CN2589319Y

CN2589319Y - Back-rest sitting type bicycle

Info

Publication number: CN2589319Y
Application number: CN 02255697
Authority: CN
Inventors: 陈风通
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-29
Filing date: 2002-11-29
Publication date: 2003-12-03
Anticipated expiration: 2012-11-29

Abstract

The utility model discloses a back-rest sitting type bicycle which comprises a front wheel, a rear wheel, a front bicycle frame, a pedal chain wheel mechanism, wherein a connecting frame is connected between the front wheel and the rear wheel; a back-rest bicycle saddle which can move backwards and forwards is arranged on the connecting frame; the pedal chain wheel mechanism is arranged at the front part of the connecting frame, and the shaft center of a chain wheel of the pedal chain wheel mechanism is positioned at the upper part of a wheel shaft of the front wheel; the back-rest bicycle saddle is composed of a chair and a saddle frame, wherein the lower part of the saddle frame is fixedly connected with the connecting frame, the upper parts of the chair and the saddle frame are fixedly connected in a movable mode, and a locking device is arranged at the connecting part. Because the back-rest sitting type saddle is utilized to replace a traditional saddle bicycle seat and the pedal chain wheel mechanism is arranged at the front part of the bicycle, a bicycle rider feels comfortable in a sitting posture owing to the arrangement of the back rest, and the force application direction of a pedal is changed from the original mode that the rider pedals downwards to the mode that the rider pedals forwards. Thereby, under the action of the reaction force of the back rest, the pedaling force of the bicycle rider applied to the pedal is increased, and the rider can ride the bicycle easily. The utility model has the advantages that the rider who sit on the back-rest sitting type bicycle can feel comfortable, and the rider can ride the bicycle in a labor saving mode. Thus, the utility model is suitable for men, women, old and young, tall people, short people, fat people, thin people, etc.

Description

A kind of backrest seat formula bicycle

Technical field

The utility model belongs to daily living article, particularly relates to a kind of backrest seat formula bicycle.

Background technology

Bicycle is a kind of vehicle that can ride instead of walk and advance that drive with manpower, it is the non-motorized vehicles of normal use in our daily life, special China is a bicycle great country, the production output or the number of users of bicycle that are bicycle all are to occupy prostatitis, the world, bicycle need not working power because of it, volume is less, the front and back wheel course is a straight line, still can be advanced freely in narrow and small road, and can park everywhere, need not ad hoc parking place, be subjected to liking of numerous users deeply for this reason; Simultaneously bicycle people's good tool of riding instead of walk and advancing still not also because of it can make under the prerequisite of people's line speed before quickening, obtains once well physical culture enure chance, also is subjected to liking of physical fitness fan for this reason.But because the structure of existing bicycle is to adopt the saddle bicycle saddle, be that people are when using bicycle, the people rides on the saddle vehicle seat, then bipod step on downwards pedal foot-operated, by being located at foot-operated pumping under the saddle vehicle seat, by the foot-operated sprocket rotation that drives, and sprocket wheel has driven the rotation of wheel by the transmission of chain, bicycle is moved ahead, but the gravity that the power of pedaling comes from human body of stepping on owing to human body, when going up a slope, human body to step on the gravity direction of pedaling force direction and human body inconsistent, make the power of pedaling of stepping on of human body fail effectively to implement, the gravity of a part becomes the resistance that moves ahead on the contrary simultaneously, Here it is, and why we can feel very painstaking when going up a slope by bike, need step on to pedal very car is moved ahead; The saddle vehicle seat is owing to there not being backrest to make cyclist's sitting posture very uncomfortable on the other hand.

The utility model content

The purpose of this utility model is to overcome the deficiency of prior art, and a kind of comfort for sitting posture is provided, the backrest seat formula bicycle that firmly saves labour by bike.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of backrest seat formula bicycle, comprise front-wheel, trailing wheel, front vehicle frame, foot-operated chain-wheel mechanism, and the top of front vehicle frame is provided with rotatable handlebar, and bottom and front-wheel are articulated; One link span is connected between front vehicle frame and the trailing wheel, on the link span installing one can before and after the backrest vehicle seat of displacement; Foot-operated chain-wheel mechanism is installed in the front portion of link span, and the sprocket wheel axle center is positioned at the top of front-wheel wheel shaft.

The rear end that joins for link span of described link span and trailing wheel becomes U type shape to connect with the rear axle fixed phase.

Described foot-operated chain-wheel mechanism also comprises the gear mechanism with many gears transmitting ratio.

Described backrest vehicle seat is made up of seat, mounting, and the bottom of mounting connects with the link span fixed phase, the top of seat and mounting for can before and after the fixed phase of displacement connect.

Described seat is made up of chair frame, seat, the chair back, and the chair frame is made of tubular body; Seat, the chair back are made of soft material body, panel respectively, and the soft material body is located on the panel, and connect with the panel fixed phase; Seat, the chair back are separately fixed at bottom, the top of chair frame.

The fixed phase connection place of described seat, the chair back and chair frame is that screw retention links,

The movable fixed phase connection place of described seat and mounting is provided with securing arrangement, securing arrangement comprises screw, screws cap, pad, fastening block, the cap head of screw is fixed in the chair frame of seat, and ailhead passes by the set slotted eye of mounting, and slotted eye is made of mutually side by side two tubular bodies; Be located between chair frame pipe and the mounting pipe with the fastening block that screw spins mutually, and tightly touch mutually with chair frame pipe and mounting pipe; The ailhead that passes slotted eye is connected to pad successively, screws cap.

Described backrest vehicle seat rear portion also articulates a rear deck seat.

Described front-wheel wheel footpath is less than the rear wheel rotation footpath.

The beneficial effects of the utility model are, owing to adopted backrest seat formula vehicle seat to replace traditional saddle vehicle seat, and will ride chain-wheel mechanism and be arranged on the bicycle front portion, its sprocket wheel axle center is positioned at front-wheel wheel shaft top, it is comparatively comfortable owing to be provided with backrest to make cyclist's sitting posture, its foot-operated power thrusts is also changed into by original trampling downwards and pedaling forward, when the cyclist exerts oneself forward, because there is backrest at the rear portion of human body, backrest can produce antagonistic force to the human body both legs, and this power is approximately about 4 times of human body gravity, has increased the pedal power of cyclist to pedal greatly for this reason, make human body firmly very light, climbing very saves labour; The front-wheel wheel footpath of being adopted makes turning to of bicycle very flexible less than the rear wheel rotation footpath; And because the vehicle seat of this structure is provided in a side of on the link span, it is lower that its seat height can be established, and promptly center of gravity is low, thereby can improve the stability of car greatly, increased the degree of safety of driving; Simultaneously because but backrest vehicle seat fore-and-aft adjustment has adapted to personnel's use of differing heights; And because the people is sitting posture, firmly step in the process of pedaling at both legs, waist and belly all can be subjected to the effect of power, in the enure shank, all can produce enure effect preferably to waist and belly, are well suited for physical fitness fan's use.The utility model is a kind of comfort for sitting posture, firmly saves labour by bike, is suitable for men and women, old and young, the backrest seat formula bicycle that the fat or thin personage of grade of height uses.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail; But backrest seat formula bicycle of the present utility model is not limited to embodiment.

Fig. 1 is unitary construction figure of the present utility model;

Fig. 2 is the front view of the utility model backrest vehicle seat;

Fig. 3 is the birds-eye view of the utility model backrest vehicle seat;

Fig. 4 is the cutaway view along A-A line among Fig. 3;

Fig. 5 is the cutaway view along B-B line among Fig. 3.

The specific embodiment

Shown in accompanying drawing, backrest seat formula bicycle of the present utility model comprises front-wheel 1, trailing wheel 2, front vehicle frame 3, foot-operated chain-wheel mechanism 4, and wherein the footpath is taken turns less than trailing wheel 2 in the wheel of front-wheel 1 footpath; The top of front vehicle frame 3 is provided with rotatable handlebar 31, and the bottom of front vehicle frame 3 and front-wheel 1 are articulated; One link span 5 is connected between front vehicle frame 3 and the trailing wheel 2, and link span 5 adopts welding to fix with front vehicle frame 3, and the rear end that joins for link span 5 of link span 5 and trailing wheel 2 becomes U type shape and trailing wheel 2 wheel shafts employing fixed by nut to link; On the link span 5 installing one can before and after the backrest vehicle seat 6 of displacement, foot-operated and the sprocket wheel of foot-operated chain-wheel mechanism 4 is installed in the front end of link span 5, and the sprocket wheel axle center is positioned at the top of front-wheel 1 wheel shaft, foot-operated chain-wheel mechanism 4 links with trailing wheel 2 transmissions by chain 41, gear 42, also can be designed to variable-ratio, promptly on trailing wheel 2, add gear mechanism 43 with many gears transmitting ratio with riding chain-wheel mechanism 4; Also articulate a rear deck seat 7 at the rear portion of backrest vehicle seat 6; Backrest vehicle seat 6 is made up of seat 61, mounting 62, and the bottom of mounting 62 and link span 5 adopts the welding fixed phase to connect, and seat 61 is made up of chair frame 611, seat 612, the chair back 613, and chair frame 611 is made of tubular body; Seat 612, the chair back 613 are made of sponge 614, panel 615 respectively, and sponge 614 is located on the panel 615, and connect with the panel fixed phase; Seat 612, the chair back 613 adopt bottom, the top of screw retention at chair frame 611 respectively, the top of seat 61 and mounting 62 for can before and after the fixed phase of displacement connect; Movable fixed phase connection place at seat 61 and mounting 62 is provided with securing arrangement 8, securing arrangement 8 comprises screw 81, screws cap 82, pad 83, fastening block 84, the cap head of screw 81 is fixed in the chair frame pipe 6111 of chair frame 611 of seat 61, ailhead passes by the set slotted eye 621 of mounting 62, and slotted eye 621 is made of side by side two mounting pipes 6211; Be located between chair frame pipe 6111 and the mounting pipe 6211 with the fastening block 84 that screw 81 spins mutually, and tightly touch mutually with chair frame pipe 6111 and mounting pipe 6211; The ailhead that passes slotted eye 621 is connected to pad 83 successively, screws cap 82.

In actual use, the user can be sitting on the seat 612 of backrest vehicle seat 6 seats 61, its back can lean against on the chair back 613 of backrest vehicle seat 6 seats 61, people's bipod is pedaled forward on the pedal of foot-operated chain-wheel mechanism 4, by pedaling forward, drive the sprocket rotation of foot-operated chain-wheel mechanism 4, and sprocket wheel has driven the rotation of trailing wheel 2 by the transmission of chain, bicycle can be moved ahead, when the cyclist is pedaled forward, because the rear portion of human body is provided with backrest, backrest can produce antagonistic force to the human body both legs, and this power is approximately about 4 times of human body gravity, has increased the pedal power of cyclist to foot-operated chain-wheel mechanism 4 greatly for this reason, make human body firmly very light, climbing very saves labour; When different users need carry out fore-and-aft adjustment to backrest vehicle seat 6 because of the human body height is different, can the lax direction rotation of cap 82 along screw 81 will be screwed earlier, to screw cap 82 unscrews, make pad 83 not produce the effect of pressing to two mounting pipes 6211 of forming slotted eye 621, the securing arrangement 8 locking effect that do not recur this moment, generally be equiped with four securing arrangements 8 at backrest vehicle seat 6, four securing arrangements 8 are all unscrewed, the seat 61 of backrest vehicle seat 6 does not become tightening state with mounting 62 like this, the screw 81 of securing arrangement 8 can move in slotted eye 621, whole seat 61 can be moved forward and backward with respect to mounting 62, when user's stature is higher, can be with seat 61 to the car rear to moving, the seat 61 and the pedal distance of foot-operated chain-wheel mechanism 4 are zoomed out; When user's stature is shorter, can be with seat 61 to car the place ahead to moving, the seat 61 and the pedal distance of foot-operated chain-wheel mechanism 4 are furthered; Can adapt to different height users by adjusting travel like this; Locating postpone, will screw cap 82 again and screw, the two mounting pipes 6211 that make 83 pairs on pad form slip slotted eye 621 produce the effect of pressing, and this moment, securing arrangement 8 played the locking effect, and after four set securing arrangements 8 were all screwed, seat 61 was fixed.

Claims

1. backrest seat formula bicycle, comprise front-wheel, trailing wheel, front vehicle frame, foot-operated chain-wheel mechanism, the top of front vehicle frame is provided with rotatable handlebar, bottom and front-wheel are articulated, it is characterized in that: a link span is connected between front vehicle frame and the trailing wheel, on the link span installing one can before and after the backrest vehicle seat of displacement, foot-operated chain-wheel mechanism is installed in the front portion of link span, and the sprocket wheel axle center is positioned at the top of front-wheel wheel shaft.

2. backrest seat formula bicycle according to claim 1 is characterized in that: the rear end that joins for link span of described link span and trailing wheel becomes U type shape to connect with the rear axle fixed phase.

3. backrest seat formula bicycle according to claim 1, it is characterized in that: described backrest vehicle seat is made up of seat, mounting, the bottom of mounting connects with the link span fixed phase, the top of seat and mounting for can before and after the fixed phase of displacement connect.

4. according to claim 1 or 3 described backrest seat formula bicycles, it is characterized in that: described seat is made up of chair frame, seat, the chair back, and the chair frame is made of tubular body; Seat, the chair back are made of soft material body, panel respectively, and the soft material body is located on the panel, and connect with the panel fixed phase; Seat, the chair back are separately fixed at bottom, the top of chair frame.

5. backrest seat formula bicycle according to claim 4 is characterized in that: the fixed phase connection place of described seat, the chair back and chair frame is that screw retention links,

6. according to claim 1 or 3 described backrest seat formula bicycles, it is characterized in that: the movable fixed phase connection place of described seat and mounting is provided with securing arrangement, securing arrangement comprises screw, screws cap, pad, fastening block, the cap head of screw is fixed in the chair frame of seat, ailhead passes by the set slotted eye of mounting, and slotted eye is made of mutually side by side two tubular bodies; Be located between chair frame pipe and the mounting pipe with the fastening block that screw spins mutually, and tightly touch mutually with chair frame pipe and mounting pipe; The ailhead that passes slotted eye is connected to pad successively, screws cap.

7. backrest seat formula bicycle according to claim 1 is characterized in that: described backrest vehicle seat rear portion also articulates a rear deck seat.

8. backrest seat formula bicycle according to claim 1 is characterized in that: described front-wheel wheel footpath is less than the rear wheel rotation footpath.

9. backrest seat formula bicycle according to claim 1, it is characterized in that: described foot-operated chain-wheel mechanism also comprises the gear mechanism with many gears transmitting ratio.