JP2023173477A - Housing fixing structure - Google Patents

Abstract

To fix a bottom part back side of a housing with high strength easily even in a state where a workspace is not available in the housing and at the back side.SOLUTION: An opening (17) is provided at a lower part of a back wall (12) in a housing (1). A fixture (20) includes: an insertion part (23) which is inserted into the opening; and a support part (21) for placing the insertion part at a height of the opening. The insertion part of the fixture is inserted from the back side of the opening to fix the housing onto a floor surface (FL). The structure allows the insertion part to be inserted from the back side of the opening only by moving the entire housing to the back side and thus, the back side of the housing can be easily fixed even if a workspace is not available in the housing and at the back side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fixing structure for a casing that is used while being fixed to a base on a floor surface.

A switchboard or the like that accommodates predetermined electrical equipment is configured with a box-shaped casing. In such a case, a configuration in which the housing is installed on a base disposed on a floor surface is known, and such a configuration is disclosed in Patent Document 1.

In the configuration of Patent Document 1, through holes are formed in each of the bottom surface of the casing and the top surface of the base. A bolt is inserted into each through hole, and then a nut is screwed onto the bolt to fasten and fix the housing and the base.

The casing and the base are fixed using bolts at a plurality of locations, and generally, the fixing positions include at least two locations, one near the front and one near the back of the casing. Therefore, if there are doors on both the front and rear sides of the housing, the worker installing the housing must open each door and access the bolts from both the front and rear sides of the housing. Perform the work. In addition, if there is a wall near the back side of the case and there is no space for the worker to work, put your hand or body inside the case from the front side and access the bolts on the back side. It becomes like this.

Japanese Patent Application Publication No. 2005-26460

When fixing the back side of the housing from the front side through the interior of the housing as described above, the work space inside the housing may be limited depending on the number of devices housed in the housing or the layout of the housed devices. For this reason, there is a problem in that the workability of fixing the casing is reduced, such as when a worker uses a tool in an awkward position. If the fixing position on the back side of the casing is designed closer to the front, the decrease in work efficiency can be suppressed, but in this case, the fixing strength on the back side of the casing will be reduced, which is another problem. A problem occurs.

The present invention has been made in view of these points, and provides a casing that allows the bottom rear side of the casing to be fixed easily and with good strength even when there is no work space inside or on the back side of the casing. One of its purposes is to provide a fixed structure for the body.

A housing fixing structure according to one aspect of the present invention is a housing fixing structure for fixing a housing on a floor surface, and includes an opening provided at a lower part of a rear wall of the housing, and an opening provided at a lower part of a rear wall of the housing. A fixing device that can be inserted from the back side of the device.

According to the present invention, even if there is no working space on the back side of the casing or there is no working space due to equipment stored inside the casing, the opening can be opened by simply moving the entire casing to the back side. The fixing tool can be inserted from the back side, and the back side of the casing can be fixed easily and in a short time. Moreover, since the casing can be fixed to the floor at the back wall that is closest to the back in the depth direction of the casing, it is possible to exhibit good fixing strength on the back side.

FIG. 2 is a partial side cross-sectional view of the housing fixing structure according to the embodiment. FIG. 2 is a diagram of the fixing structure of the casing in FIG. 1 viewed from the back side. FIG. 2 is an enlarged view of the main part of FIG. 1. FIG. FIG. 4 is an exploded view of the casing and fixture of FIG. 3;

Hereinafter, a housing according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below, and can be implemented with appropriate modifications within the scope without changing the gist thereof. In the following figures, some configurations may be omitted for convenience of explanation.

In addition, in the following description and claims, unless otherwise specified, the left side in FIG. 1 will be referred to as "back side", "rear side", "rear", and the right side in FIG. The left and right direction in FIG. 1 is used as the depth direction, and the direction perpendicular to the paper surface of FIG. 1 (the left and right direction in FIG. 2) is used as the "front". The orientation of each structure described below is only an example, and can be changed to any orientation.

FIG. 1 is a partial side cross-sectional view of a housing fixing structure according to an embodiment. The casing 1 shown in FIG. 1 includes a predetermined accommodation space therein, and accommodates predetermined electrical equipment such as a control panel and a circuit breaker (not shown) in the accommodation space, for example.

The casing 1 includes a bottom wall 11 provided along the horizontal direction, a back wall 12 provided along the vertical direction from the rear end side of the bottom wall 11, and a back wall 12 provided along the vertical direction from both sides of the bottom wall 11 in the lateral direction. A pair of side walls 13 (see also FIG. 2) are provided along the side wall 13 (see also FIG. 2). Further, the housing 1 further includes a top wall (not shown) provided along the horizontal direction at the upper end side of the back wall 12 and the pair of side walls 13, and the top wall, the back wall 12 and the pair of side walls The front side of 13 is provided so that it can be opened and closed by a door 15.

The housing 1 is fixed on the floor FL via a base B installed on the floor FL. The base B is installed on the floor FL, for example, by arranging linearly extending shaped steel B1 (channel steel in the illustrated example) in a square frame shape.

FIG. 2 is a diagram of the housing fixing structure of FIG. 1 viewed from the back side. As also shown in FIG. 2, a fixture 20 is attached to a shaped steel B1 located on the rear side of the base B and extending laterally. A plurality of fixtures 20 are provided on the shaped steel B1 at predetermined intervals in the lateral direction. Specifically, the fixtures 20 are provided at three locations corresponding to both sides and the center of the back wall 12 in the lateral direction.

FIG. 3 is an enlarged view of the main part of FIG. As shown in FIG. 3, the fixture 20 is formed by bending a flat strip or plate member into a generally L-shape. The fixture 20 includes a support part 21 that extends in the vertical direction, a curved part 22 that is continuous with the upper end of the support part 21 and is curved in a quarter-arc shape, and a horizontal direction (frontward) that is continuous with the upper end of the curved part 22. direction).

In the fixture 20, the support part 21 and the insertion part 23 are formed in a row through a curved part 22. A plate-shaped or piece-shaped spacer S is provided between the rear surface of the base B to which the fixture 20 is attached and the lower region of the support part 21. By selecting the thickness of the spacer S, the position of the fixture 20 in the depth direction is adjusted. The attachment of the fixture 20 and the spacer S to the base B is not particularly limited, but may be exemplified by welding or the like.

With the support part 21 attached to the base B, the insertion part 23 is arranged upwardly from the upper surface of the base B by a predetermined distance. In other words, the insertion portion 23 is supported by the support portion 21, and the insertion portion 23 is disposed at a height position upwardly away from the upper surface of the base B. Here, an opening 17 into which the insertion part 23 of the fixture 20 is inserted is provided at the lower part of the back wall 12. As shown in FIG. 2, since the fixtures 20 are provided at three locations on the back wall 12 in the lateral direction, openings 17 are also formed at three locations on the back wall 12 in the lateral direction.

As shown in FIG. 3, the height position of the opening 17 formed in the back wall 12 of the housing 1 installed on the base B and the height position of the insertion part 23 in each fixture 20 are the same. It is said that In other words, in each fixture 20, the support portion 21 supports the insertion portion 23 so as to be located at the height of the opening 17. Since the height positions of the insertion part 23 and the opening part 17 are the same, when the insertion part 23 is inserted into the opening part 17, the insertion part 23 is aligned in the height direction (vertical direction) of the back wall 12 (casing 1). ). Here, the height direction is a part of a direction parallel to a plane perpendicular to the direction in which the insertion portion 23 projects. Moreover, the above-mentioned "same" includes a state in which dimensional tolerances and likelihoods are given due to installation of the casing 1 and processing of each member, and the same applies in the following.

Returning to FIG. 2, each opening 17 is formed in the shape of a laterally extending slot hole. Further, since the fixture 20 is formed by bending a piece-like or plate-like member, the insertion portion 23 that projects in the horizontal direction is also formed in a piece-like or plate-like shape and extends laterally.

In the lateral direction, the formation position and length of each opening 17 in the back wall 12 of the casing 1 installed on the base B and the installation position and length of the insertion part 23 in each fixture 20 are the same. Ru. Thereby, in the state where the insertion part 23 is inserted into the opening 17, the insertion part 23 can also regulate the displacement of the back wall 12 (casing 1) in the lateral direction. Here, the lateral direction is also a part of the direction parallel to the plane perpendicular to the direction in which the insertion portion 23 projects.

Next, the work of fixing the housing 1 onto the floor surface FL will be explained. Here, as shown in FIGS. 1 and 2, it is assumed that a base B having a size and shape corresponding to the housing 1 is installed on the floor surface FL, and each fixture 20 is attached to a predetermined position on the base B. do.

First, the casing 1 is placed on the base B so that the back wall 12 is located slightly forward of each fixture 20. Next, the housing 1 is aligned so that the lateral positions of the respective openings 17 match with respect to the respective fixtures 20 .

Thereafter, as shown in FIG. 4, the housing 1 is slid toward the rear, and the insertion part 23 of the fixture 20 is inserted from the back side of the opening 17. As a result, as shown in FIG. 3, the insertion portion 23 is inserted into the opening 17 and fitted with the fixture 20, and displacement of the rear wall 12 (casing 1) in the height direction and the lateral direction is restricted. be done.

In this state, since the spacer S was provided between the support part 21 of the fixture 20 and the rear surface of the base B, the opening part 17 was positioned forward of the boundary between the curved part 22 and the insertion part 23, The curved portion 22 can be prevented from entering the opening 17.

After inserting the insertion part 23 into the opening 17, the door 15 (see FIG. 1) is opened, and the operator inserts bolts 31 and nuts as fasteners from the front of the housing 1 toward the front of the bottom wall 11. The bottom wall 11 is fixed to the base B via 32. Specifically, with the insertion part 23 inserted into the opening 17, holes that communicate with each other are formed in the bottom wall 11 and the base B, and the bolts 31 are inserted into the holes and screwed onto the nuts 32. match. As a result, the bottom wall 11 and the base B are fastened and fixed by the bolts 31 and nuts 32, and displacement of the housing 1 in three-dimensional directions including the depth direction is restricted.

As described above, according to the embodiment, by simply moving the entire casing 1 to the back side, the insertion part 23 of the fixture 20 is inserted from the back side of the opening 17, and the casing 1 is moved to the back side. can be fixed to the floor FL. As a result, there are constraints such as there being no work space on the back side of the case 1 due to obstacles such as walls, or there being no work space inside the case 1 due to the layout of the electrical equipment accommodated. Also, the back side of the housing 1 can be fixed easily and in a short time.

Moreover, since the housing 1 can be fixed at the rear wall 12 where the opening 17 is formed, the rearmost side of the housing 1 in the depth direction is fixed. This makes it possible to provide good fixing strength on the back side of the casing 1 so that the back side of the casing 1 does not shift or vibrate.

Further, by configuring the fixture 20 as a substantially L-shaped member including the support portion 21 and the insertion portion 23, the fixture 20 can have a simple structure and high strength. Further, by making it possible to attach the fixture 20 to the base B using the support portion 21 and adjusting the attachment position as appropriate, the position of the insertion portion 23 can be set in correspondence to various formation positions of the opening 17. .

Moreover, since the insertion portion 23 protrudes in the horizontal direction, the insertion portion 23 can be easily inserted into the opening 17 by moving the housing 1 parallel to the floor surface FL.

Furthermore, since the opening portion 17 and the insertion portion 23 extend horizontally, they can exert a strong force to suppress the vertical force that tends to act greatly on the housing 1, thereby increasing the fixing strength on the back side of the housing 1. can be increased.

Further, since the fixture 20 has the curved portion 22, the fixture 20 can be formed by bending a relatively thick steel plate or the like, and the fixing strength can be increased while reducing the manufacturing cost of the fixture 20. Further, since the spacer S is provided, the insertion portion 23 can be inserted into the opening 17 by shifting the arc-shaped portion of the curved portion 22 backward.

Note that the present invention is not limited to the above embodiments, and can be implemented with various modifications. In the embodiments described above, the size, shape, orientation, etc. illustrated in the accompanying drawings are not limited to these, and can be changed as appropriate within the scope of achieving the effects of the present invention. Other changes can be made as appropriate without departing from the scope of the invention.

In the above embodiment, the housing 1 is installed on the base B, but the base B may be omitted and the housing 1 may be fixed to the floor FL. In this case, the lower end of the support part 21 of the fixture 20 The side is buried in the floor FL.

Further, the shapes of the opening 17 and the insertion section 23 can be changed in various ways. For example, the insertion section 23 can be formed into a shaft shape that projects in the horizontal direction, and the opening 17 can be changed depending on the cross-sectional shape of the shaft. The opening shape may also be set.

Further, in the fixture 20, the curved portion 22 may be omitted and the insertion portion 23 may be continuous to the upper end of the support portion 21, and in this case, the installation of the spacer S can be omitted.

Furthermore, although a case has been described in which bolts 31 and nuts 32 are used as fasteners, the fasteners are not particularly limited as long as they can fix the position closer to the front of the bottom wall 11, such as using rivets or clips. .

1 : Housing 11 : Bottom wall 12 : Back wall 17 : Opening part 20 : Fixture 21 : Support part 22 : Curved part 23 : Insertion part 31 : Bolt (fastener)
32: Nut (fastener)
B: Base FL: Floor S: Spacer

Claims (8)

A housing fixing structure for fixing the housing on a floor surface,
an opening provided at a lower part of the rear wall of the housing;
A fixing structure for a housing, comprising: a fixture that can be inserted from the back side of the opening. The fixture includes an insertion portion inserted into the opening;
2. The housing fixing structure according to claim 1, further comprising a support portion for arranging the insertion portion at a height of the opening. The insertion portion is formed to protrude in a horizontal direction, and when inserted into the opening, restricts displacement of the housing in a direction parallel to a plane perpendicular to a direction in which the insertion portion protrudes. The housing fixing structure according to claim 2. the opening is formed in the shape of a slot extending laterally;
4. The housing fixing structure according to claim 2, wherein the insertion portion is formed in a piece-like or plate-like shape extending laterally. The housing fixing structure according to claim 2 or 3, wherein the insertion portion and the support portion are connected via a curved portion formed in an arc shape. 4. The housing fixing structure according to claim 2, wherein the fixture is attached to a base installed on the floor surface. 7. The housing fixing structure according to claim 6, further comprising a spacer provided between the fixture and the base. 7. The housing fixing structure according to claim 6, wherein the bottom wall of the housing is fixed to the base via a fastener at a position near the front of the bottom wall of the housing.

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