Waterproof axle sleeve for flower drum

Abstract

The utility model belongs to the technical field of flower drum shaft sleeve, and disclose a kind of flower drum waterproof shaft sleeve, including shaft sleeve main body, the both ends of shaft sleeve main body are provided with waterproof assembly, the waterproof assembly includes the fixed ring being located at the outside of shaft sleeve main body, the fixed ring is connected with waterproof cover by fastener, the through-hole for connecting shaft is passed through and is opened in the waterproof cover, the shaft sleeve main body includes tubular main body, the tubular main body is fixedly connected with the connecting flange of the position of the outside near both ends, the fixed hole is opened in the connecting flange, the recess for bearing fixation is opened in the both end inner wall of tubular main body, the recess inner wall is connected with the sealing sleeve of matching, waterproof assembly forms the multilayer sealing system of shielding+filling+coating, can effectively prevent moisture, impurity and enter the inside of shaft sleeve, avoid bearing corrosion, shaft sleeve wear, guarantee flower drum long-term stable rotation, prolong service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of hub bushings, specifically a waterproof hub bushing. Background Technology

[0002] The hub is the core rotating component of a bicycle wheel. Simply put, it is the key structure located at the center of the wheel, connecting the spokes to the frame. It is responsible for supporting the wheel and allowing it to rotate smoothly. The hub is located at the very center of the wheel, with a central axle running through it. Both ends are fixed to the front or rear fork of the frame, and the outer side is connected to the rim through the spokes, forming the core skeleton of the entire wheel. The hub bushing is an auxiliary component inside the bicycle hub, mainly used to reduce friction, assist in bearing positioning, or enhance structural stability. It is a "supporting" component in the hub rotation system.

[0003] Chinese Patent Application No. 202023009729.5 discloses a high-lifespan bicycle hub assembly, including a connecting shaft, a hub bushing, a first bearing, a second bearing, a first locking nut, a second locking nut, and a spoke fixing structure. The hub bushing is mounted on the connecting shaft via the first and second bearings and fixed by the first and second locking nuts. The spoke fixing structure is mounted on the hub bushing. The spoke fixing structure includes a first spoke fixing seat and a second spoke fixing seat, which are arranged opposite to each other. The spokes are fixed to the hub bushing of the hub assembly via the first and second spoke fixing seats of the spoke fixing structure, thereby avoiding wear between the spokes and the hub bushing, thus greatly improving the service life of the bicycle hub assembly and reducing maintenance costs.

[0004] However, the hub bushings in the aforementioned high-life bicycle hub assemblies lack a waterproof structure, allowing moisture and mud to easily penetrate. This can lead to corrosion of the bushings, bearings, axles, and other components, increasing rotational friction and making riding difficult and strenuous. At the same time, mud and sand can exacerbate component wear, causing increased gaps, abnormal noises, or shaking, affecting wheel stability, and ultimately shortening the hub's lifespan, increasing maintenance frequency and costs.

[0005] Therefore, a waterproof hub bushing is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background section, this utility model provides a water-resistant hub bushing, which has the advantages of effectively preventing water and dust intrusion and being easy to install and maintain.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-resistant hub bushing, comprising a bushing body, wherein water-resistant components are provided at both ends of the bushing body;

[0008] The waterproof component includes a fixing ring located on the outside of the bushing body. The fixing ring is connected to a waterproof cover by fasteners. The waterproof cover has a through hole for the connecting shaft to pass through.

[0009] Preferably, the bushing body includes a tubular body, and connecting flanges are fixedly connected to the outer side of the tubular body near both ends, with fixing holes provided on the connecting flanges.

[0010] Preferably, the inner walls at both ends of the tubular body are provided with grooves for fixing the bearings, and the inner walls of the grooves are connected with matching sealing sleeves.

[0011] Preferably, the waterproof cover is composed of a connecting ring and a cover body, the connecting ring is fixedly connected to the cover body, and the through hole is formed on the cover body.

[0012] Preferably, a sealing gasket is provided between the connecting ring and the fixing ring, and the sealing gasket, the fixing ring, and the connecting ring are all provided with interconnected through holes.

[0013] Preferably, the fastener consists of a bolt and a nut, with the bolt's shank threaded through a through hole to connect to the nut.

[0014] Preferably, a sleeve is fixedly connected to the outside of the fixing ring, and the sleeve covers the sealing gasket and the connecting ring.

[0015] Preferably, the ends of the sealing sleeves that are close to each other have an inwardly formed edge retaining edge, and the inner wall of the ends of the sealing sleeves that are far apart has a conical slope.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model waterproof component, through the coordinated design of a fixing ring, a waterproof cover, a sealing gasket, and a cover, forms a multi-layer sealing system of shielding, filling, and covering. The waterproof cover directly shields against the direct impact of external water flow and mud. The sealing gasket is embedded in the connection surface between the fixing ring and the waterproof cover, filling the assembly gap and blocking the path of water and dust penetration. The cover further covers the sealing gasket and the connecting ring, strengthening the sealing effect of key connection parts. It can effectively prevent water and impurities from entering the bushing, avoid bearing corrosion and bushing wear, ensure the long-term stable rotation of the hub, and extend its service life.

[0018] 2. The waterproof component of this utility model adopts a modular disassembly and standardized fastener design. The waterproof cover is disassembled into a connecting ring and a cover body, which is convenient for flexible adaptation according to the hub specifications. The fastener combination of through holes and bolts and nuts allows for quick alignment of the fixing ring, sealing gasket and waterproof cover during assembly, which greatly reduces the difficulty of installation. During maintenance, it is easy to disassemble and replace vulnerable parts such as sealing gaskets without complicated tools, thus improving maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the detachable structure of the waterproof component of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the bushing body of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0024] In the picture:

[0025] 1. Bushing body;

[0026] 11. Tubular body; 12. Connecting flange; 13. Fixing hole;

[0027] 2. Waterproof components;

[0028] 21. Fixing ring;

[0029] 22. Fasteners; 221. Bolts; 222. Nuts;

[0030] 23. Waterproof cover; 231. Connecting ring; 232. Cover body;

[0031] 24. Through hole; 25. Sealing gasket; 26. Perforation; 27. Enclosure;

[0032] 3. Groove;

[0033] 4. Sealing sleeve;

[0034] 41. Edge retaining wall; 42. Conical slope. Detailed Implementation

[0035] 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.

[0036] like Figures 1 to 5 As shown, this utility model provides a water-resistant hub bushing, including a bushing body 1, with water-resistant components 2 provided at both ends of the bushing body 1;

[0037] The waterproof component 2 includes a retaining ring 21 located on the outside of the bushing body 1. The retaining ring 21 provides a stable installation reference for the waterproof cover 23, ensuring accurate connection positioning. The retaining ring 21 is connected to the waterproof cover 23 by fasteners 22. The fasteners 22 are connected by bolts and nuts, which are convenient to disassemble and assemble, and facilitate the later maintenance and replacement of the waterproof cover 23. The waterproof cover 23 has a through hole 24 for the connecting shaft to pass through. The through hole 24 not only meets the requirements for the connecting shaft to pass through, but also uses the cover structure to block external water and dust, thus initially constructing a protective barrier.

[0038] Specifically, the bushing body 1 includes a tubular body 11. A connecting flange 12 is fixedly connected to the outer side of the tubular body 11 near both ends. The connecting flange 12 has a fixing hole 13. The connecting flange 12 and the fixing hole 13 facilitate assembly with other structures of the hub and improve the overall connection stability.

[0039] Furthermore, the inner walls at both ends of the tubular body 11 are provided with grooves 3 for fixing the bearings. The grooves 3 provide a limiting space for the bearings to prevent them from shifting during rotation and to ensure the rotational stability of the bushing. The inner wall of the grooves 3 is connected to a matching sealing sleeve 4. The sealing sleeve 4 fits into the grooves 3 to assist in the sealing of the bearings and at the same time enhances the wear resistance of the inner wall of the bushing.

[0040] Furthermore, the waterproof cover 23 is composed of a connecting ring 231 and a cover body 232. The connecting ring 231 is fixedly connected to the cover body 232, and the through hole 24 is opened on the cover body 232. The separate design of the connecting ring 231 and the cover body 232 can flexibly adapt to different hub connecting shaft sizes, improving the structural versatility.

[0041] It is worth noting that a sealing gasket 25 is provided between the connecting ring 231 and the fixing ring 21. The sealing gasket 25, the fixing ring 21, and the connecting ring 231 are all provided with interconnected through holes 26. The sealing gasket 25 fills the gap between the connecting ring 231 and the fixing ring 21, blocking the path of water and dust penetration. The alignment design of the through holes 26 ensures that the fastener 22 is installed smoothly.

[0042] It is worth noting that the fastener 22 consists of a bolt 221 and a nut 222. The bolt 221 passes through the through hole 24 and is threaded to the nut 222. The threaded connection between the bolt 221 and the nut 222 provides a stable tightening force and allows for easy adjustment of the preload according to sealing requirements.

[0043] It is worth mentioning that a cover 27 is fixedly connected to the outside of the fixing ring 21. The cover 27 covers the sealing gasket 25 and the connecting ring 231, further sealing the connection part, resisting external water and dust erosion, and improving sealing durability.

[0044] It is worth emphasizing that the end of the sealing sleeve 4 that is close to each other has an edge retainer 41 formed inward, and the inner wall of the end of the sealing sleeve 4 that is far away has a tapered slope 42. The edge retainer 41 provides axial limit for the bearing to prevent the bearing from moving during rotation, and the tapered slope 42 facilitates the bearing to be installed in the groove 3.

[0045] Working principle and process: When the hub waterproof bushing is working, the bearing is first inserted into the groove 3 of the tubular body 11 through the tapered slope 42 of the sealing sleeve 4. The edge retainer 41 forms an axial limit for the bearing. In the waterproof component 2, the fixing ring 21 provides the installation reference, the sealing washer 25 fills the gap between the connecting ring 231 and the fixing ring 21, and the cover 27 covers the two to further seal the connection. The bolt 221 of the fastener 22 passes through the through hole 24 and the through hole 26 of the waterproof cover 23 and cooperates with the nut 222 to tighten the waterproof cover 23. When the connecting shaft passes through the through hole 24 and drives the hub to rotate, the cover 232 of the waterproof cover 23 first blocks the external water and dust, the sealing washer 25 blocks the penetration path, and the cover 27 strengthens the protection. At the same time, the sealing sleeve 4 assists the bearing in sealing and stabilizing its position, together forming a multi-layer waterproof barrier to ensure that the bearing and other components inside the bushing operate in a clean and dry environment, reduce wear and corrosion, and ensure the smooth rotation and durability of the hub.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof hub sleeve for a flower drum, comprising a sleeve body (1), characterized in that: Waterproof components (2) are provided at both ends of the bushing body (1); The waterproof component (2) includes a fixing ring (21) located on the outside of the bushing body (1). The fixing ring (21) is connected to a waterproof cover (23) by a fastener (22). The waterproof cover (23) has a through hole (24) for the connecting shaft to pass through.

2. The waterproof hub sleeve according to claim 1, characterized in that: The bushing body (1) includes a tubular body (11), and a connecting flange (12) is fixedly connected to the outer side of the tubular body (11) near both ends. The connecting flange (12) has a fixing hole (13).

3. The waterproof hub sleeve according to claim 2, characterized in that: The inner walls of both ends of the tubular body (11) are provided with grooves (3) for fixing the bearings, and the inner walls of the grooves (3) are connected with matching sealing sleeves (4).

4. The hub waterproof bushing according to claim 1, characterized in that: The waterproof cover (23) is composed of a connecting ring (231) and a cover body (232). The connecting ring (231) is fixedly connected to the cover body (232), and the through hole (24) is opened on the cover body (232).

5. A water-resistant hub bushing according to claim 4, characterized in that: A sealing gasket (25) is provided between the connecting ring (231) and the fixing ring (21), and the sealing gasket (25), the fixing ring (21) and the connecting ring (231) are all provided with interconnected through holes (26).

6. A water-resistant hub bushing according to claim 5, characterized in that: The fastener (22) consists of a bolt (221) and a nut (222), with the bolt (221) threaded through a through hole (24) to connect to the nut (222).

7. A hub waterproof bushing according to claim 1, characterized in that: A cover (27) is fixedly connected to the outside of the fixing ring (21), and the cover (27) covers the sealing gasket (25) and the connecting ring (231).

8. A hub waterproof bushing according to claim 3, characterized in that: The sealing sleeves (4) have an edge retainer (41) formed on the inner side at the end that is close to each other, and a conical slope (42) is formed on the inner wall of the end that is far away from each other.

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