CN201121685Y - Pin shaft riveted structure of bicycle chain and corresponding chain - Google Patents
Pin shaft riveted structure of bicycle chain and corresponding chain Download PDFInfo
- Publication number
- CN201121685Y CN201121685Y CNU2007200463668U CN200720046366U CN201121685Y CN 201121685 Y CN201121685 Y CN 201121685Y CN U2007200463668 U CNU2007200463668 U CN U2007200463668U CN 200720046366 U CN200720046366 U CN 200720046366U CN 201121685 Y CN201121685 Y CN 201121685Y
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- CN
- China
- Prior art keywords
- bearing pin
- chain
- riveting
- riveted structure
- pin shaft
- 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 - Lifetime
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Abstract
The utility model provides a pin shaft riveting structure for the chain of a bicycle, and the structure has the advantages of high riveting strength, high production efficiency and low cost. The structure solves the problems that the prior spearhead-shaped rivet has low riveting strength, and the rotating type rivet or cinquefoil rivet has high cost and low efficiency. The pin shaft riveting structure is of a step shape with the middle being high and the two sides being low at the pin shaft end part.
Description
Technical field
The utility model relates to the bearing pin riveted structure of bicycle chain, especially for the bearing pin riveted structure of the bicycle shift chain of 18-21 speed.
Background technique
Traditional bicycle chain bearing pin riveted joint form mostly is " Eight characters " riveting, as shown in Figure 1, 2.The outer plate 0.34mm with its riveted joint is stretched out in the bearing pin end, and the intermediate portion of its end has the wide not riveting district of 2mm, and the both sides, end are the riveted joint district that becomes " Eight characters ".
The manufacturing efficiency of traditional Eight characters riveting is higher, and equipment is simple, and the riveting intensity of bearing pin and outer plate is lower, though can satisfy ordinary bicycle chain and the above riveted joint requirement of 18 speed from bicycle chain, to the above chain of 18 speed, riveting intensity can not satisfy.Mainly be following 2 reasons.1, the above chain hinge pin length of 18 speed is 7.3mm, and 18 speed are 7.8mm with the bearing pin length of lower chain, increase the riveted joint difficulty of bearing pin.2,18 speed are appeared size (length of outer plate outer surface is stretched out in the bearing pin end) than 18 speed above little by 0.25 (monolateral) with the bearing pin of lower chain, simultaneously the above chain speed variator systems of 18 speed than 15 speed with about speed variator system many 1-2 flywheel, the suffered lateral force of chain outer plate is bigger than 15 speed, the speed variator system of 15 speed be it is generally acknowledged more than the 780N, and the above chain of 18 speed requires the above skill of 950N to require to improve.
Some producer's bearing pin riveted joint form adopts revolves riveting or plum blossom riveting, but the cost of these two kinds riveted joint modes is higher, at first will increase manufacture difficulty on bearing pin, and these two kinds of riveted joint modes all are the some riveting in addition, need special device and manufacturing efficiency not high.
The model utility content
The utility model provides the bearing pin riveted structure of the low bicycle chain of a kind of riveting intensity height, manufacturing efficiency height and cost, its solved existing Eight characters riveting riveting intensity low, revolve riveting or plum blossom riveting cost height, inefficient problem.
The bearing pin riveted structure of this bicycle chain, the low stepped shape in high both sides in the middle of the bearing pin end becomes.
This riveted joint is a flush riveting, and the intermediate portion of bearing pin end is not riveting part, the both sides of bearing pin end is depressed outer plate is riveted.Because both sides are lower than middle, so this structure is compared when the identical rolling reduction with Eight characters riveting, the swell increment of bearing pin is big, preserves the riveting intensity of having demonstrate,proved bearing pin and outer plate.
The utility model by changing the riveted joint form of bearing pin, improves the riveting intensity of bearing pin and outer plate under the condition of existing manufacturing technique and relevant device, guarantee the usability of chain, has guaranteed manufacturing efficiency simultaneously.
As the improvement to above-mentioned riveted structure, the centre of bearing pin end stepped portion exceeds 0.15-0.25mm than both sides.
As the improvement to above-mentioned riveted structure, the outer plate outer surface 0.10-0.18mm with its riveted joint is stretched out in the both sides of described bearing pin end stepped portion.
As the improvement to above-mentioned riveted structure, the intermediate portion width of described bearing pin end stepped shape is 1.8-2.2mm.
The utility model provides the bicycle chain of the outer plate that comprises inner plate, bearing pin, rivets by above-mentioned riveted structure with bearing pin simultaneously.
Description of drawings
Fig. 1 is existing Eight characters riveting riveted structure schematic representation.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the utility model riveted structure schematic representation.
Fig. 4 is the left view of Fig. 3.
Embodiment
Shown in Fig. 3,4, the bearing pin riveted structure of bicycle chain, the low stepped shape in high both sides in the middle of bearing pin 1 end becomes, intermediate portion 2 exceeds 0.2mm than two side portions 3, two side portions is stretched out the outer plate 4 outer surface 0.14mm with its riveted joint, that is to say that it is 0.34mm that the length of outer plate 4 is stretched out in the bearing pin end.Intermediate portion 2 width are 2mm.This riveted joint is a flush riveting, and not riveting of bearing pin part (intermediate portion) guarantees that 2mm is wide, two side portions is depressed outer plate is riveted.Through test, bearing pin is applied the axial force of 1000N, bearing pin does not separate with outer plate.
Claims (6)
1. the bearing pin riveted structure of bicycle chain is characterized in that: the low stepped shape in high both sides in the middle of the bearing pin end becomes.
2. according to the described riveted structure of claim 1, it is characterized in that: the centre of described bearing pin end stepped portion exceeds 0.15-0.25mm than both sides.
3. according to the described riveted structure of claim 1, the outer plate outer surface 0.10-0.18mm with its riveted joint is stretched out in the both sides of described bearing pin end stepped portion.
4. according to the described riveted structure of claim 1, the intermediate portion width of described bearing pin end stepped shape is 1.8-2.2mm.
5. bicycle chain, comprise inner plate, bearing pin, with the outer plate of bearing pin riveted joint, it is characterized in that: the bearing pin riveted structure is: the low stepped shape in high both sides in the middle of the bearing pin end becomes.
6. according to the described bicycle chain of claim 5, the length that outer plate is stretched out in the bearing pin end is 0.34mm, and the centre of bearing pin end stepped portion exceeds 0.2mm than both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200463668U CN201121685Y (en) | 2007-09-26 | 2007-09-26 | Pin shaft riveted structure of bicycle chain and corresponding chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200463668U CN201121685Y (en) | 2007-09-26 | 2007-09-26 | Pin shaft riveted structure of bicycle chain and corresponding chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121685Y true CN201121685Y (en) | 2008-09-24 |
Family
ID=40008912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200463668U Expired - Lifetime CN201121685Y (en) | 2007-09-26 | 2007-09-26 | Pin shaft riveted structure of bicycle chain and corresponding chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121685Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838502A (en) * | 2017-11-29 | 2019-06-04 | 超汇桂盟传动（苏州）有限公司 | The chain rivet of chain |
-
2007
- 2007-09-26 CN CNU2007200463668U patent/CN201121685Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838502A (en) * | 2017-11-29 | 2019-06-04 | 超汇桂盟传动（苏州）有限公司 | The chain rivet of chain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080924 |
|
| CX01 | Expiry of patent term |