A force varying system

Abstract

The utility model relates to the field of body -building equipment, and specifically is a variable force system, including steel cable and weight device, and one end of steel cable is connected with weight device, and the other end outputs load for training, and at least 1 group steel cable switching device is arranged at one end of weight device. The utility model breaks the problem that traditional steel cable type weight device variable force is inconvenient and the structure is complex, and provides a brand-new variable force mode and variable force system for steel cable type weight. Setting up on the side close to weight device can greatly improve the adaptability of steel cable system and can increase more training positions. The problem of force change is solved from the weight source, and more force matching is provided for training. After the change from the weight source, the optimization and promotion of the overall layout of the body -building equipment are provided with basic structure support.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a variable force system. Background Technology

[0002] Currently, most traditional fly trainers on the market use a pin-type weight selection system to adjust resistance. Users select the desired weight by inserting a pin into the corresponding hole in the weight stack.

[0003] Although US Patent 8465400B1 describes a scheme that enables a bird trainer to achieve multiple variable forces, all of them achieve variable forces by adding steel cables and merging the steel cables at the output end, making the steel cable system complex and difficult to install and operate. Therefore, there is an urgent need for a technical solution to solve the problem of adjusting the counterweight output force of the bird trainer. Utility Model Content

[0004] This utility model provides a variable force system to solve existing problems, including a steel cable and a load-bearing device. One end of the steel cable is connected to the load-bearing device, and the other end outputs a load for training. At least one set of steel cable switching devices is provided at one end of the load-bearing device.

[0005] This invention changes the traditional method of increasing load capacity by merging steel cables through a steel cable switching device. In addition to directly selecting the iron, it adds a more convenient solution to change the load at the source of the load.

[0006] Furthermore, the load-bearing device is the selector iron of the bird training mechanism, and the steel cable includes a load steel cable and an output steel cable. A steel cable switching device is provided at the output end of the selector iron.

[0007] The steel cable, as a load-bearing carrier, consists of two sections: one connected to the selector iron, and the other responsible for outputting force.

[0008] Furthermore, the cable switching device includes an adjustment frame, which is fixedly connected to the frame of the bird training mechanism on the side near the selector iron. A guide rod is fixedly connected to the adjustment frame in the vertical direction. A movable pulley frame is set along the guide rod. A switch is provided on the adjustment frame. One end of the load cable is connected to the selector iron, and the other end passes through the upper pulley of the movable pulley frame and is connected to the limit post.

[0009] The switch on the adjustment frame is responsible for connecting and disconnecting from the limit post.

[0010] Furthermore, the switch can also be located at both ends of the limit post.

[0011] After a switch is installed on the limit post, the switch is responsible for connecting and disconnecting the adjustment frame from the limit post, and is an alternative way to achieve connection and disconnection.

[0012] The implementation of the cable switching device is not limited to the one described in this utility model. Its core principle is that after the cable passes through a pulley, it can switch between single and double cable modes. When the switch on the adjusting frame is closed, the limiting post is fixedly connected to the adjusting frame, and the load cable is in double cable mode, which can achieve 1 / 1 output force of the load-bearing device weight. When the switch on the adjusting frame is open, the limiting post is disengaged from the adjusting frame and connected to the limiting groove, and the cable is in single cable mode, achieving 1 / 2 output force of the load-bearing device weight.

[0013] Furthermore, the switch includes a rotating shaft hook assembly, with hooks fixed to the rotating shaft hook assembly that passes through the adjustment frame, and the hooks are arranged on both sides of the adjustment frame.

[0014] There are various types of switches; this description focuses on only one type that uses a hook to switch between single and double load cables.

[0015] The upper end of the movable pulley block frame is equipped with a limiting groove, and a limiting post is connected to the limiting groove. The hook is connected to the limiting post. When the hook is open, the limiting post and the limiting groove are connected; when the hook is closed, the hook and the limiting post are connected.

[0016] This utility model achieves the switching between single and double steel cables by connecting and disconnecting the hook, the limiting post, and the limiting groove. This is only one implementation of this utility model. All possible ways of switching between single and double steel cables that can be easily conceived by those skilled in the art are included in the conceptual scheme of this utility model.

[0017] A movable pulley frame must be equipped with at least one pulley.

[0018] The core working principle of this utility model is as follows: After selecting the iron for the load-bearing steel cable connection, the steel cable switching device switches between single-cable and double-cable modes. In single-cable mode, the output steel cable exerts half the force, while in double-cable mode, it exerts one-tenth of the force. This utility model, either by itself or in combination with other moving and fixed pulleys, can achieve force output ratios of 1:1 / 4, 1:1 / 3, 1:2 / 3, 1:1 / 2, 1:1, and 1:2. When the iron weight is fixed, it provides a wider range of adjustable output force for the load-bearing training mechanism.

[0019] In one embodiment, when switching between 1 / 1 force and 1 / 2 force, the movable pulley frame is equipped with upper and lower pulleys, and the operation process of the cable switching device is as follows:

[0020] 1 / 1 force: In the initial state, when the rotating shaft hook assembly rotates, it drives the hook to hook onto the limit post, causing the load steel cable to switch to the double steel cable mode. The output steel cable passes through the lower pulley of the moving pulley frame, which is 1 / 1 of the selected iron weight, that is, the output force is 1 / 1.

[0021] When the rotating shaft hook assembly rotates in the opposite direction, it causes the hook to release the limit post. The limit post is stuck in the limit groove of the moving pulley frame. At this time, the load cable switches to single cable mode. The output cable passes through the lower pulley of the moving pulley frame. The output force is 1 / 2 of the selected iron weight, that is, the output force is 1 / 2.

[0022] The beneficial effects of this utility model are:

[0023] 1. The variable force system breaks through the problems of inconvenient force variation and complex structure of traditional steel cable load-bearing devices, and provides a brand-new force variation method and system for steel cable loads.

[0024] 2. Setting the variable force system on the side closer to the variable force system can greatly improve the adaptability of the cable system and allow for more training positions.

[0025] 3. The variable force system addresses the issue of force variation at the source of the load, providing more force ratios for training.

[0026] 4. The variable force system provides basic structural support for the optimization and improvement of the overall layout of fitness equipment after the load source can be changed. Attached Figure Description

[0027] Figure 1 A schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0028] Figure 2 Cross-sectional structural schematic diagram of Embodiment 1 of this utility model;

[0029] Figure 3 Key structural diagram of Embodiment 1 of this utility model;

[0030] Figure 4 Exploded view of the key structure of Embodiment 1 of this utility model;

[0031] Figure 5 A schematic diagram of 1 / 1 force in Embodiment 1 of this utility model;

[0032] Figure 6 A schematic diagram of half force in Embodiment 1 of this utility model;

[0033] Figure 7 A schematic diagram of the 1 / 1 and 2 / 1 switching in Embodiment 2 of this utility model;

[0034] Figure 8 A schematic diagram of the 1 / 1 and 2 / 1 switching in Embodiment 3 of this utility model;

[0035] Figure 9 A schematic diagram of the 1 / 3 and 2 / 3 switching in Embodiment 4 of this utility model;

[0036] Figure 10A schematic diagram of the 1 / 3 and 2 / 3 switching of Embodiment 5 of this utility model;

[0037] Figure 11 A schematic diagram of the 1 / 2 and 1 / 4 switching of Embodiment 6 of this utility model;

[0038] Figure 12 A schematic diagram of the 1 / 2 and 1 / 4 switching of Embodiment 7 of this utility model;

[0039] In the diagram: 1. Rotary shaft hook assembly, 2. Adjustment frame, 3. Hook, 4. Limiting post, 5. Moving pulley assembly, 6. Load cable, 7. Output cable, 8. Guide rod, 9. Selector iron. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] like Figure 1-4 The diagram shows a variable force system, including a selection iron 9 and a steel cable of a bird training mechanism. A steel cable switching device is provided at the output end of the selection iron 9. The steel cable switching device includes an adjustment frame 2, which is fixedly connected to a frame near the selection iron. A guide rod 8 is fixedly connected to the adjustment frame 2 in the vertical direction. A movable pulley frame 5 is set along the guide rod 8. A rotating shaft hook assembly 1 is provided on one side of the adjustment frame 2, which passes through the adjustment frame 2. A hook 3 is fixed to the rotating shaft hook assembly 1. The hook 3 is set on both sides of the adjustment frame 2. A limiting groove is provided at the upper end of the movable pulley frame 5. One end of the load steel cable 6 is connected to the selection iron 9, and the other end passes through the upper pulley of the movable pulley frame 5 and is connected to the limiting post 4.

[0043] The core working principle of this utility model is as follows: After the load steel cable 6 is connected to the selected iron 9, it is switched to single steel cable mode and double steel cable mode through the steel cable switching device. In single steel cable mode, the output steel cable 7 outputs half the force, and in double steel cable mode, the output steel cable 7 outputs half the force. This utility model structure itself or in combination with other moving and fixed pulley combinations can achieve force output ratios of 1:1 / 4, 1:1 / 3, 1:2 / 3, 1:1 / 2, 1:1, and 1:2. When the selected iron weight is fixed, it provides a wider range of output force adjustment for the load-bearing output force of the flying bird training mechanism.

[0044] When switching between 1 / 1 force and 1 / 2 force, the operation process of the cable switching device is as follows:

[0045] At 1 / 1 force, such as Figure 5 As shown, in the initial state, when the rotating shaft hook assembly 1 rotates, it drives the hook 3 to hook the limit post 4, which switches the load steel cable 6 to the double steel cable mode. The output steel cable 7 passes through the lower pulley of the moving pulley frame 5, which is 1 / 1 of the weight of the selected iron 9, that is, the output force is 1 / 1.

[0046] At 1 / 2 force, such as Figure 6 As shown, when the rotating shaft hook assembly 1 rotates in the opposite direction, it causes the hook 3 to release the limiting post 4. The limiting post 3 is stuck in the limiting groove of the moving pulley frame 5. At this time, the load steel cable 6 switches to single steel cable mode, and the output steel cable 7 passes through the lower pulley of the moving pulley frame 5. The output force is 1 / 2 of the weight of the selected iron 9, that is, the output force is 1 / 2.

[0047] Example 2

[0048] When switching between 1 / 1 force and 2 / 1 force, the operation process of the cable switching device is as follows:

[0049] like Figure 7 As shown, the upper end of the movable pulley frame 5 is equipped with a pulley, and the lower end is connected to the output steel cable 7. When the force is 1 / 1, the hook 3 releases the limit post 4. At this time, the load steel cable 6 switches to single steel cable mode, and the output steel cable 7 directly outputs 1 / 1 of the weight of the selected iron 9, that is, outputs 1 / 1 force.

[0050] At 2 / 1 force, hook 3 hooks onto limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 2 / 1 of the weight of iron 9, that is, outputs 2 / 1 force.

[0051] Everything else is the same as in Example 1.

[0052] Example 3

[0053] When switching between 1 / 1 force and 2 / 1 force, the operation process of the cable switching device is as follows:

[0054] like Figure 8 As shown, a set of movable pulleys is connected to the output end of the selector iron 9. The selector iron cable passes through one end of the movable pulley and is fixed, while the other end is connected to the selector iron 9. The load cable 6 is connected to the movable pulley. At this time, the load cable 6 is twice the weight of the selector iron 9.

[0055] At 1 / 1 force, hook 3 releases limit post 4, at which point load cable 6 switches to single cable mode, and output cable 7 directly outputs 1 / 1 of the weight of selected iron 9, that is, outputs 1 / 1 force.

[0056] At 2 / 1 force, hook 3 hooks onto limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 2 / 1 of the weight of iron 9, that is, outputs 2 / 1 force.

[0057] Everything else is the same as in Example 1.

[0058] Example 4

[0059] The operation process of the cable switching device during the 1 / 3 and 2 / 3 switching is as follows:

[0060] like Figure 9As shown, a fixed pulley is added to the output force end. One end of the output steel cable 7 is connected to the movable pulley frame 5, and the other end passes through the fixed pulley and then through the lower pulley of the movable pulley frame 5.

[0061] At 1 / 3 force, hook 3 releases limit post 4, at which point load cable 6 switches to single cable mode, and output cable 7 directly outputs 1 / 3 of the weight of selected iron 9, that is, outputs 1 / 3 force.

[0062] At 2 / 3 force, hook 3 engages with limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 2 / 3 of the weight of iron 9, i.e., outputs 2 / 3 force.

[0063] Everything else is the same as in Example 1.

[0064] Example 5

[0065] like Figure 10 As shown, select iron 9 is equipped with one fixed pulley and one movable pulley. One end of the load cable 6 is connected to the movable pulley of the select iron, and the other end first passes through the fixed pulley, then around the movable pulley of the select iron, and finally passes through the upper pulley of the movable pulley assembly 5 and connects to the limit post 4. The output cable 7 is directly connected to the movable pulley assembly 5.

[0066] At 1 / 3 force, hook 3 releases limit post 4, at which point load cable 6 switches to single cable mode, and output cable 7 directly outputs 1 / 3 of the weight of selected iron 9, that is, outputs 1 / 3 force.

[0067] At 2 / 3 force, hook 3 engages with limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 2 / 3 of the weight of iron 9, i.e., outputs 2 / 3 force.

[0068] Everything else is the same as in Example 1.

[0069] Example 6

[0070] The operation process of the cable switching device during the 1 / 2 and 1 / 4 switching is as follows:

[0071] like Figure 11 As shown, two movable pulleys are added to the lower end of the movable pulley frame 5, and a fixed pulley is added to the lower far end. The output cable 7 first passes over one movable pulley of the movable pulley frame 5, then passes over the fixed pulley, and then passes over the other movable pulley.

[0072] At 1 / 4 force, hook 3 releases limit post 4, at which point load cable 6 switches to single cable mode, and output cable 7 directly outputs 1 / 4 of the weight of selected iron 9, that is, outputs 1 / 4 force.

[0073] At 1 / 2 force, hook 3 hooks onto limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 1 / 2 of the weight of iron 9, that is, outputs 1 / 2 force.

[0074] Everything else is the same as in Example 1.

[0075] Example 7

[0076] The operation process of the cable switching device during the 1 / 2 and 1 / 4 switching is as follows:

[0077] like Figure 12 As shown, a movable pulley is added at the selected iron 9. One end of the load steel cable 6 is fixed, and the other end passes through the movable pulley and is connected to the limiting post 4 of the movable pulley frame 5.

[0078] At 1 / 4 force, hook 3 releases limit post 4, at which point load cable 6 switches to single cable mode, and output cable 7 directly outputs 1 / 4 of the weight of selected iron 9, that is, outputs 1 / 4 force.

[0079] At 1 / 2 force, hook 3 hooks onto limit post 4. At this time, load cable 6 switches to dual cable mode, and output cable 7 outputs 1 / 2 of the weight of iron 9, that is, outputs 1 / 2 force.

[0080] Everything else is the same as in Example 1.

[0081] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A variable force system, comprising a steel cable and a load-bearing device, characterized in that: One end of the steel cable is connected to the load-bearing device, and the other end outputs the load for training. At least one set of steel cable switching devices is installed at one end of the load-bearing device. The steel cable includes a load steel cable (6) and an output steel cable (7), and a steel cable switching device is provided at the output end of the load-bearing device; The cable switching device includes an adjustment frame (2), a limiting post (4), a movable pulley frame (5), and a guide rod (8). The adjustment frame (2) is fixedly connected to the frame of the bird training mechanism on the side near the load device. The guide rod (8) is fixedly connected to the adjustment frame (2) in the vertical direction. The movable pulley frame (5) is set along the guide rod (8). The adjustment frame (2) is equipped with a switch. One end of the load cable (6) is connected to the load device, and the other end passes through the upper pulley of the movable pulley frame (5) and is connected to the limiting post (4).

2. The variable force system according to claim 1, characterized in that: The switch can also be set at both ends of the limit post (4).

3. A variable force system according to claim 1, characterized in that: The switch includes a rotating shaft hook assembly (1), and a hook (3) is fixed on the rotating shaft hook assembly (1) that passes through the adjustment frame (2). The hook (3) is set on both sides of the adjustment frame (2).

4. A variable force system according to claim 1, characterized in that: The upper end of the movable pulley frame (5) is provided with a limiting groove, and the limiting column (4) is connected to the limiting groove.

5. A variable force system according to claim 3, characterized in that: The hook (3) is connected to the limit post (4).

6. A variable force system according to claim 1, characterized in that: The movable pulley frame (5) shall be equipped with at least one pulley.

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