CN2067248U

CN2067248U - Collapsible tricycle

Info

Publication number: CN2067248U
Application number: CN 89209600
Authority: CN
Inventors: 安振之
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-10-14
Filing date: 1989-10-14
Publication date: 1990-12-12

Abstract

Disclosed is a deposit collapsible tricycle which relates to an improvement on a bicycle. The utility model is additionally provided with a carrier body on the basis of the original bicycle; the cross beam at the bottom is a double-cross structure; the lower end of the double-cross is hinged on the side carriers of the carrier body, and the upper end can slide up and down along the slide way of the vertical beam of the carrier body; thus two side carriers of the carrier body can folded together or expanded. The carrier body which is provided with two wheels and the improved bicycle can be assembled into a tricycle by a connection sleeve. The collapsible tricycle can be deposited, and has simple structure and a plurality of functions.

Description

Collapsible tricycle

The utility model relates to a kind of improvement of bicycle

" back bikini " light tricycle that present people generally use, its structure is that the cycle frame front portion is sliced off, burn-on a vertical shaft and anterior shelf body are connected and form.In order to finish manned cargo-carrying function.There are two disadvantages in this light tricycle: the one, the shelf body be fix, volume is big, it is big to take up an area of the space, be not easy at indoor storage; The 2nd, in order to change a social system a three-wheel vehicle, need destroy a bicycle, can only use by the bicycle list.

The purpose of this utility model provide a kind of simple in structure, repacking is convenient, easy to use, deposit, contractile tricycle.

The utility model is by the shelf body, and car body is formed voluntarily, as Fig. 1.The crossbeam of shelf body bottom is the diesis frame shape that two groups of four isometric Metallic rod 1 are formed, each bar of cross bar can be respectively around axostylus axostyle 2 rotations by its center, two bogie side frame bottoms of shelf body are rectangular frame 3, two side wheels are installed in the middle of it, and the top of side frames is that longeron 4 and upright beam 5 are welded.Two groups of slideways that upright beam is middle fluting in the middle of it.The end of the diesis frame crossbeam of shelf body is welded into rectangular frame with four bars 6 respectively.The end points of its two bars in top can move up and down along the slideway of upright beam, and the two rod end points in bottom are hinged with the end points of four isometric columns 7 of bogie side frame bottom welding.Like this, cross hack lever side frames when the rotation of its center is deployable or close up.Shelf body one end has reflexibie crossbeam 8 and column 9, and column 9 can be around its axis rotation, is the steering shaft of car load when travelling.Column 9 is connected by weldment on it and the adapter sleeve that encases the bicycle front fork column.Like this, after bicycle gives and lays down front-wheel earlier, just can form " back 3 a points " formula three-wheel vehicle with the shelf body, the front-wheel of laying down can be contained on the shelf body and use as a side wheel, in order to exempt the trouble of gear shift, with thin nut locking bicycle front-wheel axle bumper, the adapter sleeve keystone configuration that encases the bicycle front fork column as shown in Figure 3.Its main portion is the two and half gardens pipe that encases the front fork column, and all the other be connecting panel, is welded into one or makes blanked part, and symmetrical two connect with screw.

The utlity model has structural principle simple, use and deposit conveniently, a car how with, be convenient to characteristics such as maintenance, cost be not high, can at any time bicycle be repacked into the three-wheel vehicle use.

Accompanying drawing 1 is the utility model structural representation.

Accompanying drawing 2 is the utility model contracting mechanism principle schematic.

Accompanying drawing 3 is the utility model adapter sleeve structure principle chart.

Below in conjunction with accompanying drawing the utility model is further described, shelf body of the present utility model is collapsible mechanism.See Fig. 2, two groups of cross bar AB, CD equate with four pole lengths of A ' B ', C ' D ', its mid point is respectively O, O ', two groups of each bars of cross bar can be respectively around the spindle rotation by O, O ', between its corresponding endpoint AA ', BB ', CC ', DD ' is with bar and is rigidly connected, and composition can be around two rectangular frame ABB ' A ' and CDD ' C ' of OO ' axis rotation.Rectangular frame MNQP and M ' N ' Q ' P ' are two bogie side frame main structures of shelf body, and its MP, NQ, M ' P ', N ' Q ' are four isometric slideways of middle fluting, and C, C ', B, B ' can move up and down along slideway.AM, A ' N, DM ', D ' N ' are four isometric vertical columns, and A, the A ' of ABB ' A ' and CDD ' C ' framework, D, D ' hinged with this four root posts end points.Like this, upwards carry the arbitrary bar among CC ', OO ', the BB ', the both sides of shelf body are just drawn close to the centre, are retracted to together.Otherwise CC ', BB ' depress, and draw close to MN, M ' N ', and the shelf body just is expanded to the wideest point.The size of each rod member is decided by car load width and stressing conditions, the shelf body of this spline structure can be formed forward type (laying down front-wheel) with bicycle, side-mounted, rear-mounted (not unloading front-wheel) three-wheel vehicle, also can make hand barrow separately, Fig. 3 is for encasing the adapter sleeve at bicycle rack front fork column position " four-way ", be to strike out two (or weldment is good) of symmetry by the steel plate about 3mm, be formed by connecting with screw, they are 11 years old, 13 indication places are the semicircle pipe, internal diameter is identical with the bicycle rack body region that he is encased, 10, locate to plate 10 places and front vehicle frame with screw in compression link for 12 liang, long and two-short dash line is a bicycle rack among the figure.For making this product more suitable, need to increase some annexes.As: little front-wheel, front running board, seat, backrest, front wheel brake, container, cradle (it is automobile-used to be the mother and baby) etc.

Claims

1, contractile tricycle is by the shelf body, car body is formed voluntarily, the crossbeam that it is characterized in that shelf body bottom is the diesis frame shape that two groups of four isometric Metallic rod 1 are formed, each bar can be respectively around axostylus axostyle 2 rotations by cross bar center intersection point, two bogie side frame bottoms of shelf body are rectangular frame 3, two side wheels are installed in the middle of it, side frames top is that longeron 4 and upright beam 5 are welded, the slideway that the two groups of upright beams in its middle part are middle fluting, the end of shelf body bottom cross bar crossbeam is welded into rectangular frame with four bars 6 respectively, the end points of its two bars in top can move up and down along the slideway of upright beam, the two rod end points in bottom are hinged with the end points of four isometric columns 7 of bogie side frame bottom welding, and column 9 is connected with the adapter sleeve that encases the bicycle front fork column by the weldment on it.

2, contractile tricycle according to claim 1 is characterized in that shelf body base cross members is a diesis frame shape structure.

3, contractile tricycle according to claim 1 is characterized in that the bicycle front fork column encases with adapter sleeve, and 10,11 is the semicircle steel pipe, 12,13 is dull and stereotyped, 10,11,12,13 be combined into one, two of symmetries connect with screw, encase the front fork column.