CN213347707U - Reversible device for realizing bicycle outdoor exercise function in narrow space - Google Patents

Abstract

The utility model relates to a device that can overturn for realizing bicycle outdoor exercises function in narrow and small space, which comprises a frame, a support arm, a top rod, a transmission structure and an inertia flywheel, wherein one end of the support arm is hinged on the frame, the other end of the support arm is provided with two top rods which are oppositely arranged, a rear wheel axle of a bicycle is fixed on the support arm through the top rod, 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 driving wheel is arranged on the frame, and the inertia flywheel is; the front end of the ejector rod matched with the rear wheel axle is a hollow conical surface, 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 axle nut of the bicycle is clamped through the clamping groove seats on the two sides; the clamping groove seat and the rod sleeve are rotatably connected. The utility model discloses increased and removed conversion function temporarily, let ride passerby conversion state more convenient and simple.

Description

Reversible device for realizing bicycle outdoor exercise function in narrow space

Technical Field

The utility model relates to a body-building apparatus field, more specifically say, relate to a device that can overturn that realizes bicycle outdoor exercises function in narrow and small 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: when the user uses the device, the speed of the vehicle is too slow, so that the user is very inconvenient when exercise is completed or the user wants to return to the exercise temporarily, and the user cannot rapidly switch the normal riding state and the slow riding state.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a device that can overturn at narrow and small space realization bicycle outdoor exercises function, increased and temporarily removed the conversion function, let ride passerby conversion state more convenient and simple.

The utility model provides a technical scheme that its technical problem adopted is: the turnover device capable of achieving the outdoor exercise function of the bicycle in a narrow space comprises a rack, a supporting arm, ejector rods, a transmission structure and an inertia flywheel, wherein one end of the supporting arm is hinged to 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 driving wheel is installed on the rack, and the inertia flywheel is fixed at one end of the rolling shaft; the front end of the ejector rod matched with the rear wheel axle is a hollow conical surface, 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 axle nut of the bicycle is clamped through the clamping groove seats on the two sides; the clamping groove seat and the rod sleeve are in rotatable connection.

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

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

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

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.

Implement the utility model discloses a can overturning device who realizes bicycle outdoor exercises function in narrow and small space has following beneficial effect:

1. the utility model discloses the device is when using, at first is connected with the rear axle of ordinary bicycle, and the rear wheel and the roller bearing contact of bicycle, when riding, exert the effort to the pedal, drive the roller bearing when the rear wheel rotates and rotate, drive the drive wheel through reducing gear box and belt drive mode and rotate, and the speed of normally riding reduces substantially through the reducing gear box to realize that the bicycle moves ahead at a slow speed and removes. The front end of the ejector rod is a hollow conical surface, the rear shaft of the bicycle is clamped into the conical surface, and the head of the ejector rod can rotate. The front end of the ejector rod matched with the rear wheel axle is a hollow conical surface, the rear axle of the bicycle is clamped into the conical surface, the head of the ejector rod can rotate, the clamping groove seat and the rod sleeve are rotatably connected, when the device is not used, the device can be turned upwards, the device can be directly turned over and hung behind the bicycle, and the dismounting step is omitted.

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; 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.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic structural view of the reversible device for outdoor exercise of 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 inventive device;

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

FIG. 5 is a schematic view showing the usage status of the reversible device of the present invention for realizing the outdoor exercise function of the bicycle in a narrow space;

fig. 6 is a schematic view of the device of the present invention when turned upwards.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in figures 1-5, the device for realizing the function of outdoor exercise 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.

The utility model discloses the device is when using, at first is connected with the rear axle of ordinary bicycle, and the rear wheel and the roller bearing 5 contact of bicycle, when riding, exert the effort to the pedal, drive roller bearing 5 and rotate when the rear wheel rotates, drive wheel 7 through reducing gear box 15 and belt drive's mode and rotate, and the speed of normally riding reduces substantially through reducing gear box 15 to realize that the bicycle moves ahead at a slow speed and removes. 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 utility model discloses increase an inertia flywheel on the roller bearing. 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 =70+10=80 Kg;

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

kinetic energy of bicycle advancing: e =1/2mv 2=1/2 × 80 × 2.7^2= 291J;

the inertia flywheel of the utility model is designed with the inertia J = 3600kg.mm ^ 2;

measuring the rotating speed Wn =3500r/min =366rad/s of the inertia flywheel during riding at the same speed;

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

consider that the utility model discloses speed is low, and the kinetic energy of advancing can neglect.

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.

Further, the utility model discloses the device still includes magnetic damping mechanism, and magnetic damping mechanism includes red copper ring 10, fixing base 12, rubidium magnet 11, guide arm 13, spring 14 and regulating switch 17, and rubidium magnet 11 is installed on fixing base 12, and fixing base 12 slidable mounting is on guide arm 13, and it has spring 14 that supports fixing base 12 to still overlap on the guide arm 13, and inertia flywheel 9 drives red copper ring 10 and rotates, and regulating switch 17 passes through wire rope and is connected with fixing base 12.

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 embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (5)

1. The turnover device is characterized by comprising a rack, a support arm, ejector rods, a transmission structure and an inertia flywheel, wherein one end of the support arm is hinged to the rack, the other end of the support arm is provided with the two ejector rods which are oppositely arranged, a rear wheel axle of a bicycle is fixed on the support 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 driving wheel is installed on the rack, and the inertia flywheel is fixed at one end of the rolling shaft; the front end of the ejector rod matched with the rear wheel axle is a hollow conical surface, 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 axle nut of the bicycle is clamped through the clamping groove seats on the two sides; the clamping groove seat and the rod sleeve are in rotatable connection.

2. The reversible device for outdoor exercise of bicycle in small space as claimed in claim 1, wherein said frame is provided with auxiliary wheels.

3. The reversible device for outdoor exercise of bicycle in small space as claimed in claim 2, wherein the width of said auxiliary wheel is 180-220 mm.

4. The reversible device for outdoor exercise of bicycle in small space as claimed in claim 1, wherein the lower end of said frame is provided with a detachable base.

5. The turnover device for realizing the outdoor exercise function of the bicycle in a narrow space as claimed in 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 mounted on the fixed seat, the fixed seat is slidably mounted on the guide rod, the guide rod is further sleeved with the spring abutting against the fixed seat, 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.

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