Angle-adjustable stretching body builder

Abstract

The invention relates to the technical field of fitness equipment, and particularly discloses an angle-adjustable stretching fitness device which comprises a track frame and a stretching mechanism arranged on the track frame in a front-back moving mode. The front end of the knee bolster is hinged to the movable trolley, the knee bolster is located above the movable trolley, the angle adjusting assembly is movably connected between the movable trolley and the knee bolster, and the angle adjusting assembly is of a telescopic combined structure and achieves telescopic adjustment and gear fixing through a pull rope and a plug pin. Working postures or different horizontal or inclined angles of the knee bolster can be automatically adjusted through the angle adjusting assembly according to self body conditions and exercise intensity, the knee bolster is not hindered from sliding back and forth along the track frame in any working posture, and bending and stretching angles of shanks are different at different angles. Certainly, the fitness equipment can also be suitable for users of different heights to adjust the appropriate angle for exercise.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, and in particular to an angle-adjustable muscle-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 multiple times, so that the soft tissue is gradually or continuously stimulated by being stretched, achieving the effect of warming up and relaxation.

[0003] The prior art discloses a stretching exercise equipment, which includes a track frame and a bearing 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 bearing pad in a kneeling position. Then, the body center of gravity is lowered, the supporting knee is extended forward, and the stretching foot pushes the bearing 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 load-bearing pad and the load-bearing pad needs to slide back and forth, the track frame and load-bearing 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 load-bearing 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: An angle-adjustable stretching fitness device comprises a track frame and a stretching mechanism arranged on the track frame for forward and backward movement, the stretching mechanism comprises a moving trolley, a knee pad whose front end is hinged on 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 fixing.

[0007] Preferably, the angle adjustment assembly comprises an outer sleeve, an inner sleeve, 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 sleeve is hinged on the moving trolley and a plurality of gear holes are arranged on its side wall at intervals along its long axis direction; the inner sleeve is movably inserted in the inner sleeve and the top end of the inner sleeve extends out of the outer sleeve and is hinged on the intermediate seat; the handle is hinged on the other side of the intermediate seat away from the inner sleeve 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 sleeve and movably plugged with the gear hole on the outer sleeve; a reset member for pointing the latch to the gear hole is provided between the latch and the inner sleeve; the upper end of the pull rope is connected to the handle and the lower end passes through the inner sleeve and is connected to the latch.

[0008] 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.

[0009] Preferably, the inner cylinder includes a cylinder body and a guide seat fixedly installed at the bottom of the cylinder body, the latch is slidably arranged on the guide seat, a fifth guide portion is provided on the guide seat, and the angle between the straight line between the rope outlet position of the fifth guide portion and the connecting end of the latch connected to the pull rope and the sliding direction of the latch is 0°-15°.

[0010] Preferably, the fifth guide portion comprises a fifth rolling body mounted on the guide seat via a shaft.

[0011] 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.

[0012] Preferably, a fourth guide portion is further provided on the guide seat, and 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.

[0013] 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.

[0014] Preferably, 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 formed on the second guide portion.

[0015] Preferably, the track frame includes two slide rails, the mobile trolley includes a panel and outer plates and inner plates respectively fixed on the panel and corresponding to both sides of each slide rail, upper rollers are connected between the outer plates and the inner plates respectively located above the slide rails, lower rollers are connected between the outer plates and the inner plates 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 on the panel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The stretching fitness device of the present invention comprises a moving trolley which moves forward and backward on a track frame, a knee pad whose front end is hinged on the moving trolley, and an angle adjustment component which is movably connected between the moving trolley and the knee pad. The user can adjust the working posture of the knee pad by himself or herself through the angle adjustment component according to his or her own physical condition and exercise intensity, either horizontally or at different inclined angles. No matter which working posture is used, the knee pad will not be hindered from sliding forward and backward along the track frame. Different angles have different flexion and extension angles for the calf, thus bringing different exercise intensities. Of course, it can also be suitable for users of different heights to adjust the appropriate angle for exercise.

[0017] In addition, the present invention adopts a telescopic combination structure and uses a pull rope and a pin to achieve telescopic adjustment and gear fixing, including an outer shell, an inner tube, a handle, a pin and a pull rope, etc. The bottom end of the outer shell is hinged on the moving trolley and the telescopic combination length can be adjusted by the extension and contraction of the inner tube. In this way, there is no need to occupy too much space under the moving trolley, and only the bottom part of the outer shell needs to be exposed, thereby reducing the phenomenon of collision with the body or other objects on the venue during the back and forth reciprocating sliding process, and the angle and height of the knee pad can be changed. 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 fastening the movable sleeve with screws, the adjustment is faster and more convenient, and the experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the horizontal state structure of the angle-adjustable stretching fitness device of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the tensioning mechanism of the present invention on the track frame.

[0020] Figure 3 It is a schematic diagram of the cooperation between the mobile trolley and the track frame of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the angle-adjustable stretching fitness device of the present invention in an inclined state.

[0022] Figure 5 It is a schematic diagram of the structure of the reinforcement mechanism of the present invention.

[0023] Figure 6It is a schematic diagram of the structure of the angle adjustment component of the present invention.

[0024] Figure 7 It is a cross-sectional view of the middle seat and the handle of the present invention.

[0025] Figure 8 It is a schematic diagram of the inner cylinder structure of the present invention.

[0026] Fig. 9 It is a schematic diagram of the direction of the pull rope from the first guide portion to the latch pin of the present invention.

[0027] 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

[0028] 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 as follows.

[0029] like Figure 1-Figure 9 As shown, this embodiment provides an angle-adjustable stretching fitness equipment, including a track frame 103 and a stretching mechanism arranged on the track frame 103 to move forward and backward. The front end of the track frame 103 is connected to a handrail frame which can be in 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, so that the stretching mechanism moves backward to achieve stretching exercise with the rectus femoris and iliopsoas muscles of the thigh as the main targets.

[0030] 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 cart 101, a knee pad 102 whose front end is hinged on the mobile cart 101 and located above the mobile cart 101, and an angle adjustment component that is movably connected between the mobile cart 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 position fixing.

[0031] Wherein: the track frame 103 includes two slide rails, the mobile trolley 101 includes a panel and outer panels and inner panels respectively 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 to move is opened on the panel, and the upper rollers 1011 are connected to the upper part of the slide rails between the outer panels and the inner panels, and the lower rollers 1012 are connected to the lower part of the slide rails between the outer panels and the inner panels, and the upper rollers 1011 and the lower rollers 1012 roll and clamp the slide rails. 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 moving vehicle 101 to move smoothly forward and backward along the track frame 103 .

[0032] The angle adjustment assembly includes an outer sleeve 10, an inner sleeve 20, an intermediate seat 30, a pull rope 50, a latch 60 and a handle 40. The intermediate seat 30 is fixedly mounted at the bottom of the knee pad 102 and serves as an intermediate component between the inner sleeve 20 and the handle 40, so that the inner sleeve 20 and the handle 40 can follow the knee pad 102 to adjust the angle up and down. A rubber block 33 is also fixedly mounted at the bottom of the intermediate seat 30. When the knee pad 102 is parallel to the slide rail of the track frame 103, the rubber block 33 abuts against the panel and has a buffering and protective effect.

[0033] The bottom end of the outer sleeve 10 is hinged to the two inner side panels of the mobile trolley 101 through the third hinge axis, so that the outer sleeve 10 and the inner sleeve 20 matched therewith can adjust the angle up and down around the third hinge axis. In addition, since the installation position of the middle seat 30 on the knee pad 102 remains unchanged, when the angle of the outer sleeve 10 changes and the telescopic length of the inner sleeve 20 relative to the outer sleeve 10 changes, the angle between the inner sleeve 20 and the middle seat 30 should also change adaptively, otherwise it will cause motion interference. Therefore, the inner sleeve 20 of this embodiment is movably inserted inside the outer sleeve 10, and the top end of the inner sleeve 20 extends out of the outer sleeve 10 and is hinged to the middle seat 30 through the second hinge axis 32. The middle seat 30 is arranged near the rear side of the knee pad 102, and the third hinge axis is arranged in the middle and front position of the mobile trolley 101. In the application state, the outer sleeve 10 and the inner sleeve 20 thereon are arranged backwardly from bottom to top. In addition to the hinged part connected to the panel at the front end, the support point of the knee pad 102 is also supported by the telescopic sleeve structure composed of the outer sleeve 10 and the inner sleeve 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 , increase the service life and enhance the matching stability between the two.

[0034] The inner cylinder 20 of this embodiment includes a cylinder body 21 and a guide seat 22 fixedly installed at the bottom of the cylinder body 21, the latch 60 is slidably arranged on the guide seat 22, the side wall of the outer sleeve 10 is arranged with a plurality of gear holes 11 at intervals along its long axis direction, the connecting line of the plurality of gear holes 11 is parallel to the long axis direction of the outer sleeve 10, and the setting position of the latch 60 on the inner cylinder 20 should meet the connecting line of the latch 60 pointing to the gear hole 11 after the inner cylinder 20 is telescopically adjusted and inserted into the gear hole 11 at an appropriate position to complete the gear fixation. The latch 60 is slidably arranged on the guide seat 22 of the inner cylinder 20, and a reset member (not shown in the figure) for making the latch 60 point to the gear hole 11 is provided between the latch 60 and the inner cylinder 20, the reset member adopts a compression spring, and when there is no tension acting on the latch 60, the latch 60 has a movement tendency to point to the gear hole 11 through the reset member.

[0035] The handle 40 of this embodiment is an operating component for the user to adjust the angle, and the lifting and returning of the handle 40 is to allow the latch 60 to slide and insert or disengage from the gear hole 11, and a relationship needs to be established between the handle 40 and the latch 60. This embodiment uses a pull rope 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.

[0036] The handle 40 is hinged to the other side of the middle seat 30 away from the inner cylinder 20 through the first hinge axis 31, and a return member (not shown in the figure) is provided at the hinge between the handle 40 and the middle seat 30 to return the handle 40 downward. When the handle 40 is pulled upward, the return member is overcome so that the handle 40 rotates upward around the first hinge axis 31. After the force is removed, the return force of the deformed return member forces the handle 40 to rotate downward around the first hinge axis 31. Of course, because the drawstring 50 is connected to the handle 40, when the handle 40 is pulled upward, the drawstring 50 connected to the handle 40 is pulled out, and the return member must also be overcome at this time.

[0037] There are many ways to connect the pull rope 50, 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 compatible with 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 compatible with the first plug-in column.

[0038] 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 a large resistance. For this reason, this embodiment designs some guide components on the guide seat 22 to make the pull rope 50 turn flexibly 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 connecting 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. Further, the guide seat 22 is provided with a third guide portion 73 and a fourth guide portion 74, which are auxiliary directions and are not indispensable but have a labor-saving effect on the direction of the pull rope 50. Specifically: the third guide portion 73 is provided with a third guide hole for the pull rope 50 to pass through, the third guide portion 73 is located at the junction of the guide seat 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, and the fourth guide portion 74 includes a fourth rolling body installed on the guide seat 22 through a shaft, so that the pull rope 50 going down from the third guide hole is connected to the latch 60 after passing through the fourth rolling body and the fifth rolling body in sequence.

[0039] 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 that comes 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.

[0040] The first rolling body, the fourth rolling body and the fifth rolling body can be rubber wheels or steel wheels, which are installed through the shaft. In order to reduce resistance, ball bearings can be further embedded between the first rolling body, the fourth rolling body and the fifth rolling body and the shaft. The outer contour of the first rolling body, the fourth rolling body and the fifth rolling body is preferably a trapezoidal cylinder that is inclined downward from both ends to the middle and forms a rope-passing annular groove at the middle position, so that the pull rope 50 will be guided to the rope-passing annular groove position in the middle.

[0041] 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 illustrating 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 shall be 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 on the track frame to move forward and backward, characterized in that: The tensioning mechanism includes a moving trolley, a knee pad whose front end is hinged on 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 pin to achieve telescopic adjustment and gear position fixing.

2. The angle-adjustable stretching fitness device according to claim 1, characterized in that: The angle adjustment assembly includes an outer sleeve, an inner sleeve, 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 sleeve is hinged on the moving trolley and a plurality of gear holes are arranged on its side wall at intervals along its long axis direction. The inner sleeve is movably inserted in the inner sleeve and the top end of the inner sleeve extends out of the outer sleeve and is hinged on the intermediate seat. The handle is hinged on the other side of the intermediate seat away from the inner sleeve 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 sleeve and movably plugged into the gear hole on the outer sleeve. A reset member for pointing the latch to the gear hole is provided between the latch and the inner sleeve. The upper end of the pull rope is connected to the handle and the lower end passes through the inner sleeve and is connected to the latch.

3. The angle-adjustable stretching fitness device according to claim 2, 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 with the pull rope is provided with a second T-shaped plug-in hole matched with the second plug-in column.

4. The angle-adjustable stretching fitness device according to claim 2, characterized in that: The inner cylinder includes a cylinder body and a guide seat fixedly installed at the bottom of the cylinder body, the latch is slidably arranged on the guide seat, a fifth guide portion is provided on the guide seat, and an angle between a straight line between a rope outlet position of the fifth guide portion and a connecting end of the latch connected to the pull rope and a sliding direction of the latch is 0°-15°.

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

6. The angle-adjustable stretching fitness device according to claim 5, characterized in that: The guide seat is also provided with a third guide portion, and 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.

7. The angle-adjustable stretching fitness device according to claim 6, characterized in that: The guide seat is also 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.

8. The angle-adjustable stretching fitness device according to claim 2, 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, and the first guide portion includes a first rolling body mounted on the intermediate seat through a shaft.

9. The angle-adjustable stretching fitness device according to claim 8, characterized in that: A second guide portion is also 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.

10. The angle-adjustable stretching fitness device according to claim 1, characterized in that: The track frame includes two slide rails, the mobile trolley includes a panel and outer plates and inner plates respectively fixed on the panel and corresponding to both sides of each slide rail, upper rollers are connected between the outer plates and the inner plates respectively located above the slide rails, lower rollers are connected between the outer plates and the inner plates 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 on the panel.

Images