Leg extension machine

Abstract

According to one embodiment of the present invention, a leg extension machine includes: a frame part, which stands in a state supported by the ground; a placement part, which is connected to the frame part and provides a space for a user to sit, and can adjust the standing angle and height; a motion rotating part, which is connected to the frame part and is arranged adjacent to the placement part to provide a space for a seated user to hang his legs, 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 counterweights; and a weight transfer part, which is connected to the frame part and acts as an intermediary between the motion rotating part and the weight part, and is linked to the rotation of the motion rotating part to raise and lower the counterweights of the weight part.

Description

Technical Field

[0001] The present invention relates to a leg extension machine, and more specifically, to a leg extension machine in which a user can lift a counterweight block by lifting a lever connected to the counterweight block while sitting, and the leg extension machine can be used not only according to the length of the user's legs but also according to the thickness of the legs. Background Art

[0002] In recent years, due to the trend of self-management from the perspective of preventing obesity and adult diseases, most people, regardless of age or gender, are enjoying various sports. Although there are many types of such sports, recently many people have registered at fitness clubs and exercise.

[0003] Many people go to fitness clubs to exercise because there are a variety of exercise equipment, and the weight load of muscle exercise can be adjusted appropriately according to their physical condition and exercise volume. In addition, fitness clubs have the advantage of allowing exercise to be carried out regardless of season, weather and time.

[0004] Generally, the exercises performed in fitness clubs can be roughly divided into aerobic exercises and equipment exercises, which can be 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 lower body muscle exercise include a leg curl machine, a leg extension machine, an air walker, and the like.

[0006] The existing leg stretching machine can only correspond to the user's leg length by adjusting the position of the placement part, but does not take into account the various thicknesses of the thighs, so it is inconvenient to use.

[0007] Therefore, it is necessary to develop a leg stretching machine that can be used not only according to the user's leg length but also according to the thickness of the legs.

[0008] (Prior art literature)

[0009] (Patent Document)

[0010] (Patent Document 1) Korean Utility Model No. 20-0453493 Summary of the invention

[0011] Technical issues to be solved

[0012] The object of the present invention is to provide a leg extension machine which allows a user to exercise by lifting a lever connected to a counterweight while sitting, and which can be used not only according to the length of the user's legs but also according to the thickness of the legs.

[0013] In addition, an object of the present invention is to provide a leg extension machine which has a compact overall structure, thereby not only reducing manufacturing costs but also facilitating maintenance of the exercise facility.

[0014] Solutions to the problem

[0015] The leg extension machine according to an embodiment of the present invention may include: a frame portion 10, the frame portion 10 standing in a state supported by the ground; a placement portion 20, the placement portion 20 is connected to the frame portion 10 and provides a space for a user to sit, and can adjust the standing angle and height; a motion rotating portion 30, the motion rotating portion 30 is connected to the frame portion 10, and is adjacent to the placement portion 20 to provide a space for a seated user to hang his legs, and is rotated by an external force applied by the user; a weight portion 40, the weight portion 40 is supported by the frame portion 10 and accommodates a plurality of counterweights; and a weight transfer portion 50, the weight transfer portion 50 is connected to the frame portion 10, and is disposed in the motion rotating portion 30. The rotating part 30 acts as an intermediary between the weight part 40, and is linked to the rotation of the moving rotating part 30 to raise and lower the counterweight block of the weight part 40. The placement part 20 may include: a buttocks placement part 21, which supports the buttocks of a seated user; a back placement part 23, which supports the back of a seated user; a placement angle adjustment part 25, which is connected to the frame part 10 and the back placement part 23 to adjust the angle of the back placement part 23; and a plurality of gripping parts 27, which are arranged parallel to the buttocks placement part 21 when connected to both sides of the buttocks placement part 21 so that the user can hold it.

[0016] In addition, the frame portion 10 according to an embodiment of the present invention may include: a lower support portion 11, which is supported on the ground; a counterweight accommodating portion 13, which is arranged at the rear of the placement portion 20 and stands from the lower support portion 11, and forms an accommodating space therein to provide a space for accommodating the weight portion 40; a placement support portion 15, which stands from the lower support portion 11 and supports the placement portion 20; a transfer support portion 17, which stands from the lower support portion 11 and is arranged adjacent to the counterweight accommodating portion 13 to support the weight transfer portion 50; and a motion support portion 19, which acts as an intermediary between the transfer support portion 17 and the placement support portion 15, and supports the motion rotation Part 30, the placement support portion 15 may include: a pair of placement supports 151, the pair of placement supports 151 supporting the buttocks placement portion 21; a pair of bending supports 153, the pair of bending supports 153 extending from a first point of the pair of placement supports 151; a rotation support 155, the rotation support 155 plays an intermediary role between the pair of placement supports 151 and the back placement portion 23, and is provided with a plurality of rotation links 1551 in the space between the pair of placement supports 151 so that the back placement portion 23 can rotate; and a placement height adjustment portion 157, one end link of the placement height adjustment portion 157 is connected to a point of the lower support portion 11, and the other end link is connected to the pair of bending supports 153, and the height of the pair of bending supports 153 can be adjusted.

[0017] In addition, the placement angle adjustment portion 25 according to an embodiment of the present invention may include: an angle adjustment plate 251, which operates in conjunction with the back placement portion 23 when fixed to a rotating link 1551 and is formed in a fan shape; a plurality of angle adjustment holes 253, which penetrate the angle adjustment plate 251 and are spaced apart along an arc; a fixing rod module 255, which is coupled to a second point of the placement support 151 and is inserted into at least one of the plurality of angle adjustment holes 253 to fix the angle of the back placement portion 23; and a damper 257, which acts as an intermediary between a third point of the placement support 151 and a point of the angle adjustment plate 251, and when the fixing of the fixing rod module 255 is released, the angle adjustment plate 251 is pulled toward the third point of the placement support 151.

[0018] In addition, the weight portion 40 according to an embodiment of the present invention may include: a counterweight stacking portion 41, which is formed by stacking a plurality of counterweights that can be separated from each other in a state where the counterweight stacking portion 41 is accommodated in the counterweight accommodating portion 13; a wire 43, one side of the wire 43 is connected to the weight transfer portion 50, and the other side is connected to the counterweight stacking portion 41, so that the counterweight stacking portion 41 is raised and lowered according to the position movement of the weight transfer portion 50; a weight intermediary portion 45, which acts as an intermediary between the wire 43 and the counterweight stacking portion 41, and is connected to the counterweight stacking portion 41 according to the position movement of the weight transfer portion 50. The connection state of the counterweight stacking part 41 makes the subordinate counterweight different; an intermediate pin 47, the intermediate pin 47 is used to determine the connection state of the weight intermediary part 45 and the counterweight stacking part 41; and a guide roller part 49, the guide roller part 49 provides a moving path for the wire 43 when it is accommodated in the counterweight accommodating part 13, and the guide roller part 49 may include: a first upper roller member 491, the first upper roller member 491 is arranged on the upper side of the counterweight accommodating part 13, and is arranged on the same line as the weight intermediary part 45; a second upper roller member 492, the second upper roller member The weight transfer unit 50 includes a first roller 492 which is accommodated in the weight accommodating portion 13 and is disposed adjacent to the first upper roller 491 and is disposed toward the weight transfer unit 50; and a lower roller 495 which is accommodated in the weight accommodating portion 13 and is disposed on the lower side of the second upper roller 492 and is disposed adjacent to the weight transfer unit 50. The weight transfer unit 50 may include: a transfer rotating shaft 51 which is rotatably connected to the transfer supporting portion 17; and a transfer adjusting plate 53 which is rotatably connected to the transfer rotating shaft 51. The transfer adjustment plate 53 is linked in a state and is rotated by the wire 43. The transfer adjustment plate 53 may include: a first fan-shaped portion 531, which is formed in a fan shape; a plurality of first through holes 533, which penetrate the first fan-shaped portion 531 and are spaced apart along an arc; a wire fixing portion 535, which is formed on one side of the first fan-shaped portion 531 to fix the wire 43; and a wire guide portion 537, which guides the wire 43 fixed on the wire fixing portion 535 to be arranged along the outer peripheral edge of the first fan-shaped portion 531.

[0019] In addition, the motion rotating part 30 according to an embodiment of the present invention may include: a connecting rotating shaft 31, the connecting rotating shaft 31 is formed in a concentric multi-stage so as to surround the outer peripheral surface of the transmission rotating shaft 51, and is rotatably connected with the transmission rotating shaft 51 as a reference; a linkage rod 33, the linkage rod 33 is vertically connected to the connecting rotating shaft 31; an adjustment rotating shaft 35, the adjustment rotating shaft 35 is rotatably connected to the end of the linkage rod 33; a motion adjusting plate 37, the motion adjusting plate 37 is formed at the end of the linkage rod 33; and a motion connecting part 39, the motion connecting part 39 is connected to The connecting rotating shaft 31 is connected to the adjusting rotating shaft 35 and provides a space for installing a hanging part 38 for the user to hang the legs, and is connected to the movement adjusting plate 37 in a detachable manner. The connecting rotating shaft 31 may include: a bending selection part 311, which is arranged in parallel with the first fan-shaped part 531, and its end is arranged at the upper part of the plurality of first through holes 533; and a linkage button part 313, which is formed at the end of the bending selection part 311, so that when inserted into any one of the plurality of first through holes 533, the linkage button part 313 is released from the through hole by an applied external force. Insertion, when the applied external force is released, it is reset and inserted into the opposite through hole, the linkage button part 313 makes the angle formed by the linkage rod 33 and the ground change according to the connection position of the linkage button part 313 and the first fan-shaped part 531, so that the height of the hanging part 38 from the ground changes, the motion adjustment plate 37 may include: a second fan-shaped part 371, the second fan-shaped part 371 is formed in a fan shape; and a plurality of second through holes 373, the plurality of second through holes 373 are connected along an arc spaced apart, the motion connection part may include: a motion selection part 391, the motion selection part 391 It is arranged in parallel with the second fan-shaped portion 371, and its end is arranged at the upper part of the multiple second through holes 373; and a motion button portion 393, 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 373, it 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 portion 393 makes the spacing distance between the hanging portion 38 and the placement portion 20 change according to the connection position of the motion button portion 393 and the second fan-shaped portion 371.

[0020] Effects of the Invention

[0021] The leg extension machine according to one embodiment of the present invention has the effect that the user can lift the counterweight block to exercise by raising the lever connected to the counterweight block while sitting, and can be used not only according to the length of the user's legs, but also according to the thickness of the legs.

[0022] In addition, the leg extension machine according to an embodiment of the present invention has a compact overall structure, which not only reduces manufacturing costs but also facilitates maintenance of the exercise facility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 2 is a diagram showing a leg extension machine according to an embodiment of the present invention.

[0024] Figure 2 is a diagram showing a frame portion according to an embodiment of the present invention.

[0025] Figure 3 FIG. 1 is a diagram showing a placement support portion according to an embodiment of the present invention.

[0026] Figure 4 FIG. 1 is a diagram showing a seating portion according to an embodiment of the present invention.

[0027] Figure 5 FIG. 1 is a diagram showing a placement angle adjustment portion according to an embodiment of the present invention.

[0028] Figure 6 FIG. 1 is a diagram showing a moving rotating part according to an embodiment of the present invention.

[0029] Figure 7 is a diagram showing a weight portion according to an embodiment of the present invention.

[0030] Figure 8 FIG. 1 is a diagram showing a weight transfer unit according to an embodiment of the present invention.

[0031] Fig. 9 3 is a comparison diagram of adjusting the angle and height of the leg extension machine according to an embodiment of the present invention.

[0032] (Explanation of Reference Numerals)

[0033] 1: Leg extension machine

[0034] 10: Framework

[0035] 20: Resettlement Department

[0036] 30: Motion rotating part

[0037] 40: Weight

[0038] 50: Weight transfer unit DETAILED DESCRIPTION

[0039] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the concept of the present invention is not limited to the proposed embodiments, and those skilled in the art who understand the concept of the present invention can easily propose other degenerate inventions or other embodiments included in the scope of the concept of the present invention by adding, changing, or deleting other constituent elements within the same concept, but this is also included in the scope of the invention concept of this application.

[0040] Below, we will refer to the attached Figures 1 to 8 The leg extension machine 1 of the present invention will be described in detail.

[0041] Figure 1 2 is a diagram showing a leg extension machine according to an embodiment of the present invention.

[0042] refer to Figure 1 The leg extension machine 1 according to an embodiment of the present invention may include a frame portion 10 , a placement portion 20 , a motion rotation portion 30 , a weight portion 40 and a weight transfer portion 50 .

[0043] The frame portion 10 can stand in a state supported by the ground. Figure 2 Let us look at the frame portion 10 in more detail.

[0044] Figure 2 is a diagram showing a frame portion according to an embodiment of the present invention.

[0045] refer to Figure 2 According to an embodiment of the present invention, the frame portion 10 may include a lower support portion 11 , a weight accommodating portion 13 , a placement support portion 15 and a transfer support portion 17 .

[0046] The lower support portion 11 may be supported on the ground.

[0047] The weight accommodating portion 13 is disposed at the rear of the placement portion 20 and stands from the lower support portion 11, and a storage space is formed therein to provide a space for accommodating the weight portion 40. The weight accommodating portion 13 may include an adjustment opening 131, which is opened from the front of the placement portion 20, so that at least a portion of the weight portion 40 is exposed to the outside.

[0048] The placement support portion 15 stands from the lower support portion 11 and can support the placement portion 20. Figure 3 Let's look at the placement support 15 in more detail.

[0049] Figure 3 FIG. 1 is a diagram showing a placement support portion according to an embodiment of the present invention.

[0050] refer to Figure 3According to an embodiment of the present invention, the seating support portion 15 may include a pair of seating supports 151 , a pair of bending supports 153 , a rotation support 155 and a seating height adjustment portion 157 .

[0051] A pair of seating supports 151 may support the buttocks seating portion 21 .

[0052] A pair of curved supports 153 may extend from a first point of the pair of seating supports 151 .

[0053] The rotation support 155 plays an intermediary role between the pair of seating supports 151 and the back seating portion 23 , and may include a plurality of rotation links 1551 in the space between the pair of seating supports 151 so that the back seating portion 23 can rotate.

[0054] One end of the connecting rod of the placement height adjustment part 157 is coupled to a point of the lower support part 11, and the other end of the connecting rod is coupled to the pair of curved support members 153, and can be configured to adjust the height of the pair of curved support members 153. The placement height adjustment part 157 can be composed of two rods and a height adjustment button part. In order to facilitate the height adjustment of the placement height adjustment part 157, a height adjustment grip 159 can be provided at a point of the curved support member 153. By providing the placement height adjustment part 157, it is possible to adjust the angle of the hip placement part 21 by adjusting the height of one side of the hip placement part 21.

[0055] Reference again Figure 2 The transfer support portion 17 stands from the lower support portion 11 and is arranged adjacent to the counterweight block accommodating portion 13 to support the weight transfer portion 50 .

[0056] Reference again Figure 1 The seating portion 20 is connected to the frame portion 10 and provides a space where a user can sit, and can be configured to be able to adjust the standing angle and height. Figure 4 Let's look at the seating portion 20 in more detail.

[0057] Figure 4 FIG. 1 is a diagram showing a seating portion according to an embodiment of the present invention.

[0058] refer to Figure 4 According to an embodiment of the present invention, the seating portion 20 may include a buttocks seating portion 21 , a back seating portion 23 , a seating angle adjustment portion 25 and a pair of gripping portions 27 .

[0059] The buttocks seating portion 21 can support the buttocks of a seated user.

[0060] The back rest portion 23 may support the back of a seated user.

[0061] The seating angle adjustment portion 25 is connected to the frame portion 10 and the back seating portion 23 so as to adjust the angle of the back seating portion 23. Figure 5 The placement angle adjustment portion 25 is described in more detail.

[0062] Figure 5 FIG. 1 is a diagram showing a placement angle adjustment portion according to an embodiment of the present invention.

[0063] refer to Figure 5 According to an embodiment of the present invention, the placement angle adjustment portion 25 may include an angle adjustment plate 251 , a plurality of angle adjustment holes 253 , a fixing rod module 255 and a damper 257 .

[0064] The angle adjustment plate 251 is fixed to the rotation link 1551 and operates in conjunction with the back seating portion 23 , and may be formed in a fan shape.

[0065] A plurality of angle adjustment holes 253 penetrate the angle adjustment plate 251 and may be spaced apart along an arc.

[0066] The fixing rod module 255 is coupled to a second point of the seating support 151 , and may be inserted into at least one of the plurality of angle adjustment holes 253 to fix the angle of the back seating portion 23 .

[0067] The damper 257 plays an intermediary role between the third point of the mounting support 151 and one point of the angle adjustment plate 251 , and when the fixing rod module 255 is released, the angle adjustment plate 251 can be pulled toward the third point of the mounting support 151 .

[0068] Reference again Figure 4 A pair of gripping portions 27 may be arranged parallel to the buttocks seating portion 21 while being connected to both sides of the buttocks seating portion 21 so that the user can grip it.

[0069] Reference again Figure 1 The moving rotating part 30 is connected to the frame part 10 and is arranged adjacent to the seating part 20 to provide a space for the seated user to hang his legs, and can be rotated by an external force applied by the user. Figure 6 Let us now look at the kinematic rotating part 30 in more detail.

[0070] Figure 6 FIG. 1 is a diagram showing a moving rotating part according to an embodiment of the present invention.

[0071] refer to Figure 6According to an embodiment of the present invention, the motion rotating part 30 may include a connecting rotating shaft 31, a linkage rod 33, an adjusting rotating shaft 35, a motion adjusting plate 37 and a motion connecting part 39.

[0072] The connection rotation shaft 31 is formed in multiple concentric stages so as to surround the outer circumference of the transmission rotation shaft 51 and can be rotatably connected with respect to the transmission rotation shaft 51. The connection rotation shaft 31 may include a bending selection portion 311 and a linkage button portion 313.

[0073] The bending selection portion 311 is arranged in parallel with the first sector portion 531 , and a distal end thereof may be arranged on the upper portion of the plurality of first through holes 533 .

[0074] 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 plurality of first through holes 533, the insertion is released from the through hole by an applied external force, and when the applied external force is released, the linkage button portion 313 can reset and insert into the opposite through hole. The linkage button portion 313 can change the angle formed by the linkage rod 33 and the ground according to the connection position of the linkage button portion 313 and the first fan-shaped portion 531, thereby changing the height of the hanging portion 38 from the ground.

[0075] Specifically, the linkage button portion 313 can adjust the height of the knee to match the user's body shape or physical condition. A user who cannot perform normal knee extension may find it difficult to hang his legs on the hanging portion 38 in a prone position. In this case, the height of the hanging portion 38 can be raised for exercise.

[0076] The linkage rod 33 may be vertically connected to the connecting rotation shaft 31 .

[0077] The adjustment rotation shaft 35 may be rotatably connected to a distal end of the linkage rod 33 .

[0078] The motion adjustment plate 37 may be formed at the end of the linkage rod 33. The motion adjustment plate 37 may include a second sector portion 371 formed in a sector shape and a plurality of second through holes 373 spaced apart along an arc.

[0079] The motion connection part 39 is connected to the adjustment rotation shaft 35, and provides a space for installing the hanging part 38 for the user to hang the leg, and can be connected to the motion adjustment plate 37 in a detachable manner. The motion connection part may include: a motion selection part 391, which is arranged in parallel with the second fan-shaped part 371, and its end can be arranged on the upper part of the plurality of second through holes 373; and a motion button part 393, which is formed at the end of the motion selection part 391, so that when inserted into any one of the plurality of second through holes 373, the insertion is released from the through hole by the applied external force, and when the applied external force is released, it can be reset and inserted into the opposite through hole. The motion button part 393 can change the spacing distance between the hanging part 38 and the placement part 20 according to the connection position of the motion button part 393 and the second fan-shaped part 371.

[0080] Reference again Figure 1 The weight portion 40 is supported by the frame portion 10 and can accommodate a plurality of weight blocks. Figure 7 The weight portion 40 will be described in more detail.

[0081] Figure 7 is a diagram showing a weight portion according to an embodiment of the present invention.

[0082] refer to Figure 7 According to an embodiment of the present invention, the weight portion 40 may include a weight stacking portion 41 , a wire 43 , a weight intermediary portion 45 , an intermediary pin 47 , and a guide roller portion 49 .

[0083] The weight stacking portion 41 may be formed by stacking a plurality of weights that are separable from each other in a state where the weights are accommodated in the weight accommodation portion 13 .

[0084] One side of the wire 43 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 .

[0085] The weight intermediary portion 45 plays an intermediary role between the wire 43 and the weight stacking portion 41 , and can make the subordinate weight different depending on the connection state with the weight stacking portion 41 .

[0086] The intermediate pin 47 can be used to determine the connection state between the weight intermediate part 45 and the counterweight stacking part 41 .

[0087] The guide roller portion 49 may provide a moving path for the wire 43 when the wire 43 is accommodated in the weight accommodation portion 13 .

[0088] The guide roller portion 49 may include a first upper roller 491 , a second upper roller 492 , and a lower roller 495 .

[0089] The first upper roller member 491 is disposed on the upper side of the weight accommodation portion 13 , and may be disposed on the same line as the weight intermediary portion 45 .

[0090] 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 biased toward the weight transfer portion 50 .

[0091] The lower roller member 495 is accommodated in the weight accommodation portion 13 and is disposed at a lower side of the second upper roller member 492 , and may be disposed adjacent to the weight transfer portion 50 .

[0092] The guide roller portion 49 can improve the transmission efficiency of the external force by maintaining elastic force without tangling the wire 43 from the weight stacking portion 41 to the weight transmitting portion 50 .

[0093] Reference again Figure 1 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, and is linked to the rotation of the moving rotating part 30 to make the counterweight of the weight part 40 rise and fall. Figure 8 Let's look at the weight transfer portion 50 in more detail.

[0094] Figure 8 FIG. 1 is a diagram showing a weight transfer unit according to an embodiment of the present invention.

[0095] refer to Figure 8 According to an embodiment of the present invention, the weight transfer part 50 may include a transfer rotation shaft 51 and a transfer adjustment plate 53 .

[0096] The transmission rotation shaft 51 may be rotatably connected to the transmission support portion 17 .

[0097] The transmission adjustment plate 53 is linked to the transmission rotation shaft 51 and can be rotated by the wire 43 .

[0098] The transmission adjustment plate 53 may include a first fan-shaped portion 531 , a plurality of first through holes, a wire fixing portion 535 , and a wire guiding portion 537 .

[0099] The first sector portion 531 may be formed in a sector shape.

[0100] A plurality of first through holes penetrate the first sector portion 531 and may be spaced apart along an arc.

[0101] The wire fixing portion 535 may be formed at one side of the first sector portion 531 to fix the wire 43 .

[0102] The wire guide portion 537 can guide the wire 43 fixed to the wire fixing portion 535 to be arranged along the outer circumference of the first fan-shaped portion 531 .

[0103] When the wire 43 is wound or unwound along the outer circumference of the first sector-shaped portion 531 , the wire guide 537 may prevent the wire 43 from being separated from the first sector-shaped portion 531 .

[0104] In addition, the following reference Fig. 9 Learn about the example of angle adjustment on the leg extension machine.

[0105] Fig. 9 3 is a comparison diagram of adjusting the angle and height of the leg extension machine according to an embodiment of the present invention.

[0106] like Fig. 9 As shown, by adjusting the placement height adjustment part 157, the placement angle adjustment part 25, the movement adjustment plate 37, the intermediate pin 47 and the transmission adjustment plate 53, etc., the leg extension machine 1 of the present invention can be adjusted to suit the body of each user, so that effective exercise can be performed. In addition to examples (a) and (b), the leg extension machine 1 of the present invention can also be used in more various embodiments.

[0107] As described above, the leg extension machine according to one embodiment of the present invention has the effect that the user can lift the counterweight block to exercise by raising the lever connected to the counterweight block while sitting, and can be used not only according to the length of the user's legs, but also according to the thickness of the legs.

[0108] In addition, the leg extension machine according to an embodiment of the present invention has the effect of reducing manufacturing costs and facilitating maintenance of the sports facility due to its compact overall structure.

[0109] As described above, although an embodiment of the present invention is described through limited embodiments and drawings, an embodiment of the present invention is not limited to the above-mentioned embodiments, and any person skilled in the art can make various modifications and variations to the description. Therefore, an embodiment of the present invention should only be understood through the scope of the attached claims, and its equal or equivalent variations should all belong to the scope of the concept of the present invention.

Claims

1. A leg extension machine, characterized in that: include: a frame part (10), wherein the frame part (10) stands in a state of being supported by the ground; A seating portion (20), the seating portion (20) being connected to the frame portion (10) and providing a space for a user to sit, and capable of adjusting a standing angle and height; a moving rotating part (30), the moving rotating part (30) being connected to the frame part (10), and being arranged adjacent to the seating part (20) to provide a space for a seated user to hang his legs, and being rotated by an external force applied by the user; a weight portion (40), the weight portion (40) being supported by the frame portion (10) and accommodating a plurality of counterweight blocks; and A weight transfer part (50), the weight transfer part (50) is connected to the frame part (10), plays an intermediary role between the moving rotating part (30) and the weight part (40), and is linked to the rotation of the moving rotating part (30) to make the counterweight block of the weight part (40) rise and fall, The placement part (20) comprises: a buttocks seating portion (21), the buttocks seating portion (21) supporting the buttocks of a seated user; a back resting portion (23), the back resting portion (23) supporting the back of a seated user, and the back resting portion (23) being arranged independently of the buttocks resting portion (21); a placement angle adjustment portion (25), the placement angle adjustment portion (25) being connected to the frame portion (10) and the back placement portion (23) to adjust the angle of the back placement portion (23); and a plurality of gripping portions (27), wherein the plurality of gripping portions (27) are arranged parallel to the buttocks resting portion (21) in a state of being connected to both sides of the buttocks resting portion (21) so as to be able to be gripped by a user, The frame part (10) comprises: A lower support portion (11), wherein the lower support portion (11) is supported on the ground; A counterweight accommodating portion (13), the counterweight accommodating portion (13) being arranged behind the placement portion (20) and standing from the lower support portion (11), and forming an accommodating space therein to provide a space for accommodating the weight portion (40); a placement support portion (15), the placement support portion (15) standing from the lower support portion (11) and supporting the placement portion (20); a transfer support portion (17), the transfer support portion (17) standing from the lower support portion (11) and arranged adjacent to the counterweight accommodating portion (13) to support the weight transfer portion (50); and a motion support portion (19), the motion support portion (19) acting as an intermediary between the transmission support portion (17) and the placement support portion (15), and supporting the motion rotating portion (30), The placement support part (15) comprises: a pair of placement support members (151), the pair of placement support members (151) supporting the buttocks placement portion (21); a pair of curved support members (153), the pair of curved support members (153) extending from a first point of the pair of placement support members (151); a rotating support member (155), the rotating support member (155) acting as an intermediary between the pair of placement supports (151) and the back placement portion (23), and having a plurality of rotating connecting rods (1551) in the space between the pair of placement supports (151), so that the back placement portion (23) can rotate relative to the hip placement portion (21); and A placement height adjustment portion (157) is provided, wherein one end of the placement height adjustment portion (157) is connected to a point of the lower support portion (11), and the other end of the placement height adjustment portion (157) is connected to the pair of curved support members (153), and the height of the pair of curved support members (153) can be adjusted, thereby adjusting the height of one side of the hip placement portion (21) to adjust the angle of the hip placement portion (21).

2. The leg extension machine according to claim 1, characterized in that: The placement angle adjustment unit (25) comprises: An angle adjustment plate (251), wherein the angle adjustment plate (251) is fixed to the rotating connecting rod (1551), operates in conjunction with the back resting portion (23), and is formed in a fan shape; A plurality of angle adjustment holes (253), the plurality of angle adjustment holes (253) passing through the angle adjustment plate (251) and passing through at intervals along an arc; a fixing rod module (255) coupled to a second point of the seating support (151) and inserted into at least one of the plurality of angle adjustment holes (253) to fix the angle of the back seating portion (23); and A damper (257) acts as an intermediary between the third point of the mounting support (151) and a point of the angle adjustment plate (251), and when the fixing rod module (255) is released, the angle adjustment plate (251) is pulled toward the third point of the mounting support (151).

3. The leg extension machine according to claim 2, characterized in that: The weight portion (40) comprises: A counterweight stacking section (41), wherein the counterweight stacking section (41) is formed by stacking a plurality of counterweights that are separable from each other in a state where the counterweight stacking section (41) is accommodated in the counterweight accommodation section (13); a wire (43), one side of the wire (43) being connected to the weight transfer part (50), and the other side of the wire (43) being connected to the counterweight stacking part (41), so that the counterweight stacking part (41) is moved up and down according to the position movement of the weight transfer part (50); A weight intermediary part (45), the weight intermediary part (45) plays an intermediary role between the wire (43) and the counterweight block stacking part (41), and makes the subordinate counterweight blocks different according to the connection state with the counterweight block stacking part (41); an intermediate pin (47), the intermediate pin (47) being used to determine the connection state between the weight intermediate portion (45) and the counterweight stacking portion (41); and a guide roller portion (49), wherein the guide roller portion (49) provides a moving path for the wire (43) when the guide roller portion (49) is accommodated in the counterweight accommodating portion (13), The guide roller portion (49) comprises: A first upper roller member (491), the first upper roller member (491) being arranged on the upper side of the counterweight accommodating portion (13) and being arranged on the same line as the weight intermediary portion (45); a second upper roller member (492), the second upper roller member (492) being accommodated in the counterweight accommodating portion (13), and being arranged adjacent to the first upper roller member (491) and being arranged toward the weight transfer portion (50); and a lower roller member (495), the lower roller member (495) being accommodated in the counterweight accommodating portion (13), and being arranged on the lower side of the second upper roller member (492), and being arranged adjacent to the weight transfer portion (50), The weight transfer part (50) comprises: a transmission rotation shaft (51), the transmission rotation shaft (51) being rotatably connected to the transmission support portion (17); and a transmission adjustment plate (53), the transmission adjustment plate (53) being linked with the transmission rotation shaft (51) and being rotated by the wire (43), The transfer adjustment plate (53) comprises: A first fan-shaped portion (531), wherein the first fan-shaped portion (531) is formed in a fan shape; A plurality of first through holes (533), wherein the plurality of first through holes (533) penetrate the first sector portion (531) and are spaced apart along an arc; a wire fixing portion (535), wherein the wire fixing portion (535) is formed on one side of the first fan-shaped portion (531) to fix the wire (43); and A wire guide portion (537) is provided to guide the wire (43) fixed on the wire fixing portion (535) to be arranged along the outer peripheral edge of the first fan-shaped portion (531).

4. The leg extension machine according to claim 3, characterized in that: The moving rotating part (30) comprises: A connecting rotating shaft (31), the connecting rotating shaft (31) is formed in multiple concentric stages so as to surround the outer peripheral surface of the transmission rotating shaft (51), and is rotatably connected with the transmission rotating shaft (51) as a reference; A linkage rod (33), wherein the linkage rod (33) is vertically connected to the connecting rotating shaft (31); an adjusting rotating shaft (35), the adjusting rotating shaft (35) being rotatably connected to the end of the linkage rod (33); a motion adjustment plate (37), the motion adjustment plate (37) being formed at the end of the linkage rod (33); and a motion connection part (39), which is connected to the adjustment rotation shaft (35), provides a space for installing a hanging part (38) for hanging the legs of a user, and is detachably connected to the motion adjustment plate (37), The connecting rotating shaft (31) comprises: a bending selection portion (311), the bending selection portion (311) being arranged in parallel with the first fan-shaped portion (531), and a terminal end of the bending selection portion being arranged on the upper portion of the plurality of first through holes (533); and A linkage button portion (313), wherein the linkage button portion (313) is formed at the end of the bending selection portion (311), so that when the linkage button portion (313) is inserted into any one of the plurality of first through holes (533), the linkage button portion (313) is released from the through hole by an applied external force, and when the applied external force is released, the linkage button portion (313) is reset and inserted into the opposite through hole, The linkage button portion (313) causes the angle formed between the linkage rod (33) and the ground to change according to the connection position between the linkage button portion (313) and the first fan-shaped portion (531), thereby causing the height of the hanging portion (38) from the ground to change. The motion adjustment plate (37) comprises: a second fan-shaped portion (371), wherein the second fan-shaped portion (371) is formed in a fan shape; and A plurality of second through holes (373), wherein the plurality of second through holes (373) are spaced apart and penetrate along an arc shape, The motion connection portion comprises: a motion selection portion (391), the motion selection portion (391) being arranged in parallel with the second fan-shaped portion (371), and having a terminal end arranged at an upper portion of the plurality of second through holes (373); and A motion button portion (393) is formed at the end of the motion selection portion (391), so that when the motion button portion (393) is inserted into any one of the plurality of second through holes (373), the motion button portion (393) is released from the through hole by an applied external force, and when the applied external force is released, the motion button portion (393) is reset and inserted into the opposite through hole, The motion button portion (393) causes the spacing distance between the hanging portion (38) and the placement portion (20) to change according to the connection position between the motion button portion (393) and the second fan-shaped portion (371).

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