CN204846262U - Concertina type bicycle crank - Google Patents
Concertina type bicycle crank Download PDFInfo
- Publication number
- CN204846262U CN204846262U CN201520540404.XU CN201520540404U CN204846262U CN 204846262 U CN204846262 U CN 204846262U CN 201520540404 U CN201520540404 U CN 201520540404U CN 204846262 U CN204846262 U CN 204846262U
- Authority
- CN
- China
- Prior art keywords
- handle
- fixed
- fixed handle
- movable handle
- type bicycle
- 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
Links
Abstract
The utility model provides a concertina type bicycle crank, including fixed handle, activity handle, the activity sleeve connect in in the fixed handle, the inside cavity that is equipped with of fixed handle be equipped with the slide rail along the circumferencial direction on the fixed handle inner wall be equipped with on the activity handle outer wall with slide rail assorted slider be fixed with the spring holder on the fixed handle wall at cavity top the top of activity handle is fixed with down the spring holder, go up the spring holder with be connected with the spring part down between the spring holder. The utility model discloses simple structure, the practicality is strong, and the orientation hard that the foot was followed to the crank in riding is with freedom in minor affairs is flexible greatly, and the messenger rides more laborsavingly.
Description
Technical field
The utility model relates to bicycle part field, is specifically related to a kind of concertina type bicycle crank.
Background technology
Bicycle pedal parts are assemblied on the left and right crank of middle axle, be one and translation power is converted into the device of turning effort, pedal force passes to pedal parts, crank shaft rotating crank, axis, chain flywheel, makes rear wheel, just forms laborsaving wheel shaft because pedal radius is greater than floral disc tooth radius, therefore crank is more long more laborsaving, but because leg during automobile is frequently upheld, bent, then will make when crank length is larger and uphold inconvenience, the laborsaving and comfortable effect coexisted can not be reached.
Utility model content
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is: a kind of concertina type bicycle crank, comprise fixed handle, movable handle, described movable handle is socketed in described fixed handle, described fixed handle top is provided with upper shaft hole that is vertical and described fixed handle, described movable handle bottom is provided with lower shaft hole that is vertical and described movable handle, it is characterized in that: described fixed handle inside is provided with cavity, described fixed handle inwall is along the circumferential direction provided with slide rail, described movable handle outer wall is provided with the slide block matched with described slide rail, the fixed handle wall of described cavity top is fixed with upper spring seat, lower spring cup is fixed with at the top of described movable handle, spring installation is connected with between described upper spring seat and described lower spring cup.
Further, be provided with circular orientation block bottom described fixed handle, the diameter of described locating piece equals the external diameter of described movable handle.
Further, cyclic spring packing ring is fixed with at described locating piece top.
Further, described slide rail extends to the bottom of described cavity from the top of described cavity, and the length of described slide block is less than the length of described slide rail.
Further, the fixed handle of described cavity top is along the circumferential direction provided with multiple screw, described spring perch is provided with the screw matched, by binding bolt, described spring perch is fixed on described fixed handle.
Further, be along the circumferential direction provided with multiple screw at described movable handle top, described spring perch is provided with the screw matched, by binding bolt, described lower spring cup is fixed on described movable handle.
The advantage that the utility model has and beneficial effect are:
1, the crank structure that provides of the utility model is simple, is slided reach flexible object by slide block on slide rail, when riding crank with the firmly size and Orientation of pin free-extension, not only laborsaving but also comfortable;
On the fixed handle of 2, cavity top and have additional spring between movable handle top, provide a kind of restoring force, make the slip between fixed handle and movable handle more freely, more laborsaving;
3, hollow in fixed handle, alleviates the weight of crank, reduces tooling cost;
4, be provided with locating piece bottom fixed handle, anti-limited slip block slippage place fixed handle, and locating piece is fixed with spring washer, avoid stretched slim slide block clash into locating piece and produce sense of discomfort.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the birds-eye view of fixed handle of the present utility model;
Fig. 3 is the birds-eye view of movable handle of the present utility model.
In figure: 1. fixed handle, 2. movable handle, 3. upper shaft hole, 4. lower shaft hole, 5. cavity, 6. slide rail, 7. slide block, 8. upper spring seat, 9. spring installation, 10. lower spring cup, 11. locating pieces, 12. spring washers.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.
As Fig. 1, Fig. 2, shown in Fig. 3, the utility model provides a kind of concertina type bicycle crank, comprise fixed handle 1, movable handle 2, described movable handle 2 is socketed in described fixed handle 1, described fixed handle 1 top is provided with upper shaft hole 3 that is vertical and described fixed handle 1, described movable handle 2 bottom is provided with lower shaft hole 4 that is vertical and described movable handle 2, described upper shaft hole 3 is connected with bicycle middle shaft, described lower shaft hole 4 is connected with stretcher mandrel, it is characterized in that: described fixed handle 1 inside is provided with cavity 5, described fixed handle 1 inwall is along the circumferential direction provided with slide rail 6, described movable handle 2 outer wall is provided with the slide block 7 matched with described slide rail 6, fixed handle 1 wall at described cavity 5 top is fixed with upper spring seat 8, lower spring cup 10 is fixed with at the top of described movable handle 2, spring installation 9 is connected with between described upper spring seat 8 and described lower spring cup 10.
Be provided with circular orientation block 11 bottom described fixed handle 1, the diameter of described locating piece 11 equals the external diameter of described movable handle 2, anti-limited slip block 7 slippage place fixed handle 1.
Be fixed with cyclic spring packing ring 12 at described locating piece 11 top, avoid stretched slim slide block 7 clash into locating piece 11 and produce sense of discomfort.
Described slide rail 6 extends to the bottom of described cavity 5 from the top of described cavity 5, and the length of described slide block 7 is less than the length of described slide rail 6, is beneficial to slide block 7 and slides in larger sliding scale, adapts to needed for the long people of different leg rides.
The fixed handle 1 at described cavity 5 top is along the circumferential direction provided with multiple screw, described upper spring seat 8 is provided with the screw matched, by binding bolt, described upper spring seat 8 is fixed on described fixed handle 1.
Along the circumferential direction be provided with multiple screw at described movable handle 2 top, described lower spring cup 10 is provided with the screw matched, by binding bolt, described lower spring cup 10 is fixed on described movable handle 2.
Above section Example of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (6)
1. a concertina type bicycle crank, comprise fixed handle (1), movable handle (2), described movable handle (2) is socketed in described fixed handle (1), described fixed handle (1) top is provided with upper shaft hole (3) that is vertical and described fixed handle (1), described movable handle (2) bottom is provided with lower shaft hole (4) that is vertical and described movable handle (2), it is characterized in that: described fixed handle (1) inside is provided with cavity (5), described fixed handle (1) inwall is along the circumferential direction provided with slide rail (6), described movable handle (2) outer wall is provided with the slide block (7) matched with described slide rail (6), fixed handle (1) wall at described cavity (5) top is fixed with upper spring seat (8), lower spring cup (10) is fixed with at the top of described movable handle (2), spring installation (9) is connected with between described upper spring seat (8) and described lower spring cup (10).
2. a kind of concertina type bicycle crank according to claim 1, it is characterized in that: described fixed handle (1) bottom is provided with circular orientation block (11), and the diameter of described locating piece (11) equals the external diameter of described movable handle (2).
3. a kind of concertina type bicycle crank according to claim 2, is characterized in that: be fixed with cyclic spring packing ring (12) at described locating piece (11) top.
4. a kind of concertina type bicycle crank according to claim 1, it is characterized in that: described slide rail (6) extends to the bottom of described cavity (5) from the top of described cavity (5), the length of described slide block (7) is less than the length of described slide rail (6).
5. a kind of concertina type bicycle crank according to claim 1, it is characterized in that: on the fixed handle (1) at described cavity (5) top, be along the circumferential direction provided with multiple screw, described upper spring seat (8) is provided with the screw matched, by binding bolt, described upper spring seat (8) is fixed on described fixed handle (1).
6. a kind of concertina type bicycle crank according to claim 1, it is characterized in that: be along the circumferential direction provided with multiple screw at described movable handle (2) top, described lower spring cup (10) is provided with the screw matched, by binding bolt, described lower spring cup (10) is fixed on described movable handle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540404.XU CN204846262U (en) | 2015-07-23 | 2015-07-23 | Concertina type bicycle crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520540404.XU CN204846262U (en) | 2015-07-23 | 2015-07-23 | Concertina type bicycle crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204846262U true CN204846262U (en) | 2015-12-09 |
Family
ID=54736837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520540404.XU Expired - Fee Related CN204846262U (en) | 2015-07-23 | 2015-07-23 | Concertina type bicycle crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204846262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622293A (en) * | 2018-06-14 | 2018-10-09 | 张翠 | A kind of inertia crank structure for bicycle |
-
2015
- 2015-07-23 CN CN201520540404.XU patent/CN204846262U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622293A (en) * | 2018-06-14 | 2018-10-09 | 张翠 | A kind of inertia crank structure 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160723 |