CN106314665B

CN106314665B - Running bicycle

Info

Publication number: CN106314665B
Application number: CN201610850799.2A
Authority: CN
Inventors: ***
Original assignee: Shenzhen Qile Technology Innovation Co ltd
Current assignee: Shenzhen Hongjiayu Technology Co ltd
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2023-05-02
Anticipated expiration: 2036-09-26
Also published as: CN106314665A

Abstract

The invention discloses a running bicycle, which comprises a front beam, a rear fork, a rear ring, a driven sprocket, a front fork, a front ring, a driving sprocket, a chain, two handle rods and two crank arm beams, wherein the front beam is obliquely arranged upwards from back to front; one end of each crank arm beam is respectively pivoted with the two handle rods, and the other end of each crank arm beam is connected to the front beam in a mode of moving along the extending direction of the front beam. The motion track of the crank arm beam is similar to the motion track of feet during running, so that a rider can ride the bicycle and can also realize running motion of the rider.

Description

Running bicycle

Technical Field

The invention relates to a bicycle, in particular to a running bicycle.

Background

At present, although the improvement of the living standard of substances brings great convenience to human beings, the modern living mode has negative influence on the physical health condition of the human beings. For example, modern people have little physical exercise due to busy work, and the health index is continuously decreasing.

It is appreciated that many people living in many cities now have conscious about doing exercises. A more economical exercise-bicycle riding has been silently emerging in cities.

However, riding a bicycle can only exercise a certain function of the body, such as the exercise of the body by running, but cannot be achieved by riding a bicycle.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a running bicycle for a human to realize running actions.

In order to solve the technical problems, the invention adopts the following technical scheme:

a running bicycle comprises a front beam, a rear fork, a rear ring, a driven sprocket, a front fork, a front ring, a driving sprocket, a chain, two handle bars and two crank arm beams, wherein the front beam is obliquely arranged from back to front and upwards; wherein,,

the crank arm beam comprises a supporting beam, a pivot beam and a sliding beam, wherein the pivot beam and the sliding beam are arranged at two ends of the supporting beam and form a certain angle with the supporting beam, one end of the pivot beam is pivoted with the handle rod, the other end of the pivot beam is hinged with the supporting beam, one end of the sliding beam is a movable end, the movable end is connected with the front beam in a sliding fit manner and can slide up and down along the axial direction of the front beam, and the other end of the sliding beam is provided with an elastic damping device and is connected with the supporting beam through the elastic damping device; the bolster can rotate downwards by a certain angle along the initial position around the hinge point between the bolster and the pivot beam;

the front beam is provided with damping driving devices, the damping driving devices are respectively connected with movable ends of the two sliding beams, the movable ends provide opposite damping force when sliding downwards in the front beam, and the movable ends provide driving force in the same direction when sliding upwards in the front beam.

In the above technical solution, further, the elastic damping device includes a spring and a hydraulic buffer connected to the bolster and the sliding beam respectively, an obtuse angle is formed between the bolster and the sliding beam, the bolster has an extension section extending outwards along the bolster, the extension section and the sliding beam form an acute angle, and two ends of the hydraulic buffer are fixedly connected to the bolster and the sliding beam respectively, so that the bolster and the sliding beam are fixedly connected; the base end of the hydraulic buffer is fixedly connected to the outer side of the sliding beam, the telescopic buffer end of the hydraulic buffer is connected to the extension section on the supporting beam, and when the supporting beam is positioned at the initial position, the hydraulic buffer and the supporting beam are mutually perpendicular; and hydraulic oil is arranged in the hydraulic buffer, and when the telescopic buffer end of the hydraulic buffer performs telescopic motion, the hydraulic oil provides a damping force opposite to the motion direction of the hydraulic buffer.

In the above technical scheme, further, damping drive arrangement includes the U type hydraulic pipe that sets up on the front beam, sets up the piston at the hydraulic pipe both ends respectively, the slider is connected respectively to the piston, the slider setting can be on the front beam along the loose end direction of motion of sliding beam up and down on the front beam, the slider is connected with the loose end of sliding beam respectively.

In the above technical scheme, further, the guide way has all been seted up to the both sides of front beam along front beam axis direction, be provided with the walking wheel on the movable end of slip roof beam, the walking wheel is followed the guide way slides.

In the above technical solution, further, the installation position of the driving sprocket is higher than the installation position of the driven sprocket.

In the above technical scheme, further, the pedal is fixedly arranged on the crank arm beam, the pedal is arranged on the bolster in parallel relative to the bolster, and when the travelling wheel moves to the forefront end of the front beam, the bolster faces downwards relative to the horizontal plane.

In the above technical scheme, further, a baffle plate for preventing the foot from sliding out of the pedal plate forward is arranged at the front end of the pedal plate.

In the above technical solution, further, the foot board is provided with a non-slip protrusion or a score.

Compared with the prior art, the running bicycle has the beneficial effects that: the motion track of the crank arm beam of the bicycle is similar to the motion track of the foot during running in the riding process, and a rider can realize running motion in the riding process.

Drawings

Fig. 1 is a schematic structure view of a running bicycle according to the present invention.

FIG. 2 is a schematic view of the crank arm beam structure of the running bicycle of the present invention.

FIG. 3 is a schematic view of a damping driving device for a running bicycle according to the present invention.

Fig. 4 is a simplified schematic diagram of the running bike of the present invention.

In the figure:

1-a front beam; 2-a rear fork; 3-a rear circle; 4-front fork; 5-front circle; 6-driven sprocket; 7-driving a sprocket; 8-crank arm beams; 9-foot pedals; 10-baffle plates; 11-a chain; 12-a handle; 13-a spring; 14-a hydraulic buffer; 15. a hydraulic pipe; 16. a piston; 17. a slide block; 801-a pivot beam; 802-a sliding beam; 803-bolster.

Detailed Description

The present invention will be described in detail below with reference to the drawings and detailed description to enable those skilled in the art to better understand the technical scheme of the present invention.

Before describing the running bicycle of the present invention, the reason why the running bicycle of the prior art cannot realize the running motion of human is described.

When riding the bicycle in the prior art, the rider needs to tread the pedal and do circular motion along with the pedal by feet all the time, and the feet and the pedal do matched motion at a certain point, such as the front, the front ends of the feet can touch the ground when the bicycle turns, so the motion track of the feet is circular, and when the rider runs, the motion track of the feet is similar to the ellipse with the long axis as the running direction and the short axis as the vertical direction. That is, the motion trace of the foot during riding is inconsistent with the motion trace of the foot during running, so that running motion cannot be realized or running effect cannot be achieved.

As shown in fig. 1, an embodiment of the present invention discloses a running bicycle, which includes a front beam 1, a rear fork 2, a rear ring 3, a driven sprocket 6, a driving sprocket 7, a chain 11, two handle bars 12, and two crank arms 8.

The front beam 1 can be formed by welding, the rear fork 2 is rigidly and fixedly connected to the rear end of the front beam 1, the rear ring 3 is arranged on the rear fork 2, the driven sprocket 6 and the rear ring 3 are coaxially arranged, the front fork 4 can be formed by welding, the front fork 4 is pivoted on the front fork 4 at the front end of the front beam 1, the front ring 5 can be 20 inches, 24 inches or 26 inches, the front fork 4 is arranged, the driving sprocket 7 is pivoted on the joint of the front beam 1 and the rear fork 2, the chain 11 is connected with the driven sprocket 6 and the driving sprocket 7, the two handle rods 12 are arranged on two sides of the driving sprocket 7, and the two crank arms 8 are provided with foot pedals 9 (the same as the feet of a normal person and 100% safe in motion); the first ends of the two crank beams 8 are pivoted to the two handle bars 12, respectively, and the second ends of the two crank beams 8 are connected to the front beam 1 in a manner of moving along the extending direction of the front beam 1. The connection mode of the crank arm beam 8 is equivalent to the connection mode of a connecting rod in a crank connecting rod, so that the motion track of the crank arm beam 8 is synthesized by rotation of the crank arm beam and front-back and up-down translation. When the crank arm beam 8 moves forwards and backwards, the corner of the crank arm beam 8 is just approximate to the corner of the foot (generated by the translation of the foot instead of the corner of the foot) when the human body runs, and the vertical position of the crank arm beam 8 is just approximate to the vertical position of the foot when the human body runs. That is, the movement trace of the crank arm beam 8 is similar to the running trace of a human on a road surface (the contact surface of the foot and the foot rest 9 is 100%).

In the present invention, as shown in fig. 2, preferably, the crank arm beam 8 includes a supporting beam 803, a pivoting beam 801 and a sliding beam 802, wherein the pivoting beam 801 and the sliding beam 802 are arranged at two ends of the supporting beam 803 and form a certain angle with the supporting beam 803, one end of the pivoting beam 801 is pivoted with the handle 12, the other end of the pivoting beam 801 is hinged with the supporting beam 803, one end of the sliding beam 802 is a movable end, the movable end is connected with the front beam 1 in a sliding fit manner, and can slide up and down along the axis direction of the front beam, and the other end of the sliding beam is provided with an elastic damping device and is connected with the supporting beam 803 through the elastic damping device; the bolster 803 may be rotated downward by a certain angle along its initial position about the hinge point with the pivot beam 801. The elastic damping device can set the bolster fixedly arranged in the crank arm beam to a structure capable of rotating to a certain extent under the action of the action force, so that impact force generated in the moment that the movable end of the sliding beam moves up and down in the front beam in the alternative rotation process of the existing crank arm beam can be effectively buffered. The prior crank arm beam structure generally adopts a mode that a supporting beam is fixedly connected with a pivot joint beam and a sliding beam, the supporting beam, the pivot joint beam and the sliding beam adopt an integral crank rod structure, one end of the integral crank rod structure moves up and down along a fixed linear rail, the other end of the integral crank rod structure rotates under the action of a rotary driving rod, the connecting rod structure can generate an impact force in the process of up-down motion conversion in the motion process, and the crank arm beam adopts an integral structure, so the impact force is often absorbed by a rider, the riding comfort is influenced, and the joints of the rider can be damaged. By adopting the crank arm beam, the elastic damping device absorbs the impact force, so that riding comfort is improved, riding is more continuous, and damage to joints of people can be reduced. Meanwhile, when the existing running bicycle is ridden, the foot surface of a person usually acts on the pedal, and when the crank arm beam circularly moves, the angle change of the pedal corresponds to the change of the movement angle of the crank arm beam completely, and under the condition, the relative angles of the toe and the heel or the force application part of the rider in the riding process are different from the mode of the actual running. When running, the force is gradually applied from the foot surface to the toe, so that the foot pedal can truly simulate the action mode of the foot during riding, and the conversion of the acting force of the foot pedal from the foot surface to the toe can be realized by adopting the crank arm beam structure in the running process. Specifically, the elastic damping device comprises a spring 13 and a hydraulic buffer 14 which are respectively connected with a bolster 803 and a sliding beam 802, the hydraulic buffer force provided by the spring 13 and the hydraulic buffer 14 when riding is larger than the dead weight of a person, but smaller than the sum of the dead weight of the person and the acting force of the person on the pedal when riding, and meanwhile, the rigidity of the spring and the reaction force provided by the hydraulic buffer can be adjusted according to the needs of the rider; an obtuse angle is formed between the supporting beam 803 and the sliding beam 802, the supporting beam 803 is provided with an extending section which extends outwards along the supporting beam, an acute angle is formed between the extending section and the sliding beam, and two ends of the hydraulic buffer 14 are respectively and fixedly connected to the supporting beam 803 and the sliding beam 802, so that the supporting beam 803 and the sliding beam 802 are fixedly connected; the base end of the hydraulic buffer 14 is fixedly connected to the outer side of the sliding beam 802, the telescopic buffer end of the hydraulic buffer 14 is connected to an extension section on the supporting beam 803, and when the supporting beam is located at the initial position, the hydraulic buffer and the supporting beam are mutually perpendicular; and hydraulic oil is arranged in the hydraulic buffer, and when the telescopic buffer end of the hydraulic buffer performs telescopic motion, the hydraulic oil provides a damping force opposite to the motion direction of the hydraulic buffer. In order to further ensure the motion effect of the crank arm beam, a hydraulic cylinder can be arranged on the supporting beam, and one contact end of the sliding beam and the supporting beam is arranged in the hydraulic cylinder, so that the sliding beam and the supporting beam form a damping structure, and meanwhile, the stability of the whole structure of the crank arm beam can be effectively ensured, and the riding stability is improved.

In order to make riding more comfortable and increase the riding movement effect, as shown in fig. 3, a damping driving device is arranged on the front beam 1, the damping driving devices are respectively connected with the movable ends of the two sliding beams 802, the movable ends provide opposite damping force when sliding downwards in the front beam, and the movable ends provide driving force in the same direction when sliding upwards in the front beam. Through analysis of the motion trail of the bicycle, when one movable end of the sliding beam moves downwards, the process of applying force to the pedal plate downwards to pedal the pedal plate by a rider is equivalent to the process of applying force to pedal the ground when the rider runs, and meanwhile, when the movable end moves downwards, the other movable end moves upwards, and the process is equivalent to the leg swinging process of the other foot when the rider runs; to better simulate this process, the damping drive is used to provide a counter-directed damping force to the force leg and correspondingly a driving force for the free swing of the swing leg.

Specifically, the damping driving device comprises a U-shaped hydraulic pipe 15 arranged on the front beam 1, and pistons 16 respectively arranged at two ends of the hydraulic pipe 15, wherein the pistons 16 are respectively connected with sliding blocks 17, the sliding blocks 17 are arranged at two sides of the front beam 1 and can slide up and down along the moving direction of the movable end of the sliding beam, and the sliding blocks 17 are respectively connected with the movable end of the sliding beam. The sliding blocks 17 and the pistons 16 are connected through connecting rods, when the movable ends of the two sliding beams alternately move up and down on the front beam, the sliding blocks are driven to move, the two pistons are driven to move up and down in the hydraulic pipe, hydraulic oil is arranged in the hydraulic pipe, and when one piston moves down, the other piston is driven to move up under the action of the hydraulic force, so that damping force and driving force are respectively provided. According to the motion analysis, the two crank arm beams have a conversion of up-and-down motion in the motion process, and the driving force can also effectively ensure smoothness between the conversion.

The key point of the invention is that: the foot rest 9 is fixedly provided on the crank beam 8 so that the overall motion trajectory and posture of the foot corresponds to a real running motion. The reason is that: when a human runs, the foot part hardly rotates relative to the lower leg, namely, the angle of the foot part rotating around the ankle is small, the angle of the foot part mainly rotates around the knee along with the lower leg is large, namely, the foot part mainly moves along with the lower leg in an approximately elliptical translation mode, and hardly rotates, so that the foot pedal 9 is fixedly arranged on the crank arm beam in order to meet the running state of the foot part when the human runs, so that the foot part only moves along with the elliptical translation of the crank arm beam 8, and does not generate the state of the foot part, and further the foot pedal is more similar to the real running of the human.

From the above, it is known that another important reason why the running function of the conventional bicycle cannot be achieved (the first reason has been described, namely, the pedal plate 9 performs a circular motion) is that: the foot rest 9 is pivotally connected to the handle 12 so that the foot is rotated at a large angle with the ankle as a center angle, and when the foot rest 9 moves to the lowest point, the foot is unstable due to the rotatable foot rest 9, so that the running function cannot be realized.

As described above, the running bicycle of the present invention can be used for both riding and running.

The crank arm beam 8 can have various structures, but the specific structure of the crank arm beam 8 needs to prevent the crank arm beam from interfering with (colliding with) a rider. There may be a plurality of structures in which the second end of the crank arm beam 8 is connected to the front beam 1 so as to move in the extending direction of the front beam 1.

In a preferred embodiment of the present invention, both sides of the front beam 1 are provided with guide grooves along the extending direction of the front beam 1; the crank arm beam 8 comprises a supporting beam 803, a pivoting beam 801 fixed at the rear end of the supporting beam 803 and forming a set angle with the supporting beam 803, a sliding beam 802 fixed at the front end of the supporting beam 803 and forming a set angle with the supporting beam 803, the free end of the pivoting beam 801 is pivoted with the handle 12, travelling wheels are arranged on the sliding beam 802 and slide along the guide grooves, and the pedal 9 is arranged on the supporting beam 803.

It should be explained that: the predetermined angle is such that the slide beam 802 does not interfere with the rider and the movement trace of the crank arm beam 8 is closer to the running movement trace. The predetermined angle can be calculated by plane geometry according to the known running foot movement track, and is therefore known and predictable to be preset.

In order to make the motion track of the crank arm beam more approximate to real running, and when a rider runs on the crank arm beam, the crank arm beam drives the bicycle to run through the handle bar 12, as shown in fig. 4, the crank arm beam, the handle bar 12 and the front Liang Jianhua are formed into a crank link mechanism, and as a lot of simulated running experiments, when the travelling wheel moves to the forefront end of the front beam, namely, the handle bar 12 rotates to be in line with the connecting lines of the two ends of the crank arm beam, the supporting beam 803 (or the pedal plate) in the middle of the crank arm beam rotates to pass through the horizontal plane and inclines downwards relative to the horizontal plane, so that the rider can better drive the handle bar 12 to rotate while running, and the running power of the bicycle is stronger. Thus, the foot pedal 9 of the present invention is fixed to the joist 803 without relative rotation with the joist 803, the foot pedal is disposed parallel to the joist 803, and the road wheels are disposed in a front beam position in an inclined relationship with the joist 803 with respect to the horizontal plane such that the joist 803 is downward with respect to the horizontal plane when the road wheels are moved to the forefront end of the front beam.

It should be explained that: the profile structure of the crank beams, particularly the angles between the pivot beam 801 and the slide beam 802 and the bolster 803, which can achieve the above-mentioned relationship can be various, and in practical design, both the limitation of the above-mentioned relationship on the angles between the beams in the crank beams and the interference problem of the beams in the crank beams to the limbs of the rider during running are considered, and the optimal structure is found through calculation and experiment.

In order to make the motion track of the crank arm beam 8 more approximate to the running track, the driving sprocket 7 is higher than the driven sprocket 6, so that the crank arm beam 8 is conveniently arranged.

The front end of the foot rest 9 is provided with a baffle 10 which blocks the foot from sliding forward out of the foot rest 9. The foot pedal 9 is provided with cleats or scores.

The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.

Claims

1. Running bicycle, its characterized in that: the front fork comprises a front beam, a rear fork, a rear ring, a driven sprocket, a front fork, a front ring, a driving sprocket, a chain, two handle rods and two crank arm beams, wherein the front beam is obliquely arranged from back to front, the rear fork is rigidly and fixedly connected to the rear end of the front beam; wherein,,

the front beam is provided with damping driving devices which are respectively connected with movable ends of the two sliding beams, the damping driving devices provide opposite damping force when the movable ends slide downwards in the front beam, and the damping driving devices provide driving force in the same direction when the movable ends slide upwards in the front beam;

the elastic damping device comprises a spring and a hydraulic buffer which are respectively connected with the supporting beam and the sliding beam, an obtuse angle is formed between the supporting beam and the sliding beam, the supporting beam is provided with an extending section which extends outwards along the supporting beam, an acute angle is formed between the extending section and the sliding beam, and two ends of the hydraulic buffer are respectively and fixedly connected with the supporting beam and the sliding beam, so that the supporting beam and the sliding beam are fixedly connected; the base end of the hydraulic buffer is fixedly connected to the outer side of the sliding beam, the telescopic buffer end of the hydraulic buffer is connected to the extension section on the supporting beam, and when the supporting beam is positioned at the initial position, the hydraulic buffer and the supporting beam are mutually perpendicular; and hydraulic oil is arranged in the hydraulic buffer, and when the telescopic buffer end of the hydraulic buffer performs telescopic motion, the hydraulic oil provides a damping force opposite to the motion direction of the hydraulic buffer.

2. The running bike of claim 1, wherein: the damping driving device comprises a U-shaped hydraulic pipe arranged on the front beam and pistons respectively arranged at two ends of the hydraulic pipe, wherein the pistons are respectively connected with sliding blocks, the sliding blocks are arranged on two sides of the front beam and can slide up and down along the moving direction of the moving end of the sliding beam on the front beam, and the sliding blocks are respectively connected with the moving end of the sliding beam.

3. The running bike of claim 1, wherein: guide grooves are formed in two sides of the front beam along the axis direction of the front beam, travelling wheels are arranged on the movable ends of the sliding beams, and the travelling wheels slide along the guide grooves.

4. The running bike of claim 1, wherein the drive sprocket is mounted higher than the driven sprocket.

5. A running bike according to claim 3, wherein: the pedal plate is fixedly arranged on the crank arm beam, the pedal plate is arranged on the supporting beam in parallel relative to the supporting beam, and when the travelling wheel moves to the forefront end of the front beam, the supporting beam faces downwards relative to the horizontal plane.

6. The running bike of claim 5, wherein: the front end of the pedal plate is provided with a baffle plate for preventing feet from sliding out of the pedal plate forwards.

7. The running bike of claim 5, wherein: the foot pedal is provided with a non-slip protrusion or a notch.