CN217671977U

CN217671977U - Noise reduction structure of bicycle hub

Info

Publication number: CN217671977U
Application number: CN202222069259.4U
Authority: CN
Inventors: 林上丰
Original assignee: Tien Hsin Industries Co Ltd
Current assignee: Tien Hsin Industries Co Ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-10-28
Anticipated expiration: 2032-08-08

Abstract

The application provides a structure of making an uproar falls in bicycle colored hub includes: the hub shell and the ratchet seat are respectively rotatably sleeved on the mandrel through a plurality of bearings, the hub shell is assembled with a driven gear ring, and the ratchet seat is provided with a first driving gear and a stop ring; a ratchet group contains the initiative fluted disc, the bias voltage component, interlock fluted disc and packing ring, the initiative fluted disc is established the second drive tooth and is meshed with the first drive tooth of ratchet seat, the initiative fluted disc is equipped with a plurality of first ratchets, the interlock fluted disc drives driven ring gear rotatory, the interlock fluted disc is equipped with the second ratchet and meshes with the first ratchet of initiative fluted disc, the bias voltage component locates the concave ring of hub casing and constantly pushes away the initiative fluted disc and leans on to the interlock fluted disc, the packing ring has to lean on face and fluted disc interlock laminating and side surface and ratchet seat's backstop ring to be protected a clearance, and extend an elasticity butt portion towards the backstop ring of ratchet seat, elasticity butt portion has several recesses and bulge and supports and leans on the backstop ring, in order to reach the function of making an uproar.

Description

Noise reduction structure of bicycle hub

Technical Field

The present application relates to a hub structure of a bicycle, and more particularly, to a hub structure with noise reduction function.

Background

Modern life wants healthy young, and the motion is the most direct method, and bicycle is one of the sports items widely advocated in recent years, and modern people's bicycle has turned into the motion demand from past demand of riding instead of walk gradually, therefore more and more people ride bicycle and lie prone around and walk in holiday leisure time, not only light agreeing, also can follow good scenery along the way, be more difficult to feel tired for the motion mode of running, also can alleviate the burden of knee, be fit for long-time going, especially bicycle is than healthy walking, the burden that can more alleviate the knee of jogging, and have good motion effect equally.

Through the research and development of many years, the bicycle is expanded from the traditional transportation means to the competition, sport and leisure functions, and is continuously promoted to be new, and the light weight and shock absorption function of the bicycle become very important requirements from the driving market in recent years. The ratchet wheel seat of the rear wheel is driven by a chain to rotate, the ratchet wheel seat drives the rear hub to rotate through a ratchet wheel set, the ratchet wheel set comprises a first fluted disc and a second fluted disc, a plurality of ratchets are respectively arranged on opposite surfaces of the first fluted disc and the second fluted disc, elastic members such as springs are respectively arranged on the outer sides of the first fluted disc and the second fluted disc in the axial direction, the first fluted disc can be driven by the ratchet wheel seat to rotate, the second fluted disc can be free and can drive the rear hub to rotate, when a pedal of the bicycle is treaded in the forward direction, the ratchet wheel seat simultaneously drives the first fluted disc to rotate in the forward direction, the first fluted disc and the second fluted disc are engaged by the aid of the elastic force of the elastic members on the outer sides of the first fluted disc and the second fluted disc, the rear hub is driven to rotate and then the bicycle is driven to move forwards, and when the pedal of the bicycle is treaded in the reverse direction, the ratchet wheel seat drives the first fluted disc to rotate in the reverse direction, the second fluted disc is pushed away, the rear hub is idle, and the bicycle cannot be driven to move forwards.

Because the elastic member beside the first gear plate is between the first gear plate and the ratchet seat, and both surfaces of the elastic member contact the radial surface of the first gear plate and the inner surface of the ratchet seat, the first gear plate/ratchet seat will generate friction and generate noise when rotating.

SUMMERY OF THE UTILITY MODEL

The main objective of the present application is to install a rubber washer between the linked fluted disc and the ratchet seat of the ratchet set, wherein the washer has a plurality of protrusions contacting with the stop ring of the ratchet seat, and a leaning surface contacting with the linked fluted disc, so that the noise can be reduced when the ratchet seat drives the ratchet set to drive the hub shell to rotate.

To achieve the above object, the present application discloses a noise reduction structure for a bicycle hub, comprising: the ratchet wheel comprises a mandrel, a hub shell, a ratchet wheel seat and a ratchet wheel group, wherein the mandrel is fixed and has a first end and a second end in different directions; the hub shell is rotatably sleeved on the mandrel through at least one bearing, the hub shell is provided with an annular accommodating space, a concave ring is arranged in the accommodating space, the concave ring is provided with a baffle wall, and the accommodating space is assembled with a driven gear ring; the ratchet wheel seat is rotatably sleeved at the second end of the mandrel through at least one bearing, and the ratchet wheel seat is provided with a first driving tooth and a stop ring which are adjacent to the first driving tooth and face the hub shell; the ratchet set includes: the driving gear disc is provided with a second driving tooth which is meshed with the first driving tooth of the ratchet seat, the driving gear disc is annularly provided with a plurality of first ratchets in the direction opposite to the ratchet seat, the linkage gear disc can drive the driven gear ring to rotate, the linkage gear disc is annularly provided with a plurality of second ratchets in the direction opposite to the hub shell and is meshed with the first ratchets of the driving gear disc, the biasing member is arranged on the concave ring of the hub shell and pushes the driving gear disc to the linkage gear disc, the gasket is made of elastic material and provided with a butting surface which is jointed with the linkage gear disc and a gap between one side surface and the stop ring of the ratchet seat, the gasket axially extends towards the stop ring of the ratchet seat and is provided with an elastic butting part which is provided with a plurality of concave parts, and a convex part is formed between the two concave parts and butts against the stop ring.

In an embodiment of the present application, the washer has at least one of the protrusions extending axially toward the stop ring of the ratchet seat.

In an embodiment of the present application, the linking fluted disc is provided with a concave portion facing the direction of the ratchet seat for mounting the washer, the concave portion has a radial surface and a circumferential surface, and the abutting surface of the washer is attached to the radial surface of the concave portion.

In one embodiment of the present application, the stop ring of the ratchet wheel seat has a recessed neck between the stop ring and the first drive tooth, and the washer is disposed around the periphery of the recessed neck.

In an embodiment of the present application, the driving fluted disc is tapered and arranged with a plurality of concave and convex first ratchet teeth facing the ratchet seat, the linking fluted disc has a tapered surface inclined towards the spindle direction facing the hub shell, and the tapered surface is surrounded with a plurality of concave and convex second ratchet teeth.

In an embodiment of the present application, the biasing member is a spring sleeved on an outer periphery of the collar of the driving fluted disc, one end of the biasing member abuts against the blocking wall of the hub shell, and the other end of the biasing member abuts against the driving fluted disc.

In one embodiment of the present application, the first drive tooth is a right helical bevel gear and the second drive tooth is a left helical bevel gear.

In an embodiment of the present application, the receiving space has an internal thread, the driven gear ring has an external thread for screwing with the internal thread of the receiving space, and the outer periphery of the linked gear ring has an outer ring gear engaged with an inner ring gear of the driven gear ring.

In an embodiment of the present application, the hub shell is rotatably sleeved at the first end of the spindle through a first bearing and a second bearing, and the ratchet seat is rotatably sleeved at the second end of the spindle through a third bearing and a fourth bearing.

The elastic abutting part is provided with a plurality of concave parts, a convex part is formed between the two concave parts to abut against a stop ring of the ratchet seat, the gasket is made of rubber materials and is arranged in the concave part of the linkage fluted disc to be abutted against the radial surface of the concave part of the linkage fluted disc, the convex part of the elastic abutting part is contacted with the radial surface of the stop ring of the ratchet seat, the gasket has good elasticity, and the plurality of convex parts can reduce the rotation friction of the ratchet seat/the linkage fluted disc and generate noise by increasing the contact area.

Other features and embodiments of the present application will be described in detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded perspective view of a preferred embodiment of the present application;

FIG. 2 is an exploded perspective view of the preferred embodiment of the present application in another orientation;

FIG. 3 is an assembled cross-sectional view of the preferred embodiment of the present application;

FIG. 4 is a perspective view of a washer according to a preferred embodiment of the present application;

FIG. 5 is a perspective view of another orientation of the gasket in accordance with the preferred embodiment of the present application;

FIG. 6 is a plan sectional view of a gasket in accordance with a preferred embodiment of the present application;

FIG. 7A is an enlarged view of a portion of the preferred embodiment of the present application;

FIG. 7B is an action diagram of FIG. 7A.

Description of the symbols

10: mandrel 11: first end 12: second end

13: first cover 14: second cover 20: hub shell

21: first bearing 22: second bearing 23: driven end

24: the accommodating space 241: internal thread 25: concave ring

251: the blocking wall 26: driven ring gear 261: inner ring gear

262: external thread 30: ratchet seat 31: third bearing

32: fourth bearing 33: first drive tooth 34: stop ring

35: concave neck 36: the dustproof cover 40: ratchet wheel set

41: driving toothed disc 411: second drive tooth 412: first ratchet

413: collar 42: the linkage fluted disc 421: outer ring gear

422: the second ratchet 423: recess 424: radial surface

425: peripheral surface 43: the biasing member 44: gasket ring

441: the abutting surface 442: side surface 443: elastic abutting part

4431: recessed portion 4432: projection L: gap

Detailed Description

The positional relationship described in the following embodiments includes: top, bottom, left and right, unless otherwise indicated, are based on the direction in which elements in the drawings are depicted.

Referring to fig. 1, fig. 2, fig. 3 and fig. 7A, a noise reduction structure for a bicycle hub of the present application includes: a mandrel 10, a hub housing 20 with two ends through, a ratchet seat 30 and a ratchet set 40. The mandrel 10 has a first end 11 and a second end 12 with different directions, the first end 11 of the mandrel 10 is screwed with a first cover 13, and the second end 12 of the mandrel 10 is screwed with a second cover 14.

The hub housing 20 is rotatably sleeved at the first end 11 of the spindle 10 through a plurality of bearings, in this embodiment, the hub housing 20 is rotatably sleeved at the first end 11 of the spindle 10 through a first bearing 21 and a second bearing 22, the hub housing 20 has a driven end 23 facing the direction of the ratchet seat 30, the driven end 23 is provided with an annular accommodating space 24, a concave ring 25 is disposed inside the accommodating space 24, a radial surface of the concave ring 25 is a blocking wall 251, the accommodating space 24 is assembled with a driven gear ring 26, an inner annular surface of the driven gear ring 26 is provided with a plurality of concave-convex inner ring teeth 261, in this embodiment, the accommodating space 24 is provided with an inner thread 241, and the driven gear ring 26 is provided with an outer thread 262 screwed with the inner thread 241 of the accommodating space 24.

The ratchet seat 30 is a hollow cylinder with two through ends and rotatably sleeved at the second end 12 of the spindle 10 through a plurality of bearings, in this embodiment, the ratchet seat 30 is rotatably sleeved at the second end 12 of the spindle 10 through a third bearing 31 and a fourth bearing 32, one end of the ratchet seat 30 facing the direction of the hub shell 20 is provided with a first driving tooth 33, in this embodiment, the first driving tooth 33 is a right helical gear, the periphery of the ratchet seat 30 adjacent to the first driving tooth 33 is provided with a stop ring 34, a concave neck 35 is provided between the stop ring 34 and the first driving tooth 33, and the periphery of the stop ring 34 is sleeved with an annular dust-proof sleeve 36.

The ratchet assembly 40 comprises a driving gear 41, a connecting gear 42, a biasing member 43 and a washer 44, wherein the driving gear 41 is a ring body having a second driving tooth 411 on an inner diameter thereof, the second driving tooth 411 is engaged with the first driving tooth 33 of the ratchet seat 30, in the embodiment, the second driving tooth 411 is a left helical gear, the driving gear 41 is a plurality of first ratchet teeth 412 arranged in a tapered shape facing the ratchet seat 30, and a collar 413 is protruded from the driving gear 41 facing the hub housing 20.

The interlocking toothed disc 42 is a ring body, an outer ring tooth 421 is disposed on an outer peripheral surface of the interlocking toothed disc 42, the outer ring tooth 421 is engaged with the inner ring tooth 261 of the driven toothed ring 26, the interlocking toothed disc 42 has a tapered surface inclined inward in a direction facing the hub housing 20, the tapered surface is annularly provided with a plurality of concave and convex second ratchet teeth 422, the first ratchet teeth 412 of the driving toothed disc 41 are engaged with the second ratchet teeth 422 of the interlocking toothed disc 42 to drive the interlocking toothed disc 42 to rotate, the interlocking toothed disc 42 is disposed with a concave portion 423 facing the direction of the ratchet seat 30, and the concave portion 423 has a radial surface 424 and a peripheral surface 425.

The biasing member 43 is disposed between the concave ring 23 of the hub shell 20 and the driving toothed disc 41, in the present embodiment, the biasing member 43 is a spring sleeved on the outer periphery of the collar 413 of the driving toothed disc 41, one end of the biasing member 43 abuts against the blocking wall 251 of the concave ring 25 of the hub shell 20, and the other end of the biasing member 43 abuts against the driving toothed disc 41 to push the driving toothed disc 41 against the driving toothed disc 42.

Referring to fig. 1, 4, 5, 6 and 7A, the washer 44, which is made of rubber material with a certain elasticity and can be compressed, is installed in the concave portion 423 of the linking fluted disc 42 and is annularly disposed around the outer periphery of the concave neck 35 of the ratchet seat 30, the cross section of the washer 44 is flat, and has an abutting surface 441 attached to the radial surface 424 of the concave portion 423 of the linking fluted disc 42 and a side surface 442 facing the stop ring 34 of the ratchet seat 30, a gap L is maintained between the side surface 442 and the stop ring 34 of the ratchet seat 30, the washer 44 axially extends toward the stop ring 34 of the ratchet seat 30 to form an elastic abutting portion 443, the elastic abutting portion 443 has a plurality of concave portions 4431, in this embodiment, the elastic abutting portion 443 is annularly provided with five concave portions 4431 at equal intervals, a convex portion 4432 is formed between two concave portions 4431 to abut against the stop ring 34, and the convex portion 4432 is obliquely arranged from the abutting surface 441 of the washer 44 to the stop ring 34 of the ratchet seat 30 to abut against the stop ring 343.

With the above-mentioned structure, referring to fig. 3, fig. 7A and fig. 7B again, when the bicycle is pedaled to move forward (forward rotation), the ratchet seat 30 is driven by the chain to rotate forward, the first driving tooth 33 of the ratchet seat 30 is engaged with the second driving tooth 411 of the driving toothed plate 41 to drive the first driving tooth 33 to rotate, and the biasing member 43 pushes the driving toothed plate 41 to lean against the linking toothed plate 42, so that the first ratchet tooth 412 of the driving toothed plate 41 is engaged with the second ratchet tooth 422 of the linking toothed plate 42 to drive the linking toothed plate 42 to rotate, and the outer ring tooth 421 of the linking toothed plate 42 is engaged with the inner ring tooth 261 of the driven toothed ring 26 of the hub shell 20, thereby driving the hub shell 20 to rotate forward and move the bicycle forward.

When the bicycle pedal is reversely stepped on, the ratchet seat 30 is driven by the chain to rotate reversely, the first driving teeth 33 of the ratchet seat 30 reversely drive the driving toothed disc 41 to rotate reversely, the first ratchet teeth 412 on the driving toothed disc 41 reversely rotate to disengage the second ratchet teeth 422 of the linkage toothed disc 42 and displace toward the biasing member 42, so as to press the biasing member 43, and thus the linkage toothed disc 42 cannot drive the driven toothed ring 26 to rotate, so that the hub shell 20 idles and cannot drive the bicycle to move forward.

It should be noted that, in the present application, a washer 44 made of rubber material is disposed between the linking toothed disc 42 and the ratchet seat 30, the washer 44 has a certain degree of elasticity, and the elasticity of the washer 44 is smaller than the elasticity of the biasing member 43, because the abutting surface 441 on one side of the washer 44 abuts against the radial surface 424 of the concave portion 423 of the linking toothed disc 42, the washer 44 extends to an elastic abutting portion 443 toward the stopping portion 34 of the ratchet seat 30, the elastic abutting portion 443 has a plurality of protrusions 4432 abutting against the stopping ring 34 of the ratchet seat 30, the washer 44 is made of rubber material, and abuts against the radial surface 424 of the concave portion 433 disposed in the concave portion 433 of the linking toothed disc 43, and the protrusions 4432 of the elastic abutting portion 443 contact with the radial surface of the stopping ring 34 of the ratchet seat 30, so as to have good elasticity, and reduce the noise generated by the rotation friction of the ratchet seat 30/linking toothed disc 42.

The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make modifications or changes to other equivalent embodiments without departing from the scope of the technology disclosed in the present application, but should be construed as technology or implementations substantially the same as the present application.

Claims

1. A bicycle hub noise reduction structure, comprising:

a mandrel having a first end and a second end with different directions;

a hub shell rotatably sleeved at the first end of the mandrel through at least one bearing, wherein the hub shell is provided with an annular accommodating space, a concave ring is arranged in the accommodating space, the concave ring is provided with a baffle wall, and the accommodating space is assembled with a driven gear ring;

the ratchet wheel seat is rotatably sleeved at the second end of the mandrel through at least one bearing, and is provided with a first driving tooth and a stop ring which are adjacent to the first driving tooth facing the hub shell;

a ratchet assembly, comprising: the driving fluted disc is provided with a second driving tooth which is meshed with the first driving tooth, the driving fluted disc is annularly provided with a plurality of first ratchets in the direction of the ratchet seat and can drive the driven fluted disc to rotate, the linkage fluted disc is annularly provided with a plurality of second ratchets in the direction of the hub shell and is meshed with the first ratchets, the bias component is arranged on the concave ring of the hub shell and pushes the driving fluted disc to the linkage fluted disc, the gasket is made of elastic material and provided with a butting surface which is jointed with the linkage fluted disc, a gap is reserved between one side surface of the gasket and the stop ring, the gasket axially extends towards the stop ring and is provided with an elastic butting part which is provided with a plurality of concave parts, and a convex part is formed between the two concave parts and butts against the stop ring.

2. The bicycle hub noise reduction structure according to claim 1, wherein the washer has at least one of the protrusions extending axially toward the stop ring of the ratchet seat.

3. The noise reduction structure for a bicycle hub according to claim 1, wherein the linking gear plate has a recess facing the ratchet seat for receiving the washer, the recess has a radial surface and a circumferential surface, and the abutting surface of the washer abuts against the radial surface.

4. The noise reducing structure for a bicycle hub according to claim 1, wherein the stop ring and the first driving tooth have a recessed neck therebetween, and the washer is disposed around the periphery of the recessed neck.

5. The noise reduction structure for a bicycle hub according to claim 1, wherein the driving gear plate has a tapered surface facing the hub shell and inclined toward the spindle, and the tapered surface has a plurality of second concave-convex ratchet teeth.

6. The noise reducing structure for a bicycle hub according to claim 1, wherein the biasing member is a spring disposed around the collar, one end of the biasing member abuts against the blocking wall, and the other end of the biasing member abuts against the driving sprocket.

7. The bicycle hub noise reduction structure according to claim 1, wherein the first driving tooth is a right helical gear and the second driving tooth is a left helical gear.

8. The noise reduction structure for a bicycle hub according to claim 1, wherein the receiving space has an internal thread, the driven toothed ring has an external thread for engaging with the internal thread, and the outer periphery of the linking toothed disc has an outer ring tooth engaged with an inner ring tooth of the driven toothed ring.

9. The noise reduction structure for a bicycle hub according to claim 1, wherein the hub housing is rotatably received at the first end of the spindle through a first bearing and a second bearing, and the ratchet seat is rotatably received at the second end of the spindle through a third bearing and a fourth bearing.