CN201280186Y

CN201280186Y - Foldable bicycle

Info

Publication number: CN201280186Y
Application number: CNU2008201358555U
Authority: CN
Inventors: 王瑞江
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-09
Filing date: 2008-10-09
Publication date: 2009-07-29
Anticipated expiration: 2018-10-09

Abstract

The utility model discloses a folding bicycle which comprises a frame, a front wheel, a back wheel, a saddle, a drive system, a braking system, a handle, a front breeches pipe, a rear breeches pipe and a seat tube. The frame further comprises a sloping beam and a supporting rod; upper and lower lugs are fixedly arranged on one side of the front breeches pipe; a lug is fixedly arranged at the upper part of the seat tube, and the bottom end thereof is articulated on the rear breeches pipe; a folding rod is articulated at one end of the rear breeches pipe, and the other end of the folding rod is articulated on the upper lug; the back wheel is mounted at the bottom end of the rear breeches pipe; the drive system is mounted at the lower part of the rear breeches pipe; one end of the sloping beam is articulated on the lower lug; a folding rod is articulated at the other end of the sloping beam, and the other end of the folding rod is articulated on the lug; a bottom lug is respectively and fixedly arranged on the bottom surfaces of the rear breeches pipe and the sloping beam; and two ends of the supporting rod are respectively articulated on the bottom lug. The folding bicycle has the advantages that the folding operation is simple, the whole structure is compact after the folding bicycle is folded, and the front and the back wheels are arranged on one straight line, thereby facilitating execution.

Description

Folding bicycle

Technical field

The utility model relates to a kind of bicycle, particularly a kind of folding bicycle.

Background technology

Existing folding bicycle, mostly being hinge-type connects, adopt folding bicycle inconvenient operation when folding of this connection mode, and two wheels are piled up together after folding, thickness is bigger, can only play and reduce to take volume, the effect of conveniently laying, but its two wheels under folded state pile up together, can only carry when carrying, remove, can't utilize original wheel to carry out, carry still very inconvenient.

The utility model content

The purpose of this utility model is to provide a kind of folding operation simple for the deficiency that solves above-mentioned technology, folding back compact overall structure, and front and back wheel in a straight line folding bicycle still.

Technical scheme provided by the utility model is: a kind of folding bicycle, comprise vehicle frame, front-wheel, trailing wheel, saddle, drive system, brake system, handlebar, front fork tube, back breeches pipe, the seat pipe, vehicle frame also comprises cant beam and strut bar, one side of front fork tube is installed with, following lug, seat pipe top is installed with lug, the bottom is hinged on the back breeches pipe, one end of back breeches pipe is hinged with folding rod, the other end of folding rod is hinged on the upper lug, trailing wheel is installed in the back breeches pipe bottom, drive system is installed in the back breeches pipe bottom, one end of cant beam is hinged on down on the lug, and the other end of cant beam is hinged with folding rod, and the other end of folding rod is hinged on the lug, bottom surface at back breeches pipe and cant beam is installed with end lug respectively, and the two ends of strut bar are hinged on the end lug respectively.

Further, drive system is the two-stage speed change system, comprise preceding fluted disc, rear tooth disk, coaxial freewheels, described back breeches pipe is provided with preceding fluted disc, trailing wheel is provided with rear tooth disk, the bottom of fluted disc is provided with coaxial freewheels before described, and coaxial freewheels is provided with two fluted discs of size and is connected with preceding fluted disc with rear tooth disk respectively.

Further, back breeches pipe and cant beam are arranged in a crossed manner.

The resulting folding bicycle of the utility model, the vehicle frame of folding bicycle can be drawn in, and the front and rear part of folding bicycle also can be drawn close mutually, to reach the purpose of final this folding bicycle of gathering, be provided with coaxial freewheels in the back breeches pipe bottom on the other hand, coaxial freewheels is provided with two fluted discs of size and is connected with preceding fluted disc with rear tooth disk respectively, by this two-stage variable speed drive system, has increased the revolution ratio of preceding fluted disc and rear tooth disk.The two ends of strut bar respectively be fixedly arranged on cant beam and be fixedly arranged on back breeches pipe on the lug hinge be connected, make folding bicycle open back vehicle frame stability and strengthen.Folding bicycle is littler in the rounding state lower volume like this, and the user also can obtain better user's experience.In addition, distribute before and after the two-wheeled of the folding back of the utility model folding bicycle, under folding state, still can carry out, be convenient for carrying and little space in mobile.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the constitution diagram after the utility model folds;

Fluted discs before 1 front-wheel, 2 front fork tubes, 3 collapsible handles, 4 vehicle frames, 5 folding rods, 6 lugs, 7 saddles, 8 pipes, 9 rear tooth disks, 10 trailing wheels, 11 flywheels, 12 back breeches pipes, 13,14 strut bars, 15 cant beams, 16 boss, 17 latching devices, 18 grooves, 19 chains, 20 drive systems, 21 brake system, 61 upper lug, 62 times lugs, 63 end lugs, 22 handles.

The specific embodiment

In conjunction with the accompanying drawings patent of the present invention is further described below by embodiment.

As shown in Figure 1, folding bicycle of the present utility model comprises vehicle frame 4, front-wheel 1, trailing wheel 10, saddle, drive system, brake system, handlebar 3, front fork tube 2, back breeches pipe 12, seat pipe 8, cant beam 15 and strut bar 14; Side at front fork tube 2 is installed with upper lug 61, following lug 62, seat pipe 8 tops are installed with lug 6, the bottom is hinged on the back breeches pipe 12, one end of back breeches pipe 12 is hinged with folding rod 5, the other end of folding rod 5 is hinged on the upper lug 61, one end of cant beam 15 is hinged on down on the lug 62, the other end of cant beam 15 is hinged with folding rod 5, the other end of folding rod 5 is hinged on the lug 6, bottom surface at back breeches pipe 12 and cant beam 15 is installed with end lug 63 respectively, the two ends of strut bar 14 are hinged on respectively on the end lug 63, open back support rod 14 at bicycle like this and can play certain supporting role, help the resistance to overturning of car body.

Back breeches pipe 12 is arranged in a crossed manner with cant beam 15, the upper end of cant beam 15 has a groove 18, back breeches pipe 12 pass this groove 18 and folding rod 5 hinged, and this cross connecting structure is provided with latching device 17, in order to stablize the vehicle frame 4 under bicycle folding and the open mode, the back breeches pipe upper end is provided with boss 16, and the upper surface that bicycle is opened rear boss 16 is against on the groove 18, and bicycle is opened rear boss 16 and played the effect of stablizing cant beam 15 like this.Handlebar adopts collapsible handle 3, collapsible handle 3 slip caps are connected on front fork tube 2 upper ends, and this slidably connection structure be provided with latching device 17, be used for opening or folding back locking collapsible handle 3 at folding bicycle, collapsible handle 3 is provided with latching device 17, be used to lock open or folded state under collapsible handle 3, front-wheel 1 is arranged on the lower end of front fork tube 2, trailing wheel 10 is installed in the bottom of back breeches pipe 12, saddle 7 adopts the mode of slip socket to be arranged at the upper end of seat pipe 8, and this slidably connection structure be provided with latching device 17, be used to adjust height with stationary bicycle saddle 7, drive system 20 is the two-stage speed change system, fluted disc 13 before comprising, rear tooth disk 9, coaxial freewheels 11, back breeches pipe 12 tops are provided with preceding fluted disc 13, trailing wheel 10 is provided with rear tooth disk 9, the bottom of preceding fluted disc 13 is provided with coaxial freewheels 11, coaxial freewheels 11 is provided with two fluted discs of size and is connected with preceding fluted disc 13 with rear tooth disk 9 respectively by chain, by this two-stage speed change, increased the revolution ratio of preceding fluted disc 13 and rear tooth disk 9.Brake system 21 is arranged on the front-wheel 1 and trailing wheel 10 of bicycle, controls by the handle 22 that is arranged on the handlebar 3, is used for the advance braking of process of bicycle.

As shown in Figure 2, when folding bicycle folds, earlier the latching device on the cant beam 15 17 is unclamped, two folding rods 5 are upwards carried respectively, draw in to folding rod 5 along groove 18 with front fork tube 2 hinged folding rods 5, after this folding rod 5 becomes level, below with front fork tube 2 hinged folding rod 5 these folding rods 5 of income, trailing wheel 10 and front-wheel 1 are drawn close mutually simultaneously, cant beam 15 and front fork tube 2 also arrive together, and back breeches pipe 12 and seat pipe 8 also arrive together, unclamp the latching device 17 of seat pipe 8 upper ends, saddle 7 is recovered to seat pipe 8 upper ends, fastening again latching device 17.Unclamp the latching device 17 of front fork tube 2 upper ends, in collapsible handle 3 income front fork tubes 2.At last that collapsible handle 3 is folding, behind the fastening latching device 17, folding bicycle is folding to be finished.Folding distribute before and after finishing the back two-wheeled, and on same straight line, under this state, still can carry out, be convenient for carrying and little space in mobile.

Claims

1, a kind of folding bicycle, comprise vehicle frame (4), front-wheel (1), trailing wheel (10), saddle (7), drive system (20), brake system (21), handlebar (3), front fork tube (2), back breeches pipe (12) and seat pipe (8), it is characterized in that: described vehicle frame (4) also comprises cant beam (15) and strut bar (14), one side of described front fork tube (2) is installed with, following lug (61,62), described seat pipe (8) top is installed with lug (6), the bottom is hinged on the back breeches pipe (12), one end of described back breeches pipe (12) is hinged with folding rod (5), the other end of described folding rod (5) is hinged on the upper lug (61), described trailing wheel (10) is installed in back breeches pipe (12) bottom, described drive system (20) is installed in back breeches pipe (12) bottom, one end of described cant beam (15) is hinged on down on the lug (62), the other end of cant beam (15) is hinged with folding rod (5), the other end of described folding rod (5) is hinged on the lug (6), bottom surface at back breeches pipe (12) and cant beam (15) is installed with end lug (63) respectively, and the two ends of described strut bar (14) are hinged on respectively on the end lug (63).

2, folding bicycle according to claim 1, it is characterized in that: described drive system is the two-stage speed change system, comprise preceding fluted disc (13), rear tooth disk (9), coaxial freewheels (11), described back breeches pipe (12) is provided with preceding fluted disc (13), trailing wheel (10) is provided with rear tooth disk (9), the bottom of fluted disc (13) is provided with coaxial freewheels (11) before described, and coaxial freewheels (11) is provided with two fluted discs of size and is connected with preceding fluted disc (13) with rear tooth disk (9) respectively.

3, folding bicycle according to claim 1 is characterized in that: described back breeches pipe (12) is arranged in a crossed manner with cant beam (15).