Leg bending and lifting machine

Abstract

According to one embodiment of the present invention, the leg bending and lifting machine, as a leg bending and lifting machine in which a user can move by raising a counterweight by raising a lever connected to the counterweight in a prostrate state, comprises: a frame part which stands in a state supported by the ground; a seating part connected to the frame part and providing a space in which a user can lie prostrate; a motion rotation part which is connected to the frame part, is disposed adjacent to the placement part, provides a space in which the legs of the user lying prostrate are suspended, and is rotated by an external force applied by the user; a weight part which is supported by the frame part and accommodates a plurality of balancing weights; and a weight transmission part which is connected to the frame part, plays a role in intermediating between the movement rotation part and the weight part, and is linked with the rotation of the movement rotation part to lift a balancing weight of the weight part.

Description

Technical Field

[0001] The present invention relates to a leg curl machine, in particular to a leg curl machine in which a user can lift a weight block by lifting a lever connected to the weight block while lying on his / her stomach. Background Art

[0002] In recent years, the fitness craze, promoted through broadcast media as a way to prevent obesity and adult diseases, has led to a surge in the number of people, young and old, men and women, enjoying various sports. While there are many types of exercise, recently many people have signed up for and exercised at fitness clubs.

[0003] Many people go to fitness clubs for exercise because they offer a wide variety of exercise equipment and can adjust the weight load to suit their physical condition and exercise intensity. Fitness clubs also offer the advantage of allowing exercise to be enjoyed regardless of season, weather, or time of day.

[0004] Generally speaking, the exercises performed in fitness clubs can be roughly divided into aerobic exercises and equipment exercises, which can be further divided into upper body muscle exercises, lower body muscle exercises, abdominal muscle exercises, etc. according to the purpose of exercise.

[0005] Among them, representative exercise equipment for exercising lower body muscles include a leg curl machine, a leg extension curl machine, and an air walker.

[0006] This leg curl machine is a movement in which the user lies prone, places a weighted mat on their calves, and repeats the motion of bending their knees and then straightening their legs. The load can be adjusted to suit the user by adding or removing weights from the shaft connected to the mat.

[0007] (Prior art literature)

[0008] (Patent Document)

[0009] (Patent Document 1) Korean Registered Patent No. 10-1654760 Summary of the Invention

[0010] Technical problems to be solved

[0011] The object of the present invention is to provide a leg curl machine suitable for effectively exercising the leg muscles, hamstrings, buttocks and knee joints.

[0012] Solutions to the Problem

[0013] According to an embodiment of the present invention, a leg curl machine is a machine in which a user can lift a counterweight block to perform exercise in a prone position by raising a lever connected to the counterweight block, and includes: a frame portion, which stands in a state supported by the ground; a placement portion, which is connected to the frame portion and provides a space for the user to lie prone; a motion rotation portion, which is connected to the frame portion and is arranged adjacent to the placement portion to provide a space for the prone user to hang his legs, and is rotated by an external force applied by the user; a weight portion, which is supported by the frame portion and accommodates a plurality of counterweight blocks; and a weight transfer portion, which is connected to the frame portion, acts as an intermediary between the motion rotation portion and the weight portion, and lifts and lowers the counterweight blocks of the weight portion in conjunction with the rotation of the motion rotation portion.

[0014] According to an embodiment of the present invention, the resting portion of the leg curl machine comprises: a leg resting portion, which supports the legs of a user lying prone; a body resting portion, which is arranged adjacent to the leg resting portion and supports the torso of the user lying prone; an arm resting portion, which is arranged adjacent to the body resting portion and can support the arms of the user lying prone; and a gripping portion, which provides a space for the user to grip when connected to the arm resting portion, the leg resting portion and the body resting portion form a first angle convex to the upper side, the leg resting portion has an elastic feel, and the corners are formed in a trapezoidal shape with rounded corners, and the leg resting portion is arranged in a manner that decreases in width in a direction toward the body resting portion, the body resting portion has an elastic feel, and the corners are formed in a trapezoidal shape with rounded corners, and the arm resting portion is arranged in a manner that decreases in width in a direction toward the arm resting portion, and the arm resting portion comprises: a height adjustment portion, the height adjustment portion is adjustable from The frame portion is upright and connected in a height-adjustable manner with the frame portion as a reference; a flat surface providing portion, the flat surface providing portion is connected to the upper side of the height adjustment portion and is linked with the height adjustment portion, and provides a flat surface on the upper portion; a first arm support member, the first arm support member is placed on the upper surface of the flat surface providing portion and supports the left arm of the prone user; and a second arm support member, the second arm support member is placed on the upper surface of the flat surface providing portion and supports the right arm of the prone user, the grip portion comprises: a 1-1 grip member, the 1-1 grip member is formed on the upper surface of the flat surface providing portion and is arranged on the front side of the first arm support member; a 1-2 grip member, the 1-2 grip member is formed on the upper surface of the flat surface providing portion and is arranged on the front side of the second arm support member; a 2-1 grip member, the 2-1 grip member is formed on the bottom surface of the flat surface providing portion and is arranged on the front side of the first arm support member;and a second gripping member, the second gripping member being formed on the bottom surface of the flat surface providing portion and being arranged on the front side of the second arm support member, the first gripping member being composed of a first standing member and a first bending portion, the first standing member being stood from the flat surface providing portion, the first bending portion being bent obliquely from the upper side of the first standing member, the first-2 gripping member being composed of a second standing member and a second bending portion, the second standing member being stood from the flat surface providing portion, the second bending portion being bent obliquely from the upper side of the second standing member, the 2-1 gripping member and the 2-2 gripping member being formed in a rod shape and being arranged obliquely in such a manner that the distance between them becomes farther from each other as they go downwards, the first arm support member and the second arm support member being elastic and having corners formed in a square shape with rounded corners, and being arranged obliquely in such a manner that the distance between them becomes farther from the gripping portion as they go farther, the first arm support member and the second arm support member being formed by a center region having a relatively greater friction coefficient than that at both side ends The height adjustment portion is formed of a material with a high coefficient of friction, and includes: a first hollow rod, the first hollow rod standing from the frame portion and formed into a hollow cylindrical shape; a second hollow rod, the second hollow rod formed into a hollow cylindrical shape and, when formed into multiple concentric layers with the first hollow rod, adjusting the height from the ground depending on whether it is accommodated inside the first hollow rod; and a height adjustment button portion, the height adjustment button portion, when mounted on the first hollow rod, being inserted into the first hollow rod and the second hollow rod simultaneously to restrict the positional movement of the second hollow rod relative to the first hollow rod, or being detached from the second hollow rod to allow the second hollow rod to move relative to the first hollow rod, the second hollow rod being formed with a plurality of fastening holes spaced apart in the height direction, the height adjustment button portion, when inserted into the fastening holes of the second hollow rod, being released from the fastening holes by an applied external force, and returning to its position in the opposite fastening hole when the applied external force is released.

[0015] According to an embodiment of the present invention, the frame portion of the leg curl machine includes: a lower support portion, which is supported on the ground; a counterweight accommodating portion, which is arranged behind the placement portion, stands from the lower support portion, and forms an accommodating space inside to provide a space for accommodating the weight portion; a placement support portion, which stands from the lower support portion and supports the placement portion; a transfer support portion, which stands from the lower support portion and is arranged adjacent to the counterweight accommodating portion to support the weight transfer portion; and a motion support portion, which acts as an intermediary between the transfer support portion and the placement support portion and supports the motion rotation portion, the counterweight accommodating portion includes an adjustment opening portion, which opens from the front of the placement portion so that at least a portion of the weight portion is exposed to the outside, and the placement support portion includes: a standing support member, which supports the leg placement portion; and an intermediate support member, one side of the intermediate support member is connected to the bottom surface of the leg placement portion, and the other side is connected to the height adjustment portion.

[0016] According to one embodiment of the present invention, the weight portion of the leg curl machine includes: a counterweight stacking portion, which is formed by stacking a plurality of separable counterweights when accommodated in the counterweight accommodating portion; a wire rod, one side of the wire rod is connected to the weight transfer portion, and the other side is connected to the counterweight stacking portion, so that the counterweight stacking portion is raised and lowered according to the position movement of the weight transfer portion; a weight intermediary portion, which acts as an intermediary between the wire rod and the counterweight stacking portion, and makes the subordinate counterweights different according to the connection state with the counterweight stacking portion; an intermediary pin, which is used to determine the connection state between the weight intermediary portion and the counterweight stacking portion; and a guide roller portion, which provides a moving path for the wire rod when accommodated in the counterweight accommodating portion, and the guide roller portion includes: a first upper roller member, which is arranged on the upper side of the counterweight accommodating portion and is arranged on the same line as the weight intermediary portion; a second upper roller member , the second upper roller is accommodated in the counterweight block accommodating portion, and is arranged adjacent to the first upper roller, and is arranged biased towards the weight transfer portion; and a lower roller, the lower roller is accommodated in the counterweight block accommodating portion, and is arranged on the lower side of the second upper roller, and is arranged adjacent to the weight transfer portion, the weight transfer portion comprises: a transmission rotating shaft, the transmission rotating shaft is rotatably connected to the transmission support portion; and a transmission adjusting member, the transmission adjusting member is linked when connected to the transmission rotating shaft and is rotated by the wire, the transmission adjusting member comprises: a first fan-shaped portion, the first fan-shaped portion is formed in a fan shape; a plurality of first through holes, the plurality of first through holes penetrate the first fan-shaped portion and penetrate at intervals along an arc; a wire fixing portion, the wire fixing portion is formed on one side of the first fan-shaped portion and is fixed with the wire; and a wire guide portion, the wire guide portion guides the wire fixed on the wire fixing portion and is arranged along the outer periphery of the first fan-shaped portion.

[0017] According to an embodiment of the present invention, the motion rotating part of the leg curl machine includes: a connecting rotating shaft, which is formed into concentric multiple stages so as to surround the outer peripheral surface of the transmission rotating shaft, and is rotatably connected with the transmission rotating shaft as a reference; a linkage rod, which is vertically connected to the connecting rotating shaft; an adjusting rotating shaft, which is rotatably connected to the end of the linkage rod; a motion adjusting member, which is formed at the end of the linkage rod; and a motion connecting part, which is connected to the adjusting rotating shaft and provides a space for installing the hanging part, and is detachably connected to the motion adjusting member, and the connecting rotating shaft includes: a bending selection part, which is arranged parallel to the first fan-shaped part, and its end is arranged at the upper part of the multiple first through holes; and a linkage button part, which is formed at the end of the bending selection part, so that when inserted into any one of the multiple first through holes, the insertion from the through hole is released by applying external force. , when the applied external force is released, it is reset and inserted into the opposite through-hole, and the linkage button part changes the angle between the linkage rod and the ground according to the connection position with the first fan-shaped part, thereby changing the height of the hanging part from the ground, the motion adjustment part comprises: a second fan-shaped part, the second fan-shaped part is formed in a fan shape; and a plurality of second through-holes, the plurality of second through-holes pass through the second fan-shaped part and pass through at intervals along an arc, the motion connection part comprises: a motion selection part, the motion selection part is arranged in parallel with the second fan-shaped part, and its end is arranged at the upper part of the plurality of second through-holes; and a motion button part, the motion button part is formed at the end of the motion selection part, so that when inserted into any one of the plurality of second through-holes, the insertion is released from the through-hole by the applied external force, and when the applied external force is released, it is reset and inserted into the opposite through-hole, and the motion button part changes the spacing distance between the hanging part and the body placement part according to the connection position with the second fan-shaped part.

[0018] Effects of the Invention

[0019] According to the present invention, the leg curl machine makes it possible to adjust the weight load and exercise the leg muscles and knee joints according to each user's physical condition, health condition, and required amount of exercise.

[0020] In addition, the present invention not only reduces the manufacturing cost but also facilitates the maintenance of the sports facilities by making the overall structure compact.

[0021] In addition, outdoor sports can be performed according to the sports conditions of users such as men, women, young and old, adults, and the elderly, so that various groups of people can use it. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 1 is a schematic perspective view showing a leg curl machine according to an embodiment of the present invention.

[0023] Figure 2 FIG. 1 is a schematic diagram for explaining a frame portion of a leg curl machine according to an embodiment of the present invention.

[0024] Figure 3 FIG. 1 is a schematic diagram for explaining a placement portion of a leg curl machine according to an embodiment of the present invention.

[0025] Figure 4 FIG. 1 is a schematic diagram for explaining a moving rotating portion of a leg curl machine according to an embodiment of the present invention.

[0026] Figure 5 FIG. 1 is a schematic diagram for explaining a weight portion of a leg curl machine according to an embodiment of the present invention.

[0027] Figure 6 FIG. 1 is a schematic diagram for explaining a weight transfer unit of a leg curl machine according to an embodiment of the present invention.

[0028] (Explanation of Reference Numerals)

[0029] 1: Leg Curl Machine 10: Frame

[0030] 11: Lower support part 13: Counterweight block accommodating part

[0031] 15: Placement support 17: Transfer support

[0032] 19: Movement support part 20: Placement part

[0033] 21: Leg placement part 23: Body placement part

[0034] 25: Arm placement 27: Grip

[0035] 30: Motion rotating part 31: Connecting rotating shaft

[0036] 33: Linkage rod 35: Adjustment of the rotation axis

[0037] 37: Motion adjustment part 38: Suspension part

[0038] 39: Motion connection 40: Weight

[0039] 41: Counterweight stacking part 44: Wire rod

[0040] 45: weight intermediary part 47: intermediary pin

[0041] 49: Guide roller 50: Weight transfer unit

[0042] 51: Transmission rotation shaft 53: Transmission adjustment member DETAILED DESCRIPTION

[0043] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the concept of the present invention is not limited to the embodiments presented. Those skilled in the art who understand the concept of the present invention can easily propose other degenerate inventions or other embodiments within the scope of the concept of the present invention by adding, changing, or deleting other components within the scope of the same concept, and such inventions are also included within the scope of the inventive concept of this application.

[0044] In the drawings of the respective embodiments, components having the same functions and representing the same concept are described using the same reference numerals.

[0045] Figure 1 FIG. 1 is a schematic perspective view showing a leg curl machine according to an embodiment of the present invention.

[0046] Reference Figure 1 According to an embodiment of the present invention, a leg curl machine 1 is an exercise device that allows a user to lift a weight block by raising a lever connected to the weight block while lying on his / her stomach.

[0047] The leg curl machine 1 of the present invention may include a frame portion 10 , a placement portion 20 , a movement rotation portion 30 , a weight portion 40 , and a weight transfer portion 50 .

[0048] The frame portion 10 can stand while being supported by the ground.

[0049] The seating portion 20 is connected to the frame portion 10 and may provide a space where a user can lie prone.

[0050] The moving rotation portion 30 is connected to the frame portion 10 and is disposed adjacent to the seating portion 20 to provide a space for a user lying prone to hang their legs. The moving rotation portion 30 can be rotated by an external force applied by the user.

[0051] The weight portion 40 is supported by the frame portion 10 and can accommodate a plurality of weights.

[0052] The weight transfer part 50 is connected to the frame part 10 , and acts as an intermediary between the moving rotating part 30 and the weight part 40 . The weight transfer part 50 can be linked to the rotation of the moving rotating part 30 to raise or lower the counterweight of the weight part 40 .

[0053] Figure 2 FIG. 1 is a schematic diagram for explaining a frame portion of a leg curl machine according to an embodiment of the present invention.

[0054] Reference Figure 2According to an embodiment of the present invention, the frame portion 10 of the leg curl machine 1 may include a lower support portion 11 , a weight accommodating portion 13 , a placement support portion 15 , a transmission support portion 17 , and a movement support portion 19 .

[0055] The lower support portion 11 may be supported on the ground.

[0056] The weight accommodating portion 13 is disposed behind the seating portion 20 and stands upright from the lower supporting portion 11 . The weight accommodating portion 13 has an accommodating space formed therein to provide a space for accommodating the weight portion 40 .

[0057] The seating support portion 15 stands from the lower support portion 11 and can support the seating portion 20 .

[0058] The transfer support portion 17 stands upright from the lower support portion 11 and is disposed adjacent to the weight accommodating portion 13 to support the weight transfer portion 50 .

[0059] The motion support portion 19 plays an intermediary role between the transmission support portion 17 and the placement support portion 15 , and can support the motion rotation portion 30 .

[0060] The weight receiving portion 13 may include an adjustment opening 131 . The adjustment opening 131 is opened from the front side toward the seating portion 20 , so that at least a portion of the weight portion 40 is exposed to the outside.

[0061] The placement support portion 15 may include a standing support member 151 and an intermediate support member 153 .

[0062] The standing support member 151 can support the leg seating portion 21 .

[0063] One side of the intermediate support member 153 may be connected to the bottom surface of the leg seating portion 21 , and the other side may be connected to the height adjustment portion 251 .

[0064] Figure 3 FIG. 1 is a schematic diagram for explaining a placement portion of a leg curl machine according to an embodiment of the present invention.

[0065] Reference Figure 3 According to an embodiment of the present invention, the placement portion 20 of the leg curl machine 1 may include a leg placement portion 21 , a body placement portion 23 , an arm placement portion 25 and a grip portion 27 .

[0066] The leg resting portion 21 can support the legs of a user lying prone.

[0067] The body resting portion 23 is disposed adjacent to the leg resting portion 21 and can support the torso of a user lying prone.

[0068] The arm resting portion 25 is disposed adjacent to the body resting portion 23 and can support the arms of a user lying prone.

[0069] When the grip portion 27 is connected to the arm rest portion 25 , it can provide a space for the user to grip.

[0070] The leg seating portion 21 and the body seating portion 23 may form a first angle convex upward.

[0071] The leg seating portion 21 has an elastic feel and is formed in a trapezoidal shape with rounded corners. The leg seating portion 21 may be configured such that its width decreases in a direction toward the body seating portion 23 .

[0072] The body seating portion 23 has an elastic feel and is formed in a trapezoidal shape with rounded corners. The body seating portion 23 may be configured such that its width decreases toward the arm seating portion 25 .

[0073] The arm rest portion 25 may include a height adjustment portion 251 , a flat surface providing portion 253 , a first arm support 255 , and a second arm support 257 .

[0074] The height adjustment portion 251 stands from the frame portion 10 and can be connected to the frame portion 10 in a height-adjustable manner based on the frame portion 10 .

[0075] The flat surface providing portion 253 is connected to the upper side of the height adjusting portion 251 to be linked with the height adjusting portion 251 and can provide a flat surface on the upper portion.

[0076] The first arm support 255 is placed on the flat surface providing portion 253 and can support the left arm of a user lying prone.

[0077] The second arm support 257 is placed on the flat surface providing portion 253 and can support the right arm of a user lying prone.

[0078] The gripping portion 27 may include a 1-1 gripping piece 271 , a 1-2 gripping piece 273 , a 2-1 gripping piece 275 , and a 2-2 gripping piece 277 .

[0079] The 1-1 gripping member 271 is formed on the upper surface of the flat surface providing portion 253 and may be disposed in front of the first arm supporting member 255 .

[0080] The first-second gripping member 273 is formed on the upper surface of the flat surface providing portion 253 and may be disposed in front of the second arm supporting member 257 .

[0081] The 2-1st gripping member 275 is formed on the bottom surface of the flat surface providing portion 253 and may be disposed in front of the first arm supporting member 255 .

[0082] The 2-2 gripping member 277 is formed on the bottom surface of the flat surface providing portion 253 and may be disposed in front of the second arm supporting member 257 .

[0083] The 1-1 gripping piece 271 may be composed of a first standing piece 271a and a first bending portion 271b, wherein the first standing piece 271a stands from the flat surface providing portion 253, and the first bending portion 271b is obliquely bent from the upper side of the first standing piece 271a.

[0084] The first-second gripping member 273 may be composed of a second standing member 273a and a second bending portion 273b, wherein the second standing member 273a stands from the flat surface providing portion 253, and the second bending portion 273b is obliquely bent from the upper side of the second standing member 273a.

[0085] The 2-1st gripping piece 275 and the 2-2nd gripping piece 277 are formed in a bar shape and may be arranged to be inclined such that a distance therebetween becomes greater as they go downward.

[0086] The 1-1st gripping member 271 and the 1-2nd gripping member 273 are detachably connected to the flat surface providing portion 253 so as to be detachable from the flat surface providing portion 253 when movement is hindered due to the physique of the user.

[0087] The first arm support 255 and the second arm support 257 have an elastic feel and are formed in a square shape with rounded corners. They can be tilted so that the distance between them becomes greater as the distance from the grip 27 increases.

[0088] The first arm support 255 and the second arm support 257 may be formed of a material having a higher friction coefficient in the center region than in the two side ends.

[0089] Accordingly, the user who places his arms on the first arm support 255 and the second arm support 257 can prevent his arms from slipping during exercise and can exercise stably.

[0090] The height adjustment portion 251 may include a first hollow rod 251 a , a second hollow rod 251 b , and a height adjustment button portion 251 c .

[0091] The first hollow rod 251 a stands from the frame portion 10 and is formed in a cylindrical shape with a hollow interior.

[0092] The second hollow rod 251b is formed into a hollow cylindrical shape, and in a state of forming concentric multiple layers with the first hollow rod 251a, the height from the ground can be adjusted according to whether it is accommodated inside the first hollow rod 251a.

[0093] When the height adjustment button part 251c is installed on the first hollow rod 251a, it is simultaneously inserted into the first hollow rod 251a and the second hollow rod 251b to limit the position movement of the second hollow rod 251b relative to the first hollow rod 251a, or detached from the second hollow rod 251b so that the second hollow rod 251b can move relative to the first hollow rod 251a.

[0094] The second hollow rod 251 b may be formed with a plurality of fastening holes spaced apart in a height direction.

[0095] The height adjustment button portion 251c can be released from the fastening hole by applying an external force when inserted into the fastening hole of the second hollow rod 251b. When the applied external force is released, the height adjustment button portion 251c can be reset and inserted into the opposite fastening hole.

[0096] Figure 4 FIG. 1 is a schematic diagram for explaining a moving rotating portion of a leg curl machine according to an embodiment of the present invention.

[0097] Reference Figure 4 According to an embodiment of the present invention, the motion rotating part 30 of the leg curl machine 1 may include a connecting rotation shaft 31 , a linkage rod 33 , an adjustment rotation shaft 35 , a motion adjusting member 37 and a motion connecting part 39 .

[0098] The connecting rotation shaft 31 is formed in multiple concentric stages so as to surround the outer peripheral surface of the transmission rotation shaft 51 , and can be rotatably connected with respect to the transmission rotation shaft 51 .

[0099] The linkage rod 33 may be vertically connected to the connecting rotation shaft 31 .

[0100] The adjusting rotation shaft 35 may be rotatably connected to a distal end of the linkage rod 33 .

[0101] The motion adjustment member 37 may be formed at a distal end of the linkage rod 33 .

[0102] The motion connection portion 39 is connected to the adjustment rotation shaft 35 , provides a space for mounting the hanging portion 38 , and can be detachably connected to the motion adjustment member 37 .

[0103] The connecting rotating shaft 31 may include a bending selection portion 311 and a linkage button portion 313 .

[0104] The bending selection portion 311 is arranged in parallel with the first fan-shaped portion 531 , and a distal end thereof may be arranged above the plurality of first through holes.

[0105] The linkage button portion 313 is formed at the end of the bending selection portion 311, so that when inserted into any one of the multiple first through holes, it can be released from the through hole by applying external force. When the applied external force is released, it can be reset and inserted into the opposite through hole.

[0106] The linkage button portion 313 can change the angle formed between the linkage rod 33 and the ground according to the connection position with the first sector portion 531 , thereby changing the height of the hanging portion 38 from the ground.

[0107] Specifically, the linkage button portion 313 can adjust the knee height according to the user's body shape or physical condition. A user who cannot normally extend their knees may find it difficult to hang their legs from the hanging portion 38 when lying prone. In this case, the user can raise the hanging portion 38 to exercise.

[0108] The motion adjustment member 37 may include a second sector portion 371 and a plurality of second through holes.

[0109] The second sector portion 371 may be formed in a sector shape.

[0110] The plurality of second through holes penetrate the second sector portion 371 and may be spaced apart along an arc.

[0111] The motion connection portion 39 may include a motion selection portion 391 and a motion button portion 393 .

[0112] The motion selection portion 391 is arranged in parallel with the second sector portion 371 , and a distal end thereof may be arranged above the plurality of second through holes.

[0113] The motion button portion 393 is formed at the end of the motion selection portion 391, so that when inserted into any one of the multiple second through holes, it can be released from the through hole by applying external force. When the applied external force is released, it can be reset and inserted into the opposite through hole.

[0114] The movement button portion 393 can change the spacing distance between the hanging portion 38 and the body seating portion 23 according to the connection position with the second fan-shaped portion 371 .

[0115] Specifically, the exercise button portion 393 can change the distance between the hanging portion 38 and the body rest portion 23 according to the user's body shape. The shorter the height, the shorter the distance between the leg rest portion 21 and the body rest portion 23 can be when exercising.

[0116] Figure 5 FIG. 1 is a schematic diagram for explaining a weight portion of a leg curl machine according to an embodiment of the present invention.

[0117] Reference Figure 5 The weight portion 40 of the leg curl machine 1 according to an embodiment of the present invention may include a weight stacking portion 41 , a wire 44 , a weight intermediary portion 45 , an intermediary pin 47 , and a guide roller portion 49 .

[0118] The weight stacking portion 41 may be formed by stacking a plurality of separable weights while being accommodated in the weight accommodation portion 13 .

[0119] One side of the wire 44 is connected to the weight transfer part 50 , and the other side is connected to the counterweight stacking part 41 , so that the counterweight stacking part 41 can be raised or lowered according to the position movement of the weight transfer part 50 .

[0120] The weight intermediary portion 45 plays an intermediary role between the wire 44 and the weight stacking portion 41 , and can make the subordinate weights different depending on the connection state with the weight stacking portion 41 .

[0121] The intermediary pin 47 can be used to determine the connection state between the weight intermediary portion 45 and the counterweight stacking portion 41 .

[0122] The guide roller portion 49 may provide a moving path for the wire 44 when the wire 44 is accommodated in the weight accommodation portion 13 .

[0123] The guide roller unit 49 may include a first upper roller 491 , a second upper roller 492 , and a lower roller 495 .

[0124] The first upper roller 491 is disposed on the upper side of the weight accommodating portion 13 and can be disposed on the same line as the weight intermediary portion 45 .

[0125] The second upper roller 492 is accommodated in the weight accommodation portion 13 and is disposed adjacent to the first upper roller 491 and may be disposed toward the weight transfer portion 50 .

[0126] The lower roller 495 is accommodated in the weight accommodation portion 13 and is disposed on a lower side of the second upper roller 492 , and may be disposed adjacent to the weight transfer portion 50 .

[0127] The guide roller portion 49 can improve the transmission efficiency of the external force by maintaining elasticity of the wire 44 from the weight stacking portion 41 to the weight transmitting portion 50 without being tangled.

[0128] Figure 6 FIG. 1 is a schematic diagram for explaining a weight transfer unit of a leg curl machine according to an embodiment of the present invention.

[0129] Reference Figure 6 According to an embodiment of the present invention, the weight transfer unit 50 of the leg curl machine 1 may include a transfer rotation shaft 51 and a transfer adjustment member 53 .

[0130] The transmission rotation shaft 51 may be rotatably connected to the transmission support portion 17 .

[0131] The transmission adjustment member 53 is connected to the transmission rotation shaft 51 and can be rotated by the wire 44 .

[0132] The transmission adjustment member 53 may include a first sector portion 531 , a plurality of first through holes, a wire fixing portion 535 , and a wire guiding portion 537 .

[0133] The first sector portion 531 may be formed in a sector shape.

[0134] The plurality of first through holes penetrate the first sector portion 531 and may be spaced apart along an arc.

[0135] The wire fixing portion 535 may be formed on one side of the first sector portion 531 to fix the wire 44 .

[0136] The wire guide portion 537 can guide the wire 44 fixed to the wire fixing portion 535 to be arranged along the outer circumference of the first sector portion 531 .

[0137] When the wire 44 is wound or unwound along the outer circumference of the first sector-shaped portion 531 , the wire guide 537 can prevent the wire 44 from being separated from the first sector-shaped portion 531 .

[0138] While the above description of the configuration and features of the present invention is based on the embodiments of the present invention, the present invention is not limited thereto. Various modifications and variations are possible within the spirit and scope of the present invention, as will be apparent to those skilled in the art. Therefore, such modifications and variations are intended to fall within the scope of the appended claims.

Claims

1. A leg curl machine, wherein a user can lift a weight block by raising a lever connected to the weight block while lying prone, characterized in that: include: a frame portion that stands while being supported by the ground; a seating portion connected to the frame portion and providing a space in which a user can lie prone; a motion rotating portion connected to the frame portion and arranged adjacent to the seating portion to provide a space for a prone user to hang their legs, and rotated by an external force applied by the user; a weight portion supported by the frame portion and accommodating a plurality of counterweights; and The weight transfer part is connected to the frame part, plays an intermediary role between the motion rotation part and the weight part, and is linked with the rotation of the motion rotation part to lift the counterweight block of the weight part.

2. The leg curl machine according to claim 1, wherein The placement unit has: a leg rest portion for supporting the legs of a prone user; a body rest portion, the body rest portion being arranged adjacent to the leg rest portion and supporting the torso of a prone user; an arm resting portion, the arm resting portion being arranged adjacent to the body resting portion and capable of supporting the arms of a prone user; and A grip portion, which provides a space for the user to grip when connected to the arm rest portion. The leg placement portion and the body placement portion form a first angle convex upward, The leg seating portion has an elastic feel and is formed into a trapezoidal shape with rounded corners, and is configured so that the width decreases in a direction toward the body seating portion. The body rest portion has an elastic feel and is formed into a trapezoidal shape with rounded corners, and is configured so that the width decreases in a direction toward the arm rest portion. The arm placement portion includes: a height adjustment portion, the height adjustment portion standing from the frame portion and connected to the frame portion in a height-adjustable manner; a flat surface providing portion connected to an upper side of the height adjusting portion so as to be linked with the height adjusting portion and providing a flat surface on an upper portion; a first arm support member disposed on the flat surface providing portion and supporting the left arm of a prone user; and The second arm support is placed on the flat surface providing portion and supports the right arm of the user who is lying prone.

3. The leg curl machine according to claim 2, wherein: The grip portion comprises: a 1-1 gripping member formed on the upper surface of the flat surface providing portion and arranged on the front side of the first arm supporting member; a first-second gripping member formed on the upper surface of the flat surface providing portion and arranged on the front side of the second arm supporting member; a 2-1st gripping member formed on a bottom surface of the flat surface providing portion and disposed on a front side of the first arm supporting member; and a 2-2 gripping member formed on the bottom surface of the flat surface providing portion and arranged on the front side of the second arm supporting member; The 1-1 gripping member is composed of a first standing member and a first bending portion, wherein the first standing member stands from the flat surface providing portion, and the first bending portion is obliquely bent from the upper side of the first standing member. The first-second gripping member is composed of a second standing member and a second bending portion, wherein the second standing member stands from the flat surface providing portion, and the second bending portion is obliquely bent from the upper side of the second standing member. The 2-1st grip and the 2-2nd grip are formed in a rod shape and are arranged to be inclined such that a distance therebetween becomes greater as they go downward.

4. The leg curl machine according to claim 3, wherein: The first arm support and the second arm support have an elastic feel and are formed in a square shape with rounded corners. They are arranged to be inclined so that the distance between them becomes greater as the distance from the grip portion increases. The first arm support and the second arm support are formed of a material having a higher friction coefficient in the center region than in the two side ends. The height adjustment unit includes: a first hollow rod standing from the frame portion and formed in a cylindrical shape with a hollow interior; a second hollow rod, the second hollow rod being formed into a hollow cylindrical shape and being configured to form multiple concentric layers with the first hollow rod, the height of the second hollow rod from the ground being adjusted according to whether the second hollow rod is accommodated inside the first hollow rod; and A height adjustment button portion, which, when mounted on the first hollow rod, is inserted into the first hollow rod and the second hollow rod simultaneously to restrict the second hollow rod from moving relative to the first hollow rod, or is detached from the second hollow rod to allow the second hollow rod to move relative to the first hollow rod. The second hollow rod is formed with a plurality of fastening holes spaced apart in the height direction. The height adjustment button is released from the fastening hole by an applied external force when inserted into the fastening hole of the second hollow rod, and is restored to be inserted into the opposite fastening hole when the applied external force is released.

5. The leg curl machine according to claim 4, wherein: The frame portion includes: a lower support portion, the lower support portion being supported on the ground; a counterweight accommodating portion, the counterweight accommodating portion being arranged behind the placement portion, standing from the lower support portion, and forming an accommodating space therein to provide a space for accommodating the weight portion; a placement support portion standing from the lower support portion and supporting the placement portion; a transfer support portion standing from the lower support portion and arranged adjacent to the counterweight accommodating portion to support the weight transfer portion; and a motion support portion, which acts as an intermediary between the transmission support portion and the placement support portion and supports the motion rotation portion; The counterweight accommodating portion includes an adjustment opening portion, which opens from the front toward the placement portion so that at least a portion of the weight portion is exposed to the outside. The placement support portion comprises: a standing support member, the standing support member supporting the leg placement portion; and An intermediate support member has one side connected to the bottom surface of the leg seating portion and the other side connected to the height adjustment portion.

6. The leg curl machine according to claim 5, wherein: The weight portion includes: a counterweight stacking portion, the counterweight stacking portion being formed by stacking a plurality of counterweights that are separable from each other when accommodated in the counterweight accommodation portion; a wire having one side connected to the weight transfer portion and the other side connected to the counterweight stacking portion, so as to raise or lower the counterweight stacking portion according to the position movement of the weight transfer portion; a weight intermediary portion, the weight intermediary portion acting as an intermediary between the wire and the counterweight stacking portion, and making the subordinate counterweight different depending on the connection state with the counterweight stacking portion; an intermediate pin, the intermediate pin being used to determine the connection state between the weight intermediate portion and the counterweight stacking portion; and a guide roller portion, wherein the guide roller portion provides a moving path for the wire rod when the guide roller portion is accommodated in the counterweight accommodating portion; The guide roller portion includes: a first upper roller member, the first upper roller member being arranged on an upper side within the counterweight accommodating portion and being arranged on the same line as the weight intermediary portion; a second upper roller member accommodated in the counterweight accommodating portion and disposed adjacent to the first upper roller member and offset toward the weight transfer portion; and a lower roller member housed in the counterweight housing portion and disposed on a lower side of the second upper roller member and adjacent to the weight transfer portion; The weight transfer unit includes: a transmission rotation shaft rotatably connected to the transmission support portion; and a transmission regulating member, which is linked to the transmission rotating shaft and rotated by the wire rod; The transmission adjustment member comprises: a first sector portion, the first sector portion being formed in a sector shape; a plurality of first through holes, the plurality of first through holes penetrating the first sector portion and being spaced apart along an arc; a wire fixing portion, the wire fixing portion being formed on one side of the first sector portion and fixing the wire; and The wire guide portion guides the wire fixed to the wire fixing portion and is arranged along the outer periphery of the first sector portion.

7. The leg curl machine according to claim 6, wherein: The moving rotating part has: a connecting rotating shaft formed in multiple concentric layers so as to surround the outer peripheral surface of the transmitting rotating shaft and rotatably connected with respect to the transmitting rotating shaft; A linkage rod, the linkage rod being vertically connected to the connecting rotation shaft; an adjusting rotating shaft, the adjusting rotating shaft being rotatably connected to a distal end of the linkage rod; a motion adjusting member formed at a distal end of the linkage rod; and a motion connection portion connected to the adjustment rotation shaft and providing a space for installing a hanging portion capable of hanging a user's legs, and detachably connected to the motion adjustment member; The connecting rotating shaft has: a bending selection portion, the bending selection portion being arranged in parallel with the first fan-shaped portion, and having a terminal end arranged above the plurality of first through holes; and A linkage button portion is formed at the end of the bent selection portion, so that when the linkage button portion is inserted into any one of the plurality of first through holes, the linkage button portion is released from the through hole by applying an external force, and when the applied external force is released, the linkage button portion is reset and inserted into the opposite through hole. The linkage button portion causes the angle formed between the linkage rod and the ground to change according to the connection position with the first sector portion, thereby causing the height of the hanging portion from the ground to change. The motion adjustment member has: a second sector-shaped portion, the second sector-shaped portion being formed in a sector shape; and a plurality of second through holes, the plurality of second through holes penetrating the second sector portion and being spaced apart along an arc; The motion connection portion comprises: a motion selection portion, the motion selection portion being arranged in parallel with the second fan-shaped portion, and having a distal end arranged above the plurality of second through holes; and A motion button portion is formed at the end of the motion selection portion, so that when inserted into any one of the plurality of second through holes, the motion button portion is released from the through hole by an applied external force, and when the applied external force is released, the motion button portion is reset and inserted into the opposite through hole. The movement button portion changes the spacing distance between the hanging portion and the body seating portion according to the connection position with the second sector portion.

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