JPS6320067Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Purpose of the invention (industrial application field) This invention is used in the technical field of electrical connectors, and in particular relates to an electrical connector receptacle with an improved contact holding structure. be.

(Prior art) In recent years, in the field of telephones and various measuring instruments,
Small and inexpensive electrical connectors called modular connectors are becoming widespread. The receptacle of this type of connector is often used by being directly attached to a printed circuit board.
The one disclosed in No. 155479 is known.
However, this receptacle has the following problems, for example.

In other words, the electrical contact is only locally supported in the groove provided in the side wall of the housing, and most of the L-shaped arm is exposed in the recess of the housing. If dust or foreign matter easily falls or adheres to the device, and if this foreign matter is conductive, there is a risk of short-circuiting the arms, which may lead to malfunction of the circuit or an accident.

Moreover, since the arm portion of the contactor is not held in any way over a long range in the recess, its holding is extremely unstable. In particular, long contacts located on the outside are extremely unstable, and there is a possibility that adjacent contacts may come into contact with each other due to some external cause.

(Problems to be solved by the invention) The present invention solves the various problems of the conventional receptacles mentioned above. To provide an electrical connector receptacle that is easy to assemble.

(2) Structure of the invention (Means and actions for solving the problems) The present invention is structured as follows in order to solve the above-mentioned problems.

Note that in order to facilitate the explanation of the configuration of the present invention, XYZ orthogonal coordinates will be set in space.

The electrical connector receptacle of the present invention has an insulating housing and a plurality of contacts of good conductivity.

The housing has a plug insertion hole into which a plug to be mated with the receptacle is inserted facing in the positive X direction. That is, the plug insertion hole opens toward the negative X direction. Here, the contacts of the plug extend in the X direction and are arranged in plurality in the Y direction, and the contacts of the receptacle come into contact from the Z direction when the plug is inserted.

The housing has first grooves and second grooves for guiding and holding the contacts formed as follows.
For both grooves, the number of grooves is equal to the number of the contacts.

The first groove opens in the X-positive side region of the front end surface on the X-positive side of the housing and at least one side surface in the Y direction, and extends from the front end surface in the X-negative direction to the middle part of the housing in the XY plane. It is extending. Such grooves are arranged in the Z direction by the number of contacts. The width of the groove is a size suitable for inserting a contact made of a pin material, which will be described later. Further, this groove width is the same for the next second groove.

The second groove is located in the X negative side region of the housing.
It opens at the rear end surface of the housing on the negative X side and at the plug insertion opening, and extends from the inner surface of the plug insertion opening to the middle part of the housing within the XZ plane. A plurality of such grooves are arranged in the Y direction by the number of contacts.

The first groove and the second groove are communicated with each other by a guide hole extending in the X direction and having a diameter suitable for press-fitting the pin material.

On the other hand, the contact is made by bending a conductive pin material into an L-shape in the XY direction, and passes through the guide hole through the first groove of the housing with the X axis part facing the negative X direction. It is made to protrude from the two grooves in the negative X direction, and then this protruding portion is bent into a hook shape along the second groove in the XZ plane, so that the tip portion protrudes into the plug insertion hole.

In this way, the contact held by the first groove and the second groove protrudes from the housing only at both ends, which function as contacts, and the middle part is completely covered over a long range by the wall between the two grooves. Because they are isolated and firmly held, it is more difficult for foreign objects to enter than with conventional ones, and there is no risk of short-circuiting of adjacent contacts even if the foreign objects are conductive. It becomes extremely stable.

(Example) An example of the present invention shown in the accompanying drawings will be described below.

Fig. 1 is a partially cutaway perspective view of the electrical connector receptacle of this embodiment, showing the relationship between the plug inserted into the receptacle and the printed circuit board to which the receptacle is attached, and Fig. 2 is a projected view of the receptacle. and a cross-sectional view.

In FIGS. 1 and 2, XYZ axes are set using orthogonal coordinates to clarify each direction in space.

1 is a plug having a plurality of contacts 11, 11, ... on the front (X positive direction) upper part of the housing;
The contacts 11, 11, . . . extending in the direction are arranged in the Y direction in a groove opening in the Z direction, and are respectively press-connected to the wires 12, 12, . An elastic tongue piece 13 is provided at the lower part of the plug 1, and a cutout part 14 is formed so that when the plug 1 is inserted into the receptacle, it engages with a step in the receptacle to be described later to prevent it from coming off.

A receptacle 2 according to the present invention is disposed in front of the plug 1. The receptacle 2
It consists of a housing 3 molded from an insulating material and a contact 5 made from a pin material of an electrically conductive material.

The housing 3 has a substantially rectangular parallelepiped block shape, and has a plug insertion hole 30 in its lower part into which the plug 1 described above is inserted facing in the positive X direction. In the illustrated example, the plug insertion hole penetrates in the X direction, but the front surface on the positive X direction side (opposite the plug side) may be closed by a wall surface. Above plug insertion hole 3
0 has a shape suitable for guiding the peripheral surface of the plug 1, and has an elastic tongue piece 13 of the plug 1 on the bottom surface.
It has a stepped portion 39 that is hooked to the cutout portion 14 of.

A first groove 31 is provided in a region in the positive X direction of the housing 3 above the plug insertion hole 30. A plurality of grooves 31a, 31 forming the first groove 31
b, .
2 in the negative X direction to an intermediate position of the housing. In FIG. 1, each of the grooves 31a,
31b, . . . are alternately different in depth. The relationship between these alternately different groove depths is such that when the contacts described later are press-fitted into each groove, the parts protruding from the housing 3 in the positive Y direction are kept at a constant distance from each other so that they can be easily connected on the printed circuit board. This is not an essential condition of the present invention. Further, the width of each of the grooves 31a, 31b, . . . is set to a size that firmly holds the contact when the contact is inserted. This groove width also applies to the second groove described below.

Housing 3 on the opposite side of the first groove 31
A second groove 33 is formed in the negative X direction region. The second groove 33 is open to the rear end surface 34 in the upper portion of the housing 3 and the upper inner surface of the plug insertion port 30. The second groove 33 has grooves 33a, 33b, ... sequentially arranged in the Y direction, and each groove 33
a, 33b, ... are plug insertion ports 3 in the XZ plane
0 to the middle part of the housing.

Each groove 33a, 33b, ... of the second groove is connected to each groove 31 of the first groove described above inside the housing 3.
a, 31b, . . . are communicated with each other through guide holes extending in the X direction. Therefore, each guide hole is located on the intersection line of each groove 31a, 31b, . . . of the first groove and the second groove 33a, 33b, . In FIG. 1, only the guide hole 35a that communicates the first groove 31a and the second groove 33a is shown. The diameter of each guide hole is such that the contact is firmly held when inserted.

On the other hand, the contact has an X-axis portion and a Y-axis portion, and is bent into an L-shape. Taking the contact 5a shown in FIG. 1 as an example, the X-axis portion 51a is It is inserted into the guide hole 35a from the position indicated by the two-dot chain line through the first groove of the housing, for example, the groove 31a, in the negative X direction. Then, the Y-axis portion 52a of the contact 5a aligns with the groove 3.
1a and is held by the groove 31a, and the tip portion 52a' of the Y-axis portion 52a protrudes from the Y-direction side surface 38 of the housing (FIGS. 2, 1 and 3). The X-axis portion 51a protruding from the rear end surface 34 of the housing in the negative X direction is bent downward around the Y-axis as shown in FIG. protrudes (see Figure 2, 4). The contacts are inserted and bent into the respective guide holes 35a, . . . in the manner described above, and the tip of the X-axis portion is formed into a hook shape facing in the positive X direction. Therefore, when plug 1 is inserted into plug insertion hole 30,
The tips of the X-axis portions of the contacts 5a come into elastic contact with the contacts 11 of the plug.

To attach the receptacle as described above to the printed circuit board 6, the mounting legs 37 provided on the Y-positive side surface, which is the mounting surface of the housing 3, are press-fitted into the mounting holes 61 of the printed circuit board 6. The mounting leg 37 has a conical head 37' whose base is slightly larger than the mounting hole and whose tip is smaller than the mounting hole, and is provided with a vertical slit 37'' in the center. By reducing the diameter when press-fitting into the mounting hole 61, the receptacle 2 is fixed to the printed circuit board 6 in a snap-like manner.By mounting the receptacle, the Y-axis portions 52a, 52b of each contactor 5a, 5b, . . . , ... are the corresponding printed wiring holes 63a, 6 of the printed circuit board.
3b, . . . and then connected to the circuit by soldering or the like.

(3) Effects of the invention The invention is constructed as described above, and has the following effects.

Each contact is supported by a first groove and a second groove that extend planarly, and the support wall surface covers almost the entire area of the housing, so there is no free space between adjacent contacts. Therefore, the contacts are not short-circuited by foreign objects, and malfunctions and failures of the circuit are prevented.

Owing to the above structure, each contact can be firmly held over a long range, and there is no possibility that the contacts will come into contact with each other due to external factors.

Assembling the contactor requires only one bending step after press-fitting it into the housing in the X-axis direction, which reduces assembly man-hours and contributes to lower costs.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a connector receptacle according to an embodiment of the present invention, showing the relationship between the plug and the printed circuit board. FIG. 2 is a projected view of the receptacle of FIG. 1, and 1 is a front view. Figure 2 is a right side view.
3 is a rear view, and 4 is a sectional view taken along line A-A of 1. 2...Receptacle, 3...Housing, 30
...Plug insertion hole, 31...First groove, 32...Front end surface, 33...Second groove, 35a...Guide hole, 5
a...Contactor, 51a...X-axis portion, 51b...Y
Shaft.

Claims (1)

[Claims for Utility Model Registration] A housing having a plug insertion hole into which a plug in which a plurality of contacts extending in the X direction are arranged in the Y direction is inserted, and the plug is fixed to the housing and has one end attached to the housing. In an electrical connector receptacle that includes a plurality of contacts that protrude into the insertion hole and come into elastic contact with the contact portion of the plug, the contacts include an X-axis portion of a pin bent in an L-shape in the XY direction. After inserting into the first groove of the housing in the negative X direction, the X-axis portion is bent in the XZ plane in a hook shape within the second groove of the housing, and the tip of the X-axis portion protrudes into the plug insertion hole. The first groove extends from the front end surface of the housing on the X-positive side in the XY plane to the middle part of the housing in the X-negative direction and is provided in plurality in the Z direction, and the second groove extends on the X-negative side of the housing. In the area, XZ
A plurality of grooves are provided in the Y direction extending from the inner surface of the plug insertion hole to the middle part of the housing in a plane, and the first groove and the second groove extend in the X direction for inserting the X axis portion of the pin material. An electrical connector receptacle characterized by communicating through a guide hole.