Fan blade capable of adjusting angle of rotating blade

Abstract

The utility model discloses a fan blade capable of adjusting the angle of a rotating blade in the field of fan blades, which comprises a fan blade base, the fan blade base is of a polygonal structure, and each edge of the fan blade base is fixedly connected with a gear box assembly. The gearbox assembly further comprises a bottom cover, a bearing cover arranged on one side of the bottom cover, a bearing frame arranged on one side of the bearing cover, a fan blade shaft rotationally arranged between the bearing frame and the bearing cover, and a second bearing arranged on the periphery of the fan blade shaft and located between the bearing cover and the bearing frame. The gear is arranged on the periphery of the fan blade shaft and located between the bearing cover and the bottom cover. The mechanism with the blade rotation adjusting function is installed in the fan blades of the fan, the conversion mechanism is designed to convert the rotation force of the stepping motor into the force for rotating the blade angles of the fan blades, when the fan blades rotate at a high speed, angle rotation adjustment of the fan blades cannot be affected, and the rotation angle of the fan blades can be adjusted through adjustment of the stepping motor. The fan blades can be changed at will within a certain angle, stepless adjustment is achieved, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fan blades, specifically a fan blade with adjustable rotating blade angle. Background Technology

[0002] Currently, most mechanical fans on the market have fixed blade angles. This limitation means the fan can only provide a single wind speed and airflow, failing to meet users' diverse requirements for wind speed and airflow in different environments and needs. For example, in the hot summer, people may need a high airflow for rapid cooling; while in less hot weather or while sleeping, a lower airflow is more suitable. However, existing fans with fixed blade angles cannot be flexibly adjusted, causing inconvenience to users and limiting the fan's usage scenarios and functionality. Furthermore, while an adjustable-angle fan blade design (application number 202320382164.X) allows for blade angle adjustment, the adjustment process requires manual operation, and the adjustment angle is limited by the fixed position of the blades, preventing stepless adjustment and making operation inconvenient.

[0003] Therefore, those skilled in the art have provided a fan blade with an adjustable rotating blade angle to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a fan blade with an adjustable rotating blade angle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fan blade with adjustable rotating blade angle includes a fan blade base, the fan blade base having a polygonal structure, and a gearbox assembly fixedly connected to each side of the fan blade base. The gearbox assembly further includes a bottom cover, a bearing cover disposed on one side of the bottom cover, a bearing bracket disposed on one side of the bearing cover, a fan blade shaft rotatably disposed in the middle of the bearing bracket and the bearing cover, a second bearing disposed on the periphery of the fan blade shaft between the bearing cover and the bearing bracket, a gear disposed on the periphery of the fan blade shaft between the bearing cover and the bottom cover, a rack movably disposed between the bottom cover and the bearing cover, a second guide shaft fixed inside the bottom cover and slidably connected to a protrusion on the side wall of the rack, and a spring clamped on the periphery of the second guide shaft between the protrusion on the side wall of the rack and the bottom of the bottom cover. The bearing cover, the bottom cover, and the bearing bracket are all connected by screws. The rack meshes with the gear. The fan blade shaft is rotatably connected to the bearing bracket and the bearing cover via the second bearing. A fan blade is fixedly connected to the end of the fan blade shaft.

[0007] As a further embodiment of this utility model: a motor is threadedly connected to the bottom of the fan blade base, a bracket is fixedly connected to the bottom of the motor, a rear mesh is connected to the bottom of the bracket by screws, a front mesh is fastened to the outer periphery of the rear mesh by fasteners, and the output shaft of the motor is connected to the fan blade base by key transmission.

[0008] As a further embodiment of this utility model, it also includes a motor bracket and a stepper motor mounted on the electrode bracket by screws. The output shaft of the stepper motor is connected to a shaft bracket by screws. A guide shaft is fixedly connected to one side of the bottom of the shaft bracket. A lead screw is connected to the output shaft of the stepper motor by a keyway. A movable seat cover is connected to the outer side of the lead screw by threads. The movable seat cover is slidably connected to the guide shaft.

[0009] As a further embodiment of this utility model: the movable seat cover slides in the middle of the motor bracket, and a movable base is slidably connected to the bottom periphery of the motor bracket. The connecting ear of the movable seat cover extends out from the groove at the bottom of the side wall of the motor bracket and is connected to the movable base by screws. A bearing is provided on the periphery of the movable base, and a bearing seat is provided on the periphery of the bearing. The bearing is pressed and installed inside the bearing seat by anti-slip screws. The bearing seat is connected to the rack by screws, and the bearing seat is pressed between the movable base and the movable seat cover.

[0010] As a further improvement of this utility model: the angle occupied by the tooth profile of the gear in the gearbox assembly that meshes with the rack is 180 degrees.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention designs a mechanism for adjusting the rotation of the blades and installs it in the fan blades. By designing a conversion mechanism, the force of the stepper motor rotation is converted into the force for the fan blades to rotate at an angle. When the fan blades rotate at high speed, it does not affect the adjustment of the fan blade angle. Moreover, by adjusting the stepper motor, the fan blades can be adjusted arbitrarily within a certain angle, with stepless adjustment, which is extremely convenient and fast. Attached Figure Description

[0013] Figure 1 This is a diagram of the internal structure of the present invention;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is an exploded view of the gearbox assembly in this utility model;

[0016] Figure 4 In this utility model Figure 2A magnified view of a portion of the motor support area;

[0017] Figure 5 This is a transmission diagram of the present invention.

[0018] In the diagram: 1. Fan blade base; 2. Bracket; 3. Motor; 4. Rear grille; 5. Front grille; 6. Fan blade; 7. Gearbox assembly; 701. Bottom cover; 702. Rack; 703. Guide shaft two; 704. Spring; 705. Gear; 706. Bearing cover; 707. Bearing two; 708. Bearing bracket; 709. Fan blade shaft; 8. Motor bracket; 9. Bearing one; 10. Movable base; 11. Bearing seat; 12. Anti-slip screw; 13. Movable base cover; 14. Lead screw; 15. Guide shaft one; 16. Shaft bracket; 17. Stepper motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 In this embodiment of the present invention, a fan blade 6 with adjustable rotating blade angle includes a fan blade base 1. The fan blade base 1 has a polygonal structure, and a gearbox assembly 7 is fixedly connected to each side of the fan blade base 1. The gearbox assembly 7 further includes a bottom cover 701, a bearing cover 706 disposed on one side of the bottom cover 701, a bearing bracket 708 disposed on one side of the bearing cover 706, a fan blade shaft 709 rotatably disposed in the middle of the bearing bracket 708 and the bearing cover 706, a bearing 707 disposed around the fan blade shaft 709 between the bearing cover 706 and the bearing bracket 708, and a bearing 707 disposed around the fan blade shaft 709 around the bearing cover 706. The gear 705 between the bottom cover 701 and the bottom cover 701, the rack 702 movably disposed between the bottom cover 701 and the bearing cover 706, the guide shaft 703 fixed inside the bottom cover 701 and slidably connected to the side wall protrusion of the rack 702, and the spring 704 clamped around the guide shaft 703 and located between the side wall protrusion of the rack 702 and the bottom of the bottom cover 701, the bearing cover 706 is connected to the bottom cover 701 and the bearing bracket 708 by screws, the rack 702 is meshed with the gear 705, the fan blade shaft 709 is rotatably connected to the bearing bracket 708 and the bearing cover 706 by the bearing 707, and the fan blade 6 is fixedly connected to the end of the fan blade shaft 709.

[0021] By adopting the above technical solution, the rack 702 moves up and down under the guidance of the guide shaft 703. Under the meshing transmission of the rack 702 and the gear 705, the fan blade shaft 709 can be driven to rotate under the guidance of the bearing, bearing bracket 708 and bearing cover 706. In turn, the fan blade 6 connected to the fan blade shaft 709 can be driven to rotate, thereby realizing the adjustment of the rotation angle of the fan blade 6. The up and down movement of the rack 702 can be converted into the adjustment of the rotation angle of the fan blade 6, which can realize the adjustment of air volume and the better performance.

[0022] The fan blade base 1 is connected to the bottom of the fan blade base 1 by a threaded connection. The bottom of the fan blade base 1 is fixedly connected to the bracket 2. The bottom of the bracket 2 is connected to the rear net 4 by a screw. The upper periphery of the rear net 4 is fastened to the front net 5 by a fastener. The output shaft of the fan blade base 1 is connected to the fan blade base 1 by a key drive. The fan blade base 1 can be driven to rotate by the fan blade base 1 by the motor 3, which in turn drives the fan blade 6 to rotate along the central axis of the motor 3. The motor 3 adopts a hollow structure, which facilitates wiring.

[0023] Furthermore, it also includes a motor bracket 8 and a stepper motor 17 mounted on the electrode bracket 2 by screws. The output shaft of the stepper motor 17 is connected to a shaft bracket 16 by screws. A guide shaft 15 is fixedly connected to one side of the bottom of the shaft bracket 16. A lead screw 14 is connected to the output shaft of the stepper motor 17 by a keyway. A movable seat cover 13 is connected to the outer periphery of the lead screw 14 by threads. The movable seat cover 13 is slidably connected to the guide shaft 15. The movable bottom cover 701 slides in the middle of the motor bracket 8. A movable base 10 is slidably connected to the outer periphery of the bottom of the motor bracket 8. The connecting ear of the movable seat cover 13 extends out of the groove at the bottom of the side wall of the motor bracket 8 and is connected to the movable base 10 by screws. A bearing 9 is provided on the outer periphery of the movable seat cover 13. A bearing seat 11 is provided on the outer periphery of the bearing 9. The bearing 9 is pressed and installed inside the bearing seat 11 by anti-slip screws 12. The bearing seat 11 is connected to the rack 702 by screws, and the bearing seat 11 is pressed between the movable base 10 and the movable seat cover 13.

[0024] By adopting the above technical solution, the stepper motor 17 can drive the lead screw 14 to rotate. Then, under the guidance of the threaded transmission and the guide shaft 15, the movable base 10 and the movable bottom cover 701 can move up and down under the guidance of the motor bracket 8. This, in turn, pulls the bearing seat 11 up and down. The movement of the bearing seat 11 can drive the rack 702 to move up and down, thereby adjusting the angle of the fan blade 6. The bearing 9 can provide rotational support for the rotation of the bearing seat 11, ensuring that it can rotate stably with the fan blade 6.

[0025] In the gearbox assembly 7, the angle occupied by the tooth profile of the gear 705 that meshes with the rack 702 is 180 degrees. This ensures that the area of ​​the gear 705 without tooth profile provides a limit for the angle adjustment of the fan blade 6, and ensures that the fan blade 6 can only rotate forward and backward within a certain rotation angle range.

[0026] The working principle of this utility model is as follows: During operation, the stepper motor 17 is controlled to operate. The stepper motor 17 rotates the lead screw 14, which, under the guidance of the threaded transmission and the first guide shaft 15, drives the movable base 10 and the movable bottom cover 701 to move up and down under the guidance of the motor bracket 8. This, in turn, pulls the bearing seat 11 to move up and down. The up-and-down movement of the bearing seat 11 drives the rack 702 to move up and down under the guidance of the second guide shaft 703. Under the meshing transmission of the rack 702 and the gear 705, the fan blade shaft 709 rotates under the guidance of the bearing, bearing bracket 708, and bearing cover 706. This, in turn, drives the fan blade 6 connected to the fan blade shaft 709 to rotate, thus adjusting the rotation angle of the fan blade 6. The up-and-down movement of the rack 702 can be converted into adjusting the rotation angle of the fan blade 6. To achieve better airflow adjustment and performance, the fan blade 6 employs a gearbox assembly 7 consisting of gears 705 and racks 702, along with a screw 14 and nut, forming a helical transmission mechanism. A stepper motor 17 drives its independent automatic rotation to adjust the angle. The two transmission mechanisms are connected by the characteristic that the inner and outer rings of the bearings do not interfere with each other, allowing individual blades to rotate without affecting the high-speed rotation of the entire fan blade 6. This automated adjustment is more convenient. By designing a mechanism to adjust blade rotation within the fan blade 6, a conversion mechanism is used to transform the force of the stepper motor 17 into the force that rotates the fan blade 6. Furthermore, the high-speed rotation of the fan blade 6 does not affect the angle adjustment of the blades. Adjustment via the stepper motor 17 allows the fan blade 6 to change arbitrarily within a certain angle, providing stepless adjustment that is extremely convenient and fast.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fan having a vane for adjusting the angle of a rotating blade, characterized by: The utility model provides fan base (1), the fan base (1) is polygonal structure, and the gear box assembly (7) is fixedly connected on each side of fan base (1), the gear box assembly (7) further includes bottom cover (701), bearing cover (706) being arranged at one side of bottom cover (701), bearing frame (708) being arranged at one side of bearing cover (706), fan blade shaft (709) being rotatably arranged in the middle of bearing frame (708) and bearing cover (706), bearing two (707) being arranged at the periphery of fan blade shaft (709) between bearing cover (706) and bearing frame (708), gear (705) being arranged at the periphery of fan blade shaft (709) between bearing cover (706) and bottom cover (701), rack (702) being movably arranged between bottom cover (701) and bearing cover (706), guide shaft two (703) being fixed in the inside of bottom cover (701) and being slidably connected with the side wall protrusion of rack (702), and spring (704) being clamped and arranged at the periphery of guide shaft two (703) between the side wall protrusion of rack (702) and the bottom of bottom cover (701), the bearing cover (706) and the bottom cover (701) and the bearing frame (708) are connected by screw, the rack (702) is engaged with the gear (705), the fan blade shaft (709) is rotatably connected with the bearing frame (708) and bearing cover (706) through bearing two (707), and the fan blade shaft (709) end fixedly connected with fan blade (6).

2. A fan blade having an adjustable angle of rotation according to claim 1, wherein: The bottom of the fan base (1) is connected with a motor (3) through screw thread, the bottom of the motor (3) is fixedly connected with a support (2), the bottom of the support (2) is connected with a rear net (4) through screw, the outer periphery of the front net (5) above the rear net (4) is connected with a front net (5) through buckling piece, and the output shaft of the motor (3) is connected with the fan base (1) through key transmission.

3. A fan blade having an adjustable angle of rotation according to claim 2, wherein: It also includes a motor support (8) and a stepping motor (17) installed above the electrode support (2) through screw, the output shaft of the stepping motor (17) is connected with a shaft support (16) through screw, one side of the bottom of the shaft support (16) is fixedly connected with a guide shaft one (15), the output shaft of the stepping motor (17) is connected with a lead screw (14) through key groove transmission, the outer periphery of the lead screw (14) is connected with a moving seat cover (13) through screw thread, and the moving seat cover (13) is slidably connected with the guide shaft one (15).

4. A fan blade having an adjustable angle of rotation according to claim 3, wherein: The mobile seat cover (13) slides in the middle of the motor support (8), the bottom of the motor support (8) is slidably connected with a mobile base (10), the connecting lug of the mobile seat cover (13) extends out of the groove in the bottom of the side wall of the motor support (8) and is connected with the mobile base (10) through screws, the outer periphery of the mobile base (10) is provided with a bearing one (9), the outer periphery of the bearing one (9) is provided with a bearing seat (11), the bearing one (9) is clamped and pressed to be installed in the inner part of the bearing seat (11) through the anti-skid wire screw (12), the bearing seat (11) is connected with the rack (702) through screws, and the bearing seat (11) is clamped and pressed between the mobile base (10) and the mobile seat cover (13).

5. A blade having an adjustable angle of rotation according to claim 1, wherein: The angle occupied by the tooth shape in the gear (705) in the gear box assembly (7) matched with the rack (702) is 180 degrees.

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