An autonomous split-stance leg-crossing muscle exerciser

Abstract

The application discloses an independent split type leg cross part muscle exerciser, which is designed for split exercise in a natural standing state of a person. The whole split exerciser is composed of two parts, namely, a split movement assembly and a manual control assembly. The split movement assembly utilizes two sets of ball screw systems with the same screw direction and the same pitch, and drives left and right sliding plates to approach or move away from each other at the same speed under the outer meshing action of two gears, so as to realize the split action. During the split process, the area between the two foot pedals is completely covered by the left and right sliding plates, forming a plane. Since the split and closed split movements can be completely overcome by the muscle strength of the legs to overcome the gravity, the purpose of independently exercising the leg cross part muscles is realized. The manual control assembly is mainly designed for providing auxiliary split action when the leg strength is insufficient, and the height of the manual control rod is basically unchanged relative to the exerciser. The split or closed split can be assisted by lifting or pressing the manual control rod. The length of the connecting rod can be adjusted to control the size of the split range.

Description

Technical Field

[0001] This invention is mainly used in the field of sports and fitness. Compared with existing splits assistive devices, the exercise device designed in this invention focuses on relying on the strength of the exerciser's own leg and hip muscles to overcome their own gravity to perform opening and closing movements, rather than passively stretching and splitting. Background Technology

[0002] With the improvement of living standards, people are spending more and more on sports and fitness, which has directly promoted the development of the fitness equipment industry. The legs and hips are a sensitive area that directly affects the function of many organs in the lower abdomen. However, due to lifestyle habits, most people neglect leg and hip exercises. The condition of the legs and hips is best during childhood, which is why splits-assistance devices have emerged. Splits-assistance devices are effective equipment for stretching the tendons and muscles of the legs and hips, and also play an important role in regulating blood circulation in the legs and hips and improving the function of lower abdominal organs. However, research has found that when using existing splits-assistance devices for splits exercises, it is basically a passive process. Generally, the exerciser sits on the device and then stretches their legs with the aid of the device. This is usually safe and has a good effect on stretching the tendons, but because it lacks active muscle contraction, the effect on strengthening the leg and hip muscles is usually poor. Therefore, it is necessary to develop a splits-assistance device that can simultaneously provide good results in stretching tendons and muscles and strengthening muscles. Summary of the Invention

[0003] The self-controlled splits leg and hip muscle exerciser consists of two main parts: a splits movement component (1, 2, 3, 4, 9, 10, 11, 12, 13 in the figure) and a manual control component (2, 5, 6, 7, 8 in the figure). The two parts are mutually constrained and coordinated through a common component 2.

[0004] The splits motion assembly consists of a main base (Figure 13), a left ball screw (Figure 9), a left gear (Figure 10), a right ball screw (Figure 11), a right gear (Figure 12), a left slide (Figure 2), a left foot pedal (Figure 1), a right slide (Figure 3), and a right foot pedal (Figure 4). The two ball screws have the same helical direction and pitch, and are connected to the two slides via screw nuts to form a helical pair. Due to the meshing of the two external gears, the two ball screws are always in opposite directions, ensuring that the left and right slides can only move towards or away from each other simultaneously, thus achieving the splits effect. The base has rails that cooperate with the slide rails on the two slides, bearing all the weight load and providing guidance. To save space and materials and for safety reasons, the outer side of the guide rails on both sides of the slides is longer than the inner side, and they are located at the foot pedal positions at the ends of the slides. The nuts are also fixed to the ends of the slides, ensuring that the area between the two foot pedals is a planar area (e.g., ...) when the splits are in any position.Figure 2 As shown in the image, even when the splits are at their maximum extent, the skateboard will not extend beyond the base. The skateboard is equipped with footrests with open holes. The footrests have corresponding incomplete cylindrical structures that can engage with the open holes to allow for a certain degree of angular rotation, providing a comfortable range of foot adjustment even when the splits are wide.

[0005] The manual control assembly consists of a left sliding plate (Figure 2), a manual control assembly base (Figure 5), a connecting rod (Figure 6), a manual control lever (Figure 7), and a slider (Figure 8). The manual control assembly base is installed in the middle of the side of the main base and has a track on it, allowing the slider to slide up and down. The slider is connected to the left sliding plate via a connecting rod, and the manual control lever is fixedly connected to the slider. The sliding stroke of the slider should be equal to or similar to the sliding stroke of both sliding plates. This ensures that the height of the manual control lever remains relatively constant relative to the exerciser, allowing the exerciser to assist in controlling the degree of the splits using the manual control lever when leg strength is insufficient. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the invention before the splits; the positional relationship between the left and right slides can be seen before the splits.

[0007] Figure 2 This is a schematic diagram showing the positional relationship between the left and right slides and connecting rods when the split is in any position.

[0008] Figure 3 This is a schematic diagram of the ball screw drive arrangement on the main base, which also shows the track setup on the main base.

[0009] Figure 4 This is a schematic diagram of a skateboard structure.

[0010] Figure 5 This is a schematic diagram of the foot pedal structure.

[0011] The labels in the diagram have been explained in the previous section. Detailed Implementation

[0012] This invention is primarily designed for splits training in a natural standing position. It's like having two pulleys under your feet, forcing your legs to resist the pressure of your body weight during the splits, thus actively exercising your leg and hip muscles. The exercise device mainly consists of two parts: a splits movement component and a manual control component. These two parts are mutually constrained and coordinated through a common component, the left sliding plate. The splits movement component comprises a base, a left ball screw, a left gear, a right ball screw, a right gear, a left sliding plate, a left foot pedal, a right sliding plate, and a right foot pedal. The base has rails that cooperate with the rails on the two sliding plates, bearing all the weight load and providing guidance. The two ball screws, with the same helical direction and pitch, rotate in different directions under the action of two external meshing gears. This drives the nuts fitted on the two ball screws and the left and right sliding plates fixed to the nuts to move simultaneously closer or further apart on the base guide rails, achieving the splits and closed splits functions. The skateboard features two guide rails, with the outer rails longer than the inner rails, located at the footrest positions on both sides. Nuts are also secured to the ends of the skateboard. This design ensures that the area between the footrests remains flat regardless of the split position, and the skateboard will not extend beyond the base even at its maximum split extent. The skateboard is equipped with footrest mounting platforms with partially sealed holes. The footrests have corresponding partially cylindrical structures that engage with these holes, allowing for a degree of angular rotation and providing comfortable foot adjustment even with a wide split range. The manual control assembly consists of the left skateboard, a base, a connecting rod, a manual control lever, and a slider. The base is mounted in the center of the side of the main base and features a track on which the slider can slide up and down. The slider is connected to the left skateboard via a connecting rod, and the manual control lever is fixedly connected to the slider. The slider's travel distance must be equal to or similar to the travel distance of both skateboards. This ensures that the height of the manual control lever remains relatively constant for the user, allowing them to compensate for insufficient leg strength by pressing down or pulling up the lever. The left and right skateboards are supported by double guide rails at the foot pedals and by a single guide rail at the non-foot pedals. The side with the longer guide rail is higher than the side with the shorter guide rail. This ensures that the foot pedals can bear the weight and that the space between the feet is completely covered when doing a split, thus enhancing safety.

[0013] When using this product for exercise, first stand with both feet on the footrests and hold the manual control levers with both hands. Lifting the manual control levers will close the left and right slides, while pressing them down will separate them, allowing you to perform a split. The manual control levers not only assist in the split but also serve as safety handrails. Generally, the manual control levers are only used to assist in the split when leg strength is insufficient; otherwise, they can be used as safety handrails. The length of the connecting rods is adjustable. Beginners can choose a shorter connecting rod to reduce the range of motion in the split and avoid discomfort. Gradually increase the length of the connecting rods as you progress until you can successfully perform a full split.

Claims

1. An autonomous split-body leg and hip muscle exercise device, designed based on the principle of actively performing splits to exercise leg and hip muscles and stretch fascia in a natural standing position, characterized by: The exercise machine mainly consists of two parts: a splits movement component and a manual control component. These two parts are mutually constrained and coordinated through a common component, the left sliding plate. The splits movement component comprises a base, a left ball screw, a left gear, a right ball screw, a right gear, a left sliding plate, a left foot pedal, a right sliding plate, and a right foot pedal. The left gear is mounted on the left ball screw, and the right gear is mounted on the right ball screw. The left and right gears mesh externally. The base has four tracks: two inner tracks closer to the center are shorter, while two outer tracks further from the center are longer. The left and right sliding plates each have two tracks that cooperate with the tracks on the base, bearing all the weight load and providing guidance. The two ball screws have the same helical direction and pitch, rotating in different directions under the action of the two externally meshing gears, thereby driving the gears mounted on the two ball screws... The nut and the left and right slides fixed to the nut move simultaneously toward or away from each other on the base track. The two tracks on the slide are of different lengths. The track that matches the shorter track on the base is shorter and is located at the foot pedal position at the end of the slide. The nut is also fixed to the end of the slide. The slide is equipped with a foot pedal mounting platform with an open hole. The foot pedal has a corresponding incomplete cylindrical structure that can match the open hole to achieve a certain degree of angular rotation. The manual control component consists of the left slide, the manual control component base, the connecting rod, the manual control lever, and the slider. The manual control component base is installed in the middle of the side of the main base and has a track on it. The slider can slide up and down on the track. The slider is connected to the left slide through the connecting rod. The manual control lever is fixedly connected to the slider. The sliding stroke of the slider should be equal to or close to the sliding stroke of the two slides.

2. The self-contained splits-style leg and hip muscle exerciser as described in claim 1, characterized in that: The manual control component and the splits movement component are linked, mutually restrictive, and mutually supportive. The range of the splits can be controlled by adjusting the length of the connecting rod, while the height of the manual control rod remains relatively constant relative to the exerciser.

3. The self-contained splits-style leg and hip muscle exerciser as described in claim 1, characterized in that: The left and right skateboards are supported by double rails at the foot pedals and by a single rail at the non-foot pedals, with the longer rail side being higher than the shorter rail side.

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