JPH0631089U - Connector with shell - Google Patents

Abstract

(57) [Summary] [Object] To provide a connector with a shell, which is easy to assemble, ensures conduction between the shells, and improves EMI countermeasures. [Constitution] The front shell 40 of the connector body has conductive spring members 41 at four positions further apart from the projections 42 on both ends of the upper and lower ends of the flange. These conductive spring members 41 project outward and in a direction opposite to the direction in which the tubular portion extends. These conductive spring members 4
When the pair of back shells is combined with the connector main body, 1 is in contact with the inner wall surfaces of the pair of back shells in an elastically deformed state to enable good conduction between the front shell and the pair of back shells. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector provided with a metal shell as a countermeasure against electromagnetic interference (EMI).

[0002]

[Prior art]

 With the spread of electronic devices in recent years, various electronic devices have come to be used not only in companies but also at home. This kind of electronic device is generally equipped with a microprocessor. As is well known, microprocessors operate in synchronization with a relatively high frequency clock signal. Therefore, most electronic devices have electromagnetic waves scattered around them. This electromagnetic wave acts as an interfering electromagnetic wave for other electronic devices other than the electronic device that is emitting the electromagnetic wave. Further, such disturbing electromagnetic waves are not radiated only from the above-mentioned electronic devices, and as is well known, are also radiated from vehicles such as cars and motorcycles.

In order to shield such electromagnetic waves from the outside, electronic devices are generally covered with a metal housing. The electronic device is used not only alone but also in combination with other electronic devices. In such a case, electronic devices are connected to each other via a connector. The connector includes a plurality of conductive contacts. If such a contact is exposed to the outside, an interfering electromagnetic wave may enter the electronic device through the contact and adversely affect the electronic device. To shield the contacts from interfering electromagnetic waves, the connector has a structure in which the contacts are surrounded by a metal shell.

FIG. 6 shows the structure of a conventional connector with a shell. The shell-equipped connector has a connector main body and a pair of back shells 50 and 60 that are assembled by sandwiching 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.

The connector body has a substantially rectangular parallelepiped insulator 20, a plurality of conductive contacts 10 extending forward from the insulator 20, and a front surface of the insulator 20 to which the conductive contact 10 is attached. And a cylindrical front shell 40 for covering.

The front shell 40 has a tubular portion and a flange extending outward from the rear end of the tubular portion in a direction perpendicular to the axial direction of the tubular portion, and the front surface of the insulator 20 is attached to the flange. Abutting. The flange has four protrusions 42 (though only the top three protrusions are shown in the drawing) spaced apart from each other on both its upper and lower ends. These protrusions 42 are for positioning the upper back shell 50 and the lower back shell 60 when the connector body is assembled 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. A pair of square holes 51 are provided at both front ends of the upper surface of the upper back shell 50 at positions corresponding to the protrusions 42. These square holes 51 are for positioning the connector body when the connector body and the upper back shell 50 are assembled. That is, when the connector main body and the upper back shell 50 are assembled, the two protrusions 42 provided on the upper end of the flange of the front shell 40 are inserted into the square holes 51. Four protrusions 53 (however, only two protrusions on the right side of the drawing are shown in the drawing) are provided on the front and rear of both side surfaces of the upper back shell 50 so as to protrude inward. These protrusions 53 are for engaging with the lower back shell 60 described below.

The lower back shell 60 has a lower surface and both side surfaces, and has a substantially U-shaped cross section. The distance between both side surfaces of the lower back shell 60 is slightly shorter than the distance between both side surfaces of the upper back shell 50. That is, when the connector main body is assembled with the upper back shell 50 and the lower back shell 60, the outer walls of both side surfaces of the lower back shell 60 contact the inner walls of both side surfaces 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 for positioning the connector body when the connector body and the lower back shell 60 are assembled. That is, when the connector main body and the lower back shell 60 are assembled, the two protrusions 42 provided at the lower end of the flange of the front shell 40 are inserted into the square holes 61. Four square holes 63 are provided on the front and rear sides of both side surfaces of the lower back shell 60 at positions corresponding to the protrusions 53 of the upper back shell 50. These square holes 63 are for engaging with the upper back shell 50. That is, when the connector main body is assembled with the upper back shell 50 and the lower back shell 60, 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 inserted. And are fixed.

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

[0010]

[Problems to be solved by the device]

 As described above, in the conventional connector with shell, the front shell 40 of the connector body and the pair of back shells 50 and 60 are simply the projections 42 of the front shell 40 and the square holes of the pair of back shells 50 and 60. It is assembled by positioning with 51 and 61. For this reason, the conduction between the front shell 40 of the connector body and the pair of back shells 50 and 60 may not be performed reliably (satisfactorily). As a result, the conventional connector with shell has a drawback that the EMI countermeasure is incomplete.

On the other hand, in order to improve the electrical connection 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 projection 42 of the front shell 40 is slightly larger than the square holes 51 and 61 of the pair of back shells 50 and 60, and the projection 42 is press-fitted into the square holes 51 and 61. However, this method has a drawback that the number of assembling steps is large. Also in this method as well, the electrical continuity between the front shell 40 of the connector body and the pair of back shells 50 and 60 may become unstable.

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

[0013]

[Means for Solving the Problems]

 A connector with a shell to which the present invention is applied includes a connector main body having a front shell that covers a plurality of conductive contacts extending forward from an insulator, and a pair of back shells that are assembled by sandwiching the connector main body from above and below. ing.

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. , When the pair of back shells are combined with the connector body, they come into contact with at least one inner wall surface of the pair of back shells in a state of being elastically deformed, and between the front shell and at least one of the pair of back shells. Allows good continuity.

According to a second aspect of the present invention, at least one of the pair of back shells has a conductive spring member that protrudes inward from an inner wall surface thereof, and the conductive spring member includes a pair of back shells. When the shell is assembled with the connector body, the shell abuts at least one of the upper surface and the lower surface of the front shell in an elastically deformed state, and makes good contact between at least one of the pair of back shells and the front shell. Enable continuity.

[0016]

【Example】

 Hereinafter, the present invention will be described 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 basically has 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 connector main body shown in FIG. 6 are designated by the same reference numerals, and their description will be omitted.

In the present embodiment, the conductive spring member 41 has four positions on both ends farther away from the projections 42 at the upper end and the lower end of the flange of the front shell 40, and the direction in which the outer cylindrical portion extends. Project in the opposite direction. Here, the longest distance between the conductive spring members 41 facing each other in the width direction of the connector body is represented by a 1 as shown in FIG. 1 (d).

Further, the front shell 40 has an extending portion 43 which is stepped from the central portion of the rear end of the tubular portion and extends rearward in parallel with the central axis of the tubular portion. The extending portion 43 is provided with a square hole 43a, and the projection 21 of the insulator 20 is fitted in the square hole 43a.

Referring to FIGS. 2 and 3, the upper back shell 50 and the lower back shell 60 are assembled to the connector body shown in FIG. Here, as shown in FIG. 3, the distance between the inner wall of the upper surface of the upper back shell 50 and the inner wall of the lower surface of the lower back shell 60 after assembly is represented by b. At this time, the longest distance a (FIG. 1D) between the conductive spring members 41 described above is set to be longer than the distance b between the inner walls. That is, there is a relation of a> b. As a result, the conductive spring member 41 (FIG. 1) is elastically deformed to the inner wall surface of the pair of back shells 50 and 60 when the pair of back shells 50 and 60 is combined with the connector body. Will come into contact. Therefore, good conduction can be established between the front shell 40 and the pair of back shells 50 and 60. Therefore, the shell-equipped connector having the connector body shown in FIG. 1 can improve EMI countermeasures.

Note that, in FIG. 3, the rear end of the insulator 20 is covered with a cover 30.

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

Referring to FIG. 5, a shell-equipped connector according to another embodiment of the present invention is provided with a conductive spring member on the side of the pair of back shells 50 and 60 instead of the connector body. The configuration is similar to that of the above-described embodiment described with reference to FIGS. Therefore, components having the same functions as those of the above-described embodiment are designated by the same reference numerals, and their description will be omitted.

That is, the upper back shell 50 has conductive spring members 52 that project inward from two locations (only one location is shown in FIG. 4) on the inner wall surface of the upper surface thereof that are separated by a predetermined distance. Similarly, the lower back shell 60 has conductive spring members 62 protruding inward from two locations on the inner wall surface of the lower surface thereof. As shown in FIG. 5 (b), when the pair of back shells 50 and 60 and the connector main body are combined, the shortest distance between the pair of conductive spring members 52 and 62 facing each other is as follows. It is set so as not to be shorter than the longest distance in the width direction between the 40 extended portions 43. Therefore, the conductive spring members 52 and 62 are elastic to the upper surface and the lower surface of the extending portion 43 of the front shell 40 of the connector body when the pair of back shells 50 and 60 are combined with the connector body. Abut in the deformed state. Therefore, these elastic spring members 52 and 62 allow 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, the shell-equipped connector having the pair of back shells 50 and 60 having such a structure can improve the EMI countermeasure.

It is needless to say that the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit of the 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, but the conductive spring member is provided on the upper surface and the lower surface of the front shell. Both may be provided so as to project outward from one surface. Also, in the latter embodiment, the conductive spring member is provided so as to project 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 inward.

[0026]

[Effect of device]

 As described above, according to the present invention, since the conductive spring member is provided on the front shell and / or the back shell of the connector body, the assembly is easy, the conduction between the shells is surely established, and the EMI countermeasure is taken. It is possible to provide a connector with a shell having improved performance.

[Brief description of 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, (a) is a rear view,
(B) is a plan view, (c) is a front view, and (d) is a side view.

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

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a diagram showing a state in which a hood is attached to the one shown in FIG.
(A) is a plan view showing a half section, (b) is a front view,
(C) is a side view showing a half in section.

5A and 5B are views showing a structure of a connector with a shell according to another embodiment of the present invention, 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. It is a schematic side view containing the cross section seen from the VV line of a).

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

[Explanation of symbols]

 10 Contact 20 Insulator 21 Protrusion 30 Cover 40 Front Shell 41 Conductive Spring Member 42 Positioning Protrusion 43 Extension Part 50 Upper Backshell 51 Positioning Square Hole 52 Conductive Spring Member 53 Engaging Protrusion 60 Lower Backshell 61 Positioning Square Hole 62 Conductive spring member 63 Engaging square hole 70 Hood 80 Cable

Claims (2)

[Scope of utility model registration request] 1. A connector with a shell, comprising: a connector main body having a front shell that covers a plurality of conductive contacts extending forward from an insulator; and a pair of back shells that are assembled by sandwiching the connector main body from above and below. The front shell has a conductive spring member that protrudes outward from at least one of the upper surface and the lower surface of the front shell, and the conductive spring member is provided when the pair of back shells is combined with the connector body. And abutting on at least one inner wall surface of the pair of back shells in an elastically deformed state so that good conduction can be established between the front shell and at least one of the pair of back shells. Connector with shell. 2. A connector with a shell comprising a connector main body having a front shell that covers a plurality of conductive contacts extending forward from the insulator, and a pair of back shells that are assembled by sandwiching the connector main body from above and below. , At least one of the pair of back shells has a conductive spring member protruding inward from the inner wall surface thereof, the conductive spring member, when the pair of back shells are combined with the connector body, The front shell is in contact with at least one of the upper surface and the lower surface in a state of being elastically deformed, and good conduction can be established between at least one of the pair of back shells and the front shell. Connector with shell.