Hollow integrated chain wheel crank
A sprocket crank, integrated technology, applied in the field of cranks, can solve the problems of crank corrosion, crank damage, heavy crank weight, etc., to avoid corrosion, easy to use, and reduce weight.
Inactive Publication Date: 2020-01-07
扬州创盟自行车配件有限公司
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Problems solved by technology
[0002] Cranks are used in the parts of bicycles. The cranks can drive the sprockets of the bicycle to cooperate with each other to make the bicycle run more efficiently. However, many cranks are too heavy when used, which makes the bicycle ride as a whole. It needs to consume a lot of physical strength of the rider, and some cranks are hollow, but the inside of the crank is easy to rust, especially if moisture enters, causing damage to the inside of the crank
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Embodiment Construction
[0013] Hollow integrated sprocket crank, provided with a crank rod 1, a connecting sleeve 2 is arranged at both ends of the crank rod 1, a connecting ring 3 is embedded in the connecting sleeve 2, and a ball 4 is arranged on the outside of the connecting ring 3, and the crank 1 A hollow cavity 5 is provided on the inner side of the hollow cavity 5, a ventilating plate 6 is arranged at the upper end of the hollow cavity 5, and an air exchange channel 7 is arranged at the lower end of the air permeable plate 6. Breathable panels.
[0014] The air-permeable plate 6 is provided with air-permeable meshes 8, and the air-permeable meshes 8 are evenly distributed on the outside of the air-permeable plate.
[0015] The air exchange channel 7 is provided with an air exchange port 9, and the air exchange port 9 is a bell mouth.
[0016] The outside of the crank rod 1 is provided with an anti-skid bracket 10 , and the anti-skid bracket 10 is provided with anti-skid nails 11 .
[0017] A...
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A hollow integrated chain wheel crank is provided with a crank lever, and connecting sleeves are arranged at the two ends of the crank lever. Connecting rings are embedded into the connecting sleeves,and balls are arranged on the outer sides of the connecting rings. A hollow cavity is formed in the crank, and a permeable plate is arranged at the upper end of the hollow cavity. A ventilation channel is arranged at the lower end of the permeable plate, the ventilation channel and the permeable plate are welded, and the ventilation channel communicates with the permeable plate. The hollow cavityis formed in the crank, and therefore the weight of the crank can be further reduced, and the crank is more convenient to use; and the ventilation channel is arranged in the hollow cavity, and therefore air convection can be met, air is made to enter the crank, and corrosion in the crank is avoided.
Description
technical field [0001] The invention relates to a crank, in particular to a hollow integrated sprocket crank. Background technique [0002] Cranks are used in the components of bicycles. The cranks can drive the sprockets of the bicycle to cooperate with each other to make the bicycle run more efficiently. However, many cranks are too heavy when used, which makes the bicycle ride as a whole. It needs to consume a lot of physical strength of the rider, and although some cranks have a hollow structure, the inside of the crank is easy to rust, especially if moisture enters, causing damage to the inside of the crank. Contents of the invention [0003] The object of the present invention is to provide a hollow integral sprocket crank with simple structure and good air permeability. [0004] The technical solution of the present invention is: a hollow integrated sprocket crank, provided with a crank rod, connecting sleeves are arranged at both ends of the crank rod, a connectin...
Claims
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IPC IPC(8): B62M3/00
CPCB62M3/00
Inventor 何光荣许开明
Owner 扬州创盟自行车配件有限公司