Treadmill with adjustable arc-shaped motion trail

Abstract

The utility model provides a treadmill with an adjustable arc-shaped motion trail. The treadmill comprises a framework, two swing pipes, two pedal pipes, two pedals, a resistance device, two cranks, two push rods, two sliding pipes and a motion trail adjusting device. Through the connection relation of the components, the motion trail of the pedal is in an arc shape. The motion trail adjusting device is used for adjusting the path length and inclination of the arc-shaped motion trail.

Description

Technical Field

[0001] This utility model relates to a stepper with an adjustable arc-shaped motion trajectory. Background Technology

[0002] A stepper is a type of exercise equipment that can increase heart rate, burn calories, and improve cardiac endurance.

[0003] In a traditional stepper design, the user stands on two pedals with predetermined resistance, applying force with both feet to alternately lift the pedals. The footwork resembles climbing a staircase, thus exercising the leg and gluteal muscles. Compared to a treadmill, a stepper exerts less impact on the legs, but care must be taken to avoid knee injuries.

[0004] Patent I587889B, entitled "Motion Device," discloses a stepper with an elliptical motion trajectory. The structure of this stepper is somewhat complex.

[0005] For known stepper technologies, see also: Patent I458519, entitled "Adjustable Stepper"; Patent I442955, entitled "Stepper"; and Patent M391978U1, entitled "Linear Climbing Machine", etc. Utility Model Content

[0006] This utility model content is provided to introduce selected utility model concepts in a simplified form, which will be further described in the detailed description below. This utility model content and the content of the prior art are not intended to identify key or essential aspects of the claimed target. Furthermore, this utility model content is not intended to be used to help confirm the scope of the claimed target.

[0007] In one aspect of this utility model, a stepper includes a frame, two swing tubes, two foot pedals, two pedals, a resistance device, two cranks, two push rods, two sliding tubes, and a motion trajectory adjustment device. The frame includes a base and a main frame, the base being located above the ground and the main frame above the base. Two swing tubes are located on the left and right sides of the main frame, respectively. The first end of each swing tube is pivotally connected to a first shaft on the main frame, and each swing tube also has a handrail extending upwards from its first end for the user to hold. Two foot pedals correspond to the two swing tubes, the first end of each foot pedal is pivotally connected to the second end of the corresponding swing tube, and a roller is pivotally mounted on the inner side of each foot pedal. Two pedals correspond to the two foot pedals, each pedal connected to the second end of the corresponding foot pedal. The resistance device is disposed on the main frame, includes a rotating wheel to provide operating resistance, and has a resistance axis. Two cranks are located on both sides of the resistance device, the first end of each crank being pivotally connected to the resistance axis. Two push rods correspond to two cranks and two rocker tubes. Each push rod has a first end pivotally connected to the second end of the corresponding crank, and the second end of each push rod is pivotally connected to the corresponding rocker tube to a second shaft. Two sliding tubes correspond to two foot pedal tubes. The first ends of the two sliding tubes are pivotally connected to the base, and a roller of each foot pedal tube is slidably connected to the corresponding sliding tube. Each pedal has an arc-shaped motion trajectory. The first end of the motion trajectory adjustment device is pivotally connected to the base, and the second end of the motion trajectory adjustment device is pivotally connected to the second ends of the two sliding tubes. The motion trajectory adjustment device can adjust its linear length, thereby changing the length of the arc-shaped motion trajectory and its angle relative to the base.

[0008] In one embodiment of the present invention, the motion trajectory adjustment device includes a motor, a screw, and a sleeve. The sleeve has an internal thread that engages with the screw. The motor is used to drive the screw to rotate, causing the sleeve to move along the axial direction of the screw.

[0009] In one embodiment of this utility model, one end of the screw is pivotally connected to the base of the skeleton, one end of the sleeve is pivotally connected to the crossbar, and the first ends of the two push rods are connected to the crossbar.

[0010] In one embodiment of this utility model, the horizontal height of the second shaft is higher than the horizontal height of the axis at which the sleeve is pivotally connected to the crossbar.

[0011] In another aspect of this utility model, a stepper includes a frame, two swing tubes, two lower swing tubes, two foot pedals, two pedals, a resistance device, two cranks, two push rods, two sliding tubes, and a motion trajectory adjustment device. Unlike the aforementioned stepper, this stepper also has two lower swing tubes corresponding to the two swing tubes and two foot pedals. The first end of each lower swing tube is pivotally connected to the second end of the corresponding swing tube. The first end of each foot pedal is pivotally connected to the second end of the corresponding lower swing tube, and a roller is pivotally mounted on the inner side of each foot pedal. The two push rods correspond to the two cranks, two swing tubes, and two lower swing tubes. The first end of each push rod is pivotally connected to the second end of the corresponding crank, and the second end of each push rod is pivotally connected to the second end of the corresponding swing tube and the first end of the corresponding lower swing tube. The two sliding tubes correspond to the two foot pedals, the first ends of the two sliding tubes are pivotally connected to a base, the rollers of each foot pedal are slidably connected to the corresponding sliding tube, and each pedal has an arc-shaped motion trajectory. The first end of the motion trajectory adjustment device is pivotally connected to the base, and the second end of the motion trajectory adjustment device is pivotally connected to the second ends of the two sliding tubes. The motion trajectory adjustment device can adjust its linear length, thereby changing the length of the arc motion trajectory and the angle relative to the base.

[0012] In one embodiment of the present invention, the motion trajectory adjustment device includes a motor, a screw, and a sleeve. The sleeve has an internal thread that engages with the screw. The motor is used to drive the screw to rotate, causing the sleeve to move along the axial direction of the screw. One end of the screw is pivotally connected to the base of the frame, and one end of the sleeve is pivotally connected to a crossbar. The first ends of the two push rods are connected to the crossbar.

[0013] In one embodiment of the present invention, each of the lower swing tubes further includes a swing stroke limiting mechanism located between the pivot and the lower swing tube, thereby limiting the pivot angle of the lower swing tube.

[0014] In one embodiment of the present invention, the swing stroke limiting mechanism includes a cushioning pad.

[0015] In one embodiment of the present invention, the swing stroke limiting mechanism includes a hydraulic rod, the first end of which is pivotally connected to a first connecting structure connected to the pivot, and the second end of which is pivotally connected to a second connecting structure connected to the lower swing tube.

[0016] In one embodiment of the present invention, the swing stroke limiting mechanism includes a spring, the first end of which is connected to a first connecting structure connected to the pivot, and the second end of which is connected to a second connecting structure connected to the lower swing tube.

[0017] The stepper provided by this utility model is smooth to step on, has an arc-shaped movement trajectory that meets the needs of the human body, and has a wide range of stride adjustment, making it suitable for users of various body types. Attached Figure Description

[0018] The following description, with reference to the accompanying drawings, outlines non-limiting and non-exhaustive embodiments of the disclosed technology, including preferred embodiments, wherein, unless otherwise stated, the same symbols denote the same components or parts in all views.

[0019] Figure 1 This is a perspective view of a stepper machine according to the first embodiment of the present invention;

[0020] Figure 2 This is a side view of the stepper machine according to the first embodiment of the present invention;

[0021] Figure 3 According to Figure 1 A three-dimensional view of the stepper machine from another perspective;

[0022] Figure 4 for Figures 1 to 3 The stepper shown is a partially enlarged side view of its first operating state.

[0023] Figure 5 for Figures 1 to 3 The stepper shown is a partially enlarged side view of its second operating state.

[0024] Figure 6 This is a perspective view of a stepper machine according to the second embodiment of the present invention;

[0025] Figure 7 for Figure 6 A partial perspective view of a variant embodiment of the stepper shown;

[0026] Figure 8 for Figure 6 A partial perspective view of another variant embodiment of the stepper shown;

[0027] Figure 9 for Figure 6 A partial perspective view of another variation of the stepper shown.

[0028] Figure label:

[0029] 1. Stepper

[0030] 2 Stepper

[0031] 10. Skeleton

[0032] 11. Swing tube

[0033] 12 foot pedals

[0034] 13. Resistance device

[0035] 14 Crank

[0036] 15 Putter

[0037] 16 Sliding tube

[0038] 17 Pedals

[0039] 18. Motion trajectory adjustment device

[0040] 19 Lower oscillating tube

[0041] 20 crossbars

[0042] 21 First Axis

[0043] 22 Second Axis

[0044] 23 Third Axis

[0045] 24 Fourth Axis

[0046] 25 Pivot

[0047] 26 Fifth Axis

[0048] 30 Operation Interface

[0049] 31 First connection structure

[0050] 32 Second connection structure

[0051] 40 Swing stroke limiting mechanism

[0052] 101 Base

[0053] 102 Mainframe

[0054] 103 riser

[0055] 110 Handrail

[0056] 120 rollers

[0057] 130 Resistance axis

[0058] 132 Rotary Wheel

[0059] 134 Flywheel

[0060] 181 motor

[0061] 182 screw

[0062] 183 Sleeve

[0063] 202 Connecting Plate

[0064] P1 Motion Trajectory

[0065] P2 Motion Trajectory Detailed Implementation

[0066] Embodiments will now be described more fully with reference to the accompanying drawings, which form part of this document and illustrate specific exemplary embodiments by way of illustration. These embodiments have been disclosed in sufficient detail to enable those skilled in the art to practice the present invention. However, these embodiments may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Therefore, the following detailed description is not intended to be limiting.

[0067] Figure 1 It is a 3D image. Figure 2 This is a side view. Figure 3 This is a perspective view showing the stepper 1 of the first embodiment of the present invention. Its main components include a frame 10, two swing tubes 11, two foot pedal tubes 12, a resistance device 13, two cranks 14, two push rods 15, two sliding tubes 16, two pedals 17, a motion trajectory adjustment device 18, and an operation interface 30.

[0068] See Figures 1 to 3 In this embodiment, the frame 10 includes, but is not limited to, a base 101 and a main frame 102. The base 101 is located on the ground, and the main frame 102 is located above the base 101. Two swing tubes 11 and two foot pedals 12 are respectively located on the left and right sides of the main frame 102. Each swing tube 11 and foot pedal 12 has a first end and a second end. The two foot pedals 12 correspond to the two swing tubes 11 and the two pedals 17. The first end of each swing tube 11 is pivotally connected to the main frame 102 to a first shaft 21. Each swing tube 11 also has an armrest 110 extending upward from its first end for the user to hold (the armrest 110 is integrated with the swing tube 11). The second end of each swing tube 11 is pivotally connected to the first end of the corresponding foot pedal 12, and the second end of the corresponding foot pedal 12 is connected to a corresponding pedal 17. In addition, a roller 120 is pivotally provided on the inner side of each foot pedal 12.

[0069] refer to Figures 1 to 3 In addition, in the illustrated embodiment, a riser 103 may be provided above the main frame 102, with one end of the riser 103 connected to the main frame 102 and the other end having an operation interface 30 for user operation or control.

[0070] refer to Figures 1 to 3Two cranks 14 are located on either side of the resistance device 13. The resistance device 13 provides operating resistance and has at least a wheel 132 with a resistance axis 130. Two cranks 14 are located on either side of the resistance device 13, and two push rods 15 correspond to the two cranks 14 and two rocker tubes 11. Each crank 14 and each push rod 15 has a first end and a second end. The first end of each crank 14 is pivotally connected to the resistance axis 130, the second end of each crank 14 is pivotally connected to the first end of the corresponding push rod 15, and the second end of each push rod 15 is pivotally connected to the corresponding rocker tube at a second shaft 22. The first shaft 21 is at a higher horizontal level than the second shaft 22.

[0071] refer to Figures 1 to 3 When the user's feet are on the left and right pedals 17, the resistance device 13 provides resistance to the user. The value of this resistance can be controlled via the operation interface 30. In the illustrated embodiment, the pulley 132 is a belt pulley, and the resistance device 13 also includes a flywheel 134, which is connected to the pulley 132 via a belt (not shown). The resistance shaft 130 of the pulley 132 may have a double-sided bearing (not shown) connecting the first ends of the two cranks 14. The user's pedaling operation drives the pulley 132 via the cranks 14, and the pulley 132 drives the flywheel 134 to rotate.

[0072] refer to Figures 1 to 3 Two sliding tubes 16 correspond to two foot pedal tubes 12. The first end of each sliding tube 16 is pivotally connected to the base 101 to the third shaft 23. The roller 120 of each foot pedal tube 12 is slidably connected to the corresponding sliding tube 16. In the illustrated embodiment, the sliding tube 16 has an arc-shaped profile. With the above configuration, the movement trajectory of each pedal 17 is arc-shaped.

[0073] refer to Figures 1 to 3 The first end of the motion trajectory adjustment device 18 is pivotally connected to the base 101 and the fourth shaft 24, and the second end of the motion trajectory adjustment device 18 is pivotally connected to the second ends of the two sliding tubes 16. In the illustrated embodiment, the motion trajectory adjustment device 18 may include, but is not limited to, a motor 181, a screw 182, and a sleeve 183. The motor 181 drives the screw 182 to rotate, and the sleeve 183 has an internal thread that engages with the screw 182. When the motor 181 drives the screw 182 to rotate clockwise or counterclockwise, the sleeve 183 displaces along the axial direction of the screw 182, thereby changing the linear length of the motion trajectory adjustment device 18. In the illustrated embodiment, the second ends of the two sliding tubes 16 are connected to both ends of a crossbar 20, and the crossbar 20 is pivotally connected to the sleeve 183 and the fifth shaft 26 via two connecting plates 202 fixed thereto. Preferably, to obtain better driving force and smoother operation, the horizontal height of the second shaft 22 is higher than the horizontal height of the fifth shaft 26.

[0074] Figure 4 for Figures 1 to 3The stepper shown is a partially enlarged side view of its first operating state. Figure 4 As shown, when motor 181 drives screw 182, sleeve 183 moves downward along the axis of screw 182. Sleeve 183 drags two sliding tubes 16 through crossbar 20, making the angle between sliding tubes 16 and the horizontal direction smaller. At this time, the angle between the arc-shaped motion trajectory P1 of pedal 17 and the horizontal direction is at its minimum, and the user's stride (the length of the arc-shaped motion trajectory P1) is at its minimum in this state.

[0075] Figure 5 for Figures 1 to 3 The stepper shown is a partially enlarged side view of its operation in the second state. Figure 5 As shown, when motor 181 drives screw 182, sleeve 183 moves upward along the axis of screw 182. Sleeve 183 pushes two sliding tubes 16 through crossbar 20, increasing the angle between sliding tubes 16 and the horizontal direction. At this time, the angle between the center line of the arc-shaped motion trajectory P2 of pedal 17 and the horizontal direction is at its maximum, and the user's stride (length of arc-shaped motion trajectory P2) is at its maximum in this state.

[0076] See Figure 4 and Figure 5 Users can control the motion trajectory adjustment device 18 through the operation interface 30 to adjust the slope and stride of the arc motion trajectory to suit themselves.

[0077] Figure 6 This is a perspective view of a stepper 2 according to another embodiment of the present invention. Figures 1 to 5 The stepper 1 shown differs from the stepper 2 in that it also has two lower rocker tubes 19, corresponding to two rocker tubes 11 and two foot pedal tubes 12. The first end of each lower rocker tube 19 is pivotally connected to the second end of the corresponding rocker tube 11 via a pivot 25. The first end of each foot pedal tube 12 is pivotally connected to the second end of the corresponding lower rocker tube 19, and a roller 120 is pivotally mounted on the inner side of each foot pedal tube 12. Two push rods 15 correspond to two cranks 14, two rocker tubes 11, and two lower rocker tubes 19. The first end of each push rod 15 is pivotally connected to the second end of the corresponding crank 14 (the first end of the crank 14 is pivotally connected to the resistance shaft 130), and the second end of each push rod 15 is pivotally connected to the second end of the corresponding rocker tube 11 and the first end of the corresponding lower rocker tube 19 via a pivot 25. The remaining details of this embodiment are the same as those in the previous embodiment. Figures 1 to 5The illustrated embodiment is the same. For example, two sliding tubes 16 correspond to two foot pedal tubes 12. The first ends of the two sliding tubes 16 are pivotally connected to the base. The rollers 120 of each foot pedal tube 12 are slidably connected to the corresponding sliding tube 16. Each pedal 17 is connected to the second end of the corresponding foot pedal tube 12 and has an arc-shaped motion trajectory. The first end of the motion trajectory adjustment device 18 is pivotally connected to the base 101, and the second end of the motion trajectory adjustment device 18 is pivotally connected to the second ends of the two sliding tubes 16. The motion trajectory adjustment device 18 can adjust its linear length, thereby changing the length of the arc-shaped motion trajectory and its angle relative to the base 101.

[0078] exist Figure 6 In this embodiment, the lower swing tube 19 will swing autonomously around the pivot 25. Figures 7 to 9 show Figure 6 The three variations of the stepper 2 shown in these embodiments further include a swing travel limiting mechanism 40 located between the pivot 25 and the lower swing tube 19, thereby limiting the pivot angle of the lower swing tube 19.

[0079] See Figure 7 As shown, the swing stroke limiting mechanism 40 is a buffer pad located between the pivot 25 and the lower swing tube 19.

[0080] See Figure 8 As shown, the swing stroke limiting mechanism 40 is a hydraulic rod. The first end of the hydraulic rod is pivotally connected to a first connecting structure 31 connected to a pivot 25, and the second end of the hydraulic rod is pivotally connected to a second connecting structure 32 connected to a lower swing tube 19.

[0081] See Figure 8 As shown, the swing stroke limiting mechanism 40 is a spring. The first end of the spring is connected to a first connecting structure 31 connected to the pivot 25, and the second end of the spring is connected to a second connecting structure 32 connected to the lower swing tube 19.

[0082] The stepper provided by this utility model has a smooth stepping experience, an arc-shaped movement trajectory that meets the needs of the human body, and a wide range of stride adjustment, making it suitable for users of various body types.

[0083] As can be understood from the foregoing, specific embodiments of the present invention have been described herein for illustrative purposes; however, various modifications may be made without departing from the scope of the present invention. Therefore, the present invention is not limited except as provided in the appended patent claims.

[0084] Although the technology in this case has been described using terms specific to certain structures and materials, it should be understood that the utility model as defined in the appended claims is not necessarily limited to the specific structures and materials described herein. Rather, specific embodiments are described as forms for implementing the claimed utility model. Because many embodiments of this utility model can be implemented without departing from the spirit and scope of this utility model, it falls within the scope of the appended claims.

Claims

1. A stepper, characterized in that, include: The frame includes a base and a main frame, the base being located above the ground and the main frame being located above the base; Two swing tubes are located on the left and right sides of the main frame, respectively. The first end of each swing tube is pivotally connected to the main frame to the first axis. Each swing tube also has a handrail extending upward from its first end for the user to hold. Two foot pedal tubes, corresponding to two swing tubes, with the first end of each foot pedal tube pivotally connected to the second end of the corresponding swing tube, and a roller pivotally mounted on the inner side of each foot pedal tube; Two pedals, corresponding to two foot tubes, each pedal connected to the second end of the corresponding foot tube; A resistance device, disposed on the main frame, includes a wheel to provide operating resistance and has a resistance axis; Two cranks are located on both sides of the resistance device, and the first end of each crank is pivotally connected to the resistance shaft. Two push rods, corresponding to the two cranks and the two rocker tubes, each push rod having a first end pivotally connected to the second end of the corresponding crank, and the second end of each push rod pivotally connected to the corresponding rocker tube to the second shaft; Two sliding tubes, corresponding to two foot pedal tubes, with the first end of each sliding tube pivotally connected to the base. A roller on each foot pedal tube is slidably connected to the corresponding sliding tube. Each pedal has an arc-shaped motion trajectory. A motion trajectory adjustment device, the first end of which is pivotally connected to the base, and the second end of which is pivotally connected to the second ends of the two sliding tubes, the motion trajectory adjustment device can adjust its linear length, thereby changing the path length of the arc-shaped motion trajectory and its angle relative to the base.

2. The stepper as described in claim 1, characterized in that, The motion trajectory adjustment device includes a motor, a screw, and a sleeve with an internal thread that engages with the screw. The motor drives the screw to rotate, causing the sleeve to move along the axial direction of the screw.

3. The stepper machine as described in claim 2, characterized in that, One end of the screw is pivotally connected to the base of the frame, one end of the sleeve is pivotally connected to the crossbar, and the first ends of the two push rods are connected to the crossbar.

4. The stepper as described in claim 3, characterized in that, The horizontal height of the second shaft is higher than the horizontal height of the axis at which the sleeve is pivotally connected to the crossbar.

5. A stepper machine, characterized in that, include: The frame includes a base and a main frame, the base being located above the ground and the main frame being located above the base; Two swing tubes are located on the left and right sides of the main frame, respectively. The first end of each swing tube is pivotally connected to the main frame to the first axis. Each swing tube also has a handrail extending upward from its first end for the user to hold. Two lower swing tubes, corresponding to the two swing tubes, with the first end of each lower swing tube pivotally connected to the second end of the corresponding swing tube; Two foot pedal tubes, corresponding to two lower swing tubes, with the first end of each foot pedal tube pivotally connected to the second end of the corresponding lower swing tube, and a roller pivotally mounted on the inner side of each foot pedal tube; Two pedals, corresponding to two foot tubes, each pedal connected to the second end of the corresponding foot tube; A resistance device, disposed on the main frame, includes a wheel that provides operating resistance and has a resistance axis; Two cranks are located on both sides of the resistance device, and the first end of each crank is pivotally connected to the resistance shaft. Two push rods, corresponding to the two cranks, the two rocker tubes, and the two lower rocker tubes, each push rod having a first end pivotally connected to the second end of the corresponding crank, and the second end of each push rod pivotally connected to the second end of the corresponding rocker tube and the first end of the corresponding lower rocker tube at a pivot. Two sliding tubes, corresponding to two foot pedal tubes, the first end of the two sliding tubes is pivotally connected to the base, the roller of each foot pedal tube is slidably connected to the corresponding sliding tube, and each pedal has an arc-shaped motion trajectory; as well as A motion trajectory adjustment device, the first end of which is pivotally connected to the base, and the second end of which is movably connected to the second ends of the two sliding tubes, the motion trajectory adjustment device can adjust its linear length, thereby changing the path length of the arc-shaped motion trajectory and its angle relative to the base.

6. The stepper as described in claim 5, characterized in that, The motion trajectory adjustment device includes a motor, a screw, and a sleeve. The sleeve has an internal thread that engages with the screw. The motor drives the screw to rotate, causing the sleeve to move along the axial direction of the screw. One end of the screw is pivotally connected to the base of the frame, and one end of the sleeve is pivotally connected to a crossbar. The first ends of the two push rods are connected to the crossbar.

7. The stepper as described in claim 5, characterized in that, Each of the lower swing tubes further includes a swing stroke limiting mechanism located between the pivot and the lower swing tube, thereby limiting the pivot angle of the lower swing tube.

8. The stepper machine as described in claim 7, characterized in that, The swing travel limiting mechanism includes a cushioning pad.

9. The stepper as described in claim 7, characterized in that, The swing stroke limiting mechanism includes a hydraulic rod, the first end of which is pivotally connected to a first connecting structure connected to the pivot, and the second end of which is pivotally connected to a second connecting structure connected to the lower swing tube.

10. The stepper as described in claim 7, characterized in that, The swing stroke limiting mechanism includes a spring, the first end of which is connected to a first connecting structure connected to the pivot, and the second end of which is connected to a second connecting structure connected to the lower swing tube.

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