JPH0683480A - Desktop electronic equipment structure - Google Patents

Abstract

PURPOSE:To generate no radio wave disturbance to other equipments and to eliminate the possibility that an external line cable is not misconnected at the time of maintenance inspection as to the desk-top electronic equipment structure having plural printed circuit boards, a power unit, etc., in a metallic housing. CONSTITUTION:This structure has a box-shaped bottom plate member 10 which has an opening atop, a partition plate 20 which partitions the part above the bottom plate member 10 into a front chamber 11 and a rear chamber 12, shelves 30 with rails which are stored in the front chamber 11 while open to the rectangular window 21 of the partition plate 20, the printed circuit boards 5 which are inserted in stages into the shelves 30 with the rails, and plural external line cables 7 which are connected to the printed circuit boards 5 and led out through the rear chamber 12. Further, this structure has a front upper cover 40-1 which forms the front chamber 11, a front cover 3 which mounted detachably on the front side of the front upper cover 40-1, and a rear upper cover 40-2 which has a cable guide-in cut 41 at the lower edge part of the rear plate member 42 and is mounted detachably on the bottom plate member 10 to form the rear chamber 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desk electronic equipment structure in which a plurality of printed wiring boards, a power supply unit and the like are housed in a metal housing.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view of a conventional tabletop electronic device. In FIG. 5, reference numeral 1 is a shallow box-shaped member having an open top, and is a bottom plate member made of a metal plate on which a shelf with rails and a power supply unit are mounted. A foot made of rubber or the like is attached to each of the lower parts of the four corners of the bottom plate member 1.

A shelf with rails (not shown) mounted on the bottom plate member 1 is U-shaped in a plan view, and rails are arranged in multiple stages facing the left and right side plate portions, respectively. A plurality of printed wiring boards 5 are mounted on the shelf with rails in multiple stages by inserting the printed wiring boards 5 into the shelf with rails from the rear opening.

The bottom plate member 1 also has a power supply unit and the like mounted side by side on a shelf with rails. Reference numeral 2 is a box-shaped upper cover having an open bottom. At the location corresponding to the opening of the shelf with rails on the rear plate member 2-1 of the upper cover 2,
A rectangular window 2-2 that is almost equal to the opening is provided.

The upper cover 2 is fitted to the bottom plate member 1 so that the lower portions of the side plate member and the rear side plate member 2-1 overlap with the corresponding side plates of the bottom plate member 1, and the lower parts of the side plate member and the rear side plate member 2-1. Are fixed to the side plates of the bottom plate member 1 by using screws.

Reference numeral 3 is a front cover that closes an opening on the front surface of the upper cover 2. That is, the printed wiring board 5 and the power supply unit are housed in a housing including the bottom plate member 1, the upper cover 2 and the front cover 3.

Then, the external cable 7 is connected to the printed wiring board 5 by inserting the cable connector 8 into the window 2-2 and plugging it into the connector 6 mounted on the rear side edge of the printed wiring board 5.

[0008]

As described above, the printed wiring boards are mounted in multiple stages on the shelf with U-shaped rails in plan view, and the housing for housing them has a rear side plate for easy insertion and removal of the cable connector. The member has a large rectangular window.

Therefore, the conventional desk-top electronic device has a problem in that radio waves emitted from the printed wiring board from this window, which causes noise, are emitted to the outside of the housing, and other electronic devices cause radio interference. It was

On the other hand, in order to maintain and inspect the printed wiring board, the cable connector is removed from the printed board connector, the external cable is removed, and then the upper cover is removed and the printed wiring board is removed from the shelf with rails.

After this inspection, when connecting the external cable to the corresponding printed wiring board, the external cable was not organized, so there was a risk of connection errors. The present invention was created in view of the above circumstances, and provides a desk-top electronic device structure that does not cause radio interference to other devices and does not have a risk of incorrect connection of an external cable during maintenance and inspection. Is intended.

[0012]

In order to achieve the above object, the present invention, as illustrated in FIG. 1, is a box-shaped bottom plate member 10 having an upper opening, and a bottom edge of the bottom plate member 10. In addition, the side edges are closely adhered to the left and right side plates 15 of the bottom plate member 10 and are vertically fixed to the bottom plate member 10, and the partition plate 20 that partitions the upper side of the bottom plate member 10 into a front chamber 11 and a rear chamber 12 is provided. And a rail-equipped shelf 30 housed in the front chamber 11 so as to open to the rectangular window 21 of the partition plate 20.

By inserting the rails from the window 21 side into the rails 30, the printed wiring boards 5 are inserted into the shelf with rails 30 in multiple stages, and the connectors 6 mounted on the rear edge of the printed wiring board 5 are plugged in. Thus, it has a plurality of external cable 7 connected to each printed wiring board 5 and led out to the outside via the rear chamber 12.

Further, the left and right side plate members are detachably attached to the side plate 15 of the bottom plate member 10, and are attached to the bottom plate member 10.
An upper front cover 40 that forms the upper surface and left and right side surfaces of the front chamber 11.
-1 and the front side of the front upper cover 40-1 are detachably attached,
The front cover 3 for closing the front of the front chamber 11 and the cable introduction notch 41 at the lower edge of the rear plate member 42 are detachable so that the left and right side plate members are in close contact with the side plate 15 of the bottom plate member 10. The rear plate cover 10 is attached to the bottom plate member 10, and has a rear upper cover 40-2 that forms an upper surface, left and right side surfaces, and a rear surface of the rear chamber 12.

Alternatively, as illustrated in FIG. 2, the bottom plate member 10
A cable holder consisting of a trunk member 51 fixed to the bottom of the trunk and a plurality of holder elements 52 mounted on the trunk member 51 in a multi-tiered manner in a lateral branch manner so as to sandwich each of the external cables 7.
50 is installed in the rear chamber 12.

[0016]

The notch for introducing the cable provided in the rear upper cover according to the present invention is provided in a direction different from the window of the partition plate.

On the other hand, the rail-equipped shelf on which the printed wiring board is mounted is housed in a front chamber of the housing, and the front chamber is covered with a front cover, a front upper cover and a partition plate. Further, the front chamber and the rear chamber communicate with each other through a window provided on the partition plate, and the rear chamber communicates with the outside through a small cable introducing notch provided on the rear upper cover.

Therefore, most of the radio waves emitted from the printed wiring board are confined in the front chamber. Then, a part thereof flows out to the rear chamber through the window of the partition plate, but is confined in the rear chamber, and is hardly released to the outside through the cable introducing notch.

On the other hand, according to the second aspect of the present invention, the cable holder mounted in the rear compartment is provided with the holder elements in the vertical direction in multiple stages corresponding to the printed wiring board in a one-to-one manner, and the external cable is held in this holder. Each element is sandwiched and aligned.

Therefore, at the time of maintenance and inspection of the printed wiring board,
Even if the rear upper cover is removed and then the cable connector is removed from the printed wiring board, it is sufficient to connect the outermost cable wired in the uppermost step to the printed wiring board in the uppermost step and connect them in a supported order. The wrong connection of the printed wiring board is prevented.

[0021]

The present invention will be described in detail with reference to the drawings. The same reference numerals denote the same objects throughout the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention in a separated form, FIG. 2 is a view of another embodiment of the present invention, FIG. 3 is a detailed view of a holder element, and FIG. 4 is an embodiment of the present invention. It is an external view of an example. As shown in FIG. 4, the chassis of the desk-top electronic device of the present invention includes a bottom plate member 10, a front upper cover 40-1, a rear upper cover 40-2,
And the front cover 3, and the external cable 7 is drawn out from the rear surface of the rear upper cover 40-2 to the outside.

As shown in FIG. 1, the bottom plate member 10 is a shallow box shape having a front side plate having a notched central portion, a pair of left and right side plates 15, and a rear edge member 16 and having an upper opening. Attach a foot made of rubber etc. to each of the bottom of the four corners of
The electronic device can be stably placed on a table or the like.

The front upper cover 40-1 is composed of a ceiling plate and a pair of left and right side plate members, and the lower side is open. Front top cover 40-1
The left and right side plate members are fitted to the bottom plate member 10 so as to be in close contact with the side plate 15 of the bottom plate member 10, and the lower part of the side plate member is fixed to the side plate 15 of the bottom plate member 10 by using a small screw, so that the bottom plate member described later will be described. It constitutes the upper surface and the left and right side surfaces of the ten front chambers 11.

The rear upper cover 40-2 is composed of a ceiling plate, a pair of left and right side plate members, and a rear side plate member 42, and the lower side is open. At a selected portion of the lower edge of the rear plate member 42, a cable introduction notch 41 having a size through which the external cable 7 having an opening at the bottom can pass is provided.

The rear upper cover 40-2 is fitted to the bottom plate member 10 behind the front upper cover 40-1 and side plates of the bottom plate member 10 are fixed by using small screws.
By being fixed to 15, the upper surface, the left and right side surfaces, and the rear surface of the rear chamber 12 described later are configured.

Although not shown in the drawings, strip-shaped plates protruding toward the rear chamber 12 are attached to the inside of the ceiling plate and side plate members of the front upper cover 40-1 to attach the front upper cover 40-1 and the rear upper cover 40-1. It is preferable that there be no gap on the end face that is mated with the cover 40-2.

The front cover 3 is fixed to the bottom plate member 10 using small screws on the front side of the front upper cover 40-1 to close the front side of the housing. 20, the bottom edge portion is adhered to the bottom surface of the bottom plate member 10 and fixed by spot welding or the like, and the side edge portions are adhered to the left and right side plates 15 of the bottom plate member 10 respectively and fixed by spot welding or the like. By being vertically fixed to the bottom plate member 10, it is a partition plate that partitions the upper part of the bottom plate member 10 into a front chamber 11 and a rear chamber 12.

A desired large rectangular window 21 is provided at a position on one lateral side of the partition plate 20, and a screw hole is provided near the edge of the window 21. Reference numeral 30 is a shelf with rails, which is composed of a pair of left and right side plate members and a backboard 31 and has a U-shaped plan view that is open at the front.

Inside the side plate member of the shelf 30 with rails,
Rails that serve as guides for inserting the printed wiring board 5 are provided in multiple stages. Further, the backboard 31 is mounted with a multistage backboard connector into which the printed board connector 5A mounted on the front side edge of the printed wiring board 5 is plugged.

A pair of left and right front edge plates are provided on the opening side of the shelf 30 with rails, and screw holes are provided in the front edge plates. The window 21 of the partition plate 20 has the same shape as the opening of the shelf 30 with rails.

Reference numeral 32 denotes a shelf edge frame that abuts the surface of the partition plate 20 on the rear chamber 12 side, and has screw holes corresponding to the screw holes of the front edge plate of the rail-equipped shelf 30. The rail-equipped shelf 30 is housed in the front chamber 11, its opening is aligned with the window 21, and the front edge plate is brought into contact with the surface of the partition plate 20 on the front chamber 11 side. On the other hand, on the surface of the partition plate 20 on the rear room 12 side, the shelf edge frame 32
Align. Then, insert small screws into the screw holes of the shelf edge frame 32 and the screw holes of the partition plate 20, and screw them into the screw holes of the rail-equipped shelf 30 to partition the shelf 30 with rails.
It sticks to 20.

A power supply unit (not shown) is mounted in the space in the front chamber 11 in the lateral portion of the rail-equipped shelf 30. In order to assemble the desk-top electronic device configured as described above, after the partition plate 20 is fixed to the bottom plate member 10, the shelf 30 with rails is attached to the front chamber 11, and the front upper cover 40-1 and the front cover 3 are attached. Install.

Then, the printed wiring board 5 is inserted into the shelf 30 with rails from the window 21 side, and a desired number of printed wiring boards 5 are mounted on the shelf 30 with rails. The cable connector 8 attached to the end of the external cable 7 is plugged into the connector 6 mounted on the front side edge of the printed wiring board 5.

Then, the external cable 7 is routed so as to bypass the inside of the rear chamber 12, and a notch for introducing the cable of the rear edge member 16 is formed.
Over the portion corresponding to 41, pull out the external cable 7 to the outside.

Next, the rear upper cover 40-2 is fitted to the bottom plate member 10. Reference numeral 50 shown in FIG. 2 is a cable holder composed of a trunk member 51 and holder elements 52, the number of which is equal to the number of external cables.

The trunk member 51 is an L-shaped metal plate having a vertical plate portion in which a hole into which the protrusion 52c of the holder element 52 is fitted is vertically formed. The cable holder 50 is planted in the rear chamber 12 by seating the horizontal member of the trunk member 51 on the bottom surface of the bottom plate member 10 and screwing.

The holder element 52 is formed by molding an elastic plastic into a substantially U-shape, and the U-shaped main body 52a having a pair of legs and the ends of the U-shaped main body 52a on the opening side of the legs are bent inward. Provided claw 52b and U-shaped body
A protrusion 52a with a narrow neck and a roughly spherical head on the end face of 52a
It consists of c and.

The holder element 52 is mounted on the trunk member 51 in a multi-tiered manner by pressing the projections 52c into the holes of the trunk member 51 and engaging them. The holder element 52 having the outer cable 7 connected to the uppermost printed wiring board 5 mounted on the uppermost portion
Is inserted into the pair of legs of the U-shaped main body 52a from the opening to hold the external cable 7. The external cable 7 connected to the printed wiring board 5 in the next stage is inserted into the pair of legs of the U-shaped main body 52a from the opening of the holder element 52 mounted in the next stage to hold the external cable 7 therebetween.

As described above, by sequentially sandwiching the external cable 7 between the holder elements 52, the external cable 7 is arranged and wired in the rear chamber 12, and then the cable introduction notch of the rear upper cover 40-2. Therefore, even if the rear upper cover is removed and the cable connector is removed from the printed wiring board after maintenance and inspection of the printed wiring board, the outer cable routed to the uppermost layer remains on the uppermost printed wiring board. It suffices to connect them in a supported order such as plugging in, and an erroneous connection between the external cable and the printed wiring board can be prevented.

On the other hand, the rear upper cover 40-2 shown in FIG. 2 can be fitted and fixed to the bottom plate member 10 without being screwed and fixed to the bottom plate member 10. More specifically, a substantially Z-shaped engaging fitting 45 that engages with the rear edge member 16 of the bottom plate member 10 is attached to the inside of the rear plate member 42. Also, attach the female ball carrier to the end surface of the front upper cover 40-1 on the rear upper cover 40-2 side.
Along with mounting 47, a male side ball cage 48 is mounted on the end surface of the rear upper cover 40-2.

Therefore, the rear upper cover 40-2 is lifted to engage the engagement fitting 45 with the rear edge member 16 of the bottom plate member 10, and the male side ball catch 48 of the rear upper cover 40-2 is attached to the front upper cover 40-1. The rear upper cover 40-2
Fits on the bottom plate member 10.

[0043]

As described above, according to the present invention, the inside of the metal housing is divided into the front chamber and the rear chamber by the partition plate, the printed wiring board is mounted in the front chamber, the front upper cover and the rear chamber are mounted in the front chamber. The rear upper cover is fitted in each chamber, and the external cable wired in the rear chamber is pulled out to the outside through the cable introduction notch. The radio waves emitted from the printed wiring board are emitted to the outside of the housing. It has the effect of being less afraid.

Further, since the upper cover is divided into the front and rear covers, it is easy to perform maintenance and inspection work because the lightweight and small rear upper cover only needs to be removed for maintenance and inspection of the printed wiring board. Have an effect.

On the other hand, according to the second aspect of the present invention, it is possible to prevent the external cable from being erroneously connected to the printed wiring board during maintenance and inspection of the printed wiring board.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention in a separated form.

FIG. 2 is a diagram of another embodiment of the present invention.

FIG. 3 is a detailed view of a holder element

FIG. 4 is an external view of an embodiment of the present invention.

FIG. 5 is a rear perspective view of a conventional example.

[Explanation of symbols]

1, 10 Bottom plate member 2 Top cover 3 Front cover 5 Printed wiring board 6 Connector 7 External cable 8 Cable connector 11 Front room 12 Rear room 20 Partition plate 21 Window 30 Shelf with rails 31 Backboard 32 Shelf edge frame 40-1 Front upper Cover 40-2 Rear top cover 41 Notch for cable introduction 42 Rear plate member 50 Cable holder 51 Trunk member 52 Holder element

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location 7165-5B G06F 1/00 320 E

Claims (2)

[Claims] 1. A desk-top electronic device in which at least a plurality of printed wiring boards are housed in a metal casing, a box-shaped bottom plate member (10) having an opening at the top, and a bottom edge portion on the bottom surface of the bottom plate member (10). , The side edge is the bottom plate member
The bottom plate member is closely attached to the left and right side plates (15) of (10).
It is fixed vertically to (10) and the upper part of the bottom plate member (10) is located above the front chamber.
(11) with a partition plate (20) for partitioning into the rear chamber (12) and a rail housed in the front chamber (11) so as to open in the rectangular window (21) of the partition plate (20) By inserting the shelf (30) and each rail from the window (21) side,
Printed wiring board to be inserted in multiple stages on the shelf with rails (30)
(5) and the connector (6) mounted on the rear side edge of the printed wiring board (5) to connect the printed wiring board (5) to the rear chamber (12). A plurality of external cables (7) that are pulled out to the outside, and the left and right side plate members are detachably attached to the bottom plate member (10) so as to be in close contact with the side plates (15) of the bottom plate member (10), and the front chamber (1
Front upper cover (40-1) that forms the upper surface and left and right side surfaces of 1)
A front cover (3) that is detachably attached to the front side of the front upper cover (40-1) and closes the front of the front chamber (11), and a lower edge portion of the rear plate member (42). Cable entry notch (4
1), the left and right side plate members are side plates (15) of the bottom plate member (10).
Detachably attached to the bottom plate member (10) so that
A desk-top electronic device structure comprising: a rear chamber (12); an upper surface, left and right side surfaces, and a rear upper cover (40-2) forming a rear surface. 2. A trunk member (51) fixed to the bottom of a bottom plate member (10) so as to be erected and a trunk member (51) in a multi-tiered manner so as to sandwich each external cable (7). A cable holder (50) comprising a plurality of holder elements (52) to be mounted is mounted in the rear chamber (12).
Described tabletop electronics structure.