Sealing cover assembly and transmission shaft device of vehicle

Abstract

The utility model provides a sealing cover assembly and a transmission shaft device of a vehicle. The sealing cover assembly comprises an annular workpiece module, a first sealing cover and a second sealing cover. The first sealing cover is connected to the end part of the annular workpiece; the first sealing cover is arranged on the outer side of the shaft rod in a sleeving mode, the first sealing cover is provided with a first inner side wall, the first inner side wall is oppositely arranged relative to the peripheral side wall of the shaft rod, and an exhaust groove is formed in the first inner side wall; the exhaust groove communicates with a first space formed by the first sealing cover and the annular workpiece; the second sealing cover is connected to the first sealing cover and arranged on the outer side of the shaft rod in a sleeving mode, a second space is formed between the second sealing cover and the shaft rod, and the exhaust groove communicates with the first space and the second space so as to exhaust gas in the first space, so that the gas in the first space flows to the second space through the exhaust groove and is prevented from being concentrated in the first space; the first sealing cover is prevented from bulging due to too high air pressure, and the service life of the first sealing cover is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing cover assemblies, and more particularly to a sealing cover assembly and a vehicle drive shaft device. Background Technology

[0002] The driveshaft assembly is a crucial component for transmitting power in automotive transmissions, and the sealing cover assembly is part of this driveshaft assembly. Specifically, the sealing cover assembly includes an annular workpiece, a universal joint, a shaft, and a sealing cover. The annular workpiece is rotatably connected to the universal joint, and the sealing cover seals the annular workpiece and the shaft. However, when the annular workpiece rotates at high speed, it causes the universal joint to heat up, increasing the air pressure and making the sealing cover prone to expansion and bulging. This leads to the technical problem of existing sealing cover assemblies being prone to sealing cover breakage and failure. Utility Model Content

[0003] The purpose of this utility model is to provide a sealing cover assembly and a vehicle drive shaft device. The annular workpiece module includes an annular workpiece, a universal joint, and a shaft. The universal joint is built into the annular workpiece. The shaft passes through the annular workpiece and is inserted into the mounting hole of the universal joint. A first sealing cover is disposed between the annular workpiece and the shaft and connected to the end of the annular workpiece. The first sealing cover is sleeved on the outside of the shaft and has a first inner sidewall. The first inner sidewall is arranged opposite to the circumferential sidewall of the shaft and has an exhaust groove. The exhaust groove connects the first sealing cover and the first space formed by the annular workpiece. A second sealing cover is connected to the first sealing cover and sleeved on the outside of the shaft. A second space is formed between the second sealing cover and the shaft. The exhaust groove connects the first space and the second space to discharge the gas in the first space, so that the gas in the first space can flow to the second space through the exhaust groove, avoiding gas concentration in the first space, preventing the first sealing cover from bulging due to excessive gas pressure, and extending the service life of the first sealing cover.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sealing cover assembly, comprising:

[0005] A ring-shaped workpiece module includes a ring-shaped workpiece, a universal joint, and a shaft; the universal joint is built into the ring-shaped workpiece; the shaft passes through the ring-shaped workpiece and is inserted into the mounting hole of the universal joint;

[0006] A first sealing cover is disposed between the annular workpiece and the shaft, and connected to the end of the annular workpiece; the first sealing cover is sleeved on the outside of the shaft, and the first sealing cover has a first inner sidewall, which is arranged opposite to the peripheral sidewall of the shaft, and the first inner sidewall has an exhaust groove; the exhaust groove connects the first space formed by the first sealing cover and the annular workpiece.

[0007] The second sealing cover is connected to the first sealing cover and sleeved on the outside of the shaft. A second space is formed between the second sealing cover and the shaft. The exhaust groove connects the first space and the second space to exhaust the gas in the first space.

[0008] Optionally, the exhaust groove is recessed in the first inner sidewall;

[0009] The exhaust groove is disposed on one side of the first space along the axis of the shaft, one end of the exhaust groove is connected to the first space, and the other end of the exhaust groove is connected to the second space.

[0010] Optionally, the exhaust groove includes a plurality of recessed portions; the plurality of recessed portions are formed along the axial direction of the first sealing cover on the first inner sidewall and are interconnected.

[0011] Optionally, the plurality of groove portions include a first groove portion, a second groove portion, and a third groove portion;

[0012] The second groove is located between the first groove and the third groove, and connects the first groove and the third groove;

[0013] The second groove portion is connected to the first groove portion in a transitional connection structure, and the second groove portion is connected to the third groove portion in a transitional connection structure.

[0014] Optionally, the axis of the first groove is arranged parallel to the axis of the third groove, and there is a height difference between the first groove and the third groove; the trajectory of the second groove is a straight line trajectory or a circular arc trajectory.

[0015] Optionally, the first sealing cover includes a first connecting portion, a second connecting portion, and a bent portion; the first connecting portion is connected to the annular workpiece; the inner sidewall of the first connecting portion serves as a first inner sidewall and is provided with the exhaust groove;

[0016] The second connecting part is connected to the second sealing cover; the bent part is arranged in an arc and extends obliquely toward the shaft;

[0017] The first space is formed between the bent portion, the shaft, and the universal joint.

[0018] Optionally, the second sealing cover includes a second sealing cover body and a third connecting portion; the third connecting portion is connected to the end of the second sealing cover body and detachably connected to the second connecting portion; the third connecting portion is sleeved on the outside of the second connecting portion;

[0019] The second sealing cover body is located outside the shaft, and a second space is formed between the second sealing cover body and the shaft, the second space being connected to the exhaust groove.

[0020] Optionally, the sealing cover assembly further includes a third sealing cover, which is connected to the second sealing cover via a splined sleeve;

[0021] The first sealing cover, the second sealing cover, and the third sealing cover are arranged sequentially along the axial direction of the shaft.

[0022] The third sealing cover and the shaft form a third space, and the third space communicates with the second space along the axial direction of the shaft.

[0023] Optionally, the spline sleeve is fitted onto the outside of the shaft and has a gap between it and the shaft; the gap connects the second space and the third space along the axial direction of the shaft.

[0024] To achieve the above objectives, the present invention provides the following technical solution: a drive shaft device for a vehicle, including the aforementioned sealing cover assembly.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This utility model provides a sealing cover assembly and a vehicle drive shaft device. The annular workpiece module includes an annular workpiece, a universal joint, and a shaft. The universal joint is built into the annular workpiece. The shaft passes through the annular workpiece and is inserted into the mounting hole of the universal joint. A first sealing cover is disposed between the annular workpiece and the shaft and connected to the end of the annular workpiece. The first sealing cover is sleeved on the outside of the shaft and has a first inner sidewall, which is arranged opposite to the circumferential sidewall of the shaft. The first inner sidewall has an exhaust groove. The exhaust groove connects the first sealing cover and the first space formed by the annular workpiece. A second sealing cover is connected to the first sealing cover and sleeved on the outside of the shaft. A second space is formed between the second sealing cover and the shaft. The exhaust groove connects the first space and the second space to discharge the gas in the first space, so that the gas in the first space can flow to the second space through the exhaust groove, avoiding gas concentration in the first space, preventing the first sealing cover from bulging due to excessive gas pressure, and extending the service life of the first sealing cover. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0029] Figure 1 A cross-sectional view of a sealing cover assembly according to an embodiment of this application is shown.

[0030] Figure 2 It shows Figure 1 A magnified view of a portion of point A in the middle.

[0031] Figure 3 A schematic diagram of the first sealing cover of a sealing cover assembly according to an embodiment of this application is shown.

[0032] Figure 4 It shows Figure 3 A magnified view of a section at point B.

[0033] Figure 5 A cross-sectional view of the second sealing cover of a sealing cover assembly according to one embodiment of this application is shown.

[0034] Figure Labels

[0035] 100. Sealing cover assembly;

[0036] 10. Circular workpiece module; 11. Circular workpiece; 11a. First space; 12. Universal joint; 13. Shaft;

[0037] 20. First sealing cover; 21. First inner sidewall; 211. Exhaust groove; 2111. Groove portion; 21111. First groove portion; 21112. Second groove portion; 21113. Third groove portion; 22. First connecting portion; 23. Second connecting portion; 24. Bending portion;

[0038] 30. Second sealing cover; 30a. Second space; 31. Main body of the second sealing cover; 32. Third connecting part;

[0039] 40. Third sealing cover; 40a. Third space;

[0040] 50. Splined cylinder; 50a. Gap. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] Please refer to the attached document. Figures 1-5 This application provides a sealing cover assembly 100 for sealing the annular workpiece module 10.

[0043] Please refer to the attached document. Figures 1-5 In this embodiment, the sealing cover assembly 100 includes an annular workpiece module 10, a first sealing cover 20, and a second sealing cover 30. The annular workpiece module 10 includes an annular workpiece 11, a universal joint 12, and a shaft 13. The universal joint 12 is built into the annular workpiece 11. The shaft 13 passes through the annular workpiece 11 and is inserted into the mounting hole of the universal joint 12. The first sealing cover 20 is disposed between the annular workpiece 11 and the shaft 13 and is connected to the end of the annular workpiece 11. The first sealing cover 20 is sleeved on the outside of the shaft 13. The first sealing cover 20 has a first inner sidewall 21, which is arranged opposite to the peripheral sidewall of the shaft 13. An exhaust groove 211 is provided; the exhaust groove 211 connects the first sealing cover 20 and the annular workpiece 11 to form a first space 11a; the second sealing cover 30 is connected to the first sealing cover 20 and sleeved on the outside of the shaft 13, and a second space 30a is formed between the second sealing cover 30 and the shaft 13. The exhaust groove 211 connects the first space 11a and the second space 30a to discharge the gas in the first space 11a, so that the gas in the first space 11a can flow to the second space 30a through the exhaust groove 211, avoid the gas from accumulating in the first space 11a, prevent the first sealing cover 20 from bulging due to excessive gas pressure, and extend the service life of the first sealing cover 20.

[0044] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the annular workpiece module 10 includes an annular workpiece 11, a universal joint 12, and a shaft 13; the universal joint 12 is built into the annular workpiece 11; the shaft 13 passes through the annular workpiece 11 and is inserted into the mounting hole of the universal joint 12.

[0045] The first sealing cover 20 is disposed between the annular workpiece 11 and the shaft 13, and is connected to the end of the annular workpiece 11. The first sealing cover 20 is sleeved on the outside of the shaft 13 so that the first sealing cover 20 can seal between the annular workpiece 11 and the shaft 13, ensuring the sealing effect between the annular workpiece 11 and the shaft 13. The first sealing cover 20 is provided with a first inner sidewall 21, which is arranged opposite to the peripheral sidewall of the shaft 13. The first inner sidewall 21 is provided with an exhaust groove 211. The exhaust groove 211 connects the first space 11a formed by the first sealing cover 20 and the annular workpiece 11 so that the gas in the first space 11a can flow to the first sealing cover 20.

[0046] The second sealing cover 30 is connected to the first sealing cover 20 and is sleeved on the outside of the shaft 13. A second space 30a is formed between the second sealing cover 30 and the shaft 13. The exhaust groove 211 connects the first space 11a and the second space 30a to discharge the gas in the first space 11a. This allows the gas in the first space 11a to flow to the second space 30a through the exhaust groove 211, preventing the gas from accumulating in the first space 11a and preventing the first sealing cover 20 from bulging due to excessive gas pressure, thus extending the service life of the first sealing cover 20.

[0047] Please refer to the attached document. Figures 1-4 In this embodiment, the exhaust groove 211 is recessed in the first inner sidewall 21. The exhaust groove 211 is disposed on one side of the first space 11a along the axial direction of the shaft 13. One end of the exhaust groove 211 is connected to the first space 11a, and the other end of the exhaust groove 211 is connected to the second space 30a. Gas generated in the first space 11a is discharged to the second space 30a. Since the exhaust groove 211 is disposed along the axial direction of the shaft 13, gas can flow smoothly along this direction, avoiding gas concentration in the first space 11a, preventing the first sealing cover 20 from bulging due to excessive gas pressure, and extending the service life of the first sealing cover 20.

[0048] Please refer to the attached document. Figures 1-4 In this embodiment, the exhaust groove 211 includes multiple recessed portions 2111. These recessed portions 2111 are formed along the axial direction of the first sealing cover 20 on the first inner sidewall 21 and are interconnected, so that the multiple recessed portions 2111 form a continuous exhaust channel. Gas can flow smoothly between the multiple recessed portions, thereby more efficiently exhausting the gas in the first space 11a. The total volume and cross-sectional area of ​​the multiple recessed portions 2111 are larger than that of a single exhaust groove 211, enabling faster gas exhaust and reducing the gas accumulation time in the first space 11a.

[0049] Please refer to the attached document. Figures 1-4In this embodiment, the plurality of groove portions 2111 include a first groove portion 21111, a second groove portion 21112, and a third groove portion 21113; the second groove portion 21112 is located between the first groove portion 21111 and the third groove portion 21113, and communicates with the first groove portion 21111 and the third groove portion 21113; the second groove portion 21112 and the first groove portion 21111 form a transition connection structure, and the second groove portion 21112 and the third groove portion 21113 also form a transition connection structure, so as to facilitate The first groove 21111, the second groove 21112, and the third groove 21113 are connected. The transition connection structure can prevent abrupt flow of gas between the first groove 21111, the second groove 21112, and the third groove 21113, thereby reducing the generation of eddies. Eddies can cause unstable gas flow and increase energy loss. This ensures that the gas is evenly distributed between the first groove 21111, the second groove 21112, and the third groove 21113, and avoids local gas accumulation or poor flow.

[0050] Please refer to the attached document. Figures 1-4 In this embodiment, the axis of the first groove 21111 is arranged parallel to the axis of the third groove 21113, and there is a height difference between the first groove 21111 and the third groove 21113 to facilitate the flow of gas by gravity or pressure difference. During the flow, the gas will naturally flow from high to low. The trajectory of the second groove 21112 is a straight line or a circular arc. When the trajectory of the second groove 21112 is a straight line, the straight line can reduce the resistance of gas flow. When the trajectory of the second groove 21112 is a circular arc, the circular arc can guide the gas to turn smoothly, reducing eddies and local resistance.

[0051] Please refer to the attached document. Figures 1-4 In this embodiment, the first sealing cover 20 includes a first connecting portion 22, a second connecting portion 23, and a bending portion 24. The first connecting portion 22 is connected to the annular workpiece 11 so that the first sealing cover 20 can be fixed and sealed to the annular workpiece 11 through the first connecting portion 22. The inner sidewall of the first connecting portion 22 serves as the first inner sidewall 21 and is provided with an exhaust groove 211 to guide gas flow. The second connecting portion 23 is connected to the second sealing cover 30 to further enhance the sealing effect. The bending portion 24 is arranged in an arc and extends obliquely toward the shaft 13, increasing the sealing contact area and sealing effect. A first space 11a is formed between the bending portion 24, the shaft 13, and the universal joint 12. The first space 11a can accommodate gas and plays a buffering and containing role.

[0052] Please refer to the attached document. Figure 1 and 5In this embodiment, the second sealing cover 30 includes a second sealing cover body 31 and a third connecting portion 32. The third connecting portion 32 is connected to the end of the second sealing cover body 31 and detachably connected to the second connecting portion 23. The third connecting portion 32 is sleeved on the outside of the second connecting portion 23 so that the third connecting portion 32 can connect to or detach from the second connecting portion 23, thereby facilitating the connection or detachment of the second sealing cover 30 from the first sealing cover 20. The second sealing cover body 31 is located outside the shaft 13, and a second space 30a is formed between the second sealing cover body 31 and the shaft 13. The second space 30a communicates with the exhaust groove 211 so that the gas in the first space 11a can flow to the second space 30a through the exhaust groove 211, ensuring the exhaust effect of the gas in the first space 11a.

[0053] Please refer to the attached document. Figure 1 In this embodiment, the sealing cover assembly 100 further includes a third sealing cover 40, which is connected to the second sealing cover 30 via a splined cylinder 50, ensuring a sealing effect between the shaft 13 and the splined cylinder 50. The first sealing cover 20, the second sealing cover 30, and the third sealing cover 40 are arranged sequentially along the axial direction of the shaft 13. The third sealing cover 40 and the shaft 13 form a third space 40a, which communicates with the second space 30a along the axial direction of the shaft 13, so that gas in the second space 30a can flow to the third space 40a, avoiding gas concentration in the second space 30a, preventing the second sealing cover 30 from bulging due to excessive gas pressure, and extending the service life of the second sealing cover 30.

[0054] Please refer to the attached document. Figure 1 In this embodiment, the splined sleeve 50 is sleeved on the outside of the shaft 13 and has a gap 50a between it and the shaft 13. The gap 50a connects the second space 30a and the third space 40a along the axial direction of the shaft 13, so that the third space 40a can be connected to the second space 30a through the gap 50a, thereby facilitating the flow of gas in the second space 30a to the third space 40a through the gap 50a, so as to discharge the gas in the second space 30a.

[0055] In a second embodiment, a vehicle driveshaft assembly includes a sealing cover assembly 100. The vehicle driveshaft assembly, together with a gearbox and drive axle, transmits engine power to the wheels, generating driving force for the vehicle. The sealing cover assembly 100 is part of the vehicle driveshaft assembly. In this case, the sealing cover assembly 100 includes an annular workpiece module 10, a first sealing cover 20, and a second sealing cover 30. The annular workpiece module 10 includes an annular workpiece 11, a universal joint 12, and a shaft 13. The universal joint 12 is built into the annular workpiece 11. The shaft 13 passes through the annular workpiece 11 and is inserted into the mounting hole of the universal joint 12. The first sealing cover 20 is disposed between the annular workpiece 11 and the shaft 13 and connected to the end of the annular workpiece 11. The first sealing cover 20 is sleeved on the outside of the shaft 13. The cover 20 is provided with a first inner sidewall 21, which is arranged opposite to the peripheral sidewall of the shaft 13. The first inner sidewall 21 is provided with an exhaust groove 211. The exhaust groove 211 connects the first sealing cover 20 and the first space 11a formed by the annular workpiece 11. The second sealing cover 30 is connected to the first sealing cover 20 and sleeved on the outside of the shaft 13. A second space 30a is formed between the second sealing cover 30 and the shaft 13. The exhaust groove 211 connects the first space 11a and the second space 30a to discharge the gas in the first space 11a, so that the gas in the first space 11a can flow to the second space 30a through the exhaust groove 211, avoiding the gas from accumulating in the first space 11a, preventing the first sealing cover 20 from bulging due to excessive gas pressure, and extending the service life of the first sealing cover 20.

[0056] Compared with the prior art, the beneficial effects of this utility model are:

[0057] This utility model provides a sealing cover assembly 100 and a vehicle drive shaft device. The annular workpiece module 10 includes an annular workpiece 11, a universal joint 12, and a shaft 13. The universal joint 12 is built into the annular workpiece 11. The shaft 13 passes through the annular workpiece 11 and is inserted into the mounting hole of the universal joint 12. A first sealing cover 20 is disposed between the annular workpiece 11 and the shaft 13 and is connected to the end of the annular workpiece 11. The first sealing cover 20 is sleeved on the outside of the shaft 13. The first sealing cover 20 has a first inner sidewall 21, which is arranged opposite to the peripheral sidewall of the shaft 13. The first inner sidewall 21 has an exhaust groove 211. The exhaust groove 211 connects the first sealing cover 20 and the annular workpiece 11 to form a first space 11a; the second sealing cover 30 is connected to the first sealing cover 20 and sleeved on the outside of the shaft 13. A second space 30a is formed between the second sealing cover 30 and the shaft 13. The exhaust groove 211 connects the first space 11a and the second space 30a to discharge the gas in the first space 11a, so that the gas in the first space 11a can flow to the second space 30a through the exhaust groove 211, avoiding the gas from accumulating in the first space 11a, preventing the first sealing cover 20 from bulging due to excessive gas pressure, and extending the service life of the first sealing cover 20.

[0058] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A seal cover assembly, characterized by, include: The ring-shaped workpiece module includes a ring-shaped workpiece, a universal joint, and a shaft. The universal joint is built into the annular workpiece; The shaft passes through the annular workpiece and is inserted into the mounting hole of the universal joint; A first sealing cover is disposed between the annular workpiece and the shaft, and connected to the end of the annular workpiece; the first sealing cover is sleeved on the outside of the shaft, and the first sealing cover has a first inner sidewall, which is arranged opposite to the peripheral sidewall of the shaft, and the first inner sidewall has an exhaust groove; the exhaust groove connects the first space formed by the first sealing cover and the annular workpiece. The second sealing cover is connected to the first sealing cover and sleeved on the outside of the shaft. A second space is formed between the second sealing cover and the shaft. The exhaust groove connects the first space and the second space to exhaust the gas in the first space.

2. The sealing cover assembly according to claim 1, characterized in that, The exhaust groove is recessed in the first inner sidewall; The exhaust groove is disposed on one side of the first space along the axis of the shaft, one end of the exhaust groove is connected to the first space, and the other end of the exhaust groove is connected to the second space.

3. The seal cover assembly of claim 2, wherein, The exhaust groove includes multiple recessed portions; the multiple recessed portions are formed along the axial direction of the first sealing cover on the first inner sidewall and are interconnected.

4. The seal cover assembly of claim 3, wherein, The plurality of groove portions include a first groove portion, a second groove portion, and a third groove portion; The second groove is located between the first groove and the third groove, and connects the first groove and the third groove; The second groove portion is connected to the first groove portion in a transitional connection structure, and the second groove portion is connected to the third groove portion in a transitional connection structure.

5. The seal cover assembly of claim 4, wherein, The axis of the first groove is arranged parallel to the axis of the third groove, and there is a height difference between the first groove and the third groove; the trajectory of the second groove is a straight line or a circular arc.

6. The seal cover assembly of claim 1, wherein, The first sealing cover includes a first connecting part, a second connecting part, and a bent part; the first connecting part is connected to the annular workpiece; the inner sidewall of the first connecting part serves as the first inner sidewall and is provided with the exhaust groove; The second connecting part is connected to the second sealing cover; the bent part is arranged in an arc and extends obliquely toward the shaft; The first space is formed between the bent portion, the shaft, and the universal joint.

7. The seal cover assembly of claim 6, wherein, The second sealing cover includes a second sealing cover body and a third connecting part; the third connecting part is connected to the end of the second sealing cover body and is detachably connected to the second connecting part; the third connecting part is sleeved on the outside of the second connecting part; The second sealing cover body is located outside the shaft, and a second space is formed between the second sealing cover body and the shaft, the second space being connected to the exhaust groove.

8. The seal cover assembly of claim 7, wherein, The sealing cover assembly further includes a third sealing cover, which is connected to the second sealing cover via a splined tube; The first sealing cover, the second sealing cover, and the third sealing cover are arranged sequentially along the axial direction of the shaft. The third sealing cover forms a third space with the shaft, and the third space communicates with the second space along the axial direction of the shaft.

9. The seal cover assembly of claim 8, wherein, The spline sleeve is sleeved outside the shaft and has a gap between the spline sleeve and the shaft; the gap communicates the second space and the third space along the axial direction of the shaft.

10. A propeller shaft arrangement for a vehicle, characterized in that The sealing cover assembly comprises the sealing cover assembly according to any one of claims 1 to 9.

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