Support base

Abstract

A support base (100) for supporting a fan (200). The support base (100) comprises: a housing (10); a rotating body (20) arranged on an upper side of the interior of the housing (10) to drive the fan (200) placed above the rotating body (20) to rotate, the rotating body (20) comprising a fan rotating portion (21) arranged on an upper side of the housing (10); and a motor arranged in the housing (10). A plurality of convex portions are provided between the fan rotating portion (21) and a top surface of the housing (10), the fan rotating portion is divided into a first region (101) and a second region (102), and the convex portions comprise at least first convex portions (51) arranged on the second region (102). By means of providing the first convex portions (51) in the second region (102), when the fan rotating portion (21) is subjected to vibration and about to tip from the first region (101) to the second region (102), the rotating body (20) first comes into contact with the first convex portions (51) on the second region (102), preventing the fan rotating portion (21) from greatly tipping from the first region (101) to the second region (102), thereby preventing the fan (200) from nodding.

Description

Support seat Technical Field

[0001] The present disclosure relates to the technical field of electrical equipment, and more particularly, to a support base. Background Art

[0002] In the prior art fan support base, a fan is placed on the support base, and the fan placed on the support base can shake its head through the rotating structure of the support base.

[0003] To achieve this oscillating motion, a stopper is placed along the gear's path. When the gear collides with the stopper, it reverses its direction of rotation until it hits the stopper at the other end. This cyclical rotation of the gear drives the fan's rotating mechanism back and forth. However, when the gear collides with the stopper, the rotating mechanism vibrates due to the clearance between the components, causing the fan to nod, meaning it tips over.

[0004] Summary of the Invention

[0005] In order to solve the above problem, the present invention provides a support base that prevents the fan from tilting to one side due to vibration.

[0006] The present invention proposes a support base for supporting a fan, and the support base includes: a shell; a rotating body, which is arranged on the upper side of the shell and drives the fan placed above the rotating body to rotate, and the rotating body includes a fan rotating part, which is arranged on the upper side of the shell and is used to support the fan; a motor, which is arranged in the shell and drives the rotation of the rotating body; and also includes: a convex part, a plurality of which are provided between the fan rotating part and the top surface of the shell, wherein the fan rotating part is divided into a first area and a second area, and the convex part at least includes: a first convex part, and the first convex part is arranged on the second area.

[0007] According to the support base of the present application, by setting a first protrusion in the second area, when the fan rotating part is vibrated and is ready to tip over from the first area to the second area, the rotating body will first contact the first protrusion on the second area, preventing the fan rotating part from tipping over significantly from the first area to the second area, thereby preventing the fan from nodding.

[0008] Furthermore, the convex portion further includes: a second convex portion, the second convex portion is arranged on the first area, and the height of the first convex portion is higher than the height of the second convex portion.

[0009] Furthermore, the rotating body also includes: a second gear, which is placed in the shell; the second gear includes: a tooth portion and a base circle portion, the tooth portion is arranged on the base circle portion and surrounds a part of the outer circumference of the base circle portion, the first area is the side close to the tooth portion of the second gear, and the second area is the side away from the tooth portion of the second gear.

[0010] Furthermore, a limit block is provided on the shell, with the vertical surface a where the limit block contacts the second gear as the boundary, the first area is the side close to the tooth portion of the second gear, and the second area is the side away from the tooth portion of the second gear.

[0011] Furthermore, the second area includes: area A and area B. Taking the vertical surface a where the limit block contacts the second gear as the starting point, rotate 45° to 90° toward the second area to obtain area A. Starting from the surface b where the boundary between area A and area B is located, continue to rotate 45° to 90° to obtain area B. The first convex portion includes convex portion A and convex portion B. The convex portion A is arranged in the area A, and the convex portion B is arranged in the area B. The angles between the surface d connecting the convex portion A and the center of the fan rotating part and the surface e connecting the convex portion B and the center of the fan rotating part are 45° to 90°.

[0012] Furthermore, an angle between a surface d connecting the convex portion A and the center of the fan rotating portion and a surface e connecting the convex portion B and the center of the fan rotating portion is 72°.

[0013] Furthermore, the angle between the surface d and the surface b is 36°, and the angle between the surface e and the surface b is 36°.

[0014] Furthermore, the number of the second convex portions is greater than the number of the first convex portions.

[0015] Furthermore, the first convex portion and the second convex portion are supporting convex portions or oil-collecting convex portions.

[0016] Furthermore, the first convex portion is an oil-collecting convex portion, and the height of the oil-collecting convex portion is higher than the height of the supporting convex portion.

[0017] Furthermore, the oil-collecting protrusion is arranged between the two supporting protrusions.

[0018] Furthermore, the fan rotating part includes: a rotating disk fixed on the surface of the rotating body facing the housing, and the protrusion is arranged on the rotating disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the cooperation between a support base and a fan in the prior art;

[0020] FIG2 is a cross-sectional view of a support base according to an embodiment of the present invention;

[0021] FIG3 is a schematic diagram of the bottom surface of a rotating disk according to an embodiment of the present invention;

[0022] FIG4 is a partial enlarged view of the bottom surface of the rotating disk according to one embodiment of the present invention;

[0023] FIG5A is a schematic diagram illustrating a collision between a second gear and one end of a limiting block according to an embodiment of the present invention;

[0024] FIG5B is a schematic diagram of regions and angles divided according to the embodiment of FIG5A;

[0025] 6A is a schematic diagram illustrating a collision between the second gear and the other end of the limiting block according to an embodiment of the present invention;

[0026] FIG. 6B is a schematic diagram of regions and angles divided according to the embodiment of FIG. 6A .

[0027] [Reference Symbols] Support base 100, housing 10, first area 101, second area 102, area A 103, area B 104, rotor 20, fan rotor 21, rotating disk 211, supporting tray 212, auxiliary disk 22, supporting protrusion 31, oil collecting protrusion 32, inner peripheral side baffle 321, outer peripheral side baffle 322, oil channel 323, inner protrusion 324, outer protrusion 325, oil collecting port 301, second gear 23, tooth portion 231, base circle portion 232, first protrusion 51, second protrusion 52, limit block 60, fan 200, grease 300. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. In addition, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The terms "first," "second," etc., used herein are for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] To clearly illustrate the technical content and effects of the present disclosure, the present disclosure will be described in detail below with reference to the specific embodiments and the accompanying drawings. In addition, the following embodiments are only one of the specific examples of the present disclosure and do not limit the technical scope of the present disclosure.

[0031] In the accompanying drawings, the second description of the same symbol for the same component and the description of components not directly related to the present disclosure will be omitted or simplified. In the following description, directional terms such as up, down, left, right, above, and below are all described based on the installation state of the support base in the present disclosure.

[0032] As shown in Figure 1, this embodiment relates to a support base 100 for an air supply device or for supporting a fan 200. The fan 200 can be placed on top of the support base 100 at will, and the lead wire is used to provide power to the fan 200 to achieve the air supply effect.

[0033] The support base 100 includes a housing 10 , a motor, a rotating body 20 , and a control unit.

[0034] The housing 10 is a cylindrical structure with an opening at the top, and the rotor 20 is positioned at the opening. The bottom surface of the housing 10 is larger than the top surface. From the front cross-sectional view of the support base 100 ( FIG. 2 ), the housing 10 gradually slopes inward from the bottom to the top, resulting in a truncated cone-shaped exterior. In some optional embodiments, the bottom surface of the housing 10 can be not only circular but also other suitable shapes.

[0035] The housing 10 includes a stopper 60. Stopper 60 is located within the housing 10, along the trajectory of the second gear 23's rotation. When the second gear 23 rotates clockwise until it collides with one end of the stopper 60, it changes direction and rotates counterclockwise. When it collides with the other end of the stopper 60, it changes direction again and rotates clockwise. This rotation cycle continues, driving the fan rotor 21 in a reciprocating motion.

[0036] The motor is electrically connected to the control unit and is disposed in the housing 10 to drive the rotation of the rotating body 20. In this embodiment, the motor can be a stepping motor.

[0037] The rotating body 20 is disposed on the upper side of the housing 10 , and when the rotating body 20 rotates, it can drive the fan 200 placed above the rotating body 20 to rotate.

[0038] The rotor 20 includes a gear, an auxiliary plate 22 and a fan rotor 21 .

[0039] The gears include a first gear connected to the rotating shaft of the motor, and a second gear 23 placed transversely in the housing 10 . The second gear 23 is engaged with the first gear, and the rotation of the first gear drives the second gear 23 to rotate.

[0040] The second gear 23 includes: a base circular portion 232, an opening, and a tooth portion 231. The base circular portion 232 is a circular hollow shape, and an opening is provided in the middle of the base circular portion 232. The lead wire can pass through the opening and be fixed to the second gear 23. The tooth portion 231 is provided on the outer circumference of the base circular portion 232, and the tooth portion 231 is engaged with the first gear. In this embodiment, referring to Figures 5A and 6A, the tooth portion 231 does not surround the entire outer circumference of the base circular portion 232, but is provided on a portion of the outer circumference of the base circular portion 232, that is, the portion of the second gear 23 that contacts and engages with the first gear during rotation, and the portion of the second gear 23 where the tooth portion 231 is not provided is exposed from the edge of the base circular portion 232.

[0041] The auxiliary disk 22 is fixed to the top surface of the housing 10, facing the rotating disk 211. In this embodiment, the auxiliary disk 22 is a circular, hollow ring, secured to the top surface of the housing 10 via a snap-fit ​​mechanism. In other embodiments, the auxiliary disk 22 may be integrally formed with the housing 10. For example, the auxiliary disk 22 may be the bottom surface of the housing 10 facing the rotating disk 211, described later.

[0042] The fan rotating part 21 is engaged with the housing 10 through the shaft wheel. One end of the fan rotating part 21 is fixedly connected to the second gear 23 through the opening of the housing 10. When the second gear 23 rotates, it drives the fan 200 placed on the upper side of the fan rotating part 21 to rotate.

[0043] The fan rotating portion 21 includes a rotating disk 211 and a receiving tray 212 .

[0044] The supporting tray 212 is in a micro-funnel shape and is used to support the fan 200 . The supporting tray 212 is disposed at the top of the fan rotating portion 21 .

[0045] The rotating disk 211 is disposed above the auxiliary disk 22. In this embodiment, the rotating disk 211 is a circular, hollow ring, secured to the bottom of the tray 212 via a snap-fit ​​mechanism. In other embodiments, the rotating disk 211 can be integrally formed with the tray 212, for example, the rotating disk 211 can be the bottom surface of the tray 212. As the shaft wheel rotates, the rotating disk 211 and the tray 212 rotate together, thereby achieving relative motion between the auxiliary disk 22 and the rotating disk 211.

[0046] The wall surface of the rotating disk 211 facing the auxiliary disk 22 is provided with a protrusion that protrudes toward the auxiliary disk 22. Specifically, the protrusion is disposed between the fan rotating portion 21 and the top surface of the housing 10. Specifically, in this embodiment, the protrusion is located between the auxiliary disk 22 and the rotating disk 211 and is disposed on the bottom surface of the rotating disk 211. The protrusion includes a first protrusion 51, or may include both a first protrusion 51 and a second protrusion 52. When both the first protrusion 51 and the second protrusion 52 are included, the protrusion height of the first protrusion 51 is higher than the protrusion height of the second protrusion 52, that is, the second protrusion 52 is shorter than the first protrusion 51. In this embodiment, the number of second protrusions 52 exceeds the number of first protrusions 51. The second protrusions 52 can be either the support protrusions 31 or the oil-collecting protrusions 32 described later. The first protrusions 51 can be either the support protrusions 31 or the oil-collecting protrusions 32 described later. In this embodiment, a portion of the second protrusion 52 serves as the supporting protrusion 31, and another portion serves as the oil collecting protrusion 32. The first protrusion 51 serves as the oil collecting protrusion 32. In this embodiment, there are at least two first protrusions 51. For ease of explanation, the two first protrusions 51 are respectively named protrusion A and protrusion B.

[0047] The support protrusions 31 are used to support the fan rotor 21, ensuring a stable installation of the fan rotor 21 on the housing 10 and reducing any shaking of the fan rotor 21. The support protrusions 31 include at least a first support protrusion 31 and a second support protrusion 31. In this embodiment, there are ten support protrusions 31, evenly spaced between the fan rotor 21 and the top surface of the housing 10. In other embodiments, the support protrusions 31 may be unequally spaced.

[0048] Specifically, the support protrusion 31 of this embodiment is disposed on the wall surface of the rotating disk 211 facing the auxiliary disk 22, that is, the support protrusion 31 is disposed on the bottom surface of the rotating disk 211 (see FIG3 ), protruding from the rotating disk 211 toward the auxiliary disk 22. In other embodiments, the support protrusion 31 may be disposed on the wall surface of the auxiliary disk 22 facing the rotating disk 211, protruding from the auxiliary disk 22 toward the rotating disk 211.

[0049] The oil-collecting protrusions 32 are disposed between the first and second support protrusions 31. As shown in FIG4 , the number of support protrusions 31 exceeds the number of oil-collecting protrusions 32. In this embodiment, there are only nine oil-collecting protrusions 32, which are not evenly spaced. In other embodiments, there may be ten oil-collecting protrusions 32, evenly spaced between the fan rotor 21 and the top surface of the housing 10.

[0050] In this embodiment, the oil-collecting protrusion 32 is disposed on the wall of the rotating disk 211 facing the auxiliary disk 22, protruding from the rotating disk 211 toward the auxiliary disk 22. The height of the oil-collecting protrusion 32 is not less than the height of the supporting protrusion 31; that is, the height of the oil-collecting protrusion 32 must be equal to or higher than the height of the supporting protrusion 31. This ensures that the oil-collecting protrusion 32 can scrape the grease 300. The oil-collecting protrusion 32 and the supporting protrusion 31 are disposed on the same surface. In this embodiment, the oil-collecting protrusion 32 and the supporting protrusion 31 are disposed on the wall of the rotating disk 211 facing the auxiliary disk 22, that is, the oil-collecting protrusion 32 is disposed on the bottom surface of the rotating disk 211. In other embodiments, the oil-collecting protrusion 32 and the supporting protrusion 31 may be disposed on the wall of the auxiliary disk 22 facing the rotating disk 211.

[0051] The oil collecting protrusion 32 includes an inner peripheral side retaining wall 321 , an outer peripheral side retaining wall 322 , and an oil passage 323 .

[0052] Inner circumferential retaining wall 321 is positioned on the inner side of the fan rotor 21, closer to the center than outer circumferential retaining wall 322. Inner circumferential retaining wall 321 has an inner protrusion 324 that protrudes outward, meaning that inner circumferential retaining wall 321 protrudes toward the oil passage 323, described later. In this embodiment, inner protrusion 324 is positioned in the middle of inner circumferential retaining wall 321, resulting in a shape with a protruding center and tapering ends.

[0053] The outer circumferential retaining wall 322 is disposed on the outer circumference of the fan rotor 21, further from the center of the fan rotor 21 than the inner circumferential retaining wall 321, and is disposed outside the inner circumferential retaining wall 321. The outer circumferential retaining wall 322 is provided with an outer protrusion 325 that protrudes inward. The outer circumferential retaining wall 322 is provided with an outer protrusion 325 that protrudes inward, that is, the outer circumferential retaining wall 322 protrudes toward the oil passage 323, which will be described later. In this embodiment, the outer protrusion 325 is disposed opposite the inner protrusion 324, that is, the outer protrusion 325 is also disposed in the middle of the outer circumferential retaining wall 322, resulting in the outer circumferential retaining wall 322 having a protruding middle portion and a flattened end.

[0054] The oil passage 323 is a passage for grease 300 disposed between the inner and outer retaining walls 321 and 322. More specifically, it is a passage for grease 300 disposed between the inner and outer protrusions 324 and 325. In this embodiment, the inner retaining wall 321 protrudes toward the oil passage 323 to form the inner protrusion 324, while the outer retaining wall 322 protrudes toward the oil passage 323 relative to the inner retaining wall 321 to form the outer protrusion 325. The inner and outer protrusions 324 and 325 make the width of the oil passage 323 smaller in the middle than at the ends, giving the oil passage 323 a trumpet-shaped shape, wider at both ends and narrower in the middle.

[0055] The oil passage 323 includes an oil collecting port 301 .

[0056] The oil collecting ports 301 are provided at the ends of the oil collecting protrusion 32, namely, at the ends of the inner circumferential baffle 321 and the ends of the outer circumferential baffle 322 opposite the inner circumferential baffle 321. The ports are formed by the ends of the inner circumferential baffle 321 and the outer circumferential baffle 322. In this embodiment, the oil collecting ports 301 are provided at both ends of the oil passage 323. Grease 300 enters the oil passage 323 through the oil collecting port 301 at one end and then flows out through the oil collecting port 301 at the other end of the oil passage 323.

[0057] According to one embodiment of the present application, the width of at least one of the two oil collecting ports 301 is greater than the thickness of the supporting protrusion 31 , that is, the distance between the end of the inner peripheral side retaining wall 321 and the end of the outer peripheral side retaining wall 322 is greater than the thickness of the supporting protrusion 31 .

[0058] Specifically, in one embodiment, the width of one of the two oil collecting ports 301 is greater than the thickness of the support protrusion 31. The oil collecting ports 301 with a width greater than the thickness of the support protrusion 31 are located at the upstream ends of the oil passage 323 in the rotational direction of the fan rotor 21, i.e., at the ends where the grease 300 enters the oil passage 323. In another embodiment, the fan 200 rotates 120° clockwise and then 120° counterclockwise. Therefore, the width of the oil collecting ports 301 at both ends of the oil passage 323 is greater than the thickness of the support protrusion 31.

[0059] In one embodiment, the fan rotating portion 21, which is located perpendicular to the second gear 23 and is located on a plane a, is divided into a first region 101 and a second region 102, with the plane a passing through the center of the fan rotating portion 21. The fan rotating portion 21 is divided into two halves. The first region 101 is located on the side closest to the teeth 231, i.e., the projection of the first region 101 is on the side of the second gear 231. The second region 102 is located on the other side away from the teeth 231, i.e., the projection of the second region 102 is on the side of the second gear 23 that is substantially free of teeth 231. As shown in Figures 5A and 6A, Figure 5A shows the second gear 23 hitting the limit block 60 for the first time, with the vertical surface a where one end of the limit block 60 contacts the second gear 23 as the boundary, the left side is the first area 101, and the right side is the second area 102; Figure 6A shows the second gear 23 rotating 120° in the opposite direction after hitting the limit block 60 for the first time, and hitting the limit block 60 for the second time, with the vertical surface a where the other end of the limit block 60 contacts the second gear 23 as the boundary, the right side is the first area 101, and the left side is the second area 102.

[0060] Furthermore, the second area 102 includes: area A 103 and area B 104 .

[0061] Region A 103 starts from the vertical surface a where the limit block 60 contacts the second gear 23 and is rotated 45° to 90° toward the second region 102. In this embodiment, region A 103 starts from the vertical surface a where the limit block 60 contacts the second gear 23 and is rotated 90° toward the second region 102 to reach the surface b where region A 103 and region B 104 intersect. Surface b passes through the center of the fan rotating portion 21.

[0062] Region B 104 is rotated 45° to 90° starting from the surface b where region A 103 and region B 104 intersect. In this embodiment, region B 104 is rotated 90° starting from the surface b where region A 103 and region B 104 intersect.

[0063] Among them, the convex portion A is set in area A 103, the convex portion B is set in area B 104, the surface connecting the convex portion A and the center of the fan rotating portion 21 is surface d, the surface connecting the convex portion B and the center of the fan rotating portion 21 is surface e, and the angle between surface d and surface e is 45° to 90°.

[0064] According to one embodiment of the present application, as shown in Figures 5B and 6B, area A 103 of this embodiment is based on the vertical surface a where the limit block 60 contacts the second gear 23, and is rotated 90° toward the second area 102; area B 104 is based on the surface b that forms a 90° angle with the surface a, and is further rotated 90° toward the second area 102.

[0065] Preferably, the angle is 72°. Specifically, referring to Figures 6A and 6B, the angle between the surface d connecting the protrusion A with the center of the fan rotor 21 and the surface b at the junction of region A 103 and region B 104 is 36°, and the angle between the surface e connecting the protrusion B with the center of the fan rotor 21 and the surface b at the junction of region A 103 and region B 104 is 36°.

[0066] The line connecting the convex portion A and the convex portion B is surface c. It should be noted that since the convex portion A is located in region A 103 and the convex portion B is located in region B 104, and region A 103 and region B 104 are both within the second region 102, it is equivalent to the convex portion A and the convex portion B being located on the same side away from the tooth portion 231. Therefore, surface c does not necessarily pass through the center of the circle. Surface c will form a certain angle with surface a passing through the center of the circle, or the two surfaces will be parallel to each other, that is, surface c will be at a certain distance from surface a.

[0067] According to one embodiment of the present application, the straight-line distance between the surface c where the line connecting the protrusion A and the protrusion B is located and the surface a in the vertical direction where the surface where the limit block 60 contacts the second gear 23 is located is negatively correlated with the degree of tilting of the fan rotating part 21. In other words, the greater the distance between surface c and surface a, the more stable the fan rotating part 21 tilts, and the smaller the amplitude of the nodding. For example, when surface c is parallel to surface a, the greater the straight-line distance between the two, the more stable the fan rotating part 21 tilts; for another example, when surface c and surface a have a certain angle, the greater the straight-line distance between the protrusion A and surface a, or the protrusion B and surface a, that is, the greater the angle between surface c and surface a, the more stable the fan rotating part 21 tilts.

[0068] When the air supply device is activated, air is drawn in through the air intake of fan 200, forming an airflow within fan 200 before being blown out. Fan 200 can be used detached from support base 100 or mounted on support base 100. When mounted on support base 100, the motor within support base 100 drives rotor 20 to rotate, causing fan 200, mounted on support base 100, to rotate along with rotor 20, thereby achieving the oscillating motion of fan 200.

[0069] When the second gear 23 rotates clockwise until it collides with one end of the stop block 60, the second gear 23 changes its original rotation direction to counterclockwise until it collides with the other end of the stop block 60, at which point it changes its rotation direction to clockwise again. During this rotation process, the second gear 23 collides with the stop block 60 twice. Specifically, the side of the second gear 23 near the tooth portion 231 rotates at high speed toward the stop block 60 and collides with the stop block 60. This generates a force from the tooth portion 231 toward the stop block 60. This force causes the fan rotor 21, which has a clearance between it and the second gear 23, to vibrate, causing the fan rotor 21 to tilt from the first area 101 to the second area 102.

[0070] Therefore, in one embodiment, a first protrusion 51 is provided in the second region 102. That is, when the fan rotor 21 is vibrated and about to fall, the rotor 20 first contacts the first protrusion 51, preventing the fan rotor 21 from significantly falling from the first region 101 to the second region 102, thereby preventing the fan 200 from nodding. In another embodiment, the first protrusion 51 is provided in the second region 102, while the second protrusion 52 is also provided in the first region 101. To prevent the fan rotor 21 from significantly falling from the first region 101 to the second region 102, the first protrusion 51 in the second region 102 is higher than the second protrusion 52 in the first region 101, thereby preventing the fan 200 from nodding.

[0071] Furthermore, to reduce the extent of the fan rotor 21's tilt, a convex portion A and a convex portion B are provided in regions A 103 and B 104, respectively. The greater the linear distance between surface c, where the line connecting convex portions A and convex portions B lies, and surface a, in the vertical direction, where the surface of the stop block 60 in contact with the second gear 23 lies, and the larger the area formed between surface c, where the line connecting convex portions A and convex portions B lies, and surface a, in the vertical direction, where the surface of the stop block 60 in contact with the second gear 23 lies, the smoother the fan rotor 21 tilts, and the smaller the nodding extent. Preferably, in this embodiment, the angle between surface d connecting convex portion A and the center of the fan rotor 21 and surface b, where regions A 103 and B 104 intersect, is 36°, and the angle between surface e connecting convex portion B and the center of the fan rotor 21 and surface b, where regions A 103 and B 104 intersect, is also 36°. In this case, the nodding extent is barely perceptible to the naked eye. In other embodiments, the closer the distance between the protrusion A and the protrusion B, the more stable the fan rotating part 21 tilts. It can be understood that the smaller the angle between the surface d where the protrusion A is located and the surface b, and the smaller the angle between the surface e where the protrusion B is located and the surface b, that is, the angle between the surface d and the surface b, and the angle between the surface e and the surface b are both less than 36°, or even close to 0, the more stable the fan rotating part 21 tilts.

[0072] During the rotation of the fan rotating portion 21, the rotating disk 211 and the auxiliary disk 22 rotate relative to each other. In this embodiment, the auxiliary disk 22 is coated with grease 300 on the side facing the rotating disk 211. The grease 300 in this embodiment is lubricating. In other embodiments, the grease 300 may also be lubricating grease such as engine oil or silicone oil.

[0073] When the fan rotor 21 rotates, the grease 300 encounters the first support protrusion 31 and is separated to the two sides. That is, the grease 300 forms two oil paths along the wall of the first support protrusion 31. After passing the first support protrusion 31, the grease 300 moves toward the second support protrusion 31. Because the oil collecting protrusion 32 is located between the first and second support protrusions 31, the grease 300 will encounter the oil collecting protrusion 32 after leaving the first support protrusion 31, and the oil collecting protrusion 32 can collect the grease 300. That is, since the width of the oil collecting port 301 of the oil collecting protrusion 32 near the first supporting protrusion 31 is greater than the thickness of the first supporting protrusion 31, the two oil paths formed along the wall of the first supporting protrusion 31 can enter the oil channel 323 of the oil collecting protrusion 32 from the oil collecting port 301. When the two oil paths enter the middle of the oil channel 323, they converge into one oil path in the oil channel 323, and then leave the oil collecting protrusion 32 from the oil collecting port 301 at the other end, that is, the oil collecting port 301 near the second supporting protrusion 31.

[0074] After passing through the oil-collecting protrusion 32, the grease 300 is pushed back onto its original path. The oil-collecting protrusion 32 keeps the grease 300 on its original path, ensuring that grease 300 is always present in the center between the auxiliary disk 22 and the rotating disk 211. Furthermore, the grease 300 maintains fluid motion during rotation, activating the grease 300 and preventing it from hardening and clumping. The grease 300 flows smoothly between the auxiliary disk 22 and the rotating disk 211, reducing relative friction and preventing vibration and noise caused by excessive friction during relative motion.

[0075] So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0076] It should be noted that any implementations not shown or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the above definitions of the various components are not limited to the specific structures and shapes described in the embodiments, and can be easily modified or replaced by those skilled in the art.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A support base for supporting a fan, the support base comprising: A housing, wherein a limit block is provided on the housing; A rotating body, arranged on the upper side of the housing, driving a fan placed above the rotating body to rotate, the rotating body comprising a fan rotating part, the fan rotating part being arranged on the upper side of the housing and used to support the fan; A motor, disposed in the housing, driving the rotating body to rotate; It is characterized by further comprising: A plurality of convex parts are provided between the fan rotating part and the top surface of the housing, The fan rotating part is divided into a first area and a second area, and the convex part at least includes: a first convex part, and the first convex part is arranged on the second area.

2. The support seat according to claim 1, characterized in that: The convex portion further comprises: a second convex portion, the second convex portion being arranged on the first region, The height of the first protrusion is higher than the height of the second protrusion.

3. The support seat according to claim 2, characterized in that: The rotating body also includes: a second gear, the second gear being disposed in the housing; The second gear includes: a tooth portion and a base circle portion, wherein the tooth portion is provided on the base circle portion and surrounds a portion of the outer circumference of the base circle portion. The first region is a side close to the tooth portion of the second gear, and the second region is a side away from the tooth portion of the second gear.

4. The support seat according to claim 3, characterized in that: The housing is provided with a limit block, with the vertical surface a where the limit block contacts the second gear as the boundary. The first region is a side close to the tooth portion of the second gear, and the second region is a side away from the tooth portion of the second gear.

5. The support seat according to claim 4, characterized in that: The second area includes: area A and area B, Taking the vertical surface a where the limit block contacts the second gear as the starting point, rotate 45° to 90° in the direction of the second area to form area A. Starting from the surface b where the area A and the area B meet, the area B is obtained by rotating 45° to 90°. The first convex portion includes a convex portion A and a convex portion B, the convex portion A is arranged in the area A, the convex portion B is arranged in the area B, and the angle between the surface d connecting the convex portion A and the center of the fan rotating part and the surface e connecting the convex portion B and the center of the fan rotating part is 45° to 90°.

6. The support seat according to claim 5, characterized in that: An angle between a surface d connecting the convex portion A and the center of the fan rotating portion and a surface e connecting the convex portion B and the center of the fan rotating portion is 72°.

7. The support seat according to claim 6, characterized in that: The included angle between the surface d and the surface b is 36°, and the included angle between the surface e and the surface b is 36°.

8. The support seat according to claim 2, characterized in that: The number of the second protrusions is greater than the number of the first protrusions.

9. The support seat according to claim 2, characterized in that: The first protrusion and the second protrusion are supporting protrusions or oil collecting protrusions to support the fan rotating part.

10. The support seat according to claim 9, characterized in that: The first convex portion is an oil collecting convex portion.

11. The support seat according to claim 10, characterized in that: The oil collecting protrusion is arranged between the two supporting protrusions.

12. The support seat according to claim 1, characterized in that: The fan rotating part comprises: A rotating disk is fixed on the surface of the rotating body facing the housing, The convex portion is arranged on the rotating disk.

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