JP3534476B2 - Shielded electrical connector and shielded case - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to electrical connectors, especially EM.
The present invention relates to a shield-type electric connector that performs an I (electromagnetic interference) prevention shield and a shield case used for the same.

[0002]

2. Description of the Related Art A so-called miniature circular Din connector or a stack type miniature circular Din connector (hereinafter simply referred to as Din connector) that uses one or more small circular insulating housings made of plastic and covers the outer circumference with a shield case to prevent EMI. Has been widely used in applications requiring a shield.

A typical example of such a Din connector is US Pat.
No. 4,842,554 and JP-A-4-169480. Since these publicly known materials are incorporated herein as prior art, please refer to them as necessary. In such a Din connector, an outer surface of the substantially rectangular insulating housing is covered with a shield case made of a conductive metal plate on four outer surfaces (front surface, both side surfaces and upper surface) or five surfaces (the above four surfaces and the rear surface), and a circuit is formed. Grounded to the ground conductor of the plate.

The conventional shield case 10 covers five surfaces of an insulating housing (not shown) as shown in FIG. Figure 3
(A) is a perspective view of the shield case 10 and shows the rear surface plate 15 in an open state, that is, before being bent to a completely used state (closed state).

The shield case 10 includes left and right side plates 11, 12, a top plate front plate 14 and a rear plate 15. The shield case 10 is manufactured by subjecting a conductive metal plate to conventional punching (stamping) and bending (forming). Figure 3
In (A), the rear face plate 15 is bent 90 ° from the position shown in the figure along the bending line 16, and is brought into a closed state to engage with the left side face plate to complete the shield case 10. Two pairs of holding or soldering legs 11a-11b at the lower ends of the side plates 11 and 12,
12a-12b are formed. In this particular example, one of the pairs of legs, 11a, 12a, is solid (or rigid) and the other 11b, 12b is elastic so that each of the pairs of circuit boards (not shown) to which the shield connector is attached. Elastically penetrates the inner wall of the through hole. In other words, the elastic legs 11b, 12
b has a function of attaching a shield connector covered by the shield case 10 to a circuit board and holding or fixing the shield connector including the shield case 10 at a predetermined position on the circuit board during the soldering work.

In this particular example, two latch members 17 are formed along the free ends of the back plate 15 with the lock tabs 18 stamped. When the back plate 15 is folded to the closed position, the locking tabs 18 will engage the corresponding latch openings 19 on the left side plate 11.
And the shield case 10 is assembled and completed.

Next, a process of assembling and manufacturing the shield case 10 using a metal plate will be described with reference to FIG.
The stamped metal plate (or blank) 20 in FIG. 3B has a left side plate 11, a front plate 14, a right side plate 12, a top plate 13 and a rear plate 15. Typically, the metal plate 20 has upper and lower carrier strips 21 and 22 for convenience of a series of manufacturing steps of a plurality of shield cases. The metal plate 20 of FIG.
For simplicity, the solder and fixing legs 11a shown in FIG.
-11b and 12a-12b are omitted.

[0008]

As is apparent from FIG. 3B, the hatched areas 23 and 24 of the metal plate 20 are cut off, but this is the total area of the metal plate 20. Occupies a considerably large proportion of. As a result, a large amount of slag is produced when manufacturing the shield case 10 from the metal plate 20,
Since the usage efficiency of the metal plate is reduced, the manufacturing cost is increased.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a shield case and a shield type electric connector using the same, which improves the utilization efficiency of the metal plate, that is, minimizes the generation of slag and reduces the manufacturing cost.

[0010]

Means for Solving the Problems] To solve the problems of the prior art, in order to achieve the above object, shielded electrical connector of the present invention comprises a substantially rectangular insulating housing mounted on a circuit board, said insulating At least front of housing , both
And a bovine Rudokesu covering the side surfaces and upper surface, the sea <br/> Rudokesu is a conductive metal plate punching and bending and
Formed on the front surface, both side surfaces and above of the insulating housing
A front plate that covers each surface, and both side plates that are continuous with the front plate
And in a shielded electrical connector having a top plate,
The upper surface plate is divided into two and connected to the both side surface plates.
And has a seam in the center, and at the bottom of the side plates
Is a half inserted into the corresponding through hole of the circuit board.
On the rear surface of the insulating housing, the mounting legs are formed.
Is formed by punching and bending a metal plate.
Select the rear cover that engages with the shield case and is integrated
It is characterized in that it can be selectively mounted. Also,
Akira's shield case for electrical connectors is attached to the circuit board
Front, side and top of the substantially rectangular insulating housing
And in the shield case that shields the rear surface, the front
A plate, both side plates continuous with the front plate, and divided into two parts,
Each side plate is continuous with a seam formed in the center.
And a main body having an upper surface plate
And a rear plate separate from the main body,
At the bottom of the face plate, in the corresponding through hole of the circuit board
It features that the soldering leg to be inserted is formed
To do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the shield type electric connector and its shield case of the present invention will be described in detail below with reference to the accompanying drawings, that is, FIGS.

FIG. 1 is a perspective view of a preferred embodiment of a shielded electrical connector 30 according to the present invention. The shielded electrical connector 30 of this particular embodiment is a stacked miniature Din.
It is a connector and includes an insulating housing (hereinafter simply referred to as housing) 40 and a shield case 50.

The housing 40 has a substantially rectangular outer shape.
A partition 43 is provided to form upper and lower compartments (connector housing chambers) 41, 42 for housing a pair of circular Din connectors (not shown). The housing 40 is a molded product of a hard insulating engineering plastic material such as liquid crystal polymer.

The shield case 50 is designed to cover the five sides (front, side, top and rear) of the housing 40 in this particular embodiment. Although not shown in FIG. 1, two substantially circular openings are formed in the front plate of the shield case 50 to expose the fitting portions of the two internal Din connectors with the mating connectors.

The shield case 50 comprises a main body 60 and a rear cover 70 which is engaged with and integrated with the main body 60. The main body 60 is formed by punching and bending a conductive metal plate described later with reference to FIG.

The main body 60 of the shield case 50 has side plates 61,
It has a front plate 62, a front plate 63 and a top plate 64, and covers both side surfaces, front surface and top surface of the housing 40, respectively. Similar to the conventional shield case 10 shown in FIG. 3A, the bottom surfaces of the side plates 61 and 62 are inserted into corresponding through holes of a circuit board (not shown) to which the shield-type electrical connector 30 is attached. It is preferable that two pairs of soldering legs 61a-61b and 62a-62b are formed. The top plate 64 is two half bodies 64 divided into two.
a, 64 b , and has a seam 65 at the center from the front end to the rear end. The top plate 64 also has two pairs of slots 66 at the front and rear ends.
There are a-66b and 67a-67b. A flange 68 is formed on the front end of the top plate 64 to hold the body 60 in a predetermined shape. Latch openings 69 are formed on both side plates 61, 62 along their rear ends, and are configured to engage with complementary lock tabs of a rear cover 70, which will be described later.

The rear cover 70 is a substantially flat plate-like member and is configured to cover the rear surface of the housing 40. More specifically, the rear cover 70 includes a flat rear plate 71 and a flange 68.
And a flange 72 similar to. Flange 72 has 1 on both ends
It has a pair of locking tabs 73a-73b and is used for slot 67
It is inserted at a −67b. Two pairs of lock tabs 74 and 75 are provided along both sides of the rear plate 71, and engage with the latch openings 69 by embossments (projections) formed on their surfaces.

The rear cover 70 is conveniently engaged and integrated with the body 60 by the locking tabs 73, 74, 75 and the slots 67a-67b and the opening 69. Note that the housing 40 has recesses formed at locations corresponding to the slots 67 and openings 69 (see FIG. 1).

FIG. 2 is a front view of the metal plate 80 on which the main body 60 of the shield case 50 of FIG. 1 is formed. This body 60
Is formed by punching and bending a metal plate. As is clear from FIG. 2, only the shaded areas 81 and 82 are metal plates.
It is punched out from 80 and becomes slag, but this area 81,
Since 82 is only a small part of the metal plate 80, FIG. 3 (A)
It can be understood that the manufacturing cost of the shield case 50 can be significantly improved because the metal plate is used more efficiently and the slag is generated, that is, the waste is less than that of the conventional shield case 10.

The body 60 of the shield case 50 can be easily formed by only bending the metal plate 80 along the bending lines F ₁ , F ₂ and F ₃ . Shield case 50 body 60 with metal plate
Housing 40 after forming by punching and bending of 80
Crown from the front (or top). Thereafter, as shown in FIG. 1, a rear cover 70 formed by punching and bending a metal plate is attached to the rear surface of the housing 40. The rear cover 70 includes lock tabs 73-75, recesses in the wall surface of the housing 40, and slots 67 in the top plate 64 of the main body 60 of the shield cover 50.
It is easily integrated with body 60 by simply inserting and engaging a-67b. In other words, the back cover 70 is electrically and mechanically coupled to the body 60 without the use of special coupling means and tools. This allows the entire surface of the housing 40 to be completely enclosed except for the bottom surface attached to the circuit board.

Although not shown in FIGS. 1 and 2, horizontal embossments (protrusions) are formed on the side plates 61 and 62 of the shield cover 50, similarly to the conventional means, to form complementary grooves or channels in the housing 40. It is slidably engaged with and properly guides and holds between the housing 40 and the shield case 50.

The preferred embodiments of the shielded electrical connector and its shield case of the present invention have been shown and described in detail above. Further, a method of manufacturing or assembling such a shielded electrical connector and its shield case has also been described. However, the invention should not be limited to only such examples,
Those skilled in the art will understand that various modifications and changes can be made to suit a particular application without departing from the spirit of the present invention. For example, the rear cover is not essential for a specific application and may be omitted. Further, the present invention can be used as a shield type electrical connector other than the stack type Din connector and its shield case.

[0023]

As can be understood from the above description, the shielded electrical connector and its shield case of the present invention are
Waste of metal plate for manufacturing shield case (ie slag)
Can be minimized to reduce manufacturing costs and obtain desired electromechanical performance. Furthermore, since the shield case and the rear cover can be engaged and integrated with the main body without using a tool or the like, workability is good, and manual or automatic assembly is possible. Further, since the recess is formed in the predetermined portion of the housing, it is possible to more easily and reliably engage the rear cover with the main body to obtain the shield case and the shield-type electrical connector.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a preferred embodiment of a shielded electrical connector according to the present invention.

2 is a simplified plan view of a metal plate on which the main body of the shield case of the shielded electrical connector of FIG. 1 is formed.

FIG. 3 shows a conventional shield case, (A) is a perspective view of a partially assembled shield case, and (B) is a simplified plan view of a metal plate for manufacturing the shield case.

[Explanation of symbols]

30 shielded electrical connector 40 housing 50 shield case 60 body 61, 62 Side plate 63 Front plate 64 Top plate 64a, 64b Top plate half 65th seam 70 rear cover

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-260247 (JP, A) Actual flat 2-150682 (JP, U) Actual flat 2-150777 (JP, U) Actual flat 5- 31134 (JP, U) Actual Kaihei 5-11344 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 13/648-13/658 H01R 24/08

Claims (2)

(57) [Claims] 1. A saw-containing substantially rectangular insulating housing mounted on a circuit board, and a shield case covering at least the front, both sides and the top surface of the insulating housing, said shield
The case is formed by punching and bending a conductive metal plate.
The insulation housing, the front surface, both side surfaces and the top surface
A front plate that covers each side plate, both side plates that are continuous with the front plate,
In shielded electrical connector having a top plate, the top plate is divided into two to each of the both side plate communicating
It has a seam in the middle with connection to the the bottom of both side plates, corresponding through of the circuit board
A soldering leg to be inserted into the hole is formed , and a metal plate is punched and folded on the rear surface of the insulating housing.
Formed by bending and engaging with the shield case
A shielded electrical connector characterized in that an integrated rear cover can be selectively attached . 2. A front surface of a substantially rectangular insulating housing mounted on a circuit board, both sides, in the shield case for shielding the upper surface and a rear surface, the front plate, both side plates continuous to said front plate and 2 is divided
Wherein a body having a top surface plate seam is formed in the center with a continuous on both side plates are integrated by engagement to the body, and ingredients Bei the rear plate separate from said body, said At the bottom of both side plates, the corresponding through of the circuit board
A shield case for electrical connectors, characterized in that it has soldering legs that are inserted into the holes .