CN213735394U

CN213735394U - Chainless bicycle and driving device thereof

Info

Publication number: CN213735394U
Application number: CN202023019920.8U
Authority: CN
Inventors: 汤运庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-07-20
Anticipated expiration: 2030-12-15

Abstract

The utility model provides a chainless bicycle, which comprises a handlebar, a frame, a front wheel and a rear wheel, wherein the front part of the frame is connected with the front wheel through a pivot, and the rear part of the frame is connected with a driving device; the driving device comprises a pedal lever, a chain connecting rod, a driving wheel, a first driven wheel, a second driven wheel, a hub, a flywheel and a main rotating shaft; the first driven wheel and the second driven wheel are coaxial, the driving wheel and the second driven wheel are bearing discs with bearings uniformly arranged on the peripheries, the driving wheel is connected with the first driven wheel, and the second driven wheel is connected with the flywheel, so that two-stage speed change is realized. This chainless bicycle can reduce gear friction, have the variable speed function, improve the comfort level of riding.

Description

Chainless bicycle and driving device thereof

Technical Field

The utility model relates to a bicycle field specifically relates to a chainless bicycle and drive arrangement of this kind of chainless bicycle.

Background

Bicycles are widely used means of transportation by manpower instead of walking. The power of the vehicle is derived from the kinetic energy provided by people, no external fuel or energy is consumed, and the vehicle is an environment-friendly vehicle. In recent years, the shared bicycle is widely applied in society, and plays a good positive role in bringing convenience to people to go out and reducing environmental pollution. However, the conventional bicycle has some problems. Firstly, most of the existing bicycles are of chain structures, a crank chain wheel is driven to rotate by treading a pedal manually to provide power to drive a rear wheel to move forwards, the chain drives the rear wheel to have large friction coefficient, and the defects of easy aging deformation, looseness, rustiness, high noise and the like are also caused, and the chain is easy to fall off to cause the phenomenon that the chain falls off at a critical moment; secondly, the knee part of a person needs to do circular motion all the time in the riding process, the person is easy to feel sore and powerless after riding for a long time, and the middle-aged and old people are easy to cause knee injury. At present, some researches are carried out in the field of chainless bicycles, for example, Chinese patent application 201910895260.2, which adopts the insertion connection of left and right shaft transmission teeth and tooth grooves on a fixed ring to drive the rotation of a left shaft and a right shaft to drive tires to rotate. Although chain transmission is replaced, and riding motion is changed from circular motion to up-and-down motion, the chainless bicycle adopts a mode of shaft rotation, friction resistance between shafts is large, a speed change function is not needed, riding is quite laborious, and actual popularization is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can reduce gear friction, have the variable speed function, improve the chainless bicycle of the comfort level of riding is provided.

The utility model provides a chainless bicycle, including handlebar, frame, front wheel, rear wheel, the frame front portion with the front wheel pivot is connected, the frame rear portion is connected with drive arrangement, drive arrangement includes:

the pedal rod comprises a left pedal rod and a right pedal rod; the upper end of the left pedal rod and the upper end of the right pedal rod are respectively pivoted with a left side supporting rod and a right side supporting rod at the rear part of the frame;

the chain connecting rods comprise a left chain connecting rod and a right chain connecting rod; the left link lever comprises a first left link lever member and a second left link lever member, wherein a first end of the first left link lever member is pivotally connected to the left pedal lever at a position near a middle of the left pedal lever, and a second end of the first left link lever member is pivotally connected to a first end of the second left link lever member; the second end of the second left connecting rod component is fixedly connected with the main rotating shaft; the right chain link comprises a first right chain link part and a second right chain link part, wherein a first end of the first right chain link part is pivotally connected to the right pedal lever at a position near the middle of the right pedal lever, and a second end of the first right chain link part is pivotally connected to a first end of the second right chain link part; the second end of the second right chain link component is fixedly connected with the main rotating shaft;

the driving wheel is fixedly connected with the main rotating shaft; a driven wheel assembly including a first driven wheel and a second driven wheel coaxially disposed; the driven wheel assembly is pivotally connected to a right side supporting rod at the rear part of the frame through a driven wheel shaft; the hub is arranged in the middle of the main rotating shaft and is in pivot connection with the main rotating shaft; the flywheel is fixedly connected with one end of the hub; the periphery of the driving wheel is jointed with the periphery of the first driven wheel; a peripheral edge of the second driven wheel engages a peripheral edge of the flywheel; the rear wheel is coaxially arranged with the hub.

Optionally, a left pedal is connected to the lower end of the left pedal rod, and a right pedal is connected to the lower end of the right pedal rod.

Optionally, the driving wheel is a bearing disc provided with a plurality of bearings uniformly along a circumference, and the plurality of bearings of the driving wheel are meshed with the teeth of the first driven wheel.

Optionally, the second driven wheel is a bearing disc provided with a plurality of bearings uniformly along a circumference, the plurality of bearings of the second driven wheel being intermeshed with the teeth of the flywheel.

The utility model also provides a drive arrangement of chainless bicycle, include:

the pedal rod comprises a left pedal rod and a right pedal rod; the upper end of the left pedal rod and the upper end of the right pedal rod are respectively pivoted with a left supporting rod and a right supporting rod of the frame;

the driving wheel is fixedly connected with the main rotating shaft; a driven wheel assembly including a first driven wheel and a second driven wheel coaxially disposed; the driven wheel assembly is pivotally connected to a right side supporting rod of the frame through a driven wheel shaft; the hub is arranged in the middle of the main rotating shaft and is in pivot connection with the main rotating shaft; the flywheel is fixedly connected with one end of the hub; the periphery of the driving wheel is jointed with the periphery of the first driven wheel; the peripheral edge of the second driven wheel engages the peripheral edge of the flywheel.

The utility model has the advantages of as follows:

(1) the bicycle has the advantages that the traditional crank, the chain wheel and the chain are removed, namely the middle triangular part of the traditional bicycle is eliminated, the structure is simpler and more practical, the fault problem that the chain of the bicycle falls off is avoided, the bicycle is more in trend of streamline design, and air resistance is reduced.

(2) The structural design of the pedal rod and the link rod is adopted, the circular motion of the legs of the human body is changed into the up-and-down motion, and the damage of the circular motion of the knee parts to the human body is thoroughly avoided.

(3) The traditional gear tooth meshing between the driving wheel and the driven wheel and between the driven wheel and the flywheel is changed into the meshing between the bearing and the gear, so that the frictional resistance is greatly reduced; and adopt the design of two-stage speed change, saved the physical demands of riding widely, promoted the comfort level of riding.

Drawings

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

Fig. 1 is a schematic view of the right side structure of the chainless bicycle of the present invention.

Fig. 2 is a schematic view of the left side structure of the chainless bicycle of the present invention.

Fig. 3 is a perspective view of the driving apparatus of the chainless bicycle of the present invention.

Fig. 4 is another perspective view of the driving apparatus of the chainless bicycle of the present invention.

Fig. 5 is a sectional view of the driving apparatus of the chainless bicycle of the present invention.

Reference numerals:

1-a bicycle; 11-a handlebar; 12-a frame; 13-front wheels; 14-rear wheel; 10-a drive device;

151-left foot bar; 152-right pedal lever; 121-left side support bar; 122-right side support bar;

161-left chain link rod; 162-right chain link bar; 1611-a first left linkage rod component;

1612-a second left linkage member; 1621-a first right chain link component; 1622-a second right chain link component;

17-a main rotating shaft; 18-a driving wheel; 19-a driven wheel assembly; 191 — a first driven wheel; 192-a second driven wheel;

195-driven axle 195; 20-flower drum; 21-a flywheel; 1511-left pedal; 1521 Right pedal

180-driving wheel bearing; 1920-driven wheel bearing; 1910-driven gear teeth; 210-flywheel tooth

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of systems consistent with certain aspects of the invention, as detailed in the appended claims.

As shown in fig. 1-2, a chainless bicycle 1 according to an embodiment of the present invention includes a handlebar 11, a frame 12, a front wheel 13, and a rear wheel 14, wherein a front portion of the frame 12 is pivotally connected to the front wheel 13, and a rear portion of the frame 12 is connected to a driving device 10.

Referring to fig. 1-5, according to one embodiment of the present invention, the driving device 10 includes: a left foot lever 151 and a right foot lever 152; the upper end of the left pedal rod 151 and the upper end of the right pedal rod 152 are respectively pivoted with the left supporting rod 121 and the right supporting rod 122 at the rear part of the frame 12; left link bar 161 and right link bar 162; the left linking lever 161 comprises a first left linking lever member 1611 and a second left linking lever member 1612, wherein a first end of the first left linking lever member 1611 is pivotally connected to the left pedal lever 151 at a position near the middle of the left pedal lever 151, and a second end of the first left linking lever member 1611 is pivotally connected to a first end of the second left linking lever member 1612; a second end of the second left linking rod element 1612 is fixedly connected to the main rotating shaft 17; right chain link 162 includes a first right chain link component 1621 and a second right chain link component 1622, wherein a first end of first right chain link component 1621 is pivotally connected to right pedal lever 152 proximate a central portion of right pedal lever 152, and a second end of first right chain link component 1621 is pivotally connected to a first end of second right chain link component 1622; a second end of the second right chain link member 1622 is fixedly connected to the main rotating shaft 17; the driving wheel 18 is fixedly connected with the main rotating shaft 17 through a key groove and a set screw; a driven wheel assembly 19 comprising a first driven wheel 191 and a second driven wheel 192 arranged coaxially, the driven wheel assembly 19 being pivotally connected to the right side support bar 122 at the rear of the frame by a driven wheel shaft 195; the hub 20 is arranged in the middle of the main rotating shaft 17, bearings are arranged on two sides of the hub 20 and fixedly connected with the main rotating shaft 17 through limit screws, and the flywheel 21 is fixed at one end of the hub 20 through positioning screws; the periphery of the driving pulley 18 engages the periphery of the first driven pulley 191; the peripheral edge of the second driven pulley 192 engages the peripheral edge of the flywheel 21; the rear wheel 14 is disposed coaxially with the hub 20.

According to an embodiment of the present invention, the lower end of the right pedal rod 152 of the left pedal rod 151 is connected to a left pedal 1511 and a right pedal 1521, respectively. When riding, the rider steps on the right pedal 1521 by using the body weight force of the rider, the right pedal rod 152 transmits the force to the right chain link rod 162 by using the lever dynamics principle, so that the top end of the first right chain link rod part 1621 descends, and the middle shaft between the first right chain link rod part 1621 and the second right chain link rod part 1622 ascends and circles to drive the lower end of the second right chain link rod part 1622 to rotate. The lower end of the second right-side link rod 1622 is fixed on the right side of the main rotating shaft 17 to drive the main rotating shaft 17 to rotate, the main rotating shaft 17 rotates to drive the driving wheel 18 to rotate, the driving wheel 18 drives the first driven wheel 191 and the second driven wheel 192 to rotate, the second driven wheel 192 drives the flywheel 21 to rotate, the flywheel 21 is fixed on the hub 20 in a threaded manner, the flywheel 21 drives the hub 20 to rotate, and the hub 20 is linked with the rim tire through spokes, so that the rear wheel 14 is driven to rotate. The main rotation shaft 17 rotates and simultaneously rotates the lower end of the second left link 1612 of the left link 161 to rotate and swing, the upper end of the first left link 1611 rises to raise the left pedal rod 151 linked thereto, the left pedal rod 151 is depressed again, the left link 161 again rotates the main rotation shaft to rotate and simultaneously rotate the rear wheel 14 and raise the right pedal rod 152. This action is repeated and the wheel continues to rotate forward.

According to an embodiment of the present invention, preferably, the driving wheel 18 is a bearing disc provided with a plurality of driving wheel bearings 180 uniformly along the circumference, and the plurality of driving wheel bearings 180 of the driving wheel are engaged with the driven wheel teeth 1910 of the first driven wheel 191, and the frictional resistance of the engagement is much smaller than the conventional gear engagement resistance. The second driven wheel 192 is a bearing plate provided with a plurality of driven wheel bearings 1920 uniformly along the circumference, and the plurality of driven wheel bearings 1920 of the second driven wheel are engaged with the flywheel teeth 210 of the flywheel 21, and the frictional resistance of the engagement is much smaller than that of the conventional gear.

Referring to fig. 3-5, the driving wheel and the driven wheel of the driving device of the present invention realize two-stage speed change, thereby improving the rotation speed ratio and saving the manpower when riding. Wherein, the first stage speed change is realized by driving the first driven wheel 191 by the driving wheel 18, and the second stage speed change is realized by driving the flywheel 21 by the second driven wheel 192.

It should be understood that the "left" and "right" side components of the present invention may be mirror images.

It should be understood that the driving device of the chainless bicycle of the present invention can also be applied to the front wheel of a tricycle or other bicycles needing to be driven at the front wheel; to the bicycle that many people ride jointly, the utility model discloses a drive arrangement of chainless bicycle can also be applied to on a plurality of corresponding drive wheels. Furthermore, for other vehicles that are ridden by human power, for example, boats driven by human power pedals may also employ this drive arrangement.

The features and benefits of the present invention are explained with reference to the embodiments. Accordingly, the invention is expressly not limited to these exemplary embodiments illustrating some possible non-limiting combination of features, which may be present alone or in other combinations of features.

The above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within 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

1. The utility model provides a chainless bicycle, includes handlebar, frame, front wheel, rear wheel, the frame front portion with front wheel pivot connection, the frame rear portion is connected with drive arrangement, its characterized in that: the driving device includes:

2. The chainless bicycle of claim 1, wherein: the lower extreme of left foot bar is connected with left footboard, the lower extreme of right foot bar is connected with right footboard.

3. The chainless bicycle of claim 1, wherein: the driving wheel is a bearing disc uniformly provided with a plurality of bearings along the periphery, and the plurality of bearings of the driving wheel are meshed with the teeth of the first driven wheel.

4. The chainless bicycle according to any one of claims 1 to 3, wherein: the second driven wheel is a bearing disc provided with a plurality of bearings uniformly along the periphery, and the plurality of bearings of the second driven wheel are meshed with the teeth of the flywheel.

5. A drive device for a chainless bicycle, comprising:

6. The drive device of the chainless bicycle according to claim 5, wherein: the driving wheel is a bearing disc uniformly provided with a plurality of bearings along the periphery, and the plurality of bearings of the driving wheel are meshed with the teeth of the first driven wheel.

7. The drive device of the chainless bicycle according to claim 5 or 6, wherein: the second driven wheel is a bearing disc provided with a plurality of bearings uniformly along the periphery, and the plurality of bearings of the second driven wheel are meshed with the teeth of the flywheel.