Waterproof end cover assembly of vertical motor

Abstract

The waterproof end cover assembly comprises an upper end cover and a water sealing sleeve, a plugging table and a rotating shaft are arranged in the middle of the upper end cover, a plurality of asymmetrically distributed water outlets are formed in the outer edge of the circle of the upper end cover, an annular groove is formed between the plugging table and the upper end cover, and the annular groove sequentially comprises a water accumulation prevention step and a water drainage slope surface from inside to outside. The water seal structure is reasonable in design and simple in principle, has the characteristics of efficient drainage, multiple sealing and high structural strength, and can effectively reduce residual accumulated water and enhance the waterproof performance, thereby improving the use performance of the motor and prolonging the service life of the motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a waterproof end cap assembly for a vertical motor. Background Technology

[0002] In the field of motor technology, the waterproof performance of motors has always been a key factor affecting their service life, stability, and safety. Vertical motors, in particular, are more susceptible to water damage due to their unique installation and operating environment.

[0003] Traditional vertical motor end cover assemblies have several shortcomings in their waterproof design. Firstly, the drainage structure is poorly designed. Most end covers only have simple drainage holes, which are haphazardly distributed and fail to form an effective drainage system. When water accumulates on the motor surface, it cannot drain quickly and smoothly, easily leaving water stains on the end cover surface. Over time, this water may seep into the motor, corroding critical components such as the windings and core, thus affecting the motor's performance and lifespan.

[0004] On the other hand, the water seal structure has poor sealing performance. The fit between the common water seal sleeve and the shaft is not tight enough, or the water seal sleeve is prone to wear and tear during long-term use, leading to a decrease in sealing performance. Furthermore, the connection between the water seal sleeve and the end cover lacks effective sealing measures, allowing water to enter the motor along the gaps and threatening its normal operation.

[0005] Meanwhile, the structural strength of the end caps is also crucial. While ensuring waterproofing, the end caps must also possess sufficient strength to withstand the various forces exerted during motor operation. However, some existing end caps, in pursuit of waterproofing, have excessively increased thickness or adopted complex structures. This not only increases production costs but may also result in excessive weight, affecting the overall performance of the motor. Conversely, some end caps with simple structures, while lightweight and inexpensive, often fail to meet strength requirements, making them prone to deformation and damage during use.

[0006] Furthermore, with the continuous expansion of motor application scenarios, such as in humid industrial environments and outdoor open-air locations, the requirements for motor waterproofing performance are becoming increasingly stringent. Existing end cap assemblies are no longer sufficient to meet these growing demands, and there is an urgent need to develop a new type of end cap assembly that can effectively improve waterproofing, enhance drainage, and ensure structural strength. Summary of the Invention

[0007] In response to the problems mentioned in the background art, this utility model provides a waterproof end cap assembly for a vertical motor.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A waterproof end cap assembly for a vertical motor includes an upper end cap for the motor and a water seal sleeve that cooperates with the upper end cap. The upper end cap is circular, with a blocking platform protruding outward from the upper surface of the upper end cap in the middle, and a rotating shaft is provided. The characteristic feature is that the outer edge of the circular shape of the upper end cap is provided with a plurality of asymmetrically distributed drainage outlets.

[0010] The outer edge of the circular structure formed by the blocking platform and the upper cover is an annular groove. From the inside out, the annular groove consists of a water-proof step and a drainage slope. The water-proof step is annular and coaxially arranged with the blocking platform. The drainage slope is annular, with one end at a high position and the other end at a low position, forming a downward slope. The drain outlet is connected to the drainage slope through the drainage ditch and transitions smoothly. The drainage ditch is also downwardly arranged.

[0011] The water seal sleeve is interference-sealed with the rotating shaft, including a connected water seal outer sleeve and a water seal inner sleeve. The upper inner wall of the plug platform is provided with a positioning step. The water seal outer sleeve is fitted outside the plug platform and is clearance-fitted with the outer surface of the plug platform. The water seal inner sleeve is embedded in the positioning step and is clearance-fitted with the positioning step.

[0012] Furthermore, the junction between the anti-water accumulation step and the blocking platform has an arc-shaped transition;

[0013] Furthermore, the upper surface of the anti-water accumulation step is at a higher horizontal height than the highest horizontal height of the downward slope formed by the drainage slope.

[0014] Furthermore, at least one sealing groove is provided on the outer surface of the plug and the water seal jacket that fits together with the gap, and a sealing ring is correspondingly provided in the sealing groove and coated with grease;

[0015] Furthermore, the upper end cover has multiple evenly distributed mounting positioning grooves and mounting holes around its perimeter;

[0016] Furthermore, a bearing groove is provided in the center of the bottom surface of the upper end cover, and multiple reinforcing ribs are provided around the bearing groove for reinforcement.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This utility model proposes a vertical waterproof end cover assembly for a motor, including an upper end cover and a water seal sleeve. The upper end cover has a blocking platform and a rotating shaft in the middle, and its circular outer edge has multiple asymmetrically distributed drainage outlets. There is an annular groove between the blocking platform and the upper end cover. The annular groove consists of a water-proof step and a drainage slope from the inside to the outside. The water seal sleeve is interference-sealed with the rotating shaft and includes a connected water seal outer sleeve and a water seal inner sleeve. This utility model has a reasonable design and simple principle, and features efficient drainage, multiple sealing, and high structural strength. It can effectively reduce water residue and enhance waterproof performance, thereby improving the performance and lifespan of the motor. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention.

[0020] Figure 2 This is a top view of the present invention.

[0021] Figure 3 This is a bottom view of the present invention.

[0022] Figure 4 This is a schematic diagram of the bottom of this utility model.

[0023] The attached diagram is labeled as follows: 1. Top cover; 2. Water seal sleeve; 3. Plug; 4. Rotating shaft; 5. Drain outlet; 6. Anti-water accumulation step; 7. Drainage slope; 8. Drainage ditch; 9. Water seal outer sleeve; 10. Water seal inner sleeve; 11. Positioning step; 12. Sealing groove; 13. Installation positioning groove; 14. Mounting hole; 15. Bearing groove; 16. Reinforcing rib. Detailed Implementation

[0024] 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.

[0025] As shown in the figure, this embodiment proposes a waterproof end cover assembly for a vertical motor, including an upper end cover 1 for the motor and a water seal sleeve 2 that cooperates with the upper end cover 1. The upper end cover 1 is circular, with a blocking platform 3 protruding from the upper surface of the upper end cover 1 in the middle, and a rotating shaft 4 is provided. The characteristic is that the outer edge of the circular shape of the upper end cover 1 is provided with multiple drain ports 5. In this embodiment, the number of drain ports 5 is three. In order to facilitate the installation of the motor (especially the vertical motor), the periphery of the upper end cover 1 is provided with multiple evenly distributed mounting positioning grooves 13 and mounting holes 14. Based on this, in order to ensure the strength of the upper end cover 1 itself, and at the same time, to keep the drain ports 5 as far away from the motor controller installation position as possible, the drain ports 5 in this embodiment adopt an asymmetrical distribution design. Taking the central drain port 5 as a reference and the center of the circle of the upper end cover 1 as the center, the included angles between the central drain port 5 and the drain ports 5 on both sides are α and β, where α is 80°~100° and β is 60°~75°.

[0026] Furthermore, in this embodiment, an annular groove is provided between the outer edge of the circular shape formed by the blocking platform 3 and the upper cover 1. The annular groove consists of a water-proof step 6 and a drainage slope 7 from the inside out. The water-proof step 6 is annular and coaxially arranged with the blocking platform 3. The drainage slope 7 is annular, with one end at a high position and the other end at a low position, forming a downward slope with an angle γ with the horizontal direction, where γ is 3° to 5°. The drain outlet 5 is connected to the drainage slope 7 through the drainage ditch 8 and transitions smoothly. The drainage ditch 8 is arranged downward. The advantage of this design is that it can effectively guide the water falling on the upper cover 1 towards the drain outlet 5, improving the drainage effect. At the same time, the upper surface of the water-proof step 6 is higher than the highest horizontal height of the downward slope formed by the drainage slope 7, which can effectively prevent water from accumulating on the top of the motor.

[0027] Meanwhile, in this embodiment, the water seal sleeve 2 is press-fitted with the rotating shaft 4 to prevent water from seeping into the motor along the rotating shaft 4. The water seal sleeve 2 includes a connected water seal outer sleeve 9 and a water seal inner sleeve 10. The upper inner wall of the plug platform 3 is provided with a positioning step 11. The water seal outer sleeve 9 is fitted over the plug platform 3 and is clearance-fitted with the outer surface of the plug platform 3. At least one sealing groove 12 is provided on the outer surface of the plug platform 3 and the water seal outer sleeve 9 that is clearance-fitted. A sealing ring is correspondingly provided in the sealing groove 12 and is coated with grease, which can effectively improve the sealing and waterproofing effect and reduce the friction between the water seal outer sleeve 9 and the sealing ring. While ensuring the waterproofing effect, it can also improve the service life. In addition, the water seal inner sleeve 10 is embedded in the positioning step 11 and is clearance-fitted with the positioning step 11, which has a positioning effect and effectively prevents and reduces excessive wear and damage to the water seal sleeve 2 caused by deviation of the rotation axis.

[0028] In this embodiment, the junction of the anti-water accumulation step 6 and the blocking platform 3 is arc-shaped, which increases the structural strength of the upper cover 1 while also having a certain water-draining effect. According to the technical features of the drainage slope 7, when the bottom surface of the upper cover 1 is horizontal, the slope design of the drainage slope 7 will result in a difference in thickness at both ends of the upper cover 1. Based on this, a bearing groove 15 is provided in the middle of the bottom surface of the upper cover 1, and multiple reinforcing ribs 16 are provided around the bearing groove 15 for reinforcement to improve the structural strength of the upper cover 1.

[0029] 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.

[0030] 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.

[0031] 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 waterproof end cover assembly for vertical motor, comprising an upper end cover (1) for the motor and a water seal cover (2) matched with the upper end cover (1), the upper end cover (1) is circular, a bulge (3) is arranged in the middle of the upper end cover (1) and protrudes outward from the upper end surface of the upper end cover (1), and a rotating shaft (4) is arranged, characterized in that, The circular outer edge of the upper end cover (1) is provided with a plurality of asymmetrically distributed drainage openings (5); The annular groove between the blocking table (3) and the circular outer edge of the upper end cover (1) is sequentially provided with a water accumulation prevention step (6) and a drainage slope (7) from inside to outside, the water accumulation prevention step (6) is annular and coaxially arranged with the blocking table (3), the drainage slope (7) is annular, one end of which is at a high position and the other end is at a low position, and the whole is a downward inclined slope, the drainage opening (5) is connected with the drainage slope (7) through a drainage ditch (8) and smoothly transitions, and the drainage ditch (8) is arranged in a downward inclined manner. The water seal sleeve (2) is in interference sealing fit with the rotating shaft (4), including a water seal outer sleeve (9) and a water seal inner sleeve (10) connected together, the upper end inner wall of the blocking table (3) is provided with a positioning step (11), the water seal outer sleeve (9) is sleeved outside the blocking table (3) and is in gap fit with the outer surface of the blocking table (3), and the water seal inner sleeve (10) is embedded in the positioning step (11) and is in gap fit with the positioning step (11).

2. A vertical motor water-resistant end cover assembly according to claim 1, wherein The junction of the water accumulation prevention step (6) and the blocking table (3) is arc-shaped.

3. A water-resistant end cover assembly for a vertical motor as defined in claim 1, wherein The upper end surface of the water accumulation prevention step (6) is higher than the highest level of the downward inclined slope of the drainage slope (7).

4. A water-resistant end cover assembly for a vertical motor as defined in claim 3, wherein The outer surface of the blocking table (3) in gap fit with the water seal outer sleeve (9) is provided with at least one sealing groove (12), a sealing ring is arranged in the sealing groove (12) and butter is applied.

5. A water-resistant end cover assembly for a vertical motor as defined in claim 3, wherein A plurality of uniformly distributed mounting positioning grooves (13) and mounting holes (14) are formed in the periphery of the upper end cover (1).

6. A water-resistant end cover assembly for a vertical motor as defined in claim 3, wherein A bearing groove (15) is arranged in the middle of the bottom surface of the upper end cover (1), and a plurality of reinforcing ribs (16) for reinforcement are arranged around the bearing groove (15).

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