Fans and fan-equipped clothing

Abstract

To provide a fan which enables a user to clean the inside easily.SOLUTION: A fan 1A includes a case body 2. The case body 2 includes: a front case part 20; and a rear case part 21 which is detachably attached to the front case part 20. The front case part 20 includes an engagement piece part 3 which restricts relative movement (rotation) between the front case part 20 and the rear case part 21 along a circumferential direction. The rear case part 21 includes an engaged part 4 which restricts relative movement (rotation) between the front case part 20 and the rear case part 21 along the circumferential direction. The engagement piece part 3 includes: a tongue piece part extending along the circumferential direction of a flange part 23; and an engagement part formed at an end as seen in an extension direction of the tongue piece part.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a fan and fan - equipped wear.

Background Art

[0002] In recent years, fan - equipped wear for cooling the body has been put into practical use and is rapidly spreading. The fan - equipped wear has a fan for taking in air into the wear body attached to a wear body formed of a material with low air permeability. When the fan is operated, a large amount of air is taken into the wear body from the fan, flows along the surface of the wearer's body or underwear, and then is discharged to the outside from an air discharge part formed at an opening of a collar part or a sleeve part.

[0003] And while the air taken into the wear body by the fan flows along the surface of the wearer's body or underwear, it evaporates the sweat emitted from the body, and the body is cooled by the heat of vaporization during evaporation.

[0004] The fan used in the fan - equipped wear includes, for example, a case body incorporating an impeller rotated by a motor, and a rear guard attached so as to close an opening of the case body. The case body is arranged inside the clothes, and the rear guard is attached so as to be arranged outside the clothes for use.

[0005] As a fan used in such fan - equipped wear, a technique has been proposed that enables internal cleaning of the fan (see, for example, Patent Document 1).

[0006] In Patent Document 1, the rear guard includes an inner cylinder part that is inscribed in a cylindrical part of the case body, and the inner cylinder part is provided with engaging claws for attaching the rear guard to the case body. At the tip of the engaging claw, a hook - shaped engaging part and an inclined part for releasing the engagement of the engaging claw engaged with the case body are formed, and by rotating the rear guard in a predetermined direction, the engagement of the engaging claw is released.

Prior Art Documents

Patent Documents

[0007] [Patent Document 1] Japanese Patent Publication No. 2021-181755 [Overview of the project] [Problems that the invention aims to solve]

[0008] Patent Document 1 describes a fan in which the rear guard can be rotated relative to the case in a predetermined direction to engage and disengage the engagement claws of the case and the notch in the case, allowing the rear guard to be removed from the case and the inside of the fan to be cleaned. The objective is to provide a fan in which the rear guard can be removed from the case even more easily for internal cleaning.

[0009] This invention was made to solve these problems and aims to provide a fan and fan-equipped clothing that can be easily cleaned internally. [Means for solving the problem]

[0010] To solve the above-mentioned problems, the invention described in claim 1 comprises a case body having a motor case to which a motor for rotating an impeller is attached, the case body comprising a first case portion and a second case portion detachably attached to the first case portion, the first case portion comprising a cylindrical portion, a flange portion protruding outward from the outer circumference of the cylindrical portion, and engaging means for restricting the relative movement of the first case portion and the second case portion along the circumferential direction of the flange portion, and the second case portion comprising engaging means for restricting the relative movement of the first case portion and the second case portion along the circumferential direction of the flange portion The engagement means comprises a tongue-shaped piece having flexibility, extending along the circumferential direction of the flange portion, with one end being a fixed end relative to the flange portion and the other end being a free end; and an engagement portion provided on the side of the free end of the tongue-shaped piece, having a convex portion protruding from the surface of the flange portion facing the second case portion and a recess that is concave relative to the convex portion, arranged along the circumferential direction of the flange portion; and the engaged means comprises a recess that is concave relative to the back surface of the second case portion facing the flange portion and a convex portion that is convex relative to the recess, arranged along the circumferential direction of the second case portion, and engaging with the engagement means. The tongue-shaped portion, through relative movement between the first and second case portions along the circumferential direction of the flange portion, has its free end on the downstream side in the direction in which the engaging portion and the engaged portion engage. I'm a fan.

[0011] The invention described in claim 2 is a fan according to claim 1, wherein the first case portion is provided with locking means for restricting the relative movement of the first case portion and the second case portion along the axial direction of the cylindrical portion, and the second case portion is provided with locking means for restricting the relative movement of the first case portion and the second case portion along the axial direction of the cylindrical portion, and when the first case portion and the second case portion move relatively along the circumferential direction of the flange portion to a position where the engaging portion and the engaged portion engage, the locking means and the locking means lock together.

[0013] Claim 3 The invention described herein is characterized in that the engaging portion has a guiding surface that causes the tongue-shaped piece to bend when pressed against the engaged portion, and the engaged portion has a guiding surface that causes the tongue-shaped piece to bend when pressed against the engaging portion. 1 I am a fan of the person mentioned.

[0014] Claim 4The invention described in claim 1 is the fan described in

[0015] Claim 5 The invention described in claim 4 is the fan described in

[0016] Claim 6 The invention described in claim is a fan-equipped wear having the fan described in any one of claims 1 to claim 5 and a wear body covering at least a part of the wearer's body.

Advantages of the Invention

[0017] According to the present invention, due to the relative movement between the first case part and the second case part along the circumferential direction of the flange part, the tongue-like piece part is easily elastically deformed, and the second case part can be removed from the first case part, and internal cleaning can be easily performed.

Brief Description of the Drawings

[0018] [Figure 1] It is a rear view in a state where the opening / closing means of the fan-equipped wear according to the embodiment is closed. [Figure 2] It is a front view in a state where the opening / closing means of the fan-equipped wear according to the embodiment is open. [Figure 3] It is an exploded perspective view showing an example of the fan according to the embodiment. [Figure 4] It is an exploded perspective view showing an example of the fan according to the embodiment. [Figure 5] It is a cross-sectional view of the main part showing a state where the front case part and the rear case part are attached. [Figure 6A] It is a side view of the main part of the front case part showing an example of the engaging piece part and the locking part. [Figure 6B] It is a cross-sectional view of the main part of the rear case part showing an example of the engaged part and the locked part. [Figure 7A]It is a perspective view of the main part of the front case part showing an example of the engaging piece part and the locking part. [Figure 7B] It is a broken perspective view of the main part of the rear case part showing an example of the engaged part and the locked part. [Figure 8] It is a plan view showing an example of the mounting member. [Figure 9A] It is a side sectional view of the main part showing an example of the operation of removing the rear case part from the front case part. [Figure 9B] It is a side sectional view of the main part showing an example of the operation of removing the rear case part from the front case part. [Figure 9C] It is a side sectional view of the main part showing an example of the operation of removing the rear case part from the front case part. [Figure 10A] It is a side sectional view of the main part showing an example of the operation of attaching the rear case part to the front case part. [Figure 10B] It is a side sectional view of the main part showing an example of the operation of attaching the rear case part to the front case part. [Figure 10C] It is a side sectional view of the main part showing an example of the operation of attaching the rear case part to the front case part. [Figure 10D] It is a side sectional view of the main part showing an example of the operation of attaching the rear case part to the front case part. [Figure 10E] It is a side sectional view of the main part showing an example of the operation of attaching the rear case part to the front case part.

Embodiments for Carrying out the Invention

[0019] Hereinafter, embodiments of the fan and the fan - equipped wear of the present invention will be described with reference to the drawings.

[0020] <Configuration Example of Fan - Equipped Wear in the Present Embodiment> FIG. 1 is a rear view of the fan - equipped wear according to the embodiment in a state where the opening - closing means is closed, and FIG. 2 is a front view of the fan - equipped wear according to the embodiment in a state where the opening - closing means is open.

[0021] The fan-equipped garment 10 comprises a garment body 11, a fan 1A for introducing air into the garment body 11, a power supply unit 12 for supplying power to the fan 1A, and a connecting cable 13 for connecting the power supply unit 12 and the fan 1A. The fan-equipped garment 10 circulates the air taken into the garment body 11 by the fan 1A along the surface of the wearer's body or underwear, and then discharges it from air exhaust outlets 14 formed in the collar and sleeves of the garment body 11, thereby evaporating sweat from the body and cooling the body with the heat of vaporization that occurs during evaporation.

[0022] The garment body 11 is formed to cover the wearer's torso and arms using a fabric that is either non-breathable or breathable enough to be inflated by the introduction of air by the fan 1A. In Figures 1 to 3, the garment body 11 is formed in the shape of a blouson-type jacket, but the shape of the garment body 11 is not limited to covering at least a part of the wearer's body. For example, it may be formed in the shape of a vest that covers only the wearer's torso.

[0023] Furthermore, based on the state in which the wearer is wearing the fan-equipped garment 10, the direction in front of the wearer is defined as the front, and the direction in rear of the wearer is defined as the rear. In addition, when wearing the fan-equipped garment 10, the side facing the wearer is defined as the inner side, and the opposite side facing the external space is defined as the outer side.

[0024] The garment body 11 is equipped with an opening / closing mechanism 15 on the front, which is a detachable dividing section formed by a zipper or the like. The garment body 11 is also equipped with an air leak prevention mechanism 16 at the hem, which is formed by providing an elastic member such as an elastic cord around the wearer's body, and is a means to prevent air in the space between the garment body 11 and the wearer's body from leaking out from the hem of the garment body 11.

[0025] Furthermore, air discharge sections 14 are formed in the opening between the wearer's neck and the end of the collar of the garment body 11, and in the opening between the wearer's arm and the end of the sleeve of the garment body 11. These sections allow air introduced into the space between the garment body 11 and the wearer's body by the fan 1A to circulate along the wearer's body or underwear before being discharged.

[0026] Furthermore, as shown in Figure 2, the inner surface of the garment body 11 is provided with a power supply unit holding means 17 formed in the shape of a pocket capable of housing the power supply unit 12 in order to hold the power supply unit 12 in a position where power can be supplied to the fan 1A through the connecting cable 13, and a cable holding means 18 formed in the shape of a ring with an opening through which the connecting cable 13 can be inserted, by sewing a vertically long piece of fabric at two locations, top and bottom, in order to hold the connecting cable 13 on the inner surface of the garment body 11.

[0027] Furthermore, as shown in Figures 1 and 2, fan mounting holes 19 are formed on the back of the garment body 11 at positions corresponding to the left and right sides of the wearer's waist. These holes are circular openings that connect the space between the garment body 11 and the wearer's body with the space outside the garment body 11 when the fan-equipped garment 10 is worn.

[0028] The diameter of the fan mounting hole 19 is formed to be approximately the same as the diameter of the cylindrical portion 22 of the case body 2 of the fan 1A, which will be described later. By attaching the fan 1A to the garment body 11 such that the cylindrical portion 22 passes through the fan mounting hole 19, outside air can be drawn into the space between the garment body 11 and the wearer's body through the fan mounting hole 19.

[0029] It is preferable that the area around the fan mounting hole 19 is reinforced by methods such as attaching a flat, annular member made of plastic or the like, or folding and sewing the portion of the garment fabric forming the garment body 11 around the fan mounting hole 19.

[0030] <Example of fan configuration in this embodiment> Figures 3 and 4 are exploded perspective views showing an example of a fan according to the embodiment. Fan 1A is a means for introducing air into the space between the garment body 11 and the wearer's body through the fan mounting hole 19 shown in Figure 1, and the necessary power is supplied from the power supply unit 12 via the connecting cable 13, as shown in Figure 2.

[0031] Fan 1A comprises a case body 2 and a mounting member 200 for attaching the case body 2 to the wear body 11, which is the object to be attached.

[0032] The case body 2 is a two-part structure comprising a front case section 20 and a rear case section 21 that can be attached to or removed from the front case section 20. Both the front case section 20 and the rear case section 21 are made of resin.

[0033] The front case portion 20 is an example of the first case portion and comprises a cylindrical portion 22 and a flange portion 23 that protrudes outward from the outer circumference of the cylindrical portion 22.

[0034] The cylindrical portion 22 is cylindrical in shape, and at one end along the axial direction of the cylindrical shape, the front end, a vent 22a through which air passes and a motor case 22b to which a motor (not shown) is attached are formed. The cylindrical portion 22 also has a flange portion 23 formed at the other end along the axial direction, the rear end. The rear case portion 21 is attached to the flange portion 23 of the front case portion 20.

[0035] The ventilation opening 22a is composed of a combination of lattice-shaped or radially shaped ribs and openings between the ribs. The spacing and shape of the ribs are set so that air can pass through while preventing foreign matter from entering the cylindrical part 22 through the ventilation opening 22a.

[0036] The motor case 22b is constructed by providing a convex portion at the radial center of the front end of the cylindrical portion 22, which protrudes toward the rear end. The fan 1A has a motor (not shown) mounted on the motor case 22b, and an impeller (not shown) is mounted on the shaft of this motor.

[0037] The flange portion 23 is shaped to extend around the entire circumference and protrudes outward from the outer circumference of the rear end of the cylindrical portion 22. The end face 23a of the flange portion 23, which faces the rear case portion 21 attached to the front case portion 20, is exposed at the rear end of the cylindrical portion 22.

[0038] The rear case portion 21 is an example of a second case portion, and is disc-shaped, covering the rear end of the front case portion 20 where the flange portion 23 is formed. The rear case portion 21 has a ventilation opening 21a through which air passes. The ventilation opening 21a is composed of a combination of ribs of a predetermined shape, such as a grid or radial pattern, and openings between the ribs. The spacing and shape of the ribs of the ventilation opening 21a are set so that air can pass through, while preventing foreign matter from entering the cylindrical portion 22 of the front case portion 20 to which the rear case portion 21 is attached.

[0039] The rear case portion 21 has a peripheral edge portion 21b formed on the outside of the ventilation opening 21a, which faces the flange portion 23 of the front case portion 20.

[0040] <An example of the mounting structure for the front and rear case sections> Figure 5 is a side cross-sectional view of the main part showing the front and rear case parts attached together, Figure 6A is a side view of the main part of the front case part showing an example of the engaging piece and locking part, and Figure 6B is a side cross-sectional view of the main part of the rear case part showing an example of the engaged part and locking part. Furthermore, Figure 7A is a perspective view of the main part of the front case part showing an example of the engaging piece and locking part, and Figure 7B is a broken perspective view of the main part of the rear case part showing an example of the engaged part and locking part.

[0041] The front case portion 20 is equipped with an engaging piece 3 that restricts relative movement (rotation) between the front case portion 20 and the rear case portion 21 along the circumferential direction. The rear case portion 21 is equipped with an engaged portion 4 that restricts relative movement (rotation) between the front case portion 20 and the rear case portion 21 along the circumferential direction.

[0042] Furthermore, the front case portion 20 is provided with a locking portion 5 that restricts relative movement between the front case portion 20 and the rear case portion 21 along the axial direction. The rear case portion 21 is provided with a locking portion 6 that restricts relative movement between the front case portion 20 and the rear case portion 21 along the axial direction.

[0043] In this example, the engaging pieces 3 are provided at four locations along the circumferential direction of the flange portion 23 of the front case portion 20. The engaged portions 4 are provided at four locations along the circumferential direction of the peripheral edge portion 21b of the rear case portion 21, corresponding to the positions of the engaging pieces 3. Furthermore, the locking portions 5 are provided at four locations along the circumferential direction of the flange portion 23 of the front case portion 20, adjacent to the engaging pieces 3. The locked portions 6 are provided at four locations along the circumferential direction of the peripheral edge portion 21b of the rear case portion 21, adjacent to the engaged portions 4, corresponding to the positions of the locking portions 5.

[0044] The engaging piece 3 is an example of an engaging means and comprises a tongue-shaped piece 30 extending along the circumferential direction of the flange portion 23 and an engaging portion 31 formed at the end of the tongue-shaped piece 30 in the extending direction. The engaging piece 3 is integrally constructed with the flange portion 23, with the tongue-shaped piece 30 and the engaging portion 31 being connected to the flange portion 23, and one end of the tongue-shaped piece 30 being connected to the flange portion 23. As a result, the base end of the tongue-shaped piece 30 connected to the flange portion 23 becomes a fixed end 32 relative to the flange portion 23.

[0045] Furthermore, in the engaging piece 3, a slit 33 is formed between the tongue-shaped piece 30 and the cylindrical piece 22, extending from the fixed end 32 of the tongue-shaped piece 30 towards the end of the tongue-shaped piece 30 in the extending direction, along the circumferential direction of the flange portion 23. As a result, the end of the tongue-shaped piece 30 in the extending direction becomes a free end 34.

[0046] As described above, the front case portion 20 is made of resin, and the engaging piece portion 3 is configured such that the tongue-shaped piece portion 30 can bend due to elastic deformation in the thickness direction of the flange portion 23.

[0047] The engaging portion 31 is provided on the free end 34 side of the tongue-shaped piece portion 30. The engaging portion 31 has a concave-convex shape, with a plurality of protrusions 31a that project from the end face 23a of the flange portion 23 and a plurality of recesses 31b that are concave relative to the protrusions 31a, arranged along the circumferential direction of the flange portion 23. The cross-sectional shape of the protrusions 31a of the engaging portion 31 is triangular, and the cross-sectional shape of the recesses 31b is inverted triangular. The slanted surfaces of the protrusions 31a and the slanted surfaces of the recesses 31b of the engaging portion 31 form a guide surface 31c that causes the tongue-shaped piece portion 30 to bend when pressed by the engaged portion 4.

[0048] When the front case portion 20 is viewed from the flange portion 23 side, the tongue-shaped portion 30 of the engaging piece 3 extends clockwise from the fixed end 32 as indicated by arrow C1, and the engaging portion 31 is provided at the free end 34, which is the end of the tongue-shaped portion 30 in the direction of extension.

[0049] As a result, the engaging piece 3 is displaced from an engaged position where it protrudes from the end face 23a of the flange portion 23 to a retracted position where it is substantially flush with the end face 23a of the flange portion 23, due to the elastic deformation of the tongue-shaped piece 30 in the thickness direction of the flange portion 23. When the engaging piece 3 is in the engaged position where the protrusion 31a of the engaging piece 31 protrudes from the end face 23a of the flange portion 23, the back surface of the tongue-shaped piece 30 is substantially flush with the back surface of the end face 23a of the flange portion 23.

[0050] The engaged portion 4 is an example of an engaged means, and is provided on the back surface 21c of the peripheral edge 21b of the rear case portion 21 that faces the flange portion 23 of the front case portion 20 when the rear case portion 21 is attached to the front case portion 20.

[0051] The engaged portion 4 has a concave-convex shape, with a plurality of recesses 40a that are concave relative to the back surface 21c of the peripheral portion 21b, and a plurality of convex portions 40b that are convex relative to the recesses 40a, arranged along the circumferential direction of the peripheral portion 21b. The engaged portion 4 has an inverted triangular cross-sectional shape for the recesses 40a and a triangular cross-sectional shape for the convex portions 40b, and its concave-convex shape matches that of the engaged portion 31 of the front case portion 20. The engaged portion 4 has a guide surface 40c formed by the inclined surfaces of the recesses 40a and the inclined surfaces of the convex portions 40b, which presses against the engaged portion 31 of the engaging piece portion 3, causing the tongue-shaped piece portion 30 to bend.

[0052] The locking portion 5 is an example of a locking means, and protrudes in an inverted L shape from the end face 23a of the flange portion 23. When the front case portion 20 is viewed from the flange portion 23 side, the locking portion 5 extends counterclockwise as indicated by arrow C2. An opening 50 is formed between the locking portion 5 and the engaging portion 31 of the engaging piece portion 3.

[0053] The locking portion 6 is an example of a locking means, and protrudes from the engaging portion 4 along the circumferential direction of the peripheral edge portion 21b. The locking portion 6 has a thickness approximately equal to that of the gap between the locking portion 5 and the end face 23a of the flange portion 23, and when the rear case portion 21 is attached to the front case portion 20, it enters the gap between the locking portion 5 and the end face 23a of the flange portion 23 from the opening 50 between the locking portion 5 and the engaging piece portion 3.

[0054] The locked portion 6 is equipped with a guide portion 60. The guide portion 60 is constructed by providing a slope at the tip of the locked portion 6 that comes into contact with the locked portion 5 during the operation of attaching the rear case portion 21 to the front case portion 20.

[0055] The rear case portion 21 is provided with a locking portion operating space 21d that allows the locking portion 5 of the front case portion 20 to move during the operation of attaching the rear case portion 21 to the front case portion 20. The locking portion operating space 21d is configured by providing an opening along the circumferential direction of the peripheral edge portion 21b that connects from the locked portion 6.

[0056] Figure 8 is a plan view showing an example of a mounting member, and the mounting member 200 will now be described. The mounting member 200 is an example of a mounting means, and its shape when viewed from the axial direction is elliptical. Two predetermined parts of the mounting member 200 that face each other in the short axis direction are provided with protrusions 200a. The inner diameter of the mounting member 200 in the short axis direction is configured to be approximately the same as the outer diameter of the cylindrical part 22 of the front case part 20 shown by the dashed line in Figure 8. The mounting member 200 is integrally formed from resin and is flexible.

[0057] As shown in Figure 4, the fan 1A has a fitting recess 22c formed in the cylindrical portion 22 of the front case portion 20. The fitting recess 22c is provided to match the positions of the pair of protrusions 200a of the mounting member 200, and the protrusions 200a fit into it.

[0058] To attach the mounting member 200 to the fan 1A, the parts of the mounting member 200 that face each other in the direction of the long axis are pressed from both sides. When the parts of the mounting member 200 that face each other in the direction of the long axis are pressed from both sides, the part of the mounting member 200 in the direction of the short axis bulges outward, and the mounting member 200 can be deformed into a roughly circular shape. At this time, the distance between the pair of protrusions 200a of the mounting member 200 becomes slightly wider than the outer diameter of the cylindrical part 22 of the front case part 20. This allows the mounting member 200 to be inserted into the cylindrical part 22 of the front case part 20.

[0059] Then, when the projection 200a of the mounting member 200 and the fitting recess 22c of the cylindrical portion 22 are aligned and the pressing force is released, the mounting member 200 returns to its original shape, and the projection 200a of the mounting member 200 fits into the fitting recess 22c of the cylindrical portion 22.

[0060] The mounting member 200 is attached so as to cover the outer circumferential surface of the cylindrical portion 22 of the front case portion 20, so that the end face of the mounting member 200 and the back surface of the flange portion 23 face each other. The fan 1A is attached to the wear body 11 so that the cylindrical portion 22 passes through the fan mounting hole 19 shown in Figures 1 and 2, so that the periphery of the fan mounting hole 19 is sandwiched between the end face of the mounting member 200 and the back surface of the flange portion 23.

[0061] <An example of attaching and detaching the front and rear case sections> Figures 9A, 9B, and 9C are cross-sectional views of the main parts showing an example of the operation of removing the rear case from the front case, and Figures 10A, 10B, 10C, 10D, and 10E are cross-sectional views of the main parts showing an example of the operation of attaching the rear case to the front case.

[0062] To remove the rear case portion 21 from the front case portion 20, apply a force to rotate the rear case portion 21 counterclockwise relative to the front case portion 20, as shown by arrow C2, as shown in Figure 9A.

[0063] The engaging portion 31 of the engaging piece 3 of the front case portion 20 and the engaged portion 4 of the rear case portion 21 have their respective convex portions 31a and concave portions 31b and concave portions 40a and convex portions 40b in contact with each other via guide surfaces 31c and 40c that are inclined with respect to the rotational direction of the rear case portion 21 relative to the front case portion 20.

[0064] As a result, when a force is applied to rotate the rear case portion 21 counterclockwise relative to the front case portion 20, as indicated by arrow C2, a force is generated in which the engaged portion 4 of the rear case portion 21 pushes the engaged portion 31 of the engaging piece 3 of the front case portion 20 in the axial direction of the cylindrical portion 22.

[0065] Therefore, as shown in Figure 9B, the tongue-shaped piece 30 of the engaging piece 3 bends in the direction that the engaging portion 31 retracts from the engaged portion 4, and the engagement between the engaging portion 31 of the engaging piece 3 and the engaged portion 4 is released. Thus, the rear case portion 21 can be rotated counterclockwise relative to the front case portion 20, as indicated by arrow C2.

[0066] When the rear case portion 21 is further rotated counterclockwise relative to the front case portion 20, as indicated by arrow C2, the locking portion 6 of the rear case portion 21 disengages from the locking portion 5 of the front case portion 20, as shown in Figure 9C. This allows the rear case portion 21 to be removed from the front case portion 20.

[0067] To attach the rear case portion 21 to the front case portion 20, as shown in Figure 10A, the locking portion 5 of the front case portion 20 is inserted into the locking portion operating space 21d of the rear case portion 21, and the rear case portion 21 is rotated clockwise relative to the front case portion 20 as indicated by arrow C1.

[0068] When the rear case portion 21 is rotated clockwise relative to the front case portion 20, as indicated by arrow C1, as shown in Figure 10B, the locking portion 6 of the rear case portion 21 enters the opening 50 between the locking portion 5 and the engaging piece portion 3 of the front case portion 20, and the guiding portion 60 of the locking portion 6 comes into contact with the locking portion 5. Since the locking portion 6 and the locking portion 5 come into contact with the inclined surface of the guiding portion 60, when the rear case portion 21 is rotated clockwise relative to the front case portion 20, as indicated by arrow C1, the locking portion 6 and the engaging portion 4 of the rear case portion 21 exert a force that pushes the engaging portion 31 of the engaging piece portion 3 of the front case portion 20 in the axial direction of the cylindrical portion 22.

[0069] Therefore, as shown in Figure 10C, the tongue-shaped piece 30 of the engaging piece 3 bends in a direction that retracts the engaging piece 31 from the engaged piece 4, allowing the rear case piece 21 to rotate clockwise relative to the front case piece 20 as indicated by arrow C1. When the rear case piece 21 is rotated further clockwise relative to the front case piece 20 as indicated by arrow C1, the locked piece 6 and the locking piece 5 come into contact with the inclined surface of the guide piece 60, causing the rear case piece 21 to move toward the front case piece 20, and as shown in Figure 10D, the locked piece 6 of the rear case piece 21 fits between the locking piece 5 and the flange piece 23 of the front case piece 20.

[0070] With the locked portion 6 of the rear case portion 21 positioned between the locking portion 5 of the front case portion 20 and the flange portion 23, if the rear case portion 21 is further rotated clockwise relative to the front case portion 20 as indicated by arrow C1, the position of the convex portion 31a of the engaging portion 31 of the engaging piece portion 3 of the front case portion 20 and the concave portion 40a of the engaged portion 4 of the rear case portion 21 will align, and the position of the concave portion 31b of the engaging portion 31 of the engaging piece portion 3 of the front case portion 20 and the convex portion 40b of the engaged portion 4 of the rear case portion 21 will align.

[0071] As a result, the tongue-shaped piece 30 of the engaging piece 3 elastically returns to its original position as the engaging portion 31 approaches the engaged portion 4, and as shown in Figure 10E, the convex portion 31a of the engaging portion 31 fits into the concave portion 40a of the engaged portion 4, and the concave portion 31b of the engaging portion 31 fits into the convex portion 40b of the engaged portion 4, thereby engaging the engaging portion 31 of the engaging piece 3 with the engaged portion 4.

[0072] Therefore, the front case portion 20 and the rear case portion 21 are attached in a state where their relative movement (rotation) along the circumferential direction of the flange portion 23 is restricted. In addition, the locked portion 6 of the rear case portion 21 is positioned between the locking portion 5 of the front case portion 20 and the flange portion 23, thereby locking the locked portion 6 to the locking portion 5, and the front case portion 20 and the rear case portion 21 are attached in a state where their relative movement along the axial direction is restricted.

[0073] The engaging piece 3 has a tongue-shaped piece 30 that extends in the circumferential direction of the flange portion 23. This makes it easier for the tongue-shaped piece 30 to elastically deform due to the relative movement (rotation) of the front case portion 20 and the rear case portion 21 along the circumferential direction of the flange portion 23. However, it is necessary to prevent the engagement between the engaging portion 31 of the front case portion 20 and the engaged portion 4 of the rear case portion 21 from unintentionally disengaging.

[0074] Therefore, when the front case portion 20 is viewed from the flange portion 23 side, the tongue-shaped piece portion 30 of the engaging piece portion 3 extends clockwise from the fixed end 32 as indicated by arrow C1. Due to the relative movement (rotation) of the front case portion 20 and the rear case portion 21 along the circumferential direction of the flange portion 23, the downstream side in the direction in which the engaging portion 31 and the engaged portion 4 of the engaging piece portion 3 becomes the free end 34 side. The engaging portion 31 is provided at the free end 34, which is the end of the tongue-shaped piece portion 30 in the extension direction.

[0075] As a result, when the rear case portion 21 is rotated clockwise relative to the front case portion 20, as indicated by arrow C1, in order to attach the rear case portion 21 to the front case portion 20, the tongue-shaped piece portion 30 is more easily elastically deformed than when the rear case portion 21 is rotated counterclockwise relative to the front case portion 20, as indicated by arrow C2, in order to remove the rear case portion 21 from the front case portion 20.

[0076] Therefore, the rear case portion 21 can be easily removed from the front case portion 20 to clean the inside of the fan 1A, while preventing the engagement between the engaging portion 31 of the front case portion 20 and the engaged portion 4 of the rear case portion 21 from unintentionally disengaging.

[0077] Furthermore, when the fan 1A is attached to the garment body 11, the peripheral edge of the fan mounting hole 19 is sandwiched between the end face of the mounting member 200 and the back surface of the flange portion 23, and the tongue-shaped piece 30 of the engaging piece 3 exposed on the back surface of the flange portion 23 contacts the peripheral edge of the fan mounting hole 19. As a result, when attempting to remove the rear case portion 21 from the front case portion 20 by rotating the rear case portion 21 counterclockwise relative to the front case portion 20 with the fan 1A attached to the garment body 11, the bending of the tongue-shaped piece 30 of the engaging piece 3 is suppressed by the peripheral edge of the fan mounting hole 19.

[0078] Therefore, it is possible to prevent the removal of the rear case section 21 from the front case section 20 while the fan 1A is attached to the garment body 11, and to prevent the removal of the rear case section 21 from the front case section 20 while power can be supplied to the fan 1A.

[0079] In this example, the engaging pieces 3 and locking pieces 5 are provided at four locations along the circumferential direction of the flange portion 23 of the front case portion 20, and the engaged pieces 4 and locked pieces 6 are provided at four locations along the circumferential direction of the peripheral edge portion 21b of the rear case portion 21, but the number of these is not limited to this. Furthermore, in the case of multiple pairs of engaging pieces 3 and locking pieces 5, one or two locations may be provided with only the locking piece 5 without the engaging piece 3, and the corresponding pairs of engaged pieces 4 and locked pieces 6 may also be provided with only the locked piece 6 without the engaged piece 4. [Explanation of symbols]

[0080] 1A...Fan, 2...Case body, 20...Front case section, 21...Rear case section, 21a...Ventilation opening, 21b...Peripheral edge, 21c...Back surface, 21d...Operating space for locking part, 22...Cylindrical section, 22a...Ventilation opening, 22b...Motor case, 22c...Fitting recess, 23...Flange section, 23a...End face, 3...Engaging piece (engaging means), 30...Tongue-shaped piece, 31...Engaging part, 3 1a...Convex part, 31b...Concave part, 31c...Guiding surface, 32...Fixed end, 33...Slit, 34...Free end, 4...Engaged part (engaged means), 40a...Concave part, 40b...Convex part, 40c...Guiding surface, 5...Locking part (locking means), 6...Locking part (locking means), 60...Guiding part, 10...Fan-equipped wear, 11...Wear body, 200...Mounting member, 200a...Protrusion

Claims

1. It comprises a case body having a motor case to which a motor that rotates the impeller is attached, The aforementioned case body is The first case section, The first case portion is further equipped with a second case portion that is detachable from it. The first case portion is, A cylindrical part, A flange portion protruding outward from the outer circumference of the cylindrical portion, The flange portion is provided with engaging means for restricting the relative movement between the first case portion and the second case portion along the circumferential direction, The second case section described above is The flange portion is provided with engaging means for restricting the relative movement between the first case portion and the second case portion along the circumferential direction, The aforementioned engaging means is A tongue-shaped piece having flexibility extends along the circumferential direction of the flange portion, with one end serving as a fixed end relative to the flange portion and the other end as a free end, The tongue-shaped piece is provided on the free end side and comprises an engaging portion which has a convex portion that protrudes from the surface of the flange portion facing the second case portion and a concave portion which is concave relative to the convex portion, arranged along the circumferential direction of the flange portion, The engaged means is The second case portion, facing the flange portion, has a recess that is concave and a protrusion that is convex relative to the recess, arranged along the circumferential direction of the second case portion, and includes an engaged portion that engages with the engaging portion, The tongue-shaped portion, as it moves relative to the first case portion and the second case portion along the circumferential direction of the flange portion, has the free end on the downstream side in the direction in which the engaging portion and the engaged portion engage. fan.

2. The first case portion is, The cylindrical portion is equipped with locking means for restricting the relative movement of the first case portion and the second case portion along the axial direction, The second case section described above is The cylindrical portion is provided with locking means for restricting the relative movement of the first case portion and the second case portion along the axial direction, When the first case portion and the second case portion move relative to each other along the circumferential direction of the flange portion to a position where the engaging portion and the engaged portion engage, the locking means and the locked means lock together. The fan according to claim 1.

3. The engaging portion is provided with a guide surface that causes the tongue-shaped piece to bend when pressed against the engaged portion, and the engaged portion is provided with a guide surface that causes the tongue-shaped piece to bend when pressed against the engaging portion. The fan according to claim 1.

4. The case body is provided with mounting means for attaching it to an object to be attached. The fan according to claim 1.

5. The tongue-shaped piece is exposed on the back surface of the flange and contacts the object to be attached to the case body by the mounting means. The fan according to claim 4.

6. A fan according to any one of Claims 1 to 5, A garment comprising a body covering at least part of the wearer's body. Fan-equipped clothing.

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