JP3067547B2 - Shield connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a shield connector and a terminal fitting.

[0002]

2. Description of the Related Art Conventionally, as this type of shielded connector, there is known a shielded connector disclosed in Japanese Utility Model Laid-Open No. 4-23081 shown in FIG. In FIG. 13, a cover 1 serving as a shield electrode is formed by bending a single metal plate material into a substantially cylindrical shape, and is connected to a cylindrical cylindrical portion 2 and one open end of the cylindrical portion 2. And a clamp portion 3 bent in a U-shape so as to open along the axial direction of the cylindrical portion 2. The body 4 is formed as a hollow cylindrical resin body, and has an axial through hole 4a at the center. In addition, the cover 1 is formed to have an outer diameter that can be inserted from an opening on the side where the clamp portion 3 is not connected, and is formed to be about half the length of the cover 1.

A pin 5 having a crimping portion 5a formed entirely in a pin shape and having a flat plate bent at one end into a substantially U-shape.
Can be inserted through the through hole 4a of the body 4 to penetrate. Resin cylindrical cap (casing)
6 is a large-diameter opening 6a into which the cover 1 can be inserted at one end.
And a cable (shielded wire) 7 at the other end.
Has a small-diameter opening 6b into which a can be inserted. The cable 7 is formed by laminating coaxially, is provided with a conductor 7a at the center, and is covered with an extension coating 7b around the conductor 7a.
The periphery is covered with a braided wire 7c, and the outer periphery is covered with an insulating sheath 7d.

[0004] In order to assemble such a shielded connector, the following is performed. The tip of the cable 7 is peeled off stepwise, and the conductor 7 at the tip is passed through the opening 6 b of the cap 6.
a is connected by crimping at the crimping portion 5 a of the pin 5. The body 4 is inserted all the way into the cylindrical portion 2 of the cover 1, and the pin 5 is inserted into the through hole 4 a of the body 4 from the side of the clamp portion 3. At this time, the stripping length is adjusted so that the braided wire 7c of the cable 7 enters the clamp portion 3. When the clamp portion 3 is pressed so as to wind the cable 7, the cover 1 is fixed to the end of the cable 7. When the cap 6 is gripped and the cable 7 is pulled, the cover 1 is pulled into the cap 6 and assembled. Is completed.

[0005]

In the above-mentioned conventional shielded connector, the clamp portion 3 of the cover 1 directly winds and connects the cable 7, so that one end has a large diameter and the other end has a small diameter. ing. One end of the cap 6 for accommodating the same has a large diameter and the other end has a small diameter. The small diameter cable 7 must be pulled back from the small diameter side. In other words, there is a problem that the work is inefficient because the operator pulls back after moving forward. The present invention has been made in view of the above problems, and an object of the present invention is to provide a shielded connector capable of improving workability of assembly.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, the periphery of a terminal fitting housed therein is covered with a shield electrode, and the outer periphery of the insulation-coated inner wire is braided. In a shielded connector in which the inner wire of a shielded wire whose outer periphery is insulated and connected to the terminal fitting and the braided wire is connected to the shield electrode, the shielded wire is formed in a tubular shape by a conductive member. A shield electrode through which the shielded wire can be inserted, a notch is formed on the open end peripheral wall on the side where the shielded wire is inserted toward the other end to form a plurality of strips, A cylindrical casing for holding the electrode and holding the terminal fitting therein, and an opening on the side of the terminal fitting formed in a cylindrical shape penetrated by the shielded electric wire; In the shield electrode, at the position corresponding to the strip piece in the shield electrode, a tapered pressing surface whose opening diameter becomes smaller toward the opening on the opposite side is formed, and when the outer surface of the shield electrode is covered with the pressing surface, the same strip member and a ring member to abut on its outer peripheral surface by forcibly bent toward the shield wire, the casing
Has a cylindrical opening inside to hold the shield electrode
And the ring member is inserted through the opening.
The ring member is inserted from the opening.
Then, the opening end of the shield electrode becomes the ring member.
Is guided so as to be inserted into the open end .

[0007] The invention according to claim 2 is based on claim 1.
The shield connector according to claim 1, wherein the ring member
Is an inside that can cover the end of the casing at one end.
Diameter and the inner peripheral surface is the outer peripheral surface of the casing.
A seal member that can be tightly adhered to the
On the inner surface of the shield wire
With a seal member that can adhere
You.

[0008]

According to the first aspect of the present invention, a plurality of strips are formed by forming notches toward the other end of the shield electrode at the opening end peripheral wall on the side where the shielded wire is inserted. The shield wire is inserted after the ring member has been formed in advance. When the ring member is moved closer to the side of the shield electrode, the end of the ring member covers the outer periphery of the end of the shield electrode, and the tapered holding surface comes into contact with the outside of the strip. Since the opening diameter of the pressing surface decreases toward the opening on the opposite side of the ring member, the strip is pressed into the pressing surface and curved inward. When the braided wire of the shielded electric wire is exposed, the tip of the strip that curves inward is close to the braided wire and abuts to conduct. This place
If you insert the ring member into the opening of the casing,
The open end of the shield electrode is naturally within the open end of the ring member.
It is inserted.

Furthermore, in the invention according to Claim 2 as constructed above, the open end of Ke pacing while covering a ring member, so close contact with the watertight at the seal member, a water ingress from the outside To prevent.

[0010]

As described above, according to the present invention, since the shield electrode and the shielded electric wire are separately assembled, the shield electrode and the shielded electric wire are assembled after passing through the casing as in the prior art. It can be assembled without complicated hands such as pulling back at the end. In particular, since the spring plate piece is curved when the ring member is pushed in, there is no projection at the beginning of the shield electrode, and the shielded wire connected to the terminal metal can be easily inserted. it can. Only
Also, it is necessary to guide the insertion of the ring member by the casing.
Therefore, positioning is easy and work is easy.

[0011] The present invention according to claim 2,
The anti-aqueous can be easily realized.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a shield connector according to an embodiment of the present invention. The shield connector of the present embodiment has a substantially cylindrical housing (casing).
10, a shield electrode 20, a cap 30, and a rubber seal 40 are mounted through one opening, and a shielded electric wire 80 having a rubber plug 60 and a ring member 70 together with a terminal fitting 50 is inserted through the other opening. ing.

As shown in FIGS. 2 and 3, a housing (casing) 10 is penetrated in the axial direction, and a front portion has a double structure in which a central inner cylindrical portion 11 is covered by a hood portion 12. . The inner cylindrical portion 11 has a terminal accommodating chamber 13 in which a female terminal metal fitting 50 can be inserted, and a mating terminal metal fitting in which a male terminal metal fitting can be inserted in front of the terminal accommodating chamber 13. A mouth 13a is formed, and a lance 14 having a cantilevered arm shape and a wedge-shaped projection 14a protruding toward the inside of the terminal accommodating chamber 13 is formed on the bottom surface. At a position below the lance 14, there is provided a cut portion 15 formed by cutting from the front surface of the inner cylindrical portion 11 toward the back, and when the lance 14 is bent downward, the cut portion 15 is formed in the cut portion 15. enter in.

The rear end of the housing 10 is a terminal fitting insertion portion 16 which is largely open.
The communication walls 17a to 17d at regular intervals so that the rear end portion of the inner cylindrical portion 11 is held in a suspended state on the inner surface of the front end portion of the inner tube portion 6.
Are formed. Thus, shield electrode insertion holes 18a to 18d are formed continuously from the outer peripheral surface of the inner cylindrical portion 11 to the inner peripheral surface of the terminal fitting insertion portion 16. The four shield electrode insertion holes 18a to 18d form a circular through hole as a whole along the outer periphery of the inner cylindrical portion 11. In addition, a cylindrical waterproof seal wall 19a is formed on the rear end of the inner cylindrical portion 11 from the back wall of the hood portion 12 so as to cover a portion where the inner cylindrical portion 11 is suspended in the terminal fitting insertion portion 16.
The upper surface of the hood is provided with a flexible lock arm 19b that engages with and holds the mating connector when mated with the mating connector.

The shield electrode (shell) 20 is formed by bending a metal plate to have a cylindrical shape having an inner diameter corresponding to the outer diameter of the inner cylindrical portion 11, and is directed from the rear end side to the front end side as shown in FIG. Thus, four cuts 21 are formed and divided into four peripheral walls 20a. In addition to the notch 21, a notch 23 for further dividing the tip into three is formed in each peripheral wall 20a, and a narrow strip 24 is formed at the center in the width direction. The cuts 21 are formed so as to coincide with the widths and the intervals of the communication walls 17a to 17d. When the front end of the inner cylindrical portion 11 is inserted from the rear end side, the communication walls 17a to 17d are inserted into the cuts 21. Get in. When the communication walls 17a to 17d are inserted until they reach the tip of the cut 21, the rear end of the shield electrode 20 enters the terminal fitting insertion portion 16. In addition, a wedge-shaped locking claw 22 projecting toward the inside of the cut is formed near the back of each cut 21, and when the shield electrode 20 is inserted as far as described above, the locking claw 22 becomes Communication walls 17a to 17d
To prevent the shield electrode 20 from coming off. In addition, the shield electrode 20 is disposed substantially along the outer peripheral surface around the inner cylindrical portion 11, and is disposed along the inner peripheral surface of the terminal fitting insertion portion 16 in the terminal fitting insertion portion 16.

In the present embodiment, the rear end of the shield electrode 20 is divided into four pieces,
Although a to 17d are formed, the number can be increased or decreased as necessary. Also, corresponding to this, the strip 24
Can also be changed as appropriate. The shield electrode 20 is not necessarily required to be integral, and may be formed by dividing a cylinder for each peripheral wall 20a. The cap 30 is the inner cylinder 1
1 has a substantially cap shape capable of covering the front end.
A plate-like double locking piece 31 is formed to protrude from the inner bottom surface of the cap 30 and faces the notch 15 at the time of mounting. 15 is formed with a locking projection which can be engaged with the upper wall surface.
The cap 30 has an inner diameter that matches the outer diameter of the shield electrode 20, and can be attached to the distal end of the inner cylinder 11 to which the shield electrode 20 is attached. Also, four windows 33a to 33d are formed on the side surface at equal intervals, and the shield electrode 20 that covers the inner cylindrical portion 11 is exposed to the outside through the windows 33a to 33d. The window 33a
33d communicates with the front surface of the cap 30, and the shield electrode 20 is exposed from the front end to the side surface. The open end of the cap 30 is formed with a flange 34 whose diameter is increased in the radial direction.
4 has a slightly larger diameter than the end of the waterproof seal wall 19a. The flange 34 presses the front end thereof when the ring-shaped rubber seal 40 shown in FIG. 6 is attached to the waterproof seal wall 19a to prevent the rubber seal 40 from coming off. A mating terminal fitting insertion hole 35 into which a male terminal fitting can be inserted is also formed on the front surface of the cap 30, while the shield wire 80 is an internal wire in which a core wire as an internal conductor is covered with a resin insulator. The periphery of 81 is covered with a braided wire (shield wire) 82 as an external conductor, and the outermost periphery is covered with a resin 83, and a terminal fitting 50 is crimped to the tip.

The ring member 70 shown in FIG. 5, Sea inside
It is formed in a cylindrical shape having an outer diameter capable of inserting the shielded electric wire 80 and being insertable into the terminal fitting insertion portion 16. Four ridge-shaped projecting walls 71 are formed at equal intervals on the inner peripheral surface of the ring member 70, and the open end of each projecting wall 71 is gradually inclined toward the outer peripheral direction. The pressing surface 71a is formed. That is, the holding surface 71
“a” is an inclined surface formed on the front surface of the projecting wall 71 that gradually projects inward toward the opening on the opposite side, so that the opening diameter decreases toward the back side. The width of each protruding wall 71 is formed to be slightly smaller than the width of the strip 24 formed on the peripheral wall 20 a of the shield electrode 20.

An embodiment of the present invention will be described below with reference to the drawings. On the side of the housing 10, a rubber seal 40 is attached to the waterproof seal wall 19 a inside the hood portion 12, and the shield electrode 20 is covered over the outer periphery of the inner cylindrical portion 11 from the side of the cut 21. Communication walls 17a to 17d and cut 21
Then, the shield electrode 20 is pushed in until the communication walls 17 a to 17 d reach the deepest part of the cut 21. At this position, the front end of the shield electrode 20 is substantially flush with the front end of the inner cylindrical portion 11, and the locking claw 22 cuts into the side surface of the communication walls 17 a to 17 d to prevent the shield electrode 20 from coming off. I have. In the present embodiment, the locking claws 22 are fixed to the side surfaces of the communication walls 17a to 17d by digging into the side surfaces thereof. It may be locked when entering the terminal fitting insertion portion 16 through the holes 18a to 18d.

Next, the cap 30 is attached to the tip of the inner cylinder 11 and the shield electrode 20. The cap 30 is inserted such that the opening surface of the cap 30 faces the inner cylinder 11 so that the shield electrode 20 enters the inside of the cap 30. When the shield electrode 20 is covered, the double locking piece 31 enters into the cut portion 15 at the tip of the inner cylindrical portion 11 and is temporarily locked at a position before reaching below the lance 14. In this position, the double locking piece 31 is not inserted to the lower surface of the lance 14, and the lance 14 can bend downward. FIG. 6 shows this state. On the other hand, the shielded electric wire 80 is passed through the rubber stopper 60 and the ring member 70, and the core of the extension 81 is exposed from the distal end, the covering portion of the extension 81 is exposed, and then the braided wire 82 is formed. Stepwise peel the skin so that it is exposed, and attach the terminal fitting 5
0 is crimped. Then, the terminal fitting 50 is inserted from the terminal fitting insertion portion 16 side of the housing 10. When the terminal fitting 50 is inserted into the terminal accommodating chamber 13, the corner at the front end pushes down the projection 14 a of the lance 14. When the terminal fitting 50 is inserted to the deepest part, the opening (not shown) formed on the lower surface of the terminal fitting 50 is the same. The lance 14 returns to face the projection 14a. The lance 14 enters the notch 15 temporarily after being pushed down and returning.

Next, the ring member 70 is connected to the shielded electric wire 80.
, And inserted into the terminal fitting insertion portion 16 as shown in FIG. 8, a protruding wall 71 is formed on the inner peripheral wall surface of the ring member 70 corresponding to the strip 24 formed on the peripheral wall 20a of the shield electrode 20. The holding surface 71 a is inserted so that the tip of the holding surface 71 a covers the outside of the strip 24. As a result, as the ring member 70 is pushed in,
Is curved inward along the holding surface 71a, and the tip approaches the outer peripheral surface of the shielded wire 80. As described above, in the shielded electric wire 80, the braided wire 82 is stripped so as to be exposed, and as shown in FIG. It comes into electrical contact with the line 82.

As described above, the notch 23 is formed at the tip of the cylindrical shield electrode 20 to form the strip 24, and the shield electrode 20 is inserted from one side of the housing 10 and the shield wire 80 is inserted. The housing 1
0, and the ring member 70 into which the shielded electric wire 80 has been inserted is further covered over the strip piece 24, and the tapered contact surface 71a has the elongated strip piece 24 inside. The shielded wire 80 is brought into contact with the braided wire 82 exposed on the outer periphery of the shielded wire 80 to be electrically connected. Thereafter, the cap 30 is inserted all the way as shown in FIG. Then, the double locking piece 31 becomes the notch 15
The cap 30 advances to the inside and engages with the groove on the upper wall surface of the cutout 15 at the locking projection, so that the cap 30 is prevented from coming off. Since the cap 30 has such a large diameter as to cover the tip of the shield electrode 20, the cap electrode 30 is prevented from coming off in this way, so that the shield electrode 20 is prevented from coming off.

When the double locking piece 31 enters the notch 15, the lance 14 cannot be bent downward.
In order for the terminal fitting 50 to come off, it is not possible unless the lance 14 is once bent downward and the projection 14a is retracted. Therefore, the double locking piece 31 supports the lance 14 like a bolt in the cutout 15 in this manner, so that the terminal fitting 50 can be reliably prevented from coming off. Further, since the cap 30 is fixed, the flange 34 is fixed at the end of the waterproof seal wall 19a, so that when the rubber seal 40 tries to come out, it can be abutted to prevent the rubber seal 40 from coming off.

The shield connector having the above configuration has a cylindrical shield electrode whose front end is divided into four portions corresponding to the windows 33a to 33d, and a shield provided with a male terminal fitting held in the shield electrode. Connect the connector. The shield electrode is connected to the shield electrode 20 exposed through the windows 33a to 33d, and the male terminal fitting is connected to the female terminal fitting 50 held in the terminal accommodating chamber 13.
Connect with In the above-described embodiment, the insertion directions of the shield electrode 20 and the shield wire 80 are different. However, even when the shield electrodes 20 and the shield wires 80 are inserted from the same direction, the degree of freedom of assembly is improved by separately performing the insertion.

FIGS. 11 and 12 show another embodiment of the present invention. In the above-described embodiment, the ring member 70 is inserted into the terminal fitting insertion portion 16 of the housing 10.
Is inserted into the ring member 170.
At the end of the terminal fitting insertion portion 16 in the housing 110, a groove 110a is formed at a position corresponding to each strip piece 124 in the shield electrode 120, and the strip piece 12 is formed.
4 faces the outside of the housing 110. One end of the ring member 170 has a diameter into which the end of the housing 110 can be inserted.
And an O-ring 173a that is in close contact with the inner peripheral surface of the housing 110 and the outer peripheral surface of the housing 110. The other end has a diameter such that the shielded wire 180 can be substantially penetrated, and also has an O-ring 17 that similarly adheres to the outer circumferential surface of the shielded wire 180 and the inner circumferential surface of the ring member 170.
3b.

In the above configuration, the shielded electric wire 180 is passed through the ring member 170, and the tip is peeled off stepwise, and the terminal fitting 150 is crimp-connected to the extension 181. At this time, the O-ring 173b is the shielded electric wire 1
80 is in close contact with the outer peripheral surface in a watertight manner. Terminal fitting 1
50 is inserted into the terminal accommodating chamber 113 from the terminal fitting insertion portion 116 and is engaged with a predetermined position.
Move to 10 side. When the end of the housing 110 is inserted into the opening of the ring member 170, each protruding wall 171 enters each groove 110a, and the pressing surface 171a at the front end curves each strip 124 toward the shielded electric wire 180. It is brought into contact with the braided wire 182. At this time, the ring member 17
The O-ring 173a on the front end side at 0 has an inner peripheral surface closely contacting the outer peripheral surface of the housing 110. Therefore, the opening is provided at both sides of the ring member 170 to prevent water from entering the terminal fitting insertion portion 116.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of a housing in the shield connector.

FIG. 3 is a front view of a housing of the shield connector.

FIG. 4 is a sectional view of a shield electrode.

FIG. 5 is a sectional view of a ring member.

FIG. 6 is a sectional view of the shield connector.

FIG. 7 is a partial cross-sectional view of the shield connector in a process of inserting a ring member.

FIG. 8 is a partially cutaway perspective view of a shield electrode and a ring member.

FIG. 9 is a partial cross-sectional view of the shield connector in a state where a ring member is inserted.

FIG. 10 is a cross-sectional view of the shield connector.

FIG. 11 is a sectional view of a shield connector according to another embodiment in an assembling process.

FIG. 12 is a sectional view of a shielded connector according to another embodiment.

FIG. 13 is an exploded perspective view of a conventional shield connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Housing 20 ... Shield electrode 20a ... Peripheral wall 21 ... Cut 22 ... Locking claw 23 ... Cut 24 ... Strip piece 50 ... Terminal fitting 70 ... Ring member 71 ... Protrusion wall 71a ... Pressing surface 80 ... Shield wire 81 ... Extension line 82 ... braided wire 83 ... outer cover 110 ... housing 120 ... shield electrode 124 ... strip piece 150 ... terminal metal fittings 170 ... ring member 171 ... protruding wall 171a ... pressing surface 173a ... O-ring 173b ... O-ring 180 ... shielded electric wire 181 ... internal wire 182 ... braided wire 183 ... outer skin

Claims (2)

(57) [Claims] 1. A shielded wire in which the periphery of a terminal fitting housed therein is covered with a shield electrode, the outer periphery of an insulated covered inner wire is covered with a braided wire, and the outer periphery of the shielded wire is insulated and covered with the terminal. A shield connector connected to a metal fitting and connected to the shield electrode with the braided wire, the shield wire being formed into a tubular shape with a conductive member so that the shielded wire can be inserted therein, and the shield wire inserted side; A shield electrode having a plurality of strips formed by forming a notch toward the other end of the peripheral wall of the opening end, and a cylindrical casing holding the shield electrode and holding the terminal fitting inside thereof. The shield electrode is formed in a cylindrical shape penetrated by the shielded wire, and has an opening edge on the side of the terminal fitting opposite to a position corresponding to the strip in the shield electrode. Forming a tapered holding surface whose opening diameter decreases toward, and forcibly bending the same band plate piece toward the shielded wire at the holding surface when covering the outer periphery of the shield electrode. A ring member to be brought into contact with the outer peripheral surface, wherein the casing holds the shield electrode inside.
While having a cylindrical opening, the ring member,
The ring member is formed so that it can be inserted through the opening.
When inserted from the opening, the opening end of the shield electrode becomes
Guided to be inserted into the open end of the ring member.
Shield connector according to claim Rukoto. 2. The shield connector according to claim 1, wherein said ring member has an inner diameter capable of covering an end of said casing at one end and an inner peripheral surface of said ring member with respect to an outer peripheral surface of said casing. And a seal member capable of tightly contacting the outer peripheral surface of the shielded electric wire on the inner peripheral surface at the other end.