JPH07123195B2 - Electronic device housing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] An electronic device configured by accommodating a shelf in which a large number of electronic circuit packages are mounted in parallel in a single housing,
In particular, regarding the new structure of the housing used for it, the purpose is to provide a housing structure with improved structural strength without increasing the weight, and a predetermined width that extends in the lateral direction along the front and rear sides, respectively. And a rectangular top plate that forms a vertical contact surface and has horizontal contact surfaces of a predetermined width that extend in the depth direction along both left and right sides, and a predetermined width that extends in the height direction along the front and rear sides. And a pair of left and right rectangular side plates forming a horizontal contact surface of a predetermined width that extends in the depth direction along the upper side and a bottom plate having a shape corresponding to the top plate. In the housing structure of the assembled electronic device, the side plate has a shelf mounting metal fitting that extends in a vertical direction in parallel with a position inside the housing by a predetermined distance from the vertical contact surface of the inner wall. Along with The horizontal contact surface is provided with slits across its width, and the left and right side plates are cross-linked with each other by connecting fittings having a pair of left and right first vertical tongues fitted in the slits. The pair of left and right second vertical tongues following the rearwardly projecting horizontal portion forming a part of the connecting fitting welds the respective contact areas in contact with the back surface of the shelf mounting fitting.
When the top plate and the side plate are fixed, the top plate is positioned with its vertical contact surface in contact with the back surface of the bridging portion of the connecting metal fitting, and its horizontal contact surface in contact with the horizontal contact surface of the side plate. The contact areas are welded and fixed to each other.

[Industrial application field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device configured by accommodating a shelf in which a large number of electronic circuit packages are mounted in parallel in a single housing, and more particularly to a novel structure of the housing used therein.

[Conventional technology]

The structure of the conventional housing will be described. As shown in FIG. 7, the main body part includes left and right side plates 42, a top plate 43, and a bottom plate.
It consists of 44 and. A metal plate 41 having a front-facing surface is fixed to the side plate 42 by extending in the height direction on its inner surface, and a large number of shelves mounting holes 41a are provided at an appropriate pitch.

The top plate 43 is placed on the side plate 42 with its lower folded surface 43a in contact with the upper folded surface 42a of the side plate 42, and both are fixed by welding at the portion A in FIG. The bottom plate 44 is also welded and fixed to the side plate 42 by a similar structure, and a box-shaped basic structure having open front and rear surfaces is formed.

A door 51 as shown in FIG. 9 is attached to the front open surface of the basic structure thus configured. Normal,
For the purpose of designing the door 51 such as differentiating the device, the door 51 has four door members 51a which are bent so that a plurality of curved portions are formed on the surface, for example, rounded upper and lower edges. Are arranged side by side, and these are fixed to each other by welding or the like by a lateral connecting fitting 52 to be integrated with each other, as shown in FIG.

Further, at the four corners of the bottom plate 44, by folding the iron plate forming the bottom plate 44, a bag-like portion composed of a folded-back portion 63 and a bottom plate main body 62 orthogonal to each other as shown in FIG. 11 is provided. The tip of a separately prepared stepped bush 61 for a foot is inserted from below into a round hole 64 drilled in, and is in contact with the back surface of the bottom plate body 62. And this bush
As shown in FIG. 12, 61 is positioned so as to be in contact with the end edges of the respective folded-back portions 63 at points 65, and the contact portions are welded and fixed to each other.

[Problems to be Solved by the Invention]

As described above, in the conventional body portion of the housing, the fixing of the top plate 43 and the side plate 42 is performed only through the contact surfaces 43a and 42a of the both, so in order to increase the coupling force. However, it is necessary to increase the plate thickness of the side plate and the top plate and to increase the width of the contact surface, which increases the weight of the entire housing and increases the size of the device.

Further, in the conventional door structure, since it is necessary to provide a space for mounting the connection fitting, a part of the door member cannot be formed into a bag bending structure, and as a result, there is a drawback that the strength is insufficient, There is also a problem that radio waves of the electronic device housed inside leak out from a gap formed at the joint between the door members and interfere with the surroundings.

Further, in the bush for the foot, since the bush and the folded portion of the bottom plate are in contact with each other only at two points, there is a concern that the strength is insufficient to bear the total weight of the device.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art and to provide a housing structure having an improved structural strength without increasing the weight.

[Means for Solving the Problems]

The purpose is to form a vertical contact surface with a predetermined width that extends laterally along the front and rear sides and a horizontal contact surface with a predetermined width that extends in the depth direction along both left and right sides. A pair of left and right rectangles that form a vertical contact surface of a predetermined width extending in the height direction along the front and rear sides and a horizontal contact surface of a predetermined width extending in the depth direction along the top side. A side plate and a bottom plate having a shape corresponding to the top plate are integrally assembled, and the side plate is inside the housing by a predetermined distance from the vertical contact surface of the inner wall. Has a shelf mounting metal fitting extending in a vertical direction in parallel with the horizontal position, and has a slit across the width at the end of the horizontal contact surface, and the left and right side plates are fitted in the slit. A pair of first vertical tongues The pair of left and right second vertical tongues, which are bridged to each other by the connecting metal fittings provided at the ends and which continue to the rearwardly projecting horizontal portion forming a part of the connecting metal fittings, contact the rear surface of the shelf mounting metal fitting. In this state, the contact areas are welded and fixed to each other, and when fixing the top plate and the side plate, the top plate has its vertical contact surface on the back surface of the bridging portion of the connecting fitting, and its horizontal contact surface on the horizontal contact surface of the side plate. Are positioned in contact with each other, and the contact areas are welded and fixed to each other.

The housing structure of the present invention preferably includes a door in which a plurality of door members each having a bag bending portion are arranged in parallel, and one backing plate made of an iron plate is fixed to the back surface of the door member to be integrated.

Further, at the four corners of the bottom plate, bag-shaped portions having folded-back portions of predetermined widths that are folded back at their four sides are formed below the bottom plate body, and close to this, round holes provided in the bottom plate body. It is preferable that the tip of a stepped bush for a foot having a groove on the outer periphery is inserted into the groove, and the edge of the folded portion is engaged with and welded to the groove.

[Action]

According to the present invention, when the main body portion of the housing is formed, the top plate and the both side plates are joined to each other by way of the specially-shaped connecting metal fittings to increase the contact area between the two, so compared with the conventional structure, Large structural strength can be obtained.

Furthermore, a plurality of door members are completely combined with one backing plate.
Since it is fixed, the structural strength is increased, the seal between the door members is perfected, and the leakage of radio waves from the inside of the housing is prevented.

Moreover, when the bush for the foot and the bottom plate are coupled, the folded portion is engaged with the groove provided on the outer peripheral surface of the bush to increase the contact area between the both, so that the fixing is strengthened.

Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments shown in the drawings.

〔Example〕

FIG. 1 shows an exploded perspective view of an embodiment of the main body portion of the housing of the present invention. The members constituting this main body portion include a top plate 4, left and right side plates 2, and a bottom plate 3, as well as a connecting metal fitting 1 for connecting the side plate and the top plate.

The top plate 4 has a rectangular box-like shape with an open bottom, and horizontal contact surfaces 4a are formed on the lower surfaces of both side edges by depth-folded portions of a predetermined width and front and rear edges thereof. Is formed with a vertical contact surface 4b extending in the lateral direction and having a predetermined width.

The side plate 2 forms a vertical contact surface 2b along the front and rear sides thereof with a vertical folding portion having a predetermined width, and also forms a depth horizontal contact surface 2a having a predetermined width along the upper side thereof. A slit 2c that crosses the width is provided at the end of the horizontal contact surface 2a. Further, on the inner surface of the side plate 2, a shelf mounting bracket 5 having a large number of holes formed in parallel on the front surface is vertically fixed at a position separated from the vertical contact surface 2b by a predetermined distance.

The connecting fitting 1 has a horizontal bridging portion 1a having a length corresponding to the distance between the left and right side plates 2, and a pair of first vertical pieces 1b hanging downward are provided at both ends thereof. Further, a pair of L-shaped members 1c protruding rearward from the bridge portion 1a are fixed at a position slightly inside the first vertical piece 1b, and a second vertical piece 1d is formed at the tip thereof.

When assembling the side plates 2 and the top plate 4, first, each first vertical piece 1b of the connecting fitting 1 is inserted into the slit 2c of the corresponding side plate 2 to bridge the side plates 2. In this state, as shown in FIG. 2, the L-shaped member 1c is placed on the end face of the side plate shelf mounting metal fitting 5, and the second vertical piece 1d has a dimensional relationship such that the second vertical piece 1d is in surface contact with the back surface of the metal fitting 5 beforehand. It is set.

As is apparent from FIG. 2, the connecting metal fitting 1 has its first vertical piece 1b brought into surface contact with the back surface of the vertical contact surface 2b of the side plate 2, and further the second vertical piece 1d with the back surface of the shelf mounting metal fitting 5. The side plates 2 are positioned in contact with each other. In this state, the contact areas are welded and fixed to each other.

Next, the top plate 4 changes its horizontal contact surface 4a to the horizontal contact surface 2a of the side plate 2.
The vertical contact surface 4b is brought into contact with the upper surface and the vertical contact surface 4b is brought into contact with the back surface of the bridging portion 1a of the connecting fitting 1 projecting above the horizontal contact surface 2a of the side plate 2 for positioning as shown in FIG. . Then, in this state, the contact areas are welded and fixed to each other.

In this way, the top plate 4 and the side plate 2 can be brought into contact with the mating member that is fixed in a larger area than the conventional one by interposing the connecting fitting 1, so that the connection is strengthened.

The door 6 is attached to the main body of the housing thus completed as usual. As shown in FIG. 3, this door 6
Is formed by arranging a plurality of (in this example, four) door members 6a which are bent around the periphery and have an R portion on the surface edge. These door members 6a are fixed to each other by riveting one backing plate 6b made of an iron plate on the back surface thereof. As a result, the backing plate 6b becomes a structural material, and the strength of the door 6 can be entirely reinforced.
As shown in FIG. 4, the gaps between the door members are shielded, and it is possible to completely seal the radio waves generated from the internal electronic devices.

Next, the bottom plate 3 will be described. Like the above-mentioned conventional bottom plate, the bottom plate 3 has bag-shaped portions formed by folded portions 3a at its four corners as shown in FIG. 5, and is provided on the bottom plate body 3b above it. The tip of the stepped bush 8 for the foot is inserted from below through the formed round hole 3c. This bush 8 is provided with a groove 8a on its outer peripheral surface, and at the position where the tip of the bush is inserted into the round hole 9 and the step contacts the back surface of the bottom plate body 3b, as shown in FIG. The dimensional relationship is set so that the edge of the folded-back portion 3a engages in the groove 8a.
The contact regions between the bush 8 and the bottom plate 3 positioned in this way are welded and fixed to each other. In the case of the present invention, the contact area between the bush 8 and the folded-back portion 3a is not a "point" as in the case of the above-mentioned conventional art but a surface having a certain area, so that the connection between the two is further strengthened. .

〔The invention's effect〕

As described above in detail, according to the present invention, the joint structure of the members constituting the housing is reinforced, and these members are related to each other, so that the strength of the housing can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main body portion of a housing structure of the present invention, FIG. 2 is an enlarged cross-sectional view of a joint between a top plate and a side plate, and FIG. 3 is an exploded perspective view of a door structure of the present invention. 4 is a side sectional view of the same, FIG. 5 is a perspective view showing the relationship between the bag-like portion of the bottom plate of the present invention and the bush for the foot, and FIG. 6 is a sectional view of the joint between the bottom plate and the bush. 7 is an exploded perspective view of a main body portion of a conventional housing structure, FIG. 8 is an enlarged cross-sectional view of a joint portion between a top plate and a side plate, FIG. 9 is an exploded perspective view of a conventional door structure, and FIG. Fig. 11 is a side sectional view of the same, Fig. 11 is a perspective view showing the relationship between the conventional bag-shaped portion of the bottom plate and the bush for the foot, and Fig. 12 is a side sectional view thereof. 1 …… Connecting metal fitting 1a …… Bridge part 1b …… First vertical piece 1c …… L-shaped member 1d …… Second vertical piece 2 …… Side plate 2a …… Horizontal contact surface 2b …… Vertical contact surface 2c …… Slit 3 …… Bottom plate 3a …… Folded part 3b …… Bottom plate body 4 …… Top plate 4a …… Horizontal contact surface 4b …… Vertical contact surface 5 …… Shelf mounting bracket 6 …… Door 6a …… Door member 6b …… Backing plate 8 Bush 8a Groove 9 Round hole

Claims (3)

[Claims] 1. A vertical contact surface (4b) having a predetermined width extending laterally along the front and rear sides, and a horizontal contact surface (4a) having a predetermined width extending in the depth direction along both left and right sides. ) Is formed, and a vertical contact surface (2b) having a predetermined width extending in the height direction along the front and rear sides, and a predetermined depth extending in the depth direction along the upper side. A housing of an electronic device integrally assembled with a pair of left and right rectangular side plates (2) having a horizontal contact surface (2a) having a width and a bottom plate (3) having a shape corresponding to the top plate (4). The side plate (2) has a structure such that the side plate (2) vertically extends in parallel with the inner wall of the side plate (2) at a position inside the housing by a predetermined distance from the vertical contact surface (2b). ) And having a slit across its width at the end of the horizontal contact surface (2a) 2c), the left and right side plates (2) are cross-linked with each other by a connecting fitting (1) having a pair of left and right first vertical tongues (1b) fitted in the slit (2c). A pair of left and right second vertical tongues (1d) following a rearwardly projecting horizontal portion (1c) forming a part of the connecting metal fitting (1) is the shelf mounting hardware (5).
The contact areas are welded and fixed to each other in a state of being in contact with the back surface of the top plate (4) and the side plate (2), and the vertical contact surface (4b) of the top plate (4) is fixed to the connecting fitting. (1)
The horizontal contact surface (4a) is attached to the side plate (2) on the back surface of the bridge part of
The housing structure of the electronic device is characterized in that it is positioned while being in contact with each of the horizontal contact surfaces (2a), and the contact areas are welded and fixed to each other. 2. A door (6) in which a plurality of door members (6a) each having a bag bending portion are arranged in parallel, and a backing plate (6b) made of an iron plate is fixed to the back surface of the door member (6) to be integrated. The housing structure according to claim 1, further comprising: 3. A bottom portion of the bottom plate main body (3b) is formed with bag-shaped portions at the four corners of the bottom plate (3), which are folded back at their four sides and have folded portions (3a) of a predetermined width orthogonal to each other. , The tip of a stepped bush for foot (8) having a groove (8a) on the outer periphery is inserted into a round hole (9) provided in the bottom plate body (3b), and the groove (8a) The casing structure according to claim 1 or 2, wherein an end edge of the folded-back portion (3a) is engaged with and welded and fixed.