CN218267208U

CN218267208U - Bicycle hub sealing structure

Info

Publication number: CN218267208U
Application number: CN202221466532.0U
Authority: CN
Inventors: 袁峰
Original assignee: Shenzhen Ruibowen Bicycle Co ltd
Current assignee: Shenzhen Ruibowen Bicycle Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2023-01-10
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a bicycle flower-drum seal structure, it includes the drum body, sleeve and sealing washer, and drum body terminal surface is equipped with the adaptation chamber, and the sealing washer cover is established on the draw-in groove of telescopic adaptation portion, is equipped with the annular groove on the side cavity wall in adaptation chamber, is equipped with on the sealing washer to extend to the sealed claw that blocks in the annular groove and be equipped with the preceding chamber wall position that extends to the adaptation chamber. The sealing ring is arranged on the sleeve through the clamping groove, so that the positioning effect is good, the sealing ring is not easy to loosen and detach, the disassembly and the assembly are convenient, the deformation is not easy, and the service life of the sealing ring is prolonged; the sealing ring is provided with a blocking claw and a sealing claw to form a double sealing structure, so that the sealing effect is effectively improved; and through blocking claw contactless annular groove, effectively reduce frictional force, promote flower-drum pivoted smooth and easy nature, in addition, the opening in adaptation chamber is equipped with the extension, can block debris such as part rainwater and dust betterly to centrifugal force when utilizing the rotation throws away debris, further reduces the possibility that debris got into the drum internal, increase of service life.

Description

Bicycle hub sealing structure

Technical Field

The utility model relates to a bicycle flower-drum technical field, concretely relates to bicycle flower-drum seal structure.

Background

The hub is an important part of the bicycle for connecting the axle and the spokes, and the performance of the bicycle is directly affected by the quality of the hub. In the use process of the bicycle, the hub is also bound to be corroded by water, dust and other sundries, so that the problem of how to isolate the internal mechanism of the hub from the external environment is a constantly researched problem in the industry.

The sealing effect between the sleeve and the drum body of the bicycle hub seen in the market at present is unsatisfactory, impurities such as water, dust and the like easily enter the ratchet wheel of the drum body, the use performance of the hub is influenced, the service life of the hub is also shortened, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide a structural design is reasonable, sealed effectual bicycle flower-drum seal structure.

In order to achieve the above purpose, the utility model provides a technical scheme is: the utility model provides a bicycle flower-drum seal structure, its includes the drum body, sleeve and sealing washer, drum body terminal surface is equipped with the adaptation chamber, telescopic front portion be equipped with the adaptation portion of adaptation chamber looks adaptation, be equipped with in this adaptation portion with the draw-in groove of sealing washer looks adaptation, the sealing washer cover is established on the draw-in groove, correspond on the side chamber wall in adaptation chamber the position of sealing washer is equipped with the annular groove, be equipped with on the periphery wall of sealing washer and extend to block the claw in the annular groove, be equipped with on the preceding terminal surface of sealing washer and extend to the sealed claw of the preceding chamber wall position in adaptation chamber.

As an optimized proposal of the utility model, the sealing claw is contacted with the front cavity wall of the adaptive cavity, and the sealing effect is good.

As a preferred scheme of the utility model, the transversal right triangle that personally submits of annular groove. The blocking claw and the annular groove are provided with a fit clearance, namely the blocking claw is not contacted with the groove wall of the annular groove, so that the friction force is reduced, and the rotating smoothness of the hub is improved.

As a preferred scheme of the utility model, the opening edge in adaptation chamber is equipped with can outside axial extension, and will the sheathed extension of adaptation portion blocks debris such as partial rainwater and dust through the extension to utilize the centrifugal force when rotatory to throw debris away, effectively reduce the possibility that debris got into in the drum body. The V-shaped groove is arranged on the peripheral surface of the sealing ring, a certain amount of sundries can be stored, and the sundries can be further reduced to enter the drum body.

As a preferred scheme of the utility model, its characterized in that, be equipped with a plurality of sand grips that extend along its axial direction on the telescopic urceolus wall, effectively increase telescopic overall structure intensity, also convenient and cone pulley cooperate.

The utility model has the advantages that: the utility model has reasonable structural design, the sealing ring is arranged on the sleeve through the clamping groove, the positioning effect is good, the sealing ring is not easy to loosen and detach, the disassembly and the assembly are convenient, and the sealing ring is not easy to deform under the protection of the clamping groove, thereby prolonging the service life of the sealing ring; the sealing ring is provided with a blocking claw and a sealing claw to form a double sealing structure, so that the sealing effect is effectively improved; and through blocking the claw and insert the annular groove and be clearance fit, when effectively reducing the possibility that debris got into in the drum body, also corresponding reduction frictional force promotes flower-drum pivoted smoothness nature, in addition, still adds and is equipped with the extension, can block debris such as part rainwater and dust betterly to centrifugal force when utilizing the rotation throws away debris, further reduces the possibility that debris got into in the drum body, increase of service life.

The present invention will be further explained with reference to the drawings and the embodiments.

Drawings

Fig. 1 is a schematic exploded view of the present invention.

Fig. 2 is a schematic structural view of the present invention in assembly and use.

Fig. 3 is an enlarged schematic view of a structure of a portion a in fig. 2.

Fig. 4 is an exploded view of fig. 2.

Fig. 5 is an enlarged schematic view of the structure of the portion B in fig. 4.

Detailed Description

Referring to fig. 1 to 5, the present embodiment provides a sealing structure for a bicycle hub, which includes a drum body 1, a sleeve 2 and a sealing ring 3.

The end face of the drum body 1 is provided with an adaptation cavity 11, the front portion of the sleeve 2 is provided with an adaptation part 21 adapted to the adaptation cavity 11, and the adaptation part 21 is provided with a clamping groove 22 adapted to the sealing ring 3.

3 covers of sealing washer are established on draw-in groove 22, correspond on the side chamber wall of adaptation chamber 11 the position of sealing washer 3 is equipped with annular groove 12, be equipped with on the periphery wall of sealing washer 3 and extend to block claw 31 in the annular groove 12, annular groove 12's transversal right angled triangle of personally submitting. The blocking claw 31 is matched with the annular groove 12 in shape, that is, the side of the blocking claw 31 facing the opening of the adaptive cavity 11 is a vertical wall, so that the blocking effect of the blocking claw 31 on sundries is effectively improved. The blocking claw 31 and the annular groove 12 are provided with a fit clearance, namely, the blocking claw 31 is not contacted with the groove wall of the annular groove 12, and a small amount of lubricating grease can be filled into the fit clearance in a clearance fit mode, so that the smooth performance and the sealing effect of the rotation of the hub are both considered.

And a sealing claw 32 extending to the front cavity wall of the adaptive cavity 11 is arranged on the front end surface of the sealing ring 3. Preferably, the sealing claw 32 is in contact with a front cavity wall of the adaptive cavity 11, and the axial assembling force of the sleeve 2 is utilized to realize that the sealing claw 32 abuts against the front cavity wall of the adaptive cavity 11, so as to achieve both the sealing effect and the reduction of the friction force. Preferably, the outer circumferential surface of the sealing ring 3 is further provided with a V-shaped groove 33, so that a certain amount of impurities can be stored, and the impurities are effectively prevented from entering the drum body 1.

The edge of the opening of the adapting cavity 11 is provided with an extending part 13 which can extend axially outwards and cover the adapting part 21, and the tail end of the extending part 13 can be just flush with or slightly inwards of the end wall of the adapting part 21. Thus, the extension portion 13 can block as much as possible the portion of the sundries such as rain and dust, thereby reducing the possibility of the sundries entering the drum body 1. And the sundries adhered on the extension part 13 can be thrown away under the action of centrifugal force when the extension part 13 rotates, thereby having self-cleaning effect.

The utility model discloses bicycle flower-drum seal structure can be suitable for the front wheel flower-drum and use, if when using as the rear wheel flower-drum, need be in be equipped with a plurality of sand grips 23 that extend along its axial direction on the urceolus wall of sleeve 2, effectively increase sleeve 2's overall structure intensity, also convenient and cone pulley installation that cooperatees.

During the dismouting, sealing washer 3 is installed on sleeve 2 through draw-in groove 22, and positioning effect is good, and difficult pine takes off, brings the convenience for installation and dismantlement. When in use, as the sealing ring 3 is provided with the blocking claw 31 and the sealing claw 32, when sundries need to bypass the extending part 13 to carry out the assembly gap between the drum body 1 and the sleeve 2, the sundries are blocked by the first blocking claw 31; if the sundries cross the blocking claw 31 and then fall into the V-shaped groove 33, even if the sundries turn over the V-shaped groove 33, the sealing claw 32 also blocks the sundries, so that the difficulty of the sundries entering the drum body 1 is greatly increased, the sealing effect is good, the sundries such as rainwater and dust are better blocked, the normal operation of the flower-drum is ensured, and the service life is long.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation. If the utility model discloses above-mentioned embodiment, adopt rather than the same or similar structure and the other seal structure that obtain, all be in the utility model discloses protection scope.

Claims

1. The utility model provides a bicycle flower-drum seal structure, its includes drum body and sleeve, the drum body terminal surface is equipped with the adaptation chamber, its characterized in that: it still includes the sealing washer, telescopic front portion be equipped with the adaptation portion of adaptation chamber looks adaptation, be equipped with in this adaptation portion with the draw-in groove of sealing washer looks adaptation, the sealing washer cover is established on the draw-in groove, correspond on the side chamber wall in adaptation chamber the position of sealing washer is equipped with the annular groove, be equipped with on the periphery wall of sealing washer and extend to block the claw in the annular groove, be equipped with on the preceding terminal surface of sealing washer and extend to the sealed claw of the preceding chamber wall position in adaptation chamber.

2. The bicycle hub seal structure of claim 1, wherein the sealing pawl is in contact with a front cavity wall of the adapter cavity.

3. The bicycle hub seal arrangement of claim 1, wherein the annular groove has a right triangle cross-section.

4. The bicycle hub seal structure of claim 1 or 2, wherein the blocking pawl and the annular groove have a fit clearance therebetween.

5. The bicycle hub seal structure according to any one of claims 1 to 3, wherein an opening edge of the fitting cavity is provided with an extension portion that can axially extend outward and wrap the fitting portion.

6. The bicycle hub sealing structure according to any one of claims 1-3, wherein the outer cylindrical wall of the sleeve is provided with a plurality of ribs extending in an axial direction thereof.

7. The bicycle hub sealing structure according to any one of claims 1 to 3, wherein the seal ring is provided with a V-shaped groove on an outer peripheral surface thereof.