JP2004134411A - Printed circuit board connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed board connection structure capable of reducing the cost while reducing the number of assembling man-hour. <P>SOLUTION: As for the printed board connection structure connecting two printed boards 1, 2 facing each other, a connector 4 is arranged on the printed board 1 at one side, and a pattern surface 5 is arranged on the printed board 2 at the other side. A contact terminal 3 contacting with the pattern surface 5 in a manner of wiping is arranged to the connector 4. The contact terminal 3 is made to elastically contact with the pattern surface 5. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a printed board connection structure for connecting two facing printed boards.

Conventionally, as a printed board connecting structure for connecting two facing printed boards 1 and 2, posts 50 arranged between the printed boards 1 and 2 as shown in FIG. The female connector 60 or the male connector 61 is provided on the opposing surface of each of the printed circuit boards 1 and 2 as shown in FIG. 31, and the connectors 60 and 61 are fitted and connected. I do it by doing.

Further, as a printed board connecting structure for connecting two facing printed boards 1 and 2, for example, Japanese Utility Model Application Laid-Open No. 64-54267 (Patent Document 1) and Japanese Patent Application Laid-Open No. 63-266786 (Patent Document 2) And so on.
JP-A-64-54267 JP-A-63-266786

However, in the configuration shown in FIG. 30, the posts 50 are directly fixed to the printed boards 1 and 2 by soldering 51, so that the printed boards 1 and 2 cannot be removed. Further, at the time of assembling, it is necessary to solder each post 50 to the pattern surface 51, which requires a lot of time and labor for connection, and causes a problem that the number of assembling steps is increased.

(3) Further, in the connector as shown in FIG. 31, two connectors, the male connector 61 and the female connector 60, are required, and there is a problem that the number of parts increases and the cost increases. Further, as a printed board connecting structure for connecting two facing printed boards 1 and 2, for example, Japanese Utility Model Application Laid-Open No. 64-54267 (Patent Document 1) and Japanese Patent Application Laid-Open No. 63-266786 (Patent Document 2) And the like, but in these devices, a configuration is adopted in which the contact terminals are inserted and connected to the connection holes without elastically contacting the pattern surface. When the stacking heights are different, it is difficult to cope with the same parts.

The object of the present invention is to solve the above problems, and an object of the present invention is to provide a printed circuit board connection structure that can reduce the number of assembling steps and reduce the cost.

In order to achieve the above object, according to the present invention, in a printed board connection structure for connecting two facing printed boards, a connector is provided on one printed board, and a pattern face is provided on the other printed board. A contact terminal for wiping contact is provided on the connector, and the contact terminal is elastically contacted with the pattern surface.

接触 Also, a contact portion that makes a point contact with the pattern surface may be provided in the contact terminal.

接触 Also, a contact portion that makes line contact with the pattern surface may be provided in the contact terminal.

位置 決 め Furthermore, a positioning portion comprising a recess or a hole may be provided on the pattern land surface with which the contact portion of the contact terminal comes into contact.

(4) The positioning projection protruding from the connector housing constituting the connector may be inserted into a positioning hole formed in the other printed circuit board.

The two printed circuit boards facing each other are connected by making the contact terminals of the connector mounted on one printed circuit board elastically contact the pattern surface of the other printed circuit board. There is no need to perform soldering work or use a large number of connectors, so that the number of assembly steps can be reduced and the cost can be reduced.

The present invention relates to a printed circuit board connection structure for connecting two facing printed circuit boards, wherein a connector is provided on one printed circuit board, a pattern surface is provided on the other printed circuit board, and a contact terminal for wiping contact with the pattern surface is connected to the connector. And the contact terminals are resiliently contacted with the pattern surface, so that even when the stacking height between each printed circuit board is different, it can be handled by the same parts, and for each printed circuit board. Therefore, it is not necessary to perform soldering work or use a large number of connectors, so that the number of assembling steps can be reduced and the cost can be reduced. Further, when the contact terminal comes into contact with the pattern surface, the position where the contact terminal starts to contact and the position where the contact terminal contacts after pressing are different from each other, so that the contact surface can be cleaned by wiping.

(4) In the case where a contact portion that makes line contact with the pattern surface is provided on the contact terminal, the contact portion can be brought into contact with the pattern land surface while taking measures against fine sliding wear.

In addition, in the case where a positioning portion formed of a recess or a hole is provided on the pattern land surface with which the contact portion of the contact terminal contacts, when the contact portion of the contact terminal is fitted into the positioning portion, the joining is performed. Is unlikely to occur, and the contact reliability can be improved.

Further, in a configuration in which a positioning projection protruded from a connector housing constituting a connector is inserted into a positioning hole formed in the other printed circuit board, the positioning projection is formed in the other printed circuit board. By inserting the printed circuit board into the positioning hole, the other printed circuit board can be mounted while preventing the positional deviation and ensuring the positioning.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.

A connector 4 is mounted on one of the two printed boards 1 and 2 facing each other, and a pattern surface 5 is formed on the other printed board 2 so as to protrude from the connector 4. The two printed boards 1 and 2 are electrically connected by making the contact terminals 3 elastically contact the pattern surface 5.

As shown in FIGS. 2 and 3, the connector 4 mounted on one printed circuit board 1 has a large number of contacts 24 on a connector housing 6 having an intermediate wall 23 having a T-shaped cross section along an intermediate portion in the longitudinal direction. The main body is configured by mounting. As shown in FIG. 2 (c), storage portions 25 are provided on both sides of the intermediate wall 23, and the storage portions 25 adjacent in the longitudinal direction are partitioned by partition plates 26, respectively. The contacts 24 are housed and arranged in a number of housing sections 25 provided in the housing 6. A suction surface 7 is provided at an intermediate portion along the longitudinal direction of the connector housing 6 in which a large number of storage portions 25 are provided on both sides along the longitudinal direction, and the presence of the suction surface 7 causes the connector housing 6 to be mounted by a mounting machine. It can be moved by suction, and can be adapted to automatic mounting using a mounting machine.

As shown in FIG. 9, a mounting portion 9 for mounting a spacer 8 is provided on an outer surface of the connector housing 6, and the two printed circuit boards facing each other by mounting the spacer 8 on the mounting portion 9 are provided. The stacking height between 1 and 2 can be adjusted.

The spacer 8 is formed in a U-shape by projecting a connecting piece 28 from both ends of the main body 27 so as to be orthogonal to the main body 27, and is continuous with the connecting piece 28 along the longitudinal direction of the connecting piece 28. A slit 29 is provided. The suction surface 7 is formed on the outer surface of the main body 27 constituting the spacer 8, and even if the spacer 8 is attached to the connector housing 6, the connector housing 6 can be sucked and moved together with the spacer 8 by the mounting machine. It is possible to support automatic mounting.

The mounting portion 9 is formed by projecting a connecting convex portion 31 outward from a concave portion 30 formed so that both side surfaces of the connector housing 6 are depressed inward. The spacer 8 is attached to the connector housing 6 by fitting the connecting piece 28 into the connector 30 and engaging the connecting protrusion 31 with the slit 29 provided in the connecting piece 28.

The contact 24 housed and arranged in the housing part 25 has a contact terminal 3 integrally provided at one end of a body part 32 housed and arranged in the housing part 25, and a fixed terminal plate 33 at the other end of the body part 32. The main body is formed integrally. The contact terminal 3 is formed in a substantially U-shape, and a contact portion 10 is formed at an outer edge portion, and the contact portion 10 comes into contact with a pattern land surface 11 provided on the printed circuit board 2. . The contact terminals 3 project outward from the storage portion 25 as shown in FIG. 3 in a state where the contacts 24 are stored and disposed in the storage portion 25. The fixed terminal plate 33 projects laterally from the lower part of the storage portion 25. The fixed terminal plate 33 protruding from the storage portion 25 places the connector housing 6 on the upper surface of one printed circuit board 1. In this state, the connector terminal 6 is mounted on a pattern surface provided on one printed circuit board 1, and the connector housing 6 is attached to the printed circuit board 1 with the attachment of the contact 24 by soldering the fixed terminal board 33. It can be attached.

The contact terminal 3 disposed so as to protrude outward from the storage portion 25 has elasticity, and the contact portion 10 elastically contacting the pattern surface 5 is brought into wiping contact with the pattern surface 5. ing. That is, as shown in FIG. 5, when the other printed circuit board 2 is moved to the contact 24 side, the position where the contact starts to contact and the contact position after pressing are different, and the cleaning effect of the contact surface by wiping is obtained. Is caused. In addition, even if the stacking height between the printed boards 1 and 2 is different as shown in FIG. 6 or 7 by making the wiping contact, the contact terminal 3 can be securely connected to the pattern land surface 11. The printed circuit boards 1 and 2 can be brought into contact with each other to cope with a difference in stacking height between the printed boards 1 and 2. When the height position of the contact terminal 3 is changed, the main body 32 is bent using a processing device 34 such as a jig or a press die as shown in FIG. Is changed, the height of the contact terminal 3 can be changed to an arbitrary height.

The shape of the contact portion 10 that comes into contact with the pattern surface 5 includes a shape that makes a point contact with the pattern surface 5 as shown in FIG. 10 and a shape that makes a line contact with the pattern surface 5 as shown in FIG. Conceivable. The state of contact with the pattern surface 5 is changed in accordance with the state of plating on the contact terminal 3. When gold plating is performed, a semi-arc-shaped contact portion 10a is protruded from the contact terminal 3 to form a pattern surface. The point 5 is brought into a point contact by making an R surface contact or a spherical surface contact.

In the case of solder plating or no plating, the contact terminal 3 is cut in the middle to form a contact portion 10b, and the cut surface is brought into edge contact with the pattern surface 5 so as to make line contact. The edge portion makes it possible to bring the contact portion 10b into contact with the pattern land surface 11 while taking measures against fine sliding wear.

(4) The pattern land surface 11 provided on the other printed circuit board 2 may be provided with a positioning portion 14 including a recess 12 or a hole 13. In FIG. 12, a dimple serving as a recess 12 is provided in each pattern land surface 11 so as to form a positioning portion 14, and the contact portion 10 of the contact terminal 3 is formed as shown in FIG. It fits inside.

FIG. 14 shows a structure in which a through hole as a hole 13 is formed in the pattern land surface 11 to thereby form a positioning portion 14. The contact portion 10 of the contact terminal 3 is shown in FIG. As described above.

Then, since the contact portion 10 of the contact terminal 3 is fitted into the positioning portion 14 as described above, displacement during joining is unlikely to occur, and contact reliability can be improved.

FIG. 16 shows another embodiment of the connector housing 6. In this embodiment, a pair of positioning projections 15 project from the outer surface of the connector housing 6, and the positioning projections 15 are shown in FIG. As described above, by inserting the printed circuit board 2 into the positioning hole 16 formed in the other printed circuit board 2 to prevent displacement, the other printed circuit board 2 can be mounted while the positioning is reliably performed.

FIGS. 18 to 21 show a reference example of the connector housing 6, in which the upper portion of the connector housing 6 is inserted into an opening 1a provided in one printed circuit board 1. FIG. Thus, the printed boards 1 and 2 can be arranged in a state of being superimposed on each other. A fixing bracket 17 protruding outward is provided at both ends of the connector housing 6, and the fixing bracket 17 is brought into contact with an opening edge of an opening 1 a provided on one of the printed circuit boards 1 so that one printed circuit board is provided. Thus, the accuracy of the mounting position of the connector housing 6 with respect to the connector 1 can be improved. That is, as shown in FIG. 21, when the upper part of the connector housing 6 is inserted into the opening 1a, the fixed terminal plate 33 of each contact 24 is formed on the opening edge of the lower surface of one printed circuit board 1. The contact piece 17a of the fixture 17 abuts against the opening edge of the opening 1a where the pattern surface 41 is not formed, and the contact terminal 3 of each contact 24 is more than necessary than the opening 1a. It does not protrude so much that the connector housing 6 is securely positioned with respect to one of the printed circuit boards 1 at the time of attachment, and the load is supported by the fixing bracket 17 when pressed. The load can be prevented from acting on the soldered portion 38 for fixing the fixed terminal board 33. By changing the height of the contact terminals 3, the stacking height between the printed circuit boards 1 and 2 can be made 0 mm or more. Here, the mounting of the connector housing 6 to one printed circuit board 1 is fixed by soldering 38 the fixed terminal plate 33 of each contact 24 to the pattern surface 41 as shown in FIG.

FIGS. 22 to 25 show another reference example of the connector housing 6, in which embedded nuts 18 are embedded at both ends of the connector housing 6. 2 are provided with through holes 35 and 36 so as to correspond to the positions of the embedded nuts 18. The through holes in the other printed circuit board 2 in a state in which the connector housing 6 and the printed circuit boards 1 and 2 are stacked vertically. The connection bolts 19 are screwed into the embedded nuts 18 from 36 through the through holes 35 of the printed circuit board 1 so that the printed circuit boards 1 and 2 and the connector housing 6 are mutually connected and fixed. In this case, positioning step portions 37 are formed on the upper ends of both ends of the connector housing 6, and the upper surface of the positioning step portions 37 forms the pattern surface 41 of the opening 1 a provided in one printed circuit board 1. The contact terminal 3 of the contact 24 does not protrude more than necessary from the opening 1 a by being in contact with the opening edge that is not provided, and a load is not applied to the soldering 38 portion fixing the fixed terminal plate 33. The printed circuit board 1 and the connector housing 6 can be interconnected and integrated. Even in this case, the stacking height between the printed boards 1 and 2 can be made 0 mm or more by changing the height of the contact terminal 3 or the height of the positioning step 37. Here, the attachment of the connector housing 6 to one printed circuit board 1 is fixed by soldering 38 the fixed terminal plate 33 of each contact 24 to the pattern surface 41 as shown in FIG.

26 to 29 show still another reference example of the connector housing 6. In this embodiment, the connection projections 20 are provided so as to project upward from the upper surfaces of both ends of the connector housing 6, respectively. In addition, connection holes 21 and 22 are formed in each of the printed circuit boards 1 and 2 so as to correspond to the positions of the connection protrusions 20, and the connector housing 6 and each of the printed circuit boards 1 and 2 are vertically stacked. By inserting the connecting projections 20 into the connecting holes 21 and 22 formed in the printed circuit boards 1 and 2, the printed circuit boards 1 and 2 and the connector housing 6 can be used without using other members such as connecting bolts. Can be mutually connected and integrated.

The connection protrusion 20 is constituted by a pair of protrusions 20b having a locking claw 20a at the tip, and each protrusion 20b is adapted to bend in a direction approaching and separating from each other. After being inserted into the two connection holes 21 and 22, the locking claw 20a engages with the opening edge of the connection hole 21 provided on the other printed circuit board 2 so that they are mutually connected and integrated. I have. Here, the attachment of the connector housing 6 to one printed circuit board 1 is fixed by soldering 38 the fixed terminal plate 33 of each contact 24 to the pattern surface 41 as shown in FIG.

It is sectional drawing which shows one Example of this invention. 3A and 3B show a connector, wherein FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a cross-sectional view taken along the line II-II of FIG. It is a perspective view of a connector. FIG. 3 is a plan view showing a pattern surface formed on a printed board. It is explanatory drawing explaining the effect | action of a contact terminal. (A) is sectional drawing which shows one Example of the arrangement state of a contact terminal, (b) is sectional drawing which shows the arrangement state of a contact terminal. (A) is sectional drawing which shows the other Example of the arrangement | positioning state of a contact terminal, (b) is sectional drawing which shows the arrangement | positioning state of a contact terminal. It is explanatory drawing explaining the processing procedure of a contact terminal. It is a perspective view which shows a connector and a spacer. 7A and 7B show a contact state in another embodiment of the contact terminal, in which FIG. 7A is a partial side view, and FIG. It is a figure which shows the contact state in further another Example of a contact terminal, (a) is a partial side view, (b) is a partial front view. 4A and 4B show an embodiment of a positioning portion provided on a pattern land surface, wherein FIG. 4A is a plan view and FIG. 4B is a cross-sectional view. It is sectional drawing which shows the contact state of the same contact terminal. FIGS. 6A and 6B show another embodiment of a positioning portion provided on a pattern land surface, wherein FIG. 6A is a plan view and FIG. It is sectional drawing which shows the contact state of the same contact terminal. FIGS. 4A and 4B show another embodiment of the connector, in which FIG. 4A is a plan view and FIG. FIG. 2 is a cross-sectional view showing a state in which the connector and the printed circuit board are joined together. It is a reference example of a connector, (a) is a top view, (b) is a front view, (c) is a side view. It is a side view which shows the arrangement state of the connector same as the above. It is sectional drawing which shows the arrangement | positioning state of the connector same as the above. It is an exploded perspective view of the same. FIGS. 5A and 5B show another reference example of the connector, in which FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view. It is a side view which shows the arrangement state of the connector same as the above. It is sectional drawing which shows the arrangement | positioning state of the connector same as the above. It is an exploded perspective view of the same. FIGS. 6A and 6B show still another reference example of the connector, wherein FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. It is a side view which shows the arrangement state of the connector same as the above. It is sectional drawing which shows the arrangement | positioning state of the connector same as the above. It is an exploded perspective view of the same. It is sectional drawing which shows a prior art example. 7A and 7B show another conventional example, in which FIG. 7A is a sectional view showing a state before connection, and FIG. 7B is a sectional view showing a state after connection.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Printed circuit board 2 Printed circuit board 3 Contact terminal 4 Connector 5 Pattern surface 6 Connector housing 10 Contact part 10a Contact part 10b Contact part 11 Pattern land surface 12 Depression 13 Hole 14 Positioning part 15 Positioning protrusion 16 Positioning hole

Claims (5)

In a printed circuit board connection structure for connecting two facing printed boards, a connector is provided on one printed circuit board, a pattern surface is provided on the other printed circuit board, and a contact terminal for wiping contact with the pattern surface is provided on the connector. A printed circuit board connection structure wherein terminals are elastically contacted with a pattern surface. 2. The printed circuit board connection structure according to claim 1, wherein a contact portion that makes a point contact with the pattern surface is provided on the contact terminal. 2. The printed circuit board connection structure according to claim 1, wherein a contact portion that makes line contact with the pattern surface is provided on the contact terminal. 4. The printed circuit board connection structure according to claim 1, wherein a positioning portion comprising a recess or a hole is provided on the pattern land surface with which the contact portion of the contact terminal contacts. 5. The printed circuit board connection structure according to claim 1, wherein a positioning projection protruding from a connector housing constituting the connector is inserted into a positioning hole formed in the other printed circuit board.

Images