JP2003243792A - Connection structure of printed board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure for a printed board, in which the number of connection terminals are increased by dividing a connection part into a plurality of sub-parts without deteriorating the soldering reliability of the connection part of the printed boards. <P>SOLUTION: The structure comprises; a first printed board provided with a plurality of insertion holes and a plurality of first wiring patterns around the insertion holes; and a second printed board provided with a plurality of joints with second wiring patterns that are inserted into the insertion holes and connected to the first wiring patterns. A signal wiring pattern is formed around one of the insertion holes, a high-current wiring pattern is formed around one of the other insertion holes, and some patterns out of the first or the second wiring patterns are formed between the insertion holes. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board connection structure for connecting printed circuit boards to each other in a mutually orthogonal manner.

[0002]

2. Description of the Related Art A printed circuit board arranged in a camera is often arranged in a gap between a camera body and a cover or each structure serving as an exterior member. In particular, a printed circuit board on which a sequence controller for controlling the operation of the camera is mounted needs an arrangement place.

For example, in a compact camera, it is desired to reduce the size of the entire camera in order to facilitate portability and handling. For this reason, in such a camera, it is desired that a built-in printed circuit board inside the camera be compactly assembled with a layout configuration that is as efficient as possible.

Further, in recent years, the functions of cameras have become more sophisticated and the electric circuits to be mounted have become more complicated, so that the printed circuit board is often installed in a plurality of parts.

As a method of connecting printed boards to each other, for example, there is a method described in Japanese Utility Model Publication No. 51-46622. In this method, as shown in FIG. 4, a small printed board having at least one side cutting portion for positioning and one-sided drop prevention and a plurality of leg pieces connected to these cutting portions and having different sizes is prepared. Even before soldering the small printed circuit board to the main printed circuit board by press-fitting each leg having the locking slope portion of the small printed circuit board into the main printed circuit board having the mounting holes provided corresponding to each of the leg printed circuit boards. I tried to fix it by eating.

[0006]

However, due to the sophistication of the function of the camera and the complication of the electric circuit, the conventional small printed circuit board described above has a small mountable area, and the degree of freedom in the mounting layout of the components is also reduced. However, since all the components are mounted, a large number of small printed circuit boards are required, and it is difficult to make an efficient layout configuration of the printed circuit boards, which leads to an increase in the size and cost of the camera. It was

An object of the invention according to the present application is to improve a connection structure between printed circuit boards arranged in a camera, and
It is possible to prevent the camera and the printed circuit board from increasing in size.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention has a plurality of insertion openings and a plurality of first wiring patterns around the insertion openings. A printed circuit board and a second printed circuit board having a plurality of joints having a second wiring pattern that is inserted into the insertion port and that can be soldered to the first wiring pattern. A wiring pattern for signals is formed around at least one of the insertion openings, a wiring pattern for high current is formed at at least one of the other insertion openings, and between the plurality of insertion openings. Forming a part of the first or second wiring pattern.

In order to solve the above-mentioned problems, in the invention according to claim 2 of the present invention, the length of the insertion opening and the connecting portions inserted into the insertion opening is approximately one.

Therefore, according to the present invention, the wiring pattern can be laid out by utilizing between the plurality of insertion openings provided on the printed circuit board, and the number of connection terminals and wiring between the printed circuit boards can be increased. It is possible to improve the efficiency of the layout of the printed circuit board.

Further, according to the present invention, since the plurality of insertion openings provided on the printed circuit board have substantially the same length, the balance and strength of the entire printed circuit board are not impaired, and the printed circuit board at the time of mounting is mounted. It is possible to prevent the warp and the outer shape deformation.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment) FIGS. 1 to 3 show a printed circuit board connection structure according to an embodiment of the present invention. In the figure, 9 is a first printed circuit board, and 13
Is a second printed circuit board. At the end of the first printed board 9, insertion ports 10A and 10B for inserting the joints 14A and 14B at the end of the second printed board 13 and having substantially the same length are formed. Note that, as shown in FIG. 2 (a cross-sectional view taken along the line AA in FIG. 1), the dimension L1 of the insertion port is
Is set to be larger than the thickness of the second printed circuit board 13.

Further, on the front and back surfaces of the second printed board 13, a wiring pattern 15A for high voltage and high current of a strobe circuit including a charging circuit such as a boosting electric part and a wiring pattern for signals etc. 15B is formed, and a part of the extended high voltage / high current wiring pattern 15A and the signal wiring pattern 15B has a high voltage / high current connection terminal land 16A and a signal connection terminal. The land 16B is provided, and on the front and back surfaces of the first printed circuit board 9, a part of the high voltage and high current wiring pattern wiring pattern 11A of a strobe circuit including a charging circuit such as a boosting electric component is provided. A wiring pattern 11B for signals and the like is formed, and the wiring pattern 11A for high voltage and high current and the wiring pattern 11B for signal are formed.
Are the insertion openings 10A and 10A provided on the first printed circuit board 9.
A part of the second printed circuit board 13 extending to the periphery of B is connected to the high voltage / high current connection terminal land 16A and the signal connection terminal land 16B, and a part of the second printed circuit board 13 is connected to the high voltage / high current connection terminal land. 12A and a signal connection terminal land 12B are formed.

Further, as the function of the camera becomes higher and the electric circuit becomes more complicated, the layout can be made more efficient and a larger number of signals can be connected. Wiring patterns are laid out using L2 between 10B.

Therefore, since the wiring pattern is routed by utilizing the space L2 between the insertion openings 10A and 10B provided on the first printed board 9, the number of connection terminal lands between the printed boards can be increased. Moreover, it is not necessary to newly add a space necessary for routing the wiring pattern, and the protrusion amount L3 for the wiring pattern on the front surface side of the first printed circuit board 9 can be shortened, so that the entire printed circuit board is compact. In addition, since the space L2 between the insertion ports can be used as a reinforcing portion of the printed circuit board, the external shape of the first printed circuit board 9 is deformed by heat from the outside when mounting the electric component. It is also effective in preventing warpage.

To connect the first and second printed circuit boards 9 and 13 formed in this way, first, the second printed circuit board 13 should be inserted into the insertion openings 10A and 10B of the first printed circuit board 9. The joining portions 14A and 14B are inserted through. As a result, part of the second printed circuit board 13 has high voltage and high current connection terminal lands 16A and signal connection terminal lands 16B that are provided on the first printed circuit board 9 for high voltage and high current. It is positioned at a position corresponding to the connection terminal land 12A and the signal connection terminal land 12B.
Next, these connection terminal lands 12A, 12B, 16
A and 16B are soldered and electrically connected.

[0017]

As described above, according to the present invention described in claims 1 to 3, the lengths provided on the printed circuit board 9 are substantially the same between the insertion openings 10A and 10B. Since the wiring pattern is formed using L2, the length L3 protruding toward the front surface of the printed circuit board can be shortened, and the number of connecting terminals can be increased more than ever before. Since the necessary wiring pattern can be routed correspondingly, the reliability of soldering of the plurality of printed boards is not impaired, and the entire printed board can be made compact.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a connected state of a printed circuit board that is an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a connection state of a printed circuit board that is an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a printed circuit board according to an embodiment of the present invention in a connected state.

FIG. 4 is an explanatory diagram of a connected state of a conventional printed circuit board.

[Explanation of symbols]

1 Small printed circuit board 2, 3 mounting holes 4, 5 excision part 6, 7 leg pieces 8 Main printed circuit board 9 First printed circuit board 10A, 10B insertion slot 11A Part of wiring pattern for high voltage and high current 11B signal wiring pattern 12A Part of high voltage, high current connection terminal land 12B signal connection terminal land 13 Second printed circuit board 14A, 14B joint 15A Part of wiring pattern for high voltage and high current 15B signal wiring pattern 16A Part of connection terminal land for high voltage and high current 16B signal connection terminal land L1 insertion slot dimensions Between the L2 insertion ports L3 protrusion amount

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5E077 BB31 BB38 CC16 DD01 JJ21                 5E338 BB17 CC01 CC04 CD11 EE23                       EE27                 5E344 AA08 AA12 BB02 BB06 CC05                       CC07 CC23 DD02 DD15 EE13                       EE26 EE30

Claims (2)

[Claims] 1. A first printed circuit board having a plurality of insertion openings and a plurality of first wiring patterns around the insertion openings, and a solder connection with the first wiring patterns inserted into the insertion openings. A second printed circuit board having a plurality of joints having a second wiring pattern, wherein a signal wiring pattern is formed around at least one of the plurality of insertion openings, and A high current wiring pattern is formed in at least one of the insertion openings, and a part of the first or second wiring pattern is formed between the plurality of insertion openings. Printed circuit board connection structure. 2. The printed circuit board connecting structure according to claim 1, wherein the insertion opening and the connecting portion inserted into the insertion opening are substantially one in length.