JP2004247121A - Printed wiring board connector - Google Patents

Abstract

A male contact piece (3b) of a male contact (3) is fitted without being affected by solder while maintaining a fitting length (D) when a mating connector (30) is fitted and connected. Provided is a connector for a printed wiring board that reduces the overall height of the printed wiring board.
A fitting part (5) for inserting a mating connector (30) from above is formed so as to penetrate an insulating housing (2) along an insertion direction, and a leg piece (3a) of a male contact (3). ) And the connecting piece (3c) between the male contact piece (3b) is extended under the fitting portion (5). The male contact piece (3b) is separated from the leg piece (3a) to be soldered to the conductive pattern of the printed wiring board (300) by the fitting portion (5), so that the male contact piece (3b) is not affected by the solder and is not affected by the solder. The mating connector (30) inserted into 5) does not come into contact with the insulating housing (2), and a sufficient fitting length D can be obtained even if the height is reduced.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printed wiring board connector mounted on the surface of a printed wiring board, and more particularly, to a mating connection with a mating connector mounted on another printed wiring board to form a connection between two printed wiring boards. The present invention relates to a printed wiring board connector suitable for use.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, two types of printed wiring board connectors 100 and 200 each having a male contact 101 and a female contact 201 are used for connection between the conductive patterns of the two printed wiring boards 300 and 400. Is used (for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2000-260509 (page 2, right column, line 46 to page 3, left column, line 32, FIG. 1)
[0004]
Here, when two types of printed wiring board connectors are connected and both contacts are brought into contact, the male contact 101 is provided on the side which does not elastically deform, the female contact 201 is mainly provided on the side which elastically deforms, and the male contact 101 is provided. The connector 100 for a printed wiring board will be described below as a male connector 100 and the connector 200 for a printed wiring board provided with a female contact 201 as a female connector 200.
[0005]
The male connector 100 is formed by press-fitting the male contacts 101 from the bottom side into an insulating housing 103 having a recessed fitting portion 102 into which the female connector 200 is inserted from above. 101, 101 are fixed at a plurality of predetermined pitches in a direction orthogonal to the paper surface.
[0006]
The male contact 101 is led out along the bottom surface of the insulating housing 103, and is connected to the corresponding conductive pattern of the printed circuit board 300 by soldering, and a male contact piece standing bifurcated from the base end of the leg piece 101a. 101b and 101c are formed integrally by punching a metal plate.
[0007]
Of these, the male contact piece 101b facing the fitting recess 102 is supported upright along the inner surface facing the fitting recess 102 of the insulating housing 103, and the fixed projection protruding from the base end thereof is pressed against the insulating housing 103. Thus, the entire male contact 101 is fixed to the insulating housing 103.
[0008]
The female connector 200 has a female contact 201 press-fitted and fixed in an insulating housing 203 having a fitting projection 202 inserted into the fitting recess 102 of the male connector 100 from above. A plurality of contacts 201 are fixed at the same pitch as the male contacts 101 in a direction perpendicular to the paper surface.
[0009]
The female contact 201 has a leg piece 201a soldered to a corresponding conductive pattern of the printed wiring board 400, and female contact pieces 201b and 201c standing bifurcated from the base end of the leg piece 201a. Is formed.
[0010]
One bifurcated female contact piece 201b is cantilevered along the fitting protrusion 202, and the other female contact piece 201c is supported upright in parallel with the female contact piece 201b with a gap between which the insulating housing 103 is sandwiched. Then, the fixing protrusion protruding from the base end is pressed against the insulating housing 203 to fix the entire female contact 201 to the insulating housing 203.
[0011]
The male connector 100 and the female connector 200 configured as described above are respectively mounted on opposing surfaces of two types of printed wiring boards 300 and 400 arranged in parallel, and the fitting protrusion 202 of the female connector 200 is formed. The male connector 100 is inserted into the fitting concave portion 102 and connected to each other as shown in FIG.
[0012]
As a result, the female contact pieces 201b and 201c come into contact with the corresponding male contact pieces 101b and 101c to electrically connect the conductive patterns of the printed wiring boards 300 and 400 via the female contact 201 and the male contact 101. it can. By electrically connecting the printed wiring boards 300 and 400 to be stacked, even if the electronic circuit becomes complicated and large, and the mounting area of the printed wiring board increases, a plurality of boards can be efficiently arranged. In addition, the occupied space in the device can be minimized.
[0013]
[Problems to be solved by the invention]
In order to reduce the space occupied in the device, the distance between the printed circuit boards 300 and 400, that is, the mated connector 100 is set in a state where the male connector 100 and the female connector 200 are mated and connected to each other. , 200 are required to be as low as possible.
[0014]
On the other hand, the male contact 101 of the male connector 100 connects the leg piece 101a to the conductive pattern of the printed wiring board 300 by soldering. However, when the leg piece 101a and the male contact pieces 101b and 101c are close to each other, the solder Was transmitted to the surfaces of the male contact pieces 101b and 101c, causing a poor contact.
[0015]
For this reason, the male contact 101 is formed to be supported upright as in the case of the male contact piece 101c, or is separated in the horizontal direction as in the case of the male contact piece 101b to form the male contact 101 so as to be separated from the leg piece 101a which is a solder connection part. In the case of the male contact piece 101c that is simply supported upright, the contact portion of the female connector 200 with the female contact piece 201c needs to be an upper portion away from the solder connection portion, and the spring span of the female contact piece 201c (cantilever supported). (The length from the fixed end of the portion to the contact portion) to the female connector 200 which must be equal to or longer than a certain length, the overall height is increased and the height cannot be reduced. .
[0016]
Further, in the male contact piece 101b which is separated in the horizontal direction, the contact portion with the female contact piece 201b can be set at a relatively low position, but in order to position the male contact piece 101b on the fixed side without play. The positioning is performed by the insulating housing 103, and there is a problem that the insulating housing 103 on the bottom surface side of the fitting recess 102 to be positioned becomes an obstacle, and a sufficient fitting length along the insertion direction cannot be obtained. This fitting length is a length in which the connectors 100 and 200 are overlapped with each other when the connectors 100 and 200 are fitted and connected. If the fitting length is insufficient, one of the connectors is inclined with respect to the other, resulting in poor connection.
[0017]
Therefore, in the conventional example in which it is necessary to secure a fixed fitting length (D 'in FIG. 8), the overall height cannot be reduced as shown in the figure.
[0018]
Further, even when the male contact pieces 101b and 101c of the male contact 101 are separated from the leg piece 101a, a slight gap is formed between the male contact 101 and the insulating housing 103 because the space therebetween is positioned in the insulating housing 103. There remains a problem that a gap is generated and the flux reaches the male contact pieces 101b and 101c by capillary action.
[0019]
The present invention has been made to solve the above problems, and maintains a distance between a contact portion with a mating connector and a solder connection portion, and maintains a fitting length when the mating connector is mated and connected. It is another object of the present invention to provide a printed wiring board connector capable of reducing the overall height when fitted.
[0020]
It is another object of the present invention to provide a printed wiring board connector in which the solder flux does not more reliably reach the contact portions of the male contact pieces even if the height is reduced.
[0021]
[Means for Solving the Problems]
To achieve the above object, a connector for a printed wiring board according to claim 1 is arranged on a printed wiring board, and is separated from a first block and a second block separated by a fitting portion for inserting a mating connector from above. A plurality of insulating housings each having a first contact block, a leg piece fixed to the first block, and a male contact piece positioned along an inner wall surface facing the fitting portion of the second block are integrally connected by a connecting piece. A plurality of male contacts are fixed to the insulating housing at a predetermined pitch so as to insulate each other, the legs of each male contact are soldered to the conductive pattern of the printed wiring board, and the male contacts The piece is a connector for a printed wiring board that comes into contact with a female contact at a corresponding portion of a mating connector inserted into the fitting portion,
The fitting portion vertically penetrates the insulating housing along the insertion direction of the mating connector, and the connecting piece of the male contact is bridged between the first block and the second block below the fitting portion. It is characterized by the following.
[0022]
The male contact piece is separated from the leg piece soldered to the conductive pattern of the printed wiring board by the fitting portion, so that a predetermined distance is maintained.
[0023]
Since the fitting portion penetrates the insulating housing in the vertical direction, the mating connector does not come into contact with the insulating housing along the insertion direction. A joint length is obtained.
[0024]
Since the connecting piece is bridged below the fitting portion, there is no narrow gap between the connecting piece and the insulating housing, and the flux does not reach the male contact piece due to capillary action.
[0025]
In the connector for a printed wiring board according to the second aspect, the second block is separated from the first block by a fitting portion formed to have a size in which the mating connector is loosely fitted. It is characterized in that it is displaceably connected to one block.
[0026]
Since the first block can be displaced with respect to the second block fixed on the printed wiring board, the displacement of the second block is maintained even if there is a manufacturing error with the mating connector or a positional shift with the printed wiring board. It absorbs and does not transmit stress due to manufacturing error or misalignment to the contact.
[0027]
According to a third aspect of the present invention, in forming the first block and the second block, the leg pieces and the male contact pieces of the male contacts are insert-molded in the first block and the second block, respectively. The male contact is fixed to the insulating housing.
[0028]
When the first block and the second block are molded, a connector for a printed wiring board to which a plurality of male contacts are fixed at the same time is obtained.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a printed wiring board connector 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 is a longitudinal sectional view of a connector 1 for a printed wiring board along a male contact 3, FIG. 2 is a partial perspective view of the connector 1, FIG. 3 is a plan view of the connector 1, and FIG. 5 and FIG. 5 are longitudinal sectional views of a mating connector 30 which is fitted and connected to the printed wiring board connector 1, FIG. 6 is a plan view of the mating connector 30, and FIG. It is a longitudinal cross-sectional view which shows the connected state.
[0030]
As shown in these drawings, a connector 1 for a printed wiring board according to the present embodiment is a connector mounted on a printed wiring board 300, and includes a mating connector 30 mounted on another printed wiring board 400. It is used for the purpose of fitting and connecting two printed wiring boards 300 and 400 arranged in parallel.
[0031]
The printed wiring board connector 1 is a male connector in which a plurality of male contacts 3, 3,... Are fixed to an insulating housing 2, and the mating connector 30 is a female contact that is mainly elastically deformed at the time of contact. Since the connector is a female connector provided with the connector 33, the connector 1 for a printed wiring board according to the present embodiment is described as a male connector 1 and the mating connector 30 is described as a female connector 30.
[0032]
As shown in FIGS. 3 and 4, the insulating housing 2 of the male connector 1 includes a first block 2A formed of an insulating synthetic resin in a rectangular frame shape, and a longitudinal direction in a frame of the first block 2A. And a second block 2B shaped like a square bar.
[0033]
The gap between the second block 2B and the first block 2A vertically separated from each other in the figure, when the female connector 30 described later is fitted and connected, the fitting projections 35 of the female connector 30 are flat. The fitting portions 5 are inserted from the side. The width of the fitting portion 5 in the vertical direction is slightly wider than the width of the fitting protrusion 35 in the same direction. Therefore, the fitting portions 5 and 5 are formed to have a contour that allows the fitting protrusions 35 and 35 to be loosely fitted. ing. On the other hand, as shown in FIG. 6, the interval between the fitting protrusions 35 of the female connector 30 is substantially equal to the width of the second block 2B in the short direction. The second block 2B sandwiched between the protrusions 35, 35 is relatively displaceable with respect to the first block 2A.
[0034]
Since the inner wall surfaces of the first block 2A and the second block facing the fitting portions 5 and 5 are vertical, the fitting portions 5 and 5 penetrate the entire insulating housing 2 in the vertical direction. Has become.
[0035]
As shown in FIGS. 1 and 2, the male contact 3 includes a leg piece 3 a fixed to the first block 2 </ b> A and a male contact supported upright along the inner wall surface facing the fitting portion 5 of the second block 2 </ b> B. A piece 3b and a connecting piece 3c for connecting the leg piece 3a and the male contact piece 3b are formed by bending one conductive wire.
[0036]
The leg piece 3a is bent in an inverted U-shape, and the bent portion is insert-molded and embedded at the time of forming the first block 2A, and one side is formed along the bottom surface of the first block 2A. Is derived. One side of the derived leg piece 3a is soldered to a conductive pattern (not shown) exposed at a corresponding portion on the printed wiring board 300.
[0037]
The male contact piece 3b is also bent in an inverted U-shape that is folded 180 degrees at the upper end. One folded side is embedded in the second block 2B, and the other side is an inner wall surface facing the fitting portion 5. Insert molding is performed at the time of molding the second block 2B so as to be exposed vertically along the surface. The female contact 33 of the female connector 30 inserted into the fitting portion 5 makes elastic contact with the male contact piece 3b facing the fitting portion 5, and is electrically connected.
[0038]
The connecting piece 3c integrally connects the lower end of the male contact piece 3b facing the fitting portion 5 and supported upright to the leg piece 3a. The first block 2A and the second block 2b are provided below the fitting portion 5. It is hung horizontally between 2B.
[0039]
In the male contact 3 configured as described above, a plurality of contacts 3 are provided in each of the molding dies of the first block 2A and the second block 2B with the bent leg piece 3a and the male contact piece 3b. The insert molding is performed at the time of molding the first block 2A and the second block 2B. By this molding, as shown in FIGS. 3 and 4, a plurality of male contacts 3 are arranged in two rows at symmetrical positions around the second block 2B. It is fixed to the insulating housing 2 so as to be arranged at equal intervals along the direction. In the present embodiment, since the first block 2A and the second block 2B are connected only by the connecting piece 3c, the bending of the connecting piece 3c makes the second block 2B freely displaceable.
[0040]
As shown in FIGS. 5 and 6, the female connector 30 fitted and connected to the male connector 1 has a pair of fitting projections 35 projecting from both sides along a longitudinal direction of a rectangular plate. It comprises an insulating housing 31 and a plurality of female contacts 33 fixed to a pair of fitting projections 35, 35. As described above, the fitting protrusion 35 is inserted into the fitting portion 5 of the male connector 1, and the height of the protrusion is the fitting length D of the male connector 1 and the female connector 30.
[0041]
The female contact 33 is formed by punching a conductive metal plate, and as shown in FIG. 5, an upright support piece 33a, an inverted L-shaped female contact piece 33b cantilevered from the base end of the upright support piece 33a, The female contact piece 33b and the leg piece 33c projecting along the bottom surface of the insulating housing 31 in the opposite direction from the base end of the upright support piece 8 are integrally formed.
[0042]
The female contacts 33 are mounted by press-fitting into mounting grooves recessed from the bottom surface side of the fitting protrusions 35, and a plurality of female contacts 33 are formed by male contacts along the longitudinal direction of the fitting protrusions 35. It is fixed to the insulating housing 31 at an arrangement pitch equal to 3.
[0043]
The female connector 30 is mounted on the printed wiring board 400 by soldering the leg pieces 33c of each female contact 33 to a corresponding conductive pattern (not shown) of the printed wiring board 400.
[0044]
FIG. 7 shows a state in which the mating connector 30 is fitted and connected to the male connector (printed circuit board connector) 1 configured as described above, and the fitting projections 35 of the female connector 30 are provided. Is inserted into the fitting portion 5, and each female contact piece 33b of the female connector 30 abuts on the male contact piece 3b exposed at the corresponding portion, while being in a direction orthogonal to the punching direction (a direction parallel to the paper surface). It bends and makes elastic contact. Therefore, the respective conductive patterns of the two printed wiring boards 300 and 400 are electrically connected via the male contacts 3 and the male contacts 33, respectively.
[0045]
In this mated connection state, the fitting portion 5 of the male connector 1 penetrates in the vertical direction, so that the tip of the fitting protrusion 35 does not abut on the insulating housing 2 and the male connector 1 Even if the height of the housing 1 is reduced and the height of the insulating housing 2 is further reduced, the protrusion height of the fitting protrusion 35, that is, the fitting length D can be secured to a sufficient length.
[0046]
In addition, since the tip of the female contact piece 33b does not interfere with the insulating housing 2 in the fitting portion 5, a sufficient length of the spring span can be secured, and no plastic deformation occurs.
[0047]
Further, the male contact piece 3b of the male contact 3 is separated from the leg piece 3a, which is a portion to be soldered to the printed wiring board 300, via a connecting piece 3c, and furthermore, a gap between the connecting piece 3c and the insulating housing 2 is provided. Therefore, the flux of the solder does not reach due to the capillary phenomenon, and there is no possibility of the poor contact at the male contact piece 3b due to the soldering.
[0048]
In the above-described embodiment, the male contact 3 is fixed to the insulating housing 2 by insert molding. However, as in the case of the female contact 33, the male contact 3 is formed by punching a conductive metal plate. It may be fixed to the housing 2.
[0049]
The male contacts 3 formed by punching the conductive metal plate can fix a large number of male contacts 3 without increasing the size of the insulating housing 2 by setting the punching direction to the arrangement direction of the adjacent male contacts 3.
[0050]
Also, the mating connector 30 fitted and connected to the printed wiring board connector 1 has been described as a printed wiring board connector mounted on another printed wiring board 400, but the mating connector is connected to a terminal of a lead wire. Internal wiring connection connector or the like.
[0051]
In addition, the first block 2A and the second block 2B may be integrally formed as long as the second block 2B is not relatively displaceable.
[0052]
【The invention's effect】
As described above, according to the present invention, the distance between the male contact piece connected to the mating connector and the leg piece serving as the solder connection portion is maintained, and the mating length when the mating connector is mated and connected is maintained. However, the overall height when fitting and connecting can be reduced.
[0053]
Further, since the male contact piece and the leg piece are connected by a connecting piece having no narrow gap around, the flux at the time of soldering the leg piece does not reach the male contact piece due to a capillary phenomenon.
[0054]
According to the second aspect of the invention, by utilizing the fact that the second block is separated from the first block by forming the penetrating fitting portion, the second block follows the mating connector and can be displaced. Therefore, even if there is a positional deviation from the mating connector, the displacement of the second block is absorbed, and stress due to manufacturing errors and positional deviation is not transmitted to the contacts.
[0055]
According to the third aspect of the present invention, the first block and the second block can be formed simultaneously, and further, there is no need to assemble the first block and the second block and to assemble the male contacts to these blocks. In addition, the manufacturing process is dramatically simplified.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a printed wiring board connector (male connector) 1 according to the present embodiment.
FIG. 2 is a partial perspective view of the connector 1 for a printed wiring board.
FIG. 3 is a plan view of the printed wiring board connector 1. FIG.
FIG. 4 is a bottom view of the printed wiring board connector 1. FIG.
5 is a longitudinal sectional view of the mating connector 30. FIG.
6 is a plan view of the mating connector 30. FIG.
FIG. 7 is a longitudinal sectional view showing a state in which the printed circuit board connectors 1 and 30 are fitted and connected.
FIG. 8 is a longitudinal sectional view showing a state where a mating connector 200 is fitted and connected to a conventional printed wiring board connector 100.
[Explanation of symbols]
1 Connector for printed wiring board (male connector)
2 Insulating housing 2A First block 2B Second block 3 Male contact 3a Leg piece 3b Male contact piece 3c Connecting piece 5 Fitting portion 30 Mating connector (female connector)
300 Printed Wiring Board D Fitting Length

Claims (3)

An insulating housing having a first block (2A) and a second block (2B) arranged on a printed wiring board (300) and separated by a fitting portion (5) into which a mating connector (30) is inserted from above. (2) and
The leg piece (3a) fixed to the first block (2A) and the male contact piece (3b) positioned along the inner wall surface facing the fitting portion (5) of the second block (2B) are connected. A plurality of male contacts (3) integrally connected by a piece (3c);
A plurality of male contacts (3) are fixed to the insulating housing (2) at a predetermined pitch so as to insulate each other;
The leg piece (3a) of each male contact (3) is soldered to the conductive pattern of the printed wiring board (300), and the male contact piece (3b) is inserted into the fitting part (5). A connector for a printed wiring board, which contacts a female contact (33) at a corresponding portion of the connector (30),
The fitting portion (5) vertically penetrates the insulating housing (2) along the insertion direction of the mating connector (30),
A printed wiring board, wherein a connecting piece (3c) of a male contact (3) is bridged between a first block (2A) and a second block (2B) below a fitting portion (5). Connector. The second block (2B) is separated from the first block (2A) by a fitting portion (5) sized to loosely fit the mating connector (30),
The connector for a printed wiring board according to claim 1, wherein the connector (3c) of the male contact (3) is displaceably connected to the first block (2A). When forming the first block (2A) and the second block (2B), the leg pieces (3a) and the male contact pieces (3b) of the male contact (3) are respectively connected to the first block (2A) and the second block. The connector according to claim 1 or 2, wherein the male contact (3) is insert-molded in the (2B) and the male contact (3) is fixed to the insulating housing (2).

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