JPH06251828A - Electric connector - Google Patents

Abstract

PURPOSE:To provide an electric connector constituted of fewer part items in simple structure and capable of electromagnetic shielding. CONSTITUTION:In a printed wiring board 14 disposed in a plug 2, an electromagnetic shielding contact point 26 is formed in a position farther than an electric contact 18 from the view at the end on a side of a receptacle 30. An electromagnetic shielding contact 40 is fixed to a receptacle case 32 in such a position as to be brought into contact with the electromagnetic shielding contact point 26 when the plug 2 is inserted into the receptacle 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector for electrically connecting both by inserting a plug into a receptacle.

[0002]

2. Description of the Related Art As the above-mentioned electrical connector, for example, one disclosed in Japanese Patent Publication No. 44-28832 is known. Since this type of electrical connector is used in various fields, it is often necessary to electromagnetically shield the periphery of the connector.

In this case, for example, Japanese Patent Laid-Open No. 2-266314.
As disclosed in Japanese Patent Laid-Open Publication No. 58-4278 and Japanese Patent Laid-Open Publication No. 58-4278, a method of electromagnetically shielding the connector by covering at least one of the plug and the receptacle with a metallic tube is generally used.

[0004]

However, Japanese Patent Laid-Open No. 2-2
In the method disclosed in Japanese Patent No. 66314, only a small contact piece is attached to the plug side, and it is impossible to electromagnetically shield the entire periphery of the electrical connector.

According to the method disclosed in Japanese Patent Laid-Open No. 58-4278, it is necessary to provide an electromagnetic shield member separate from the electrical connector on both the plug and the receptacle. The connector must also have a structure for bringing these electromagnetic shield members into contact with each other.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrical connector which has a simple structure with a smaller number of parts than the conventional one, but which sufficiently performs electromagnetic shielding. is there.

[0007]

Accordingly, the electrical connector according to the present invention comprises a plug provided with an electric board having electrical contacts, and a structure capable of receiving the plug, which is electrically connected when the plug is inserted. An electrical connector comprising: a receptacle having an electrical contact with which an electrical contact of a substrate contacts, the electrical connector performing electrical connection between the two by inserting the plug into the receptacle,
An electromagnetic shield contact is formed at a position on the electric board that is farther than the electric contact when viewed from the insertion-side tip of the electric board, and an electromagnetic shield contact that can contact the electromagnetic shield contact is provided. It is characterized by being formed in a receptacle.

Further, the electric board is formed in a cylindrical shape, the electric contact is formed on the inner peripheral surface of the cylindrical electric board, and the electromagnetic shield contact is formed on the outer peripheral surface, and the plug is It is also characterized in that an electromagnetic shield contact that comes into contact with the electromagnetic shield contact when inserted into the receptacle is formed in the receptacle.

[0009]

In the above two electrical connectors according to the present invention, in the former case, when the plug is inserted into the receptacle, the electrical contacts of the electrical board and the electrical contacts of the receptacle come into contact with each other, and at the same time. The electromagnetic shield contact and the electromagnetic shield contact of the receptacle contact each other.

Further, in the latter case, when the plug is inserted into the receptacle, the electrical contact formed on the inner peripheral surface of the tubular electric board and the electrical contact of the receptacle come into contact with each other, and at the same time, the electric contact of the electric board is formed. The electromagnetic shield contact formed on the outer peripheral surface contacts the electromagnetic shield contact of the receptacle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the electrical connector according to the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 2 indicates a plug.
The plug 2 has a plug case 4 formed of a non-conductor. A through hole 6 is formed in the rear wall of the plug 2, and an electric cable 8 passes through the through hole 6. In this electric cable 8, there are four core wires 10
, And the comprehensive shield 12 passes.

An opening is formed in the front wall of the plug case 4, and the printed wiring board 14 is arranged so as to be located approximately halfway inside the case through this opening. The printed wiring board 14 constitutes an electric board. The end portion of the printed wiring board 14 protruding from the plug case 4 (hereinafter referred to as “insertion side end portion” and indicated by reference numeral 16) is
Four electrical contacts 18 are formed. Each of these electrical contacts 18 has four first through holes 20.
Electrically connected to.

An end portion of the printed wiring board 14 opposite to the insertion side end portion 16 (hereinafter referred to as "cable side end portion", reference numeral 22).
4), four second through holes 24 are formed. The core wires 10 of the electric cable 8 are soldered to the second through holes 24, respectively.

An electromagnetic shield contact 26 is formed between the first through hole 20 and the second through hole 24 over the entire circumference in the width direction of the printed wiring board 14. Specifically, the electromagnetic shield contact 26 is formed at a position farther than the electrical contact 18 when viewed from the insertion-side end 16 of the printed wiring board 14.

The electromagnetic shield contact 26 is arranged so as to be exposed from the plug case 4 by about half. The electromagnetic shield contact 26 is in electrical contact with a shield member 28 formed of a conductor and arranged in the plug case 4. The comprehensive shield 12 of the electric cable 8 is electrically connected to the rear wall of the shield member 28.

In this way, the plug case 4 substantially covers the components of the plug 2, and only the half of the printed wiring board 14 on the side of the insertion-side end 16 where the electrical contact 18 is provided and the electric cable 8 are provided. It is exposed from the plug case 4.

The printed wiring board 14 has a three-layer structure as shown in FIGS. The first layer 14a shown in FIG.
An electrical contact 18, first and second through holes 20 and 24, and an electromagnetic shield contact 26 are formed on the upper surface of the. The upper surface of the second layer 14b shown in FIG.
And a wiring 29 for electrically connecting the second through holes 20 and 24 to each other. Third layer 1 shown in FIG.
On the lower surface of 4c, the first and second through holes 20, 2 are provided.
4 and an electromagnetic shield contact 26 are formed.

The receptacle 30 for receiving the above-mentioned plug 2 is, as shown in FIG. 5, a receptacle case 32.
have. This receptacle case 32 is a screw 3
It is fixed to the inner surface of a housing 36 such as a signal processing device (not shown) by means of 4 or the like, and has a plug insertion opening corresponding to the opening of the housing 36. The housing 36 is made of a conductor, and the receptacle case 32 is grounded via the housing 36.

Inside the receptacle case 32, a contact case 38 made of a non-conductor is arranged at an end portion facing the plug insertion opening. The contact case 38 has approximately half the volume of the receptacle case 32.

A base end of an electromagnetic shield contact 40 is inserted between the receptacle case 32 and the contact case 38. The tip of the electromagnetic shield contact 40 extends to the front of the plug insertion opening of the receptacle case 32, and when the plug 2 is inserted into the receptacle 30 as shown in FIG. 5, the electromagnetic shield of the printed wiring board 14 is shielded. The contact 26 is contacted over the entire circumference of the wiring board 14.

An electrical contact 42 is fixed to the inner surface of the contact case 38. As shown in FIG. 5, the tip end portion of the electrical contact 42 is formed on the printed wiring board 14 when the plug 2 is inserted into the receptacle 30.
Contact the electrical contacts 18 of the. This electrical contact 4
The base end portion 2 extends outside the receptacle case 32 in a state of being wrapped in the base end portion of the contact case 38, and is electrically connected to, for example, an external terminal 44 connected to an electric circuit of the signal processing device. .

The operation of the electrical connector of the first embodiment thus constructed will be described below.

When the plug 2 is inserted into the receptacle 30, the electrical contact 18 of the printed wiring board 14 comes into contact with the tip of the electrical contact 42 on the receptacle 30 side.
At the same time, the electromagnetic shield contact 26 of the printed wiring board 14 comes into contact with the tip of the electromagnetic shield contact 40 on the receptacle 30 side. All the wiring 29 from the electrical contact 18 to the shield member 28 is electromagnetically shielded by the electrical contact between the electromagnetic shield contact 26 and the contact 40 and the receptacle case 32 and the housing 36 formed of a conductor. .

As described above, in the present embodiment, the plug 2 is not provided with a member that is formed separately and specially for electromagnetic shielding, and the electromagnetic shield contact 26 is formed on the printed wiring board 14 to generate the electromagnetic shield. The electrical connector can be electromagnetically shielded.

The core wire 10 is fixed to the printed wiring board 14, and the shield member 28 is connected to the electromagnetic shield contact 26.
However, the method of fixing the integrated shield 12 to the shield member 28 is not limited to soldering, and may be fixed by pressing with a member such as a screw.

The first layer 14a of the printed wiring board 14
The method of electrically connecting the electrical contact 28 of the second layer 14b to the wiring 29 of the second layer 14b is not limited to the through hole, and for example, as shown in FIG. The electrical contact 28 may extend from the surface of the layer 14a to the position corresponding to the wiring 29 on the surface of the second layer 14b.

Further, in the plug 2, the shield member 2
8 is not used, as shown in FIG.
Can be directly soldered to the electromagnetic shield contact 26. By doing so, the shield member 28 is not required, so that the assembling property can be improved.

Next, a second embodiment will be described with reference to FIGS. The same members as those in the first embodiment are designated by the same reference numerals, and only different points will be described. Hereinafter, similar description will be made in the third to ninth embodiments.

In the structure of the first embodiment, as shown in FIG. 8, the insertion side end portion 26 (shown in FIG. 1) of the printed wiring board 14 is inserted into the plug insertion opening of the receptacle 30 (shown in FIG. 5). When connecting, the electrical contact 18 and the electrical contact 42 are connected (hereinafter referred to as “electrical connection”).
However, the connection is performed before the connection between the electromagnetic shield contact 26 and the electromagnetic shield contact 40 (hereinafter referred to as “shield connection”). With this configuration, when the plug is inserted into or removed from the receptacle, electrical connection is made without shield connection being made. Therefore, when radiated noise is generated at the moment when electrical connection is made, this radiated noise may not be shielded.

In consideration of such a case, in this embodiment, the electromagnetic connection on the receptacle side is made so that the shield connection, that is, the connection between the electromagnetic shield contact 26 and the electromagnetic shield contact 40 is performed prior to the electrical connection. The distance between the shield contact 40 and the electrical contact 42 is shown in FIG.
As shown in, the width is made wider than that of the first embodiment. Then, the shield connection is always performed before the electrical connection is performed, and the shield connection is performed after the electrical connection is performed. In this way, the shield effect does not disappear when the plug is attached or detached, and the noise emitted is reduced.

Further, in the structure of the second embodiment, if the electromagnetic shield contact 40 and the GND contact are made common, it is effective as a countermeasure against CCD latch-up, for example.

Next, a third embodiment will be described with reference to FIG.

In this embodiment, the printed wiring board 14 is shown in FIG.
As shown in 0, it is formed in a rectangular tube shape, and the electric contact 18 is formed on the inner peripheral surface thereof, and the electromagnetic shield contact 26 is formed on the outer peripheral surface thereof. Further, also on the receptacle side, an electrical contact and an electromagnetic shield contact are formed so as to be able to contact the electrical contact 18 and the electromagnetic shield contact 26, respectively.

In this way, the printed wiring board 14 is
There is no need to configure more than one layer, and there is no need for means for connecting the layers. Furthermore, if the configuration shown in FIG. 7 is adopted, effective shielding can be performed as compared with the case where a flat printed wiring board is used.

The shape of the printed wiring board 14 is shown in FIG.
The rectangular tube shape as shown in 0 may be replaced by a polygonal tube shape or a cylinder shape, and the effect of the present embodiment can be achieved as long as it is a tube shape.

Next, a fourth embodiment will be described with reference to FIGS. 11 to 13.

In the first to third embodiments, when the plug 2 is inserted into the receptacle 30, the printed wiring board 14 is inserted.
The electrical contact 18 of the first slides on the shield contact 40 on the side of the receptacle 30 and then slides on the electrical contact 42 to come into contact with the electrical contact 42. As a result, the electrical contact 18 is changed with respect to the number of times the plug 2 is inserted into and removed from the receptacle 30.
Slides twice as many times, so that the electrical contact 18 is severely deteriorated.

Therefore, in this embodiment, as shown in FIG. 11, a step 46 in the thickness direction of the printed wiring board 14 is formed between the electrical contact 18 of the printed wiring board 14 and the electromagnetic shield contact 26. , The thickness of the electrical contact 18 and the electromagnetic shield contact 2 in the thickness direction of the printed wiring board 14.
6 and the thickness of 6. Then, the spacing between the two electrical contacts 42 and the spacing between the two electromagnetic shield contacts 40 are set in correspondence with the electrical contacts 18 and the electromagnetic shield contacts 26 having different thicknesses.

There are various methods for forming the step 46. For example, as shown in FIGS. 12 (A) and 12 (B), metal plates 48 are bonded to the upper and lower sides of the electromagnetic shield contact 26 in a close contact state. Things can be considered. This joining is performed by soldering the end face of the metal plate 48 to the electromagnetic shield contact 26.

In FIGS. 13A and 13B, the metal plate 4
Instead of 8, another printed circuit board 50 is bonded to the electromagnetic shield contact 26 by soldering in a close contact state.

If the step 46 is formed in this way, the plug 2
Since the electrical contact 18 does not come into contact with the shield contact 40 when the electrical contact 18 is inserted into or removed from the receptacle 30, deterioration due to sliding of the electrical contact 18 can be reduced.

Although the thickness of the electromagnetic shield contact 26 is larger than the thickness of the printed wiring board 14 in FIGS. 12 and 13, the thickness of the electromagnetic shield contact 26 is larger than that of the printed wiring board 14. The object of the present embodiment can be achieved also by forming recesses in a stripe shape and arranging the electrical contacts 18 in these recesses. Next, a fifth embodiment will be described with reference to FIGS. 14 and 15.

As shown in FIG. 14, the printed wiring board 14
A lock arm 52 extends from the upper surface of the wiring board 14 away from the insertion-side end 16 of the wiring board 14 and slightly upward. This lock arm 52
A releasing portion 54 having fine irregularities formed on the surface thereof so as to have a large friction coefficient is formed at the tip portion of the. A lock part 56 having a triangular cross section is formed in the middle of the lock arm 52.

Inside the receptacle case 32, an electrical contact 42 that can come into contact with the electrical contact 18 and a protrusion 58 that meshes with the lock portion 56 are formed.

When the plug 2 is inserted into the receptacle case 32, the upper surface of the lock arm 52 and the lower surface of the protrusion 58 slide, and the lock arm 52 is pushed downward. The electrical contacts 18 make contact with the electrical contacts 42 when inserted. After that, when the lock arm 52 is inserted until the lock portion 56 reaches the protrusion 58, the lock portion 56 and the protrusion 58 are brought into a state in which they can mesh with each other, and the lock portion is urged by the lock arm 52 itself. 56 is displaced upward and engages the protrusion 58. By this engagement, the plug 2 is locked with respect to the receptacle case 32. At this time, the release portion 54 is in a state of protruding from the receptacle case 32.

When the plug 2 is pulled out from the receptacle case 32, the release portion 54 projecting from the receptacle case 32 is pushed down to release the engagement between the lock portion 56 and the projection portion 58, that is, the lock.

With such a structure, it is possible to provide the lock mechanism which enables the plug 2 to be securely mounted with a simple structure and which can be arbitrarily and easily released.

Next, a sixth embodiment will be described with reference to FIGS. 16 and 17.

In the present embodiment, contrary to the fifth embodiment, the lock arm 52 is formed integrally with the receptacle case 32. More specifically, the lock arm 52 is formed in an L shape having two arm portions. One arm portion of the lock arm 52 has a release portion 54,
This arm portion is exposed from the receptacle case 32 so that a user can operate the release portion 54. A lock portion 56 is formed on the lower surface of the joining portion of the two arm portions. The printed wiring board 14 is formed with a guide groove 60 extending along the insertion / removal direction with respect to the receptacle case 32. At the end of the guide groove 60, a recess 62 having a greater depth than the groove 60 and capable of engaging with the lock portion 56 is connected.

When the plug 2 is inserted into the receptacle case 32, the lock portion 56 of the lock arm 52 slides on the bottom surface of the guide groove 60 of the printed wiring board 14. When the electrical contact 18 comes into contact with the electrical contact 42 and the electrical connection is made, the lock portion 56 and the recess 62 are engaged with each other, and the plug 2 is locked in the state of being mounted in the receptacle case 32.

The other constitution, operation and effect of this embodiment are as follows.
This is similar to the fifth embodiment.

Next, a seventh embodiment will be described with reference to FIGS.

In this embodiment, as shown in FIGS. 18 and 19, the electromagnetic shield contact 26 is formed in a plate shape. On the electromagnetic shield contact 26, a locking portion 64 formed of a substantially triangular pyramidal recess is formed.

The electromagnetic shield contact 40 mounted near the plug insertion opening in the receptacle case 32 is a short cylinder having a conical shape at its tip. The conical portion at the tip of the electromagnetic shield contact 40 can be engaged with the locking portion 64 on the electromagnetic shield contact 26.

The electromagnetic shield contact 40 is attached to the receptacle case 32 via an elastic body 66, and the electromagnetic shield contact 26 is attached by the elastic body 66.
Pressed against. Also, the electromagnetic shield contact 4
A shield line 68 for passing a signal from the electromagnetic shield contact 26 to a ground-in (not shown) is electrically connected to 0.

When the printed wiring board 14 is inserted into the receptacle case 32, the conical portion at the tip of the electromagnetic shield contact 40 is pressed against the electromagnetic shield contact 26 by the elastic body 66, and the electromagnetic shield contact 26 is locked. It engages with the portion 64 and comes into contact with the electromagnetic shield contact 26 for electrical conduction, after which the electrical contact 42 and the electrical contact 18 are connected. When the electromagnetic shield contact 40 and the locking portion 64 are inserted to a position where they coincide with each other, the electromagnetic shield contact 40 engages with the locking portion 64 by the urging force of the elastic body 66 as shown in FIG. The printed wiring board 14 is locked in the receptacle case 32, so that the electromagnetic shield contact 26 is surely conducted.

At this time, by securely connecting the electromagnetic shield contact 40 and the locking portion 64, unnecessary noise such as radio waves can be absorbed by the electromagnetic shield contact 26 and passed through the shield wire 68. As a result, the influence of noise can be eliminated.

Next, an eighth embodiment will be described with reference to FIG.

In the seventh embodiment, the electromagnetic shield contact 26
Although the engaging portion 64 formed in the above is a concave portion, in the present embodiment, it is a convex portion protruding with respect to the printed wiring board 14. A space exists between the locking portion 64 and the printed wiring board 14, and the locking portion 6 is provided due to the existence of this space.
4 becomes deformable in a predetermined range, and as a result, the locking portion 64 functions as a leaf spring. The electromagnetic shield contact 40 of the receptacle case 32 is formed in a concave shape so as to correspond to the locking portion 64. The other structure is similar to that of the seventh embodiment.

When the printed wiring board 14 having the above structure is inserted into the receptacle case 32, the electromagnetic shield contact 26 is inserted.
The locking portion 64 of the electromagnetic shield contact 40 is connected to the electromagnetic shield contact 40 by the function of the leaf spring.
The electrical connection between the shield wire 68 and the shield wire 68 is ensured.

Other functions and effects are similar to those of the seventh embodiment. Although the locking portion 64 is formed integrally with the electromagnetic shield contact 40 in this embodiment, it may be formed separately.

Before moving on to the description of the ninth embodiment, the technical background for devising the ninth embodiment will be described.

The electric board 69 of the conventional electric connector is
As shown in (A) to (D) of FIG. 23, each is basically composed of two substrates each having two or more layers, that is, first and second substrates 70 and 72. Formed on the first substrate 70 are a plurality of first electrical contacts 74 that come into contact with contacts on the receptacle side (not shown), and a plurality of first electrodes 76 to which signal lines are connected. The second substrate 72 also has a plurality of second electrical contacts 78 and second electrodes 80 formed thereon. The second electrical contact 78 and the second electrode 8
As shown in (B) of FIG. 23, 0 is arranged in a state of being displaced by half a pitch with respect to the first electrical contact 74 and the first electrode 76.

Electromagnetic shield contacts 82 are formed on the surfaces of the first and second substrates 70 and 72 between the electrical contacts 74 and 78 and the electrodes 76 and 80.

A wiring 84 is formed between the first substrate 70 and the second substrate 72. In addition, the first and second substrates 70 and 72 are respectively formed with through holes 86 that are electrically connected to the wiring 84. By the wiring 84 and the through hole 86, the first and second electrical contacts 7
4, 78 and the first and second electrodes 76, 80 are electrically connected to each other.

With such a conventional structure, although two substrates are used to increase the density, the electrical contacts 74,
Since the 78 and the electrodes 76, 80 are arranged in the first substrate 70 and the second substrate 72 in a state of being shifted from each other by a half pitch, it is possible to widen the width of the electrical contacts and the electrodes. It is not possible to prevent further densification. Also,
The strength is low and the cost is high because only two substrates are bonded together.

Therefore, in the electric board 87 of the present embodiment, as shown in FIG.
As shown in FIG. 2, the first and second substrates 88 and 90 each have a single layer, and the insulating substrate 92 is sandwiched between these two single layer substrates 88 and 90. Therefore, the configuration of the electric substrate 87 in this embodiment is the same as that of the first substrate 88 and the insulating substrate 9
2 and a second substrate 90 have a three-layer structure. On the first and second substrates 88 and 90, a plurality of extremely simple straight electrical contacts 94 are formed, respectively.

The base end portion of the electric board 87 is a holding portion 96.
It is fixed to. An electric cable is connected to an end portion (not shown) of the handheld portion 96. A conductor 98 is stretched around the outer periphery of the tip of the handheld portion 96. The conductor 98 is connected to the ground 100, one of the electrical contacts 94. A notch 102 is formed on one side of the tip of the insulating substrate 92, and the direction is determined.

By constructing the electric substrate 87 in this manner, the width of the electrical contact 94 or the electrode can be widened, and the density can be increased. Further, by using the insulating substrate 92, the strength of the electric substrate 87 itself is increased and the cost is reduced.

[0071]

It is an object of the present invention to provide an electrical connector having a simple structure and electromagnetic shielding with a smaller number of parts.

[Brief description of drawings]

FIG. 1 is a perspective view showing a plug of a first embodiment of an electrical connector according to the present invention.

FIG. 2 is a top view showing a first layer of the printed wiring board shown in FIG.

FIG. 3 is a top view showing a second layer of the printed wiring board shown in FIG.

FIG. 4 is a bottom view showing a third layer of the printed wiring board shown in FIG.

5 is a sectional view showing a state in which the plug shown in FIG. 1 is inserted into a receptacle.

FIG. 6 is a perspective view showing a modified example of the printed wiring board in the first embodiment.

FIG. 7 is a perspective view showing a modified example of the electromagnetic shield in the first embodiment.

FIG. 8 is a side view of the printed wiring board of the first embodiment for comparison with the electrical connector of the second embodiment.

FIG. 9 is a side view showing a printed wiring board of the electrical connector of the second embodiment.

FIG. 10 is a perspective view showing a printed wiring board of an electrical connector of a third embodiment.

FIG. 11 is a cross-sectional view showing the electrical connector of the fourth embodiment and showing a state in which the plug is inserted into the receptacle.

12A and 12B show an example of a method of forming a step on a printed wiring board in a fourth embodiment, FIG. 12A is a perspective view thereof, and FIG. 12B is a side view thereof.

13A and 13B show another example of a method of forming a step on a printed wiring board according to the fourth embodiment, where FIG. 13A is a perspective view thereof, and FIG.
Is the side view.

FIG. 14 is a perspective view showing a plug of an electrical connector of a fifth embodiment.

FIG. 15 is a partially cutaway side view showing a state in which the plug shown in FIG. 14 is about to be inserted into a receptacle.

FIG. 16 is a perspective view showing a plug of an electrical connector of a sixth embodiment.

FIG. 17 is a partially cutaway side view showing a state in which the plug shown in FIG. 16 is about to be inserted into a receptacle.

FIG. 18 is a partially cutaway top view showing an electrical connector of a seventh embodiment.

19 is a vertical cross-sectional view of the electrical connector shown in FIG.

20 is an enlarged view of the electromagnetic shield contact shown in FIG.

FIG. 21 is a vertical sectional view showing an electrical connector of an eighth embodiment.

FIG. 22 is a perspective view showing an electric board according to a ninth embodiment.

FIG. 23 is a view for explaining a conventional electric board,
(A) is a top view, (B) is a front view, (C) is a side view, and (D) is a bottom view.

[Explanation of symbols]

2 ... Plug, 12 ... General shield, 14 ... Printed wiring board, 18 ... Electrical contact, 26 ... Electromagnetic shield contact, 2
8 ... Shield member, 30 ... Receptacle, 40 ... Electromagnetic shield contact, 42 ... Electrical contact.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Issei Kobayashi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Atsushi Kiwata 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Kenji Omachi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Tadayoshi Hara 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.

Claims (2)

[Claims] 1. A plug provided with an electric board having electric contacts, and an electric contact which is configured to be capable of receiving the plug and which contacts the electric contacts of the electric board when the plug is inserted. An electrical connector comprising: a receptacle having; and an electrical connection between the two by inserting the plug into the receptacle, wherein the electrical connector is located at a position on the electrical board and viewed from a tip of an insertion side of the electrical board. An electrical connector characterized in that an electromagnetic shield contact is formed at a position farther than the contact, and an electromagnetic shield contact capable of contacting the electromagnetic shield contact is formed in the receptacle. 2. A plug provided with an electric board having electric contacts, and an electric contact which is configured to be capable of receiving the plug and which contacts the electric contacts of the electric board when the plug is inserted. An electrical connector comprising: a receptacle having the receptacle, wherein the plug is inserted into the receptacle to electrically connect the receptacle and the receptacle. The receptacle is configured in a tubular shape, and the electrical contact is formed in the receptacle. An electromagnetic shield contact is formed on the inner peripheral surface of each of the outer peripheral surfaces, and an electromagnetic shield contact that contacts the electromagnetic shield contact when the plug is inserted into the receptacle is formed on the receptacle. An electrical connector characterized by.