CN2192529Y - Sit-ride type behind bicycle with back and front riding - Google Patents

Abstract

The utility model belongs to the series of bicycles, which is characterized in that the utility model is in a backswept chair type structure. When the utility model is used, the back of a user leans backwards, the legs of the user incline frontward, and feet step on pedals which are arranged on a pedal wheel; when the user grips handlebars, shoulders are vertical, and elbows are bended. A chair can be moved backwards, so the height of the chair descends, and an onward inclination angle and a backward inclination angle can be regulated; the round-backed armchair arm type handlebars can be regulated and are arranged on a bicycle fork on a rear wheel which is used as a directive wheel. The height of the chair is 55 cm to 66 cm, and the height of the pedal wheel is 26 cm to 35 cm; when the pedal wheel is stepped by a circle, cut angles formed by the legs and a horizontal line are less than 45 DEG, and knees are above the horizontal line. An axle shaft of a front wheel is driven by the pedal wheel. When utility model is used, the private parts of the user can not be abraded and pressed, the centers of palms can not be pressed, the legs are not varicose, the waist and the back of the user are comfortable, and the handlebars are easy to grip; the utility model has the advantages of low center of gravity, safety, easy manufacture and easy maintenance; conventional pipe parts are manufactured and assembled into the utility model.

Description

Sit-ride type behind bicycle with back and front riding

The utility model relates to a kind of bicycle, takes new configuration structure, and the person of riding is ridden in the new mode of stepping on of riding.

Conventional bicycle its to ride the mode of stepping on be the formula of stepping on that leans forward down.Ride the saddle disease that is easy to get for a long time, bicycle disease, i.e. centre of the palm redness, ossify in shank swelling back, private parts anus genitals be subjected to the seat cushion mill press, easily cause ailing, sweat stain is felt bad, the high biped of center of gravity can not land at any time, turn at a touch.It is numerous to get on or off the bus, and needs the difficult grasp of handle skill, and traffic accident is many, and especially numerous person in middle and old age of incompatibility and the not good enough person of physique ride.

The purpose of this utility model is exactly in order to overcome above-mentioned shortcoming, easily grasps for people provide a kind of safety and comfort, and the skill center of gravity that need not to get on or off the bus is low, biped can suffer ground, the centre of the palm not swelling of shank, positions such as private parts anus are not subjected to the hardship of mill pressure, laborsaving and lasting bicycle.

The purpose of this utility model reaches by following design and structure.Narrate in conjunction with the accompanying drawings, each figure title numbering is unified.Component names and number as follows in addition:

1, handlebar 2, briquetting 3, rear sleeve 4, rear frame connecting rod 5, hole slot guide rail 6, last crossbeam 7, following crossbeam 8, in step on the wheel 9, front baffle 10, rear frame 11, front axle 12, spring tubing string 13, lower support regulating plate 14, goods bucket 15, handle 16, seat 17, backrest 18, seat vertical frame 19, slotted eye guide plate 20, cover spring post 21, sleeve column stage clip pipe 22, slotted eye guide plate 23, slotted eye guide rail 24, before step on the wheel 25, support tube column 26, preceding seat 27, slotted eye guide plate 28, right flywheel 29, embrace the brake 30 of drawing a bow to the full, rear vehicle fork 31, trailing wheel 32, front-wheel 33, left side flywheel 34, upper support regulating plate 35, upper frame 36, strut bar 37, shelf 38, front vehicle fork 39, backrest arm 40, hook 41, first quarter moon slotted eye rail plate 42, bolt.

h ₁Step on wheel shaft overhead highly, h ₂Cushion height overhead when clear and definite, θ ₁Be the angle that thigh and horizon (last) are handed over, θ ₂Be the angle that thigh and horizon (down) are handed over, θ ₃It is the angle of back layback.

Describe below

Fig. 1 is that human body is ridden the state of stepping on and major part positional structure scheme drawing.What this type car mainly was described in design rides the state of stepping on and structure, and four features are arranged:

(1) make seat with seat 16, can before and after translation, backrest 17 adjustable layback angle θ ₃, make behind and do not ossify by the back is comfortable, there is dividing potential drop to alleviate the body weight pressure of seat 16 to backrest upper body body weight, backrest can help again to be pedaled, and seat is the position after stepping on wheel 8, promptly move behind the seat, and falling head makes center of gravity step-down, h ₂Be advisable for 55cm-66cm is no more than 70cm, biped can be a principle with suffering, be difficult for tumbling, but that This vehicle stops frequently need not to get on or off the bus is numerous, and handle 15 is easily grasped and be need not skill, and traffic accident must be fallen.

(2) step on the feature of taking turns: step on overhead height h of wheel with seat ₁Be advisable h about 26-35cm ₁And h ₂After fixing, make the person's of riding both legs unfold to stretch to pedal before can be oblique and be principle, θ ₂＜45 ° and θ ₁＜30 °, any leg is scrunching weekly assembly formation θ ₁And θ ₂Become oblique shape to stretch to pedal to make the shank blood circulation to improve, dash no longer down, formation θ ₁Kneecap height goes out horizon during the angle, makes the not swelling of blood following current shank.θ ₁Another effect at angle is that thigh is upwards raised once, adds that the back layback forms θ ₃The angle is lifted genitals anus position on also corresponding, does not press cushion, no longer is subjected to the hardship of back pressure, and airiness is sweat stain not.So h ₁h ₂Relative height is unfolded at thigh and is scrunched time decision θ ₁θ ₂Size, and θ ₁θ ₂θ ₃The comfort conditions of angle decision private parts of human body, shank and back.Seat can before and after translation pedal and reach extended position to adjust stretching of leg, to adapt to scrunching of different heights.θ ₃Be by backrest arm 39 adjust＞90 ° be advisable θ less than 135 ° ₁θ ₂θ ₃h ₁h ₂Determine a human body to scrunch the scope of optimum regime.Because: θ ₁Equalling zero then, knee can not exceed horizon.θ ₃＜90 backs do not have by becoming and lean forward.θ ₂＞45 ° then private parts must be extruded; θ ₃Become human body too greatly and lie low, then neck must be impaired, and visual field is bad!

(3) feature of handlebar 1:

Opposite with conventional car, handlebar (steering handle) on the rear vehicle fork 30 of trailing wheel 31, the trailing wheel wheel of changing direction.Handlebar is pulled arm-typely for circle, and the middle part is pressed in the groove of briquetting 2, and fastening back is rotatable.The handlebar upper-arm circumference is in waist (seat) both sides, and handle just in time makes the person of riding hang down and takes on nature toggle handle in front waist side, and the power of lifting two arms need not be stretched in the centre of the palm not pressurized, and two grasps are just swung the trailing wheel direction to the swing of horizontal cross arcuation, so claim position, back bicycle.

(4) step on the wheel and the feature of front-wheel 32:

Conventional car is to step on the wheel drive trailing wheel, otherwise this type but, steps on the wheel drive front-wheel.Can show on the figure and step on wheel, thereby drive front-wheel 32, drive front-wheel if tricycle then drives front axle certainly with the flywheel on the chain socket front axle.

Bicycle of the present utility model in sum has four features, wherein θ ₁θ ₂θ ₃h ₁h ₂Five key elements make the person of riding be optimum regime, and reach above-mentioned purpose.The bicycle structure that can embody above-mentioned performance is exactly the forward structure of pedaling position before driving after the chair type low center of gravity in back.Project organization principle of the present utility model can be applicable on the bicycle of various different cultivars becomes a series, slightly comes the application of principle of specification below for several embodiment.Still by each figure division.

Fig. 2 is the single stravismus sketch of stepping on two wheel bicycles.Be first embodiment.Also be specializing of Fig. 1.

The arm-type handlebar 1 of round-backed armchair is crushed in the groove in the briquetting 2, and fastening rear bar can rotate in groove, makes handlebar arm handle changing position about in the of 15.The handlebar arm is into the semicircle arcuation and is trapped among the seat both sides, just in time makes the person's of riding shoulder nature toggle handle that hangs down, and briquetting has two grooves, and optional briquetting 2 also can be end for end installation in order to displacement before and after transferring, and makes translation before and after the handlebar.The crossbeam framework is formed crossbeam bone framework by 6 times crossbeams of crossbeam, 7 axis, 8 front vehicle forks 38 and shelf 37 pillar stiffeners 36 on the slotted eye guide rail plate 5 of rear sleeve 3 connecting rods, 4 rear frames 10 and two sides.Thereby axis is stepped on the left flywheel 33 driving front-wheels of wheel 8 with chain drive front axle left side; Mixing seat framework 18 seats 16 trailing wheels 31 rear vehicle forks 30 forms.Hole guide plate 19 under the seat framework be closing on the hole slot guide rail 5 on the rear frame 10, in slotted eye before and after translation and regulating, with bolted it.

Fig. 3 is that the decomposition of seat framework is in conjunction with sketch.

Be that hole slot guide plate 22 is welded on the sleeve column stage clip pipe 21 (3a), will overlap spring post 20(3b) to be inserted in, whole again tipping is (3c) its following grooved hole guide plate 19 among vertical frame 18.Forming left standing frame (3d) is the framework of a side.About 23 two on 16 times grooved hole guide rails of cushion.Collapsing is connected on the hole guide plate 22, can front and back translational adjustment in slotted eye fix after the closing.The 19th, on the hole slot guide rail 5 that is connected on crossbeam rear frame 10 both sides that is used for collapsing.

Fig. 4 is the structural principle sketch of seat back hue angle.

The lower end of backrest 17 both sides backrest arms 39 is that hook 40 middle parts connect first quarter moon grooved rail 41, see 4(1) 4(2).The bolt cap 42 on the hole slot guide rail 23 is firmly sat in curved cover position, and the half-moon groove borehole jack is gone into another bolt head 42 and can be made the backrest arm swing angled along moving in the rail groove, also can oppositely install with bolted, as they (3) (4) of Fig. 4.To bend is that garden heart half-moon groove is the garden week in concentric garden, and the footpath is the spacing of two bolt cap.In fact the backrest angle adjustable and can transfer before and after the seat structure of translation a lot, all can adopt.

Fig. 5 is second embodiment, double positive diagrammatic side views of stepping on two wheel bicycles.

Adjustable seat is placed on the framework, translation before and after can doing by the closing 5 and 19 of hole slot guide rail.Mix two cover drivings device again.This figure is to be that slotted eye guide rail 23 closings under hole slot guide plate 27 and the cushion are arranged on the front baffle 9 at shelf 37, second seat.Step on wheel 24 before connecting one by support tube column 25 and be fixed on the front axle with front vehicle fork 36 again, add one pair of right flywheel 28 on the right side, form fore rider persons' actuating device to step on wheel 24 and right flywheel 28 before the chain socket.

Fig. 6 is the single crossbeam bone framed structure scheme drawing of stepping on little tricycle.

This figure illustrates that front baffle 9 is deformed into quadrangle, and upper support regulating plate 34 is arranged on two sides, and last grooved hole is used for being pressed over lower support regulating plate 13, four ends four groups of spring tubing strings 12, support goods bucket 14, and framework 9 connects crossbeam 6 and 7 up and down.

Fig. 7 is the 3rd the single profile oblique drawing of stepping on little tricycle of embodiment.Supporting regulating plate closing on the front baffle 9 and is installed on the bearing carrier ring on the front axle 11 on lower support tuned plate 13 together.Four spring tubing string 12 support goods buckets 14.Axis is stepped on the flywheel on the wheel drive front axle.

Fig. 8 is that double stepping on kiddie car framework and the double-drive device looked sketch.

Than Fig. 7 is front baffle 9 distortion.Step on before another pair of left side installation in the left flywheel 33 of wheel 24 covers and step on 28 armfuls of brakes 29 of drawing a bow to the full of the right flywheel of wheel 8 sockets.Step on wheel and all drive front axle.The round-backed armchair arm becomes garden shape basically.Former frame frame four ends have spring tubing string 12 to accept upper frame 35, See Figure.

Fig. 9 is the double crossbeam of the framework up and down skeleton diagram of stepping on little three-wheel.

Upper frame 35 of four spring tubing string supports has two hole slot guide rails 27 to accept seat in its left side.Loading hopper 14, See Figure can be pacified in its right side.

Figure 10 is the double little tricycle stravismus dimension sketch of stepping on.Be the 4th embodiment.

Before hole guide plate 27 closings on slotted eye guide rail 23 and the upper frame under the seat 26, also can before and after translational adjustment with fixing.Scheme last two seats and two and step on wheel and form double stepping on, can take turns altogether and step on.One proper container goods bucket is installed on the upper frame of right side.Crossbeam connection underframe is a front baffle 9 up and down.

Four embodiment in sum are a series.Aforementioned four features of tool all.With different wheel number and seats, mix difform framework and parts again and form single double two and take turns three-wheel series bicycle.

Bicycle of the present utility model adopts in addition parts of conventional tubing, only processes non-standard component such as framework seat hole slot guide rail wooden handcart briquetting, mixes 20 o'clock wheels and standardized component and assembles.No technical risk, it is general to make easy-maintaining, is the laborsaving lasting novel bicycle series of a kind of safety and comfort.

Claims (7)

1, a kind of back is forward pedals position bicycle behind the chair type, it is characterized in that: can make the person of riding be that the back is by the oblique forward mode of stepping on of riding that scrunches the toggle handle of both legs dorsad, its structure is a bit architecture behind the chair type; Seat with angle adjustable and front and back translation is a seat, falling head and after move; Handlebar is the adjustable arm-type handlebar of round-backed armchair of front and back up and down, is installed in the trailing wheel car and sticks, and trailing wheel is a steering wheel; Step on the wheel drive front-wheel.

2, bicycle according to claim 1, the front and back translation that it is characterized in that seat be by under the cushion and framework on hole slot guide rail plate, regulate with bolt before and after in slotted eye after the closing mutually.

3, bicycle according to claim 1 is characterized in that: the angular adjustment of backrest is hook and the middle part half-moon groove structure in succession with backrest arm post lower end; Hook catches on a bolt head, and another bolt headgear is gone into hole slot, can be along sliding in the half-moon groove, with bolt; The deep-slotted chip breaker of first quarter moon frid is to be the circumference in the center of circle with the hook, and radius is a distance between two bolt cap.

4, bicycle according to claim 1, it is characterized in that handlebar is crushed in the groove of rear vehicle fork top briquetting, upwards curve the arm-type handlebar of round-backed armchair more forward, two handlebar arms become two semicircle arcuations, be trapped among the seat both sides, the arm end is a handle, can be by the groove of briquetting with the positive and negative installation of briquetting, and following front and back on the adjustable bicycle handlebar.

5, bicycle according to claim 1, it is characterized in that: seat is in the back position of stepping on wheel, falling head, and overhead height is that 55-66cm should not surpass 70cm after clear and definite, step on the overhead high 26-35cm of being of wheel, the two highly determines the degree of unfolding of the state of scrunching; Shank scrunches a week, stretches one's legs when downward and the horizon angle of cut＜45 of cushion ° unfolding, and the horizon that knee will exceed cushion when bending one's legs is as the criterion.

6, bicycle according to claim 1 is characterized in that: trailing wheel is as steering wheel, and the handlebar of swaying direction is installed on the rear vehicle fork of trailing wheel, and the crossbeam framework links to each other with rear sleeve on the rear vehicle fork, and steering wheel is the position behind the person of riding, and is the back bit architecture.

7, bicycle according to claim 1 is characterized in that: step on wheel as drive wheel, by fixing on the chain drive front axle flywheel drive front-wheel, be the position, back and drive.

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