CN2173201Y

CN2173201Y - Easily folding type tricycle

Info

Publication number: CN2173201Y
Application number: CN 93203769
Authority: CN
Inventors: 连勇; 丁林喜
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-28
Filing date: 1993-02-24
Publication date: 1994-08-03
Anticipated expiration: 2003-02-24

Abstract

The utility model provides an easily folding type tricycle which can be used as a transport facility in people's daily life. The rear shaft of the tricycle is composed of three parts, wherein, the parts which are arranged at both sides of the utility model can be pulled out and pushed in so that distance between two wheels can be shortened and extended, and a box body part can be pulled apart or overlapped along with the extension and the shortening of the rear shaft. When tricycle boxes are opened, the utility model can be used as a tricycle; when the rear shaft is shortened, the tricycle boxes are overlapped, two wheels stay near, and the utility model can be used as a bicycle for riding use. The utility model has the advantages of novel moulding, reasonable structure, convenient operation, and small ground occupation for storage, solving the problems of bulkiness and large ground occupation for tricycles.

Description

Easily folding type tricycle

The utility model is to belong to the three-wheel vehicle of using as transport facility in people's daily life.

Sell on the market now and homemade three-wheel vehicle is to be made of vehicle frame, handlebar that a fixed-size compartment and two wheels are mixed bicycle use.There is such problem in it, and floor area is big, uses also inconveniently, heavy again, particularly under the not rich situation of current living space, just seems more inconvenient, and limitation is also big on the purposes.

The purpose of this utility model is the three-wheel vehicle that a kind of light open-type will be provided, and the compartment is changeable, can be used as three-wheel vehicle when opening and uses, and the time-out that contracts is ridden when bicycle, and floor area is little, and is easy to use.

The utility model is achieved in that the rear axle of three-wheel vehicle divides three parts, middle rear axle, left rear axle and right back axle.Middle rear axle is a tubulose, and rear axle one end in the left and right sides is a tubulose, and the other end is solid.In the rear axle, one can enter in another axle when meeting in axle, has a connecting element to be fixed during left and right sides rear axle can insert simultaneously.During use,, earlier connecting element is unclamped, left and right sides rear axle is pushed away toward middle rear axle in, and left rear axle or right back axle enter in right back or the left rear axle and reach minimum position, again connecting element is fixed, ride as bicycle if with the three-wheel vehicle time-out that contracts.Use otherwise just can draw back as three-wheel vehicle.

The envelope of three-wheel vehicle links to each other with rear axle, can widen or dwindles with the elongation of axle and shortening.Envelope is divided into center fixed envelope (fixing), left and right sides envelope (can along about the track on the center fixed envelope movable).When envelope dwindled with rear axle, left and right sides envelope advanced to the center fixed envelope together along track, and left and right sides envelope can overlap in the center fixed envelope, otherwise envelope can be opened.

The utility model since axletree and compartment can draw back and dwindle, so this three-wheel vehicle can be wide can be narrow, so floor area is little, use and deposit all to make things convenient for.Used unit belongs to general workpiece, so manufacture easily, cost can not increase yet yet.

The concrete structure of utility model is by following example and its description of drawings:

Fig. 1 overall structure scheme drawing of the present utility model;

Fig. 2 rear axle section of structure of the present utility model;

Fig. 3 carriage body structure figure of the present utility model;

The section-drawing of Fig. 4 spring set pin of the present utility model.

Describe CONSTRUCTED SPECIFICATION of the present utility model and condition of service in detail below in conjunction with accompanying drawing:

In the light open-type three-wheel vehicle shown in Fig. 1, during left rear axle (2) and right back axle (3) insert simultaneously in the rear axle (1), and with in fixing spring pin (7) confutation at rear axle (1) two ends so that three rotations together when travelling.In order to make three-wheel vehicle when opening, reach spacing purpose, between left rear axle planar axes bearing (10) and middle rear axle planar axes bearing (11), add spacing screw rod (9), one end of its threaded button is screwed in the inferior horn place of left rear axle planar axes bearing (10), adding nut then fixes, the other end can make spacing screw rod move around in the hole in the hole greater than screw diameter of middle rear axle surface bearing (11).Remove (8) fastening with check screw again when moving to when spacing.Opposite side also is in like manner, and two screw rods does not bump against when dwindling in order to make, so its spacing screw rod is positioned on the top.

Envelope divides center fixed envelope (4), left envelope (5), right envelope (6).Left and right sides envelope can outwards pull out in center fixed envelope (4) or advance to the centre.For smoothly convenient, reach Min. when dwindling, make an envelope dimensionally greater than another envelope.Welded rails (12) on the center fixed envelope separates former and later two sides of left and right sides envelope as shown in Figure 3, does not collide each other.The bottom of left side envelope (5) and the top of left rear axle planar axes bearing (10) are connected, and the track (12) of the top of envelope and center fixed envelope (4) contacts.Left side envelope (5) swivel motion of and then coming together when left rear axle (2) slidably reciprocates in middle rear axle (1).Its right envelope part in like manner.Center fixed envelope and left and right sides envelope form a complete compartment when opening like this.

By middle rear axle (1) shown in Fig. 2 is a tubular body, and respectively there is the platform of an edge planar axes bearing at its two ends, also has the screw thread of a peace flywheel.Respectively there is a fixedly screw hole of left and right sides fixing spring pin at place, two ends at middle rear axle (1).The left side internal diameter of the forebody external diameter of left rear axle (2) and middle rear axle (1) is identical and itself also be a tubular body, the external diameter of the tubular portion of its internal diameter and right back axle (3) with.Purpose is that right back axle (3) also enters in the left rear axle (2), at this moment can make rear axle reach the shortest, the envelope minimum when left and right sides rear axle enters middle rear axle (1) simultaneously and meets in the middle of inherent.The tubular tip of left rear axle (2) has a groove, opens 2 square holes in the groove, and its size is more bigger than the fixed leg of spring set pin.This square hole is for making spring set pin fixedly left rear axle (2) and middle rear axle (1) usefulness.Half end in addition of Y-axis (2) is an entity, and wheel usefulness is installed, and there is the platform of mounting plane bearing at the middle part.The diameter of right back axle (3) tubular portion and the right-hand member internal diameter of middle rear axle are same, and other structure and left rear axle (2) are with (structure of left and right sides rear axle can be exchanged).

Fixing spring Xiao's (7) structure as shown in Figure 4, the fixed leg in the middle of it is square and has an opposite face to make to have gradient shape, so that slide up and down under the fixed leg action of the spring within it in the middle of when left and right sides rear axle is pulled out and advanced.

Because the centre of middle rear axle (1) all is empty, in during installation left and right sides rear axle being inserted respectively in the rear axle about 20～30 millimeters, the place, two ends removes check screw handle again with fixing spring Xiao confutation and tightens, a Here it is three-wheel vehicle of finishing.

During use, when needs the three-wheel vehicle time-out that contracts, at first unclamp check screw and remove handle, with hand two wheels are pushed away to the centre then.Left and right sides rear axle enters in the middle rear axle simultaneously, when diaxon meets, right back axle (3) just enters in the left rear axle (2), when reaching the shortest position, fixing spring Xiao in the outer stomidium of middle rear axle just in time falls into the square hole of the close solid axle head of left and right sides rear axle (when advancing in the middle of the rear axle of the left and right sides, because there is the gradient on the two sides of fixing spring Xiao's fixed leg, so under thrust, the fixed leg pressuring spring that upwards slides, when fixed leg is aimed at the square hole of left and right sides rear axle, fall in the square hole in the elastic force effect) middle rear axle and left and right sides rear axle are refuted together, again check screw is removed tightening.At this moment rear axle (1) and left and right sides rear axle rotated together during flywheel rotated and just can drive, because of wheel is to be fixed on also just rotating on the rear axle of the left and right sides thereupon.When rear axle shortened, left and right sides envelope was overlapped together near reaching envelope three at last to the center fixed envelope along the track on the center fixed envelope.At this moment just can be used as bicycle rides and has used.Same earlier check screw being removed unclamping when needs are opened three-wheel vehicle, then with the hand left and right wheels that pulls outward, and fixing spring Xiao's fixed leg has just come up under the effect of pulling force.It is just motionless when just three-wheel vehicle is maximum when moving the institute extreme position of position-limited lever to, about fixing spring Xiao just in time drops on the back shaft end square hole in, just with middle rear axle confutation, at this moment again left and right sides check screw is removed tightening, and envelope is also opened thereupon, finished breakdown action, at this moment just can use as three-wheel vehicle.

Claims

1, a kind of light open-type three-wheel vehicle, it comprises envelope, rear axle and trailing wheel, it is characterized in that:

Described rear axle divides three parts, middle rear axle, and left rear axle, right back axle, in the rear axle, a left side (right side) rear axle entered in the rear axle of the right side (left side) when diaxon met in middle rear axle during left and right sides rear axle can insert simultaneously, made the extending or shortening of rear axle.

2, light open-type three-wheel vehicle according to claim 1, it is characterized in that middle rear axle (1) is a tubular body, respectively there is a screw hole at its place, two ends, left rear axle (2) and right back axle (3) respectively are that an end is a tubulose, the other end is a solid, one groove is arranged on its tubular portion, 2 square holes are arranged in the groove.

3, light open-type three-wheel vehicle according to claim 1 and 2, the left internal diameter that it is characterized in that the forebody external diameter of left rear axle (2) and middle rear axle (1) with, the external diameter of its internal diameter and right back axle (3) tubular portion together, so that when in left and right sides rear axle enters, meeting in the rear axle, right back axle can enter in the left rear axle, the diameter of the tubular portion of right back axle (3) and the right-hand member internal diameter of middle rear axle (1) are same, and other structure and left rear axle (2) are together.

4, light open-type three-wheel vehicle according to claim 1 has a fixing envelope in the middle of it is characterized in that, fixing welded rails before and after the envelope, and both sides have can be with the fixing track of the envelope left and right sides envelope opening and advance in the elongation of rear axle and shortening edge.