is made of an insulating material such as synthetic resin. The inner housing 7 is formed in a cylindrical shape so as to be able to house the terminals 5. By housing the terminals 5 in the inner housing 7, the insulation between the terminals 5 and the shield shell 9 can be maintained.

[0022] As shown in Figs. 2, 3, 5, and 9, a plurality of shield shells 9 (two in this example) are used corresponding to each of a plurality of inner housings 7 (two in this example). The shield shell 9 is made of a conductive material and includes a tubular portion 35 and a shield connection portion 37. The tubular portion 35 is formed in a tubular shape so as to be able to accommodate the inner housing 7 therein. The inner housing 7 is accommodated in the tubular portion 35 so as to cover the entire outer surface of the inner housing 7, and the inner housing 7 is held in the tubular portion 35 via a locking portion. A plurality of elastic contact pieces 39 are provided on one side in the length direction of the tubular portion 35 so as to be elastically deformable. The shield connection portion 37 has a pair of clamping pieces formed of a single member continuous with the tubular portion 35 on the other side in the length direction of the tubular portion 35. The thickness of the clamping pieces of the shield connection portion 37 is set to be thinner than the thickness of the sheath 17 of the shielded electric wire 3. In the shield connection portion 37, a pair of clamping pieces are clamped to the outer periphery of the shield member 15 of the shielded electric wire 3, and the shield member 15 and the shield shell 9 are electrically connected. When the shield connector 1 and the mating connector 101 are mated, the mating shield shell 109 of the mating connector 101 is inserted into the inside of the cylindrical portion 35. The outer surface of the mating shield shell 109 inserted into the cylindrical portion 35 comes into contact with the multiple elastic contact pieces 39, and the shield shell 9 and the mating shield shell 109 are electrically connected. By electrically connecting the shield shell 9 and the mating shield shell 109, the shield shell 9 is electrically connected to the housing member 103 via the mating shield shell 109, and a shield circuit is formed. By forming the shield circuit, it is possible to prevent the intrusion of noise and the like into the shield connector 1 or the leakage of noise and the like from the shield connector 1.

[0023] As shown in Figs. 1 and 2, the outer housing 11 is made of an insulating material such as synthetic resin. The outer housing 11 is formed in a box shape so that it can be fitted with the mating housing 105 and can house the inner housing 7 and the shield shell 9. The inside of the outer housing 11 is partitioned so that it can house a plurality of (here, two) inner housings 7 and shield shells 9. A front holder 43 is attached to the mating surface side of the outer housing 11 with the mating housing 105. The front holder 43 holds the inner housing 7 and the shield shell 9 and a packing 41 that waterproofs the gap between the outer housing 11 and the mating housing 105. A rear holder 47 is attached to the opposite side of the mating surface of the outer housing 11 with the mating housing 105 so that it holds the inner housing 7 and the shield shell 9 and a waterproof plug 45 that waterproofs the gap between the outer housing 11 and the shielded electric wire 3. A detection member 49 that detects the mating state of the outer housing 11 and the mating housing 105 is disposed above the outer housing 11 so as to be movable between a temporary locking position and a full locking position. When the outer housing 11 is mated with the mating housing 105, the terminals 5 and the mating terminals 107 are electrically connected, and the shield shell 9 and the mating shield shell 109 are electrically connected.

[0024] In the conventional shielded connector, in the terminal processing of the shielded electric wire 3, first, a predetermined length of the sheath 17, the shielding member 15, and the insulating coating 21 are stripped off to expose the core wire 19. Next, a predetermined length of the sheath 17 is stripped off to expose the shielding member 15. Next, an annular sleeve (not shown) is placed on the exposed shielding member 15 so as to leave an excess portion. Then, the excess portion of the shielding member 15 is folded back toward the sheath 17 side so as to cover the sleeve, thereby completing the terminal processing of the shielded electric wire 3. For this reason, it is necessary to perform the work of placing the sleeve and the work of folding back the shielding member 15, which increases the number of parts and the number of man-hours, and reduces the ease of assembly.

[0025] In the conventional shielded connector, the crimping piece of the shield connection part 37 of the shield shell 9 is crimped to the outer periphery of the folded-back part of the excess part of the shield member 15 exposed from the sheath 17 for the shielded electric wire 3 that has been subjected to terminal processing. In the connection part between the shield member 15 and the shield connection part 37, the electric wire 13, the shield member 15, the sleeve, the folded-back part of the shield member 15, and the shield connection part 37 are arranged in the radial direction. For this reason, in the conventional shielded connector, many members are interposed in the electrical connection part between the shielded electric wire 3 and the shield shell 9, which reduces the heat dissipation of the electric wire 13 of the shielded electric wire 3. In addition, the electrical connection part between the shielded electric wire 3 and the shield shell 9 is large in size.

[0026] In contrast, in the terminal processing of the shielded electric wire 3 in the shielded connector 1, as shown in Fig. 6, first, a predetermined length of the sheath 17, the shielding member 15, and the insulating coating 21 are stripped off to expose the core wire 19. Next, as shown in Fig. 7, the sheath 17 is stripped off to expose the shielding member 15. Then, as shown in Fig. 8, a predetermined length of the exposed shielding member 15 is stripped off to complete the terminal processing of the shielded electric wire 3. This terminal processing of the shielded electric wire 3 does not require the arrangement of a sleeve or the folding back of the shielding member 15, so that the number of parts and the number of man-hours can be reduced and the ease of assembly can be improved.

[0027] In the shielded connector 1, as shown in FIG. 9, the crimping piece of the shield connection part 37 of the shield shell 9 is crimped to the outer periphery of the shield member 15 exposed from the sheath 17 with respect to the shielded electric wire 3 that has been subjected to terminal processing. In the connection part between the shield member 15 and the shield connection part 37, the electric wire 13, the shield member 15, and the shield connection part 37 are arranged in the radial direction. Therefore, in the shielded connector 1, the number of members arranged in the electrical connection part between the shielded electric wire 3 and the shield shell 9 can be reduced, and the heat dissipation of the electric wire 13 of the shielded electric wire 3 can be improved. In addition, the electrical connection part between the shielded electric wire 3 and the shield shell 9 can be made smaller in size. In addition, since the thickness of the crimping piece of the shield connection part 37 is set to be thinner than the thickness of the sheath 17, the outer diameter when the shield connection part 37 crimps the shield member 15 is smaller than the outer diameter of the sheath 17. Therefore, the connection part between the shield member 15 and the shield connection part 37 does not protrude to the outer diameter side of the shielded electric wire 3, and can be made even smaller in size. In addition, when placing the shield shell 9 on the shielded wire 3, the shield connection portion 37 can be abutted against the end face of the sheath 17, and the positioning of the shield shell 9 can be performed without increasing the number of parts or changing the design.

[0028] Such a shielded connector 1 includes a shielded electric wire 3 having an electric wire 13, a shielding member 15 made of a conductive material covering the outer periphery of the electric wire 13, and a sheath 17 made of an insulating material covering the outer periphery of the shielding member 15. The connector also includes a shield shell 9 having a shield connecting portion 37 electrically connected to the shielding member 15. The shielding member 15 is exposed from the sheath 17 with the outer periphery of the electric wire 13 covered in one layer, and is electrically connected to the shield connecting portion 37.

[0029] Since the shielding member 15 exposed from the sheath 17 is only one layer on the outer circumference of the electric wire 13, there is no need to perform the work of arranging a sleeve or the work of folding back the shielding member 15. This makes it possible to reduce the number of parts and the number of steps, and improve the ease of assembly. In addition, in the connection portion between the shielding member 15 and the shield connection portion 37, the electric wire 13, the shielding member 15, and the shield connection portion 37 are arranged in the radial direction. This makes it possible to reduce the number of members arranged in the electrical connection portion between the shielded electric wire 3 and the shield shell 9, and improve the heat dissipation of the electric wire 13 of the shielded electric wire 3. In addition, the electrical connection portion between the shielded electric wire 3 and the shield shell 9 can be made smaller.

[0030] Therefore, such a shield connector 1 can improve the ease of assembly.

[0031] In addition, the shield connecting portion 37 is electrically connected to the shielding member 15 by crimping the outer periphery of the shielding member 15. The outer diameter of the shield connecting portion 37 when the shielding member 15 is crimped is set to be smaller than the outer diameter of the sheath 17.

[0032] For this reason, the connection portion between the shielding member 15 and the shield connecting portion 37 does not protrude toward the outer diameter side of the shielded electric wire 3, and further miniaturization is possible. In addition, when the shielding shell 9 is disposed on the shielded electric wire 3, the shield connecting portion 37 can be abutted against the end face of the sheath 17, and the positioning of the shielding shell 9 can be performed without increasing the number of parts or changing the design.

[0033] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0034] For example, in the shielded connector according to the present embodiment, the mating shield shell is electrically connected to the housing member, but this is not limited thereto. For example, a mating housing may be provided at the terminal portion of the mating shielded electric wire, and the mating shield shell may be electrically connected to the mating shield member of the mating shielded electric wire.

[0035] Furthermore, the terminal is divided into the first terminal and the second terminal, but this is not limiting, and the terminal may be formed from one continuous member. [Explanation of symbols]

[0036] 1 Shielded Connector 3 Shielded wire 9 Shield Shell 13 Electric wire 15 Shielding material 17 Sheath 37 Shield connection

Claims

1. a shielded electric wire including an electric wire, a shielding member made of a conductive material covering an outer periphery of the electric wire, and a sheath made of an insulating material covering an outer periphery of the shielding member; a shield shell having a shield connection portion electrically connected to the shield member; Equipped with The shielding member is exposed from the sheath while covering the outer circumference of the electric wire with one layer, and is electrically connected to the shield connection portion.

2. the shield connection portion is electrically connected to the shield member by crimping an outer periphery of the shield member, 2. The shield connector according to claim 1, wherein an outer diameter of the shield connection portion when the shield member is crimped is set smaller than an outer diameter of the sheath.

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