Stable aluminum casting end cover for vehicle
By introducing stabilizing, heat dissipation, and sealing components into the motor end cover, the problems of insufficient vibration buffering and poor sealing of the end cover structure are solved, thereby improving the stability and sealing of the end cover, ensuring the normal operation of the motor under vibration conditions and preventing contaminants from entering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JISHENG CASTING CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-17
AI Technical Summary
The existing motor end caps are not designed to adequately buffer and suppress vibration, resulting in loose connections. Furthermore, their simple sealing structure makes it difficult to effectively prevent the intrusion of external contaminants, thus affecting the normal operation and performance of the motor.
A stable automotive aluminum casting end cap was designed, comprising a stabilizing component, a heat dissipation component, and a sealing component. The stabilizing component enhances structural stability through axial positioning protrusions, annular reinforcing ribs, and fixing plates. The heat dissipation component improves heat dissipation efficiency through spiral heat dissipation grooves and heat dissipation fins. The sealing component prevents contaminants from entering through a multi-seal structure.
The end cover's structural stability and sealing reliability are enhanced, ensuring that it does not loosen under vibration conditions and effectively preventing impurities such as dust and moisture from entering, thus protecting the internal environment of the motor and improving its operational stability and performance.
Smart Images
Figure CN224138805U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a stable type of automotive aluminum casting end cap. Background Technology
[0002] With the rapid development of the new energy vehicle industry, the motor, as the core power component of new energy vehicles, plays a decisive role in the operation of the entire vehicle in terms of its performance and reliability. As an important part of the motor, the motor end cover not only needs to protect the core components such as the stator and rotor inside the motor, but also needs to ensure the stability and sealing of the motor during operation. Most automotive motor end covers on the market are made of aluminum castings. Although aluminum castings have advantages such as light weight, there are still some problems in practical applications.
[0003] Existing motor end caps are not sufficiently designed to buffer and suppress vibrations. During vehicle operation, road bumps and vibrations generated by the motor itself can easily cause the connection between the end cap and the motor body to loosen, affecting the normal operation of the motor. Furthermore, the sealing structure of traditional end caps is relatively simple and cannot effectively resist the intrusion of external pollutants such as rainwater and dust, which can contaminate the internal environment of the motor and reduce its performance. Therefore, we propose a stable aluminum casting end cap for automobiles. Utility Model Content
[0004] The purpose of this utility model is to provide a stable aluminum casting end cap for automobiles, so as to solve the problem that the existing motor end caps are not strong enough in terms of vibration buffering and suppression in their structural design. During the operation of a car, road bumps and vibrations generated by the motor itself can easily cause the connection between the end cap and the motor body to loosen, affecting the normal operation of the motor. In addition, the sealing structure of traditional end caps is relatively simple and cannot effectively resist the intrusion of external pollutants such as rainwater and dust, which pollutes the internal environment of the motor and reduces the working performance of the motor.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a stable automotive aluminum casting end cap, comprising an end cap body, wherein a stabilizing component and a heat dissipation component are provided on both the outer and inner sides of the end cap body, an axial hole is provided at the upper end of the end cap body, and a rubber sealing ring is fixedly installed at the lower edge of the end cap body, the stabilizing component includes an axial positioning protrusion fixedly installed at the axial center inside the end cap body, an annular reinforcing rib is fixedly installed inside the end cap body and outside the axial positioning protrusion, a fixing plate is fixedly installed on the bottom circumferential surface of the end cap body, and mounting ears are fixedly installed on both the left and right sides of the fixing plate.
[0006] As a preferred embodiment, the surfaces of the fixing plate and the two sets of mounting ears are provided with multiple sets of mounting holes.
[0007] As a preferred embodiment, the heat dissipation assembly includes an outer spiral heat dissipation groove and an inner spiral heat dissipation groove formed on the outer and inner surfaces of the end cover body, and a plurality of heat dissipation fins distributed at equal intervals are fixedly installed between the outer surface of the axial positioning protrusion and the inner surface of the annular reinforcing rib.
[0008] As a preferred embodiment, a number of radial support ribs distributed at equal intervals are fixedly installed between the outer surface of the annular reinforcing rib and the inner surface of the end cap body.
[0009] As a preferred embodiment, the top of the end cap body is provided with a sealing assembly, the sealing assembly including a mounting groove formed on the outer surface of the top of the end cap body, a top seat fixedly installed inside the mounting groove, and a fixing seat fixedly installed on the surface of the top seat by a number of sets of fixing bolts.
[0010] As a preferred embodiment, an end cap seal is fixedly installed on the surface of the fixed seat and around the shaft hole. A limiting ring is fitted onto the outer wall of the end cap seal. The limiting ring is fixedly connected to the fixed seat by multiple sets of fasteners. A stationary ring seal is fixedly installed on the inner wall of the limiting ring and above the end cap seal.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] 1. By setting up stabilizing and heat dissipation components, the end cap body is equipped with an axial positioning protrusion, which can accurately position the components in the axial direction and enhance the overall stability. The annular reinforcing rib improves its structural strength to withstand greater external forces and internal pressure. The fixing plate and mounting ears have multiple sets of mounting holes to facilitate bolt connection, making the end cap firmly installed and not loose during operation. The outer spiral heat dissipation groove and inner spiral heat dissipation groove increase the heat dissipation area, the heat dissipation fins enhance heat dissipation, and the radial support ribs reinforce from the radial direction, making the end cap strength distribution more uniform.
[0013] 2. By setting up a sealing component, the mounting groove provides precise positioning for the top seat, allowing it to be securely installed on the end cover body. The top seat is connected to the fixed seat by fixing bolts, making installation and disassembly convenient and stable, ensuring the overall stability of the sealing component. The fixed seat is equipped with end cover seals around the shaft hole to prevent dust, moisture and other impurities from entering the end cover body, protecting the components. The limiting ring is fitted onto the outer wall of the end cover seal and connected to the fixed seat through the fixing component to enhance the seal. The inner wall of the limiting ring is provided with a stationary ring seal above the end cover seal, forming multiple seals and secondary protection of the shaft hole, greatly improving the reliability of the seal. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0016] Figure 3 This is a partial structural schematic diagram of the present invention;
[0017] Figure 4 This is a schematic diagram of the sealing component structure of this utility model;
[0018] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.
[0019] In the diagram: 1. End cap body; 2. Stabilizing component; 3. Heat dissipation component; 4. Sealing component; 5. Shaft hole; 6. Rubber sealing ring; 201. Mounting ear; 202. Fixing plate; 203. Axial positioning protrusion; 204. Annular reinforcing rib; 205. Radial support rib; 301. Outer spiral heat dissipation groove; 302. Inner spiral heat dissipation groove; 303. Heat dissipation fins; 401. Mounting groove; 402. Top seat; 403. Fixing seat; 404. Fixing bolt; 405. End cap seal; 406. Limiting retaining ring; 407. Stationary ring seal; 408. Fixing component. 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] Please see the appendix Figure 1 - Appendix Figure 3 A stable automotive aluminum casting end cap includes an end cap body 1. The end cap body 1 has a stabilizing component 2 and a heat dissipation component 3 on both its outer and inner sides. The upper end of the end cap body 1 has a shaft hole 5, and a rubber sealing ring 6 is fixedly installed at the lower edge of the end cap body 1. The stabilizing component 2 includes an axial positioning protrusion 203 fixedly installed at the center of the shaft inside the end cap body 1. An annular reinforcing rib 204 is fixedly installed inside the end cap body 1 and outside the axial positioning protrusion 203. A fixing plate 202 is fixedly installed on the bottom circumferential surface of the end cap body 1. Mounting ears 201 are fixedly installed on both the left and right sides of the fixing plate 202. The end cap body 1 serves as a basic load-bearing structure, with the stabilizing component 2 and heat dissipation component 3 working together on its outer and inner sides. The shaft hole 5 at the upper end is used to adapt to relevant shaft components, while the rubber sealing ring 6 at the lower edge effectively prevents external impurities and liquids from entering, comprehensively ensuring the functionality and stability of the end cap.
[0022] Multiple mounting holes are provided on the surfaces of the fixing plate 202 and the two sets of mounting ears 201. The multiple mounting holes provided on the surfaces of the fixing plate 202 and the two sets of mounting ears 201 facilitate the use of bolts and other connecting parts to securely install the end cover on the corresponding parts of the vehicle, ensuring that the end cover will not be displaced due to vibration or other factors during vehicle operation.
[0023] The heat dissipation assembly 3 includes an outer spiral heat dissipation groove 301 and an inner spiral heat dissipation groove 302 formed on the outer and inner surfaces of the end cover body 1. A number of heat dissipation fins 303 are fixedly installed between the outer surface of the axial positioning protrusion 203 and the inner surface of the annular reinforcing rib 204. The outer spiral heat dissipation groove 301 and the inner spiral heat dissipation groove 302 on the outer and inner surfaces of the end cover body 1 utilize the principle of air flow to increase the heat dissipation area. Combined with the heat dissipation fins 303 that are evenly distributed between the outer surface of the axial positioning protrusion 203 and the inner surface of the annular reinforcing rib 204, the heat generated when the end cover is working can be quickly dissipated.
[0024] Several sets of radial support ribs 205 are fixedly installed between the outer surface of the annular reinforcing rib 204 and the inner surface of the end cap body 1. The radial support ribs 205, which are equally spaced between the outer surface of the annular reinforcing rib 204 and the inner surface of the end cap body 1, enhance the structural strength of the end cap from the radial direction, so that the end cap can maintain good structural integrity and is not easily deformed when subjected to forces from different directions.
[0025] Specifically, the end cap body 1, by setting the axial positioning protrusion 203, can accurately position the component in the axial direction, ensuring the positional accuracy of the end cap during installation and use, and enhancing the overall stability. The annular reinforcing rib 204 improves the structural strength of the end cap body 1, enabling it to withstand greater external forces and internal pressures. The design of the fixing plate 202 and the mounting ear 201 provides a convenient and reliable installation method. Multiple sets of mounting holes facilitate the secure fixing of the end cap to the corresponding position using bolts and other connecting parts, ensuring that the end cap will not loosen during vehicle operation. The outer spiral heat dissipation groove 301 and the inner spiral heat dissipation groove 302 are opened on the inner and outer surfaces of the end cap body 1, increasing the heat dissipation area. The heat dissipation fins 303 further increase the internal heat dissipation area of the end cap body 1, enhancing the heat dissipation effect. The radial support rib 205 supports and strengthens the end cap structure from the radial direction, making the strength of the end cap more uniform in all directions.
[0026] Please see the appendix Figure 1 and appendix Figure 4 - Appendix Figure 5The top of the end cap body 1 is provided with a sealing component 4. The sealing component 4 includes a mounting groove 401 opened on the outer surface of the top of the end cap body 1. A top seat 402 is fixedly installed inside the mounting groove 401. A fixing seat 403 is fixedly installed on the surface of the top seat 402 by a number of fixing bolts 404. The mounting groove 401 provides precise positioning for the top seat 402, which facilitates the firm installation of the top seat 402. The top seat 402 is connected to the fixing seat 403 by a number of fixing bolts 404. This connection method is convenient for installation and disassembly, and can ensure the stability of the fixing seat 403 after installation.
[0027] An end cap seal 405 is fixedly installed on the surface of the fixed base 403 and around the shaft hole 5. A limiting ring 406 is fitted onto the outer wall of the end cap seal 405. The limiting ring 406 and the fixed base 403 are fixedly connected by multiple sets of fasteners 408. A stationary ring seal 407 is fixedly installed on the inner wall of the limiting ring 406 and above the end cap seal 405. The end cap seal 405 installed on the surface of the fixed base 403 around the shaft hole 5 can effectively prevent dust, moisture and other impurities from entering the end cap body 1 through the shaft hole 5. The limiting ring 406 is fitted onto the outer wall of the end cap seal 405 and connected to the fixed base 403 by multiple sets of fasteners 408 to further fix the end cap seal 405 and enhance the sealing effect. The stationary ring seal 407 installed on the inner wall of the limiting ring 406 above the end cap seal 405 forms a multi-seal structure to provide secondary protection for the shaft hole 5.
[0028] Specifically, the mounting groove 401 provides precise installation positioning for the top seat 402, facilitating accurate installation of the top seat 402 onto the end cover body 1 and ensuring reliable fixation. The top seat 402 is connected to the fixed seat 403 via several sets of fixing bolts 404. This connection method facilitates installation and disassembly while ensuring the stability of the fixed seat 403 after installation, thus stabilizing the overall structure of the sealing assembly. The end cover seal 405 is installed around the shaft hole 5 on the surface of the fixed seat 403, effectively preventing dust, moisture, and other impurities from entering the end cover body 1 through the shaft hole 5, protecting internal components. The limiting retaining ring 406 is fitted onto the outer wall of the end cover seal 405 and connected to the fixed seat 403 via multiple sets of fixing parts 408, further securing the end cover seal 405 and enhancing the sealing effect. Simultaneously, a stationary ring seal 407 is installed on the inner wall of the limiting retaining ring 406 above the end cover seal 405, forming a multi-layer sealing structure for secondary sealing of the shaft hole 5, greatly improving the reliability of the seal.
[0029] The working principle of this utility model is as follows: This utility model is a stable aluminum casting end cap for automobiles. First, the stabilizing component 2 functions, with the axial positioning protrusion 203 precisely positioning the component in the axial direction. The annular reinforcing rib 204 enhances the structural strength of the end cap body 1 to withstand external forces and internal pressures. The fixing plate 202 and mounting ears 201 are firmly fixed to the end cap through surface mounting holes and bolts, ensuring that the end cap is accurately positioned and does not loosen during vehicle operation. Second, the heat dissipation component 3 operates, with the outer spiral heat dissipation groove 301 and the inner spiral heat dissipation groove 302 increasing the heat dissipation area inside and outside the end cap body 1, thus improving heat dissipation. Fins 303 further enhance internal heat dissipation, and radial support ribs 205 uniformly strengthen the end cover from the radial direction, ensuring that the end cover operates at a suitable temperature. Finally, the sealing component 4 takes effect, the mounting groove 401 precisely positions the top seat 402, and the top seat 402 is connected to the fixing seat 403 by the fixing bolts 404 to ensure overall stability. The end cover seal 405 prevents impurities from entering from the shaft hole 5. The limiting ring 406, together with the fixing component 408, further fixes the end cover seal 405. The stationary ring seal 407 provides a secondary seal at the shaft hole 5, protecting the internal components of the end cover. At this point, the entire process is complete.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stabilised end cover for an aluminium automotive casting comprising an end cover body (1), characterised in that: The outer and inner sides of the end cap body (1) are provided with a stabilizing component (2) and a heat dissipation component (3). The upper end of the end cap body (1) is provided with a shaft hole (5), and a rubber sealing ring (6) is fixedly installed at the lower edge of the end cap body (1). The stabilizing component (2) includes an axial positioning protrusion (203) fixedly installed at the center of the shaft inside the end cap body (1). An annular reinforcing rib (204) is fixedly installed inside the end cap body (1) and outside the axial positioning protrusion (203). A fixing plate (202) is fixedly installed on the bottom circumferential surface of the end cap body (1). Mounting ears (201) are fixedly installed on both the left and right sides of the fixing plate (202).
2. The stable end cover for aluminum castings for vehicles according to claim 1, characterized in that: The surfaces of the fixing plate (202) and the two sets of mounting ears (201) are each provided with multiple sets of mounting holes.
3. The stable end cover for aluminum castings for vehicles according to claim 1, characterized in that: The heat dissipation assembly (3) includes an outer spiral heat dissipation groove (301) and an inner spiral heat dissipation groove (302) formed on the outer and inner surfaces of the end cover body (1). A plurality of heat dissipation fins (303) are fixedly installed between the outer surface of the axial positioning protrusion (203) and the inner surface of the annular reinforcing rib (204).
4. The stable end cover for aluminum castings for vehicles according to claim 1, characterized in that: Several sets of radial support ribs (205) are fixedly installed between the outer surface of the annular reinforcing rib (204) and the inner surface of the end cap body (1).
5. The stable end cover for aluminum automotive castings of claim 1, wherein: The top of the end cap body (1) is provided with a sealing assembly (4). The sealing assembly (4) includes a mounting groove (401) opened on the outer surface of the top of the end cap body (1). A top seat (402) is fixedly installed inside the mounting groove (401). A fixing seat (403) is fixedly installed on the surface of the top seat (402) by a number of fixing bolts (404).
6. The stable end cover for aluminum castings for vehicles according to claim 5, characterized in that: An end cap seal (405) is fixedly installed on the surface of the fixed base (403) and around the shaft hole (5). A limiting ring (406) is sleeved on the outer wall of the end cap seal (405). The limiting ring (406) is fixedly connected to the fixed base (403) by multiple sets of fixing parts (408). A stationary ring seal (407) is fixedly installed on the inner wall of the limiting ring (406) and above the end cap seal (405).