JPH0223028Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention simplifies the connection configuration for external power supply when supplying power to multiple printed circuit boards using a power terminal block, and also simplifies the assembly process. This invention relates to a motherboard that is designed to simplify the process.

[Prior Art] Conventionally, as this type of device, the one shown in FIG. 1 is known. In the figure, 1 is a motherboard, 2 is a printed board connector that is attached to the motherboard 1 and can be electrically connected to a plurality of printed circuit boards (not shown), and 3 is a connector for fixing an external power cable. Fixing screw 4 and pin 5 for
This power terminal block 3 is provided on the motherboard 1 and is configured to supply external power to the connector 2.

In this configuration, when assembling the motherboard, the connector 2 is first attached to the motherboard 1 body in the first step, and then the connector 2 is fixed to the motherboard 1 body using lead cutters and automatic soldering, and in the next step, the power supply is connected. After the terminal block 3 is attached to the motherboard 1, the pins 5 of the power terminal block 3 are fixed to the motherboard 1 by manual soldering, and the assembly of the motherboard 1 is completed through these two steps.

The motherboard 1 assembled in this manner is attached to a unit such as a board basket, and the connector 2 side to which various printed circuit boards are connected is placed inside the unit. And power terminal block 3
is exposed to the outside of the unit, and when power is supplied to the connector from the outside, the terminal-treated power cable is connected to the fixing screw 4 of the power terminal block 3 to supply power.

As mentioned above, conventional motherboards have two sides: the connector side where the printed circuit board is inserted, and the power terminal block side where the power cable is connected, so the assembly process is reduced to two steps. It had to be divided, and one assembly process involved automatic soldering.
Other assembly processes involve manual soldering, which can lead to a lack of reliability. Another drawback is that the fixing screw for the power terminal block is only provided on one side of the motherboard, so when supplying power to a connector with a printed circuit board inserted, the power cable can only be connected from one direction. Ta.

[Summary of the invention] This invention was made to eliminate the above-mentioned drawbacks, and the connector and power terminal block are arranged on the same side of the motherboard, and the fixing screw of the power terminal block is passed through the motherboard. By making it possible to electrically connect this to both sides of the motherboard, it is possible to integrate the assembly process by installing it on the same side and automatically soldering it, which improves the reliability of soldering. The purpose is to propose a motherboard that can receive power supply from both sides of the unit.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to FIG. In this embodiment, the basic components are almost the same as those of the conventional one, but a through hole is provided in the motherboard 1 for passing the fixing screw 4 of the power terminal block 3 attached to the motherboard 1, and The screw foot of the screw 4 is configured to have a length that allows it to pass through the through hole and be exposed on the opposite side of the motherboard 1, and the soldering surfaces of the connector 2 and the power terminal block 3 are installed on the same surface. are doing.

Therefore, when assembling the motherboard with the above configuration, the fixing screws 4 should be removed from the power terminal block 3, or the tips of the screw feet of the fixing screws 4 should not extend beyond the soldering surface of the motherboard 1. After setting the connector 2 and the power supply terminal block 3 to the motherboard 1, automatic soldering is performed to complete the assembly.

Regarding power supply, if the power is connected from the opposite side of the motherboard 1 to the connector side, power can be supplied from both sides of the motherboard by tightening the terminal-treated power cable to the screw that passes through the motherboard 1. can. In this case, by attaching a flat washer or the like between the pin 5 of the power terminal block 3 and the nut, it is possible to connect the power supply without applying stress directly to the motherboard 1 due to tightening the nuts, so the motherboard 1 can be made long. Can withstand use for a period of time.

In addition, in the above embodiment, the screw foot of the fixing screw 4 is long and the power is supplied from the side opposite to the connector 2 and the power terminal block 3. Needless to say, when the fixing is done from the side of the component such as No. 3, the screw foot of the fixing screw 4 may be shortened.

Furthermore, although this embodiment has been described for the purpose of power supply, it is not limited to this.
It is also applicable to terminal blocks used for other purposes.

[Effects of the invention] As described above, according to the invention, in a motherboard equipped with a connector for electrically connecting a plurality of printed circuit boards and a power terminal block,
The connector and the power terminal block are arranged on the same side of the motherboard, and the fixing screw of the power terminal block is a long fixing screw that passes through a hole drilled in the motherboard. Since the motherboard has a configuration that allows power supply to be connected from both sides of the motherboard via fixing screws, the motherboard assembly process can be simplified and the motherboard can be assembled in one process with the soldering surface on the same surface. This has the effect of improving reliability in the quality of the motherboard and allowing power connections to be made from both sides of the motherboard.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a conventional motherboard, and FIG. 2 is a configuration diagram of a motherboard showing an embodiment of the present invention. 1...Motherboard, 2...Connector, 3...
Power terminal block, 4... fixing screw, 5, 6... pin.
In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a motherboard equipped with a connector for electrically connecting a plurality of printed circuit boards and a power terminal block, the connector and the power terminal block are arranged on the same surface of the motherboard, and
The fixing screw of the power terminal block is a long fixing screw passed through a hole drilled in the motherboard,
A motherboard characterized in that a power supply can be connected from both sides of the motherboard through the long fixing screws.