CN211222890U - Long service life's bicycle ratchet subassembly - Google Patents
Long service life's bicycle ratchet subassembly Download PDFInfo
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- CN211222890U CN211222890U CN201922163730.4U CN201922163730U CN211222890U CN 211222890 U CN211222890 U CN 211222890U CN 201922163730 U CN201922163730 U CN 201922163730U CN 211222890 U CN211222890 U CN 211222890U
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- ratchet
- bicycle
- axle sleeve
- thick bamboo
- seat
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Abstract
The utility model discloses a long service life's bicycle ratchet subassembly, including ring gear, a ratchet section of thick bamboo and axle sleeve, the ring gear cover is located outside the ratchet section of thick bamboo and is cooperateed with a ratchet section of thick bamboo, the axle sleeve cover is located in the ratchet section of thick bamboo, the axle sleeve includes a cover body, inlay on the cover body and be equipped with a plurality of lubricating bodies or be in the coating has the lubricant film on internal perisporium and/or the periphery wall of cover. The axle sleeve is arranged in the ratchet wheel cylinder, the bicycle center penetrates through the axle sleeve, the axle sleeve plays a role in protecting the bicycle center and the ratchet wheel cylinder, so that the stress between the bicycle center and the ratchet wheel cylinder is more uniform and stable, the axle sleeve is provided with a lubricating body or a lubricating layer, the abrasion between the bicycle center and the ratchet wheel cylinder is further reduced, and the service life of the bicycle center and the ratchet wheel assembly is prolonged.
Description
Technical Field
The utility model relates to a bicycle accessory field, especially a long service life's bicycle ratchet subassembly.
Background
The general bicycle hub structure is that a ratchet wheel component is assembled at one end of the axial inner part of a hub shell, the ratchet wheel component comprises a toothed ring and a ratchet wheel cylinder matched with the toothed ring, the toothed ring is matched with one end of the axial inner part of the hub shell, the ratchet wheel cylinder is partially positioned at the periphery of the hub shell, a bicycle core is arranged in the ratchet wheel cylinder and the hub shell in a penetrating mode, two ends of the bicycle core are fixedly connected to a bicycle frame, and the ratchet wheel cylinder is driven by torque and can drive the toothed ring and the hub shell to rotate in sequence. The hub shell rotates to drive the wheel connected with the hub shell to rotate.
In the traditional hub structure, the bicycle core is in direct contact with the inner peripheral wall of the ratchet wheel cylinder, the stress between the bicycle core and the ratchet wheel cylinder is unstable, the abrasion between the bicycle core and the ratchet wheel cylinder is easily caused, and the service life of the bicycle core and the ratchet wheel assembly is short.
Disclosure of Invention
In order to solve the defects of the prior art, the utility model aims to provide a bicycle ratchet wheel component with long service life.
In order to realize the above-mentioned purpose, the utility model discloses a long service life's bicycle ratchet subassembly, including a ring gear, a ratchet section of thick bamboo and axle sleeve, the ring gear cover is located outside the ratchet section of thick bamboo and is cooperateed with a ratchet section of thick bamboo, the axle sleeve cover is located in the ratchet section of thick bamboo, the axle sleeve includes a cover body, inlay on the cover body and be equipped with a plurality of lubricating bodies or be in the coating has the lubricant film on internal perisporium and/or the periphery wall of cover.
Preferably, the lubricating body or the lubricating layer is made of graphite.
Preferably, the sleeve body is made of copper.
Preferably, the ratchet barrel comprises a ratchet seat and a speed-changing gear plate seat, a plurality of grooves are formed in the periphery of the ratchet seat, pawl blocks are arranged in the grooves, ratchets are arranged on the inner peripheral wall of the gear ring, the gear ring is sleeved on the periphery of the ratchet seat, and the ratchets are matched with the pawl blocks.
Preferably, the ratchet seat is provided with at least one limiting step, the limiting step is close to the variable-speed gear disc seat, and the pawl block is far away from the variable-speed gear disc seat.
Preferably, the outer diameter of the limiting step is larger than the inner diameter of the gear ring.
Preferably, a waterproof oil seal is arranged between the limit step far away from the variable speed gear disc seat and the gear ring.
Compared with the prior art, the beneficial effects of the utility model are that: the axle sleeve is arranged in the ratchet wheel cylinder, the bicycle center penetrates through the axle sleeve, the axle sleeve plays a role in protecting the bicycle center and the ratchet wheel cylinder, so that the stress between the bicycle center and the ratchet wheel cylinder is more uniform and stable, the axle sleeve is provided with a lubricating body or a lubricating layer, the abrasion between the bicycle center and the ratchet wheel cylinder is further reduced, and the service life of the bicycle center and the ratchet wheel assembly is prolonged.
Drawings
FIG. 1 is an exploded view of a bicycle hub.
Fig. 2 is a sectional view of fig. 1.
FIG. 3 is a schematic view of the ratchet assembly.
FIG. 4 is a schematic view of an assembly structure of the ratchet barrel and the shaft sleeve in the ratchet assembly.
Fig. 5 is a schematic structural view of the bushing.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1-5, a bicycle hub comprises a hub shell 1, a hub 2 and a ratchet assembly, wherein the ratchet assembly comprises a toothed ring 3, a ratchet barrel 4 and a shaft sleeve 5, an assembly space 11 which axially runs through is arranged in the hub shell 1, the toothed ring 2 is arranged in one end of the assembly space 11 and matched with the assembly space 11, the toothed ring 2 is sleeved outside the ratchet barrel 3 and matched with the ratchet barrel 3 for use, the shaft sleeve 5 is sleeved in the ratchet barrel 4, and the hub 2 axially penetrates through the assembly space 11, the shaft sleeve 5 and the ratchet barrel 3.
A shaft sleeve 5 is arranged between the bicycle core 2 and the ratchet wheel barrel 4, so that the stress between the bicycle core and the ratchet wheel barrel is more uniform and stable, and the abrasion between the bicycle core and the ratchet wheel barrel is reduced.
The shaft sleeve 5 comprises a sleeve body 51, wherein a plurality of lubricating bodies 52 are embedded in the sleeve body 51 or a lubricating layer is coated on the inner peripheral wall and/or the outer peripheral wall of the sleeve body 51. The lubricating body 52 or the lubricating layer is preferably made of graphite, and the sleeve body 51 is preferably made of copper. In this embodiment, the sleeve 51 is embedded with a plurality of graphite lubricants 52, the lubricants 52 are cylindrical, one end of the lubricants 52 contacts with the core 2, and the other end contacts with the inner peripheral wall of the ratchet barrel 4, so that the graphite lubricant is fully utilized, the abrasion between the core 2 and the ratchet barrel 4 due to too large stress is further reduced, and the service life of the core and the ratchet assembly is prolonged.
In this embodiment, the ratchet barrel 4 includes an integrated ratchet seat 41 and a variable-speed gear plate seat 42, the variable-speed gear plate seat 42 is located outside the hub shell 1, the shaft sleeve 5 is disposed in the ratchet seat 51, a plurality of grooves 411 are disposed on the periphery of the ratchet seat 41, pawl blocks 6 are disposed in the grooves 411, the pawl blocks 6 are linked through C-shaped retaining rings 7, ratchets 31 are disposed on the inner peripheral wall of the gear ring 3, the gear ring 3 is sleeved outside the ratchet seat 41, and the ratchets 31 are matched with the pawl blocks 6, so that one-way transmission between the ratchet barrel 4 and the gear ring 3 is realized.
Still be equipped with at least one spacing step 412 on the ratchet seat 41, spacing step 412 is close to variable speed gear plate seat 42, the external diameter of spacing step 412 is greater than the internal diameter of ring gear 3, keeps away from be equipped with waterproof oil seal 8 between the spacing step of variable speed gear plate seat 42 and the ring gear 3, waterproof oil seal and equipment space looks adaptation not only play waterproof sealing's effect, but also can carry on spacingly to the ring gear.
In this embodiment, the outer peripheral wall of the gear ring 3 is provided with engaging teeth 32, the inner peripheral wall at one end of the assembly space 11 is provided with inner teeth 12, the inner teeth 12 are matched with the engaging teeth 32, and the gear ring 2 can bear high torque through tooth matching.
Claims (7)
1. The utility model provides a long service life's bicycle ratchet subassembly, includes a ring gear and a ratchet section of thick bamboo, the ring gear cover is located outside the ratchet section of thick bamboo and is cooperateed with a ratchet section of thick bamboo, its characterized in that: still include a axle sleeve, the axle sleeve cover is located in the ratchet section of thick bamboo, the axle sleeve includes a cover body, inlay on the cover body and be equipped with a plurality of lubricated bodies or be in the coating has the lubricant layer on cover body internal perisporium and/or the periphery wall.
2. The long-life bicycle ratchet assembly of claim 1, wherein: the lubricating body or the lubricating layer is made of graphite.
3. The long-life bicycle ratchet assembly of claim 1, wherein: the sleeve body is made of copper.
4. The long-life bicycle ratchet assembly of claim 1, wherein: the ratchet barrel comprises a ratchet seat and a speed-changing gear disc seat, a plurality of grooves are formed in the periphery of the ratchet seat, pawl blocks are arranged in the grooves, ratchets are arranged on the inner peripheral wall of the gear ring, the gear ring is sleeved on the periphery of the ratchet seat, and the ratchets are matched with the pawl blocks.
5. The long-life bicycle ratchet assembly of claim 4, wherein: the ratchet wheel seat is provided with at least one limiting step, the limiting step is close to the variable-speed gear disc seat, and the pawl block is far away from the variable-speed gear disc seat.
6. The long-life bicycle ratchet assembly of claim 5, wherein: the outer diameter of the limiting step is larger than the inner diameter of the gear ring.
7. The long-life bicycle ratchet assembly of claim 5, wherein: and a waterproof oil seal is arranged between the limit step far away from the variable speed fluted disc seat and the toothed ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922163730.4U CN211222890U (en) | 2019-12-06 | 2019-12-06 | Long service life's bicycle ratchet subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922163730.4U CN211222890U (en) | 2019-12-06 | 2019-12-06 | Long service life's bicycle ratchet subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211222890U true CN211222890U (en) | 2020-08-11 |
Family
ID=71926866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922163730.4U Active CN211222890U (en) | 2019-12-06 | 2019-12-06 | Long service life's bicycle ratchet subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211222890U (en) |
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2019
- 2019-12-06 CN CN201922163730.4U patent/CN211222890U/en active Active
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