A mud-water backflow prevention electric vehicle motor cylinder end cover structure

Abstract

The utility model relates to electric motor car technical field especially is a kind of motor car motor cylinder end cover structure of preventing silt water backwash, including a group of shell by several bolt group cooperation connection, motor is set between two the shell, the inside shaft body both ends of motor respectively penetrates the middle part of both sides the shell and extends to outside, the middle part of each the shell is provided with end cover structure, the utility model significantly improves the ability of preventing silt water backwash, the groove of outer sealing assembly can actively guide external silt water to enter buffer space, avoid silt water direct impact sealing surface;Buffer space can carry out pressure reduction, deposit to the silt water of entering, reduce the friction and abrasion of silt to sealing element;The oil seal cooperation connecting plate of inner sealing assembly forms close adhesion, constitutes final sealing barrier, effectively blocks residual water vapor and small silt penetration to motor inside, reduce the motor failure risk caused by silt water erosion from source, prolongs motor service life.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to an electric vehicle motor barrel end cover structure that prevents mud and water backflow. Background Technology

[0002] As the core drive component, the reliability of the electric vehicle motor directly affects the vehicle's lifespan and safety. The motor barrel end cap, a critical part of the motor housing, primarily functions to seal internal components and protect core parts such as the stator and rotor from external environmental corrosion. With the widespread use of electric bicycles, electric tricycles, and other vehicle types in complex road conditions, the sealing performance of the motor barrel end cap faces severe challenges, especially the problem of mud and water backflow, which has become one of the main factors affecting motor lifespan.

[0003] The existing connection structure between the motor end cover and the housing generally adopts bolt fixing or simple stepped surface mating. Its sealing design mostly relies on a single sealing ring or flat bonding method. However, the mud and sand particles contained in the mud-water mixture are easy to embed into the sealing surface, forming micro channels, which causes high-pressure mud and water to penetrate through the capillary effect. At the same time, traditional sealing rings are prone to aging and cracking under the friction of mud and sand, further reducing the sealing reliability.

[0004] Therefore, a new type of electric vehicle motor barrel end cap structure is needed to improve the above-mentioned problems and prevent mud and water backflow. Utility Model Content

[0005] The purpose of this utility model is to provide an electric vehicle motor barrel end cover structure that prevents mud and water backflow, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An electric vehicle motor barrel end cap structure for preventing mud and water backflow includes a set of outer shells connected by a number of bolt groups. A motor is disposed between two of the outer shells. The two ends of the motor's internal shaft extend through the middle of the two outer shells to the outside. An end cap structure is disposed in the middle of each outer shell. The end cap structure includes an inner sealing component and an outer sealing component. A buffer space is disposed between the inner sealing component and the outer sealing component. A number of grooves for connecting the outside and the buffer space are disposed on the outside of the outer sealing component.

[0007] As a preferred embodiment of this utility model, the outer sealing assembly includes an end cap shell, an end cap plate is fixedly connected to the outside of the end cap shell, the end cap plate is provided with several grooves, the end cap shell is integrally connected to the shell, and the inner side of the end cap shell is fixedly connected to the inner sealing assembly through several inner reinforcing strips.

[0008] As a preferred embodiment of this utility model, the inner sealing assembly includes an inner ring body, a connecting plate is provided at the end of the inner ring body, and an oil seal is provided on the inner side of the connecting plate.

[0009] As a preferred embodiment of this utility model, several of the grooves are arranged in a circular array at the connection between the end cap shell and the outer shell.

[0010] As a preferred embodiment of this utility model, the sides of the inner ring are hollow.

[0011] As a preferred embodiment of this utility model, the outer side of the outer shell is provided with reinforcing ribs at equal intervals, and the reinforcing ribs are inclined.

[0012] As a preferred embodiment of this utility model, a slot is provided in the middle of the outer side of each of the outer shells.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention significantly improves the ability to prevent backflow of mud and water. The groove of the outer sealing component can actively guide external mud and water into the buffer space, avoiding direct impact of mud and water on the sealing surface. The buffer space can depressurize and settle the incoming mud and water, reducing friction and wear of mud and sand on the sealing components. The oil seal of the inner sealing component, together with the connecting plate, forms a tight fit, constituting the final sealing barrier, effectively preventing residual water vapor and fine mud and sand from penetrating into the motor, reducing the risk of motor failure caused by mud and water erosion from the source, and extending the service life of the motor. Attached Figure Description

[0014] Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a second-view perspective perspective view of the present invention.

[0015] In the diagram: 1. Outer shell; 2. Reinforcing rib; 3. Groove; 4. End cap; 5. End cap plate; 6. Groove; 7. Inner ring; 8. Connecting plate; 9. Oil seal; 10. Inner reinforcing strip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Please see Figure 1-2 This utility model provides a technical solution: For an example, please refer to... Figure 1 , 2 An electric vehicle motor barrel end cap structure for preventing backflow of mud and water includes a set of outer shells 1 connected by several bolt groups. A motor is arranged between two outer shells 1. The two ends of the internal shaft of the motor extend through the middle of the two outer shells 1 to the outside. An end cap structure is provided in the middle of each outer shell 1. The end cap structure includes an inner sealing component and an outer sealing component. A buffer space is provided between the inner sealing component and the outer sealing component. Several grooves for connecting the outside and the buffer space are provided on the outside of the outer sealing component. The grooves are arranged in a circumferential array at the connection between the end cap outer shell 4 and the outer shell 1.

[0021] The sealing assembly is centered on the end cap housing 4, which is integrally connected to the housing 1. Several grooves are arranged in a circular array on the outside of the end cap housing 4 at the connection between the end cap housing 4 and the housing 1. When mud and water splash onto the end cap during vehicle operation, the grooves can actively guide most of the mud and water to the buffer space between the inner sealing assembly and the outer sealing assembly, rather than directly impacting the sealing surface. This avoids the mud and water from forming eddies and accumulating at the edge of the end cap, and reduces the direct friction of mud and sand on the seal. The inner side of the end cap housing 4 is fixedly connected to the inner sealing assembly by several inner reinforcing strips 10. The inner reinforcing strips 10 can improve the connection rigidity between the outer sealing assembly and the inner sealing assembly, prevent relative displacement caused by vehicle vibration, ensure the structural stability of the buffer space, and avoid the risk of mud and water leakage caused by gap changes.

[0022] The buffer space between the inner and outer sealing components is the core area for preventing mud and water from entering. The sudden expansion of the buffer space reduces the flow velocity and attenuates kinetic energy, effectively preventing high-pressure mud and water from directly impacting the inner sealing component. Simultaneously, the buffer space provides a deposition area for mud and sand particles: heavier particles settle at the bottom of the space under gravity, preventing them from contacting the sealing surface of the inner sealing component, thus reducing wear on subsequent seals.

[0023] Please refer to Figure 1 , 2 The outer sealing assembly includes an end cap housing 4, an end cap plate is fixedly connected to the outside of the end cap housing, and several grooves are provided on the end cap plate. The end cap housing 4 is integrally connected to the housing 1, and the inner side of the end cap housing 4 is fixedly connected to the inner sealing assembly through several inner reinforcing strips 10. The inner sealing assembly includes an inner ring body 7, a connecting plate 8 is provided at the end of the inner ring body 7, an oil seal 9 is provided on the inner side of the connecting plate 8, and the side of the inner ring body 7 is a hollow structure.

[0024] The inner ring 7 of the inner sealing assembly adopts a hollow structure on its side, which further optimizes the flexible buffering capacity of the buffer space: the hollow structure can absorb the local pressure generated by mud and water impact through small deformation, avoid the deformation of the seal caused by rigid impact, and at the same time reduce the overall structural weight and reduce the vibration load during vehicle operation.

[0025] The inner sealing assembly forms a tight seal with the inner ring 7, connecting plate 8, and oil seal 9, constituting the final barrier against mud and water. The connecting plate 8 connects the inner ring 7 and the oil seal 9, ensuring a tight fit between the oil seal 9 and the motor shaft. The oil seal 9 uses an elastic sealing material that can adaptively compensate for minor gaps as the shaft rotates, preventing residual moisture or fine mud and sand in the buffer space from entering the motor.

[0026] In addition, the rigid connection between the inner ring body 7 and the connecting plate 8, together with the support force transmitted by the end cover housing 4 through the inner reinforcing strip 10, can ensure that the oil seal 9 will not shift due to shaft vibration or temperature changes during long-term use, and maintain a stable sealing pressure.

[0027] Please refer to Figure 1 , 2 The outer side of the outer shell 1 is provided with reinforcing ribs 2 at equal intervals. The reinforcing ribs 2 are inclined. A slot 3 is provided in the middle of the outer side of each outer shell 1.

[0028] The inclined reinforcing ribs 2, which are equally spaced on the outer side of the outer shell 1, can improve the overall structural strength of the outer shell 1 and prevent the outer shell 1 from deforming due to bumps during vehicle operation, thereby ensuring the relative positional stability of the end cover structure and the outer shell 1 and indirectly maintaining the consistency of the sealing gap.

[0029] The slot 3 opened in the middle of the outer side of each housing 1 can reduce the structural weight and reduce vehicle energy consumption through hollow design; on the other hand, it can promote the dissipation of heat inside the motor through air convection, avoid the aging of sealing materials such as oil seal 9 caused by high temperature, and indirectly extend the service life of sealing components.

[0030] The robot body 1 has a connecting end 9 at its tail end for connecting a high-strength flexible rope. This rope has a dual function: first, in the event of a robot malfunction, it can be pulled back externally to prevent the robot from becoming stuck in the pipeline; second, in complex pipeline environments, the rope can help balance the robot's posture and prevent it from tipping over.

[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 motor end cap structure for preventing backflow of mud and water in an electric vehicle, comprising a set of outer shells (1) connected by a plurality of bolt groups, wherein a motor is disposed between two of the outer shells (1), and the two ends of the internal shaft of the motor extend outward through the middle of the outer shells (1) on both sides, characterized in that: Each of the outer casings (1) is provided with an end cap structure in the middle. The end cap structure includes an inner sealing component and an outer sealing component. A buffer space is provided between the inner sealing component and the outer sealing component. A plurality of grooves for connecting the outside and the buffer space are provided on the outside of the outer sealing component.

2. The electric vehicle motor barrel end cover structure for preventing backflow of mud and water according to claim 1, characterized in that: The outer sealing assembly includes an end cap shell (4), an end cap plate (5) is fixedly connected to the outside of the end cap shell (4), and a number of grooves (6) are provided on the end cap plate (5). The end cap shell (4) is integrally connected to the shell (1), and the inner side of the end cap shell (4) is fixedly connected to the inner sealing assembly through a number of inner reinforcing strips (10).

3. The motor cylinder end cover structure of the electric vehicle against water and mud backflow according to claim 2, characterized in that: The inner sealing assembly includes an inner ring body (7), and a connecting plate (8) is provided at the end of the inner ring body (7). An oil seal (9) is provided on the inner side of the connecting plate (8).

4. The motor cylinder end cover structure of the electric vehicle against water and mud backflow according to claim 3, characterized in that: Several of the grooves are arranged in a circular array at the connection between the end cap shell (4) and the shell (1).

5. The electric vehicle motor barrel end cover structure for preventing backflow of mud and water according to claim 4, characterized in that: The inner ring (7) has a hollow structure on its sides.

6. The electric vehicle motor barrel end cover structure for preventing backflow of mud and water according to any one of claims 1-5, characterized in that: The outer shell (1) is provided with reinforcing ribs (2) at equal intervals on the outer side, and the reinforcing ribs (2) are inclined.

7. The electric vehicle motor barrel end cover structure for preventing backflow of mud and water according to claim 6, characterized in that: Each of the outer shells (1) has a slot (3) in the middle of its outer side surface.

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