Movable mechanism with variable moment arm and rowing fitness device

Abstract

The present utility model relates to the field of fitness equipment. Disclosed are a movable mechanism with a variable moment arm and a rowing fitness device. The technical solution is characterized by comprising: a mounting base, which can be connected to an external support structure; a movable assembly rotatably connected to the mounting base, wherein the movable assembly comprises a first rotating arm and a second rotating arm, one end of the first rotating arm is fixedly connected to one end of the second rotating arm, and a joint between the movable assembly and the mounting base is close to a joint between the first rotating arm and the second rotating arm; a counterweight assembly, which can be hooked to an exercise load, wherein one end of the counterweight assembly is slidably connected to the second rotating arm, and the sliding direction of the counterweight assembly is parallel to the length direction of the second rotating arm; and a linkage member arranged between the counterweight assembly and the mounting base, wherein when the movable assembly rotates, the linkage member can drive the counterweight assembly to slide along the second rotating arm. The present utility model has the beneficial effect that the movable mechanism of the solution can adaptively adjust a counterweight moment arm during exercise, thereby maintaining a more stable counterweight and ensuring a fitness effect.

Description

Variable lever arm movable mechanism and rowing fitness device Technical Field

[0001] This utility model relates to the field of fitness equipment, specifically to a movable mechanism with a variable lever arm and a rowing fitness device. Background Technology

[0002] Fitness equipment is frequently used in modern fitness exercises. For arm movements, swinging physical structures are often used as auxiliary mechanisms. Most existing fitness equipment uses separate lever arms for gripping and for driving the counterweight. For ease of explanation, the lever arm for gripping will be referred to as the "grip lever arm," and the lever arm for driving the counterweight will be referred to as the "counterweight lever arm."

[0003] Because the physical structures of the grip arm and the counterweight arm make it difficult to ensure that their rotation axes are concentric, the rotation path of the grip position on the grip arm and the rotation path of the counterweight on the counterweight arm will not match during exercise. As a result, the circumferential path corresponding to the hand grip position and the circumferential path of the counterweight movement are not concentric during the rotation of the grip arm. For the user, this means that the force fed back by the counterweight changes during exercise, and may even decrease, affecting the exercise effect. Utility Model Content

[0004] To address one of the shortcomings of existing technologies, this utility model provides a movable mechanism with a variable lever arm and a rowing fitness device, solving the problem of weight changes during arm movements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a movable mechanism with a variable lever arm, comprising:

[0006] The mounting base can be connected to an external support structure;

[0007] The movable component is rotatably connected to the mounting base. The movable component includes a first rotating arm and a second rotating arm, with one end of the first rotating arm and one end of the second rotating arm fixedly connected. The connection between the movable component and the mounting base is close to the connection between the first rotating arm and the second rotating arm.

[0008] The counterweight assembly can be used to attach a load for movement. One end of the counterweight assembly is slidably connected to the second rotating arm, and its sliding direction is parallel to the length direction of the second rotating arm.

[0009] A linkage is provided between the counterweight assembly and the mounting base. When the movable assembly rotates, the linkage can drive the counterweight assembly to slide along the second rotating arm.

[0010] Preferably, the active component further includes:

[0011] The slide bar is fixedly connected to the second rotating arm, and the slide bar and the second rotating arm are parallel; the counterweight assembly is slidably connected to the slide bar.

[0012] Preferably, the counterweight assembly includes:

[0013] The first connecting part is slidably connected to the slide rod;

[0014] The second connecting part is connected to the first connecting part and extends to the outside of the active component. The second connecting part can be used to attach a barbell plate.

[0015] Preferably, the counterweight assembly further includes:

[0016] An intermediate component is disposed between the first connecting part and the second connecting part;

[0017] The linkage is a rod, with one end rotatably connected to the mounting base and the other end rotatably connected to the intermediate component.

[0018] Preferably, the active component further includes:

[0019] A guide structure is disposed between the counterweight assembly and the second rotating arm, and the guiding direction of the guide structure is parallel to the sliding direction of the counterweight assembly.

[0020] Preferably, the guide structure includes:

[0021] A guide plate is fixedly connected to the second rotating arm, and the length direction of the guide plate is parallel to the length direction of the second rotating arm.

[0022] The guide wheel is rotatably connected to the intermediate component. The guide wheel is located on the lower side of the guide plate, and the upper end face of the guide wheel is in contact with the lower side face of the guide plate.

[0023] Preferably, the organization of this activity also includes:

[0024] A grip component is disposed on the movable component and is fixedly disposed at the end of the first rotating arm away from the second rotating arm; the grip component can provide the user with a longitudinal or lateral grip position.

[0025] Preferably, the organization of this activity also includes:

[0026] The support component can be fixedly connected to the external support structure, and the support component is located below the second rotating arm.

[0027] Rowing fitness equipment, using the activity mechanisms described above, also includes:

[0028] The support mechanism is a frame that can be placed on the ground; there are two movable mechanisms, which are arranged in a mirror-symmetric manner on the support mechanism.

[0029] The load-bearing mechanism, connected to the support mechanism, is used to support the user's body.

[0030] Preferably, the support mechanism includes:

[0031] The base frame is in contact with the ground;

[0032] Mount it on the shelf and fix it to the base frame;

[0033] The counterweight frame, connected to the upper frame, can suspend counterweights for exercise.

[0034] The bearing mechanism includes:

[0035] A support frame, on which a seat cushion and a chest cushion are provided, and the lower end of the support frame is rotatably connected to the base frame;

[0036] An adjustment component, located between the support frame and the upper frame, allows for adjustment of the position of the support frame;

[0037] The pedal assembly, connected to the base frame, can be used for foot pedaling.

[0038] Compared with existing technologies, it has the following beneficial effects:

[0039] 1. The activity mechanism of this solution can adaptively adjust the counterweight lever arm during exercise, thereby maintaining a more stable counterweight and ensuring the fitness effect.

[0040] 2. The moving mechanism of this solution is formed in the form of mechanical linkage, which will not bring additional equipment energy consumption.

[0041] 3. The activity mechanism and external structure of this solution have a simple connection form, making it easier to adapt to different fitness equipment. Attached Figure Description

[0042] Figure 1 is a schematic diagram of the overall structure of the activity mechanism according to an embodiment of this application;

[0043] Figure 2 is a schematic diagram of the overall structure of the activity mechanism according to an embodiment of this application;

[0044] Figure 3 is a schematic diagram of the overall structure of the activity mechanism according to an embodiment of this application;

[0045] Figure 4 is a front view of the active mechanism according to an embodiment of this application;

[0046] Figure 5 is a schematic diagram of the overall structure of the rowing fitness device according to an embodiment of this application;

[0047] Figure 6 is a front view of the rowing fitness device according to an embodiment of this application;

[0048] Figure 7 is a top view of the rowing fitness device according to an embodiment of this application.

[0049] In the picture:

[0050] 1. Supporting mechanism; 11. Base frame; 12. Upper frame; 13. Counterweight frame;

[0051] 2. Movable mechanism; 21. Mounting base; 22. Movable component; 221. First rotating arm; 222. Second rotating arm; 223. Slide rod; 23. Counterweight assembly; 231. First connecting part; 232. Second connecting part; 233. Intermediate component; 24. Linkage component; 25. Grip assembly; 26. Support assembly;

[0052] 3. Load-bearing mechanism; 31. Load-bearing frame; 32. Adjustment assembly; 33. Pedal assembly. Detailed Implementation

[0053] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0054] Please refer to Figures 1-4. This application provides the following technical solutions:

[0055] The movable mechanism with a variable lever arm includes a mounting base 21 for connection to an external support structure. A movable component 22 and a linkage 24 are rotatably connected at two positions on the mounting base 21. The movable component 22 includes a first rotating arm 221 and a second rotating arm 222. One end of the first rotating arm 221 and one end of the second rotating arm 222 are fixedly connected. The first rotating arm 221 and the second rotating arm 222 are approximately "L"-shaped, and a reinforcing member is provided at their connection point. A rotating shaft is provided on the outer side of the connection point between the first rotating arm 221 and the second rotating arm 222 of the movable component 22, and the component is rotatably connected to the mounting base 21 via the rotating shaft.

[0056] A gripping component 25 is provided at the end of the first rotating arm 221 of the movable component 22 away from the second rotating arm 222. A counterweight component 23 is slidably connected to the second rotating arm 222, with one end of the counterweight component 23 slidably connected to the second rotating arm 222, and its sliding direction is parallel to the length direction of the second rotating arm 222; the counterweight component 23 is used to hang a load for exercise, such as a barbell plate. A linkage 24 is provided between the counterweight component 23 and the mounting base 21. When the movable component 22 rotates, the linkage 24 can drive the counterweight component 23 to slide along the second rotating arm 222.

[0057] The counterweight assembly 23 is attached to a barbell plate. When exercise begins, the movable assembly 22 rotates counterclockwise. Simultaneously, the linkage assembly 24 drives the counterweight assembly 23 to slide along the second rotating arm 222, gradually moving away from the first rotating arm 221. This ensures that the distance between the counterweight assembly 23 and the axis of rotation of the movable assembly 22 is variable. This variable distance provides the user with minimal changes in training resistance, thus ensuring stable exercise results.

[0058] Based on the above implementation scheme, this scheme provides a specific structural form for the sliding connection of the counterweight component 23 and the second rotating arm 222. The movable component 22 also includes a slide rod 223, which is fixedly connected to the second rotating arm 222 through a slide rod bracket. The slide rod 223 and the second rotating arm 222 are parallel. The counterweight component 23 and the slide rod 223 are slidably connected.

[0059] The counterweight assembly 23 includes a first connecting part 231 and a second connecting part 232, wherein the first connecting part 231 is slidably connected to the slide bar 223; the second connecting part 232 is connected to the first connecting part 231, the second connecting part 232 extends to the outside of the movable assembly 22, and the second connecting part 232 can be used to hang a barbell plate.

[0060] An intermediate member 233 is provided between the first connecting part 231 and the second connecting part 232. The linkage member 24 is a rod body. One end of the linkage member 24 is rotatably connected to the mounting base 21, and the other end is rotatably connected to the upper part of the intermediate member 233.

[0061] The connection point between the linkage 24 and the mounting base 21 is located above the connection point between the movable component 22 and the mounting base 21.

[0062] The aforementioned linkage function can be achieved through the structure of this solution. For ease of explanation, taking the direction shown in Figure 4 as an example, when the movement begins, the movable component 22 rotates counterclockwise, and the linkage component 24 also rotates counterclockwise synchronously. As the second rotating arm 222 rotates, the linkage component 24 pushes the counterweight component 23 to rotate along the slide rod 223 towards the left end of the second rotating arm 222. The opposite occurs when the movable component 22 rotates clockwise.

[0063] Based on the above implementation scheme, in order to enhance the stability of the counterweight component 23, the movable component 22 also includes a guide structure, which is disposed between the counterweight component 23 and the second rotating arm 222, and the guiding direction of the guide structure is parallel to the sliding direction of the counterweight component 23.

[0064] The guiding structure provides additional guidance for the movement of the counterweight assembly 23, besides the sliding rod 223. There are many possible structural forms; this solution provides one specific implementation. The guiding structure includes a guide plate, which is fixedly connected to the second rotating arm 222. The length direction of the guide plate is parallel to the length direction of the second rotating arm 222. A guide wheel is rotatably connected to the lower part of the intermediate component 233. The guide wheel is located below the guide plate, and its upper surface is in contact with the lower surface of the guide plate.

[0065] Based on the above implementation scheme, the linkage 24 can adopt a telescopic rod structure, with locking components installed between the telescopic structures of its rod. By adjusting the length of the linkage 24 rod, the counterweight load can be finely adjusted.

[0066] Based on the above implementation scheme, the grip component 25 of this scheme is fixedly disposed at the end of the first rotating arm 221 away from the second rotating arm 222; the grip component 25 can provide the user with a longitudinal or lateral grip position. Referring to Figure 3, the grip component 25 includes a vertical bar and a horizontal bar, and grip sleeves made of elastic material can be respectively provided on the vertical bar and the horizontal bar. Providing two grip positions in two directions through the vertical bar and the horizontal bar can improve the user's comfort and make it easier for the user to change to their preferred grip method. In addition, different grip methods will result in different training positions for the arm muscles.

[0067] Based on the above implementation scheme, this active mechanism also includes a support component 26, which can be fixedly connected to an external support structure. The support component 26 is located below the second rotating arm 222. The support component 26 mainly restricts the rotation path of the second rotating arm 222, and a pad is provided on the contact side with the second rotating arm 222.

[0068] The variable lever arm mechanism in this solution can be applied to various fitness movements, such as rowing, chest press, shoulder press, high pull, etc., and can be selectively used and matched according to actual conditions.

[0069] This solution presents a rowing fitness device using this mechanism, as shown in Figures 5 to 7. The rowing fitness device includes a support mechanism 1, which is a frame that can be placed on the ground. Two movable mechanisms 2 are mounted on the support mechanism 1, arranged symmetrically on both sides of the support mechanism 1. A supporting mechanism 3 is also provided on the support mechanism 1 to support the user's body.

[0070] Based on the above implementation scheme, the support mechanism 1 includes a base frame 11 placed on the ground, the base frame 11 being T-shaped, and an upper frame 12 fixedly mounted on the base frame 11. The connection between the upper frame 12 and the base frame 11 forms an A-shape, and a diagonal bar is also provided between the upper part of the upper frame 12 and the base frame 11. Counterweight frames 13 are provided on both sides of the upper frame 12, and the counterweight frames 13 can suspend counterweights used for exercise, i.e., barbell plates.

[0071] The support mechanism 3 includes a support frame 31 and an adjustment assembly 32. The support frame 31 is equipped with a seat cushion and a chest pad, and its lower end is rotatably connected to the base frame 11. The adjustment assembly 32 is located between the support frame 31 and the inclined rod of the upper frame 12, allowing adjustment of the position of the support frame 31. Furthermore, a foot pedal assembly 33 is also provided on the base frame 11 for foot pedal operation.

[0072] Based on the above implementation scheme, the adjustment component 32 is a telescopic rod structure. One end of the rod is rotatably connected to the side of the support frame 31 near the chest pad, and the other end is rotatably connected to the diagonal rod. A locking structure is provided between the inner and outer rods of the telescopic rod. Through this structure, the inclination of the support frame 31 can be adjusted to accommodate different users.

[0073] Based on the above implementation scheme, referring to Figure 7, the pedal assembly 33 includes two sets of pedals, which are respectively set in high and low positions to facilitate user selection.

[0074] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do 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, and therefore should not be construed as a limitation of this application.

[0075] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," 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 communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0076] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0077] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0078] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0079] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A movable mechanism with a variable lever arm, characterized in that, include: The mounting base can be connected to an external support structure; The movable component is rotatably connected to the mounting base. The movable component includes a first rotating arm and a second rotating arm, with one end of the first rotating arm and one end of the second rotating arm fixedly connected. The connection between the movable component and the mounting base is close to the connection between the first rotating arm and the second rotating arm. The counterweight assembly can be used to attach a load for movement. One end of the counterweight assembly is slidably connected to the second rotating arm, and its sliding direction is parallel to the length direction of the second rotating arm. A linkage is provided between the counterweight assembly and the mounting base. When the movable assembly rotates, the linkage can drive the counterweight assembly to slide along the second rotating arm.

2. The movable mechanism with a variable lever arm as described in claim 1, characterized in that, The activity component also includes: The slide bar is fixedly connected to the second rotating arm, and the slide bar and the second rotating arm are parallel; the counterweight assembly is slidably connected to the slide bar.

3. The movable mechanism with a variable lever arm as described in claim 2, characterized in that, The counterweight assembly includes: The first connecting part is slidably connected to the slide rod; The second connecting part is connected to the first connecting part and extends to the outside of the active component. The second connecting part can be used to attach a barbell plate.

4. The movable mechanism with a variable lever arm as described in claim 3, characterized in that, The counterweight assembly also includes: An intermediate component is disposed between the first connecting part and the second connecting part; The linkage is a rod, with one end rotatably connected to the mounting base and the other end rotatably connected to the intermediate component.

5. The movable mechanism with a variable lever arm as described in claim 4, characterized in that, The activity component also includes: A guide structure is disposed between the counterweight assembly and the second rotating arm, and the guiding direction of the guide structure is parallel to the sliding direction of the counterweight assembly.

6. The movable mechanism with a variable lever arm as described in claim 5, characterized in that, The guiding structure includes: A guide plate is fixedly connected to the second rotating arm, and the length direction of the guide plate is parallel to the length direction of the second rotating arm. The guide wheel is rotatably connected to the intermediate component. The guide wheel is located on the lower side of the guide plate, and the upper end face of the guide wheel is in contact with the lower side face of the guide plate.

7. The movable mechanism with a variable lever arm as described in claim 6, characterized in that, This event also includes: A grip component is disposed on the movable component and is fixedly disposed at the end of the first rotating arm away from the second rotating arm; the grip component can provide the user with a longitudinal or lateral grip position.

8. The movable mechanism with a variable lever arm as described in claim 7, characterized in that, This event also includes: The support component can be fixedly connected to the external support structure, and the support component is located below the second rotating arm.

9. A rowing fitness device, characterized in that, Using the active mechanism as described in any one of claims 1-8, it further includes: The support mechanism is a frame that can be placed on the ground; there are two movable mechanisms, which are arranged in a mirror-symmetric manner on the support mechanism. The load-bearing mechanism, connected to the support mechanism, is used to support the user's body.

10. The rowing fitness device as described in claim 9, characterized in that, The supporting structure includes: The base frame is in contact with the ground; Mount it on the shelf and fix it to the base frame; The counterweight frame, connected to the upper frame, can suspend counterweights for exercise. The bearing mechanism includes: A support frame, on which a seat cushion and a chest cushion are provided, and the lower end of the support frame is rotatably connected to the base frame; An adjustment component, located between the support frame and the upper frame, allows for adjustment of the position of the support frame; The pedal assembly, connected to the base frame, can be used for foot pedaling.

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