JP2007319523A - Training machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leg press type training machine which enables the effective training of the quadriceps muscle of thigh and the gluteus muscle by preventing released load. <P>SOLUTION: A fit plate 23 and a back rest 24 are so arranged as to face the front and rear end parts of a basic frame 22 of the training machine 21. A load applicator 25 for applying a load onto the back rest 24 has a group of weight blocks 77 stacked in plurality and a load adjustment mechanism 26 which increases the load as the angle of rotation grows in the back rest 24. The load adjustment mechanism 26 is provided with a circular cam 82 turning in linkage with the rotation of the backrest 24 and an eccentric cam 83 free to rotate for pulling up the selected number of weight blocks 77 and a link shaft 84 between both the cams 82 and 83. One end 84a of the link shaft 84 is linked to a link hole 87 at the center position of the circular cam 82 while the other end part 84b is linked to a link hole 86 at the eccentric position of the eccentric cam 83. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a leg press type training machine that trains the quadriceps and greater gluteal muscles.

  As is well known, a leg press type training machine is often used for training the quadriceps and greater gluteal muscles. An example of this type of training machine is that of Non-Patent Document 1.

  Referring to FIG. 10, the outline of this type of training machine 1 is that a basic frame 2 placed on the floor or the like and a weight block group stacked in a weight frame 3 at the front end of the basic frame 2. 4, a seating portion 5 rotatably supported at a rear end portion of the basic frame 2, a connecting frame 6 that connects the weight frame 3 and the basic frame 2, and a supporting frame 6. A foot plate 7, a belt 8 that transmits the load load of the weight block group 4 to the seating portion 5, a pair of sheaves 9 that suspend the belt 8, and a guide that guides the belt 8 to the seating portion 5. The sheave 9 is mainly configured, and the sheave 9 is rotatably supported on the upper portion of the weight frame 3.

  The seat portion 5 includes a support plate 12 that supports the seat pad 11, an L-shaped back arm 14 that supports the back pad 13, and a fixed plate 15 that is fixed to the bent portion of the back arm 14. And a connecting plate 16 that rotatably connects the fixed plate 15 and the upper end of the support plate 12, and the support plate 12 and the backrest arm 14 are rotatable relative to the basic frame 2. Is pivotally supported.

  The guide sheave 10 is rotatably supported by the front end portion of the basic frame 2, the connecting frame, and the fixed plate 15. One end portion of the belt 8 is connected to the fixing portion 17 of the basic frame 2 via each guide sheave 10, while the other end portion of the belt 8 is fixed to a weight connector 18.

When the trainee puts the soles of both feet on the foot plate 7 and extends the knee, the back pad 13 is pressed, so the back arm 14 tries to rotate in the direction of arrow A. At this time, since the belt 8 is held in the direction of the arrow B, the load of the selected number of weight blocks 4 a is applied to the backrest arm 14. The quadriceps and greater gluteal muscles are trained by performing knee flexion and extension (leg press) while resisting this load.
Hoist Fitness, Owner's Manual, [Online], May 8, 2006 search, Internet <URL: http: // www. hoistfitness. com / _manuals / kl_2403_om. pdf

  However, although the conventional example gives a load to the rotation of the back arm 14 in the direction of the arrow A, no consideration is given to the load loss due to the weight of the trainee's body (particularly the head). Absent.

  That is, during the leg press exercise, if the rotation angle of the back support arm 14 is increased, the weight of the trainee's body works in the rotation direction, so that the load may suddenly come off during the exercise. As a result, the required amount of load cannot be obtained, and the efficiency of the training deteriorates.

  Therefore, a means for selecting the weight block 4a exceeding the necessary load can be considered assuming this load loss, but not only the number adjustment is difficult, but also a great load is applied at the start of exercise, so the muscle is damaged instead. There is a fear.

  The present invention is a technical idea created to provide a training machine capable of effectively training the quadriceps and greater gluteal muscles by preventing the load loss of the conventional example, and the invention according to claim 1 Is provided with a foot plate supported at one end of the basic frame, a backrest rotatably supported at the other end of the basic frame, and a load loading device for applying a load to the rotation of the backrest, A training machine that trains muscles by bending and stretching a knee while placing the soles of both feet on the foot plate and placing the back against the backrest, and as the rotation angle of the backrest increases, It is characterized by providing a load adjusting mechanism for increasing the load on the backrest.

  According to the present invention, when the rotation angle of the backrest is increased, the weight of the trainee's body is added to the rotation direction of the backrest, but the load adjustment mechanism increases the load load of the backrest. The load loss of the back of the back is prevented. As an aspect of this load adjustment mechanism, for example, a type using an eccentric drive panel according to claim 2 can be cited.

  According to the second aspect of the present invention, the load load device includes a weight block in which a plurality of sheets are stacked, and the load adjustment mechanism includes a drive panel that rotates in conjunction with the rotation of the backrest, and a selected number of sheets. A rotatable drive panel for lifting the weight block, and a connecting shaft for connecting the two drive boards, one end of the connecting shaft is connected to the center position of one of the drive boards, and the other end is connected to the other It is characterized by being connected to the eccentric position of the drive panel.

  Since the connecting shaft is connected to the eccentric position of the other drive panel, the load on the backrest increases as the turning angle increases. For example, an eccentric cam is used as the other drive panel.

  According to a third aspect of the present invention, a support frame that supports the foot plate is erected at one end portion of the basic frame so as to face the backrest, while the foot plate is a foot of both feet of a trainee. A plate body on which the back is placed and a guide frame on the back surface of the plate body are provided, and the guide frame is attached to the support frame so that the fixing position can be adjusted.

  Therefore, the height of the foot plate and the distance from the backrest can be adjusted according to the body of the trainee. As an aspect of the means for adjusting the attachment position, for example, the invention described in claim 4 is cited.

  In the invention according to claim 4, the support frame is provided with an adjustment plate in which a plurality of adjustment holes are formed, while the guide frame has a lock mechanism fixed to the adjustment plate, The lock mechanism includes a lock pin that fits into the adjustment hole, an elastic body that fits the lock pin into the adjustment hole, and a lever that releases the fit of the lock pin.

  Therefore, after releasing the lock pin by lever operation, the adjustment hole is changed by sliding the guide frame along the support frame, and the mounting position of the guide frame can be adjusted.

  The invention according to claim 5 is characterized in that a pair of shoulder pads for pressing both shoulders of the trainee are provided at the upper end of the backrest.

  Therefore, both shoulders of the trainee are held by the shoulder pad, and the body position is prevented from being displaced. The shoulder pad can be adjusted in position, for example, as in the sixth aspect of the invention.

  The invention according to claim 6 is characterized in that the backrest includes a backrest arm rotatably supported on the other end of the basic frame, and a guide frame that supports the shoulder pad. A fixed position is attached to the backrest arm so as to be adjustable.

  Therefore, the position of the shoulder pad can be adjusted according to the body of the trainee. As one aspect of this position adjusting means, for example, the invention described in claim 7 is cited.

  According to the seventh aspect of the present invention, the upper end portion of the backrest arm is provided with an adjustment plate in which a plurality of adjustment holes are formed, while the guide frame is fixed to the adjustment plate. The lock mechanism includes a lock pin that fits into the adjustment hole, an elastic body that fits the lock pin into the adjustment hole, and a lever that releases the fit of the lock pin.

  Therefore, after the lock pin is released by lever operation, the adjustment hole is changed by sliding the guide frame along the upper end of the backrest arm. Thereby, the mounting position of the guide frame is changed, and the position of the shoulder pad is adjusted.

  The invention according to claim 8 is characterized in that an arm for supporting the shoulder pad is provided on the guide frame, and a grip for a trainee to hold is provided on the arm.

  According to the first to eighth aspects of the present invention, load loss of the backrest during exercise is prevented, so that the efficiency of training is improved, and the quadriceps muscle, greater gluteal muscle, etc. can be effectively trained.

  In particular, according to the invention described in claim 3.4, since the height of the foot plate and the distance between the back plate and the back can be adjusted, leg press exercise can be performed in a posture suitable for the body of the trainee.

  According to the fifth aspect of the present invention, since the position of the trainee's body is prevented from being displaced, the posture is stable and the exercise can be continued in the optimum posture.

  According to invention of Claim 6.7, the position of a shoulder pad can be adjusted according to a trainee's body.

  According to the eighth aspect of the invention, since the training can be performed while holding the arm, the exercise posture is stabilized.

1 to 9 show a leg press type training machine according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the training machine 21 includes a basic frame 22 placed on the floor surface, a foot plate 23 supported on the front end of the basic frame 22 and on which both feet are placed, and the basic frame 22 A backrest 24 rotatably supported at the rear end of the frame 22, a load load device 25 that applies a load to the rotation of the backrest 24, and the backrest 24 as the rotation angle of the backrest 24 increases. A load adjustment mechanism 26 for increasing the load load and a seating seat 27 whose seating surface angle changes in conjunction with the backrest 24 are mainly configured, and the foot plate 23 and the backrest 24 are arranged to face each other. Yes.
(1) Foot plate 23
As shown in FIG. 3, the foot plate 23 is supported by a pair of support frames 30 at the front end portion of the basic plate 22. The two support frames 30 are erected toward the backrest 24. A rail 32 is fixed to the lower side surface of the support frames 30, and a plurality of adjustments are provided on the outer side surface of one of the support frames. An adjustment plate 34 having holes 33 formed at equal intervals is bolted.

  Specifically, the foot plate 23 is welded to a horizontally long rectangular plate main body 35, a fixed plate 36 standing upright on the back surface of the plate main body 35, and a lower surface of the central portion of the fixed plate 36. And a connecting bar 38 that connects the guide frame 37 and the back surface of the plate main body 35.

  As shown in FIG. 4A, the upper ends of the support plates 30 are inserted into the guide frame 37, and a pair of slide guides 40 having a U-shaped cross section are fixed to the inner surface of the guide frame 37. Has been. The guide grooves 40 a of the slide guides 40 are slidably attached to the rails 32.

  The plate body 35 is biased by a gas spring 39, while the guide frame 37 has a lock mechanism 41 fixed to the adjustment plate 34 on the left side plate. The locking mechanism 41 releases a spring 43 (elastic body) accommodated in the cylindrical portion 42 of the left side plate of the guide frame 37, a lock pin 45 fitted into the adjustment hole 33, and the lock pin 45. And a flange 44 of the lock pin 45 is urged by the spring 43.

  The lever 48 is rotatably connected to a shaft 46 on the outer surface of the flange 44 via a connector 47. The central portion of the lever 48 is rotatably supported between a pair of support pieces 49 on the back surface of the plate body 35.

  Therefore, when the lever 48 is rotated in the direction of arrow C in FIG. 3, the lock pin 45 is pulled up to the base end portion 51 of the lever 48 as shown in FIG. As a result, the lock pin 45 is disengaged from the adjustment hole 33 and the guide frame 37 is unlocked.

  If the plate body 35 is operated in the vertical direction in this state, the slide guide 40 slides along the rail 32, so that the guide frame 37 is fixed as shown by an arrow D in FIG. The position is adjusted along the longitudinal direction of the support frame 30, and the adjustment hole 33 into which the lock pin 45 is inserted is changed.

At this time, since the flange 44 is urged by the spring 43, when the lever 48 is released, the lock pin 45 is fitted into the changed adjustment hole 33, and the guide frame 37 is moved to the adjustment plate 34. Fixed to. Therefore, the height of the plate body 35 and the distance between the plate body 35 and the backrest 24 can be freely adjusted.
(2) Backrest 24
As shown in FIG. 1, the backrest 24 includes an L-shaped backrest arm 55, a shoulder support member 56 attached to the upper end of the backrest arm 55 so as to be adjustable in height, There is a pair of left and right shoulder pads 57 supported by the shoulder support members 56 and holding the shoulders of the trainee, and a back pad 58 supported on the upper end of the back arm 55 so as to face the plate body 35. is doing.

  The lower end portion of the back support arm 55 is rotatably supported via a rotation shaft between a pair of support pieces 59 at the rear end portion of the basic frame 22, while the upper end portion of the back support arm 55 is supported. An adjustment plate 53 in which adjustment holes 52 are formed at equal intervals is screwed to the left side surface, and a rail 60 is fixed to the rear surface. The upper and lower ends of the backrest arm 55 are connected to a connecting bar 61, and a sheave 64 around which the belt 63 is wound is rotatably attached to the bent portion.

  As shown in FIG. 5, the shoulder support member 56 is supported by a pillow pad 91 that supports the head of the trainee, a guide frame 65 inserted through the upper end of the back arm 55, and the guide frame 65. A U-shaped arm 66 has a central portion fixed to a fixed portion on the back surface of the guide frame 65, and a grip 66a grasped by a trainee is held at the tip of the arm 66. It is attached.

  As shown in FIG. 6A, the guide frame 65 has a lock mechanism 41 fixed to the adjustment plate 53 on the left side plate, and the adjustment using the same means as the case of the foot plate 23. It is being fixed to the plate 53 (In FIG. 6, the same code | symbol is used for the attachment structure of the said footplate 23 attachment.).

  That is, the slide guide 40 having a U-shaped cross section that is movable along the rail 60 is fixed to the inner surface of the guide frame 65. The guide groove 40 a of the slide guide 40 is slidably fitted to the rail 60.

  The lock mechanism 41 includes a spring 43 (elastic body) housed in a cylindrical portion 67 of the left side plate of the guide frame 65, a lock pin 45 fitted into the adjustment hole 52, and the lock pin 45 being fitted. And a flange 44 of the lock pin 45 is urged by the spring 43, and a shaft 46 extends on the outer surface of the flange 44.

  Unlike the case of the foot plate 23, the lever 68 has a U-shaped lever body 69 and an operation portion 70 extending forward from one end of the lever body 69, as shown in FIG. The other end 69a of the lever main body 69 is rotatably connected to the shaft 46 via a connecting tool 47 as shown in FIG.

  As shown in FIG. 5, one bent portion 71 of the lever body 69 is pivotally supported by a pair of support pieces 72 erected on the outer surface of the guide frame 65. Therefore, when the operation unit 70 is pulled down in the direction of arrow E, the other end of the lever main body 69 is rotated in the direction of arrow F, whereby the lock pin 45 is moved as shown in FIG. The guide frame 65 is released from the adjustment hole 52 and the guide frame 65 is unlocked.

  In this case, since the slide guide 40 is slidable along the rail 60, the guide frame 65 is fixed in the longitudinal direction of the upper end portion of the backrest arm 55 as shown by an arrow G in FIG. The adjustment hole 52 into which the lock pin 45 is inserted can be changed by adjusting both shoulder pads 57 up and down.

Further, since the flange 44 is urged by the spring 43, if the operating portion 70 is released, the lock pin 45 is fitted into the changed adjustment hole 33, and the guide frame 65 is moved to the adjustment plate. 53 is fixed. Thereby, the fixed position of the shoulder pad 58 can be freely adjusted in the vertical direction.
(3) Seating seat 27
As shown in FIG. 1, the seating seat 27 is placed on a seating base 73. The seating base 73 is pivotally connected to the connecting bar 61 at the rear end and is pivotally supported by the support plate 74 at the front end. The support plate 74 is pivotally supported between the pair of support pieces 75 at the center of the basic frame 22 via a rotation shaft.
(4) Load application device 25
As shown in FIG. 1, the load load device 25 includes a plurality of weight blocks 77 stacked on a lower frame of a rectangular weight frame 76, and a connecting tool that connects the weight blocks 77 and one end of a belt 78. 79 and a pair of sheaves 80 that suspend the belt 78, and both sheaves are rotatably attached to the upper frame of the weight frame 76.

The required number of weight blocks 77 is selected using a connecting rod and a pin. The selected number of weight blocks 77 are raised along the slide rail 81 between the upper and lower frames of the weight frame 76 to generate a load of a predetermined weight when the belt 78 is pulled. ing.
(5) Load Adjustment Mechanism As shown in FIG. 7, the load adjustment mechanism 26 rotates in synchronization with the small-diameter circular cam 82 that rotates in conjunction with the rotation of the backrest arm 55 and the circular cam 82. A large-diameter eccentric cam 83, a connecting shaft 84 for connecting both the cams 82.83, and a pair of support portions 90 for rotatably supporting the connecting shaft 84.

  Of these, the eccentric cam 83 is formed in a circular shape, but the connecting hole 86 to which the connecting shaft 84 is connected is formed at a position offset from the center. The connecting hole 86 is offset from the center position, and the eccentric cam 83 has different inner diameters (distances from the connecting hole 86 to the outer peripheral portion) on the eccentric side and the counter eccentric side.

  Specifically, the eccentric cam 83 has a small inner diameter (R1) on the eccentric side and a large inner diameter (R2) on the opposite eccentric side. The inner diameter gradually increases, and the other end of the belt 78 is connected to an outer peripheral portion 83a therebetween.

  When the eccentric cam 83 rotates in the direction of the arrow H, the belt 78 is wound up, so that the belt 78 is pulled in the direction of the arrow I and the selected number of the weight blocks 77 group is pulled up.

  On the other hand, the circular cam 82 is formed with a connecting hole 87 in the center part where the connecting shaft 84 is connected in the center part, and one end of the belt 63 is connected to the outer peripheral part. The other end of the belt 63 is connected to a belt fixing portion 88 at the center of the basic frame 22 while being suspended from a sheave 64 of the backrest arm 55.

  Therefore, when the backrest arm 55 rotates in the direction of arrow J, as shown by arrow K, the sheave 64 rotates in the same direction, whereby the belt 63 is pulled in the direction of arrow L, and the circular cam 82 rotates in the direction of arrow M.

  One end 84 a of the connecting shaft 84 is connected to the connecting hole 87 of the circular cam 82, while the other end 84 b of the connecting shaft 84 is connected to the connecting hole 86 of the eccentric cam 83. Yes. Therefore, when the circular cam 82 rotates in the direction of arrow M, the eccentric cam 83 rotates in the direction of arrow H, the belt 78 is wound around the eccentric cam 83, and the load of the selected number of weight blocks 77 is loaded. A load is applied to the backrest arm 55.

  At this time, since the inner diameter of the eccentric cam 83 gradually increases from the eccentric side to the opposite eccentric side, the belt 78 is moved to the eccentric cam 83 as the eccentric cam 83 rotates in the arrow H direction. Winding power is increasing. That is, the rotational force T necessary to rotate the connecting shaft 84 is determined by multiplying the weight M of the weight block by the inner diameter R, and therefore increases as it goes to the opposite eccentric side where the inner diameter is larger.

Thereby, as the rotation angle of the backrest arm 55 in the direction of arrow J increases, the load load of the backrest arm 55 increases. In this sense, the load load applied to the backrest arm 55 is rotated by the rotation of the backrest arm 55. It is adjusted according to the moving angle.
(5) Training Operation Example Accordingly, an operation example in the case of performing a leg press exercise using the training machine 21 based on FIG. 8 and FIG. 9 will be described. After selecting 77, the user sits on the seat 27 (in FIGS. 7 and 8, the weight block 77 group is surrounded by the weight cover 89).

  Then, as shown in FIG. 8, both feet are placed on the plate body 35 of the foot plate 23, the back is put on the back pad 58, and the exercise posture is held with both grips 66 a held.

  In this case, since the height of the plate main body 35 and the distance between the plate main body 35 and the backrest 24 can be adjusted by operating the lever 48 or the like, the trainee can perform training in an exercise posture suitable for his / her body. .

  Next, as shown in FIG. 9, with this exercise posture, when the knee is stretched and turned backward, the backrest arm 55 rotates in the direction of the arrow J, so that the selected weight block 77 group is raised. Then, a load corresponding to the selected number is applied to the back support arm 55. By repeating the flexion movement (leg press exercise) that continues to stretch the knee while resisting this load, and then slowly returns to it, the quadriceps muscles and greater gluteal muscles of both legs are trained.

  During this training, both shoulders of the trainee are pressed against the shoulder pad 57, so that the body is not displaced backward, the posture is stable, and the exercise can be continued in the optimum posture. Since the fixing position of the shoulder pad 57 can be freely changed, it can be appropriately adjusted according to the body of the trainee.

  Further, when the rotation angle of the back arm 55 in the arrow J direction increases, the weight of the trainee's body (particularly the head) is added in the same direction, but the eccentric cam 83 rotates in the arrow H direction. The backrest arm 55 increases the load as the rotation angle in the direction of the arrow J increases, and the load omission is prevented.

  Therefore, the load applied to both legs of the trainee during leg press exercise is not reduced, thereby improving the efficiency of training and effectively training the quadriceps muscle, greater gluteal muscle, and the like.

  As a result, it is not necessary to select the weight block 77 assuming that the load is lost as in the conventional case, and not only the trouble of adjusting the number of sheets is avoided, but also a large load is applied during the initial operation of the leg press movement. Is prevented.

In addition, since the trainee can perform the leg press exercise while holding both the grips 66a, there is an advantage that the exercise posture is stabilized.
(6) Others The present invention is not limited to the above-described embodiment. For example, the eccentric cam 83 does not necessarily have a circular shape, and may be formed in an elliptical shape.

  Further, the arrangement relationship between the circular cam 82 and the eccentric cam 83 can be reversed. In this case, the eccentric cam 83 and the belt 63 are connected, while the circular cam 82 is connected to the belt 78, and both the cams 82.83 are connected by the connecting shaft 84. As a result, as the rotation angle of the back support arm 55 increases, the eccentric cam 83 rotates from the non-eccentric side toward the eccentric side, and the load load on the back support arm 55 increases.

  Furthermore, the outer peripheral surface of the grip 66a can be covered with an elastic body or the like so that the trainee can easily grip it.

A side view of a training machine concerning an embodiment of the present invention. The front view. The rear perspective view of the foot plate. (A) is a cross-sectional view taken along the line P-P in FIG. 3, and (b) is a cross-sectional view in a state in which the lock of (a) is released. The perspective view of the shoulder support member. (A) is the cross-sectional view of the QQ line of FIG. 5, (b) is the cross-sectional view of the state which unlocked (a). The perspective view of the load adjustment mechanism. The side view which shows the state which the trainee sat down. The side view which shows the state which the trainee operated. The side view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 ... Training machine 22 ... Basic frame 23 ... Foot plate 24 ... Backrest 25 ... Load load device 26 ... Load adjustment mechanism 30 ... Support frame 33.52 ... Adjustment hole 34.53 ... Adjustment plate 35 ... Plate main body 37 ... Guide frame 41 ... Lock mechanism 43 ... Spring (elastic body)
45 ... Lock pin 48.68 ... Lever 55 ... Backrest arm 57 ... Shoulder pad 66 ... Arm 66a ... Grip 77 ... Weight block 82 ... Circular cam (one drive panel)
83 ... Eccentric cam (the other drive panel)
84 ... Connecting shaft 84a ... One end of the connecting shaft 84b ... Other end of the connecting shaft

Claims (8)

A foot plate supported on one end of the basic frame; a backrest rotatably supported on the other end of the basic frame; and a load loading device that applies a load to the rotation of the backrest. A training machine that trains muscles by bending and stretching the knees with the soles of both feet on the plate and the back resting on the back,
A training machine, comprising a load adjustment mechanism for increasing a load load of the backrest as the rotation angle of the backrest increases. While the load loading device has a weight block in which a plurality of layers are laminated,
The load adjustment mechanism includes a drive board that rotates in conjunction with the rotation of the backrest, a rotatable drive board that lifts the selected number of weight blocks, and a connecting shaft that connects the two drive boards.
2. The training machine according to claim 1, wherein one end of the connecting shaft is connected to a center position of one of the drive boards, and the other end is connected to an eccentric position of the other drive board. On one end of the basic frame, a support frame that supports the foot plate is erected facing the backrest,
The foot plate includes a plate body on which the soles of both feet of the trainee are placed, and a guide frame on the back of the plate body,
The training machine according to claim 1, wherein the guide frame is attached to the support frame so that a fixed position thereof can be adjusted. The support frame is provided with an adjustment plate in which a plurality of adjustment holes are formed, while the guide frame has a lock mechanism fixed to the adjustment plate,
The lock mechanism includes a lock pin that fits into the adjustment hole, an elastic body that fits the lock pin into the adjustment hole, and a lever that releases the fit of the lock pin. Training machine.   The training machine according to any one of claims 1 to 4, wherein a pair of shoulder pads for holding both shoulders of a trainee are provided at an upper end portion of the backrest. The backrest includes a backrest arm that is rotatably supported on the other end of the basic frame, and a guide frame that supports the shoulder pads.
6. The training machine according to claim 5, wherein the guide frame is attached to the backrest arm so that the fixed position can be adjusted. An adjustment plate having a plurality of adjustment holes is provided at the upper end of the back support arm, while the guide frame has a lock mechanism that is fixed to the adjustment plate.
The lock mechanism includes: a lock pin that fits into the adjustment hole; an elastic body that fits the lock pin into the adjustment hole; and a lever that releases the lock pin. Training machine. While providing an arm for supporting the shoulder pad on the guide frame,
The training machine according to claim 6 or 7, wherein a grip for the trainee to hold is provided on the arm.

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