GB2503681A - Bicycle wheel hub driving mechanism - Google Patents
Bicycle wheel hub driving mechanism Download PDFInfo
- Publication number
- GB2503681A GB2503681A GB201211802A GB201211802A GB2503681A GB 2503681 A GB2503681 A GB 2503681A GB 201211802 A GB201211802 A GB 201211802A GB 201211802 A GB201211802 A GB 201211802A GB 2503681 A GB2503681 A GB 2503681A
- Authority
- GB
- United Kingdom
- Prior art keywords
- abutting
- engaging
- ratchet
- wheel hub
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
- B60B27/047—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets comprising a freewheel mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/24—Freewheels or freewheel clutches specially adapted for cycles
- F16D41/30—Freewheels or freewheel clutches specially adapted for cycles with hinged pawl co-operating with teeth, cogs, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
A driving structure for a wheel hub 1 of a bicycle includes a wheel hub 1 having a ratchet wheel 11, a ratchet base (2, figure 1) connected to the wheel hub 1, an engaging block or pawl 22 and an elastic member 23, the elastic member 23 abutting against the engaging block 22 so that the engaging block 22 is engaged with the ratchet wheel 11. A rotating ring 3 is assembled between the ratchet wheel 11 and the ratchet base 2 having a plurality of abutting plates 31, each abutting plate 31 abutting against the corresponding engaging block 22, a resilient member 4 abuts against the rotating ring 3. Under this arrangement, the ratchet wheel 11 simultaneously engages with the engaging blocks 22, because the abutting places 31 control the action of the engaging blocks 22 as the rotating ring rotates.
Description
DRiVING STRUCTURE FOR A WHEEL HUB OF A BICYCLE
I. Field of the Invention
The present invention relates to a driving structure design, more particularly to a driving structure design for a wheel hub of a bicycle.
2. Description of Related Art
Bicycle activity is more and more popular in the 21st century because bicycle activity is eco-friendly, convenient and entertaining.
Many enterprises encourage their employees to go to work by bicycles instead of driving vehicles today. Many people also go shopping or go traveling by bicycles during their leisLire time. Because a wheel hub of a bicycle is very important for the comfort of riding, a conventional driving structure for a wheel hub of a bicycle conies to the world.
The conventional driving structure for a wheel hub of a bicycle comprises a wheel hub and a ratchet base, the wheel hub having a ratchet wheel defined at one end thereof, the ratchet wheel having a plurality of teeth defined around an inner side thereof, the ratchet base having an operating member defined at one end thereof, the wheel hub connected to the ratchet base so that the operating member of the ratchet base is enclosed by the ratchet wheel of the wheel hub, a plurality of pivoting grooves defined around an outer periphery of the operating member, an engaging block having an engaging part and a pivoting part at two ends thereof, the engaging block pivoted on one end of each pivoting groove via the pivoting part, an elastic member being set into another end of each pivoting groove, the engaging part of the engaging block exposed from tile pivoting groove toward the teeth of the ratchet wheel, the elastic member abutting against the engaging part so that the engaging part of the engaging block is engaged with the teeth of the ratchet wheel hi only one direction.
Under this arrangement, when the ratchet base is clockwise rotated relative to the ratchet wheel of the wheel hub, the teeth of the ratchet wheel engage with the engaging parts of the engaging blocks because each elastic member abuts against the corresponding engaging block toward the teeth of the ratchet wheel. As a result, the wheel hub is rotated by the rotation of the ratchet base. In contrast, when the ratchet wheel of the wheel hub is clockwise rotated relative to the ratchet base, the teeth of the ratchet wheel disengage from the engaging parts of the engaging blocks because the engaging part is engaged with the teeth of the ratchet wheel in only one direction. As a result, the ratchet base is not rotated by the rotation of the wheel hub.
Therefore, when a user is riding, the wheel hub of the bicycle still rotates smoothly even though the user does not tread on a pedal of a bicycle.
However, the conventional driving structure for a wheel hub of a bicycle still has one disadvantage as following: The recovery force of one elastic member might be different from the oilier elastic member so that the teeth of the ratchet wheel cannot simultaneously engage with the engaging parts of the engaging blocks when tile ratchet base is clockwise rotated relative to the ratchet wheel of the wheel hub. Therefore, one engaging part which is always firstly engaged with the teeth of the ratchet wheel would be quickly broken.
The present invention has arisen to mitigate and/or obviate the disadvantages of the conventional.
The main objective of the present invention is to provide an improved driving structure.
To achieve the objective, a driving structure for a wheel hub of a bicycle comprises a wheel hub having a ratchet wheel defined at one end thereof, the ratchet wheel having a plurality of teeth defined around an inner side thereof, a ratchet base having an operating member defined at one end thereof, the wheel hub connected to the ratchet base so that the operating member of the ratchet base is enclosed by the ratchet wheel of the wheel hub, a plurality of pivoting grooves defined around an outer periphery of the operating member, an engaging block having an engaging part and a pivoting part at two ends thereof, the engaging block pivoted on one end of each pivoting groove via the pivoting part, an elastic member being set into another end of each pivoting groove, the engaging part of the engaging block exposed from the pivoting groove toward the teeth of the ratchet wheel, the elastic member abutting against the engaging part so that the engaging part of the engaging block is engaged with the teeth of tile ratchet wheel, at ieast one abutting groove defined on the outer periphery of the operating member, the abutting groove located between tile two adjacent pivoting grooves, a rotating ring assembled between the ratchet wheel and the operating member, a plurality of abutting plates defined around the rotating ring, the abutting plates respectively corresponding to the engaging blocks, each abutting plate abutting against the corresponding engaging block, the rotating ring having an abutting rib, the abutting rib inserted into the abutting groove, an elastonier received hi the abutting groove, one end of the elastomer abutting against a wall of the abutting groove, another end of the elastonier abutting against the abutting rib. Wherein, one end of one abutting plate is bent toward a center of the rotating ring so as to be defined as the abutting rib; an opening groove is defined between each two adjacent abutting plates; the opening groove is corresponding to the corresponding engaging block; the engaging part of each engaging block is exposed from the corresponding opening groove so as to be engaged with the teeth of the ratchet wheel.
Under this arrangement, when the ratchet base is clockwise rotated relative to the ratchet wheel of the wheel hub, the teeth of the ratchet wheel simultaneously engage with the engaging parts of the engaging blocks and the abutting rib of the rotating ring compresses against the elastomer; in contrast, when the ratchet wheel of the wheel hub is clockwise rotated relative to the ratchet base, the teeth of the ratchet wheel simultaneously disengage from the engaging parts of the engaging blocks and a recovery force of the elastomer compresses against the abutting rib of the rotating ring.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
In the drawings: Fig. 1 is an exploded view of a driving structure for a wheel hub of a bicycle of the present invention; Fig. 2 is a perspective view of the driving structure for a wheel hub of a bicycle; Fig. 3 is a partially exploded view of the driving structure for a wheel hub of a bicycle; Fig. 4 is a cross-sectional view for showing a ratchet base which is clockwise rotated relative to a wheel hub; and Fig. 5 is a cross-sectional view for showing the wheel hub which is clockwise rotated relative to the ratchet base.
Referring to the drawings to Figs. 1-3, a driving structure for a wheel hub of a bicycle hi accordance with the present invention comprises a wheel hub (1). a ratchet base (2), a rotating ring (3) and an elastomer (4).
The wheel hub (I) has a ratchet wheel (ii) defined at one end thereof The ratchet wheel (I I) has a plurality of teeth defined around an inner side thereof The ratchet base (2) has an operating member (21) defined at one end thereof. The wheel hub (1) is connected to the ratchet base (2) so that the operating member (21) of the ratchet base (2) is enclosed by the ratchet wheel (I I) of tile wheel hub (I). A plurality of pivoting grooves (211) is defined around an outer periphery of the operating member (21) (there are three pivoting grooves (211) equidistantly defined around the outer periphery of the operating member (21) in this embodiment of the present invention). An engaging block (22) has an engaging part (221) and a pivoting part (222) at two ends thereof The engaging block (22) is pivoted on one end of each pivoting groove (2 Ii) via the pivoting part (222). An elastic member (23) is set into another end of each pivoting groove (211). The engaging part (221) of the engaging block (22) is exposed from the pivoting groove (211) toward the teeth of the ratchet wheel (11). The elastic member (23) abuts against the engaging part (221) so that the engaging part (221) of the engaging block (22) is engaged with the teeth of the ratchet wheel (ii). At least one abutting groove (212) is defined on the outer periphery of the operating member (21). The abutting groove (212) is located between the two adjacent pivoting grooves (211).
The rotating ring (3) is assembled between the ratchet wheel (11) and the operating member (21). A plurality of abutting plates (31) is defined around the rotating ring (3). The abutting plates (3 I) are respectively corresponding to the engaging blocks (22) (there are three abutting plates (31) equidistantly defined around the rotating ring (3) in this embodiment of the present invention). Each abutting plate (31) abuts against the corresponding engaging block (22). The rotating ring (3) has an abutting rib (32). The abutting rib (32) is inserted into the abutting groove (212).
The elastoiner (4) is received in the abutting groove (212). One end of the elastorner (4) abuts against a wall of the abutting groove (212).
Another end of tile elastomer (4) abuts against the abutting rib (32) (as shown in Figs. 3-4).
Under this arrangement, when the ratchet base (2) is clockwise rotated relative to the ratchet wheel (Ii) of the wheel hub (1), tile teeth of the ratchet wheel (11) simultaneously engage with the engaging parts (221) of the engaging blocks (22) to counterclockwise rotate each engaging block (22) so that each engaging block (22) counterclockwise compresses against the abutting plates (31) of the rotating ring (3); thereafter, the rotating ring (3) is counterclockwise rotated by the compression of the engaging block (22); finally, the abutting rib (32) of the rotating ring (3) compresses against the elastoiner (4) via the rotation of the rotating ring (3) (as show in Fig. 4).
In contrast, when the ratchet wheel (11) of the wheel hub (1) is clockwise rotated relative to the ratchet base (2), the teeth of the ratchet wheel (ii) simultaneously disengage froni the engaging parts (22!) of the engaging blocks (22) to clockwise rotate each engaging b!ock (22) so that each engaging block (22) clockwise compresses against the elastic member (23); thereafler, a recovery force of the elastomer (4) compresses against the abutting rib (32) of the rotating ring (3) to clockwise rotate the rotating ring (3); finally each abutting plate (31) of the rotating ring (3) abuts against tile corresponding engaging block (22) (as show in Fig. 5).
Furthermore, one end of one abutting plate (31) is bent toward a center of the rotating ring (3) so as to be defined as the abutting rib (32).
An opening groove (33) is defined between each two adjacent abutting plates (31). The opening groove (33) is corresponding to the corresponding engaging block (22). The engaging part (221) of each engaging block (22) is exposed from the corresponding opening groove (33) so as to be engaged with the teeth of the ratchet wheel (11).
All in all, when the ratchet base (2) is clockwise rotated relative to the ratchet wheel (II) of the wheel hub (I), although the recovery force of one elastic member (23) is different from the other elastic member (23), the teeth of the ratchet wheel (Ii) simultaneously engage with the engaging parts (22 I) of the engaging blocks (22) rather than non-simultaneously engage with the engaging parts (221) of the engaging blocks (22) as the prior art, because of the rotating ring (3) and the elastomer (4) of the present invention.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that niany other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (5)
- Claim(s) I. A driving structure for a wheel hub of a bicycle comprising: a wheel hub (1) having a ratchet wheel (Ii) defined at one end thereof, the ratchet wheel (11) having a plurality of teeth defined around an inner side thereof, a ratchet base (2) having an operating member (2 I) defined at one end thereof, the wheel hub (1) coirnected to the ratchet base (2) so that the operating member (21) of the ratchet base (2) is enclosed by the ratchet wheel (II) of the wheel hub (I), a plurality of pivoting grooves (211) defined around an outer periphery of the operating member (21), an engaging block (22) having an engaging part (221) and a pivoting part (222) at two ends thereof, the engaging block (22) pivoted on one end of each pivoting groove (211) via the pivoting part (222), an elastic member (23) being set into another end of each pivoting groove (211), the engaging part (221) of the engaging block (22) exposed from the pivoting groove (211) toward the teeth of the ratchet wheel (11), the elastic member (23) abutting against the engaging part (221) so that the engaging part (221) of the engaging block (22) is engaged with the teeth of the ratchet wheel (1), at least one abutting groove (212) defined on the outer periphery of the operating member (23), the abutting groove (21 2) located between the two adjacent pivoting grooves (21!); a rotating ring (3) assembled between the ratchet wheel (11) and the operating member (21), a plurality of abutting plates (31) defined around the rotating ring (3), tile abutting plates (31) respectively corresponding to the engaging blocks (22), each abutting plate (31) abutting against the corresponding engaging block (22), the rotating ring (3) having an abutting rib (32), the abutting rib (32) inserted into the abutting groove (212); and an elastomer (4) received in the abutting groove (212), one end of the elastorner (4) abutting against a wail of the abutting groove (212), another end of the elastonier (4) abutting against the abutting rib (32); wherein, when the ratchet base (2) is clockwise rotated relative to the ratchet wheel (11) of the wheel hub (1), the teeth of the ratchet wheel (11) simultaneously engage with the engaging parts (221) of the engaging blocks (22) and the abutting rib (32) of the rotating ring (3) compresses against the elastomer (4); hi contrast, when the ratchet wheel (11) of the wheel hub (I) is clockwise rotated relative to the ratchet base (2), the teeth of the ratchet wheel (ii) simultaneously disengage from the engaging parts (221) of the engaghig blocks (22) and a recovery force of the elastonier (4) compresses against the abutting rib (32) of the rotating ring (3).
- 2. The driving structure for a wheel hub of a bicycle as claimed hi claim I, wherein one end of one abutting plate (31) is bent toward a center of the rotating ring (3) so as to be defined as the abutting rib (32).
- 3. The driving structure for a wheel hub of a bicycle as claimed in claim 1, wherein an opening groove (33) is defined between each two adjacent abutting plates (31); the opening groove (33) is corresponding to the corresponding engaging block (22); the engaging part (221) of each engaging block (22) is exposed from the corresponding opening groove (33) so as to be engaged with the teeth of the ratchet wheel (11).
- 4. A driving structure for a wheel hub of a bicycle substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
- 5. A bicycle having a driving structure as claimed in any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB201211802A GB2503681A (en) | 2012-07-04 | 2012-07-04 | Bicycle wheel hub driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB201211802A GB2503681A (en) | 2012-07-04 | 2012-07-04 | Bicycle wheel hub driving mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201211802D0 GB201211802D0 (en) | 2012-08-15 |
| GB2503681A true GB2503681A (en) | 2014-01-08 |
Family
ID=46721822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB201211802A Withdrawn GB2503681A (en) | 2012-07-04 | 2012-07-04 | Bicycle wheel hub driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2503681A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212576B (en) * | 2021-06-02 | 2022-05-03 | 河南农业大学 | A crawler operating device with mud scraping function and narrow line spacing and high ground clearance driving equipment |
-
2012
- 2012-07-04 GB GB201211802A patent/GB2503681A/en not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201211802D0 (en) | 2012-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |