JP7085232B2 - Ski crampons and ski crampons set - Google Patents

Description

The present invention relates to ski crampons that can reduce both skiing and backward slipping of skis when climbing or skewing a snowy mountain. Further, the present invention relates to a ski crampon set including a ski crampon and a fixing tool for fixing the ski crampon to a ski.

For mountain skiing and telemark skiing, a non-slip attachment is attached to the ski when climbing a snowy mountain. As such a non-slip attachment, ski crampons described in Patent Document 1 are known. The ski crampons in the same document are a mounting plate mounted on the surface of the ski, a pair of anti-skid blades that protrude from both sides of the mounting plate in the width direction toward the back surface of the mounting plate and extend in the front-rear direction, and one of the anti-skid blades. It is provided with a backslip prevention blade that is fixed to the blade and extends toward the side of the other sideslip prevention blade. In the width direction, a gap is provided between the other anti-skid blade and the anti-slip blade on the back side of the mounting plate to insert the ski when the ski crampons are mounted on the ski. ..

When the ski crampons of Patent Document 1 are attached to the ski, the skid prevention blades project downward from the sides of both edges in the width direction of the ski and extend in the front-rear direction. The anti-slip blade extends in a direction intersecting the anti-skid blade below the back surface of the ski. Therefore, when the skier puts his weight on the ski, the anti-skid blades and the anti-slip blades that intersect each other bite into the snow surface. As a result, skiing of the ski and slipping backward can be reduced at the same time, which facilitates climbing.

Japanese Unexamined Patent Publication No. 2010-157779

In the above ski crampons, a gap is provided between the other anti-skid blade and the anti-slip blade. Therefore, when skiing on a steep slope of a snowy mountain, if one of the anti-skid blades to which the anti-slip blade is fixed is located on the valley side and the other anti-skid blade is located on the mountain side, the ski will slip backward. There is a problem that it cannot be sufficiently reduced.

That is, on steep slopes, the skier travels with the edge of the ski on the mountain side. As a result, the edge on the mountain side of the ski is sunk on the snow surface, and the edge on the valley side is in a floating state. Therefore, when ski crampons are attached, the other anti-skid blade located on the mountain side sufficiently bites into the snow surface, but one anti-skid blade located on the valley side is compared with the other anti-skid blade. Then, the bite into the snow surface becomes shallow. Here, there is no backslip prevention blade in the vicinity of the other side slip prevention blade that bites deeply into the snow surface on the mountain side. On the other hand, the anti-slip blade is fixed to one of the anti-slip blades on the valley side, but since the one anti-slip blade does not bite into the snow surface shallowly, the anti-slip blade can be applied to the snow surface. The bite becomes shallow. As a result, the skier cannot sufficiently reduce the slip of the ski to the rear, so that the skier must reduce the angle of skew, and it becomes difficult to gain altitude by skewing.

Here, if the anti-slip blade is bridged between the pair of anti-slip blades, the anti-slip blade can be made to bite into the snow surface regardless of the direction of skew, and the ski can slip backward. Can be reduced. However, if the anti-slip blades are bridged over a pair of anti-skid blades, the snow on the surface of the snow surface where the anti-slip blades are between the pair of anti-skid blades as the skier travels on the snow surface. Will scratch. Further, since there is no gap between the sideslip prevention blade and the backslip prevention blade, the snow scratched by the backslip prevention blade stays in front of the backslip prevention blade and hinders the skier from advancing. Therefore, a load is applied to the skier when moving forward.

In view of these points, the subject of the present invention is ski crampons and ski crampons that can reduce ski slips and backward slips of the ski regardless of the direction of skew, and can suppress an increase in the load applied to the skier when moving forward. It is to propose a set.

In order to solve the above problems, the ski Eisen of the present invention has a mounting plate attached to the surface of the ski and both sides of the ski in the width direction projecting to the back surface side of the ski. An Eisen body comprising a pair of anti-skid blades extending in the front-rear direction, a plate-shaped anti-slip blade straddling the pair of anti-skid blades and extending the back surface side of the ski in the width direction, and the above. It has an urging mechanism for urging the backslip prevention blade, and the pair of sideslip prevention blades are provided with a support portion over which the backslip prevention blade is bridged, and the support portion is the backslip prevention blade. Between the first position, which extends along the back surface of the ski and the cutting edge faces rearward, and the second position, which stands up from the back surface of the ski and the cutting edge faces the opposite side of the ski. The urging mechanism is characterized in that the rear slip prevention blade is urged to the second position.

In the ski crampons of the present invention, the anti-slip blades are bridged over a pair of anti-slip blades extending in the front-rear direction on both sides in the width direction of the ski. Therefore, there is no gap between each of the pair of sideslip prevention blades and the backslip prevention blade. As a result, regardless of the direction of skewing, the portion of the backslip prevention blade near the sideslip prevention blade located on the mountain side can be made to bite into the snow surface. Therefore, the slip of the ski to the rear can be reduced regardless of the direction of skewing. The electronic stability control blade has a first position extending along the back surface of the ski and the cutting edge facing backward, and a second position standing up from the back surface of the ski and having the cutting edge facing the opposite side of the ski. It is supported by a pair of anti-skid blades so that it can swing between them. Therefore, when the skier advances the ski as it travels on the snow surface, the backslip prevention blade can be moved from the second position to the first position. As a result, the backslip prevention blade can prevent or suppress the scratching of snow, so that it is possible to suppress an increase in the load applied to the skier when moving forward. Further, the backslip prevention blade is urged to the second position by the urging mechanism. Therefore, when the skier lifts the ski from the snow surface and takes a step, the backslip prevention blade is placed in a second position that stands up from the back surface of the ski. Therefore, when the skier steps on the snow surface, the backslip prevention blade can be made to bite into the snow surface. Further, as the skier descends the snow surface, the backslip prevention blade is arranged in a first position extending along the back surface of the ski. Therefore, it is possible to prevent the backslip prevention blade from hindering the sliding.

In the present invention, the support portion is provided with a pair of support holes penetrating in the width direction in each skid prevention blade, and the backslip prevention blade is a main body located between the pair of skid prevention blades in the width direction. A pair of penetrating portions penetrating the support hole on both sides of the main body portion, and a pair of protruding portions located on the opposite side of the penetrating portion from the main body portion and located outside the pair of skid prevention blades. The opening edge of the support hole in the skid prevention blade is a first opening edge portion that abuts on the backslip prevention blade from the side of the ski plate when the backslip prevention blade is in the first position. And a second opening edge portion that comes into contact with the backslip prevention blade from the front when the backslip prevention blade is in the second position, and the urging mechanism attaches the backslip prevention blade to the second. It can be urged to the opening edge portion. By doing so, it becomes easy to swingably support the backslip prevention blade between the first position and the second position by the support portions provided on each of the pair of sideslip prevention blades. Further, the urging mechanism makes it easy to urge the rear slip prevention blade to the second position.

In the present invention, the penetration portion is thicker in the front-rear direction than other portions of the penetration portion at a portion located at the side end of the ski plate when the anti-slip blade is in the second position. The thick portion comprises a meat portion, and the thick portion is the first at the opening edge of the support hole in the sideslip prevention blade when the urging mechanism urges the backslip prevention blade to the second opening edge portion. It can be in contact with the inside corner where the opening edge portion and the second opening edge portion intersect. By doing so, the thick portion comes into contact with the inside corner of the opening edge of the support hole of each skid prevention blade, so that when the backslip prevention blade is displaced between the first position and the second position, each It is possible to prevent the penetration portion from being worn. In addition, since the contact area between the through portion and the inside corner of the support hole increases, it is possible to prevent the inside corner of the opening edge of the support hole of each sideslip prevention blade from being worn by contact with the backslip prevention blade. Alternatively, it can be suppressed. Further, the backslip prevention blade is displaced between the first position and the second position in a state where the thick portion is in contact with the inside corner of the opening edge of the support hole. Therefore, the movement of the post-slip prevention blade that is displaced between the first position and the second position becomes smooth.

In the present invention, one of the pair of support holes may be provided with a hole portion through which the backslip prevention blade can pass in the width direction. In this way, after fixing the crampon body to the ski, the backslip prevention blade is inserted into the back surface side of the ski plate through the through hole of one side slip prevention blade, and the backslip prevention blade is inserted. It can be bridged over the support holes of a pair of skid prevention blades.

In the present invention, each anti-skid blade is provided with a notch groove that communicates with the support hole from the side of the blade edge of the anti-skid blade, and the width of the notch groove is equal to or larger than the thickness of the anti-slip blade. Can be. By doing so, after fixing the crampon body to the ski, the backslip prevention blade is arranged on the back surface side of the ski through the notch groove, and the backslip prevention blade is provided as a support hole for the pair of sideslip prevention blades. Can be bridged to. When the backslip prevention blade is supported by each support hole through the notch groove, the length dimension from the base end to the cutting edge of the backslip prevention blade is set from the support hole to the open end of the notch. Can be larger than the length dimension. That is, the length dimension from the base end of the backslip prevention blade to the cutting edge can be made larger than the length dimension from the mounting plate of the sideslip prevention blade to the cutting edge. Therefore, it becomes easy to increase the climbing force of ski crampons.

In the present invention, each of the pair of protrusions is provided with a through hole on the side closer to the ski when the backslip prevention blade is arranged at the second position, and the urging mechanism can be expanded and contracted. The rope comprises a rope with an elastic portion, the rope having a first knot that abuts from the rear on the opening edge portion of the through hole in one of the protrusions when the backslip prevention blade is placed in the second position. And, from the rear to the front, passing through the through hole of one of the protrusions, passing through the surface side of the ski, and from the front to the rear of the other protrusion. It may be provided with a routing portion that passes through the through hole and a second knot that abuts from the rear on the opening edge of the through hole at the other protrusion. In this way, the backslip prevention blade can be urged to the second position by the rope provided with the elastic portion. Further, the rope provided with the elastic portion can prevent the backslip prevention blade from falling off from the support portion provided on the pair of sideslip prevention blades. Furthermore, if the backslip prevention blade is urged to the second position by a rope provided with an elastic portion, the weight is lighter and the ski is lighter than the case where the backslip prevention blade is urged by using a metal spring member or the like. It is possible to suppress troubles caused by freezing such as snow attached to crampons. Here, the routing portion may be routed around the surface of the mounting plate or may be routed around the surface of the ski as long as it is on the side of the surface of the ski.

In the present invention, the rope comprises a first nylon rope and a second nylon rope made of nylon, and a stretch rope having elasticity, and the first nylon rope includes the first knot and one of the protrusions. The second nylon rope is provided with the second knot and passes through the through hole of the other protruding portion, passing through the through hole of the portion and reaching the opposite side of the mounting plate from the ski plate. The mounting plate reaches the side opposite to the ski plate, and the stretch rope is located on the surface side of the ski plate between the first nylon rope and the second nylon rope in the width direction. Can be extended to. In this way, it is easy to provide the rope with an elastic portion. Further, in this way, the nylon rope made of nylon having high wear resistance is routed around the snow surface, the anti-skid blade, and the portion in contact with the anti-slip blade. Therefore, it is possible to prevent or suppress the rope from being cut due to wear.

In the present invention, the first nylon rope and the one-sided end portion of the stretch rope in the width direction are connected, and the second nylon rope and the other end portion of the stretch rope in the width direction are connected to each other. The locking mechanism is detachably connected via a locking mechanism, and the locking mechanism includes a locking portion provided on one of the stretch rope and the second nylon rope, and the stretch rope and the second nylon rope. It may be provided with a locked portion provided on the other side of the rope. In this way, the rope can be split between the stretch rope and the second nylon rope. Therefore, the rope is attached to the backslip prevention blade in a divided state, and after the backslip prevention blade is laid over the pair of sideslip prevention blades, the stretch rope is placed on the opposite side of the mounting plate from the ski plate via the locking mechanism. If the second nylon rope is connected to the rope, the urging mechanism can be configured by the rope. In addition, the rope can prevent the backslip prevention blades from falling off from the pair of sideslip prevention blades.

In the present invention, the first nylon rope and the one-sided end portion of the stretch rope in the width direction are tied to the second nylon rope and the other end portion of the stretch rope in the width direction. Is tied, the rear slip prevention blade is provided with a rope insertion notch groove communicating with the through hole in one of the protrusions, and the first nylon rope is provided with the rope insertion notch groove. The width dimension of the notch groove for inserting the rope may be equal to or less than the diameter of the through hole. In this way, the first nylon rope can be inserted into the through hole through the notch groove for inserting the rope, and the first knot can be brought into contact with the opening edge portion of the through hole in one of the protrusions from the rear. can. Therefore, it becomes easy to connect the rope to the back slip prevention blade.

Next, the ski Eisen set of the present invention includes the above-mentioned ski Eisen, a fixing tool for attaching the Eisen main body to the ski plate, a fastening bolt for fastening and fixing the fixing tool to the surface of the ski plate, and the Eisen main body. The ski has a fall-out prevention mechanism that prevents the ski from falling off, the mounting plate having a non-circular opening, and the fixture having the same thickness as the mounting plate. Intervenes between the locking plate and the base, a base that can be fitted to the ski, a non-circular locking plate attached to the base in a state of being rotatable about a rotation axis perpendicular to the ski, and the locking plate. The locking plate has a spacer, and the locking plate has a first rotation position located inside the opening when viewed from the direction of the rotation axis in a state where the base is fitted in the opening, and the opening. It rotates between a second rotation position having a locking portion protruding from the portion to the outer peripheral side, and the dropout prevention mechanism is such that the locking plate has the first rotation position and the second rotation position in the mounting plate. A protrusion protruding toward the locking plate is provided in a region overlapping the rotation locus that rotates between the two, and the protrusion is closer to the second rotation position than the locking plate arranged at the first rotation position. The protrusion is provided at a position that does not overlap with the locking plate arranged at the second rotation position when viewed from the rotation axis direction, and the protrusion dimension of the protrusion is shorter than the thickness dimension of the spacer. Can be.

When mounting ski crampons on a ski using the ski crampon set of the present invention, first, the locking plate is placed at the first rotation position on the base fixed to the ski. Next, the base and the locking plate are passed through the opening of the mounting plate so that the base is fitted into the opening. After that, the locking plate is rotated and placed at the second rotation position. As a result, the locking plate is provided with a locking portion that protrudes from the opening of the mounting plate to the outer peripheral side. Therefore, the mounting plate is sandwiched between the ski plate and the locking plate from the direction of the rotation axis. Therefore, the ski crampons are attached to the ski so as not to fall off. Here, the fixative has a spacer interposed between the base and the locking plate. Therefore, it is easy to rotate the locking plate even when snow is attached to the base. Therefore, it is easy to attach ski crampons to the ski while the snowy mountain is in progress. Further, the ski crampons include a pair of anti-skid blades that bite into the snow surface and a pair of anti-slip blades that are bridged over the pair of anti-skid blades. Therefore, as the skier travels on the snow surface, skiing of the ski and slipping backward can be reliably reduced.

Here, the ski crampons can be displaced on the ski by the thickness of the spacer provided in the fixture. On the other hand, since the ski crampons are provided with a plurality of blades, the reaction force that the ski crampons receive from the snow surface becomes large when the skier travels on the snow surface. Therefore, when the skier travels on the snow surface, the ski crampons are displaced on the ski due to the reaction force from the snow surface. When the ski crampons are displaced on the skis, the ski crampons mounting plate may come into contact with the locking plate of the fixture and rotate the locking plate in the direction from the second rotation position to the first rotation position. When the locking plate rotates and reaches the first rotation position, the ski crampons fall off the ski.

To deal with such problems, the ski crampons set is provided with a fall prevention mechanism for preventing the ski crampons from falling off the ski. The dropout prevention mechanism is a protrusion provided in a region of the mounting plate that overlaps with the rotation locus of the locking plate. The protrusion is provided on the side of the second rotation position with respect to the locking plate arranged at the first rotation position, and at a position not overlapping with the locking plate arranged at the second rotation position. Therefore, when the ski crampons are displaced by the reaction force from the snow surface when the locking plate is placed in the second rotation position and the mounting plate is lifted from the ski plate, the protrusions lock the locking plate. The portion can be contacted from the side of the first rotation position. Therefore, even when the ski crampons are repeatedly displaced on the ski, it is possible to prevent the locking plate from rotating from the second rotation position and reaching the first rotation position. On the other hand, the protruding dimension of the protrusion is shorter than the thickness dimension of the spacer. Therefore, if the mounting plate and the ski plate are brought into close contact with each other when the ski crampons are mounted on the ski plate, the protrusion and the locking plate interfere with each other even if the protrusion is provided in the area where the rotation locus of the locking plate overlaps. There is nothing to do.

By attaching the ski crampons of the present invention to a ski, it is possible to reliably reduce skiing and backward slip of the ski when traveling on a steep slope of a snowy mountain, regardless of the direction of the ski. Further, when the skier advances the snow surface, the backslip prevention blade can be moved from the second position to the first position, so that the backslip prevention blade can prevent or suppress the scratching of the snow. Therefore, by providing the backslip prevention blade, it is possible to suppress an increase in the load applied to the skier when moving forward. Further, the backslip prevention blade is urged to the second position by the urging mechanism. Therefore, when the skier lifts the ski from the snow surface and takes a step, the backslip prevention blade is arranged in a second position that stands up from the back surface of the ski. Therefore, when the skier steps on the ski, the backslip prevention blade can be made to bite into the snow surface.

Further, since the ski crampon set of the present invention is provided with a spacer between the base and the locking plate, the locking plate can be rotated even when snow or the like adheres to the base of the fixture. Therefore, ski crampons can be attached to the skis while the snowy mountain is in progress. In addition, the fall prevention mechanism can prevent or prevent the ski crampons from falling off the ski.

It is a side view of the state where the ski crampons are attached to the ski with the fixture. It is a front view of the state which the ski crampons are attached to the ski. It is a top view of the state where the ski crampons are attached to the skis. It is explanatory drawing of the state which the ski crampons were removed from a ski. It is sectional drawing of the fixture. It is a side view of the ski crampons of the modification 1. It is a side view of the ski crampons of the modification 2. It is a side view of the ski crampons of the modification 3. It is a front view, a plan view, and a side view of the back slip prevention blade of ski crampons of modification 3. FIG.

Hereinafter, embodiments of a ski crampon set to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is a side view showing a state in which ski crampons are attached to a ski with a fixture. FIG. 2 is a front view showing a state in which ski crampons are attached to a ski with a fixture. FIG. 3 is a plan view of a state in which ski crampons are attached to a ski plate by a fixing tool. FIG. 4 is an explanatory diagram of a state in which ski crampons are removed from the ski.

As shown in FIG. 1, the ski crampon set 1 of the present invention includes a ski crampon 2 and a fixture 5 for attaching the ski crampon 2 to the surface 3a of the ski plate 3. Further, as shown in FIG. 3, the ski crampon set 1 includes four fastening bolts 6 for fastening and fixing the fixture 5 to the surface 3a of the ski plate 3.

Hereinafter, a state in which the ski crampons 2 are attached to the ski plate 3 using the fixture 5 will be described. Further, in the following, the front-rear direction of the ski plate 3 and the width direction of the ski plate 3 are defined as the front-rear direction X and the width direction Y of the ski crampons 2, respectively. Further, the front of the ski plate 3 is the front X1 of the ski crampons, and the rear of the ski plate is the rear X2 of the ski crampons. Further, the vertical direction perpendicular to the ski plate 3 when the ski plate 3 is horizontal is defined as the vertical direction Z of the ski crampons 2. Further, the direction in which the front surface 3a of the ski plate 3 faces is the upper Z1, and the direction in which the back surface 3b of the ski plate 3 faces is the lower Z2.

(Ski Eisen)
As shown in FIG. 1, the ski crampons 2 have a mounting plate 11 attached to the surface 3a of the ski plate 3 and both sides of the ski plate 3 in the width direction Y projecting toward the back surface 3b of the ski plate 3 in the front-rear direction. It has a pair of anti-skid blades 12 extending to X and a crampon body 10 comprising. The crampon body 10 is provided with a mounting plate 11 and a pair of skid blades by bending a single sheet metal made of stainless steel. Further, as shown in FIG. 2, the ski crampons 2 have a plate-shaped anti-slip blade 13 that extends over the pair of sideslip prevention blades 12 of the ski crampons body 10 and extends on the back surface 3b side of the ski plate 3 in the width direction Y. To prepare for. The backslip prevention blade 13 is a plate member made of an aluminum alloy. Further, the ski crampons 2 are provided with a rope 14 (a urging mechanism) connected to both ends of the backslip prevention blade 13 in the width direction Y and routed through the surface of the mounting plate 11.

As shown in FIGS. 3 and 4, the mounting plate 11 has a rectangular plate portion 16 long in the width direction Y, a front bending portion 17 that bends upward Z1 from the front end edge of the plate portion 16, and a plate portion 16. A rear bending portion 18 that bends upward Z1 from the rear end edge is provided. A rectangular opening 19 long in the width direction Y is provided in the central portion of the plate portion 16. The four corners of the opening 19 are bordered in a rounded shape. A protrusion 20 is provided on the front side of the opening 19 on the upper surface of the mounting plate 11. The protrusion 20 is formed at the center of the plate portion 16 in the width direction Y. The shape of the protrusion 20 when viewed from above Z1 is a semicircular shape, and the arc portion is provided on the side of the opening 19.

As shown in FIGS. 1 and 4, the pair of sideslip prevention blades 12 are plate-shaped, and bend downward Z2 from both end edges of the plate portion 16 in the width direction Y and extend in the vertical direction Z and the front-rear direction X. Each of the sideslip prevention blades 12 has a rectangular shape that is long in the front-rear direction X as a whole. The lower end edge of each sideslip prevention blade 12 is slightly inclined downward Z2 toward the rear X2. Each sideslip prevention blade 12 is provided with notches 21 on the lower end edge at two positions separated by X in the front-rear direction. As a result, each sideslip prevention blade 12 is provided with three blade portions 22 separated from each other in the front-rear direction X at the lower end edge. As shown in FIG. 2, each blade portion 22 becomes thinner in the width direction Y toward the lower Z2. The lower end of each blade portion 22 is the cutting edge of the sideslip prevention blade 12.

The pair of sideslip prevention blades 12 include a support portion 24 that swingably supports the backslip prevention blades 13. The support portion 24 includes a pair of support holes 25 that penetrate each skid prevention blade 12 in the width direction Y. In this example, each support hole 25 is provided in the upper Z1 of the blade portion 22 at the front end of each sideslip prevention blade 12. As shown in FIG. 1, the support hole 25 provided in one of the sideslip prevention blades 12 has a first opening edge portion 25a extending in the front-rear direction X at a position close to the back surface 3b of the ski plate 3 and a first opening edge portion. A second opening edge portion 25b extending downward Z2 from the front end of the 25a is provided. The first opening edge portion 25a is slightly inclined downward Z2 toward the rear X2. The second opening edge portion 25b is slightly inclined rearward X2 toward the lower Z2. Further, the support hole 25 has a predetermined arc opening edge portion 25c that curves upward Z1 from the lower end of the second opening edge portion 25b toward the rear X2, and a first opening edge portion 25a from the upper end of the arc opening edge portion 25c. The third opening edge portion 25d extending in parallel with a gap and the fourth opening edge portion 25e extending in the vertical direction Z to connect the rear end of the first opening edge portion 25a and the rear end of the third opening edge portion 25d. And prepare.

As shown in FIG. 4, the support hole 25 provided in the other side slip prevention blade 12 has a first opening edge portion 25a extending in the front-rear direction X at a position close to the back surface 3b of the ski plate 3 and a first opening edge portion. A second opening edge portion 25b extending downward from the front end of 25a and an arc opening edge portion curved upward Z1 from the second opening edge portion 25b toward the rear X2 and continuing to the rear end of the first opening edge portion 25a. 25c and. When viewed from the width direction Y, the first opening edge portion 25a, the second opening edge portion 25b, and the arc opening edge portion 25c of the pair of support holes 25 overlap each other. The support hole 25 provided in the other side slip prevention blade 12 may have the same shape as the support hole 25 provided in the one side slip prevention blade 12.

Here, as shown in FIG. 2, the backslip prevention blade 13 is formed into the pair of sideslip prevention blades 12 in a state where both end portions in the width direction Y are penetrated through the respective support holes 25 of the pair of sideslip prevention blades 12. It is crossed over. As a result, the backslip prevention blade 13 has a main body portion 31 located between the pair of sideslip prevention blades 12 in the width direction Y, and a pair of penetration portions 32 penetrating the support holes 25 on both sides of the main body portion 31. A pair of projecting portions 33 located on the opposite side of the penetrating portion 32 from the main body portion 31 and outside the pair of sideslip prevention blades 12 are provided.

In a state where the backslip prevention blades 13 are bridged over the pair of sideslip prevention blades 12, the backslip prevention blades 13 have a first opening edge portion 25a upward Z1 (of the ski plate 3) as shown by a dotted line in FIG. The first position 13A that abuts on the backslip prevention blade 13 from the side) and the second position 13B where the second opening edge portion 25b abuts on the backslip prevention blade 13 from the front X1 as shown by the solid line in FIG. It is supported so that it can swing between. At the first position 13A, the backslip prevention blade 13 extends along the back surface 3b of the ski plate 3 and the blade tip 13a faces the rear X2. At the second position 13B, the backslip prevention blade 13 stands up from the back surface 3b of the ski plate 3 and the blade tip 13a faces the side opposite to the ski plate 3 (lower Z2).

As shown in FIG. 2, the main body portion 31 has a blade portion 34 having a width taper in the width direction Y toward a direction away from the ski plate 3 when the backslip prevention blade 13 is arranged at the second position 13B. A plurality of pieces are continuously provided in the direction Y. In this example, the backslip prevention blade 13 includes three blade portions 34. The pair of penetrating portions 32 are rectangles whose shape when viewed from the front X1 when the rear slip prevention blade 13 is arranged at the second position 13B is long in the vertical direction Z. Each of the pair of penetrating portions 32 protrudes from the upper end portion of the main body portion 31 on both sides in the width direction Y. As can be seen from FIGS. 1 and 2, the penetration portion 32 has a length dimension corresponding to the length dimension of the second opening edge portion 25b of the support hole 25.

The pair of protrusions 33 are rectangular in shape that is long in the vertical direction when the rear slip prevention blade 13 is arranged at the second position 13B when viewed from the front X1. The pair of projecting portions 33 continuously extend in the width direction Y from each penetrating portion 32, and have a rectangular extending portion 35 located outside the pair of sideslip prevention blades 12 and projecting upward Z1 from the extending portion 35. It is provided with a rectangular portion 36 to be formed. Each rectangular portion 36 is located above Z1 above the support hole 25 when the backslip prevention blade 13 is arranged at the second position 13B. Each of the pair of protrusions 33 is provided with a through hole 33a on the side closer to the ski plate 3 when the backslip prevention blade 13 is arranged at the second position 13B. In this example, the through hole 33a is provided at the upper end portion of the extending portion 35.

Here, as shown in FIG. 1, the separation dimension D in which the first opening edge portion 25a and the third opening edge portion 25d of the support hole 25 provided in one of the sideslip prevention blades 12 are separated from each other is the backslip prevention blade. It is longer than the thickness dimension of 13. Further, by setting the backslip prevention blade 13 in a posture along the first opening edge portion 25a, it is possible to pass the backslip prevention blade 13 in the width direction Y of the support hole 25. That is, one of the support holes 25 includes a hole portion 25f through which the backslip prevention blade 13 can pass in the width direction Y.

Next, as shown in FIGS. 2 and 3, the rope 14 comes into contact with the opening edge of the through hole 33a in the one protruding portion 33 of the rear slip prevention blade 13 from the rear X2 and from the rear X2. Through hole 33a of one protrusion 33 toward the front X1, passing through the side of the mounting plate 11 opposite to the ski plate 3, and passing through the through hole of the other protrusion 33 from the front X1 toward the rear X2. It comprises a routing portion 42 that passes through 33a and a second knot 43 that abuts from the rear X2 on the opening edge of the through hole 33a in the other protrusion 33.

Here, the rope 14 includes an elastic portion that can be expanded and contracted. In this example, the rope 14 includes a first nylon rope 45 and a second nylon rope 46 made of nylon, and a stretch rope 47 having elasticity. The first nylon rope 45 includes a first knot 41, passes through a through hole 33a of one of the protrusions 33 from the rear X2 to the front X1, and reaches the side of the mounting plate 11 opposite to the ski plate 3. The second nylon rope 46 includes a second knot 43, passes through the through hole 33a of the other protruding portion 33 from the rear X2 to the front X1, and reaches the side of the mounting plate 11 opposite to the ski plate 3. The stretch rope 47 extends in the width direction Y between the first nylon rope 45 and the second nylon rope 46 on the side of the mounting plate 11 opposite to the ski plate 3. Further, the tip of the first nylon rope 45 and the one end portion of the stretch rope 47 on one side in the width direction Y are connected. The tip of the second nylon rope 46 and the other end portion of the stretch rope 47 on the other side in the width direction Y are detachably connected via a locking mechanism 48.

The locking mechanism 48 includes a metal hook 49 (locking portion) attached to the end portion of the stretch rope 47 and a metal chain 50 (locked portion) attached to the end portion of the first nylon rope 45. ) And. The chain 50 is formed by connecting a plurality of rings 50a, and a hook 49 can be locked to each ring 50a. The chain 50 may be provided on the stretch rope 47, and the hook 49 may be provided on the second nylon rope 46.

(Fixture)
FIG. 5 is an exploded sectional view of the fixture 5. Next, as shown in FIG. 4, the fixture 5 is attached to the base 55 fitted to the opening 19 of the mounting plate 11 and the base 55 in a state of being rotatable around a rotation axis L perpendicular to the ski plate 3. The locking plate 56 is provided. Further, as shown in FIG. 1, the fixture 5 has a spacer 57 that is arranged coaxially with the locking plate 56 and is interposed between the locking plate 56 and the base 55. More specifically, the base 55 has a planar shape that fits into the opening 19 provided in the mounting plate 11. Further, the base 55 has the same thickness dimension as the plate portion 16 of the mounting plate 11. As shown in FIG. 3, a bolt 58 penetrates the central portion of the base 55 from the side of the ski plate 3 toward the upper Z1. Fixing holes 59 for fastening bolts 6 are provided at the four corners of the base 55.

The planar shape of the locking plate 56 as seen from above Z1 is a rectangular shape as a whole. The central portion of each side of the locking plate 56 that defines the planar shape is curved inward. As shown in FIG. 5, a circular recess 61 recessed in the lower Z2 is provided in the central portion of the upper surface of the locking plate 56. At the center of the circular recess 61, a through hole 62 that penetrates the locking plate 56 in the vertical direction Z is provided.

The locking plate 56 is rotatably attached to the base 55 in a state where the bolt 58 protruding from the base 55 is passed through the through hole 62. When the bolt 58 is passed through the through hole 62, the annular spacer 57 is passed through the bolt 58 in advance. As a result, the spacer 57 is arranged coaxially with the locking plate 56 and intervenes between the base 55 and the locking plate 56. The spacer 57 is a plastic washer. After that, a plastic washer 63, a stainless steel washer 64, and a spring washer 65 are attached to the bolt 58 penetrating the through hole 62 of the locking plate 56 in this order. These washers 63 to 65 are housed in the circular recess 61. Then, the nut 66 is tightened to the bolt 58 from the upper Z1. As a result, the locking plate 56 is attached to the base 55 in a state where it can rotate around the rotation axis L that coincides with the axis of the bolt 58.

The locking plate 56 is between the first rotation position 56A where the whole overlaps with the base 55 when viewed from above Z1 and the second rotation position 56B which rotates 90 ° around the rotation axis L from the first rotation position 56A. Rotate with. As shown by a solid line in FIG. 4, when the locking plate 56 at the first rotation position 56A is viewed from above Z1, the locking plate 56 does not have a portion protruding from the base 55 to the outer peripheral side. As shown in FIG. 3, when the locking plate 56 at the second rotation position 56B is viewed from above Z1, the locking plate 56 has a pair of locking portions 68 protruding from the base 55 in the front-rear direction X. Be prepared.

Here, the protrusion 20 provided on the crampon main body 10 is provided in a region overlapping the rotation locus of the locking plate 56 on the mounting plate 11. Further, the protrusion 20 is located on the side of the second rotation position 56B with respect to the locking plate 56 arranged at the first rotation position 56A and at a position not overlapping with the locking plate 56 arranged at the second rotation position 56B. It is provided. The locking plate 56 of the fixative 5 and the protrusion 20 of the crampon body 10 constitute a dropout prevention mechanism 70 that prevents the crampon body 10 from falling off the ski plate 3. The protruding dimension T of the protrusion 20 of the mounting plate 11 is shorter than the thickness dimension S of the spacer 57. In this example, the thickness dimension of the spacer 57 is 1 mm, and the protruding dimension of the protrusion 20 is 0.5 mm.

(Mounting ski crampons on skis)
When the ski crampons 2 are mounted on the skis 3 using the ski crampons set 1, as shown in FIG. 4, the locking plate 56 is mounted on the base 55 fixed to the surface 3a of the skis 3 by the fastening bolts 6. Is placed at the first rotation position 56A. Next, the base 55 and the locking plate 56 are passed through the opening 19 of the mounting plate 11 so that the base 55 is fitted into the opening 19.

After that, the locking plate 56 is rotated and arranged at the second rotation position 56B. As a result, as shown in FIGS. 1 and 3, the locking plate 56 includes a pair of locking portions 68 projecting from the opening 19 of the mounting plate 11 toward the outer peripheral side. Therefore, the mounting plate 11 is sandwiched between the ski plate 3 and the pair of locking portions 68 of the locking plate 56 from the rotation axis L direction. Therefore, the crampon body 10 is attached to the ski plate 3 so as not to fall off.

Here, the fixative 5 has a spacer 57 interposed between the base 55 and the locking plate 56. Therefore, even when snow is attached to the base 55, it is easy to rotate the locking plate 56. Therefore, the ski crampons 2 can be attached to and detached from the ski plate 3 while the snowy mountain is in progress. The mounting plate 11 of the crampon body 10 is provided with a protrusion 20 in a region overlapping with the rotation locus of the locking plate 56, but the protrusion dimension T of the protrusion 20 is shorter than the thickness dimension S of the spacer 57. Therefore, if the locking plate 56 is rotated while the mounting plate 11 and the ski plate 3 are in close contact with each other, the protrusion 20 and the locking plate 56 interfere with each other, and the rotation of the locking plate 56 is hindered. There is no.

Next, as shown in FIG. 4, the post-slip prevention blade 13 to which the rope 14 is connected is prepared. Then, the locking mechanism 48 keeps the rope 14 in a separated state. After that, the backslip prevention blade 13 is oriented along the first opening edge portion 25a of the support hole 25 of one of the sideslip prevention blades 12 and penetrates the support hole 25 from the width direction Y. Then, the backslip prevention blade 13 is bridged between the pair of sideslip prevention blades 12. That is, the other penetration portion 32 and the other protrusion 33 of the backslip prevention blade 13 are passed through the support hole 25 of the other skid prevention blade 12, and the other protrusion 33 is arranged outside the skid prevention blade 12. .. Further, a state in which one of the through portions 32 of the backslip prevention blade 13 is passed through the support hole 25 of one of the sideslip prevention blades 12, and one of the protruding portions 33 is located outside the one of the sideslip prevention blades 12. And.

After that, the first nylon rope 45 and the stretch rope 47 are pulled out on the side of the mounting plate 11 opposite to the ski plate 3. Further, the second nylon rope 46 is pulled out to the outside of the skid prevention blade 12 through the support hole 25 of the other skid prevention blade 12. Then, the second nylon rope 46 is routed on the side of the mounting plate 11 opposite to the ski plate 3, and the stretch rope 47 is routed along the upper surface of the mounting plate 11. After that, the hook 49 attached to the stretch rope 47 is locked to the ring 50a of the chain 50 attached to the second nylon rope 46. Here, in the state where the second nylon rope 46 and the stretch rope 47 are connected, the portion of the rope 14 that is routed along the upper surface of the mounting plate 11 is the backslip prevention blade 13 located at the second position 13B. It is located in front of X1.

When the second nylon rope 46 and the stretch rope 47 are connected, the rope 14 can prevent the backslip prevention blade 13 from falling out of the pair of support holes 25. Further, the rope 14 urges the rear slip prevention blade 13 to the second position 13B. That is, the elastic force of the stretch rope 47 urges the rear slip prevention blade 13 from the rear X2 to the front X1 via the first knot 41 of the first nylon rope 45 and the second knot 43 of the second nylon rope 46. As a result, the backslip prevention blade 13 is supported at the second rotation position 56B where the second opening edge portion 25b comes into contact with the front X1.

Further, when the backslip prevention blade 13 is displaced from the second position 13B to the side of the first position 13A, the portion above the through hole 33a in each of the pair of protrusions 33 of the backslip prevention blade 13 is the second from the rear X2. 1 Contact the nylon rope 45 and the second nylon rope 46. Then, as shown by the dotted line in FIG. 1, the portion above the through hole 33a in each of the pair of protrusions 33 of the backslip prevention blade 13 moves the first nylon rope 45 and the second nylon rope 46 to the lower Z2. pull. As a result, the stretch rope 47 is stretched, and the backslip prevention blade 13 is urged toward the second rotation position 56B by the elastic force that restores the shape of the stretch rope 47. Therefore, the backslip prevention blade 13 returns to the second rotation position 56B.

Since the chain 50 attached to the first nylon rope 45 includes a plurality of rings 50a, the elastic force of the stretch rope 47 can be adjusted by selecting the ring 50a for locking the hook 49 attached to the stretch rope 47. can do. As a result, the urging force of the rope 14 for urging the rear slip prevention blade 13 to the second rotation position 56B can be adjusted.

(Effect of ski crampons)
In the ski crampons 2 of this example, the backslip prevention blades 13 are bridged over a pair of sideslip prevention blades 12 extending in the front-rear direction X on both sides of the ski plate 3 in the width direction Y. Therefore, there is no gap between each of the pair of sideslip prevention blades 12 and the backslip prevention blade 13. As a result, regardless of the direction of skewing, the portion of the backslip prevention blade 13 near the sideslip prevention blade 12 located on the mountain side can be made to bite into the snow surface. Therefore, the slip of the ski 3 to the rear X2 can be reduced regardless of the direction of skewing.

Further, the backslip prevention blade 13 extends along the back surface 3b of the ski plate 3 and has a first position 13A in which the blade edge 13a faces the rear X2, and the blade edge 13a stands up from the back surface 3b of the ski plate 3 and the blade edge 13a is the ski plate 3. Is supported by a pair of skid prevention blades 12 in a swingable state between the second position 13B facing the opposite side. Therefore, when the skier advances the ski plate 3 when advancing the snow surface, the backslip prevention blade 13 moves from the second position 13B to the first position 13A. As a result, it is possible to prevent or suppress the back slip prevention blade 13 from scratching the snow when moving forward, so that it is possible to suppress an increase in the load applied to the skier.

Further, the backslip prevention blade 13 is urged to the second position 13B by the elastic rope 14. Therefore, when the skier raises the ski 3 from the snow surface and takes a step, the backslip prevention blade 13 is arranged at the second position 13B standing up from the back surface 3b of the ski 3. Therefore, when the skier steps on the snow surface, the backslip prevention blade 13 can be made to bite into the snow surface. Further, when descending the snow surface, the backslip prevention blade 13 extends along the back surface 3b of the ski plate 3 and is arranged at the first position 13A where the blade tip 13a faces the rear X2. Therefore, it is possible to prevent the backslip prevention blade 13 from inhibiting the sliding.

Further, in this example, the support holes 25 provided in the pair of skid prevention blades 12 include a first opening edge portion 25a that abuts on the backslip prevention blade 13 from the side of the ski plate 3 and a backslip prevention blade 13 that is second. It is provided with a second opening edge portion 25b that comes into contact with the rear slip prevention blade 13 from the front X1 when it is at the position 13B. Then, the elastic rope 14 urges the rear slip prevention blade 13 to the second opening edge portion 25b. Therefore, the pair of support holes 25 makes it easy to swingably support the rear slip prevention blade 13 between the first position 13A and the second position 13B. Further, it is easy to urge the back slip prevention blade 13 to the second position 13B by the rope 14. Further, since the support hole 25 includes an arc-shaped arc opening edge portion 25c, when the backslip prevention blade 13 moves between the first position 13A and the second position 13B, the through portion of the backslip prevention blade 13 32 can be guided by the arc opening edge portion 25c.

Further, in this example, one of the pair of support holes 25 includes a hole portion 25f through which the backslip prevention blade 13 can pass in the width direction Y. Therefore, after the crampon body 10 is attached to the ski plate 3, the backslip prevention blade 13 is inserted into the back surface 3b side of the ski plate 3 via the hole portion 25f of the through hole 62 of one side slip prevention blade 12, and then rearward. The anti-slip blades 13 can be bridged over a pair of anti-slip blades 12.

Further, in this example, since the backslip prevention blade 13 is urged by the rope 14 provided with the elastic portion, it is lighter than the case where the backslip prevention blade 13 is urged by using a metal spring member or the like. Yes, troubles caused by freezing can be suppressed.

Further, the rope 14 includes a first nylon rope 45 and a second nylon rope 46 made of nylon, and a stretch rope 47 having elasticity. Therefore, it is easy to provide the rope 14 with an elastic portion. Further, the first nylon rope 45 includes a first knot 41, passes through a through hole 33a of one of the protruding portions 33, and reaches the side opposite to the ski plate 3 of the mounting plate 11. The second nylon rope 46 includes a second knot 43, passes through the through hole 33a of the other protruding portion 33, and reaches the side of the mounting plate 11 opposite to the ski plate 3. As a result, the portions where the first nylon rope 45 and the second nylon rope 46, which have high wear resistance, come into contact with the snow surface, the sideslip prevention blade 12, and the backslip prevention blade 13 are routed. Therefore, it is possible to prevent or suppress the rope 14 from being cut due to wear.

Further, in this example, the main body portion 31 has a blade portion 34 that tapers in the width direction Y toward the direction away from the ski plate 3 when the backslip prevention blade 13 is arranged at the second position 13B. A plurality of Y are provided in succession. Therefore, even when the snow surface is frozen, it becomes easy for the backslip prevention blade 13 to bite into the snow surface.

Here, since the fixture 5 has a spacer 57 interposed between the base 55 and the locking plate 56, it is easy to rotate the locking plate 56 even when snow is attached to the base 55. ..

On the other hand, when the ski Eisen 2 is fixed to the ski plate 3 using the fixative 5, the ski Eisen 2 skis by the thickness of the spacer 57 arranged between the base 55 and the locking plate 56. It can be displaced on the plate 3. Further, since the ski crampons 2 are provided with a plurality of blades, when the skier travels on the snow surface, the reaction force received by the ski crampons 2 from the snow surface becomes large. Therefore, when the skier travels on the snow surface, the ski crampons 2 are displaced on the ski plate 3 due to the reaction force from the snow surface. When the ski Eisen 2 is displaced on the ski plate 3, the mounting plate 11 of the ski Eisen 2 comes into contact with the locking plate 56 and rotates the locking plate 56 in the direction from the second rotation position 56B to the first rotation position 56A. May cause you to. When the locking plate 56 rotates and reaches the first rotation position 56A, the ski crampons 2 fall off from the ski plate 3.

To deal with such problems, the ski crampon set 1 includes a fall prevention mechanism 70 that prevents the ski crampons 2 from falling off the ski plate 3. The fall-off prevention mechanism 70 is on the side of the second rotation position 56B with respect to the locking plate 56 arranged at the first rotation position 56A in the region overlapping with the rotation locus of the locking plate 56 in the mounting plate 11, and is the second. It is provided at a position that does not overlap with the locking plate 56 arranged at the rotation position 56B. Therefore, when the locking plate 56 is located at the second rotation position 56B, the ski Eisen 2 is displaced by the reaction force from the snow surface and the mounting plate 11 is lifted from the ski plate 3, and the protrusion 20 is locked. The locking portion 68 of the plate 56 can be contacted from the side of the first rotation position 56A. Therefore, even when the ski Eisen 2 repeatedly displaces on the ski plate 3, it is possible to prevent the locking plate 56 from rotating from the second rotation position 56B and reaching the first rotation position 56A.

When the ski crampons 2 are removed from the ski plate 3, the connection between the stretch rope 47 and the second nylon rope 46 is released. Next, the backslip prevention blade 13 is pulled out from one of the support holes 25 in the width direction Y, and the backslip prevention blade 13 is removed from the crampon main body 10. After that, the locking plate 56 of the fixture 5 is returned from the second rotation position 56B to the first rotation position 56A. As a result, the locking plate 56 is in a state of completely overlapping with the base 55, and is in a state of not having a pair of locking portions 68 protruding from the opening 19 of the mounting plate 11 to the outer peripheral side. Therefore, the ski crampons 2 can be removed from the ski plate 3 and the fixture 5.

(Modified example of ski crampons)
FIG. 6 is a side view of the ski crampons of the modified example 1. FIG. 7 is a side view of the ski crampons of the modified example 2. The ski crampons 2A of the modified example 1 and the ski crampons 2B of the modified example 2 have the same configuration as the ski crampons 2 described above except for the shape of the support hole 25 provided in the support portion 24. Therefore, the shape of the support hole 25 will be described, and other description will be omitted.

As shown in FIG. 6, the ski crampon 2A of the first modification has a support hole 25 having a substantially triangular shape. The support hole 25 includes a first opening edge portion 25a extending in the front-rear direction X at a position close to the back surface 3b of the ski plate 3, and a second opening edge portion 25b extending downward Z2 from the front end of the first opening edge portion 25a. Be prepared. The first opening edge portion 25a is slightly inclined downward Z2 toward the rear X2. The second opening edge portion 25b is slightly inclined rearward X2 toward the lower Z2. Further, the support hole 25 includes a third opening edge portion 25g extending upward Z1 from the lower end of the second opening edge portion 25b toward the rear X2 and connected to the rear end of the first opening edge portion 25a. Here, by setting the backslip prevention blade 13 in a posture along the first opening edge portion 25a, it is possible to pass the backslip prevention blade 13 in the width direction Y of the support hole 25. That is, one of the support holes 25 is provided with a hole portion 25f through which the backslip prevention blade 13 can pass in the width direction Y.

Also in the ski crampons 2A of this example, the backslip prevention blades 13 can be swingably supported by using the support holes 25 provided in each of the pair of sideslip prevention blades 12.

As shown in FIG. 7, the ski crampon 2A of the second modification is provided with a fan-shaped support hole 25. The support hole 25 has a first opening edge portion 25a extending in the front-rear direction X at a position close to the back surface 3b of the ski plate 3, a second opening edge portion 25b extending downward Z2 from the front end of the first opening edge portion 25a, and a second. 2 The arc opening edge portion 25c which curves upward Z1 from the lower end of the opening edge portion 25b toward the rear X2 and is connected to the rear end of the first opening edge portion 25a is provided. Further, in this example, the support portion 24 includes a notch groove 75 communicating with the support hole 25 from the blade edge side of the blade portion 22 of each sideslip prevention blade 12. The width D1 of the notch groove 75 is equal to or larger than the thickness of the back slip prevention blade 13.

According to this example, after the crampon main body 10 is fixed to the ski plate 3, the backslip prevention blade 13 is arranged on the back surface 3b side of the ski plate 3 via the notch groove 75, and the backslip prevention blades 13 are paired. Can be bridged over the skid prevention blade 12 of.

Further, when the backslip prevention blade 13 is supported by each support portion 24 via the notch groove 75, the length dimension from the base end of the backslip prevention blade 13 to the cutting edge 13a is set to the side slip prevention blade 12. It can be made larger than the length dimension from the plate 11 to the cutting edge. Therefore, it becomes easy to increase the climbing force of the ski crampons 2B.

The backslip prevention blade 13 may be made of stainless steel.

Further, in ski crampons 2, 2A and 2B, the rope 14 may be routed along the surface 3a of the ski plate 3. In this case, the rope 14 is located in front X1 of the front bending portion 17 of the mounting plate 11, and the stretch rope 47 extends in the width direction Y along the surface 3a of the ski plate 3. In this way, the front bent portion 17 comes into contact with the rope 14 from the rear X2. Therefore, when the backslip prevention blade 13 is displaced, the rope 14 does not move to the rear X2. Therefore, the movement of the back slip prevention blade 13 is stable.

FIG. 8 is a side view of the ski crampons of the modified example 3. FIG. 9 is a front view, a plan view, and a side view of the rear slip prevention blade of the ski crampons of the modified example 3. The front view of FIG. 9A shows a state in which a rope is attached to the backslip prevention blade. In the plan view of FIG. 9 (b) and the side view of FIG. 9 (c), the rope is omitted.

The ski crampon 2C of the modification 3 includes the same crampon body 10 as the ski crampon 2A of the modification 1. The rear slip prevention blade 100 and the rope 14A of the ski crampons 2C of the modification 3 are different from the ski crampons 2A of the first embodiment. Here, since the ski crampon 2C of the modification 3 has a configuration corresponding to the ski crampon 2A of the modification 1, the corresponding configuration will be described with the same reference numerals. In the following description, the back side of the drawing 8 is one side in the width direction Y, and the front side is the other side in the width direction.

The backslip prevention blade 100 is made of an aluminum alloy or stainless steel. As shown in FIG. 9, the backslip prevention blade 100 has a main body portion 31 located between a pair of sideslip prevention blades 12 in the width direction Y and a pair of penetration portions penetrating the support holes 25 on both sides of the main body portion 31. 32 and a pair of projecting portions 33 located on the opposite side of each penetrating portion 32 from the main body portion 31 and outside the pair of sideslip prevention blades 12. The main body portion 31 includes three blade portions 34 that taper in the width direction Y in the width direction Y. Each blade portion 34 is connected by an arc-shaped blade edge 13a recessed in the upper Z1.

The pair of penetrating portions 32 are rectangles whose shape when viewed from the front X1 when the rear slip prevention blade 100 is arranged at the second position 13B is long in the vertical direction Z. Each of the pair of penetrating portions 32 protrudes from the upper end portion of the main body portion 31 on both sides in the width direction Y. Each penetration portion 32 is located at the upper end (the end portion on the side of the ski plate 3) when the backslip prevention blade 100 is arranged at the second position 13B, in the front-rear direction with respect to the other portion of the penetration portion 32. X is provided with a thick thick portion 32a. In this example, each penetrating portion 32 is formed with a tongue piece portion extending upward Z1 in advance, and the thick portion 32a is provided by folding the tongue piece portion toward the rear X2 toward the lower Z2.

The pair of protrusions 33 are rectangular in shape that is long in the vertical direction when the rear slip prevention blade 100 is arranged at the second position 13B when viewed from the front X1. The upper corner portion and the lower corner portion of each protrusion 33 have a rounded shape. The pair of projecting portions 33 continuously extend in the width direction Y from each penetrating portion 32, and have a rectangular extending portion 35 located outside the pair of sideslip prevention blades 12 and projecting upward Z1 from the extending portion 35. It is provided with a rectangular portion 36 to be formed. Each rectangular portion 36 is located above Z1 above the support hole 25 when the backslip prevention blade 100 is arranged at the second position 13B. Each of the pair of protrusions 33 is provided with a through hole 33a on the side closer to the ski plate 3 when the backslip prevention blade 100 is arranged at the second position 13B. Each through hole 33a is provided at the upper end portion of the extending portion 35.

Here, in this example, one of the protruding portions 33 is provided with a notch groove 33b for inserting a rope communicating with the through hole 33a. The notch groove 33b for rope insertion is bent in the width direction Y from the first groove portion 33c extending downward Z2 from the through hole 33a and the first groove portion 33c, and is on the opposite side of the penetrating portion 32 of one of the protruding portions 33. A second groove 33d reaching the edge is provided. The end of the second groove 33d opposite to the first groove 33c is opened in the width direction Y at the end opposite to the penetrating portion 32 of the one protruding portion 33. Here, the width dimension D1 of the notch groove 33b for inserting the rope is a dimension in which the rope 14A can be inserted. Further, the width dimension D1 of the notch groove 33b for inserting the rope is equal to or less than the diameter D2 of the through hole 33a. The diameter D of the through hole 33a is smaller than that of the first knot 41 and the second knot 43.

Next, the rope 14A includes a first nylon rope 45, a second nylon rope 46, and a stretch rope 47. The first nylon rope 45 includes a first knot 41. The second nylon rope 46 includes a second knot 43. The second nylon rope 46 passes through the through hole 33a of the other protrusion 33 from the rear X2 to the front X1, and the second knot 43 abuts from the rear X2 on the opening edge of the through hole 33a in the protrusion 33. The end of the first nylon rope 45 opposite to the first knot 41 is tied to one end of the stretch rope 47. The end of the second nylon rope 46 opposite to the second knot 43 is tied to the other end of the stretch rope 47.

(Mounting of ski crampons of Example 3 on skis)
When the ski Eisen 2C is attached to the ski plate 3, the Eisen main body 10 is fixed to the ski plate 3 by the fixing tool 5. Next, the backslip prevention blade 100 is bridged over each support hole 25 of the pair of sideslip prevention blades 12. Further, as shown in FIG. 8, the rope 14A is routed along the surface 3a of the ski plate 3 at the front X1 of the front bending portion 17 of the mounting plate 11. As a result, the stretch rope 47 extends in the width direction Y along the surface 3a of the ski plate 3. After that, while pulling the first nylon rope 45 in the width direction Y, it is inserted into the through hole 33a of one of the protruding portions 33 through the rope insertion notch groove 33b. Then, the first knot 41 is brought into contact with the opening edge of the through hole 33a in one of the protruding portions 33 from the rear X2. Therefore, it is easy to connect the rope 14A to the backslip prevention blade 100.

Here, when the first knot 41 is brought into contact with the opening edge of the through hole 33a from the rear X2, the rear slip prevention blade 100 is urged to the second position 13B by the rope 14A. When the backslip prevention blade 100 is urged to the second position 13B by the rope 14A, as shown in FIG. 8, the thick portion 32a of each penetration portion 32 of the backslip prevention blade 100 becomes the side slip prevention blade 12. At the opening edge of the support hole 25, the first opening edge portion 25a and the second opening edge portion 25b abut on the inside corner portion 25h where they intersect. Therefore, when the backslip prevention blade 100 is displaced between the first position 13A and the second position 13B, it is possible to suppress the wear of each penetrating portion 32. Further, since the contact area between the through portion 32 and the inner corner portion 25h of the support hole 25 increases due to the formation of the thick portion 32a, the inner corner portion 25h of the support hole 25 wears due to the contact with the backslip prevention blade 100. This can be prevented or suppressed. Further, the backslip prevention blade 100 is displaced between the first position 13A and the second position 13B in a state where the thick portion 32a is in contact with the inside corner portion 25h of each side slip prevention blade 12. Therefore, as compared with the case where the backslip prevention blade 100 does not have the thick portion 32a, the movement of the backslip prevention blade 100 that is displaced between the first position 13A and the second position 13B becomes smoother.

The rope 14A may have a stretch rope 47 routed along the upper surface of the mounting plate 11. Further, the backslip prevention blade 100 and the rope 14A of this example can be used in place of the backslip prevention blade 13 and the rope 14 in the ski crampons 2 and 2B.

1 ... Ski Eisen set, 2, 2A, 2B, 2C ... Ski Eisen, 3 ... Ski plate, 3a ... Front side, 3b ... Back side, 5 ... Fixture, 6 ... Fastening bolt, 10 ... Eisen body, 11 ... Mounting plate, 12 ... Side slip prevention blade, 13, 100 ... Back slip prevention blade, 13A ... First position, 13B ... Second position, 14 ... Rope, 16 ... Plate part, 17 ... Front bending part, 18 ... Rear bending part, 19 ... opening, 20 ... protrusion, 21 ... notch, 22 ... blade, 24 ... support, 25 ... support hole, 25a ... first opening edge, 25b ... second opening edge, 25c ... arc opening edge Part, 25d ... Third opening edge part, 25e ... Fourth opening edge part, 25f ... Hole part, 25h ... Inside corner part, 31 ... Main body part, 32 ... Penetration part, 32a ... Thick part, 33 ... Protruding part, 33a ... Through hole, 33b ... Rope insertion notch groove, 33c ... First groove part, 33d ... Second groove part, 34 ... Blade part, 35 ... Extension part, 36 ... Rectangular part, 41 ... First knot, 42 ... Route, 45 ... 1st nylon rope, 46 ... 2nd nylon rope, 47 ... Stretch rope, 48 ... Locking mechanism, 49 ... Hook (locking part), 50 ... Chain (locked part), 50a ... Ring , 55 ... base, 56 ... locking plate, 56A ... first rotation position, 56B ... second rotation position, 57 ... spacer, 58 ... bolt, 61 ... circular recess, 62 ... through hole, 63 ... plastic washer, 64 ... Stainless steel washers, 65 ... Spring washers, 66 ... Nuts, 68 ... Locking parts, 70 ... Fall prevention mechanism, 75 ... Notch grooves, L ... Rotating shaft, X ... Front and rear direction, Y ... Width direction, Z …vertical direction

Claims (11)

A crampon body comprising a mounting plate mounted on the surface of the ski and a pair of anti-skid blades that project both sides of the ski in the width direction toward the back of the ski and extend in the front-rear direction of the ski. ,
A plate-shaped anti-slip blade that is bridged over the pair of anti-skid blades and extends on the back surface side of the ski in the width direction.
It has an urging mechanism that urges the rear slip prevention blade, and has.
The pair of anti-skid blades comprises a support over which the anti-slip blades are bridged.
The support portion has a first position in which the rear slip prevention blade extends along the back surface of the ski and the blade edge faces rearward, and the blade edge stands up from the back surface of the ski plate and the blade edge is opposite to the ski plate. Supports swingable between the second position facing side and
The urging mechanism is a ski crampon characterized in that the rear slip prevention blade is urged to the second position. The support portion is provided with a pair of support holes penetrating in the width direction in each sideslip prevention blade.
The anti-slip blade has a main body located between the pair of anti-skid blades in the width direction, a pair of penetrating portions penetrating the support holes on both sides of the main body, and the main body of the penetrating portion. A pair of protrusions located on the opposite side of the portion and located on the outside of the pair of anti-skid blades are provided.
The opening edge of the support hole in the skid prevention blade includes a first opening edge portion that comes into contact with the backslip prevention blade from the side of the ski plate when the backslip prevention blade is in the first position. It is provided with a second opening edge portion that comes into contact with the backslip prevention blade from the front when the backslip prevention blade is in the second position.
The ski crampons according to claim 1, wherein the urging mechanism urges the rear slip prevention blade to the second opening edge portion. The penetrating portion is provided with a thick portion thicker in the front-rear direction than other portions of the penetrating portion at a portion located at the side end of the ski when the post-slip prevention blade is in the second position. ,
The thick portion includes the first opening edge portion and the opening edge of the support hole in the skid prevention blade when the urging mechanism urges the backslip prevention blade to the second opening edge portion. The ski crampon according to claim 2, wherein the ski crampons abut on the inside corner where the second opening edge portion intersects. The ski crampons according to claim 2 or 3, wherein one of the pair of support holes is provided with a hole portion through which the backslip prevention blade can pass in the width direction. Each anti-skid blade has a notch groove that communicates with the support hole from the side of the edge of the anti-skid blade.
The ski crampons according to claim 2 or 3, wherein the width of the notch groove is equal to or larger than the thickness of the rear slip prevention blade. Each of the pair of protrusions is provided with a through hole on the side closer to the ski when the anti-slip blade is placed in the second position.
The urging mechanism comprises a rope with a stretchable elastic portion.
The rope has a first knot that abuts from the rear on the opening edge portion of the through hole in one of the protrusions when the backslip prevention blade is arranged at the second position, and the rope from the rear to the front. A routing portion that passes through the through hole of one of the protrusions, passes through the surface side of the ski, and passes through the through hole of the other protrusion from the front to the rear. The ski Eisen according to any one of claims 2 to 5, further comprising a second knot that abuts from behind the opening edge of the through hole in the other protrusion. The rope comprises a first nylon rope and a second nylon rope made of nylon, and a stretch rope having elasticity.
The first nylon rope comprises the first knot, passes through the through hole of one of the protrusions, and reaches the side of the mounting plate opposite to the ski.
The second nylon rope comprises the second knot, passes through the through hole of the other protrusion, and reaches the side of the mounting plate opposite to the ski.
The ski crampons according to claim 6, wherein the stretch rope extends between the first nylon rope and the second nylon rope in the width direction on the side of the surface of the ski. The first nylon rope and the one end portion of the stretch rope in the width direction are connected to each other.
The second nylon rope and the other end portion of the stretch rope in the width direction are detachably connected via a locking mechanism.
The locking mechanism includes a locking portion provided on one of the stretch rope and the second nylon rope, and a locked portion provided on the other of the stretch rope and the second nylon rope. The ski Eisen according to claim 7. The first nylon rope and the one end portion of the stretch rope in the width direction are tied to each other.
The second nylon rope and the other end portion of the stretch rope in the width direction are tied to each other.
The backslip prevention blade is provided with a notch groove for rope insertion communicating with the through hole in one of the protrusions.
The first nylon rope can pass through the notch groove for inserting the rope, and the first nylon rope can pass through the notch groove for inserting the rope.
The ski crampon according to claim 7, wherein the width dimension of the notch groove for inserting a rope is equal to or smaller than the diameter of the through hole. The main body portion is continuously provided with a plurality of blade portions that taper in the width direction toward a direction away from the ski plate when the backslip prevention blade is arranged at the second position. The ski crampons according to any one of claims 2 to 8, characterized in that. The ski crampons according to any one of claims 1 to 10 and
Fixtures for attaching the crampons body to the skis,
Fastening bolts that fasten and fix the fixture to the surface of the ski,
A fall prevention mechanism that prevents the crampon body from falling off the ski.
Have,
The mounting plate has a non-circular opening and
The fixative has a base that has the same thickness as the mounting plate and can be fitted into the opening, and a non-circular fitting that is attached to the base in a state of being rotatable about a rotation axis perpendicular to the ski plate. It has a stop plate and a spacer interposed between the locking plate and the base.
The locking plate projects from the opening to the outer peripheral side at the first rotation position located inside the opening when the base is fitted in the opening and when viewed from the rotation axis direction. Rotate to and from a second rotation position with a locking portion,
The dropout prevention mechanism includes a protrusion protruding toward the locking plate in a region of the mounting plate where the locking plate overlaps with a rotation locus that rotates between the first rotation position and the second rotation position. ,
The protrusion is on the side of the second rotation position with respect to the locking plate arranged at the first rotation position, and the engagement is arranged at the second rotation position when viewed from the direction of the rotation axis. It is installed at a position that does not overlap with the stop plate,
A ski crampon set characterized in that the protruding dimension of the protrusion is shorter than the thickness dimension of the spacer.

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