JPH0742983A - Motor supporter for ventilation fan - Google Patents

Abstract

PURPOSE:To improve the strength of a motor supporter for ventilation fans without spot welding of support leg parts mutually. CONSTITUTION:A fold part 4 is provided at a side end part of one support leg part 3 of a support piece 5 to improve the strength of the support leg part 3. A planar part of the support leg part 3 of the other support piece 5 is inserted into the fold part 4 of the support leg part 3 of the one support piece 5 to be overlapped securely being fitted into each other to form a motor support device for a ventilation fan. This achieves higher strength of the motor support device without any spot welding between the support leg parts 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor support device for a ventilation fan.

[0002]

2. Description of the Related Art Conventionally, a ventilation fan motor supporting device has generally been one in which a blade driving motor is supported and fixed at the center of four independent columns provided in the ventilation fan main body.
Since the exhausted air passes through the pillars, the pillars become dirty and the ventilation resistance increases.
For this reason, in recent years, there has been a demand for a motor support device for a ventilation fan that is excellent in cleanability and has low air resistance. To meet this demand, by reducing the number of columns,
There are provided improved cleanability and reduced air resistance. The configuration will be described below with reference to FIGS. 7 and 8.

As shown in the figure, the fixing portion 1 is formed by bending both ends of a strip-shaped plate material in the same direction and at a substantially right angle.
No. 01 is formed, a semicircular holding portion 102 is formed in the approximate center between these fixing portions 101, and support legs 103 are formed between both ends of the holding portion 102 and the fixing portion 101. An annular holding portion 1 in which two pieces 104 are made into a pair and both holding portions 102 hold the blade driving motor 105.
While forming 06, the support leg portions 103 are brought into contact with each other and spot-welded to fix the fixing portion 101 to the lower surface and the upper surface of the inner wall surface of the frame-shaped ventilation fan main body 107 by caulking. Then, the motor 105 is inserted into the holding portion 106, and the motor fixing portion 108 of the motor 105 is screwed to the motor supporting portion 109 provided on the holding portion 102 of the supporting piece 104.
Was to be fixed by.

[0004]

In such a conventional motor support device for a ventilation fan, a heavy motor 105 is used.
Since the supporting legs 103 are supported and fixed by spot welding, the strength of the ventilation fan motor supporting device itself is secured by spot welding the supporting leg portions 103, so it is necessary to prepare a large-scale facility for spot welding. In addition, there is a problem that a manufacturing process is increased due to a spot welding mark treatment process or the like.

The present invention solves the above-described problems, and improves the strength of a ventilation fan motor support device without spot welding the support legs, thereby reducing the manufacturing cost of the ventilation fan motor support. A first object is to provide a device.

The second object is to improve the strength of the motor support device for the ventilation fan and the assemblability thereof without spot welding the support legs.

[0007]

A first means for achieving the first object of the present invention is to sandwich a strip-shaped plate member in a semi-annular shape, and to sandwich the sandwiched portion from opposite ends. Of the support legs, a flat supporting leg extending in the direction, a folding portion extending in a direction substantially folded into a U shape at one end of one of the supporting legs, and each of the supporting legs. A pair of support pieces consisting of a fixed part extending in the same right-angle direction from the tip part is used as a pair, and these support pieces are provided at the folded-back part of the support leg part of one support piece and the plane of the support leg part of the other support piece. -Shaped part is inserted and fixed by superposition so as to be fitted to each other, and an annular motor support part composed of the two holding parts is formed in the central part, and the fixing part is a frame-shaped ventilation fan body. Of the motor support device for the ventilation fan, which is fixed to both opposite sides of the In which was formed.

A second means for achieving the second object is a sandwiching portion formed by a strip-shaped plate material in a semi-annular shape, and a planar support extending in opposite directions from both ends of the sandwiching portion. A leg portion, a first bent portion extending in a direction perpendicular to a planar portion of the support leg portion at one end of one of the support leg portions, and the support leg portion A pair of support pieces consisting of a fixed portion extending in the same right-angle direction from the respective tip portions of the pair of support pieces is formed as a pair, and the first bent portion of the support leg portion of one of the support pieces is connected to the other support piece. A side end portion of the support leg portion not provided with the first bent portion,
And the first bent portion of the support leg portion of the other support piece is brought into contact with the side end portion of the support leg portion on which the first bent portion of the one support piece is not provided, and the planar portions are joined to each other. The support portion of the annular motor formed of the two sandwiching portions is formed in contact with the central portion, and the fixing portions are fixed to both side surfaces of the frame-shaped ventilation fan body facing each other and provided in a bridge shape. This is a structure of a motor support device for a ventilation fan.

A third means for achieving the second object is a sandwiching part formed by a strip-shaped plate material in a semi-annular shape, and a planar support extending in opposite directions from both ends of the sandwiching part. A leg, a first bent portion extending in a direction perpendicular to the planar portion of the support leg at one end of one of the support legs, and another support. A second extension extending in the same direction as the first bent portion at a side end of the one support leg of the leg opposite to the first bent portion.
A pair of supporting pieces composed of a bent portion and a fixing portion extending from the respective tip portions of the supporting leg portions in the same right-angle direction, and the first supporting leg portion of the supporting leg portion of one of the supporting pieces. The second part of the supporting leg of the other supporting piece is provided at the bent portion.
A side end of the support leg of the other support piece and a side end of the support leg of the other support piece opposite the second bend of the support leg of the other support piece, The second bent portion of the support leg of the one support piece has a side end opposite to the first bent portion of the support leg of the other support piece, and the first end of the support leg of the other support piece. The side end of the support leg of the one support piece opposite to the first bend is abutted against the second bend, and the annular motor support is composed of the two holding parts in the center. And the fixing portions are fixed to the opposite side surfaces of the frame-shaped ventilation fan main body to provide a bridge fan-shaped motor support device.

Further, a fourth means for achieving the second object is a holding portion formed by a strip-shaped plate material in a semi-annular shape, and a flat support extending in opposite directions from both ends of the holding portion. A leg portion, a convex portion projecting on the flat side portion of one of the support leg portions on the concave side of the holding portion, and the holding portion of the flat portion of the other support leg portion. With reference to the above-mentioned convex portion, an engaging hole opened at a target position, and a pair of two support pieces composed of a fixing portion extending in the same right-angle direction from the respective tip portions of the support leg portions, one pair of support pieces is provided. The convex portion of the supporting leg portion of the other supporting piece is engaged with the engaging hole of the supporting leg portion, and the flat portions are brought into contact with each other to form an annular shape having two sandwiching portions in the central portion. A support part of the motor is formed, and the fixing part is fixed to both sides of the frame-shaped ventilation fan main body which face each other. It is obtained by the configuration of the ventilating fan motor support device formed by providing a Jo.

Further, a fifth means for achieving the second object is a sandwiching portion formed by a strip-shaped plate material in a semi-annular shape, and a planar support extending in opposite directions from both ends of the sandwiching portion. A leg portion, a cut-and-raised portion projecting on the concave side of the holding portion on the flat portion of one of the support leg portions, and the holding portion of the flat portion of the other support leg portion. One side of the supporting leg is a pair of supporting pieces, each of which includes the cut-and-raised part, an engaging hole opened at a target position with respect to the base, and a fixing part extending in the same right-angle direction from each tip of the supporting leg. Cut-up of the support leg of the other support piece in the engagement hole of the support leg of one piece, and cut-raise of the support leg of the one support piece in the engagement hole of the support leg of the other support piece Engage the parts, and bring the flat parts into contact with each other,
A ventilating fan motor having a bridge-like structure in which a circular motor supporting portion including the two holding portions is formed in the central portion, and the fixing portions are fixed to opposite side surfaces of a frame-shaped ventilation fan main body. This is a structure of the supporting device.

Further, a sixth means for achieving the second object is a sandwiching portion formed by a strip-shaped plate material in a semi-annular shape, and a planar support extending in opposite directions from both ends of the sandwiching portion. A leg portion, a convex portion projecting on the flat side portion of one of the support leg portions on the concave side of the holding portion, and the holding portion of the flat portion of the other support leg portion. Two pairs of support pieces, each of which is composed of the convex portion, a concave portion projecting to the convex side of the sandwiching portion at a target position at the target position, and a fixing portion extending in the same right-angle direction from the respective tip portions of the supporting leg portions. As a projection of the support leg of the other support piece in the recess of the support leg of the other support piece, and a projection of the support leg of the one support piece in the recess of the support leg of the other support piece Engage,
In addition, the flat portions are brought into contact with each other to form an annular motor support portion composed of the two sandwiching portions in the central portion, and the fixed portion is replaced with a frame.

[0013]

According to the present invention, with the structure of the above-mentioned first means, the strength of the supporting leg is improved by providing the folded-back portion at the side end of one supporting leg of the supporting piece, and the supporting leg of the other supporting piece is also improved. By inserting the planar portion of the supporting leg portion of the other supporting piece into the folded-back portion of the supporting leg portion of the supporting leg portion and stacking and fixing them so as to fit each other, the motor supporting device for the ventilation fan is formed. It is prevented that the parts are displaced from each other toward the folded-back part and the support legs are separated from each other, and the strength of the ventilation fan motor support device is improved.

According to the structure of the second means, by providing the first bent portion at the side end portion of one supporting leg portion of the supporting piece, the strength of the supporting leg portion is improved, and the supporting piece of the other supporting piece is also provided. Side end of the supporting leg in which the first bending part of the supporting leg is not provided with the first bending part of the other supporting piece, and the first bending of the supporting leg of the other supporting piece Part of the support piece is not provided with the first bent portion, and the side end portions of the support leg portions are brought into contact with each other to form the motor support device for the ventilation fan. Since it is prevented from shifting in the direction, the strength of the ventilation fan motor support device is improved, and the first bent portion is provided in the direction perpendicular to the planar portion of the support leg portion. , The support leg of the support piece with a simple linear movement, Will be able to match, it becomes possible to improve the assembling property.

According to the structure of the third means, the first bent portion is formed at the side end portion of one supporting leg portion of the supporting piece, and the second bent portion is formed at the side end portion of the other supporting leg portion. By providing the support leg, the strength of the support leg is improved, and the first bent portion of the support leg portion of the one support piece is provided at the side end opposite to the second bent portion of the support leg portion of the other support piece. And a first bent portion of the support leg portion of the other support piece, a side end portion of the support leg portion of the one support piece opposite to the second bend portion, and a support leg portion of the one support piece. The second bent portion has a side end portion of the support leg of the other support piece opposite to the first bent portion, and the second bend portion of the support leg of the other support piece has one support piece. Forming a motor support device for a ventilation fan by abutting a side end portion of the support leg portion opposite to the first bent portion. Therefore, the support legs are prevented from shifting from each other toward the first bent portion and the second bent portion, the strength of the ventilation fan motor supporting device is improved, and the first bent portion is also prevented. , And the second bent portion are provided in a direction perpendicular to the planar portion of the support leg portion, the support leg portions of the support piece can be combined by a simple linear movement, and the assembly thereof can be performed. It is possible to improve the property.

According to the structure of the fourth means, a convex portion is provided on one of the supporting leg portions of the supporting piece, and an engaging hole is provided on the other planar portion of the supporting leg portion. In the engaging hole of the supporting leg of one piece, the convex portion of the supporting leg portion of the other supporting piece, and in the engaging hole of the supporting leg portion of the other supporting piece, the convex portion of the supporting leg portion of one supporting piece. By forming the ventilation fan motor support device by engaging with each other, it is possible to prevent the support legs from being displaced from each other in the contact surface direction, thereby improving the strength of the ventilation fan motor support device. The support legs of one piece can be combined by a simple linear movement, and the assembling property thereof can be improved.

According to the structure of the fifth means, a cut-and-raised portion is formed on the flat surface portion of one support leg portion of the support piece, and an engaging hole is formed on the flat surface portion of the other support leg portion. A cut-and-raised portion of the support leg portion of the other support piece is formed in the engagement hole of the support leg portion of the support piece, and a support leg portion of the one support piece is formed in the engagement hole of the support leg portion of the other support piece. By engaging the raised portions to form the motor support device for the ventilation fan,
The support legs are prevented from being displaced from each other in the contact surface direction, the strength of the motor support device for the ventilation fan is improved, and the support legs of the support pieces are combined by a simple linear movement. Therefore, the assembling property can be improved.

According to the structure of the sixth means, a convex portion is provided on a plane portion of one supporting leg portion of the supporting piece, and a concave portion is provided on a plane portion of the other supporting leg portion, so that For a ventilation fan by engaging the convex portion of the supporting leg portion of the other supporting piece with the concave portion of the supporting leg portion and the convex portion of the supporting leg portion of the one supporting piece with the concave portion of the supporting leg portion of the other supporting piece. By forming the motor support device, it is possible to prevent the support legs from being displaced from each other in the contact surface direction, which improves the strength of the motor support device for the ventilation fan, and the support leg of the support piece is removed. It is possible to combine them by a simple linear motion, and it is possible to improve the assembling property thereof.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

In this embodiment, only the ventilation fan motor support device is shown, and the ventilation fan main body for fixing this and the blade drive motor fixed to this ventilation fan motor support device have the same shape as the conventional one. Will be omitted.

As shown in the figure, both ends of the strip-shaped plate are bent in the same direction and at a substantially right angle, so that the fixing portion 1 is formed.
And a semicircular holding portion 2 is formed substantially in the center between these fixing portions 1, and both ends of the holding portion 2 and the fixing portion 1 are formed.
A supporting leg portion 3 is formed between the supporting leg portion 3 and the supporting leg portion 5, and one of the supporting leg portions 5 has a pair of supporting pieces 5 each having a folding portion 4 extending in a direction of folding in a substantially U shape. These supporting pieces 5 are superposed so that the flat portions of the supporting leg portions 3 of the other supporting piece 5 are inserted into the folded-back portions 4 of the supporting leg portions 3 of the one supporting piece 5 and are fitted to each other. In addition to fixing, an annular holding portion 6 composed of two holding portions 2 is formed in the central portion, and the fixing portion 1 is caulked to the lower surface and the upper surface of the inner wall surface of the frame-shaped ventilation fan main body (not shown). Then, a motor (not shown) is inserted into the holding portion 6, and the motor fixing portion of this motor is fixed to the motor supporting portion 7 provided on the holding portion 2 of the supporting piece 5 with screws (not shown). is there.

In the above structure, by providing the folded-back portion 4 at the side end portion of the one support leg portion 3 of the support piece 5,
The strength of the support leg portion 3 is improved, and the flat portion of the support leg portion 3 of the other support piece 5 is inserted into the folded-back portion 4 of the support leg portion 3 of the one support piece 5 and fitted together. By forming the motor support device for the ventilation fan by overlapping and fixing them together, the support leg portions 3 tend to shift toward the base end portions of the folded-back portions 4 and the support leg portions 3 tend to separate from each other. And are prevented, and the strength of the ventilation fan motor support device is improved.

As described above, according to the exhaust fan motor support device of the embodiment of the present invention, the strength of the exhaust fan motor support device is improved without spot welding the support legs 3 as in the conventional case. In addition, it is not necessary to prepare a large-scale facility for spot welding, and a spot welding mark treatment process is not necessary, so that the manufacturing cost can be significantly reduced.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, this embodiment is different from the above-mentioned first embodiment in that one side end portion of one supporting leg portion 3A is perpendicular to the plane portion of the supporting leg portion 3A. A pair of two support pieces 5A extending from the first bent portion 4A is used, and one support piece 5A of these support pieces 5A has the first bent portion 4A of the support leg portion 3A and the other support piece 5A of the other support piece 5A. The side end of the support leg 3A not provided with the first bent portion 4A and the first end of the support leg 3A of the other support piece 5A.
Is characterized in that the side end portion of the supporting leg portion 3A of the one supporting piece 5A on which the first bent portion 4A is not provided is brought into contact with the bent portion 4A, and the planar portions are brought into contact with each other. .

In the above structure, by providing the first bent portion 4A at the side end portion of the one supporting leg portion 3A of the supporting piece 5A, the strength of the supporting leg portion 3A is improved and the one supporting leg portion 5A is also improved. The first bent portion 4A of the support leg portion 3A is not provided with the first bent portion 4A of the other support piece 5A, and the side end portion of the support leg portion 3A and the support leg portion of the other support piece 5A. By making the side end of the support leg portion 3A where the first bent portion 4A of the one support piece 5A is not provided contact the first bent portion 4A of 3A to form the ventilation fan motor support device, The support leg portions 3A are prevented from shifting from each other in the direction of the first bent portion 4A, the strength of the motor support device for the ventilation fan is improved, and the first bent portion 4A is changed to the support leg portion 3A. Right angle to the flat part Since it is provided, the support piece 5A
The supporting legs 3A can be combined with a simple linear movement.

Thus, according to the ventilation fan motor support device of the embodiment of the present invention, the strength of the ventilation fan motor support device is improved without spot welding the support leg portions 3A as in the conventional case. The assemblability can be improved.

Next, a third embodiment of the present invention will be described with reference to FIG. The same components as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, this embodiment is different from the second embodiment in that one support leg portion 3 of the other support leg portion 3B.
A pair of support pieces 5B having a second bent portion 8 extending in the same direction as the first bent portion 4A at the side end portion on the opposite side of the first bent portion 4A of B is used as a pair. First bent portion 4A of support leg portion 3B of one support piece 5B of 5B
A side end portion of the support leg portion 3B of the other support piece 5B opposite to the second bent portion 8 and the other support piece 5B.
To the first bent portion 4A of the support leg portion 3B, the side end portion of the support leg portion 3B of the one support piece 5B on the side opposite to the second bent portion 8 and the support leg portion 3B of the one support piece 5B. In the second bent portion 8, the side end portion of the support leg 3B of the other support piece 5B opposite to the first bent portion 4A, and the second bent portion of the support leg portion 3B of the other support piece 5B. 8 is characterized in that the side end portion of the support leg portion 3B of the one support piece 5B on the side opposite to the first bent portion 4A is brought into contact with each other, and the planar portions are brought into contact with each other.

In the above structure, the first bent portion 4A is provided at the side end portion of the one support leg portion 3B of the support piece 5B, and the second bent portion 8 is provided at the side end portion of the other support leg portion 3B. Thereby, the strength of the support leg portion 3B is improved, and the first bent portion 4A of the support leg portion 3B of the one support piece 5B is connected to the second bent portion 8 of the support leg portion 3B of the other support piece 5B. To the side end on the opposite side and to the first bent portion 4A of the support leg 3B of the other support piece 5B and the side opposite to the second bent portion 8 of the support leg 3B of the one support piece 5B. An end portion, a second bent portion 8 of the support leg portion 3B of the one support piece 5B, a side end portion of the support leg portion 3B of the other support piece 5B opposite to the first bent portion 4A, and the other end portion. The second bent portion 8 of the supporting leg portion 3B of the supporting piece 5B of The first bent part 4A of the Jiashi portion 3B
By forming the ventilation fan motor support device by abutting the side end portion on the opposite side to the support leg portions 3B, the support leg portions 3B tend to shift toward the first bent portion 4A and the second bent portion 8. Is prevented, the strength of the ventilation fan motor supporting device is improved, and the first bent portion 4A,
Since the second bent portion 8 is provided in the direction perpendicular to the planar portion of the support leg portion 3B, the support leg portion 3B of the support piece 5B can be combined with a simple linear movement. Become.

As described above, according to the exhaust fan motor support device of the embodiment of the present invention, the strength of the exhaust fan motor support device is improved without spot welding the support leg portions 3B as in the conventional case. The assemblability can be improved.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the drawing, this embodiment differs from the first embodiment in that a convex portion 9 is provided on the flat side portion of one supporting leg 3C on the concave side of the holding portion 2 and the other portion is formed. The supporting leg 3C of one supporting piece 5C is formed by forming a pair of two supporting pieces 5C having the convex portion 9 and the engaging hole 10 opened at the target position with reference to the sandwiching portion 2 of the planar portion of the supporting leg 3C. The convex portion 9 of the support leg portion 3C of the other support piece 5C in the engagement hole 10 and the support leg portion 3C of the one support piece 5C in the engagement hole 10 of the support leg portion 3C of the other support piece 5C. It is characterized in that the convex portions 9 are engaged with each other and the planar portions are brought into contact with each other.

In the above-mentioned structure, the convex portion 9 is provided on the planar portion of the one supporting leg portion 3C of the supporting piece 5C, and the engaging hole 10 is provided on the planar portion of the other supporting leg portion 3C. The other supporting piece 5 is inserted into the engaging hole 10 of the supporting leg portion 3C of 5C.
The convex portion 9 of the supporting leg portion 3C of C and the other supporting piece 5
By engaging the convex portion 9 of the supporting leg portion 3C of the one supporting piece 5C with the engaging hole 10 of the supporting leg portion 3C of C to form the ventilation fan motor supporting device, the supporting leg portions 3C come into contact with each other. The attempt to shift in the plane direction is prevented, the strength of the motor support device for the ventilation fan is improved, and the support piece 5C is improved.
The supporting legs 3C can be combined by a simple linear movement.

As described above, according to the ventilation fan motor support device of the embodiment of the present invention, the strength of the ventilation fan motor support device is improved without spot welding the support leg portions 3C as in the conventional case. The assemblability can be improved.

Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, this embodiment differs from the first embodiment in that a cut-and-raised portion 11 is provided on the flat surface of one of the supporting legs 3D on the concave side of the holding portion 2, and A pair of support pieces 5D having a cut-and-raised portion 11 and a pair of support pieces 5D each having an engagement hole 12 opened at a target position with respect to the sandwiching portion 2 of the planar portion of the one support leg 3D is used as a support leg portion of one support piece 5D. The cut-and-raised portion 11 of the support leg portion 3D of the other support piece 5D in the engagement hole 12 of 3D, and the support leg of the one support piece 5D in the engagement hole 12 of the support leg portion 3D of the other support piece 5D. It is characterized in that the cut-and-raised parts 11 of the part 3D are engaged with each other and the planar parts are brought into contact with each other.

In the above structure, the cut-and-raised portion 11 is formed in the flat surface portion of the one support leg portion 3D of the support piece 5D, and the engaging hole 12 is provided in the flat surface portion of the other support leg portion 3D to support one support. One of the cut-and-raised portion 11 of the support leg 3D of the other support piece 5D and the engagement hole 12 of the support leg 3D of the other support piece 5D is provided in the engagement hole 12 of the support leg 3D of the piece 5D. By engaging the cut-and-raised parts 11 of the support legs 3D of the support piece 5D to form the motor support device for the ventilation fan, it is possible to prevent the support legs 3D from trying to shift in the contact surface direction. Therefore, the strength of the ventilation fan motor supporting device is improved, and the supporting leg portions 3D of the supporting piece 5D can be combined by a simple linear operation.

As described above, according to the ventilation fan motor supporting device of the embodiment of the present invention, the strength of the ventilation fan motor supporting device is improved without spot welding the supporting leg portions 3D as in the conventional case. The assemblability can be improved.

Next, a sixth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, this embodiment is different from the first embodiment in that a convex portion 13 is provided on the flat side portion of one supporting leg 3E on the concave side of the holding portion 2, and the other portion is formed. Support leg 3E
Support piece 5E in which a convex portion 13 and a concave portion 14 are provided on the convex side of the sandwiching portion 2 at a target position on the basis of the sandwiching portion 2 of the planar portion of
Two as a pair, the concave portion 14 of the supporting leg portion 3E of the one supporting piece 5E, the convex portion 13 of the supporting leg portion 3E of the other supporting piece 5E, and the concave portion of the supporting leg portion 3E of the other supporting piece 5E. It is characterized in that the convex portion 13 of the supporting leg portion 3D of the one supporting piece 5E is engaged with 14 and the planar portions are brought into contact with each other.

In the above structure, the convex portion 13 is provided on the planar portion of the one supporting leg portion 3E of the supporting piece 5E, and the concave portion 14 is provided on the planar portion of the other supporting leg portion 3E. The other support piece 5E is provided in the recess 14 of the support leg 3E.
Convex portion 13 of the supporting leg portion 3E and the other supporting piece 5
By engaging the convex portion 13 of the supporting leg portion 3E of the one supporting piece 5E with the concave portion 14 of the supporting leg portion 3E of E to form the motor support device for the ventilation fan, the supporting leg portions 3E are brought into contact with each other. Therefore, the strength of the ventilation fan motor support device is improved, and the support piece 5E is prevented.
The supporting legs 3E can be combined by a simple linear movement, and since the recess 14 does not penetrate the supporting legs 3E like the engaging holes, the supporting legs 3E are accordingly correspondingly.
Will be improved in strength.

As described above, according to the motor support device for the ventilation fan of the present invention, the strength of the motor support device for the ventilation fan is improved without spot welding the support leg portions 3E as in the conventional case. The assemblability can be improved.

[0044]

As is apparent from the above embodiments, according to the present invention, the strength of the supporting leg portion is improved by providing the folded-back portion at the side end portion of one supporting leg portion of the supporting piece.
Further, the planar portion of the supporting leg portion of the other supporting piece is inserted into the folded-back portion of the supporting leg portion of the one supporting piece, and they are polymerized and fixed so as to be fitted to each other to form the motor support device for the ventilation fan. This improves the strength of the motor support device for the ventilation fan without spot welding the support legs, eliminating the need to prepare large-scale equipment for spot welding, and also the process for treating spot welding marks. A motor support device for a ventilation fan can be provided which is unnecessary and has the effect of significantly reducing the manufacturing cost.

Further, by providing the first bent portion at the side end portion of one of the support legs of the support piece, the strength of the support leg portion is improved, and the first leg portion of the support leg portion of the one support piece is provided. The first bent portion of the other support piece is not provided in the bent portion, and the first bent portion of the support leg portion of the other support piece has the first bent portion of the other support piece. By forming the ventilation fan motor support device by abutting the side end portions of the support leg portion where the bent portion 1 is not provided, the strength of the ventilation fan motor support device can be obtained without spot welding the support leg portions. And the first bent portion is provided in a direction perpendicular to the planar portion of the support leg portion, so that the support leg portions of the support piece can be combined by a simple linear movement. To improve assemblability Can.

Further, by providing the first bent portion at the side end portion of one support leg portion of the support piece and the second bent portion at the side end portion of the other support leg portion, The strength is improved, and the first bent portion of the support leg portion of the one support piece has a side end portion opposite to the second bent portion of the support leg portion of the other support piece, and the other support piece. The first bent portion of the supporting leg portion of the supporting leg portion, the side end portion of the supporting leg portion of the one supporting piece opposite to the second bending portion portion, and the other side portion of the second leg portion of the supporting leg portion of the one supporting piece. The first leg of the support leg of one support piece to the second end of the support leg of the other support piece, and the second bend portion of the support leg of the other support piece. By forming the motor support device for the ventilation fan by abutting the side end portion on the opposite side to the bent portion, the support leg portions are connected to each other. Even without spot welding, the strength of the ventilation fan motor supporting device is improved, and the first bending portion and the second bending portion are provided in the direction perpendicular to the planar portion of the supporting leg portion, thereby supporting the supporting piece. Since the support legs can be combined by a simple linear movement, the assembling property can be improved.

Further, a convex portion is provided on a flat surface portion of one support leg portion of the support piece, and an engagement hole is provided on a flat surface portion of the other support leg portion so that the support leg portion of one support piece is engaged. Support the motor for the ventilation fan by engaging the convex part of the supporting leg of the other supporting piece with the hole and the convex part of the supporting leg of the one supporting piece with the engaging hole of the supporting leg of the other supporting piece. By forming the device, the strength of the motor support device for the ventilation fan is improved without spot welding the support legs, and the support legs of the support pieces can be combined by a simple linear movement. , Its assemblability can be improved.

In addition, a cut-and-raised portion is formed in a flat portion of one supporting leg portion of the supporting piece, and an engaging hole is provided in a flat portion of the other supporting leg portion so that the supporting leg portion of one supporting piece is engaged. The cut-and-raised part of the support leg of the other support piece is engaged with the dowel hole, and the cut-and-raised part of the support leg of the one support piece is engaged with the engaging hole of the support leg of the other support piece. By forming the motor support device for a fan, the strength of the motor support device for the ventilation fan is improved without spot welding the support legs, and the support legs of the support piece are combined by a simple linear movement. Therefore, the assembling property can be improved.

Further, a convex portion is provided on the plane portion of one support leg of the support piece, and a concave portion is provided on the plane portion of the other support leg portion, and the concave portion of the support leg portion of one support piece is formed on the other side. By engaging the convex portion of the supporting leg portion of the supporting piece and the concave portion of the supporting leg portion of the other supporting piece with the convex portion of the supporting leg portion of the one supporting piece to form the ventilation fan motor supporting device. , The strength of the motor support device for the ventilation fan is improved without spot welding the support legs, and the support legs of the support pieces can be combined by a simple linear movement, improving the assemblability. Can be made.

[Brief description of drawings]

FIG. 1 is a perspective view of a motor support device for a ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a motor support device for a ventilation fan according to the second embodiment.

FIG. 3 is a perspective view of a ventilation fan motor support device of the third embodiment.

FIG. 4 is a perspective view of a motor support device for a ventilation fan according to the fourth embodiment.

FIG. 5 is a perspective view of a motor support device for a ventilation fan of the fifth embodiment.

FIG. 6 is a perspective view of a motor support device for a ventilation fan of the sixth embodiment.

7 is a sectional view taken along line AB of FIG.

FIG. 8 is a perspective view of a conventional ventilation fan motor support device.

FIG. 9 is a perspective view showing a state in which the ventilation fan motor support device is fixed to the ventilation fan main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed part 2 Clamping part 3 Support leg part 3A Support leg part 3B Support leg part 3C Support leg part 3D Support leg part 3E Support leg part 4 Folding part 4A First bending part 5 Support piece 5A Support piece 5B Support piece 5C Support Piece 5D Support piece 5E Support piece 6 Holding portion 8 Second bent portion 9 Convex portion 10 Engagement hole 11 Cut-and-raised portion 12 Engagement hole 13 Convex portion 14 Recessed portion

Claims (6)

[Claims] 1. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat support legs extending in opposite directions from both ends of the sandwiching part, and one of the support legs. A pair of supporting pieces, each of which includes a folded-back portion extending in a U-shaped folding direction at one side end of the portion, and a fixed portion extending in the same right-angle direction from the respective tip portions of the support legs, are provided as a pair. The supporting piece of No. 2 is inserted into the folded-back portion of the supporting leg of one supporting piece and the flat portion of the supporting leg of the other supporting piece is inserted, and they are superposed and fixed so as to fit each other. An exhaust fan motor support device in which an annular motor support portion including the sandwiching portions is formed, and the fixing portions are fixed to opposite side surfaces of a frame-shaped exhaust fan main body and provided in a bridge shape. 2. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat supporting legs extending in opposite directions from both ends of the sandwiching part, and one of the supporting legs. A first bent portion extending in a direction perpendicular to the planar portion of the support leg at one side end of the portion, and a fixing portion extending in the same right-angle direction from the respective tip portions of the support leg. Side of the supporting leg portion in which the first bending portion of the supporting leg portion of one of the supporting pieces is not provided with the first bending portion of the other supporting piece. The end portion and the first bent portion of the support leg portion of the other support piece are brought into contact with the side end portions of the support leg portions on which the first bent portion of the one support piece is not provided, and in a planar shape. Supporting an annular motor having two sandwiching portions in the central portion by abutting the portions together A motor support device for a ventilation fan, which is formed in a bridge shape by fixing the fixing portions to opposite side surfaces of a frame-shaped ventilation fan body. 3. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat supporting legs extending in opposite directions from both ends of the sandwiching part, and one supporting leg of these supporting legs. First bent portion extending in a direction perpendicular to the planar portion of the supporting leg portion at one end of the first portion, and first bending portion of the one supporting leg portion of the other supporting leg portion A support including a second bent portion extending in the same direction as the first bent portion at a side end opposite to and a fixing portion extending in the same right angle direction from the respective tip portions of the support leg portions. A pair of two pieces is provided, and a first bent portion of a support leg portion of one of the support pieces has a side end portion opposite to the second bent portion of the support leg portion of the other support piece, And the second bent portion of the support leg of the one support piece to the first bent portion of the support leg portion of the other support piece. A side end opposite to the bent part, a second bend of the support leg of the one support piece, and a side end opposite to the first bend of the support leg of the other support piece;
And the second bent portion of the support leg portion of the other support piece is brought into contact with the side end portion of the support leg portion of the one support piece opposite to the first bent portion, and the planar portions are contacted with each other. In contact with each other, an annular motor support portion composed of the two holding portions is formed in the central portion, and the fixing portions are fixed to both side surfaces of the frame-shaped ventilation fan main body which face each other, and are provided in a bridge shape. Ventilation fan motor support device. 4. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat supporting legs extending in opposite directions from both ends of the sandwiching part, and one supporting leg of these supporting legs. Of the convex portion projecting to the concave side of the holding portion on the flat portion of the holding portion, and the engagement hole opened at the target position with the convex portion with the holding portion of the flat portion of the other support leg as a reference. When,
A pair of support pieces consisting of fixing portions extending in the same right-angle direction from the respective tip portions of the support leg portions are made into a pair, and the support leg portion of the other support piece is fitted into the engagement hole of the support leg portion of one support piece. Of the support leg of one support piece is engaged with the protrusion of the support leg of the other support piece and the engagement hole of the support leg of the other support piece, and the flat portions are brought into contact with each other, and An exhaust fan motor support device in which an annular motor support portion including the sandwiching portions is formed, and the fixing portions are fixed to opposite side surfaces of a frame-shaped exhaust fan main body and provided in a bridge shape. 5. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat supporting legs extending from opposite ends of the sandwiching part in opposite directions, and one supporting leg of the supporting legs. A cut-and-raised portion provided on the flat portion of the holding portion so as to project toward the concave side of the holding portion, and a member that is opened at the target position and the cut-and-raised portion with the holding portion of the flat portion of the other support leg as a reference. A pair of two support pieces, each of which includes a dowel hole and a fixed portion extending in the same right angle direction from the respective tip portions of the support leg portions, are provided in the engagement holes of the support leg portions of one support piece and the other support piece. The cut-and-raised part of the support leg of the other, and the engaging hole of the support leg of the other support piece with the cut-and-raised part of the support leg of the one support piece, and bring the planar parts into contact with each other. To form an annular motor support portion composed of the two holding portions in the central portion, A motor support device for a ventilation fan, wherein the fixing portions are fixed to opposite side surfaces of a frame-shaped ventilation fan main body and provided in a bridge shape. 6. A sandwiching part formed of a strip-shaped plate material in a semi-annular shape, flat support legs extending in opposite directions from both ends of the sandwiching part, and one of the support legs. A convex portion projecting on the concave side of the sandwiching portion on the planar portion of the holding portion, and the convex portion of the sandwiching portion at the target position with the convex portion on the basis of the sandwiching portion on the planar portion of the other supporting leg. Two supporting pieces, each of which is composed of a concave portion projecting toward the shape side and a fixing portion extending in the same right angle direction from the respective tip portions of the supporting leg portions, are provided.
As a pair, the concave portion of the supporting leg portion of the one supporting piece and the convex portion of the supporting leg portion of the other supporting piece, and the concave portion of the supporting leg portion of the other supporting piece of the supporting leg portion of the one supporting piece. Engage the convex parts and bring the flat parts into contact with each other,
An exhaust fan motor support device in which an annular motor support portion including the sandwiching portions is formed, and the fixing portions are fixed to opposite side surfaces of a frame-shaped exhaust fan main body and provided in a bridge shape.