treadmill

Abstract

A kind of crutch, comprising: a rack, including a base, a front support and a rear support, the front support is provided with a handlebar;A drive mechanism, including a gear box and two actuating rods, the gear box includes an input shaft, two one-way bearings and an output shaft, the two one-way bearings are combined at the two ends of the input shaft, a plurality of gears are provided between the input shaft and the output shaft, the two one-way bearings are combined at the two ends of the input shaft, the other end is combined with two pedals;A resistance mechanism, which is connected to the output shaft and can be driven by the gear box and generates a resistance;A linkage mechanism is combined with the rear support and the two actuating rods, when one side of the actuating rod is down, the other side of the actuating rod is up, thereby avoiding the feeling of a ton of resistance when using is not smooth, and the structure can be more simplified.

Description

Technical Field

[0001] This invention relates to the technical field of training equipment for improving the strength and explosive power of leg muscles during sprinting, and more particularly to a stepper that avoids the feeling of jerky resistance and allows for a more streamlined structure. Background Technology

[0002] An existing stepper structure, as shown in Taiwan Patent No. I766793 "Leg Training Machine" (please refer to the patent for the reference numbers in the previous case; the symbols in this case will not be marked separately), when the pedal 22 is initially pressed down, the tension generated by the two belts 34 under force will push the two tension wheels 35 outward, thereby causing the two swing arms 350 to swing and stretch the two tension elastic bodies 351. The sudden stretching of the two tension elastic bodies 351 and the sudden opening of the two tension wheels 35, which causes the tension of the two belts 34 to suddenly decrease, will cause a sudden decrease in resistance and a feeling of stepping into emptiness when the pedal 22 is initially pressed down. As a result, when the two feet alternately and continuously press down on the two pedals 22, causing the two actuators 21 to swing up and down, there will be a jerky and unsmooth resistance. Furthermore, the slight tolerances in the fit between the two chains 24 and the two sprockets 23 further amplify the jerky feeling during use. In particular, the existing stepper uses the two chains 24 to drive the two sprockets 23, with the two drive elastic bodies 25 connected to one end of the chains 24 providing fixed resistance, and uses the two belts 34 to wind around the first pulley 31 and the first small pulley 320, and the second pulley 32 and the second small pulley 330 to drive the magnetic flywheel 33. This not only results in poor precision, making the movement less reliable and further increasing the jerky, unsmooth feeling during pedaling, but also makes the structure extremely complex.

[0003] In view of this, the inventors have deeply conceived and actively researched, improved and tested the aforementioned problems to develop and design this invention. Summary of the Invention

[0004] The main purpose of this invention is to solve the problems of existing stepper mechanisms, such as a jerky feeling during use and a very complex overall structure.

[0005] This invention provides a stepper, comprising a frame, a drive mechanism, a resistance mechanism, and a linkage mechanism. The frame includes a base and a front support and a rear support connected to the front and rear sides of the base, respectively. The front support has a handle for the user to rest their hands on. The drive mechanism includes a gearbox and two actuators. The gearbox is connected to the rear support and includes an input shaft, an input gear, two one-way bearings, an output gear, and multiple connecting gear sets. The input shaft is rotatable within the gearbox, and the input gear is fixedly connected to the input shaft. The two one-way bearings are connected to both ends of the input shaft, driving it to rotate in one direction. The output gear is rotatably connected to the gearbox and has an output shaft extending outside the gearbox. The multiple connecting gear sets are located between the input gear and the output gear and mesh with both to connect them. One end of each actuator is connected to the two one-way bearings, and the other end is connected to two freely rotatable pedals. The resistance mechanism is mounted on the rear support and connected to the output shaft. It can be driven by the gearbox and generates resistance. The resistance mechanism includes a flywheel, a movable damper, and a control line. The flywheel is connected to one end of the output shaft and can be driven by the output shaft to rotate synchronously. One end of the movable damper is oscillatingly connected to the rear support and has multiple magnetic blocks. By oscillating, it can approach or move away from the lower side of the flywheel to increase or decrease the number of magnetic blocks that exert magnetic force on the flywheel, thereby adjusting the resistance. The linkage mechanism is connected between the rear support and the two actuators, so that when one actuator swings down, it can link the other actuator to swing up.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0007] The stepper provided by this invention allows the user to rest their hands on the handlebars and place their feet on the two pedals, assuming a running sprint posture. By alternately pressing down with both feet, the two actuators swing up and down, which in turn drives the flywheel of the resistance mechanism via a gearbox. By controlling the damped swing motion and magnetically adjusting the rotational resistance of the flywheel, the user can effectively train the leg muscles' strength and explosive power during running and sprinting. In particular, the meshing and linkage of multiple gears within the gearbox ensures more precise and reliable movements without any feeling of missing a step, thus overcoming the shortcomings of existing steppers where the movements are jerky and the resistance is not smooth. Furthermore, the overall structure is relatively simple. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0009] Figure 2 This is a three-dimensional schematic diagram of the other side of the present invention.

[0010] Figure 3 This is a schematic diagram of the front side of the present invention.

[0011] Figure 4 This is a schematic diagram of the rear side of the present invention.

[0012] Figure 5 This is a three-dimensional enlarged schematic diagram of the gearbox interior and resistance mechanism of the present invention.

[0013] Figure 6 This is a three-dimensional enlarged schematic diagram of the inside of the gearbox and the other side of the resistance mechanism of the present invention.

[0014] Figure 7 This is a schematic diagram of the resistance adjustment action of the present invention.

[0015] Figure 8 This is a schematic diagram illustrating the usage state of the present invention.

[0016] Symbol explanation:

[0017] 10 racks, 11 bases

[0018] 12 front support, 120 handlebars

[0019] 121 Resistance Controller 13 Rear Bracket

[0020] 130 seat cushion

[0021] 20 Drive mechanism 21 Gearbox

[0022] 210 Input Shaft 211 Input Gear

[0023] 212 One-way bearing 213 Output gear

[0024] 214 Connecting gear set; 215 Output shaft

[0025] 22 Actuator lever 220 Pedal

[0026] 30 Resistance Mechanism 31 Flywheel

[0027] 32 Fixed damping 33 Movable damping

[0028] 34 control lines

[0029] 40. Linkage Mechanism; 41. Rotary Arm

[0030] 42 linkage, 43 link Detailed Implementation

[0031] Please see Figures 1 to 8 As shown, the stepper of the present invention includes a frame 10, a drive mechanism 20, a resistance mechanism 30, and a linkage mechanism 40, wherein:

[0032] The frame 10 includes a base 11 and a front support 12 and a rear support 13 connected to the front and rear sides of the base 11. The front support 12 has a handle 120 for the user to rest their hands on, and the rear support 13 has a seat cushion 130 for the user to sit on. Additionally, the front support 12 has a resistance controller 121 for adjusting the resistance of the resistance mechanism 30.

[0033] The drive mechanism 20 includes a gearbox 21 and two actuators 22. The gearbox 21 is mounted on the rear bracket 13 and includes an input shaft 210, an input gear 211, two one-way bearings 212, an output gear 213, and multiple connecting gear sets 214. The input shaft 210 is rotatable within the gearbox 21 and extends out of the gearbox 21 at both ends. The input gear 211 is fixedly mounted on the input shaft 210 and located inside the gearbox 21. The two one-way bearings 212 are mounted on both ends of the input shaft 210 and located outside the gearbox 21, driving the input shaft 210 to rotate in one direction. The output gear 213 is rotatably mounted within the gearbox 21 and has an output shaft 215 extending out of the gearbox 21. The plurality of connecting gear sets 214 are disposed in the gearbox 21 and between the input gear 211 and the output gear 213, respectively meshing with both to connect them. Each of the plurality of connecting gear sets 214 includes a pinion and a gear, and the gear ratio of the input gear 211, the output gear 213, and the plurality of connecting gear sets 214 is matched to produce a speed-increasing effect. One end of each of the two actuator rods 22 is connected to the two one-way bearings 212, and the other end is connected to two freely rotatable pedals 220, so that when the two actuator rods 22 swing up and down, they can drive the input shaft 210 to rotate unidirectionally through the two one-way bearings 212.

[0034] The resistance mechanism 30, mounted on the rear support 13, is driven by the two actuators 22 and generates resistance. The resistance mechanism 30 includes a flywheel 31, a fixed damper 32, a movable damper 33, and a control line 34. The flywheel 31 is made of aluminum and is attached to one end of the output shaft 215 extending out of the gearbox 21, allowing it to rotate synchronously. The fixed damper 32 is attached to the rear support 13 and has multiple parallel magnetic blocks that exert a magnetic force on one side of the flywheel 31 to form a fixed resistance. The movable damper 33 is oscillatingly attached to the rear support 13 and has multiple parallel magnetic blocks. By oscillating, it can approach or move away from the lower side of the flywheel 31 to increase or decrease the number of magnetic blocks exerting a magnetic force on the flywheel 31, thereby adjusting the resistance. One end of the control line 34 is connected to the resistance controller 121, and the other end is connected to the movable damper 33, so that the resistance controller 121 can control the swing of the movable damper 33 through the control line 34, thereby achieving the purpose of adjusting the resistance.

[0035] The linkage mechanism 40 is pivotally connected to the rear support 13 and connects the two actuating rods 22, such that when one actuating rod 22 swings down, it causes the other actuating rod 22 to swing up. The linkage mechanism 40 includes two rotating arms 41, a linkage member 42, and two connecting rods 43. One end of each of the two rotating arms 41 is pivotally connected to the rear support 13. The linkage member 42 is connected to the two rotating arms 41, such that when one rotating arm 41 swings down, it causes the other rotating arm 41 to swing up. One end of each of the two connecting rods 43 is rotatably connected to the two actuating rods 22, and the other end is rotatably connected to the other end of each of the two rotating arms 41, so that the two actuating rods 22 can drive the two rotating arms 41 to swing through the two connecting rods 43.

[0036] In this way, the user can rest both hands on the handlebars 120 and step on the two pedals 220 with both feet, assuming a running sprint posture. Then, by alternately stepping down with both feet, the two actuators 22 swing up and down, which in turn drives the flywheel 31 of the resistance mechanism 30 to rotate through the gearbox 21. By controlling the swing of the movable damper 33 and adjusting the rotational resistance of the flywheel 31 magnetically, the user can effectively train the strength and explosive power of the leg muscles during running sprints. In particular, the meshing and linkage of multiple gears in the gearbox 21 makes the movements more precise and reliable without the feeling of missing a step, thus improving the jerky movements of existing step machines. In particular, the overall structure is more streamlined. Moreover, the seat 130 on the frame 10 can be used for rest during training.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A stepper, characterized in that, include: A frame includes a base and a front bracket and a rear bracket connected to the front and rear sides of the base, and the front bracket is provided with a handle for the user to hold on with both hands. A drive mechanism includes a gearbox and two actuators. The gearbox is mounted on a rear bracket and includes an input shaft, an input gear, two one-way bearings, an output gear, and multiple connecting gear sets. The input shaft is rotatable within the gearbox. The input gear is fixedly mounted on the input shaft. The two one-way bearings are mounted on both ends of the input shaft and can drive the input shaft to rotate in one direction. The output gear is rotatably mounted within the gearbox and has an output shaft extending outside the gearbox. The multiple connecting gear sets are located between the input gear and the output gear and mesh with both of them to connect them. One end of each actuator is mounted on the two one-way bearings, and the other end is mounted on two freely rotatable pedals. A resistance mechanism, mounted on the rear support and connected to the output shaft, can be driven by the gearbox and generate resistance; and A linkage mechanism is connected between the rear support and the two actuators, which allows the actuator on one side to swing downwards in conjunction with the actuator on the other side to swing upwards.

2. The stepper as described in claim 1, characterized in that, The upper part of the rear support has a cushion for users to sit on.

3. The stepper as described in claim 1, characterized in that, Each of the multiple connecting gear sets contains a pinion and a large gear.

4. The stepper as described in claim 1, characterized in that, The gearbox, through the gear ratio matching of the input gear, the output gear, and the multiple connecting gear sets, becomes a speed-increasing gearbox capable of producing a speed-increasing effect.

5. The stepper as described in claim 1, characterized in that, The front support is equipped with a resistance controller. The resistance mechanism includes a flywheel, a movable damper, and a control line. The flywheel is connected to one end of the output shaft and can be driven by the output shaft to rotate synchronously. One end of the movable damper is oscillatingly connected to the rear support and has multiple magnetic blocks. By oscillating, it can approach or move away from the lower side of the flywheel to increase or decrease the number of magnetic blocks that exert magnetic force on the flywheel, thereby achieving the purpose of adjusting the resistance. One end of the control line is connected to the resistance controller, and the other end is connected to the movable damper, so that the resistance controller can control the oscillation amount of the movable damper through the control line.

6. The stepper as described in claim 5, characterized in that, The resistance mechanism includes a fixed damper attached to the rear support and has multiple side-by-side magnets that can exert a magnetic force on one side of the flywheel to form a fixed resistance.

7. The stepper as described in claim 1, characterized in that, The linkage mechanism includes two rotating arms, a linkage member, and two connecting rods. One end of the two rotating arms is oscillatingly connected to the rear support. The linkage member is connected to the two rotating arms so that when one rotating arm swings down, it causes the other rotating arm to swing up. One end of the two connecting rods is rotatably connected to the two actuating rods, and the other end is rotatably connected to the other end of the two rotating arms so that the two connecting rods can drive the two rotating arms to swing.

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