CN2294209Y

CN2294209Y - Bicycle for mountain city

Info

Publication number: CN2294209Y
Application number: CN 97201918
Authority: CN
Inventors: 李凤咏
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-21
Filing date: 1997-03-21
Publication date: 1998-10-14
Anticipated expiration: 2007-03-21

Abstract

The utility model relates to a bicycle for a mountain city. A drive shaft of a front wheel is provided with a drive axle of which drive case is provided with a fly wheel; a ball bearing is arranged between the drive shaft and a vehicle frame, and between the drive shaft and the drive case respectively. The rear part of the vehicle frame is provided with a barycenter modified gear and a locking mechanism. A rolling sleeve of the barycenter modified gear is sheathed on a support column. The left end of a lock shaft of the locking mechanism is provided with a locking head, and the shaft is sleeved with a spring to tightly press the locking head and a slide sleeve is tightly locked at some position of the support column. A pin shaft compression spring is pulled to make the locking head loosened, and the slide sleeve can slide up and down on the support column. The structure can change the centroid position of the rider on the slope. The utility model has the advantages of labor saving and safety.

Description

The mountain city bicycle

The utility model relates to a kind of mountain city bicycle, belongs to the technical field of bicycle.

At present, bicycle both domestic and external all by chain, sprocket wheel by back-wheel drive, the bicycle form is a lot, but principle and indistinction.These bicycles travel very light on smooth road, but when travelling on the road surface on upper and lower slope, and just very inconvenience is not that the effort of riding slowly is exactly to fall easily to fall.Be convenient to reinforcing when going up a slope, improve the stability that it travels, just must make forward lean in order to make, raise, even buttocks leaves vehicle seat, the cyclist is felt exhausted can't bear, make health sinking rear portion during descending again,, also easily make health feel uncomfortable to keep its stability.

The purpose of this utility model is that a kind of mountain city bicycle will be provided.It can overcome above-mentioned shortcoming, utilize the center of gravity modified gear that cyclist's center of gravity is changed with the gradient, center of gravity can lean forward and raise during upward slope, make again during descending and move after the center of gravity and descend, at this moment between hand and the handlebar, between pin and the stretcher relative position also and no change, not only comfortable but also stable when therefore riding.

The purpose of this utility model is achieved in that the mountain city bicycle is made up of front-wheel, trailing wheel, vehicle frame, front fork, stretcher etc., on the axle drive shaft of front-wheel, front driving axle is housed, there is center of gravity displacement sliding sleeve at the rear portion of vehicle frame, lock with lockout mechanism, suit one drives shell on the axle drive shaft of front driving axle, flywheel is contained on the axle drive shaft, and ball bearing of main shaft is housed on the axle drive shaft, and the left and right sides bearing brackett of axle drive shaft all connects to ground.In the sliding sleeve of center of gravity modified gear support column is housed, the steering unit end is fixed a bearing pin with pin.Be with spring on the bearing pin, bearing pin and locking head are to be threaded, and the locking tooth of locking head left end is entrenched in the teeth groove of support column.Overcoat left end and sliding sleeve are welded as a whole, and on overcoat right part end face, a projection is extended on end cap right-hand member top to the right to end cap, is connected with steering unit with pin with bolt.One rear driving axle is installed, drive system before and after forming with front driving axle on the vehicle frame of bicycle.According to the gradient size of track, regulate the sliding sleeve of center of gravity modified gear, can slide up and down and lock.When the cyclist is ridden, keep body balance on sloping road.

Fig. 1, mountain city bicycle Fig. 2, mountain city bicycle birds-eye view Fig. 3, mountain city tricycle Fig. 4, mountain city tricycle birds-eye view Fig. 5, front and back drive C that mountain city bicycle Fig. 6, front and back drive mountain city bicycle birds-eye view Fig. 7, center of gravity modified gear constructional drawing Fig. 8, Fig. 7 to the A of view Fig. 9, Fig. 7 center of gravity modified gear constructional drawing to diagrammatic sketch Figure 10, front driving axle

Be described in detail below in conjunction with the structure of accompanying drawing the mountain city bicycle:

On the axle of bicycle front-wheel drive axle (1) is housed by Fig. 1,2, there is center of gravity modified gear (2) at the rear portion of vehicle frame, with lockout mechanism (3) locking.

On the axle by the front-wheel of Fig. 3,4 three-wheel vehicles front driving axle (1) is arranged equally, center of gravity displacement sliding sleeve (2) also is equipped with at the vehicle frame rear portion, also uses lockout mechanism (3) locking, and trailing wheel is the two-wheel supporting.

Identical by Fig. 5,6 its structures with Fig. 1, a rear drive system (4) just is housed in the appropriate position of trailing wheel front and vehicle frame.

By Fig. 7,8, one support column (12) is housed in the sliding sleeve of 9 center of gravity modified gears (11), steering unit (14) is terminal to connect a bearing pin (18) with pin (17), be with spring (15) on the bearing pin (18), bearing pin (18) front end has outside thread, match with the tapped bore of locking head (16), overcoat (20) left end and sliding sleeve (11) are welded as a whole, end cap (19) is screwed on overcoat (20) right part end face, the part of locking head (16) and bearing pin (18) and spring (15) all are contained in the inner chamber of overcoat (20) and end cap (19), have only the right part of bearing pin (18) to stretch out end cap (19) outside, be connected with steering unit (14) by pin (17), end cap (19) upper right quarter extends a projection to the right and is connected with steering unit (14) by set pin (21), sliding sleeve (11) bottom contacts with fixed block (22), fixed block (22) has tapped bore (23) and is used to connect rear trunnion, and locking head (16) left end has locking tooth (24) to be entrenched in the serrate slot of support column (12).

Go up one of suit by the axle drive shaft (31) of Figure 10 front driving axle (1) and drive a shell (32) and a flywheel (33), ball bearing of main shaft (35) is housed on the axle drive shaft (31), the bearing seat (36) of ball bearing of main shaft (35) is connected with vehicle frame (34).

When travelling on flat road, support column (12) is positioned at sliding sleeve (11) center (seeing Fig. 1,3,5), by catch gear (3) locking (Fig. 8).Pulling steering unit (14) is stirred bearing pin (18) by pin (17) during upward slope, and bearing pin (18) pulling latch segment (16) makes it lock the teeth groove that tooth (24) leaves support column (12), and the position that goes out of lock.Sliding sleeve (11) moves up behind some positions, steering unit (14) is decontroled control lever shaft (18), bearing pin (18) loosens clamp holder (16), under spring (15) effect, locking head (16) is pressed to support column (12), the locking tooth (24) of latch segment (16) is embedded in the teeth groove of support column (12), lockout mechanism (3) locking, bicycle is the upward slope statusline and sails.When descending, action was opposite when it handled with upward slope.

When on flat road, travelling or going up a slope, stretcher drives axle drive shaft (31) and flywheel (33), and flywheel (33) drives again and drives shell (32), drives shell (32) and makes front-wheel to overtake by width of cloth bar, when descending or stretcher stopped to drive, front-wheel slided forward by flywheel (33).

Compared with prior art, bicycle for mountain city has following advantages:

1, adopted the center of gravity modified gear, comfortable, the safety of cyclist when travel in sloping road.

2, adopt f-w-d, its acceleration capability is poor slightly, but has reduced wearing and tearing and loss in efficiency between chain and sprocket wheel, and is laborsaving when going up a slope by bike.Run at high speed as need and can install a planet transmission device additional.

3, between axle drive shaft and the driving shell, ball bearing of main shaft is housed all between axle drive shaft and the vehicle frame, thereby drives light and flexible, dependable performance.

4, cost is low.

5, three-wheel type, track rear is little, has good crossing ability and good stable, and suitable the elderly rides instead of walk, stop convenient and safety.

6, the driving bicycle in front and back especially is fit to the long-term travel that two people cooperate.

Claims

1, a kind of mountain city bicycle, form by front-wheel, trailing wheel, vehicle frame, front fork, stretcher, it is characterized in that on the axle of front-wheel, front driving axle (1) being housed, center of gravity modified gear (2) is equipped with at the rear portion of vehicle frame, with lockout mechanism (3) locking, the axle drive shaft (31) of front driving axle (1) is gone up suit one and is driven shell (32), and flywheel (33) is contained on the axle drive shaft, between axle drive shaft and the driving shell, drive between shell and the vehicle frame ball bearing of main shaft (35) all is housed.

2, bicycle according to claim 1, the sliding sleeve (11) that it is characterized in that the center of gravity modified gear can slide up and down on support column (12), steering unit (14) is terminal to connect a bearing pin (18) with pin (17), be with spring (15) on the bearing pin (18), bearing pin (18) is connected with screw thread with locking head (16), the locking tooth (24) of locking head left end is entrenched in the serrate slot of support column (12), overcoat (20) left end and sliding sleeve (11) are welded as a whole, end cap (19) uses bolt on overcoat (20) right side, a projection is extended on end cap (19) right-hand member top to the right, and is connected with steering unit (21) with set pin (21).

3, bicycle according to claim 1 is characterized in that the rear drive system (4) of installing on the vehicle frame of bicycle.

4, bicycle according to claim 1 is characterized in that bicycle rear can be equipped with two-wheel, is assembled into three-wheel vehicle.