Pitch angle adjustment mechanism and fan

Abstract

The application relates to a pitch angle adjusting mechanism and a fan. The pitch angle adjusting mechanism comprises a rotating assembly, a rotating shaft support and a rotating shaft. The rotating shaft is rotatably installed on the rotating shaft support. The rotating assembly further has a shaft hole penetrating the rotating shaft support and the rotating shaft. The connecting assembly comprises a first connecting piece and a second connecting piece. One end of the first connecting piece penetrates the shaft hole from the first side of the rotating assembly in the axial direction, penetrates out of the shaft hole from the second side of the rotating assembly and is connected with the rotating assembly. One end of the second connecting piece penetrates the inside of the first connecting piece from the second side of the rotating assembly in the axial direction, penetrates out from the first side of the rotating assembly and is connected with the first connecting piece. When the pitch angle needs to be adjusted, the rotating shaft can be rotated. Due to the reliable connection of the connecting assembly between the rotating shaft and the rotating shaft support, the rotating shaft can be reliably fixed on the rotating shaft support, so that the pitch angle adjusting is more reliable. The pitch angle adjusting mechanism of the application has few parts and high assembly efficiency.

Description

Technical Field

[0001] This application relates to the field of fan technology, and in particular to pitch angle adjustment mechanisms and fans. Background Technology

[0002] With the improvement of people's living standards and the diversification of lifestyles, more and more people are participating in outdoor activities such as camping and picnics in recent years, leading to a surge in demand for outdoor fans. Outdoor fans are typically capable of oscillating left and right and tilting up and down to provide airflow from multiple angles.

[0003] In related technologies, a spring-loaded ball-bearing pitch angle adjustment mechanism is often used to make the fan pitch. However, this method involves a large number of parts and has low assembly efficiency. Summary of the Invention

[0004] Therefore, it is necessary to address the problems of existing pitch angle adjustment mechanisms, which involve a large number of parts and have low assembly efficiency, by providing a pitch angle adjustment mechanism and fan with fewer parts and higher assembly efficiency.

[0005] A pitch angle adjustment mechanism, comprising:

[0006] A rotating assembly includes a shaft bracket and a shaft, the shaft being rotatably mounted on the shaft bracket. The rotating assembly also has a shaft hole through which the shaft bracket and the shaft pass.

[0007] The connecting assembly includes a first connector and a second connector. One end of the first connector passes through a shaft hole from a first side of the rotating assembly along the axial direction and exits through the shaft hole from a second side of the rotating assembly to connect with the rotating assembly. One end of the second connector passes through the interior of the first connector from the second side of the rotating assembly along the axial direction and exits from the first side of the rotating assembly to connect with the first connector. The first side and the second side are arranged opposite to each other along the axial direction.

[0008] In one embodiment, the first connector engages with the rotating assembly; and / or

[0009] The second connector engages with the first connector.

[0010] In one embodiment, the first connector includes a plurality of first elastic buckles, all of which are arranged in a ring at intervals, and each first elastic buckle engages with the rotating component; a first through hole is formed between all the first elastic buckles for the second connector to pass through.

[0011] In one embodiment, the shaft hole penetrates the first outer side wall of the rotating assembly, the first outer side wall is located on the second side of the rotating assembly, and all the first elastic buckles abut against the first outer side wall axially.

[0012] In one embodiment, the entire first elastic fastener is attached to one end of the first connector, and the opposite end of the first connector abuts against the first side of the rotating assembly along the axial direction.

[0013] In one embodiment, the second connector includes a plurality of second elastic buckles, all of which are arranged in a ring at intervals, and each second elastic buckle engages with the first connector; a second through hole is formed between all the second elastic buckles.

[0014] In one embodiment, the first connector has a first through hole that penetrates the second outer side wall of the first connector. The second outer side wall is located on the first side of the rotating assembly, and all the second elastic buckles abut against the second outer side wall axially.

[0015] In one embodiment, the entire second elastic fastener is attached to one end of the second connector, and the opposite end of the second connector abuts against the second side of the rotating assembly along the axial direction.

[0016] In one embodiment, the connecting assembly further includes a third connector, which includes a third connecting post that passes through the second through hole to limit the elastic deformation of the second elastic buckle.

[0017] In one embodiment, the third connector further includes a third limiting cover plate, which abuts against the first side of the rotating assembly along the axial direction. One end of the third connecting post is connected to the third limiting cover plate, and the other end of the third connecting post passes through the second through hole.

[0018] In one embodiment, the rotating assembly has a first limiting groove on the first side and a second limiting groove on the second side. The shaft hole passes through the bottom wall of the first limiting groove and the bottom wall of the second limiting groove. The first connector and the third connector are radially limited within the first limiting groove, and the second connector is radially limited within the second limiting groove.

[0019] In one embodiment, the shaft is frictionally engaged with the shaft support along the axial direction.

[0020] In one embodiment, the rotating assembly further includes a friction assembly, with a shaft hole penetrating the friction assembly, and the friction assembly is axially disposed between the rotating shaft support and the rotating shaft.

[0021] In one embodiment, the friction assembly includes a first friction plate and a second friction plate, with a shaft hole passing through the first friction plate and the second friction plate. The first friction plate is axially disposed between one side of the rotating shaft and the rotating shaft support, and the second friction plate is axially disposed between the opposite side of the rotating shaft and the rotating shaft support.

[0022] In one embodiment, the pitch angle adjustment mechanism further includes a support base and multiple support rods. The rotating shaft bracket is mounted on the support base, one end of each support rod is rotatably connected to the support base, and all support rods are spaced apart from each other around the center of the support base.

[0023] In another aspect of this application, a fan is also provided, including a fan body and a pitch angle adjustment mechanism as described in any of the above embodiments, wherein the fan body is connected to a rotating shaft.

[0024] In one embodiment, the fan is an outdoor fan.

[0025] The aforementioned pitch angle adjustment mechanism and fan, when pitch angle adjustment is required, can rotate the shaft relative to the shaft bracket. Due to the reliable connection between the shaft and the shaft bracket via the connecting assembly, the shaft remains reliably fixed to the shaft bracket even during pitch adjustment pressure during rotation, resulting in more reliable pitch angle adjustment. Therefore, reliable pitch angle adjustment can be achieved through the connection between the rotating assembly and the first and second connecting parts in the connecting assembly. Consequently, the pitch angle adjustment mechanism of this application uses fewer parts, and the assembly process between components is simple, resulting in high assembly efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the pitch angle adjustment mechanism in one embodiment of this application.

[0027] Figure 2 for Figure 1 An exploded structural diagram of part of the pitch angle adjustment mechanism.

[0028] Figure 3 for Figure 2 The diagram shows a cross-sectional view of a portion of the pitch angle adjustment mechanism.

[0029] Figure 4 for Figure 2 A schematic diagram of the rotating shaft bracket in part of the pitch angle adjustment mechanism.

[0030] Figure 5 for Figure 2 A schematic diagram of the rotating shaft in part of the pitch angle adjustment mechanism.

[0031] Figure 6 for Figure 2 A cross-sectional view of the rotating shaft in the pitch angle adjustment mechanism when it is in the first angular position.

[0032] Figure 7 for Figure 2A cross-sectional view of the rotating shaft in the pitch angle adjustment mechanism when it is in the second angle position.

[0033] Figure 8 for Figure 2 A schematic diagram of the first connecting member in part of the pitch angle adjustment mechanism.

[0034] Figure 9 for Figure 2 A schematic diagram of the second connecting member in part of the pitch angle adjustment mechanism.

[0035] Figure 10 for Figure 2 A schematic diagram of the third connecting member in part of the pitch angle adjustment mechanism.

[0036] Explanation of reference numerals in the attached figures:

[0037] Pitch angle adjustment mechanism 100;

[0038] Rotating component 10;

[0039] Rotary shaft bracket 11, sub-rotary shaft bracket 111, first rotation limiting part 112, second rotation limiting part 113, rotating shaft 12, rotating part 121, central corner part 122, first annular receiving cavity 123, operating protrusion 124, shaft hole 13, friction assembly 14, first friction plate 141, second friction plate 142, first limiting groove 15, first side 101, second side 102;

[0040] Connection component 20;

[0041] First connector 21, first elastic buckle 211, first through hole 212, first limiting cover plate 213, first connecting post 214, second connector 22, second elastic buckle 221, second through hole 222, second limiting cover plate 223, second connecting post 224, third connector 23, third connecting post 231, third limiting cover plate 232;

[0042] Support base 30;

[0043] Support rod 40. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the pitch angle adjustment mechanism in one embodiment of this application. Figure 2 for Figure 1 An exploded structural diagram of a portion of the pitch angle adjustment mechanism. An embodiment of this application provides a pitch angle adjustment mechanism 100, including a rotating assembly 10 and a connecting assembly 20.

[0051] The pitch angle adjustment mechanism 100 of this application embodiment can be applied to a fan to adjust the pitch angle of the fan body. In other embodiments, the pitch angle adjustment mechanism 100 can also be applied to other devices that are suitable for the pitch angle adjustment mechanism 100, and there are no specific limitations.

[0052] The rotating assembly 10 includes a shaft bracket 11 and a shaft 12, the shaft 12 being rotatably mounted on the shaft bracket 11, and the rotating assembly 10 also has a shaft hole 13 through which the shaft bracket 11 and the shaft 12 pass.

[0053] Combination Figure 3 The connecting assembly 20 includes a first connecting member 21 and a second connecting member 22. One end of the first connecting member 21 passes through a shaft hole 13 from a first side 101 of the rotating assembly 10 along the axial direction and exits from the shaft hole 13 from a second side 102 of the rotating assembly 10 to connect with the rotating assembly 10. One end of the second connecting member 22 passes through the interior of the first connecting member 21 from the second side 102 of the rotating assembly 10 along the axial direction and exits from the first side 101 of the rotating assembly 10 to connect with the first connecting member 21. The first side 101 and the second side 102 are arranged opposite each other along the axial direction.

[0054] It should be noted that although the connecting component 20 passes through the shaft hole 13 of the rotating component 10, it does not affect the rotation of the rotating shaft 12 relative to the rotating shaft support 11.

[0055] In the actual assembly process, the rotating shaft 12 in the rotating assembly 10 can be assembled with the rotating shaft bracket 11 first. Then, one end of the first connecting member 21 in the connecting assembly 20 passes through the shaft hole 13 from the first side 101 of the rotating assembly 10 along the axial direction and exits from the shaft hole 13 from the second side 102 of the rotating assembly 10 to connect with the rotating assembly 10. In this way, the first connecting member 21 can form a preliminary connection between the various components of the rotating assembly 10. Then, one end of the second connecting member 22 passes through the interior of the first connecting member 21 from the second side 102 of the rotating assembly 10 along the axial direction and exits from the first side 101 of the rotating assembly 10 to connect with the first connecting member 21. Therefore, the connection reliability of the first connecting member 21 can be enhanced by the connection of the second connecting member 22, thereby enabling a reliable connection between the various components of the rotating assembly 10.

[0056] Therefore, when the pitch angle needs to be adjusted, the rotating shaft 12 can be rotated relative to the rotating shaft bracket 11. Since the rotating shaft 12 and the rotating shaft bracket 11 are reliably connected by the connecting component 20, the rotating shaft 12 can still be reliably fixed on the rotating shaft bracket 11 during the pitch adjustment pressure when it rotates, making the pitch angle adjustment more reliable.

[0057] In summary, the pitch angle adjustment mechanism 100 of this application embodiment can reliably adjust the pitch angle through the connection between the rotating assembly 10 and the first connecting member 21 and the second connecting member 22 in the connecting assembly 20. Therefore, it uses fewer parts and the assembly process between the components is simple, resulting in high assembly efficiency.

[0058] like Figure 2 and Figure 4 As shown, in a specific embodiment of this application, the pivot bracket 11 includes at least two sub-pivot brackets 111 arranged opposite each other along the axial direction, the shaft hole 13 passes through all the sub-pivot brackets 111, at least a portion of the pivot 12 protrudes and is supported between at least two adjacent sub-pivot brackets 111, and is able to rotate relative to the sub-pivot brackets 111.

[0059] By setting at least two sub-shaft supports 111 that are arranged opposite each other along the axial direction, the shaft 12 can be reliably supported, so that the shaft 12 is subjected to force smoothly and rotates steadily.

[0060] Optionally, the pivot bracket 11 includes two sub-pivot brackets 111 arranged axially opposite each other, and a portion of the pivot 12 protrudes and is supported between the two adjacent sub-pivot brackets 111.

[0061] In other embodiments, the rotating shaft 12 may be provided with at least two sub-rotating shafts arranged opposite each other along the axial direction, the shaft hole 13 passing through all the sub-rotating shafts, and at least a portion of the rotating shaft support 11 protruding from at least two adjacent sub-rotating shaft supports and capable of supporting the sub-rotating shafts.

[0062] like Figure 2 and Figure 5 As shown in the embodiment of this application, the rotating shaft 12 includes a rotating portion 121 and a central corner portion 122. The shaft hole 13 passes through the rotating portion 121, and the central corner portion 122 is located on the outer periphery of the rotating portion 121. The rotation angle range of the rotating shaft 12 relative to the rotating shaft support 11 can be determined by the central corner portion 122. For example, when the central angle of the central corner portion 122 is 90 degrees, the rotation angle of the rotating shaft 12 relative to the rotating shaft support 11 is 90 degrees; when the central angle of the central corner portion 122 is 180 degrees, the rotation angle of the rotating shaft 12 relative to the rotating shaft support 11 is 180 degrees.

[0063] like Figure 6 and Figure 7 As shown, the rotating shaft 12 is further rotatable relative to the rotating shaft support 11 between a first angular position and a second angular position. The rotating shaft support 11 has a first rotation limiting part 112 and a second rotation limiting part 113. The first rotation limiting part 112 and the second rotation limiting part 113 are spaced apart from each other along the rotation direction of the rotating shaft 12. When the rotating shaft 12 rotates to the first angular position, one side of the central corner part 122 abuts against the first rotation limiting part 112 to limit the rotation. When the rotating shaft 12 rotates to the second angular position, the opposite side of the central corner part 122 abuts against the second rotation limiting part 113 to limit the rotation. Specifically, the included angle between the first rotation limiting part 112 and the second rotation limiting part 113 is 180 degrees.

[0064] By providing a first rotation limit part 112 and a second rotation limit part 113 on the rotating shaft bracket 11, the rotating shaft 12 is rotated at a first angular position and a second angular position respectively, which can make the rotating shaft 12 rotate reliably relative to the rotating shaft bracket 11 and reduce the damage caused when the rotating shaft 12 exceeds the limit rotation position.

[0065] Please refer to it again. Figure 5 In some embodiments, to facilitate the rotation operation of the rotating shaft 12, the rotating shaft 12 further includes an operating protrusion 124, which protrudes from the outer periphery of the central corner portion 122.

[0066] Specifically, the operating protrusion 124 can be a handle, a lever, etc., and is not limited to any particular type.

[0067] In the embodiments of this application, the rotating shaft 12 is in frictional engagement with the rotating shaft bracket 11 along the axial direction.

[0068] Frictional fit means that there is a certain rotational friction between the rotating shaft 12 and the rotating shaft support 11. This rotational friction will hinder the rotation of the rotating shaft 12 relative to the rotating shaft support 11. When the rotating shaft 12 rotates relative to the rotating shaft support 11 under the action of an external force, it needs to overcome this rotational friction. When the external force is removed, the rotating shaft 12 can remain in its current position under the action of this rotational friction and will not rotate relative to the rotating shaft support 11.

[0069] Please refer to it again. Figure 2 and Figure 3 Optionally, the rotating assembly 10 also includes a friction assembly 14, with the shaft hole 13 passing through the friction assembly 14, and the friction assembly 14 being axially disposed between the rotating shaft support 11 and the rotating shaft 12.

[0070] The method of setting the friction assembly 14 between the shaft bracket 11 and the shaft 12 is simple and the assembly is also simple.

[0071] Specifically, the material of the friction component 14 can be some components that can undergo elastic deformation, such as rubber parts.

[0072] In some embodiments, the rotating shaft 12 is frictionally engaged with the rotating shaft support 11 on both opposite sides along the axial direction. This ensures that the forces on both sides of the rotating shaft 12 are balanced, resulting in a smoother rotation process.

[0073] Specifically, the friction assembly 14 includes a first friction plate 141 and a second friction plate 142. The shaft hole 13 passes through the first friction plate 141 and the second friction plate 142. The first friction plate 141 is axially disposed between one side of the rotating shaft 12 and the rotating shaft support 11, and the second friction plate 142 is axially disposed between the opposite side of the rotating shaft 12 and the rotating shaft support 11.

[0074] The method of setting friction plates between the opposite sides of the rotating shaft 12 and the rotating shaft support 11 is simple. Since the first friction plate 141 and the second friction plate 142 are both penetrated by the shaft hole 13, a unified positioning reference can be formed between them and the rotating shaft 12 and the rotating shaft support 11, which facilitates the subsequent connection of the connecting assembly 20 to the rotating assembly 10.

[0075] In order to ensure that the friction assembly 14 is reliably positioned between the rotating shaft 12 and the rotating shaft support 11, and is not affected by the rotation of the rotating shaft 12 relative to the rotating shaft support 11, an annular receiving cavity is provided on the side of the rotating shaft 12 facing the rotating shaft support 11, so as to facilitate the receiving and positioning of the friction assembly 14.

[0076] Specifically, the rotating shaft 12 has a first annular cavity 123 on one side along the axial direction facing the rotating shaft support 11. The first annular cavity 123 is used to accommodate the first friction plate 141. The rotating shaft 12 has a second annular cavity on the other side along the axial direction facing the rotating shaft support 11. The second annular cavity accommodates the second friction plate 142.

[0077] Furthermore, the inner contour shape of the first annular receiving cavity 123 is adapted to the outer contour shape of the first friction plate 141, and the inner contour shape of the second annular receiving cavity is adapted to the outer contour shape of the second friction plate 142. In this way, the friction plate can be limited in the circumferential direction, thereby enabling the friction plate to be reliably installed between the rotating shaft 12 and the rotating shaft support 11.

[0078] In the embodiments of this application, a first axial gap is formed between one side of the rotating shaft 12 along the axial direction and the rotating shaft support 11, and a second axial gap is formed between the other side of the rotating shaft 12 along the axial direction and the rotating shaft support 11. The first friction plate 141 is interference-fitted with the first axial gap, and the second friction plate 142 is interference-fitted with the second axial gap.

[0079] Thus, through an interference fit, both the first friction plate 141 and the second friction plate 142 are pressed between the rotating shaft 12 and the rotating shaft support 11. When the rotating shaft 12 rotates relative to the rotating shaft support 11, it can reliably provide rotational friction, allowing the rotating shaft 12 to adjust its pitch angle at will.

[0080] In the embodiments of this application, the first connector 21 passes through the shaft hole 13 and is connected to the rotating shaft bracket 11, the rotating shaft 12 and the friction assembly 14 of the rotating assembly 10.

[0081] In this way, reliable connections can be made between the components of the rotating assembly 10, and the assembly process between the components of the rotating assembly 10 is simplified.

[0082] Please see Figure 3 and Figure 8 In some embodiments, the first connector 21 is engaged with the rotating assembly 10.

[0083] "Snap-fit" refers to the snap-fit ​​connection between the first connector 21 and the rotating assembly 10.

[0084] By setting the first connector 21 to snap into the rotating component 10, the connection between the first connector 21 and the rotating component 10 is simplified and the assembly operation is more convenient.

[0085] Specifically, the first connector 21 includes a plurality of first elastic buckles 211, all of which are arranged in a ring at intervals. Each first elastic buckle 211 is engaged with the rotating component 10 to achieve interlocking. A first through hole 212 is formed between all the first elastic buckles 211 for the second connector 22 to pass through.

[0086] In practical applications, one end of the first connector 21 is axially inserted through the first side 101 of the rotating assembly 10 into the shaft hole 13. Multiple first elastic buckles 211 are compressed inward by the inner wall of the shaft hole 13. After passing through the sub-shaft support 111, the first friction plate 141, the shaft 12, the second friction plate 14, and another sub-shaft support 111 of the rotating assembly 10, the multiple first elastic buckles 211 exit the shaft hole 13 from the second side 102 of the rotating assembly 10 and engage with the sub-shaft support 111 under the action of elastic restoring force. Furthermore, since the second connector 22 passes through the first through hole 212, the limiting effect of the second connector 22 prevents all the first elastic buckles 211 from easily undergoing elastic deformation towards the first through hole 212.

[0087] Therefore, through the elastic force of the first elastic buckle 211, the first connector 21 can be quickly connected to the rotating assembly 10, and the connection is reliable.

[0088] Specifically, the shaft hole 13 penetrates the first outer side wall of the rotating assembly 10. The first outer side wall is located on the second side 102 of the rotating assembly 10. When the sub-rotating shaft bracket 111 is located on the outermost side of the rotating assembly 10, the first outer side wall can be the outer side wall of the sub-rotating shaft bracket 111 located on the second side 102 of the rotating assembly 10. All the first elastic buckles 211 abut against the first outer side wall along the axial direction.

[0089] Thus, after the first elastic buckle 211 passes through the shaft hole 13 from the second side 102 of the rotating assembly 10, it can be axially engaged with the first outer side wall under the action of elastic restoring force, which simplifies the engagement process and ensures reliable engagement.

[0090] It should be noted that the first elastic buckle 211 extends outward from the shaft hole 13 and abuts against the first outer side wall surrounding it along the axial direction. Therefore, the first elastic buckle 211 is in the form of an inverted buckle that abuts against the first outer side wall. That is, the buckle part of the first elastic buckle 211 extends in the direction away from the first through hole 212 and abuts against the first outer side wall.

[0091] In the embodiments of this application, all the first elastic buckles 211 are disposed at one end of the first connector 21, and the opposite end of the first connector 21 abuts against the first side 101 of the rotating assembly 10 along the axial direction. In this way, the components of the rotating assembly 10 can be clamped between the opposite ends of the first connector 21, thereby achieving a preliminary connection.

[0092] Specifically, the first connector 21 has a first limiting cover plate 213 at the end facing away from the first elastic buckle 211, and the first limiting cover plate 213 abuts against the first side 101 of the rotating assembly 10 axially. Specifically, the first limiting cover plate 213 can abut against the outer wall of the sub-rotating shaft bracket 111 of the rotating assembly 10 located on the first side 101. The large contact area between the first limiting cover plate 213 and the first side 101 of the rotating assembly 10 makes the rotating assembly 10 bear force evenly and improves the stability of the connection.

[0093] In some embodiments, the first connector 21 further includes a first connecting post 214, which is connected between all the first elastic buckles 211 and the first limiting cover plate 213.

[0094] By setting a first connecting post 214 to connect all the first elastic buckles 211 and the first limiting cover plate 213, the structural strength of the first elastic buckle 211 can be improved, and the connection strength between the first elastic buckle 211 and the first limiting cover plate 213 can be increased, so that the first elastic buckle 211 is not easily damaged and detached from the first limiting cover plate 213.

[0095] Please see Figure 3 and Figure 9 In the embodiments of this application, the second connector 22 includes a plurality of second elastic buckles 221, all of which are arranged in a ring at intervals. Each second elastic buckle 221 is engaged with the first connector 21, and a second through hole 222 is formed between all the second elastic buckles 221.

[0096] In practical applications, one end of the second connector 22 is inserted axially from the second side 102 of the rotating assembly 10 into the first through hole 212 of the first connector 21. The multiple first elastic buckles 211 will be squeezed inward by the inner wall of the first through hole 212 and after passing through the first through hole 212 from the first side 101 of the rotating assembly 10, they will be engaged with the first connector 22 under the action of elastic restoring force.

[0097] Therefore, through the elastic force of the second elastic buckle 221, the second connector 22 can be quickly connected to the first connector 21.

[0098] Specifically, the first through hole 212 of the first connector 21 penetrates the first outer side wall of the first connector 21, the first outer side wall is located on the first side 101 of the rotating assembly 10, and all the second elastic buckles 221 abut against the first outer side wall along the axial direction.

[0099] Thus, after the second elastic buckle 221 passes through the first through hole 212 of the first connector 21, it can be axially engaged with the first outer side wall of the first connector 21 under the action of elastic restoring force, which simplifies the engagement process and ensures reliable engagement.

[0100] It should be noted that the second elastic buckle 221 extends outward from the first through hole 212 and abuts against the first outer side wall surrounding it along the axial direction. Therefore, the second elastic buckle 221 is in the form of an inverted buckle that abuts against the first outer side wall. That is, the buckle part of the second elastic buckle 221 extends in the direction away from the second through hole 222 and abuts against the first outer side wall.

[0101] In the embodiments of this application, all the second elastic buckles 221 are disposed at one end of the second connector 22, and the other end of the second connector 22 abuts against the second side 102 of the rotating assembly 10 along the axial direction. In this way, each component of the rotating assembly 10 and the first connector 21 can be clamped between the opposite ends of the second connector 22, thereby achieving a further fixed connection.

[0102] Specifically, the second connector 22 has a second limiting cover 223 at one end facing away from the second elastic buckle 221. The second limiting cover 223 abuts against the second side 102 of the rotating assembly 10 axially. Specifically, the second limiting cover 223 can abut against the outer wall of the sub-rotating shaft bracket 111 of the rotating assembly 10 located on the second side 102. The large contact area between the second limiting cover 223 and the second side 102 of the rotating assembly 10 makes the rotating assembly 10 bear force evenly and improves the stability of the connection.

[0103] In some embodiments, the second connector 22 further includes a second connecting post 224, which is connected between all the second elastic buckles 221 and the second limiting cover plate 223.

[0104] By setting a second connecting post 224 to connect all the second elastic buckles 221 and the second limiting cover plate 223, the structural strength of the second elastic buckle 221 can be improved, and the connection strength between the second elastic buckle 221 and the second limiting cover plate 223 can be increased, so that the second elastic buckle 221 is not easily damaged and detached from the second limiting cover plate 223.

[0105] In the embodiments of this application, the first connecting post 214 abuts against the second elastic buckle 221 radially, and the second connecting post 224 abuts against the first elastic buckle 211 radially.

[0106] Thus, the first connecting post 214 achieves radial limitation on the outer side of the second elastic buckle 221, preventing the second elastic buckle 221 from expanding outward elastically under the limitation of the first connecting post 214. Furthermore, the second connecting post 224 achieves radial limitation on the inner side of the first elastic buckle 211, preventing the first elastic buckle 211 from shrinking inward elastically under the limitation of the second connecting post 224. This improves the overall connection reliability between the first connecting member 21 and the second connecting member 22.

[0107] Please see Figure 3 and Figure 10 In some embodiments, the connecting component 20 further includes a third connector 23, which includes a third connecting post 231 that passes through a second through hole 222 to limit the elastic deformation of the second elastic buckle 221.

[0108] By setting the third connecting post 231 of the third connector 23 to pass through the second through hole 222, it is possible to restrict the inner side of the second elastic buckle 221, so that all the second elastic buckles 221 cannot easily undergo elastic deformation towards the second through hole 222, thereby improving the connection reliability of the second connector 22.

[0109] Furthermore, the third connector 23 also includes a third limiting cover plate 232, which abuts against the first side 101 of the rotating assembly 10 along the axial direction. One end of the third connecting post 231 is connected to the third limiting cover plate 232, and the other end of the third connecting post 231 passes through the second through hole 222.

[0110] Specifically, the third limiting cover 232 can abut against the outer wall of the sub-shaft bracket 111 of the rotating assembly 10 located on the first side 101. The large contact area between the third limiting cover 232 and the first side 101 of the rotating assembly 10 makes the rotating assembly 10 bear force evenly and improves the stability of the connection.

[0111] To make the structure between the rotating assembly 10 and the connecting assembly 20 more compact, in the embodiments of this application, the first side 101 of the rotating assembly 10 is provided with a first limiting groove 15, the second side 102 is provided with a second limiting groove, the shaft hole 13 penetrates the bottom wall of the first limiting groove 15 and the bottom wall of the second limiting groove, the first connecting member 21 and the third connecting member 23 are radially limited in the first limiting groove 15, and the second connecting member 22 is radially limited in the second limiting groove.

[0112] By providing the first limiting groove 15, the outer periphery of the first connector 21 and the third connector 23 can be limited, thereby reducing the radial deflection of the first connector 21 and the third connector 23 relative to the rotating assembly 10 and improving the reliability of the connection. Similarly, by providing the second limiting groove, the outer periphery of the second connector 22 can be limited, thereby reducing the radial deflection of the second connector 22 relative to the rotating assembly 10 and improving the reliability of the connection.

[0113] Furthermore, the first limiting groove 15 is interference-fitted with the third connecting member 23, and the second limiting groove is interference-fitted with the second connecting member 22.

[0114] By setting an interference fit, the outer periphery of the third connector 23 and the second connector 22 can be constrained by the sidewalls of the first limiting groove 15 and the second limiting groove, so that they do not easily detach from the first limiting groove 15 and the second limiting groove, and thus do not easily detach from the rotating assembly 10, thereby achieving a more reliable connection.

[0115] Specifically, the first limiting groove 15 can be a stepped groove, and the corresponding third connector 23 can have multiple stepped portions that mate with the sidewall of the first limiting groove 15. This increases the contact area and achieves a more reliable connection. Similarly, the second limiting groove can also be a stepped groove, and the corresponding second connector 22 can have multiple stepped portions that mate with the sidewall of the second limiting groove.

[0116] Please see Figure 1 and Figure 2 In some embodiments, the pitch angle adjustment mechanism 100 further includes a support base 30 and multiple support rods 40. The rotating shaft bracket 11 is mounted on the support base 30. One end of all the support rods 40 is rotatably connected to the support base 30, and all the support rods 40 are spaced apart from each other around the center of the support base 30.

[0117] By setting the support base 30, the rotating shaft bracket 11 can be reliably supported. By setting multiple support rods 40 that are spaced apart from each other around the center of the support base 30, good support can be formed with the ground in the external environment, making the rotation of the rotating shaft 12 more stable.

[0118] Specifically, the support rod 40 includes three rods, which are arranged radially around the center of the support base 30.

[0119] Based on the same inventive concept, this application also provides a fan, which includes a fan body and a pitch angle adjustment mechanism 100 in any of the above embodiments, and the fan body is connected to the rotating shaft 12.

[0120] Thus, the pitch angle of the fan body can be adjusted by rotating the shaft 12.

[0121] Specifically, the fan can be an outdoor fan.

[0122] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pitch angle adjustment mechanism, characterized in that, include: A rotating assembly includes a shaft bracket and a shaft, the shaft being rotatably mounted on the shaft bracket, and the rotating assembly further having a shaft hole passing through the shaft bracket and the shaft; and A connecting assembly includes a first connector and a second connector. One end of the first connector passes through the shaft hole from a first side of the rotating assembly along the axial direction and exits the shaft hole from a second side of the rotating assembly to connect with the rotating assembly. One end of the second connector passes through the interior of the first connector from the second side of the rotating assembly along the axial direction and exits from the first side of the rotating assembly to connect with the first connector. The first side and the second side are arranged opposite to each other along the axial direction. The second connector engages with the first connector. The second connector includes a plurality of second elastic buckles, all of which are arranged in a ring at intervals. Each second elastic buckle engages with the first connector. A second through hole is formed between all the second elastic buckles.

2. The pitch angle adjustment mechanism according to claim 1, characterized in that, The first connector engages with the rotating assembly.

3. The pitch angle adjustment mechanism according to claim 2, characterized in that, The first connector includes a plurality of first elastic buckles, all of which are arranged in a ring at intervals, and each first elastic buckle engages with the rotating component; a first through hole is formed between all the first elastic buckles for the second connector to pass through.

4. The pitch angle adjustment mechanism according to claim 3, characterized in that, The shaft hole penetrates the first outer side wall of the rotating assembly, the first outer side wall is located on the second side of the rotating assembly, and all of the first elastic buckles abut against the first outer side wall axially.

5. The pitch angle adjustment mechanism according to claim 3, characterized in that, All of the first elastic fasteners are attached to one end of the first connector, and the other end of the first connector abuts against the first side of the rotating assembly along the axial direction.

6. The pitch angle adjustment mechanism according to claim 1 or 2, characterized in that, The first connector has a first through hole that penetrates the second outer side wall of the first connector. The second outer side wall is located on the first side of the rotating assembly, and all of the second elastic buckles abut against the second outer side wall axially.

7. The pitch angle adjustment mechanism according to claim 6, characterized in that, The second elastic fastener is attached to one end of the second connector, and the other end of the second connector abuts against the second side of the rotating assembly along the axial direction.

8. The pitch angle adjustment mechanism according to claim 1 or 2, characterized in that, The connecting assembly further includes a third connector, which includes a third connecting post that passes through the second through hole to limit the elastic deformation of the second elastic buckle.

9. The pitch angle adjustment mechanism according to claim 8, characterized in that, The third connector further includes a third limiting cover plate, which abuts against the first side of the rotating assembly along the axial direction. One end of the third connecting post is connected to the third limiting cover plate, and the other end of the third connecting post passes through the second through hole.

10. The pitch angle adjustment mechanism according to claim 8, characterized in that, The first side of the rotating assembly is provided with a first limiting groove, and the second side is provided with a second limiting groove. The shaft hole penetrates the bottom wall of the first limiting groove and the bottom wall of the second limiting groove. The first connecting member and the third connecting member are radially limited within the first limiting groove, and the second connecting member is radially limited within the second limiting groove.

11. The pitch angle adjustment mechanism according to claim 1, characterized in that, The rotating shaft is in frictional engagement with the rotating shaft bracket along the axial direction.

12. The pitch angle adjustment mechanism according to claim 11, characterized in that, The rotating assembly also includes a friction assembly, the shaft hole passes through the friction assembly, and the friction assembly is axially disposed on the rotating shaft support and the rotating shaft support.

13. The pitch angle adjustment mechanism according to claim 12, characterized in that, The friction assembly includes a first friction plate and a second friction plate. The shaft hole passes through the first friction plate and the second friction plate. The first friction plate is axially disposed between one side of the rotating shaft and the rotating shaft support, and the second friction plate is axially disposed between the opposite side of the rotating shaft and the rotating shaft support.

14. The pitch angle adjustment mechanism according to claim 1, characterized in that, The pitch angle adjustment mechanism also includes a support base and multiple support rods. The rotating shaft bracket is installed on the support base. One end of all the support rods is rotatably connected to the support base, and all the support rods are spaced apart from each other around the center of the support base.

15. A fan, characterized in that, It includes a fan body and a pitch angle adjustment mechanism as described in any one of claims 1 to 14, wherein the fan body is connected to the rotating shaft.

16. The fan according to claim 15, characterized in that, The fan in question is an outdoor fan.

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