JP3015581U - Blower casing - Google Patents

Abstract

(57) [Abstract] [Purpose] A sealing can be performed by bending a predetermined plate to form a flange without using a special sealing material and by normally assembling the plate. [Structure] The upper plate 1 and the side plate 11 are fixed to each other by inserting and caulking the projection 12u provided on the side plate 11 into the insertion hole 4 provided in the upper plate 1, and the side plate is inserted into the insertion hole 24 provided in the lower plate 21. In the casing of the blower in which the side plate 11 and the lower plate 21 are fixed by inserting and caulking the protrusion 12d provided on the side plate 11, the side plate 11 is attached with the protective sheet 51, and the protective sheet 51 is brought into contact with the upper plate 1. The upper flange 13u and the lower flange 13d that bring the protective sheet 51 into contact with the lower plate 21 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a casing of a blower called, for example, a turbo fan or a sirocco fan.

[0002]

[Prior art]

 FIG. 7 is an exploded perspective view showing a part of the parts constituting the casing of the conventional blower described above, and FIG. 8 is a side view in which a part of the state where the casing of the blower is subjected to sealing is cut away. In FIGS. 7 and 8, reference numeral 1 denotes a metal upper plate, a circular opening 2 whose center is eccentric from the center of the upper plate 1, and four mounting holes 3 for mounting a motor around the opening 2. An insertion hole 4 into which a protrusion 12u of the side plate 11 to be described later is inserted is provided at a predetermined interval on the peripheral edge.

Reference numeral 11 denotes a metal side plate, and projections 12u and 12d are provided on the upper and lower sides at predetermined intervals. The height of each of the protrusions 12u and 12d is slightly higher than the plate thickness of the upper plate 1 and the lower plate 21 described later. Reference numeral 21 denotes a metal lower plate, the center of which is eccentric from the center of the lower plate 21 and which has a larger diameter than the opening 2 of the upper plate 1 and four mounting holes 23 for mounting around the opening 22. And, the peripheral edge is provided with insertion holes 24 into which the projections 12d of the side plate 11 are inserted at predetermined intervals. Reference numeral 31 is a rotary blade rotated by a motor (not shown), and 41 is a sealing material.

Next, the assembly of the casing will be described. First, the side plate 11 is curved into a shape that follows the outer shapes of the upper plate 1 and the lower plate 21. Next, the protrusions 12 u of the side plate 11 are inserted into the insertion holes 4 of the upper plate 1, and the protrusions 12 d are inserted into the insertion holes 24 of the lower plate 21. Then, the protrusions 12u and 12d can be assembled from above and below, for example, by caulking both end portions, as shown in FIG.

Further, as shown in FIG. 8, a sealing material 41 is applied to the contact portion between the upper plate 1 and the side plate 11 from the inner side and the outer side to seal the inner portion and the inner portion of the contact portion between the side plate 11 and the lower plate 21. The assembly is completed by applying the sealing material 41 from the outside and sealing. By applying and sealing the sealing material 41 in this manner, air does not leak from the contact portion between the upper plate 1 and the side plate 11 and the contact portion between the side plate 11 and the lower plate 21.

[0006]

[Problems to be solved by the device]

 Since the casing of the conventional blower is sealed with the sealing material 41 so that air does not leak from the contact portion between the upper plate 1 and the side plate 11 and the contact portion between the side plate 11 and the lower plate 21, the normal assembly process is performed. In addition to this, a sealing process is required, which increases the number of steps. Then, in the sealing step, the sealing material 41 is applied from inside and outside to the contact portion between the upper plate 1 and the side plate 11, and the sealing material 41 is applied from inside and outside to the contact portion between the side plate 11 and the lower plate 21. Therefore, there were inconveniences such as complicated and difficult work.

The present invention has been made in order to eliminate the above-mentioned inconvenience, and a predetermined plate is bent to form a flange without using a special sealing material, and is normally assembled. It provides blower casing that can be sealed.

[0008]

[Means for Solving the Problems]

 This invention fixes the upper plate and the side plate by caulking the protrusion provided on at least one of the upper plate and the side plate, and caulks the protrusion provided on at least one of the side plate and the lower plate. In a casing of a blower that fixes the side plate and the lower plate by means of the side plate, a protective sheet is attached to the side plate, and an upper flange for bringing the protective sheet into contact with the upper plate and a lower flange for bringing the protective sheet into contact with the lower plate And Alternatively, the upper plate has a flange that allows the protective sheet attached to the upper surface to contact the side plate, and the lower plate has a flange that causes the protective sheet attached to the lower surface to contact the side plate.

[0009]

[Action]

 The casing of the blower according to the present invention has a protective sheet located between the upper plate and the upper flange of the side plate when the upper plate and the side plate are fixed by caulking a projection provided on at least one of the upper plate and the side plate. Or, the protective sheet located between the flange of the upper plate and the side plate functions as a sealing material. When the side plate and the lower plate are fixed by caulking the protrusions provided on at least one of the side plate and the lower plate, the protective sheet located between the lower flange of the side plate and the lower plate, or the side plate. The protective sheet located between the lower plate and the flange functions as a sealing material.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 shows a casing of a blower which is a first embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG. 9 is a perspective view showing the same or corresponding portions as those in FIGS. 7 and 8 and the description thereof will be omitted. Note that, also in each of the embodiments after FIG. 2, the same or corresponding parts will be denoted by the same reference numerals and description thereof will be omitted.

In FIG. 1, reference numeral 13 u denotes an upper flange of the side plate 11, the outer surface of which abuts on the upper plate 1 via a protective sheet 51 described later. Reference numeral 13d denotes a lower flange of the side plate 11, the outer surface of which contacts the lower plate 21 via the protective sheet 51. The protrusion 12u is provided on the base end side of the upper flange 13u, and the protrusion 12d is also provided on the base end side of the lower flange 13d.

Reference numeral 51 denotes a protective sheet, which is made of, for example, polypropylene, vinyl chloride, or the like into a film having a thickness of 70 μm to 200 μm, and is attached to protect the surface of the side plate 11 which is a metal plate. The same applies to the embodiments after FIG. 2, but the upper plate 1, the side plate 11 or the lower plate 21 to which the protective sheet 51 is attached is processed in the state where the protective sheet 51 is attached.

Next, the assembly of the casing will be described. First, the side plate 11 is curved into a shape that follows the outer shapes of the upper plate 1 and the lower plate 21. Next, the protrusions 12 u of the side plate 11 are inserted into the insertion holes 4 of the upper plate 1, and the protrusions 12 d are inserted into the insertion holes 24 of the lower plate 21. Then, when the protrusions 12u and 12d are caulked from above and below, for example, both end portions are caulked, the assembly is completed as shown in FIG. 1 (b).

When the casing is assembled in this way, the casing is positioned between the upper plate 1 and the upper flange 13u of the side plate 11, and between the lower flange 13d of the side plate 11 and the lower plate 21. The protective sheet 51 functions as a sealing material, and air does not leak from the contact portion between the upper plate 1 and the side plate 11 and the contact portion between the side plate 11 and the lower plate 21.

As described above, according to the first embodiment of the present invention, since the protective sheet 51 can be used as the sealing material and the protective sheet 51 makes surface contact with the upper plate 1 and the lower plate 21, a special sheet is used. Reliable sealing can be performed without using a sealing material. Then, the side plate 11 is bent to form the upper and lower flanges 13u and 13d, and sealing can be performed by normally assembling. Therefore, the assembling process including the sealing becomes a simple operation, and The man-hour is reduced.

FIG. 2 shows a casing of an air blower according to a second embodiment of the present invention. (A) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. It is a perspective view which shows a part. In FIG. 2, reference numeral 5 denotes a notch provided in the peripheral edge of the upper plate 1, which is provided in place of the insertion hole 4 in the first embodiment. Reference numeral 25 denotes a notch provided in the peripheral edge of the lower plate 21, which is provided in place of the insertion hole 24 in the first embodiment.

The projection 12u is provided on the tip side of the upper flange 13u, and the projection 12d is also provided on the tip side of the lower flange 13d. The heights of the projections 12u and 12d are, for example, the upper plate 1 and the lower plate 21. The height is 3 to 5 times the plate thickness.

Next, the assembly of the casing will be described. First, the side plate 11 is curved into a shape that follows the outer shapes of the upper plate 1 and the lower plate 21. Next, each protrusion 12u of the side plate 11 is inserted into each notch 5 of the upper plate 1, and is bent and crimped as shown in FIG. 2 (b). Further, each protrusion 12d is inserted into each notch 25 of the lower plate 21, and is bent and crimped as shown in FIG. 2B, whereby the assembly is completed.

According to the second embodiment, the same effect as that of the first embodiment can be obtained, and the protective sheet 51 is provided on the upper plate in all length directions of the upper and lower flanges 13u and 13d. Since it comes into surface contact with 1 and the lower plate 21, the sealing property is further improved. Although the projections 12u and 12d are crimped in separate steps in the above description, they may be crimped simultaneously.

FIG. 3 shows a casing of a blower which is a third embodiment of the present invention, (a) is a perspective view showing a part of the upper plate, side plates and lower plate before assembly, and (b) is a diagram after assembly. It is a perspective view which shows a part. In FIG. 3, 14u indicates an upright portion formed at the tip of the upper flange 13u, and 14d indicates an upright portion formed at the tip of the lower flange 13d. The inner peripheral surfaces of the upright portions 14u and 14d, the upper plate 1, and the lower plate 21 are shown. Faces the end face of a small gap. The protrusion 12u is provided in the middle of the upper flange 13u, and the protrusion 12d is also provided in the middle of the lower flange 13d.

Next, since the assembly is the same as that of the first embodiment shown in FIG. 1, the description of the assembly is omitted, but the same effect as that of the second embodiment shown in FIG. 2 can be obtained. .

FIG. 4 shows a casing of a blower according to a fourth embodiment of the present invention, (a) is a perspective view showing a part of the upper plate, side plates and lower plate before assembly, and (b) is a diagram after assembly. It is a perspective view which shows a part. In FIG. 4, reference numeral 6 denotes a protrusion provided on the peripheral edge of the upper plate 1, which is provided in place of the insertion hole 4 in the first embodiment. Reference numeral 15u denotes an insertion hole provided in the upper flange 13u of the side plate 11, and 15d denotes an insertion hole provided in the lower flange 13d of the side plate 11, which is provided in place of the projections 12u, 12d in the first embodiment.

Reference numeral 26 denotes a protrusion provided on the peripheral edge of the lower plate 21, which is provided in place of the insertion hole 24 in the first embodiment. The protective sheet 51 is attached to the inner surface of the side plate 11.

Next, since the assembly is the same as that of the first embodiment shown in FIG. 1, the description of the assembly is omitted, but the same effect as that of the second embodiment shown in FIG. 2 can be obtained. .

FIG. 5 shows a casing of an air blower according to a fifth embodiment of the present invention. (A) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a structure after assembly. It is a perspective view which shows a part. In FIG. 5, reference numeral 7 denotes a flange formed on the peripheral edge of the upper plate 1, and a portion between the protrusions 6 is bent downward in an arc shape. Reference numeral 27 denotes a flange formed on the peripheral edge of the lower plate 21, and a portion between the protrusions 26 is bent upward in an arc shape.

The protective sheet 51 is attached to the upper surface that is the outer surface of the upper plate 1, and is attached to the lower surface that is the outer surface of the lower plate 21. The height of each of the protrusions 6 and 26 is slightly higher than the plate thickness of the side plate 11.

Next, the assembly of the casing will be described. First, the side plate 11 is curved into a shape that follows the outer shapes of the upper plate 1 and the lower plate 21. Next, each protrusion 6 of the upper plate 1 is inserted into each insertion hole 15u of the side plate 11, and each protrusion 26 of the lower plate 21 is inserted into each insertion hole 15d of the side plate 11. Then, when the projections 6 and 26 are caulked, the assembly is completed as shown in FIG. 5 (b).

According to the fifth embodiment, the same effect as that of the second embodiment can be obtained, and since the upper and lower flanges 13u and 13d are not provided on the side plate 11, the side plate 11 is Since the upper plate 1 and the lower plate 21 can be freely curved, the outer shapes of the upper plate 1 and the lower plate 21 can be small, and the side plate 11 can be curved to have a small curvature.

FIG. 6 shows a casing of a blower which is a sixth embodiment of the present invention, (a) is a perspective view showing a part of the upper plate, the side plate and the lower plate before assembly, and (b) is the one after assembly. It is a perspective view which shows a part. In FIG. 6, each projection 6 is provided with an insertion hole 4.

Next, since the assembly is the same as that of the first embodiment shown in FIG. 1, the description of the assembly is omitted, but the same effect as that of the fifth embodiment shown in FIG. 5 can be obtained. .

In each embodiment, the projections 6, 12u, 12d, 26 for crimping, the insertion holes 4, 15u, 15d, 24 and the notches 5, 25 are provided with the upper plate 1, the side plate 11, the lower plate 21. Although the example has been described in which it is provided on one side, it may be provided on both sides.

[0032]

[Effect of device]

 As described above, according to the present invention, the protective sheet can be used as the sealing material, the protective sheet is located between the upper plate and the upper flange of the side plate, and the lower sheet of the side plate is provided between the lower flange and the lower plate. Or the protective sheet is located between the flange of the upper plate and the side plate, and is located between the side plate and the flange of the lower plate for surface contact, so a special sealing material is used. It is possible to provide a reliable sealing without

Then, the side plate is bent to form the upper and lower flanges, or the upper plate and the lower plate are bent to form the flanges, and sealing is performed by normally assembling. As a result, the assembly process including sealing becomes a simple operation and the man-hours are reduced.

[Brief description of drawings]

FIG. 1 shows a casing of a blower according to a first embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 2 shows a casing of a blower according to a second embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 3 shows a casing of a blower which is a third embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 4 shows a casing of a blower according to a fourth embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 5 shows a casing of a blower according to a fifth embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 6 shows a casing of a blower which is a sixth embodiment of the present invention, (a) is a perspective view showing a part of an upper plate, side plates and a lower plate before assembly, and (b) is a part after assembly. FIG.

FIG. 7 is an exploded perspective view showing a part of components constituting a casing of a conventional blower.

FIG. 8 is a partially cutaway side view of a state in which the casing of the blower has been subjected to sealing treatment.

[Explanation of symbols]

 1 Upper Plate 2 Opening 3 Mounting Hole 4 Insertion Hole 5 Notch 6 Protrusion 7 Flange 11 Side Plate 12u, 12d Protrusion 13u Upper Flange 13d Lower Flange 14u, 14d Standing Part 15u, 15d Insertion Hole 21 Upper Plate 22 Opening 23 Mounting Hole 24 Insertion Hole 25 Notch 26 Protrusion 27 Flange 51 Protective Sheet

Claims (2)

[Scope of utility model registration request] 1. Fixing the upper plate and the side plate by caulking a protrusion provided on at least one of the upper plate and the side plate, and caulking a protrusion provided on at least one of the side plate and the lower plate. In the casing of the blower that fixes the side plate and the lower plate by means of the side plate, a protective sheet is attached, and the upper flange for bringing the protective sheet into contact with the upper plate and the protective sheet with the lower plate. A blower casing having a lower flange that allows the blower to have a lower flange. 2. The upper plate and the side plate are fixed by caulking a protrusion provided on at least one of the upper plate and the side plate, and the protrusion provided on at least one of the side plate and the lower plate is caulked. In the casing of the blower that fixes the side plate and the lower plate by, the upper plate has a flange for abutting the protective sheet attached to the upper surface to the side plate, the lower plate was attached to the lower surface A blower casing, comprising a flange for bringing a protective sheet into contact with the side plate.