JPH08187103A - Ski shoes made of plastic - Google Patents

Abstract

PURPOSE: To prevent edge faults by increasing the hardness of an inner side part more than the hardness of an outer side part and making the outer side part more flexible than the inner side part. CONSTITUTION: This is a ski boot made of plastic material and essentially provided with a shell 1 which surrounds a foot and a heel, a collar 2 which is connected to the shell 1 and formed in the shape of a collar, a tightening means 6 which tightens the collar 2 round a leg, a hard reinforce 4 for enabling the satisfactory movements of motion of the leg with respect to a ski. The reinforce 4 is fixed to the collar 2 and formed asymmetrically with respect to an approximately vertical plane which includes at least the axis a of the collar 2 and is extended from the heel of the boot to the front end. The upper part 43 of the reinforce 4 is provided for the inner side part of the boot, and its lower part 42 is provided on the back side of the connecting point 3 of the collar 2 for the overall length of the boot not to be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ski boot made of a plastic material, and more particularly to a shell that basically surrounds a foot and a heel, and a shaft that is connected to the shell and is formed in a collar shape. The present invention relates to a plastic ski boot provided with a means for tightening a collar around the leg and a hard reinforcement for ensuring a good movement of the leg movement for the ski.

[0002]

2. Description of the Prior Art In general, it is important to note that when skiing, all leg movements are transmitted to the ski in a complete and accurate manner and vice versa. Particularly good edge gripping to ensure precise control of the ski (edge grippin
g) (hereinafter referred to as “edge gripping”) or to restore edge gripping (renewed edge)
In the case of e gripping, the shoe plays a role as an intermediate between the leg and the ski. However, the plastic material from which the shoe is made, especially in collars, does not have sufficient hardness to serve its role as an intermediate.

Conventionally, for example, US patent US-408.
As disclosed in US Pat. No. 5528, shoes made of thermoplastic material are known, which consist of a shell and a collar connected to the shell by a U-shaped reinforcement. ing. The reinforcement is constituted by a steel rod of circular cross section and has a pair of branch portions extending on both sides of the rear side of the collar. The branches are further beveled toward the front to accommodate the pair of pieces required for the shell.

European patent application EP-A-04
No. 30821 also describes ski shoes.
It has a reinforcement, which is constituted by a rigid portion, is provided in a gutter which extends along the rear part of the collar and which has two lateral branches. , The lid is attached to the shell with a collar.

Furthermore, French patent application FR-A-265
No. 3310 describes a rear-entry ski boot. That is, this shoe
It is composed of a front cuff and a rear cuff,
Both have a shaft connected to the shell and two rigid parts (rig) connected to the shell, each side of the shoe, the sole or the point of connection of the cuff.
id rider), which extends along the cuff on each side of the shoe.

Furthermore, European patent application EP-A-
As described in 0582551, ski shoes provided with a reinforcement are known. This reinforcement has an arcuately shaped portion that is joined within the heel and that extends along the collar and a central portion.
An arch portion extending from the central portion to each side surface portion of the collar is provided. And because of the strength of these reinforcements, all these shoes have good hardness.

[0007]

However, the presence of this force is disadvantageous. As a matter of fact,
This is the edge grip on the outside of the ski.
When there is a "rip" (hereinafter "edge grip"), it may occur on the inner ski during high speed turns, which constitutes an edge fault (hereinafter "edge fault"). The hardness of the shoe helps hold the edge grip, but can cause it to exit the desired trajectory,
This often causes falls. On the contrary,
Providing the shoe with a certain degree of flexibility in this direction results in better edge faults by minimizing the effect of this support.

[0008] Known reinforcements also lead to an increase in the overall width of the shoe, especially on the inside of the shoe. Such an increase in the overall width of the shoes makes it easier for the shoes to come into contact with each other, such as when making a turn. Therefore, for example, when the direction is changed or when the slalom flag is hit, the relative movement of the shoes is disturbed. this is,
There was a problem of causing a fall.

An object of the present invention is to eliminate the above-mentioned drawbacks in shoes having a reinforcement. That is, the present invention has been made in view of the above problems, the problem is to make the hardness of the inner side surface portion higher than the hardness of the outer side surface portion, the outer side surface than the inner side surface portion. The point is to make the part flexible and prevent edge faults. Also, if necessary, the entire width of the shoes should not be increased so that the obstacles caused by the contact between the shoes should be reduced as much as possible.

[0010]

In order to achieve such an object, the plastic ski boot of the present invention is a ski boot formed of a plastic material, and basically,
A shell that surrounds the foot and heel, a collar that is connected to the shell and is formed into a collar shape, a tightening means that tightens the collar around the leg, and a rigid member that ensures that the ski moves well in the leg movement. A force fixed to the collar, formed asymmetrically with respect to a substantially vertical plane that includes at least the axis of the collar and extends from the heel of the shoe to the front end, and extends along the back of the collar. The upper part of the shoe is mainly provided on the inner side surface of the shoe.

And, if necessary, the lower part of the above-mentioned reinforcement is extended at least on the inner side surface of the collar, and is provided on the rear side of the joining point of the collar so as not to increase the overall width of the shoe. There is.

Further, it is effective that at least the upper portion of the above-mentioned reinforcement is exclusively extended to the inner side surface portion of the collar. Further, it is effective that the above-mentioned reinforcement is provided with a rear side support tongue piece extending upward in the upper part thereof. Furthermore, it is effective that the lower part of the reinforcement is extended to both side parts of the collar.

If necessary, the reinforcement is provided with a plurality of regions having different hardness. In this case, if necessary, apply the above force.
Basically, it is composed of two materials having a uniform thickness and different hardness. In addition, the material with high hardness is
The structure is provided with a region having a thickness equal to the total thickness of the reinforcement and a region having a small thickness filled with a material having low hardness.

Furthermore, if necessary, the above-mentioned reinforcement is provided with an edge portion which is made of a material having a low hardness. In this case, if necessary, the lower portion of the reinforcement is fixed to the collar by at least one rivet that penetrates a portion formed of only a material having low hardness. Further, the rivet is configured to be inserted only in the collar, if necessary.
Furthermore, if necessary, the rivet is inserted into the shell.

[0015]

According to the plastic ski boot having the above structure, the ski boot has different hardness between the inner side surface and the outer side surface. That is, the hardness of the inner side surface portion is higher than the hardness of the outer side surface portion. This shoe is
Ensuring complete control of the ski during precise edge-gripping on the inside flanks of the ski. As a result, the relative flexibility of the outer side of the shoe allows for edge faults, i.e., improved outer edge gripping of the ski.

Further, in a preferred embodiment, when the lower part of the reinforcement is provided on the rear side of the joining point of the collars, the increase in the total width of the shoes is suppressed, so that the obstacle due to the contact between the shoes is reduced. .

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A plastic ski boot according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows a plastic ski boot fitted with a reinforcement according to a first embodiment of the present invention, which has three sides.
It is a / 4 view perspective view. FIG. 2 is a view showing the reinforcement of the plastic ski boot according to the first embodiment of the present invention. FIG. 3 is a view showing the reinforcement of the plastic ski boot according to the second embodiment of the present invention. FIG.
FIG. 8 is a diagram showing a reinforcement of a plastic ski shoe according to a third embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, showing the reinforcement of the plastic ski boot according to the third embodiment of the present invention. FIG.
It is a figure which shows the reinforcement of the plastic ski shoes which concerns on the 4th Example of this invention. FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6, showing the reinforcement of the plastic ski boot according to the fourth embodiment of the present invention.

The plastic ski boot according to the first embodiment shown in FIG. 1 is a ski boot made of a plastic material and basically has a shell 1 surrounding a foot and a heel.
And a collar 2 (also referred to as a shaft or rod) which is connected to the shell 1 and is formed in a collar shape. The collar 2 is connected to the shaft by a pair of rivets 3, and is connected at the position of the ankle on each side surface. Shell 1
There is no fixed capacity. The collar 2 comprises at least one closing and tightening buckle 6. The sawtooth portion of the buckle 6 is drawn in the figure.

The collar 2 has a reinforcement 4 made of metal or hard plastic. The reinforcement 4 includes an upright portion 41 extending along the rear portion of the collar 2, is slightly bent toward the inner side surface of the shoe, and is fixed to the inner side surface of the shoe. The lower part of the reinforcement 4 is a tab 4 that extends toward the side of the inside of the shoe.
It is set by rivets 5 at 2. A tab 43 that extends in contact with the upper edge of the collar 2 is provided on the upper portion of the reinforcement 4. The tab 43 is, for example,
It is adhered using an adhesive or the like.

Further, in the reinforcement 4, a supporting tongue piece 44 which functions to support the rear portion of the leg is extended upward. Further, the reinforcement 4 is formed asymmetrically with respect to a substantially vertical plane including at least the shaft (a) of the collar and extending from the heel of the shoe to the front end.

The presence and shape of the reinforcement 4 is determined by the lateral force (lateral f) from the leg on the tab 43.
to ensure good transmission of the orces) towards the joint 3 of the collar 2 on the shell, in other words towards the sole.

Of course, a space is provided between the end of the tab 42 and the joint 3. This space is located in a region where there is no reinforcement, but is short, has very little flexibility, and can have even greater thickness. Therefore, it is almost negligible to directly transmit the lateral force from the leg to the sole. The interruption on the rear side of the joint 3 of this tab has the advantage, on the other hand, that it does not create an excessive thickness at the joint which would increase the overall width of the shoe.

The outer side surface of the shoe is hidden and invisible in the drawing, but is freely released from the reinforcement,
Reliable flexibility is retained. However, it is possible to make the attachment of the lower part of the reinforcement even more secure. That is, the lower part has a second tab attached to the outer side surface of the shoe. Such an embodiment is shown in FIG. 3 with a tab 45 'added to the bottom of the reinforcement. The other parts 41 ', 42', 43 'and 44' of the reinforcement are the corresponding parts 41 to 44 of the reinforcement according to the first embodiment.
Is the same as

Reinforcement can be utilized to support the straps. This band, which this type of shoe is typically provided on the top of the collar, holds the inner boots forward tilted. The reinforcement may also support a buckle that closes and tightens the collar.

In order to better adjust the effect of the reinforcement, that is to say, the transmission of the force from the legs to the skis is increased, without significantly increasing the thickness of the collar, which makes the shoe uncomfortable. In order to ensure, it is advantageous to use different hardness reinforcements, ie to provide a range of high hardness and a range of low hardness.

This gives rise to the situation of locally changing the thickness of the reinforcement, but basically it is desirable to have a constant thickness of the reinforcement. To obtain a reinforcement having a constant thickness and different hardnesses, two materials having different hardnesses are associated with each other.
A first example of such a reinforcement is shown in FIGS.

The approximate shape of the reinforcement 70 is
It is almost the same as the reinforcement shown in FIG. Tab 72
And 73 correspond to the tabs 42 and 43 and support tongue 74
Corresponds to the support tongue 44. This reinforcement is composed of two materials A and B having a uniform thickness and different hardness. Material A is relatively hard. This is, for example, composed of polyurethane filled with glass fiber, and is a synthetic material based on glass fiber, carbon fiber or KEVLAR (registered trademark), and these fibers are filled with resin, It is preferably composed of a synthetic material filled in epoxy resin, or else of polyamide 11 if glass fiber is filled.

Material B is relatively flexible and is composed of, for example, polyurethane or PEBAX®. The hard material A is spread over the entire reinforcement except the edge region 80. The edge region 80 is formed exclusively of the flexible material B. This reinforcement is made of hard material A
Area 8 where the entire thickness of the reinforcement is occupied by
1, 82, 83, 84, 85 are provided. Area 81
Extends into the support tongue 74. Area 82, 8
3, 84 and 85 ensure an adjusted hardness for the transmission of lateral support.

The hard material A in the parts not belonging to these regions 81 to 85 has a sufficiently small thickness, for example a thickness equal to about half the total thickness of the reinforcement, As shown in, it extends in the central portion of the thickness. The flexible material B is filled in the different thickness portions on both sides of the central wall portion of this thickness.

The reinforcement 70 is provided with an insertion hole 8 in the tongue piece 74 for the passage of the rivet fixed to the collar. In addition, on the inner surface of the lower portion, there are provided openings for the holes 9 and 10 for fixing the portion to the collar by rivet means. The holes 9 and 10 are provided in the portion of the reinforcement which is made solely of the flexible material B.

In competition shoes, rivets penetrate the shell to better and statically transfer power from the legs to the skis. If this reinforcement is adhesive (g
If fixed by luing, these holes 9 and 10 will not be drilled. Also, in the example shown in the figure,
The reinforcement has holes 11 for access to adjust the device.

The reinforcement 70 is manufactured by an overmolding method, or double-injected.
on).

A reinforcement 70 'shown in FIGS. 6 and 7.
Is not different from the reinforcement 70 in appearance. The difference in effect is the area of the thickness of the reinforcement that is partially occupied by the hard material A, which forms the inner wall of the reinforcement against which the Material B forms the outer wall of the reinforcement.

[0034]

As described above, according to the plastic ski boot of the present invention, the upper portion of the reinforcement is provided on the inner side surface portion of the shoe and the outer side surface portion is free, so that the inner side surface portion is free. The hardness of the outer side is higher than that of the outer side, so the relative flexibility of the outer side of the shoe can allow edge faults and improve the outer edge gripping of the ski. it can.
That is, when there is an edge grip on the outside of the ski, the shoe has a certain degree of flexibility in this direction during high-speed turns, etc., so that the edge fault is suppressed and the edge gripping on the outside of the ski is suppressed. As the ski can be improved, it is possible to ensure accurate control of the ski.

Further, when the lower part of the reinforcement is provided on the rear side of the connecting point of the collar, it is possible to suppress an increase in the overall width of the shoe, and therefore it is possible to reduce the trouble caused by the contact between the shoes. That is, conventionally known reinforcements lead to an increase in the overall width of the shoe, especially on the inside of the shoe, and such an increase in the overall width of the shoe facilitates contact between the shoes, such as during a turn. However, in the present invention, this drawback is eliminated, and the relative movement of the shoes is prevented, for example, when the direction is changed or when the slalom flag is hit. The risk of interfering reinforcement can be reduced.

When at least the upper part of the reinforcement is exclusively extended to the inner side surface of the collar, the force of the leg can be surely received, and the force of the inner side surface can be surely transmitted. can do. Further, when the rear supporting tongue is provided on the upper portion of the reinforcement, the function of supporting the rear portion of the leg is increased, and accordingly, the leg can be reliably held. Furthermore, when the lower portion of the reinforcement is extended to both side surfaces of the collar, the lower portion can be supported at two points, so that the lower portion of the reinforcement can be attached more securely.

Further, when the reinforcement is constituted by a plurality of regions having different hardnesses, the support effect of the reinforcement can be adjusted, so that the force transmission from the leg to the ski can be achieved. It can be made even more reliable. In this case, when the reinforcement is made of two materials having a uniform thickness and different hardness, the thickness of the collar is not increased so much, so that it is possible to prevent the situation where the comfort of the shoe is impaired. .

Furthermore, when the material having high hardness is provided with a region having a thickness equal to the total thickness of the reinforcement and a region having a small thickness filled with the material having low hardness, the hardness The degree of freedom in adjustment can be increased, that is, the degree of freedom in adjusting the support effect of the reinforcement can be increased.

Furthermore, in the case where the reinforcement has an edge portion composed solely of a material having low hardness,
Since the edges can be made flexible, the wearability can be improved. In this case, when the lower part of the reinforcement is fixed to the collar by at least one rivet that penetrates the portion formed only of the material having low hardness, the rivet is attached to the flexible member, and thus the holding property is increased. Is improved.

Further, when the rivet is configured to be inserted into the shell, the force from the leg can be better transmitted to the ski through the rivet, which is extremely useful for competitive shoes and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a plastic ski boot fitted with a reinforcement according to a first embodiment of the present invention as seen from a side of the plastic ski boot.

FIG. 2 is a diagram showing the reinforcement of the plastic ski boot according to the first embodiment of the present invention.

FIG. 3 is a view showing a reinforcement of a plastic ski shoe according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a reinforcement of a plastic ski shoe according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, showing the reinforcement of the plastic ski boot according to the third embodiment of the present invention.

FIG. 6 is a view showing a reinforcement of a plastic ski shoe according to a fourth embodiment of the present invention.

FIG. 7 is a view showing the reinforcement of the plastic ski boot according to the fourth embodiment of the present invention, VII-VII in FIG.
It is a line sectional view.

[Explanation of reference symbols] 1 shell 2 collar 3 rivet 4,4 'reinforce 5 rivet 6 buckle 8 insertion hole 9, 10, 11 hole 41, 41' standing portion 42, 42 'tab 43, 43' tab 44, 44 ' Supporting tongue a Color shaft 45 'Tab 70, 70' Reinforce 71 Stand 72 Tab 73 Tab 74 Supporting tongue A Material B Material 80 Edge region 81, 82, 83, 84, 85 Hard material A Area occupied by

Claims (12)

[Claims] 1. A ski boot made of a plastic material, essentially a shell (1) surrounding a foot and a heel.
A collar (2) connected to this shell and formed in a collar shape, a tightening means (6) for tightening the collar around the leg, and a hard member for ensuring that the ski moves well in the leg movement. And (4, 4 ', 70, 70') of the reinforcement (4, 4 ')
Is asymmetrically formed with respect to a substantially vertical plane fixed to the collar (2) and including at least the axis (a) of said collar and extending from the heel of the shoe to the front end, extending along the rear part of the collar and its upper part ( 43, 73) are mainly provided on the inner side surface of the shoe, which is a plastic ski boot. 2. A lower portion (42, 4) of the reinforcement.
2 ', 45', 72) are extended at least on the inside flanks of the collar and are provided on the rear side of the collar's connection point (3) in order not to increase the overall width of the shoe. The plastic ski shoe according to claim 1. 3. The plastic ski boot according to claim 1, wherein at least an upper portion of the reinforcement is exclusively extended to an inner side surface of the collar. 4. The reinforcement (4, 4 ′, 70,
70 ') is provided with a rear support tongue (44, 44', 74) extending upward in the upper part thereof, the plastic ski according to claim 1, 2 or 3. shoes. 5. The lower portion (42 ', 4) of the reinforcement.
5. The plastic ski boot according to claim 1, 2, 3 or 4, wherein 5 ') is provided on both sides of the collar. 6. The reinforcement (70,70 ')
6. The plastic ski boot according to claim 1, 2, 3, 4, or 5, characterized in that the plurality of regions having different hardnesses are provided. 7. The reinforcement (70,70 ')
7. The plastic ski boot according to claim 6, characterized in that it is basically composed of two materials (A, B) having a uniform thickness and different hardness. 8. The material (A) having high hardness comprises a region having a thickness equal to the total thickness of the reinforcement and a region having a small thickness compensated by the material (B) having low hardness. The plastic ski boot according to claim 7, wherein the ski boot is made of plastic. 9. The reinforcement (70, 70 ').
9. The plastic ski boot according to claim 8, characterized in that it comprises an edge (80) which is composed solely of a material (B) of low hardness. 10. A lower portion (72) of the reinforcement.
10. The plastic ski boot according to claim 9, characterized in that it is fixed to the collar with at least one rivet (5) which penetrates a site made only of a material (B) of low hardness. 11. The plastic ski boot according to claim 10, wherein the rivet (5) is inserted only in the collar. 12. The rivet (5) comprises a shell (1).
The ski ski made of plastic according to claim 10, which is inserted through the ski boot.