JPH04101499A - Mechanism for making electronic circuit package detachable - Google Patents

Abstract

PURPOSE:To prevent current from being flown in an electronic circuit package when the electronic circuit package is being inserted or removed and attain stable connection by providing the package with a switching means which sets the condition of the electronic circuit by making an electronic circuit package inserting/removing lever pivot. CONSTITUTION:In order to remove an electronic circuit package 1 from a unit case 2, an inserting/removing lever 9 is made to pivot in the direction shown by the arrow A. Thus, a contact point 10 does not touch a foot print 6 nor a foot print 8 and electric connection is cut. Electric signal does not flow in patterns 5 and 6 and the electronic circuit package 1 stops the operation. Then, when the inserting/removing lever 9 is turned, the pushing out part 9b of the inserting/removing lever 9 pushes the external plane 2c of the opening edge of the unit case 2. Thus, the electronic circuit package 1 moves in the direction shown by the arrow B, the connection of a connector is released and the electronic circuit package 1 is pulled out from the unit case 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for attaching and detaching an electronic circuit package.

[Conventional technology]

FIG. 4 is a perspective view showing a conventional electronic circuit package mounted on a general unit housing.

In the figure, 1 is an electronic circuit package made of a printed circuit board on which an electronic circuit is formed, 2 is a unit housing in which a plurality of the electronic circuit packages 1 are housed in parallel, and the tip side of the electronic circuit package 1 is Unit housing 2
A package connector 1a is provided which connects to a connector 3a provided on a backboard 3 that covers the back of the electronic circuit package 1 in the insertion direction.

4 is an insertion/extraction lever rotatably provided on both sides of the rear end of the electronic circuit package 1; 4a is this insertion/extraction lever 4;
a locking portion which is provided in the unit housing 2 and engages with the inner surface 2b of the open end of the unit housing 2 by rotating the insertion/extraction lever 4 after inserting the electronic circuit package 1 into the unit housing 2;
Reference numeral 4b denotes a push-out portion that abuts against the outer surface 2c of the open end of the unit housing 2.

The operation of the above-mentioned conventional example will be explained below.

The unit housing 20 is guided by a guide means (not shown),
When the electronic circuit package 1 is inserted into the unit housing 2, the push-out portion 4b of the insertion/extraction lever 4 abuts against the outer surface 2c of the open end of the unit housing 2, and the insertion/extraction lever 4 is moved as the electronic circuit package l is inserted. and rotate in the direction of the arrow.

When the electronic circuit package 1 is completely inserted, the package connector 1a of the electronic circuit package 1 and the backboard connector 3a of the unit housing 2 are connected, and the electrical connection between the electronic circuit package 1 and the unit housing 2 is established. It will be planned.

After the connectors are connected, when the insertion/extraction lever 4 is further rotated, the locking part 4a of the insertion/extraction lever 4 is attached to the unit housing 2.
engages with the inner surface 2b of the open end of the electronic circuit package 1.
cannot be removed from the unit housing 2.

When removing the stored electronic circuit package 1, the insertion/extraction lever 4 is first rotated in the opposite direction to the insertion direction. As a result, the engagement between the locking part 4a of the insertion/extraction lever 4 and the inner surface 2b of the open end of the unit housing 2 is released, the pushing part 4b comes into contact with the outer surface 2c of the open end, and the insertion/extraction lever 4 By rotating the electronic circuit package 1, the package connector 1a and the backboard connector 3 are moved.
The connection of a is released.

From this state, the electronic circuit package 1 could be further pulled out and completely removed from the unit housing 2.

[Problem B to be Solved by the Invention] However, the above-mentioned conventional technology has the following problems.

In other words, regardless of the state of the electronic circuit package, for example, it is possible to insert and remove the electronic circuit package (referred to as hot insertion and removal) while current is flowing through the electronic circuit package or the backboard connector of the unit housing. However, if hot insertion/removal is performed, a problem arises in that discharge occurs between the contacts of the package connector and the backboard connector, resulting in damage to the contacts.

In addition, when hot-swapping is performed, unnecessary current flows through the circuits of the electronic circuit package, and the connection order of electrical signals flowing through the electronic circuits of the electronic circuit package is undefined, so the electronic elements mounted on the electronic circuit package However, there is a problem in that the entire system using the unit housing may malfunction.

The present invention has been made to solve such problems, and provides an electronic circuit package attachment/detachment mechanism that allows stable connection by preventing current from flowing through the electronic circuit package during insertion/extraction. The purpose is to

[Means to solve the problem]

In order to achieve this object, the present invention houses an electronic circuit package in which an electronic circuit is formed on at least one side of a printed circuit board, and electrically connects the package connector provided at the tip of the housed electronic circuit package. a unit housing having a backboard connector connected to the electronic circuit package; In an electronic circuit package attachment/detachment mechanism that is provided with an insertion/extraction lever for locking the electronic circuit package to a unit housing, a switching means for setting the state of the electronic circuit is activated by rotation of the insertion/extraction lever due to insertion/extraction of the electronic circuit package. It will be installed in the circuit package.

[Effect]

In the present invention having the above-described configuration, the switch means is set so that no current flows through the electronic circuit package at the position of the insertion/extraction lever when the electronic circuit package is inserted or removed. The switch means is set so that when the insertion/extraction lever is rotated after the backboard connector of the body is connected and the electronic circuit package is locked to the housing, a current flows through the electronic circuit package.

Therefore, according to this, no current flows through the electronic circuit package when the electronic circuit is inserted or removed, so that discharge does not occur between the contacts and destroy the contacts.

Furthermore, malfunctions caused by current flowing during insertion and removal of the electronic circuit package can be prevented in the electronic circuit package and the entire system including the electronic circuit package.

[Example ] Examples will be described below with reference to the drawings.

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
The sectional view taken along the line A-A in the figure, and FIG. 3 are side views showing the operation of this embodiment. In this embodiment, parts with the same configuration as the conventional one are given the same numbers as the conventional one, and detailed explanations are omitted. do.

1 is an electronic circuit package, and as explained in FIG. 4 of the conventional example, although not shown here, there is a unit housing 2 on the tip side.
A package connector is provided to connect to a backboard connector provided on the back side of the device.

5 is a pattern printed on the electronic circuit package 1, and 6 is a footprint printed at the end of the pattern 5.

7 is a pattern printed on the electronic circuit package 1 as described above, and 8 is a footprint provided at the end of the pattern 7 at a predetermined distance from the footprint 6. The print 8 forms switch means for setting the state of the electronic circuit package 1.

Here, the footprint 6 and the footprint 8 are
It is not electrically connected on the electronic circuit parameter gauge 1,
In this state, no electrical signals flow through the patterns 5 and 7, and the electronic circuit package 1 does not operate.

Reference numeral 9 denotes an insertion/extraction lever, which is rotatably provided at at least one end of the rear end of the electronic circuit package 1.

10 is provided facing the surface on which the pattern 5.7 and the footprint 6.8 of the insertion/extraction lever 9 are printed, and protrudes in two directions in accordance with the spacing between the footprint 6 and the footprint 8. This contact point 10 is approximately V-shaped and has a spring property and is biased in the direction of the electronic circuit package 1, and this contact point 10 has a substantially V-shaped contact point 10 that is attached to the footprint 6.
The settings of the switch means formed by 8 are changed over.

The present invention will be explained in detail below.

When the electronic circuit package 1 is housed in the unit housing 2, as shown in FIG.
is engaged with the inner surface 2b of the open end of the unit housing 2, so that the electronic circuit package 1 cannot be removed from the unit housing 2, and the package connector of the electronic circuit package 1 and the unit The backboard connector of the housing 2 is electrically connected.

In this state, the contact spring 10 of the insertion/extraction lever 9 is in contact with both the footprint 6 and the footprint 8, the footprint 6 and the footprint 8 are electrically connected, and the pattern 5 and 7 are electrically connected. A signal flows and the electronic circuit package 1 operates.

Here, in order to remove the electronic circuit package 1 from the unit housing 2, the insertion/extraction lever 9 is rotated in the direction of arrow A as shown in FIG. 3(a).

When the insertion/extraction lever 9 is rotated as described above, the contact 10
The matte pudding 1-6 and the footprint 8 are no longer in contact with each other, and the electrical connection between the footprint 6 and the footprint 8 is cut off.

As a result, no electrical signal will flow through the pattern 5.6, and the electronic circuit package 1 will no longer operate.

When the insertion/extraction lever 9 is further rotated from this state, the push-out portion 9b of the insertion/extraction lever 9 pushes the outer surface 2c of the open end of the unit housing 2, as shown in FIG. 3(b).

As a result, the electronic circuit package 1 moves in the direction of arrow B, and the connection between the package connector of the electronic circuit package 1 (not shown) and the backboard connector of the unit housing 2 is released, and the electronic circuit package 1 is moved to the unit housing 2.
It can be removed from

When storing the electronic circuit package 1 in the unit housing 2, the electronic circuit package 1 is inserted into the unit housing 2 using a guide means (not shown) of the unit housing 2 as a guide.

When the electronic circuit package 1 is inserted into the unit housing 2, the push-out portion 9b of the insertion/extraction lever 9 comes into contact with the outer surface 2c of the open end of the unit housing 2, as shown in FIG. 3(b), and the electronic circuit is further removed. When the package 1 is inserted, the insertion/extraction lever 9 rotates.

Here, the contacts 10 of the vermillion insertion/extraction lever 9 and the footprints 6 and 8 are not in contact with each other, as shown in FIG. 3(a).
) The electronic circuit package 1 is inserted to the position shown in
After the package connector of the electronic circuit package 1 and the backboard connector of the unit housing 2 are connected, the insertion/extraction lever 9 is further rotated to bring the contacts 10 into contact with the footprints 6 and 8.

As a result, the footprint 6 and the mat print 8 are electrically connected, and the electronic circuit package 1
An electrical signal flows through the terminal, and a predetermined operation is started.

Further, since the locking portion 9a of the insertion/extraction lever 9 engages with the inner surface 2b of the open end of the unit housing 2, the electronic circuit package 1 cannot be removed.

In this embodiment, the switch function of the insertion/extraction lever is limited to one set of ON-OFF functions, but the number of contacts may be increased, a rotary switch may be incorporated, or the position of the footprint may be changed.

By changing the width, angle, etc., it is possible to adjust the connection order of the electronic circuits of the electronic circuit package according to the application.

〔Effect of the invention 〕

As explained above, the present invention accommodates an electronic circuit package in which an electronic circuit is formed on at least one side of a printed circuit board, and electrically connects the electronic circuit package with a package connector provided at the tip of the housed electronic circuit package. a unit housing having a backboard connector for connecting the electronic circuit package; In an electronic circuit package attachment/detachment mechanism provided with an insertion/extraction lever that locks to a unit housing, the electronic circuit package is provided with a switch means for setting the state of the electronic circuit by rotation of the insertion/extraction lever upon insertion/extraction of the electronic circuit package. In the position of the insertion/extraction lever when the electronic circuit package is inserted/extracted, the switch means is set in such a state that no current flows through the electronic circuit package.

Therefore, according to this, since no current flows through the electronic circuit package when the electronic circuit is inserted or removed, there is an effect that discharge does not occur between the contacts and destroy the contacts.

Further, in the electronic circuit package and the entire system including the electronic circuit package, it is possible to prevent malfunctions caused by current flowing when the electronic circuit package is inserted or removed.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
3 is a side view showing the operation of this embodiment, and FIG. 4 is an overall perspective view showing a conventional example. 1 ・ ・ 2 ・ ・ 6 ・ ・ 8 ・ ・ 9 ・ ・ 10 ・ Electronic circuit package unit housing footprint Footprint Insertion/extraction lever/contact

Claims (1)

[Claims] (1) It houses an electronic circuit package formed by forming an electronic circuit on at least one side of a printed circuit board, and has a backboard connector that electrically connects to a package connector provided at the tip of the housed electronic circuit package. a unit housing; rotatably supported by at least one side end of a rear end of the electronic circuit package and engaged with an open end of the unit housing to lock the electronic circuit package to the unit housing; In the electronic circuit package attachment/detachment mechanism provided with an insertion/extraction lever, the electronic circuit package is provided with a switch means for setting the state of the electronic circuit by rotation of the insertion/extraction lever when the electronic circuit package is inserted/extracted. Electronic circuit package attachment/detachment mechanism.