Elliptical exercise machine

Abstract

The application discloses an elliptical trajectory fitness device, wherein the elliptical trajectory fitness device comprises a frame and a crank rocker mechanism; the frame comprises a frame body and a stand column connected to the frame body and extending in the up-down direction, the stand column comprises a first rod and a second rod which are movably connected, and the second rod is located above the first rod; the crank rocker mechanism comprises a rocker, a connecting rod and a crank member which are sequentially hinged; the top end of the rocker is hinged to the second rod, and the crank member is hinged to the frame body at the end away from the connecting rod; the hinge point of the rocker and the connecting rod is located below the hinge point of the first rod and the second rod; the rocker and / or the connecting rod are provided with a movable connecting part; in the folding state, the second rod can be folded or disassembled by being turned back relative to the first rod; the rocker and / or the connecting rod provided with the movable connecting part can be synchronously folded or disassembled through the movable connecting part; in the working state, the first rod and the second rod are relatively fixed and vertically arranged, and the movable connecting part is fixedly arranged. The elliptical trajectory fitness device can further reduce the storage volume.

Description

Technical Field

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

[0002] Elliptical trainers, as a type of aerobic fitness equipment that simulates activities such as climbing stairs and running, are widely favored for their low-impact and full-body workout characteristics. However, traditional elliptical trainers, due to the fixed structure of components such as the uprights, flywheels, and pedals, are bulky, take up a lot of space, and are inconvenient to store and pack.

[0003] To address this issue, the industry has gradually developed foldable technology. For example, the foldable fitness machine disclosed in Chinese patent CN207253645U uses the hinge point between the rocker arm and the connecting rod to achieve folding of the entire machine by setting the upright as a folding rod. While this design reduces the footprint of the elliptical track fitness machine to some extent, its folding mechanism still has significant drawbacks. Because the motion transmission relies on the hinge point between the connecting rod and the rocker arm when the upright is folded, the hinge point extends forward from the upright during folding, resulting in a large length in the front-to-back direction of the entire machine. This means that a large space still needs to be reserved when stored, making it difficult to fit snugly against a corner or in a small area. Furthermore, the packaging size of the elliptical track fitness machine in the folded state cannot be further compressed, significantly increasing transportation and storage costs.

[0004] The above content is only used to assist in understanding the technical solution of the utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0005] In view of the above problems, this utility model proposes an elliptical trajectory fitness device, which aims to solve the technical problem of the large front-to-back dimension of the elliptical trajectory fitness device after it is stored.

[0006] To achieve the above objectives, the elliptical trajectory fitness device proposed in this utility model has a working state for exercise and a folded state suitable for storage; wherein, the elliptical trajectory fitness device includes a frame and a crank-rocker mechanism;

[0007] The frame includes a frame body and a column connected to the frame body and extending in a vertical direction. The column includes a first rod and a second rod that can be movably connected, with the second rod located above the first rod.

[0008] The crank-rocker mechanism includes a rocker arm, a connecting rod, and a crank assembly that are hinged sequentially; the top end of the rocker arm is hinged to the second rod, and the end of the crank assembly away from the connecting rod is hinged to the frame; the rocker arm and / or the connecting rod are provided with a movable connecting part;

[0009] In the retracted state, the second rod can be flipped backward or folded or detached relative to the first rod; the rocker and / or connecting rod with the movable connecting part can be folded or detached synchronously through the movable connecting part; in the working state, the first rod and the second rod are relatively fixed and vertically arranged, and the movable connecting part is fixedly arranged.

[0010] In one embodiment, the rocker arm includes a lower rod segment and an upper rod segment that are hinged or detachably connected to each other. The connection between the lower rod segment and the upper rod segment forms the movable connecting part, and the connecting rod is hinged to the lower rod segment. The lower rod segment and the upper rod segment are fixedly connected by a first locking structure. When the first locking structure is in the locked state, the lower rod segment and the upper rod segment are relatively fixed. When the first locking structure is in the unlocked state, the lower rod segment and the upper rod segment can be folded backward or detached.

[0011] In one embodiment, the rear sides of the lower rod segment and the upper rod segment are hinged to each other; the first locking structure includes a first fixing plate and a first connecting member, the first fixing plate is connected to the front side of the connection between the lower rod segment and the upper rod segment, and the first fixing plate is fixedly connected to the lower rod segment and the upper rod segment through the first connecting member.

[0012] In one embodiment, the first fixing plate is non-detachably fixed to one of the lower rod segment and the upper rod segment, and the first connector passes through the first fixing plate and is detachably connected to the other of the lower rod segment and the upper rod segment.

[0013] In one embodiment, the elliptical trajectory fitness frame further includes a foot pedal assembly;

[0014] The connecting rod is hinged to the lower end of the lower rod section, and the foot pedal assembly is fixedly installed on the connecting rod; or,

[0015] The connecting rod is hinged to the upper end of the lower rod segment. The elliptical trajectory fitness device also includes a transmission rod. The foot pedal assembly is slidably mounted on the connecting rod. The two ends of the transmission rod are respectively hinged to the lower end of the lower rod segment and the foot pedal assembly.

[0016] In one embodiment, the connecting rod includes a front rod segment and a rear rod segment that are hinged or detachably connected to each other. The connection between the front rod segment and the rear rod segment forms the movable connecting portion. The front rod segment and the rear rod segment are fixedly connected by a second locking structure. When the second locking structure is in the locked state, the front rod segment and the rear rod segment are relatively fixed. When the second locking structure is in the unlocked state, the front rod segment and the rear rod segment can be folded upwards or detached.

[0017] In one embodiment, the upper sides of the front rod segment and the rear rod segment are hinged to each other; the second locking structure includes a second fixing plate and a second connecting member, the second fixing plate is connected to the lower side of the connection between the front rod segment and the rear rod segment, and the second fixing plate is fixedly connected to the front rod segment and the rear rod segment through the second connecting member.

[0018] In one embodiment, the elliptical track fitness frame further includes a foot pedal assembly mounted on the rear bar segment.

[0019] In one embodiment, the second rod can be rotated and folded rearward relative to the first rod, and the rocker or connecting rod with the movable connecting part can be bent synchronously with the second rod; in the folded state, the hinge point of the rocker and the connecting rod is located behind the front side of the first rod.

[0020] In one embodiment, the frame includes a support arm and a front support foot and a rear support foot connected to the front and rear ends of the support arm. The lower end of the first rod is fixedly connected to the front end of the support arm. A set of crank-rocker mechanisms is provided on each of the left and right sides of the support arm. In the retracted state, the rear end of the second rod is located in front of the rear support foot; or, the distance between the rear end of the second rod and the rear side of the rear support foot in the front-rear direction is less than or equal to 20% of the length of the support arm.

[0021] This utility model of an elliptical trajectory fitness device, by having the upright column include a first rod and a second rod that can be movably connected, allows the second rod to be flipped backward or detached relative to the first rod in the folded state. Simultaneously, a rocker arm or connecting rod with a movable connecting part folds or detaches through the movable connecting part. Compared to folding at the hinge point of the rocker arm and connecting rod, this reduces the distance the lower hinge point of the rocker arm extends forward beyond the upright column, or prevents the lower hinge point of the rocker arm from extending forward beyond the upright column. This further reduces the overall size of the elliptical trajectory fitness device in the front-to-back direction after folding, effectively shortening the overall length of the machine, reducing storage space and packaging size, and effectively lowering transportation and storage costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of an embodiment of the elliptical trajectory fitness device of the present invention is shown, wherein the elliptical trajectory fitness device is in the working state;

[0024] Figure 2for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 for Figure 1 Front view of a fitness machine with a medium elliptical trajectory;

[0026] Figure 4 for Figure 1 A diagram showing the elliptical track fitness machine in its closed state;

[0027] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0028] Figure 6 for Figure 4 Front view of a fitness machine with a medium elliptical trajectory;

[0029] Figure 7 This is a schematic diagram of another embodiment of the elliptical trajectory fitness device of the present invention, wherein the elliptical trajectory fitness device is in the working state;

[0030] Figure 8 for Figure 7 Front view of a fitness machine with a medium elliptical trajectory;

[0031] Figure 9 for Figure 7 A schematic diagram of the linkage and foot pedal assembly of a medium elliptical trajectory fitness machine;

[0032] Figure 10 for Figure 9 A magnified view of a section at point C;

[0033] Figure 11 for Figure 7 A diagram showing the elliptical track fitness machine in its closed state;

[0034] Figure 12 for Figure 11 Front view of a fitness machine with a medium elliptical trajectory;

[0035] Figure 13 for Figure 11 A schematic diagram of the linkage and foot pedal assembly of a medium elliptical trajectory fitness machine;

[0036] Figure 14 for Figure 13 A magnified view of a section at point D;

[0037] Figure 15 This is a schematic diagram of another embodiment of the elliptical trajectory fitness device of the present invention, wherein the elliptical trajectory fitness device is in the working state;

[0038] Figure 16 for Figure 15A schematic diagram of the elliptical track fitness machine in its closed state.

[0039] Explanation of icon numbers:

[0040] label name label name label name 100 frame 110 Frame 111 support arm 112 Front support foot 113 Rear support foot 120 Column 121 First shot 122 Second shot 200 Crank-rocker mechanism 210 Joystick 211 Lower section 212 upper section 220 link 221 Front pole section 222 Rear section 230 Crank components 240 Activity Connection Section 300 First locking structure 310 First fixing plate 320 First connector 400 Second locking structure 410 Second fixing plate 420 Second connector 500 Foot pedal assembly 600 Transmission rod

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B.

[0047] This utility model proposes an elliptical trajectory fitness device.

[0048] In this embodiment of the utility model, please refer to Figures 1 to 4 , Figures 7 to 12 The elliptical track fitness machine has a working state for exercise and a folded state suitable for storage; the elliptical track fitness machine includes a frame 100 and a crank rocker mechanism 200.

[0049] The frame 100 includes a frame body 110 and a column 120 connected to the frame body 110 and extending in the vertical direction. The column 120 includes a first rod 121 and a second rod 122 that are movably connected, with the second rod 122 located above the first rod 121.

[0050] The crank-rocker mechanism 200 includes a rocker arm 210, a connecting rod 220 and a crank component 230 that are hinged in sequence; the top end of the rocker arm 210 is hinged to the second rod 122, and the end of the crank component 230 away from the connecting rod 220 is hinged to the frame 110; the rocker arm 210 and / or the connecting rod 220 are provided with a movable connecting part 240.

[0051] In the retracted state, the second rod 122 can be flipped and folded or disassembled relative to the first rod 121; the rocker 210 and / or connecting rod 220 with the movable connecting part 240 can be folded or disassembled synchronously through the movable connecting part 240; in the working state, the first rod 121 and the second rod 122 are relatively fixed and vertically arranged, and the movable connecting part 240 is fixedly arranged.

[0052] In this embodiment, for ease of explanation, the orientation of the elliptical track fitness machine during use is used as a reference, with the left and right directions corresponding to the user's left and right feet, and the front side being the side where the upright column 120 is located. The frame 110 is used to provide support and mounting for the entire elliptical track fitness machine. Generally, the frame 110 includes a base and a flywheel frame. To reduce weight, the base may optionally include a support arm 111 and a front support leg 112 and a rear support leg 113 connected to the front and rear ends of the support arm 111. The upright column 120 is fixedly connected to the front end of the support arm 111, and the flywheel frame is used to mount the flywheel and is fixedly connected to the rear end of the support arm 111. The frame 110, flywheel, etc. of this elliptical track fitness machine can be designed with different structures and forms according to actual needs, and no specific limitations are made here. The upright column 120 can be integrally formed with the frame 110, or it can be separately formed with the frame 110 and then welded and fixed.

[0053] The upright provides a fulcrum for the rocker arm 210. In practice, to meet stride requirements, the rocker arm 210 is designed to be relatively long, thus necessitating a taller upright 120, which in turn creates a need for folding and storage. The upright 120 is divided into a first rod 121 and a second rod 122, allowing the first rod 121 and the second rod 122 to be hinged or detachably connected, enabling the second rod 122 to be folded or detached relative to the first rod 121. Generally, the first rod 121 and the second rod 122 are hinged together via a pivot. When the first rod 121 and the second rod 122 are detachably connected, they can be fixed together by insertion and bolts. Optionally, for ease of installation and folding, the second rod 122 can be rotatably connected to the first rod 121, folding backward relative to it. The height of the connection point between the first rod 121 and the second rod 122 can be designed according to the height of the flywheel and the height of the frame 100. To reduce the overall volume, the connection point of the first rod 121 and the second rod 122 can optionally be flush with the height of the frame 100, or slightly higher than the frame 100. This allows the folded second rod 122 to be horizontal or nearly horizontal, reducing the overall height of the elliptical trajectory fitness machine after storage, thereby reducing the storage and packaging volume.

[0054] It is understood that two sets of crank-rocker mechanisms 200 are provided, which are respectively located on the left and right sides of the upright to exercise the user's left and right legs respectively. The elliptical trajectory fitness device can have handrails fixedly connected to the top of the rocker arm 210 for the user to hold onto. Of course, in some embodiments, handrails may not be provided, allowing the user to drive the two crank-rocker mechanisms 200 solely with their legs.

[0055] The rocker arm 210, connecting rod 220, and crank component 230 together form a crank-rocker mechanism 200, where the length of the crank component 230 is less than the lengths of the rocker arm 210 and connecting rod 220. The rocker arm 210, connecting rod 220, crank component 230, and frame 110 are hinged together via a pivot. Generally, a foot pedal assembly 500 is mounted on the connecting rod 220. In operation, the user drives the connecting rod 220 back and forth with their feet, causing the crank component 230 to perform circular motion and the rocker arm 210 to perform a rocking motion. This results in an elliptical trajectory for the foot pedal assembly 500, satisfying exercise needs. Both the rocker arm 210 and connecting rod 220 are rod-shaped. The crank component 230 can be a rod-shaped structure or a disc-shaped structure, as long as it can perform circular motion around a fulcrum.

[0056] The joystick 210 and / or connecting rod 220 are provided with a movable connecting portion 240, which can be a hinge point or a detachable connection point. That is, when the joystick 210 is provided with the movable connecting portion 240, the joystick 210 can be folded or detached into at least two sections; when the connecting rod 220 is provided with the movable connecting portion 240, the connecting rod 220 can be folded or detached into at least two sections. It is understood that the movable connecting portion 240 can be set to one or more as needed. To reduce costs, optionally, only the first movable connecting portion 240 is provided on the joystick 210 or the connecting rod 220.

[0057] When the elliptical track fitness machine is in operation, the first rod 121 and the second rod 122 are relatively fixed and vertically arranged, and the movable connection point is fixed. At this time, the first rod 121, the second rod 122, and the movable connection point can be fixedly connected by screws, bolts, hooks, etc. The rocker arm 210 and the connecting rod 220 themselves cannot be folded or disassembled. That is, the entire crank rocker mechanism 200 operates normally. When the elliptical track fitness machine is in the retracted state, when the second rod 122 of the column 120 is folded or disassembled relative to the first rod 121, the rocker arm 210 and the connecting rod 220 can be folded or disassembled through the movable connection part 240. Compared with the method of folding at the hinge of the rocker arm 210 and the connecting rod 220, the distance that the hinge point of the rocker arm 210 and the connecting rod 220 extends forward beyond the column can be reduced, or the hinge point of the rocker arm 210 and the connecting rod 220 can be prevented from extending forward beyond the column, thereby further reducing the overall size of the elliptical track fitness machine in the front-back direction after folding.

[0058] This utility model of an elliptical trajectory fitness device, by having the column 120 include a first rod 121 and a second rod 122 that are movably connected, allows the second rod 122 to be flipped backward or detached relative to the first rod 121 in the folded state; the rocker arm 210 or connecting rod 220 with a movable connecting part 240 is folded or detached simultaneously through the movable connecting part 240. Compared to folding at the hinge of the rocker arm 210 and the connecting rod 220, this method can reduce the distance that the lower hinge point of the rocker arm 210 extends forward beyond the column, or even prevent the lower hinge point of the rocker arm 210 from extending forward beyond the column. This further reduces the overall size of the elliptical trajectory fitness device in the front-back direction after folding, thus effectively shortening the overall length of the machine in the front-back direction, reducing storage space and packaging size, and effectively reducing transportation and storage costs.

[0059] In one embodiment, such as Figures 1 to 6 As shown, the rocker arm 210 includes a lower rod segment 211 and an upper rod segment 212 that are hinged or detachably connected to each other. A movable connecting part 240 is formed at the connection between the lower rod segment 211 and the upper rod segment 212. A connecting rod 220 is hinged to the lower rod segment 211. The lower rod segment 211 and the upper rod segment 212 are fixedly connected by a first locking structure 300. When the first locking structure 300 is in the locked state, the lower rod segment 211 and the upper rod segment 212 are relatively fixed. When the first locking structure 300 is in the unlocked state, the lower rod segment 211 and the upper rod segment 212 can be folded backward or detached.

[0060] In this embodiment, the lower rod segment 211 and the upper rod segment 212 are arranged vertically and can be fixed by pivot hinge or by screw insertion. In the working state, the first locking structure 300 is used to lock and fix the lower rod segment 211 and the upper rod segment 212, preventing relative movement and ensuring reliability. When switching to the retracted state, the first locking structure 300 is unlocked, allowing the lower rod segment 211 and the upper rod segment 212 to fold backward or be disassembled. Therefore, the first locking structure 300 allows switching the fixed state of the lower rod segment 211 and the upper rod segment 212, improving reliability. The first locking structure 300 can take many forms, such as screw plates, hooks, bolts, etc. It only needs to be able to switch between the unlocked state of the lower rod segment 211 and the upper rod segment 212 and the locked state of the lower rod segment 211 and the upper rod segment 212. The structure of the first locking structure 300 is not specifically limited here.

[0061] By including a lower rod segment 211 and an upper rod segment 212 that are hinged to each other on the joystick 210, the installation process is simplified and the installation difficulty is reduced compared to making the lower rod segment 211 and the upper rod segment 212 detachable, thereby improving the user experience. Further, please refer to... Figure 2 and Figure 5The rear sides of the lower rod segment 211 and the upper rod segment 212 are hinged to each other; the first locking structure 300 includes a first fixing plate 310 and a first connecting member 320. The first fixing plate 310 is connected to the front side of the connection between the lower rod segment 211 and the upper rod segment 212, and the first fixing plate 310 is fixedly connected to the lower rod segment 211 and the upper rod segment 212 through the first connecting member 320.

[0062] In this embodiment, the first connecting member 320 can specifically be a screw, and the number of first connecting members 320 can be one, two, three, etc. This allows the rear sides of the lower rod segment 211 and the upper rod segment 212 to be hinged together, making it easier for the upper rod segment 212 to bend backward relative to the lower rod segment 211. The first fixing plate 310 can be detached from the lower rod segment 211 and the upper rod segment 212, or the first fixing plate 310 can be non-detachably fixed to one of the lower rod segment 211 and the upper rod segment 212, while the other is detachably fixed via the first connecting member 320. By fixing the lower rod segment 211 and the upper rod segment 212 together with the first fixing plate 310 and the first connecting member 320, it facilitates unlocking the lower rod segment 211 and the upper rod segment 212, while also making the fixation of the lower rod segment 211 and the upper rod segment 212 in the locked state more stable and reliable. Furthermore, the first fixing plate 310 is connected to the front side of the connection between the lower rod segment 211 and the upper rod segment 212. Compared with the side wall of the lower rod segment 211 and the upper rod segment 212, it can further ensure the connection reliability of the lower rod segment 211 and the upper rod segment 212 and avoid accidental bending of the two.

[0063] Furthermore, such as Figures 1 to 6 As shown, the first fixing plate 310 is non-detachably fixed to one of the lower rod segment 211 and the upper rod segment 212, while the first connecting member 320 passes through the first fixing plate 310 and is detachably connected to the other of the lower rod segment 211 and the upper rod segment 212. The first fixing plate 310 can be fixed to one of the lower rod segment 211 and the upper rod segment 212 by welding. By making the first fixing plate 310 non-detachably fixed to one of the lower rod segment 211 and the upper rod segment 212, compared to the first fixing plate 310 being detachably connected to both the lower rod segment 211 and the upper rod segment 212 via the first connecting member 320, the user's steps for fixing and connecting the first fixing plate 310 are simplified.

[0064] In one embodiment, please refer to Figures 1 to 3The lower rod section 211 and the upper rod section are hinged together. In the working state, the hinge point of the lower rod section 211 and the upper rod section 212 is adjacent to or flush with the connection point of the first rod 121 and the second rod 122. In this way, in the folded state, the hinge point of the lower rod section 211 and the upper rod section 212 will not extend forward beyond the column 120, or the size of the extension of the column 120 is very small. This further reduces the overall size of the machine in the front-back direction when folded, thereby further compressing the packaging and storage size of the elliptical track fitness machine in the folded state.

[0065] In conjunction with the aforementioned embodiment where the rocker arm 210 includes a lower rod segment 211 and an upper rod segment 212 that are hinged or detachably connected, the elliptical trajectory fitness frame further includes a foot pedal assembly 500; a connecting rod 220 is hinged to the lower end of the lower rod segment 211, and the foot pedal assembly 500 is fixedly installed on the connecting rod 220. Thus, while satisfying the elliptical motion trajectory of the foot pedal assembly 500, the overall structure is simple, with fewer parts and lower manufacturing costs.

[0066] In practice, the hinge point between the rocker arm 210 and the connecting rod 220 is located below the connection point of the first rod 121 and the second rod 122, which makes the tilt angle of the connecting rod 220 appropriate, improves user comfort, and shortens the length of the column 120 after folding, thereby reducing the overall size in the front and rear directions when folded.

[0067] Referring to the embodiment described above, where the rocker arm 210 includes a lower rod section 211 and an upper rod section 212 that are hinged or detachably connected to each other, see... Figure 15 and Figure 16 Furthermore, the elliptical track fitness frame also includes foot pedal components;

[0068] The connecting rod 220 is hinged to the upper end of the lower rod segment 211. The elliptical track fitness device also includes a transmission rod 600. The foot pedal assembly 500 is slidably mounted on the connecting rod 220. The two ends of the transmission rod 600 are respectively hinged to the lower end of the lower rod segment 211 and the foot pedal assembly 500.

[0069] In this embodiment, the specific structure of the foot pedal assembly 500 can refer to existing designs and will not be described in detail here. To ensure that the foot pedal assembly 500 is initially in a roughly horizontal position, the connecting rod 220 may optionally include a vertical section and a horizontal section connected to the lower end of the vertical section, with the foot pedal assembly 500 mounted on the horizontal section. By making the foot pedal assembly 500 slidable relative to the connecting rod 220, and by hinged to the lower end of the lower rod section 211 via the transmission rod 600, the step distance can be extended while enabling the foot pedal assembly 500 to achieve an elliptical trajectory. Thus, after the column 120 is folded, the upper rod section 212 of the rocker arm 210 can be detached or folded backward relative to the lower rod section 211, reducing the forward extension distance of the hinge between the lower rod section 211 and the transmission rod 600. This reduces the overall size of the machine in the front-to-back direction after folding, further compressing the packaging and storage size of the elliptical trajectory fitness device in its folded state.

[0070] In another embodiment, such as Figures 7 to 12 As shown, the connecting rod 220 includes a front rod segment 221 and a rear rod segment 222 that are hinged or detachably connected to each other. The connection between the front rod segment 221 and the rear rod segment 222 forms a movable connection portion 240. The front rod segment 221 and the rear rod segment 222 are fixedly connected by a second locking structure 400. When the second locking structure 400 is in the locked state, the front rod segment 221 and the rear rod segment 222 are relatively fixed. When the second locking structure 400 is in the unlocked state, the front rod segment 221 and the rear rod segment 222 can be folded upwards or detached.

[0071] In this embodiment, the front rod segment 221 is located in front of the rear rod segment 222, and the front rod segment 221 and the rear rod segment 222 can be fixed by pivot hinge or by inserting screws. In the working state, the second locking structure 400 is used to lock and fix the front rod segment 221 and the rear rod segment 222, so that the front rod segment 221 and the rear rod segment 222 cannot move relative to each other, thus ensuring reliability. When it is necessary to switch to the retracted state, the second locking structure 400 is unlocked, so that the front rod segment 221 and the rear rod segment 222 can be folded upwards or disassembled relative to each other. Therefore, the fixed state of the front rod segment 221 and the rear rod segment 222 can be switched by the second locking structure 400, improving the reliability of use. The second locking structure 400 can take many forms, such as screw plates, hooks, bolts, etc. It only needs to be able to switch between the unlocked state of the front rod segment 221 and the rear rod segment 222 and the locked state of the front rod segment 221 and the rear rod segment 222. The structure of the second locking structure 400 is not specifically limited here.

[0072] By including a front segment 221 and a rear segment 222 that are hinged to each other in the linkage 220, the installation process is simplified and the installation difficulty is reduced compared to making the front segment 221 and the rear segment 222 detachable, thereby improving the user experience. Further, please refer to... Figures 9 to 14 The upper sides of the front rod segment 221 and the rear rod segment 222 are hinged to each other; the second locking structure 400 includes a second fixing plate 410 and a second connecting member 420. The second fixing plate 410 is connected to the lower side of the connection between the front rod segment 221 and the rear rod segment 222, and the second fixing plate 410 is fixedly connected to the front rod segment 221 and the rear rod segment 222 through the second connecting member 420.

[0073] In this embodiment, the second connector 420 can specifically be a screw, and the number of second connectors 420 can be one, two, three, etc. This allows the upper sides of the front rod segment 221 and the rear rod segment 222 to be hinged together, making it easier for the front rod segment 221 and the rear rod segment 222 to bend upwards relative to each other. The second fixing plate 410 can be detached from the front rod segment 221 and the rear rod segment 222, or the second fixing plate 410 can be non-detachably fixed to one of the front rod segment 221 and the rear rod segment 222, while the other is detachably fixed via the second connector 420. By fixing the front rod segment 221 and the rear rod segment 222 together with the second fixing plate 410 and the second connector 420, the front rod segment 221 and the rear rod segment 222 are easily unlocked, while the fixation of the front rod segment 221 and the rear rod segment 222 in the locked state is more stable and reliable. Furthermore, the second fixing plate 410 is connected to the lower side of the connection between the front rod section 221 and the rear rod section 222. Compared with the side wall of the front rod section 221 and the rear rod section 222, it can further ensure the connection reliability of the front rod section 221 and the rear rod section 222 and avoid accidental bending of the two.

[0074] Optionally, the second fixing plate 410 is non-detachably fixed to one of the front rod segment 221 and the rear rod segment 222, while the second connector 420 passes through the second fixing plate 410 and is detachably connected to the other of the front rod segment 221 and the rear rod segment 222. The second fixing plate 410 can be fixed to one of the front rod segment 221 and the rear rod segment 222 by welding. By making the second fixing plate 410 non-detachably fixed to one of the front rod segment 221 and the rear rod segment 222, compared to making the second fixing plate 410 detachably connected to both the front rod segment 221 and the rear rod segment 222 via the second connector 420, the user's steps for fixing and connecting the second fixing plate 410 are simplified.

[0075] Furthermore, the elliptical track fitness frame also includes a foot pedal assembly 500, which is mounted on the rear bar segment 222. Thus, the hinge point between the front bar segment 221 and the rear bar segment 222 is located on the front side of the foot pedal assembly 500, ensuring that in the folded state, the foot pedal assembly 500 does not interfere with the folding of the front bar segment 221 and the rear bar segment 222. The specific structure of the foot pedal assembly 500 and its connection method with the rear bar segment 222 can be found in existing designs and will not be elaborated upon here.

[0076] In one embodiment, such as Figure 4 , Figure 6 , Figure 11 , Figure 12 As shown, the second rod 122 can be rotated and folded backward relative to the first rod 121, and the rocker arm 210 or connecting rod 220 with the movable connecting part 240 can be bent synchronously with the second rod 122; in the folded state, the hinge of the rocker arm 210 and the connecting rod 220 is located behind the front side of the first rod 121.

[0077] In this embodiment, by allowing the second rod 122 to rotate and fold rearward relative to the first rod 121, the rocker arm 210 or connecting rod 220 with the movable connecting part 240 bends synchronously. Compared to the method of disassembling the first rod 121 and the second rod 122, the segmented disassembly of the rocker arm 210 or connecting rod 220 simplifies the folding and installation steps and reduces the difficulty of folding and installation. Furthermore, in the folded state, the hinge point of the rocker arm 210 and the connecting rod 220 is located behind the front side of the first rod 121, which prevents the hinge point of the rocker arm 210 and the connecting rod 220 from extending forward out of the upright, thereby effectively reducing the overall size of the elliptical trajectory fitness device in the front-back direction after folding.

[0078] Furthermore, the frame 110 includes a support arm 111 and a front support foot 112 and a rear support foot 113 connected to the front and rear ends of the support arm 111. The lower end of the first rod 121 is fixedly connected to the front end of the support arm 111. A set of crank rocker mechanisms 200 is provided on each of the left and right sides of the support arm 111. In the retracted state, the rear end of the second rod 122 is located in front of the rear support foot 113. Alternatively, the distance between the rear end of the second rod 122 and the rear side of the rear support foot 113 in the front-rear direction is less than or equal to 20% of the length of the support arm 113.

[0079] In this embodiment, the support arm 111 and the first rod 121 can be integrally formed or separately formed and then welded together. The front support foot 112 and the rear support foot 113 can be integrally formed with the support arm 111 or separately formed and then welded or fixed with screws. The front support foot 112 and the rear support foot 113 can be rod-shaped, and their cross-sectional shape can be circular, rectangular, triangular, etc., without specific limitations. This allows the rear end of the second rod 122 to be located in front of the rear support foot 113 in the folded state; or, the distance between the rear end of the second rod 122 and the rear side of the rear support foot 113 in the front-rear direction is less than or equal to 20% of the length of the support arm 113, which can further reduce the length of the rear end of the whole machine, thereby making the overall size of the machine smaller in the front-rear direction, further reducing the storage space and packaging size, and reducing transportation and storage costs.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An elliptical trajectory fitness device, having a working state for exercise and a folded state suitable for storage; characterized in that, The elliptical trajectory fitness device includes a frame and a crank-rocker mechanism; The frame includes a frame body and a column connected to the frame body and extending in a vertical direction. The column includes a first rod and a second rod that can be movably connected, with the second rod located above the first rod. The crank-rocker mechanism includes a rocker arm, a connecting rod, and a crank assembly that are hinged sequentially; the top end of the rocker arm is hinged to the second rod, and the end of the crank assembly away from the connecting rod is hinged to the frame; the rocker arm and / or the connecting rod are provided with a movable connecting part; In the retracted state, the second rod can be flipped backward or folded or detached relative to the first rod; the rocker and / or connecting rod with the movable connecting part can be folded or detached synchronously through the movable connecting part; in the working state, the first rod and the second rod are relatively fixed and vertically arranged, and the movable connecting part is fixedly arranged.

2. The elliptical trajectory fitness device as described in claim 1, characterized in that, The rocker arm includes a lower rod segment and an upper rod segment that are hinged or detachably connected to each other. The connection between the lower rod segment and the upper rod segment forms the movable connecting part. The connecting rod is hinged to the lower rod segment. The lower rod segment and the upper rod segment are fixedly connected by a first locking structure. When the first locking structure is in the locked state, the lower rod segment and the upper rod segment are relatively fixed. When the first locking structure is in the unlocked state, the lower rod segment and the upper rod segment can be folded backward or detached.

3. The elliptical trajectory fitness device as described in claim 2, characterized in that, The rear sides of the lower rod segment and the upper rod segment are hinged to each other; the first locking structure includes a first fixing plate and a first connecting member, the first fixing plate is connected to the front side of the connection between the lower rod segment and the upper rod segment, and the first fixing plate is fixedly connected to the lower rod segment and the upper rod segment through the first connecting member.

4. The elliptical trajectory fitness device as described in claim 3, characterized in that, The first fixing plate is non-detachably fixed to one of the lower rod segment and the upper rod segment, and the first connector passes through the first fixing plate and is detachably connected to the other of the lower rod segment and the upper rod segment.

5. The elliptical trajectory fitness device as described in any one of claims 2 to 4, characterized in that, The elliptical track fitness device also includes a foot pedal assembly; The connecting rod is hinged to the lower end of the lower rod section, and the foot pedal assembly is fixedly installed on the connecting rod; or, The connecting rod is hinged to the upper end of the lower rod segment. The elliptical trajectory fitness device also includes a transmission rod. The foot pedal assembly is slidably mounted on the connecting rod. The two ends of the transmission rod are respectively hinged to the lower end of the lower rod segment and the foot pedal assembly.

6. The elliptical trajectory fitness device as described in claim 1, characterized in that, The connecting rod includes a front rod segment and a rear rod segment that are hinged or detachably connected to each other. The connection between the front rod segment and the rear rod segment forms the movable connecting part. The front rod segment and the rear rod segment are fixedly connected by a second locking structure. When the second locking structure is in the locked state, the front rod segment and the rear rod segment are relatively fixed. When the second locking structure is in the unlocked state, the front rod segment and the rear rod segment can be folded upwards or detached.

7. The elliptical trajectory fitness device as described in claim 6, characterized in that, The upper sides of the front and rear rod segments are hinged together; the second locking structure includes a second fixing plate and a second connecting member, the second fixing plate is connected to the lower side of the connection between the front and rear rod segments, and the second fixing plate is fixedly connected to the front and rear rod segments through the second connecting member.

8. The elliptical trajectory fitness device as described in claim 6, characterized in that, The elliptical track fitness device also includes a foot pedal assembly, which is mounted on the rear bar section.

9. The elliptical trajectory fitness device as described in claim 1, characterized in that, The second rod can be rotated and folded backward relative to the first rod, and the rocker or connecting rod with the movable connecting part can be bent synchronously with the second rod; in the folded state, the hinge point of the rocker and the connecting rod is located behind the front side of the first rod.

10. The elliptical trajectory fitness device as described in claim 9, characterized in that, The frame includes a support arm and front and rear support feet connected to the front and rear ends of the support arm. The lower end of the first rod is fixedly connected to the front end of the support arm. A set of crank-rocker mechanisms is provided on each of the left and right sides of the support arm. In the retracted state, the rear end of the second rod is located in front of the rear support foot; or, the distance between the rear end of the second rod and the rear side of the rear support foot in the front-rear direction is less than or equal to 20% of the length of the support arm.

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