Air blower

Abstract

This air blower comprises: an air blowing part; a base part that supports the air blowing part; and an oscillation mechanism that is disposed in the base part and causes the air blowing part to oscillate with respect to the base part. The oscillation mechanism includes: an oscillation motor; a motor base that has an upper surface on which the oscillation motor is disposed; and a transmission mechanism that transmits the rotation of the oscillation motor to the motor base and supports the motor base from a lower surface facing away from the upper surface.

Description

Blower

[0001] The present invention relates to a blower.

[0002] Conventionally, a circulator used for stirring and circulating air in a space has been known. In Patent Document 1, a glass ball that can roll freely is arranged in a pedestal portion, and the lower portion of the pedestal supports the upper portion of the pedestal through this glass ball, and a circulator in which the upper portion of the pedestal can swing left and right with respect to the lower portion of the pedestal is disclosed.

[0003] Japanese Patent Application Laid-Open No. 2019-065837

[0004] In the left and right swinging mechanism of the conventional circulator, since it is composed of a link and an arm, there is room for improvement in swinging while maintaining the levelness.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a blower capable of improving the levelness during the swinging operation.

[0006] One aspect of the present invention includes a blowing unit, a base unit that supports the blowing unit, and a swinging mechanism that is disposed in the base unit and causes the blowing unit to swing with respect to the base unit. The swinging mechanism includes a swinging motor, a motor base having an upper surface on which the swinging motor is disposed, and a transmission mechanism that transmits the rotation of the swinging motor to the motor base, and the transmission mechanism that supports the motor base from a lower surface facing the opposite side of the upper surface.

[0007] According to the blower having the above configuration, since the motor base is supported from the lower surface by the transmission mechanism, the horizontal stability during the swinging operation of the blowing unit is improved, and the occurrence of rattling in the horizontal plane can be suppressed. As a result, the levelness can be maintained during the swinging operation of the blowing unit.

[0008] Preferably, in the blower described above, a projection is formed on the lower surface of the motor base that protrudes downward toward the transmission mechanism, and the motor base is in contact with the transmission mechanism at the projection, while a gap is left between it and the transmission mechanism in the portion excluding the projection.

[0009] With the blower configuration described above, friction during the oscillating motion of the blower can be reduced compared to a configuration in which the entire lower surface of the motor base is in contact with the transmission mechanism. This effectively suppresses rattling in the horizontal plane during the oscillating motion of the blower.

[0010] Preferably, in the blower described above, the protrusion includes an inner protrusion that protrudes downward toward the transmission mechanism from the radially inner side of the lower surface of the motor base, and an outer protrusion that protrudes downward toward the transmission mechanism from the radially outer side of the lower surface of the motor base.

[0011] According to the blower configuration described above, since it has an inner protrusion and an outer protrusion as protrusions, the horizontal stability of the motor base can be further improved.

[0012] Preferably, in the blower described above, the protruding portion has an annular shape.

[0013] With the blower configuration described above, the horizontal stability of the motor base can be further improved.

[0014] Preferably, in the blower described above, a through hole is formed in the motor base at a position including the center of the oscillation of the blower section, and the transmission mechanism has a shaft portion that is inserted into the through hole.

[0015] With the blower configuration described above, the horizontal stability of the motor base can be further improved.

[0016] Preferably, the blower further comprises a power cord that extends outward from the base and a cap that is detachable from the base, the cap having a holding portion for holding the power cord.

[0017] With the blower configured as described above, the power cord can be held securely.

[0018] Preferably, in the blower described above, the blowing section includes a fan, a fan motor that rotates the fan, and a cover that houses the fan and the fan motor, wherein the cover has an air intake and an air outlet, and the air intake is formed to include a position that overlaps with the fan motor when viewed from the rear of the blowing section.

[0019] With the blower configuration described above, the air drawn in from the intake port can easily pass around the fan motor. As a result, the fan motor can be more easily air-cooled.

[0020] Preferably, the blower further comprises a vertical oscillation motor that causes the blowing section to oscillate vertically relative to the base section, and a motor cover that is arranged to cover the vertical oscillation motor and has a plurality of holes formed in it.

[0021] With the blower configured as described above, air can more easily come into contact with the up-and-down oscillating motor, making it easier to air-cool the motor.

[0022] Figure 1 is an external perspective view of the fan from the front. Figure 2 is a perspective view of the left-right oscillation mechanism from below. Figure 3 is a perspective view of the left-right oscillation mechanism from above. Figure 4 is a cross-sectional view of the left-right oscillation mechanism along the vertical direction. Figure 5 is an exploded perspective view of the left-right oscillation mechanism from below. Figure 6 is an exploded perspective view of the left-right oscillation mechanism from above. Figure 7 is a perspective view of the fan from below with the cap removed. Figure 8 shows the cap and power cord. Figure 9 is a view of the fan from the rear. Figure 10 is a perspective view showing the up-down oscillation mechanism and its surrounding configuration.

[0023] A blower according to one embodiment of the present invention will be described in detail below with reference to the drawings. The following embodiments are examples of the present invention and are not intended to limit the technical scope of the present invention. In each drawing, the same components are denoted by the same reference numerals, and their descriptions may be omitted.

[0024] In this specification, when the blower 1 is positioned on an installation surface (e.g., a horizontal floor), the upper side in the vertical direction is referred to as "upper" or "upward," and the lower side in the vertical direction is referred to as "lower" or "downward." The vertical direction may also be referred to as the "up and down direction." The direction in which air is blown out from the blower 1 is referred to as "forward," and the opposite side is referred to as "rear." The direction extending both forward and rearward may also be referred to as the "front-rear direction." The direction perpendicular to the up and down direction and the front-rear direction may also be referred to as the "left-right direction." These directions are for convenience in explaining the blower 1 according to this embodiment and are not intended to limit the interpretation of the present invention.

[0025] [External view of the blower 1] Figure 1 is an external perspective view of the blower 1 according to this embodiment. The blower 1 is a circulator, and the spiral grille (Figure 1), which is part of a sphere, is used to improve the reach of the airflow.

[0026] As shown in Figure 1, the blower 1 has a blower unit 2 and a base unit 3. The base unit 3 is positioned below the blower unit 2 and supports the blower unit 2. The blower unit 2 is supported by the base unit 3 so that it can rotate around an axis that extends in the vertical direction. That is, the blower unit 2 can rotate in the left-right direction (lateral direction) relative to the base unit 3. The blower unit 2 can also rotate in the up-down direction relative to the base unit 3. The rotation of the blower unit 2 in the left-right direction around a rotation axis that extends in the vertical direction relative to the base unit 3 is sometimes called "left-right oscillation" or "left-right oscillation". The rotation of the blower unit 2 in the up-down direction around a rotation axis that extends horizontally relative to the base unit 3 is sometimes called "up-down oscillation" or "up-down oscillation".

[0027] [Air Blower Unit 2] The air blower unit 2 is divisible into a front cover 21 and a rear grille 22 at approximately the midpoint in the front-rear direction. The air blower unit 2 has a spherical appearance when the front cover 21 and the rear grille 22 are combined. As shown in Figure 1, a front grille 25 is detachably attached to the front end of the front cover 21 (the end opposite to the rear grille 22). More specifically, the front grille 25 is detachable from the front cover 21 by rotating it in the circumferential direction and includes a plurality of spirally arranged fins 26. As a result, the air is blown out while concentrated near the center of the front grille 25, enabling highly directional airflow.

[0028] Inside the air blower unit 2 are a propeller fan, a fan motor 27 (Figure 9) that rotates the propeller fan, and an up-and-down oscillation mechanism including an up-and-down oscillation motor 61 (Figure 10). That is, the propeller fan, fan motor 27, and up-and-down oscillation mechanism are housed in the cover of the air blower unit 2 (front grille 25, front cover 21, and rear grille 22). The cover of the air blower unit 2 has an air outlet 23 (the gap between adjacent fins 26) at the front (Figure 1) and an air intake 24 at the rear. The propeller fan is connected to the output shaft of the fan motor 27 and is rotated around its axis by the fan motor 27. More specifically, the propeller fan includes a cylindrical boss and a plurality of blades provided at circumferential intervals on the outer surface of the boss, and the tip of the output shaft of the fan motor 27 is inserted into the boss. When the propeller fan rotates, air is drawn into the cover from the intake port at the rear of the blower 1, pressurized by the propeller fan, and then blown out from the outlet 23 at the front.

[0029] [Base Section 3] The base section 3 is a pedestal that includes a portion that is placed on an installation surface such as a floor, and the power cord 5 is pulled out from the rear toward the outside. As shown in Figure 1, the base section 3 includes a bottom plate 31 located on the lower side and a bottom cover 32 located above the bottom plate 31. The lower part of the bottom cover 32 has a cylindrical shape with a smaller diameter than its upper part, and this lower part is inserted into the bottom plate 31. A space is provided inside the base section 3, and components such as an operation board for controlling various operations of the blower 1, a power supply board, and a left-right oscillation mechanism 4 (Figure 2), which will be described later, are arranged in this internal space. The bottom cover 32 is rotatable in the left-right direction relative to the bottom plate 31, thereby performing the left-right oscillation operation of the blower section 2. The bottom plate 31 and the bottom cover 32 are each formed in a circular shape when viewed from above.

[0030] As shown in Figure 1, a support column 321 extending upward is formed on the upper surface of the bottom cover 32, behind the center of the circle. As shown in Figure 10, a recess is formed on the upper surface of the support column 321 into which the lower end of the arm portion 64, which will be described later, is inserted.

[0031] As shown in Figure 1, an operation button 323 is provided on the upper surface of the bottom cover 32, in front of the support column 321. The operation buttons 323 include, for example, a power button to switch the power on / off, an airflow button to adjust the airflow of the blower unit 2, an oscillation button to switch the oscillation operation of the blower unit 2, and a mode button to switch the operating mode of the blower 1. When a user operates an operation button 323, a control unit mounted on the control board detects the operation and performs various controls according to the operation.

[0032] A cylindrical large-diameter gear fixing part (not shown) is formed in the center of the bottom plate 31. This large-diameter gear fixing part is connected to the large-diameter gear 44 (Figure 2) of the left-right swivel mechanism 4, thereby fixing the large-diameter gear 44 to the bottom plate 31.

[0033] [Left-right oscillation mechanism 4] The blower 1 includes a left-right oscillation mechanism 4 that causes the blower unit 2 to oscillate left and right relative to the base unit 3 (Figure 2). In this specification, the left-right oscillation mechanism 4 may be simply referred to as the "oscillation mechanism".

[0034] Figures 2 to 6 show the left-right swivel mechanism 4. Figure 2 is a perspective view of the left-right swivel mechanism 4 from below. Figure 3 is a perspective view of the left-right swivel mechanism 4 from above. Figure 4 is a vertical cross-sectional view of the left-right swivel mechanism 4 along the vertical direction. Figure 5 is a perspective view of the left-right swivel mechanism 4 from below with the large-diameter gear 44 removed. Figure 6 is a perspective view of the left-right swivel mechanism 4 from above with the large-diameter gear 44 removed.

[0035] As shown in Figures 2 to 6, the left-right swivel mechanism 4 consists of a left-right swivel motor 41, a motor base 42, a small-diameter gear 43, and a large-diameter gear 44. The large-diameter gear 44 is positioned approximately in the center of the bottom plate 31, and the motor base 42 is fixed to the lower surface of the bottom cover 32.

[0036] The left-right oscillation motor 41 is driven when the air blower 2 oscillates left and right. The left-right oscillation motor 41 is, for example, a synchronous motor and is capable of rotational drive in both directions. This allows the air blower 2 to rotate alternately to the right and to the left.

[0037] The motor base 42 supports the left-right oscillating motor 41. As shown in Figure 4, the left-right oscillating motor 41 is positioned so that its lower surface 411 abuts against the upper surface 421 of the motor base 42. As shown in Figure 3, the left-right oscillating motor 41 includes two flange portions 412 that protrude radially outward from its lower surface 411, and these flange portions 412 are connected to the motor base 42 by fixing members such as screws.

[0038] The output shaft of the left-right oscillating motor 41 is inserted into a through hole formed in the motor base 42, and the tip of the output shaft is inserted into the central hole of the small-diameter gear 43. As a result, the left-right oscillating motor 41 and the small-diameter gear 43 are positioned with the motor base 42 in between them in the vertical direction. When the left-right oscillating motor 41 is driven, the small-diameter gear 43 connected to the output shaft of the left-right oscillating motor 41 rotates in the circumferential direction. As shown in Figure 2, multiple teeth 431 are formed on the outer circumference of the small-diameter gear 43, spaced apart from each other, along the entire circumference. The teeth 431 of the small-diameter gear 43 mesh with the teeth 441 of the large-diameter gear 44. Therefore, when the small-diameter gear 43 rotates, the large-diameter gear 44 rotates in the opposite direction to the small-diameter gear 43. The large-diameter gear 44 is rotatable relative to the motor base 42.

[0039] As shown in Figure 5, the lower part of the motor base 42 is an annular portion 424. A cylindrical through hole 425 extending vertically is formed in the center of the annular portion 424. A large-diameter gear 44 is connected to the lower surface of the annular portion 424.

[0040] As shown in Figure 4, the large-diameter gear 44 has a cylindrical shaft portion 444 extending vertically in its center. Also, as shown in Figure 5, a plurality of teeth 441 are provided on a part of the outer circumference of the large-diameter gear 44 at intervals in the circumferential direction. The teeth 441 are provided only in the area of ​​the outer circumference of the large-diameter gear 44 necessary for meshing with the small-diameter gear 43 (the part facing the small-diameter gear 43) (Figure 2). The outer diameter of the shaft portion 444 is smaller than the inner diameter of the through hole 425 of the motor base 42 and is inserted into the through hole 425 (see Figure 4). As will be described later, the shaft portion 444 is the center of the oscillation of the blower 2 by the left-right oscillation mechanism 4, so the through hole 425 is formed in a position that includes the center of the oscillation of the blower 2. As shown in Figure 4, the shaft portion 444 decreases in diameter from the bottom to the top.

[0041] As shown in FIGS. 5 and 6, the large-diameter gear 44 has a cylindrical first connecting portion 445 in which a through-hole 442 is formed, and a cylindrical second connecting portion 446 in which a through-hole 443 is formed. Both the first connecting portion 445 and the second connecting portion 446 are formed so as to project above and below the large-diameter gear 44. The through-holes 442 and 443 are formed so as to penetrate the centers of the first connecting portion 445 and the second connecting portion 446 in the vertical direction. In the through-holes 442 and 443, a first connector 451 and a second connector 452 for connecting the motor base 42 and the large-diameter gear 44 are respectively inserted.

[0042] Three through-holes 447 are formed in the large-diameter gear 44 at intervals in the circumferential direction. Connecting tools (not shown) are inserted into these three through-holes 447 from below, whereby the large-diameter gear 44 is connected to the bottom plate 31.

[0043] As shown in FIGS. 4 and 5, on the outer peripheral portion of the lower surface of the annular portion 42 of the motor base 42, an outer protruding portion 422 that protrudes downward in an annular shape toward the large-diameter gear 44 is formed. On the other hand, on the inner peripheral portion of the lower surface of the annular portion 424 of the motor base 42, an inner protruding portion 423 that protrudes downward in an annular shape toward the large-diameter gear 44 is formed. The inner protruding portion 423 is provided on the outer peripheral edge of the through-hole 425. That is, the outer protruding portion 422 is provided on the outer side in the radial direction of the motor base 42, and the inner protruding portion 423 is provided on the inner side in the radial direction of the motor base 42.

[0044] As shown in FIG. 4, the outer protruding portion 422 and the inner protruding portion 423 respectively abut on the upper surface of the large-diameter gear 44. That is, the motor base 42 contacts the large-diameter gear 44 at the outer protruding portion 422 and the inner protruding portion 423, while gaps 422a and 423a are provided between the motor base 42 and the large-diameter gear 44 in portions of the lower surface excluding the outer protruding portion 422 and the inner protruding portion 423. The motor base 42 is thus supported by the large-diameter gear 44 from the lower surface side. In this specification, the outer protruding portion 422 and the inner protruding portion 423 may be collectively referred to as "protruding portions".

[0045] As described above, the teeth 431 of the small-diameter gear 43 mesh with the teeth 441 of the large-diameter gear 44 (Figure 2). Therefore, when the small-diameter gear 43 rotates due to the drive of the left-right oscillating motor 41, the large-diameter gear 44 rotates accordingly. When the large-diameter gear 44 rotates, the motor base 42 rotates accordingly. Since the large-diameter gear 44 is connected to the bottom plate 31 and the motor base 42 is connected to the bottom cover 32, when the motor base 42 rotates, the left-right oscillating motor 41, small-diameter gear 43, bottom cover 32, support column 321, arm 64, and blower 2, all connected to the motor base 42, rotate relative to the bottom plate 31.

[0046] In this way, the rotation of the left-right oscillating motor 41 is transmitted to the motor base 42 via the small-diameter gear 43 and the large-diameter gear 44. In other words, in the blower 1 according to this embodiment, the small-diameter gear 43 and the large-diameter gear 44 function as a transmission mechanism that transmits the rotation of the left-right oscillating motor 41 to the motor base 42. Specifically, in the blower 1, the left-right oscillating mechanism 4 causes the bottom cover 32 to rotate left and right relative to the bottom plate 31, and as a result, the blower unit 2, which is connected to the bottom cover 32 via the arm portion 64, rotates relative to the bottom plate 31.

[0047] [Power Cord Holding Mechanism] Figure 7 is a perspective view of the blower 1 from below with the cap 34 removed from the bottom surface of the base 3. Figure 8 shows the cap 34 and the power cord 5.

[0048] As shown in Fig. 7, the cap 34 is a circular lid detachably provided at the center of the bottom surface of the base portion 3, that is, the bottom surface of the bottom plate 31. When the cap 34 is removed from the base portion 3, a substantially cylindrical space formed in the lower part of the bottom plate 31 is exposed. The power cord 5 is housed in this substantially cylindrical space. As shown in Figs. 7 and 1, the power cord 5 is provided so as to be drawn out from the rear of the bottom plate 31 (base portion 3) toward the outside. As shown in Fig. 7, the power cord 5 extends along a groove provided in the bottom plate 31 for holding the power cord 5 to the center of the bottom plate 31 and then extends upward therefrom. At this time, the power cord 5 passes through the through hole of the shaft portion 444 of the large-diameter gear 44 and the through hole 425 of the motor base 42.

[0049] As shown in Fig. 8, the cap 34 has three claw portions 341 on the outer periphery. The cap 34 is locked to the bottom plate 31 by the claw portions 341 engaging with the inner wall surface of the holes formed on the lower surface side of the bottom plate 31.

[0050] The cap 34 has a power cord holding portion 342 formed in an oval column shape. Two through holes 342a are formed on both sides in the longitudinal direction of the power cord holding portion 342. A shaft portion 342b is inserted into the through hole 342a from above (see Fig. 7). A convex portion 342c that extends in the longitudinal direction and protrudes upward is formed at the center of the power cord holding portion 342. The position of the power cord 5 is fixed by being arranged to pass between the shaft portion 342b and the convex portion 342c. Although the power cord 5 moves when the blower 1 swings its head in the left-right direction, the movement of the portion held by the power cord holding portion 342 can be suppressed, so that the position of the power cord 5 can be stabilized. In this way, the power cord holding portion 342 functions as a holding mechanism for the power cord 5.

[0051] In this embodiment, the cap 34 is circular in shape, but it is not limited to this, and the shape of the cap can be any shape. Also, the shape of the power cord holder 342 is not particularly limited as long as it is a shape that can hold the power cord 5, and a shape other than the shape shown in Figure 8 can be used as appropriate.

[0052] [Configuration of the intake port] Figure 9 is a view of the blower 1 from the rear. In the blower section 2, an outlet 23 is formed in the front grille 25, while an intake port 24 is formed in the rear grille 22. As shown in Figure 9, the rear grille 22 includes a rectangular first grille 222 that extends downward from the center when viewed from the rear, and a second grille 221 that is provided outside the first grille 222 so as to surround the first grille 222 and form a circular outer edge.

[0053] The second grille 221 has a frame member 221a that includes a portion extending concentrically from the center and a portion extending radially from the center, and a gap 221b is formed by the frame member 221a. The first grille 222 has a frame member 222a that has an oval-shaped gap 222b extending vertically when viewed from the rear. The first grille 222 also has a cover portion 222c on the upper and upper left sides of Figure 9 where no gap 222b is formed. The gap 222b is provided at a position that overlaps with the fan motor 27 located in the center of the air blower 2 when viewed from the rear. The gap 222b, together with the gap 221b, constitutes the intake port 24. In this way, by forming the intake port 24 at a position that overlaps with the fan motor 27 when viewed from the rear, the air drawn into the cover of the air blower 2 from the intake port 24 can easily pass around the fan motor 27, thereby enhancing the cooling effect of the fan motor 27.

[0054] [Motor cover for the up-and-down oscillating motor] Figure 10 is a diagram showing the up-and-down oscillating mechanism housed in the cover of the blower unit 2 and its surrounding configuration. As shown in Figure 10, the up-and-down oscillating mechanism of the blower 1 includes an up-and-down oscillating motor 61, a second motor cover 62, a link 63, an arm portion 64, and an up-and-down oscillating shaft portion 65.

[0055] The arm portion 64 is connected to both the left and right sides of the first motor cover 27A, which houses the fan motor 27, and holds the first motor cover 27A so that it can rotate up and down. As shown in Figure 10, the up and down oscillating motor 61 is connected to the arm portion 64 via an arc-shaped link 63. When the up and down oscillating motor 61 is driven, the first motor cover 27A oscillates up and down around the up and down oscillating shaft portion 65. One side of the up and down oscillating motor 61 is covered by the second motor cover 62. As shown in Figure 10, the second motor cover 62 has a plurality of through holes 621. This makes it easier for air flowing near the up and down oscillating motor 61 to come into contact with the up and down oscillating motor 61, thereby enhancing the cooling effect of the up and down oscillating motor 61.

[0056] The blower 1 according to an embodiment of the present invention has been described in detail above. The above embodiments are merely specific examples of the present invention, and the scope of the present invention is defined by the claims, and all modifications within the meaning and scope of equivalence to the claims are intended to be included.

[0057] [Features of the Blower] As described above, the blower 1 described in the embodiment is equipped with a left-right oscillation mechanism 4 that causes the blower unit 2 to oscillate left and right relative to the base unit 3. The left-right oscillation mechanism 4 includes a left-right oscillation motor 41, a motor base 42, and a transmission mechanism including a small-diameter gear 43 and a large-diameter gear 44. The motor base 42 has an upper surface on which the left-right oscillation motor 41 is arranged. The transmission mechanism transmits the rotation of the left-right oscillation motor 41 to the motor base 42 and supports the motor base 42 from below. By configuring the motor base 42 to be supported from below by the transmission mechanism, specifically mainly by the large-diameter gear 44, the horizontal stability of the blower unit 2 during left-right oscillation is improved, and the occurrence of rattling in the horizontal plane can be suppressed. As a result, the horizontality can be maintained even when the blower unit 2 is oscillating left and right. In addition, since there is no need to provide rails and glass balls that roll on the rails in the space within the base unit 3, the generation of abnormal noise caused by glass balls during left-right oscillation of the blower unit 2 can be suppressed.

[0058] The blower 1 has an inner protrusion 423 and an outer protrusion 422 on the lower surface of the motor base 42. These protrusions contact the transmission mechanism, while a gap is provided between the motor base 42 and the transmission mechanism (large-diameter gear 44) in the areas excluding the protrusions. This configuration reduces friction during left-right oscillation compared to a configuration where the entire lower surface of the motor base 42 contacts the transmission mechanism, such as the large-diameter gear 44 and the small-diameter gear 43, over a wide area. Furthermore, the presence of the inner protrusion 423 and the outer protrusion 422 improves the horizontal stability of the motor base 42.

[0059] As described above, since the inner protrusion 423 and the outer protrusion 422 are ring-shaped, the horizontal stability of the motor base 42 can be further improved.

[0060] Furthermore, since the motor base 42 has a through hole 425 formed in a position that includes the center of the left and right swivel, the horizontal stability of the motor base 42 is further improved.

[0061] 1...Blower 2...Air blower section 21...Front cover 22...Rear grille 23...Air outlet 24...Air intake 3...Base section 31...Bottom plate 32...Bottom cover 321...Support column section 34...Cap 341...Claw section 342...Power cord holder section 4...Left and right oscillating mechanism (oscillating mechanism) 5...Power cord 41...Left and right oscillating motor (oscillating motor) 42...Motor base 422...Outer protrusion 423...Inner protrusion 424...Ring section 425...Through hole 43...Small diameter gear 44...Large diameter gear 444...Shaft section 61...Up and down oscillating motor 62...Second motor cover (motor cover) 621...Through hole

Claims

1. A blower comprising: a blower unit; a base unit supporting the blower unit; and an oscillating mechanism disposed within the base unit for causing the blower unit to oscillate relative to the base unit, wherein the oscillating mechanism comprises: an oscillating motor; a motor base having an upper surface on which the oscillating motor is disposed; and a transmission mechanism for transmitting the rotation of the oscillating motor to the motor base, the transmission mechanism supporting the motor base from a lower surface facing the opposite side of the upper surface.

2. The lower surface of the motor base has a projection that protrudes downward toward the transmission mechanism, and the motor base is in contact with the transmission mechanism at the projection, while a gap is left between the motor base and the transmission mechanism in the portion excluding the projection. The blower according to claim 1.

3. The blower according to claim 2, wherein the protrusion includes an inner protrusion that protrudes downward toward the transmission mechanism from the radially inner side of the lower surface of the motor base, and an outer protrusion that protrudes downward toward the transmission mechanism from the radially outer side of the lower surface of the motor base.

4. The blower according to claim 2, wherein the protrusion has an annular shape.

5. The blower according to any one of claims 1 to 4, wherein the motor base has a through hole formed at a position including the center of the oscillation of the blower, and the transmission mechanism has a shaft portion inserted into the through hole.

6. The blower according to any one of claims 1 to 4, further comprising a power cord that is drawn out from the base portion to the outside, and a cap that is detachable from the base portion, wherein the cap has a holding portion for holding the power cord.

7. The blower according to any one of claims 1 to 4, wherein the blower unit includes a fan, a fan motor for rotating the fan, and a cover housing the fan and the fan motor, the cover having an air intake and an air outlet, and the air intake is formed to include a position that overlaps with the fan motor when viewed from the rear of the blower unit.

8. The blower according to any one of claims 1 to 4, further comprising: an up-and-down oscillating motor that causes the blower section to oscillate up and down relative to the base section; and a motor cover that is arranged to cover the up-and-down oscillating motor and has a plurality of holes formed in it.

Images