JPH0888480A - Cabinet of electronic equipment - Google Patents

Abstract

PURPOSE: To achieve the sufficient strength of a cabinet even if the thickness of side plates are made thin by attaching reinforcing plates to front face edge plates and rear face edge plates of the side plates and installing shelf mounting members on inside areas of the side plates. CONSTITUTION: A front reinforcing plate 33 is formed on an inside area of a front face edge plate 31 by welding. In the same way, a rear reinforcing plate is formed on an inside area of a rear face edge plate 32. Then, a shelf mounting section 35 which has a specified longitudinal length and is shallow and nearly recess-shaped when it is viewed from the top is formed and is secured on an inside area of a side plate 30-1 by welding. Screw holes 3 to screw bolts for shelf mounting in are formed in a front-side bent section 35A vertically in a line and at equal pitches. By making the cabinet of a shallow box structure, the strength of the cabinet can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet of an electronic device in which box-shaped shelves containing electronic components are mounted in multiple stages.

[0002]

2. Description of the Related Art FIG. 11 is a perspective view showing a conventional cabinet in a separated form, and FIG. 12 is a sectional view showing the conventional cabinet.
13 is a perspective view of a main part of a conventional cabinet.

In the figure, reference numeral 1 is a box-shaped shelf having front surfaces opened, which accommodates electronic components (for example, printed wiring boards) in parallel. The shelf 1 has the right and left side edges on the front side.
The left and right side plates are bent outward at right angles to provide fixing plate members, and the fixing plate members are fixed to the cabinet by using bolts 2.

A cabinet of a conventional electronic device in which the shelves 1 are mounted in multiple stages includes a pair of left and right side plates 10-1 and 10-2, a bottom plate 21 that connects and closes lower portions of the side plates 10-1 and 10-2, and side plates. 10-1,1
A top plate 22 that connects and closes the upper part of 0-2, a door 25 that is openably and closably attached to the front surface, a rear cover 26 that closes the rear surface, and a pedestal 20 in which members having a U-shaped cross section are welded in a frame shape. ,,.

The side plate 10-2 is formed by bending the front and rear side edges of a vertically long rectangular metal plate inward in a U shape in plan view.
And a rear edge plate 12 is provided. Furthermore, this front edge plate 11
Shelf mounting plate 13
The shelf mounting plate 13 is provided with the screw holes 3 in a vertical line, and the bolts 2 for mounting the shelf 1 are screwed into the screw holes 3 to mount the shelf 1 in the cabinet.

Further, the bent front end side of the rear edge plate 12 is bent at a right angle to provide a rear mounting plate 14, and a screw hole is provided in the rear mounting plate 14, and the screw hole is used to make a cable holder or the like. Is attached to the cabinet.

The lower edge of the side plate 10-2 is bent inward at a right angle to provide a lower edge plate 16, and the upper edge of the side plate 10-2 is bent inward at a right angle to provide an upper edge plate 15. . The front edge plate
Between the upper end surface of 11 and the front end surface of the upper edge plate 15, and between the upper end surface of the rear edge plate 12 and the rear end surface of the upper edge plate 15, each has a predetermined width (slightly smaller than the thickness of the fastening plate described later). Large width) G
Is provided.

Similarly, the lower end surface of the front edge plate 11 and the lower edge plate
A gap G having a predetermined width (a width slightly larger than the thickness of the fastening plate described later) is provided between the front end faces of the 16 and between the lower end face of the rear edge plate 12 and the rear end face of the lower edge plate 16. ing.

The other side plate 10-1 has a shape symmetrical to the side plate 10-2 described above. The rear edge plate 12 of each of the side plates 10-1 and 10-2 has screw holes arranged in a vertical line to form a rear cover.
The 26 is attached using bolts.

The bottom plate 21 has an edge plate formed by bending the four sides of a rectangular principal surface plate upward at right angles. Then, a pair of strip-shaped front fastening plates 21A are provided by extending left and right parts of the front edge plate respectively upward.

The front fastening plate 21A is fitted into the above-mentioned gap G provided in the lower portion of the side plates 10-1 and 10-2, and comes into close contact with the back side of the front edge plate 11. A pair of strip-shaped rear fastening plates 21B are provided by extending left and right portions of the rear edge plate respectively upward.

The rear fastening plate 21B is fitted in the above-mentioned gap G provided in the lower part of the side plates 10-1 and 10-2, and comes into close contact with the rear surface side of the rear edge plate 12. The top plate 22 has an edge plate formed by bending four sides of a rectangular main surface plate at right angles downward.

A pair of strip-shaped front fastening plates 22A are provided by extending left and right parts of the front edge plate downwardly. The front fastening plate 22A is fitted in the above-mentioned gap G provided in the lower portion of the side plates 10-1 and 10-2 and comes into close contact with the back side of the front edge plate 11.

Further, a pair of strip-shaped rear fastening plates 22B are provided by extending left and right parts of the rear edge plate respectively downward. The rear fastening plate 22B is fitted into the above-mentioned gap G provided in the lower portion of the side plates 10-1 and 10-2, and comes into close contact with the rear surface side of the rear edge plate 12.

The side plate 10-1 and the side plate 10-2 are arranged to face each other,
After inserting the front fastening plate 21A and the rear fastening plate 21B of the bottom plate 21 into the corresponding gaps G, respectively, the front edge plate 11 and the rear edge plate
Bolts are fitted into the holes 11a provided in the holes 12, respectively. Then, the screw holes 21a provided in the front fastening plate 21A and the rear fastening plate 21B,
Screw the bolts to 21b and attach the bottom parts of the side plates 10-1 and 10-2 to the bottom plate.
It is connected at 21.

Further, the front fastening plate 22A and the rear fastening plate of the top plate 22
22B are inserted into the corresponding gaps G, and then bolts are inserted into the holes provided in the front edge plate 11 and the rear edge plate 12, respectively. Then, bolts are screwed into the screw holes 22a and 22b provided in the front fastening plate 21A and the rear fastening plate 21B, and the side plates 10-1, 10-
The top of 2 is connected by the top plate 22.

A rear cover made of a metal plate after the side plates 10-1 and 10-2, the bottom plate 21 and the top plate 22 are combined as described above.
The rear cover 26 is attached to the cabinet by bolts, and the rear cover 26 is aligned with the rear surface of the cabinet and closely adheres to the rear edge plate 12 of each of the side plates 10-1 and 10-2.

The door 25 has a shallow box shape. The door 25 is mounted on the cabinet so as to be slidable on one longitudinal edge plate through a slidable means (for example, a hinge). The cabinet is placed on the pedestal 20 fixed to the floor by the anchor bolts, the bolt is inserted into the hole provided in the bottom plate 21 and screwed into the screw hole of the pedestal 20, thereby fixing the cabinet to the floor. .

[0019]

In the conventional cabinet, as described above, a part of the bottom plate and the top plate is bent and
A rear fastening plate is provided, and the side plate and the bottom plate and the side plate and the top plate are fixed to each other through the front and rear fastening plates.

Therefore, it is necessary to increase the thickness of the front and rear fastening plates (that is, the thickness of the bottom plate and the top plate) to increase the strength of the front and rear fastening plates. For this reason, the conventional cabinet has a problem that the weight of the bottom plate and the top plate is large.

Further, the front and rear fastening plates are fitted in the gaps between the side plates, and are closely connected to the front edge plate or the rear edge plate for connection. In order to increase the connection strength, it is required to increase the width of the front and rear fastening plates, and accordingly, the widths of the front and rear edge plates are increased, resulting in a heavy side plate. was there.

On the other hand, since the door has a large shape equal to the front shape of the cabinet, warping occurs unless the plate thickness of the door is increased, and a gap is generated between the door and the cabinet body when the door is closed. There was a point.

Further, since the rear cover has a large shape equal to the back surface of the cabinet, there is a problem that it is difficult to handle and it is difficult to attach and detach it. The present invention has been made in view of the above points, and an object thereof is to provide a lightweight and low-cost electronic device cabinet.

Another object of the present invention is to provide a cabinet door in which the occurrence of warpage is suppressed and a rear cover of the cabinet which is easy to attach and detach.

[0025]

In order to achieve the above object, the present invention is directed to a cabinet of an electronic apparatus in which box-shaped shelves for housing electronic components are mounted in multiple stages, as shown in FIG. Bend the front and rear side edges of the rectangular metal plate of
, A pair of side plates 30-1 and 30-2 having a left-right symmetrical structure in which rear edge plates 32 are respectively provided on the rear side, a front reinforcing plate 33 welded and attached to the front edge plate 31, and a rear edge plate. A rear reinforcing plate 34 welded to and attached to 32 is provided, and a shelf mounting member 35, which is vertically grooved and welded to the inner surface side of each of the side plates 30-1 and 30-2 in a plan view.

Further, each of the main plate portion 41 and the main plate portion 41
A pair of side plates 30-1 that are frame-shaped and are arranged opposite to each other in a frame shape having an edge plate 42 whose sides are bent upward at a right angle, and an upper edge plate part 43 whose upper edges are bent inward at a right angle. , 30-
The bottom plate 40 welded to the side plates 30-1 and 30-2 so as to connect the lower part of 2, the main plate portion 51, the edge plate 52 in which each of the four sides of the main plate portion 51 is bent downward at a right angle, and the edge. Each of the side plates 30-1 and 30-2 has a frame shape formed by a lower edge plate portion 53 in which the lower edges of the plates 52 are bent inward at a right angle, and the side plates 30-1 and 30-1 are connected so as to connect the upper portions of a pair of side plates 30-1 and 30-2 facing each other. , 30-2 Top plate welded to
With 50.

Further, it is a shallow box shape composed of a main plate portion and an edge plate in which four sides of each of the main plate portions are bent inward at right angles, and is slidable on the front side of a pair of side plates 30-1 and 30-2. The door 60 to be mounted and the rear cover detachably mounted to the rear surface side of the pair of side plates 30-1 and 30-2 are provided.

As illustrated in FIG. 6, the engagement notch 33A provided at substantially the center of the front edge plate 31 of the side plate 30-1 or the front reinforcing plate 33 attached to the front edge plate 31 is engaged with the engagement notch 33A. An engaging metal fitting 70 having an elastic lock piece 71 attached to a front edge is attached to a substantially central portion of a longitudinal edge plate of the door so as to face the notch 33A.

The engaging metal fitting 70 has a lock piece 71 when the door 60 is closed.
Is engaged with the engagement notch 33A. As illustrated in FIG. 7, the rear cover has a structure in which each is removable, and is composed of a plurality of vertically separated rear covers 80.

As illustrated in FIG. 8, each of the separated rear covers 80 includes a main face plate 81, a tongue-shaped edge plate 82 formed on an upper edge of the main face plate 81, and another main face plate 81. It has a shallow box shape including an edge plate 83 formed on three side edges, and a tongue-shaped edge plate 82.
Is inserted into the inside of the lower edge plate 83 of the rear cover 80 attached to the upper stage, or is in close contact with the rear surface of the edge plate of the top plate 50. The rear edge plate 32 is closely contacted with the rear surface of the rear edge plate 32, and the lower edge plate 83 of the rear cover 80 at the bottom stage
Is closely attached to the rear surface of the edge plate 42 of the bottom plate 40.

Further, as illustrated in FIG. 8, a strip-shaped elastic conductive member is provided inside each edge plate 83 of the rear cover 80.
90 is attached. As illustrated in FIG. 10, a conductive belt-shaped elastic magnet member 95 is attached to the inside of at least the left and right side edges and the lower side edge of the rear cover 80.

[0032]

According to the present invention, the side edge of the side plate on the front side has a U-shaped front edge plate with the front reinforcing plate attached thereto, and the rear side edge has the rear reinforcing plate attached thereto. Since it has a U-shaped rear edge plate and is equipped with a shelf mounting member that is vertically welded to the inner surface side and is approximately groove-shaped in plan view, each side plate is sufficiently thin even if it is thin. Has great strength.

Further, since the bottom plate and the top plate have a frame-shaped structure, they have a sufficiently large strength even if the plate thickness is made thin. Further, the bottom plate is welded and connected to the lower parts of the pair of side plates arranged opposite to each other, and the top plate is welded and connected to the upper part of the side plates.

Therefore, the cabinet according to the present invention is stronger and lighter than the cabinet of the conventional structure assembled by using the bolts. On the other hand, when the door is closed, the engaging metal fitting provided in the central portion of the vertical edge plate of the door engages with the engaging notch provided in the front edge plate or the front reinforcing plate of the side plate.

Therefore, the warp of the door is corrected, which reduces the gap between the door and the front edge plate of the side plate.
Since the rear cover has a structure in which it is vertically divided into a plurality of pieces, each of the rear covers is lightweight.

Therefore, the work of attaching and detaching the rear cover is easy. Further, by forming each rear cover into a shallow box shape, the strength is increased and the weight is reduced even if the plate thickness is thin.
In addition, since the occurrence of warpage is suppressed, the rear surface of the side plate easily comes into close contact with the rear surface of the edge plate.

On the other hand, by attaching a band-shaped elastic rubber-like conductive member to the inside of each edge plate of the rear cover, the space between the rear cover and the side plate and between the rear cover and the bottom plate are shielded. The emission of unnecessary electromagnetic waves to the outside of the cabinet and the intrusion of unnecessary electromagnetic waves into the cabinet are suppressed.

Further, by replacing the strip-shaped elastic conductive member with a conductive strip-shaped elastic rubber-like magnet member, it is not necessary to bolt the rear cover to the side plate.

Therefore, not only the entry and exit of unnecessary electromagnetic waves are suppressed, but also the work of attaching and detaching the rear cover is facilitated.

[0040]

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

FIG. 1 is a perspective view showing the present invention in a separated form,
2 is a front perspective view of the present invention, FIG. 3 is a partially cutaway perspective view of the door, FIG. 4 is a perspective view showing the essential parts of the door, (A) is an upper perspective view, and (B) is a lower perspective view. FIG.

FIG. 5 is a view for explaining the door lock mechanism.
(A) is a cross-sectional view before locking, (B) is a cross-sectional view after locking, FIG. 6 is a cross-sectional view showing the important points of the door, (A) is a view before locking,
(B) is after locking.

FIG. 7 is a rear perspective view of the present invention, FIG. 8 is a perspective view of a rear cover, FIG. 9 is a sectional view of an embodiment of the rear cover, and FIG. 10 is a sectional view of another embodiment of the rear cover. is there.
In the figure, 40 is a rectangular main plate portion 41, and an edge plate 42 provided by bending each of the four sides of the main plate portion 41 upward at a right angle,
It is a bottom plate made of a metal plate (for example, a steel plate) having a frame-shaped structure, and an upper edge plate portion 43 formed by bending the upper edges of the edge plates 42 inwardly at right angles.

The main plate portion 41 of the bottom plate 40 is provided with holes for anchor bolts (four in the figure) for fixing the cabinet to the floor. Reference numeral 50 denotes a rectangular main plate portion 51, an edge plate 52 provided by bending four sides of the main plate portion 51 downward at right angles, and an edge plate 52.
The top plate is made of a metal plate (for example, a steel plate) having a frame-shaped structure, which includes a lower edge plate portion 53 formed by bending the lower edges of the respective 52 inwardly at right angles.

Reference numeral 30-1 denotes a vertically elongated metal plate (for example, a steel plate) in which front and rear side edges are each bent inward in a U shape,
It is a side plate provided with a front edge plate 31 on the front side and a rear edge plate 32 on the rear side.

The upper end of the inner member of the front edge plate 31 of the side plate 30-1 is removed by a length equal to the height of the top plate 50 to form an upper cutout 31A.
And a lower notch 31B is provided by removing the lower end of the inner member by a length equal to the height of the bottom plate 40.

The upper end of the inner member of the rear edge plate 32 of the side plate 30-1 is removed by a length equal to the height of the top plate 50 to provide an upper cutout 32A, and the lower end of the inner member is a bottom plate. A lower notch 32B is provided by removing a length equal to the height of 40.

Reference numeral 33 denotes a front reinforcing plate that is welded and attached to the inside of the front edge plate 31, and 34 is welded to the inside of the rear edge plate 32.
It is an attached rear reinforcing plate. Each upper cutout 31A, 32
The upper end surface of A is an end surface that supports the lower surface of the lower edge plate portion 53 of the top plate 50, and the lower end surfaces of the lower cutouts 31B and 32B are the bottom plate.
It is an end face that abuts the upper surface of the upper edge plate portion 43 of 40.

Reference numeral 35 denotes a shelf mounting member having a predetermined vertical length (height dimension obtained by subtracting the height of the bottom plate and the height of the bottom plate from the height of the side plate 30-1) having a substantially groove shape with a shallow plan view. . The shelf mounting member 35 is vertically welded and fixed to the inner surface of the side plate 30-1. Front bent portion of this shelf mounting member 35 (vertically long bent portion parallel to the front of the cabinet)
The 35A has screw holes 3 into which bolts for attaching the shelves are screwed, which are arranged in a vertical row at equal pitches.

Reference numeral 30-2 is the other side plate which is formed symmetrically with the above-mentioned side plate 30-1. A pair of side plates facing each other
The bottom plate 40 is fitted into the lower openings of the 30-1 and 30-2, the left and right edge plates 42 of the bottom plate 40 and the side plates are welded together, and the lower part of the pair of side plates 30-1 and 30-2 is inserted through the bottom plate 40. Are connected.

Further, a pair of side plates 30-1 and 30-2 arranged opposite to each other.
The top plate 50 is fitted into the upper opening of the, and the left and right edge plates 52 of the top plate 50 and the side plates are welded together, so that the tops of the pair of side plates 30-1 and 30-2 are top plates.
It is connected through 50.

A door 60 is slidably mounted on the front side of the pair of side plates 30-1 and 30-2. 80 is a pair of side plates 30-1, 3
0-2 is a rear cover that is detachably attached to the rear surface side, and the rear opening of the cabinet is covered by attaching a plurality of (three in the figure) rear covers 80.

The above-mentioned shelves, which are mounted in multiple stages in the cabinet of the electronic device, have a box shape with an open front surface for accommodating electronic components (for example, printed wiring boards) in parallel. Shelves
(See FIG. 12) has fixing plate members formed on the left and right side edge portions on the front surface side and bent outward at a right angle.

In the shelf, with the back surface of the fixing plate member in close contact with the front bent portion 35A of the shelf mounting member 35, a bolt is inserted into the hole of the fixing plate member and screwed into the screw hole 3 of the shelf mounting member 35. It is mounted on the cabinet by wearing it.

The structure of the door which is slidably mounted on the front side of the cabinet will be described in detail below with reference to FIGS. 2 to 6. As shown in FIG. 3, the door is a shallow box-shaped single-opening type door 60 composed of a main plate portion and edge plates in which four sides of the main plate portion are bent inward at right angles to each other. Two
As illustrated in FIG. 2, the shallow box-shaped first door 60-1 and the second door 60-2, each of which includes a main plate portion and an edge plate in which four sides of the main plate portion are bent inward at right angles, respectively. It is one of the double door type doors.

Reference numeral 75 denotes a lower decorative plate formed by welding a metal plate so that it has a substantially trapezoidal plan view. The lower decorative plate 75 is a bottom plate.
It is screwed and fixed to the front side of 40. Reference numeral 76 is an upper decorative plate formed by welding a metal plate so that it has a substantially trapezoidal shape in plan view. The upper decorative plate 76 is screwed and fixed to the front surface side of the top plate 50.

As shown in FIG. 4, at the corner of the upper edge plate on the sliding shaft side of the door 60, a fixing pin 63 whose upper end is fitted in the hole 76A of the upper decorative plate 76 is provided. A movable pin 61 whose lower end is fitted into the hole 75A of the lower decorative plate 75 is provided at a corner of the lower edge plate on the sliding shaft side of the door 60 so as to coincide with the axis of the fixed pin 63. The movable pin 61 is constantly urged downward by a compression coil spring 62.

Therefore, the door 60 is slidably mounted on the front side of the cabinet via the fixed pin 63 at the upper portion and the movable pin 61 at the lower portion. On the other hand, as shown in FIGS. 2 and 3, a rod 65 is provided along the vertical edge plate on the opening side of the door 60.

Plate members are horizontally fixed to the upper and lower portions of the rod 65, and a lock pin 67 is provided vertically to the tip of the plate member. On the other hand, on the upper decorative plate 76 and the lower decorative plate 75, engaging fittings 79 having horizontal hook-shaped plate portions are attached at positions facing the lock pins 67.

Further, a square window is provided on the main face plate of the door 60, and a square handle 66 fitted to the square window is provided. This handle
Reference numeral 66 denotes a rotary operation on the front side of the door 60. Handle 66
The rod so that one of the vertical edges holds the rod 65.
Sticked to 65. Therefore, when the handle 66 is rotated, the rod 65 is rotated.

In order to lock the door 60, first, the door 60 is closed with the fixed pin 63 and the movable pin 61 as an axis, and then the front side of the handle 66 is pushed to rotate it, and the handle 66 is fitted into the rectangular window.
Rod until the surface of the handle 66 and the surface of the main plate of the door 60 are aligned.
Rotate 65.

When the rod 65 rotates, the lock pin 67 engages with the hook-shaped plate portion of the engaging fitting 79. Therefore, the door 60 is locked. Note that the rod 68 is constantly urged in the direction in which the lock pin 67 engages with the engagement fitting 79 by the spring 68 attached to the inside of the door 60, so that the lock is not released by vibration or the like. .

To open the door 60, insert your finger into the rectangular window and pull the handle.
A finger is hooked on the inside of 66 to open the handle 66 to the outside, whereby the rod 65 rotates and the lock pin 67 and the engagement fitting 79 are disengaged. Therefore, the door 60 can be opened.

At this time, since the stopper plate 66A provided on the handle 66 contacts the inner surface of the door 60, the handle 66 is prevented from rotating more than necessary. By the way, as shown in FIG. 6, a rectangular engaging notch 33A having an opening on one side is provided at a substantially central portion of the front reinforcing plate 33.

Further, an engaging metal fitting 70 made of an elastic metal plate having an angle shape in plan view is attached to a substantially central portion of the vertical edge plate on the sliding shaft side of the door 60. A lock piece 71 warped like a tongue is provided at the front end side edge of the engagement fitting 70, and when the door 60 is closed, the lock piece 71 of the engagement fitting 70 becomes the engagement cutout 33A of the front reinforcing plate 33. I'm trying to lock myself in.

The engaging metal fitting 70 is the engaging notch 33 of the front reinforcing plate 33.
When it is attached to A, the central part of the vertical edge plate of the door 60 is
It is pulled toward the 33 side, that is, the front edge plate 31 side. Therefore,
The warp of the door 60 is corrected, and the end face of the vertical edge plate of the door 60 and the front edge plate
The gap between the face and 31 is reduced.

The rear cover will be described below with reference to FIGS. 7 to 10. The rear cover detachably attached to the back side of the cabinet by screw means or the like is not a single metal plate, but a plurality of (three in the figure) rear covers separated vertically as shown in FIG. 7. Consists of.

Each rear cover 80 is a rectangular plate-shaped metal plate. Therefore, each rear cover 80 is light in weight, which facilitates the attachment / detachment work. However, the shallow box-shaped structure as described below increases the strength and reduces the weight even if the plate thickness is thin. In addition, since the occurrence of warpage is suppressed, the rear surface of the side plate easily comes into close contact with the rear surface of the edge plate.

As shown in FIGS. 8 and 9, each rear cover 80 includes a main face plate 81, a tongue-shaped edge plate 82 formed by bending the main face plate 81 on the upper edge of the main face plate 81 inward, and another main face plate 81. Is a shallow box-like shape composed of three side edges of the edge plate 83 formed by bending the inside edges at right angles.

The tongue-shaped edge plate 82 is a rear cover 80 to be mounted on the upper stage.
It is sized and shaped so that it is inserted inside the lower edge plate or closely contacts the rear surface of the edge plate of the top plate 50. Left and right edge plates 83
Is sized and shaped so as to be in close contact with the rear surface of the rear edge plate 32 of the side plates 30-1 and 30-2.

The lower edge plate 83 of the lowermost rear cover 80 is sized and shaped so as to be in close contact with the rear surface of the edge plate of the bottom plate 40. A strip-shaped tongue piece 85 that is inserted from the upper edge of the rear cover 80 into a slit 86 provided in the lower edge of the upper rear cover 80 is provided.

The tongue piece 85 is fixed to the main face plate 81 such that the lower part is welded to the inside of the main face plate 81 and the upper part penetrates the bent portion of the tongue-shaped edge plate 82. Daruma holes 91 are provided in the upper part of the main face plate 81 near the left and right edge plates 83. Also, the main plate 81
Holes 92 for inserting the necks of the bolts 94 are provided in the lower portions near the left and right edge plates 83.

The daruma hole 91 engages with the neck portion of the stepped bolt 93 hung on the rear edge plate 32 to suspend the upper portion of the rear cover 80 from the rear edge plate 32. The bolt 94 is inserted into the hole 92 and screwed into the screw hole provided in the rear edge plate 32 to remove the rear cover 80.
The lower part of is fixed to the rear edge plate 32.

On the other hand, a band-shaped elastic conductive member 90 (for example, an object in which rubber and metal powder are mixed) is attached to the inside of the left and right edge plates 83 and the inside of the lower edge plate 83. . With this structure, the tongue-shaped edge plate 82 is attached to the upper rear cover 80.
The tongue 85 and insert it inside the
Engage with the slit 86 of 80, and insert the Daruma hole 91 into the stepped bolt 93.
When the bolt 94 is screwed on, the left and right conductive members 90 are compressed and come into close contact with the rear edge plate 32. Further, the conductive member 90 mounted on the upper rear cover 80 is compressed and comes into close contact with the tongue-shaped edge plate 82.

As a result, the rear cover 80 and the side plates 30-1, 30-
Since the gap between the two is almost eliminated and the two are electrically conductive and shielded, the emission of unnecessary electromagnetic waves to the outside of the cabinet and the intrusion of unnecessary electromagnetic waves into the cabinet are suppressed.

As shown in FIG. 10, when a conductive belt-shaped elastic magnet member is attached instead of the conductive member 90, the daruma hole 91 and the bolt 94 are not used.
The rear cover 80 can be detachably attached to the rear surface of the cabinet.

[0077]

Since the present invention is constituted as described above, it has the following effects.

By reinforcing the front edge plate and the rear edge plate of the side plate respectively, and by additionally attaching the shelf mounting member inside the side plate, it is sufficiently large even if the side plate is thin. Have strength.

Further, since the bottom plate and the top plate have a frame-shaped structure, they have a sufficiently large strength even if the plate thickness is made thin. Further, the bottom plate is welded and connected to the lower parts of the pair of side plates arranged opposite to each other, and the top plate is welded and connected to the upper part of the side plates.

Therefore, the cabinet according to the present invention is strong and lightweight. Also, when the door is closed, the engaging metal fitting provided at the center of the longitudinal edge plate of the door is engaged with the engaging notch provided on the front edge plate of the side plate or the front reinforcing plate, so that the door is closed. The warp is corrected and the gap between the door and the front edge plate of the side plate is reduced.

Since the rear cover has a structure in which it is vertically divided into a plurality of pieces, each of the rear covers is light in weight, and the work for attaching and detaching the rear cover is easy. In addition, by making each rear cover a shallow box shape, the strength is increased, the weight is light even if the plate thickness is thin, the occurrence of warpage is further suppressed, and the side plates are easily brought into close contact with the rear surface of the edge plate. .

By attaching a band-shaped elastic rubber-like conductive member to the inside of each edge plate of the rear cover, the space between the rear cover and the side plate and between the rear cover and the bottom plate are shielded.
Emission of unnecessary electromagnetic waves outside the cabinet and invasion of unnecessary electromagnetic waves into the cabinet are suppressed.

By replacing the band-shaped elastic conductive member with a conductive band-shaped elastic rubber-like magnetic member, it is not necessary to bolt the rear cover to the side plate, and the rear cover can be eliminated. It becomes easier to attach and detach.

[Brief description of drawings]

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

FIG. 2 is a front perspective view of the present invention.

FIG. 3 is a partially cutaway perspective view of a door.

FIG. 4 is a perspective view showing a main part of a door, (A) is an upper perspective view, and (B) is a lower perspective view.

5A and 5B are diagrams illustrating a door locking mechanism, in which FIG. 5A is a sectional view before locking and FIG. 5B is a sectional view after locking.

FIG. 6 is a cross-sectional view showing a main part of the door, (A) is a view before locking and (B) is a view after locking.

FIG. 7 is a rear perspective view of the present invention.

FIG. 8 is a perspective view of a rear cover.

FIG. 9 is a cross-sectional view of an embodiment of a rear cover.

FIG. 10 is a sectional view of another embodiment of the rear cover.

FIG. 11 is a perspective view showing a conventional example in a separated form.

FIG. 12 is a sectional view of a conventional example.

FIG. 13 is a perspective view of a main part of a conventional example.

[Explanation of symbols]

1 shelf 10-1,10-2,30-1,30-2
Side plate 11,31 Front edge plate 12,32 Rear edge plate 13 Shelf mounting plate 20 Frame 21,40 Bottom plate 22,50 Top plate 33 Front reinforcing plate 34 Rear reinforcing plate 31A, 32A Top notch 31B, 32B Bottom notch 35 Shelf mounting member 33A Engagement notch 25,60 Door 60-1 First door 60-2 Second door 61 Movable pin 63 Fixed pin 65 Rod 66 Handle 67 Lock pin 70 Engagement bracket 71 Lock piece 75 Base plate 76 Top plate 79 Engagement fittings 26,80 Rear cover 82 Tongue-shaped edge plate 83 Edge plate 85 Tongue piece 86 Slit 90 Conductive member 95 Magnet member

Claims (6)

[Claims] 1. A box-shaped shelf containing electronic components,
In a cabinet of electronic devices to be mounted in multiple stages, the front and rear side edges of a vertically long rectangular metal plate are bent inward in a U shape to provide a front edge plate on the front side and a rear edge plate on the rear side. A pair of left and right symmetrical side plates, a front reinforcing plate welded and attached to the front edge plate, a rear reinforcing plate welded and added to the rear edge plate, and an inner surface side of each side plate. It is welded vertically,
A shelf mounting member having a substantially groove shape in a plan view, a main plate portion, an edge plate formed by bending each of the four sides of the main plate portion upward at a right angle, and an upper edge of each edge plate being bent at a right angle inward. A bottom plate that is welded to the side plates so as to connect the lower parts of the pair of side plates that are opposed to each other, and the main plate part and each of the four sides of the main plate part are perpendicular to each other. A frame shape composed of an edge plate bent downward and a lower edge plate part formed by bending the lower edges of the edge plates inward at right angles, and connecting the upper parts of the pair of side plates facing each other. A shallow box shape composed of a top plate welded to the side plates, a main plate part, and an edge plate formed by bending each of the four sides of the main plate part inwardly at right angles. A door that is slidably mounted on the front side and a detachably mounted rear side of the pair of side plates. Cabinet of the electronic device, characterized in that the rear cover includes a. 2. An engagement notch provided in a substantially central portion of a front edge plate of a side plate or a front reinforcing plate attached to the front edge plate, and a longitudinal direction of a door facing the engagement notch. An engaging metal fitting attached to an approximately central portion of the rim plate and having an elastic lock piece at a tip side edge thereof, the engaging metal fitting is configured such that when the door is closed, the lock piece becomes the engagement cutout. The cabinet of the electronic device according to claim 1, wherein the cabinet is detachably attached. 3. The rear cover is composed of a plurality of upper and lower separated rear covers, and each of the rear covers is detachably attached to the rear side of a pair of side plates. A cabinet of the electronic device according to claim 1 or 2. 4. Each of the separated rear covers comprises:
A main face plate and a tongue-shaped edge plate formed on an upper edge of the main face plate,
It has a shallow box shape consisting of edge plates formed on the other three side edges of the main face plate, and the tongue-shaped edge plate is inserted inside the lower edge plate of the rear cover mounted on the upper stage. Or, the edge plates of the top plate are in close contact with the rear surface, and the left and right edge plates are in close contact with the rear surfaces of the side plates, and the lower edge of the bottom rear cover is The cabinet for an electronic device according to claim 3, wherein the cabinet is closely attached to the rear surface of the edge plate of the bottom plate. 5. The cabinet of the electronic device according to claim 4, wherein a strip-shaped elastic conductive member is attached to the inside of each edge plate of the separated rear cover. 6. A conductive belt-shaped elastic magnet member is attached to at least the inside of the left and right side edges and the lower side edge of the separated rear cover. 4. The electronic device cabinet according to item 4.