CN2858464Y

CN2858464Y - Triple folding bicycle

Info

Publication number: CN2858464Y
Application number: CN 200520140110
Authority: CN
Inventors: 刘道富
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-23
Filing date: 2005-12-23
Publication date: 2007-01-17
Anticipated expiration: 2015-12-23

Abstract

The utility model is a triple folding bicycle solving problems that divided components of a present twice folding bicycle have large volume and weight so that the bicycle is inconvenient to be carried. A beam of the triple folding bicycle can be detached into a front, a middle and a rear segment in which a seat and a middle axis are connected to the middle segment, an active gear is connected to the middle axis; A supporting rod is connected with a rear fork; A driven gear and an active sprocket wheel are linked on the supporting rod, the active gear is engaged with the driven gear which is connected with the active sprocket wheel by a transmission mechanism. The bicycle according to the utility model is capable of being detached into three components containing few elements, and has a small volume and weight so that it is convenient to be carried.

Description

Three-bend bicycle

Technical field

The utility model relates to a kind of Collapsible bicycle (comprising Electrical Bicycle), specifically, is a kind of three-bend bicycle.

Technical background

For the ease of carrying of bicycle, folding bicycle has been arranged.Existing folding bicycle generally is an eighty percent discount, its crossbeam is divided into the two parts that removably connect, behind eighty percent discount bicycle folding (separating), the leading portion of handlebar, front-wheel, front fork and crossbeam is as parts, and the back segment of trailing wheel, back vent, drive element (axis, crank throw, pedal, sprocket wheel, chain, flywheel), vehicle seat and crossbeam is as another parts.Because the part that these another parts comprise is more, so its volume is big, Heavy Weight, carries still inconvenient.

Summary of the invention

The technical matters that the utility model solves is exactly big, the Heavy Weight of piece volumes after existing eighty percent discount bicycle (comprising Electrical Bicycle) separates, and carries inconvenient problem.

Three-bend bicycle described in the utility model comprises front and rear fork, front and back wheel, crossbeam, handlebar, vehicle seat, flywheel, drive sprocket, chain, axis, crank throw, pedal; Front-wheel is connected on the front fork, and trailing wheel is connected on the back vent, and crossbeam is connected between the front and rear fork; Handlebar is connected on the front fork; The two ends of crank throw connect pedal and axis respectively; Chain is arranged on drive sprocket and the flywheel; Described crossbeam is in become to removably connect the first back three sections; Be connected with vehicle seat and axis on the stage casing, be connected with driving gear on the axis; On back vent, connect a strut bar; Be connected with ring gear and drive sprocket on the strut bar, driving gear, ring gear are meshed, and ring gear is connected with drive sprocket by a transmission device.

Bicycle of the present utility model is disassembled to be three parts, first parts comprise the leading portion of handlebar, front-wheel, front fork and crossbeam, second parts comprise the stage casing of vehicle seat, axis, crank throw, pedal, drive sprocket and crossbeam, and the 3rd parts comprise trailing wheel, back vent, strut bar, by movable sprocket, transmission device, chain, flywheel.Disassemble back second parts and can separate fully with the 3rd parts, and the part that three parts comprise is all less, volume is little, and is in light weight, carries very convenient.

As improvement, on strut bar, connect an anchor shaft, ring gear and drive sprocket are sleeved on the anchor shaft, and two opposing end faces of ring gear and drive sprocket link to each other.Like this, when driving gear drives ring gear and rotates, ring gear and drive sprocket rotate together, drive sprocket drives flywheel by chain and rotates then.This power transmission mode religion is simple, effectively expendable weight.

Improve as another kind, the side of front fork one side is pitched into tubulose, and the upright pole of handlebar passes from tubulose side fork, and upright pole can be stuck down along the tubulose side and move; The leading portion of crossbeam is connected the tubulose side and sticks.Like this, after folding, handlebar moves to bottom along tubulose side fork, further reduces size.

For arbitrary bicycle recited above, the back segment of crossbeam is connected the side of back vent one side and sticks.

For arbitrary bicycle recited above, crank throw be divided into two sections, it is hinged that two sections become.Like this, the hypomere of crank throw, rotatable 180 degree of pedal make pedal stretch to the inboard of crank throw, and the volume after further reducing to fold is so that carry.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is to be scheme drawing (bar 24 with respect to pipe 21, upright pole 17 with respect to tubulose side fork 16 all at the state of extreme lower position) after the three-bend bicycle in 1 decomposes.

Fig. 3 is the left view of the parts such as back segment 15 of back vent 2, crossbeam among Fig. 1.

Fig. 4 be manage 21 among Fig. 1, the left view (hypomere of crank throw 11, pedal rotate 180 degree back states) of parts such as crank throw 11, pedal 12, vehicle seat 7.

Fig. 5 is the left view of part such as front fork 1, handlebar 6 among Fig. 1.

Fig. 6 is the left view (enlarged drawing) of parts such as crank throw 11 among Fig. 1, pedal 12, driving gear 25.

Fig. 7 is the left view (hypomere of crank throw 11, pedal rotate 180 degree back states) (enlarged drawing) of parts such as crank throw 11 among Fig. 1, pedal 12, driving gear 25.

Fig. 8 is part enlarged drawings such as Fig. 1 driving gear 25, transmission gear 29, ring gear 28, drive sprocket 8, chain 9, axis 10.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described further.

Three-bend bicycle among the figure comprises front fork 1, back vent 2, front-wheel 3, trailing wheel 4, crossbeam 5, handlebar 6, vehicle seat 7, flywheel, driving gear 25, transmission gear 29, ring gear 28, drive sprocket 8, chain 9, axis 10, crank throw 11, pedal 12.

Front-wheel 3 is connected on the front fork 1, and trailing wheel 4 is connected on the back vent 2.Crossbeam 5 is connected between the front and rear fork, and it is made up of leading portion 13, stage casing 14, back segment 15; Leading portion 13, back segment 15 removably connect for 14 one-tenth with the stage casing respectively.The mode that removably connects belongs to prior art, no longer describes.

16 one-tenth tubuloses of side fork of one side of front fork 1, the upright pole 17 of handlebar 6 passes from tubulose side fork 16, and upright pole 17 can move up and down along tubulose side fork 16.The leading portion 13 of crossbeam is connected on the tubulose side fork 16.The back segment 15 of crossbeam is connected on the side fork 18 of back vent one side.

Be connected with on the stage casing 14 by pipe 21,22 supports of forming 23.Vehicle seat 7 links to each other with pipe 21 by the bar 24 that extend in the pipe 21, and bar 24 can move up and down along pipe 21.

Axis 10 is rotationally connected for 23 one-tenth with support, is connected with driving gear 25 on the axis.On back vent 2, connect a strut bar 26, connect an anchor shaft 27 on the strut bar 26.Ring gear 28 and drive sprocket 8 are sleeved on the anchor shaft 27, and two opposing end faces of ring gear 28 and drive sprocket 8 link to each other, and become one.Also be connected with transmission gear 29 on the strut bar 26, driving gear 25, ring gear 28 are meshed with transmission gear 29 respectively.Flywheel is arranged on the trailing wheel 4, and chain 9 is arranged on drive sprocket 8 and the flywheel.When driving gear 25 drives ring gears 28 and rotates by transmission gear 29, ring gear 28 and drive sprocket 8 rotate together, drive sprocket 8 drives flywheels by chain 9 and rotates then, flywheel drives trailing wheel again and rotates.

The two ends of crank throw 11 connect pedal 12 and axis 10 respectively.Crank throw be divided into two sections, it is hinged that two sections become.The hypomere of crank throw, rotatable 180 degree of pedal make pedal stretch to the inboard of crank throw.

This bicycle is disassembled to be three parts, first parts comprise the leading portion 13 of handlebar 6, front-wheel 3, front fork 1 and crossbeam, second parts comprise that stage casing 14, the three parts of vehicle seat 7, bar 24, support 23, axis 10, crank throw 11, pedal 12, driving gear 25 and crossbeam comprise trailing wheel 4, back vent 2, strut bar 26, transmission gear 29, ring gear 28, drive sprocket 28, chain 9, flywheel.Disassemble back second parts and can separate fully with the 3rd parts, and the part that three parts comprise is all less, volume is little, and is in light weight, carries very convenient.

The utility model also can be used for Electrical Bicycle.At this moment, parts such as electrical motor can be connected the back segment of crossbeam, with back-wheel drive; Relevant control path adopts socket connection, conveniently to take apart.Certainly, also parts such as electrical motor can be connected the leading portion of crossbeam, with f-w-d.

Claims

1. three-bend bicycle comprises front and rear fork, front and back wheel, crossbeam, handlebar, vehicle seat, flywheel, drive sprocket, chain, axis, crank throw, pedal; Front-wheel is connected on the front fork, and trailing wheel is connected on the back vent, and crossbeam is connected between the front and rear fork; Handlebar is connected on the front fork; The two ends of crank throw connect pedal and axis respectively; Chain is arranged on drive sprocket and the flywheel; It is characterized in that: described crossbeam is in become to removably connect the first back three sections; Be connected with vehicle seat and axis on the stage casing, be connected with driving gear on the axis; On back vent, connect a strut bar, be connected with ring gear and drive sprocket on the strut bar; Driving gear, ring gear are meshed, and ring gear is connected with drive sprocket by a transmission device.

2. three-bend bicycle according to claim 1 is characterized in that: connect an anchor shaft on the strut bar, ring gear and drive sprocket are sleeved on the anchor shaft, and two opposing end faces of ring gear and drive sprocket link to each other.

3. three-bend bicycle according to claim 1 is characterized in that: the side of front fork one side is pitched into tubulose, and the upright pole of handlebar passes from tubulose side fork, and upright pole can be stuck down along the tubulose side and move; The leading portion of crossbeam is connected the tubulose side and sticks.

4. three-bend bicycle according to claim 1 is characterized in that: the back segment of crossbeam is connected the side of back vent one side and sticks.

5. three-bend bicycle according to claim 1 is characterized in that: crank throw be divided into two sections, it is hinged that two sections become.