JP2530527Y2 - Connector with shell - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to electromagnetic interference (EMI).
The present invention relates to a connector provided with a metal shell for countermeasures.

[0002]

2. Description of the Related Art In recent years, with the spread of electronic devices, various electronic devices have been used not only at companies but also at home. Such an electronic device generally includes a microprocessor. As is well known, a microprocessor operates in synchronization with a relatively high frequency clock signal. For this reason, most electronic devices scatter electromagnetic waves around them. This electromagnetic wave acts as a disturbing electromagnetic wave for electronic devices other than the electronic device emitting the electromagnetic wave. Further, such interference electromagnetic waves are not radiated from only the above-described electronic devices, but are also radiated from vehicles such as cars and motorcycles, as is well known.

[0003] In general, electronic equipment is covered with a metal casing to shield such external electromagnetic interference. The electronic device is used not only alone but also in combination with another electronic device. In such a case, the electronic devices are connected via a connector. The connector has a plurality of conductive contacts.
If such contacts are exposed to the outside, interfering electromagnetic waves can penetrate into the electronic equipment through them,
Electronic devices may be adversely affected. To shield the contacts from interfering electromagnetic waves, the connector is structured so that the contacts are surrounded by a metal shell.

FIG. 6 shows the structure of a conventional connector with a shell. The connector with a shell has a connector main body and a pair of back shells 50 and 60 which are combined so as to sandwich the connector main body from above and below. Here, the back shell 50 is referred to as an upper back shell, and the back shell 60 is referred to as a lower back shell.

[0005] The connector body includes an insulator 20 having a substantially rectangular parallelepiped shape, a plurality of conductive contacts 10 extending forward from the insulator 20, and a cylindrical type attached to the front surface of the insulator 20 and covering the conductive contact 10. And a front shell 40.

The front shell 40 has a cylindrical portion, and a flange extending outward from the rear end of the cylindrical portion in a direction perpendicular to the axial direction of the cylindrical portion. Abut. The flange has four protrusions 42 (although only three protrusions are shown in the drawing) spaced from each other on both sides of the upper end and the lower end. These projections 4
Reference numeral 2 is for positioning the upper back shell 50 and the lower back shell 60 when assembling the connector main body with the upper back shell 50 and the lower back shell 60.

The upper back shell 50 has an upper surface and both side surfaces, and has a substantially U-shaped cross section. Upper backshell 50
A pair of square holes 51 are provided at the front ends of the upper surface of the upper surface at positions corresponding to the protrusions. These square holes 51
Is for positioning the connector body when assembling the connector body and the upper backshell 50. That is, when the connector body and the upper back shell 50 are assembled, the two protrusions 42 provided at the upper end of the flange of the front shell 40 are inserted into these square holes 51. Towards back and forth on both sides of the upper back shell 50, four projections 53 projecting inwardly (although, in the drawing only two projections on the right side of the paper is shown Figure) is provided. These projections 53 are connected to the lower back shell 6 described below.
0 for engagement.

The lower back shell 60 has a lower surface and both side surfaces, and has a substantially U-shaped cross section. Lower backshell 60
Is slightly shorter than the distance between both side surfaces of the upper back shell 50. That is, when assembling the connector body with the upper back shell 50 and the lower back shell 60, the outer walls on both sides of the lower back shell 60 contact the inner walls on both sides of the upper back shell 50. A pair of square holes 61 are provided at both front ends of the lower surface of the lower back shell 60 at positions corresponding to the protrusions 42. These square holes 61 are formed between the connector body and the lower back shell 60.
This is for positioning the connector body when assembling. That is, when the connector body and the lower back shell 60 are assembled, the two projections 42 provided at the lower ends of the flanges of the front shell 40 in the square holes 61.
Is inserted. Four square holes 63 are provided at front and rear sides of both sides of the lower back shell 60 at positions corresponding to the projections 53 of the upper back shell 50. These square holes 63
Are for engaging with the upper back shell 50. That is, the connector body and the upper backshell 50
When the lower back shell 60 is assembled, the projection 53 of the upper back shell 50 is inserted into the square hole 63 of the lower back shell 60, and the upper back shell 50 and the lower back shell 60 are fixed.

[0009] The connector body and the pair of back shells assembled in this manner are assembled in a hood (not shown).

[0010]

As described above, in the conventional connector with a shell, the front shell 40 of the connector body and the pair of back shells 50 and 60 are simply connected to the projection 42 of the front shell 40 and the pair. Are assembled by positioning the back shells 50 and 60 with the square holes 51 and 61. For this reason, the front shell 4 of the connector body
In some cases, conduction between 0 and the pair of backshells 50 and 60 is not reliably (good). As a result, the conventional connector with a shell has a disadvantage that EMI countermeasures are incomplete.

On the other hand, in order to improve the conduction between the front shell 40 of the connector body and the pair of back shells 50 and 60, a method of adjusting the positioning dimension between the shells can be easily considered. That is, the size of the protrusion 42 of the front shell 40 is made slightly larger than the size of the square holes 51 and 61 of the pair of back shells 50 and 60, and the protrusion 4
2 is pressed into the square holes 51 and 61. However, this method has a disadvantage that the number of assembling steps is increased. Also,
Also in this method, conduction between the front shell 40 of the connector main body and the pair of back shells 50 and 60 may become unstable.

Accordingly, it is an object of the present invention to provide a connector with a shell which is easy to assemble, ensures conduction between shells, and can improve EMI countermeasures.

[0013]

SUMMARY OF THE INVENTION A connector with a shell to which the present invention is applied is combined with a connector body having a front shell covering a plurality of conductive contacts extending forward from an insulator, and sandwiching the connector body from above and below. and a pair of back shells, a front shell
The plurality of protrusions project outward from the upper and lower surfaces.
With a pair of backshells each with a plurality of protrusions
It has a plurality of square holes provided at corresponding positions,
A front shell and a pair of back shells with a pair of square holes
The front shell up and down with a pair of back shells
It is assembled so that it is sandwiched between .

According to a first aspect of the present invention, the front shell has a conductive spring member protruding outward from at least one of the upper and lower surfaces thereof, and the conductive spring member includes a pair of conductive spring members. When the back shell is combined with the connector body, it abuts on at least one inner wall surface of the pair of back shells in an elastically deformed state, and provides good conduction between the front shell and at least one of the pair of back shells. to enable.

According to a second aspect of the present invention, at least one of the pair of back shells has a conductive spring member projecting inward from an inner wall surface thereof, and the conductive spring member includes a pair of back shells. When the shell is combined with the connector body, it abuts on at least one of the upper surface and the lower surface of the front shell in an elastically deformed state, and provides good conduction between at least one of the pair of back shells and the front shell. to enable.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of a connector body of a connector with a shell according to an embodiment of the present invention. This connector body has basically the same configuration as that shown in FIG. 6 except that it has a conductive spring member 41. Therefore, components having the same functions as those of the components of the connector main body shown in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the conductive spring member 41
Protrudes outward and in a direction opposite to the direction in which the tubular portion extends at four locations on both ends further away from the projections 42 at the upper and lower ends of the flange of the front shell 40. here,
The longest distance between the conductive spring members 41 facing each other in the width direction of the connector body is defined as a as shown in FIG.
Will be represented by

The front shell 40 has an extending portion 43 which is stepped from the center of the rear end of the cylindrical portion and extends rearward in parallel with the central axis of the cylindrical portion. The extending portion 43 is provided with a square hole 43a.
Are fitted.

Referring to FIGS. 2 and 3, the connector body shown in FIG. 1, the upper back shell 50 and the lower back shell 60 is attached not assembled. Here, as shown in FIG. 3, a distance between the inner wall on the upper surface of the upper back shell 50 and the inner wall on the lower surface of the lower back shell 60 after assembly is represented by b. At this time, the longest distance a between the conductive spring members 41 (FIG. 1D) is set to be longer than the distance b between the inner walls. That is, there is a relationship of a> b. As a result, the conductive spring member 4
1 (FIG. 1), when the pair of back shells 50 and 60 are combined with the connector body, comes into contact with the inner wall surfaces of the pair of back shells 50 and 60 while being elastically deformed. Therefore, it is possible to conduct well between the front shell 40 and the pair of back shells 50 and 60. For this reason, the connector with a shell provided with the connector main body shown in FIG. 1 can improve EMI countermeasures.

In FIG. 3, the insulator 20
Is covered with a cover 30.

Referring to FIG. 4, as described above, after assembly of the connector body and a pair of backshell 50 and 60, the hood 70 is attached assembled outside the pair of backshell 50 and 60. A cable 80 extends from the rear end of the hood 70.

Referring to FIG. 5, a connector with a shell according to another embodiment of the present invention, except that the conductive spring member is provided on the pair of back shells 50 and 60 instead of the connector body. , And has the same configuration as the above-described embodiment described with reference to FIGS. Therefore,
Components having the same functions as the components of the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

That is, the upper back shell 50 has a conductive spring member 52 protruding inward from two locations (only one location is shown in FIG. 4) separated by a predetermined distance on the inner wall surface of the upper surface. Similarly, the lower back shell 60 has a conductive spring member 62 protruding inward from two locations on the inner wall surface of the lower surface. As shown in FIG. 5 (b), when the pair of back shells 50 and 60 and the connector body are combined, the shortest distance between the pair of conductive spring members 52 and 62 facing each other is equal to the length of the facing front shell. The length is set to be shorter than the longest distance in the width direction between the 40 extending portions 43. Therefore, when the pair of back shells 50 and 60 are combined with the connector main body, the conductive spring members 52 and 62 are elastically deformed on the upper surface and the lower surface of the extending portion 43 of the front shell 40 of the connector main body. Abut. Therefore, these elastic spring members 52 and 62 enable good conduction between the upper back shell 50 and the front shell 40 and between the lower back shell 60 and the front shell 40. For this reason, a connector with a shell including a pair of back shells 50 and 60 having such a structure can improve EMI countermeasures.

It should be noted that the present invention is not limited to the embodiment described above, and various changes and modifications can be made without departing from the spirit of the present invention. For example, in the former embodiment, the conductive spring member is provided so as to project outward from both the upper surface and the lower surface of the front shell.
The conductive spring member may be provided so as to project outward from at least one of the upper surface and the lower surface of the front shell.
Further, in the latter embodiment, the conductive spring member is provided so as to protrude inward from both inner wall surfaces of the pair of back shells, but the conductive spring member is provided from at least one inner wall surface of the pair of back shells. You may provide so that it may protrude inside.

[0026]

According to the present invention as has been described above devised], before
A plurality of protrusions provided on the outer shell and a pair of back shells
Position the front shell and the pair of back shells with the square holes
And sandwich the front shell from above and below with a pair of backshells.
Connector with shell
Since the conductive spring member provided on the front shell and / or back shell of the connector body, easy to assemble, reliable one
The continuity between the back shell and the front shell of the pair is established,
A connector with a shell with improved MI countermeasures can be provided.

[Brief description of the drawings]

FIG. 1 is a view showing a structure of a connector body of a connector with a shell according to an embodiment of the present invention, wherein (a) is a rear view,
(B) is a plan view, (c) is a front view, and (d) is a side view.

FIGS. 2A and 2B are views showing a state in which a pair of back shells are assembled to the connector main body shown in FIG. 1, wherein FIG. 2A is a bottom view and FIG.
Is a side view.

FIG. 3 is a transverse sectional view taken along line III-III in FIG. 2;

FIG. 4 is a view showing a state where a hood is attached to the thing of FIG. 2;
(A) is a plan view showing a half section, and (b) is a half section.
And (c) is a front view .

5A and 5B are diagrams showing a structure of a connector with a shell according to another embodiment of the present invention, wherein FIG. 5A is a plan view of a main part showing a state in which a lower back shell and a connector body are assembled, and FIG. FIG. 5A is a schematic side view including a cross section viewed from line V-V of FIG.

FIG. 6 is an exploded perspective view showing a conventional connector with a shell.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 contact 20 insulator 21 protrusion 30 cover 40 front shell 41 conductive spring member 42 positioning protrusion 43 extending portion 50 upper back shell 51 positioning square hole 52 conductive spring member 53 engagement protrusion 60 lower back shell 61 positioning square hole 62 Conductive spring member 63 Engagement square hole 70 Hood 80 Cable

Claims (2)

(57) [Scope of request for utility model registration] And 1. A connector body having a front shell for covering the plurality of conductive contacts extending forwardly from the insulator, a shell with connector having a pair of backshell combined so as to sandwich the connector body from above and below The front shell has upper and lower surfaces thereof
A plurality of projections projecting outward from the
The shell is located at a position corresponding to each of the plurality of protrusions.
The plurality of protrusions and the plurality of
And the front shell and the pair of back shells
And position the front shell with the pair of back shells.
With the shell assembled by sandwiching it from above and below
In the connector , the front shell has a conductive spring member projecting outward from at least one of an upper surface and a lower surface thereof, and the conductive spring member includes a pair of the back shell and the connector body. When they are combined, they come into contact with at least one inner wall surface of the pair of back shells in an elastically deformed state, thereby enabling good conduction between the front shell and at least one of the pair of back shells. A connector with a shell. 2. A connector body having a front shell for covering the plurality of conductive contacts extending forwardly from the insulator, a shell with connector having a pair of backshell combined so as to sandwich the connector body from above and below The front shell has upper and lower surfaces thereof
A plurality of projections projecting outward from the
The shell is located at a position corresponding to each of the plurality of protrusions.
The plurality of protrusions and the plurality of
And the front shell and the pair of back shells
And position the front shell with the pair of back shells.
With the shell assembled by sandwiching it from above and below
In the connector , at least one of the pair of backshells has a conductive spring member projecting inward from an inner wall surface thereof, and the conductive spring member is configured such that the pair of backshells is combined with the connector body. When contacting, at least one of the upper surface and the lower surface of the front shell abuts in an elastically deformed state, thereby enabling good conduction between at least one of the pair of back shells and the front shell. A connector with a shell.