Motor end cover assembly capable of symmetrically draining water
By designing a symmetrical drainage motor end cover assembly, utilizing drainage grooves and symmetrical drainage outlets, combined with anti-water accumulation steps and sealing grooves, the problem of poor drainage in existing motor end covers is solved, thereby improving the motor's waterproof performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-07
AI Technical Summary
The existing motor end cover has a simple drainage structure design and unreasonable drainage hole position, which leads to uncertainty in water flow direction and easy blockage, increasing the risk of water entering the motor and affecting the motor's waterproof performance and service life.
Design a symmetrical drainage motor end cover assembly, including an upper end cover and a water seal sleeve. A drainage groove is set between the raised plug and the outer edge of the annular end cover. Multiple symmetrical drainage outlets are provided in the drainage groove. Combined with anti-water accumulation steps and sloping drainage slope, the drainage effect is enhanced, and the sealing performance is improved by sealing groove and sealing ring.
It achieves efficient drainage, reduces water accumulation, improves the motor's waterproof performance, ensures the motor's normal and stable operation, and extends its service life.
Smart Images
Figure CN224097501U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a motor end cover assembly with symmetrical drainage. Background Technology
[0002] In practical applications of electric motors, waterproof performance is one of the key indicators for measuring their reliability and service life. Electric motors are widely used in many industrial and civil fields, such as outdoor machinery and electrical equipment in humid environments. In these environments, motors are easily exposed to water. If waterproofing measures are inadequate, water can enter the motor, causing serious problems such as short circuits and corrosion, leading to motor damage. This not only increases maintenance costs but also affects the normal operation of equipment, causing adverse consequences such as production stoppages.
[0003] Currently, most motor end covers on the market have many shortcomings in terms of drainage and waterproofing. Some motor end covers have simple drainage structure designs and unreasonable drainage hole positions. During motor operation, due to the uncertainty of water flow direction and the easy blockage of drainage holes by impurities, water cannot be discharged in a timely and effective manner. Water stagnates in the end cover for a long time, increasing the risk of water entering the motor. Summary of the Invention
[0004] In response to the problems mentioned in the background art, this utility model provides a motor end cover assembly with symmetrical drainage.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A symmetrical drainage motor end cover assembly includes an upper end cover mounted on a motor and a water seal sleeve that cooperates with the upper end cover. The upper end cover is circular, with a raised blocking platform in the middle and an annular outer edge of the end cover at its edge. A drainage groove is formed between the blocking platform and the outer edge of the end cover, and multiple symmetrically and evenly distributed drainage outlets are provided on the outer edge of the end cover.
[0007] The drainage ditch is ring-shaped, with anti-water accumulation steps and drainage slopes arranged sequentially from the inside out. The anti-water accumulation steps protrude upwards and out of the drainage slopes, which are sloped from the inside out. The plug is centrally connected, with the motor shaft extending from the center of the plug and fitting with it with a clearance. The water seal sleeve is fitted onto the plug, and its inner wall is press-fitted with the motor shaft.
[0008] Furthermore, the anti-water accumulation step is annular and coaxially arranged with the blocking platform;
[0009] Furthermore, the drain outlet is located on the outer edge of the annular end cap and is in the shape of an arc-shaped groove. The lower edge of the drain outlet is lower than the outer edge of the drainage slope and transitions smoothly.
[0010] Furthermore, the water seal sleeve includes a connected outer sleeve and an inner sleeve. The upper inner wall of the plug platform is provided with a limiting step. The outer sleeve is fitted over the plug platform and has a clearance fit with the outer surface of the plug platform. The inner sleeve is embedded in the limiting step and has a clearance fit with the limiting step.
[0011] Furthermore, the outer surface of the outer jacket is flared from top to bottom, making the water seal sleeve as a whole truncated cone shape;
[0012] Furthermore, at least one sealing groove is provided on the outer surface of the plug and the outer sleeve that fits together with the gap, and a sealing ring is correspondingly provided in the sealing groove and coated with grease;
[0013] Furthermore, the upper end cover has multiple evenly distributed assembly holes and mounting holes around its perimeter.
[0014] The technical effects and advantages of this utility model are as follows:
[0015] This utility model proposes a symmetrical drainage motor end cover assembly, relating to the field of motor technology. It includes an upper end cover and a water seal sleeve. The upper end cover has a raised blocking platform in the middle, and its edge has an outer edge. A drainage groove is formed between the blocking platform and the outer edge of the end cover. Multiple drainage outlets are provided on the outer edge of the end cover. This utility model has a simple structure and reasonable design, and features efficient drainage and water accumulation prevention. Moreover, the drainage outlets are not easily blocked, which can effectively improve the waterproof performance of the motor and ensure the normal and stable operation of the motor. It is practical. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of the present invention.
[0017] Figure 2 This is a top view of the present invention.
[0018] Figure 3 This is a side view of the present invention.
[0019] The attached diagram is labeled as follows: 1. Upper end cover; 2. Water seal sleeve; 3. Plug; 4. Outer edge of end cover; 5. Limiting step; 6. Drain outlet; 7. Anti-water accumulation step; 8. Drainage slope; 9. Motor shaft; 10. Outer sleeve; 11. Inner sleeve; 12. Sealing groove; 13. Assembly hole; 14. Mounting hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] As shown in the figure, this embodiment proposes a symmetrical drainage motor end cover assembly, including an upper end cover 1 installed on the motor and a water seal sleeve 2 that cooperates with the upper end cover 1. In this embodiment, the upper end cover 1 is circular, with a protruding plug 3 in the middle and an annular end cover outer edge 4 on its edge. A drainage groove is formed between the plug 3 and the end cover outer edge 4. Multiple symmetrically and evenly distributed drainage ports 6 are provided on the end cover outer edge 4 for effective drainage of the motor and to improve the waterproof effect.
[0022] Specifically, in this embodiment, the drainage ditch is annular, consisting of a water-proof step 7 and a drainage slope 8 from the inside out. The water-proof step 7 is annular and coaxially arranged with the blocking platform 3, protruding upwards and extending beyond the drainage slope 8. This effectively prevents water from spreading from the drainage ditch towards the blocking platform 3 during heavy rainfall. Furthermore, the drainage slope 8 is sloping from the inside out, with an angle of 1° to 3° with the horizontal direction. The blocking platform 3 is open, and the drainage outlet 6 is located on the outer edge 4 of the annular end cap for drainage. In this embodiment, there are two drainage outlets 6, symmetrically arranged. The drainage outlets 6 are arc-shaped grooves, which helps to better enlarge the size of the drainage outlets 6 and prevents clogging. The lower edge of the drainage outlet 6 is lower than the outer edge of the drainage slope 8 and has a smooth transition, which helps to quickly drain accumulated water and enhances the waterproof effect of the motor.
[0023] In this embodiment, the motor shaft 9 extends from the middle of the blocking platform 3 and is clearance-fitted with it. The water seal sleeve 2 is fitted onto the blocking platform 3, and its inner wall is interference-sealed with the motor shaft 9. Specifically, the water seal sleeve 2 includes an outer sleeve 10 and an inner sleeve 11 connected together. The upper inner wall of the blocking platform 3 is provided with a limiting step 5. The outer sleeve 10 is fitted onto the outside of the blocking platform 3 and is clearance-fitted with the outer surface of the blocking platform 3, which has a waterproof effect. The inner sleeve 11 is embedded in the limiting step 5 and is clearance-fitted with the limiting step 5, which has a limiting effect, ensuring that the water seal sleeve 2 is coaxial with the motor shaft 9 when it rotates, and preventing excessive wear of the water seal sleeve 2.
[0024] In addition, the outer surface of the outer sleeve 10 in this embodiment is flared from top to bottom, making the water seal sleeve 2 as a whole truncated cone shape, which helps to remove water from the water seal sleeve 2 and improves the waterproof effect of the motor.
[0025] Meanwhile, at least one sealing groove 12 is provided on the outer surface of the plug 3 and the outer sleeve 10 with clearance fit. A sealing ring is provided in the sealing groove 12 and grease is applied to it, which can effectively improve the sealing and waterproofing effect and reduce the friction between the water seal outer sleeve 9 and the sealing ring, ensuring the waterproofing effect while improving the service life. Multiple evenly distributed assembly holes 13 and mounting holes 14 are opened around the upper end cover 1. The assembly holes 13 are used for connection with the motor housing, while the mounting holes 14 are used for the fixed installation of the motor as a whole.
[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A symmetrical drainage motor end cover assembly, comprising an upper end cover (1) mounted on a motor and a water seal sleeve (2) cooperating with the upper end cover (1), characterized in that, The upper end cap (1) is circular, with a raised blocking platform (3) in the middle and an annular end cap outer edge (4) on its edge. The blocking platform (3) and the end cap outer edge (4) are a drainage groove, and multiple symmetrically and evenly distributed drainage outlets (6) are provided on the end cap outer edge (4). The drainage ditch is ring-shaped, consisting of a water-proof step (7) and a drainage slope (8) from the inside out. The water-proof step (7) protrudes upwards and out of the drainage slope (8). The drainage slope (8) is sloping from the inside out. The blocking platform (3) is open in the middle, and the motor shaft (9) extends out from the middle of the blocking platform (3) and is fitted with it with a clearance. The water seal sleeve (2) is fitted on the blocking platform (3), and its inner wall is press-fitted with the motor shaft (9).
2. The symmetrical drainage motor end cover assembly according to claim 1, characterized in that, The anti-water accumulation step (7) is ring-shaped and is coaxially arranged with the blocking platform (3).
3. The symmetrical drainage motor end cover assembly according to claim 1, characterized in that, The drain outlet (6) is located on the outer edge (4) of the annular end cap and is in the shape of an arc-shaped groove. The lower edge of the drain outlet (6) is lower than the outer edge of the drainage slope (8) and transitions smoothly.
4. A symmetrical drainage motor end cover assembly according to claim 3, characterized in that, The water seal sleeve (2) includes an outer sleeve (10) and an inner sleeve (11) connected together. The upper inner wall of the blocking platform (3) is provided with a limiting step (5). The outer sleeve (10) is fitted outside the blocking platform (3) and has a clearance fit with the outer surface of the blocking platform (3). The inner sleeve (11) is embedded in the limiting step (5) and has a clearance fit with the limiting step (5).
5. A symmetrical drainage motor end cover assembly according to claim 4, characterized in that, The outer surface of the outer jacket (10) is flared from top to bottom, making the water seal sleeve (2) as a whole truncated cone.
6. A symmetrical drainage motor end cover assembly according to claim 4, characterized in that, At least one sealing groove (12) is provided on the outer surface of the plug (3) and the outer sleeve (10) with a clearance fit. A sealing ring is provided in the sealing groove (12) and is coated with grease.
7. A symmetrical drainage motor end cover assembly according to claim 3, characterized in that, The upper end cover (1) has a plurality of evenly distributed assembly holes (13) and mounting holes (14) around its periphery.