JP2002343466A - Connector for connecting between printed wiring boards - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for connecting printed wiring boards for easily accurately connecting a conductor wire and the contact of a connector of a printed wiring board, which is arranged at high mounting density. SOLUTION: A groove 150, in which the distance from a first side end wall 110 is controlled in the specified tolerance, is formed in a side wall 140 of a fitting hole 101 of the connector 100, a contact 160 is arranged inside the groove 150, a conductor wire 260 in which the distance from a first side end surface 210 is controlled in the specified tolerance is arranged on the side surface 250 of the printed wiring board 200, and a spring member 125 is arranged in the central part of the upper second side end wall 121 of the connector. A corner 271 of the printed wiring board is guided with an inclined part 124 of the connector, the printed wiring board is pressed in the lower left slanting direction, the side end surface of the printed wiring board is pressed against the first side end wall of the connector with the spring member, then pressed down directly below. The tip 230 is brought into contact with the ends 132, 133 of the bottom end wall of the connector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection between printed wiring boards for connecting predetermined conductive wiring of one printed wiring board (eg, daughter board) to predetermined conductive wiring of another printed wiring board (eg, motherboard). More particularly, the present invention relates to a connector for coupling between printed wiring boards having a fitting hole into which an insertion portion of the printed wiring board is inserted, and a method of inserting the printed wiring board into the fitting hole.

[0002]

2. Description of the Related Art Many connectors for coupling between printed wiring boards (for example, motherboards) are used to connect a printed wiring board (for example, a daughter board) to another printed wiring board (for example, a motherboard) while obtaining predetermined conduction. Among them, there is a type in which a printed wiring board is directly inserted. In such a type of connector for directly inserting a printed wiring board, a fitting hole is formed in the connector, and the insertion portion of the printed wiring board is inserted into the fitting hole. Since it is plate-shaped and originally has no protrusion, it is necessary to devise a method for accurately matching the conductor wiring of the printed wiring board with the contact of the corresponding connector.

One of the methods is described in, for example,
No. 23062, so that the center line of the printed wiring board is aligned with the vertical center line of the fitting hole of the connector.
This is a center reference alignment in which a projection is provided in one central portion and a hole or a concave portion in which the projection is fitted is provided in the other central portion to perform alignment, and for this purpose, both side end surfaces of the printed wiring board are opposed to each other. A gap is provided between both side end walls of the connector. Another method is, for example, a multipoint reference alignment in which a large number of projections and depressions that fit together are formed on both the connector and the printed wiring board, as described in Japanese Patent Application Laid-Open No. H11-274675.

On the other hand, recently, more and more circuits have been formed on a printed wiring board, and correspondingly,
There is also a need for printed wiring boards and connectors to provide more and more continuity. In addition, the manufacturing accuracy of the conductor wiring attached to the printed wiring board or the contact attached to the connector has been improved, and the gap between the adjacent conductor wiring or the contact has been reduced. For example, what was conventionally about 0.6 mm has been reduced to about 0.2 mm.

As described above, when the gap is reduced, the provision of the gap on both sides as described in Japanese Patent Publication No. Hei 7-123022 itself causes erroneous coupling between the conductor wiring of the printed wiring board and the contact of the connector. On the other hand, it becomes difficult to form many irregularities as disclosed in Japanese Patent Application Laid-Open No. H11-274675.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above problems. It is an object to provide a connector for use. It is also an object of the present invention to provide a method of inserting a printed wiring board into a connector such that the conductor wiring of the printed wiring board and the contacts of the connector are densely arranged with each other.

[0007]

According to the first aspect of the present invention, there is provided a printed wiring board coupling for connecting a predetermined conductive wiring of a first printed wiring board to a predetermined conductive wiring of a second printed wiring board. Connector having a fitting hole into which an insertion portion of a printed wiring board is inserted, and a first side wall between a first side end wall and a second side end wall in a longitudinal direction of the fitting hole. A contact which is positioned with reference to the end wall and is connectable to predetermined conductor wiring of the second printed wiring board is provided, and the contact of the first printed wiring board inserted into the fitting hole is provided. The insertion portion has, on the side face between the first side end face and the second side end face in the longitudinal direction, the same position as the position of the contact of the fitting hole from the first side end wall with respect to the first side end face. As shown in (2), the positioned conductor wiring is provided, and is provided on the second side end wall in the longitudinal direction of the fitting hole. When the first printed wiring board is inserted, the first side end face in the longitudinal direction of the insertion portion of the first printed wiring board abuts on the first side end wall in the longitudinal direction of the fitting hole of the connector. Provided is a connector for coupling between printed wiring boards, wherein a pressing means capable of pressing a second side end face in a longitudinal direction of an insertion portion of the first printed wiring board arranged to face the second side end wall is provided. Is done.

In the connector thus constructed, the second printed wiring board is positioned on the side wall between the first side end wall and the second side end wall in the longitudinal direction with reference to the first side end wall. Side face between the first side end face and the second side end face in the longitudinal direction with respect to the first side end wall of the fitting hole in which the contact is provided, which can be coupled to the predetermined conductor wiring A first printed wiring board on which conductor wires positioned so as to be located at the same position as the position of the contact of the fitting hole from the first side end wall with reference to the first side end surface; The insertion part of the first printed wiring board is inserted into the fitting hole of the connector while the first side end face of the insertion part is in contact with the pressing means.

According to a second aspect of the invention, in the first aspect of the invention, at least the edge of the second side end wall provided with the pressing means for the fitting hole of the connector on the opening side is the first printed wiring. There is provided a connector having an inclined surface capable of guiding a corner at a boundary between a second side end face and a tip end face of an insertion portion of a first printed wiring board when a board is inserted.

According to a third aspect of the present invention, there is provided the connector according to the first aspect of the present invention, wherein the contact of the connector is disposed at a position deeper than the pressing means provided on the side end wall. .

According to a fourth aspect of the present invention, there is provided the connector according to the first aspect of the present invention, wherein both ends of the bottom end wall of the connector near the side end walls are raised. In the connector configured as described above, only the two ends of the insertion portion of the printed wiring board abut against the bottom end wall of the connector.

According to the fifth aspect of the present invention, the connector for coupling between printed wiring boards is fitted so that predetermined conductive wiring of the first printed wiring board is connected to predetermined conductive wiring of the second printed wiring board. A method of inserting an insertion portion of a first printed wiring board into a hole, wherein a first side end wall is provided on a side wall between a first side end wall and a second side end wall in a longitudinal direction of a fitting hole. An insertion portion of the first printed wiring board, provided with a contact and positioned in the fitting hole, which is positioned with respect to the reference and is connectable to predetermined conductor wiring of the second printed wiring board. The first side of the contact of the fitting hole is provided on the side surface between the first side end surface and the second side end surface in the longitudinal direction with reference to the first side end surface.
Positioned conductor wiring is disposed so as to be at the same position as the position from the side end wall, and is disposed on the second side end wall in the longitudinal direction of the fitting hole, facing the second side end wall. Pressing means for pressing the second side end face in the longitudinal direction of the insertion portion of the first printed wiring board to be provided is provided, and the pressing means presses the second side end surface of the insertion portion of the first printed wiring board. The first printed wiring board is inserted into the fitting hole of the connector while pressing the side end face so that the first side end face of the insertion portion of the first printed wiring board is brought into contact with the first side end wall of the connector. ,
A method is provided.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1, a connector 100 and a first printed wiring board 200 inserted into the connector 100 are shown by solid lines. Usually, the connector 100 is connected to the printed wiring board 2 to be inserted.
Although it is often attached to a second printed wiring board different from 00, for example, a motherboard, the second printed wiring board to which the connector 100 is attached is not shown in each drawing. The connector 100 is formed of a so-called industrial plastic (for example, LCP, PBT, PCT, etc.) and has an elongated fitting hole 101 whose upper part is open in the figure, and the fitting hole 101 is the first side end wall 110, 2 side end wall 12
0, a bottom end wall 130, and a pair of side walls 140 (only one is shown) extending in a planar shape.

A large number of grooves 150 are formed in the side wall 140, and contacts 160 are provided in the grooves 150 (three are shown at the left end and only two at the right end in FIG. 1). ). Each groove 150 has two opposing walls parallel to the first side end wall 110, and these walls are very accurately positioned (eg, 0.05 mm tolerance) from the first side end wall. Have been. The contact 160 is formed, for example, by punching from a copper alloy strip material for a spring, and the width is controlled with higher precision (for example, a tolerance of 0.01 mm to 0.03 mm).

The second side end wall 120 is an upper second side end wall 121.
And a lower second side end wall 122. A concave portion 123 is formed in a central portion of the upper second side end wall 121, and a spring member 125 as a pressing unit is disposed in the concave portion 123. The spring member 125 is formed of a spring metal material such as SUS or a copper alloy.

The bottom end wall 130 has a main bottom end wall 131.
And a first side bottom end wall 132 and a second side bottom end wall 133 protruding at the end of the main bottom end wall 131 due to a step. The height of this step is 0.2 mm to 0.5 mm. The reason why the bottom end wall 130 is raised at both ends is that the main bottom end wall 131 has a large number of contacts 160 and the thickness of the molding material is small and does not have an unnecessarily strong strength. Since the bottom end wall 132 and the second side bottom end wall 133 do not have the conductor wiring 160 and the molding material is thick and strong, the front end surface of the printed wiring board 200 when the printed wiring board 200 is pushed in. This is because only the two end portions 230 contact the bottom end wall of the connector 100 so that the bottom end wall 130 is not easily damaged even when the printed wiring board 200 is pushed in by an excessive pushing force.

The printed wiring board 200 is made of a material such as a glass epoxy material (for example, FR4 type) or a ceramic, has a thickness of about 0.5 mm to 3.2 mm, and has an insertion width inserted into the connector 100. 10mm-200m
m, generally several tens mm. It has a first side end surface 210, a second side end surface 220, an insertion front end surface 230, an upper end surface 240, and a pair of side surfaces 250 (only one is shown) expanding in a planar shape. Is divided into two parts by a step, and comprises an upper second side end face 221 and a lower second side end face 222. This is to prevent erroneous insertion of the first board into the fitting hole 101 of the connector 100 by mistake in up, down, left, and right. Side 2
Although a large number of conductor wirings 260 are provided in 50, the width of each conductor wiring 260 is managed with a predetermined tolerance, and the distance from the first side end surface 210 is managed, for example, at the center position. The tolerance is managed to the same degree as the processing tolerance of the mounting groove of the contact 160 of the connector 100, for example,
It is 0.05 mm.

FIG. 2 is a perspective view of the connector 100,
FIG. 3 is a partially enlarged view of FIG. As is clear from FIGS. 2 and 3, the contact 160 of the connector 100 is not a simple flat plate, but has a shape capable of exerting a spring force for pressing the printed wiring board 200 from the side. This shape includes a cantilever type and a bellows type.

The contact 160 is formed in the groove 15 formed continuously from the bottom wall 130 to the side wall 140.
0, and is integrally connected to the external connection terminal 161 through a hole (not shown). This external connection terminal 1
The connector 100 is fixed by soldering 61 to a mounting terminal prepared on a printed wiring board (not shown) such as a motherboard for mounting the connector.

As shown in FIG. 3, the external connection terminals 16
Reference numeral 1 denotes a so-called surface mount type, which projects laterally from the bottom of the connector 100 and is mounted on the surface of the printed wiring board for connector mounting and then soldered. In addition, instead of protruding laterally from the bottom of the connector 100 in this manner, it protrudes downward as it is, and is inserted into a mounting hole formed in advance on a connector mounting printed wiring board and then soldered. It is of course possible to use an external connection terminal.

FIG. 4 is an enlarged perspective view of a single spring member 125. The spring member 125 has an insertion portion 127 inserted into the spring member mounting hole 128 shown in FIG. And a spring action portion 126 that is held and supported and actually exerts a spring action.
26a and a pressing portion 126b. Then, the first side end surface 210 of the printed wiring board 200 is securely pressed against the first side end wall 110 of the connector 100, and the connector 100 and the printed wiring board 200 are not subjected to excessive force, for example, by a spring. It is designed to generate a pressing load of a force of 50 to 500 g.

Further, the recess 123 formed in the upper second side end wall 121 is not formed over the entire width of the wall, but is formed about 60% of the central portion of the upper second side end wall 121.
It is formed only in the width of. The opening side of the remaining portion, that is, the upper edge in the drawing is the printed wiring board 20.
An inclined surface 124 is provided so as to function as a guide when the 0 is inserted.

Returning to FIG. 1, a method of inserting the printed wiring board 200 into the connector 100 will be described. First,
From the state where the printed wiring board 200 is not in contact with any of the connectors 100 as indicated by the solid line, the bottom surface 231 of the printed wiring board 200 and the lower end of the upper second side end wall 221 are indicated as indicated by the dashed line. Of the connector 100 is brought into contact with the inclined surface 124 of the connector 100.

Then, the base 200 is moved obliquely downward to the left in the figure while the corner 271 is in contact with the inclined surface 124. Eventually, the corner 271 comes off the inclined surface 124 and comes into contact with the oblique guide surface 126 of the spring member 125.
A state where the side end face 210 is in contact with the first side end wall 110 of the connector 100 is a state shown by a two-dot chain line in FIG.

By proceeding to the above state, the position of the printed wiring board 200 in the longitudinal direction with respect to the connector 100 does not change. Therefore, thereafter, the printed wiring board 200 is pushed downward against the pressing force (about 50 to 500 g) of the spring member 125 of the connector 100,
After passing through the state shown by the three-dot chain line, both ends of the bottom surface 230 of the printed wiring board are connected to the first side bottom end wall 132 and the second side bottom end wall 1 of the connector 100 as shown by the four-dot chain line.
The connection is completed by touching 33. During this time, the connector 100
Contact 160 and conductor wiring 2 of printed wiring board 200
When the contacts 60 start contacting, the spring force of a large number of the contacts 160 starts to act, so that it is necessary to push the contact 160 with a strong force.

As described above, the contact 160 of the connector 100 and the conductor wiring 260 of the printed wiring board 200 can be accurately contacted without displacement. FIG. 5 is a diagram for explaining the principle of the present invention. The contact 160 (for example, the center) of the connector 100 is located at a distance Sn from the first side end wall 110 and the conductor wiring 260 (of the printed wiring board 200). Are located at the same distance Dn as Sn from the first side end face 210, so that if the first side end wall 110 and the first side end face 210 are combined, the contact 160 of the connector 100 And that the conductor wiring 260 of the printed wiring board 200 matches.

[0027]

According to the first aspect of the present invention, there is provided a connector for connecting printed wiring boards for connecting predetermined conductive wiring of a first printed wiring board to predetermined conductive wiring of a second printed wiring board. A fitting hole into which the insertion portion of the first printed wiring board is inserted, and a first side end wall provided on a side wall between the first side end wall and the second side end wall in the longitudinal direction of the fitting hole. Positioned on the basis of, the contact is arranged so that it can be coupled to the predetermined conductor wiring of other parts, the insertion portion of the first printed wiring board inserted into the fitting hole, On the side face between the first side end face and the second side end face in the longitudinal direction, the fitting hole is located at the same position as the position from the first side end wall of the contact with respect to the first side end face with respect to the first side end face. Positioned conductor wiring is provided, and the longitudinal direction of the fitting hole of the connector is provided on the second side end wall in the longitudinal direction of the fitting hole. Of the first printed wiring board arranged opposite to the second side end wall such that the first side end face in the longitudinal direction of the insertion portion of the first printed wiring board abuts on the first side end wall of the first printed wiring board. Pressing means for pressing the second side end face in the longitudinal direction of the insertion portion is provided, and using this connector,
According to the fifth aspect, the contact of the connector and the conductor wiring of the first printed wiring board are arranged in the same manner from the first side end wall and the first side end face, respectively, and the first side of the connector is provided. By inserting the end wall and the first side end face of the first printed wiring board in the same position by pressing means, the contact of the connector and the conductor wiring of the first printed wiring board correspond to a predetermined one, respectively. The two can contact each other with high accuracy. If the both ends of the bottom end wall of the connector close to the side end walls are raised as in claim 4, the insertion force of the printed wiring board can be received at both ends of the bottom wall having relatively high strength.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a structure of the present invention and a method of using the same.

FIG. 2 is a perspective view of a connector.

FIG. 3 is a partially enlarged view of the perspective view of FIG. 2;

FIG. 4 is an enlarged view of a spring member.

FIG. 5 is a diagram illustrating the principle of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 connector 110 first side end wall 120 second side end wall 121 upper second side end wall 122 lower second side end wall 123 concave portion 124 inclined surface 125 spring member 130 bottom end wall 140 ... Side wall 150... Groove 160... Contact 200... (First) printed circuit board 210... 240 top surface 250 side surface 260 conductor wiring 271, 272 corner

Continued on the front page F-term (reference)

Claims (5)

[Claims] 1. A printed wiring board coupling connector for connecting a predetermined conductor wiring of a first printed wiring board to a predetermined conductor wiring of a second printed wiring board, the connector comprising: The insertion portion has a fitting hole to be inserted, and is positioned on a side wall between the first side end wall and the second side end wall in the longitudinal direction of the fitting hole with reference to the first side end wall. A contact which is connectable to a predetermined conductor wiring of the second printed wiring board is disposed, and an insertion portion of the first printed wiring board inserted into the fitting hole has a first longitudinal direction. On the side surface between the side end surface and the second side end surface,
Positioned conductor wiring is disposed so as to be located at the same position as the position of the contact of the fitting hole from the first side end wall with reference to the first side end face, and the longitudinal direction of the fitting hole is When the first printed wiring board is inserted into the second side end wall of the first side in the longitudinal direction of the fitting hole of the connector,
The first printed wiring board insertion portion of the first printed wiring board disposed opposite to the second side end wall such that the first side end face in the longitudinal direction of the insertion portion of the first printed wiring board abuts on the side end wall of the first printed wiring board. A connector for coupling between printed wiring boards, further comprising a pressing means capable of pressing a second side end surface in the longitudinal direction. 2. The insertion portion of the first printed wiring board, when the first printed wiring board is inserted, at least the edge of the opening of the second side end wall provided with the pressing means for the fitting hole of the connector. The connector for coupling between printed wiring boards according to claim 1, characterized in that the inclined surface is capable of guiding an angle of a boundary between the second side end surface and the front end surface. 3. The connector according to claim 1, wherein the contact of the connector is disposed at a position deeper than the pressing means provided on the side end wall. 4. The connector according to claim 1, wherein both end portions of the bottom end wall of the connector near the respective side end walls are raised. 5. The first printed wiring board, wherein the first conductive wiring is connected to the predetermined conductive wiring of the second printed wiring board. A method of inserting an insertion portion of a printed wiring board, comprising: positioning on a side wall between a first side end wall and a second side end wall in a longitudinal direction of a fitting hole with reference to the first side end wall; A contact, which is connectable to a predetermined conductor wiring of the second printed wiring board, is provided, and an insertion portion of the first printed wiring board inserted into the fitting hole has a longitudinal direction. On the side surface between the first side end surface and the second side end surface,
Positioned conductor wiring is provided so as to be located at the same position as the position of the contact of the fitting hole from the first side end wall with respect to the first side end face, and the longitudinal direction of the fitting hole is provided. Pressing means for pressing the second side end face in the longitudinal direction of the insertion portion of the first printed wiring board disposed opposite to the second side end wall is provided on the second side end wall. The pressing means presses the second side end face of the insertion portion of the first printed wiring board, and presses the first side end wall of the connector on the first side end wall of the connector.
Inserting the first printed wiring board into the fitting hole of the connector while abutting the first side end surface of the insertion portion of the printed wiring board.