JP3533594B2 - Control box cooling system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control box for accommodating electric parts and electric equipment for controlling the operation of a machine tool or the like.

[0002]

2. Description of the Related Art Generally, an electric device housed in a control box constitutes a power source section, an operating section, a control section and the like. The power supply unit may be, for example, a transformer (T) that transforms 200 V AC power from the outside into 100 V AC voltage, or 1
It is composed of an AC / DC converter that steps down and rectifies an AC voltage of 00V into a DC voltage of 24V, a breaker (CB) that opens and closes a current path, a magnet switch, a relay, and the like.

Conventional control boxes have a large volume and the electrical equipment is housed in a relatively small density. Therefore, conventionally, there has been almost no need for heat countermeasures inside the control box.

[0004]

However, recently,
There has been a demand for a significant increase in the occupied volume ratio of electrical equipment in the control box, and in response to this demand, it has become necessary to reduce the size of the control box and arrange parts and equipment at a relatively high density. . When an attempt is made to improve the occupied volume ratio of the electric device, the temperature inside the control box rises due to the heat generated in the heat generating part, mainly in the power source part, and other electric devices such as the control part having the semiconductor element as a constituent element The risk of malfunction, malfunction, deterioration, etc. due to heat increases.

The present invention has been made in view of the above points, and it is an object of the present invention to prevent a malfunction of an electric device due to heat by suppressing a temperature rise in a control box. is there.

[0006]

A cooling device for a control box according to the present invention comprises a plurality of mounting brackets mounted on the inner surface of the control box and a cooling fan fixed to each mounting bracket. , together with the circulating cooling air in the control box, the
The mounting bracket has a mounting angle to the inner surface of the control box.
Degree is adjustable and the mounting angle of the mounting bracket
Control knob that adjusts the attitude of the cooling fan by adjusting the
In the cooling device of the
From the mounting plate that is fixed to the inner surface of the control box,
A pair of first and second arms provided in a substantially vertical direction;
Both ends are held by the first and second arms, and the cooling fan
A cooling fan holding member to which the fan is fixed,
The arm is rotatably fixed to the mounting plate,
The second arm is tentatively centered on the rotation axis of the first arm.
It is fixed to the mounting plate so that the position on the circular arc can be adjusted.
Arbitrarily adjusting the position of the two arms on the virtual arc
The corner of the cooling fan holding member with respect to the mounting plate.
It is characterized in that the degree is adjusted .

[0007]

[0008]

Also, the cooling device for the control box according to the present invention.
Is a set of multiple mounts that are mounted on the inside of the control box.
Bracket with cooling fins fixed to each mounting bracket.
And a cooling fan for controlling the control box.
The air in the space is circulated and cooled, and the mounting bracket
The mounting angle of the unit is adjustable with respect to the inner surface of the control box.
Can be mounted by adjusting the mounting angle of the mounting bracket.
Cooling of the control box where the posture of the cooling fan is adjusted
In the rejection device, both ends of the mounting bracket are held by a mounting plate fixed to the inner surface of the control box, a pair of first and second arms provided in a substantially vertical direction from the mounting plate, and first and second arms. And a cooling fan holding member to which the cooling fan is fixed, wherein the first arm is
The second arm is rotatably fixed to the mounting plate, and the second arm is fixed to the mounting plate so that a plurality of positions on a virtual arc centered on the rotation axis of the first arm can be selected. It is characterized in that the angle of the cooling fan holding member with respect to the mounting plate is adjusted by arbitrarily selecting one position from a plurality of positions on the virtual arc.

[0010]

Also, the cooling device for the control box according to the present invention.
Is a set of multiple mounts that are mounted on the inside of the control box.
Bracket with cooling fins fixed to each mounting bracket.
And a cooling fan for controlling the control box.
The air in the space is circulated and cooled, and the mounting bracket
The mounting angle of the unit is adjustable with respect to the inner surface of the control box.
Can be mounted by adjusting the mounting angle of the mounting bracket.
Cooling of the control box where the posture of the cooling fan is adjusted
In the rejection device, both ends of the mounting bracket are held by a mounting plate fixed to the inner surface of the control box, a pair of first and second arms provided in a substantially vertical direction from the mounting plate, and first and second arms. And a cooling fan holding member to which the cooling fan is fixed, wherein the first arm is
The second arm is rotatably fixed to the mounting plate, and the second arm is fixed to the mounting plate so as to be adjustable in position on a virtual arc around the rotation axis of the first arm, The angle of the cooling fan holding member with respect to the mounting plate is adjusted by arbitrarily adjusting the position on the virtual arc, and the first and second arms are relative to the first and second arms of the cooling fan holding member. to hold the cooling fan holding member that can arbitrarily adjust the angle from both sides
Characterize .

Also, the cooling device for the control box according to the present invention.
Is a set of multiple mounts that are mounted on the inside of the control box.
Bracket with cooling fins fixed to each mounting bracket.
And a cooling fan for controlling the control box.
The air in the space is circulated and cooled, and the mounting bracket
The mounting angle of the unit is adjustable with respect to the inner surface of the control box.
Can be mounted by adjusting the mounting angle of the mounting bracket.
Cooling of the control box where the posture of the cooling fan is adjusted
In the rejection device, both ends of the mounting bracket are held by a mounting plate fixed to the inner surface of the control box, a pair of first and second arms provided in a substantially vertical direction from the mounting plate, and first and second arms. And a cooling fan holding member to which the cooling fan is fixed, wherein the first arm is
The second arm is rotatably fixed to the mounting plate, and the second arm is fixed to the mounting plate so that a plurality of positions on a virtual arc centered on the rotation axis of the first arm can be selected. By arbitrarily selecting one position from a plurality of positions on the virtual arc, the angle of the cooling fan holding member with respect to the mounting plate is adjusted, and the first and second arms are arranged on the cooling fan holding member. first, characterized by holding the cooling fan holding member that can arbitrarily adjust the angle from both sides with respect to the second arm.

Here, the upper portion of the control box is constituted by cooling fins.

[0014]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a control box incorporating a cooling device according to an embodiment, FIG. 2 is a perspective view of a mounting bracket of the cooling device, FIG. 3 is a plan view of the mounting bracket, and FIG. , A front view of the mounting bracket, and FIG. 5 shows a side view of the mounting bracket.

In FIG. 1, the cooling device 1 is provided with a plurality of mounting brackets 3 mounted on the inner surface 2a of the control box 2 at appropriate plural positions, and a cooling fan 4 fixed to each mounting bracket 3. As shown by the arrow a, the fan 4 lowers the air in the upper layer in the control box 2 downward and raises the air in the lower layer upward to circulate and cool the air in the control box 2.

Here, the upper portion of the control box 2 is constituted by a cooling fin 2b having a U-shape in a front view and a continuous uneven cross section, and the cooling fin 2b serves to increase the heat radiation area. The heat generated inside the control box 2 is efficiently cooled.

The mounting bracket 3 is mounted on the inner surface 2 of the control box.
It is attached to a so that the mounting angle can be adjusted. By adjusting the mounting angle of the mounting bracket 3, the posture of the cooling fan 4, in other words, the mounting angle is adjusted.

Specifically, as shown in FIGS. 2 to 5, the mounting bracket 3 includes a mounting plate 5 fixed to the inner surface 2a of the control box, and a pair of first mounting plates 5 provided substantially vertically from the mounting plate 5. , The second arm 6, 7 and the first, second arm 6, 7
And a cooling fan holding member 8 whose both ends are held by the cooling fan 4 to which the cooling fan 4 is fixed.

The mounting plate 5 is formed with a screw hole 5a into which the first mounting screw 9 is screwed, and an elongated hole 5b through which the second mounting screw 10 passes. The long hole 5b is the screw hole 5a.
It is formed along a virtual arc centered at.

The first arm 6 includes a mounting portion 6a fixed to the mounting plate 5 and a holding portion 6 vertically bent from the mounting portion 6a.
b. A hole 6c through which the first mounting screw 9 passes with a gap is formed in the mounting portion 6a. First arm 6
The first mounting screw 9 through the hole 6c of the mounting portion 6a,
The mounting screw 9 is fixed to the mounting plate 5 by screwing it into the screw hole 5a of the mounting plate 5 and tightening it. Further, the first arm 6 becomes rotatable about the first mounting screw 9 as a rotation axis by loosening the first mounting screw 9, and as shown by the solid line, the one-dot chain line and the two-dot chain line in FIG. The mounting angle of the first arm 6 with respect to 5 can be arbitrarily adjusted.

The second arm 7 includes a mounting portion 7a fixed to the mounting plate 5 and a holding portion 7 which is vertically bent from the mounting portion 7a.
b. A hole 7c through which the second mounting screw 10 passes with a gap is formed in the mounting portion 7a. Second arm 7
Attaches the second mounting screw 10 to the hole 7c of the mounting portion 7a, the mounting plate 5
Through the oblong holes 5b in this order, screw the nut 11 into the tip of the second mounting screw 10, and tighten the mounting plate 5 and the mounting portion 7a with the second mounting screw 10 and the nut 11 to fix the mounting plate 5 to the mounting plate 5. It Before this fixation, the second mounting screw 10
Can freely move in the elongated hole 5b along the virtual arc and the mounting portion 7a can rotate about the second mounting screw 10 as a rotation axis. By arbitrarily adjusting the angle of the mounting portion 7a, as shown in FIG.
Further, as shown by the solid line, the one-dot chain line and the two-dot chain line, the mounting position and the mounting angle of the second arm 7 with respect to the mounting plate 5 can be arbitrarily adjusted.

In this way, the first arm 6 is attached to the mounting plate 5.
4 can be arbitrarily adjusted, and the mounting position and the mounting angle of the second arm 7 with respect to the mounting plate 5 can be arbitrarily adjusted within an allowable range due to the shape of the elongated hole 5b. As shown by the solid line, the one-dot chain line and the two-dot chain line, the mounting angle of the pair of first and second arms 6 and 7 with respect to the mounting plate 5 can be arbitrarily adjusted.

The holding portions 6b of the first and second arms 6 and 7,
On the inner surface of 7b, the first and second rubber pads 12,
13 is attached. In addition, the holding portion 6 of the first arm 6
b and the first rubber pad 12, and holes 7d, 7d, 12a, 13 through which the third mounting screw 14 passes with a clearance in the holding portion 7b of the second arm 7 and the second rubber pad 13, respectively.
a is formed.

The cooling fan holding member 8 has a rectangular fan mounting portion 8c having a screw hole 8b for mounting a fan around a circular hole 8a, and a pair of flanges vertically bent from both ends of the fan mounting portion 8c. It is composed of parts 8d and 8e. Screw holes 8f and 8g into which the third mounting screw 14 is screwed are formed in the flange portions 8d and 8e.

The cooling fan holding member 8 is provided with the third mounting screw 1
4, 14 are holding portions 6b, 7b of the first and second arms 6, 7
Through holes 6d and 7d, holes 12a and 13a of the first and second rubber pads 12 and 13, and the third mounting screws 14 and 14 through screw holes 8f and 8g of flange portions 8d and 8e of the cooling fan holding member 8. First and second by screwing on and tightening
It is fixed to the arms 6 and 7. Further, the cooling fan holding member 8 becomes rotatable about the third mounting screws 14 and 14 as a rotation axis by loosening the third mounting screws 14 and 14.
As shown by the solid line, the one-dot chain line and the two-dot chain line in FIG. 5, the attachment angle of the cooling fan holding member 8 with respect to the first and second arms 6 and 7 can be arbitrarily adjusted.

FIG. 6 shows a modification of the mounting plate 5. The mounting plate 5 has a plurality of holes 5c along a virtual arc instead of the elongated holes 5b. The second mounting screw 10 can pass through each hole 5c with a gap, and one hole 5c is selected from the plurality of holes 5c, and the second mounting screw 10 is passed through the selected hole 5c and the nut 11 (see FIG. 3). 2) is screwed in, the attachment portion 7a of the second arm 7 is fixed to the attachment plate 5. Also with such a mounting plate 5, the mounting position and the mounting angle of the second arm 7 with respect to the mounting plate 5 are adjusted by arbitrarily selecting one hole 5c from the plurality of holes 5c.

[0028]

The cooling device for a control box according to the present invention comprises a plurality of mounting brackets mounted on the inner surface of the control box and a cooling fan fixed to each mounting bracket. Since the air is circulated and cooled, it is possible to suppress the temperature rise in the control box and prevent the occurrence of malfunction of the electric device due to heat.

The mounting bracket is mounted so that the mounting angle can be adjusted with respect to the inner surface of the control box, and the attitude of the cooling fan is adjusted by adjusting the mounting angle of the mounting bracket. By adjusting the attitude of the cooling fan by using the cooling fan, the effect of suppressing the temperature rise can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a control box in which a cooling device according to an embodiment of the present invention is incorporated.

FIG. 2 is a perspective view of a mounting bracket of the cooling device.

FIG. 3 is a plan view of a mounting bracket.

FIG. 4 is a front view of a mounting bracket.

FIG. 5 is a side view of a mounting bracket.

FIG. 6 is a front view of a main part of a modified example of a mounting plate.

[Explanation of symbols]

1 Cooling device 2 control box 2a inner surface 2b Cooling fin 3 Mounting bracket 4 cooling fan 5 Mounting plate 6 first arm 7 Second arm 8 Cooling fan holding member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-260879 (JP, A) JP-A-7-162180 (JP, A) JP-A-4-351404 (JP, A) JP-A-7- 257167 (JP, A) JP-A-7-86828 (JP, A) JP-A-4-115597 (JP, A) JP-A-3-289773 (JP, A) Actual development Sho-59-180492 (JP, U) Actual flat 2-41497 (JP, U) Actual flat 7-14708 (JP, U) Actual 60-66075 (JP, U) Actual 48-93340 (JP, U) Actual flat 2-110393 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05K 7/20

Claims (5)

(57) [Claims] And 1. A plurality of mounting brackets attached to the inner surface of the control box, and a cooling fan fixed to the mounting bracket, the front Symbol cooling fan, with circulating cool air in the control box, The above
Attached bracket is attached at an angle to the inner surface of the control box.
Is adjustable and the mounting angle of the mounting bracket
A control box for adjusting the attitude of the cooling fan by adjustment.
In the box cooling device, the mounting bracket is fixed to the inner surface of the control box.
Mounting plate and a pair provided in a substantially vertical direction from the mounting plate
Both ends by the first and second arms and the first and second arms
Is held and the cooling fan is secured to the cooling fan.
A holding member, and the first arm is rotatably fixed to the mounting plate.
And the second arm is centered on the rotation axis of the first arm.
The position of the second arm on the virtual arc is adjustable so that the position on the virtual arc can be adjusted.
To the mounting plate of the cooling fan holding member.
The cooling device for the control box, in which the angle to be adjusted is adjusted . 2. A compound mounted on the inner surface of the control box.
Several mounting brackets and fixed to each mounting bracket
And a cooling fan for controlling the
Circulate and cool the air in the control box and
Attached bracket is attached at an angle to the inner surface of the control box.
Is adjustable and the mounting angle of the mounting bracket
A control box for adjusting the attitude of the cooling fan by adjustment.
In the box cooling device, the mounting bracket is fixed to the inner surface of the control box.
Mounting plate and a pair provided in a substantially vertical direction from the mounting plate
Both ends by the first and second arms and the first and second arms
Is held and the cooling fan is secured to the cooling fan.
A holding member, and the first arm is rotatably fixed to the mounting plate.
And the second arm is centered on the rotation axis of the first arm.
Fixed to the mounting plate so that multiple positions on the virtual arc can be selected.
From a plurality of positions on the virtual arc of the second arm
The cooling fan by arbitrarily selecting one position
The cooling device for a control box , wherein an angle of the holding member with respect to the mounting plate is adjusted . 3. A compound mounted on the inner surface of the control box.
Several mounting brackets and fixed to each mounting bracket
And a cooling fan for controlling the
Circulate and cool the air in the control box and
Attached bracket is attached at an angle to the inner surface of the control box.
Is adjustable and the mounting angle of the mounting bracket
A control box for adjusting the attitude of the cooling fan by adjustment.
In the cooling device for a box, the mounting bracket includes a mounting plate fixed to an inner surface of the control box, a pair of first and second arms provided in a substantially vertical direction from the mounting plate, and both ends of the mounting bracket. And a cooling fan holding member to which the cooling fan is fixed, the first arm being rotatably fixed to the mounting plate, and the second arm being a rotation shaft of the first arm. Is fixed to a mounting plate so that the position on the virtual arc can be adjusted, and the angle of the cooling fan holding member with respect to the mounting plate is adjusted by arbitrarily adjusting the position of the second arm on the virtual arc. is, the first, second arm, said of the cooling fan holding member
To be able to arbitrarily adjust the angle with respect to the first and second arms
A cooling device for a control box, wherein the cooling fan holding member is held from both sides . 4. A compound mounted on the inner surface of the control box.
Several mounting brackets and fixed to each mounting bracket
And a cooling fan for controlling the
Circulate and cool the air in the control box and
Attached bracket is attached at an angle to the inner surface of the control box.
Is adjustable and the mounting angle of the mounting bracket
A control box for adjusting the attitude of the cooling fan by adjustment.
In the cooling device for a box, the mounting bracket includes a mounting plate fixed to an inner surface of the control box, a pair of first and second arms provided in a substantially vertical direction from the mounting plate, and both ends of the mounting bracket. And a cooling fan holding member to which the cooling fan is fixed, the first arm being rotatably fixed to the mounting plate, and the second arm being a rotation shaft of the first arm. Is fixed to a mounting plate so that a plurality of positions on a virtual arc centering on the center of the second arm can be selected, and one position is arbitrarily selected from a plurality of positions on the virtual arc of the second arm, thereby the cooling fan holding member. Of the cooling fan holding member is adjusted so that the angle of the cooling fan holding member with respect to the mounting plate is adjusted.
To be able to arbitrarily adjust the angle with respect to the first and second arms
A cooling device for a control box, wherein the cooling fan holding member is held from both sides . 5. The claim 1, upper portion of the control box is configured by the cooling fins
Cooling device control box, characterized in that that.