JPS5944931A - Printed board mounting system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a system f1χ in which all electronic devices are mounted, and more particularly to a printed board mounting system.

(2) Conventional technology and problems Conventionally, printed boards (or packaged printed boards) on which all electronic equipment is mounted have electrical, ground, and signal wires at the connector that mates with the connector on the bodywork F/L side. The wiring patterns extended from the end of the printed board to -Fu, and when the printed board was inserted or removed, all of the wiring patterns came into contact with the connector side at the same time or were cut off. As a result, when inserting or removing a printed board, the power supply to the printed board is not stable, causing line 16 to be interrupted, causing noise to be heard on the pass line on the backboard, and having a negative impact on other printed board circuits. There were drawbacks.

(3) Purpose of the Invention The present invention has been made to solve the above-mentioned conventional problems (on-line system due to maintenance or erroneous operation of the electronic equipment section 11, etc.).
' or during operation) insertion and removal of the printed circuit board caused by low rotation &'1 E', shadow lI'1. The printed circuit board mounting method is designed to prevent system failures to a minimum by suppressing the occurrence of system failures.

(4) Structure of the Invention The present invention has the following features: In order to achieve its own purpose, the connecting part of the printed circuit board on which electronic equipment is mounted is made shorter than the wiring pattern for all power supplies. On the bank board side, there is a gate circuit for opening and closing that supplies signals from the signal line to the printed board.
−? It is characterized in that it detects the end of the insertion or removal operation of the printed board according to the order of resistive connection and disconnection of the wiring pattern, and controls one gate circuit per month for opening and closing the four circuits, and the control of the gate circuit for opening and closing is It is characterized in that it is performed when the control line of the gate circuit is connected to or disconnected from the wiring pattern of the printed board, and the control of the gate circuit for opening/closing is performed after the control line of the gate circuit is connected to the wiring pattern of the printed board. , The rotational operation of the ejector of the printed board is performed by electrically connecting and disconnecting the control line.

(5) Example of invention ''The author explains his invention in great detail in one blood example.

FIG. 1 is a PF3 diagram showing the Zorin I-board mounting method according to the first embodiment of the present invention. Figure t here is the backboard ai
When this connector C is installed, the plug part of the printed Buddha is connected to the connector ci, so electrical contact can be established. From the wire d, back signal line f, and ground 1 lqe cap ζ, the glint board's loop bars 1', -3 necessary signals, etc. (:lF, are lost).

Here, the present invention (1, arrangement of printed board W frame part j, yI pattern (a), (b), (c), 2), etc. (here, power supply (jt supply pattern (a), pattern)
Extend it to the 1st concubine frame part and 1st part, and add the bus signal line pattern (
(b) is shorter than the opening and is fastened inside the end;
Backboard a? This bus signal line pattern (b) is equipped with a gate circuit (drive circuit) g, and the power supply and ground are connected to each other.
In order to detect this, the third pattern (c) is made shorter than the signal pattern (b), and when this pattern (c) is inserted into the connector and correctly accommodated (this power source i1d, pattern (/uh, pattern),
A loose element is created in the ground wire, and the driving and stopping of the gate circuit g is controlled by this loose element. When the printed board is not inserted (n'C), the gate circuit g is turned off due to the level of the power supply line, and when the printed board is inserted, the level drops to ground and the gate circuit operates. In other words, the connections (the disconnection order is reversed) are the power supply, ground wire (■), bus opening/closing gate circuit control line (■), and signal line (■) of 1μ.
The supply of Route 48 is carried out last, which prevents noise and sound from being transmitted to others.

FIG. 2 is a configuration diagram showing a printed board mounting method according to a second embodiment of the present invention.

In the figures, the same symbols as in Figure 1 indicate similar objects,
The difference from the first (9) is that the control me' of the gate circuit g,
e' is to form a loose via the micro switch i installed adjacent to the ejector hl through the pattern (c) l, and the wiring from the pattern to the end of the contact part is similar to pattern (a). It is. Ejector h in Fig. 2 A
A partially enlarged view of the microswitch l is shown in FIG. 2BE.

Excerpts are usually made by one person published on a printed board and one person who is extracted from +IJR's work, with the top and bottom of the top and bottom working hard. Therefore, when the line of the ejector h rotates by more than a predetermined angle, it is assumed that the ejecting operation of the printed board has started, and this is detected by all the microswitches i, and the bus signal line is turned off to block the gate circuit. From this point, the supply of Ito No. 1 will be completely stopped.

In this example, the operation of the ejector! It is equipped with microswitches at the top and bottom for % intelligence, but it does not matter if there is only one microswitch. Please feel free to use the pattern (/) for controlling the gate circuit as shown in FIG.

(6) As described in detail, according to the present invention, the wiring pattern of the printed board connection part is formed in stages [27] Every second time, the wiring pattern of the printed board connection part is formed from the bus signal line supplied to the backboard to the printed board. Cutting off the signal connection to the gate circuit side MIi'l is done after the connection is completed (at the start of disconnection).

Therefore, the tight sound generated along with this does not get on the bass iζ. Also, when the power supply is unstable, the signal inside the printed board may leak to the outside of the printed board.

[Brief explanation of drawings]

441 is a block diagram of the print analysis mounting method which is the first embodiment of the present invention, FIG. 2A is a block diagram of the printed board mounting method which is the second embodiment of the present invention, and FIG. Figure 2A
FIG. d: i+j diagonal line, f: bus signal line, e: ground line, (a), (b), H2 (→ is printed board wiring pattern. Fig. 1

Claims (2)

[Claims] (1) Make sure that the signal wiring pattern at the connection part of the printed board with all the electronic equipment installed is shorter than the power wiring pattern, and on the backboard side, the gate circuit metal for opening and closing that is supplied from the signal line to the printed board is biased. A printed board mounting method characterized in that the completion of the insertion or removal operation of the printed board is detected according to the order of connection and disconnection of the wiring backs, and the opening/closing gate circuit is controlled. (2)-The control of the gate circuit for opening and closing is the gate 10J.
2. The printed board mounting method according to claim 1, wherein all the steps are performed when the control line of the circuit is connected to or disconnected from the wiring pattern of the printed board. (31) A patent characterized in that the control of the opening/closing gate circuit is performed by electrically connecting and disconnecting the control line by rotating an ejector of the printed board after the control line of the gate circuit is connected to the wiring pattern of the printed board. A printed board mounting method according to claim 1 or 2.