Connector

Abstract

To provide a connector which enables reduction of the number of components and can achieve a shield function with a simple structure.SOLUTION: A connector 1 includes: a shield wire 10 having an electric wire and a braid 13; a terminal 20 connected to one end of the electric wire; a seal member 30 installed on the outer side of the shield wire 10; a shield member 40 attached to the seal member 30 and electrically connected to the braid 13; and a shield shell 60 which houses the seal member 30 and the shield member 40 and is electrically connected to the shield member 40. The seal member 30 has a seal part 31 and a cylindrical part 32. The braid 13 has a folded part 13a which is folded so as to cover the outer periphery of the cylindrical part 32 at the protruding end of the cylindrical part 32. The shield member 40 is attached to the cylindrical part 32 so as to sandwich the folded part 13a with the cylindrical part 32 in the radial direction of the shield wire 10.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a connector.

Background Art

[0002] Vehicles such as automobiles are equipped with a large number of in-vehicle devices such as motors, and the influence of electromagnetic waves generated from these devices cannot be ignored. In addition, the influence of electromagnetic waves generated from electric wires for high current and high voltage cannot be ignored. Although countermeasures vary depending on the source and type of electromagnetic waves, in-vehicle devices and the like are suppressed from being affected by electromagnetic waves by various methods. For example, conventionally, a connector having excellent shielding performance for blocking electrical noise such as electromagnetic waves and static electricity generated from electric wires and mounted on a vehicle has been proposed (see, for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Many of this type of connector have a shield terminal and a shield ring externally mounted on a braid covered on the outside of an electric wire, and the braid is electrically connected (i.e., grounded) to a shield shell through an elastic member (such as a spring) for contact attached to the shield ring, thereby exhibiting a shielding function.

[0005] However, the above connector has problems such as an increase in manufacturing (assembly) work and an increase in manufacturing cost because it has a large number of parts so that a shield terminal and a shield ring are externally mounted on the braid.

[0006] The present invention has been made in view of the above-described situation, and an object thereof is to provide a connector that can reduce the number of components and exhibit a shielding function with a simple structure.

Means for Solving the Problems

[0007] In order to achieve the above-described object, the connector according to the present invention is characterized as follows. A shielded wire having an electric wire and a braid covering the electric wire, A terminal connected to one end of the electric wire, A seal member externally mounted on the shielded wire, A shield member mounted on the seal member and electrically connected to the braid, A shield shell in which the seal member and the shield member are accommodated and electrically connected to the shield member, A connector comprising: The seal member has an annular seal portion and a cylindrical portion protruding from the seal portion in the extending direction of the shielded wire, The braid has a folded-back portion folded back so as to cover the outer periphery of the cylindrical portion at the protruding end of the cylindrical portion, The shield member is mounted on the cylindrical portion so as to sandwich the folded-back portion in the radial direction of the shielded wire together with the cylindrical portion, is a connector.

Effects of the Invention

[0008] According to the present invention, the braid has a folded-back portion that is folded back at the protruding end of the cylindrical portion so as to cover the outer periphery of the cylindrical portion, and the shield member is attached to the cylindrical portion so as to sandwich the folded-back portion together with the cylindrical portion in the radial direction of the shielded wire. Thereby, in the connector, the braid and the shield shell are electrically connected via the shield member, so that leakage of noise generated from the wire to the outside can be suppressed. As a result, according to the present invention, compared with a conventional connector using a plurality of shield members, the number of components can be reduced, and a shield function can be exhibited with a simple structure.

[0009] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the embodiments (hereinafter referred to as "embodiments") for carrying out the invention described below with reference to the accompanying drawings.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] Hereinafter, a connector 1 according to an embodiment of the present invention will be described with reference to the drawings.

[0012] Hereinafter, for convenience of explanation, as shown in FIG. 1 and the like, "front", "rear", "left", "right", "upper" and "lower" are defined. The "front-rear direction", the "left-right direction" and the "up-down direction" are orthogonal to each other. Note that the front-rear direction corresponds to the "extending direction" of the present invention.

[0013] The connector 1 shown in FIG. 1 etc. is a shield connector that is mounted on a vehicle and fixed to a member to be fixed such as a panel of the vehicle or in-vehicle equipment (for example, a terminal block etc.). As shown in FIGS. 2 to 3, the connector 1 is configured to include a shielded wire 10, a terminal 20, a seal member 30, a shield member 40, a rear holder 50, and a shield shell 60. Hereinafter, the shielded wire 10, the terminal 20, the seal member 30, the shield member 40, the rear holder 50, and the shield shell 60 that constitute the connector 1 will be described in order.

[0014] First, the shielded wire 10 will be described. As shown in FIGS. 2 to 5, the shielded wire 10 has a core wire 11, an insulating coating 12 coated on the outside of the core wire 11, a conductive braid 13 coated on the outside of the insulating coating 12, and an insulating sheath 14 coated on the outside of the braid 13. Note that the "wire" in the present invention refers to that which is composed of the core wire 11 and the insulating coating 12.

[0015] Next, the terminal 20 will be described. The terminal 20 is a general terminal that is connected to the front end of the core wire 11 (see FIG. 1) and connected to a mating member. As shown in FIGS. 2 to 4, the terminal 20 integrally has a wire connection portion 21 connected to the front end of the core wire 11 and a mating connection portion 22 extending forward from the wire connection portion.

[0016] Next, the seal member 30 will be described. The seal member 30 is a resin water-stop member that is externally mounted on the shielded wire 10 and seals between the outer peripheral surface of the shielded wire 10 and the inner peripheral surface of the shield shell 60. As shown in FIGS. 2 to 5, the seal member 30 integrally has an elastic seal portion 31 having a seal function and a cylindrical portion 32 protruding forward from the front end of the seal portion 31.

[0017] Next, the shield member 40 will be described. The shield member 40 is attached to the cylindrical portion 32 of the seal member 30 and is electrically connected to the braid 13. As shown in FIGS. 2 to 4, the shield member 40 integrally has a small-diameter portion 41 attached to the cylindrical portion 32 and a large-diameter portion 42 having a larger diameter than the small-diameter portion 41. As shown in FIGS. 2 and 5, the large-diameter portion 42 is provided with a protrusion 43 that protrudes radially outward and is in pressure contact with the inner peripheral surface of the shield shell 60.

[0018] Next, the rear holder 50 will be described. The rear holder 50 is externally mounted on the shielded electric wire 10 behind the seal member 30 and the shield member 40 and is attached to the rear end of the shield shell 60. As shown in FIG. 2, the rear holder 50 integrally has a substantially cylindrical peripheral wall portion 51 and a bottom wall portion 52 that is disposed so as to close the rear end of the peripheral wall portion 51 and is provided with a through hole penetrating in the front-rear direction. As shown in FIGS. 1 to 3, the peripheral wall portion 51 is provided with a plurality (two in this example) of locking pieces 53 formed by a pair of notches extending in the front-rear direction. As shown in FIGS. 1 and 3, the locking piece 53 is locked to a locking protrusion 63 of the shield shell 60 described later.

[0019] Next, the shield shell 60 will be described. The shield shell 60 houses the seal member 30 and the shield member 40 (a part of the shielded electric wire 10) and is electrically connected to the shield member 40. As shown in FIG. 2, the shield shell 60 integrally has a plate-like portion 61 provided with a through hole penetrating in the front-rear direction and a substantially cylindrical housing cylinder portion 62 extending rearward from the rear end surface of the plate-like portion. A part of the shielded electric wire 10, the seal member 30, and the shield member 40 are housed in the housing cylinder portion 62. Further, as shown in FIGS. 1 to 3, the housing cylinder portion 62 is provided with a plurality (two in this example) of locking protrusions 63 corresponding to the locking pieces 53 of the rear holder 50.

[0020] The shielded electric wire 10, the terminal 20, the seal member 30, the shield member 40, the rear holder 50, and the shield shell 60 that constitute the connector 1 have been described above. Hereinafter, an example of the assembly procedure of each member constituting the connector 1 will be described.

[0021] First, connect the front end of the core wire 11 of the shielded electric wire 10 that has undergone terminal processing to the wire connection part 21 of the terminal 20 (see FIGS. 1 and 3 to 4).

[0022] Next, insert the seal member 30 from the front end (rear end) of the shielded electric wire 10, and attach the seal member 30 to the outside of the shielded electric wire 10 (specifically, the sheath 14) (see FIGS. 3 to 5). Then, at the protruding end (front end) of the cylindrical part 32 of the seal member 30, fold the front end part of the braid 13 backward so as to cover the outer periphery of the cylindrical part 32, and form a folded-back part 13a (see FIGS. 3 to 5).

[0023] Next, insert the shield member 40 from the front end of the shielded electric wire 10, and attach the shield member 40 to the seal member 30 so as to sandwich the folded-back part 13a of the braid 13 in the radial direction together with the seal member 30 (specifically, the cylindrical part 32) (see FIGS. 3 to 5). At this time, the folded-back part 13a is pressed against the cylindrical part 32 by the small-diameter part 41, and the braid 13 and the shield member 40 are electrically connected.

[0024] Next, insert the shielded electric wire 10 with the seal member 30 and the shield member 40 attached from the rear of the shield shell 60, and accommodate the seal member 30 and the shield member 40 (a part of the shielded electric wire 10) in the accommodation cylindrical part 62 (see FIG. 3). As a result, the protruding part 43 of the shield member 40 is pressed against the inner peripheral surface of the accommodation cylindrical part 62, and the shield member 40 and the shield shell 60 are electrically connected.

[0025] Next, insert the rear holder 50 from the rear of the shielded electric wire 10 (or from the front of the shielded electric wire 10 before attaching the seal member 30 to the shielded electric wire 10), lock the locking piece 53 to the locking projection 63, and attach the rear holder 50 to the rear end of the shield shell 60 (see FIGS. 1 and 3). Thereby, the assembly of each member constituting the connector 1 is completed.

[0026] The above described an example of the assembly procedure of each member constituting the connector 1. In the assembled state, since the braid 13 and the shield shell 60 are electrically connected via the shield member 40 in the connector 1, leakage of noise generated from the electric wire composed of the core wire 11 and the insulating coating 12 to the outside is suppressed, and the shield function is exhibited.

[0027] As described above, according to the present embodiment, the braid 13 has a folded-back portion 13a that is folded back so as to cover the outer periphery of the cylindrical portion 32 at the protruding end of the cylindrical portion 32, and the shield member 40 is attached to the cylindrical portion 32 so as to sandwich the folded-back portion 13a in the radial direction together with the cylindrical portion 32. Thereby, since the braid 13 and the shield shell 60 are electrically connected via the shield member 40 in the connector 1, leakage of noise generated from the electric wire to the outside can be suppressed. As a result, according to the present embodiment, compared with the conventional connector using a plurality of shield members, the number of parts can be reduced, and the shield function can be exhibited with a simple structure.

[0028] Furthermore, according to the present embodiment, by providing the shield member 40 with a protruding portion 43 that protrudes radially outward and is pressed against the inner peripheral surface of the housing cylindrical portion 62 of the shield shell 60, compared with the conventional connector using other members, the number of parts can be reduced, and the shield function can be exhibited with a simple structure.

[0029] Furthermore, according to the present embodiment, by reducing the number of parts, the manufacturing (assembly) workability is excellent compared to the prior art, and the manufacturing cost can be reduced.

[0030] Furthermore, according to the present embodiment, by providing the seal member 30 (specifically, the cylindrical portion 32) with the function of the shield terminal in the conventional connector, a metal member can be replaced with a resin member, and the manufacturing cost can be reduced.

[0031] <Other embodiments> Note that the present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. In addition, the material, shape, dimensions, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

[0032] Here, the features of the above-described embodiments of the connector according to the present invention are briefly summarized and listed in [1] to [2] below.

[0033] [1] A shielded wire (10) having a wire (core wire 11, insulating coating 12) and a braid (13) covering the wire, A terminal (20) connected to one end of the wire (core wire 11), A seal member (30) externally mounted on the shielded wire (10), A shield member (40) mounted on the seal member (30) and electrically connected to the braid (13), A shield shell (60) in which the seal member (30) and the shield member (40) are housed and which is electrically connected to the shield member (40), A connector (1) comprising: The seal member (30) has: An annular seal portion (31) and a cylindrical portion (32) protruding from the seal portion (31) in the extending direction (front-rear direction) of the shielded wire (10), The braid (13) has: A folded-back portion (13a) folded back so as to cover the outer periphery of the cylindrical portion (32) at the protruding end of the cylindrical portion (32), The shield member (40) is: Mounted on the cylindrical portion (32) so as to sandwich the folded-back portion (13a) in the radial direction of the shielded wire (10) together with the cylindrical portion (32), Connector (1).

[0034] According to the configuration of [1] above, the braid has a folded-back portion that is folded back at the protruding end of the cylindrical portion so as to cover the outer periphery of the cylindrical portion, and the shield member is attached to the cylindrical portion so as to sandwich the folded-back portion together with the cylindrical portion in the radial direction of the shield wire. As a result, in the connector, the braid and the shield shell are electrically connected via the shield member, so that leakage of noise generated from the wire to the outside can be suppressed. As a result, according to this configuration, compared with the conventional connector using a plurality of shield members, the number of parts can be reduced, and the shield function can be exhibited with a simple structure.

[0035] [2] The connector (1) according to [1] above, In the shield member (40), A protrusion (43) is provided that protrudes outward in the radial direction and is pressed against the inner peripheral surface of the housing cylindrical portion (62) in the shield shell (60). Connector (1).

[0036] According to the configuration of [2] above, by providing the shield member with a protrusion that protrudes outward in the radial direction and is pressed against the inner peripheral surface of the housing cylindrical portion in the shield shell, compared with the conventional connector using other members, the number of parts can be reduced, and the shield function can be exhibited with a simple structure.

Description of reference numerals

[0037] 1 Connector 10 Shield wire 13 Braid 13a Folded-back portion 20 Terminal 30 Sealing member 31 Sealing portion 32 Cylindrical portion 40 Shield member 43 Protrusion 50 Rear holder 60 Shield shell 62 Housing cylindrical portion

Claims

1. A shielded wire having a wire and a braid covering the wire, a terminal connected to one end of the wire, a seal member externally mounted on the shielded wire, a shield member attached to the seal member and electrically connected to the braid, a shield shell in which the seal member and the shield member are accommodated and which is electrically connected to the shield member, A connector comprising: The seal member has an annular seal portion and a cylindrical portion protruding from the seal portion in the extending direction of the shielded wire, The braid has a folded-back portion folded back so as to cover the outer periphery of the cylindrical portion at the protruding end of the cylindrical portion, The shield member is mounted on the cylindrical portion so as to sandwich the folded-back portion in the radial direction of the shielded wire together with the cylindrical portion, Connector.

2. The connector according to claim 1, wherein the shield member is provided with a protrusion protruding outward in the radial direction and pressed against the inner peripheral surface of the accommodation cylindrical portion in the shield shell. Connector.

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