JPH11239501A - Back support system for snowboard boots - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a follow-up operation corresponding to the respective positions of a leg part when the leg part of snowboard boots is moved accompanying movement in the horizontal direction from a position of tilting a foot forward. SOLUTION: When a foot is horizontally moved, the track of the third shaft bolt 64 of a leg part 4 of the snowboard boots is roughly swung at an angle αcentering the center O1 of a first shaft bolt 58 first. When the movement of the angle α is completed, the track of the third shaft bolt 64 of the leg part 4 of the snowboard boots becomes the swing operation of the angle β at a radius R2 centering the center O2 . The center O2 is positioned around the inner side of the shoe sole part 1 of the snowboard boots. For the swing, a second link follows up by the swing of the part of a second shaft bolt and the third shaft bolt 64.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a back support system for a snowboard boot. More specifically,
The present invention relates to a back support system for a snowboard boot in which a leg can be tilted in a lateral direction with respect to a sole or a heel portion, further in a front-rear direction, that is, in a biaxial direction.

[0002]

2. Description of the Related Art Snowboarding is a type of ski that slides on snow. The boarding direction of the snowboard boots on the snowboard is usually from the heel to the toe. The riding direction differs in that the ski is riding vertically, parallel to the longitudinal direction of the board, while the snowboard is riding transversely to the longitudinal direction of the board. In order to give a propulsive force to the snowboard, the dominant foot located in the forward direction in the traveling direction must lean forward while leaning forward (lean). That is, the ankle is required to have a laterally inclined posture in addition to the forwardly inclined posture. The movement of tilting outward or in the direction of travel while tilting forward in a direction substantially perpendicular to the direction of travel is especially important for the dominant foot.

Conventionally, a snowboard in which the upper and lower portions, particularly the heel portion and the tubular portion (ankle portion) or the leg portion of the upper portion of the heel portion or the legs relatively rotate around the approximate center line of the snowboard boot, is rotated. The swinging mechanism of the boot is disclosed in German Published Patent Application DE 36 22 746 A1, Japanese Patent Laid-Open No. 7-29890.
No. 2 and the like. In order to obtain such freedom of swing, a hinge mechanism is provided for swinging the legs of the snowboard boot around the axis centering on the upper part of the heel part, which is generally oriented in the front-rear force direction of the foot. Have been.

[0004] It is known that the skeletal structure constituting a human ankle is equivalent to a universal joint having a three-dimensional arch structure. This three-dimensional arch structure makes it difficult for the leg in the upright posture to bend laterally. That is, this three-dimensional arch structure makes it difficult to perform a lateral tilting motion that is not based on a combination with the ankle forward tilting motion. Therefore, it is desirable to have a leg structure of the snowboard boot that can smoothly follow the lateral movement of the foot together with the forward leaning movement of the foot.

[0005] The snowboard boot is made of a flexible material and is fixed to the foot in close contact with the foot, so that it can follow a relatively small movement of the foot. Analyzing the lateral movement of the foot described above is not a simple movement, and it differs particularly depending on the position of the ankle. Assuming that the legs of the snowboard boots move sideways with the rider's feet, following the natural lateral movement of the legs of the snowboard boots will also result in following the lateral movement of the rider's feet. Become.

[0006]

The present invention has been made based on such a technical background, and achieves the following objects.

An object of the present invention is to provide a support system for a snowboard boot which enables the legs of the snowboard boot to move smoothly from a position where the foot is tilted forward, and which can follow the lateral movement.

Another object of the present invention is to provide a snowboard boot that can perform a follow-up operation in accordance with each position of a leg of the snowboard boot when the leg moves in a lateral direction from a position where the foot is tilted forward. To provide a support system.

Still another object of the present invention is to provide a support system for a snowboard boot provided with a stopper mechanism capable of stopping the backward movement of the leg of the snowboard boot when the foot is moved backward.

[0010]

The present invention described below employs the following means to achieve the above object. A back support system for a snowboard boot according to a first aspect of the present invention is a back support system attached to the snowboard boot, wherein the high back support is provided on the snowboard boot and mainly supports the back of the ankle; A link mechanism for finely adjusting the center position of a swing axis capable of swinging the legs of the snowboard boot around an axis extending from the heel to the toe, and connecting the high back support and the legs; Have.

A back support system for a snowboard boot according to a second aspect of the present invention includes a leg for wrapping an outer periphery of an ankle, and a shoe sole formed to be continuous with the leg and supporting a back surface of the foot. A back support system attached to a snowboard boot, wherein the high back support is connected to the sole and mainly supports a back surface of an ankle, and a first portion is swingably connected to the high back support about a first axis. The first link and the second link of the first link
A second portion pivotally connected to the second portion and the second shaft, and a second portion pivotally connected to the second portion and the leg portion to the third shaft;
Consists of links.

According to a third aspect, in the back support system for a snowboard boot according to the second aspect, the distance between the first axis and the second axis is longer than the distance between the second axis and the third axis. good.

According to a fourth invention, in the back support system for a snowboard boot according to the second invention or the third invention, the height of the first axis, the third axis, and the second axis from the shoe sole is set. It is more effective if arranged in order.

A fifth aspect of the present invention is the back support system for a snowboard boot according to the second aspect of the present invention, wherein the first axis, the second axis, and the third axis are arranged in the order of height from the sole. Is more effective.

[0015] A back support system for a snowboard boot according to a sixth aspect of the present invention includes a leg for wrapping the outer periphery of the ankle;
A back support system attached to a snowboard boot having the leg portion and a sole formed to be continuous with a back surface of a foot, the back support system being connected to the sole and mainly supporting a back surface of an ankle. High back support and
A first link in which a first portion is swingably connected to the high back support about a first axis, a second link in which a first portion is swingably connected to the high back support in a second axis, A third link in which a second portion of one link and a first portion are swingably connected by a third shaft, and a second portion and a second portion of the second link are swingably connected by a fourth shaft. Consists of

According to a seventh aspect of the present invention, there is provided a back support system for a snowboard boot, comprising: a leg for wrapping an outer periphery of an ankle;
A back support system attached to a snowboard boot having the leg portion and a sole formed to be continuous with a back surface of a foot, the back support system being connected to the sole and mainly supporting a back surface of an ankle. And a first link having a first portion connected to the back support so as to be swingable about a first axis, and a second portion connected to the leg portion so as to be swingable about a second axis. .

According to an eighth aspect of the present invention, there is provided a back support system for a snowboard boot, comprising: a leg for wrapping an outer periphery of an ankle;
A back support system for a snowboard boot, comprising: a sole formed to be continuous with the legs to support the back of the foot; and a high back support connected to the sole and mainly supporting the back of the ankle. A swing lever provided on the high-back support so as to be swingable, the swing lever being configured to limit the swing of the high-back support and bring one end into contact with a stopper surface formed on the shoe sole. .

A ninth invention is the back support system for a snowboard boot according to the eighth invention, wherein the stopper surface is formed on an upper surface of a heel portion of the sole.

[0019]

[First Embodiment of the Invention] Next, a first embodiment of the present invention will be described. FIG. 1 is a side view showing Embodiment 1 of a snowboat boot equipped with the support system of the present invention. The snowboard boot is roughly composed of a sole 1, a fingertip 2, a heel 3, and a leg 4. Inside the shoe sole 1, the fingertip 2, and the heel 3, there is arranged a synthetic resin heel cup 5 which is arranged on the sole of the shoe and which becomes a core (see FIG. 2). The structure of the heel cup 5 is publicly known and will not be described in detail.

On both sides of the upper portion 6 at the rear of the heel cup 5, three high-back support mounting holes 7, which are through-holes, are formed by piercing in series. Between the high back support mounting holes 7 on both sides, both ends of the strap 10 are swingably connected by a shaft bolt 12 and span.
The strap 10 is disposed at a boundary between the leg 4 and the fingertip 2. If the leg 4 is tilted forward, it will bend at this boundary. Tightening this boundary with the strap 10 is effective for fixing the foot and the snowboard boot.

The strap 10 is provided with a fastener 13 for adjusting the length of the strap 10. By operating the fastener 13, the strap 10 is tightened and unclamped. Since the structure and function of the fastener 13 are well known, a description thereof will be omitted. A similar strap 11 is disposed on the leg 4, and by operating the strap 11, the leg 4 is tightened and fixed integrally with the ankle.
The shoelace 8 is a string for fixing the foot to the snowboard boots. The fixing method is the same as the conventional one, in which the shoelace 8 is crossed over the hook 9 and the foot is fixed to the snowboard boot. is there.

The shaft bolts 12 on both sides of the snowboard boot
, Both ends of the high back support 15 are swingably provided. The high back support 15 is disposed outside the skin 14 of the snowboard boot, and indirectly supports mainly the back of the ankle. The high back support 15 has a function of receiving the pressing force when the ankle is in the backward tilted position and transmitting the pressing force to the heel cup 5,
For this reason, it is made of a hard synthetic resin.

At both ends of the high back support 15, shaft bolts 12 are used to attach the high back support mounting holes 7 of the heel cup 5.
Is connected and fixed. A stopper mechanism 20 is disposed at the lower center of the high back support 15. The stopper mechanism 20 includes the shaft bolt 12 of the high back support 15.
This is a mechanism for restricting only the backward tilting operation centered on the center and bringing one end into contact with a stopper surface 16 formed on the upper surface of the heel cup 5.

At the upper end of the high back support 15, a link mechanism 25 is disposed. The link mechanism 25 transmits the backward tilting operation of the leg 4 to the high back support 15 and transmits the same to the heel cup 5, and swings about the swing axis of the leg 4 and is orthogonal to the swing axis. This is for facilitating the combined movement of the lateral movement in the direction.

FIG. 2A is an enlarged view showing a connecting portion between the high back support and the heel cup, and FIG.
FIG. 3 is a cross-sectional view taken along line bb of FIG. FIG.
It is a rear view of the support system of a snowboard boot. FIG. 4 is a sectional view showing the structure of the snowboard boot and a support system. On both sides of the upper portion 6 at the rear of the heel cup 5, three high-back support mounting holes 7, which are through holes, are formed by piercing in series. An elliptical concave portion 31 is formed at a constant depth on the outer periphery so as to surround the high back support mounting hole 7. Recess 31
On the inner peripheral surface of the substrate, corrugated projections 32 are formed in an uneven shape at a constant pitch.

In the recess 31, a washer 33 is inserted. A wavy projection 34 is formed on the outer peripheral surface of the washer 33 in an uneven shape. Since the wavy projection 32 and the wavy projection 34 have the same shape, the washer 33 is
Can be inserted into The washer 33 has two bolt holes 3
5 are formed. By changing the position of the washer 33 in the concave portion 31, the position of the bolt hole 35 can be changed. That is, there is an effect that the bolt holes 35 are arranged at three positions of the concave portion 31 of the high back support 15.

First, the shaft bolt 12 as a bolt is inserted into the mounting hole 37 of the strap 10, then into the bolt hole 35 of the washer 33, and finally, one of the three high-back supports formed in the heel cup 5. The shaft bolts 12 are sequentially inserted or screwed into nuts 36 disposed on the back surface of the heel cup 5 through the mounting holes 7. As a result, the high back support 15 swings around the bolt hole 35 and the shaft bolt 12 inserted into the high back support mounting hole 7. By selecting any one of the bolt hole 35 and the high-back support mounting hole 7, the swing center can be selected from six positions.

[Stopper Mechanism 20] As shown in FIGS. 3 and 4, on the rear surface of the central portion of the high back support 15, positioning projections 40 are formed in two rows having a rectangular cross section at a constant pitch. . A bolt through hole 41 is formed at an intermediate position of the positioning projection 40. A fixing plate 42 is fixed to the high back support 15 by a fixing bolt 43 and a nut 44 on the positioning protrusion 40.
The fixing plate 42 is formed with positioning projections 45 having a rectangular cross section at a constant pitch.

The positioning projection 4 of the high back support 15
0 and the positioning projections 45 of the fixed plate 42 have the same pitch, so that the fixed plate 42 is engaged and fixed at a desired position. The fixing plate 42 has a concave notch 46 formed therein. A stopper lever 47 is provided in the notch 46 so as to be swingable by a shaft 48. Stopper lever 47
Is constantly urged toward the high back support 15 by a spring 49. Stopper surface 5 of stopper lever 47
0 is a stopper surface 16 formed on the upper surface of the heel cup 5
To stop the swinging of the high back support 15 about the shaft bolt 12.

[Link Mechanism 25] FIG. 4 is a side sectional view of the link mechanism portion of FIG. 1, and FIG. 5 is an enlarged side view of the link mechanism portion. The link mechanism 25 is for supporting the movement of the high back support 15 and the leg 4.
A through hole 55 is formed at the upper end of the high back support 15. A flanged nut 56 is inserted into the through hole 55. A first shaft bolt 58 is screwed into the flanged nut 56, and the first link 5 is connected to the first shaft bolt 58.
One end of 7 is swingably connected.

At the other end of the first link 57, a through hole 59 is formed. A bush is inserted into the through hole 59, and a second shaft bolt 60 is inserted into the hole of the bush.
The tip of the second shaft bolt 60 is screwed into a screw hole 62 formed at one end of the second link 61. Furthermore, the second
A through hole 63 is formed at the other end of the link 61. A bush (not shown) is inserted into the through hole 63, and a third shaft bolt 64 is inserted into the bush.

The third shaft bolt 64 is inserted into a through hole 66 formed at one end of the fixing plate 65. Two spherical washers 67 are inserted into the third shaft bolt 64, and the second link 61 is disposed between the two spherical washers 67.
One spherical washer 67 is screwed into a third shaft bolt 64, which is fixed by a lock nut 68 to the third shaft bolt 6.
Locked to 4. Therefore, the second link 61
Is sandwiched between the spherical washers 67, so that the third shaft bolt 6
Oscillating movement around 4 and slight spherical movement are possible.

A bush 71 is provided on the outer periphery of the third shaft bolt 64.
, And the other end is screwed into the nut plate 70. A back support 72 made of hard synthetic resin is interposed between the nut plate 70 and the fixing plate 65. Similarly, a fixing bolt 75 is arranged on the other end of the fixing plate 65, a bush 76 is arranged on the outer periphery of the fixing bolt 75, and the tip is screwed into a nut plate 70.

After all, the fixing plate 65 on the back support 72,
The third shaft bolt 64 is fixed. One end of the second link 61 is swingably supported by the fixed third shaft bolt 64, and one end of the second shaft bolt 60 is fixed to the other end of the second link 61. One end of a first link 57 is swingably supported at the other end of the high back support 1.
5 is swingably supported. These mechanisms constitute a link mechanism 25 having two links and three sections.

(Operation of First Embodiment) Next, the operation of the first embodiment will be described. In the structure as described above,
When riding on a snowboard (not shown) wearing snowboard boots, the foot is moved to control the speed and direction of the snowboard. When the foot is tilted forward, the foot 4 tilts forward around the ankle (ankle) due to the structure of the human foot, so that the leg 4 of the snowboard boot also leans forward. This leg 4
Is possible because the leg 4 is flexible.

When the foot is tilted backward, the foot 4 is tilted rearward around the ankle (ankle) due to the structure of the human foot, so that the leg 4 of the snowboard boot also tilts rearward. The rearward tilting operation of the leg 4 is performed by the high back support 15 via the link mechanism 25.
Is transmitted to In the backward tilting operation transmitted to the high back support 15, the stopper surface 50 of the stopper lever 47 comes into contact with the stopper surface 16 formed on the upper surface of the heel cup 5 to receive the swing of the high back support 15.
For this reason, the backward tilting operation of the foot is transmitted to the heel cup 5, and this force is transmitted to the snowboard (not shown) to perform the sliding control.

Next, a case where the foot is moved sideways will be described with reference to FIG. Assuming that the toe direction from the heel is the forward direction, when the foot is laterally moved, the locus of the third shaft bolt 64 of the leg 4 of the snowboard boot is as follows. The center of the third shaft bolt 64 first swings about the center O1 of the first shaft bolt 58 by an angle α. That is, the first
The locus of radius R1 is shown around the center O1 of the shaft bolt 58. This movement of the angle α is mechanically a movement around the center O1 of the first shaft bolt 58, so that the movement is smooth.
This movement of the angle α is presumed to be a movement that approximates a swing movement by a circular movement around the ankle of the foot.

Further, when the movement of the angle α is completed, the trajectory of the third shaft bolt 64 of the leg 4 of the snowboard boot is shifted to the center O.
The swing operation is performed at an angle β with a radius R2 centered at 2. The center O2 is located near the inside of the sole 1 of the snowboard boot. This swing is caused by the second link 61 being connected to the second shaft bolt 60.
And the third shaft bolt 64 swings and follows. This is presumed to be due to a change from swinging around the ankle to swinging around the heel.

As can be understood from the first embodiment of the present invention as described above, since the link mechanism has two links and three sections, the third shaft bolt 64 of the leg 4 of the snowboard boot is used.
Can follow even if the radius changes. That is, the link mechanism 25 constitutes a fine adjustment mechanism corresponding to the complicated movement of the swing of the leg 4 of the snowboard boot.

[Second Embodiment] In the link mechanism 25 according to the first embodiment of the present invention, the first shaft bolt 58 is disposed at the lowest position in the shoe sole position, and the second shaft bolt 60 is disposed. Is located between positions higher than the third shaft bolt 64. The movement locus of the third shaft bolt 60 is a movement locus of a specific position of the leg 4 of the snowboard boot, and the locus of the leg 4 does not always draw the same locus.

The link mechanism 80 shown in FIGS. 6 and 7 is the same as the link mechanism 25 of the first embodiment in that it is a two-link, three-node link mechanism. Are identical. The difference from the link mechanism 25 of the first embodiment is that the position of the third shaft bolt 60 is different. That is, when the first shaft bolt 58 is set to the reference position, the second shaft bolt 60 is located at the position of the height H1, and the third shaft bolt 60 is fixed to the leg 4 of the snowboard boot.
The shaft bolt 64 is positioned at the height H2, and has a relationship of H2> H1.

As described above, it is more effective to employ this mechanism based on the movement locus of the fixed position of the third shaft bolt 64 to the leg 4. That is, this mechanism is employed when the movement locus of the fixed position of the third shaft bolt 64 on the leg portion 4 is an arc locus close to the radius H2 around the first shaft bolt 58.

[Third Embodiment of the Invention] The link mechanism 25 and the link mechanism 80 according to the first and second embodiments of the present invention are a two-link, three-node link mechanism. 8 and 9 show a four-bar parallel link mechanism 85.
It is. That is, the four-bar parallel link mechanism 85 is
This mechanism is used when the entire leg 4 is moved laterally instead of making a part of the leg move circularly. The lower end of the first link 87 is swingably provided on the high back support 15 by the first shaft bolt 86, and the lower end of the third link 91 is swingably provided by the fourth shaft bolt 92.

The upper end of the first link 87 is connected to the second shaft bolt 88
To swingably connect with one end of the second link 89,
The second shaft bolt 88 is fixed to the leg 4. 2nd link 89
Is connected to the upper end of the third link 91 by a third shaft bolt 90 so as to be swingable, and the third shaft bolt 90 is connected to the leg 4.
Fixed to. Eventually, the high back support 15, the first shaft bolt 86, the first link 87, the second shaft bolt 88, the second link 89, the third shaft bolt 90, the third link 91, and the fourth shaft bolt 92 are four-node parallel links. The mechanism 85 is constituted.

The second shaft bolt 88 and the third shaft bolt 90
Is fixed to the leg 4 of the snowboard boot, so that the leg 4 follows the lateral movement of the foot and moves in parallel, that is, the same horizontal movement as the plane direction of the shoe sole.

Fourth Embodiment FIG. 10 is an enlarged side view of a link mechanism 95 according to a fourth embodiment of the present invention. The link mechanism 95 according to the fourth embodiment of the present invention is a one-link, two-node link mechanism. This link mechanism 95
If the back support 72 is considered to be a rigid body, it is a fixed chain mechanism, but the actual back support 72 is not a fixed chain mechanism because it has some flexibility as described above.

First section 97 composed of first shaft bolt 58
Is connected to the first shaft bolt 58 such that one end of the first link 96 is swingable. This swing mechanism is the same mechanism as in the first embodiment, and a detailed description thereof will be omitted. A through hole 98 is formed at the other end of the first link 96. A second shaft bolt 99 is inserted into the through hole 98, and the other end of the first link 96 can swing on the second shaft bolt 99.

That is, the second shaft bolt 99 and the through hole 98 of the first link 96 constitute a second node 100. The fixing of the second shaft bolt 99 to the back support 72 is the same as that of the first embodiment, and the description thereof is omitted. Since the link mechanism 95 according to the fourth embodiment of the present invention is a one-link, two-node link mechanism, the movement is restricted mechanically as compared with the above-described embodiment, but there is an advantage that a simple mechanism may be used. .

FIGS. 11 and 12 show another example of the fourth embodiment of the present invention. FIG. 11 is a view of the snowboard boots when viewed from the back, and FIG.
It is sectional drawing cut | disconnected by c line. On the back of the rear part of the heel cup 5, a first joint support 1 made of a Y-shaped metal plate
The lower part of 01 is fixed with rivets 102. A lower end of a first link 103 is swingably connected to an upper end of the first node support bracket 101 by a shaft 104.
The shaft 104 forms a first section 105.

The upper end of the first link 103 is rotatably supported by a shaft 104 on a leg back support 106. The shaft 104 forms a second node 107. After all, the link mechanism 110 constitutes a one-link, two-node link mechanism similar to the link mechanism 95 described above. Since the link mechanism 110 is configured by using the first-section support bracket 101, the height of the first section 105 can be set to an arbitrary position, and
The adjustment range of the position of the node 105 has been widened. Further, the link mechanism 110 has an advantage that the link mechanism 110 can be arranged also on a back support having a low height like the heel cup 5.

[0051]

As described in detail above, the back support system for snowboard boots of the present invention follows the natural movement of the legs of the snowboard boots, so that the rider does not feel uncomfortable and has good maneuverability. There is.

[Brief description of the drawings]

FIG. 1 is a side view showing a snowboard boot according to a first embodiment of the present invention.

FIG. 2A is an enlarged view of a connecting portion between a high back support and a heel cup, and FIG.
It is sectional drawing cut | disconnected by the bb line of (a).

FIG. 3 is a rear view showing a snowboard boot according to the first embodiment of the present invention.

FIG. 4 is a side sectional view of a link mechanism part of FIG. 1;

FIG. 5 is an enlarged side view of a link mechanism portion.

FIG. 6 is a rear view showing a snowboard boot according to Embodiment 2 of the present invention.

FIG. 7 is a side sectional view of a link mechanism portion according to a second embodiment of the present invention.

FIG. 8 is a rear view showing a snowboard boot according to Embodiment 3 of the present invention.

FIG. 9 is a side sectional view of a link mechanism portion according to a third embodiment of the present invention.

FIG. 10 is a side sectional view of a link mechanism portion according to a fourth embodiment of the present invention.

FIG. 11 shows another example of the fourth embodiment of the present invention.

FIG. 12 is a sectional view taken along line cc of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sole part 2 ... Fingertip part 3 ... Heel part 4 ... Leg part 5 ... Heel cup 12 ... Shaft bolt 15 ... High back support 16 ... Stopper surface 20 ... Stopper mechanism 25, 80, 95 ... Link mechanism 33 ... Washer 42 ... Fixed Plates 57, 96 First link 58 First shaft bolt 60, 99 Second shaft bolt 61 Second link 64 Third shaft bolt 65 Fixed plate 85 Four-node parallel link mechanism 110 Link mechanism

Claims (9)

[Claims] 1. A back support system attached to a snowboard boot, comprising: a high back support provided on the snowboard boot for mainly supporting the back of an ankle; and a shaft extending from the heel of the snowboard boot to the toe. A snowboard boot comprising a link mechanism for finely adjusting a center position of a swing shaft capable of swinging a leg portion of the snowboard boot, and connecting the high back support and the leg portion. Back support system. 2. A back support system attached to a snowboard boot having a leg for wrapping an outer periphery of an ankle, and a sole formed to be continuous with the leg and supporting a back surface of the foot, A high-back support connected to the sole of the shoe for supporting mainly the back of the ankle; a first link having a first portion swingably connected to the high-back support about a first axis; A snowboard comprising: a first portion pivotally connected to two portions and a second shaft; and a second link connected to the second portion and the leg portion to be swingable about a third axis. Boot back support system. 3. The back support system for a snowboard boot according to claim 2, wherein the distance between the first axis and the second axis is equal to the distance between the second axis and the third axis.
A back support system for snowboard boots, which is longer than the distance from the axle. 4. The back support system for a snowboard boot according to claim 2, wherein the first axis, the third axis, and the second axis are arranged in the order of height from the sole. A back support system for snowboard boots. 5. The back support system for a snowboard boot according to claim 2, wherein the height of the first axis, the second axis, and the third axis from the sole is in the order of height. Back support system for snowboard boots. 6. A back support system attached to a snowboard boot having a leg for wrapping an outer periphery of an ankle, and a sole formed to be continuous with the leg and supporting a back surface of the foot, A high-back support connected to the sole of the shoe for mainly supporting the back of the ankle; a first link having a first portion swingably connected to the high-back support with a first axis; and a first link to the high-back support. A second link whose portion is swingably connected by a second shaft; a second portion of the first link and a first portion swingably connected by a third shaft; and a second portion and the second portion. A back support system for a snowboard boot, wherein a second portion of the link comprises a third link slidably connected to a fourth axis. 7. A back support system attached to a snowboard boot having a leg for wrapping an outer periphery of an ankle, and a sole formed to be continuous with the leg and supporting a back surface of a foot, A back support connected to the sole and mainly supporting a back surface of an ankle; a first portion is swingably connected to the back support about a first axis, and a second portion is connected to the leg portion by a second portion. A back support system for a snowboard boot, comprising: a first link rotatably connected to a shaft. 8. A leg for wrapping an outer periphery of the ankle, a sole formed to be continuous with the leg and supporting the back of the foot, and connected to the sole to mainly support the back of the ankle. A back support system for a snowboard boot, comprising: a high back support for swinging the high back support; the high back support restricts the swing of the high back support, and has one end on a stopper surface formed on the shoe sole. A back support system for a snowboard boot, comprising: a swing lever for making contact. 9. The back support system for a snowboard boot according to claim 8, wherein the stopper surface is formed on an upper surface of a heel portion of the shoe sole. .