JPH0630002Y2 - Ski shoes - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a ski boot, and more particularly to a ski boot provided with a tightening device for holding a foot by tightening a belt that abuts on an outer surface of an outer shell.

[Conventional technology]

Conventionally, for example, as disclosed in Japanese Utility Model Laid-Open No. 63-71704, in order to improve the feeling of unity between a ski boot and a foot and to perform sufficient tightening and holding, the body of the ski boot is tightened by a tightening device. Is being done.

In such a ski boot, for example, one end portions of two belts are fixed to both sides of a front cuff which constitutes an outer shell, and as shown in FIG. 8, these belts 1 surround the outer circumference of the rear cuff 3. By tightening the belt 1, the belt 1 comes into contact with the rear cuff 3 and presses the rear cuff 3 toward the front cuff side, so that the foot can be firmly held and the operability of the ski can be improved.

[Problems to be solved by the device]

However, in such a conventional ski boot, the contact surface 5 of the rear cuff 3 with which the belt 1 abuts is flat, and the contact surface 7 of the belt 1 that abuts the rear cuff 3 is also flat. As shown in FIG. 8, depending on the inclination angle of the abutment surface of the belt 1 and the rear cuff 3, the contact surfaces 5, 7
There is a problem in that the upper end portion and the lower end portion of the belt 1 come into contact with the contact surface 5 of the rear cuff 3 without contacting each other, and a force that twists the belt 1 acts.

That is, for example, in a rear entry type ski boot, the thickness of the foot differs depending on the skier, so the opening amount of the trunk of the ski boot, that is, the inclination angle of the rear cuff 3 changes.

In this case, the belt 1 with one end fixed to the front cuff
The upper end portion and the lower end portion of the belt abut on the contact surface 5 of the rear cuff 3, and the point of action P of the tightening force of the belt 1 largely deviates from the line of action A of the belt 1 tightening force. A large bending moment will act.

As a result, for example, the ratchet mountains that connect the belts 1 to each other may be crushed or the connection between the belts 1 may be released during the ski operation. In this case, the ski operation becomes difficult, and the safety and durability are improved. There was a problem of lacking.

When the line of action A of the tightening force by the belt 1 and the point P of action of the tightening force on the belt 1 are separated, the contact surface 7 of the belt 1 contacts the rear cuff 3 during skiing. Since the belt 1 elastically deforms so as to come into contact with the surface 5, the belt 1
There was a problem that the tightening force due to

The present invention has been made in order to solve the above-mentioned problems, and it is possible to greatly suppress the bending moment generated in the belt of the tightening device by locating the point of action near the line of action of the tightening force. Intended to provide shoes.

[Means for Solving the Problems]

The ski boot according to claim 1, further comprising an outer shell and an inner boot inserted into the outer shell, and the outer shell is provided with a tightening device for holding a foot by tightening a belt that abuts an outer surface of the outer shell. In the shoe, the abutting portion of the belt with the outer shell is a curved belt-side curved abutting portion that is convexly formed toward the outer shell side.

The ski boot according to claim 2 is provided with an outer shell and an inner boot inserted into the outer shell, and the outer shell is provided with a tightening device that holds a foot by tightening a belt that abuts an outer surface of the outer shell. In the shoe, the contact portion of the outer shell with the belt is a curved shell-side curved contact portion that is convex toward the belt.

[Operation] In the ski boot according to claim 1, since the contact portion of the belt with the outer shell is a curved belt-side curved contact portion that is convexly formed toward the outer shell side, The belt-side curved contact portion abuts the outer shell, and the point of action of the tightening force by the belt is not located at the upper and lower ends of the belt, but is located near the line of action of the tightening force.

In the ski boot according to claim 2, since the outer shell abutting portion is a curved shell-side curved abutting portion that is convex toward the belt side, the outer shell-side curved surface is a curved surface. The contact point of the tightening force by the belt is not located at the upper and lower ends of the belt, but is located near the acting line of the tightening force.

〔Example〕

Hereinafter, the details of the present invention will be described with reference to the embodiments shown in the drawings.

1 and 2 show a first embodiment of a ski shoe according to the present invention, in which reference numeral 11 denotes a ski shoe.

The ski shoe 11 is roughly divided into an outer shell 13 formed from a hard and tough synthetic resin material, and an inner boot 15 inserted into the outer shell 13.

The outer shell 13 is mainly composed of a shell body 17 that covers a portion below the ankle, a front cuff 19 that covers the ankle portion to the shin portion, and a rear cuff 21 that covers the calf portion from the upper heel of the foot.

The lower end of the front cuff 19 is pivotally attached to the inner and outer ankle parts of the shell body 17 by a pivot pin 23 so as to be able to tilt forward, while the lower end of the rear cuff 21 is attached to the heel covering part of the shell body 17 by a pivot pin 25 to the rear. Releasably pivoted.

A stopper 27 that restricts the rearward tilting of the front cuff 19 is formed on the shell body 17.

Further, a supporter 29 for firmly holding the foot is interposed between the front cuff 19 and the inner boot 15.

A tightening device 31 for tightening and connecting the front cuff 19 and the rear cuff 21 is arranged on the front cuff 19.

This tightening device 31 includes two belts 33, 35 arranged on both sides of the front cuff 19, and these belts 33, 35.
It is composed of a connector 37 for connecting 35.

The two belts 33 and 35 are arranged so as to surround the rear cuff 21, and a large number of ratchet teeth 38 are formed at one end of the left side belt 33 among them. One end portion of the left belt 33 on which the ratchet teeth 38 are formed is inserted into the length adjusting portion 39 arranged on the front cuff 19, and by being locked in the length adjusting portion 39, One end of the left belt 33 has a front cuff 19
It is fixed to.

A U-shaped lever supporting member 41 is fixed to the other end of the left belt 33, and a central portion of a lever 43 is pivotally supported at an end of the lever supporting member 41.

On the other hand, the right belt 35 on the right side is integrally formed with the front cuff 19, and a seat plate 45 is fixed to the tip of the right belt 35 by a rivet 47 as shown in FIG. A lever portion 49 of the lever 43 is swingably supported by 45.

The connecting member 37 includes a lever support member 41 fixed to the left belt 33, a seat plate 45 fixed to the right belt 35,
It is composed of a lever 43.

As shown in FIG. 3, the entire surface of the belt 33, 35 on the rear cuff 21 side is a curved belt-side curved contact portion 51 that is convex toward the rear cuff 21 side.

That is, the belts 33 and 35 are formed in a semicircular cross section, and these belts 33 and 35 are accommodated in the recess 53 formed in the rear cuff 21, and the belt-side curved contact portions of the belts 33 and 35 are accommodated. 51 is in contact with the rear cuff 21 in the recess 53.

In the ski shoe 11 configured as described above, the length of the left belt 33 is adjusted by inserting one end portion thereof into the length adjusting portion 39 in accordance with the thickness of the foot.

Thereafter, as shown in FIG. 1, the foot 53 is inserted into the inner boot 15, and from this state, the lever 43 is pulled down to the right belt 35 side as shown in FIG. As shown in FIG. 2, a tightening force is generated on the belts 33 and 35, the rear cuff 21 is pressed toward the front cuff 19, and the foot 53 is strongly held.

When releasing the tightening force by the tightening device 31,
From the state shown in FIG. 2, as shown in FIG. 1, the lever 43 is raised and the lever support member 41 is raised by using the lever portion 49 of the lever 43 as a reaction force.
5 is loosened.

In the ski boot 11 configured as described above, the belt-side curved surface-shaped contact portions 51 of the belts 33 and 35 contact the rear cuff 21, and the contact point is the action point P of the tightening force. The action point P of the tightening force due to the belts 33 and 35 is not located at the upper and lower ends of the belts 33 and 35, but is located near the action line A of the tightening force.

That is, when the inclination angle of the rear cuff 21 changes as shown in FIG. 4 from the state shown in FIG. 3 when the foot 53 is thick or during skiing operation, as shown in FIG. As shown in FIG. 4, the action point P on the action line A is located at a position slightly deviated from the action line A.

Then, in the ski shoe 11 configured as described above,
The surfaces of the belts 33 and 35 on the rear cuff 21 side are the rear cuff 2
Since the belt-side curved surface-shaped contact portion 51 is formed in a convex shape toward the first side, the belt-side curved surface-shaped contact portions 51 of the belts 33 and 35 contact the rear cuff 21 and the belt 3
The action point P of the tightening force due to 3, 35 is located in the vicinity of the action line A of the tightening force, so that the upper and lower ends of the belts 33 and 35 do not come into contact with the rear cuff 21 as in the conventional case. The bending moment generated in the belts 33 and 35 of the tightening device 31 can be significantly suppressed as compared with the conventional case.

As a result, even if the thickness of the skier's foot 53 is different and the opening amount of the trunk of the ski shoe 11, that is, the inclination angle of the rear cuff 21 is changed, the action point P of the tightening force by the belts 33 and 35 is tightened. Since it is near the line of action A of the applied force, the belt 3
It is possible to suppress the occurrence of a bending moment that twists the belts 3, 35 to a minimum, the peaks of the ratchet teeth 38 connecting the belts 33, 35 are crushed, and the belts 33, 35 are not swung during skiing. It is possible to reliably prevent the connection from being released, improve ski operability, and significantly improve safety and durability as compared with the related art.

Further, since the point of action P of the tightening force by the belts 33 and 35 is located near the line of action A of the tightening force, the bending moment generated in the belts 33 and 35 during the ski operation is reduced, which results in The elastic deformation of the belts 33 and 35 can be suppressed, and a stable tightening force can be applied to the belts 33 and 35.
It is possible to reliably prevent the connection between the 35 members from being released.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, a curved concave portion 63 is formed on the outer surface of the rear cuff 61, and the concave portion 63 has a semicircular cross section. The belt 65 is accommodated.

The surface of the belt 65 on the rear cuff 61 side is a curved belt-side curved contact portion 67 that is convexly formed toward the rear cuff 61 side.
7 is in contact with the curved surface of the recess 63 of the rear cuff 61.

With the ski boot configured as described above, it is possible to obtain substantially the same effect as that of the first embodiment.

FIG. 6 shows a third embodiment of the present invention. In this embodiment, a concave portion 73 is formed on the outer surface of the rear cuff 71, and the concave portion 73 has a convex shape toward the belt 75 side. The formed shell-side curved surface-shaped contact portion 77 is formed.

A flat belt 75 is housed in the recess 73 of the rear cuff 71, and the flat belt 75 is in contact with the shell-side curved contact portion 77.

With the ski boot configured as described above, it is possible to obtain substantially the same effect as that of the first embodiment.

FIG. 7 shows a fourth embodiment of the present invention. In this embodiment, a concave portion 83 is formed on the outer surface of the rear cuff 81, and the concave portion 83 has a convex shape toward the belt 85 side. The formed shell-side curved-surface-shaped contact portion 87 is formed.

A flat plate-shaped belt 85 having a curved concave portion 89 on the rear cuff 81 side is accommodated in the concave portion 83 of the rear cuff 81, and the curved concave portion 89 of the belt 85 is brought into contact with the shell side curved contact portion 87. ing.

With the ski boot configured as described above, it is possible to obtain substantially the same effect as that of the first embodiment.

In addition, in the above-mentioned first to fourth embodiments, the example in which the present invention is applied to the rear entry type ski shoes has been described.
Of course, the present invention may be applied to a front entry type ski boot.

Further, in the first embodiment described above, the example in which the belts 33 and 35 are connected by the ratchet type has been described, but the present invention is not limited to the above embodiment, and the belts may be connected by the hook type, for example. Of course, the connection may be made by another method.

Further, in the above-described first embodiment, an example in which the entire surface of the belt 33, 35 on the rear cuff 21 side is the curved belt-side curved surface abutting portion 51 that is convexly formed toward the rear cuff 21 side has been described. However, only on the member on the rear cuff side of the belt, for example, the member corresponding to the rearmost part of the rear cuff to which the most force is applied,
Even if the belt-side curved contact portion is formed, it is possible to obtain substantially the same effect as in the above embodiment.

Further, in the first to fourth embodiments, the belts 33 and 3 are
Although an example in which 5, 65, 75, 85 are fixed to the front cuff 19 and the rear cuffs 21, 61, 71, 81 are pressed to the front cuff 19 side has been described, for example, one end of the belt is fixed to the rear cuff and the belt Even if the other end is connected and tightened and the front cuff is pressed toward the rear cuff, the same effect as in the above embodiment can be obtained.

[Effect of device]

In the ski shoe according to claim 1, since the contact portion of the belt with the outer shell is a curved belt-side curved contact portion that is convexly formed toward the outer shell side, the belt-side curved surface of the belt The contact part of the belt contacts the outer shell, the points of action of the tightening force by the belt are not located at the upper and lower ends of the belt, and the bending moment generated in the belt of the tightening device is located near the line of action of the tightening force. It can be suppressed significantly.

In the ski boot according to claim 2, since the outer shell abutment portion is a curved shell-side curved abutment portion that is convexly formed toward the belt side, the belt is the outer shell shell. The bending moment that occurs in the belt of the tightening device that comes into contact with the side curved surface-shaped contact portion and that the point of action of the tightening force by the belt is not located at the upper and lower ends of the belt but is located near the line of action of the tightening force and that occurs in the belt of the tightening device. It can be suppressed significantly.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of the ski shoe of the present invention. FIG. 2 is a rear view of the upper part of the ski boot showing a state in which the upper part of the ski boot of FIG. 1 is tightened by a tightening device. FIG. 3 is a vertical sectional view taken along the line III-III in FIG. FIG. 4 is a vertical cross-sectional view of the upper part of the ski boot showing a state in which the inclination angle of the rear cuff of FIG. 3 has changed. FIG. 5 is a vertical sectional view of an upper portion of a ski boot showing a second embodiment of the ski boot of the present invention. FIG. 6 is a vertical sectional view of an upper portion of a ski boot showing a third embodiment of the ski boot of the present invention. FIG. 7 is a vertical sectional view of an upper portion of a ski boot showing a fourth embodiment of the ski boot of the present invention. FIG. 8 is a vertical sectional view of an upper portion of a conventional ski boot. [Explanation of symbols of main parts] 11 …… ski shoes 13 …… outer shell 15 …… inner boots 31 …… tightening device 33,35,65,75,85 …… belt 51,67 …… belt side curved surface Contact part 77, 87 ... Curved contact part on the shell side.

Claims (2)

[Scope of utility model registration request] 1. A ski boot comprising an outer shell and an inner boot inserted into the outer shell, wherein the outer shell is provided with a tightening device for holding a foot by tightening a belt abutting against the outer surface of the outer shell. A ski boot, wherein a contact portion of the belt with the outer shell is a curved belt-side curved contact portion that is convexly formed toward the outer shell side. 2. A ski boot comprising an outer shell and an inner boot inserted into the outer shell, wherein the outer shell is provided with a tightening device for holding a foot by tightening a belt abutting against the outer surface of the outer shell. A ski shoe, wherein a contact portion of the outer shell with the belt is a curved shell-side curved contact portion that is convex toward the belt side.