Automobile gearbox end cover
By employing connecting bolts and ratchet pawl structures, heat pipes, and flow control rings on the gearbox end cover, the sealing problem was solved, achieving efficient heat dissipation and noise reduction, thus improving the gearbox's operational reliability and environmental friendliness.
Patent Information
- Application Number
- CN202520623460.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing gearbox end caps are prone to sealing failure under high temperature, high pressure and long-term mechanical vibration, leading to gearbox oil leakage, affecting component wear and potentially causing environmental pollution.
An automotive gearbox end cover was designed, employing a connecting bolt and ratchet pawl structure, combined with a slider and spring design to ensure reliable connection; internally, a heat dissipation pipe, a flow control ring, and a sealing rod are installed to control oil flow; the surface is coated with a graphene-modified heat dissipation and sound insulation coating to enhance heat dissipation and noise reduction.
It improves the sealing performance and disassembly efficiency of the end cap, enhances heat dissipation, reduces noise transmission, and ensures the normal operation of the gearbox and environmental protection.
Smart Images
Figure CN223839706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox technology, specifically to an automotive gearbox end cover. Background Technology
[0002] In today's rapidly evolving automotive industry, consumers are increasingly focused on vehicle performance, comfort, and energy efficiency. These rising demands are driving continuous technological innovation in core automotive components, with the transmission playing a particularly crucial role. As an indispensable part of the transmission, the transmission end cover is also facing unprecedented challenges.
[0003] The sealing performance of the transmission end cap directly affects the normal operation of the transmission. Existing sealing structures and materials are prone to failure when exposed to high temperatures, high pressures, and prolonged mechanical vibrations. Transmission fluid leakage not only leads to insufficient lubrication and wear on components, but can also pollute the surrounding environment.
[0004] In response to the problems raised in the above article, we propose an end cover for automotive gearboxes. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automotive gearbox end cover, which can effectively solve the problems in the existing technology.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model provides an end cover for an automotive gearbox, including an end cover body, a heat dissipation pipe is provided inside the end cover body, and multiple connecting bolts are threaded inside the end cover body, with ratchet wheels fixedly connected to the outside of each of the multiple connecting bolts.
[0008] The top of the end cap body is provided with a sliding groove that matches the number of connecting bolts. A slider is slidably connected inside the sliding groove. A pawl is provided on the top of the slider, and the pawl is engaged with a ratchet.
[0009] According to the above-mentioned automobile gearbox end cover, a spring is fixedly connected inside the slide groove, and the spring is fixedly connected to the slider.
[0010] According to the above-mentioned automotive gearbox end cover, a flow control ring is fixedly installed inside the heat dissipation pipe, a sealing rod is slidably connected inside the flow control ring, and an installation block is fixedly installed inside the heat dissipation pipe.
[0011] According to the above-mentioned automotive gearbox end cover, a second slider is slidably connected inside the mounting block, the second slider is fixedly connected to a sealing rod, and a second spring is fixedly connected inside the mounting block, the second spring is fixedly connected to the second slider.
[0012] According to the above-mentioned automotive gearbox end cover, the surface of the end cover body is provided with multiple micro heat dissipation channels.
[0013] According to the above-mentioned automotive gearbox end cover, the surface of the end cover body is coated with a graphene-modified heat dissipation and sound insulation coating.
[0014] The technical solution provided by this utility model has the following advantages compared with the known prior art:
[0015] This invention uses connecting bolts to connect the end cover body to the gearbox. After connection, the connecting bolts will not be installed backwards due to the characteristics of the ratchet and pawl, thus avoiding sealing problems caused by vibration. When the end cover body needs to be disassembled, the slider is used to push the pawl to move, so that the pawl and ratchet are disengaged, allowing for removal. The operation is simple and quick, and no additional tools are required, greatly improving the efficiency of installation and disassembly. Furthermore, the cooperation between the connecting bolts and the ratchet greatly improves the sealing performance of the device. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a bottom view of the present invention;
[0020] Figure 4 This is a cross-sectional view of the heat dissipation pipe of this utility model;
[0021] Figure 5 This is a cross-sectional view of the mounting block of this utility model.
[0022] Reference numerals: 1. End cap body; 3. Heat dissipation pipe; 11. Connecting bolt; 12. Ratchet; 13. Pawl; 14. Slide groove; 15. Spring 1; 16. Slider 2; 19. Micro heat dissipation channel; 31. Flow control ring; 32. Sealing rod; 33. Mounting block; 34. Spring 2; 35. Slider 2. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0024] The present invention will be further described below with reference to the embodiments.
[0025] Example: Refer to Figures 1 to 5 A car gearbox end cover, including an end cover body 1, a heat dissipation pipe 3 inside the end cover body 1, and multiple connecting bolts 11 threaded inside the end cover body 1, with ratchet 12 fixedly connected to the outside of each of the multiple connecting bolts 11.
[0026] The top of the end cover body 1 is provided with a groove 14 matching the number of connecting bolts 11. A slider 16 is slidably connected inside the groove 14. A pawl 13 is provided on the top of the slider 16. The pawl 13 is engaged with the ratchet 12. The end cover body 1 and the gearbox are connected by the connecting bolts 11. After the connection is completed, the connecting bolts 11 and the ratchet 12 will loosen due to their characteristics, thereby improving the sealing of the device. A spring 15 is fixedly connected inside the groove 14. The spring 15 is fixedly connected to the slider 16. The spring 15 can automatically reset the slider 16 after it is displaced.
[0027] A flow control ring 31 is fixedly installed inside the heat pipe 3. A sealing rod 32 is slidably connected inside the flow control ring 31. An installation block 33 is fixedly installed inside the heat pipe 3. Through the cooperation of the flow control ring 31 and the sealing rod 32, the transmission oil can flow orderly and at a moderate flow rate inside the heat pipe 3, thereby effectively improving heat dissipation. A slider 35 is slidably connected inside the installation block 33. The slider 35 is fixedly connected to the sealing rod 32. A spring 34 is fixedly connected inside the heat pipe 3. The spring 34 is fixedly connected to the slider 35. Through the cooperation of the spring 34 and the slider 35, the sealing rod 32 can be kept in contact with the flow control ring 31, so as not to have an excessively fast flow rate.
[0028] Multiple micro-heat dissipation channels 19 are formed on the surface of the end cap body 1, which significantly increase the heat dissipation area. Because the fluid flow characteristics within the micro-heat dissipation channels 19 differ from those in conventional channels, efficient heat dissipation is achieved. The surface of the end cap body 1 is coated with a graphene-modified heat-dissipating and sound-insulating coating. The heat-dissipating coating enhances the end cap's thermal radiation capacity, accelerating heat dissipation to the surrounding environment. The sound-insulating coating absorbs and reflects noise, reducing its propagation. The coating thickness and composition are precisely controlled to achieve an optimal balance between heat dissipation and noise reduction.
[0029] The working principle of this utility model is as follows: The end cover body 1 is connected to the gearbox via the connecting bolt 11. After the connection is completed, the connecting bolt 11 will not be reversed due to the characteristics between the ratchet 12 and the pawl 13, thus avoiding sealing problems caused by vibration. When the end cover body 1 needs to be disassembled, the slider 16 pushes the pawl 13 to move, so that the pawl 13 and the ratchet 12 are disengaged, and the device can be disassembled. The operation is simple and quick, and no additional tools are required, which greatly improves the efficiency of installation and disassembly. The cooperation between the connecting bolt 11 and the ratchet 12 can greatly improve the sealing of the device. The gearbox oil in the gearbox flows inside the cooling pipe 3, increasing the residence time of the oil inside the cooling pipe 3 and improving the heat dissipation efficiency. The cooperation between the flow control ring 31 and the sealing rod 32 ensures that the flow rate is always at a moderate level. The heat dissipation effect is further improved by the multiple micro heat dissipation channels 19 and the graphene-modified heat dissipation and sound insulation coating.
[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. An automotive gearbox end cover, comprising an end cover body (1), characterized in that: The end cap body (1) is provided with a heat dissipation pipe (3) inside. The end cap body (1) is threaded with multiple connecting bolts (11) inside. Ratchets (12) are fixedly connected to the outside of the multiple connecting bolts (11). The top of the end cap body (1) is provided with a groove (14) matching the number of connecting bolts (11). A slider (16) is slidably connected inside the groove (14). A pawl (13) is provided on the top of the slider (16). The pawl (13) is engaged with a ratchet (12).
2. The automotive gearbox end cover according to claim 1, characterized in that: A spring (15) is fixedly connected inside the slide (14), and the spring (15) is fixedly connected to the slider (16).
3. The automotive gearbox end cover according to claim 1, characterized in that: A flow control ring (31) is fixedly installed inside the heat dissipation pipe (3), a sealing rod (32) is slidably connected inside the flow control ring (31), and an installation block (33) is fixedly installed inside the heat dissipation pipe (3).
4. The automotive gearbox end cover according to claim 3, characterized in that: The mounting block (33) has a sliding block two (35) inside, which is fixedly connected to the sealing rod (32). The mounting block (33) also has a fixedly connected spring two (34) inside, which is fixedly connected to the sliding block two (35).
5. The automotive gearbox end cover according to claim 1, characterized in that: The surface of the end cap body (1) is provided with multiple micro heat dissipation channels (19).
6. The automotive gearbox end cover according to claim 1, characterized in that: The surface of the end cap body (1) is coated with a graphene-modified heat dissipation and sound insulation coating.