JP6274332B2 - Manufacturing method of fan mounting part - Google Patents

Description

  The present invention relates to a method for manufacturing a fan mounting portion, and more particularly to a method for manufacturing a fan mounting portion for mounting a fan in a cooling garment.

Conventionally, a cooling garment equipped with a fan has been used as a garment worn when working in a high-temperature environment such as an ironworks or an outdoor construction site in summer.
This fan includes a fan main body and a fixing ring for attaching the fan main body to the cooling garment. The fan is pushed into the mounting hole from the front side of the cooling garment, and the fixing ring is attached from the back side. At this time, the fan is attached to the fan attachment portion of the cooling garment by the flange portion of the fan main body and the end portion of the fixing ring sandwiching the edge portion of the attachment hole.

The manufacturing method of the fan attachment part of this patent document 1 mainly comprises five processes.
In the first step, a first frame-like line having a shape that is the same as or slightly larger than the shape of the outer edge of the tubular portion is applied to the lining at the position where the fan mounting portion is formed in the sheet-like member. Suture along.
Next, in the second step, an opening hole smaller than the shape of the first frame-like line is formed inside the stitched portion that is a seam formed by stitching along the first frame-like line.
In the third step, a plurality of cuts are made in the sheet-like member and the backing between the opening hole and the stitching portion so as to go from the opening hole to the stitching portion and not reach the stitching portion.
Further, in the fourth step, the non-stretchable ring-shaped reinforcing plate having the inner edge slightly larger than the outer edge shape of the cylindrical portion is brought into contact with the sheet-like member, and the opening hole is formed in the inner edge of the reinforcing plate. The entire lining is pulled out to the side on which the reinforcing plate is arranged through the opening hole, and the first insertion part which is a part of the sheet-like member cut in the third step and The opening part which inserts a cylindrical part is formed by turning over with the 2nd incision part which is the part of the lining in which it cut | incised in the 3rd process, and folding back outside.
Finally, in the fifth step, the sheet-like member and the lining are stitched so as to surround the opening along the second frame-like line having a shape larger than the shape of the first frame-like line.

Japanese Patent No. 5672642

In the method of manufacturing the fan mounting portion, it is required that the reinforcing plate sandwiched between the fan main body and the fixing ring can be easily arranged at an accurate position and that the fan mounting portion on which the fan can be stably mounted can be manufactured.
Here, in the method of manufacturing the fan mounting portion of Patent Document 1, after making a plurality of cuts in the sheet member and the lining, the plastic reinforcing ring (reinforcing plate) is in contact with the sheet member and the opening hole is formed in the reinforcing plate. It arrange | positions so that it may surround with an inner edge, Then, an opening part is formed by pulling out the whole lining to the side by which the reinforcement ring is arrange | positioned through an opening hole, and folding back to the outer side of a stitching | suture part. Therefore, when an operator pulls out the entire lining to the side where the reinforcing ring is disposed through the opening hole, the operator must press the reinforcing ring so that it does not deviate from a predetermined position.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a fan mounting portion that does not require time and effort for mounting a fan main body and can stably mount the fan main body.

  The manufacturing method of the fan mounting portion of the present invention is to manufacture a fan mounting portion to which the fan main body is mounted by having a mounting hole and sandwiching between the flange portion of the fan main body and the ring-shaped fixing member. , Stitching a sheet member to one surface of the outer material, creating a stitching frame with a diameter smaller than the outer diameter of the fan body, and stitching by forming a through hole inside the stitching frame A remaining portion creating step for creating a remaining portion between the frame and the through hole, a plurality of cuts including an edge of the through hole in the remaining portion, and a cut portion forming step for forming a surface cut portion and a sheet member cut portion; After the recessed portion forming step, the sheet member is pulled out to the other surface of the outer material through the through hole, and the sheet member drawing step for forming the mounting hole, and after the sheet member drawing step, the ring-shaped reinforcing plate is reinforced. Sheet material in the hole of the plate The reinforcing plate mounting step that guides to the periphery of the mounting hole and installs between the other surface of the outer material and the sheet member and along the outer edge of the mounting hole, and after the reinforcing plate mounting step, the periphery of the mounting hole And a reinforcing plate fixing step of fixing the reinforcing plate.

  The manufacturing method of the fan attachment part of this invention arrange | positions a reinforcement board between a surface material and a surface material cutting part in a reinforcement board attachment process, It is characterized by the above-mentioned.

  The fan mounting portion manufacturing method of the present invention is characterized in that the reinforcing plate is disposed between the sheet member and the sheet member cut portion in the reinforcing plate mounting step.

  The manufacturing method of the fan mounting portion of the present invention is characterized in that the reinforcing plate is made of plastic, and the reinforcing plate is stitched together with the outer material and the sheet-like member in the reinforcing plate fixing step.

  Moreover, the manufacturing method of the fan attachment part of this invention can sew a reinforcement board with a surface material and a sheet-like member in a reinforcement board fixing process. By sewing the reinforcing plate together with the outer material and the sheet member, the reinforcing plate can be firmly fixed around the mounting hole.

It is a figure which shows the fan attachment part produced by the preparation method of the fan attachment part which concerns on embodiment of this invention. (A) Cooling garment in which a fan mounting portion is formed, (b) Enlarged view of the fan mounting portion It is a figure which shows the fan with which the fan attachment part produced by the production method of the fan attachment part which concerns on embodiment of this invention was mounted | worn. (A) Partial sectional view, (b) Partial enlarged view It is a figure for demonstrating the sewing frame preparation process of the preparation methods of the fan attaching part which concerns on embodiment of this invention. (A) A state in which a sheet member is arranged on the outer material, (b) a state in which a stitching frame is created It is a figure for demonstrating the through-hole formed in the notch part formation process of the manufacturing method of the fan attaching part which concerns on embodiment of this invention. It is a figure for demonstrating the notch part formed in the notch part formation process of the manufacturing method of the fan attaching part which concerns on embodiment of this invention. It is a figure for demonstrating the sheet | seat member extraction process of the manufacturing method of the fan attaching part which concerns on embodiment of this invention. (A) State in the process of pulling out the sheet member, (b) State in which the sheet member is pulled out It is a figure which shows the fan attachment part after the heating pressurization process of the manufacturing method of the fan attachment part which concerns on embodiment of this invention. It is a top view which shows the reinforcement ring (reinforcement board) used with the preparation methods of the fan attaching part which concerns on embodiment of this invention. It is a figure for demonstrating the reinforcement board attachment process of the manufacturing method of the fan attachment part which concerns on embodiment of this invention. It is a figure for demonstrating the reinforcement board fixing process of the preparation methods of the fan attaching part which concerns on embodiment of this invention. It is sectional drawing of the fan attachment part produced by the production method of the fan attachment part which concerns on embodiment of this invention. (A) A state in which the reinforcing plate is disposed between the outer material and the outer material notch portion (b) A state in which the reinforcing plate is disposed between the sheet member and the sheet member notch portion It is sectional drawing of the fan attachment part produced by the preparation method of the fan attachment part which concerns on the modification of embodiment of this invention. (A) A state in which the reinforcing plate is disposed between the outer material and the outer material notch portion (b) A state in which the reinforcing plate is disposed between the sheet member and the sheet member notch portion

A method for manufacturing the fan mounting portion according to the present embodiment will be described with reference to FIGS.
As shown in FIG. 1A, this method for producing the fan attachment portion is a method for producing a fan attachment portion 3 for attaching the fan 2 to the cooling garment 1.

First, the fan mounting portion 3 and the fan 2 mounted on the fan mounting portion 3 will be described.
The fan mounting portion 3 is formed on the waist of the back surface of the cooling garment 1 and is formed one by one in a symmetrical position with respect to an axis that bisects the width direction of the cooling garment 1.
As shown in FIG. 1B, the fan mounting portion 3 includes a surface material 20, a sheet member 30, and a reinforcing ring 40 as a reinforcing plate attached between the surface material 20 and the sheet member 30. A mounting hole 4 is formed in the fan mounting portion 3, and the fan 2 is mounted in the mounting hole 4.
The fan 2 takes in external air and discharges the taken air toward the body. The fan 2 is mounted in the mounting hole 4 and two fans 2 are provided on the waist of the body. As shown in FIG. 2, the fan 2 includes a fan main body 5 having an outer diameter OD1 and a fixing ring 6 as an annular fixing member, and sandwiching the outer material 20 and the seat member 30 by the flange 10 and the fixing ring 6, It is mounted in the mounting hole 4. The fan body 5 is formed with a plurality of air intake ports (not shown) and air discharge ports 7. The fan body 5 includes an axial fan 8 that takes in air outside the cooling garment 1 and discharges the air into the cooling garment 1, and a motor (not shown) that drives the axial fan 8. A locking claw 9 is formed on the side of the fan body 5. A flange 10 is formed on the outer periphery of the bottom of the fan main body 5 toward the outside.
A locking projection 11 is formed on the inner peripheral surface of the fixing ring 6, and the locking ring 11 is locked with the locking claw 9, whereby the fixing ring 6 and the fan body 5 are fixed.

Next, the manufacturing method of the fan attachment part which concerns on this embodiment is demonstrated.
In the present embodiment, a method for producing a fan mounting portion of the cooling garment 1 made of fabric will be described. This method of manufacturing the fan mounting portion mainly includes seven steps.
The first is a stitching frame creation step in which the stitching frame 41 is created by stitching the sheet member 30 to one surface (front surface 21) of the outer fabric 20. The second is a remaining portion creation step of creating a remaining portion 43 between the suture frame 41 and the through hole 42 by forming the through hole 42 inside the suture frame 41. The third is a notch forming step in which a plurality of cuts including the edge of the through hole 42 are made in the remaining part 43 to form the top cut 23 and the sheet member cut 33. The fourth is a sheet member drawing process in which the attachment member 4 is formed by pulling out the sheet member 30 to the other surface (back surface 22) of the surface material 20 through the through hole 42 after the notch forming process. The fifth is a heating and pressurizing process for extending the drawn sheet member 30 by the heating and pressurizing process. The sixth is a reinforcing plate attaching step for attaching the reinforcing ring 40 between the outer material 20 and the sheet member 30 after the sheet member drawing step. The seventh is a reinforcing plate fixing step for fixing the reinforcing ring 40 by sewing the periphery of the mounting hole 4 after the reinforcing plate mounting step.
Hereinafter, each step will be described in detail.

[Suture frame creation process]
In the stitching frame creation step, a stitching frame 41 that is an edge portion of the attachment hole 4 is created.
Specifically, as illustrated in FIG. 3A, a rectangular sheet member 30 is disposed on the front surface 21 of the outer material 20. The outer material 20 and the sheet member 30 are made of the same material.
Then, as shown in FIG. 3B, a sewing frame 41 is created by sewing the sheet member 30 and the outer material 20 in a circular shape by a commercial sewing machine or hand stitching. A diameter D1 of the stitching frame 41 is made slightly smaller than the outer diameter OD1 of the fan body 5. For example, when the outer diameter of the fan body 5 is 90 mm, the diameter D1 of the stitching frame 41 is 89 mm.
The sheet member 30 may use a material different from that of the outer material 20.

[Remainder creation process]
Next, as shown in FIG. 4, the sheet member 30 and the outer material 20 are cut out in a circular shape so that the inside of the stitching frame 41 is concentric with the stitching frame 41, thereby forming a through hole 42 having a diameter D2.
Since the through hole 42 is formed inside the suture frame 41, the diameter D <b> 2 of the through hole 42 is smaller than the diameter D <b> 1 of the suture frame 41. By forming the through hole 42 having a diameter smaller than the diameter D <b> 1 of the suture frame 41, a remaining portion 43 is formed between the circle edge of the through hole 42 and the suture frame 41.

[Incision formation process]
In the cut portion forming step, a plurality of cut portions are created in the sheet member 30 and the outer material 20.
Specifically, as shown in FIG. 5, a straight cut is made in the remaining portion 43 from the edge of the through hole 42 toward the suture frame 41 corresponding to the outer periphery of the through hole 42, and the sheet member cut portion 33 and the surface cut part 23 are formed, respectively. This cut is formed slightly before the suture frame 41.
A plurality of sheet member cut portions 33 and surface cut portions 23 are formed, for example, 24 pieces are formed in FIG.
The incision is preferably formed toward the stitching frame 41 corresponding to the outer periphery of the circle edge of the through hole 42, but can also be formed obliquely from the circle edge toward the stitching frame 41.

[Sheet member drawing process]
In the sheet member drawing process, the sheet member 30 is pulled out to the back surface 22 of the outer material 20.
Specifically, as shown in FIG. 5, the four corners of the sheet member 30 are pulled in the direction of the through hole 42 (the direction of the arrow). 6A, after pulling the apexes of the four corners of the sheet member 30 to the vicinity of the center of the through hole 42, the sheet member 30 is passed through the through hole 42 as shown in FIG. 6B. The attachment hole 4 is formed by pulling out to the back surface 22 of the outer material 20. At this time, the back surface 32 of the sheet member 30 appears on the back surface 22 of the outer material 20.
Further, when the sheet member 30 is pulled out to the back surface 22 of the surface material 20, the sheet member 30, the surface material cut portion 23, and the sheet member cut portion 33 are substantially along the stitching frame 41 on the back surface 22 side of the surface material 20. Wrapped.

[Heating and pressing process]
Since the sheet member 30 is a fabric, when the sheet member 30 is pulled out to the back surface 22 of the outer material 20, a swelling (swelling) occurs, and the attachment hole 4 may not have a desired shape.
In the warming and pressurizing process, the drawn sheet member 30 is extended by the warming and pressurizing process, and the mounting hole 4 having a diameter D3 is formed in a desired shape.
In this heating and pressurizing treatment step, for example, an iron can be used, and the sheet member 30 is stretched and flattened by heating and pressing from the back surface 32 of the sheet member 30. Then, as shown in FIG. 7, in addition to the formation of the attachment hole 4 having a desired shape, the sheet member 30 is stretched, and the fabric does not rise. Since the sheet member 30 is folded substantially along the stitching frame 41, the diameter D3 of the attachment hole 4 is substantially equal to the diameter D1 of the stitching frame 41.

[Reinforcement plate installation process]
In the reinforcing plate fixing step, the reinforcing plate is attached around the attachment hole 4 along the outer edge.
As this reinforcing plate, for example, a ring-shaped reinforcing ring 40 having an inner diameter D4 as shown in FIG. 8 can be used. The reinforcing ring 40 is made of a material that has low elasticity and can be sewn. The reinforcing ring 40 can be made of plastic, such as polypropylene. Further, the thickness of the reinforcing ring 40 is designed to be about 0.2 mm, and the inner diameter D4 of the reinforcing ring 40 is designed to be substantially the same as the diameter D3 of the mounting hole 4.
In this reinforcing plate fixing process, when the reinforcing ring 40 is attached, it is performed so that a large external force is not applied to the reinforcing ring 40.

The reinforcement ring 40 is attached around the attachment hole 4 as shown in FIG. 9 by inserting the sheet member 30 into the hole of the reinforcement ring 40. As a method for attaching the reinforcing ring 40, for example, the four corners of the sheet member 30 are lifted upward, and the four corners are inserted into the holes of the reinforcing ring 40. Then, the hole of the reinforcing ring 40 moves while contacting the front surface 31 of the sheet member 30, and the reinforcing ring 40 is guided to the periphery of the mounting hole 4.
At this time, the reinforcing ring 40 is disposed between the outer material 20 and the outer material cut portion 23 or between the sheet member 30 and the sheet member cut portion 33. Since the sheet member 30 is expanded in the heating and pressurizing process, after the reinforcing ring 40 is attached, the sheet member 30 returns to the original position, and the shape of the attachment hole 4 is not deformed.
The method for attaching the reinforcing ring 40 is not limited to the above method as long as the reinforcing ring 40 can be disposed around the attachment hole 4 without being deformed. For example, one of the four corners of the sheet member 30 can be inserted into the hole of the reinforcing ring 40 first, and the corners of the other sheet members 30 can be sequentially inserted.

[Reinforcement plate fixing process]
In the reinforcing plate fixing step, the reinforcing ring 40 is fixed around the mounting hole 4.
As shown in FIG. 10, the sheet member 30, the sheet member notch portion 33, the outer material 20, and the outer material notch portion 23 are sewn into a circular shape with a commercial sewing machine from above where the reinforcing ring 40 is disposed. The frame line 45 is formed. Then, the outer frame line 46 is formed by stitching the outer frame of the sheet member 30.
Fig.11 (a) has shown AA sectional drawing in FIG. From the bottom, the sheet member 30, the sheet member cut portion 33, the outer cut portion 23, the reinforcing ring 40, and the outer cover 20 are stitched in this order, and the reinforcing ring 40 is fixed around the attachment hole 4.
When the reinforcing ring 40 is disposed between the sheet member 30 and the sheet member cut portion 33, as shown in FIG. 11 (b), the sheet member 30, the reinforcing ring 40, and the sheet member cut from below are provided. The portion 33, the outer cut portion 23, and the outer cover 20 are stitched in this order, and the reinforcing ring 40 is fixed around the attachment hole 4.

Next, the effect of the method for manufacturing the fan mounting portion according to the present embodiment will be described.
In the method for producing the fan attachment portion, the reinforcement plate 40 is attached after the attachment hole 4 having a desired shape is formed in order to perform the reinforcement plate attachment step after the sheet member drawing step and the heating and pressurizing treatment step. This eliminates the need for pressing the reinforcing ring 40 so that it does not deviate from the predetermined position. This saves the labor of the operator and improves the workability when manufacturing the fan mounting portion 3.
Further, by attaching the reinforcing ring 40 after the sheet member 30 is pulled out to the back surface 22 of the outer surface 20, external force applied to the reinforcing ring 40 when the sheet member 30 is pulled out can be avoided. Therefore, deformation of the reinforcing ring 40 can be prevented, and the fan 2 can be stably mounted in the mounting hole 4.

In the stitching frame creation step of the method for fabricating the fan mounting portion according to the present embodiment, the stitching frame having a diameter smaller than the outer diameter OD1 of the fan body 5 is obtained by stitching the sheet member 30 to the front surface 21 of the outer fabric 20. 41 is created. Therefore, the diameter D3 of the mounting hole 4 is formed slightly smaller than the outer diameter OD1 of the fan body 5.
Then, when the fan main body 5 is mounted in the mounting hole 4, the fan main body 5 comes into close contact with the inner edge of the mounting hole 4, so that force is applied to the fan main body 5 from the inner edge of the mounting hole 4. It becomes difficult to fall off.
Therefore, when the fan body 5 is mounted in the mounting hole 4 with the fixing ring 6, the operator can work without paying great attention to the fact that the fan body 5 falls out of the mounting hole 4.

In the conventional technique, a plastic reinforcing ring is attached between the sheet member and the outer surface, and then ironed from above the sheet member to extend and flatten the sheet member.
Since the reinforcing ring is made of plastic, the reinforcing ring may be uneven due to heat from the iron. If irregularities are formed in the reinforcing ring, there is a problem that a gap is formed in a part between the flange portion and the fixing ring, and the fan is not stably fixed.

In the heating and pressurizing treatment step, the fan mounting portion manufacturing method of the present embodiment attaches the reinforcing ring 40 after the sheet member 30 is stretched with an iron, so that the reinforcing ring 40 is not deformed by the heat of the iron. .
Then, since the reinforcing ring 40 is not deformed, the fan 2 can be stably attached to the mounting hole 4.
Furthermore, in the method for manufacturing the fan mounting portion of the present embodiment, the reinforcing ring 40 is stitched together with the outer material 20 and the sheet-like member 30 in the reinforcing plate fixing step. By sewing the reinforcing ring 40 together with the outer material 20 and the sheet member 30, the reinforcing ring 40 can be firmly fixed around the attachment hole 4. Therefore, the position of the reinforcing ring 40 can be prevented from shifting, and the fan can be stably mounted in the mounting hole 4.

[Modification]
Next, a modification of this embodiment will be described.
This modification is different in the reinforcing plate fixing step as compared with the above-described method of manufacturing the fan mounting portion. Hereinafter, the description of the same steps as the above-described method of manufacturing the fan mounting portion will be omitted, and the method of fixing the reinforcing ring 40 will be described in detail.
In this modification, the outer diameter of the reinforcing ring 40 is smaller than the outer diameter of the reinforcing ring 40 described above.
In the reinforcing plate attaching step, after being arranged around the attaching hole 4, a frame line 45 having an outer diameter slightly larger than the outer diameter of the reinforcing ring 40 is formed as a commercial sewing machine. Then, the reinforcing ring 40 is fixed to a region formed between the stitching frame 41 and the frame line 45 as shown in FIG. 12 (a) or (b).

The reinforcing ring 40 is fixed in this region and fixed around the mounting hole 4, whereby the reinforcing ring 40 can be prevented from being displaced or dropped out.
Further, when the metal reinforcing ring 40 is used as the reinforcing plate, the reinforcing ring 40 may not be sewn. At that time, the metal reinforcing ring 40 can be fixed around the mounting hole 4 by forming a frame 45 having an outer diameter larger than the outer diameter of the reinforcing ring 40.

Although the present embodiment has been described above, the configuration described in the above embodiment can be selected or changed to other configurations as appropriate without departing from the gist of the present invention. .
For example, in the present embodiment, the example in which the diameter D1 of the sewing frame 41 is formed to be slightly smaller than the outer diameter OD1 of the fan main body 5 has been shown, but this diameter D1 is the same as the outer diameter OD1 of the fan main body 5 or The outer diameter OD1 of the main body 5 can be made larger.
In the present embodiment, the example in which the fan 2 in which the flange 10 protrudes from the fan main body 5 in the substantially vertical direction is mounted is shown. it can. In this case, the length between the opposing flanges 10 and the diameter D3 of the mounting hole 4 are designed to be substantially the same.

  The reinforcing plate only needs to be formed of a material that does not deform when the fan 2 is mounted in the mounting hole 4, and a metallic reinforcing ring 40 can be used in addition to the plastic reinforcing ring 40. Furthermore, a reinforcement board is not limited to a ring-shaped thing, For example, the some reinforcement board which cut | disconnected the reinforcement ring 40 can be used. In this case, since it is not necessary to pass the sheet member 30 through the hole of the ring, the reinforcing plate can be disposed without receiving an external force from the sheet member 30.

  In the present embodiment, the cooling garment 1 is an example in which a fabric material is used. However, for example, a nylon fabric material can also be used. In this case, the heating and pressurizing process can be omitted, and the reinforcing ring 40 can be fixed while pulling the sheet member 30 lightly in the outer peripheral direction in the reinforcing plate fixing process. Even when a nylon fabric is used, a heating cloth can be applied with an iron covering from above.

DESCRIPTION OF SYMBOLS 1 Cooling clothes 2 Fan 3 Fan mounting part 4 Mounting hole 5 Fan main body 6 Fixing ring (fixing member)
7 Air discharge port 8 Axial fan 9 Locking claw 10 Flange 11 Locking protrusion 20 Surface 21 Front surface 22 Back surface 23 Surface cut portion 30 Sheet member 31 Front surface 32 Back surface 33 Sheet member cut portion 40 Reinforcement ring (reinforcement plate)
41 Suture frame 42 Through hole 43 Remaining portion 45 Frame line 46 Outer frame line OD1 Outer diameter (outer diameter of fan body)
D1 diameter (diameter of suture frame)
D2 diameter (diameter of through hole)
D3 Diameter (Mounting hole diameter)
D4 Inner diameter (Inner diameter of reinforcing ring)

Claims (4)

In the method of manufacturing a fan mounting part, which has a mounting hole and has a fan mounting part to which the fan main body is mounted by being sandwiched between a flange part of the fan main body and a ring-shaped fixing member,
Stitching a sheet member to one surface of the outer material to create a stitching frame having a diameter smaller than the outer diameter of the fan body; and
A remaining portion creating step for creating a remaining portion between the suture frame and the through hole by forming a through hole inside the suture frame;
In the remaining portion, a plurality of cuts including the edge of the through hole, a cut portion forming step of forming a surface cut portion and a sheet member cut portion,
After the notch portion forming step, the sheet member is drawn through the through hole to the other surface of the surface material, and a sheet member drawing step for forming the attachment hole,
After said sheet member withdrawing step, a ring-shaped plastic reinforcing plate having a diameter and a same inner diameter of the mounting hole, by inserting the sheet member into the hole of the reinforcing plate, guided to the circumference of the attachment hole A reinforcing plate mounting step for mounting between the other surface of the outer material and the sheet member and along an outer edge of the mounting hole;
A reinforcing plate fixing step of fixing the reinforcing plate by sewing around the mounting hole after the reinforcing plate mounting step;
A method for producing a fan mounting portion. In the reinforcing plate mounting step,
The reinforcing plate is disposed between the outer material and the outer material cutting part,
The method for producing a fan mounting portion according to claim 1. In the reinforcing plate mounting step,
The reinforcing plate is disposed between the sheet member and the sheet member cut portion,
The method for producing a fan mounting portion according to claim 1. Prior Symbol reinforcement plate fixing step, the reinforcing plate, suturing with the outer material and the sheet-like member,
The method for manufacturing a fan mounting portion according to any one of claims 1 to 3, wherein the fan mounting portion is provided.

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