JP2003031301A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector capable of reducing frictional resistance in fitting and providing positive fitting. SOLUTION: The electric connector is characterized by that it has a male connector comprising a plug contact provided so as to protrude in a box-shaped housing with one opened end and a guide pin provided in an opening side of the housing, and a female connector comprising a jack contact provided so as to protrude in a box-shaped housing with one opened end and a part fitting with the guide pin and the plug contact provided on the jack contact inside the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector composed of a male connector and a female connector.

[0002]

2. Description of the Related Art An electrical connector has a structure in which a male connector and a female connector are provided with contact portions, and by connecting them, electric power, signals and the like are conducted. Figure 4
Shows a conventional electrical connector. The male connector 1 is attached to the printed circuit board 3 via the plug housing 2. The plug housing 2 has a plug contact 4
Is provided. The female connector 5 is attached to the printed circuit board 7 via the jack housing 6. A jack contact 8 is provided on the jack housing 6. The jack contact 8 has a contact portion 9 formed at its tip.

In the conventional electrical connector thus constructed, for example, the male connector 1 is moved in the direction of the arrow to press the plug contact 4 into the contact portion 9 of the jack contact 8 so that the plug contact 4 and the jack contact 8 are inserted. It is designed to connect with.

[0004]

However, in the conventional electrical connector, when the male connector 1 and the female connector 5 are connected, the plug contact 4 is fitted into the contact portion 9 of the jack contact 8 at the time of fitting. Until the above is completed, the plug contact 4 continues to receive the frictional resistance due to the contact portion 9. As a result, the load due to the frictional resistance when inserting and pulling out the plug contact 4 from the jack contact 8 is large, and a large force is required for fitting.

Further, the plug contact 4 and the jack contact 8 may be worn at the time of insertion and withdrawal to deteriorate the quality. Further, the force at the time of fitting directly affects the printed circuit boards 3 and 7, and the quality of the printed circuit boards 3 and 7 may be deteriorated due to warping, bending, and the like. In addition, it is difficult to know whether the male connector 1 and the female connector 5 are securely fitted.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide an electric connector which reduces frictional resistance at the time of fitting and enables reliable fitting. Especially.

[0007]

The invention according to claim 1 is
In a box-shaped housing having one end opened, a plug contact is provided so as to project into the housing, and a male connector is provided with a guide pin on the opening side of the housing, and a box-shaped housing having one end opened, a jack. The connector is characterized in that the contact is provided so as to project into the housing, and the jack contact in the housing has a female connector in which a fitting portion for the guide pin and the plug contact is provided.

According to a second aspect of the present invention, in the electrical connector according to the first aspect, the guide pin has a cylindrical shape and is located on an extension line of the plug contact. According to a third aspect of the present invention, in the electric connector according to the first or second aspect, the fitting portion of the jack contact includes a bifurcated contactor, and both contactors have spring elasticity capable of moving close to and away from each other. It is characterized by

According to a fourth aspect of the present invention, in the electrical connector according to the third aspect, the both contactors are guide pin fitting portions located on the wall surface side of the housing from which the jack contacts project, and the guide pins. A contact joint portion that is connected to the fitting portion, and between the guide pin fitting portion and the contact joint portion, protrusions are arranged to face each other at intervals smaller than the diameter of the guide pin, A contact surface that abuts a side wall portion of the plug contact is arranged opposite to the tip portion.

According to a fifth aspect of the present invention, in the electric connector according to any one of the first to fourth aspects, the male connector has a wall surface of the housing from which the plug contact projects, and It is characterized in that a guide projection for guiding both the contacts to the side wall side of the plug contact is provided. The invention according to claim 6 is
The electrical connector according to claim 1, wherein a width of the plug contact is larger than a space between the fitting portions.

According to a seventh aspect of the present invention, in the electric connector according to the first aspect, the male connector and the female connector are coupled by fitting the housing of the female connector into the housing of the male connector. It is characterized by The invention according to claim 8 is the connector according to any one of claims 1 to 7, characterized in that the guide pin is made of a material having a small frictional resistance.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the drawings. 1 to 3 show an electrical connector 10 according to one embodiment of the invention (corresponding to all claims). The electrical connector 10 according to the present embodiment is
A male connector 20 attached to the printed circuit board 13;
It is composed of a female connector 30 attached to the printed circuit board 15. In the male connector 20 and the female connector 30, the housing 31 of the female connector 30 is connected to the male connector 20.
It is adapted to be coupled by being fitted into the housing 21 of the.

The male connector 20 includes a box-shaped resin housing 21 having an opening at one end, and a plug contact 22 made of a flat plate whose end is chamfered.
It is integrally provided so as to project inward. A columnar guide pin 23 is integrally provided on the opening 21a side of the housing 21. The guide pin 23 is located on the extension line of the plug contact 22. Since the guide pin 23 is made of a resin material, friction resistance is reduced.

In the housing 21, both contacts 33a, 33b of the jack contact 32 are attached to the wall surface 21b on the side opposite to the opening 21a (that is, the wall surface 21b of the housing 21 from which the plug contact 22 projects).
Two guide protrusions 24 for guiding the two side walls 22a and 22b are provided. The female connector 30 is integrally provided in a box-shaped resin housing 31 having one end opened so that the jack contact 32 projects into the housing 31. The jack contact 32 in the housing 31 is provided with a fitting portion 33 for the guide pin 23 and the plug contact 22.

The fitting portion 33 of the jack contact 22 is provided with bifurcated contacts 33a and 33b, and both contacts 3
3a and 33b have spring elasticity capable of approaching and separating. The contacts 33a and 33b are located on the wall surface 31a side of the housing 31 from which the jack contact 32 projects, and are connected to the guide pin fitting portion 34 into which the guide pin 23 of the housing 31 is fitted, and the guide pin fitting portion 34. In addition, the plug contact 22 and the contact joint portion 35 that is in surface contact are provided. The guide pin fitting portion 34 has an outer diameter equal to or slightly larger than that of the guide pin 23.

Between the guide pin fitting portion 34 and the contact joint portion 35, projecting portions 36a and 36b are arranged opposite to each other with a distance W1 smaller than the diameter D of the guide pin 23.
At the tip portion of the contact joint portion 35, contact surfaces 37a that come into contact with the side walls 22a and 22b of the plug contact 22,
37b are arranged to face each other. The distance W2 between the contact joint portions 35 is smaller than the width WA of the plug contact 22.

Next, the operation of the electric connector 10 according to the present embodiment thus constructed will be described. First, as shown in FIGS. 1 and 2, the male connector 20 and the female connector 30 are arranged so that their openings face each other. Then, for example, when the female connector 30 is moved toward the male connector 20, the housing 31 of the female connector 30 starts to be fitted into the housing 21 of the male connector 20. At this point, the female connector 30
The contact joint portion 35 of the fitting portion 33 of the
Located on both sides of.

Further, the female connector 30 is replaced with the male connector 20.
When the guide pin 23 is pushed in the direction, the guide pin 23 starts to contact the protrusions 36a and 36b adjacent to the contact joint 35. Further, when the female connector 30 is pushed in toward the male connector 20, the guide pin 23 causes the guide pins 23 to project.
b is pushed outward, and the contact surface 3 of the contact joint portion 35
Increase the distance between 7a and 37b. At that time, the tip portion of the plug contact 22 has the contact surface 3 of the contact joint portion 35.
It is located between 7a and 37b.

Further, the female connector 30 is replaced with the male connector 20.
When pushed in the direction, the guide pin 23
It goes over a and 36b and is fitted into the guide pin fitting portion 34. Thereby, the contact surface 3 of the contact joint portion 35
7a and 37b move toward the side surfaces 22a and 22b of the plug contact 22 by the restoring force of the fitting portion 33. at the same time,
Contact surfaces 37a, 37 at the tips of both contacts 33a, 33b
b is pressed against the plug contact 22 by the two guide protrusions 24, 24 provided on the wall surface 21b of the male connector 20.

Thus, as shown in FIG. 3, the connection between the male connector 20 and the female connect 30 is completed. As described above, according to the present embodiment, the load of friction generated when the male connector 20 and the female connect 30 are fitted to each other is eliminated, the wear of the plug contact 22 and the jack contact 32, and the warp applied to the printed circuit boards 13 and 15. , To prevent bending,
The quality of the plug contact 22, the jack contact 32, and the printed circuit boards 13 and 15 is improved.

Further, the contact surface between the plug contact 22 and the jack contact 32 can be made larger than before, and the electrical contact resistance can be increased. Moreover, since the guide pin 23 is fitted into the guide pin fitting portion 34 of the female connector 30, a reliable fitting can be formed. In addition, although the case where one male connector 20 and one female connector 30 are connected has been described in the above embodiment, the present invention is naturally applicable to an electrical connector in which a plurality of these are connected.

[0022]

As described above, according to the present invention, the male connector is provided with the guide pin, and the female connector is provided with the fitting portion which is opened and closed by the guide pin. It has become possible to mate easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electric connector according to an embodiment of the present invention.

2 is a cross-sectional view of the electric connector of FIG. 1 before connection.

3 is a cross-sectional view of the electric connector of FIG. 1 after connection.

FIG. 4 is a sectional view showing a main part of a conventional electric connector.

[Explanation of symbols]

10 electrical connector 13,15 Printed circuit board 20 male connector 21,31 housing 21a opening 21b, 31a wall surface 22 plug contacts 22a, 22b Side wall 23 Guide pin 30 female connector 32 jack contacts 33 Fitting part 33a, 33b Contact 34 Guide pin fitting part 35 contact joint 36a, 36b protrusion 37a, 37b Contact surface

Claims (8)

[Claims] 1. A box-shaped housing having an opening at one end,
The plug contact is provided so as to project into the housing, the male connector is provided with a guide pin on the opening side of the housing, and the jack contact is provided so as to project into the housing in a box-shaped housing having one end opened, An electrical connector comprising: a jack connector in the housing; and a female connector provided with a fitting portion for the guide pin and the plug contact. 2. The electrical connector according to claim 1, wherein the guide pin has a cylindrical shape and is located on an extension line of the plug contact. 3. The electric connector according to claim 1, wherein the fitting portion of the jack contact includes a bifurcated contactor, and the contactors have spring elasticity capable of moving close to and away from each other. And electrical connector. 4. The electric connector according to claim 3, wherein the both contacts are guide pin fitting portions located on a wall surface side of the housing from which the jack contacts project.
A contact joint portion that is connected to the guide pin fitting portion, and a protrusion portion is disposed between the guide pin fitting portion and the contact joint portion at an interval smaller than the diameter of the guide pin so as to face the contact portion. At the tip of the joint,
An electrical connector, wherein contact surfaces of the plug contacts, which come into contact with the side wall portions, are arranged to face each other. 5. The electrical connector according to claim 1, wherein the male connector has both contacts of the jack contact on a wall surface of the housing from which the plug contact projects. An electrical connector comprising a guide protrusion for guiding the side wall of the contact. 6. The electrical connector according to claim 1, wherein a width of the plug contact is larger than a space between the fitting portions. 7. The electrical connector according to claim 1, wherein the male connector and the female connector are coupled by fitting the housing of the female connector into the housing of the male connector. connector. 8. The electrical connector according to claim 1, wherein the guide pin is made of a material having low frictional resistance.