Fan and fan set

Abstract

To provide a technology capable of enhancing reliability of a fan.SOLUTION: A fan includes: a fan body for taking in air and exhausting it; and a mounting member for mounting the fan body on a mounting object member. The fan body includes: an intake part for taking in the air; a first flange part around the intake part; and an annular gap having an annular opening between the intake part and the first flange part. The mounting member includes: an annular fitting part inserted in the annular gap from the annular opening, and fitted in the annular gap; and a second flange part for, in the case where the annular fitting part is fitted in the annular gap, sandwiching the mounting object member between itself and the first flange part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a fan.

Background Art

[0002] Patent Document 1 discloses a technology related to a fan.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] There is room for improvement in the fan.

Means for Solving the Problems

[0005] A fan and a fan set are disclosed. In one embodiment, the fan includes a fan body that takes in and discharges air, and a mounting member for mounting the fan body to a mounting target member. The fan body has an intake portion that takes in air, a first flange portion around the intake portion, and an annular gap having an annular opening between the intake portion and the first flange portion. The mounting member has an annular fitting portion that is inserted into the annular gap from the annular opening and fits into the annular gap, and a second flange portion that sandwiches the mounting target member between the first flange portion when the annular fitting portion fits into the annular gap.

[0006] Also, in one embodiment, the fan set includes the above-described fan and a mounting target member to which the fan body included in the fan is mounted by a mounting member.

Effects of the Invention

[0007] The reliability of the fan can be improved.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

BEST MODE FOR CARRYING OUT THE INVENTION

[0009] Figures 1 to 5 are schematic diagrams showing an example of the fan 1. The fan 1 can take in air and discharge the taken-in air. Figure 1 shows an example of how the fan 1 is seen obliquely from the side that takes in air, that is, the intake side. Figure 2 shows an example of how the fan 1 is seen obliquely from the side that discharges air, that is, the exhaust side. Figure 3 shows an example of how the fan 1 is seen in plan view from the exhaust side. Figure 4 shows an example of the cross-sectional structure at the arrow A-A shown in Figure 3. Figure 5 shows an enlarged view of part B of Figure 4.

[0010] The fan 1 is used, for example, in a state of being attached to a member. Hereinafter, the member to which the fan 1 is attached may be referred to as the attachment target member 900. Figure 6 is a schematic diagram showing an example of how the fan 1 is attached to the attachment target member 900. Figure 7 is a schematic diagram showing an example of the attachment target member 900 from which the fan 1 has been removed.

[0011] For example, the fan 1 is detachable from the member 900 to be attached. In the examples of FIGS. 6 and 7, the member 900 to be attached is clothing. Specifically, the member 900 to be attached is an upper garment. In the examples of FIGS. 6 and 7, two fans 1 are attached to the lower part of the back of the upper garment.

[0012] As shown in FIG. 7, the member 900 to be attached has attachment holes 910 for attaching the fan 1 to the member 900 to be attached. The fan 1 is attached to the attachment holes 910. As will be described later, the fan 1 is attached to the member 900 to be attached so as to sandwich the peripheral portion 920 located around the attachment holes 910 in the member 900 to be attached. The fan 1 and the member 900 to which the fan 1 is attached can also be collectively referred to as a fan set 990. An example of the fan set 990 is shown in FIG. 6. Hereinafter, the member 900 to be attached, which is clothing, may be referred to as clothing 900. Further, the clothing 900 to which the fan 1 is attached may be referred to as fan-equipped clothing 950.

[0013] The fan 1 takes in air from one side and discharges the taken-in air from the other side. The fan 1 is attached to the clothing 900 such that the side for taking in air (i.e., the intake side) faces the outside of the clothing 900, and the side for discharging air (i.e., the exhaust side) is located inside the clothing 900. In FIGS. 4 and 5, not only the fan 1 but also the clothing 900 to which the fan 1 is attached is shown. In FIGS. 4 and 5, the cross-section of the fabric of the clothing 900 is simply shown as a straight line. In FIGS. 4 and 5, the lower side of the clothing 900 indicates the outside of the clothing 900 (i.e., the intake side of the fan 1), and the upper side of the clothing 900 indicates the inside of the clothing 900 (i.e., the exhaust side of the fan 1).

[0014] In the fan-equipped clothing 950, during its rotation, the fan 1 takes in air from the outside to the inside of the clothing 900 through the mounting holes 910. The air taken into the inside of the clothing 900 circulates inside the clothing 900 due to the rotation of the fan 1 and is discharged from the clothing 900 through the collar area of the clothing 900 and the like. As a result, the body of the wearer of the fan-equipped clothing 950, that is, the body of the user, is cooled. The mounting holes 910 of the clothing 900 serve as the intake ports for the cooling air, and the collar area of the clothing 900 and the like serve as the exhaust ports for the cooling air.

[0015] Note that the position where the fan 1 is mounted on the clothing 900 is not limited to the example in FIG. 6. Also, the number of fans 1 mounted on the mounting target member 900 may be one, or may be three or more. Further, the fan 1 may not be detachable from the mounting target member 900, and may be non-detachably mounted on the mounting target member 900.

[0016] <Example of fan configuration> The fan 1 includes a fan body 2 that takes in and discharges air, and a mounting member 500 for mounting the fan body 2 on the mounting target member 900. The mounting member 500 is, for example, detachable from the fan body 2. FIG. 8 is a schematic view showing an example of a state where the mounting member 500 is removed from the fan body 2. FIG. 9 is a schematic view showing an example of a state where the mounting member 500 is viewed from the side opposite to FIG. 8.

[0017] The fan 1 operates based on the power (in other words, the power source) supplied from the battery. The fan 1 is electrically connected to the battery by, for example, a cable 800. The power output from the battery is supplied to the fan 1 through the cable 800. The fan 1 rotates based on the power from the battery. The battery is housed in, for example, the pocket of the clothing 900. The cable 800 can also be called a power cable. FIG. 10 is a schematic view showing an example of a state where the cable 800 is connected to the fan 1.

[0018] The fan main body 2 includes, for example, a case 3, an impeller 4, a motor 5 (see FIG. 4) for rotating the impeller 4, a connector 6 (see FIGS. 2 to 4) to which a cable 800 is connected, and a waterproof member 7 for waterproofing the connector 6. The impeller 4, the motor 5, and the connector 6 are housed in the case 3. The waterproof member 7 is attached to, for example, the outer surface of the case 3.

[0019] The impeller 4 is, for example, an axial-flow impeller. The impeller 4 takes in air along the rotational axis direction and discharges the taken-in air along the rotational axis direction. The impeller 4 has a boss at the central part and a plurality of blades connected to the boss. The rotational axis of the motor 5 is fixed to the boss of the impeller 4. The rotational axis direction of the impeller 4 coincides with the rotational axis direction of the motor 5. In FIG. 3, the rotational axis direction of the impeller 4 and the motor 5 is along the depth direction of the paper surface. FIG. 3 shows an example of a plan view of the fan 1 from the exhaust side along the rotational axis direction of the impeller 4 and the motor 5. Also, in FIG. 4, the rotational axis direction of the impeller 4 and the motor 5 is along the vertical direction of the paper surface.

[0020] The electric power output by the battery is supplied to the motor 5 through the cable 800 and the connector 6. The motor 5 rotates based on the electric power from the battery. When the motor 5 rotates, the impeller 4 rotates, and thereby the fan 1 rotates. When the impeller 4 rotates, the fan 1 takes in air from one side and discharges it to the other side.

[0021] <Configuration example of the case of the fan main body> The outer shape of the case 3 generally forms a substantially circular shape when viewed from the intake side or the exhaust side, for example. The case 3 includes, for example, an intake portion 30 for taking in air into the case 3 and an exhaust portion 40 for discharging the air taken into the case 3 to the outside of the case 3. The outer shape of the intake portion 30 forms a substantially circular shape when viewed from the intake side. The outer shape of the exhaust portion 40 forms a substantially circular shape when viewed from the exhaust side. The intake portion 30 and the exhaust portion 40 face each other in the rotational axis direction of the impeller 4 and the motor 5.

[0022] Case 3 includes a peripheral wall portion (also referred to as a side wall portion) 50 that connects the intake portion 30 and the exhaust portion 40 to each other. The peripheral wall portion 50 forms, for example, a cylindrical shape and connects the outer peripheral edge of the intake portion 30 and the outer peripheral edge of the exhaust portion 40.

[0023] Case 3 includes a connector housing portion 60 that houses a connector 6. The connector housing portion 60 is provided on the outer peripheral surface of the peripheral wall portion 50. The connector 6 is located outside the peripheral wall portion 50 in the radial direction of the peripheral wall portion 50. Further, as shown in FIGS. 2 to 4 and the like, case 3 includes a motor housing portion 80 that houses a motor 5 and a wiring housing portion 70 that houses a wiring 75 (see FIG. 4) that electrically connects the connector 6 and the motor 5. The space in the connector housing portion 60, the space in the wiring housing portion 70, and the space in the motor housing portion 80 are connected. The connector housing portion 60, the wiring housing portion 70, and the motor housing portion 80 open toward the exhaust side. Case 3 includes a cover portion 100 that covers the openings of the connector housing portion 60, the wiring housing portion 70, and the motor housing portion 80. The cover portion 100 is, for example, detachable. The cover portion 100 is, for example, screwed.

[0024] As shown in FIG. 10, the cable 800 has, at one end, a connector 810 that is connected to the connector 6. The connector 6 is, for example, a jack connector, and the connector 810 is, for example, a plug connector. The connector 6 has an insertion port 6a (see FIGS. 2 to 4) into which the connector 810 is inserted.

[0025] An insertion port 61 into which the connector 810 is inserted is provided in a portion of the cover portion 100 that covers the opening of the connector housing portion 60. After the connector 810 is inserted into the connector housing portion 60 from the insertion port 61, the connector 810 is inserted into the insertion port 6a of the connector 6 in the connector housing portion 60.

[0026] The waterproof member 7 is a member for making it difficult for water to enter the connector housing portion 60 from the insertion port 61 of the cover portion 100 when the connector 810 is not connected to the connector 6. The waterproof member 7 is connected to, for example, the connector housing portion 60. The waterproof member 7 can block the insertion port 61. Further, the waterproof member 7 can block the insertion port 6a of the connector 6. The waterproof member 7 is made of an elastic material such as rubber, for example. By the waterproof member 7 blocking the insertion port 61 of the cover portion 100 and the insertion port 6a of the connector 6, it becomes difficult for water to enter the connector 6.

[0027] The waterproof member 7 is rotatable relative to the connector housing portion 60, for example. By rotating the waterproof member 7, the user can put the waterproof member 7 in a state of blocking the insertion port 61 and the insertion port 6a, or in a state of not blocking the insertion port 61 and the insertion port 6a. When the waterproof member 7 is fitted and locked to the insertion port 61 and the insertion port 6a, the insertion port 61 and the insertion port 6a are blocked by the waterproof member 7. In FIGS. 1 to 4 etc., the waterproof member 7 in a state of not blocking the insertion port 61 is shown.

[0028] The case 3 includes, on the intake side, a cover portion 110 that covers the boss at the center of the impeller 4. When the case 3 is viewed in plan from the intake side, the cover portion 110 is located at the center of the space surrounded by the cylindrical peripheral wall portion 50. When the case 3 is viewed in plan from the intake side, the intake portion 30 is located around the cover portion 110.

[0029] The intake section 30 includes a plurality of intake ports 31 and a plurality of ribs 33 that define the plurality of intake ports 31. Air is taken into the case 3 from the plurality of intake ports 31. The plurality of ribs 33 includes a plurality of circular circumferential ribs 34 that extend along the circumferential direction of the intake section 30 and a plurality of radial ribs 35 that extend radially from the cover section 110 along the radial direction of the intake section 30. The plurality of radial ribs 35 extend linearly, for example, from the cover section 110 to the outer peripheral edge of the intake section 30 and are connected to the intake-side end of the peripheral wall section 50. The plurality of circumferential ribs 34 are arranged concentrically so as to surround the cover section 110. Each circumferential rib 34 is arranged so as to connect the plurality of radial ribs 35. Note that the shape of the rib 33 provided in the intake section 30 is not limited to this.

[0030] As shown in FIG. 3, when the case 3 is viewed in plan from the exhaust side, the motor housing section 80 is located at the center of the space surrounded by the cylindrical peripheral wall section 50. The wiring housing section 70 extends from the motor housing section 80 along the radial direction of the cylindrical peripheral wall section 50 to the connector housing section 60 provided on the outer surface of the peripheral wall section 50. When the case 3 is viewed in plan from the exhaust side, the exhaust section 40 is located around the motor housing section 80 and the wiring housing section 70.

[0031] The exhaust section 40 includes a plurality of exhaust ports 41 and a plurality of ribs 43 that define the plurality of exhaust ports 41. The air taken into the case 3 is discharged to the outside of the case 3 from the plurality of exhaust ports 41. The plurality of ribs 43 includes a circular circumferential rib 44 that extends along the circumferential direction of the exhaust section 40 and a plurality of radial ribs 45 that extend radially substantially along the radial direction of the exhaust section 40.

[0032] The plurality of radial ribs 45 extend to the outer peripheral edge of the exhaust section 40 and are connected to the exhaust-side end of the peripheral wall section 50. The circumferential rib 44 is arranged in a substantially circular shape so as to substantially surround the motor housing section 80 when the case 3 is viewed in plan from the exhaust side. The circumferential rib 44 is arranged so as to connect the plurality of radial ribs 45. Note that the shape of the rib 43 provided in the exhaust section 40 is not limited to this.

[0033] In the fan 1, when the impeller 4 is rotating, air is taken into the case 3 from each air inlet 31 of the intake portion 30. And when the impeller 4 is rotating, the air taken into the case 3 is discharged to the outside of the case 3 from each exhaust port 41 of the exhaust portion 40.

[0034] In this example, approximately three - quarters of the intake - side portion (also referred to as the intake - side part) of the peripheral wall portion 50 has a double - structure. As shown in FIGS. 4 and 5 etc., the intake - side part of the peripheral wall portion 50 includes, for example, a cylindrical inner peripheral wall portion 55 and a cylindrical outer peripheral wall portion 51. The outer peripheral wall portion 51 takes in the inner peripheral wall portion 55 with a gap therebetween. The plurality of radial ribs 35 of the intake portion 30 are connected to the intake - side end of the inner peripheral surface of the inner peripheral wall portion 55. The plurality of radial ribs 45 of the exhaust portion 40 are connected to approximately one - quarter of the exhaust - side portion (also referred to as the exhaust - side part) of the peripheral wall portion 50 that does not have a double - structure.

[0035] As shown in FIGS. 4, 5, 8 etc., the case 3 includes a flange portion 150 provided at the intake - side end of the outer peripheral wall portion 51. The flange portion 150 is, for example, annular and plate - shaped. When viewing the case 3 from the intake side, the flange portion 150 is located around the intake portion 30 and surrounds the intake portion 30. The flange portion 150 protrudes along the radial direction of the outer peripheral wall portion 51 more than the outer peripheral wall portion 51.

[0036] In this example, as shown in FIGS. 4 and 5 etc., the outer surface 30a of the intake portion 30 protrudes outside more than the intake - side surface 151 of the flange portion 150. The outer surface 30a of the intake portion 30 includes the outer end surfaces of each rib 33.

[0037] The case 3 has a holding portion 90 provided on the outer peripheral surface of the peripheral wall portion 50 and capable of holding the cable 800. The case 3 has, for example, two holding portions 90. The holding portion 90 is composed of, for example, a plate - like portion bent approximately in an L - shape. As shown in FIG. 10, the holding portion 90 can hold, for example, the wire portion 820 of the cable 800.

[0038] The holding portion 90 has a plate-shaped first portion 91 that protrudes outward along the radial direction of the peripheral wall portion 50 from the outer peripheral surface of the peripheral wall portion 50, and a plate-shaped second portion 92 that stands upright at the radially outer end of the peripheral wall portion 50 in the first portion 91. The wire portion 820 of the cable 800 is disposed in the space surrounded by the first portion 91 of the holding portion 90, the second portion 92 of the holding portion 90, and the peripheral wall portion 50, and is pinched by the second portion 92 and the peripheral wall portion 50. In this way, since the fan body 2 has the holding portion 90 capable of holding the cable 800, the handling of the cable 800 becomes easy.

[0039] As shown in FIG. 3, when the case 3 is viewed in plan from the exhaust side, when the connector housing portion 60 is located at the 9 o'clock direction, the two holding portions 90 are located, for example, at the 11 o'clock direction and the 7 o'clock direction. In FIG. 3, when the cable 800 is pulled out clockwise from the connector housing portion 60, for example, the wire portion 820 of the cable 800 is held by the holding portion 90 at the 11 o'clock direction. On the other hand, in FIG. 3, when the cable 800 is pulled out counterclockwise from the connector housing portion 60, for example, as shown in FIG. 10, the wire portion 820 is held by the holding portion 90 at the 7 o'clock direction.

[0040] Note that, for example, when the wire portion 820 is disposed so as to surround the peripheral wall portion 50, the wire portion 820 may be held by the two holding portions 90. Further, the user does not have to hold the wire portion 820 by each holding portion 90. Further, the number of the holding portions 90 provided in the case 3 may be one, or may be three or more.

[0041] In this example, in Case 3, the parts other than the cover part 100 are configured by combining, for example, two members (for example, two molded products). One of the two members (also referred to as the first case member) includes, for example, the intake part 30, the cover part 110, and the inner peripheral wall part 55. The other of the two members (also referred to as the second case member) includes the exhaust part 40, the outer peripheral wall part 51, the exhaust side part of the peripheral wall part 50 that is not a double structure, the flange part 150, the two holding parts 90, the connector housing part 60, the wiring housing part 70, and the motor housing part 80. The first case member is disposed inside the outer peripheral wall part 51 so that the inner peripheral wall part 55 faces the outer peripheral wall part 51, and fits with the second case member. For example, the first case member has a plurality of fitting claws that project from the exhaust side end of the inner peripheral wall part 55 toward the exhaust side, and the second case member has a plurality of fitting holes that respectively fit with the plurality of fitting claws at the exhaust side part of the peripheral wall part 50.

[0042] Note that the configuration examples of the first case member and the second case member are not limited to the above examples. Also, the connection method between the first case member and the second case member is not limited to the above example. Further, Case 3 may be configured by one member or may be configured by three or more members.

[0043] As shown in FIGS. 4, 5, 8, etc., Case 3 has an annular gap 200 having an annular opening 201 between the intake part 30 and the flange part 150. In this example, the space between the inner peripheral wall part 55 and the member including the outer peripheral wall part 51 and the flange part 150 connected thereto constitutes the annular gap 200. When Case 3 is viewed from the intake side, the annular opening 201 surrounds the intake part 30, and the flange part 150 surrounds the annular opening 201. The intake side opening of the annular gap 200 constitutes the annular opening 201. The annular gap 200 extends from the intake side to the exhaust side, and the depth direction of the annular gap 200 is along the rotation axis direction of the impeller 4 and the motor 5.

[0044] As shown in FIGS. 8 and 9 and the like, the mounting member 500 for mounting the fan body 2 to the member 900 to be mounted has an annular fitting portion 510 that is inserted into the annular gap 200 from the annular opening 201 and fits into the annular gap 200. The annular fitting portion 510 can also be said to be a ring portion. Further, when the annular fitting portion 510 fits into the annular gap 200, the mounting member 500 has a flange portion 550 that sandwiches the member 900 to be mounted between the flange portion 150 of the fan body 2. The flange portion 550 protrudes in the radial direction of the annular fitting portion 510 from the outer peripheral surface so as to surround the outer peripheral surface of the annular fitting portion 510. The flange portion 550 is annular and plate-like, and is provided at the peripheral end portion on the intake side of the outer peripheral surface of the annular fitting portion 510. The annular fitting portion 510 has a fitting region 515 with the annular gap 200 on its inner peripheral surface. The annular fitting portion 510 is, for example, screwed to the annular gap 200. The fitting region 515 is constituted by, for example, a female screw portion. The mounting member 500 can also be said to be a mounting ring member.

[0045] As shown in FIGS. 4 and 5, a fitting region 210 with the annular fitting portion 510 is provided on the annular wall surface inside the annular gap 200. The annular wall surface inside the annular gap 200 is constituted by the outer peripheral surface of the inner peripheral wall portion 55. It can be said that the fitting region 210 is provided on the outer peripheral surface of the inner peripheral wall portion 55. The fitting region 210 is constituted by, for example, a male screw portion that screws with the female screw portion constituting the fitting region 515 of the annular fitting portion 510.

[0046] <Example of the method for mounting the fan to the member to be mounted> Next, an example of the method for mounting the fan 1 to the member 900 to be mounted will be described. For example, when the fan 1 is mounted to the mounting hole 910 of the garment 900, first, the annular fitting portion 510 of the mounting member 500 is inserted into the mounting hole 910 from the outside of the garment 900. At this time, the flange portion 550 having a diameter larger than the diameter of the mounting hole 910 is located outside the garment 900.

[0047] Next, with respect to the annular fitting portion 510 protruding inside the garment 900, the fan body 2 is brought closer from the inside of the garment 900, and the annular fitting portion 510 is inserted into the annular gap 200 from the annular opening 201 on the intake side of the case 3. At this time, at least one of the case 3 and the mounting member 500 is rotated, so that the annular fitting portion 510 advances into the annular gap 200, and the annular fitting portion 510 and the annular gap 200 are screwed together. As the annular fitting portion 510 advances into the annular gap 200, the flange portion 550 of the mounting member 500 and the flange portion 150 of the fan body 2 come into contact with the outer surface and the inner surface of the peripheral portion 920 around the mounting hole 910 in the garment 900, respectively, and the sheet-like peripheral portion 920 is clamped between the flange portion 550 and the flange portion 150. Thereby, the fan 1 is fixed to the garment 900. When the impeller 4 of the fan 1 fixed to the garment 900 rotates, the air outside the garment 900 is taken into the inside of the garment 900 through the intake port 31 and the exhaust port 41. The air taken into the inside of the garment 900 circulates inside the garment 900 due to the rotation of the fan 1 (that is, due to the rotation of the impeller 4) and is discharged outside the garment 900 from the collar of the garment 900 or the like.

[0048] On the other hand, when the fan 1 is removed from the garment 900, at least one of the case 3 and the mounting member 500 is rotated in the opposite direction to when the fan 1 is attached to the garment 900, and the annular fitting portion 510 is removed from the annular gap 200. Thereby, the mounting member 500 is removed from the case 3, and the fan 1 is removed from the garment 900.

[0049] Note that the method of attaching the fan 1 to the garment 900 is not limited to the above example. For example, the case 3 may be brought closer to the mounting hole 910 from the inside of the garment 900 to expose the annular opening 201 from the mounting hole 910, and then the annular fitting portion 510 of the mounting member 500 may be inserted into the annular gap 200 from the annular opening 201 and fitted from the outside of the garment 900.

[0050] Here, in this example, as described above, the outer surface 30a of the intake portion 30 protrudes outward beyond the intake-side surface 151 of the flange portion 150. As a result, when the flange portion 150 is applied to the peripheral portion 920 of the garment 900 from the inside of the garment 900 to expose the annular opening 201 from the mounting hole 910, as shown in FIG. 4, a part of the case 3 is located within the mounting hole 910. For this reason, when the flange portion 150 is applied to the peripheral portion 920 of the garment 900 from the inside of the garment 900 to expose the annular opening 201 from the mounting hole 910, the position of the case 3 is likely to be stabilized. Thus, it becomes easier to insert and fit the annular fitting portion 510 of the mounting member 500 into the annular gap 200 of the case 3. That is, it becomes easier to attach the mounting member 500 to the case 3.

[0051] Further, in this example, when the annular fitting portion 510 fits with the annular gap 200 and the flange portion 550 and the flange portion 150 sandwich the attachment target member 900, as shown in FIGS. 4 and 5, the outer surface 30a of the intake portion 30 and the intake-side surface 559 of the flange portion 550 are generally located on the same plane. Thereby, the design property of the intake-side surface of the fan 1 is improved.

[0052] Note that the outer surface 30a of the intake portion 30 does not necessarily have to protrude outward beyond the intake-side surface 559 of the flange portion 150. For example, the outer surface 30a of the intake portion 30 and the intake-side surface 151 of the flange portion 150 may be generally located on the same plane, or the outer surface 30a of the intake portion 30 may be located inside (in other words, on the exhaust side) of the intake-side surface 151 of the flange portion 150. Also, the outer surface 30a of the intake portion 30 may protrude outward beyond the intake-side surface 559 of the flange portion 550, or may be located inside of the intake-side surface 559 of the flange portion 550.

[0053] In the above example, the fan 1 is attached to the upper garment, but the fan 1 may be attached to a garment other than the upper garment. For example, the fan 1 may be attached to the trousers. Also, the fan 1 may be attached to something other than a garment. That is, the attachment target member 900 may be other than a garment. For example, the attachment target member 900 may be a waist pouch having an attachment hole 910, a rucksack having an attachment hole 910, or a cooler bag having an attachment hole 910. Even when the fan 1 is attached to an attachment target member 900 other than a garment, in the same manner as above, the attachment member 500 is attached to the fan body 2 passed through the attachment hole 910, and the flange portion 150 of the fan body 2 and the flange portion 550 of the attachment member 500 sandwich the peripheral portion 920 of the attachment hole 910, whereby the fan 1 is attached to the attachment hole 910.

[0054] Also, the annular fitting portion 510 of the attachment member 500 and the annular gap 200 of the fan body 2 may be fitted by a method other than screw fitting. For example, one of the fitting regions 515 of the annular fitting portion 510 and the fitting region 210 of the annular gap 200 may be constituted by fitting claws, and the other of the fitting regions 515 of the annular fitting portion 510 and the fitting region 210 of the annular gap 200 may be constituted by a fitting hole or a fitting recess that fits with the fitting claws.

[0055] As described above, in this example, the annular fitting portion 510 of the attachment member 500 is inserted from the annular opening 201 of the fan body 2 into the annular gap 200 and fitted into the annular gap 200. Therefore, the fan body 2 has the fitting region 210 with the annular fitting portion 510 inside the annular gap 200. Since the fitting region 210 is less likely to come into contact with members other than the fan 1 due to the fitting region 210 existing inside the annular gap 200, the fitting region 210 is less likely to be damaged when the fan body 2 falls or the like. Thus, it is less likely that the fan 1 becomes difficult to attach to the attachment target member 900 due to the fall of the fan body 2 or the like. As a result, the reliability of the fan 1 can be improved.

[0056] In addition, in this example, a connector housing portion 60 for housing the connector 6 is provided on the outer peripheral surface of the peripheral wall portion 50. As a result, it becomes difficult for the position, shape, etc. of the connector housing portion 60 to affect the design of the rib 43 of the exhaust portion 40. As a result, the exhaust performance of the fan 1 can be improved.

[0057] In addition, in this example, when the annular fitting portion 510 fits into the annular gap 20, as shown in FIGS. 4 and 5, a gap is generated between the annular fitting portion 510 and the fan body 2 within the annular gap 200. For example, a gap is generated between the annular fitting portion 510 and the outer peripheral wall portion 51 of the case 3 within the annular gap 200. As a result, it becomes easier to insert and fit the annular fitting portion 510 into the annular gap 20. Also, within the annular gap 200, it becomes less likely for the annular fitting portion 510 to hit the fan body 2 and less likely to be damaged.

[0058] Note that a gap may be generated between the annular fitting portion 510 and the inner peripheral wall portion 55 of the case 3 within the annular gap 200. In this case, a fitting region 515 may be provided on the outer peripheral surface of the annular fitting portion 510, and a fitting region 210 may be provided on the annular wall surface outside the annular gap 200 (in other words, the inner peripheral surface of the outer peripheral wall portion 51).

[0059] When the annular fitting portion 510 has a fitting region 515 on its outer peripheral surface, for example, when passing the annular fitting portion 510 through the mounting hole 910, the fitting region 515 on the outside of the annular fitting portion 510 may hit or get caught on the edge of the mounting hole 910. Therefore, it may be difficult to pass the annular fitting portion 510 through the mounting hole 910. Also, if the edge of the mounting hole 910 gets caught on the fitting region 515 on the outside of the annular fitting portion 510, in some cases, the peripheral portion 920 of the mounting hole 910 may be pinched between the fitting region 515 and the fitting region 210 within the annular gap 200. As a result, the annular fitting portion 510 may enter obliquely into the annular gap 200, and the attachment member 500 may be attached obliquely to the fan body 2.

[0060] On the other hand, as in the examples of FIGS. 4 and 5, when the annular fitting portion 510 has a fitting region 515 on the inner peripheral surface, when passing the annular fitting portion 510 through the mounting hole 910, the fitting region 515 inside the annular fitting portion 510 is less likely to touch the edge of the mounting hole 910. As a result, it becomes easier to pass the annular fitting portion 510 through the mounting hole 910. Also, the edge of the mounting hole 910 is less likely to get caught on the annular fitting portion 510, and the possibility that the peripheral portion 920 of the mounting hole 910 is sandwiched between the fitting region 515 and the fitting region 210 is reduced. As a result, the possibility that the mounting member 500 is attached obliquely to the fan body 2 is reduced.

[0061] Also, even if the annular fitting portion 510 enters obliquely into the annular gap 200, the positional relationship between the inner peripheral wall portion 55 located on the side of the impeller 4 rather than the annular fitting portion 510 and the impeller 4 is unlikely to change, so the possibility that the case 3 contacts the impeller 4 is reduced.

[0062] As shown in FIGS. 2 and 3 and the like, the flange portion 550 of the mounting member 500 may have a plurality of convex portions 551 arranged in the circumferential direction on the outer peripheral end surface. In this case, even if the user touches the outer peripheral end surface of the flange portion 550 with a finger and holds the flange portion 550 with the finger when attaching the mounting member 500 to the fan body 2, the finger is less likely to slip.

[0063] Also, as shown in FIG. 3 and the like, the convex portion 511 may protrude outside the outer peripheral end surface of the flange portion 150 of the fan body 2 when the annular fitting portion 510 fits into the annular gap 20. In this case, when the user attaches the mounting member 500 to the fan body 2 while touching the convex portion 511 with a finger and holding the flange portion 550 with the finger, it is less likely that the finger hits the flange portion 150 of the fan body 2 through the mounting target member 900. Therefore, for example, when the user rotates the mounting member 500 while holding the flange portion 550 with a finger, it is less likely that the mounting member 500 rotates together with the fan body 2. As a result, it becomes easier to attach the fan 1 to the mounting target member 900.

[0064] In the example of FIG. 3, each of the plurality of convex portions 511 protrudes outside the outer peripheral end surface of the flange portion 150. However, only a part of the plurality of convex portions 511 may protrude outside the outer peripheral end surface of the flange portion 150. That is, the plurality of convex portions 511 may have at least one convex portion 511 that protrudes outside the outer peripheral end surface of the flange portion 150.

[0065] Also, as shown in FIG. 3 and the like, the bottom surface 555a of the recess 555 between the two convex portions 551 may be located outside the outer peripheral end surface of the flange portion 150 of the fan body 2 when the annular fitting portion 510 is fitted into the annular gap 20. In this case, when the user attaches the attachment member 500 to the fan body 2 with a finger in contact with the bottom surface 555a of the recess 555 and holding the flange portion 550 with the finger, it is less likely that the finger hits the flange portion 150 of the fan body 2 through the attachment target member 900. Therefore, for example, when the user rotates the attachment member 500 while holding the flange portion 550 with a finger, it is less likely that the attachment member 500 rotates together with the fan body 2.

[0066] In the example of FIG. 3, the bottom surface 555a of each of the plurality of recesses 555 is located outside the outer peripheral end surface of the flange portion 150. However, the bottom surface 555a of only a part of the plurality of recesses 555 may be located outside the outer peripheral end surface of the flange portion 150.

[0067] Also, as shown in FIGS. 2 and 3 and the like, the peripheral wall portion 50 of the fan body 2 may have a plurality of convex portions 59 arranged in the circumferential direction on the outer peripheral surface. In this case, when the user attaches the attachment member 500 to the fan body 2, even if the user touches the outer peripheral surface of the peripheral wall portion 50 with a finger and holds the fan body 2 with the finger, the finger is less likely to slip.

[0068] As described above, the fan 1 and the fan set 990 have been described in detail. However, the above descriptions are illustrative in all aspects and the disclosure is not limited thereto. Also, the various examples described above are applicable in combination as long as they do not conflict with each other. And it is understood that countless examples not illustrated can be assumed without departing from the scope of this disclosure.

[0069] The present disclosure includes the following content.

[0070] In one embodiment, (1) the fan includes a fan body that takes in and discharges air, and a mounting member for mounting the fan body to a member to be mounted. The fan body has an intake portion for taking in air, a first flange portion around the intake portion, and an annular gap having an annular opening between the intake portion and the first flange portion. The mounting member has an annular fitting portion that is inserted into the annular gap from the annular opening and fits into the annular gap, and a second flange portion that sandwiches the member to be mounted between the first flange portion when the annular fitting portion fits into the annular gap.

[0071] (2) The fan according to (1) above, when the annular fitting portion fits into the annular gap, a gap is generated between the annular fitting portion and the fan body within the annular gap.

[0072] (3) The fan according to (1) or (2) above, the annular fitting portion has a fitting region with the annular gap on its inner peripheral surface.

[0073] (4) The fan according to any one of (1) to (3) above, the outer surface of the intake portion protrudes outward more than the intake-side surface of the first flange portion.

[0074] (5) The fan according to any one of (1) to (4) above, the second flange portion has a plurality of first convex portions arranged in the circumferential direction on its outer peripheral end surface.

[0075] (6) The fan according to (5) above, wherein the plurality of first convex portions include at least one first convex portion that protrudes outside the outer peripheral end surface of the first flange portion when the annular fitting portion is fitted into the annular gap.

[0076] (7) The fan according to (6) above, wherein the bottom surface of the recess between two of the plurality of first convex portions is located outside the outer peripheral end surface of the first flange portion when the annular fitting portion is fitted into the annular gap.

[0077] (8) The fan according to any one of (1) to (7) above, wherein the fan body has a peripheral wall portion connected to the intake portion, and the peripheral wall portion has a plurality of second convex portions arranged in the circumferential direction on the outer peripheral surface.

[0078] (9) The fan according to any one of (1) to (8) above, wherein the fan body includes a peripheral wall portion connected to the intake portion, a connector, and a connector housing portion provided on the outer peripheral surface of the peripheral wall portion for housing the connector.

[0079] (10) The fan according to (9) above, wherein the fan body has a holding portion provided on the outer peripheral surface of the peripheral wall portion and capable of holding a cable connected to the connector.

[0080] Also, in one embodiment, (11) A fan set includes the fan according to any one of (1) to (10) above, and an attachment target member to which the fan body included in the fan is attached by the attachment member.

Explanation of Reference Numerals

[0081] 1 Fan 2 Fan body 7 Connector 30 Intake portion 30a, 151 Surface 50 Peripheral wall portion 59 Convex portion 60 Connector housing portion 90 Holding portion 150 Flange portion 200 annular gap 201 annular opening 500 mounting member 510 annular fitting portion 550 flange portion 551 convex portion 555 concave portion 555a bottom surface 900 member to be mounted

Claims

1. A fan body that takes in and discharges air, and an attachment member for attaching the fan body to a member to be attached. The fan is provided with: The fan body includes: An intake portion that takes in air, A first flange portion around the intake portion, An annular gap having an annular opening between the intake portion and the first flange portion. The fan body has: The attachment member includes: An annular fitting portion that is inserted into the annular gap from the annular opening and fits into the annular gap, A second flange portion that sandwiches the member to be attached between the first flange portion when the annular fitting portion fits into the annular gap. The fan has:

2. The fan according to claim 1, wherein a gap is formed between the annular fitting portion and the fan body within the annular gap when the annular fitting portion fits into the annular gap.

3. The fan according to claim 1 or claim 2, wherein the annular fitting portion has a fitting region with the annular gap on its inner peripheral surface.

4. The fan according to claim 1 or claim 2, wherein the outer surface of the intake portion protrudes outward beyond the intake-side surface of the first flange portion.

5. The fan according to claim 1 or claim 2, wherein the second flange portion has a plurality of first convex portions arranged in the circumferential direction on its outer peripheral end face.

6. The fan according to claim 5, wherein the plurality of first convex portions include at least one first convex portion that protrudes outward beyond the outer peripheral end face of the first flange portion when the annular fitting portion fits into the annular gap.

7. The fan according to claim 6, wherein the bottom surface of the recess between two of the plurality of first convex portions is located outward beyond the outer peripheral end face of the first flange portion when the annular fitting portion fits into the annular gap.

8. The fan according to claim 1 or claim 2, wherein the fan body has a peripheral wall portion connected to the intake portion, and the peripheral wall portion has a plurality of second convex portions arranged in the circumferential direction on its outer peripheral surface.

9. The fan according to claim 1 or claim 2, wherein the fan body includes: A peripheral wall portion connected to the intake portion, A connector, A connector housing portion provided on the outer peripheral surface of the peripheral wall portion for housing the connector. The fan is provided with:

10. The fan according to claim 9, The fan main body has a holding portion provided on the outer peripheral surface of the peripheral wall portion and capable of holding a cable connected to the connector, the fan.

11. The fan according to claim 1 or claim 2, and a mounting target member to which the fan main body included in the fan is mounted by the mounting member comprising a fan set.

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