JP2000036362A - Shield connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify connection of a electric shield wire with a flat terminal or shell connecting terminal to a shield shell of square cylindrical form. SOLUTION: Angle-shaped resilient tabs 65 are installed toward inward from the oversurface and undersurface of the backmost part of a square cylindrical shield shell 60 provided in such a way as covering a electric shield wire 30 to be inserted into a housing 1, and the shell connecting part 52 of a shell connection terminal 50 is pinched so that electric connections are generated. With the electric shield wire 30, the shell connection terminal 50 and a flat male terminal 40 are connected one after another. Because the shell connection part 52 is formed in a ring shape and does not have inserting direction for the tabs 65, there is no need to take into consideration the connecting position in the circumferential direction of the shell connection terminal 50 when the flat terminal 40 is to be connected, and it is possible to simplify the connecting works.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielded connector having improved terminal treatment of a shielded electric wire.

[0002]

2. Description of the Related Art Conventionally, a shield connector described in Japanese Patent Application Laid-Open No. 6-260246 is known. As shown in FIG. 8, the shield connector is provided with a cylindrical shield shell c so as to cover the terminal accommodating chamber b in the housing a. A flat terminal g crimped to a core wire e of a shielded electric wire d can be accommodated in the terminal accommodating room b,
A shell connection portion i provided at a shell connection terminal h connected to the braided wire f of the shielded electric wire d is provided on the shield shell c.
Is shielded by the contact of the core wire e inside and outside the housing a. As shown in FIG. 9, a plurality of elastic contact pieces j are provided at a shell connecting portion i of the shell connecting terminal h, and the open end k is formed to be expanded to be elastically deformable. ing.

[0003]

The elastic contact piece j provided at the shell connecting portion i has a size restriction of the shell connecting portion i. The elastic force could not be increased by making j larger than the constraint. Further, the shielded electric wire d is transported in a wound state before being connected to the shielded connector. However, when the shielded electric wire d is wound, the open end protruding outside the shell connection portion h. k may damage the surface of the shielded wire d.

Further, depending on the shape of the housing a, the shield shell c may be formed in a rectangular tube shape. In such a case, it is necessary to make the shape of the shell connection portion i square in order to maintain a good contact state with the shield shell c. However, the flat terminal g has an insertion direction with respect to the terminal accommodating chamber b, and the shell connection portion i of the shell connection terminal h has an insertion direction with respect to the rectangular cylindrical shield shell c. Will have. For this reason, when connecting the two terminals g and h to the shielded wire d, the other terminal is connected to the circumferentially connected position of one terminal connected first.
Since the connection position must be accurately adjusted, the connection work of the terminal to be attached later becomes complicated, and the work efficiency is not good. The present invention has been completed to solve the above problems.

[0005]

As a means for achieving the above object, the invention according to claim 1 is characterized in that a shield shell is provided in a housing, a core wire is connected to a terminal fitting, and a braided wire is provided. In a shielded connector in which a shell connection portion provided on the shell connection terminal of a shielded wire connected to the shell connection terminal is connected to the shield shell, the shell connection portion is formed in an annular shape, and The present invention is characterized in that an elastic tongue is provided on the inner periphery of the shield shell with which the shell connection portion comes into contact. According to a second aspect of the present invention, in the first aspect, the terminal fitting has a direction of insertion into the terminal accommodating chamber, and the shield shell is formed in a rectangular cylindrical shape. Has features.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the shell connecting portion is formed in an annular shape by crimping a U-shaped metal plate. It has features. The invention of claim 4 is claim 1
The invention according to any one of claims 1 to 3, is characterized in that a pair of the elastic tongues is provided on opposing surfaces in the rectangular shell-shaped shield shell.

[0007]

<Advantage and Effect of the Invention><Invention of claim 1> In the conventional structure in which the elastic contact piece is provided on the shell connecting portion side, the size of the elastic contact piece is limited due to the limitation of the size of the shell connecting portion. On the other hand, in the present invention, since the elastic tongue is provided on the shield shell side, the elastic tongue can be set relatively large, the elastic tongue has a large elastic force, and the shell connection is more stably performed. Part can be held. Further, in the conventional structure, the elastic contact piece provided in the shell connection portion has an open end protruding outward, whereas in the present invention, it is necessary to provide an elastic contact portion in the shell connection portion. Because the open end is not formed unlike the conventional structure, the surface of the shielded wire is not easily damaged even when the shielded wire is wound for transportation or the like before connecting the shielded wire to the shielded connector. Have been.

<Invention of Claim 2> When the shape of the shield shell is a rectangular tube, the shape of the shell connection terminal can be an annular one instead of the conventional square shape, and the angle of the shell connection part can be changed. The direction of insertion into the cylindrical shield shell can be eliminated. Thereby, when connecting the terminal fitting having the insertion direction to the terminal accommodating chamber in the housing and the shell connection terminal to the shielded electric wire, regardless of the circumferential connection position of the previously connected terminal, the other terminal is connected. Can be easily connected to each other.

<Invention of Claim 3> After the shielded wire with the braided wire exposed is placed on the bottom of the U-shaped shell connection portion, the shell connection portion is crimped by a jig or the like so that the shell connection portion is braided. Can be easily connected to the shell connecting portion. <Invention of Claim 4> Since the shell connection portions can be elastically held from the opposing surfaces in the rectangular tubular shield shell, the contact pressure against the shell connection portions can be further increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. This embodiment shows a case where the present invention is applied to a male shield connector. As shown in FIGS. 1 and 2, this shield connector includes a rectangular tube shield shell 60 in a male connector housing 1 (hereinafter referred to as a housing) formed in a rectangular tube shape.

The housing 1 is formed as a double cylinder structure in which an inner cylinder 3 is integrally formed of a synthetic resin material inside an outer cylinder 2. The inner cylindrical portion 3 is located at a substantially central portion of the housing 1 in the front-rear (left-right) direction, and a support portion 4 provided at a front end portion is connected to the outer cylindrical portion 2.
A rectangular tube shield shell 60, which will be described in detail later, is attached between the outer tube portion 2 and the inner tube portion 3, and a terminal housing chamber 5 capable of housing the flat male terminal 40 is provided inside the inner tube portion 3. Is provided. The terminal accommodating chamber 5 is horizontally divided into three chambers with a side wall 6 interposed therebetween, and each of the chambers has a substantially rectangular cross-sectional shape, and lances 7 project from the lower surface on the front end side. Have been. A bending space 8 is provided below each lance 7, and each lance 7 is elastically deformable into the lower bending space 8 by a flat male terminal 40 inserted into the terminal accommodating chamber 5. .

A fitting recess 9 into which a female housing (not shown) can be fitted is formed at the front (right side) of the inner cylindrical portion 3. A front retainer 20 is provided from the front of the fitting recess 9.
Can be attached. A flexure restricting piece 21 is provided on the rear surface of the front retainer 20, and is inserted into the flexure space 8 to regulate the flexural deformation of the lance 7. A rib 22 is provided to assist the fitting with the housing on the side.

Behind (left side of) the inner cylindrical portion 3, a terminal accommodating chamber 5 is provided.
And a partition plate 1 formed so as to protrude rearward from the inner cylindrical portion 3.
1 divides the chamber into three chambers in the same manner as the terminal housing chamber 5. An opening 12 is provided at the rear of the shell connection terminal accommodating chamber 10 so as to open to the outside of the housing 1.
Here, a collective rubber plug 23 provided with a press-in hole 24 into which three shielded electric wires 30 can be press-fitted as shown in FIG. 4 is fitted. Further, from the rear of the opening 12, a back retainer 25 is put on the outer surface of the housing 1 so as to close the opening 12. The back retainer 25 is provided with an insertion hole 26 for inserting the shielded electric wire 30 and an engagement hole 27, and the engagement hole 27 is provided on an upper and lower portion of the housing 1. 13 is retained on the outer surface of the housing 1.

As shown in FIG. 5, a shielded electric wire 30 connected to the shielded connector has a core 31 formed of an insulating layer 3.
The outer periphery of the insulating layer 32 is covered with a braided wire 33 formed by weaving a conductive metal wire, and an insulating coating 34 is further provided on the outer periphery. This shielded electric wire 30 has two types of terminals 4, a flat male terminal 40 and a shell connection terminal 50.
0 and 50 are connected.

As shown in FIG. 6, the flat male terminal 40 has a tab 42 formed in front of a main body 41 provided with a locking groove for locking the lance 7 of the housing 1 and a tab 42 formed in the rear. A fastening portion 43 is formed. The flat male terminal 40 is connected to the core wire 31 by the caulking portion 43 being caulked to the exposed core wire 31 by peeling off the insulating layer 32 of the shielded electric wire 30. Further, since the flat male terminal 40 has a flat shape, the flat male terminal 40 has a circumferential insertion direction with respect to the terminal receiving chamber 5 having a substantially rectangular cross section.

As shown in FIG. 5, the shell connection terminal 50 is formed by dividing a metal plate into two portions and forming U-shaped portions having different sizes. The smaller side of the two U-shaped portions is a braided wire connection. The larger side is the shell connection part 52.
These are communicated by the communication unit 53. The braided wire connecting portion 51 is attached to the braided wire 33 where the insulating coating 34 has been peeled off and exposed, and the shell connecting portion 52 is provided behind the braided wire connecting portion 51.
4 and each is formed in an annular shape by a jig (see FIG. 6). Also, the braided wire 33
And the shell connection part 52 are electrically connected by a communication part 53.

Here, the structure of the rectangular tube shield shell 60 will be described in detail. The rectangular tube shield shell 60 is shown in FIG.
As shown in (1), a metal plate having conductivity is formed in a rectangular tube shape.

The fitting portion 61 provided at the front end of the rectangular tube shield shell 60 is disposed so as to pass through the support portion 4 and protrude into the front fitting recess 9 when attached to the housing 1. As described above, insertion grooves 62 are formed at six locations. Protrusions 63 are provided at a plurality of places at the tip end of the fitting portion 61 by punching out, and the contact pressure when the fitting portion 61 is fitted to the shield shell provided on the female housing is increased. It is supposed to be. Slightly behind the fitting portion 61, locking pieces 64 are formed in a cantilever shape from the front toward the inside at two locations on the upper and lower surfaces, and are attached to the inner cylindrical portion 3 when mounted in the housing 1. It is adapted to be locked by the provided locking portion 14 (see FIG. 1).

A plurality of elastic tongues 65 are provided on the inner periphery of the rear end portion of the rectangular tube shield shell 60. The elastic tongue piece 65 is formed by folding an extended piece formed to extend rearward from the rear end edge of the rectangular tube shield shell 60 to the inside of the rectangular tube shield shell 60. The end 67 is arranged at a distance from the inner peripheral surface, and the elastic tongue 65 is elastically deformable.
Further, the elastic tongue piece 65 is arranged at the rear end portion of the shell connection terminal accommodating chamber 10 in the housing 1. In addition, from the inner peripheral surface of the portion covered by the elastic tongue piece 65, a restricting piece 68 is formed by being cut out, and is formed at a distance from the central portion 66 of the elastic tongue piece 65. Excessive bending deformation of the piece 65 can be restricted.

The three elastic tongue pieces 65 having such a shape are provided side by side on the lower surface of the rectangular tube shield shell 60, and three are similarly arranged on the upper surface which is the opposing surface of the lower surface. It is provided in. At this time, the width between the central portions 66 of the upper and lower elastic tongues 65 is set to be smaller than the width of the shell connection portion 52 of the shell connection terminal 50 (see FIG. 3).

The present embodiment has the above-described structure. Next, an assembling procedure will be described. First, as shown in FIG. 4, the shielded electric wire 30 is inserted into the insertion hole 2 of the back retainer 25.
6 and the press-fit hole 24 of the rubber plug 23, the insulating layer 32 and the insulating cover 34 are removed, and the shell connection terminal 50 is removed.
And the flat male terminal 40 are sequentially attached.

To attach the shell connection terminal 50, as shown in FIG. 5, the portion of the braided wire 33 of the shielded electric wire 30 is attached to the bottom of the braided wire connection portion 51 of the shell connection terminal 50, and the portion of the insulation coating 34 is attached to the shell. It is located at the bottom of the connection part 52, respectively. Then, the braided wire connecting portion 51 and the shell connecting portion 52 are crimped using a jig. This allows
As shown in FIG. 6, the U-shaped braided wire connecting portion 5
1 and the shell connecting portion 52 are formed in an annular shape,
It can be easily attached to the braided wire 33 and the insulating coating 34, respectively.

Subsequently, the flat male terminal 40 is attached to the shielded electric wire 30 by caulking the crimped portion 43 of the flat male terminal 40 to the core wire 31 of the shielded electric wire 30. At this time, the shell connecting portion 52 attached in front of the flat male terminal 40 is formed in an annular shape, and
The connection work of the flat male terminal 40 should be performed without concern for the connection position of the shell connection terminal 50 in the circumferential direction because the circumferential directionality is not a problem when connecting to the elastic tongue piece 65 of 0. Can be.

Then, as shown in FIG. 3, the shielded electric wire 30 to which both terminals are attached is inserted into the housing 1 to which the rectangular tubular shield shell 60 is attached. The flat male terminal 40 is inserted from the opening 12 on the rear end side of the housing 1 into the terminal accommodating chamber 5 while adjusting the insertion direction in the circumferential direction,
When the tab 42 projects into the fitting recess 9 and the lance 7 of the housing 1 is locked in the locking groove of the main body 41, the insertion of the shielded electric wire 30 is completed.

Here, the shell connecting portion 52 of the shell connecting terminal 50 is provided on the upper and lower surfaces of the rectangular cylindrical shield shell 60 so as to be opposed to each other when the shell connecting portion 52 is inserted into the shell connecting terminal accommodating chamber 10 through the opening 12. The elastic tongues 65 are brought into contact with the central portion 66 of the elastic tongues 65 and are elastically deformed in the vertical direction. Thereby, the shell connection part 52
It penetrates between the central parts 66 and is pinched. At this time, the shell connection portion 52 is stably held by the elastic force of the two elastic tongue pieces 65, and a stable connection state is maintained. The braided wire 33 of the shielded electric wire 30 is electrically connected to the rectangular cylindrical shield shell 60 via the shell connection terminal 50, so that the core wire 31 is securely shielded even in the housing 1.

After the shielded electric wire 30 is inserted into the housing 1, as shown in FIG. 2, the collective rubber plug 23, the back retainer 25, and the front retainer 20 are respectively attached to the housing 1 to complete the assembly of the shield connector. You.

As described above, according to the present embodiment,
Since the elastic tongue piece 65 is provided on the rectangular tube shield shell 60,
An annular shell connection portion 52 of a shell connection terminal 50 for connecting the rectangular tube shield shell 60 and the braided wire 33 of the shielded electric wire 30 can be used, and the insertion direction of the shell connection portion 52 into the rectangular tube shield shell 60 can be used. Sex can be eliminated. Accordingly, when the shell connection terminal 50 and the flat male terminal 40 are sequentially connected to the shielded electric wire 30, it is not necessary to consider the circumferential connection position of the shell connection terminal 50 when connecting the flat male terminal 40, Connection work can be simplified. The connection order at this time is reversed, so that the flat male terminal 40 is connected to the shell connection terminal 50.
The same effect can be obtained even when the connection is made.

The size of the elastic tongue 65 provided on the rectangular cylindrical shield shell 60 can be set to any size as long as the insertion of the shielded electric wire 30 is not hindered. A force can be given, and the shell connection part 52 can be held in a more stable state. Even when the shielded electric wire 30 is wound with the shell connection terminal 50 attached, the shell connection portion 52
Is formed so as not to have an outwardly protruding portion, so that the insulating coating 34 of the shielded electric wire 30 is hardly damaged.

Further, since the elastic tongue pieces 65 are provided so as to be opposed to the upper and lower surfaces of the rectangular cylindrical shield shell 60, the contact pressure with respect to the shell connecting portion 52 is increased, and the shell connecting portion 52 is securely held. And stable contact can be obtained even when vibration or impact is applied.

<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 male shield connector is shown, but the present invention can of course be applied to the female shield connector. (2) The present invention can be applied to a case where the elastic tongue is provided only on one side. (3) The present invention can also be applied to a case where an elastic tongue piece is provided on one of the opposed inner surfaces of a rectangular cylindrical shield shell and a contact piece which does not elastically deform is provided on the other.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the shield connector after assembly.

FIG. 3 is a partially cutaway side view showing an operation of inserting a shielded electric wire into a housing.

FIG. 4 is a perspective view showing a state where a shielded electric wire is inserted into a back retainer and a collective rubber stopper.

FIG. 5 is a perspective view showing an operation of placing a shielded electric wire on a shell connection terminal.

FIG. 6 is a perspective view of a shielded electric wire to which a shell connection terminal and a flat male terminal are attached.

FIG. 7 is a partially cutaway perspective view of a rectangular cylindrical shield shell.

FIG. 8 is a partially cutaway side view of a conventional shield connector.

FIG. 9 is a perspective view of a shell connection terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Housing 5 ... Terminal accommodating chamber 30 ... Shield electric wire 31 ... Core wire 33 ... Braided wire 40 ... Flat male terminal (terminal fitting) 43 ... Caulking part 50 ... Shell connection terminal 51 ... Braided wire connection part 52 ... Shell connection part Reference numeral 60: square tubular shield shell (shield shell) 65: elastic tongue 66: central portion 67: end portion

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Miyazaki 1-7-10 Kikuzumi, Minami-ku, Nagoya City, Aichi Prefecture Inside Harness Research Institute Co., Ltd. No. 7-10 Inside Harness Research Institute

Claims (4)

[Claims] A shield connection is provided in the shell connection terminal of a shielded wire in which a shield wire is provided in a housing, a core wire is connected to a terminal fitting, and a braided wire is connected to the shell connection terminal. Is connected to the shield shell, wherein the shell connection portion is formed in an annular shape,
An elastic tongue for contacting the shell connection portion is provided on an inner periphery of the shield shell. 2. The shielded connector according to claim 1, wherein the terminal fitting has a direction of insertion into the terminal accommodating chamber, and the shield shell is formed in a rectangular tube shape. 3. The shielded connector according to claim 1, wherein the shell connection portion is formed in an end-like annular shape by caulking a U-shaped metal plate. 4. The resilient tongue according to claim 1, wherein a pair of said elastic tongues are provided on opposing surfaces in said rectangular shell-shaped shield shell. Shield connector.