CN203766964U

CN203766964U - Foldable type quadricycle

Info

Publication number: CN203766964U
Application number: CN201420162918.1U
Authority: CN
Inventors: 王玉宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-08-13
Anticipated expiration: 2024-04-04

Abstract

The utility model belongs to the technical field of bicycles, and particularly relates to a foldable type quadricycle. The foldable type quadricycle is mainly and technically characterized by comprising a frame body, a saddle, a backrest, pedals, a wheel disc, a handlebar, two front wheels located on the front portion of the frame body, and two rear wheels located on the rear portion of the frame body, a first supporting rod is arranged in the position close to the front portion of the frame body, a wheel disc fixing frame which can swing around the first supporting rod is connected to the first supporting rod through a bearing, a limiting stop ring is arranged on the portion, below the wheel disc fixing frame, of the first supporting rod, the wheel disc with the pedals is arranged at the free end of the wheel disc fixing frame, a first chain wheel and a second chain wheel which are synchronous are arranged on the first supporting rod, the first chain wheel is connected with the wheel disc through a first chain, a second supporting rod is arranged behind the first supporting rod, a third chain wheel is arranged in the position close to the middle of the second supporting rod, and the third chain wheel is connected with the second chain wheel through a second chain. Thus, the foldable type quadricycle can more conveniently advance and can be more conveniently folded, and by means of the first chain and the second chain which are synchronous, it is ensured that the chains can not be disengaged or fall in the rotating process of the wheel disc fixing frame.

Description

Collapsible four-wheeled bicycle

Technical field

The utility model belongs to bicycle technical field, relates in particular to collapsible four-wheeled bicycle.

Background technology

For the elderly, due to bicycle or three-wheel vehicle stability poor, generally adopt four-wheeled ride instead of walk or take exercise.Due to structure, there is following defect in the four-wheeled using at present: one, and in order to improve stability, four-wheeled is larger, carries inconvenience, can not enter elevator and door; Its two, complex structure, cost is high, maintenance and difficult in maintenance, is difficult to promote.

Utility model content

The technical matters of solution of the present utility model is just to provide a kind of simple in structure, easy to carry, collapsible four-wheeled bicycle of being convenient to fold.

The technical solution adopted in the utility model is: comprise support body, vehicle seat, backrest, stretcher, wheel disc, handlebar, be positioned at two front-wheels in support body the place ahead and be positioned at two trailing wheels at rear, near described support body the place ahead, be provided with the first strut bar, on described the first strut bar, by bearing, be connected with the wheel disc fixed mount that can swing around the first strut bar, on the first strut bar below described wheel disc fixed mount, be provided with limit baffle ring, with the wheel disc of described stretcher, be arranged on the free end of described wheel disc fixed mount, on described the first strut bar, be provided with the first synchronous sprocket wheel and the second sprocket wheel, described the first sprocket wheel is connected with wheel disc by the first chain, at described the first strut bar rear, be provided with the second strut bar, at described the second strut bar, near medium position, be provided with the 3rd sprocket wheel, described the 3rd sprocket wheel is connected by the second chain with described the second sprocket wheel, between described the second strut bar and described two trailing wheels, by simulation box of tricks, be connected.

Its additional technical feature is:

The rear end of described vehicle seat is flexibly connected with described support body, and described backrest below is flexibly connected with described support body;

On support body below described back seat, be provided with wheel disc limiting stopper;

On described the first strut bar, be provided with the spacing fixture block of wheel disc.

Collapsible four-wheeled bicycle provided by the utility model compared with prior art, have the following advantages: one, owing to comprising support body, vehicle seat, backrest, stretcher, wheel disc, handlebar, be positioned at two front-wheels in support body the place ahead and be positioned at two trailing wheels at rear, near described support body the place ahead, be provided with the first strut bar, on described the first strut bar, by bearing, be connected with the wheel disc fixed mount that can swing around the first strut bar, on the first strut bar below described wheel disc fixed mount, be provided with limit baffle ring, with the wheel disc of described stretcher, be arranged on the free end of described wheel disc fixed mount, on described the first strut bar, be provided with the first synchronous sprocket wheel and the second sprocket wheel, described the first sprocket wheel is connected with wheel disc by the first chain, at described the first strut bar rear, be provided with the second strut bar, at described the second strut bar, near medium position, be provided with the 3rd sprocket wheel, described the 3rd sprocket wheel is connected by the second chain with described the second sprocket wheel, between described the second strut bar and described two trailing wheels, by simulation box of tricks, be connected, like this, when folding, do not need four wheels folding, advance and fold convenient, and by synchronous the first sprocket wheel and the second sprocket wheel, guaranteed can not cause chain-loose to come off in wheel disc fixed mount rotation process, between described the second strut bar and described two trailing wheels, by simulation box of tricks, be connected, make to turn in vehicle traveling process convenient, avoid toppling over, they are two years old, because the rear end of described vehicle seat is flexibly connected with described support body, described backrest below is flexibly connected with described support body, before folding wheel disc fixed mount, first vehicle seat is raised, wheel disc and stretcher are turned to below-seat, then vehicle seat is put down, and then backrest was fallen, carry convenient, its three, owing to being provided with wheel disc limiting stopper on the support body below described back seat or being provided with the spacing fixture block of wheel disc on described the first strut bar, folding convenient.

Accompanying drawing explanation

Fig. 1 is the structural representation of the collapsible four-wheeled bicycle of the utility model;

Fig. 2 is the plan structure schematic diagram of collapsible four-wheeled bicycle;

Fig. 3 is the structural representation of transmission device;

Fig. 4 is the structural representation at the first strut bar place.

The specific embodiment

Below in conjunction with accompanying drawing, the structure of the collapsible four-wheeled bicycle of the utility model and use principle are described in further details.

As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the collapsible four-wheeled bicycle of the utility model, collapsible four-wheeled bicycle comprises support body 1, vehicle seat 2, backrest 3, stretcher 4, wheel disc 5, handlebar 6, be positioned at two front-wheels 7 and two trailing wheels 8 that are positioned at rear in support body the place ahead, near support body 1 the place ahead, be provided with the first strut bar 9, on the first strut bar 9, by bearing, be connected with the wheel disc fixed mount 10 that can swing around the first strut bar 9, on the first strut bar 9 below wheel disc fixed mount 10, be provided with limit baffle ring 11, with the wheel disc 5 of stretcher 4, be arranged on the free end of wheel disc fixed mount 10, on the first strut bar 9, be provided with the first synchronous sprocket wheel 12 and the second sprocket wheel 13, the first sprocket wheel 12 is connected with wheel disc 5 by the first chain 14, at the rear of the first strut bar 9, be provided with the second strut bar 15, at the second strut bar 15, near medium position, be provided with the 3rd sprocket wheel 16, the 3rd sprocket wheel 16 is connected by the second chain 17 with the second sprocket wheel 13, between the second strut bar 15 and two trailing wheels 8, by simulation box of tricks 18, be connected.Like this, when folding, do not need four wheels folding, advance and fold convenient, and by synchronous the first sprocket wheel and the second sprocket wheel, guaranteed can not cause chain-loose to come off in wheel disc fixed mount rotation process, between described the second strut bar and described two trailing wheels, by simulation box of tricks, be connected, make to turn in vehicle traveling process convenient, avoid toppling over.

The rear end of vehicle seat 2 is flexibly connected with support body 1, and backrest 3 belows are flexibly connected with support body 1, before folding wheel disc fixed mount 10, first vehicle seat 2 is raised, wheel disc 5 and stretcher 4 are turned to vehicle seat 2 belows, then vehicle seat 2 is put down, and then backrest 3 was fallen, carry convenient.

On support body below back seat 2, be provided with wheel disc limiting stopper 19, also can on the first strut bar 9, be provided with the spacing fixture block 20 of wheel disc, folding convenient.

Protection domain of the present utility model is not only confined to above-described embodiment, as long as structure is identical with the structure of the collapsible four-wheeled bicycle of the utility model, just drops on the scope of the utility model protection.

Claims

1. collapsible four-wheeled bicycle, comprise support body, vehicle seat, backrest, stretcher, wheel disc, handlebar, be positioned at two front-wheels in support body the place ahead and be positioned at two trailing wheels at rear, it is characterized in that: near described support body the place ahead, be provided with the first strut bar, on described the first strut bar, by bearing, be connected with the wheel disc fixed mount that can swing around the first strut bar, on the first strut bar below described wheel disc fixed mount, be provided with limit baffle ring, with the wheel disc of described stretcher, be arranged on the free end of described wheel disc fixed mount, on described the first strut bar, be provided with the first synchronous sprocket wheel and the second sprocket wheel, described the first sprocket wheel is connected with wheel disc by the first chain, at described the first strut bar rear, be provided with the second strut bar, at described the second strut bar, near medium position, be provided with the 3rd sprocket wheel, described the 3rd sprocket wheel is connected by the second chain with described the second sprocket wheel, between described the second strut bar and described two trailing wheels, by simulation box of tricks, be connected.

2. collapsible four-wheeled bicycle according to claim 1, is characterized in that: the rear end of described vehicle seat is flexibly connected with described support body, and described backrest below is flexibly connected with described support body.

3. collapsible four-wheeled bicycle according to claim 2, is characterized in that: on the support body below described back seat, be provided with wheel disc limiting stopper.

4. collapsible four-wheeled bicycle according to claim 1, is characterized in that: on described the first strut bar, be provided with the spacing fixture block of wheel disc.