CN215860965U - Fan with dustproof structure - Google Patents
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- CN215860965U CN215860965U CN202122115795.9U CN202122115795U CN215860965U CN 215860965 U CN215860965 U CN 215860965U CN 202122115795 U CN202122115795 U CN 202122115795U CN 215860965 U CN215860965 U CN 215860965U
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Abstract
The utility model discloses a fan with a dustproof structure, which comprises: the base is provided with a mounting hole; the connecting cover is arranged on the base in a covering mode, an accommodating cavity is formed in one side, facing the base, of the connecting cover, a rotating shaft and dustproof blades are arranged in the accommodating cavity in a protruding mode, facing the cavity wall of the base, of the accommodating cavity, the air inlet side of the dustproof blades is close to the rotating shaft, the air outlet side of the dustproof blades is far away from the rotating shaft, and the mounting holes are in rotating fit with the rotating shaft; a plurality of flabellums, each the flabellum with the connection lid is connected, and is a plurality of the flabellum is followed the circumference interval setting in holding the chamber. According to the fan with the dustproof structure, when the dustproof blade rotates, the air in the mounting hole is sucked by the air inlet side of the dustproof blade and is sent out towards one end far away from the rotating shaft, so that dust in the mounting cavity cannot enter the mounting hole, the rotating of the rotating shaft is prevented from being influenced by the dust, and the matching stability of the rotating shaft and the mounting hole is improved.
Description
Technical Field
The utility model relates to the technical field of dust prevention of fans, in particular to a fan with a dust prevention structure.
Background
Along with scientific progress, the functions of electric appliances are more and more complex, the heat quantity generated by the electric appliances in use is higher, and in order to reduce the influence of high temperature on the electric appliances, the heat dissipation fan is widely applied to various electric appliances for heat dissipation. However, when the fan blades rotate at a high speed, the air flow is accelerated, and dust in the air easily enters the bearing along with the air flowing at the high speed, so that the phenomena of unsmooth rotation of the fan blades, reduction of the rotating speed or blockage and the like are caused, and the service life of the fan is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a fan with a dustproof structure, and aims to solve the technical problem that dust enters a rotating shaft.
In order to achieve the above object, the present invention provides a fan with a dust-proof structure, comprising:
the base is provided with a mounting hole;
the connecting cover is arranged on the base in a covering mode, an accommodating cavity is formed in one side, facing the base, of the connecting cover, a rotating shaft and dustproof blades are arranged in the accommodating cavity in a protruding mode, facing the cavity wall of the base, of the accommodating cavity, the air inlet side of the dustproof blades is close to the rotating shaft, the air outlet side of the dustproof blades is far away from the rotating shaft, and the mounting holes are in rotating fit with the rotating shaft;
a plurality of flabellums, each the flabellum with the connection lid is connected, and is a plurality of the flabellum is followed the circumference interval setting in holding the chamber.
Optionally, the dustproof blade is arranged in an arc shape, and a convex arc surface of the dustproof blade is arranged as a windward surface.
Optionally, on the axial projection of pivot, the concave cambered surface of dustproof blade closes on the one end of pivot with the first concentric circle of pivot intersects in first nodical, the concave cambered surface of dustproof blade has the process first tangent line at first nodical, the first concentric circle of pivot has the process second tangent line at first nodical, first tangent line with the angle more than or equal to 30 °, and less than or equal to 80 that the second tangent line presss from both sides.
Optionally, on the axial projection of pivot, the concave cambered surface of dustproof blade is kept away from the one end of pivot with the second concentric circle of pivot intersects in the second nodical point, the concave cambered surface of dustproof blade has the process the third tangent line of the second nodical point, the second concentric circle of pivot has the process the fourth tangent line of the second nodical point, the third tangent line with the angle that the fourth tangent line presss from both sides is more than or equal to 100 °, and less than or equal to 130 °.
Optionally, the dustproof blade is provided in plurality, and the dustproof blades are arranged at intervals along the circumferential direction of the rotating shaft.
Optionally, the number of the dust-proof blades is odd.
Optionally, the connecting cover is convexly provided with a connecting protrusion arranged along the circumferential direction of the accommodating cavity and a first dust ring connected to the connecting protrusion, the connecting protrusion is adjacent to the cavity opening of the accommodating cavity, and the first dust ring is located on one side of the connecting protrusion facing the base;
the base is further convexly provided with a dustproof protrusion, the dustproof protrusion is annularly arranged on the cavity opening of the accommodating cavity, and the end part of the first dustproof ring is radially overlapped with the end part of the dustproof protrusion in the accommodating cavity and used for preventing dust.
Optionally, a gap between the dustproof protrusion and the connecting protrusion is greater than or equal to 0.2mm and less than or equal to 0.7 mm.
Optionally, fan with dustproof construction still includes along the second dust ring that holds the accent circumference setting in chamber, the second dust ring connect in connect protruding orientation one side of base, the tip of second dust ring with dustproof bellied tip is in hold the chamber and overlap radially, the second dust ring with first dust ring interval sets up, dustproof protruding set up in first dust ring with between the second dust ring.
Optionally, the fan with the dustproof structure further comprises a bearing, the bearing is fixedly matched with the mounting hole, the rotating shaft is arranged in the bearing, and the rotating shaft is in running fit with the bearing.
According to the fan with the dustproof structure, the base is provided with the mounting hole, the side, provided with the base, of the connecting cover is provided with the accommodating cavity, the wall of the accommodating cavity, facing the side of the base, of the side of the accommodating cavity is convexly provided with the rotating shaft and the dustproof blades, the air inlet side of the dustproof blades is close to the rotating shaft, the air outlet side of the dustproof blades is far away from the rotating shaft, and the blades are arranged at intervals along the circumferential direction of the accommodating cavity. So, when the connecting cover drives each flabellum and rotates, dustproof blade follows the connecting cover and rotates, one side of dustproof blade air inlet is towards the mounting hole direction extraction air, because the mounting hole is the blind hole, air in the mounting hole can't be taken out when dustproof blade rotates, air in the mounting hole is static, the air outside the mounting hole forms relative flow with the air in the mounting hole, thereby, the dust of having avoided holding in the chamber falls into the mounting hole, cause the interference to the pivot in the mounting hole, thereby life has been promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fan with a dust-proof structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view at AA in FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is an exploded view of an embodiment of a fan with a dust-proof structure according to the present invention;
FIG. 5 is a schematic view of a connection cover of an embodiment of a fan with a dust-proof structure according to the present invention;
fig. 6 is a partial enlarged view of the point ii in fig. 5.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a fan with a dustproof structure.
In an embodiment of the present invention, as shown in fig. 1 to 6, the fan with a dust-proof structure includes:
the base comprises a base 1, wherein the base 1 is provided with a mounting hole 11;
the connecting cover 2 is arranged on the base 1 in a covering mode, an accommodating cavity 21 is formed in one side, facing the base 1, of the connecting cover 2, a rotating shaft 22 and dustproof blades 23 are convexly arranged on the wall, facing the base 1, of the accommodating cavity 21, the air inlet side of each dustproof blade 23 is close to the rotating shaft 22, the air outlet side of each dustproof blade 23 is far away from the rotating shaft 22, and the mounting holes 11 are in rotating fit with the rotating shafts 22;
a plurality of flabellum 3, each flabellum 3 with connect the lid 2 and be connected, it is a plurality of flabellum 3 follows the circumference interval setting of holding chamber 21.
In the present embodiment, the base 1 is provided with a power supply line, a wire holder, and a coil. The power cord is connected with the connection terminal electricity, and the connection terminal is used for connecting the power, and the coil passes through power cord and connection terminal connection of electric lines, is equipped with the via hole that runs through the coil in the middle of the coil, and the coil has one side of via hole and installs towards base 1, and simultaneously, the via hole encircles the periphery at mounting hole 11. So that when the dustproof blade 23 rotates, the air inlet side of the dustproof blade 23 can suck air towards the mounting hole 11. The mounting hole 11 is a blind hole so that when the dustproof blade 23 sucks air towards the mounting hole 11, air in the mounting hole 11 can be static. The mounting hole 11 needs to be greater than the setting of pivot 22 to in the pivot 22 can install in mounting hole 11, mounting hole 11 can be circular hole or rectangular hole etc. do not do specific restriction here, only need pivot 22 set up behind mounting hole 11, can reach required rotational speed requirement can. For example, when the mounting hole 11 is a circular hole, the rotating shaft 22 is a circular rotating shaft 22, and after the rotating shaft 22 is mounted in the mounting hole 11, since the rotating shaft 22 is smaller than the mounting hole 11, the rotating shaft 22 can rotate in the mounting hole 11.
The connecting cover 2 is provided with a hollow rotor which is used for matching with the coil so as to drive the rotor to rotate by the coil. The rotor is fixedly connected with the connecting cover 2, so that the connecting cover 2 is driven to rotate when the rotor rotates. Connect lid 2 lid to establish one side of base 1 and seted up and hold chamber 21, the shape that holds chamber 21 can be for circular or rectangle etc. does not do specific restriction here, only needs to hold chamber 21 and can hold the rotor and fix the rotor in holding chamber 21. Hold chamber 21 and be equipped with pivot 22 and dustproof blade 23 towards the protruding chamber wall of base 1, dustproof blade 23's shape can be arc or rectangle etc. do not do specific restriction here, when only needing dustproof blade 23 to rotate, wind is along the one side air inlet that closes on dustproof blade 23, and one side air-out towards keeping away from pivot 22 can. Dustproof blade 23 is close to mounting hole 11 setting towards one side of base 1, so that when dustproof blade 23 drafts, because be the blind hole in the mounting hole 11, air in the mounting hole 11 can't be taken out when dustproof blade 23 rotates, air in the mounting hole 11 can't flow, air outside the mounting hole 11 forms relative flow with the air in the mounting hole 11, so, when dustproof blade 23 rotates, the dust that holds in the chamber 21 can't fall into mounting hole 11, thereby, pivot 22 and mounting hole 11 pivoted stability have been promoted.
The shape of the fan blade 3 may be a rectangular parallelepiped or an arc, etc., and it is not particularly limited herein, and it is only necessary that the fan blade 3 can generate wind in a predetermined direction when rotating on the connection cover 2. The number of the fan blades 3 is preferably set to be odd so as to reduce the moment of inertia of the connecting cover 2 when the connecting cover drives the fan blades 3 to rotate, thereby reducing the generation of vibration. A plurality of flabellum 3 are fixed to be set up on connecting lid 2, and a plurality of flabellum 3 are located the circumference that holds chamber 21, and simultaneously, have the same interval between each flabellum 3, so, when a plurality of flabellums 3 rotated on connecting lid 2, the air current can produce wind-force through spaced flabellum 3.
According to the fan with the dustproof structure, the mounting hole 11 is formed in the base 1, the accommodating cavity 21 is formed in one side, covered with the base 1, of the connecting cover 2, the rotating shaft 22 and the dustproof blades 23 are arranged on the wall, facing the base 1, of one side of the accommodating cavity 21 in a protruding mode, the air inlet side of each dustproof blade 23 is close to the rotating shaft 22, the air outlet side of each dustproof blade 23 is far away from the rotating shaft 22, and the plurality of blades 3 are arranged at intervals in the circumferential direction of the accommodating cavity 21. So, when connecting lid 2 and driving each flabellum 3 and rotate, dustproof blade 23 follows connecting lid 2 and rotates, one side of dustproof blade 23 air inlet is towards 11 directions extraction air of mounting hole, because mounting hole 11 is the blind hole, air in the mounting hole 11 can't be extracted when dustproof blade 23 rotates, air in the mounting hole 11 is static, the air outside the mounting hole 11 forms relative flow with the air in the mounting hole 11, thereby, the dust of having avoided holding in the chamber 21 falls into mounting hole 11, cause the interference to pivot 22 in the mounting hole 11, thereby life has been promoted.
Specifically, as shown in fig. 6, the dust-proof blades 23 are arranged in an arc shape, and the convex arc surface of the dust-proof blades 23 is arranged as a windward surface 231. On the axial projection of pivot 22, dustproof blade's concave cambered surface 232 approaches to pivot 22 one end with pivot 22's first concentric circles intersects in first nodical, dustproof blade's concave cambered surface 232 has the process first tangent line at first nodical, pivot 22's first concentric circles has the process first nodical second tangent line, first tangent line with the angle that the second tangent line presss from both sides is more than or equal to 30 °, and less than or equal to 80 °. On the axial projection of pivot 22, the concave cambered surface 232 of dustproof blade is kept away from the one end of pivot 22 with the second concentric circle 234 of pivot 22 intersects in the second nodical point, the concave cambered surface 232 of dustproof blade has the third tangent line that passes through the second nodical point, the second concentric circle 234 of pivot 22 has the fourth tangent line that passes through the second nodical point, the third tangent line with the angle that the fourth tangent line presss from both sides is more than or equal to 100 °, and less than or equal to 130 °.
The windward side 231 is the side facing the rotation direction when the dust-proof blades 23 rotate. Dustproof blade 23 that is the arc setting needs protrusion in the inner wall of mounting hole 11 to can draw the air towards 11 directions of mounting hole when dustproof blade 23 rotates, discharge towards keeping away from 11 directions of mounting hole. In order to facilitate the extraction of dustproof blade 23, the convex cambered surface of dustproof blade 23 sets up towards the direction of rotation of connecting lid 2, so, when dustproof blade 23 rotates along with connecting lid 2, the one end that dustproof blade 23 is close pivot 22 can extract the air of mounting hole 11 direction to the one end output of keeping away from pivot 22 is faced, thereby it is static to have guaranteed the air in the mounting hole 11, the outer air flow of mounting hole 11, in order to reach and prevent that the dust from falling into mounting hole 11.
The first concentric circle is formed by projecting the rotating shaft 22 to the direction of the base 1, and the first concentric circle and the rotating shaft 22 are arranged concentrically. The included angle between the first tangent and the second tangent is greater than or equal to 30 degrees and less than or equal to 80 degrees. For example, when the included angle between the first tangent line and the second tangent line needs to be smaller than 30 °, the time of the air in the dustproof blade 23 is increased, the air drawn toward the mounting hole 11 is reduced, and the relative flow of the air flow in the mounting hole 11 and the air flow outside the mounting hole 11 is not facilitated. When the included angle between the first tangent line and the second tangent line needs to be larger than 80 degrees, the dustproof blade 23 is increased towards the windward angle, the rotating resistance of the dustproof blade 23 is increased, and then the noise generated by the rotation of the dustproof blade 23 is increased, so that the use is influenced.
The second concentric circle 234 is formed by projecting the rotating shaft 22 toward the base 1, and the second concentric circle is concentric with the rotating shaft 22. The included angle between the third tangent and the fourth tangent is greater than or equal to 100 degrees and less than or equal to 130 degrees. For example, when the included angle between the third tangent line and the fourth tangent line is required to be smaller than 100 degrees, the rotating area of the dustproof blade 23 is reduced, so that the air exhaust area is reduced, the time of the air in the dustproof blade 23 is increased, and the air intake on one side of the air intake is affected. When the included angle between the third tangent line and the fourth tangent line needs to be larger than 130 degrees, the dustproof blade 23 is increased towards the windward angle, the rotating resistance of the dustproof blade 23 is increased, and then the noise generated by the rotation of the dustproof blade 23 is increased, so that the use is influenced.
As shown in fig. 5, there are a plurality of the dust-proof blades 23, and the plurality of the dust-proof blades 23 are provided at intervals in the circumferential direction of the rotating shaft 22. The number of the dust-proof blades 23 is odd. In order to promote the ability of dust vane 23's the production wind, avoid the dust to get into mounting hole 11, dust vane 23's quantity sets up a plurality ofly, so, when a plurality of dust vane 23 rotated, a plurality of dust vane 23 induced drafted towards mounting hole 11 direction to promote dust vane 23 and produce the effect of wind. In order to reduce the unbalance amount when the connection cover 2 rotates, the number of the dust-proof blades 23 is preferably set to be odd, for example, when the number of the dust-proof blades 23 is odd, and the plurality of dust-proof blades 23 are asymmetrically arranged on the connection cover 2, so that the resonance generated when the dust-proof blades 23 rotate at a high speed is reduced, the generation of vibration is reduced, and the service life is prolonged.
As shown in fig. 2 and 3, the connecting cover 2 is convexly provided with a connecting protrusion 24 arranged along the circumferential direction of the accommodating cavity 21 and a first dust ring 25 connected to the connecting protrusion 24, the connecting protrusion 24 is adjacent to the cavity opening of the accommodating cavity 21, and the first dust ring 25 is located on one side of the connecting protrusion 24 facing the base 1; the base 1 is further convexly provided with a dustproof bulge 12, the dustproof bulge 12 is annularly arranged on the cavity opening of the accommodating cavity 21, and the end part of the first dustproof ring 25 is radially overlapped with the end part of the dustproof bulge 12 on the accommodating cavity 21 for preventing dust. The clearance between the dustproof bulge 12 and the connecting bulge 24 is more than or equal to 0.2mm and less than or equal to 0.7 mm. The fan with the dustproof structure further comprises a second dustproof ring 26 arranged along the circumferential direction of the cavity opening of the accommodating cavity 21, the second dustproof ring 26 is connected to the connecting protrusion 24 facing one side of the base 1, the end part of the second dustproof ring 26 is connected with the end part of the dustproof protrusion 12, the accommodating cavity 21 is radially overlapped, the second dustproof ring 26 is arranged at an interval with the first dustproof ring 25, and the dustproof protrusion 12 is arranged between the first dustproof ring 25 and the second dustproof ring 26.
The cross-sectional shape of the connecting projection 24 may be square or rectangular, and the like, and is not particularly limited herein, and only needs to be a carrier capable of serving as a connecting medium. The connecting protrusion 24 is fixed in the circumferential direction of the accommodating cavity 21 and is disposed near the opening of the accommodating cavity 21, so that when the connecting cover 2 covers the base 1, the connecting protrusion 24 can be close to the base 1. The first dust ring 25 is preferably arranged annularly, so that when the connection cover 2 rotates, the radial deviation of the connection ring on the connection cover 2 is reduced, the air flow generated after the connection ring is matched with the fixed protrusion is reduced, and the condition that the external air enters the accommodating cavity 21 along the gap between the first dust ring 25 and the dust protrusion 12 is avoided. Dustproof protruding 12 sets up in base 1 to the setting of accent that holds chamber 21 is located to the ring, and first dustproof ring 25 is terminal to overlap with dustproof protruding 12 is terminal radially holding chamber 21, so, when first dustproof ring 25 rotates with dustproof protruding 12, keeps apart the dust through first dustproof ring 25 and dustproof protruding 12. Meanwhile, the first dustproof ring 25 and the dustproof protrusion 12 are arranged in a close mode, so that a gap between the first dustproof ring 25 and the dustproof protrusion 12 is formed, and the dustproof effect is improved.
The clearance between the dustproof protrusion 12 and the connecting protrusion 24 is greater than or equal to 0.2mm and less than or equal to 0.7 mm. For example, when the gap between the end of the dust-proof protrusion 12 and the connecting protrusion 24 is smaller than 0.2mm, the connecting cover 2 has a certain degree of deflection during rotation, so that interference between the dust-proof protrusion 12 and the connecting protrusion 24 is caused, and the dust-proof protrusion 12 and the connecting protrusion 24 generate friction to affect the rotation of the connecting cover 2. When the gap between the end of the dust-proof protrusion 12 and the connecting protrusion 24 is larger than 0.8mm, the gap is too large, which easily causes dust to enter the accommodating cavity 21 from the gap, and thus is not favorable for dust-proof.
In addition, the clearance between the first dust ring 25 and the base 1 is greater than or equal to 0.2mm and less than or equal to 0.7 mm. For example, when the gap between the end of the first dust ring 25 and the base 1 is smaller than 0.2mm, since the connection cover 2 rotates with a certain range of deflection, the end of the first dust ring 25 is easily interfered with the base 1 due to the deflection, which causes friction between the first dust ring 25 and the base 1, thereby affecting the rotation of the connection cover 2. When the clearance between the end of the first dust ring 25 and the connecting seat is greater than 0.8mm, the clearance is too large, so that dust easily enters the accommodating cavity 21 from the clearance, and dust prevention is not facilitated.
The second dust ring 26 is preferably arranged in a ring shape, meanwhile, the first dust ring 25 and the second dust ring 26 are arranged concentrically, the first dust ring 25 and the second dust ring 26 are arranged at intervals, and the size of the interval is slightly larger than the width of the dust-proof protrusion 12, so that the dust-proof protrusion 12 can be arranged between the interval formed by the first dust ring 25 and the second dust ring 26. Set up through setting up in turn between first dust ring 25, dustproof arch 12 and the second dust ring 26, further blockked the outside air entering and held in the chamber 21, be favorable to reducing and hold the chamber 21 in the dust that accumulates. Meanwhile, the end of the second dust-proof ring 26 overlaps with the end of the dust-proof protrusion 12 in the radial direction of the accommodating chamber 21 so as to block dust from entering the accommodating chamber 21. In addition, the clearance between the second dust ring 26 and the base 1 is greater than or equal to 0.2mm and less than or equal to 0.7 mm. For example, when the gap between the end of the second dust ring 26 and the base 1 is smaller than 0.2mm, since the connection cover 2 rotates with a certain range of deflection, the end of the second dust ring 26 is easily interfered with the base 1 due to the deflection, which causes friction between the second dust ring 26 and the base 1, thereby affecting the rotation of the connection cover 2. When the clearance between the end of the second dust ring 26 and the connecting seat is greater than 0.8mm, the clearance is too large, so that dust easily enters the accommodating cavity 21 from the clearance, and dust prevention is not facilitated.
The fan with the dustproof structure further comprises a bearing, the bearing is fixedly matched with the mounting hole 11, the rotating shaft 22 is arranged in the bearing, and the rotating shaft 22 is in running fit with the bearing. The type of the bearing may be a deep groove ball roller bearing or a tapered roller bearing, etc., and is not particularly limited herein, and it is only necessary to achieve a desired rotation speed and to bear the axial force of the connecting cover 2. For example, when the type of bearing is a deep groove ball roller bearing, the deep groove ball roller bearing can bear the axial force of the connection cover 2 because the axial force of the connection cover 2 is small, and at the same time, the deep groove ball roller bearing has a small friction force because the connection cover 2 requires a high rotation speed. Therefore, when the deep groove ball roller bearing is used, the outer ring of the deep groove ball roller bearing is matched with the installation, the inner ring of the deep groove ball roller bearing is matched with the rotating shaft 22, and after the rotating shaft 22 is matched with the deep groove ball roller bearing, friction force can be reduced, and loss is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fan with a dustproof structure is characterized by comprising:
the base is provided with a mounting hole;
the connecting cover is arranged on the base in a covering mode, an accommodating cavity is formed in one side, facing the base, of the connecting cover, a rotating shaft and dustproof blades are arranged in the accommodating cavity in a protruding mode, facing the cavity wall of the base, of the accommodating cavity, the air inlet side of the dustproof blades is close to the rotating shaft, the air outlet side of the dustproof blades is far away from the rotating shaft, and the mounting holes are in rotating fit with the rotating shaft;
a plurality of flabellums, each the flabellum with the connection lid is connected, and is a plurality of the flabellum is followed the circumference interval setting in holding the chamber.
2. The fan with dustproof structure as claimed in claim 1, wherein said dustproof blades are arranged in an arc shape, and a convex arc surface of said dustproof blades is arranged to face the wind.
3. The fan with a dust-proof structure as claimed in claim 2, wherein, in the axial projection of the rotating shaft, one end of the concave arc surface of the dust-proof blade adjacent to the rotating shaft intersects with a first concentric circle of the rotating shaft at a first intersection point, the concave arc surface of the dust-proof blade has a first tangent line passing through the first intersection point, the first concentric circle of the rotating shaft has a second tangent line passing through the first intersection point, and an included angle between the first tangent line and the second tangent line is greater than or equal to 30 ° and less than or equal to 80 °.
4. The fan with a dust-proof structure as claimed in claim 2, wherein, in the axial projection of the rotating shaft, an end of the concave arc surface of the dust-proof blade away from the rotating shaft intersects with a second concentric circle of the rotating shaft at a second intersection point, the concave arc surface of the dust-proof blade has a third tangent line passing through the second intersection point, the second concentric circle of the rotating shaft has a fourth tangent line passing through the second intersection point, and an included angle between the third tangent line and the fourth tangent line is greater than or equal to 100 ° and less than or equal to 130 °.
5. The fan with a dustproof structure according to any one of claims 1 to 4, wherein the number of the dustproof blades is plural, and the plural dustproof blades are arranged at intervals in a circumferential direction of the rotating shaft.
6. The fan with a dustproof structure according to any one of claims 1 to 4, wherein the number of the dustproof blades is provided in an odd number.
7. The fan with the dustproof structure according to any one of claims 1 to 4, wherein the connection cover is convexly provided with a connection protrusion arranged along a circumferential direction of the accommodation cavity and a first dustproof ring connected to the connection protrusion, the connection protrusion is adjacent to a cavity opening of the accommodation cavity, and the first dustproof ring is located on a side of the connection protrusion facing the base;
the base is further convexly provided with a dustproof protrusion, the dustproof protrusion is annularly arranged on the cavity opening of the accommodating cavity, and the end part of the first dustproof ring is radially overlapped with the end part of the dustproof protrusion in the accommodating cavity and used for preventing dust.
8. The fan with a dustproof structure according to claim 7, wherein a gap between the dustproof protrusion and the connection protrusion is 0.2mm or more and 0.7mm or less.
9. The fan with the dustproof structure according to claim 7, further comprising a second dustproof ring circumferentially disposed along the opening of the receiving cavity, wherein the second dustproof ring is connected to a side of the connecting protrusion facing the base, an end of the second dustproof ring radially overlaps with an end of the dustproof protrusion in the receiving cavity, the second dustproof ring is spaced apart from the first dustproof ring, and the dustproof protrusion is disposed between the first dustproof ring and the second dustproof ring.
10. The fan with the dustproof structure according to any one of claims 1 to 4, wherein the fan with the dustproof structure further comprises a bearing, the bearing is fixedly engaged with the mounting hole, the rotating shaft is disposed in the bearing, and the rotating shaft is rotatably engaged with the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122115795.9U CN215860965U (en) | 2021-09-03 | 2021-09-03 | Fan with dustproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122115795.9U CN215860965U (en) | 2021-09-03 | 2021-09-03 | Fan with dustproof structure |
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| Publication Number | Publication Date |
|---|---|
| CN215860965U true CN215860965U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122115795.9U Active CN215860965U (en) | 2021-09-03 | 2021-09-03 | Fan with dustproof structure |
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| CN (1) | CN215860965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329140A (en) * | 2023-10-17 | 2024-01-02 | 肇庆晟辉电子科技有限公司 | Fan blade with dustproof structure and fan |
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2021
- 2021-09-03 CN CN202122115795.9U patent/CN215860965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329140A (en) * | 2023-10-17 | 2024-01-02 | 肇庆晟辉电子科技有限公司 | Fan blade with dustproof structure and fan |
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