Foldable front elliptical machine and folding structure of front elliptical machine

Abstract

The foldable front elliptical machine comprises a base, a front driving mechanism and a fixing support are arranged on the front portion of the base, a guide rail is arranged on the rear portion of the base, a top support is hinged to the upper end of the fixing support, handrails are arranged on the two sides of the top support respectively, and pedal connecting rods are connected to the lower ends of the handrails. Sliding connecting rods are arranged on the two sides of the front driving mechanism respectively, one ends of the sliding connecting rods are connected with the front driving mechanism in a matched mode, the middles of the sliding connecting rods are hinged to the middles of pedal connecting rods, pedals are arranged on the pedal connecting rods, and the guide rails are detachably connected with the base; the lower end of the lower rocker is hinged to the front end of the pedal connecting rod, the pedal connecting rod is formed by hinging a first connecting rod and a second connecting rod, the sliding connecting rod is formed by detachably connecting a third connecting rod and a fourth connecting rod, and the whole body is more compact through component splitting and folding.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a foldable front elliptical machine and a folding structure of the front elliptical machine. Background Art

[0002] The elliptical machine, also known as the space walker, is a popular cardio-respiratory exercise machine for both users and professionals. It's an indoor exercise machine that uses two pedals, one left and one right, to support the user's feet, guiding them along a closed, elliptical path. Because front-wheel-drive elliptical machines are inherently larger pieces of fitness equipment, existing elliptical machines are typically designed to be foldable for easier storage and transport.

[0003] For example, Chinese utility model patent CN219836077U discloses a folding structure for a front-drive elliptical machine, which includes a base, a fixed rod group is obliquely arranged at the front end of the base, the upper end of the fixed rod group is hinged to the main rod body, rotating shafts are vertically arranged on both sides of the middle part of the main rod body, roller sleeves are sleeved on the rotating shafts, one side of the roller sleeves is connected to a rocker armrest, the lower end of the rocker armrest is hinged to one end of a pedal connecting rod, the other end of the pedal connecting rod is fixed to the pedal, a downward bending portion is provided in the middle part of the pedal connecting rod, the lower part of the bending portion is hinged to the middle part of the skateboard connecting rod, one end of the sliding connecting rod is connected to the front driving wheel at the front of the base, the other end of the sliding connecting rod is connected to the roller, a slide rail is provided at the rear end of the base, and the roller is rotatably arranged on the slide rail, and the elliptical machine is folded by folding between the main rod body and the fixed rod group.

[0004] The problem with existing elliptical machines is that only the front main rod body and the fixed rod group are foldable. The structure connecting the base and the slide rail, as well as the overall length of the rocker armrest, pedal connecting rod and sliding connecting rod, make the overall volume still large after folding, and cannot achieve a good folding effect. Utility Model Content

[0005] Based on the problem that only the front main rod body and the fixed rod group of the above-mentioned elliptical machine can be folded, and the overall volume is still large after folding, the utility model provides a foldable front elliptical machine and a folding structure of the front elliptical machine.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows: a foldable front elliptical machine includes a base, a front drive mechanism and a fixed bracket are provided at the front of the base, a guide rail is provided at the rear of the base, a top bracket is hinged at the upper end of the fixed bracket, and the top bracket and the fixed bracket are locked by a first fastener, armrests are provided on both sides of the top bracket, the lower ends of the armrests are connected to the pedal connecting rod, and sliding connecting rods are provided on both sides of the front drive mechanism, one end of the sliding connecting rod is matched with the front drive mechanism, and the other end is provided with a pulley that can slide on the guide rail, and the sliding connecting rod is provided on the front drive mechanism. The middle part of the rod is hinged to the middle part of the pedal connecting rod, and a footrest is provided on the pedal connecting rod. The guide rail is detachably connected to the base. The armrest includes a lower rocker and an upper armrest. The lower rocker is rotatably connected to the top bracket, and the upper armrest is detachably connected to the upper end of the lower rocker. The lower end of the lower rocker is hinged to the front end of the pedal connecting rod. The pedal connecting rod is connected by a first connecting rod and a second connecting rod. The first connecting rod is hinged to the second connecting rod and is locked by a second fastener. The sliding connecting rod is connected by a third connecting rod and a fourth connecting rod, and the third connecting rod and the fourth connecting rod are detachable.

[0007] In the folded state, the top bracket is folded backward relative to the fixed bracket to above the base, and a folding space is formed between the top bracket, the fixed bracket and the base. The front drive mechanism, the folded first and second connecting rods, and the split third and fourth connecting rods are all accommodated in the folding space.

[0008] A further preferred technical solution of the present invention is: the front drive mechanism includes a rotatable front drive wheel arranged at the front of the base, cranks are respectively connected on both sides of the front drive wheel, the front end of the third connecting rod is rotatably connected to one end of the crank, the rear end of the third connecting rod is connected to the front end of the fourth connecting rod, the pedal connecting rod is located above the corresponding sliding connecting rod, the front end of the first connecting rod is hinged to the lower end of the lower rocker, the rear end of the first connecting rod is connected to the front end of the second connecting rod, and the fourth connecting rod is hinged to the second connecting rod above. In the folded state, the third connecting rod is separated from the fourth connecting rod and is located on both sides of the first connecting rod and the second connecting rod after folding.

[0009] A further preferred technical solution of the present invention is: a first connecting buckle is fixed on one end of the third connecting rod, the first connecting buckle is buckled on one end of the fourth connecting rod, and the first connecting buckle and the fourth connecting rod are detachably fixed together by a third fastener.

[0010] A further preferred technical solution of the present invention is: a hinged joint is fixed at one end of the first connecting rod, the hinged joint includes two connecting plates, and an insertion space is provided between the two connecting plates. One end of the second connecting rod is inserted into the insertion space and hinged to the connecting plate.

[0011] A further preferred technical solution of the present invention is: a second connecting buckle is fixed to the front of the guide rail, the second connecting buckle is buckled to the rear end of the base, and the two are detachably fixed together by a fourth fastener.

[0012] A further preferred technical solution of the present invention is: a protrusion is provided on the upper edge of the connecting plate, and a hinge hole is provided on the protrusion. A shaft sleeve corresponding to the protrusion is fixed on the upper surface of one end of the second connecting rod, and the shaft sleeve has an axial hole. When one end of the second connecting rod is inserted into the insertion space, the shaft sleeve is located between the two protrusions, and the axial hole is opposite to the hinge holes on both sides. The hinge shaft passes through the axial hole and the hinge hole to hinge the first connecting rod and the second connecting rod together.

[0013] A further preferred technical solution of the present utility model is: a lower fixing plate is fixed to the upper end of the fixing bracket, an upper fixing plate is fixed to the lower end of the top bracket, the rear side of the lower fixing plate is hinged to the rear side of the upper fixing plate, the first fastener includes a first bolt and a first nut matching therewith, a first connecting hole is provided on the upper fixing plate, and a second connecting hole is correspondingly provided on the lower fixing plate. When the top bracket and the fixing bracket are unfolded and the upper fixing plate and the lower fixing plate are aligned, the first connecting hole and the corresponding second connecting hole are docked, and the first bolt passes through the first connecting hole and the second connecting hole and is connected to the first nut.

[0014] A further preferred technical solution of the present invention is: the second fastener includes a second bolt and a second nut matching it, a third connecting hole is provided on the connecting plate, and a fourth connecting hole is provided on the end of the second connecting rod. When the first connecting rod and the second connecting rod are unfolded, the third connecting hole and the fourth connecting hole are docked, and the second bolt passes through the third connecting hole and the fourth connecting hole and is connected to the second nut.

[0015] A further preferred technical solution of the present utility model is: the third fastener includes a third bolt and a third nut matching it, the first connecting buckle is provided with a fifth connecting hole passing through it, and the end of the fourth connecting rod is provided with a sixth connecting hole passing through it. When the first connecting buckle is buckled on the end of the fourth connecting rod, the fifth connecting hole and the sixth connecting hole are docked, and the third bolt passes through the fifth connecting hole and the sixth connecting hole and is connected to the third nut.

[0016] Another topic: The folding structure of the front elliptical machine includes a base, a front drive mechanism and a fixed bracket are provided at the front of the base, the upper end of the fixed bracket is hinged to the top bracket, and the top bracket and the fixed bracket are locked by a first fastener, armrests are provided on both sides of the top bracket, the lower ends of the armrests are connected to the pedal connecting rod, sliding connecting rods are provided on both sides of the front drive mechanism, one end of the sliding connecting rod is connected to the front drive mechanism, the middle part of the sliding connecting rod is hinged to the middle part of the pedal connecting rod, the pedal connecting rod is connected by a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are hinged and locked by a second fastener, the sliding connecting rod is connected by a third connecting rod and a fourth connecting rod, and the third connecting rod and the fourth connecting rod are detachable.

[0017] In the folded state, the top bracket is folded backward relative to the fixed bracket to above the base, and a folding space is formed between the top bracket, the fixed bracket and the base. The front drive mechanism, the folded first and second connecting rods, and the split third and fourth connecting rods are all accommodated in the folding space.

[0018] Compared with the prior art, the advantage of the present invention is that the upper armrest and the guide rail are arranged to be detachable, the pedal link is formed by connecting the first link and the second link, and the two can be folded with each other, and the sliding link is formed by connecting the third link and the fourth link, and the two can be disassembled. When folding the elliptical machine, the upper armrest and the guide rail are disassembled and placed separately from the overall part, and then the top bracket is folded backward relative to the fixed bracket to above the base, and a folding space is formed between the top bracket, the fixed bracket and the base, the third link and the fourth link are separated, and the first link and the second link are folded, so that the front drive mechanism, the first link, the second link, the third link and the fourth link are all accommodated in the folding space. By disassembling and folding the components, the overall structure is more compact and smaller in size, which is convenient for storage, placement and packaging and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0020] Figure 1 Schematic diagram of the overall structure of the elliptical machine;

[0021] Figure 2 Schematic diagram of the split structure of the guide rail and the base;

[0022] Figure 3 Schematic diagram of the structure of the guide rail;

[0023] Figure 4 Schematic diagram of the structure of the sliding link;

[0024] Figure 5 Schematic diagram of the disassembly of the sliding link;

[0025] Figure 6 Schematic diagram of the structure of the pedal connecting rod;

[0026] Figure 7 This is a schematic diagram of the disassembly of the pedal connecting rod;

[0027] Figure 8 Schematic diagram of the folding of the pedal connecting rod;

[0028] Figure 9 for Figure 7 A local enlarged view of point A;

[0029] Figure 10 This is a diagram of the elliptical machine in the folded state.

[0030] In the figure: 1. Base; 2. Guide rail; 3. Pulley; 4. Fourth connecting rod; 5. Third connecting rod; 6. Crank; 7. Fixed bracket; 8. Front drive wheel; 9. Lower fixing plate; 10. Upper fixing plate; 11. First connecting hole; 12. Top bracket; 13. Armrest; 14. Upper armrest; 15. Lower rocker; 16. Pedal connecting rod; 17. Sliding connecting rod; 18. First connecting rod; 19. Second connecting rod; 20. Cross bar; 21. Main rod body; 22. Fourth bolt; 23. Eighth connecting hole; 24. Seventh connecting hole ; 25. Second connecting buckle; 26. Slide rod; 27. Front connecting rod; 28. Rear connecting rod; 29. First connecting buckle; 30. Fifth connecting hole; 31. Third bolt; 32. Sixth connecting hole; 33. Hinge head; 34. Fourth connecting hole; 35. Third connecting hole; 36. Hinge shaft; 37. Connecting plate; 38. Insertion space; 39. Hinge hole; 40. Shaft hole; 41. Bushing; 42. Second bolt; 43. Protrusion; 44. Second connecting hole; 45. Folding space; 46. Support tail rod. DETAILED DESCRIPTION

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

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

[0033] Figures 1-10As shown, the front elliptical machine includes a base 1, a front drive mechanism and a fixed bracket 7 are provided at the front of the base 1, a guide rail 2 is provided at the rear of the base 1, a top bracket 12 is hinged at the upper end of the fixed bracket 7, and the top bracket 12 and the fixed bracket 7 are locked by a first fastener, and armrests 13 are provided on both sides of the top bracket 12, and the lower end of the armrest 13 is connected to a pedal link 16, and sliding links 17 are provided on both sides of the front drive mechanism, one end of the sliding link 17 is connected to the front drive mechanism, and the other end is provided with a pulley 3 that can slide on the guide rail 2, the middle part of the sliding link 17 is hinged to the middle part of the pedal link 16, and the pedal link 16 is provided with a footrest.

[0034] The base 1 includes a longitudinally arranged main rod body 21 and a cross rod 20 fixed to the front end of the main rod body 21 .

[0035] The fixed bracket 7 is fixed to the front end of the main rod body 21, the upper end of the fixed bracket 7 is fixed with a lower fixed plate 9, the lower end of the top bracket 12 is fixed with an upper fixed plate 10, the rear side of the lower fixed plate 9 is hinged to the rear side of the upper fixed plate 10, and the upper fixed plate 10 and the lower fixed plate 9 are locked by a first fastener after being aligned to lock the top bracket 12 from rotating relative to the fixed bracket 7. After unlocking, the top bracket 12 can be flipped backward and folded relative to the fixed bracket 7.

[0036] There are many solutions for locking the upper fixing plate 10 and the lower fixing plate 9 by the first fastener. Conventional fixed connection methods using fasteners in the art are applicable to this patent, for example:

[0037] In one solution, the first fastener includes a first bolt, a first connecting hole 11 is provided on the upper fixing plate 10, and a second connecting hole 44 is correspondingly provided on the lower fixing plate 9. One of the first connecting hole 11 and the second connecting hole 44 is a threaded hole. The first bolt passes through the first connecting hole 11 and the second connecting hole 44 and is threadedly connected to one of them to fix the upper fixing plate 10 and the lower fixing plate 9 together, locking the relative rotation of the upper fixing plate 10 and the lower fixing plate 9.

[0038] Another solution is to provide an upper protrusion 43 on the front side of the upper fixing plate 10, and a locking slot is provided on the upper protrusion 43; a lower protrusion 43 is provided on the front side of the lower fixing plate 9, and a threaded hole is provided on the lower protrusion 43; the upper protrusion 43 and the lower protrusion 43 are staggered, and the notch of the locking slot is opposite to the threaded hole; the first fastener includes a first bolt, the first bolt passes through the threaded hole and the end of the first bolt is inserted into the locking slot, locking the relative rotation of the upper fixing plate 10 and the lower fixing plate 9, and the first bolt is threadedly connected to the threaded hole.

[0039] Figure 1 、 Figure 10As shown, another solution is shown. Preferably, the first fastener includes a first bolt and a first nut that cooperates therewith. A first connecting hole 11 is provided on the upper fixing plate 10, and a corresponding second connecting hole 44 is provided on the lower fixing plate 9. When the top bracket 12 and the fixing bracket 7 are unfolded and the upper fixing plate 10 and the lower fixing plate 9 are aligned, the first connecting hole 11 and the corresponding second connecting hole 44 are aligned, and the first bolt passes through the first connecting hole 11 and the second connecting hole 44 to connect with the first nut. Preferably, the upper fixing plate 10 is provided with four first connecting holes 11, and the four first connecting holes 11 are set at the four corners of the upper fixing plate 10. The lower fixing plate 9 is provided with the same number of second connecting holes 44.

[0040] The guide rail 2 is detachably connected to the rear of the base 1, and a second connecting buckle 25 is fixed to the front of the guide rail 2. The second connecting buckle 25 is buckled to the rear end of the base 1. Specifically, the second connecting buckle 25 is buckled to the rear end of the main rod body 21 and is detachably fixed together by a fourth fastener.

[0041] The guide rail 2 includes two sliding rods 26, a front connecting rod 27 connected to the front sides of the two sliding rods 26, and a rear connecting rod 28 connected to the rear sides of the two sliding rods 26. The pulleys 3 on the rear ends of the two sliding links 17 are respectively placed on the two sliding rods 26 and slide back and forth with the movement of the sliding links 17. The second connecting buckle 25 is fixedly connected to the front connecting rod 27. Preferably, the second connecting buckle 25 is U-shaped and is welded to the front connecting rod 27.

[0042] There are many solutions for fixing the guide rail 2 and the main rod body 21 by using the fourth fastener. Conventional connection methods using fasteners in the art are applicable to this patent, for example:

[0043] One solution: The fourth fastener includes a fourth bolt 22, a threaded hole is provided on the side of one side of the second connecting buckle 25, and a locking slot corresponding to the threaded hole is provided on the side wall of the rear end of the main rod body 21. When the second connecting buckle 25 is buckled on the rear end of the main rod body 21, the threaded hole and the notch of the locking slot are opposite, the fourth bolt 22 passes through the threaded hole and the end is inserted into the locking slot. The fourth bolt 22 is threadedly connected to the threaded hole to fix the guide rail 2 and the main rod body 21 together.

[0044] Another solution: the fourth fastener includes a fourth bolt 22, a seventh connecting hole 24 is provided on the second connecting buckle 25, and an eighth connecting hole 23 is provided on the rear end of the base 1. The eighth connecting hole 23 is a threaded hole. When the second connecting buckle 25 is buckled on the rear end of the main rod body 21, the eighth connecting hole 23 and the seventh connecting hole 24 are docked, the fourth bolt 22 passes through the seventh connecting hole 24 and the eighth connecting hole 23, and the fourth bolt 22 is threadedly connected to the eighth connecting hole 23, fixing the guide rail 2 and the main rod body 21 together.

[0045] Figure 2 、 Figure 3 As shown, another solution: preferably, the fourth fastener includes a fourth bolt 22 and a fourth nut mating therewith, the second connecting buckle 25 is provided with a seventh connecting hole 24 extending therethrough, and the rear end of the base 1 is provided with an eighth connecting hole 23 extending therethrough. When the second connecting buckle 25 is fastened to the rear end of the base 1, the seventh connecting hole 24 and the eighth connecting hole 23 are aligned with each other, and the fourth bolt 22 passes through the seventh connecting hole 24 and the eighth connecting hole 23 and is connected to the fourth nut, thereby fixedly connecting the guide rail 2 to the main rod body 21. Preferably, the base 1 is provided with an eighth connecting hole 23 extending horizontally and an eighth connecting hole 23 extending vertically, and the top and side portions of the second connecting buckle 25 are provided with seventh connecting holes 24, respectively. After the fourth bolt 22 passes through the eighth connecting hole 23 extending vertically from below, it can be welded and fixed to the base 1, facilitating subsequent installation by the user. When the second connecting buckle 25 is fastened to the rear end of the base 1, the portion of the fourth bolt 22 extending from the eighth connecting hole 23 extending vertically is inserted into the seventh connecting hole 24 on the top of the second connecting buckle 25, thereby also providing a positioning effect.

[0046] In addition, a supporting tail rod 46 is fixedly connected to the rear connecting rod 28, and the supporting tail rod 46 is laterally supported at the rear end of the guide rail 2. The supporting tail rod 46 is detachably fixed to the rear connecting rod 28 by bolts and nuts.

[0047] Figure 1 As shown, the armrest 13 includes a lower rocker 15 and an upper armrest 14. The lower rocker 15 is rotatably connected to the top bracket 12, and the upper armrest 14 is detachably connected to the upper end of the lower rocker 15. The upper armrest 14 is used for the user to grasp with both hands.

[0048] There are many ways to detachably connect the upper armrest 14 and the lower rocker 15. Conventional ways of connecting rods to rods are applicable to this patent, for example;

[0049] In one embodiment, the lower rocker 15 is a tubular structure with a locking hole connected to the interior. The lower end of the upper armrest 14 has an insertion portion for inserting into the upper end of the lower rocker 15. The insertion portion is hollow and has an opening on its end surface. A V-shaped spring clip is installed in the insertion portion, and the clip portion of the V-shaped spring clip extends from the outer wall of the insertion portion. When the insertion portion is inserted into the upper end of the lower rocker 15, the clip portion of the V-shaped spring clip engages with the locking hole, connecting the upper armrest 14 to the lower rocker 15. The V-shaped spring clip is a positioning spring clip used to connect tubes, and an example is the V-shaped spring clip clip branded as OYES / Aoyuexin Technology.

[0050] In another solution, a threaded hole is provided on the upper end surface of the lower rocker 15, and a threaded connection portion is provided at the lower end of the upper armrest 14. The upper armrest 14 is threadedly connected to the threaded hole at the upper end of the lower rocker 15 through the threaded connection portion.

[0051] In another solution, a slot is provided on the upper end surface of the lower rocker 15, and an insertion portion is provided on the lower end of the upper armrest 14. The insertion portion is inserted into the slot and fixed by bolts.

[0052] The lower end of the lower rocker 15 is hinged to the front end of the pedal link 16. The pedal link 16 is connected by a first link 18 and a second link 19. The first link 18 and the second link 19 are hinged and locked by a second fastener, so that the pedal link 16 can be folded after being unlocked.

[0053] A hinge joint 33 is fixed to one end of the first connecting rod 18. The hinge joint 33 includes two connecting plates 37 with an insertion space 38 between the two connecting plates 37. One end of the second connecting rod 19 is inserted into the insertion space 38 and hingedly connected to the connecting plate 37. Specifically, a protrusion 43 is provided on the upper edge of the connecting plate 37, and a hinge hole 39 is provided in the protrusion 43. A sleeve 41 is fixed to the upper surface of one end of the second connecting rod 19, corresponding to the protrusion 43. The sleeve 41 has an axial hole 40. When one end of the second connecting rod 19 is inserted into the insertion space 38, the sleeve 41 is located between the two protrusions 43, and the axial hole 40 is opposite the hinge holes 39 on either side. The hinge shaft 36 passes through the axial holes 40 and the hinge holes 39, hingedly connecting the first connecting rod 18 and the second connecting rod 19 together, so that the first connecting rod 18 and the second connecting rod 19 can be folded relative to each other after being unlocked. Preferably, the hinge joint 33 is welded to the end of the first connecting rod 18.

[0054] There are many solutions for locking the first connecting rod 18 and the second connecting rod 19 by the second fastener. Conventional connection methods by fasteners in the art are applicable to this patent, for example:

[0055] In one solution, the second fastener includes a second bolt 42, a threaded hole is provided on the connecting plate 37 on one side, and a locking slot corresponding to the threaded hole is provided on the side wall of the end of the second connecting rod 19. When the first connecting rod 18 and the second connecting rod 19 are in the expanded state, the notch of the locking slot is opposite to the threaded hole, the second bolt 42 passes through the threaded hole and the end is inserted into the locking slot, and the second bolt 42 is threadedly connected to the threaded hole to lock the relative rotation of the first connecting rod 18 and the second connecting rod 19.

[0056] In another embodiment, the second fastener includes a second bolt 42, and a third connecting hole 35 is provided on the connecting plates 37 on both sides. A fourth connecting hole 34 is provided on the end of the second connecting rod 19. The fourth connecting hole 34 is a threaded hole. When the first connecting rod 18 and the second connecting rod 19 are in the expanded state, the fourth connecting hole 34 is docked with the third connecting holes 35 on both sides, and the second bolt 42 passes through the third connecting hole 35 and the fourth connecting hole 34, and the second bolt 42 is threadedly connected to the fourth connecting hole 34 to lock the relative rotation of the first connecting rod 18 and the second connecting rod 19.

[0057] Figure 6-Figure 9 As shown, another solution is preferably that the second fastener includes a second bolt 42 and a second nut matching therewith, a third connecting hole 35 is provided on the connecting plate 37, and a fourth connecting hole 34 is provided on the end of the second connecting rod 19. When the first connecting rod 18 and the second connecting rod 19 are unfolded, the third connecting hole 35 and the fourth connecting hole 34 are docked, and the second bolt 42 passes through the third connecting hole 35 and the fourth connecting hole 34 and is connected to the second nut to lock the relative rotation of the first connecting rod 18 and the second connecting rod 19.

[0058] The sliding link 17 is formed by connecting the third link 5 and the fourth link 4. The third link 5 and the fourth link 4 are detachable, allowing the sliding link 17 to be split into two rods. A first connecting buckle 29 is fixed to one end of the third link 5. The first connecting buckle 29 is buckled onto one end of the fourth link 4 and is detachably connected to the fourth link 4 via a third fastener. Preferably, the first connecting buckle 29 is U-shaped and is welded to the third link 5.

[0059] There are many solutions for fixing the third connecting rod 5 and the fourth connecting rod 4 by using the third fastener. Conventional connection methods using fasteners in the art are applicable to this patent, for example:

[0060] One solution is that the third fastener includes a third bolt 31, a threaded hole is provided on the side of one side of the first connecting buckle 29, and a locking slot corresponding to the threaded hole is provided on the end side wall of the fourth connecting rod 4. When the first connecting buckle 29 is buckled on the end of the fourth connecting rod 4, the threaded hole is opposite to the notch of the locking slot, the third bolt 31 passes through the threaded hole and the end is inserted into the locking slot, the third bolt 31 is threadedly connected to the threaded hole, and the third connecting rod 5 and the fourth connecting rod 4 are fixed together.

[0061] In another embodiment, the third fastener includes a third bolt 31, a fifth connecting hole 30 is provided on the first connecting buckle 29, and a sixth connecting hole 32 is provided on the end of the fourth connecting rod 4. The sixth connecting hole 32 is a threaded hole. When the first connecting buckle 29 is buckled on the end of the fourth connecting rod 4, the fifth connecting hole 30 and the sixth connecting hole 32 are docked, the third bolt 31 passes through the fifth connecting hole 30 and the sixth connecting hole 32, and the third bolt 31 is threadedly connected to the sixth connecting hole 32 to fix the third connecting rod 5 and the fourth connecting rod 4 together.

[0062] Figure 4 、 Figure 5 As shown, another solution is shown. Preferably, the third fastener includes a third bolt 31 and a third nut matching it. The first connecting buckle 29 is provided with a fifth connecting hole 30 extending therethrough, and the end of the fourth connecting rod 4 is provided with a sixth connecting hole 32 extending therethrough. When the first connecting buckle 29 is buckled on the end of the fourth connecting rod 4, the fifth connecting hole 30 and the sixth connecting hole 32 are docked, and the third bolt 31 passes through the fifth connecting hole 30 and the sixth connecting hole 32 and is connected to the third nut. Preferably, the fourth connecting rod 4 is provided with a sixth connecting hole 32 that passes through horizontally and a sixth connecting hole 32 that passes through vertically, and the top and side of the first connecting buckle 29 are correspondingly provided with a fifth connecting hole 30, wherein the third bolt 31 passes through the sixth connecting hole 32 that passes through vertically from below and can be welded and fixed to the sixth connecting hole 32, which is convenient for the user to install later. When the first connecting buckle 29 is buckled on the end of the fourth connecting rod 4, the part of the third bolt 31 that passes through the sixth connecting hole 32 that passes through vertically and protrudes from the top of the fourth connecting rod 4 is inserted into the fifth connecting hole 30 on the top of the first connecting buckle 29, which can also play a positioning effect.

[0063] The front drive mechanism is located behind the fixed bracket 7.

[0064] When folding the elliptical machine, the upper armrest 14 is removed from the lower rocker 15, and the guide rail 2 is removed from the rear of the base 1, so that the upper armrest 14 and the guide rail 2 are separated from the whole and placed separately, and then the top bracket 12 is folded backward relative to the fixed bracket 7 to the top of the base 1, and a folding space 45 is formed between the top bracket 12, the fixed bracket 7 and the base 1, and the connected ends of the third link 5 and the fourth link 4 are separated, and the first link 18 and the second link 19 are folded, so that the front drive mechanism, the first link 18, the second link 19, the third link 5 and the fourth link 4 are all accommodated in the folding space 45, and the folding is completed. By disassembling and folding the components, the overall structure is more compact and smaller in size, which is convenient for storage, placement and packaging and transportation.

[0065] Figure 10As shown, preferably, the front-drive mechanism includes a rotatable front drive wheel 8 arranged at the front of the base 1, and cranks 6 are respectively connected on both sides of the front drive wheel 8. The front end of the third link 5 is rotatably connected to one end of the crank 6, and the rear end of the third link 5 is fixed by a first connecting buckle 29. The rear end of the third link 5 is connected to the front end of the fourth link 4 through the first connecting buckle 29. The pulley 3 is arranged at the rear end of the fourth link 4, and the pedal link 16 is located above the corresponding sliding link 17. The front end of the first link 18 is hinged to the lower end of the lower rocker 15, and the rear end of the first link 18 is fixed with a hinge joint 33. The rear end of the first link 18 is connected to the front end of the second link 19 through the hinge joint 33, and a hinge is formed between the fourth link 4 and the second link 19 above.

[0066] The front drive mechanism is a conventional technical means in this field, and reference may be made to the drive wheels in patents CN210228993U and CN219836077U.

[0067] When folding, the rear end of the third link 5 is separated and disconnected from the front end of the fourth link 4, and the first link 18 and the second link 19 are folded up around the hinge point, so that the fourth link 4 hinged to the second link 19 moves to the rear side of the second link 19 as the second link 19 is folded up, and the third link 5 connected to the crank 6 is located on the left side of the first link 18, so that the separated third link 5 and fourth link 4 are located on the front and rear sides of the folded first link 18 and second link.

[0068] The above describes the foldable front-mounted elliptical machine and its folding structure provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art may, without departing from the principles of the present invention, make various improvements and modifications to the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A foldable front-mounted elliptical machine comprises a base, a front drive mechanism and a fixed bracket are provided at the front of the base, a guide rail is provided at the rear of the base, a top bracket is hinged at the upper end of the fixed bracket, and the top bracket and the fixed bracket are locked by a first fastener, armrests are provided on both sides of the top bracket, the lower ends of the armrests are connected to a pedal connecting rod, sliding connecting rods are provided on both sides of the front drive mechanism, one end of the sliding connecting rod is connected to the front drive mechanism, and the other end is provided with a pulley that can slide on the guide rail, the middle part of the sliding connecting rod is hinged to the middle part of the pedal connecting rod, and a footrest is provided on the pedal connecting rod, characterized in that: The guide rail is detachably connected to the base, the armrest includes a lower rocker and an upper armrest, the lower rocker is rotatably connected to the top bracket, the upper armrest is detachably connected to the upper end of the lower rocker, the lower end of the lower rocker is hinged to the front end of the pedal link, the pedal link is formed by connecting a first link and a second link, the first link and the second link are hinged and locked by a second fastener, the sliding link is formed by connecting a third link and a fourth link, and the third link and the fourth link are detachable. In the folded state, the top bracket is folded backward relative to the fixed bracket to above the base, and a folding space is formed between the top bracket, the fixed bracket and the base. The front drive mechanism, the folded first and second connecting rods, and the split third and fourth connecting rods are all accommodated in the folding space.

2. The foldable front elliptical machine according to claim 1, characterized in that: The front-drive mechanism includes a rotatable front drive wheel arranged at the front of the base, and cranks are respectively connected to both sides of the front drive wheel. The front end of the third connecting rod is rotatably connected to one end of the crank, and the rear end of the third connecting rod is connected to the front end of the fourth connecting rod. The pedal connecting rod is located above the corresponding sliding connecting rod, the front end of the first connecting rod is hinged to the lower end of the lower rocker, the rear end of the first connecting rod is connected to the front end of the second connecting rod, and the fourth connecting rod is hinged to the second connecting rod above. In the folded state, the third connecting rod is separated from the fourth connecting rod and is located on both sides of the folded first and second connecting rods.

3. The foldable front-mounted elliptical machine according to claim 1 or 2, characterized in that: A first connecting buckle is fixed on one end of the third connecting rod, the first connecting buckle is buckled on one end of the fourth connecting rod, and the first connecting buckle and the fourth connecting rod are detachably fixed together by a third fastener.

4. The foldable front-mounted elliptical machine according to claim 1 or 2, characterized in that: One end of the first connecting rod is fixed with a hinge joint, which includes two connecting plates with an insertion space between the two connecting plates. One end of the second connecting rod is inserted into the insertion space and hinged to the connecting plate.

5. The foldable front-mounted elliptical machine according to claim 1, wherein: The front portion of the guide rail is fixed with a second connecting buckle, the second connecting buckle is buckled onto the rear end of the base, and the two are detachably fixed together via a fourth fastener.

6. The foldable front-mounted elliptical machine according to claim 4, wherein: A protrusion is provided on the upper edge of the connecting plate, and a hinge hole is provided on the protrusion. A shaft sleeve corresponding to the protrusion is fixed on the upper surface of one end of the second connecting rod, and the shaft sleeve has an axial hole. When one end of the second connecting rod is inserted into the insertion space, the shaft sleeve is located between the two protrusions, and the axial hole is opposite to the hinge holes on both sides. The hinge shaft passes through the axial hole and the hinge hole to hinge the first connecting rod and the second connecting rod together.

7. The foldable front-mounted elliptical machine according to claim 1, wherein: The upper end of the fixing bracket is fixed with a lower fixing plate, and the lower end of the top bracket is fixed with an upper fixing plate. The rear side of the lower fixing plate is hinged to the rear side of the upper fixing plate. The first fastener includes a first bolt and a first nut matching therewith. A first connecting hole is provided on the upper fixing plate, and a second connecting hole is correspondingly provided on the lower fixing plate. When the top bracket and the fixing bracket are unfolded and the upper fixing plate is aligned with the lower fixing plate, the first connecting hole is docked with the corresponding second connecting hole, and the first bolt passes through the first connecting hole and the second connecting hole and is connected to the first nut.

8. The foldable front-mounted elliptical machine according to claim 4, wherein: The second fastener includes a second bolt and a second nut matching it. A third connecting hole is provided on the connecting plate, and a fourth connecting hole is provided on the end of the second connecting rod. When the first connecting rod and the second connecting rod are unfolded, the third connecting hole and the fourth connecting hole are docked, and the second bolt passes through the third connecting hole and the fourth connecting hole and is connected to the second nut.

9. The foldable front-mounted elliptical machine according to claim 3, wherein: The third fastener includes a third bolt and a third nut matching it. A fifth connecting hole is provided on the first connecting buckle, and a sixth connecting hole is provided on the end of the fourth connecting rod. When the first connecting buckle is buckled on the end of the fourth connecting rod, the fifth connecting hole and the sixth connecting hole are docked, and the third bolt passes through the fifth connecting hole and the sixth connecting hole and is connected to the third nut.

10. The folding structure of the front elliptical machine includes a base, a front drive mechanism and a fixed bracket are provided at the front of the base, the upper end of the fixed bracket is hinged to the top bracket, and the top bracket and the fixed bracket are locked by a first fastener, armrests are provided on both sides of the top bracket, the lower ends of the armrests are connected to the pedal connecting rod, and sliding connecting rods are provided on both sides of the front drive mechanism, one end of the sliding connecting rod is connected to the front drive mechanism, and the middle part of the sliding connecting rod is hinged to the middle part of the pedal connecting rod, characterized in that: The pedal link is formed by connecting a first link and a second link, the first link and the second link are hinged and locked by a second fastener, and the sliding link is formed by connecting a third link and a fourth link, and the third link and the fourth link are detachable. In the folded state, the top bracket is folded backward relative to the fixed bracket to above the base, and a folding space is formed between the top bracket, the fixed bracket and the base. The front drive mechanism, the folded first and second connecting rods, and the split third and fourth connecting rods are all accommodated in the folding space.

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