JPS6364274A - Electrical connector with shielded metal fitting - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrical connector with shield fittings, which is comprised of a plug connector and a receptacle connector, each having shield fittings that are electrically connected to each other when mated together. be.

BACKGROUND OF THE INVENTION An example of this type of electrical connector with a shield fitting is disclosed in Japanese Utility Model Application Publication No. 60-67679. In the connector with a shielded case disclosed in this publication, the plug (5) has a metal case or a plastic case whose surface is plated with metal, and this plastic case consists of an upper case (51) and a lower case. (52), and the housing in which contacts are arranged is divided into an upper case (51) and a lower case (52).
2) is sandwiched between. On the other hand, the receptacle (7
) has contacts arranged in a recess 72 of a plastic housing (71), and a shield case (8) formed by metal pressing is fitted into the inner wall surface of the recess (72).

Problems to be Solved by the Invention The conventional connector with a shield case described above had the following problems.

(1) For plugs, the metal case or plastic case with metal-plated surface is divided into upper and lower parts, and the structure is such that it covers the tip of the insulating housing, so the tip of the plug is made that much larger. Ta.

(2) The shield case of the receptacle is formed by bending the sides on both sides of the ceiling, so there is no bottom at a position corresponding to the ceiling, so there is a risk of radio waves leaking from the bottom. be.

(3) In addition, since the receptacle shield case is not box-shaped, the surrounding wall forming the recess of the receptacle housing must be thick enough to have sufficient mechanical strength. It is impossible to

(4) Furthermore, the tip of the opening of the receptacle is
Since there is a shield only on the ceiling and on both sides, a person's finger, which is charged with static electricity, can easily enter the opening.
Those fingers could touch the tips of the contacts, and the static electricity could damage the circuits on the circuit board through the contacts.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrical connector with a shield fitting that can solve the conventional problems as described above.

Means for Solving the Problems According to the present invention, in the electrical connector with shield fittings, which includes a plug connector and a receptacle connector, each having a shield fitting that is electrically connected to each other when mated with each other, the plug connector The plug insulating housing includes a plug insulating housing in which the contact is disposed, and a metal fitting receiving groove is formed at the tip of the plug insulating housing, substantially surrounding the outer periphery of the contact and opening at the tip surface, A shield metal fitting is inserted into the metal fitting receiving groove from the distal end surface, the receptacle connector includes a receptacle insulation housing in which a contact is disposed, and the receptacle insulation housing includes the plug insulation of the plug connector. A fitting cavity is formed to receive the tip of the housing, and the tip of the receptacle insulating housing has a metal fitting receiving groove that substantially surrounds the outer periphery of the fitting cavity and is open to the tip surface. A shield metal fitting is inserted into the metal fitting receiving groove from the distal end surface.

Embodiments Next, the present invention will be described in more detail with reference to embodiments of the present invention based on the accompanying drawings.

FIG. 1 is an exploded perspective view of an arrangement of parts showing an electrical connector with a shield fitting as an embodiment of the present invention. The electrical connector with shield fitting of this example is a plug connector 1.
00 and a receptacle connector 200. FIG. 2 is a plan view of the plug connector 100 in an assembled state, and FIG. 3 is a plan view of the receptacle connector 200 in an assembled state.

As shown in FIG. 1, the plug connector 100 mainly includes a plug insulating housing 110 and a pair of plug cases 140A and 140B divided into two parts (j
I'm looking forward to it. The plug insulating housing 110 is made of an insulating material such as plastic, and has a plurality of contacts 12.
0 is set.

That is, the plug insulating housing 110 has, at its tip,
It has a contact accommodating hole 111 for arranging and accommodating a female contact, and has a lead wire accommodating groove 112 in communication with the contact accommodating hole 111 at the rear thereof.

Furthermore, a protrusion R114 is formed at the rear portion of the plug insulating housing 110 so as to be sandwiched between the pair of plug cases 140A and 140B. Cases 140Δ and 1
A recess 115 is provided into which the protrusions 141A and 141B (see FIG. 4) provided on the recess 40B are inserted. The female contact 120 has a contact portion 121 for contacting the contact portion 221 of the male contact 220 of the receptacle connector 200 at the front thereof, and a crimp connection portion 122 for crimp and caulking the lead wire 11 of the cable 10 at the rear thereof. ing.

According to the present invention, a contact receiving hole 11 in which a female contact 120 is disposed is provided at the tip of the plug insulating housing 110.
A substantially U-shaped metal fitting receiving groove 113 that substantially surrounds the entire outer periphery of the metal fitting receiving groove 113 is formed. This U-shaped metal fitting receiving groove 113 is open on the front end surface of the plug insulating housing 110, and a corresponding U-shaped shielding metal fitting 130 is inserted into this metal fitting receiving groove 113 from the front end surface. It is now set up. This shield fitting 130 is formed by press punching a metal plate, and includes an enveloping part 131 shaped like a mouth, and an enclosing part 131 shaped like an opening.
1 and a connecting portion 132 extending toward the rear below the
It has a plurality of arrowhead-shaped locking parts 133 that protrude from the rear of the surrounding part 131. Although the enclosing portion 131 is shaped like an opening, it is not limited to the opening and may be formed into a box shape. The connecting portion 132 has a connecting portion 1132' that protrudes downward at its front portion, and this connecting portion 132' is connected to a receptacle connector 20 which will be described later.
It is designed to be shield-connected to a connecting piece 232' provided on a shield fitting 230 incorporated into the receptacle insulating housing 210 of No. 0. Furthermore, connection part 1
A connection hole 132'' is provided at the rear of the cable 10 for receiving the shield wire 12 of the cable 10 and connecting it with solder.
It is being

The shield fitting 130 is preferably press-fitted into the fitting receiving groove 113.

The pair of plug cases 140Δ and 140B are made of an insulating material such as plastic, and in this embodiment, are hermaphroditic. That is, the upper plug case 140
In A, the right side wall when viewed in Figure 1 is
From the ceiling wall side ti 146 A, the left side wall 143A
It is formed at a recessed position by the thickness of , and has locking protrusions 144A at two locations. Similarly, lower plug case 1
40B, the right side wall 142 of the upper plug case 140A is attached to the right side wall 143B when viewed in FIG.
A locking opening 145B is formed at a position corresponding to the locking protrusion 144Δ of A to lock the connection between the upper plug case 14QA and the lower plug case 140B. Although not included, the upper plug case 14
A lower plug case 140 is installed on the left side wall 143A of 0A.
A locking opening similar to the locking opening formed in the right side wall 143B of B is formed, and the lower plug case 14
The left side wall 142B of 0B is the upper plug case 140A.
It is in the same recessed position as the right side wall 142A, and has a locking protrusion similar to the locking protrusion 144Δ. Furthermore, as clearly shown in the cross-sectional view of FIG. 4, the upper plug case 140A has a semicircular recess 147A in the rear wall for clamping the sheathing portion of the cable 10, and a semicircular recess 147A that protrudes into the inside of the rear portion to clamp the cable 10. It has a shield wire contact protrusion 148A that contacts the shield wire 12 of. Similarly, the lower plug case 140B is shown in the cross-sectional view of FIG.
Semicircular recess 147B for clamping the sheath of the cable 10
a shield wire contact protrusion 11 which has on the rear wall and projects into the interior of the rear part and contacts the shield wire 12 of the cable 10;
It has 43B. The upper plug case 140A and the lower plug case 140B may be made of metal or an insulating material such as plastic and plated with metal on the surface if countermeasures against radio interference are required. It is good to eliminate this.

The receptacle connector 200 is made of solid material such as plastic.
Receptacle insulating housing 210 formed of RO family
This receptacle insulation housing 210
A mh male contact 220 is disposed inside. Then, on the coupling surface of the receptor insulating housing 210,
Fitting cavity 211 that receives mating plug connector 100
is provided, and contact portions 221 of a plurality of male contacts 220 protrude from the bottom surface 212 of this fitting cavity 211.

According to the present invention, an annular fitting receiving groove 213 substantially surrounding the outer periphery of the fitting cavity is formed at the distal end of the receptacle insulating housing 210. This annular metal fitting receiving groove 213 is open to the distal end surface of the receptacle insulating housing 210, and a corresponding annular shield fitting 230 is inserted into this metal fitting receiving groove 213 from the distal end surface thereof. It has become. Shield metal fittings 23
0 is formed by press-punching a metal plate, and includes a box-shaped surrounding part 231, a connecting part 232 extending rearward below this surrounding part 231, and a connecting part 232 of the surrounding part 231. It has a plurality of arrowhead-shaped locking portions 233 that protrude from the rear. A bent part 231' is formed in the front of the surrounding part 231, which partially covers the coupling surface of the receptacle insulating housing 210 when the enclosing part 231 is bent at approximately 90 degrees and assembled into the receptacle insulating housing 210. The connecting portion 232 has a connecting protrusion 132′ provided on the connecting portion 132 of the shield fitting 130 described above.
A connecting piece 232' is formed for contacting with.

At the rear of the connecting piece 232', there is a connecting boss (2.32'') bent at approximately 90 degrees for connection to the ground circuit of the circuit board.This shield fitting 230 is It is preferable that the metal fitting receiving groove 213 be press-fitted and fixed.

Note that on the top surface of the receptacle insulating housing 210,
A locking tongue piece 2 having a locking protrusion 214A (see FIG. 4) that projects into the fitting cavity 211 by a cut-out groove in the shape of an opening.
14 is formed, and on the other hand, a locking protrusion is formed at the tip of the upper surface of the plug insulating housing 110 to engage with the locking protrusion 214A to lock the fitting between the plug connector 100 and the receptacle connector 200. 116 is formed.

Next, a method of assembling and connecting the plug connector 100 and receptacle connector 200 configured as described above will be explained.

Assembling method of plug connector (1) From the coupling surface of the single plug insulating housing 113, as shown in FIG. 1, the shield fitting 130 is inserted into the fitting receiving groove 113 and press-fitted and fixed.

r2) Next, as shown in FIG. 1, the crimp portion 122 of the female contact 120 is crimp-connected to the tip of each lead wire 11 of the cable 10 which has been terminal-treated. And female contact 12
0 into the contact receiving hole 1 of the plug insulating housing 110
11 and secure it.

(3) Further, the shield wire 12 is inserted into the wire connection hole 132'' of the connection portion 132 provided at the rear of the shield metal fitting 130 and connected by solder.

(4) Finally, the upper plug case 140A and the lower plug case 140B are completed by sandwiching the connected housing 110 from the upper and lower sides.

Method for assembling a receptacle connector (1) As shown in FIG. 1, a plurality of male contacts 220 are assembled into the receptacle insulating housing 210 (in this case, the male contacts may be molded integrally).

(2) Next, similarly to the plug connector 100, the shield fitting 230 is inserted and press-fitted into the fitting receiving groove 213 provided on the coupling surface of the receptacle insulating housing 210.

FIG. 4 is a sectional view showing a state in which the plug connector 100 and the receptacle connector 200 are connected as described above. As clearly shown in FIG. 4, the shield wire 12 of the cable 10 connected to the plug connector 100 is
It is connected to the connection hole 132'' of the connection part 132 of the shield metal fitting 130, the connection protrusion 132' of the shield metal fitting 130 contacts the connection piece 232' of the shield metal fitting 230 of the receptacle connector 200, and the connection post 232'' of the shield metal fitting 230 is connected. ' is connected to the ground circuit of the circuit board 20 because it is connected to the ground circuit. In addition, the plug insulating housing 11 of the plug connector 100
The female contacts 120 disposed within the cable 10 contact the male contacts 220 disposed within the receptacle insulation housing 210 of the receptacle connector 200 .
Each lead wire 11 will be connected to a desired circuit conductor of the circuit board 20. In this state, the surrounding portion 131 of the shield fitting 130 and the surrounding portion 1231 of the shield fitting 230 are connected to the contact portion 12 of these female contacts 120.
The contact portion 221 of the contact portion 220 is substantially surrounded by the contact portion 221 of the contact portion 220, and effectively serves to prevent leakage of radio waves. In addition, in this practical example, the shield fitting 1
30 enclosing part 131 and shield fitting 230 enclosing part 2
31 are said to be different from each other and are separated by a certain distance from each other, but in order to reliably prevent radio wave leakage,
More preferably, these surrounds 1131 and 231 are staggered and partially overlap each other.

In addition, as described above, the shield wire 12 of the cable IO
is the shield wire contact protrusion 14 of the upper plug case 140Δ
8A and the shield wire contact protrusion 148B of the lower plug case 140B, the upper plug case 140Δ and the lower plug case 140B are connected to the metal +
) If the plug case is made of i-metal or plated with metal, the plug case will be electrically connected to the shield wire, which is preferable for EMI countermeasures.

FIG. 5 is a perspective view showing another practical 'J'I shield fitting of the present invention used in plug connectors and receptacle connectors. Reference numeral 130A indicates a shielding fitting that replaces the above-described shielding fitting 130 used in the plug connector, and reference numeral 230A indicates a shielding fitting that replaces the shielding fitting 230 used in the receptacle connector. The shield fitting 130A is the surrounding part 1
31A is box-shaped, and the contact part 132A is connected to cable 1.
The shield fitting 130 is substantially the same as the shield fitting 130 described above, except that it has a crimp portion 132A' for connection with the shield fitting 132A' and a plurality of pieces are connected by a connecting band 30.

Further, the shield fitting 230A is substantially the same as the shield fitting 230 described above, except that a plurality of shield fittings are connected by a connecting band 40. By connecting the shield metal fittings with the connecting band in this manner, the shield metal fittings can be easily attached to each insulating housing, and mass production can be made possible.

Effects of the Invention Since the electrical connector with shield fitting of the present invention has the above-described structure, it is possible to obtain the following special effects.

(1) Each mating side of a plug connector and a receptacle connector has a structure in which a shield fitting is embedded inside the front end surface of a housing having contacts so as to surround the contacts, so that the mating side The connector is smaller in size than conventional connectors and can be used as countermeasures against radio interference and electrostatic interference. In addition, since the bonding surface has been reduced in size and has a built-in shield fitting, the strength of the bonding side is reinforced by the existence of the shield fitting, and the strength of the bonding side is reinforced by the existence of the shield fitting, and the strength of the bonding side is reinforced by the presence of the shield fitting. Even when the joint tip comes into contact with another object, it will not be damaged.

(2) When shielding metal fittings are embedded in each mating side of the plug connector and receptacle connector, and when the plug connector and receptacle connector are combined, the shielding metal fittings are placed in different positions from each other, so the shielding metal fittings are placed in different positions. The embedding does not need to be very deep in the depth direction, and countermeasures against radio wave interference can be taken, so processing and assembly are easy and inexpensive.

(3) Since the coupling surface of each connector has a shielding metal fitting, even if a statically charged human finger comes into contact with the coupling surface, the static electricity will flow from the shielding metal fitting to the ground circuit and connect the contact. Therefore, static electricity damage can be prevented with a very simple configuration.

[Brief explanation of the drawing]

FIG. 1 is an exploded parts arrangement perspective view showing an electrical connector with a shield fitting as an embodiment of the present invention, FIG. 2 is a plan view of the assembled state of the plug connector 100, and FIG. 3 is the receptacle connector. FIG. 4, which is a plan view of the 2000 assembled state, is a sectional view showing the coupled state of the electrical connector with shield fitting shown in FIG. 1, and FIG. 5 is another embodiment of the present invention used for a plug connector and a receptacle connector. FIG. 3 is a perspective view showing a shield fitting. 10... Cable, 11... Lead wire, 12... Shield wire, 100... Plug connector, 110... Plug insulation housing, 111...Contact accommodation hole, 113...
...Metal fitting receiving groove, 120...Female contact, 130...Shield fitting, 131...
- Surrounding part, 132... Connection part, 132'...
... Connection protrusion, 132" ... Connection hole, 140A ... Upper plug case, 140B ...
... Lower plug case, 200 ... Receptacle connector, 210 ... Receptacle insulation ring, 211 ... Fitting cavity, 213 ...
...Metal fitting receiving groove, 220...Male contact, 280...Shield fitting, 231...
Surrounding part, 232... Connection part, 232'...
... Connection piece, 232" ... Connection post. Fig. 2 Fig. 3

Claims (4)

[Claims] (1) An electrical connector with shield fittings consisting of a plug connector and a receptacle connector each having shield fittings that are electrically connected to each other when mated to each other, wherein the plug connector has a plug insulating housing in which contacts are arranged. A metal fitting receiving groove that substantially surrounds the outer periphery of the contact and is open to the tip surface is formed at the tip of the plug insulating housing, and a shield fitting is inserted into the metal fitting receiving groove into the tip surface. The receptacle connector includes a receptacle insulating housing in which a contact is disposed, and the receptacle insulating housing has a fitting cavity for receiving the tip end of the plug insulating housing of the plug connector. A metal fitting receiving groove that substantially surrounds the outer periphery of the fitting cavity and is open to the tip surface is formed at the tip of the receptacle insulating housing, and a shield is inserted into the metal fitting receiving groove. An electrical connector with a shield metal fitting, characterized in that the metal fitting is inserted and arranged from the tip surface. (2) The shield fitting of the plug insulating housing and the shield fitting of the receptacle insulating housing are located at different positions from each other in the fitted state of the plug connector and the receptacle connector. Electrical connector with shield fittings described in item 1). (3) the shield fitting of the plug insulating housing and the shield fitting of the receptacle insulating housing are at different positions when the plug connector and the receptacle connector are fitted together;
Moreover, the electrical connector with shield fittings according to claim 1, wherein the shield fittings overlap each other at least in part. (4) The electrical connector with a shield fitting according to claim 1, wherein the shield fitting is inserted into the metal fitting receiving groove by press-fitting. .