Novel anti-leakage sealing cover
By designing a labyrinthine sealing cover, the problem of steering bearing leakage was solved, achieving multi-layer sealing protection for the steering device and improving its safety and stability.
Patent Information
- Application Number
- CN202422658669.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The existing sealing cover cannot effectively prevent leakage from the steering shaft and steering bearing, allowing water, gravel, dust and other contaminants to enter the bearing, affecting bearing lubrication and stability, and posing a safety hazard.
A novel leak-proof sealing cover was designed, which uses a labyrinth-structured sealing connection plate and snap-fit edge, combined with rubber material, to achieve multi-layer sealing protection and prevent lubricating oil leakage and contaminants from entering the steering bearing.
It effectively prevents lubricating oil leakage and contaminants from entering the steering bearing, improves the flexibility and stability of the steering device, extends its service life, and reduces safety hazards.
Smart Images

Figure CN223549804U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing cap design technology, and more specifically, to a novel leak-proof sealing cap. Background Technology
[0002] Two-wheeled vehicles control their forward direction via a steering shaft and steering bearing. Existing sealing covers fail to provide adequate protection for the steering shaft and bearings, leaving small gaps that allow water, sand, and dust to enter. This leads to insufficient lubrication, water ingress and rust, and sand entering the bearings, causing the handlebars to jam or seize, potentially resulting in traffic accidents or difficulty riding. Furthermore, there is a risk of lubricating oil seeping into the steering assembly, causing steering resistance and affecting the stability of the steering component connections, posing significant safety hazards during the use of two-wheeled vehicles. Therefore, a novel leak-proof sealing cover is proposed. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address at least one of the aforementioned problems, this utility model first provides a novel leak-proof sealing cap with a simple structure that provides leak-proof protection for both the inner and outer sides of the steering column and the connection end of the vehicle pipe, ensuring the flexibility and stability of the steering device, effectively extending the service life of the steering device, and improving the safety of the steering components.
[0005] (II) Technical Solution
[0006] To solve the aforementioned technical problem, this utility model provides a novel leak-proof sealing cap, comprising a sealing connecting plate, an outer sealing plate, and an outer lip. The outer sealing plate is provided on the outer side of the sealing connecting plate. The outer sealing plate has an outer lip extending downward from the bottom outer edge, which wraps around the top sleeve of the steering connection end. The inner side of the outer sealing plate has a connecting edge. The bottom of the connecting edge has a first lip that is embedded in the external connecting groove of the steering connection end. The outer end of the first lip has a first ridge that engages with the outer edge of the external connecting groove. The inner end of the first lip has a second ridge that engages with the inner edge of the external connecting groove. The bottom of the outer end of the sealing connecting plate has a second lip that is embedded in the internal connecting groove of the steering connection end. The bottom of the second lip has a third ridge that contacts the bottom of the internal connecting groove.
[0007] Furthermore, a first connecting slot is provided between the outer lip and the connecting edge, and the outer edge of the top of the first connecting slot is set higher than the inner edge of the top of the first connecting slot.
[0008] Furthermore, a second connecting slot is provided between the connecting edge and the second lip edge, and the top surface of the second connecting slot is a planar structure.
[0009] Furthermore, the setting angle between the outer lip and the outer sealing plate is set according to the specifications of the top connecting ring of the specific steering connection end.
[0010] Furthermore, the top of the inner cavity of the outer sealing plate is provided with two sets of external metal skeletons, the outer sealing plate and the sealing connecting plate are provided with an inner groove, the bottom of the inner groove is provided with two sets of intermediate metal skeletons, and the top of the inner cavity of the sealing connecting plate is provided with two sets of internal metal skeletons.
[0011] Furthermore, the inner cavity of the connecting edge is provided with two sets of vertical metal frames.
[0012] Furthermore, the top of the inner wall of the sealing connection plate is provided with a snap-fit protrusion.
[0013] Furthermore, the bottom of the outer sealing plate is set at the top of the steering connection end through the first connecting groove, the bottom of the steering connection end is provided with a steering column, the sealing connection plate is fixed to the steering bearing by the snap-fit protrusion, the steering bearing is provided with a connecting rod, and the top of the connecting rod is provided with a vehicle tube head.
[0014] Furthermore, the top connecting wall of the steering bearing is provided with an anti-disengagement locking groove at the corresponding locking protrusion.
[0015] (III) Beneficial Effects
[0016] This utility model provides a novel leak-proof sealing cap with an irregular labyrinth structure. Utilizing the properties of rubber combined with the shape of the steering structure, it provides comprehensive protection for the steering bearing and steering assembly. The sealing connection plate and snap-fit edges create a first layer of sealing protection for the top of the steering bearing, preventing lubricating oil leakage and preventing external contaminants from entering the bearing. The sealing cap then engages with the top sleeve of the steering connection end via a first connecting groove, effectively sealing the steering connection end and providing a second layer of sealing protection for the steering bearing. This prevents external contaminants from entering the bearing through gaps in the connection end. The first and second lips seal against the steering connection end, providing a third layer of sealing protection, preventing environmental contaminants from entering the bearing. This design organically combines the advantages of the sealing cap with the steering assembly structure, reducing safety hazards for customers' products. The sealing cap is easy to install, aesthetically pleasing, and has a long service life, effectively improving its practicality. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the leak-proof sealing cap according to an embodiment of the present utility model;
[0018] Figure 2This is a structural schematic diagram of the leak-proof sealing cap from another angle according to an embodiment of the present utility model;
[0019] Figure 3 This is a vertical sectional view of the leak-proof sealing cap according to an embodiment of the present utility model;
[0020] Figure 4 This is a schematic diagram of the installation structure of the leak-proof sealing cap according to an embodiment of the present utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1 is a sealing connection plate, 2 is an outer sealing plate, 3 is an outer lip, 4 is a first connecting slot, 5 is a connecting edge, 6 is a first ridge, 7 is a first lip, 8 is a second ridge, 9 is a second connecting slot, 10 is a second lip, 11 is a third ridge, 12 is an internal metal frame, 13 is a middle metal frame, 14 is an external metal frame, 15 is a vertical metal frame, 16 is a snap-fit protrusion, 101 is a steering column, 102 is a steering connection end, and 103 is a vehicle tube head. Detailed Implementation
[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0024] See Figures 1 to 4This utility model provides a novel leak-proof sealing cap, including a sealing connecting plate 1, an outer sealing plate 2, and an outer lip 3. The outer sealing plate 2 is provided on the outer side of the sealing connecting plate 1. The outer edge of the bottom of the outer sealing plate 2 is provided with an outer lip 3 that wraps around the top sleeve of the turning connection end 102 and extends downward. The inner side of the outer sealing plate 2 is provided with a connecting edge 5. The bottom of the connecting edge 5 is provided with a first lip 7 that is embedded in the external connecting groove of the turning connection end 102. The outer end of the first lip 7 is provided with a first ridge 6 that engages with the outer edge of the external connecting groove. The inner end of the first lip 7 is provided with a second ridge 8 that engages with the inner edge of the external connecting groove. The bottom of the outer end of the sealing connecting plate 1 is provided with a second lip 10 that is embedded in the internal connecting groove of the turning connection end 102. The bottom of the second lip 10 is provided with a second lip 10. A third ridge 11 is provided that contacts the bottom of the built-in connecting groove. The anti-leakage sealing cover establishes a connection with the rotating bearing through the sealing connecting plate 1. The inner cavity of the rotating bearing extends the connecting rod into the steering connection end 102, establishing a connection between the vehicle pipe head 103 and the steering connection end 102. The sealing connecting plate 1 is set on the top outer wall of the steering bearing, effectively preventing the lubricating oil on the rotating bearing from seeping into the steering assembly, ensuring the normal operation of the rotating bearing. The outer sealing plate 2, in conjunction with the outer lip 3, achieves a connection with the top retaining ring set on the steering connection end 102, realizing the assembly of the edge of the sealing cover with the steering connection end 102. The connecting part and the outer lip 3 achieve the waterproof and mud-proof function of the steering connection end 102 and the interior of the steering column 101, realizing the sealing function of the sealing cover.
[0025] participate Figure 1 and Figure 2 The sealing cover is provided with a first lip 7 to establish a mutual fitting connection with the external connecting groove, and with the first ridge 6 and the second ridge 8 abutting against the edge of the external connecting groove, the sealing cover and the external connecting groove are fixedly installed; the sealing cover is provided with a second lip 10 to establish a mutual fitting connection with the internal connecting groove, and with the third ridge 11 abutting against the internal connecting groove body, the sealing cover abuts against the two sets of connecting grooves of the steering connecting end 102 through the first lip 7 and the second lip 10, effectively achieving stable installation with the steering connecting end 102.
[0026] A first connecting groove 4 is provided between the outer lip 3 and the connecting edge 5. The outer edge of the top of the first connecting groove 4 is higher than the inner edge of the top of the first connecting groove 4. The sealing cover is fixed to the connection of the top sleeve of the steering connection end 102 through the first connecting groove 4. The top of the groove of the steering connection end 102 extends outward, which makes it easy for the top sleeve of the steering connection end 102 to be gradually embedded into the first connecting groove 4 from the outside to the inside, effectively preventing external dust and mud from entering the steering assembly and achieving sealing protection for the steering assembly.
[0027] A second connecting groove 9 is provided between the connecting edge 5 and the second lip edge 10. The top surface of the second connecting groove 9 is a flat structure. A snap ring is provided at the turning connecting end 102 corresponding to the second connecting groove 9. The second connecting groove 9 and the snap ring are connected to each other to further ensure the firmness of the connection between the sealing cover and the turning connecting end 102, prevent the sealing cover from falling off, further prevent mud or oil leakage, and ensure the structural performance of the sealing cover.
[0028] The setting angle between the outer lip 3 and the outer sealing plate 2 is set according to the specifications of the top connecting ring of the specific steering connection end 102. The extension angle and width of the outer lip 3 are not specifically set, but its extension angle is specifically adjusted according to the specifications of the top connecting ring of the steering connection end 102, so that the sealing cover can be used for connecting and sealing various steering connection ends 102 of different specifications.
[0029] See Figure 3 The outer sealing plate 2 has two sets of external metal skeletons 14 at the top of its inner cavity. There is an indented groove between the outer sealing plate 2 and the sealing connecting plate 1. There are two sets of intermediate metal skeletons 13 below the indented groove. There are two sets of internal metal skeletons 12 at the top of the inner cavity of the sealing connecting plate 1. The top of the outer sealing plate 2 is embedded in the bottom connecting edge of the steering bearing by setting an indented groove, which increases the limiting stability of the connection with the steering bearing. The external metal skeletons 14 and intermediate metal skeletons 13 enhance the strength of the structural end of the outer sealing plate 2. The internal metal skeletons 12 increase the structural performance of the end of the sealing connecting plate 1. This can prevent the overall structural performance of the sealing cover from being changed by factors such as extrusion and rotation, and effectively extend the service life of the sealing cover.
[0030] The inner cavity of the connecting edge 5 is provided with two sets of vertical metal skeletons 15. The vertical metal skeletons 15 effectively enhance the structural performance of the connecting edge 5, enhance the structural strength of the connecting edge 5 and the first lip edge 7, improve the limiting strength of the top sleeve of the steering connecting end 102 embedded in the first connecting slot 4 and the snap ring embedded in the second connecting slot 9, prevent the connecting structure from coming out, and enhance the connection strength between the sealing cover and the steering connecting end 102.
[0031] The top of the inner wall of the sealing connection plate 1 is provided with a snap-fit protrusion 16. The top edge of the sealing connection plate 1 is embedded into the top connecting wall of the steering bearing by setting the snap-fit protrusion 16, which effectively avoids the offset between the sealing cover and the steering bearing, ensures the accuracy of the connection between the two, and achieves waterproof and mud-proof protection for the inside of the steering bearing by the connection end.
[0032] See Figure 4The bottom of the outer sealing plate 2 is set at the top of the steering connection end 102 through the first connecting groove 4. The bottom of the steering connection end 102 is provided with a steering column 101. The sealing connection plate 1 is fixed to the steering bearing by the snap-fit protrusion 16. The steering bearing is provided with a connecting rod. The top of the connecting rod is provided with a tube head 103. The outer sealing plate 2 cooperates with the outer lip 3 to establish a connection with the top sleeve provided at the top of the steering connection end 102. That is, the top sleeve is set in the first connecting groove 4. The top sleeve is used to complete the connection and sealing of the steering assembly. The bottom of the steering connection end 102 is connected to the steering column 101. The bottom of the tube head 103 embeds the connecting rod into the steering column 101, and the tube head 103 and the steering bearing are limited and adjusted. The connection between the steering bearing and the sealing cover is provided with an anti-detachment component and a sealing component, which can effectively prevent the lubricating oil in the steering bearing from seeping out and effectively ensure the normal operation of the steering assembly.
[0033] The top connecting wall of the steering bearing is provided with an anti-disengagement locking groove at the corresponding locking protrusion 16. The top connecting wall of the steering bearing establishes a locking with the locking protrusion 16 through the anti-disengagement locking groove, so as to prevent the sealing cover from falling off the steering bearing.
[0034] This utility model provides a novel leak-proof sealing cap, which is fitted onto the steering connection end 102. The steering connection end 102 and the steering column 101 are integrally formed, thus establishing the connection between the sealing cap and the steering column 101. The steering bearing is placed inside the sealing connection plate 1, establishing the connection between the steering column 101 and the steering bearing. At this time, the connecting rod provided at the bottom of the vehicle tube head 103 extends into the inner cavity of the steering connection end 102 and the steering column 101, realizing the sealing protection of the steering bearing and the gap of the connection end by the sealing cap, avoiding water seepage, sand seepage or oil seepage, effectively achieving the protection of the steering assembly, and extending the service life of the steering assembly.
[0035] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.
Claims
1. A novel leak-proof sealing cap, characterized in that, The device includes a sealing connecting plate (1), an outer sealing plate (2), and an outer lip (3). The outer sealing plate (2) is provided on the outer side of the sealing connecting plate (1). The outer sealing plate (2) has an outer lip (3) that wraps around the top sleeve of the steering connection end (102) and extends downward. The inner side of the outer sealing plate (2) has a connecting edge (5). The bottom of the connecting edge (5) has a first lip (7) that is embedded in the external connecting groove of the steering connection end (102). The outer end of the first lip (7) has a first ridge (6) that engages with the outer side of the external connecting groove. The inner end of the first lip (7) has a second ridge (8) that engages with the inner side of the external connecting groove. The bottom of the outer end of the sealing connecting plate (1) has a second lip (10) that is embedded in the internal connecting groove of the steering connection end (102). The bottom of the second lip (10) has a third ridge (11) that contacts the bottom of the internal connecting groove.
2. The novel leak-proof sealing cap according to claim 1, characterized in that, The outer lip (3) and the connecting edge (5) are provided with a first connecting slot (4), and the top outer edge of the first connecting slot (4) is set higher than the top inner edge of the first connecting slot (4).
3. The novel leak-proof sealing cap according to claim 1, characterized in that, The second connecting groove (9) is provided between the connecting edge (5) and the second lip edge (10), and the top surface of the second connecting groove (9) is a planar structure.
4. The novel leak-proof sealing cap according to claim 1, characterized in that, The setting angle between the outer lip (3) and the outer sealing plate (2) is set according to the specifications of the top connecting ring of the specific steering connection end (102).
5. A novel leak-proof sealing cap according to claim 1, characterized in that, The outer sealing plate (2) has two sets of external metal skeletons (14) at the top of its inner cavity. There is an inner groove between the outer sealing plate (2) and the sealing connecting plate (1). There are two sets of intermediate metal skeletons (13) below the inner groove. There are two sets of internal metal skeletons (12) at the top of the inner cavity of the sealing connecting plate (1).
6. A novel leak-proof sealing cap according to claim 1, characterized in that, The inner cavity of the connecting edge (5) is provided with two sets of vertical metal frames (15).
7. A novel leak-proof sealing cap according to claim 1, characterized in that, The sealing connection plate (1) has a snap-fit protrusion (16) on the top of its inner wall.
8. A novel leak-proof sealing cap according to claim 7, characterized in that, The bottom of the outer sealing plate (2) is set on the top of the steering connection end (102) through the first connecting groove (4). The bottom of the steering connection end (102) is provided with a steering column (101). The sealing connection plate (1) is fixed to the steering bearing by the snap-fit protrusion (16). The steering bearing is provided with a connecting rod. The top of the connecting rod is provided with a vehicle tube head (103).
9. A novel leak-proof sealing cap according to claim 8, characterized in that, The top connecting wall of the steering bearing is provided with an anti-disengagement locking groove at the corresponding locking protrusion (16).