An adjustable slope and stride elliptical trainer

Abstract

The utility model discloses an adjustable gradient and step's oval training machine, including frame and be located on the carousel of frame, the frame includes base and stand, the both sides articulated of stand have handrail connecting rod, the lower end articulated of handrail connecting rod have footboard connecting rod, be equipped with the rotating wheel that can revolve around carousel and axis parallel on carousel, the footboard connecting rod is away from one end of handrail connecting rod and is put on the outer circular surface of rotating wheel upper end, the footboard connecting rod is close to one end of handrail connecting rod and is slidably supported on base, the base includes respectively corresponding the first base and second base of footboard connecting rod length direction both ends, the first base and second base between can make the footboard connecting rod one end that slidably supported on the first base is lifted upward with the mode of relative bending to improve the overall gradient of footboard connecting rod. The utility model has the advantages of being capable of guaranteeing the safety performance while adapting the diversified training demand.

Description

Technical Field

[0001] This utility model belongs to the field of elliptical machine technology, and in particular relates to an elliptical training machine with adjustable incline and stride. Background Technology

[0002] To improve physical fitness or speed up recovery, users typically train using elliptical trainers.

[0003] For example, Chinese Patent Application No. 201920482755.8 discloses an elliptical machine, including a cantilever, a foot pedal assembly connected to the cantilever, a crank, a connecting rod, and rollers. A drive shaft is provided on the crank, and one end of the rollers and one end of the connecting rod are both sleeved on the drive shaft. The other end of the connecting rod is connected to the cantilever, and the foot pedal assembly is connected to the rollers.

[0004] The range of motion and tilt angle of the elliptical trainer mentioned above are usually fixed, resulting in a single motion trajectory and resistance mode. It is impossible to specifically adjust the motion angle and torque of the lower limb joints (such as hip, knee, and ankle), making it difficult to adapt to the diverse training needs of different users. Furthermore, due to the lack of an incline adjustment mechanism, users cannot simulate real exercise scenarios such as climbing, sprinting, or changing speed through incline changes, resulting in a monotonous training mode. It is difficult to accurately adapt to different training goals such as cardiorespiratory endurance, explosive power, or muscular endurance, thus limiting the training effect and applicable scenarios, and resulting in poor usage. Summary of the Invention

[0005] To address the shortcomings of existing technologies, an elliptical training machine with adjustable incline and stride is provided.

[0006] This utility model is achieved using the following technical solution:

[0007] An adjustable elliptical trainer with adjustable incline and stride includes a frame and a turntable mounted on the frame. The frame includes a base and a column. Handrails are hinged to both sides of the column, and foot pedals are hinged to the lower ends of the handrails. The turntable has a rotating wheel that can revolve around the turntable and has a parallel axis. The end of the foot pedal away from the handrail rests on the upper end of the outer circumference of the rotating wheel, and the end of the foot pedal near the handrail is slidably supported on the base. The base includes a first base and a second base corresponding to the two ends of the foot pedal along its length. The first and second bases can be bent relative to each other, allowing the end of the foot pedal supported on the first base to be raised upward to increase the overall incline of the foot pedal.

[0008] The turntable can be any existing flywheel, disc, or other rotating component capable of self-rotation, used to enable the foot pedal linkage to move along an elliptical trajectory.

[0009] The first base and the second base can be the same support base structure with the same volume and composition, or they can be an inverted T-shaped support base structure with the first base or the second base hinged to the surface of another base.

[0010] When a user needs to increase the overall slope of the pedal linkage to simulate real-world motion scenarios such as climbing, sprinting, or shifting gears, the first and second bases are bent relative to each other, causing the first base to flip and swing upwards. Since the front end of the pedal linkage is slidably supported on the upper side of the first base, the pedal linkage tilts upwards as long as the position of the rotating wheel remains unchanged, thereby increasing the overall slope of the pedal linkage.

[0011] When the user steps on the pedal linkage, the rear end of the pedal linkage rests on the upper end of the outer circumference of the rotating wheel, achieving a relative hinge between the two. This allows the pedal linkage to move relative to the rotating wheel in the front-back direction, increasing the range of motion of the pedal assembly.

[0012] The first base can be automatically fixed by placing a support structure under the first base or by snapping the first base with the column, or by lifting the first base with external force to place the first base at different heights.

[0013] Preferably, an adjusting rod is also hinged between the handrail link and the foot pedal link, with one end of the adjusting rod hinged to the lower end of the handrail link and the other end of the adjusting rod hinged to the front end of the foot pedal link.

[0014] By setting an adjustment link, the slope of the foot pedal link is increased to prevent it from affecting the forward tilt of the handrail link, which would cause the user's center of gravity to lean backward and create a safety hazard.

[0015] Preferably, a support link is provided between the handrail link and the rotating wheel. One end of the support link is hinged to the lower part of the side surface of the handrail link away from the rotation axis, and the other end of the support link is hinged to the axis of the rotating wheel.

[0016] The support linkages provide auxiliary limiting for the spacing between the rotating wheels of the handrail linkages, and provide protective support for the foot pedal linkages from below, preventing the user from falling instantly due to the breakage of the hinge shafts between the foot pedal linkages, adjustment linkages, and handrail linkages, thereby improving the safety performance of this device.

[0017] Preferably, the base includes a fixed base fixedly resting on the ground and a flip base hinged to the fixed base. The fixed base is formed by two parallel first crossbeams and two parallel first longitudinal beams. The flip base is formed by two parallel second crossbeams and two parallel second longitudinal beams. One of the second crossbeams is close to the first crossbeam located at the front, and the other second crossbeam is hinged to the middle of the two first longitudinal beams. The fixed base corresponds to the rear end of the pedal linkage, and the flip base corresponds to the front end of the pedal linkage.

[0018] By setting a flip base and a fixed base and making them correspond to the two ends of the pedal link in the length direction, a first base for lifting the front end of the pedal link and a second base for supporting the rear end of the pedal link are formed. The flip base is hinged to the fixed base and flipped relative to it, thereby achieving relative bending between the first base and the second base, thus applying an upward force to the front end of the pedal link.

[0019] Preferably, a support roller is provided on the lower side of one end of the foot pedal link near the handrail link. The support roller can roll along the length of the second longitudinal beam and support the foot pedal link, thereby converting the sliding friction between the foot pedal link and the second longitudinal beam into rolling friction, thus reducing friction noise during use.

[0020] Preferably, when the flip base swings upward and flips, the flip base is lifted upward and supports the foot pedal link through the support roller, so that the front end of the foot pedal link is higher than the rear end to increase the slope. Conversely, when the flip base swings downward and flips, the slope of the foot pedal link can be reduced.

[0021] Preferably, the column has support grooves arranged along the height direction, and the support grooves are directly opposite the second crossbeam located at the front end. The second crossbeam has a sliding pin in a direction perpendicular to its own axis. The end of the sliding pin away from the second crossbeam has a positioning pin that can engage with the support groove, thereby supporting the second crossbeam and fixing the tilt angle of the flip base.

[0022] When the sliding pin is inserted into the support groove, the flip base is in a locked state.

[0023] The support groove can be a structure that is independently set on the column, or it can be a groove-shaped structure that is opened on the column.

[0024] Preferably, the sliding pin includes a fixed sleeve fixedly disposed within the second crossbeam and a sliding sleeve slidably disposed within the fixed sleeve, with an elastic element provided between the sliding sleeve and the fixed sleeve, and the positioning pin fixedly disposed at the rear end position of the slide sleeve.

[0025] When the control sliding sleeve slides away from the column, the positioning pin disengages from the support groove, and the flip base is in the unlocked state.

[0026] Preferably, the opening of the support groove is inclined upward. When the flip base swings upward, the force between the upper wall of the support groove and the outer circular surface of the positioning pin can overcome the elastic force of the elastic element, so that the slide sleeve slides in the axial direction.

[0027] By setting the opening of the support groove to be inclined upward, the axial component of the force applied to the positioning pin by the support groove is increased. This allows the flip base to unlock the positioning pin from the support groove by actively flipping it, so that the flip base can be lifted without unlocking, making it easier for users to increase the slope. It also causes the gravity applied by the positioning pin to generate an oblique component along the bottom wall of the support groove, preventing the positioning pin from falling off on its own in the embedded state and avoiding accidental contact by other personnel that could cause the positioning pin to detach from the support groove in the embedded state.

[0028] Preferably, the adjusting link and the foot pedal link are hinged together by a hinge shaft, the foot pedal link and the hinge shaft are fixedly connected, the outer circular surface of the hinge shaft away from the foot pedal link is provided with a hook, the adjusting link is provided with a swing space for the hook to swing, and a limiting rod is provided horizontally in the swing space, which is directly opposite the opening of the hook.

[0029] The rotation range of the hinge shaft is limited by the crossbar and the hook used in conjunction, which prevents the front end of the adjusting link from being lower than the rear end. This prevents the user's hands and feet from applying force in opposite directions, which could cause the tilt angle of the adjusting link to change instantly, causing the slope of the foot pedal link to change in a clockwise direction and creating a safety hazard.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] By placing the end of the foot pedal linkage on the upper side of the rotating wheel, the foot pedal linkage is made movable and hinged, allowing it to move relative to the rotating wheel in the forward and backward direction. Compared to a fixed hinge shaft, this increases the forward and backward movement range of the foot pedal assembly, thereby increasing the forward and backward stride range of the training machine. By rotating and flipping the base and supporting and fixing it, the front end of the foot pedal linkage is supported and lifted, thereby adjusting the slope of the foot pedal linkage and preventing the user's center of gravity from shifting backward due to the increased slope. This ensures safety while adapting to diverse training needs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an elliptical training machine with adjustable slope and stride according to the present invention.

[0033] Figure 2 A schematic diagram of the structure for concealing the foot pedal linkage and adjustment linkage on one side;

[0034] Figure 3 A structural diagram showing how to conceal the foot pedal linkage, adjustment linkage, and support linkage on one side;

[0035] Figure 4 This is a schematic diagram of the structure of the second crossbeam, positioning pin, and support groove located on the front side in this utility model;

[0036] Figure 5 This is an exploded structural diagram of the fixed sleeve and the sliding sleeve in this utility model;

[0037] Figure 6 This is a structural schematic diagram of the present invention viewed from below.

[0038] Figure 7 for Figure 6 A magnified structural diagram of point A in the middle.

[0039] Reference numerals: 1. Frame; 2. Column; 3. Turntable; 11. Handrail link; 12. Adjustment link; 121. Hinge shaft; 122. Swing space; 123. Hook; 124. Limiting rod; 13. Foot pedal link; 14. Foot pedal; 15. Support roller; 16. Support link; 17. Rotating wheel; 20. First crossbeam; 21. First longitudinal beam; 22. Second crossbeam; 23. Second longitudinal beam; 24. Horizontal tube; 25. Support plate; 26. Grip space; 27. Pull head; 28. Sliding sleeve; 29. ​​Positioning pin; 30. Thrust spring; 31. Fixed sleeve; 32. Upright plate; 33. Support groove; 34. Support tooth; 200. Fixed base; 201. Second base; 300. Flip-over base; 301. First base. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 7 As shown, this embodiment discloses an elliptical training machine with adjustable incline and stride, including a frame 1 and a turntable 3 mounted on the frame 1. The frame 1 includes a base and a column 2. Handrail links 11 are hinged to both sides of the column 2. The rotation axis of the handrail links 11 is located in the middle section. A foot pedal link 13 is hinged to the lower end of the handrail links 11. A foot pedal 14 is fixedly mounted on the upper end of the foot pedal link 13 to reduce the pressure on the user's feet. An adjustment link 12 is also hinged between the handrail links 11 and the foot pedal link 13. The front end of the adjustment link 12 is hinged to the lower end of the handrail links 11, and the rear end of the adjustment link 12 is hinged to the front end of the foot pedal link 13. The direction in which the user steps out when using this training machine is considered forward, and the direction in which the user retracts the step is considered backward.

[0042] The turntable 3 has the same structure as the prior art. The turntable 3 is equipped with a rotating wheel 17 that can revolve around the turntable 3 and whose axis is parallel. The end of the foot pedal link 13 away from the handrail link 11 rests on the upper end of the outer circle surface of the rotating wheel 17.

[0043] The adjusting link 12 and the foot pedal link 13 are hinged together by a hinge shaft 121. The foot pedal link 13 and the hinge shaft 121 are fixedly connected. A hook 123 is provided on the back side of the outer circular surface of the hinge shaft 121 away from the foot pedal link 13. The adjusting link 12 is provided with a swing space 122 for the hook 123 to swing. A limiting rod 124 is horizontally provided in the swing space 122, which is directly opposite the opening of the hook 123. The limiting rod 124 can abut against the hook 123, thereby limiting the rotation range of the hinge shaft 121.

[0044] A support link 16 is provided between the handrail link 11 and the rotating wheel 17. One end of the support link 16 is hinged to the lower side surface of the handrail link 11 away from the rotation axis, and the other end of the support link 16 is hinged to the axis of the rotating wheel 17.

[0045] The base includes a fixed base 200 fixedly placed on the ground and a flip base 300 hinged to the fixed base 200. The fixed base 200 is formed by two first crossbeams 20 and two first longitudinal beams 21 that are parallel to each other. The flip base 300 is formed by two second crossbeams 22 and two second longitudinal beams 23 that are parallel to each other. One of the second crossbeams 22 is close to the first crossbeam 20 located on the front side, and the other second crossbeam 22 is hinged to the middle section of the two first longitudinal beams 21.

[0046] A support roller 15 is provided on the lower side of the foot pedal link 13 near the handrail link 11. The support roller 15 can roll along the length direction of the second longitudinal beam 23 and support the foot pedal link 13, thereby allowing the end of the foot pedal link 13 near the handrail link 11 to slide and support on the flip base 300.

[0047] One part of the fixed base 200 is used to support the rear end of the pedal link 13, and the front end of the flip base 300 is used to support the front end of the pedal link 13, thereby forming a first base 301 and a second base 201 corresponding to the two ends of the pedal link 13 in the length direction.

[0048] When the flip base 300 swings and flips upward, the first base 301 and the second base 201 at both ends of the corresponding foot pedal link 13 in the length direction can be bent relative to each other. The flip base 300 is lifted upward and supports the foot pedal link 13 through the support roller 15, so that the front end of the foot pedal link 13 is higher than the rear end to raise the slope.

[0049] The front end of the column 2 is symmetrically provided with two upright plates 32. The two upright plates 32 are provided with support grooves 33 arranged along the height direction. The support grooves 33 are provided with support teeth 34 formed by the combination of the side walls of two adjacent grooves. The front end of the support teeth 34 is directly opposite the second crossbeam 22 located at the front end.

[0050] The second crossbeam 22 at the front end includes a horizontal tube 24 and a support plate 25 sleeved on both ends of the horizontal tube 24. The support plate 25 is semi-arc and protrudes towards the vertical plate 32. A gripping space 26 is formed between the support plate 25 and the horizontal tube 24 for the user to insert their fingers. A sliding pin is provided in the protruding part of the support plate 25, which is perpendicular to the axis of the horizontal tube 24. The end of the sliding pin away from the second crossbeam 22 is provided with a positioning pin 29 that can be engaged with the support groove 33. The end of the sliding pin near the horizontal tube 24 is provided with a pull head 27. The pull head 27 has a T-shaped structure, which makes it easier for the user to apply force.

[0051] The sliding pin includes a fixed sleeve 31 fixedly disposed in the horizontal tube 24 and a sliding sleeve 28 slidably disposed in the fixed sleeve 31. An elastic element is provided between the sliding sleeve 28 and the fixed sleeve 31. The elastic element is a thrust spring 30 sleeved on the outer surface of the sliding sleeve 28. The positioning pin 29 is fixedly disposed at the rear end of the slide sleeve.

[0052] The groove of the support groove 33 is inclined upward. When the flip base 300 swings upward, the force between the upper wall of the support groove 33 and the outer surface of the positioning pin 29 can overcome the elastic force of the elastic element so that the slide sleeve slides in the axial direction.

[0053] When the user steps on the foot pedal linkage 13, the rear end of the foot pedal linkage 13 rests on the upper end of the outer circular surface of the rotating wheel 17, realizing a relative movable hinge between the two, thereby allowing the foot pedal linkage 13 to undergo relative displacement in the front-back direction of the rotating wheel 17, increasing the front-back movement amplitude of the foot pedal 14.

[0054] When the user needs to increase the slope of the foot pedal linkage 13, the user holds the horizontal tube 24 to drive the second longitudinal beam 23 to rotate upward around the second horizontal beam 22 located at the rear. The outer surface of the positioning pin 29 abuts against the lower end face of the support tooth 34, thereby causing the positioning pin 29 to slide forward and compress the thrust spring 30. The sliding sleeve 28 slides axially relative to the fixed sleeve 31, unlocking the flip base 300, thereby flipping upward and using the second longitudinal beam 23 to lift the support roller 15, so that the front end of the foot pedal linkage 13 is higher than the rear end to increase the slope. When the positioning pin 29 moves into the next support groove 33, the thrust spring 30 pushes the sliding sleeve 28 to reset and causes the positioning pin 29 to re-embed into the support groove 33. The upper end face of the support tooth 34 supports the positioning pin 29 and increases the component force of the positioning pin 29 along the inclined plane in its tilt direction, so that the positioning pin 29 self-locks.

[0055] When the user needs to reduce the slope, first manually lift the flip base 300 to disengage the positioning pin 29 from the upper surface of the support tooth 34, and then drive the sliding sleeve 28 forward axially by pulling the head 27, thereby unlocking the positioning pin 29 from the support tooth 34. At this time, the flip base 300 can be swung downward.

Claims

1. An elliptical training machine with adjustable incline and stride, comprising a frame and a turntable mounted on the frame, the frame comprising a base and a column, handrail links hinged to both sides of the column, foot pedal links hinged to the lower ends of the handrail links, and a rotating wheel on the turntable capable of revolving around the turntable and having a parallel axis, characterized in that: The end of the foot pedal link away from the handrail link rests on the upper end of the outer circumference of the rotating wheel, and the end of the foot pedal link near the handrail link is slidably supported on the base. The base includes a first base and a second base corresponding to the two ends of the length direction of the foot pedal link, respectively. The first base and the second base can be bent relative to each other, so that the end of the foot pedal link slidably supported on the first base can be raised upward to increase the overall slope of the foot pedal link.

2. The elliptical training machine with adjustable incline and stride according to claim 1, characterized in that: An adjusting rod is also hinged between the handrail link and the foot pedal link. One end of the adjusting rod is hinged to the lower end of the handrail link, and the other end of the adjusting rod is hinged to the front end of the foot pedal link.

3. An elliptical training machine with adjustable incline and stride according to claim 2, characterized in that: A support link is also provided between the handrail link and the rotating wheel. One end of the support link is hinged to the lower part of the side surface of the handrail link away from the rotation axis, and the other end of the support link is hinged to the axis of the rotating wheel.

4. An elliptical training machine with adjustable incline and stride according to claim 1, 2, or 3, characterized in that: The base includes a fixed base that is fixedly placed on the ground and a flip base that is hinged to the fixed base. The fixed base is formed by two parallel first crossbeams and two parallel first longitudinal beams. The flip base is formed by two parallel second crossbeams and two parallel second longitudinal beams. One of the second crossbeams is close to the first crossbeam located on the front side, and the other second crossbeam is hinged to the middle of the two first longitudinal beams. The fixed base corresponds to the rear end of the foot pedal linkage, and the flip base corresponds to the front end of the foot pedal linkage.

5. An elliptical training machine with adjustable incline and stride according to claim 4, characterized in that: The foot pedal link is provided with a support roller on the lower side of one end near the handrail link. The support roller can roll along the length of the second longitudinal beam and support the foot pedal link.

6. An elliptical training machine with adjustable incline and stride according to claim 5, characterized in that: When the flip base swings and flips upward, the flip base is lifted upward and supports the foot pedal link through the support roller, so that the front end of the foot pedal link is higher than the rear end to increase the slope.

7. An elliptical training machine with adjustable incline and stride according to claim 6, characterized in that: The column has support grooves arranged along the height direction. The support grooves are directly opposite the second crossbeam located at the front end. The second crossbeam has a sliding pin perpendicular to its own axis. The end of the sliding pin away from the second crossbeam has a positioning pin that can engage with the support groove.

8. An elliptical training machine with adjustable incline and stride according to claim 7, characterized in that: The sliding pin includes a fixed sleeve fixedly disposed within the second crossbeam and a sliding sleeve slidably disposed within the fixed sleeve. An elastic element is provided between the sliding sleeve and the fixed sleeve, and the positioning pin is fixedly disposed at the rear end position of the sliding sleeve.

9. An elliptical training machine with adjustable incline and stride according to claim 8, characterized in that: The opening of the support groove is inclined upward. When the flip base swings upward, the force between the upper wall of the support groove and the outer circular surface of the positioning pin can overcome the elastic force of the elastic element so that the slide sleeve slides in the axial direction.

10. An elliptical training machine with adjustable incline and stride according to claim 9, characterized in that: The adjusting link and the foot pedal link are hinged together by a hinge shaft. The foot pedal link and the hinge shaft are fixedly connected. The hinge shaft has a hook on the back side of its outer circular surface away from the foot pedal link. The adjusting link has a swing space for the hook to swing. A limiting rod is horizontally provided in the swing space, which is directly opposite the opening of the hook.

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