Stair climber

Abstract

The utility model provides a kind of stair climbing machine, including rack, motion system and resistance system, rack includes second diagonal bracing support, second diagonal bracing support includes two parallel interval arrangement slide rail, second diagonal bracing support includes the start end and termination end located in the extension direction both ends of slide rail, motion system includes two foot pedals and linkage mechanism, foot pedal respectively in the limited reciprocating sliding of slide rail, linkage mechanism is suitable for connecting two foot pedals to make two foot pedals keep reverse synchronous motion to simulate stair climbing action, resistance system includes linear elastic element and reversing device, reversing device is installed in second diagonal bracing support, reversing device is located in the middle of slide rail, linear elastic element one end is connected in foot pedal, linear elastic element other end is connected in start end, foot pedal is suitable for driving linear elastic element to pass reversing device and approach termination end.The utility model is through the layout of reversing device and symmetrical elastic element, so that foot pedal can obtain linearly changing resistance in bidirectional motion.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, and in particular relates to a stair climbing machine. Background Technology

[0002] With increasing health awareness, the demand for indoor fitness equipment is growing. Stair climbers, as a fitness device that effectively strengthens lower limbs and improves cardiovascular function, are favored by many fitness enthusiasts. Typically, elastic ropes are installed between the pedals and the lower end of the frame to create resistance. These elastic ropes usually have a one-sided tension structure, resulting in uneven resistance distribution during exercise. Furthermore, it's difficult to maintain stable resistance feedback during bidirectional movement. The pedals lose resistance as they move downwards from the middle, leading to non-linear resistance changes and posing certain safety hazards. This design also fails to simulate the mechanical characteristics of real stair climbing. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a stair-climbing machine to meet the needs of users.

[0004] To achieve the above objectives, this utility model provides a stair-climbing machine, including...

[0005] The frame includes a first and a second inclined support suitable for forming an inverted V-shaped support structure. The second inclined support includes two parallel and spaced slide rails. The second inclined support includes a starting end and a ending end located at both ends of the extension direction of the slide rails. The inverted V-shaped support structure gives the stair climber good stability and can withstand the force generated by the user's movement, making it less prone to shaking or tipping over.

[0006] The motion system includes two foot pedals and a linkage mechanism. The foot pedals slide back and forth on the slide rail to a limited extent. The linkage mechanism is adapted to connect the two foot pedals so that the two foot pedals keep moving in opposite directions in a synchronous manner to simulate climbing stairs.

[0007] The resistance system includes a linear elastic element and a reversing device. The reversing device is mounted on the second inclined support and is located in the middle of the slide rail. One end of the linear elastic element is connected to the foot pedal, and the other end of the linear elastic element is connected to the starting end.

[0008] The stair climber has an initial state in which the foot pedals are in their initial positions and the linear elastic element is in its natural state.

[0009] When the pedal moves toward the end to deviate from the initial position, the linear elastic element extends and retracts accordingly to form a changing elastic force; when the pedal moves toward the starting end to deviate from the initial position, the pedal is adapted to drive the linear elastic element around the reversing device and closer to the end, and the linear elastic element extends and retracts accordingly to form a changing elastic force, which acts on the motion system to provide a driving force to return it to the initial state.

[0010] Alternatively, the changing elastic force acts on the motion system to provide resistance that prevents the foot pedal from moving further away from the initial position.

[0011] Preferably, the resistance system includes two parallel, spaced-apart fixed seats mounted on the second diagonal brace, each fixed seat corresponding to the reversing device, so that the linear elastic element is adapted to remain taut in a direction parallel to the slide rail.

[0012] Preferably, the fixing seat is adjustablely connected to the linear elastic element to adjust its tension.

[0013] Preferably, one end of the linear elastic element is connected to an adjusting buckle, the adjusting buckle includes a U-shaped groove, the fixing seat is arranged parallel to the slide rail, the fixing seat includes a plurality of adjusting grooves and inserts arranged at intervals along its extension direction, the adjusting groove is adapted to provide movement space for the adjusting buckle so that the inserts are mated with the U-shaped groove.

[0014] Preferably, the opening of the adjustment groove is positioned downwards.

[0015] Preferably, the initial position is located in the middle of the slide rail. In the initial state, the reversing device can make part of the linear elastic device perpendicular to the slide rail, while part of the linear elastic device is parallel to the slide rail.

[0016] Preferably, the linkage mechanism includes a wire rope and a pulley assembly. The two ends of the wire rope are adapted to be connected to the foot pedal respectively. The pulley assembly includes two pulleys and a linkage beam adapted to install the pulleys. The wire rope is adapted to bypass the two pulleys to achieve reversal. The linkage beam is adapted to connect the first slide rail and the second slide rail. The linkage beam is arranged perpendicular to the first slide rail.

[0017] Preferably, the resistance system includes a reversing fixing device suitable for installing the reversing device. The reversing fixing device is in the shape of a longitudinal beam parallel to the slide rail. One end of the reversing fixing device is connected to the middle of the linkage crossbeam, and the two reversing devices are arranged opposite to each other at the other end of the reversing fixing device. It is longitudinally integrated into the middle of the slide rail, reducing the lateral space occupation and making the overall structure of the stair climber more compact, suitable for use in places with limited space such as homes and small gyms.

[0018] Preferably, the first inclined support includes two parallel, spaced-apart handrails, a first ground-contact beam connected to the bottom ends of the two handrails, and a pivot beam connected to the middle of the two handrails. The handrails provide support for the user's grip, ensuring safety during movement. The second inclined support includes a second ground-contact beam connected to the bottom ends of the two slide rails. The fixed seat is installed on the second ground-contact beam. The first and second ground-contact beams increase the contact area with the ground, further enhancing stability. The top of the slide rail is pivotally connected to the pivot beam, allowing the frame structure to maintain stability while possessing a certain degree of flexibility, facilitating the storage and adjustment of the equipment.

[0019] Preferably, the linear elastic element is an elastic rope.

[0020] Preferably, the guiding device is a reversing roller or a reversing block with a reversing arc surface, and the linear elastic element is wound around the guiding roller or the reversing arc surface.

[0021] As a preferred embodiment, an electronic product support frame is installed in the middle of the pivot beam to enhance the enjoyment of the exercise.

[0022] Preferably, the handrail includes a lower section adapted to connect to the first ground-contacting crossbeam and an upper section that is telescopically adjustable relative to the lower section, which can accommodate the needs of users of different heights and improve the comfort of use.

[0023] Preferably, the foot pedal includes a pedal and a base supporting the pedal. The base includes an inner side plate and an outer side plate clamped on the inner and outer sides of the slide rail. A plurality of rolling wheels are pivotally connected between the inner side plate and the outer side plate. The rolling wheels are rolled on the upper and lower sides of the slide rail, reducing frictional resistance during movement, making movement smoother and more stable, and improving the user's exercise experience. The linear elastic element is connected to the inner side plate.

[0024] Preferably, the inner side plate is provided with a connecting pin, the connecting pin has a connecting ring, and the linear elastic element is detachably connected to the connecting ring, or the linear elastic element is directly connected to the connecting ring.

[0025] In the initial state, the connecting pins are aligned with the reversing device.

[0026] Preferably, the slide rail includes a limiting post, which, in conjunction with the linkage beam, is suitable for limiting the sliding range of the foot pedal, ensuring the safety of movement and preventing the foot pedal from slipping off the slide rail and causing danger.

[0027] Preferably, the linear elastic element is detachably connected to the foot pedal via an elastic ring, facilitating the installation, removal, and replacement of the linear elastic element, and simplifying equipment maintenance. The elastic ring includes a buckle body, a movable rod or movable arc hinged to the buckle body, and a torsion spring adapted to keep the movable rod or movable arc in a closed state with the buckle body.

[0028] The beneficial effects of this invention are as follows: Through the reversing device and symmetrical elastic element layout, the foot pedal receives linearly varying resistance in both directions, simulating the mechanical characteristics of climbing a real ladder. During pedaling, the linear elastic element expands and contracts, generating varying elastic force that provides resistance to prevent the foot from moving further away from its initial position. Whether the foot pedal moves towards the end or the beginning, appropriate resistance is generated, meeting the needs of different users at different exercise intensities and achieving a personalized exercise experience. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of a stair-climbing machine provided by this utility model.

[0030] Figure 2 A side view of a stair-climbing machine provided by this utility model.

[0031] Figure 3 A schematic diagram of the resistance system provided by this utility model.

[0032] Figure 4 The bottom view of the second diagonal brace provided by this utility model.

[0033] Figure 5 This is an assembly diagram of the fixing seat and adjusting buckle provided by this utility model.

[0034] Figure 6 Cross-sectional view and enlarged view of the fixing seat and adjusting buckle provided by this utility model.

[0035] In the diagram: 11. First diagonal brace; 111. Handrail; 1111. Upper section of handrail; 1112. Lower section of handrail; 112. First ground contact beam; 113. Pivot beam; 114. Electronic product support frame; 12. Second diagonal brace; 121. Slide rail; 122. Limiting post; 123. Second ground contact beam; 21. Foot pedal; 211. Pedal; 212. Base; 2121. Inner side plate; 21 22. Outer side plate; 2123. Rolling wheel; 22. Linkage mechanism; 221. Wire rope; 222. Pulley assembly; 2221. Pulley; 2222. Linkage beam; 31. Linear elastic element; 32. Fixed seat; 321. Adjusting groove; 322. Insert plate; 33. Adjusting buckle; 331. U-shaped groove; 34. Connecting pin; 341. Connecting ring; 351. Reversing roller; 352. Reversing fixing device. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0038] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] like Figure 1-6The present invention provides a stair climber, including a frame, a motion system, and a resistance system. The frame includes a first diagonal support 11 comprising two parallel and spaced handrails 111, a first ground-contact beam 112 connected to the bottom of the two handrails 111, and a pivot beam 113 connected to the middle of the two handrails 111. Each handrail 111 includes a lower section 1112 adapted to connect to the first ground-contact beam 112 and an upper section 1111 adjustable relative to the lower section 1112, accommodating users of different heights and improving comfort. An electronic product support frame 114 is mounted in the middle of the pivot beam 113. The second diagonal support 12 includes two parallel and spaced slide rails 121 and a second ground-contact beam 123 connected to the bottom of the two slide rails 121. A fixing seat 32 is mounted on the second ground-contact beam 123. The top of each slide rail 121 is pivotally connected to the pivot beam 113. The second inclined support bracket 12 includes a starting end and a ending end located at both ends of the extension direction of the slide rail 121. In this embodiment, the starting end is the bottom end of the slide rail 121, and the ending end is the top end of the slide rail 121. The motion system includes two foot pedals 21 and a linkage mechanism 22. The foot pedals 21 slide back and forth on the slide rail 121 to a limited extent. The linkage mechanism 22 is adapted to connect the two foot pedals 21 so that the two foot pedals 21 maintain opposite synchronous motion to simulate climbing stairs. The resistance system includes a linear elastic element 31 and a reversing device. The linear elastic element 31 is an elastic rope, and the guide device is a reversing roller 351. The linear elastic element 31 is wound around the guide roller. The reversing device is installed on the second inclined support bracket 12 and is located in the middle of the slide rail 121. One end of the linear elastic element 31 is connected to the foot pedal 21, and the other end of the linear elastic element 31 is connected to the starting end.

[0040] The stair climber has an initial state in which foot pedal 21 is in the initial position, located in the middle of slide rail 121. The linear elastic element 31 is in its natural state. The reversing device causes part of the linear elastic element to be perpendicular to slide rail 121, while the other part is parallel to slide rail 121, resulting in minimal resistance. When the user steps on one foot pedal 21, it moves towards the starting end, deviating from the initial position. This causes the foot pedal 21 to move the linear elastic element 31 around the reversing device and closer to the ending end. The linear elastic element 31 then extends and retracts, creating a changing elastic force. The other foot pedal 21 then moves towards the ending end, deviating from its initial position, again extending and retracting, creating a changing elastic force. The changing elastic force of both foot pedals 21 acts on the motion system to provide the driving force to return it to the initial state. Alternatively, the changing elastic force acts on the motion system to provide resistance that prevents the foot pedals 21 from moving further away from the initial position.

[0041] In this embodiment, the resistance system includes two parallel, spaced-apart fixed seats 32 mounted on the second inclined support 12. Each fixed seat 32 corresponds to a reversing device, partially allowing the linear elastic element 31 to maintain tension in a direction parallel to the slide rail 121. The fixed seats 32 are adjustablely connected to the linear elastic element 31 to adjust its tension. Specifically, the fixed seats 32 are arranged parallel to the slide rail 121 and include several adjusting grooves 321 and inserts 322 spaced apart along their extension direction. The openings of the adjusting grooves 321 face downwards to prevent debris from falling in. One end of the linear elastic element 31 is connected to an adjusting buckle 33, which includes a U-shaped groove 331. The adjusting grooves 321 are adapted to provide movement space for the adjusting buckle 33 so that the inserts 322 can engage with the U-shaped groove 331.

[0042] In this embodiment, the foot pedal 21 includes a pedal 211 and a base 212 supporting the pedal 211. The base 212 includes an inner side plate 2121 and an outer side plate 2122 clamped to the inner and outer sides of the slide rail 121. A plurality of rolling wheels 2123 are pivotally connected between the inner side plate 2121 and the outer side plate 2122. Two rolling wheels 2123 are rolled on the upper side of the slide rail 121, and one rolling wheel 2123 is rolled on the lower side of the slide rail 121, reducing frictional resistance during movement, making the movement smoother and more stable, and improving the user's exercise experience. The inner side plate 2121 is provided with a connecting pin 34, and the connecting pin 34 has a connecting ring 341. The linear elastic element 31 is directly connected to the connecting ring 341. In the initial state, the connecting pin 34 is aligned with the reversing device.

[0043] In this embodiment, the linkage mechanism 22 includes a steel wire rope 221 and a pulley assembly 222. The two ends of the steel wire rope 221 are adapted to connect to the foot pedals 21 respectively. The pulley assembly 222 includes two pulleys 2221 and a linkage beam 2222 adapted to mount the pulleys 2221. The steel wire rope 221 is adapted to bypass the two pulleys 2221 to achieve reversing. The linkage beam 2222 is adapted to connect the first slide rail 121 and the second slide rail 121, and is perpendicular to the first slide rail 121. The resistance system includes a reversing fixing device 352 adapted to mount the reversing devices. The reversing fixing device 352 is a longitudinal beam parallel to the slide rail 121. One end of the reversing fixing device 352 is connected to the middle of the linkage beam 2222, and two reversing devices are arranged opposite to each other at the other end of the reversing fixing device 352. It is longitudinally integrated into the middle of the slide rail 121, reducing lateral space occupation and making the overall structure of the stair climber more compact, suitable for use in homes, small gyms, and other places with limited space. The slide rail 121 includes a limiting post 122, which, together with the linkage beam 2222, is suitable for limiting the sliding range of the foot pedal 21, ensuring the safety of the movement and preventing the foot pedal 21 from sliding off the slide rail 121 and causing danger.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A stair-climbing machine, characterized in that, include The frame includes a first and a second inclined support suitable for forming an inverted V-shaped support structure. The second inclined support includes two parallel and spaced slide rails and includes a starting end and a terminating end located at both ends of the extension direction of the slide rails. The motion system includes two foot pedals and a linkage mechanism. The foot pedals slide back and forth on the slide rail to a limited extent. The linkage mechanism is adapted to connect the two foot pedals so that the two foot pedals keep moving in opposite directions in a synchronous manner to simulate climbing stairs. The resistance system includes a linear elastic element and a reversing device. The reversing device is mounted on the second inclined support and is located in the middle of the slide rail. One end of the linear elastic element is connected to the foot pedal, and the other end of the linear elastic element is connected to the starting end. The stair climber has an initial state in which the foot pedals are in their initial positions and the linear elastic element is in its natural state. When the pedal moves toward the end to deviate from the initial position, the linear elastic element extends and retracts accordingly to form a changing elastic force; when the pedal moves toward the starting end to deviate from the initial position, the pedal is adapted to drive the linear elastic element around the reversing device and closer to the end, and the linear elastic element extends and retracts accordingly to form a changing elastic force, which acts on the motion system to provide a driving force to return it to the initial state.

2. The stair-climbing machine according to claim 1, characterized in that, The resistance system includes two parallel, spaced-apart fixed seats mounted on the second diagonal brace, each fixed seat corresponding to the reversing device, so that the linear elastic element is adapted to remain taut in a direction parallel to the slide rail.

3. A stair-climbing machine according to claim 2, characterized in that, The mounting base is adjustablely connected to the linear elastic element to adjust its tension.

4. A stair-climbing machine according to claim 3, characterized in that, One end of the linear elastic element is connected to an adjusting buckle, the adjusting buckle includes a U-shaped groove, the fixing seat is arranged parallel to the slide rail, the fixing seat includes a plurality of adjusting grooves and inserts arranged at intervals along its extension direction, the adjusting groove is adapted to provide movement space for the adjusting buckle so that the inserts are inserted into the U-shaped groove.

5. A stair-climbing machine according to claim 1, characterized in that, The initial position is located in the middle of the slide rail. In the initial state, the reversing device can make part of the linear elastic device perpendicular to the slide rail, while part of the linear elastic device is parallel to the slide rail.

6. A stair-climbing machine according to claim 3, characterized in that, The linkage mechanism includes a wire rope and a pulley assembly. The two ends of the wire rope are adapted to be connected to the foot pedal respectively. The pulley assembly includes two pulleys and a linkage beam adapted to install the pulleys. The wire rope is adapted to bypass the two pulleys to achieve reversal. The linkage beam is adapted to connect the first slide rail and the second slide rail. The linkage beam is arranged perpendicular to the first slide rail. The resistance system includes a reversing fixing device suitable for installing reversing devices. The reversing fixing device is in the shape of a longitudinal beam parallel to the slide rail. One end of the reversing fixing device is connected to the middle of the linkage crossbeam, and the two reversing devices are arranged opposite to each other at the other end of the reversing fixing device.

7. A stair-climbing machine according to claim 3, characterized in that, The first diagonal brace includes two parallel and spaced handrails, a first ground-contact beam connected to the bottom ends of the two handrails, and a pivot beam connected to the middle of the two handrails; the second diagonal brace includes a second ground-contact beam connected to the bottom ends of the two slide rails, the fixed seat is installed on the second ground-contact beam, and the top end of the slide rail is pivotally connected to the pivot beam.

8. A stair-climbing machine according to claim 7, characterized in that, At least one of the following conditions must be met: The linear elastic element is an elastic rope; The guiding device is a reversing roller or a reversing block with a reversing arc surface, and the linear elastic element is wound around the guiding roller or the reversing arc surface; An electronic product support frame is installed in the middle of the pivot beam; The handrail includes a lower section adapted to connect to the first ground-contacting crossbeam and an upper section that is telescopically adjustable relative to the lower section.

9. A stair-climbing machine according to claim 1, characterized in that, The foot pedal includes a pedal and a base supporting the pedal. The base includes an inner side plate and an outer side plate clamped on the inner and outer sides of the slide rail. A plurality of rolling wheels are pivotally connected between the inner side plate and the outer side plate. The rolling wheels are rotatably disposed on the upper and lower sides of the slide rail. The linear elastic element is connected to the inner side plate.

10. A stair-climbing machine according to claim 9, characterized in that, The inner side plate is provided with a connecting pin, the connecting pin has a connecting ring, and the linear elastic element is detachably connected to the connecting ring, or the linear elastic element is directly connected to the connecting ring.

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