Machine head and fan

Abstract

The utility model relates to the technical field of household appliances, and discloses a machine head and a fan. The filter screen is used for filtering air; the vibration device is matched with the filter screen and used for driving the filter screen to vibrate; the fan has an air supply mode and a self-cleaning mode, and when the fan is in the air supply mode, the fan rotates forwards, so that air is blown out from the front end of the machine head after being filtered by the filter screen; when the fan is in the self-cleaning mode, the vibration device drives the filter screen to reduce the adhesive force of dust on the filter screen, and the fan rotates reversely to blow out the dust from the rear end of the machine head. The vibration device drives the filter screen to vibrate, the adhesive force of dust on the filter screen is reduced, the dust attached to the surface of the filter screen can be shaken off in the movement process of the filter screen, meanwhile, the fan is matched with reverse rotation, air sent out in the reverse direction can blow out the dust from the rear end of the machine head, the self-cleaning effect of the filter screen can be achieved, and the service life of the filter screen is prolonged. And the problems that the dust is blown out from the front end of the machine head, the user experience is poor, or the dust falls into the machine head and is inconvenient to clean can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a machine head and a fan. Background Art

[0002] With the improvement of life quality, people pay more attention to health and have higher requirements for air quality, and the demand for fans with filtering effects is increasing. Existing fans with filters can filter out dust, lint and other impurities in the air in advance when blowing, and send out clean and healthy air, which is deeply loved by consumers.

[0003] However, due to the long-term use of the filter, if it is not replaced in time, the dust, lint and other impurities attached to the filter will reduce its air permeability, which will affect the air volume of the fan, causing the pressure of the input air volume to increase. If the fan runs in this state for a long time, it is very easy to be damaged and its service life will be shortened. Utility Model Content

[0004] In view of this, the utility model provides a machine head and a fan to solve the problem in the prior art that dust, lint and other impurities are attached to the filter of the fan for a long time, which reduces its air permeability and affects the service life of the fan.

[0005] In a first aspect, the utility model provides a head for a fan, the head comprising:

[0006] Fan;

[0007] Filter, used to filter air;

[0008] A vibration device, cooperating with the filter screen, for driving the filter screen to vibrate;

[0009] The fan has air supply mode and self-cleaning mode. When the fan is in air supply mode, the fan rotates forward, so that the air is filtered by the filter and blown out from the front of the machine head;

[0010] When the fan is in self-cleaning mode, the vibration device drives the filter to reduce the adhesion of dust on it, and the fan reverses to blow the dust out from the rear end of the machine head.

[0011] Beneficial effect: After using the fan or turning on the self-cleaning mode regularly, the vibration device drives the filter to vibrate, reducing the adhesion of dust on the filter. The movement of the filter will shake off the dust attached to its surface, and the fan will rotate in the opposite direction at the same time. The wind sent in the opposite direction can blow the dust out from the rear end of the machine head, which can not only achieve the effect of self-cleaning of the filter and improve the service life of the fan, but also effectively avoid dust being blown out from the front end of the machine head, resulting in a bad user experience, or dust falling into the inside of the machine head and being inconvenient to clean. It effectively solves the problem in the prior art that the filter of the fan is long-term adhered to dust, lint and other impurities, which will reduce its air permeability and affect the service life of the fan.

[0012] In an optional embodiment, the head further includes a rear mesh cover, and the filter is installed in the rear mesh cover;

[0013] The vibration device includes a driving mechanism and a vibration bracket, and the filter screen is clamped between the vibration bracket and the rear screen cover;

[0014] The driving mechanism is installed on the rear mesh cover and connected with the vibration bracket. The driving mechanism drives the vibration bracket to reciprocate to beat the filter screen to form high-frequency vibration.

[0015] Beneficial effect: By installing the filter in the rear mesh cover, the position is closer to the rear end of the machine head, so that the dust on the filter can be blown out from the rear end of the machine head. The vibration device adopts the design of the drive mechanism and the vibration bracket, and the vibration bracket and the rear mesh cover are distributed on both sides of the filter, and the filter is clamped between the two, which can effectively ensure the stability of the filter structure. When the self-cleaning mode is started, the drive mechanism drives the vibration bracket to move back and forth quickly, slapping the filter to deform it, so that the filter forms high-frequency vibration and shakes off the dust. At this time, with the reverse rotation of the fan, the wind sent in the opposite direction can blow the dust out from the rear end of the machine head, which is convenient for cleaning.

[0016] In an optional embodiment, the vibration support comprises:

[0017] A connecting part, the driving mechanism is connected to the connecting part, and the driving mechanism drives the vibration bracket to reciprocate along the axial direction of the filter screen through the connecting part;

[0018] The bracket part is arranged on the periphery of the connecting part, supported on the side of the filter away from the rear mesh cover, and in contact with the filter. The bracket part is used to beat the filter when the vibration bracket reciprocates along the axial direction of the filter.

[0019] Beneficial effect: The vibration bracket adopts a connecting part design to facilitate its connection with the driving mechanism. The bracket part is supported on the side of the filter away from the rear mesh cover through the arranged bracket part. The bracket part and the filter are in contact and fit, so that when the vibration bracket reciprocates along the axial direction of the filter, the bracket part can beat the filter, causing the filter to deform back and forth to form high-frequency vibration, which is more conducive to the rapid shedding of dust.

[0020] In an optional embodiment, the filter screen is annular;

[0021] The maximum outer diameter of the bracket is set to d, the inner diameter of the filter screen is d1, and the outer diameter is d2, d1<d≤d2; and / or, the connecting part includes a disc-shaped connecting body and a hinge seat fixedly arranged on a side of the connecting body close to the vibration device;

[0022] The driving mechanism is hinged to the hinge seat, and the outer diameter of the connecting body is smaller than the inner diameter of the filter screen.

[0023] Beneficial effects: By setting the maximum outer diameter of the bracket part to be larger than the inner diameter of the filter screen and smaller than or equal to the outer diameter of the filter screen, it can be effectively ensured that the bracket part can be in contact with the main part of the filter screen, making it convenient to pat and shake off the dust on the filter screen. The connecting part adopts the design of a disc-shaped connecting body, which can effectively ensure the structural strength of the entire vibration bracket, and by setting the outer diameter of the connecting body to be smaller than the inner diameter of the filter screen, the connecting body is located in the inner ring of the filter screen, which can effectively avoid the connecting part blocking the filter screen and affecting the air permeability of the filter screen. In addition, by providing a hinged seat on the connecting body, it is convenient to connect the driving mechanism to the vibration bracket. The driving mechanism and the vibration bracket are connected by a hinged manner, which makes the vibration bracket more flexible and less prone to jamming during movement.

[0024] In an optional embodiment, the bracket portion includes a plurality of brackets arranged at intervals along the circumference of the connecting portion.

[0025] Beneficial effect: The bracket part adopts a plurality of supporting plates arranged at intervals along the circumference of the connecting part, which can not only ensure that the bracket part can be stably matched with the filter screen, but also reduce the shielding of the filter screen by the bracket part, thereby ensuring the ventilation effect of the filter screen.

[0026] In an optional embodiment, the driving mechanism includes:

[0027] The vibration motor is installed and fixed on the rear mesh cover;

[0028] The crank-connecting rod mechanism is transmission-connected between the vibration motor and the vibration bracket. The vibration motor drives the vibration bracket to reciprocate relative to the filter screen by driving the crank-connecting rod mechanism to move.

[0029] Beneficial effects: The driving mechanism adopts a crank-connecting rod mechanism as a transmission component, which has the advantages of stable and reliable performance, good driving effect and high precision, making the vibration bracket more flexible, stable and controllable during movement.

[0030] In an optional embodiment, the crank-connecting rod mechanism comprises:

[0031] A crank connected to the output end of the vibration motor;

[0032] A connecting rod, both ends of which are hinged to the vibration bracket and the crank respectively;

[0033] The vibration motor drives the crank to rotate eccentrically to drive the connecting rod to reciprocate, thereby driving the vibration bracket to reciprocate relative to the filter.

[0034] Beneficial effects: The crank is the active part and rotates under the drive of the vibration motor, and the connecting rod is the driven part and performs reciprocating swing motion. During the reciprocating swing process, the connecting rod can drive the vibration bracket to reciprocate along the axial direction of the filter relative to the filter, thereby causing the filter to deform left and right, forming high-frequency vibration and shaking off dust.

[0035] In an optional embodiment, the rear net cover includes a rear seat and a rear net installed on the periphery of the rear seat, and the filter is installed in the rear net;

[0036] A motor mounting seat and a rotating shaft supporting seat are fixedly arranged in the rear seat, and the vibration motor is detachably mounted and fixed in the motor mounting seat;

[0037] The rotating shaft support seat is provided with an open groove, and the crank comprises an eccentric wheel, an eccentric shaft, and a support shaft, wherein one end of the eccentric shaft is eccentrically fixed on the eccentric wheel, and the other end is fixed to the support shaft;

[0038] The eccentric wheel is connected and fixed to the output shaft of the vibration motor, and the connecting rod is hinged on the eccentric shaft;

[0039] The supporting shaft is coaxially arranged with the output shaft, and the supporting shaft is rotatably placed in the open slot.

[0040] Beneficial effects: The rear seat is provided to facilitate the installation of the vibration motor, and also facilitate the assembly of the entire machine head and the machine body. The rear net provided plays a role of primary filtering, and can block and filter some large floccules and other debris in the incoming air, thereby reducing the pressure of the filter. In addition, by providing a rotating shaft support seat in the rear seat, an open groove is provided on the rotating shaft support seat, one end of the crank is connected to the vibration motor, and the other end is rotatably placed in the open groove of the rotating shaft support seat, so as to support the crank from both ends, which can further improve the stability of the crank structure, and thus improve the stability and reliability of the entire crank-connecting rod mechanism and the movement of the vibration bracket.

[0041] In an optional embodiment, the head further includes an air duct, the air duct having an air inlet end and an air outlet end;

[0042] The fan is arranged in the air duct, the filter is located at the air inlet end of the air duct, and a fan installation part for installing the fan is arranged in the center of the air duct;

[0043] A bracket mounting position for mounting a positioning vibration bracket is provided on one side of the fan mounting portion close to the filter.

[0044] Beneficial effect: The filter screen is arranged at the air inlet end of the air duct to filter the incoming air, and the fan installation part can not only install and fix the fan, but also install and position the vibration bracket, which makes the internal structure of the head more compact.

[0045] In an optional embodiment, a limiting structure is provided on the periphery of the bracket installation position, and the limiting structure cooperates with the vibration bracket to limit the extreme displacement of the vibration bracket moving in a direction close to the filter screen.

[0046] Beneficial effect: By setting the limiting structure, the extreme displacement of the vibration bracket moving in the direction close to the filter can be limited, thereby effectively preventing the vibration bracket from moving excessively and causing structural damage to the filter.

[0047] In an optional embodiment, the fan comprises:

[0048] Air supply motor;

[0049] Air supply blades, the air supply motor is connected to the air supply blades and is used to drive the air supply blades to rotate;

[0050] When the fan is in the air supply mode, the air supply motor drives the air supply blades to rotate in the forward direction; when the fan is in the self-cleaning mode, the air supply motor drives the air supply blades to rotate in the reverse direction.

[0051] Beneficial effects: The fan adopts the form of an air supply motor and air supply blades, with a simple structure and good air supply effect. When the fan is in different modes, the air supply direction can be adjusted by driving the air supply blades to rotate forward or reversely through the air supply motor, and the control is relatively convenient and quick.

[0052] In a second aspect, the utility model further provides a fan, comprising a body and a head of any one of the above-mentioned embodiments mounted on the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A cross-sectional view of the machine head in an embodiment of the utility model;

[0055] Figure 2 An exploded view of the machine head in the embodiment of the utility model;

[0056] Figure 3 This is a schematic diagram of the structure of the air duct in the embodiment of the utility model;

[0057] Figure 4 This is a schematic diagram of the structure of the rear seat in the embodiment of the utility model;

[0058] Figure 5 This is a schematic diagram of the structure of the vibration bracket in the embodiment of the utility model;

[0059] Figure 6 It is a structural schematic diagram of a crank at one angle in an embodiment of the utility model;

[0060] Figure 7 This is a schematic structural diagram of the crank at another angle in an embodiment of the utility model.

[0061] Description of reference numerals:

[0062] 10. Fan; 11. Air supply motor; 12. Air supply blades; 13. Blade knob;

[0063] 20. Filter;

[0064] 30. Vibration device;

[0065] 31. driving mechanism; 311. vibration motor; 312. crank-connecting rod mechanism; 3121. crank; 31210. connecting groove; 31211. eccentric wheel; 31212. eccentric shaft; 31213. supporting shaft; 3122. connecting rod; 3123. shaft pin;

[0066] 32. Vibration bracket; 321. Connecting part; 3211. Articulated seat; 322. Bracket part;

[0067] 40, rear net cover; 41, rear seat; 411, motor mounting seat; 412, shaft support seat; 4120, opening slot; 42, rear net;

[0068] 50, air duct; 51, fan installation part; 510, motor installation position; 511, bracket installation position; 512, limit structure; 52, rear net installation position;

[0069] 60. Front net. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0071] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0072] According to the embodiments of the utility model, on the one hand, the utility model provides a head, which is applied to a fan, and the head includes: a fan 10, a filter 20, and a vibration device 30, wherein the filter 20 is used to filter air; the vibration device 30 cooperates with the filter 20 to drive the filter 20 to vibrate; the fan has an air supply mode and a self-cleaning mode. When the fan is in the air supply mode, the fan 10 rotates forward, so that the wind is filtered by the filter 20 and blown out from the front end of the head; when the fan is in the self-cleaning mode, the vibration device 30 drives the filter 20 to reduce the adhesion of dust thereon, and the fan 10 reverses to blow the dust out from the rear end of the head.

[0073] In the above embodiment, after using the fan or the self-cleaning mode can be turned on periodically, the vibration device 30 drives the filter 20 to vibrate, thereby reducing the adhesion of dust on the filter 20. The movement of the filter 20 will shake off the dust attached to its surface, and at the same time, the fan 10 cooperates with the reverse rotation, and the wind sent in the opposite direction can blow the dust out from the rear end of the machine head. This can not only achieve the self-cleaning effect of the filter 20 and improve the service life of the fan, but also effectively avoid the dust being blown out from the front end of the machine head, resulting in a bad user experience, or the dust falling into the inside of the machine head and being inconvenient to clean. This effectively solves the problem in the prior art that the filter 20 of the fan is adhered to dust, lint and other impurities for a long time, which will reduce its air permeability and affect the service life of the fan.

[0074] It should be noted that, in this embodiment, “the vibration device 30 cooperates with the filter screen 20 ” includes but is not limited to: the vibration device 30 is fixedly connected to the filter screen 20 , or the vibration device 30 is installed on the filter screen 20 , or the vibration device 30 is in contact with the filter screen 20 .

[0075] In some embodiments, the machine head also includes a rear mesh cover 40, and the filter 20 is installed in the rear mesh cover 40; the vibration device 30 includes a driving mechanism 31 and a vibration bracket 32, and the filter 20 is clamped between the vibration bracket 32 ​​and the rear mesh cover 40; the driving mechanism 31 is installed on the rear mesh cover 40 and connected to the vibration bracket 32, and the driving mechanism 31 drives the vibration bracket 32 ​​to reciprocate to beat the filter 20 to form high-frequency vibration.

[0076] In the above embodiment, by installing the filter 20 in the rear mesh cover 40, the position is closer to the rear end of the machine head, so that the dust on the filter 20 can be blown out from the rear end of the machine head. The vibration device 30 adopts the design of the driving mechanism 31 and the vibration bracket 32, and the vibration bracket 32 ​​and the rear mesh cover 40 are distributed on both sides of the filter 20, and the filter 20 is clamped between the two, which can effectively ensure the stability of the structure of the filter 20. When the self-cleaning mode is started, the driving mechanism 31 drives the vibration bracket 32 ​​to move back and forth quickly, slapping the filter 20 to deform it, so that the filter 20 forms high-frequency vibration and shakes off the dust. At this time, with the reverse rotation of the fan 10, the wind sent in the opposite direction can blow the dust out from the rear end of the machine head, which is convenient for cleaning.

[0077] Specifically, in this embodiment, an annular flange is formed on the outer periphery of the rear mesh cover 40, and a mounting groove for accommodating the filter 20 is formed in the annular flange. The filter 20 is embedded and installed in the mounting groove.

[0078] In one example, the annular flange includes a supporting edge extending along the thickness direction of the filter 20, the extension length of the supporting edge is not less than the thickness of the filter 20, the supporting edge is located on the outer peripheral side of the filter 20, and the above-mentioned installation groove is formed between the supporting edge and the rear mesh cover 40.

[0079] Preferably, the annular flange also includes an anti-slip edge, which is arranged at a set angle on the outer periphery of one side of the supporting edge away from the rear mesh cover 40, and the above-mentioned installation groove is formed between the anti-slip edge, the supporting edge and the rear mesh cover 40. The anti-slip edge can effectively prevent the filter 20 from falling out of the installation groove.

[0080] Furthermore, in this embodiment, the vibration bracket 32 ​​is arranged on the side of the filter 20 away from the rear mesh cover 40, and the vibration bracket 32 ​​is in contact with the filter 20. By driving the vibration bracket 32 ​​to reciprocate, the filter 20 is beaten back and forth, so that the filter 20 is reciprocatedly deformed to shake off the dust on the filter 20.

[0081] Of course, in other alternative embodiments, the vibration bracket 32 ​​may also be directly fixedly connected to the filter screen 20 .

[0082] In some embodiments, the vibration bracket 32 ​​includes a connecting portion 321 and a bracket portion 322, the driving mechanism 31 is connected to the connecting portion 321, and the driving mechanism 31 drives the vibration bracket 32 ​​to reciprocate along the axial direction of the filter 20 through the connecting portion 321; the bracket portion 322 is arranged on the outer periphery of the connecting portion 321, and the bracket portion 322 is supported on the side of the filter 20 away from the rear mesh cover 40, and is in contact with the filter 20, and the bracket portion 322 is used to beat the filter 20 when the vibration bracket 32 ​​reciprocates along the axial direction of the filter 20.

[0083] In the above embodiment, the vibration bracket 32 ​​is designed with a connecting portion 321 to facilitate its connection with the driving mechanism 31. The bracket portion 322 is supported on the side of the filter 20 away from the rear mesh cover 40. The bracket portion 322 is in contact with the filter 20, so that when the vibration bracket 32 ​​reciprocates along the axial direction of the filter 20, the bracket portion 322 can beat the filter 20, causing the filter 20 to deform back and forth to form high-frequency vibration, which is more conducive to rapid dust removal.

[0084] In some embodiments, the filter 20 is annular; the maximum outer diameter of the bracket portion 322 is set to d, the inner diameter of the filter 20 is d1, and the outer diameter is d2, d1<d≤d2; the connecting portion 321 includes a disc-shaped connecting body and a hinge seat 3211 fixedly arranged on the side of the connecting body close to the vibration device 30; the driving mechanism 31 is hinged to the hinge seat 3211, and the outer diameter of the connecting body is smaller than the inner diameter of the filter 20.

[0085] In the above embodiment, by setting the maximum outer diameter of the bracket part 322 to be greater than the inner diameter of the filter 20 and less than or equal to the outer diameter of the filter 20, it can be effectively ensured that the bracket part 322 can be in contact with the main part of the filter 20, so as to facilitate the shaking off of the dust on the filter 20. The connection part 321 adopts the design of a disc-shaped connection body, which can effectively ensure the structural strength of the entire vibration bracket 32, and by setting the outer diameter of the connection body to be less than the inner diameter of the filter 20, the connection body is located in the inner ring of the filter 20, which can effectively avoid the connection part 321 blocking the filter 20 and affecting the air permeability of the filter 20. In addition, by setting the hinge seat 3211 on the connection body, it is convenient to connect the driving mechanism 31 with the vibration bracket 32. The driving mechanism 31 and the vibration bracket 32 ​​are connected by a hinged manner, so that the vibration bracket 32 ​​is more flexible and less prone to jamming during movement.

[0086] Specifically, the hinge seat 3211 is fixedly arranged at the center of the disc-shaped connecting body to ensure the balance stability of the entire vibration bracket 32 ​​during the movement. The hinge seat 3211 includes two hinge plates arranged opposite to each other, and hinge holes are respectively opened on the two hinge plates.

[0087] In some embodiments, the bracket portion 322 includes a plurality of brackets spaced apart along the circumference of the connecting portion 321 .

[0088] In the above embodiment, the bracket part 322 adopts a plurality of supporting pieces arranged at intervals along the circumference of the connecting part 321, which can not only ensure that the bracket part 322 can be stably matched with the filter screen 20, but also reduce the shielding of the filter screen 20 by the bracket part 322, thereby ensuring the ventilation effect of the filter screen 20. In addition, the supporting pieces are light in texture, which can reduce the weight of the entire vibration bracket 32, making it easier and more labor-saving to drive.

[0089] Preferably, a plurality of support plates are evenly spaced along the circumference of the connecting portion 321 to avoid uneven distribution of the support plates, which may affect the overall cleaning effect of the filter screen 20 .

[0090] Exemplarily, there are four supporting plates, and the four supporting plates are evenly spaced apart along the circumference of the connecting portion 321 .

[0091] It should be noted that, in this embodiment, the number of the supporting pieces is two or more, and the supporting pieces may also be in the form of rods, nets, or other structures.

[0092] In some embodiments, the driving mechanism 31 includes a vibration motor 311 and a crank-connecting rod mechanism 312. The vibration motor 311 is mounted and fixed on the rear mesh cover 40. The crank-connecting rod mechanism 312 is transmission-connected between the vibration motor 311 and the vibration bracket 32. The vibration motor 311 drives the crank-connecting rod mechanism 312 to move, driving the vibration bracket 32 ​​to reciprocate relative to the filter 20.

[0093] In the above embodiment, the driving mechanism 31 adopts the crank-connecting rod mechanism 312 as a transmission component, which has the advantages of stable and reliable performance, good driving effect and high precision, so that the vibration bracket 32 ​​has higher flexibility, stability and controllability during movement.

[0094] In some embodiments, the crank-connecting rod mechanism 312 includes a crank 3121 and a connecting rod 3122, the crank 3121 is connected to the output end of the vibration motor 311; the two ends of the connecting rod 3122 are respectively hinged to the vibration bracket 32 ​​and the crank 3121; the vibration motor 311 drives the crank 3121 to rotate eccentrically to drive the connecting rod 3122 to reciprocate, thereby driving the vibration bracket 32 ​​to reciprocate relative to the filter 20.

[0095] In the above embodiment, the crank 3121 is an active component that rotates under the drive of the vibration motor 311, and the connecting rod 3122 is a driven component that performs reciprocating swinging motion. During the reciprocating swinging process, the connecting rod 3122 can drive the vibration bracket 32 ​​to reciprocate along the axial direction of the filter 20 relative to the filter 20, thereby causing the filter 20 to deform in the left and right positions, forming high-frequency vibration, and shaking off dust.

[0096] In some embodiments, the rear mesh cover 40 includes a rear seat 41 and a rear mesh 42 installed on the outer periphery of the rear seat 41, and the filter 20 is installed in the rear mesh 42; a motor mounting seat 411 and a rotating shaft support seat 412 are fixedly arranged in the rear seat 41, and the vibration motor 311 is detachably installed and fixed in the motor mounting seat 411; the rotating shaft support seat 412 is provided with an opening slot 4120, and the crank 3121 includes an eccentric wheel 31211, an eccentric shaft 31212, and a support shaft 31213, one end of the eccentric shaft 31212 is eccentrically fixed on the eccentric wheel 31211, and the other end is fixed to the support shaft 31213; the eccentric wheel 31211 is connected and fixed to the output shaft of the vibration motor 311, and the connecting rod 3122 is hinged on the eccentric shaft 31212; the support shaft 31213 is coaxially arranged with the output shaft, and the support shaft 31213 is rotatably placed in the opening slot 4120.

[0097] In the above embodiment, the rear seat 41 is provided to facilitate the installation of the vibration motor 311, and also facilitate the assembly of the entire head and the fuselage. The rear net 42 is provided to play a role of primary filtering, and can block and filter some large floccules and other debris in the incoming air, thereby reducing the pressure of the filter 20. In addition, through the shaft support seat 412 provided in the rear seat 41, the shaft support seat 412 is provided with an open groove 4120, one end of the crank 3121 is connected to the vibration motor 311, and the other end is rotatably placed in the open groove 4120 of the shaft support seat 412, so that the crank 3121 is supported from both ends, which can further improve the stability of the crank 3121 structure, and then improve the stability and reliability of the movement of the entire crank-connecting rod mechanism 312 and the vibration bracket 32.

[0098] Specifically, the motor mounting seat 411 and the rotating shaft support seat 412 are fixed on the rear seat 41 at intervals, and the vibration motor 311 is detachably mounted in the motor mounting seat 411 by screws. Two connecting ears are symmetrically arranged on both sides of the vibration motor 311, and a first screw hole is arranged in the connecting ear. Two second screw holes are correspondingly arranged on the motor mounting seat 411, and the connection and fixation of the vibration motor 311 and the motor mounting seat 411 are realized by connecting the two first screw holes and the two second screw holes correspondingly by two screws. The eccentric wheel 31211 is detachably connected and fixed to the output shaft of the vibration motor 311, and a connecting groove 31210 is provided on the side of the eccentric wheel 31211 close to the vibration motor 311, and the output shaft is interference-fitted in the connecting groove 31210, or, preferably, the connecting groove 31210 is a D-shaped groove, and the end of the output shaft is arranged in a D-shaped shape, and the end of the output shaft is inserted into the D-shaped connecting groove 31210, so as to realize the connection and fixation of the vibration motor 311 and the crank 3121.

[0099] Furthermore, the crank 3121 includes an eccentric wheel 31211, an eccentric shaft 31212, and a support shaft 31213. A connecting groove 31210 is provided at the center of one side wall of the eccentric wheel 31211, and the output shaft of the vibration motor 311 is detachably connected and fixed in the connecting groove 31210. The eccentric shaft 31212 is eccentrically fixed on the other side wall of the eccentric wheel 31211, and the two ends of the connecting rod 3122 are respectively provided with a first shaft hole and a second shaft hole, wherein one end of the connecting rod 3122 is placed in the hinge seat 3211, so that the first shaft hole is concentrically connected with the hinge hole of the vibration bracket 32, and then the shaft pin 3123 is inserted for connection, and the eccentric shaft 31212 of the crank 3121 is connected with the second shaft hole at the other end of the connecting rod 3122. The support shaft 31213 is fixed to the end of the eccentric shaft 31212 through a connecting truncated cone, and the support shaft 31213 is coaxially arranged with the output shaft of the vibration motor 311. A U-shaped opening groove 4120 is arranged on the top surface of the rotating shaft support seat 412, and the support shaft 31213 is rotatably supported in the opening groove 4120. The opening groove 4120 arranged on the top surface of the rotating shaft support seat 412 facilitates the disassembly and assembly of the support shaft 31213.

[0100] It should be noted that, in this embodiment, the driving mechanism 31 includes but is not limited to using one or more crank-connecting rod mechanisms 312 as transmission components. The driving mechanism 31 is not limited to the vibration motor 311 and the crank-connecting rod mechanism 312. Other driving mechanisms such as electric push rods, telescopic motors, etc. that can make the filter screen 20 reciprocate are all within the protection scope of this embodiment.

[0101] In some embodiments, the head also includes an air duct 50, which has an air inlet end and an air outlet end; the fan 10 is arranged in the air duct 50, the filter 20 is located at the air inlet end of the air duct 50, and a fan mounting portion 51 for mounting the fan 10 is provided in the center of the air duct 50; the fan mounting portion 51 is provided with a bracket mounting position 511 for mounting a positioning vibration bracket 32 ​​on one side close to the filter 20.

[0102] In the above embodiment, the filter 20 is arranged at the air inlet end of the air duct 50 to filter the incoming air, and the fan mounting portion 51 can not only install and fix the fan 10, but also install and position the vibration bracket 32, making the internal structure of the head more compact.

[0103] In some embodiments, a limiting structure 512 is provided on the periphery of the bracket mounting position 511 , and the limiting structure 512 cooperates with the vibration bracket 32 ​​to limit the extreme displacement of the vibration bracket 32 ​​moving in a direction close to the filter 20 .

[0104] In the above embodiment, the limiting structure 512 is provided to limit the extreme displacement of the vibration bracket 32 ​​moving in the direction close to the filter screen 20 , thereby effectively preventing the vibration bracket 32 ​​from excessively moving and causing structural damage to the filter screen 20 .

[0105] Optionally, the limiting structure 512 includes a limiting buckle, which is an L-shaped buckle. The limiting buckle can not only limit the vibration bracket 32, but also ensure that the vibration bracket 32 ​​has a certain amount of activity in the axial direction of the filter screen 20.

[0106] Preferably, there are two limit buckles, which are symmetrically arranged on the periphery of the bracket installation position 511 to limit the vibration bracket 32.

[0107] Furthermore, the motor mounting part is a seat structure, and the motor mounting part has a motor mounting position 510 that can accommodate the air supply motor 11. The motor shaft of the air supply motor 11 can extend from the motor mounting position 510 and be connected and fixed to the air supply fan blade 12 located outside the motor mounting position 510. The motor mounting part includes a cylindrical main body and a flange portion formed by bending and extending outward from the outer periphery of the main body. The end of the main body away from the flange portion is closed and has an opening for the motor shaft to pass through. The internal space of the main body forms the motor mounting position 510, and the flange portion forms a bracket mounting position 511 for installing the vibration bracket 32.

[0108] In some embodiments, the fan 10 includes an air supply motor 11 and air supply blades 12, and the air supply motor 11 is connected to the air supply blades 12 for driving the air supply blades 12 to rotate; when the fan is in the air supply mode, the air supply motor 11 drives the air supply blades 12 to rotate forward; when the fan is in the self-cleaning mode, the air supply motor 11 drives the air supply blades 12 to rotate reversely.

[0109] In the above embodiment, the fan 10 adopts the form of an air supply motor 11 and air supply blades 12, with a simple structure and good air supply effect. When the fan is in different modes, the air supply direction can be adjusted by driving the air supply blades 12 to rotate forward or reversely through the air supply motor 11, and the control is relatively convenient and quick.

[0110] Furthermore, the fan 10 further includes a fan blade knob 13, which fixes the air supply fan blade 12 on the motor shaft of the air supply motor 11, and the head further includes a front net 60 arranged at the front end, and specifically, the front net 60 is detachably mounted and fixed on the air outlet end of the air duct 50. The front net 60 can effectively prevent the air supply fan blade 12 from rotating at a high speed, and the user can avoid putting his fingers into the fan when using the fan to cool the human body and air, which may cause danger.

[0111] According to an embodiment of the present utility model, on the other hand, a fan is provided, comprising a body and a head of any one of the above-mentioned embodiments mounted on the body.

[0112] Combine the following Figures 1 to 4 , the specific structure and working principle of the fan and head provided by the utility model are introduced:

[0113] In this embodiment, the motor shaft of the air supply motor 11 passes through the middle hole of the air duct 50 and is installed on the motor mounting part in the middle of the air duct 50. The motor shaft of the air supply motor 11 is in a suspended state and does not contact the air duct 50. The air supply blade 12 passes through the motor shaft of the motor through the mounting hole at the center position, so that the air supply blade 12 and the motor shaft of the air supply motor 11 are in a coaxial state, and then the blade knob 13 is used to fix the air supply blade 12 on the motor shaft of the air supply motor 11. When the air supply motor 11 is powered on to rotate at high speed, the air supply blade 12 will rotate synchronously with the rotation direction of the motor shaft of the air supply motor 11, thereby achieving the air supply effect. When rotating forward, the wind is blown out from the front net 60, and when rotating reversely, the wind is blown out from the rear net 42.

[0114] Furthermore, one end of the connecting rod 3122 having a first axial hole is placed in the hinge seat 3211 of the vibration bracket 32, and the first axial hole is concentrically connected to the hinge hole of the hinge seat 3211, and the axle pin 3123 is inserted for connection, the eccentric shaft 31212 of the crank 3121 is connected to the second axial hole at the other end of the connecting rod 3122, the output shaft of the vibration motor 311 is inserted into the connecting groove 31210 on the eccentric wheel 31211 of the crank 3121, the support shaft 31213 of the crank 3121 is installed in the rotating shaft support seat 412 of the rear seat 41, the vibration motor 311 is installed in the motor mounting seat 411 of the rear seat 41, and fixed on the motor mounting seat 411 by screws, and then the whole is installed on the bracket mounting position 511 on the air duct 50, and then the filter 20 is installed, and finally the rear net 42 is installed on the rear net mounting position 52 on the air duct 50 to complete the fixation.

[0115] Furthermore, the filter 20 is used to filter impurities such as dust and lint in the air. The rear net 42 is mounted on the rear net mounting position 52 on the air duct 50 to complete the fixation, and the front net 60 is mounted on the front net mounting position on the air duct 50 to complete the fixation. The front net 60 and the rear net 42 function to prevent the user from inserting his fingers into the fan when the fan starts to run and start to supply air, thereby preventing the user from using the fan to cool the human body and air and causing danger.

[0116] The fan works as follows:

[0117] When the fan is powered on and the air supply motor 11 is started, the air supply motor 11 drives the air supply blades 12 to start rotating forward to discharge air, and the air outside the fan is sucked into the air duct 50 through the rear net 42 and the filter 20, respectively, and clean air is blown out, and dust and the like will be intercepted on the outside by the filter 20. When the user does not need to use the fan, the fan standby is clicked, and the fan automatically enters the self-cleaning mode. At this time, the air supply motor 11 reverses, driving the air supply blades 12 to blow air in the opposite direction, and the air outside the fan enters from the front net 60 and is blown out from the rear net 42. At the same time, the vibration motor 311 drives the crank 3121 to move, and then drives the connecting rod 3122 to move. Since the crank 3121 is provided with an eccentric shaft 31212, the vibration bracket 32 ​​will reciprocate along the axial direction, and then drive the filter 20 to move. The filter 20 will shake off the dust attached to its surface during the movement process, and the air supply blades 12 will reverse and blow out the dust, achieving a self-cleaning effect.

[0118] In this embodiment, the self-cleaning mode can be automatically turned on after each use of the fan to increase the cleaning frequency and reduce the amount of accumulated dust. When the self-cleaning mode is turned on, the vibration motor 311 rotates the crank connecting rod mechanism 312 to drive the vibration bracket 32 ​​to perform rapid reciprocating motion, so that the filter 20 is deformed in position, and the filter 20 is re-formed to vibrate at a high frequency to shake off the dust. At this time, the air supply motor 11 drives the air supply blades 12 to reverse, and the wind sent in the opposite direction can blow out the dust, thereby achieving the effect of cleaning the filter 20.

[0119] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A head, applied to a fan, characterized in that: The machine head comprises: Fan (10); A filter (20) for filtering air; a vibration device (30), cooperating with the filter screen (20) and used to drive the filter screen (20) to vibrate; The fan has an air supply mode and a self-cleaning mode. When the fan is in the air supply mode, the fan (10) rotates forward so that the air is filtered by the filter (20) and then blown out from the front end of the head. When the fan is in the self-cleaning mode, the vibration device (30) drives the filter (20) to reduce the adhesion of dust thereon, and the fan (10) reverses to blow the dust out from the rear end of the machine head.

2. The head according to claim 1, characterized in that: The machine head further comprises a rear mesh cover (40), and the filter screen (20) is installed in the rear mesh cover (40); The vibration device (30) comprises a driving mechanism (31) and a vibration bracket (32), and the filter screen (20) is clamped between the vibration bracket (32) and the rear mesh cover (40); The driving mechanism (31) is mounted on the rear mesh cover (40) and connected to the vibration bracket (32). The driving mechanism (31) drives the vibration bracket (32) to reciprocate so as to beat the filter screen (20) to generate high-frequency vibration.

3. The head according to claim 2, characterized in that: The vibration support (32) comprises: A connecting portion (321), the driving mechanism (31) being connected to the connecting portion (321), and the driving mechanism (31) drives the vibration support (32) to reciprocate along the axial direction of the filter screen (20) via the connecting portion (321); The bracket portion (322) is arranged on the outer periphery of the connecting portion (321), and the bracket portion (322) is supported on a side of the filter screen (20) away from the rear mesh cover (40), and is in contact with and cooperates with the filter screen (20).

4. The head according to claim 3, characterized in that: The filter screen (20) is annular; The maximum outer diameter of the bracket portion (322) is set to d, the inner diameter of the filter screen (20) is set to d1, and the outer diameter is set to d2, d1<d≤d2; and / or, The connecting portion (321) comprises a disc-shaped connecting body and a hinge seat (3211) fixedly arranged on a side of the connecting body close to the vibration device (30); The driving mechanism (31) is hinged to the hinge seat (3211), and the outer diameter of the connecting body is smaller than the inner diameter of the filter screen (20).

5. The handpiece according to claim 3, characterized in that: The bracket portion (322) includes a plurality of brackets arranged at intervals along the circumferential direction of the connecting portion (321).

6. The handpiece according to any one of claims 2 to 5, characterized in that: The driving mechanism (31) comprises: A vibration motor (311) is mounted and fixed on the rear mesh cover (40); A crank-connecting rod mechanism (312) is transmission-connected between the vibration motor (311) and the vibration bracket (32); the vibration motor (311) drives the crank-connecting rod mechanism (312) to move, thereby driving the vibration bracket (32) to reciprocate relative to the filter screen (20).

7. The handpiece according to claim 6, characterized in that: The crank-connecting rod mechanism (312) comprises: A crank (3121) connected to the output end of the vibration motor (311); A connecting rod (3122), two ends of which are respectively hinged to the vibration support (32) and the crank (3121); The vibration motor (311) drives the crank (3121) to rotate eccentrically to drive the connecting rod (3122) to reciprocate, thereby driving the vibration bracket (32) to reciprocate relative to the filter (20).

8. The handpiece according to claim 7, characterized in that: The rear net cover (40) comprises a rear seat (41) and a rear net (42) installed on the outer periphery of the rear seat (41), and the filter (20) is installed in the rear net (42); A motor mounting seat (411) and a rotating shaft support seat (412) are fixedly arranged in the rear seat (41), and the vibration motor (311) is detachably mounted and fixed in the motor mounting seat (411); The rotating shaft support seat (412) is provided with an open groove (4120), the crank (3121) comprises an eccentric wheel (31211), an eccentric shaft (31212), and a support shaft (31213), one end of the eccentric shaft (31212) is eccentrically fixed on the eccentric wheel (31211), and the other end is fixed to the support shaft (31213); The eccentric wheel (31211) is connected and fixed to the output shaft of the vibration motor (311), and the connecting rod (3122) is hinged on the eccentric shaft (31212); The support shaft (31213) is coaxially arranged with the output shaft, and the support shaft (31213) is rotatably placed in the open groove (4120).

9. The handpiece according to any one of claims 2 to 5, characterized in that: The head also includes an air duct (50), wherein the air duct (50) has an air inlet end and an air outlet end; The fan (10) is arranged in the air duct (50), the filter (20) is located at the air inlet end of the air duct (50), and a fan mounting portion (51) for mounting the fan (10) is provided at the center of the air duct (50); A bracket mounting position (511) for mounting and positioning the vibration bracket (32) is provided on one side of the fan mounting portion (51) close to the filter screen (20).

10. The handpiece according to claim 9, characterized in that: A limiting structure (512) is provided on the periphery of the bracket installation position (511); The limiting structure (512) cooperates with the vibration support (32) to limit the extreme displacement of the vibration support (32) in a direction approaching the filter screen (20).

11. The handpiece according to claim 9, characterized in that: The fan (10) comprises: Air supply motor (11); An air supply blade (12), the air supply motor (11) being connected to the air supply blade (12) and being used for driving the air supply blade (12) to rotate; When the fan is in the air supply mode, the air supply motor (11) drives the air supply blades (12) to rotate in the forward direction; when the fan is in the self-cleaning mode, the air supply motor (11) drives the air supply blades (12) to rotate in the reverse direction.

12. A fan, characterized in that: The invention comprises a fuselage and a head according to any one of claims 1 to 11 mounted on the fuselage.

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