JPH1146409A - Control box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control box which can be standardized through unitization, can be reduced in cost, size, and occupying space, and can prevent temperature rises in the box caused by heat generation. SOLUTION: Each single box constituting a control box 1 is formed in an enclosure containing rectangular pipe-like supports 21 and wall plates connecting the supports 21 to each other. Each support 21 has protrusions 21a and 21b protruded outward from a ceiling plate 26 and a floor plate 27, so that two single boxes may be assembled together when a connecting body 4 is inserted between the protrusion 21a of one single box and the protrusion 21b of the other single box. In addition, when connecting passage bodies 6 are attached between wall plates, electric wires can be connected between the two single boxes. Moreover, vent holes are provided in the lower sections of the supports 21 so as to prevent temperature rises in the box 1 by making outside air flow through the supports 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control box mainly used for a machine tool, and more particularly to a control box which is reduced in size to a plurality.

[0002]

2. Description of the Related Art Conventionally, a control box used for a machine tool or the like has been specially designed so that its size is determined and designed each time according to the specifications of the machine tool. The designed conventional control box is formed in a single large casing, and a power supply circuit, a control section circuit, an operation section circuit, and the like are housed in the casing, and wiring work is respectively performed. Also,
The box is composed of L-shaped columns arranged vertically or horizontally and iron plates that are stretched and fixed between the columns, and a crane or the like is mounted on a suspension bolt attached to the upper surface of the ceiling. Has been transported to a predetermined place by being locked.

[0003]

However, since the conventional control box is designed each time in accordance with the specification, the time cost required for the design becomes enormous, and the designed control box has, for example, a specification change. If there is a manufacturing error, not only does the time and cost required for the correction become large, but also a large number of types of parts must be stocked in order to shorten the delivery time.

[0004] Further, since the conventional control box is formed in a single housing, the weight increases and the space in which the control box is actually installed increases, which affects the layout of the machine.

[0005] Further, when a single large box is manufactured, the operation cost is troublesome, and since the wiring operation is performed after the box is manufactured, the wiring operation conditions are deteriorated and the operation cost is increased. Become.

In addition, since the power supply circuit, the control circuit, and the operation circuit are housed in a single housing, the temperature inside the box rises during use, particularly due to heat generated from the power supply circuit. Abnormality may occur in the control circuit.

[0007] The present invention is to solve the above-mentioned problems, and the first object is to minimize the stock of semi-finished products by unitizing and standardizing, so that design and production can be performed immediately to specifications. The second purpose is to reduce the size and disperse the control box,
A third object is to save space. The third object is to prevent a rise in temperature inside the box and to make it difficult to conduct heat of a power supply circuit that generates a large amount of heat. Is to provide a box.

[0008]

A control box according to the present invention has the following configuration to solve the above-mentioned problems. That is, a control box configured by combining a plurality of single boxes, wherein the single box includes a pipe-shaped column standing on a corner portion and a wall plate connecting the columns to a housing. The support has a projection protruding outward from a ceiling plate disposed above the wall plate and a floor plate disposed below, and a lower part outside the housing of the support, and from the outside toward the inside of the support. And a connecting means connectable to another single box is provided so as to be fitted into the projection of the column.

[0009] Preferably, an opening is formed in a part of the wall plate, and a connection passage body constituting a connection passage with another single box is provided in the opening. I just need.

The ventilation means has a large-diameter hole and a small-diameter hole formed in the wall of the column, and the large-diameter hole is formed in a tapered shape expanding toward the inside of the housing. It may be characterized in that it is connected to the small-diameter portion of the large-diameter hole and is formed with an angle upward toward the inside of the support.

Further, the ventilation means is a ventilation member inserted through a hole formed in the wall of the column, and the ventilation member has a ventilation hole smaller in diameter than a hole formed on an outer side. A plurality of holes may be formed on the column side, and the ventilation hole may be formed to have an angle upward toward the inside of the column.

[0012] The ventilation means may be a ventilation member screwed into a screw hole formed in the wall of the column, and the ventilation member may be formed around a back side of a ventilation hole formed on an outer side. It may be formed to have an air convection section.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the control box 1 of the embodiment is configured by combining unitized single boxes 2. As shown in FIG. 2, the single box 2 includes four pillars 2 formed by square pipes at the corners of the box 2, and iron side plates 22 attached to the front, rear, left and right between the four pillars 21. 23, 24, 25,
The housing has an iron ceiling plate 26 attached to the upper surface and an iron floor plate 27 attached to the lower surface. The four pillars 21 are formed of a lightweight material such as aluminum, and have projections 21 a and 21 b formed so as to project outward from the ceiling plate 26 and the floor plate 27, and a projection on the lower side of the pillar 21. The part 21b includes a support 21 from outside.
Three ventilation holes 31 are formed inward. The side plates 22 and 24 are respectively disposed on the left and right sides with respect to the front surface, and another single box 2 and an opening window for passing electric wires are opened as necessary. The side plate 23 is arranged on the rear side of the box, and the side plate 25 is located on the front surface of the single box 2. An opening / closing door 25a, one of which is hinged, is arranged on the side plate 25 to open and close the inside of the box. The ceiling plate 26 is formed so that the outer peripheral portion is bent downward and closes the upper surface of the side plate, and the floor plate 27 is formed so that the outer peripheral portion is bent upward and closes the lower surface of the side plate. A single box 2 and an opening window through which electric wires pass are opened. Also, as shown in FIG. 3, both side plates have both end surfaces bent inward, and a support 21 is bonded to the outside of the bent surface and fixed with an adhesive and bolts.

As shown in FIG. 1, the control box 1 has an operation section circuit single box 2B mounted thereon via a connection body 4 and a connection passage 6 for passing electric wires above the power supply circuit single box 2A. The control unit circuit single box 2 </ b> C is disposed adjacent to the power supply unit circuit single box 2 </ b> A via a connection passage 6 for passing an electric wire.

As shown in FIG. 4, the connecting member 4 is formed in the shape of a stepped square pipe, and the entire peripheral surface of the central portion 4a
b. It protrudes outward from the lower part 4c by the thickness of the column 21. Since the dimension between the opposed outer peripheral surfaces of the upper part 42 and the lower part 43 is formed slightly smaller than the dimension between the inner peripheral faces of the column 21, the connecting body 4 is formed so as to be fitted into the inner periphery of the column 21. Will be done. Then, the lower part 4c of the connection body 4 is fitted into the upper projections 21a of the four columns 21 of the single box 2A for the power supply circuit, and the upper part 4c of the connection body 4
b, the lower protrusion 21b of the single box 2B for the operation section circuit
Is inserted into the power supply circuit single box 2
The operation unit circuit single box 2B is placed on A. Further, a connection passage 6 described later in detail is attached between the power supply unit circuit single box 2A and the operation unit circuit single box 2B.

As shown in FIG. 5, the connection passage body 6
It has both flange portions 6a, 6a and a body portion 6b formed in a rectangular pipe shape, and is formed so that both flange portions 6a, 6a are attached between two single boxes 2. The shape of the connection passage 6 is not limited to the above.

According to FIG. 1, the connection passage body 6 is attached to two places, that is, above and to the right of the single box 2A for the power supply circuit. Above, between the ceiling plate 26 of the single box 2A for the power supply unit circuit and the floor plate 27 of the single box 2B for the operation unit circuit, the wire passage openings 26 formed in the respective plates.
Each of the flange portions 6a of the connection passage body 6 is attached so as to face the a.27a, and on the right side, faces the electric wire insertion opening 24a formed in the side plate 24 of the single box 2A for the power supply circuit. Thus, one flange portion 6a is attached, and the other flange portion 6a is attached so as to face the electric wire insertion opening 22a formed on the side plate 22 of the control unit circuit single box 2C. Thereby, the single box 2A for the power supply unit circuit and the single box 2C for the control unit circuit are assembled, and the control box 1 including the single box 2B for the operation unit circuit is assembled.

In each of the single boxes 2, respective circuits are wired in advance, and between the single boxes (between the single box 2A for the power supply unit circuit and the single box 2B for the operation unit circuit, the single unit for the power supply unit circuit). An electric wire passes through the connection passage 6 between the box 2A and the control unit circuit single box 2C, and is connected after each single box 2 is assembled.

The single box for the power supply unit circuit and the single box for the operation unit circuit can be combined into one single box. In this case, the power supply circuit / operation unit circuit single box may be placed above the control unit circuit single box via the connector 4.

Vent hole 31 formed in the lower part of column 21
In the present embodiment, are formed from the outer side in the left-right direction of the lower protruding portions 21b of the respective columns 21 toward the inside of the columns 21. As shown in FIG.
Reference numeral 1 denotes a tapered large-diameter hole 31a that extends outward from a central portion of the wall 21b in one wall 21c of the protrusion 21b.
A small-diameter hole 31b connected to the small-diameter portion of the large-diameter hole 31;
And the small-diameter hole 31 b is
It is formed to be inclined upward by about 35 ° toward the inside.
Air entering from the outside flows from the large-diameter hole 31a to the small-diameter hole 31.
The air flows into the support 21 from the lower part to the upper part by the formation of the small-diameter hole 31b that is sucked into the support b and flows into the support 21 and has an upward inclination of about 35 °. Experimental results have shown that an inclination angle of 35 ° is optimal for generating airflow.

It should be noted that if a small fan is arranged at a position where the interference with the connecting member 4 is not hindered in the upper part of the column 21, the flow of air is further improved.

The cooling effect is produced by the air flowing through the four columns, and the aluminum columns 2
1 and iron side plates 22, 23, 24 and 25 and ceiling plate 26
The temperature inside the box can be prevented from increasing due to the heat conduction ratio effect of the dissimilar metal joining of the floor panel 27.

The ventilation hole is not limited to the above-described embodiment, but can be applied to other forms. FIG. 7 shows a ventilation member 33 formed by resin molding and having a ventilation hole formed therein.
3B shows a state where the rectangular hole 28a is inserted into a rectangular opening 28a formed in the wall 21c on the outer side in the left-right direction of FIG. The ventilation member 33
A rectangular flange portion 33a abutting on the outer surface of the wall 21,
A main body 33b inserted into the opening 28a;
and a rectangular air hole forming portion 33c formed upward from the inside of the support 21 by about 35 ° from the air hole forming portion 33b.
In c, three-stage rectangular ventilation holes 33d are formed in the vertical direction. In addition, a large air hole 33e is formed inside the flange portion 33a and the main body portion 33b. Thereby, the same operation and effect as the above-described embodiment can be achieved.

FIG. 8 shows a ventilation member 36 of still another form, wherein the ventilation member 3 is formed in a hollow round shape.
Reference numeral 6 denotes a stepped nipple 37 which is screwed to a female screw 28b formed on the left and right outer wall 21c of the lower projection 21b of the column 21 and a male screw 37a of the outer large diameter portion of the stepped nipple 37. And a hollow main body 38 to be formed. Vent hole 3 formed at the tip of main body 38
8a protrudes inward of the main body portion 38 and has a ventilation hole 38a.
A concave air convection chamber 38b is formed so that air can convect around the inner back side of the area a. In this embodiment, the ventilation holes 38
The diameter of the hole a is formed smaller than the diameter of the internal passage hole 37b of the stepped nipple 37, and the air convection chamber 3 in the main body 38 is formed.
At 8b, the air is convected to generate a flow into the support column 21.

As shown in FIG. 9, a plurality of elongated holes 3 are formed on one surface of the lower projection 21b of the column 21 in the longitudinal direction.
9a is formed, and a plurality of elongated holes 39b are formed in the other surface in the lateral direction.
May be provided to form the ventilation holes 39.

In any case, by arranging a small fan as described above, air can be positively flown.

In the single box 2 formed in this way, the assembled box itself or each part constituting the box can be standardized, and can be held in stock in advance. Then, it is also possible to wire the power supply unit circuit and the operation unit circuit in each single box in advance. By using the connection body 4 or the passage body 6, any number of the single boxes 2 can be combined according to the specifications. that time,
If the single box for the power supply unit circuit that generates a large amount of heat is separated from the single box for the control unit circuit as much as possible, it becomes difficult to conduct heat.

[0029]

According to the present invention, the control box is constituted by combining a plurality of single boxes, and the pipe-like column constituting the single box protrudes from the ceiling plate / floor plate. Another single box can be attached to the upper or lower part of the pipe via a connecting body, and the inside of the pipe-shaped support is ventilated by ventilation means. Therefore, the control box can be made smaller and dispersed. This makes it possible to standardize the single box itself or the components that make up the single box,
This leads to inventory management, shortening of design / manufacturing time, cost reduction, and space saving.

Further, by ventilating the inside of the column, the temperature inside the box can be prevented from rising, and the heat conduction from the power supply unit, which generates a large amount of heat, to the control unit can be reduced, including the dispersion of the single box. This is unlikely to cause control abnormalities.

Further, if a connection passage is provided between the individual boxes, electric wires can be passed between the individual boxes.

[Brief description of the drawings]

FIG. 1 is a central sectional view of a control box according to an embodiment of the present invention.

FIG. 2 is an overall perspective view of the single box of FIG. 1;

FIG. 3 is a plan sectional view of the same.

FIG. 4 is a perspective view of a connecting body in FIG. 1;

FIG. 5 is a perspective view of the connection passage body in FIG. 1;

FIG. 6 is a cross-sectional view showing details of a ventilation hole formed in a pillar in FIG. 1;

FIG. 7 is a sectional view showing details of the ventilation member.

FIG. 8 is a cross-sectional view showing details of a ventilation member in another embodiment.

FIG. 9 is a view showing a ventilation hole in another embodiment.

[Explanation of Signs] 1 ... Control box 2 ... Single box 4 ... Connecting body 6 ... Connecting passage body 21 ... Prop 21a ... Protrusion 22,23,24,25 ... Side board (wall board) 26 ... Ceiling board (wall board) 27: floor board (wall board) 31, 39: vent hole (venting means) 33, 36 ... venting member (venting means)

Claims (5)

[Claims] 1. A control box configured by combining a plurality of single boxes, wherein the single box includes a pipe-like column standing on a corner and a wall plate connecting the columns. The column has a protrusion protruding outward from a ceiling plate arranged above the wall plate and a floor plate arranged below, and the column is formed from the outside on the lower part of the column outside the case. A control box, comprising: a ventilation means provided toward a support, wherein a connection body connectable to another single box is fitted into the protrusion of the support so as to be fitted therein. 2. An opening is formed in a part of said wall plate, and a connection passage which forms a connection passage with another single box is provided in said opening. Control box. 3. The ventilation means has a large-diameter hole and a small-diameter hole formed in the wall of the column, and the large-diameter hole is formed in a tapered shape expanding toward the inside of the housing. The control box according to claim 1, wherein the control box is connected to a small-diameter portion of the large-diameter hole and is formed with an angle upward toward the inside of the support. 4. The ventilation means, wherein the ventilation means is a ventilation member inserted into a hole formed in a wall of the column, and the ventilation member has a ventilation hole smaller in diameter than a hole formed on an outer side. 3. The control box according to claim 1, wherein a plurality of holes are formed inside the support, and the ventilation holes are formed at an angle upward toward the inside of the support. 5. The ventilation means, wherein the ventilation means is a ventilation member screwed into a screw hole formed in a wall of the support, and the ventilation member is provided around a back side of a ventilation hole formed on an outer side. The control box according to claim 1, wherein the control box is formed to have an air convection section.