Stair fitness machine

Abstract

The utility model discloses a stair body-building machine which comprises a support, two pedal assemblies and a linkage mechanism, the two pedal assemblies are arranged on the left side and the right side of the support respectively and can slide up and down relative to the support, the linkage mechanism is connected with the two pedal assemblies, and when one pedal assembly slides downwards, the other pedal assembly slides upwards. The left side and the right side of the support are each provided with a set of elastic ropes providing reset force for the pedal assemblies, the elastic ropes on the two sides are symmetrical, one ends of the elastic ropes are connected with the pedal assemblies on the same side, the other ends of the elastic ropes are connected to the support, and each set of elastic ropes corresponds to a set of first guide wheels arranged on the support and used for guiding. The elastic rope is wound on the first guide wheel, the first guide wheel tensions the elastic rope and changes the direction of the elastic rope, and the elastic rope is guided by arranging the first guide wheel, so that a longer elastic rope can be arranged between the pedal assembly and the support, and the elastic rope has enough tensile elongation and is not easy to snap due to pulling.

Description

Technical Field

[0001] The utility model relates to a fitness device, in particular to a stair fitness machine. Background Art

[0002] At present, people pay more and more attention to their physical health, so they also pay more attention to exercise. Among them, mountain climbing and climbing are very good fitness exercises. However, outdoor fitness is affected by factors such as weather, environment or time. Sometimes, in order to exercise, people will also choose to climb stairs, but generally they need to continuously climb a relatively high floor to achieve the exercise effect. For this reason, stair machines have emerged on the market. The exerciser simulates the climbing and mountain climbing movements by stepping on the pedals of the stair machine and walking.

[0003] The existing stair climbers generally include a bracket, and pedal assemblies arranged on the left and right sides of the bracket. The pedal assemblies can slide up and down relative to the bracket. The two pedal assemblies on both sides are connected by a steel wire rope to form a linkage. During use, the pedal assemblies need an elastic rope that provides damping force and restoring force, so that there is resistance when the pedal assemblies slide up and down, and the pedal assemblies that slide up and down can be pulled back to the initial position.

[0004] If the elastic rope is directly connected from the positioning point of the bracket to the pedal assembly, since the distance between points is too short, the connected elastic rope is too short, the stretching elongation rate of the elastic rope is not long enough, the elastic force is not enough, and it is easy to break. A guiding structure is needed to solve this problem. Summary of the Utility Model

[0005] Based on the above problem that the existing elastic rope is directly connected from the positioning point of the bracket to the pedal assembly, since the distance between points is too short, the connected elastic rope is too short, the stretching elongation rate of the elastic rope is not long enough, and it is easy to break, the utility model provides a stair fitness machine.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a stair fitness machine, including a bracket, two pedal assemblies and a linkage mechanism. The two pedal assemblies are respectively arranged on the left and right sides of the bracket and can slide up and down relative to the bracket. The linkage mechanism connects the two pedal assemblies so that when one pedal assembly slides down, the other pedal assembly slides up. On each of the left and right sides of the bracket, there is a set of elastic ropes that provide a restoring force to the pedal assembly. The elastic ropes on both sides are symmetrical. One end of the elastic rope is connected to the pedal assembly on the same side, and the other end is connected to the bracket. Each set of elastic ropes corresponds to a set of first guide wheels arranged on the bracket for guiding. The elastic rope is wound around the first guide wheel. The first guide wheel tensions the elastic rope and changes the direction of the elastic rope.

[0007] A further preferred technical solution of the present utility model is that the first guide wheels corresponding to the two groups of elastic ropes are both arranged at the bottom of the bracket.

[0008] A further preferred technical solution of the present utility model is that the first guide wheels corresponding to the two groups of elastic ropes are both arranged at the top of the bracket.

[0009] A further preferred technical solution of the present utility model is that the bracket is provided with a connecting part for forming a connection with the end of the elastic rope. The connecting part is provided with a plurality of gear holes, and the distances from each gear hole to the first guide wheel are different. The end of the elastic rope is detachably connected to one of the gear holes.

[0010] A further preferred technical solution of the present utility model is that the linkage mechanism includes at least one second guide wheel and a linkage steel wire wound around the second guide wheel. The two ends of the linkage steel wire are respectively connected to two pedal assemblies.

[0011] A further preferred technical solution of the present utility model is that the bracket includes two obliquely arranged sliding rods, and the two pedal assemblies are respectively sleeved on the two sliding rods and can slide up and down along the sliding rods.

[0012] Another theme: A stair fitness machine, including a bracket, two pedal assemblies and a linkage mechanism. The two pedal assemblies are respectively arranged on the left and right sides of the bracket and can slide up and down relative to the bracket. The linkage mechanism connects the two pedal assemblies so that when one pedal assembly slides down, the other pedal assembly slides up. Two groups of elastic ropes for providing a restoring force to the pedal assemblies are respectively arranged on the left and right sides of the bracket. The elastic ropes on both sides are symmetrical. One end of the elastic rope is connected to the pedal assembly on the same side, and the other end is connected to the bracket. Each group of elastic ropes corresponds to a group of first guide wheels arranged on the bracket for guiding. The elastic rope is wound around the first guide wheel, and the first guide wheel tensions the elastic rope and changes the direction of the elastic rope.

[0013] A further preferred technical solution of the present utility model is that the first guide wheels corresponding to the two groups of elastic ropes on the same side are respectively arranged at the top and bottom of the bracket. The bracket includes two obliquely arranged sliding rods, and the two pedal assemblies are respectively sleeved on the two sliding rods and can slide up and down along the sliding rods.

[0014] A further preferred technical solution of the present utility model is that the bracket is provided with a connecting part for forming a connection with the end of the elastic rope. The connecting part is provided with a plurality of gear holes, and the distances from each gear hole to the first guide wheel are different. The end of the elastic rope is detachably connected to one of the gear holes.

[0015] A further preferred technical solution of the present utility model is that the linkage mechanism includes at least one second guide wheel and a linkage wire wound around the second guide wheel, and both ends of the linkage wire are respectively connected to two pedal assemblies.

[0016] Compared with the prior art, the advantages of the present utility model are that two pedal assemblies are slidably arranged on the left and right sides of the bracket, the pedal assemblies on both sides are connected by a linkage mechanism, and a set of elastic ropes for providing a restoring force to the pedal assemblies are arranged on each of the left and right sides of the bracket. The elastic ropes on both sides are symmetrical. One end of the elastic rope is connected to the pedal assembly on the same side, and the other end is connected to the bracket. In this way, when the exerciser alternately steps on the pedal assemblies on the left and right sides, an upward climbing motion state will be formed. During the up and down sliding process of the pedal assemblies, the elastic ropes are pulled by the sliding pedal assemblies and undergo elastic deformation, playing the role of movement resistance to achieve the purpose of exercise. And the elastically deformed elastic ropes can pull the pedal assemblies to move back to the initial position, enabling the exerciser to perform alternate stepping actions. This fitness machine can simulate indoor climbing or mountain climbing and other exercises for people, thus being not affected by factors such as terrain and weather.

[0017] In addition, each set of elastic ropes corresponds to a set of first guide wheels arranged on the bracket for guiding. The elastic ropes are wound around the first guide wheels. The first guide wheels tension the elastic ropes and change the direction of the elastic ropes. By arranging the first guide wheels to guide the elastic ropes, longer elastic ropes can be arranged between the pedal assemblies and the bracket, enabling the elastic ropes to have sufficient stretching elongation and being not easily broken due to pulling, so that the elastic ropes are more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model for Embodiment 1;

[0020] Figure 2 Partial schematic of the present utility model for Embodiment 1 Figure 1 ;

[0021] Figure 3 For Embodiment 1 Figure 2 Rear view schematic;

[0022] Figure 4Exploded view of the bracket, footrest assembly, elastic rope, linkage wire, first guide wheel and second guide wheel in Embodiment 1;

[0023] Figure 5 For Embodiment 1 Figure 2 sectional schematic view Figure 1 ;

[0024] Figure 6 For Embodiment 1 Figure 2 sectional schematic view Figure 2 ;

[0025] Figure 7 Partial schematic view of the present utility model in Embodiment 2 Figure 1 ;

[0026] Figure 8 For Embodiment 2 Figure 7 rear schematic view;

[0027] Figure 9 Exploded view of the bracket, footrest assembly, elastic rope, linkage wire, first guide wheel and second guide wheel in Embodiment 2;

[0028] Figure 10 For Embodiment 2 Figure 7 sectional schematic view Figure 1 ;

[0029] Figure 11 For Embodiment 2 Figure 7 sectional schematic view Figure 2 .

[0030] In the figure: 1. Bracket; 2. Footrest assembly; 3. Linkage wire; 4. Second guide wheel; 5. Elastic rope; 6. First guide wheel; 7. Slide bar; 8. Top frame; 9. Bottom frame; 10. Roller fixing seat; 11. First roller; 12. Second roller; 13. Socket; 14. Intermediate rod; 15. Mounting plate; 16. Hook; 17. Gear hole. Detailed implementation manners

[0031] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present utility model.

[0032] It should be noted that: Similar reference numerals denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0033] Embodiment 1

[0034] Figures 1-6As shown in the figure, a stair fitness machine includes a bracket 1, two pedal assemblies 2 and a linkage mechanism.

[0035] The two pedal assemblies 2 are respectively arranged on the left and right sides of the bracket 1 and can slide up and down relative to the bracket 1.

[0036] Preferably, the bracket 1 includes two obliquely arranged sliding rods 7. The two sliding rods 7 are arranged parallel to each other from left to right. The two pedal assemblies 2 are respectively sleeved on the two sliding rods 7 and can slide up and down along the sliding rods 7.

[0037] Figures 2-4 As shown in the figure, specifically, the pedal assembly 2 includes a roller fixing seat 10 and a pedal fixing seat connected to the roller fixing seat 10. A pedal for foot stepping is fixed on the pedal fixing seat. A first roller 11 and a second roller 12 are installed on the roller fixing seat 10. The rotation axes of the first roller 11 and the second roller 12 are parallel. A socket 13 is formed between the first roller 11 and the second roller 12. The pedal assembly 2 slides on the sliding rod 7 through the socket 13. The first roller 11 and the second roller 12 are the contact parts where the pedal assembly 2 contacts the sliding rod 7.

[0038] The linkage mechanism connects the two pedal assemblies 2 so that when one pedal assembly 2 slides down, the other pedal assembly 2 slides up.

[0039] Figure 5 、 Figure 6 As shown in the figure, preferably, the linkage mechanism includes at least one second guide wheel 4 and a linkage wire 3 wound around the second guide wheel 4. The two ends of the linkage wire 3 are respectively connected to the two pedal assemblies 2. Most preferably, the number of the second guide wheels 4 is two. The bracket 1 includes a top bracket 8 at the top. The two ends of the top bracket 8 are respectively fixedly connected to the sliding rods 7 on both sides. The two second guide wheels 4 are installed on the top bracket 8. The linkage wire 3 bypasses the two second guide wheels 4 and the two ends are respectively connected to the roller fixing seats 10. When one side of the pedal assembly 2 is stepped on and slides down, the linkage wire 3 pulls the other side of the pedal assembly 2 to slide up to form an alternating up and down sliding.

[0040] On the left and right sides of the bracket 1, a set of elastic ropes 5 that provide a restoring force for the pedal assembly 2 are respectively arranged. The elastic ropes 5 on both sides are symmetrical. One end of the elastic rope 5 is connected to the pedal assembly 2 on the same side, and the other end is connected to the bracket 1.

[0041] That is, one end of the elastic rope 5 on the left is connected to the left roller fixing seat 10, and the other end is connected to the bracket 1. One end of the elastic rope 5 on the right is connected to the right roller fixing seat 10, and the other end is connected to the bracket 1.

[0042] In this way, when the exerciser alternately steps on the pedal assemblies 2 on the left and right sides, an upward climbing motion state will be formed. During the up and down sliding process of the pedal assembly 2, the elastic rope 5 is pulled by the sliding pedal assembly 2 and undergoes elastic deformation, playing the role of exercise resistance to achieve the purpose of exercise. And the elastically deformed elastic rope 5 can pull the pedal assembly 2 to move back to the initial position so that the exerciser can achieve the alternate stepping action. This fitness machine can enable people to simulate exercises such as climbing stairs or mountains indoors, thus being unaffected by factors such as terrain and weather.

[0043] Each set of elastic ropes 5 corresponds to a set of first guide wheels 6 for guiding, which are arranged on the bracket 1. The elastic rope 5 is wound around the first guide wheel 6. The first guide wheel 6 tensions the wound elastic rope 5 and changes the direction of the elastic rope 5. By setting the first guide wheel 6 to guide the elastic rope 5, a longer elastic rope 5 can be arranged between the pedal assembly 2 and the bracket 1, enabling the elastic rope to have sufficient tensile elongation and being not easily broken due to pulling, so that the elastic rope is more durable.

[0044] Figures 2-5 As shown, preferably, the first guide wheels 6 corresponding to the two sets of elastic ropes 5 are both arranged at the bottom of the bracket 1. Specifically, the bracket 1 includes a bottom frame 9 at the bottom. The two ends of the bottom frame 9 are fixedly connected to the sliding rods 7 on both sides. The bottom frame 9 and the top frame 8 are both arranged horizontally. There are two first guide wheels 6 on the bottom frame 9 corresponding to the elastic ropes 5 on the left and right sides respectively. The elastic rope 5 connected to the pedal assembly 2 extends downward around the first guide wheel 6 on the bottom frame 9 and then extends upward and is connected to the bracket 1, for example, connected to the top frame 8.

[0045] Preferably, for the position of the above-mentioned first guide wheel 6, this patent has another solution, and the specific content is as follows: The first guide wheels 6 corresponding to the two sets of elastic ropes 5 are arranged at the top of the bracket 1. There are two first guide wheels 6 on the top frame 8 corresponding to the elastic ropes 5 on the left and right sides respectively. The elastic rope 5 connected to the pedal assembly 2 extends upward around the first guide wheel 6 on the top frame 8 and then extends downward and is connected to the bracket 1, for example, connected to the bottom frame 9.

[0046] In addition, the bracket 1 is provided with a connection part for forming a connection with the end of the elastic rope 5. There are several gear holes 17 on the connection part. The distances from each gear hole 17 to the first guide wheel 6 are different. The end of the elastic rope 5 is detachably connected to one of the gear holes 17. Preferably, a hook 16 is connected to the end of the elastic rope 5, and the elastic rope 5 is hooked on one of the gear holes 17 through the hook 16.

[0047] The connecting part can be a part of the bracket 1, or the connecting part can be a component fixed on the bracket 1. Preferably, the bracket 1 includes an intermediate rod 14 located between two slide rods 7. The upper and lower ends of the intermediate rod 14 are respectively fixedly connected to the top frame 8 and the bottom frame 9. The connecting part is a mounting plate 15 fixed on the intermediate rod 14. Two rows of gear holes 17 corresponding to the elastic ropes 5 on both sides are provided on the left and right sides of the mounting plate 15. Each row has three gear holes 17. The elastic rope 5 can be hooked on one of the three gear holes 17 through the hook 16 to adjust the resistance provided by the elastic rope 5 when the exerciser steps on the pedal assembly 2 and slides up and down, meeting the needs of different users.

[0048] Regarding the detachable connection method between the end of the elastic rope 5 and the gear hole 17, this patent is not limited to the above-mentioned hooking with the hook 16. Other conventional detachable connection methods are applicable to this patent. For example, the end of the elastic rope 5 is directly tied to the gear hole 17, or a connecting ring is connected to the end of the elastic rope 5, and the connecting ring is connected to the gear hole 17.

[0049] Embodiment 2

[0050] Figures 7-11 As shown, the stair fitness machine includes a bracket 1, two pedal assemblies 2 and a linkage mechanism.

[0051] The two pedal assemblies 2 are respectively arranged on the left and right sides of the bracket 1 and can slide up and down relative to the bracket 1.

[0052] Preferably, the bracket 1 includes two obliquely arranged slide rods 7. The two slide rods 7 are arranged parallel to each other left and right. The two pedal assemblies 2 are respectively sleeved on the two slide rods 7 and can slide up and down along the slide rods 7.

[0053] Figures 7-9 As shown, specifically, the pedal assembly 2 includes a roller fixing seat 10 and a pedal fixing seat connected to the roller fixing seat 10. A pedal for foot stepping is fixed on the pedal fixing seat. A first roller 11 and a second roller 12 are installed on the roller fixing seat 10. The rotation axes of the first roller 11 and the second roller 12 are parallel. A socket 13 is formed between the first roller 11 and the second roller 12. The pedal assembly 2 slides on the slide rod 7 through the socket 13. The first roller 11 and the second roller 12 are the contact parts where the pedal assembly 2 contacts the slide rod 7.

[0054] The linkage mechanism connects the two pedal assemblies 2 so that when one pedal assembly 2 slides down, the other pedal assembly 2 slides up.

[0055] Figures 9-11As shown, preferably, the linkage mechanism includes at least one second guide wheel 4 and a linkage wire 3 wound around the second guide wheel 4. The two ends of the linkage wire 3 are respectively connected to two pedal assemblies 2. Most preferably, there are two second guide wheels 4. The bracket 1 includes a top frame 8 at the top. The two ends of the top frame 8 are respectively fixedly connected to the slide bars 7 on both sides. The two second guide wheels 4 are installed on the top frame 8. The linkage wire 3 bypasses the two second guide wheels 4 and the two ends are respectively connected to the roller fixing seats 10. When one pedal assembly 2 is stepped on and slides down, the linkage wire 3 pulls the other pedal assembly 2 to slide upward, so as to form an alternating up-and-down sliding.

[0056] On the left and right sides of the bracket 1, there are two groups of elastic ropes 5 each that provide a restoring force to the pedal assembly 2. The elastic ropes 5 on both sides are symmetrical. One end of the elastic rope 5 is connected to the pedal assembly 2 on the same side, and the other end is connected to the bracket 1.

[0057] That is, one end of the two groups of elastic ropes 5 on the left is connected to the roller fixing seat 10 on the left, and the other end is connected to the bracket 1. One end of the two groups of elastic ropes 5 on the right is connected to the roller fixing seat 10 on the right, and the other end is connected to the bracket 1.

[0058] In this way, when the exerciser alternately steps on the pedal assemblies 2 on the left and right sides, a climbing motion state will be formed. During the up-and-down sliding of the pedal assembly 2, the elastic rope 5 is pulled by the sliding pedal assembly 2 and undergoes elastic deformation, playing the role of motion resistance to achieve the purpose of exercise. And the elastically deformed elastic rope 5 can pull the pedal assembly 2 to move back to the initial position, so that the exerciser can achieve the alternating stepping action. This fitness machine can simulate climbing stairs or mountains indoors by people, thus being not affected by factors such as terrain and weather.

[0059] Each group of elastic ropes 5 corresponds to a set of first guide wheels 6 provided on the bracket 1 for guiding. The elastic rope 5 is wound around the first guide wheel 6. The first guide wheel 6 tensions the wound elastic rope 5 and changes the direction of the elastic rope 5. By setting the first guide wheel 6 to guide the elastic rope 5, a longer elastic rope 5 can be set between the pedal assembly 2 and the bracket 1, enabling the elastic rope to have sufficient stretching elongation and being not easily broken due to pulling, so that the elastic rope is more durable.

[0060] Figure 8As shown, preferably, the first guide wheels 6 corresponding to the two sets of elastic ropes 5 on the same side are respectively arranged at the top and bottom of the bracket 1. Specifically, a first guide wheel 6 is provided at the upper end of each of the two slide rods 7, and a first guide wheel 6 is provided at the lower end of each of the two slide rods 7. One set of elastic ropes 5 connected to the left pedal assembly 2 extends upward around the first guide wheel 6 on the upper end of the left slide rod 7 and then extends downward to be connected to the bracket 1. The other set of elastic ropes 5 connected to the left pedal assembly 2 extends downward around the first guide wheel 6 on the lower end of the left slide rod 7 and then extends upward to be connected to the bracket 1. One set of elastic ropes 5 connected to the right pedal assembly 2 extends upward around the first guide wheel 6 on the upper end of the right slide rod 7 and then extends downward to be connected to the bracket 1. The other set of elastic ropes 5 connected to the right pedal assembly 2 extends downward around the first guide wheel 6 on the lower end of the right slide rod 7 and then extends upward to be connected to the bracket 1.

[0061] In addition, the bracket 1 is provided with a connecting portion for forming a connection with the end of the elastic rope 5. A number of gear holes 17 are provided on the connecting portion, and the distances from each gear hole 17 to the first guide wheel 6 are different. The end of the elastic rope 5 is detachably connected to one of the gear holes 17. Preferably, a hook 16 is connected to the end of the elastic rope 5, and the elastic rope 5 is hooked on one of the gear holes 17 through the hook 16.

[0062] The connecting portion can be a part of the bracket 1, or the connecting portion can be a component fixed on the bracket 1. Preferably, the bracket 1 includes a bottom frame 9 at the bottom and an intermediate rod 14 located between the two slide rods 7. The two ends of the bottom frame 9 are fixedly connected to the slide rods 7 on both sides. The bottom frame 9 and the top frame 8 are both arranged horizontally. The upper and lower ends of the intermediate rod 14 are respectively fixedly connected to the top frame 8 and the bottom frame 9. The connecting portion is a mounting plate 15 fixed on the intermediate rod 14. There are two mounting plates 15, and the two mounting plates 15 are distributed up and down. The upper mounting plate 15 is used to connect the elastic rope 5 that bypasses the first guide wheel 6 on the upper end of the slide rod 7. The lower mounting plate 15 is used to connect the elastic rope 5 that bypasses the first guide wheel 6 on the lower end of the slide rod 7. Two rows of gear holes 17 corresponding to the elastic ropes 5 on both sides are provided on the left and right sides of the mounting plate 15. Each row has three gear holes 17. The elastic rope 5 can be hooked on one of the three gear holes 17 through the hook 16 to adjust the resistance provided by the elastic rope 5 when the exerciser steps on the pedal assembly 2 and slides up and down, so as to meet the use of people with different needs.

[0063] Regarding the detachable connection method of the end of the elastic rope 5 to the gear hole 17, this patent is not limited to the above-mentioned hooking with the hook 16, and other conventional detachable connection methods are applicable to this patent. For example, the end of the elastic rope 5 is directly tied to the gear hole 17, or a connection ring is connected to the end of the elastic rope 5, and the connection ring is connected to the gear hole 17.

[0064] The above has introduced the stair fitness machine provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A staircase fitness machine, comprising a bracket, two foot pedal assemblies and a linkage mechanism, wherein the two foot pedal assemblies are respectively arranged on the left and right sides of the bracket and can slide up and down relative to the bracket, and the linkage mechanism connects the two foot pedal assemblies so that when one foot pedal assembly slides down, the other foot pedal assembly slides up, characterized in that: A group of elastic ropes for providing restoring force to the pedal assembly is respectively arranged on the left and right sides of the bracket, and the elastic ropes on both sides are symmetrical, one end of the elastic rope is connected to the pedal assembly on the same side, and the other end is connected to the bracket, and each group of elastic ropes corresponds to a group of first guide wheels for guiding arranged on the bracket, and the elastic ropes are wound around the first guide wheels, and the first guide wheels tension the elastic ropes and change the direction of the elastic ropes.

2. The stair fitness machine according to claim 1, characterized in that: The first guide wheels corresponding to the two groups of elastic ropes are both arranged at the bottom of the bracket.

3. The stair fitness machine according to claim 1, characterized in that: The first guide wheels corresponding to the two groups of elastic ropes are both arranged on the top of the bracket.

4. The stair fitness machine according to claim 1, characterized in that: The bracket is provided with a connecting portion for connecting with the end of the elastic rope, and the connecting portion is provided with a plurality of gear holes. The distances between each gear hole and the first guide wheel are different, and the end of the elastic rope is detachably connected to one of the gear holes.

5. The stair fitness machine according to claim 1, characterized in that: The linkage mechanism comprises at least one second guide wheel and a linkage steel wire wound around the second guide wheel, and two ends of the linkage steel wire are respectively connected to two pedal assemblies.

6. The stair fitness machine according to claim 1, characterized in that: The bracket comprises two obliquely arranged sliding bars, and the two foot pedal assemblies are respectively sleeved on the two sliding bars and can slide up and down along the sliding bars.

7. A staircase fitness machine, comprising a bracket, two foot pedal assemblies and a linkage mechanism, wherein the two foot pedal assemblies are respectively arranged on the left and right sides of the bracket and can slide up and down relative to the bracket, and the linkage mechanism connects the two foot pedal assemblies so that when one foot pedal assembly slides down, the other foot pedal assembly slides up, characterized in that: Two groups of elastic ropes are respectively arranged on the left and right sides of the bracket to provide restoring force to the foot pedal assembly. The elastic ropes on both sides are symmetrical. One end of the elastic rope is connected to the foot pedal assembly on the same side, and the other end is connected to the bracket. Each group of elastic ropes corresponds to a group of first guide wheels provided on the bracket for guiding. The elastic ropes are wound around the first guide wheels. The first guide wheels tension the elastic ropes and change the direction of the elastic ropes.

8. The stair fitness machine according to claim 7, characterized in that: The first guide wheels corresponding to the two sets of elastic ropes on the same side are respectively arranged at the top and bottom of the bracket. The bracket includes two obliquely arranged sliding rods. The two foot pedal assemblies are respectively mounted on the two sliding rods and can slide up and down along the sliding rods.

9. The stair fitness machine according to claim 7, characterized in that: The bracket is provided with a connecting portion for connecting with the end of the elastic rope, and the connecting portion is provided with a plurality of gear holes. The distances between each gear hole and the first guide wheel are different, and the end of the elastic rope is detachably connected to one of the gear holes.

10. The stair fitness machine according to claim 7, characterized in that: The linkage mechanism comprises at least one second guide wheel and a linkage steel wire wound around the second guide wheel, and two ends of the linkage steel wire are respectively connected to two pedal assemblies.

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