JPH04334884A - Connector with shield - Google Patents

Abstract

PURPOSE:To prevent the touch of fingers or outer members to terminals so as to prevent the electrostatic breakdown of equipment connected to the terminals, by providing a projecting conductor connected to ground voltage on the tip face of a separation wall provided with plug contacts on both sides. CONSTITUTION:A ribbonlike conductor layer 23 is provided on the front face of a separation wall of a plug insulator 22 along the longitudinal center line so as to connect between holes 22b for attaching to equipment provided in the vicinities of both longitudinal ends of the separation wall and to be slightly projected from the surface 22a' of the wall 22a around the hole 22b. When a plug shell 5 is attached to the insulator 22, it is contacted to the layer 23 in the vicinity of the hole 22b to be kept in the same voltage. Thereby even when the plug 21 is placed so as that fingers or outer members are accessible to terminals without caution, those are at first contacted to the layer 21, the shell 5, to discharge their electrostatic charge, hence the electrostatic breakdown of equipment connected to the terminals can be prevented.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to the configuration of a shielded connector for connecting devices to each other, which requires countermeasures against static electricity inside the connector. This invention relates to a shielded connector that prevents electrostatic damage to devices connected to the device and improves its characteristics as a connector.

[0002] In recent years, in the field of electronic equipment, there has been a strong demand for noise countermeasures and static electricity countermeasures due to electromagnetic fields from the outside world, so connectors that connect various electronic equipment devices also have metal shells around their terminals. Shielded connectors covered with

On the other hand, in recent electronic devices, as the amount of information increases, the connectors that connect devices have become multi-pole.
The terminal existing region, that is, the opening area surrounded by the metal shell is becoming larger.

[0004] Therefore, it is easy for fingers or external members to come into direct contact with the terminal portion surrounded by the metal shell, which may cause electrostatic damage to equipment connected to the terminal portion, and a solution to this problem is desired.

[0005]

2. Description of the Related Art FIG. 3 is a diagram illustrating an example of the configuration of a conventional shielded connector, and FIG. 4 is a diagram illustrating an example of a multi-pole connector.

In FIG. 3, a plug connector (hereinafter simply referred to as a plug) 1 has a plurality of straight plug terminals 2, each of which has a plug contact 2a at one end and an external connection terminal 2b at the other end. A plug connector body (hereinafter referred to as a plug body) 4 configured to be fixed to a plug insulator 3 so that its portions are in contact with and parallel to a partition wall 3a along the longitudinal direction, and the formation of the partition wall 3a of the plug insulator 3. The above plug contact 2a when attached to the surface side
A plug shell 5 made of a metal plate includes a peripheral wall 5a that surrounds the plug contact 2a arrangement area together with the partition wall 3a in a predetermined shape (for example, trapezoidal shape) at a height that covers the length of the plug contact 2a.
It is made up of.

[0007] The above-mentioned plug terminal 2 has a plug insulator 3.
A square hole 3b formed along the root of the partition wall 3a.
A protrusion 2c formed protruding in the thickness direction at a position close to the plug contact 2a of the plug terminal 2 is press-fitted into the insulator 3, thereby fixing it to the insulator 3.

On the other hand, a jack connector (hereinafter referred to as a jack) 6 that fits with the plug 1 has one end formed into a jack contact 7a that is bent into a chevron shape on one side, and the other end formed into a straight external connection terminal 7b. jack terminal 7
are fixed to the insulator 8 in contact with the inner surface of a peripheral wall 8a that is formed to protrude from one side of the jack insulator 8 so that the apexes of the jack contacts 7a face each other. (hereinafter referred to as the jack body) 9, and a jack shell 10 made of a metal plate that surrounds the outer surface of the peripheral wall 8a of the jack insulator 8 and is attached to the insulator 8. The outer surface of the shell 10 is a fitting surface 10a that fits with the inner surface 5b of the peripheral wall 5a of the plug shell 5 of the plug 1.
It has become.

Furthermore, the jack terminal 7 is connected to the plug terminal 2.
Similarly, a protrusion 7c protruding in the thickness direction is press-fitted into a square hole 3b formed along the inner root of the peripheral wall 8a of the jack insulator 8 at a position near where the jack contact 7a of the jack terminal 7 is removed. The insulator 8
It is designed to be fixed to each jack terminal 7.
are two jack contacts 7 facing each other by claws 8c provided near the opening along the longitudinal direction of the peripheral wall 8a of the insulator 8.
It is arranged on the jack insulator 8 so that the distance w1 between the vertices of a is smaller than the distance w2 between the surfaces of the two corresponding plug contacts 2a via the partition wall 3a. ing.

The fitting between the plug 1 and the jack 6 is such that, for example, the fitting of the plug 1 and the jack 6 is stopped at a position where the open end surface 10b of the jack shell 10 comes into contact with the partition forming surface 3c of the plug insulator 3. Therefore, by moving the plug 1 and the jack 6 in the direction of arrow A and fitting the shells together, each plug contact 2a of the plug 1 is inserted between each jack contact 7a of the jack 6 so that they face each other. Contact 7
The connection between the plug contact 2a and the jack contact 7a, and the connection between the plug 1 and the jack 6 can be realized by displacing a in the direction of opening.

[0011] Particularly in such a configuration, since each terminal arrangement area is shielded by each adjacent shell, it is possible to easily obtain a connector with required noise countermeasures and static electricity countermeasures.

However, if the terminal portion is inadvertently touched or touched by an external member, electrostatic damage may occur in equipment connected to the terminal. Furthermore, as the number of terminals to be connected increases and connectors become multipolar, the terminal arrangement area expands and the risk of contact with tentacles or external members increases.

FIG. 4, which is a cross section perpendicular to the longitudinal direction, shows a multi-polar connector, which accommodates an increase in the number of terminals by increasing the number of terminal rows in the width direction of the connector described in FIG. It is.

In the figure, 11 indicates a plug and 15 indicates a jack, but the plug 11 has a plurality of plug terminals 2.
and a plug insulator 12 having a plurality (three in the figure) of partition walls 12a and a plug shell 13 surrounding the partition walls 12a as in FIG. , a jack insulator 16 that arranges each jack terminal 7 at a position corresponding to each plug terminal 2 via a partition wall 16a, and a jack shell 17 that surrounds the area where the jack terminal 7 is arranged. The configuration is similar to that in FIG. 3.

The structure of each terminal, the means for engaging with the insulator, and the mutual relationship with each shell are the same as in the case of FIG. 3, so a detailed explanation will be omitted. Therefore, by moving the plug 11 and jack 15 in the direction of arrow B and fitting them between the shells, the plug 11
It is possible to realize connections between each plug terminal 2 and each jack terminal 7 of the jack 15, as well as between the plug 11 and the jack 15.

However, in this connector, the opening area of each shell is wider than in the case of FIG. Therefore, the risk of fingers or external parts coming into contact with the terminals is greater than in the case of Figure 3, resulting in an increased risk of electrostatic damage to devices connected to the terminals, and the characteristics of the connector deteriorate. It turns out.

[0017]

[Problems to be Solved by the Invention] In conventional shielded connectors, the terminals are easily touched by fingers or external parts, which can cause electrostatic damage to equipment connected to the terminals. There was a problem in that it was not possible to expect an improvement in productivity.

[0018]

[Means for Solving the Problems] The above problem is such that the plug contacts of the plug terminal are disposed in contact with both sides of the plug insulator via a partition wall that is longer than the plug contacts, and the arrangement area of the plug contacts is the partition wall. and a plug connector shielded by a plug shell having a height that covers the length of the plug contact, and the jack contact of the jack terminal is connected to the plug contact on both sides of the jack insulator through a partition wall that is longer than the jack contact. A shielded connector consisting of a jack connector which is arranged in a corresponding position and is shielded by a jack shell that fits with the plug shell, the plug insulator, the jack insulator, or both insulators forming a partition wall. A conductor layer is formed on the surface of the barrier rib forming surface from a position in contact with the plug shell or jack shell to a center line of the tip surface of the partition wall and protrudes from the tip surface at least in the region of the tip surface. This is accomplished using a shielded connector.

[0019]

[Operation] The first part of the shell that a finger or an external member comes into contact with inside the shell is the tip surface of the partition separating the terminals.

[0020] Therefore, in the present invention, a conductor connected to the same potential as the shell, that is, the ground potential, is disposed on the tip surface of each partition to constitute a connector, but this means that a finger or an external member first contacts the conductor. It means that.

[0021] Therefore, fingers or external members do not come into contact with the terminals, and electrostatic damage to devices connected to the terminals can be suppressed.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the principle of construction of a shielded connector according to the present invention, and FIG. 2 is a diagram illustrating a case where the shielded connector is implemented in a multi-pole connector.

[0023] In each of the figures, the case where the application is applied to a plug in which fingers or external members easily come into contact with the terminal is taken as an example.
, the same members as in FIG. 4 are denoted by the same symbols. In FIG. 1, the plug 21 has the straight plug terminal 2 described in connection with the plug 1 in FIG. The plug insulator 22 is held and fixed by the method described in FIG. 3, and the plug shell 5 described in FIG. 3 is attached to the insulator 22.

In this case, on the surface of the plug insulator 22 on the side where the partition wall is formed, there are two holes 22b for device mounting formed near both ends in the longitudinal direction. A strip-shaped conductor layer 23 is formed on the surface of the partition wall 22a along a center line extending in the longitudinal direction.

In particular, only the region of the tip surface 22a' of the partition wall 22a of the conductor layer 23 is shown in cross section a to a' (A).
The conductor layer 23 is formed to slightly protrude from the tip surface 22a', and the side surface 22a'' connected to the tip surface 22a' and the vicinity of the hole 22b have a cross section b.
As shown in (b) and (c) shown by -b' and c-c', the conductor layer 23 is embedded so as not to protrude from the surface of the surrounding insulator.

When the plug shell 5 is attached to the plug insulator 22, the conductor layer 23 comes into contact with the shell 5 near the hole 22b, so that the conductor layer 23 is brought to the same potential as the plug shell 5. can do.

In the plug 21 having such a structure, even when a finger or an external member is inadvertently placed in a position where it comes into contact with a terminal, the finger or external member first connects with the conductor layer 23 and eventually the plug shell 5, and static electricity is discharged. Therefore, electrostatic damage to devices connected to the terminals can be avoided.

In FIG. 2 showing an example of an embodiment, (2-1) is an overall configuration diagram, and (2-2) is a diagram showing a conductor layer for realizing the present invention. In (2-1) of FIG. 2, the plug 31 has the straight plug terminal 2 described in connection with the plug 1 of FIG. It is comprised of a plug insulator 32 that holds and fixes the plug terminal 2 in parallel in the manner described in FIG. 1, and a plug shell 13 described in FIG. 4 that is attached to the insulator 32.

In this case, on the surface of the plug insulator 32 on the side where the partition wall is formed, there are two holes 32b for device mounting formed near both ends in the longitudinal direction. A strip-shaped conductor 3 branches off from the center line and runs along the center line along the longitudinal direction of the surface of each of the three partition walls 32a.
3 is formed.

As explained in FIG. 3, the conductor 33 protrudes slightly from the tip surface 32a' only in the region of the tip surface 32a' of the partition wall 32a, and also in the side surface connected to the tip surface 32a'. 32a'' and the hole 3
As shown in FIG. 3, the vicinity of 2b is buried so as not to protrude from the surface of the surrounding insulator.

Therefore, by attaching the plug shell 13 to the plug insulator 32, the conductor 33 is
can be made to have the same potential as the plug shell 13. The plug 21 is, for example, a ring 33 whose center hole is the two holes 32b located at both ends, as shown in (2-2).
A conductor 33 made of nickel-plated brass or the like is formed by branching the gap between the plug insulator 32 into a path passing along the center line in the longitudinal direction of the surface of the partition wall 32a of the plug insulator 32, and the plug insulator 32 is resin-molded using a normal insert molding technique. It can be easily obtained by embedding it when doing so.

Furthermore, as another means for forming such a plug 21, when molding the plug insulator 32 with resin, a core having the same shape as the conductor 33 is attached to the plug insulator 32.
When set in the cavity and resin molded, a plug insulator having a recess corresponding to the core, that is, the conductor 33 is obtained. Therefore, by molding the insulator again as a core using a homogeneous molding material mixed with, for example, carbon powder, it is possible to obtain the required plug insulator 32 in which a conductor resin containing carbon is located as a conductor layer in the portion corresponding to the conductor 33. Can be done.

Therefore, as explained in FIG. 1, even if a finger or an external member is inadvertently placed in a position where it comes into contact with a terminal, the finger or external member connects with the conductor layer and eventually the plug shell 13, and static electricity is discharged. It is possible to configure a plug that can suppress electrostatic damage to devices connected to the terminal.

Although the above explanation is for the case where the plug is provided with a conductor layer, the partition wall 16a of the jack 15 explained in FIG.
It is clear that the same effect can be obtained by providing a similar conductor layer for the same.

[0035]

Effects of the Invention As described above, the present invention provides a shielded connector that improves the characteristics of a connector by preventing electrostatic damage to devices connected to the terminal due to contact with the terminal by tentacles or external members. can be provided.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of construction of a shielded connector according to the present invention.

FIG. 2 is a diagram illustrating a case where the method is applied to a multi-pole connector.

FIG. 3 is a diagram illustrating a configuration example of a conventional shielded connector.

FIG. 4 is a diagram illustrating an example of a multi-pole connector.

[Explanation of symbols]

2 Plug terminal
2a Plug contacts 5, 13 Plug shells 21, 31 Plug connectors 22, 32 Plug insulator
22a, 32a Partition wall 22a', 32a' Tip surface
22a″, 32a″ side

Claims (3)

[Claims] 1. A plug contact (2a) of a plug terminal (2) is disposed in contact with both sides of a plug insulator (22) via a partition wall (22a) that is longer than the plug contact (2a), and the plug a plug connector (21) in which the arrangement area of the contacts (2a) is shielded by a plug shell (5) having a height that covers the length of the plug contacts (2a) together with the partition wall (22a);
A jack connector in which a jack contact of a jack terminal is arranged at a position corresponding to the plug contact on both sides of the jack insulator via a partition wall longer than the jack contact, and is shielded by a jack shell that fits with the plug shell. A shielded connector consisting of a plug insulator (22), a jack insulator, or both insulators, on a partition forming surface of the insulator, and in contact with the plug shell (5) or jack shell on the partition forming surface. from the position to the center line of the distal end surface of the partition wall (22a), and at least in the region of the distal end surface (22a).
2a') A shielded connector characterized in that a conductor layer (23) is formed to protrude from the conductor layer (23). 2. The shielded connector according to claim 1, wherein the conductor layer formed on the partition forming surface of the insulator is formed by insert molding of a metal conductor (33). 3. The shielded connector according to claim 1, wherein the conductor layer formed on the partition forming surface of the insulator is formed of a resin conductor by secondary molding.