Motor bearing protective cover and protective device formed by same
Technical Field
The utility model relates to a motor protector.
Background
The outer rotor motor has the characteristics of compact structure, convenience in installation, reliability in operation, low noise, energy saving, high efficiency and the like, is widely used and is commonly used outdoors, but the bearing protection effect of the motor for the outer rotor fan used outdoors is not ideal. Such motor bearing protection has been developed to the second generation. The first generation is to use plastic cover and O-shaped sealing ring, the disadvantage of this kind of protective device is that the plastics are easy to age, easy to loosen outdoors, the service life is short; the second generation is the one used at present, firstly, an O-shaped sealing ring is added on a plastic cover, or an aluminum dustproof cover is used for sealing by sealing glue, and then a large aluminum cover or a large plastic cover is added to cover the whole end face of the motor end cover to achieve further protection. The method can play a certain role, but not only increases cost, but also increases process complexity and assembly difficulty.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a motor bearing protective cover and protector who constitutes thereof, not only the assembly is simple, and can effectively protect the motor bearing of external rotor fan.
In order to achieve the above object, the utility model discloses the technical scheme who takes is a motor bearing protective cover, the protective cover includes from inside to outside protective cover body, protection folded plate and the fixed otic placode that meets in proper order, integrated into one piece between protective cover body, protection folded plate and the fixed otic placode, there is an interior cavity on the protective cover body.
In an embodiment of the present invention, the protective cover body around the inner cavity is an annular baffle, and the annular baffle is fixedly connected to the protective folded plate.
In an embodiment of the present invention, the fixing ear plate is a flat ring-shaped plate structure.
In an embodiment of the present invention, the cross-sectional shape of the inner cavity is trapezoidal.
In an embodiment of the present invention, the height of the protective cover body is smaller than the height of the protective folded plate.
A motor bearing protection device comprises an end cover and a protection cover, wherein the end cover is provided with a mounting hole for mounting a motor rotating shaft, the protection cover is mounted at the tail end of the motor rotating shaft, and the protection cover is fixedly connected with the end cover in a sealing manner; the mounting hole is provided with annular bosses on the end covers at the periphery, the annular bosses are far away from one sides of the mounting hole, mounting grooves are formed in the side faces, the protection folded plates are matched with the annular bosses, and the fixing lug plates are located in the mounting grooves. The motor bearing is installed on the motor rotating shaft, and the protective cover is located in a mounting hole in the tail end of the motor rotating shaft so as to protect the motor bearing.
In an embodiment of the present invention, the protection folded plate is covered on the annular boss, and the fixing ear plate is fixed in the mounting groove.
In an embodiment of the present invention, the mounting groove is filled with a sealant. The fixed ear plate is sealed and fixed with the end cover through sealant.
In an embodiment of the present invention, the mounting groove is an annular groove.
The technical scheme has the following beneficial effects:
the utility model discloses protector through carrying out the improved design on second generation protector basis, protective performance has both been guaranteed to the protective cover structure after optimizing and the installation cooperation mode between protective cover and the end cover, and the obvious cost is reduced again, and simple process easy operation. Compare in traditional needs and carry out twice protection, the utility model discloses only need protect once just can reach the effect of original twice protection, only use a protective cover just can reach the protecting effect promptly, assemble simple, with low costs. The utility model discloses a this mode seals fixedly in being fixed in the mounting groove of end cover with the fixed otic placode of protective cover, has not only overcome original problem because of the narrow sealing glue difficulty that leads to in shield side, makes fixed more firm between protective cover and the end cover simultaneously, and the leakproofness is better, and technology is simpler.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is an enlarged view of a portion of fig. 2 according to the present invention;
fig. 4 is a partial enlarged view of an end cap according to an embodiment of the present invention.
Description of reference numerals: end cover 1, protective cover 2, motor shaft 3, motor bearing 4, mounting groove 10, annular boss 11, protective cover body 20, protection folded plate 21, fixed otic placode 22, mounting hole 100, interior concave cavity 200, ring baffle 201.
Detailed Description
The invention will be further described with reference to the following examples and figures 1 to 4.
Example 1
The utility model provides a motor bearing protective cover, as shown in fig. 1, protective cover 2 is ring shape structure, includes from inside to outside protective cover body 20, protection folded plate 21 and the fixed otic placode 22 that the ring meets in proper order, integrated into one piece between protective cover body 20, protection folded plate 21 and the fixed otic placode 22, protective cover 2's in this embodiment material is metallic aluminum, and accessible stamping forming obtains. In other embodiments, other materials, such as engineering plastics, etc., are also possible. The height of the protecting cover body 20 is smaller than that of the protecting flap 21, so that the structure of the protecting cover 2 is more reasonable. In other embodiments, the heights of the shield cover body 20 and the shield flap 21 are not limited. There is an interior concave cavity 200 on the protective cover body 20, in this embodiment, the cross sectional shape of interior concave cavity 200 is trapezoidal, and this interior concave cavity 200 cooperates with the motor shaft when being convenient for assemble, and trapezoidal cross sectional structure has also played the effect of reinforcing protective cover 2 self intensity simultaneously. The periphery of the inner cavity 200 is a ring of annular baffles 201, and the annular baffles 201 and the protection folded plates 21 are integrally and fixedly connected. The fixing lug plate 22 is a flat annular plate-shaped structure and is used for being assembled with the mounting groove 10 on the end cover 1.
Example 2
The utility model provides a motor bearing protector, as shown in fig. 2-3 for protect the motor bearing of outer rotor fan, includes protective cover 2 in embodiment 1, still includes end cover 1, mounting hole 100 has been seted up on end cover 1, motor shaft 3 installs in mounting hole 100, protective cover 2 installs motor shaft 3's end, protective cover 2 with sealed fixed connection between the end cover 1. Motor bearing 4 is equipped with on motor shaft 3, protective cover 2 is located in 3 terminal mounting holes 100 of motor shaft, protective cover 2 and end cover mounting holes 100's pore wall interference fit make protective cover 2 can fix reliably in end cover mounting holes 100, will motor bearing 4 seals in airtight space, and is right motor bearing 4 protects. As shown in fig. 4, an annular boss 11 is disposed on the end cover 1 around the mounting hole 100, and the annular boss 11 blocks external substances from entering the mounting hole 100 to protect the motor bearing 4. Mounting groove 10 has been seted up to the one side that annular boss 11 kept away from mounting hole 100, mounting groove 10 is the ring channel, be used for with the shape phase-match of fixed otic placode 22.
During assembly, a proper amount of sealant is added into the mounting groove, an aluminum protective cover is mounted, at the moment, the protective folded plate 21 covers the annular boss 11, and the fixed lug plate 22 is fixed in the mounting groove 10. The sealant in the mounting groove 10 cannot flow to the motor bearing 4, so that the motor bearing 4 is damaged. The traditional protection process is complex, and because the side surface of the dustproof cover is narrow, sealing glue is difficult to be sealed, the sealing effect is poor due to less sealing, and more sealing glue is easy to flow onto a motor bearing, so that the motor bearing is damaged; and the cost is high, and a large aluminum cover or a large plastic cover is required to be arranged on the end cover after the dustproof cover is arranged.
The utility model discloses a carry out ingenious design to the structure of protective cover and end cover, make protective cover 2 through sealed glue with one-time installation just can reach sealed fixed purpose between the end cover, reach and carry out good protecting effect to motor bearing 4, the bearing protection of the external rotor for the fan motor that specially adapted used under the environment such as outdoor open air.
The above-mentioned embodiments are only used for explaining the present invention, and not for limiting the present invention, and any changes and substitutions made by the present invention without creative efforts fall into the protection scope of the present invention.