JPH1140273A - Shield connector - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable connection of a shielded electric wire and a shield shell without using an automatic machine. SOLUTION: A spring piece 42 is formed on a shield shell 40, and the spring piece 42 is formed on a shield layer 3 of a shielded electric wire 30.
The shield shell 40 and the shielded electric wire 30 were connected by making elastic contact with 3. Since the connection between the shield shell 40 and the shielded electric wire 30 is performed by the spring piece 42, the crimping operation that requires a dedicated automatic machine is not required, and the equipment cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a shield connector is disclosed in Japanese Patent Application Laid-Open No. 7-245153. In this configuration, a terminal fitting is attached to a connector housing, a conductor of a shielded wire is connected to the terminal fitting by crimping, and a shield shell surrounding the terminal fitting is connected to a shield layer of the shielded wire.

[0003]

The connection structure between the shield layer and the shield shell is such that a barrel portion is formed on the shield shell, and the barrel portion is pressed against the exposed portion of the shield layer. Since the crimping of the barrel portion is performed by a dedicated automatic machine, there is a problem that the equipment cost is increased. The present invention has been made in view of the above circumstances, and has as its object to enable connection of a shielded electric wire and a shield shell without using an automatic machine.

[0004]

According to a first aspect of the present invention, there is provided a connector housing, a terminal fitting attached to the connector housing, a shielded wire to which a conductor is connected to the terminal fitting, and the terminal fitting attached to the connector housing. And a shield shell attached to surround the shield wire and connected to a shield layer of the shielded wire.
A configuration is provided in which a conductive spring piece that can elastically contact the shield layer is provided.

In a second aspect of the present invention, in the first aspect, the spring piece is formed integrally with the shield shell.

[0006]

Actions and effects of the present invention

<Invention of claim 1> Since the shield shell and the shield layer are conductively connected by the spring piece, the crimping operation that requires a dedicated automatic machine is unnecessary, and the equipment cost can be reduced. . <Invention of claim 2> Since the spring piece is formed integrally with the shield shell, as compared with a case where the spring piece is assembled as a separate part to the shield shell, the number of assembly steps is reduced, and the working efficiency is improved. Are better.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The shielded connector according to the present embodiment includes a connector housing 10, a terminal fitting 20 housed in the connector housing 10, a shielded wire 30 connected to the terminal fitting 20, and a terminal fitting connected to the shielded wire 30. And a shield shell 40 attached to the connector housing 10 so as to surround the connector 20.

The connector housing 10 has a double cylindrical structure in which a circular inner cylindrical portion 11 and an outer cylindrical portion 12 are integrally formed concentrically by a connecting portion 13 at the front end of the inner cylindrical portion 11. A cavity 14 for accommodating the terminal fitting 20 is formed in the inner cylindrical portion 11.
A lance 15 for retaining the terminal fitting 20 is formed therein. The front end of the outer cylinder 12 is a hood 16 extending forward from the inner cylinder 11.
Reference numeral 6 exhibits a positioning function when fitted to a mating connector housing (not shown). On the other hand, the rear end of the outer cylinder 12 extends further rearward than the rear end of the inner cylinder 11,
The extension region is a connection space 17 for connecting the shield shell 40 and the shielded electric wire 30 as described later. The connecting portion 13 includes a shield shell 40.
Four slit holes 18 in an arc shape for mounting
Are formed.

The terminal fitting 20 has a tab 21 projecting forward.
And a barrel portion 22 at the rear end, and a locking portion 23 with the lance 15 is formed on the lower surface. The terminal fitting 20 is inserted into the cavity 14 from the rear, and the lance 15 is locked by the locking portion 23, so that the terminal fitting 20 is held in the withdrawal state, and the tab 21 projects forward of the inner cylindrical portion 11. It is supposed to. The conductor 31 of the shielded electric wire 30 is connected to the barrel portion 22 of the terminal fitting 20 by crimping. This crimping step is performed using a dedicated automatic machine (not shown) before inserting the terminal fitting 20 into the cavity 14.

In the shielded electric wire 30, a conductor 31 is covered with an insulating core 32, and a shield layer 33 made of a braid made of a plurality of fine wires braided so as to cover the outer periphery of the core 32 is arranged. 33 is covered with an insulating sheath. The shield shell 40 is connected to the shield layer 33. Further, the shielded electric wire 30 is held by the outer tubular portion 12 by the waterproof plug 35 fitted to the sheath 34. The shield shell 40 is formed of the conductor 3 of the shielded electric wire 30.
It is for shielding a region not shielded by the shield layer 33 in the conduction path constituted by the first metal terminal 1 and the terminal fitting 20, and is formed into a cylindrical shape as a whole by a conductive metal plate material. The first half of the shield shell 40 is divided into four parts in the circumferential direction, and the four divided pieces 41 are respectively passed through the slit holes 18 of the connecting part 13 from the rear, so that the shield shell 40 is
It is attached to the connector housing 10 so as to be sandwiched between the connector housing 10 and the outer cylindrical portion 12.

At the rear end of the shield shell 40,
4 for connecting to the shield layer 33 of the shielded electric wire 30
One spring piece 42 is formed integrally. This spring piece 4
No. 2 is formed by folding a portion extending from the rear end edge of the shield shell 40 inward and forward in a U-shape, so that elastic bending in the radial direction is possible. Further, the distance from the axis of the shield shell 40 to the spring piece 42 is set to a dimension smaller than the radius of the sheath 34 of the shielded electric wire 30, and the shield layer 33 is folded over the outer periphery of the sheath 34 and overlapped. It is supposed to be.

Next, the operation of the present embodiment will be described. Assembling of the shield connector is performed in the following procedure. First, the conductor 31 of the shielded electric wire 30 is crimped to the barrel portion 22 of the terminal fitting 20, and the shield layer 33 exposed by stripping the sheath 34 is turned outward to overlap the outer periphery of the sheath 34. On the other hand, the shield shell 40 is attached to the connector housing 10 by allowing the split piece 41 to pass through the slit hole 18.
In a state where the shield shell 40 is attached, the spring piece 42 is located in the connection space 17 in the outer tubular portion 12 and stands by for connection with the shielded electric wire 30. Thereafter, when the terminal fitting 20 is inserted into the cavity 14, the terminal portion of the shielded electric wire 30 connected to the terminal fitting 20 is accommodated, and the shield layer 33 is opposed to the spring piece 42 waiting in the connection space 17. Will be fitted inside. At this time, since the shield layer 33 elastically bends the spring piece 42 outward, the spring piece 42 elastically contacts the outer periphery of the shield layer 33 by its elastic restoring force, so that the shielded electric wire 30 and the shield shell 40 can be conducted. Connected.

As described above, in the present embodiment, the spring piece 42 is formed on the shield shell 40, and the spring piece 42 is elastically contacted with the shield layer 33, so that the shield shell 40 and the shielded electric wire 30 are connected to each other. To connect. Therefore, when the shield shell 40 and the shielded electric wire 30 are connected, a crimping operation that requires a dedicated automatic machine is not required, and the equipment cost can be reduced. Further, since the spring piece 42 is formed integrally with the shield shell 40, as compared with a case where the spring piece is assembled as a separate part to the shield shell, the number of assembly steps is reduced and the work efficiency is excellent. .

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the spring pieces are provided in a folded shape. However, according to the present invention, the spring pieces may be provided so as to extend rearward. (2) In the above embodiment, the shield layer is folded back so as to be sandwiched between the spring piece and the sheath.
The shield layer may be sandwiched between the spring piece and the core without being folded.

(3) In the above embodiment, the spring piece is formed integrally with the shield shell. However, according to the present invention, the spring piece may be formed as a separate component from the shield shell, and this may be assembled to the shield shell. (4) In the above embodiment, the number of spring pieces is four, but according to the present invention, the number may be three or less, or five or more. (5) In the above-described embodiment, the case where the shield layer is a braid in which a plurality of fine wires are braided in a net shape is described. The present invention can also be applied to a case where the shield layer is formed by using, or by applying a metal coating by vapor deposition, plating, or plasma spraying.

(6) In the above embodiment, an example of application to the male connector housing has been described, but the present invention can also be applied to the female connector housing. (7) In the above embodiment, the tip of the shield shell is divided into four pieces. However, the present invention provides a case in which the tip of the shield shell is not divided, and the number of divided pieces is three or less.
The present invention can be applied to a case where the number of divided pieces is five or more. (8) In the above embodiment, the case where the shield layer and the shield shell have a cylindrical shape has been described. However, according to the present invention, the shield layer and the shield shell may have a rectangular tube shape other than the cylindrical shape, One of the shield layer and the shield shell may have a cylindrical shape and the other may have a shape other than the cylindrical shape, and both the shield layer and the shield shell may have a shape other than the cylindrical shape.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment.

FIG. 2 is a front view of the first embodiment.

FIG. 3 is a perspective view of a shield shell according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing 20 ... Terminal fitting 30 ... Shield electric wire 31 ... Conductor 33 ... Shield layer 40 ... Shield shell 42 ... Spring piece

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Nori Inoue 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Harness Research Institute, Inc.

Claims (2)

[Claims] 1. A connector housing, a terminal fitting attached to the connector housing, a shielded electric wire to which a conductor is connected to the terminal fitting, and the shielded electric wire attached to the connector housing so as to surround the terminal fitting. And a shield shell connected to the shield layer, wherein the shield shell is provided with a conductive spring piece elastically contactable with the shield layer. . 2. The shield connector according to claim 1, wherein said spring piece is formed integrally with said shield shell.