JP2000294315A - Connector for printed circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for a printed circuit board preventing a leg piece from coming off from a conductive pattern even if a female contact piece is made long enough by thinning the connector. SOLUTION: In this connector for printed circuit board, a female contact piece 9 is formed in a L-shape along its longitudinal direction, and a mating connector 30 is inserted between the female contact piece 9 and one sidewall 4 for elastically contacting to a male contact part 33a. Since the female contact piece 9 is L-shaped, a long spring span is obtained. And since a fixed protrusion piece 11 to be fixed to a socket housing 2 is stood at a leg piece 10 and a long span is obtained, a soldered connection part with a conductive pattern is not affected even if relatively large bending moment is applied to the leg piece 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for a printed wiring board mounted on the surface of a printed wiring board and having a female contact soldered to a conductive pattern of the printed wiring board.

[0002]

2. Description of the Related Art Conventionally, two printed wiring boards 120,
As shown in FIG. 10, the connection between the conductive patterns 140 is made by the female contact 101 and the male contact 13 respectively.
2 types of printed wiring board connectors 1 provided with
00 and 130 are used.

One printed wiring board connector 100 to which the female contacts 101 are attached includes a rectangular parallelepiped socket housing 102 and a plurality of female contacts 101.
It is composed of A pair of plug insertion recesses 103 into which other printed wiring board connectors 130 (hereinafter, referred to as mating connectors) are inserted are formed on the left and right sides of the socket housing 102 from above. In the center side wall of each plug insertion recess 103, a large number of contact accommodation grooves 1 are provided.
04 is the longitudinal direction of the socket housing 102 (in the figure,
(In the depth direction of the paper surface), two types of female contacts 101 which are recessed at a predetermined pitch and are respectively symmetrical.
Is housed.

[0004] The female contact 101 has a standing support piece 105.
A female contact piece 106 cantilevered at the base end 105a of the upright support piece 105 so as to rise parallel to the upright support piece 105, and the socket housing 1 from the base end 105a.
The leg piece 107 horizontally exposed on the bottom surface side of 02 is formed integrally by punching a conductive metal plate. The female contact 101 is attached to the socket housing 102 by press-fitting the upright support piece 105 into the central side wall of the socket housing 102. In the attached state, the female contact piece 106 faces the inside of the plug insertion recess 103. The leg piece 107 is exposed along the bottom surface of the socket housing 102 and is connected to a conductive pattern (not shown) printed at a position facing the printed wiring board 120 by soldering.

The mating connector 130 is composed of a plug housing 132 having a concave recess 134 fitted with the socket housing 102 and a plurality of male contacts 131. Male contact 131 is female contact 1
In the same manner as in No. 01, a conductive metal plate is punched out in a symmetrical L-shape to form two types of male contacts 131. It is attached to the socket housing 102 so as to be exposed on the inner wall surface. The horizontal leg 135 is exposed along the bottom surface of the plug housing 132, and is connected by soldering to a conductive pattern of another printed wiring board 140 on which the mating connector 130 is mounted.

When the mating connector 130 is fitted to one of the printed wiring board connectors 100, the male contacts 131 are brought into contact with the female contact pieces 106 of the female contacts 101 at corresponding positions. , Female contact piece 10
6 is bent in a direction perpendicular to the punching direction (a direction parallel to the paper surface) and elastically contacts the male contact 131. Therefore, the plurality of conductive patterns of the two printed wiring boards 120 and 140 are electrically connected to each other via the female contacts 101 and the male contacts 131 provided in pairs.

[0007] As described above, the female contact 101 and the male contact 131 are formed in a shape in which the conductive metal plate is punched out, and the thickness of the conductive metal plate is set to its lateral width (width in the depth direction of the paper surface). Thus, a large number of contacts can be attached to the printed wiring board connector 100 having a limited size, and the conductive pattern of the printed wiring board 120 having a narrow pitch can be connected by soldering. can do.

[0008]

As described above, according to the conventional connector 100 for a printed wiring board, the connector 1
By reducing the size of the substrate itself and increasing the mounting density of the printed wiring board 120, the overall size can be reduced.

However, since the female contact piece 106 has a structure in which a conductive metal plate is punched out and bent as it is in parallel with the surface of the conductive metal plate to make the cut end face elastically contact the male contact 131, To bend in the direction of the bending process so that the surface of the conductive metal plate
1 is larger than the contact piece that makes elastic contact with the first contact piece 1, and in order to obtain the amount of bending for inserting the male contact 131, a larger pressing force is applied to the female contact piece 106, that is, the mating connector 130 insertion forces are required.

On the other hand, as described above, since a large number of female contacts 101 are attached to the printed wiring board connector 100, a large difference in insertion force appears as a whole, and the mating connector 130 can be fitted without difficulty. In connection, the number of female contacts 101 to be attached is limited.

Conventional connector 100 for printed wiring board
Solves this problem by making the length (spring span) of the female contact piece 106 as long as possible and increasing the bending moment. For this purpose, as shown in FIG. Increased, which was an obstacle to lowering the height.

Further, the longer the spring span of the female contact piece 106 and the greater the bending moment, the greater the bending moment is generated throughout the integrally formed female contact 101, and the leg piece 107 is lifted up and separated from the conductive pattern. Problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the length of the female contact piece can be made sufficiently long even if the height is reduced. Another object of the present invention is to provide a connector for a printed wiring board that can easily fit and connect a mating connector.

Another object of the present invention is to provide a connector for a printed wiring board in which a leg piece does not peel off from a conductive pattern even if a length of a female contact piece is sufficiently long.

[0015]

To achieve the above object, a connector for a printed wiring board according to the first aspect of the present invention is provided on a printed wiring board and has a socket housing in which a plug insertion recess is recessed from a plane side. An upright support piece fixed in one side wall of the plug insertion recess; a female contact piece cantilevered by the upright support piece and protruding into the plug insertion recess; and a socket housing from a base end of the upright support piece. The legs exposed horizontally on the bottom surface side of the printed wiring board and soldered to the conductive pattern of the printed wiring board are provided with a plurality of female contacts integrally formed by punching a conductive metal plate, and the plurality of female contacts are mutually connected. Separately, the female contact piece of each female contact is attached to the socket housing along the vertical plane, and the female contact piece of each female contact is bent in a direction perpendicular to the punching direction and is inserted into the plug insertion recess. In a connector for a printed wiring board elastically contacting a corresponding male contact portion of a connector, the female contact piece is formed in an L shape along the longitudinal direction and inserted between the female contact piece and one side wall. A fixing protruding piece which elastically contacts the male contact portion and is fixed in the other side wall facing one side wall of the plug insertion recess is provided upright from the leg piece.

Since the female contacts formed by stamping the conductive metal plate are attached to the socket housing along the vertical plane, each female contact can be connected to the narrow pitch conductive pattern by soldering. A large number of female contacts can be attached to the socket housing at high density.

Since the female contact piece is formed in an L-shape along the longitudinal direction, a sufficiently long spring span is obtained, and the female contact piece elastically contacts the male contact portion with a light insertion force of the mating connector.

In the female contact, since the upstanding support piece and the fixing protrusion are fixed in opposing side walls of the plug insertion recess, the female contact does not rise from the conductive pattern even if the leg receives a bending moment.

Further, the printed wiring board connector according to a second aspect of the present invention is characterized in that the fixed protruding piece is provided upright at the tip of the leg piece.

Since the entire leg piece is housed in the socket housing, the female contact does not short-circuit,
A connector for a printed wiring board having the same configuration, or another electronic component can be closely mounted on the printed wiring board.

In addition, a connector for a printed wiring board having the same configuration can be integrally connected in a direction orthogonal to the arrangement direction of the plurality of female contacts. Therefore, the same number of female contacts can be provided without making the socket housing slender. Can be attached. Therefore, warpage, undulation, and the like in molding the socket housing can be suppressed, and the socket housing can be mounted in close contact with the surface of the printed wiring board.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A printed wiring board connector 1 according to an embodiment of the present invention will be described below with reference to FIGS. 1 is a longitudinal sectional view of a connector 1 for a printed wiring board, FIG. 2 is a plan view of the connector 1, FIG. 3 is an exploded longitudinal sectional view, and FIG. FIG. 5 is a longitudinal sectional view of the mating connector 30, and FIG. 6 is a longitudinal sectional view showing a state where the connectors 1 and 30 are fitted and connected.

As shown in these drawings, a connector 1 for a printed wiring board according to the present embodiment has a connector 30 for a printed wiring board in which a mating connector 30 to be fitted and connected is mounted on another printed wiring board 40. This is used for connecting the two printed wiring boards 20 and 40.

The printed wiring board connector 1 is composed of a socket housing 2 having a rectangular parallelepiped shape as a whole and a plurality of female contacts 3, 3,....

The socket housing 2 is made of an insulating synthetic resin, and has plug insertion recesses 5, 5 on the left and right sides of the central ridge 4 from the plane side. The left and right plug insertion recesses 5, 5
In order to insert the fitting frame portion 31, it is formed in a ring shape that is continuous upward and downward so as to surround the center ridge 4 and fits with the fitting frame portion 31.

In order to intersect with the plug insertion recess 5,
That is, the contact housing portion 6 for housing the female contact 3 is formed along the vertical plane of the socket housing 2 (a plane parallel to the paper surface in FIG. 3). The contact accommodating portion 6 penetrates from the bottom surface side of the central ridge 4 to the flat surface side, and has a concave portion which opens to the bottom surface side in the peripheral wall 7 of the socket housing 2 which faces the central ridge 4 with the plug insertion concave portion 5 therebetween. It has become.

The contact accommodating portion 6 is formed symmetrically with respect to the central ridge 4 and, as shown in FIG. 2, extends along the longitudinal direction of the left and right plug insertion concave portions 5 and 5 respectively. Many are formed at the pitch.

The female contact 3 accommodated in the contact accommodating portion 6 is formed by stamping a conductive metal plate and cantilevering the support member 8 and the base end 8a of the support member 8 as shown in FIG. The female contact piece 9 supported, the leg piece 10 horizontally exposed from the base end 8a of the upright support piece 8 to the bottom surface side of the socket housing 2, and the fixed protruding piece 1 erected at the tip of the leg piece 10
1 and 1 are integrally formed. This female contact 3 is used in accordance with the shape of the contact housing portion 6 formed in a symmetrical shape, and two types of female contacts 3 which are symmetrical to the left and right are used in accordance with the number of the contact housing concave portions 6.

The female contact piece 9 has an L-shape along its longitudinal direction to sandwich the fitting frame 31 of the mating connector 30 inserted into the plug insertion recess 5 between the female contact piece 9 and the central ridge 4. (Or an inverted L-shape), with the free end side rising upward.

The female contact 3 includes an upright support piece 8
The fixing protrusion 11 is press-fitted into a through hole formed in the central ridge 4 of the contact housing portion 6 into a recess formed in the peripheral wall 7 of the contact housing portion 6 to be housed in the contact housing portion 6 and the socket housing. 2 attached.

As shown in FIG. 1, when the female contacts 3 are attached to the socket housing 2, the leg pieces 10 are exposed along the bottom surface of the socket housing 2 and are printed on opposing surface positions of the printed wiring board 20. It is soldered to a conductive pattern (not shown). In this attached state, the contact projection 9 a formed in a shape protruding inside the free end of the female contact piece 9 faces the inner wall surface of the central ridge 4 in the plug insertion recess 5.

As shown in FIGS. 4 and 5, the mating connector 30 includes a plug housing 32 formed of an insulating synthetic resin, and male contacts 33 of the same number as the number of female contacts 3.
It is constituted by.

In the plug housing 32, a rectangular frame-shaped fitting frame 31 for fitting with the plug insertion recess 5 of the socket housing 2 is integrally formed on a base 32a.
1 can be freely inserted into the plug insertion recess 5.

The male contact 33 has a male contact portion 33a, a fixed portion 33b, and a leg portion 33c integrally formed by punching a conductive metal plate, similarly to the female contact 3, and is orthogonal to the leg portion 33c. One of the forks is a male contact portion 33a and the other is a fixing portion 33b. Multiple male contacts 3
Numeral 3 is attached to left and right two rows of protrusions 31a and 31b along the longitudinal direction of the fitting frame 31 symmetrically, respectively, and two types of male contacts 33 are formed in a symmetrical shape.

The male contact 33 is mounted by press-fitting a fixing portion 33c into a mounting groove communicating from the bottom surface of the base 32a to both side surfaces of the protrusions 31a and 31b. Male contact part 33a
Are exposed on the inner surfaces of the projections 31a and 31b,
Is exposed along the bottom surface of the plug housing 32 and the other printed wiring board 4 on which the mating connector 30 is mounted.
0 is connected to a conductive pattern (not shown) by soldering.

The plurality of male contacts 33 are connected to the fitting frame 31.
When the female contact 3 is inserted into the plug insertion recess 5,
The female contact 3 is attached to the plug housing 32 at the same pitch as the female contact 3 at a portion corresponding to the female contact 3 so as to make elastic contact with the female contact 3.

FIG. 6 shows a state in which the connector 1 for a printed wiring board and the mating connector 30 are fitted and connected to each other. The projection 3 of the plug housing 32 is shown in FIG.
1a and 31b are inserted between the female contact piece 9 and the central ridge 4, and each female contact piece 9 bends outward in a direction perpendicular to the punching direction (a direction parallel to the paper surface), and the contact protrusion 9a is bent. Each male contact 33 elastically contacts the male contact portion 33a. Therefore, the plurality of conductive patterns of the two printed wiring boards 20 and 40 are respectively provided with the female contacts 3 arranged in pairs.
Is electrically connected via the male contact 33.

In this connection, since the female contact pieces 9 are formed in an L-shape, even if the height of the printed wiring board connector 1 is reduced, a sufficient spring span can be obtained, and a large number of female contacts 3 can be connected. The male contact 33 can be elastically contacted without requiring a large insertion force.

At this time, the bending of the female contact piece 9 generates a bending moment in the female contact 3. The bending moment acts on the leg piece 10 so as to bend toward the printed wiring board 20 and the distal end thereof. Since the fixed protruding pieces 11 fixed in the socket housing 2 are connected to each other, the solder connection portion is not affected and does not peel off from the conductive pattern.

Further, since the fixing projection 11 erected at the tip of the leg 10 is pressed into the recess formed in the peripheral wall 7, the leg 10 may project from the side of the socket housing 2. Instead, when mounted on the surface of the printed wiring board 20, the entire leg piece 10 is covered by the socket housing 2. Therefore, the leg pieces 10 are not exposed and short-circuited to other electronic components by mistake, and the similarly configured printed wiring board connector 1 can be connected without any gaps. Density can be further increased.

FIG. 7 is a perspective view showing a connector 50 for a printed wiring board according to another embodiment. Such a printed wiring board connector 1-2
It has double female contacts 3. Hereinafter, in FIGS. 7 to 9, the same components as those of the first embodiment are denoted by the same reference numerals.

By integrally connecting the socket housings 2 to the sides as in this embodiment, if the number of female contacts 3 is the same, the shape is close to a square shape whose length along the longitudinal direction is shortened. Shaped socket housing 51
Can be accommodated. Therefore, compared with the elongated socket housing 2, the influence of undulation and warping along the longitudinal direction generated during molding can be reduced, and the surface of the printed wiring board 20 can be more closely attached.

FIG. 8 is a perspective view showing a mating connector 70 fitted and connected to the printed wiring board connector 50.
3 is completely contained in the plug housing 32,
Similarly, a plug housing 71 in which plug housings 32 having the same configuration are integrally connected to the side can be provided.

FIG. 9 shows a connector 50 for a printed wiring board.
FIG. 4 is a longitudinal sectional view showing a state in which the female connector 3 and the mating connector 70 are fitted and connected to each other. As shown in the drawing, a large number of female contacts 3 and male contacts 33 arranged in a plurality of rows are simultaneously elastically contacted. Can be.

In this connection, the contacts 3 and 33 are not exposed, so that they can be completely insulated from other electronic components.

In the above-described embodiment, the female contacts 3 and the male contacts 33 are respectively press-fitted.
Although the housings 2 and 32 are attached to the socket housing 2 and the plug housing 32, they may be integrally formed and fixed when the housings 2 and 32 are formed.

Further, the printed circuit board connectors 1, 5
The mating connector matingly connected to the printed circuit board 0 also includes the printed circuit board connectors 30 and 7 mounted on another printed circuit board.
However, the mating connector may be an internal wiring connection connector or the like connected to the terminal of the lead wire.

Also, in the second embodiment, an example has been described in which two printed wiring board connectors 1 are connected to the side, but three or more connectors may be connected.

[0049]

As described above, according to the present invention,
A large number of female contacts can be mounted on the socket housing at high density and soldered to the narrow pitch conductive pattern.

Further, the female contact piece has a sufficiently long spring span even if the height of the connector is reduced, so that the mating connector can be fitted and connected with a light insertion force.

Further, since the leg of the female contact is supported by the fixed projection, even if the leg receives a bending moment, it does not rise from the conductive pattern.

According to the second aspect of the present invention, the leg piece
Since the whole is accommodated in the socket housing, there is no possibility of short-circuit with other electronic components.

Further, since a connector for a printed wiring board having the same configuration can be integrally connected in a direction orthogonal to the arrangement direction of the plurality of female contacts, the same number of female contacts can be formed without forming an elongated socket housing. Female contacts can be attached. Therefore, warpage, undulation, and the like in molding the socket housing can be suppressed, and the socket housing can be mounted in close contact with the surface of the printed wiring board.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a printed wiring board connector 1 according to the present embodiment.

FIG. 2 is a plan view of the printed wiring board connector 1. FIG.

FIG. 3 is an exploded vertical sectional view of the printed wiring board connector 1. FIG.

FIG. 4 is a plan view of a mating connector 30 fitted and connected to the printed wiring board connector 1. FIG.

5 is a longitudinal sectional view of the mating connector 30. FIG.

FIG. 6 is a longitudinal sectional view showing a state where the printed wiring board connectors 1 and 30 are fitted and connected.

FIG. 7 is a perspective view showing a printed wiring board connector 50 according to another embodiment.

8 is a perspective view of a mating connector 70 that is fitted and connected to the printed wiring board connector 50. FIG.

FIG. 9 is a longitudinal sectional view showing a state in which the printed wiring board connectors 1 and 30 are fitted and connected.

FIG. 10 is a longitudinal sectional view showing a conventional printed wiring board connector 100 and a mating connector 130.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed wiring board connector 2 Socket housing 3 Female contact 4 Central protrusion (one side wall) 5 Plug insertion recess 7 Peripheral wall (other side wall) 8 Standing support piece 8a Base end part 9 Female contact piece 10 Leg piece 11 Fixed protrusion Piece 30 mating connector 33a male contact

Claims (2)

[Claims] 1. A printed wiring board (1),
A socket housing (2) in which a plug insertion recess (5) is recessed from a plane side; an upright support piece (8) fixed in one side wall (4) of the plug insertion recess (5); Female contact piece (9) that is cantilevered by (8) and protrudes into plug insertion recess (5).
And leg pieces (10) horizontally exposed from the base end (8a) of the upright supporting piece (8) to the bottom side of the socket housing (2) and soldered to the conductive pattern of the printed wiring board (1).
And a plurality of female contacts (3) integrally formed by stamping a conductive metal plate. The female contact piece (9) of each female contact (3) is bent in a direction perpendicular to the punching direction, and the corresponding male contact part (30) of the mating connector (30) inserted into the plug insertion recess (5) is attached. 3
3a) In the connector for a printed wiring board which makes elastic contact with the female contact piece (9), the female contact piece (9) is formed in an L-shape along its longitudinal direction, and is formed between the female contact piece (9) and one side wall (4). A fixed protruding piece (11) elastically comes into contact with the male contact portion (33a) inserted into the plug insertion recess (5) and is fixed in the other side wall (7) facing one side wall (4) of the plug insertion recess (5). A connector for a printed wiring board, which is provided upright from a leg piece (10). 2. A connector for a printed wiring board according to claim 1, wherein the fixing projection piece (11) is provided upright at the tip of the leg piece (10).