CN2113233U

CN2113233U - Two axles bicycle

Info

Publication number: CN2113233U
Application number: CN 92212078
Authority: CN
Inventors: 周君毅
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-14
Filing date: 1992-01-14
Publication date: 1992-08-19

Abstract

The utility model relates to a two-axle bicycle belonging to a man-power means of transportation, which adopts the structural form that a middle axle and a rear shaft form a sleeve axle, and changes the chain drive mode into the gear drive mode. The gear driving structure can be an epicyclic gear train driving structure, or can be a fixed axle gear train driving structure. The casing of a gear train is connected with a rear wheel by a steel wire. During driving motion, only a crank shaft need to be stepped by feet, and the rear wheel can be driven to rotate by gear drive to realize the purpose of bicycle running. The utility model has the characteristics of compact structure, high transmission efficiency, safety, reliability, etc., and is especially suitable to be adopted in racing bicycles.

Description

Two axles bicycle

The utility model belongs to a kind of manpower transportation.

At present, institute's general-duty bicycle all is to adopt the step axis between front and back wheel, leans on the version of chain gear when advancing.Thisly drive the bicycle of wheel revolutions by axis by sprocket wheel and chain, complex structure, transmission line length, scantling of structure are huge first, are not easy to maintaining and efficient is undesirable; Second the structure of this chain gear is dangerous, the accident that sprocket wheel is stabbed cyclist's pin often occurs, thereby necessary the improvement.

Purpose of the present invention is exactly to design a kind of two shaft type bicycles that do not have the high efficiency transmission of chain at the deficiency of existing bicycle, in the hope of dwindling scantling of structure, improves the reliability and the safety of mode of motion, and the easy care maintenance.

According to the technology implementation scheme that purpose of the present invention proposed is to adopt gear drive to replace chain gear, and axis and rear axle are designed to a concentric sleeve, and axis gets final product the direct drive trailing wheel by different gear train speed changes, drives bicycle and advances.

The utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model gear transmission schematic diagram;

Fig. 3 is the another embodiment schematic diagram of the utility model gear transmission;

Fig. 4 is the another embodiment schematic diagram of the utility model gear transmission;

Fig. 5 is the utility model gear transmission variable ratio schematic diagram.

The utility model comprises front-wheel (1), trailing wheel (2), front fork (3), handle (4), spider (5), back vent (6), seat (7) and stretcher parts such as (8) as can be seen from accompanying drawing.It is characterized in that axis (10) and rear axle (11) are a concentric sleeve, axis (10) kink is in rear axle (11), and the drive connection of axis (10) and rear axle (12) is gear transmission structure (9).This gear transmission structure can be epicyclic train drive mechanism (as Fig. 2, shown in Figure 3), also can be that dead axle is drive mechanism (as shown in Figure 4).

The keystone configuration that epicyclic train is traditional is, drive a transmission tie-rod (14) that is connected with on the coupled outer garden of flywheel (13) by turning axle (12), have in two planetary wheels (15), (16) at the two ends kink of tie-rod (14) and to nibble mutually, nibble mutually with fixed gear wheel (18) outward with sun wheel (17).The outer garden of sun wheel (17) links to each other with trailing wheel by steel wire, after turning axle (12) drive flywheel (13) rotation, must drive tie-rod (14) and planetary wheel (15), (16) rotation simultaneously, and planetary wheel (16) rolls around fixed gear wheel (18) on the one hand, driving sun wheel (17) again on the one hand rotates, rotate thereby drive trailing wheel, realize the purpose that bicycle is advanced.

Fig. 3 has provided the another embodiment of the utility model epicyclic train structure, its transmission principle is: be fixed with a sun wheel (20) on flywheel (19), sun wheel (20) is nibbled mutually with planetary wheel (21), installing on the axle (22) of planetary wheel (21) planetary wheel (23) that is connected as a single entity is housed in addition, planetary wheel (23) is nibbled mutually with fixed gear wheel (24), the tie-rod of epicyclic train (25) is a planetary gear bearing (21,23) whole casing (25), when turning axle (26) drive flywheel (19) and sun wheel (20) rotation, planetary wheel (21,23) then must rotate, and roll around sun wheel (20) and fixed gear wheel (24), thereby driving tie-rod (25) rotates, the cylindrical of tie-rod (25) is connected with trailing wheel by steel wire, so trailing wheel must rotate with tie-rod (25), thereby reaches the purpose that bicycle is advanced.

This gear-driven bicycle also can be made the bicycle (as shown in Figure 4) of fixed shaft gear train transmission.In the bicycle of this kind fixed axis gear transmission, be fixed with a gear (27) on the cylindrical of flywheel (34), gear (27) is nibbled mutually with gear (28).And gear (28) is packed on the same dead axle (30) with gear (29), and gear (29) is nibbled mutually with gear (31), gear (31) is connected with a shell (35), and shell (35) can link to each other with trailing wheel by steel wire, and dead axle (30) is fixed on the vehicle frame by tie-rod (32).

Above-mentioned various gear-driven bicycle all can recently be realized present speed of a motor vehicle requirement by selecting certain gear for use.For " 28 type " bicycle, ratio of number of teeth generally selects for use 2:4 to get final product.And fasten at gear wheel and to make the bicycle (as shown in Figure 5) that the certain structure change also can realize the variable ratio gear transmission.This kind variable ratio gear structure has a castellated shaft (37) for turning axle in (36), and spline tooth wheels (38) are arranged on the castellated shaft, and gear cluster (38) can move axially along turning axle (36), and as the sun wheel of planet circular system.On yoke (39), be set with the tie-rod hub (40) of a planet circular system, hub (40) is equipped with a rotating planet wheel spindle (41), be fixed with two pairs of compound planet gears (42 on the planet wheel spindle, 43), wherein gear cluster (42) is nibbled mutually with gear cluster (38), gear cluster (43) is then nibbled mutually with fixed teeth wheels (45), fixed teeth wheels (43) are sleeved on the vehicle frame axle (46) by spline (44), can move axially along the vehicle frame axle, the principle of speed change transmission is: when turning axle when stepping, gear cluster (38) can be chosen a gear wantonly and be meshed with the corresponding gear of gear cluster (42), and drive planet wheel spindle (41) and gear cluster (43) rotate, when the selected good gear of fixed teeth wheels (45) and gear cluster (43) overmask mutually, then gear cluster (43) must roll around fixed teeth wheels (45) simultaneously in rotation, thereby driving hub (40) rotates, owing to link to each other with trailing wheel by steel wire on hub (40) cylindrical, so trailing wheel (2) also will rotate thereupon, thereby reach the purpose that bicycle is advanced.This speed-changing mechanism can be realized the shift of nine kinds of speed, has been the requirement that can satisfy all kinds of bicycles fully, and we also can adjust the change-gear set number as required, also can realize the derailleur of three kinds, six kinds speed, selects for use for the user.

The gear-driven bicycle of this kind, short, compact conformation itself, and efficient is higher than chain drive, compares with the chain driving bicycle, has obvious advantage, and particularly as racing car, effect must be better.

Claims

1, diaxon bicycle, comprise front-wheel, trailing wheel, front fork, back vent, seat and stretcher, spider, it is characterized in that axis (10) and rear axle (11) are a concentric sleeve, axis (10) kink is in rear axle (11), and the drive connection of axis (10) and rear axle (11) is a gear transmission structure.

2, bicycle as claimed in claim 1 is characterized in that the axis (10) and the gear transmission structure of rear axle (11) can be the epicyclic train drive mechanisms, also can be the fixed shaft gear train drive mechanism.

3, as claim 1 and 2 described bicycles, its feature is that also the epicyclic train structure is to be connected with a transmission tie-rod (14) on the outer garden of flywheel (13), at the two ends of tie-rod kink two planetary wheels (15,16) are arranged, nibble mutually with sun wheel (17) in the planetary wheel (15,16), nibble mutually with fixed gear wheel (18) outward, the cylindrical of sun wheel (17) links to each other with trailing wheel (2) by steel wire.

4, as claim 1 and 2 described bicycles, it is characterized in that the epicyclic train structure can also be to install sun wheel (20) on the flywheel (19), sun wheel (20) is nibbled mutually with planetary wheel (21), on the axle (22) a planet gear (23) is housed in addition installing of planetary wheel (21) and nibbles mutually, and tie-rod (25) is the whole casing of planetary gear bearing (21,23) with fixed gear wheel (24).

5, as claim 1 and 2 described bicycles, it is characterized in that gear transmission structure is the fixed shaft gear train drive mechanism, on the cylindrical of flywheel (34), be fixed with a gear (27), gear (27) is nibbled mutually with gear (28), and gear (28) is packed on the same dead axle (30) with gear (29), and gear (29) is nibbled mutually with gear (31), gear (31) is connected with a shell (35), shell (35) links to each other with trailing wheel by firm silk, and dead axle (30) is fixed on the vehicle frame by tie-rod (32).

6, as claim 1 and 2 described bicycles, it is characterized in that: the sun wheel that turns on the axle (36) is a gear cluster (38), and by spline (37) with turn the axle be connected, fixed gear wheel also is to link to each other with vehicle frame (39) by spline (44) for gear cluster (45) also, and its satellite gear also is gear cluster (42) that matches with sun wheel and the gear cluster (43) that matches with fixed teeth wheels (45).