Load-type training device

Abstract

To provide a load-type training device that allows multiple pulling force transmission mechanisms to be installed without increase in the number of actuators, thereby enabling simplification of the structure, downsizing of the entire device, reduction of manufacturing costs, and the like.SOLUTION: A load-type training device 1 according to the present invention comprises: a main wire 14; end portion transmission mechanisms 13 and free-end intermediate transmission mechanisms 15 that are provided at a plurality of locations along the main wire 14 and that serve as pulling force transmission mechanisms capable of transmitting a pulling force of a user to the main wire 14; and actuators 11 capable of imparting a load that acts against the pulling force of the user to one end portion of the main wire 14. The number of actuators 11 is less than the number of pulling force transmission mechanisms.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a load training device for applying a load to train a user's body.

Background Art

[0002] In recent years, as awareness of health has been increasing, various training devices for exercising each part of the body have been proposed. As one type of this training device, a load training device is known in which a user exercises against a load to efficiently train muscles and the like.

[0003] This load training device includes a wire, a traction force transmission mechanism capable of transmitting a user's traction force to the wire, and an actuator capable of applying a load to the wire against the user's traction force. For example, Patent Document 1 discloses a fitness training device 100 (corresponding to a load training device) including a cable 21 (corresponding to a wire), a line 20 (corresponding to a traction force transmission mechanism), and an electric motor 31 (corresponding to an actuator).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in conventional load-type training devices, since one or more actuators are provided for one traction transmission mechanism, when a plurality of traction transmission mechanisms are provided, the number of actuators increases accordingly. For example, in the load-type training device of Patent Document 1, corresponding to the provision of two traction transmission mechanisms for the user's left hand and right hand, a total of four actuators, two on the left and two on the right, are provided. Thus, in conventional load-type training devices, since the number of actuators increases with the increase in the number of traction transmission mechanisms, there has been a problem leading to complications in the structure, enlargement of the entire device, increase in manufacturing costs, and the like.

[0006] Therefore, the present invention was conceived in view of such circumstances, and its object is to provide a load-type training device capable of simplifying the structure, miniaturizing the entire device, reducing manufacturing costs, etc., without increasing the number of actuators even when a plurality of traction transmission mechanisms are provided.

Means for Solving the Problems

[0007] A load-type training device according to one aspect of the present invention is a load-type training device for applying a load to train a user's body, comprising a main wire, a traction transmission mechanism provided at a plurality of locations on the main wire and capable of transmitting the user's traction force to the main wire, and an actuator capable of applying a load to one end of the main wire against the user's traction force, characterized in that the number of the actuators is less than the number of the traction transmission mechanisms.

[0008] In the load-type training device according to one aspect of the present invention, the other end of the main wire may be a free end, and the traction transmission mechanism may include an end transmission mechanism provided at the other end of the main wire and an intermediate transmission mechanism for the free end provided at an intermediate portion of the main wire.

[0009] Further, in the load type training device according to one aspect of the present invention, the intermediate part transmission mechanism for the free end includes a movable pulley unit including a first movable pulley around which an intermediate part of the main wire is wound, and a second movable pulley connected to the first movable pulley, a sub-wire having an intermediate part wound around the second movable pulley, one end being a free end and the other end being a fixed end, and an acting part provided at one end of the sub-wire for a user to apply a traction force.

[0010] Further, in the load type training device according to one aspect of the present invention, a frame that houses the main wire and the sub-wire inside and is provided so that the other end of the main wire and the other end of the sub-wire can be respectively drawn out to the outside, and a movable pulley guide part provided on the frame so as to extend from the other end side of the main wire toward the other end side of the sub-wire to guide the movement of the movable pulley unit may be further provided.

[0011] Further, in the load type training device according to one aspect of the present invention, the movable pulley guide part may be provided as a gap capable of housing the movable pulley unit inside.

[0012] Further, in the load type training device according to one aspect of the present invention, the other end of the main wire may be a fixed end, and the traction force transmission mechanism may have a plurality of intermediate part transmission mechanisms for the fixed end provided at the intermediate part of the main wire.

[0013] Further, in the load type training device according to one aspect of the present invention, each of the plurality of intermediate part transmission mechanisms for the fixed end may include a third movable pulley around which an intermediate part of the main wire is wound, and an acting part connected to the third movable pulley for a user to apply a traction force.

[0014] Further, in the load type training device according to one aspect of the present invention, the actuator may include a pulley capable of winding up one end of the main wire, and a motor for rotationally driving the pulley.

[0015] Further, in the load type training device according to one aspect of the present invention, the motor may drive one axial end of the rotation axis of the pulley, and the pulley may be formed such that its outer diameter decreases from one axial end side of the rotation axis toward the other axial end side.

[0016] Also, in the load type training device according to one aspect of the present invention, the number of the traction force transmission mechanisms may be two, and the number of the actuators may be one.

Advantages of the Invention

[0017] According to the load type training device according to one aspect of the present invention, even if a plurality of traction force transmission mechanisms are provided, the number of actuators does not increase accordingly, and simplification of the structure, miniaturization of the entire device, reduction of manufacturing costs, etc. become possible.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0019] Hereinafter, a load type training device according to an embodiment of the present invention will be described with reference to the drawings.

[0020] (Configuration of the Load Type Training Device According to the First Embodiment) First, the configuration of the load type training device according to the first embodiment of the present invention will be described. FIGS. 1 to 5 are diagrams showing the configuration of the load type training device 1 according to the first embodiment of the present invention, and FIG. 1 is a schematic perspective view showing its appearance. The load type training device 1 includes a frame 2, a training mechanism 3, and moving wheels 4.

[0021] (Frame) The frame 2 is a frame body formed by molding resin or the like. As shown in FIG. 1, this frame 2 has a main frame 5 having a substantially rectangular shape in plan view, and a side frame 6 provided at one end side in the longitudinal direction of the main frame 5. The main frame 5 serves to receive the reaction force from the user when the user rides on it. The main frame 5 is formed in a housing shape, and a pair of wire passing holes 7 are formed at both ends in the longitudinal direction thereof, penetrating the upper surface in the thickness direction. On the other hand, the side frame 6 serves to house an actuator or the like described later. This side frame 6 is also formed in a housing shape and is fixedly provided at one end in the longitudinal direction of the main frame 5.

[0022] FIG. 2 is a schematic perspective view showing a state in which the main frame 5 and the side frame 6 are removed at one longitudinal end side of the main frame 5. The frame 2 further has a pair of inner frames 8 provided inside the main frame 5. The pair of inner frames 8 has a rectangular tube shape with a substantially rectangular cross section, and its length is approximately the same as that of the main frame 5, and its width is formed narrower than that of the main frame 5. The pair of inner frames 8 thus configured are respectively arranged at the bottom of the main frame 5 in parallel in the longitudinal direction with a predetermined interval in the width direction. Note that the material and shape of the frame 2 are not limited to this embodiment and can be appropriately changed in design.

[0023] (Training mechanism) The training mechanism 3 is used to apply a load to the user's body for training. As shown in FIGS. 1 and 2, this training mechanism 3 includes a moving pulley guide portion 9, a wire guide unit 10, an actuator 11, a via pulley 12, an end transmission mechanism 13, a main wire 14, an intermediate transmission mechanism 15 for the free end, a tension sensor 16, and a main control device 17.

[0024] The moving pulley guide portion 9 serves to accommodate a moving pulley unit 36 described later inside and guide its movement. As shown in FIG. 2, the moving pulley guide portion 9 is constituted by a gap with a predetermined width provided between the pair of inner frames 8, and is provided so as to extend over its entire length in the longitudinal direction of the main frame 5. Although not shown in detail in the figure, instead of this embodiment, for example, by forming a groove on the surface of the frame 2 or by attaching a rail to the frame 2, it is also possible to constitute the moving pulley guide portion 9.

[0025] The wire guide unit 10 serves to guide the main wire 14 and the sub-wire, which will be described later, so that they can be pulled out from the wire passing hole 7. FIG. 3 is an exploded perspective view showing the wire guide unit 10 in an exploded state. The wire guide unit 10 includes a support member 18, a pipe member 19, a fixed pulley 20, and a shaft member 21.

[0026] The support member 18 serves to support the shaft member 21 at both ends. As shown in FIG. 3, this support member 18 is a box-shaped member made of metal or the like with an open upper surface and back surface. This support member 18 has a pipe insertion hole 22 formed through its front surface and a pair of shaft insertion holes 23 respectively formed through its left and right side surfaces.

[0027] The pipe member 19 serves to guide and protect the main wire 14 passing through its interior and the sub-wire 38 to be described later. As shown in FIG. 3, this pipe member 19 is a cylindrical member made of metal or the like, with its inner diameter set larger than that of the main wire 14 and the sub-wire 38, and its outer diameter set substantially equal to the inner diameter of the pipe insertion hole 22 of the support member 18. Further, the pipe member 19 has a long hole 24 formed by partially notching the circumferential surface of its axial intermediate portion. The pipe member 19 configured in this way is inserted into the pipe insertion hole 22 of the support member 18, with the long hole 24 positioned inside the support member 18 and facing upward, and is fixed to the support member 18 by welding or the like.

[0028] The fixed pulley 20 serves to change the extending direction of the main wire 14 and the sub-wire and to reduce the frictional force generated by sliding with these. As shown in FIG. 3, this fixed pulley 20 is a cylindrical member made of resin or the like. The fixed pulley 20 has a concave groove portion 25 formed on its circumferential surface and a shaft insertion hole 26 formed axially through its central portion. Here, the inner diameter of the shaft insertion hole 26 is set substantially equal to the inner diameter of the shaft insertion hole 23 of the support member 18. The fixed pulley 20 configured in this way is housed inside the support member 18 and is arranged such that the position of its shaft insertion hole 26 coincides with the position of the shaft insertion hole 23 of the support member 18.

[0029] The shaft member 21 serves as the rotating shaft of the fixed pulley 20. As shown in FIG. 3, this shaft member 21 is a cylindrical member made of metal or the like. The length of this shaft member 21 is set to be approximately equal to the distance between the left and right side surfaces of the support member 18. The shaft member 21 configured in this way is inserted through the shaft insertion hole 26 of the fixed pulley 20, and both ends thereof are inserted into the shaft insertion holes 23 of the support member 18 and fixed by welding or the like. Thereby, the shaft member 21 is provided so as to be bridged between the left and right side surfaces of the support member 18 while rotatably supporting the fixed pulley 20.

[0030] As shown in FIGS. 1 and 2, the wire guide unit 10 configured in this way is disposed inside the movable pulley guide portion 9 at positions corresponding to the pair of wire passing holes 7 of the main frame 5. Although not shown in detail in the figure, for the pair of left and right wire guide units 10, the portions of the pipe member 19 that protrude outside the support member 18 with the pipe insertion hole 22 interposed therebetween are rotatably supported by the main frame 5. Thereby, the entire wire guide unit 10 is swingable around the pipe member 19.

[0031] The actuator 11 serves to apply a load to one end of the main wire 14 against the pulling force of the user. As shown in FIG. 2, this actuator 11 includes a motor 27, a drive gear 28, a driven gear 29, a winding pulley 30, and a motor driver 31. The actuator 11 configured in this way is housed inside the side frame 6 shown in FIG. 1.

[0032] The motor 27 serves to generate, as a rotational driving force, the load to be applied to the main wire 14. As shown in FIG. 2, this motor 27 has a motor main body portion 32 fixedly installed inside the side frame 6, and a motor shaft portion 33 rotatably supported by the motor main body portion 32. The drive gear 28 and the driven gear 29 serve to transmit the rotational driving force of the motor 27 to the take-up pulley 30. The drive gear 28 is fixedly provided on the peripheral surface of the motor shaft portion 33. On the other hand, the driven gear 29 is formed to have a larger diameter and more teeth than the drive gear 28, and is arranged to mesh with the drive gear 28.

[0033] The take-up pulley 30 serves to transmit the rotational driving force of the motor 27 as a tensile force to the main wire 14 by winding one end portion of the main wire 14. As shown in FIG. 2, this take-up pulley 30 has a pulley shaft portion 34 (the "rotating shaft" according to the present invention) and a pulley main body portion 35. The pulley shaft portion 34 has a substantially cylindrical shape. Although not shown in detail in the figure, one end portion thereof is fixed to the driven gear 29, and the other end portion is rotatably supported by the side frame 6 in both forward and reverse directions. The pulley main body portion 35 has a so-called tapered shape in which the outer diameter gradually decreases from the base end side (the side of the driven gear 29) toward the tip end side (the side of the side frame 6), and is fixedly provided on the outer peripheral surface of the pulley shaft portion 34. In this specification, the rotation of the take-up pulley 30 that winds up the main wire 14 is defined as forward rotation, and the rotation of the take-up pulley 30 that pays out the main wire 14 is defined as reverse rotation.

[0034] The motor driver 31 serves to control the operation of the motor 27 by controlling the amount, direction, timing, etc. of the current flowing through the motor 27, and also serves to protect the motor 27 when an abnormality occurs. As shown in FIG. 2, this motor driver 31 is arranged adjacent to the motor 27. It should be noted that it is also possible to control the operation of the motor 27 by the main control device 17 without providing the motor driver 31.

[0035] The via pulley 12 serves to guide one end of the main wire 14 to the take-up pulley 30 of the actuator 11 while avoiding contact with the frame 2. This via pulley 12 is a cylindrical member made of resin or the like. Although not shown in detail in the figure, a groove for winding the main wire 14 is formed on the circumferential surface of the via pulley 12. The via pulley 12 configured in this way is rotatably supported inside the side frame 6 at a position close to the open end of the movable pulley guide portion 9 with its axial direction oriented vertically.

[0036] The end transmission mechanism 13 corresponds to the traction transmission mechanism according to the present invention and serves to transmit the traction force of the user to the other end of the main wire 14. As shown in FIG. 2, this end transmission mechanism 13 is configured as a ring-shaped handle made of resin or the like. The user can apply a traction force to the other end of the main wire 14 by gripping and pulling this end transmission mechanism 13 by hand, or by hooking a foot on the end transmission mechanism 13 and pulling.

[0037] The main wire 14 serves to transmit the traction force of the user and the driving force of the actuator 11. This main wire 14 is a so-called resin wire and is a linear member made of polyethylene or the like. As shown in FIG. 2, this main wire 14 is accommodated in the gap between the movable pulley guide portion 9, that is, the pair of inner frames 8. One end of this main wire 14 penetrates the side frame 6 (see FIG. 1) and is connected to the actuator 11. More specifically, one end of the main wire 14 is fixed to the tip of the take-up pulley 30 via the via pulley 12, thereby serving as a fixed end.

[0038] On one hand, as shown in FIGS. 1 and 2, the other end of the main wire 14 is guided by the wire guiding unit 10 and is drawn out of the main frame 5 through the wire passing hole 7. More specifically, the other end of the main wire 14 passes through the inside of the pipe member 19 (see FIG. 3), extends from the long hole 24 to the outside of the pipe member 19, and passes through the groove portion 25 of the fixed pulley 20, so that the extending direction thereof is changed from the horizontal direction to the vertical direction. And, the main wire 14 thus guided by the wire guiding unit 10 is allowed to move in the axial direction of the pipe member 19 by the opening width in the longitudinal direction of the long hole 24, and is allowed to move in the circumferential direction of the pipe member 19 by the amount that the entire wire guiding unit 10 can swing. Therefore, the user can change the direction in which the traction force acts within the range allowed for movement of the main wire 14. And, the other end of the main wire 14 drawn out of the main frame 5 is connected to the end transmission mechanism 13 and is thus a free end. Note that the material, length, etc. of the main wire 14 are not limited to this embodiment and can be arbitrarily changed.

[0039] The intermediate transmission mechanism 15 for the free end corresponds to the traction force transmission mechanism according to the present invention and serves to transmit the traction force of the user to the intermediate portion in the longitudinal direction of the main wire 14. As shown in FIGS. 1 and 2, this intermediate transmission mechanism 15 for the free end has a movable pulley unit 36, an acting portion 37, and a sub-wire 38.

[0040] The movable pulley unit 36 serves to transmit the tension of the main wire 14 to the sub-wire 38 or to transmit the tension of the sub-wire 38 to the main wire 14. FIG. 4 is an exploded perspective view showing the movable pulley unit 36 in an exploded state. The movable pulley unit 36 has a casing 39, a first movable pulley 40, and a second movable pulley 41.

[0041] The casing 39 rotatably supports the first movable pulley 40 and the second movable pulley 41 and serves to connect the two. As shown in FIG. 4, this casing 39 has a first casing 42 and a second casing 43. The first casing 42 is a flat plate-shaped member made of resin or the like and having a substantially rectangular shape in plan view, and has a pair of left and right cylindrical shaft portions 44 protruding from one of its surfaces. The second casing 43 is a flat plate-shaped member made of resin or the like and having a substantially rectangular shape in plan view, and has a pair of left and right cylindrical shaft portions 45 protruding from one of its surfaces. The distance between these left and right cylindrical shaft portions 45 is set to be substantially equal to the distance between the left and right cylindrical shaft portions 44. Further, the inner diameter and length of the cylindrical shaft portion 45 are each set to a size that allows the cylindrical shaft portion 44 to be inserted. Also, the lateral widths (widths in the short side direction) of the first casing 42 and the second casing 43 are each set to a size that can be accommodated in the movable pulley guide portion 9, preferably slightly smaller than the clearance width of the movable pulley guide portion 9. Note that the material, shape, and configuration of the casing 39 can be arbitrarily changed within the range that can fulfill the above-described roles. For example, although not shown in detail in the drawings, when the movable pulley guide portion 9 is configured as a rail instead of a gap or a groove, the casing 39 can also be configured as a slider that can be fitted to and move along the rail.

[0042] The first movable pulley 40 serves to change the direction in which the main wire 14 extends. This first movable pulley 40 is a cylindrical member made of resin or the like. This first movable pulley 40 has a concave groove portion 46 formed on its peripheral surface and a shaft portion insertion hole 47 formed so as to penetrate the central portion in the axial direction. The inner diameter of the shaft portion insertion hole 47 is set to a size that allows the cylindrical shaft portion 45 of the second casing 43 to be inserted therethrough.

[0043] The second movable pulley 41 serves to change the extending direction of the sub-wire 38. This second movable pulley 41 is a cylindrical member made of resin or the like. This second movable pulley 41 has a concave groove portion 48 formed on its circumferential surface and a shaft portion insertion hole 49 formed by penetrating through its central portion in the axial direction. The inner diameter of the shaft portion insertion hole 49 is set to a size that allows the cylindrical shaft portion 45 of the second casing 43 to be inserted therethrough.

[0044] As shown in FIG. 4, in the movable pulley unit 36 configured as described above, one of the cylindrical shaft portions 45 of the second casing 43 is inserted into the shaft portion insertion hole 47 of the first movable pulley 40, and the other of the cylindrical shaft portions 45 of the second casing 43 is inserted into the shaft portion insertion hole 49 of the second movable pulley 41. Thereby, the first movable pulley 40 and the second movable pulley 41 are respectively arranged at a predetermined interval on one surface of the second casing 43. In that state, the pair of cylindrical shaft portions 44 of the first casing 42 are respectively inserted into and fixed to the pair of cylindrical shaft portions 45 of the second casing 43. Thereby, the first movable pulley 40 and the second movable pulley 41 are respectively rotatably supported by the casing 39 and are connected to each other by the casing 39. The movable pulley unit 36 integrated in this way is housed in the movable pulley guide portion 9 as shown in FIG. 2. Thereby, the movable pulley unit 36 can reciprocate in the longitudinal direction of the main frame 5 by being guided by the movable pulley guide portion 9. And although not shown in detail in the figure, the longitudinal intermediate portion of the main wire 14 is wound around the groove portion 46 of the first movable pulley 40 (see FIG. 4) constituting the movable pulley unit 36.

[0045] The acting portion 37 serves to apply the traction force of the user to the sub-wire 38. Here, FIG. 5 is a schematic perspective view showing a state in which the main frame 5 is removed with respect to the other end side in the longitudinal direction of the main frame 5. In FIG. 5, for convenience of explanation, one of the pair of inner frames 8 is shown by a broken line. The acting portion 37 is configured as a ring-shaped handle made of resin or the like. The user can apply a traction force to one end portion of the sub-wire 38 by gripping and pulling the acting portion 37 by hand, or by hooking a foot on the acting portion 37 and pulling.

[0046] The sub-wire 38 serves to transmit the pulling force of the user or the driving force of the actuator 11. This sub-wire 38 is a so-called resin wire, which is a linear member made of polyethylene or the like. As shown in FIG. 5, this sub-wire 38 is accommodated in the gap between the moving pulley guide portion 9, that is, the pair of inner frames 8. Although not shown in detail in the figure, the middle portion in the longitudinal direction of the sub-wire 38 is wound around the groove portion 48 of the second moving pulley 41 that constitutes the moving pulley unit 36 (see FIG. 4). Further, as shown in FIG. 1, one end of the sub-wire 38 is guided by the wire guide unit 10 and is drawn out to the outside of the main frame 5 through the wire passing hole 7. More specifically, one end of the sub-wire 38 passes through the inside of the pipe member 19 (see FIG. 3), extends from the long hole 24 to the outside of the pipe member 19, and passes through the groove portion 25 of the fixed pulley 20, so that the extending direction thereof is changed from the horizontal direction to the vertical direction. And, the sub-wire 38 guided by the wire guide unit 10 in this way is allowed to move in the axial direction of the pipe member 19 by the opening width in the longitudinal direction of the long hole 24, and is allowed to move in the circumferential direction of the pipe member 19 by the amount that the entire wire guide unit 10 can swing. Therefore, the user can change the direction in which the pulling force is applied within the range allowed for the movement of the sub-wire 38. And, as shown in FIG. 5, one end of the sub-wire 38 drawn out to the outside of the main frame 5 is connected to the acting portion 37 and is made into a free end. On the other hand, the other end of the sub-wire 38 is connected to a tension sensor 16 described later and is made into a fixed end. Note that the material, length, etc. of the sub-wire 38 are not limited to this embodiment and can be arbitrarily changed.

[0047] The tension sensor 16 serves to detect the tension of the sub-wire 38 and thus the tension of the main wire 14 equal thereto. This tension sensor 16 is a load cell capable of detecting tension by a conventionally known method such as a piezoelectric type, a strain gauge type, a magnetostrictive type, a capacitance type, a gyro type, etc. As shown in FIG. 5, this tension sensor 16 is disposed adjacent to the wire guide unit 10 at the end of the side frame 6 on the opposite side in the movable pulley guide portion 9 and is fixed to the main frame 5. And the other end of the sub-wire 38 is connected to this tension sensor 16. Note that the installation position of the tension sensor 16 is not limited to this embodiment and can be arbitrarily changed within the range where the tension of the sub-wire 38 can be detected. Also, the tension of the main wire 14 may be detected by the tension sensor 16.

[0048] The main control device 17 serves to control the operation of each part of the load type training device 1. As shown in FIG. 2, this main control device 17 is fixedly provided on the motor main body portion 32. And although not shown in detail in the figure, the main control device 17 receives the detection result of the tension sensor 16 and outputs a signal for controlling the operation of the motor driver 31 etc. based thereon. Note that the installation position of the main control device 17 is not limited to this embodiment and can be appropriately designed and changed.

[0049] (Moving wheels) The moving wheels 4 serve to move the load training device 1 to an arbitrary use position. As shown in FIG. 1, a predetermined number of these moving wheels 4 are rotatably supported at the bottom of the side frame 6. When the main frame 5 and the side frame 6 are installed on the horizontal floor surface F as shown in FIG. 1 during the use of the load training device 1, these moving wheels 4 do not contact the floor surface F, enabling the stable installation of the load training device 1. On the other hand, although not shown in detail in the figure, when the end of the main frame 5 on the side opposite to the side frame 6 is lifted upward during the movement of the load training device 1, these moving wheels 4 contact the floor surface F and rotate, enabling the smooth movement of the load training device 1. Note that the number and arrangement position of the moving wheels 4 are not limited to this embodiment and can be appropriately changed in design.

[0050] (Operational Effects of the First Embodiment) Next, the operational effects of the load training device 1 according to the first embodiment of the present invention will be described. In the load training device 1 according to this embodiment, in the initial state where neither the main wire 14 nor the sub-wire 38 is receiving the pulling force from the user, one end of the main wire 14 is wound over the entire axial length of the winding pulley 30, and the movable pulley unit 36 is located at the initial position in the movable pulley guide portion 9, that is, at the end on the side frame 6 side. At this time, most of the main wire 14 and the sub-wire 38 are in a state of being drawn into the main frame 5.

[0051] In this initial state, when the user grips the handle as the end transmission mechanism 13 with one hand and applies a pulling force to the other end of the main wire 14, the winding pulley 30 rotates in the reverse direction to pay out one end of the main wire 14. As a result, the user can pull out the other end of the main wire 14 guided by the wire guiding unit 10 to the outside of the main frame 5. At this time, the movable pulley unit 36 remains in the initial position. And at this time, the motor driver 31 rotationally drives the motor 27, and the winding pulley 30 rotates forward through the driving gear 28 and the driven gear 29, so that a load opposite to the pulling force by the user is applied to one end of the main wire 14. The user can train the muscles of one arm by pulling the other end of the main wire 14 against this load. Also, when the user relaxes the pulling force on the other end of the main wire 14, one end of the main wire 14 is wound around the winding pulley 30 by the applied load. Along with this, the other end of the main wire 14 is drawn into the main frame 5.

[0052] On one hand, in the initial state, when the user grips the handle as the intermediate part transmission mechanism 15 for the free end with the other hand and applies a pulling force to one end of the sub-wire 38, this pulling force is transmitted to the main wire 14 via the movable pulley unit 36. Then, the winding pulley 30 rotates in the reverse direction to pay out one end of the main wire 14, and thus the movable pulley unit 36 moves in a direction away from the side frame 6 along the movable pulley guide portion 9. Along with this, the user can pull out one end of the sub-wire 38 guided by the wire guide unit 10 to the outside of the main frame 5. At this time, the tension sensor 16 connected to the other end of the sub-wire 38 detects the magnitude of the tension of the sub-wire 38 and outputs the detection result to the main control device 17. The main control device 17 controls the operation of the motor driver 31 based on the detection result, and the motor driver 31 rotationally drives the motor 27. Then, the winding pulley 30 rotates in the forward direction to wind up the main wire 14, and a load in the direction opposite to the pulling force by the user is applied to the main wire 14 and also to the sub-wire 38 via the movable pulley unit 36. The user can train the muscles of the other arm by pulling one end of the sub-wire 38 against this load. Also, when the user relaxes the pulling force on one end of the sub-wire 38, one end of the main wire 14 is wound up by the winding pulley 30 by the applied load, and the movable pulley unit 36 moves in a direction approaching the side frame 6 along the movable pulley guide portion 9. Along with this, one end of the sub-wire 38 is drawn into the inside of the main frame 5.

[0053] As described above, the load type training device 1 according to the present embodiment transmits the traction force of the user to the main wire 14 by two traction force transmission mechanisms, i.e., the end transmission mechanism 13 and the intermediate transmission mechanism 15 for the free end. On the other hand, one actuator 11 provided at one end of the main wire 14 applies loads to the end transmission mechanism 13 via the main wire 14 and to the intermediate transmission mechanism 15 for the free end via the sub-wire 38, respectively. Therefore, compared with the case where the actuator 11 that applies a load to the end transmission mechanism 13 and the actuator 11 that applies a load to the intermediate transmission mechanism 15 for the free end are provided separately and independently, the load type training device 1 according to the present embodiment has the advantage that the number of actuators 11 is small, so that the configuration can be simplified, the entire device can be reduced in size and weight, and the manufacturing cost can be reduced.

[0054] Further, in the load type training device 1 according to the present embodiment, the movable pulley unit 36, the main wire 14 and the sub-wire 38 wound around it are housed inside the movable pulley guide portion 9. Preferably, the lateral width of the movable pulley unit 36 is set to be slightly smaller than the gap width of the movable pulley guide portion 9. Therefore, even when the tension of the main wire 14 or the sub-wire 38 is loosened, the position of the movable pulley unit 36 is held to some extent by the movable pulley guide portion 9, so that the main wire 14 and the sub-wire 38 are less likely to drop off from the movable pulley unit 36.

[0055] Further, in the load type training device 1 according to the present embodiment, the winding pulley 30 constituting the actuator 11 is formed in a tapered shape, that is, the outer diameter of the pulley main body portion 35 gradually decreases from the base end side to the tip end side. Therefore, as the winding pulley 30 rotates, the main wire 14 fixed to the tip end portion thereof is uniformly wound from the tip end portion to the base end portion of the pulley main body portion 35. As a result, when the main wire 14 is wound or paid out, there is an advantage that problems such as entanglement are less likely to occur in the main wire 14.

[0056] (Modification of the First Embodiment) Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention defined by the claims. For example, as the first embodiment of the present invention, the following modification examples can be considered.

[0057] In this embodiment, by applying a load to only one actuator 11 with respect to two traction transmission mechanisms, simplification of the structure and the like are achieved. However, the number of actuators 11 only needs to be less than the number of traction transmission mechanisms, and it is not limited to this embodiment and can be appropriately changed according to the number of traction transmission mechanisms. That is, for N traction transmission mechanisms, it is sufficient to apply a load by (N - 1) or fewer actuators 11.

[0058] In this embodiment, resin wires made of polyethylene or the like are used as the main wire 14 and the sub-wire 38 according to the present invention. However, the main wire 14 and the sub-wire 38 according to the present invention mean long members capable of transmitting the driving force of the actuator 11 and the traction force of the user, and are not limited to resin wires, and include concepts such as strings, ropes, cords, cables, belts, chains, and the like.

[0059] In this embodiment, the end transmission mechanism 13, which is one of the traction transmission mechanisms according to the present invention, is configured as a ring-shaped handle made of resin or the like. However, the end transmission mechanism 13 is not limited to this embodiment in terms of its material and shape as long as the user can apply a traction force to the other end of the main wire 14, and can be appropriately designed and changed. For example, it can be changed to a bar shape instead of a ring shape.

[0060] In this embodiment, the intermediate transmission mechanism 15 for the free end, which is one of the traction transmission mechanisms according to the present invention, is composed of a movable pulley unit 36, a sub-wire 38, and an acting part 37, and the acting part 37 is configured as a ring-shaped handle made of resin or the like. However, as long as the user can apply a traction force to one end of the sub-wire 38, the material and shape of the acting part 37 are not limited to this embodiment and can be appropriately designed and changed. For example, it can be changed to a bar shape instead of a ring shape. Also, the overall configuration of the intermediate transmission mechanism 15 for the free end is not limited to this embodiment and can be appropriately designed and changed as long as the user can apply a traction force to the intermediate part of the main wire 14.

[0061] In this embodiment, the first movable pulley and the second movable pulley according to the present invention are respectively configured as a first movable pulley 40 and a second movable pulley 41 that are rotatably supported by winding the main wire 14 and the sub-wire 38 around their circumferential surfaces. However, the first movable pulley and the second movable pulley according to the present invention only need to be members that can cause slippage between the main wire 14 and the sub-wire 38, and are not limited to the pulley form as in this embodiment. For example, although not shown in detail in the figure, the first movable pulley and the second movable pulley can be respectively configured in the form of pins supported non-rotatably, and the main wire 14 and the sub-wire 38 can be wound around them and slid.

[0062] In this embodiment, the actuator 11 according to the present invention is composed of a motor 27 that converts electric energy into power. However, as long as the actuator 11 can apply a load to one end of the main wire 14, it can be configured by a driving device that generates power in any conventionally known manner, such as a hydraulic type, a pneumatic type, an electromagnetic type, or a piezoelectric element type.

[0063] (Configuration of the load type training device according to the second embodiment) Next, the configuration of the load type training device according to the second embodiment of the present invention will be described. FIGS. 6 to 9 are diagrams showing the configuration of the load type training device 50 according to the second embodiment of the present invention, and FIG. 6 is a schematic perspective view showing its appearance. The load type training device 50 includes a frame 2, a training mechanism 51, and moving wheels 4. Note that the frame 2 and the moving wheels 4 constituting the load type training device 50 of the present embodiment have the same configuration as those of the first embodiment, so the same reference numerals as those of the first embodiment are used and the description thereof is omitted here. Hereinafter, the training mechanism 51, which has a different configuration from that of the first embodiment, will be described.

[0064] (Training mechanism) The training mechanism 51 is used to apply a load to the user's body for training. Here, FIG. 7 is a schematic perspective view showing the load type training device 50 with the frame 2 removed. The training mechanism 51 includes a wire storage portion 63, a first wire guide unit 52, a second wire guide unit 53, an actuator 11, a via pulley 12, two fixed-end intermediate transmission mechanisms 54, a main wire 55, and a main control device 17. Here, the actuator 11, the via pulley 12, and the main control device 17 of the present embodiment have the same configuration as those of the first embodiment, so the same reference numerals as those of the first embodiment are used and the description thereof is omitted here. For the sake of convenience of explanation, in FIG. 7, the illustration of the longitudinal intermediate portion of the inner frame 8 and the main wire 55 is omitted, and one of the pair of inner frames 8 is shown by a broken line.

[0065] The wire storage portion 63 serves to store the main wire 55 inside. As shown in FIG. 7, this wire storage portion 63 is constituted by a gap with a predetermined width provided between a pair of inner frames 8, and is provided so as to extend over the entire length in the longitudinal direction of the main frame 5 (see FIG. 6). Although not shown in detail in the figure, instead of the present embodiment, for example, by forming a groove on the surface of the frame 2, it is also possible to constitute the wire storage portion 63.

[0066] The first wire guiding unit 52 serves to guide the middle part of the main wire 55 in a direction in which it can be drawn out from the wire passing hole 7. FIG. 8 is an exploded perspective view showing the first wire guiding unit 52 in an exploded state. Since the first wire guiding unit 52 has basically the same configuration as the wire guiding unit 10 of the first embodiment, the same reference numerals as those in FIG. 3 are given, and the description thereof is omitted here. However, the first wire guiding unit 52 is different from the wire guiding unit 10 of the first embodiment in that it has a wire connection piece 56 protruding outward from one side surface of its support member 18. The first wire guiding unit 52 configured as such is arranged at a position corresponding to the wire passing hole 7 on one end side in the longitudinal direction of the main frame 5 (the side of the side frame 6) inside the wire housing portion 63 as shown in FIGS. 6 and 7. Note that the entire first wire guiding unit 52 can also swing around the pipe member 19 in the same manner as the wire guiding unit 10 of the first embodiment.

[0067] The second wire guiding unit 53 also serves to guide the middle part of the main wire 55 in a direction in which it can be drawn out from the wire passing hole 7. FIG. 9 is an exploded perspective view showing the second wire guiding unit 53 in an exploded state. The second wire guiding unit 53 includes a support member 57, a pipe member 19, two fixed pulleys 20, and a shaft member 58. Among these, since the pipe member 19 and the two fixed pulleys 20 have the same configuration as the wire guiding unit 10 of the first embodiment, the same reference numerals as those in FIG. 3 are given, and the description thereof is omitted here.

[0068] The support member 57 serves to support the shaft member 58 at both ends. As shown in Fig. 9, this support member 57 is a box-shaped member made of metal or the like with an open upper surface and front surface. This support member 57 has a pipe insertion hole 59 formed through its front surface and a pair of shaft insertion holes 60 formed through its left and right side surfaces respectively. The support member 57 of the present embodiment is set such that the separation distance between the left and right side surfaces is longer than that of the support member 18 (see Fig. 3) of the first embodiment, specifically, long enough to accommodate two fixed pulleys 20 inside the support member 57. And the pipe insertion hole 59 is formed at a position on one side surface from the center on the front surface.

[0069] As shown in Fig. 9, the two fixed pulleys 20 are both accommodated inside the support member 57 and are arranged adjacent to each other in the axial direction and such that the positions of the shaft insertion holes 26 coincide with the positions of the shaft insertion holes 60 of the support member 57.

[0070] The shaft member 58 serves as the rotation shaft of the two fixed pulleys 20. As shown in Fig. 9, this shaft member 58 is a cylindrical member made of metal or the like. The length of this shaft member 58 is set to be substantially equal to the separation distance between the left and right side surfaces of the support member 57. The shaft member 58 configured in this way is inserted through the shaft insertion holes 26 of the two fixed pulleys 20 respectively, and both axial ends thereof are inserted into the shaft insertion holes 60 of the support member 57 and fixed by welding or the like. Thereby, the shaft member 58 is provided so as to be bridged between the left and right side surfaces of the support member 57 while rotatably supporting the two fixed pulleys 20.

[0071] The second wire guide unit 53 configured in this way is arranged inside the wire accommodating portion 63 at a position corresponding to the wire passing hole 7 on the other end side in the longitudinal direction of the main frame 5 (the side opposite to the side frame 6) as shown in Figs. 6 and 7. Note that the second wire guide unit 53 is also swingable around the pipe member 19 as a whole, similar to the wire guide unit 10 of the first embodiment.

[0072] (Intermediate transmission mechanism for fixed end) The two intermediate transmission mechanisms 54 for the fixed ends correspond to the traction transmission mechanism according to the present invention and serve to transmit the traction force of the user to the longitudinal intermediate portion of the main wire 55. As shown in FIG. 7, these intermediate transmission mechanisms 54 for the fixed ends each have a ring-shaped acting portion 61 made of resin or the like, and a pulley portion 62 (the third moving pulley according to the present invention) rotatably supported by the acting portion 61. The acting portion 61 is used for the user to grip by hand or hook with the foot to perform traction. The pulley portion 62 serves to change the extending direction of the main wire 55 and reduce the frictional force by sliding with the main wire 55. Note that the material and shape of the acting portion 61 are not limited to the present embodiment and can be appropriately changed in design.

[0073] The main wire 55 has the same role and material as the main wire 14 in the first embodiment, but its length is longer than that of the main wire 14 in the first embodiment. As shown in FIG. 7, this main wire 55 is housed in a wire housing portion 63, and one end thereof penetrates the side frame 6 and is connected to the actuator 11.

[0074] Also, the portion of the intermediate part of the main wire 55 close to the central part is guided by the second wire guide unit 53 as shown in FIGS. 6 and 7, drawn out of the main frame 5 through the wire passing hole 7, passed through the intermediate part transmission mechanism 54 for the fixed end, and then guided by the second wire guide unit 53 again, and drawn into the main frame 5 through the wire passing hole 7. More specifically, the intermediate part of the main wire 55 passes through the inside of the pipe member 19 of the second wire guide unit 53 (see FIG. 9), extends from the long hole 24 to the outside of the pipe member 19, and passes through the groove part 48 of one of the two fixed pulleys 20, so that the extending direction thereof is changed from the horizontal direction to the vertical direction. Then, the intermediate part of the main wire 55 drawn out of the main frame 5 is wound around the pulley part 62 of the intermediate part transmission mechanism 54 for the fixed end, so that the extending direction thereof is changed from the upward direction to the downward direction. Further, the intermediate part of the main wire 55 passes through the groove part 48 of the other of the two fixed pulleys 20 of the second wire guide unit 53 (see FIG. 9), is drawn into the main frame 5, and the extending direction thereof is changed from the vertical direction to the horizontal direction. It should be noted that the point that the intermediate part of the main wire 55 guided by the second wire guide unit 53 in this way is allowed to move slightly in the axial direction and the circumferential direction of the pipe member 19 is the same as that in the first embodiment.

[0075] Also, a portion of the middle part of the main wire 55 close to the other end is guided by the first wire guiding unit 52 as shown in FIGS. 6 and 7, drawn out of the main frame 5 through the wire passing hole 7, passed through the intermediate part transmission mechanism 54 for the fixed end, and then guided by the first wire guiding unit 52 again to be drawn into the main frame 5 through the wire passing hole 7. More specifically, the middle part of the main wire 55 passes through the inside of the pipe member 19 of the first wire guiding unit 52 (see FIG. 8), extends from the long hole 24 to the outside of the pipe member 19, and passes through the groove part 48 of the fixed pulley 20, so that the extending direction thereof is changed from the horizontal direction to the vertical direction. Then, the middle part of the main wire 55 drawn out of the main frame 5 is wound around the pulley part 62 of the intermediate part transmission mechanism 54 for the fixed end, so that the extending direction thereof is changed from upward to downward. And the other end of the main wire 55 extends into the main frame 5 through the wire passing hole 7 and is connected to the wire connection piece 56 of the first wire guiding unit 52 (see FIG. 8) to be set as the fixed end.

[0076] (Operational effects of the second embodiment) Next, the operational effects of the load type training device 50 according to the second embodiment of the present invention will be described. In the load type training device 50 according to the present embodiment, in the initial state where the main wire 55 is not receiving the pulling force from the user, one end of the main wire 55 is wound over the entire axial length of the winding pulley 30. At this time, most of the middle part of the main wire 55 is in a state of being drawn into the main frame 5.

[0077] In this initial state, when the user grips the operating portion 61 of the intermediate portion transmission mechanism 54 for the fixed end with one hand and applies a pulling force to the intermediate portion of the main wire 55, the winding pulley 30 rotates in the reverse direction to pay out one end portion of the main wire 55. As a result, the user can pull out the intermediate portion of the main wire 55 guided by the first wire guide unit 52 or the second wire guide unit 53 to the outside of the main frame 5. At this time, the motor driver 31 rotationally drives the motor 27, and the winding pulley 30 rotates forward via the drive gear 28 and the driven gear 29, so that a load in the direction opposite to the pulling force by the user is applied to one end portion of the main wire 55. The user can train the arm muscles by pulling the intermediate portion of the main wire 55 against this load. Further, when the user relaxes the pulling force on the intermediate portion of the main wire 55, one end portion of the main wire 55 is wound around the winding pulley 30 by the applied load. Along with this, the intermediate portion of the main wire 55 is guided by the first wire guide unit 52 and the second wire guide unit 53 and drawn into the main frame 5.

[0078] As described above, in the load type training device 50 according to the present embodiment, the pulling force of the user is transmitted to the main wire 55 by the two intermediate portion transmission mechanisms 54 for the fixed end, which are traction transmission mechanisms. On the other hand, one actuator 11 provided at one end portion of the main wire 55 applies a load to each of the two intermediate portion transmission mechanisms 54 for the fixed end. Therefore, compared with the case where the actuator 11 that applies a load to one intermediate portion transmission mechanism 54 for the fixed end and the actuator 11 that applies a load to the other intermediate portion transmission mechanism 54 for the fixed end are provided separately and independently, the load type training device 50 according to the present embodiment has an advantage that the number of actuators 11 is small, so that the configuration can be simplified, the entire device can be reduced in size and weight, and the manufacturing cost can be reduced.

[0079] (Modification of the Second Embodiment) In this embodiment, two intermediate transmission mechanisms 54 for fixed ends, which are traction transmission mechanisms according to the present invention, are each constituted by a ring-shaped acting portion 61 and a pulley portion 62 rotatably supported by the acting portion 61. However, as long as a user can apply a traction force to the intermediate portion of the main wire 55, the material, shape, and constituent members of the intermediate transmission mechanism 54 for fixed ends are not limited to those of this embodiment, and can be appropriately changed in design.

[0080] In addition, it is also possible to apply the modified example of the first embodiment described above as a modified example of the second embodiment.

Industrial Applicability

[0081] The usage mode of the load type training device according to the present invention is not limited to a mode in which the frame is placed on the floor surface and the user rides on it for training. For example, a mode in which the frame is fixed to the wall surface and the user stands beside it for training can also be adopted.

Explanation of Signs

[0082] 1 Load type training device 9 Movable pulley guide portion 11 Actuator 13 End transmission mechanism (traction transmission mechanism) 14 Main wire 15 Intermediate transmission mechanism for free end (traction transmission mechanism) 27 Motor 30 Take-up pulley 36 Movable pulley unit 37 Acting portion 38 Sub wire 40 First movable pulley 41 Second movable pulley 50 Load type training device 54 Intermediate transmission mechanism for fixed end (traction transmission mechanism) 55 Main wire 61 Acting portion 62 Pulley portion (third movable pulley)

Claims

1. A load type training device for applying a load to train a user's body, a main wire, a traction force transmission mechanism provided at a plurality of locations on the main wire and capable of transmitting the user's traction force to the main wire, and an actuator capable of applying a load to one end of the main wire against the traction force of the user, wherein the number of the actuators is less than the number of the traction force transmission mechanisms.

2. The other end of the main wire is a free end, and the traction force transmission mechanism includes an end transmission mechanism provided at the other end of the main wire, and an intermediate transmission mechanism for the free end provided at an intermediate portion of the main wire, The load type training device according to claim 1, characterized by having the above.

3. The intermediate transmission mechanism for the free end includes a movable pulley unit including a first movable pulley around which an intermediate portion of the main wire is wound and a second movable pulley connected to the first movable pulley, a sub-wire around which an intermediate portion is wound around the second movable pulley, one end of which is a free end and the other end of which is a fixed end, and an acting portion provided at one end of the sub-wire for the user to apply a traction force, The load type training device according to claim 2, characterized by having the above.

4. a frame for accommodating the main wire and the sub-wire therein and provided so that the other end of the main wire and the other end of the sub-wire can be respectively drawn out to the outside, a movable pulley guide portion provided on the frame so as to extend from the other end side of the main wire toward the other end side of the sub-wire for guiding the movement of the movable pulley unit, The load training device according to claim 3, further comprising

5. The load training device according to claim 4, wherein the movable pulley guide portion is provided as a gap capable of accommodating the movable pulley unit therein.

6. The other end of the main wire is a fixed end, The load training device according to claim 1, wherein the traction force transmission mechanism includes a plurality of intermediate transmission mechanisms for fixed ends provided at an intermediate portion of the main wire.

7. Each of the plurality of intermediate transmission mechanisms for fixed ends a third movable pulley around which an intermediate portion of the main wire is wound, an acting portion connected to the third movable pulley and through which a user applies a traction force, The load training device according to claim 6, characterized by comprising

8. The actuator a pulley capable of winding one end of the main wire, a motor for rotationally driving the pulley, The load training device according to any one of claims 1 to 7, characterized by comprising

9. The motor drives one axial end of the rotation axis of the pulley, and the pulley is formed such that its outer diameter decreases from one axial end side of the rotation axis toward the other axial end side. The load training device according to claim 8.

10. The load training device according to any one of claims 1 to 7, wherein the number of the traction force transmission mechanisms is two and the number of the actuators is one.

Images