JP2005317257A - Shielded connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielded connector capable of improving workability as compared with a conventional work of fixing a wire shield layer to a earth terminal connected to a counter earth member. <P>SOLUTION: A terminal fitting 20 is connected with a terminal of each coated wire 11 of a shielded wire 10 and each terminal fitting 20 is housed in a housing 21. A metal shielded shell 30 is provided in the housing 21 to surround each terminal fitting 20. A cover 40 surrounding each coated wire 11 drawn out of the housing 21 is attached to the housing 21. A shield member 50 collectively surrounding each coated wire 11 is buried in the cover 40. This shield member 50 is provided with a shielded shell side contact part 53 and a wire side contact part 54 which are contacted with the shielded shell 30 and the wire shielding layer 12 respectively when the cover 40 is attached. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a shield connector.

Conventionally, as a terminal processing structure of a shielded wire in which a plurality of covered wires are collectively surrounded by a cylindrical wire shield layer made of braided wire, a terminal fitting is connected to the end of each covered wire, while a wire shield layer In some cases, a cable is formed by twisting together the terminal portions of the cable, a ground terminal is fixed to the end of the cable, and the ground terminal is connected to a ground member of a counterpart such as a device. In addition, there exists what was described in the following patent document 1 as an example of the terminal processing structure of this kind of shielded electric wire.
JP 2002-238142 A

In the above, in addition to the operation of connecting the terminal metal fitting to each covered electric wire, it was necessary to perform the operation of fixing the wire shield layer to the ground terminal, so that there was a problem that workability was not good.
The present invention has been completed based on the above circumstances, and an object thereof is to improve workability.

  As means for achieving the above-mentioned object, the invention of claim 1 is a shield provided at the end of a shielded electric wire comprising a plurality of covered electric wires and an electric wire shield layer that collectively surrounds each covered electric wire. A connector, a terminal fitting connected to a terminal of each covered electric wire, a housing capable of accommodating each terminal fitting, a metal shield shell provided in a form surrounding the terminal fitting in a housing, and A cover that surrounds each of the covered electric wires drawn out from the housing and can be attached to the housing; and a metal shield member that can surround each of the covered electric wires is embedded in the cover. The shield member is provided with a contact portion that can come into contact with the shield shell and the wire shield layer as the cover is attached. Characterized in was a configuration that.

  According to a second aspect of the present invention, in the first aspect of the present invention, the cover is configured by a pair of halves that can be assembled to each other, and the shield member is halved corresponding to the halves. When the two halves are assembled so as to sandwich the housing, the cover is attached to the housing, and the contact portion of the shield member is in contact with the shield shell and the wire shield layer. It is characterized by where it comes to be.

  A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the contact portion includes an elastic contact piece capable of elastic contact with the wire shield layer or the shield shell. Have

<Invention of Claim 1>
As the cover is attached to the housing, the contact portion of the shield member is brought into contact with the shield shell and the wire shield layer. That is, since the wire shield layer can be connected to the shield shell connected to the other earth member by the cover mounting operation, the electric wire shield layer is connected to the earth terminal connected to the other earth member as in the prior art. The workability can be improved as compared with the case of performing the work of fixing.

<Invention of Claim 2>
The cover is attached to the housing by assembling both halves so that the housing is sandwiched therebetween. At this time, the half-shielded shield member is shaped to surround each covered electric wire, and the contact portion is in contact with the shield shell and the electric wire shield layer.

<Invention of Claim 3>
As the cover is attached to the housing, the elastic contact piece of the contact portion is elastically contacted to the shield layer and the shield shell, so that the contact property can be kept good.

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, the shield connector C provided in the terminal of the shielded electric wire 10 which has the three covered electric wires 11 is illustrated. In the following description, with respect to the front-rear direction, the left side of FIG. 1 is the front, the right side is the rear, and the vertical direction is described with reference to FIG.

  As shown in FIG. 1, the shielded electric wire 10 is composed of three covered electric wires 11 having a core wire covered with an insulating coating, and a braided wire and a substantially cylindrical electric wire shield surrounding the entire covered electric wire 11. It is comprised from the layer 12 and the outer resin-made outer skin | cover 13 covered around the electric wire shield layer 12. As shown in FIG. The shielded electric wire 10 has a configuration in which the front ends of the electric wire shield layer 12 and the outer skin 13 are cut out by a predetermined length so that each covered electric wire 11 is drawn forward, and the front end exposed to the outside of the electric wire shield layer 12 A receiving ring (not shown) is disposed on the inner peripheral side of the part, and a metal ring 14 is disposed on the outer peripheral side and is connected to a shield connector C described below in a state in which the ring is caulked.

  The shield connector C roughly includes three female terminal fittings 20 connected to the ends of the respective covered electric wires 11, a housing 21 that can accommodate each terminal fitting 20, and a shield that is inserted into the housing 21. The shell 30 and the cover 40 that can be attached to the rear end of the housing 21 are configured. The housing 21 is made of synthetic resin, and as shown in FIG. 2, includes a terminal accommodating portion 22 that can accommodate the terminal fitting 20 and a substantially cylindrical hood portion 23 that surrounds the substantially first half portion thereof. Has been. The terminal accommodating part 22 is provided with three cavities 24 into which the respective terminal fittings 20 can be inserted from the rear, and a lance 24a for preventing the terminal fittings 20 from coming off is protruded therein. A substantially second half portion of the terminal accommodating portion 22 is not surrounded by the hood portion 23 but is exposed to the outside, and this is the adherend portion 25 to the cover 40. A lever lock portion 26 for locking a lever 28 to be described later protrudes from a substantially central portion in the upper surface width direction of the adherend portion 25. Then, cover lock portions 27 for holding the cover 40 in an attached state are provided to project outwardly at both side positions of the outer peripheral surface of the adherend portion 25 with the lever lock portion 26 interposed therebetween. A gate-shaped lever 28 is pivotally supported on the outer surface of the hood 23 so as to be rotatable. The lever 28 is for assisting the fitting / removal operation of the housing 21 with respect to a counterpart housing (not shown), and has a known cam structure.

  The housing 21 is embedded with a shield shell 30 that is integrated with the housing 21 by insert molding when the housing 21 is molded. The shield shell 30 is made of metal and is formed in a substantially cylindrical shape that collectively surrounds all the terminal fittings 20 accommodated in the cavities 24 as a whole. The first half portion of the shield shell 30 is arranged to be exposed inward along the inner peripheral surface of the hood portion 23 and can be brought into contact with a ground member (not shown) of the counterpart housing that enters the inside thereof. The side connection portion 31 is used. On the other hand, the rear half portion of the shield shell 30 is arranged so as to be exposed outward along the outer peripheral surface of the adherend portion 25 of the terminal accommodating portion 22, and a shield member 50 set on the outer side thereof (details will be described later). ) And the shield member side connection portion 32 that can be contacted. The shield member side connection portion 32 is provided with a through-hole 32a through which the cover lock portion 27 described above is penetrated, and the hole edge engages with the cover lock portion 27, whereby the axis line The shield shell 30 can be prevented from coming off in the direction. Further, the counterpart side connection part 31 and the shield member side connection part 32 are set to have different diameters and are connected to each other via a step part 33.

  Next, the cover 40 will be described. As shown in FIG. 1, the cover 40 is for protecting the covered electric wire 11 drawn out from the housing 21 to the rear outside, and the three covered electric wires are assembled by assembling a pair of halves 41 to each other. 11 is formed in a substantially rectangular tube shape that collectively surrounds 11. The halved body 41 is made of synthetic resin, and includes a main body portion 42, a housing side holding portion 43 provided on the front end side of the main body portion 42, and a wire side holding portion 44 provided on the rear end side of the main body portion 42. The cover 40 can be formed by assembling two members having the same structure. The main body 42 has a substantially U-shaped cross-section (see FIG. 5), and extends in the front-rear direction corresponding to the length of the covered wire 11 exposed on the rear side of the housing 21. It is a split cylinder. Of the main body portion 42, the front end portion connected to the housing side holding portion 43 is formed so as to project sideways as it goes to the front end side.

  The housing-side holding portion 43 has a half-cylindrical shape that conforms to the outer shape of the attachment portion 25 of the housing 21 (the shield member-side connection portion 32 of the shield shell 30). It is attached along the width direction from the side. Therefore, when the two halves 41 are attached, the adherend portion 25 (shield member side connection portion 32) of the housing 21 is sandwiched between the housing side holding portions 43. The housing-side holding portion 43 has a notch formed in the lock groove portion 45 along the width direction, and the cover lock portion 27 of the adherend portion 25 can be fitted therein. When the fitted cover lock portion 27 is locked to the groove edge of the lock groove portion 45, the half body 41 (cover 40) is held in the attached state with respect to the housing 21 (see FIG. 4). In this holding state, the halved body 41 is prevented from falling backward from the housing 21 and the cover 40 is also prevented from being disassembled due to the halves 41 being displaced in the separating direction. Further, in the mounted state, the lever lock portion 26 is disposed between the upper end portions of the both housing side holding portions 43.

  The electric wire side holding portion 44 is attached to the front end portion of the outer skin 13 of the shielded electric wire 10 and is formed in a half cylinder shape along the outer shape of the attached portion, from the side of the attached portion. It is designed to be installed along the width direction. Therefore, when attaching both the halves 41, the front end portion of the outer skin 13 is sandwiched between the electric wire side holding portions 44. A holding arm 46 and a holding portion 47 are provided side by side in the front and rear near the split ends (abutting ends with the opposite electric wire side holding portion 44) on both outer side surfaces of the electric wire side holding portion 44. The arrangement of the arm 46 and the holding portion 47 is staggered between the side surface on the back side in FIG. 1 and the side surface on the near side in FIG. Then, when the two halves 41 are assembled, the holding arms 46 are locked to the opposing holding portions 47, whereby the halves 41 are displaced from the assembled state in the separating direction, and the cover 40 is Disassembly is prevented (see FIG. 4). Further, in the assembled state, the inner peripheral surfaces of both the electric wire side holding portions 44 are pressed against the outer peripheral surface of the outer skin 13, so that the shielded electric wires 10 are also prevented from coming off in the axial direction.

  Now, a metal shield member 50 is embedded in the cover 40 described above. Specifically, the shield member 50 includes a pair of half members 51. These half members 51 and the half members 41 are formed by insert molding when each half member 41 of the cover 40 is molded. The inner and outer peripheral surfaces are integrated and covered with a resin material forming the halved body 41. The half member 51 has a main body portion 52 having a substantially U-shaped cross section along the main body portion 42 of the half body 41 of the cover 40 (see FIG. 5) and extending in the front-rear direction. The length is set such that the rear end side is slightly shorter than the main body portion 42 of the cover 40. Therefore, when both the halves 41 of the cover 40 are assembled, both the main body portions 52 of the halved member 51 form a substantially rectangular tube shape and can collectively surround the three covered electric wires 11 inside. (See FIG. 5). Thereby, the covered electric wire 11 is covered with the shield shell 30, the shield member 50, and the electric wire shield layer 12 without interruption. Further, since the split end surface of the main body 52 is substantially flush with the split end surface of the half body 41 of the cover 40 and is exposed to the outside, the split end surfaces of both the half members 51 are arranged at the time of assembly. The contact is possible.

  A shield shell side contact portion 53 and a wire side contact portion 54 that can come into contact with the shield shell 30 and the wire shield layer 12 are provided at both front and rear ends of the main body portion 52 of the shield member 50 so as to extend in the front and rear directions. ing. The shield shell side contact portion 53 has a shape that extends forward from the front end of the main body portion 52 by a predetermined length, and then is folded back inward, whereby the cantilevered shield shell side elastic contact piece 55 is formed. Is formed. The shield shell side contact portion 53 has a front end position substantially the same as the housing side holding portion 43 of the half body 41. The shield shell-side elastic contact piece 55 has a mountain shape with an inwardly projecting end as a vertex, and the resin material forming the half body 41 of the cover 40 is removed from the periphery of the shield shell side elastic contact piece 55. And is elastically deformable along the width direction (see FIG. 4). When the cover halves 41 are attached so as to sandwich the adherend portion 25 of the housing 21 from both sides, the shield shell side elastic contact piece 55 is connected to the shield member 30 of the shield shell 30 exposed at the adherend portion 25. Elastic contact is made with the outer peripheral surface of the portion 32.

  The electric wire side contact portion 54 extends rearward by a predetermined length from the rear end of the main body portion 52, and is then folded back inward toward the front, whereby a cantilever electric wire side elastic contact piece 56 is formed. Has been. The electric wire side contact portion 54 has a rear end position substantially the same as that of the main body portion 42 of the half body 41 and does not protrude toward the electric wire side holding portion 44 side. The electric wire-side elastic contact piece 56 has a mountain shape with an inwardly extending end as a vertex, and the resin material forming the halved body 41 of the cover 40 is removed from the periphery of the electric wire side elastic contact piece 56. It is exposed to the outside and can be elastically deformed along the width direction (see FIG. 4). When the halves 41 of the cover 40 are attached so that the outer skin 13 of the shielded electric wire 10 is sandwiched from both sides, the electric wire side elastic contact piece 56 is attached to the outer peripheral surface of the metal ring 14 that is caulked to the electric wire shield layer 12. It is designed to be elastically contacted.

  This embodiment has the structure as described above, and the operation thereof will be described subsequently. In the terminal treatment of the shielded electric wire 10, first, the outer skin 13 and the electric wire shield layer 12 are cut out by a predetermined length to draw out the three covered electric wires 11 and the front end portion of the electric wire shield layer 12 is exposed. And the terminal metal fitting 20 is each connected to the terminal of each covered electric wire 11, and the metal ring 14 is caulked to the front end part of the electric wire shield layer 12.

  When each terminal fitting 20 is inserted into the corresponding cavity 24 of the housing 21 from this state, the terminal fitting 20 is retained by the lance 24a as shown in FIG. As shown in FIG. 3, after inserting all the terminal fittings 20, an operation of attaching the cover 40 to the housing 21 and the shielded electric wire 10 is performed. While the fully covered electric wire 11 is housed inside the two halves 41 of the cover 40, the two halves 41 are sandwiched between the adherent portion 25 of the housing 21 and the front end portion of the outer sheath 13 of the shielded electric wire 10 from both sides. Assemble. Then, as shown in FIG. 4, on the housing 21 side, both the housing side holding portions 43 are mounted so as to hold the adherend portion 25, and the cover lock portion 27 is fitted in the lock groove portion 45. By locking against the groove edge, the cover 40 is prevented from falling off the housing 21 and the halves 41 are prevented from separating. On the other hand, with respect to the shielded electric wire 10 side, both the electric wire side holding portions 44 are mounted while being pressed against the outer peripheral surface of the front end portion of the outer skin 13, and the holding arms 46 are engaged with the holding portions 47 facing each other. Both the halves 41 are prevented from being separated or displaced in the axial direction with respect to the shielded electric wire 10.

  At the time of this assembly, both contact portions of the shield member 50 embedded in the cover 40 are brought into contact with the shield shell 30 and the wire shield layer 12, respectively. Specifically, the shield shell-side elastic contact piece 55 of the shield shell-side contact portion 53 becomes a fulcrum on the base end side while the apex portion is in contact with the outer peripheral surface of the shield member-side connection portion 32 of the shield shell 30 with the assembly. As elastically deformed. On the other hand, the wire-side elastic contact piece 56 of the wire-side contact portion 54 is elastically deformed with the base end side as a fulcrum while the apex portion of the wire-side elastic contact piece 56 is in contact with the outer peripheral surface of the metal ring 14 caulked to the wire shield layer 12. Thereby, favorable contact property is obtained in each contact part. In this way, the wire shield layer 12 and the shield shell 30 are electrically connected via the shield member 50. In this assembled state, as shown in FIG. 5, the entire covered wire 11 is surrounded over the entire circumference by the shield member 50 formed in a substantially rectangular tube shape by assembling the cover 40. The shield shell 30, the shield member 50, and the wire shield layer 12 that are electrically connected to each other are covered over the entire length to achieve a shield. When the shield connector C is connected to the end of the shielded electric wire 10 as described above, the mating housing is fitted and connected to the housing 21 so that the mating connection portion 31 of the shield shell 30 is connected to the mating earth member.

  As described above, according to this embodiment, as the cover 40 is attached to the housing 21, the contact portion of the shield member 50 is brought into contact with the wire shield layer 12 and the shield shell 30. Since the wire shield layer 12 can be connected to the shield shell 30 connected to the other earth member by the mounting operation, the electric wire shield layer is fixed to the earth terminal connected to the other earth member as in the prior art. Compared with the case of performing work, workability can be improved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The shape of the cover and the shield member can be arbitrarily changed. For example, the cover and the shield member may be bent in the middle. In addition, for example, both halves of the cover may be connected by a hinge. Also, the cover and the shield member are not divided in half, and may be a substantially cylindrical one. Further, the cover and the shield member may be divided into three or more parts.

(2) The position of each contact portion (each elastic contact piece) in the shield member is not limited to the front and rear end portions of the shield member, and may be an intermediate position. Further, the elastic contact piece may be omitted and contacted inelastically.
(3) The arrangement of the cover lock portion in the housing can be set at a position deviated from the shield member side connection portion of the shield shell, in which case the through hole of the shield shell can be omitted.
(4) The number of covered wires of the shielded wire may be two or four or more.

(5) Besides the shield shell inserted into the housing, for example, the shield shell may be assembled to a molded housing.
(6) The present invention can also be applied to a device having no lever.
(7) The present invention can also be applied to a device that accommodates a male terminal fitting.

The top view of the shield connector and shield electric wire which concern on one Embodiment of this invention Side sectional view showing the terminal fitting inserted into the housing Top view showing the terminal fitting inserted into the housing Partially cutaway plan view showing the cover attached Front sectional view of the cover in the assembled state

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Shield electric wire 11 ... Covered electric wire 12 ... Electric wire shield layer 20 ... Terminal metal fitting 21 ... Housing 30 ... Shield shell 40 ... Cover 41 ... Half body 50 ... Shield member 53 ... Shell side contact part (contact part)
54 ... Electric wire side contact part (contact part)
55 ... Shell side elastic contact piece (elastic contact piece)
56 ... Electric wire side elastic contact piece (elastic contact piece)
C ... Shield connector

Claims (3)

A shield connector provided at the end of a shielded electric wire having a plurality of covered electric wires and an electric wire shield layer surrounding each covered electric wire at once,
Terminal fittings connected to the ends of the respective covered wires,
A housing that can accommodate each terminal fitting;
A metal shield shell provided in a form surrounding the terminal fitting in the housing;
A cover that surrounds each of the covered electric wires drawn out from the housing and is attachable to the housing;
A metal shield member that can surround each of the covered electric wires is embedded in the cover, and the shield member has contact portions that can contact the shield shell and the electric wire shield layer as the cover is attached. A shielded connector characterized by being provided. The cover is composed of a pair of halves that can be assembled to each other, and the shield member is halved corresponding to the halves, and the halves are sandwiched between the housings. 2. The assembly according to claim 1, wherein the cover is attached to the housing when assembled, and the contact portion of the shield member is in contact with the shield shell and the wire shield layer. Shield connector. The shield connector according to claim 1, wherein the contact portion includes an elastic contact piece capable of elastic contact with the wire shield layer and the shield shell.

Images