Angle adjustable tensioning rod fitness equipment

Abstract

The present application relates to the technical field of fitness equipment, and discloses an angle-adjustable muscle-tightening fitness equipment, which comprises a track frame and a muscle-tightening mechanism movably arranged on the track frame, wherein the muscle-tightening mechanism comprises a moving trolley, a knee pad hingedly connected to the moving trolley and located above the moving trolley, and an angle-adjusting assembly movably connected between the moving trolley and the knee pad; the angle-adjusting assembly is of a telescopic combination structure and is realized in telescopic adjustment and gear fixing by means of a pull rope and a latch. The working posture of the knee pad can be adjusted by the angle-adjusting assembly according to the body condition and the exercise intensity, and the knee pad can be in a horizontal or inclined posture at different angles. No matter which working posture is adopted, the knee pad can slide along the track frame. Different angles of the knee pad result in different flexion and extension angles of the lower leg, and thus different exercise intensities. Of course, the angle-adjustable muscle-tightening fitness equipment can also be used for adjusting the appropriate angle for users of different heights to exercise.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and in particular to an angle-adjustable stretching fitness device. Background Art

[0002] Stretching exercises are a commonly used method to prevent body stiffness and maintain flexibility of muscles and bones. Under the action of stretching force, the amplitude of movement is gradually increased statically or dynamically or the same movement is repeated many times, so that the soft tissue is gradually or continuously stimulated by stretching, achieving the effect of warming up and relaxation.

[0003] The prior art discloses a stretching exercise device, which includes a track frame and a supporting pad that can slide back and forth on the track frame. During exercise, the supporting foot stands on one side of the track frame, and the stretching foot supports the calf on the supporting pad in a kneeling position. Then, the body center of gravity is lowered, the supporting foot knee is extended forward, and the stretching foot pushes the supporting pad to slide backward along the track frame for stretching. This is repeated several times, and the frequency and time of the exercise can be changed as needed to achieve the exercise effect of stretching the thigh muscles of the stretching foot.

[0004] Because the user kneels on the support pad and the support pad needs to slide back and forth, the track frame and support pad of this type of stretching equipment are generally arranged horizontally and not high from the ground. This design can meet the needs of users with general fitness intensity, but it also makes it difficult to meet the needs of some high-intensity fitness exercises, or it cannot allow users to choose and adjust the position of the support pad according to their own physical conditions. Summary of the Invention

[0005] The object of the present invention is to provide an angle-adjustable stretching fitness device, which can quickly and conveniently adjust the working posture of the knee pad according to the user's own physical condition and exercise intensity requirements.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] An angle-adjustable stretching fitness device includes a track frame and a stretching mechanism that is arranged to move back and forth on the track frame. The stretching mechanism includes a moving trolley, a knee pad whose front end is hinged to the moving trolley and located above the moving trolley, and an angle adjustment component that is movably connected between the moving trolley and the knee pad. The angle adjustment component adopts a telescopic combination structure and uses a pull rope and a pin to achieve telescopic adjustment and gear position fixation.

[0008] Preferably, the angle adjustment assembly includes an outer shell, an inner cylinder, an intermediate seat, a pull rope, a pin and a handle, the intermediate seat is fixedly mounted on the bottom of the knee pad, the bottom end of the outer shell is hinged to the mobile trolley and a plurality of gear holes are arranged on its side wall at intervals along its long axis direction, the inner cylinder is movably inserted inside the outer shell and the top end of the inner cylinder extends out of the outer shell and is hinged to the intermediate seat, the handle is hinged to the other side of the intermediate seat away from the inner cylinder and a return member for returning the handle downward is provided at the hinge between the handle and the intermediate seat, the pin is slidably provided on the inner cylinder and movably plugged into the gear hole on the outer shell, a reset member for pointing the pin to the gear hole is provided between the pin and the inner cylinder, the upper end of the pull rope is connected to the handle and the lower end passes through the inner cylinder and is connected to the pin.

[0009] Preferably, the lower end of the pull rope has a second plug-in column, and the connecting end of the latch connected to the pull rope is provided with a second T-shaped plug-in hole adapted to the second plug-in column.

[0010] Preferably, the inner cylinder includes a cylinder body and a guide seat fixedly installed at the bottom of the cylinder body, the pin is slidably set on the guide seat, and a fifth guide portion is provided on the guide seat. The angle between the straight line between the rope outlet position of the fifth guide portion and the connecting end of the pin connected to the pull rope and the sliding direction of the pin is 0°-15°.

[0011] Preferably, the fifth guide portion includes a fifth rolling element mounted on the guide seat via a shaft.

[0012] Preferably, the guide seat is further provided with a third guide portion, the third guide portion is provided with a third guide hole for the pull rope to pass through, and the third guide portion is located at the junction of the guide seat and the cylinder body.

[0013] Preferably, the guide seat is further provided with a fourth guide portion, the fourth guide portion is located between the third guide portion and the fifth guide portion, and the fourth guide portion includes a fourth rolling body installed on the guide seat through a shaft.

[0014] Preferably, a first guide portion is fixedly mounted on one side of the intermediate seat close to the connection between the handle and the pull rope, and the first guide portion includes a first rolling body mounted on the intermediate seat through a shaft.

[0015] Preferably, a second guide portion is provided between the first guide portion and the top end of the inner tube, and a second guide hole for the pull rope to pass through is provided on the second guide portion.

[0016] Preferably, the track frame includes two slide rails, the mobile trolley includes a panel and outer panels and inner panels respectively fixed on the panel and corresponding to both sides of each slide rail, upper rollers are connected between the outer panels and the inner panels respectively located above the slide rails, lower rollers are connected between the outer panels and the inner panels respectively located below the slide rails, and the upper rollers and the lower rollers roll and clamp the slide rails; the front end of the knee pad is hinged to the panel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The stretching fitness device of the present invention includes a movable trolley that moves back and forth on a track frame, a knee pad whose front end is hinged to the movable trolley, and an angle adjustment component that is movably connected between the movable trolley and the knee pad. Users can adjust the working posture of the knee pad by themselves through the angle adjustment component according to their own physical conditions and exercise intensity, either horizontally or at different inclined angles. No matter which working posture is used, it does not hinder the sliding movement of the knee pad along the track frame. Different angles have different flexion and extension angles for the calf, which also brings different exercise intensities. Of course, it can also be suitable for users of different heights to adjust the appropriate angle for exercise.

[0019] In addition, the present invention adopts a telescopic combination structure and uses a pull rope and a pin to achieve telescopic adjustment and gear fixation, including an outer shell, an inner tube, a handle, a pin and a pull rope. The bottom end of the outer shell is hinged on the mobile trolley and the telescopic combination length is adjusted by the extension and contraction of the inner tube. In this way, there is no need to occupy too much space under the mobile trolley, and only the bottom part of the outer shell needs to be exposed, which reduces the phenomenon of collision with the body or other objects on the venue during the back and forth sliding process, and can change the angle and height of the knee pad. Compared with the adjustment method of the inclined support rod with matching slots of different heights, the space is more compact and the exercise is safer. Compared with the adjustment method of the screw-fastened movable sleeve, the adjustment is faster and more convenient, and the experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the horizontal state structure of the angle-adjustable stretching fitness device of the present invention.

[0021] Figure 2 This is a schematic structural diagram of the tensioning mechanism of the present invention on the track frame.

[0022] Figure 3 This is a schematic diagram of the cooperation between the mobile trolley and the track frame of the present invention.

[0023] Figure 4 This is a schematic structural diagram of the angle-adjustable stretching fitness device of the present invention in an inclined state.

[0024] Figure 5 It is a schematic structural diagram of the reinforcement mechanism of the present invention.

[0025] Figure 6This is a structural diagram of the angle adjustment component of the present invention.

[0026] Figure 7 This is a cross-sectional view of the middle seat and handle of the present invention.

[0027] Figure 8 It is a schematic diagram of the inner cylinder structure of the present invention.

[0028] Figure 9 Schematic diagram of the path of the pull rope from the first guide portion to the latch according to the present invention.

[0029] Markings in the figure: 101, moving trolley; 102, knee pad; 103, track frame; 1011, upper roller; 1012, lower roller; 10, outer cover; 11, gear hole; 20, inner cylinder; 21, cylinder body; 22, guide seat; 30, middle seat; 31, first hinge axis; 32, second hinge axis; 33, rubber block; 40, handle; 50, pull rope; 60, pin; 71, first guide part; 72, second guide part; 73, third guide part; 74, third guide part; 75, fifth guide part. DETAILED DESCRIPTION

[0030] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0031] like Figures 1-9 As shown, this embodiment provides an angle-adjustable stretching fitness device, including a track frame 103 and a stretching mechanism arranged on the track frame 103 for movement back and forth. The front end of the track frame 103 is connected to a handrail frame of various forms. During exercise, the user holds the handrail frame with his hands, stands on one side of the track frame 103 with his supporting foot, and kneels on the stretching mechanism with his stretching foot, causing the stretching mechanism to move backward to achieve stretching exercises mainly targeting the rectus femoris and iliopsoas muscles of the thigh.

[0032] In order to further enhance the stretching exercise effect and meet the needs of users with different physical conditions, the stretching mechanism of this embodiment includes a mobile trolley 101, a knee pad 102 whose front end is hinged on the mobile trolley 101 and located above the mobile trolley 101, and an angle adjustment component movably connected between the mobile trolley 101 and the knee pad 102. The angle adjustment component adopts a telescopic combination structure and uses a pull rope 50 and a pin 60 to achieve telescopic adjustment and gear fixation.

[0033] The track frame 103 includes two slide rails, the mobile trolley 101 includes a panel and outer panels and inner panels fixed on the panel and corresponding to the two sides of each slide rail. The front end of the knee pad 102 is hinged on the panel, and a clearance opening for the angle adjustment component is opened on the panel. The upper roller 1011 is connected to the upper part of the slide rail between the outer panel and the inner panel, and the lower roller 1012 is connected to the lower part of the slide rail between the outer panel and the inner panel. The upper roller 1011 and the lower roller 1012 roll and clamp the slide rail. Figure 3 As shown, each slide rail is equipped with two upper rollers 1011 and one lower roller 1012 , and the upper rollers 1011 and the lower rollers 1012 enable the mobile trolley 101 to move smoothly back and forth along the track frame 103 .

[0034] The angle adjustment assembly includes an outer sleeve 10, an inner sleeve 20, an intermediate seat 30, a pull cord 50, a latch 60, and a handle 40. The intermediate seat 30 is fixedly mounted on the bottom of the knee pad 102 and serves as an intermediate component between the inner sleeve 20 and the handle 40, allowing the inner sleeve 20 and the handle 40 to adjust the angle up and down with the knee pad 102. A rubber block 33 is also fixedly mounted on the bottom of the intermediate seat 30. When the knee pad 102 is parallel to the slide rails of the track frame 103, the rubber block 33 abuts against the panel, providing cushioning and protection.

[0035] The bottom end of the outer shell 10 is hinged to the two inner side panels of the mobile cart 101 via a third hinge axis, allowing the outer shell 10 and its associated inner cylinder 20 to adjust vertically around the third hinge axis. Furthermore, since the intermediate seat 30 remains fixed in its mounting position on the knee pad 102, changes in the angle of the outer shell 10 and the telescopic length of the inner cylinder 20 relative to the outer shell 10 require adaptive adjustment of the angle between the inner cylinder 20 and the intermediate seat 30 to prevent interference with movement. Therefore, in this embodiment, the inner cylinder 20 is movably inserted within the outer shell 10, with its top end extending beyond the outer shell 10 and hinged to the intermediate seat 30 via a second hinge axis 32. The intermediate seat 30 is positioned near the rear of the knee pad 102, while the third hinge axis is positioned in the center and forward of the mobile cart 101. In use, the outer shell 10 and its attached inner cylinder 20 are arranged with an upward, tilted, and rearward orientation. The knee pad 102 is supported not only by the hinged connection to the front panel but also by the telescopic sleeve structure formed by the outer shell 10 and inner cylinder 20. An inner sleeve is adapted and embedded between the inner cylinder 20 and the outer cylinder 10 , and the inner sleeve can also reduce the wear between the inner cylinder 20 and the outer cylinder 10 , thereby increasing their service life and enhancing the matching stability between the two.

[0036] The inner cylinder 20 of this embodiment includes a cylinder body 21 and a guide seat 22 fixedly mounted at the bottom of the cylinder body 21. The latch 60 is slidably mounted on the guide seat 22. The sidewall of the outer shell 10 is provided with a plurality of shift holes 11 spaced apart along its longitudinal axis. The line connecting the plurality of shift holes 11 is parallel to the longitudinal axis of the outer shell 10. The latch 60 is positioned on the inner cylinder 20 such that, after the inner cylinder 20 is telescopically adjusted, the latch 60 is aligned with the line connecting the shift holes 11 and inserted into the shift hole 11 at the appropriate position to secure the shift position. The latch 60 is slidably mounted on the guide seat 22 of the inner cylinder 20. A return member (not shown) is provided between the latch 60 and the inner cylinder 20 to direct the latch 60 toward the shift hole 11. The return member is a compression spring. When no tension is applied to the latch 60, the return member forces the latch 60 to move toward the shift hole 11.

[0037] The handle 40 of this embodiment is an operating component used by the user to adjust the angle. Pulling and returning the handle 40 allows the latch 60 to slide into or out of the gear hole 11. This requires establishing a relationship between the handle 40 and the latch 60. This embodiment utilizes a pull cord 50, the upper end of which is connected to the handle 40 and the lower end of which passes through the inner tube 20 and is connected to the latch 60.

[0038] The handle 40 is hinged to the other side of the intermediate base 30 away from the inner cylinder 20 via a first hinge axis 31. A return member (not shown) is provided at the hinged joint between the handle 40 and the intermediate base 30 to return the handle 40 downward. Pulling the handle 40 upward overcomes the return member, causing the handle 40 to rotate upward about the first hinge axis 31. After the force is released, the deformed return member forces the handle 40 to rotate downward and return to its original position. Of course, because the drawstring 50 is connected to the handle 40, pulling the handle 40 upward causes the drawstring 50 connected to the handle 40 to be withdrawn outward, also overcoming the return member.

[0039] There are many ways to connect the pull rope 50 with the pin 60 and the handle 40, which can be specifically as follows: the lower end of the pull rope 50 has a second plug-in column, and the connecting end of the pin 60 connected to the pull rope 50 is provided with a second T-shaped plug-in hole adapted to the second plug-in column; the upper end of the pull rope 50 has a first plug-in column, and the bottom of the handle 40 is provided with a first T-shaped plug-in hole adapted to the first plug-in column.

[0040] Regarding the direction of the pull rope 50 from the handle 40 to the latch 60, since the pull rope 50 mostly moves up and down in the barrel body 21, while the sliding direction of the latch 60 is vertical, if the pull rope 50 is pulled directly, there will inevitably be greater resistance. For this reason, this embodiment designs some guide components on the guide seat 22 to allow the pull rope 50 to flexibly turn and reduce the pulling force, because the pull rope 50 is soft and can turn arbitrarily. The most important one is to set a fifth guide part 75 at a position close to the latch 60. The fifth guide part 75 includes a fifth rolling body installed on the guide seat 22 through an axis. The angle between the straight line from the rope outlet position of the fifth rolling body to the connection end of the latch 60 and the sliding direction of the latch 60 is 0°-15°, and the optimal angle is 0° in the same straight line direction.

[0041] Furthermore, the guide base 22 is provided with a third guide portion 73 and a fourth guide portion 74. These third and fourth guide portions 73 and 74 are auxiliary guide portions and are not essential, but they do provide a labor-saving effect on the direction of the pull cord 50. Specifically, the third guide portion 73 is provided with a third guide hole for the pull cord 50 to pass through. The third guide portion 73 is located at the junction of the guide base 22 and the cylinder body 21. The fourth guide portion 74 is located between the third guide portion 73 and the fifth guide portion 75. The fourth guide portion 74 includes a fourth rolling element mounted on the guide base 22 via a shaft. Thus, the pull cord 50, which passes downward from the third guide hole, passes through the fourth and fifth rolling elements in sequence and then connects to the latch 60.

[0042] Furthermore, in order to allow the pull rope 50 to smoothly enter the inner tube 20 from the handle 40, a first guide portion 71 is fixedly installed on one side of the intermediate seat 30 near the connection between the handle 40 and the pull rope 50. The first guide portion 71 includes a first rolling body installed on the intermediate seat 30 through an axis. A second guide portion 72 is also provided between the first guide portion 71 and the top of the inner tube 20. A second guide hole is provided on the second guide portion 72 for the pull rope 50 to pass through. The pull rope 50 coming out of the handle 40 first goes out of the first rolling body and then enters the second guide hole, and then enters the inner tube 20. The upper and lower ends of the tube body 21 are provided with chambers for the pull rope 50 to pass through.

[0043] The first, fourth, and fifth rolling elements can be rubber or steel wheels, mounted on a shaft. To reduce resistance, ball bearings can be embedded between the first, fourth, and fifth rolling elements and the shaft. The outer contours of the first, fourth, and fifth rolling elements are preferably trapezoidal cylinders that slope downward from both ends toward the center, with an annular rope groove formed in the center. This allows the pull rope 50 to be guided into the center rope groove.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An angle-adjustable stretching fitness machine, comprising a track frame and a stretching mechanism arranged to move forward and backward on the track frame, characterized in that: The tensioning mechanism includes a moving trolley, a knee pad whose front end is hinged to the moving trolley and located above the moving trolley, and an angle adjustment component movably connected between the moving trolley and the knee pad. The angle adjustment component adopts a telescopic combination structure and uses a pull rope and a latch to achieve telescopic adjustment and gear position fixation. The angle adjustment assembly includes an outer shell, an inner cylinder, an intermediate seat, a pull rope, a latch and a handle. The intermediate seat is fixedly mounted on the bottom of the knee pad. The bottom end of the outer shell is hinged to the mobile trolley and a plurality of gear holes are arranged on its side wall at intervals along its long axis. The inner cylinder is movably inserted into the inner shell and the top end of the inner cylinder extends out of the outer shell and is hinged to the intermediate seat. The handle is hinged to the other side of the intermediate seat away from the inner cylinder and a return member for returning the handle downward is provided at the hinge between the handle and the intermediate seat. The latch is slidably arranged on the inner cylinder and movably plugged into the gear hole on the outer shell. A reset member for pointing the latch to the gear hole is provided between the latch and the inner cylinder. The upper end of the pull rope is connected to the handle and the lower end passes through the inner cylinder and is connected to the latch.

2. The angle-adjustable stretching fitness device according to claim 1, characterized in that: The lower end of the pull rope is provided with a second plug-in column, and the connecting end of the latch connected to the pull rope is provided with a second T-shaped plug-in hole adapted to the second plug-in column.

3. The angle-adjustable stretching fitness device according to claim 1, characterized in that: The inner cylinder includes a cylinder body and a guide seat fixedly installed at the bottom of the cylinder body. The pin is slidably arranged on the guide seat. A fifth guide portion is provided on the guide seat. The angle between the straight line between the rope outlet position of the fifth guide portion and the connecting end of the pin connected to the pull rope and the sliding direction of the pin is 0°-15°.

4. The angle-adjustable stretching fitness device according to claim 3, characterized in that: The fifth guide portion includes a fifth rolling element installed on the guide seat through a shaft.

5. The angle-adjustable stretching fitness device according to claim 4, characterized in that: The guide seat is further provided with a third guide portion, the third guide portion is provided with a third guide hole for the pull rope to pass through, and the third guide portion is located at the junction of the guide seat and the cylinder body.

6. The angle-adjustable stretching fitness device according to claim 5, characterized in that: The guide seat is further provided with a fourth guide portion, which is located between the third guide portion and the fifth guide portion. The fourth guide portion includes a fourth rolling body installed on the guide seat through a shaft.

7. The angle-adjustable stretching fitness device according to claim 1, characterized in that: A first guide portion is fixedly mounted on one side of the intermediate seat close to the connection between the handle and the pull rope. The first guide portion includes a first rolling body mounted on the intermediate seat via a shaft.

8. The angle-adjustable stretching fitness device according to claim 7, characterized in that: A second guide portion is further provided between the first guide portion and the top end of the inner tube, and a second guide hole for the pull rope to pass through is opened on the second guide portion.

9. The angle-adjustable stretching fitness device according to claim 1, characterized in that: The track frame includes two slide rails, and the mobile trolley includes a panel and an outer plate and an inner plate respectively fixed on the panel and corresponding to both sides of each slide rail. The parts of the outer plate and the inner plate located above the slide rails are connected to upper rollers, and the parts of the outer plate and the inner plate located below the slide rails are connected to lower rollers. The upper rollers and the lower rollers are both between the outer plate and the inner plate, and the upper rollers and the lower rollers roll and clamp the slide rails; the front end of the knee pad is hinged on the panel.

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