WO2013047584A1 - Stretching apparatus and stretching method - Google Patents

Abstract

Provided are a stretching apparatus and a stretching method that enable stretching for increasing muscle flexibility and widening the range of motion of joints. The present invention is provided with a swing part (60) that swings in accordance with the motion of a moving part which is a part from among parts of the operator's body that the operator wants to stretch, and a spring mechanism (70) provided with a mechanical spring (80) that is caused to stretch or be compressed by the swinging of the swing part (60), and is caused to generate spring force arising due to such stretching and compression. The present invention is characterized in that the mechanical spring (80) has a characteristic relationship with a muscle spring (muscle spring is a term used when comparing the user's muscles to a spring) and the characteristic relationship is a relationship in which in a case where spring force generated by the swinging of the swing part (60) is stored in the mechanical spring (80), the muscle spring relaxes and the spring force of the muscle spring is released, while in a case where the spring force of the mechanical spring (80) is released, the muscle spring is stretched and spring force is stored in the muscle spring.

Description

Stretching equipment and stretching method

The present invention relates to a stretching apparatus and a stretching method.

For example, in a gym or the like, various training devices are installed. These training apparatuses are for the purpose of strengthening muscles, and are intended to strengthen the muscles by applying a load to the muscles. As such a training apparatus, there exist some which are disclosed by patent document 1 and patent document 2, for example.

Patent Document 1 discloses an exercise device having a configuration in which a load unit operates in a direction in which a load is applied to a muscle and operates in a direction in which the muscle is relaxed. Further, Patent Literature 2 discloses a training device for applying an initial motion load in order to solve problems caused by muscle hardening due to an end load and causing muscle output to occur in a portion where muscle output may be small. .

International Publication Number WO2007 / 144945 JP 2006-218194 A

By the way, in the sports and medical fields, stretching is actively performed. This stretching is performed for a purpose different from the purpose of strengthening the muscle as described above. That is, stretching is performed for the purpose of rehabilitation (rehabilitation training) in a nursing facility or the like in addition to increasing the flexibility of the muscle and expanding its movable region. Such a stretch is often performed without using a dedicated device at present, but also in the contents disclosed in Patent Document 1 and Patent Document 2 described above, the stretch is the main focus. Absent.

The present invention was made based on the above circumstances, and the purpose thereof is to provide a stretching device and a stretching method capable of stretching to increase muscle flexibility and expand the range of motion of the joint. It is what.

In order to solve the above-described problem, according to the first aspect of the present invention, the swinging part swinging according to the operation of the movable part to be stretched among the parts of the user's body, and the swinging part swinging And a spring mechanism portion having elastic means that is stretched or contracted to generate elastic force by the extension or contraction, and the elastic means is a muscle when a predetermined muscle of the user is regarded as a spring. The elastic spring has a specific relationship with the spring. When the elastic force is stored in the elastic means by the swing of the swinging portion, the muscle spring relaxes and the spring of the muscle spring A device for stretching is provided, in which, when the force is released while the elastic force of the elastic means is released, the muscle spring is stretched and the spring force is stored in the muscle spring. Is done.

In the above-mentioned invention, the spring mechanism portion has a spring mounting portion and a spring retracting portion, the elastic means is a mechanical spring, and the mechanical spring is provided with a fixed spring and a detachable spring, A fixed spring is non-detachably attached to the spring attachment portion, and an attachment / detachment slit is formed in the spring attachment portion, and an attachment / detachment spring is detachably provided in the attachment / detachment slit, and a spring retracting portion is further provided. A retractable slit is formed in the retractable slit, and an attachable / detachable spring is provided in the retractable slit. The attachable / detachable spring that is not attached to the attachable / detachable slit is attached to the retractable slit so that the spring force of the mechanical spring is increased. It can be set as the structure which can be adjusted.

Furthermore, in the above-described invention, the swinging portion includes a pair of swinging arms having a gripping portion that is gripped by a user's hand, and on the opposite side of the gripping portion across a fulcrum in swinging of the swinging arm. The spring mounting portion is connected, and the pair of swing arms separated from the fulcrum is opened, and the spring force of the mechanical spring is released before the grip portion is pushed by the user. At the same time, the muscle spring is stretched and the spring force is stored in the muscle spring, and when the user first pushes the gripping part by hand, the spring force is stored in the mechanical spring and the muscle spring contracts and the gripping part first. After the user pushes the gripping part by hand, the spring force is stored in the mechanical spring and the muscle spring after the user pushes the gripping part by hand in the next swing after the swing arm gives the momentum to swing. To relax, make up It can be.

Further, in the above-described invention, the swinging portion is provided with a pair of vertically extending portions extending upward from a fulcrum in swinging, and a zenith provided in a state of connecting them on the upper side of the pair of vertically extending portions. A gripping portion and a lower connecting portion provided in a state of connecting them in the lower side of the pair of vertically extending portions, and a spring mounting portion is connected to the lower connecting portion, and the vertically extending portion or the zenith gripping portion Any one of the parts is a part to which the user's hand is pressed from the part on the back side, and in the state before the user pushes the vertically extending part or the zenith gripping part by hand, the spring of the mechanical spring When the force is released, the muscle spring is stretched and stored in the muscle spring, and the spring force is stored in the mechanical spring after the user first pushes the vertically extending portion or the zenith gripping portion by hand. At the same time, the muscle spring contracts, and the vertical extension or zenith is gripped in the next and subsequent swings after the user first pushes the vertical extension or zenith gripping part with the hand to give the momentum to swing the swinging part. After the user pushes the part by hand, a spring force is stored in the mechanical spring and the muscle spring is relaxed.

Furthermore, in the above-mentioned invention, the swing transmitting portion includes a load transmitting portion that transmits the spring force of the mechanical spring attached to the spring mounting portion to the swinging portion, and the swinging portion swings about a fulcrum. And a pair of lower arm placement parts that are respectively attached to the side of the pair of swinging arms that are spaced apart from the fulcrum and on which the user's lower leg is placed, and of the pair of lower leg placement parts that face each other Each of which is attached to the side pressing portion, and in a state before the side pressing portion is pushed by the user's foot, the spring force of the mechanical spring is released and the muscle spring is extended to extend the muscle. The spring force is stored in the spring, and after the side pressing part is first pushed by the user's foot, the spring force is stored in the mechanical spring and the muscle spring contracts, and the side pressing part is first used by the user. Oscillates by pushing with foot After the next swing after giving the momentum to swing, the mechanical force is stored in the mechanical spring and the muscle spring is relaxed after the side pressing part is pushed by the user's foot. Can do.

In the above-described invention, a load unit connected to the elastic means may be provided, and the load unit may have a portion connected in series to the elastic means.

Further, in the above-described invention, the swinging portion swings for impact operation, which is an operation accompanied by an impact such that the load is maximized in a short time or the load is increased more than other times. The load in the impact operation can be a combination of the elastic means and the load unit.

Further, another invention is a stretching method for expanding a movable range of a movable part to be stretched among body parts, and in this stretch method, a swinging part that swings according to the operation of the movable part, And a spring mechanism having elastic means that is extended or shrunk with respect to the swinging of the swinging part and generates an elastic force by the extension or contraction. There is a specific relationship between the muscle spring when the predetermined muscle is regarded as a spring, and the specific relationship is when the elastic force is stored in the elastic means by the swing of the swing portion. The muscle spring relaxes and the spring force of the muscle spring is released, while when the elastic force of the elastic means is released, the muscle spring expands and the muscle spring stores the spring force. For stretching Based on the relationship, the movable part swings the swinging part, and when the elastic force in the elastic means is stored, the muscle spring relaxes and the muscle spring stores the spring force. In some cases, the elastic means can alternately perform the operation of releasing the elastic force.

According to the present invention, it is possible to perform stretching to increase the flexibility of muscles and widen the range of motion of joints.

It is a perspective view which shows the structure of a sora rise among the apparatuses for stretch which concern on the 1st Embodiment of this invention. FIG. 3 is a partial perspective view showing a configuration of an upper side of a spring mechanism portion in the stretching device of FIG. 1 and showing a positional relationship between a spring mounting portion and a spring retracting portion before a swing arm is pushed down. FIG. 3 is a partial perspective view showing a positional relationship between a spring mounting portion and a spring retracting portion after the swing arm is pushed down in FIG. 2. It is a perspective view which shows an example of a structure of the upper end attaching part to which the upper end of a detachable spring is attached. It is a figure which shows the image of the state in which a mechanical spring and muscle have a specific relationship, and force is stored between them. It is a figure which shows the image of the state in which force is stored between a mechanical spring and an antagonistic muscle. It is a perspective view which shows the structure of a solasic extension among the apparatuses for a stretch which concerns on the 1st Embodiment of this invention, and is a figure which shows the state by which a user's hand is pressed on an up-and-down extending | stretching part. It is a perspective view which shows the structure of a solasic extension among the apparatus for stretches concerning a 1st embodiment of the present invention, and shows a state where a user's hand is pressed against a boundary part of a zenith grip part and an up-and-down extension part. FIG. It is a perspective view which shows the structure of a solasic extension among the apparatuses for stretching concerning the 1st Embodiment of this invention, and is a figure which shows the state pressed against a zenith holding | gripping part in the state which raised the user's hand It is. It is a perspective view which shows the structure of a Coxa extension among the apparatuses for stretch which concern on the 1st Embodiment of this invention. It is a figure which shows the modification of the mechanism which adjusts the spring force of this invention, and is a perspective view which shows the state by which the attachment / detachment spring was extended. It is a figure which shows the modification of the mechanism which adjusts the spring force of this invention, and is a perspective view which shows the state in which the attachment / detachment spring was returned. It is a side view which shows schematic structure of the apparatus for stretching which concerns on the 2nd Embodiment of this invention. FIG. 14 is a perspective view showing a specific configuration for supporting the load unit with a wire in the stretching apparatus of FIG. 13. FIG. 14 is a front cross-sectional view showing the configuration in the vicinity of the load unit in the stretching device of FIG. 13. It is a figure which shows the mode of a load and time change when a load action part is only a load unit and a mechanical spring does not exist. It is a figure which shows the mode of a change of a load and time when not using a load unit and using only a mechanical spring as a load action part. It is a figure which shows the mode of a load and time change in the case of using a mechanical spring and a load unit as a load action part according to the second embodiment of the present invention. It is a side view which shows schematic structure of the apparatus for a stretch which concerns on the modification of the 2nd Embodiment of this invention. It is a side view which shows schematic structure of the apparatus for a stretch which concerns on the modification of the 2nd Embodiment of this invention. It is a side view which shows schematic structure of the apparatus for a stretch which concerns on the modification of the 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, a stretching apparatus and a stretching method according to a first embodiment of the present invention will be described with reference to the drawings. In the following description, the side (X1 side) on which the user moves from the seating portion to the outside of the stretching apparatus is the front side, and the opposite side (X2 side) is the back side.

<1. About SOLARIC RISE>

First, of the stretching devices, the sora-thick rise (stretching device 10A) will be described. As shown in FIG. 1, the stretching apparatus 10 </ b> A includes a base portion 20, a column base portion 30, a seating portion 40, a shaft support portion 50, a swing arm 60, and a spring mechanism portion 70. As an element.

The base portion 20 includes a central frame 21, a first horizontally long frame 22, a second horizontally long frame 23, and leg portions 24. The center frame 21 is a frame connecting the first horizontally long frame 22 and the second horizontally long frame 23, and in the case shown in FIG. 1, it is curved in an arch shape. The first horizontally long frame 22 is a frame fixed to one end side (front side) of the center frame 21, and the second horizontally long frame 23 is fixed to the other end side (back side) of the center frame 21. It is a frame. In the stretching apparatus shown in FIG. 1, the second horizontally long frame 23 is longer than the first horizontally long frame 22.

Also, a leg portion 24 is attached to each of the first horizontally long frame 22 and the second horizontally long frame 23, and the leg portions 24 are placed on an installation site such as a floor surface.

Further, the column base portion 30 extends upward from the intersecting portion of the center frame 21 and the first horizontally long frame 22 in the base body portion 20. The column base 30 supports a swing arm 60, a shaft support 50 and a spring mechanism 70 which will be described later.

Also, the seating portion 40 is provided in a portion of the central frame 21 near the first horizontally long frame 22. The seating section 40 includes a seating frame 41 and a seat 42 attached to the upper end side of the seating frame 41. The seat 42 is provided by the seating frame 41 at an appropriate height when the user sits. The seat 42 may be provided so that its height can be changed.

Further, the shaft support portion 50 is provided on the upper end side of the column base portion 30. The shaft support 50 is a portion that supports the swing arm 60 so that the swing arm 60 can swing, and includes, for example, a shaft (not shown) and a bearing (not shown). Then, the bearing is built in the column base 30, the shaft penetrates the hole portion of the bearing, and a portion near one end of the swing arm 60 is attached to both ends of the shaft, whereby the swing arm 60 can rotate (swing) smoothly. The swing arm 60 corresponds to the swing portion referred to in the claims.

As shown in FIG. 1, a pair of swing arms 60 are provided, and the pair of swing arms 60 are provided close to each other on the back side, but the front side is operated by the user. Therefore, it is provided wide. That is, the distance between the pair of swing arms 60 is wider on the front side than on the back side, and the swing arms 60 are provided so as to form a substantially crank shape. The swing arm 60 is attached to a shaft (not shown) of the shaft support portion 50 at a portion near one end (portion on the back side). In addition, the site | part of the near side of a pair of rocking | fluctuating arm 60 becomes the holding part 61 which a user hold | grips, and a pair of holding part 61 is provided so that it may mutually be substantially parallel.

Further, a spring mounting portion 72 is provided in a portion of the swing arm 60 on the back side of the shaft support portion 50. The spring mounting portion 72 constitutes a spring mechanism portion 70 described below.

The spring mechanism section 70 includes a lower mounting section 71, a spring mounting section 72, a spring retracting section 73, and a cover 74. Among these, the lower attachment portion 71 is a portion where the lower ends of the plurality of springs 80 are hooked and the lower ends of the springs 80 are fixed.

Also, the spring mounting portion 72 is provided with upper end mounting portions 81 and 82 for mounting the upper end side of the spring 80. FIG. 2 shows the positional relationship between the spring mounting portion 72 and the spring retracting portion 73 before the user pushes down the swing arm 60, and FIG. 3 shows the spring mount portion after the user presses down the swing arm 60. It is a figure which shows the positional relationship of 72 and the spring retracting part 73.

As shown in FIGS. 2 and 3, a part of the plurality of springs 80 is fixed to the spring mounting portion 72 via an upper end mounting portion 81 (in the following description, this spring 80 is fixed). A fixing spring 80a). 2 and 3, the upper end mounting portion 81 includes, for example, a nut or the like, and is fixed to the spring mounting portion 72 via the nut or the like. Further, the rest of the plurality of springs 80 excluding the fixed spring 80a is detachably provided to the spring mounting portion 72 via the upper end mounting portion 82 (in the following description, this spring 80 is attached to the mounting / dismounting spring 80b). And). That is, a plurality of (two in FIG. 2 and FIG. 3) fixing springs 80a are fixed to the spring mounting portion 72 by screws, for example, and a plurality of (three in FIG. 2 and FIG. 3) detachable springs. 80 b is detachably provided on the spring mounting portion 72.

In the following description, when the fixed spring 80a and the detachable spring 80b are collectively referred to, they are referred to as a mechanical spring 80. This mechanical spring 80 corresponds to the elastic means in the claims.

In order to enable the attachment / detachment of such an attachment / detachment spring 80b, the attachment / detachment slit 721 is provided in the spring attachment portion 72. The attachment / detachment slit 721 is provided with an orthogonal slit portion 721a and a parallel slit portion 721b, and the attachment / detachment slit 721 is provided in an approximately L shape by the orthogonal slit portion 721a and the parallel slit portion 721b. Here, in the present embodiment, the end face on the back side of the spring mounting portion 72 is provided along the width direction perpendicular to the depth direction (X direction) and the vertical direction. The orthogonal slit portion 721a is formed from the back side toward the near side along the X direction, and the parallel slit portion 721b is formed on one side in the width direction at the end portion on the near side (in FIGS. 2 and 3). (Left side) Note that the number of attachment / detachment slits 721 is the same as the number of attachment / detachment springs 80b. Therefore, in the configuration shown in FIGS. 2 and 3, three attachment / detachment slits are provided.

2 and 3, the above-described spring mounting portion 72 is provided so as to come into contact with and separate from the spring retracting portion 73 as the swing arm 60 swings. Here, as shown in FIG. 2, in a state where the user does not hold the swing arm 60 (non-use state), the spring mounting portion 72 is provided at the lowest position so as not to move. It has been. At this time, the spring mounting portion 72 is in close proximity to the spring retracting portion 73. In the following description, a portion where the swing arm 60 and the spring mounting portion 72 are positioned when the swing arm 60 is not used is referred to as a non-use position.

The spring retracting portion 73 is a portion where the detachable spring 80b retracted from the above-described spring mounting portion 72 is located. Therefore, the upper surface of the spring retracting portion 73 is provided substantially flush with the upper surface of the spring mounting portion 72 when the spring mounting portion 72 is located at the non-use position, so that the detachable spring 80b can be smoothly attached and detached. It is configured as follows. Further, the spring retracting portion 73 is provided with a retracting slit 731 similar to the attaching / detaching slit 721 in the spring attaching portion 72 described above. That is, the retraction slit 731 is provided with an orthogonal slit portion 731a and a parallel slit portion 731b, similarly to the above-described attachment / detachment slit 721. The orthogonal slit portion 731a and the parallel slit portion 731b are provided at the same position in the X direction, and the attachment / detachment spring 80b can be attached / detached satisfactorily.

FIG. 4 shows an example of the configuration of the upper end attachment portion 82 to which the upper end of the detachable spring 80b is attached. As shown in FIG. 4, the upper end mounting portion 82 includes a gripping portion 82a, a fixing plate 82b, a shaft 82c, and a locking portion 82d. The gripping portion 82a is a portion that the user grips to lift the fixing plate 82b from the spring mounting portion 72 when the detachable spring 80b is attached or detached. In addition, in what is shown in FIG. 4, the holding part 82a is provided in the ring shape. The fixed plate 82b is provided in a disk shape. The fixing plate 82b is a portion that is positioned above the spring mounting portion 72 and is urged to the spring mounting portion 72 by the spring force of the detachable spring 80b. The width and length of the fixing plate 82b are sufficiently larger than the width dimensions of the detachable slit 721 and the retracting slit 731. The preferred shape of the fixing plate 82b is a disk shape, and the diameter thereof is sufficiently larger than the width dimension of the detachable slit 721 and the retracting slit 731.

Further, the shaft 82c is a rod-shaped portion located between the fixed plate 82b and the locking portion 82d. The shaft 82c is a portion through which the detachable slit 721 and the retracting slit 731 are inserted, and has a size (for example, a diameter) corresponding to the insertion. The locking portion 82d is a portion for hooking the hook portion 83 on the upper end side of the detachable spring 80b, and is provided in a ring shape, for example.

A shock absorbing member (not shown) is attached to a portion of the spring attachment portion 72 that faces the column base 30. The shock absorbing member is made of, for example, rubber or sponge, and prevents the spring mounting portion 72 from directly colliding with the column base portion 30. Further, the impact absorbing member absorbs the impact, thereby preventing abnormal noise from being generated between the spring mounting portion 72 and the column base portion 30.

In the configuration as described above, the mechanical spring 80 is particularly set to have a specific relationship with the muscle. That is, the mechanical spring 80 according to the present embodiment is set so as to have a relationship between the mechanical spring 80 and the muscle so that when one is extended, the other is loosened, and when the other is extended, the other is extended. Has been.

(About the operation of the stretching device 10A (Sola Thick Rise))
Next, the operation of the stretching apparatus 10A (Solasic Rise) will be described. When the user stands in the vicinity of the stretching apparatus 10 </ b> A, the gripping portion 61 is gripped while standing. At this time, the grip part 61 is gripped with the back of the hand facing outward. Then, the user sits on the seat while holding the grip portion 61. If the swing arm 60 is not pushed down at this time, as shown in FIG. 1, the user's upper arm slightly extends toward the rear of the body while extending in the width direction of the body. Further, the user's forearm (lower arm) is bent at an angle close to perpendicular to the upper arm and bent downward. At this time, for the user, the posture of the arm that is not taken on a daily basis becomes a cramped state, and in particular, a state in which the vicinity of the shoulder is stretched is given.

Then, when the user pushes down the swing arm 60 while gripping the grip portion 61 after sitting, the swing arm 60 is rotated and the mechanical spring 80 is extended. That is, from the positional relationship between the upper arm and the forearm (lower arm) of the user as shown in FIG. 1, when the user pushes down the swing arm 60, the user is released from the feeling that the vicinity of the shoulder is extended. However, with this depression, the mechanical spring 80 expands and the spring force is stored. Note that this depression is preferably performed until the swing arm 60 is positioned at the lowest position in the swing.

Here, as described above, there is a specific relationship between the mechanical spring 80 and the muscle. That is, after the user pushes down the swing arm 60, the mechanical spring 80 is extended. When the mechanical spring 80 is extended, a predetermined one of the muscles (in the stretching apparatus 10A, rhomboid, triangular, biceps, trapezius, etc .; hereinafter referred to as a predetermined muscle) Is loose (shrinks). Therefore, in this state, if the user weakens the force that pushes down the grip 61 (removes the force), the user's arm is pushed upward by the spring force when the mechanical spring 80 tries to contract. . At this time, the user's wrist and forearm (the portion from the wrist to the elbow) are lifted up to the position shown in FIG. Then, the upper arm is bent from a state where the upper arm and the forearm form an obtuse angle to a state where an acute angle as shown in FIG. 1 is formed. Further, the predetermined muscle described above is extended by bending the upper arm accompanying the lifting.

That is, in the state shown in FIG. 1, the mechanical spring 80 contracts and the spring force is very small or hardly acts. On the other hand, due to the extension of a predetermined muscle, the gripping portion 61 is attached to the arm through the muscle. The force to push down is stored.

For this reason, once the swing arm 60 is pushed down from the state shown in FIG. 1 and the swing arm 60 is given momentum, thereafter, the user hardly applies force or lightly power even if the user is not particularly conscious. The swing arm 60 can be swung up and down by the balance between the force to contract a predetermined muscle and the force to the mechanical spring 80 to contract.

That is, the gripping portion 61 is pushed downward by a force similar to the release of the spring force in a predetermined muscle. When a predetermined muscle is regarded as a spring (hereinafter referred to as a muscle spring if necessary), when one of the mechanical springs 80 and the muscle spring is stretched to accumulate force, the other is contracted. (Or loosened), the force is released, and when the other is extended to store the force, one is contracted (or loosened) and released.

FIG. 5 schematically shows the relationship between the mechanical spring 80 and the muscle spring. As shown in FIG. 5, when the mechanical spring 80 is extended, the muscle spring is contracted. Conversely, when the mechanical spring 80 is contracted, the muscle spring is extended.

Also, in FIG. 1, certain of the muscles are stretched, but the triceps, etc. are loose. Usually, when the loose triceps, etc. are extended and the swing arm 60 is pushed down, the triceps, etc. become stiff as they extend, but once the swing arm 60 is moved to give momentum, Can swing the swing arm 60 with almost no force. Therefore, the triceps, etc. can continue exercise in a state where the muscle does not harden even if it is extended.

In this swing, the weight of the upper arm and forearm (lower arm) does not need to be supported by its own muscles, so no extra force is applied to the upper arm and forearm (lower arm), and the muscles are not cured. So you can continue your exercise. That is, even if the triceps, etc. extend from a state where they are loosened by pushing down the swinging arm 60, the triceps, etc., do not harden when extended. Therefore, it becomes possible to continue stretching in a relaxed state without extra force. That is, when the swing arm 60 is pushed up, a predetermined one of the muscles is stretched to realize a stretch exercise that widens the range of motion. However, it is possible to perform such a stretch exercise without difficulty. It becomes possible. Further, by using the stretching apparatus 10A, it is possible to exert the same effect as that of performing body trimming.

Due to the relationship between the mechanical spring 80 and the muscle spring as described above, the user can swing the swing arm 60 in the vertical direction with little force. Further, by swinging the swing arm 60, the stretched state and the relaxed state are repeatedly and repeatedly realized in the predetermined muscle of the user. At this time, since the user does not force force, the stretch can be realized in a very relaxed state. In addition, it has been confirmed that such a stretched state and a relaxed state are repeatedly realized without being overwhelmed, so that the movable range of the upper arm can be expanded. In particular, a person who uses the stretching apparatus 10A can surprisingly expand the movable range of the upper arm before and after the use. For example, conventionally, even if the upper arm cannot be moved due to the hardness of a predetermined muscle of the user, the upper arm is moved even in a part of such a range by performing the operation as in the present embodiment. It becomes possible.

Here, with respect to the above-described predetermined muscle, the predetermined muscle is regarded as a muscle spring and has a specific relationship with the mechanical spring 80 as shown in FIG. However, in human muscle, there is a portion that contracts (or relaxes) whenever there is a portion that extends. That is, as shown in FIG. 6, when the mechanical spring 80 is extended, there are muscles that are also extended (hereinafter, such muscles are referred to as antagonistic muscles), and when the mechanical spring 80 is contracted, the antagonistic muscles are also present. Shrinked (or relaxed). That is, in the actual stretching operation using the stretching apparatus 10A (Solasic Rise), the state shown in FIG. 5 and the state shown in FIG. 6 occur simultaneously.

However, since the muscle springs have the relationship shown in FIG. 5, the user can swing the swing arm 60 repeatedly in the vertical direction with little force. That is, it is the relationship between the mechanical spring 80 and the muscle spring as shown in FIG. 5 that realizes the swing of the swing arm 60 even when the user hardly applies force.

By the way, expanding the movable region as described above is realized by forcibly pushing up the swing arm 60 by the spring force of the mechanical spring 80 and repeating it several times. Therefore, it is possible for the user to expand the movable region of the upper arm unexpectedly before use. Moreover, the repetition of such an operation is realized by having a specific relationship between a predetermined one of the muscles and the mechanical spring 80. That is, in the case of having the above-mentioned specific relationship, the user can unconsciously repeat the stretching operation, and the movable region of the upper arm can be expanded.

In addition, in this embodiment, the spring force of the mechanical spring 80 is adjusted depending on whether or not the attachment / detachment spring 80b is attached to the attachment / detachment slit 721 of the spring attachment portion 72 so that this unique relationship is optimal. Is possible. As a result, the stretching operation can be repeated more favorably.

Also, the stretch device 10A exhibits a remarkable effect even in nursing care applications. For example, by using the stretching device 10A for rehabilitation in an injury or the like, it is possible to widen the range in which the forearm can be moved even when only the inconvenient movement is possible in the past. It is possible to relieve the pain of one person.

<2. About Sorachix Pension>
Next, of the stretching devices, the SOLATHIC EXPERIENCE (stretching device 10B) will be described. Note that the same parts as those of the above-mentioned solasic rise (stretching apparatus 10A) will be described using the same reference numerals, and the description thereof will be omitted as appropriate since it will be redundantly described. 7 to 9, the X1 side is the front side, and the X2 side is the back side (rear side).

As shown in FIGS. 7 to 9, the stretching apparatus 10 </ b> B includes a base portion 20, a seating portion 40, a shaft support portion 50, a swing arm 60, and a spring mechanism portion 70, and further a footrest portion. 90.

In the present embodiment, a support frame 25 that connects the seat 42 and the central frame 21 is provided between the lower portion of the seat 42 of the seating section 40 and the central frame 21 of the base body section 20. A load acting on the seat 42 is received by the support frame 25.

Here, in the present embodiment, the swing arm 60 has a pair of vertically extending portions 62, a zenith gripping portion 63, and a lower connecting portion 64. The vertically extending portion 62 is a portion of the swing arm 60 that extends from below to above. The vertically extending portion 62 is connected by a bearing portion 65 at the lower end thereof. That is, a bearing portion 65 having a bearing or the like is provided at the lower end of the vertically extending portion 62. A shaft 26 a extending from the front extending portion 26 extending from the second horizontally long frame 23 is inserted into the hole portion of the bearing portion 65. Thereby, the swing arm 60 can swing about the shaft 26a (bearing portion 65) as a fulcrum.

Note that, as shown in FIGS. 7 to 9, the vertically extending portion 62 extends obliquely toward the back as it goes upward when the swing arm 60 is not loaded.

The stretching device 10B also has a spring mechanism 70. Here, in the present embodiment, a spring attachment portion 72 is attached to the lower connection portion 64. An attaching / detaching slit 721 is formed in the spring mounting portion 72. The attaching / detaching slit 721 is formed with an orthogonal slit portion 721a and a parallel slit portion 721b similar to those of the stretch device 10A described above.

Further, a spring retracting portion 73 is attached to the support frame 25 described above. The spring retracting portion 73 also has an orthogonal slit portion 731a and a parallel slit portion 731b similar to the stretching device 10A described above. Further, the surface of the spring retracting portion 73 is provided substantially flush with the surface of the spring mounting portion 72 when the spring mounting portion 72 is located at the non-use position, so that the detachable spring 80b can be smoothly attached and detached. It is configured as follows.

Furthermore, the stretching apparatus 10B has a footrest portion 90. The footrest part 90 includes a front extending part 91, a front side placing part 92, and a rear side pressing part 93. The front extending portion 91 is a rod-shaped member that extends from the lower connecting portion 64 toward the front side. The front placing portion 92 is a portion on the front side of the front extending portion 91 that is attached to the front extending portion 91 in a direction orthogonal to and parallel to the installation surface and on which the user's feet are placed. The rear pressing portion 93 is attached to the front extending portion 91 in parallel to the front mounting portion 92 with a predetermined interval from the front mounting portion 92. The rear side pressing portion 93 is a portion for pressing from the back side so that the foot placed on the front side mounting portion 92 does not move to the back side.

(Regarding the operation of the stretching device 10B (Solachic Pension))
Next, the operation of the stretching apparatus 10B (Solasic Expedition) will be described. While sitting on the seat 42, the user extends the arm to an arbitrary position from the side to the top, and presses the hand against the back side of either the vertically extending portion 62 or the zenith gripping portion 63.

7 shows a state in which the hand is pressed against the boundary portion of the zenith gripping portion 63 in the vicinity of the vertically extending portion 62. At this time, the upper arm of the user is directed upward while facing the back of the body. Moreover, a user's forearm (lower arm) is located in the back side rather than the up-and-down extending | stretching part 62, and is extended | stretched upwards in the state. Preferably, the palm of the user is pressed from the back side of the zenith gripping portion 63, and at this time, it is preferable that the thumb is directed inward.

Further, FIG. 8 shows a state in which the hand is pressed against a portion of the vertically extending portion 62 that is as high as the shoulder. At this time, the user's upper arm extends slightly toward the back of the body while extending in the width direction of the body. Further, the user's forearm (lower arm) is bent toward the front side of the body at an angle perpendicular to or close to the upper arm. The palm is preferably pressed against the vertically extending portion 62 with the back of the hand facing the outside of the body and the fingers of the hand facing the inside.

FIG. 9 shows a state in which the hand is pressed against a portion closer to the center than the position of FIG. That is, in the state shown in FIG. 9, both hands (both arms) are stretched (fisted up) in a state close to Banzai, and the back side of both hands (both arms) is pressed against the zenith gripping portion 63. Has been. In the state shown in FIG. 9, both arms are extended more than in the state shown in FIG. Therefore, in the state shown in FIG. 9, the position of both hands (both arms) pressed against the zenith gripping portion 63 is closer to the elbow than in the case shown in FIG.

7 to 9, the user feels cramped because the upper arm is pulled backward, which is not taken on a daily basis for the user.

In the posture shown in FIGS. 7 and 8, the user's back muscles are stretched, and a part of the user's back hits the backrest. In addition, the user places his / her foot on the front mounting portion 92 so that a load is applied to the swing arm 60 via the front mounting portion 92. In FIG. 7, when the swing arm 60 swings backward, the posture is such that the chest is pushed further forward, and the back muscles are stretched. Also in the posture shown in FIG. 8, the posture is such that the chest is pushed forward, and the back muscles are stretched. Similarly, in the posture shown in FIG. 9, the spine is stretched by lifting both arms. Here, in the state shown in FIG. 7 and FIG. 8, chest muscles such as the great pectoral muscles (such muscles may be used as predetermined muscles) are extended. In the state shown in FIG. 9, the muscles behind the shoulder are mainly stretched. The muscles to be stretched include the great circular muscle, the small circular muscle, the subspinous muscle, the triceps, etc. May be a predetermined muscle).

Here, in the state shown in FIGS. 7 and 8, the swing arm 60 is located on the rear side, and the mechanical spring 80 is contracted. In this state, when the user applies a little force to the foot and pushes the front mounting portion 92, the swing arm 60 is swung forward. At this time, the oscillating arm 60 extends the mechanical spring 80 while resisting the spring force of the mechanical spring 80, whereby the spring force is stored.

By the way, in the state where the swing arm 60 is located on the rear side, predetermined muscles (such as the pectoralis major, triceps, deltoid, etc. in the stretching apparatus 10B; hereinafter, predetermined muscles). However, in the state where the swing arm 60 is located on the rear side, other muscles that extend may be predetermined muscles) are in an extended state. Then, when the mechanical spring 80 is extended, a predetermined muscle is loosened. When the foot force is released after the mechanical spring 80 is extended to some extent, the user's arm is pushed toward the back side by the spring force when the mechanical spring 80 tries to contract. At this time, the user's arm is pushed into the back side, and the predetermined muscle is stretched by the push into the back side.

That is, in the state shown in FIG. 7 to FIG. 9, the mechanical spring 80 is contracted and the spring force is very small or hardly acts, while the arm is rocked through the muscle due to the extension of the predetermined muscle. A force for pushing the moving arm 60 forward is stored.

Therefore, in the state shown in FIG. 7 to FIG. 9, even if the user is not particularly conscious, the predetermined muscle is restored from the stretched state by applying little force or applying light force. The swinging arm 60 can be pushed forward by the force of returning to. That is, between one predetermined muscle, which is a muscle spring, and the mechanical spring 80, when one of them stretches and accumulates force, the other contracts (or loosens) and the force is released, and the other stretches. Thus, when the force is stored, there is a relationship that one side is contracted (or loosened) to be in an open state. For this reason, the stretching apparatus 10B also has a relationship as shown in FIG.

However, also in the present stretching device 10B, antagonistic muscles exist, and the state shown in FIG. 5 and the state shown in FIG. 6 occur simultaneously. However, it is the relationship between the mechanical spring 80 and the muscle spring as shown in FIG. 5 that realizes the swing of the swing arm 60 even when the user hardly applies force.

Even in the stretching apparatus 10B, in a state before the swing arm 60 is swung (a state in which the mechanical spring 80 is contracted), predetermined muscles are stretched, but the latissimus dorsi muscle, upper arm The biceps, trapezius, etc. are loose. Here, when the loose back muscle, biceps, trapezius, etc. are extended and the swing arm 60 is pushed forward, the wide back muscle, biceps, trapezoid, etc. become harder as they extend. However, once the swing arm 60 is moved to gain momentum, the swing arm 60 can be swung with little force thereafter. Therefore, the latissimus dorsi, biceps, trapezius, etc. can continue to exercise while the muscles do not harden even when stretched.

That is, even if the latissimus dorsi, biceps, trapezius, etc. extend from the state where the swinging arm 60 is located on the rear side, the latissimus dorsi, biceps, trapezius Etc. do not become stiff when stretched and can thereby be relaxed. Further, the predetermined muscles can be relaxed and relaxed by the swinging arm 60 turning forward. Therefore, it is possible to continue the exercise in a relaxed state without adding extra force. That is, when the oscillating arm 60 is pushed back by the spring force of the mechanical spring 80, a predetermined one of the muscles is stretched to realize a stretching motion that widens the range of motion. It becomes possible to perform a reasonable stretching exercise without difficulty. In addition, by using the stretch device 10B, it is possible to exert the same effect as that of performing body trimming.

Due to the relationship between the mechanical spring 80 and the muscle spring as described above, the user can swing the swing arm 60 between the front side and the back side with little force. . Thereby, the stretched state and the relaxed state are repeatedly and repeatedly realized in the predetermined muscle of the user, and the stretch can be realized in a very relaxed state.

In the stretching apparatus 10B, the swinging arm 60 is forcibly moved backward by the spring force of the mechanical spring 80, and the stretching operation is performed by repeating the operation several times. For the user, it is possible to expand the movable region of the upper arm unexpectedly before use, and it is possible to realize a state in which the back stretches and the posture is improved without being conscious after use. Moreover, the repetition of such an operation is realized by having a specific relationship between a predetermined one of the muscles and the mechanical spring 80. That is, when having the above-mentioned specific relationship, the user can unconsciously repeat the stretching operation, and can extend the movable region of the upper arm and further extend the back muscles to improve the posture. Become.

In the stretch device 10B, the spring force of the mechanical spring 80 can be adjusted depending on whether or not the attachment / detachment spring 80b is attached to the attachment / detachment slit 721 of the spring attachment portion 72. As a result, the stretching operation can be repeated more favorably.

Also, it has been confirmed that such a stretch makes it possible to expand the range of motion of the forearm. Further, the stretch device 10B also exhibits a remarkable effect in nursing use.

<3. About Kokusa EXPENSION>
Next, among stretch devices, Coxa Expedition (stretch device 10C) will be described. Note that the same parts as those of the above-mentioned solasic rise (stretching apparatus 10A) will be described using the same reference numerals, and the description thereof will be omitted as appropriate since it will be redundantly described. Note that the X1 side in FIG. 10 is the front side, and the X2 side is the back side (rear side).

As shown in FIG. 10, the stretching device 10 </ b> C includes a base portion 20, a seating portion 40, a spring mechanism portion 70, a load transmission mechanism portion 100, and an open leg swinging portion 110.

The spring mechanism 70 in the stretching device 10C is located on the back side of the seating portion 40. Also in the stretching device 10 </ b> C, the spring mechanism portion 70 includes a spring attachment portion 72 and a spring retracting portion 73. However, in the stretching apparatus 10 </ b> C, the spring retracting portion 73 is fixedly provided with respect to the base portion 20. On the other hand, the spring mounting portion 72 can be slid in the vertical direction via a guide (not shown). In the initial state where almost no spring force is applied to the spring mounting portion 72, the upper surface of the spring mounting portion 72 is provided so as to be substantially flush with the upper surface of the spring retracting portion.

Also, the spring mounting portion 72 is formed with a detachable slit 721. The detachable slit 721 is formed with an orthogonal slit portion 721a and a parallel slit portion 721b similar to those of the stretch device 10A described above. The spring retracting portion 73 also has an orthogonal slit portion 731a and a parallel slit portion 731b similar to those of the stretching device 10A described above.

The load transmission mechanism unit 100 has a wire (not shown) and a pulley 101 (only one is shown in FIG. 10) serving as a direction changing unit. One end of the wire is connected to the spring mounting portion 72 described above. In addition, the wire is extended upward from one end side thereof, and then turned downward by a pulley (not shown), and further turned from the back side to the front side by a pulley (not shown). Further, the other end of the wire is connected to one side of the open leg swinging part 110, but is attached to the other side of the open leg swinging part 110 in the middle part from the other end to the one end. It is stretched over a pulley 101. Thereby, the tension of the wire is configured to act on the pair of open leg swinging portions 110. As for the wire, pulley, etc., if the mechanical spring 80 extends when the swing arm 111 described later is rotated in the closing direction, what is the specific attachment location, the number of attachments, etc. It may be a thing.

Also, the leg swinging unit 110 is a part for forcibly opening the leg with a spring force around the fulcrum. That is, the open leg swinging part 110 has a pair of swinging arms 111, a crus placing part 112, a side pressing part 113, and a heel placing part 114. Among these, the pair of swing arms 111 is a portion that swings so as to perform an opening / closing operation around a fulcrum. The swing arm 111 is provided with a rotation restricting portion for restricting the rotation range by setting (not shown). Further, the swing arm 111 corresponds to a swing portion referred to in the claims.

Further, the crus placement part 112 is attached to an extension part 111 a that extends upward from the swing arm 111. The lower leg placing portion 112 is a portion on which the user's lower leg is placed. Moreover, the side pressing part 113 is attached to the mutually opposing side (namely, inner side) among a pair of leg mounting parts 112. FIG. The side pressing portion 113 is a portion against which the inner side of the lower leg is pressed, and is a portion that applies a force for swinging the swing arm 111 by the pressing. That is, by pushing the side pressing portion 113 inside the lower leg, the swing arm 111 is rotated around the fulcrum while resisting the spring force.

The heel placement portion 114 is a portion located on the most front side of the open leg swinging portion 110 and is a portion on which the user's heel is placed.

(About the operation of the stretching device 10C (Kokusa Expedition))
Next, the operation of the stretching apparatus 10C (Coxa Expedition) will be described. When using the stretching apparatus 10 </ b> C, the user is in a state of being seated on the seat 42. At this time, the lower leg is placed on the lower leg placing part 112 and the inside thereof is pressed against the side pressing part 113. Further, in the initial state, the swing arm 111 is in a state of being largely opened, and a predetermined one of the muscles (in the stretch device 10C, a specific portion of the muscle group around the hip joint, adduction) A specific portion of the muscle group or the like (hereinafter referred to as a predetermined muscle) is in an extended state.

And the user puts a little force on the above-mentioned muscles and rotates them so that the side pressing portions 113 are close to each other (that is, the pair of swinging arms 111 is closed). Then, the swing arm 111 extends the mechanical spring 80 while resisting the spring force of the mechanical spring 80, and the spring force is stored. Further, as the swing arm 111 is closed, the predetermined muscle is relaxed from the stretched state.

That is, in the stretching apparatus 10C, the muscle spring is extended and the mechanical spring 80 is contracted when the leg is greatly opened, and conversely, the muscle spring is loose when the mechanical spring 80 is extended. It has become. That is, between one predetermined muscle, which is a muscle spring, and the mechanical spring 80, when one of them stretches and accumulates force, the other contracts (or loosens) and the force is released, and the other stretches. Thus, when the force is stored, there is a relationship that one side is contracted (or loosened) to be in an open state. For this reason, the stretching apparatus 10 </ b> C also has a relationship as shown in FIG. 5.

Also in the stretching apparatus 10C, in a state before the swing arm 111 is swung (the state in which the mechanical spring 80 is contracted), a predetermined one of the muscles is stretched, but the muscles around the hip joint Those that do not include a specific part in the group, and those that do not include a specific part in the adductor muscle group (corresponding to antagonistic muscles) are loose. Here, when the antagonistic muscles that are loose are extended and the pair of swing arms 111 are closed, the antagonistic muscles become harder as they extend, but once the pair of swing arms 111 is closed and momentum is applied, The swing arm 111 can be swung (opened / closed) with little force. Therefore, the antagonistic muscle can continue to exercise in a state where the muscle does not harden even when elongated.

That is, the antagonistic muscle does not harden even when the pair of swinging arms 111 is closed and extended from a relaxed state when the pair of swinging arms 111 is open, thereby relaxing. Further, in a state where the pair of swing arms 111 is swinging, the predetermined muscles can be relaxed and relaxed by rotating the pair of swing arms 111 so as to be closed. Therefore, it is possible to continue the exercise in a relaxed state without adding extra force. That is, when the pair of swinging arms 111 is pushed back in the opening direction by the spring force of the mechanical spring 80, a predetermined one of the muscles is stretched to realize a stretching motion that widens the movable range. Such a stretching exercise can be performed without difficulty.

Due to the relationship between the mechanical spring 80 and the muscle spring as described above, the user can swing the swing arm 111 between the closed state and the open state with little force. . As a result, the user repeatedly repeats a state in which the legs are widely opened and a state in which the legs are closed, and a predetermined muscle is repeatedly realized in an extended state and a relaxed state. Therefore, the user can realize stretching in a very relaxed state. In addition, by using the stretching apparatus 10C, it is possible to exert the same effect as that of performing body trimming.

In the stretching apparatus 10C, the pair of swinging arms 111 is forcibly moved in the opening direction by the spring force of the mechanical spring 80, and the stretching operation is performed by repeating this several times. By this stretching operation, it is possible for the user to widen the movable region of the hip joint unexpectedly before use. Moreover, the repetition of such an operation is realized by having a specific relationship between a predetermined one of the muscles and the mechanical spring 80. That is, in the case of having the above-described specific relationship, the user can unconsciously repeat the stretching operation, and the movable region of the hip joint can be expanded.

In the stretch device 10C, the spring force of the mechanical spring 80 can be adjusted depending on whether or not the attachment / detachment spring 80b is attached to the attachment / detachment slit 721 of the spring attachment portion 72. As a result, the stretching operation can be repeated more favorably.

Also, it has been confirmed that such a stretch makes it possible to expand the range of motion of the forearm. Further, the stretch device 10C also exhibits a remarkable effect in nursing care.

(Second Embodiment)
Next, a stretching apparatus according to the second embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, unlike the configuration in which the load is applied only by the mechanical spring 80 as in the first embodiment, the load unit 210 is used in addition to the mechanical spring 80. That is, a portion to which a load is applied (hereinafter, a portion to which the load is applied is referred to as a load application unit 200) is a mechanical spring 80 and a load unit 210. The details will be described below. In addition, the stretching apparatus 10D according to the present embodiment can be used not only as a stretch application but also as a training device for training muscles.

In the following description, a drawing relating to the stretching device 10A (Solasic Rise) will be used, but the stretching device of the present embodiment is referred to as a stretching device 10D. It should be noted that the configuration including the load application unit 200 included in the stretching device 10D can be applied to the stretching device 10B (Sorastic Exp.) And the stretching device 10C (Coxa Exp.). . Of course, the configuration described in the stretch devices 10A to 10C described above can be used as appropriate in the present embodiment.

As shown in FIG. 13, in the stretching device 10 </ b> D, a load unit 210 is connected to a mechanical spring 80 via a wire 220. That is, the mechanical spring 80 and the load unit 210 are connected in series. Here, the load unit 210 is composed of a plurality of weight members 211, but may be composed of one weight member 211. The wire 220 is one of connecting members, but a connecting member other than the wire 220 may be used. Examples of such a connecting member include a belt, a chain, a rotating shaft, and a gear, and these may be combined.

In FIG. 13, the spring mechanism unit 70 is not shown for simplification, but the spring mechanism unit 70 may be present, and only the mechanical spring 80 is provided and the spring mechanism unit 70 is not present. Also good. Specifically, in the first embodiment described above, the spring mounting portion 72 is integrated with the swing arm 60 at a portion of the swing arm 60 on the back side of the shaft support portion 50. It is connected to become. Also in this embodiment, such a configuration may be adopted. The swing arm 60 is extended to the X2 side from the shaft support portion 50, and the mechanical spring 80 is connected to the end portion side of the extended swing arm 60. It is good also as a structure made to do.

The load unit 210 is connected to the mechanical spring 80 via the wire 220. That is, the mechanical spring 80 described above is connected to one end side of the wire 220, and the load unit 210 is connected to the other end side. However, the mechanical spring 80 may be directly connected to the wire 220, or may be indirectly connected through another member. Further, the load unit 210 may be directly connected to the wire 220, or may be indirectly connected through another member. Here, as shown in FIG. 13, when the wire 220 has a length of a certain length or more, one or a plurality of pulleys 230 may be used to change the direction of the wire 220. The pulley 230 is an example of a direction changing member, but a direction changing member other than the pulley 230 may be used. As such, there is a shaft member, which may or may not rotate.

Note that a suspension member 240 for suspending the load unit 210 may be connected to the other end side of the wire 220. FIG. 14 and FIG. 15 show an example of the configuration. The weight member 211a located at the uppermost position is integrally connected to the suspension member 240. Accordingly, the suspension member 240 is lowered against the force of the mechanical spring 80, and the uppermost weight member 211a hits the lower weight member 211 immediately below. For this reason, it is possible to align a hole of a suspension member 240 described later and a recess of the weight member 211.

As shown in FIG. 15, the suspension member 240 is provided with holes 241 aligned in the longitudinal direction (vertical direction). Each hole 241 allows the fastener 250 to be inserted, and the pitch at which the holes 241 are provided corresponds to the thickness of the weight member 211. Moreover, as shown in FIG. 14, the recessed part 211b for positioning the fastener 250 is also provided in the downward side of the weight member 211, and the recessed part 211b is provided when the hanging member 240 is positioned at the lowest position. It is provided at a position aligned with the hole 241. Therefore, a weight member that is suspended from the suspension member 240 by selecting one of the weight members 211, inserting the fastener 250 into the recess 211b of the weight member 211, and inserting the fastener 250 into the hole 241. The number 211 is determined.

Note that the weight member 211 is provided with a pair of insertion portions 211c, and the guide columns 260 are inserted into the insertion portions 211c. Therefore, the weight member 211 is guided by the guide column 260 and can move in the vertical direction. The upper and lower ends of the pair of guide columns 260 are fixed to the frame 270.

<About action and effect>
When the stretching apparatus 10D having the above configuration is used, in addition to the relationship between the mechanical spring 80 and the muscle spring as described above, the following action is produced. That is, when the user grips the grip portion 61 of the swing arm 60 and depresses the grip portion 61, the mechanical spring 80 extends and the load unit 210 is lifted. Thereafter, when the grip 61 is pushed up, the mechanical spring 80 contracts and the load unit 210 is lowered. Thereafter, by repeating such an operation, the swing arm 60 can be swung in the vertical direction.

By the way, when the swing arm 60 swings, the load acting on the user and the state of operation are the model of the load unit 210 only existing and the model of only the mechanical spring 80 described in the above embodiment. This is different from any of the stretching devices 10A to 10C of the first embodiment. This will be described with reference to FIGS.

First, a model in which the load application unit 200 is only the load unit 210 will be described with reference to FIG. FIG. 16 is a diagram showing a state of changes in load and time acting on the user when the load application unit 200 is only the load unit 210 and the mechanical spring 80 is not present. In FIG. 16, the solid line indicates the load acting on the user when the user performs an operation that generates a large amount of power in a short time (instantaneous) with a fast movement. Moreover, in FIG. 16, the one-dot broken line has shown the load which acts on a user when a user lifts the load unit 210 slowly. As an image of the movement as shown by the solid line in FIG. 16, for example, a turn-back action when throwing a ball during baseball pitching, an action when a leg kicks the ground in short-distance running, and a turn-back during a golf swing There are many similar scenes in various competitions. Here, the switching operation refers to an operation in which the acceleration changes in a series of movements. When the acceleration changes, the load acting on the user greatly increases.

However, it is very preferable to expand the movable region (movable range) of the body including the legs and arms even in such a turning operation. Therefore, as described in the first embodiment, it is preferable that the mechanical spring 80 has a specific relationship with the muscle spring described above. However, in the present embodiment, not only the mechanical spring 80 but also the load unit 210 exists in the load application unit 200, and thus, a unique relationship in the case of only the mechanical spring 80 as in the first embodiment described above. May be slightly changed.

As shown in FIG. 16, the case of using only the load unit 210 as the load acting portion 200, is performed crosscut operation near the motion start (time t _0), used when the motion start of the vicinity of the (time t ₀₎ who The load acting on is the maximum. However, as a result of forward turning operation, the load unit 210 is moved vigorously, and the beginning turning point near the movement of the reciprocating (around time t _1), the load due to the inertia that tries to move the load units 210 Min Become. The load gradually increases in the return operation after the turn-around point (time t ₁ ), but the load acting on the user is maximized again near the time when it returns to the initial position and stops (near time t ₂ ). . As described above, when only the load unit 210 is used as the load action unit 200, the load is minimized near the turning point (time t ₁ ) between a series of actions, and the muscle is in a relaxed state at that time. When you are relaxed, your previously strained muscles are loose. In order to train the turn-back operation, it is preferable to repeat a motion where there is a relaxing time between the turn-back operations, as shown in FIG. ing.

Next, a model in which the load acting unit 200 is only the mechanical spring 80 as in the first embodiment will be described with reference to FIG. FIG. 17 is a diagram illustrating a state of changes in load and time acting on the user when only the mechanical spring 80 is used as the load application unit 200 without the load unit 210. As shown in FIG. 17, when only the mechanical spring 80 is used as the load action unit 200, the spring force by the mechanical spring 80 is minimum in the vicinity of the initial position (movement start time t ₀ ). When a force is applied from the initial position and the mechanical spring 80 is extended, the load increases with the extension, and the load becomes maximum in the vicinity of the turning point (time t ₁ ) of the reciprocating motion. When the time further elapses, the spring force decreases as the mechanical spring 80 contracts, made back to the initial position (and time t ₂ has elapsed) again spring force is minimized. Thus, when the load action part 200 is only the mechanical spring 80, the load is small at the beginning (time t ₀ ) and the last (time t ₂ ), and the load is maximum at the turning point (time t ₁ ).

Here, if FIG. 16 is compared with FIG. 17, in the case of FIG. 16, it is suitable for the training for training the turn-back operation. That is, a large load acts on the user in a short time in the turn-back operation, and the muscles are relaxed except for the turn-back operation. Therefore, it is effective to repeatedly perform an operation in which a large load is applied to the user during a short time as shown in FIG. 16 corresponding to the switching operation and the muscles are relaxed during the switching operation. . In the case shown in FIG. 16, the load acting on the user is minimized at the middle turn-back point, and the load unit 210 is in a state close to free fall.

On the other hand, in the case of FIG. 17, the load acting on the user increases as the mechanical spring 80 extends, and the relationship of the load is substantially opposite to that shown in FIG. That is, when the load acting part 200 is only the mechanical spring 80, the load acting on the user is minimized near the beginning of the first movement (time t ₀ ), and acts on the user near the intermediate turning point (time t ₁ ). The load that acts on the user is then minimized again near the end of the last cycle (time t ₂ ). That is, the muscle is relaxed at the beginning of the motion cycle, but the muscle is then relaxed at the end of the motion cycle. For this reason, the case of FIG. 17 is preferable for rehabilitation applications that increase the flexibility of the body, but is not preferable for training applications that train muscles to perform fast movements such as turn-back movements.

That is, when training the turn-back operation, it is preferable to repeat the operation in which there is a relaxing time between the turn-back operations as shown in FIG. 16 because necessary muscles are trained.

However, when the load application unit 200 shown in FIG. 16 is only the load unit 210, the training has the following drawbacks. That is, as is apparent from FIG. 16, a very large load is applied to the user near the beginning of the operation (time t ₀ ) and the end of the operation (time t ₂ ). By hanging, the user is at risk of damaging joints and damaging muscles. On the other hand, in the case of FIG. 17, the load is originally the most loaded, and the load near the beginning of the motion (time t ₀ ) and near the end of the motion (time t ₂ ) is the lightest. There is a merit that.

On the other hand, when the mechanical spring 80 and the load unit 210 are used as the load application unit 200 as in the present invention (hereinafter, this case is referred to as a hybrid model), the following state is obtained. FIG. 18 is a diagram illustrating changes in load and time acting on the user in the hybrid model. Here, in FIG. 18, the solid line shows the state of load and time change acting on the user in the hybrid model, and the broken line acts on the user in the hybrid model when the inertia of the load unit 210 rising is increased. It shows how the load changes and the time changes. In addition, a two-dot chain line shows a change in load and time acting on the user when the load acting unit 200 is a model having only the load unit 210 as shown in FIG.

In FIG. 18, the spring force of the mechanical spring 80 and the weight of the load unit 210 are adjusted to such an extent that the user can sufficiently operate. For this reason, in the case of FIG. 18, the weight of the load unit 210 is lighter than in the case shown in FIG. 16, and the spring force of the mechanical spring 80 is smaller than in the case shown in FIG. In the case shown in FIG. 18, the weight of the load unit 210 is set to be heavier than half the weight of FIG.

As shown by the solid line in FIG. 18, in the hybrid model, the load acting on the user is the load by the load unit 210 as shown in FIG. 16 and the load (spring force) by the mechanical spring 80 as shown in FIG. Acts at the same time, and the image is close to the composite of them. However, since the load (spring force) due to the mechanical spring 80 is minimized at the initial position, most of the load acting on the user is due to the load unit 210.

As shown by the solid line in FIG. 18, the load acting on the user is smaller in the vicinity of the beginning of the movement (time t ₀ ) than in the case shown by the two-dot chain line in FIGS. Of course, the load is larger than that due to the mechanical spring 80 in the vicinity of the beginning of the movement (time t ₀ ). This is because the mechanical spring 80 has an effect of buffering the impact.

However, in the vicinity of the turning point (time t ₁ ), the spring force due to the extension of the mechanical spring 80 acts, so that the load acting part 200 as indicated by a two-dot chain line in FIGS. 16 and 18 is only the load unit 210. The load acting on the user is greater than that. However, as indicated by a broken line in FIG. 18, depending on the user's contrivance of the training operation, it is possible to make a state in which there is almost no load near the turning point (time t ₁ ). Specifically, such an idea is to increase the inertia of the load unit 210 to rise and resist the mechanical spring 80.

Then, after the turning point (time t ₁ ), the inertia of the load unit 210 dropping gradually increases, while the mechanical spring 80 contracts. For this reason, as shown by a solid line and a broken line in FIG. 18, the load acting on the user changes. In the vicinity of the end of the operation (time t ₂ ), the load acting on the user is smaller than that shown in FIG. 16 due to the effect of buffering the impact of the mechanical spring 80.

As described above, in the hybrid model, as shown by a solid line and a broken line in FIG. For this reason, it is possible to train the turn-back operation similarly to the case indicated by the two-dot chain line in FIGS. 16 and 18b. As indicated by the broken line in FIG. 18, depending on how the inertia is applied, an operation in which there is a relaxing time can be realized between the switching operations as in the case shown in FIG.

In addition, in the hybrid model, an effect of buffering the impact of the mechanical spring 80 can be produced at the beginning (time t ₀ ) and the end (time t ₂ ) of the operation, so that the joint can be prevented from being damaged. Become. As described above, in the hybrid model indicated by the solid line and the broken line in FIG. 18, it is possible to perform an operation for training the turning-back operation and to prevent the joint from being damaged.

Also, in the hybrid model, it is possible to realize not only training that trains turning-back operation but also stretching operation. That is, if the load of the load unit 210 is made lighter and the spring constant of the mechanical spring 80 is increased than in the case of the turning-back operation, the transition of the load acting on the user is changed from that shown by the solid line and the broken line in FIG. It can be used for stretching as well. Thereby, it becomes possible to extend the movable region (movable range) of the body including the legs and arms.

For example, when a specific part of the body does not move so much and rehabilitation of the specific part is required, training (stretching) using the stretching devices 10A to 10C in the first embodiment described above is performed. It is effective. In this case, the training is positioned for beginners. On the other hand, when the training for the turning-back operation is performed only with the load unit 210 as shown in FIG. 16, the training is positioned for advanced users. On the other hand, in the hybrid model, when the training of the turning operation as shown by the solid line and the broken line in FIG. 18 is performed, the positioning of the training can be regarded as a transition process from the beginner to the advanced person. . Therefore, if the weight of the load unit 210 is increased with the progress of the training for the turning operation, it is possible to effectively train the turning operation while reducing the risk of damaging the joint.

As described above, in the stretching device 10D of the present embodiment, the movable range can be expanded as in the stretching devices 10A to 10C described in the first embodiment. Thus, it is possible to perform different training such as a turn-back operation. Therefore, it is possible to increase the power generated instantaneously while the body moves smoothly. In addition, the risk of damaging joints can be reduced.

In addition, the attachment position of the mechanical spring 80 in the stretching apparatus 10D of the present embodiment is not limited to FIG. Other examples are shown in FIGS.

In FIG. 19, the mechanical spring 80 is not attached to the end of the wire 220 on the swing arm 60 side, but is attached to the end of the wire 220 on the load unit 210 side. Even with such a configuration, it is possible to give the user a load similar to that shown in FIG.

In FIG. 20, the mechanical spring 80 is attached to the end of the wire 220 on the side of the swing arm 60 and the end of the wire 220 on the side of the load unit 210. That is, there are two mechanical springs 80. Even with such a configuration, it is possible to give the user a load similar to that shown in FIG. In the configuration shown in FIG. 20, the spring constant of the mechanical spring 80 may be the same, but may be different.

21, the mechanical spring 80 exists in the middle of the wire 220 from the swing arm 60 side to the load unit 210. In FIG. 21, it may be considered that there are two wires 220 and the mechanical spring 80 exists between the two wires 220. Even with such a configuration, it is possible to give the user a load similar to that shown in FIG.

In addition, a configuration in which three or more mechanical springs 80 are connected in series to the load unit 210 is adopted, or a plurality of mechanical springs 80 are provided in parallel to exert a resultant force of the plurality of mechanical springs 80 on the wire 220. Further, a configuration in which the configuration of the parallel mechanical springs 80 that exert the resultant force and another mechanical spring 80 (which may exert the resultant force of the plurality of mechanical springs 80) are connected in series is adopted. Also good.

<Modification>
As described above, the stretching devices 10A, 10B, 10C, and 10D according to the respective embodiments of the present invention have been described, but the present invention can be variously modified in addition to this. This will be described below.

In each of the above-described embodiments, the spring force is adjusted by attaching the attachment / detachment spring 80b to the attachment / detachment slit 721 of the spring attachment portion 72, and the force required to extend the mechanical spring 80 is adjusted. However, the force required to extend the mechanical spring 80 may be adjusted by moving the position of the fulcrum that causes the swing arms 60 and 111 to swing. That is, when the lengths of the swing arms 60 and 111 are constant and the fulcrum is located in the middle of the swing arms 60 and 111, the position of the fulcrum is moved with respect to the swing arms 60 and 111. Thus, the force required to extend the mechanical spring 80 can be adjusted.

Further, for example, a motor whose drive is controlled by the control unit may be used, and the extension degree of the mechanical spring 80 may be adjusted by the motor, and the spring force may be adjusted by adjusting the extension degree.

Further, in addition to the adjustment of the spring force by the method of attaching / detaching the attach / detach spring 80b to the attach / detach slit 721 of the spring attaching portion 72, the spring force may be adjusted by a mechanism as shown in FIGS. . 11 and 12, the upper end side of the detachable spring 80b is attached to the spring mounting bracket 120. The spring mounting bracket 120 has a base portion 121, and a pair of downward extending portions 122 are provided so as to extend downward from the base portion 121 in FIG. A latching portion 80 c on the upper end side of the detachable spring 80 b is latched via the fixing pin 123 between the pair of downward extending portions 122. Further, an upward extending portion 124 is provided so as to extend upward from the base portion 121 in FIG. 11, and a pin insertion hole 124 a is provided in the upward extending portion 124. In addition, a positioning portion 125 is provided at a position that is directed downward from the base portion 121 and is displaced by approximately 90 degrees in the circumferential direction from the above-described downward extending portion 122. This positioning part 125 is a part fitted in the positioning recessed part 132 mentioned later.

A part of the base portion 121 of the spring mounting bracket 120 described above is placed on the fixed plate 130. The fixing plate 130 is provided with a through hole 131 through which the detachable spring 80b and the fixing spring 80a can pass. As shown in FIGS. 11 and 12, the through-hole 131 is provided in a long shape so that all the attachment / detachment springs 80b and the fixed springs 80a can pass therethrough. The through hole 131 is provided with a positioning recess 132 in a direction orthogonal to the longitudinal direction. The positioning recess 125 is fitted into the positioning recess 132, whereby the orientation of the spring mounting bracket 120 is determined.

Further, a top plate 140 is provided above the fixed plate 130 so as to face the fixed plate 130. The top plate 140 has a detachable plate 150 attached to the side close to the seating portion 40 (front side), and a counter plate 160 attached to the back side of the detachable plate 150. Insertion holes 151 and 161 are provided in the detachable plate 150 and the counter plate 160. By inserting the spring mounting pins 170 into these insertion holes 151 and 161, and further inserting the spring mounting pins 170 into the pin insertion holes 124a. The detachable spring 80b is fixed to the top plate side 140. Here, the top plate 140 is provided so as to swing integrally with the swinging portion referred to in the claims. Further, the top plate is connected to the upper ends of a pair of piston rods 180, and the piston rods 180 are provided so as to be able to enter and leave the cylinder 181 receiving the fixed plate 130. Therefore, when the attachment / detachment spring 80b is fixed to the top plate 140 side, when the swinging portion swings, the attachment / detachment spring 80b into which the spring mounting pin 170 is inserted and the fixing spring 80a are extended. .

As described above, the spring force may be adjusted by a spring adjustment mechanism as shown in FIGS.

Further, in each of the above-described embodiments, the spring force of the mechanical spring 80 is stored by extending the mechanical spring 80. However, the mechanical spring 80 may be compressed to store the spring force of the mechanical spring 80.

In each of the above-described embodiments, the case where the mechanical spring 80 is used as the elastic means is described. However, the elastic means is not limited to the mechanical spring 80 which is a coil spring. In other words, any member may be used as long as it is extended or contracted with respect to the swing of the swinging portion and generates an elastic force by the extension or contraction. Examples of such elastic means include rubber, damper, air spring, torsion spring, disc spring, and leaf spring. Moreover, you may make it attach a weight separately for spring force adjustment.

In each of the above-described embodiments, for example, as shown in FIGS. 2 and 3, the detachable slit 721 in the spring mounting portion 72 and the retracting slit 731 in the spring retracting portion 73 are provided so as to form a substantially L shape. ing. However, the attaching / detaching slit 721 and the retracting slit 731 do not need to be provided in a substantially L shape, and may be provided in a straight line (in FIG. 9, a straight slit is shown). In this case, the fixing plate 82b of the upper end mounting portion 82 is a permanent magnet itself, or a permanent magnet is attached to the lower surface of the fixing plate 82b. The spring mounting portion 72 and the spring retracting portion 73 are, for example, You may make it form from a magnetic material attracted | sucked to magnets, such as iron. In this case, the fixing plate 82b is fixed to the spring mounting portion 72 or the spring retracting portion 73 by the magnetic force of the permanent magnet, and the detachable spring 80b (upper end mounting portion 82) is locked to the spring mounting portion 72 or the spring retracting portion 73. The state can be realized.

When the permanent magnet is formed of a material having a strong magnetic force such as neodymium, the locking state of the detachable spring 80b (upper end mounting portion 82) with respect to the spring mounting portion 72 or the spring retracting portion 73 may be made strong. It becomes possible.

Further, the number of the fixing springs 80a and the detachable springs 80b is not limited to the number in the above-described embodiment, and may be any number. Further, the spring force of the plurality of fixed springs 80a and the spring force of the plurality of detachable springs 80b may be uniformly the same spring force, but some of the plurality of fixed springs 80a have different spring forces from the other fixed springs 80a. May be present, and some of the plurality of attachment / detachment springs 80b may have a spring force different from that of the other attachment / detachment springs 80b. For example, the different spring forces in the fixed spring 80a and / or the detachable spring 80b have two, three or more spring forces, and a combination thereof allows fine adjustment according to the muscle strength of the user. May be.

In addition, the change in the spring force before extension and the spring force after extension may be within one to ten. However, in view of the balance between the continuity of movement given to the user and the force required for movement, it is practically necessary. It is preferably about 1: 5.

In the above-described embodiment, the configuration in which the spring attachment portion 72 is attached to the lower connecting portion 64 in the stretching device 10B has been described. However, the spring mounting portion 72 may be provided on the back side of the seating portion 40 on which the user is seated, for example, like a stretching device 10C shown in FIG.

In addition, for a user who is difficult to give a force that resists the mechanical spring 80 by his / her own force, for example, a drive for first moving the swing arms 60 and 111 using auxiliary power such as a motor or an actuator. It is good also as a structure which gives power.

Further, in the second embodiment described above, there is a specific relationship between the mechanical spring 80 and a predetermined muscle (muscle spring). However, in the second embodiment described above, the mechanical spring 80 and the predetermined muscle (muscle spring) may not have a specific relationship. When configured in this way, the effect of stretching to widen the movable region (movable range) of the body including the legs and arms is low. However, it is of course possible to perform training for effectively increasing the switching operation.

10A, 10B, 10C ... Stretching device 20 ... Base part 21 ... Center frame 22 ... Front side frame 23 ... Back side frame 24 ... Leg part 25 ... Support frame 26 ... Front extension part 26a ... Shaft 30 ... Column base part 40 ... Seating part 41 ... Seating frame 42 ... Seat 50 ... Shaft support part 51 ... Shaft 52 ... Bearing 60, 111 ... Swing arm (corresponding to swinging part)
DESCRIPTION OF SYMBOLS 61 ... Holding part 62 ... Vertical extension part 63 ... Zenith holding part 64 ... Downward connection part 65 ... Bearing part 70 ... Spring mechanism part 71 ... Lower side attachment part 72 ... Spring attachment part 73 ... Spring retracting part 74 ... Cover 80 ... Machine Spring 80a ... Fixed spring 80b ... Detachable spring 81, 82 ... Upper end mounting portion 82a ... Holding portion 82b ... Fixed plate 82c ... Shaft 82d ... Locking portion 83 ... Hook portion 90 ... Footrest portion 91 Front extension portion 92 ... Front side mounting portion 93: Rear pressing part 100 ... Load transmission mechanism part 101 ... Pulley 110 ... Opening leg swinging part 111 ... Swing arm 111a ... Extension part 112 ... Lower leg placing part 113 ... Side pressing part 114 ... Heel placing Portion 721 ... Removable slit 721a, 731a ... Orthogonal slit portion 721b, 731b ... Parallel slit portion 731 ... Retraction slit

Claims (8)

1. A swinging part that swings according to the operation of the movable part of the body part of the user to perform stretching,
   A spring mechanism portion that includes elastic means that is extended or contracted with respect to the swing of the swing portion and generates an elastic force by the extension or contraction;
   Have
   The elastic means has a specific relationship with a muscle spring when a user's predetermined muscle is regarded as a spring,
   The specific relationship is that when the elastic force is stored in the elastic means by the swinging of the swinging portion, the muscle spring is relaxed and the spring force of the muscle spring is released. When the elastic force is released, the muscle spring extends and the muscle spring stores the spring force.
   Stretching equipment characterized by that.
2. The stretching device according to claim 1,
   The spring mechanism portion has a spring mounting portion and a spring retracting portion,
   The elastic means is a mechanical spring;
   The mechanical spring is provided with a fixed spring and a detachable spring,
   The fixing spring is non-detachably attached to the spring attachment portion,
   In the spring mounting portion, a detachable slit is formed, and the detachable spring is detachably provided in the detachable slit,
   Furthermore, a retracting slit is formed in the spring retracting portion, and the retracting spring is detachably provided in the retracting slit,
   The attachment / detachment spring that is not attached to the attachment / detachment slit is attached to the retracting slit so that the spring force of the mechanical spring can be adjusted.
   Stretching equipment characterized by that.
3. The stretching device according to claim 2,
   The swing part includes a pair of swing arms having a grip part gripped by a user's hand,
   The spring mounting portion is connected to the opposite side of the gripping portion across the fulcrum in the swing of the swing arm, and the pair of swing arms spaced apart from the support point is open,
   In a state before the user pushes the grip portion by hand, the spring force of the mechanical spring is released and the muscle spring is stretched to store the spring force in the muscle spring,
   When the user first pushes the grip portion by hand, a spring force is stored in the mechanical spring and the muscle spring contracts,
   After the user first pushes the gripping part by hand and gives the momentum to swing the swinging arm, the swinging arm is moved to the mechanical spring after the gripping part is pushed by hand in the next swing. As the spring force is stored, the muscle spring relaxes,
   Stretching equipment characterized by that.
4. The stretching device according to claim 2,
   The swinging portion includes a pair of vertically extending portions extending upward from a fulcrum in swinging, a zenith gripping portion provided in a state of connecting them on the upper side of the pair of vertically extending portions, and the pair of A lower connecting portion provided in a state of connecting these on the lower side of the vertically extending portion,
   The spring mounting portion is provided on the back side or the lower connecting portion from the seating portion on which the user is seated,
   Either the part of the vertically extending part or the zenith gripping part is a part to which the user's hand is pressed from the part on the back side,
   In a state before the user pushes the up-and-down extension part or the zenith gripping part by hand, the spring force of the mechanical spring is released and the muscle spring is extended to store the spring force in the muscle spring,
   After the user first pushes the up-and-down extension part or the zenith gripping part by hand, a spring force is stored in the mechanical spring and the muscle spring contracts,
   The vertical extension part or the zenith gripping part is used in the next and subsequent swings after the user first pushes the vertical extension part or the zenith gripping part by hand to give the swinging force of the swinging part. After a person pushes in by hand, a spring force is stored in the mechanical spring and the muscle spring relaxes.
   Stretching equipment characterized by that.
5. The stretching device according to claim 2,
   A load transmission unit configured to transmit a spring force of the mechanical spring attached to the spring attachment unit to the swing unit;
   The oscillating part is a pair of oscillating arms that oscillate about a fulcrum, and a pair of oscillating arms that are attached to the side of the pair of oscillating arms that are spaced apart from the fulcrum and on which the user's lower leg is placed, respectively. A thigh placement part, and a side pressing part attached to each of the pair of thigh placement parts facing each other,
   In a state before the side pressing portion is pushed by a user's foot, the spring force of the mechanical spring is released and the muscle spring is extended to store the spring force in the muscle spring.
   After the side pressing part is first pushed in by the user's foot, a spring force is stored in the mechanical spring and the muscle spring contracts,
   First, the side pressing portion is pushed by the user's foot in the subsequent swing after the user presses the side pressing portion with his / her foot to give the swinging force to the swinging portion. Later, spring force is stored in the mechanical spring and the muscle spring relaxes.
   Stretching equipment characterized by that.
6. The stretch device according to any one of claims 1 to 5,
   A load unit connected to the elastic means, the load unit having a portion connected in series to the elastic means;
   Stretching equipment characterized by that.
7. The stretching device according to claim 6,
   The swinging portion swings for a turn-back operation in which the load acting on the user is maximized in a short time or the load acting on the user is increased more than other times. It is also possible to do
   The load in the turning operation is a combination of the elastic means and the load unit.
   Stretching equipment characterized by that.
8. Stretch method to expand the movable range of the movable part that wants to stretch out of the body part,
   The stretching method includes a swinging part that swings according to the operation of the movable part, and an elastic means that is expanded or contracted with respect to the swinging of the swinging part and generates an elastic force by the extension or contraction. A stretching mechanism having a spring mechanism,
   The elastic means has a specific relationship with a muscle spring when a user's predetermined muscle is regarded as a spring,
   The specific relationship is that when the elastic force is stored in the elastic means by the swinging of the swinging portion, the muscle spring is relaxed and the spring force of the muscle spring is released. When the elastic force is released, the muscle spring is stretched and performed using a stretching device having a relationship in which the spring force can be stored in the muscle spring.
   Based on the relationship, when the movable part swings the swinging part and the elastic force in the elastic means is stored, the muscle spring relaxes and the muscle spring stores the spring force. Performs the operation of alternately repeating the operation of releasing the elastic force by the elastic means,
   Stretch method characterized by that.

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