CN103253339A - Crank set structure - Google Patents
Crank set structure Download PDFInfo
- Publication number
- CN103253339A CN103253339A CN 201310133688 CN201310133688A CN103253339A CN 103253339 A CN103253339 A CN 103253339A CN 201310133688 CN201310133688 CN 201310133688 CN 201310133688 A CN201310133688 A CN 201310133688A CN 103253339 A CN103253339 A CN 103253339A
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- CN
- China
- Prior art keywords
- crank
- adapter shaft
- connecting shaft
- double
- set structure
- 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
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a crank set structure comprising a connecting shaft, a first crank and a second crank. The first crank is fixedly and integrally connected with one end of the connecting shaft. The second crank is integrally connected with the other end of the connecting shaft through a bolt. Before bicycle assembly, one end of the crank and one end of the connecting shaft are pre-integrated. During assembly, the other end of the connecting shaft is allowed to directly pass through a shaft hole of a bicycle frame to be integrally connected with the other crank through the bolt. Compared with the existing assembly ways, the crank set structure has the advantages that assembly time is shortened, production efficiency is improved, and production cost is lowered correspondingly.
Description
Technical field:
The present invention relates to the bicycle crank field, more specifically to the simple crank group of a kind of assembling structure.
Background technology:
Crank is requisite parts in the bicycle structure, and the one end connects sprocket wheel, and the other end connects foot-operated, needs two cranks in a bicycle structure.In the prior art, when assembling two cranks, in the bicycle axis hole of normally earlier adapter shaft being packed into, and then adorn two cranks respectively, this assembling mode production efficiency is low, the productive costs height.
Summary of the invention:
Purpose of the present invention just provides a kind of crank group structure, and it has the advantages that assembling is simple, production efficiency is high.
For achieving the above object, a kind of crank group structure of the present invention, it comprises adapter shaft, first crank and second crank, described first crank and adapter shaft one end are connected to one; Described second crank connects as one by double-screw bolt and the adapter shaft other end.
Preferred as technique scheme, an end of described adapter shaft forms tooth portion, and described first crank connects as one by riveted way and tooth portion.
Preferred as technique scheme, an end of described first crank and adapter shaft directly is welded as a whole.
Beneficial effect of the present invention is: before the bicycle assembling, end with one of them crank and adapter shaft is processed as one in advance, during assembling, directly the adapter shaft other end is penetrated the axis hole of vehicle frame, connect as one by double-screw bolt with another crank and to get final product, compare with existing assembling mode, saved time of setting up, improve production efficiency, also just reduced productive costs accordingly.
Description of drawings:
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is the three-dimensional exploded view of the embodiment of the invention one;
Fig. 2 is the three-dimensional exploded view of the embodiment of the invention two;
Among the figure: 1, adapter shaft; 2, first crank; 3, second crank; 4, double-screw bolt; 10, tooth portion.
The specific embodiment:
First kind of embodiment of the present invention be as shown in Figure 1: a kind of crank group structure, and it comprises adapter shaft 1, first crank 2 and second crank 3 and double-screw bolt 4; One end of adapter shaft 1 forms tooth portion 10, and described first crank 2 connects as one by riveted way and tooth portion 10; Described second crank 3 connects as one by double-screw bolt 4 and adapter shaft 1 other end.
Second kind of embodiment of the present invention be as shown in Figure 2: a kind of crank group structure, and it comprises adapter shaft 1, first crank 2 and second crank 3 and double-screw bolt 4; Described first crank 2 directly is welded as a whole with an end of adapter shaft 1; Described second crank 3 connects as one by double-screw bolt 4 and adapter shaft 1 other end.
Before the bicycle assembling, end welding or riveted joint with first crank 2 and adapter shaft 1 in advance is one, during assembling, directly adapter shaft 1 other end is passed the axis hole of cycle frame, connect as one by double-screw bolt 4 with second crank 3, compare with existing assembling mode, saved time of setting up, improve production efficiency, also just reduced productive costs accordingly.
Therefore the above do not limit protection scope of the present invention only for embodying the preferred embodiment of the principle of the invention, and every equalization of doing according to the present invention changes with modifying and all belongs within the claim that the present invention contains.
Claims (3)
1. crank group structure, it comprises adapter shaft (1), first crank (2) and second crank (3) and double-screw bolt (4), it is characterized in that: first crank (2) is connected to one with adapter shaft (1) one end; Second crank (3) connects as one by double-screw bolt (4) and adapter shaft (1) other end.
2. a kind of crank group structure according to claim 1, it is characterized in that: an end of described adapter shaft (1) forms tooth portion (10), and described first crank (2) connects as one by riveted way and tooth portion (10).
3. a kind of crank group structure according to claim 1 is characterized in that: described first crank (2) directly is welded as a whole with an end of adapter shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310133688 CN103253339A (en) | 2013-04-17 | 2013-04-17 | Crank set structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310133688 CN103253339A (en) | 2013-04-17 | 2013-04-17 | Crank set structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103253339A true CN103253339A (en) | 2013-08-21 |
Family
ID=48957639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310133688 Pending CN103253339A (en) | 2013-04-17 | 2013-04-17 | Crank set structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103253339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665041A (en) * | 2019-02-13 | 2019-04-23 | 雷明久 | A kind of bicycle crank shaft assemblies |
-
2013
- 2013-04-17 CN CN 201310133688 patent/CN103253339A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665041A (en) * | 2019-02-13 | 2019-04-23 | 雷明久 | A kind of bicycle crank shaft assemblies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130821 |