CN201009993Y

CN201009993Y - Quick-folding miniature bicycle

Info

Publication number: CN201009993Y
Application number: CNU2007200667059U
Authority: CN
Inventors: 韩宝泰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-01-23
Anticipated expiration: 2017-01-26

Abstract

The utility model discloses a high-speed and foldable mini-type bicycle, which comprises a front a folk, a chassis, a handle bar, pedals, a driving mechanism, a saddle and wheels. The bicycle is characterized in that the chassis is composed of a cross beam, an intermittent vertical lever, a rear wheel bracket, a bottom support, a front vertical cross tube and a branch vertical tube. In normal status, the front vertical cross tube forms a four connecting rod mechanism together with the branch vertical tube, the cross beam, the intermittent vertical lever and the front segment of the bottom support; the intermittent vertical lever forms a triangle stable structure together with the rear wheel bracket and the rear segment of the bottom support; to fold the bicycle, it is only necessary to apply force on a foldable saddle, and the rear wheel bracket can be folded, when the front vertical cross tube and the intermittent vertical lever approach the bottom support to fulfill quick folding. The utility model has the advantages of reasonable design, simple structure, riding speed exceeding traditional bicycles, being foldable and high speed, small volume and convenient utilization and carrying; besides, a foldable rear bag basket can be used as a supporting bracket.

Description

The fast folding miniature bike

Technical field

The utility model relates to a kind of vehicle, particularly a kind of fast folding miniature bike.

Background technology

Bicycle is the fifties main vehicle of Chinese urban and rural residents so far, and in today of city traffic high speed development, Electrical Bicycle, motor bike, automobile etc. are quicker, the vehicle have partly replaced the status of bicycle as the vehicle easily.Existing bicycle can ride instead of walk, transport light-duty goods, but when need not to use, take up an area of bigger, carrying, keeping, deposit all very inconvenient.Though Foldable bicycle is also arranged, often based on doubling, volume is still bigger, carries inconvenience.The CN ZL89214604.4 that the applicant formerly has; ZL92234477.9; ZL97242591.8; ZL00249807.3 is though but fast folding, easy to carry still has weak points such as intensity, volume.

Summary of the invention

The purpose of this utility model is a kind of fast folding miniature bike that provides at the deficiencies in the prior art, and its folding rate is fast, and volume is little, and riding speed is faster, and folding back schoolbag frame can be used as bracing frame, uses, carries all very convenient.

The concrete technical scheme that realizes the utility model purpose is:

A kind of fast folding miniature bike, comprise front fork 1, vehicle frame 5, handlebar 6, pedal 7, transmission device 9, vehicle seat 10, wheel 14, characteristics are that vehicle frame 5 is by crossbeam 2, middle vertical rod 3, rear wheel support 4, underframe 8, vertical tube of front fork 12, divide standpipe 13 to form, front fork 1 is connected with vertical tube of front fork 12 bottoms by bearing, handlebar 6 is located at vertical tube of front fork 12 tops and is captiveed joint with front fork 1, dividing standpipe 13 is " people " font, bottom captive joint vertical tube of front fork 12, top and underframe 8 one ends are hinged, crossbeam 2 one ends are hinged with branch standpipe 13, the other end and middle vertical rod 3 are hinged, middle vertical rod 3 tops are connected with vehicle seat 10, bottom and underframe 8 middle parts are hinged, vertical rod 3 in the middle of rear wheel support 4 one ends are hinged, one end and underframe 8 other ends are hinged, rear wheel support 4 is provided with schoolbag frame 11, crossbeam 2, underframe 8 is provided with extensible member 51, pedal 7 is hinged with underframe 8, wheel 14 is installed in front fork 1 respectively, on the underframe 8, transmission device 9 is connected rear wheel 14, on the underframe 8.

Described extensible member 51 is a pipe fitting, and one end and crossbeam 2 are fixed as one, and the other end and crossbeam 2 are pegged graft, and extensible member 51 is provided with fixing button 52.

Described handlebar 6 is captiveed joint body by body, lock screw 60, connecting panel 61, bearing pin 64, adjust bar 65 are formed with connecting panel 61, connecting panel 61 is hinged by bearing pin 64 and adjust bar 65, and lock screw 60 is installed on the connecting panel 61.

Described pedal 7 by bearing pin 70, pedal plate 71, crank 72, pedal spindle 73 and form, pedal plate 71 and be installed on the pedal spindle 73 by bearing pin 70, pedal spindle 73 is connected with crank 72.

Described underframe 8 is made up of the person in charge 81, back breeches pipe 83,84, connecting panel 80 and five-way joint 82, and five-way joint 82 front ends are connected with the person in charge 81, the rear end is connected with back breeches pipe 83,84; Connecting panel 80 is hinged with the person in charge's 81 other ends.

Described rear wheel support 4 is made up of upper bracket 41, lower bracket 42, foldable base 43, spring 44, rotating shaft 45, and lower bracket 42 is captiveed joint with foldable base 43, and upper bracket 41 is hinged through rotating shaft 45 and foldable base 43, and spring 44 is positioned in the rotating shaft 45.

Described transmission device 9 is made up of sprocket wheel 91, flywheel 92, chain 93, and sprocket wheel 91, flywheel 92 are profile shifting gear.

The utility model is reasonable in design, and is simple in structure, and folding rate is fast, and volume is little, and riding speed surpasses standard bicycle, uses, carries all very convenient and folding back schoolbag frame and can do the bracing frame use.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model folded state diagram

Fig. 3 is the utility model handle bar structure scheme drawing

Fig. 4 is the utility model pedal structure scheme drawing

Fig. 5 is the utility model rear wheel support structural representation

Fig. 6 is the utility model Undercarriage structure scheme drawing

Fig. 7 is the utility model transmission device scheme drawing

Fig. 8 is the utility model extensible member structural representation

The specific embodiment

Consult Fig. 8, Fig. 1, be respectively equipped with extensible member 51 on the utility model crossbeam 2, the underframe 8, with crossbeam 2 is example, crossbeam 2 is divided into two sections, extensible member 51 is a pipe fitting, and one end and crossbeam 2 one section is fixing, and the other end and crossbeam 2 another sections are pegged graft, crossbeam 2 these sections are provided with several knock holees, and this knock hole is fixing with extensible member 51 by fixing button 52; When needs elongate or shorten crossbeam 2, select the suitable knock hole positioning instant can.

Consult Fig. 3, the utility model handlebar 6 is captiveed joint body by body, lock screw 60, connecting panel 61, bearing pin 64, adjust bar 65 are formed with connecting panel 61, and connecting panel 61 is hinged by bearing pin 64 and adjust bar 65, and lock screw 60 is installed on the connecting panel 61; When folding, turn lock screw 60 to pressing down, by bearing pin 64, can transfer body one end to vertical configuration to body.

Consult Fig. 4, the utility model pedal 7 by bearing pin 70, pedal plate 71, crank 72, pedal spindle 73 and form, pedal plate 71 and be installed on the pedal spindle 73 by bearing pin 70, pedal spindle 73 is connected with crank 72; When folding, pedal plate 71 and transfer to crank 72 by bearing pin 70 and be parastate.

Consult Fig. 5, the utility model rear wheel support 4 is made up of upper bracket 41, lower bracket 42, foldable base 43, spring 44, rotating shaft 45, and lower bracket 42 is captiveed joint with foldable base 43, and upper bracket 41 is hinged through rotating shaft 45 and foldable base 43, and spring 44 is positioned in the rotating shaft 45; When folding, apply an outside power on foldable base 43, rear wheel support 4 closes up.Foldable base 43 is a convex-shaped, and its face constitutes with different arcs and curve according to the suitable feelings in position.

Consult Fig. 6, the utility model underframe 8 is made up of the person in charge 81, back breeches pipe 83,84, connecting panel 80 and five-way joint 82, and five-way joint 82 front ends are connected with the person in charge 81, the rear end is connected with back breeches pipe 83,84, and connecting panel 80 is hinged with the person in charge's 81 other ends; Underframe 8 is by extensible member 51 extending or shortenings.

Consult Fig. 7, the utility model transmission device 9 is made up of sprocket wheel 91, flywheel 92, chain 93, and chain 93 connects sprocket wheel 91, flywheel 92; Sprocket wheel 91, flywheel 92 are profile shifting gear; Sprocket wheel 91, flywheel 92 improve transmitting ratio to revise the modulus increase number of teeth under diameter unmodified situation.

Consult Fig. 1, during the utility model normal condition, vertical tube of front fork 12 constitutes four-bar linkage with dividing standpipe 13, crossbeam 2, middle vertical rod 3, underframe 8 leading portions, and middle vertical rod 3, rear wheel support 4, underframe 8 back segments constitute a triangle, form a stable structure.

Consult Fig. 2, when the utility model folds, by the foldable base 43 at rear wheel support 4 middle parts, apply an outside power on foldable base 43, rear wheel support 4 is folded, and vertical tube of front fork 12, middle vertical rod 3 dextrorotations at this moment turn to underframe 8 close, can realize fast folding; After folding, schoolbag frame 11 is made bracing frame, with the stable setting of car load.

Claims

1. fast folding miniature bike, comprise front fork (1), vehicle frame (5), handlebar (6), pedal (7), transmission device (9), vehicle seat (10), wheel (14), it is characterized in that vehicle frame (5) is by crossbeam (2), middle vertical rod (3), rear wheel support (4), underframe (8), vertical tube of front fork (12), divide standpipe (13) to form, front fork (1) is connected with vertical tube of front fork (12) bottom by bearing, handlebar (6) is located at vertical tube of front fork (12) top and is captiveed joint with front fork (1), dividing standpipe (13) is " people " font, bottom captive joint vertical tube of front fork (12), top and underframe (8) one ends are hinged, crossbeam (2) one ends are hinged with branch standpipe (13), the other end and middle vertical rod (3) are hinged, middle vertical rod (3) top is connected with vehicle seat (10), bottom and underframe (8) middle part is hinged, vertical rod (3) in the middle of rear wheel support (4) one ends are hinged, one end and underframe (8) other end is hinged, rear wheel support (4) is provided with schoolbag frame (11), crossbeam (2), underframe (8) is provided with extensible member (51), pedal (7) is hinged with underframe (8), wheel (14) is installed in front fork (1) respectively, on the underframe (8), transmission device (9) is connected rear wheel (14), on the underframe (8).

2. fast folding miniature bike according to claim 1 is characterized in that described extensible member (51) is a pipe fitting, and one end and crossbeam (2) are fixed as one, and the other end and crossbeam (2) are pegged graft, and extensible member (51) is provided with fixing button (52).

3. fast folding miniature bike according to claim 1, it is characterized in that handlebar (6) is by body, lock screw (60), connecting panel (61), bearing pin (64), adjust bar (65) are formed, body is captiveed joint with connecting panel (61), connecting panel (61) is hinged by bearing pin (64) and adjust bar (65), and lock screw (60) is installed on the connecting panel (61).

4. fast folding miniature bike according to claim 1, it is characterized in that pedal (7) by bearing pin (70), pedal plate (71), crank (72), pedal spindle (73) and form, pedal plate (71) and be installed on the pedal spindle (73) by bearing pin (70), pedal spindle (73) is connected with crank (72).

5. fast folding miniature bike according to claim 1, it is characterized in that underframe (8) forms by being responsible for (81), back breeches pipe (83), (84), connecting panel (80) and five-way joint (82), five-way joint (82) front end is connected with the person in charge (81), the rear end is connected with back breeches pipe (83), (84); Connecting panel (80) is hinged with the person in charge's (81) other end; Five-way joint (82), the person in charge (81), back breeches pipe (83), (84) are cast into one.

6. fast folding miniature bike according to claim 1, it is characterized in that rear wheel support (4) is made up of upper bracket (41), lower bracket (42), foldable base (43), spring (44), rotating shaft (45), lower bracket (42) is captiveed joint with foldable base (43), upper bracket (41) is hinged through rotating shaft (45) and foldable base (43), and spring (44) is positioned in the rotating shaft (45).

7. fast folding miniature bike according to claim 1, it is characterized in that transmission device (9) is made up of sprocket wheel (91), flywheel (92), chain (93), chain (93) connects sprocket wheel (91), flywheel (92), and sprocket wheel (91), flywheel (92) are profile shifting gear.