JPH09237951A - Connecting structure of printed board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed board connector for interconnecting the circuits on a plurality of printed boards, resistant to impact, such as falling and vibration, since its connecting terminals remain flexible even after the printed boards are fit together and soldered. SOLUTION: A first printed board 11 is provided with a slit 13 containing notches 13a, 13b, 13c into which a second printed board 12 is to be inserted, and with metal wires 15a, 15b, 15c bridging the slit 13. The circuits on the first printed board, are connected with one another through the metal wires 15a, 15b, 15c. A second printed board 12 is provided with slits 14a, 14b, 14c formed on its side that are to be fit onto the metal wires 15a, 15b, 15c. This makes it possible to electrically interconnect the electric circuits on the first and second printed boards 11, 12.

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 connector for electrically connecting two printed circuit boards used in electronic equipment or the like, and is characterized by a connection structure.

[0002]

2. Description of the Related Art Conventionally, an electric circuit of an electronic device is divided into a plurality of printed circuit boards, and then the divided printed circuit boards are electrically connected to each other due to downsizing of a set, restrictions on a place for mounting the printed circuit board, and the like. Often you have to connect to. For this reason, there is an increasing demand for the development of low cost, high quality and high productivity printed circuit board connectors.

A conventional printed circuit board connector will be described below with reference to FIGS. 4 and 5. FIG. 4 is a perspective view showing a state before connection of a conventional representative printed circuit board connection structure, and FIG. 5 is a side view of the same printed circuit board connection structure in a connected state. In FIG. 4, 11 is a first printed board to be connected to each other, and 12 is a second printed board. 43 is a slit provided in the first printed board 11 for inserting the second printed board 12. Further, 44a, 44b and 44c are terminal foils for connecting the circuit formed on the second printed board 12, and
Of the printed circuit board 11 and the terminal foils 45a, 45b, 45c for circuit connection, which are transparently shown, and are electrically connected by dip soldering. Numerals 47a and 47b are notches which are brought into contact with the first printed circuit board 11 when the second printed circuit board is inserted into the slit 43. FIG. 5 shows a side view of a state in which these two printed circuit boards are fitted through the slit 43.

A connection assembly will be described in the printed circuit board connection structure configured as described above. First slit 43
The notches 47a and 47b are formed on the first printed circuit board 11
The second printed circuit board 12 is inserted until it comes into contact with. Then, the terminal foil 45 formed on the first printed board 11 is formed.
a, 45b, 45c and the terminal foils 44a, 44b, 44c formed on the second printed circuit board 12 are about 9 each other.
They are close to each other at an angle of 0 °. Next, when the first printed board 11 is dip-soldered in this state, the terminal foils 44a, 44b, 44c and the terminal foils 45a, 45b, 4
5c is electrically connected to each other via the solder 46 to connect the electric circuit formed on the first printed board and the electric circuit formed on the second printed board.

[0005]

However, in the conventional structure as described above, when the terminal foils of the printed circuit boards are inclined when they are soldered, a gap is formed between the terminal foils to be connected. In some cases, soldering did not work well. In addition, since the connected terminal foil remains fixed by soldering, the flexibility is poor, and the printed circuit board is incorporated when the printed circuit board is incorporated into an electronic device or the like, or after being assembled into a finished product. There was a problem that the foil floats on the connection terminal portion when a shock is generated.

[0006]

In order to solve the above problems, in the printed circuit board connection structure of the present invention, a first slit into which the end of the second printed circuit board can be inserted is formed in the first printed circuit board. Then, both ends of the metal wire are fixed to the first printed circuit board so as to bridge the first slit while at least one of them is electrically connected to the circuit terminal foil formed on the first printed circuit board. Then, a second slit that engages with the metal wire is formed at an end portion of the second printed circuit board that is inserted into the first slit, and the end portion of the second printed circuit board is provided with the first slit. And a circuit terminal foil formed around the second slit and the metal wire are soldered to each other while the second slit is engaged with the metal wire. This is the configuration.

According to the present invention, even if the terminal foil of the printed circuit board is inclined when it is soldered, no gap can be formed between the terminal foils to be connected, so that the soldering is improved and soldered. Since the soldered portion is made flexible even afterwards, it is possible to provide a printed circuit board connector that is resistant to shock such as vibration.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION According to the first aspect of the present invention, a first slit into which an end portion of a second printed board can be inserted is formed in a first printed board, and the first slit is formed. The two ends of the metal wire are fixed to the first printed circuit board with at least one of them being electrically connected to the circuit terminal foil formed on the first printed circuit board so as to bridge the second printed circuit board. A second slit that engages with the metal wire is formed at an end of the board that is inserted into the first slit, and the end of the second printed board is inserted into the first slit. A circuit terminal foil formed around the second slit and the metal wire are solder-connected in a state where the second slit is engaged with the metal wire. With the circuit on the first printed circuit board Since the circuit of the second printed board is connected via a plurality of metal wires, impact generated on the printed circuit board is absorbed by a plurality of metal wires, shock at the soldered portions can be reduced. As a result, the floating of the foil and the occurrence of solder cracks at the soldering part are eliminated, and at the same time, even if the first printed circuit board and the second printed circuit board are tilted, a gap cannot be formed in the soldering part, so that soldering It has the effect of improving the sex.

Next, the invention according to claim 2 is characterized in that a notch is formed in a portion of the first slit where the metal wire is bridged, and the slit width is made wider than other portions. In addition, it has an effect that soldering between the terminal foil of the second printed circuit board and the metal wire is improved.

Next, the invention according to claim 3 is characterized in that the metal wire is inserted from the surface side opposite to the solder surface side, even if an impact is applied to the second printed circuit board. Since there is a slight gap between the metal wire and the insertion hole on the surface of the printed circuit board 11 opposite to the solder surface, the metal wire is deformed by this clearance, and the shock is absorbed.
This has the effect of reducing the degree of impact applied to the soldering portion on the opposite side.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.
1 provided on the first printed circuit board 11 in FIG.
Reference numeral 3 is a slit having a width substantially equal to the thickness of the second printed board 12 for inserting the second printed board 12, and a metal wire 15 that bridges the slit 13.
a, 15b and 15c are holes 16a and 16d or 16b and 16 formed on the printed circuit board from the dip surface.
It is mounted through e or 16c and 16f and is bent on the opposite side. Further, on the first printed circuit board 11, a terminal foil 17a for connecting the second printed circuit board,
In order to improve soldering between the metal wires 17b, 17c and the metal wires 15a, 15b, 15c, the metal wires 15a, 15b, 15c
Notches 13a, 13b, 13c continuous with the slit 13 are provided so as to be located in the lower part of the.

On the second printed circuit board 12, the first
Metal wires 15a, 15 provided on the printed circuit board 11 of
slits 14a, 14b, so as to engage with b, 15c,
14c is provided around which terminal foils 17a, 17b, 17c to be connected to the circuit of the first printed circuit board are provided.
Is provided. Further, as shown in FIG. 2, the metal wires 15a, 15 on the dip surface side of the first printed circuit board 11 are formed.
The terminal foil 18 is formed around the insertion holes of b and 15c, respectively.
a, 18b, 18c, 18d, 18e, 18f are provided, some of which are the second printed circuit board 1
2 is connected to the circuit on the first printed circuit board 11 to be connected to the circuit on 2.

The operation of the printed circuit board connecting structure configured as described above will be described with reference to FIGS. 1, 2 and 3. As shown in FIG. 1, the second printed circuit board 12 is connected to the metal wires 15a and 15b formed on the first printed circuit board 11,
The slits 14a, 14b, 14c are engaged with the groove 15c in a substantially vertical direction (direction of arrow A),
Notch portions 12a, 12 of the second printed circuit board 12
Insert until b comes into contact with the first printed circuit board 11. Then, when the first printed circuit board 11 is dip-soldered, the notch 13 formed on the printed circuit board
Therefore, the terminal foils 17a, 17b, 17c of the second printed circuit board 12 are formed of metal wires 15a, 13b, 13c, respectively.
At the same time as being surely soldered to a, 15b, 15c,
As shown in FIG. 2, the metal wires 15a, 15b, 15c are also soldered to the terminal foils 18a, 18b, 18c, 18d, 18e, 18f.

FIG. 3 is a side view showing a state in which the terminal foil 17a of the second printed board 12 is fitted and soldered to the metal wire 15a. The metal wire 15a is soldered with the circuit terminal foils 18a and 18d on the first printed circuit board 11 for circuit connection, and the circuit of the second printed circuit board 12 is approximately at the center of the metal wire 15a. The terminal foil 17a is engaged and soldered. The other metal wires 15b and 15c are attached in the same manner as above. In this way, the circuits formed on the first printed board 11 and the second printed board 12 are electrically connected via the metal wires 15a, 15b, 15c.

In the above embodiment, the metal wires 15a, 15b, 15c are inserted from the dip surface side. However, the metal wires 15a, 15b and 15c are inserted from the opposite direction to the dip surface side, and the dip surface side is soldered. Slits 14a, 14b, 14
The terminal foils 17a, 17b, 17c may be soldered by engaging c with the metal wires 15a, 15b, 15c. According to this structure, even if an impact is applied to the second printed circuit board 12, there is a slight gap between the metal wires 15a, 15b, 15c and the insertion hole on the surface opposite to the dip surface. The metal wires 15a, 15b, 15
The deformation of c to absorb the impact, and the impact to the soldered portion on the dip surface side is further reduced.

[0016]

As described above, according to the present invention, even if an impact is generated on the second printed circuit board, the metal wire mounted on the first printed circuit board serves as a cushioning material and cracks or the like are generated in the soldered portion. A printed circuit board connection with good solderability can be realized. In addition, a slit formed in the first printed circuit board for inserting the second printed circuit board is provided with a notch portion to improve soldering, thereby providing a metal wire mounted on the first printed circuit board. The terminal foil of the circuit of the second printed board can be reliably soldered.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state before connection of a printed circuit board connection structure according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of an essential part in the same embodiment.

FIG. 3 is a connection side view of the printed circuit board connection structure according to the embodiment.

FIG. 4 is a perspective view showing a state before connection of a conventional printed circuit board connection structure.

FIG. 5 is a connection side view of the printed circuit board connection structure.

[Explanation of symbols]

11 1st printed circuit board 12 2nd printed circuit board 12a, 12b Notch 13 Slit 13a, 13b, 13c Notch 14a, 14b, 14c Slit 15a, 15b, 15c Metal wire 16a, 16b, 16c, 16d, 16e, 16f Holes 17a, 17b, 17c Circuit terminal foils 18a, 18b, 18c, 18d, 18e, 18f Circuit terminal foils

Claims (3)

[Claims] 1. A first slit, into which an end portion of a second printed board can be inserted, is formed in the first printed board.
The two ends of the metal wire are fixed to the first printed circuit board in a state where at least one of them is electrically connected to the circuit terminal foil formed on the first printed circuit board so as to bridge the slit of A second slit that engages with the metal wire is formed at an end of the printed circuit board that is inserted into the first slit, and the end of the second printed circuit board is inserted into the first slit. At the same time, a connection structure for a printed circuit board, in which a circuit terminal foil formed around the second slit and the metal wire are solder-connected in a state where the second slit is engaged with the metal wire. 2. The printed circuit board connection according to claim 1, wherein a notch is formed in a portion of the first slit where the metal wire is bridged, and the slit width is wider than other portions. Construction. 3. The printed circuit board according to claim 1, wherein the metal wire is inserted into the first printed circuit board from the surface side opposite to the solder surface side and is attached to the first printed circuit board. Connection structure.