Fan housing, motor unit and moving body

Abstract

The fan housing (1) includes a first component (2) and a second component (3). The first component includes a first main body (21) and one or more hooks (23). When viewed from above in a first direction, the one or more hooks are arranged at one or more locations on the periphery of the first main body. The second component includes a second main body (31) and one or more claws (33). When viewed from above in the first direction, the one or more claws are arranged on the periphery of the second main body at positions corresponding to the one or more hooks for hooking. At least one of the one or more hooks extends from the end of the first opening of the first main body toward the second component side along the first direction.

Description

Technical Field

[0001] The present disclosure relates to a fan case, a motor unit, and a mobile object. More specifically, the present disclosure relates to a fan case including a first member and a second member, a motor unit including the fan case, and a mobile object including the motor unit. Background Art

[0002] Patent Document 1 describes a coupling structure between air conditioning units. The coupling structure described in Patent Document 1 includes a locking hole formed above the mating portion of one air conditioning unit, projecting from one air conditioning unit toward the other; and a locking protrusion that protrudes from the other air conditioning unit and is inserted into the locking hole to engage. The two air conditioning units are coupled by inserting the locking protrusion into the locking hole and engaging the mating portions.

[0003] However, in the existing coupling structure described in Patent Document 1, the locking hole and the locking protrusion are located outside (protruding) in a direction perpendicular to the direction in which the two air conditioning units are coupled together, so there is a problem that the air conditioning units coupled together by the coupling structure become larger.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2006-315583 Summary of the Invention

[0007] The present disclosure is an invention made in view of the above-mentioned circumstances, and an object of the present disclosure is to provide a fan case, a motor unit, and a moving object that can be miniaturized.

[0008] A fan housing according to one embodiment of the present disclosure houses a motor. In the motor, a rotor including a rotating shaft extending in a first direction rotates about the axis of the rotating shaft. The fan housing includes a first member and a second member. The first and second members are coupled to each other along the first direction. The first member includes a first main body and one or more hooks. The first main body has a first opening that opens toward the second member. When viewed from above in the first direction, the one or more hooks are arranged on the outer periphery of the first main body. The second member includes a second main body and one or more claws. The second main body has a second opening that opens toward the first member. When viewed from above in the first direction, the one or more claws are arranged on the outer periphery of the second main body at positions corresponding to the one or more hooks for hooking by the one or more hooks. At least one of the one or more hooks extends from an end of the first opening of the first main body toward the second member along the first direction.

[0009] Furthermore, the one or more hooks may be a plurality of hooks, the one or more claws may be a plurality of claws, and the first member and the second member may be coupled to each other by hooking each of the plurality of hooks on a corresponding claw of the plurality of claws.

[0010] Furthermore, it is preferable that at least one of an outer surface and an inner surface of each of the one or more hooks is along the outer peripheral surface of the first main body portion when viewed in plan from the first direction.

[0011] Furthermore, it is preferable that the outer surface of the hook be curved along the outer peripheral surface of the first main body portion when viewed in plan from the first direction.

[0012] In addition, it is preferred that the outer surface of the hook is flat.

[0013] In addition, the first component may have a flange provided at the end of the first opening of the first main body, and the flange may be provided at the end of the first opening in such a manner as to generate a gap between the flange and the hook in the circumferential direction of the first main body.

[0014] Furthermore, the first member may include a protrusion provided on an extension line of the hook in the first body portion in the first direction.

[0015] Furthermore, in the first direction, a first distance between the flange and a first hooking portion of the hook on which the claw is hooked may be shorter than a second distance between the second opening of the second main body and a second hooking portion of the claw on which the hook is hooked.

[0016] Furthermore, the first member or the second member may include an outer peripheral flange of an exhaust port.

[0017] Furthermore, it is preferable that the tip of the claw be along the outer peripheral surface of the first main body portion when viewed in plan from the first direction.

[0018] Furthermore, it is preferable that the one or more hooks are a plurality of hooks, the first main body portion has an outer peripheral surface including a plurality of regions having mutually different curvatures, and the plurality of hooks are arranged along the outer peripheral surface.

[0019] Furthermore, it is preferable that the one or more hooks and the one or more claws are located inside an outermost portion of the first main body portion when viewed in plan from the first direction.

[0020] A motor unit according to one aspect of the present disclosure includes the fan case and the motor.

[0021] A mobile object according to one aspect of the present disclosure includes the motor unit and a mobile object body. The motor unit is mounted on the mobile object body.

[0022] According to the fan housing, the motor unit, and the mobile object of the above-described aspects of the present disclosure, it is possible to achieve miniaturization of the fan housing, the motor unit, and the mobile object. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a perspective view of the fan case according to Embodiment 1.

[0024] Figure 2 It is a side view of the fan case of the first embodiment.

[0025] Figure 3 It is a top view of the fan case of the first embodiment.

[0026] Figure 4 It is an exploded perspective view of the fan case in the first embodiment.

[0027] Figure 5 It is a perspective view of the first member of the fan case in the first embodiment.

[0028] Figure 6 This is an exploded perspective view of the main parts of the motor unit according to the first embodiment.

[0029] Figure 7A It is a perspective view of the hook of the first member of the fan case in the first embodiment.

[0030] Figure 7B It is a perspective view of the claw of the second member of the fan case in the first embodiment.

[0031] Figure 8A It is a perspective view of the hook and the claw when the first member and the second member are fitted together in the fan case of the first embodiment.

[0032] Figure 8B It is a front view of the hook and the claw when the first member and the second member are fitted together in the fan case of the first embodiment.

[0033] Figure 8C It is a side view of the hook and the claw when the first member and the second member are fitted together in the fan case of the first embodiment.

[0034] Figure 9 This is an external view of the motor unit according to the first embodiment.

[0035] Figure 10 This is a perspective view of a fan case according to Embodiment 2.

[0036] Figure 11 It is a top view of the fan case of this Embodiment 2.

[0037] Figure 12 It is an exploded perspective view of the fan case according to the second embodiment.

[0038] Figure 13A It is a perspective view of the hook of the first member of the fan case according to the second embodiment.

[0039] Figure 13B It is a perspective view of the claw of the second member of the fan case according to the second embodiment.

[0040] Figure 14A It is a perspective view of the hook and the claw when the first member and the second member are fitted together in the fan case of the second embodiment.

[0041] Figure 14B It is a front view of the hook and the claw when the first member and the second member are fitted together in the fan case of the second embodiment.

[0042] Figure 14C It is a side view of the hook and the claw when the first member and the second member are fitted together in the fan case of the second embodiment.

[0043] Figure 15 This is a perspective view of a fan case according to a third embodiment.

[0044] Figure 16 It is a top view of the fan case of the third embodiment.

[0045] Figure 17 It is an exploded perspective view of the fan case of the third embodiment.

[0046] Figure 18It is a perspective view of the first member of the fan case according to the third embodiment.

[0047] Figure 19A It is a perspective view of the hook of the first member of the fan case according to the third embodiment.

[0048] Figure 19B It is a perspective view of the claw of the second member of the fan case in the third embodiment.

[0049] Figure 20A It is a perspective view of the hook and the claw when the first member and the second member are fitted together in the fan case of the third embodiment.

[0050] Figure 20B It is a front view of the hook and the claw when the first member and the second member are fitted together in the fan case of the third embodiment.

[0051] Figure 20C It is a side view of the hook and the claw when the first member and the second member are fitted together in the fan case of the third embodiment.

[0052] Figure 21 This is a schematic diagram of a vehicle according to a fourth embodiment. DETAILED DESCRIPTION

[0053] The fan housings and motor units of Embodiments 1 and 2, and the vehicle (mobile object) of Embodiment 4 are described below with reference to the accompanying drawings. The figures referenced in the following embodiments are schematic, and the sizes and thicknesses of the components and their ratios do not necessarily reflect actual dimensional ratios.

[0054] (Implementation 1)

[0055] (1) Fan housing

[0056] The structure of the fan case 1 according to the first embodiment will be described with reference to the drawings.

[0057] Figure 1 1 is a perspective view of the fan housing 1 according to the first embodiment. Figure 1 As shown, the fan case 1 of the first embodiment includes a first member 2 and a second member 3. The fan case 1 has a structure in which the first member 2 and the second member 3 are coupled to each other along a first direction D1.

[0058] The fan housing 1 is used, for example, to have Figure 6 The motor 41 shown is as follows Figure 9 The motor unit 4 is shown. Figure 9 This is an external view of the motor unit according to the first embodiment. Figure 6 This is an exploded perspective view of the main parts of the motor unit according to Embodiment 1. The fan case 1 houses the motor 41 .

[0059] (2) Motor unit

[0060] The structure of the motor unit 4 will be described with reference to the drawings.

[0061] like Figure 9 As shown in FIG. 1 , the motor unit 4 of the first embodiment includes a fan housing 1. Figure 6 As shown, the motor unit 4 includes a motor 41, a substrate 42, a substrate guide 43, a motor housing 44, a bottom plate 45, a connector 46, and a blade 47 (see Figure 21 ). Figure 21 This is a schematic diagram of a vehicle according to a fourth embodiment.

[0062] The motor unit 4 is connected to the cable 53 (see Figure 21 ) and the control device 52 (refer to Figure 21 The motor unit 4 is electrically connected to the control device 52 via a cable 53. The motor 41 is driven to rotate based on a control signal from the control device 52.

[0063] The motor unit 4 is used for a movable body, for example. Examples of movable bodies using the motor unit 4 include vehicles such as four-wheeled vehicles, two-wheeled vehicles, and three-wheeled vehicles.

[0064] (3) Structural elements of the fan housing

[0065] Hereinafter, the components of the fan housing 1 according to the first embodiment will be described with reference to the accompanying drawings. As described above, the fan housing 1 includes the first member 2 and the second member 3 (see FIG. Figure 1 ).

[0066] Figure 1 The fan housing 1 shown houses blades 47 (see Figure 21 ). The fan housing 1 also accommodates Figure 6 The motor housing 44, the bottom plate 45 and the connector 46 are shown. The fan housing 1 is formed of resin or the like.

[0067] (3.1) Component 1

[0068] Figure 2 It is a side view of the fan case 1 according to the first embodiment. Figure 3 It is a plan view of the fan case 1 according to the first embodiment. Figure 4 It is an exploded perspective view of the fan case 1 according to the first embodiment. Figure 5 1 is a perspective view of the first member 2 of the fan housing 1 of the first embodiment. Figures 1 to 5 As shown, the first member 2 includes a first main body 21, a protruding portion 22, a plurality of (five in the example shown) hooks 23, a plurality of (three in the example shown) flanges 24 (see FIG. Figure 5) and multiple protrusions 251~255.

[0069] (3.1.1) Main body part 1

[0070] like Figures 1 to 5 As shown, the first main body 21 is cylindrical and has a side surface 211 and an annular portion 212. The first main body 21 has a first opening 213 (see Figure 5 ). The side portion 211 is cylindrical. The annular portion 212 extends from one end of the side portion 211 (at Figure 4 More specifically, the annular portion 212 protrudes inward from one end of the side portion 211 so as to connect the side portion 211 and the protruding portion 22. The side portion 211 and the annular portion 212 are formed integrally.

[0071] (3.1.2) Protrusion

[0072] like Figures 1 to 5 As shown, the protrusion 22 is cylindrical and protrudes along the first direction D1 from the end of the first main body 21. More specifically, the protrusion 22 protrudes along the first direction D1 from the inner circumferential end of the annular portion 212 of the first main body 21. The protrusion 22 is located around the opening 11 described below.

[0073] (3.1.3) Hook

[0074] like Figures 1 to 5 As shown in FIG. 1 , when viewed from the first direction D1, the plurality of hooks 23 are arranged at a plurality of locations on the periphery of the first main body 21. More specifically, the plurality of hooks 23 are arranged at the end side of the side surface 211 of the first main body 21 (at Figure 4 The hooks 23 are arranged at a distance from each other along the circumferential direction of the side surface portion 211 of the first main body portion 21 (the lower end side in the middle). That is, the plurality of hooks 23 are arranged at a distance greater than a certain distance in the circumferential direction of the side surface portion 211.

[0075] The plurality of hooks 23 extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3 along the first direction D1. Figure 4 In the example, all of the plurality of hooks 23 extend from the end 214 of the first opening 213 of the first main body 21 toward the second member 3 along the first direction D1. Each hook 23 is provided at the other end of the side surface 211 of the first main body 21 (at Figure 4 Furthermore, each hook 23 extends from an end portion 214 of the side surface portion 211 of the first main body portion 21 toward the second member 3 along the first direction D1.

[0076] Figure 7A 2 is a perspective view of the hook 23 of the first member 2 of the fan housing of embodiment 1. Figure 7AAs shown, each hook 23 is in the shape of a letter U when viewed from the front of the hook 23, and has two first pieces 231 and a second piece 232. The two first pieces 231 are rectangular plates with the first direction D1 as the longitudinal direction, extending from the end 214 of the side portion 211 of the first main body 21 along the first direction D1. The second piece 232 is a rectangular plate with the direction perpendicular to the first direction D1 as the longitudinal direction, so that the front ends ( Figure 7A The second piece 232 and the two first pieces 231 are formed integrally. Each hook 23 has a hook hole 233 surrounded by the second piece 232 and the two first pieces 231.

[0077] Each of the multiple hooks 23 is plate-shaped and has an outer surface 234 and an inner surface 235 that face each other in the thickness direction of the hook 23. When viewed from above in the first direction D1, the outer surface 234 and inner surface 235 of each hook 23 are curved along the outer peripheral surface 215 of the first main body 21. More specifically, the outer surface 234 and inner surface 235 of the hook 23 are formed to approximate the curvature of the portion of the outer peripheral surface 215 of the first main body 21 where the hook 23 is provided. This configuration allows the fan case 1 to be made more compact and its aesthetic appearance to be improved.

[0078] As described above, since each hook 23 is in the U-shape, a sliding mechanism of a mold is not required when molding the first member 2 , and the first member 2 can be easily manufactured.

[0079] (3.1.4) Flange

[0080] like Figure 4 As shown, a plurality of flanges 24 are provided at the first opening 213 of the first main body 21 (see Figure 5 ) end portion 214. The plurality of flanges 24 are provided at the end portion 214 of the side portion 211 of the first main body portion 21, spaced apart from each other along the circumferential direction of the side portion 211. That is, the plurality of flanges 24 are provided at intervals of a certain distance or more in the circumferential direction of the side portion 211.

[0081] Each flange 24 is provided in a portion where no hook 23 is provided in the circumferential direction of the side surface portion 211. The flange 24 is provided between two adjacent hooks 23, for example.

[0082] Each flange 24 extends from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3 along the first direction D1. Figure 4 In the example of FIG, all of the plurality of flanges 24 extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3 along the first direction D1.

[0083] Each flange 24 has a shape such that the width of the side surface portion 211 in the circumferential direction narrows as it moves away from the end portion 214 of the side surface portion 211. The length of each flange 24 in the first direction D1 is shorter than the length of the hook 23 in the first direction D1.

[0084] When the first and second members 2 and 3 are joined, each flange 24 enters the groove 35 of the second member 3. More specifically, each flange 24 enters the groove 35 before the first and second members 2 and 3 are joined. This facilitates alignment of the first and second members 2 and 3. Therefore, the first and second members 2 and 3 can be joined easily. In other words, each flange 24 functions as a guide.

[0085] (3.1.5) Protrusion

[0086] like Figure 4 and Figure 7A As shown, multiple protrusions 251 are provided on the first body portion 21 along an extension of the hook 23. More specifically, each protrusion 251 is provided on an extension of the hook 23 in the first body portion 21 in the first direction D1. Each protrusion 251 extends along the longitudinal direction of the first piece 231 of the hook 23 in the first body portion 21. The thickness of the portion provided with the protrusion 251 is the sum of the thickness of the first body portion 21 and the thickness of the protrusion 251. Therefore, it is thicker than the thickness of the circumferential ends of the first body portion 21 (the thickness of the first body portion 21 alone).

[0087] like Figure 4 As shown in FIG. 1 , a plurality of protrusions 252 are provided along the first direction D1 on the first main body 21. More specifically, each protrusion 252 is provided at a position different from the protrusion 251 in a manner parallel to the protrusion 251. Figure 4 As shown, a plurality of protrusions 253 are provided on the annular portion 212 of the first main body 21. More specifically, each protrusion 253 is provided on the annular portion 212 of the first main body 21 at a portion that becomes the vicinity of the exhaust port 13 when the first member 2 and the second member 3 are combined. Figure 4 As shown in FIG, a plurality of protrusions 254 are provided on the annular portion 212 of the first main body portion 21. More specifically, each protrusion 254 is provided along the circumferential direction of the annular portion 212. Figure 4 As shown, a plurality of protrusions 255 are provided on the annular portion 212 of the first main body portion 21. More specifically, the protrusions 255 are provided on the annular portion 212 so as to connect the protrusions 254.

[0088] (3.2) Second component

[0089] like Figure 4 and Figure 9 As shown, the second member 3 includes a second main body portion 31 , a protruding portion 32 , and a plurality of (eg, five) claws 33 .

[0090] (3.2.1) Second main body

[0091] like Figure 4 and Figure 9 As shown, the second main body 31 is cylindrical and has a side surface 311 and an annular portion 312. The second main body 31 has a second opening 313 (see Figure 4 The side portion 311 is cylindrical. The annular portion 312 extends from one end of the side portion 311 ( Figure 4 The lower end of Figure 9 More specifically, the annular portion 312 protrudes inward from one end of the side portion 311 so as to connect the side portion 311 and the protruding portion 32. The side portion 311 and the annular portion 312 are formed integrally.

[0092] (3.2.2) Protrusion

[0093] like Figure 9 As shown, the protrusion 32 is cylindrical and protrudes along the first direction D1 from the end of the second main body 31. More specifically, the protrusion 32 protrudes along the first direction D1 from the inner peripheral end of the annular portion 312 of the second main body 31. The protrusion 32 is located around the opening 12 described below.

[0094] (3.2.3) Claw

[0095] like Figure 4 As shown, the plurality of claws 33 correspond to the plurality of hooks 23 one by one. When viewed from the first direction D1, the plurality of claws 33 are arranged at a plurality of locations on the periphery of the second member 3. The plurality of claws 33 are provided at the end portion ( Figure 4 More specifically, each claw 33 protrudes from the side surface portion 311 in a direction perpendicular to both the first direction D1 and the circumferential direction of the side surface portion 311.

[0096] The plurality of claws 33 are provided at intervals from each other around the end portion of the side surface portion 311 of the second main body portion 31. That is, the plurality of claws 33 are provided at intervals in the circumferential direction of the side surface portion 311.

[0097] like Figure 7B As shown, each claw 33 has two first pieces 331 and a second piece 332 . Figure 7BIt is a three-dimensional view of the claw 33 of the second component 3 of the fan housing 1 of embodiment 1. The two first pieces 331 are respectively in the shape of a plate with the first direction D1 as the longitudinal direction, and protrude from the side portion 311 of the second main body 31 toward the outside. The second piece 332 is in the shape of a plate with the circumferential direction of the side portion 311 of the second main body 31 as the longitudinal direction, and protrudes from the side portion 311 toward the outside. The second piece 332 and the two first pieces 331 are formed integrally. Each first piece 331 is shaped such that the height increases as it moves away from the second opening 313 in the first direction D1. In other words, the amount of protrusion of each first piece 331 increases as it moves away from the second opening 313 in the first direction D1. The second piece 332 makes the ends of the two first pieces 331 in the first direction D1 ( Figure 7B Each claw 33 has a recess 333 surrounded by the second piece 332 and the two first pieces 331.

[0098] (3.2.4) Protrusion

[0099] like Figure 4 As shown, a plurality of protrusions 34 are provided so as to protrude from the second main body 31. More specifically, the plurality of protrusions 34 are provided so as to protrude outward from the side surface 311 of the second main body 31. Each protrusion 34 has a shape with its longitudinal direction being the circumferential direction of the side surface 311 and is provided near the second opening 313.

[0100] Each protrusion 34 has an L-shaped cross section when viewed from the circumferential direction of the side surface portion 311 , and a groove 35 is formed by each protrusion 34 and the side surface portion 311 .

[0101] When the first member 2 is coupled to the second member 3 , the flange 24 of the first member 2 is inserted into the groove 35 . Before the hook 23 of the first member 2 is hooked onto the claw 33 of the second member 3 , the flange 24 is inserted into the groove 35 .

[0102] (3.2.5) Protrusion

[0103] like Figure 4 and Figure 9 As shown in FIG. 3 , a plurality of protrusions 361 are provided along the first direction D1 in the second main body 31. Figure 9 As shown, a plurality of protrusions 362 are provided on the protrusion 32. Figure 9 As shown, a plurality of protrusions 363 are provided on the annular portion 312 of the second body portion 31. More specifically, each protrusion 363 is provided on the annular portion 312 of the second body portion 31 at a portion that becomes the vicinity of the exhaust port 13 when the first member 2 and the second member 3 are coupled.

[0104] (3.3) Combination of the first and second components

[0105] like Figure 1 、 Figures 8A to 8CAs shown, the first member 2 and the second member 3 are coupled to each other by hooking the plurality of hooks 23 on corresponding claws 33 among the plurality of claws 33 . Figure 8A It is a perspective view of the hook 23 and the claw 33 when the first member 2 and the second member 3 are fitted together in the fan case 1 according to the first embodiment. Figure 8B It is a front view of the hook 23 and the claw 33 when the first member 2 and the second member 3 are fitted together in the fan case 1 of the first embodiment. Figure 8C It is a side view of the hook 23 and the claw 33 when the first member 2 and the second member 3 are fitted together in the fan case 1 of the first embodiment.

[0106] The first member 2 and the second member 3 are separated from each other before being joined ( Figure 4 (see state shown). When the first member 2 is brought closer to the second member 3 from the above state, the hook 23 of the first member 2 comes into contact with the claw 33 of the second member 3. Specifically, the second piece 232 of the hook 23 comes into contact with the first piece 331 of the claw 33. When the first member 2 is brought further closer to the second member 3, the hook 23 is bent outward by the claw 33. The amount of protrusion of the first piece 331 of the claw 33 increases as it moves away from the second opening 313, and therefore, the deflection of the first piece 231 of the hook 23 becomes greater. When the first member 2 is brought further closer to the second member 3, the second piece 232 of the hook 23 passes over the claw 33. At this time, the claw 33 is located in the hook hole 233 of the hook 23. The hook 23 returns to its original state from the outwardly bent state. Through the above-mentioned process, the first member 2 and the second member 3 are connected.

[0107] As mentioned above, Figure 8C As shown, each hook 23 extends from the end 214 of the first opening 213 of the first main body 21 toward the second member 3 along the first direction D1. In other words, the bulging of each hook 23 toward the outside of the first main body 21 (outward direction orthogonal to the first direction D1) is reduced. Specifically, in each hook 23, there is no portion on the root side (first main body 21 side) that is bent in a manner that protrudes outward from the first main body 21 and toward the lower side. The first piece 231 of each hook 23 does not protrude toward the outside (outward direction) of the first main body 21. Figure 8C ) protrudes from the left side, but extends toward the lower side.

[0108] According to the above content, if Figure 8C As shown, the protrusion amount of the hook 23 and the claw 33 can be made ( Figure 8C The amount of protrusion in the left and right directions) becomes smaller. Figure 2 As shown, when viewed from the first direction D1, the outer diameter L11 of the fan casing 1 can be shortened. That is, the fan casing 1 can be made compact.

[0109] Furthermore, since all of the plurality of hooks 23 are coupled to all of the plurality of claws 33 , the fan case 1 can be downsized and the first member 2 and the second member 3 can be coupled more firmly.

[0110] In addition, if Figure 1 、 Figure 2 、 Figure 7A 、 Figure 7B As shown, in the fan casing 1 of embodiment 1, when viewed from above from the first direction D1, the outer surface 234 and the inner surface 235 of the hook 23 among the plurality of hooks 23 are along the outer peripheral surface 215 of the first main body 21. As a result, the fan casing 1 can be miniaturized and the aesthetic appearance of the fan casing 1 can be improved. In addition, it is easy to make the thickness of the hook 23 relatively uniform. Specifically, the thickness of the hook 23 can be made constant at about 2 mm. As a result, it is easy to manufacture the first component 2 having the hook 23. In addition, in the fan casing 1, it is not necessary to make the thickness of the hook 23 constant.

[0111] In addition, if Figure 4 As shown, in the first direction D1, a first distance L21 between the front end of the flange 24 and the first hooking portion 236 of the hook 23 is shorter than a second distance L31 between the second opening 313 of the second main body 31 and the second hooking portion 334 of the claw 33. The first hooking portion 236 is the portion on which the claw 33 is hooked. The second hooking portion 334 is the portion on which the hook 23 is hooked. This enhances the guide function when joining the first member 2 and the second member 3, thereby facilitating the joining of the first member 2 and the second member 3.

[0112] Furthermore, when the first and second members 2 and 3 are coupled together, the tips of the claws 33 of the second member 3 lie along the outer peripheral surface 215 of the first main body 21 when viewed from above in the first direction D1. Specifically, the most protruding portion of the claws 33 lies along the outer peripheral surface 215. More specifically, the second pieces 332 of the claws 33 are formed to have a shape that approximates the curvature of the portion of the outer peripheral surface 215 of the first main body 21 where the corresponding hooks 23 are located. This allows for miniaturization of the fan case 1 and improves the aesthetic appearance of the fan case 1.

[0113] Furthermore, the first main body 21 has an outer peripheral surface 215 including multiple regions with different curvatures. When viewed from above in the first direction D1, the outer surfaces 234 of the multiple hooks 23 curve along the outer peripheral surface 215 of the first main body 21. In other words, the shapes of the multiple hooks 23 vary depending on the location in the first main body 21 where they are installed. This allows for a more compact fan case 1 and improves the aesthetic appearance of the fan case 1.

[0114] In addition, each hook 23 is provided separately from the flange 24. Therefore, even if stress is applied to the hook 23 due to deflection of the hook 23, the stress of the hook 23 can be prevented from affecting the flange 24.

[0115] (3.4) Opening

[0116] like Figure 1 and Figure 9 As shown, the fan housing 1 has two openings 11 and 12. More specifically, the first member 2 has the opening 11, and the second member 3 has the opening 12. The opening 11 is formed at one end of the first member 2 in the first direction D1 ( Figure 1 The opening 12 is formed at one end ( Figure 9 When the fan housing 1 accommodates the bottom plate 45, a portion of the bottom plate 45 is embedded in the opening 12.

[0117] (3.5) Outer flange of exhaust port

[0118] like Figure 1 and Figure 4 As shown, the fan case 1 has an outer peripheral flange 14 of an exhaust port 13 for exhaust. More specifically, in the fan case 1 of Embodiment 1, the second member 3 has an outer peripheral flange 14. The exhaust port 13 has an opening surface whose normal line is a direction perpendicular to the first direction D1.

[0119] The peripheral flange 14 is frame-shaped and includes two first pieces 141, a second piece 142, and a third piece 143. In the first embodiment, the two first pieces 141, the second piece 142, and the third piece 143 are formed integrally. The two first pieces 141 are opposed to each other in directions perpendicular to both the first direction D1 and the normal direction of the opening surface of the exhaust port 13. Each first piece 141 is a rectangular plate with the first direction D1 as the longitudinal direction. The second piece 142 is a rectangular plate with the first direction D1 and the normal direction of the opening surface of the exhaust port 13 as the longitudinal direction. The third piece 143 is a rectangular plate located below the second piece 142 and with the first direction D1 and the normal direction of the opening surface of the exhaust port 13 as the longitudinal direction.

[0120] When joining the first member 2 and the second member 3, the first member 2 can be brought closer to the second member 3 so that the end 27 of the first member 2 is along the upper portion of the second piece 142 and the first piece 141 of the outer peripheral flange 14. This enhances the function of the guide when joining the first member 2 and the second member 3, thereby facilitating the joining of the first member 2 and the second member 3. Before the hook 23 of the first member 2 rides on the claw 33 of the second member 3, the outer peripheral flange 14 can be used to align the first member 2 and the second member 3.

[0121] Furthermore, the first member 2 may also have an outer peripheral flange. Even in this case, when the first member 2 and the second member 3 are joined, the first member 2 can be brought closer to the second member 3 so that the end of the second member follows the outer peripheral flange. This can enhance the function of the first member 2 as a guide when joining the first member 2 and the second member 3.

[0122] (3.6) Restriction

[0123] Figure 9 The restricting portion 37 shown in FIG. 1 is in contact with the connector 46 to thereby restrict the connector 46 relative to the substrate 42 (see FIG. 1 ). Figure 6 ) to restrict movement.

[0124] like Figure 9 As shown, the limiting portion 37 includes a protrusion 371. The protrusion 371 is formed of resin or the like. The protrusion 371 protrudes from a portion of the second main body portion 31 and faces the connector 46. More specifically, the protrusion 371 protrudes from a portion of the annular portion 312 of the second main body portion 31 along the first direction D1 and faces the connector 46 with a gap therebetween in the first direction D1. The protrusion 371 is, for example, formed integrally with the second main body portion 31 and made of resin. When a force (direction close to the protrusion 371) is applied to the connector 46 in the first direction D1, the protrusion 371 is clamped. Figure 9 When a force is applied to the connector 46 (in the downward direction), the connector 46 contacts the protrusion 371. If the connector 46 contacts the protrusion 371, it cannot move further downward. Thus, the downward movement of the connector 46 can be restricted.

[0125] (4) Structural elements of the motor unit

[0126] Hereinafter, each component of the motor unit 4 according to the first embodiment will be described with reference to the drawings.

[0127] (4.1) Motor

[0128] like Figure 6As shown, the motor 41 is housed in the motor housing 44. In the motor 41, the rotor 411 including the rotating shaft 413 extending along the axial direction (first direction D1) rotates with the axis of the rotating shaft 413 as the rotation center. That is, the motor 41 rotates with the first direction D1 as the axial direction. The motor 41 is, for example, Figure 6 The inner rotor type motor shown. The motor 41 and the blade 47 (refer to Figure 21 ) is directly or indirectly connected, and the blades 47 rotate in conjunction with the rotation of the motor 41. In addition, the motor 41 is not limited to an inner rotor type motor, and may also be an outer rotor type motor.

[0129] (4.2)Substrate

[0130] Figure 6 The illustrated substrate 42 is, for example, a printed circuit board. The substrate 42 is substantially circular when viewed from above along its thickness, and has a through-hole 421 in its center for the rotation shaft 413 to pass through. Furthermore, the substrate 42 has multiple (three in the illustrated example) mounting holes 422. The substrate 42 is housed in the motor housing 44, held by a substrate guide 43.

[0131] A plurality of circuit elements for driving the motor 41 are provided on the substrate 42. The plurality of circuit elements provided on the substrate 42 constitute a drive circuit 48 for driving the motor 41 (see FIG. Figure 21 The drive circuit 48 is electrically connected to the motor 41 via an electrical path such as a lead wire. The drive circuit 48 is electrically connected to the motor 41 via a connector 46 and a cable 53 (see Figure 21 ) and the self-control device 52 (refer to Figure 21 ) is supplied with electric power to generate driving power for driving the motor 41. The driving circuit 48 supplies the generated driving power to the motor 41. The motor 41 is driven and rotated by being supplied with driving power from the driving circuit 48.

[0132] (4.3) Substrate guide

[0133] like Figure 6As shown, the substrate guide 43 is formed into a circular ring with an opening 431 in the center, and the substrate 42 is arranged on one side of the surface in the first direction D1. The substrate guide 43 holds the substrate 42 between the base plate 45 and the substrate guide 43 in the first direction D1. Multiple (three in the illustrated example) protrusions 432 are formed on the outer periphery of the surface of the substrate guide 43 facing the substrate 42. Each protrusion 432 is cylindrical and protrudes in the first direction D1. Each protrusion 432 penetrates a circular mounting hole 422 formed in the substrate 42 and is thermally riveted. Thus, the substrate 42 is fixed to the substrate guide 43. Furthermore, the substrate guide 43 has multiple (three in the illustrated example) insertion holes 433 formed on the outer periphery of the opening 431. Each insertion hole 433 allows the wires connecting the motor 41 and the substrate 42 to pass through.

[0134] (4.4) Motor housing

[0135] like Figure 6 As shown, the motor housing 44 is formed so that one side ( Figure 6 The motor housing 44 is a metal member with a bottom and a cylindrical shape that is open (at the top). The motor housing 44 houses the motor 41. The motor housing 44 holds the substrate 42. The motor housing 44 holds the substrate 42 via the substrate guide 43.

[0136] The motor housing 44 has a bottom portion 441, a cylinder 442, an annular portion 443, a cylinder 444, and a front end portion 445. The bottom portion 441, the cylinder 442, the annular portion 443, the cylinder 444, and the front end portion 445 are formed integrally. The bottom portion 441 is, for example, in the shape of a circular plate. The cylinder 442 is provided so as to protrude from the outer peripheral edge of the bottom portion 441. The annular portion 443 is provided at the front end of the cylinder 442. The cylinder 444 is provided so as to protrude from the outer peripheral edge of the annular portion 443. The front end portion 445 is provided at the front end of the cylinder 444. The front end portion 445 has a plurality of (two in the example shown in the figure) through holes 446 and a plurality of (three in the example shown in the figure) through holes 447.

[0137] (4.5) Base plate

[0138] like Figure 6 As shown, the bottom plate 45 is formed so that one side in the first direction D1 ( Figure 6 A cylindrical metal component with a bottom that is open at the bottom.

[0139] The bottom plate 45 has a bottom portion 451, a cylinder portion 452 and a front end portion 453. The bottom portion 451, the cylinder portion 452 and the front end portion 453 are formed integrally. The bottom portion 451 is, for example, a circular plate. The cylinder portion 452 is provided protruding from the outer periphery of the bottom portion 451. The front end portion 453 is provided at the front end of the cylinder portion 452. The front end portion 453 has a plurality of (at Figure 6Only one through hole 454 and a plurality of (three in the illustrated example) through holes 455 are shown.

[0140] The bottom plate 45 is attached to the motor case 44 so as to cover the opening of the motor case 44. More specifically, screws are inserted into the through holes 446 of the motor case 44 and the through holes 454 of the bottom plate 45 to screw the motor case 44 and the bottom plate 45 together.

[0141] With the motor housing 44 and the bottom plate 45 fixed together, screws 49 are inserted into the through holes 447 of the motor housing 44, the through holes 455 of the bottom plate 45, and the through holes of the fan housing 1 (see FIG. Figure 9 ), thereby installing the motor housing 44 and the base plate 45 on the fan housing 1.

[0142] (4.6) Connectors

[0143] Figure 6 The connector 46 shown is used to connect the substrate 42 and the cable 53 (see Figure 21 The connector 46 is a plug-in type connector, and the plugging and unplugging direction of the connector 46 is along a direction perpendicular to the first direction D1.

[0144] like Figure 6 As shown, the connector 46 includes a housing portion 461 and a plurality of connection terminals (not shown) located inside the housing portion 461. The plurality of connection terminals are electrically connected to the substrate 42 and the cable 53. The plurality of connection terminals are made of metal such as brass.

[0145] Receptacle 461 is a resin molded product made of, for example, polybutylene terephthalate (PBT). It is integrally formed with substrate guide 43. Receptacle 461 is shaped like a square tube with a receiving hole 462. The opening of receiving hole 462 is rectangular. The connector for cable 53 is inserted into receiving hole 462. This electrically connects the multiple connection terminals to cable 53.

[0146] (4.7) Blades

[0147] Blade 47 (refer to Figure 21 )pass Figure 6 More specifically, the blades 47 are housed in the fan housing 1 (see FIG. 1 ) in a state of being directly or indirectly connected to the motor 41. Figure 9 For example, the blades 47 are attached to the portion of the rotating shaft 413 that protrudes from the motor housing 44. Within the fan housing 1, the blades 47 rotate in conjunction with the rotation of the motor 41. This improves the cooling effect.

[0148] (5) Effect

[0149] In the fan case 1 of the first embodiment, at least one of the one or more hooks 23 in the first member 2 extends from the end of the first opening 213 of the first main body 21 toward the second member 3 along the first direction D1. As a result, when viewed from above in the first direction D1, the amount of protrusion of the hook 23 and the claw 33 in a direction perpendicular to the first direction D1 can be reduced, thereby reducing the size of the fan case 1.

[0150] In the fan case 1 of the first embodiment, the first member 2 and the second member 3 are coupled to each other by hooking the plurality of hooks 23 onto corresponding claws 33 among the plurality of claws 33. This allows the fan case 1 to be miniaturized, and the first member 2 and the second member 3 to be more securely coupled by hooking the hooks 23 and the claws 33 at multiple locations.

[0151] In the fan case 1 of Embodiment 1, when viewed from above in the first direction D1, at least one of the outer surface 234 and the inner surface 235 of each of the one or more hooks 23 is aligned with the outer peripheral surface 215 of the first main body 21. This allows for a more compact fan case 1 and facilitates making the thickness of the hooks 23 relatively uniform. Furthermore, the outer surface 234 is aligned with the outer peripheral surface 215 of the first main body 21, thereby enhancing the aesthetic appearance of the fan case 1.

[0152] In fan case 1 of Embodiment 1, outer surface 234 of hook 23 is curved along outer peripheral surface 215 of first body portion 21 when viewed from above in first direction D1. This makes fan case 1 more compact and improves its appearance.

[0153] In the fan case 1 of Embodiment 1, a protrusion 251 is provided on the extension line of the hook 23 at the end 214 of the first opening 213 of the first main body 21. This allows the portion on the extension line of the hook 23 to be thicker than the circumferential ends of the first main body 21, thereby improving the resistance to the force acting on the first main body 21 when the hook 23 is bent.

[0154] In the fan case 1 of the first embodiment, in the first direction D1, a first distance L21 between the flange 24 and the first hook portion 236 of the hook 23 is shorter than a second distance L31 between the second opening 313 of the second body portion 31 and the second hook portion 334 of the claw 33. This enhances the function of the fan case 1 as a guide when coupling the first member 2 and the second member 3, thereby facilitating coupling of the first member 2 and the second member 3.

[0155] In the fan case 1 of the first embodiment, the first member 2 or the second member 3 has an outer peripheral flange 14 of the exhaust port 13. This enhances the guide function when joining the first member 2 and the second member 3. Therefore, the first member 2 and the second member 3 can be easily joined.

[0156] In fan case 1 of Embodiment 1, when viewed from the first direction D1, the tips of claws 33 are along outer peripheral surface 215 of first body portion 21. This allows for miniaturization of fan case 1 and improvement of its appearance.

[0157] In the fan case 1 of the first embodiment, the first body portion 21 has an outer peripheral surface 215 including a plurality of regions having different curvatures, and the plurality of hooks 23 are arranged along the outer peripheral surface 215 of the first body portion 21. This allows the fan case 1 to be miniaturized and its appearance to be improved.

[0158] (6) Modification

[0159] Hereinafter, a modification of the first embodiment will be described.

[0160] As a modification of the first embodiment, regarding the plurality of hooks 23 , the outer surfaces 234 of the hooks 23 may be flat.

[0161] As a variation of the first embodiment, the plurality of hooks 23 is not limited to extending along the first direction D1. Only a portion of the plurality of hooks 23 may extend along the first direction D1. In short, at least one of the plurality of hooks 23 may extend from the end 214 of the first opening 213 of the first main body 21 toward the second member 3 along the first direction D1.

[0162] As a variation of Embodiment 1, when viewed from above in the first direction D1, only one of the outer surface 234 and the inner surface 235 of the plurality of hooks 23 may lie along the outer circumferential surface 215 of the first main body 21. Specifically, the outer surface 234 of each hook 23 may lie along the outer circumferential surface 215 while the inner surface 235 is flat, or the outer surface 234 may be flat while the inner surface 235 lies along the outer circumferential surface 215. This variation also allows for further miniaturization of the fan case 1 and improves the aesthetic appearance of the fan case 1.

[0163] In the first embodiment, the motor housing 44 is made of metal, but the entire motor housing 44 is not limited to being made of metal. As a variation of the first embodiment, only a portion of the motor housing 44 may be made of metal. In short, it is preferable that the motor housing 44 include a metal portion.

[0164] For example, the motor housing 44 includes a resin member and a metal member. The motor housing 44 uses the resin member to hold the substrate 42. The resin member holds the substrate 42 directly or through a substrate guide 43. The metal member is provided around the resin member. Thus, in the motor housing 44, the resin member can hold the substrate 42, while the metal member can enhance the shielding effect.

[0165] The fan casing 1 and the motor unit 4 of the above-described modified example also produce the same effects as those of the fan casing 1 and the motor unit 4 of the first embodiment.

[0166] (Implementation Method 2)

[0167] Figure 10 : is a perspective view of the fan case 1a of the second embodiment. The fan case 1a of the second embodiment is different from the fan case 1 of the first embodiment (see Figure 1 ) is that the fan housing 1a has Figure 10 The multiple (in Figure 10 Only one hook 23a and multiple claws 33a are shown in the figure.

[0168] (1) Structure

[0169] like Figure 10 As shown, the fan case 1a of the second embodiment includes a first member 2a and a second member 3a. Components of the fan case 1a of the second embodiment that are identical to those of the fan case 1 of the first embodiment are denoted by the same reference numerals, and their descriptions are omitted.

[0170] Like the motor unit 4 of the first embodiment, the motor unit 4 of the second embodiment includes a fan case 1 a and is used in a mobile object such as a vehicle.

[0171] (2) Structural elements of the fan housing

[0172] (2.1) Component 1

[0173] like Figures 10 to 12 As shown, the first member 2 of embodiment 1 (see Figures 1 to 5 ) Similarly, the first member 2a has a first main body 21, a protruding portion 22, a plurality of ( Figure 10 (Only one is shown in the figure) hook 23a, multiple flanges 24a and multiple protrusions 252, 253. Figure 11 It is a top view of the fan case 1a1a in Embodiment 2. Figure 12 It is an exploded perspective view of the fan case according to the second embodiment.

[0174] (2.1.1) Hook

[0175] The plurality of hooks 23 of the first embodiment (see Figure 1 ) Similarly, when viewed from the first direction D1, Figure 10 and Figure 12 The plurality of hooks 23a shown are arranged at a plurality of locations on the outer periphery of the first main body 21. More specifically, the plurality of hooks 23a are arranged at the other end side ( Figure 12 The hooks 23a are arranged around the lower end side of the first main body 21 and are separated from each other along the circumferential direction of the side surface portion 211 of the first main body 21. That is, the plurality of hooks 23a are arranged in the circumferential direction of the side surface portion 211 at a distance greater than a certain distance.

[0176] The plurality of hooks 23a extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3a along the first direction D1. Figures 10 to 12 In the example, all of the plurality of hooks 23a extend from the end 214 of the first opening 213 of the first main body 21 toward the second member 3a along the first direction D1. Each hook 23a is provided at the other end ( Figure 12 Furthermore, each hook 23a extends from an end portion 214 of the side surface portion 211 of the first main body portion 21 toward the second member 3a side along the first direction D1.

[0177] Figure 13A 2 is a perspective view of the hook 23a of the first member 2a of the fan housing 1a according to the second embodiment. Figure 13A As shown, each hook 23a has a hook hole 237. The hook hole 237 is formed below the hook 23a. Furthermore, each hook 23a is plate-shaped, having an outer surface 234 and an inner surface 235 that face each other in the thickness direction of the hook 23a. The outer surface 234 and inner surface 235 of each hook 23a are flat. In other words, the outer surface 234 and inner surface 235 of each hook 23a do not have large protrusions or the like.

[0178] (2.1.2) Flange

[0179] like Figure 12 As shown, the plurality of flanges 24a are provided at the end 214 of the first opening 213 of the first main body 21. The plurality of flanges 24a are provided at the end 214 of the side surface 211 of the first main body 21, spaced apart from one another along the circumferential direction of the side surface 211. In other words, the plurality of flanges 24a are provided at intervals of a certain distance or more in the circumferential direction of the side surface 211.

[0180] Each flange 24a is provided in a portion of the side surface portion 211 where no hook 23a is provided. For example, a flange 24a is provided between two adjacent hooks 23a. In this case, the flange 24a is provided at the end 214 of the first opening 213 so that a gap 241 is formed between the flange 24a and the hook 23a in the circumferential direction of the first body portion 21.

[0181] Each flange 24a extends from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3a along the first direction D1. Figure 12 In the example of FIG, all of the plurality of flanges 24 a extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3 a side along the first direction D1.

[0182] The flanges 24a have substantially the same length in the first direction D1 circumferentially around the side surface 311 of the second body 31. The length of the flanges 24a in the first direction D1 is shorter than the length of the hook 23a in the first direction D1.

[0183] The flange 24 of the first embodiment (see Figure 4 Similarly, when the first member 2a and the second member 3a are joined, each flange 24a enters the groove 35 of the second member 3a. More specifically, each flange 24a enters the groove 35 before the first member 2a and the second member 3a are joined. This facilitates alignment of the first member 2a and the second member 3a, making it easier to join the first member 2a and the second member 3a. In other words, each flange 24a functions as a guide.

[0184] (2.2) Second component

[0185] Compared with the second member 3 of embodiment 1 (refer to Figure 4 and Figure 9 ) Similarly, if Figure 10 and Figure 12 As shown, the second member 3a includes a second main body 31, a protruding portion 32 and a plurality of ( Figure 10 (Only one claw 33a is shown in the figure).

[0186] (2.2.1) Claw

[0187] like Figure 12 As shown, the plurality of claws 33a correspond to the plurality of hooks 23a one-to-one. When viewed from the first direction D1, the plurality of claws 33a are arranged at a plurality of locations on the periphery of the second member 3a. The plurality of claws 33a are provided at the end portion ( Figure 12 More specifically, each claw 33a protrudes from the side surface portion 311 in a direction perpendicular to both the first direction D1 and the circumferential direction of the side surface portion 311.

[0188] The plurality of claws 33a are provided at intervals from each other around the end portion of the side surface portion 311 of the second main body portion 31. That is, the plurality of claws 33a are provided at intervals in the circumferential direction of the side surface portion 311.

[0189] Figure 13B3 is a perspective view of the claw 33a of the second member 3a of the fan housing 1a according to the second embodiment. Figure 13B As shown, each claw 33a has a shape such that its height increases as it moves away from the second opening 313 in the first direction D1. That is, each claw 33a has a triangular shape when viewed from the circumferential direction of the side surface 311 of the second main body 31.

[0190] (2.3) Combination of the first and second components

[0191] Figure 14A It is a perspective view of the hook 23a and the claw 33a when the first member 2a and the second member 3a are fitted together in the fan case 1a of the second embodiment. Figure 14B It is a front view of the hook 23a and the claw 33a when the first member 2a and the second member 3a are fitted together in the fan case 1a of the second embodiment. Figure 14C 1 is a side view of the hook 23a and the claw 33a when the first member 2a and the second member 3a are fitted together in the fan housing 1a of the second embodiment. Figure 10 、 Figures 14A to 14C As shown, the first member 2a and the second member 3a are coupled to each other by hooking the plurality of hooks 23a on corresponding claws 33a among the plurality of claws 33a.

[0192] The first member 2a and the second member 3a are separated from each other before being joined ( Figure 12 ). When the first member 2a is brought closer to the second member 3a from the above state, the hook 23a of the first member 2a contacts the claw 33a of the second member 3a. Specifically, the front end of the hook 23a contacts the claw 33a. When the first member 2a is further brought closer to the second member 3a, the hook 23a is bent outward by the claw 33a. The protrusion of the claw 33a increases as it moves away from the second opening 313, so the deflection of the hook 23a becomes greater. When the first member 2a is brought closer to the second member 3a, the front end of the hook 23a passes over the claw 33a. At this time, the claw 33a is located in the hook hole 237 of the hook 23a. The hook 23a returns to its original state from the outwardly bent state. Through the above-mentioned process, the first member 2a and the second member 3a are connected.

[0193] As mentioned above, Figure 14C As shown, each hook 23a extends from the end 214 of the first opening 213 of the first main body 21 toward the second member 3a along the first direction D1. In other words, the bulging of each hook 23a toward the outside of the first main body 21 (outside in a direction perpendicular to the first direction D1) is reduced. Each hook 23a does not protrude toward the outside of the first main body 21 ( Figure 14C ) protrudes from the left side, but extends toward the lower side.

[0194] According to the above content, if Figure 14CAs shown, the protrusion amount of the hook 23a and the claw 33a can be made ( Figure 14C The amount of protrusion in the left and right directions) becomes smaller. Figure 11 As shown in FIG. 1 , the outer diameter L12 of the fan casing 1a can be shortened when viewed from the first direction D1. That is, the fan casing 1a can be made compact.

[0195] As in the first embodiment, since all of the plurality of hooks 23 a are coupled to all of the plurality of claws 33 a , the fan case 1 a can be downsized and the first member 2 a and the second member 3 a can be coupled more firmly.

[0196] Furthermore, when viewed from above in the first direction D1, the hook 23a and the claw 33a are located inward of the outermost portion of the first main body 21. In the first main body 21, the portion where the hook 23a is provided is located inward of the outermost portion of the portion other than the portion where the hook 23a is provided. This allows the fan case 1a to be made more compact.

[0197] (2.4) Outer flange of exhaust port

[0198] like Figure 10 and Figure 12 As shown, fan housing 1a includes an outer peripheral flange 14a of exhaust port 13 for exhaust. More specifically, in fan housing 1a of Embodiment 2, first member 2a includes a portion of outer peripheral flange 14a. Second member 3a includes the remaining portion of outer peripheral flange 14a. Exhaust port 13 has an opening surface whose normal is a direction perpendicular to first direction D1.

[0199] The outer peripheral flange 14a is frame-shaped and includes two first pieces 144, two second pieces 145, a third piece 146, and a fourth piece 147. In the second embodiment, the third piece 146 is integrally formed with the two first pieces 144. The fourth piece 147 is integrally formed with the two second pieces 145.

[0200] The two first pieces 144 face each other in a direction perpendicular to both the first direction D1 and the normal to the opening surface of the exhaust port 13. Each first piece 144 is a rectangular plate with its longitudinal side oriented in the first direction D1. The third piece 146 is a rectangular plate with its longitudinal side oriented in a direction perpendicular to both the first direction D1 and the normal to the opening surface of the exhaust port 13. The third piece 146 connects the two first pieces 144.

[0201] The two second pieces 145 face each other in a direction perpendicular to both the first direction D1 and the normal to the opening surface of the exhaust port 13. Each second piece 145 is a rectangular plate with its longitudinal direction in the first direction D1. The fourth piece 147 is located below the third piece 146 and is a rectangular plate with its longitudinal direction perpendicular to both the first direction D1 and the normal to the opening surface of the exhaust port 13. The fourth piece 147 connects the two second pieces 145.

[0202] When the first member 2a and the second member 3a are coupled together, the third piece 146 and the two first pieces 144 of the first member 2a and the fourth piece 147 and the two second pieces 145 of the second member 3a are combined into one to form the outer peripheral flange 14a.

[0203] (3) Effect

[0204] In the fan case 1a of Embodiment 2, the outer surface 234 of the hook 23a is flat. This makes it possible to easily form the hook 23a.

[0205] In the fan case 1a of Embodiment 2, a flange 24a is provided at the end 214 of the first opening 213 of the first main body 21, creating a gap 241 between the flange 24a and the hook 23a in the circumferential direction of the first main body 21. This facilitates the connection of the first member 2a and the second member 3a. Furthermore, since the flange 24a is provided separately from the hook 23a, the stress generated by the deflection of the hook 23a is less likely to be transmitted to the flange 24a.

[0206] In the fan case 1a of the second embodiment, when viewed from the first direction D1, the hook 23a and the claw 33a are located inside the outermost portion of the first main body 21. This allows the fan case 1a to be further reduced in size.

[0207] (4) Modification

[0208] As a variation of the second embodiment, the plurality of hooks 23a is not limited to extending along the first direction D1. It is sufficient for a portion of the plurality of hooks 23a to extend along the first direction D1. In short, at least one of the plurality of hooks 23a can extend from the end 214 of the first opening 213 of the first main body 21 toward the second member 3a along the first direction D1.

[0209] As a modification of the second embodiment, when viewed from the first direction D1, outer surfaces 234 of the hooks 23a may be arranged along the outer peripheral surface 215 of the first body portion 21. This can further reduce the size and improve the appearance.

[0210] The modified example of the first embodiment may be applied to the fan case 1 a of the second embodiment.

[0211] The fan casing 1 a according to the above-described modification also produces the same effects as those of the fan casing 1 a according to the second embodiment.

[0212] (Implementation 3)

[0213] Figure 15 3 is a perspective view of the fan housing of embodiment 3. Figure 15 As shown, the fan housing 1b is different from the fan housing 1 of the first embodiment (see Figure 1 ) is that the fan housing 1b has a plurality of hooks 23b and a plurality of claws 33b.

[0214] (1) Fan housing

[0215] like Figure 15 As shown, the fan case 1b includes a first member 2b and a second member 3b. Regarding the fan case 1b, the same components as those of the fan case 1 according to the first embodiment are denoted by the same reference numerals, and their descriptions are omitted.

[0216] Like the motor unit 4 of the first embodiment, the motor unit 4 including the fan case 1 b is used in a mobile object such as a vehicle.

[0217] (2) Structural elements of the fan housing

[0218] (2.1) Component 1

[0219] Figure 16 It is a plan view of the fan case 1b in Embodiment 3. Figure 17 It is an exploded perspective view of the fan case 1b according to the third embodiment. Figure 18 : is a perspective view of the first member 2b of the fan housing 1b of the third embodiment. Figures 15 to 18 As shown, the first member 2b has a first main body 21, a protruding portion 22, a plurality of ( Figure 15 (Only three are shown in the figure) hook 23b, multiple flanges 24b and multiple protrusions 251~255.

[0220] (2.1.1) Hook

[0221] The plurality of hooks 23 of the first embodiment (see Figure 1 ) Similarly, when viewed from the first direction D1, Figures 15 to 18 The plurality of hooks 23b shown are arranged at a plurality of locations on the outer periphery of the first main body 21. More specifically, the plurality of hooks 23b are arranged at the other end side ( Figure 17The hooks 23b are arranged around the lower end side of the first main body 21 and are separated from each other along the circumferential direction of the side surface portion 211 of the first main body 21. That is, the plurality of hooks 23b are arranged at a distance greater than a certain distance in the circumferential direction of the side surface portion 211.

[0222] The plurality of hooks 23b extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3b along the first direction D1. Figures 15 to 18 In the example, all of the plurality of hooks 23b extend from the end portion 214 of the first opening 213 of the first main body portion 21 toward the second member 3b along the first direction D1. Each hook 23b is provided at the other end ( Figure 17 Each hook 23b extends from an end portion 214 of the side surface portion 211 of the first main body portion 21 toward the second member 3b side along the first direction D1.

[0223] Figure 19A 3. This is a perspective view of the hook 23b of the first member 2b of the fan housing 1b of the third embodiment. Figure 7A ) Similarly, if Figure 19A As shown, each hook 23b is in the shape of a letter U when viewed from the front of the hook 23b, and has two first pieces 231 and a second piece 232. The two first pieces 231 are rectangular plates with the first direction D1 as the longitudinal direction, and extend from the end 214 of the side portion 211 of the first main body 21 along the first direction D1. The second piece 232 is a rectangular plate with the direction perpendicular to the first direction D1 as the longitudinal direction, so that the front ends ( Figure 19A Each hook 23b has a hook hole 233 surrounded by the second piece 232 and the two first pieces 231.

[0224] Furthermore, each hook 23b has two protrusions 238. The protrusions 238 are provided on the first piece 231 and extend along the first direction D1. A portion (upper end) of each protrusion 238 is located above the first piece 231 and is connected to the side surface 211 of the first body 21. Thus, even when stress is generated by bending of the hook 23b, the protrusions 238 can reinforce the hook 23b.

[0225] In addition, the plurality of hooks 23 b are plate-shaped and have an outer surface 234 and an inner surface 235 that are opposed to each other in the thickness direction of the hooks 23 b.

[0226] (2.2) Second component

[0227] like Figure 15 and Figure 17 As shown, the second member 3b includes a second main body 31, a protruding portion 32 and a plurality of ( Figure 15In the example shown, only two claws 33b are shown.

[0228] (2.2.1) Claw

[0229] like Figure 17 As shown, the plurality of claws 33b correspond to the plurality of hooks 23b one by one. When viewed from the first direction D1, the plurality of claws 33b are arranged at a plurality of locations on the periphery of the second member 3b. The plurality of claws 33b are provided at the end portion ( Figure 17 More specifically, each claw 33b protrudes from the side surface portion 311 in a direction perpendicular to both the first direction D1 and the circumferential direction of the side surface portion 311.

[0230] The plurality of claws 33b are provided at intervals from each other around the other end of the side surface portion 311 of the second main body portion 31. That is, the plurality of claws 33b are provided at intervals in the circumferential direction of the side surface portion 311.

[0231] Figure 19B 3 is a perspective view of the claw 33b of the second member 3b of the fan housing 1b of the third embodiment. Figure 19B As shown, each claw 33b includes two first pieces 335, a second piece 336, and a third piece 337. The two first pieces 335 are plate-shaped, with their longitudinal sides oriented in the first direction D1, and protrude from the side surface 311 of the second main body 31. The second piece 336 is plate-shaped, with its longitudinal sides oriented along the circumferential direction of the side surface 311 of the second main body 31, and protrudes from the side surface 311. The third piece 337 is plate-shaped, with its longitudinal sides oriented along the circumferential direction of the side surface 311, and protrudes from the side surface 311 of the second main body 31. The protrusion of the third piece 337 is less than that of the second piece 336. The two first pieces 335, the second piece 336, and the third piece 337 are integrally formed. Each claw 33b has a recessed portion 338 surrounded by the two first pieces 335, the second piece 336, and the third piece 337.

[0232] (2.3) Combination of the first and second components

[0233] Figure 20A It is a perspective view of the hook 23b and the claw 33b when the first member 2b and the second member 3b are fitted together in the fan case 1b of the third embodiment. Figure 20B It is a front view of the hook 23b and the claw 33b when the first member 2b and the second member 3b are fitted together in the fan case 1b of the third embodiment. Figure 20C 1 is a side view of the hook 23b and the claw 33b when the first member 2b and the second member 3b are fitted together in the fan housing 1b of the third embodiment. Figure 15 、 Figures 20A to 20CAs shown, the first member 2b and the second member 3b are coupled to each other by hooking the plurality of hooks 23b onto corresponding claws 33b among the plurality of claws 33b.

[0234] The first member 2b and the second member 3b are separated from each other before being joined ( Figure 17 (see state shown). When the first member 2b is brought closer to the second member 3b from the above state, the hook 23b of the first member 2b contacts the claw 33b of the second member 3b. Specifically, the second piece 232 of the hook 23b contacts the claw 33b. As the first member 2b is further brought closer to the second member 3b, the hook 23b is bent outward by the claw 33b. The protrusion of the claw 33b increases as it moves away from the second opening 313, and therefore the deflection of the first piece 231 of the hook 23b becomes greater. When the first member 2b is brought closer to the second member 3b, the second piece 232 of the hook 23b passes over the claw 33b. At this time, the claw 33b is located in the hook hole 233 of the hook 23b. The hook 23b returns to its original state from the outwardly bent state. Through the above-described process, the first member 2b and the second member 3b are connected.

[0235] (3) Modification

[0236] As a variation of the third embodiment, the plurality of hooks 23b is not limited to extending along the first direction D1. It is sufficient that a portion of the plurality of hooks 23b extends along the first direction D1. In short, at least one of the plurality of hooks 23b may extend from the end 214 of the first opening 213 of the first main body 21 toward the second member 3b along the first direction D1.

[0237] As a modification of the third embodiment, when viewed from the first direction D1, outer surfaces 234 of the hooks 23b may be arranged along the outer peripheral surface 215 of the first body portion 21. This further reduces the size and improves the appearance.

[0238] The modified example of the first embodiment may be applied to the fan casing 1b of the third embodiment.

[0239] The fan casing 1b of the above-described modified example also produces the same effects as those of the fan casing 1b of the third embodiment.

[0240] Furthermore, the hooks 23, 23a, 23b may be trapezoidal or semicircular in shape. Specifically, the hooks 23, 23a, 23b may be wider on the first member 2, 2a, 2b side than on the second member 3, 3a, 3b side.

[0241] (Implementation 4)

[0242] In the fourth embodiment, a vehicle 5 (mobile object) including the motor unit 4 of the first embodiment will be described with reference to the drawings.

[0243] (1) Structure

[0244] Figure 21 Schematic diagram of vehicle 5 according to embodiment 4. Figure 21 As shown, the vehicle 5 includes a motor unit 4, a battery 51, a control device 52, a cable 53, and a vehicle body 54 (mobile body). Figure 1 ) The same structural elements are marked with the same figure marks and the description is omitted.

[0245] exist Figure 21 In the illustrated example, the vehicle 5 is a four-wheel hybrid vehicle having an engine and a driving battery 51 mounted on a vehicle body 54. The vehicle 5 is not limited to a hybrid vehicle, but may also be an electric vehicle.

[0246] The battery 51 is composed of, for example, a lithium-ion battery, a nickel-metal hydride battery, etc. The battery 51 supplies electric power to the motor 41 , a drive motor for driving the vehicle 5 , and the like.

[0247] The control device 52 is electrically connected to the motor unit 4 via a cable 53 and controls the motor unit 4. More specifically, the control device 52 is electrically connected to the motor unit 4 via the cable 53 via the connector 46 (see Figure 6 ) is electrically connected to the drive circuit 48. The control device 52 controls the battery 51. More specifically, the control device 52 controls the power supply from the battery 51 to the motor 41 and the drive motor.

[0248] The motor unit 4 , a battery 51 , a control device 52 , and a cable 53 are mounted on the vehicle body 54 .

[0249] The motor unit 4 used in the vehicle 5 functions as a cooling fan system to suppress a temperature rise in the battery 51. In the motor unit 4, by rotating the motor 41, the blades 47 rotate, blowing air toward the battery 51. This air cools the battery 51, suppressing a temperature rise in the battery 51.

[0250] (2) Modification

[0251] As a modification of the fourth embodiment, the vehicle 5 may include the motor unit 4 of the second embodiment or the motor unit 4 of the third embodiment instead of the motor unit 4 of the first embodiment.

[0252] As another modified example of the embodiment, the mobile object including the motor unit 4 is not limited to the vehicle 5 and may be a mobile object other than the vehicle 5. In the case of the motor unit 4 of the second embodiment or the motor unit 4 of the third embodiment, as in the case of the motor unit 4 of the first embodiment, the mobile object is not limited to the vehicle 5 and may be a mobile object other than the vehicle 5.

[0253] The vehicles 5 and mobile bodies of the above-described modifications also produce the same effects as those of the vehicle 5 of the fourth embodiment.

[0254] The embodiments and modifications described above are merely a portion of various embodiments and modifications of the present disclosure. The embodiments and modifications can be modified in various ways, such as by design, as long as the objectives of the present disclosure can be achieved.

[0255] (Way)

[0256] The following aspects are disclosed in this specification.

[0257] A fan housing (1, 1a) of the first embodiment houses a motor (41). In the motor (41), a rotor (411) including a rotating shaft (413) extending along a first direction (D1) rotates with the axis of the rotating shaft (413) as the center of rotation. The fan housing (1, 1a) includes a first component (2, 2a) and a second component (3, 3a). The first component (2, 2a) and the second component (3, 3a) are coupled to each other along the first direction (D1). The first component (2, 2a) includes a first main body (21) and one or more hooks (23, 23a). The first main body (21) includes a first opening (213) that opens toward the second component (3, 3a). When viewed from above in the first direction (D1), one or more hooks (23, 23a) are arranged on the outer periphery of the first main body (21). The second member (3, 3a) has a second main body (31) and one or more claws (33, 33a). The second main body (31) has a second opening (313) that opens toward the first member (2, 2a). When viewed from above from the first direction (D1), the one or more claws (33, 33a) are arranged on the outer periphery of the second main body (31) at positions corresponding to the one or more hooks (23, 23a) for hooking by the one or more hooks (23, 23a). At least one of the one or more hooks (23, 23a) extends from an end (214) of the first opening (213) of the first main body (21) toward the second member (3, 3a) along the first direction (D1).

[0258] According to the fan casing (1, 1a) of the first embodiment, when viewed from above in the first direction (D1), the protrusion amount of the hook (23, 23a) and the claw (33, 33a) in the direction perpendicular to the first direction (D1) can be reduced. Therefore, the fan casing (1, 1a) can be made small.

[0259] The fan casing (1, 1a) of the second embodiment is based on the first embodiment, wherein the one or more hooks are multiple hooks (23, 23a), and the one or more claws are multiple claws (33, 33a). The first member (2, 2a) and the second member (3, 3a) are connected to each other by hooking the multiple hooks (23, 23a) on the multiple claws (33, 33a).

[0260] According to the fan casing (1, 1a) of the second embodiment, the fan casing (1, 1a) can be miniaturized, and the first component (2, 2a) and the second component (3, 3a) can be more firmly connected by hooking the hooks (23, 23a) and claws (33, 33a) at multiple locations.

[0261] For the fan casing (1, 1a) of the third embodiment, based on the first embodiment or the second embodiment, when viewed from above from the first direction (D1), at least one of the outer surface (234) and the inner surface (235) of each hook (23, 23a) of more than one hook (23, 23a) is along the outer peripheral surface (215) of the first main body (21).

[0262] According to the fan casing (1, 1a) of the third embodiment, the fan casing (1) can be miniaturized and the thickness of the hook (23) can be easily made relatively uniform.

[0263] In the fourth embodiment of the fan casing (1), based on the third embodiment, the outer surface (234) of the hook (23) is curved along the outer peripheral surface (215) of the first main body (21) when viewed from above in the first direction (D1).

[0264] According to the fan casing (1, 1a) of the fourth embodiment, the fan casing (1) can be made smaller and the appearance of the fan casing (1) can be improved.

[0265] The fan casing (1a) of the fifth embodiment is the fan casing (1a) according to any one of the first to third embodiments, wherein the outer surface of the hook (23a) is flat.

[0266] According to the fan casing (1a) of the fifth embodiment, the hook (23a) can be easily formed.

[0267] A sixth embodiment of the fan casing (1, 1a) is characterized in that, in addition to any one of the first to fifth embodiments, the first member (2, 2a) has a flange (24, 24a). The flange (24, 24a) is provided at an end (214) of a first opening (213) provided in the first main body (21). The flange (24, 24a) is provided at the end (214) of the first opening (213) so as to generate a gap (241) between the flange (24, 24a) and the hook (23, 23a) in the circumferential direction of the first main body (21).

[0268] According to the fan case (1, 1a) of the sixth embodiment, the first member (2, 2a) and the second member (3, 3a) can be easily connected. Since the flange (24, 24a) and the hook (23, 23a) are provided separately, the stress generated by the deflection of the hook (23, 23a) is not easily transmitted to the flange (24, 24a).

[0269] The fan housing (1) of the seventh embodiment is characterized in that, in addition to any one of the first to sixth embodiments, the first member (2) has a protrusion (251). The protrusion (251) is provided on an extension line of the hook (23) in the first main body (21) in the first direction (D1).

[0270] According to the fan casing (1) of the seventh embodiment, the portion on the extension line of the hook (23) can be made thicker than the circumferential ends of the first main body (21), thereby being strengthened relative to the force acting on the first main body (21) when the hook (23) is bent.

[0271] For the fan casing (1, 1a) of the eighth embodiment, based on the sixth embodiment, in the first direction (D1), a first distance (L21) between the flange (24, 24a) and the first hook portion (236) in the hook (23, 23a) for hooking with the claw (33, 33a) is shorter than a second distance (L31) between the second opening (313) of the second main body (31) and the second hook portion (334) in the claw (33, 33a) for hooking with the hook (23, 23a).

[0272] According to the fan casing (1, 1a) of the eighth embodiment, the function as a guide when combining the first component (2, 2a) and the second component (3, 3a) can be improved, so the first component (2, 2a) and the second component (3, 3a) can be easily combined.

[0273] In the fan casing (1) of the ninth embodiment, in addition to any one of the first to eighth embodiments, the first member (2) or the second member (3) has an outer peripheral flange (14) of the exhaust port (13).

[0274] According to the fan casing (1) of the ninth embodiment, the function as a guide when the first member (2) and the second member (3) are connected can be improved. Therefore, the first member (2) and the second member (3) can be easily connected.

[0275] In the fan casing (1, 1a) of the tenth embodiment, based on any one of the first to eighth embodiments, the front end of the claw (33, 33a) is along the outer peripheral surface (215) of the first main body (21) when viewed from above in the first direction (D1).

[0276] According to the fan casing (1, 1a) of the tenth embodiment, the fan casing (1, 1a) can be miniaturized and the appearance of the fan casing (1, 1a) can be improved.

[0277] The fan casing (1, 1a) of the eleventh embodiment is based on any one of the first to tenth embodiments, wherein the first main body (21) has an outer peripheral surface (215) including a plurality of regions having different curvatures, and the plurality of hooks (23, 23a) are arranged along the outer peripheral surface (215).

[0278] According to the fan casing (1, 1a) of the eleventh embodiment, the fan casing (1, 1a) can be miniaturized and the appearance of the fan casing (1, 1a) can be improved.

[0279] For the fan casing (1a) of the 12th mode, based on any one of the 1st to 11th modes, when viewed from above from the first direction (D1), one or more hooks (23a) and one or more claws (33a) are located at a position closer to the inside than the outermost part of the first main body (21).

[0280] According to the fan casing (1a) of the twelfth aspect, the fan casing (1, 1a) can be made more compact.

[0281] A motor unit (4) according to a thirteenth embodiment includes a motor (41) and a fan casing (1, 1a) according to any one of the first to twelfth embodiments.

[0282] According to the motor unit (4) of the 13th embodiment, in the fan casing (1, 1a), when viewed from above from the first direction (D1), the protrusion amount of the hook (23, 23a) and the claw (33, 33a) in the direction orthogonal to the first direction (D1) can be reduced, thereby making the fan casing (1, 1a) smaller.

[0283] The mobile body (vehicle 5) of the fourteenth embodiment includes a mobile body main body (vehicle body 54) and the motor unit (4) of the thirteenth embodiment. The motor unit (4) is mounted on the mobile body main body.

[0284] According to the mobile body (vehicle 5) of the fourteenth embodiment, in the fan casing (1, 1a), when viewed from above from the first direction (D1), the protrusion amount of the hook (23, 23a) and the claw (33, 33a) in the direction orthogonal to the first direction (D1) can be reduced, thereby making the fan casing (1, 1a) smaller.

[0285] Description of Reference Numerals

[0286] 1. 1a. 1b. Fan housing; 11. 12. 431. Opening; 13. Exhaust port; 14. 14a. Peripheral flange; 141. 144. 231. 331. 335. First piece; 142. 145. 232. 332. 336. Second piece; 143. 146. 337. Third piece; 147. Fourth piece; 2. 2a. 2b. First member; 21. First main body; 211. Side portion; 212. 312. 443. Annular portion; 213. First opening; 214. End portion; 215. Peripheral surface; 22. Protrusion; 23. 23a. 23b. Hook; 233. 237. Hook hole; 234. Outer surface; 235. Inner surface; 236. First hook portion; 238. Protrusion 2. Part; 24, 24a, flange; 241, gap; 251, 252, 253, 254, 255, 361, 362, 363, 371, 432, protrusion; 27, end; 3, 3a, 3b, second member; 31, second main body; 311, side portion; 313, second opening; 32, 34, protrusion; 33, 33a, 33b, claw; 35, groove; 37, restriction portion; 333, 338, recess; 334, second hook; 4, motor unit; 41, motor; 411, rotor; 413, rotating shaft; 5, vehicle (mobile body); 54, vehicle body (mobile body); L11, L12, length; L21, first distance; L31, second distance; D1, first direction.

Claims

1. A fan housing for housing a motor, wherein a rotor including a rotating shaft extending in a first direction rotates about an axis of the rotating shaft, wherein: The fan housing includes a first member and a second member coupled to each other along the first direction. The first member comprises: a first main body having a first opening that opens toward the second member; and a plurality of hooks, which are arranged on the outer periphery of the first main body when viewed from above in the first direction, The second member comprises: a second main body portion having a second opening opening toward the first member; as well as a plurality of claws, which are arranged on the outer periphery of the second main body at positions corresponding to the plurality of hooks when viewed from above in the first direction, so as to be hooked by the plurality of hooks; At least one of the plurality of hooks extends from an end portion of the first opening of the first main body portion toward the second member along the first direction. The first member has a plurality of flanges provided at the end portion of the first opening of the first main body. The plurality of flanges extend from the side surface of the first member toward the second member, respectively. The plurality of flanges are respectively provided at ends of the first side surface of the first main body portion and are separated from each other along the circumferential direction. The plurality of flanges are respectively arranged between two adjacent hooks, The flanges each have a shape in which the width in the circumferential direction of the first side surface becomes narrower as it moves away from the end portion of the first side surface. The second side surface of the second member is provided with a plurality of protrusions extending outward from the second side surface, and a groove is formed by the protrusions and the second side surface. The flange is inserted into the groove.

2. The fan housing according to claim 1, wherein: The first member and the second member are coupled to each other by hooking the plurality of hooks onto the plurality of claws, respectively.

3. The fan housing according to claim 1 or 2, wherein: At least one of an outer surface and an inner surface of each of the plurality of hooks is along the outer peripheral surface of the first main body portion when viewed in plan from the first direction.

4. The fan housing according to claim 3, wherein: The outer surface of each of the hooks is curved along the outer peripheral surface of the first main body portion when viewed in plan from the first direction.

5. The fan housing according to claim 1 or 2, wherein: The outer surface of each of the hooks is flat.

6. The fan housing according to claim 1 or 2, wherein: The flange is provided at the end portion of the first opening so as to create a gap between the flange and the hook in the circumferential direction of the first main body portion.

7. The fan housing according to claim 1 or 2, wherein: The first member has a protrusion provided on an extension line of the hook in the first body portion in the first direction.

8. The fan housing according to claim 6, wherein: In the first direction, a first distance between the flange and a first hooking portion of the hook on which the claw is hooked is shorter than a second distance between the second opening of the second body and a second hooking portion of the claw on which the hook is hooked.

9. The fan housing according to claim 1 or 2, wherein: The first member or the second member has an outer peripheral flange of the exhaust port.

10. The fan housing according to claim 1 or 2, wherein: The tip of the claw is along the outer peripheral surface of the first main body when viewed in plan from the first direction.

11. The fan housing according to claim 1 or 2, wherein: The first main body has an outer peripheral surface including a plurality of regions having mutually different curvatures, and the plurality of hooks are arranged along the outer peripheral surface.

12. The fan housing according to claim 1 or 2, wherein: The plurality of hooks and the plurality of claws are located inside an outermost portion of the first main body when viewed in plan from the first direction.

13. A motor unit, wherein: The motor unit includes the fan case according to any one of claims 1 to 12 and the motor.

14. A mobile object, wherein: The movable body includes the motor unit according to claim 13 and a movable body main body on which the motor unit is mounted.

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