Blower and hairdressing equipment

Abstract

To provide a blower capable of cooling a stator while suppressing reduction of an air-blowing amount.SOLUTION: A housing of a blower has a cylindrical part extending in an axial direction to surround a rotor and a stator. The cylindrical part has a first opening extending to one side in the axial direction from the other end in the axial direction. A lid part widening inward in a radial direction from one end in the axial direction of the cylindrical part, has a second opening. A bottom widening inward in a radial direction from the other end in the axial direction of the cylindrical part, has a third opening extending inward in the radial direction from an outer end in the radial direction to be connected to the first opening. The third opening faces a flat plate part of a spacer disposed at the other part in the axial direction of the bottom.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a blower device and a hair and beauty device.

Background Art

[0002] Conventionally, devices having a blowing function such as a hair dryer are known. For example, the fan of a hair dryer has a cylindrical base having a lid at the rear end, and blades are formed on the outer peripheral wall. The motor that drives the fan has a rotor in which a magnet ring is fixed inside the base of the fan, and a stator in which a coil is wound around a core and disposed radially inward of the rotor. A holder is housed and fixed inside the front end of the base. (For example, Japanese Patent Laid-Open No. 2001-178528)

[0003] When the output of the blower device is increased, the amount of heat generated by the motor (especially the stator) increases. Such heat generation can be eliminated by introducing a part of the air sent out from the fan into the motor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when air is introduced into the motor, the air volume of the blower device decreases.

[0006] An object of the present invention is to cool the stator while suppressing a decrease in the air volume.

Means for Solving the Problems

[0007] An exemplary blower of the present invention comprises a rotor, a stator, an impeller, a housing, and a spacer. The rotor has a shaft, which is rotatable about a central axis extending in the axial direction. The stator is radially opposite to the rotor. The impeller is rotatable with the shaft. The housing houses the rotor, the stator, and the impeller. The spacer is attached to the housing. The impeller has a hub and rotor blades. The hub is positioned at one axial end of the shaft and extends radially outward from the shaft. The rotor blades extend radially outward from the radially outer end of the hub. Then, air is sent out in the other axial direction. The housing comprises a cylindrical portion, a lid portion, a bottom portion, and an outer housing portion. The cylindrical portion extends axially and surrounds the rotor and the stator. The lid portion extends radially inward from one axial end of the cylindrical portion. The bottom portion extends radially inward from the other axial end of the cylindrical portion. The outer housing portion is cylindrical in shape and extends axially, surrounding the impeller and the cylindrical portion. One axial end of the cylindrical portion is positioned axially to the other of the hub and at the same radial position as the radially outer end of the hub, or radially inward from the radially outer end of the hub. The cylindrical portion has a first opening that extends axially from the other axial end of the cylindrical portion and penetrates the cylindrical portion radially. The lid portion has a second opening that penetrates the lid portion axially. The bottom portion has a third opening that penetrates the bottom portion axially. The spacer has a flat plate portion that is positioned axially to the other axial end of the bottom portion and extends radially. The third opening extends radially inward from the radially outer end of the bottom and connects to the first opening, and faces the flat plate portion.

[0008] An exemplary hairdressing and beauty apparatus of the present invention includes the above-described air blower. [Effects of the Invention]

[0009] According to exemplary blowers and hairdressing / beauty devices of the present invention, it is possible to cool the stator while suppressing a decrease in the amount of air blown. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a cross-sectional view showing an example of the configuration of a blower according to this embodiment. [Figure 2] Figure 2 is a perspective view of the blower on the other axial side. [Figure 3] Figure 3 is a plan view of the blower device, viewed from one axial direction towards the other. [Figure 4] Figure 4 shows the stator vane viewed from the radially inward to the radially outward direction. [Figure 5A] Figure 5A is a perspective view showing an example of the configuration of one side of the spacer in the axial direction. [Figure 5B] Figure 5B is a perspective view showing an example of the configuration on the other axial side of the spacer. [Figure 6] Figure 6 is a schematic diagram showing an example of the configuration of a hairdressing and beauty salon equipment equipped with a blower. [Modes for carrying out the invention]

[0011] An exemplary embodiment will be described below with reference to the drawings.

[0012] In this specification, in the blower 100, the direction parallel to the central axis CA is referred to as the "axial direction." Of the axial directions, the direction from the spacer 6 (described later) to the impeller 3 is referred to as "one axial direction Da1," and the direction from the impeller 3 to the spacer 6 is referred to as "the other axial direction Da2." Furthermore, the direction perpendicular to the central axis CA is referred to as the "radial direction," and the direction of rotation around the central axis CA is referred to as the "circumferential direction." Of the radial directions, the direction approaching the central axis CA is referred to as the "radial inward direction," and the direction moving away from the central axis CA is referred to as the "radial outward direction."

[0013] Furthermore, in this specification, "ring" includes not only shapes that are continuous and uninterrupted across the entire circumferential region centered on the central axis CA, but also shapes that have one or more breaks in a part of the entire region centered on the central axis CA. It also includes shapes that form a closed curve on a curved surface intersecting the central axis CA.

[0014] In the positional relationship between any one of the orientation, line, and plane and any other one, "parallel" includes not only the state where the two do not intersect at all no matter how far they extend, but also the state where they are substantially parallel. Also, "perpendicular" and "orthogonal" each include not only the state where the two intersect at 90 degrees to each other, but also the state where they are substantially perpendicular and the state where they are substantially orthogonal. That is, "parallel", "perpendicular", and "orthogonal" each include the state where there is an angular deviation within the extent that does not deviate from the gist of the present invention in the positional relationship between the two.

[0015] These are merely names used for explanation purposes and are not intended to limit the actual positional relationship, direction, and name, etc.

[0016] <1. Embodiment> FIG. 1 is a cross-sectional view showing a configuration example of the blower device 100 according to the present embodiment. FIG. 2 is a perspective view of the blower device 100 on the other side Da2 in the axial direction. FIG. 3 is a plan view of the blower device 100 viewed from one side Da1 to the other side Da2 in the axial direction. In FIG. 3, the illustration of the impeller 3 is omitted so that the configuration of one end portion of the housing 4 in the axial direction can be understood.

[0017] The blower device 100 includes a rotor 1, a stator 2, an impeller 3, a housing 4, a substrate 5, and a spacer 6. The rotor 1 and the stator 2 constitute the motor part of the blower device 100.

[0018] <1-1. Rotor 1> The rotor 1 is rotatable about a central axis CA extending in the axial direction. The rotor 1 includes a shaft 11 and a magnet 12.

[0019] The shaft 11 has a cylindrical shape and extends in the axial direction along the central axis CA. The shaft 11 is rotatable about the central axis CA extending in the axial direction. As described above, the blower device 100 includes the rotor 1. The rotor 1 has the shaft 11.

[0020] The magnet 12 is positioned on the radially outer surface of the shaft 11. In the magnet 12, opposing magnetic poles (N pole and S pole) are arranged alternately in the circumferential direction. The magnet 12 may be an annular structure surrounding the central axis CA, or it may be a configuration that includes multiple magnetic pieces arranged in the circumferential direction.

[0021] <1-2.Status 2> The stator 2 is radially opposite to the rotor 1. As described above, the blower 100 includes the stator 2. The stator 2 has a stator core 21, an insulator 22, a coil section 23, a jumper wire cover 24, an extension section 25, and a tangle pin 26.

[0022] The stator core 21 faces the rotor 1 (particularly the magnet 12) in the radial direction. As described above, the stator 2 has a stator core 21. In this embodiment, the stator 2 is positioned radially outward from the rotor 1 (particularly the magnet 12). The stator core 21 is a magnetic material, and in this embodiment, it is a laminate in which electromagnetic steel sheets are stacked in the axial direction.

[0023] The stator core 21 has a core back 211 and teeth 212. In this embodiment, the core back 211 is cylindrical, extending axially around the rotor 1. However, the core back 211 is not limited to this example, and may be composed of multiple core back pieces that extend axially and are arranged in the circumferential direction. The teeth 212 extend radially inward from the core back 211 and are radially opposite to the magnet 12. Multiple teeth 212 are arranged with gaps in the circumferential direction. In the following, the gap between adjacent teeth 212 in the circumferential direction may be referred to as a "slot 213".

[0024] The stator 2 further includes an insulator 22. The insulator 22 is positioned on the stator core 21 (particularly the teeth 212) and covers its surface. The insulator 22 is made of an electrically insulating material such as resin. The insulator 22 has a first insulator portion 221 and a second insulator portion 222. The first insulator portion 221 is positioned on one axial side Da1 of the stator core 21 and covers its surface. The first insulator portion 221 is fitted into the stator core 21 from the axial side Da1. The second insulator portion 222 is positioned on the other axial side Da2 of the stator core 21 and covers its surface. The second insulator portion 222 is fitted into the stator core 21 from the axial side Da2. One axial end of the second insulator portion 222 is connected to the other axial end of the first insulator portion 221.

[0025] The coil section 23 is arranged on the stator core 21. As described above, the stator 2 further has a stator core 21. There are multiple coil sections 23, which are arranged in the circumferential direction. The coil section 23 is a component on which a conductor (not shown) is arranged on the stator core 21 via an insulator 22. More specifically, the conductor is wound around the teeth 212 via the insulator 22. In the circumferential direction, the coil section 23 occupies a portion of the slot 213. The conductor is, for example, an enameled copper wire or a metal wire covered with an insulating material. When a drive current is supplied to the coil section 23, the stator 2 is excited and drives the rotor 1.

[0026] The jumper wire cover 24 is attached to the other axial end of the stator 2 and covers the coil head (not shown) on the other axial Da2 side of the coil section 23, as well as the jumper wires (not shown) connecting each coil section 23 from the radial direction. The jumper wire cover 24 is made of resin, for example, and electrically insulates the coil head (not shown) and jumper wires on the other axial Da2 side from the housing 4 (particularly the second housing section 42 described later).

[0027] The extension portion 25 extends in the other axial direction Da2 at the other axial end of the stator 2. The extension portion 25 is an example of the "first extension portion" of the present invention. As described above, the stator 2 has the extension portion 25. An electrically insulating material such as resin is used for the extension portion 25. The extension portion 25 extends in the other axial direction Da2 from the second insulator portion 222 and holds the entanglement pin 26. In this embodiment, the extension portion 25 and the second insulator portion 222 are integral and constitute a single member. However, the invention is not limited to this example, and the two may be separate members.

[0028] The entanglement pin 26 is made of metal, for example, and extends axially on the other axial side Da2 of the stator 2. The ends of the wires of the coil section 23 are connected to the entanglement pin 26. The other axial end of the entanglement pin 26 is electrically connected to the wiring on the substrate 5.

[0029] <1-3. Impeller 3> The impeller 3 is rotatable together with the shaft 11. As described above, the blower 100 includes the impeller 3.

[0030] The impeller 3 has a hub 31 and rotor blades 32. The hub 31 is positioned at one axial end of the shaft 11 and extends radially outward from the shaft 11. The rotor blades 32 extend radially outward from the radially outer end of the hub 31. The rotor blades 32 are circumferentially rotatable about a central axis CA that extends axially.

[0031] As the impeller 3 rotates together with the rotor 1, the rotor blades 32 rotate around the central axis CA. This causes the impeller 3 to draw in air Ar from one axial end of the housing 4 and expel it to the other axial end Da2.

[0032] <1-4. Enclosure 4> The housing 4 houses the rotor 1, stator 2, and impeller 3. As described above, the blower 100 includes the housing 4. The housing 4 has a first housing section 41 and a second housing section 42. The second housing section 42 is connected to the first housing section 41. In this embodiment, the first housing section 41 and the second housing section 42 are each cast products made of zinc alloy. However, the materials and manufacturing methods of the first housing section 41 and the second housing section 42 are not limited to this example.

[0033] <1-4-1. First housing section 41> The first housing portion 41 holds the shaft 11 on one axial side Da1. The first housing portion 41 includes a first cylindrical portion 411, a lid portion 412, a first bearing holder 413, an outer housing portion 414, and a stationary vane 415.

[0034] The first cylindrical portion 411 extends axially and surrounds one axial side Da1 of the rotor 1 and stator 2. In the following, the first cylindrical portion 411 and the second cylindrical portion 421 of the second housing portion 42, which will be described later, may be collectively referred to as the "cylindrical portion 401". The cylindrical portion 401 extends axially and surrounds the rotor 1 and stator 2. The housing 4 has the cylindrical portion 401. One axial end of the cylindrical portion 401 (specifically, the first cylindrical portion 411) is positioned on the other axial side Da2 of the hub 31 of the impeller 3. Also, one axial end of the cylindrical portion 401 (specifically, the first cylindrical portion 411) is positioned at the same radial position as the radially outer end of the hub 31, or radially inward from the radially outer end of the hub 31. This prevents air Ar, which is sent out on the other axial side Da2 by the rotor blades 32, from flowing between the first cylindrical portion 411 and the hub 31 in the axial direction. Therefore, air Ar can be smoothly flowed in the axial direction towards the other Da2.

[0035] The first cylindrical portion 411 has a first circumferential wall portion 4111. The first circumferential wall portion 4111 extends in the other axial direction Da2 at the other axial end of the first cylindrical portion 411. Furthermore, the first circumferential wall portion 4111 extends in the circumferential direction and surrounds the rotor 1 and the stator 2. In this embodiment, the first circumferential wall portion 4111 is annular, surrounding the central axis CA. However, the embodiment is not limited to this example, and the first circumferential wall portion 4111 may be configured to be arranged in multiples in the circumferential direction. In this case, each of the first circumferential wall portions 4111 may also be arc-shaped when viewed from the axial direction.

[0036] The lid portion 412 extends radially inward from one axial end of the cylindrical portion 401 (more specifically, the first cylindrical portion 411). As described above, the housing 4 has the lid portion 412. The lid portion 412 has an opening 4121. The opening 4121 is an example of the "second opening" of the present invention and penetrates the lid portion 412 in the axial direction. The opening 4121 communicates with the wind tunnel 402, which will be described later, through the space between the hub 31, one axial end of the first cylindrical portion 411 and the lid portion 412.

[0037] The first bearing holder 413 is located at the radially inner end of the cover portion 412. The first bearing holder 413 is located axially one side Da1 from the stator 2 and rotatably supports the shaft 11 via the first bearing 4131. The first bearing 4131 is located at one axial end of the shaft 11. More specifically, the first bearing holder 413 and the first bearing 4131 are located axially one side Da1 from the stator core 21 and the coil portion 23.

[0038] The outer housing portion 414 is cylindrical in shape and extends in the axial direction, surrounding the impeller 3 and the cylindrical portion 401. As described above, the housing 4 has the outer housing portion 414. For example, in Figure 1, the outer housing portion 414 surrounds the impeller 3, the first cylindrical portion 411, and the second cylindrical portion 421 on one axial side Da1.

[0039] The outer housing portion 414, together with the cylindrical portion 401 (particularly the first cylindrical portion 411), constitutes the wind tunnel 402. The housing 4 has the wind tunnel 402. The wind tunnel 402 is a passage through which air Ar sent from the impeller 3 flows, and is located between the cylindrical portion 401 and the outer housing portion 414, extending in the axial direction. One axial end of the wind tunnel 402 is the axial end of the outer housing portion 414 and opens to the outside of the blower 100. The other axial end of the wind tunnel 402 is located between the other axial end of the outer housing portion 414 and the cylindrical portion 401 and opens to the outside of the blower 100. When the impeller 3 rotates, one axial end of the wind tunnel 402 functions as an intake port that draws air Ar from the outside. The other axial end of the wind tunnel 402 functions as an exhaust port that sends air Ar to the outside.

[0040] Multiple stationary vanes 415 are arranged circumferentially between the cylindrical portion 401 (particularly the first cylindrical portion 411) and the outer housing portion 414. The radially inner ends of the stationary vanes 415 are connected to the first cylindrical portion 411. The radially outer ends of the stationary vanes 415 are connected to the outer housing portion 414. The stationary vanes 415 are positioned on the other axial side Da2 of the rotor blade 32 and extend at least in the axial direction. Figure 4 is a view of the stationary vanes 415 from the radially inner to the radially outer. As shown in Figure 4, the axial side Da1 of the stationary vanes 415 extends circumferentially toward the forward direction of rotation of the rotor blade 32.

[0041] <1-4-2. Second enclosure section 42> The second housing portion 42 is bottomed and holds the other axial side Da2 of the shaft 11. The second housing portion 42 is connected to the other axial end of the first cylindrical portion 411. The second housing portion 42 includes a second cylindrical portion 421, a bottom portion 422, and a second bearing holder 423.

[0042] The second cylindrical portion 421 is positioned on the other axial side Da2 from the first cylindrical portion 411, extends in the axial direction, and surrounds the other axial side Da2 of the rotor 1 and stator 2.

[0043] The second cylindrical portion 421 has a second peripheral wall portion 4211, an opening 4212, and an arm portion 4213.

[0044] The second circumferential wall portion 4211 extends in one axial direction Da1 at one axial end of the second cylindrical portion 421. Furthermore, the second circumferential wall portion 4211 extends in the circumferential direction and surrounds the rotor 1 and the stator 2. In this embodiment, the second circumferential wall portion 4211 is annular, surrounding the central axis CA, similar to the first circumferential wall portion 4111. However, the embodiment is not limited to this example, and the second circumferential wall portion 4211 may be configured to be arranged in multiples in the circumferential direction. In this case, each second circumferential wall portion 4211 may also be arc-shaped when viewed from the axial direction.

[0045] Furthermore, in this embodiment, the second circumferential wall portion 4211 is positioned at the radially outer end of the first circumferential wall portion 4111 and overlaps radially with the first circumferential wall portion 4111 in contact. However, the embodiment is not limited to this example, and the second circumferential wall portion 4112 may be positioned at the radially inner end of the first circumferential wall portion 4111. In other words, one of the circumferential wall portions, the first circumferential wall portion 4111 and the second circumferential wall portion 4211, may be positioned at the radially outer end of the other circumferential wall portion. In this way, the first cylindrical portion 411 and the second cylindrical portion 421 can be connected by press-fitting the other circumferential wall portion into the first circumferential wall portion.

[0046] The opening 4212 is an example of the "first opening" of the present invention and penetrates the cylindrical portion 401 (more specifically, the second cylindrical portion 421) radially. As described above, the second cylindrical portion 421 has the opening 4212. The opening 4212 extends from the other axial end of the cylindrical portion 401 (more specifically, the second cylindrical portion 421) in one axial direction Da1.

[0047] The arm portion 4213 extends in the other axial direction Da2 at the other axial end of the second cylindrical portion 421. Multiple arm portions 4213 are arranged in the circumferential direction. Openings 4212 are positioned between adjacent arm portions 4213 in the circumferential direction. The arm portions 4213, together with the extension portion 4222 described later, connect the second cylindrical portion 421 and the second bearing holder 423.

[0048] The bottom portion 422 extends radially inward from the other axial end of the cylindrical portion 401 (more specifically, the second cylindrical portion 421). As described above, the housing 4 has the bottom portion 422.

[0049] The bottom portion 422 has an opening 4221. The opening 4221 is an example of the "third opening" of the present invention and penetrates the bottom portion 422 in the axial direction. The opening 4221 extends radially inward from the radially outer end of the bottom portion 422 and connects to the opening 4212 of the cylindrical portion 401.

[0050] Furthermore, the bottom portion 422 has an extension portion 4222. The extension portion 4222 is an example of the "second extension portion" of the present invention and extends radially inward from one axial end of the cylindrical portion 401 (more specifically, the second cylindrical portion 421). Multiple extension portions 4222 are arranged in the circumferential direction. An opening 4221 is arranged between adjacent extension portions 4222 in the circumferential direction. The extension portions 4222 extend radially inward from the other axial end of the arm portion 4213 of the second cylindrical portion 421. In other words, the radially outer end of each extension portion 4222 is connected to the other axial end of the arm portion 4213. The radially inner end of each extension portion 4222 is connected to the second bearing holder 423.

[0051] The extension portion 4222 is aligned circumferentially with respect to the extension portion 25 of the stator 2 and the support portion 65 of the spacer 6 (see, for example, Figure 2). In this way, the extension portion 4222 and This prevents the extension portion 25 and the support portion 65 from overlapping in the axial direction. Therefore, it is possible to prevent an increase in the axial size of the blower 100.

[0052] Furthermore, the second housing portion 42 has a rib 4223. The rib 4223 is plate-shaped and extends in a direction intersecting the circumferential direction, reinforcing the arm portion 4213 and the extension portion 4222. The rib 4223 protrudes radially inward from the arm portion 4213 and protrudes axially in one direction Da1 from the extension portion 4222. The radially inward end of the rib 4223 is connected to the second bearing holder 423.

[0053] The second bearing holder 423 is an example of the "bearing holder" of the present invention and is located at the radially inner end of the bottom portion 422. As described above, the housing 4 has the second bearing holder 423. The second bearing holder 423 rotatably supports the shaft 11 via the second bearing 4231. The second bearing 4231 is an example of the "bearing" of the present invention. The second bearing 4231 is located at the other axial end of the shaft 11.

[0054] The second bearing holder 423 is positioned axially on the other side Da2 from the stator 2. More specifically, the second bearing holder 423 and the second bearing 4231 are positioned axially on the other side Da2 from the stator core 21 and the coil portion 23.

[0055] In the blower 100, as described above, the first bearing holder 413 is positioned axially Da1 relative to the stator 2, and the second bearing holder 423 is positioned axially Da2 relative to the stator 2. As a result, these do not overlap with the stator 2 when viewed radially, allowing the stator 2 to be positioned further radially inward. Consequently, the diameter of the stator 2 can be reduced, and the blower 100 can be made more compact. In addition, the axial distance between the first bearing holder 413 and the second bearing holder 423 can be increased, resulting in more stable rotation of the rotor 1.

[0056] <1-5. Substrate 5> The substrate 5 is positioned Da2 on the other axial side of the second housing portion 42 and mounts drive circuits and the like. The substrate 5 is positioned Da2 on the other axial side of the flat plate portion 61 of the spacer 6 (described later) and extends in a direction intersecting the axial direction. As described above, the blower 100 includes the substrate 5. The substrate 5 is in contact with the other axial end of the flat plate portion 61.

[0057] A connector 51 is mounted on the other axial end face of the circuit board 5. External connection wires (not shown) are electrically connected to the connector 51. These external connection wires are wires that are brought out to the outside of the blower 100 and electrically connect the circuit board 5 to external equipment (such as an external power supply) of the blower 100.

[0058] Recesses 52 and 53 are positioned at the outer edge (i.e., the radially outer end) of the substrate 5. Each of the recesses 52 and 53 is recessed radially inward. Furthermore, each of the recesses 52 and 53 penetrates the substrate 5 in the axial direction, in other words, opening in one axial direction Da1 and the other Da2.

[0059] The second connecting portion 64 of the spacer 6, described later, is inserted through the recess 52. The interlocking pin 26 is inserted through the recess 53. This allows the interlocking pin 26 to be positioned without being affected by the arrangement of the substrate 5. Multiple recesses 52 and 53 are arranged in the circumferential direction. In this embodiment, the multiple recesses 52 and 53 are arranged at equal intervals in the circumferential direction. However, the arrangement of the multiple recesses 52 and 53 in the circumferential direction does not have to be at equal intervals.

[0060] <1-6. Spacer 6> Next, the spacer 6 will be described with reference to Figures 1 to 5B. Figure 5A is a perspective view showing an example configuration of the spacer 6 on one axial side, Da1. Figure 5B is a perspective view showing an example configuration of the spacer 6 on the other axial side, Da2.

[0061] The spacer 6 is attached to the housing 4. As described above, the blower 100 includes the spacer 6. In detail, the spacer 6 holds the substrate 5 and is attached to the other axial end of the bottom portion 422. The spacer 6 has a flat portion 61, a peripheral wall portion 62, a first connecting portion 63, a second connecting portion 64, a pair of support portions 65, and a protruding portion 66.

[0062] <1-6-1. Flat plate part 61> The flat plate portion 61 is positioned at the other axial end of the bottom portion 422 and extends radially. As described above, the spacer 6 has the flat plate portion 61. The flat plate portion 61 is positioned in the axial direction between the bottom portion 422 of the housing 4 and the substrate 5. For example, the flat plate portion 61 is made of an electrically insulating material such as resin. Because the flat plate portion 61 is electrically insulating, it can electrically insulate the substrate 5 from the shaft 11 and the housing 4.

[0063] The opening 4212 of the bottom portion 422 faces the flat plate portion 61. In the blower 100, air Ar is sent axially in the other direction Da2 through the wind tunnel 402 formed between the cylindrical portion 401 and the outer housing portion 414 by the rotation of the impeller 3 having the rotor blades 32. A portion of this air Ar flows into the cylindrical portion 401 at the opening 4212 of the cylindrical portion 401 and also strikes the flat plate portion 61 of the spacer 6 at the opening 4221 of the bottom portion 422 and flows axially in the direction Da1. This air Ar then passes around the rotor 1 and stator 2 (particularly through the gaps between adjacent coil portions 23 in the circumferential direction) and reaches the opening 4121 of the cover portion 412. Furthermore, this air Ar flows out into the wind tunnel 402 through the opening 4121 and the gap between the cover portion 412 and the hub 31 in the axial direction, and merges with the air Ar sent axially in the other direction Da2 by the rotor blades 32.

[0064] As mentioned above, one axial end of the cylindrical portion 401 is positioned at the same radial position as the radially outer end of the hub 31, or radially inward from the radially outer end of the hub 31. Therefore, the air Ar sent out in the other axial direction Da2 by the rotor blade 32 does not flow into the space between the lid portion 412 and the hub 31 and the opening 4121 in the axial direction.

[0065] In the blower 100, a portion of the air Ar blown out by the rotor blades 32 is guided into the cylindrical section 401 and cools the rotor 1 and stator 2 (especially the coil section 23) by passing around them. The guided air Ar then merges with the air Ar blown out by the rotor blades 32 through the opening 4121 of the cover section 412. In other words, the air Ar that has cooled the rotor 1 and stator 2 returns to the rotor blade 32 side of the wind tunnel 402. Therefore, the blower 100 can cool the rotor 1 and stator 2 while suppressing a decrease in airflow.

[0066] Preferably, the opening 4121 of the lid 412 overlaps the coil section 23 in the axial direction (see, for example, Figures 1 and 3). This makes it easier for the air Ar flowing out from the opening 4121 to flow around the coil head of the coil section 23 on the axial side Da1. Note that this coil head refers to the portion of the coil section 23 that is on the axial side Da1 of the stator core 21. Therefore, the cooling effect of the coil section 23 can be further enhanced. However, this example does not exclude configurations in which the opening 4121 does not overlap the coil section 23 in the axial direction.

[0067] Preferably, the opening 4121 overlaps axially with the space between adjacent coil sections 23 in the circumferential direction. For example, as shown in Figure 3, the opening 4121 overlaps axially with the space between coil sections 23 in the slot 213 (i.e., the portion of the slot 213 where no coil sections 23 are located). Therefore, air Ar flowing in from the opening 4212 and flowing in one axial direction Da1 can easily flow towards the opening 4121. This improves the circulation efficiency of the air Ar, allowing the stator 2 (especially the coil sections 23) to be cooled more effectively. However, this example does not exclude configurations in which the opening 4121 does not overlap axially with the space between adjacent coil sections 23 in the circumferential direction.

[0068] As shown in Figures 5A and 5B, the flat plate portion 61 has a first recess 611, a second recess 612, a substrate-side recess 613, an outer edge recess 614, a first through hole 615, and a second through hole 616.

[0069] The first recess 611 is located on one axial end face of the flat plate portion 61. As described above, the flat plate portion 61 has the first recess 611. The first recess 611 is recessed in the other axial direction Da2.

[0070] Preferably, the first recess 611 axially overlaps with the entire other axial end of the second bearing 4231. In other words, the outer edge of one axial end of the first recess 611 (i.e., the radially outer end) is positioned at the same radial position as the other axial end (particularly the radially outer end) of the second bearing 4231, or radially outward from the other axial end (particularly the radially outer end) of the second bearing 4231. This prevents contact between the second bearing 4231 and the flat plate portion 61. Therefore, the flat plate portion 61 can be stably positioned relative to the other axial end of the bottom portion 422. Furthermore, the transmission of vibrations from the rotating shaft 11 can be suppressed.

[0071] However, this example does not exclude configurations in which the first recess 611 does not axially overlap with at least a portion of the other axial end of the second bearing 4231 (for example, the radially outward side of the second bearing 4231). At a minimum, the shaft 11 must not come into contact with the flat plate portion 61. Also, if the second bearing 4231 is a ball bearing, the inner ring of the second bearing 4231 fixed to the shaft 11 must not come into contact with the flat plate portion 61.

[0072] The second recess 612 is located on one axial end face of the flat plate portion 61, and more specifically, on the bottom face of the first recess 611 facing one axial direction Da1. As described above, the flat plate portion 61 has the second recess 612. The second recess 612 is recessed in the other axial direction Da2.

[0073] Preferably, the second recess 612 overlaps axially with the other axial end of the shaft 11. In other words, the outer edge of the axial end of the second recess 612 (i.e., the radially outer end) is positioned at the same radial position as the other axial end of the shaft 11 (particularly the radially outer end), or radially outward from the other axial end of the shaft 11 (particularly the radially outer end). This prevents contact between the other axial end of the shaft 11 and the flat plate portion 61.

[0074] However, this example does not exclude a configuration in which the outer edge of one axial end of the second recess 612 (i.e., the radially outer end) is positioned radially inward from the radially outer end of the other axial end of the shaft 11, nor does it exclude a configuration in which the second recess 612 is omitted. At the very least, the shaft 11 must not come into contact with the flat plate portion 61.

[0075] The substrate-side recess 613 is located at the other axial end of the flat plate portion 61. As described above, the flat plate portion 61 has the substrate-side recess 613. The substrate-side recess 613 is recessed in one axial direction Da1 and opens towards the substrate 5. This allows elements, wiring, etc., that are arranged on one axial end face of the substrate 5 to be accommodated in the substrate-side recess 613. Therefore, it is possible to prevent these from coming into contact with the flat plate portion 61. Furthermore, when forming the spacer 6 by molding, it is possible to prevent the shape of the flat plate portion 61 from being distorted due to shrinkage.

[0076] The outer edge recess 614 is positioned between a pair of support portions 65 at the radially outer end of the flat plate portion 61 and is recessed radially inward. The extension portion 25 and the interlocking pin 26 are inserted through the outer edge recess 614. This allows the extension portion 25 and the interlocking pin 26 to be positioned without being affected by the arrangement of the flat plate portion 61.

[0077] The first through-hole 615 and the second through-hole 616 penetrate the flat plate portion 61 in the axial direction. As described above, the flat plate portion 61 has the first through-hole 615 and the second through-hole 616. As will be described later, the first through-hole 615 is located near the base of the first connecting portion 63. The second through-hole 616 is located near the base of the second connecting portion 64.

[0078] <1-6-2. Peripheral wall part 62> The peripheral wall portion 62 protrudes in the other axial direction Da2 at the other axial end of the flat plate portion 61. As described above, the flat plate portion 61 has the peripheral wall portion 62. When viewed from the axial direction, the peripheral wall portion 62 surrounds the substrate-side recess 613. For example, the peripheral wall portion 62 is arranged along the outer edge of the flat plate portion 61 and the substrate-side recess 613. The substrate 5 is in contact with the other axial end of the peripheral wall portion 62. Because the substrate 5 is in contact with the other axial end of the peripheral wall portion 62, the spacer 6 can sandwich the substrate 5 between the second connecting portion 64 and the peripheral wall portion 62. Therefore, the spacer 6 can hold the substrate 5 more stably.

[0079] <1-6-3. First connection section 63> The first connecting portion 63 extends from the flat plate portion 61 in one axial direction Da1 and is connected to the housing 4. As described above, the spacer 6 has the first connecting portion 63.

[0080] There are multiple first connecting portions 63, more preferably three or more. In this embodiment, the multiple first connecting portions 63 are arranged at equal intervals in the circumferential direction. This allows the spacer 6 to be stably attached to the housing 4.

[0081] However, the examples of this embodiment do not exclude configurations in which all first connecting portions 63 are arranged at different intervals, nor do they exclude configurations in which some of the first connecting portions 63 are arranged at different intervals in the circumferential direction than other parts of the first connecting portions 63. Furthermore, the examples of this embodiment do not exclude configurations in which there is only one first connecting portion 63.

[0082] In this embodiment, multiple first connecting parts 63 are connected to the second bearing holder 423. By connecting the first connecting parts 63, which are arranged at equal intervals in the circumferential direction, to the second bearing holder 423, the spacer 6 can be mounted with high precision with respect to the central axis CA. However, this example does not exclude a configuration in which at least one first connecting part 63 is connected to a part of the housing 4 other than the second bearing holder 423.

[0083] Each first connecting portion 63 has a first column portion 631 and a first claw portion 632.

[0084] The first column portion 631 extends from the flat plate portion 61 in one axial direction Da1. As described above, the first connecting portion 63 has the first column portion 631. In this embodiment, the first column portion 631 of the first connecting portion 63 protrudes in one axial direction Da1 from one axial end of the peripheral wall portion 62. However, the embodiment is not limited to this example, and the first column portion 631 of the first connecting portion 63 may be arranged on one axial end face or radially outer end face of the flat plate portion 61 and protrude in one axial direction Da1.

[0085] The first claw portion 632 protrudes from the first column portion 631 in a direction intersecting the axial direction and engages with the housing 4, for example, by being hooked onto the housing 4. As described above, the first connecting portion 63 has the first claw portion 632. The first claw portion 632 protrudes radially inward from the first column portion 631 and is hooked onto the second bearing holder 423.

[0086] By engaging the first claw portion 632 with the housing 4, the first connecting portion 63 can be easily connected to the housing 4 by a so-called snap fit.

[0087] However, this example does not exclude a configuration in which at least one first connecting portion 63 does not have an engagement structure consisting of the first column portion 631 and the first claw portion 632 as described above. For example, at least one first connecting portion 63 may be connected to the housing 4 by means of welding, brazing, bonding, etc.

[0088] Furthermore, in this embodiment, the first column portion 631 of the first connecting portion 63 is connected to the peripheral wall portion 62. However, the embodiment is not limited to this example, and in at least one of the first connecting portions 63, the first column portion 631 does not have to be connected to the peripheral wall portion 62. For example, at least one of the circumferential ends of the first column portion 631, which is positioned on one axial end face or radially outer end face of the flat plate portion 61, does not have to be connected to the peripheral wall portion 62. In this case, the first column portion 631 can bend more significantly in the direction perpendicular to the axial direction.

[0089] For each first connecting portion 63, one first through hole 615 is provided in the flat plate portion 61. Preferably, in each first connecting portion 63, all of the first claw portions 632 overlap the first through hole 615 in the axial direction. This way, for example, when forming the spacer 6 by mold molding, the first claw portions 632 can be formed by removing the mold axially without the need for inserts. Therefore, the shape of the mold can be simplified and the number of mold parts can be reduced. Thus, the productivity of the spacer 6 can be improved.

[0090] However, this example does not exclude a configuration in which, in at least one first connecting portion 63, not all of the first claw portions 632 overlap the first through hole 615 in the axial direction. Alternatively, the first through hole 615 that overlaps the first claw portion 632 in the axial direction may be omitted for at least one first connecting portion 63.

[0091] <1-6-4. Second connection section 64> The second connecting portion 64 extends from the flat plate portion 61 in the other axial direction Da2 and is connected to the substrate 5. As described above, the spacer 6 has the second connecting portion 64.

[0092] Since the spacer 6 has a first connecting portion 63 and a second connecting portion 64, the circuit board 5 can be attached to the housing 4 via the spacer 6. Therefore, it becomes easier to attach the circuit board 5 to the housing 4.

[0093] There are multiple second connecting portions 64, more preferably three or more. In this embodiment, the multiple second connecting portions 64 are arranged at equal intervals in the circumferential direction. This allows the spacer 6 to stably hold the substrate 5.

[0094] However, the examples of this embodiment do not exclude configurations in which all second connecting portions 64 are arranged at different intervals, nor do they exclude configurations in which some second connecting portions 64 are arranged at different intervals in the circumferential direction than other second connecting portions 64. Furthermore, the examples of this embodiment do not exclude configurations in which there is only one second connecting portion 64.

[0095] The second connection portion 64 is connected to the radially outer end of the substrate 5. This helps to suppress the reduction in the mounting area of ​​the substrate 5 on which the elements, wiring, etc. are mounted.

[0096] Each second connecting portion 64 has a second column portion 641 and a second claw portion 642.

[0097] The second column portion 641 extends from the flat plate portion 61 in the other axial direction Da2. As described above, the second connecting portion 64 has the second column portion 641. In this embodiment, the second column portion 641 of the second connecting portion 64 is positioned on the other axial end face (its radially outer end) of the flat plate portion 61 and protrudes in the other axial direction Da2. However, the embodiment is not limited to this example, and the second column portion 641 may be positioned on the radially outer surface of the flat plate portion 61 and protrude in the other axial direction Da2. Alternatively, the second column portion 641 may protrude in the other axial direction Da2 from the other axial end of the peripheral wall portion 62. The other axial end of the second column portion 641 protrudes in the other axial direction Da2 beyond the substrate 5 through the recess 52 of the substrate 5.

[0098] The second claw portion 642 protrudes from the second column portion 641 in a direction intersecting the axial direction toward the substrate 5, engages with the substrate 5, and hooks onto the substrate 5. As described above, the second connecting portion 64 has the second claw portion 642. The second claw portion 642 is positioned in the other axial direction Da2 from the substrate 5. The second claw portion 642 protrudes radially inward from the second column portion 641 and hooks onto the outer edge of the substrate 5 along the recess 52.

[0099] By engaging the second claw portion 642 with the substrate 5, the second connecting portion 64 can be easily connected to the substrate 5 by a so-called snap fit.

[0100] However, this example does not exclude configurations in which at least one second connecting portion 64 does not have an engagement structure consisting of the second column portion 641 and the second claw portion 642 as described above. For example, at least one second connecting portion 64 may be connected to the substrate 5 by means of welding, brazing, adhesive, etc. Also, in at least one second connecting portion 64, the other axial end of the second column portion 641 does not have to be inserted into the recess 52 of the substrate 5. In other words, the second claw portion 642 may be hooked onto the radially outer end of the substrate 5 outside the recess 52.

[0101] Furthermore, in this embodiment, the second column portion 641 of the second connecting portion 64 is not connected to the peripheral wall portion 62. Therefore, the second column portion 641 can bend more significantly in the direction perpendicular to the axial direction. However, this example does not exclude a configuration in which the second column portion 641 is connected to the peripheral wall portion 62 in at least one of the second connecting portions 64. For example, at least one of the circumferential ends of the second column portion 641 and the other end may be connected to the peripheral wall portion 62.

[0102] For each second connecting portion 64, one second through hole 616 is provided in the flat plate portion 61. Preferably, in each second connecting portion 64, all of the second claw portions 642 overlap the second through hole 616 in the axial direction. This way, for example, when forming the spacer 6 by mold molding, the second claw portions 642 can be formed by removing the mold axially without the need for inserts. Therefore, the shape of the mold can be simplified and the number of mold parts can be reduced. Thus, the productivity of the spacer 6 can be improved.

[0103] However, this example does not exclude a configuration in which, in at least one second connecting portion 64, the entirety of the second claw portion 642 does not overlap the second through hole 616 in the axial direction. Alternatively, for at least one second connecting portion 64, the second through hole 616 that overlaps the second claw portion 642 in the axial direction may be omitted.

[0104] <1-6-5. Support part 65> The pair of support portions 65 extend from the flat plate portion 61 in one axial direction Da1 and are aligned in the circumferential direction. As described above, the spacer 6 has a pair of support portions 65. One support portion 65 contacts one circumferential end of the extension portion 25 of the stator 2. The other support portion 65 contacts the other circumferential end of the extension portion 25. In this way, the extension portion 25 can be clamped in the circumferential direction by the pair of support portions 65. Therefore, the spacer 6 can be fixed to the stator 2.

[0105] Each support portion 65 has a first wall portion 651 and a second wall portion 652. The first wall portion 651 protrudes from the flat plate portion 61 in one axial direction Da1 and widens radially. The second wall portion 652 protrudes from the flat plate portion 61 in one axial direction Da1 and widens from the first wall portion 651 in a direction perpendicular to the axial direction and intersecting the radial direction. In this embodiment, each support portion 65 is so-called L-shaped when viewed from the axial direction. This allows for improved strength of the support portion 65 with a simple configuration. Therefore, the fixing strength of the spacer 6 to the stator 2 can be improved. However, this example does not exclude configurations in which the support portion 65 is not L-shaped as described above. For example, the support portion 65 may have a circular cross-section, an n-sided (n is a natural number of 3 or more) cylindrical shape, or a cylindrical shape.

[0106] In this embodiment, the first wall portion 651 of the support portion 65 on one side in the circumferential direction extends radially inward from the other circumferential end of the second wall portion 652. The first wall portion 651 of the support portion 65 on the other side in the circumferential direction extends radially inward from the other circumferential end of the second wall portion 652. The embodiment is not limited to this example, and in at least one of the support portions 65, the first wall portion 651 may extend radially outward. Furthermore, the first wall portions 651 of the pair of support portions 65 preferably face each other in the circumferential direction, but the embodiment is not limited to this example, and they do not have to face each other in the circumferential direction. For example, the radial positions of the first wall portions 651 of the pair of support portions 65 may be radially offset from each other.

[0107] <1-6-6.Protrusion 66> The protrusion 66 extends from the flat plate portion 61 in the other axial direction Da2. The protrusion 66 may be positioned on the radially outer surface of the flat plate portion 61 as shown in Figures 5A and 5B, or on one axial end face of the flat plate portion 61. Furthermore, there may be one protrusion 66 or multiple protrusions arranged in the circumferential direction. The protrusion 66 contacts the radially outer surface of the substrate 5. When holding the substrate 5 with the spacer 6, by making contact with the radially outer end of the substrate 5, it becomes easier to connect the substrate 5 to the spacer 6. It also becomes easier to determine the position of the substrate in the axial and perpendicular directions. Note that the protrusion 66 may be omitted.

[0108] <2. Hairdressing equipment 500> Next, an example of the application of the blower 100 will be explained with reference to Figure 6. Figure 6 is a schematic diagram showing an example configuration of a hairdressing / beauty device 500 equipped with the blower 100. In Figure 6, the hairdressing / beauty device 500 is a hair dryer that dries the user's hair, etc., by blowing out hot air.

[0109] As shown in Figure 6, the hairdressing and beauty device 500 includes a blower 100. The hairdressing and beauty device 500 further includes a housing 200, a heater 300, and a handle 400. The housing 200 is cylindrical and houses the blower 100 and the heater 300. The blower 100 draws in air Ar from the intake port 201 of the housing 200 and sends it out toward the outlet 202. The heater 300 is located inside the housing 200, on the side of the outlet 202 that is closer to the blower 100, and heats the air Ar sent out from the blower 100. The handle 400 is grippable by the user of the hairdressing and beauty device 500 and protrudes outward from the outer surface of the housing 200.

[0110] In the hairdressing and beauty treatment device 500 shown in Figure 6, the rotor 1 and stator 2 of the blower 100 can be cooled while suppressing a decrease in the airflow rate of the blower 100.

[0111] The applications of the blower 100 are not limited to the examples shown in Figure 6. The blower 100 can be broadly applied to devices that have a blowing function. For example, the hairdressing device 500 may be a hair care device (barbering device) such as a hair dryer, or a skin care device (beauty device) such as a facial device or humidifier.

[0112] <3. Others> Embodiments of the present invention have been described above. However, the scope of the present invention is not limited to the embodiments described above. The present invention can be implemented by making various modifications to the embodiments described above without departing from the spirit of the invention. Furthermore, the matters described in the embodiments described above can be combined as appropriate and arbitrarily as long as they do not create contradictions. [Industrial applicability]

[0113] The present invention is useful, for example, in devices having a blowing function. [Explanation of symbols]

[0114] 100... Blower, 200... Housing, 201... Intake, 202... Outlet, 300... Heater, 400... Handle, 500... Hairdressing device, 1... Rotor, 11... Shaft, 12... Magnet, 2... Stator, 21... Stator core, 211... Core back, 212... Teeth, 213... Slot, 22... Insulator, 221... First insulator section, 222... Second insulator section, 23... Coil section, 25... Extension section, 26... Entanglement pin, 3... Impeller, 31... Hub, 32... Rotating blades, 4... Housing, 401... Cylinder section, 402... wind tunnel41...First housing section, 411...First cylindrical section, 4111...First peripheral wall section, 412...Lid section, 4121...Opening, 413...First bearing holder, 4131...First bearing, 414...Outer housing section, 415...Stator vane, 42...Second housing section, 421...Second cylindrical section, 4211...Second peripheral wall section, 4212...Opening, 4213...Arm section, 422...Bottom section, 4221...Opening, 4222...Extension section, 4223...Rib, 423...Second bearing holder, 4231...Second bearing, 5...Circuit board, 51...Connector 52, 53... recess, 6... spacer, 61... flat plate section, 611... first recess, 612... second recess, 613... substrate side recess, 614... outer edge recess, 615... first through hole, 616... second through hole, 62... peripheral wall section, 63... first connection section, 631... first column section, 632... first claw section, 64... second connection section, 641... second column section, 642... second claw section, 65... support section, 651... first wall section, 652... second wall section, 66... ​​protrusion, CA... central axis, Ar... air, Da1... axial one side, Da2... axial other side

Claims

1. A rotor having a shaft that can rotate around a central axis extending in the axial direction, A stator facing the rotor in the radial direction, An impeller that can rotate together with the shaft, A housing that houses the rotor, the stator, and the impeller, A spacer attached to the aforementioned housing, Equipped with, The impeller is, A hub is positioned at one end of the shaft in the axial direction and extends radially outward from the shaft, A rotor blade extending radially outward from the radially outer end of the hub and sending air in the other axial direction, It has, The aforementioned enclosure is A cylindrical portion extending in the axial direction and surrounding the rotor and the stator, A lid portion that extends radially inward from one axial end of the cylindrical portion, The bottom portion extends radially inward from the other axial end of the cylindrical portion, It is cylindrical in shape extending in the axial direction, and comprises an outer housing portion surrounding the impeller and the cylindrical portion, It has, The axial end of the cylindrical portion is positioned in the other axial direction relative to the hub, and is located at the same radial position as the radially outer end of the hub, or radially inward relative to the radially outer end of the hub. The cylindrical portion has a first opening that extends axially from the other axial end of the cylindrical portion and penetrates the cylindrical portion radially. The lid portion has a second opening that penetrates the lid portion in the axial direction. The bottom portion has a third opening that penetrates the bottom portion in the axial direction. The spacer has a flat plate portion that is positioned on the other axial side of the bottom and extends radially, The third opening extends radially inward from the radially outer end of the bottom and connects to the first opening, and faces the flat plate portion, and is a blower.

2. The stator is, A stator core facing the rotor in the radial direction, The coil portion arranged in the stator core, It has, The blower according to claim 1, wherein the second opening overlaps the coil portion in the axial direction.

3. The stator is A stator core facing the rotor in the radial direction, The coil portion arranged in the stator core, It has, The coil portion is a plurality of units, arranged in the circumferential direction. The blower according to claim 1, wherein the second opening overlaps in the axial direction with the space between adjacent coil portions in the circumferential direction.

4. The substrate is further positioned in the opposite axial direction to the aforementioned flat plate portion and extends in a direction intersecting the axial direction, The previous spacer is A first connecting portion extends from the flat plate portion in one axial direction and is connected to the housing, A second connecting portion extends from the flat plate portion in the other axial direction and is connected to the substrate, A blower according to any one of claims 1 to 3, further comprising the above.

5. The blower according to claim 4, wherein the flat plate portion has electrical insulating properties.

6. The blower according to claim 4 or claim 5, wherein the first connecting portion is a plurality and is arranged at equal intervals in the circumferential direction.

7. The housing further includes a bearing holder located at the radially inner end of the bottom, The bearing holder rotatably supports the shaft via the bearing, The blower according to claim 6, wherein the plurality of first connection parts are connected to the bearing holder.

8. The bearing is positioned at the other axial end of the shaft, The flat plate portion has a first recess that is recessed in the other axial direction, The blower according to claim 7, wherein the first recess overlaps axially with the entire other axial end of the bearing.

9. The first connection part is, A column portion extending in one axial direction from the aforementioned flat plate portion, A first claw portion protrudes from the column portion in a direction intersecting the axial direction and is hooked onto the housing, A blower according to any one of claims 4 to 8, having the following features.

10. The flat plate portion has a first through hole that penetrates the flat plate portion in the axial direction, The blower according to claim 9, wherein the first through hole overlaps axially with the entirety of the first claw portion.

11. The blower according to any one of claims 4 to 10, wherein the second connecting portion is a plurality and is arranged at equal intervals in the circumferential direction.

12. The blower according to any one of claims 4 to 11, wherein the second connecting portion is connected to the radially outer end of the substrate.

13. The substrate is in contact with the other axial end of the flat plate portion, The second connection part is, A second column portion extending from the flat plate portion in the other axial direction, A second claw portion protrudes from the second column portion in a direction intersecting the axial direction toward the substrate and is hooked onto the substrate, A blower according to any one of claims 4 to 12, having the following features.

14. The flat plate portion further has a second through hole that penetrates the flat plate portion in the axial direction, The blower according to claim 13, wherein the second through hole overlaps axially with the entirety of the second claw portion.

15. The aforementioned flat plate portion is A substrate-side recess that is recessed in one axial direction and opens facing the substrate, A peripheral wall portion surrounding the substrate-side recess when viewed from the axial direction, It has, The blower according to claim 13 or claim 14, wherein the substrate is in contact with the other axial end of the peripheral wall portion.

16. The blower according to any one of claims 4 to 14, wherein the flat plate portion has a substrate-side recess that is recessed in one axial direction and opens toward the substrate.

17. The stator further has a first extension extending in the other axial direction at the other axial end of the stator, The spacer has a pair of support portions that extend from the flat plate portion in one axial direction and are arranged in the circumferential direction. The blower according to any one of claims 1 to 16, wherein one of the support portions is in contact with one circumferential end of the first extension portion, and the other support portion is in contact with the other circumferential end of the first extension portion.

18. The aforementioned support portion is A first wall portion that protrudes from the flat plate portion in one axial direction and widens radially, A second wall portion protrudes from the flat plate portion in one axial direction and extends from the first wall portion in a direction perpendicular to the axial direction and intersecting the radial direction, The blower according to claim 17, having the following features.

19. The bottom portion has a second extension that extends radially inward from one axial end of the cylindrical portion, The blower according to claim 17 or claim 18, wherein the second extension portion is arranged circumferentially with respect to the first extension portion and the support portion.

20. The flat plate portion has a second recess that is recessed in the other axial direction, The blower according to any one of claims 1 to 19, wherein the second recess overlaps in the axial direction with the other axial end of the shaft.

21. A hairdressing and beauty apparatus equipped with a blower according to any one of claims 1 to 20.

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