CN204527513U - A kind of Bicycle front derailleur - Google Patents
A kind of Bicycle front derailleur Download PDFInfo
- Publication number
- CN204527513U CN204527513U CN201520065679.2U CN201520065679U CN204527513U CN 204527513 U CN204527513 U CN 204527513U CN 201520065679 U CN201520065679 U CN 201520065679U CN 204527513 U CN204527513 U CN 204527513U
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- CN
- China
- Prior art keywords
- movable part
- arc portion
- rotating shaft
- pivot joint
- front derailleur
- 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.)
- Expired - Fee Related
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- 238000000034 method Methods 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The utility model discloses a kind of Bicycle front derailleur, comprising: fixed cell, its detouchable is arranged on the vehicle frame of bicycle; Gearshift adjustment unit, it is articulated on described fixed cell; Chain guide, itself and the pivot joint of described gearshift adjustment unit; Attaching parts, its one end and described fixed cell pivot joint, the other end and the pivot joint of described chain guide.It is simple that the utility model has structure, and adjustment in use is convenient, the advantage that switching action is reliable and stable.
Description
Technical field:
The utility model relates to technical field of bicycles, relates to a kind of change-speed box in particular.
Background technology:
Bicycle a kind ofly tramples vehicle on the small-sized road that drives with manpower, is a kind of common vehicle.Along with the demand that expanding economy and people consume, the kind of bicycle gets more and more, and wherein variable speed bicycle obtains the favor of customer with its excellent performance.Variable speed bicycle, at the in-built gear being equipped with a set of different size of bicycle rear hub, when bicycle is advanced, can be placed in chain on different gears by gearshift, thus changes the speed of a motor vehicle, to adapt to different road conditions and the muscle power of cyclist.
Bicycle front derailleur is closed on front sprocket wheel and is installed on cycle frame, laterally switches between front sprocket wheel to make chain.The amount of parts of existing Bicycle front derailleur is many, complex structure, and the volume taken is relatively large, and the inconvenience that adjustment in use gets up very.
Utility model content:
The purpose of this utility model is exactly the deficiency for prior art, and provides a kind of Bicycle front derailleur, and it is simple that it has structure, and adjustment in use is convenient, the advantage that switching action is reliable and stable.
Technology solution of the present utility model is as follows:
A kind of Bicycle front derailleur, comprising:
Fixed cell, its detouchable is arranged on the vehicle frame of bicycle, described fixed cell comprises the first arc portion and the second arc portion, the one end in described first arc portion and one end pivot joint in described second arc portion, the other end in described first arc portion is connected with the other end detouchable in described second arc portion, described second arc portion is fixedly installed boss, described boss offers two tapped bore, governing screw is provided with in described tapped bore, described second arc portion offers centre hole, and described centre hole is positioned at the below of described boss;
Gearshift adjustment unit, it is articulated on described fixed cell, and described gearshift adjustment unit comprises the first rotating shaft, the movable part be set in described first rotating shaft, the first torsion spring between described first rotating shaft and described movable part, be fixedly installed on the extension below described movable part, the second rotating shaft be arranged in the through hole of described extension, the second torsion spring be set in described second rotating shaft, be arranged on the cramp of described movable part side; Described movable part is by described first rotating shaft and described fixed cell pivot joint; One end of described first torsion spring is fastened on described movable part, and the other end is fastened in described second arc portion; One end of described second torsion spring is fastened on described movable part, and the other end is fastened on chain guide;
Chain guide, itself and the pivot joint of described gearshift adjustment unit, described chain guide is provided with the first connecting portion and the second connecting portion near the side of described gearshift adjustment unit, described first connecting portion offers the first through hole and the second through hole along its length, and described first connecting portion is by the extension pivot joint of described second bearing pin and described movable part;
Attaching parts, its one end and described fixed cell pivot joint, the other end and the pivot joint of described chain guide.
Preferred as technique scheme, described attaching parts comprises connecting panel and is arranged on the side plate of described connecting panel both sides, and described side plate is fixedly connected with described connecting panel, and the upper and lower of described side plate all offers through hole.
Preferred as technique scheme, the second described arc portion is provided with a pair lug, described lug offers through hole, the top of described connecting panel by bearing pin and described lug pivot joint, bottom by bearing pin respectively with the first connecting portion and the described second connecting portion pivot joint of described chain guide.
Preferred as technique scheme, the length of the first described connecting portion is greater than the length of described second connecting portion.
Preferred as technique scheme, there is an angle in the first described connecting portion and described second connecting portion and horizontal surface, the size of described angle is 5 ° ~ 20 °.
Preferred as technique scheme, the first described rotating shaft and the second rotating shaft all run through described movable part, and one end of described first rotating shaft is arranged in described centre hole, and the other end extends to the outside of described movable part; One end of described second rotating shaft is arranged in the first through hole of described chain guide, and the other end extends to the outside of described extension.
Preferred as technique scheme, described movable part and described extension one-body molded.
Preferred as technique scheme, the top end face of described boss is the straight plane of an inclination, and the corner dimension of the straight plane of described inclination and horizontal surface is 30 ° ~ 45 °.
Preferred as technique scheme, the one end in the first described arc portion and the one end in described second arc portion are by bearing pin pivot joint, and the other end in described first arc portion is connected by screw bolt and nut with the other end in described second arc portion.
Preferred as technique scheme, described cramp is anchored on described movable part by screw bolt and nut.
The beneficial effects of the utility model are: gearshift adjustment unit is by the first torsion spring and described fixed cell pivot joint, chain guide is by the second torsion spring and the pivot joint of described gearshift adjustment unit, attaching parts one end and described fixed cell pivot joint, the other end and the pivot joint of described chain guide, structure is simple, elastic force by torsion spring at the end of speed governing automatically resets, and adjustment in use is convenient, and switching action is reliable and stable.
Accompanying drawing illustrates:
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of first direction of the present utility model;
Fig. 2 is the structural representation of second direction of the present utility model;
Fig. 3 is the structural representation of fixed cell of the present utility model;
Fig. 4 is the structural representation of gearshift adjustment unit of the present utility model;
Fig. 5 is the structural representation of chain guide of the present utility model;
Fig. 6 is the structural representation of attaching parts of the present utility model;
Fig. 7 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model.
In figure, 10, fixed cell; 11, the first arc portion; 12, the second arc portion; 121, lug; 122, boss; 123, governing screw; 124, centre hole; 20, gearshift adjustment unit; 21, movable part; 211, extension; 22, the first rotating shaft; 23, the second rotating shaft; 24, the first torsion spring; 25, the second torsion spring; 26, cramp; 30, chain guide; 31, the first connecting portion; 311, the first through hole; 312, the second through hole; 32, the second connecting portion; 40, attaching parts; 41, connecting panel; 42, side plate.
Detailed description of the invention:
Embodiment: by particular specific embodiment, embodiment of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by content disclosed in the present specification, " top " mentioned in the present embodiment, " bottom ", " top ", " bottom " etc. describe and define according to common meaning, such as, the direction definition of reference to gravitational, under the direction of gravity is, on contrary direction is, similarly up be top or top, in below is bottom or bottom, be also only to be convenient to describe and understand, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, also when being considered as the enforceable category of the utility model.
A kind of Bicycle front derailleur, comprising:
Fixed cell 10, see shown in Fig. 1 to Fig. 3, its detouchable is arranged on the vehicle frame of bicycle, described fixed cell 10 comprises the first arc portion 11 and the second arc portion 12, the one end in described first arc portion 11 and the one end in described second arc portion 12 are by bearing pin pivot joint, the other end in described first arc portion 11 is connected by screw bolt and nut with the other end in described second arc portion 12, described second arc portion 12 is fixedly installed boss 122, described boss 122 offers two tapped bore, governing screw 123 is provided with in described tapped bore, described second arc portion 12 offers centre hole 124, described centre hole 124 is positioned at the below of described boss 122, the top end face of described boss 122 is the straight plane of an inclination, and the corner dimension of the straight plane of described inclination and horizontal surface is 30 ° ~ 45 °.
Gearshift adjustment unit 20, see shown in Fig. 1 and Fig. 4, it is articulated on described fixed cell 10, and described gearshift adjustment unit 20 comprises the first rotating shaft 22, the movable part 21 be set in described first rotating shaft 22, the first torsion spring 24 between described first rotating shaft 22 and described movable part 21, be fixedly installed on the extension 211 below described movable part 21, the second rotating shaft 23 be arranged in the through hole of described extension 211, the second torsion spring 25 be set in described second rotating shaft 23, be arranged on the cramp 26 of described movable part 21 side; Described movable part 21 is by described first rotating shaft 22 and the pivot joint of described fixed cell 10; One end of described first torsion spring 24 is fastened on described movable part 21, and the other end is fastened in described second arc portion 12; One end of described second torsion spring 25 is fastened on described movable part 21, and the other end is fastened on chain guide 30; Described cramp 26 is anchored on described movable part 21 by screw bolt and nut; Described movable part 21 is one-body molded with described extension 211.
Chain guide 30, see shown in Fig. 1 and Fig. 5, itself and the pivot joint of described gearshift adjustment unit 20, described chain guide 30 is provided with the first connecting portion 31 and the second connecting portion 32 near the side of described gearshift adjustment unit 20, described first connecting portion 31 offers the first through hole 311 and the second through hole 312 along its length, and described first connecting portion 31 is by extension 211 pivot joint of described second bearing pin 23 with described movable part 21; Wherein, the length of described first connecting portion 31 is greater than the length of described second connecting portion 32, and described first connecting portion 31 and described second connecting portion 32 exist an angle with horizontal surface, and the size of described angle is 5 ° ~ 20 °.
As shown in Figure 7, described first rotating shaft 22 and the second rotating shaft 23 all run through described movable part 21, and one end of described first rotating shaft 22 is arranged in described centre hole 124, and the other end extends to the outside of described movable part 21; One end of described second rotating shaft 23 is arranged in the first through hole 311 of described chain guide 30, and the other end extends to the outside of described extension 211.
Attaching parts 40, as shown in Figure 6, its one end and described fixed cell 10 pivot joint, the other end and the pivot joint of described chain guide 30.Described attaching parts 40 comprises connecting panel 41 and is arranged on the side plate 42 of described connecting panel 41 both sides, and described side plate 42 is fixedly connected with described connecting panel 41, and the upper and lower of described side plate 42 all offers through hole.See shown in Fig. 3, Fig. 5 and Fig. 6, second arc portion 12 of described fixed cell 10 is provided with a pair lug 121, described lug 121 offers through hole, the top of described connecting panel 41 by bearing pin and described lug 121 pivot joint, bottom by bearing pin respectively with the first connecting portion 31 and described second connecting portion 32 pivot joint of described chain guide 30.
During use, the chain (not shown) of bicycle is through described chain guide 30, cotton rope (not shown) is relied on to pull gearshift adjustment unit 20, described gearshift adjustment unit 20 drives chain guide 30 to swing, the swing of described chain guide 30 changes the position of chain, chain is jumped on different sprocket wheels, thus changes the speed of a motor vehicle.Described governing screw 123 is for the spacing between adjusting chain and chain guide 30 two side.
Described embodiment in order to illustrative the utility model, but not for limiting the utility model.Any those skilled in the art all without prejudice under spirit of the present utility model and category, can modify to described embodiment, therefore rights protection scope of the present utility model, should listed by claim of the present utility model.
Claims (10)
1. a Bicycle front derailleur, is characterised in that, comprising:
Fixed cell (10), its detouchable is arranged on the vehicle frame of bicycle, described fixed cell (10) comprises the first arc portion (11) and the second arc portion (12), the one end in described first arc portion (11) and one end pivot joint in described second arc portion (12), the other end in described first arc portion (11) is connected with the other end detouchable in described second arc portion (12), described second arc portion (12) is fixedly installed boss (122), described boss (122) offers two tapped bore, governing screw (123) is provided with in described tapped bore, described second arc portion (12) offers centre hole (124), described centre hole (124) is positioned at the below of described boss (122),
Gearshift adjustment unit (20), it is articulated on described fixed cell (10), described gearshift adjustment unit (20) comprises the first rotating shaft (22), be set in the movable part (21) on described first rotating shaft (22), be positioned at the first torsion spring (24) between described first rotating shaft (22) and described movable part (21), be fixedly installed on the extension (211) of described movable part (21) below, be arranged on the second rotating shaft (23) in the through hole of described extension (211), be set in the second torsion spring (25) on described second rotating shaft (23), be arranged on the cramp (26) of described movable part (21) side, described movable part (21) is by described first rotating shaft (22) and described fixed cell (10) pivot joint, one end of described first torsion spring (24) is fastened on described movable part (21), and the other end is fastened in described second arc portion (12), one end of described second torsion spring (25) is fastened on described movable part (21), and the other end is fastened on chain guide (30),
Chain guide (30), itself and described gearshift adjustment unit (20) pivot joint, described chain guide (30) is provided with the first connecting portion (31) and the second connecting portion (32) near the side of described gearshift adjustment unit (20), described first connecting portion (31) offers the first through hole (311) and the second through hole (312) along its length, and described first connecting portion (31) is by extension (211) pivot joint of described second rotating shaft (23) with described movable part (21);
Attaching parts (40), its one end and described fixed cell (10) pivot joint, the other end and described chain guide (30) pivot joint.
2. Bicycle front derailleur according to claim 1, it is characterized in that: described attaching parts (40) comprises connecting panel (41) and is arranged on the side plate (42) of described connecting panel (41) both sides, described side plate (42) is fixedly connected with described connecting panel (41), and the upper and lower of described side plate (42) all offers through hole.
3. Bicycle front derailleur according to claim 2, it is characterized in that: described second arc portion (12) is provided with a pair lug (121), (121) offer through hole to described lug, the top of described connecting panel (41) by bearing pin and described lug (121) pivot joint, bottom by bearing pin respectively with the first connecting portion (31) and described second connecting portion (32) pivot joint of described chain guide (30).
4. Bicycle front derailleur according to claim 1, is characterized in that: the length of described first connecting portion (31) is greater than the length of described second connecting portion (32).
5. Bicycle front derailleur according to claim 4, is characterized in that: described first connecting portion (31) and described second connecting portion (32) exist an angle with horizontal surface, and the size of described angle is 5 ° ~ 20 °.
6. Bicycle front derailleur according to claim 1, it is characterized in that: described first rotating shaft (22) and the second rotating shaft (23) all run through described movable part (21), one end of described first rotating shaft (22) is arranged in described centre hole (124), and the other end extends to the outside of described movable part (21); One end of described second rotating shaft (23) is arranged in first through hole (311) of described chain guide (30), and the other end extends to the outside of described extension (211).
7. Bicycle front derailleur according to claim 1, is characterized in that: described movable part (21) is one-body molded with described extension (211).
8. Bicycle front derailleur according to claim 1, is characterized in that: the top end face of described boss (122) is the straight plane of an inclination, and the corner dimension of the straight plane of described inclination and horizontal surface is 30 ° ~ 45 °.
9. Bicycle front derailleur according to claim 1, it is characterized in that: the one end in described first arc portion (11) and the one end in described second arc portion (12) are by bearing pin pivot joint, and the other end in described first arc portion (11) is connected by screw bolt and nut with the other end in described second arc portion (12).
10. Bicycle front derailleur according to claim 1, is characterized in that: described cramp (26) is anchored on described movable part (21) by screw bolt and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065679.2U CN204527513U (en) | 2015-01-29 | 2015-01-29 | A kind of Bicycle front derailleur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065679.2U CN204527513U (en) | 2015-01-29 | 2015-01-29 | A kind of Bicycle front derailleur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204527513U true CN204527513U (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520065679.2U Expired - Fee Related CN204527513U (en) | 2015-01-29 | 2015-01-29 | A kind of Bicycle front derailleur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204527513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516045A (en) * | 2017-02-13 | 2018-09-11 | 坎培诺洛有限公司 | Front derailleur for bicycle |
-
2015
- 2015-01-29 CN CN201520065679.2U patent/CN204527513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516045A (en) * | 2017-02-13 | 2018-09-11 | 坎培诺洛有限公司 | Front derailleur for bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |