Protective end cover and external rotor motor using same

Abstract

The utility model discloses a protective end cover and an external rotor motor applying the same, the protective end cover comprises a rotating shaft, a stator assembly, an external rotor assembly, a rubber dustproof cover and a base, the base comprises a bottom plate and a sleeve protruding upwards from the middle of the top surface of the bottom plate, the middle of the sleeve is provided with a through hole penetrating along the axis of the sleeve, and the stator assembly is nested outside the sleeve. The rotor shell is arranged outside the stator assembly in a sleeving mode, an annular boss axially extends out of the bottom face of the bottom plate and is located on the periphery of an outlet in the bottom of the through hole, the rubber dustproof cover is embedded in the annular boss and blocks the outlet of the through hole, and the protection end cover is installed on the bottom face of the bottom plate and is arranged on the annular boss in a sleeving mode. The rubber dustproof cover is sealed, the protective end cover has certain impact resistance, and a layer of protection is added for the rubber dustproof cover in the environment with certain impact such as rainwater or a fountain, so that water is prevented from entering the motor.

Description

Technical Field

[0001] The utility model relates to a protective end cover and an outer rotor motor using the same. Background Art

[0002] The existing outer rotor motor includes a rotating shaft, a stator assembly, an outer rotor assembly, a rubber dust cover, and a base. The base includes a bottom plate and a sleeve protruding upward from the middle of the top surface of the bottom plate. A through hole is provided in the middle of the sleeve along the axis of the sleeve. Bearing chambers are provided at both ends of the sleeve, and bearings are installed in the bearing chambers. The rotating shaft is located inside the sleeve and supported on the bearings at both ends. The outer rotor assembly includes a rotor housing. One end of the rotating shaft extends from the sleeve and is installed and connected to the rotor housing. The stator assembly is nested and installed outside the sleeve. The rotor housing is sleeved outside the stator assembly. An annular boss extends axially from the bottom surface of the bottom plate. The annular boss is located outside the outlet of the through hole. The rubber dust cover is embedded in the annular boss and blocks the outlet of the through hole. The existing protective structure only provides protection through the rubber dust cover alone, resulting in the risk of water ingress in impactful environments such as rain. Therefore, additional protection is now provided to the rubber dust cover. Summary of the Invention

[0003] The purpose of the utility model is to provide a protective end cover and an outer rotor motor thereof, wherein the protective end cover has a certain impact resistance and adds a layer of protection to the rubber dust cover in an environment with a certain impact, such as rain or fountains, to prevent water from entering the interior of the motor.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] The utility model provides a protective end cover, which is characterized by comprising an end plate, wherein one end surface of the end plate is provided with a sinking groove for preventing interference.

[0006] A plurality of air-avoiding holes are provided on the edge of the end plate.

[0007] The edge of the end plate is provided with a notch.

[0008] The protective end cover mentioned above is manufactured in one piece.

[0009] The outer rotor assembly comprises a rotating shaft, a stator assembly, an outer rotor assembly, a rubber dust cover, a base and a protective end cover, the base comprising a bottom plate and a sleeve protruding upward from the middle of the top surface of the bottom plate, a through hole is provided in the middle of the sleeve and passes through the sleeve axis, bearing chambers are provided at both ends of the sleeve, bearings are installed in the bearing chambers, the rotating shaft is located inside the sleeve and supported on the bearings at both ends, the outer rotor assembly comprises a rotor housing, one end of the rotating shaft extends from the sleeve and is installed and connected to the rotor housing, the stator assembly is nested and installed on the outside of the sleeve, the rotor housing is sleeved on the outside of the stator assembly, an annular boss extends axially on the bottom surface of the bottom plate, the annular boss is located on the periphery of the outlet at the bottom of the through hole, the rubber dust cover is embedded in the annular boss and blocks the outlet of the through hole, the protective end cover is installed on the bottom surface of the bottom plate, and is characterized in that: the protective end cover is the protective end cover described above, the protective end cover is sleeved on the annular boss, and the rubber dust cover is sealed.

[0010] The bottom surface of the above-mentioned bottom plate is provided with a plurality of screw holes, and the edge of the end plate is provided with a plurality of air-avoiding holes, which correspond to the screw holes.

[0011] The bottom surface of the base plate is provided with a lead-in hole, a wire protection sleeve is installed on the lead-in hole, and a notch is provided on the edge of the end plate, which corresponds to the wire protection sleeve structure.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The cam is secured to the bottom of the motor and is secured to a location where the cam is secured to the bearings, the cam being secured to the bottom of the motor and having a secure connection therewith.

[0014] 2. Other advantages of the present invention are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An elevation view provided for the present utility model;

[0016] Figure 2A schematic diagram of the structure provided by the utility model;

[0017] Figure 3 This is a cross-sectional view provided by the present invention. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1:

[0020] like Figure 1 and Figure 2 As shown, this embodiment provides a protective end cover, which is characterized by comprising an end plate 11, one end surface of the end plate 11 being provided with a sink 12 to prevent interference. The protective end cover has a certain impact resistance, and in an environment with a certain impact such as rain or fountains, it adds a layer of protection to the rubber dust cover to prevent water from entering the interior of the motor.

[0021] A plurality of air-avoiding holes 13 are provided on the edge of the end plate 11 , and the structure is reasonably arranged and easy to install.

[0022] A notch 14 is provided on the edge of the end plate 11 , and the structure is reasonably arranged to prevent interference during installation.

[0023] The protective end cover 1 is integrally formed, simple to manufacture, and convenient to produce and store.

[0024] Example 2:

[0025] like Figure 2 and Figure 3As shown, an outer rotor motor includes a rotating shaft 4, a stator assembly 5, an outer rotor assembly, a rubber dust cover 2, a base 3 and a protective end cover 1. The base 3 includes a bottom plate 31 and a sleeve 310 protruding upward from the middle of the top surface of the bottom plate 31. A through hole 30 is provided in the middle of the sleeve 310 and passes through the sleeve axis. Bearing chambers 7 are opened at both ends of the sleeve 310. Bearings 71 are installed in the bearing chambers 7. The rotating shaft 4 is located in the sleeve 310 and supported on the bearings 71 at both ends. The outer rotor assembly includes a rotor housing 6. One end of the rotating shaft 4 extends from the sleeve 310 and is connected to the rotor outer housing. The shells 6 are installed and connected together, the stator assembly 5 is nested and installed on the outside of the sleeve 310, and the rotor housing 6 is sleeved on the outside of the stator assembly 5. An annular boss 32 extends axially from the bottom surface of the base plate 31, and the annular boss 32 is located on the periphery of the outlet at the bottom of the through hole 30. The rubber dust cover 2 is embedded in the annular boss 32 and blocks the outlet of the through hole 30. The protective end cover 1 is installed on the bottom surface of the base plate 31, and is characterized in that: the protective end cover 1 is the protective end cover described in Example 1, the protective end cover 1 is sleeved on the annular boss 32, and the rubber dust cover 2 is sealed.

[0026] The bottom surface of the bottom plate 31 is provided with a plurality of screw holes 311 , and the edge of the end plate 11 is provided with a plurality of avoidance holes 13 , which correspond to the screw holes 311 . The structure is reasonably arranged and easy to install.

[0027] A wire hole 312 is provided on the bottom surface of the bottom plate 31, and a wire protection sleeve is installed on the wire hole 312. A notch 14 is provided on the edge of the end plate 11, and the notch 14 corresponds to the wire protection sleeve structure. The structure is reasonably arranged, easy to install, and prevents interference.

[0028] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A protective end cap, characterized in that: The invention comprises an end plate (11), one end surface of which is provided with a sink groove (12) for preventing interference.

2. A protective end cap according to claim 1, characterized in that: A plurality of air-avoiding holes (13) are provided on the edge of the end plate (11).

3. The protective end cover according to claim 1, characterized in that: A notch (14) is provided on the edge of the end plate (11).

4. A protective end cap according to claim 1, 2 or 3, characterized in that: The protective end cover (1) is manufactured in one piece.

5. An outer rotor motor, comprising a rotating shaft (4), a stator assembly (5), an outer rotor assembly, a rubber dust cover (2), a base (3) and a protective end cover (1), wherein the base (3) comprises a bottom plate (31) and a sleeve (310) protruding upward from the middle of the top surface of the bottom plate (31), a through hole (30) penetrating along the axis of the sleeve is provided in the middle of the sleeve (310), bearing chambers (7) are provided at both ends of the sleeve (310), bearings (71) are installed in the bearing chambers (7), the rotating shaft (4) is located in the sleeve (310) and supported on the bearings (71) at both ends, and the outer rotor assembly comprises The rotor housing (6) and one end of the rotating shaft (4) extend from the sleeve (310) and are connected to the rotor housing (6). The stator assembly (5) is nested and installed outside the sleeve (310). The rotor housing (6) is sleeved outside the stator assembly (5). An annular boss (32) extends axially from the bottom surface of the bottom plate (31). The annular boss (32) is located outside the outlet of the bottom of the through hole (30). The rubber dust cover (2) is embedded in the annular boss (32) and blocks the outlet of the through hole (30). The protective end cover (1) is installed on the bottom surface of the bottom plate (31). It is characterized by: The protective end cover (1) is the protective end cover according to any one of claims 1 to 4. The protective end cover (1) is mounted on the annular boss (32) and seals the rubber dust cover (2).

6. The outer rotor motor according to claim 5, characterized in that: The bottom surface of the bottom plate (31) is provided with a plurality of screw holes (311), and the edge of the end plate (11) is provided with a plurality of air-avoiding holes (13), which correspond to the screw holes (311).

7. The outer rotor motor according to claim 6, characterized in that: A wire lead hole (312) is provided on the bottom surface of the bottom plate (31), a wire protection sleeve is installed on the wire lead hole (312), and a notch (14) is provided on the edge of the end plate (11), and the notch (14) corresponds to the wire protection sleeve structure.

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