CN2106783U

CN2106783U - Rocker-bar bicycle

Info

Publication number: CN2106783U
Application number: CN91225886U
Authority: CN
Inventors: 陈鸿林
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-09-29
Filing date: 1991-09-29
Publication date: 1992-06-10

Abstract

The utility model discloses a rocker-bar bicycle. A rear wheel is arranged between two fork frames of a rear frame, and the outer sides of a left and a right fork frames are provided with internal gears. The internal gears (4) are connected with a rocker bar (5). External gears (3) can drive the rear wheel through respective flywheel clutches. A bottom frame (11) is connected with the front and the rear fork frames of the rear wheel. A spring (24) is connected between the rear fork frame and the rocker bar. A left and a right foot pedals are connected with pedals, and the rocker bar swing back and forth to drive the bicycle to run. The utility model has the advantages of labor saving, fast speed, light weight, low cost, long service life, simple structure, easy assemblage, convenient maintenance, easy riding, etc.

Description

Rocker-bar bicycle

Rocker-type bicycle is a kind of later-model bicycle.

Existing bicycle is driven by chain-driving, and is not only heavy, and quick abrasion.

The purpose of this utility model is a kind of rocker-type bicycle of driving with the annulus transmission of design.

To achieve these goals, designed the bicycle that comprises original handlebar, wheel, vehicle frame, saddle and pedal, it is characterized in that: rear wheel is installed in two crotch of back vehicle frame, annulus is installed in the crotch outside, the left and right sides respectively, wherein inner gear connects with rocking bar, and external gear carries out transmission by flywheel clutch separately to rear wheel.

Bicycle of the present utility model, its major advantage is: laborsaving, quick, in light weight, cost is low, the life-span is long, simple in structure, maintenance is convenient, behaviour's car is free and relaxed.

Accompanying drawing has been described an embodiment of the present utility model.

Fig. 1, rocker-type bicycle schematic appearance;

The assembly drowing of Fig. 2, annulus and rocking bar (5);

The constructional drawing of Fig. 3, underframe (11);

The assembly drowing of Fig. 4, torsion spring (14);

The assembly drowing of Fig. 5, left and right sides external tooth wheel shaft (20,18) and accessory thereof (analyse and observe in the wheel hub outside);

Fig. 6, the A-A cutaway view in Fig. 5;

Fig. 7, remove the scheme drawing behind the annulus cover plate (2).

In the accompanying drawings:

Rear wheel is installed in two crotch of back vehicle frame, annulus is installed in the crotch outside, the left and right sides respectively, wherein inner gear (4) connects by bolt (6) with rocking bar (5), and external gear (3) carries out transmission by flywheel clutch (as shown in Figure 6) separately to rear wheel.

In Fig. 2:

Because this bicycle is a rocker-type bicycle, so the inner gear in the annulus (4) is the elevating arc (part has the gear teeth) or the half garden generating gear of symmetry, and the heart angle, garden of elevating arc equals the maximum pendulum angle of rocking bar (5).

Left rocker (5) is coaxial with inner gear (4) respectively, and this axle mounting is in rocking bar axle bed (10), and by bolt (15) and cooperating of axial trough being fixed in underframe (11), its method is identical with the fixing assembling of axle with the crank of existing bicycle.Rocking bar (5) is done the time spent not being subjected to external force, is positioned at the start position in axle bed the place ahead.

In order to make rocking bar (5) automatically turn back to start position from terminal point, left and right sides torsion spring (14) is installed on rocker shaft (16), the axis hole outside respectively, wherein end hook connects with underframe (11), other end hanging ring connects (as shown in Figure 4) with rocking bar (5) by bolts assemblies, also can adopt extension spring (24) to substitute torsion spring (14), the one end connects with rear crotch, and the other end is connected in rocking bar (as shown in Figure 7).

In order to control the maximum pendulum angle of rocking bar (5), vertical prevention part (1) is formed the controller of rocking bar swing on two lobes (7,8) on the left and right sides inner gear (4) and the rear crotch, and its heart angle, garden equals the maximum pendulum angle of rocking bar (5).Do not do the time spent when rocking bar is subjected to external force, under the combined action of spring and controller, rocking bar is in start position; When pedal, rocking bar and inner gear step on forward the final position to after, this spring force makes them get back to start position with the lifting of pin pendulum again.

Because rocking bar (5) is to make reciprocally swinging in top/bottom latitude, be not turnover, so the front end of saddle can select with pedal on the same vertical line of the start position of rocking bar swing.

Contaminated in order to prevent annulus, also in order to increase the intensity of inner gear (4), at the circular cover plate (2) of its outside assembling, this cover plate is swung with it.

In Fig. 3: the left and right sides hind axle bearing collar (9), rocker shaft axle bed (10) are positioned at left and right sides underframe (11), the joint (12,13) of this underframe by front and back connects (close fit or use bolt) respectively with the front and back crotch assembling of trailing wheel, install.

Left and right sides flywheel clutch on the hind axle is installed on (identical with the flywheel clutch structural principle of existing bicycle from sprocket wheel) in the external gear of the left and right sides respectively, and hind axle connects with wheel hub.When on one side rocking bar when starting point is put terminal point, the effect of meshing relation and the flywheel clutch in the external gear thereof by annulus, driving hind axle and rear wheel rotates in the same way, and there is not transmission under the effect of the flywheel clutch of the annulus of another side in its external gear, so this rocking bar is also motionless; When on one side rocking bar under the action of the spring during from the automatic return to origin of terminal point position, this flywheel clutch does not have transmission yet, therefore hind axle is produced moment of torsion.

Left and right sides flywheel clutch also can be installed on the left and right sides external tooth wheel shaft (20,18) of centering side by side, forms (as Fig. 5, shown in Figure 6) by the ratchet on each (22), spring, roller (21) with the wheel hub (17) of rear wheel.

In Fig. 5, Fig. 6:

The external tooth wheel shaft (20) on the left side carries out the centering assembling with the external tooth wheel shaft (18) on the right concavo-convex (shown in 23 among Fig. 6) by the joint in wheel hub (17), does not produce transmission and disturbs.When on one side rocking bar when starting point is put terminal point, meshing relation drive external tooth wheel shaft by annulus carries out clockwise rotation, and between the roller of compression spring effect (21) wedging ratchet (22) and the rear-wheel hub (17), affect rear wheel to rotate in the same way; When rocking bar when terminal point is put back starting point, wheel hub is not acted on by it.The purpose that adopts this assembly method is to reduce the diameter of external gear (3), increases the speed of transmitting ratio, raising bicycle.In order to prevent moving about of rear wheel, the axle between wheel hub (17) and underframe (11) is gone up assembling compressing tablet (19).

From as can be known above-mentioned: when the bicyclist is sitting on the saddle, on one side pedal when the starting point of rocking bar is stepped on the final position, the effect of meshing relation and flywheel clutch by annulus affects rear wheel to rotate in the same way; When pedal on one side began return to origin from the rocking bar terminal point, the pedal of another side was stepped on.The pedal on both sides is trampled in succession, the rocking bar on both sides reciprocally swinging in succession one on the other, drives constantly to advance.When bicycle coasting, left and right sides flywheel clutch transmission suspends, and it is motionless that rocking bar also keeps.

If the transmitting ratio of annulus is 6, the average pivot angle of rocking bar is 90 degree, and so, pedal is stepped on once, and the transmitting ratio that rear wheel is produced equals 6 ÷ 4=1.5.Bicyclist's both feet are uninterruptedly trampled pedal, if stepping on, changes 3 times (270 degree) rotates a week (360 degree) with the crank of existing bicycle time identical (pressing pedal stroke identical calculations) rocking bar, so, the speed of this rocker-type bicycle equals 2 times of existing bicycle (transmitting ratio is 2.2) speed.

Rocker-type bicycle of the present utility model has the action radius of tangible weight saving, pedal moment increasing, driving efficiency raising, bicyclist's both feet to reduce than existing bicycle, meet human cinology's (the best have an effect position) again, therefore, can grasp car easily.

Rocker-type bicycle of the present utility model, the two-wheel width between centers dwindles than existing bicycle, the front position that therefore can be designed to saddle is identical with existing bicycle with the ratio of the horizontal throw at front and back wheel center, and the total weight of bicyclist and bicycle is also basic identical with existing bicycle at the pressure of front-wheel.

Claims

1, a kind of rocker-type bicycle is made up of handlebar, wheel, vehicle frame, saddle and pedal etc., feature of the present utility model is: rear wheel is installed in two crotch of back vehicle frame, annulus is installed in the crotch outside, the left and right sides respectively, wherein inner gear (4) connects with rocking bar (5), and external gear (3) carries out transmission by flywheel clutch separately to rear wheel.

2, state bicycle according to claim 1, it is characterized in that: the inner gear in the annulus of the left and right sides (4) is the elevating arc of symmetry, and the heart angle, garden of elevating arc equals the maximum pendulum angle of rocking bar (5).

3, state bicycle according to claim 1, it is characterized in that: left rocker (5) is coaxial with inner gear (4), and is positioned at the start position in axle bed the place ahead.

4, state bicycle according to claim 1, it is characterized in that: left and right sides torsion spring (14) is installed on rocker shaft (16) respectively, the axis hole outside, and wherein end hook connects with underframe (11), and other end hanging ring connects by bolts assemblies with rocking bar (5).

5, state bicycle according to claim 1,2,3,4, it is characterized in that: vertical prevention part (1) is formed the controller of rocking bar swing on two lobes (7,8) on the left and right sides inner gear (4) and the rear crotch, and its heart angle, garden equals the maximum pendulum angle of rocking bar (5).

6, state bicycle according to claim 1, it is characterized in that: the left and right sides hind axle bearing collar (9), rocker shaft axle bed (10) are positioned at left and right sides underframe (11), and this underframe connects with the front and back crotch assembling of trailing wheel respectively by the joint (12,13) of front and back.

7, state bicycle according to claim 1, it is characterized in that: the left and right sides flywheel clutch on the hind axle is installed on respectively in the external gear of the left and right sides, and hind axle connects with wheel hub.

8,1 state bicycle as requested, it is characterized in that: left and right sides flywheel clutch also can be installed on the left and right sides external tooth wheel shaft (20,18) of centering side by side, is made up of with the wheel hub of trailing wheel the ratchet on each (22), spring, roller (21).

9, state bicycle according to claim 1, it is characterized in that: the axle between wheel hub (17) and underframe (11) is gone up assembling compressing tablet (19).