CN209795724U

CN209795724U - Lever type crank chain disc driving device with additional flexible transmission pair arranged on hub

Info

Publication number: CN209795724U
Application number: CN201920210094.3U
Authority: CN
Inventors: 陆昌新
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2019-12-17
Anticipated expiration: 2029-02-19

Abstract

The utility model provides a be equipped with the vice lever crank chain dish drive arrangement of additional flexible transmission on the colored hub, it is through adorning conventional crank chain dish on the lever to it is vice to set up one set of additional flexible transmission on the colored hub of rear axle, and the realization will be done reciprocal swing from this and drive the lever mechanism of flexible transmission pair motion and the crank chain dish mechanism complex of doing the motion of plane crank rocker be in the same place, makes two sets of power complete combinations, realizes the alternating power conversion of gradual change formula. The driving device has high operating efficiency, can be used for left and right sharing during riding, has continuous, sufficient and stable physical energy conversion and is not easy to fatigue, is used for driving the bicycle, can be suitable for various occasions such as long-distance cross country, short-distance racing, urban leisure, mountain tourism and the like, and can also be used for driving other small-sized vehicles and various pedal type manpower machines.

Description

Lever type crank chain disc driving device with additional flexible transmission pair arranged on hub

Technical Field

The utility model relates to a drive arrangement specifically is a be equipped with the vice lever crank chain dish drive arrangement of additional flexible transmission on the flower hub of rear axle.

background

The bicycle is popular with people due to the advantages of simple and stable structure, convenient use, environmental protection, energy conservation, good body building effect and the like. The most common driving device of the bicycle is a crank chain disc type driving device, the device has been used for years, but the device is still not perfect in the aspects of driving efficiency, reducing the fatigue strength of riding and the like, which is more obvious when the bicycle is used on an uphill slope, the conventional bicycle driven by a crank chain disc type driving device is often difficult to step and is not easy to run, and the variable speed bicycle driven by the crank chain disc type driving device is also fatigue-free and unsatisfactory.

Therefore, the conventional crank chain disc driving device is improved, a lever mechanism which does reciprocating swing and drives a flexible transmission pair to move and a crank chain disc mechanism which does a plane crank rocker to move are combined together to form a novel driving device, the driving device can realize complete combination of two sets of power, has high efficiency, can be used in left and right directions during riding, can convert physical energy continuously, fully and stably, and is not easy to fatigue.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be equipped with the vice lever crank chain dish drive arrangement of additional flexible transmission on the flower hub of rear axle to solve current bicycle drive arrangement efficiency lower, easily produce the tired problem of riding.

The utility model discloses the concrete technical scheme who adopts as follows:

A lever type crank chain disc driving device with a hub provided with an additional flexible transmission pair comprises a rack, wherein the front end of the rack is hinged with a lever transversely extending backwards to the middle of the rack, the hinged point of the front end of the lever and the rack is a lever fulcrum, the middle of the lever is connected with the lower end of a tension spring, the upper end of the tension spring is connected to the rack on the upper part of the lever, and the tension spring forms suspension on the lever; the rear end of the lever is provided with a shaft seat, a rotatable middle shaft is arranged in the shaft seat, the two ends of the middle shaft are respectively provided with a left crank and a right crank which are opposite in position, the tail ends of the left crank and the right crank are respectively hinged with a left pedal and a right pedal, and the middle part of the middle shaft, which is inclined to the right, is fixedly provided with a chain plate; the rear end of the frame is provided with a rear shaft, the rear shaft is sleeved with a rotatable hub, the hub is provided with a flywheel, the outer rings of the flywheel and the chain plate are engaged with a surrounding chain ring, and the hub outputs power; and the hub is also provided with an additional flexible transmission pair.

The flexible transmission pair comprises a chain, an overrunning transmission wheel and an expansion spring, wherein the overrunning transmission wheel is connected to the hub through a ratchet wheel and pawl one-way clutch inside the overrunning transmission wheel, the rotating direction of the overrunning transmission wheel is the same as that of the flywheel, the outer ring of the overrunning transmission wheel is a chain wheel, one end of the chain is fixedly connected to a support rod extending downwards from the front end of the lever, the support rod is perpendicular to the lever and keeps rotating synchronously, the other end of the chain extends backwards, the chain bypasses the overrunning transmission wheel from top to bottom and then is connected to the rear end of the expansion spring forwards, and the front end of the expansion spring is fixedly connected.

The chain in the flexible transmission pair can also be replaced by a pull rope, and the chain wheel which surpasses the outer ring of the transmission wheel is replaced by a pulley with a U-shaped groove.

In addition, the combination of the above technical solution with the tension spring up and the lever down can be replaced by the combination of the lever up and the push spring down, thereby forming the second technical solution.

A lever type crank chain disc driving device with a hub provided with an additional flexible transmission pair comprises a rack, wherein the front end of the rack is hinged with a lever transversely extending backwards to the middle of the rack, the hinged point of the front end of the lever and the rack is a lever fulcrum, the middle of the lever is connected with the upper end of a thrust spring, the lower end of the thrust spring is connected to the rack at the lower part of the lever, and the thrust spring supports the lever; the rear end of the lever is provided with a shaft seat, a rotatable middle shaft is arranged in the shaft seat, the two ends of the middle shaft are respectively provided with a left crank and a right crank which are opposite in position, the tail ends of the left crank and the right crank are respectively hinged with a left pedal and a right pedal, and the middle part of the middle shaft, which is inclined to the right, is fixedly provided with a chain plate; the rear end of the frame is provided with a rear shaft, the rear shaft is sleeved with a rotatable hub, the hub is provided with a flywheel, the outer rings of the flywheel and the chain plate are engaged with a surrounding chain ring, and the hub outputs power; a tensioning mechanism is arranged on the machine frame at the lower part of the chain ring, and the tensioning mechanism is used for tensioning the chain ring; and the hub is also provided with an additional flexible transmission pair.

The flexible transmission pair comprises a chain, a fixed pulley, an overrunning transmission wheel and a telescopic spring, wherein the overrunning transmission wheel is connected to the hub through a ratchet-pawl one-way clutch inside the overrunning transmission wheel, the rotating direction of the overrunning transmission wheel is the same as that of the flywheel, the outer ring of the overrunning transmission wheel is a chain wheel, the fixed pulley is erected on the rack above the lever, the outer ring of the fixed pulley is also a chain wheel, one end of the chain is fixedly connected to a rod body of the lever, the other end of the chain extends upwards to bypass the fixed pulley, extends backwards to bypass the overrunning transmission wheel from top to bottom and is connected to the rear end of the telescopic spring forwards, and the front end of the telescopic spring is fixedly connected to the.

Similarly, the chain in the flexible transmission pair can also be replaced by a pull rope, and the chain wheel on the outer ring of the fixed pulley and the chain wheel on the outer ring of the overrunning transmission wheel are replaced by pulleys with U-shaped grooves.

The utility model discloses a drive arrangement is through adorning conventional crank chain dish on the lever to it is vice to set up one set of additional flexible transmission on the flower hub of rear axle, and the realization will be done reciprocal swing from this and drive flexible transmission secondary motion's lever mechanism and the crank chain dish mechanism complex of doing the motion of plane crank rocker be in the same place, makes two sets of power complete combinations, realizes the gradual change formula conversion of power in turn. The driving device has high operating efficiency, can be used for left and right sharing during riding, has continuous, sufficient and stable physical energy conversion and is not easy to fatigue, is used for driving the bicycle, is suitable for various occasions such as long-distance cross country, short-distance racing, urban leisure, mountain tourism and the like, and also can be used for driving other small-sized vehicles and various pedal type manpower machines.

Drawings

Fig. 1 is a schematic structural view of the driving device adopting a tension spring to combine an upper lever and a lower lever.

Fig. 2 is a schematic structural view of the driving device adopting a lever to combine an upper thrust spring and a lower thrust spring.

In the figure: 1-a frame, 2-a lever, 3-a lever fulcrum, 4-a tension spring, 5-a middle shaft, 6-a crank, 7-a pedal, 8-a chain disc, 9-a rear shaft, 10-a hub, 11-a flywheel, 12-a chain ring, 13-a chain, 14-an overrunning driving wheel, 15-a telescopic spring, 16-a support rod, 17-a thrust spring, 18-a tensioning mechanism and 19-a fixed pulley.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, as a first technical solution, the driving device includes a frame 1, a lever 2 transversely extending backward to the middle of the frame 1 is hinged to the front end of the frame 1, the hinged point of the front end of the lever 2 and the frame 1 is a lever fulcrum 3, the middle of the lever 2 is connected to the lower end of a tension spring 4, the upper end of the tension spring 4 is connected to the frame 1 above the lever 2, and the tension spring 4 forms a suspension for the lever 2; the rear end of the lever 2 is provided with a shaft seat, a rotatable middle shaft 5 is arranged in the shaft seat, the two ends of the middle shaft 5 are respectively provided with a left crank 6 and a right crank 6 which are opposite in position, the tail ends of the left crank 6 and the right crank 6 are respectively hinged with a left pedal 7 and a right pedal 7, and the middle part of the middle shaft 5 which is inclined to the right is fixedly provided with a chain disc 8; a rear shaft 9 is erected at the rear end of the frame 1, a rotatable hub 10 is sleeved on the rear shaft 9, a flywheel 11 is arranged on the hub 10, a surrounding chain ring 12 is meshed between the flywheel 11 and the outer ring of the chain disc 8, and power is output by the hub 10; an additional set of flexible transmission pairs is also arranged on the hub 10.

The flexible transmission pair comprises a chain 13, an overrunning transmission wheel 14 and a telescopic spring 15, wherein the overrunning transmission wheel 14 is connected to the hub 10 through a ratchet-pawl one-way clutch inside the overrunning transmission wheel 14, the rotating direction of the overrunning transmission wheel 14 is the same as that of the flywheel 11, the outer ring of the overrunning transmission wheel 14 is a chain wheel, one end of the chain 13 is fixedly connected to a support rod 16 extending downwards from the front end of the lever 2, the support rod 16 is vertical to the lever 2 and keeps synchronous rotation, the other end of the chain 13 extends backwards and bypasses the overrunning transmission wheel 14 from top to bottom to be connected to the rear end of the telescopic spring 15 forwards, and the front end of the telescopic spring 15 is fixedly connected to the rack. The chain 13 in the flexible transmission pair can also be replaced by a pull rope, and a chain wheel which exceeds the outer ring of the transmission wheel 14 is replaced by a pulley with a U-shaped groove.

The first technical proposal comprises the following working processes:

When the pedal 7 at the top dead center position is stepped on, the downward pedaling force provided for the lever 2 is the largest, the rotation torque provided for the crank 6 is zero, the pedaling force cannot drive the chain disc 8 to rotate, but the lever 2 can swing downwards, the lever 2 pulls the chain 13 through the supporting rod 16, the chain 13 drives the overrunning transmission wheel 14 to rotate, and the overrunning transmission wheel 14 drives the hub 10 to rotate. The pedal 7 is continuously treaded to rotate for a certain angle, the chain disc 8 rotates due to the rotation torque of the crank 6, so that the flywheel 11 can be driven to rotate, and the hub 10 is driven to rotate by the flywheel 11 and the overrunning transmission wheel 14 at the same time. When the crank 6 is rotated to the horizontal position, the moment of rotation is at its maximum, at which point the pedaling force provided to the lever 2 is reduced to zero. When the pedal 7 is stepped to the position of the lower dead point, the rotation moment provided for the crank 6 becomes zero again, and the downward stepping force provided for the lever 2 becomes maximum again. It can be seen that the power supplied by the lever 2 to the hub 10 by means of the overrunning drive 14 and by the crank 6 to the hub 10 by means of the flywheel 11 are complementary to each other and achieve a gradual alternate power conversion. The tension spring 4 can enable the lever 2 to automatically reset, so that reciprocating swing of the lever 2 and rotation of the crank 6 are not affected, the lever 2 can additionally increase treading efficiency through power provided by the overrunning driving wheel 14, high-frequency treading is facilitated, and the track of the pedals 7 is in an approximately vertical oval shape during treading.

As shown in fig. 2, as a second technical solution, the driving device includes a frame 1, a lever 2 transversely extending backward to the middle of the frame 1 is hinged to the front end of the frame 1, the hinged point of the front end of the lever 2 and the frame 1 is a lever fulcrum 3, the middle of the lever 2 is connected to the upper end of a thrust spring 17, the lower end of the thrust spring 17 is connected to the frame 1 at the lower part of the lever 2, and the lever 2 is supported by the thrust spring 17; the rear end of the lever 2 is provided with a shaft seat, a rotatable middle shaft 5 is arranged in the shaft seat, the two ends of the middle shaft 5 are respectively provided with a left crank 6 and a right crank 6 which are opposite in position, the tail ends of the left crank 6 and the right crank 6 are respectively hinged with a left pedal 7 and a right pedal 7, and the middle part of the middle shaft 5 which is inclined to the right is fixedly provided with a chain disc 8; a rear shaft 9 is erected at the rear end of the frame 1, a rotatable hub 10 is sleeved on the rear shaft 9, a flywheel 11 is arranged on the hub 10, a surrounding chain ring 12 is meshed between the flywheel 11 and the outer ring of the chain disc 8, and power is output by the hub 10; a tensioning mechanism 18 is arranged on the frame 1 at the lower part of the chain ring 12, and the chain ring 12 is tensioned by the tensioning mechanism 18; an additional set of flexible transmission pairs is also arranged on the hub 10.

the flexible transmission pair comprises a chain 13, a fixed pulley 19, an overrunning transmission wheel 14 and an expansion spring 15, wherein the overrunning transmission wheel 14 is connected to the hub 10 through a ratchet-pawl one-way clutch inside the overrunning transmission wheel 14, the rotating direction of the overrunning transmission wheel 14 is the same as that of the flywheel 11, the outer ring of the overrunning transmission wheel 14 is a chain wheel, the fixed pulley 19 is erected on the rack 1 above the lever 2, the outer ring of the fixed pulley 19 is also the chain wheel, one end of the chain 13 is fixedly connected to the rod body of the lever 2, the other end of the chain 13 upwards extends to bypass the fixed pulley 19, then backwards extends to bypass the overrunning transmission wheel 14 from top to bottom and is connected to the rear end of the expansion spring 15 forwards, and the front end of the expansion spring 15 is fixedly connected. The chain 13 in the flexible transmission pair can also be replaced by a pull rope, and the chain wheel on the outer ring of the fixed pulley 19 and the chain wheel on the outer ring of the overrunning transmission wheel 14 are replaced by pulleys with U-shaped grooves.

The working process of the driving device of the second technical scheme is similar to that of the driving device of the first technical scheme, and the difference is that: the first technical means is that the resistance arm of the lever 2 is arranged at the lower part, and the second technical means is that the resistance arm of the lever 2 is arranged at the upper part. In the second solution, the tensioning mechanism 18 is added because the lower part of the chain loop 11 is slack when the lever 2 is swung down.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A lever type crank chain disc driving device with a hub provided with an additional flexible transmission pair is characterized in that: the driving device comprises a rack, a lever transversely extending backwards to the middle of the rack is hinged to the front end of the rack, the hinged point of the front end of the lever and the rack is a lever fulcrum, the middle of the lever is connected with the lower end of a tension spring, the upper end of the tension spring is connected to the rack on the upper portion of the lever, and the tension spring is used for suspending the lever; the rear end of the lever is provided with a shaft seat, a rotatable middle shaft is arranged in the shaft seat, the two ends of the middle shaft are respectively provided with a left crank and a right crank which are opposite in position, the tail ends of the left crank and the right crank are respectively hinged with a left pedal and a right pedal, and the middle part of the middle shaft, which is inclined to the right, is fixedly provided with a chain plate; the rear end of the frame is provided with a rear shaft, the rear shaft is sleeved with a rotatable hub, the hub is provided with a flywheel, the outer rings of the flywheel and the chain plate are engaged with a surrounding chain ring, and the hub outputs power; the hub is also provided with an additional flexible transmission pair;

2. The drive of claim 1, wherein: the chain in the flexible transmission pair is replaced by a pull rope, and the chain wheel which exceeds the outer ring of the transmission wheel is replaced by a pulley with a U-shaped groove.

3. a lever type crank chain disc driving device with a hub provided with an additional flexible transmission pair is characterized in that: the driving device comprises a rack, a lever transversely extending backwards to the middle of the rack is hinged to the front end of the rack, the hinged point of the front end of the lever and the rack is a lever fulcrum, the middle of the lever is connected with the upper end of a thrust spring, the lower end of the thrust spring is connected to the rack at the lower part of the lever, and the thrust spring supports the lever; the rear end of the lever is provided with a shaft seat, a rotatable middle shaft is arranged in the shaft seat, the two ends of the middle shaft are respectively provided with a left crank and a right crank which are opposite in position, the tail ends of the left crank and the right crank are respectively hinged with a left pedal and a right pedal, and the middle part of the middle shaft, which is inclined to the right, is fixedly provided with a chain plate; the rear end of the frame is provided with a rear shaft, the rear shaft is sleeved with a rotatable hub, the hub is provided with a flywheel, the outer rings of the flywheel and the chain plate are engaged with a surrounding chain ring, and the hub outputs power; a tensioning mechanism is arranged on the machine frame at the lower part of the chain ring, and the tensioning mechanism is used for tensioning the chain ring; the hub is also provided with an additional flexible transmission pair;

4. A drive arrangement according to claim 3, wherein: a chain in the flexible transmission pair is replaced by a pull rope, and a chain wheel on the outer ring of the fixed pulley and a chain wheel on the outer ring of the overrunning transmission wheel are replaced by pulleys with U-shaped grooves.