Pedal drive mechanism for stair climber

Abstract

The utility model discloses a kind of pedal transmission mechanism of stair climbing machine, belong to the field of stair climbing machine, including frame;Frame inside is provided with crossbeam and vertical beam;Vertical beam left and right sides and frame inner chamber left and right side wall are respectively provided with sliding slot;Two lifting frames, respectively through pulley can be slidably arranged in the sliding slot inside on frame and vertical beam, lifting frame is used for installing footboard on;Two resistance adjusting parts, setting in vertical beam back;Tension adjusting part, setting in frame inside;Two gyro wheels one, respectively setting in crossbeam bottom.The pedal transmission mechanism of stair climbing machine of the utility model, by reasonable structure design and component cooperation, good transmission linkage, accurate resistance adjustment, convenient tension adjustment and reliable auxiliary function are realized, effectively solve many deficiencies of traditional stair climbing machine pedal transmission mechanism, improve the use performance, stability and maintenance convenience of stair climbing machine.

Description

Technical Field

[0001] This utility model belongs to the field of stair climbing machines, specifically relating to a pedal transmission mechanism for a stair climbing machine. Background Technology

[0002] In the field of stair climbing machine equipment, the performance of the pedal transmission mechanism has a significant impact on the overall user experience and work efficiency of the stair climbing machine.

[0003] Traditional stair climber pedal transmission mechanisms have many shortcomings; the resistance adjustment function is limited or inaccurate, and it cannot be flexibly adjusted according to different loads and stair climbing scenarios, resulting in unreasonable energy consumption or malfunctioning equipment; at the same time, long-term use can easily lead to loosening and slippage, affecting transmission efficiency and equipment lifespan. Furthermore, existing pedal transmission mechanisms are inconvenient to maintain. To solve the above problems, a new pedal transmission mechanism for stair climbers is proposed. Utility Model Content

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, this utility model provides a pedal transmission mechanism for a stair climber, which has the advantages of adjustable resistance and easy maintenance.

[0005] To achieve the above objectives, this utility model provides a pedal transmission mechanism for a stair climber, including a frame; a horizontal beam and a vertical beam are provided inside the frame; and sliding grooves are respectively provided on the left and right sides of the vertical beam and the left and right side walls of the inner cavity of the frame. Two lifting frames are slidably mounted inside grooves on the frame and vertical beam via pulleys, and foot pedals are installed on the lifting frames. Two resistance adjustment components are located on the back of the vertical beam; The tension adjustment component is located inside the frame. Two rollers are respectively installed at the bottom of the crossbeam; The multi-ribbed belt passes sequentially around two rollers, a tension adjustment component, and two resistance adjustment components. The two lifting frames are respectively fixed to the multi-ribbed belt by clamps. The multi-ribbed belt is used to link the two rollers, the tension adjustment component, the two resistance adjustment components, and the two lifting frames. When the two lifting frames rotate, they will drive the resistance adjustment component to rotate. The resistance adjustment component is used to adjust the moving resistance of the two lifting frames, and the tension adjustment component is used to adjust the tension of the multi-ribbed belt.

[0006] Furthermore, the resistance adjustment component includes a mounting rod disposed on the back of the vertical beam; three rollers respectively disposed on the top of the mounting rod; a resistance disc disposed on the uppermost roller; and a magnetic adjuster disposed on the mounting rod and fitted around the edge of the resistance disc.

[0007] Furthermore, the tension adjustment component includes two adjusting screws threaded through the bottom of the frame; a stop block disposed at the bottom end of the adjusting screw; a spring 1 sleeved on the outer wall of the adjusting screw and connected at both ends to the bottom of the frame and the top of the stop block respectively; and a roller 3 rotatably disposed at the top of the two adjusting screws.

[0008] Furthermore, the magnetic force adjuster includes a mounting bracket mounted on the mounting rod and sleeved on the edge of the resistance plate; a sliding sleeve mounted on the outer wall of the mounting bracket; a lifting plate that can slide through the sliding sleeve; a fixing screw mounted on the mounting bracket for fixing the lifting plate; two limiting rods that can slide through the mounting bracket respectively; two springs sleeved on the outer wall of the limiting rods and connected at both ends to the lifting plate and the mounting bracket respectively; and three magnetic plates mounted on the top of the two limiting rods and inside the mounting bracket.

[0009] Furthermore, the bottom wall of the inner cavity of the chute is provided with shock-absorbing blocks, which have a honeycomb structure.

[0010] Furthermore, the wheel frames on roller one, roller two, and roller three are respectively provided with guide grooves for the wheel body to slide out, and the guide grooves are L-shaped.

[0011] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: The pedal transmission mechanism of this utility model stair climber, through reasonable structural design and component coordination, achieves good transmission linkage, precise resistance adjustment, convenient tension adjustment and reliable auxiliary functions, effectively solving many shortcomings of traditional stair climber pedal transmission mechanisms, and improving the performance, stability and maintenance convenience of the stair climber. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a schematic diagram of the structure of the resistance plate after disassembly. Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the magnetic force regulator structure of this utility model.

[0013] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Frame; 2. Crossbeam; 3. Vertical beam; 4. Slide groove; 5. Lifting frame; 6. Pulley; 7. Resistance adjusting component; 71. Mounting rod; 72. Roller II; 73. Resistance disc; 74. Magnetic adjuster; 741. Mounting bracket; 742. Sliding sleeve; 743. Lifting plate; 744. Fixing screw; 745. Limiting rod; 746. Spring II; 747. Magnetic plate; 8. Tension adjusting component; 81. Adjusting screw; 82. Stop block; 83. Spring I; 84. Roller III; 9. Roller I; 10. Multi-wedge belt; 11. Clamping block; 12. Shock absorber block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This utility model provides a pedal transmission mechanism for a stair climber, including a frame 1; the frame 1 is provided with a horizontal beam 2 and a vertical beam 3, which form the basic division of the internal installation space; the left and right sides of the vertical beam 3 and the left and right side walls of the inner cavity of the frame 1 are respectively provided with sliding grooves 4; Two lifting frames 5 are slidably mounted inside the slide grooves 4 on the frame 1 and the vertical beam 3 respectively via pulleys 6. Foot pedals are installed on the lifting frames 5. The pulleys 6 cooperate with the slide grooves 4 to achieve smooth sliding along the frame 1 and the vertical beam 3. Appropriate foot pedals can be installed according to actual needs for people to step on. Two resistance adjustment components 7 are installed on the back of the vertical beam 3; they are used to adjust the moving resistance of the two lifting frames 5 to adapt to different stair climbing loads, slopes and other working conditions. Tension adjustment component 8 is located inside frame 1; Two rollers, number 9, are respectively installed at the bottom of the crossbeam 2; The multi-wedge belt 10 passes around two rollers 9, tension adjustment component 8 and two resistance adjustment components 7 in sequence to form a closed transmission loop. The two lifting frames 5 are fixed to the multi-wedge belt 10 by clamps 11. This connection method allows the multi-wedge belt 10 to move synchronously and drive the two lifting frames 5 in linkage. When one of the lifting frames 5 is moved by an external force, such as the force generated by a person stepping on it, the multi-wedge belt 10 transmits power to make the other lifting frame 5 make a corresponding reverse movement, realizing alternating lifting and lowering actions, simulating the process of alternating lifting and stepping when climbing stairs, ensuring the continuity of climbing actions. The multi-ribbed belt 10 is used to link the two rollers 9, the tension adjustment component 8, the two resistance adjustment components 7, and the two lifting frames 5. When the two lifting frames 5 rotate, they will drive the resistance adjustment component 7 to rotate. The resistance adjustment component 7 is used to adjust the moving resistance of the two lifting frames 5. The tension adjustment component 8 is used to adjust the tension of the multi-ribbed belt 10. The rollers 9 change the transmission direction of the multi-ribbed belt 10 so that the multi-ribbed belt 10 can adapt to the internal space layout of the frame 1 and rationally plan the transmission path.

[0016] Specifically, refer to Figure 2-3 The resistance adjustment component 7 includes a mounting rod 71, rollers 72, a resistance plate 73, and a magnetic adjuster 74. The mounting rod 71 provides mounting support for rollers 72, resistance plate 73, etc. The three rollers 72 are located at the top of the mounting rod 71 to support and guide the multi-wedge belt 10, ensuring the stability of the transmission path of the multi-wedge belt 10. The resistance plate 73 is located on the uppermost roller 72 and rotates synchronously with the roller 72. Its rotational resistance can be adjusted by the magnetic adjuster 74.

[0017] Specifically, refer to Figure 4 The tension adjustment component 8 includes two adjusting screws 81, a stop block 82, a spring 83, and a roller 84. The adjusting screws 81 are threaded through the bottom of the frame 1. By rotating the adjusting screws 81, their extension length within the frame 1 can be changed, thereby adjusting the position of the roller 84. The roller 84 is rotatably mounted on the top of the two adjusting screws 81 to support the multi-wedge belt 10 and participate in the transmission. The stop block 82 is located at the bottom of the adjusting screws 81, limiting the adjusting screws 81 from excessively screwing into the frame 1, and providing mounting support for the spring 83. The spring 83 is sleeved on the outer wall of the adjusting screws 81, with its two ends connected to the bottom of the frame 1 and the top of the stop block 82, respectively. On the one hand, it uses its own elasticity to provide continuous tension to the multi-wedge belt 10; on the other hand, it assists in stabilizing the adjustment process when the adjusting screws 81 are manually adjusted, making the tension adjustment smoother.

[0018] Specifically, refer to Figure 5The magnetic force adjuster 74 further refines the resistance adjustment function; the mounting bracket 741 is sleeved on the edge of the resistance plate 73, providing a mounting base for the magnetic force adjustment component; the sliding sleeve 742 is installed on the outer wall of the mounting bracket 741, serving as a guide structure for the sliding of the lifting plate 743; the lifting plate 743 can slide through the sliding sleeve 742, and its position within the sliding sleeve 742 can be fixed by the fixing screw 744, thereby adjusting the relative position and magnetic force intensity between the magnetic plate 747 and the resistance plate 73; two limit rods 745 can slide through the mounting bracket 741, limiting the sliding of the lifting plate 743. To ensure stable movement, a spring 746 is fitted onto the outer wall of the limit rod 745, with its two ends connected to the lifting plate 743 and the mounting bracket 741 respectively. This spring can assist the lifting plate 743 in resetting or provide elastic buffering when the fixing screw 744 is loosened. Three magnetic plates 747 are respectively set on the top of the two limit rods 745 and inside the mounting bracket 741. Utilizing the principle of magnetic repulsion and attraction between like poles, the magnetic resistance experienced by the resistance plate 73 when rotating is adjusted by changing the distance between the magnetic plate 747 and the resistance plate 73 and the magnitude of the magnetic force, ultimately achieving precise adjustment of the moving resistance of the lifting frame 5.

[0019] Specifically, refer to Figure 1 The bottom wall of the inner cavity of the slide 4 is provided with shock-absorbing blocks 12. The shock-absorbing blocks 12 have a honeycomb structure. Utilizing the good buffering and energy absorption characteristics of the honeycomb structure, when the lifting frame 5 moves to the bottom of the slide 4, it can effectively absorb the impact force generated by the falling of the lifting frame 5, reduce equipment vibration, protect the lifting frame 5, pulleys 6 and other components, extend their service life, and at the same time improve the stability and comfort of the stair climber during operation.

[0020] Specifically, refer to Figure 1-4 The wheel frames on roller 1 (9), roller 2 (72), and roller 3 (84) are respectively provided with guide grooves for the wheels to slide out. The guide grooves are L-shaped and facilitate the sliding of the rolling bodies of rollers 1, 2, and 3 out of the wheel frame. When the wheels are worn or malfunction, maintenance personnel can quickly remove the wheels from the guide grooves for replacement and maintenance, which greatly improves the convenience of equipment maintenance and reduces maintenance difficulty and time costs.

[0021] Working principle When a user steps on the foot pedal of one of the lifting frames 5, the lifting frame 5 is subjected to a downward force and slides down along the slide groove 4, driving the multi-wedge belt 10 to move through the clamping block 11. The multi-wedge belt 10 is driven in a closed loop. Since it is also connected to the other lifting frame 5 through the clamping block 11, it will synchronously drive the other lifting frame 5 to slide up along the slide groove 4, realizing the alternating lifting and lowering action of the two lifting frames 5, simulating the process of alternating lifting and stepping on the feet when climbing stairs. During this process, the roller 1 9, the roller 2 72 of the resistance adjustment component 7, and the roller 3 84 of the tension adjustment component 8 rotate with the movement of the multi-wedge belt 10, changing the transmission direction and assisting the transmission. When the lifting frame 5 drives the multi-wedge belt 10, the resistance plate 73 in the resistance adjustment component 7 rotates with the roller 72. The magnetic force adjuster 74 can change the magnetic resistance when the resistance plate 73 rotates by adjusting the relative position and magnetic force of the magnetic plate 747 and the resistance plate 73. For example, when it is necessary to increase the resistance, the position of the lifting plate 743 can be adjusted by fixing the screw 744 to make the magnetic plate 747 closer to the resistance plate 73, thereby increasing the magnetic force. The resistance plate 73 will be more obstructed from rotating, which will increase the transmission resistance of the multi-wedge belt 10, and ultimately increase the movement resistance of the lifting frame 5. Conversely, reducing the magnetic force distance and intensity can reduce the movement resistance of the lifting frame 5, so as to simulate different intensities of stair climbing resistance for training and other scenarios. The tension adjusting component 8 achieves tension adjustment of the multi-ribbed belt 10 through the elastic force of spring 83 and the manual adjustment of adjusting screw 81. During normal operation, the elastic force of spring 83 continuously acts on stop block 82, which is transmitted to roller 84 through adjusting screw 81, so that roller 84 applies tension to multi-ribbed belt 10, ensuring that multi-ribbed belt 10 is in a proper tension state. If manual precise adjustment is required, adjusting screw 81 can be rotated to change its extension length in frame 1, thereby adjusting the position of roller 84, realizing active adjustment of the tension of multi-ribbed belt 10, and keeping it in a tight state.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pedal transmission mechanism for a stair climber, characterized in that, Includes a frame (1); the frame (1) is provided with a crossbeam (2) and a vertical beam (3); the left and right sides of the vertical beam (3) and the left and right side walls of the inner cavity of the frame (1) are respectively provided with grooves (4); Two lifting frames (5) are slidably mounted inside the grooves (4) on the frame (1) and the vertical beam (3) respectively via pulleys (6). Foot pedals are installed on the lifting frames (5). Two resistance adjustment components (7) are set on the back of the vertical beam (3); Tension adjustment component (8) is set inside frame (1); Two rollers (9) are respectively set at the bottom of the crossbeam (2); The multi-ribbed belt (10) passes over two rollers (9), tension adjustment component (8) and two resistance adjustment components (7) in sequence, and the two lifting frames (5) are fixed on the multi-ribbed belt (10) by clamps (11); The multi-wedge belt (10) is used to enable the two rollers (9), tension adjustment component (8), two resistance adjustment components (7) and two lifting frames (5) to work together. When the two lifting frames (5) rotate, they will drive the resistance adjustment component (7) to rotate. The resistance adjustment component (7) is used to adjust the moving resistance of the two lifting frames (5). The tension adjustment component (8) is used to adjust the tension of the multi-wedge belt (10).

2. The pedal transmission mechanism of the stair climber according to claim 1, characterized in that, The resistance adjustment component (7) includes a mounting rod (71) disposed on the back of the vertical beam (3); three rollers (72) respectively disposed on the top of the mounting rod (71); a resistance plate (73) disposed on the uppermost roller (72); and a magnetic adjuster (74) disposed on the mounting rod (71) and sleeved on the edge of the resistance plate (73).

3. The pedal transmission mechanism of the stair climber according to claim 2, characterized in that, The tension adjustment component (8) includes two adjusting screws (81) threaded through the bottom of the frame (1); a stop block (82) set at the bottom of the adjusting screw (81); a spring (83) sleeved on the outer wall of the adjusting screw (81) and connected at both ends to the bottom of the frame (1) and the top of the stop block (82) respectively; and a roller (84) rotatably set at the top of the two adjusting screws (81).

4. The pedal transmission mechanism of the stair climber according to claim 2, characterized in that, The magnetic adjuster (74) includes a mounting bracket (741) mounted on the mounting rod (71) and sleeved on the edge of the resistance plate (73); a sliding sleeve (742) mounted on the outer wall of the mounting bracket (741); a lifting plate (743) slidably passing through the sliding sleeve (742); a fixing screw (744) mounted on the mounting bracket (741) and used to fix the lifting plate (743); two limiting rods (745) slidably passing through the mounting bracket (741); two springs (746) sleeved on the outer wall of the limiting rods (745) and connected at both ends to the lifting plate (743) and the mounting bracket (741) respectively; and three magnetic plates (747) mounted on the top of the two limiting rods (745) and inside the mounting bracket (741).

5. The pedal transmission mechanism of the stair climber according to claim 1, characterized in that, The bottom wall of the inner cavity of the groove (4) is provided with a shock-absorbing block (12), which has a honeycomb structure.

6. The pedal transmission mechanism of the stair climber according to claim 3, characterized in that, The wheel frames on roller 1 (9), roller 2 (72) and roller 3 (84) are respectively provided with guide grooves for the wheel body to slide out, and the guide grooves are L-shaped.

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