CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority to Chinese Patent Application 202311356079.7, filed on Oct. 19, 2023, which is incorporated herein by reference.
TECHNICAL FIELD
The present disclosure relates to the field of sports fitness equipment, in particular to an elliptical machine.
BACKGROUND
The elliptical machine is a new kind of sports fitness equipment in recent years. A user steps on foot pedals to drive a connecting rod mechanism to cause left and right pedals mounted on the connecting rod mechanism to make elliptical motion, so as to simulate walking, running, step climbing, and other leg motion.
In the existing elliptical machine, such as an elliptical machine disclosed in the patent No. CN206924321U, a shaft sleeve and a shaft core arranged at two ends of a suspension rod respectively are fixedly connected to a suspension rod body. The suspension rod 1 as shown in FIG. 1 is of an L-shaped structure, and the shaft sleeve 2 and the shaft core 3 are arranged at two ends thereof respectively. As shown in FIG. 2, the shaft sleeve 2 at one end of the suspension rod is pivotally matched with a frame body shaft 5 of a frame body 4, the shaft core 3 at the other end of the suspension rod is pivotally matched with a guide shaft sleeve 7 of a guide arm 6, and the guide arm 6 is generally mounted in place prior to the suspension rod 1. The shaft sleeve 2 and the shaft core 3 are in fixed connection with the suspension rod 1, for example, the shaft sleeve and the shaft core are in welded connection with the suspension rod, such that when the suspension rod is mounted, there is no enough space on two sides of the suspension rod 1 to ensure that the shaft sleeve 2 and the shaft core 3 at two ends of the suspension rod 1 can be conveniently mounted in the correspondingly matched frame body shaft 5 and guide shaft sleeve 7, and even if the shaft core and the shaft sleeve at one end are mounted in a matched way first, the shaft core and the shaft sleeve at the other end are difficult to assemble, resulting in difficult assembly and consumption of a large amount of mounting time; and the disassembly is very inconvenient when required for repair. In addition, when the shaft sleeve and the shaft core are in fixed connection with the suspension rod body, it is easily caused that when there are manufacturing errors in the suspension rod and other parts of the elliptical machine, the shaft sleeve and the shaft core at two ends of the suspension rod cannot be accurately assembled in the corresponding shaft core and shaft sleeve, resulting in unnecessary waste in material and processing costs.
SUMMARY
In view of this, for at least one of the above problems, the present disclosure provides an elliptical machine.
The present disclosure is implemented by adopting the following solution:
The present disclosure proposes an elliptical machine, including:
- a frame body;
- a left crank arm and a right crank arm pivotally arranged at a front end of the frame body;
- a left cantilever and a right cantilever hung at a rear end of the frame body;
- a left guide arm and a right guide arm pivotally connected to the left crank arm and the right crank arm as well as the left cantilever and the right cantilever respectively;
- a left pedal assembly and a right pedal assembly pivotally arranged on the left guide arm and the right guide arm respectively;
- a left swing arm and a right swing arm pivotally arranged at the front end of the frame body; and
- a left link arm and a right link arm coupled to the left swing arm and the right swing arm as well as the left pedal assembly and the right pedal assembly respectively;
- where a first matching structure is arranged at a first end of the cantilever, a second matching structure is arranged on the guide arm, and the first matching structure and the second matching structure are a set of a shaft and a bearing assembly capable of being pivotally matched with each other, such that the cantilever is pivotally connected to the guide arm; a third matching structure is arranged at a second end of the cantilever, a fourth matching structure is arranged on the frame body, and the third matching structure and the fourth matching structure are a set of a shaft and a bearing assembly capable of being pivotally matched with each other, such that the cantilever is pivotally connected to the frame body; and the first matching structure and/or the third matching structure are/is detachably connected to the cantilever.
In one embodiment, the first matching structure is a cantilever shaft detachably arranged at one end of the cantilever, the second matching structure is a guide bearing assembly arranged on the guide arm, and the guide bearing assembly is pivotally matched with the cantilever shaft.
In one embodiment, the cantilever further includes a locking block locked at a first end of a cantilever body and configured to clamp a part of the first matching structure between the locking block and the cantilever body so as to detachably connect the first matching structure to the first end of the cantilever body.
In one embodiment, the first matching structure is the cantilever shaft detachably arranged at one end of the cantilever, the second matching structure is the guide bearing assembly arranged on the guide arm, the cantilever shaft includes a first shaft part and a second shaft part connected to each other, the first shaft part is configured to be pivotally matched with the guide bearing assembly, and the second shaft part is configured to be in locked connection with the cantilever body and the locking block and has a greater diameter than the first shaft part.
In one embodiment, the first matching structure is the cantilever shaft detachably arranged at one end of the cantilever, the second matching structure is the guide bearing assembly arranged on the guide arm, the cantilever shaft includes a first shaft part and a second shaft part connected to each other, the first shaft part is configured to be pivotally matched with the guide bearing assembly, the second shaft part is configured to be in locked connection with the cantilever body and the locking block and is provided with a first matching plane and a second matching plane opposite to each other, and the first matching plane and the second matching plane are matched with the locking block and the cantilever body in an abutting manner respectively.
In one embodiment, a first mounting surface is arranged on the locking block, a first groove is formed in the first mounting surface, and the first matching plane is matched with a first bottom surface of the first groove in an abutting manner; the cantilever body 310 is L-shaped as a whole, a notch is provided in the first end of the cantilever body so as to form a second mounting surface on the first end of the cantilever body, the locking block is mounted in the notch, and the first mounting surface is opposite to the second mounting surface; and a second groove is formed in the second mounting surface, and the second matching plane is matched with a second bottom surface of the second groove in an abutting manner.
In one embodiment, there are gaps between side surfaces of the first and second grooves and a periphery of the second shaft part of the cantilever shaft.
In one embodiment, limit structures/a limit structure are/is further arranged between the first matching plane and the first bottom surface and/or between the second matching plane and the second bottom surface.
In one embodiment, the limit structure is a boss and groove matching structure.
In one embodiment, a cylindrical boss is arranged on the second bottom surface, and a positioning hole matched with the boss is provided in the second matching plane.
With the technical solution provided by the present disclosure, the present disclosure has the following beneficial effects:
- 1. According to the present disclosure, the first matching structure is arranged at the first end of the cantilever of the elliptical machine, the third matching structure is arranged at the second end of the cantilever, and the first matching structure and/or the third matching structure are/is detachably connected to the cantilever, such that when the cantilever is mounted, there is enough space on two sides of the cantilever to ensure that the bearing assembly and a shaft core at two ends of the cantilever can be conveniently mounted in correspondingly matched shaft core and bearing assembly, thereby implementing convenient assembly and saving a large amount of mounting time; and the disassembly is very convenient when required for repair. In addition, when the bearing assembly and the shaft core are detachably connected to the cantilever body, mounting position and angle of the bearing assembly or the shaft core on the cantilever can be slightly adjusted, such that when there are manufacturing errors in the cantilever and other parts of the elliptical machine, the bearing assembly and the shaft core at two ends of the cantilever can be accurately assembled in the corresponding shaft core and bearing assembly, thereby avoiding unnecessary waste in material and processing costs.
- 2. According to the present disclosure, the limit structures/the limit structure are/is further arranged between the first matching plane and the first bottom surface and/or between the second matching plane and the second bottom surface, and the limit structure is the boss and groove matching structure, such that the cantilever shaft is limited to move in the axial direction of the cantilever shaft relative to the cantilever body; and the first matching plane is matched with the first bottom surface in an abutting manner, and the second matching plane is matched with the second bottom surface in an abutting manner, such that the cantilever shaft is stably fixed to the cantilever body.
- 3. According to the present disclosure, there are the gaps between the side surfaces of the first and second grooves and the periphery of the second shaft part of the cantilever shaft, the first matching plane is matched with the first bottom surface of the first groove in an abutting manner, and the second matching plane is matched with the second bottom surface of the second groove in an abutting manner, such that the cantilever shaft is locked and fixed to the cantilever body by the locking block, an angle of the cantilever shaft relative to the cantilever body can be adjusted, and when there are manufacturing errors in the cantilever and other parts of the elliptical machine, the cantilever shaft can be accurately assembled in the corresponding bearing assembly, thereby avoiding unnecessary waste in material and processing costs.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a three-dimensional view of a suspension rod of an elliptical machine in the prior art;
FIG. 2 is a three-dimensional assembly view of a suspension rod, a frame, and guide arms of an elliptical machine in the prior art;
FIG. 3 is a three-dimensional view of an elliptical machine;
FIG. 4 is a three-dimensional view of an elliptical machine from which part of a cover plate is removed;
FIG. 5 is a side view of an elliptical machine from which part of a cover plate is removed;
FIG. 6 is an exploded view of cantilevers and a connecting structure thereof;
FIG. 7 is a three-dimensional view of a cantilever;
FIG. 8 is an exploded view of a cantilever;
FIG. 9 is an enlarged view of A in FIG. 8;
FIG. 10 is a three-dimensional view of a locking block;
FIG. 11 is a three-dimensional view of a locking block;
FIG. 12 is a three-dimensional view of a cantilever shaft; and
FIG. 13 is a partial sectional view of a cantilever shaft.
DESCRIPTION OF EMBODIMENTS
To further describe embodiments, the present disclosure provides accompanying drawings. These drawings constitute a part of content of the present disclosure and are mainly used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the related description of the specification. With reference to the content, those of ordinary skill in the art can understand other possible embodiments and advantages of the present disclosure. Components in figures are not drawn to scale, and similar component signs are often used to refer to similar components.
The present disclosure is now further described in conjunction with the accompanying drawings and specific embodiments.
As shown in FIGS. 3 to 13, this embodiment provides an elliptical machine, specifically an elliptical machine with cantilevers hanging pedal assemblies at a tail part. In terms of mechanisms, the elliptical machine mainly includes a frame body 10, left and right crank arms 60 pivotally arranged at a front end of the frame body 10, left and right cantilevers 30 hung at a rear end of the frame body 10, left and right guide arms 50 pivotally connected to the left and right crank arms 60 as well as the left and right cantilevers 30 respectively, left and pedal assemblies 20 pivotally arranged on the left and right guide arms 50 respectively, left and right swing arms 40 pivotally arranged at the front end of the frame body 10, and left and right link arms 70 coupled to the left and right swing arms 40 as well as the left and right pedal assemblies 20 respectively. In the mechanisms of this embodiment, the crank arms 60 are pivotally arranged at the front end of the frame body 10, make circular motion, and drive front ends of the guide arms 50 to make circular motion; and the cantilevers 30 are hung at the rear end of the frame body 10, swing back and forth along a circular arc trajectory, and drive rear ends of the guide arms 50 to swing back and forth along a circular arc trajectory. In this way, the near rear ends (such as pivot shafts 52) of the guide arms 50 move along an approximately elliptical closed trajectory, so as to drive the pedal assemblies 20 pivotally connected to the pivot shafts 52 to move along an approximately elliptical closed trajectory. Moreover, an angle between the left and right crank arms 60 is 180°, such that when the rear end of the guide arm 50 on one side moves to a rear polar point of the circular arc trajectory, the rear end of the guide arm 50 on the other side moves to a front polar point of the circular arc trajectory, to simulate stepping motion. Certainly, like a generally common elliptical machine, the elliptical machine in this preferred embodiment also includes a resistance system (such as a flywheel and an eddy current brake), an interface system (such as an instrument panel), and an electronic/motor system. These parts may be those in the prior art and therefore will not be described herein. The frame body 10 is formed through fixed connection (such as welding or locking) of a plurality of metal members, can be stably placed on the ground, and serves as a mounting foundation for other members.
A first matching structure is arranged at a first end 301 of the cantilever 30, a second matching structure is arranged on the guide arm 50, and the first matching structure and the second matching structure are a set of a shaft and a bearing assembly capable of being pivotally matched with each other, such that the cantilever 30 is pivotally connected to the guide arm 50; and the bearing assembly may include a bearing and a shaft sleeve, or may be a shaft sleeve or a bearing matched with the shaft. A third matching structure is arranged at a second end 302 of the cantilever 30, a fourth matching structure is arranged on the frame body 10, and the third matching structure and the fourth matching structure are a set of a shaft and a bearing assembly capable of being pivotally matched with each other, such that the cantilever 30 is pivotally connected to the frame body 10; the first matching structure and/or the third matching structure are/is detachably connected to the cantilever, such that when the cantilever 30 is mounted, there is enough space on two sides of the cantilever 30 to ensure that the bearing assembly and a shaft core at two ends of the cantilever 30 can be conveniently mounted in correspondingly matched shaft core and bearing assembly, thereby implementing convenient assembly and saving a large amount of mounting time; and the disassembly is very convenient when required for repair. In addition, when the bearing assembly and the shaft core are detachably connected to the cantilever 30 body, mounting position and angle of the bearing assembly or the shaft core on the cantilever 30 can be slightly adjusted, such that when there are manufacturing errors in the cantilever and other parts of the elliptical machine, the bearing assembly and the shaft core at two ends of the cantilever can be accurately assembled in the corresponding shaft core and bearing assembly, thereby avoiding unnecessary waste in material and processing costs.
The first matching structure is detachably arranged at the first end 301 of the cantilever 30. The cantilever 30 includes a cantilever body 310 and a locking block 340 capable of being locked at the first end 301 of the cantilever body 310. When the locking block 340 is locked at one end of the cantilever body 310, a part of the first matching structure can be clamped between the locking block 340 and the cantilever body 310 so as to detachably connect the first matching structure to the first end 301 of the cantilever body 310. In other embodiments, the first matching structure may be detachably connected to the cantilever 30 through bolt fixing.
As shown in FIG. 6, in this embodiment, the first matching structure is a cantilever shaft 330 detachably arranged at one end of the cantilever 30, the guide arm 50 is provided with a guide bearing assembly 51, and the guide bearing assembly 51 is pivotally matched with the cantilever shaft 330, such that the cantilever 30 is pivotally connected to the guide arm 50.
While this embodiment is described by using an example where the cantilever shaft 330 is detachably arranged at one end of the cantilever 30 and the guide arm 50 is provided with the guide bearing assembly 51, as those skilled in the art can anticipate, the cantilever 30 is detachably provided with a bearing assembly, and the frame body 10 is provided with a matched shaft, such that the cantilever 30 is pivotally connected to the guide arm 50 through a matching structure of the shaft and the bearing assembly, which is also a feasible technical solution.
As shown in FIG. 6, in this embodiment, the third matching structure is a cantilever bearing assembly 320 arranged on the cantilever 30; and the fourth matching structure is a frame body shaft 11 arranged on the frame body 10, and the frame body shaft 11 is pivotally matched with the cantilever bearing assembly 320, such that the cantilever 30 is pivotally arranged on the frame body 10. Optionally, in other embodiments, the cantilever 30 is provided with a shaft, and the frame body 10 is provided with a bearing assembly matched with the shaft, such that the cantilever 30 is pivotally arranged on the frame body 10 through the matching structure of the shaft and the bearing assembly, which is also a feasible technical solution.
As shown in FIGS. 6 to 9, in this embodiment, the cantilever shaft 330 is detachably arranged at one end of the cantilever 30. The cantilever 30 includes a cantilever body 310 and a locking block 340 capable of being locked at the first end 301 of the cantilever body 310. When the locking block 340 is locked at one end of the cantilever body 310, a part of the cantilever shaft 330 can be clamped between the locking block 340 and the cantilever body 310 so as to stably connect the cantilever shaft 330 to one end of the cantilever body 310. The cantilever body 310 is L-shaped as a whole, making it more convenient to give way to the pedal assembly 20. The cantilever body 310 may be formed by bending a profile, such as a square tube, such that the cantilever body 310 has sufficient mechanical strength. Alternatively, the cantilever body 310 may be formed by splicing a plurality of profiles, such as by welding a plurality of square tubes. The cantilever shaft 330 includes a first shaft part 331 and a second shaft part 332 connected to each other, the first shaft part 331 is configured to be pivotally matched with the guide bearing assembly 51, and the second shaft part 332 is configured to be in locked connection with the cantilever body 310 and the locking block 340. The first shaft part 331 and the second shaft part 332 may have same or different diameters. In this embodiment, the second shaft part 332 has a greater diameter than the first shaft part 331, such that the cantilever shaft 330 and the cantilever body 310 have the better mechanical connection strength when connected.
As shown in FIGS. 6 to 9, when the locking block 340 is locked at one end of the cantilever body 310, the second shaft part 332 of the cantilever shaft 330 can be clamped between the locking block 340 and the cantilever body 310 so as to stably connect the cantilever shaft 330 to one end of the cantilever body 310. The second shaft part 332 is provided with a first matching plane 3321 and a second matching plane 3322 opposite to each other, and the first matching plane 3321 and the second matching plane 3322 are matched with the locking block 340 and the cantilever body 310 in an abutting manner respectively. Moreover, a first mounting surface 341 is arranged on the locking block 340, a first groove 343 is formed in the first mounting surface 341, and the first matching plane 3321 is matched with a first bottom surface 3431 of the first groove 343 in an abutting manner. A notch 311 is provided in the first end 301 of the cantilever body 310 so as to form a second mounting surface 313 on the first end 301 of the cantilever body 310, the locking block 340 is mounted in the notch 311 of the cantilever body 310 in a locking manner, and the first mounting surface 341 is opposite to the second mounting surface 313. A second groove 312 is formed in the second mounting surface 313, and the second matching plane 3322 is matched with a second bottom surface 3121 of the second groove 312 in an abutting manner. When the locking block 340 is locked at one end of the cantilever body 310, the first groove 343 and the second groove 312 enclose the second shaft part 332 of the cantilever shaft 330, the first matching plane 3321 is matched with the first bottom surface 3431 in an abutting manner, and the second matching plane 3322 is matched with the second bottom surface 3121 in an abutting manner, such that the second shaft part 332 of the cantilever shaft 330 is firmly clamped between the locking block 340 and the cantilever body 310, and the cantilever shaft 330 is stably connected to one end of the cantilever body 310.
As shown in FIGS. 6 to 13, a limit structure is further arranged between the second matching plane 3322 and the second bottom surface 3121, so as to limit the cantilever shaft 330 to move in an axial direction of the cantilever shaft 330 relative to the cantilever body 310. The limit structure between the second matching plane 3322 and the second bottom surface 3121 is a boss and groove matching structure. Specifically, a boss 315 is arranged on the second bottom surface 3121, and a groove matched with the boss 315 is provided in the second matching plane 3322. The boss 315 may be in a columnar shape with a polygonal section. However, for the convenience of processing, in this embodiment, the boss 315 is cylindrical, and a groove or a penetrative positioning hole 334 matched therewith is provided in the second matching plane 3322. The positioning hole 334 can be sleeved and matched with the boss 315 to form the limit structure between the cantilever shaft 330 and the cantilever body 310, so as to limit the cantilever shaft 330 to move in the axial direction of the cantilever shaft 330 relative to the cantilever body 310; and the first matching plane 3321 is matched with the first bottom surface 3431 in an abutting manner, and the second matching plane 3322 is matched with the second bottom surface 3121 in an abutting manner, such that the cantilever shaft 330 is stably fixed to the cantilever body 310. In addition, in other embodiments, the first groove 343 and the second groove 312 are matched with the periphery of the second shaft part 332 of the cantilever shaft 330, thereby enhancing the stability of the cantilever shaft 330 fixed to the cantilever body 310. In addition, in other embodiments, a boss is arranged on the second matching plane 3322, and a groove matched with the boss is provided in the second bottom surface 3121, which is also a feasible solution.
This embodiment is described by using an example where the limit structure is arranged between the second matching plane 3322 and the second bottom surface 3121. However, as those skilled in the art can anticipate, the limit structure may be arranged between the first matching plane 3321 and the first bottom surface 3431, or the limit structures may be arranged between the first matching plane 3321 and the first bottom surface 3431 as well as between the second matching plane 3322 and the second bottom surface 3121, to form a limit structure between the cantilever shaft 330 and the cantilever body 310, such that the cantilever shaft 330 can be limited to move in the axial direction of the cantilever shaft 330 relative to the cantilever body 310.
As shown in FIGS. 6 to 13, a first locking hole 342 is provided in the locking block 340, and a second locking hole 314 is provided in the cantilever body 310. The first locking hole 342 and the second locking hole 314 are configured to mount threaded fasteners so as to lock the locking block 340 onto the cantilever body 310 and clamp the second shaft part 332 of the cantilever shaft 330 between the locking block 340 and the cantilever body 310. Preferably, there are the gaps between the side surfaces of the first and second grooves 343 and 312 and the periphery of the second shaft part 332 of the cantilever shaft 330, the first matching plane 3321 is matched with the first bottom surface 3431 of the first groove 343 in an abutting manner, and the second matching plane 3322 is matched with the second bottom surface 3121 of the second groove 312 in an abutting manner, such that the cantilever shaft 330 is locked and fixed to the cantilever body 310 by the locking block 340, an angle of the cantilever shaft 330 relative to the cantilever body 310 can be adjusted, and when there are manufacturing errors in the cantilever and other parts of the elliptical machine, the cantilever shaft 330 can be accurately assembled in the corresponding guide bearing assembly 51, thereby avoiding unnecessary waste in material and processing costs.
While a detachable connection structure between the cantilever 30 and the first matching structure is used as an example in this embodiment, as those skilled in the art can anticipate, a similar structural design solution may be used for a detachable connection structure between the cantilever 30 and the third matching structure, which can also facilitate the mounting of the cantilever 30 on the elliptical machine.
While the present disclosure has been specifically shown and described with reference to preferred embodiments, it is to be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure defined by the appended claims, and all fall within the scope of protection of the present disclosure.
Patent Application
20250128119
