TW202417088A - Load transfer mechanism for training equipment and training equipment using the load transfer mechanism - Google Patents

Abstract

The present invention provides a load transmission mechanism for a training device and a training device using the load transmission mechanism, which can train muscles with greater flexibility and elasticity. The load transmission mechanism for a training device comprises: an input portion connected to an end portion and a driving shaft portion that rotates together with the input portion, a rotating intermediate shaft portion that rotates in conjunction with the rotation of the driving shaft portion, a first rotation transmission portion, a second rotation transmission portion, an inner housing, an outer housing, a sliding shaft portion disposed on the outer housing and applied with an external force in a straight line direction, and a relative rotation transmission portion. The first central axis orthogonal to the axial direction of the sliding shaft portion rotates, and the connecting joint portion; and the connecting joint portion converts the rotation and axial movement of the crankshaft portion into the displacement of the sliding shaft portion in the up and down direction. When the user moves the active shaft portion horizontally through the grip portion or the footrest portion, the external force applied to the sliding shaft portion is transmitted to the grip portion or the footrest portion through the active shaft portion.

Description

Load transfer mechanism for training equipment and training equipment using the load transfer mechanism

The present invention relates to a load transfer mechanism for a training device and a training device using the load transfer mechanism.

When training shoulders, arms, back, legs, etc., there are various training devices for users to use. For example, [Patent Document 1] Japanese Patent Publication No. 2006-187317 discloses a training device that can perform double-arm exercises.

According to the training device described in Patent Document 1, it is not accompanied by muscle hardening, muscle pain, fatigue, etc., which puts less burden on the body, and can obtain soft and elastic muscles such as shoulders, arms, and back. The training device of Patent Document 1 is provided with a load transmission mechanism between a metal wire extending from a counterweight (hammer) on the side of the training device and a grip held by a user, and the load transmission mechanism has a rotating shaft and gears called a lifting and swinging member. Compared with a training device that simply connects a weight to a grip of a user through a metal wire, the training device of Patent Document 1 can apply a load by providing a lifting and swinging member (load transmission mechanism), and the load is generated by the twisting movement of the arm that the user wants to exercise. Therefore, not only the muscles in a monotonous direction are exercised, but also the muscles around the arm bones are more moved by the twisting movement accompanied by the load, and the muscle strength with flexibility and elasticity can be acquired.

The inventor has repeatedly conducted in-depth research on the lifting and swinging member (load transfer mechanism) of the training device of Patent Document 1. In addition, the inventor has made improvements so that the load acts on the axis of the lifting and swinging member (load transfer mechanism) from more directions, and the lifting and swinging member is connected to a gripping portion held by the user. For example, the load can act not only in the stretching direction and the torsion direction, but also in the pressing direction. Furthermore, the inventor has improved the lifting and swinging member (load transfer mechanism) so that it can explain not only the movements of the user's arms but also the legs.

The present invention is made in view of the above-mentioned points, and provides a load transfer mechanism for a training device and a training device using the load transfer mechanism, which can train muscles with greater flexibility and elasticity by applying loads to the axis constituting the load transfer mechanism from more directions.

That is, the first aspect of the load transmission mechanism for training equipment is characterized by having: an active shaft portion, which rotates together with the input portion of the user input force connected to the end; an intermediate shaft portion, which rotates in conjunction with the rotation of the active shaft portion; a first rotation transmission portion, which is suspended between the active shaft portion and the intermediate shaft portion and transmits the rotation of the active shaft portion and the intermediate shaft portion to each other; and a second rotation transmission portion. The transmission part is arranged between the intermediate shaft and the crankshaft part orthogonal to the intermediate shaft, and transmits the rotation between the intermediate shaft and the crankshaft part; the inner housing contains the driving shaft, the intermediate shaft and the crankshaft part; the outer housing contains the inner housing, and the inner housing moves in the outer housing along the axial direction of the crankshaft part; the sliding shaft allows the crankshaft part to rotate orthogonally relative to the axial direction of the crankshaft part. The connecting joint part has a central axis that is orthogonal to the axis of the sliding shaft and is allowed to rotate in a direction orthogonal to the central axis by a combination of a plurality of connecting pieces, and one of the plurality of connecting pieces is connected to the sliding shaft; and the connecting joint part is connected to the sliding shaft. In a connecting piece portion different from one of the connecting pieces of the part, the rotation of the central axis orthogonal to the axial direction of the crankshaft portion is allowed and connected to the crankshaft portion, and the rotation and axial movement of the crankshaft portion are converted into displacement of the sliding shaft portion in the up and down directions; when the user moves the aforementioned active shaft portion horizontally through the input portion, the external force applied to the sliding shaft portion is transmitted to the input portion through the active shaft portion.

The second aspect of the load transmission mechanism for training equipment is characterized in that it has: an active shaft portion that rotates together with an input portion connected to the end portion for inputting a user force; an intermediate shaft portion that rotates in conjunction with the rotation of the active shaft portion; a first rotation transmission portion that is suspended between the active shaft portion and the intermediate shaft portion and transmits the rotation of the active shaft portion and the intermediate shaft portion to each other; 2. The rotation transmission part is arranged between the intermediate shaft part and the crankshaft part orthogonal to the intermediate shaft part, and transmits the rotation between the intermediate shaft part and the crankshaft part; the connecting and fixing part connects the driving shaft part, the intermediate shaft part and the crankshaft part, and transmits the rotation between the driving shaft part, the intermediate shaft part and the crankshaft part; the sliding shaft part allows the rotation of the driving shaft part orthogonal to the axial direction of the crankshaft part. direction of displacement, and applies force in a straight direction by an external force; and a connecting joint portion, which has a rotation of a central axis orthogonal to the axial direction of the sliding shaft portion, and a rotation in a direction orthogonal to the central axis is allowed by a combination of a plurality of connecting pieces, and one of the plurality of connecting pieces is connected to the sliding shaft portion; and the connecting joint portion has a connection piece portion different from a connecting piece portion connected to the sliding shaft portion, and has a rotation of a central axis orthogonal to the axial direction of the crankshaft portion, and is connected to the crankshaft portion, so that the rotation and axial movement of the crankshaft portion are converted into displacement of the sliding shaft portion in an up and down direction; when the user moves the active shaft portion horizontally via the input portion, the external force applied to the sliding shaft portion is transmitted to the input portion via the active shaft portion.

According to a third aspect, in the load transmission mechanism for a training device of the first or second aspect, the input portion may be a grip held by a user or a footrest of the user.

A fourth aspect may be that, in the load transmission mechanism for a training device of the first or second aspect, the connecting joint portion is constructed with a plurality of universal joints connected as main components.

According to a fifth aspect, in the load transmission mechanism for a training device according to the first aspect, the outer housing has a connection portion for connecting to the training device, and the inner housing slides inside the outer housing as the active shaft moves horizontally.

In a sixth aspect, the load transmission mechanism for a training device according to the second aspect may include a connection portion for connecting to the training device.

The seventh aspect may be that in the load transmission mechanism for training equipment of the first or second aspect, the first rotation transmission part is a transmission chain, the active shaft part has an active shaft sprocket, the intermediate shaft part has an intermediate shaft sprocket, and the transmission chain is suspended between the active shaft sprocket and the intermediate shaft sprocket.

The eighth aspect may be that, in the load transmission mechanism for training equipment of the first or second aspect, the second rotation transmission portion comprises: an intermediate shaft umbrella gear disposed on the intermediate shaft portion; and a crankshaft umbrella gear disposed on the crankshaft portion and engaged with the intermediate shaft umbrella gear.

A ninth aspect may also be that, in the load transmission mechanism for a training device according to the third aspect, the gripping portion is a ring-shaped object.

According to a tenth aspect, in the load transmission mechanism for a training device according to the first or second aspect, the external force may be generated by a load applying section that freely adjusts the load size of the training device.

According to an eleventh aspect, in the load transmission mechanism for a training device of the first or second aspect, the sliding bearing supporting the sliding shaft portion may have a bearing hole for inserting the sliding shaft portion so as to be inclined with respect to the axial direction of the crankshaft portion.

The twelfth aspect may also be that in the load transfer mechanism for training equipment of the first or second aspect, the sliding bearing supporting the sliding shaft has: a first bearing hole, which is inserted orthogonally to the axial direction of the crankshaft portion; and a second bearing hole, which intersects with the first bearing hole and is inserted obliquely to the axial direction of the crankshaft portion; the sliding shaft moves between the first bearing hole and the second bearing hole along with the axial movement of the crankshaft portion.

A thirteenth aspect may be that, in the load transmission mechanism for a training device of the first or second aspect, the sliding bearing supporting the sliding shaft portion has a bearing hole in the shape of an inverted cone.

According to a 14th aspect, in the load transmission mechanism for a training device of the first or second aspect, the sliding bearing supporting the sliding shaft has a shaft neck at the center in the axial direction.

The training device of the fifteenth aspect may also include the load transmission mechanism for the training device of the first or second aspect.

The present invention can provide a load transmission mechanism for a training device and a training device using the load transmission mechanism; and the load transmission mechanism for a training device disclosed in the present invention comprises: an active shaft portion, which rotates together with an input portion connected to an end portion for inputting a user's force; an intermediate shaft portion, which rotates in conjunction with the rotation of the active shaft portion; a first rotation transmission portion, which is suspended between the active shaft portion and the intermediate shaft portion, and transmits the active shaft The first and second rotation transmission parts are provided between the middle shaft and the crankshaft part orthogonal to the middle shaft, and transmit the rotation between the middle shaft and the crankshaft part; the inner housing body accommodates the driving shaft part, the middle shaft part and the crankshaft part; the outer housing body accommodates the inner housing body, and the inner housing body moves in the outer housing body along the axial direction of the crankshaft part; the sliding shaft part allows the crankshaft part to rotate relative to the crankshaft part. The invention relates to a connecting joint part, which is configured to be displaced in a direction orthogonal to the axis and is arranged on the outer shell, and is applied in a straight direction by an external force; and a connecting joint part, which has a rotation relative to the central axis of the axis orthogonal to the axis of the sliding shaft part, and the rotation in a direction orthogonal to the central axis is allowed by a combination of a plurality of connecting pieces, and one of the plurality of connecting pieces is connected to the sliding shaft part; and the connecting joint part is connected to a connecting piece connected to the sliding shaft part. In a connecting piece portion that is different from the other portion, the rotation of a central axis that is orthogonal to the axial direction of the crankshaft portion is allowed and is connected to the crankshaft portion, thereby converting the rotation and axial movement of the crankshaft portion into displacement of the sliding shaft portion in the up and down direction. When the user moves the aforementioned active shaft portion horizontally via the input portion, the external force applied to the sliding shaft portion is transmitted to the input portion via the active shaft portion, thereby enabling the user to develop muscles with greater flexibility and elasticity.

The load transmission mechanism 1A for the training device of the first embodiment disclosed in Figs. 1 to 5 and Fig. 34, the load transmission mechanism 1B for the training device of the second embodiment disclosed in Figs. 12 to 13, the load transmission mechanism 1D for the training device of the fourth embodiment disclosed in Figs. 22 to 24, and the load transmission mechanism 1E for the training device of the fifth embodiment disclosed in Figs. 25 to 29 are connected to the first training device 100 or the second training device 201 described later. The load transmission mechanism 1C for the training device of the third embodiment disclosed in Figs. 14 to 16 is connected to the second training device 201 described later.

The load transmission mechanisms 1A, 1B, 1C, 1D and 1E for training equipment are mechanical components that have mechanisms for transmitting the loads of the weights on the sides of the first training equipment 100 and the second training equipment 201 to the users of the training equipment. The load transmission mechanisms 1A, 1B, 1D and 1E for training equipment have a gripping portion 11 (see FIG. 1 etc.) for the user to hold, and are used as training equipment for the arms and shoulders; the load transmission mechanism 1C for training equipment has a footrest portion 271 (see FIG. 14 etc.) for the user, and is used as a training equipment for the legs.

The gripping parts 11, 260 and the footrest 271 are input parts for the user to input force.

For example, the user places the backs of both arms toward the left and right of the first training device 100 in the initial state described below, and holds the gripping portion 11 as the input portion with both hands. Then, the user holds the gripping portion 11 with both hands and simultaneously lowers both arms downward, thereby inputting a downward pulling force to the gripping portion 11.

Furthermore, the user places the backs of both arms toward the left and right sides of the first training device 100 in the initial state, and holds the gripping portion 11 as the input portion with both hands. Then, the user holds the gripping portion 11 with both hands, and simultaneously opens the arms outward to perform chest expansion exercises while straightening the arms, thereby inputting force to the gripping portion 11 as the input portion, so that the load transfer mechanism 1A performs a rotational motion outward.

Furthermore, the user sits on the right side of the seat 211 of the second training apparatus 201 in the initial state described later. Then, the user raises his right arm to hold the grip 260. Then, while maintaining the grip 260 with his right hand, the user lowers his right arm forward, thereby inputting a downward pulling force to the grip 260 as an input portion.

The user sits on the right side of the seat 211 of the second training apparatus 201 described later, places the left leg on the footrest 271 as the input part of the load transmission mechanism 1C, and bends the knee. Then, the user inputs a pressing force to the footrest 271 by straightening the left leg.

＜First embodiment of load transmission mechanism 1A for training equipment＞

Referring to Figs. 1 to 5 and Fig. 34, the structure and operation of the load transfer mechanism 1A for a training device of the first embodiment are described. The load transfer mechanism 1A for a training device includes an outer housing 2 and an inner housing 3. The inner housing 3 is housed in the outer housing 2 and reciprocates in one direction inside the outer housing 2. A slide rail (not shown) is interposed between the outer housing 2 and the inner housing 3 to reduce the sliding friction generated between the outer housing 2 and the inner housing 3. The slide rail includes a roller type and a bearing type.

<Description of the structure of the load transmission mechanism 1A for the training device of the first embodiment>

The inner housing 3 includes a driving shaft 4, an intermediate shaft 5, and a crankshaft 6, and the outer housing 2 includes a sliding shaft 13. Power can be transmitted between the driving shaft 4 and the sliding shaft 13 via the shafts between the driving shaft 4 and the sliding shaft 13.

In the load transmission mechanism 1A for training equipment of the first embodiment, each of the active shaft 4, the intermediate shaft 5 and the crankshaft 6 is rotatably supported on the inner housing 3. As shown in FIG. 1 , the active shaft 4 is rotatably supported on active shaft bearings 4a and 4b mounted on the inner housing 3, and the intermediate shaft 5 is rotatably supported on intermediate shaft bearings 5a and 5b mounted on the inner housing 3.

The sliding shaft portion 13 is allowed to be displaced in a direction perpendicular to the axial direction of the crankshaft portion 6 and is disposed on the outer housing 2, and is urged in a linear direction by an external force.

The sliding shaft 13 is supported by a sliding bearing 13a provided on the outer housing 2, and is allowed to be displaced in the up-down direction in FIG. 1. In addition, the sliding bearing 13a may be supported by a line contact with the sliding shaft 13. For example, the inner peripheral surface of the sliding bearing 13a may be in a lap shape, and a part of the inner peripheral surface may be supported by a line contact with the outer peripheral surface of the sliding shaft 13. In this way, the sliding shaft 13 can reduce the sliding friction with the sliding bearing 13a, and can be displaced in the up-down direction in FIG. 1 more smoothly.

In order to connect the load transfer mechanism 1A for training equipment of the first embodiment to the first training equipment 100 described later (see Figures 6 to 11), the outer shell 2 is provided with a connecting portion 7. The connecting portion 7 of the load transfer mechanism 1A for training equipment is in the form of a cylindrical connecting cylinder 8. The guide support 140 (see Figures 6 to 11) is inserted into the connecting cylinder 8. The connecting cylinder 8 uses a component with low sliding resistance such as fluororesin. As a result, the load transfer mechanism 1A for training equipment can be smoothly raised and lowered and rotated in the first training equipment 100.

The inner housing 3 of the load transmission mechanism 1A for the training device of the first embodiment can move horizontally relative to the outer housing 2, the connection part 7 and the guide support 140. That is, the active shaft part 4 provided in the inner housing 3 can move horizontally relative to the outer housing 2, the connection part 7 and the guide support 140.

The rotation of the connecting joint portion 12 having a first center axis 12g orthogonal to the axis of the sliding shaft portion 13 and the rotation of the second center axis 12h orthogonal to the first center axis 12g are allowed by the combination of a plurality of connecting pieces 30, and one of the plurality of connecting pieces 30 (30(12e)) is connected to the sliding shaft portion 13.

The connecting piece 30 (the third joint piece 12e) of the connecting joint 12 is connected to the lower end (the first end 13b) of the sliding shaft 13. The connecting joint 12 is allowed to rotate about the first center axis 12g orthogonal to the axial direction (axial direction means the direction in which the axis extends, or the length direction of the axis. The same applies hereinafter) of the sliding shaft 13, and about the second center axis 12h orthogonal to the first center axis 12g by a combination of a plurality of connecting pieces 30, and one of the plurality of connecting pieces 30 (the first joint piece 12a, the second joint piece 12c, and the third joint piece 12e) (the third joint piece 12e) is connected to the sliding shaft 13.

The center axes including the first center axis 12g, the second center axis 12h, the third center axis 12j and the fourth center axis 12k are rotation axes passing through the rotation center of the rotation. The same applies to the following.

The connecting joint portion 12 is connected to the crankshaft portion 6 in a connecting piece portion 30 (the first joint piece 12a, the second joint piece 12c) which is different from a connecting piece portion 30 (the third joint piece 12e) connected to the sliding shaft portion 13, and has a central axis that is allowed to rotate orthogonal to the axial direction of the crankshaft portion 6, and converts the rotation and axial movement of the crankshaft portion 6 into displacement of the sliding shaft portion 13 in the up and down directions.

The connecting joint portion 12 includes a first joint piece 12a, a second joint piece 12c, and a third joint piece 12e belonging to the connecting piece portion 30. The first joint piece 12a and the second joint piece 12c are connected by a first universal joint 12b belonging to the universal joint 40. The second joint piece 12c and the third joint piece 12e are connected by a second universal joint 12d belonging to the universal joint 40.

The universal joint 40 can freely change the angle of the connection of the two rotating shafts, so that the rotational motion of one rotating shaft can be transmitted to the other rotating shaft at an angle. The universal joint 40 can be various universal shaft joints (universal joints) or a rod member called a connecting rod (connecting rod) 41 (refer to Figure 30). The universal joint 40 shown in Figure 1 (in the first universal joint 12b and the second universal joint 12d) uses a connecting rod 41. The connecting rod 41 has two through holes (the first through hole 41a and the second through hole 41b) that are orthogonal to each other. The first through hole 41a is inserted with a pin 12f as the first center axis 12g, and the second through hole 41b is inserted with a pin 12f as the third center axis 12j (refer to Figure 1).

Examples of universal joints include gyroscopic universal joints and constant velocity universal joints.

The connecting joint portion 12 is composed of three connecting pieces 30, namely the first joint piece 12a, the second joint piece 12c, the third joint piece 12e, and the universal joints 40 (the first universal joint 12b, the second universal joint 12d) connecting the adjacent connecting pieces 30. Furthermore, the connecting joint portion 12 is configured to have three connecting pieces 30, but is not limited to this, and may also have four or more connecting pieces 30. The connecting joint portion 12 has at least two universal joints 40. For example, the connecting joint portion 12 having four connecting pieces 30 has two or three universal joints 40. The first joint piece 12a is rotatably installed by the latch 12f in a manner that it straddles the side surface of the crankshaft portion 6. The latch 12f is orthogonal to the rotation axis of the crankshaft 6 and serves as the rotation axis of the first joint piece 12a. The first joint piece 12a is attached to the crankshaft 6 so that the latch 12f can swing as the rotation axis.

Since the connecting joint portion 12 has two universal joints 40 and the first joint piece 12a is movably connected to the crank portion 6, the rotation and axial movement of the crank portion 6 can be converted into the displacement of the sliding shaft portion 13 in the up and down directions.

The first universal joint 12b connects the first joint piece 12a and the second joint piece 12c using two rotating shafts intersecting at right angles, and the first joint piece 12a and the second joint piece 12c can be bent at a predetermined angle in two directions orthogonal to the first universal joint 12b as a base point.

The second universal joint 12d connects the second joint piece 12c and the third joint piece 12e using two rotating shafts intersecting at right angles, and the second joint piece 12c and the third joint piece 12e can be bent at a predetermined angle in two directions orthogonal to the second universal joint 12d as a base point.

Since the first joint piece 12a has a fourth center axis 12k (latch pin 12f) at one end thereof which is orthogonal to the axial direction of the crankshaft portion 6 and is connected to the crankshaft portion 6 so as to be allowed to rotate, the first joint piece 12a rotates along the axial direction of the crankshaft portion 6. Furthermore, since the first joint piece 12a is connected to the second joint piece 12c at the other end thereof via the first universal joint 12b, the first joint piece 12a can be bent in two directions orthogonal to the second joint piece 12c.

Since the second joint piece 12c is connected to the third joint piece 12e via the second universal joint 12d at the end on the opposite side to the end connected to the first joint piece 12a, the second joint piece 12c can be bent in two directions orthogonal to the third joint piece 12e.

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

The active shaft 4 is connected to a grip 11 held by the user at the lower end. The grip 11 is an input portion for the user to input force. Moreover, the movements of the user's hands and arms are transmitted to the active shaft 4 via the grip 11, and the active shaft 4 body also rotates and moves horizontally. As can be seen from the first training device 100 described later, the grip 11 connected to the active shaft 4 is a ring-shaped object, especially a rectangular ring because it is held by the fingers. As shown in Figures 6 to 11, the grip 11 is rectangular (quadrilateral) in a plan view, forming a continuously connected ring.

The intermediate shaft 5 rotates in conjunction with the rotation of the active shaft 4. A first rotation transmission unit 1K is provided, which is suspended between the active shaft 4 and the intermediate shaft 5 and transmits the rotation of the active shaft 4 and the intermediate shaft 5. The rotation of the active shaft 4 is transmitted to the intermediate shaft 5 through the first rotation transmission unit 1K. In addition, the force for the intermediate shaft 5 to rotate due to the external force acting on the sliding shaft 13 is transmitted to the active shaft 4 through the first rotation transmission unit 1K. The active shaft 4 and the intermediate shaft 5 are arranged parallel to each other.

The active shaft 4 and the intermediate shaft 5 are supported by the inner housing 3 by a freely rotatable shaft. The active shaft 4 and the intermediate shaft 5 are connected and fixed by the inner housing 3, and the horizontal movement of the active shaft 4 and the intermediate shaft 5 is transmitted to each other through the inner housing 3.

In the load transmission mechanism 1A for training equipment, the first rotating transmission part 1K is provided with a transmission chain 10 (indicated by a thick dotted line in FIGS. 1 to 5 ). The transmission chain 10 may be, for example, a roller chain, a plate chain, or the like. In order to engage with the suspension of the transmission chain 10 of the first rotating transmission part 1K, the driving shaft part 4 is provided with a driving shaft sprocket 4C, and the intermediate shaft part 5 is provided with an intermediate shaft sprocket 5C. The first rotating transmission part 1K may also adopt a combination of a belt and a pulley (not shown) instead of the transmission chain 10. Examples of belts include V-belts, flat belts, toothed belts, and the like.

As shown in FIG1 , the intermediate shaft 5 and the crankshaft 6 are orthogonal to each other, and a second rotation transmission part 1M is provided between the intermediate shaft 5 and the crankshaft 6. The second rotation transmission part 1M transmits the rotation between the intermediate shaft 5 and the crankshaft 6. The second rotation transmission part 1M plays a role of transmitting the rotation between two axes intersecting at right angles. Here, the two axes are between the intermediate shaft 5 and the crankshaft 6.

In the first embodiment, the second rotation transmission part 1M includes: an intermediate shaft umbrella gear 5d, which is provided on the intermediate shaft 5; and a crankshaft umbrella gear 6c, which is provided on the crankshaft 6 and engages with the intermediate shaft umbrella gear 5d. The rotation of the intermediate shaft 5 is linked to the crankshaft 6 at right angles. In addition, as a mechanism of the second rotation transmission part 1M that orthogonally connects the intermediate shaft 5 and the crankshaft 6, for example, a combination of a crown gear and a spur gear, a worm and a worm gear, etc. can be listed.

The sliding shaft 13 is arranged in the outer housing 2 at a position parallel to the intermediate shaft 5. The rotation of the crankshaft 6 and the horizontal movement in the axial direction are converted into an up-and-down movement on the paper through the connecting joint 12 and transmitted to the sliding shaft 13. The sliding shaft 13 is connected to the load applying part 130 that can freely adjust the load size of the first training device 100 (refer to Figures 6 to 11).

Accompanying the rotation of the crankshaft portion 6 and the axial horizontal movement, the connecting joint portion 12 is moved, and the sliding shaft portion 13 is moved up and down through the connecting joint portion 12. That is, the sliding shaft portion 13 moves up and down by the axial rotation of the active shaft portion 4 and the axial horizontal movement of the crankshaft portion 6, and the load imparting portion (counterweight 131) of the first training device 100 (refer to Figures 6 to 11) connected to the sliding shaft portion 13 moves up and down. Furthermore, in the load transmission mechanism 1A for training equipment, the first rotation transmission part 1K has: a driving shaft sprocket 4c provided on the driving shaft 4, an intermediate shaft sprocket 5c, and a transmission chain 10 suspended between the driving shaft sprocket 4c and the intermediate shaft sprocket 5c. The second rotation transmission part 1M has: an intermediate shaft umbrella gear 5d provided on the intermediate shaft 5; and a crankshaft umbrella gear 6c engaged with the intermediate shaft umbrella gear 5d. The rotation of the driving shaft 4 is transmitted to the crankshaft 6 by the first rotation transmission part 1K and the second rotation transmission part 1M. Since the driving shaft 4 and the crankshaft 6 are axially supported in the outer housing 3 , the axial horizontal movement of the driving shaft 4 toward the crankshaft 6 is transmitted to the crankshaft 6 via the inner housing 3 .

In the load transmission mechanism 1A for training equipment, the sliding shaft 13 moves forward and backward by connecting the joint 12, by the rotation of the crankshaft 6 and the axial horizontal movement. In this way, the active shaft 4 (grip 11) is applied with a force proportional to the load of the load imparting part 130 (refer to Figures 6 to 11). In addition, the user causes the grip 11 belonging to the input part to rotate relative to the active shaft 4 against the rotational force, and the sliding shaft 13 is pulled into the inside of the outer housing 2, and the load imparting part 130 connected to the sliding shaft 13 is stretched (pulled up). Furthermore, when the user causes the grip portion 11 to move horizontally along the axial direction of the crank portion 6 against the opposing force of the active shaft portion 4, the sliding shaft portion 13 is pulled into the interior of the outer housing 2, and the load imparting portion 130 connected to the sliding shaft portion 13 is stretched (pulled up).

<Description of the operation of the load transmission mechanism 1A for training equipment>

Referring to Fig. 2 to Fig. 5, the operation of the load transfer mechanism 1A for the training device is described. Fig. 2 is a diagram showing the initial posture of the load transfer mechanism 1A for the training device (hereinafter referred to as the load transfer mechanism 1A) during operation, Fig. 3 is a diagram for describing the operation of the load transfer mechanism 1A accompanying the rotation of the active shaft 4, Fig. 4 is a diagram for describing the operation of the load transfer mechanism 1A accompanying the horizontal movement of the active shaft 4, and Fig. 5 is a diagram for describing the operation of the load transfer mechanism 1A accompanying the rotation and horizontal movement of the active shaft 4.

In the initial position of the load transmission mechanism 1A shown in Fig. 2, the active shaft portion 4 is located at the rightmost position in Fig. 2, and the connecting joint portion 12 is stretched most upward. That is, in the initial position of the load transmission mechanism 1A, the second end portion 13c of the sliding shaft portion 13 is located at the highest position.

The load transmission mechanism 1A shown in FIG3 shows a state where the active shaft portion 4 is rotated while remaining in the initial position shown in FIG2. When the user rotates the grip portion 11, the rotation of the grip portion 11 becomes the rotation of the active shaft portion 4, which is transmitted to the intermediate shaft portion 5 via the first rotation transmission portion 1K, and then transmitted to the crankshaft portion 6 via the second rotation transmission portion 1M. With the rotation of the crankshaft portion 6, the first universal joint 12b and the second universal joint 12d of the connecting joint portion 12 bend along the circumferential direction of the crankshaft. By this bending, the connecting joint portion 12 is bent inside the load transmission mechanism 1A, thereby pulling the sliding shaft portion 13 into the load transmission mechanism 1A, and lifting the load imparting portion 130 (weight 131) of the first training device 100 (refer to FIGS. 6 to 11) connected to the sliding shaft portion 13. Therefore, the load of the load imparting portion 130 (weight 131) acts on the rotation of the grip portion 11 by the user.

The load transmission mechanism 1A shown in FIG4 shows a state where the active shaft 4 is horizontally moved to the left side of the figure from the initial position of the active shaft 4 shown in FIG2 without rotating. As the user's grip 11 is horizontally moved to the left side of the figure, the horizontal movement of the grip 11 becomes the horizontal movement of the active shaft 4, and the horizontal movement is transmitted to the intermediate shaft 5 and the crankshaft 6 via the inner housing 3. Accompanying the horizontal movement of the crankshaft 6, the first universal joint 12b and the second universal joint 12d of the joint 12 bend along the axial direction of the crankshaft 6. By this bending, the connecting joint portion 12 is bent inside the load transmission mechanism 1A, thereby pulling the sliding shaft portion 13 into the load transmission mechanism 1A, and lifting the load imparting portion 130 (weight 131) of the first training device 100 (refer to FIGS. 6 to 11) connected to the sliding shaft portion 13. Therefore, the load of the load imparting portion 130 (weight 131) acts on the rotation of the grip portion 11 by the user.

The load transmission mechanism 1A shown in FIG5 shows a state in which the active shaft portion 4 is horizontally moved from the position of the active shaft portion 4 in the initial position shown in FIG2 to the left side in the figure together with the rotating active shaft portion 4. By the user's rotating the grip portion 11 and horizontally moving it to the left side in the figure, the rotation and horizontal movement of the grip portion 11 become the rotation and horizontal movement of the active shaft portion 4. The rotation of the grip portion 11 is transmitted to the intermediate shaft portion 5 via the first rotation transmission portion 1K, and then transmitted to the crank portion 6 via the second rotation transmission portion 1M. The horizontal movement of the grip portion 11 is transmitted to the intermediate shaft portion 5 and the crank portion 6 via the inner housing 3. Accompanying the rotation and horizontal movement of the crankshaft portion 6, the first universal joint 12b and the second universal joint 12d of the connecting joint portion 12 bend along the circumferential direction and the axial direction of the crankshaft. Due to the bending, the connecting joint portion 12 bends inside the load transmission mechanism 1A, thereby pulling the sliding shaft portion 13 into the load transmission mechanism 1A, and lifting the load imparting portion 130 (counterweight 131) of the first training device 100 (refer to Figures 6 to 11) connected to the sliding shaft portion 13. Therefore, the load of the load imparting portion 130 (counterweight 131) acts on the rotation and horizontal movement of the grip portion 11 performed by the user.

Compared with the case where the grip 11 is only rotated or only moved horizontally, the bending degree of the connecting joint 12 becomes larger when the grip 11 is rotated and moved horizontally, thereby pulling the sliding shaft 13 further into the interior of the load transfer mechanism 1A, consuming more energy.

Furthermore, in the state of the load transfer mechanism 1A shown in FIGS. 3, 4, and 5, a force (restoring force) to restore to the initial state shown in FIG. 2 acts on the grip portion 11 through the load action of the load imparting portion 130 (counterweight 131). The user maintains the state of FIGS. 3, 4, and 5 while resisting the restoring force, or further rotates or moves the grip portion 11 horizontally, or restores it to the initial position.

＜1st training equipment 100＞

The structure of the first training device 100 is shown in Figures 6 and 7. The first training device 100 is a device equipped with a load transmission mechanism 1A.

<Description of the Structure of the First Training Apparatus 100>

As shown in FIGS. 6 to 11, the first training device 100 comprises: a seat 110; a frame 120, which supports the seat 110; a load imparting portion 130, which is disposed on the frame 120 and the load size can be freely adjusted; two guide pillars 140, which are fixed in the vertical direction with a predetermined interval so that the seat 110 is located in the center of the frame 120; two load transfer mechanisms 1A, which are respectively embedded in one end side of the two guide pillars 140 and can move freely up and down and rotate freely in the horizontal direction. The handle 11 is connected to the lower end of the handle 11 of the two load transfer mechanisms 1A; the tension member 180 has one end connected to the load imparting portion 130, and the other end is wound around the direction change guide wheel 170 provided on the frame 120, and is connected to the other end side of the guide support 140 of the load transfer mechanism 1A at the fitting position; and is connected to the other end side of the tension member 180 in the load transfer mechanism 1A, so that the load is applied to the rotation centered on the axis of the handle 11 through the load imparting portion 130.

The seat portion 110 is composed of a suitable seat 111 and a seat support 112 vertically provided on the lower surface of the seat 111 so that the user of the first training device 100 can sit facing forward.

The frame 120 stably sets the first training device 100 on the surface and becomes the skeleton of the first training device 100 as a whole, fixing the seat 110, the load imparting part 130, the two guide pillars 140, etc. A hole is vertically penetrated in the front of the center of the lower surface of the frame 120, and the seat pillar 112 is inserted, and the seat 110 is supported by the frame 120. The frame 120 has a thigh pressing part 121, which prevents the thigh of the user sitting on the seat 111 from lifting up. The thigh pressing part 121 is preferably used to form a suitable arch on the back of the user during training.

The load imparting part 130 can freely adjust the load size set on the frame 120, and it has: a counterweight 131, which is composed of a plurality of plate-shaped plates belonging to a metal weight component; a counterweight guide support 132, which supports the counterweight 131 on the frame 120 to move up and down freely; and a clamp (not shown), which can freely connect and separate the counterweights 131. The load (load) of the load imparting part 130 can be adjusted by increasing or decreasing the number of counterweights 131. A pair of cylindrical counterweight guide pillars 132 are located behind the seat portion 110, and the upper and lower ends are fixed to the frame 120 in the vertical direction with a predetermined left and right interval. The plate-like plates of the counterweight 131 are inserted into the through holes and stacked, and are supported by the frame assembly 120 so as to be able to move freely up and down.

The two load transfer mechanisms 1A are freely movable up and down through the connection part 7, and are respectively engaged with the two guide pillars 140 so as to be freely rotatable in the horizontal direction. The gripping part 11 connected to the active shaft part 4 of the load transfer mechanism 1A is a ring handle as an input part for the user to hold and input force with his hands. Each gripping part 11 can be axially rotated in the horizontal direction relative to the load transfer mechanism 1A. In addition, the gripping part 11 can also be swung. In the initial state (refer to Figures 6 and 7), each gripping part 11 is in a position where the back of the hand of the user holding each gripping part 11 faces the outside of the first training device 100. In the initial state, each gripping part 11 is located above the position of the hand of the user sitting on the seat 111 and extending his arm upward. Furthermore, the user can lower the load transmission mechanism 1A via the grip 11. At this time, the user can open both arms from the center (the center line of the left and right sides of the body) outward in front of the chest (refer to Figures 8 and 9).

Compared to the first training device 100 shown in FIGS. 6 , 7 , 8 and 9 , which is used to move both arms simultaneously, the first training device 100 shown in FIGS. 10 and 11 is used to move the arms one by one.

The stretching member 180 of the first training apparatus 100 shown in Figs. 6, 7, 8 and 9 uses two ropes or wires of the same length, one end of each of the two stretching members 180 is connected to the counterweight 131, and the other end of each is connected to the load transmission mechanism 1A. The two stretching members 180 fixed at one end to the counterweight 131 are respectively wound around the direction conversion guide wheel 170. The direction conversion guide wheel 170 converts the downward load applied to the stretching member 80 by the counterweight 131 into an upward load.

In contrast, the stretching member 180 of the first training apparatus 100 shown in FIGS. 10 and 11 uses a single rope or wire. Both ends of the single stretching member 180 are connected to two load transfer mechanisms 1A, respectively. A movable pulley is provided in the box portion 133 provided at the upper end of the counterweight 131, and the stretching member 180 is wound around the movable pulley. When one of the two load transfer mechanisms 1A is pulled down, the stretching member 180 uses the other load transfer mechanism 1A as a fulcrum and together with the pulley, lifts the counterweight 131 upward.

In the initial state shown in FIG6 and FIG7, the rotation of the load transfer mechanism 1A is restricted. In contrast, in the state shown in FIG8 and FIG9, the user can resist the force that rotates the load transfer mechanism 1A toward the front direction and rotate the load transfer mechanism 1A to a predetermined angle. The force that rotates the load transfer mechanism 1A toward the front direction is proportional to the load of the load imparting part 130 and is roughly inversely proportional to the up and down position of the load transfer mechanism 1A.

10 and 11, in the first training apparatus 100, it is also possible to perform training by making the lifting movements of the left and right load transfer mechanisms 1A different.

The load transmission mechanism 1B for the training apparatus of the second embodiment (hereinafter referred to as the load transmission mechanism 1B), the load transmission mechanism 1D for the training apparatus of the fourth embodiment (hereinafter referred to as the load transmission mechanism 1D), and the load transmission mechanism 1E for the training apparatus of the fifth embodiment (hereinafter referred to as the load transmission mechanism 1E) described later can be installed on the first training apparatus 100 for use in place of the load transmission mechanism 1A. The two load transmission mechanisms 1B, 1D, and 1E are similar to the load transmission mechanism 1A, and are respectively fitted in the two guide pillars 140 of the first training apparatus 100 so as to be freely movable up and down and freely rotatable in the horizontal direction through the connecting portion 7.

<Description of the method of use of the first training device 100>

The representative methods of use of the first training device 100 are described in order. First, a weight 131 is arranged according to the load configuration in consideration of the user's muscle strength, purpose, etc. The user sits on the seat 111 facing forward, and the seat 111 is adjusted to an appropriate height and fixed so that the sole of the foot contacts the surface. Furthermore, the thigh pressing part 121 is adjusted to an appropriate height and fixed, that is, the degree of contact with the upper surface of the thigh of the user sitting on the seat 111.

Next, the user stands up and holds the grip 11 with the back of the hand facing the left and right sides of the first training device 100 according to the initial state of the load transfer mechanism 1A facing the front direction (see FIGS. 6 and 7 ). Then, while holding the grip 11 with the hand stretched upward, the user stretches the grip 11 downward and sits on the seat 111 facing the front direction.

Next, the user uses a force proportional to the load of the load imparting part 130 to resist the rotational force acting on the grip 11, twists both upper arms outward, and rotates each grip 11 around the axis in the horizontal direction relative to the load transmission mechanism 1A, so that the back of the hand holding each grip 11 faces the front direction of the first training device 100. By taking the position of this "avoidance action", the flexor and extensor muscles are "relaxed", and the shoulder or arm is in a relaxed state. In addition, the grip 11 is forced upward by the load of the load imparting part 130, and the muscles near the shoulder girdle are appropriately "stretched".

Next, the user bends both arms against the load of the load imparting part 130, and "shortens" the muscles to pull down the grip part 11, so as to cause a "reflex" in the muscles near the shoulder girdle and the like that are appropriately "stretched". At this time, the user further applies the "relaxation" and "stretching" actions of twisting the upper arms outward, while pulling down the grip part 11 with both hands. By twisting the upper arms outward, each grip part 11 is further rotated in the outward horizontal direction relative to the load transmission mechanism 1A, thereby pulling up the counterweight 131, and the load is reduced in the initial action of pulling down the arms. In this way, when the arms are bent and the grip 11 is pulled down to "shorten" the muscles, by further twisting the upper arms outward, the "relaxation" and "stretching" movements are applied while the appropriate "shortening" timing is made to appear, and each muscle group gets the "relaxation-stretch-shortening" timing, and the movement can be performed with good linkage.

Furthermore, the user can apply the load appropriately adjusted by the load-applying part 130 to the three directions of downward direction, rotation direction and lateral direction, that is, lower the arms, and then twist and extend the upper arms outward, so that each muscle group that is appropriately "stretched" gets the opportunity of "relaxation-stretching-shortening", and can perform actions with good linkage. Furthermore, when the upper arms are extended outward, the load appropriately adjusted by the load-applying part 130 (counterweight 131) is applied to the horizontal movement of the grip part 11 (active shaft part 4).

When the user bends his arms and pulls down the grip 11, he gradually expands his arms outwards in a manner that each load transfer mechanism 1A faces outwards, resisting the force that is applied by rotation of each load transfer mechanism 1A in the forward direction. Since the force that is applied by rotation of the load transfer mechanism 1A in the forward direction is roughly inversely proportional to the position (height) of the load transfer mechanism 1A, the resistance to the arms extending outwards is reduced as the arms are bent and the grip 11 is pulled down. Therefore, when bending the arms and pulling down the grip portion 11, the user outputs a roughly constant muscle force in the form of opening the arms outward, so that the movement of gradually opening the arms outward while pulling down the grip portion 11 can be performed smoothly, which can prevent the active muscles and antagonist muscles from contracting at the same time.

Next, after the user pulls down each grip 11 to the height of the shoulder, the user twists the upper arm inward, closes the arms inward, and stretches the arms according to the forces generated by the load of the load imparting part 130, thereby slowly restoring the back of the hand to the state of sitting according to the grip 11. Thus, one cycle of training ends. Then, the training is repeated for an appropriate number of cycles.

＜Load transmission mechanism 1B for training device of the second embodiment＞

Next, referring to FIG. 12 and FIG. 13, the load transmission mechanism 1B for the training device of the second embodiment (hereinafter referred to as the load transmission mechanism 1B) is described. FIG. 12 is a front view for describing the internal structure of the load transmission mechanism 1B of the second embodiment, and FIG. 13 is a top view for describing the internal structure of the load transmission mechanism 1B. The load transmission mechanism 1B is used by being connected to the first training device 100 and the second training device 201 described later.

Compared with the load transfer mechanism 1A of the first embodiment, the load transfer mechanism 1B has a different structure of the shell portion 22 (see FIG. 12 ). The shell portion 22 is not composed of two parts like the outer shell 2 and the inner shell 3 of the load transfer mechanism 1A of the first embodiment. The shell portion 22 plays the role of the shell of the load transfer mechanism 1B. Hereinafter, in the description of the load transfer mechanism 1B, the components common to the load transfer mechanism 1A of the first embodiment are given the symbols used in the description of the load transfer mechanism 1A in Figures 12 and 13 and their description is omitted, and only the components different from the load transfer mechanism 1A of the first embodiment are described in detail.

The active shaft portion 4 has an input portion for the user's input force, i.e., the grip portion 11 held by the user or the footrest portion 271 of the user, connected to the end portion and rotates together with the grip portion 11 or the footrest portion 271.

12 and 13 show an example of connecting the grip 11 as an input portion to the active shaft 4. When the footrest 271 is used as the input portion instead of the grip 11, the end of the active shaft 4 is made to protrude to the same side as the second end 13c of the sliding shaft 13, and the footrest 271 is connected to the end of the active shaft 4 protruding to the same side as the second end 13c of the sliding shaft 13.

The first rotation transmission unit 1K is suspended between the intermediate shaft unit 5 that rotates in conjunction with the rotation of the driving shaft unit 4, the driving shaft unit 4, and the intermediate shaft unit 5, and transmits the rotation between the driving shaft unit 4 and the intermediate shaft unit 5.

The second rotation transmission portion 1M is disposed between the intermediate shaft portion 5 and the crankshaft portion 6 orthogonal to the intermediate shaft portion 5, and transmits the rotation between the intermediate shaft portion 5 and the crankshaft portion 6.

The connecting and fixing portion 23 connects the active shaft portion 4 , the intermediate shaft portion 5 , and the crankshaft portion 6 , and transmits the horizontal movement of the active shaft portion 4 , the intermediate shaft portion 5 , and the crankshaft portion 6 .

The sliding shaft portion 13 is allowed to be displaced in a direction perpendicular to the axial direction of the crankshaft portion 6, and is urged in a linear direction by an external force.

The connection joint portion 12 is allowed to rotate about the first center axis 12g orthogonal to the axis of the sliding shaft portion 13, and about the second center axis 12h orthogonal to the first center axis 12g by combining a plurality of connection pieces 30, and one of the plurality of connection pieces 30 is connected to the sliding shaft portion 13.

The connecting joint portion 12 is connected to the crankshaft portion 6 in a connecting piece portion 30 different from a connecting piece portion 30 connected to the sliding shaft portion 13, and has a central axis that is orthogonal to the axial direction of the crankshaft portion 6 and is allowed to rotate, so as to convert the rotation and axial movement of the crankshaft portion 6 into an upward and downward displacement of the sliding shaft portion 13. When the user moves the active shaft portion 4 horizontally via the grip portion 11 or the footrest portion 271, the external force applied to the sliding shaft portion 13 is transmitted to the grip portion 11 or the footrest portion 271 via the active shaft portion 4.

The driving shaft 4, the intermediate shaft 5, the crankshaft 6 and the sliding shaft 13 of the load transmission mechanism 1B are rotatably accommodated in the housing 22. The driving shaft 4, the intermediate shaft 5 and the crankshaft 6 are connected by the connecting and fixing part 23, and they are integrated and move horizontally along the axis of the crankshaft 6. The connecting and fixing part 23 has a first fixing piece 23a and a second fixing piece 23b. The first fixing piece 23a and the second fixing piece 23b are flat plate-shaped, and the first fixing piece 23a and the second fixing piece 23b are connected in an orthogonal manner (refer to Figure 12).

The first fixed piece 23a has a driving shaft bearing 23c and an intermediate shaft bearing 23d on its surface. The driving shaft bearing 23c rotatably supports the driving shaft portion 4, and the intermediate shaft bearing 23d rotatably supports the intermediate shaft portion 5. Since the surface of the first fixed piece 23a is a flat plate, the driving shaft bearing 23c and the intermediate shaft bearing 23d are held perpendicular to the surface of the first fixed piece 23a, and the driving shaft portion 4 and the intermediate shaft portion 5 are held in a parallel state. The second fixed piece 23B has a crankshaft bearing 23e, and the crankshaft portion 6 rotatably supports the crankshaft bearing 23e. Since the surface of the second fixing piece 23B is a flat plate, the crankshaft portion 6 is held perpendicularly to the surface of the second fixing piece 23b. Since the first fixing piece 23a and the second fixing piece 23b are connected in an orthogonal manner, the crankshaft portion 6 is arranged to be perpendicular to the active shaft portion 4 and the intermediate shaft portion 5. The housing portion 22 has a sliding bearing 13a, and the sliding shaft portion 13 is supported by the sliding bearing 13a so as to be displaceable in the up-down direction. The up-down direction here is a direction parallel to the axial direction of the active shaft portion 4 and the intermediate shaft portion 5, and is a direction orthogonal to the axial direction of the crankshaft portion 6.

A linear guide portion 20 described below is provided inside the housing portion 22 , and the linear guide portion 20 guides the slider 20 c inside the housing portion 22 so as to perform linear movement parallel to the axial direction of the crankshaft portion 6 .

The first fixing piece 23a is fixed to the linear guide 20 and is disposed inside the housing 22. The linear guide 20 includes a first guide 20a, a second guide 20b, a slider 20c, and a guide support 20d. The first guide 20a and the second guide 20b are fixed to the guide support 20d so that their length directions are consistent with the axial direction of the crankshaft 6 and are parallel to each other, and the guide support 20d is fixed to the inside of the housing 22. The linear guide includes a slider 20c so that it spans the first guide 20a and the second guide 20b and is guided by the first guide 20a and the second guide 20b to move (slide).

When the user moves the grip portion 11 horizontally along the axial direction of the crank portion 6 , the horizontal movement of the grip portion 11 becomes the horizontal movement of the active shaft portion 4 , and the horizontal movement of the active shaft portion 4 is transmitted to the intermediate shaft portion 5 and the crank portion 6 via the connecting and fixing portion 23 .

According to the load transfer mechanism 1B of the second embodiment, compared with the load transfer mechanism 1A of the first embodiment, since it does not have the inner housing 3, the structure of the load transfer mechanism 1B bearing housing can be simplified, and the overall weight of the load transfer mechanism 1B can be reduced.

Next, the first variation 1Ba and the second variation 1Bb of the load transfer mechanism 1B of the second embodiment are described with reference to Fig. 31 and Fig. 32. Fig. 31 is a diagram for describing the first variation 1Ba of the load transfer mechanism 1B for the training device of the second embodiment, and Fig. 32 is a diagram for describing the second variation 1Bb of the load transfer mechanism 1B for the training device of the second embodiment.

<First variation 1Ba of the load transmission mechanism 1B for training equipment of the second embodiment>

Referring to FIG. 31 , the first variation 1Ba of the load transfer mechanism 1B is described. In FIG. 31 , the common parts of the first variation 1Ba (see FIG. 31 ) and the load transfer mechanism 1B (see FIG. 12 and FIG. 13 ) are given the symbols used in the load transfer mechanism 1B (see FIG. 12 and FIG. 13 ), and their description is omitted. Hereinafter, for the first variation 1Ba, only the parts that are different from the load transfer mechanism 1B are described. The difference between the first variation 1Ba and the load transfer mechanism 1B lies in the structure of the connecting joint 12. The connecting joint piece 12 of the load transmission mechanism 1B includes the first joint piece 12a, the second joint piece 12c, and the third joint piece 12e belonging to the connecting piece portion 30. In contrast, the first variation 1Ba includes the ball joint 42 instead of the second joint piece 12c. Therefore, the connecting joint piece 12 of the first variation 1Ba includes the first joint piece 12a, the ball joint 42, and the third joint piece 12e belonging to the connecting piece portion 30.

The connection joint portion 12 is allowed to rotate about a center axis 12g orthogonal to the axis of the sliding shaft portion 13, and to rotate in a direction orthogonal to the center axis 12g by a combination of a plurality of connection pieces 30, and one of the plurality of connection pieces 30 (30(12e)) is connected to the sliding shaft portion 13.

The first joint piece 12a and the ball joint 42 are connected by the first universal joint 12b belonging to the universal joint 40 (41). The ball joint 42 and the third joint piece 12e are connected by the second universal joint 12d belonging to the universal joint 40 (41). The first universal joint 12b and the second universal joint 12d of the universal joint 40 use a connecting rod 41 (see Figure 30).

A ball joint is a joint that is composed of a ball stud that mounts a round rod on a metal ball and a socket that contacts the spherical surface. It can be rotated in any direction and has high rigidity in the parallel direction. Examples of ball studs include connecting rod ball joints and three-ball joints.

As shown in FIG. 31 , the first joint piece 12a is connected to the crankshaft portion 6 so as to be rotatable about the fourth center axis 12k. The first universal joint 12b is connected to the first joint piece 12a so as to be rotatable about the third center axis 12j. The first universal joint 12b and the second universal joint 12d are connected to be rotatable in any direction via the ball joint 42. The second universal joint 12d is connected to the third joint piece 12e so as to be rotatable about the first center axis 12g. The third joint piece 12e is connected to the lower end of the sliding shaft portion 13 so as to be rotatable about the center axis of the sliding shaft portion 13. Thereby, the connecting joint portion 12 can smoothly convert the horizontal movement of the crankshaft portion 6 in the axial direction and the rotation centered on the crankshaft portion 6 into the reciprocating movement of the sliding shaft portion 13 in the vertical direction.

In the first variation 1Ba, the connecting joint portion 12 uses a ball joint 42 in one of the connecting piece portions 30, so that the bending of the connecting joint portion 12 becomes smoother, and the rotation and horizontal movement of the active shaft portion 4 can be transmitted to the sliding shaft portion 13 more smoothly.

Furthermore, the connecting joint 12 of the first variation 1Ba can be used as the connecting joint 12 of the load transfer mechanism 1A of the first embodiment, the load transfer mechanism 1C of the third embodiment, the load transfer mechanism 1D of the fourth embodiment, and the load transfer mechanism 1E of the fifth embodiment.

In this case, the load transfer mechanisms 1A, 1C, 1D and 1E can obtain the same effect as the first variation 1Ba. By using a ball joint 42 in one of the connecting pieces 30, the bending of the connecting joint 12 becomes smooth, and the rotation and horizontal movement of the active shaft 4 can be transmitted more smoothly to the sliding shafts 13, 14, 15.

<Second Modification 1Bb of the Load Transmitting Mechanism 1B for Training Device of the Second Implementation Form>

Next, referring to FIG. 32, the second variation 1Bb of the load transfer mechanism 1B is described. In FIG. 32, the common parts of the second variation 1Bb (refer to FIG. 32) and the load transfer mechanism 1B (refer to FIG. 12 and FIG. 13) are given the symbols used in the load transfer mechanism 1B (refer to FIG. 12 and FIG. 13), and their description is omitted. Hereinafter, for the second variation 1Bb, only the parts different from the load transfer mechanism 1B are described.

In the crankshaft portion 9 of the second variation 1Bb and the crankshaft portion 6 of the load transmission mechanism 1B, the connection position with the connection joint portion 12 is different. The distance between the base end of the crankshaft portion 9 of the second variation 1Bb and the connection position of the connection joint portion 12 is greater than the distance between the base end of the crankshaft portion 6 of the load transmission mechanism 1B and the connection position of the connection joint portion 12 (refer to Figures 12 and 32). This difference is manifested in that the initial postures of the second variation 1Bb and the load transmission mechanism 1B are different. Specifically, the initial posture of the second variation example 1Bb is the state in which the active shaft portion 4 (grip portion 11) in FIG. 32 is located at the far left side, and the initial posture of the load transfer mechanism 1B is the state in which the active shaft portion 4 (grip portion 11) in FIG. 12 is located at the far right side.

Furthermore, in the second variation 1Bb and the load transmission mechanism 1B, the direction of horizontal movement of the load applied to the active shaft portion 4 is different. The load transmission mechanism 1B applies a load in the opposite direction to the moving direction (in the right direction in FIG. 12 ) when the active shaft portion 4 (grip portion 11) moves from the initial position (to the rightmost in FIG. 12 ) to the direction away from the sliding shaft portion 13 (in the left direction in FIG. 12 ). Furthermore, when the active shaft portion 4 (grip portion 11) moves in the direction approaching the sliding shaft portion 13 (in the right direction in FIG. 12 ), a load is applied in the same direction as the moving direction (in the right direction in FIG. 12 ).

On the other hand, in the second variation 1Bb, when the active shaft portion 4 (grip portion 11) moves from the initial position (the leftmost position in FIG. 32 ) toward the direction approaching the sliding shaft portion 13 (the right direction in FIG. 32 ), a load is applied in the direction opposite to the moving direction (the left direction in FIG. 32 ). Furthermore, when the active shaft portion 4 (grip portion 11) moves toward the direction away from the sliding shaft portion 13 (the left direction in FIG. 32 ), a load is applied in the direction identical to the moving direction (the left direction in FIG. 32 ).

In the second variation 1Bb and the load transfer mechanism 1B, since the directions of applying the load to the same action are exactly opposite, a variety of muscle strength training can be performed by using both.

＜Third embodiment of load transmission mechanism 1C for training equipment＞

Referring to Figs. 14 to 16 and Fig. 18, the structure and operation of the load transfer mechanism 1C for the training device of the third embodiment (hereinafter referred to as the load transfer mechanism 1C) are explained. Fig. 14 is a diagram for explaining the structure of the load transfer mechanism 1C, Fig. 15 is the first diagram for explaining the operation of the load transfer mechanism 1C accompanying the rotation and parallel movement of the active shaft 276, Fig. 16 is the second diagram for explaining the operation of the load transfer mechanism for the training device of the third embodiment accompanying the rotation and parallel movement of the active shaft, and Fig. 18 is an enlarged view of the footrest 271 of the second training device 201. The load transmission mechanism 1C is used by being connected to the second training device 201 described later.

The load transmission mechanism 1C has a footrest 271 as a user force input portion connected to the active shaft portion 276. The load transmission mechanism 1C is different from the load transmission mechanism 1A of the first embodiment in that the active shaft portion 276 is configured differently from the active shaft portion 4 (see FIG. 1 ) of the load transmission mechanism 1A. The active shaft portion 276 is different from the load transmission mechanism 1A in that the end portion thereof protrudes on the same side as the sliding shaft portion 13 and the footrest 271 is connected to the end portion. Hereinafter, in the description of the load transfer mechanism 1C, the components common to the load transfer mechanism 1A of the first embodiment are given the same symbols as those used in the description of the load transfer mechanism 1A in FIGS. 14 to 16 and 18 and their description is omitted, and only the components different from the load transfer mechanism 1A of the first embodiment are described in detail.

The load transfer mechanism 1C is rotated 90 degrees from the load transfer mechanism 1A of the first embodiment (see FIG. 1 ) and is used in a state of standing up with the axial direction of the crankshaft 6 being substantially vertical. The driving shaft 276 is located near the upper portion 277 of the main body.

The user places either left or right foot on the footrest 271. The footrest 271 has an area slightly larger than the size of the user's foot. The footrest 271 includes a third rotation axis 273, a side plate 274a, a side plate 274b, and a connecting plate 275.

The connecting plate 275 is vertically connected to the driving shaft 276 at the center thereof. Flat plate-shaped side plates 274a and 274b are provided at both ends of the connecting plate 275 and are vertically connected to the connecting plate 275. The third rotating shaft 273 is vertically connected to the side plates 274a and 274b so as to be freely rotatable.

The third rotating shaft 273 is rotatably supported by a bearing 272 (see FIG. 18 ) provided on the back of the support portion 271 . Thus, the support portion 271 can rotate around the third rotating shaft 273 . In addition, the support portion 271 can rotate around the driving shaft 276 .

That is, the footrest 271 can rotate around two different axes that are orthogonal to each other. Therefore, by having the structure shown in Figures 14 and 18, the user can expand the degree of freedom of the leg placement method such as the direction of the thigh and the bending angle of the leg, place the sole of the foot on the footrest 271 in a stress-free manner, place the leg at a desired angle, and press the footrest 271 with the foot. Therefore, the user can apply a load to his or her body including the leg through the second training device 201 in the form (angle or force) desired by the user.

<Description of the operation of the load transmission mechanism 1C for the training device of the third embodiment>

The user can use the load transfer mechanism 1C to perform various leg movements. Referring to Figures 14 to 16, the following will illustrate an example of leg movement while explaining the movement of the load transfer mechanism 1C. As an example of leg movement, the movement of the load transfer mechanism 1C accompanying the movement of flexing and extending the user's knee joint will be explained.

As the initial posture of the user, the knee joint is bent and the back of the foot is placed on the footrest 271 with the back of the foot facing upward (see FIG. 19 ). At this time, the state of the footrest 271 is as shown in FIG. 14 . The footrest 271 is located at the uppermost part of the load transfer mechanism 1C, and the direction of the footrest 271, and more specifically, the direction of the user's foot, is in a state where the back of the foot is facing upward. In the state shown in FIG. 14 , the sliding shaft 13 extends out of the outer shell 2 to the maximum extent.

Next, the user slowly stretches the knee joint while tilting the knee joint inward to rotate the leg (see FIGS. 20 and 21). When stretching the knee joint, the user pushes the leg upward diagonally and moves the footrest 271 upward parallelly. When the knee joint is opened to the maximum extent, the user tilts the knee joint inward to the maximum extent (see FIG. 21). At this time, the state of the footrest 271 is as shown in FIG. 16. The footrest 271 is located at the uppermost part of the load transfer mechanism 1C, and the footrest 271 is in a state of maximum rotation around the axis of the active shaft 276. In the state shown in FIG. 16 , the sliding shaft portion 13 is pulled into the interior of the outer housing 2 to the maximum extent.

FIG15 shows a state in the process of transitioning from the state shown in FIG14 to the state shown in FIG16 in the state of the load transfer mechanism 1C.

In the load transmission mechanism 1C, by rotating the footrest 271, the rotation of the active shaft 276 is transmitted to the sliding shaft 13 via the first rotation transmission part 1K, the second rotation transmission part 1M, and the connecting joint 12. The sliding shaft 13 is relatively displaced relative to the outer housing 2, and the displacement causes the weight of the load imparting part 230 to move up and down. The user can perform the rotation movement of the footrest 271 while resisting the force generated by the load imparting part 230.

Furthermore, in the load transmission mechanism 1C, by making the footrest 271 move parallelly upward in FIG. 14, the parallel movement of the active shaft 276 is transmitted to the sliding shaft 13 via the inner housing 3 and the connecting joint 12, and the sliding shaft 13 is relatively displaced relative to the outer housing 2, and the displacement causes the counterweight of the load imparting part 230 to move up and down. The user can perform the parallel movement of the footrest 271 while resisting the force generated by the load imparting part 230.

Furthermore, in the state of the load transfer mechanism 1C shown in FIG15, a force (restoring force) to restore to the initial state shown in FIG14 acts on the footrest 271 by the load action of the counterweight of the load imparting part 130. The user maintains the state of FIG15 while resisting the restoring force, or further rotates or moves the footrest 271 in parallel (see FIG16), or restores to the initial position (see FIG14).

＜Second training equipment 201＞

The structure and operation of the second training device 201 will be described with reference to Figures 17 to 21. Figure 17 is a perspective view showing the appearance of the second training device 201.

<Description of the structure of the second training device 201>

As shown in FIG. 17 , the second training device 201 includes: a seat portion 210 for a user to sit on; a load imparting portion 230 for imparting a load; a guide support 240 which is a cylindrical shape extending in a vertical direction; a lifting portion 250 which is guided by the guide support 240 and is connected so as to be movable and rotatable in the vertical direction; and a gripping portion 260 which is provided on the lifting portion. 250; a footrest 271 for carrying the sole of the user; slide rails 222a, 222b; a load transfer mechanism 1C having the footrest 271; and a tension member 280, one end of which is connected to the lifting part 250 and the other end of which is connected to the load transfer mechanism 1C, for imparting the load generated by the load imparting part 230 to the lifting part 250 and the load transfer mechanism 1C.

The lifting part 250 can be used in the load transmission mechanism 1A, the load transmission mechanism 1B, and the load transmission mechanism 1D and the load transmission mechanism 1E for the training device described later. The gripping part 260 is equivalent to the gripping part 11 of the load transmission mechanism 1A, the load transmission mechanism 1B, and the load transmission mechanism 1D and the load transmission mechanism 1E for the training device described later, and is an input part for the user to input force.

The second training device 201 is described in detail below using drawings. First, the structure of the second training device 201 is described using Figures 17 and 18. As mentioned above, Figure 17 is a three-dimensional view of the second training device 201, and Figure 18 is an enlarged view of the load transmission mechanism 1C and its surroundings.

As shown in FIG. 17 , in the second training apparatus 201, the seat portion 210 is supported by a frame 220 which is a basic frame of the second training apparatus 201. The frame 220 becomes the skeleton of the entire second training apparatus 201, and assumes the function of stably placing the second training apparatus 201 on a surface. The frame 220 can be formed by processing a prismatic tube or plate made of a material having a certain degree of rigidity such as steel, aluminum, stainless steel, resin, etc., and fixing it by bolts or welding. The seat portion 210 is composed of a seat 211 on which a user sits, and a seat support 212 which supports the seat 211. The seat support 212 is fixed relative to the frame 220. In addition, the seat support 212 holds the seat 211. Although not shown, the seat support 212 has a through hole for the extension member 280 to pass through in the front-rear direction. The seat 211 is a seat for the user (user) of the second training apparatus 201, and as shown in FIG. 17 , it is a rectangular shape that is longer in the left-right direction of the second training apparatus 201. This is because the user can sit on either the right or left side of the seat 211, but if the user can sit without any compulsion, the seat 211 may be a square or a circle instead of a rectangle.

As shown in FIG. 17 , the seating portion 210 may be located behind the seat 211 and may also have a backrest 215 between the seating portion 210 and the load imparting portion 230 for supporting the body of the user during use.

A guide support 240 extending in the vertical direction is provided on the frame 220. As shown in FIG17 , the guide support 240 is provided at a position forward of the load imparting portion 230 and rearward of the seat portion 210. As shown in FIG17 , the frame 220 has an upper shell 225 behind the guide support 240 for guiding the extension direction of the tensile member 280 inside. Moreover, the lower end of the guide support 240 is connected to the shell 220, and the upper end is connected to the upper shell 225 and fixed.

As shown in FIG17 , a shock absorber 241 may also be provided on the guide support 240. The shock absorber 241 is a component for relieving the impact when the lifting part 250 contacts the upper housing 225 and the frame 220. The shock absorber 241 may be realized by rubber or sponge, for example.

The lifting portion 250 shown in FIG17 is mounted on the guide pillar 240. As shown in FIG17, the lifting portion 250 is mounted so as to be freely movable up and down relative to the guide pillar 240. Although not shown, the lifting portion 250 has a through hole for inserting the guide pillar 240. Therefore, the lifting portion 250 moves up and down along the guide pillar 240. In addition, the lifting portion 250 is mounted on the guide pillar 240 so as to be freely rotatable relative to the guide pillar 240 with the guide pillar 240 as the central axis. Therefore, the guide pillar 240 requires a certain degree of rigidity. Therefore, as an example, the guide pillar 240 can be made of stainless steel or the like. In the second training device 201, as the lifting unit 250, the load transfer mechanism 1A of the first embodiment, the load transfer mechanism 1B of the second embodiment, the load transfer mechanism 1D of the fourth embodiment described later, or the load transfer mechanism 1E of the fifth embodiment can also be applied.

As shown in Fig. 17, the load transmission mechanism 1C of the second training apparatus 201 slides along the slide rails 222a and 222b. The slide rail 222a is suspended from the frame 220 of the second training apparatus 201 and the frame 221 disposed in front of the frame 220, and is fixed at both ends. Fig. 18 is an enlarged view of the load transmission mechanism 1C and its surroundings in the second training apparatus 201.

As shown in FIG. 17 , the load-imparting portion 230 is composed of a pair of cylindrical counterweight guide pillars 232 (only one of which is shown on paper in FIG. 17 ) fixed up and down relative to the frame 220, and a counterweight that is movable up and down relative to the counterweight guide pillar 232. A through hole for inserting the counterweight guide pillar 232 is provided on the counterweight. The load-imparting portion 230 can be configured to adjust the size of the load to be imparted. Specifically, the counterweight that serves as a weight component can be set as a plate-like component, and the load can be adjusted according to the number of sheets. Therefore, the load-imparting portion 230 can also have a clamp (not shown) that allows the counterweights to be connected and separated from each other freely. By making the plate-like components of the counterweights fixed weights, the load size can be changed in stages. In addition, a shock absorber 231 may be provided on the counterweight guide support 232 to prevent the counterweight from colliding with the frame 220 with an impact exceeding a certain level.

＜How to use the second training device 201＞

The method of using the second training device 201 will be described with reference to Fig. 19 to Fig. 21. Fig. 19 to Fig. 21 are examples of exercise using the second training device 201, and are left side views showing examples of leg exercise.

As shown in FIG19 , the user sits on the right side of the second training device 201, that is, on the right side of the seat 211. (The front side on the paper of FIG19 ). That is, the load transmission mechanism 1C is set on the left side, the backrest 215 is set on the right side, and the user sits on the seat 211. Furthermore, as shown in FIG19 , the user places the left foot on the footrest 271 of the load transmission mechanism 1C, and bends the knee.

From this state, the user straightens the left leg and presses the load transfer mechanism 1C. In this way, as shown in FIG. 20, the load transfer mechanism 1C slides along the slide rails 222a and 222b. At this time, the user faces the rear direction of the second training device 201 (the left direction of the paper of FIG. 19 to FIG. 21), and applies the load of the load applying part 230 connected to the tension member 280 to the load transfer mechanism 1C, and the tension member 280 is connected to the connection part 279.

Then, as shown in FIG20, starting from the state of straightening the legs, the load transfer mechanism 1C is slowly slid along the slide rails 222a, 222b to return to the original position. This movement is repeated a certain number of times. That is, the user repeats the posture between FIG19 and FIG20 a predetermined number of times.

Furthermore, as shown in FIG. 21 , the user can further twist the waist than in the state shown in FIG. 20 to press the load transfer mechanism 1C further. In this case, the user can stretch the legs while exercising the waist. This posture can be performed because the footrest 271 is configured to rotate freely relative to the load transfer mechanism 1C body. The user can perform leg extension and contraction exercises between FIG. 19 and FIG. 20 , and can also perform leg extension and contraction exercises between FIG. 19 and FIG. 21 .

Although not shown, the user sits on the opposite side of the seat 211 in FIGS. 19 to 21, that is, on the left side (the inner side in the paper of FIGS. 19 to 21) of the second training apparatus 201. That is, since the user sits on the seat 211 in such a manner that the load transfer mechanism 1C is located on the right side of the user and the backrest 215 is located on the left side, the user can also perform exercises with the right leg.

Therefore, the user can exercise both legs symmetrically and perform rotational movements around the waist. Specifically, the user stretches out his legs and kicks the load transfer mechanism 1C to perform a pressing action. Therefore, it is a good example for strengthening the muscles around the user's hip joint, pelvis, thigh, knee, etc.

Each muscle group of the leg gets the opportunity of "relaxation-stretch-shortening" and can move in a well-coordinated manner. Specifically, in the state shown in FIG. 19, it can be said that the load of the load imparting part 230 is not applied to the left leg, and the muscles are in a "stretched" state. In addition, the state shown in FIG. 19 is also a state where only the foot is placed on the footrest 271. Since it is a relaxed state as a whole, it can also be said to be a "relaxed" state.

From then on, the user applies force to the foot, pressing the load transfer mechanism 1C to which the load applying part 230 applies the load. That is, in the process shown in FIG. 19 to FIG. 20 or FIG. 21, the load of the load applying part 230 applied to the user's left leg can cause the muscles of the user's left leg to "shorten". Moreover, in the state shown in FIG. 20 or FIG. 21, by rotating the footrest part 271 relative to the load transfer mechanism 1C, the connecting part 279 is pulled into the load transfer mechanism 1C by the internal rotating mechanism, and the load applied to the leg by the load applying part 230 is increased. That is, as shown in FIG. 20 or FIG. 21, when the load transmission mechanism 1C is rotated, the user's legs can be made to be in a "relaxed" state.

Furthermore, in the process of transitioning from the state shown in FIG. 20 or FIG. 21 to the state shown in FIG. 19 , by restoring the legs to the state of FIG. 19 , the muscles can be put into a "stretched" state.

Therefore, by shifting from the state shown in FIG. 19 to the state shown in FIG. 20 or FIG. 21, and by repeatedly performing the cycle of movement to return to the state shown in FIG. 19, the timing of "relaxation-stretching-shortening" can be generated, and the movement can be performed with good linkage. In addition, for the movement of the legs, the state shown in FIG. 19 can be set as the initial state, and the state shown in FIG. 20 or FIG. 21 can be set as the initial state to perform a cycle of movement, but since it is ideal to start the movement from the "relaxation" state, it is ideal to get the assistance of others and start the movement from the state shown in FIG. 20 or FIG. 21.

Furthermore, by adopting a structure for training one leg at a time instead of training both legs, it is not necessary to prepare a load transfer mechanism 1C for training both legs at once, so the second training device 201 is constructed in a form corresponding to both legs, which can make the size more compact (the width can be narrower than equipping two load transfer mechanisms 1C for both legs), thereby reducing the space area that should be prepared as the installation space of the second training device 201. Furthermore, in the exercise of Figures 19 and 20, the user can also sit on the seat 210 with the load transfer mechanism 1C facing the second training device 201 and leaning against the backrest 215 to exercise.

<Summary of the first training device 100 and the second training device 201>

The first training device 100 and the second training device 201 are devices for appropriately training the muscles of the shoulders, arms, back, legs, etc. by initiation load training (registered trademark). Here, initiation load training is defined as "training that utilizes the body changes toward the position where the reflex occurs and the accompanying changes in the center of gravity position to promote a series of relaxation-stretching-shortening movements of the agonist muscle, and prevents the simultaneous contraction of the antagonist muscle and the antagonist muscle." Initial load training is completely different from final load training, which applies load until the end, while causing muscle hypertrophy accompanied by muscle tension (hardening). Initial load training requires mastering the overall impression of the movement, such as the point of applying the load, the point and angle of releasing the load, the rhythm, and the continuity of muscle output, to conduct training. Previous load training included the following problems: it was difficult to obtain appropriate movements or postures due to body balance or partial hardening. However, by using the first training device 100 and the second training device 201 for implementing initial load training, it is easy to guide ideal training accompanied by a series of movements or postures.

By using the first training device 100 and the second training device 201 for initial load training, "force is transmitted from the center (trunk) to the intersegmental part of the distal part", that is, the muscles of the human body that have contraction characteristics and do not intend to stretch themselves are relaxed and in a relaxed state, and an appropriate load is given to the muscle hammer/tendon organ that is a sensory receptor, starting from the appropriate stretching of the muscles, or starting from the passive stretching of the muscles to induce the force to be exerted when the muscles shorten, and the load is gradually reduced instantaneously and continuously, so that the only muscles of the human body that do not cause simultaneous contraction, which are called cardiac muscles, can obtain an active state that does not cause simultaneous contraction like the cardiac muscles, and neuromuscular control can be promoted/developed.

The initial load training using the first training device 100 and the second training device 201 is a training that uses the load of the training device to induce muscle reflexes, so that the muscles that originally have to work work well, and improve the functions of muscles and nerves. The load is used as a catalyst for promoting the timely stretching and shortening of the relaxed muscles. Moreover, through such training, it is possible to promote a series of movements of relaxation-stretching-shortening, thereby preventing simultaneous contraction, improving the functions or coordination of nerves and muscles, reducing the burden on the body caused by muscle pain or fatigue, and without accompanying muscle hardening, soft and elastic muscles can be obtained. In addition, by forcing the heart rate or blood pressure to rise and reduce, and promoting aerobic metabolism, it can effectively prevent lifestyle diseases such as diabetes and hypertension, promote the healing of ligament injuries and fractures, and relieve nerve/muscle/joint stress, remove waste, etc., creating a state that is beneficial to the body.

<Variation 1Ca of the load transmission mechanism 1C for the training device of the third embodiment>

Next, referring to Fig. 33, a modification 1Ca of the load transmission mechanism 1C of the third embodiment used in the second training device 201 will be described below. Fig. 33 is a diagram for describing a modification 1Ca of the load transmission mechanism 1C for the training device of the third embodiment.

In FIG33, the common parts with the modified example 1Ca (see FIG33) and the load transfer mechanism 1C (see FIG14, FIG15, FIG16) are given the symbols used in the load transfer mechanism 1C (see FIG14, FIG15, FIG16) and their description is omitted. In the following, only the different parts between the modified example 1Ca (see FIG33) and the load transfer mechanism 1C (see FIG14, FIG15, FIG16) are described.

Referring to FIG. 33 , a variation 1Ca of the load transfer mechanism 1C is described. In the variation 1Ca, the moving direction of the leg portion 271 (active shaft portion 4) is different from that of the load transfer mechanism 1C (see FIGS. 14 , 15 , and 16 ). In the load transfer mechanism 1C (see FIGS. 14 , 15 , and 16 ), the moving direction of the leg portion 271 (active shaft portion 4) is at a right angle to the moving direction of the sliding shaft portion 13. That is, the angle formed by the moving direction of the leg portion 271 (active shaft portion 4) and the moving direction of the sliding shaft portion 13 is 90 degrees.

On the contrary, in variation 1Ca (see FIG. 33 ), the moving direction of the footrest 271 (active shaft 4) is 45 degrees relative to the moving direction of the sliding shaft 13. That is, the angle between the moving direction of the footrest 271 (active shaft 4) and the moving direction of the sliding shaft 13 is 45 degrees.

Variation 1Ca (see FIG. 33 ) can reduce the load caused by the weight of the footrest 271 and the active shaft 4 by moving the footrest 271 (active shaft 4) diagonally upward. Since the adjustment range can be increased from a small load to a large load, the user can use it even if they are children, women, the elderly, and other people with weak muscles.

Furthermore, in the load transfer mechanism 1C, when the footrest portion 271 (active shaft portion 4) is moved in the upward direction, it is difficult to apply force to the foot. However, in variation 1Ca, the footrest portion 271 (active shaft portion 4) is moved obliquely upward, so that it is easy to apply force to the foot, making it easy to perform muscle strength training.

＜Load transfer mechanism 1D for training device of the fourth embodiment＞

Referring to Figs. 22 to 24, the structure and operation of the load transfer mechanism 1D for a training device of the fourth embodiment (hereinafter referred to as the load transfer mechanism 1D) are described. Fig. 22 is a diagram for describing the structure of the load transfer mechanism 1D for a training device of the fourth embodiment, Fig. 23 is a diagram for describing the operation of the load transfer mechanism 1D for a training device of the fourth embodiment, and Fig. 24 is a diagram for describing the sliding bearing 14a used in the load transfer mechanism 1D for a training device of the fourth embodiment.

The load transmission mechanism 1D is connected to the first training device 100 and the second training device 201 for use.

The structure of the sliding bearing 14a of the load transmission mechanism 1D is different from the sliding bearing 13a of the load transmission mechanism 1B of the second embodiment. Therefore, the operation of the sliding shaft portion 14 of the load transmission mechanism 1D is different from the sliding shaft portion 13 of the load transmission mechanism 1B. Hereinafter, in the description of the load transmission mechanism 1D, the symbols used in the description of the load transmission mechanism 1B of the second embodiment are assigned in FIGS. 22 to 24 and the description thereof is omitted, and only the structures and operations different from the load transmission mechanism 1B of the second embodiment are described in detail.

Furthermore, the sliding shaft portion 14 of the load transfer mechanism 1D is equivalent to the sliding shaft portion 13 of the load transfer mechanism 1B, and has the same shape as the sliding shaft portion 13, but its movement is different from that of the sliding shaft portion 13.

The sliding bearing 14a supporting the sliding shaft 14 has a bearing hole 14d (see FIG. 24) for inserting the sliding shaft 14 so as to tilt the sliding shaft 14 relative to the axial direction of the crankshaft 6. As shown in FIG. 12, the sliding bearing 13a of the load transmission mechanism 1B for the training device of the second embodiment has a bearing hole 13d formed vertically from the upper surface to the lower surface. On the contrary, the sliding bearing 14a of the load transmission mechanism 1D has a bearing hole 14d tilted from the upper surface to the lower surface.

The sliding shaft portion 14 inserted into the sliding bearing 14a is pulled into the housing portion 22 or protrudes at an angle with respect to the axial direction of the crankshaft portion 6.

The angle between the sliding shaft portion 13 and the crankshaft portion 6 of the load transfer mechanism 1B of the second embodiment is a right angle, but the angle between the center axis of the sliding shaft portion 14 of the load transfer mechanism 1D and the center axis of the crankshaft portion 6 is a blunt angle that is larger than the right angle. Therefore, with respect to the deformation of the connecting joint portion 12 connecting the sliding shaft portion 13 and the crankshaft portion 6 accompanying the rotation or horizontal movement of the crankshaft portion 6, the connecting joint portion 12 of the load transfer mechanism 1D is smaller. Therefore, by adopting the sliding bearing 14a instead of the sliding bearing 13a, the friction and other resistances accompanying the deformation of the connecting joint 12 of the load transfer mechanism 1D become smaller, so that the movement of the load transfer mechanism 1D can be performed more smoothly. Furthermore, since the deformation of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

Furthermore, the sliding bearing 14a of the load transmission mechanism 1D of the fourth embodiment can also be applied to the load transmission mechanism 1A of the first embodiment. When the sliding bearing 14a is applied to the load transmission mechanism 1A, the sliding bearing 14a is installed on the load transmission mechanism 1A instead of the sliding bearing 13a. The sliding shaft 13 of the load transmission mechanism 1A is equivalent to the sliding shaft 14 of the load transmission mechanism 1D, and has the same shape as the sliding shaft 14. When the sliding shaft 13 of the load transmission mechanism 1A is axially supported by the sliding bearing 14a, the sliding shaft 13 performs the same action as the sliding shaft 14.

Therefore, by installing the sliding bearing 14a instead of the sliding bearing 13a, the friction and other resistances accompanying the deformation of the connecting joint 12 of the load transfer mechanism 1A are reduced, so that the operation of the load transfer mechanism 1A can be performed more smoothly. Furthermore, since the deformation of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

Furthermore, the sliding bearing 14a of the load transmission mechanism 1D of the fourth embodiment can also be applied to the load transmission mechanism 1C of the third embodiment. When the sliding bearing 14a is applied to the load transmission mechanism 1C, the sliding bearing 14a is installed on the load transmission mechanism 1C instead of the sliding bearing 13a. The sliding shaft 13 of the load transmission mechanism 1C is equivalent to the sliding shaft 14 of the load transmission mechanism 1D, and has the same shape as the sliding shaft 14. When the sliding shaft 13 of the load transmission mechanism 1C is axially supported by the sliding bearing 14a, the sliding shaft 13 performs the same action as the sliding shaft 14.

Therefore, by installing the sliding bearing 14a instead of the sliding bearing 13a, the friction and other resistances accompanying the deformation of the connecting joint 12 of the load transfer mechanism 1C are reduced, so that the operation of the load transfer mechanism 1C can be performed more smoothly. Furthermore, since the deformation of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

＜Fifth embodiment of load transmission mechanism for training device 1E＞

Referring to Figs. 25 to 28, the structure and operation of the load transfer mechanism 1E for a training device of the fifth embodiment (hereinafter referred to as the load transfer mechanism 1E) are explained. Fig. 25 is a diagram for explaining the structure of the load transfer mechanism 1E for a training device of the fifth embodiment, Fig. 26 is a diagram for explaining the operation of the load transfer mechanism 1E for a training device of the fifth embodiment, Fig. 27 is a diagram for explaining the operation of the sliding shaft portion 15 of the load transfer mechanism 1E for a training device of the fifth embodiment, and Fig. 28 is a diagram for explaining the sliding bearing 15a of the load transfer mechanism 1E for a training device of the fifth embodiment. Fig. 28(a) is a perspective view of the sliding bearing 15a. Fig. 28(b) is a cross-sectional view of the surface of the sliding bearing 15a cut along the cutting plane 15e shown in Fig. 28(a) as viewed from the direction of arrow A.

The load transmission mechanism 1E is connected to the first training device 100 and the second training device 201 for use.

The structure of the sliding bearing 15a of the load transmission mechanism 1E is different from the sliding bearing 13a of the load transmission mechanism 1B of the second embodiment. Therefore, the operation of the sliding shaft portion 15 of the load transmission mechanism 1E is different from the sliding shaft portion 13 of the load transmission mechanism 1B. Hereinafter, in the description of the load transmission mechanism 1E, the symbols used in the description of the load transmission mechanism 1B in the second embodiment are assigned in FIGS. 25 to 28 and the description thereof is omitted, and only the structures and operations different from the load transmission mechanism 1B of the second embodiment are described in detail.

Furthermore, the sliding shaft portion 15 of the load transmission mechanism 1E is equivalent to the sliding shaft portion 13 of the load transmission mechanism 1B, and has the same shape as the sliding shaft portion 13, but its movement is different from that of the sliding shaft portion 13.

In the load transfer mechanism 1E for training equipment (hereinafter referred to as the load transfer mechanism 1E), the sliding bearing 15a supporting the sliding shaft portion 15 has: a first bearing hole 15j, which is inserted orthogonally to the axial direction of the crankshaft portion 6; and a second bearing hole 15k, which intersects with the first bearing hole 15j and is inserted obliquely to the axial direction of the crankshaft portion 6; the sliding shaft portion 15 moves between the first bearing hole 15j and the second bearing hole 15k along with the axial movement of the crankshaft portion 6.

The bearing hole 15d of the sliding bearing 15a has a first bearing hole 15j and a second bearing hole 15k. As shown in FIG. 28(b), the first bearing hole 15j is formed by the upper cylindrical side surface 15f and the lower cylindrical side surface 15g, and the second bearing hole 15k is formed by the upper oblique tapered side surface 15h and the lower oblique tapered side surface 15i.

As shown in Figures 25 to 27, since the first bearing hole 15j and the second bearing hole 15k intersect, the sliding shaft 15 can be transferred between a state of being supported by the first bearing hole 15j and a state of being supported by the second bearing hole 15k. Figures 25 and 27 (a) show a state in which the sliding shaft 15 is supported by the first bearing hole 15j, and Figures 26 and 27 (b) show a state in which the sliding shaft 15 is supported by the second bearing hole 15k.

The sliding shaft 15 is supported by the first bearing hole 15j in a vertical state, and is supported by the second bearing hole 15k in a state of maximum inclination. The sliding shaft 15 is supported by the shaft neck 15m in a state between the vertical state and the state of maximum inclination. As shown in FIG. 28(b), the shaft neck 15m is formed on the boundary between the upper cylindrical side surface 15f and the lower oblique cone side surface 15i, and on the boundary between the upper oblique cone side surface 15h and the lower cylindrical side surface 15g.

When the user's force is not input to the grip portion 11 of the load transmission mechanism 1E, that is, in the initial state of the load transmission mechanism 1E, the portion of the sliding shaft portion 15 protruding to the outside of the housing portion 22 is the longest. In this initial state, the grip portion 11 is in a vertical state and supported by the first bearing hole 15j. In the initial state of the load transmission mechanism 1E, the active shaft portion 4 is located at the rightmost side on the paper of FIG. 25.

Furthermore, by the user's input of horizontal movement or rotation toward the grip portion 11, the sliding shaft portion 15 is gradually pulled into the housing portion 22, and the tilt angle becomes larger. In this state, the active shaft portion 4 is transferred from the support by the first bearing hole 15j to the state of being supported by the shaft neck portion 15m.

Furthermore, by the user inputting horizontal movement and rotation to the grip portion 11, the sliding shaft portion 15 is in a state of maximum inclination, and the support of the sliding shaft portion 15 by the shaft neck portion 15m is transferred to the support by the second bearing hole 15k.

The side plane 151 of the sliding bearing 15a is a plane. The side plane 151 is used to align the position of the sliding bearing 15a. By making the side plane 151 abut against the plane serving as the positioning reference of the sliding bearing 15a, the position and angle of the sliding bearing 15a are determined.

The load transmission mechanism 1E uses the sliding bearing 15a, and the sliding shaft 15 is inclined, so the bending size of the connecting joint 12 can be suppressed. Thereby, since the sliding bearing 15a is adopted instead of the sliding bearing 13a, the resistance such as friction accompanying the deformation of the connecting joint 12 of the load transmission mechanism 1E becomes smaller, so the movement of the load transmission mechanism 1E can be performed more smoothly, and since the deformation amount of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

Furthermore, the sliding bearing 15a of the load transmission mechanism 1E of the fifth embodiment can also be applied to the load transmission mechanism 1A of the first embodiment. When the sliding bearing 15a is applied to the load transmission mechanism 1A, the sliding bearing 15a is installed on the load transmission mechanism 1A instead of the sliding bearing 13a. The sliding shaft 13 of the load transmission mechanism 1A is equivalent to the sliding shaft 15 of the load transmission mechanism 1E, and has the same shape as the sliding shaft 15. When the sliding shaft 13 of the load transmission mechanism 1A is axially supported by the sliding bearing 15a, the sliding shaft 13 performs the same action as the sliding shaft 15.

Therefore, by installing the sliding bearing 15a instead of the sliding bearing 13a, the friction and other resistances accompanying the deformation of the connecting joint 12 of the load transfer mechanism 1A are reduced, so that the movement of the load transfer mechanism 1A can be performed more smoothly. Furthermore, since the deformation of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

Furthermore, the sliding bearing 15a of the load transmission mechanism 1E of the fifth embodiment can also be applied to the load transmission mechanism 1C of the third embodiment. When the sliding bearing 15a is applied to the load transmission mechanism 1C, the sliding bearing 15a is installed on the load transmission mechanism 1C instead of the sliding bearing 13a. The sliding shaft 13 of the load transmission mechanism 1C is equivalent to the sliding shaft 15 of the load transmission mechanism 1E, and has the same shape as the sliding shaft 15. When the sliding shaft 13 of the load transmission mechanism 1C is axially supported by the sliding bearing 15a, the sliding shaft 13 performs the same action as the sliding shaft 15.

Therefore, by installing the sliding bearing 15a instead of the sliding bearing 13a, the friction and other resistances accompanying the deformation of the connecting joint 12 of the load transfer mechanism 1C are reduced, so that the operation of the load transfer mechanism 1C can be performed more smoothly. Furthermore, since the deformation of the connecting joint 12 can be reduced, the wear of the connecting joint 12 can be suppressed.

<Description of Modification Example of Sliding Bearing 15a of Load Transmission Mechanism 1E>

Referring to Fig. 29, the variation of the sliding bearing 15a of the load transmission mechanism 1E is described. Fig. 29 is a diagram for describing the first variation and the second variation of the sliding bearing 15a of the load transmission mechanism 1E for the training device of the fifth embodiment. Fig. 29(a) is a perspective view of the sliding bearing 16a of the first variation, and Fig. 29(b) is a perspective view of the sliding bearing 17a of the second variation.

As shown in FIG. 29( a ), the sliding bearing 16 a supporting the sliding shaft portion 15 of the first variation has a bearing hole 16 d in the shape of an inverted cone.

The sliding bearing 16a of the first modification is different from the sliding bearing 15a in that the bearing hole 15d has a different shape. That is, the bearing hole 16d of the sliding bearing 16a is in the shape of an inverted cone, which is different from the sliding bearing 15a.

The bearing hole 16d has an oblique tapered side surface 16e and a minimum diameter bearing hole 16f at the lower end.

When the sliding shaft 15 is in a vertical state and an inclined state, the sliding shaft 15 is supported by the minimum diameter bearing hole 16f. Moreover, when the sliding shaft 15 is in a maximum inclined state, the sliding shaft 15 abuts against the oblique cone side surface 16e and is supported by the oblique cone side surface 16e and the minimum diameter bearing hole 16f.

As shown in FIG. 29( b ), the sliding bearing 17 a supporting the sliding shaft portion 15 of the second variation has a shaft neck portion 17 g at the center portion in the axial direction.

The sliding bearing 17a of the second variation is different from the sliding bearing 15a in the shape of the bearing hole 15d. That is, the shape of the bearing hole 17d of the sliding bearing 17a is different from that of the sliding bearing 15a in that it has an upper oblique conical side surface 17e and a lower oblique conical side surface 17f, and the shape is similar to a drum.

The shaft neck 17g is formed at the boundary between the upper oblique cone side surface 17e and the lower oblique cone side surface 17f. When the sliding shaft 15 is in a vertical state and an inclined state, the sliding shaft 15 is supported by the shaft neck 17g. Moreover, when the sliding shaft 15 is in a state of maximum inclination, the sliding shaft 15 abuts against the upper oblique cone side surface 17e or the lower oblique cone side surface 17f and is supported by the shaft neck 17g and the upper oblique cone side surface 17e or the lower oblique cone side surface 17f.

The present disclosure is not limited to the above-mentioned embodiments of the load transfer mechanisms 1A, 1B, 1C for training devices and the first training device 100 and the second training device 201 using the load transfer mechanisms, and can be implemented through various other variations or applicable examples as long as it does not deviate from the gist of the present disclosure described in the scope of the patent application.

The structure of the load transfer mechanism for training equipment of the present invention can be summarized as follows. That is, a load transfer mechanism for training equipment is characterized in that it has: an active shaft portion, a grip portion held by a user or a footrest action portion of the user connected to the end portion, and rotates together with the grip portion or the footrest; an intermediate shaft portion, which rotates in conjunction with the rotation of the active shaft portion; a first rotation transfer portion, which is suspended at The driving shaft and the intermediate shaft are connected to each other to transmit the rotation of the driving shaft and the intermediate shaft; the crankshaft is arranged to be orthogonal to the intermediate shaft and rotates about a central axis orthogonal to the central axis of the intermediate shaft; the second rotation transmission part is arranged between the intermediate shaft and the crankshaft to transmit the rotation of the intermediate shaft part and the aforementioned crankshaft part; a fixed component, which fixes the aforementioned active shaft part, the aforementioned intermediate shaft part and the aforementioned crankshaft part; a connecting joint part, which has a plurality of universal joints connected; and a sliding shaft part, one end of which is subjected to tension caused by an external force, and the other end is connected to the aforementioned connecting joint part, and the rotation and axial displacement of the aforementioned crankshaft part are made into displacements in a direction orthogonal to the axial direction of the aforementioned crankshaft part through the aforementioned connecting joint part; and when the aforementioned user rotates or horizontally moves the aforementioned active shaft part through the aforementioned grip part or the aforementioned footrest part, the aforementioned external force applied to the aforementioned sliding shaft part is transmitted to the aforementioned grip part or the aforementioned footrest part through the aforementioned active shaft part.

1A: Load transfer mechanism for training device of the first embodiment 1B: Load transfer mechanism for training device of the second embodiment 1Ba: First variation of load transfer mechanism for training device of the second embodiment 1Bb: Second variation of load transfer mechanism for training device of the second embodiment 1C: Load transfer mechanism for training device of the third embodiment 1Ca: Variation of load transfer mechanism for training device of the third embodiment 1D: Load transfer mechanism for training device of the fourth embodiment 1E: Load transfer mechanism for training device of the fifth embodiment 1K: 1st rotation transmission part 1M: 2nd rotation transmission part 2: Outer housing 3: Inner housing 4, 276: Active shaft 4a, 4b, 23c: Active shaft bearing 4c: Active shaft sprocket 5: Intermediate shaft 5a, 5b, 23d: Intermediate shaft bearing 5c: Intermediate shaft sprocket 5d: Intermediate shaft umbrella gear 6, 9: Crankshaft 6a, 6b, 23e: Crankshaft bearing 6c: Crankshaft umbrella gear 7, 279, 280b: Connecting part 8: Connecting cylinder 10: Transmission chain 11, 260: grip part 11a: grip bar 11b: frame part 12: joint part 12a: 1st joint piece 12b: 1st universal joint 12c: 2nd joint piece 12d: 2nd universal joint 12e: 3rd joint piece 12f: latch 12g: 1st center axis 12h: 2nd center axis 12j: 3rd center axis 12k: 4th center axis 13: sliding shaft part 13a, 14a, 15a: sliding bearing 13b, 14b, 15b: 1st end part 13c, 14c, 15c: 2nd end part 13d, 14d, 15d, 16d, 17d: bearing hole 14: Sliding bearing (4th embodiment) 15: Sliding bearing (5th embodiment) 15e: Cutting surface 15f: Upper cylindrical side surface 15g: Lower cylindrical side surface 15h, 17e: Upper oblique tapered side surface 15i, 17f: Lower oblique tapered side surface 15j: First bearing hole 15k: Second bearing hole 15l: Side plane 15m, 17g: Shaft neck 16a: Sliding bearing (1st variant) 16e: Oblique tapered side surface 16f: Minimum diameter bearing hole 17a: Sliding bearing (2nd variant) 20: Straight guide 20a: First guide 20b: Second guide 20c: Slider 20d: Guide support 22: Shell 23: Connecting and fixing part 23a: First fixing plate 23b: Second fixing plate 30: Connecting plate 40: Universal joint 41: Connecting rod 41a: First through hole 41b: Second through hole 42: Ball joint 100: First training device 110, 210: Seating part 111, 211: Seat 112, 212: Seat support 120, 220, 221: Frame 121: Thigh pressing part 130, 230: Load imparting part 131: Counterweight 132, 232: Counterweight guide pillar 133: Box part 140, 240: Guide pillar 170: Direction conversion guide wheel 180, 280: Tension member 201: Second training device 215: Backrest 222a, 222b: Slide rail 225: Upper shell 231, 241: Shock absorber 250: Lifting and swinging member 251: Shaft 2252: Box-shaped cover 253, 263: Frame 254: Guide part 257: Sliding shaft 262: Back of hand pad 264: Rotating shaft 270: Sliding part 271: Footrest part 272: Bearing 273: Third rotating shaft 274a, 274b: Side plate 275: Connecting plate 277: Upper body 278: Lower body 280a: First tensile member 280c: Second tensile member 280d: Connecting member 285a, 285b, 285d, 285e, 285f, 285g, 285h: Pulley 285c: Movable pulley 290: Load transmission unit 291: Rotation transmission unit 291a, 291b: Sprocket 291c: Chain 291d, 291e: Umbrella gear 292: Crank mechanism unit 292a: Crankshaft 292b: Connecting plate

FIG. 1 is a diagram for explaining the structure of the load transfer mechanism for the training device of the first embodiment. FIG. 2 is a diagram showing the initial posture of the load transfer mechanism for the training device of the first embodiment during the operation. FIG. 3 is a diagram for explaining the operation of the load transfer mechanism for the training device of the first embodiment accompanying the rotation of the active shaft. FIG. 4 is a diagram for explaining the operation of the load transfer mechanism for the training device of the first embodiment accompanying the horizontal movement of the active shaft. FIG. 5 is a diagram for explaining the operation of the load transfer mechanism for the training device of the first embodiment accompanying the rotation and horizontal movement of the active shaft. FIG. 6 is a perspective view of the first training device. FIG. 7 is a front view of the first training device. FIG. 8 is a perspective view of the first use form of the first training device. FIG. 9 is a front view of the first use form of the first training device. FIG. 10 is a perspective view of the second use form of the first training device. FIG. 11 is a front view of the second use form of the first training device. FIG. 12 is a front view for illustrating the internal structure of the load transfer mechanism for the training device of the second implementation form. FIG. 13 is a top view for illustrating the internal structure of the load transfer mechanism for the training device of the second implementation form. FIG. 14 is a diagram for explaining the structure of the load transfer mechanism for the training device of the third embodiment. FIG. 15 is the first diagram for explaining the movement of the load transfer mechanism for the training device of the third embodiment accompanying the rotation and parallel movement of the active shaft. FIG. 16 is the second diagram for explaining the movement of the load transfer mechanism for the training device of the third embodiment accompanying the rotation and parallel movement of the active shaft. FIG. 17 is a three-dimensional diagram of the second training device. FIG. 18 is an enlarged diagram of the footrest of the second training device. FIG. 19 is a side view showing the first state of the second training device in the usage form. FIG. 20 is a side view showing the second state of the second training device in the usage form. FIG. 21 is a side view showing the third state of the second training device in the usage form. FIG. 22 is a diagram for explaining the structure of the load transfer mechanism for the training device in the fourth embodiment. FIG. 23 is a diagram for explaining the operation of the load transfer mechanism for the training device in the fourth embodiment. FIG. 24 is a diagram for explaining the sliding bearing used in the load transfer mechanism for the training device in the fourth embodiment. FIG. 25 is a diagram for explaining the structure of the load transfer mechanism for the training device of the fifth embodiment. FIG. 26 is a diagram for explaining the operation of the load transfer mechanism for the training device of the fifth embodiment. FIG. 27 is a diagram for explaining the operation of the sliding shaft portion of the load transfer mechanism for the training device of the fifth embodiment. FIG. 28 is a diagram for explaining the sliding bearing of the load transfer mechanism for the training device of the fifth embodiment. FIG. 29 is a diagram for explaining the first variation and the second variation of the sliding bearing of the load transfer mechanism for the training device of the fifth embodiment. FIG. 30 is a perspective view showing an example of a universal joint of the load transfer mechanism for a training device of the first embodiment. FIG. 31 is a view for explaining the first variation of the load transfer mechanism for a training device of the second embodiment. FIG. 32 is a view for explaining the second variation of the load transfer mechanism for a training device of the second embodiment. FIG. 33 is a view for explaining the variation of the load transfer mechanism for a training device of the third embodiment. FIG. 34 is a view for explaining the structure of the load transfer mechanism for a training device of the first embodiment.

1A: Load transfer mechanism for training equipment of the first embodiment

1K: 1st rotary transmission unit

1M: 2nd rotary transmission unit

2: External shell

3: Inner shell

4: Active drive shaft

4a, 4b: Active shaft bearings

4c: Drive shaft sprocket

5: Middle shaft

5a, 5b: Intermediate shaft bearings

5c: Intermediate shaft sprocket

5d: Intermediate shaft umbrella gear

6, 9: Crankshaft

6a, 6b: crankshaft bearing

6c: crankshaft umbrella gear

7: Connection part

8: Connecting tube

10: Transfer chain

11: Grip

11a: Grip the stick

11b: Frame

12: Connecting joints

12a: 1st joint piece

12b: 1st universal joint

12c: Second joint piece

12d: 2nd universal joint

12e: 3rd joint piece

12f: Latch

12g: 1st center axis

12h: Second center axis

12j: The third center axis

12k: 4th center axis

13: Sliding shaft

13a: Sliding bearing

13b: 1st end

13c: Second end

30: Connecting piece

40: Universal joint

Claims (15)

A load transmission mechanism for a training device mainly includes: an active shaft, an input portion of the user input force of the active shaft is connected to the end of the active shaft and rotates together with the input portion; an intermediate shaft, the intermediate shaft rotates in conjunction with the rotation of the active shaft; a first rotation transmission portion, the first rotation transmission portion is suspended between the active shaft and the intermediate shaft, and transmits the rotation of the active shaft and the intermediate shaft to each other; The second rotation transmission part is arranged between the intermediate shaft and the crankshaft part orthogonal to the intermediate shaft, and transmits the rotation between the intermediate shaft and the crankshaft part; Inner housing, the inner housing accommodates the active shaft, the intermediate shaft and the crankshaft; Outer housing, the outer housing accommodates the inner housing, and the inner housing moves in the outer housing along the axial direction of the crankshaft; A sliding shaft portion, which is disposed in the outer housing, and which allows displacement in a direction orthogonal to the axial direction of the crankshaft portion, and is applied in a straight direction by an external force; and A connecting joint portion, which has a rotation about a center axis orthogonal to the axial direction of the sliding shaft portion, and rotation in a direction orthogonal to the center axis is allowed by a combination of a plurality of connecting pieces, and one of the connecting pieces is connected to the sliding shaft portion; and The connecting joint part has a connecting piece part different from the connecting pieces connected to the sliding shaft part, and is connected to the crankshaft part so that the rotation of the central axis orthogonal to the axial direction of the crankshaft part is allowed, and the rotation and axial movement of the crankshaft part are converted into the displacement of the sliding shaft part in the up-down direction; when the user moves the active shaft part horizontally through the input part, the external force applied to the sliding shaft part is transmitted to the input part through the active shaft part. A load transmission mechanism for a training device mainly includes: an active shaft, an input portion of the user input force of the active shaft is connected to the end and rotates together with the input portion; an intermediate shaft, the intermediate shaft rotates in conjunction with the rotation of the active shaft; a first rotation transmission portion, the first rotation transmission portion is suspended between the active shaft and the intermediate shaft, and transmits the rotation of the active shaft and the intermediate shaft to each other; a second rotation transmission portion, the second rotation transmission portion is arranged between the intermediate shaft and a crankshaft portion orthogonal to the intermediate shaft, and transmits the rotation of the intermediate shaft and the crankshaft to each other; A connecting and fixing part, which connects the active shaft part, the intermediate shaft part and the crankshaft part, and transmits the rotation of the active shaft part, the intermediate shaft part and the crankshaft part; A sliding shaft part, which allows displacement in a direction orthogonal to the axial direction of the crankshaft part, and applies force in a straight direction by an external force; and A connecting joint part, which has a rotation of a central axis orthogonal to the axial direction of the sliding shaft part, and a rotation in a direction orthogonal to the central axis is allowed by a combination of a plurality of connecting pieces, and one of the connecting pieces is connected to the sliding shaft part; and The connecting joint part has a connecting piece part different from the connecting pieces connected to the sliding shaft part, and is connected to the crankshaft part so that the rotation of the central axis orthogonal to the axial direction of the crankshaft part is allowed, and the rotation and axial movement of the crankshaft part are converted into the displacement of the sliding shaft part in the up-down direction; when the user moves the active shaft part horizontally through the input part, the external force applied to the sliding shaft part is transmitted to the input part through the active shaft part. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the input portion is a grip held by the user or a footrest of the user. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the connecting joint is constructed with a plurality of universal joints connected as main components. A load transfer mechanism for a training device as described in claim 1, wherein the outer shell has a connection portion for connecting to the training device; and the inner shell slides inside the outer shell as the active shaft moves horizontally. The load transfer mechanism for a training device as described in claim 2 further includes a connecting portion for connecting to the training device. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the first rotation transfer portion is a transfer chain; an intermediate shaft sprocket is provided on the intermediate shaft portion; and the transfer chain is suspended between the active shaft sprocket and the intermediate shaft sprocket. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the second rotation transfer portion comprises: an intermediate shaft umbrella gear, the intermediate shaft umbrella gear being disposed on the intermediate shaft portion; and a crankshaft umbrella gear, the crankshaft umbrella gear being disposed on the crankshaft portion and meshing with the intermediate shaft umbrella gear. A load transfer mechanism for a training device as described in claim 3, wherein the gripping portion is a ring. A load transmission mechanism for a training device as described in claim 1 or 2, wherein the external force is generated by a load imparting part that can freely adjust the load size of the training device. A load transmission mechanism for a training device as described in claim 1 or 2, wherein the sliding bearing supporting the sliding shaft has an insertion bearing hole that makes the sliding shaft tilted relative to the axial direction of the crankshaft. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the sliding bearing supporting the sliding shaft has: a first bearing hole, which is inserted orthogonally to the axial direction of the crankshaft portion; and a second bearing hole, which intersects with the first bearing hole and is inserted obliquely to the axial direction of the crankshaft portion; and the sliding shaft moves between the first bearing hole and the second bearing hole accompanying the axial movement of the crankshaft portion. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the sliding bearing supporting the sliding shaft has a bearing hole in the shape of an inverted cone. A load transfer mechanism for a training device as described in claim 1 or 2, wherein the sliding bearing supporting the sliding shaft has a shaft neck in the axial center. A training device, which mainly includes a load transfer mechanism for a training device as described in claim 1 or 2.