JPS5824394Y2 - Printed board connection device with live wire extraction mechanism - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a connection device between a printed board and a connector that enables hot insertion and removal for maintenance and inspection of the printed board.

Generally, when inserting or pulling out a printed board from a connector for maintenance and inspection of the printed board,
When a signal line and a power supply line on a printed board are connected or disconnected at the same time, especially when a common path line is used, noise is generated in this path line, which adversely affects the circuit operations of other printed boards.

For this reason, conventionally, it has not been possible to insert or remove a printed board from a connector while signals and power are being supplied, that is, hot insertion or removal.

This may impair efficient maintenance and management of the system.

By the way, noise is generated due to the insertion and removal of the printed board from the connector, especially because power is not supplied to the printed board at the same time as signals.

Therefore, the generation of the noise can be prevented by avoiding turning on or cutting off the signal and power at the same time.

For example, when pulling out a printed board from a connector, the signal may be cut off in the first step, and then the power may be cut off in the second step.

Furthermore, when inserting a printed board into a connector, power may be supplied first, and then signals may be supplied.

This idea was made based on the above circumstances, and when inserting or removing a printed circuit board from a connector, it avoids turning on or cutting off signals and power at the same time, thereby preventing the generation of noise and making hot insertion and removal possible. The purpose is to provide a connection device between a printed board and a connector.

An embodiment of this invention will be described below with reference to the drawings.

1 to 3 are a front view of the printed board and sectional views taken along lines A-A and B-B, and FIGS. 4 and 5 are a front view and a sectional view taken along line C-C of the connector.

1 to 3, 1 is a printed board on which a control circuit, etc. (not shown) is formed, 2 is a plurality of power supply pattern electrodes arranged in parallel at the end of the printed board 1, and 3 is also the printed board 1. A plurality of signal pattern electrodes are arranged in parallel at the end of the

4 a and 4 b are protrusions interposed between the power supply and signal pattern electrodes 2 and 3 and protruding from the printed board 1; It is formed higher than the signal pattern electrodes 2 and 3, and the upper and lower parts are chamfered.

The printed board 1 having the above structure is inserted into the connector 5 shown in FIGS. 4 and 5.

In FIGS. 4 and 5, 5 is a connector, and inside this connector 5 are the power and signal pattern electrodes 2,
A plurality of power supply and signal terminal portions 6 and 7 corresponding to No. 3 are arranged in parallel.

A terminal drive rod 8 made of an insulating member is fixed to the upper end of each of the signal terminal portions 7 so as to span the connector 5 in the longitudinal direction.

As described above, since the terminal drive rod 8 is provided in the signal terminal part 7 in the connector 5, for example, the printed board 1 can be connected to the connector 5.
When inserting the terminal into the terminal drive rod 8, the protrusions 4a and 4b first
Since the connector 5 is pushed in the width direction of the connector 5, that is, as shown by the dotted line in FIG. 5, the signal terminal portion 7 becomes wider and does not come into contact with the signal pattern electrode 3.

On the other hand, the power source pattern electrode 2 is inserted into the power source terminal portion 6 and brought into contact therewith, as in the prior art.

Therefore, when inserting the printed board 1, the power is first turned on.

When the printed board 1 is further inserted, the protrusion 4
Since a and 4b are shorter than the length of the signal pattern electrode 3, they come off the terminal drive rod 8, and the signal terminal part 7 becomes like the thin dotted line shown in FIG. will be done.

Therefore, after the power is turned on, the signal is turned on after a predetermined time,
Noise generation is suppressed.

Note that when the printed board 1 is pulled out, the signal is first cut off, and then the power supply is cut off, contrary to the above.

FIG. 6A is a time chart showing the action when inserting the printed board 1 into the connector 5, and the straight line A in the figure connects the power pattern electrode 2 of the printed board 1 and the power terminal part 6 of the connector 5. indicates the close-talk state.

That is, the power supply becomes connected at the same time as the printed board 1 is inserted into the connector 5.

On the other hand, the straight line at the bottom of the figure indicates a state in which the signal pattern electrode 3 and the signal terminal portion 7 are in close contact.

That is, the signal becomes connected after a predetermined time elapses after the start of the printed board 1 insertion work, and is connected after the power supply becomes connected.

FIG. 6B is a time chart showing the action when the printed board 1 is pulled out from the connector 5. Similarly to FIG. 6A, the straight line A in the figure indicates the power supply, and the straight line at the mouth indicates the signal close state. , the signal is always turned off when the power is connected.

As described above, according to the present invention, when the printed board 1 is inserted into the connector 5, the terminal driving member 8 provided on the signal terminal portion 7 of the connector 5 and the projections 4a and 4b provided on the printed board 1 are used. , the signal pattern electrode 3 and the signal terminal part 7 are connected after a predetermined time delay after the power supply pattern electrode 2 is connected to the power supply terminal part 6, and when the printed circuit board 1 is pulled out from the connector 5, the signal pattern electrode 3 and the signal terminal part 7 are The pattern electrode 3 for power supply and the terminal part 7 for signal are always separated from each other a predetermined time before the pattern electrode 2 for power supply and the terminal part 6 for power supply are separated, that is, the signal is connected or separated while the power supply is connected. Therefore, the power supply and signal will not be connected or disconnected at the same time, and therefore, even if the printed board 1 and the connector 5 are inserted or removed during maintenance and inspection of the printed board 1, no noise will be generated and there will be no effect on the system, improving efficiency. This has the effect of allowing you to work more efficiently.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention.
Figure 1 is a front view of the printed board, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, Figure 3 is a cross-sectional view taken along line B-B in Figure 1, Figure 4 is a cross-sectional view of the connector, and Figure 5 is a cross-sectional view taken along line B-B in Figure 1. The drawings are a sectional view taken along the line CC in FIG. 4, FIG. 6A is a time chart when inserting the printed board into the connector, and FIG. 6B is a time chart when pulling out the printed board from the connector. 1... Printed board, 2... Pattern electrode for power supply, 3... Pattern electrode for signal, 4 a
, 4 b... Protrusion, 5... Connector, 6... Power terminal part, 7... Signal terminal part, 8... ...Terminal drive rod.

Claims (1)

[Scope of utility model registration request] A printed board 1 has a plurality of power pattern electrodes 2 and signal pattern electrodes 3 arranged in parallel at one end, and electrical signals are sent and received to the power pattern electrodes 2 and signal pattern electrodes 3 of the printed board 1. Power supply terminal section 6 and signal terminal section 7
In the connection device between a printed board and a connector, which includes a plurality of connectors 5 arranged in parallel, a protrusion higher than each electrode is provided between the power pattern electrode 2 and the signal pattern electrode 3 of the printed board 1. 4 a and 4 b, and a terminal drive member 8 made of an insulating material is provided across all signal terminal portions 7 of the connector 5.