CN217348111U - Novel labor-saving stepless speed change bicycle - Google Patents

Abstract

The utility model provides a novel labor-saving stepless speed change bicycle, which comprises a frame, a front frame and a rear frame, wherein the front frame and the rear frame are fixed at two ends of the frame; the equal fixed mounting in frame left and right sides has the low-angle to trample drive assembly, the low-angle is trampled drive assembly and is included crank throw, traction part and flywheel, and the crank throw is connected with the flywheel through traction part, and two low-angles of frame both sides trample drive assembly and are connected through connecting portion, one side of link is connected with supplementary pendulum rod through the pivot. The utility model discloses can obtain as big as possible power moment of torsion under the effect of people's weight and drive the bicycle more powerful constantly go forward, two crank slewing speed and frequency among the integrated device are high, then the gyration contained angle that two cranks constitute can be at will by the control that the people of riding as required in 140 degrees.

Description

Novel labor-saving stepless speed change bicycle

Technical Field

The utility model relates to the technical field of bicycles, in particular to novel laborsaving infinitely variable bicycle.

Background

Bicycles, also known as bicycles or bicycles, are typically two-wheeled small land vehicles. After a person rides the vehicle, the person steps on the pedal as power, and the vehicle is a green and environment-friendly vehicle. More and more people use bicycles as fitness equipment for riding exercise and bicycle touring. Bicycle components can be broadly divided into a steering system, a drive system, and a brake system according to their operating characteristics.

However, the bicycle riders on the existing road step on the pedals by two feet and respectively do reciprocating motion with the circular motion; the bicycle is driven by the chain through the middle chain wheel to move forward. There is a disadvantage in riding: one foot always does a large half circle of useless work, and the action amplitude of the legs and the feet is extremely large; particularly, the riding difficulty is more obvious when the bicycle is windward, uphill and heavy load.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiments of the present invention are intended to provide a novel labor-saving stepless speed change bicycle, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a useful choice.

The embodiment of the utility model provides a technical scheme is so realized: the bicycle comprises a bicycle frame, a front bicycle frame and a rear bicycle frame, wherein the front bicycle frame and the rear bicycle frame are fixed at two ends of the bicycle frame; the both sides welding of back frame has the link of fork type structure, and preceding frame is fixed with the guide arm respectively with the relative one side of back frame, and the tip of two guide arms welds each other with top one side of link respectively, and the top of one of them guide arm is provided with the cushion, the equal fixed mounting in the frame left and right sides has the small-angle to trample drive assembly, the small-angle is trampled drive assembly and is included crank, traction part and flywheel, and crank is connected with the flywheel through traction part, and two small-angles of frame both sides are trampled drive assembly and are connected through connecting portion, one side of link is connected with supplementary pendulum rod through the pivot, and the one end of supplementary pendulum rod is passed through the haulage rope and is articulated with the guide arm.

In some embodiments, the crank comprises a swing rod and a crank which are distributed at an included angle of ninety degrees, the connection point of the swing rod and the crank is welded and fixed, one end of the crank is inserted with a pedal, the other end of the crank is rotatably connected to the end of the middle shaft, and one end of the swing rod is rotatably connected with a movable pulley through a movable pulley connecting shaft.

In some embodiments, the connecting portion comprises a guide disc fixing seat fixed at one end of the connecting frame and a guide disc fixed at the bottom end of the guide disc fixing seat, and a fixed pulley is rotatably connected in the guide disc; the outer wall of the connecting frame is welded with a fixed cylinder, and the inner wall of the fixed cylinder is rotatably connected with a middle shaft.

In some embodiments, the traction part comprises two steel wire ropes and chains with different lengths, and the chains are meshed with the flywheel; the two ends of the short steel wire rope are respectively fixedly connected with the auxiliary swing rod and the chains, the long steel wire rope is connected with the two chains on the left side and the right side of the frame, the short steel wire rope is wound on the outer wall of the movable pulley, and the long steel wire rope is wound on the outer wall of the fixed pulley.

In some embodiments, the traction part comprises a cable drum fixed on one side of the flywheel through a fixing screw and a steel cable, one end of the steel cable is fixed on the end of an auxiliary swing rod on the left side of the frame and sequentially wound on a movable pulley on the left side of the frame, the cable drum on the left side of the frame, a fixed pulley, a cable drum on the right side of the frame, a movable pulley on the right side of the frame and an auxiliary swing rod on the right side of the frame.

In some embodiments, the movable pulley connecting shaft is replaced by a movable pulley adjusting member, the movable pulley adjusting member comprises a rotating plate and an adjusting button connected to the side wall of the rotating plate through threads, the rotating plate is fixed at the top of the swing rod through the adjusting button, and the movable pulley is rotatably connected to the upper part of the rotating plate.

In some embodiments, the bicycle further comprises a speed regulating part fixed at the front end of the bicycle frame and a speed changing fork fixed at one end of the auxiliary swing rod, and the regulating part is connected with one end of the speed changing fork through a speed changing pull wire.

In some embodiments, the regulating part is including being fixed in the mount pad of frame front end, and one side outer wall of mount pad opens there is the ring channel, and open on one side of the ring channel has rotatory hole, the inner wall in rotatory hole rotates and is connected with the rotary disk, the rotary disk centre of a circle department has the deflector roll through the thread tightening, and the variable speed is acted as go-between and is fixed in the one end of deflector roll, mount pad top one side outer wall welding has the equidistant respectively latch, and the positive one side outer wall of rotary disk has the variable speed hand to dial through the bolt fastening, and one side sliding connection that the variable speed hand was dialled in the ring channel, the variable speed hand is dialled and is opened jaggedly on one side of being close to the latch, and breach and latch looks adaptation.

In some embodiments, the adjusting portion comprises a handle replacing the handle, one side of the handle is rotatably connected with an adjusting frustum through a rotating shaft, an indicating disc is fixed on the outer wall of one side of the adjusting frustum through a bolt, one side of the indicating disc is rotatably connected with a rotary hand dial, the variable speed stay wire is wound in the rotary hand dial, and one end of the rotary hand dial is connected with one end of the adjusting frustum through a thread.

The embodiment of the utility model provides a owing to adopt above technical scheme, it has following advantage:

1. the novel labor-saving stepless speed change bicycle has the advantages that the whole device can ensure that the bicycle can continuously move forwards only by the random up-and-down reciprocating motion of the amplitude and the frequency of the feet of a rider; without doing circular motion occupying a large motion space.

2. In the novel labor-saving stepless speed change bicycle, two front cranks of the bicycle swing all the time (discussed by taking horizontal placement as a reference) within a 140-degree included angle formed by 70 degrees upwards and 70 degrees downwards to move randomly, and as a result: the bicycle is driven to move forwards more powerfully and continuously by obtaining the largest possible power torque under the action of the weight of a person, the rotating speed and the frequency of the two cranks in the whole device are high, the rotating included angle formed by the two cranks can be controlled at will by a rider within 140 degrees according to the requirements, particularly, when the rider suddenly encounters an uphill or a windward and passes through the road conditions of a ditch sill, the rider can quickly adjust the pedal to quickly and repeatedly step on the small included angle of the two cranks by the two feet (the included angle formed by the movement of the cranks is smaller, the obtained torque is larger), and therefore the best driving force is obtained, and the bicycle is far superior to the effect that the original bicycle rider can do large-circle and whole-cycle movement by the two feet of the bicycle rider.

3. When the speed is slow, a rider can adjust the treading frequency and force of the left foot and the right foot of the rider in time to adjust the body gravity center so as to control and prevent the bicycle from inclining left and right, the riding safety and stability are greatly improved, and the novel labor-saving stepless speed change bicycle is widely applicable to people with different heights on the same bicycle; particularly, for the crowd with light weight and short stature, the feet of the crowd can be kept to be treaded up and down in the range of the included angle of 140 degrees formed by the two cranks within the selected included angle of the pedals all the time, so that the embarrassment and instability caused by the short legs not reaching the pedals can be avoided.

4. This novel laborsaving infinitely variable bicycle through single wire rope winding on the winding displacement cylinder to drive the flywheel drive of its one side, thereby lean on same wire rope to do the power transmission of whole car, removed well chain wheel and chain, effectively reduced the cost of integrated device, make overall structure simple, and the operation is reliable.

5. This novel laborsaving infinitely variable bicycle makes the rotor plate rotation degree through the rotation adjusting knob to effectively changed the distance between movable pulley and the axis, realized the function of two fast sections of high-low speed from this, be the low-speed when the movable pulley is close to the axis, otherwise be high-speed, from this, played the regulating action to the bicycle speed of marcing.

6. This novel laborsaving infinitely variable bicycle makes the rotary disk rotate through stirring the variable speed hand to effectively having spurted wire rope's one end and twined on the deflector roll of rotary disk, and then having played the inclination that drives the variable speed shift fork change backup pad with wire rope's the other end, from this, having dialled the synchronous displacement of the both ends head of same root wire rope through the variable speed hand and just realized the infinitely variable speed that the bicycle was ridden.

7. This novel laborsaving infinitely variable bicycle makes the guide disc rotatory through the rotation regulation frustum, and then lets the guide disc inner roll act as go-between the winding with the variable speed to play the effect of adjusting wire rope, and then effectively realize the infinitely variable in the bicycle rides.

8. This novel laborsaving infinitely variable bicycle, whole device rely on same root wire rope constantly to be reciprocating motion at the operation throughout and transmit power, so have: low cost, simple structure, reliable operation, light riding, labor saving, high efficiency, low noise and convenient use and maintenance.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of the structure provided in embodiment 1;

FIG. 2 is a schematic view showing a structure of a small-angle stepping driving assembly in accordance with embodiment 1;

FIG. 3 is a bottom view of the low angle pedal drive assembly of example 1;

FIG. 4 is an enlarged view of the structure of portion A in FIG. 3;

FIG. 5 is a schematic view showing an installation structure of a wire arranging roller according to embodiment 2;

FIG. 6 is a schematic view showing an installation structure of a rotating plate in embodiment 3;

FIG. 7 is a schematic structural view of a continuously variable transmission according to embodiment 4;

fig. 8 is a schematic structural view of the continuously variable transmission in embodiment 5.

Reference numerals:

1-front wheel, 2-front frame, 3-handle, 4-frame, 5-cushion, 6-brake, 7-rear wheel, 8-connecting frame, 9-small angle trample driving component, 10-pedal, 11-guide disc fixing seat, 12-crank, 13-swing bar, 14-chain, 15-flywheel, 16-steel wire rope, 17-movable pulley, 18-guide disc, 19-fixed pulley, 20-fixed cylinder, 21-middle shaft, 22-auxiliary swing bar, 23-line arranging roller, 24-fixed screw, 25-rotating plate, 26-adjusting button, 27-mounting seat, 28-rotating disc, 29-annular groove, 30-latch, 31-speed change hand dial, 32-round holding disc, etc, 33-a speed change fork, 34-a rotary hand dial, 35-an indicating disc, 36-an adjusting cone table and 37-a handle.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

A novel labor-saving stepless speed change bicycle comprises a frame 4, a front frame 2 and a rear frame, wherein the front frame 2 and the rear frame are fixed at two ends of the frame 4, one side of the frame 4, which is close to the front frame 2, is provided with two handles 3, two ends of the front frame 2 and the rear frame are respectively connected with a front wheel 1 and a rear wheel 7 through steel shafts, one side of each of the two handles 3 is connected with a brake 6 through a brake rope, and the two brakes 6 are respectively arranged at one sides of the front frame 2 and the rear frame, which are close to the front wheel 1 and the rear wheel 7; the welding of the both sides of back frame has the link 8 of fork type structure, and preceding frame 2 is fixed with the guide arm respectively with the relative one side of back frame, and the tip of two guide arms welds each other with link 8 top one side respectively, and the top of one of them guide arm is provided with cushion 5.

Example 1:

as shown in figures 1-4, a novel labor-saving stepless speed change bicycle aims at solving the problem that one foot always does large half circle of useless work, and the action range of the legs and the feet is extremely large, the bicycle also comprises two small-angle treading driving components 9 which are arranged at the left side and the right side of the frame 4, the small-angle treading driving components 9 can be flexibly assembled on any bicycle body to replace the existing chain 14 driving mechanism in the market, the small-angle treading driving component 9 comprises a crank, a traction part and a flywheel 15, the crank is connected with the flywheel 15 through the traction part, and two small-angle tread drive assembly 9 of frame 4 both sides are connected through connecting portion, realize continuously driving the bicycle and advance, and traction portion can use the mode drive of wire rope combination chain 14, also can adopt single wire rope's mode drive, and in this embodiment, the preferred is: the traction part comprises two steel wire ropes 16 and chains 14 with different lengths, the chains 14 are meshed with the flywheel 15, and the flywheel 15 can realize one-way meshing with the driving of the rear wheel 7;

in order to enable the crank to stably rotate within a certain range, one side of the connecting frame 8 is connected with an auxiliary swing rod 22 through a rotating shaft, one end of the auxiliary swing rod 22 is hinged with the guide rod through a traction rope, and the stroke of the crank is effectively limited through the cooperation of the traction rope and the auxiliary swing rod 22; two ends of the short steel wire rope 16 are respectively fixedly connected with the auxiliary swing rod 22 and the chains 14, and the long steel wire rope 16 is connected with the two chains 14 on the left side and the right side of the frame 4;

the crank throw comprises a swing rod 13 and a crank 12 which are distributed at an included angle of ninety degrees, the connection point of the swing rod 13 and the crank 12 is welded and fixed, a pedal plate 10 is inserted at one end of the crank 12, one end of the swing rod 13 is rotatably connected with a movable pulley 17 through a movable pulley connection shaft, a short steel wire rope 16 is wound on the outer wall of the movable pulley 17, and the crank 12 can do reciprocating motion at any angle within a movement included angle of 140 degrees formed by the crank 12, so that a rider can more favorably ride in the most appropriate angle area (the crank 12 has the longest moment at the horizontal position and the largest obtained torsion) to obtain the advancing power of the bicycle as much as possible by pedaling the most quickly.

In order to realize the steering of the steel wire rope 16, the chains 14 on two sides of the vehicle are connected together, in the embodiment, the connecting part comprises a guide disc fixing seat 11 fixed at one end of the connecting frame 8 and a guide disc 18 fixed at the bottom end of the guide disc fixing seat 11, a fixed pulley 19 is rotatably connected in the guide disc 18, the long steel wire rope 16 is wound on the outer wall of the fixed pulley 19, the steel wire rope 16 and the chains 14 in the traction part are connected into a whole through the steering action of the fixed pulley 19 and the matching of the fixed pulley 17, and therefore the driving effect of the rear wheel 7 is completed through the one-way meshing of the flywheel 15.

In this embodiment, the connecting portion further includes a fixed cylinder 20 fixed on the outer wall of the connecting frame 8, the inner wall of the fixed cylinder 20 is rotatably connected with a middle shaft 21, and the cranks 12 on the two sides of the frame 4 are respectively rotatably connected to the two ends of the middle shaft 21, so as to realize the up-and-down alternate operation of the left and right pedals 10.

The embodiment is as follows:

s1: the two feet of a bicycle rider are arranged in front at the same time and respectively step on the left pedal and the right pedal; when the left foot descends, the movable pulley 17 on the swing rod 13 of the crank drives the dragging steel wire rope to extend forwards, and simultaneously, the flywheel 15 on one side of the steel wire rope 16 on the left side of the rear wheel 7 is dragged to drive the rear wheel 7 to rotate forwards;

s2: meanwhile, the same steel wire rope pulls the flywheel 15 on one side of the steel wire rope 16 on the right side of the rear wheel 7 to rotate freely backwards through the rotary fixed pulley 19 of the bicycle; then the right foot pedal is pulled upwards through the steel wire rope 16 to finish the preparation for the next right foot acting;

s3: the bicycle rider with front two feet steps on the front part of the bicycle always in the front half cycle of doing work, so that the bicycle obtains the maximum forward driving force as much as possible;

s4: because the two cranks 12 at the front of the whole structure can do reciprocating motion with any angle within the motion included angle of 1400 formed by the cranks, the bicycle is more beneficial to obtain the advancing power of the bicycle as much as possible with the treading frequency as fast as possible in the most appropriate angle area.

The embodiment enables the two feet of the rider to do reciprocating motion with amplitude and frequency as desired so as to lead the bicycle to move forward continuously; instead of circular motion occupying a large motion space;

and wherein the two cranks 12 of the bicycle are always (discussed with reference to the horizontal position) swung with a desired motion within an angle of 140 degrees formed by 70 degrees upwards and 70 degrees downwards, as a result of which: the bicycle can be driven to move forwards continuously by obtaining the power torque as large as possible under the action of the body weight of a person; in this embodiment, the rotation speed and frequency of the two cranks 12 are high, and the rotation included angle formed by the two cranks 12 can be freely controlled by the rider within 140 degrees as required.

Particularly, when the rider suddenly encounters an uphill or a windward and passes through a road condition with a ditch sill, the rider can quickly adjust the rapid reciprocating treading of the two feet to the small included angle of the two cranks 12 (the included angle formed by the movement of the cranks 12 is smaller, the obtained moment is larger), and therefore the best driving force is obtained. The bicycle is far better than the effect that the original bicycle rider uses the feet of the bicycle to do large-circle and complete-cycle movement.

There are also significant advantages: when the speed of a motor vehicle is very slow, the people of riding can in time adjust the frequency of trampling and the dynamics of its left and right feet and adjust the health focus to control and prevent the left and right slope of bicycle, this greatly increased the security and the stability of riding.

The bicycle can be suitable for the same bicycle for more people with different heights; particularly, for the crowd with light weight and short stature, the feet of the crowd can be kept to be treaded up and down in the range of the included angle of 140 degrees formed by the two cranks 12 within the selected included angle of the pedals all the time, so that the embarrassment and instability caused by the short legs not reaching the pedals can be avoided.

Example 2:

a novel labor-saving stepless speed change bicycle, which is modified from embodiment 1 in the following manner, as shown in fig. 1 and 5, the traction portion includes a cable arranging roller 23 and a steel cable 16 fixed on one side of a flywheel 15 by a fixing screw 24, one end of the steel cable 16 is fixed on the end of an auxiliary swing rod 22 on the left side of a frame 4 and is sequentially wound on a movable pulley 17 on the left side of the frame 4, a cable arranging roller 23 on the left side of the frame 4, a fixed pulley 19, a cable arranging roller 23 on the right side of the frame 4, a movable pulley 17 on the right side of the frame 4, and an auxiliary swing rod 22 on the right side of the frame 4; a steel wire rope 16 is used for removing a chain wheel and a chain 14 on the original bicycle, and a wire arrangement roller 23 of the steel wire rope 16 is matched with a flywheel 15 (in a one-way meshing state) to drive a rear wheel to rotate forwards;

the working principle of the present embodiment is the same as that of embodiment 1, but the present embodiment always depends on the same traction steel wire rope 16 to do reciprocating motion to transmit power during operation, so the following: low cost, simple structure, reliable operation, light riding, labor saving, high efficiency, low noise and convenient use and maintenance.

Example 3:

in order to realize the high-low speed change of the bicycle, the present embodiment is modified based on embodiments 1 and 2, as shown in fig. 6, the movable pulley connecting shaft is replaced by a movable pulley adjusting member, the movable pulley adjusting member includes a rotating plate 25 and an adjusting knob 26 connected to the side wall of the rotating plate 25 through a thread, the rotating plate 25 is fixed on the top of the swing link 13 through the adjusting knob 26, and the movable pulley 17 is rotatably connected to the upper part of the rotating plate 25; the rotating plate 25 can be loosened by loosening the adjusting knob 26, and the rotating plate 25 can be rotated 180 degrees forward (counterclockwise) ⁰ Namely, the upper part and the lower part of the movable pulley 17 can change the rotating radius of the swing rod 13, thereby realizing the high-low speed change of the bicycle.

Example 4:

a novel labor-saving stepless speed change bicycle comprises a speed regulation part fixed at the front end of a frame 4 and a speed change shifting fork 33 fixed at one end of an auxiliary swing rod 22, wherein the regulation part is connected with one end of the speed change shifting fork 33 through a speed change pull wire, the regulation part comprises a mounting seat 27 fixed at the front end of the frame 4, an annular groove 29 is formed in the outer wall of one side of the mounting seat 27, a rotary hole is formed in one side of the annular groove 29, the inner wall of the rotary hole is rotatably connected with a rotary disk 28, a guide roller is fixed at the circle center of the rotary disk 28 through threads, the speed change pull wire is fixed at one end of the guide roller through a releasable damping piece, clamping teeth 30 which are respectively arranged at equal intervals are welded on the outer wall of one side of the top of the mounting seat 27, and a speed change hand dial 31 is fixed on the outer wall of one side of the front surface of the rotary disk 28 through bolts, and one side of the variable speed hand dial 31 is connected in the annular groove 29 in a sliding manner, one side of the variable speed hand dial 31 close to the latch 30 is provided with a notch, the notch is matched with the latch 30, and the outer wall of the top of the variable speed hand dial 31 is fixed with a circular holding disc 32 through threads.

The speed-changing shifting fork 33 takes the shaft seat on the auxiliary swing rod 22 as the center of a circle, and under the action of the speed-changing hand lever 31, the speed-changing shifting fork 33 rotates in a following manner through a speed-changing stay wire; two ends of the steel wire rope 16 for bicycle transmission are respectively connected and fixed with two end points of the auxiliary swing rod 22 on the speed-changing shifting fork 33, namely: the fixed points of the ends of the two steel wire ropes 16 can synchronously displace along with the rotation of the speed-changing shifting fork 33; when the speed change hand dial 31 controls the pull wire to enable the rope end fixing point on the speed change fork 33 to be at the forefront, the speed of the vehicle is lowest; the rope end fixing point moves backwards along with the continuous anticlockwise rotation of the speed changing shifting fork 33, and the process is a process of changing the speed of the vehicle from low to high; when the fixed point of the end of the traction rope stays and is positioned at any point in the travel track of the traction rope, the speed at the moment is the instant speed of the bicycle; therefore, the stepless speed change is realized by obtaining a plurality of arbitrary vehicle speeds; the steel wire rope 16 is closer to being folded along with the constant backward movement of the fixed point of the transmission traction steel wire rope 16; when the fixed point moves to the final position, the speed of the vehicle reaches the highest speed at the moment, because the travel distance of the traction movable pulley 17 on the swing rod 13 is 2 times of the length change of the traction steel wire rope 16; the bicycle can obtain a speed change area of 1: 1-1: 1.8 times;

example 5:

a novel labor-saving stepless speed change bicycle is improved on the basis of embodiment 4, as shown in fig. 8, an adjusting part comprises a handle 37 replacing a grip 3, one side of the handle 37 is rotatably connected with an adjusting frustum 36 through a rotating shaft, the outer wall of one side of the adjusting frustum 36 is fixedly provided with an indicating disc 35 through a bolt, one side of the indicating disc 35 is rotatably connected with a rotary hand dial 34, a speed change pull wire is wound in the rotary hand dial 34 through a releasable damping piece, and one end of the rotary hand dial 34 is connected with one end of the adjusting frustum 36 through a thread; the damping application method of the releasable damping part can be various, the positioning and buffering effects are achieved, and the positioning friction force of the hand-operated fork is larger than the free movement capacity of the speed-changing shifting fork (during riding); the rotary hand dial 34 is rotated by rotating the adjusting cone 36, so that the variable speed stay wire is wound by the inner roller of the guide disc 18, the function of adjusting the steel wire rope 16 is achieved, and the hand dial or the rotary dial can be fixed at any position through the releasable damping piece, so that the stepless speed change in the bicycle riding process is effectively realized; the embodiment realizes the adaptation of the traction part to the traditional bicycle, realizes the flexibility of device installation, and increases the application range of stepless speed change.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A novel labor-saving stepless speed change bicycle comprises a frame (4), a front frame (2) and a rear frame, wherein the front frame (2) and the rear frame are fixed at two ends of the frame (4), two handles (3) are arranged at one side of the frame (4) close to the front frame (2), two ends of the front frame (2) and the rear frame are respectively connected with a front wheel (1) and a rear wheel (7) through steel shafts, one sides of the two handles (3) are connected with brakes (6) through brake ropes, and the two brakes (6) are respectively arranged at one sides of the front frame (2) and the rear frame close to the front wheel (1) and the rear wheel (7); the both sides welding of back frame has link (8) of fork type structure, and preceding frame (2) and the relative one side of back frame are fixed with the guide arm respectively, and the tip of two guide arms welds each other with top one side of link (8) respectively, and the top of one of them guide arm is provided with cushion (5), its characterized in that: the equal fixed mounting in frame (4) left and right sides has the low-angle to trample drive assembly (9), the low-angle is trampled drive assembly (9) and is included crank, traction part and flywheel (15), and the crank is connected with flywheel (15) through traction part, and two low-angles of frame (4) both sides are trampled drive assembly (9) and are connected through connecting portion, one side of link (8) is connected with supplementary pendulum rod (22) through the pivot, and the one end of supplementary pendulum rod (22) is passed through the haulage rope and is articulated with the guide arm.

2. The power saving stepless speed change bicycle as claimed in claim 1, wherein: the crank throw comprises a swing rod (13) and a crank (12) which are distributed at an included angle of ninety degrees, the swing rod (13) is welded and fixed with the crank (12) at a connecting point, a pedal (10) is inserted into one end of the crank (12), the other end of the crank (12) is rotatably connected to the end of a middle shaft (21), and one end of the swing rod (13) is rotatably connected with a movable pulley (17) through a movable pulley connecting shaft.

3. The power saving stepless speed change bicycle as claimed in claim 2, wherein: the connecting part comprises a guide disc fixing seat (11) fixed at one end of the connecting frame (8) and a guide disc (18) fixed at the bottom end of the guide disc fixing seat (11), and a fixed pulley (19) is rotatably connected in the guide disc (18); a fixed cylinder (20) is welded on the outer wall of the connecting frame (8), and the inner wall of the fixed cylinder (20) is rotatably connected with a middle shaft (21).

4. A novel labor-saving stepless speed change bicycle as claimed in claim 3, wherein: the traction part comprises two steel wire ropes (16) with different lengths and a chain (14), and the chain (14) is meshed with the flywheel (15); two ends of a short steel wire rope (16) are respectively fixedly connected with the auxiliary swing rod (22) and the chains (14), a long steel wire rope (16) is connected with the two chains (14) on the left side and the right side of the frame (4), the short steel wire rope (16) is wound on the outer wall of the movable pulley (17), and the long steel wire rope (16) is wound on the outer wall of the fixed pulley (19).

5. A novel labor-saving stepless speed change bicycle as claimed in claim 3, wherein: the traction part comprises a wire arranging roller (23) and a steel wire rope (16) which are fixed on one side of the flywheel (15) through a fixing screw (24), one end of the steel wire rope (16) is fixed on the end part of an auxiliary swing rod (22) on the left side of the frame (4) and sequentially wound on a movable pulley (17) on the left side of the frame (4), the wire arranging roller (23) on the left side of the frame (4), a fixed pulley (19), the wire arranging roller (23) on the right side of the frame (4), a movable pulley (17) on the right side of the frame (4) and the auxiliary swing rod (22) on the right side of the frame (4).

6. A novel labor-saving stepless speed change bicycle according to claim 2, characterized in that: the movable pulley connecting shaft is replaced by a movable pulley adjusting part, the movable pulley adjusting part comprises a rotating plate (25) and an adjusting button (26) connected to the side wall of the rotating plate (25) through threads, the rotating plate (25) is fixed to the top of the swing rod (13) through the adjusting button (26), and the movable pulley (17) is rotatably connected to the upper portion of the rotating plate (25).

7. A novel labor-saving stepless speed change bicycle as claimed in any one of claims 1 to 6, wherein: the bicycle further comprises a speed regulating part fixed at the front end of the bicycle frame (4) and a speed changing shifting fork (33) fixed at one end of the auxiliary swing rod (22), and the regulating part is connected with one end of the speed changing shifting fork (33) through a speed changing pull wire.

8. The power saving stepless speed change bicycle as claimed in claim 7, wherein: adjusting part is including mount pad (27) that are fixed in frame (4) front end, and one side outer wall of mount pad (27) is opened there is ring channel (29), and ring channel (29) one side is opened there is the rotatory hole, the inner wall in rotatory hole rotates and is connected with rotary disk (28), rotary disk (28) centre of a circle department has the deflector roll through the thread tightening, and the variable speed is acted as go-between and is fixed in the one end of deflector roll, mount pad (27) top one side outer wall welding has latch (30) that the equidistance is respectively, and rotary disk (28) openly one side outer wall has variable speed hand to dial (31) through the bolt fastening, and one side sliding connection that variable speed hand dialled (31) is in ring channel (29), variable speed hand is dialled (31) and is close to latch (30) one side and is opened jaggedly, and breach and latch (30) looks adaptation.

9. The power saving stepless speed change bicycle as claimed in claim 7, wherein: the regulation portion is including handle (37) that replace handle (3), and one side of handle (37) is connected with through the rotation axis rotation and adjusts frustum (36), and the one side outer wall of adjusting frustum (36) has indicator disc (35) through the bolt fastening, and one side of indicator disc (35) rotates and is connected with rotatory hand and dial (34), and the winding of acting as go-between is in rotatory hand is dialled (34) to the variable speed, and the one end of rotatory hand dialling (34) is connected with regulation frustum (36) one end through the screw thread.

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