Air resistance type leg bending training device

Abstract

The utility model discloses an air resistance type leg bending training device which comprises a main frame, a leg bending training assembly, an air resistance assembly and a controller, the main frame comprises two frame beams and a plurality of connecting beams, a handle is arranged at the bottom of one end of the main frame, a base plate assembly is fixedly installed at the top of the main frame, and the leg bending training assembly comprises two training arms. The two training arms are rotatably installed at the top of the main frame, the bottoms of the two training arms are each provided with a first supporting frame, the air resistance assembly comprises two air cylinders, two air tanks and an air pressure adjusting assembly, the end portions of cylinder bodies of the two air cylinders are rotatably connected with the top of the main frame, and two second supporting frames are rotatably installed on the bottom face of the main frame; the two second supporting frames are rotationally connected with the telescopic ends of the two air cylinders correspondingly, and the bottoms of the two second supporting frames are connected with the two first supporting frames through two belts correspondingly. The resistance during training can be adjusted, the load during training is stable, the knees of a body builder can be protected, the structure is simple, and installation and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to an air resistance leg bending training device. Background Technology

[0002] In recent years, with the improvement of living standards, people's health awareness has also increased, and many people exercise in the morning and evening. Although there are many fitness equipment available, there are relatively few for leg exercises. The leg curl trainer is a fixed device that mainly targets the hamstring muscles on the back of the thigh. It can specifically train the muscle group on the back of the leg. During the exercise, the thigh and above should be pressed firmly against the support pad, both hands should hold the handles, the knee joint should be exposed above the support pad, the knee should be slightly bent, and the buttocks should not be raised as much as possible to prevent the force from shifting. During the exercise, exhale and lift the leg upwards at a steady speed, and inhale and slowly lower it back to the starting position.

[0003] Existing leg curl trainers achieve load through barbell plates or weight plates. Due to inertia, the loaded weight plates will accelerate during the descent, causing changes in resistance during the swing of the training equipment that are uncontrollable. This can put a significant impact on the exerciser's knees and easily cause injury. Utility Model Content

[0004] The purpose of this invention is to provide an air resistance leg bending training device, which makes it convenient for fitness enthusiasts to complete leg bending training. The resistance can be adjusted according to needs, the load during training is stable, and it can protect the knees of fitness enthusiasts. Its structure is simple and easy to install and maintain.

[0005] To achieve the above and other related objectives, this utility model provides an air resistance leg-bending training device, comprising: a main frame, a leg-bending training component, an air resistance component, and a controller. The main frame includes two frame beams and several connecting beams, with both ends of the connecting beams fixedly connected to the two frame beams. A base plate is fixedly installed at the bottom of each end of the two frame beams. A handle is provided at the bottom of one end of the main frame, and a pad assembly is fixedly installed at the top of the main frame. The leg-bending training component includes two training arms, which are rotatably mounted on the top of the main frame at the end away from the handle. A first support frame is provided at the bottom of each of the two training arms. The air resistance component includes two cylinders, two air tanks, and an air pressure regulating component. The air pressure regulating component is respectively controlled by... The pipeline is connected to the two cylinders, the two air tanks, and the air supply device. An air tank box is provided on the main frame, and the two air tanks are installed inside the air tank box. The air pressure regulating component is installed on the main frame. The cylinder ends of the two cylinders are rotatably connected to the bottom surface of the main frame facing the top of the leg-bending training component. Two second support frames are rotatably installed on the bottom surface of the main frame away from the top of the leg-bending training component. The middle portions of the two second support frames facing the cylinders are rotatably connected to the telescopic ends of the two cylinders, respectively. The bottoms of the two second support frames are respectively connected to the two first support frames via two belts. The controller is installed on the base plate away from the leg-bending training component, and the controller is electrically connected to the air pressure regulating component.

[0006] In one example of the air resistance leg bending training device of this utility model, the frame beam includes a first upright, a second upright, a first crossbar, and a second crossbar. The top end of the first upright is fixedly connected to one end of the first crossbar through a first bend. The other end of the first crossbar is fixedly connected to one end of the second crossbar through a second bend. The other end of the second crossbar is fixedly connected to the top end of the second upright. The bottom ends of the first upright and the second upright are respectively fixedly connected to the two base plates.

[0007] In one example of the air resistance leg bending training device of this utility model, the plurality of connecting beams include a first connecting beam, a second connecting beam, a third connecting beam and a fourth connecting beam. The two ends of the first connecting beam are respectively fixedly connected to the two first crossbars. The two ends of the second connecting beam are respectively fixedly connected to the two second crossbars facing the first crossbars. The two ends of the third connecting beam are respectively fixedly connected to the two second crossbars facing the second uprights. The two ends of the fourth connecting beam are respectively fixedly connected to the top ends of the two second uprights.

[0008] In one example of the air resistance leg bending training device of this utility model, the pad assembly includes a first pad and a second pad. The first pad is fixedly installed on the top of the two first crossbars, the second pad is fixedly installed on the top of the two second crossbars, and the handle is installed on the outside of the bottom of the two first uprights.

[0009] In one example of the air resistance leg bending training device of this utility model, a first mounting frame is provided on the third connecting beam, and two training arms are respectively rotatably mounted on the first mounting frame. Each of the two training arms is provided with a mounting rod at the end away from the first mounting frame. A soft pad is fitted on each mounting rod, and an end plate is provided at each end of the soft pad. One end plate is fixedly connected to the end of the mounting rod by bolts.

[0010] In one example of the air resistance leg bending training device of this utility model, the side of the first support frame facing the fourth connecting beam is an arc-shaped plate, one end of the belt is fixedly connected to the arc-shaped plate, and the belt cooperates with the outer wall of the arc-shaped plate.

[0011] In one example of the air resistance leg bending training device of this utility model, two guide wheels are rotatably mounted on the top of the fourth connecting beam. The two guide wheels are respectively engaged with the two belts, and the outer walls of the two guide wheels are respectively engaged with the arc-shaped plates on the two first support frames.

[0012] In one example of the pneumatic leg-bending training device of this utility model, a second mounting bracket is provided on the side of the third connecting beam away from the training arm, and the cylinder ends of the two cylinders are respectively rotatably connected to the second mounting bracket.

[0013] In one example of the pneumatic leg-bending training device of this utility model, the second support frame is a triangular plate, the bottom of the first connecting beam is provided with a third mounting frame, the top ends of the two second support frames are respectively rotatably connected to the third mounting frame, the bottom end of the second support frame is provided with a belt connecting pipe for connecting the belt, and the telescopic ends of the two cylinders are respectively rotatably connected to the third ends of the two second support frames.

[0014] In one example of the air resistance leg bending training device of this utility model, a fourth mounting bracket is provided on the base plate located below the handle, the controller is fixedly mounted on the fourth mounting bracket, and the controller is provided with a touch screen.

[0015] In one example of the air resistance leg bending training device of this utility model, rubber pads are provided at the bottom of both base plates.

[0016] This utility model relates to a pneumatic resistance leg-bending training device. The main frame is placed on the ground or a base surface via two base plates. During training, the user lies prone on the pad assembly at the top of the main frame, head facing the controller, hands gripping the handles, and legs positioned on the leg-bending training assembly. The user uses their legs to drive the training arms to rotate and swing upwards. Simultaneously, the first support frame drives the second support frame to rotate via a belt. The second support frame compresses the telescopic end of the cylinder, utilizing the pressure generated by the cylinder for leg-bending training. When the legs return to their starting position, the pressure generated by the cylinder remains stable. The controller and air pressure regulating assembly allow adjustment of the pressure within the cylinder and air tank, thereby regulating the resistance during training. The air tank also provides some cushioning. This utility model allows users to easily complete leg-bending training, adjusts the resistance as needed, maintains a stable load during training, protects the user's knees, and features a simple structure that is easy to install and maintain. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the air resistance leg bending training device of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the air resistance leg bending training device of this utility model after the pad assembly has been removed.

[0019] Figure 3 This is a side view of an embodiment of the air resistance leg bending training device of this utility model after the pad assembly has been removed.

[0020] Figure 4 This is a cross-sectional view of an embodiment of the pneumatic leg-bending training device of this utility model after the pad assembly has been removed.

[0021] Figure 5 This is a cross-sectional view of the soft pad in one embodiment of the air resistance leg bending training device of this utility model.

[0022] Component designation:

[0023] 100. Main frame; 110. Frame beam; 111. First upright; 112. Second upright; 113. First horizontal bar; 114. Second horizontal bar; 115. First bend; 116. Second bend; 120. Connecting beam; 121. First connecting beam; 122. Second connecting beam; 123. Third connecting beam; 124. Fourth connecting beam; 130. Base plate; 140. Handle; 150. Pad assembly; 200. Leg bend training assembly; 210. Training arm; 2 11. Mounting rod; 212. Pad; 213. End plate; 220. First support frame; 221. Arc plate; 222. First mounting frame; 230. Guide wheel; 300. Air resistance assembly; 310. Cylinder; 311. Second mounting frame; 320. Air tank; 321. Air tank box; 330. Air pressure regulating assembly; 340. Second support frame; 341. Third mounting frame; 342. Belt connecting pipe; 350. Belt; 400. Controller; 410. Fourth mounting frame. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0025] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0026] Please see Figures 1 to 5This utility model provides an air resistance leg-bending training device, comprising: a main frame 100, a leg-bending training component 200, an air resistance component 300, and a controller 400. The main frame 100 includes two frame beams 110 and several connecting beams 120. The two ends of the connecting beams 120 are respectively fixedly connected to the two frame beams 110. A base plate 130 is fixedly installed at the bottom of each end of the two frame beams 110. A handle 140 is provided at the bottom of one end of the main frame 100, and a pad assembly 150 is fixedly installed at the top of the main frame 100. The leg-bending training component 200 includes two training arms 210, which are rotatably mounted on the top of the main frame 100 at the end away from the handle 140. A first support frame 220 is provided at the bottom of each of the two training arms 210. The air resistance assembly 300 includes two cylinders 310, two air tanks 320, and an air pressure regulating assembly 330. The air pressure regulating assembly 330 is connected to the two cylinders 310, the two air tanks 320, and an air supply device via pipes. An air tank box 321 is provided on the main frame 100, and the two air tanks 320 are installed in the air tank box 321. The air pressure regulating assembly 330 is installed on the main frame 100. The cylinder ends of the two cylinders 310 are rotatably connected to the bottom surface of the main frame 100 facing the top of the leg bending training assembly 200. Two second support frames 340 are rotatably installed on the bottom surface of the main frame 100 away from the top of the leg bending training assembly 200. The middle part of the two second support frames 340 facing the cylinders 310 is rotatably connected to the telescopic ends of the two cylinders 310. The bottom of the two second support frames 340 is connected to the two first support frames via two belts 350. The controller 400 is mounted on the base plate 130 on the side away from the leg bending training component 200, and the controller 400 is electrically connected to the air pressure regulating component 330.

[0027] This utility model's air resistance leg bending training device places the main frame 100 on the ground or a base surface via two base plates 130. During training, the exerciser lies prone on the pad assembly 150 at the top of the main frame 100, with their head facing the controller 400, holding the handles 140 with both hands, and placing their legs on the leg bending training assembly 200. The legs drive the training arm 210 to rotate and swing upwards. At this time, the first support frame 220 drives the second support frame 340 to rotate via the belt 350. The second support frame 340 compresses the telescopic end of the cylinder 310, using the pressure generated by the cylinder 310 to perform leg bending training. When the legs fall back, the telescopic end of the cylinder 310 drives the second support frame 340 to swing back. The second support frame 340 drives the first support frame 220 and the training arm 210 to swing back via the belt 350. During the swinging process, the pressure generated by the cylinder 310 is stable, which can avoid impact on the exerciser's knees. The controller 400 and the air pressure regulating component 330 can be used to adjust the pressure inside the cylinder 310 and the air tank 320, thereby adjusting the resistance during training. The air tank 320 also provides a certain buffering effect. It should be noted that the air pressure regulating component 330 consists of an air pressure regulating valve and an air pressure sensor. The controller 400 controls the air pressure regulating valve to inflate or deflate, thereby regulating the pressure inside the cylinder 310 and the air tank 320. The air supply device can be an air pump or an air station. These components are all existing technology and will not be described in detail here.

[0028] Please see Figure 3 and Figure 4In one example of the air resistance leg bending training device of this utility model, the frame beam 110 includes a first upright 111, a second upright 112, a first crossbar 113, and a second crossbar 114. The top end of the first upright 111 is fixedly connected to one end of the first crossbar 113 through a first bend 115. The other end of the first crossbar 113 is fixedly connected to one end of the second crossbar 114 through a second bend 116. The other end of the second crossbar 114 is fixedly connected to the top end of the second upright 112. The bottom ends of the first upright 111 and the second upright 112 are respectively fixedly connected to the two base plates 130. The connecting beams 120 include a first connecting beam 121, a second connecting beam 122, a third connecting beam 123, and a fourth connecting beam 124. The two ends of the first connecting beam 121 are fixedly connected to the two first crossbars 113, respectively. The two ends of the second connecting beam 122 are fixedly connected to the ends of the two second crossbars 114 facing the first crossbars 113, respectively. The two ends of the third connecting beam 123 are fixedly connected to the ends of the two second crossbars 114 facing the second uprights 112, respectively. The two ends of the fourth connecting beam 124 are fixedly connected to the top ends of the two second uprights 112, respectively. The pad assembly 150 includes a first pad and a second pad. The first pad is fixedly installed on the top of the two first crossbars 113, and the second pad is fixedly installed on the top of the two second crossbars 114. The handle 140 is installed on the outer side of the bottom of the two first uprights 111.

[0029] Please see Figures 3 to 5 In one example of the air resistance leg-bending training device of this utility model, a first mounting frame 222 is provided on the third connecting beam 123. Two training arms 210 are rotatably mounted on the first mounting frame 222. Each of the two training arms 210 has a mounting rod 211 at its end away from the first mounting frame 222. A soft pad 212 is fitted onto each mounting rod 211. An end plate 213 is provided at each end of the soft pad 212. One end plate 213 is fixedly connected to the end of the mounting rod 211 by bolts. The side of the first support frame 220 facing the fourth connecting beam 124 is an arc-shaped plate 221. One end of the belt 350 is fixedly connected to the arc-shaped plate 221, and the belt 350 cooperates with the outer wall of the arc-shaped plate 221. Two guide wheels 230 are rotatably mounted on the top of the fourth connecting beam 124. Each guide wheel 230 engages with one of the two belts 350, and the outer walls of the guide wheels 230 engage with the arc-shaped plates 221 on the two first support frames 220. The guide wheels 230 guide the two belts 350, and the arc-shaped plates 221 and guide wheels 230 ensure smoother operation of the belts 350 and more stable force on the belts 350.

[0030] Please see Figure 3 and Figure 4 In one example of the pneumatic leg-bending training device of this utility model, a second mounting bracket 311 is provided on the side of the third connecting beam 123 away from the training arm 210, and the cylinder ends of the two cylinders 310 are respectively rotatably connected to the second mounting bracket 311. The second support frame 340 is a triangular plate, and the bottom of the first connecting beam 121 is provided with the third mounting bracket 341. The top ends of the two second support frames 340 are respectively rotatably connected to the third mounting bracket 341. The bottom end of the second support frame 340 is provided with a belt connecting pipe 342 for connecting the belt 350. The telescopic ends of the two cylinders 310 are respectively rotatably connected to the third ends of the two second support frames 340.

[0031] Please see Figure 3 In one example of the air resistance leg-bending training device of this utility model, a fourth mounting bracket 410 is provided on the base plate 130 located below the handle 140, and the controller 400 is fixedly mounted on the fourth mounting bracket 410. The controller 400 is provided with a touch screen. Rubber pads are provided on the bottom of both base plates 130.

[0032] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pneumatic resistance leg-bending training device, characterized in that, include: The main frame includes two frame beams and several connecting beams. The two ends of the several connecting beams are respectively fixedly connected to the two frame beams. A base plate is fixedly installed at the bottom of each end of the two frame beams. A handle is provided at the bottom of one end of the main frame. A pad assembly is fixedly installed at the top of the main frame. The leg-bending training component includes two training arms, which are rotatably mounted on the top of the main frame at the end away from the handle, and a first support frame is provided at the bottom of each of the two training arms. The air resistance assembly includes two cylinders, two air tanks, and an air pressure regulating component. The air pressure regulating component is connected to the two cylinders, the two air tanks, and an air supply device via pipes. An air tank box is provided on the main frame, and the two air tanks are installed inside the air tank box. The air pressure regulating component is installed on the main frame. The cylinder ends of the two cylinders are rotatably connected to the bottom surface of the main frame facing the top of the leg bending training component. Two second support frames are rotatably installed on the bottom surface of the main frame away from the top of the leg bending training component. The middle part of the two second support frames facing the cylinders is rotatably connected to the telescopic ends of the two cylinders. The bottom of the two second support frames is connected to the two first support frames via two belts. A controller is mounted on the base plate on the side away from the leg-bending training component, and the controller is electrically connected to the air pressure regulating component.

2. The air resistance leg-bending training device as described in claim 1, characterized in that, The frame beam includes a first upright, a second upright, a first horizontal bar, and a second horizontal bar. The top end of the first upright is fixedly connected to one end of the first horizontal bar via a first bend. The other end of the first horizontal bar is fixedly connected to one end of the second horizontal bar via a second bend. The other end of the second horizontal bar is fixedly connected to the top end of the second upright. The bottom ends of the first upright and the second upright are respectively fixedly connected to the two base plates.

3. The air resistance leg-bending training device as described in claim 2, characterized in that, The connecting beams include a first connecting beam, a second connecting beam, a third connecting beam, and a fourth connecting beam. The two ends of the first connecting beam are respectively fixedly connected to the two first crossbars. The two ends of the second connecting beam are respectively fixedly connected to the two second crossbars facing the first crossbars. The two ends of the third connecting beam are respectively fixedly connected to the two second crossbars facing the second uprights. The two ends of the fourth connecting beam are respectively fixedly connected to the top ends of the two second uprights.

4. The air resistance leg-bending training device as described in claim 2, characterized in that, The pad assembly includes a first pad and a second pad, the first pad being fixedly installed on the top of the two first crossbars, the second pad being fixedly installed on the top of the two second crossbars, and the handle being installed on the outer side of the bottom of the two first uprights.

5. The air resistance leg-bending training device as described in claim 3, characterized in that, The third connecting beam is provided with a first mounting frame, and the two training arms are rotatably mounted on the first mounting frame. Each of the two training arms is provided with a mounting rod at the end away from the first mounting frame. Each mounting rod is fitted with a soft pad, and each end of the soft pad is provided with an end plate. One end plate is fixedly connected to the end of the mounting rod by bolts.

6. The air resistance leg-bending training device as described in claim 3, characterized in that, The first support frame has an arc-shaped plate facing the fourth connecting beam. One end of the belt is fixedly connected to the arc-shaped plate, and the belt cooperates with the outer wall of the arc-shaped plate.

7. The air resistance leg-bending training device as described in claim 6, characterized in that, Two guide wheels are rotatably mounted on the top of the fourth connecting beam. The two guide wheels are respectively engaged with the two belts, and the outer walls of the two guide wheels are respectively engaged with the arc-shaped plates on the two first support frames.

8. The air resistance leg-bending training device as described in claim 3, characterized in that, The third connecting beam is provided with a second mounting bracket on the side away from the training arm, and the cylinder ends of the two cylinders are respectively rotatably connected to the second mounting bracket.

9. The air resistance leg-bending training device as described in claim 3, characterized in that, The second support frame is a triangular plate, the bottom of the first connecting beam is provided with a third mounting frame, the top ends of the two second support frames are respectively rotatably connected to the third mounting frame, the bottom end of the second support frame is provided with a belt connecting pipe for connecting the belt, and the telescopic ends of the two cylinders are respectively rotatably connected to the third ends of the two second support frames.

10. The air resistance leg-bending training device as described in claim 1, characterized in that, A fourth mounting bracket is provided on the base plate located below the handle, and the controller is fixedly mounted on the fourth mounting bracket. The controller is equipped with a touch screen.

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