Flywheel housing capable of reducing oil leakage defect
By installing sealing and ventilation components on the flywheel housing, the problems of loose sealing gaskets and insufficient ventilation devices are solved, thereby improving sealing and ventilation performance and reducing the risk of oil leakage and internal contamination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN XINZHONG GRP
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-21
AI Technical Summary
The existing flywheel housing gaskets are prone to loosening under the influence of mechanical vibration and temperature changes, resulting in a decrease in sealing performance. Furthermore, the venting device cannot effectively filter oil mist and impurities in the exhaust gas, affecting the normal operation of the components.
The sealing assembly consists of sealing ring one, sealing ring two, and clamps, which are connected by hinges and fastened with threaded rods to enhance the sealing performance; a one-way valve and filter cotton are installed in the pipeline to prevent backflow of external substances and filter impurities.
It effectively prevents oil leakage, keeps the inside of the flywheel housing clean, reduces oil mist and dust pollution, improves sealing and ventilation, and ensures the normal operation of the flywheel housing.
Smart Images
Figure CN224150473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, and in particular to a flywheel housing that reduces oil leakage defects. Background Technology
[0002] The flywheel housing is a part on the engine used to cover the flywheel. It is installed between the engine and the gearbox, externally connected to the crankcase, starter, and oil pan, and internally housing the flywheel assembly. It serves to connect the engine body, provide protection, and act as a carrier.
[0003] A traditional flywheel housing mainly consists of a housing, mounting flange, and bearing housing. The housing is usually made of cast iron or aluminum alloy and is connected to the engine block and transmission via the mounting flange. The bearing housing is used to support the flywheel shaft or clutch shaft.
[0004] Existing flywheel housing gaskets are prone to loosening and deformation when subjected to mechanical vibration, temperature changes, and other factors, leading to a decrease in sealing performance and leakage of lubricating oil from the top or connection points of the flywheel housing. Furthermore, the venting device relies solely on simple vent holes, which cannot effectively filter oil mist and impurities in the discharged gas, nor can it prevent external contaminants from flowing back into the flywheel housing, thus polluting the internal environment of the flywheel housing and affecting the normal operation of the components. Therefore, a flywheel housing with reduced oil leakage defects is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a flywheel housing that reduces oil leakage defects, aiming to improve the problem in the prior art where the sealing gasket is prone to loosening and deformation when affected by external factors, resulting in a decrease in sealing effect.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A flywheel housing for reducing oil leakage defects includes a flywheel housing body and a protective cover. A connecting block is fixedly connected to the top of the flywheel housing body, and a screw hole is opened in the middle of the connecting block. A sealing component is installed on the top of the flywheel housing body, and a venting component is installed on the outside of the flywheel housing body.
[0008] The sealing assembly includes a second sealing ring, which is fixedly connected to the top of the flywheel housing body. A first sealing ring is fixedly connected to the outside of the second sealing ring. Two clamps are provided on the outside of the first sealing ring, and a fixing block is fixedly connected to the outside of each clamp. A threaded rod is threadedly connected to the middle of the fixing block.
[0009] As a further description of the above technical solution:
[0010] A hinge is provided between the two clamps;
[0011] As a further description of the above technical solution:
[0012] The ventilation assembly includes a pipe, which is fixedly connected to the middle of the flywheel housing body. A one-way valve is provided in the middle of the pipe, and filter cotton is fixedly connected to the outside of the pipe.
[0013] As a further description of the above technical solution:
[0014] A vent hole is provided in the middle of the flywheel housing body, and the pipe is fixedly connected to the outside of the vent hole;
[0015] As a further description of the above technical solution:
[0016] A locking block is fixedly connected to the outer side of the flywheel housing body, and a locking groove is opened inside the protective cover, which engages with the locking block;
[0017] As a further description of the above technical solution:
[0018] The slot has a movable block slidably connected inside, and a spring is fixedly connected to the outside of the movable block. The spring is fixedly connected inside the protective cover.
[0019] As a further description of the above technical solution:
[0020] The movable block is in contact with the surface of the card block;
[0021] As a further description of the above technical solution:
[0022] The protective cover is installed on the outside of the filter cotton.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, by setting a sealing assembly consisting of a sealing ring one, a sealing ring two, and clamps on the top of the flywheel housing body, the two clamps are connected by a hinge and fastened by a threaded rod, which can effectively fix and press the sealing rings, thereby enhancing the sealing performance of the top of the flywheel housing and reducing the risk of oil leakage.
[0025] 2. In this utility model, by setting a one-way valve in the middle of the pipe, it is possible to prevent external air, dust, moisture and other substances from flowing back into the flywheel housing when the engine is under negative pressure; the filter cotton is fixedly connected to the outside of the pipe, which can filter oil mist, dust and other impurities in the exhaust gas, so as to avoid them from polluting the environment and accumulating in the ventilation pipe and affecting the ventilation effect. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a flywheel housing for reducing oil leakage defects according to the present invention.
[0027] Figure 2 This is a schematic diagram of the structure of a clamp for reducing oil leakage defects in a flywheel housing, as proposed in this utility model.
[0028] Figure 3 This is a schematic diagram of the structure of a one-way valve for a flywheel housing to reduce oil leakage defects, as proposed in this utility model.
[0029] Figure 4 This is a schematic diagram of the structure of the movable block of a flywheel housing to reduce oil leakage defects according to the present invention.
[0030] Figure 5 for Figure 3 Enlarged view of point A in the middle.
[0031] Legend:
[0032] 1. Flywheel housing body; 2. Screw hole; 3. Protective cover; 4. Connecting block; 5. Clamp; 6. Hinge; 7. Fixing block; 8. Threaded rod; 9. Sealing ring one; 10. Sealing ring two; 11. Vent hole; 12. Pipe; 13. One-way valve; 14. Filter cotton; 15. Locking block; 16. Spring; 17. Moving block; 18. Slot. Detailed Implementation
[0033] 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.
[0034] Reference Figure 1 - Figure 5The present invention provides an embodiment of a flywheel housing for reducing oil leakage defects, comprising a flywheel housing body 1 and a protective cover 3. A connecting block 4 is fixedly connected to the top of the flywheel housing body 1, and a screw hole 2 is provided in the middle of the connecting block 4. A sealing assembly is installed on the top of the flywheel housing body 1, and a venting assembly is installed on the outside of the flywheel housing body 1. The sealing assembly includes a second sealing ring 10, which is fixedly connected to the top of the flywheel housing body 1. A first sealing ring 9 is fixedly connected to the outside of the second sealing ring 10. Two clamps 5 are provided on the outside of the first sealing ring 9, and a fixing block 7 is fixedly connected to the outside of each clamp 5. A threaded rod 8 is threadedly connected to the middle of the fixing block 7. A hinge 6 is provided between the two clamps 5, and the two clamps 5 are connected by the hinge 6. The clamps 5 open and close around the sealing ring 9 and the sealing ring 10. When the threaded rod 8 is rotated and tightened, the clamps 5 tighten and apply pressure to the sealing rings 9 and 10, so that they fit tightly against the top of the flywheel housing body 1. This prevents the sealing rings from loosening or shifting under the influence of mechanical vibration, temperature changes, etc., and prevents oil leakage from the top of the flywheel housing. A locking block 15 is fixedly connected to the outside of the flywheel housing body 1. A locking groove 18 is opened inside the protective cover 3. The locking groove 18 engages with the locking block 15. Through the engagement of the locking block 15 and the locking groove 18, the protective cover 3 can be installed on the flywheel housing body 1, and the two are firmly connected together, thus providing support and fixation for the protective cover 3 and ensuring that it will not easily fall off during the operation of the flywheel housing. A movable block 17 is slidably connected inside the locking groove 18. A spring 16 is fixedly connected to the outside of the movable block 17. The spring 16 is fixedly connected inside the protective cover 3. The movable block 17 contacts the surface of the locking block 15. When the locking block 15 is inserted into the slot 18, the movable block 17 presses tightly against the locking block 15 under the action of the spring 16, increasing the friction and fastening force between the locking block 15 and the slot 18, preventing the locking block 15 from loosening or falling out in the slot 18, thereby making the connection between the flywheel housing body 1 and the protective cover 3 more stable.
[0035] Reference Figure 1 and Figure 3The ventilation assembly includes a pipe 12, which is fixedly connected to the middle of the flywheel housing body 1. A one-way valve 13 is installed in the middle of the pipe 12. The one-way valve 13, installed inside the pipe 12, allows gas inside the flywheel housing to be discharged in one direction, preventing external air, dust, moisture, etc., from flowing back into the flywheel housing when the engine is under negative pressure. This ensures the cleanliness and normal pressure balance inside the flywheel housing. A filter cotton 14 is fixedly connected to the outside of the pipe 12. A vent hole 11 is opened in the middle of the flywheel housing body 1, and the pipe 12 is fixedly connected to the outside of the vent hole 11. A protective cover 3 is installed outside the filter cotton 14. When the flywheel housing is working, pressure changes occur inside, requiring ventilation. The discharged gas carries impurities such as oil mist and dust. The filter cotton 14 can intercept and absorb these impurities, preventing oil mist and dust from polluting the surrounding environment. This helps maintain stable pressure inside the flywheel housing and reduces the risk of oil leakage due to abnormal pressure.
[0036] Working principle: The sealing ring 9 and the sealing ring 10 are fixed on the flywheel housing body 1. By rotating the threaded rod 8, the clamp 5 is tightened, which generates pressure on the sealing ring 9 and the sealing ring 10, making them fit tightly against the top of the flywheel housing body 1, thereby preventing oil from leaking from the top of the flywheel housing and achieving a sealing effect.
[0037] Due to engine operation, the flywheel housing 1 generates pressure and oil vapor. This gas is discharged through the central vent 11 and pipe 12. A one-way valve 13 allows the gas to exit the flywheel housing 1 in one direction, preventing backflow of outside air and impurities when the pressure inside the flywheel housing is low. The filter cotton 14 filters the discharged gas, absorbing oil mist and dust, preventing impurities from accumulating in the vent pipe 12 and affecting ventilation and oil leakage. A protective cover 3 protects the pipe 12 and filter cotton 14 from external impacts, damage, or blockage by debris.
[0038] 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 flywheel housing for reducing oil leakage defects, comprising a flywheel housing body (1) and a protective cover (3), characterized in that: A connecting block (4) is fixedly connected to the top of the flywheel housing body (1). A screw hole (2) is opened in the middle of the connecting block (4). A sealing component is installed on the top of the flywheel housing body (1). A ventilation component is installed on the outside of the flywheel housing body (1). The sealing assembly includes a second sealing ring (10), which is fixedly connected to the top of the flywheel housing body (1). A first sealing ring (9) is fixedly connected to the outside of the second sealing ring (10). Two clamps (5) are provided on the outside of the first sealing ring (9). A fixing block (7) is fixedly connected to the outside of each clamp (5). A threaded rod (8) is threadedly connected to the middle of the fixing block (7).
2. A flywheel housing with reduced oil leakage according to claim 1, characterized in that: A hinge (6) is provided between the two clamps (5).
3. The flywheel housing of claim 1, wherein: The ventilation assembly includes a pipe (12), which is fixedly connected to the middle of the flywheel housing body (1). A one-way valve (13) is provided in the middle of the pipe (12), and a filter cotton (14) is fixedly connected to the outside of the pipe (12).
4. A flywheel housing with reduced oil leakage according to claim 3, characterized in that: A vent hole (11) is provided in the middle of the flywheel housing body (1), and the pipe (12) is fixedly connected to the outside of the vent hole (11).
5. The flywheel housing of claim 1, wherein: A locking block (15) is fixedly connected to the outside of the flywheel housing body (1), and a locking groove (18) is opened inside the protective cover (3), which is engaged with the locking block (15).
6. A flywheel housing for reducing oil leakage defects according to claim 5, characterized in that: The slot (18) is slidably connected to a movable block (17), and a spring (16) is fixedly connected to the outside of the movable block (17). The spring (16) is fixedly connected to the inside of the protective cover (3).
7. A flywheel housing with reduced oil leakage according to claim 6, characterized in that: The movable block (17) is in contact with the surface of the card block (15).
8. The flywheel housing of claim 3, wherein: The protective cover (3) is installed on the outside of the filter cotton (14).