CN2126343U - Wirst pins - Google Patents
Wirst pins Download PDFInfo
- Publication number
- CN2126343U CN2126343U CN 92213802 CN92213802U CN2126343U CN 2126343 U CN2126343 U CN 2126343U CN 92213802 CN92213802 CN 92213802 CN 92213802 U CN92213802 U CN 92213802U CN 2126343 U CN2126343 U CN 2126343U
- Authority
- CN
- China
- Prior art keywords
- wedge
- pin
- crank
- plane
- wrist pin
- 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
Abstract
The utility model discloses a wrist pin which is used for fixing the parts of the wrists and bottom bracket axles of bicycles and tricycles, comprising a pin and countersunk a screw. The production of former wrists is implemented by the tapping of the wrist pin hole. The utility model has the advantages of beautiful appearance, convenient installation, and large bearing surface. Because the countersunk screw is screwed in the wrist pin hole, the case that trouser are hooked can be avoided, and a hammer nail is needed when the wrist pin is changed. People can feel more comfortable when riding the bicycles or the tricycles.
Description
The utility model relates to a kind of bicycle and tricycle of being used for, part---the crank pin of fixed crank and axis rod.
In the crank lock mode of existing bicycle and tricycle, be decided to be the master to move back the type pin lock of pulling out, other has the minority car type to adopt the side nut locking of axis hinge silk.Move back that to pull out type pin locking focusing surface little, be prone to spacious movingly by bike, and pin two ends grow the side plane of crank, very easily hook cyclist's trouser legs.In addition, change drawbacks such as inconvenience in addition.Axis hinge silk side lock mode because of it needs special crank and axis and present popular bicycle can not be general.
The utility model provides a kind of novel crank pin, can solve to move back the shortcoming of pulling out the type pin.
Fig. 1 is a structural representation of the present utility model.
The utility model is (as shown in the figure) of finishing as follows. Two sphenoids 1 of pin, 2, two sphenoids 1,2 inner surface are the inclined-plane, the outer surface of sphenoid 2 is the plane, the flat applying of this plane and bicycle middle shaft, the outer surface of sphenoid 1 is cambered surface, the garden arc in this garden cambered surface and crank pin for bicycle hole coincide, and sphenoid 1,2 two ends respectively are screwed with a countersunk head screw 3, so that two sphenoids 1,2 inclined-plane fit together and are in axial sliding until lock crank under the effect of two countersunk head screws 3. The tapping of crank pin hole two ends is so that fixing countersunk head screw.
When the utility model uses, the tapping of crank pin hole two ends is become screw, wedge-like body 1,2 is put into crank pin hole, make the outerplanar of wedge-like body 2 and axis is flat fits, the garden cambered surface is coincide in the outer garden cambered surface of wedge-like body 1 and the crank pin hole, and the two ends screw of two sunk screws 3 from crank pin hole is screwed into, and makes the interior inclined-plane of two wedge-like bodys 1,2 fit tightly and move axially, the working diameter of pin is swollen, play the effect of fixed crank.Simultaneously, because two sunk screws 3 are imbedded in the screw of crank hole, can not draw together trouser legs by hook.During dismounting, only need withdraw from one or both sides sunk screw 3, rock crank, promptly produce a radial pressure, the working diameter of pin is diminished, and produce slip, in crank pin hole, drop out pin.
Claims (2)
1, a kind of bicycle crank pin, it is made up of pin and sunk screw, it is characterized in that pin is two wedge-like bodys 1,2, the internal surface of two wedge-like bodys 1,2 is the inclined-plane, the outer surface of wedge-like body 2 is the plane, this plane and bicycle middle shaft are flat to fit, the outer surface of wedge-like body 1 is the garden cambered surface, the garden cambered surface of this garden cambered surface and bicycle crank pin-and-hole is fitted, the two ends of wedge-like body 1,2 respectively are screwed with a sunk screw 3, make the inclined-plane of two wedge-like bodys 1,2 coincide together under the effect of two sunk screws 3 and are in axial sliding until the locking crank.
2, crank pin according to claim 1 is characterized in that the tapping of crank pin hole two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213802 CN2126343U (en) | 1992-05-05 | 1992-05-05 | Wirst pins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213802 CN2126343U (en) | 1992-05-05 | 1992-05-05 | Wirst pins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2126343U true CN2126343U (en) | 1992-12-30 |
Family
ID=4958458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92213802 Pending CN2126343U (en) | 1992-05-05 | 1992-05-05 | Wirst pins |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2126343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573541B (en) * | 2006-10-19 | 2013-11-20 | 天际起重机科技有限公司 | Coupling pin and method of use thereof |
-
1992
- 1992-05-05 CN CN 92213802 patent/CN2126343U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573541B (en) * | 2006-10-19 | 2013-11-20 | 天际起重机科技有限公司 | Coupling pin and method of use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |