JP2011175870A - Printed circuit board coupling structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for coupling one printed circuit board to the side of the other printed circuit board, not via a relay printed circuit board, so that one board surface is angled perpendicular to the other. <P>SOLUTION: The printed circuit board coupling structure 10 includes a head connector 122 provided on a sub printed circuit board 12 so that a conductive pin 123 extends approximately parallel to the board surface 12a of the sub printed circuit board 12, and a socket connector 112 provided on a main printed circuit board 11 so that a pin insertion hole 112a extends approximately parallel to the board surface 11a of the main printed circuit board 11. In the state that the conductive pin 123 is inserted into the pin insertion hole 112a, the board surface 12a of the sub printed circuit board 12 is angled approximately perpendicular to the board surface 11a of the main printed circuit board 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a printed circuit board coupling structure in which a pair of printed circuit boards are coupled through connectors so that the angles formed by the respective substrate surfaces are substantially vertical, and in particular, a pair of printed circuits without using a relay printed circuit board. The present invention relates to a printed circuit board bonding structure in which substrates are directly bonded.

  Although many printed circuit boards on which various electronic components are mounted are provided inside the electrical equipment, connectors are widely used as means for coupling a plurality of printed circuit boards. This connector is composed of a header connector with protruding conductive pins and a socket connector with a pin insertion hole. The header connector is connected to one printed circuit board to be connected, and the socket connector is connected to the other printed circuit board. Each is provided. Then, by inserting the conductive pins of the header connector into the pin insertion holes of the socket connector, the printed boards are physically coupled and electrically connected.

  By the way, since the printed circuit boards are arranged in various postures inside the electric apparatus, a coupling structure corresponding to the positional relationship between the pair of printed circuit boards to be coupled is required. FIG. 3 is a schematic perspective view showing a printed circuit board coupling structure 20 according to a first conventional example. The printed circuit board coupling structure 20 is configured to couple the main printed circuit board 21 and the sub printed circuit board 22 so that the substrate surfaces 21a and 22a are parallel to each other. More specifically, a socket connector 211 is provided in the main printed circuit board 21 so that a pin insertion hole (not shown) extends in a direction perpendicular to the board surface 21a. On the other hand, a header connector 221 is provided on the sub printed circuit board 22 so that conductive pins (not shown) extend in a direction perpendicular to the substrate surface 22a. Then, in a state where the conductive pins are inserted into the pin insertion holes, the substrate surface 21a of the main printed circuit board 21 and the substrate surface 22a of the sub printed circuit board 22 are parallel to each other with a predetermined distance.

  FIG. 4 is a schematic perspective view showing a printed circuit board coupling structure 30 according to a second conventional example. The printed circuit board coupling structure 30 also couples the main printed circuit board 31 and the sub printed circuit board 32 so that the substrate surfaces 31a and 32a are parallel to each other. More specifically, the main printed circuit board 31 is provided with a socket connector 311 so that a pin insertion hole (not shown) extends in a direction parallel to the board surface 31a. On the other hand, a header connector 321 is also provided on the sub-printed circuit board 32 so that conductive pins (not shown) extend in a direction horizontal to the circuit board surface 32a. Then, with the conductive pins inserted into the pin insertion holes, the substrate surface 31a of the main printed circuit board 31 and the substrate surface 32a of the sub printed circuit board 32 are parallel to each other so as to form the same plane.

  Next, FIG. 5 is a schematic perspective view showing a printed circuit board coupling structure 40 according to a third conventional example. The printed circuit board coupling structure 40 is configured to couple the main printed circuit board 41 and the sub printed circuit board 42 so that the substrate surfaces 41a and 42a are perpendicular to each other (for example, see Patent Document 1). More specifically, the main printed circuit board 41 is provided with a socket connector 411 so that a pin insertion hole (not shown) extends in a direction perpendicular to the board surface 41a. On the other hand, the sub-printed circuit board 42 is provided with a header connector 421 so that conductive pins (not shown) extend in a direction parallel to the circuit board surface 42a. In the state where the conductive pins are inserted into the pin insertion holes, the substrate surface 41a of the main printed circuit board 41 and the substrate surface 42a of the sub printed circuit board 42 are perpendicular to each other.

  Next, FIG. 6 is a schematic perspective view showing a printed circuit board coupling structure 50 according to a fourth conventional example. The printed circuit board connection structure 50 also connects the main printed circuit board 51 and the sub printed circuit board 52 so that the substrate surfaces 51a and 52a are perpendicular to each other. More specifically, the main printed circuit board 51 is provided with a socket connector 511 so that a pin insertion hole (not shown) extends in a direction perpendicular to the board surface 51a. On the other hand, a header connector 521 is provided on the sub printed circuit board 52 so that conductive pins (not shown) extend in a direction parallel to the substrate surface 52a. Further, a relay printed circuit board 53 is interposed between the main printed circuit board 51 and the sub printed circuit board 52. A header connector 531 is provided on the front side substrate surface 53a of the relay printed circuit board 53 so that conductive pins (not shown) extend in a direction parallel to the front side substrate surface 53a. Further, a socket connector 532 is provided on the back side board surface 53b of the relay printed board 53 so that a pin insertion hole extends in a direction perpendicular to the back side board surface 53b. Then, by inserting the conductive pins of the relay printed circuit board 53 into the pin insertion holes of the main printed circuit board 51, the main printed circuit board 51 and the relay printed circuit board 53 are coupled. Further, by inserting the conductive pins of the sub-print board 52 into the pin insertion holes of the relay print board 53, the relay print board 53 and the sub-print board 52 are coupled. Thereby, in a state where the main printed circuit board 51 and the sub printed circuit board 52 are coupled via the relay printed circuit board 53, the substrate surface 51a of the main printed circuit board 51 and the substrate surface 52a of the sub printed circuit board 52 are perpendicular to each other. It has become.

JP 2004-192686 A

  However, in the printed circuit board coupling structure 20 according to the first conventional example, there is a problem that the main printed circuit board 21 and the sub printed circuit board 22 in which the substrate surfaces 21a and 22a are perpendicular to each other cannot be combined. . The same applies to the printed circuit board coupling structure 30 according to the second conventional example. Further, according to the printed circuit board coupling structure 40 according to the third conventional example, the main printed circuit board 41 and the sub printed circuit board 42 can be coupled so that the substrate surfaces 41a and 42a are perpendicular to each other. However, if there is no space above the main printed circuit board 21 and the sub printed circuit board 22 is to be arranged on the side, there is a problem that it cannot be handled.

  Further, according to the printed circuit board coupling structure 50 according to the fourth conventional example, the main printed circuit board 51 and the sub printed circuit board 52 can be coupled so that the substrate surfaces 51a and 52a are perpendicular to each other, and the main printed circuit board This also corresponds to the case where the sub-printed board 52 is desired to be disposed on the side of 51. However, in the fourth conventional example, since the relay printed circuit board 53 is necessary, there is a problem that the cost increases and the assembly work becomes complicated as the number of parts increases. In addition, the presence of the relay printed circuit board 53 causes a problem that a so-called high-density mounting in which more electronic components are mounted on the main printed circuit board 51 and the sub printed circuit board 52 cannot be realized. Furthermore, since the wiring length of the pattern circuit is increased due to the interposition of the relay printed circuit board 53, there is a problem that the reliability of transmission is lowered.

  The present invention has been made in consideration of such circumstances, and the object of the present invention is to provide a sub-side so that the angle formed by the board surface is perpendicular to the side of the main printed board without using a relay printed board. It is to provide means for bonding printed circuit boards.

  In order to achieve the above object, the present invention employs the following means. That is, the printed circuit board bonding structure according to the present invention is such that one printed circuit board provided with a header connector having conductive pins and the other printed circuit board provided with a socket connector having pin insertion holes are the conductive pins. Are connected to each other by inserting them into the pin insertion holes, and the header connector is connected to one printed circuit board so that the conductive pins extend substantially parallel to the substrate surface of the one printed circuit board. The socket connector is provided on the other printed circuit board so that the pin insertion hole extends substantially parallel to the board surface of the other printed circuit board, and the conductive pin is inserted into the pin insertion hole. In this state, the substrate surface of one printed circuit board and the substrate surface of the other printed circuit board form a substantially vertical corner.

  According to the printed circuit board coupling structure of the present invention, the other printed circuit board can be coupled to the side of one printed circuit board so that the angle formed by the circuit board surface is vertical without using a relay printed circuit board. it can. Therefore, the cost can be reduced and the assembling work can be simplified because the relay printed circuit board is not necessary. Further, since there is no relay printed board, high-density mounting can be realized on one printed board or the other printed board. Furthermore, since there is no relay printed circuit board, the wiring length of the pattern circuit can be shortened, and the transmission reliability can be improved.

The schematic perspective view which shows the state which looked at the coupling structure 10 of the printed circuit board which concerns on embodiment of this invention from the front side of the socket connector 112. FIG. The schematic perspective view which shows the state which looked at the coupling structure 10 of the printed circuit board which concerns on embodiment of this invention from the front side of the header connector 122. FIG. The schematic perspective view which shows the coupling structure 20 of the printed circuit board which concerns on a 1st prior art example. The schematic perspective view which shows the coupling structure 30 of the printed circuit board which concerns on a 2nd prior art example. The schematic perspective view which shows the joint structure 40 of the printed circuit board which concerns on a 3rd prior art example. The schematic perspective view which shows the coupling structure 50 of the printed circuit board which concerns on a 4th prior art example.

  Embodiments of the present invention will be described below with reference to the drawings. First, a configuration of a printed circuit board coupling structure according to an embodiment of the present invention will be described. FIGS. 1 and 2 are schematic perspective views showing the printed circuit board coupling structure 10. FIG. 1 shows a state when viewed from the front side of the socket connector 112, and FIG. 2 shows a state when viewed from the front side of the header connector 122. Each is shown.

  As shown in FIGS. 1 and 2, the printed circuit board coupling structure 10 has a sub-printed circuit board 12 on the side of the main printed circuit board 11, and the substrate surface 12 a of the main printed circuit board 11 with respect to the substrate surface 11 a. They are combined so that they point in the vertical direction.

  The main printed circuit board 11 is a board body 111 to which a plurality of socket connectors 112 are attached. The board body 111 has a substantially rectangular shape in plan view, and various electronic components (not shown) are mounted on the board surface 11a. The shape and size of the substrate body 111 are not limited to the present embodiment, and can be appropriately changed in design. On the other hand, the socket connector 112 is for electrically connecting the main printed circuit board 11 to another board. The socket connector 112 has a shape in which a rectangular parallelepiped is partially cut out, and a plurality of pin insertion holes 112a are formed on one end face thereof, and positioning protrusions 112b are provided on both left and right side faces thereof. Yes. Further, a taper portion 112c is provided at the tip end portion of the socket connector 112 by cutting off the edge portion obliquely. And the socket connector 112 comprised in this way is being fixed on the board | substrate surface 11a so that the notch part may be engaged with the edge of the board | substrate body 111. FIG. Note that the shape, size, and number of the socket connectors 112 are not limited to those in the present embodiment, and can be appropriately changed in design.

  The pin insertion hole 112a is for establishing an electrical connection between the substrates by inserting conductive pins 123 of the sub-print substrate 12 to be described later. As shown in FIG. 1, each pin insertion hole 112 a extends in a direction substantially parallel to the substrate surface 11 a of the substrate body 111, and the depth thereof is formed to be substantially equal to the length of the conductive pin 123. Although not shown in detail in FIG. 1, each pin insertion hole 112 a is electrically connected to an electronic component mounted on the board body 111. Note that the shape, number and arrangement of the pin insertion holes 112a can be appropriately changed according to the shape, number and arrangement of the conductive pins 123.

  The positioning protrusion 112b is for guiding the fitting of the socket connector 112 to a header connector 122 described later. As shown in FIG. 1, the positioning projection 112b has an elongated shape with a substantially rectangular cross section, and is formed on both side surfaces of the socket connector 112, more specifically, on the lower and right sides on the left side surface toward the pin insertion hole 112a. It is provided in the upper part in a side surface, respectively. And the front-end | tip part of each positioning protrusion 112b is in the state which protruded from the end surface of the socket connector 112 a little. The shape, position, and number of the positioning protrusions 112b are not limited to the present embodiment, and can be appropriately changed in design.

  The sub-printed circuit board 12 has a plurality of header connectors 122 attached to a circuit board body 121. The board body 121 has a substantially rectangular shape slightly smaller than the board body 111 of the main printed circuit board 11 in plan view, and various electronic components (not shown) are mounted on the board surface 12a. The shape and size of the substrate body 121 are not limited to the present embodiment, and can be appropriately changed in design. On the other hand, the header connector 122 is for electrically connecting the sub printed circuit board 12 to another board. The header connector 122 has a shape in which a rectangular parallelepiped is partially cut out. A concave groove 122a is formed at the distal end of the header connector 122, and a plurality of conductive pins 123 project from the bottom surface of the concave groove 122a, and positioning grooves 122b are provided on the left and right side surfaces of the concave groove 122a. It has been. In addition, a tapered portion 122c is also provided at the distal end portion of the header connector 122 by cutting off the opening edge portion obliquely. The header connector 122 configured as described above is fixed on the substrate surface 12 a so that the cut-out portion is engaged with the edge of the substrate body 121. Note that the shape, size, and number of the header connectors 122 are not limited to the present embodiment, and can be appropriately changed in design.

  The concave groove 122a is for fitting the tip of the socket connector 112. As shown in FIG. 2, the concave groove 122 a has a cross-sectional shape that substantially matches the cross-sectional shape of the socket connector 112, and the depth of the concave groove 122 a is approximately the same as the length of the socket connector 112 protruding sideways from the board body 111. It has become. The cross-sectional shape and depth of the concave groove 122a can be changed as appropriate according to the shape of the tip of the socket connector 112.

  The conductive pins 123 are inserted into the pin insertion holes 112a of the main printed board 11 to establish electrical connection between the boards. Each conductive pin 123 is made of a conductive member, and extends in a direction substantially parallel to the substrate surface 12a of the substrate body 121 as shown in FIG. 2, and its length is formed to be approximately the same as the depth of the concave groove 122a. ing. Although not shown in detail in the drawing, each conductive pin 123 is electrically connected to an electronic component mounted on the board body 121. The shape, number, and arrangement of the conductive pins 123 are not limited to the present embodiment, and can be appropriately changed in design.

  The positioning groove 122b is for guiding the fitting of the socket connector 112 to the header connector 122. As shown in FIG. 2, the positioning groove 122 b has a cross-sectional shape that substantially coincides with the cross-sectional shape of the positioning protrusion 112 b, and is formed on both side surfaces of the concave groove 122 a, more specifically, on the left side surface toward the conductive pin 123. Are respectively provided so as to extend in a direction substantially parallel to the substrate surface 12a of the substrate body 121. The end of each positioning groove 122b reaches the bottom surface of the concave groove 122a. Note that the shape, position, and number of the positioning grooves 122b can be appropriately changed according to the shape, position, and number of the positioning protrusions 112b.

  Next, a manufacturing procedure and operational effects of the printed circuit board coupling structure 10 according to the present embodiment will be described. When the sub printed circuit board 12 is coupled to the main printed circuit board 11, first, the sub printed circuit board 12 is placed on the side of the main printed circuit board 11 so that the substrate surface 12 a is substantially perpendicular to the substrate surface 11 a of the main printed circuit board 11. Arrange. Then, the socket connector 112 is fitted into the concave groove 122a of the header connector 122 from the tip end portion thereof while inserting the positioning protrusion 112b into the positioning groove 122b. At this time, since the taper portions 112c and 122c are provided on the front end edge portion of the socket connector 112 and the opening edge portion of the header connector 122, respectively, the edges can be smoothly engaged without being caught. .

  Then, by sliding the positioning protrusion 112b along the positioning groove 122b, the conductive pins 123 of the header connector 122 are inserted into the pin insertion holes 112a of the socket connector 112, respectively. At this time, by sliding the positioning protrusion 112b along the positioning groove 122b, each conductive pin 123 is accurately guided to the position of each pin insertion hole 112a, so that each conductive pin 123 is placed on the end surface of the socket connector 112 or the like. It won't be bent or buckled. Furthermore, even if the socket connector 112 is erroneously fitted to another connector in which the positioning groove 122b is not formed, the positioning projection 112b cannot be fitted due to obstruction, so that such an artificial It is possible to prevent mistakes.

  Thereafter, the positioning protrusion 112b is further slid along the positioning groove 122b, and the conductive pins 123 are inserted into the pin insertion holes 112a until the positioning protrusion 112b reaches the end of the positioning groove 122b. Thereby, the electronic component of the sub printed circuit board 12 is electrically connected to the electronic component of the main printed circuit board 11 from the conductive pin 123 through the pin insertion hole 112a. Here, as described above, the positioning protrusion 112b slightly protrudes from the end surface of the socket connector 112, and the end of the positioning groove 122b is the position of the bottom surface of the concave groove 122a. Therefore, when the positioning protrusion 112b reaches the end of the positioning groove 122b, the end surface of the socket connector 112 stops at a position immediately before reaching the bottom surface of the concave groove 122a. Thereby, it can prevent that the end surface of the socket connector 112 and the bottom face of the ditch | groove 122a contact, and are mutually damaged.

  By the above procedure, the sub printed circuit board 12 is coupled to the side of the main printed circuit board 11 so that the circuit board surface 12a is oriented in a direction substantially perpendicular to the circuit board surface 11a of the main printed circuit board 11. Only the header connector 122 and the socket connector 112 are used for this connection, and no relay printed circuit board is required. Therefore, the cost can be reduced and the assembling work can be simplified because the relay printed circuit board is not necessary. Further, since there is no relay printed circuit board, high-density mounting can be realized on the main printed circuit board 11 and the sub printed circuit board 12. Furthermore, since there is no relay printed circuit board, the wiring length of the pattern circuit can be shortened, and the transmission reliability can be improved.

  In this embodiment, the socket connector 112 is attached to the main printed circuit board 11 and the header connector 122 is attached to the sub printed circuit board 12, but conversely, the header connector 122 is attached to the main printed circuit board 11 and the sub printed circuit board. The socket connectors 112 may be attached to the twelve.

  In this embodiment, the socket connector 112 is fitted into the concave groove 122a formed in the header connector 122. Conversely, the header connector 122 is fitted into the concave groove formed in the socket connector 112. Also good. In this case, a conductive pin is provided at the front end of the header connector 122 so as to protrude from the end face, while a concave groove is formed at the front end of the socket connector 112, and a pin insertion hole is provided at the bottom of the concave groove. Further, both the header connector 122 and the socket connector 112 may be provided with protruding conductive pins on the end face of the header connector 122 without forming a concave groove, while the end face of the socket connector 112 may be provided with a pin insertion hole.

  In the present embodiment, the tapered portions 112c and 122c are provided on both the front end edge portion of the socket connector 112 and the opening edge portion of the header connector 122. However, at least one of the connectors may be provided with the tapered portions 112c and 122c. It's enough.

  It should be noted that the shapes, combinations, manufacturing procedures, and the like of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

10 ... Printed circuit board coupling structure 11 ... Main printed circuit board (the other printed circuit board)
11a: Board surface (the other printed circuit board)
12 ... Sub printed circuit board (one printed circuit board)
12a: Board surface (one printed circuit board)
112 ... Socket connector 112a ... Pin insertion hole 122 ... Header connector 123 ... Conductive pin

Claims (3)

One printed circuit board provided with a header connector having conductive pins and the other printed circuit board provided with a socket connector having pin insertion holes are coupled to each other by inserting the conductive pins into the pin insertion holes. Printed circuit board coupling structure,
The header connector is provided on one printed circuit board so that the conductive pins extend substantially parallel to the substrate surface of one printed circuit board, while the pin insertion hole is approximately parallel to the substrate surface of the other printed circuit board. The socket connector is provided on the other printed circuit board so as to extend,
A printed circuit board coupling structure, wherein a substrate surface of one printed circuit board and a substrate surface of the other printed circuit board form a substantially vertical corner in a state where the conductive pins are inserted into the pin insertion holes.   One of the header connector and the socket connector is formed with a concave groove capable of fitting the other, and at least one of the opening edge and the other end edge of the concave groove is tapered. The printed circuit board coupling structure according to claim 1, wherein:   The positioning projection is provided at one end of either the header connector or the socket connector, and the positioning groove having a shape to be fitted to the positioning projection is provided at the other end. 3. The printed circuit board coupling structure according to any one of 1 and 2.

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