CN2533047Y

CN2533047Y - Improved folding bicycle

Info

Publication number: CN2533047Y
Application number: CN 02219926
Authority: CN
Inventors: 李梅祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-10
Filing date: 2002-04-10
Publication date: 2003-01-29
Anticipated expiration: 2012-04-10

Abstract

The utility model relates to an improved folding bicycle, which aims to provide a folding bicycle with functions of quick folding and unfolding, safe and reliable riding. The technique points are that the upper beam (4) of the frame is connected with a nozzle stub, the front nozzle stub is connected with a front fork (16) and a front column (15) respectively, the rear nozzle stub is connected with the seat and a hind post (7) respectively; a sleeve pipe is arranged in the connection of the nozzle stub and the two ends of the upper beam (4), the sleeve pipe is connected in the two ends of the upper beam through a pin roll (3) and a pin roll (5); the lower end of the front column (15) is connected with an front end of the under beam (12) through a pin roll (14), the rear end and the middle part of the under beam are connected with the lower end of the back vent (9) and the lower end of the hind post (7) through the pin roll (11) and the pin roll (13) respectively, the upper end of the back vent (9) is connected with the rear end of the upper beam (4) through the pin roll (5). The folding and the unfolding of the utility model are convenient, quick and flexible, and the riding is safe and reliable. Because of the small folding volume, the utility model is favorable for transporting and carrying.

Description

Improved Folding Bicycle

Technical field: the utility model relates to a kind of improved Folding Bicycle.

Background technology: though Folding Bicycle in the market is various in style, but because the mode of Bolt Connection is all adopted in the connection between its each associated components of vehicle frame that folds or launch, so it all needs to go seriatim elasticity bolt when folding or expansion, use cumbersome, waste time and energy, and the attachment bolt that launches between each associated components of vehicle frame of back also is difficult for tightening, and it is also not too safe to ride.

Summary of the invention: technical problem to be solved in the utility model is: provide a kind of improved, folding and expanding is convenient and swift, riding safety failure-free Folding Bicycle.Its technical scheme is: a kind of improved Folding Bicycle, comprise front fork, handlebar, wheel, sprocket wheel and the vehicle frame that constitutes by upper and lower beam, forward and backward post and back vent, it is characterized in that: the upper beam two ends of described vehicle frame connect firmly short tube, its front end short tube connects firmly with front fork and front pillar respectively, its rear end short tube connects firmly with vehicle seat and rear pillar respectively, be respectively equipped with axle sleeve in the connection place at short tube and upper beam two ends, respectively it be connected in the front and back ends of upper beam by bearing pin; The lower end of front pillar is connected by bearing pin with the front end of underbeam, and the rear end of underbeam and middle part are connected by bearing pin with the lower end of back vent and rear pillar respectively, and the upper end of back vent is connected by bearing pin with the rear end of upper beam.Its technique effect is: owing to all adopt the bearing pin activity to connect in the connection place of each associated components of vehicle frame, Gu it is very convenient, flexible, time saving and energy saving when not only folding or expansion, and when riding because the connection place that the pressure on the vehicle seat can make each associated components because of stressed press more tight more, so it is more safe and reliable promptly can not get loose, ride.Simultaneously, during folding the shipment, volume is less, is convenient to shipment and carries.

The drawing explanation:

Fig. 1 connects scheme drawing for the utility model structure;

Fig. 2 is the utility model folded state scheme drawing;

Fig. 3 connects scheme drawing and short tube A to view for putting the beams in place with its two ends short tube;

Fig. 4 is that back vent connects scheme drawing with the self-locking device structure.

Fig. 5 is that front fork shock absorption device structure connects scheme drawing.

Embodiment:

Structure when Fig. 1, Fig. 2 are the folding and deployed condition of the collapsible small-wheel bicycle of the utility model connects scheme drawing.Upper beam 4 two ends of vehicle frame are welded with the short tube (see figure 3) respectively, and the short tube of its front end is fixedly connected with the upper end of front fork 16 and front pillar 15 respectively, and the short tube of its rear end is fixedly connected with the upper end of vehicle seat and rear pillar 7 respectively.Be respectively equipped with axle sleeve in the connection place of short tube and upper beam rear and front end, axle sleeve is connected in it in rear and front end of upper beam by bearing pin 3 and 5 respectively.The lower end of front pillar 15 is connected by bearing pin 14 with the front end of underbeam 12, and the rear end of underbeam and middle part are connected with the lower end of back vent 9 and the lower end of rear pillar 7 by bearing

11 and 13 respectively, and the upper end of back vent and the rear end of upper beam and interior axle sleeve thereof are connected by bearing pin 5 jointly.Back vent 9 is upper and lower two sections 9-1,9-2, is connected by self-locking device 8 therebetween.Self-locking device 8 is made up of rectangle adapter plate 8-1 and bearing pin 8-2 and spring 8-3.Two broadsides of rectangle adapter plate and an adjacent long limit respectively inwards crimp form two positioning groove 8-4, the inside of adapter plate is through the crimp end of two broadsides, cover connection compression spring 8-3 on the bearing pin by bearing pin.The upper end of back vent hypomere 9-2 is welded on the lower end of crimp, and the lower end of epimere 9-1 is sleeved on the bearing pin 8-2 between crimp and the spring 8-3.When bicycle need fold, grasp back vent epimere 9-1 and pull back, positioning groove 8-4 is promptly withdrawed from the bottom of this section, and bending makes back vent be rugosity; When needs launch to use, only need an one hand mention handlebar 1, after again the bottom of epimere 9-1 promptly enter positioning groove 8-4, whole back vent 9 is stretched.

The lower end of clothing support 6 is connected in the bearing pin 8-2 end of self-locking device 8 both sides, and its front end is connected by bearing pin 5 jointly with back vent 9 upper ends.

Be connected and fixed with quick tight locking button 17 between handlebar 1 and the front fork 16.Unclamp quick tight locking button 17, can regulate the height of handlebar 1 quickly and easily.

The fork body of front fork 16 both sides is provided with damping spring 16-1 (see figure 5), can reduce that front-wheel jolts and the vibration that causes.

Claims

1, a kind of improved Folding Bicycle, comprise front fork, handlebar, wheel, sprocket wheel and the vehicle frame that constitutes by upper and lower beam, forward and backward post and back vent, it is characterized in that: the upper beam of described vehicle frame (4) two ends connect firmly short tube, its front end short tube connects firmly with front fork (16) and front pillar respectively, and its rear end short tube connects firmly with vehicle seat and rear pillar (7) respectively; Be respectively equipped with axle sleeve in the connection place at short tube and upper beam (4) two ends, respectively it be connected in the two ends of upper beam by bearing pin (3,5); The lower end of front pillar (15) is connected by the front end of bearing pin (14) with underbeam (12), the rear end of underbeam and middle part are connected with the lower end of back vent (9) and the lower end of rear pillar (7) by bearing pin (11) and (13) respectively, and the upper end of back vent is connected by bearing pin (5) with the rear end of upper beam (4).

2, as weighing 1 described a kind of bicycle, it is characterized in that: described back vent (9) is upper and lower two sections (9-1,9-2), is connected by self-locking device (8) therebetween.

3, as weighing 2 described a kind of bicycles, it is characterized in that: described self-locking device (8) is made up of rectangle adapter plate, bearing pin and spring, two broadsides of rectangle adapter plate (8-1) and an adjacent long limit are distinguished inwards, and crimp forms two positioning grooves (8-4), the face face of adapter plate is applied in the crimp end of two broadsides by bearing pin (8-2), cover connection spring (8-3) on the bearing pin.

4, as weighing 1 described a kind of bicycle, it is characterized in that: be connected and fixed by quick tight locking button (17) between described front fork (16) and the handlebar (1).

5, as weighing 1 described a kind of bicycle, it is characterized in that: the fork body of described front fork (16) is provided with spring (16-1).