A motor end cover structure and an outer rotor motor using the same

Abstract

The utility model discloses a motor end cover structure and its application's outer rotor motor, bottom plate and from the sleeve of bottom plate middle periphery convex, the sleeve middle forms the through -hole, and the sleeve sets up bearing seat, and the bearing is installed in bearing seat inside, and the outline of bottom plate is polygonal, and every side of polygon corresponds a side plane, wherein at least two groups of opposite side planes are arranged with a group of screw hole and taper hole respectively, and the new design end cover can be installed side lock screw installation through the screw hole group of arrangement in the side plane with load, reduces the axial occupation area and height, and the installation is convenient, and the taper hole can be used with the tool or the mechanical hand and carries out the clamping and takes out the motor.

Description

Technical Field

[0001] This utility model relates to an external rotor motor with an end cover structure for a motor and its application. Background Technology

[0002] Our standard AC180 series external rotor motor typically includes an external rotor assembly, a shaft, a stator assembly, bearings, and a base. The base consists of a base plate and a sleeve that protrudes axially from the center of the base plate. A through hole is formed in the center of the sleeve, and a bearing housing is installed inside the sleeve. The shaft extends into the through hole and is supported and mounted on the bearing. The top of the shaft is connected to the external rotor assembly. The stator assembly is mounted on the outside of the sleeve, and the rotor assembly is fitted over the stator assembly. The base plate is circular, and the screw holes are on the vertical plane, which results in the external rotor motor being installed perpendicularly to the load, occupying a large space and making installation inconvenient. Summary of the Invention

[0003] The purpose of this utility model is to provide an external rotor motor with an end cover structure and its application, which solves the technical problem in the prior art where the base plate is circular and the screw holes are installed on the vertical plane, resulting in the external rotor motor being installed vertically with the load, occupying a large space, and being inconvenient to install.

[0004] The technical solution of this utility model is implemented as follows:

[0005] This utility model provides a motor end cover structure, characterized in that: a base plate and a sleeve that protrudes circumferentially from the middle of the base plate, a through hole is formed in the middle of the sleeve, a bearing seat is provided inside the sleeve, a bearing is installed inside the bearing seat, the base plate is polygonal in shape, and each side of the polygon corresponds to a side plane; wherein at least two sets of opposite side planes are respectively provided with a set of screw holes and a tapered hole.

[0006] A set of screw holes and tapered holes are arranged on two adjacent side planes.

[0007] The bottom surface of the aforementioned base plate is provided with several heat dissipation ribs.

[0008] The bottom surface of the aforementioned base plate has a protruding cable sleeve portion; two capacitor box mounting posts protrude from the bottom surface of the base plate.

[0009] The bearing housing, located away from the base plate, is fitted with a steel sleeve, and the bearing is installed in the steel sleeve.

[0010] The top surface of the aforementioned base plate is provided with a plurality of spaced first annular protrusions, and a first annular groove is formed between adjacent first annular protrusions.

[0011] The base plate described above has an octagonal shape, and a set of screw holes refers to three screw holes spaced apart.

[0012] An external rotor motor includes an external rotor assembly, a rotating shaft, a stator assembly, and an end cover. The end cover is of the motor end cover structure described above. The rotating shaft extends into a through hole and is supported and mounted on a bearing. The top end of the rotating shaft is connected to the external rotor assembly. A stator assembly is mounted on the outside of a sleeve. A rotor assembly is fitted over the stator assembly. The end face of the external rotor assembly has several second annular protrusions, and adjacent second annular protrusions form second annular grooves. A waterproof structure is formed by the convex-concave fit between the end face of the external rotor assembly and the top surface of the base plate.

[0013] The above-mentioned components also include capacitor boxes. Two capacitor box mounting posts protrude from the bottom surface of the base plate. The capacitor boxes are mounted on the capacitor box mounting posts with screws. The top of the capacitor box is provided with a wire passage hole. The wire protection sleeve on the bottom surface of the base plate is connected to the wire passage hole.

[0014] The edge of the aforementioned wire hole has a protruding water-blocking ring, and the top of the capacitor box is provided with a drainage hole.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. A motor end cover structure, comprising a base plate and a sleeve circumferentially protruding from the middle of the base plate, a through hole formed in the middle of the sleeve, a bearing seat set in the sleeve, and a bearing installed inside the bearing seat. The base plate is polygonal in shape, and each side of the polygon corresponds to a side plane. Screw hole groups and tapered holes are arranged on each pair of adjacent side planes. The newly designed end cover can be installed with the load by side-locking screws through the screw hole groups arranged on the side planes, which reduces the axial occupied area and height, making installation convenient. In addition, the addition of tapered holes allows the motor to be clamped and removed using tools or robotic arms.

[0017] 2. Other advantages of this utility model are described in detail in the embodiment section of the specification. Attached Figure Description

[0018] Figure 1 A perspective view provided for Embodiment 1 of this utility model;

[0019] Figure 2 This is another perspective view of Embodiment 1 of the present utility model;

[0020] Figure 3 A perspective view provided for Embodiment 2 of this utility model;

[0021] Figure 4 This is a partial exploded view provided for Embodiment 2 of the present invention;

[0022] Figure 5 This is a schematic diagram of the capacitor box structure provided in Embodiment 2 of this utility model;

[0023] Figure 6This is a front view of Embodiment 2 of the present invention;

[0024] Figure 7 for Figure 6 Sectional view of AA. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Example 1:

[0027] like Figure 1 , Figure 2 and Figure 7 As shown, this embodiment provides a motor end cover structure, characterized by: a base plate 11 and a sleeve 12 circumferentially protruding from the middle of the base plate 11, a through hole 13 formed in the middle of the sleeve 12, a bearing seat 14 disposed inside the sleeve 12, and a bearing 100 installed inside the bearing seat 14. The base plate 11 has a polygonal shape, and each side of the polygon corresponds to a side plane 110. The base plate 11 has an octagonal shape. At least two sets of opposite side planes 110 are respectively provided with a set of screw holes 111 and a tapered hole 112. The newly designed end cover can be installed with the load by side screw locking through the screw hole group arranged on the side plane, which reduces the axial occupied area and height, making installation convenient. In addition, the tapered hole allows the motor to be clamped and removed using tools or a robot.

[0028] A set of screw holes 111 and tapered holes 112 are respectively arranged on two adjacent side planes 110. The structure is reasonably arranged so that a set of screw holes 111 and tapered holes 112 are evenly distributed on the side planes 110 of the base plate 11.

[0029] The bottom surface of the aforementioned base plate 11 is provided with several heat dissipation fins 113 to improve the heat dissipation effect.

[0030] The bottom surface of the base plate 11 has a protruding cable sleeve portion 114; the bottom surface of the base plate 11 has two protruding capacitor box mounting posts 117, which facilitates installation with capacitor boxes and has a reasonable structural layout.

[0031] A steel sleeve 15 is embedded in the bearing housing 14 located away from the base plate 11. The bearing 100 is installed in the steel sleeve 15 to prevent the bearing housing from deforming due to friction between the bearing and the bearing housing during motor operation, which could lead to a decrease in motor performance and the possibility of failure.

[0032] The top surface of the aforementioned base plate 11 is provided with a number of spaced first annular protrusions 115, and a first annular groove 116 is formed between adjacent first annular protrusions 115, which is a reasonable structural arrangement.

[0033] The base plate 11 is octagonal in shape, and a set of screw holes 111 refers to three screw holes spaced apart.

[0034] Example 2:

[0035] like Figures 3 to 7 As shown, an external rotor motor includes an external rotor assembly 2, a rotating shaft 3, a stator assembly 4, and an end cover 5. The end cover 5 is the motor end cover structure described in Embodiment 1 above. The rotating shaft 3 extends into the through hole 13 and is supported and mounted on the bearing 100. The top end of the rotating shaft 3 is connected to the external rotor assembly 2. The stator assembly 4 is installed on the outside of the sleeve 12, and the rotor assembly 2 is fitted over the stator assembly 4. Several second annular protrusions 21 are provided on the end face of the external rotor assembly 2, and a second annular groove 22 is formed between adjacent second annular protrusions 21. The concave-convex fit between the end face of the external rotor assembly 2 and the top surface of the base plate 11 forms a waterproof structure, improving waterproof and dustproof performance.

[0036] The above also includes a capacitor box 6. Two capacitor box mounting posts 117 protrude from the bottom surface of the base plate 11. The capacitor box 6 is mounted on the capacitor box mounting posts 117 with screws. The top of the capacitor box 6 is provided with a wire passage hole 61. The wire protection sleeve part 114 on the bottom surface of the base plate 11 is connected to the wire passage hole 61.

[0037] The edge of the aforementioned wire hole 61 has a protruding water-blocking ring 62, and the top of the capacitor box 6 is provided with a drain hole 63, which can prevent a small amount of water inside the capacitor box from flowing directly into the motor in outdoor environments. The drain hole can drain a small amount of water to the outside of the capacitor box, and the structure is reasonably arranged.

[0038] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model are equivalent substitutions and are included within the protection scope of the present utility model.

Claims

1. A motor end cover structure, characterized in that: The base plate (11) and the sleeve (12) protruding circumferentially from the middle of the base plate (11) form a through hole (13) in the middle of the sleeve (12). A bearing seat (14) is provided inside the sleeve (12), and a bearing (100) is installed inside the bearing seat (14). The base plate (11) has a polygonal shape, and each side of the polygon corresponds to a side plane (110). At least two sets of opposite side planes (110) are respectively provided with a set of screw holes (111) and tapered holes (112).

2. The motor end cover structure according to claim 1, characterized in that: A set of screw holes (111) and tapered holes (112) are arranged on two adjacent side planes (110).

3. The motor end cover structure according to claim 2, characterized in that: Several heat dissipation ribs (113) are provided on the bottom surface of the base plate (11).

4. The motor end cover structure according to claim 3, characterized in that: The bottom surface of the base plate (11) has a protruding wire sleeve part (114); the bottom surface of the base plate (11) has two capacitor box mounting posts (117).

5. The motor end cover structure according to claim 4, characterized in that: A steel sleeve (15) is embedded in the bearing housing (14) away from the base plate (11), and the bearing (100) is installed in the steel sleeve (15).

6. The motor end cover structure according to claim 5, characterized in that: The top surface of the base plate (11) is provided with a number of first annular protrusions (115) spaced apart, and a first annular groove (116) is formed between adjacent first annular protrusions (115).

7. A motor end cover structure according to claim 1, 2, 3, 4, 5, or 6, characterized in that: The base plate (11) is octagonal in shape, and a set of screw holes (111) refers to three screw holes that are spaced apart.

8. An external rotor motor, comprising an external rotor assembly (2), a rotating shaft (3), a stator assembly (4), and an end cover (5), characterized in that: The end cover (5) is the motor end cover structure according to any one of claims 1 to 7. The shaft (3) extends into the through hole (13) and is supported and installed on the bearing (100). The top end of the shaft (3) is connected to the outer rotor assembly (2). The stator assembly (4) is installed on the outside of the sleeve (12). The rotor assembly (2) is sleeved on the outside of the stator assembly (4). The end face of the outer rotor assembly (2) is provided with a plurality of second annular protrusions (21). A second annular groove (22) is formed between adjacent second annular protrusions (21). A waterproof structure is formed by the concave and convex fit between the end face of the outer rotor assembly (2) and the top surface of the base plate (11).

9. An external rotor motor according to claim 8, characterized in that: It also includes a capacitor box (6), and two capacitor box mounting posts (117) protrude from the bottom surface of the base plate (11). The capacitor box (6) is mounted on the capacitor box mounting posts (117) with screws. The top of the capacitor box (6) is provided with a wire hole (61). The wire sleeve part (114) on the bottom surface of the base plate (11) is connected to the wire hole (61).

10. An external rotor motor according to claim 9, characterized in that: The edge of the wire hole (61) has a water-blocking ring (62) protruding, and the top of the capacitor box (6) is provided with a drain hole (63).

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