CN212074327U - Ultra-light high-strength carbon fiber bicycle crank - Google Patents
Ultra-light high-strength carbon fiber bicycle crank Download PDFInfo
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- CN212074327U CN212074327U CN202020537018.6U CN202020537018U CN212074327U CN 212074327 U CN212074327 U CN 212074327U CN 202020537018 U CN202020537018 U CN 202020537018U CN 212074327 U CN212074327 U CN 212074327U
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- carbon fiber
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Abstract
The utility model discloses an ultra-light high strength carbon fiber bicycle crank, including the sprocket dish, the sprocket dish is connected with the change gear dish through the chain main part, and the both ends of sprocket dish are connected with the running-board through the crank main part, the crank main part is fixed mutually with the sleeve pipe main part through fixing chuck, and the inside of crank main part is provided with the gomphosis groove, the crank main part is connected with the shell body through the gomphosis groove, and the shell body is fixed mutually through the inside of fastening nut with the crank main part, the sleeve pipe main part is provided with the fastening shaft collar with the articulated department of crank main part, and one side of sleeve pipe main part is fixed mutually through fastening snap ring and. The utility model discloses an to the inside hollow structural design of carbon fiber that adopts of crank main part, make it possess the light advantage of structural strength high quality, carry out the portable equipment to crank main part and running-board connection position department simultaneously, it is inseparable to possess the connection, the structure stabilizes and the swift advantage of simple to operate.
Description
Technical Field
The utility model relates to a bicycle crank technical field specifically is an ultralight high strength carbon fiber bicycle crank.
Background
Loose cranks often make a clicking sound. When the crank problem is detected, the crank is firstly rotated to the horizontal position, the cranks at the two sides are pressed downwards by force, then the crank is rotated for 180 degrees, and the same action is repeated. If the crank will shake, the crank fixing bolt should be fastened. The cranks of new bicycles are subjected to such checks frequently. The problem with cranks is well understood to be that people of different heights have different legs and they should not use cranks of the same length while riding a bicycle. Since the same length of crank is equivalent to letting the legs of different lengths draw a circle of the same radius, if this circle is large (crank length), the smaller leg with the shorter leg is not suitable; if the handle is short, the large hair cannot be forced. Most people feel uncomfortable for riding the bicycle, but cannot say the reason. However, if they know the above, the driver can clearly know which one is suitable for himself by riding out the crankshafts of the bicycle twice respectively.
The existing bicycle crank is low in structural strength, heavy and infirm in installation, so that a novel ultra-light high-strength carbon fiber bicycle crank is urgently needed to be developed in the market.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ultralight high strength carbon fiber bicycle crank to current bicycle crank structural strength who proposes in solving above-mentioned background art is low and comparatively heavy, installs insecure problem simultaneously.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an ultra-light high strength carbon fiber bicycle crank, includes the sprocket dish, the sprocket dish is connected with the change gear dish through the chain main part, and the both ends of sprocket dish are connected with the running-board through the crank main part, the crank main part is fixed mutually through fixing chuck and sleeve pipe main part, and the inside of crank main part is provided with the gomphosis groove, the crank main part is connected with the shell body through the gomphosis groove, and the shell body is fixed mutually through fastening nut and the inside of crank main part, the articulated department of sleeve pipe main part and crank main part is provided with the fastening shaft collar, and one side of sleeve pipe main part is fixed mutually through fastening snap.
Preferably, the pedal is fixed to the crank body by a bolt fastener.
Preferably, the fastening collar is threadedly engaged with the cannula body.
Preferably, a fastening washer is disposed at a connection portion of the fastening snap ring and the fitting groove.
Preferably, a fixing sleeve is arranged at the joint of the sleeve main body and the fastening snap ring.
Preferably, the crank main body is internally provided with a carbon fiber hollow structure.
Compared with the prior art, the beneficial effects of the utility model are that:
the inside carbon fiber hollow structure that is of crank main part, through to the inside carbon fiber hollow structure design that adopts of crank main part, make it possess the light advantage of structural strength high quality, the articulated department of sleeve main part and crank main part is provided with the fastening axle collar, the fastening axle collar connects through the screw with the sleeve main part soon, it connects the mode soon to utilize the screw to connect soon and installs fixedly, possess and connect the convenient advantage of closely assembling and disassembling, the fastening snap ring is provided with the fastening washer with the junction in gomphosis groove, the fastening washer can firmly be fixed the junction, through carrying out portable equipment to crank main part and running-board junction department, it is inseparable to possess the connection, the structure stabilizes and the swift advantage of simple to operate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the main structure of the crank of the present invention;
fig. 3 is a schematic view of the mounting structure of the crank main body of the present invention.
In the figure: 1. a variable speed gear plate; 2. a chain body; 3. a sprocket plate; 4. a foot pedal; 5. a crank body; 6. a cannula body; 7. fixing the chuck; 8. an outer housing; 9. fastening a nut; 10. a fitting groove; 11. a fastening washer; 12. fastening the snap ring; 13. fixing a sleeve; 14. a fastening collar; 15. and (5) fixing the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the present invention provides an embodiment: a bicycle crank with ultra-light weight and high strength carbon fiber comprises a chain wheel disc 3 and is characterized in that the chain wheel disc 3 is connected with a speed changing gear disc 1 through a chain main body 2, two ends of the chain wheel disc 3 are connected with pedals 4 through a crank main body 5, the crank main body 5 is fixed with a sleeve main body 6 through a fixing chuck 7, an embedding groove 10 is formed in the crank main body 5, the crank main body 5 is connected with an outer shell 8 through the embedding groove 10 and is installed and fixed in an embedding mode, the bicycle crank has the advantages of being convenient and fast to assemble, the outer shell 8 is fixed with the inner part of the crank main body 5 through a fastening nut 9, a fastening shaft collar 14 is arranged at the hinged position of the sleeve main body 6 and the crank main body 5, one side of the sleeve main body 6 is fixed with the inner part of the embedding groove 10 through a fastening snap ring 12, possesses the advantages of tight connection, stable structure and convenient and fast installation.
Further, the pedal plate 4 is fixed to the crank body 5 by a bolt fastening member 15.
Furthermore, the fastening collar 14 and the sleeve main body 6 are screwed through threads, and are installed and fixed in a threaded screwing mode, so that the sleeve has the advantage of being convenient to connect, tightly assemble and disassemble.
Further, a fastening washer 11 is provided at a connection portion between the fastening snap ring 12 and the fitting groove 10, and the fastening washer 11 can firmly fix the connection portion.
Further, a fixing sleeve 13 is arranged at the joint of the sleeve main body 6 and the fastening snap ring 12.
Further, the inside carbon fiber hollow structure that is of crank main part 5 makes it possess the light advantage of structural strength high quality through adopting carbon fiber hollow formula structural design to crank main part 5 is inside.
The working principle is as follows: when in use, the crank main body 5 is fixed with the sleeve main body 6 through the fixing chuck 7, the inner part of the crank main body 5 is provided with the embedding groove 10, the crank main body 5 is connected with the outer shell 8 through the embedding groove 10, the installation and the fixation are carried out by utilizing the embedding way, the advantage of convenient and fast assembly is provided, the hinged part of the sleeve main body 6 and the crank main body 5 is provided with the fastening shaft collar 14, the fastening shaft collar 14 is screwed with the sleeve main body 6 through the screw thread, the installation and the fixation are carried out by utilizing the screw thread screwing way, the advantage of convenient connection and close assembly and disassembly is provided, one side of the sleeve main body 6 is fixed with the inner part of the embedding groove 10 through the fastening snap ring 12, the joint of the fastening snap ring 12 and the embedding groove 10 is provided with the fastening washer 11, the fastening washer 11 can firmly fix the joint, the joint, the advantage that the structure is firm and simple to operate is swift, and 5 insides of crank main part are carbon fiber hollow structure, through to 5 inside carbon fiber hollow structural design that adopt of crank main part, make it possess the light advantage of structural strength high quality.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. An ultra-light high-strength carbon fiber bicycle crank comprises a chain wheel disc (3) and is characterized in that, the chain wheel disc (3) is connected with the speed change gear disc (1) through the chain main body (2), two ends of the chain wheel disc (3) are connected with the pedal (4) through the crank main body (5), the crank main body (5) is fixed with the sleeve main body (6) through a fixed chuck (7), a tabling groove (10) is arranged in the crank main body (5), the crank main body (5) is connected with the outer shell (8) through the embedded groove (10), the outer shell (8) is fixed with the inside of the crank main body (5) through the fastening nut (9), and a fastening shaft ring (14) is arranged at the hinged part of the sleeve main body (6) and the crank main body (5), and one side of the sleeve main body (6) is fixed with the inside of the embedding groove (10) through a fastening snap ring (12).
2. The ultra-light weight high strength carbon fiber bicycle crank of claim 1, wherein: the pedal (4) is fixed with the crank body (5) through a bolt fastener (15).
3. The ultra-light weight high strength carbon fiber bicycle crank of claim 1, wherein: the fastening collar (14) is screwed with the sleeve main body (6) through threads.
4. The ultra-light weight high strength carbon fiber bicycle crank of claim 1, wherein: and a fastening washer (11) is arranged at the joint of the fastening snap ring (12) and the embedding groove (10).
5. The ultra-light weight high strength carbon fiber bicycle crank of claim 1, wherein: the joint of the sleeve main body (6) and the fastening snap ring (12) is provided with a fixed sleeve (13).
6. The ultra-light weight high strength carbon fiber bicycle crank of claim 1, wherein: the crank main body (5) is internally of a carbon fiber hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020537018.6U CN212074327U (en) | 2020-04-13 | 2020-04-13 | Ultra-light high-strength carbon fiber bicycle crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020537018.6U CN212074327U (en) | 2020-04-13 | 2020-04-13 | Ultra-light high-strength carbon fiber bicycle crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212074327U true CN212074327U (en) | 2020-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020537018.6U Active CN212074327U (en) | 2020-04-13 | 2020-04-13 | Ultra-light high-strength carbon fiber bicycle crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212074327U (en) |
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2020
- 2020-04-13 CN CN202020537018.6U patent/CN212074327U/en active Active
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