CN217415366U

CN217415366U - Noiseless flower-drum of bicycle

Info

Publication number: CN217415366U
Application number: CN202221723785.1U
Authority: CN
Inventors: 王彦鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-09-13
Anticipated expiration: 2032-07-04

Abstract

The utility model discloses a noiseless flower-drum of bicycle relates to bicycle accessory field, including axle center and the flower-drum subassembly and the tower footing subassembly of cover on the axle center, the one end of flower-drum subassembly is connected with the one end of tower footing subassembly, be equipped with ratchet subassembly and separation and reunion subassembly between flower-drum subassembly and the tower footing subassembly is connected, the ratchet subassembly is including the pawl of rotation connection on the tower footing subassembly, the elastic construction that fixedly connects on the tower footing subassembly and is used for elasticity to press the pawl and the ratchet of cover outside the tower footing subassembly, ratchet and flower-drum subassembly fixed connection, and the ratchet meshes with the pawl of outwards overturning, the separation and reunion subassembly cover is established on the axle center, and separation and reunion subassembly and pawl butt joint cooperation; the pawl is pressed by the elastic structure to turn inwards, and the pawl overcomes the pressing force of the elastic structure through the butting of the clutch assembly to turn outwards; the utility model discloses the ratchet does not receive the resistance of pawl when idling, has consequently realized that the silence is silent, prolongs the life of flower-drum.

Description

Noiseless flower-drum of bicycle

Technical Field

The utility model belongs to the technical field of the bicycle accessory and specifically relates to a noiseless flower-drum of bicycle is related to.

Background

The bicycle hub is commonly called a 'hub barrel', and the hub comprises an iron hub and an aluminum hub. The iron flower-drum is the bicycle flower-drum that rides at general family, and the aluminium flower-drum is the flower-drum of comparatively high-grade, as the flower-drum of types such as bicycle, performance car, highway car. The bicycle hub plays the effect of connecting spoke and axletree, is more important part on the bicycle, and the average speed of the bicycle of riding directly receives the influence that the hub quality is bad. The whole stand up like a knock flower drum, so the name is obtained. The structure of the bicycle hub is divided into two types, wherein the bearing is of a ball-retaining structure, and the bearing is of an industrial bearing assembly.

The transmission occlusion of the existing bicycle hub is basically divided into two types, one type is the occlusion of a traditional spring piece pushing jack piece (also called a pawl, a spring piece, a clamping pin and the like); the other is a star-shaped ratchet structure, and the inner and outer ratchets are pushed to be meshed with each other by the inner and outer springs to drive. Taking a traditional spring plate pushing a jack to engage as an example, when a bicycle slides or is pushed, namely when the bicycle runs idle, a pawl moves relative to a ratchet under the pushing of the spring plate to generate a click …, many drivers can consider that the louder the hub is better, otherwise, the louder the hub is more, which means that the more times the pawl collides with the ratchet wheel is, the more the kinetic energy is lost to a certain extent, and the performance of the hub is weakened over time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

A bicycle silent hub comprises an axis, a hub component and a tower foundation component, wherein the hub component and the tower foundation component are sleeved on the axis, one end of the hub component is connected with one end of the tower foundation component, a ratchet component and a clutch component are arranged between the hub component and the tower foundation component, the ratchet component comprises a pawl which is rotatably connected to the tower foundation component, an elastic structure which is fixedly connected to the tower foundation component and is used for elastically pressing the pawl, and a ratchet wheel sleeved outside the tower foundation component, the ratchet wheel is fixedly connected with the hub component and is engaged with the pawl which overturns outwards, the clutch component is sleeved on the axis, and the clutch component is in abutting fit with the pawl; the pawl is pressed inwards to turn through the elastic structure, and the pawl overcomes the pressing force of the elastic structure to turn outwards through the jacking of the clutch assembly.

As a further aspect of the present invention: be equipped with the ratchet seat on the column foot subassembly, the outside at the ratchet seat is established to the ratchet cover, offers the fixed total groove that is used for placing pawl and elastic construction on the ratchet seat, and first fixed slot and second fixed slot have been seted up at the both ends in fixed total groove, and the one end of pawl is rotated and is connected on first fixed slot, and elastic construction fixed connection is on the second fixed slot.

As a further aspect of the present invention: the pawl comprises a rotating part which is rotatably connected to the first fixing groove, a butting part which is abutted and matched with the clutch component, a first meshing part and a second meshing part which are meshed with the ratchet wheel, and a sliding block part which is arranged between the first meshing part and the second meshing part, the elastic structure butts against and presses the sliding block part, and the rotating part, the butting part, the first meshing part, the second meshing part and the sliding block part are integrally formed.

As a further aspect of the present invention: the elastic structure comprises a first supporting part, a second supporting part and a spiral part, wherein the spiral part drives the first supporting part and the second supporting part to elastically overturn respectively, the spiral part is fixedly connected to the second fixing groove, the first supporting part is supported to press one end of the second fixing groove, and the second supporting part is supported to press the sliding block part.

As a further aspect of the present invention: the upper end and the lower end in the ratchet wheel are provided with a first ratchet and a second ratchet which are matched with the first meshing part and the second meshing part, and a circular groove matched with the sliding block part is arranged between the first ratchet and the second ratchet.

As a further aspect of the present invention: and the clutch assembly is provided with a sealing piece and is in dynamic sealing fit with the axis through the sealing piece.

As a further aspect of the present invention: the fixed total groove, the pawl and the elastic structure are all provided with N, wherein N is a natural number larger than 1.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses when the bicycle is not trampled idle running or is carried out, promote the jack piece with traditional spring leaf and carry out the interlock mode and compare, the utility model discloses the ratchet does not receive the resistance of pawl when idle running, has consequently realized that the silence is silent, can effectively reduce the loss of kinetic energy when making to ride or carry out, prolongs the life of flower-drum, has also avoided simultaneously causing certain noise harm to user and pedestrian because of the sound of flower-drum is too big.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the present invention with the hub assembly removed;

FIG. 3 is a schematic structural view of a tower base assembly and a ratchet assembly according to the present invention;

FIG. 4 is a schematic structural diagram of a tower foundation assembly of the present invention;

FIG. 5 is a schematic structural view of the pawl and spring structure of the present invention;

FIG. 6 is a schematic view of the ratchet wheel of the present invention;

fig. 7 is a schematic sectional structure of the present invention;

fig. 8 is an exploded view of the structure of the present invention.

The reference numerals and names in the figures are as follows:

1. an axis; 2. a hub assembly; 3. a foundation assembly; 4. a ratchet assembly; 5. a clutch assembly; 6. a pawl; 7. an elastic structure; 8. a ratchet wheel; 9. a ratchet seat; 10. fixing the main groove; 11. a first fixing groove; 12. a second fixing groove; 13. a rotating part; 14. a tightening part; 15. a first engaging portion; 16. a second engaging portion; 17. a slider portion; 18. a first support section; 19. a second support portion; 20. a spiral portion; 21. a first ratchet; 22. a second ratchet; 23. a circular groove; 24. and a seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Please refer to fig. 1-7, in an embodiment of the present invention, a bicycle silent hub comprises an axle center 1 and a hub assembly 2 and a tower footing assembly 3 sleeved on the axle center 1, one end of the hub assembly 2 is connected with one end of the tower footing assembly 3, a ratchet assembly 4 and a clutch assembly 5 are arranged between the hub assembly 2 and the tower footing assembly 3, the ratchet assembly 4 comprises a pawl 6 rotatably connected to the tower footing assembly 3, an elastic structure 7 fixedly connected to the tower footing assembly 3 and used for elastically pressing the pawl 6, and a ratchet 8 sleeved outside the tower footing assembly 3, the ratchet 8 is fixedly connected to the hub assembly 2, and the ratchet 8 is engaged with the pawl 6 turned outwards, the clutch assembly 5 is sleeved on the axle center 1, and the clutch assembly 5 is in abutting fit with the pawl 6; the pawl 6 is turned inwards by the abutting of the elastic structure 7, and the pawl 6 is turned outwards by the abutting of the clutch component 5 against the abutting force of the elastic structure 7.

The embodiment of the utility model provides an in, be equipped with ratchet seat 9 on the column foot subassembly 3, 8 covers of ratchet are established in ratchet seat 9's outside, offer the fixed total groove 10 that is used for placing pawl 6 and elastic construction 7 on the ratchet seat 9, first fixed slot 11 and second fixed slot 12 have been seted up at the both ends of fixed total groove 10, the one end rotation of pawl 6 is connected on first fixed slot 11, elastic construction 7 fixed connection is on second fixed slot 12, fixed total groove 10 is not closed to be set up, make pawl 6 can outwards overturn on fixed total groove 10, establish the 8 meshes of ratchet that ratchet seat 9 is outside with the cover.

The embodiment of the utility model provides an in, pawl 6 connects the rotation portion 13 on first fixed slot 11 including rotating, connect the complex with the top of clutch module 5 and support tight portion 14, with first meshing portion 15 and the second meshing portion 16 of ratchet 8 meshing and set up the slider portion 17 between first meshing portion 15 and second meshing portion 16, elastic structure 7 supports and presses on slider portion 17, rotation portion 13, support tight portion 14, first meshing portion 15, second meshing portion 16 and slider portion 17 integrated into one piece, through adopting integrated into one piece's structural style, can make pawl 6 firm and firm, durability and stability are good, through offering the slider portion 17 that is used for cooperating elastic structure 7 to support and press between first meshing portion 15 and second meshing portion 16, do not receive the interference that elastic structure 7 supported and press when making first meshing portion 15 and second meshing portion 16 mesh with ratchet 8.

The embodiment of the utility model provides an in, elastic construction 7 is including first supporting part 18, second supporting part 19 and drive first supporting part 18 and second supporting part 19 respectively and carry out the spiral portion 20 that elasticity overturns, spiral portion 20 fixed connection is on second fixed slot 12, first supporting part 18 supports to press on one of second fixed slot 12, second supporting part 19 supports to press on slider portion 17, second supporting part 19 through elastic construction 7 supports to press on slider portion 17 of pawl 6 and then make pawl 6 inwards overturn on fixed total groove 10, the accommodation space of slider portion 17 can be greater than the volume of second supporting part 19, be convenient for second supporting part 19 follows corresponding upset space occasionally of 6 outside elasticity upsets of pawl, elastic construction 7 can be torque spring.

In the embodiment of the present invention, the upper and lower ends of the ratchet 8 are provided with the first ratchet 21 and the second ratchet 22 matching with the first engaging portion 15 and the second engaging portion 16, the circular groove 23 matching with the slider portion 17 is provided between the first ratchet 21 and the second ratchet 22, the first ratchet 21 and the second ratchet 22 can be provided in the same structure, and for this, the first engaging portion 15 and the second engaging portion 16 can also be provided in the same structure, which is convenient for processing and forming; the pawl 6 is turned outwards by the abutting of the clutch assembly 5 against the abutting pressure of the elastic structure 7, that is, the second supporting portion 19 of the elastic structure 7 abutting against the sliding block portion 17 of the pawl 6 is also turned outwards elastically, and the circular groove 23 is used for accommodating the second supporting portion 19 which is turned outwards elastically through the arrangement of the circular groove 23, so that the pawl 6 and the ratchet wheel 8 which are turned outwards cannot be influenced.

The embodiment of the utility model provides an in, be equipped with sealing member 24 on the clutch assembly 5, clutch assembly 5 passes through sealing member 24 and axle center 1 dynamic seal cooperation, and sealing member 24 can be the oil blanket.

The embodiment of the utility model provides an in, fixed total trough 10, pawl 6 and elastic construction 7 all are equipped with N, and wherein, N is for being greater than 1 natural number, and through this design, pawl 6 is equipped with a plurality ofly, and each pawl 6 all is furnished with elastic construction 7 alone moreover, when the bicycle is trampled, can make response speed faster, and the experience of riding feels better.

The utility model discloses a theory of operation does: under the normal state of a silent bicycle hub, a pawl 6 is pressed by an elastic structure 7 to enable the pawl 6 to turn inwards on a fixed general groove 10, the pawl 6 and a clutch component 5 are in a separated state, when the bicycle is pedaled, a tower base component 3 is driven to rotate, the pawl 6 also rotates along with the rotation, the pawl 6 and the clutch component 5 are pressed tightly after rotating for a certain angle, the clutch component 5 is static and does not stand due to friction force generated by a sealing element 24 and an axis 1, at the moment, the acting force of the tower base component 3 driving the pawl 6 and the clutch component 5 to be pressed tightly is smaller than the friction force generated by the sealing element 24 and the axis 1, therefore, the pawl 6 overcomes the pressing force of the elastic structure 7 to turn outwards on the fixed groove through butting of the clutch component 5 and is meshed with a ratchet 8 sleeved outside a ratchet seat 9, at the moment, the tower base component 3 continuously rotates, and the acting force of the tower base component 3 driving the pawl 6 to rotate is larger than the friction force generated by the sealing elements 24 and the axis 1 Therefore, the pawl 6 is continuously abutted and matched with the clutch component 5, the clutch component 5 is driven to rotate by overcoming the friction force generated by the sealing element 24 and the shaft center 1, and the pawl 6 drives the ratchet wheel 8 and the hub component 2 fixedly connected with the ratchet wheel 8 to rotate; when the bicycle is not pedaled and idled, the tower footing component 3 stops rotating, the pawl 6 also stops rotating, the clutch component 5 stops rotating under the friction force generated by the sealing element 24 and the axle center 1, the pawl 6 is pressed by the elastic structure 7 on one side to enable the pawl 6 to turn inwards again, the acting force of the elastic structure 7 driving the pawl 6 to turn inwards is larger than the friction force generated by the sealing element 24 and the axle center 1, so that the pawl 6 and the clutch component 5 are forced to separate or the pawl 6 and the clutch component 5 are in a close static state, at the moment, the ratchet 8 and the hub component 2 idle under the action of inertia, and the ratchet 8 is not subjected to the resistance of the pawl 6, so that the silent hub of the bicycle is realized; during the pushing or backward of the bicycle, the hub assembly 2 idles forwards or backwards, and the silent hub of the bicycle is realized because the ratchet wheel 8 is not resisted by the pawl 6.

The utility model discloses when the bicycle is not trampled idle running or is carried out, promote very heavy piece with traditional spring leaf and carry out the interlock mode and compare, the utility model discloses ratchet 8 does not receive the resistance of pawl 6 when idle running, has consequently realized that the silence is noiseless, can effectively reduce the loss of kinetic energy when making to ride or carry out, prolongs the life of flower-drum, has also avoided simultaneously causing certain noise harm to user and pedestrian because of the sound of flower-drum is too big.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A bicycle silent hub comprises an axis, a hub component and a tower foundation component, wherein the hub component and the tower foundation component are sleeved on the axis, and the bicycle silent hub is characterized in that one end of the hub component is connected with one end of the tower foundation component; the pawl is pressed inwards to turn through the elastic structure, and the pawl overcomes the pressing force of the elastic structure to turn outwards through the jacking of the clutch assembly.

2. The silent bicycle drum as claimed in claim 1, wherein the tower base assembly is provided with a ratchet seat, the ratchet sleeve is disposed outside the ratchet seat, the ratchet seat is provided with a fixed assembly slot for accommodating the pawl and the elastic structure, the fixed assembly slot is provided at opposite ends thereof with a first fixing slot and a second fixing slot, one end of the pawl is rotatably coupled to the first fixing slot, and the elastic structure is fixedly coupled to the second fixing slot.

3. A bicycle silent hub as claimed in claim 2, wherein the pawl comprises a rotation part rotatably connected to the first fixing groove, a pressing part engaged with the clutch member, a first engagement part and a second engagement part engaged with the ratchet wheel, and a slider part provided between the first engagement part and the second engagement part, the elastic structure is pressed against the slider part, and the rotation part, the pressing part, the first engagement part, the second engagement part and the slider part are integrally formed.

4. The silent bicycle drum as claimed in claim 3, wherein the elastic structure comprises a first supporting portion, a second supporting portion and a spiral portion for driving the first supporting portion and the second supporting portion to elastically turn over, respectively, the spiral portion is fixedly connected to the second fixing groove, the first supporting portion abuts against one end of the second fixing groove, and the second supporting portion abuts against the sliding block portion.

5. A silent bicycle drum as claimed in claim 3, wherein the ratchet wheel has first and second ratchet teeth at upper and lower ends thereof to match the first and second engagement portions, and a circular groove between the first and second ratchet teeth to match the slider portion.

6. The silent bicycle drum as claimed in claim 1, wherein the clutch assembly is provided with a sealing member, and the clutch assembly is in dynamic sealing engagement with the hub through the sealing member.

7. The bicycle silent drum according to claim 2, wherein there are N fixing grooves, pawls and elastic structures, wherein N is a natural number greater than 1.