JPH03244196A - Electronic circuit package - Google Patents

Abstract

PURPOSE:To prevent the wrong operations of users of the title package at the time of inserting the package by making the light of a photo-interrupter not to be detected when the package is inserted by operating an ejector only and to be detected at the time of removing the package. CONSTITUTION:When this electronic circuit package 4 is completely inserted into the connector 6 of a back wiring board 7, both of an ejector 1 having an interrupting projection 2 and a standard ejector 5 are locked to a frame 9 and the projection 2 interrupts an optical path in a state where the projection 2 is completely engaged with a photo interrupter. By interrupting the optical path in such way, the insertion and removal of the package 4 can be detected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic circuit package, and more particularly to an electronic circuit package equipped with an ejector used to facilitate removal from a mounting rack.

[Conventional technology]

In conventional electronic circuit packages, the package is mounted and removed using an ejector for fixing the package and a manual switch. In other words, conventionally, when a package is inserted or removed with the power turned on, the output buffer IC connected to the bus may temporarily go into a high or low state instead of a three-state state, resulting in malfunction. It was causing this.

FIG. 3 is a plan view of an elliptical Paguge press machine for explaining an example of such a conventional machine.

As shown in FIG. 3, conventionally, a manual switch 10 was provided separately from the ejector 5 to set the output to three-state to prevent malfunction when inserting or removing the package 4, and the switch 10 must be turned on before removing the package 4. After setting it to high impedance, use this switch 10 when disconnecting or installing it.
Malfunctions due to incorrect insertion of the package 4 are prevented by inserting the package 4 in a state in which the package 4 is inserted, that is, in a high impedance state.

[Problem that the invention seeks to solve]

The above-mentioned conventional electronic circuit package using a manual switch has a disadvantage in that it is susceptible to human error during installation.

An object of the present invention is to provide an electronic circuit package that eliminates such human error in mounting.

[Means for solving problems]

The electronic circuit package of the present invention includes an ejector having a shielding protrusion attached to the end portion for easy removal from the mounting rack, and a photo interrupter attached to the surface so as to be able to engage with the shielding protrusion of the ejector. The bottom of the tank is set so that when the photo-interrupter is inserted only by operating the ejector, the light from the photo-interrupter changes from a detection state to an undetected state, and when it is removed, the light changes from an undetected state to a detected state.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1(a) and 1(b) are plan views before and after insertion of an electronic circuit package, respectively, for explaining one embodiment of the present invention.

As shown in FIGS. 1(a) and 1(b), this electronic circuit package 4 is provided with a protrusion-equipped ejector 1 having a shielding protrusion 2 at the end thereof, and a surface thereof is adapted to engage with the shielding protrusion 2. Interrupter 3 is installed.

First, as shown in Figure 1 (a), the electronic circuit package 4 is completely attached to the back wiring boat 7 with the connector 6 mounted on one side and the connector pins 8 protruding from the opposite side. Before being mounted on the frame 9, the ejector 1 with a protrusion 1 having the shielding protrusion 2 rotatably attached to the end of the electronic circuit package 4 and the normal standard ejector 5 are not locked to the frame 9, and the shielding protrusion 2 is It is in a state where it is not completely engaged with the photo interrupter 3.

Next, as shown in FIG. 1(b), when the electronic circuit package 4 is completely inserted into the connector 6 of the back wiring board 7, the protrusion-equipped ejector 1 having the shielding protrusion 2 also becomes the standard ejector 5. Both are locked to the frame 9, and the shielding protrusion 2 of the ejector 1 completely engages with the photo interrupter 3 to block the optical path. By blocking the optical path in this way, insertion and removal of the package 4 can be detected.

FIG. 2 is a partially enlarged perspective view of the ejector and photo-interrupter shown in FIGS. 1(a) and 1(b).

As shown in FIG. 2, the protruded ejector 1 having the shielding protrusion 2 may have a simple structure that engages with the photo-interrupter 3 having a concave cross section.

In this way, at the same time as the electronic circuit package 4 is installed, the interrupter 3 can identify whether the installed package is correct or incorrect, and determine whether it has been inserted in the correct position.
The simple structure can prevent human errors.

〔Effect of the invention〕

As explained above, the electronic circuit package of the present invention is provided with an ejector with a protrusion having a shielding protrusion at the end and a photo interrupter on the surface thereof, and by inserting and removing the ejector, the light of the first to interrupter is removed. By automatically turning on and off, it is possible to eliminate human errors in inserting the package and prevent malfunctions of the pass line.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are plan views before and after inserting the package, respectively, for explaining one embodiment of the present invention, and FIG. 2 is shown in FIGS. 1(a) and (b). FIG. 3 is a partially enlarged perspective view of an ejector and a photo interrupter, and a plan view of a package insertion/extraction mechanism for explaining a conventional example. 1... Ejector with protrusion, 2... Shielding protrusion, 3...
・Photo interrupter, 4...Package, 5...
・Standard ejector, 6...Connector, 7...Back・
Wire link port, 8...Connector pin, 9...Fly 1. .

Claims (1)

[Claims] The ejector has an ejector having a shielding protrusion attached to the end to facilitate removal from the mounting rack, and a photo-interrupter attached to the surface so as to be able to engage with the shielding protrusion of the ejector, and the ejector can be inserted only by operating the ejector. An electronic circuit package characterized in that when the photo-interrupter is removed, the light of the photo-interrupter changes from a detected state to an undetected state, and when it is removed, the light of the photo-interrupter changes from an undetected state to a detected state.