Motor shaft and fan blade positioning structure and air conditioner

Abstract

The utility model discloses a motor shaft and fan blade positioning structure and an air conditioner, and the motor shaft and fan blade positioning structure comprises a motor shaft which is provided with a locking part; the fan blade comprises a coupler, the coupler is provided with a shaft hole, an assembling hole and a locking piece, the assembling hole is communicated with the shaft hole, and the locking piece is movably arranged in the assembling hole and can stretch out and draw back relative to the assembling hole; wherein the motor shaft penetrates through the shaft hole, and the locking piece extends out of the assembling hole and is matched with the locking part to lock the motor shaft and the coupler. The assembly hole communicated with the shaft hole is formed in the coupler connected with the fan blade, the movable locking piece is arranged in the assembly hole, the locking part is arranged on the motor shaft, and when the motor shaft penetrates through the shaft hole, the locking piece and the locking part abut against each other and are locked with each other, so that the air conditioner fan blade and the motor are rapidly fixed. The assembling steps of the fan blades and the motor of the air conditioner are simplified, and the production efficiency of the air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner equipment production, and particularly relates to a positioning structure between a motor shaft and a wind leaf and an air conditioner. Background Art

[0002] During the production process of an air conditioner, when fixing the wind leaf of the air conditioner to the motor, bolts are often used to lock the flat position of the motor shaft, and the bolts are passed through the components on the wind leaf to fix the wind leaf and the motor. However, fixing the wind leaf and the motor with bolts is rather cumbersome in the actual production process. It often requires first aligning the empty positions of the wind leaf and the motor shaft, then aligning the screw holes for locking the bolts on the wind leaf with the flat position on the motor shaft, and finally locking the bolts with an electric screwdriver. Therefore, in order to stably fix the wind leaf and the fan, a large amount of time is consumed in the production process, which is not conducive to improving production efficiency. For this reason, there is an urgent need for a positioning structure between a motor shaft and a wind leaf to solve the problem that the assembly steps of the wind leaf and the motor of the air conditioner are cumbersome and not conducive to improving production efficiency. Summary of the Utility Model

[0003] An embodiment of the utility model provides a positioning structure between a motor shaft and a wind leaf and an air conditioner, aiming to solve the problem that the assembly steps of the wind leaf and the motor of the air conditioner are cumbersome and not conducive to improving production efficiency in the prior art.

[0004] In the first aspect, the utility model provides a positioning structure between a motor shaft and a wind leaf, including: a motor shaft provided with a locking portion; a wind leaf including a coupling, the coupling being provided with a shaft hole, an assembly hole and a locking member, the assembly hole being communicated with the shaft hole, the locking member being movably disposed in the assembly hole and being capable of telescoping relative to the assembly hole; wherein, the motor shaft passes through the shaft hole, and the locking member extends out of the assembly hole to cooperate with the locking portion to lock the motor shaft and the coupling.

[0005] In the positioning structure between a motor shaft and a wind leaf provided by the utility model, the coupling further includes an end cover, the assembly hole penetrates through the outer side wall of the coupling along the radial direction of the coupling, and the end cover is disposed on a side of the assembly hole away from the shaft hole.

[0006] In the positioning structure between a motor shaft and a wind leaf provided by the utility model, the coupling further includes an elastic member, one end of the elastic member is connected to the locking member, and the other end of the elastic member is connected to the end cover.

[0007] In the positioning structure between a motor shaft and a wind leaf provided by the utility model, the locking portion is formed by a recess along the radial direction of the circumferential side wall of the motor shaft, and a fitting convex portion is provided on a side of the locking member close to the motor shaft, and the fitting convex portion is fitted into the locking portion.

[0008] In the motor shaft and blade positioning structure provided by the present utility model, a guiding sleeve is provided on one side of the assembly hole close to the shaft hole. The guiding sleeve is coaxially arranged with the assembly hole. The locking member is further provided with a guiding portion, which is arranged on the side of the fitting convex portion away from the shaft hole, and the guiding portion is slidably arranged in the guiding sleeve.

[0009] In the motor shaft and blade positioning structure provided by the present utility model, a guiding inclined surface is provided on the side of the fitting convex portion facing the insertion of the motor shaft. The guiding inclined surface cooperates with the shaft end of the motor shaft to retract the fitting convex portion into the assembly hole.

[0010] In the motor shaft and blade positioning structure provided by the present utility model, a limiting portion is further provided at one end of the locking member close to the elastic member, and the limiting portion protrudes along the circumferential side of the locking member.

[0011] In the motor shaft and blade positioning structure provided by the present utility model, the locking member is further provided with a right-angle groove, which is arranged at the connection of the fitting convex portion and the guiding portion. The edge of the locking portion is provided with a right-angle side, and the right-angle side cooperates with the right-angle groove to lock the motor shaft and the locking member.

[0012] In the motor shaft and blade positioning structure provided by the present utility model, multiple groups of the assembly holes and the locking members are uniformly distributed on the coupling with the axis of the shaft hole as the axis.

[0013] In a second aspect, the present utility model provides an air conditioner, including the motor shaft and blade positioning structure as described above.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the technical solution of the present utility model, by providing an assembly hole communicated with the shaft hole on the coupling connecting the blade, arranging a movable locking member in the assembly hole, and providing a locking portion on the motor shaft, when the motor shaft passes through the shaft hole, the locking member abuts against the locking portion and locks each other, so that the air conditioner blade and the motor are quickly fixed. The assembly steps of the air conditioner blade and the motor are simplified, and the production efficiency of the air conditioner is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1Front view schematic diagram of the impeller and coupling of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0018] Figure 2 Left view schematic diagram of the impeller and coupling of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0019] Figure 3 Sectional view schematic diagram of the coupling of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0020] Figure 4 Partial enlarged view A of the sectional view schematic diagram of the coupling of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0021] Figure 5 Top view schematic diagram of the coupling of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0022] Figure 6 Sectional view schematic diagram of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0023] Figure 7 Partial enlarged view B of the sectional view schematic diagram of the motor shaft and impeller positioning structure in the embodiment of the present utility model;

[0024] Figure 8 Schematic diagram of the installation process of the motor shaft and impeller positioning structure in the embodiment of the present utility model Figure 1 ;

[0025] Figure 9 Schematic diagram of the installation process of the motor shaft and impeller positioning structure in the embodiment of the present utility model Figure 2 ;

[0026] Figure 10 Schematic diagram of the installation process of the motor shaft and impeller positioning structure in the embodiment of the present utility model Figure 3 ;

[0027] Figure 11 Schematic diagram of the position relationship between the fan and the impeller after the motor shaft and impeller positioning structure in the embodiment of the present utility model are assembled;

[0028] Explanation of figure marks:

[0029] 1. Driving motor; 11. Motor shaft; 111. Shaft end; 12. Locking part; 121. Right-angled side;

[0030] 2. Impeller;

[0031] 3. Coupling; 31. Shaft hole; 32. End cover; 33. Spring; 34. Assembly hole; 341. Alignment hole; 342. Alignment sleeve;

[0032] 4. Locking member; 41. Fitting convex part; 411. Guide inclined surface; 42. Alignment part; 43. Limit part; 44. Right-angle groove. Detailed implementation manner

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] The present utility model proposes a positioning structure for a motor shaft and a wind blade, aiming to solve the problem that the assembly steps of the wind blade and the motor in an air conditioner are cumbersome in the prior art, which is not conducive to improving production efficiency. Refer to Figures 1 to 11, the motor shaft and the blade positioning structure includes: a motor shaft 11, the motor shaft 11 is provided with a locking portion 12; a blade 2, including a coupling 3, the coupling 3 is provided with a shaft hole 31, an assembly hole 34 and a locking member 4, the assembly hole 34 is communicated with the shaft hole 31, the locking member 4 is movably disposed in the assembly hole 34 and can be telescoped relative to the assembly hole; wherein, the motor shaft 11 passes through the shaft hole 31, and the locking member 4 extends out of the assembly hole 34 to cooperate with the locking portion 4 to lock the motor shaft 11 and the coupling 3. A motor shaft 11 is provided on the driving motor 1 for power output, a locking portion 12 is provided on the motor shaft 11, an assembly hole 34 is communicated with the shaft hole 31 for connecting the motor shaft 11 in the coupling 3 of the blade 2, and a locking member 4 with a certain sliding freedom is provided in the assembly hole 34. After the motor shaft 11 passes through the shaft hole 31, the locking portion 12 and the locking member 4 cooperate with each other to form a stable locking connection structure, and the stable installation between the motor shaft 11 and the blade 2 can be completed. The purpose of arranging the locking member 4 in the assembly hole 34 is to provide a certain degree of freedom of movement for the locking member 4. For example, when the motor shaft 11 and the coupling 3 are locked by the locking member 4 protruding into the shaft hole 31 and engaging with the concave locking portion on the motor shaft 11 to form a stable connection, then when the motor shaft 11 is inserted into the shaft hole 31, the locking member 4 needs to retract into the assembly hole 34 to provide space for the passage of the motor shaft 11. In order to reduce the movement of the blade 2 in the axial direction of the motor shaft 11 after the motor shaft 11 and the coupling 3 are combined and avoid causing harm during use, a sliding movement relationship needs to be set between the locking member 4 and the assembly hole 34 to limit the freedom of movement of the locking member 4. After the locking member 4 and the locking portion 12 are locked, the locking member 4 and the assembly hole 34 can no longer perform relative sliding movement, and the locking portion 12 can only rotate along the axis under the drive of the motor shaft 11, thereby driving the blade 2 to rotate, and the blade 2 will naturally not move in the axial direction of the motor shaft 11.

[0036] Compared with the prior art, in the technical solution of the present invention, by providing an assembly hole communicated with the shaft hole 31 on the coupling 3 connecting the blade 2, a movable locking member 4 is provided in the assembly hole 34, a locking portion 12 is provided on the motor shaft 11, and when the motor shaft 11 passes through the shaft hole, the locking member 4 abuts against the locking portion 12 and locks each other, so that the air-conditioning blade 2 and the motor are quickly fixed. The assembly steps of the air-conditioning blade 2 and the motor are simplified, and the production efficiency of the air conditioner is improved.

[0037] In one embodiment, the locking member 4 can be a flexible piece with one end fixed to the coupling 3 and the other end capable of sliding in the assembly hole 34. The slidable end of the flexible piece is located in the shaft hole 31 in the non-loaded state. A locking portion 12 in the form of a groove can be provided on the motor shaft 11, which can engage with the slidable end of the flexible piece to lock. During installation, when the motor shaft 11 passes through the shaft hole 31, the shaft end 111 contacts the flexible piece and pushes it back into the assembly hole 34. When the slidable end of the flexible piece aligns with the groove-shaped locking portion 12, the flexible piece rebounds and falls into the locking portion 12, and the flexible piece and the locking portion 12 lock with each other. To enable the coupling 3 to have better dynamic balance, the flexible piece can also be annular, and there can be multiple assembly holes 34, which are symmetrically distributed about the axis of the motor shaft 11.

[0038] In one embodiment, referring to Figure 3 and Figure 6 , the coupling 3 further includes an end cap 32. The assembly hole 34 penetrates through the outer wall of the coupling 3 along the radial direction of the coupling 3, and the end cap 32 is provided on the side of the assembly hole 34 away from the shaft hole 31. In the actual production process, usually the coupling 3 and the fan blade 2 need to be assembled together, that is, the coupling 3 and the fan blade 2 are separately produced components. Connecting the assembly hole 34 and the outer wall of the coupling 3 facilitates the installation of the locking member 4 even when manufacturing the assembly hole 34. At the same time, to ensure the integrity of the coupling 3, prevent dust or other debris from entering the interior of the assembly hole 34, and avoid other parts installed in the assembly hole 34 from slipping out, an end cap 32 that can block the assembly hole 34 needs to be installed on the side of the assembly hole 34 close to the outer wall of the coupling 3. Setting the end cap 32 to ensure the integrity of the coupling 3 is beneficial to enhancing the overall stiffness of the coupling 3, preventing the coupling 3 from deforming due to the stress release of the parts connected to it after the coupling 3 is assembled into the product, avoiding the dynamic balance failure of the fan blade 2 or the coupling 3, generating noise or product damage, thereby extending the service life of the equipment and improving its reliability.

[0039] In one embodiment, referring to Figure 3 and Figure 6 , the coupling 3 further includes an elastic member. One end of the elastic member is connected to the locking member, and the other end of the elastic member is connected to the end cap. In the embodiment of the present invention, the elastic member refers to the spring 33, but is not limited to the spring 33, and also includes other part bodies that can achieve elastic expansion and contraction, such as flexible pieces and pneumatic springs. Taking Figure 3For example, the spring 33 is disposed on the side of the assembly hole 34 away from the motor shaft 11. One end of the spring 33 is connected to the locking member 4, and the other end of the spring 33 is connected to the end cover 32. The spring 33 being disposed on the side of the assembly hole 34 away from the motor shaft 11 can ensure that the spring 33 provides the necessary elastic force for the locking member 4, helping the locking member 4 to return to the locking position automatically when there is no external force. One end of the spring 33 is connected to the locking member 4. When the locking member 4 slides to the locking portion 12, the spring 33 can provide an appropriate force so that the locking member 4 can firmly hold the motor shaft 11 to prevent it from loosening during operation. The other end of the spring 33 is connected to the end cover 32. Such a design enhances the structural stability and at the same time ensures that the spring 33 will not fall off during operation. The fixed relationship with the end cover 32 also helps to maintain the uniform distribution of the stress of the spring 33 and enhances the durability of the entire coupling 3. The introduction of the spring 33 mechanism improves the automatic locking ability of the locking member 4.

[0040] In one embodiment, referring to Figure 6 , the locking portion 12 is formed by a radial depression on the circumferential side wall of the motor shaft 11. The locking member 4 is provided with a fitting convex portion 41 on the side close to the motor shaft 11, and the fitting convex portion 41 is fitted into the locking portion 12. The locking portion 12 is formed by a depression from the outer side wall of the motor shaft 11 towards the axis. The concave locking portion 12 provides a definite fitting position for the locking member 4, enabling the locking member 4 to better fit into the locking portion 12 when locking with the motor shaft 11, thereby enhancing the firmness of the connection. At the same time, the concave locking portion 12 is also easier to manufacture compared to a locking portion protruding from the motor shaft 11, improving the production efficiency. When the locking member 4 slides to the locking position, the fitting convex portion 41 on the locking member 4 can extend into the shaft hole 31 to ensure a stable locking relationship between the locking member 4 and the motor shaft 11, effectively preventing the relative movement of the motor shaft 11 during operation and enhancing the safety and reliability of the overall system. With the cooperation of the fitting convex portion 41 and the concave locking portion 12, the locking mechanism between the motor shaft 11 and the coupling 3 is more precise and firm, reducing the risk of loosening caused by vibration or improper operation.

[0041] In one embodiment, referring to Figure 3 , Figure 4 and Figure 6, a guiding sleeve 342 is provided on one side of the assembly hole 34 close to the shaft hole 31. The guiding sleeve 342 is coaxially arranged with the assembly hole 34. The locking member 4 is further provided with a guiding portion 42. The guiding portion 42 is arranged on the side of the fitting convex portion 41 away from the shaft hole 31. The guiding portion 42 is slidably arranged in the guiding sleeve 342. A guiding sleeve 342 is provided on one side of the assembly hole 34 close to the shaft hole 31. The guiding sleeve 342 is coaxially arranged with the assembly hole 34. There is a guiding hole 341 in the center of the guiding sleeve. The setting of the guiding sleeve 342 enables the guiding hole 341 to provide support for the accurate positioning of the locking member 4 during the assembly process, ensuring that the locking member 4 can be correctly aligned and installed during assembly. The guiding portion 42 is arranged on the side of the fitting convex portion 41 away from the motor shaft 11. The guiding portion 42 is slidably arranged in the guiding hole 341. When the guiding portion 42 slides in the guiding hole 341, it can effectively guide the locking member 4 into the correct position, avoid the locking instability caused by skew, ensure that the locking member 4 can smoothly engage with the locking portion 12 during movement, thereby improving the assembly accuracy and assembly smoothness, and reducing the risk of failures caused by improper assembly. When the guiding sleeve 342 is an independent part, POM material can be used to make the up and down movement of the locking member 4 smoother. Further, in order to make the contact between the inner wall of the guiding hole 341 and the guiding portion 42 smoother, the coaxiality of the guiding hole 341 and the assembly hole better, and it is convenient for the machining and manufacturing of the guiding sleeve 341, the guiding sleeve 342 can be directly machined out through one-time machining when machining the assembly hole 34. Compared with directly installing a guiding sleeve 342 with an interference fit with the assembly hole 34 on the coupling 3, using one-time machining can more easily machine out a guiding hole 341 with higher precision, thereby improving the fit between the guiding hole 341 and the guiding portion 42, and reducing the installation instability of the locking member 4 caused by tolerances.

[0042] In one embodiment, referring to Figure 3 , Figure 6 , Figures 8 to 10 , a guiding inclined surface 411 is provided on the side of the fitting convex portion 41 facing the insertion direction of the motor shaft 11. The guiding inclined surface 411 cooperates with the shaft end 111 of the motor shaft 11 to retract the fitting convex portion 41 into the assembly hole 34. A guiding inclined surface 411 is provided on the side of the fitting convex portion 41 facing the insertion direction of the motor shaft 11, so that when the locking member 4 contacts the motor shaft 11 or the shaft hole 31 during the insertion process, the guiding inclined surface 411 can guide the fitting convex portion 41 to retract inward. When the motor shaft 11 is inserted into the shaft hole 31, the guiding inclined surface 411 can smoothly contact the shaft end 111 of the motor shaft 11, thereby giving the entire locking member 4 an upward movement force, making it slide in a direction away from the motor shaft 11, so that the motor shaft 11 is less resistant to movement when inserted into the shaft hole 31, especially when the shaft end 111 passes through the fitting convex portion 41, improving the assembly smoothness and production efficiency.

[0043] In one embodiment, with reference to Figure 3 and Figure 6 , a limiting portion 43 is further provided at one end of the locking member 4 close to the elastic member, and the limiting portion 43 protrudes along the circumferential side of the locking member. A limiting portion 43 is further provided at one end of the locking member 4 close to the spring 33. The outer diameter dimension of the limiting portion 43 is larger than the inner diameter dimension of the guiding hole 341 on the guiding sleeve 341, and the outer diameter dimension of the limiting portion 43 is larger than that of the guiding portion 42. In the case where the size of the shaft hole 31 is large and the size of the locking member 4 is small, setting the limiting portion 43 and designing the size of the limiting portion 43 to be that of the guiding hole 341 can effectively limit the position of the locking member 4 during the assembly process, ensuring that the locking member 4 will not excessively invade the shaft hole 31 and overly hinder the installation of the motor shaft 11. The limiting portion 43 and the upper end of the guiding hole 341 cooperate to form a physical barrier, hindering the locking member 4 from continuing to move towards the shaft hole 31, thereby ensuring its stability in the correct position and effectively avoiding potential failures or damages caused by the improper position of the locking member 4.

[0044] In one embodiment, with reference to Figure 4 and Figure 7 , the locking member 4 is further provided with a right-angle groove 44, and the right-angle groove 44 is provided at the connection between the fitting convex portion 41 and the guiding portion 42. A right-angle edge 121 is provided at the edge of the locking portion, and the right-angle edge 121 cooperates with the right-angle groove 44 to lock the motor shaft 11 and the locking member 4. In order to further enhance the combination firmness between the locking member 4 and the locking portion 12 and prevent loosening or falling off caused by vibration or other external forces during use, a right-angle groove 44 is provided at the connection between the fitting convex portion 41 and the guiding portion 42, and a right-angle edge 121 is provided at the edge of the locking portion 12. Through the mechanical cooperation relationship between the right-angle edge 121 and the right-angle groove 44, during the assembly process, the locking member 4 can be stably locked on the motor shaft 11, and the connection between the motor shaft 11 and the wind blade 2 is more stable. Further, after a guiding inclined surface 411 is provided on the fitting convex portion 41, the right-angle edge 121 and the right-angle groove 44 can also prevent, due to dimensional errors during the production process, after the fitting convex portion 41 is combined with the locking portion 12, when the motor shaft 11 still has an insertion force, the guiding inclined surface 411 will continue to bring a force to the locking member 4 to move the locking member 4 outward from the shaft, causing the locking member 4 to become unlocked from the locking portion 12.

[0045] In one embodiment, multiple groups of assembly holes 34 and locking members 4 are evenly distributed on the coupling 3 around the axis of the shaft hole 31. The multiple assembly holes 34 and locking members 4 being evenly distributed on the coupling 3 around the axis of the shaft hole 31 can ensure that during the assembly and locking processes, the multiple assembly holes 34 and locking members 4 can effectively disperse the load brought by the motor shaft 11, reduce local stress concentration, and enhance the overall stability of the structures of the coupling 3 and the wind blade 2. This evenly distributed design also enables the coupling 3 to have better dynamic balance during operation, reduce the generated vibration and noise, thereby enhancing the performance and service life of the entire motor shaft and wind blade positioning structure, and enabling the air conditioner equipped with this motor shaft and wind blade positioning structure to have better overall mechanical system reliability.

[0046] To further illustrate the function of the guiding inclined surface 411 during actual use, take Figure 6 、 Figure 8 、 Figure 9 and Figure 10 as examples. Referring to Figure 8 , when the drive motor 1 is installed into the wind blade 2, first, the shaft end 111 of the motor shaft 11 contacts the edge of the shaft hole 31. The combined action of the hemispherical shaft end 111 and the chamfer or fillet disposed on the edge of the shaft hole 31 guides the positional relationship between the motor shaft 11 and the shaft hole 31, enabling the motor shaft 11 to be correctly inserted into the shaft hole 31. At this time, the locking member 4 is in a state of protruding from the shaft hole 31. Referring to Figure 9 , when the hemispherical shaft end 111 contacts the guiding inclined surface 411 on the fitting convex portion 41, the locking member 4 has a tendency to move upward when the motor shaft 11 continues to move to the right. Referring to Figure 10 , when the motor shaft 11 continues to move to the right, the limiting portion 43 disengages from contact with the upper end of the guiding sleeve 341, the guiding portion 42 starts to slide in the guiding hole 341, the spring 33 starts to contract, the locking member 4 moves upward and retracts into the assembly hole 34, and there is enough space in the shaft hole 31 for the shaft end 111 of the motor shaft 11 to pass through. Referring to Figure 6 , when the motor shaft 11 continues to move to the right for a certain distance, the locking portion 12 comes below the locking member 4. Due to the loss of the support of the shaft wall of the motor shaft 11, the locking member 4 moves downward under the action of the spring 33, the guiding portion 42 starts to slide in the guiding hole 341, and when the limiting portion 43 contacts the upper end of the guiding sleeve 342, the locking member 4 stops moving downward. At this time, the locking member 4 stops in the locking portion 12, and the right-angle side 121 and the right-angle groove 44 are mutually engaged, and a stable connection is formed between the motor shaft 11 and the coupling 3.

[0047] The present utility model also provides an air conditioner including the above-mentioned motor shaft and wind blade positioning structure. Compared with the air conditioner in the prior art, this air conditioner is easier to be mechanically produced, has higher production efficiency, and is more convenient to assemble.

[0048] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A positioning structure for a motor shaft and a fan blade, characterized in that, Comprising: A motor shaft provided with a locking portion thereon. A wind blade, including a coupling. The coupling is provided with a shaft hole, an assembly hole and a locking member. The assembly hole communicates with the shaft hole. The locking member is movably disposed in the assembly hole and can telescopically move relative to the assembly hole. Wherein, the motor shaft passes through the shaft hole, and the locking member extends out of the assembly hole to cooperate with the locking portion to lock the motor shaft and the coupling.

2. The motor shaft and blade positioning structure according to claim 1, wherein, The coupling further includes an end cover. The assembly hole penetrates through the outer side wall of the coupling along the radial direction of the coupling, and the end cover is disposed on a side of the assembly hole away from the shaft hole.

3. The motor shaft and blade positioning structure according to claim 2, characterized in that, The coupling further includes an elastic member. One end of the elastic member is connected to the locking member, and the other end of the elastic member is connected to the end cover.

4. The motor shaft and the blade positioning structure according to claim 3, characterized in that, The locking portion is formed by a recess along the radial direction of the circumferential side wall of the motor shaft. A fitting convex portion is provided on a side of the locking member close to the motor shaft, and the fitting convex portion is fitted into the locking portion.

5. The motor shaft and blade positioning structure according to claim 4, characterized in that, A guiding sleeve is provided on a side of the assembly hole close to the shaft hole. The guiding sleeve is coaxially arranged with the assembly hole. The locking member is further provided with a guiding portion. The guiding portion is disposed on a side of the fitting convex portion away from the shaft hole, and the guiding portion is slidably disposed in the guiding sleeve.

6. The positioning structure of the motor shaft and the wind blade according to claim 5, wherein, A guiding inclined surface is provided on a side of the fitting convex portion facing the insertion of the motor shaft. The guiding inclined surface cooperates with the shaft end of the motor shaft to retract the fitting convex portion into the assembly hole.

7. The positioning structure of the motor shaft and the wind blade according to claim 5, characterized in that, A limiting portion is further provided on an end of the locking member close to the elastic member, and the limiting portion protrudes along the circumferential side of the locking member.

8. The positioning structure of the motor shaft and the wind blade according to claim 6, characterized in that, The locking member is further provided with a right-angle groove. The right-angle groove is disposed at the connection of the fitting convex portion and the guiding portion. A right-angle edge is provided on the edge of the locking portion, and the right-angle edge cooperates with the right-angle groove to lock the motor shaft and the locking member.

9. The motor shaft and blade positioning structure according to any one of claims 1 to 8, characterized in that, Multiple sets of the assembly holes and the locking members are uniformly distributed on the coupling with the axis of the shaft hole as the axis.

10. An air conditioner, characterized in that, Including the motor shaft and wind blade positioning structure according to any one of claims 1 to 9.

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