JP2000340304A - Shielded connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shielded connector having a small number of parts. SOLUTION: A rubber plug 40 fitted to a shielded wire 20 is formed of conductive rubber, and a first cylindrical part 41 of the rubber plug 40 is conductively connected to a shielded layer 23 by pressing according to a presser ring 32. A second cylindrical part 42 of a rubber plug 30 is conductively connected to a shielded shell 16 with adhesion, and thus the shielded shell 16 is conductively connected to the shielded layer 23 via the rubber plug 40. A shielded connector is attained water-proof by closing a wire insertion entrance 18 with a third cylindrical part 43 of the rubber plug 40. The shielded layer 23 is conductively connected to the shielded shell 16 and the wire insertion hole is closed by one rubber plug 40 to thereby decrease the number of conventional parts than that of conventional one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield connector in which a rubber plug is fitted to an electric wire insertion opening of a connector housing.

[0002]

2. Description of the Related Art Conventionally, as an example of this type of shielded connector, one disclosed in Japanese Patent Application Laid-Open No. Hei 10-144403 is known. This is, as shown in FIG.
A cylindrical shield shell 2 is provided inside the connector housing 1, and a terminal portion of the shielded electric wire 3 is accommodated in a position surrounded by the shield shell 2. Then, the shield layer 3A of the shielded electric wire 3 is
And the shield shell 2 were connected.

[0003]

However, in the above-mentioned conventional shielded connector, the connector housing 1 is not provided.
In order to cover the electric wire insertion port 1A,
The rubber stopper 6 and the rubber stopper 7 are separately provided, and the number of parts is increased. The present invention has been made in view of the above circumstances, and has as its object to provide a shielded connector having a small number of components.

[0004]

Means, actions and effects for solving the problem.
The shielded connector according to the invention of the present invention, in the connector housing, a housing portion for housing the terminal portion of the shielded wire to which the terminal fitting is fixed, and disposed behind the wire insertion opening of the connector housing that opens to the rear end surface, A shield shell surrounding the end portion of the shielded wire, electrically connecting the shield layer of the shielded wire and the shield shell exposed at the end portion, and connecting the wire insertion port with a cylindrical rubber plug inserted through the shielded wire. In the blocked shield connector,
The rubber stopper is formed of conductive rubber, and has first to third cylinders arranged side by side in the axial direction. The first cylinder has a metal pressing ring pressed against the outer surface thereof and pressed against the shield layer. The second tubular portion is fitted and tightly fitted to the shield shell, and the third tubular portion is fitted and closely fitted to the wire insertion opening.

According to the present invention, the rubber plug is formed of conductive rubber, and the first cylindrical portion of the rubber plug is pressed against the shield layer by the pressing ring, while the second cylindrical portion is formed on the inner surface of the shield shell. The shield shell is electrically connected to the shield layer via the rubber plug.
In addition, the wire insertion port of the shield connector is
It is closed by the cylindrical part to achieve waterproofing. As described above, in the shielded connector of the present invention, the conductive connection between the shield layer and the shield shell and the closing of the wire insertion hole are performed by one rubber plug, so that the number of components can be reduced as compared with the conventional connector. .

According to the second aspect of the present invention, in the first aspect, the exposed portion of the shield layer is folded back so as to cover a distal end portion of the outer coating of the shielded wire, and the outer portion of the shielded wire is exposed outside the exposed portion. The first cylindrical portion of the rubber plug is fitted to the rubber plug, and the rubber plug and the shield layer are electrically connected.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. A cylindrical housing portion 11 is provided in a connector housing 10 (hereinafter, simply referred to as “housing 10”) provided in the shielded connector of the present embodiment. The accommodating portion 11 has a structure in which the small diameter portion 12 and the large diameter portion 13 are arranged in the axial direction, their ends are overlapped inside and outside, and a plurality of circumferential portions are connected by a communication wall 14 (FIG. 1). Shows the cross section of the two connecting walls 14). Then, the terminal portion of the shielded electric wire 20 having the terminal fitting 25 fixed to the tip is inserted into the accommodating portion 11 from the large-diameter portion 13 side, and the lance 15 provided at the back of the small-diameter portion 12 is connected to the terminal fitting 25 And the shielded electric wire 20 is prevented from falling out of the housing portion 11.

In a gap between the small diameter portion 12 and the large diameter portion 13, a shield shell 1 formed by bending a metal plate into a cylindrical shape.
6 is inserted and assembled. A plurality of cutout grooves 17 are formed in the shield shell 16 from the front end to an intermediate portion, and the communication wall 14 is inserted to the depth of the cutout grooves 17. The outer surface of the part 12 is covered. The rear end of the shield shell 16 is located at a position deeper than the wire insertion port 18 opened to the rear end surface of the housing 10 in the large diameter portion 13.

On the other hand, the shielded electric wire 20 is formed by covering the outside of the core wire 21 with an inner insulating layer 22, covering the outside with a shield layer 23 woven from a thin metal wire, and further covering the outside with an outer covering 24. The core wire 21, the inner insulating layer 22, and the shield layer 23 are exposed stepwise from the tip side.

The exposed core wire 21 of the shielded electric wire 20
The barrel 26 of the terminal fitting 25 described above is crimped, and a locking hole 27A that engages with the lance 15 penetrates through the bottom wall of the box-shaped connecting portion 27 provided on the terminal fitting 25. Is formed. Outer sheath 2 of shielded electric wire 20
A metal reinforcing ring 30 is fitted on the outer surface of the distal end of 4, and the exposed portion of the shield layer 23 is folded back toward the base end to cover the outside of the reinforcing ring 30.

A cylindrical rubber plug 40 is fitted on the outer coating 24 of the shielded electric wire 20. This rubber stopper 4
Reference numeral 0 is formed of conductive rubber, and includes first to third cylindrical portions 41, 42, and 43 arranged in the axial direction from the left side in FIG. The first cylindrical portion 41 is formed so as to be loosely fitted inside the shield shell 16 and to be fitted in close contact with the outer surface of the exposed portion of the shield layer 23. A metal holding ring 32 is crimped. Thus, the first cylindrical portion 41 is sandwiched between the press ring 32 and the reinforcing ring 30 together with the shield layer 23. In addition, a flange 41A is formed to protrude outward from a peripheral edge at the tip of the first cylindrical portion 41.

The second cylindrical portion 42 is formed so as to fit in tight contact with the inner peripheral surface of the shield shell 16 and the outer peripheral surface of the outer sheath 24 of the shielded electric wire 20. Also, the second
A pair of lips 42A is provided on the outer peripheral surface of the cylindrical portion 42. The third cylindrical portion 43 is formed so as to be tightly fitted to the inner peripheral surface of the wire insertion port 18 of the housing 10 and the outer peripheral surface of the outer sheath 24. Also, the third
A pair of lips 43A is provided on the outer peripheral surface of the cylindrical portion 43.

Next, the operation of this embodiment will be described. When the shielded electric wire 20 is pushed into the housing portion 11 from the electric wire insertion opening 18 opened to the rear end of the housing 10, the first rubber plug 40 fitted to the shielded electric wire 20 is pressed.
The tubular portion 41 and the second tubular portion 42 enter the housing portion 11, and the lip 43 </ b> A provided on the third tubular portion 43 comes into contact with the opening edge of the wire insertion port 18. When the shielded electric wire 20 is strongly pushed in this state, the lip 43A of the third cylindrical portion 43 is crushed, and the third cylindrical portion 43 is pressed into the inside of the electric wire insertion port 18, thereby waterproofing the electric wire insertion port 18. When the shielded electric wire 20 is further pushed in, the lip 4
2A is in contact with the rear opening edge of the shield shell 16. When the shielded electric wire 20 is further pushed in, the second cylindrical portion 42
Of the shield shell 16 is brought into close contact with the inner surface of the shield shell 16 to be electrically connected. here,
The first cylindrical portion 41 of the rubber plug 40 is sandwiched between the reinforcing ring 30 and the pressing ring 32 together with the shield layer 13 and is electrically connected to the shield layer 13. The shield layer 13 and the shield shell 16 are electrically connected to each other via the second cylindrical portion 42.

Then, the shielded electric wire 20 is
, The lance 15 engages with the locking hole 27A of the terminal fitting 25, and the shielded electric wire 20 is prevented from falling into the housing portion 11 (see FIG. 1). Here, the rubber stopper 40
Is fixed by being pressed to the shield layer 23 by the pressing ring 32.
There is no need to provide a separate rubber stopper. In addition, since the flange 41A provided on the first cylindrical portion 41 and the holding ring 32 are engaged in the axial direction of the shielded electric wire 20, the rubber stopper 40 is provided.
Has a large retaining force.

As described above, in the shielded connector of the present embodiment, one rubber plug 40 conducts the conductive connection between the shield layer 23 and the shield shell 16 and closes the electric wire insertion hole, and is conventionally required. Since the rubber stopper 40 is prevented from falling into the housing portion 11 without providing the rubber stopper holder, the number of parts can be reduced as compared with the conventional one.

<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-described embodiment, the reinforcing ring 30 is provided inside the shield layer 23, but the rubber plug 40 is pressed against the shield layer 23 only by the pressing ring 32 without the reinforcing ring 30. Is also good. (2) In the above embodiment, the shield layer 23 is covered with the outer coating 2.
Although the configuration has been folded back to the fourth side, the configuration may be such that the first cylindrical portion 41 of the rubber plug 40 is brought into close contact with the shield layer 23 without being folded back.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a shielded connector according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a conventional shielded connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing 11 ... Housing part 16 ... Shield shell 18 ... Electric wire insertion port 20 ... Shield electric wire 23 ... Shield layer 24 ... Outer coating 25 ... Terminal fitting 32 ... Holding ring 40 ... Rubber plug 41 ... 1st cylindrical part 42 ... First 2 tube portion 43 ... 3rd tube portion

Claims (2)

[Claims] A connector housing for accommodating a terminal portion of a shielded wire to which a terminal fitting is fixed; and a connector housing, wherein the shield is disposed behind a wire insertion opening of the connector housing that opens to a rear end face. A shield shell surrounding the end portion of the electric wire, electrically connecting the shield layer and the shield shell of the shielded wire exposed at the end portion, and a cylindrical rubber plug inserted into the shielded wire. In a shielded connector that closes an electric wire insertion port, the rubber stopper is formed of conductive rubber, and is provided with first to third cylindrical portions arranged in the axial direction, and the first cylindrical portion is made of metal on an outer surface. The press ring is pressed and pressed against the shield layer, the second tubular portion is fitted and closely attached to the shield shell, and the third tubular portion is fitted to the wire insertion port. Shielded connector being characterized in that the combined and adhesion. 2. An exposed portion of the shield layer is folded back so as to cover a tip portion of an outer coating of the shielded wire, and the first cylindrical portion of the rubber plug fits outside the exposed portion of the shielded wire. The shielded connector according to claim 1, wherein the shielded connector is provided.