CN111672083A

CN111672083A - Device for realizing bicycle outdoor exercise function in narrow space

Info

Publication number: CN111672083A
Application number: CN202010608803.0A
Authority: CN
Inventors: 叶常青; 乐加胜; 王浩
Original assignee: Wuhan Bailih Sports Equipment Co ltd
Current assignee: Wuhan Bailih Sports Equipment Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-09-18

Abstract

The invention relates to a device for realizing the outdoor exercise function of a bicycle in a narrow space, which comprises a rack, a supporting arm, ejector rods, a transmission structure and an inertia flywheel, wherein one end of the supporting arm is hinged on the rack, the other end of the supporting arm is provided with the two ejector rods which are oppositely arranged, a rear wheel axle of the bicycle is fixed on the supporting arm through the ejector rods, the transmission structure comprises a rolling shaft, a reduction gearbox and a driving wheel, the rolling shaft is in contact with the bicycle wheel and transmits torque, the rolling shaft is connected with the reduction gearbox, the reduction gearbox is connected with the driving wheel through a belt and a belt pulley, the driving wheel is arranged on the rack, and the inertia flywheel is fixed. The invention can be matched with bicycles with different sizes and structures for use, realizes slow riding in narrow space, and has the same riding feeling as that of normal riding.

Description

Device for realizing bicycle outdoor exercise function in narrow space

Technical Field

The invention relates to the field of fitness equipment, in particular to a device for realizing the outdoor exercise function of a bicycle in a narrow space.

Background

Under the background of advocating sports fitness by people today, many people own home fitness equipment. The existing running machine and the spinning bike are the first choice of most people, however, when the running machine, the spinning bike and other equipment are used for body building, the equipment is fixed, multiple people cannot compete, and the interest of competitive competition is lacked.

CN104826316B discloses a bicycle deceleration training device, but it has the following disadvantages or shortcomings:

1. because only two-stage speed reduction is adopted, the speed reduction ratio is not enough to be used for outdoor training. 2. Large volume and high manufacturing cost. 3. The connection mode is very unreliable, the distance between the riding center of gravity of a person and the ground is not less than 1m, and the riding bicycle is basically fixed in a single point mode, so that the force of the riding bicycle falling to the side can not be overcome almost. 4. The universality is not strong, the size and the structure of the bicycle from 14 inches to 29 inches are very different, and the connection possibility with most bicycles is almost zero. 5. The deformation of the tires on one roller or two rollers is very large, which causes great resistance to riding, while aerobic exercise refers to exercise with low intensity and rich rhythm, which has long exercise time of about 30 minutes or more, moderate or medium exercise intensity, and can not be done when riding resistance is too large. 6. The bicycle has great inertia when being ridden, has no inertia wheel simulating the traveling inertia of the bicycle, and basically has no feeling of riding the bicycle normally. 7. The proper riding resistance cannot be adjusted according to the training requirement.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device for realizing the outdoor exercise function of a bicycle in a narrow space, which can be matched with bicycles with different sizes and structures for use, realizes slow riding in the narrow space and has the same riding feeling as that of normal riding.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a device of realizing bicycle outdoor exercises function in narrow and small space, includes frame, support arm, ejector pin, transmission structure and inertia flywheel, the one end of support arm articulates in the frame, the other end of support arm is equipped with the ejector pin of two relative settings, through the ejector pin is fixed the rear wheel axle of bicycle on the support arm, the transmission structure includes roller bearing, reducing gear box and drive wheel, roller bearing and bicycle wheel contact and transmission moment of torsion, the roller bearing is connected with the reducing gear box, the reducing gear box passes through the belt and the belt pulley is connected with the drive wheel, the drive wheel is installed in the frame, the one end at the roller bearing is fixed to the inertia flywheel.

In the scheme, an adjusting rod is further arranged between the rack and the supporting arm, a first support is arranged on the supporting arm, a second support is arranged on the rack, a threaded hole shaft with a threaded hole is arranged on the first support, a blind hole shaft with a blind hole is arranged on the second support, an external thread is arranged on the adjusting rod, and one end of the adjusting rod penetrates through the threaded hole of the threaded hole shaft and is inserted into the blind hole of the blind hole shaft.

In the scheme, the frame is provided with the auxiliary wheels.

In the scheme, the magnetic damping device further comprises a magnetic damping mechanism, wherein the magnetic damping mechanism comprises a red copper ring, a fixed seat, a rubidium magnet, a guide rod, a spring and an adjusting switch, the rubidium magnet is installed on the fixed seat, the fixed seat is installed on the guide rod in a sliding mode, the spring abutting against the fixed seat is further sleeved on the guide rod, the inertia flywheel drives the red copper ring to rotate, and the adjusting switch is connected with the fixed seat through a steel wire rope;

in the initial state, the spring elasticity pushes the fixing seat to slide to the lowest end of the guide rod, at the moment, the rubidium magnet is in a state of being completely separated from the outside of the red copper ring, no magnetic resistance exists, the adjusting switch is adjusted, the steel wire rope pulls the fixing seat to move upwards, the rubidium magnet is close to the red copper ring, the red copper ring rotating along with the inertia flywheel cuts a magnetic induction line to generate current, eddy current is generated inside the red copper ring to consume energy so as to provide resistance, when the rubidium magnet and the red copper ring are completely overlapped, the magnetic flux passing through the red copper ring is maximum, and the generated current and the generated resistance are maximum values.

In the scheme, the multi-stage transmission gear in the reduction gearbox is a plastic gear.

In the scheme, the lower end of the rack is provided with the detachable base.

In the above scheme, the ejector rod comprises a handle, a rod sleeve, a screw rod and a clamping groove seat, the screw rod penetrates through the rod sleeve to be connected with the clamping groove seat, and a rear shaft nut of the bicycle is clamped through the clamping groove seats on the two sides.

In the above scheme, the slot seat and the rod sleeve are rotatably connected.

In the scheme, the width of the auxiliary wheel is 180-220 mm.

The device for realizing the outdoor exercise function of the bicycle in the narrow space has the following beneficial effects:

1. when the device is used, the device is firstly connected with a rear wheel shaft of a common bicycle, a rear wheel of the bicycle is in contact with a rolling shaft, acting force is applied to a pedal when the bicycle is ridden, the rolling shaft is driven to rotate when the rear wheel rotates, a driving wheel is driven to rotate through a reduction gearbox and a belt transmission mode, the normal riding speed is greatly reduced through the reduction gearbox, so that the bicycle moves forwards at a slow speed, inertia during riding can be achieved through the arrangement of an inertia flywheel, and the smoothness of riding movement is ensured.

2. The copper sheet and the rare earth permanent magnet are used through the eddy current effect, the effect of the uphill resistance is achieved by applying the resistance, and more riding scenes are achieved.

3. The reduction gearbox is connected with the driving shaft in a belt transmission mode, and the reduction gearbox is protected from being damaged by the aid of the characteristic that a belt is overloaded and skidded, so that the reduction gearbox can adopt a plastic gear set, the weight of the device can be further reduced, and production cost is reduced.

4. The angle between the supporting arm and the frame can be adjusted by rotating the adjusting rod so as to adapt to wheels of different types, reduce the pressure of tires and rolling shafts, adjust resistance and avoid riding difficulty.

5. The auxiliary wheel is arranged on the frame, which can prevent the bicycle from falling down and ensure that the bicycle has a certain swing space.

6. The detachable base is matched with the lower end of the rack, and the driving wheel is lifted through the mounting base to be away from the ground and lose efficacy, so that the effect of being still and usable is achieved. At the moment, the bicycle can be used as a spinning bicycle and a bicycle, and can meet the requirement of functional diversity of a customer.

7. When the device is not used, the device can be turned upwards, and the device can be directly turned up and hung behind a bicycle, so that the step of dismounting is omitted.

8. The invention can freely move forward in a narrow space, complete the sports of racing in nature or bicycle racing fields, increase the interest of body building, promote and encourage families or partners mutually, and solve the problem that general people cannot persist in the boring and boring body building sports.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural view of the device for realizing the outdoor exercise function of the bicycle in a narrow space;

FIG. 2 is an exploded schematic view of the part of FIG. 1;

FIG. 3 is a cross-sectional view of the device of the present invention;

FIG. 4 is a schematic structural view of a magnetic damping mechanism;

FIG. 5 is a schematic view showing the use state of the device for performing the outdoor exercise function of the bicycle in a narrow space according to the present invention;

fig. 6 is a schematic view of the device of the present invention turned upside down.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in figures 1-5, the device for realizing the outdoor exercise function of the bicycle in a narrow space comprises a frame 2, a supporting arm 1, a mandril 4, a transmission structure and an inertia flywheel 9.

One end of the supporting arm 1 is hinged on the frame 2, the other end of the supporting arm 1 is provided with two opposite push rods 4, and a rear wheel axle of the bicycle is fixed on the supporting arm 1 through the push rods 4. The transmission structure is positioned inside the first shell 18 and the second shell 19 and comprises a roller 5, a reduction gearbox 15 and a driving wheel 7, the roller 5 is in contact with a bicycle wheel and transmits torque, the roller 5 is connected with the reduction gearbox 15, the reduction gearbox 15 is connected with the driving wheel 7 through a belt 6 and a belt pulley 16, the driving wheel 7 is installed on the rack 2, and the inertia flywheel 9 is fixed at one end of the roller 5.

When the device is used, the device is firstly connected with a rear wheel shaft of a common bicycle, a rear wheel of the bicycle is in contact with the rolling shaft 5, acting force is applied to pedals when the bicycle is ridden, the rolling shaft 5 is driven to rotate when the rear wheel rotates, the driving wheel 7 is driven to rotate through the reduction gearbox 15 and a belt transmission mode, the normal riding speed is greatly reduced through the reduction gearbox 15, and therefore the bicycle moves forwards at a low speed. The reduction ratio of the reduction gearbox 15 is more than 700 times, and the normal riding speed can be greatly reduced, so that the aim of only riding for one circle at home after half an hour of movement is achieved. Through setting up inertia flywheel 9 and making the inertia that can reach when riding from the normal driving and ride, guarantee the smooth and easy of the motion of riding.

The bicycle advances the in-process, because self has certain kinetic energy, this kinetic energy can keep the stability and the smooth and easy degree of riding, even at the in-process of riding, the power on the pedal reduces to some extent, and the motion state of bicycle can not change suddenly yet, but change and steadily change according to the dynamics on the pedal. By utilizing the point, the invention adds an inertia flywheel on the roller. Kinetic energy generated by high-speed rotation of the inertia flywheel is equivalent to riding kinetic energy, and the effect of simulating riding is achieved.

Take a 20-inch bicycle ridden by 70kg as an example

The weight of the vehicle is 10Kg, and the total mass m of the people and the vehicle is 70+ 10-80 Kg;

the riding speed of the 20-inch bicycle is generally 10-15km/h, and 10km/h is 10/3.6 and 2.7 m/S;

kinetic energy of bicycle advancing: e is 1/2mv 2 is 1/2 multiplied by 80 multiplied by 2.7 is 291J;

the designed rotational inertia J of the inertia flywheel is 3600kg.mm ^ 2;

measuring the rotating speed Wn of the inertia flywheel to 3500r/min to 366rad/s when the bicycle is ridden at the same speed;

the kinetic energy W of the rotation of the inertia flyer is 1/2Jw ^2 ═ 1/2 × 3600 × 10^ (-6) × 366^2 ^ 241J;

given the low speed of the present invention, the kinetic energy of the forward motion is negligible.

The formula E is approximately equal to W, so that the scheme is almost as smooth as a naturally-ridden bicycle, and the real bicycle can be completely simulated.

Further, still be equipped with between frame 2 and the support arm 1 and adjust pole 3, be equipped with first support on the support arm 1, be equipped with the second support on the frame 2, be equipped with the screw hole axle 22 of taking the screw hole on the first support, be equipped with the blind hole axle 23 of taking the blind hole on the second support, be equipped with the external screw thread on adjusting pole 3, adjust the screw hole of screw hole axle 22 and insert in the blind hole of blind hole axle 23 of pole 3 one end. Through the angle between the adjustable support arm 1 of rotation regulation pole 3 and frame 2 to the wheel of adaptation different grade type reduces tire and roller bearing 5's pressure, adjusts the resistance, avoids riding the difficulty.

Further, be equipped with auxiliary wheel 8 on the frame 2, auxiliary wheel 8 width is 180 ~ 220mm, and preferred 200mm both can prevent that the bicycle from empting, make the bicycle have certain space of swaying again, more is close the actual scene of riding.

Furthermore, the device also comprises a magnetic damping mechanism, wherein the magnetic damping mechanism comprises a red copper ring 10, a fixed seat 12, a rubidium magnet 11, a guide rod 13, a spring 14 and an adjusting switch 17, the rubidium magnet 11 is installed on the fixed seat 12, the fixed seat 12 is installed on the guide rod 13 in a sliding mode, the spring 14 which is abutted against the fixed seat 12 is further sleeved on the guide rod 13, the inertia flywheel 9 drives the red copper ring 10 to rotate, and the adjusting switch 17 is connected with the fixed seat 12 through a steel wire rope.

In an initial state, the spring 14 pushes the fixing seat 12 to slide to the lowest end of the guide rod 13, at the moment, the rubidium magnet 11 is in a completely disengaged state outside the red copper ring 10, at the moment, no magnetic resistance exists, the adjusting switch 17 is adjusted, the steel wire rope pulls the fixing seat 12 to move upwards, the rubidium magnet 11 and the red copper ring 10 are close to each other, the red copper ring 10 rotating along with the inertia flywheel 9 cuts magnetic induction lines to generate current, eddy current is generated inside the red copper ring 10 to consume energy so as to provide resistance, when the rubidium magnet 11 and the red copper ring 10 are completely overlapped, the magnetic flux passing through the red copper ring 10 is maximum at the moment, and the generated current and the generated resistance are maximum values. The copper sheet and the rare earth permanent magnet are used through the eddy current effect, the effect of the uphill resistance is achieved by applying the resistance, and more riding scenes are achieved.

The reduction gearbox 15 is connected with the driving shaft in a belt 6 transmission mode, and the reduction gearbox 15 is protected from being damaged by the overload and slip characteristic of the belt 6, so that the plastic gear set is adopted in the embodiment of the reduction gearbox 15, the weight of the device can be further reduced, and the production cost is reduced.

Further, a detachable base 20 is arranged at the lower end of the frame 2. Lifting the drive wheel 7 by the mounting base 20 can cause the drive wheel 7 to lose lift from the ground, thereby achieving the effect of being stationary and usable. At the moment, the bicycle can be used as a spinning bicycle and a bicycle, and can meet the requirement of functional diversity of a customer.

Further, the ejector rod 4 comprises a handle 25, a rod sleeve 24, a screw rod 26 and a clamping groove seat 27, the screw rod 26 penetrates through the rod sleeve 24 to be connected with the clamping groove seat 27, and a rear axle nut of the bicycle is clamped through the clamping groove seats 27 on the two sides, so that the bicycle is fixed. The slot seat 27 and the rod sleeve 24 are rotatably connected, and when the device is not used, the device can be turned upwards, and the device can be directly turned up to be hung at the rear of a bicycle, as shown in fig. 6, and the dismounting step is omitted.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a realize device of bicycle outdoor exercises function in narrow and small space, its characterized in that, includes frame, support arm, ejector pin, transmission structure and inertia flywheel, the one end of support arm articulates in the frame, the other end of support arm is equipped with the ejector pin of two relative settings, through the ejector pin is fixed the rear wheel axle of bicycle on the support arm, the transmission structure includes roller bearing, reducing gear box and drive wheel, the roller bearing contacts and transmission moment of torsion with the bicycle wheel, the roller bearing is connected with the reducing gear box, the reducing gear box passes through the belt and the belt pulley is connected with the drive wheel, the drive wheel is installed in the frame, the inertia flywheel is fixed in the one end of roller bearing.

2. The device for realizing the outdoor exercise function of the bicycle in the narrow space according to claim 1, wherein an adjusting rod is further arranged between the frame and the supporting arm, a first support is arranged on the supporting arm, a second support is arranged on the frame, a threaded hole shaft with a threaded hole is arranged on the first support, a blind hole shaft with a blind hole is arranged on the second support, an external thread is arranged on the adjusting rod, and one end of the adjusting rod penetrates through the threaded hole of the threaded hole shaft and is inserted into the blind hole of the blind hole shaft.

3. The device for realizing the outdoor exercise function of the bicycle in the narrow space as claimed in claim 1, wherein the frame is provided with an auxiliary wheel.

4. The device for realizing the outdoor exercise function of the bicycle in the narrow space according to claim 1, further comprising a magnetic damping mechanism, wherein the magnetic damping mechanism comprises a red copper ring, a fixed seat, a rubidium magnet, a guide rod, a spring and an adjusting switch, the rubidium magnet is installed on the fixed seat, the fixed seat is installed on the guide rod in a sliding manner, the spring abutting against the fixed seat is further sleeved on the guide rod, the inertia flywheel drives the red copper ring to rotate, and the adjusting switch is connected with the fixed seat through a steel wire rope;

5. The device for realizing the function of outdoor exercises of bicycles in the narrow space according to claim 1, wherein the multi-stage transmission gear inside the reduction gearbox is a plastic gear.

6. The device for realizing the outdoor exercise function of the bicycle in the narrow space as claimed in claim 1, wherein the lower end of the frame is provided with a detachable base.

7. The device for realizing the outdoor exercise function of the bicycle in the narrow space according to claim 1, wherein the ejector rod comprises a handle, a rod sleeve, a screw rod and a clamping groove seat, the screw rod penetrates through the rod sleeve to be connected with the clamping groove seat, and a rear shaft nut of the bicycle is clamped through the clamping groove seats at two sides.

8. The device for outdoor exercise of bicycle in small space as claimed in claim 7, wherein the slot seat and the rod cover are rotatably connected.

9. The device for realizing the function of outdoor exercises of bicycles in the narrow space according to claim 3, wherein the width of the auxiliary wheel is 180-220 mm.