A foldable elliptical machine

Abstract

The utility model discloses a kind of foldable elliptical machines, including bottom support, column and carousel being arranged on the bottom support, the both ends of the column are hinged with swing arm, the lower end of the swing arm is hinged with foot pedal, the bottom support includes the first support and the second support by hinging shaft relative hinging, the axis direction of its hinging shaft is parallel to the width direction of the bottom support, the second support extends support arm to the first support, the positioning side plate with support hole position is equipped on the support arm, the first support is equipped with the support pin shaft for being embedded with the support hole position, when the first support and the second support are in folding state, the support pin shaft can resist the shear stress of the positioning side plate by its structural strength. The utility model has the advantages of being able to eliminate swing allowance, to ensure the structural stability of elliptical machine use / storage.

Description

Technical Field

[0001] This utility model belongs to the field of elliptical machine technology, and in particular relates to a foldable elliptical machine. Background Technology

[0002] The elliptical trainer is a common indoor fitness equipment for cardiovascular exercise.

[0003] Chinese patent application No. 201310440237.7 discloses a folding elliptical machine, including a frame, a damping device mounted on the frame, a head unit mounted above the damping device, and a rocking foot device positioned between the frame, the head unit, and the damping device. Two guide rails are rotatably connected to the rear support tube at the rear of the frame, and a folding fixing rod is connected to the rear end of each guide rail. The rocking foot device includes a sliding tube, a foot pedal tube, and a rocker arm. The front end of the sliding tube is rotatably connected to the damping device, and the rear end is slidably connected to the guide rails. A folding fixing seat is welded to the lower rear of the sliding tube, and a T-shaped locking hole is provided on the folding fixing seat, with the opening facing the inside of the sliding tube. The locking hole can be precisely matched and locked with the folding fixing rod on the guide rail.

[0004] In the above technical solution, the elliptical machine is folded by matching and locking the folding fixing rod with the T-shaped locking hole on the folding fixing seat. However, in the above technical solution, the guide rail is rotated through a hinge structure, and its rotation direction is perpendicular to the lateral entrance direction of the locking hole. Due to the shape design of the locking hole, the folding fixing rod needs to swing laterally along the lateral entrance of the locking hole to the inside of the buckle before matching and locking can be completed. This causes irreversible damage to the front end of the guide rail during the locking action, affecting the service life of the guide rail. Furthermore, due to the sliding track-type structure formed locally in the internal diameter of the locking hole, the guide rail can still swing slightly back and forth after matching and locking, resulting in poor stability of the device after folding. Summary of the Invention

[0005] To address the shortcomings of existing technologies, a foldable elliptical machine is provided.

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

[0007] A foldable elliptical trainer includes a base support, a column and a turntable mounted on the base support. The column has swing arms hinged to both ends, and foot pedals are hinged to the lower ends of the swing arms. The base support includes a first support and a second support hinged to each other via a hinge axis parallel to the width direction of the base support. The second support extends a support arm towards the first support, and the support arm has a positioning side plate with support holes. The first support has a support pin for engaging with the support holes. When the first and second supports are folded, the support pin can withstand the shear stress of the positioning side plate through its own structural strength.

[0008] When the user needs to fold the elliptical machine, manually pull the support pin out of the support hole. At this time, the positioning side plate is in the unlocked state. Lift the second bracket upward so that it swings only in the circumferential direction. The second bracket lifts the foot pedal upward and folds it synchronously towards the side closer to the column. After the second bracket is folded to the limit position, reinsert the support pin into the support hole. The structural strength of the support pin itself resists the shear stress of the positioning side plate, thereby ensuring the stability of the second bracket after folding.

[0009] Preferably, there are two support holes, which correspond to the relative spatial positions of the support pins when the second bracket is in a folded / flat state.

[0010] By setting two support holes, the first and second supports can be fixed and limited by the support pins when they are in the folded / flat state, thereby preventing relative rotation between the first and second supports and affecting the structural stability of the elliptical machine during use / storage.

[0011] Preferably, the second bracket is provided with a tension mechanism, which is arranged along the length of the second bracket. When the user provides a tension force along the length of the second bracket to the tension mechanism, the tension mechanism can cause the support pin to slide in the axial direction and disengage from the support hole through the action of the force.

[0012] The tension mechanism reverses the tension applied by the user, making it easier for the user to pull the support pin out of the support hole.

[0013] Preferably, a resistance element is provided between the support arm and the first bracket. The resistance direction of the resistance element is opposite to the movement direction of the second bracket near the end of the first bracket when the second bracket falls. In this way, the resistance of the resistance element reduces the force required for the user to place the second bracket, thereby making it easier for the user to ensure the stability of the second bracket when it is placed flat, and preventing the user from dropping the second bracket due to its weight.

[0014] Preferably, the foot pedal includes a foot pedal linkage and a foot pedal disposed on the foot pedal linkage, thereby facilitating the user to step on it and reducing the pressure on the user's feet.

[0015] Preferably, the turntable is hinged with a crank and a driven link hinged to the end of the crank. The driven link is located near the foot pedal link. The driven link and the foot pedal link are fixed together by the foot pedal mounting bracket. This allows the turntable to be used in combination with the foot pedal and the foot pedal link, so that the foot pedal moves in an elliptical motion trajectory to assist the user in exercising.

[0016] Preferably, the second bracket has two guide rails on both sides in the width direction, and the driven link is pivotally connected to a driven wheel at its end. The driven wheel can cooperate with the guide rails and roll along the length direction of the guide rails.

[0017] By allowing the driven link to slide relative to the guide rail, compared to the existing design that hinges the driven link to the guide rail, the step distance during pedal movement can be increased, thereby improving the user's exercise effect.

[0018] Preferably, the positioning side plate has a fan-shaped structure, and the two support holes are located on both sides of the circumference of the positioning side plate. A limiting slide is also provided at one end of the positioning side plate near the axis. The first bracket is provided with a limiting slide rod that can pass through the limiting slide, thereby limiting the relative swing trajectory of the positioning side plate and helping to improve the stability of the support arm during the swing process.

[0019] Preferably, the pulling mechanism includes a handle, a crossbar, a pull wire, and a fixing frame fixed to the first bracket on the side facing away from the positioning side plate. The crossbar is horizontally arranged in the width direction of the handle. One end of the pull wire is clamped in the crossbar through a connecting post. The other end of the pull wire passes through the inner side of the second bracket and the fixing frame and is connected to the axial end of the support pin. The axial front end of the support pin is vertically wedged into the first bracket and cooperates with the support hole.

[0020] The fixed bracket reverses the direction of the tension in the cable, ensuring that the direction of the tension is collinear with the axis of the support pin. This prevents the support pin from shifting when pulled, which would increase wear and affect its service life.

[0021] Preferably, the guide rail is provided with an angle adjustment mechanism, and the guide rail is hinged to the second bracket through the angle adjustment mechanism to realize the negative angle adjustment of the foot pedal linkage, so that the user can adjust the tilt angle of the foot pedal linkage according to his / her own training needs, thereby adapting to the user's diverse training needs.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] By rigidly engaging the axially sliding support pin with the positioning side plate, a zero-backlash self-locking system is formed. This ensures that the first and second supports are fixed and limited by the support pin when in a folded / flat state, eliminating the swing margin of traditional snap-fit ​​structures. This prevents relative rotation between the first and second supports and avoids affecting the structural stability of the elliptical machine during use / storage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a foldable elliptical machine according to the present invention.

[0025] Figure 2 for Figure 1 A structural diagram from another angle;

[0026] Figure 3 This is a schematic diagram of the structure of the first and second supports in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the supporting pin and the positioning side plate in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the angle adjustment mechanism in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of this utility model in its folded and stored state;

[0031] Figure 8 for Figure 7 A structural diagram from another angle in the same state.

[0032] Reference numerals: 11. Column; 12. Bottom bracket; 13. Turntable; 14. First hinge shaft; 15. Swing arm; 16. Foot pedal linkage; 17. Foot pedal; 18. Crank; 19. Driven linkage; 21. First bracket; 22. Second bracket; 23. Support arm; 24. Support riser; 25. Positioning side plate; 26. Support hole; 27. Limiting slide; 271. Limiting slide rod; 28. Support pin; 29. ​​Guide rail; 30. Driven wheel; 31. Handle; 32. Crossbar; 33. Notch; 34. Pull cable; 35. Shelf plate; 36. Cable clip; 37. Connecting column; 371. Step; 40. Gas spring; 41. Angle adjustment mechanism; 42. Linkage assembly; 43. Adjustment slot; 44. Locking element. Detailed Implementation

[0033] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 8 As shown, this embodiment discloses a foldable elliptical machine, including a bottom support 12, a column 11 disposed on the bottom support 12, and a turntable 13. The two ends of the column 11 are connected to a swing arm 15 through a first hinge shaft 14. The first hinge shaft 14 is located in the middle section of the swing arm 15, so that the upper end of the swing arm 15 forms a handrail for the user. The lower end of the swing arm 15 is hinged to a foot pedal, which includes a foot pedal link 16 and a foot pedal 17 mounted on the foot pedal link 16.

[0035] A crank 18 is hinged to the turntable 13, and a driven link 19 is hinged to the end of the crank 18. The driven link 19 is located on the side close to the foot pedal link 16 and is fixed to the foot pedal link 16 by the mounting bracket of the foot pedal 17, so that the driven link 19 and the foot pedal link 16 swing synchronously. Two guide rails 29 are provided on both sides of the second bracket 22 in the width direction. The end of the driven link 19 is pivotally connected to a driven wheel 30. The driven wheel 30 cooperates with the guide rail 29 and can roll along the length direction of the guide rail 29, thereby increasing the step distance of the foot pedal 17 during movement.

[0036] The first bracket 21 is provided with a support tube 24 parallel to the column 11. The bottom bracket 12 includes a first bracket 21 and a second bracket 22 that are hinged to each other by a second hinge shaft. The axis of the second hinge shaft is parallel to the width direction of the bottom bracket 12 and passes through the support tube 24 laterally. The second bracket 22 extends towards the first bracket 21 and is provided with a support arm 23. The support arm 23 is curved and its front end extends towards the upper end of the support tube 24. A positioning side plate 25 is fixedly installed at the front end of the support arm 23. Two support holes 26 are opened on the positioning side plate 25. A support pin 28 passes through the upper end of the support tube 24 laterally.

[0037] The positioning side plate 25 has a fan-shaped structure with two support holes 26, which correspond to the positions where the support pin 28 needs to be inserted when the second bracket 22 is in the folded or flat state. To further guide the swing trajectory of the positioning side plate 25, a limiting slide 27 is provided at one end of the positioning side plate 25 near the axis. The first bracket 21 is provided with a limiting slide rod 271, which passes through the limiting slide 27, thereby constraining the swing range of the support arm 23 and improving the stability during folding and unfolding.

[0038] In the folded or unfolded state, the support pin 28 can be embedded in the corresponding support hole 26 to achieve relative locking between the first bracket 21 and the second bracket 22. When the first bracket 21 and the second bracket 22 are in the folded state, the support pin 28 can resist the tangential stress transmitted by the positioning side plate 25 by its own structural strength, ensuring the stability of the structure between the first bracket 21 and the second bracket 22.

[0039] The second bracket 22 is equipped with a tension mechanism arranged along the length of the second bracket 22. When the user applies a tension force along the length of the second bracket 22 to the tension mechanism, the support pin 28 can be driven to slide along its axial direction, causing it to exit from the support hole 26, thereby unlocking it and facilitating folding or unfolding operations. The tension mechanism includes a handle 31, a crossbar 32, a pull wire 34, and a fixing frame fixed to the first bracket 21. The crossbar 32 is arranged on both sides of the handle 31 in the width direction. The axial front end of the support pin 28 is embedded in the first bracket 21 and cooperates with the support hole 26.

[0040] The fixing frame includes a frame plate 35 and a wire clamp 36 fixedly installed on the side of the support riser 24. The wire clamp 36 includes a vertical section parallel to the length direction of the second bracket 22 and a horizontal section perpendicular to the vertical section. The horizontal section and the vertical section are transitioned by an arc section. Both ends of the pull wire 34 are fixedly provided with connecting posts 37. The outer circular surface of the connecting post 37 is provided with a step portion 371. The crossbar 32 is provided with a notch 33. One end of the pull wire 34 is clamped into the notch 33 of the crossbar 32 through the step portion 371 of the connecting post 37. The other end passes through the inside of the second bracket 22, the frame plate 35, and the wire clamp 36 and is connected to the axial end of the support pin 28 to ensure that the direction of the tension is collinear with the axis of the support pin 28 and avoid eccentric wear.

[0041] The fixed frame is equipped with a reset spring for resetting the pull wire 34. The reset spring has the same setting position and structure as the prior art. The reset spring can be set between the axial end face of the connecting column 37 and the frame plate 35, or between the fixed sleeve set on the outside of the support pin 28 and the outer circular surface of the support pin 28. No limitation is made here.

[0042] A resistance element, namely a gas spring 40, is also provided between the support arm 23 and the first bracket 21. The resistance direction of the gas spring 40 is opposite to the movement direction of the end of the second bracket 22 near the first bracket 21 during the lowering process. This is used to buffer the falling speed of the second bracket 22, reduce the force required for user operation, improve the controllability and safety of the placement process, and prevent the second bracket 22 from falling rapidly or slipping out of the user's hands due to its own weight.

[0043] The guide rail 29 is equipped with an angle adjustment mechanism 41 that is identical to the existing technology structure. The angle adjustment mechanism 41 includes a connecting rod assembly 42, an adjustment slot 43, and a locking element 44. The guide rail 29 is hinged to the second bracket 22 through the angle adjustment mechanism 41, so that the user can adjust the tilt angle of the guide rail 29, thereby realizing the negative angle adjustment function of the foot pedal linkage 16 and meeting the diverse training needs of different users.

[0044] When in use, the first support 21 and the second support 22 are in a flat position. The return spring keeps the support pin 28 in the support hole 26 through its elasticity. At this time, under the action of the support pin 28, the first support 21 and the second support 22 remain horizontal, eliminating the swing margin of the column 11 and preventing the column 11 from shaking, thus ensuring the stability of the elliptical machine during use.

[0045] When the user needs to fold the elliptical machine, they manually pull the handle 31. The handle 31 drives the pull cable 34 to pull the support pin 28 out of the support hole 26. At this time, the positioning side plate 25 is in the unlocked state. The second bracket 22 is lifted up so that it swings upward around the second hinge axis. The second bracket 22 lifts the foot pedal and folds it towards the side closer to the column 11. After the second bracket 22 is folded to the limit position, the handle 31 is released. The return spring causes the support pin 28 to re-insert into the support hole 26. The structural strength of the support pin 28 itself resists the shear stress of the positioning side plate 25, thereby ensuring the stability of the second bracket 22 after folding.

Claims

1. A foldable elliptical trainer, comprising a base support, a column and a turntable mounted on the base support, wherein swing arms are hinged to both ends of the column, and foot pedals are hinged to the lower ends of the swing arms; the base support includes a first support and a second support hinged to each other via a hinge axis, wherein the axis of the hinge axis is parallel to the width direction of the base support, characterized in that: The second bracket extends a support arm toward the first bracket. The support arm is provided with a positioning side plate with a support hole. The first bracket is provided with a support pin for engaging with the support hole. When the first bracket and the second bracket are in a folded state, the support pin can resist the shear stress of the positioning side plate through its own structural strength.

2. The foldable elliptical machine according to claim 1, characterized in that: The support hole is provided in two positions, and each position corresponds to the relative spatial position of the support pin when the second bracket is in the folded / flat state.

3. A foldable elliptical machine according to claim 2, characterized in that: The second bracket is equipped with a tension mechanism, which is arranged along the length of the second bracket. When the user provides a tension force along the length of the second bracket to the tension mechanism, the tension mechanism can cause the support pin to slide in the axial direction and disengage from the support hole through the action of the force.

4. A foldable elliptical machine according to claim 1, 2, or 3, characterized in that: A resistance element is also provided between the support arm and the first bracket, and the resistance direction of the resistance element is opposite to the movement direction of the second bracket near the end of the first bracket when the second bracket falls.

5. A foldable elliptical machine according to claim 4, characterized in that: The foot pedal includes a foot pedal linkage and a foot pedal disposed on the foot pedal linkage.

6. A foldable elliptical machine according to claim 5, characterized in that: A crank and a driven link hinged to the end of the crank are mounted on the turntable. The driven link is located near the foot pedal link and is fixed to the foot pedal link by a mounting bracket of the foot pedal.

7. A foldable elliptical machine according to claim 6, characterized in that: The second bracket has two guide rails on both sides in the width direction. The driven link is pivotally connected to a driven wheel at its end. The driven wheel can cooperate with the guide rails and roll along the length direction of the guide rails.

8. A foldable elliptical machine according to claim 7, characterized in that: The positioning side plate has a fan-shaped structure, and the two support holes are located on both sides of the circumference of the positioning side plate. A limiting slide is also provided at one end of the positioning side plate near the axis, and a limiting slide rod that can pass through the limiting slide is provided on the first bracket.

9. A foldable elliptical machine according to claim 8, characterized in that: The tensioning mechanism includes a handle, a crossbar, a pull wire, and a fixing frame fixed to the first bracket on the side facing away from the positioning side plate. The crossbar is horizontally arranged in the width direction of the handle. One end of the pull wire is clamped into the crossbar through a connecting post. The other end of the pull wire passes through the inner side of the second bracket and the fixing frame and is connected to the axial end of the support pin. The axial front end of the support pin is vertically wedged into the first bracket and cooperates with the support hole.

10. A foldable elliptical machine according to claim 9, characterized in that: The guide rail is equipped with an angle adjustment mechanism, and the guide rail is hinged to the second bracket through the angle adjustment mechanism to realize the negative angle adjustment of the foot pedal linkage.

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