CN2221546Y

CN2221546Y - Crank length adjustable drive unit

Info

Publication number: CN2221546Y
Application number: CN 95215044
Authority: CN
Inventors: 于旭光; 于健滋
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-05
Filing date: 1995-07-05
Publication date: 1996-03-06
Anticipated expiration: 2005-07-05

Abstract

The utility model relates to a crank length adjustable drive unit which is suitable for various pedal cycles. The utility model comprises foot pedal assemblies of each the left and the right foot, an eccentric guide wheel assembly, an outer sleeve of a foot pedal rod, an inner shaft of the foot pedal rod, nuts, a sliding bearing sleeve of a small rocker arm, a locking nut and a bearing of an eccentric hole; the outer sleeve of a right foot pedal rod is tightly connected with a toothed disk; the eccentric guide wheel assembly comprises an eccentric outer sleeve, an eccentric disk and a ball. The utility model has the advantages that the length of the crank is variable; the utility model can save labor as well as power; the stored energy is used for gliding and the utility model can make the various pedal cycles run quicker and quicker on a flat road; the utility model can save labor in the processes of climbing.

Description

Pin turns adjustable length actuating device

The utility model relates to bicycle, particularly the actuating device of bicycle.

At present, its purposes difference of various pedal type manual cars (comprising bicycle, three-wheel vehicle etc.), version is varied, but changes ten thousand times without leaving the original aim or stand, and its driving method all is to turn with the foot-operated pin of stepping on a regular length to drive.Its weak point is that moving velocity is slow, and grade climbing performance is poor.The method of existing raising speed obtains than strengthening muscle power by changing wheel, and that will be that province's merit is not laborsaving, the laborsaving merit of not economizing.How on the basis of existing bicycle, by ingenious design, make meticulously, the purpose that take little effort to reach, effect is big makes bicycle running more brisk, and it is more effective to do work, and is unique target that the utility model is pursued.

The purpose of this utility model provides a kind of pin and turns adjustable length actuating device.It can be widely used on all the foot-operated power of going into cars, it is ridden on flat road ride faster and faster, and is very laborsaving during climbing.

The purpose of this utility model is by providing the actuating device with following structure to realize, it comprises: left and right sides pin separately: foot-operated assembly, the eccentric guide wheel assembly, the foot-driven lever overcoat, axle in the foot-driven lever, nut, small rocker sliding bearing sleeve, jam nut, eccentric orfice bearing: an affixed gear wheel dish on the described right crus of diaphragm treadle overcoat; Described eccentric guide wheel assembly comprises eccentric overcoat, eccentric disk, a plurality of balls that are loaded between eccentric overcoat and the eccentric disk; Described foot-operated assembly is fixed on the described eccentric disk prejudicially, and its axle is by described eccentric orfice bearing, and with described foot-driven lever in axle affixed; Be bearing fit between axle and the described foot-driven lever overcoat in the described foot-driven lever; Described eccentric overcoat one end band rocking arm, described rocking arm terminal hinged by an end of described small rocker sliding bearing sleeve and described foot-driven lever overcoat, also with described jam nut tightening; Described nut is loaded on the other end port of described foot-driven lever overcoat.

For making the foot-operated nonvoluntary counter-rotating of assembly, in described eccentric guide wheel assembly, be provided with an escapement, can realize the self-locking of foot-operated assembly.

Axle moves freely in the foot-driven lever overcoat in the foot-driven lever in order to make, the power of reducing friction, and the cross section of axle slipper is oblate in the foot-driven lever.

Also be provided with a seal cover cap in the described eccentric guide wheel assembly, to prevent water inlet in the eccentric disk, to go into dirt.

In the tapped bore of described nut dust ring is housed, can be rubber ring also can be felt collar or with other can antisoiling material circle so that constantly remove the dust that axle may be brought in the described foot-driven lever.

Above-mentioned pin is turned adjustable length actuating device be loaded on bicycle axis place, flexible automatically when pin turns and is garden Zhou Yundong along with it when riding, thereby pin turns length and constantly changes.Turn with pin that to be positioned at level attitude be train spacing point, when pin turns when moving to upper half, pin turns to extend gradually to strengthen the arm of force and reaches the labour-saving purpose.Run to lower half when pin turns, when need not the application of force, pin turns then gradually and shortens, operating radius also dwindles thereupon, in order to avoid do virtual work.When riding, axle is reciprocating with respect to the foot-driven lever overcoat in the foot-driven lever, and eccentric overcoat is with respect to the outer interplanting angle swinging of foot-driven lever, and eccentric disk is with respect to the outer interplanting planet motion of foot-driven lever.

In sum, turn the fixing actuating device of length with existing pin and compare, the utlity model has following characteristics: 1. pin turns variable-length, and each pin turns at the upper half increasing arm of force and reaches laborsaving, and the lower half arm of force shortens, and accomplishes the laborsaving merit of economizing again.2. eccentric disk is to be used as control pin to turn flexible office, be again an energy-storing device, can store energy remaining effectively and act on the inertia that car body is advanced, make the performance that slides better, thereby reach the labour-saving purpose, can make the cyclist obviously feel to ride more brisk and more brisk.3 because the length that turn of pin are elongations and shortening gradually gradually in whole 360 degree operation circumference, and going round and beginning again constantly changes, thereby it has the performance and the advantage of derailleur, are equivalent to continuously variable unit.What its advantage was outstanding demonstrates: on smooth road, ride and ride faster and faster, and very laborsaving again during climbing.

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Fig. 1 is that pin turns the structure schematic front view that left foot turns in the adjustable length actuating device;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is that pin turns the structure schematic sectional view that right crus of diaphragm turns in the adjustable length actuating device;

Fig. 4 is the A-A section-drawing among Fig. 1.

With reference to Fig. 1-Fig. 4, the utility model comprises: left and right sides pin foot-operated assembly 5,15 separately, eccentric guide wheel assembly 1,11, foot-driven lever overcoat 2,12, axle 3,13 in the foot-driven lever, nut 4,14, small rocker sliding bearing sleeve 6,16, jam nut 7,17, eccentric orfice bearing 9,19; With reference to Fig. 3, an affixed gear wheel dish 20 can adopt the rivet welding method on the right crus of diaphragm treadle overcoat 12, and eccentric guide wheel assembly 11 comprises eccentric overcoat 21, eccentric disk 23, ball 18; The internal structure of eccentric guide wheel assembly 1 shown in Figure 1 is identical with the internal structure of offset assembly 11.Foot-operated assembly 5,15 adopts commercial assembly to get final product, and its center shaft is spirally connected by the interior axle 3,13 of eccentric orfice bearing 9,19 and foot-driven lever; Bearing fit between axle 3,13 and the foot-driven lever overcoat 2,12 in the foot-driven lever, in order to reduce friction, the cross section of axle 3,13 slippers makes oblateness in the foot-driven lever, as shown in Figure 4; Nut 4,14 is loaded on the port of foot-driven lever overcoat 2,12, strengthens the intensity of overcoat port, and in inside one dust ring 24 is set, and prevents that axle 3,13 is brought dust, earth in the foot-driven lever.

The eccentric guide wheel assembly also comprises a seal cover cap 22, prevents earth, and rainwater enters in the eccentric disk.

Also can comprise an escapement that can make foot-operated assembly self-locking in the eccentric guide wheel assembly, among the figure draw in the end.

With a graphic left side, right crus of diaphragm turns and is loaded on existing bicycle axis place, during with foot-operated stepping on, axle 3,13 is with respect to foot-driven lever overcoat 2 in the foot-driven lever, 12 is reciprocating, Fig. 2 is shown in dotted line the state that stretches out when the longest, and eccentric overcoat 21 is made angle swinging with respect to foot-driven lever overcoat 2,12, about 15 ° of scopes, eccentric disk 23 is made planet motion with respect to foot-driven lever overcoat 13.Because the design of eccentric guide wheel, it is flexible that it both had been used for that control pin turns, and is equivalent to an energy-storing device again, and sliding performance is improved, and makes the cyclist obviously feel laborsaving.

In sum, the utlity model has practicality and creativeness, can make existing bicycle that a bigger improvement is arranged, improve the efficient of riding, is a novel creation in fact.

Claims

1, a kind of pin turns adjustable length actuating device, it comprises: left and right sides pin foot-operated assembly separately is characterized in that it comprises that also left and right sides pin separately: axle, nut, small rocker sliding bearing sleeve, jam nut, eccentric orfice bearing in eccentric guide wheel assembly, foot-driven lever overcoat, the foot-driven lever; An affixed gear wheel dish on the described right crus of diaphragm treadle overcoat; Described eccentric guide wheel assembly comprises eccentric overcoat, eccentric disk, a plurality of balls that are loaded between eccentric overcoat and the eccentric disk; Described foot-operated assembly is fixed on the described eccentric disk prejudicially, and it is by being positioned at described eccentric orfice bearing on the described eccentric disk and affixed with described foot-driven lever axle; Be bearing fit between axle and the described foot-driven lever overcoat in the described foot-driven lever; Described eccentric overcoat one end band rocking arm, described rocking arm terminal hinged by an end of described small rocker sliding bearing sleeve and described foot-driven lever overcoat, also with described jam nut tightening; Described nut is loaded on the other end port of described foot-driven lever overcoat.

2, pin according to claim 1 turns adjustable length actuating device, it is characterized in that comprising in the described eccentric guide wheel assembly escapement that can make foot-operated assembly self-locking.

3, pin according to claim 1 turns adjustable length actuating device, it is characterized in that the cross section of axle slipper in the described foot-driven lever is oblate.

4, pin according to claim 1 turns adjustable length actuating device, it is characterized in that being provided with a seal cover cap in the described eccentric guide wheel assembly.

5, pin according to claim 1 turns adjustable length actuating device, it is characterized in that in the tapped bore of described nut dust ring being housed, and described dust ring can be rubber ring or felt collar, or with other can antisoiling material circle.