Shield connector

Abstract

To provide a shield connector that can prevent leakage of an electric field and noise from a notch part for avoiding interference with a connection part in a shield shell, to prevent a reduction in shield performance.SOLUTION: A shield connector 1 comprises: an inner housing 13; an outer housing 15 that externally covers the inner housing 13; a connection part 17 that connects the inner housing 13 and the outer housing 15 to each other; and a shield shell 9 that is fitted between the inner housing 13 and the outer housing 15. The connection part 17 has a first connection part 19 that projects from the outer housing 15, a second connection part 21 that offsets in an assemble direction A relative to the first connection part 19 and projects from the inner housing 13, and a third connection part 23 that extends along the assemble direction A, thereby being formed into a crank shape.SELECTED DRAWING: Figure 7

Description

[Technical field]

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

[0002] Conventionally, a known shielded connector includes a shield shell, an inner housing, an outer housing, and a connecting portion that locally connects the inner housing and the outer housing (see Patent Document 1). This shielded connector includes an inner housing having a terminal accommodating chamber that accommodates a terminal provided on a shielded electric wire, a shield member (shield shell) made of a conductive material that is provided in a position that covers the inner housing from the outside, and an outer housing that covers the shield member from the outside. In this shielded connector, the inner housing and the outer housing are connected by a pair of connecting portions, and a notch is formed in the shield member (shield shell) at a position that corresponds to the connecting portion to avoid interference with the connecting portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-162902 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a shielded connector such as that disclosed in Patent Document 1, a notch is formed in the shield shell to avoid interference with the connecting portion. However, when a notch is formed in the shield shell to avoid interference with the connecting portion, electric fields and noise may leak through the notch formed in the shield shell, which may reduce the shielding performance.

[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 suppress the leakage of electric fields and noise from the cutouts that are provided to avoid interference with the connecting parts in the shield shell, thereby suppressing the deterioration of shielding performance. [Means for solving the problem]

[0006] A shielded connector according to one embodiment of the present invention comprises an inner housing that holds terminals, an outer housing that covers at least a portion of the inner housing from the outside, a connecting portion that connects the inner housing and the outer housing, and a shield shell that is fitted between the inner housing and the outer housing and surrounds at least a portion of the inner housing, and the connecting portion is formed in a crank shape having a first connecting portion that protrudes radially inward from the outer housing toward the inner housing, a second connecting portion that is offset from the first connecting portion in the assembly direction of the shield shell to the inner housing and the outer housing and protrudes radially outward from the inner housing toward the outer housing, and a third connecting portion that extends along the assembly direction and connects the first connecting portion and the second connecting portion. Effect of the Invention

[0007] According to the present invention, it is possible to provide a shielded connector that can suppress the leakage of electric fields and noise from cutouts that are provided to avoid interference with the connecting portions in the shielded shell, thereby suppressing deterioration of shielding performance. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an example of a shield connector according to an embodiment of the present invention. [Diagram 2] 1 is an exploded perspective view of a shield connector according to an embodiment of the present invention. [Diagram 3] 2 is a perspective view of a terminal and a shield shell of the shield connector according to the embodiment. FIG. [Figure 4]2 is a perspective view of a terminal of the shield connector according to the embodiment when a mating terminal is connected to the terminal. FIG. [Diagram 5] FIG. 2 is a rear view of the shielded connector according to the embodiment. [Figure 6] 2 is a partially cutaway perspective view of a housing of the shield connector according to the embodiment of the present invention. FIG. [Figure 7] 2 is a partially cutaway perspective view of the shielded connector according to the embodiment, showing a state in which a shield shell is fitted into a housing. 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 a high-voltage connector 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 3. By forming the shielded circuit, it is possible to suppress 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, mating connector 101 includes shielded wire 103, mating terminal 105, mating inner housing 107 as a mating housing (female side housing), mating shield shell 109, and mating outer housing 111.

[0012] A plurality of shielded electric wires 103 (two in this embodiment) are used, and each includes an electric wire 113, a shielding member 115, and a sheath 117. The electric wire 113 is a covered electric wire including a core wire formed by twisting together a plurality of wires made of a conductive material, and an insulating coating made of an insulating material and covering the outer periphery of the core wire. The core wire may be a single-core wire. The shielding member 115 is made of a braid formed by weaving a plurality of wires made of a conductive material, and is arranged to cover the outer periphery of the electric wire 113. The shielding member 115 is not limited to a braid, and may be a metal foil or the like. The sheath 117 is made of an insulating material, and is arranged to cover the outer periphery of the shielding member 115.

[0013] 2, a plurality of (two in this embodiment) mating terminals 105 are used corresponding to the plurality of (two in this embodiment) shielded electric wires 103. The mating terminals 105 are made of a conductive material.

[0014] The mating terminal 105 includes an electric wire connection portion 121 and a mating connection portion 123. The electric wire connection portion 121 is formed in a flat plate shape extending in the length direction of the shielded electric wire 103. The electric wire connection portion 121 is electrically connected to the exposed core wire of the shielded electric wire 103 by welding, crimping, or the like. The mating connection portion 123 is a member continuous with the electric wire connection portion 121, and is formed in a circular tubular shape extending in the length direction of the shielded electric wire 103. A plurality of contact portions (not shown) are provided inside the mating connection portion 123. When the shielded connector 1 and the mating connector 101 are fitted together, an electrical connection portion (not shown) of the terminal 7 of the shielded connector 1 is inserted into the mating connection portion 123. The electrical connection portion of the terminal 7 of the shielded connector 1 inserted into the mating connection portion 123 comes into contact with the plurality of contact portions, and the terminal 7 and the mating terminal 105 are electrically connected.

[0015] 2, a plurality of mating inner housings 107 (two in this embodiment) are used corresponding to the plurality of mating terminals 105 (two in this embodiment). The mating inner housing 107 is made of an insulating material such as synthetic resin. The mating inner housing 107 is formed in a cylindrical shape so as to be able to accommodate the mating terminal 105. By accommodating the mating terminal 105 in the mating inner housing 107, the insulation between the mating terminal 105 and the mating shield shell 109 can be maintained.

[0016] As shown in Figs. 2 to 4, a plurality of mating shield shells 109 (two in this embodiment) are used corresponding to each of a plurality of mating inner housings 107 (two in this embodiment). The mating shield shell 109 is made of a conductive material and includes a tubular portion 135 and a shield connecting portion 137. The tubular portion 135 is formed in a tubular shape so that the mating inner housing 107 can be housed therein. The tubular portion 135 houses the mating inner housing 107 inside so as to cover the entire outer surface of the mating inner housing 107, and the mating inner housing 107 is held by the tubular portion 135 via a locking portion 139. The shield connecting portion 137 has a pair of fastening pieces formed of a single member continuous with the tubular portion 135 on the other side in the length direction of the tubular portion 135. In the shield connection portion 137, a pair of fastening pieces are fastened to the outer periphery of the shield member 115 of the shielded electric wire 103, and the shield member 115 and the mating shield shell 109 are electrically connected to each other.

[0017] As shown in Figs. 1 and 2, the mating outer housing 111 is made of an insulating material such as synthetic resin. The mating outer housing 111 is formed in a box shape so that it can be fitted with the housing 5 of the shielded connector 1 and can accommodate the mating inner housing 107 and the mating shield shell 109. The inside of the mating outer housing 111 is partitioned so that it can accommodate a plurality of mating inner housings 107 and mating shield shells 109, respectively. On the mating surface side of the mating outer housing 111 with the housing 5 of the shielded connector 1, a packing 141 is attached inside to waterproof the mating inner housing 107, the mating shield shell 109, and the mating outer housing 111 and the housing 5. This packing 141 is held by a front holder 143. On the side of the mating outer housing 111 opposite to the mating surface with the housing 5, there are attached the mating inner housing 107, the mating shield shell 109, and a rear holder 147 that holds a waterproof plug 145 that waterproofs the space between the mating outer housing 111 and the shielded electric wire 103. A detection member 149 that detects the mating state of the mating outer housing 111 and the housing 5 is disposed on the upper part of the mating outer housing 111 so as to be movable between a provisional locking position and a full locking position.

[0018] As shown in FIGS. 1 to 7, the shielded connector 1 includes a housing 5 serving as a male housing, terminals 7, and a shield shell 9. As shown in FIG.

[0019] 1, 2, 5, 6, and 7, the housing 5 is made of an insulating material such as synthetic resin. The housing 5 is formed in a housing shape that can be fitted with a mating connector 101, and a device fixing portion that is fixed to the housing member 3 via a plurality of fixing members is formed in a flange shape. A packing 11 that maintains waterproofing between the housing 5 and the housing member 3 is disposed in the housing 5.

[0020] As shown in Figs. 5 to 7, the housing 5 includes an inner housing 13 as a terminal holding portion for holding the terminal 7, and an outer housing 15 for covering at least a part of the inner housing 13 from the outside. The inner housing 13 and the outer housing 15 are locally connected by a connecting portion 17. A plurality of inner housings 13 (two in this embodiment) are used corresponding to each of the plurality of terminals 7 (two in this embodiment). The inner housing 13 is made of an insulating material such as synthetic resin. The inner housing 13 is formed in a circular cylindrical shape so as to be able to house the terminal 7. By housing the terminal 7 in the inner housing 13, the insulation between the terminal 7 and the shield shell 9 can be maintained. On the other hand, the outer housing 15 is made of an insulating material such as synthetic resin. The outer housing 15 is formed in an elliptical cylindrical shape so as to be able to fit into the mating outer housing 111 and to be able to house a plurality of inner housings 13 and shield shells 9.

[0021] The connecting portion 17 has a first connecting portion 19 that protrudes radially inward from the outer housing 15 toward the inner housing 13. The connecting portion 17 has a second connecting portion 21 that is offset from the first connecting portion 19 in the assembly direction A of the shield shell 9 to the inner housing 13 and the outer housing 15 and protrudes radially outward from the inner housing 13 toward the outer housing 15. The connecting portion 17 extends along the assembly direction A of the shield shell 9 and is formed in a crank shape by further having a third connecting portion 23 that connects the first connecting portion 19 and the second connecting portion 21. A plurality of such connecting portions 17 (three in this embodiment) are formed at intervals in the circumferential direction of the inner housing 13. That is, a plurality of connecting portions 17 (three in this embodiment) are arranged at equal intervals in the circumferential direction of the inner housing 13, and a gap G is formed between these multiple connecting portions 17. The connecting portion 17 may be formed over the entire circumferential direction of the inner housing 13 without forming this gap G.

[0022] 3 to 5, a plurality of terminals 7 (two in this embodiment) are used. The terminals 7 are made of a conductive material and have a tab-shaped mating connection portion. The terminals 7 are electrically connected, for example, by welding or crimping to an end portion of an electric wire (not shown) electrically connected to an electric component. Such terminals 7 are accommodated inside the inner housing 13 of the housing 5.

[0023] As shown in Figs. 2, 3, 4, and 7, a plurality of shield shells 9 (two in this embodiment) are used. The shield shell 9 is made of a conductive material and formed in a cylindrical shape. A plurality of ground pieces 25 are provided on one side of the shield shell 9. The shield shell 9 is fitted between the inner housing 13 and the outer housing 15 so as to maintain insulation with the terminal 7, and surrounds at least a part of the terminal 7 and the inner housing 13. When the housing 5 is assembled to the housing member 3, the ground piece 25 of the shield shell 9 comes into contact with the housing member 3, and is electrically connected to the housing member 3 and grounded. A notch 27 is formed on the other side of the shield shell 9 according to this embodiment to avoid interference with the connecting portion 17 (see Figs. 2, 3, and 7). In addition, in the shield shell 9 according to this embodiment, a plurality of notches 27 (three in this embodiment) are formed at intervals in the circumferential direction of the shield shell 9. That is, a plurality of notches 27 (three in this embodiment) are arranged at equal intervals in the circumferential direction of the shield shell 9.

[0024] When the shielded connector 1 is mated with the mating connector 101, the terminal 7 is electrically connected to the mating terminal 105, and the shielded shell 9 is electrically connected to the mating shielded shell 109. When the shielded connector 1 is mated with the mating connector 101, the cylindrical portion 135 of the mating shielded shell 109 overlaps with the cutout portion 27 of the shielded shell 9, and the cutout portion 27 is covered by the cylindrical portion 135 (see FIG. 4).

[0025] Thus, the shielded connector 1 according to this embodiment includes the inner housing 13 that holds the terminals 7, the outer housing 15 that covers at least a part of the inner housing 13 from the outside, and the connecting portion 17 that connects the inner housing 13 and the outer housing 15. The shielded connector 1 includes a shield shell 9 that is fitted between the inner housing 13 and the outer housing 15 and surrounds at least a part of the inner housing 13. The connecting portion 17 has a first connecting portion 19 that protrudes radially inward from the outer housing 15 toward the inner housing 13. The connecting portion 17 also has a second connecting portion 21 that is offset from the first connecting portion 19 in the assembly direction A of the shield shell 9 relative to the inner housing 13 and the outer housing 15 and protrudes radially outward from the inner housing 13 toward the outer housing 15. The connecting portion 17 is formed in a crank shape and further includes a third connecting portion 23 that extends along the assembly direction A and connects the first connecting portion 19 and the second connecting portion 21.

[0026] In this embodiment, in order to enable the shield shell 9 in which the notch 27 is formed to be inserted to a predetermined fitting position, the connecting portion 17 is formed in a crank shape having a first connecting portion 19, a second connecting portion 21, and a third connecting portion 23 (see Figs. 6 and 7). That is, by offsetting and moving the connecting portion 17 (particularly the second connecting portion 21) in the assembling direction A of the shield shell 9, it becomes possible to insert the shield shell 9 deeply to a position where the notch 27 is covered by the cylindrical portion 135 of the mating shield shell 109. Therefore, by a part of the shield shell 9 entering between the inner circumference of the third connecting portion 23 of the connecting portion 17 and the outer circumference of the inner housing 13, it is possible to move the notch 27 of the shield shell 9 to a position where it is covered by the cylindrical portion 135 of the mating shield shell 109. Note that, if the shield shell 9 can be inserted to a predetermined fitting position, it is also possible not to form the notch 27.

[0027] As described above, according to this embodiment, it is possible to provide a shielded connector 1 that can suppress the leakage of electric fields and noise from the cutout portion 27, which is designed to avoid interference with the connecting portion 17 in the shielded shell 9, thereby suppressing the deterioration of shielding performance.

[0028] In the shielded connector 1, the inner housing 13 and the outer housing 15 are formed in a cylindrical shape, and a plurality of connecting portions 17 may be formed at intervals in the circumferential direction.

[0029] By forming multiple connecting portions 17 in this manner at intervals around the circumference of the inner housing 13, the crank-shaped connecting portions 17 can be efficiently molded without complicating the mold structure for molding the housing 5.

[0030] 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. [Explanation of symbols]

[0031] 1 Shielded Connector 7 Terminal 9 Shield Shell 13 Inner housing 15 Outer housing 17 Connecting part 19 1st connection part 21 2nd connection part 23 Third connection part A Assembly direction

Claims

1. an inner housing for holding the terminals; an outer housing that covers at least a portion of the inner housing from the outside; a connecting portion that connects the inner housing and the outer housing; a shield shell fitted between the inner housing and the outer housing to surround at least a portion of the inner housing, The connecting portion is a first connecting portion protruding radially inward from the outer housing toward the inner housing; a second connecting portion that is offset from the first connecting portion in an assembly direction of the shield shell with respect to the inner housing and the outer housing and that protrudes radially outward from the inner housing toward the outer housing; a third connecting portion extending along the assembly direction and connecting the first connecting portion and the second connecting portion, the third connecting portion being formed in a crank shape; Shielded connector.

2. The inner housing and the outer housing are formed in a cylindrical shape, The connecting portion is formed in a plurality of portions at intervals in the circumferential direction.

2. The shielded connector according to claim 1.

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