Improved light-weight fan blade shaft sleeve

Abstract

The utility model relates to the technical field of motor accessories, and discloses an improved light-weight fan blade shaft sleeve, which comprises a fan blade connecting part and a shaft connecting part which are integrally formed, and a plurality of groups of flower grooves which are uniformly distributed are formed at one end, connected with the shaft connecting part, of the fan blade connecting part; a clamping groove is formed in the middle end of the shaft connecting part. The flower grooves are formed in the fan blade connecting parts, so that the attractiveness of a product can be improved, the product quality can be reduced, consumables are reduced, and the cost is reduced; and the clamping groove is formed in the shaft connecting part, so that a worker can conveniently grab the fan blade shaft sleeve, the falling risk is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, in particular to an improved lightweight fan blade shaft sleeve. Background Art

[0002] The fan blade shaft sleeve is a component connecting the motor shaft and the fan blade. The existing fan blade shaft sleeve, as shown in the attached instructions Figure 5 、 6 , includes a disc and a shaft sleeve. A plurality of fan blade fixing holes are provided on the disc, and a "one"-shaped groove or a "cross"-shaped groove is formed at one end of the shaft sleeve for installing a locking pin. The existing fan blade shaft sleeve has poor aesthetics. During assembly, the worker grabs the outer wall of the shaft sleeve. However, since the outer wall of the shaft sleeve is relatively smooth and the whole fan blade shaft sleeve has a certain weight, the product is likely to fall during the grabbing process, affecting the assembly efficiency and causing bumps and scratches on the product. Second, during the assembly process, the locking pin needs to be rotated multiple times with appropriate pressing force and rotation speed to install the locking pin into the "one"-shaped groove or the "cross"-shaped groove, and the assembly of the locking pin has a certain difficulty. Content of the Utility Model

[0003] The purpose of the utility model is to provide an improved lightweight fan blade shaft sleeve. By providing a flower groove at the fan blade connection part, the aesthetics of the product can be increased, the product quality can be reduced, the consumables can be reduced, and thus the cost can be reduced. By providing a clamping groove on the shaft connection part, it is convenient for the worker to grab the fan blade shaft sleeve, reduce the risk of dropping, and improve the assembly efficiency.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] An improved lightweight fan blade shaft sleeve includes an integrally formed fan blade connection part and a shaft connection part. A plurality of groups of evenly distributed flower grooves are formed at one end where the fan blade connection part is connected to the shaft connection part. The shape of the flower groove can be triangular, trapezoidal, etc. By providing the flower groove, firstly, the aesthetics can be increased, and secondly, the weight of the whole fan blade shaft sleeve can be reduced, thereby reducing the consumables for die casting and the cost.

[0006] A clamping groove is formed at the middle end of the shaft connection part. By providing the clamping groove, it is convenient to manually hold the fan blade shaft sleeve during assembly, avoid slipping and dropping phenomena, thereby facilitating assembly and improving assembly efficiency. Since the overall weight of the fan blade shaft sleeve is reduced, the labor intensity of the worker can also be reduced.

[0007] The utility model is further provided that: outer transition taper parts and inner transition taper parts are formed at both ends of the clamping groove, and the taper of the outer transition taper part is greater than the taper of the inner transition taper part.

[0008] Through the above technical solution, by providing the transition taper parts, sharp edges and corners will not be generated at both ends of the clamping groove, thereby preventing the worker from being scratched when taking the workpiece.

[0009] The taper α of the outer transition cone part is not less than 15 degrees. By setting the taper of the outer transition cone part to be greater than or equal to 15 degrees, it is made steeper so that the workpiece will not slip due to gentle transition and cannot be held firmly.

[0010] The present utility model is further configured as: a limiting boss is formed at one end of the fan blade connecting part away from the shaft connecting part, and a radially penetrating V-shaped groove is formed on the limiting boss. The V-shaped groove can be adapted to lock pins with various different diameters, thereby improving universality and practicability. At the same time, the V-shaped groove facilitates the assembly work of the lock pins.

[0011] The present utility model is further configured as: an arc bottom surface matching the lock pin is formed at the bottom of the V-shaped groove. The arc bottom surface can be attached to the matching lock pin, thereby improving the supporting ability of the V-shaped groove.

[0012] The limiting boss is a stepped boss;

[0013] The lowest end of the arc bottom surface is arranged close to the step surface of the limiting boss or the lowest end of the arc bottom surface is tangent to the step surface of the limiting boss. After the lock pin is inserted into the V-shaped groove, both ends thereof can abut against the step surface of the limiting boss, further improving the supporting and locking abilities.

[0014] The present utility model is further configured as: guiding conical surfaces are formed on both sides at the end of the V-shaped groove, and the two guiding conical surfaces on the same side are arranged in an "eight" shape. By arranging the guiding conical surfaces, the lock pin can be further conveniently sleeved into the V-shaped groove, thereby improving the assembly efficiency.

[0015] The present utility model is further configured as: a plurality of uniformly distributed knife marks are formed on the outer wall of the clamping groove. By setting the knife marks on the clamping groove during the turning process, the friction force between the worker and the workpiece can be increased, and the manual clamping of the workpiece can be made more stable and not easy to drop.

[0016] The prominent effect of the present utility model is:

[0017] Compared with the prior art, by providing a flower groove on the fan blade connecting part, the aesthetics of the product can be increased, the product quality can be reduced, the consumables can be reduced, and thus the cost can be reduced;

[0018] By providing a clamping groove on the shaft connecting part, it is convenient for the staff to grasp the fan blade shaft sleeve, reduces the risk of dropping, and improves the assembly efficiency;

[0019] The lock pin can be conveniently installed into the V-shaped groove through the V-shaped groove. By providing two guiding conical surfaces arranged in an "eight" shape at the end of the V-shaped groove, the installation of the lock pin can be further facilitated, thereby further improving the assembly efficiency. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the present utility model;

[0021] Figure 2 is a schematic structural view of the other side view direction of the present utility model;

[0022] Figure 3 is an assembly schematic view of the present utility model with a shaft and a locking pin;

[0023] Figure 4 is a half-sectional view of the present utility model;

[0024] Figure 5 , Figure 6 is a schematic view of a fan blade bushing of the prior art.

[0025] Reference numerals: 10, fan blade connection part; 101, spline groove; 102, limiting boss; 103, V-shaped groove; 104, arc bottom surface; 105, guiding conical surface;

[0026] 20, shaft connection part; 201, clamping groove; 202, outer transition cone part; 203, inner transition cone part; 204, tool marks;

[0027] 90, shaft; 91, locking pin. Specific embodiments

[0028] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0029] The following will be described with reference to Figures 1 to 4 the present utility model:

[0030] An improved lightweight fan blade bushing, as Figure 1 shown, includes an integrally formed fan blade connection part 10 and a shaft connection part 20. One end of the fan blade connection part 10 connected to the shaft connection part 20 is formed with multiple groups of evenly distributed spline grooves 101. The shape of the spline grooves can be triangular, trapezoidal, etc. By setting the spline grooves, on the one hand, the aesthetics can be increased, and on the other hand, the weight of the entire fan blade bushing can be reduced, thereby reducing the consumables for die casting and reducing costs;

[0031] The middle end of the shaft connection part 20 is formed with a clamping groove 201. By setting the clamping groove, it is convenient to manually hold the fan blade bushing during assembly, avoiding slipping and dropping phenomena, thereby facilitating assembly and improving assembly efficiency. Since the overall weight of the fan blade bushing is reduced, the labor intensity of workers can also be reduced.

[0032] As Figure 4As shown, outer transition taper portions 202 and inner transition taper portions 203 are formed at both ends of the clamping groove 201, and the taper of the outer transition taper portion 202 is greater than that of the inner transition taper portion 203.

[0033] Through the above technical solution, by providing the transition taper portions, sharp corners will not be generated at both ends of the clamping groove, thereby preventing the staff from being scratched when picking up the workpiece.

[0034] The taper α of the outer transition taper portion 202 is not less than 15 degrees. By setting the taper of the outer transition taper portion to be greater than or equal to 15 degrees, it is made steeper, so that the workpiece will not slide off or be unable to be held due to gentle transition.

[0035] A number of evenly distributed tool marks 204 are formed on the outer wall of the clamping groove 201. By providing tool marks on the clamping groove during the turning process, the workpiece can be more stably clamped manually and is not easily dropped.

[0036] As Figure 2 shown, a limiting boss 102 is formed at one end of the fan blade connecting portion 10 away from the shaft connecting portion 20, and a radially penetrating V-shaped groove 103 is formed on the limiting boss 102. The V-shaped groove can be adapted to lock pins of various different diameters, thereby improving the versatility and practicability. At the same time, the V-shaped groove facilitates the assembly work of the lock pins.

[0037] An arc bottom surface 104 matching the lock pin is formed at the bottom of the V-shaped groove 103. The arc bottom surface can be fitted with the matching lock pin, thereby improving the supporting ability of the V-shaped groove.

[0038] The limiting boss 102 is a stepped boss;

[0039] The lowest end of the arc bottom surface 104 is arranged close to the step surface of the limiting boss 102 or the lowest end of the arc bottom surface 104 is tangent to the step surface of the limiting boss 102. After the lock pin is inserted into the V-shaped groove, both ends thereof can abut against the step surface of the limiting boss, further improving the supporting and locking abilities.

[0040] Guide taper surfaces 105 are formed on both sides at the end of the V-shaped groove 103. The two guide taper surfaces 105 on the same side are arranged in a "V" shape. By providing the guide taper surfaces, it is further convenient for the lock pin to be sleeved into the V-shaped groove, thereby improving the assembly efficiency.

[0041] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved lightweight fan blade sleeve, comprising a fan blade connection portion (10) and a shaft connection portion (20) formed in one piece, characterized in that: One end of the fan blade connecting portion (10) connected to the shaft connecting portion (20) is formed with a plurality of groups of evenly distributed flower grooves (101); A clamping groove (201) is formed at the middle end of the shaft connecting portion (20).

2. The improved lightweight fan blade sleeve according to claim 1, characterized in that: An outer transition cone (202) and an inner transition cone (203) are formed at both ends of the clamping groove (201), and the taper of the outer transition cone (202) is greater than the taper of the inner transition cone (203).

3. The improved lightweight fan blade sleeve according to claim 2, characterized in that: The taper α of the outer transition cone (202) is not less than 15 degrees.

4. The improved lightweight fan blade sleeve according to claim 1, characterized in that: A limiting boss (102) is formed at one end of the blade connection portion (10) away from the shaft connection portion (20), and a radially penetrating V-shaped groove (103) is formed on the limiting boss (102).

5. The improved lightweight fan blade sleeve according to claim 4, characterized in that: The bottom of the V-shaped groove (103) is formed with an arc bottom surface (104) that matches the locking pin.

6. The improved lightweight fan blade sleeve according to claim 5, characterized in that: The limiting boss (102) is a stepped boss; The lowest end of the circular arc bottom surface (104) is arranged close to the step surface of the limiting boss (102), or the lowest end of the circular arc bottom surface (104) is arranged tangent to the step surface of the limiting boss (102).

7. An improved lightweight fan blade sleeve according to claim 4 or 5, characterized in that: A guide cone surface (105) is formed on both sides of the end of the V-shaped groove (103), and the two guide cone surfaces (105) on the same side are arranged in an "eight" shape.

8. The improved lightweight fan blade sleeve according to claim 1, characterized in that: A plurality of evenly distributed knife marks (204) are formed on the outer wall of the clamping groove (201).

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