JPS5929273B2 - ski shoe fixings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing device for a ski boot, particularly for racing skis, touring skis, etc., in which the shoe is held via a sole extension provided at the front thereof. The extension engages within an arcuate member integral with the ski, the arcuate member having a volume corresponding to the width and height of the sole extension, and the shoe inserts the sole extension within the arcuate portion. The tightening device that secures the ski is integrated with the ski by means of a tool.

This device makes it possible to bend the sole at the front extension of the shoe and at the same time to securely fasten the shoe to the ski.

The invention is for use with this type of fixture,
The front part of the sole is formed with an extension made of plastic material at the same time as the sole is molded, and the front part of the shoe, which is engaged in the arcuate member, is provided with a receptacle that allows the heel to be easily lifted. A feature of the invention is that the sole extension is formed with a shoulder facing towards the shoe, to which the ski boot can be fixed. If the sole extension is provided with a thin-walled area to increase its flexibility, the front end of this area is attached to the sole extension. It can be used as a shoulder for a shoulder fastener that is secured within the bow.

In a preferred embodiment of the shoe according to the invention, the shoe-side upper transverse edge of the sole extension engages in the arcuate fixation member and/or!
! An inclined surface is formed at the lower transverse edge on the end side of the bamboo extension.

These sloped surfaces increase the likelihood that the sole will bend and allow the skier to stretch his foot as he walks.

Another object of the invention is a fastening device for ski boots of the above type, especially for racing skis or touring skis, which fastening device is integral with the bow and for tightening the shoulder of the sole extension. It has a tool with a movable member that can be set.

The fastening device in the first embodiment has a tightening device formed by a hook integral with the arc and rotating around a horizontal axis perpendicular to the axis of the ski, the pawl of this hook being The first position, called the tightening position, which engages the shoulder provided on the sole extension and faces the direction of the shoe to prevent the extension from coming off the arcuate part, and the claw of the hook from the extension. It is movable between a second position, called a release position, in which it can be released and the ski and shoe can be separated.

In this first embodiment of the invention, said hook is in the form of a metal plate pivoted to two arms arranged on the top of the bow, and the claw of the hook is attached to the shoe of this plate. It consists of a curved end facing towards the direction.

It is preferable to use a coil spring, for example, to keep the hook in the tightened position.

In a modification of the first embodiment of the present invention, the hook constituting the main body made of plastic material is attached to the arcuate member via an elastic thin plate, and the flexibility of the elastic plate allows the hook to be tightened and released. The hook is oscillated between positions, and its elasticity ensures that the hook is always set in the tightening position.

In a preferred example of this variant, the flexible thin plate is made into a rectangular shape with a hole in the center, and one end of this rectangle is formed into a ribbed, for example.
At the same time, the remaining three sides are accommodated in the recess formed in the hook body, and the hole formed inside the rectangle engages the boss integral with the hook body. , the hook body is integrated with the elastic thin plate by a pin passing through the hook body.

In order to better retain the shoe extension within the bow, the invention uses relatively large hook pawl widths and the two pivot points of the hook on the bow are spaced well apart from each other. However, it should be possible to rotate around axes other than these pivot axes.

In a second embodiment of the fixation device, the tightening is constituted by a drive lever whose device can be pivoted about the fixation axis relative to the arcuate member, and whose pawl engages with a shoulder provided on the extension of the sole. The hook is pivoted on the lever around a shaft placed in front of the pivot shaft of the lever relative to the arcuate member, so that when the lever is tilted toward the sole of the shoe, The pawl of the hook engages and locks with the shoulder so that when the lever is lifted, the hook is lifted and removed, releasing the shoe.

In a preferred embodiment, in the released position, the pivot axis of the lever is on a line connecting the pawl of the hook to the pivot point that pivots the hook to the lever; Below the line connecting the hook to the pivot shaft connecting the lever to the lever, the tightening is such that the lever and hook are in stable equilibrium at a position.

Preferably, the lever is provided with at least one abutment which abuts the hook when it is slightly raised, so that the hook can be lifted off the shoulder of the sole extension.

It is also preferred to provide a return spring that pushes the hook downwards relative to the lever.

In a modification of the second embodiment, the fastening is such that one end of the pawl of the hook constituting the device can engage with the shoulder of the front extension of the sole of the shoe, and the other end is connected to two pivots. It is connected to the support part of the arcuate member via a lever.

The pivot axis of this lever is located on the support of the bow between the pawl of the hook and the pivot of the lever on the hook, or the pivot axis of the lever on the support of the bow is located on the hook. A line connecting the end and the pivot point of the lever on the hook is traversed so that the hook is resiliently held in the tightened position during tightening and release.

In a third embodiment, the tightening device is constituted by a horizontal transverse rod which can be raised and lowered relative to the vertical sides of the arcuate member, the rods forming the upper transverse part of the arcuate member being of the extension of the sole. It is designed to tighten by engaging with the shoulder.

In a special embodiment, said rod is integrated with two arcuate arms, which slide in correspondingly shaped grooves formed in the arcuate member by movement of rocking levers pivoted at their ends. .

By pressing the abutment part integral with the arcuate member, the lever sets the rod on the shoulder of the extension of the sole and tightens it.

In a preferred variant of this third embodiment, the upper vertical part of the bow is formed with two horizontal flanges, between which the lever passes for tightening and release.

In a preferred embodiment, the lower end of the swing lever abuts against the lower surface of the horizontal flange to slide and release the arcuate arm.

In order to better understand the present invention, a plurality of embodiments shown in the drawings will be described below, but the present invention is not limited to these.

In a binding according to the invention of the type shown in FIGS.
It is constituted by a bottle-shaped steel spindle 21 horizontally crossing the sole extension 8.

The free end 21 of the pin 20 is hooked onto the other curved end 22 of the pin.

The plate 1 supporting the arcuate member 6 has screws 2°3.4
is fixed to the ski 5 by.

The vertical side portions 6a, 6b of the arcuate member are extended as relatively long enlarged wings 15, 16, which
5.16 protrudes from the side of the ski 5 to receive the end of the shoe and sole shown in dashed lines in FIG.

Holes 26 are formed in the plate 1 to reduce weight.

FIG. 2 shows the ski 5, the plate 1 supporting the bow 6, and the wings 15,16.

The front extension 8 formed in the sole of the shoe is produced integrally with the sole 26, for example by injection molding of a plastics material.

In this embodiment, said extension 8, which is integral with the so-called sole 26, is connected to the arcuate member 6 via a thinned area 30.
It is locked inward to give more flexibility to the front part of the shoe so that the heel can be easily lifted as shown by the dotted line.

As can be seen in FIG. 2, the area of reduced thickness 30 forms a shoulder in the direction of the arc, which shoulder is used for locking as in the other embodiments described below. This is also possible according to the invention.

In this other embodiment, the plate 1 also supports the arc 6 and is fixed to the ski 5 by means of screws 2, 3.4.

The vertical sides 6a, 6b of the arcuate member are extended into enlarged wings 15, 16, into which the end of the shoe is accommodated, as shown in dash-dotted lines in FIG. be done.

In the first embodiment of the device, the clamping shown in FIGS.
The role is to support the hinge shaft.

In this embodiment, the hook is constituted by a metal plate bent approximately at its center 43 to surround said flange 40.41 and bent to form a pawl 44 at the end.

The hook 42 is further formed with two laterally curved flanges 45 and 46.
．． Reference numeral 46 designates a hinge shaft 47 that supports the hook 42 in a swingable manner relative to the arcuate member 6 (similar to the flanges 40 and 41 integral with the arcuate member 6) and extends from one end of the hook to the other end thereof.
It has a hole to accommodate it.

As shown in FIG. 4, one end of the coil spring 48 is in contact with the end of the arcuate member, and the other end is in contact with the hook, constantly biasing the hook clockwise as shown in FIG. There is.

This state corresponds to when the hook is in the tightened position.

However, when the end of the hook is pushed in the direction of arrow F (Figure 6), the hook is rotated to the position shown by the dashed line in Figure 6;
It is clear that this allows the tightening to be released and the shoe to be released.

Further, as shown in FIG. 6, the extension part 8 of the sole of the shoe 9
is provided with a shoulder 49 against which the pawl 44 abuts when the hook is in the tightened position.

In the embodiment shown in FIGS. 3-6, the surface of the shoulder 49 and the surface of the hook pawl 44 (in the tightening position) are connected to the hinge axis 4.
It is oriented approximately tangentially to a circle concentric with 7, which facilitates the rotation and removal of the hook, and at the same time allows installation to be carried out without the need for dog play.

In the variant shown in FIGS. 7 to 11, the body 42 of the hook made of plastic material is attached to the bow-shaped fixing member by means of an elastic metal plate 50, which is attached to the edge of the bow-shaped member by means of two rivets 51. Fixed.

In this modification, a hollowed out portion 52 is formed in the center of the elastic plate 50, and before the main body 42 of the hook is attached to the elastic plate 50, the screw 2 is inserted through the hollowed out portion 52. This is to allow the plate 1 to be fixed to the ski.

As can be seen from FIG. 11 showing the plan view, the hook body 4
2 has a general shape of an isosceles triangle with rounded corners, and the apex of the hook body faces the forward direction of the ski in order to smoothly slide the snow, and its rear end 42a It is recessed to prevent the end of the shoe from hitting the hook body and wearing out when the foot moves.

There is still a triangular recess formed in the upper part of the hook body, as shown in the cross-sectional views in Figures 7 and 8, and the recess accommodates the tip of the ski pole when the hook body is in the released position. It is now possible to do so.

As shown in Figures 7.8 and 9, the lower part of the hook body 42 has a transverse cutout 5 for accommodating the arcuate fixing member.
4 is formed.

The hook body is further provided with an elastic plate 5 indicated by dotted lines in Fig. 10.
A hollowed out portion corresponding to the shape of 0 is formed.

In addition, a protrusion 55 is formed at the lower part of the hook body 42 to cross a hollowed out portion 52 formed in the elastic plate 50, so that the hook body 42 is held on the elastic plate 50 from its lateral direction in all directions. ing.

In order to reliably fasten the elastic plate 50 and the hook body 42, the above embodiment is provided with a metal pin 56 that engages with a hole 57 formed in the hook body and the protrusion 55.

From the above, first, the screw 2 is installed using the hollowed out part 52 formed in the elastic plate 50, and then the hook body 4
2 can be engaged with the elastic plate 50 and finally both can be tightened using the pin 56.

In the illustrated embodiment, two recesses 5 are provided on the underside of the hook body.
8, and an elastic plate 5 is formed on the arcuate fixing member within this recess 58.
It is also possible to accommodate the head of the rivet 51 that fixes the hook so that the hook can be tightened and positioned freely.

Similar to the embodiment shown in FIGS. 3-6, the hook pawl 42
is sloped similarly to the shoulder 49 of the forward extension of the sole of the shoe.

As can be seen from the above two embodiments, it is understood that the pawl of the hook is raised and then falls into the shoulder 49 to ensure a secure tightening, so that the extension of the shoe can be automatically engaged with the hook. I can do it.

It will also be understood that according to the invention, the shoe can be released simply by pushing the hook in the direction of arrow F and rotating the hook.

In the modification shown in FIGS. 7-11, the hook can be rotated by engaging the tip of the ski pole with the protruding recess 53 formed in the upper part of the hook body 42.

Since the concave portion 53 has a triangular shape, the tip of the pole can be easily guided to the tip of the hook body 42 for rotation.

It is also possible, if necessary, to rotate the hook manually when inserting the sole into the arc, in order to facilitate insertion of the forward extension of the sole of the shoe into the hook. .

In the second embodiment shown in FIGS. 12-16, the plate 1 supports the vertical sides 6a, 6b of the arcuate member, the arcuate member being formed into two enlarged wings 15, 16 for accommodating the front part of the shoe. It has been extended.

In this embodiment, there are two flanges 10 at the top of the arcuate member.
0 are formed and these flanges 100 extend horizontally from the top of the vertical sides 5a, 5b of the arc at the level of the sole extension.

Each of these elements of the arc is integrally molded from plastic material.

In order to improve the rigidity and mechanical strength of the flange 100, the flange 100 is formed with ribs 101 extending in the height direction from the sides of the shoe.

It will be appreciated that in this embodiment the bow has a hole in the upper center and the function of the bow is carried out by said two flanges which hold the forward extension of the sole and prevent it from rising. I can do it.

It will be appreciated that the size of the lever 102, which in the illustrated example is molded of plastic material, is approximately equal to the distance between the two wings 6a, 6b. As can be seen in particular from FIG. A notch is formed in the center of the fixed substrate 1.
It is understood that the lever can be placed in a block 103 integral with the block 103, and that the lever is pivotally mounted on the block 103 via a shaft 104 passing through a hole 105 formed in the wings 6a, 6b. Good morning.

The hook 105 is generally made of a U-shaped metal rod, and the center part of the U-shape constitutes the claw 106 of the hook.
The wings of the shape constitute the hook body, the ends of which are bent inward to engage corresponding holes formed in the lever 102.

In particular, as shown in FIG. 14, the two core parts 109 formed on both sides of the lever 1020 prevent the lever 102 from coming under the hook 105, thereby raising the hook by a distance that can release the fixation. It will be understood that when the lever 102 is lifted forward, the hook 105 is lifted together.

Hook 105 as shown in Figure 14.15.16
shows the two angular positions when the straight line connecting the hook pawl 106 and its pivot shaft 108 is below the lever's pivot shaft 104 (Fig. 14) and when it is above it (Fig. 16). It will be appreciated that the pivot shaft 108 can be pivoted relative to the lever 102 between the two.

In the position shown in FIG. 14, the wings 107 of the hook are pulled apart in the lateral space formed in the lever and the curved portion 108 is fitted into the corresponding hole in the lever 102 to pivotally connect the hook to this hole. I can do it.

When fixing the shoe to the ski, it is only necessary to insert the extension of the sole into the bow after setting the lever to the position shown in FIG. 14.

In this position, the lateral direction of the extension of the sole is the wing 6a.

6b and its upper part is held by a flange 100.

When lever 102 is rotated in the direction of arrow F in this position,
The hook 105 and the lever 102 are rotated at the same time, so that the claw 106 of the hook engages the extension 8 of the sole as shown in FIG.
Comes to the back of the shoulder area.

During this movement, the U-shaped wings 107 forming the hook pass between the two flanges 100 forming the upper part of the bow.

In the illustrated embodiment of the invention, a return spring is provided between the hook 105 and the lever 102 to create a light force that pulls the hook and lever apart, so that even if there is friction, the It is also possible to ensure that the hook pawl 106 engages the back surface of the shoulder as shown in FIG. 15 during movement.

When the lever is further rotated from this position in the direction of arrow F, the pivot point 108 of the hook creates a pulling force forward (to the left in FIG. 15) in an arc around the axis 104 on the lever; A straight line connecting pivot point 108 and pawl 106 passes through pivot point 104 of the lever, and the lever pivots a small additional angle to the position shown in FIG.

This relieves some of the force that the claws are exerting on the shoulder of the sole extension.

In this final position, the lever pivot point 104 is below the straight line connecting the hook pivot axis 108 and the hook pawl, so that the members are in stable equilibrium.

To release the shoe, simply perform the operation in the opposite direction.

To lift the lever from the position of FIG. 16, a light force must be applied to pass the pivot shaft 104 over the line connecting the hook shaft 108 and the pawl.

Rotate the lever in the opposite direction until it reaches the position shown in Figure 15.
The lever is lifted by an abutment 109 integral with the lever, and the shoe is completely released.

Although the fixture described above is made of plastic material, it is clear that the invention can be made using other suitable metal parts.

Two 7-lunges 10 make up the upper part of the arcuate hook
0, the bow is completely sealed so that the hook rests on the bow and at the same time the pawl of the hook rests on the shoulder of the sole extension. It is also possible to perform the tightening.

In the variant shown in FIGS. 17-21, the plate 1 also supports the vertical sides 6a, 6b of the arc, the two enlarged extensions 15, 16 of which accommodate the front of the shoe.

The upper part of the arc is constituted by two flanges 100 extending horizontally from the upper part of its vertical sides 6a, 6b, and which are adapted to hold the upper surface of the sole extension.

Preferably, each of these members is integrally molded from a plastic material.

17-21, it can be seen that the hook 110 with the claw 106 is pivoted at 111 to two levers 112 which are pivoted 113 to the extensions of the vertical sides 6a, 6b of the arc. Good morning.

In this embodiment, two levers 112 and their pivot shafts 11
1.113 is made of a U-shaped metal bar whose arm ends are bent outward.

Figure 19.20.21 shows hook 1 when tightening the fixture.
The three positions occupied by 10 are shown.

In the position shown in FIG. 19, in which the hook 110 is raised high, the sole extension 8 can be inserted into the arc.

To simplify the design, the sole extension 8 is made with some play within the arc; however, in the present invention, the shape of the tip of the sole extension has a width within the arc. It shall correspond to the shape of the arcuate member so that there is substantially no play in height and height.

When tightening, the hook is rotated in the direction of arrow F1 to the position shown in FIG. 20, so that the pawl 106 comes into contact with the shoulder of the extension 8 of the sole.

In this position, the pivot shaft 11 of the lever 112 on the arcuate member
3 between the pawl 106 and the pivot shaft 111 and the pawl 106
and the pivot shaft 111.

No particular large force is required to set the hook 110 in this position.

When tightening the fixture, the hook may be rotated about the pawl 106 by applying a force in the direction of arrow F2 to the hook.

Due to the elasticity of the material, hook 110 is pivoted about pawl 106 and pivot shaft 113 until it is set in the position shown in FIG.

At this time, the pivot shaft 113 is connected to the pivot shaft 111 and the hook pawl 10.
It is on the line connecting 6.

It will be appreciated that the position of the hook shown in FIG. 21 is a stable position due to the elasticity of the material.

To release the fastening, it is only necessary to apply force to the protrusion 114 extending from the end of the hook toward the front of the shoe and turn the hook in the opposite direction of arrow F2.

Instead of forming the hook upper part with two flanges 100, the entire upper part of the bow is completely sealed and the hook 11
It is also possible to place the 0 over the flange of the bow and extend the pawl into engagement with the shoulder of the forward extension of the sole.

The device shown in FIGS. 22-26 is an embodiment of a special tightening device, in which a rod forming the upper part of the arc engages the shoulder of the shoe extension to effect the tightening.

As can be seen in particular from Figure 22, the fixture body 1 is fixed to the ski 5 and the vertical parts 5a, 5b of the arcuate members
is supported.

Enlarged wings 15,16 are connected to the vertical part.

As can be seen from FIG. 26, the rod 120 is integrated with the ends of two side arms 121, 122, and the other ends of these arms 121, 122 are pivotally connected to a member 124 constituting a lever. has been done.

Said arms 121, 122, which have an arcuate shape, slide in grooves formed on the inner surface of the vertical parts 6a, 6b of the arc.

In the position of FIG. 23, which shows when the tip of the shoe is inserted into the arcuate member, the rod 120 is raised in the direction of the arrow.

After inserting the front extension 8 of the shoe into the fixture, lever 1
When the free end of 24 is tilted to the left, the vertical portion 6a of the arcuate member
, 6b, the arms 121, 122 slide in the grooves 125 and the rod 120 is lowered by the lever 124 resting on a stop 126 projecting between them.

As a result, the rod 120 is set within the thinned area 30 at the tightening position shown in FIG.

It will be appreciated that in this embodiment, the rod 120 serves simultaneously as both the tightening member and the upper horizontal member of the arcuate member.

To release the shoe from the ski, turn the lever 124 to the left from the position shown in Figure 24, raise the rod 120, release the lock, and release the front extension of the shoe. Figures 27 to 31 show the third embodiment. A variation of the example is shown, in which the vertical portions 6a, 6b of the arcuate members are provided with horizontal flanges 100 facing each other.

An arcuate groove 125 is formed on the inner surface of the vertical portions 6a, 6b, and arms 121.12 of the same shape are inserted into this groove.
2 slides.

The lever 124 is formed with a side notch 124a through which the flange 100 passes when the lever is rotated.

Tightening can sometimes be accomplished by simply inserting the shoe extension into the arcuate member and then pulling down the lever 124.

The lower end of the lever 124 comes into contact with the fixed plate 1, and the rod 120 is reliably rotated and tightened.

Figures 28 and 29 show the state in which the lever 124 is tilted in the direction of the arrow to release the tightening in this modification.
The arcuate arms 121 and 122 are in contact with the lower surface of the groove 12.
5, the rod 120 is lifted and released.

In this preferred embodiment, the forward extension of the sole is ensured by the flange 100 and the rod 120.

Furthermore, tightening and release can be performed by simply moving the lever 124, twisting the lever in one direction and then tilting it in the opposite direction.

The embodiment shown in FIG. 32 shows the tip of the extension of the sole 26 inserted into the fixed arcuate member, which tip has a first inclined surface 8a at its front lower transverse edge. , has a second inclined surface 8b on its upper transverse edge facing towards the shoe.

These sloped surfaces allow the sole 26 to flex and fully extend the foot as the skier walks, while also eliminating height and width play between the interior of the arcuate member and the forward extension of the sole. It is something that should not be used.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a ski fixture of the type according to the invention. FIG. 2 is a side view taken along the line ■-■ in FIG. 1. FIG. 3 is a side view of a first embodiment of a fixing device according to the invention. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. FIG. 5 is a plan view of the fixing device shown in FIGS. 3 and 4. Figure 6 shows Vl - of Figure 5 when the shoe is attached to the fixing device.
A sectional view taken along the VI line. 7 and 8 are sectional views taken along the line ■-■ of FIG. 9 of a modification of the fixing device showing the tightening position and the release position. FIG. 9 is a plan view corresponding to FIG. 7. Figure 10 is a rear view of the hook body. FIG. 11 is a plan view of the hook body. FIG. 12 is a side view of a second embodiment of the fixing device according to the invention. FIG. 13 is a plan view of the fixing device of FIG. 12 when the lever is partially engaged; Figures 14, 15 and 16 are sectional views taken along line XIV-XIV in Figure 13 when the lever and hook are in different positions. FIG. 17 is a side view of a second embodiment of the fixing device according to the invention. FIG. 18 is a plan view corresponding to FIG. 17. 19.20.21 are sectional views taken along line XIX-XIX in FIG. 18 when the hook is in a different position; FIG. 22 is a plan view of the arcuate member main body of the third embodiment of the fixing device according to the present invention. Figures 23 and 24 show that the tightening is the second part of the arcuate member to which the device is attached.
2 is a sectional view taken along the line V■tXX■ of FIG. FIG. 25 is a right side view of FIG. 22. FIG. 26 is a perspective view of the tightening rod and its driving lever. 27-31 are views showing modifications of the third embodiment shown in FIGS. 22-26. FIG. 32 is a side view of a sole extension according to a preferred embodiment. Reference numerals: 1... Fixed small rate, 2, 3. 4... Screw, 5... Ski, 6... Arcuate member, 8... Sole extension, 9... Shoe, 15 .16... Expanded wing section, 30
...Thin area, 42...Hook, 44...Claw,
49...Shoulder part, 50...Elastic plate, 51...Rivet, 102...Lever, 105...Hook, 120
···rod.

Claims (1)

[Scope of Claims] 1. An extension part in the front of the sole, and this extension part has flexibility in the part in front of the foot, in an arcuate member of the same shape integrated with the ski. In a long-distance race ski or touring ski shoe adapted to engage,
Ski boot, characterized in that said extension of the sole has a shoulder, on which shoulder rests a tightening member which retains the extension of the sole within an arcuate fastening member. 2. The patent characterized in that the shoulder is constituted by the front part of a zone of reduced thickness formed on the extension between the shoe and the part of the extension that engages in the arcuate fixation member. Shoes according to claim 1. 3. that an inclined surface is formed on the forward-facing lower transverse edge and/or on the upper transverse edge facing towards the shoe of the front part of the extension of the shoe sole inserted into the arcuate fastening element; A shoe according to any of the characterizing claims 1.2. 4. The shoe is held by a sole extension provided in front thereof, said extension engaging in an arcuate member integral with the ski, which arcuate member corresponds to the width and height of the sole extension. A fastening device for a type of ski boot, in particular for racing skis or touring skis, having a shaped volume, comprising:
The fixing device is characterized in that it is integral with the arcuate member and has a tightening device with a movable member that can be set on the shoulder of the front extension of the sole of the shoe. Fixation device. 5. The fastening constituted by a hook integral with the bow and rotating around a horizontal axis perpendicular to the axis of the ski has a tool, the claw of which is attached to the sole extension. A first position, referred to as the tightening position, which engages the shoulder formed and prevents said extension from coming off the bow when facing towards the shoe, and a first position, called position, when the pawl of the hook is released from the shoulder. 5. Device according to claim 4, characterized in that it is movable between a second position, called a release position, in which the shoe can be separated from the ski. 6. The hook is in the form of a metal plate pivotally attached to two flanges provided on the upper part of the arcuate member, and the pawl of the hook is constituted by the curved edge of this plate on the shoe side. An apparatus as claimed in claim 5. 7. Device according to claim 5, characterized in that the hook is set by a spring in the tightening position. 8. Claims characterized in that the two pivot points of the hook on the bow are sufficiently far apart from each other to prevent rotation of the hook about an axis other than its pivot axis. The device according to paragraph 5. 9. The device according to claim 5, characterized in that the claw of the hook has a relatively large width. 10 The hook is fixed to the arcuate member via the elastic plate,
The flexibility of the elastic plate allows the hook to rotate between the tightening position and the releasing position, and the elasticity of the elastic plate allows the hook to be automatically set to the tightening position. The apparatus according to claim 5. 11. The device according to claim 10, characterized in that the hook body is molded from a plastic material. 12. The device according to claim 10, wherein the elastic plate engages in a hole having a shape corresponding to the hook body and is fastened to the hook body via a pin. 13. The device according to claim 10, wherein a notch is formed in the center of the elastic plate, and a protrusion of the hook body is inserted into this notch. 14. Claim 5, characterized in that the upper surface of the hook is provided with a concave radius for accommodating the end of the ski pole in order to set the hook in the released position.
Apparatus described in section. 15. Device according to claim 5, characterized in that the outer part of the claw of the hook facing towards the shoe is provided with a concave radius. 16 The tightening is constituted by a drive lever whose tool is rotatable around an axis fixed relative to the arcuate member, such that the pawl engages with a shoulder provided on the sole extension. The hook is pivotally connected to the lever at an axis that is forward of the pivot axis of the lever with respect to the arcuate member, and when the lever is tilted toward the sole of the shoe, the pawl of the hook engages with the shoulder. 5. Device according to claim 4, characterized in that when the lever is lifted the hook falls upwardly and disengages, releasing the shoe. 17 in the released position, the pivot axis of the lever is above a line connecting the hook pawl and the pivot axis of the hook on the lever;
At the tightening position, the pivot axis of the lever is below the line connecting the hook pawl and the pivot axis of the hook on the lever, so that the lever and hook are in stable equilibrium at the tightening position. 17. The device according to claim 16, characterized in that: 18. The device of claim 16, wherein said lever is molded from a plastic material. 19. Claim 4, characterized in that the fixing plate and the arcuate member are molded from a plastic material.
Apparatus described in section. 20. Device according to claim 16, characterized in that the hook is constituted by a metal bar bent in a generally U-shape, the central part of which constitutes the pawl of the hook. 21. The upper part of the arc is constituted by two mutually opposed horizontal flanges integral with its side walls, the hook passing between these two flanges and adapted to abut the shoulder of the sole extension. 17. The device according to claim 16, characterized in that: A pawl provided at one end has a fastener constituted by a hook engageable with the shoulder of the sole extension of the shoe, the other end of the hook being connected to the arcuate member via two pivot levers. connected to a support, the pivot axis of said lever on the support of the arcuate member being disposed between the pawl of the hook and the pivot axis of said lever of the hook; The pivot axis of the lever crosses a line connecting the hook end and the pivot point of the lever on the hook, such that the hook is held elastically in the tightening position during tightening and release. 5. The device according to claim 4, characterized in that: n Claim 1, characterized in that the pivot shaft and lever on the hook and on the support of the arcuate member are constituted by a U-shaped metal rod, the ends of the arms of which are bent outward. The device according to item 22. 24 The fastening constituted by horizontal transverse ronds capable of rising and lowering against the vertical side walls of the arcuate member has a device, said ronds constituting the upper transverse part of the arcuate member engaging the shoulders of the extension of the shoe. 5. The device according to claim 4, wherein the device is adapted to ensure reliable tightening. 25 The rod is integrated with two arc-shaped arms, and these arms are supported by an abutment part integral with the arc-shaped member. The patent is characterized in that when the rondo is moved to set and tighten the rondo on the shoulder of the sole extension, it slides in a correspondingly shaped groove formed in the vertical side of the arcuate member. Apparatus according to claim 24. 26. Claim 26, characterized in that the vertical part of the arc is further provided with horizontal flanges, and the lever is formed with a lateral notch to allow it to pass between these flanges. The device according to item 25. 27. Claim 26, characterized in that the lower end of the swinging lever abuts against the lower surface of the horizontal flange of the arcuate member, so that the fixing device is released simply by rotating the lever. The device described.