Load transmission mechanism for training equipment and training equipment using the same

Abstract

Provided are a load transmission mechanism unit for a training machine that enables build-up of more flexible and elastic muscles, and a training machine employing the same. This load transmission mechanism unit comprises: a main driving shaft portion to an end portion of which an input portion is connected and that rotates together with the input potion; an intermediate shaft portion that rotates in coordination with rotation of the main driving shaft portion; a first rotation transmission portion; a second rotation transmission portion; an inner housing; an outer housing; a sliding shaft portion that is arranged in the outer housing and biased in a linear direction by an external force; rotation having a first central axis orthogonal to the axial direction of the sliding shaft portion; and a coupling joint portion. The coupling joint portion converts rotation and axial movement of a crank shaft portion into a displacement of the sliding shaft portion in an up-and-down direction. When a user moves the main driving shaft portion horizontally through a gripping portion or a footrest portion, an external force applied to the sliding shaft portion is transmitted to the grip portion or the footrest portion through the main driving shaft portion.

Description

Technical Field

[0001] The present invention relates to a load transmission mechanism part for a training instrument and a training instrument using the same.

Background Art

[0002] When training parts such as the shoulders, arms, back, and legs, there are various training instruments used by users. For example, Patent Document 1 discloses a training instrument capable of exercising both arms.

[0003] According to the training instrument described in Patent Document 1, without accompanying muscle hardening, it places less burden on the body such as muscle pain and fatigue, and can obtain muscles such as the shoulders, arms, and back that are flexible and elastic.

[0004] The training instrument of Patent Document 1 is provided with a load transmission mechanism part including a rotating shaft and gears called a lifting and swinging member between a wire extending from a weight (hammer) on the training instrument side and a gripping part gripped by the user. Compared with a training instrument configured to directly connect the weight and the gripping part gripped by the user with a wire, the training instrument of Patent Document 1 is provided with a lifting and swinging member (load transmission mechanism part), so that the load generated by the twisting motion of the arm that the user wants to train can be applied. Therefore, it is not limited to the monotonous direction of muscle training, but more muscles around the bones of the arm are moved by the twisting motion accompanied by a load, and it becomes possible to acquire muscle strength with flexibility and elasticity.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The inventor has intensively studied the lifting and swinging member (load transmission mechanism part) of the training instrument in Patent Document 1. Then, the inventor has come to improve it so that loads act on the axis of the lifting and swinging member (load transmission mechanism part) to which the gripping part gripped by the user is connected from more directions. For example, it becomes possible to apply loads not only in the pulling direction and the twisting direction but also in the pushing direction. Furthermore, the inventor has come to improve the lifting and swinging member (load transmission mechanism part) so that it can be applied not only to the movement of the user's arm but also to the movement of the leg.

[0007] The present invention has been made in view of the above points, and by applying loads to the axis constituting the load transmission mechanism part from more directions, a load transmission mechanism part for a training instrument that enables acquisition of muscles with more flexibility and elasticity, and a training instrument using the same are provided.

Means for Solving the Problems

[0008] That is, the load transmission mechanism for a training device according to the first aspect has an input part to which a user inputs force connected to an end, a driving shaft part that rotates together with the input part, an intermediate shaft part that rotates in conjunction with the rotation of the driving shaft part, a first rotation transmission part suspended between the driving shaft part and the intermediate shaft part for transmitting the mutual rotation between the driving shaft part and the intermediate shaft part, a second rotation transmission part provided between the intermediate shaft part and a crank shaft part orthogonal to the intermediate shaft part for transmitting the mutual rotation between the intermediate shaft part and the crank shaft part, an inner housing that houses the driving shaft part, the intermediate shaft part, and the crank shaft part, an outer housing that houses the inner housing and in which the inner housing moves internally in the axial direction of the crank shaft, a sliding shaft part that is disposed on the outer housing and is allowed displacement in a direction orthogonal to the axial direction of the crank shaft part and is biased in a linear direction by an external force, a rotation having a central axis orthogonal to the axial direction of the sliding shaft part and a rotation in a direction orthogonal to the central axis are allowed by a combination of a plurality of connecting piece parts, and a connecting joint part to which one of the plurality of connecting piece parts is connected to the sliding shaft part. The connecting joint part is connected to the crank shaft part with rotation having a central axis orthogonal to the axial direction of the crank shaft part allowed in a connecting piece part different from the one connecting piece part connected to the sliding shaft part, and converts the rotation and axial movement of the crank shaft part into vertical displacement of the sliding shaft part. When the user horizontally moves the driving shaft part through the input part, an external force applied to the sliding shaft part is transmitted to the input part through the driving shaft part.

[0009] The load transmission mechanism for a training device according to the second aspect has an input part to which a user inputs force connected to an end, a driving shaft part that rotates together with the input part, an intermediate shaft part that rotates in conjunction with the rotation of the driving shaft part, a first rotation transmission part that is suspended between the driving shaft part and the intermediate shaft part and transmits the mutual rotation of the driving shaft part and the intermediate shaft part, a second rotation transmission part that is provided between the intermediate shaft part and a crank shaft part orthogonal to the intermediate shaft part and transmits the mutual rotation of the intermediate shaft part and the crank shaft part, a connecting and fixing part that connects the driving shaft part, the intermediate shaft part, and the crank shaft part and transmits the mutual horizontal movement of the driving shaft part, the intermediate shaft part, and the crank shaft part, a sliding shaft part that allows displacement in a direction orthogonal to the axial direction of the crank shaft part and is biased in a linear direction by an external force, a rotation having a central axis orthogonal to the axial direction of the sliding shaft part and a rotation in a direction orthogonal to the central axis are allowed by a combination of a plurality of connecting piece parts, and a connecting joint part to which one of the plurality of connecting piece parts is connected to the sliding shaft part. The connecting joint part is connected to the crank shaft part with rotation having a central axis orthogonal to the axial direction of the crank shaft part allowed in a connecting piece part different from the one connecting piece part connected to the sliding shaft part, and converts the rotation and axial movement of the crank shaft part into vertical displacement of the sliding shaft part. When the user horizontally moves the driving shaft part through the input part, an external force applied to the sliding shaft part is transmitted to the input part through the driving shaft part.

[0010] In a third aspect, in the load transmission mechanism for a training device according to the first or second aspect, the input part may be a gripping part that a user grips or a footrest part of the user.

[0011] In a fourth aspect, in the load transmission mechanism for a training device according to the first or second aspect, the connecting joint part may be configured with a plurality of connected universal joints as main members.

[0012] In a fifth aspect, in the load transmission mechanism for a training device according to the first aspect, a connecting part for connecting to the training device may be provided on the outer housing, and the inner housing may slide inside the outer housing as the driving shaft part moves horizontally.

[0013] In the sixth aspect, in the load transmission mechanism part for the training instrument according to the second aspect, a connection part for connecting to the training instrument may be provided.

[0014] In the seventh aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the first rotation transmission part may be a transmission chain, a driving shaft sprocket may be provided on the driving shaft part, an intermediate shaft sprocket may be provided on the intermediate shaft part, and the transmission chain may be suspended between the driving shaft sprocket and the intermediate shaft sprocket.

[0015] In the eighth aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the second rotation transmission part may include an intermediate shaft bevel gear provided on the intermediate shaft part and a crankshaft bevel gear provided on the crankshaft part and meshing with the intermediate shaft bevel gear.

[0016] In the ninth aspect, in the load transmission mechanism part for the training instrument according to the third aspect, the gripping part may be an annular object. In the tenth aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the external force may be generated by a load applying part that freely adjusts the magnitude of the load of the training instrument. In the eleventh aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the sliding bearing that pivotally supports the sliding shaft part may have a bearing hole that obliquely inserts the sliding shaft part with respect to the axial direction of the crankshaft part. In the twelfth aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the sliding bearing that pivotally supports the sliding shaft part has a first bearing hole that inserts orthogonally with respect to the axial direction of the crankshaft part, and a second bearing hole that intersects the first bearing hole and obliquely inserts with respect to the axial direction of the crankshaft part, and the sliding shaft part may move between the first bearing hole and the second bearing hole as the sliding shaft part moves in the axial direction of the crankshaft part. In the thirteenth aspect, in the load transmission mechanism part for the training instrument according to the first or second aspect, the sliding bearing that pivotally supports the sliding shaft part may have a bearing hole in the shape of an inverted conical frustum. In the 14th aspect, in the load transmission mechanism portion for a training device according to the 1st or 2nd aspect, the sliding bearing that pivotally supports the sliding shaft portion may have a constricted portion at the central portion in the axial direction. The training device according to the 15th aspect may include the load transmission mechanism portion for a training device according to the 1st or 2nd aspect.

Advantages of the Invention

[0017] The load transmission mechanism portion for a training device according to the present disclosure includes an input portion to which a user inputs force and is connected to an end portion, a driving shaft portion that rotates together with the input portion, an intermediate shaft portion that rotates in conjunction with the rotation of the driving shaft portion, a first rotation transmission portion that is suspended between the driving shaft portion and the intermediate shaft portion and transmits the mutual rotation of the driving shaft portion and the intermediate shaft portion, an intermediate shaft portion, a second rotation transmission portion that is provided between the intermediate shaft portion and a crank shaft portion orthogonal to the intermediate shaft portion and transmits the mutual rotation of the intermediate shaft portion and the crank shaft portion, an inner housing that houses the driving shaft portion, the intermediate shaft portion, and the crank shaft portion, an outer housing that houses the inner housing and in which the inner housing moves internally in the axial direction of the crank shaft, a sliding shaft portion that is disposed on the outer housing and is allowed to be displaced in a direction orthogonal to the axial direction of the crank shaft portion and is urged in a linear direction by an external force, a rotation having a first central axis orthogonal to the axial direction of the sliding shaft portion, and a rotation having a second central axis orthogonal to the first central axis are allowed by a combination of a plurality of connecting piece portions, and a connecting joint portion to which one of the plurality of connecting piece portions is connected to the sliding shaft portion, and the connecting joint portion is connected to the crank shaft portion with a rotation having a central axis orthogonal to the axial direction of the crank shaft portion being allowed in a connecting piece portion different from the one connecting piece portion connected to the sliding shaft portion, and converts the rotation and axial movement of the crank shaft portion into vertical displacement of the sliding shaft portion, and when the user horizontally moves the driving shaft portion through the input portion, an external force applied to the sliding shaft portion is transmitted to the input portion through the driving shaft portion, thereby providing a load transmission mechanism portion for a training device that enables acquisition of muscles with more flexibility and elasticity and a training device using the same.

Brief Description of the Drawings

[0018]

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Mode for Carrying Out the Invention

[0019] <Summary of the following description> The load transmission mechanism unit 1A for a training device according to the first embodiment disclosed in FIGS. 1 to 5 and FIG. 34, the load transmission mechanism unit 1B for a training device according to the second embodiment disclosed in FIGS. 12 to 13, the load transmission mechanism unit 1D for a training device according to the fourth embodiment disclosed in FIGS. 22 to 24, and the load transmission mechanism unit 1E for a training device according to the fifth embodiment disclosed in FIGS. 25 to 29 are connected to the first training device 100 or the second training device 201 described later. The load transmission mechanism unit 1C for a training device according to the third embodiment disclosed in FIGS. 14 to 16 is connected to the second training device 201 described later.

[0020] The load transmission mechanism units 1A, 1B, 1C, 1D, and 1E for a training device are mechanical members provided with a mechanism for transmitting loads such as weights on the side of the first training device 100 and the second training device 201 to the user of the training device. The load transmission mechanism units 1A, 1B, 1D, and 1E for a training device are provided with a gripping portion 11 (see FIG. 1 etc.) that the user grips, and are used for training devices for the arm and shoulder. The load transmission mechanism unit 1C for a training device is provided with a footrest portion 271 (see FIG. 14 etc.) of the user, and is used for training devices for the leg. The gripping portions 11, 260 and the footrest portion 271 are input portions where the user inputs force. For example, the user turns the back of both hands towards the left and right of the first training device 100 in the initial state described below, and holds the gripping part 11 serving as the input part with the left and right hands respectively. Then, while the user holds the gripping part 11 with each of both hands, the user inputs a pulling force to the gripping part 11 by simultaneously lowering both arms downward. Also, the user turns the back of both hands towards the left and right of the first training device 100 in the initial state, and holds the gripping part 11 serving as the input part with the left and right hands respectively. Then, while the user holds the gripping part 11 with each of both hands, the user performs an open-chest movement by simultaneously opening both arms outward in an extended state, thereby inputting a force to cause the load transmission mechanism part 1A to perform a turning movement outward on the input part, which is the gripping part 11. Also, the user sits on the right side of the seat 211 of the second training device 201 in the initial state described below. Then, the user raises the right arm and holds the gripping part 260. Then, while the user maintains the state of holding the gripping part 260 with the right hand, the user swings the right arm downward forward, thereby inputting a pulling force to the gripping part 260 serving as the input part. Also, the user sits on the right side of the seat 211 of the second training device 201 described below, places the left foot on the footrest part 271 serving as the input part of the load transmission mechanism part 1C, and assumes a state of bending the knee. Then, the user inputs a pushing force to the footrest part 271 by extending the left foot.

[0021] <Load transmission mechanism part 1A for a training device according to the first embodiment> With reference to FIGS. 1 to 5 and FIG. 34, the configuration and operation of the load transmission mechanism part 1A for a training device according to the first embodiment will be described. The load transmission mechanism part 1A for a training device includes an outer housing 2 and an inner housing 3. The inner housing 3 is housed in the outer housing 2 and reciprocates in one direction inside the outer housing 2. A slide rail (not shown) is interposed between the outer housing 2 and the inner housing 3 to reduce the sliding friction generated between the outer housing 2 and the inner housing 3. The slide rail may be of a roller type, a bearing type, or the like.

[0022] <Explanation of the configuration of the load transmission mechanism part 1A for a training device according to the first embodiment> The inner housing 3 includes a drive shaft portion 4, an intermediate shaft portion 5, and a crank shaft portion 6, and the outer housing 2 includes a sliding shaft portion 13. Power can be transmitted between the drive shaft portion 4 and the sliding shaft portion 13 through each shaft portion therebetween.

[0023] In the load transmission mechanism portion 1A for the training device of the first embodiment, each of the drive shaft portion 4, the intermediate shaft portion 5, and the crank shaft portion 6 is rotatably supported by the inner housing 3. As understood from FIG. 1, the drive shaft portion 4 is rotatably supported by drive shaft bearings 4a and 4b attached to the inner housing 3, and the intermediate shaft portion 5 is rotatably supported by intermediate shaft bearings 5a and 5b attached to the inner housing 3.

[0024] The sliding shaft portion 13 is arranged in the outer housing 2 with displacement allowed in a direction orthogonal to the axial direction of the crank shaft portion 6, and is urged in a linear direction by an external force.

[0025] The sliding shaft portion 13 is supported by a sliding bearing 13a provided in the outer housing 2 and allowed to displace in the vertical direction in FIG. 1. Further, the sliding bearing 13a may be supported by line contact with respect to the sliding shaft portion 13. For example, the inner peripheral surface of the sliding bearing 13a has a mortar shape, and a part of the inner peripheral surface may be supported by line contact with the outer peripheral surface of the sliding shaft portion 13. According to this, the sliding shaft portion 13 can reduce the sliding friction with the sliding bearing 13a and can displace more smoothly in the vertical direction in FIG. 1.

[0026] In order to connect the load transmission mechanism portion 1A for the training device of the first embodiment to a first training device 100 (see FIGS. 6 to 11) described later, a connection portion 7 is provided in the outer housing 2. The form adopted by the connection portion 7 of the load transmission mechanism portion 1A for the training device is a cylindrical connection cylinder portion 8. A guide column 140 (see FIGS. 6 to 11) is inserted into the connection cylinder portion 8. For example, a member with low sliding resistance such as fluororesin is used for the connection cylinder portion 8. As a result, the load transmission mechanism portion 1A for the training device can smoothly move up and down and turn in the first training device 100.

[0027] The inner housing 3 of the load transmission mechanism portion 1A for the training device according to the first embodiment is capable of relatively horizontal movement with respect to the outer housing 2, the connecting portion 7, and the guide support column 140. That is, the driving shaft portion 4 provided on the inner housing 3 is capable of relatively horizontal movement with respect to the outer housing 2, the connecting portion 7, and the guide support column 140.

[0028] The connecting joint portion 12 allows rotation having a first central axis 12g orthogonal to the axial direction of the sliding shaft portion 13 and rotation having a second central axis 12h orthogonal to the first central axis 12g by a combination of a plurality of connecting piece portions 30, and one (30(12e)) of the plurality of connecting piece portions 30 is connected to the sliding shaft portion 13. A connecting piece portion 30 (third joint piece 12e) of the connecting joint portion 12 is connected to the lower end portion (first end portion 13b) of the sliding shaft portion 13. The connecting joint portion 12 allows rotation having a first central axis 12g orthogonal to the axial direction of the sliding shaft portion 13 (the axial direction means the direction in which the axis extends or the longitudinal direction of the axis. The same applies hereinafter) and rotation having a second central axis 12h orthogonal to the first central axis 12g by a combination of a plurality of connecting piece portions 30, and one (third joint piece 12e) of the plurality of connecting piece portions 30 (first joint piece 12a, second joint piece 12c, third joint piece 12e) is connected to the sliding shaft portion 13. Central axes including the first central axis 12g, the second central axis 12h, the third central axis 12j, and the fourth central axis 12k are rotation axes passing through the rotation center of rotation. The same applies hereinafter.

[0029] The connecting joint portion 12 allows rotation having a central axis orthogonal to the axial direction of the crank shaft portion 6 in connecting piece portions 30 (first joint piece 12a, second joint piece 12c) different from one connecting piece portion 30 (third joint piece 12e) connected to the sliding shaft portion 13, and is connected to the crank shaft portion 6, converting the rotation and axial movement of the crank shaft portion 6 into the vertical displacement of the sliding shaft portion 13.

[0030] The connecting joint portion 12 includes a first joint piece 12a, a second joint piece 12c, and a third joint piece 12e that are connecting piece portions 30. The first joint piece 12a and the second joint piece 12c are connected by a first universal joint 12b that is a universal joint 40. The second joint piece 12c and the third joint piece 12e are connected by a second universal joint 12d that is a universal joint 40. The universal joint 40 can freely change the angle at which two rotating shafts are joined and transmit the rotational motion of one rotating shaft with an angle to the other rotating shaft. The universal joint 40 may be various types of universal joints or a rod member called a connecting rod 41 (see FIG. 30). The universal joint 40 shown in FIG. 1 (for the first universal joint 12b and the second universal joint 12d) uses a connecting rod 41. The connecting rod 41 has two through holes (a first through hole 41a and a second through hole 41b) that are orthogonal to each other. A pin 12f that becomes a first central axis 12g is inserted through the first through hole 41a, and a pin 12f that becomes a third central axis 12j is inserted through the second through hole 41b (see FIG. 1). Examples of the universal joint include a spherical universal joint and a constant velocity universal joint. The connecting joint portion 12 is composed of a first joint piece 12a, a second joint piece 12c, and a third joint piece 12e that are three connecting piece portions 30, and universal joints 40 (the first universal joint 12b and the second universal joint 12d) that connect these adjacent connecting piece portions 30. Although the connecting joint portion 12 is configured with three connecting piece portions 30, it is not limited to this, and it may include four or more connecting piece portions 30. The connecting joint portion 12 includes at least two universal joints 40. For example, the connecting joint portion 12 having four connecting piece portions 30 includes two or three universal joints 40. The first joint piece 12a is rotatably attached with a pin 12f so as to straddle the side surface of the crankshaft portion 6. The pin 12f is orthogonal to the rotation axis of the crankshaft portion 6 and becomes the rotation axis of the rotation of the first joint piece 12a. The first joint piece 12a is attached to the crankshaft portion 6 so as to be swingable with the pin 12f as the rotation axis. The connecting joint portion 12 is provided with two universal joints 40, and since the first joint piece 12a and the crankshaft portion 6 are swingably connected, the rotation and axial movement of the crankshaft portion 6 can be converted into the vertical displacement of the sliding shaft portion 13.

[0031] The first universal joint 12b connects the first joint piece 12a and the second joint piece 12c using two rotating shafts that intersect at a right angle. The first joint piece 12a and the second joint piece 12c can bend at a predetermined angle in two directions perpendicular to each other with the first universal joint 12b as the pivot point.

[0032] The second universal joint 12d connects the second joint piece 12c and the third joint piece 12e using two rotating shafts that intersect at a right angle. The second joint piece 12c and the third joint piece 12e can bend at a predetermined angle in two directions perpendicular to each other with the second universal joint 12d as the pivot point.

[0033] One end of the first joint piece 12a has a fourth central axis 12k (pin 12f) that is perpendicular to the axial direction of the crankshaft portion 6 and is allowed to rotate and is connected to the crankshaft portion 6. Therefore, the first joint piece 12a rotates along the axial direction of the crankshaft portion 6. Also, since the other end of the first joint piece 12a is connected to the second joint piece 12c via the first universal joint 12b, the first joint piece 12a can bend in two directions perpendicular to the second joint piece 12c.

[0034] The second joint piece 12c is connected to the third joint piece 12e via the second universal joint 12d at the end opposite to the end connected to the first joint piece 12a. Therefore, the second joint piece 12c can bend in two directions perpendicular to the third joint piece 12e.

[0035] The third joint piece 12e is connected to the first end portion 13b of the sliding shaft portion 13 at the end opposite to the end connected to the second joint piece 12c.

[0036] The driving shaft portion 4 has a gripping portion 11 for the user to grip connected to its lower end. The gripping portion 11 is an input portion where the user inputs force. Then, the movements of the user's hand and arm are transmitted to the driving shaft portion 4 through the gripping portion 11, and the driving shaft portion 4 itself also rotates and moves horizontally. As can be understood from the later-described first training device 100, the gripping portion 11 connected to the driving shaft portion 4 is an annular body, particularly a rectangular ring as it is gripped by the fingers of the hand. As shown in FIGS. 6 to 11, the gripping portion 11 is rectangular (quadrilateral) in plan view and forms a continuous ring without a break.

[0037] The intermediate shaft portion 5 rotates in conjunction with the rotation of the driving shaft portion 4. And a first rotation transmission portion 1K is provided which is suspended between the driving shaft portion 4 and the intermediate shaft portion 5 and transmits the mutual rotation of the driving shaft portion 4 and the intermediate shaft portion 5. The rotation of the driving shaft portion 4 is transmitted to the intermediate shaft portion 5 by the first rotation transmission portion 1K. Also, the force that causes the intermediate shaft portion 5 to try to rotate due to an external force acting on the sliding shaft portion 13 is transmitted to the driving shaft portion 4 by the first rotation transmission portion 1K. The driving shaft portion 4 and the intermediate shaft portion 5 are arranged parallel to each other.

[0038] The driving shaft portion 4 and the intermediate shaft portion 5 are rotatably supported by the inner housing 3, and the driving shaft portion 4 and the intermediate shaft portion 5 are connected and fixed by the inner housing 3, and the mutual horizontal movement between the driving shaft portion 4 and the intermediate shaft portion 5 is transmitted by the inner housing 3.

[0039] In the load transmission mechanism portion 1A for the training device, the first rotation transmission portion 1K includes a transmission chain 10 (shown by a thick broken line in FIGS. 1 to 5). Examples of the transmission chain 10 include a roller chain, a leaf chain, etc. For the suspension and meshing of the transmission chain 10 of the first rotation transmission portion 1K, a driving shaft sprocket 4C is provided on the driving shaft portion 4 and an intermediate shaft sprocket 5C is provided on the intermediate shaft portion 5. The first rotation transmission portion 1K may be a combination of a belt and a pulley (not shown) instead of adopting the transmission chain 10. Examples of the belt include a V-belt, a flat belt, a toothed belt, etc.

[0040] As shown in Fig. 1, the intermediate shaft portion 5 and the crankshaft portion 6 are in an orthogonal relationship, and a second rotation transmission portion 1M is provided between the intermediate shaft portion 5 and the crankshaft portion 6. The second rotation transmission portion 1M transmits the rotations of the intermediate shaft portion 5 and the crankshaft portion 6 to each other. The second rotation transmission portion 1M plays a role of transmitting rotation between two shafts that intersect at a right angle. Here, the two shafts refer to the space between the intermediate shaft portion 5 and the crankshaft portion 6.

[0041] In the first embodiment, the second rotation transmission portion 1M includes an intermediate shaft bevel gear 5d provided on the intermediate shaft portion 5 and a crankshaft bevel gear 6c provided on the crankshaft portion 6 and meshing with the intermediate shaft bevel gear 5d. The rotation operation of the intermediate shaft portion 5 is interlocked at a right angle with the crankshaft portion 6. As a mechanism of the second rotation transmission portion 1M that orthogonally connects the intermediate shaft portion 5 and the crankshaft portion 6, for example, mechanisms such as a combination of a crown gear and a spur gear, and a combination of a worm and a worm wheel can be cited.

[0042] The sliding shaft portion 13 is arranged at a position parallel to the intermediate shaft portion 5 in the outer housing 2. The rotation and horizontal movement in the axial direction of the crankshaft portion 6 are converted into an up-and-down movement on the paper surface via the connecting joint portion 12 and transmitted to the sliding shaft portion 13. The sliding shaft portion 13 is connected to a load applying portion 130 that can adjust the magnitude of the load of the first training device 100 (see Figs. 6 to 11).

[0043] As the crankshaft portion 6 rotates and horizontally moves in the axial direction, the connecting joint portion 12 is moved, and a vertical movement is generated in the sliding shaft portion 13 via the connecting joint portion 12. That is, the axial rotation of the driving shaft portion 4 and the horizontal movement of the crankshaft portion 6 in the axial direction cause the sliding shaft portion 13 to move vertically, and the load applying portion 130 (weight 131) of the first training device 100 (see FIGS. 6 to 11) connected to the sliding shaft portion 13 moves vertically. In the load transmission mechanism portion 1A for the training device, the first rotation transmission portion 1K includes a driving shaft sprocket 4c provided on the driving shaft portion 4, an intermediate shaft sprocket 5c, and a transmission chain 10 suspended between the driving shaft sprocket 4c and the intermediate shaft sprocket 5c. The second rotation transmission portion 1M includes an intermediate shaft bevel gear 5d provided on the intermediate shaft portion 5 and a crankshaft bevel gear 6c that meshes with the intermediate shaft bevel gear 5d. The rotation of the driving shaft portion 4 is transmitted to the crankshaft portion 6 by the first rotation transmission portion 1K and the second rotation transmission portion 1M. Since the driving shaft portion 4 and the crankshaft portion 6 are pivotally supported in the inner housing 3, the horizontal movement of the driving shaft portion 4 in the axial direction of the crankshaft portion 6 is transmitted to the crankshaft portion 6 via the inner housing 3.

[0044] In the load transmission mechanism portion 1A for the training device, the connecting joint portion 12 causes the sliding shaft portion 13 to move forward and backward due to the rotation and horizontal movement in the axial direction of the crankshaft portion 6. Thus, the driving shaft portion 4 (grasping portion 11) is biased by a force proportional to the load of the load applying portion 130 (both see FIGS. 6 to 11). Then, when the user axially rotates the grasping portion 11, which is the input portion, with respect to the driving shaft portion 4 against the rotational biasing force, the sliding shaft portion 13 is drawn into the outer housing 2, and the load applying portion 130 connected to the sliding shaft portion 13 is pulled (lifted). Further, when the user horizontally moves the grasping portion 11 with respect to the driving shaft portion 4 in the axial direction of the crankshaft portion 6 against the biasing force, the sliding shaft portion 13 is drawn into the outer housing 2, and the load applying portion 130 connected to the sliding shaft portion 13 is pulled (lifted).

[0045] <Explanation of the operation of the load transmission mechanism portion 1A for the training device> Referring to FIGS. 2 to 5, the operation of the load transmission mechanism unit 1A for the training device will be described. FIG. 2 is a diagram showing the initial posture in the operation of the load transmission mechanism unit 1A for the training device (hereinafter referred to as the load transmission mechanism unit 1A), FIG. 3 is a diagram for explaining the operation accompanying the rotation of the driving shaft portion 4 of the load transmission mechanism unit 1A, FIG. 4 is a diagram for explaining the operation accompanying the horizontal movement of the driving shaft portion 4 of the load transmission mechanism unit 1A, and FIG. 5 is a diagram for explaining the operation accompanying the rotation and horizontal movement of the driving shaft portion 4 of the load transmission mechanism unit 1A.

[0046] In the initial posture in the operation of the load transmission mechanism unit 1A shown in FIG. 2, the driving shaft portion 4 is located at the far right in FIG. 2, and the connecting joint portion 12 is in the most extended state upward. That is, in the initial posture in the operation of the load transmission mechanism unit 1A, the second end portion 13c of the sliding shaft portion 13 is at the highest position.

[0047] The load transmission mechanism unit 1A shown in FIG. 3 shows a state where it stays at the position of the driving shaft portion 4 in the initial posture shown in FIG. 2 and only rotates. The grip portion 11 is rotated by the user, and the rotation of the grip portion 11 becomes the rotation of the driving shaft portion 4. This rotation is transmitted to the intermediate shaft portion 5 via the first rotation transmission portion 1K, and further transmitted to the crank shaft portion 6 via the second rotation transmission portion 1M. As the crank shaft portion 6 rotates, the first universal joint 12b and the second universal joint 12d of the connecting joint portion 12 bend in the circumferential direction of the crank shaft. Due to this bending, the connecting joint portion 12 curves inside the load transmission mechanism unit 1A and pulls the sliding shaft portion 13 into the load transmission mechanism unit 1A, lifting the load application portion 130 (weight 131) of the first training device 100 (see FIGS. 6 to 11) connected to the sliding shaft portion 13. Therefore, a load acts on the load application portion 130 (weight 131) with respect to the rotation of the grip portion 11 by the user.

[0048] The load transmission mechanism section 1A shown in Fig. 4 shows a state in which the driving shaft section 4 is horizontally moved to the left in the figure without rotating it from the position of the driving shaft section 4 in the initial posture shown in Fig. 2. When the gripping section 11 is horizontally moved to the left in the figure by the user, the horizontal movement of the gripping section 11 becomes the horizontal movement of the driving shaft section 4, and the horizontal movement is transmitted to the intermediate shaft section 5 and the crank shaft section 6 via the inner housing 3. Along with the horizontal movement of the crank shaft section 6, the first universal joint 12b and the second universal joint 12d of the connecting joint section 12 bend in the axial direction of the crank shaft section 6. Due to the bending, the connecting joint section 12 curves inside the load transmission mechanism section 1A and pulls the sliding shaft section 13 into the load transmission mechanism section 1A, lifting the load application section 130 (weight 131) of the first training device 100 (see Figs. 6 to 11) connected to the sliding shaft section 13. Therefore, a load acts on the load application section 130 (weight 131) with respect to the horizontal movement of the gripping section 11 by the user.

[0049] The load transmission mechanism section 1A shown in Fig. 5 shows a state in which the driving shaft section 4 is horizontally moved to the left in the figure while being rotated from the position of the driving shaft section 4 in the initial posture shown in Fig. 2. When the gripping section 11 is rotated and horizontally moved to the left in the figure by the user, the rotation and horizontal movement of the gripping section 11 become the rotation and horizontal movement of the driving shaft section 4. The rotation of the gripping section 11 is transmitted to the intermediate shaft section 5 via the first rotation transmission section 1K, and further transmitted to the crank shaft section 6 via the second rotation transmission section 1M. The horizontal movement of the gripping section 11 is transmitted to the intermediate shaft section 5 and the crank shaft section 6 via the inner housing 3. Along with the rotation and the horizontal movement of the crank shaft section 6, the first universal joint 12b and the second universal joint 12d of the connecting joint section 12 bend in the circumferential direction and the axial direction of the crank shaft. Due to the bending, the connecting joint section 12 curves inside the load transmission mechanism section 1A and pulls the sliding shaft section 13 into the load transmission mechanism section 1A, lifting the load application section 130 (weight 131) of the first training device 100 (see Figs. 6 to 11) connected to the sliding shaft section 13. Therefore, a load acts on the load application section 130 (weight 131) with respect to the rotation and horizontal movement of the gripping section 11 by the user.

[0050] The operation of rotating and horizontally moving the gripping part 11 consumes more energy by pulling the sliding shaft part 13 more into the inside of the load transmission mechanism part 1A with a greater degree of bending of the connecting joint part 12 compared to the case of rotating or horizontally moving the gripping part 11 only.

[0051] In addition, in the state of the load transmission mechanism part 1A shown in FIGS. 3, 4, and 5, a force (restoring force) that tries to return to the initial state shown in FIG. 2 acts on the gripping part 11 due to the load of the load applying part 130 (weight 131). The user will either maintain the states of FIGS. 3, 4, and 5 against this restoring force, further rotate or horizontally move the gripping part 11, or return it to the initial posture state.

[0052] <The first training instrument 100> The configuration of the first training instrument 100 is shown in FIGS. 6 to 7. The first training instrument 100 is an instrument equipped with a load transmission mechanism part 1A.

[0053] <Explanation of the configuration of the first training instrument 100> As shown in FIGS. 6 to 11, the first training instrument 100 includes a seating part 110, a framework 120 that supports the seating part 110, a load applying part 130 provided on the framework 120 with an adjustable load magnitude, two guide columns 140 vertically fixed to the framework 120 at a predetermined interval so that the seating part 110 is at its central position, two load transmission mechanism parts 1A each having one end side movably up and down and rotatably horizontally fitted thereto, a gripping part 11 connected to the lower end part of the gripping parts 11 of the two load transmission mechanism parts 1A, and a tension member 180 having one end connected to the load applying part 130 and the other end wound around a direction-changing guide pulley 170 provided on the framework 120 and connected to the other end side of the guide column 140 of the load transmission mechanism part 1A. Inside the load transmission mechanism part 1A, it is connected to the other end side of the tension member 180, and a load is applied to the rotation about the axis of the gripping part 11 by the load applying part 130.

[0054] The seating portion 110 includes a seat 111 suitable for a user using the first training device 100 to sit facing the front direction, and a seat support column 112 vertically provided on the lower surface of the seat 111.

[0055] The frame 120 stably installs the first training device 100 on the floor surface, serves as the skeleton of the entire first training device 100, and the seating portion 110, the load applying portion 130, the two guide columns 140, etc. are fixed thereto. The seat support column 112 is inserted into a hole vertically penetrating forward from the central portion of the lower surface of the frame 120, and the seating portion 110 is supported by the frame 120. The frame 120 includes a thigh pressing portion 121 for preventing the thighs of the user sitting on the seat 111 from rising. The thigh pressing portion 121 is preferably provided so that the user can form an appropriate arch on the back during training.

[0056] The load applying portion 130 is capable of adjusting the magnitude of the load provided on the frame 120, and includes a weight 131 composed of a plurality of plate-shaped plates which are metal weight members, a weight guide column 132 for supporting the weight 131 on the frame 120 so as to be vertically movable, and a clamp (not shown) capable of connecting and disconnecting the weights 131 from each other. The number of the weights 131 is increased or decreased to adjust the load (weight) of the load applying portion 130. The pair of columnar weight guide columns 132 are vertically fixed to the frame 120 at the rear of the seating portion 110 with a predetermined left-right interval between the upper and lower ends, and each plate-shaped plate of the weight 131 is inserted through its through hole and laminated, and is supported on the frame 120 so as to be vertically movable.

[0057] The two load transmission mechanism parts 1A are respectively fitted to the two guide columns 140 so as to be vertically movable and horizontally rotatable by the connecting parts 7. The gripping parts 11 connected to the main shaft parts 4 of the load transmission mechanism parts 1A are annular handles that serve as input parts for the user to grip with their hands and input force. Each gripping part 11 can rotate about its axis horizontally with respect to the load transmission mechanism part 1A. Also, the gripping part 11 can swing. In the initial state (see FIGS. 6 and 7), each gripping part 11 is in a position where the back of the user's hand holding the gripping part 11 faces the outside of the first training device 100. In the initial state, each gripping part 11 is located further above the position of the hand when the user sitting on the seat 111 extends their arm upward. And the user can lower the load transmission mechanism part 1A through the gripping part 11. At this time, the user can open both arms outward from the center (the line in the exact middle of the left and right sides of the body) to the chest (see FIGS. 8 and 9).

[0058] The first training device 100 shown in FIGS. 6, 7, 8, and 9 is used by operating both arms simultaneously, while the first training device 100 shown in FIGS. 10 and 11 is used by operating one arm at a time. The tension members 180 of the first training device 100 shown in FIGS. 6, 7, 8, and 9 are formed by using two ropes or wires of the same length. One end of each of the two tension members 180 is connected to the weight 131, and the other end of each is connected to the load transmission mechanism part 1A. The two tension members 180 with one end fixed to the weight 131 are respectively wound around the direction-changing guide wheels 170. The direction-changing guide wheels 170 convert the downward load applied to the tension member 80 by the weight 131 into an upward load. In contrast, for the tension member 180 of the first training device 100 shown in FIGS. 10 and 11, a single rope or wire is used. Both ends of this single tension member 180 are respectively connected to two load transmission mechanism portions 1A. A single movable pulley is provided in a box portion 133 provided at the upper end of the weight 131, and the tension member 180 is wound around this movable pulley. When one of the two load transmission mechanism portions 1A is pulled down, the tension member 180 lifts the weight 131 upward together with the movable pulley with the other load transmission mechanism portion 1A as a fulcrum.

[0059] In the initial state shown in FIGS. 6 and 7, the rotation of the load transmission mechanism portion 1A is restricted. In contrast, in the states of FIGS. 8 and 9, the user can rotate the load transmission mechanism portion 1A to a predetermined angle against the force that rotationally biases the load transmission mechanism portion 1A so as to face the front direction. The force that rotationally biases the load transmission mechanism portion 1A so as to face the front direction is proportional to the load of the load applying portion 130 and approximately inversely proportional to the vertical position of the load transmission mechanism portion 1A.

[0060] As shown in FIGS. 10 and 11, in the first training device 100, it is also possible to perform training by making the lifting and lowering operations of the left and right load transmission mechanism portions 1A different. The load transmission mechanism portion 1B for a training device (hereinafter referred to as the load transmission mechanism portion 1B) according to the second embodiment to be described later, the load transmission mechanism portion 1D for a training device (hereinafter referred to as the load transmission mechanism portion 1D) according to the fourth embodiment, and the load transmission mechanism portion 1E for a training device (referred to as the load transmission mechanism portion 1E) according to the fifth embodiment can be attached to and used with the first training device 100 in place of the load transmission mechanism portion 1A. The two load transmission mechanism portions 1B, 1D, 1E are each fitted to the two guide columns 140 of the first training device 100 by a connecting portion 7 so as to be vertically movable and rotatable in the horizontal direction, similarly to the load transmission mechanism portion 1A.

[0061] <Explanation of the usage method of the first training device 100> The typical usage method of the first training device 100 will be described in sequence. First, the weight 131 is arranged according to the load considering the user's muscle strength, purpose, etc. The user sits on the seat 111 facing forward and adjusts and fixes the seat 111 to an appropriate height so that the soles of the feet touch the floor surface. Further, the thigh pressing part 121 is adjusted and fixed to an appropriate height so as to contact the upper surface of the thigh of the user sitting on the seat 111.

[0062] Next, the user stands up, aligns with the initial state of the load transmission mechanism part 1A facing the front direction (see FIGS. 6 and 7), turns the back of the hands towards the left and right of the first training device 100, and grips the holding parts 11 respectively. Then, while gripping with the hand that extends the holding part 11 upward and also pulling the holding part 11 downward, the user sits on the seat 111 facing the front direction.

[0063] Next, the user resists the rotational biasing force acting on the holding part 11 by the force proportional to the load of the load applying part 130, twists both upper arms outward, and axially rotates each holding part 11 horizontally with respect to the load transmission mechanism part 1A, so that the back of the hand holding each holding part 11 faces the front direction of the first training device 100 respectively. By taking the position of this "twisting motion", both the flexor and extensor muscles are "relaxed" and the shoulders and arms are in a relaxed state. Also, due to the load of the load applying part 130, the holding part 11 is biased upward, and the muscles such as near the scapular girdle are moderately "stretched".

[0064] Next, the user bends both arms against the load applied by the load applying unit 130 so that the muscles near the scapular girdle that are moderately "extended" cause a "reflection", and "shortens" the muscles to lower the gripping unit 11. At this time, while adding the actions of "relaxing" and "extending" by twisting the upper arms outward, the user lowers the gripping unit 11 with both hands. By twisting the upper arms outward, each gripping unit 11 is axially rotated further in the outer horizontal direction with respect to the load transmission mechanism unit 1A, thereby lifting the weight 131 and reducing the load in the initial action of lowering both arms. In this way, when bending both arms to lower the gripping unit 11 and "shortening" the muscles, by further twisting the upper arms outward and causing the appropriate "shortening" timing while adding the actions of "relaxing" and "extending", each muscle group can obtain the timing of "relaxation - extension - shortening" and operate in a coordinated manner.

[0065] Furthermore, the user can apply an appropriately adjusted load by the load applying unit 130 in each of the three directions of downward, rotational, and lateral directions, that is, by lowering both arms and further stretching them outward while twisting the upper arms outward. Therefore, each muscle group that is moderately "stretched and contracted" can obtain the timing of "relaxation - extension - shortening" and operate in a coordinated manner. When stretching the upper arms outward, an appropriately adjusted load by the load applying unit 130 (weight 131) is applied to the horizontal movement of the gripping unit 11 (main drive shaft unit 4).

[0066] When the user bends both arms and pulls down the gripping part 11, against the force that rotationally biases each load transmission mechanism part 1A to face the front direction, the user gradually spreads both arms outward so that each load transmission mechanism part 1A faces outward. Since the force that rotationally biases the load transmission mechanism part 1A to face the front direction is approximately inversely proportional to the position (height) of the load transmission mechanism part 1A, as the user bends both arms and pulls down the gripping part 11, the resistance to spreading both arms outward decreases. Therefore, when the user bends both arms and pulls down the gripping part 11, the user can smoothly perform the operation of gradually spreading both arms outward while pulling down the gripping part 11 by outputting a substantially constant muscular force to spread both arms outward, and it becomes possible to prevent co-contraction of the agonist and antagonist muscles.

[0067] Next, after the user pulls down each gripping part 11 to approximately shoulder height, while following each biasing force due to the load of the load applying part 130, the user twists the upper arms inward and extends both arms while closing both arms inward, so as to slowly return the back of the hand to the state of sitting following the gripping part 11. Thereby, one cycle of the training ends. Then, this training is repeated for an appropriate number of cycles.

[0068] <Load transmission mechanism part 1B for a training device according to the second embodiment> Next, with reference to FIGS. 12 and 13, a load transmission mechanism part 1B for a training device according to the second embodiment (hereinafter referred to as the load transmission mechanism part 1B) will be described. FIG. 12 is a front view for explaining the internal configuration of the load transmission mechanism part 1B according to the second embodiment, and FIG. 13 is a top view for explaining the internal configuration of the load transmission mechanism part 1B. The load transmission mechanism part 1B is connected to and used with the aforementioned first training device 100 and a second training device 201 described later.

[0069] The load transmission mechanism unit 1B has a different configuration of the housing unit 22 (see FIG. 12) compared to the load transmission mechanism unit 1A according to the first embodiment. The housing unit 22 does not have a two-part configuration like the outer housing 2 and the inner housing 3 of the load transmission mechanism unit 1A according to the first embodiment, and the housing unit 22 serves as the housing of the load transmission mechanism unit 1B. Hereinafter, in the description of the load transmission mechanism unit 1B, for the configurations common to the load transmission mechanism unit 1A according to the first embodiment, the same reference numerals as those used in the description of the load transmission mechanism unit 1A in FIGS. 12 and 13 are attached and the description thereof is omitted, and only the configurations different from the load transmission mechanism unit 1A according to the first embodiment will be described in detail.

[0070] The driving shaft portion 4 is connected to a gripping portion 11 held by a user, which is an input portion where the user inputs force, or a footrest portion 271 of the user at an end portion, and rotates together with the gripping portion 11 or the footrest portion 271. Note that FIGS. 12 and 13 show an example in which the gripping portion 11 is connected to the driving shaft portion 4 as the input portion. When the footrest portion 271 is used instead of the gripping portion 11 as the input portion, the end portion of the driving shaft portion 4 is projected to the same side as the second end portion 13c of the sliding shaft portion 13, and the footrest portion 271 is connected to the end portion of the driving shaft portion 4 projected to the same side as the second end portion 13c of the sliding shaft portion 13. The first rotation transmission portion 1K includes an intermediate shaft portion 5 that rotates in conjunction with the rotation of the driving shaft portion 4, and is suspended between the driving shaft portion 4 and the intermediate shaft portion 5 to transmit the mutual rotation between the driving shaft portion 4 and the intermediate shaft portion 5. The second rotation transmission portion 1M is provided between the intermediate shaft portion 5 and a crank shaft portion 6 orthogonal to the intermediate shaft portion 5, and transmits the mutual rotation between the intermediate shaft portion 5 and the crank shaft portion 6.

[0071] The connection fixing portion 23 connects the driving shaft portion 4, the intermediate shaft portion 5, and the crank shaft portion 6, and transmits the mutual horizontal movement between the driving shaft portion 4, the intermediate shaft portion 5, and the crank shaft portion 6. The sliding shaft portion 13 is allowed to be displaced in a direction orthogonal to the axial direction of the crank shaft portion 6, and is urged in a linear direction by an external force. The connecting joint portion 12 allows rotation having a first central axis 12g orthogonal to the axial direction of the sliding shaft portion 13 and rotation having a second central axis 12h orthogonal to the first central axis 12g by a combination of a plurality of connecting piece portions 30, and one of the plurality of connecting piece portions 30 is connected to the sliding shaft portion 13.

[0072] The connecting joint portion 12 allows rotation having a central axis orthogonal to the axial direction of the crankshaft portion 6 in a connecting piece portion 30 different from the one connecting piece portion 30 connected to the sliding shaft portion 13, and is connected to the crankshaft portion 6. The rotation and axial movement of the crankshaft portion 6 are converted into vertical displacement of the sliding shaft portion 13. When the user horizontally moves the main shaft portion 4 through the gripping portion 11 or the footrest portion 271, an external force applied to the sliding shaft portion 13 is transmitted to the gripping portion 11 or the footrest portion 271 through the main shaft portion 4.

[0073] The main shaft portion 4, the intermediate shaft portion 5, the crankshaft portion 6, and the sliding shaft portion 13 of the load transmission mechanism portion 1B are rotatably housed in the housing portion 22. The main shaft portion 4, the intermediate shaft portion 5, and the crankshaft portion 6 are connected by a connecting and fixing portion 23, and these are integrally horizontally moved in the axial direction of the crankshaft portion 6. The connecting and fixing portion 23 includes a first fixing piece 23a and a second fixing piece 23b. The first fixing piece 23a and the second fixing piece 23b are plate-shaped with flat surfaces, and the first fixing piece 23a and the second fixing piece 23b are connected so as to be orthogonal (see FIG. 12).

[0074] The first fixed piece 23a is provided with a main shaft bearing 23c and an intermediate shaft bearing 23d on its surface. The main shaft bearing 23c rotatably supports the main shaft portion 4, and the intermediate shaft bearing 23d rotatably supports the intermediate shaft portion 5. Since the surface of the first fixed piece 23a is a flat plate shape, the main shaft bearing 23c and the intermediate shaft bearing 23d are held perpendicular to the surface of the first fixed piece 23a, and the main shaft portion 4 and the intermediate shaft portion 5 are kept parallel. The second fixed piece 23B is provided with a crankshaft bearing 23e, and the crankshaft bearing 23e rotatably supports the crankshaft portion 6. Since the surface of the second fixed piece 23B is a flat plate shape, the crankshaft portion 6 is held perpendicular to the surface of the second fixed piece 23b. Since the first fixed piece 23a and the second fixed piece 23b are connected so as to be orthogonal to each other, the crankshaft portion 6 is installed perpendicular to the main shaft portion 4 and the intermediate shaft portion 5. The housing portion 22 is provided with a sliding bearing 13a, and the sliding bearing 13a supports the sliding shaft portion 13 so as to be displaceable in the vertical direction. The vertical direction here is a direction parallel to the axial direction of the main shaft portion 4 and the intermediate shaft portion 5, and is a direction orthogonal to the axial direction of the crankshaft portion 6.

[0075] The linear motion guide portion 20 described later is provided inside the housing portion 22, and the linear motion guide portion 20 guides the slider 20c inside the housing portion 22 to perform a linear movement parallel to the axial direction of the crankshaft portion 6. The first fixed piece 23a is fixed to the linear motion guide portion 20 and provided inside the housing portion 22. The linear motion guide portion 20 includes a first guide 20a, a second guide 20b, a slider 20c, and a guide support base 20d. The first guide 20a and the second guide 20b are fixed to the guide support base 20d so that their longitudinal directions coincide with each other in the axial direction of the crankshaft portion 6 and are parallel to each other, and the guide support base 20d is fixed inside the housing portion 22. The slider 20c is provided so as to straddle the first guide 20a and the second guide 20b, and is guided by the first guide 20a and the second guide 20b to slide (move).

[0076] When the user horizontally moves the gripping portion 11 in the axial direction of the crankshaft portion 6, the horizontal movement of the gripping portion 11 becomes the horizontal movement of the main shaft portion 4, and the horizontal movement of the main shaft portion 4 is transmitted to the intermediate shaft portion 5 and the crankshaft portion 6 via the connection fixing portion 23.

[0077] According to the load transmission mechanism part 1B of the second embodiment, compared with the load transmission mechanism part 1A of the first embodiment, since it does not have the inner housing 3, the configuration that bears the housing of the load transmission mechanism part 1B can be simplified, and the overall weight of the load transmission mechanism part 1B can be reduced.

[0078] Next, with reference to FIGS. 31 and 32, a first modification 1Ba and a second modification 1Bb of the load transmission mechanism part 1B of the second embodiment will be described. FIG. 31 is a diagram for explaining the first modification 1Ba of the load transmission mechanism part 1B for a training device according to the second embodiment, and FIG. 32 is a diagram for explaining the second modification 1Bb of the load transmission mechanism part 1B for a training device according to the second embodiment.

[0079] <First Modification 1Ba of the Load Transmission Mechanism Part 1B for a Training Device According to the Second Embodiment> The first modification 1Ba of the load transmission mechanism part 1B will be described with reference to FIG. 31. In FIG. 31, for the common parts between the first modification 1Ba (see FIG. 31) and the load transmission mechanism part 1B (see FIGS. 12 and 13), the reference numerals used for the load transmission mechanism part 1B (see FIGS. 12 and 13) are attached, and the description thereof is omitted. Hereinafter, only the parts different from the load transmission mechanism part 1B in the first modification 1Ba will be described. The difference between the first modification 1Ba and the load transmission mechanism part 1B lies in the configuration of the connecting joint part 12. The connecting joint part 12 of the load transmission mechanism part 1B includes a first joint piece 12a, a second joint piece 12c, and a third joint piece 12e that are connecting piece parts 30. In contrast, the first modification 1Ba includes a ball joint 42 instead of the second joint piece 12c. Therefore, the connecting joint part 12 of the first modification 1Ba includes a first joint piece 12a, which is a connecting piece part 30, a ball joint 42, and a third joint piece 12e. The connecting joint part 12 allows rotation having a central axis 12g orthogonal to the axial direction of the sliding shaft part 13 and rotation in a direction orthogonal to the central axis 12g by a combination of a plurality of connecting piece parts 30, and one (30(12e)) of the plurality of connecting piece parts 30 is connected to the sliding shaft part 13.

[0080] The first joint piece 12a and the ball joint 42 are connected by a first universal joint 12b which is a universal joint 40(41). The ball joint 42 and the third joint piece 12e are connected by a second universal joint 12d which is a universal joint 40(41). The first universal joint 12b and the second universal joint 12d of the universal joint 40 employ a connecting rod 41 (see FIG. 30).

[0081] A ball joint is composed of a ball stud with a round bar attached to a metal ball and a socket that makes spherical contact with it, and is a joint that can rotate in any direction and has high rigidity in the translational direction. Examples of ball studs include link balls and tribological joints. As shown in FIG. 31, the first joint piece 12a is rotatably connected to the crankshaft portion 6 about a fourth central axis 12k as the rotation center. The first universal joint 12b is rotatably connected to the first joint piece 12a about a third central axis 12j as the rotation center. The first universal joint 12b and the second universal joint 12d are rotatably connected in any direction via the ball joint 42. The second universal joint 12d is rotatably connected to the third joint piece 12e about a first central axis 12g as the rotation center. The third joint piece 12e is rotatably connected to the lower end portion of the sliding shaft portion 13 about the central axis of the sliding shaft portion 13. Thereby, the connecting joint portion 12 can smoothly convert the horizontal movement in the axial direction of the crankshaft portion 6 and the rotation about the crankshaft portion 6 into the reciprocating movement in the vertical direction of the sliding shaft portion 13.

[0082] By using the ball joint 42 in a part of the connecting piece portion 30, the connecting joint portion 12 of the first modification 1Ba has a smoother bending state, and can transmit the rotation and horizontal movement of the driving shaft portion 4 to the sliding shaft portion 13 more smoothly. Note that the connecting joint portion 12 of the first modification 1Ba can be used as the connecting joint portion 12 of the load transmission mechanism portion 1A according to the first embodiment, the load transmission mechanism portion 1C according to the third embodiment, the load transmission mechanism portion 1D according to the fourth embodiment, and the load transmission mechanism portion 1E according to the fifth embodiment. In this case, the load transmission mechanism parts 1A, 1C, 1D, and 1E can obtain the same effects as those of the first modification example 1Ba. By using the ball joint 42 for a part of the connecting piece part 30, the bending state of the connecting joint part 12 becomes smoother, and the rotation and horizontal movement of the driving shaft part 4 can be transmitted to the sliding shaft parts 13, 14, and 15 more smoothly.

[0083] <Second Modification Example 1Bb of the Load Transmission Mechanism Part 1B for the Training Instrument According to the Second Embodiment> Next, a second modification example 1Bb of the load transmission mechanism part 1B will be described with reference to FIG. 32. In FIG. 32, for the common parts between the second modification example 1Bb (see FIG. 32) and the load transmission mechanism part 1B (see FIGS. 12 and 13), the reference numerals used for the load transmission mechanism part 1B (see FIGS. 12 and 13) are attached, and the description thereof is omitted. Hereinafter, only the parts different from the load transmission mechanism part 1B in the second modification example 1Bb will be described.

[0084] In the crankshaft part 9 of the second modification example 1Bb and the crankshaft part 6 of the load transmission mechanism part 1B, the connection positions with the connecting joint part 12 are different. The distance between the base end part of the crankshaft part 9 of the second modification example 1Bb and the connection position of the connecting joint part 12 is larger than the distance between the base end part of the crankshaft part 6 of the load transmission mechanism part 1B and the connection position of the connecting joint part 12 (see FIGS. 12 and 32). This difference appears in the difference in the initial postures between the second modification example 1Bb and the load transmission mechanism part 1B. Specifically, the initial posture of the second modification example 1Bb is the state where the driving shaft part 4 (the gripping part 11) is located at the far left in FIG. 32, and the initial posture of the load transmission mechanism part 1B is the state where the driving shaft part 4 (the gripping part 11) is located at the far right in FIG. 12.

[0085] Furthermore, between the second modification 1Bb and the load transmission mechanism portion 1B, the directions of horizontal movement to which the load on the driving shaft portion 4 is applied are different. When the load transmission mechanism portion 1B moves from the initial posture (the rightmost in FIG. 12) in the direction in which the driving shaft portion 4 (the gripping portion 11) moves away from the sliding shaft portion 13 (the left direction in FIG. 12), a load in the direction opposite to the moving direction (the right direction in FIG. 12) is applied. And when the driving shaft portion 4 (the gripping portion 11) moves in the direction approaching the sliding shaft portion 13 (the right direction in FIG. 12), a load in the same direction as the moving direction (the right direction in FIG. 12) is applied.

[0086] On the other hand, when the second modification 1Bb moves from the initial posture (the leftmost in FIG. 32) in the direction in which the driving shaft portion 4 (the gripping portion 11) approaches the sliding shaft portion 13 (the right direction in FIG. 32), a load in the direction opposite to the moving direction (the left direction in FIG. 32) is applied. And when the driving shaft portion 4 (the gripping portion 11) moves in the direction away from the sliding shaft portion 13 (the left direction in FIG. 32), a load in the same direction as the moving direction (the left direction in FIG. 32) is applied.

[0087] In the second modification 1Bb and the load transmission mechanism portion 1B, since the directions in which the loads are applied for the same operation are exactly opposite, various types of muscle strength training can be performed by using both of them in combination.

[0088] <Load transmission mechanism portion 1C for training equipment according to the third embodiment> Referring to FIGS. 14 to 16 and FIG. 18, the configuration and operation of the load transmission mechanism portion 1C for a training device according to the third embodiment (hereinafter referred to as the load transmission mechanism portion 1C) will be described. FIG. 14 is a diagram for explaining the configuration of the load transmission mechanism portion 1C, FIG. 15 is a first diagram for explaining the operation involving rotation and parallel movement of the driving shaft portion 276 of the load transmission mechanism portion 1C, FIG. 16 is a second diagram thereof, and FIG. 18 is an enlarged view of the footrest portion 271 of the second training device 201. The load transmission mechanism portion 1C is connected to and used with the second training device 201 described later.

[0089] The load transmission mechanism section 1C has a footrest section 271, which serves as an input section for the user's force, connected to the driving shaft section 276. The load transmission mechanism section 1C differs from the driving shaft section 4 (see FIG. 1) of the load transmission mechanism section 1A according to the first embodiment in the configuration of the driving shaft section 276. The driving shaft section 276 has its end protruding on the same side surface as the sliding shaft section 13, and is different from the load transmission mechanism section 1A in that the footrest section 271 is connected to the end. In the following description of the load transmission mechanism section 1C, components common to the load transmission mechanism section 1A according to the first embodiment are denoted by the same reference numerals as those used in the description of the load transmission mechanism section 1A in FIGS. 14 to 16 and FIG. 18, and the description thereof is omitted. Only the configuration different from the load transmission mechanism section 1A according to the first embodiment will be described in detail.

[0090] The load transmission mechanism section 1C is used in a state where it is rotated 90 degrees from the load transmission mechanism section 1A (see FIG. 1) according to the first embodiment so that the axial direction of the crankshaft section 6 is substantially vertical. The driving shaft section 276 is located near the upper part 277 of the main body.

[0091] The user places either the left or right foot on the footrest section 271. The footrest section 271 has an area that is slightly larger than the size of the user's foot. The footrest section 271 includes a third rotating shaft 273, side plates 274a, and side plates 274b, and a connecting plate 275.

[0092] The driving shaft section 276 is connected to the center of the connecting plate 275 perpendicularly thereto. Flat side plates 274a and 274b, which are connected perpendicularly to the connecting plate 275, are provided at both ends of the connecting plate 275. The third rotating shaft 273 is rotatably and perpendicularly connected to the side plates 274a and 274b.

[0093] The third rotating shaft 273 is rotatably supported by a bearing 272 (see FIG. 18) provided on the back surface of the footrest section 271. Thereby, the footrest section 271 can rotate around the third rotating shaft 273. Further, the footrest section 271 can rotate around the driving shaft section 276.

[0094] That is, the footrest portion 271 can rotate about two different axes that are orthogonal to each other. Therefore, by providing the structure shown in FIGS. 14 and 18, the user has a wider degree of freedom in placing the feet, such as the direction of the feet and the bending angle of the feet, and can place the sole of the foot on the footrest portion 271 stress - free and push the footrest portion 271 with the foot at a desired angle. Thus, the user can apply a load to his own body including the feet by the second training device 201 in the form (angle and force) he desires.

[0095] <Explanation of the operation of the load transmission mechanism unit 1C for the training device according to the third embodiment> The user can perform various leg movements using the load transmission mechanism unit 1C. With reference to FIGS. 14 to 16, the operation of the load transmission mechanism unit 1C will be described below while showing an example of leg movement. As an example of leg movement, the operation of the load transmission mechanism unit 1C associated with the movement of the user's knee joint being flexed and extended will be described.

[0096] As the initial posture of the user, assume a posture in which the knee joint is flexed and the instep is directed straight upward and placed on the footrest portion 271 (see FIG. 19). The state of the footrest portion 271 at this time is such that, as shown in FIG. 14, the footrest portion 271 is located at the uppermost part of the load transmission mechanism unit 1C, and the direction of the footrest portion 271, and thus the direction of the user's foot, is in a state where the instep is directed straight upward. In the state shown in FIG. 14, the sliding shaft portion 13 protrudes outside the outer housing 2 to the maximum extent.

[0097] Next, while gradually extending the knee joint, the user rotates the leg by tilting the knee joint inward (see FIGS. 20 and 21). When the user extends the knee joint, the user pushes up the footrest portion 271 by pushing the leg diagonally upward, thereby moving the footrest portion 271 upward in parallel. When the knee joint is opened to the maximum, the user tilts the knee joint inward to the maximum (see FIG. 21). In the state of the footrest portion 271 at this time, as shown in FIG. 16, the footrest portion 271 is located at the uppermost part of the load transmission mechanism portion 1C, and the footrest portion 271 is in a state of rotating to the maximum around the axis of the main drive shaft portion 276. In the state shown in FIG. 16, the sliding shaft portion 13 is retracted into the outer housing 2 to the maximum extent.

[0098] In the state of the load transmission mechanism portion 1C, FIG. 15 shows a state in the middle of transitioning from the state shown in FIG. 14 to the state shown in FIG. 16.

[0099] In the load transmission mechanism portion 1C, by rotating the footrest portion 271, the rotation of the main drive shaft portion 276 is transmitted to the sliding shaft portion 13 via the first rotation transmission portion 1K, the second rotation transmission portion 1M, and the connecting joint portion 12. The sliding shaft portion 13 is displaced relative to the outer housing 2, and this displacement displaces the weight of the load applying portion 230 up and down. The user can perform the rotational movement of the footrest portion 271 while resisting the biasing force generated by the load applying portion 230.

[0100] Furthermore, in the load transmission mechanism portion 1C, by moving the footrest portion 271 upward in parallel in FIG. 14, the parallel movement of the main drive shaft portion 276 is transmitted to the sliding shaft portion 13 via the inner housing 3 and the connecting joint portion 12. The sliding shaft portion 13 is displaced relative to the outer housing 2, and this displacement displaces the weight of the load applying portion 230 up and down. The user can perform the parallel movement of the footrest portion 271 while resisting the biasing force generated by the load applying portion 230.

[0101] In the state of the load transmission mechanism unit 1C shown in FIG. 15, a force (restoring force) that attempts to return to the initial state shown in FIG. 14 acts on the footrest portion 271 due to the action of the weight of the load applying portion 130. The user will either maintain the state of FIG. 15 while resisting this restoring force, further rotate or translate the footrest portion 271 (see FIG. 16), or return to the state of the initial posture (see FIG. 14).

[0102] <Second training device 201> With reference to FIGS. 17 to 21, the configuration and operation of the second training device 201 will be described. FIG. 17 is a perspective view showing the appearance of the second training device 201. <Explanation of the configuration of the second training device 201> As shown in FIG. 17, the second training device 201 includes a seating portion 210 for the user to sit on, a load applying portion 230 for applying a load, a columnar guide post 240 extending in the vertical direction, a lifting portion 250 guided by the guide post 240 and movable up and down and rotatably connected, a gripping portion 260 provided on the lifting portion 250, a footrest portion 271 for placing the user's sole, slide rails 222a, 222b, a load transmission mechanism unit 1C including the footrest portion 271, a tension member 280 having one end connected to the lifting portion 250 and the other end connected to the load transmission mechanism unit 1C, and applying the load by the load applying portion 230 to the lifting portion 250 and the load transmission mechanism unit 1C. The lifting portion 250 can apply the load transmission mechanism unit 1A for training devices, the load transmission mechanism unit 1B for training devices, and the load transmission mechanism unit 1D for training devices and the load transmission mechanism unit 1E for training devices described later. The gripping portion 260 corresponds to the gripping portion 11 of the load transmission mechanism unit 1A for training devices, the load transmission mechanism unit 1B for training devices, and the load transmission mechanism unit 1D for training devices and the load transmission mechanism unit 1E for training devices described later, and is an input portion where the user inputs force.

[0103] Hereinafter, the second training device 201 will be described in detail with reference to the drawings. First, the structure of the second training device 201 will be described with reference to FIGS. 17 and 18. FIG. 17 is a perspective view of the second training device 201 as described above, and FIG. 18 is an enlarged view around the load transmission mechanism portion 1C.

[0104] As shown in FIG. 17, in the second training device 201, the seating portion 210 is supported by a framework 220 that serves as the basic frame of the second training device 201. The framework 220 forms the skeleton of the entire second training device 201 and has the function of stabilizing and installing the second training device 201 on the floor surface. The framework 220 can be formed by processing prismatic pipe materials, plate materials, etc. made of materials having a certain degree of rigidity such as steel, aluminum, stainless steel, resin, etc., and fixing them by bolts, welding, etc. The seating portion 210 includes a seat 211 on which the user sits and a seat support column 212 that supports the seat 211. The seat support column 212 is fixed to the framework 220. And the seat support column 212 holds the seat 211. Although not shown, the seat support column 212 is provided with a through hole for passing a tension member 280 in the front-rear direction. The seat 211 is a place where the user of the second training device 201 sits, and as shown in FIG. 17, it is a rectangle that is long in the left-right direction of the second training device 201. This is to enable the user to sit on either the right or left side of the seat 211. However, if the user can sit comfortably, it does not have to be a rectangle, and it can be a square or a circle.

[0105] As shown in FIG. 17, the seating portion 210 may be provided with a backrest 215 for the user to support the body during use between the rear of the seat 211 and the load applying portion 230.

[0106] The frame assembly 220 is provided with guide struts 240 extending in the vertical direction. As shown in FIG. 17, the guide struts 240 are provided at a position in front of the load applying portion 230 and behind the seating portion 210. As shown in FIG. 17, the frame assembly 220 includes, inside and behind the guide struts 240, an upper housing 225 for guiding the extending direction of the tension member 280. The lower end of the guide strut 240 is connected to the frame assembly 220, and the upper end is connected to and fixed to the upper housing 225.

[0107] As shown in FIG. 17, the guide strut 240 may be provided with a shock absorber 241. The shock absorber 241 is a member for mitigating the impact when the lifting / lowering portion 250 comes into contact with the upper housing 225 and the frame assembly 220. The shock absorber 241 may be realized by, for example, rubber, sponge, or the like.

[0108] The lifting / lowering portion 250 shown in FIG. 17 is attached to the guide strut 240. As shown in FIG. 17, the lifting / lowering portion 250 is attached to the guide strut 240 so as to be movable up and down relative to the guide strut 240. Although not shown, the lifting / lowering portion 250 has a through hole for inserting the guide strut 240. Therefore, the lifting / lowering portion 250 moves up and down along the guide strut 240. Further, the lifting / lowering portion 250 is attached to the guide strut 240 so as to be rotatable relative to the guide strut 240 about the guide strut 240 as a central axis. Therefore, a certain rigidity is required for the guide strut 240. Thus, the guide strut 240 may be made of, for example, stainless steel or the like. In the second training device 201, as the lifting / lowering portion 250, the load transmission mechanism portion 1A according to the above-described first embodiment, the load transmission mechanism portion 1B according to the second embodiment, the load transmission mechanism portion 1D according to the fourth embodiment described later, or the load transmission mechanism portion 1E according to the fifth embodiment may be applied.

[0109] As shown in FIG. 17, the load transmission mechanism portion 1C of the second training device 201 slides along the slide rails 222a and 222b. The slide rail 222a is suspended between the frame 220 of the second training device 201 and the frame 221 arranged in front of the frame 220, and is fixed at both ends. FIG. 18 is an enlarged view around the load transmission mechanism portion 1C of the second training device 201.

[0110] As shown in FIG. 17, the load applying portion 230 includes a pair of columnar weight guide columns 232 (only one is shown in FIG. 17 due to the paper surface relationship) whose upper and lower parts are fixed to the frame 220, and a weight configured to be vertically movable with respect to the weight guide column 232. The weight is provided with a through hole for inserting the weight guide column 232. The load applying portion 230 may be configured to be able to adjust the magnitude of the applied load. Specifically, the weight as a weight member may be a plate-like member, and the load may be adjusted by the number of sheets. Therefore, the load applying portion 230 may be provided with a clamp (not shown) that allows the weights to be connected and separated from each other. By setting each of the plate-like members of the weight to a fixed weight, the magnitude of the load can be changed step by step. Further, the weight guide column 232 may be provided with a shock absorber 231 to prevent the weight from colliding with the frame 220 with an impact greater than a certain level.

[0111] <Method of Using the Second Training Device 201> With reference to FIGS. 19 to 21, the method of using the second training device 201 will be described. FIGS. 19 to 21 are examples of movements using the second training device 201, and are left side views showing an example of foot movement.

[0112] As shown in FIG. 19, the user sits on the right side of the second training device 201, that is, on the right side of the seat 211 (the front side on the paper surface of FIG. 19). That is, the user sits on the seat 211 with the load transmission mechanism portion 1C on the left side and the backrest 215 on the right side. Then, as shown in FIG. 19, the user places the left foot on the footrest portion 271 of the load transmission mechanism portion 1C and bends the knee.

[0113] From this state, the user extends the left leg and presses the load transmission mechanism unit 1C. Then, as shown in FIG. 20, the load transmission mechanism unit 1C slides along the slide rails 222a and 222b. At this time, a load of the load applying unit 230 connected to the tension member 280 connected to the connection portion 279 is applied to the load transmission mechanism unit 1C toward the rear of the second training device 201 (leftward in the drawing of FIGS. 19 to 21).

[0114] Then, from the state where the leg is extended as shown in FIG. 20, the load transmission mechanism unit 1C is slowly slid along the slide rails 222a and 222b so as to return to the original position. This movement is repeatedly executed a certain number of times. That is, the user repeats the posture between FIGS. 19 and 20 a predetermined number of times.

[0115] In addition, as shown in FIG. 21, the user may press the load transmission mechanism unit 1C further by twisting the waist more than the state shown in FIG. 20. In this case, the waist can be trained while extending the leg. Such a posture is possible because the footrest portion 271 is configured to be rotatable with respect to the main body of the load transmission mechanism unit 1C. The user may perform the telescopic movement of the leg between FIGS. 19 and 20, or may perform the telescopic movement of the leg between FIGS. 19 and 21.

[0116] Also, although not shown, the user sits on the opposite side of the seat 211 in FIGS. 19 to 21 and on the left side of the second training device 201 (upper side in the drawing of FIGS. 19 to 21). That is, when the user sits on the seat 211 so that the load transmission mechanism unit 1C is on the left side of the user and the backrest 215 is located on the right side, the user can also perform the movement with the right leg.

[0117] Therefore, symmetrically, the user can perform the rotational movement around the waist while training both legs. Specifically, the user performs an operation of pushing out while spreading the legs and kicking the load transmission mechanism unit 1C. Therefore, it is a good example for strengthening the muscles around the hip joint, around the pelvis, the thigh, the knee, etc. of the user.

[0118] Each muscle group of the leg can obtain the timing of "relaxation - elongation - shortening" and perform operations in a coordinated manner. Specifically, in the state shown in FIG. 19, it can be said that no load from the load applying portion 230 is applied to the left leg and the muscle is in the "elongated" state. Also, the state shown in FIG. 19 is a state where the foot is merely placed on the footrest portion 271 and is in an overall relaxed state, so it can also be said that it is in a "relaxed" state.

[0119] From here, the user applies force to the foot and presses the load transmission mechanism portion 1C to which the load from the load applying portion 230 is applied. That is, in the process shown from FIG. 19 to FIG. 20 or FIG. 21, the load of the load applying portion 230 is applied to the user's left leg, and a "shortened" state can be generated in the muscle of the user's left leg. And in the state shown in FIG. 20 or FIG. 21, by rotating the footrest portion 271 with respect to the load transmission mechanism portion 1C, the connecting portion 279 is drawn into the load transmission mechanism portion 1C by the internal crank mechanism, thereby increasing the load from the load applying portion 230 applied to the foot. That is, as shown in FIG. 20 or FIG. 21, in a state where the load transmission mechanism portion 1C is rotated, a "relaxed" state can be generated in the user's foot.

[0120] And in the process of transitioning from the state shown in FIG. 20 or FIG. 21 to the state shown in FIG. 19, by returning the leg to the state of FIG. 19, an "elongated" state of the muscle can be generated. Therefore, by moving the load transmission mechanism portion 1C from the state shown in FIG. 19 to the state shown in FIG. 20 or FIG. 21 and then repeating the cycle of motion of returning to the state shown in FIG. 19, the timing of "relaxation - elongation - shortening" can be generated and operations can be performed in a coordinated manner. Regarding the movement of the leg, the state shown in FIG. 19 may be used as the initial state, or the state shown in FIG. 20 or FIG. 21 may be used as the initial state to perform one cycle of movement. However, since it is desirable to start the movement from a "relaxed" state, it is desirable to start the movement from the state shown in FIG. 20 or FIG. 21 with the cooperation of others, etc.

[0121] Moreover, by adopting a structure that trains one leg at a time instead of both legs, there is no need to prepare a load transmission mechanism section 1C for training both legs simultaneously. Therefore, the size of the second training device 201 can be made more compact than when configured to correspond to both feet (the width can be made narrower than when two load transmission mechanism sections 1C are provided for both legs), and the area of the space to be prepared as the installation space for the second training device 201 can be reduced. In the exercises shown in FIGS. 19 to 20, the user may sit on the seating portion 210 of the second training device 201 with the load transmission mechanism section 1C facing forward and the backrest 215 on the back and perform the exercise.

[0122] <Summary of the First Training Device 100 and the Second Training Device 201> The aforementioned first training device 100 and second training device 201 are devices that appropriately train the muscles of the shoulders, arms, back, legs, etc. through Initial Load Training (registered trademark). Here, Initial Load Training is defined as "training that utilizes the body changes to the position where reflex occurs and the accompanying changes in the center of gravity position, etc., promotes a series of actions of relaxation - extension - shortening of the prime mover muscles, and performs training while preventing the co - contraction of the antagonist muscles and the muscles that act antagonistically." Initial Load Training is completely different from Terminal Load Training, which hypertrophies the muscles while applying a load until the end and accompanied by muscle tension (hardening). It is necessary to perform Initial Load Training while grasping the overall movement image such as the point of applying the load, the point and angle of releasing the load, rhythm, and continuity of muscle output. Conventional load training has the problem that it is difficult to take appropriate actions and forms due to body balance and partial hardening, etc. However, the first training device 100 and the second training device 201 that realize Initial Load Training can easily induce training with ideal series of actions and forms.

[0123] By using the first training device 100 and the second training device 201 for initial load training, "force transmission between segments from the central part (the body trunk part) to the end part", that is, relaxing and putting the muscles of the human body, which have the characteristic of shrinking without trying to stretch themselves, into a relaxed state, applying an appropriate load to the muscle spindles and tendon organs, which are sensory receptors, starting from when the muscles are moderately stretched or when they are passively stretched, inducing the exertion of force when the muscles contract, and gradually reducing the load instantaneously and continuously, it is possible to obtain an active state in which other muscles of the human body, which have been said to be the only myocardium that does not cause co-contraction, do not cause co-contraction like the myocardium, and it becomes possible to promote and develop neuromuscular control.

[0124] The initial load training using the first training device 100 and the second training device 201 is a training that causes a reflex in the muscles by utilizing the load of the training device, enables the muscles that should originally function to function well, and enhances the functions of the muscles and nerves. A load is used as a catalyst to promote good-timing stretching, contraction, and shortening of the relaxed muscles. And through such training, a series of operations of relaxation - stretching - shortening are promoted, and further co-contraction is prevented, thereby enhancing the functions and coordination of the nerves and muscles, reducing the burden on the body such as muscle pain and fatigue, obtaining flexible and elastic muscles without accompanying muscle hardening. Also, it is effective in preventing lifestyle-related diseases such as diabetes and hypertension and promoting the healing of ligament injuries and fractures by promoting aerobic metabolism with less forced increase in heart rate and blood pressure, and can create a state beneficial to the body such as relieving stress on the nerves, muscles, and joints and removing waste products.

[0125] <Modification 1Ca of the load transmission mechanism part 1C for the training device according to the third embodiment> Next, with reference to FIG. 33, a modification 1Ca of the load transmission mechanism part 1C according to the third embodiment used in the second training device 201 will be described below. FIG. 33 is a diagram for explaining the modification 1Ca of the load transmission mechanism part 1C for the training device according to the third embodiment.

[0126] In FIG. 33, for the common part between Modification Example 1Ca (see FIG. 33) and the load transmission mechanism portion 1C (see FIGS. 14, 15, and 16), the reference numerals used for the load transmission mechanism portion 1C (see FIGS. 14, 15, and 16) are attached, and the description thereof is omitted. Hereinafter, only the parts different from the load transmission mechanism portion 1C (see FIGS. 14, 15, and 16) of Modification Example 1Ca (see FIG. 33) will be described. Referring to FIG. 33, Modification Example 1Ca of the load transmission mechanism portion 1C will be described. In Modification Example 1Ca, the moving direction of the footrest portion 271 (main drive shaft portion 4) is different from that of the load transmission mechanism portion 1C (see FIGS. 14, 15, and 16). In the load transmission mechanism portion 1C (see FIGS. 14, 15, and 16), the moving direction of the footrest portion 271 (main drive shaft portion 4) is perpendicular to the moving direction of the sliding shaft portion 13. That is, the angle formed by the moving direction of the footrest portion 271 (main drive shaft portion 4) and the moving direction of the sliding shaft portion 13 is 90 degrees.

[0127] On the other hand, in Modification Example 1Ca (see FIG. 33), the moving direction of the footrest portion 271 (main drive shaft portion 4) is 45 degrees with respect to the moving direction of the sliding shaft portion 13. That is, the angle formed by the moving direction of the footrest portion 271 (main drive shaft portion 4) and the moving direction of the sliding shaft portion 13 is 45 degrees.

[0128] In Modification Example 1Ca (see FIG. 33), since the footrest portion 271 (main drive shaft portion 4) can be moved obliquely upward, the load due to the weight of the footrest portion 271 and the main drive shaft portion 4 can be reduced, and the adjustment range can be increased from a small load to a large load, so that users such as children, women, and the elderly with weak muscle strength can also use it.

[0129] Also, when the footrest portion 271 (main drive shaft portion 4) is moved directly upward in the load transmission mechanism portion 1C, it may be difficult for force to be applied to the legs. However, in Modification Example 1Ca, since the footrest portion 271 (main drive shaft portion 4) is moved obliquely upward, effects such as easy application of force to the legs and easy muscle strength training can be obtained.

[0130] <Load Transmission Mechanism Portion 1D for Training Equipment According to the Fourth Embodiment> With reference to FIGS. 22 to 24, the configuration and operation of the load transmission mechanism portion 1D for a training device according to the fourth embodiment (hereinafter referred to as the load transmission mechanism portion 1D) will be described. FIG. 22 is a diagram for explaining the configuration of the load transmission mechanism portion 1D for a training device according to the fourth embodiment, FIG. 23 is a diagram for explaining the operation of the load transmission mechanism portion 1D for a training device according to the fourth embodiment, and FIG. 24 is a diagram for explaining the sliding bearing 14a used in the load transmission mechanism portion 1D for a training device according to the fourth embodiment. The load transmission mechanism portion 1D is connected to and used with the first training device 100 and the second training device 201.

[0131] The configuration of the sliding bearing 14a of the load transmission mechanism portion 1D is different from that of the sliding bearing 13a of the load transmission mechanism portion 1B according to the second embodiment. For this reason, the operation of the sliding shaft portion 14 of the load transmission mechanism portion 1D is different from that of the sliding shaft portion 13 of the load transmission mechanism portion 1B. Hereinafter, in the description of the load transmission mechanism portion 1D, for the configurations common to the load transmission mechanism portion 1B according to the second embodiment, the same reference numerals as those used in the description of the load transmission mechanism portion 1B in FIGS. 22 to 24 are given and the description thereof is omitted, and only the configurations and operations different from those of the load transmission mechanism portion 1B according to the second embodiment will be described in detail. Note that the sliding shaft portion 14 of the load transmission mechanism portion 1D corresponds to the sliding shaft portion 13 of the load transmission mechanism portion 1B, has the same shape as the sliding shaft portion 13, and its operation is different from that of the sliding shaft portion 13.

[0132] The sliding bearing 14a that pivotally supports the sliding shaft portion 14 has a bearing hole 14d that obliquely inserts the sliding shaft portion 14 with respect to the axial direction of the crank shaft portion 6 (see FIG. 24). As shown in FIG. 12, the sliding bearing 13a of the load transmission mechanism portion 1B for a training device according to the second embodiment includes a bearing hole 13d formed vertically from the upper surface to the lower surface. In contrast, the sliding bearing 14a of the load transmission mechanism portion 1D includes a bearing hole 14d that is obliquely inclined from the upper surface to the lower surface.

[0133] The sliding shaft portion 14 inserted into the sliding bearing 14a is drawn into or protruded from the housing portion 22 with an inclination with respect to the axial direction of the crank shaft portion 6. The angle formed by the sliding shaft portion 13 and the crankshaft portion 6 of the load transmission mechanism portion 1B according to the second embodiment is a right angle. However, since the angle formed by the central axis of the sliding shaft portion 14 and the central axis of the crankshaft portion 6 of the load transmission mechanism portion 1D is an obtuse angle greater than a right angle, the amount of deformation accompanying the rotation or horizontal movement of the crankshaft portion 6 of the connecting joint portion 12 connecting the sliding shaft portion 13 and the crankshaft portion 6 is smaller in the connecting joint portion 12 of the load transmission mechanism portion 1D. Therefore, by adopting the sliding bearing 14a instead of the sliding bearing 13a, the resistance such as friction accompanying the deformation of the connecting joint portion 12 of the load transmission mechanism portion 1D becomes smaller, so that the operation of the load transmission mechanism portion 1D can be performed more smoothly, and furthermore, the amount of deformation of the connecting joint portion 12 can be reduced, so that wear of the connecting joint portion 12 can be suppressed.

[0134] Note that the sliding bearing 14a of the load transmission mechanism portion 1D according to the fourth embodiment may be applied to the load transmission mechanism portion 1A according to the first embodiment. When applying the sliding bearing 14a to the load transmission mechanism portion 1A, the sliding bearing 14a is mounted on the load transmission mechanism portion 1A instead of the sliding bearing 13a. The sliding shaft portion 13 of the load transmission mechanism portion 1A corresponds to the sliding shaft portion 14 of the load transmission mechanism portion 1D, and the shape is the same as that of the sliding shaft portion 14. When the sliding shaft portion 13 of the load transmission mechanism portion 1A is pivotally supported by the sliding bearing 14a, the sliding shaft portion 13 operates in the same manner as the sliding shaft portion 14. Therefore, by mounting the sliding bearing 14a instead of the sliding bearing 13a, the resistance such as friction accompanying the deformation of the connecting joint portion 12 of the load transmission mechanism portion 1A becomes smaller, so that the operation of the load transmission mechanism portion 1A can be performed more smoothly, and furthermore, the amount of deformation of the connecting joint portion 12 can be reduced, so that wear of the connecting joint portion 12 can be suppressed.

[0135] Furthermore, the sliding bearing 14a of the load transmission mechanism portion 1D according to the fourth embodiment may be applied to the load transmission mechanism portion 1C according to the third embodiment. When applying the sliding bearing 14a to the load transmission mechanism portion 1C, the sliding bearing 14a is mounted on the load transmission mechanism portion 1C instead of the sliding bearing 13a. The sliding shaft portion 13 of the load transmission mechanism portion 1C corresponds to the sliding shaft portion 14 of the load transmission mechanism portion 1D, and the shape is the same as that of the sliding shaft portion 14. When the sliding shaft portion 13 of the load transmission mechanism portion 1C is pivotally supported by the sliding bearing 14a, the sliding shaft portion 13 operates in the same manner as the sliding shaft portion 14. Therefore, by mounting the sliding bearing 14a instead of the sliding bearing 13a, the resistance such as friction associated with the deformation of the connecting joint portion 12 of the load transmission mechanism portion 1C is reduced, so that the operation of the load transmission mechanism portion 1C can be performed more smoothly, and furthermore, the deformation amount of the connecting joint portion 12 can be reduced, so that wear of the connecting joint portion 12 can be suppressed.

[0136] <Load transmission mechanism portion 1E for training equipment according to the fifth embodiment> With reference to FIGS. 25 to 28, the configuration and operation of the load transmission mechanism portion 1E (hereinafter referred to as the load transmission mechanism portion 1E) for a training device according to the fifth embodiment will be described. FIG. 25 is a diagram for explaining the configuration of the load transmission mechanism portion 1E for a training device according to the fifth embodiment, FIG. 26 is a diagram for explaining the operation of the load transmission mechanism portion 1E for a training device according to the fifth embodiment, FIG. 27 is a diagram for explaining the operation of the sliding shaft portion 15 of the load transmission mechanism portion 1E for a training device according to the fifth embodiment, and FIG. 28 is a diagram for explaining the sliding bearing 15a of the load transmission mechanism portion 1E for a training device according to the fifth embodiment. FIG. 28(a) is a perspective view of the sliding bearing 15a. FIG. 28(b) is a cross-sectional view of the sliding bearing 15a cut along the cutting plane 15e shown in FIG. 28(a) as viewed from the direction of arrow A. The load transmission mechanism portion 1E is connected to and used with the first training device 100 and the second training device 201.

[0137] The configuration of the sliding bearing 15a of the load transmission mechanism part 1E is different from that of the sliding bearing 13a of the load transmission mechanism part 1B according to the second embodiment. Therefore, the operation of the sliding shaft part 15 of the load transmission mechanism part 1E is different from that of the sliding shaft part 13 of the load transmission mechanism part 1B. Hereinafter, in the description of the load transmission mechanism part 1E, for the configurations common to the load transmission mechanism part 1B according to the second embodiment, the same reference numerals as those used in the description of the load transmission mechanism part 1B in FIGS. 25 to 28 are attached and the description thereof is omitted, and only the configurations and operations different from those of the load transmission mechanism part 1B according to the second embodiment will be described in detail. Note that the sliding shaft part 15 of the load transmission mechanism part 1E corresponds to the sliding shaft part 13 of the load transmission mechanism part 1B, has the same shape as the sliding shaft part 13, and its operation is different from that of the sliding shaft part 13.

[0138] In the load transmission mechanism part 1E for a training device (hereinafter referred to as the load transmission mechanism part 1E), the sliding bearing 15a that pivotally supports the sliding shaft part 15 has a first bearing hole 15j that is inserted orthogonally to the axial direction of the crankshaft part 6, and a second bearing hole 15k that intersects the first bearing hole 15j and is inserted obliquely to the axial direction of the crankshaft part 6. The sliding shaft part 15 moves between the first bearing hole 15j and the second bearing hole 15k as the crankshaft part 6 moves in the axial direction.

[0139] The bearing hole 15d of the sliding bearing 15a includes the first bearing hole 15j and the second bearing hole 15k. As shown in FIG. 28(b), the first bearing hole 15j is formed by the upper cylindrical side surface part 15f and the lower cylindrical side surface part 15g, and the second bearing hole 15k is formed by the upper inclined conical side surface part 15h and the lower inclined conical side surface part 15i.

[0140] As shown in FIGS. 25 to 27, since the first bearing hole 15j and the second bearing hole 15k intersect, the sliding shaft part 15 can transition between the state supported by the first bearing hole 15j and the state supported by the second bearing hole 15k. FIGS. 25 and 27(a) show the state where the sliding shaft part 15 is supported by the first bearing hole 15j, and FIGS. 26 and 27(b) show the state where the sliding shaft part 15 is supported by the second bearing hole 15k.

[0141] The sliding shaft portion 15 is supported by the first bearing hole 15j in the vertical state and is supported by the second bearing hole 15k in the maximally inclined state. The sliding shaft portion 15 is supported by the constricted portion 15m in a state between the vertical state and the maximally inclined state. The constricted portion 15m is formed at the boundary between the upper cylindrical side surface portion 15f and the lower conical side surface portion 15i, and at the boundary between the upper conical side surface portion 15h and the lower cylindrical side surface portion 15g, as shown in Fig. 28(b).

[0142] In a state where no user force is input to the gripping portion 11 of the load transmission mechanism portion 1E, that is, in the initial state of the load transmission mechanism portion 1E, the portion of the sliding shaft portion 15 protruding outside the housing portion 22 is the longest. In this initial state, the gripping portion 11 is in the vertical state and is supported by the first bearing hole 15j. In the initial state of the load transmission mechanism portion 1E, the driving shaft portion 4 is located on the rightmost side on the paper surface of Fig. 25.

[0143] Then, when the user inputs a horizontal movement or rotation to the gripping portion 11, the sliding shaft portion 15 is gradually drawn into the housing portion 22 and the inclination angle increases. In this state, the driving shaft portion 4 transitions from being supported by the first bearing hole 15j to being supported by the constricted portion 15m.

[0144] Furthermore, when the user inputs a horizontal movement and rotation to the gripping portion 11, it reaches the maximally inclined state, and the support of the sliding shaft portion 15 by the constricted portion 15m transitions to support by the second bearing hole 15k.

[0145] The side plane 15l of the sliding bearing 15a is a flat surface. The side plane 15l is used for aligning the sliding bearing 15a. By bringing the side plane 15l into contact with the plane serving as the reference for positioning the sliding bearing 15a, the position and angle of the sliding bearing 15a are defined.

[0146] The load transmission mechanism section 1E can suppress the amount of bending of the connecting joint section 12 because the sliding shaft section 15 inclines by using the sliding bearing 15a. Accordingly, by adopting the sliding bearing 15a instead of the sliding bearing 13a, the resistance such as friction associated with the deformation of the connecting joint section 12 of the load transmission mechanism section 1E becomes smaller, so that the operation of the load transmission mechanism section 1E can be performed more smoothly, and further the amount of deformation of the connecting joint section 12 can be reduced, so that wear of the connecting joint section 12 can be suppressed.

[0147] Note that the sliding bearing 15a of the load transmission mechanism section 1E according to the fifth embodiment may be applied to the load transmission mechanism section 1A according to the first embodiment. When applying the sliding bearing 15a to the load transmission mechanism section 1A, the sliding bearing 15a is attached to the load transmission mechanism section 1A instead of the sliding bearing 13a. The sliding shaft section 13 of the load transmission mechanism section 1A corresponds to the sliding shaft section 15 of the load transmission mechanism section 1E, and the shape is the same as that of the sliding shaft section 15. When the sliding shaft section 13 of the load transmission mechanism section 1A is pivotally supported by the sliding bearing 15a, the sliding shaft section 13 operates in the same manner as the sliding shaft section 15. Accordingly, by attaching the sliding bearing 15a instead of the sliding bearing 13a, the resistance such as friction associated with the deformation of the connecting joint section 12 of the load transmission mechanism section 1A becomes smaller, so that the operation of the load transmission mechanism section 1A can be performed more smoothly, and further the amount of deformation of the connecting joint section 12 can be reduced, so that wear of the connecting joint section 12 can be suppressed.

[0148] Furthermore, the sliding bearing 15a of the load transmission mechanism section 1E according to the fifth embodiment may be applied to the load transmission mechanism section 1C according to the third embodiment. When applying the sliding bearing 15a to the load transmission mechanism section 1C, the sliding bearing 15a is attached to the load transmission mechanism section 1C instead of the sliding bearing 13a. The sliding shaft section 13 of the load transmission mechanism section 1C corresponds to the sliding shaft section 15 of the load transmission mechanism section 1E, and the shape is the same as that of the sliding shaft section 15. When the sliding shaft section 13 of the load transmission mechanism section 1C is pivotally supported by the sliding bearing 15a, the sliding shaft section 13 operates in the same manner as the sliding shaft section 15. Therefore, by mounting the sliding bearing 15a instead of the sliding bearing 13a, the resistance such as friction associated with the deformation of the connecting joint portion 12 of the load transmission mechanism portion 1C is reduced, so that the operation of the load transmission mechanism portion 1C can be performed more smoothly, and further the deformation amount of the connecting joint portion 12 can be reduced, so that wear of the connecting joint portion 12 can be suppressed.

[0149] <Explanation of the deformation example of the sliding bearing 15a of the load transmission mechanism portion 1E> Referring to FIG. 29, a deformation example of the sliding bearing 15a of the load transmission mechanism portion 1E will be described. It is a figure for demonstrating the 1st modification and the 2nd modification of the sliding bearing 15a of the load transmission mechanism part 1E which concerns on 5th Embodiment. Fig. 29(a) is a perspective view of the sliding bearing 16a which is the first modification, and Fig. 29(b) is a perspective view of the sliding bearing 17a which is the second modification.

[0150] As shown in Fig. 29(a), the sliding bearing 16a that pivotally supports the sliding shaft portion 15 according to the first modification has a bearing hole 16d in the shape of an inverted truncated cone. The sliding bearing 16a of the first modification is different in the shape of the bearing hole 15d compared with the above-described sliding bearing 15a. That is, it is different from the above-described sliding bearing 15a in that the shape of the bearing hole 16d of the sliding bearing 16a is in the shape of an inverted truncated cone.

[0151] The bearing hole 16d includes an oblique conical side surface portion 16e and a minimum diameter bearing hole portion 16f at the lower end portion. When the sliding shaft portion 15 is in a vertical state and an inclined state, the sliding shaft portion 15 is supported by the minimum diameter bearing hole portion 16f. And in the state where the sliding shaft portion 15 is inclined to the maximum extent, the sliding shaft portion 15 abuts against the oblique conical side surface portion 16e and is restricted by the oblique conical side surface portion 16e and the minimum diameter bearing hole portion 16f.

[0152] As shown in Fig. 29(b), the sliding bearing 17a that pivotally supports the sliding shaft portion 15 according to the second modification has a constricted portion 17g at the central portion in the axial direction. The sliding bearing 17a of the second modification example has a different shape of the bearing hole 15d compared with the above-described sliding bearing 15a. That is, the shape of the bearing hole 17d of the sliding bearing 17a is different from that of the above-described sliding bearing 15a in that it has an upper oblique conical side surface portion 17e and a lower oblique conical side surface portion 17f and has a shape similar to a drum.

[0153] The constricted portion 17g is formed at the boundary between the upper oblique conical side surface portion 17e and the lower oblique conical side surface portion 17f. When the sliding shaft portion 15 is in a vertical state and an inclined state, the sliding shaft portion 15 is supported by the constricted portion 17g. And in a state where the sliding shaft portion 15 is inclined to the maximum extent, the sliding shaft portion 15 abuts against the upper oblique conical side surface portion 17e or the lower oblique conical side surface portion 17f, and is supported by the constricted portion 17g and the upper oblique conical side surface portion 17e or the lower oblique conical side surface portion 17f.

[0154] The present disclosure is not limited to the load transmission mechanism parts 1A, 1B, 1C for the training instrument according to the above-described embodiments, and the first training instrument 100 and the second training instrument 201 using the same. As long as the gist of the present disclosure described in the claims is not deviated from, it can be implemented by various other modification examples or application examples.

[0155] (Supplementary Claim) The configuration of the load transmission mechanism part for the training instrument of this case can be summarized as follows. That is, A grip part held by a user or a footrest part operation part of the user is connected to an end portion, and a main drive shaft part that rotates together with the grip part or the footrest part, An intermediate shaft part that rotates in conjunction with the rotation of the main drive shaft part, A first rotation transmission part that is suspended between the main drive shaft part and the intermediate shaft part and transmits the mutual rotation between the main drive shaft part and the intermediate shaft part, A crank shaft part that is provided orthogonally to the intermediate shaft part and rotates about a central axis orthogonal to the central axis of the intermediate shaft part, A second rotation transmission part that is provided between the intermediate shaft part and the crank shaft part and transmits the mutual rotation between the intermediate shaft part and the crank shaft part, A fixing member to which the driving shaft portion, the intermediate shaft portion, and the crankshaft portion are fixed; A connecting joint portion including a plurality of universal joints connected thereto; One end receives tension by an external force, the other end is connected to the connecting joint portion, and the rotation and axial displacement of the crankshaft portion are converted into displacement in a direction orthogonal to the axial direction of the crankshaft portion through the connecting joint portion. A sliding shaft portion; Comprising; When the user rotates or horizontally moves the driving shaft portion through the gripping portion or the footrest portion, the external force applied to the sliding shaft portion is transmitted to the gripping portion or the footrest portion through the driving shaft portion A load transmission mechanism portion for a training device, characterized by this.

Explanation of symbols

[0156] 1A Load transmission mechanism portion for a training device according to the first embodiment 1B Load transmission mechanism portion for a training device according to the second embodiment 1Ba First modification of the load transmission mechanism portion for a training device according to the second embodiment 1Bb Second modification of the load transmission mechanism portion for a training device according to the second embodiment 1C Load transmission mechanism portion for a training device according to the third embodiment 1Ca Modification of the load transmission mechanism portion for a training device according to the third embodiment 1D Load transmission mechanism portion for a training device according to the fourth embodiment 1E Load transmission mechanism portion for a training device according to the fifth embodiment 1K First rotation transmission portion 1M Second rotation transmission portion 2 Outer housing 3 Inner housing 4 Driving shaft portion 4a Driving shaft bearing 4b Driving shaft bearing 4c Driving shaft sprocket 5 Intermediate shaft portion 5a Intermediate shaft bearing 5b Intermediate shaft bearing 5c Intermediate shaft sprocket 5d Intermediate shaft bevel gear 6 Crankshaft part 6a Crankshaft bearing 6b Crankshaft bearing 6c Crankshaft bevel gear 7 Connection part 8 Connection cylinder part 9 Crankshaft part 10 Transmission chain 11 Gripping part 11a Gripping rod 11b Frame part 12 Link joint part 12a First joint piece 12b First universal joint 12c Second joint piece 12d Second universal joint 12e Third joint piece 12f Pin 12g First central axis 12h Second central axis 12j Third central axis 12k Fourth central axis 13 Sliding shaft part 13a Sliding bearing 13b First end 13c Second end 13d Bearing hole 14 Sliding shaft part (Fourth embodiment) 14a Sliding bearing 14b First end 14c Second end 14d Bearing hole 15 Sliding shaft part (Fifth embodiment) 15a Sliding bearing 15b First end 15c Second end 15d Bearing hole 15e Cutting surface 15f Upper cylinder side surface 15g Lower cylinder side surface 15h Upper inclined cone side surface 15i Lower inclined cone side surface 15j First bearing hole 15k Second bearing hole 15l Side plane 15m Constriction part 16a Sliding bearing (first modified example) 16d Bearing hole 16e Oblique conical side surface part 16f Minimum diameter bearing hole part 17a Sliding bearing (second modified example) 17d Bearing hole 17e Upper oblique conical side surface part 17f Lower oblique conical side surface part 17g Constriction part 20 Straight path guiding part 20a First guide 20b Second guide 20c Slider 20d Guide support base 22 Housing part 23 Connecting and fixing part 23a First fixing piece 23b Second fixing piece 23c Driving shaft bearing 23d Intermediate shaft bearing 23e Crankshaft bearing 30 Connecting piece part 40 Universal joint 41 Connecting rod 41a First through hole 41b Second through hole 42 Ball joint 100 First training device 110 Seating part 111 Seat 112 Seat pillar 120 Framework 121 Thigh pressing part 130 Load applying part 131 Weight 132 Weight guiding pillar 133 Box part 140 Guiding pillar 170 Direction changing guiding wheel 180 Tensile member 201 Second training device 210 Seating part 211 Seat 212 Seat support 215 Backrest 220 Frame 221 Frame 222a Slide rail 222b Slide rail 225 Upper housing 230 Load application part 231 Shock absorber 232 Weight guide support 240 Guide support 241 Shock absorber 250 Lifting and rocking member 251 Shaft 2252 Box-shaped cover 253 Frame body 254 Guide part 257 Sliding shaft 260 Gripping part 262 Palm support part 263 Frame body 264 Rotating shaft 270 Sliding part 271 Footrest part 272 Bearing 273 Third rotating shaft 274a Side plate 274b Side plate 275 Connection plate 276 Driving shaft part 277 Upper part of the body 278 Lower part of the body 279 Connection part 280 Tensile member 280a First tensile member 280b Connection part 280c Second tensile member 280d Connection member 285a Pulley 285b Pulley 285c Movable pulley 285d Pulley 285e Pulley 285f Pulley 285g Pulley 285h Pulley 290 Load transmission part 291 Rotational transmission part 291a sprocket 291b sprocket 291c chain 291d bevel gear 291e bevel gear 292 crank mechanism part 292a crankshaft 292b connecting piece

Claims

1. An input unit for the user to input force is connected to an end, a driving shaft portion that rotates together with the input unit, an intermediate shaft portion that rotates in conjunction with the rotation of the driving shaft portion, a first rotation transmission portion that is suspended between the driving shaft portion and the intermediate shaft portion and transmits the mutual rotation between the driving shaft portion and the intermediate shaft portion, a second rotation transmission portion that is provided between the intermediate shaft portion and a crank shaft portion orthogonal to the intermediate shaft portion and transmits the mutual rotation between the intermediate shaft portion and the crank shaft portion, an inner housing that houses the driving shaft portion, the intermediate shaft portion, and the crank shaft portion, an outer housing that houses the inner housing and in which the inner housing moves internally in the axial direction of the crank shaft portion, a sliding shaft portion that is disposed on the outer housing and is allowed to be displaced in a direction orthogonal to the axial direction of the crank shaft portion and is urged in a linear direction by an external force, a rotation having a central axis orthogonal to the axial direction of the sliding shaft portion and a rotation in a direction orthogonal to the central axis are allowed by a combination of a plurality of connecting piece portions, and a connecting joint portion to which one of the plurality of connecting piece portions is connected to the sliding shaft portion, comprising In the connecting joint portion, in a connecting piece portion different from the one connecting piece portion connected to the sliding shaft portion, a rotation having a central axis orthogonal to the axial direction of the crank shaft portion is allowed and is connected to the crank shaft portion, and the rotation and axial movement of the crank shaft portion are converted into vertical displacement of the sliding shaft portion, When the user horizontally moves the driving shaft portion through the input unit, the external force applied to the sliding shaft portion is transmitted to the input unit through the driving shaft portion A load transmission mechanism unit for a training device, characterized in that.

2. An input unit for the user to input force is connected to an end, a driving shaft portion that rotates together with the input unit, an intermediate shaft portion that rotates in conjunction with the rotation of the driving shaft portion, a first rotation transmission portion that is suspended between the driving shaft portion and the intermediate shaft portion and transmits the mutual rotation between the driving shaft portion and the intermediate shaft portion, a second rotation transmission portion that is provided between the intermediate shaft portion and a crank shaft portion orthogonal to the intermediate shaft portion and transmits the mutual rotation between the intermediate shaft portion and the crank shaft portion, a connecting and fixing portion that connects the driving shaft portion, the intermediate shaft portion, and the crank shaft portion and transmits the mutual horizontal movement between the driving shaft portion, the intermediate shaft portion, and the crank shaft portion, a sliding shaft portion that is allowed to be displaced in a direction orthogonal to the axial direction of the crank shaft portion and is urged in a linear direction by an external force, Rotation having a central axis orthogonal to the axial direction of the sliding shaft portion and rotation in a direction orthogonal to the central axis are permitted by a combination of a plurality of connecting piece portions, and a connecting joint portion to which one of the plurality of connecting piece portions is connected to the sliding shaft portion, comprising: In the connecting joint portion, rotation having a central axis orthogonal to the axial direction of the crank shaft portion is permitted in a connecting piece portion different from the one connecting piece portion connected to the sliding shaft portion, and it is connected to the crank shaft portion, and the rotation and axial movement of the crank shaft portion are converted into vertical displacement of the sliding shaft portion, When the user horizontally moves the driving shaft portion through the input portion, the external force applied to the sliding shaft portion is transmitted to the input portion through the driving shaft portion A load transmission mechanism portion for a training device, characterized in that. **Claim 3** The load transmission mechanism portion for a training device according to claim 1 or 2, wherein the input portion is a gripping portion gripped by the user or a footrest portion of the user. **Claim 4** The load transmission mechanism portion for a training device according to claim 1 or 2, wherein the connecting joint portion is configured with a plurality of connected universal joints as main members. **Claim 5** A connection portion for connecting to a training device is provided in the outer housing, The load transmission mechanism portion for a training device according to claim 1, characterized in that the inner housing slides inside the outer housing as the driving shaft portion horizontally moves. **Claim 6** The load transmission mechanism portion for a training device according to claim 2, characterized in that a connection portion for connecting to a training device is provided. **Claim 7** The first rotation transmission portion is a transmission chain, A driving shaft sprocket is provided on the driving shaft portion, An intermediate shaft sprocket is provided on the intermediate shaft portion, The load transmission mechanism portion for a training device according to claim 1 or 2, characterized in that the transmission chain is suspended between the driving shaft sprocket and the intermediate shaft sprocket. **Claim 8** The second rotation transmission portion is An intermediate shaft bevel gear provided on the intermediate shaft portion, The load transmission mechanism portion for a training device according to claim 1 or 2, characterized by comprising a crank shaft bevel gear provided on the crank shaft portion and meshing with the intermediate shaft bevel gear. **Claim 9** The load transmission mechanism portion for a training device according to claim 3, characterized in that the gripping portion is an annular body. **Claim 10** The external force according to claim 1 or 2, characterized in that it is generated by a load applying unit that freely adjusts the magnitude of the load of the training device.

11. The sliding bearing that pivotally supports the sliding shaft portion has a bearing hole that obliquely inserts the sliding shaft portion with respect to the axial direction of the crank shaft portion. The load transmission mechanism portion for a training device according to claim 1 or 2.

12. The sliding bearing that pivotally supports the sliding shaft portion has a first bearing hole that intersects the axial direction of the crank shaft portion and is inserted orthogonally, and a second bearing hole that intersects the first bearing hole and is inserted obliquely with respect to the axial direction of the crank shaft portion. The sliding shaft portion moves between the first bearing hole and the second bearing hole as the sliding shaft portion moves in the axial direction of the crank shaft portion. The load transmission mechanism portion for a training device according to claim 1 or 2.

13. The sliding bearing that pivotally supports the sliding shaft portion has a bearing hole in the shape of an inverted truncated cone. The load transmission mechanism portion for a training device according to claim 1 or 2.

14. The sliding bearing that pivotally supports the sliding shaft portion has a constricted portion at the central portion in the axial direction. The load transmission mechanism portion for a training device according to claim 1 or 2.

15. A training device, characterized in that it includes the load transmission mechanism portion for a training device according to claim 1 or 2.

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