CN2078283U

CN2078283U - Multifunctional folding bicycle

Info

Publication number: CN2078283U
Application number: CN 90213579
Authority: CN
Inventors: 潘望舒
Original assignee: PAN WENGSHU
Current assignee: PAN WENGSHU
Priority date: 1990-07-16
Filing date: 1990-07-16
Publication date: 1991-06-05

Abstract

The utility model relates to a multifunctional folding bicycle which is provided with an n-shaped oblique fork, a centre shaft part, a bolt connecting hinge of a flat fork of a back bicycle frame, bolts, a star-shaped frame, an auxiliary walking wheel and two foot seat plates, wherein, the n-shaped oblique fork is respectively connected with the back bicycle frame by the bolts and insert pins; the centre shaft part is fixedly connected with a movable pipe of the flat fork of the back bicycle frame; the bolt connecting hinge is positioned on the connecting perpendicular of the n-shaped oblique fork and the back bicycle frame; the bolts are used for fixing the movable pipe and a fixed pipe of the flat fork of the back bicycle frame; the star-shaped frame is fixedly connected with the bottom end of the back bicycle frame and is used for accommodating the centre shaft part; the auxiliary walking wheel is provided with a wheel handle matched with bolt fixing holes of the star-shaped frame at the bottom of the back bicycle frame; two shoulder bands with hasps overlapping with a main beam are arranged on the faces of the foot seat plates. After folded, the utility model can be provided with various accessories as required to form a three-wheel cart, a chair, a writing desk, etc.

Description

Multifunctional folding bicycle

The utility model provides a kind of multifunctional folding bicycle, has the affixed forward and backward vehicle frame of girder and girder, handlebar, forward and backward car fork, middle shaft part, chain wheel set and wheel.Belong to technical field of bicycles.

Folding bicycle, it is small and exquisite to have volume after folding, advantage easy to carry.But,, rely on the minor axis pin joint because break is arranged on girder.This car is after repeatedly folding, and the connection accuracy of car load is bad, rides less stable.

At the above-mentioned deficiency of existing folding bicycle, the purpose of this utility model is to provide a kind of folding convenient, and car load connects the precision height, and rider property is good, possesses the folding bicycle of new function after folding again.

The purpose of this utility model realizes by taking following technical measures.

Be provided with:

1 and the back vehicle frame tiltedly pitch with bolted connection and latch bonded assembly Π shape respectively;

2, with the affixed middle shaft part of back vehicle frame chain stay movable tubes;

3, the bolted connection hinge of back vehicle frame chain stay, it is positioned at Π shape tiltedly fork and carriage bolt bonded assembly vertical line place, back;

4, the bolt of fixing moving pipe of back vehicle frame chain stay and motionless pipe;

5, vehicle frame bottom, back is affixed holds middle shaft part The shape framework;

6, auxiliary waking wheel, it has and the back bottom of frame The wheel shank of shape framework barrel bolt fixed orifice;

7, bipod seat has the braces that two bands overlap the girder hasp on the non-foot side plate surface;

Multifunctional folding bicycle when needing to fold, should unscrew chain stay bolt behind the axis, transfers to tiltedly fork latch, rotation rear wheel portion, and 180 ° of cws, at this moment, middle shaft part leaves because of chain stay moves the pipe rotation The shape framework.Car is promptly folding to finish.When 90 ° in rotation trailing wheel portion and by the tightening of chain stay bolt, front wheele part also rotates to parallel with trailing wheel portion, adopts common bolt to tighten or the buckle tightening in rotating shaft place, and the auxiliary waking wheel handle pushes the back bottom of frame Shape framework, and tightening with it.At this moment, folded bicycle has formed three-wheel, can carry out, and can place article thereon, possesses the hand barrow function.If the braces hasp with the bipod seat is overlapped on girder again, then constitute the low center of gravity seat.

Consider and write conveniently, then can be provided with again and stretch the bifoldable plate that bar pierces into the hole after substrate base has shelf.In the time of need writing,, launch flap, constitute desktop, conveniently write stretching bar behind its hole propelling shelf.

Accompanying drawing is the structural representation of multifunctional folding bicycle, below in conjunction with accompanying drawing, is described in detail its most preferred embodiment.In the accompanying drawing, Fig. 1 rides view for multifunctional folding bicycle, and Fig. 2 is back vehicle frame and oblique fork connecting portion structural representation, and Fig. 3 is a chain stay rotating part organigram, and Fig. 4 is the back vehicle frame

Shape framework, chain stay rotating part structure and mutual alignment scheme drawing, Fig. 5 auxiliary waking wheel structural representation, Fig. 6 bipod seat organigram, Fig. 7 folded structure scheme drawing.

Multifunctional folding bicycle, by girder (5) and affixed forward and backward vehicle frame (3), (6), handlebar (2), forward and backward car fork (4), (7) of girder, middle shaft part (10), chain wheel set (9) and wheel (1) constitute.The ∏ shape of this car is tiltedly pitched (7) and is connected with the back vehicle frame with bolt (12) and latch (11), middle shaft part (10) is fixed in the front end of back vehicle frame chain stay movable tubes (14), (16) be the bolted connection hinge of back motionless pipe of vehicle frame chain stay (15) and movable tubes (17), between the motionless pipe (15) of back vehicle frame chain stay and movable tubes (14) bolt of rear end plate (13) is set

Shape framework (18) is fixed in vehicle frame bottom, back.This car also disposes auxiliary waking wheel (20), its wheel shank (19) have and

The fixed bolt hole (21) that the shape framework cooperates; (23) be two leg seats, have the braces (22) of two bands overlap joint girder hasp on the acnemia lateral plates.Flap (25) has two pairs of overhanging straight-bar clearance holes of shelf (24), and (26) are the flap hinges.

The L shaped wheel carrier of wheel shank ［ 19 ］ and road wheel is affixed, and L shaped wheel carrier bottom is provided with the suspended wall pedestal.To be that a kind of two supporting legs are parallel be located at seat one side to two leg seats ［ 23 ］, and seat opposite side end face installs the suspended wall shape bearing that free end has the hasp braces additional.During use, two legs prop up ground, on the braces hasp overlap joint bicycle girder frame, constitute the suspended wall bearing.

Claims

1, a kind of multifunctional folding bicycle has the affixed forward and backward vehicle frame of girder and girder, handlebar, forward and backward car fork, middle shaft part, chain wheel set and wheel, it is characterized in that

Be provided with:

(1) and the back vehicle frame tiltedly pitch with bolted connection and latch bonded assembly ∏ shape respectively;

(2) with the affixed middle shaft part of back vehicle frame chain stay movable tubes;

(3) the bolted connection hinge of back vehicle frame chain stay, it is positioned at ∏ shape tiltedly fork and carriage bolt bonded assembly vertical line place, back;

(4) bolt of fixing moving pipe of back vehicle frame chain stay and motionless pipe;

(5) vehicle frame bottom, back is affixed holds middle shaft part

The shape framework;

(6) auxiliary waking wheel, it has and the back bottom of frame The wheel shank of shape framework barrel bolt fixed orifice;

(7) bipod seat has the braces that two bands overlap the girder hasp on the non-foot side plate surface.

2, multifunctional folding bicycle according to claim 1 is characterized in that being provided with and stretches the bifoldable plate that bar pierces into the hole after substrate base has shelf.