Sheet with fan fitting part

Abstract

To provide a sheet with a fan fitting part where the fan fitting part is easily made on the sheet-like member.SOLUTION: A sheet 1 with a fan fitting part includes: a sheet-like member 10; an opening hole 20 that is formed on the sheet-like member 10 and passes a cylindrical part of a fan therethrough; and a non-stretchable, flat and annular reinforcing member 30 that is fastened to an end of the sheet-like member 10 around the opening hole 20 and has an inner edge in an approximately same shape as the shape of an outer edge of the cylindrical part. Among faces of the reinforcing member 30, the faces except for one face fastened to the end of the sheet-like member 10 are exposed without being covered by the sheet-like member 10. The fan is fitted to the fan fitting part by inserting the cylindrical part of the fan into the inner edge of the reinforcing member 30 and sandwiching the end of the sheet-like member 10 around the opening hole 20 and an end of the reinforcing member 30 with predetermined portions of the fan.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet with a fan mounting part, which has a fan mounting part for attaching a fan used in, for example, air-circulating mats and air-conditioned clothing that evaporate sweat from the human body by circulating air, to a sheet-like member such as cloth. [Background technology]

[0002] In recent years, air-circulating mats and air-conditioned clothing that evaporate sweat from the human body by circulating air have been put to practical use (see, for example, Patent Documents 1 and 2). For example, air-conditioned clothing is sewn from a material that does not easily leak air, and two fan mounting parts for mounting fans are provided on the lower back side of the air-conditioned clothing. When a fan is attached to the fan mounting parts and operated, a large amount of outside air is taken into the air-conditioned clothing from the fan. The taken-in outside air flows upward parallel to the human body and is discharged, for example, from around the collar or the cuffs. As the outside air flows inside the air-conditioned clothing, it evaporates sweat from the human body, and the heat of vaporization generated during the evaporation can lower the temperature of the body surface (see, for example, Patent Document 3).

[0003] Next, a method for manufacturing air-conditioned clothing will be described. Here, the case where the air-conditioned clothing is air-conditioned work clothing will be considered. Prior to the explanation, a method for manufacturing general work clothing will be briefly described. To manufacture general work clothing, first, fabric is cut according to a pattern corresponding to the work clothing to be manufactured, and cloth parts for each part are made. In the case of general work clothing, there are more than ten cloth parts. Next, zippers, buttons, etc. are attached to the cloth parts in the specified parts. After that, the cloth parts are sewn together to complete the general work clothing.

[0004] The manufacturing method of the air-conditioned clothing is significantly different from the manufacturing method of general work clothing in that it includes a process of providing a fan attachment part for attaching a fan to a fabric part in a part corresponding to the lower rear side of the air-conditioned clothing. Here, a sheet with a fan attachment part is a sheet-like member such as a fabric or a fabric part in which a fan attachment part is provided. There are roughly two methods for manufacturing the air-conditioned clothing. One of the methods is to directly fabricate a fan attachment part in the fabric part itself in the part corresponding to the lower rear side of the air-conditioned clothing. The other method is to fabricate a sheet with a fan attachment part in advance, in which a fan attachment part is provided on a small sheet-like member such as a fabric, rather than a fabric part of the air-conditioned clothing, and attach this to the fabric part in the part corresponding to the lower rear side of the air-conditioned clothing by sewing. In the following, for convenience, the former method is referred to as the method using the own sheet method, and the latter method is referred to as the method using the other sheet method.

[0005] In the method using the self-sheet method, the fan attachment part needs to be made into a fabric part at the sewing site, but the fabric part is cut from the fabric used for the air-conditioned clothing itself, so there is little discomfort in appearance. On the other hand, in the method using the other-sheet method, for example, a rectangular piece of fabric of an appropriate size according to the size of the fan can be used as the material to mass-produce a sheet with a fan attachment part at a site other than the sewing site. Therefore, by using such a mass-produced sheet with a fan attachment part, even a general sewing company that does not own the equipment or skills required for processing the fan attachment part can manufacture the air-conditioned clothing. Here, from an economic point of view, it is not rational to use the fabric used for the air-conditioned clothing itself as the fabric material, and it is desirable to use a fabric of a different material. In this case, since the fabric used for the air-conditioned clothing and the fabric used for the sheet with the fan attachment part are made of different materials, there may be some discomfort in appearance, but it is advantageous in terms of manufacturing costs.

[0006] Conventionally, in most air-conditioned clothing, fans are attached to two places on the rear side. However, since the waist may get too cold or the fan may get in the way when riding in a car, it is often desired to attach the fan to the side of the torso. FIG. 12 is a schematic side view of a general work suit. Usually, in general work clothes, the cloth parts 200 are sewn together at a position directly to the side as shown in FIG. 12. Here, the seam 210 formed by the sewing is shown by a broken line. In the air-conditioned clothing, the cloth parts 200 are sewn together at a position directly to the side as in the general work clothes, so it is difficult to create a fan attachment part in the sewn part by the self-sheet method. In contrast, in the method by the other-sheet method, the sheet with the fan attachment part can be easily attached across the adjacent cloth parts 200, so it is possible to attach the fan to the position directly to the side.

[0007] Whether an air-flow mat, air-conditioning clothing, etc. is manufactured using the self-sheet method or the other-sheet method, the fan used therein needs to be securely attached to the sheet-like member so that air does not leak from the fan attachment part in order to enhance the air-conditioning effect. On the other hand, when washing the air-flow mat, air-conditioning clothing, etc., it is necessary for the user to be able to easily remove the fan from the sheet-like member.

[0008] For this reason, it is desirable to use a fan having the structure shown in Fig. 12 of Patent Document 2 as a fan used in an air-conditioned suit or the like. Such a fan includes a fan body and an annular locking member for attaching the fan body to a sheet-like member. The fan body has a hollow cylindrical portion and a flange portion protruding from the upper end of the cylindrical portion in a direction substantially perpendicular to the side surface of the cylindrical portion. The annular locking member is inserted on the outside of the cylindrical portion, and the end of the sheet-like member around the opening hole formed in the sheet-like member is sandwiched between the back surface of the flange portion and the end face of the annular locking member facing the flange portion, and the locking piece provided on the cylindrical portion is engaged with the protrusion provided on the annular locking member, thereby attaching the fan to the sheet-like member.

[0009] Since the sheet-like member used in air-conditioned clothing and the like is stretchable, if a fan mounting part is simply formed with an opening hole for mounting the fan on the sheet-like member, the fan will easily come off the sheet-like member when a strong force acts on the fan. For this reason, Patent Document 2 proposes using a fan mounting part that has an opening hole for mounting the fan and a non-stretchable material provided on the end of the sheet-like member around the opening hole. Specifically, the fan mounting part with this non-stretchable material is made as follows. That is, first, a hole is formed in a predetermined place on the sheet-like member, and then the part of the sheet-like member around the hole is folded back to the back side. Next, a ring-shaped non-stretchable material is inserted between the overlapping sheet-like members that are overlapped by the folding back. Then, a cloth is applied from the back side to the part of the sheet-like member into which the non-stretchable material is inserted, and the sheet-like member and the cloth are sewn with thread at that part. In this way, the opening hole is formed and the non-stretchable material is sewn around it. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent No. 4399765 [Patent Document 2] Republished Patent No. WO2006 / 009108 [Patent Document 3] JP 2005-54299 A Summary of the Invention [Problem to be solved by the invention]

[0011] However, in the above-mentioned method of making a fan attachment part, when folding back the portion of the sheet-like member around the hole and inserting the non-stretchable material between the overlapping sheet-like member that is formed by folding back, it is difficult to arrange the opening hole into an accurate circular shape, and the work is time-consuming. Also, when applying fabric from the back side to the portion of the sheet-like member where the non-stretchable material has been inserted and sewing the sheet-like member and fabric together with thread at that portion, it is necessary to pay close attention to maintain the shape of the opening hole, and the work is not only time-consuming but also difficult for beginners, as it can only be performed by experienced people.

[0012] The present invention has been made in light of the above circumstances, and has an object to provide a seat with a fan mounting portion that allows a fan mounting portion to be easily created on a sheet-like member. [Means for solving the problem]

[0013] In order to achieve the above-mentioned object, the present invention provides a sheet with a fan mounting portion for mounting a fan, which comprises a fan main body having a cylindrical portion and a protrusion provided on the cylindrical portion so as to protrude in a direction approximately perpendicular to the side of the cylindrical portion, and a locking member that is inserted into the outside of the cylindrical portion and attached to the fan main body in a state facing the protrusion, the sheet comprising: a sheet-like member having an opening hole formed therein for passing the cylindrical portion of the fan; and a non-elastic, flat, annular reinforcing means having an opening of approximately the same shape as the outer edge of the cylindrical portion of the fan, one of the front and back faces being fixed to the end of the sheet-like member around the opening hole, and the inner surface being exposed, the fan being mounted by inserting the cylindrical portion into the opening of the reinforcing means and attaching the locking member to the fan main body, and at least the end of the reinforcing means, of the end of the sheet-like member and the end of the reinforcing means around the opening hole, being sandwiched between the protrusion and the locking member.

[0014] According to the above configuration, in the present invention, one of the front and back surfaces of the reinforcing means is fixed to the end of the sheet-like member around the opening hole. Therefore, when preparing a fan mounting portion for mounting a fan on the sheet-like member, it is not necessary to perform the conventional work of folding the sheet-like member, inserting the reinforcing means into the folded portion of the sheet-like member, and applying a lining to the sheet-like member at that portion, so that the fan mounting portion can be easily prepared on the sheet-like member. In addition, since the end of the sheet-like member around the opening hole can be reinforced by the non-stretchable reinforcing means so that the end does not expand or contract, the fan will not easily come off the fan mounting portion even if a strong force is applied between the fan and the reinforcing means or between the fan and the sheet-like member. Furthermore, since the inner surface of the reinforcing means is exposed, if only one of the front and back surfaces of the reinforcing means is fixed to the end of the sheet-like member, the surfaces of the reinforcing means other than the one surface fixed to the end of the sheet-like member are exposed without being covered by the sheet-like member, and the inner surface of the fan mounting portion for mounting the fan becomes the inner surface of the reinforcing means. Therefore, by producing the reinforcing means with high precision in shape and size, the fan mounting portion can be formed with high precision in shape and size. Effect of the Invention

[0015] In the seat with a fan attachment part according to the present invention, the fan attachment part can be easily fabricated on the sheet-like member. Furthermore, even if a strong force is applied between the fan and the reinforcing means or between the fan and the sheet-like member, the fan will not easily come off the seat attachment part. [Brief description of the drawings]

[0016] [Figure 1] Figure 1(a) is a schematic front view of a seat with a fan mounting portion which is the first embodiment of the present invention, Figure 1(b) is a schematic back view of the seat with a fan mounting portion, and Figure 1(c) is a schematic partial cross-sectional view of the seat with a fan mounting portion as viewed in the direction of the arrow AA. [Diagram 2]Figure 2(a) is a schematic side view showing the appearance when a fan used in air-circulating mats, air-conditioned clothing, etc. is inserted into an opening hole in a sheet with a fan mounting portion of the first embodiment, Figure 2(b) is a schematic side view of the annular locking member in the fan, and Figure 2(c) is a schematic side view showing the appearance when the fan is attached to the fan mounting portion. [Diagram 3] FIG. 3 is a schematic partial cross-sectional view showing the state in which the fan is attached to the fan attachment portion. [Figure 4] FIG. 4 is a view for explaining a first step and a second step in the method for producing a sheet with a fan attachment part according to the first embodiment. [Diagram 5] FIG. 5 is a view for explaining a third step in the method of manufacturing the sheet with a fan attachment portion. [Figure 6] FIG. 6 is a schematic partial cross-sectional view showing a state in which a fan is attached to a fan attachment portion in a modified example of the first embodiment. [Figure 7] FIG. 7(a) is a schematic back view of a seat with a fan attachment part according to a second embodiment of the present invention, and FIG. 7(b) is a schematic partial cross-sectional view of the seat with a fan attachment part as viewed in the direction of arrow BB. [Figure 8] FIG. 8 is a diagram illustrating a first step and a second step in the method of manufacturing a sheet with a fan attachment part according to the second embodiment. [Figure 9] Figure 9(a) is a schematic back view of a sheet with a fan mounting portion which is the third embodiment of the present invention, and Figure 9(b) is a diagram for explaining the state when the sheet with a fan mounting portion is attached to a specific fabric part of an air-conditioned suit. [Figure 10] FIG. 10(a) is a schematic rear view of a seat with a fan attachment portion that is a modified example of the third embodiment, and FIG. 10(b) is a schematic partial cross-sectional view of the seat with a fan attachment portion as viewed in the direction of the arrow DD. [Figure 11] FIG. 11 is a diagram showing a typical configuration of a seat with a fan attachment part according to the present invention. [Figure 12] FIG. 12 is a schematic side view of a typical work suit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0018] [First embodiment] First, a first embodiment of the present invention will be described with reference to the drawings. Fig. 1(a) is a schematic front view of a seat with a fan attachment part according to the first embodiment of the present invention, Fig. 1(b) is a schematic back view of the seat with a fan attachment part, and Fig. 1(c) is a schematic partial cross-sectional view of the seat with a fan attachment part as seen in the direction of the arrow AA. Fig. 2(a) is a schematic side view showing a state in which a fan used in an air circulation mat or air-conditioned clothing is inserted into an opening of the seat with a fan attachment part according to the first embodiment, Fig. 2(b) is a schematic side view of an annular locking member in the fan, and Fig. 2(c) is a schematic side view showing a state in which the fan is attached to the fan attachment part. Fig. 3 is a schematic partial cross-sectional view showing a state in which the fan is attached to the fan attachment part.

[0019] The sheet with a fan attachment part of the first embodiment is a sheet-like member provided with a fan attachment part for attaching a fan used in air-circulating mats and air-conditioned clothing that evaporate sweat from the human body by circulating air. As shown in Fig. 1, this sheet with a fan attachment part 1 comprises a sheet-like member 10, an opening 20, and a non-stretchable flat annular reinforcing member (reinforcing means) 30. The sheet-like member 10 is the target on which the fan attachment part is provided, and the fan attachment part is composed of the opening 20, an end of the sheet-like member 10 around the opening 20, and the reinforcing member 30.

[0020] The sheet 1 with fan attachment parts of the first embodiment is used when manufacturing air-conditioned clothing or the like by a self-sheet method. For this reason, the sheet-like member 10 is made by cutting the fabric used for the air-conditioned clothing itself. The material of this sheet-like member 10 is, for example, a normal woven fabric. The sheet-like member 10 has a front and a back. That is, the surface located on the front side of the air-conditioned clothing manufactured using the sheet 1 with fan attachment parts is the front side of the sheet-like member 10, and the surface located on the back side of the air-conditioned clothing is the back side of the sheet-like member 10. Also, following the positional relationship of the front and back sides of the sheet-like member 10, the surface on the side that is in the same positional relationship as the front side of the sheet-like member 10 in each part is also called the front side, and the surface on the side that is in the same positional relationship as the back side of the sheet-like member 10 is also called the back side.

[0021] A brief description will now be given of a fan 100 used in an air-flow mat, air-conditioned clothing, and the like. As shown in FIG. 2, the fan 100 includes a fan body 110 in which a motor and a propeller are housed, and an annular locking member 120 attached to the fan body 110. The fan body 110 includes a cylindrical portion 111 and a flange portion 112 protruding from the upper end of the cylindrical portion 111 in a direction substantially perpendicular to the side surface of the cylindrical portion 111. The outer shape of a cross section of the cylindrical portion 111 cut along a plane perpendicular to its central axis is a circle. Here, the outer diameter F of the cylindrical portion 111 is 64.5 mm. The locking member 120 is a dedicated tool for attaching the fan body 110 to the fan attachment portion of the seat 1 with a fan attachment portion. The cylindrical portion 111 of the fan body 110 is provided with two locking claws 113. Meanwhile, protrusions (not shown) are provided on the inner surface of locking member 120 to engage with each locking claw 113 and fix locking member 120 to the outer surface of tubular portion 111. Therefore, by inserting locking member 120 into the outside of tubular portion 111 and engaging it with fan body 110, locking member 120 can be easily attached to fan body 110 in a state facing flange portion 112.

[0022] The opening 20 in the sheet 1 with a fan attachment portion is for passing the cylindrical portion 111 of the fan 100, and is formed at a predetermined location in the sheet-like member 10. In the first embodiment, as shown in Figs. 1(a) and (b), the shape of the opening 20 is circular. The diameter of the opening 20 is approximately the same as or larger than the outer diameter F of the cylindrical portion 111. In the first embodiment, the opening 20 having approximately the same diameter as the outer diameter F of the cylindrical portion 111 is formed in the sheet-like member.

[0023] The reinforcing member 30 is a flat annular member having an opening of substantially the same shape as the shape of the outer edge of the cylindrical portion 111 of the fan 100. In the first embodiment, as shown in FIG. 1(b), the reinforcing member 30 is annular and has an inner diameter (diameter of the opening) of substantially the same size as the outer diameter F of the cylindrical portion 111. Therefore, the inner diameter of the reinforcing member 30 and the diameter of the opening hole 20 are substantially the same. The material of the reinforcing member 30 is a washable material that is not very stretchable and can be sewn. Specifically, any of the following materials can be used: plastic, resin-impregnated cloth, artificial leather, and non-stretchable rubber. In particular, in the first embodiment, the reinforcing member 30 is made of polypropylene and has a thickness of 0.5 mm, an inner diameter of 65 mm, an outer diameter of 73 mm, and a width of 4 mm. In fact, the reinforcing member 30 can be easily manufactured with high accuracy by punching a polypropylene sheet. Note that the reinforcing member 30 is opaque.

[0024] The reinforcing member 30 is fixed to the end of the sheet-like member 10 around the opening hole 20 on the back surface of the sheet-like member 10. That is, the surface of the reinforcing member 30 is fixed to the end of the sheet-like member 10 around the opening hole 20. Specifically, the reinforcing member 30 is fixed to the sheet-like member 10 by sewing the reinforcing member 30 and the end of the sheet-like member 10 around the opening hole 20 with thread 40. Here, in Figs. 1(a) and (b), the seam 41 formed by this sewing operation is shown by a broken line. The reinforcing member 30 and the sheet-like member 10 are sewn in a circular shape approximately near the center of the reinforcing member 30. At this time, the surfaces of the reinforcing member 30 other than the surface fixed to the end of the sheet-like member 10 are exposed without being covered by the sheet-like member 10. Therefore, as shown in Fig. 1(c), the inner surface 31 of the reinforcing member 30 is exposed.

[0025] Here, the relationship between the inner diameter and outer diameter of the reinforcing member 30 and the diameter of the opening hole 20 will be described. In general, the diameter of the opening hole 20 is approximately the same as or larger than the inner diameter (diameter of the opening) of the reinforcing member 30. When the diameter of the opening hole 20 is made larger than the inner diameter of the reinforcing member 30, the outer diameter of the reinforcing member 30 must be larger than the diameter of the opening hole 20. This is because the reinforcing member 30 needs to be attached to the end of the sheet-like member 10 around the opening hole 20. As described above, in the first embodiment, the opening hole 20 having a diameter approximately the same as the inner diameter of the reinforcing member 30 is formed in the sheet-like member 10. As a result, when the reinforcing member 30 is fixed to the end of the sheet-like member 10 around the opening hole 20, as shown in FIG. 1(c), the entire lower surface (front surface) of the reinforcing member 30 contacts the end of the sheet-like member 10 around the opening hole 20, and as shown in FIG. 1(a), the reinforcing member 30 cannot be seen from the front side of the sheet-like member 10.

[0026] Incidentally, the end of the sheet-like member 10 around the opening 20 needs to be treated to strengthen the fabric. For example, when two pieces of woven fabric are sewn together, a force in the direction of peeling the two pieces of woven fabric may be applied to the two pieces of woven fabric during use, so the two pieces of woven fabric need to have sufficient sewing strength according to the intended use. In fact, if two pieces of woven fabric are simply overlapped and sewn together, when a force is applied to the sewn part in the direction of peeling the two pieces of woven fabric, the thread located on the edge side of the sewn part will fray, and the two pieces of woven fabric will easily peel off. As a general method for preventing this, for example, there is a method in which the edge parts of each of the two pieces of woven fabric are folded back to make them double, and then the doubled parts are overlapped and the two pieces of woven fabric are sewn together. Also, even if one of the objects to be sewn is a fabric and the other is made of a material that does not fray, the fabric needs to be reinforced. Therefore, fabric strengthening treatment means both a treatment for ensuring that two components, at least one of which is made of fabric, retain sufficient strength after sewing, and a treatment for preventing fraying of threads in the fabric component.

[0027] In the sheet 1 with a fan attachment part of the first embodiment, as shown in Fig. 1(c), a fabric reinforcement process utilizing an anchor effect is applied to a portion X of the sheet-like member 10 around the opening hole 20 on the back surface of the sheet-like member 10. Specifically, a predetermined resin is welded to the portion X of the sheet-like member 10 around the opening hole 20 to increase the strength of the portion X of the sheet-like member 10 and prevent fraying of threads. Then, after the inner edge of the reinforcing member 30 and the opening hole 20 are accurately aligned, the reinforcing member 30 and the end of the sheet-like member 10 around the opening hole 20 are circularly sewn together with thread 40 to be integrated, as shown in Figs. 1(a) and 1(b).

[0028] To attach the fan 100 to the sheet 1 with a fan attachment part of the first embodiment, first, the cylindrical part 111 of the fan body 110 is inserted into the opening of the reinforcing member 30 so that the lower surface of the flange part 112 comes into contact with the edge of the sheet-like member 10 around the opening hole 20 as shown in FIG. 2(a). Next, the locking member 120 is inserted outside the cylindrical part 111 so that the end of the sheet-like member 10 and the end of the reinforcing member 30 around the opening hole 20 are sandwiched between the lower surface of the flange part 112 and the upper surface of the locking member 120 as shown in FIG. 3, and in this sandwiched state, the locking claw 113 provided on the cylindrical part 111 is engaged with the protrusion provided on the locking member 120, thereby attaching the locking member 120 to the fan body 110. In this way, the fan 100 is attached to the fan attachment part as shown in FIG. 2(c). Here, when the fan 100 is attached to the fan attachment portion, the reinforcing member 30 and the locking member 120 are in direct contact with each other, and the inner surface 31 of the reinforcing member 30 is in direct contact with the outer surface of the cylindrical portion 111 .

[0029] Next, a method for producing the sheet 1 with fan attachment parts of the first embodiment will be described. The method of manufacturing the sheet 1 with a fan attachment part of the first embodiment comprises a first step of reinforcing the fabric at predetermined portions of the sheet-like member 10, a second step of forming openings 20 in the sheet-like member 10, and a third step of sewing the reinforcing members 30 and the sheet-like member 10. Figure 4 is a diagram for explaining the first and second steps in the method of manufacturing the sheet 1 with a fan attachment part of the first embodiment, and Figure 5 is a diagram for explaining the third step in the method of manufacturing the sheet 1 with a fan attachment part.

[0030] When carrying out the first step, a circular reinforcement sheet 60 as shown in Fig. 4(a) is prepared. This reinforcement sheet 60 is made of polypropylene and has a diameter of 75 mm and a thickness of about 0.2 mm. In the first step, the reinforcement sheet 60 is first placed under the sheet-like member 10 as shown in Fig. 4(b).

[0031] Next, as shown in FIG. 4(b), a horn 70 for an ultrasonic welding machine having a ring-shaped pressing surface is pressed onto the sheet-like member 10 so that its central axis coincides with the central axis of the sheet 60 for reinforcement treatment. Here, the inner diameter of the horn 70 for an ultrasonic welding machine is smaller than the outer diameter F of the cylindrical portion 111. On the other hand, it is desirable that the outer diameter of the horn 70 is larger than the diameter of the sheet 60 for reinforcement treatment. When the horn 70 is then ultrasonically vibrated, the portion of the sheet 60 for reinforcement treatment corresponding to the horn 70 melts or softens, and bites into the back surface of the sheet-like member 10. In this way, polypropylene resin is welded to a predetermined portion of the back surface of the sheet-like member 10, thereby increasing the strength of that portion. In FIG. 4(c), the ring-shaped portion X to which the polypropylene resin is welded, i.e., which has been subjected to reinforcement treatment, is indicated by diagonal lines when the sheet-like member 10 is viewed from its back surface.

[0032] Next, in the second step, a cutter having a cutting blade with a diameter approximately equal to the outer diameter F of the tubular portion 111 is used to cut the reinforced portion X as shown in Fig. 4(d) to open an opening 20 in the sheet-like member 10. This narrows the width of the portion X. Here, since polypropylene resin is welded to the reinforced portion X, the threads located on the cut surface will not fray.

[0033] Next, in the third step, the reinforcing member 30 and the sheet-like member 10 are sewn together using a sewing machine. In the sewing step in the third step, a predetermined sewing jig is used. The sewing jig 81 is formed in a substantially cylindrical shape as shown in FIG. 5(a). Here, the outer diameter of the sewing jig 81 is substantially the same as the inner diameter of the reinforcing member 30. The upper part of the sewing jig 81 is chamfered. In the third step, first, as shown in FIG. 5(b), the sewing jig 81 is placed on a table 82 of the sewing machine. Next, the reinforcing member 30 is inserted into the sewing jig 81. Thereafter, the sheet-like member 10 is inserted into the sewing jig 81 with the surface to which the polypropylene resin was welded in the first step facing down. In this way, the reinforcing member 30 and the sheet-like member 10 are overlapped. 5(b), the reinforcing member 30 and the sheet-like member 10 are sewn together in a circular shape using a sewing machine with the pillar portion 83 of the presser foot of the sewing machine abutting at a right angle against the side wall of the sewing jig 81. In this manner, the seat 1 with fan attachment parts of the first embodiment is produced.

[0034] In the above first step, the case where the fabric is strengthened by welding the resin to the sheet-like member 10 has been described, but the fabric may be strengthened, for example, by applying a commercially available fray stopper to the sheet-like member 10. In addition, for example, when the sheet-like member 10 is made of a material that is laminated, has no fraying, and has sufficient strength to withstand sewing, such as a material used for rainwear, the first step of strengthening the fabric at a predetermined portion of the sheet-like member 10 can be omitted.

[0035] In the sheet with a fan attachment part of the first embodiment, since the reinforcing member is fixed to the end of the sheet-like member around the opening hole, when making the sheet with a fan attachment part, it is not necessary to perform the conventional work of folding the sheet-like member, inserting the reinforcing member into the folded part of the sheet-like member, and applying a lining to the sheet-like member at that part, so that the fan attachment part can be easily made on the sheet-like member. In addition, since the end of the sheet-like member around the opening hole can be reinforced by the non-stretchable reinforcing member so that the end does not expand and contract, even if a strong force is applied between the fan and the reinforcing member or between the fan and the sheet-like member, the fan will not easily come off the sheet attachment part. Furthermore, since the surfaces of the reinforcing member other than the one surface fixed to the end of the sheet-like member are exposed without being covered by the sheet-like member, the inner surface of the fan attachment part is the inner surface of the reinforcing member, if the shape and size of the reinforcing member are made with high accuracy, the shape and size of the fan attachment part can be formed with high accuracy.

[0036] In addition, in the seat with a fan mounting part of the first embodiment, the entire surface of the reinforcing member is completely covered by the sheet-like member, so that when the fan is removed from the fan mounting part, the reinforcing member cannot be seen from the outside, and the appearance of the air-conditioned suit, etc. is not impaired. Furthermore, the back surface of the sheet-like member, the portion of the sheet-like member around the opening hole, is subjected to a fabric reinforcement treatment utilizing the anchor effect, so that fraying of the threads in that portion can be effectively prevented. In addition, the reinforcing member and the portion of the sheet-like member that has been subjected to the reinforcement treatment are sewn together, so that the reinforcing member can be firmly attached to the sheet-like member.

[0037] In the above first embodiment, an opening having a diameter substantially equal to the inner diameter of the reinforcing member is formed in the sheet-like member, and the entire surface of the reinforcing member is covered with the sheet-like member. However, the diameter of the opening may be larger than the inner diameter (diameter of the opening) of the reinforcing member. FIG. 6 is a schematic partial cross-sectional view showing a state in which the fan is attached to the fan attachment part in a modified example of the first embodiment. In this case, as shown in FIG. 6, only a part of the upper surface (surface) of the reinforcing member 30 is covered with the sheet-like member 10, and when the fan 100 is attached to the fan attachment part, only the end of the reinforcing member 30 around the opening 20 is sandwiched between the lower surface of the flange portion 112 and the upper surface of the locking member 120.

[0038] [Second embodiment] Next, a seat with a fan attachment part according to a second embodiment of the present invention will be described. Fig. 7(a) is a schematic rear view of the seat with a fan attachment part according to the second embodiment of the present invention, and Fig. 7(b) is a schematic partial cross-sectional view of the seat with a fan attachment part as seen in the direction of the arrow BB. In the second embodiment, parts having the same functions as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0039] As shown in Fig. 7, the sheet with a fan attachment part 1a of the second embodiment includes a sheet-like member 10a, an opening hole 20, and a non-stretchable flat annular reinforcing member (reinforcing means) 30a. This sheet with a fan attachment part 1a is used when manufacturing air-conditioned clothing and the like mainly by a self-sheet method. The sheet with a fan attachment part 1a of the second embodiment differs from the sheet with a fan attachment part 1 of the first embodiment in that the sheet-like member 10a is fray-stopped as a fabric reinforcement treatment performed in general sewing work, and that a transparent reinforcing member 30a is used. The other configurations are the same as those of the first embodiment.

[0040] Specifically, as shown in FIG. 7(b), a plurality of cuts 13 are made in the end of the sheet-like member 10a around the opening hole 20, and the portion of the sheet-like member 10a where the cuts 13 are made is folded back. Here, the portion of the sheet-like member 10a where the cuts 13 are made is also referred to as the "cut portion 14". Then, each cut portion 14 and the portion of the sheet-like member 10a overlapping it are bonded. Thus, in the second embodiment, the end of the sheet-like member 10a around the opening hole 20 is doubled to increase its strength and prevent fraying of the thread. Also, as shown in FIG. 7(c), the reinforcing member 30a is fixed to the end (doubled portion) of the sheet-like member 10a around the opening hole 20 on the back side of the sheet-like member 10a.

[0041] Next, a method for producing the sheet with fan attachment parts 1a of the second embodiment will be described. The method for producing the sheet with a fan attachment part 1a of the second embodiment includes a first step of forming an opening hole 20 and a cut 13 in the sheet-like member 10a, a second step of strengthening the fabric of a predetermined portion of the sheet-like member 10a, and a third step of sewing the reinforcing member 30a and the sheet-like member 10a together. Figure 8 is a diagram for explaining the first and second steps in the method for producing the sheet with a fan attachment part 1a of the second embodiment. Here, Figure 8(d) is a schematic cross-sectional view taken along the CC arrow in Figure 8(c).

[0042] In the first step, a dedicated cutting machine is used to open holes 20 at predetermined locations in the sheet-like member 10a, and multiple cuts 13 are made in the edge of the sheet-like member 10a around the opening holes 20, as shown in Fig. 8(a). Here, in the first step, a circular hole with a diameter of 55 mm is opened as the opening hole 20. The multiple cuts 13 are made radially in a ring-shaped portion of the sheet-like member 10 surrounded by a circle C1 with a diameter of 55 mm and a circle C2 with a diameter of 65 mm, which are the edges of the opening hole 20. This ring-shaped portion is made of multiple cut portions 14 divided by the cuts 13.

[0043] The above-mentioned value of 65 mm, which is the length of the slit 13 to be made in the sheet-like member 10, corresponds to an outer diameter of 64.5 mm of the cylindrical portion 111 of the fan 100. However, since the sheet-like member 10 used in air-conditioned clothing and the like is stretchable, the above value does not specify the exact length of the slit 13. Similarly, the values ​​described in this specification for the dimensions, etc. of the sheet-like member 10 do not specify exact values.

[0044] Next, the second step is performed. When performing the second step, a ring-shaped adhesive sheet 15 is prepared. The adhesive sheet 15 is made of polypropylene and has an inner diameter of 65 mm, an outer diameter of 75 mm, and a thickness of 0.2 mm. In the second step, the sheet-like member 10a is placed on the ironing board with its back side facing up. Then, as shown in FIG. 8(b), the adhesive sheet 15 is placed on the sheet-like member 10a with its central axis coinciding with the central axis of the opening hole 20. After that, as shown in FIG. 8(c), the cut portions 14 in the sheet-like member 10a are folded back onto the adhesive sheet 15. At this time, if an iron is used and the tip of the iron is used to press the cut portions 14 while folding them back, creases can be made at the folded portions, so that each cut portion 14 can be reliably prevented from returning to its original state. Note that the cut portions 14 may be folded back mechanically using a dedicated device, not limited to an iron.

[0045] Next, the horn 70 for the ultrasonic welding machine used in the first embodiment is pressed against the sheet-like member 10a in the portion corresponding to the folded-back cut portion 14. When the horn 70 is ultrasonically vibrated, the adhesive sheet 15 melts, and as shown in FIG. 8(d), the molten adhesive sheet (polypropylene resin) bonds each cut portion 14 to the portion of the sheet-like member 10a overlapping it. In this way, the end portion of the sheet-like member 10a around the opening hole 20 is doubled, which increases the strength of the end portion and prevents fraying of the thread. In addition, since each cut portion 14 is folded back in the second step, the diameter of the opening hole 20 is expanded from 55 mm to 65 mm.

[0046] As described above, the polypropylene adhesive sheet 15 is used as an adhesive for adhering the cutout portion 14 to the overlapping portion of the sheet-like member 10a. Therefore, the adhesive sheet is not limited to the polypropylene adhesive sheet 15, and any sheet that exhibits the effect of an adhesive can be used. In this case, the adhesive method is not limited to ultrasonic welding, and any adhesive method suitable for the material used, such as heat welding using a heater, can be used.

[0047] Next, in the third step, a sewing machine is used to sew the reinforcing member 30a and the sheet-like member 10. The sewing operation in this third step is the same as the third step in the first embodiment. Here, in FIG. 7(a), the circular seam 41 formed by this sewing operation is shown by a dashed line. In this way, a sheet 1a with a fan attachment portion as shown in FIG. 7 is produced.

[0048] The sheet with a fan attachment part of the second embodiment has substantially the same functions and effects as the sheet with a fan attachment part of the first embodiment. However, when producing the sheet with a fan attachment part of the second embodiment, it is necessary to fold back and glue the end of the sheet-like member around the opening hole, so in this respect, when comparing the sheet with a fan attachment part of the second embodiment with the sheet with a fan attachment part of the first embodiment, it can be said that the latter can be produced more easily.

[0049] In the second embodiment, a transparent reinforcing member is used, but frankly speaking, it is more preferable to use an opaque reinforcing member, because if the reinforcing member is transparent, when the fan attachment part is viewed from the back of the air-conditioned suit, the folded-back state of the cutout part is visible, which does not look good.

[0050] [Third embodiment] Next, a seat with a fan attachment part according to a third embodiment of the present invention will be described. Fig. 9(a) is a schematic rear view of the seat with a fan attachment part according to the third embodiment of the present invention, and Fig. 9(b) is a diagram for explaining the state when the seat with a fan attachment part is attached to a specific fabric part of the air-conditioned suit. Here, Fig. 9(b) shows the state when viewed from the rear side of the air-conditioned suit. In the third embodiment, parts having the same functions as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0051] As shown in FIG. 9(a), the sheet with a fan attachment part 1b of the third embodiment includes a sheet-like member 10b, an opening hole 20, and a non-stretchable flat annular reinforcing member (reinforcing means) 30. The sheet with a fan attachment part 1b of the third embodiment differs from the sheet with a fan attachment part 1 of the first embodiment in that the sheet with a fan attachment part 1b is used when manufacturing air-conditioned clothing or the like by a method using a multi-sheet method. Specifically, in the first embodiment, the sheet-like member 10 is considerably larger than the size of the fan attachment part because, for example, a fabric part used for the air-conditioned clothing itself is used as the sheet-like member 10, whereas in the third embodiment, a sheet-like member 10b formed in a square shape slightly larger than the size of the fan attachment part is used as the sheet-like member 10b as shown in FIG. 9(a). The other configurations are the same as those of the first embodiment.

[0052] In this way, in the third embodiment, because the sheet with fan attachment parts 1b is used in the manufacture of air-conditioned clothing, etc., by the other sheet method, the sheet with fan attachment parts 1b can be mass-produced at a location separate from the sewing site. Therefore, by using such mass-produced sheet with fan attachment parts 1b, even general sewing companies that do not have the equipment or skills required for processing the fan attachment parts can manufacture air-conditioned clothing, etc.

[0053] Specifically, when manufacturing an air-conditioned suit using the sheet 1b with a fan attachment part of the third embodiment, first, a rectangular hole, slightly smaller than the size of the sheet-like member 10b, is opened in a predetermined location of the fabric part of the air-conditioned suit corresponding to the location where the fan is to be attached. Then, as shown in FIG. 9(b), the end of the sheet-like member 10b is sewn to the portion of the fabric part 200 around the hole, thereby attaching the sheet 1b with a fan attachment part to the fabric part 200. Here, in FIG. 9(b), the rectangular seam 42 formed by this sewing operation is shown by a dashed line. Note that the fabric part 200 to which the sheet 1b with a fan attachment part of the third embodiment is attached may be regarded as a sheet with a fan attachment part, and this may be used to manufacture air-conditioned suits, etc., by a method using the self-sheet method.

[0054] The seat with a fan attachment part of the third embodiment provides substantially the same functions and effects as the seat with a fan attachment part of the first embodiment.

[0055] In general, in air-conditioned clothing, the fabric parts 200 are sewn together at a position directly to the side, as in the general work clothing shown in FIG. 12, and it is difficult to create a fan attachment part at a position directly to the side of the air-conditioned clothing using the self-sheet method. In contrast, in the multi-sheet method, the sheet 1b with a fan attachment part can be easily attached across adjacent fabric parts 200. Therefore, when the sheet with a fan attachment part of the third embodiment is used, it is possible to provide the fan at a position directly to the side of the air-conditioned clothing. This makes it possible to avoid the fan getting in the way when, for example, getting into a car, etc.

[0056] In the third embodiment, the sheet-like member is formed in a quadrangular shape. However, the shape of the sheet-like member is not limited to a quadrangular shape, and may be a triangular shape, a circular shape, or the like.

[0057] (Modification of the third embodiment) Next, a modified example of the third embodiment will be described. Figure 10(a) is a schematic rear view of a seat with a fan attachment part that is a modified example of the third embodiment, and Figure 10(b) is a schematic partial cross-sectional view of the seat with a fan attachment part as viewed in the direction of the arrow DD.

[0058] As shown in FIG. 10, the sheet 1c with fan attachment part, which is a modification of the third embodiment, includes a sheet-like member 10c, an opening hole 20, and a non-stretchable flat annular reinforcing member (reinforcing means) 30c. In this modification, the material of the sheet-like member 10c and the material of the reinforcing member 30c are the same, and the sheet-like member 10c and the reinforcing member 30c are integrally molded. In this sheet 1c with fan attachment part, it can be considered that the surface of the reinforcing member 30c is fixed to the end of the sheet-like member 10c around the opening hole 20. Specifically, plastic can be used as the material of the sheet-like member 10c and the reinforcing member 30c. In this case, an integrally molded product of the sheet-like member 10c and the reinforcing member 30c can be easily produced by a method such as injection molding.

[0059] Furthermore, if it is confirmed that the above plastic has a thickness that can achieve both the strength required for the reinforcing member 30c and the stitching properties, etc., required for the sheet-like member 10c, it is possible to produce an integrated molded product of the sheet-like member 10c and the reinforcing member 30c by simply punching a plastic sheet of the above thickness, without using injection molding, etc.

[0060] Other configurations of this modified example are similar to those of the third embodiment, and the seat with a fan attachment part of this modified example achieves substantially the same functions and effects as the seat with a fan attachment part of the third embodiment.

[0061] [Other embodiments] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the present invention.

[0062] For example, in each of the above embodiments, the outer shape of the cross section of the cylindrical portion of the fan cut along a plane perpendicular to its central axis is circular, but the outer shape of the cross section of the cylindrical portion cut along a plane perpendicular to its central axis may be, for example, rectangular. In this case, the shape of the opening in the fan attachment portion can be changed from circular to a shape that corresponds to the outer shape of the cylindrical portion, and the reinforcing member and sewing jig can have shapes that correspond to the outer shape of the cylindrical portion.

[0063] In addition, in the above embodiments, a fan having a flange portion is attached to the sheet with a fan attachment portion of the present invention, but in general, any fan can be attached to the sheet with a fan attachment portion of the present invention as long as it includes a fan body having a cylindrical portion and a protruding portion provided on the cylindrical portion so as to protrude in a direction approximately perpendicular to the side surface of the cylindrical portion, and a locking member that is inserted into the outside of the cylindrical portion and attached to the fan body in a state facing the protruding portion. For example, the fan may be configured so that the back surface of the reinforcing member and the protruding portion are in direct contact with each other when the fan is attached.

[0064] In addition, in the above first and second embodiments, a case has been described in which a sheet with a fan mounting portion is used when manufacturing air-conditioned clothing, etc., using a method that employs a self-sheet method, but such a sheet with a fan mounting portion may also be used when manufacturing air-conditioned clothing, etc., using a method that employs a other-sheet method.

[0065] Furthermore, in each of the above embodiments, the reinforcing member and the sheet-like member are sewn together in a circular shape approximately near the center of the reinforcing member, but for example, the reinforcing member and the sheet-like member may be sewn together doubly in a region close to the inner edge and a region close to the outer edge of the reinforcing member, or may be sewn together in a zigzag pattern.

[0066] In each of the above embodiments, it is desirable to use a flexible sheet-like member from the standpoint of comfort, etc. However, in the modified example of the third embodiment, when a small-sized fan is used, it is not always necessary to use a flexible sheet-like member.

[0067] In the above first and second embodiments, a typical woven fabric is used as the material for the sheet-like member. Due to the nature of air-conditioned clothing, it is not necessarily required that the sheet-like member be moisture permeable. For this reason, depending on the purpose of the air-conditioned clothing, an inexpensive material, for example a plastic sheet such as a vinyl sheet, can be used as the material for the sheet-like member.

[0068] Furthermore, in each of the above embodiments, a case has been described in which the reinforcing member is fixed to the sheet-like member by sewing the reinforcing member and the end of the sheet-like member around the opening hole, but if the reinforcing member and the sheet-like member are made of a material that can be welded, the reinforcing member may also be fixed to the sheet-like member by welding the reinforcing member and the end of the sheet-like member around the opening hole.

[0069] Above, a specific embodiment of the sheet with a fan attachment part of the present invention has been described. Finally, to summarize, Fig. 11 shows a representative configuration of a sheet with a fan attachment part of the present invention. Here, Figs. 11(a) to (d) show examples of the configuration of a sheet with a fan attachment part used when manufacturing air-conditioned clothing, etc., by the self-sheet method, and Figs. 11(e) to (g) show examples of the configuration of a sheet with a fan attachment part used when manufacturing air-conditioned clothing, etc., by the other-sheet method. Figs. 11(e) to (g) also show the state in which the sheet with a fan attachment part is attached to a fabric part of the air-conditioned clothing, etc.

[0070] A common feature of these examples is that the surfaces of the reinforcing member other than the surface fixed to the end of the sheet-like member are exposed and not covered by the sheet-like member. However, in order to improve the appearance of the air-conditioned suit, the exposed surfaces of the front and back surfaces of the reinforcing member may be covered in some way. Even in this case, the inner surface of the reinforcing member is exposed, and when the fan is attached, the inner surface of the reinforcing member and the outer surface of the cylindrical part of the fan are in direct contact with each other. In the normal case where only one of the front and back surfaces of the reinforcing member is fixed to the end of the sheet-like member, when the fan is attached to the fan attachment part, the reinforcing member and the locking member are in direct contact with each other, and the inner surface of the reinforcing member is in direct contact with the outer surface of the cylindrical part.

[0071] 11(a) is a sheet with a fan attachment part according to the first embodiment. The entire surface of the reinforcing member 30 is covered with the sheet-like member 10, and the reinforcing member 30 cannot be seen from the front side of the sheet-like member 10. In addition, the reinforcing member 30 and the sheet-like member 10 are sewn together with thread 40.

[0072] 11(b), the reinforcing member 30 and the sheet-like member 10 are made of materials that can be welded together. The reinforcing member 30 and the sheet-like member 10 are then welded together to fix the reinforcing member 30 to the sheet-like member 10.

[0073] In the sheet with fan attachment parts shown in Fig. 11(c), the reinforcing member 30 is fixed to the front surface of the sheet-like member 10, at the end of the sheet-like member 10 around the opening hole. In other words, the back surface of the reinforcing member 30 is fixed to the end of the sheet-like member 10 around the opening hole. This makes the reinforcing member 30 stand out and can be used as part of the design.

[0074] The sheet with fan attachment parts shown in Figure 11(d) is the same as that shown in Figure 6. Only a portion of the surface of the reinforcing member 30 is covered with the sheet-like member 10, and a portion of the reinforcing member 30 can be seen from the front side of the sheet-like member 10.

[0075] 11(e) is a seat with a fan attachment part according to the third embodiment. This seat with a fan attachment part 1b is sewn to a fabric part 200 with thread 40.

[0076] The sheet with a fan attachment part shown in Fig. 11(f) is a modified example of the third embodiment. The material of the sheet-like member 10c and the material of the reinforcing member 30c are the same, and the sheet-like member 10c and the reinforcing member 30c are molded integrally. The sheet with a fan attachment part 1c is sewn to the fabric part 200 with thread 40.

[0077] In the sheet with a fan attachment part shown in Fig. 11(g), the material of the sheet-like member 10c and the material of the reinforcing member 30c are the same, and the sheet-like member 10c and the reinforcing member 30c are molded integrally. However, because the material has a certain degree of strength, the thickness of the integrally molded product is made uniform overall. The sheet with a fan attachment part shown in Fig. 11(g) can be considered to be the sheet with a fan attachment part shown in Fig. 11(f) when the thickness of the reinforcing member is brought close to zero.

[0078] It should be noted that the configuration examples shown in FIG. 11 are representative examples, and the configuration of the seat with a fan mounting portion of the present invention is not limited to these. [Industrial Applicability]

[0079] As described above, in the sheet with a fan attachment part of the present invention, one of the front and back surfaces of the reinforcing means is fixed to the end of the sheet-like member around the opening hole. Therefore, when preparing a fan attachment part for attaching a fan to a sheet-like member, it is not necessary to perform the conventional work of folding the sheet-like member, inserting the reinforcing means into the folded part of the sheet-like member, and applying a lining to the sheet-like member at that part, so that the fan attachment part can be easily prepared on the sheet-like member. In addition, since the end of the sheet-like member around the opening hole can be reinforced by the non-stretchable reinforcing means so that the end does not expand and contract, even if a strong force is applied between the fan and the reinforcing means or between the fan and the sheet-like member, the fan will not easily come off the fan attachment part. Therefore, the present invention is suitable for use in air-flow mats, air-conditioned clothing, and the like. [Explanation of symbols]

[0080] 1,1a,1b,1c Sheet with fan mounting part 10, 10a, 10b, 10c Sheet-like member 13 Cutting 14 Cutting section 15 Adhesive sheet 20 opening hole 30, 30a, 30c Reinforcing member (reinforcing means) 31 Inner surface 40 Thread 41,42 Stitches 60 Reinforcement treatment sheet 70 Horn for ultrasonic welding machine 81 Sewing Jig 82 Sewing Machine Table 83 Sewing machine presser foot column 100 Fans 110 Fan body 111 Cylindrical part 112 Flange portion (protruding portion) 113 Locking claw 120 Locking member 200 Cloth Parts 210 Stitches

Claims

1. A sheet with a fan attachment portion for attaching a fan, the sheet comprising: a fan main body having a cylindrical portion and a protrusion provided on the cylindrical portion so as to protrude in a direction approximately perpendicular to a side surface of the cylindrical portion; and a locking member that is inserted into the outside of the cylindrical portion and is attached to the fan main body in a state facing the protrusion, a sheet-like member having an opening for passing the cylindrical portion of the fan; a non-elastic, flat, annular reinforcing means having an opening having a shape substantially the same as the shape of an outer edge of the cylindrical portion of the fan, one of a front surface and a back surface being fixed to an end of the sheet-like member around the opening hole, and an inner surface being exposed; Equipped with A sheet with a fan mounting portion, characterized in that the fan is mounted by inserting the cylindrical portion into the opening of the reinforcing means and attaching the locking member to the fan body, and sandwiching at least the end of the reinforcing means, among the end of the sheet-like member around the opening hole and the end of the reinforcing means, between the protrusion and the locking member.

2. 2. The seat with a fan mounting portion according to claim 1, wherein when the fan is mounted, the rear surface of the reinforcing means comes into direct contact with the locking member or the protrusion.

3. 3. A seat with a fan mounting portion as described in claim 1 or 2, characterized in that the reinforcing means is washable and made of any one of the following materials: plastic, resin-impregnated cloth, artificial leather, or non-elastic rubber.

4. A sheet with a fan mounting portion as described in claim 1, 2 or 3, characterized in that the reinforcing means is made of a material that can be sewn, and the reinforcing means is fixed to the sheet-like member by sewing the reinforcing means to the end of the sheet-like member around the opening hole.

5. A sheet with a fan mounting portion as described in claim 1 or 2, characterized in that the reinforcing means and the sheet-like member are made of a weldable material, and the reinforcing means is fixed to the sheet-like member by welding the reinforcing means to the end of the sheet-like member around the opening hole.

6. 4. A seat with a fan attachment portion according to claim 1, 2 or 3, wherein the material of said sheet-like member and the material of said reinforcing means are the same.

7. 7. The seat with a fan attachment portion according to claim 6, wherein the reinforcing means and the sheet-like member are integrally molded.

8. A sheet with a fan mounting portion as described in claim 1 or 2, characterized in that the sheet-like member is made of woven fabric, the end of the sheet-like member around the opening hole is fray-proofed, and the reinforcing means is fixed to the sheet-like member by sewing together the reinforcing means and the end of the sheet portion around the opening hole.

9. A sheet with a fan mounting portion as described in any one of claims 1 to 8, characterized in that the size of the opening hole is approximately the same as the size of the opening of the reinforcing means, and the entire surface of the reinforcing means is in contact with the end of the sheet-like member around the opening hole.

10. 8. A seat with a fan attachment portion according to claim 1, 2, 3, 5, 6 or 7, wherein the sheet-like member is made of a material that can be sewn.

11. 11. A seat with a fan mounting portion according to claim 1, wherein the reinforcing means is opaque.

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