Weight generating device for strength exercise

Abstract

Since it has been inconvenient to adjust the weight by moving the weights used in exercise equipment in the past, the present invention relates to a weight generating device for muscle exercise, which generates weight with vacuum pressure by adjusting a lever or valve. The first cylinder, which is connected to the exercise equipment and moves up and down, is connected to the second cylinder via an air hose, and the generated weight can be easily adjusted by adjusting the internal volumes of the first cylinder, the air hose, and the second cylinder. In addition, the present invention proposes a foldable exercise equipment that can be applied to the frames of various existing exercise equipment and can be easily moved and stored indoors when applied to a foldable exercise equipment.

Description

[Technical Field]

[0001] The present invention relates to a weight generating device for muscle exercise, which uses cylinders capable of generating vacuum pressure instead of weights used in existing muscle exercise equipment, and generates a desired weight by changing the area and number of cylinders, the volume of the air chamber, the opening and closing area of ​​the valve, etc. [Background technology]

[0002] Exercise can be divided into aerobic exercise and strength exercise depending on the purpose, and into outdoor exercise and indoor exercise depending on the location.

[0003] Outdoor aerobic exercise can be done by simply walking or running without any equipment, or by using equipment such as a bicycle. Indoor aerobic exercise requires equipment such as a treadmill or indoor bicycle, which are already widely available.

[0004] Strength exercises, such as push-ups, can be done indoors and outdoors without any equipment, but to develop various muscles in the body, it is necessary to use an indoor fitness center equipped with specialized equipment. Even if such facilities are used, there are inconveniences, such as the need for a professional trainer to assist with exercises at all times due to safety accidents and injuries. For these reasons, it is difficult to install various strength exercise equipment in public facilities such as parks, promenades, and apartment complexes, and it is even more difficult to install it in homes due to safety and space constraints.

[0005] As the COVID-19 pandemic continues, people are staying at home, and so-called "home workouts" have become a trend. Sales of simple exercise equipment, such as yoga mats, stretch bands, gym balls, and dumbbells, as well as specialized exercise equipment like foam rollers, bench presses, and pull-up bars, are also booming. Sales of indoor exercise equipment increased 50% and 43%, respectively, in January and February 2017 compared to the same periods last year. This trend is also evident on social media. Over the past two years, the increase in home workouts has been significantly higher than the number of posts mentioning "gyms." Home workouters are recording their exercise routines and sharing their "body profiles" in real time on various channels, including social media, blogs, clubs, and Twitter accounts, capturing photos of their body changes.

[0006] However, as home training has recently become popular, various safety accidents have occurred, urging caution. The Korea Consumer Agency reported that a total of 207 home training-related safety accidents have been reported to its Consumer Safety Surveillance System (CISS) over the past three years (2016-2018), with over 60 cases reported annually. An analysis of the causes of the accidents by type of equipment revealed that 28.3% of the accidents were caused by falling off an indoor cycle, while 65.2% were safety accidents caused by the impact of dumbbells or other equipment.

[0007] Therefore, for consumers who are unable to exercise due to the safety and inconvenience of existing exercise equipment, there is a need for a weight generating device that can minimize the drawbacks of all commercially available muscle exercise equipment and eliminate the dangers associated with heavy objects and the inconvenience of adjusting the weight. Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, the present invention has been derived to solve the above-mentioned problems of the prior art, and proposes a weight generating device for muscle exercise in which the weight is adjusted by operating a valve and a lever instead of moving a heavy weight.

[0009] We also propose a weight generation device for muscle exercise that generates weight of the same magnitude and direction when the user applies force and when returning using vacuum pressure.

[0010] We also propose a weight generating device for muscle strength exercise that is equipped with a safe vacuum pressure system to prevent falls and injuries during exercise.

[0011] In addition, we propose a weight generating device for muscle exercise that can be reduced in volume and weight so that it can be easily moved and stored indoors. [Means for solving the problem]

[0012] The present invention is characterized in that it includes a first piston that moves up and down due to an external force and includes a coupling part at its top that couples with an exercise machine; a first cylinder that includes a first suction chamber formed between the first piston and a first bottom surface and in which vacuum pressure is generated when the first piston is pulled; a second cylinder that includes a second suction chamber formed between a second piston and a second bottom surface; an air hose arranged to connect the first suction chamber and the second suction chamber; a weight adjustment unit that controls the position of the second piston; and a housing that includes the second cylinder and the weight adjustment unit, wherein the weight adjustment unit changes the position of the second piston to adjust the volume of the second suction chamber, thereby adjusting the generated weight.

[0013] The weight adjustment unit also includes a connecting part connected to the upper end of one or more of the second pistons, a rotating shaft having one end penetrating the center of the connecting part in the height direction and the other end penetrating the housing and having a screw thread formed on its outer surface, a lever connected to the other end of the rotating shaft, and a fixing member connected to the rotating shaft and disposed at the lower end of the connecting part.

[0014] The weight generating device is characterized in that a plurality of the first cylinders are connected to one or a plurality of the second cylinders.

[0015] The weight generating device is characterized in that one or a plurality of the first cylinders are connected to a plurality of the second cylinders.

[0016] The air hoses are connected to the second suction chamber at predetermined intervals in the height direction on the outer surface of the second cylinder, and each air hose includes an adjustment valve for on / off or proportional control.

[0017] The outer surface of the first cylinder and the outer surface of the second cylinder are joined together to connect the first suction chamber and the second suction chamber.

[0018] The first cylinder is disposed inside the second cylinder, and the first suction chamber and the second suction chamber are connected to each other.

[0019] The exercise machine also includes a first piston that moves up and down due to an external force and includes a coupling portion at its top end that couples with the exercise equipment; a first cylinder that includes a first suction chamber that is formed between the first piston and a first bottom surface and generates a vacuum pressure when the first piston is pulled; a chamber block that has a hole in the center where the first cylinder is located; and the chamber block includes a first chamber block that includes a control valve and a second chamber block that includes a second suction chamber, the first chamber block and the second chamber block being stacked alternately.

[0020] The first cylinder is connected to the chamber block disposed at the lowest end.

[0021] The first chamber block is connected to the second chamber block that contacts the top and bottom surfaces thereof, and the volume of the second suction chamber is adjusted, thereby adjusting the generated weight. [Effects of the Invention]

[0022] The present invention has the advantage that instead of shifting heavy weights, weight can be adjusted by manipulating valves and levers.

[0023] Also, vacuum pressure is used to generate weight in the same direction when the user applies and releases force.

[0024] It also has a safety air pressure system to prevent falls and injuries during exercise.

[0025] Additionally, the volume and weight can be reduced to facilitate indoor transportation and storage. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a conceptual diagram of the present invention. [Figure 2] 1 is a conceptual diagram of the present invention. [Figure 3] 1 is an illustrative diagram of the present invention; [Figure 4] 1 is an illustrative diagram of the present invention; [Figure 5] 1 is an illustrative diagram of the present invention; [Figure 6] 1 is a stroke-weight graph of the present invention. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 9 is a conceptual diagram of FIG. [Figure 10] FIG. 2 is a configuration diagram of a first chamber block. [Figure 11] 1 is a diagram illustrating an example of exercise equipment to which the present invention is applied; [Figure 12] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; [Figure 13] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; [Figure 14] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; [Figure 15] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; [Figure 16] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; [Figure 17] 1 is a diagram illustrating a foldable exercise machine to which the present invention is applied; DETAILED DESCRIPTION OF THE INVENTION

[0027] Conventional exercise equipment requires the application of force by hanging weights, which can lead to accidents such as the weights coming off and falling or during the process of transferring the weights. Even experts who are accustomed to using the equipment can be injured at any time if they let their guard down even for a moment. Furthermore, there are space limitations due to the need to carry a variety of weights.

[0028] The present invention uses the principle of generating weight using vacuum pressure instead of weights, which solves the problem of weights coming off during exercise. Air pressure acts as a shock absorber, preventing injuries that may occur when the weight suddenly drops due to carelessness or a decrease in muscle endurance. Furthermore, various weights can be changed simply by adjusting the lever and valve, making it possible to perform muscle exercises of various weights and shapes even in a small space.

[0029] Hereinafter, the weight generating device for muscle exercise according to the present invention having the above-mentioned configuration will be described in detail with reference to the accompanying drawings.

[0030] [1] Overall configuration and operating principle of the present invention FIG. 1 is a conceptual diagram of the present invention. Referring to FIG. 1, a first cylinder 100 has an exercise machine 500 connected to its upper end and moves up and down in a piston-like manner due to an external force. The lower end of the first cylinder 100 is connected to one end of an air hose 200, and the other end is connected to the lower end of a second cylinder 300. The air hose 200, which connects the first cylinder 100 and the second cylinder 300, is connected to a control valve 330 that turns the connection on / off or proportionally controls it, and an exhaust valve 340 that turns the connection to the outside on / off. The position of the piston located in the second cylinder 300 is adjusted by a weight adjustment unit 400. The position of the weight adjustment unit 400 is adjusted by a lever located at the lower end, and the internal volume of the second cylinder 300 is adjusted to adjust the generated weight.

[0031] Here, the generated weight is generated below the first cylinder 100, and when the user pushes or pulls the exercise machine 500, the weight is generated in the same direction.

[0032] 2 is a conceptual diagram of the present invention. Referring to FIG. 2, a first cylinder 100 contains a first piston 150 that moves up and down in response to an external force, and a coupling part 140 that couples with an exercise machine 500 is disposed at the top of the first piston 150. A discharge part 110 that communicates with the outside air is disposed at the top of the first cylinder 100, and the space between the top surface of the first piston 150 and the discharge part 110 is defined as a discharge chamber 120. The discharge chamber 120 is connected to the outside air and is always maintained at atmospheric pressure, and air flows in and out as the first piston 150 moves up and down.

[0033] The space between the lower surface of the first piston 150 and the bottom surface of the first cylinder 100 is referred to as the first suction chamber 130, which is isolated from the discharge chamber 120. The first suction chamber 130 is connected to the outside through a first connection part 160 formed on the bottom surface of the first cylinder 100, and is connected to the second cylinder 300 through an air hose 200 as shown.

[0034] The second cylinder 300 includes a second piston 310 that moves up and down due to an external force. A discharge port is provided at the upper end of the second cylinder 300, allowing smooth up and down movement. A weight adjustment unit 400 is coupled to the upper end of the second piston 310 to adjust the position of the second piston 310. The space between the lower surface of the second piston 310 and the second bottom surface of the second cylinder 300 is defined as a second suction chamber 320. The second suction chamber 320 is connected to the first suction chamber 130 via a second connection unit 350 formed at the lower end and the air hose 200. The second connection unit 350 is formed at the bottom surface of the second cylinder 300 and can be connected to the air hose 200.

[0035] The spaces of the first suction chamber 130, the second suction chamber 320, and the air hose 200 are sealed, and the weight generated in the exercise equipment 500 changes according to the sum of the volumes of each.

[0036] 3 to 5 are exemplary diagrams of the present invention. Referring to FIG. 3, a plurality of first cylinders 100 are connected to one second cylinder 300. The upper ends of the plurality of first cylinders 100 are connected to the exercise equipment 500 by a connecting portion, and the lower ends are formed with first connecting portions, which are connected to the second cylinders 300 via air hoses 200. The second cylinder 300 has a plurality of second connecting portions formed in the circumferential direction at its lower end, which connects to the plurality of first cylinders 100. When one first connecting portion 160 is formed, a plurality of air hoses 200 are connected to each other and connected to the plurality of first cylinders 100.

[0037] Here, the air hose 200 is connected to an exhaust valve 340 that opens and closes connection with the outside air and a control valve 330 that blocks air from entering the second cylinder 300. Because the first suction chamber 130, the second suction chamber 320, and the air hose 200 are sealed spaces, the control valve 330 and the exhaust valve 340 are opened and then the weight is adjusted to adjust the internal pressure to atmospheric pressure. If the number of first cylinders 100 connected to one second cylinder 300 increases, the second cylinders 300 will take in more air per stroke of the exercise device 500, and the weight generated by the first cylinder 100 will increase. Conversely, as the number of second cylinders 300 connected to one first cylinder 100 increases, the generated weight will decrease.

[0038] 4 and 5 are diagrams showing an example in which a plurality of first cylinders are connected to a plurality of second cylinders. The upper ends of the plurality of first cylinders 100 are connected to the exercise machine 500 by a connecting part, and the lower ends are formed with a first connecting part 160 and are connected to a plurality of second cylinders 300 via air hoses 200. The air hoses 200 are connected to an exhaust valve 340 that opens and closes the connection with the outside air and a control valve 330 that blocks air from entering the inside of the second cylinders 300.

[0039] 4, a weight adjusting unit 400 is coupled to the upper ends of the plurality of second cylinders 300, and the plurality of second cylinders 300 are connected to each other. The weight adjusting unit 400 includes a connecting unit 410 coupled to the upper end of one or more second pistons 310, a rotating shaft 430 having one end passing through the center of the connecting unit 410 in the height direction and the other end passing through the housing 420 and having a thread formed on the outer surface, a lever 440 coupled to the other end of the rotating shaft 430, and a fixing member 450 coupled to the rotating shaft 430 and disposed at the lower end of the connecting unit 410.

[0040] The connecting part 410 is connected to the upper ends of the second pistons 310 and simultaneously adjusts the positions of the second pistons 310, and the positions are adjusted by a rotating shaft 430 having a lever 440 formed thereon. To fix the position of the second pistons 310, a fixing member 450 is coupled to the rotating shaft 430, and the fixing member 450 may be further formed on the outside of the housing 420.

[0041] 5 is an exemplary view showing a state in which the position of the second piston 310 is moved by the rotation of the lever 440, and the volume of the second suction chamber 320 is increased. The first cylinder 100 is connected to the exercise equipment 500, and the air hose 200 is connected to the second cylinder 300 by a first connecting part formed at the lower end.

[0042] Here, the second cylinder 300 may have a number of air hoses 200 connected to it in the height direction or circumferential direction. Each air hose 200 may be connected to a control valve 330 or to the first cylinder 100 and a cylinder having a predetermined space. This is to adjust the weight generated by increasing or decreasing the volume of the enclosed space. The exhaust valve 340 is adjusted first during weight adjustment, so that the pressure in the enclosed space before the exercise device 500 moves up and down maintains atmospheric pressure.

[0043] Figure 6 is a stroke-weight graph. Referring to Figure 6, it can be seen that the weight generated after a given stroke is constant. Therefore, it can be seen that the present invention can adequately replace previously used weights. A is a graph showing the change in weight depending on the number of first cylinders, and B is a graph showing the change in weight depending on the volume of the second suction chamber in the second cylinder. All initial values ​​are the same at atmospheric pressure.

[0044] A can rapidly change the weight generated by changing the number of first cylinders, and can be applied to professionals, the general public, etc. depending on the number. B-1 is an example where one cylinder is applied, B-2 is an example where two cylinders are applied, and B-3 is an example where three cylinders are applied.

[0045] The weight of B changes depending on the position of the second piston. In the case of a conventional weight, the weight generated by a predetermined weight is adjusted, but in the present invention, the weight is generated according to the position of the second piston and the volume of the sealed space, and it can be adjusted in smaller units than the conventional weight.

[0046] FIG. 7 is a view showing a modified example of the present invention. The first cylinder 100 and second cylinder 300 of the present invention may be integrated or combined. Referring to FIG. 7(a), an exercise device 500 is combined with the top end of a first piston 150, and the first piston 150 is inserted into a second piston 310 to perform piston movement. The discharge port of the first cylinder 100 protrudes outward, allowing for unhindered up and down movement. The first piston 150 included in the second piston 310 has a first connecting portion 160 at its bottom, connecting the first suction chamber 130 and the second suction chamber 320. A lever 440 is also provided to adjust the position of the second piston 310 and adjust the generated weight. The lever 440 may be located at the side or bottom of the second cylinder 300, but may also be located at any position that allows for adjustment of the volume of the second suction chamber 320.

[0047] FIG. 7(b) is an example of a second cylinder 300 coupled to the outer surface of a first cylinder 100. A first connector formed on the bottom surface of the first cylinder 100 and a second connector formed on the bottom surface of the second cylinder 300 are directly coupled. A weight generating device 1000 in which the first cylinder 100 and the second cylinder 300 are directly coupled can be configured in a compact manner. The first cylinder 100 has multiple first coupling portions 160 formed in the circumferential direction, allowing multiple second cylinders 300 to be coupled, thereby adjusting the generated weight. In addition, multiple second coupling portions 350 are formed to allow coupling between the second cylinders 300, allowing the generated weight to be adjusted.

[0048] In addition, the second cylinder 300 may be connected to the lower end of the first cylinder 100, and various modifications may be made using the air hose 200.

[0049] 8 shows a modified weight generation device. The lower end serves as a base 360 ​​that supports the weight generation device, and multiple chamber blocks 370 are stacked on the upper end of the base 360. A first cylinder 100 is inserted in the center of the chamber block 370, and a cylinder cover 380 is placed on the upper end of the chamber block 370. The base 360, chamber block 370, and cylinder cover 380 are stacked in this order and fixed in place by multiple fastening members 390 in the stacking direction.

[0050] The chamber block 370 is divided into a first block including the control valve 330 and a second block including the second suction chamber, which are stacked in order, and the control valve 330 of the first block connects the second suction chambers of the second block located at the top and bottom. The generated weight can be easily adjusted by adjusting the control valve 330 from the bottom.

[0051] The fastening member 390 has the form of a long bolt. Insertion holes into which the fastening member 390 is inserted are formed at the corners of the cylinder cover 380 and the chamber block 370, and fastening holes are formed in the base 360 ​​at positions corresponding to the insertion holes, so that the fastening member 390 joins the components of the weight generating device.

[0052] FIG. 9 is a conceptual diagram of FIG. 8, and FIG. 10 is a structural diagram of the first chamber block. Referring to FIGS. 9 and 10, the chamber block 370 has a hole in the center into which the first cylinder 100 is inserted and holes in the corners into which the fasteners 390 are inserted. The first chamber block 370-1 has a control valve 330 disposed on one side. The control valve has a handle 521 on the outside of the first chamber block 370-1 that can be operated by a user, and a passage is formed inside the first chamber block 370-1 to connect the upper and lower second chamber blocks 370-2. The second chamber block 370-2 has the same external shape as the first chamber block 370-1, but has a space formed inside corresponding to the second suction chamber 320 and a hole formed in the first chamber block 370-1 at a position corresponding to the control valve 330. A gasket 371 is inserted between the chamber blocks 370 to prevent external air from entering and internal air from leaving.

[0053] The first chamber block 370-1 may have a space formed therein to form a second suction chamber, and the type and shape of the control valve 330 may be changed to utilize the second suction chamber within the first chamber block 370-1.

[0054] As described above, a weight generating device using multiple chamber blocks connected to a first cylinder is provided, and the generated weight can be easily adjusted by the multiple chamber blocks and the control valve.

[0055] [2] Exercise equipment using the present invention 11 is a diagram showing a configuration in which a weight generating device is disposed on the outside of an exercise machine. Referring to FIG. 11, a first cylinder 100 is disposed on the outside of a pillar of the exercise machine 500, and a weight adjusting unit 400 and a second cylinder 300 are disposed at the bottom of the bench. The exercise machine 500 moves up and down by an external force of a load bar 520 connected to the top end of the first cylinder 100, and the first cylinder 100 and the second cylinder 300 are connected by an air hose 200.

[0056] Here, the first cylinder 100 is connected to a stationary frame, and the device that moves up and down is connected to the connecting part 140. The weight adjusting part 400 is disposed at the lower end of the bench or connected to the stationary frame.

[0057] The stroke length of the exercise equipment 500 can be changed in design according to the length of the first cylinder 100, and by providing multiple second cylinders 300, the weight can be easily adjusted.

[0058] In fact, the present invention can be combined with exercise equipment used in gyms, which not only prevents safety accidents and injuries, but also reduces equipment costs and simplifies disassembly, assembly, and transportation.

[0059] Furthermore, since the initial pressure value of the present invention is the same as atmospheric pressure, noise and safety accidents that may occur when the exercise bar is suddenly lowered or slips down during exercise can be prevented.

[0060] The exercise equipment can work in conjunction with the application to check the amount of exercise depending on the exercise method, and the application can design a safety system to set a warm-up step to relieve tension and pre-warm the body with light weights before weight exercise.

[0061] [3] Foldable exercise equipment using the present invention 12 to 17 are diagrams illustrating a multi-press using the weight generator described above. The following description applies the weight generator of FIG. 8 and proposes a foldable exercise machine for home use. Referring to FIG. 12, weight generators 1000 are arranged, and frames 510 are arranged between the weight generators 1000 to adjust and fix the spacing between the weight generators 1000. Support plates 530 are arranged in front and behind the frames 510, and a mat 531 is placed on the top of the support plates. The weight generators 1000 arranged at both ends have load bars 520 at their upper ends that move up and down, and handles 521 are arranged on the load bars 520 to allow the user to change their grip position.

[0062] 13, the support plate 530 and mat 531 arranged at the front and rear of the support plate 530 are arranged vertically for easy storage. Fig. 13(a) is a front perspective view, and Fig. 13(b) is a rear perspective view. The support plate arranged at the front can be smaller than the support plate arranged at the rear, and the frame and support plate can be connected by a hinge or the base and support plate can be connected and move, as needed.

[0063] 14 to 16 are exemplary views illustrating exercise methods according to the direction of the handle 521. As shown in the drawings, the handle 521 disposed on the load bar 520 can be changed according to the user's desired grip position. Referring to FIG. 14, an exemplary view is shown of a bench press mode in which the handle 521 is disposed below the load bar 520 and the user pushes up vertically from below. Referring to FIG. 15, an exemplary view is shown of a leg press mode in which the handle 521 is disposed on the front or rear of the load bar 520 and the user pushes up with the strength of their legs. The support plate 530, which the user's back contacts, may have an angle adjustment member disposed on the rear so that the angle of the handle 521 can be adjusted, thereby changing the angle of the handle 521. Referring to FIG. 16, an exemplary view is shown of a deadlift mode in which the handle 521 is disposed above the load bar 520 and the user pulls up from above. As described above, various exercises are possible depending on the position of the handle 521.

[0064] The above mode names are merely examples and are not intended to limit the exercise.

[0065] FIG. 17 shows a modified example of the present invention. Referring to FIG. 17, this shows a seated angle-adjustable table that changes the position of the support plate 530. The support plate 530 can be combined with the load bar 520 to be used as a table, and the angle of the support plate 530 can be adjusted depending on the position. This is a combination of exercise equipment and furniture, and the exercise equipment can be transformed into a table or similar and placed indoors. The above features aimed at home training have the advantages of increasing the user's space utilization, reducing costs, and providing convenience and interior elements.

[0066] Since the present invention can be modified in various ways and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail, but it should be understood that this does not limit the present invention to the specific embodiments, and that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and technical scope of the present invention.

[0067] When a component is referred to as being "coupled" or "connected" to another component, it should be understood that although it may be directly coupled or connected to the other component, there may also be other components in between.

[0068] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0069] Terms defined in commonly used dictionaries should be construed to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be construed in an idealized or overly formal sense unless expressly defined in this application.

[0070] The present invention is not limited to the above-described embodiments, and it goes without saying that the scope of application is diverse, and that various modifications can be made without departing from the gist of the present invention as claimed in the claims. [Explanation of symbols]

[0071] 1000 Weight Generator 100 No. 1 cylinder 110 Discharge part 120 discharge chamber 130 First intake chamber 140 Joint 150 First piston 160 1st connection part 200 Air Hose 300 No. 2 cylinder 310 Second piston 320 Second intake chamber 330 Control Valve 340 Exhaust valve 350 2nd connection part 360 Base 370 Chamber Block 370-1 First Chamber Block 370-2 Second Chamber Block 380 cylinder cover 390 Fastening members 400 Weight adjustment section 410 Connection section 420 Housing 430 Rotational Axis 440 Lever 450 Fixing member 500 exercise equipment 510 frames 520 Road Bar 521 Handle 530 Support plate 531 Matt

Claims

1. a first piston that moves up and down due to an external force and includes a coupling portion at its upper end that couples with the exercise equipment; a first cylinder including a first suction chamber formed between the first piston and a first bottom surface, in which a vacuum pressure is generated by pulling the first piston; a second cylinder including a second intake chamber formed between the second piston and the second bottom surface; an air hose arranged to connect the first suction chamber and the second suction chamber; a weight adjusting unit that adjusts the volume of the second intake chamber by controlling the position of the second piston; a housing including the second cylinder and the weight adjustment portion, an end of the air hose connected to a second intake chamber of the second cylinder; The air hose further includes one or more control valves for turning on / off the air hose and an exhaust valve connected to the outside, The weight adjustment unit is a connecting portion coupled to an upper end of one or more of the second pistons; a rotating shaft having a screw thread formed on an outer surface thereof, one end of which is disposed to penetrate the center of the connecting portion in the height direction and the other end of which is disposed to penetrate the housing; a lever coupled to the other end of the rotary shaft; a fixing member that is connected to the rotating shaft and disposed at a lower end of the connecting portion; When the exhaust valve is opened and the internal pressure is atmospheric pressure, A weight generating device in which the position of the second piston is changed by the weight adjustment unit, and when the exhaust valve is closed, the position of the second piston is fixed, thereby adjusting the volume of the second intake chamber, thereby adjusting the weight generated by the pulling of the first piston.

2. The weight generating device is 2. The weight generating device according to claim 1, wherein a plurality of the first cylinders and one of the second cylinders are connected to each other.

3. The weight generating device is 2. The weight generating device according to claim 1, wherein one first cylinder and a plurality of second cylinders are connected to each other.

4. 2. The weight generating device according to claim 1, wherein an outer surface of the first cylinder and an outer surface of the second cylinder are joined together to connect the first suction chamber and the second suction chamber.

5. The weight generating device according to claim 1, wherein the first cylinder is disposed inside the second cylinder, and the first suction chamber and the second suction chamber are connected to each other.

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