JPH05152775A - Device for preventing coming off of printed board - Google Patents

Abstract

PURPOSE:To obtain a device for preventing coming off of printed boards in which a hook and a retainer can be fixed to a housing shelf and the printed board regardless of the mounting position of an input-output connector, etc., mounted on the printed board and, which can be easily fitted and fixed without making any additional machining work, etc., to a ready-made housing shelf. CONSTITUTION:In this device for preventing coming off of a printed board 2 mounted on an electronic equipment housing shelf 1, a hook 8 equipped with pawls 8a to be put in the heat radiating slit holes 7 of the shelf 1, retainer 9 which presses the board 2, and fixing screws 10 for fixing the retainer 9 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board removal prevention device, and more particularly to a printed circuit board removal prevention device in a printed circuit board storage shelf of electronic equipment.

[0002]

2. Description of the Related Art FIG. 2 is a perspective view of a conventional printed circuit board removal prevention device. In FIG. 2, reference numeral 1 is a printed circuit board 2.
A storage shelf for storing the information, 3 is a backboard-side connector, 4 is a removal preventing metal fitting for preventing the printed circuit board 2 from being removed, 5 is a connector, 6 is a printed circuit board insertion / removal lever for inserting / removing the printed circuit board 2, and 7 is for radiating heat. It is a heat dissipation slit hole.

Next, the operation of this conventional example will be described with reference to FIG. In FIG. 2, after the printed circuit board 2 is inserted into the storage shelf 1 and the printed circuit board 2 side plug is fitted and connected to the back board side connector 3, the pull-out prevention metal fitting 4 is stored near the center of the end surface in the printed circuit board 2 removal direction. It is fixed by pressing through the shelf 1. By doing so, in the conventional example, the contact failure of the fitting portion due to the printed circuit board 2 popping out of the storage shelf 1 against vibration during transportation of the electronic device, earthquake motion during driving of the electronic device, human impact, and the like. Had to prevent malfunction.

[0004]

In the conventional printed circuit board removal prevention device, the vicinity of the center of the printed circuit board end face is pressed by the printed circuit board removal prevention metal fitting, so that the input / output signal is applied to the printed circuit board end surface portion in contact with the removal prevention metal fitting. There was a problem that the connectors could not be mounted and the structure of the board was restricted.

The present invention has been made in order to solve the above-mentioned problems, eliminates the restriction of mounting connectors on a printed circuit board, facilitates a printed circuit board pull-out prevention device, and allows existing products to be manufactured. The purpose is to be easily attached and fixed to the device without additional processing.

[0006]

For this reason, in the present invention, the locking means having the locking portion for locking the printed circuit board storage shelf, the holding means for pressing and holding the printed circuit board, and the locking means. It is an object of the present invention to solve the above-mentioned problems and achieve the above-mentioned object by a printed circuit board slip-out preventing device including a stopping means and a connecting means for connecting the holding means.

[0007]

In the printed circuit board slip-out prevention device according to the present invention, the locking means is locked by the locking portion of the locking means to the printed circuit board storage shelf, the printed circuit board is pressed and held by the holding means, and the coupling means engages. The stopping means and the holding means are connected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a printed circuit board removal prevention device according to an embodiment of the present invention.

In FIG. 1, Y is a printed circuit board slip-out prevention device, and A is a locking portion, which is composed of U-shaped pawls 8a at both ends of locking means (described later). Lock on. B is a locking means, which is composed of a U-shaped hook 8 having the above-mentioned U-shaped claws 8a at both ends, and is a means for locking the printed board storage rack 1 at the locking portion A.

C is a holding means, which is constituted by a retainer 9 and is a means for holding the printed circuit board 2 by pressing it.

Reference numeral D denotes a connecting means, which is composed of a fixing screw 10, and is a means for connecting the locking means B and the holding means C.
Reference numeral 6 denotes a printed circuit board insertion / extraction lever for inserting / removing the printed circuit board 2, and reference numeral 7 denotes a heat radiation slit hole in which the U-shaped claw 8a is held.

Next, the operation of the above embodiment will be described with reference to FIG. In FIG. 1, the hook 8 and the retainer 9 are previously connected by a fixing screw 10. Loosen the fixing screw 10, insert the hook 8 into the heat dissipation slit hole 7 of the storage shelf 1 so as to cover several printed circuit board insertion / extraction levers 6 (four in the figure), and fix the storage rack 1 with the fixing screw 10 and the claw 8a. And hook 8
And fix the retainer 9.

[0013]

As described above, according to the present invention, the printed circuit board slip-out preventing device can be fixed regardless of the mounting positions of the input / output connectors mounted on the printed circuit board, and the mounting methods are also compared. There is an effect that can be easily done. In addition, even when it is attached to an existing product, there is a highly versatile effect that it can be easily attached without performing work such as additional processing.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a printed circuit board removal prevention device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a conventional printed circuit board removal prevention device.

[Explanation of symbols]

 1 Storage Shelf 2 Printed Circuit Board 3 Backboard Connector 7 Heat Dissipation Slit Hole 8 Hook 8a Claw 9 Retainer 10 Fixing Screw In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A locking means having a locking part for locking to a printed circuit board storage shelf, a holding means for pressing and holding the printed circuit board, and a coupling means for coupling the locking means and the holding means. A printed circuit board pull-out prevention device, comprising: