JPH10144404A - Shield connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely hold a conduction state of a shield tube and a shield layer. SOLUTION: This constitution is formed such that a shield layer 13 and a metal shell 30 of a shield wire W are conduction-connected through a connecting member 40. The connecting member 40 is constituted by providing a retaining receiving part 41 formed in tubular shape to be insertable inside the shield layer 13 and a retaining piece 42 connecting one end part to this retaining receiving part 41 and the other end part into press-contact with an internal peripheral surface of the metal shell 30. In this way, after inserting the retaining receiving part 41 inside the shield layer 13, when the other end part of the retaining piece 42 is deflected, by lever action, the shield layer 13 is firmly interposed between the retaining receiving part 41 and the retaining piece 42, in this way, regardless of decreasing in rigidity of an insulating layer 12, a conduction state of the shield layer 13 and the metal shell 30 can be held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield connector to which a shielded electric wire is connected.

[0002]

2. Description of the Related Art Conventionally, a shield connector disclosed in Japanese Patent Application Laid-Open No. 7-245153 has been known. Hereinafter, description will be made with reference to FIG. In FIG. 10, W
Is a shielded electric wire, and the end of the shielded wire is stripped to expose the shield layer 2 composed of the core wire 1 and the braided wire. A male terminal fitting 3 is connected to the core wire 1. Further, a cylindrical metal shell 4 (a shield tube of the present invention) is inserted so as to cover them, and a rear end portion (a left end portion in FIG. 10) is crimped to the shield layer 2. As a result, the shield layer 2 and the metal shell 4 are electrically connected to each other, and the male terminal fitting 3 is shielded. Although not shown, the male terminal fitting 3 and the metal shell 4 are accommodated in a housing.

[0003]

However, since the insulating layer between the core and the shield layer is made of a synthetic resin material, if the core is heated to a high temperature, the rigidity is reduced and the core is easily deformed. Therefore, if the configuration is such that the metal shell is merely caulked to the shield layer as described above, the adhesion between the shield layer and the metal shell is impaired due to a decrease in rigidity,
There is a possibility that the conduction state becomes unstable. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shield connector capable of reliably maintaining a conductive state between a shield cylinder and a shield layer.

[0004]

According to a first aspect of the present invention, there is provided a shielded connector in which a shield layer is coated on the outside of a core wire and the end portion of the shielded wire is insulated and coated on the outside. A shield tube is provided so as to surround the core wire protruding toward the distal end side from the shield layer, and a shield is provided by electrically connecting the shield tube and the shield layer. A connection member for conducting connection between the shield layer and the shield tube, the connection member being outside the insulating coating of the core wire and receiving member inserted inside the shield layer; One end is connected to the receiving member, and the lever is used as a fulcrum at this connection point and the other end is used as a point of action to push the shield layer between the receiving member and the pressing member. Characterized in being constituted by a pressing member.

[0005] The shield connector of claim 2 is claim 1.
In the above-described configuration, a feature is provided in which an engaging convex portion and an engaging concave portion that can be engaged with each other are provided in a portion facing the root portion of the pressing member and a root portion of the receiving member.

According to a third aspect of the present invention, there is provided a shielded connector.
Alternatively, in the device according to claim 2, the receiving member is formed in a cylindrical shape along the inner peripheral surface of the shield layer, the pressing member is integrally formed facing the receiving member, and the shielding layers are provided on both the pressing members. It is characterized in that a locking portion and a locking receiving portion are provided, which are engaged with each other in a state where they are held down and hold both holding members in that state.

According to a fourth aspect of the present invention, there is provided a shielded connector.
In the above description, the receiving member is formed in a cylindrical shape along the inner peripheral surface of the shield layer, and the pressing member is formed by cutting and raising the receiving member.

[0008]

According to the first aspect of the present invention, in order to electrically connect the shield cylinder and the shield layer, the receiving member is inserted inside the shield layer. Further, the pressing member is bent by leverage. Then, the shield layer is strongly pressed against the receiving member at the base of the pressing member. Thereby, the shield layer and the connection member are conducted,
Thus, the shield layer and the shield cylinder are electrically connected.

Therefore, since the shield layer is sandwiched between the receiving member and the holding member, even if the rigidity of the insulating layer is reduced, the contact state between the shield layer and the connection member is maintained, so that the shield layer is in contact with the shield layer. The conduction state with the shield cylinder can be reliably maintained. Moreover, since the shield layer can be pressed against the receiving member using the leverage action,
The pressing work becomes very easy.

According to the second aspect of the present invention, the base portion of the pressing member and the receiving member opposed thereto are provided with the engaging projection and the engaging recess that can be engaged with each other. Is pressed to the receiving member, the shield layer is reliably sandwiched between the engaging projections and the engaging recesses, and the contact between the shield layer and the connection member is further ensured.

According to the third aspect of the present invention, when the shield layer is pressed against the receiving member by the pressing members formed opposite to each other, the locking portions and the locking receiving portions provided on the both pressing members are mutually reciprocated. Engagement and both holding members are held in that state. Therefore, after pressing the shield layer, the pressing member does not return to the original position carelessly, and the contact state can be more reliably maintained. In addition, since the holding member and the receiving member are integrally formed, the number of parts can be reduced, and an advantageous effect can be achieved in terms of parts management and economics such as die cost.

According to the fourth aspect of the present invention, since the pressing member is cut and raised from the cylindrical receiving member, it has an effect that molding is easy.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of a shield connector according to the present invention will be described with reference to FIGS. FIG. 5 is a side sectional view showing the entirety of the present embodiment. As shown in FIG.
Is a male connector, and a terminal of the shielded electric wire W is connected to the shield connector M.

First, the shielded electric wire W will be described.
As shown in the upper right of FIG. 1, the shielded electric wire W is provided by providing an insulating layer 12 outside a core wire 11 made of an electrically conductive material and knitting an electrically conductive thin metal wire around the outer periphery of the insulating layer 12. Providing the formed shield layer 13,
Further, the outer periphery of the shield layer 13 is covered with an electrically insulating outer skin 14. The end portion of the shielded electric wire W is in a state where the outer layer 14 is stripped off to expose the shield layer 13, and the insulating layer 12 is further stripped off at the tip side to expose the core wire 11. .

Next, the shield connector M will be described. As shown in FIG. 5, the shield connector M is used to electrically connect the housing 20, the male terminal fitting 60, the metal shell 30 (corresponding to the shield cylinder of the present invention), and the metal shell 30 and the shield layer 13. Connecting member 40
And so on. The housing 20 is made of an electrically insulating synthetic resin material, and the front half (the left half in FIG. 5) is a hood 21 for accommodating a female connector (not shown). In addition, a lock arm 27 that can be bent inward is formed on the upper surface of the hood portion 21, and is provided with a locking projection 27A that can engage with the female connector.

The rear half (the right half in FIG. 5) of the housing 20 is a cavity 22 for assembling the male terminal fitting 60. The cavity 22 has a round hole shape, and further has a small cylinder 23 therein.
Support arms 28 projecting from the inner peripheral surface at 90 ° intervals
Are arranged coaxially with the cavity 22 through the center. The male terminal fitting 60 is accommodated in the small cylinder 23 with its tip protruding into the hood 21. Further, a metal shell 30 is fitted to the outside of the small cylinder 23.

The rear side of the cavity 22 is open and serves as an assembling opening 22A for assembling the male terminal fitting 60, the metal shell 30, and the like. Furthermore, this assembling port 22A
Is slightly projecting rearward to form a rubber stopper accommodating portion 24. The rubber plug accommodating portion 24 has a rubber plug 25 attached to the shielded electric wire W.
The rubber plug holding lid 26 is fitted therein, whereby the inside of the cavity 22 is sealed with the shielded electric wire W pulled out.

The male terminal fitting 60 is formed in a rod shape, and its rear portion serves as a caulking portion 61 for accommodating and caulking the core wire 11 of the shielded electric wire W. The distal end is a connecting portion 62 that is inserted into a female terminal fitting (not shown). A flange portion 63 is formed on the outer peripheral surface at a substantially central portion with respect to the length direction. To engage with each other. Further, the flange portion 6
3, a ring mounting groove (not denoted by a reference numeral) is formed, and an engaging ring 64 is fitted therein. The engagement of the locking ring 64 with the locking portion 29 protruding from the lower side of the inner wall surface of the small cylinder 23 prevents the male terminal fitting 60 from coming off.

The metal shell 30 is formed by bending a conductive metal plate into a cylindrical shape. This metal shell 3
0 is an assembly port 22A formed on the rear side of the cavity 22.
Assembled through. The metal shell 30 has cutout grooves 31 corresponding to the positions of the support arms 28 in order to avoid interference with the support arms 28 during assembly.
Are cut out from the tip edge along the length direction. As shown in FIG. 1, the connection member 40 is formed by bending a conductive metal plate material, and a pressing receiving portion 41 (corresponding to a receiving member of the present invention) inserted inside the shield layer 13. Holder 41 for holding shield layer 13
And a pressing piece 42 (corresponding to a pressing member of the present invention) that presses against the pressing member 42.

The press receiving portion 41 is formed in a cylindrical shape, and its outer diameter is set to be substantially equal to the inner diameter of the shield layer 13. The length of the shield layer 13 is set substantially equal to the length of the exposed shield layer 13. The pressing piece 42 is formed in an arc shape along the outer peripheral surface of the pressing receiving portion 41, and is disposed to face up and down with the pressing receiving portion 41 interposed therebetween. The distal ends of the pressing pieces 42 are integrally connected to the distal ends of the pressing receiving portions 41 via the connecting portions 43. The rear end of the holding piece 42 is slightly curved outward, and forms a contact portion 44 with the metal shell 30. In a normal state, both holding pieces 42 are in a state of being opened rearward (the state shown in FIG. 2), and when the metal shell 30 is inserted, the rear end is pressed inward (in the direction of the arrow in FIG. 2). Both holding pieces 42 can be bent and deformed inward from the connecting portion 43.

As shown in FIG. 2, an engagement convex portion 45 is formed on the inner surface of the base portion of each of the pressing pieces 42, and the engaging convex portion 45 is formed on the pressing receiving portion 41 opposed thereto. Is formed with an engagement concave portion 46 which can be engaged with.
Further, in the bent state, the left and right ends of the lower holding piece 42 overlap the left and right ends of the upper holding piece 42, and the left and right ends of the upper holding piece 42 Are formed with two locking projections 47 (corresponding to the locking portions of the present invention). (Corresponding to the locking receiving portion). Then, both holding pieces 42 are held in a bent state by the engagement of the two.

Next, the operation of assembling the connector will be described. To assemble the connector, the male terminal fitting 60, the metal shell 30, and the like are assembled to the end of the shielded electric wire W in advance. First, the rubber stopper pressing lid 26 and the rubber stopper 25 are sequentially inserted into the end of the shielded electric wire W. continue,
The connection member 40 is fitted into the shielded electric wire W. At this time, the press receiving portion 41 is made to sink between the insulating layer 12 and the shield layer 13. After that, the core wire 11 that is inserted and protrudes through the press receiving portion 41 is accommodated in the caulking portion 61 of the male terminal fitting 60, and the caulking portion 61 is caulked (see FIG. 2).

When the caulking operation of the male terminal fitting 60 is completed, the metal shell 30 is inserted from the tip end of the male terminal fitting 60.
Is inserted and fitted to the outside of the connection member 40. Then, the rear end of each holding piece 42 is pressed inward (in the direction of the arrow in FIG. 2) with the insertion of the metal shell 30, and the holding piece 42 bends inward from the connecting portion 43. As a result, the shield layer 13 is strongly pressed against the holding portion 41 at the base of each holding piece 42 (see FIG. 4). At this time, the engaging projection 45 and the engaging recess 46 engage with each other, and
Is bitten (see FIG. 3). That is, the shield layer 13 is strongly pressed against the holding portion 41 by leverage with the connecting portion 43 as a fulcrum and the contact portion 44 as an operating point.

Then, the male terminal fitting 60 connected to the end of the shielded electric wire W is connected to the mounting port 22 of the housing 20.
A is inserted into the cavity 22 through A. Here, the male terminal fitting 60 is inserted into the inside of the small cylinder 23, and is assembled with its tip protruding into the hood 21. Further, the metal shell 30 is fitted to the outside of the small cylinder 23 and the support arm 28 is
Is pushed forward so as to engage with the notch groove 31.
Further, the rubber stopper 25 and the rubber stopper pressing lid 26 inserted into the shielded electric wire W are moved into the rubber stopper accommodating portion 24, and the rubber stopper 25 is pressed by the rubber stopper pressing lid 26 (see FIG. 5). Thereby, the assembling work of the connector M is completed.

With the above configuration, the present embodiment has the following advantages. Since the shield layer 13 can be sandwiched between the holding portion 41 and the holding piece 42, even if the rigidity of the insulating layer 12 is reduced and the insulating layer 12 is easily deformed, the contact state between the shield layer 13 and the connecting member 40 can be maintained. Thus, the conduction state between the shield layer 13 and the metal shell 30 can be reliably maintained. In addition, since the shield layer 13 can be pressed against the pressing receiving portion 41 by utilizing the leverage action, the pressing operation is very easy.

The base portion of the pressing piece 42 and the pressing receiving portion 41 opposed thereto are provided with engaging projections 4 which can be engaged with each other.
5 and the engaging concave portion 46 are provided, so that when the shield layer 13 is pressed against the pressing receiving portion 41, the shield layer 13 is bitten by the engaging convex portion 45 and the engaging concave portion 46, and is connected to the shield layer 13. The contact with the member 40 can be made more reliable.

Since the retaining projections 47 and the retaining holes 48 are provided, the pressing pieces 42 are held in a pressed state. After the shield layer 13 is pressed, the pressing pieces 42 are inadvertently removed. The contact state can be more reliably maintained without returning to the position. Since the pressing piece 42 and the pressing receiving portion 41 are integrally formed, the number of parts can be reduced, and the effect of economical aspects such as parts management and mold cost can be obtained.

<Second Embodiment> FIGS. 6 to 8 show a second embodiment of the shield connector according to the present invention.
This will be described with reference to FIG. In the present embodiment, the connection member 70 is formed by cutting and raising the pressing piece 72 from the pressing receiving portion 71.

That is, as shown in FIG.
Is formed in a cylindrical shape as in the first embodiment. And
At both upper and lower sides of the press receiving portion 71, press pieces 72
Are cut and raised diagonally toward the rear. The rear end of the metal shell 73 is squeezed, and the size of the squeezed portion 74 is slightly smaller than the distance between the rear ends of the pressing pieces 72 in a substantially natural state. The other parts are the same as in the first embodiment, and therefore the same parts are denoted by the same reference numerals and description thereof will be omitted.

In order to electrically connect the shield layer 13 and the metal shell 73, the holding portion 71 is sunk into the shield layer 13 as in the first embodiment. At this time, the shield layer 13 is pushed until the front end of the shield layer 13 comes into contact with the base of the holding piece 72. And the metal shell 73
After fitting, the rear ends of both holding pieces 72 are metal shells 73.
Is pressed inward with the insertion of, and both holding pieces 72 bend from the base portion. As a result, both the holding pieces 72 are pressed into the squeezed portion 74 of the metal shell 73, and at the same time, are pressed into the opening after the shield layer 13 cuts and raises the holding piece 72 by the base of the holding piece 72 ( 7 and 8). Therefore, the shield layer 13 and the metal shell 73 are electrically connected via the connection member 70.

As described above, also in the present embodiment, the press receiving portion 7
Since the shield layer can be interposed between the first member 1 and the holding piece 72, the conduction state between the shield layer 13 and the metal shell 73 can be reliably maintained regardless of the decrease in the rigidity of the insulating layer 12 as in the first embodiment. In the present embodiment, the connecting member 70 is formed by cutting and raising the pressing piece 72 from the pressing receiving portion 71 formed in a cylindrical shape. .

<Third Embodiment> In the first embodiment, the rubber stopper 25 is accommodated in the rubber stopper accommodating portion 24 and is pressed down by the rubber stopper pressing lid 26.
May be configured as shown in FIG. That is, as shown in the second embodiment, the rear end of the metal shell 80 is squeezed to form a squeezed portion 81, and the rear end is further extended rearward to form a rubber stopper caulking portion 82 there. I do. The other parts are the same as those of the second embodiment, and the same parts are denoted by the same reference numerals and description thereof will be omitted.

Thus, the rubber stopper 25 is connected to the metal shell 80.
Is fixed by caulking to a rubber stopper caulking portion 82 which is a rear end portion. Then, in this state, the rubber stopper housing portion 24 (see FIG. 5)
The rubber stopper 25 does not come out even if the rubber stopper pressing cover 26 is not provided unlike the first embodiment. Therefore, since the rubber stopper cover 26 does not need to be provided, the number of parts can be reduced.

The present invention is not limited to the above-described embodiment, but can be modified as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In each of the above embodiments, an example in which the present invention is applied to the male-side shield connector M is shown, but the present invention may be applied to a female-side shield connector.

(2) In each of the above embodiments, the holding piece 4
The holding members 2 and 72 are formed integrally with the holding portions 41 and 71. However, the holding piece is formed separately from the holding portion, and the receiving member formed as a separate member is provided with a hook hole, and the holding hole is provided there. The tip of the piece may be hooked. Also in this case, the holding piece is pressed by the metal shell at the rear end and bent from the hooked portion with the receiving member, and in effect can press the shield layer by leverage, thereby ensuring a reliable conduction state and facilitating the pressing work. Has effects such as sex.

(3) In the above-described first embodiment, the engaging projections 45 and the engaging recesses 46, and the locking projections 47 and the locking holes 48 are formed on the holding piece 42, respectively. Alternatively, only one of them may be formed.

(4) In the first embodiment, the rear end portion, which is the point of action for bending the holding piece 42, is the contact portion 44 with the metal shell 30 as it is. It may be formed so as to protrude from the other part or the tip of the press receiving portion separately from the press piece. Others
The present invention can be implemented with various modifications without departing from the scope.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a shielded electric wire, a connection member, and the like according to a first embodiment.

FIG. 2 is a side sectional view showing a state before insertion of a metal shell in the embodiment.

FIG. 3 is a side sectional view showing a state after insertion of a metal shell in the embodiment.

FIG. 4 is a cross-sectional view taken along line AA in FIG. 3 of the same embodiment.

FIG. 5 is a side sectional view showing the entire shield connector in the embodiment.

FIG. 6 is a perspective view illustrating a shielded electric wire, a connection member, and the like according to a second embodiment.

FIG. 7 is a side sectional view showing a state after insertion of the metal shell in the embodiment.

FIG. 8 is a cross-sectional view taken along the line BB in FIG. 7 of the same embodiment.

FIG. 9 is a side sectional view showing a metal shell and the like in a third embodiment.

FIG. 10 is a side sectional view showing a state in which a metal shell in a conventional example is caulked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Core wire 13 ... Shield layer 20 ... Housing 30, 80 ... Metal shell (shield cylinder) 40, 70 ... Connection member 41, 71 ... Pressing receiving part (receiving member) 42, 72 ... Pressing piece (pressing member) 45 ... Mating part 46 ... engaging concave part 47 ... locking projection (locking part) 48 ... locking hole (locking receiving part) M ... shield connector W ... shielded electric wire

Claims (4)

[Claims] A shield is provided on the outside of a core wire and a housing capable of accommodating a terminal portion of a shielded electric wire having the outside insulated is provided. A shield tube is arranged so as to surround the core wire protruding to the side, and in a configuration in which the core wire is shielded by electrically connecting the shield tube and the shield layer, the shield layer and the shield tube are connected to each other. Providing a connecting member for conducting connection, the connecting member being outside the insulating coating of the core wire;
A receiving member inserted inside the shield layer; and a conductive member, one end of which is connected to the receiving member, and the shield layer formed by leverage using the connection point as a fulcrum and the other end as an operation point. And a holding member for sandwiching between the receiving member and the receiving member. 2. An engaging protrusion and an engaging recess which can be engaged with each other at a root portion of said holding member and a portion of said receiving member facing said root portion. A shielded connector characterized by being provided with. 3. The receiving member according to claim 1, wherein the receiving member is formed in a cylindrical shape along an inner peripheral surface of the shield layer, and the pressing member is integrally opposed to the receiving member. The holding member is provided with a locking portion and a locking receiving portion which are engaged with each other in a state where the shield layer is pressed and hold the both holding members in that state. Characterized shield connector. 4. The device according to claim 1, wherein the receiving member is formed in a cylindrical shape along an inner peripheral surface of the shield layer,
The shield connector is characterized in that the holding member is cut and raised from the receiving member.