CN216111380U - Fan with cooling device - Google Patents

Abstract

The utility model provides a fan, which comprises an air inlet base, an air outlet part, a fan switch and a controller, wherein the air inlet base comprises an air inlet shell, a driving component and a swinging blade component; the air outlet part is communicated with the air inlet shell; the fan switch is used for triggering an opening signal and a closing signal; the controller is electrically connected with the driving assembly and the fan switch, is used for controlling the driving assembly to drive the swing blade assembly to rotate according to the opening signal so as to at least partially expose the air inlet, and is also used for controlling the driving assembly to drive the swing blade assembly to shield the air inlet according to the closing signal. The fan provided by the utility model can open the air inlet when the fan is started and close the air inlet when the fan is shut down, so that dust prevention is realized when the fan is shut down, and dust accumulation in the fan is reduced.

Description

Fan with cooling device

Technical Field

The utility model relates to the technical field of household appliances, in particular to a fan.

Background

The fan is as a domestic appliance, mainly used cooling and relieving summer heat and circulating air, uses a period of back when the fan, and the dust covers the impeller easily and leads to the air output to reduce, and the dust still can get into the inside life that leads to the fan of motor and descend, and current fan dustproof effect is unsatisfactory, leads to the dust to pile up in the fan is inside easily, awaits improving.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide a fan to solve the above problems. The embodiment of the utility model achieves the aim through the following technical scheme.

The utility model provides a fan, which comprises an air inlet base, an air outlet part, a fan switch and a controller, wherein the air inlet base comprises an air inlet shell, a driving component and a swinging blade component; the air outlet part is communicated with the air inlet shell; the fan switch is used for triggering an opening signal and a closing signal; the controller is electrically connected with the driving assembly and the fan switch, is used for controlling the driving assembly to drive the swing blade assembly to rotate according to the opening signal so as to at least partially expose the air inlet, and is also used for controlling the driving assembly to drive the swing blade assembly to shield the air inlet according to the closing signal.

In one embodiment, the driving assembly comprises a motor, a driving member and a connecting rod, the controller is electrically connected with the motor, the motor drives the driving member to rotate, the driving member is provided with an eccentric shaft, one end of the connecting rod is rotatably connected to the eccentric shaft, and the other end of the connecting rod is rotatably connected to the swing blade assembly.

In an embodiment, the air inlet base still includes limit switch, and limit switch sets up in the rotation route of driving medium, and the controller is connected with limit switch electricity, and the controller is used for when the driving medium rotates to triggering limit switch, and the control motor stops to rotate.

In one embodiment, the limit switch comprises a first switch and a second switch, the first switch and the second switch are respectively electrically connected with the controller and are respectively arranged on a rotating path of the transmission member in opposite rotation directions, the transmission member transmits a first stop signal when rotating in a forward direction to abut against the first switch, the transmission member transmits a second stop signal when rotating in a reverse direction to abut against the second switch, and the controller controls the motor to stop rotating according to the first stop signal or the second stop signal.

In one embodiment, the connecting rod includes a rod body and a plurality of connecting portions, one end of the rod body is rotatably connected to the eccentric shaft, the plurality of connecting portions are connected to one end of the rod body away from the eccentric shaft, and the swing blade assembly includes a plurality of swing blades, and the swing blades are rotatably connected to the plurality of connecting portions in a one-to-one correspondence.

In one embodiment, the rod body comprises a first rod and a second rod which are connected, the first rod is rotatably connected to the eccentric shaft, the second rod is connected with the first rod at an angle, and the connecting parts are connected to one side of the second rod away from the first rod at intervals up and down.

In an implementation mode, the swing blade assembly comprises a first swing blade assembly and a second swing blade assembly, the first swing blade assembly and the second swing blade assembly are both in transmission connection with the motor, the air inlet comprises a first air inlet and a second air inlet, the first air inlet and the second air inlet are arranged on two opposite sides of the air inlet shell, the first swing blade assembly is arranged at the first air inlet, and the second swing blade assembly is arranged at the second air inlet.

In one embodiment, the transmission member includes a first gear and a second gear, the connecting rod includes a first connecting rod and a second connecting rod, the motor is in transmission connection with the first gear, the second gear is meshed with the first gear, the first connecting rod is connected between the first gear and the first swing blade assembly, and the second connecting rod is connected between the second gear and the second swing blade assembly.

In an embodiment, the first gear comprises a first limiting surface, a second limiting surface and a gear tooth surface connected between the first limiting surface and the second limiting surface, the first limiting surface and the second limiting surface are connected on the same side of the gear tooth surface, the air inlet base further comprises a first limiting bulge and a second limiting bulge, the first limiting bulge and the second limiting bulge are arranged on a rotating path of the first gear, the first limiting bulge is used for abutting against the first limiting surface, and the second limiting bulge is used for abutting against the second limiting surface.

In an embodiment, the air inlet base still includes motor support and motor apron, motor support is fixed in the air inlet casing, motor support is equipped with the motor and accepts the chamber, motor support is located to motor apron lid, in order to be fixed in the motor with the motor and accept the intracavity, motor apron is equipped with annular spacing groove, annular spacing groove and first gear cooperation, in order to carry on spacingly to the rotation of first gear, the second gear includes the gear limiting plate, the gear limiting plate is along the radial protrusion of second gear, gear limiting plate and motor apron cooperation, in order to carry on spacingly to the axial of first gear.

Compared with the prior art, the fan provided by the utility model can open the air inlet when the fan is started and close the air inlet when the fan is shut down, so that dust prevention is realized when the fan is shut down, and dust accumulation in the fan is reduced.

These and other aspects of the utility model are apparent from and will be elucidated with reference to the embodiments described hereinafter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a fan provided herein;

FIG. 2 is a schematic diagram of the structure of the intake base of the fan shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a schematic view of an assembled structure of a motor, a transmission member and a link of the fan shown in FIG. 1;

FIG. 5 is a schematic view of the fan shown in FIG. 1 with the motor, transmission and linkage shown in a disassembled configuration;

fig. 6 is a partial exploded view of the fan shown in fig. 1.

Detailed Description

In order to facilitate an understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the examples of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, the present invention provides a fan 1, including an air inlet base 10, an air outlet portion 30, a fan switch 50 and a controller 70 (fig. 3), wherein the air inlet base 10 includes an air inlet housing 11, a driving component 13 (fig. 3) and a flap component 19, the air inlet housing 11 is provided with an air inlet 116, the driving component 13 is disposed in the air inlet housing 11, the flap component 19 is rotatably connected to the air inlet housing 11 and disposed at the air inlet 116 to shield the air inlet 116 or at least partially expose the air inlet 116, and the driving component 13 is in transmission connection with the flap component 19; the air outlet part 30 is communicated with the air inlet shell 11; the fan switch 50 is used for triggering an opening signal and a closing signal; the controller 70 is electrically connected to the driving assembly 13 and the fan switch 50, and is configured to control the driving assembly 13 to drive the swing blade assembly 19 to rotate according to the opening signal so as to at least partially expose the air inlet 116, and to control the driving assembly 13 to drive the swing blade assembly 19 to shield the air inlet 116 according to the closing signal.

Referring to fig. 2 and 3, the air inlet base 10 includes an air inlet housing 11, a driving assembly 13 and a swing blade assembly 19, wherein the swing blade assembly 19 is rotatably connected to the air inlet housing 11 to control the air inlet housing 11 to supply air or not supply air; the driving assembly 13 is disposed in the air intake housing 11 and can be used to drive the swing blade assembly 19 to rotate.

In the present embodiment, the intake casing 11 has a substantially hollow rectangular parallelepiped structure. The air intake housing 11 includes a side wall 112 and a bottom wall 114, and the side wall 112 is connected to the bottom wall 114. The air intake housing 11 further comprises a top wall 115, the top wall 115 being connected to a side of the side wall 112 remote from the bottom wall 114, i.e. the side wall 112 is connected between the top wall 115 and the bottom wall 114.

Referring to fig. 1 and 3, the sidewall 112 includes a first sidewall 1121, a second sidewall 1122, a third sidewall 1123 and a fourth sidewall 1124, wherein the first sidewall 1121 is opposite to the second sidewall 1122, the third sidewall 1123 is connected between the first sidewall 1121 and the second sidewall 1122, and the third sidewall 1123 is opposite to the fourth sidewall 1124.

The air inlet housing 11 is provided with an air inlet 116 (fig. 2), and the air inlet 116 is disposed on the side wall 112 for air inlet. In this embodiment, the air inlets 116 include a first air inlet 1161 and a second air inlet 1163, and the first air inlet 1161 and the second air inlet 1163 are disposed on two opposite sides of the air inlet casing 11 to achieve double-sided air inlet and ensure an air inlet amount of the fan 1, for example, the first air inlet 1161 is disposed on the first side wall 1121, and the second air inlet 1163 is disposed on the second side wall 1122. In other embodiments, the fan 1 may also be configured to intake air from a single side, that is, the air inlet 116 may also be disposed on only one of the first side wall 1121, the second side wall 1122, the third side wall 1123, and the fourth side wall 1124.

Referring to fig. 3 and 4, the driving assembly 13 is in transmission connection with the swing blade assembly 19 to drive the swing blade assembly 19 to rotate, so as to open or close the air inlet 116. The driving assembly 13 includes a motor 132 (fig. 5), a transmission member 134 and a connecting rod 136, wherein the motor 132 is configured to provide a driving force for the transmission member 134 to drive the transmission member 134 to rotate, the transmission member 134 is driven to rotate, the connecting rod 136 can be driven to rotate by the rotation of the transmission member 134, and the connecting rod 136 drives the swing blade assembly 19 to rotate.

In the present embodiment, the motor 132 is a stepper motor. In other embodiments, the motor 132 may also be a servo motor, which is sufficient to drive the transmission member 134 to rotate.

Referring to fig. 4 and 5, the driving member 134 is provided with an eccentric shaft 1341, a center of the eccentric shaft 1341 is spaced apart from a rotation center of the driving member 134, that is, the eccentric shaft 1341 is eccentrically disposed with respect to the rotational center of the driving member 134, one end of the connecting rod 136 is rotatably connected to the eccentric shaft 1341, the other end is rotatably connected between the swing blade assemblies 19, so that the motor 132, the transmission piece 134, the eccentric shaft 1341 and the connecting rod 136 form a crank-slider mechanism, wherein, the output shaft of the motor 132 is the frame of the slider-crank mechanism, the crank of the slider-crank mechanism is arranged between the eccentric shaft 1341 and the rotation center of the transmission piece 134, the connecting rod 136 is the connecting rod 136 of the slider-crank mechanism, the swing blade assembly 19 is the slider of the slider-crank mechanism, by providing the motor 132, the driver 134, the eccentric shaft 1341 and the connecting rod 136 as a crank-slider mechanism, the movement of the link 136 and thus the rotation of the swing blade assembly 19 is made more stable.

In this embodiment, the transmission member 134 includes a first gear 1343 and a second gear 1345, wherein the motor 132 is in transmission connection with the first gear 1343, that is, the output shaft of the stepping motor is connected with the first gear 1343, and the second gear 1345 is engaged with the first gear 1343, so that the first gear 1343 drives the second gear 1345 to rotate. Since the first gear 1343 is driven by the motor 132, the first gear 1343 is a driving gear and the second gear 1345 is a driven gear. In this embodiment, the first gear 1343 and the second gear 1345 have substantially the same structure and each includes an eccentric shaft 1341, and a distance between a center of the eccentric shaft 1341 on the first gear 1343 and a rotation center of the first gear 1343 may be equal to a distance between a center of the eccentric shaft 1341 on the second gear 1345 and a rotation center of the second gear 1345.

The first gear 1343 includes a first limiting surface 1342, a second limiting surface 1344, and a gear tooth surface 1346 connected between the first limiting surface 1342 and the second limiting surface 1344, the first limiting surface 1342 and the second limiting surface 1344 are connected on the same side of the gear tooth surface 1346, and the first limiting surface 1342 and the second limiting surface 1344 can be used for limiting the first gear 1343, so that the first gear 1343 and the second gear 1345 can be stably engaged without being separated from each other. Gear teeth 1346 may be provided to mesh with gear teeth on second gear 1345.

The second gear 1345 includes a gear limiting plate 1347, and the gear limiting plate 1347 protrudes from the teeth of the second gear 1345 along the radial direction of the second gear 1345, so that the first gear 1343 does not move in the axial direction when engaged with the second gear 1345, thereby limiting the axial direction of the first gear 1343.

The connecting rod 136 includes a rod 1360 and a plurality of connecting portions 1370, and one end of the rod 1360 is rotatably connected to the eccentric shaft 1341, so that when the driving member 134 rotates, the rod 1360 can rotate not only synchronously with the driving member 134 but also relatively to the eccentric shaft 1341.

Rod 1360 includes a first rod 1361 and a second rod 1363 connected to each other, wherein first rod 1361 is rotatably connected to eccentric shaft 1341, and second rod 1363 is connected to first rod 1361 at an angle, for example, second rod 1363 is connected to first rod 1361 at a right angle, so that rod 1360 is substantially "L" shaped.

A plurality of connecting portions 1370 are connected to an end of the rod 1360 away from the eccentric shaft 1341, and the connecting portions 1370 have a substantially hollow cylindrical shape. The connecting portion 1370 is provided with a mounting hole 1371 and an opening 1373, the mounting hole 1371 is disposed at a central position of the connecting portion 1370, and the opening 1373 is communicated with the mounting hole 1371, so that the connecting portion 1370 is connected with and detached from the swing vane assembly 19. In the present embodiment, a plurality of connecting portions 1370 are connected to a side of second bar 1363 away from first bar 1361 at upper and lower intervals. For example, the number of the connection portions 1370 is five, and the five connection portions 1370 are sequentially spaced in a vertical direction, wherein the vertical direction is a vertical direction of the fan 1 in a normal use state. In other embodiments, the number of the connecting portions 1370 may be two or more.

The connecting rod 136 includes a first connecting rod 1362 and a second connecting rod 1364, wherein the first connecting rod 1362 is rotatably connected to the eccentric shaft 1341 of the first gear 1343, such that when the first gear 1343 rotates, the first connecting rod 1362 can not only rotate synchronously with the first gear 1343, but also rotate relative to the eccentric shaft 1341 of the first gear 1343. The second link 1364 is rotatably connected to the eccentric axle 1341 of the second gear 1345 such that when the second gear 1345 rotates, the second link 1364 can not only rotate synchronously with the second gear 1345, but also rotate relative to the eccentric axle 1341 of the second gear 1345.

With reference to fig. 2 and fig. 5, the swing blade assembly 19 is disposed at the air inlet 116 to shield the air inlet 116 or at least partially expose the air inlet 116, when the swing blade assembly 19 shields the air inlet 116, the air inlet 116 is closed, so that air is difficult to enter the air inlet housing 11 from the air inlet 116, that is, dust is difficult to enter through the air inlet 116, and dust accumulation inside the fan 1 is reduced; when the swing blade assembly 19 at least partially exposes the air inlet 116, the air inlet 116 is opened, and the air inlet of the fan 1 can be realized.

The swing blade assembly 19 includes a plurality of swing blades 191, each swing blade 191 includes a plate 1911, a connecting shaft 1913 and a rotating shaft 1915, wherein the plate 1911 is substantially a long-strip-shaped plate-shaped structure, the plate 1911 is rotatably disposed on the air intake housing 11 and can be used for shielding the air intake 116, and the connecting shaft 1913 and the rotating shaft 1915 are both connected to the plate 1911. In this embodiment, the connecting shaft 1913 is connected to one end of the plate 1911 along the length direction, and the connecting shaft 1913 may be used to be connected to the connecting portion 1370, for example, the connecting shaft 1913 is inserted into the mounting hole 1371 through the opening 1373, so as to connect the connecting shaft 1913 and the connecting portion 1370. The rotation shafts 1915 are connected to opposite ends of the plate 1911 in the longitudinal direction, and the rotation shafts 1915 may be engaged with shaft holes provided in the air intake housing 11, so that the plate 1911 is rotatably provided in the air intake housing 11. In the present embodiment, the plurality of swinging blades 191 are rotatably connected to the plurality of connecting portions 1370 in a one-to-one correspondence manner, that is, the number of the swinging blades 191 is equal to the number of the connecting portions 1370, and each swinging blade 191 is connected to one connecting portion 1370. In other embodiments, the number of the swinging blades 191 may not be equal to the number of the connecting portions 1370.

In this embodiment, the swing blade assembly 19 includes a first swing blade assembly 193 and a second swing blade assembly 195, and both the first swing blade assembly 193 and the second swing blade assembly 195 are in transmission connection with the motor 132, so that the motor 132 can synchronously drive the first swing blade assembly 193 and the second swing blade assembly 195 to rotate. The first swing blade assembly 193 is disposed at the first air inlet 1161, the first swing blade assembly 193 may be configured to control opening or closing of the first air inlet 1161, the second swing blade assembly 195 is disposed at the second air inlet 1163, and the second swing blade assembly 195 may be configured to control opening or closing of the second air inlet 1163. In this embodiment, the first swing blade assembly 193 and the second swing blade assembly 195 rotate synchronously, that is, when the first swing blade assembly 193 rotates, the second swing blade assembly 195 rotates along with the first swing blade assembly 193, so as to achieve synchronous control over the first air inlet 1161 and the second air inlet 1163. In other embodiments, the first and second swing blade assemblies 193 and 195 may also rotate asynchronously, i.e., the first and second swing blade assemblies 193 and 195 may be driven by different drive configurations. In this embodiment, the first and second swing blade assemblies 193 and 195 have the same structure, and each include a plate 1911, a connecting shaft 1913, and a rotating shaft 1915.

Referring to fig. 4 and 5, the first swing blade assembly 193 is connected to an end of the first link 1362 away from the first gear 1343, i.e., the first link 1362 is connected between the first gear 1343 and the first swing blade assembly 193. The motor 132 is electrically connected to the controller 70, so that the controller 70 can control the output shaft of the motor 132 to rotate, the output shaft of the motor 132 can rotate to drive the first gear 1343 to rotate, the first gear 1343 rotates to drive the first link 1362 to rotate, and the first link 1362 rotates to drive the first swing blade assembly 193 to rotate, thereby controlling the opening or closing of the first air inlet 1161.

The second swing blade assembly 195 is connected to one end of the second connecting rod 1364 far from the second gear 1345, that is, the second connecting rod 1364 is connected between the second gear 1345 and the second swing blade assembly 195, so that the rotation of the first gear 1343 can drive the second gear 1345 to rotate, the rotation of the second gear 1345 drives the second connecting rod 1364 to rotate, and the rotation of the second connecting rod 1364 drives the second swing blade assembly 195 to rotate, thereby controlling the opening or closing of the second air inlet 1163.

The air intake base 10 further includes a limit switch (not shown) disposed in the rotation path of the transmission member 134, so that the transmission member 134 can trigger the limit switch in the rotation process. The controller 70 is electrically connected to the limit switch, and when the transmission member 134 rotates to trigger the limit switch, the controller 70 controls the motor 132 to stop rotating. The limit switch can limit the rotation angle of the transmission member 134, that is, the limit switch can limit the rotation angle of the swing blade assembly 19, so as to avoid the damage of the swing blade assembly 19 caused by the overlarge rotation angle of the swing blade assembly 19.

In this embodiment, the limit switches include a first switch and a second switch, which are respectively electrically connected to the controller 70 and respectively disposed on the opposite rotation paths of the transmission member 134, so that the transmission member 134 selectively abuts against the first switch or the second switch. The transmission member 134 transmits a first stop signal when rotating forward to abut against the first switch, and transmits a second stop signal when rotating backward to abut against the second switch, and the controller 70 controls the motor 132 to stop rotating according to the first stop signal or the second stop signal. In this embodiment, the forward direction may be a clockwise direction, and the reverse direction may be a counterclockwise direction. In other embodiments, the forward direction may be a counterclockwise direction, and the reverse direction may be a clockwise direction. The maximum rotation angle of the transmission member 134 in the two opposite rotation directions can be limited by the first switch and the second switch, so that the minimum rotation angle and the maximum rotation angle of the opposite side wall 112 of the swing blade assembly 19 are limited. In this embodiment, a first switch may be used to control the minimum rotational angle of the swing blade assembly 19 relative to the side wall 112, and a second switch may be used to control the maximum rotational angle of the swing blade assembly 19 relative to the side wall 112.

Referring to fig. 2, the air intake base 10 further includes a plurality of supporting legs 17, the supporting legs 17 are disposed at the bottom of the bottom wall 114, and the air intake base 10 can be supported on the ground or a table top or other surfaces through the supporting legs 17, so that the fan 1 can be stably placed. In the present embodiment, the number of the supporting legs 17 is four, and four supporting legs 17 may be disposed at the bottom of the bottom wall 114 in a rectangular shape.

The air inlet base 10 further includes a fan blade (not shown) and a motor for driving the fan blade to rotate, and the rotation of the fan blade can drive the air to flow, so that the air can flow into the fan 1 from the air inlet 116 and flow out from the air outlet 30. In this embodiment, the fan blades are disposed inside the air intake housing 11. In other embodiments, the fan blade may be disposed at the air outlet portion 30. In this embodiment, the fan blades are diagonal. In other embodiments, the fan blades may also be through-flow.

Referring to fig. 5, the air intake base 10 further includes a motor bracket 16 and a motor cover 18, wherein the motor bracket 16 may be fixed to the air intake housing, and the motor bracket 16 may be fixed by screws. The motor support 16 is provided with a motor accommodating cavity 162, the motor accommodating cavity 162 can be used for accommodating the motor 132, the motor cover plate 18 is covered on the motor support 16 to fix the motor 132 in the motor accommodating cavity 162, the motor cover plate 18 can be fixed with the motor support 16 through screws, specifically, the motor support 16, the motor 132 and the motor cover plate 18 can be provided with screw holes, and the screws can sequentially penetrate through the motor support 16, the motor 132 and the motor cover plate 18 and then are matched with nuts, so that the motor support 16, the motor 132 and the motor cover plate 18 are fixed into an integral structure.

The motor bracket 16 is further provided with a first limiting protrusion 164 and a second limiting protrusion 166, the first limiting protrusion 164 and the second limiting protrusion 166 are arranged on a rotating path of the first gear 1343, wherein the first limiting protrusion 164 is used for abutting against a first limiting surface 1342, and the second limiting protrusion 166 is used for abutting against a second limiting surface 1344, so that the rotating angle of the swing blade assembly 19 is limited, and the damage of the swing blade assembly 19 caused by the overlarge rotating angle of the swing blade assembly 19 driven by the motor 132 is prevented. First limit protrusion 164 may be used to limit the minimum rotation angle of swing blade assembly 19 relative to sidewall 112, for example, the minimum rotation angle is 0 °, that is, swing blade assembly 19 shields air inlet 116, and first limit protrusion 164 may be used to set a first switch, so that when motor 132 drives first gear 1343 to rotate to abut against the first switch, controller 70 may control motor 132 to stop rotating, and prevent that the rotation of motor 132 may not drive swing blade assembly 19 to rotate, resulting in the phenomenon that motor 132 is damaged due to stalling. The second limiting protrusion 166 may be used to limit a maximum rotation angle of the swing blade assembly 19 relative to the sidewall 112, for example, the maximum rotation angle is 90 °, that is, the swing blade assembly 19 opens the air inlet 116, and the second limiting protrusion 166 may be used to set a second switch, so that when the motor 132 drives the first gear 1343 to rotate to abut against the second switch, the controller 70 may control the motor 132 to stop rotating, and may also prevent the motor 132 from stalling.

The motor cover plate 18 is provided with an annular limiting groove 181, and the annular limiting groove 181 can be matched with a matching structure arranged on the first gear 1343 to limit the rotation of the first gear 1343, wherein the matching structure can be an annular protrusion. The motor cover plate 18 can also be matched with the gear limiting plate 1347 to limit the axial direction of the first gear 1343, so as to prevent the first gear 1343 from being separated from the second gear 1345.

Referring to fig. 1 and 6, the air outlet portion 30 is communicated with the air inlet housing 11, and the air outlet portion 30 can be used for air outlet. In this embodiment, the air outlet portion 30 includes a connection assembly 32 and an air outlet assembly 34, wherein the connection assembly 32 is connected between the air outlet assembly 34 and the air inlet base 10.

The fan switch 50 is used for triggering an opening signal and a closing signal, wherein the opening signal indicates that the fan 1 is in a starting state, namely, the motor drives the fan blades to rotate, so that air inlet and air outlet of the fan 1 are realized; the close signal indicates that the fan 1 is in a shutdown state, the motor stops driving the fan blades to rotate, and the fan 1 stops air inlet and air outlet. In this embodiment, the fan switch 50 may be a key switch disposed on the air intake housing 11, and the circuit board may be touched by pressing the key switch to trigger an on signal or an off signal, wherein the on signal may be triggered by one pressing and the off signal may be triggered by pressing again. In some embodiments, the fan switch 50 may also be a touch switch, and the on signal and the off signal may be triggered by touch. In other embodiments, the fan switch 50 may be disposed on a remote controller, that is, the fan switch 50 may be disposed outside a housing of the fan 1, and an infrared receiving module is disposed inside the housing, and when infrared rays emitted from the remote controller are received by the infrared receiving module, the infrared receiving module triggers an on signal or an off signal.

Referring to fig. 3 and 4, the controller 70 is electrically connected to the driving assembly 13 and the fan switch 50 (fig. 1) for controlling the driving assembly 13 to drive the swing blade assembly 19 to rotate to expose at least a portion of the air inlet 116 (fig. 2) according to the opening signal, and specifically, the controller 70 is electrically connected to the motor 132 to control the output shaft of the motor 132 to rotate and output the torque to drive the transmission member 134 to rotate, the rotation of the transmission member 134 drives the connecting rod 136 to rotate, and the rotation of the connecting rod 136 drives the swing blade assembly 19 to rotate. When the fan 1 is turned on, the controller 70 controls the driving assembly 13 to drive the swing blade assembly 19 to rotate, so as to open the air inlet 116, and thus, the air inlet of the fan 1 is realized. The controller 70 is further configured to control the driving component 13 to drive the swing blade component 19 to shield the air inlet 116 according to the closing signal, that is, when the fan 1 is closed, the controller 70 controls the driving component 13 to drive the swing blade component 19 to rotate, so as to close the air inlet 116, and the fan 1 stops supplying air, so that entry of dust is reduced, dust prevention during shutdown is achieved, and accumulation of dust inside the fan 1 is reduced.

In summary, in the fan 1 provided by the present invention, the controller 70 controls the driving component 13 to drive the flap component 19 to rotate according to the opening signal so as to at least partially expose the air inlet 116, so that the fan 1 can open the air inlet 116 when the fan is started, and the controller 70 controls the driving component 13 to drive the flap component 19 to shield the air inlet 116 according to the closing signal, so that the fan 1 can close the air inlet 116 when the fan is stopped, thereby preventing dust when the fan is stopped, reducing the accumulation of dust inside the fan 1, and prolonging the service life of the fan 1.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A fan, comprising:

the air inlet base comprises an air inlet shell, a driving component and a swinging blade component, the air inlet shell is provided with an air inlet, the driving component is arranged in the air inlet shell, the swinging blade component is rotatably connected to the air inlet shell and arranged at the air inlet so as to shield the air inlet or at least partially expose the air inlet, and the driving component is in transmission connection with the swinging blade component;

the air outlet part is communicated with the air inlet shell;

the fan switch is used for triggering an opening signal and a closing signal; and

the controller is electrically connected with the driving component and the fan switch, is used for controlling the driving component to drive the swing blade component to rotate according to the opening signal so as to at least partially expose the air inlet, and is also used for controlling the driving component to drive the swing blade component to shield the air inlet according to the closing signal.

2. The fan as claimed in claim 1, wherein the driving assembly includes a motor, a transmission member and a connecting rod, the controller is electrically connected to the motor, the motor drives the transmission member to rotate, the transmission member is provided with an eccentric shaft, one end of the connecting rod is rotatably connected to the eccentric shaft, and the other end of the connecting rod is rotatably connected to the oscillating vane assembly.

3. The fan as claimed in claim 2, wherein the air intake base further comprises a limit switch, the limit switch is disposed in a rotation path of the transmission member, the controller is electrically connected to the limit switch, and the controller is configured to control the motor to stop rotating when the transmission member rotates to trigger the limit switch.

4. The fan as claimed in claim 3, wherein the limit switch includes a first switch and a second switch, the first switch and the second switch are respectively electrically connected to the controller and are respectively disposed on opposite rotation paths of the transmission member, the transmission member sends a first stop signal when rotating forward to abut against the first switch, the transmission member sends a second stop signal when rotating backward to abut against the second switch, and the controller controls the motor to stop rotating according to the first stop signal or the second stop signal.

5. The fan as claimed in claim 2, wherein the connecting rod includes a rod body having one end rotatably connected to the eccentric shaft and a plurality of connecting portions connected to one end of the rod body away from the eccentric shaft, and the swing blade assembly includes a plurality of swing blades rotatably connected to the plurality of connecting portions in a one-to-one correspondence.

6. The fan as claimed in claim 5, wherein the lever body includes a first lever and a second lever connected to each other, the first lever being rotatably connected to the eccentric shaft, the second lever being connected to the first lever at an angle, and a plurality of the connection portions being connected to the second lever at a side thereof away from the first lever with a vertical interval.

7. The fan as claimed in claim 2, wherein the swing blade assembly includes a first swing blade assembly and a second swing blade assembly, the first swing blade assembly and the second swing blade assembly are both in transmission connection with the motor, the air inlet includes a first air inlet and a second air inlet, the first air inlet and the second air inlet are disposed at opposite sides of the air inlet housing, the first swing blade assembly is disposed at the first air inlet, and the second swing blade assembly is disposed at the second air inlet.

8. The fan as claimed in claim 7, wherein the transmission member includes a first gear and a second gear, the motor is drivingly connected to the first gear, the second gear is engaged with the first gear, and the link includes a first link and a second link, the first link is connected between the first gear and the first vane assembly, and the second link is connected between the second gear and the second vane assembly.

9. The fan as claimed in claim 8, wherein the first gear includes a first limiting surface, a second limiting surface and a gear tooth surface connected between the first limiting surface and the second limiting surface, the first limiting surface and the second limiting surface are connected to the same side of the gear tooth surface, the air inlet base further includes a first limiting protrusion and a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are disposed on a rotation path of the first gear, the first limiting protrusion is used for abutting against the first limiting surface, and the second limiting protrusion is used for abutting against the second limiting surface.

10. The fan according to claim 9, wherein the air intake base further comprises a motor bracket and a motor cover plate, the motor bracket is fixed to the air intake casing, the motor bracket is provided with a motor accommodating cavity, the motor cover plate is covered on the motor bracket to fix the motor in the motor accommodating cavity, the motor cover plate is provided with an annular limiting groove, the annular limiting groove is matched with the first gear to limit the rotation of the first gear, the second gear comprises a gear limiting plate, the gear limiting plate protrudes radially along the second gear, and the gear limiting plate is matched with the motor cover plate to limit the axial direction of the first gear.

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