CN112943821A - Bicycle flywheel - Google Patents
Bicycle flywheel Download PDFInfo
- Publication number
- CN112943821A CN112943821A CN202110348705.2A CN202110348705A CN112943821A CN 112943821 A CN112943821 A CN 112943821A CN 202110348705 A CN202110348705 A CN 202110348705A CN 112943821 A CN112943821 A CN 112943821A
- Authority
- CN
- China
- Prior art keywords
- core
- pawl
- sleeve
- wall
- mounting
- 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.)
- Pending
Links
- 230000007704 transition Effects 0.000 claims description 18
- 230000008093 supporting effect Effects 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a flywheel for a bicycle, which comprises an outer sleeve, wherein a core mounting sleeve is mounted in the outer sleeve, a core is arranged in the core mounting sleeve, a shaft hole is formed in the core, baffle covers are arranged on the left side and the right side of the outer sleeve in the axial direction, pawl locking openings are uniformly distributed on the inner wall of the core mounting sleeve, more than one pair of mounting grooves with symmetrical circle centers are formed in the outer wall of the core, more than one pawl is clamped on the mounting grooves, an elastic part of the pawl is arranged in each mounting groove, and the side wall of the core is in surface contact with the wave crest surface of each pawl locking opening; when the invention is stressed on one side, the clamping condition caused by inclination due to unbalanced stress of the rotating shaft can be reduced, and the using smoothness is improved.
Description
Technical Field
The invention relates to a flywheel for a bicycle, and belongs to the technical field of flywheels.
Background
The flywheel of the existing bicycle generally comprises a core mounting sleeve, a core, a pawl locking port, balls, a spring and a blocking cover, wherein the pawls and the pawl locking port are matched with each other, the balls are distributed on the left side and the right side of the core, and a gap between the core mounting sleeve and the core is larger, so that the core mounting sleeve is positioned on the core through the balls.
Therefore, there is a need for a bicycle freewheel that reduces the jamming caused by the inclination of the shaft due to unbalanced force when one side of the shaft is stressed, and improves the smoothness of use.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a bicycle flywheel, which can reduce the clamping condition caused by inclination due to unbalanced stress of a rotating shaft when a force is applied to one side, and improve the use smoothness; the defects of the prior art can be overcome.
The technical scheme of the invention is as follows: a flywheel for a bicycle comprises a core mounting sleeve, wherein a core is arranged in the core mounting sleeve, a shaft hole is formed in the core, blocking covers are arranged on the left side and the right side of the axial direction of the core mounting sleeve, mounting grooves are formed in the outer wall of the core, pawls are arranged on the mounting grooves, elastic parts of the pawls are arranged in the mounting grooves, pawl locking openings matched with the pawls are formed in the inner wall of the core mounting sleeve, transition surfaces are arranged between every two pawl locking openings, and a surface supporting effect is achieved between the circumferential surface of the core and the transition surfaces.
On the cross section of the core, two mounting grooves which are symmetrical in circle center are a pair, and the number of the mounting grooves is multiple.
The mounting groove pairs are arranged on the cross section of the core in a non-uniform way, or the pawl locking openings are arranged on the inner wall of the core mounting sleeve in a non-uniform way; in a locking state, only one pair or two pairs of pawls with symmetrical circle centers are clamped with the pawl locking openings at the same time, the bolt parts of other pairs of pawls are positioned on the transition surface, and the distance between the bolt part of each pair of pawls and the next pawl locking opening on the transition surface is inconsistent.
An arc-shaped hole is formed in the mounting groove, and an arc-shaped clamping block matched with the arc-shaped hole is arranged at one end of the pawl.
The elastic component comprises a clamping hole arranged in the core, the clamping hole is positioned on the opposite side of the arc-shaped hole, an elastic sheet is clamped in the clamping hole, and the free end of the elastic sheet abuts against the pawl to enable the free end of the pawl to bear force outwards.
Foretell elastomeric element includes the annular hole that is equipped with on the core, annular hole and arc hole intercommunication are equipped with the elastic ring in the annular hole, the elastic ring be located the outside of pawl, be equipped with the bayonet socket of mutually supporting with the elastic ring on the pawl, under the effect that the elastic ring contracts inwards, the free end of pawl outwards sticks up.
The circumferential wall of the core mounting sleeve is provided with convex teeth.
The outer ring of the core mounting sleeve is provided with an outer sleeve, the circumferential wall of the core mounting sleeve is provided with a groove, the inner wall of the outer sleeve is provided with a bulge matched with the groove, and the circumferential wall of the outer sleeve is provided with convex teeth.
And an anti-abrasion bulge is arranged on the contact surface of the free end of the pawl and the pawl locking opening.
Compared with the prior art, the flywheel for the bicycle comprises a core mounting sleeve, wherein a core is arranged in the core mounting sleeve, a shaft hole is formed in the core, blocking covers are arranged on the left side and the right side of the core mounting sleeve in the axial direction, a mounting groove is formed in the outer wall of the core, a pawl is arranged on the mounting groove, an elastic part of the pawl is arranged in the mounting groove, a pawl locking opening matched with the pawl is formed in the inner wall of the core mounting sleeve, transition surfaces are arranged between every two pawl locking openings, and a surface supporting effect is realized between the circumferential surface of the core and the transition surfaces; the structure has the advantages that the circumferential surface of the core and the transition surface have a surface supporting effect, the existing ball support is changed into the surface support, the inclined angle brought to the rotating shaft by unbalanced stress of the rotating shaft can be reduced when the single side is stressed, simultaneously, the blocking caused by the ball structure in the prior art to the core and the core mounting sleeve is avoided, and the use smoothness is improved.
On the cross section of the core, two mounting grooves which are symmetrical in the circle center are a pair, and the number of the mounting grooves is multiple; the mounting groove pairs are arranged on the cross section of the core in a non-uniform way, or the pawl locking openings are arranged on the inner wall of the core mounting sleeve in a non-uniform way; in a locking state, only one pair or two pairs of pawls with symmetrical circle centers are clamped with pawl locking openings at the same time, the spring bolt parts of other pairs of pawls are positioned on a transition surface, and the distance between the spring bolt part of each pair of pawls and the next pawl locking opening on the transition surface is inconsistent; and this application is every the spring bolt portion of pawl inconsistent with the distance of next pawl fore shaft on the transition surface, when needs joint, only need can the joint from the nearest pawl of next pawl fore shaft.
The installation groove is internally provided with an arc-shaped hole, and one end of the pawl is provided with an arc-shaped fixture block matched with the arc-shaped hole, so that the pawl can be conveniently assembled and disassembled, and the replacement of the pawl under the damage condition is convenient.
The first scheme of elastomeric element, its card hole that includes to be equipped with in the core, the card hole is located the opposite side in arc hole, and the joint has the flexure strip in the card hole, the free end of flexure strip with offset with the pawl and make the outside atress of pawl free end, can make the pawl free end lean out through the flexure strip like this, when needs pawl and pawl fore shaft joint, the pawl free end can with pawl fore shaft joint.
Elastic component's second scheme, it includes the annular ring that is equipped with on the core, annular ring and arc hole intercommunication are equipped with the elastic ring in the annular ring, the elastic ring be located the outside of pawl, be equipped with the bayonet socket of mutually supporting with the elastic ring on the pawl, under the effect that the elastic ring contracts inwards, the free end of pawl sticks up to outside, can make the pawl free end lean out through the elastic ring like this, when needs pawl and pawl fore shaft joint, the pawl free end can with pawl fore shaft joint.
The circumferential wall of the core mounting sleeve is provided with convex teeth, which is a scheme that the core mounting sleeve is directly connected with other components; so that the convex teeth on the core mounting sleeve can be directly matched with other gears or chain wheels.
The outer ring of the core mounting sleeve is provided with an outer sleeve, the circumferential wall of the core mounting sleeve is provided with a groove, the inner wall of the outer sleeve is provided with a bulge matched with the groove, and the circumferential wall of the outer sleeve is provided with convex teeth, which is a scheme that the core mounting sleeve is connected with other components through the outer sleeve; thus, the convex teeth on the outer sleeve are directly matched with other gears or chain wheels; meanwhile, the matching of the groove and the bulge is convenient for the assembly and disassembly of the outer sleeve and the core mounting sleeve.
The contact surface of the free end of the pawl and the pawl locking opening is provided with an anti-abrasion bulge, so that the durability of the pawl can be improved.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the present invention in a state without a cover.
FIG. 3 is a schematic view of the connection of the outer casing and the core mounting sleeve of the present invention.
FIG. 4 is a schematic view showing a coupling structure of a core according to a first aspect of the present invention.
Fig. 5 is a schematic view of a coupling structure of the pawl according to the first aspect of the present invention.
Fig. 6 is a schematic view showing a coupling structure of a core according to a second embodiment of the present invention.
Fig. 7 is a schematic view of a connection structure of a second embodiment of the core of the present invention in a non-detent state.
Fig. 8 is a schematic view of a coupling structure of a pawl according to a second embodiment of the present invention.
Fig. 9 is a schematic view of the connection structure of the core mounting sleeve of the present invention in a direct connection with other components.
Fig. 10 is a schematic view of the connection structure of the core mounting sleeve of the present invention to other components through the outer case.
Wherein, the coat 1; a core mounting sleeve 2; a core 3; a blocking cover 4; a pawl lock notch 5; a mounting groove 6; a pawl 7; an anti-wear projection 8; a clipping hole 9; an elastic sheet 10; an elastic ring 11; a bayonet 12.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
Embodiment 1. as shown in fig. 1, a bicycle flywheel comprises a core mounting sleeve 2, a core 3 is arranged in the core mounting sleeve 2, a shaft hole is arranged in the core 3, blocking covers 4 are arranged on the left and right sides of the core mounting sleeve 2 in the axial direction, a mounting groove 6 is arranged on the outer wall of the core 3, a pawl 7 is arranged on the mounting groove 6, an elastic part of the pawl 7 is arranged in the mounting groove 6, a pawl locking opening 5 matched with the pawl 7 is arranged on the inner wall of the core mounting sleeve 2, transition surfaces are arranged between every two pawl locking openings 5, and the circumferential surface and the transition surfaces of the core 3 play a surface supporting role; and an anti-abrasion bulge 8 is arranged on the contact surface of the free end of the pawl 7 and the pawl locking notch 5.
On the cross section of the core 3, two mounting grooves 6 which are symmetrical in the circle center are taken as a pair, and the number of the mounting grooves 6 is multiple pairs
The mounting grooves 6 are arranged unevenly on the cross section of the core 3 or the pawl locking notch 5 is arranged unevenly on the inner wall of the core mounting sleeve 2; in the locking state, only one or two pairs of circularly symmetric pawls 7 are clamped with the pawl locking openings 5 at the same time, the bolt parts of the other pairs of pawls 7 are positioned on the transition surface, and the distance between the bolt part of each pair of pawls 7 and the next pawl locking opening 5 on the transition surface is different, wherein the circle center angle between the non-uniformly arranged mounting grooves 6 is shown in fig. 9.
An arc-shaped hole is formed in the mounting groove 6, and an arc-shaped clamping block matched with the arc-shaped hole is arranged at one end of the pawl 7.
The first scheme of the elastic component comprises a clamping hole 9 arranged in the core 3, the clamping hole 9 is positioned on the opposite side of the arc-shaped hole, an elastic sheet 10 is clamped in the clamping hole 9, and the free end of the elastic sheet 10 abuts against the pawl 7 to enable the free end of the pawl 7 to be stressed outwards.
The second scheme of elastic component, it includes the annular hole that is equipped with on core 3, annular hole and arc hole intercommunication are equipped with elastic ring 11 in the annular hole, elastic ring 11 be located the outside of pawl 7, be equipped with bayonet 12 with elastic ring 11 mutually supporting on pawl 7, under the effect of elastic ring 11 internal contraction, the free end of pawl 7 sticks up outward.
The core mounting sleeve 2 is provided with convex teeth on the circumferential wall of the core mounting sleeve 2 by means of direct connection with other components, as shown in fig. 9.
The scheme that the core mounting sleeve 2 is connected with other components through the outer sleeve 1 is that the outer ring of the core mounting sleeve 2 is provided with the outer sleeve 1, the circumferential wall of the core mounting sleeve 2 is provided with a groove, the inner wall of the outer sleeve 1 is provided with a bulge matched with the groove, and the circumferential wall of the outer sleeve 1 is provided with convex teeth.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a flywheel for bicycle, it includes core installation cover (2), is equipped with core (3) in core installation cover (2), is equipped with the shaft hole in core (3), is equipped with fender lid (4), its characterized in that in core installation cover (2) axial left and right sides: the outer wall of the core (3) is provided with a mounting groove (6), the mounting groove (6) is provided with a pawl (7), the mounting groove (6) is internally provided with an elastic part of the pawl (7), the inner wall of the core mounting sleeve (2) is provided with a pawl locking notch (5) which is matched with the pawl (7), transition surfaces are arranged between every two pawl locking notches (5), and the circumferential surface and the transition surfaces of the core (3) play a role in supporting.
2. The bicycle flywheel according to claim 1, wherein: on the cross section of the core (3), two mounting grooves (6) which are symmetrical in the circle center are a pair, and the number of the mounting grooves (6) is multiple.
3. The bicycle freewheel according to claim 2 characterized in that: the mounting grooves (6) are arranged unevenly on the cross section of the core (3) or the pawl locking port (5) is arranged unevenly on the inner wall of the core mounting sleeve (2); in a locking state, only one pair or two pairs of pawls (7) with symmetrical circle centers are clamped with the pawl locking openings (5) at the same time, the bolt parts of other pairs of pawls (7) are positioned on the transition surface, and the distance between the bolt part of each pair of pawls (7) and the next pawl locking opening (5) on the transition surface is different.
4. A bicycle flywheel according to any of claims 1-3, wherein: an arc-shaped hole is formed in the mounting groove (6), and an arc-shaped clamping block matched with the arc-shaped hole is arranged at one end of the pawl (7).
5. The bicycle flywheel according to claim 4, wherein: the elastic component comprises a clamping hole (9) formed in the core (3), the clamping hole (9) is located on the opposite side of the arc-shaped hole, an elastic sheet (10) is connected in the clamping hole (9) in a clamping mode, and the free end of the elastic sheet (10) abuts against the pawl (7) to enable the free end of the pawl (7) to be stressed outwards.
6. The bicycle flywheel according to claim 4, wherein: elastic component include the annular ring that is equipped with on core (3), annular ring and arc hole intercommunication are equipped with elastic ring (11) in the annular ring, elastic ring (11) be located the outside of pawl (7), be equipped with bayonet socket (12) of mutually supporting with elastic ring (11) on pawl (7), under the effect of elastic ring (11) internal contraction, the free end of pawl (7) sticks up outward.
7. The bicycle flywheel according to any one of claims 1, 2, 3, 5, and 6, wherein: the circumferential wall of the core mounting sleeve (2) is provided with convex teeth.
8. The bicycle flywheel according to any one of claims 1, 2, 3, 5, and 6, wherein: an outer sleeve (1) is arranged on the outer ring of the core mounting sleeve (2), a groove is arranged on the circumferential wall of the core mounting sleeve (2), a bulge matched with the groove is arranged on the inner wall of the outer sleeve (1), and convex teeth are arranged on the circumferential wall of the outer sleeve (1).
9. The bicycle flywheel according to claim 1, wherein: and an anti-abrasion bulge (8) is arranged on the contact surface of the free end of the pawl (7) and the pawl locking notch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348705.2A CN112943821A (en) | 2021-03-31 | 2021-03-31 | Bicycle flywheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348705.2A CN112943821A (en) | 2021-03-31 | 2021-03-31 | Bicycle flywheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112943821A true CN112943821A (en) | 2021-06-11 |
Family
ID=76231539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110348705.2A Pending CN112943821A (en) | 2021-03-31 | 2021-03-31 | Bicycle flywheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112943821A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074040A (en) * | 2004-02-10 | 2007-11-21 | 本田技研工业株式会社 | Chain tension structure |
| US20080017471A1 (en) * | 2006-07-21 | 2008-01-24 | Shimano Inc. | Bicycle freewheel |
| CN101871496A (en) * | 2010-06-04 | 2010-10-27 | 江苏森威集团有限责任公司 | Special bearing flywheel for electric power-assisted bicycle |
| CN202703834U (en) * | 2012-07-25 | 2013-01-30 | 张家港市九鼎机械有限公司 | Connecting shaft type flywheel mechanism |
| CN202901107U (en) * | 2012-09-27 | 2013-04-24 | 久裕兴业科技股份有限公司 | Hub ratchet wheel structure |
| CN207034022U (en) * | 2017-08-02 | 2018-02-23 | 江苏创斯达科技有限公司 | A kind of bicycle freewheel |
-
2021
- 2021-03-31 CN CN202110348705.2A patent/CN112943821A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074040A (en) * | 2004-02-10 | 2007-11-21 | 本田技研工业株式会社 | Chain tension structure |
| US20080017471A1 (en) * | 2006-07-21 | 2008-01-24 | Shimano Inc. | Bicycle freewheel |
| CN101871496A (en) * | 2010-06-04 | 2010-10-27 | 江苏森威集团有限责任公司 | Special bearing flywheel for electric power-assisted bicycle |
| CN202703834U (en) * | 2012-07-25 | 2013-01-30 | 张家港市九鼎机械有限公司 | Connecting shaft type flywheel mechanism |
| CN202901107U (en) * | 2012-09-27 | 2013-04-24 | 久裕兴业科技股份有限公司 | Hub ratchet wheel structure |
| CN207034022U (en) * | 2017-08-02 | 2018-02-23 | 江苏创斯达科技有限公司 | A kind of bicycle freewheel |
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