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

Abstract

To provide a load transmission mechanism part for training equipment and training equipment allowing users to simultaneously perform multiple movements of an object part of muscle strength training in the muscle strength training performed by applying a load to muscles.SOLUTION: A load transmission mechanism part for training equipment includes: a main drive shaft that rotates together with an input part to which a user inputs force; a first rotational transmission part used to transmit rotational movement between the main drive shaft and an intermediate shaft; a second rotation transmission part used to transmit rotational movement between the intermediate shaft and an orthogonal shaft orthogonal to the intermediate shaft; a sliding shaft receiving tension from the outside and reciprocating; a connecting part for connecting the main drive shaft, the intermediate shaft and the orthogonal shaft; a slider part to be attached to the connecting part; a guide part for guiding a moving direction of the connecting part via the slider part; and a link mechanism part whose one end side is connected to the orthogonal shaft, whose other end side is connected to the sliding shaft and that converts the rotational movement and linear movement of the orthogonal shaft into the reciprocation of the sliding shaft.SELECTED DRAWING: Figure 1

Description

Technical Field

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

Background Art

[0002] Muscle strength training is effective not only in improving the physical ability of sports players but also in preventing muscle atrophy in the elderly. Therefore, it is recommended that not only sports players but also the elderly perform muscle strength training to live a healthy life. As muscle strength training, a method of performing an operation using a specific muscle strength to be strengthened while applying an external load is widely used. There are various training devices used for such muscle strength training. For example, Patent Document 1 discloses a lower limb extension muscle strength strengthening device.

[0003] The training device disclosed in Patent Document 1 is said to be able to strengthen the muscle strength of the lower limbs. Muscle strength training using the training device disclosed in Patent Document 1 is performed with the user's feet fixed to the bed body and the user's buttocks placed on a moving cart placed on the bed body with the bed body inclined. In this state, the user's body weight can be used as a load on the user's legs, and the user can strengthen the muscle strength around the knees by bending and extending the knees on the inclined bed body to perform flexion and extension movements of the legs.

[0004] Muscle strength training is said to be able to acquire muscles with flexibility and elasticity by moving the muscles through complex body movements. The operation performed in muscle strength training using the training device disclosed in Patent Document 1 is a monotonous operation in one direction, and there is a risk that the trained muscles will become hardened and lack flexibility and elasticity. Therefore, in muscle strength training performed by applying a load to muscles, there has been a demand for the appearance of a training device that can simultaneously perform complex movements of the muscles to be trained.

Prior Art Documents

Patent Documents

[0005] Patent Document 1 Japanese Patent Application Laid-Open No. 2013-215547 Summary of the Invention Problems to be Solved by the Invention

[0006] Therefore, an object of the present invention is to provide a load transmission mechanism unit for a training device that can simultaneously perform a complex operation of a target site of muscle strength training in muscle strength training in which a load is applied to muscles, and a training device using the same. Means for Solving the Problems

[0007] That is, the load transmission mechanism unit for a training device according to the first aspect is connected to an input unit to which a user inputs force, a driving shaft unit that rotates together with the input unit, an intermediate shaft unit that rotates in conjunction with the rotation of the driving shaft unit, a first rotation transmission unit that interlocks between the driving shaft unit and the intermediate shaft unit and is used for transmitting rotation between the driving shaft unit and the intermediate shaft unit, an intermediate shaft unit, a second rotation transmission unit that interlocks between the intermediate shaft unit and an orthogonal shaft unit orthogonal to the intermediate shaft unit and is used for transmitting rotation between the intermediate shaft unit and the orthogonal shaft unit, a sliding shaft unit that receives tension from the outside and reciprocates, a connecting unit that connects the driving shaft unit, the intermediate shaft unit, and the orthogonal shaft unit, a slider unit attached to the connecting unit, a guide unit that guides the moving direction of the connecting unit via the slider unit, and a link mechanism unit having one end connected to the orthogonal shaft unit and the other end connected to the sliding shaft unit, which converts the rotation and straight-ahead movement of the orthogonal shaft unit into the reciprocating movement of the sliding shaft unit.

[0008] A training device according to the second aspect is characterized by including the load transmission mechanism unit for a training device according to the first aspect. Effects of the Invention

[0009] The load transmission mechanism part for a training device according to the present invention is connected to an input part where a user inputs force, and includes 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 interlocks between the driving shaft part and the intermediate shaft part and is used for transmitting rotation between the driving shaft part and the intermediate shaft part, an intermediate shaft part, a second rotation transmission part that interlocks between the intermediate shaft part and an orthogonal shaft part orthogonal to the intermediate shaft part and is used for transmitting rotation between the intermediate shaft part and the orthogonal shaft part, a sliding shaft part that receives tension from the outside and reciprocates, a connecting part that connects the driving shaft part, the intermediate shaft part, and the orthogonal shaft part, a slider part attached to the connecting part, a guiding part that guides the moving direction of the connecting part via the slider part, and a link mechanism part where one end side is connected to the orthogonal shaft part and the other end side is connected to the sliding shaft part, and that converts the rotation and linear movement of the orthogonal shaft part into the reciprocating movement of the sliding shaft part. Since it is characterized by including these components, in muscle strength training that applies a load to muscles, it is possible to simultaneously perform composite movements of the target part of the muscle strength training.

Brief Description of the Drawings

[0010]

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[0011] <Regarding the load transmission mechanism portion 1A for the training device according to the first embodiment> With reference to FIGS. 1 to 4, the load transmission mechanism portion 1A for the training device according to the first embodiment of the present disclosure (hereinafter referred to as the load transmission mechanism portion 1A) will be described. FIG. 1 is a front view for explaining the configuration of the load transmission mechanism unit 1A, FIG. 2 is a perspective view for explaining the configuration of the load transmission mechanism unit 1A, FIG. 3 is a view for explaining the link mechanism unit 30 of the load transmission mechanism unit 1A, and FIG. 4 is a perspective view for explaining the internal configuration of the load transmission mechanism unit 1A. The load transmission mechanism unit 1A is attached to a training device 100 described later and receives an input from the user's foot.

[0012] The load transmission mechanism unit 1A includes a housing unit 22. In FIGS. 1 and 2, the housing unit 22 and the lower housing unit 22b are drawn as imaginary lines in order to make the internal configuration of the load transmission mechanism unit 1A easily visible. The housing unit 22 incorporates a drive shaft portion 4, an intermediate shaft portion 5, an orthogonal shaft portion 6, and a sliding shaft portion 13. The drive shaft portion 4, the intermediate shaft portion 5, the orthogonal shaft portion 6, and the sliding shaft portion 13 are rod-shaped rotating shafts. The drive shaft portion 4 and the orthogonal shaft portion 6 can transmit rotation in both directions via the intermediate shaft portion 5.

[0013] The drive shaft portion 4 is connected to an input portion to which the user inputs force and rotates together with the input portion. The input portion is a footrest portion 11 on which the user places the foot. The footrest portion 11 is connected to the tip portion 4d of the drive shaft portion 4. When the user uses the training device 100 described later in which the load transmission mechanism unit 1A is mounted, for example, when performing right leg muscle strength training, with the right foot placed on the footrest portion 11, the user bends and extends the right leg, rotates the right foot in the forward and reverse directions, or moves the right foot in the left - right horizontal direction as viewed by the user. Since a load is applied to these movements of the user, the user can simultaneously move a wide range of muscles in the right leg by combining these movements in a complex manner, suppressing muscle stiffness and obtaining flexible and elastic muscle strength. Also, the user can perform left leg muscle strength training in the same manner as the right leg muscle strength training by using the training device 100 described later.

[0014] The drive shaft portion 4 has a footrest portion 11 connected to its tip end portion 4d, rotates together with the footrest portion 11, and moves straight in the lateral direction in the short side direction of the housing portion 22, that is, in the left - right horizontal direction (vertical direction with respect to the surface of FIG. 1) as viewed from the user. The first rotation transmission portion 1K interlocks (cooperates) between the drive shaft portion 4 and the intermediate shaft portion 5 and is used for transmitting rotation between the drive shaft portion 4 and the intermediate shaft portion 5. The intermediate shaft portion 5 rotates in conjunction with the rotation of the drive shaft portion 4. Also, since the drive shaft portion 4, the intermediate shaft portion 5, and the orthogonal shaft portion 6 are each connected to the connecting portion 23 via bearings, the drive shaft portion 4, the intermediate shaft portion 5, and the orthogonal shaft portion 6 move straight integrally inside the housing portion 22.

[0015] The housing portion 22 constitutes the outer wall of the load transmission mechanism portion 1A. The orthogonal shaft portion 6 is orthogonal to the intermediate shaft portion 5. The second rotation transmission portion 1M interlocks (cooperates) between the intermediate shaft portion 5 and the orthogonal shaft portion 6 and is used for transmitting rotation between the intermediate shaft portion 5 and the orthogonal shaft portion 6. The sliding shaft portion 13 receives the tension 19 from the outside and reciprocates.

[0016] The sliding shaft portion 13 is supported by a sliding bearing 13a attached to the side surface 22a of the housing portion 22 so as to be able to move straight in the axial direction of the sliding shaft portion 13. A tension member 25 is connected to the first end portion 13b of the sliding shaft portion 13, and the external tension 19 is applied to the sliding shaft portion 13. The tension 19 is generated by a load applying portion 130 (see FIG. 6) described later that freely adjusts the magnitude of the load of the training device 100. The sliding shaft portion 13 moves straight in the axial direction of the sliding shaft portion 13 in a state where the tension 19 is applied.

[0017] The connecting portion 23 connects the drive shaft portion 4, the intermediate shaft portion 5, and the orthogonal shaft portion 6. The connecting 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 linear plate - like bodies, are connected so as to be orthogonal to each other, and the connecting portion 23 has an L - shape (see FIG. 1). The drive bearing 4a and the intermediate bearing 5a are attached to the first fixing piece 23a. The orthogonal bearing 6a is attached to the second fixing piece 23b. The drive shaft portion 4 is supported by the drive bearing 4a, the intermediate shaft portion 5 is supported by the intermediate bearing 5a, and the orthogonal shaft portion 6 is supported by the orthogonal bearing 6a so as to be capable of rotating in both the normal and reverse directions. The drive shaft portion 4 and the intermediate shaft portion 5 are arranged to be parallel. The orthogonal shaft portion 6 is arranged to be orthogonal to the drive shaft portion 4 and the intermediate shaft portion 5.

[0018] One end of the link mechanism portion 30 is connected to the orthogonal shaft portion 6, and the other end is connected to the sliding shaft portion 13, and converts the rotation and linear movement of the orthogonal shaft portion 6 into the linear movement of the sliding shaft portion 13. The first rotation transmission portion 1K is the transmission chain 10. The drive shaft portion 4 is provided with a drive shaft sprocket 4c, and the intermediate shaft portion 5 is provided with an intermediate shaft sprocket 5c. A sprocket is a gear for transmitting the rotation of a shaft to the transmission chain 10 or transmitting the rotation of the transmission chain 10 to a shaft. The transmission chain 10 is one of the mechanical elements used for power transmission that transmits the rotation of a shaft as tension. Since the transmission chain 10 serving as the first rotation transmission portion 1K is suspended and interlocked between the drive shaft sprocket 4c and the intermediate shaft sprocket 5c, the transmission chain 10 rotates the drive shaft sprocket 4c and the intermediate shaft sprocket 5c in conjunction, so that the intermediate shaft portion 5 rotates in conjunction with the rotation of the drive shaft portion 4.

[0019] The second rotation transmission portion 1M includes an intermediate shaft bevel gear 5d and an orthogonal shaft bevel gear 6c. The intermediate shaft bevel gear 5d is provided on the intermediate shaft portion 5. The orthogonal shaft bevel gear 6c is provided on the orthogonal shaft portion 6 and meshes with the intermediate shaft bevel gear 5d. The intermediate shaft bevel gear 5d and the orthogonal shaft bevel gear 6c transmit each other's rotation by meshing their teeth with the teeth of the other.

[0020] A bevel gear is a gear that is attached to each of two intersecting rotating shafts, transmits rotational motion between these two shafts, and the toothed surface of the gear itself is in the shape of a conical frustum. The intermediate shaft bevel gear 5d and the orthogonal shaft bevel gear 6c constitute the second rotational transmission part 1M, and are used to transmit rotation between the intermediate shaft part 5 and the orthogonal shaft part 6 that is orthogonal to the intermediate shaft part 5 by interlocking the intermediate shaft part 5 and the orthogonal shaft part 6.

[0021] The slider part 20c is attached to the connecting part 23. The guide part 20 guides the moving direction of the connecting part 23 via the slider part 20c. The guide part 20 guides the slider part 20c in a direction orthogonal to the axial direction of the orthogonal shaft part 6 and the axial direction of the intermediate shaft part 5 (the vertical direction with respect to the surface of FIG. 1). The guide part 20 includes a first guide 20a, a second guide 20b, a slider part 20c, and a guide support base 20d that serve as rails (railroads). The guide part 20 is one of the mechanical element parts in which the slider part 20c that slides along the first guide 20a and the second guide 20b moves straight forward with low friction smoothly. The slider part 20c has the connecting part 23 attached thereto, and moves the connecting part 23 along a direction orthogonal to the extending direction of the first rotational transmission part 1K.

[0022] The guide support base 20d is fixed inside the housing part 22. The first guide 20a and the second guide 20b are linear rod-shaped bodies, and are fixed to the guide support base 20d while maintaining a parallel state between the first guide 20a and the second guide 20b. The slider part 20c is installed straddling the first guide 20a and the second guide 20b, and moves straight forward on the first guide 20a and the second guide 20b. The first guide 20a and the second guide 20b are installed inside the housing part 22 so as to extend in the left-right horizontal direction as viewed by the user. Specifically, the first guide 20a and the second guide 20b are arranged inside the housing part 22 so as to extend in a direction orthogonal to the axial direction of the orthogonal shaft part 6 and the axial direction of the intermediate shaft part 5.

[0023] When the footrest part 11, which is the input part, is moved horizontally by the user, the connecting part 23 moves smoothly and linearly with low friction along the extending direction of the first guide 20a and the second guide 20b together with the slider part 20c. The driving shaft part 4, the intermediate shaft part 5, and the orthogonal shaft part 6 move linearly in the horizontal direction along with the linear movement of the connecting part 23 in the horizontal direction. Note that the parallelism in two directions means three-dimensional parallelism, that is, the two directions are on the same plane and do not intersect.

[0024] A through long hole 34 is provided on the side surface 22a of the housing part 22. The long hole 34 is formed to extend in the direction in which the slider part 20c moves linearly. The driving shaft part 4 is inserted through the long hole 34. Along with the linear movement of the footrest part 11 by the user, the driving shaft part 4 moves linearly in the long hole 34.

[0025] One end side of the link mechanism part 30 is connected to the orthogonal shaft part 6, and the other end side is connected to the sliding shaft part 13, and converts the rotation and linear movement of the orthogonal shaft part 6 into the linear movement of the sliding shaft part 13. The configuration of the link mechanism part 30 will be described with reference to FIG. 3. The link mechanism part 30 includes a first link 30a and a second link 30b. A link generally has an elongated rod shape with joints provided at both ends and serves to transmit force and motion. One end of the first link 30a is fixed to the orthogonal shaft part 6, and the other end of the first link 30a is connected to one end of the second link 30b to form a first joint 30c. The first joint 30c is a joint formed by the first link 30a and the second link 30b and is a movable part. The second link 30b can rotate approximately 360 degrees with respect to the first link 30a around the first joint 30c.

[0026] The other end of the second link 30b is connected to the second end part 13c of the sliding shaft part 13 to form a second joint 30d. The second joint 30d is a joint formed by the second link 30b and the sliding shaft part 13 and is a movable part. The second link 30b can rotate approximately 360 degrees with respect to the sliding shaft part 13 around the second joint 30d.

[0027] The tension member 25 is connected to the first end portion 13b of the sliding shaft portion 13 and transmits the tension 19 generated by a load applying portion 130 described later. The tension member 25 is a rope having flexibility, with little stretchability, and its material and thickness are determined according to load conditions and durability requirements. Mainly metal is used as the material of the tension member 25. Also, the tension member 25 may be a metal chain. One end side of the tension member 25 is connected to a lifting and swinging portion 150 described later, and the other end side is connected to a load transmission mechanism portion 1A. The load by the load applying portion 130 is applied to the lifting and swinging portion 150 and the load transmission mechanism portion 1A via the tension member 25.

[0028] The user places either the left or right foot on the footrest portion 11. The footrest portion 11 has an area that is slightly larger than the size of the user's foot. The footrest portion 11 includes a third rotating shaft 173, side plates 174a and 174b, and a connecting plate 175 (see FIG. 1).

[0029] The connecting plate 175 has a main drive shaft portion 4 connected to its central portion substantially vertically. At both ends of the connecting plate 175, flat side plates 174a and 174b that are perpendicular to the connecting plate 175 are provided. Between the side plates 174a and 174b, a third rotating shaft 173 to which the footrest portion 11 is attached is rotatably installed.

[0030] The third rotating shaft 173 is rotatably supported by a bearing 172 provided on the back surface of the footrest portion 11. Thereby, the footrest portion 11 can rotate around the third rotating shaft 173. Further, the footrest portion 11 can rotate around the main drive shaft portion 4.

[0031] That is, the footrest 11 can rotate around two different axes that are orthogonal to each other. Therefore, the user has a wider range 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 11 stress - free and press the footrest 11 with the sole of the foot. Thus, the user can, in the posture (angle and force) they desire, apply a load to the flexion and extension movement of the foot placed on the footrest 11 by the training device 100, and by changing the direction of the toe of the foot from upward to lateral during the flexion and extension movement, a load can be applied to the twisting movement of the entire foot.

[0032] The load - transmitting mechanism part 1A is provided with connection parts 7a and 7b for connecting to the training device 100. The load - transmitting mechanism part 1A is provided with a lower housing part 22b at the lower part of the housing part 22. The lower housing part 22b is connected and fixed to the lower part of the housing part 22. The connection parts 7a and 7b are cylindrical, each having a connection cylinder part 8a and 8b, and are provided on the lower housing part 22b. The training device 100 is provided with slide rails 122a and 122b that serve as rails for the linear movement of the load - transmitting mechanism part 1A. The slide rail 122a and the slide rail 122b are provided to be parallel. The slide rail 122a is inserted through the connection cylinder part 8a, and the slide rail 122b is inserted through the connection cylinder part 8b, whereby the load - transmitting mechanism part 1A is connected to the training device 100. Note that the configuration in which the load transmission mechanism unit 1A moves straight along the slide rails 122a and 122b is not limited to the configuration in which the above-described slide rails 122a and 122b are inserted into and connected to the connection cylinder portions 8a and 8b, and other configurations may be used. For example, the load transmission mechanism unit 1A may be guided to move straight using rollers (not shown) that roll on the slide rails 122a and 122b. Specifically, a linear roller way (registered trademark) of Nippon Thomson Co., Ltd., an LM guide (registered trademark) of THK Co., Ltd., or a linear guide (registered trademark) of NSK Ltd. may be used. For example, the linear roller way of Nippon Thomson Co., Ltd. includes a slide unit and a track rail, and the slide unit provided in the lower housing portion 22b moves linearly along the slide rails 122a and 122b corresponding to the track rail.

[0033] <Explanation of the operation of the load transmission mechanism unit 1A according to the first embodiment> The user can perform leg movements with a high degree of freedom using the load transmission mechanism unit 1A mounted on the training device 100. The rotation of the footrest portion 11 induces a straight movement in the lateral direction (arrow 4e in FIG. 2) of the footrest portion 11. The clockwise rotation of the footrest portion 11 as viewed from the user induces a straight movement in the right lateral direction of the footrest portion 11 as viewed from the user. On the other hand, the counterclockwise rotation of the footrest portion 11 as viewed from the user induces a straight movement in the left lateral direction of the footrest portion 11 as viewed from the user. Therefore, when the user's foot placed on the footrest portion 11 is rotated, a straight movement in the left-right direction (arrow 4e in FIG. 2) occurs simultaneously, so that the user's leg can perform a leg movement involving a composite-direction movement. This is because the rotation of the footrest portion 11 becomes the rotation of the main drive shaft portion 4, and the rotation of the main drive shaft portion 4 is transmitted as the rotation of the orthogonal shaft portion 6 via the first rotation transmission portion 1K and the second rotation transmission portion 1M. However, the force attempting to rotate the orthogonal shaft portion 6 is pushed back by the tension 19 of the tension member 25 transmitted via the link mechanism portion 30, inducing a straight movement in the lateral direction (arrow 4e in FIG. 2) of the slider portion 20c. Specifically, when viewed from the user, the clockwise rotation of the footrest portion 11 induces the straight movement of the slider portion 20c in the right lateral direction as viewed from the user, and the counterclockwise rotation of the footrest portion 11 induces the straight movement of the slider portion 20c in the left lateral direction as viewed from the user.

[0034] In addition, the straight movement of the footrest portion 11 in the lateral direction (arrow 4e in FIG. 2) induces the rotation of the footrest portion 11. The straight movement of the footrest portion 11 in the right lateral direction as viewed from the user induces the clockwise rotation of the footrest portion 11 as viewed from the user. On the other hand, the straight movement of the footrest portion 11 in the left lateral direction as viewed from the user induces the counterclockwise rotation of the footrest portion 11 as viewed from the user. This is because, under the situation where the orthogonal shaft portion 6 receives the tension 19 of the tension member 25 via the link mechanism portion 30, the straight movement of the footrest portion 11 in the lateral direction (arrow 4e in FIG. 2) becomes the straight movement of the connecting portion 23 in the lateral direction, the straight movement of the connecting portion 23 in the lateral direction induces the rotation of the intermediate shaft portion 5, and the rotation of the intermediate shaft portion 5 is transmitted as the rotation of the main drive shaft portion 4 via the first rotation transmission portion 1K. Specifically, the straight movement of the slider portion 20c in the right lateral direction as viewed from the user induces the clockwise rotation of the footrest portion 11 as viewed from the user, and the straight movement of the slider portion 20c in the left lateral direction as viewed from the user induces the counterclockwise rotation of the footrest portion 11 as viewed from the user.

[0035] Furthermore, when the user attempts to make a straight movement of the footrest portion 11 in the lateral direction (arrow 4e in FIG. 2) while resisting the induced rotation of the footrest portion 11 and maintaining the direction of the footrest portion 11 constant, a load due to the tension 19 of the tension member 25 is applied to the straight movement.

[0036] For this reason, since the user's leg makes a straight movement in the same direction as the rotation as the footrest portion 11 rotates, the user's leg experiences both rotation and straight movement in the lateral direction (arrow 4e in FIG. 2) at the same time, and thus a composite movement involving the movement of the leg in a plurality of directions can be performed simultaneously. In addition, when the user resists the force that tries to rotate the footrest portion 11 and keeps the direction of the foot constant while moving the footrest portion 11 straight in the lateral direction (arrow 4e in FIG. 2), a load is applied to the straight movement. Therefore, the user can perform a movement with loads applied in a plurality of directions simultaneously, and can perform a movement involving a complex motion using a wide range of leg muscles. Furthermore, when the user adds a flexion and extension movement of the leg placed on the footrest portion 11, the user's leg can simultaneously perform three-directional movements of a rotational movement, a lateral movement (arrow 4e in FIG. 2), and a flexion and extension movement. Therefore, a three-directional complex movement using a wider range of leg muscles can be performed.

[0037] <Regarding the load transmission mechanism unit 1B for the training device according to the second embodiment> Referring to FIG. 5, the load transmission mechanism unit 1B for the training device according to the second embodiment (hereinafter referred to as the load transmission mechanism unit 1B) will be described. FIG. 5 is a front view for explaining the configuration of the load transmission mechanism unit 1B. In FIG. 5, the housing portion 22 is drawn by an imaginary line. The load transmission mechanism unit 1B is a modified example of the load transmission mechanism unit 1A, and can be attached to a training device 100 described later and used as a lifting and swinging portion 150, and receives an input from the user's hand.

[0038] The above-described load transmission mechanism unit 1A is mainly a mechanical member for the user to place the foot on the footrest portion 11 and use it for lower limb training. On the other hand, the load transmission mechanism unit 1B is proposed for upper limb muscle strength training. The load transmission mechanism unit 1B is provided with a gripping portion 160, and the user grips the gripping portion 160 with the hand to perform upper limb muscle strength training. The input portion of the load transmission mechanism unit 1B is the gripping portion 160 that the user grips. The training device 100 described later can be used for upper and lower limb muscle strength training by mounting the load transmission mechanism unit 1A having the footrest portion 11 and the load transmission mechanism unit 1B having the gripping portion 160.

[0039] The load transmission mechanism part 1B has a gripping part 160, which serves as an input part for the user's force, connected to the tip part 151c of the driving shaft part 151. The load transmission mechanism part 1B is different from the load transmission mechanism part 1A in the configuration of the driving shaft part 151 as compared with the driving shaft part 4 (see FIG. 1) of the load transmission mechanism part 1A. The driving shaft part 151 projects the tip part 151c on a side different from the sliding shaft part 13, and is different from the load transmission mechanism part 1A in that the gripping part 160 is connected to the tip part 151c. Hereinafter, in the description of the load transmission mechanism part 1B, the components common to the load transmission mechanism part 1A are denoted by the same reference numerals as those used in the description of the load transmission mechanism part 1A in FIG. 5, and the description thereof is omitted, and only the components different from the load transmission mechanism part 1A are described.

[0040] The load transmission mechanism part 1B is used in a state where it is rotated 90 degrees from the state shown in FIG. 1 of the load transmission mechanism part 1A so that the axial direction of the driving shaft part 151 is substantially vertical. In order to connect the load transmission mechanism part 1B to the training device 100, a connection part 7 is provided in the housing part 22. A cylindrical connection cylinder part 8 is formed in the connection part 7, and a guide support column 140 is inserted through the connection cylinder part 8. For example, a member with low sliding resistance such as fluororesin is used for the connection cylinder part 8. The load transmission mechanism part 1B is connected to the guide support column 140 by inserting the guide support column 140 through the connection part 7, and moves in the vertical direction and pivots around the guide support column 140. The vertical movement of the load transmission mechanism part 1B and the pivoting around the guide support column 140 are applied with the load of the tension 19 of the tension member 25.

[0041] <Regarding the operation of the load transmission mechanism part 1B for the training device according to the second embodiment> The rotation of the gripping portion 160 attached to the tip portion 151c of the main drive shaft portion 151 is transmitted as a force that attempts to rotate the orthogonal shaft portion 6 via the first rotation transmission portion 1K and the second rotation transmission portion 1M. Since a resistance force due to the tension 19 of the tension member 25 acts on the rotation of the orthogonal shaft portion 6 via the link mechanism portion 30, a force that causes the intermediate shaft portion 5 to linearly move in the same direction as the rotation of the gripping portion 160 acts on the intermediate shaft portion 5 as a reaction force to the force attempting to rotate. The force that causes the linear movement acting on the intermediate shaft portion 5 is transmitted to the main drive shaft portion 151 via the connecting portion 23, and by extension, to the gripping portion 160, and the gripping portion 160 linearly moves.

[0042] <Regarding the load transmission mechanism portion 1C for a training device according to the third embodiment> With reference to FIGS. 12 to 18, the load transmission mechanism portion 1C for a training device according to the third embodiment of the present disclosure (hereinafter referred to as the load transmission mechanism portion 1C) will be described. FIG. 12 is a front view for explaining the configuration of the load transmission mechanism portion 1C, FIG. 13 is a perspective view for explaining the configuration of the load transmission mechanism portion 1C, FIG. 14 is a diagram for explaining the operation of the link mechanism portion 37 of the load transmission mechanism portion 1C, FIG. 15 is a diagram for explaining the operation of the sliding shaft portion 13 of the load transmission mechanism portion 1C, FIG. 16 is a diagram for explaining the configuration of the sliding bearing 50 of the load transmission mechanism portion 1C, FIG. 17 is a diagram for explaining the configuration of the first small piece portion 39 and the third small piece portion 41 of the load transmission mechanism portion 1C, and FIG. 18 is a diagram for explaining the configuration of the first modification 60 and the second modification 70 of the sliding bearing 50 of the load transmission mechanism portion 1C. In FIGS. 12 and 13, the housing portion 22 is drawn with imaginary lines in order to make it easier to visually recognize the internal configuration of the load transmission mechanism portion 1C.

[0043] The load transmission mechanism portion 1C is provided with a link mechanism portion 37 and a sliding bearing 50 instead of the link mechanism portion 30 and the sliding bearing 13a of the load transmission mechanism portion 1B, as compared with the load transmission mechanism portion 1B according to the second embodiment. The load transmission mechanism portion 1C is attached to the training device 100 as the lifting and rocking portion 150 and receives an input from the user's hand. In the following description of the load transmission mechanism section 1C, for the components common to the load transmission mechanism section 1B, the same reference numerals as those used in the description of the load transmission mechanism section 1B in FIGS. 12 to 14 are attached, and the description thereof is omitted. Only the components different from the load transmission mechanism section 1B are described in detail.

[0044] The link mechanism section 37 includes a first end portion 37a connected to the lower end portion of the sliding shaft portion 13, a second end portion 37b connected to the orthogonal shaft portion 6, and a plurality of small piece portions 38 connecting the first end portion 37a and the second end portion 37b. The link mechanism section 37 includes a plurality of small piece portions 38 connecting one end side connected to the orthogonal shaft portion 6 and the other end side connected to the sliding shaft portion 13. The small piece portions 38 include a first small piece portion 39, a second small piece portion 40, a third small piece portion 41, and a fourth small piece portion 42.

[0045] Referring to FIG. 17, the first small piece portion 39 and the third small piece portion 41 will be described. The first small piece portion 39 and the third small piece portion 41 are rectangular parallelepipeds, called a connecting rod (hereinafter referred to as a conrod), etc., and are manufactured by hot forging or the like to obtain high strength and toughness. The first small piece portion 39 and the third small piece portion 41 each have a first through hole 39a and a second through hole 39b at both ends, and the first through hole 39a and the second through hole 39b extend in directions orthogonal to each other.

[0046] The first end portion 37a of the sliding shaft portion 13 has a through hole orthogonal to the axial direction of the sliding shaft portion 13. The first end portion 37a and the first small piece portion 39 are connected via a pin 43 inserted into this through hole. The first end portion 37a and the first small piece portion 39 are connected so as to be rotatable about the pin 43 as a first central axis.

[0047] The second small piece portion 40 is provided between the first small piece portion 39 and the third small piece portion 41, and connects the two by sandwiching the ends of the first small piece portion 39 and the third small piece portion 41 from the outside with two metal plates. The first small piece portion 39 and the second small piece portion 40 are rotatably connected about a pin 44 inserted into the second through hole 39b of the first small piece portion 39 as a second central axis. Since pin 43 and pin 44 are inserted into the first through hole 39a and the second through hole 39b provided in the first small piece portion 39, the first central axis and the second central axis are perpendicular to each other.

[0048] The second small piece portion 40 and the third small piece portion 41 are rotatably connected with the pin 45 inserted into the first through hole 39a of the third small piece portion 41 as the third central axis. Since pin 44 and pin 45 are parallel, the second central axis and the third central axis are parallel to each other. The fourth small piece portion 42 is provided between the third small piece portion 41 and the orthogonal axis portion 6, and connects the two by sandwiching the end of the third small piece portion 41 and a part of the orthogonal axis portion 6 from the outside with two metal plates.

[0049] The third small piece portion 41 and the fourth small piece portion 42 are rotatably connected with the pin 46 inserted into the second through hole 39b of the third small piece portion 41 as the fourth central axis. Since pin 45 and pin 46 are inserted into the first through hole 39a and the second through hole 39b provided in the third small piece portion 41, the third central axis and the fourth central axis are perpendicular to each other.

[0050] The fourth small piece portion 42 and the orthogonal axis portion 6 are rotatably connected with the pin 47 inserted into a through hole provided on the orthogonal axis portion 6 so as to be perpendicular to the axial direction of the orthogonal axis portion 6 on the circumferential surface as the fifth central axis. The small piece portion 38 having the first small piece portion 39, the second small piece portion 40, the third small piece portion 41, and the fourth small piece portion 42 is curved in the vertical direction with respect to the same plane including the first central axis (pin 43), the fourth central axis (pin 46), and the fifth central axis (pin 47), and is also curved in the vertical direction with respect to the same plane including the second central axis (pin 44) and the third central axis (pin 45). That is, the small piece portion 38 is curved in two orthogonal directions.

[0051] The horizontal movement and rotation of the orthogonal axis portion 6 are gradually transmitted to the sliding shaft portion 13 by the bending and deformation of the small piece portion 38 of the link mechanism portion 37, and are transmitted as the smooth movement of the sliding shaft portion 13. Therefore, the user who operates the gripping portion 160 can receive the load without feeling a sudden change in the increase or decrease of the load of the load applying portion 130 transmitted through the tension member 25, suppress the unexpected load on the muscles of the user, prevent muscle damage, and suppress friction, wear, impact, etc. applied to the training device 100. Further, when the small piece portion 38 bends in two orthogonal directions, the link mechanism portion 37 realizes a smooth connection between the orthogonal axis portion 6 and the sliding shaft portion 13. Therefore, since the link mechanism portion 37 can directly transmit the tension 19 to the user, even if the operation of the user's gripping portion 160 is fast or has a sudden change in speed, it can follow the user's operation immediately and transmit the tension 19 to the user.

[0052] <Regarding the operation of the link mechanism portion 37> With reference to FIG. 14, the operation of the link mechanism portion 37 when the main drive shaft portion 151 in the load transmission mechanism portion 1C is rotated will be described. FIG. 14 is a diagram for explaining the operation of the link mechanism portion 37 of the load transmission mechanism portion 1C. As can be seen from FIG. 14, the rotational movement of the orthogonal axis portion 6 is converted into the reciprocating movement of the sliding shaft portion 13 by a slider-crank mechanism. The slider-crank mechanism refers to a mechanism that converts the rotational movement of a crank pin into the reciprocating movement of a slider via a connecting rod. The crank pin of the slider-crank mechanism corresponds to the pin 45 and rotates around the orthogonal axis portion 6. The connecting rod of the slider-crank mechanism corresponds to the second small piece portion 40 of the link mechanism portion 37. The slider of the slider-crank mechanism corresponds to the first small piece portion 39 of the link mechanism portion 37. The reciprocating movement of the first small piece portion 39 becomes the reciprocating movement of the sliding shaft portion 13.

[0053] The link mechanism portion 37 changes its shape by changing the angle formed between each of the plurality of small piece portions 38 (39, 40, 41, 42) and the other adjacent small piece portions. The link mechanism portion 37 changes the curvature of the curve and the shape by changing the angle formed by the second small piece portion 40 and the third small piece portion 41 as the horizontal movement and rotation of the orthogonal axis portion 6 occur.

[0054] <Configuration of the sliding bearing 50 and operation of the sliding shaft portion 13> Next, with reference to FIGS. 15 and 16, the configuration of the sliding bearing 50 of the load transmission mechanism portion 1C and the operation of the sliding shaft portion 13 will be described. FIG. 15 is a diagram for explaining the operation of the sliding shaft portion 13 of the load transmission mechanism portion 1C, FIG. 16 is a diagram for explaining the configuration of the sliding bearing 50 of the load transmission mechanism portion 1C, FIG. 16(a) is a perspective view of the sliding bearing 50, and FIG. 16(b) is a cross-sectional view of the sliding bearing 50 cut along the cutting plane 50b shown in FIG. 16(a) as viewed from the direction of arrow A. FIG. 15 includes a cross-sectional view of the sliding bearing 50 and shows a state where the sliding shaft portion 13 swings while being supported by the sliding bearing 50. FIG. 15(a) shows a state where the sliding shaft portion 13 is supported by the first bearing hole 50g, FIG. 15(c) shows a state where the sliding shaft portion 13 is supported by the second bearing hole 50h, and FIG. 15(b) shows an intermediate state between the state shown in FIG. 15(a) and the state shown in FIG. 15(c) of the sliding shaft portion 13, showing a state where the sliding shaft portion 13 is supported by the constricted portion 50j.

[0055] The sliding shaft portion 13 swings so as to follow the direction of the tension 19 of the tension member 25. The direction of the tension 19 of the tension member 25 changes when the user causes the lifting and swinging portion (load transmission mechanism portion 1C) 150 to perform a turning motion about the guide post 140. The sliding shaft portion 13 swings so as to follow the turning motion of the lifting and swinging portion 150, so that the tension 19 can be received without a sudden change. For this reason, the user can receive an immediate load with respect to the force input to the lifting and swinging portion 150.

[0056] The sliding bearing 50 that pivotally supports the sliding shaft portion 13 has bearing holes (first bearing hole 50g, second bearing hole 50h) through which the sliding shaft portion 13 that swings in a plane with the axial direction of the orthogonal axis portion 6 being the vertical direction is obliquely inserted. As shown in Fig. 16, the sliding bearing 50 includes a first bearing hole 50g and a second bearing hole 50h. The sliding bearing 50 also has a side plane 50i that is a flat surface on the outer peripheral surface. As shown in Fig. 16(b), the first bearing hole 50g and the second bearing hole 50h are formed to penetrate obliquely through the inside of the sliding bearing 50, and the first bearing hole 50g and the second bearing hole 50h intersect at the central portion of the sliding bearing 50. The first bearing hole 50g is formed by an upper conical side surface portion 50c and a lower conical side surface portion 50f. The second bearing hole 50h is formed by an upper conical side surface portion 50e and a lower conical side surface portion 50d. As shown in Fig. 16(b), the constricted portion 50j is formed at the boundary between the upper conical side surface portion 50c and the lower conical side surface portion 50d, and at the boundary between the upper conical side surface portion 50e and the lower conical side surface portion 50f.

[0057] <Regarding the modified example of the sliding bearing 50> With reference to Fig. 18, a sliding bearing 60 which is a first modified example of the sliding bearing 50 and a sliding bearing 70 which is a second modified example will be described. Fig. 18 is a diagram for explaining the configurations of a first modified example (sliding bearing 60) and a second modified example (sliding bearing 70) of the sliding bearing 50 in the load transmission mechanism portion 1C. Fig. 18(a) is a perspective view of the sliding bearing 60 which is the first modified example, and Fig. 18(b) is a perspective view of the sliding bearing 70 which is the second modified example.

[0058] As shown in Fig. 18(a), the sliding bearing 60 according to the first modified example has a bearing hole 60d in the shape of an inverted circular truncated cone. The bearing hole 60d includes an oblique conical side surface portion 60e and a minimum diameter bearing hole portion 60f at the lower end. When the sliding shaft portion 13 is in a vertical state and an inclined state, the sliding shaft portion 13 is supported by the minimum diameter bearing hole portion 60f. And when the sliding shaft portion 13 is in a state of maximum inclination, the sliding shaft portion 13 abuts against the oblique conical side surface portion 60e and is supported by the oblique conical side surface portion 60e and the minimum diameter bearing hole portion 60f.

[0059] As shown in Fig. 18(b), the sliding bearing 70 according to the second modified example has a constricted portion 70g at the central portion in the axial direction. The sliding bearing 70 has a bearing hole 70d with a shape that includes an upper inclined conical side surface portion 70e and a lower inclined conical side surface portion 70f, and has a shape similar to a drum. The constricted portion 70g is formed at the boundary between the upper inclined conical side surface portion 70e and the lower inclined conical side surface portion 70f. When the sliding shaft portion 13 is in a vertical state and an inclined state, the sliding shaft portion 13 is supported by the constricted portion 70g. And in a state where the sliding shaft portion 13 is inclined to the maximum extent, the sliding shaft portion 13 abuts against the upper inclined conical side surface portion 70e or the lower inclined conical side surface portion 70f, and is supported by the constricted portion 70g and the upper inclined conical side surface portion 70e or the lower inclined conical side surface portion 70f.

[0060] In the load transmission mechanism portion 1C, even when the sliding bearing 50 is replaced with the sliding bearing 60 or the sliding bearing 70, the sliding shaft portion 13 can swing within a plane in which the axial direction of the orthogonal shaft portion 6 is the vertical direction. In the case of the sliding bearing 60 according to the first modification example, the sliding shaft portion 13 swings while being supported by the minimum diameter bearing hole portion 60f inside the bearing hole 60d having an inverted truncated cone shape. In the case of the sliding bearing 70 according to the second modification example, the sliding shaft portion 13 swings while being supported by the constricted portion 70g inside the bearing hole 70d having a shape similar to a drum. Even if the sliding bearing 60 or 70 which is a modification example is adopted instead of the sliding bearing 50 for the sliding shaft portion 13, the sliding shaft portion 13 swings so as to follow the turning motion of the elevating and swinging portion 150, so that the tension 19 can be received without a rapid change, and the user can receive an immediate load with respect to the force input to the elevating and swinging portion 150.

[0061] <Regarding the outline of the training device 100> Referring to FIGS. 6 to 11, the training device 100 will be described. The training device 100 is a device to which a load transmission mechanism portion 1A that receives an input from the foot and an elevating and swinging portion 150 that receives an input from the hand are attached, and corresponds to the movements of both the lower limbs and the upper limbs. Note that the load transmission mechanism portion 1B or 1C may be used for the elevating and swinging portion 150.

[0062] FIG. 6 is a perspective view of the training device 100, FIG. 7 is an enlarged perspective view of the footrest portion 11 of the training device 100, FIG. 8 is a diagram for explaining the operation of the footrest portion 11 of the training device 100 during use, FIG. 9 is a side view showing a first mode during the use of the training device 100, FIG. 10 is a side view showing a second mode during the use of the training device 100, and FIG. 11 is a side view showing a third mode during the use of the training device 100.

[0063] The training device 100 includes a seating portion 110 for a user to sit on, a load applying portion 130 for applying a load, and a columnar guide post 140 extending in the vertical direction. Further, the training device 100 includes a lifting and swinging portion 150 that is guided by the guide post 140 and is movable up and down and rotatably connected, and a gripping portion 160 provided on the lifting and swinging portion 150. Further, the training device 100 includes a footrest portion 11 for placing the user's feet, slide rails 122a and 122b, a load transmission mechanism portion 1B, and a tension member 25. The gripping portion 160 corresponds to the footrest portion 11 of the load transmission mechanism portion 1A and is an input portion that receives an input of force from the user's hand.

[0064] First, with reference to FIGS. 6 and 7, the structure of the training device 100 will be described. In the training device 100 shown in FIG. 6, the seating portion 110 is supported by a framework 120 that serves as a base frame of the training device 100. The framework 120 forms the skeleton of the entire training device 100 and has the function of stabilizing and installing the training device 100 on the floor surface. The framework 120 can be formed by processing, for example, square pipe materials or plate materials made of materials having a certain degree of rigidity such as steel, aluminum, stainless steel, and resin, and fixing them by bolts, welding, or the like.

[0065] The seating part 110 consists of a seat 111 on which the user sits and a seat support column 112 that supports the seat 111. The seat support column 112 is fixed to the framework 120. And the seat support column 112 holds the seat 111. Although not shown in the figure, the seat support column 112 is provided with a through hole for allowing the tension member 25 to pass through in the front - rear direction. The seat 111 is the place where the user of the training device 100 sits. As shown in FIG. 6, it is a rectangle that is long in the left - right direction of the training device 100. This is to enable the user to sit on either the right or left side of the seat 111. However, if the user can sit comfortably, it does not have to be a rectangle, and it can be a square or a circle instead.

[0066] As shown in FIG. 6, the seating part 110 may be provided with a backrest 115 for the user to support the body during use, behind the seat 111 and between it and the load applying part 130. The framework 120 is provided with a guide column 140 that extends in the vertical direction. As shown in FIG. 6, the guide column 140 is provided at a position in front of the load applying part 130 and behind the seating part 110. As shown in FIG. 6, the framework 120 is provided with a direction - changing pulley 181a and a direction - changing pulley 181b for guiding the tension member 25 in the vertical direction at a position above the guide column 140. The direction - changing pulley 181a and the direction - changing pulley 181b are housed in an upper housing 125 located at the top of the framework 120. The lower end of the guide column 140 is connected to the framework 120, and the upper end is connected and fixed to the upper housing 125.

[0067] As shown in FIG. 6, the guide column 140 may be provided with a shock - absorbing material 141. The shock - absorbing material 141 is a member for alleviating the shock when the lifting and swinging part 150 comes into contact with the upper housing 125 and the framework 120. The shock - absorbing material 141 may be realized by rubber, sponge, etc. as an example.

[0068] The guide post 140 is attached with a lifting and swinging part 150 shown in Fig. 6. As shown in Fig. 6, the lifting and swinging part 150 is attached to the guide post 140 so as to be movable up and down. The lifting and swinging part 150 has a connecting cylinder part 8 which serves as a through hole for inserting the guide post 140 (see Fig. 5). Therefore, the lifting and swinging part 150 moves up and down along the guide post 140. Further, the lifting and swinging part 150 is attached to the guide post 140 so as to be rotatable with respect to the guide post 140 about the guide post 140 as the central axis. Therefore, a certain rigidity is required for the guide post 140. Thus, as an example, the guide post 140 may be made of stainless steel or the like.

[0069] As shown in Fig. 6, the load transmission mechanism part 1A of the training device 100 slides along the slide rails 122a and 122b. The slide rails 122a and 122b are suspended from the frame 120 of the training device 100 and the frame 121 arranged in front of the frame 120, and are fixed at both ends.

[0070] As shown in Fig. 6, the load applying part 130 includes a pair of columnar weight guide posts 132 whose upper and lower parts are fixed to the frame 120, and a weight 133 that is provided so as to be movable up and down with respect to the weight guide post 132. The weight 133 is provided with a through hole for inserting the weight guide post 132. The load applying part 130 is configured to be able to adjust the magnitude of the applied load. Specifically, the weight 133 such as a stack weight which is a weight member is made into a plate-like member, and the load can be adjusted by the number of sheets. Therefore, the load applying part 130 may be provided with a clamp (not shown) for adjusting the number of sheets by which a plurality of weights 133 are connected and separated from each other and stacked. Further, an impact absorbing material 131 is provided on the weight guide post 132 to suppress the weight 133 from colliding with the frame 120 with an impact more than a certain level.

[0071] The tension member 25 has one end connected to a connection portion 179 provided at the first end portion 13b of the sliding shaft portion 13 of the load transmission mechanism portion 1A, and the other end connected to a connection portion 180b of the elevating and swinging portion 150. The tension member 25 passes through a direction-changing pulley 181a and a direction-changing pulley 181b housed in the upper housing 125, a direction-changing pulley 182 provided on the upper surface of the weight 133, a direction-changing pulley 183 disposed between the backrest 115 and the framework 120, a direction-changing pulley 184 and a direction-changing pulley 186 disposed below the seating portion 110, and a direction-changing pulley 185h disposed in front of the seating portion 110.

[0072] As shown in FIG. 8, the footrest portion 11 can reciprocate in the direction of arrow 190 along the two slide rails 122a and 122b in accordance with the flexion and extension movement of the user's legs, can reciprocate in the left-right direction (the direction of arrow 192 shown in FIG. 8) as viewed from the user, and can further rotate (arrow 191 shown in FIG. 8) about the main drive shaft portion 4. The reciprocating movement of the footrest portion 11 in the left-right direction (the direction of arrow 192 shown in FIG. 8) induces the rotation of the footrest portion 11 (arrow 191 shown in FIG. 8), and the rotation of the footrest portion 11 (arrow 191 shown in FIG. 8) induces the reciprocating movement of the footrest portion 11 in the left-right direction (the direction of arrow 192 shown in FIG. 8). That is, the user can perform the flexion and extension movement of the leg with the foot placed on the footrest portion 11, and by performing the reciprocating movement of the footrest portion 11 in the left-right direction (the direction of arrow 192 shown in FIG. 8), the user can also perform the rotation of the footrest portion 11 (arrow 191 shown in FIG. 8). Also, the user can perform the flexion and extension movement of the leg with the foot placed on the footrest portion 11, and by rotating the footrest portion 11 (arrow 191 shown in FIG. 8), the user can also perform the reciprocating movement of the footrest portion 11 in the left-right direction (the direction of arrow 192 shown in FIG. 8). Therefore, the user can simultaneously perform three different-direction movements of the legs, and by using a wide range of leg muscles, the user can perform exercises to suppress muscle stiffness.

[0073] <Method of using the training device 100> Referring to FIGS. 9 to 11, a method of using the training device 100 will be described. As an initial posture of the user, the user assumes a posture in which the knee joint is bent and the instep is placed straight upward on the footrest portion 11 (see FIG. 9). In the state of the user's initial posture, the footrest portion 11 is located on the side closer to the user's body with the user's leg bent. Next, while gradually extending the knee joint from the bent state of the knee joint in the initial posture, the user rotates the leg so as to tilt the knee joint inward (see FIG. 10). Then, in the state where the knee joint is maximally opened, the user maximally tilts the knee joint inward (see FIG. 11). At this time, the footrest portion 11 rotates clockwise as viewed from the user and induces a straight-ahead movement in the right direction as viewed from the user.

[0074] As shown in FIG. 10, from the state where the foot is extended, the load transmission mechanism portion 1A is slowly slid along the slide rails 122a and 122b so as to return to the original position. Since the tension 19 of the tension member 25 acts on the load transmission mechanism portion 1A, the load transmission mechanism portion 1A tries to return to the initial position shown in FIG. 9. This movement is repeatedly executed a certain number of times. That is, the user repeatedly assumes the postures between FIGS. 9 and 10 a predetermined number of times.

[0075] In addition, as shown in FIG. 11, the user may push the load transmission mechanism portion 1A further away by twisting the waist more than in the state shown in FIG. 10. In that case, the user can exercise the waist while extending the foot. Such a posture is also possible because the footrest portion 11 is configured to be rotatable around the axis of the main shaft portion 4 with respect to the main body of the load transmission mechanism portion 1A. The user may perform a flexion and extension movement of the foot between FIGS. 9 and 10, or may perform a flexion and extension movement of the foot accompanied by a twist of the waist between FIGS. 9 and 11. The flexion and extension movements accompanied by twisting of the leg performed between FIGS. 9 and 10 and between FIGS. 9 and 11 simultaneously induce a straight-ahead movement in the left-right direction of the leg. Therefore, the degree of freedom of movement of the user's lower limbs is expanded, and the user can move the leg in a plurality of directions simultaneously.

[0076] Also, although not shown in the figures, the user may sit on the opposite side of the seat 111 in FIGS. 9 to 11 and on the left side of the training device 100 (the back side in the plane of FIGS. 9 to 11). That is, when the user sits on the seat 111 such that the load transfer mechanism unit 1A is on his or her right side and the backrest 115 is on the left side, the user can also perform movements with the right foot.

[0077] Therefore, the user can use the training device 100 to perform two-way rotational movements around the waist while exercising both feet. Specifically, the user spreads the legs and performs an action of pushing out as if kicking the load transfer mechanism unit 1A. For this reason, it is an excellent example for strengthening the muscles around the hip joint, around the pelvis, the thigh, the knee, etc. of the user.

[0078] Each muscle group of the leg can obtain the timing of "relaxation - extension - shortening" and can operate in a coordinated manner. Specifically, in the state shown in FIG. 9, it can be said that the load of the load applying unit 130 is not applied to the left foot and the muscle is in a state of "elongation". Also, the state shown in FIG. 9 is a state where the foot is just placed on the footrest 11 and is in an overall relaxed state, so it can also be said that it is in a state of "relaxation".

[0079] From here, the user applies force to the foot and pushes the load transfer mechanism unit 1A to which the load by the load applying unit 130 is applied. That is, in the process shown from FIG. 9 to FIG. 10 or FIG. 11, the load of the load applying unit 130 is applied to the left foot of the user, and a "shortening" state can be generated in the muscles of the left foot of the user. In the "shortening" state of the muscles of the left foot of the user, since the load transfer mechanism unit 1A simultaneously applies a straight-ahead movement in the left-right direction to the flexion-extension movement accompanied by twisting of the leg, the degree of freedom of movement of the lower limb is increased and the excessive load applied to the muscles of the left foot can be released, making it possible to suppress the hardening of the muscles and obtain muscular strength with flexibility and elasticity.

[0080] And in the process of transitioning from the state shown in FIG. 10 or FIG. 11 to the state shown in FIG. 9, by returning the leg to the state of FIG. 9, a state of "extension" of the muscle can be produced. Also in the process of producing the state of "extension" of the muscle, since the load transmission mechanism portion 1A simultaneously applies a straight-ahead movement in the left-right direction to the flexion and extension movement accompanied by twisting of the leg, the degree of freedom of movement of the lower limb is increased and a sudden change in the load applied to the muscles of the left leg can be suppressed, so that hardening of the muscles can be suppressed and muscular strength with flexibility and elasticity can be obtained.

[0081] Therefore, from the state shown in FIG. 9 until the state shown in FIG. 10 or FIG. 11 is reached, by moving the load transmission mechanism portion 1A and then repeating the cycle of the movement of returning to the state shown in FIG. 9, the timings of "relaxation - extension - shortening" can be produced and the operations can be performed in a coordinated manner. Regarding the movement of the leg, the state shown in FIG. 9 may be used as the initial state, or the state shown in FIG. 10 or FIG. 11 may be used as the initial state to perform one cycle of movement. However, since it is desirable to start the movement from the "relaxed" state, when starting the movement with the state shown in FIG. 10 or FIG. 11 as the initial state, it is desirable to start the movement from a state without load with the cooperation of others, etc. in the initial state.

[0082] In the movements of FIGS. 9 and 10, the user may sit on the seating portion 110 with the load transmission mechanism portion 1A facing forward and the backrest 115 on the back, and perform the movement with respect to the training device 100.

[0083] The training device 100 is a device that appropriately trains leg muscles and the like through initial load training (registered trademark). Initial load training is defined as "training that utilizes body changes to positions where reflexes occur and accompanying changes in the center of gravity position, etc., promotes a series of actions of "relaxation - extension - shortening" of the prime mover muscles, and is performed while preventing co - contraction of the antagonist muscles and muscles that act antagonistically." A reflex is an unconscious reaction. Initial load training is completely different from end - load training, which applies a load until the end and hypertrophies the muscles while accompanying muscle tension (hardening).

[0084] During the initial load training of the lower limbs using the training device 100, when performing the flexion and extension movement of the leg with torsion, a straight - line movement of the leg in the left - right direction is simultaneously induced. Therefore, excessive application of the load to the muscles during the process of this movement can be suppressed, and the muscle tension (hardening) can be relaxed.

[0085] Note that the present invention is not limited to the load transmission mechanism parts 1A, 1B, and 1C for the training device according to the above - described embodiments, and the training device 100 using the same. As long as it does not deviate from the gist of the present invention described in the claims, it can be implemented by various other modification examples or application examples.

Explanation of Reference Numerals

[0086] 1A Load transmission mechanism part for the training device of the first embodiment 1B Load transmission mechanism part for the training device of the second embodiment 1C Load transmission mechanism part for the training device of the third embodiment 1K First rotation transmission part 1M Second rotation transmission part 4 Prime mover shaft part 4a Prime mover bearing 4c Prime mover sprocket 4d Tip part 4e Moving direction 5 Intermediate shaft part 5a Intermediate bearing c Intermediate shaft sprocket 5d Intermediate shaft bevel gear 6 Orthogonal shaft part 6a Orthogonal bearing 6c Orthogonal bevel gear 7a Connection part 7b Connection part 8 Connection cylinder part 8a Connection cylinder part 8b Connection cylinder part 10 Transmission chain 11 Footrest part 13 Sliding shaft part 13a Sliding bearing 13b First end part 13c Second end part 19 Tension 20 Guide part 20a First guide 20b Second guide 20c Slider part 20d Guide support base 22 Housing part 22a Side surface 22b Lower housing part 23 Connecting part 23a First fixing piece 23b Second fixing piece 25 Tensile member 30 Link mechanism part 30a First link 30b Second link 30c First joint 30d Second joint 34 Long hole 37 Link mechanism part 37a First end part 37b Second end part 38 Small piece part 39 First small piece part 39a First through hole 39b Second through hole 40 Second small piece part 41 Third small piece part 42 Fourth small piece part 43 Pin (first central axis) 44 Pin (second central axis) 45 pins (third central axis) 46 pins (fourth central axis) 47 pins (fifth central axis) 50 sliding bearing 50b cutting surface 50c upper conical side surface 50d lower conical side surface 50e upper conical side surface 50f lower conical side surface 50g first bearing hole 50h second bearing hole 50i side plane 50j constricted part 60 sliding bearing (first modified example) 60d bearing hole 60e inclined conical side surface 60f minimum diameter bearing hole part 70 sliding bearing (second modified example) 70d bearing hole 70e upper inclined conical side surface 70f lower inclined conical side surface 70g constricted part 100 training instrument 110 seating part 111 seat 112 seat pillar 115 backrest 120 framework 121 framework 122a slide rail 122b slide rail 125 upper housing 126 direction-changing guide wheel 130 load applying part 131 shock absorber 132 weight guide pillar 133 weight 140 guide pillar 141 shock absorber 150 lifting and rocking part 151 driving shaft part 151c tip part 160 gripping part 163 frame part 164 grip bar 172 Bearing 173 Third rotating shaft 174a Side plate 174b Side plate 179 Connection part 180b Connection part 181a Direction-changing pulley 181b Direction-changing pulley 182 Direction-changing pulley 183 Direction-changing pulley 184 Direction-changing pulley 185h Direction-changing pulley 186 Direction-changing pulley 190 Arrow 191 Arrow 192 Arrow

Claims

1. An input unit for a user to input force is connected, a driving shaft unit that rotates together with the input unit, An intermediate shaft unit that rotates in conjunction with the rotation of the driving shaft unit, A first rotation transmission unit that interlocks between the driving shaft unit and the intermediate shaft unit and is used for transmitting rotation between the driving shaft unit and the intermediate shaft unit, A second rotation transmission unit that interlocks between the intermediate shaft unit and an orthogonal shaft unit orthogonal to the intermediate shaft unit and is used for transmitting rotation between the intermediate shaft unit and the orthogonal shaft unit, A sliding shaft unit that receives tension from the outside and reciprocates, A connecting unit that connects the driving shaft unit, the intermediate shaft unit, and the orthogonal shaft unit, A slider unit attached to the connecting unit, A guiding unit that guides the moving direction of the connecting unit via the slider unit, A link mechanism unit having one end connected to the orthogonal shaft unit and the other end connected to the sliding shaft unit, and converting the rotation and linear movement of the orthogonal shaft unit into the linear movement of the sliding shaft unit, A load transmission mechanism unit for a training device, characterized by comprising the above.

2. The guiding unit guides the slider unit in a direction orthogonal to the axial direction of the orthogonal shaft unit and the axial direction of the intermediate shaft unit. The load transmission mechanism unit for a training device according to Claim 1.

3. The input unit is a gripping unit for a user to grip or a footrest for a user. The load transmission mechanism unit for a training device according to Claim 1.

4. A connection unit for connecting to a training device is provided. The load transmission mechanism unit for a training device according to Claim 1.

5. The first rotation transmission unit is a transmission chain, A driving shaft sprocket is provided on the driving shaft unit, An intermediate shaft sprocket is provided on the intermediate shaft unit, The load transmission mechanism unit for a training device according to Claim 1, characterized in that the transmission chain is suspended between the driving shaft sprocket and the intermediate shaft sprocket.

6. The second rotation transmission unit is An intermediate shaft bevel gear provided on the intermediate shaft unit, A load transmission mechanism unit for a training device according to Claim 1, characterized by comprising an orthogonal shaft bevel gear provided on the orthogonal shaft unit and meshing with the intermediate shaft bevel gear.

7. The tension is generated by a load applying unit that freely adjusts the magnitude of the load of the training device. The load transmission mechanism unit for a training device according to Claim 1.

8. The load transmission mechanism for a training device according to claim 1, wherein the link mechanism portion includes a plurality of small pieces connecting one end side connected to the orthogonal axis portion and the other end side connected to the sliding axis portion.

9. The load transmission mechanism for a training device according to claim 8, wherein the link mechanism portion changes its shape by changing the angle formed by each of the plurality of small pieces with another adjacent small piece.

10. The load transmission mechanism for a training device according to claim 1, wherein the sliding bearing that pivotally supports the sliding axis portion has a bearing hole through which the sliding axis portion that swings in a plane with the axial direction of the orthogonal axis portion being the vertical direction is obliquely inserted.

11. The load transmission mechanism for a training device according to claim 10, wherein the bearing hole has a shape of an inverted conical frustum.

12. The load transmission mechanism for a training device according to claim 10, wherein the bearing hole has a constricted portion at the central portion in the axial direction.

13. A training device characterized by comprising the load transmission mechanism for a training device according to claim 1.

Images