CN2411958Y - Mini telescopic folding bicycle - Google Patents

Abstract

The utility model relates to a cross bicycle frame with three sections of telescopic and folding square tube. Via the expansion and contraction of the three sections of square tube, the bicycle length and the bicycle height can be adjusted. The telescopic and folding rotating handle-bar adjusts the angle, height, and distance of the handle-bar. the front wheel and the back wheel use plastic small wheels with diameters 20 cm or 30 cm. a fly wheel is provided with a small accessory wheel, and the speed bicycle is normal without adding a large chain wheel. The weight of the bicycle is 7 kilograms, and the length, width, and height of the volume are respectively 18 cm, 40 cm, and 40 cm. the bicycle length and the vehicle height can be adjusted by different grades. The utility model is suitable to the riding of children, adults, and students. The folded bicycle can be placed below desks and chairs for saving an exercise area for schools.

Description

Miniature telescopic folding bicycle

The utility model relates to a kind of miniature telescopic folding bicycle.

During the last ten years, all constantly releasing various later-model folding bicycles both at home and abroad.Have on the structure doubling, three folding, casing, multi-functional or the like.As: ZL84200536, ZL86202886, ZL91204552.4, ZL95208154.7 and nearest Shanghai phoenix bicycle company, permanent bicycle company, PANASONIC bicycle company have all released trendy folding bicycle to market.(seeing attached data) makes a general survey of folded bicycle progress during the last ten years, having than quantum jump aspect foldable structure, the weight.Use titanium steel, only 6.5 kilograms of weight as Panasonic.But aspect volume after folding, do not break through all the time.As permanent folding volume be 35 * 60 * 70 (centimetre), Panasonic 33 * 58 * 63 (centimetre).Why be difficult to break through folding volume, because (1) volume is too small, launch the back vehicle commander with method for folding, overall height out of reach adult rides the requirement of seat.(2) must use Φ 30cm wheel less than above-mentioned two folding volume.Learn by calculating, reach the conventional speed of a motor vehicle, must be increased to the Φ 33.4cm also bigger to sprocket diameter than wheel itself in order to make the speed of a motor vehicle.

The purpose of this utility model will provide a kind of folding volume less exactly, and weight is lighter, folding convenient and can reach the flexible folding of bicycle that adds of conventional speeds again.This telescopic folding car body is long-pending to be 18 * 40 * 40 (centimetre), weight is 7kg.

The purpose of this utility model is to realize like this.

At first select for use the lightweight rectangular tube to make the flexible cross structure vehicle frame of the nestable pipe of three joints, regulate the height of vehicle commander and saddle with the nestable pipe of three joints.Front and back wheel is selected the plastic wheel of Φ 20cm and Φ 30cm respectively for use.Not only reduce the volume of car but also reduced the weight of car simultaneously.For raising speed, need not add hinge wheel and set up one the 10 little accessory whorl of tooth on flywheel next door and get final product.Because of the conventional minimum flywheel in market has only 16 teeth, therefore can raising speed be: 10 teeth/16 teeth=62.5%.This is just near the conventional speed of a motor vehicle.Handlebar adopts the structure of stretching, folding vertical pivot and rotating handles, and monoenergetic is not by the rotation transformation different angles to make handlebar, and the while is played the height and the distance of regulating between handlebar and the saddle again.The people who makes it to be more suitable for all ages and classes level takes.In order to reduce fold thicknesses, two pedals adopt the structure of 180 ° of upsets, make car compactlyer folding, and thickness is no more than 18cm.

The utility model is at the conventional confguration of breaking bicycle aspect vehicle frame, handlebar, flywheel, the pedal, and flexible and folding combining makes car folding forr a short time, and weight is lighter, amplifies and to dwindle ratio bigger.Vehicle commander and saddle raise and reach 110cm, and handlebar raises and reaches 126cm, because the high and long three-joint pipe that adopts is flexible and the handlebar angle is folding, can set multistage overall height vehicle commander according to different heights, and this just overcomes the shortcoming that pure folded bicycle can not classification be regulated the overall height vehicle commander.So this car can be suitable for children simultaneously and the adult rides seat.Be fit to travel on official business and portable going upstairs, be more suitable for students in middle and primary schools and use.They can be put into folded bicycle under corridor or the tables and chairs separately.A sheet of vacant lot that is used to stop can be economized out by school like this.Popularize in an all-round way, significant.

The embodiment of this utility model is described below in conjunction with accompanying drawing.

Fig. 1 is the External view of car load.Fig. 2 is for shrinking folded exterior figure.Fig. 3 is handlebar, is connected cutaway view with front-wheel car fork.Fig. 4 is the additional little accessory whorl cutaway view of flywheel.Fig. 5 is the foldable structure figure of pedal.

Among Fig. 1,1 is cross frame, and vertical tube is two group of three joint square tube.Every group three joint square tube is by mutual nestable the forming of large, medium and small pipe.The lower end of the big square tube of two joints is connected with the axletree of trailing wheel 2, and twists the jail with screw.The little square tube of two joints upper end is connected with saddle 3 and twists the jail with screw.The height of saddle location, by the card 4 of two band springs being located at bassoon and middle pipe upper end respectively be located in manage and the draw-in groove of the dark 0.5cm of tubule bottom is located.Perpendicular square tube is used the light-duty alloy pipe of 0.8mm thickness.The big pipe range 25cm of vertical tube, middle pipe range 36cm, the long 38cm of tubule.External diameter is respectively: bassoon 3cm * 2cm, and middle pipe 2.7cm * 1.7cm *, tubule 2.4cm * 1.4cm.The transverse tube of cross frame is that the nestable mutually square tube of one group of three joint is formed.Horizontal bassoon is clipped in the middle of the perpendicular bassoon, vertically at an angle of 90, and welds with next door two perpendicular bassoons, uses bore 2cm * 1cm tubule to form triangle again and adds strong pulling force.The long bore square tube identical with middle pipe of middle pipe front end one section 6cm of vertical welding, the axle stationary pipes of the lower end of square tube and sprocket wheel 5 welds, and uses the bail 6 that is located at bassoon front end band spring to fix the position of sprocket wheel.The stationary pipes 9 of the front end of tubule and front-wheel car fork 7 welds, and manages on the front end during the fixedly bail 8 of tubule is located at.Thick 1mm is used in the bassoon of transverse tube, and middle pipe tubule uses the square alloy pipe of 0.8mm.Big external diameter of pipe is 4cm * 3cm, and length is 25cm, and middle external diameter of pipe is 3.7cm * 2.7cm, and length 35cm, little external diameter of pipe are 3.4cm * 2.4cm, and length is 38cm.Front-wheel car fork 7 is connected identical with the connection of car fork stationary pipes 9 with tradition with ball.The round vertical pivot 11 of front-wheel car fork 7 and handlebar 10 be connected with traditional be connected inequality.The round vertical tube of car fork 7 is formed two joint telescopic tubes with the round vertical pivot of handlebar 10 11, and handlebar can also classification be regulated the height of handlebar 10 except the direction of regulating wheel, makes handlebar circle vertical pivot 11 and car pitch 7 to locate by being located at band spring bail 12 that car sticks.Handlebar circle vertical pivot 11 is provided with corresponding differing heights hole clipping equally.13 is handlebar square-folded axle, and square folding shaft lower end is connected with the upper end of handlebar circle vertical pivot 11.Connection structure is seen Fig. 3.Fig. 3 is that handlebar is connected cutaway view with the car fork.Semi-circle gear 14 of handlebar circle vertical pivot 11 upper ends welding, the lower end of handlebar square-folded axle 13 is fixing with half garden gear 14 with rivet 15, and the cutting ferrule 16 that is provided with a band spring and semi-circle gear 14 cards are firm fixes folding angle.Regulate required angle according to rider's arm length.Handlebar 10 is divided into two isometric halves, and the long 25cm of every half makes with the circular compo pipe of Φ 2cm.Handlebar square-folded axle 13 upper end the right and lefts respectively are welded with the angle sleeve pipe 17 of regular hexagon empty in, angle cover pipe range 6cm, Φ 2cm, top 1cm is interior empty regular hexagon, bottom 5cm is circular internal diameter, and an end of every of the handlebar of two halves is welded with a vertical angle loop bar 18 about being divided into.The long 7cm of loop bar, loop bar top 1cm is a hexagon, matches with empty hexagon in the angle sleeve pipe 17.The bottom is a round bar, and is with one section spring and captive nut.The angle loop bar is in the angle sleeve pipe, because the pressure of spring, the angle loop bar tightly is enclosed within on the angle sleeve pipe.As long as the angle loop bar is upwards drawn high and 17 disengagings of angle sleeve pipe, is got final product translation-angle.Two half handlebars are merely able to ° come translation-angle at separately semicircle Rotate 180.So just can make handlebar be combined into in-line, splayed, herringbone and two forms such as parallel shape.Because every half handlebar length is 25cm, so every half handlebar can be the circumference angle of radius at 25cm.The front and back gap of handlebar angle reaches 50cm.The people that such angle handlebar does not singly adapt to different brachiums takes, and likes rat-fuck psychology but also be fit to the young people.Fig. 4 is flywheel and additional little accessory whorl side sectional view.19 is accessory whorl among the figure.External diameter is 4.5cm, is set at 10 teeth, and internal diameter is 2cm.20 is clutch disk, and clutch disk welds with additional accessory whorl on one side, and another side is fixed with screw and flywheel teeth, and clutch disk internal diameter Φ 5.5cm is advisable only to pack into flywheel.21 is conventional 16 tooth flywheels.22 is fix screw.Fig. 5 is pedal foldable structure figure.5 is 44 toothed chain wheels among the figure, and diameter is 18cm.23 fixedly pedal arm, long 7cm for half.24 pedal arm for activity, long 16cm, and top is U-shaped, is clipped in the middle fixedly pedaling arm, pedals arm with activity and is connected fixedly pedaling arm by pedaling arm nail 25.26 is fixedly to pedal arm and the movable square positioning sleeve of pedaling arm, the long 5cm of cutting ferrule, and the activity of being located at is pedaled on the arm.The cutting ferrule bore is just in time pedaled arm and is entangled firm fixedly pedaling arm and activity.Establish the spring 27 of one section 3cm in the cutting ferrule and make fixedly Screw 28 of spring upper end and cutting ferrule.When cutting ferrule is pressed down, cutting ferrule is broken away from fixedly pedal arm, it is folding just can to pedal 180 ° of arm upsets to activity.The structure of both sides pedal is identical.

The utility model need fold when dwindling, and (seeing accompanying drawing 2) draws the card 4 of loose vertical tube earlier, makes saddle lean on the gravity automatic lowering to shrink.Handlebar Rotate 180 °, car fork and front-wheel are inwardly received then, overlapping in order to front-wheel and trailing wheel.Again two pieces of bails 8 of transverse tube and 16 are unclamped sprocket wheel, front-wheel, handlebar are shunk.Draw back bail 12, handlebar is descended, folding more at last square folding shaft and handlebar get final product.

Claims (4)

1, miniature telescopic folding bicycle is made up of vehicle frame (1), wheel (2), saddle (3), sprocket wheel (5), front-wheel car fork (7), handlebar (10), flywheel (21), pedal (24) etc., it is characterized in that: vehicle frame is cross structure, cross vertical tube is made up of two group of three large, medium and small nestable square tube mutually of joint, transverse tube is made up of one group of three large, medium and small nestable square tube mutually of joint, and handlebar (10) is made up of flexible, folding and rotational structure.

2, miniature telescopic folding bicycle according to claim 1 is characterized in that: the vertical pivot of handlebar (10) is by handlebar circle vertical pivot (11), and handlebar square-folded axle (13) constitutes; The round vertical tube of handlebar circle vertical pivot (11) and front-wheel car fork (7) is formed two joint telescopic sleeve structures, and handlebar square-folded axle (13) is by semi-circle gear (14), and rivet (15) is with spring cutting ferrule (16) and handlebar circle vertical pivot to form foldable structure; Two half handlebars are by hexagon angle sleeve pipe, and angle loop bar (18) connects to form rotation angle handlebar.

3, miniature telescopic folding bicycle according to claim 1 is characterized in that: at the other additional little accessory whorl (19) of conventional flywheel, additional little accessory whorl (19) is connected and fixed by the flywheel teeth of clutch disk (20) with conventional flywheel (21).

4, miniature telescopic folding bicycle according to claim 1, it is characterized in that: pedal is divided into that half is fixedly pedaled arm (23) and arm (24) is pedaled in activity, pedal arm and fix fixedly pedaling arm and activity by positioning sleeve (26), depress cutting ferrule (26), activity pedal arm can overturn 180 ° folding.

Images