JPH054704Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is designed to perform hot insertion and removal, which involves adding or replacing electronic circuit boards in units of electronic circuit boards while the electronic equipment is powered on. A spare connector is provided separately from the connector to be used, and the hot-swap power supply board, which has a power supply connector that is connected to this during hot-swap, is connected to the hot-swap power supply board via the power supply line. The present invention relates to a power supply board for hot insertion and removal when the electronic circuit board is inserted and removed while being connected to a connector for wire insertion and removal and supplying power.

[Conventional technology]

Generally, you can add an electronic circuit board to the common spring board while the electronic device is powered on, or
The process of replacing electronic circuit boards is called hot swapping.

FIG. 4 is a configuration explanatory diagram showing an example of a conventional electronic device that can perform this hot insertion and removal. 1a, 1b...1
n is a plurality of electronic circuit boards of the same shape divided according to function and constitutes an electronic device, and 2 is a power supply line _L1 to these electronic circuit boards 1a to 1n, and a connection between each of the boards 1a to 1n. This is a common bus board that connects the signal lines _L2 . Each electronic circuit board 1a~
1n and the common bus board 2 are connected to each electronic circuit 1.
This is done by connecting the connection connectors CN2A of a to 1n and each normal connector CN1 of the common bus board 2.

Reference numeral 5 denotes a power supply device, which connects each normal connector CN1 of the common bus board 2 and the connector CN2A for connecting each electronic circuit board 1a to 1n to connect each board 1a to 1n.
1n. Connector CN
Reference numeral 4 denotes a hot-swap power supply connector, which is connected to the power supply device 5 and connects each electronic circuit board 1a to 1a during hot-swap.
1n, it is connected to the hot-swap connector CN3 of the board that is to be hot-swapped (this is referred to as the hot-swap board), and is used to extract the hot-swap board while supplying power.

During normal operation, only connectors CN1 and CN2A are connected to operate electronic circuit boards 1a to 1n, and during insertion and removal, connector CN3 and hot-swap power supply connector are connected.
The electronic circuit board will be inserted and removed by connecting CN4.

Further, FIG. 5 is a configuration diagram showing an example of an electronic device in which a plurality of common bus boards and a plurality of power supply devices are used.

In this example, power is supplied from each power supply device 5, 5A to each electronic circuit board 1a-1n, 1A-1N to operate them. In addition, at the time of hot-swapping, for example, the hot-swapping power supply connector CN4 connected to one power supply device 5 is connected to the hot-swapping board of the electronic circuit boards 1A to 1N operated by the other power supply device 5A. For example, 1A insertion/removal connector CN
3 to insert and remove the board 1A.

[Problem that the invention attempts to solve]

In the conventional example shown in FIG. 4 above, if there is a large voltage drop due to the wiring from the power supply device 5 to the board that performs hot insertion and removal, when the connectors CN3 and CN4 are inserted and removed, or between the connector CN1 of the common bus board 2 and the electronic circuit board. When connector CN2A is inserted or removed, a discharge occurs due to the potential difference, which may inject noise into other electronic circuit boards and cause them to malfunction.
There is a risk of burning out CN3 and CN4.

Also, when both are connected, the connector
Current flows to the common bus board 2 via CN4, CN3, CN2A, and CN1, and an excessive current flows to the cable of connector CN4, which may burn out the cable and connector.

In order to prevent this, the wiring material of the power supply system must be made thicker and its resistance must be reduced.

In addition, in the conventional example shown in FIG. 5, the connector CN4 connected to one power supply device 5 as shown in the figure
When connecting one of the electronic circuits 1A to 1N supplied with power from the other power supply device 5A to, for example, the connector CN3 of the board 1A, a potential difference occurs due to the difference in the output voltage setting of each power supply device 5, 5A, etc. In this case, the same problem as mentioned above occurs.

In order to prevent this, it is necessary to adjust the voltages of one power supply device 5 and the other power supply device 5A to the same value, but this is extremely difficult.

It is also conceivable to prepare one cable for each power supply system, but this increases the number of parts, making it complicated and expensive.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a plurality of electronic circuit boards 1a, 1b, . CN2A
In an electronic device configured with a common bus board 2 having a plurality of normal connectors CN1 of the same shape, which are connected to the electronic circuit boards, supply power to each electronic circuit board, and connect signal lines between the electronic circuit boards,
In order to energize this electronic device and hot-swap some of the electronic circuit boards while the entire device remains in operation, it is necessary to insert and unplug the electronic circuit boards separately from the normal connector CN1 that constantly supplies power to each of the electronic circuit boards 1a to 1n. A hot-swap connector CN3 for supplying power to the electronic circuit boards 1a to 1n is provided on each of the electronic circuit boards 1a to 1n,
Connector CN for connecting each electronic circuit board 1a to 1n
A power supply connector that is the same as 2A and is connected to the vacant normal connector or spare connector CN1 of the common bus board 2 only when inserting or removing another electronic circuit board.
A hot-swap power supply board 3 having CN2B and the electronic circuit board 1a from the hot-swap power supply board 3 during insertion and removal.
The power supply line 4 has a hot-swap power supply connector CN4 that is connected to the hot-swap connector CN3 of the hot-swap board of 1n to supply power.

[Effect]

Among the electronic circuit boards 1a to 1n, the connector CN2A for connecting the hot-swap board that performs hot-swapping is
Free normal connector CN1 on common bus board 2
When connecting to, that is, pushing in, first connect the power supply connector CN2B of the hot-swap power supply board 3 shown in the first figure.
, a vacant spare connector on common bus board 2.
Connect to CN1. At this time, hot insertion/extraction power supply board 3
Since it does not consume power, no noise is generated, and there is no risk of noise being mixed into other electronic circuit boards via the common bus board 2.

Next, the hot-swap power supply connector CN4 is connected to the hot-swap connector CN3 of the hot-swap power supply board. As a result, power is supplied to the hot-swap board, and the power terminal of the connection connector CN2B of the board becomes the same potential as the power terminal of the normal connector CN1 of the common bus board 2.

Next, connect connector CN2 for connecting the hot-swap board
Connect it to the vacant normal connector CN1 of the common bus board 2 where you want to insert it.

Next, remove the hot-swap power supply connector CN4, and finally disconnect the power supply connector CN2B of the hot-swap power supply board 3.
Remove it from the spare connector CN1 to finish the work.

To remove the electronic circuit board while it is in operation, the above procedure can be reversed. Furthermore, the electronic circuit board can be replaced or added in the same manner.

〔Example〕

The present invention will be explained below with reference to the drawings.

Fig. 1 is an explanatory diagram of the configuration of the inventive board, Fig. 2 is an explanatory diagram when performing hot insertion and removal using the inventive board, and Fig. 3 is the inventive board connected to the common bus board. It is an explanatory diagram showing a state.

The board of the present invention has a power supply connector as shown in the first diagram.
a hot-swap power supply board 3 having a CN2B; and a power feed line 4 having a hot-swap power supply connector CN4 that connects the hot-swap power supply board 3 to a hot-swap connector of a hot-swap board to supply power during insertion and removal; It becomes more.

In Fig. 2, a plurality of electronic circuit boards 1a, 1b, etc., which constitute an electronic device and are divided according to function, are usually unified to the same size, and a connector CN2A for connecting each electronic circuit board 1a, 1b, etc.
The same ones are used, and the power pins are placed at the same pin numbers.

In addition, the power supply connector CN of the hot-swap power supply board 3
2B only needs to be connected to the power supply, so if only the power pin numbers of each normal connector CN1 on the common bus board 2 are unified, connect it to any available normal connector CN1 or spare connector.
Can be connected to CN1.

Power supply connector CN2B of hot-swap power supply board 3
1 is shown having the same shape as each of the electronic circuit boards 1a to 1n, but any shape may be used as long as it is the same as the connecting connector CN2 of each of the electronic circuit boards 1a to 1n. Hot-swap power supply connector from power supply connector CN2B of hot-swap power supply board 3
Connection to CN4 is made through a power supply line 4 consisting of a ground line (grounding line) and power supply lines for each voltage.

In the above configuration, the procedure for hot insertion and removal will be explained.

Among the electronic circuit boards 1a to 1n, a connector for connecting a hot-swap board for hot-swapping, for example, 1n.
When connecting CN2A to the vacant normal connector CN1 of the common bus board 2, that is, when pushing it in, first connect the power supply connector CN2B of the hot-swap power supply board 3 shown in the first figure to the vacant spare connector CN1 of the common bus board 2. Connect to connector CN1. At this time, since the hot-swap power supply board 3 does not consume power, no noise is generated, and there is no risk of noise being mixed into the other electronic circuit boards 1a to 1o _-1 via the common bus board 2.

Next, the hot-swap power supply connector CN4 is connected to the hot-swap connector CN3 of the hot-swap power supply board 1n. This supplies power to the hot-swap power supply board 1n.
The power supply terminal of the connector CN2A for connecting the board 1n has the same potential as the power supply terminal of the normal connector CN1 of the common bus board 2.

Next, the connector for connecting the live insertion/extraction board 1n
Connect CN2A to the vacant normal connector CN1 on the common bus board 2 to which you want to insert. FIG. 3 shows this state.

Next, remove the hot-swap power supply connector CN4, and finally disconnect the power supply connector CN2B of the hot-swap power supply board 3.
Remove it from the spare connector CN1 to finish the work.

When removing an electronic circuit board, for example 1a, which is in operation, the above procedure may be reversed. Furthermore, the electronic circuit board can be replaced or added in the same manner.

[Effect of idea]

As is clear from the above description, according to the present invention, a plurality of electronic circuit boards 1a, 1b, .
It has a plurality of normal connectors CN1 of the same shape that are connected to the connection connectors CN2 of these electronic circuit boards 1a to 1n, supply power to each electronic circuit board, and connect signal lines between the electronic circuit boards. In an electronic device configured with a common bus board 2, each of the electronic circuit boards 1a to 1n is used to energize the electronic device and hot-swap some of the electronic circuit boards while the entire device remains in operation. In addition to the normal connector CN1 that always supplies power to the electronic circuit boards 1a to 1n, there is a hot insertion/removal connector CN3 for supplying power to the electronic circuit boards 1a to 1n only when the electronic circuit boards 1a to 1n are inserted or removed.
, and is the same as the connector CN2A for connecting each electronic circuit board 1a to 1n, and is connected to the vacant normal connector or spare connector CN1 of the common bus board 2,
Hot-swap power supply board 3 having a power supply connector CN2B that is connected only when inserting or removing another electronic circuit board
and a power supply line having a hot-swap power supply connector CN4 that is connected to the hot-swap power supply connector CN3 of the hot-swap board of the electronic circuit boards 1a to 1n to supply power from the hot-swap power supply board 3 during insertion and removal. 4, the power can be taken directly from the common bus board 2 and supplied to the hot-swap board, so the hot-swap connector CN3 and the hot-swap power supply connector CN
4 and between the normal connector CN1 of the common bus board 2 and the connector CN2 for connecting the electronic circuit board, especially between the power supply device 5 and the common bus board 2.
A large current flows between them, and the voltage drop is large, but it is not affected by this, and the noise caused by discharge and the power supply line (cable) 4, connector due to overcurrent.
Malfunctions due to burnout of CN1, CN2A, CN3, CN4, etc. and noise intrusion can be prevented.

It can also be applied to electronic devices that use multiple common bus boards and multiple power supplies. In addition, if there are multiple electronic devices in one place, only one board of the present invention is required, and since the board of the present invention itself does not consume power, hot-swapping boards can be inserted and removed from the common bus board 2. can be done freely.

Furthermore, the connectors of circuit boards used in electronic devices
Since power is supplied from the connector CN1 of the common bus board 2 through the connector CN2A, which is the same as the connector CN1, this provides great industrial benefits such as no need to provide a dedicated connector.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the configuration of the inventive board, Fig. 2 is an explanatory diagram when performing hot insertion and removal using the inventive board, and Fig. 3 is the inventive board connected to the common bus board. Fig. 4 is an explanatory diagram showing the configuration of an example of a conventional electronic device that can perform hot insertion and removal, and Fig. 5 is an example of an electronic device using a plurality of common bus boards and power supplies. FIG. 1a to 1n...Electronic circuit board, 2...Common bus board, 3...Hot insertion/removal power supply board, 4...Power supply line,
5...Power supply, CN1...Normal connector, spare connector, CN2A...Connector for connection, CN2
B...Power supply connector, CN3...Hot insertion/extraction connector, CN4...Hot insertion/extraction power supply connector.

Claims (1)

[Scope of utility model registration request] A plurality of electronic circuit boards 1a, 1b...1n having the same shape divided by function and forming an electronic device, and connectors for connecting these electronic circuit boards 1a to 1n.
In an electronic device configured with a common bus board 2 having a plurality of normal connectors CN1 of the same shape connected to CN2A, supplying power to each electronic circuit board, and connecting signal lines between each electronic circuit board. In order to energize this electronic device and hot-swap some of the electronic circuit boards while the entire device remains in operation, the electronic circuit boards 1a to 1n are inserted and unplugged separately from the normal connector CN1 that is constantly supplied with power. A hot-swap connector CN3 for supplying power to the electronic circuit boards 1a to 1n is provided on each of the electronic circuit boards 1a to 1n, and is the same as the connector CN2A for connecting each of the electronic circuit boards 1a to 1n, and is connected to the common bus board 2. a hot-swap power supply board 3 having a power supply connector CN2B that is connected to a vacant normal connector or spare connector CN1 only when inserting or removing another electronic circuit board;
A power supply line 4 having a hot-swap power supply connector CN4 that is connected to the hot-swap connector CN3 of the hot-swap board of the electronic circuit boards 1a to 1n to supply power from the live-swap power supply board 3 during insertion and removal; A power supply board for hot insertion and removal.