JPH0521485U - Electronic unit - Google Patents

Abstract

(57) [Abstract] [Purpose] In an electronic equipment unit in which a printed wiring board is inserted and mounted in the unit housing and the front surface is closed with a closing plate, a jig is required when pulling out the printed wiring board from the unit housing. Moreover, it is an object of the present invention to prevent the closing rate of the front surface of the unit housing by the closing plate from decreasing. [Structure] A closing plate is rotatably attached to an end of a printed wiring board via a hinge, and a photographing piece is formed at an end of the closing plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device unit having a plurality of printed wiring boards mounted thereon.

[0002]

[Prior Art]

 Electronic equipment units are progressing from natural air cooling to forced air cooling, and in order to enhance the air cooling effect, it is necessary to attach a closing plate to the front of the unit to close it, and it is also necessary to minimize the leakage of cooling air. is there. Such a conventional electronic device unit will be described below with reference to the drawings. FIG. 3 is a perspective view, and in the figure, reference numeral 1 is a unit housing, guide rails are provided on the upper plate and the bottom plate, and ventilation holes for air cooling are formed between the guide rails. Reference numeral 2 denotes a printed wiring board that is inserted and mounted in the unit housing 1, on which various kinds of electronic components are mounted, and a closing plate 3 is integrally provided at the rear end. A locking hole 4 for fitting and withdrawing a jig is formed. By inserting the printed wiring boards 2 into the guide rails of the unit housing 1 and fitting them, the front surface of each printed wiring board 2 is closed by the closing plate 3. As a result, the cooling air flows in from the ventilation holes of the bottom plate and flows out from the ventilation holes of the upper plate, so that the electronic components mounted on the printed wiring board can be cooled.

[0003]

[Problems to be solved by the device]

 According to the above-mentioned conventional technique, the printed wiring board cannot be directly pulled out manually because there is no place to grasp the printed wiring board, and a jig is required for pulling out. Further, the unit housings are used in a stacked state in the cabinet, and they are cooled together, and the cooling air is completely blown out from the bottom to the top as shown by the solid line in FIG. The printed wiring board in the unit housing is evenly cooled. Therefore, if there is a jig locking hole in the closing plate, the cooling air leaks from the locking hole in the middle as shown by the dotted line in Fig. 4 and the cooling air is sent to the upper unit housing. There is a problem that the amount of air in the air will decrease, the cooling effect of the printed wiring board mounted in the unit housing above them will deteriorate, and the failure of electronic components will occur.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention is an electronic equipment unit in which a printed wiring board is inserted and mounted in a unit housing and the front surface is closed by a closing board, and the closing board is rotatably attached to the end of the printed wiring board via a hinge. The feature is that a piece of image is formed at the end of this closing plate.

[0005]

[Action]

 According to the above configuration, the printed wiring boards are sequentially inserted into the unit housing to be mounted. At that time, the printed wiring boards are mounted by bending the closing plate with the hinges and closing the front surface of the unit housing. And it can be closed at the same time. Next, when pulling out the printed wiring board, the photographing piece of the closing plate can be taken and pulled to raise the photographing piece from the hinge, whereby the closing board can be grasped and pulled out.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view, and FIG. 2 is an enlarged cross-sectional view taken along the line I-I of FIG. 1. In the figure, 1 is a unit housing, and 5 is a printed wiring board inserted and mounted in the unit housing 1. A closing plate 6 is rotatably attached to an end of the closing plate 6 via a hinge 7. A photographing piece 8 is bent at the end of the closing plate 6, and the photographing piece 8 is photographed. It is possible to pull the printed wiring board 5 with the hinge 7 so that it extends, and when it is bent with the hinge 7, the front surface can be closed to act as the closing plate 6. Therefore, the width of the closing plate 6 is set so as to close the spaces between the printed wiring boards 5 that are continuously stored.

According to the above configuration, the printed wiring boards 5 are sequentially inserted into the unit housing 1 and mounted. At that time, the closing plate 6 is bent by the hinges 7 to close the front surface of the unit housing 1. As a result, the printed wiring board 5 can be mounted and closed at the same time. Next, when the printed wiring board 5 is pulled out, the photographing piece 8 of the closing plate 6 can be taken and pulled to raise the photographing piece 8 from the hinge 7, whereby the closing plate 6 can be grasped and pulled out. .. In the above embodiment, the hinge 7 may be provided with a spring for urging the hinge 7 in the direction in which the hinge 7 is always bent. In this case, mounting the printed wiring board 5 ensures that the closing plate 6 is closed. It will be in a state.

[0008]

[Effect of the device]

 According to the present invention described in detail above, the closure plate is rotatably attached to the end of the printed wiring board via the hinge, and the photographing piece is formed at the end of the closure plate. The front of the unit case is closed and it also serves as a grip when pulling out, so that a reliable closed state can be obtained, and there is the effect that no special jig is required when inserting and removing the printed wiring board.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment.

FIG. 2 is an enlarged cross-sectional view taken along line I-I of FIG.

FIG. 3 is a perspective view showing a conventional example.

FIG. 4 is an explanatory diagram showing a cooling state of a unit housing.

[Explanation of symbols]

 1 Unit housing 5 Printed wiring board 6 Closing plate 7 Hinge 8 Shooting piece

Claims (1)

[Scope of utility model registration request] 1. An electronic equipment unit in which a printed wiring board is inserted and mounted in a unit housing, and the front surface of the printed wiring board is closed by a closing plate. An electronic device unit characterized in that a photographing piece is formed on an end portion of the closing plate.