JP2663958B2 - Insertion / extraction mechanism for electronic circuit package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel structure of a package insertion / extraction mechanism in an electronic device having a large number of electronic circuit packages housed in a shelf.

[0002]

2. Description of the Related Art In electronic equipment such as a multiplex radio apparatus,
The electronic circuit package mounted in the shelf is engaged with the connector on the backboard by the operation of a card lever pivotally supported at the upper and lower ends of the front edge thereof, and is mounted on the front plate mounted on the front surface of the package. It is common to penetrate the upper / lower ends and fix it to the shelf body by means such as screws.

[0003]

However, this fixing with screws has the disadvantage that the mounting / removing operation is troublesome and requires many man-hours. Moreover, recently, the entire package is often housed in a metal case for EMI measures,
In such a case, it becomes difficult to install the screws themselves, and the package must be held only by the mating frictional force of the connector connection, and there is a problem in terms of earthquake resistance and impact resistance.

The present invention solves the above-mentioned problems of the prior art, improves the above-described insertion / extraction mechanism using the card lever, and provides a locking function to the electronic circuit package. It is intended to be able to be held in a shelf.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a holder which is fixed to the upper / lower corners of the front edge of an electronic circuit package and has an arched latch at the tip, and which is rotatably supported with respect to the holder. A card lever, and a slider housed in the internal space of the card lever so as to be slidable in the longitudinal direction by a fixed distance, and the slider has a hook that can be locked to the latch and a hook that can be locked to the latch. The slider is resiliently urged so that the operation tab projects out of the card lever. When the hook comes into contact with the latch by the rotation of the card lever, the slider is engaged with the slider. The position of the card lever is locked, and when the operation tab protruding from the card lever is pressed in this state, the lock is released, thereby achieving the electronic circuit package insertion / extraction mechanism.

[0006]

When inserting the package into the shelf, when the package pushed into the shelf hits the connector on the backboard side, the card lever in the horizontal position is rotated to the vertical position, and the connector is inserted as usual. Let them join. Then, at the same time, the hook of the slider comes into contact with the latch of the holder, and the cam slides between the slider and the slider to slide against the resilient urging force, and the hook automatically engages with the latch. Thereafter, the slider returns to the original position again by the elastic force. As a result, the entire card lever is locked and stably restrained at that position.

Conversely, to remove the package from the shelf, the protruding operation tab is pushed in, the hook and the holder are separated, and the lock is released. Then, the card lever may be rotated to the horizontal position to loosen the connector fitting, and then the package may be pulled out. Hereinafter, the present invention will be described in more detail based on preferred embodiments shown in the drawings.

[0008]

FIG. 1 shows an example in which the insertion / extraction mechanism of the present invention is mounted on an electronic circuit package having a shield case. A printed wiring board 2 is provided inside a box-shaped shield case 1.
Is accommodated, and the front plate 3 is further mounted thereon to form an electronic circuit package. The rails 4 provided on the upper and lower surfaces of each case 1 are engaged with the rail grooves on the shelf side to be introduced into the shelf, and the connector 5 mounted on the rear edge of the printed wiring board 2 is connected to the rear side of the shelf. The electronic device is configured by fitting and fixing to the connector of the backboard installed in the electronic device.

The package insertion / extraction mechanism A of the present invention is mounted on the front corners of the upper and lower rails 4 of each package. As shown in FIG. 2, the insertion / extraction mechanism includes a holder 8 fixed to the rail 4 by rivets 7 and a card lever 10 rotatably supported by the holder 8 by pins 9.
And a slider 1 slidable in the card lever 10.
It is composed of three members. FIG. 2 shows only the lower insertion / extraction mechanism, but the upper one has the same configuration.

The three are assembled as shown in FIG. 4a. That is, the slider 11 has the elongated hole 1 penetrating its body.
The card lever 10 is fastened to both side walls of the card lever 10 via the pin 2 and fits in the internal space between the two side walls so that the inside of the card lever 10 can be slid in the double-headed arrow direction within the long hole 12. Has become. A hole 13 having a predetermined depth is formed in a rear wall of the internal space, and a coil spring 14 is mounted on the hole 13 and fitted into a rear projection 11 a of the slider 11. For this reason, the slider 11 is always urged in the direction of the arrow X with respect to the card lever 10, and the operation tab 11 at the tip thereof is
b protrudes from the front end of the card lever 10.

The slider 11 has a hook 15,
The holder 8 has an arched latch 16 which can be engaged with the hook 14. Further, the rear end of the card lever 10 is provided with a jaw 17 for a connector fitting / releasing operation, like the conventional card lever. Next, the operation of inserting a package by this insertion / extraction mechanism will be described with reference to the drawings.

3a to 3c show the operation of the card lever by a finger, and FIGS. 4a to 4d show the movements of the respective elements inside the insertion / extraction mechanism corresponding thereto. When inserting the package into the shelf, the card lever 10 is inserted as shown in FIGS. 3a and 4a.
Is pushed into the shelf while rotating it toward you so that it is in a horizontal position.

When the connectors abut each other, the card lever 10 is rotated about the pin 9 in the direction of the arrow as usual, as shown in FIGS. 3b and 4b. The jaw 17 then engages the groove 18 on the front edge of the shelf, and further pushes the package by leverage as shown in FIG. 4c. At this time, the hook 15 of the slider 11 is
The slider 11 moves in the direction of the arrow against the urging force of the coil spring 14 due to the cam action between the contact surfaces of the two, and the hook 15 enters the inside of the latch 16. This state is shown in FIGS. 3c and 4d. At the same time, the coil spring 14
The slider 11 returns to the original position again by the urging force of the above, and the card lever 10 is automatically locked. At this time, a snapping sound is generated by the resilient contact between the hook and the latch to inform an operator that the connector fitting is completed.

The operation of removing the package from this position will be described with reference to FIGS. 5A to 5C and FIGS. 6A and 6B.
As shown in FIGS. 5A and 6A, the operation tab 11b protruding from the tip of the card lever 10 in the vertical position is pushed and retracted. Then, the hook 1 of the slider 11
Since the lock 5 is released by releasing the latch 5 from the latch 16, the card lever 10 becomes rotatable. In this state,
As shown in FIGS. 5B and 6B, when the card lever 10 is rotated to be horizontal, the jaws 17 are engaged with the grooves 18 on the front edge of the shelf, and the connector is fitted by leverage in the opposite direction to the front. If loosened. Thus, the package may be pulled out by grasping the card lever 10 in the horizontal posture (FIG. 5C).

[0015]

As described in detail above, according to the present invention,
The card lever can be automatically placed in the lock position and the release position by the insertion / removal operation of the card lever, and it is not necessary to fix the card lever with a screw as in the related art. Further, when the insertion of the package is completed and the card lever is locked, a snapping sound is generated by the resilient contact between the hook and the latch, so that the operator can be notified of the completion of the operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall structure of a package provided with an insertion / extraction mechanism of the present invention.

FIG. 2 is an exploded perspective view of the insertion / extraction mechanism of the present invention.

FIG. 3 is a perspective view showing a procedure for inserting a package by the insertion / extraction mechanism of the present invention.

FIG. 4 is an enlarged sectional view showing the movement of the insertion / extraction mechanism when the package is inserted.

FIG. 5 is a perspective view showing a procedure for removing a package by the insertion / extraction mechanism of the present invention.

FIG. 6 is an enlarged sectional view showing the movement of the insertion / extraction mechanism when the package is extracted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shield case 2 ... Printed wiring board 3 ... Top plate 4 ... Rail 7 ... Rivet 8 ... Holder 9 ... Pin 10 ... Card lever 11 ... Slider 11a ... Protrusion 11b ... Operation tab 12 ... Elongated hole 13 ... Round hole 14 ... Coil Spring 15 ... Hook 16 ... Latch 17 ... Jaw 18 ... Shelf groove

 ──────────────────────────────────────────────────続 き Continued on the front page (56) References Japanese Utility Model Sho-62-140793 (JP, U) Japanese Utility Model Hei 1-127292 (JP, U)

Claims (1)

(57) [Claims] 1. A holder (8) fixed to the upper / lower corners of the front edge of an electronic circuit package and having an arched latch (16) at the tip, and a pivotally rotatable support with respect to the holder (8). Card lever (10) and the card lever (10)
And a slider (11) housed slidably in the internal space thereof in the longitudinal direction by a fixed distance, and the slider (11) is hookable to the latch (16).
5) and an operation tab (11b) for releasing the lock.
The slider (11) is resiliently biased so that the operation tab (11b) protrudes out of the card lever (10), and the hook (1) is rotated by the rotation of the card lever (10).
When 5) comes into contact with the latch (16), they are engaged to lock the position of the card lever (10), and in this state, the operation tab (11b) projecting from the card lever (10).
The lock is released by pushing in the electronic circuit package.