Fan with built-in automatic pitching mechanism

Abstract

The fan with the built-in automatic pitching mechanism comprises a stand column and a machine head, the machine head comprises a front mesh enclosure, a middle ring shell, a rear mesh enclosure, fan blades and a main motor, a pitching frame is arranged at the top of the stand column, a pitching guide sliding shaft sleeve is fixedly arranged at the top of the pitching frame, and a machine head support and a motor support are fixedly arranged in the machine head. Pitching connecting plates are fixedly installed on the two sides of the machine head support, a pitching motor is arranged on the motor support, a small gear is installed on a motor shaft of the pitching motor, and a large gear meshed with the small gear is fixedly arranged at the end of a pitching guide sliding shaft sleeve. The pitching frame extending into the rear mesh enclosure is arranged at the top of the stand column, the machine head support and the pitching support are hinged through the machine head support, the pitching connecting plate and the pitching guide sliding shaft sleeve, the pitching motor drives the small gear to deflect along the large gear and the pitching guide sliding shaft sleeve, and therefore the machine head support deflects along the top of the pitching frame, and the pitching effect is achieved. Therefore, the pitch angle of the machine head can be automatically adjusted, the structure is compact, the cost is low, and the size is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of air flow, and particularly relates to a fan with a built-in automatic pitch mechanism. Background Art

[0002] Electric fans have a simple structure, are easy to operate, consume little power, and are low in price, making them one of the most commonly used household appliances by residents. The existing electric fan's shaking head and the up and down swing head angle adjustment are all set on the head of the machine, which not only easily increases the burden on the fan support, but also when the shaking head assembly fails, there will be problems when adjusting the pitch angle of the up and down swing heads, making the fan extremely inconvenient to use. Therefore, a large number of circulating fans have appeared in recent years. The existing circulating fans use two methods to achieve rotation circulation. One is that the base and the column rotate together to circulate the wind. The applicant applied for this circulating fan in January 2021-2022, and the other is in The column is fixed as a whole and remains unchanged. A rotating bracket is used on the top. The rotating bracket is rotated along the central axis of the column through the internal motor under the action of the eccentric wheel and the connecting rod to achieve the rotation purpose. The applicant applied for this rotating structure in 2022-2023, and then adjusted the pitch angle of the upper and lower swing heads. The applicant previously adopted a non-automatic structure. When the upper and lower angles need to be adjusted, the user directly manually adjusts the up and down position of the head. After adjusting into place, a limit pin is used on the side wall of the articulated sleeve for limit fixing. This structure has limited adjustment position for the upper and lower swing heads to adjust the pitch angle, and cannot achieve the purpose of automatically adjusting the pitch angle.

[0003] The applicant applied for an up and down swing circulating fan in March 2023. The structure is provided with a rotating bracket on the top of the column, and a pitch bracket is fixed on the top of the rotating bracket. A U-shaped groove for accommodating the machine head is provided in the middle of the pitch bracket, and the two ends of the rear shell of the machine head are hinged on the wall of the U-shaped groove through a pitch rotating sleeve. A pitch motor is fixed in the machine head, and the eccentric wheel and the connecting rod are fixedly connected through the pitch motor. The connecting rod is connected to the eccentric point of the pitch rotating sleeve. When the motor is energized, the eccentric wheel and the connecting rod are driven to rotate, and the pitch rotating sleeve is driven to rotate. The pitch rotating sleeve is fixed to the pitch bracket by bolts. Under the reaction force, the eccentric wheel, the connecting rod and the motor are deflected along the center line of the pitch rotating sleeve, thereby realizing automatic adjustment of the pitch angle of the rear shell of the machine head. The structure is compact and the cost is low. This method adopts an external pitch mechanism, and the pitch mechanism is arranged on the back of the rear mesh cover. The present application will further optimize the pitch bracket structure, so that the pitch mechanism adopts an internal type, and the pitch mechanism is arranged in the rear mesh cover, so that the machine head transmission is more stable and the volume is smaller. Summary of the invention

[0004] The utility model provides a fan with a built-in automatic pitch mechanism. The fan with a built-in automatic pitch mechanism is provided with a pitch frame on the top of a column, a receiving groove for receiving the pitch frame is provided on the lower part of a rear mesh cover, a head bracket, a pitch connecting plate and a pitch guide sliding shaft sleeve are utilized to hinge the head bracket and the pitch bracket, a pitch motor is provided on the motor bracket, the pitch motor drives a small gear to deflect along a large gear and a pitch guide sliding shaft sleeve, so that the head bracket is deflected along the top of the pitch frame, thereby realizing automatic adjustment of the pitch angle of the head, and the utility model has a compact structure, low cost and small size.

[0005] In order to solve the above technical problems, the utility model provides a fan with a built-in automatic pitch mechanism, comprising a chassis, a column arranged on the chassis and a head arranged on the top of the column, the head comprising a front mesh cover, a middle ring shell and a rear mesh cover which are arranged in sequence, a fan blade and a main motor for driving the fan blade to rotate are arranged in the head, a pitch frame is arranged on the top of the column, a receiving groove for the pitch frame to extend into the rear mesh cover is arranged at the lower part of the rear mesh cover, a pair of symmetrically arranged pitch guide sliding sleeves are fixedly arranged on the top of the pitch frame, a head bracket is fixedly arranged near the pitch frame in the head, pitch connecting plates mounted on the pitch guide sliding sleeves are fixedly installed on the side walls on both sides of the head bracket, a motor bracket is arranged near the head bracket in the head, a pitch motor is arranged on the motor bracket, a pinion is installed on the motor shaft of the pitch motor, and a large gear meshing with the pinion is fixedly arranged at one end of the pitch guide sliding sleeve.

[0006] Furthermore, the motor bracket is installed at the middle part of the rear mesh cover, and a U-shaped groove through which the pitch frame passes is arranged at the bottom of the motor bracket.

[0007] Furthermore, the head bracket is installed in the motor bracket, the pitch motor is installed on the side wall of the head bracket, and an anti-insulation pressing sheet and a wire pressing block for fixing the wires are arranged in the motor bracket.

[0008] Furthermore, a main motor mounting tube is installed on the side wall of the motor bracket close to the middle ring shell, and the main motor is installed in the main motor mounting tube. One end of the motor shaft of the main motor extends out of the main motor mounting tube and passes through the fan blade and is connected to the fan blade mounting nut.

[0009] Furthermore, the pitch frame includes a pitch rear bracket, a pitch front bracket detachably mounted on the pitch rear bracket, and a pitch cover plate detachably mounted on the pitch front bracket, the pitch guide sleeve is mounted on the top of the pitch rear bracket, and a deflection mechanism is provided between the bottom of the pitch frame and the column.

[0010] Furthermore, the deflection mechanism includes a deflection motor arranged in a column, a deflection gear sleeved in the column, a wear-resistant sleeve and a rotating frame, a mounting groove for accommodating the rotating frame is arranged on the bottom of the pitch rear bracket, a mounting hole for fixedly connecting with the rotating frame is arranged on the mounting groove, a fixed shaft is arranged on the rotating frame, the lower part of the fixed shaft passes through the mounting groove and is fixedly installed on the deflection gear, and the wear-resistant sleeve is arranged between the deflection gear and the rotating frame.

[0011] Furthermore, a lampshade, an ambient lampshade, a light blocking ring and a lamp panel bracket are sequentially arranged on the front mesh cover.

[0012] Furthermore, an operation panel is detachably mounted on the column, a circuit board is arranged on the inner wall of the operation panel, and a display bracket and a display window are arranged on the outer surface of the operation panel.

[0013] Furthermore, the base is provided with a chassis, a counterweight block and a chassis cover in sequence from bottom to top.

[0014] Furthermore, the column includes an upper column and a lower column, the lower column is sleeved with a column liner for lifting, a threaded connection sleeve and a shaft sleeve are arranged between the upper column and the lower column, a threaded connection sleeve I is arranged between the lower column and the column liner, and a fixing knob is arranged on the side wall of the lower column.

[0015] The beneficial effects of the utility model are:

[0016] The utility model discloses a fan with a built-in automatic pitch mechanism, wherein a pitch frame is arranged on the top of a column, a receiving groove for receiving the pitch frame is arranged on the lower part of a rear mesh cover, a head bracket, a pitch connecting plate and a pitch guide sliding shaft sleeve are utilized to hinge the head bracket and the pitch bracket, a pitch motor is arranged on the motor bracket, the pitch motor drives a small gear to deflect along a large gear and the pitch guide sliding shaft sleeve, so that the head bracket is deflected along the top of the pitch frame, thereby realizing automatic adjustment of the pitch angle of the head, and the utility model has a compact structure, low cost and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a fan with a built-in automatic pitch mechanism according to the present invention;

[0018] FIG2 is a cross-sectional view of a fan with a built-in automatic pitch mechanism according to the present invention;

[0019] FIG3 is an exploded schematic diagram of a fan head with a built-in automatic pitch mechanism according to the present invention;

[0020] FIG4 is an exploded schematic diagram of an automatic pitch mechanism in a fan with a built-in automatic pitch mechanism according to the present invention;

[0021] FIG5 is an exploded schematic diagram of a lighting mechanism in a fan with a built-in automatic pitch mechanism according to the present invention;

[0022] FIG6 is an exploded schematic diagram of a deflection mechanism in a fan with a built-in automatic pitch mechanism according to the present invention;

[0023] FIG. 7 is an exploded schematic diagram of a base of a fan with a built-in automatic pitch mechanism according to the present invention.

[0024] Figure numerals: 1-column; 2-machine head; 3-base; 4-pitch frame; 5-rear mesh cover; 6-front mesh cover; 7-middle circle shell; 8-main motor; 9-fan blade; 10-main motor mounting tube; 11a-pitch rear bracket; 11b-pitch front bracket; 12-deflection motor; 13-deflection gear; 14-rotating frame; 15-operation panel; 16-circuit board; 17-lamp cover; 18-atmosphere lamp cover; 19-aperture ring; 20-lamp board bracket; 21-fan blade mounting nut; 22-connecting buckle; 23-pitch cover; 24-motor bracket; 25-pitch motor; 26-small tooth Wheel; 27-large gear; 28-pitch connecting plate; 29-pitch guide sleeve; 30-head bracket; 31-anti-insulation pressure piece; 32-pressing block; 33-display bracket; 34-display window; 35-installation slot; 36-installation positioning hole; 37-lower column; 38-threaded connection sleeve; 39-sleeve; 40-column liner; 41-chassis cover; 42-counterweight; 43-chassis; 44-threaded connection sleeve I; 45-fixing knob; 46-center hole; 47-guide slide shaft; 48-threaded connection through hole; 49-threaded connection hole; 50-connection through hole; 51-connection hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] like Figure 1-7The utility model is a structural schematic diagram of a fan with a built-in automatic pitch mechanism, which comprises a chassis 3, a column 1 arranged on the chassis 3, and a head 2 arranged on the top of the column 1. The head 2 comprises a front mesh cover 6, a middle ring shell 7 and a rear mesh cover 5 arranged in sequence. A fan blade 9 and a main motor 8 for driving the fan blade to rotate are arranged in the head 2. A pitch frame 4 is arranged on the top of the column 1. A receiving groove for the pitch frame 4 to extend into the rear mesh cover is arranged at the lower part of the rear mesh cover 5. The pitch frame 4 A pair of symmetrically arranged pitch guide sliding sleeves 29 are fixedly arranged on the top, a head bracket 30 is fixedly arranged near the pitch frame 4 in the head 2, and pitch connecting plates 28 mounted on the pitch guide sliding sleeves 29 are fixedly arranged on the side walls on both sides of the head bracket 30, a motor bracket 24 is arranged near the head bracket 30 in the head 2, a pitch motor 25 is arranged on the motor bracket 24, a small gear 26 is installed on the motor shaft of the pitch motor 25, and a large gear 27 meshing with the small gear is fixedly arranged at the end of a pitch guide sliding sleeve 29.

[0027] In this embodiment, a pitch frame 4 is arranged on the top of the column 1, and a receiving groove for receiving the pitch frame is arranged on the lower part of the rear mesh cover 5. The head bracket 30, the pitch connecting plate 28 and the pitch guide sliding shaft sleeve 29 are used to hinge the head bracket 30 and the pitch bracket 4. A pitch motor 25 is arranged on the motor bracket. The pitch motor 25 drives the small gear 26 to deflect along the large gear 27 and the pitch guide sliding shaft sleeve 29, so that the head bracket 30 is deflected along the top of the pitch frame 4, so that the head can automatically adjust the pitch angle. The structure is compact, the cost is low, and the volume is small.

[0028] During use, the structure of this embodiment can be installed on a floor fan or a desktop fan, and the head bracket 30 is movably connected with the pitch guide sleeve 29 through the pitch connecting plate 28. During implementation, the main motor 8 is used to drive the fan blades 9 to rotate to achieve blowing. During the blowing process, the small gear 26 is driven to rotate by the pitch motor 25. At this time, the large gear 27 and the pitch guide sleeve 29 are fixed on the top of the pitch frame 4. Under the reaction of the large gear 27, the small gear 26, the pitch motor 25 and the motor bracket 30 are arranged as a whole and deflect along the center of the large gear 27. The head 2 and the motor bracket 30 are arranged as a whole, and the head can adjust the pitch angle as the motor bracket 30 deflects.

[0029] In a preferred embodiment, the motor bracket 24 is installed in the middle of the rear mesh cover 5, and a U-shaped groove through which the pitch frame 4 passes is provided at the bottom of the motor bracket 24. This structure of the present embodiment is conducive to setting the pitch frame 4 inside the nose 2, so that the automatic pitch mechanism can be arranged inside the nose, which can make the fan structure compact as a whole, and at the same time, the fan looks more natural and beautiful, which conforms to the preferences of the public.

[0030] In a preferred embodiment, the head bracket 30 is installed in the motor bracket 24, the pitch motor 25 is installed on the side wall of the head bracket 30, and the motor bracket 24 is provided with an anti-insulation pressing piece 31 and a wire pressing block 32 for fixing the wires. In this embodiment, the structure integrates the pitch motor 25 and the main motor 8 on the motor bracket 24 at the same time, which is conducive to making the head structure more compact, the overall weight of the head more balanced, and facilitating the transmission of the pitch point motor and the main motor, avoiding excessive friction and wear of the connection parts.

[0031] In a preferred embodiment, a main motor mounting tube 10 is installed on the side wall of the motor bracket 24 close to the middle circle shell 7, and the main motor 8 is installed in the main motor mounting tube 10. One end of the motor shaft of the main motor extends out of the main motor mounting tube and passes through the fan blade 9 and is connected to the fan blade mounting nut 21. This structure of the present embodiment is conducive to installing and fixing the main motor. The main motor mounting tube 10 is fixed to the motor bracket 24, which facilitates the integration of the pitch motor 25 and the main motor 8 on the motor bracket 24 at the same time, which is conducive to making the head structure more compact and the overall weight of the head more balanced.

[0032] In a preferred embodiment, the pitch frame 4 includes a pitch rear bracket 11a, a pitch front bracket 11b detachably mounted on the pitch rear bracket 11a, and a pitch cover plate 23 detachably mounted on the pitch front bracket 11b. A pitch guide sleeve 29 is mounted on the top of the pitch rear bracket 11a. A deflection mechanism is provided between the bottom of the pitch frame 4 and the column. This structure of the present embodiment facilitates the processing of the pitch frame and the installation and fixing of the automatic pitch mechanism.

[0033] In a preferred embodiment, the deflection mechanism includes a deflection motor 12 arranged in the column 1, a deflection gear 13 mounted in the column, a wear-resistant sleeve and a rotating frame 14. A mounting groove 35 for accommodating the rotating frame is provided on the bottom of the pitch rear bracket 11a, and a mounting hole for fixedly connecting with the rotating frame 14 is provided on the mounting groove 35. A fixed shaft is provided on the rotating frame 14, and the lower part of the fixed shaft passes through the mounting groove and is fixedly installed on the deflection gear 13. The wear-resistant sleeve is provided between the deflection gear 13 and the rotating frame 14. The structure of this embodiment is conducive to the back and forth deflection of the machine head under the action of the deflection mechanism, realizing rotational blowing and expanding the blowing range.

[0034] In a preferred embodiment, a lampshade 17, an atmosphere lampshade 18, an aperture 19 and a lamp board bracket 20 are sequentially arranged on the front mesh cover 6. This structure of the present embodiment is conducive to realizing lighting and atmosphere lamp effects. Voltage is provided to the lamp board bracket 20 through the circuit board to realize lighting and atmosphere lamp effects on the front mesh cover 6, which is conducive to improving the application range of the fan.

[0035] In a preferred embodiment, an operation panel 15 is detachably mounted on the column 1, a circuit board 16 is arranged on the inner wall of the operation panel 15, and a display bracket 33 and a display window 34 are arranged on the outer surface of the operation panel 15. This structure of the present embodiment is conducive to the simultaneous display of the fan speed and blowing mode by the operation panel 15 and the display window 34.

[0036] In a preferred embodiment, the base 3 is provided with a chassis 43, a counterweight 42 and a chassis cover 41 in sequence from bottom to top. This structure of the present embodiment makes the electric fan suitable for a floor fan, and the column support is realized under the head 2 through the chassis 43, the counterweight 42 and the chassis cover 41.

[0037] In a preferred embodiment, the column 1 includes an upper column and a lower column 37, the lower column 37 is equipped with a column inner shell 40 for lifting, a threaded connection sleeve 38 and a shaft sleeve 39 are arranged between the upper column and the lower column 37, a threaded connection sleeve I49 is arranged between the lower column 37 and the column inner shell 40, and a fixing knob 45 is arranged on the side wall of the lower column. The structure of this embodiment is convenient for adjusting the height of the column 1, so as to realize the height adjustment of the machine head.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A fan with a built-in automatic pitch mechanism, comprising a column and a head arranged on the top of the column, the head comprising a front mesh cover, a middle ring shell and a rear mesh cover arranged in sequence, a fan blade and a main motor driving the fan blade to rotate are arranged in the head, characterized in that: A pitch frame is arranged on the top of the column, and a receiving groove for the pitch frame to extend into the rear mesh cover is arranged at the lower part of the rear mesh cover, a pair of symmetrically arranged pitch guide sliding sleeves are fixedly arranged on the top of the pitch frame, a head bracket is fixedly arranged in the head near the pitch frame, and pitch connecting plates mounted on the pitch guide sliding sleeves are fixedly installed on the side walls on both sides of the head bracket, a motor bracket is arranged in the head near the head bracket, a pitch motor is arranged on the motor bracket, a small gear is installed on the motor shaft of the pitch motor, and a large gear meshing with the small gear is fixedly arranged on the end of the pitch guide sliding sleeve.

2. A fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: The motor bracket is installed at the middle part of the rear net cover, and a U-shaped groove through which the pitch frame passes is arranged at the bottom of the motor bracket.

3. A fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: The head bracket is installed in the motor bracket, the pitch motor is installed on the side wall of the head bracket, and an anti-insulation pressing sheet and a wire pressing block for fixing the electric wires are arranged in the motor bracket.

4. A fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: A main motor mounting tube is installed on the side wall of the motor bracket close to the middle ring shell, and the main motor is installed in the main motor mounting tube. One end of the motor shaft of the main motor extends out of the main motor mounting tube and passes through the fan blade and is connected with a fan blade mounting nut.

5. A fan with a built-in automatic pitch mechanism according to any one of claims 1 to 4, characterized in that: The pitch frame includes a pitch rear bracket, a pitch front bracket detachably mounted on the pitch rear bracket, and a pitch cover plate detachably mounted on the pitch front bracket. The pitch guide sleeve is mounted on the top of the pitch rear bracket. A deflection mechanism is arranged between the bottom of the pitch frame and the column.

6. A fan with a built-in automatic pitch mechanism according to claim 5, characterized in that: The deflection mechanism includes a deflection motor arranged in a column, a deflection gear sleeved in the column, a wear-resistant sleeve and a rotating frame. A mounting groove for accommodating the rotating frame is arranged on the bottom of the pitch rear bracket, and a mounting hole for fixedly connecting with the rotating frame is arranged on the mounting groove. A fixed shaft is arranged on the rotating frame, and the lower part of the fixed shaft passes through the mounting groove and is fixedly installed on the deflection gear. The wear-resistant sleeve is arranged between the deflection gear and the rotating frame.

7. A fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: The front mesh cover is provided with a lampshade, an ambient lampshade, a light blocking ring and a lamp panel bracket in sequence.

8. The fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: An operation panel is detachably mounted on the column, a circuit board is arranged on the inner wall of the operation panel, and a display bracket and a display window are arranged on the outer surface of the operation panel.

9. The fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: A base is arranged at the bottom of the column, and a chassis, a counterweight block and a chassis cover are arranged on the base in sequence from bottom to top.

10. A fan with a built-in automatic pitch mechanism according to claim 1, characterized in that: The column includes an upper column and a lower column, the lower column is sleeved with a column liner for lifting, a threaded connection sleeve and a shaft sleeve are arranged between the upper column and the lower column, a threaded connection sleeve I is arranged between the lower column and the column liner, and a fixing knob is arranged on the side wall of the lower column.

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