JP2005327627A - Connector for shielded electric wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a shielded electric wire preventing looseness of an inner conductor even in case a load is put on the wire. <P>SOLUTION: The inner conductor 2 caulked to core wires 91 of a coaxial cable 9 is housed in an insulation cover 3, the insulation cover 3 is inserted into and held by a housing part 41 of an outer conductor 4, and a shielding barrel 42 formed at a hind part of the housing part 41 is caulked to a shielding body 93 of the coaxial cable 9, and then, the outer conductor 4 is bent in right angles between the housing part 41 and the shielding barrel 42 to be finally housed in a female housing 5. With this, since the coaxial cable 9 pulled out of the outer conductor 4 is extended in almost right angles with the inner conductor 2, even if pulled toward a reverse side of a female connector 1, looseness of the inner conductor 2 in the insulation cover 3 can be avoided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a shielded wire connector connected to a shielded wire.

There has been a conventional technique related to a connector having a shielding function for connecting to a shielded electric wire (see, for example, Patent Document 1). In this conventional connector, an insulator including a plurality of inner conductors connected to the core wire of a coaxial cable is held in a shield cover formed of a conductive metal, and the shield cover is made of a synthetic resin material. In the housing. In the connector according to this prior art, when the cable pulled out from the housing is pulled with a large load in the opposite direction to the connector, there is a possibility that the inner conductor may rattle in the insulator. In order to prevent this, if a retainer for preventing the inner conductor from coming off is attached to the insulator, the insulator becomes large and the entire connector including the shield cover and the housing becomes enormous.
Japanese Utility Model Publication No. 5-23458 (FIG. 1)

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a shielded wire connector that prevents the inner conductor from rattling even when a load is applied to the wire.

  As means for achieving the above object, the invention of claim 1 is characterized in that the inner conductor connected to the core wire of the electric wire is accommodated in the insulator, and the insulator is inserted and held in the accommodating portion of the outer conductor. The shield barrel formed behind the housing portion is caulked to the shield body of the electric wire, and further, in the shielded wire connector in which the outer conductor is housed in the housing, the outer conductor is bent at a substantially right angle, The shielded wire connector is characterized in that the electric wire drawn out from the outer conductor extends substantially at a right angle to the inner conductor.

  The invention according to claim 2 is the shielded wire connector according to claim 1, wherein the outer conductor is bent between the housing portion and the shield barrel.

  The invention according to claim 3 is the shielded wire connector according to claim 1 or 2, wherein the outer conductor is bent after the shield barrel is caulked to the shield body.

  The invention according to claim 4 is characterized in that the housing has a retainer that closes the rear of the outer conductor after the outer conductor is accommodated. A connector was used.

<Invention of Claim 1>
By bending the outer conductor at a substantially right angle, the wire drawn from the outer conductor extends at a substantially right angle with respect to the inner conductor. The conductor is not pulled directly, and rattling in the insulator can be prevented.

<Invention of Claim 2>
Since the outer conductor is bent between the housing portion and the shield barrel, the axial length thereof can be shortened.

<Invention of Claim 3>
The outer conductor can be bent after the shield barrel is caulked to the shield body, so that the length from the housing part to the caulking part of the electric wire can be made accurate, and the inner conductor is prevented from rattling. In addition, it is possible to ensure a sufficient length of the electric wire against the pulling force.

<Invention of Claim 4>
Since the housing has a retainer that closes the rear of the outer conductor after the outer conductor is accommodated, the housing can prevent the electric wire from being pulled rearward, and further prevent rattling of the inner conductor in the insulator. it can.

  An embodiment of the present invention will be described with reference to FIGS. In the description, the left side of FIG. 17 is the front side of the female connector 1 (corresponding to the shielded wire connector of the present invention), and the right side is the front side of the male connector 7. FIG. 1 shows a part of the assembly process of the shielded wire connector 1 according to the present embodiment. The inner conductor 2 is formed of a conductive metal material, and as shown in FIGS. 1A and 1B, a fitting portion that fits forward with the male terminal 72 of the male connector 7 that is the mating connector. 21, each of which is constituted by a pair of barrel pieces on the rear side thereof, and a wire barrel 22 which is caulked to a core wire 91 of a coaxial cable 9 (corresponding to the electric wire of the present invention) which is a shielded electric wire, and an insulation which is caulked to an inner sheath 92. A ration barrel 23.

  The insulating cover 3 (corresponding to the insulator of the present invention) is integrally formed of a synthetic resin material in a substantially rectangular parallelepiped shape, and as shown in FIG. 10, three cavities in which the inner conductor 2 is accommodated are formed. 31 are juxtaposed. A terminal hole 32 into which the male terminal 72 enters is formed in the front wall of each cavity 31. As shown in FIG. 2, a deflectable lance 33 extends into each cavity 31, and this engages with a locking projection 24 formed on the lower surface of the inner conductor 2, thereby temporarily mounting the inner conductor 2. Lock. As shown in FIG. 2, a shield hole 34 through which the ground terminal 73 of the male connector 7 enters from the front is provided on the upper surface of the insulating cover 3, and a female housing 5 (housing of the present invention) described later is provided on the lower surface. The locking piece 53 (corresponding to 1) enters and a locking hole 35 for preventing the locking piece 53 is provided (shown in FIG. 2). Further, a flange portion 36 is provided at the front end portion of the insulating cover 3 so as to protrude in the outer peripheral direction.

  The outer conductor 4 is integrally formed of a conductive metal material, and as shown in FIG. 1C, in order to insert and hold the above-described insulating cover 3 in the front, the outer conductor 4 has a cylindrical shape with a rectangular cross section. The housing 41 is formed, and a shield barrel 42 that is caulked to a shield body 93 for shielding the core 91 is provided at the rear end. A pair of connecting pieces 43 are formed in front of the shield barrel 42 so as to face each other, and a rectangular engagement hole 43a penetrates through these tip portions. On the other hand, projecting portions 41 a that engage with the engaging holes 43 a are formed on both side surfaces of the housing portion 41, and a bending engagement piece 44 projects downward from the ceiling surface of the housing portion 41. . In addition, the retaining piece 53 of the housing 5 described above is inserted into the lower surface of the housing portion 41 to form a holding hole 45 for preventing the retaining portion 45 (shown in FIG. 2). A pair of terminal pieces 46 that are in contact with and electrically connected to the ground terminal 73 of the male connector 7 are provided so as to protrude downward (shown in FIG. 4).

  As shown in FIGS. 1C and 1D, the insulating cover 3 is inserted into the housing portion 41 of the outer conductor 4 from the front until the flange portion 36 comes into contact with the distal end portion of the outer conductor 4. The plurality of inner conductors 2 connected to the core wire 91 of the coaxial cable 9 are inserted and accommodated in the respective cavities 31 of the insulating cover 3 from the rear. The insulating cover 3 inserted into the outer conductor 4 is temporarily locked by engaging an engagement hole (not shown) formed on the upper surface with the engagement piece 44 of the outer conductor 4. As shown in FIG. 1 (E), after the shield barrel 42 of the outer conductor 4 is caulked to the shield body 93 that has been peeled over the outer covering 94, as shown in FIG. Between the shield barrel 42, the outer conductor 4 is bent at a substantially right angle. By bending the outer conductor 4, the engagement hole 43 a on the connecting piece 43 is fitted with the protrusion 41 a of the accommodating portion 41, and the bent shape of the outer conductor 4 is maintained. In this state, the coaxial cable 9 drawn out from the outer conductor 4 extends substantially at right angles to the inner conductor 2, and even if pulled downward in FIG. Since the direction from the direction 3 does not match, rattling in the cavity 31 is prevented.

  As shown in FIG. 2, the female housing 5 is integrally formed of a synthetic resin material and includes a holding portion 51, and a housing hole 51 a for housing the outer conductor 4 including the insulating cover 3 therein. have. A guide portion 52 for guiding the bent coaxial cable 9 is formed at the lower end portion of the holding portion 51. From the lower surface of the housing hole 51a, as described above, the locking piece 53 that engages with the locking hole 35 of the insulating cover 3 and the holding hole 45 of the outer conductor 4 and prevents the locking is protruding. . A lock piece 54 is formed on the upper surface of the female housing 5 so as to engage with the lock projection 71 c of the male connector 7 and hold the fitting of the male and female connectors 1 and 7. The lock piece 54 is provided with an engagement projection 54a that engages with the lock projection 71c, and a release portion 54b that releases the engagement between the lock projection 71c and the engagement projection 54a when pressed.

  Furthermore, four retainer holding portions 55 a that engage with a back retainer 6 described later are provided at the rear end portion of the outer peripheral surface of the holding portion 51. Further, two retainer holding portions 55b that engage with the back retainer 6 are also formed on the outer peripheral surface of the guide portion 52 (shown in FIGS. 3 to 5). As shown in FIGS. 4 and 5, the retainer holding portions 55 a and 55 b protrude from the outer peripheral surface of the female housing 5, and an inclined surface is provided at the rear portion thereof. The outer conductor 4 is accommodated by being inserted into the accommodation hole 51a of the female housing 5 from the rear.

  The back retainer 6 (corresponding to the retainer of the present invention) is integrally formed of a synthetic resin material, and has a flat plate-like closing portion 61 formed so as to close the holding portion 51 of the female housing 5 and the rear of the guide portion 52. 4 hook parts 62a erected forward on the periphery thereof, and two hook parts 62b erected on the lower side thereof (see FIGS. 2 and 7). Each of the hook portions 62a and 62b is formed in a loop shape so as to have a rectangular through hole therein, and engages with the retainer holding portions 55a and 55b of the female housing 5 described above. After housing the outer conductor 4 including the insulating cover 3 from the rear in the housing hole 51a of the female housing 5, the back retainer 6 is mounted on the female housing 5 from the back so as to close the rear. The hook parts 62a and 62b of the back retainer 6 are bent outwardly and ride on the inclined surfaces of the retainer holding parts 55a and 55b, then return to their shapes and engage with the retainer holding parts 55a and 55b. Completed (shown in FIGS. 6 to 9).

  As shown in FIGS. 14 to 17, the male connector 7 includes a male housing 71, a male terminal 72 and a ground terminal 73 fixed to the male housing 71. The male housing 71 is integrally formed of a synthetic resin material, and a hood portion 71b extends forward from the rear wall 71a to surround the male terminal 72 and the ground terminal 73. A lock protrusion 71c that engages with the engagement protrusion 54a of the female connector 1 described above is formed on the upper surface of the tip of the hood 71b. Also, a pair of mounting bosses 71d protrude from the outer peripheral side surface of the male housing 71, and mounting holes 71e penetrate vertically therethrough. The three male terminals 72 and the one ground terminal 73 are each formed in a substantially L shape from a conductive metal material, and are press-fitted into the rear wall 71a of the male housing 71 from the rear. The male connector 7 is fixed by inserting a mounting bolt (not shown) through the mounting hole 71e and tightening it to an electronic circuit board or the like, whereby the male terminal 72 and the ground terminal 73 are electrically connected to the signal pattern and ground pattern of the electronic circuit board. Connected.

  As shown in FIGS. 17 and 18, the male terminal 72 of the male connector 7 is inserted into each terminal hole 32 of the insulating cover 3 by causing the female connector 1 to enter the hood portion 71 b of the male connector 7 from the front thereof. It enters and engages with the inner conductor 2 of the female connector 1, and the ground terminal 73 of the male connector 7 enters the shield section 34 of the insulating cover 3 and engages with the terminal piece 46 of the outer conductor 4. As a result, the core wire 91 of the coaxial cable 9 is electrically connected to the male terminal 72, and the shield body 93 is grounded via the ground terminal 73. Further, when the male and female connectors 1 and 7 are fitted to each other, the engagement protrusion 54a of the female housing 5 and the lock protrusion 71c of the female housing 71 are engaged, so that the engagement state of both is maintained. Yes.

  In the present embodiment, by bending the outer conductor 4 at a substantially right angle, the coaxial cable 9 drawn out from the outer conductor 4 extends at a substantially right angle with respect to the inner conductor 2. Even when pulled to the opposite side of the connector 1, the inner conductor 2 is not pulled directly in its pulling direction, and rattling in the insulating cover 3 can be prevented. Further, since the outer conductor 4 is bent between the accommodating portion 41 and the shield barrel 42, the length in the axial direction (left-right direction in FIG. 17) can be shortened. Further, the outer conductor 4 is configured to be bent after the shield barrel 42 is caulked to the shield body 93, so that the length from the housing portion 41 of the coaxial cable 9 to the caulking portion of the shield body 93 is made accurate. In order to prevent rattling of the inner conductor 2, it is possible to ensure a sufficient length of the coaxial cable 9 against the pulling force. The female housing 5 is configured to have a back retainer 6 that closes the rear of the outer conductor 4 after the outer conductor 4 is received, thereby preventing the coaxial cable 9 from being pulled rearward of the female connector 1. The rattling in the insulating cover 3 can be further prevented.

<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. Various modifications can be made without departing from the scope of the invention.
(1) The bending angle in bending the outer conductor may be slightly increased or decreased from a right angle as long as the inner conductor can be prevented from rattling.
(2) The retainer may be provided integrally with the housing.

Side view (A) in which inner conductor and coaxial cable are juxtaposed according to this embodiment, side view (B) showing connection of coaxial cable to inner conductor, state before housing inner conductor and insulating cover in outer conductor Side view (C) showing, side view (D) showing a state where the inner conductor and the insulating cover are accommodated in the outer conductor, side view (E) showing a state where the shield barrel is caulked on the shield body, and the outer conductor is bent It is a side view (F) which shows a state. It is sectional drawing which shows the state before accommodating an outer conductor in a female housing. FIG. 3 is a front view of FIG. 2. FIG. 4 is a top view of FIG. 3. FIG. 4 is a bottom view of FIG. 3. It is a side view of a female connector. It is a rear view of a female connector. It is a top view of a female connector. It is a bottom view of a female connector. It is a horizontal sectional view of an insulating cover. It is a front view of an outer conductor. It is a rear view of an outer conductor. It is a bottom view of an outer conductor. It is a rear view of a male connector. It is a front view of a male connector. It is a top view of a male connector. It is sectional drawing which shows the state before fitting a male and female connector. It is sectional drawing which shows the state which fitted the male and female connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Female connector 2 ... Inner conductor 3 ... Insulation cover 4 ... Outer conductor 5 ... Female housing 6 ... Back retainer 9 ... Coaxial cable 41 ... Housing part 42 ... Shield barrel 91 ... Core wire 93 ... Shield body

Claims (4)

An inner conductor connected to the core of the electric wire is accommodated in an insulator, the insulator is inserted and held in an accommodating portion of the outer conductor, and a shield barrel formed at the rear of the accommodating portion is disposed in the shield of the electric wire In addition, in the shielded wire connector in which the outer conductor is housed in the housing,
A shielded wire connector, wherein the outer conductor is bent at a substantially right angle so that the electric wire drawn from the outer conductor extends at a substantially right angle with respect to the inner conductor. The shielded electric wire connector according to claim 1, wherein the outer conductor is bent between the housing portion and the shield barrel. 3. The shielded wire connector according to claim 1, wherein the outer conductor is bent after the shield barrel is crimped to the shield body. 4. The shielded wire connector according to claim 1, wherein the housing includes a retainer that closes a rear portion of the outer conductor after the outer conductor is received. 5.

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