automatic length-adjusting bicycle crank
阅读说明：本技术 一种自动调节长度的自行车曲柄 (automatic length-adjusting bicycle crank ) 是由 不公告发明人 于 2018-07-19 设计创作，主要内容包括：本发明涉及自行车曲柄,特别是一种骑车人在踩动脚蹬过程中能自动调节曲柄长度的一种自动调节长度的自行车曲柄。包括曲柄I,圆柱销,压缩弹簧,卡簧,曲柄II,连接杆和脚蹬。构思新颖、结构合理紧凑。(The invention relates to a bicycle crank, in particular to bicycle cranks capable of automatically adjusting the length of the crank in the process of pedaling by riders.)
The bicycle cranks capable of automatically adjusting the length comprise a crank I, a cylindrical pin, a compression spring, a clamp spring, a crank II, a connecting rod and a pedal, and are characterized in that the pedal is provided with pedal external threads, the connecting rod is provided with a connecting rod cylindrical hole, a clamp spring groove, a connecting rod cylinder and a connecting rod end, the crank I is provided with a crank I cylindrical hole, a strip-shaped groove, a guide rail groove, a cylindrical hole I and a cylindrical hole II, the crank II is provided with a guide rail, an inner hole I, a terminal, an installation groove and an inner thread I, the connecting rod cylinder is matched with the cylindrical hole I, the connecting rod cylinder is matched with the inner hole I, the connecting rod cylinder is matched with the cylindrical hole II, the pedal external threads are matched with the inner thread I, the terminal is matched with the strip-shaped groove, the guide rail is matched with the guide rail groove, the terminal is inserted into the strip-shaped groove, the guide rail is inserted into the guide rail groove, the cylinder is inserted from the cylindrical hole I, the clamp spring is installed into the cylindrical connecting rod, the compression spring is installed on the connecting rod cylinder, the connecting rod passes through the inner hole I, and the clamp spring is.
Technical Field
The invention relates to a bicycle crank, in particular to an type type bicycle crank capable of automatically adjusting the length of the crank when a cyclist pedals the pedal.
Background
The bicycle is very common travel tools, brings great convenience to the travel of common people, especially in recent years, public bicycles and shared bicycles appear to step and push and popularize bicycles, however, the length of a common bicycle crank is fixed and cannot be adjusted, so that the bicycle cannot be well matched with riders with different heights, the use and enjoyment of the riders on the bicycle are affected, along with the enhancement of the whole body building desire and the environmental awareness, people select to ride the bicycle to go to and from work or to do short-distance travel in cities, and the improvement, perfection and improvement of steps on the existing bicycle crank are very necessary.
Disclosure of Invention
To this end, the present invention provides kinds of bicycle cranks with automatically adjustable length.
The technical scheme adopted by the invention is as follows:
the kinds of bicycle cranks capable of automatically adjusting length comprise a crank I, a cylindrical pin, a compression spring, a snap spring, a crank II, a connecting rod and pedals.
The pedal is provided with a pedal external thread.
The connecting rod is equipped with connecting rod cylinder hole, jump ring groove, connecting rod cylinder and connecting rod end.
The crank I is provided with a crank I cylindrical hole, a strip-shaped groove, a guide rail groove, a cylindrical hole I and a cylindrical hole II.
Crank II is equipped with guide rail, hole I, terminal, mounting groove and internal thread I.
The connecting rod cylinder is matched with the cylinder hole I. The connecting rod cylinder is matched with the inner hole I. The end of the connecting rod is matched with the cylindrical hole II. The pedal external thread is matched with the internal thread I. The terminal is matched with the strip-shaped groove. The guide rail is matched with the guide rail groove.
Inserting the terminal into the strip-shaped groove, inserting the guide rail into the guide rail groove, inserting the connecting rod cylinder from the cylindrical hole I, installing the clamp spring into the connecting rod cylinder, installing the compression spring on the connecting rod cylinder, penetrating the connecting rod cylinder through the inner hole I, moving the clamp spring into the clamp spring groove, aligning the connecting rod cylindrical hole with the crank I cylindrical hole and installing the cylindrical pin.
The invention has the beneficial effects that:
the kinds of bicycle cranks with the automatic length adjustment have novel conception and reasonable and compact structure.
Drawings
The following is further illustrated in with reference to the drawing of the present invention:
fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic view of the foot peg.
Fig. 4 is a schematic structural view of the connecting rod.
Fig. 5-6 are schematic structural views of the crank I.
Fig. 7 is a schematic structural view of the crank II.
In the figure, 1, a crank I, 2, a cylindrical pin, 3, a compression spring, 4, a snap spring, 5, a crank II, 6, a connecting rod, 7, a pedal, 8, external threads of the pedal, 9, a cylindrical hole of the connecting rod, 10, a snap spring groove, 11, a connecting rod cylinder, 12, a connecting rod end, 13, a cylindrical hole of the crank I, 14, a strip-shaped groove, 15, a guide rail groove, 16, a cylindrical hole II, 17, a guide rail, 18, an inner hole I, 19, a terminal, 20, an installation groove, 21, an internal thread I, 22 and a cylindrical hole I are arranged.
Detailed Description
The invention will now be described in further with reference to the drawings and examples, which are presently preferred embodiments of the invention.
Referring to fig. 1-2, the kinds of bicycle cranks with automatically adjusted lengths comprise the crank I1, the cylindrical pin 2, the compression spring 3, the snap spring 4, the crank II 5, the connecting rod 6 and the pedal 7.
As shown in fig. 3. The pedal 7 is provided with the pedal external thread 8.
As shown in fig. 4. The connecting rod 6 is provided with the connecting rod cylindrical hole 9, the
As shown in fig. 5-6. The crank I1 is provided with the
As shown in fig. 7. The crank II 5 is provided with the
The connecting rod cylinder 11 is matched with the cylinder hole I22. The connecting rod cylinder 11 is matched with the inner hole I18. The connecting
Inserting the
In use, when the rider's foot pushes the pedals 7 to rotate forward, the self-adjusting length bicycle cranks are extended, the arm of force is increased, and the torque is increased, thereby facilitating the acceleration of the bicycle, and when the rider's foot pushes the pedals 7 to the lowest point and rotates backward, the self-adjusting length bicycle cranks are automatically shortened under the action of the compression spring 3.
Accordingly, the present invention is not limited to the specific embodiments disclosed above, and modifications and variations of the present invention are intended to fall within the scope of the claims of the present invention.
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