JP2566167Y2 - Connection structure of printed circuit board - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is suitable for use in electrically connecting terminals of a conductor pattern on two printed circuit boards in various electronic devices and devices such as precision machines such as cameras. The present invention relates to a simple printed circuit board connection structure.

[0002]

2. Description of the Related Art In order to electrically connect terminals of a conductor pattern formed on each of two printed circuit boards on which a conductor pattern is printed and wired, the terminals are joined together. Generally, the ends of the lead wires are connected to the terminals on each board by soldering, or the terminals of the conductor patterns on both boards are connected directly by soldering, so-called solder bridges. I was

[0003]

However, in such a conventional connection structure, soldering is performed to connect the terminal portions of the conductor pattern on the printed circuit board, so that the assembling work at the time of connection is troublesome. In addition to this, there is a problem that not only is it troublesome, but also the work for disassembly is complicated, and the removal is troublesome.

In order to solve such a problem,
Various measures have been taken from
No. 117702 (Japanese Utility Model Laid-Open No. 59-23183) and
With structure shown in JP-A-62-42485
Has been proposed.

For example, it is assumed that the former is similar to the prior art.
Connection structure of printed circuit board as shown in FIGS. 1 and 2
Is considered. To briefly explain this, these
In the drawings, reference numeral 1 denotes a book for various electric appliances and devices.
Base member made of body body etc., 2 and 3 are this base member
No. 1 screwed to each mounting part with screws 4 and 4
It is a 1st and 2nd printed circuit board. Where these
Appropriate arrangement is provided on the first and second printed circuit boards 2 and 3.
A conductor pattern (not shown) is formed so as to form a line circuit.
It is formed by printed wiring.

With respect to the base member 1 as described above,
Screws so that they can be combined almost perpendicular to
In the first and second printed circuit boards 2 and 3
Terminals of the conductor pattern exposed at each edge
When electrically connecting the
The edge of the printed circuit board (second printed circuit board 3) is shown in FIG.
It is formed by bending as shown in FIG.
Of the other printed circuit board (first printed circuit board 2)
A part (edge shown by 3b in the figure) parallel to the part 2a is provided.
And the printed circuit boards 2 and 3 are parallel to each other.
Exposed on the opposing surfaces of the edge portions 2a and 3b, respectively.
Terminal parts of the conductor pattern are sandwiched between them
Obtained by the anisotropic conductor 5 as the press-connecting means to be used.
It is electrically connected depending on the pressed state.

Here, in the first printed circuit board 2,
Is the second print base of the edge 2a on the connection side with the counterpart.
A conductor pattern (not shown) is provided on the surface facing the plate 3 side.
The terminal portion is exposed. In addition, the second print base
The connection end side of the plate 3 has a bent portion 3a bent at a substantially right angle.
The edge 3b is formed by the first step.
The edge 2a of the lint substrate 2 is opposed substantially parallel to the edge 2a,
Terminal part of conductor pattern not shown is exposed on the facing surface
It is formed.

The above-described anisotropic conductor 5 is clearly shown in FIG.
It has elasticity like conductive rubber and insulating rubber.
Parts 5a and insulating parts 5b made of conductive and insulating materials
Are alternately formed, and the pitch of each is
Exposed on the edges 2a and 3b of the printed circuit boards 2 and 3
Formed in accordance with the pitch of the terminals of multiple conductor patterns
As a result, the corresponding terminal portions of both substrates 2 and 3 are electrically connected to each other.
It is designed to be connected pragmatically.

According to such a configuration, a plurality of conductor patterns
Two printed circuit boards 2 and 3 having
It is arranged on the base member 1, and each of the bent portions 3a
Edges 2a and 3b are opposed in parallel and anisotropic between them
By screwing with the conductor 5 interposed,
Sandwiching the anisotropic conductor 5 and the resulting pressure welding
The terminals of the conductor patterns on both substrates 2 and 3 are
Can be electrically connected.

However, such a printed circuit board has
As the connection structure, the structure described in the former conventional example and FIG.
In the structure described in FIG. 2 and FIG.
When connecting the edges 2a and 3a in a state where they are pressed against each other,
Pressurized conductive rubber connector or anisotropic conductive
Although the body 5 is used, such press-connecting means alone
It is difficult to keep the printed circuit boards 2 and 3 pressed against each other.
In addition, a member for giving a separate pressing force, for example, each substrate
A member or the like that fixes the edge portions 2a and 3a of the two or three
is necessary. In such a conventional example, each substrate 2
In connecting the conductive patterns of No. 3, the anisotropic conductor
It is necessary to reliably perform positioning of 5 and the like .

Further , a pudding as shown in FIGS.
It is also considered to adopt a connection structure of the substrate. This
To briefly explain this, in this example, the base member 1
The first and second screws are screwed in a state perpendicular to each other.
The edges 2a, 3b of the printed circuit boards 2, 3
By forming by bending approximately 45 °, these edge portions 2
a and 3b are in contact with each other in parallel. So
And the surfaces of the opposite edge portions 2a and 3b which are opposed to and contact with each other.
The terminal portion of the conductor pattern is formed to be exposed,
So that the terminals are in contact with each other
Is configured.

Reference numeral 10 denotes an edge of each of the substrates 2 and 3 described above.
The parts 2a and 3b are pressed against each other, and the respective terminal parts are connected to each other.
For the crimp connection, for example,
This is a clip that is used as a pressing means as used in
As a result, the two substrates 2 and 3 are electrically connected.
You.

However, as shown in FIGS.
Even if the structure is adopted, the edge portions 2a,
3a so that each conductor pattern is connected
At the same time as positioning and joining,
It is necessary to use the tip 10, and there is still room for improvement.
The ground is left.

The present invention has been made in view of such circumstances, and the operation for electrically connecting the terminal portions of the conductor patterns on two printed circuit boards combined with each other is extremely simple and easy. It can be done reliably,
To obtain the pressing force of extra press-connecting means and press-contact means
It is an object of the present invention to provide a printed circuit board connection structure that eliminates the need for using components and that can easily disassemble a connection portion.

[0015]

In order to meet such a demand, a connection structure for a printed circuit board according to the present invention is provided by arranging two printed circuit boards on which conductive patterns are printed and wired substantially orthogonally. In electrically connecting the terminal portions of the conductor pattern exposed at the edges of the respective boards, at least one of the edges of the printed board is bent and formed, and the other is formed at the bent portion. a portion parallel to the edge printed circuit board of the provided, further
Edge of at least one of these printed circuit boards
Into the shape of a comb, and at the edge of the comb, the other
A portion parallel to the edge of the lint board is provided, and the terminals of the conductor pattern exposed at the edges parallel to each other of these printed boards are electrically connected by pressure welding .

[0016]

According to the present invention, two printed circuit boards having a plurality of conductor patterns are arranged so that their respective surfaces are substantially orthogonal to each other, and both end edges thereof are opposed to each other in parallel by bent portions provided on at least one of the printed circuit boards. And at least one pre
The edge of the printed circuit board to the edge of the other printed circuit board.
Are formed in a comb-tooth shape with the
By contacting, the terminal portions of the conductor patterns are electrically connected to each other.

[0017]

5 and 6 show a printed circuit board according to the present invention.
FIG. 1 shows an embodiment of the connection structure of FIG.
Also, the same or corresponding parts as those in FIGS.
The same numbers are assigned to the minutes, and the detailed description is omitted. Present invention
According to FIG. 5, the edge 2a of the first printed circuit board 2 is
As is clear from FIG. 6 and FIG.
Is bent so as to be in contact with the edge 3b via the bent portion 3a of the conductor pattern and has an elastic force for each terminal portion of each conductor pattern.
As it will be formed as a contact piece 20 that exhibits a comb-like
Shaped in shape.

Each of the comb-shaped contact pieces 20
Are pressed against the terminals of the conductor pattern formed on the edge 3b on the side of the second printed circuit board 3 by their respective resilience, so that the electrical connection state can be easily and reliably established.
You can really get it.

In particular, in the connection structure according to the present invention,
Is a method in which at least one edge 2a is a plurality of contact pieces 20.
Since it was formed into a comb shape,
The printed circuit boards 2 and 3 are pressed against each other only by force
Therefore, there is no need for a member for providing a pressing force. Ma
In addition, at least one edge portion 2a is formed in a comb shape.
To obtain a reliable connection state at each terminal of the conductor pattern
be able to.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part can be appropriately modified or changed.
You. For example, in the above-described embodiment, the contact piece having elasticity is used.
20 is connected to one of the printed circuit boards.
2 was described, but both or either one
Edge portions 2a, 3a of the printed circuit boards 2, 3
It is free to be molded, and the comb-shaped edge portions 2a, 3
Appropriate modifications may be considered for the shape of b and the like.

Further, in each of the embodiments described above, the connection of the two printed boards 2 and 3 has been described, but it goes without saying that the present invention can be used to connect a plurality of boards.

Further, the printed circuit board connection structure according to the present invention employs a printed circuit board, and is used for various electric appliances and devices which need to be arranged orthogonally and electrically connected. It is also easy to understand that the effect can be achieved.

[0023]

According to the connection structure of a printed circuit board according to the present invention as has been described above devised], the conductive pattern of the printed wiring
In order to electrically connect the terminal portions of the conductor patterns exposed at the edges of each of the two printed circuit boards arranged substantially orthogonally to each other and at least one of the printed circuit boards, with molding by bending the edge portion of the portion to be parallel to the edge portion of the other printed circuit board in the bent portion is provided, further these print
Formed form the comb-like at least one of the edge portions of the substrates
And the end of the other printed circuit board at this comb-shaped edge.
A portion parallel to the edge is provided, and the terminals of the conductor pattern exposed at the mutually parallel edges of the two printed circuit boards are electrically connected to each other by pressure welding , so that the structure is simple. Nevertheless, it has various practically excellent effects listed below.

(1) The electrical connection between the printed boards arranged orthogonally to each other is made by bending at least one of the boards and making at least one end edge in a comb shape.
Shape to secure the terminals of both conductor patterns.
It can be easily and reliably connected electrically by direct pressure contact , without using special members for soldering or pressing force as in the past, as in the past. .

(2) Therefore, the assembly and disassembly of the electrical connection between the two substrates can be performed very easily, and the workability can be greatly improved as compared with the prior art. In particular, comb the edge of at least one printed circuit board.
Molded in a tooth shape, ensuring that the conductor pattern at each terminal
Connection state can be obtained.

(3) Since at least one of the printed circuit boards is bent, it is possible to improve the bending stiffness of the printed circuit board, thereby making it possible to sufficiently use the printed circuit board for receiving a switch. High strength can be secured.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing one row of a connection structure of a printed circuit board considered prior to the present invention.

FIG. 2 is a schematic perspective view showing an anisotropic conductor used as a press-connecting means in FIG.

FIG. 3 is a sectional view of a main part showing another example of a connection structure of a printed circuit board considered prior to the present invention.

FIG. 4 is a schematic perspective view showing a clip used as a means for pressing both printed circuit boards in FIG. 3;

FIG. 5 is a diagram illustrating a connection structure of a printed circuit board according to the present invention;
It is principal part sectional drawing which shows an Example .

FIG. 6 is a plan view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base member, 2 ... 1st printed board, 2a ... edge part, 3 ... 2nd printed board, 3a ... bent part, 3b ... edge part, 4 ... screw, 5 ... anisotropic conductor ( Press-connecting means),
10: clip (pressing means), 20: contact piece (pressing means).

Claims (1)

(57) [Scope of request for utility model registration] 1. A printed circuit board on which a conductor pattern is printed and wired, the surfaces of which are arranged substantially orthogonal to each other, and the terminals of the conductor pattern exposed at the edges of the respective boards are electrically connected to each other. At the time of connection, at least one edge of the printed circuit board is bent and formed, and a portion parallel to the edge of the other printed board is provided at the bent portion, and Comb at least one edge
It is formed into a tooth shape, and the other
A portion parallel to the edge of the printed circuit board , and the terminals of the conductor pattern exposed at the mutually parallel edges of the two printed boards are electrically connected by pressure welding. Connection structure of printed circuit board.