CN2123495U

CN2123495U - Double linkage rod power saving bicycle

Info

Publication number: CN2123495U
Application number: CN 92203831
Authority: CN
Inventors: 何耀群
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-04
Filing date: 1992-03-04
Publication date: 1992-12-02

Abstract

The utility model relates to a bicycle (tricycle and bicycle) driven by a guide rod mechanism. The rear part of a middle shaft of the existing bicycle is additionally provided with a pair of middle shafts which are used as the oscillation centers of guide rods; the right and left sides of each additional middle shafts are respectively provided with a pair of oscillation guide rods driven by a pedal crank. At the time of riding, two pairs of guide rods alternately have functions; the driving torque of the pedal crank can be magnified from 1.06 times to 2.62 times within the range of 60 DEG in the front of an upper and a lower vertical positions; thus, under the premise that speed is not lowered, labour is saved at the time of grade climbing, load and fast riding. The utility model has the advantages of simple structure and low manufacture cost.

Description

Double linkage rod power saving bicycle

The utility model is a kind of bicycle (three-wheel vehicle and bicycle) that drives with guide-bar mechanism.

Existing bicycle in the semicircumference that pedal drives forwards, the moment irrational distribution of each point, crank during near upper and lower upright position drive torque too small so that effort in climbing, load-carrying and when riding fast.Existing variable speed bicycle is that the moment of each point is amplified several times simultaneously, and meanwhile speed reduces several times, does not change the unreasonable situation of moment distribution, and the laborsaving of it is cost with the deceleration.And structure is complicated, and cost is higher.

The purpose of this utility model provides a kind of under the prerequisite that does not underspeed, climbing, load-carrying and laborsaving, simple in structure when riding fast, the bicycle that cost is low.

The purpose of this utility model is achieved in that axis after the rear of existing bicycle axis increases single raise again, is center of oscillation with the back axis that increases, and at it pendulum guide rod that pair is driven by the pedal crank is installed each side.Simultaneously hinge wheel is moved to the back axis, two secondary pendulum guide rod alternating actions when riding amplify the drive torque of crank near upper and lower upright position the time.Do not play inhibition when making the pendulum guide rod backswing, guarantee forward wobble drive wheel, on the guide rod that swings, ratchet is housed, the ratchet that cooperates with it is housed in the both sides of back axis.

The theoretical analysis, the utility model can amplify 1.06 times to 2.62 times at the drive torque in 60 ° of scopes in the place ahead, upright position up and down with crank, and amplification multiple is big more on the more little point of existing bicycle drive torque, thereby the labor-saving effect is tangible.The trial-production of embodiment (stating as follows) has proved this effect qualitatively.The utility model just adds the simple mechanism of a cover on existing bicycle, thereby easy to manufacture, and cost is low.

The utility model has kept existing bicycle rotary crank and chain-drive advantage.

Accompanying drawing is represented an embodiment of the present utility model (being used for three-wheel vehicle).

Fig. 1: two guide rod force-saving tricycle assembling scheme drawings (overlooking).

1-hinge wheel (1); 2-push rod (2); 3-pendulum guide rod (2); 4-leading portion crank (2); 5-back segment crank (2); 6-ratchet (2); 7-joint plate (2); 8-ratchet (2).

Fig. 2: the local enlarged diagram (analysing and observe) of two guide rod force-saving tricycles.

9-chamfered edge pin; The 10-torsion spring; The 11-extension spring; The 12-fork; The 13-Roller Shaft; The 14-roller; 15-steel wire ring.

Fig. 3: two guide rod force-saving tricycle A-A section-drawings (slice location is seen Fig. 2).

Fig. 4: two guide rod force-saving tricycle B-B section-drawings (slice location is seen Fig. 1).

The center of oscillation of a secondary axis as pendulum guide rod installed at rear at existing three-wheel vehicle axis again.The structure on axis the right is: hinge wheel (1) is riveted into one with ratchet (6), is fastened on the axis of back (seeing Fig. 2 and Fig. 3) with chamfered edge pin (9) then.Gusset piece (7) fuses with screw with pendulum guide rod (3), and the hole sky on the gusset piece (7) is enclosed within on the face of cylinder of ratchet (6) end.The foot-operated crank of existing three-wheel vehicle is cut in two, change system into leading portion crank (4) and back segment crank (5), one end of every section crank is respectively with chamfered edge pin (9) fastening with Roller Shaft (13) (its connecting mode and shown in Figure 3 identical), and guarantees two sections vertical in-lines of crank.There is roller (14) at the middle part of Roller Shaft (13), roller (14) (see figure 4) of rolling in the chute of pendulum guide rod (3).Steel wire ring (15) sky is enclosed within the circular groove at roller (14) middle part, and steel wire ring (15) links to each other with push rod (2) with the way of curved riveting again.The other end of two sections cranks the same with existing three-wheel vehicle respectively with original axis and the pedal (see figure 1) that links.Crank (4, when 5) rotating backward, push rod (2) promotes fork (12), and fork (12) levers up ratchet (8) by extension spring (11) again, thereby ratchet (8) breaks away from ratchet (6), has so just guaranteed carrying out smoothly of reversing (wheel reversing) and carriage return (crank counter-rotating).Crank (4,5) is when rotating forward, and push rod (2) breaks away from fork (12), and torsion spring (10) makes reset flank engagement with ratchet (6) of ratchet (8), thereby promotes ratchet (6) and hinge wheel (1) rotation.Hinge wheel (1) drives the minor sprocket that is fastened on the three-wheel vehicle hind axle by chain, advances thereby promote three-wheel vehicle.

The structure on the axis left side is identical with the right basically, and hinge wheel and chain just are not installed.

The utility model is simple in structure, low cost of manufacture, and the labor-saving effect is obvious.

Claims

The two guide rod labor-saving bicycles that are used to ride, include vehicle frame, wheel, pedal transmission mechanism is partly formed, it is characterized in that: axis is as the center of oscillation of guide rod after the rear of foot-operated axis increases single raise, at the back axis that increases the pendulum guide rod that one pair is driven by the pedal crank is installed each side, hinge wheel in the pedal transmission mechanism moves to the back axis, and on the guide rod that swings ratchet is housed, and in axis both sides, back the ratchet that cooperates with it is housed.