A head-shaking angle adjusting mechanism and a fan

Abstract

The utility model discloses a kind of head angle adjusting mechanism, including adjusting assembly and firm element, when the swing angle of adjusting mechanism, first gear shaft moves along first direction, so that the meshing position of second transmission gear and third transmission gear is changed accordingly, and then the position of connecting shaft in sliding slot is changed, so as to adjust the angle range of second connecting rod rotating around fixed shaft, realize the adjustment of required angle.The utility model is provided with firm element, firm element has first positioning slot and second positioning slot, first gear shaft can reciprocate in first positioning slot, second positioning slot can accommodate second gear shaft, first positioning slot and second positioning slot play the role of positioning and guiding for first gear shaft and second gear shaft, improve the reciprocating motion accuracy of adjusting assembly, improve the motion stability and reliability of adjusting assembly simultaneously.The utility model further provides a kind of fan, including the head angle adjusting mechanism described above.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to an oscillation angle adjustment mechanism and a fan. Background Technology

[0002] There are two main methods for adjusting the fan angle: a dual-rocker mechanism and a claw-pole motor. The dual-rocker mechanism is based on a four-bar linkage satisfying the Grashof condition, using the adjacent bar of the shortest link (2 or 3 in the diagram) as the frame. See details... Figure 1 The shortest lever (1 in the figure) acts as the driving element, rotating around its axis and causing the opposite lever (lever 3 in the figure) to swing back and forth at a certain angle. Dual-rocker mechanisms typically only offer a limited number of fixed angle adjustments, failing to achieve continuous and smooth angle control. Therefore, this technology provides a method that enables fine-grained angle adjustment, offering a wider range of angle choices; furthermore, dual-rocker mechanisms have a slower response speed, especially when rapid changes in the swing angle are required.

[0003] The working principle of a claw-pole motor is that the claw poles are fixed to the stator, consisting of coils and an iron core, not the rotor. The rotor is a permanent magnet composed of multiple magnetic poles. These poles can be permanent magnets or electromagnetic poles excited by current. When current flows through the stator coils, a rotating magnetic field is generated. This rotating magnetic field acts on the magnetic poles on the rotor, causing the rotor to rotate. Throughout this process, the direction of the voltage and current in the stator coils constantly changes. This causes the direction of the magnetic field generated in the stator coils to constantly change, thus creating a rotating magnetic field that acts on the magnetic poles on the rotor, causing the rotor to rotate. Therefore, both the current and voltage directions are constantly changing in a claw-pole motor, resulting in rotational motion. Because claw-pole motors rely on electrical energy transmission, energy loss occurs, especially during long-term operation and frequent oscillation. This leads to higher energy consumption over long-term use. This does not conform to the principles of energy conservation and emission reduction, especially given rising energy costs and increasingly prominent environmental issues.

[0004] Chinese patent CN114876836A discloses an intelligent stepless adjustable fan, including a left-right swing adjustment device and a right-up-down swing adjustment device. However, the structure is fragile and easily damaged during use, which reduces the product's lifespan and affects the user experience. Utility Model Content

[0005] The purpose of this invention is to provide an oscillation angle adjustment mechanism and a fan to solve the problems existing in the prior art, improve the structural stability of the oscillation angle adjustment mechanism, ensure the working reliability of the fan, and extend the service life of the fan.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a head-shaking angle adjustment mechanism, comprising:

[0008] An adjustment assembly includes a motor shaft, a first gear shaft, a second gear shaft, a fixed shaft, a first connecting rod, and a second connecting rod. The motor shaft has a worm gear section. The first gear shaft has a first transmission gear and a second transmission gear, and the second gear shaft has a third transmission gear. The worm gear section meshes with the first transmission gear, and the second transmission gear meshes with the third transmission gear. One end of the second gear shaft is connected to the first connecting rod, and the other end of the first connecting rod has a connecting post. The connecting post has a cylindrical structure. The second connecting rod has a groove adapted to the connecting post, and the connecting post is slidably disposed within the groove. The end of the second connecting rod away from the groove is rotatably connected to the fixed shaft, which is fixedly disposed. The first gear shaft can reciprocate along a first direction to change the position of the connecting post within the groove, thereby adjusting the oscillation angle.

[0009] A stabilizing element is fixedly disposed and has a first positioning groove adapted to the first gear shaft. The length direction of the first positioning groove is parallel to the first direction. The stabilizing element has a second positioning groove adapted to the second gear shaft. Both the first positioning groove and the second positioning groove are U-shaped grooves with the same opening direction. The first gear shaft can slide into the first positioning groove, and the second gear shaft is located in the second positioning groove.

[0010] Preferably, both the first gear shaft and the second gear shaft are fitted with bearings, and the outer ring of the bearings can abut against the stabilizing element.

[0011] Preferably, the stabilizing element is a frame structure, which includes a first positioning plate, a second positioning plate, and a connecting side plate. The first positioning groove is disposed on the first positioning plate, the second positioning groove is disposed on the second positioning plate, the first positioning plate and the second positioning plate are arranged parallel to each other, and the connecting side plate connects the first positioning plate and the second positioning plate.

[0012] Preferably, the connecting side plate is connected to one end of the first positioning plate and the second positioning plate, and the connecting side plate is perpendicular to the first positioning plate and the second positioning plate. The first positioning groove is located at the end of the first positioning plate away from the connecting side plate, and the second positioning groove is located at the end of the second positioning plate away from the connecting side plate.

[0013] Preferably, the stabilizing element has a fixing hole, which allows the stabilizing element to be fixed to the mounting base.

[0014] Preferably, the stabilizing element can be bolted to the mounting base using the fixing holes; the number of fixing holes is multiple.

[0015] Preferably, the length of the first positioning groove is greater than the maximum displacement distance of the first gear shaft reciprocating along the first direction.

[0016] This utility model also provides a fan, including a housing and fan blades, and the aforementioned oscillation angle adjustment mechanism, wherein the motor shaft is drivenly connected to the fan blades, and the oscillation angle adjustment mechanism is disposed in the inner cavity of the housing.

[0017] Preferably, the stabilizing element is connected to a mounting post, and the housing has a mounting hole adapted to the mounting post, the mounting post extending out of the housing through the mounting hole.

[0018] Preferably, the mounting hole is an elongated hole, and the length direction of the mounting hole is parallel to the first direction.

[0019] This utility model achieves the following technical advantages over the prior art: The yaw angle adjustment mechanism of this utility model includes an adjustment component and a stabilizing element. The adjustment component includes a motor shaft, a first gear shaft, a second gear shaft, a fixed shaft, a first connecting rod, and a second connecting rod. The motor shaft has a worm gear section. The first gear shaft is equipped with a first transmission gear and a second transmission gear, and the second gear shaft is equipped with a third transmission gear. The worm gear section meshes with the first transmission gear, and the second transmission gear meshes with the third transmission gear. The second gear shaft is connected to one end of the first connecting rod, and the other end of the first connecting rod has a connecting post. The connecting post has a cylindrical structure, and the second connecting rod has a connection with the connecting post. The matching slide groove allows the connecting column to be slidably disposed within it. The end of the second connecting rod furthest from the slide groove is rotatably connected to a fixed shaft, which is fixedly disposed. The first gear shaft can reciprocate along a first direction to change the position of the connecting column within the slide groove, thereby adjusting the sway angle. A stabilizing element is fixedly disposed and has a first positioning groove adapted to the first gear shaft, the length direction of which is parallel to the first direction. The stabilizing element also has a second positioning groove adapted to the second gear shaft. Both the first and second positioning grooves are U-shaped grooves with the same opening direction. The first gear shaft can be slidably inserted into the first positioning groove, and the second gear shaft is located within the second positioning groove.

[0020] This utility model discloses a sway angle adjustment mechanism. A first transmission gear meshes with the worm gear section of the motor shaft to form a worm gear mechanism, transmitting power from the motor shaft to the first gear shaft. The first gear shaft drives the second transmission gear to rotate. The second transmission gear meshes with a third transmission gear, thus smoothly transmitting power to the third transmission gear. The second gear shaft is fixedly connected to a first connecting rod. A connecting post is provided at the other end of the first connecting rod, sliding within a groove in the second connecting rod, allowing the second connecting rod to rotate around a fixed shaft. When adjusting the sway angle of the mechanism, the first gear shaft moves in a first direction. When the stabilizing element is subjected to an external force in one direction, the first and second transmission shafts are driven by the stabilizing element, with all three displacements in the same direction and magnitude. Since the second transmission gear and the first transmission shaft are integral, and the third transmission gear and the second transmission shaft are integral, the displacements of the second and third transmission gears are consistent with those of the stabilizing element. This causes the meshing position of the second and third transmission gears to change accordingly, thereby changing the position of the connecting shaft within the groove, thus adjusting the sway angle range of the second connecting rod around the fixed shaft, achieving the desired angle adjustment. It should be emphasized that this utility model includes a stabilizing element along with the adjustment component. The stabilizing element has a first positioning groove and a second positioning groove. The first gear shaft can reciprocate within the first positioning groove, and the second positioning groove can accommodate the second gear shaft. The first and second positioning grooves serve to position and guide the first and second gear shafts, thereby improving the accuracy of the reciprocating motion of the adjustment component and enhancing its motion stability and reliability.

[0021] This utility model also provides a fan, including the above-mentioned oscillation angle adjustment mechanism. By adding a stabilizing element, damage to the components caused by vibration or external force is reduced, and the service life of the fan is extended. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a dual-rocker mechanism for adjusting the fan angle in existing technology.

[0024] Figure 2 This is a schematic diagram of the yaw angle adjustment mechanism disclosed in the embodiment of this utility model.

[0025] Figure 3 This is a structural schematic diagram of other angles of the head-shaking angle adjustment mechanism disclosed in the embodiments of this utility model;

[0026] Figure 4 This is a schematic diagram of the fan structure disclosed in the embodiment of this utility model.

[0027] In the diagram: 1. Stabilizing element; 2. Motor shaft; 3. First gear shaft; 4. Second gear shaft; 5. Fixed shaft; 6. First connecting rod; 7. Second connecting rod; 8. First transmission gear; 9. Second transmission gear; 10. Third transmission gear; 11. Slide groove; 12. First positioning groove; 13. Second positioning groove; 14. First positioning plate; 15. Second positioning plate; 16. Connecting side plate; 17. Fixing hole; 18. Housing; 19. Fan blade; 20. Mounting column; 21. Mounting hole. Detailed Implementation

[0028] 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.

[0029] The purpose of this invention is to provide an oscillation angle adjustment mechanism and a fan to solve the problems existing in the prior art, improve the structural stability of the oscillation angle adjustment mechanism, ensure the working reliability of the fan, and extend the service life of the fan.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] This embodiment provides a head-shaking angle adjustment mechanism; please refer to [reference needed]. Figure 2 and Figure 3The system includes an adjusting assembly and a stabilizing element 1. The adjusting assembly includes a motor shaft 2, a first gear shaft 3, a second gear shaft 4, a fixed shaft 5, a first connecting rod 6, and a second connecting rod 7. The motor shaft 2 has a worm gear section. The first gear shaft 3 is equipped with a first transmission gear 8 and a second transmission gear 9. The second gear shaft 4 is equipped with a third transmission gear 10. The worm gear section meshes with the first transmission gear 8, and the second transmission gear 9 meshes with the third transmission gear 10. One end of the second gear shaft 4 is connected to the first connecting rod 6. The other end of the first connecting rod 6 has a connecting post with a cylindrical structure. The second connecting rod 7 has a groove 11 that fits into the connecting post, and the connecting post is slidably disposed within the groove 11. The end of the second connecting rod 7 away from the slide groove 11 is rotatably connected to the fixed shaft 5, which is fixedly installed. The first gear shaft 3 can slide back and forth along the first direction to change the position of the connecting column in the slide groove 11 and adjust the sway angle. The stabilizing element 1 is fixedly installed and has a first positioning groove 12 that is adapted to the first gear shaft 3. The length direction of the first positioning groove 12 is parallel to the first direction. The stabilizing element 1 has a second positioning groove 13 that is adapted to the second gear shaft 4. Both the first positioning groove 12 and the second positioning groove 13 are U-shaped grooves with the same opening direction. The first gear shaft 3 can slide into the first positioning groove 12, and the second gear shaft 4 is located in the second positioning groove 13.

[0033] The oscillation angle adjustment mechanism of this utility model comprises a worm gear mechanism formed by the meshing of a first transmission gear 8 with the worm section of a motor shaft 2. This worm gear mechanism transmits the power output from the motor shaft 2 to the first gear shaft 3, which in turn drives the second transmission gear 9 to rotate. The second transmission gear 9 meshes with a third transmission gear 10, thus smoothly transmitting power to the third transmission gear 10. The second gear shaft 4 is fixedly connected to a first connecting rod 6. A connecting post is provided at the other end of the first connecting rod 6, which slides within the groove 11 of the second connecting rod 7, allowing the second connecting rod 7 to rotate around a fixed shaft 5. When adjusting the oscillation angle of the mechanism, the first gear shaft 3 moves along a first direction. When the stabilizing element 1 is subjected to an external force in one direction, the first and second transmission shafts are driven by the stabilizing element, and the displacement directions and magnitudes of all three are consistent. Since the second transmission gear and the first transmission shaft are integral, and the third transmission gear and the second transmission shaft are integral, the displacement of the second and third transmission gears is consistent with that of the stabilizing element. This causes the meshing position of the second transmission gear 9 and the third transmission gear 10 to change accordingly, thereby changing the position of the connecting shaft within the slide groove 11. This adjusts the angle range of the second connecting rod 7 rotating around the fixed shaft 5, achieving the required angle adjustment. It should be emphasized that this utility model, while setting the adjustment component, also sets a stabilizing element 1. The stabilizing element 1 has a first positioning groove 12 and a second positioning groove 13. The first gear shaft 3 can reciprocate within the first positioning groove 12, and the second positioning groove 13 can accommodate the second gear shaft 4. The first positioning groove 12 and the second positioning groove 13 serve to position and guide the first gear shaft 3 and the second gear shaft 4, improving the accuracy of the reciprocating motion of the adjustment component, and also improving the motion stability and reliability of the adjustment component.

[0034] The first gear shaft 3 and the second gear shaft 4 are both fitted with bearings to ensure the smooth rotation of the first gear shaft 3 and the second gear shaft 4. The outer ring of the bearing can abut against the stabilizing element 1 so that the stabilizing element 1 can provide stable support for the adjustment assembly.

[0035] Specifically, the stabilizing element 1 is a frame structure, comprising a first positioning plate 14, a second positioning plate 15, and a connecting side plate 16. A first positioning groove 12 is disposed on the first positioning plate 14, and a second positioning groove 13 is disposed on the second positioning plate 15. The first positioning plate 14 and the second positioning plate 15 are arranged parallel to each other. The connecting side plate 16 connects the first positioning plate 14 and the second positioning plate 15. The stabilizing element 1 utilizes the connecting side plate 16 to connect the first positioning plate 14 and the second positioning plate 15, resulting in a stable and high-strength structure. The stabilizing element 1 of this invention adopts an integrated frame structure, which provides stable support for the adjustment assembly while reducing the space occupied. It also helps to reduce the space occupied by the oscillation angle adjustment mechanism and improves the adaptability of the oscillation angle adjustment mechanism.

[0036] In this specific embodiment, the connecting side plate 16 connects one end of the first positioning plate 14 and the second positioning plate 15, and the connecting side plate 16 is perpendicular to the first positioning plate 14 and the second positioning plate 15. The first positioning groove 12 is located at the end of the first positioning plate 14 away from the connecting side plate 16, and the second positioning groove 13 is located at the end of the second positioning plate 15 away from the connecting side plate 16. By connecting the end of the connecting side plate 16 to the first positioning plate 14 and the second positioning plate 15, the space occupied by the stabilizing element 1 is saved to the greatest extent while ensuring structural stability, thus avoiding affecting the normal operation of the adjustment assembly.

[0037] It should also be noted that the stabilizing element 1 has a fixing hole 17, which allows the stabilizing element 1 to be fixed to the mounting base, thereby securing the stabilizing element 1 and ensuring its structural stability. It should be explained here that the mounting base can be a fixed component in the adjustment assembly, or another fixed component in the system containing the yaw angle adjustment mechanism. Selecting a suitable mounting base is a common practice among those skilled in the art, and will not be elaborated further here.

[0038] In practical applications, the stabilizing element 1 can be connected to the mounting base bolts via the fixing holes 17. The bolt connection is secure and easy to install and remove. In other specific embodiments of this utility model, there are multiple fixing holes 17, providing multi-point fixation, which further improves the structural stability of the stabilizing element 1, enhances its supporting role for the adjustment components, and ensures the overall structural stability of the yaw angle adjustment mechanism.

[0039] In addition, the length of the first positioning groove 12 is greater than the maximum displacement distance of the first gear shaft 3 reciprocating along the first direction, so as to avoid affecting the reciprocating operation of the first gear shaft 3. At the same time, the first positioning groove 12 adopts a U-shaped groove structure, which limits the extreme movement position of the first gear shaft 3 and improves the operating safety factor of the adjustment component.

[0040] Example 2

[0041] This embodiment also provides a fan, see details. Figure 4 It includes a housing 18 and a fan blade 19, and also includes the oscillation angle adjustment mechanism of Embodiment 1. The motor shaft 2 is connected to the fan blade 19 in a transmission manner, and the oscillation angle adjustment mechanism is disposed in the inner cavity of the housing 18.

[0042] This invention enhances the structural stability of the adjustment assembly by adding a stabilizing element 1, ensuring the smooth movement of the oscillation angle adjustment mechanism, reducing damage to components caused by vibration or external force, and extending the service life of the fan.

[0043] In this specific embodiment, the stabilizing element 1 is connected to a mounting post 20, and the housing 18 has a mounting hole 21 adapted to the mounting post 20. The mounting post 20 extends out of the housing 18 through the mounting hole 21 to fix the position of the stabilizing element 1. In practical applications, the angle adjustment mechanism in the prior art can be slightly modified, and the stabilizing element 1 can be added to the angle adjustment mechanism in the prior art using the mounting post 20 to enhance its stability.

[0044] In other specific embodiments achievable by this utility model, the mounting hole 21 is an elongated hole, and the length direction of the mounting hole 21 is parallel to the first direction. The elongated hole allows for appropriate adjustment of the position of the stabilizing element 1 according to specific working conditions. After adjusting to the appropriate position, the stabilizing element 1 is then fixed, thereby ensuring the overall stability of the fan while improving the flexibility and adaptability of the stabilizing element 1.

[0045] Compared to the prior art disclosed in CN114876836A, the fan of this utility model improves structural stability and reduces damage caused by vibration or external force by adding a stabilizing element 1. Through a more rational design, the overall service life of the product is extended.

[0046] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A yaw angle adjustment mechanism, characterized in that, include: An adjustment assembly includes a motor shaft, a first gear shaft, a second gear shaft, a fixed shaft, a first connecting rod, and a second connecting rod. The motor shaft has a worm gear section. The first gear shaft has a first transmission gear and a second transmission gear, and the second gear shaft has a third transmission gear. The worm gear section meshes with the first transmission gear, and the second transmission gear meshes with the third transmission gear. One end of the second gear shaft is connected to the first connecting rod, and the other end of the first connecting rod has a connecting post. The connecting post has a cylindrical structure. The second connecting rod has a groove adapted to the connecting post, and the connecting post is slidably disposed within the groove. The end of the second connecting rod away from the groove is rotatably connected to the fixed shaft, which is fixedly disposed. The first gear shaft can reciprocate along a first direction to change the position of the connecting post within the groove, thereby adjusting the oscillation angle. A stabilizing element is fixedly disposed and has a first positioning groove adapted to the first gear shaft. The length direction of the first positioning groove is parallel to the first direction. The stabilizing element has a second positioning groove adapted to the second gear shaft. Both the first positioning groove and the second positioning groove are U-shaped grooves with the same opening direction. The first gear shaft can slide into the first positioning groove, and the second gear shaft is located in the second positioning groove.

2. The yaw angle adjustment mechanism according to claim 1, characterized in that: Both the first gear shaft and the second gear shaft are fitted with bearings, and the outer ring of the bearings can abut against the stabilizing element.

3. The yaw angle adjustment mechanism according to claim 1, characterized in that: The stabilizing element is a frame structure, which includes a first positioning plate, a second positioning plate, and a connecting side plate. The first positioning groove is disposed on the first positioning plate, and the second positioning groove is disposed on the second positioning plate. The first positioning plate and the second positioning plate are arranged parallel to each other. The connecting side plate connects the first positioning plate and the second positioning plate.

4. The yaw angle adjustment mechanism according to claim 3, characterized in that: The connecting side plate connects to one end of the first positioning plate and the second positioning plate, and the connecting side plate is perpendicular to the first positioning plate and the second positioning plate. The first positioning groove is located at the end of the first positioning plate away from the connecting side plate, and the second positioning groove is located at the end of the second positioning plate away from the connecting side plate.

5. The yaw angle adjustment mechanism according to claim 1, characterized in that: The stabilizing element has a fixing hole, which allows it to be fixed to the mounting base.

6. The yaw angle adjustment mechanism according to claim 5, characterized in that: The stabilizing element can be bolted to the mounting base using the fixing holes; there are multiple fixing holes.

7. The oscillation angle adjustment mechanism according to any one of claims 1-6, characterized in that: The length of the first positioning groove is greater than the maximum displacement distance of the first gear shaft reciprocating along the first direction.

8. A fan, comprising a housing and fan blades, characterized in that: It also includes the oscillation angle adjustment mechanism according to any one of claims 1-7, wherein the motor shaft is connected to the fan blade drive, and the oscillation angle adjustment mechanism is disposed in the inner cavity of the housing.

9. The fan according to claim 8, characterized in that: The stabilizing element is connected to a mounting post, and the housing has a mounting hole adapted to the mounting post, through which the mounting post extends out of the housing.

10. The fan according to claim 9, characterized in that: The mounting hole is an elongated hole, and the length direction of the mounting hole is parallel to the first direction.

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