Desk treasure hub driving motor protection structure system meeting IP54 requirement

Abstract

The utility model discloses a district wheel hub driving motor protection structure system meeting IP requirements, which comprises a casing, a support arm arranged on the top of the casing, an end cover arranged between the casing and the support arm and arranged on the lower portion of the support arm, an aluminum support fixedly arranged on the inner side of the end cover, and a rotating shaft arranged in the middle of the casing. The upper and lower ends of the rotating shaft are respectively sleeved with a front-end bearing and a rear-end bearing. The utility model has the beneficial effects that a first heavy labyrinth structure full of grease is formed between the oil storage tank of the aluminum bracket and the groove on the back surface of the end cover, and a second heavy labyrinth is formed between the annular upright post of the supporting arm and the annular upright post of the end cover, so that the grease in the first heavy labyrinth cannot be damaged by splashed water, and the dustproof and waterproof effects are further achieved.

Description

Technical Field

[0001] This utility model relates to the field of dustproof and waterproof technology for wheel hub motors, specifically a protective structure system for wheel hub drive motors that meets IP54 requirements. Background Technology

[0002] The original hub motor assembly structure has three points on the end cover side where dust and water may enter the motor. The middle position has a certain dustproof effect through the rear bearing, but it cannot be waterproofed. There is also a certain gap between the power cord outlet and the aluminum bracket, which has a certain dustproof effect, but it cannot be waterproofed. The end cover and the aluminum bracket are sealed by a rubber ring, which can prevent dust and water, but there is a certain frictional resistance, resulting in a significant efficiency loss for low-power motors. Utility Model Content

[0003] The purpose of this invention is to provide a protective structure system for the hub drive motor of the Dibao wheel that meets the IP54 requirement, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a protective structure system for a wheel hub drive motor of a Deebot that meets IP requirements, including a housing, a support arm at the top of the housing, an end cap located between the housing and the support arm at the lower part of the support arm, an aluminum bracket fixedly installed inside the end cap, a rotating shaft in the middle of the housing, and a front bearing and a rear bearing respectively fitted at the upper and lower ends of the rotating shaft.

[0005] In a further optimized configuration, the support arm and the upper and side ends of the end cap are respectively the first dust and water inlet and the second dust and water inlet.

[0006] In a further optimization, the support arm is provided with a contoured triangular prism on the side near the top of the housing, and a first annular column is provided on the outer side of the contoured triangular prism in a circumferential direction.

[0007] In a further optimized version, the aluminum bracket is a one-piece molded cylindrical aluminum casting with a bearing chamber in the middle and a cable outlet groove on one side of the bearing chamber.

[0008] In a further optimization, one end of the aluminum bracket is provided with a triangular prism, and at least three threaded holes are provided at equal intervals around the end face of the triangular prism.

[0009] In a further optimized design, an oil reservoir is formed by die casting between the triangular prism and the end face of the aluminum bracket.

[0010] In a further optimization, a second annular column is provided at one end of the end cap near the support arm.

[0011] In a further optimized version, the second dust and water inlet is filled with a first grease, and the first dust and water inlet is provided with a rubber stopper and UV adhesive.

[0012] In a further optimized version, the oil storage tank is filled with a second grease, and a first labyrinth structure filled with grease is formed between the oil storage tank and the annular groove on the back of the end cap.

[0013] In a further optimized design, a second maze is formed between the first annular column on the outer side of the contoured triangular prism and the second annular column on the end cap.

[0014] Beneficial effects

[0015] The protective structure system for the wheel hub drive motor of this utility model, which meets the IP54 requirement, forms a first labyrinth structure filled with grease between the oil reservoir of the aluminum bracket and the groove on the back of the end cap, providing dustproof and some waterproof effect at the first dust and water inlet. After installing a conformal rubber plug at the cable outlet of the aluminum bracket, UV glue is injected for fixation and sealing, providing dustproof and waterproof effect at both dust and water inlets. After the support arm is fixed to the aluminum bracket with front screws, the conformal triangular prism inside the support arm seals the bearing chamber inside the triangular prism of the aluminum bracket, preventing dust and water from entering the bearing chamber. At the same time, a second labyrinth is formed between the annular column of the support arm and the annular column of the end cap, preventing splashed water from damaging the grease in the first labyrinth, further providing dustproof and waterproof effect. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the support arm structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the aluminum support structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the end cap structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the assembly structure of the end cap and aluminum bracket of this utility model;

[0021] Figure 6 This is a schematic diagram of the complete assembled structure of this utility model. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] Example

[0024] like Figure 1-6 As shown, a protective structure system for a wheel hub drive motor of a Deebot that meets IP54 requirements includes a housing 1, a support arm 3 on the top of the housing 1, an end cover 2 located between the housing 1 and the support arm 3 at the bottom of the support arm 3, an aluminum bracket 4 fixedly installed inside the end cover 2, a rotating shaft 7 in the middle of the housing 1, and a front bearing 8 and a rear bearing 9 respectively mounted on the upper and lower ends of the rotating shaft 7.

[0025] In this embodiment, the upper end and side of the support arm 3 and the end cap 2 are respectively the first dust and water inlet 10 and the second dust and water inlet 11.

[0026] The support arm 3 is provided with a contoured triangular prism 15 on the side near the top of the housing 1, and a first annular column 16 is provided on the outer side of the contoured triangular prism 15 in a circumferential direction.

[0027] The aluminum bracket 4 is a one-piece molded cylindrical aluminum casting with a bearing chamber 21 in the middle and a cable outlet groove 20 on one side of the bearing chamber 21.

[0028] The aluminum bracket 4 is also provided with a triangular prism 18 at one end, and at least three threaded holes 17 are provided at equal intervals around the end face of the triangular prism 18.

[0029] An oil reservoir 19 is formed by die casting between the triangular prism 18 and the end face of the aluminum bracket 4.

[0030] The end cap 2 is provided with a second annular column 22 at one end near the support arm 3.

[0031] The second dust and water inlet 11 is filled with a first grease 13, and the first dust and water inlet 10 is provided with a rubber stopper 14 and a UV adhesive 12.

[0032] The oil reservoir 19 is filled with a second grease, and forms a first labyrinth structure filled with grease between it and the annular groove on the back of the end cap 2.

[0033] The first annular column 16 set on the outside of the contoured triangular prism 15 and the second annular column 22 of the end cap 2 form a second maze;

[0034] The aluminum bracket is made of cast aluminum. The triangular prism has three threaded holes evenly distributed at 120°, one annular oil reservoir, one cable outlet, and the hollow part is the bearing chamber.

[0035] The support arm is made of cast aluminum and has one contoured triangular prism, an internal contoured cable outlet groove and three 120° evenly distributed threaded holes, and one annular column 3.

[0036] The end cap has one annular post on the front and one annular groove on the back.

[0037] The oil reservoir of the aluminum bracket is filled with grease. After being assembled with the end cap, the oil reservoir of the aluminum bracket and the groove on the back of the end cap form a first labyrinth structure filled with grease, which provides a dustproof effect and a certain degree of waterproof effect at the first dust and water inlet.

[0038] After installing the conformal rubber plug at the outlet of the aluminum bracket, UV glue is injected to fix and seal it, which has the effect of preventing dust and water at the second dust and water inlet.

[0039] After the support arm and the aluminum bracket are fixed by the front screw, the inside of the conformal triangular column of the support arm seals the bearing chamber inside the triangular column of the aluminum bracket, avoiding the problem of dust and water entering the bearing chamber. At the same time, a second labyrinth is formed between the annular column of the support arm and the annular column of the end cap, so that splashed water cannot damage the grease in the first labyrinth, further achieving the effect of dustproof and waterproof.

[0040] The motor front housing has three screw holes. The rubber wheel is fixed by the front screws coated with anti-loose adhesive, which also seals the screw holes. This sealing system achieves the overall dustproof and waterproof effect of the hub motor, reaching the IP54 protection level. At the same time, grease replaces the O-ring, which reduces friction and loss for low-power motors and improves the efficiency of the motor at four points.

[0041] The support arm fits snugly against the end face of the aluminum bracket, which facilitates the conduction of heat inside the motor, increases the heat dissipation area, reduces the motor temperature rise by 10°C, and further improves the reliability of the motor.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A protective structure system for a wheel hub drive motor of a portable electric vehicle that meets IP54 requirements, characterized in that: Includes a housing (1), the top of the housing (1) is provided with a support arm (3), the lower part of the support arm (3) is provided with an end cap (2) located between the housing (1) and the support arm (3), an aluminum bracket (4) is fixedly provided inside the end cap (2), and a rotating shaft (7) is provided in the middle of the housing (1), with a front bearing (8) and a rear bearing (9) respectively fitted at the upper and lower ends of the rotating shaft (7).

2. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement as described in claim 1, characterized in that: The upper end and side of the support arm (3) and the end cap (2) are respectively the first dust and water inlet (10) and the second dust and water inlet (11).

3. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement as described in claim 1, characterized in that: The support arm (3) is provided with a contoured triangular prism (15) on one side near the top of the housing (1), and a first annular column (16) is provided on the outer side of the contoured triangular prism (15) in a circumferential direction.

4. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement as described in claim 1, characterized in that: The aluminum bracket (4) is an integrally formed cylindrical aluminum casting with a bearing chamber (21) in the middle and a wire outlet groove (20) on one side of the bearing chamber (21).

5. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement according to claim 4, characterized in that: The aluminum bracket (4) is also provided with a triangular prism (18) at one end, and at least three threaded holes (17) are provided at equal intervals around the end face of the triangular prism (18).

6. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement according to claim 5, characterized in that: An oil storage tank (19) is formed by die casting between the end face of the triangular prism (18) and the aluminum bracket (4).

7. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement as described in claim 1, characterized in that: The end cap (2) near the support arm (3) is provided with a second annular column (22), and its back is provided with an annular groove.

8. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement according to claim 2, characterized in that: The second dust and water inlet (11) is filled with a first grease (13), and the first dust and water inlet (10) is provided with a rubber stopper (14) and UV glue (12).

9. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement according to claim 6, characterized in that: The oil storage tank (19) is filled with a second grease, and forms a first labyrinth structure filled with grease between it and the annular groove on the back of the end cap (2).

10. The protective structure system for the wheel hub drive motor of the electric vehicle that meets the IP54 requirement according to claim 3, characterized in that: The first annular column (16) on the outside of the contoured triangular prism (15) forms a second maze with the second annular column (22) of the end cap (2).

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