An elliptical machine

Abstract

This application discloses an elliptical trainer, comprising: a pendulum arm that reciprocates around a preset pendulum axis; a support rod, one end of which is hinged to axis A of the pendulum arm, and a pedal is mounted on the support rod; a connecting rod, one end of which is hinged to axis B of the pendulum arm, the preset pendulum axis being higher than axis B, and axis B being higher than axis A; and a rocker arm, one end of which is hinged to axis C of the connecting rod, and the other end of which is hinged to axis D of the support rod, axis D being higher than axis C, and axis C rotating around a preset rotation axis. During one oscillation cycle of the pendulum arm, axis C rotates one full revolution around the preset rotation axis, and axis D is always higher than axis C. During half an oscillation cycle of the pendulum arm swinging from one extreme position to another, the height difference between axis D and axis C first increases and then decreases. This design improves the overall stability of the elliptical trainer and more accurately simulates the changes in the angle of the user's feet during use, resulting in a better user experience and comfort.

Description

Technical Field

[0001] This application relates to the field of fitness equipment technology, and in particular to an elliptical machine. Background Technology

[0002] Elliptical trainers, also known as cross-training machines, are used to simulate exercises such as climbing stairs, walking, or running. They combine the advantages of treadmills and stationary bikes, allowing for a full-body workout while standing.

[0003] Patent CN120000999A discloses an adjustable stride elliptical trainer, in which the rear end of a support rod is pressed onto a rotating wheel and slidably connected to it. The support rod moves forward and backward and up and down through the swinging of the pendulum and the rotation of the wheel. However, because the rear end of the support rod is placed on the rotating wheel, it is prone to detaching, resulting in poor overall structural stability. Furthermore, the rear end of the support rod remains in contact with the rotating wheel, making it impossible to adjust the height of the support rod relative to the rotating wheel. This causes the foot pedal's tilt angle to mismatch with the foot's tilt angle during movement, easily leading to foot separation from the pedal and insufficient pedaling power, thus affecting the user experience. Utility Model Content

[0004] The purpose of this application is to provide an elliptical trainer that can improve the overall stability of the elliptical trainer and more accurately simulate the changes in the angle of the user's feet during use, so as to give the user a better experience and comfort.

[0005] To achieve the above objectives, this application provides an elliptical machine, comprising:

[0006] A pendulum, which oscillates back and forth around a preset pendulum axis;

[0007] A support rod, one end of which is hinged to the swing arm at shaft A, and a pedal is provided on the support rod;

[0008] A connecting rod, one end of which is hinged to the swing rod at axis B, wherein the preset swing axis is higher than axis B, and axis B is higher than axis A;

[0009] A rocker arm, one end of which is hinged to the other end of the connecting rod at shaft C, and the other end of which is hinged to the support rod at shaft D. Shaft D is higher than shaft C, and shaft C rotates about a preset axis.

[0010] In one swing cycle of the pendulum, the shaft C rotates around the preset pivot point once, and the shaft D is always higher than the shaft C; in half a swing cycle of the pendulum swinging from one extreme position to another, the height difference between the shaft D and the shaft C first increases and then decreases.

[0011] Preferably, the preset pendulum axis, axis A, axis B, axis C, axis D, and preset rotating axis are parallel, and the sum of the distance from axis D to axis A and the distance from axis D to axis C is greater than the distance from axis C to axis A.

[0012] Preferably, it further includes a rotating assembly disposed at a non-end position on the rocker arm and an adjusting assembly for adjusting the position of the rotating assembly relative to the rocker arm, wherein the connecting rod is rotatably connected to the rotating assembly to form the shaft B.

[0013] Preferably, the adjustment component includes:

[0014] A drive motor is fixedly mounted on the upper end of the swing arm, the power end of the drive motor extends into the swing arm, and the power end of the drive motor is provided with a screw.

[0015] A sliding seat is located inside the rocker arm and is threadedly connected to the power end of the drive motor. The rotating component is mounted on the sliding seat and moves synchronously with the sliding seat.

[0016] A slider is disposed on the inner wall of the rocker arm and cooperates with the sliding seat to restrict the sliding seat to slide only along the length direction of the rocker arm.

[0017] Preferably, the sliding seat comprises:

[0018] The slider slides in conjunction with the sliding plate.

[0019] A U-shaped frame is provided at the end of the slider facing the drive motor;

[0020] The nut sleeve has its two ends hinged to the two U-shaped walls of the U-shaped frame, and the power end of the drive motor is threadedly engaged with the nut sleeve.

[0021] Preferably, the rotating assembly includes a hinge shaft disposed on the sliding seat, and the side wall of the swing arm has an elongated hole along its length direction. The hinge shaft passes through the elongated hole and extends out of the outside of the swing arm, and the hinge shaft is movably disposed within the length range of the elongated hole.

[0022] Preferably, it further includes:

[0023] The main frame, with the swing arm located at the front end of the main frame;

[0024] A rotatable wheel is rotatably mounted at the rear end of the main frame. The wheel rotates in a vertical plane. The preset rotating shaft is the rotating shaft of the wheel. A fixed shaft is provided on the side wall of the wheel. The connecting rod and the rocker arm are rotatably connected to the fixed shaft to form the shaft C.

[0025] The handrail is rotatably mounted on the upper front end of the main frame to form the preset swing axis, and the lower end of the handrail is fixedly connected to the upper end of the swing rod.

[0026] Preferably, the number of the handrail, the swing arm, the support rod, the connecting rod, and the rocker arm are all two sets, and they are located on both sides of the wheel to form a complete elliptical machine structure.

[0027] Preferably, there are two fixed shafts, which are respectively arranged on both sides of the wheel. The connecting rods on both sides correspond to the two fixed shafts, and the two fixed shafts are respectively located at a relatively high point and a relatively low point on the same radial plane of the wheel.

[0028] Preferably, the support rod and the connecting rod located on the same side of the wheel are located in two different vertical planes so that they do not affect each other during operation.

[0029] The beneficial effect of this application is that by adding a rocker arm to the rear end of the support rod and connecting rod, the height difference between axis D and axis C will continuously change throughout the entire swing cycle of the pendulum. For example, during the swing of the pendulum from the front limit position to the rear limit position, axis C will first rise to the highest point and then gradually descend. During the movement of axis C to the highest point, the support rod and the pedal on the support rod should also move to the higher position. At this time, the legs should gradually bend, and the inclination angle of the foot should gradually increase. Due to the constraint of the rocker arm, the height difference between axis D and axis C will gradually increase, thereby increasing the upward angle of the rear end of the support rod and the corresponding inclination angle of the pedal, making it easier to match the process of the gradually increasing inclination angle of the foot. During the gradual descent of axis C from the highest point, the legs are in a state of gradually straightening backward, and the inclination angle of the foot will gradually decrease. At this time, under the constraint of the rocker arm, the height difference between axis D and axis C will gradually decrease, thereby decreasing the upward angle of the rear end of the support rod and the inclination angle of the pedal, making it easier to match the process of the gradually decreasing inclination angle of the foot.

[0030] The process of the pendulum swinging from the rear limit position to the front limit position is the same as described above, and will not be repeated here. In addition, in order to ensure that the elliptical machine has a stable motion effect, this application forms a four-bar linkage through the pendulum, support rod, connecting rod and rocker arm. In one swing cycle of the pendulum, axis C rotates around the preset axis once, and axis D is always higher than axis C, ensuring that the rocker arm and support rod can provide stable support for the pedals to stably support the human body.

[0031] As can be seen, this application changes the height difference between axis C and axis D during the movement by using a joystick, thereby changing the upward angle of the rear end of the support rod. This makes the pedals on the support rod more adaptable to changes in the inclination angle of the feet during the movement. Furthermore, the four-bar linkage ensures the overall stability of the elliptical machine and prevents the support rod from accidentally falling off. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the elliptical machine provided in the embodiments of this application;

[0034] Figure 2 In order to be in Figure 1 A schematic diagram of the other side of the elliptical machine in its current state;

[0035] Figure 3 This is a schematic diagram of the elliptical machine structure when axis C is at a high point, as provided in an embodiment of this application.

[0036] Figure 4 In order to be in Figure 3 A schematic diagram of the other side of the elliptical machine in its current state;

[0037] Figure 5 This is a schematic diagram of the rocker arm structure provided in an embodiment of this application;

[0038] Figure 6 This is a cross-sectional view of the pendulum rod provided in an embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the cooperation structure between the sliding seat and the drive motor provided in the embodiments of this application;

[0040] Figure 8 This is a schematic diagram of the elliptical trajectory of the pedal when the rotating component provided in the embodiments of this application is in different positions.

[0041] In the diagram: 1-Main frame; 2-Handrail; 3-Swing arm; 4-Connecting rod; 5-Support rod; 6-Pedal; 7-Rock arm; 8-Fixed shaft; 9-Disc; 10-Drive motor; 11-Elongated hole; 12-Hinge shaft; 13-Slider; 14-Nut sleeve; 15-U-shaped frame; 16-Slider; 17-Screw. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, an elliptical machine is provided. The elliptical machine includes a pendulum 3, a support rod 5, a connecting rod 4, and a rocker arm 7. The pendulum 3 can be used as a push-pull part or as a component connected to the push-pull part. The pendulum 3 swings around a preset pendulum axis by pushing and pulling.

[0046] One end of the support rod 5 is hinged to the swing arm 3 at shaft A, which can realize the linkage between the support rod 5 and the swing arm 3; a pedal 6 is provided on the support rod 5, with the pedal 6 facing upward, so that the user can step on it stably.

[0047] One end of the connecting rod 4 is hinged to the swing rod 3 at shaft B, and the swing shaft is preset to be higher than shaft B, and shaft B is higher than shaft A; one end of the rocker arm 7 is hinged to the other end of the connecting rod 4 at shaft C, and the other end of the rocker arm 7 is hinged to the support rod 5 at shaft D, and shaft D is higher than shaft C, and shaft C can rotate around a preset axis.

[0048] When the user steps on pedal 6, which is at a relatively high position, the pedal 6 and support rod 5 move downwards under the influence of gravity. The rear end of support rod 5, constrained by rocker arm 7, causes shaft C to rotate around a preset axis. The rotation of shaft C causes connecting rod 4 to move, which in turn pushes swing arm 3 to swing. During this swinging motion, swing arm 3 simultaneously moves pedal 6 and support rod 5 back and forth. Once one pedal 6 reaches a relatively low position, the user steps on the other pedal 6, which is at a relatively high position. The elliptical machine's components then repeat the above actions, creating a continuous cycle that allows the user to perform movements similar to running or stepping.

[0049] In one swing cycle of the pendulum 3, under the mutual constraints of the pendulum 3, support rod 5, connecting rod 4, and rocker arm 7, axis C can rotate one full revolution around a preset axis, and axis D is always higher than axis C, ensuring that the rocker arm 7 and support rod 5 can provide stable support for the pedal 6 to stably support the human body. In the half-swing cycle of the pendulum 3 swinging from one extreme position to another, the height difference between axis D and axis C first increases and then decreases, so that the height difference between axis D and axis C will change continuously throughout the entire swing cycle of the pendulum 3 to adapt to the changes in the user's foot angle during exercise.

[0050] In this embodiment, the extreme position refers to the front or rear extreme position of the pendulum 3. At the front extreme position, axis C is located at the very front of the rotation trajectory, such as... Figure 2 The left-hand position of the lever 3 is shown; at the rear limit position, axis C is located at the rear end of the rotation trajectory, as shown. Figure 1 The position of the swing arm 3 on the right side is shown in the diagram. Specifically, during the swing of the swing arm 3 from the front limit position to the rear limit position, the axis C will first rise to the highest point and then gradually descend. During the movement of the axis C to the highest point, the support rod 5 and the pedal 6 on the support rod 5 should also move to a higher position. Please refer to... Figure 3 At this point, the legs should gradually bend, and the inclination angle of the foot should gradually increase. Because the support rod 5 is constrained by the rocker arm 7, the height difference between axis D and axis C will gradually increase, thus increasing the upward angle of the rear end of the support rod 5. Correspondingly, the inclination angle of the pedal 6 will also increase, making it easier to match the gradual increase in the inclination angle of the foot. Please refer to... Figure 1 As axis C gradually descends from its high point, the legs are gradually straightening backward, and the inclination angle of the foot gradually decreases. At this time, under the constraint of rocker arm 7, the height difference between axis D and axis C gradually decreases, thereby gradually reducing the upward angle of the rear end of support rod 5 and the inclination angle of pedal 6, making it easier to match the process of the foot inclination angle gradually decreasing.

[0051] Similarly, as the swing arm 3 swings from its rear limit position to its front limit position, the shaft C will first descend to its lowest point and then gradually rise. During the descent of shaft C, the support rod 5 and the pedal 6 on the support rod 5 should also move to a lower position. Please refer to... Figure 4 At this time, the legs should gradually straighten and the feet should gradually become horizontal. The height difference between shaft D and shaft C will gradually increase, so that the rear end of support rod 5 and the front end of support rod 5 are basically at the same horizontal height, ensuring that pedal 6 can better adapt to the angle of the feet.

[0052] In summary, this application changes the height difference between axis C and axis D during the movement by using the rocker arm 7, thereby changing the upward angle of the rear end of the support rod 5. This makes the pedal 6 on the support rod 5 more adaptable to changes in the inclination angle of the foot during the movement. Furthermore, the four-bar linkage ensures the overall stability of the elliptical machine and prevents the support rod 5 from accidentally falling off.

[0053] Furthermore, the six pre-set pivots, A, B, C, D, and D axis are parallel to ensure that the four-bar linkage can rotate smoothly and steadily. Among them, the sum of the distances from axis D to axis A and from axis D to axis C is greater than the distance from axis C to axis A. That is, the lines connecting axis C and axis D, axis D and axis A, and axis C and axis A form a triangular structure, thereby ensuring that axis D cannot reach the lower side of axis C and guaranteeing the stability of the triangular structure.

[0054] It should be noted that the four-bar linkage of this application can be applied to elliptical machines with fixed strides or elliptical machines with adjustable strides. No further restrictions are imposed here, and both fall within the scope of protection of this application.

[0055] For an adjustable stride elliptical machine, it also includes a rotating assembly located at a non-end position on the swing arm 3, and an adjusting assembly that adjusts the position of the rotating assembly relative to the swing arm 3. Since both ends of the swing arm 3 need to be hinged to other components, the rotating assembly needs to be located at a non-end position on the swing arm 3. The rotating assembly is rotatably connected to one end of the connecting rod 4, thus forming shaft B at this location.

[0056] Furthermore, the adjustment assembly includes a drive motor 10, a sliding base, and a sliding plate 13, please refer to... Figures 5 to 7 The drive motor 10 is fixedly mounted on the upper end of the rocker arm 3. The power end of the drive motor 10 extends into the rocker arm 3, and the power end of the drive motor 10 is provided with a screw 17. The sliding seat is located in the hollow structure of the rocker arm 3. The sliding seat is threadedly connected to the power end of the drive motor 10, and the rotating component is mounted on the sliding seat, so that it moves synchronously with the sliding seat. The position adjustment of the shaft B is achieved through the screw and ball structure.

[0057] The slider 13 is disposed on the inner wall of the rocker arm 3 and cooperates with the sliding seat to restrict the sliding seat to slide only along the length direction of the rocker arm 3, thereby improving the sliding stability of the sliding seat.

[0058] It should be noted that this application uses a drive motor 10 to adjust the position of the rotating component. Of course, a manual adjustment method can also be used, such as using a plug-in method to plug the rotating component into different positions on the rocker arm 3 and ensuring the stability of the plug-in connection, thereby changing the position of the rotating component. As for the specific setting of the plug-in structure, this application will not elaborate further, but can refer to the prior art.

[0059] Furthermore, the sliding seat includes a slider 16, a U-shaped frame 15, and a nut sleeve 14. The slider 16 can cooperate with the slider 13 to achieve stable sliding, and the rotating component is set on the slider 16. The U-shaped frame 15 is set on the side of the slider 16 facing the drive motor 10. The two ends of the nut sleeve 14 can be hinged to the two U-shaped walls of the U-shaped frame 15 respectively. The power end of the drive motor 10 is threadedly engaged with the nut sleeve 14. When the power end of the drive motor 10 rotates, it can drive the nut sleeve 14 to move up and down. The nut sleeve 14 and the U-shaped frame 15 only retain the degree of freedom in the direction of rotation, so they will drive the U-shaped frame 15 and the slider 16 to move inside the rocker arm 3. The rotational connection between the nut sleeve 14 and the U-shaped frame 15 can prevent the force applied by the drive motor 10 to the sliding seat from interfering with the rocker arm 3, causing the sliding seat and the rocker arm 3 to jam.

[0060] The rotating assembly includes a hinge shaft 12 mounted on a sliding seat. The hinge shaft 12 is specifically mounted on the slider 16. The connecting rod 4 is rotatably connected to the hinge shaft 12, thereby forming the aforementioned shaft B. Furthermore, through the ball screw structure formed by the screw 17 and the nut sleeve 14, the position of the slider 16 can be self-locked. That is, when the screw 17 of the drive motor 10 is not rotating, the screw 17 restricts the rotation of the nut sleeve 14, thereby ensuring that the slider 16 is fixed in the designated position.

[0061] An elongated hole 11 is provided on the side wall of the swing arm 3 along its length direction. The hinge shaft 12 passes through the elongated hole 11 and extends out of the outside of the swing arm 3. The hinge shaft 12 is movable within the length range of the elongated hole 11, thereby satisfying the adjustment conditions of the rotating component at different positions.

[0062] Please refer to Figure 8 , Figure 8 The document outlines three different positional relationships for link 4: upper, middle, and lower. When axis B is located above swing arm 3, with a fixed swing amplitude, the lower end of swing arm 3 will have a larger swing amplitude, thus causing support rod 5 to have a larger swing amplitude, resulting in a larger stride amplitude for the user. (Refer to...) Figure 8 The distance along the major axis of the trajectory ellipse L1. Similarly, when axis B is located at the relative midpoint, Figure 8 The major axis distance L2 of the trajectory ellipse will be shorter than L1. Similarly, when axis B is located relatively low, the major axis distance L3 of the trajectory ellipse will be even shorter, thus achieving different amplitude adjustments.

[0063] Meanwhile, since the length of the pendulum rod 3 in this application does not change, and the support rod 5 and the connecting rod 4 are independently set, the change in the height of axis B will not affect the inclination of the support rod 5, that is, the minor axis of the trajectory ellipse will not change. Figure 5 As shown, this ensures that the user enjoys a high level of comfort.

[0064] Please refer to Figure 1The elliptical trainer also includes a main frame 1, a wheel 9, and handrails 2. The main frame 1 serves as the primary load-bearing component, supporting the aforementioned components and ensuring stable placement on the ground. The wheel 9 is located at the rear end of the main frame 1, the swing arm 3 is located at the front end of the main frame 1, and the support rod 5 and connecting rod 4 are located in the middle of the main frame 1. The handrails 2 are hinged to the upper front end of the main frame 1, forming a pre-set swing axis, and the lower end of the handrails 2 is fixedly connected to the upper end of the swing arm 3. Of course, the placement of the handrails 2 should not affect the placement of the drive motor 10; there are several ways to avoid this, which will not be detailed here.

[0065] The roulette wheel 9 is vertically oriented, meaning its rotation surface lies within a vertical plane. Please refer to [reference needed]. Figure 1 and Figure 2 A fixed shaft 8 is provided on the side wall of the wheel 9, and the connecting rod 4 and the rocker arm 7 are rotatably connected to the fixed shaft 8, thus forming shaft C.

[0066] It should be noted that when the user holds the handrail 2 and pulls the handrail 2 to rotate, the handrail 2 can drive the swing arm 3 below to swing, thereby realizing the movement of the various parts of the elliptical machine.

[0067] In order to form a complete elliptical machine structure, the number of the above-mentioned handrails 2, swing arms 3, support rods 5, connecting rods 4 and rocker arms 7 are all in two sets, and they are located on both sides of the wheel 9, so as to meet the condition of alternating between the two sides.

[0068] Additionally, please refer to Figure 1 and Figure 2 There are two fixed axes 8, which are respectively set on both sides of the wheel 9. The connecting rods 4 on both sides correspond to the two fixed axes 8, and the two fixed axes 8 are located at a relatively high point and a relatively low point on the same radial plane of the wheel 9, respectively. It should be noted that the relatively high point and the relatively low point mean that when one fixed axis 8 moves to the high point, the other fixed axis 8 moves to the low point, so as to make the movement of the elliptical machine more coordinated.

[0069] The support rod 5 and connecting rod 4, located on the same side, are situated in two different vertical planes to ensure they do not interfere with each other during operation. The support rod 5 and the swing arm 3 are on the same plane, with the hinge shaft 12 located outside the swing arm 3, and the fixed shaft 8 also having a certain extension length, allowing the connecting rod 4 to be positioned entirely outside the swing arm 3 and the support rod 5.

[0070] It should be noted that, in order to ensure the synchronization of the movement amplitude on both sides of the elliptical machine and to guarantee the user's comfort, the two sets of rotating components on both sides should be at the same height in the natural state. That is, when the swing arm 3 is hanging down naturally, the two sets of rotating components should be at the same height, so as to ensure the consistency of the elliptical trajectory of the pedals 6 on both sides.

[0071] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0072] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An elliptical machine characterized by, include: The swing arm (3) swings back and forth around a preset swing axis; Support rod (5), one end of which is hinged to the swing rod (3) at shaft A, and a pedal (6) is provided on the support rod (5); Link (4), one end of the link (4) is hinged to the swing rod (3) at shaft B, the preset swing shaft is higher than shaft B, and shaft B is higher than shaft A; A rocker arm (7), one end of which is hinged to the other end of the connecting rod (4) at shaft C, and the other end of which is hinged to the support rod (5) at shaft D. Shaft D is higher than shaft C, and shaft C rotates around a preset axis. In one swing cycle of the pendulum (3), the shaft C rotates around the preset pivot axis once, and the shaft D is always higher than the shaft C; in half a swing cycle of the pendulum (3) swinging from one extreme position to another extreme position, the height difference between the shaft D and the shaft C first increases and then decreases.

2. The elliptical machine of claim 1, wherein, The preset pendulum axis, axis A, axis B, axis C, axis D, and preset rotating axis are parallel, and the sum of the distance from axis D to axis A and the distance from axis D to axis C is greater than the distance from axis C to axis A.

3. The elliptical machine of claim 1, wherein, It also includes a rotating assembly disposed at a non-end position on the swing arm (3) and an adjusting assembly for adjusting the position of the rotating assembly relative to the swing arm (3), wherein the connecting rod (4) is rotatably connected to the rotating assembly to form the shaft B.

4. The elliptical machine of claim 3, wherein, The adjustment component includes: A drive motor (10) is fixedly installed on the upper end of the swing arm (3). The power end of the drive motor (10) extends into the swing arm (3), and the power end of the drive motor (10) is provided with a screw (17). The sliding seat is located inside the rocker arm (3) and is threadedly connected to the power end of the drive motor (10). The rotating component is mounted on the sliding seat and moves synchronously with the sliding seat. A slider (13) is disposed on the inner wall of the rocker arm (3) and cooperates with the sliding seat to restrict the sliding seat to slide only along the length direction of the rocker arm (3).

5. The elliptical machine of claim 4, wherein, The sliding seat includes: The slider (16) is in sliding engagement with the slide plate (13); A U-shaped frame (15) is provided at one end of the slider (16) facing the drive motor (10); Nut sleeve (14), the two ends of the nut sleeve (14) are respectively hinged to the two U-shaped walls of the U-shaped frame (15), and the power end of the drive motor (10) is threadedly engaged with the nut sleeve (14).

6. The elliptical machine of claim 4, wherein, The rotating assembly includes a hinge shaft (12) disposed on the sliding seat. The connecting rod (4) is rotatably connected to the hinge shaft (12) to form the shaft B. The side wall of the swing rod (3) is provided with an elongated hole (11) along its length direction. The hinge shaft (12) passes through the elongated hole (11) and extends out of the outside of the swing rod (3). The hinge shaft (12) is movably disposed within the length range of the elongated hole (11).

7. An elliptical machine according to any one of claims 1-6, wherein, Also includes: The main frame (1) has the swing arm (3) located at the front end of the main frame (1); The wheel (9) is rotatably located at the rear end of the main frame (1). The wheel (9) rotates in a vertical plane. The preset rotating shaft is the rotating shaft of the wheel (9). The side wall of the wheel (9) is provided with a fixed shaft (8). The connecting rod (4) and the rocker arm (7) are rotatably connected to the fixed shaft (8) to form the shaft C. The handrail (2) is rotatably mounted on the upper front end of the main frame (1) to form the preset swing axis. The lower end of the handrail (2) is fixedly connected to the upper end of the swing rod (3).

8. The elliptical machine of claim 7, wherein, The number of each of the handrail (2), the swing arm (3), the support rod (5), the connecting rod (4), and the rocker arm (7) is two sets, and they are located on both sides of the wheel (9) to form a complete elliptical machine structure.

9. The elliptical machine of claim 8, wherein, There are two fixed shafts (8), which are respectively arranged on both sides of the wheel (9). The connecting rods (4) on both sides correspond to the two fixed shafts (8), and the two fixed shafts (8) are respectively located at the relative high point and relative low point of the same radial plane of the wheel (9).

10. The elliptical machine of claim 8, wherein, The support rod (5) and the connecting rod (4) located on the same side are located in two different vertical planes so that they do not affect each other during operation.

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