JP2522156B2 - Plug connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backboard plug connector connected to a substrate or the like for transmitting an electric signal.

[0002]

2. Description of the Related Art FIG. 4 is an exploded perspective view of a conventional plug connector, and FIG. 5 is a sectional view taken along the line VV of FIG. 4. The conventional plug connector will be described with reference to these figures. Reference numeral 20 denotes the entire plug connector, and reference numeral 2 denotes a flat plate-shaped terminal piece having a plurality of contacts 3 protruding in a comb shape. 4 is a printed circuit board on which the contact 3 is inserted,
Through holes 5 are formed to be electrically connected to the wiring pattern. Reference numeral 21 is a plug housing formed of an insulating member and having a U-shaped cross-section, and a plurality of mounting holes 22 arranged in a lattice pattern are formed on the bottom surface.

The plug connector 20 constructed in this way
In order to assemble, the contact 3 of the terminal piece 2 is press-fitted into the mounting hole 22 of the plug housing 21, and then the contact 3
The connecting portion 2a between them is cut, and then the contact 3 is inserted into the mounting hole 22 of the printed circuit board 4 and electrically connected to the wiring pattern of the printed circuit board 4 by soldering or solderless connection.

[0004]

However, in the above-mentioned conventional plug connector, since only the plug housing 21 made of an insulating member is interposed between the contacts 3, the high density accompanying the increase in capacity of electric signals is provided. Due to the increase in speed and speed of signals, there is a problem that crosstalk between the contacts 3 increases and characteristic impedance deteriorates, and noise also occurs.

Therefore, the present invention has been made in view of the above points, and it is an object of the present invention to improve the transmission characteristics of a connector with respect to high density and high speed of an electric signal accompanying a large capacity of an electric signal. In particular, it is to provide a plug connector with improved crosstalk and enhanced ground.

[0006]

To achieve this object, the plug connector according to the present invention is formed in a U-shaped cross section.
Multiple plugs into the mounting holes on the bottom of the plug housing.
Press in the contactors and press the contactors
Implant it on the printed circuit board to
A plug connector that is electrically connected,
A protrusion with a mounting hole for press-fitting the contact
An insulating plate is provided, and the convex portion is provided on the bottom surface of the plug housing.
This plug housing has a fitting hole for fitting
The entire surface of the group is metal-plated. Also,
The plug connector according to the present invention has a bottom of a plug housing.
At least one mounting hole of the same shape as the mounting hole of the convex part on the surface
It has been drilled.

[0007]

According to the present invention, since the conductive member is interposed between the plurality of contacts, it is shielded and noise is prevented from entering. Further, according to the present invention, since the conductive member and the contact are electrically connected, the ground of the plug connector can be reinforced through the contact.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a plug connector according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is III-II of FIG.
It is a sectional view taken along line I. In these drawings, the same components as those of the conventional technique are designated by the same reference numerals, and detailed description thereof will be omitted. Reference numeral 1 denotes the entire plug connector, 6 is an insulating plate, and a plurality of convex portions 7 arranged in three rows in a lattice are projected on the upper surface formed in a flat plate shape. The convex portion 7 has a rectangular parallelepiped shape, and a contact mounting hole 8 is formed in the center thereof. Three
Among the rows of the convex portions 7 arranged in rows, the convex portions 7 are not provided at both ends of the central row, and a pair of mounting holes 9 having the same shape as the mounting holes 8 are provided.

Reference numeral 10 designates a plug housing which is made of plastic and which constitutes a conductive member having a metal plating on the entire surface thereof. The plug housing has a U-shaped cross section and a lattice shape at a position corresponding to the convex portion 7 on the bottom surface. A plurality of fitting holes 11 having a rectangular cross section are arranged, and a pair of mounting holes 12 are formed at positions corresponding to the mounting holes 9.

Next, a method of assembling the plug connector 1 thus constructed will be described. First, the convex portion 7 of the insulating plate 6 is fitted into the hole 11 of the plug housing 10 to temporarily assemble the insulating plate 6 and the plug housing 10. Next, terminal piece 2
The contact 3 is press-fitted into the mounting holes 8 and 9 of the insulating plate 6, and the contact 3 press-fitted into the mounting hole 9 is press-fitted into the mounting hole 12 of the plug housing 10. After that, the connecting portion 2a between the contacts 3 is cut, the contacts 3 are inserted into the mounting holes 22 of the printed circuit board 4, and are electrically connected to the wiring pattern of the printed circuit board 4 by soldering or solderless connection.

In the plug connector 1 assembled in this way, the plug housing 10 which is a conductive member is interposed between the contacts 3, so that it is shielded by the plug housing 10 and noise can be prevented from entering. Crosstalk between them is reduced, and a constant value can be obtained for the characteristic impedance.
It is possible to obtain stable transmission characteristics with respect to speeding up of signals.

Of the contacts 3, a pair of contacts at both ends in the center are conductive members.
Since it is electrically connected to 0 through the mounting hole 12,
By connecting these contacts to the ground terminal portion of the printed board 4, it becomes possible to easily strengthen the ground.

Further, the insulating plate 6 fixing the contact 3 is provided with a convex portion 7 surrounding a mounting hole 8 into which the contact 3 is press fitted, and the convex portion 7 is a plug housing 10 which is a conductive member. Since the protrusion 7 is fitted in the fitting hole 11 of the plug housing 10 and is surrounded by the bottom surface of the plug housing 10,
The exposed thickness of the insulating plate 6 is reduced from t ₂ to t ₁ . As described above, the characteristic impedance can be stabilized by reducing the thickness of the insulating member surrounding the contact 3, that is, the electrically exposed portion, and the thickness t1 can be further reduced. It's nothing like that.

[0014]

As described above, according to the present invention, the multiple
Form a protrusion with mounting holes to press fit several contacts.
Equipped with an insulating plate,
This plug housing is provided with a fitting hole into which the protrusion fits.
Insulation by applying metal plating to the entire surface of the ring
Conductive member intervenes between multiple contacts planted in the plate
Therefore, this conductive member shields the contacts, prevents the intrusion of noise, reduces the crosstalk between the contacts, can obtain a constant value in the characteristic impedance, and can improve the signal speed. On the other hand, stable transmission characteristics can be obtained. Insulation plate
Allows you to install multiple contactors at once
The insulating plate's convex part to the plug housing's fitting hole.
Simply attach the contactor to the plug housing.
Since it can be attached, multiple contactors can be plugged together.
As it can be assembled to the housing, it is easy to assemble.
Become. In addition, the entire surface of the plug housing should be
Since the plating is done, the work of plating is not complicated.
The plating work can be done in a short time without
It is inexpensive because only the surface is plated.

Moreover, since at least one of the plurality of contacts is electrically connected to the conductive member, the ground of the plug connector can be reinforced through the contacts.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a plug connector according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an exploded perspective view of a conventional plug connector.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug connector 2 Terminal piece 3 Contact 4 Printed circuit board 6 Insulation plate 7 Convex part 8 Mounting hole 9 Mounting hole 10 Plug housing 11 Fitting hole 12 Mounting hole

Claims (2)

(57) [Claims] 1. A plug housing having a U-shaped cross section.
If multiple contactors are press-fitted into the mounting holes on the bottom of the
By implanting these contactors on the printed circuit board,
Plug electrically connected to the printed circuit board wiring pattern
In the connector, press-fit the plurality of contacts.
An insulating plate having a protrusion formed with a perforated hole is provided.
Insert a fitting hole in the bottom of the lug housing to fit the protrusion.
Perforate and metallize the entire surface of this plug housing.
A plug connector characterized by being plated. 2. The plug connector according to claim 1.
The same shape as the mounting holes on the bottom of the plug housing.
At least one mounting hole for
Lug connector.