CN2157131Y - Bicycle with hole-rod type transmission mechanism - Google Patents

Abstract

The utility model relates to a bicycle with a hole-rod type transmission mechanism, mainly comprising a frame, wheels, a handle bar, a bicycle seat, and a transmission mechanism, wherein, the transmission mechanism is composed of a large wheel disc 1, a small fly wheel 2, a connecting rod 3, a front tooth head 4, a back tooth head 5, and a bearing 6, the columnar teeth of the front tooth head 4 are arranged at the inner side of the large wheel disc 1 and engaged with the holes of the large wheel disc, and the columnar teeth of the back tooth head 5 are arranged at the outer side of the small fly wheel 2 and engaged with the holes of the small fly wheel. Compared with a bicycle with chain transmission, the bicycle with a hole-rod type transmission mechanism has the advantages of simple structure and low cost. The problems that the chain is easily shed and dirtied and the edges of the trousers are easily twisted by the chain can be avoided.

Description

Bicycle with hole-rod type transmission mechanism

The utility model relates to a kind of improved bicycle, is a kind of bicycle that has the hole-rod type transmission device specifically.

Existing bicycle, its driving system are the sprocket wheel chain structure substantially.Sprocket wheel chain drive mechanism complexity, the cost height, chain easily comes off in the use.For avoiding chain to make dirty or twisting firmly trousers angle, need install chain cover additional.It is heavy that chain cover, especially big chain cover seem, adjusting has improper meeting to make a noise slightly; Wiping tries, maintenance is very inconvenient.

The purpose of this utility model is the sprocket wheel chain gearing that changes traditional bicycle, provides a kind of easy to process, in light weight, for ease of maintenaince, the bicycle of the little hole-rod type transmission device that rubs.

The utility model is achieved in that the bicycle of hole-rod type transmission device is the same with standard bicycle, mainly is made of vehicle frame, wheel, handlebar, vehicle seat and transmission device.Be that with the difference of standard bicycle its transmission device is not sprocket wheel link chain mechanism but a kind of mechanism of hole-rod type transmission.The hole-rod type transmission device mainly is made up of big trochal disc 1, small flywheel 2, connecting rod 3, nipper head 4, rear tooth-head 5 and bearing 6.Preceding rear tooth- head 4,5 is for circumferentially having the little runner of columnar tooth, the likeness in form miniature gears.Small flywheel 2 and big trochal disc 1 have the equidistant circular hole of a circle along wheel along the circumference outer.The pitch-row of circular hole equates with the pitch of the columnar tooth of rear tooth-head 5, nipper head 4 respectively.Front and rear teeth head 4,5 is contained in the two ends of connecting rod 3, and small flywheel 2 is contained on the bicycle rear axle, and big trochal disc 1 is contained on the bicycle middle shaft.Two bearings 6 are housed on the connecting rod 3, bearing 6 links to each other with the back vent of bicycle by bearing seat, preferably the outer ring of connecting rod 3 by bearing 6 is contained in the right breeches pipe of back vent inside, assembling rear linking rod 3 axis should with the line of small flywheel 2, big trochal disc 1 on a horizontal surface, and the columnar tooth of nipper head 4 is in the inboard of big trochal disc 1 and the hole engagement of big trochal disc, and the columnar tooth of rear tooth-head 5 is in the outside of small flywheel 2 and the hole engagement of small flywheel.Mesh in small flywheel 2 outsides for ease of rear tooth-head 5 and small flywheel 2, one on the right side of back fork of bicycle, its end near small flywheel should have an outside bending, reserves a space of laying rear tooth-head 5.

During work, crank 7 drives big trochal discs 1 and rotates, and big trochal disc 1 drives nipper head 4 and rotates, and drives small flywheels 2 with the coaxial rear tooth-head 5 of nipper head 4 and rotates, and rotates thereby drive bicycle rear.

Fig. 1 is the front view of bicycle vent stem transmission device;

Fig. 2 is the birds-eye view that is contained in the hole-rod type transmission device on the back vent;

Fig. 3 is the assembling scheme drawing of nipper head 4, rear tooth-head 5 and connecting rod 3;

Fig. 4 is the scheme drawing of tooth head;

Compare with traditional bicycle, hole-rod type transmission mechanism is simple in structure, cost is low; Big trochal disc and small flywheel and the engagement of tooth head are reliable, can not come off; Firmly trousers angle can not made or twist to big trochal disc dirty.

Claims (2)

1, a kind of bicycle that has the hole-rod type transmission device mainly is made up of vehicle frame, wheel, handlebar, vehicle seat and transmission device, it is characterized in that said transmission device is a kind of hole-rod type transmission device; The hole-rod type transmission device mainly is made up of big trochal disc (1), small flywheel (2), connecting rod (3), nipper head (4), rear tooth-head (5) and bearing (6); Before rear tooth-head (4), (5) for circumferentially having the little runner of columnar tooth, small flywheel (2) and big trochal disc (1) have one to enclose equidistant circular hole along the circumference outer, the pitch-row of circular hole equates with the pitch of the columnar tooth of rear tooth-head (5), nipper head (4) respectively; Front and rear teeth head (4), (5) are contained in the two ends of connecting rod (3), and small flywheel (2) is contained on the rear axle of bicycle, and big trochal disc (1) is contained on the axis of bicycle; Two bearings (6) are housed on the connecting rod (3), and bearing (6) links to each other with the back vent of bicycle by bearing seat; The axis of connecting rod (3) should with the line of small flywheel (2), big trochal disc (1) on a horizontal surface, and the columnar tooth of nipper head (4) is meshed with the hole of big trochal disc in the inboard of big trochal disc (1), and the columnar tooth of rear tooth-head (5) is meshed with the hole of small flywheel in the outside of small flywheel (2); One on the right side of back fork of bicycle, its end near small flywheel should have an outside bending, to reserve a space of laying rear tooth-head (5).

2,, it is characterized in that the connecting rod (3) of hole-rod type transmission device is installed in the inside of the right breeches pipe of back vent by the outer ring of bearing according to the said bicycle that has the hole-rod type transmission device of claim 1.

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