CN2349109Y - Dismountable portable light small tricycle - Google Patents

Abstract

The utility model discloses a dismountable and portable light small tricycle. The front half of the utility model is similar to the common bicycles or small tricycles; the crossing point of vertical forks and horizontal forks of the back half is provided with a left and a right crossing boards for the horizontal forks; a bearing seat and a bearing are respectively arranged on each of the left and the right crossing boards for the horizontal forks; both ends of a drive shaft are installed on the bearing; a flywheel component is arranged on the drive shaft; the left and the right half shafts are fixed to the left and the right rear wheels; the left and the right half shafts are respectively inserted into a hole of a hollow drive shaft for positioning and dismounting. The utility model has the advantages of reasonable design, compact structure, high compactness and flexibility, convenient disassembly, and easy portability, which is beneficial for floor users to prevent theft, and consequently, the utility model is an ideal walk replacing tool for the old, the week, the sick and the handicapped.

Description

Detachable portable type gently makes kiddie car

The utility model relates to the vehicle of people's daily life as the usefulness of riding instead of walk, and is especially relevant with the light kiddie car of detachable portable type.

Three-wheel vehicle is a three point support, and riding safety is comparable with the bicycle of non-2 supportings of stability, and this reason is that ordinary person all can experience.The manual tricycle of domestic production at present has large, medium and small three types, and large-scale and medium-sized all as simple and easy transportation means use, small tricycle people major part is based on the walking-replacing tool use.China steps into aging country gradually, as the walking-replacing tool of the safe kiddie car of cleaning cheapness, and extremely the elderly's welcome, its market enlarges rapidly.Remove this and also have a great deal of people who suffers from some disease also the safety because of kiddie car is good, all change and ride kiddie car and ride instead of walk, heart disease is wherein arranged, patients such as hypertension, U.S. Nissl disease and epilepsy; Also have some can middle aged men and women by bike do not select yet with riding safety easily kiddie car ride instead of walk.Account for more than 70% as its running vehicle user among city dweller's the kiddie car user according to investigations.Above-mentioned these residents are not walking when having kiddie car on the market in the past, and they thirst for improving the quality of life of self.Existing kiddie car based on cargo transport is as walking-replacing tool, owing to have container, result of use is not satisfactory, because its structure design is as the traditional scheme consideration of transportation means.This kiddie car quality reaches the 35-45 kilogram usually; Front and back wheel wheelbase 1250mm-1350mm, length overall is about 2000mm, and beam overall is about 700mm, and it is overweight to exist quality, oversize, and the effort of riding is upward carried deficiencies such as inconvenience downstairs.

The purpose of this utility model be for the old,weak,sick and disabled person provide a kind of light, flexible, ride laborsavingly, detachable, be convenient to step on the building and carry and be beneficial to the theft-proof kiddie car of keeping.

For achieving the above object, technical solution of the present utility model is such: the detachable light kiddie car of portable type is by vehicle frame, front-wheel, left rear wheel, off hind wheel, front axle, front fork, handlebar, sprocket wheel, the crank pedal assembly, flywheel, chain, chain guard, front brake, back brake, saddle, left side chain stay fishplate bar, right chain stay fishplate bar, hollow actuating shaft and left half axle and right axle shaft are formed, about two chain stay fishplate bars be located at upright fork and chain stay intersection, respectively be provided with bearing seat and bearing on the two chain stay fishplate bars, the axle drive shaft two ends are installed on the bearing, axle drive shaft is provided with flywheel assembly, left half axle is captiveed joint with left rear wheel, right axle shaft is captiveed joint with right back axle, left and right sides semiaxis inserts in the drive shaft hole respectively, and positions.

For making the utility model size compact more, left half axle and right axle shaft are designed to telescope type mutually, and locate the fixing of spiral pin realization and axle drive shaft by left half axle location spiral pin and right axle shaft.

But flywheel Position Design of the present utility model becomes the left and right adjusting type, and flywheel is fixed on the flywheel-bracket, and flywheel-bracket is enclosed within on the axle drive shaft, and fixing by holding screw realization and axle drive shaft.

The utility model becomes the anti-rotational vehicle frame by the kiddie car force-bearing situation with Vehicle Frame Design, and promptly the chain stay on the vehicle frame is designed to the square thin-wall pipe fitting by antitorque requirement, and dowel bar is set between the chain stay, between chain stay and the saddle pipe reinforced rib is set.

Because the utility model has adopted above-mentioned technical solution, thereby has following beneficial effect: (one) reasonable in design, compact dimensions, small and exquisite flexible, it is light laborsaving to ride; (2) in light weight, economical with materials, cost-cutting; (3) detachable, be easy to carry and step on the building, it is antitheft to be beneficial to keeping; (4) vehicle frame is pressed mechanics principle design, good integral strength; (5) for numerous the old,weak,sick and disableds people provides a kind of running vehicle very easily, in sum, the utlity model has good economic and social benefits, popularizing application prospect is wide.

Below in conjunction with accompanying drawing example of the present utility model is described in further detail.

Fig. 1 is the back view of the light kiddie car of the detachable portable type of the utility model.

Fig. 2 is the lateral plan of the light kiddie car of the detachable portable type of the utility model.

Fig. 3 is the birds-eye view that the combination rear axle of the light kiddie car of the detachable portable type of the utility model splits out.

Fig. 4 is the lateral plan that the combination rear axle of the light kiddie car of the detachable portable type of the utility model splits out.

Fig. 5 is the assembly drawing of the combination rear axle of the light kiddie car of the detachable portable type of the utility model.

Fig. 6 is the antitorque vehicle frame figure of the light kiddie car of the detachable portable type of the utility model.

Fig. 7 is the shelf figure of the light kiddie car of the detachable portable type of the utility model.

Fig. 8 is the rear guard figure of the light kiddie car of the detachable portable type of the utility model.

The design of this car, first part be by front axle 44, front-wheel 33, and front fork 34, front brake 36, handlebar 38, axis 40, left and right crank pedal assembly 28,31, sprocket wheel 41, chain 43, chain guard 42, institutes such as saddle 39 form.The left rear wheel 29 of first part and latter part, off hind wheel 32, parts such as rear-wheel brake 9 and flywheel 16, all the small-wheel bicycle with 20 cun is identical or approaching.

The latter part is formed by making up rear axle and left rear wheel 29 and off hind wheel 32; The combination rear axle is formed (see figure 5) by axle drive shaft 13, left half axle 4 and 17 3 axles of right axle shaft; Left and right sides semiaxis inserts in the axle drive shaft 13, and left half axle 4 may be nested in the deep hole of right axle shaft 17 when shortening, and can make axle drive shaft 13 size reductions to the shortest like this, compact conformation.Left side axle skin 3 is arranged ball bearings on left half axle 4 with two, adorn left back wheel rim and left rear tire 29 on the axle skin of a left side, like this left half axle 4 and left rear wheel 29 usefulness nuts 1 and spring washer 2 fixedly are assembled into assembly, can be disposable left rear wheel 29 and left half axle be packed in the axle drive shaft 13, also can disposablely from axle drive shaft 13, split out.Right axle shaft 17 links with right axle skin 24 usefulness flat keys 25, so can powered vehicle advance, claims imput shaft, and they also are by nut 27, and spring washer 26 will be taken turns with semiaxis and is mounted to an assembly, easy accessibility.Left and right sides semiaxis and axle drive shaft connect by spiral pin 18 and 12: left half axle 4 connects with spiral pin 12 with axle drive shaft 13, and right axle shaft 17 connects with spiral pin 18 with axle drive shaft 13.Graticule on semiaxis aligns with driveshaft end, and on time, spiral pin just can successfully insert in the knock hole of axle drive shaft and semiaxis its punctuate with the driveshaft end punctuate, and this moment, three axles were unified into a built-up shaft; Spiral pin can be passed to semiaxis with the moment of torsion of axle drive shaft 13, passes to wheel by semiaxis, and wheel can drive.Because axle drive shaft 13 is by having adorned the bearing seat 6 and 21 of left bearing 7 and right bearing 22, and link with bolt 19 and chain stay fishplate bar 8,20; The fishplate bar connection holes is a strip shape, can integrally-regulated rear axle, and make chain 43 amounts of deflection reach the regulation requirement.The side force of wheel can be passed to axle drive shaft 13 by semiaxis and spiral pin, passes to vehicle frame 30 at last, so spiral pin will bear the driving torque of wheel and the friction stress that side force causes, in the material of spiral pin and the processing certain requirement is arranged.Because semiaxis is to insert axle drive shaft, see that then the insertion of semiaxis partly is equivalent to the insertion end of cantilever beam if counter-force and load turned around, length and the quality of fit that inserts part there is certain requirement; Be simplified to a combination single supported beam as making up rear axle, then semiaxis inserts and partly is subjected to maximum moment of flexure, and semiaxis inserts intensity and rigidity partly and should meet the demands, and this is related to the safety and the service life of car.When riding on the road that car is jolting, because of the trailing wheel counter-force can cause additional torque to vehicle frame, this is this tricycle frame stressing conditions different with cycle frame, so designed antitorque unitized frame 30 especially.Though the upright fork of vehicle frame can be born the part moment of torsion, but it is mainly antitorque during design by chain stay, so chain stay 47 is all made with square hollow and thin-walled tubing, and on the fork arm of the chain stay left and right sides, be provided with twice dowel bar (see figure 6), add at the node place of fork arm and middle shaft adapter and saddle pipe and welded two reinforced ribs to strengthen the anti-twisting property at node place.Flywheel 16 is fixed on the flywheel-bracket 14, and flywheel-bracket 14 is enclosed within on the axle drive shaft 13, and realizes with axle drive shaft 13 fixing by holding screw 15.The flywheel 16 on the axle drive shaft and the brake wheel of back brake 9 all by its support 14 and 11 and with holding screw 15 and 10 flywheel 16 and brake wheel are adjusted to the tram of installation, have improved the comfort feature of the assembly and repair of car.The Y- axis bolster 6,21 of axle drive shaft 13 comprises on its left and right sides bearing cap shim 5,23 and is equipped with shape of the mouth as one speaks oil proof rubber seal ring, prevents that the excessive and dust of lubricating grease from entering bearing, improves bearing service life and reduce maintenance.In order to make light kiddie car also can or take the band visitor with a heavier article, this car has designed annex shelf 45 and trailing wheel fender 46 is chosen for the user, does not have on the basical traditional model master car.

In order to make the user can be with a portable item, on handlebar 38, be provided with hanging goods basket 35, and can hang from handlebar at any time and open.At the right-hand bicycle bell 37 that is provided with of handlebar 38, also be the bicycle general part.

The design of this car has light and handy little characteristics, and it is safe, durable, use finishing convenient, horizontal and the fore-and-aft stability that in the design car load is travelled, the intensity of each part, rigidity and durability were all made detailed calculated, had done innovation on its structure design on the basis of having analyzed external and domestic some like product.

Claims (5)

1, the light kiddie car of a kind of detachable portable type, comprise vehicle frame (30), front-wheel (33), left rear wheel (29), off hind wheel (32), front axle (44), front fork (34), handlebar (38), sprocket wheel (41), crank pedal assembly (28), flywheel (16), chain (43), chain guard (42), front brake (36), back brake (9) and saddle (39) is characterized in that: the write off container, do not make up rear axle and left chain stay fishplate bar (8) and right chain stay fishplate bar (20), the combination rear axle is by hollow actuating shaft (13), left half axle (4) and right axle shaft (17) are formed, about two chain stay fishplate bars be located at upright fork and chain stay intersection, respectively be provided with left shaft holder (6) and right bearing seat (21) on the two chain stay fishplate bars, and bearing (7) be set on bearing seat, (22), axle drive shaft (13) two ends are installed in bearing (7), (22) on, axle drive shaft (13) is provided with flywheel assembly, and left half axle (4) is captiveed joint with left rear wheel (29), and right axle shaft (17) is captiveed joint with off hind wheel (32), left and right sides semiaxis inserts respectively in axle drive shaft (13) hole, and positions.

2, the light kiddie car of detachable portable type according to claim 1 is characterized in that; Left half axle (4) and right axle shaft (17) be intussusception mutually, and locatees connecting of spiral pin (18) realization and axle drive shaft (13) by left half axle location spiral pin (12) and right axle shaft.

3, the light kiddie car of detachable portable type according to claim 2, it is characterized in that: flywheel (16) is fixed on the flywheel-bracket (14), flywheel-bracket (14) is enclosed within on the axle drive shaft (13), and fixing by holding screw (15) realization and axle drive shaft (13).

4, according to claim 1 or the light kiddie car of 2 or 3 described detachable portable types, it is characterized in that: the chain stay (47) on the vehicle frame (30) is designed to the square thin-wall pipe fitting by antitorque requirement, dowel bar two roads are set between two chain stays, establish reinforced rib between chain stay (47) and the saddle pipe.

5, the light kiddie car of detachable portable type according to claim 4 is characterized in that: the speed ratio between sprocket wheel (41) and the flywheel (16) is between 2.2 to 1.8.

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