JP2006034696A - Muscle strengthening apparatus and muscle strengthening method using the apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a muscle strengthening apparatus and method that help a user unerringly acquire the use of his strength suitable for the form of action for each sports event or the like and a muscle strengthening apparatus applying the basic principle of the apparatus and proving useful in strengthening trunk muscles. <P>SOLUTION: The apparatus is intended for strengthening trunk muscles and has a load mechanism 3 to transmit the exercise of raising the lower limbs done by a user sitting on a seat 7 to a load, and transmits power from the user to the load by the angular displacement of the load mechanism 3 around a rotary shaft 6 by the user by raising his lower limbs. The load is made up of a weight W to which a force from the load mechanism 3 is transmitted through at least one pulley. At least one of the pulleys is a load varying means 2 of a shape expressing necessary power at every moment from the beginning of one action to the end of the action as shown in output characteristics expressing the use of power to be exhibited during one action of the user's exercise of raising the lower limbs by timely varying a distance on a vertical line with respect to an action line where the load of the load acts from the center of rotation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a muscular strength strengthening device for enabling training in accordance with an operation mode for each sporting event, a muscular strength strengthening device suitable for muscular strength enhancement, health management, rehabilitation, etc. of athletes and the general public, and The present invention relates to a method for strengthening muscle strength using such a device.

  As for training devices suitable for muscle strength enhancement, health management, rehabilitation, etc. of athletes and general citizens, there have conventionally been devices using hydraulic or electrical energy in addition to the elasticity of rubber tubes and the load of weights. Literature 1] training machine, [Patent Literature 2] electric resistance load type trunk muscle strength training machine, [Patent Literature 3] training machine load device, [Patent Literature 4] arm strength training device, [Patent Literature 5] Training devices, etc. are known.

  By the way, with recent advances in sports medicine and exercise physiology, it is gradually becoming clear that a truly effective training cannot be realized with a conventional training apparatus. In other words, the more training using a so-called end-load training machine, the more limited the range of motion of the joints, the slower the movement, and the more it leads to fatigue and accidents. Here, the so-called end load training machine is, for example, a training machine that exercises a throwing form by pulling a rubber tube or a machine that uses spring elasticity, so that the load in the initial state of operation is small and the load increases as the operation progresses. The training machine that has the maximum load when reaching the final state of operation. The end load means, for example, when a rubber tube is pulled, the tension or repulsive force, which is the load of the tube, is weak at the beginning of the operation, gradually becomes strong, and becomes strong at the end. On the other hand, the initial load refers to a load characteristic in which a force is applied at the beginning of the operation and then the load gradually decreases (see [Non-patent Document 1]).

  Furthermore, for example, in swimming, it is necessary to exert the maximum force at the moment when the water is scraped, while in the throwing operation, the maximum force is exerted at the beginning of the operation, and after releasing the ball, the force is released. As you can see, each sporting event has a different way of applying force during one movement (hereinafter referred to as “specificity of movement”), and the training device also has load characteristics according to its movement characteristics. It is desirable to do.

  However, in the conventional training device, the load obtained during one operation is all constant or has only linearity, and up to the present, it directly corresponds to the specificity of each sporting event. Thus, no device capable of appropriately changing the load characteristics has been provided. This point will be described below by taking the gazettes listed above as examples.

First, as described above, as a conventional technique related to a training apparatus, there are those using hydraulic pressure [Patent Document 1] and those using electricity in addition to those using elasticity and weight of weight [Patent Document 1]. 2, Patent Document 3]. In the case of using hydraulic pressure or electricity, a load artificially generated using hydraulic pressure or electric energy can be used.
However, these are characterized by being able to train with a constant load or an equi-viscous load, in other words, the end load is also large. There is a risk of adverse effects. Furthermore, in most cases, it is not possible to cope with the peculiarities of all operation modes only by applying a linear load as in the prior art.

Next, there is a training apparatus that recognizes the adverse effects caused by a large final load and solves this problem, such as those disclosed in [Patent Document 4] or [Patent Document 5]. .
However, it is only intended to eliminate the negative effects of the end load training machine such as a so-called rubber tube machine that has the maximum end load in the final stage of operation.

In addition, there is a training apparatus configured for the purpose of uniformly applying a load to the user in the entire range of motion regardless of the joint angle. As exemplified in [Patent Document 6], all of these utilize a cam or a pulley that is appropriately deformed from a perfect circle shape to wind up a rope that pulls up a weight serving as a load.
However, these devices are intended to provide the same load throughout the entire range of motion, and inevitably end loads remain. Obviously, these devices are not constructed with a focus on the uniqueness of the mode of operation.

Thus, until now, there has been no training device designed in consideration of the characteristics of each sporting event and the like.
Recently, there are examples of using the above-mentioned various training devices for the purpose of rehabilitation and the maintenance of muscle strength of the elderly, but even in this case, the user can perform more effective rehabilitation or muscle strengthening exercises. In order to perform this, it is required that an appropriate load characteristic is realized according to the circumstances of each user.
JP 2000-176045 A JP 2002-17878 A JP 2000-14825 A JP-A-10-137360 JP-A-10-113405 U.S. Pat. No. 4,387,893 "Sport Physiology to Win", Isao Nemoto, published by Sankai-do Co., Ltd., September 30, 1999

Accordingly, an object of the present invention is to learn how to apply force more quickly, to reach a high level in various eyes earlier, or to efficiently perform rehabilitation.
In other words, the present invention is a power output characteristic in one operation, such as “in which stage of operation should the power be concentrated and in which stage it is better not to apply power” and other sports items. To provide a muscular strength strengthening device that allows a user to easily and surely learn how to apply force according to the behavior of each sport, and that is compatible with the specificity of the behavior of any sport Is an issue.

  In addition, the present invention makes it possible to learn how to put out power according to the peculiarities of various sports and other sporting styles. It is also an object of the present invention to achieve remembering. Alternatively, it is an object of the present invention to efficiently and objectively teach how to improve a person who will start sports or the like from now on. If you can remember where to apply force and where to put it into your body, you can avoid applying unnecessary force, and you can exert your power when needed, in a comprehensive and efficient manner.

  As a result of intensive studies to obtain a muscular strength strengthening device that can solve the above-mentioned problems, the present inventor found that "from the beginning to the end of one operation, the rotation of the load changing means described in detail later or the angular displacement of a predetermined range. In addition to expressing the change, the change in load applied to the user is expressed by appropriately changing the change in rotational moment, that is, by changing the distance on the normal to the action line where the load of the load is applied from the rotation center of the load changing means. The present invention was completed by finding that the above-mentioned problems can be solved by using the muscular strength enhancing device having the following configuration.

  The muscle strength strengthening device of the present invention that can solve the above problems is (1) a device for performing muscle training or rehabilitation by applying a predetermined load to a user, and the force applied from the user is at least 1. It is configured to be transmitted to the predetermined load via two pulleys, and at least one of the pulleys outputs a force that should be exerted during one operation of a sport event or the like that is prepared in advance and that is to be trained. The necessary force for each moment from the beginning of the one operation to the end of the operation shown in the output characteristics representing the direction is appropriately changed from the rotation center to the perpendicular line to the action line where the load of the load acts. The load change means has a shape represented by f × r = constant (where f is a force and r is a load load from the rotation center of the load change means. Is characterized in being manufactured are identified from the perpendicular on the distance) the relationship to the action lines.

In addition, as shown in the following examples, the present invention is (2) a device for strengthening the psoas major muscles and other trunk muscle groups, which enables the user to perform a heel exercise while sitting. A seat, a load mechanism for transmitting a motion of raising a lower limb performed by the user sitting on the seat to a predetermined load, and mechanically connected to the load mechanism, and the kinetic energy of the user from the load mechanism A load that receives the force from the user, an arm that couples the pad, and the arm to the seat. A rotation shaft for supporting the rotation of the load mechanism, and when the user raises a lower leg and angularly displaces the load mechanism around the rotation shaft, a force from the user is applied to the load. Configuration to be transmitted to And it is characterized in that they are.
(3) The arm may further include a second pad that is brought into contact with the toe of the user or the back of the foot and receives a force from the user via a predetermined extension member. good.

  In the muscular strength strengthening device of the present invention (2) or (3), (4) the load comprises a weight to which a force from the load mechanism is transmitted through at least one pulley, Necessary for every moment from the beginning of the one operation to the end of the operation, at least one of which is shown in an output characteristic indicating how to exert the force that the user should exert during one operation of raising the lower limb It is preferable that the load change means has a shape expressed by appropriately changing the distance on the perpendicular to the action line on which the load is applied from the center of rotation.

Furthermore, the muscular strength strengthening method of the present invention capable of solving the above-mentioned problems is (5) a method for allowing a user to perform muscle training or rehabilitation by changing the increase or decrease in load,
An output characteristic indicating how to exert the force to be exerted during one operation such as a sporting event to be trained is prepared in advance, and the time point from the beginning of the one operation to the end of the operation indicated in the output characteristic The load change means having a shape expressed by appropriately changing the distance on the perpendicular to the action line on which the load of the load acts from the center of rotation is expressed as f × r = constant (where f is The force r is specified by using the relationship of the distance from the rotation center of the load changing means to the perpendicular to the action line on which the load is applied, and a predetermined load is applied to the user wearing the load changing means. Using a predetermined training device that performs muscle training or rehabilitation by giving the exercise while changing the load increase / decrease according to the output characteristics. It is intended to.

  The muscular strength strengthening device of the present invention (1) can be used for training of various sports events. For example, the muscle strength strengthening device of the present invention gradually increases muscle output after catching water, like swimming pull (watering by hand), and shows the peak of muscle strength from the middle to the end of the movement. After greeting, at the end of one movement, muscle output is hardly generated at the end of one movement. It can be used for training for events with heavy loads. In addition, the muscular strength strengthening device of the present invention can be applied to rehabilitation such as injured persons.

In most conventionally known training apparatuses, the load obtained during one operation is gradually increased in a constant or linear proportion. However, in the load changing means used in the muscular strength strengthening apparatus of the present invention, the load of the load is applied from the rotation center. The load applied to the user (for example, the pulling torque of the weight) changes according to the distance on the perpendicular to the working line of action, so that training that matches the output characteristics of each eye can be performed according to the specific behavior. . The load applied to the user can be varied anyway by designing and producing load changing means of various shapes as required.
Since the present invention is not affected at all by the use or form of the training machine equipped with the load changing means, and is not subject to any limitation, the applicability is extremely large.

In the present invention, the term “load” refers to a device that applies a certain resistance to the user to train muscles, and includes weights that move up and down. For example, if the training device generates a constant load by hydraulic pressure, the resistance obtained by the hydraulic pressure, and if the training device generates a constant load by electric brake, the electric brake is turned on. For example, a resistance force obtained sometimes, and a resistance force obtained in a state where an input current is passed to the exciting coil in the case of a training device that generates a constant load by a powder clutch.
In the present invention, “change in load increase / decrease” refers to a so-called “on” state of the load in which the user of the training device is in a state of resistance. In addition to the “off” state of the load, it also includes a state where the load gradually increases or decreases with time.
In the present invention, the “weight” refers to what is commonly referred to as a so-called “weight” found in a training machine installed in a sport club or the like in the city, and the use of an artificial weight or a training device. The weight of a person, including the person himself, shall also be said.
In this specification, “up and down” of the weight is composed of only the vertical component, and includes moving up and down in an oblique direction, including the horizontal component in addition to the vertical component, in addition to moving up and down in the vertical direction. Shall.
In the present invention, the “output characteristic” refers to an ideal state or a standard state of how to exert force during one operation period in a specific sport event or the like.
In this specification, “rotation” indicates not only one rotation, ie, 360 ° rotation, but also a predetermined range of angular displacement.
In this specification, the “lower limb” indicates the entire leg portion from the lower back to the lower end.
In the present invention, the “muscle strengthening device” naturally includes the concept of “training device” or “training machine”. Any of the above-mentioned “muscle strengthening device”, “training device” or “training machine” can be used not only for strength training of athletes but also for health promotion of the general public and rehabilitation of injured and elderly people, etc. It is obvious. Therefore, even if the term “training apparatus” is used in this specification, the use of the apparatus of the present invention is not limited by these terms.
In the present invention, the “load changing means” refers to an apparatus or an instrument in which the load changes variously as exemplified in the following embodiments and examples.
In the present specification, the “action line” indicates a straight line obtained by extending a line segment drawn in the direction in which the force is applied from the force application point infinitely on both sides.
In the present invention, the “load mechanism” refers to a mechanical configuration that converts a force from the user into a force acting on the load. In addition to the configurations shown in the following embodiments, the force from the user is optimal. It shall point to a device or instrument that communicates to the load changing means in the state.

By using the muscular strength strengthening device of the present invention, it is possible to make the user remember how to apply force according to the peculiarities of the behavior modes of all sports and the like. Therefore, it is possible to make athletes who have been thinking that no result has been obtained even if they make efforts until now be learned how to put out efficient power. On the other hand, it will be possible to efficiently teach how to improve even those who start sports.
Further, by using the muscular strength strengthening device of the present invention, it is possible to make the user's own body remember the place where the force is applied, “where to apply force”. This allows the user to exert power only when necessary. Therefore, the user can efficiently carry out the desired muscle strengthening exercise, and does not need to spend unnecessary power.

The muscle strengthening device of the present invention is applicable not only to the above-described muscle strength training for athletes but also to various fields such as application to rehabilitation, and the possibilities are infinite. That is, according to the present invention, it is possible to cause the user to perform effective rehabilitation or muscle strengthening exercise by preparing the load changing means according to the circumstances of each user.
For example, as described in the following examples, even if the elderly person trains muscles necessary for walking motion, by preparing the load changing means to reduce the end load, the user's The burden on the joint and the increase in blood pressure can be reduced or suppressed.
When the present invention is used for rehabilitation of the upper and lower limbs of a paralyzed patient, for example, by preparing a load changing means so that the end load remains, the stimulation is spread more in the user's nerves and muscles. The present invention can also be used for so-called facilitation therapy for paralyzed patients.
In addition, the form which prepares several load change means from which a shape differs, and switches and uses for every item is also considered.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, the present invention will be described in detail with reference to the accompanying drawings.
In describing the present invention, first, the basic operation principle of the present invention will be described using the basic examples shown in FIGS. 1 to 7, and then one embodiment of the muscular strength strengthening apparatus constructed by actually applying this principle will be described. An example will be described with reference to FIGS. 1 to 6 are diagrams showing the basic operation principle of the present invention, and FIG. 7 is a diagram showing another embodiment of the present invention.

[Basic operating principle]
First, consider a device in which the load changes variously in one continuous operation using a simple example.
First, the following description is based on the apparatus having the configuration shown in FIG. 1A. In the apparatus shown in FIG. 1A, a circular pulley S1 having a radius R and a non-circular pulley S2 are arranged on the same axis (A), and a weight W hung from the pulley S2 using a rope C is wound around the pulley S1. It is a device that pulls up by pulling another cable.

When the load by the weight W is F, the force pulling the strip C of the pulley S1 is f, and the distance between the line of action on which F acts and the axis A of the pulley S2 is r, the moment on the concentric axis A of the two pulleys is The following is considered. Of course, the distance r here is the shortest distance, and is the distance on the perpendicular to the line of action of the force F from the rotation center point of the pulley S1. The same applies to the following descriptions.
F × r−f × R = 0 (Equation 1)
f = (F × r) / R (Equation 2)
Here, since F and R are constant, it can be seen that the force f pulling up the weight W varies depending on the value of r. Therefore, now consider the relationship between the shape of the pulley S2 and r.

Hereinafter, as shown in FIG. 1B, consider a device in which a weight W is attached to a rod B having a length L, for example, instead of the pulley S2.
Assuming that the initial state is the state shown in FIG. 1B-1, the distance r on the perpendicular to the action line where the load F acts from the axis A at that time is zero.
On the other hand, as shown in FIG. 1B-2, in the state where the rod B is rotated about the axis A by the angle θ by applying the force f, r = L × sin θ, so the rotation angle θ from the initial state of the rod is The relationship with the force f balanced at that time is as shown in FIG. 1C.
f = (F × L × sin θ) / R (0 ° ≦ θ ≦ 180 °) (Equation 3)

Next, as shown in FIG. 2A, instead of the pulley S2, rods B1 and B2 having a length L are fixed with an angle of 120 [deg.] About the axis A (hereinafter, a configuration replacing the pulley S2 in this way). The thing prepared as a thing is called load changing means). As shown in FIG. 2A-1, the initial state is when the bar 1 is vertically downward. FIG. 2A-2 shows a state where the load changing means (B1, B2) is rotated 120 ° counterclockwise from the initial state.
As shown in FIG. 2A-3, it can be seen that when the load changing means (B1, B2) is rotated 150 ° counterclockwise from the initial state, the rope C is also applied to the bar B2. Further, when the load changing means (B1, B2) is rotated counterclockwise to the state shown in FIG. 2A-4, the rope C hanging between the rods B1 and B2 has T and T ′ respectively. Power will work. Here, since T and T ′ are forces in the opposite directions on the same line of action, they do not affect the balance of moments about the axis A.
Therefore, when the load changing means (B1, B2) is rotated by 150 ° or more counterclockwise, the influence of the bar B1 is ignored, and there is one bar B2 at the position of the angle θ ′ from the vertical downward direction of the bar B2. It is good to think in the same way. Therefore, the relationship between the rotation angle θ of the bar B1 and f is as shown in FIG. 2B.
When 0 ° ≦ θ ≦ 150 ° f = (F × L × sin θ) / R (Equation 4)
When 150 ° ≦ θ ≦ 300 ° f = (F × L × sin θ ′) / R (Equation 5)

Next, as shown in FIG. 3A, a case where a rod B1 having a length L and a rod B2 having a length 2L are fixed with an angle of 60 ° about the axis A is considered similarly. As shown in FIG. 3A-1, the initial state is when the bar B1 is vertically downward. As shown in FIG. 3A-2, it can be seen that when the load changing means (B1, B2) is rotated 90 ° counterclockwise from the initial state, the rope C is also applied to the bar B2. When the load changing means (B1, B2) is further rotated counterclockwise to the state shown in FIG. 3A-3, the bar is positioned at an angle θ ′ from the vertical downward direction of the bar B2, as in the example of FIG. It can be considered in the same way as there is one B2. Therefore, the relationship between the rotation angle θ of the bar B1 and f is as shown in FIG. 3B.
When 0 ° ≦ θ ≦ 90 ° f = (F × L × sin θ) / R (Equation 6)
When 90 ° ≦ θ ≦ 240 ° f = (F × 2L × sin θ ′) / R (Equation 7)
In this way, if load changing means configured by various combinations of the length of the bar B and the angle at which the plurality of bars B are fixed to each other is used, the load can be changed variously in one continuous operation.

However, since the weight W moves in the horizontal direction in each of the above examples, the weight W may be shaken. Therefore, in the following, let us consider a case where the pulleys S1 and S2 are interchanged so that the weight W does not move in the horizontal direction.
As shown in FIG. 4A, considering the balance of moments about axis A,
f × r−F × R = 0 (Equation 8)
f = (F × R) / r (Equation 9)
This time, f changes depending on the value of 1 / r. Therefore, consider a case where a rod B having a length L is provided instead of the pulley S2. For simplicity, the pulley S1 (and the distance R) is omitted in the following description and drawings.

As shown in FIG. 4B-1, the initial state is when the bar B is in the vertically upward direction. However, in this case, since the distance r on the perpendicular to the action line on which the load F acts from the axis A becomes 0 and f becomes a value that is not defined, it is necessary to slightly angle the bar B by some method. To do.
On the other hand, as shown in FIG. 4B-2, in the state where the rod B is rotated about the axis A by the angle θ by applying the force f, r = L × sin θ, so the rotation angle θ from the initial state of the rod is The relationship with f balanced at that time is as shown in FIG. 4C.
f = (F × R) / (L × sin θ) (0 ° <θ <180 °)
... (Formula 10)

Next, as shown in FIG. 5A, instead of the pulley S2, the rods B1 and B2 having a length L are fixed with an angle of 120 ° about the axis A as in the above case.
As shown in FIG. 5A-1, one end of the rope C is tied to the bar B2, and the initial state is when the bar B1 that hooks the rope C is in the vertically upward direction. FIG. 5A-2 shows a state where the load changing means (B1, B2) is rotated 120 ° counterclockwise from the initial state. Also at this time, as in the example of FIG. 2, the influence of the bar B2 can be ignored. As shown in FIG. 5A-3, it can be seen that when the load changing means (B1, B2) is rotated 150 ° counterclockwise from the initial state, the rope C is just detached from the bar B1. Further, when the load changing means (B1, B2) rotates counterclockwise to reach the state shown in FIG. 5A-4, the bar is positioned at an angle θ ′ from the vertical upward direction of the bar B2, as in the example of FIG. It can be considered in the same way as there is one B2. Therefore, the relationship between the rotation angle θ of the bar B1 and f is as shown in FIG. 5B.
When 0 ° ≦ θ ≦ 150 ° f = (F × R) / (L × sin θ) (Equation 11)
When 150 ° ≦ θ ≦ 300 ° f = (F × R) / (L × sin θ ′) (Equation 12)

Further, as shown in FIG. 6A, a case where a rod B1 having a length L and a rod B2 having a length 2L are fixed with an angle of 60 ° around the axis A is considered similarly. As shown in FIG. 6A-1, the initial state is when the bar B1 is vertically upward. As shown in FIG. 6A-2, it can be seen that when the load changing means (B1, B2) is rotated 90 ° counterclockwise from the initial state, the rope C is just removed from the bar B1. When the load changing means (B1, B2) is further rotated counterclockwise to the state shown in FIG. 6A-3, the bar is positioned at an angle θ ′ from the vertically downward direction of the bar B2, as in the example of FIG. It can be considered in the same way as there is one B2. Therefore, the relationship between the rotation angle θ of the bar B1 and f is as shown in FIG. 6B.
When 0 ° ≦ θ ≦ 90 ° f = (F × R) / (L × sin θ) (Equation 13)
When 90 ° ≦ θ ≦ 240 ° f = (F × R) / (L × sin θ ′) (Equation 14)
In accordance with the above basic operation principle, according to the present invention, it is possible to provide an apparatus in which the load varies in a single continuous operation.

In the above description, combinations of pulleys and rods that are not circular are listed as an example of the load changing means. However, the load changing means is not limited to the above-described configuration, and may be a triangle, a square, other polygons, for example, It can be of a deformed shape prepared by a simple process.
Hereinafter, an example of a process for determining the shape of the load changing means according to the present invention will be described with reference to FIG. Here, FIG. 7A is a diagram showing an example of a technique for determining the shape of the load changing means, and FIG. 7B is an output characteristic diagram showing an example of how to exert an ideal force required when performing a certain operation. FIG. 7C is a diagram showing an example in which load changing means is created in accordance with the output characteristics of FIG. 7B.

i) Grasping the output characteristics of the event First, if training of athletes related to a specific event is performed, the output characteristics of the sport event to be trained are grasped. On the other hand, if a specific muscle is trained using a training machine, the optimal point at which the user should give up the power in each training machine and the characteristics of the force that the user should exert before and after that are grasped. Here, some of the events have not yet been clarified in terms of output characteristics that express how to exert force during one movement. Use research results such as (biomechanics) to clarify the output characteristics. Or you may find from a book etc. In any case, a standard one in one operation is suitable.

ii) Producing load changing means in accordance with output characteristics Next, production of load changing means is started in accordance with the grasped output characteristics.
FIG. 7A shows an example of a technique for specifying the shape of the load changing means. This is because when a weight W having a predetermined mass is lifted using a pulley having a radius R (the force generated on the cable C is F), the outer diameter (or distance) of the load changing means 2 connected coaxially with the pulley. This indicates that the required force (torque) is different in magnitude. For example, when R = 10 cm and F = 25 kgw, the relational expression at this time is 10 (cm) × 25 (kgw) = f × r (f is a force (kgw), r is a load F from the rotation center of the load changing means. Is the distance (cm) on the perpendicular to the action line on which. In the example shown in FIG. 7A, the manner in which the load applied to the user changes is the same as the basic operation principle described in FIG.

By using the above configuration and the relational expression, it is possible to derive the outer diameter (the distance from the rotation center to the outer periphery) of the load changing means corresponding to the force required at a certain moment during one continuous operation. Therefore, the shape of the load changing means 2 can be specified by sequentially obtaining the distance from the rotation center to the outer periphery of the load changing means corresponding to the force required for each moment in the output characteristics from the beginning to the end of one operation. At this time, whether the operation from the beginning to the end is regarded as an angle range of 0 to 360 ° of the load changing means 2 or a predetermined angle range depends on the structure of the training apparatus to which the load changing means 2 is applied, etc. This is a matter that can be appropriately selected depending on the situation.
For example, the output characteristics shown in FIG. 7B indicate that a load is applied in the initial stage of the operation and that the load is gradually removed in the second half. FIG. 7C shows this as load changing means. Such output characteristics apply to events and exercises with a large initial load such as jumping, throwing or pitching. In the example of FIG. 7C, the angle range of 0 to 360 ° of the load changing means 2 is considered from the beginning to the end of one operation.
In the example shown in FIG. 7A, the rope wound around the load changing means 2 is configured to follow the outer periphery of the load changing means 2. The output characteristics shown in FIG. 7B can be realized without using the load changing means having the shape shown in FIG. 7C. For example, the output characteristics shown in FIG. 7B can also be realized by load changing means composed of bars or the like combined in accordance with the concept of the embodiment described with reference to FIGS.

iii) Mounting on the machine The load changing means created by the above method is applied to, for example, a training machine installed in a sports club or the like in the city, or a muscle strengthening device as introduced later in [Example 1]. Thereby, the apparatus from which load changes variously in one continuous operation | movement can be provided. In addition, as a method of applying the load changing means, the load changing means is mounted at a predetermined mounting angle instead of or on the same axis as the pulley provided for lifting the weight that is a load in the conventional apparatus. All you need is enough. Alternatively, the load changing means may be directly connected to the rope that pulls up the weight serving as a load at a predetermined mounting angle, and the weight may be pulled up using the load changing means.

  As described above, according to the above method, it is possible to easily and accurately produce a load changing unit suitable for a sport item or a muscle type to be trained without requiring special experience. Of course, it is easy to carry out training using this, and the effect is outstanding.

Next, an embodiment of a muscular strength strengthening device configured by applying the basic principle of the present invention described above will be described with reference to FIGS.
FIG. 8 is a perspective view showing an embodiment of the muscular strength strengthening device of the present invention, and FIGS. 9 to 11 are views, a side view, and a front view showing a usage state of the muscular strength strengthening device of FIG.

This example is for muscle training of athletes, rehabilitation for injured and elderly people, etc. Muscles deep in the trunk such as the lumbar vertebrae, pelvis and thighbone, and the iliopsoas muscle (trunk) In addition to the muscle group, the anterior tibial muscle in the shin portion can be easily strengthened and a muscle strengthening device having a simple structure is provided.
Here, it has recently been clarified that the psoas muscle supports the body and plays the most basic role in performing basic exercise. In recent years, the necessity of strengthening has been emphasized. It is what. In particular, after it became clear that training the psoas muscle was effective in preventing falls, it was strongly desired to develop a trunk muscle group strengthening device suitable for bedridden prevention for the elderly and rehabilitation for the injured. It is rare. In recent years, there is a view that it is useful to train both the psoas major and anterior tibialis muscles, which are important muscles for walking, that is, raising the knees and toes. Has been.
However, there are few known strength strengthening devices that are suitable for strengthening trunk muscles such as the psoas major muscles, and even the proposed one has a complicated structure, There were no appropriate ones such as an unnatural posture (Japanese Patent Laid-Open No. 2004-147908) and a load that does not give a load to the user (Japanese Patent Laid-Open No. 2004-73289). In addition, no muscle strength strengthening device that can efficiently strengthen the trunk muscle group and the anterior tibial muscle simultaneously in one operation has been provided.
Therefore, this embodiment provides a muscle strength strengthening device that can easily reinforce the trunk muscle group and can simultaneously reinforce the anterior tibial muscle as necessary.
The muscular strength strengthening device according to the present example is configured by applying the basic operation principle of the device in which the load changes variously in one continuous operation, which is described in detail in the above embodiment.
There are conventionally known training devices called leg extensions and leg curls, but these are merely operations on the machine that extend or bend the knee joint. Therefore, the muscular strength strengthening apparatus according to the present embodiment is novel and useful in its basic configuration itself, which has a markedly different use and function.

[Constitution]
As shown in FIGS. 8 to 11, the muscular strength strengthening device 1 according to the present embodiment includes a seat 7 for allowing the user U to perform a heel motion while sitting, and a thigh H performed by the user U sitting on the seat 7. And a toe T (including the instep part of the foot, the same applies hereinafter), a load mechanism 3 for transmitting a motion to raise a predetermined load, and mechanically connected to the load mechanism 3. It is mainly composed of loads that receive energy.
In this embodiment, the load is a weight W, which is mechanically connected to the load mechanism 3 via the ropes 22 and 22 ', the load changing means 2 and the pulleys 19 and 19'.

The seat 7 is coupled to the bottom portion of the seat surface 12 via a base 11 that serves as a foundation for fixing the muscle strengthening device 1 of the present embodiment to the floor, a seat surface 12 that is secured to the upper end of the base 11, and a connecting portion 14. The back 13 includes a back 15 and a grip 15 that protrudes from the left and right ends of the back 13 toward the front so that the user U can easily grip the back.
As shown in FIG. 9, the position of the backrest 13 can be adjusted appropriately according to the physique of the user U by changing the mounting position of the connecting portion 14 with respect to the seat surface 12.
In the muscular strength strengthening device 1 according to the present embodiment, the user U can hold the lower body with the thigh H and the toe T with the load mechanism 3 while holding the upper body with the back 13 and the grip 15. Therefore, the user can reinforce the trunk muscle group and the anterior tibial muscle in a stable posture by performing an exercise of raising the entire lower limbs seated on the seat 7 while applying a load.

  The load mechanism 3 makes the first and second pads 4 and 5 and the first and second pads 4 and 5 receive the force from the user by contacting the thigh H and the toe T of the user U as appropriate. The left and right first and second arms 8 and 9 provided to fix the position, the connecting portion 10 for connecting the left and right first arms 8, and the left and right first arms 8 are seated. 7 and a rotating shaft 6 for rotatably supporting the shaft 7.

The first and second pads 4 and 5 are cylindrical members configured by covering a flexible layer made of, for example, urethane around the respective mounting shafts 16 and 17.
In this embodiment, the mounting shaft 16 of the first pad 4 is bent in an L shape, and the tip opposite to the side on which the pad is provided can be inserted into the upper end of the first arm 8 and fixed. It is configured to be able to do it. The second pad 5 is attached by inserting an attachment shaft 17 into an elongated attachment hole provided in the second arm 9.
As shown in FIG. 9, the first and second pads 4 and 5 are appropriately adjusted in position according to the physique of the user U so that the user's U thigh H and toe T are brought into contact with the outer peripheral surface thereof. It is configured to be able to do it.

  As shown in FIGS. 8 to 10, in the present embodiment, the first and second arms 8 and 9 on the left and right sides are integrally formed to form a letter C in a side view. Here, the central portion of the first arm 8 is carried by the rotating shaft 6 provided at the lower portion of the seat surface 12 of the seat 7 and is rotatably attached to the lower portion of the seat surface 12 of the seat 7. . In an initial state in which the user U does not raise the thigh H and the toe T, the first arm 8 is attached in a state of obliquely crossing the seating surface 12 in a side view as shown in FIGS. On the other hand, the second arm 9 is attached so as to protrude forward from between the attachment shaft 6 of the first arm 8 and the upper end.

With respect to the load mechanism 3, in the present embodiment, the left and right first arms 8 are coupled by a connecting portion 10 and are configured integrally with both legs. Further, the ropes 22 and 22 ', the load changing means 2 and the pulleys 19 and 19' from the load mechanism 3 to the latter stage of the weight W are configured so that one set is installed per one muscle strengthening device.
That is, in the present embodiment, the configuration in which the thigh H and the toe T are raised to rotate the load mechanism 3 is shared between the left and right. Therefore, in the configuration of the present embodiment, even when the thigh H is raised by the left and right legs one by one, the load mechanism 3 configured integrally with both legs is rotated.

Next, the configuration between the load mechanism 3 and the load (weight W) will be described with reference to FIGS.
First, the connecting portion 10 at the rear end of the load mechanism 3 is connected to the pulley 19 via the rope 22. One end of the rope 22 is connected to the connecting portion 10 and the other end is connected to the pulley 19. The pulley 19 is provided in the vicinity of the upper part of the connecting portion 10 and is supported by the shaft 20. As shown in FIGS. 10 and 11, load changing means 2 is provided coaxially with the pulley 19. The load changing means 2 is connected to the weight W via another rope 22 '. The rope 22 'extends in the horizontal direction from one end connected to the load changing means 2, extends downward through the pulley 19', and is connected to a weight W on the other end.
Here, as shown in FIG. 10A, the other end side of the rope 22 is wound around the outer circumference of the pulley 19 when no tension is applied to the rope 22. On the other hand, the rope 22 'is only connected to the load changing means 2 at one end, and the rope 22' is not wound around the outer circumference of the load changing means 2 (see FIGS. 10A and 10B). . Therefore, in this embodiment, if the connecting portion 10 is moved downward and the rope 22 is pulled, the pulley 19 and the load changing means 2 rotate at a predetermined angle from the initial state (starting point) and at the same time, the rope 22 'becomes the load changing means. 2 is wound up on the outer periphery of 2, and the weight W is pulled upward.

  The load changing means 2 is configured in the embodiment shown in FIG. 10B in the present embodiment, and is rotatable within a range of approximately 65 ° from the start point. The outer diameter of the load changing means 2 is gradually increased from the start point, and after passing through the maximum point, the outer diameter is gradually decreased to reach the maximum rotation angle. According to an example, the point where the outer diameter is maximum is set to a point rotated about 10 ° from the start point. When the maximum value of the outer diameter is 10, the outer diameter at the start point and the maximum rotation angle (a point rotated approximately 65 °) is set to about 8.

[Operation]
Below, it demonstrates with operation | movement of the muscular strength reinforcement apparatus of a present Example which consists of the said structure.
The force applied to the load mechanism 3 by the user U is transmitted to the load changing means 2 provided coaxially with the pulley 19 via the rope 22 and the pulley 19. One end of the rope 22 ′ is connected to the load changing means 2, and at the same time the load changing means 2 rotates a predetermined angle from the initial state (start point), the rope 22 ′ is wound on the outer periphery of the load changing means 2. Then, the weight W is pulled upward. Therefore, the load when the user U raises the load mechanism 3 changes according to the outer diameter of the load changing means 2.

  In the present embodiment, the manner in which the load changes conforms to the basic operation principle described with reference to FIG. The load characteristics applied to the user U are as described below.

That is, at first, a light load is started, and the user U can raise the load mechanism 3 without applying much force. When the user U reaches an angle range in which the load mechanism 3 can be easily rotated, the load applied to the user U gradually increases. After passing through the point where the load applied to the user U becomes maximum, the load applied to the user U gradually decreases, so that the user U can raise the load mechanism 3 to the maximum movable range without applying much force. It has become.
Thus, in the muscular strength strengthening device 1 of the present embodiment, the load changing means 2 is formed so that the final load is reduced. If the final load is small, the user does not have to work to the end and does not exert unnecessary power. At the same time, according to the present embodiment, the user does not have to exert force until the end, so that it is possible to reduce the contraction (co-contraction) to other muscles that do not need to be contracted, and to prevent adverse effects such as an increase in blood pressure. The further effect that it can prevent is also acquired.

As described above, according to the present embodiment, the user can raise and lower the weight through the load mechanism only by raising the thigh and toe while sitting. Therefore, you can exercise in a natural posture.
The apparatus of this embodiment further includes a second pad in addition to the first pad. Therefore, according to the apparatus of the present embodiment, the anterior tibial muscle can be trained simultaneously with the trunk muscle group, and the muscles necessary for the walking motion can be trained as necessary and more than enough to prevent falls.
In addition, according to the present embodiment, it is possible to provide an apparatus in which the load changes variously in a series of operations in which the user raises the thighs and toes. At this time, the degree of load applied to the user can be adjusted only by changing the shape of the load changing means 2.
As described above, by using the apparatus of this embodiment, the user can easily reinforce the anterior tibial muscle in addition to the trunk muscle group.

  The muscle strength strengthening device for strengthening the psoas muscle and other trunk muscle groups is not limited to the configuration described in the first embodiment, and may be configured as follows, for example. Hereinafter, a description will be given based on FIGS. FIG. 12 is a view showing another embodiment of the muscular strength strengthening device of the present invention, in which A is a front view and B is a left side view. FIG. 13 is a diagram showing the right side surface of the muscular strength strengthening device of FIG. 12, in which A is the initial state of the load mechanism, and B is the state when the thigh and toes are raised and the load mechanism is rotated to the maximum rotation angle. FIG. FIG. 14 is a diagram showing an example of load changing means.

[Constitution]
As shown in FIGS. 12 and 13, the muscular strength strengthening device 1 of the present embodiment is also mechanically connected to the seat 7, the load mechanism 3, and the load mechanism 3 as in the first embodiment, and the user U exercises from the load mechanism. It consists mainly of loads that receive energy. In the present embodiment, all the components of the muscular strength strengthening device 1 are assembled in advance on the frame 21 fixed to the floor. The load connected to the load mechanism 3 is a weight W, and is mechanically connected to the load mechanism 3 via the load changing means 2, the rope 22, and the pulleys 19 and 19 ′.

  The seat 7 includes a base 11 having a lower end coupled to the frame 21, a seat surface 12 fixed to the upper end of the base 11, a backrest 13 coupled to the bottom portion of the seat surface 12 via a connecting portion 14, and a bottom portion of the seat surface 12. The grip 15 protrudes in a position where the user U can easily grip it upward and forward from both left and right ends.

  The load mechanism 3 makes the first and second pads 4 and 5 and the first and second pads 4 and 5 receive the force from the user by contacting the thigh H and the toe T of the user U as appropriate. The first and second arms 8 and 9 provided to fix the position to each other, and a rotating shaft 6 for rotatably supporting the left and right first arms 8 with respect to the seat 7.

Regarding the load mechanism 3, in this embodiment, as shown in FIGS. 12A and 12B, the first arm 8 and the second arm 9 that are integrally formed are provided on the left side of the user. That is, also in the present embodiment, the configuration in which the thigh H and the toe T are raised to rotate the load mechanism 3 is common to the left and right. The first arm 8 is carried by a rotating shaft 6 provided on the left side of the seating surface 12 of the seat 7 and is attached to the seat 7 so as to be rotatable. The second arm 9 is coupled to the front end portion of the first arm 8.
As shown in FIGS. 12B and 13A, in the initial state where the user U does not raise the thigh H and the toe T, the first arm 8 is attached so as to cross the seat surface 12 obliquely in a side view. At this time, the second arm 9 is provided so as to extend downward from the front end portion of the first arm 8.

As shown in FIG. 12A, in this embodiment, in addition to the load mechanism 3, the first pad 4 and the second pad 5 attached to the load mechanism 3 are also shared on the left and right. According to an example, the first pad 4 and the second pad 5 are formed as one cylindrical shape extending about 45 to 60 cm in the horizontal direction, and one end side of each of the first pad 4 and the second pad 5 is the first arm 8 and the second pad 5. The arm 9 is attached. The fixing positions of the first and second pads 4 and 5 on the first arm 8 or the second arm 9 can be adjusted as appropriate according to the physique of the user U.
In this embodiment, as shown in FIGS. 12 and 13, the load changing means 2 is provided coaxially with the mounting shaft 6 of the first arm 8. The configuration subsequent to the load changing means 2 will be described in the next stage.

Next, the configuration between the load changing means 2 and the load (weight W) will be described with reference to FIGS. As in the first embodiment, the combination of the ridge 22 and the pulleys 19 and 19 ′ from the load changing means 2 to the weight W at the rear stage and the pulleys 19 and 19 ′ are configured so that one set is installed per apparatus.
The load changing means 2 is connected to the weight W via the rope 22. The rope 22 extends upward from one end connected to the load changing means 2, extends downward through pulleys 19 and 19 ', and is connected to a weight W on the other end. The pulleys 19 and 19 ′ are provided above the load changing means 2 and the weight W, and are supported rotatably with respect to the frame 21. As shown in FIGS. 12B and 13A, when no load is applied to the rope 22 without applying a tensile force, the rope 22 is wound around the outer periphery of the load change means 2 only by being connected to one end of the load change means 2. It is assumed that it has not been taken.
Here, as shown in FIG. 13B, when the user U raises the thigh H and the toe T and rotates the load mechanism 3 and the load change means 2, the rope 22 is simultaneously wound on the outer periphery of the load change means 2. The weight W is pulled upward. At this time, the load required for the user U to raise the load mechanism 3 changes according to the outer diameter of the load changing means 2.

  In the present embodiment, the load changing means 2 is configured as shown in FIG. 14, and, like the first embodiment, can be rotated within a range of approximately 65 ° from the start point. The outer diameter of the load changing means 2 is gradually increased from the start point, and after passing through the maximum point, the outer diameter is gradually decreased to reach the maximum rotation angle. Detailed specifications of the load changing means 2 such as the point at which the outer diameter becomes maximum (approximately 10 ° from the start point) and the outer diameter at the start point and the maximum rotation angle are the same as those in the first embodiment.

[Operation]
The operation of the muscle strength enhancing apparatus of the present embodiment having the above-described configuration is basically the same as that of the first embodiment described above. The force applied to the load mechanism 3 by the user U is transmitted to the weight W through the load changing means 2, the rope 22 and the pulleys 19 and 19 '. The rope 22 is wound around the outer periphery of the load changing means 2 at the same time that the load changing means 2 rotates by a predetermined angle from the initial state (start point). At this time, the load applied to the user U changes sequentially according to the outer diameter of the load changing means 2.

  The principle of changing the load is the same as the basic operation principle described in FIG. The load applied to the user U starts from a light load, reaches the maximum load when the user U reaches an angle range in which the load mechanism 3 can be easily rotated, and then gradually loads until reaching the maximum rotation angle. Is lighter. Therefore, this embodiment apparatus can also provide a muscular strength strengthening apparatus that is less harmful to the end load and that does not require the user to exert unnecessary power.

As described above, the apparatus of the present embodiment also allows the user to easily reinforce the trunk muscle group and the anterior tibial muscle.
In addition, the apparatus of this embodiment has a feature that the structure is simpler and the number of parts is smaller than that of the apparatus of the first embodiment.

The present invention is not limited to the configurations described in the above examples, and various design changes and other modifications are possible.
First, the shape of the load changing means is not limited to those described in the above examples, and is appropriately determined according to the specificity of the operation mode. As for the training apparatus to which the load changing means is applied, an appropriate apparatus may be selected in accordance with a sporting event or the like to be trained. Even when the muscle strength enhancing device of the present invention is used for the purpose of rehabilitation, the existing strength enhancing device to which the load changing means is applied is also appropriate according to the muscle part to be strengthened. Should be selected.

The muscular strength strengthening device described in the first and second embodiments described as one embodiment of the present invention relates to, for example, a configuration in which the load mechanism 3 is rotated by raising the thigh. In this embodiment, the load mechanism 3 is integrated with both legs. However, the load mechanism 3 and the subsequent elements from there to the weight are installed so that each leg can be moved independently from side to side so that the movement of raising the thigh can be alternated for each leg. It does not matter as a configuration.
Further, the load mechanism 3 may be configured such that the second pad 5 and the second arm 9 are omitted, and at least the trunk muscle group can be strengthened by raising the first pad 4 applied to the thigh H. . Such a configuration can also contribute to prevention of falls.

  Regarding the load changing means 2, the size and the maximum rotation angle of the entire load changing means 2 are not limited to the configurations described in the above embodiments. Further, the ratio of the maximum outer diameter to the outer diameter at the start point or the maximum rotation angle is not limited to that described in the above embodiment. Furthermore, depending on the purpose (whether it is mainly used for training athletes or whether rehabilitation is the main focus) or the age group of the user, etc., how many times the maximum rotation angle is brought from the starting point, etc. However, fine adjustment may be added as appropriate. At this time, if several types of load changing means 2 prepared in advance are configured so that they can be appropriately replaced, a more versatile muscular strength strengthening device can be obtained.

As described in detail above, it is apparent that the present invention is a novel and extremely useful invention that provides a device in which the load varies in one continuous operation.
Furthermore, the present invention corresponds to the peculiarity of the movement mode, can perform training suitable for the output characteristics of each sporting event, can efficiently perform the desired muscle strengthening exercise, and does not spend useless power It is clear that it provides a device for strengthening muscle strength.
Similarly, even when the above device is used for the purpose of rehabilitation, maintenance of muscle strength of the elderly, etc., according to the present invention, appropriate load characteristics can be realized according to the circumstances of each user, which is more effective for the user. Rehabilitation or muscle strengthening exercises.

It is a figure which shows the basic operation principle of this invention. It is a figure which shows the basic operation principle of this invention. It is a figure which shows the basic operation principle of this invention. It is a figure which shows the basic operation principle of this invention. It is a figure which shows the basic operation principle of this invention. It is a figure which shows the basic operation principle of this invention. It is a figure which shows another embodiment of this invention. It is a perspective view which shows one Example of the muscular strength strengthening apparatus of this invention. It is a figure which shows the use condition of the muscular strength reinforcement apparatus of FIG. It is a side view of the muscular strength reinforcement apparatus of FIG. It is a front view of the muscular strength strengthening device of FIG. It is the front and side view which show another Example of the muscular strength strengthening apparatus of this invention. It is a figure which shows a mode when the initial state of a load mechanism and a thigh are raised. It is a figure which shows an example of a load change means.

Explanation of symbols

A rotating shaft B rod B1, B2 first and second rod C rope H thigh S1, S2 first and second pulley T toe U user W weight 1 muscle strengthening device 2 load changing means 3 load mechanism 4, 5 First and second pads 6 Rotating shafts 7 Seats 8 and 9 First and second arms 10 Connecting portion 11 Base 12 Seat surface 13 Backrest 14 Connecting portions 15 Grip 16, 17 Mounting shaft 18 Guide rail 19 Pulley 20 shaft 21 frame 22, 22 'rope

Claims (5)

A device for performing muscle training or rehabilitation by applying a predetermined load to a user,
A force applied from a user is transmitted to the predetermined load via at least one pulley;
At least one of said pulleys is
For each moment from the beginning of the one operation to the end of the operation, which is shown in the output characteristics representing the way of exerting the force to be exhibited during one operation of the sporting event or the like that is prepared in advance. The required force is a load changing means having a shape expressed by appropriately changing the distance on the perpendicular to the action line where the load is applied from the center of rotation,
The load changing means is
training or characterized by the fact that f × r = constant (where f is force, r is the distance on the normal to the action line where the load of the load acts from the rotation center of the load changing means) A device for rehabilitation. A device for strengthening the psoas muscle and other trunk muscles,
A seat to allow the user to perform a saddle movement while sitting,
A load mechanism for transmitting a movement to raise a lower limb performed by the user sitting on the seat to a predetermined load;
A load mechanically connected to the load mechanism and receiving the kinetic energy of the user from the load mechanism;
The load mechanism is
A pad that contacts the front of the user's thigh and receives a force from the user;
An arm for coupling the pad;
A rotating shaft for rotatably supporting the arm with respect to the seat;
Consists of
A muscular strength strengthening device configured to transmit a force from the user to the load when the user raises a lower limb and angularly displaces the load mechanism about the rotation axis. .   A second pad that is brought into contact with the toe of the user or the back of the foot and receives a force from the user is coupled to the arm via a predetermined extension member. The muscular strength reinforcement device according to claim 2. The load comprises a weight to which a force from the load mechanism is transmitted through at least one pulley, and at least one of the pulleys includes:
The necessary force for each moment from the beginning of the one operation to the end of the operation indicated in the output characteristic indicating how to output the force to be exhibited during one operation of the user raising the lower limb, The muscular strength strengthening device according to claim 2 or 3, wherein the muscular strength strengthening device has a shape expressed by appropriately changing a distance on a perpendicular to an action line on which a load of a load acts from the center of rotation. A method for allowing a user to perform muscle training or rehabilitation,
Prepare in advance an output characteristic indicating how to exert the force to be exhibited during one operation such as a sporting event to be trained,
By appropriately changing the necessary force for each moment from the beginning of the one operation to the end of the operation indicated in the output characteristics, the distance on the normal to the action line where the load of the load acts from the rotation center is appropriately changed. The load changing means having the shape shown is specified using a relationship of f × r = constant (where f is a force, r is a distance on a perpendicular line from the rotation center of the load changing means to an action line on which the load of the load acts). Made,
Using the predetermined training device that performs muscle training or rehabilitation by applying a predetermined load to the user, wearing this load changing means, the user is given a change in load increase / decrease according to the output characteristics. A method characterized by exercise.

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