Knee-protecting type stair climbing device

Abstract

The utility model provides a kneecap type stair climbing device which solves the technical problem that in the prior art, a pedal in a stair climbing device can hurt knees when impacted. A kneecap type stair climbing device comprises a machine frame, pedals are arranged on the machine frame in a sliding mode, the pedals comprise the left pedal and the right pedal, the left pedal and the right pedal are connected through a connecting rope, and the left pedal and the right pedal are driven by the connecting rope to move in the opposite directions. A left buffering assembly is arranged between the left pedal and the rack and comprises a left pulley assembly and a left elastic rope wound around the left pulley assembly. One end of the left elastic rope is connected with the left pedal, and the other end of the left elastic rope is connected with the rack; according to the utility model, the elastic rope is used for damping to reduce knee pressure and relieve impact when the pedal is started and stopped. The combination of the pulley and the elastic rope ensures the stability and balance of pedal movement, and reduces the risk of falling or spraining. The symmetrical pedal design and the elastic rope connection mode promote body balance and enhance the muscle coordination of the left and right legs.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, and particularly relates to a knee-protection type stair climber. Background Art

[0002] A stair climber is a piece of fitness equipment that simulates stair climbing, helping users achieve aerobic exercise and strengthen their lower limbs. This type of equipment typically includes two pedals that users alternately pedal, simulating the motion of climbing stairs. The equipment is designed to strengthen lower limb muscle groups through repetitive pedaling, while also boosting cardiopulmonary function, significantly improving calorie burning and cardiovascular health. The alternating pedaling motion not only exercises the major leg muscles, such as the quadriceps, hamstrings, and calves, but also engages the stabilizing forces of the hips and core.

[0003] However, existing stair climbing machines can generate significant impact forces when the pedals suddenly stop and start at their highest and lowest points. Without proper cushioning, these forces can easily cause additional stress and potential damage to the knee joints. As a key joint in the lower limbs, the knee is particularly vulnerable to the weight and impact of exercise, especially during repetitive, high-intensity exercise. Utility Model Content

[0004] The utility model provides a knee-protection type stair climber, which aims to solve the technical problem in the prior art that the knees may be damaged by the impact of pedals in stair climbers.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A knee-pad stair climber comprises a frame, on which pedals are slidably mounted, the pedals comprising a left pedal and a right pedal, the left pedal and the right pedal being connected by a connecting rope, the left pedal and the right pedal being driven by the connecting rope to move in opposite directions.

[0007] A left buffer assembly is provided between the left pedal and the frame, and a right buffer assembly is provided between the right pedal and the frame. The left buffer assembly includes a left pulley assembly and a left elastic rope passing around the left pulley assembly; the right buffer assembly includes a right pulley assembly and a right elastic rope passing around the right pulley, one end of the left elastic rope is connected to the left pedal and the other end is connected to the frame, and one end of the right elastic rope is connected to the right pedal and the other end is connected to the frame.

[0008] Preferably, the left pulley assembly includes two upper left pulleys, and a left channel is formed between the two upper left pulleys for the left elastic rope to pass through; the right pulley assembly includes two upper right pulleys, and a right channel is formed between the two upper right pulleys for the right elastic rope to pass through.

[0009] Based on the above solution, by providing two upper pulleys with sliding directions opposite to each other, the elastic cord continuously provides stable tension through the pulley system as the pedals move up or down. When the pedals reach the top or bottom of their motion trajectory, the pulleys sliding in opposite directions smoothly transfer the elastic cord tension, reducing the impact on the knees caused by sudden stops or changes in motion direction. Furthermore, the bilaterally symmetrical design helps maintain the stability of the stair climber, reducing tilt or deviation caused by uneven loads or different friction. By passing the elastic cord through the pulley assembly, the mechanical advantage of the pulleys can be utilized to reduce the force required to directly pull the elastic cord, thereby improving the efficiency of the stair climbing exercise.

[0010] In a preferred embodiment, a left lower pulley and a right lower pulley are provided on the frame, the left elastic rope passes over the left lower pulley from the bottom and is connected to the frame, and the right elastic rope passes over the right lower pulley from the bottom and is connected to the frame.

[0011] Based on the above solution, the elastic rope wraps around the pulley from the bottom, which increases the length of the elastic rope, thereby increasing the buffering capacity, which can reduce the direct impact on the knees during climbing and reduce the risk of knee injuries. The increased buffering capacity also makes the exercise process smoother and more comfortable, reducing the discomfort caused by sudden impact.

[0012] In a preferred embodiment, a left female connector is provided at one end of the left elastic cord connected to the frame, and a plurality of left sub-connectors are provided on the frame; the left female connector adjusts the tightness of the left elastic cord by connecting to different left sub-connectors;

[0013] One end of the right elastic rope connected to the frame is provided with a right female connection part, and the frame is provided with a plurality of right sub-connections; the right female connection part adjusts the tightness of the right elastic rope by being connected with different right sub-connections.

[0014] Based on this solution, the elastic cord's tightness can be adjusted via the left female and male connectors. Users can tailor the elastic cord's cushioning capacity to their individual exercise needs and fitness level, reducing the direct impact of the pedals on the knees and the risk of knee injuries during exercise. Furthermore, the appropriate elastic cord tension prevents excessive pedal movement during exercise, reducing the risk of falls or sprains caused by unstable pedals. Furthermore, the left-right symmetrical arrangement helps maintain balance and avoids injuries caused by left-right power imbalance.

[0015] In a preferred embodiment, the left female connector is a left hook, the left sub-connecting part is a left slot, the right female connector is a right hook, and the right sub-connecting part is a right slot; the left elastic rope is connected to the frame by being hung together with the left slot through the left hook, and the right elastic rope is connected to the frame by being hung together with the right slot through the right hook.

[0016] Based on the above solution, the user can easily adjust the tightness of the elastic rope by moving the position of the hook in the slot, thereby adjusting the resistance of the movement, and the cooperation between the hook and the slot can provide a stable connection, reducing sliding or loosening during use.

[0017] In a preferred embodiment, a plurality of the left sub-connecting portions are arranged along the sliding direction of the left pedal, and a plurality of the right sub-connecting portions are arranged along the sliding direction of the right pedal.

[0018] Based on the above solution, the arrangement of multiple connection parts allows the user to adjust the tightness of the elastic rope within a smaller step length. The user can choose different connection parts according to personal exercise preferences and physical fitness level to achieve different exercise intensities during exercise and improve exercise efficiency.

[0019] In a preferred embodiment, the frame includes a left guide rail and a right guide rail, a mounting frame is provided between the left guide rail and the right guide rail, the left pulley assembly, the right pulley assembly, the left lower pulley, the right lower pulley, the left card slot and the right card slot are all arranged on the mounting frame, and the left pulley assembly and the right pulley assembly are both located in the middle area of ​​the mounting frame.

[0020] Based on the above solution, a symmetrical layout helps to maintain the balance of the equipment, improve the stability of the overall structure, and reduce instability or tilting caused by center of gravity shift.

[0021] In a preferred embodiment, the middle section of the left elastic cord is parallel to the sliding direction of the left pedal, and the middle section of the right elastic cord is parallel to the sliding direction of the right pedal.

[0022] Based on the above solution, the elastic cord is parallel to the sliding direction of the pedal, which can make the movement of the pedal smoother and reduce the obstruction caused by the twisting or deviation of the elastic cord.

[0023] A preferred solution further includes a handrail frame, which is connected to the upper end of the frame, and the lower ends of the frame and the handrail frame are both supported on the ground.

[0024] In a preferred solution, the armrest frame includes a base frame and an armrest telescopically arranged on the base frame, and a locking assembly is provided between the armrest and the base frame.

[0025] Based on the above solution, the telescopic setting on the armrest allows the user to adjust the height of the armrest according to personal needs, providing a more comfortable use experience.

[0026] The beneficial effects of the utility model are:

[0027] The present invention provides a knee-pad stair climber that effectively solves the problem of impact force caused by sudden stopping and starting of the pedals when they reach their highest and lowest points by adding a buffer component between the pedals and the frame. The elastic effect of the elastic cord can absorb part of the impact force, reducing the additional pressure and risk of injury to the knee joints and alleviating the impact when the pedals stop and start. At the same time, due to the coordinated use of the pulley and the elastic cord, the pedals can maintain a certain degree of stability and balance during exercise, avoiding instability caused by impact force and reducing the risk of falls or sprains that may occur to users during exercise. In addition, the symmetrical pedal design and the elastic cord connection method not only promote body balance, but also enhance the coordination of the left and right leg muscles, thereby improving the exercise effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is the first schematic structural diagram of a knee-pad stair climber in the present invention.

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 This is the second schematic structural diagram of a knee-pad stair climber in the present invention.

[0032] Figure 4 This is the third schematic structural diagram of a knee-pad stair climber in the present invention.

[0033] Description of the numbers in the figure:

[0034] 1-frame; 2-left pedal; 3-right pedal; 4-connecting rope; 5-left buffer assembly; 51-left pulley assembly; 52-left elastic rope; 6-right buffer assembly; 61-right pulley assembly; 62-right elastic rope; 7-left lower pulley; 8-right lower pulley; 9-left mother connection; 10-right mother connection; 11-left sub-connection; 12-right sub-connection; 13-left guide rail; 14-right guide rail; 15-mounting frame; 16-handrail frame; 161-handrail; 162-vertical cylinder; 17-locking assembly. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0036] Example 1:

[0037] See Figures 1-4 This embodiment provides a knee-pad stair climber, comprising a frame 1, on which pedals are slidably provided, the pedals comprising a left pedal 2 and a right pedal 3, the left pedal 2 and the right pedal 3 being connected by a connecting rope 4, the left pedal 2 and the right pedal 3 being driven by the connecting rope 4 to move in opposite directions;

[0038] A left buffer assembly 5 is provided between the left pedal 2 and the frame 1, and a right buffer assembly 6 is provided between the right pedal 3 and the frame 1. The left buffer assembly 5 includes a left pulley assembly 51 and a left elastic rope 52 that passes around the left pulley assembly 51; the right buffer assembly 6 includes a right pulley assembly 61 and a right elastic rope 62 that passes around the right pulley, one end of the left elastic rope 52 is connected to the left pedal 2 and the other end is connected to the frame 1, and one end of the right elastic rope 62 is connected to the right pedal 3 and the other end is connected to the frame 1.

[0039] The left pulley assembly 51 includes two upper left pulleys, and a left channel is formed between the two upper left pulleys for the left elastic rope 52 to pass through; the right pulley assembly 61 includes two upper right pulleys, and a right channel is formed between the two upper right pulleys for the right elastic rope 62 to pass through.

[0040] Specifically, the two upper left pulleys are arranged in opposite directions, with one upward-rotating left pulley and the other downward-rotating left pulley. This configuration ensures that the elastic cord maintains constant tension throughout the entire movement of the step, whether the step is sliding up or down. The left elastic cord 52 passes through the left channel formed by the two upper left pulleys, then extends downward and connects to the frame 1, providing uniform and stable tension to the step throughout its entire range of motion. The upper right pulley also adopts the same design, ensuring stable operation of the stair climber.

[0041] In order to adapt to the needs of different groups of people, based on any of the above solutions, a left lower pulley 7 and a right lower pulley 8 are provided on the frame 1, the left elastic rope 52 passes through the left lower pulley 7 from the bottom and is connected to the frame 1, and the right elastic rope 62 passes through the right lower pulley 8 from the bottom and is connected to the frame 1.

[0042] Specifically, the left elastic rope 52 passes through the left channel, extends downward, bypasses the left lower pulley 7, and is then connected to the frame 1, thereby increasing the length of the elastic rope and realizing the adjustability of the buffering capacity. Similarly, the right elastic rope 62 also passes through the right channel, extends downward, bypasses the right lower pulley 8, and is then connected to the frame 1, and is symmetrically arranged on the left and right.

[0043] In addition, the left elastic cord 52 is provided with a left female connection portion 9 at one end connected to the frame 1, and the frame 1 is provided with a plurality of left sub-connections 11; the left female connection portion 9 is connected to different left sub-connections 11 to adjust the tightness of the left elastic cord 52;

[0044] See Figure 2 The end of the right elastic rope 62 connected to the frame 1 is provided with a right female connection part 10, and the frame 1 is provided with several right sub-connections 12; the right female connection part 10 adjusts the tightness of the right elastic rope 62 by connecting with different right sub-connections 12.

[0045] Specifically, the left female connector 9 is detachably connected to the left sub-connector 11, and can be connected to different left sub-connectors 11, thereby adjusting the length of the left elastic cord 52 and adjusting the cushioning capacity of the left elastic cord 52. Similarly, the right female connector 10 is symmetrically arranged with the left female connector 9.

[0046] Among them, the left female connector is a left hook, the left sub-connection part 11 is a left slot, the right female connector is a right hook, and the right sub-connection part 12 is a right slot; the left elastic rope 52 is connected to the frame 1 by being hooked with the left slot through the left hook, and the right elastic rope 62 is connected to the frame 1 by being hooked with the right slot through the right hook.

[0047] Furthermore, a plurality of the left sub-connecting portions 11 are arranged along the sliding direction of the left pedal 2 , and a plurality of the right sub-connecting portions 12 are arranged along the sliding direction of the right pedal 3 .

[0048] Specifically, the left pedal 2 and the right pedal 3 are connected to the frame 1 via a left hook and a left slot, and a right hook and a right slot, respectively. One end of the elastic cord is fixed to the pedal via the hook and slot, and the other end is connected to the frame 1 in the same manner.

[0049] In order to further enhance the flexibility of adjustment, several left slots are provided in the sliding direction of the left pedal 2, and several right slots are provided in the sliding direction of the right pedal 3. These slots are arranged along the sliding direction of the pedals, so that users can choose different slot positions according to their needs to adjust the tightness of the elastic rope to adapt to exercise needs of different intensities.

[0050] In addition, the frame 1 includes a left guide rail 13 and a right guide rail 14, and a mounting frame 15 is provided between the left guide rail 13 and the right guide rail 14. The left pulley assembly 51, the right pulley assembly 61, the left lower pulley 7, the right lower pulley 8, the left card slot and the right card slot are all arranged on the mounting frame 15, and the left pulley assembly 51 and the right pulley assembly 61 are both located in the middle area of ​​the mounting frame 15.

[0051] Specifically, the left and right pulley assemblies 51 and 61 are symmetrically positioned in the central region of the mounting frame 15, one on each side, ensuring balance and coordination during movement. The left pulley assembly 51 includes two upper left pulleys, forming a channel between them for the left elastic cord 52 to pass through, while the right pulley assembly 61 includes two upper right pulleys, forming a corresponding right channel. The left and right lower pulleys 7 and 8 are also symmetrically positioned along the mounting frame 15 at the bottom region of the mounting frame 15, cooperating with the upper pulleys to provide guidance for the pedals as they slide. The left and right retaining slots are symmetrically positioned on the side walls of the mounting frame 15, located in the lower half of the mounting frame 15, for attaching the elastic cords, allowing the tension of the cords to be adjusted as needed.

[0052] The middle section of the left elastic cord 52 is parallel to the sliding direction of the left pedal 2 , and the middle section of the right elastic cord 62 is parallel to the sliding direction of the right pedal 3 .

[0053] Specifically, the middle section of the left elastic cord 52 is parallel to the sliding track of the left pedal 2 , and the middle section of the right elastic cord 62 is parallel to the sliding track of the right pedal 3 .

[0054] In addition, the knee-pad stair climber further includes a handrail 16, which is connected to the upper end of the frame 1, and the lower ends of the frame 1 and the handrail 16 are both supported on the ground.

[0055] The frame 1 and the armrest frame 16 can be fixedly connected by bolts or welding.

[0056] The armrest frame 16 includes a base frame and an armrest 161 telescopically arranged on the base frame, and a locking assembly 17 is provided between the armrest 161 and the base frame.

[0057] Specifically, the base frame is composed of two vertical tubes 162, namely a left vertical tube 162 and a right vertical tube 162, which are respectively located at two ends of the top of the base frame.

[0058] The base frame includes a left vertical tube 162 and a right vertical tube 162, and the left vertical tube 162 and the right vertical tube 162 are respectively arranged at the two ends of the top of the base frame. The armrest 161 includes a left armrest 161 and a right armrest 161, and the left armrest 161 is telescopically inserted into the left vertical tube 162, and the right armrest 161 is telescopically inserted into the right vertical tube 162.

[0059] The locking assembly 17 includes a bolt. The left armrest 161 and the left vertical tube 162 are each provided with a corresponding left screw hole. The left armrest 161 and the left vertical tube 162 are connected by the bolt engaging with the left screw hole. The right armrest 161 and the right vertical tube 162 are each provided with a corresponding right screw hole. The right armrest 161 and the right vertical tube 162 are connected by the bolt engaging with the right screw hole. The left vertical tube 162 and the left armrest 161 are each provided with a plurality of left screw holes arranged vertically, while the right vertical tube 162 and the right armrest 161 are each provided with a plurality of right screw holes arranged vertically. Users can adjust the height of the armrest 161 by inserting bolts into screw holes at different heights according to their personal needs, thereby meeting the needs of people of different heights.

[0060] The following is a further explanation of the present invention in conjunction with its working principle:

[0061] The frame 1 of the knee-protecting stair climber provided by this utility model is equipped with a left pedal 2 and a right pedal 3. These pedals interact via a connecting rope 4, enabling the pedals to slide in opposite directions. Each pedal is equipped with an elastic cord. The left connecting rope 4 of the left pedal 2 is wound through the upper left pulley assembly and extends over the lower left pulley 7, providing sufficient cushioning to protect the knees from the impact of the pedals and improve exercise efficiency. The elastic cord is equipped with a hook, and the frame 1 is equipped with multiple slots. Users can adjust the length and cushioning capacity of the elastic cord by adjusting the matching position of the hook and slot to suit different exercise needs. The design and function of the right pedal 3 are symmetrical with the left pedal 2, ensuring balanced exercise.

[0062] The armrest 161 is inserted into the vertical tube 162 and fixed by bolts, allowing the user to adjust the height of the armrest 161 according to personal height to ensure that the arm can be properly supported during use.

[0063] The present invention is not limited to the above optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. A knee-pad stair climber, characterized by: The machine comprises a frame, on which pedals are slidably provided, the pedals comprising a left pedal and a right pedal, the left pedal and the right pedal being connected by a connecting rope, the left pedal and the right pedal being driven by the connecting rope to move in opposite directions; A left buffer assembly is provided between the left pedal and the frame, and a right buffer assembly is provided between the right pedal and the frame. The left buffer assembly includes a left pulley assembly and a left elastic rope passing around the left pulley assembly; the right buffer assembly includes a right pulley assembly and a right elastic rope passing around the right pulley, one end of the left elastic rope is connected to the left pedal and the other end is connected to the frame, and one end of the right elastic rope is connected to the right pedal and the other end is connected to the frame.

2. The knee-pad stair climber according to claim 1, characterized in that: The left pulley assembly includes two upper left pulleys, and a left channel is formed between the two upper left pulleys for the left elastic rope to pass through; the right pulley assembly includes two upper right pulleys, and a right channel is formed between the two upper right pulleys for the right elastic rope to pass through.

3. The knee-pad stair climber according to claim 1, characterized in that: The frame is provided with a left lower pulley and a right lower pulley, the left elastic rope passes over the left lower pulley from the bottom and is connected to the frame, and the right elastic rope passes over the right lower pulley from the bottom and is connected to the frame.

4. The knee-pad stair climber according to claim 3, characterized in that: The left elastic rope is provided with a left female connector at one end connected to the frame, and the frame is provided with a plurality of left sub-connectors; the left female connector is connected to different left sub-connectors to adjust the tightness of the left elastic rope; One end of the right elastic rope connected to the frame is provided with a right female connection part, and the frame is provided with a plurality of right sub-connections; the right female connection part adjusts the tightness of the right elastic rope by being connected with different right sub-connections.

5. The knee-pad stair climber according to claim 4, characterized in that: The left mother connection part is a left hook, the left child connection part is a left slot, the right mother connection part is a right hook, and the right child connection part is a right slot; the left elastic rope is connected to the frame by being hung together with the left slot through the left hook, and the right elastic rope is connected to the frame by being hung together with the right slot through the right hook.

6. The knee-pad stair climber according to claim 4, characterized in that: A plurality of the left sub-connecting portions are arranged along the sliding direction of the left pedal, and a plurality of the right sub-connecting portions are arranged along the sliding direction of the right pedal.

7. The knee-pad stair climber according to claim 5, characterized in that: The frame includes a left guide rail and a right guide rail, a mounting frame is provided between the left guide rail and the right guide rail, the left pulley assembly, the right pulley assembly, the left lower pulley, the right lower pulley, the left card slot and the right card slot are all provided on the mounting frame, and the left pulley assembly and the right pulley assembly are both located in the middle area of ​​the mounting frame.

8. The knee-pad stair climber according to claim 1, characterized in that: The middle section of the left elastic cord is parallel to the sliding direction of the left pedal, and the middle section of the right elastic cord is parallel to the sliding direction of the right pedal.

9. The knee-pad stair climber according to claim 1, characterized in that: It also includes an armrest frame, which is connected to the upper end of the frame, and the lower ends of the frame and the armrest frame are both supported on the ground.

10. The knee-pad stair climber according to claim 9, characterized in that: The armrest frame comprises a base frame and an armrest telescopically arranged on the base frame, and a locking component is provided between the armrest and the base frame.

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