JPH07226263A - Connecting apparatus - Google Patents

Abstract

PURPOSE:To manufacture connecting apparatuses at low cost without using lead wires by electrically connecting a connection pattern on a circuit substrate and contact terminals of a connector directly with each other by soldering and at the same time fixing them, and fixing the circuit substrate in a case. CONSTITUTION:A connection pattern 5a with the same pitch as that of connection terminals 7 of a connector and necessary to transmit signals is formed in both sides of a circuit substrate 5 and thus the connector 2 and the substrate 5 are kept in a prescribed position relation. The patterns 5a, 5a are directly connected with the terminals 7, 7 by soldering parts 8. Consequently, the fixing of the substrate 5 from both sides and electric connection of the terminals 7 and the substrate 5 are carried out at one time and the substrate 5 and the connector 2 are put in an housing case 1 and the connector 2 is fixed in the case 1. As a result, the substrate 5 is set and fixed in the inside of the case 1 through the soldering parts 8 and fixing structure and lead wires for the substrate 5 are made unnecessary and the apparatus is manufactured at low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device provided at at least one end of a connection cable for communication connection between a personal computer and an external device via the connection cable.

[0002]

2. Description of the Related Art Generally, a personal computer and a UAR
In an external device that can communicate by the T method, when the signal voltage of the external device is a 5V system, the signal voltage standard of the terminal (RS-232) of the personal computer is ± 12V.
It is necessary to convert the level of the communication signal in order to achieve consistency with the front and rear voltages. Therefore, some level converting means must be interposed between the personal computer and the above-mentioned external device.

Conventionally, the above-mentioned level converting circuit board is provided inside the outer case of the connector, and the connection terminal of the connector projects into the outer case to connect the connection terminal and the circuit board. The lead wire was arranged between the connection pattern.

[0004]

It is troublesome to solder the above-mentioned connection terminals and the connection pattern on the circuit board by using both ends of the lead wire, and the circuit board is fixed inside the outer case. At that time, there is a problem that a structure of an outer case for fixing the structure is required, which increases cost.

In view of the above problems, an object of the present invention is to provide a connecting device which can be manufactured at low cost without using a lead wire.

[0006]

In order to achieve the above object, the present invention provides a circuit including a connector provided with a conductive connection terminal and a connection pattern for electrically connecting to the connection terminal. A board and an outer case of the connector are provided, the connector is fixed to a part of the case, the connection terminals of the connector project into the case, and the circuit board is arranged in the case. In the connection device, the connection pattern on the circuit board and the connection terminal of the connector are directly connected by soldering, and the connection electrically connects the connection terminal of the connector and the circuit board. And the circuit board is fixed to the connector, and the connector is fixed to the case, so that the circuit board is fixed inside the case. Was Unishi.

[0007]

According to the above structure, since the connection pattern on the circuit board and the connection terminal of the connector are directly connected by soldering, the lead wire is not necessary, and the connection by the soldering described above is performed. By fixing the connector to the case through the portion, the circuit board is fixed inside the outer case, and therefore, a special case structure for fixing the circuit board is unnecessary, and the lead wire is used. It can be manufactured at low cost without wiring.

Further, since a special case structure for fixing the substrate is not required as described above, a commercially available case can be used.

[0009]

1 is a diagram showing the internal structure of a connecting device according to an embodiment of the present invention. In this figure, the outer case 1
A connector 2 is fixed to a part of the case 1, a part of the connector 2 is provided outside the case 1, and a connection terminal 7 of the connector 2 is provided inside the case 1.
Although various types of connectors 2 are conceivable, when the RS-232 terminal of the computer and an external device having a different signal level are electrically connected to each other, the connector for the RS-232 terminal can be converted so that the signal level can be converted. The D-Sub connector is most suitable, and according to the present invention, the D-Sub connector 2 is used.
Is used.

A circuit board 5 is arranged inside the case 1, and each of the connection patterns 5a is formed on the board 5.
Are formed. The connection pattern 5a may be provided for each of the connection terminals 7 in FIG.
According to the present invention, only the number necessary for signal transmission is sufficient, and it is not necessary to provide each connection terminal 7 one by one. Therefore, the formation of the connection pattern 5a can be reduced.

Reference numeral 3 is a mounting screw for attaching the connector 2 to a personal computer when the connector 2 is connected to the same.
Reference numeral 4 is a screw hole for stacking and fixing the divided cases. Reference numeral 6 is a connection cable, and the code dispersed at the tip thereof is connected to a pattern (not shown) of the circuit board 5.

FIG. 2 shows a connection terminal 7 of the connector 2 in FIG.
FIG. 3 is a view of the connection relationship between the circuit board 5 and the circuit board 5 as viewed from the right side in FIG. 1. As shown in FIG. 2, the connection terminals 7 are provided on the front surface side and the back surface side of the circuit board 5, respectively. The respective connection terminals 7 are arranged on the front surface side of the circuit board 5 in the first row as shown in FIG. 1 and on the back surface side of the board 5 in the second arrangement parallel to the first arrangement direction. Are arranged in the direction.

Connection patterns 5a necessary for signal transmission are provided in advance on both surfaces of the circuit board 5, and each pattern 5a has substantially the same pitch as the pitch of the connection terminals 7 for connection with the pattern 5a. Is formed by. This is for maintaining the positional relationship between the connector 2 and the circuit board 5 and for preventing an error in the arrangement of the board 5 with respect to the connector 2. In the present invention, the same pitch as that of the connection terminals 7 for connection described above is used. It is more preferable to form the connection pattern 5a.

Then, as shown in FIG. 2, the circuit board 5 is arranged between the connection terminals 7 on the front surface side and the connection terminals 7 on the rear surface side of the circuit board 5, and the connection patterns 5a are formed on the connection terminals. 7 to be directly connected by soldering (reference numeral 8 in FIG. 2), and by this connection, the circuit board 5 is sandwiched so that the connection terminal 7 and the circuit board 5 are electrically connected and fixed at one time. Became.

The circuit board 5 and the connector 2 thus fixed are housed in the outer case 1 shown in FIG. 1, and the connector 2 is fixed to a part of the outer case 1 so that the above-mentioned soldering can be performed. The circuit board 5 is fixed to the inside of the outer case 1 through the portion 8, and the connection device according to the present invention is completed by this fixing. Further, when the circuit board 5 is fixedly mounted on the outer case 1 in FIG. 1, a space is formed on the front surface side and the back surface side of the board 5, so that the components can be mounted on both sides and a complicated circuit can be incorporated. Is also possible.

According to the above-described embodiments, the connection terminals 7 of the connector 2 are provided along the first and second arrangement directions, but the connection pattern 5a required for signal transmission is in the circuit. This is because it is formed on both sides of the substrate 5, and the patterns 5a on both sides of the substrate 5 and the first pattern
And the connection terminals of the second row are directly connected by soldering, the board 5 is sandwiched and the fixation of the board is further strengthened. Therefore, according to the present invention, the first and second
It is more preferable to provide them in two rows such as the arrangement of.

[0017]

As described above, according to the present invention, when the circuit board for converting the level of the electric signal is housed in the outer case,
Since the connection pattern on the circuit board and the connection terminal of the connector are directly connected by soldering, it is possible to perform electrical connection and fixing at the same time, and further, it is possible to connect the connector through the connection portion by soldering described above. Since the circuit board is fixed inside the case by fixing it to the external case, the structure of the case for fixing the board is not required, so that there is an effect that the connection device can be manufactured inexpensively without using lead wires. To be

Since the structure of the case for fixing the above-mentioned substrate is not necessary, a commercially available exterior case can be used. In addition, the connector of the present invention,
Since the D-Sub connector for the RS-232 terminal is used, the signal level can be converted when the RS-232 terminal of the computer and an external device having a different signal level are electrically connected.

Further, the connection pattern of the circuit board is shown in FIG.
Since it is not necessary to provide each of the connecting terminals 7 in each, but only the number which is indispensable for signal transmission is provided, it is possible to reduce the formation of the connection pattern and to shorten the soldering time with the connecting terminals 7. You can Further, since the above-mentioned connection pattern is formed at a pitch substantially the same as the pitch of the connection terminals, it is possible to maintain an accurate positional relationship with respect to the connector without misaligning the board.

Furthermore, since the connection terminals of the connector are provided in plural along the first and second arrangement directions, the connection terminals of the first row and the connection terminals of the second row are connected. By disposing a circuit board in between and directly connecting the connection patterns on both surfaces of the board and the connection terminals of the first and second rows by using solder, the boards are sandwiched, The fixation of can be further strengthened.

[Brief description of drawings]

FIG. 1 is a diagram showing an internal structure of a connection device according to the present invention.

2 is a diagram showing the connection relationship between the connection terminals 7 of the connector 2 in FIG. 1 and the circuit board 5 as viewed from the right side in FIG.

[Explanation of reference numerals] 1 outer case, 2 connector, 5 circuit board 5a connection pattern, 7 connection terminal, 8 solder

Claims (4)

[Claims] 1. A connector provided with a connection terminal having electrical conductivity, a circuit board including a connection pattern for electrically connecting with the connection terminal, and an outer case of the connector, comprising: In a connection device in which the connector is fixed to a part, the connection terminal of the connector projects into the case, and the circuit board is arranged inside the case, a connection pattern on the circuit board is provided. And the connection terminal of the connector is directly connected by soldering, by this connection the connection terminal of the connector and the circuit board are electrically connected and the circuit board is fixed to the connector, A connection device characterized in that the circuit board is fixed inside the case by fixing the connector to the case. 2. The connection terminal of the connector comprises a plurality of connection terminals arranged in a first row and also arranged in a second row parallel to the arrangement direction, the front surface and the back surface of the circuit board. Each of which is provided with a connection pattern in advance, and the circuit board is arranged between the connection terminals of the first row and the connection terminals of the second row to connect the connection pattern and the connection. The terminal is directly connected by soldering, and by this connection, the circuit board is sandwiched between the connection terminals on the front surface side and the back surface side of the circuit board. The connection device described. 3. The connection patterns provided on both surfaces of the circuit board are formed at substantially the same pitch as the pitch of the connection terminals connected to the connection pattern. The connection device according to claim 2. 4. The connector according to claim 1, wherein the connector is a D-Sub connector.
The connection device described.