JPH0249601A - Foot shape originating method for skiing boots and structure for skiing boots for its origination - Google Patents

Abstract

PURPOSE:To form foot shapes easy to walk on and to fit the feet of a user by fitting bag-shaped packs consisting of the first films of small thickness and large extensibility and the second films of large thickness and little extensibility, on inners, and by forming foam bodies with the foaming injection of foaming material in a state that the user wears the inners. CONSTITUTION:Inners 2 are fitted on outers 3 so that each one end of the center runners 5e and delivery pipes 5f of packs may be exposed from the outers 3. Then, in a state that a user wears the inners, foaming vessels 6 are connected to the center runners 5e. Foaming material is conducted through the center runners 5e and is foaming-injected into the packs 5. Along with the increment of a foaming-injected quantity, pressure in the packs 5 is increased, and by and by, the pressure reaches specified pressure, and foaming injection is stopped, and the foaming material is solidified and is formed to be foam bodies A. The inners 2 are taken out of the outers 3, and the center runners 5e and the delivery pipes 5f are removed from, and the open slots 5c of the skins of the inners after removed from are sealed with sealing tapes, and the forming process of foot shapes is completed.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for creating an original foot shape for ski boots in which an inner boot (hereinafter referred to as "inner") is removably attached to an outer shell (hereinafter referred to as "outer"), and The present invention relates to the structure of a ski boot for carrying out the method.

(Prior Art) Conventionally, ski boots in which an inner 2 is detachably attached to an outer 3 are generally used, as shown in FIGS. 22 and 24.

The ski boots 1 shown in FIGS. 22 and 24 are front entry type and rear entry type ski boots, respectively. It is configured to be worn.

By the way, each of the above-mentioned ski boots l must be able to securely hold the feet without causing any pain to the user, that is, be able to fit the feet and be comfortable to wear. As shown in FIGS. 23 and 25, a foot-shaped pad P made of a plate-shaped foam with pad pieces Pa provided around the circumference on both sides is attached to the inner skin 2a and the outer skin. 2b and after the foot shape is formed, or (not shown), a space is provided between the inner skin and the outer skin of the undercarriage of the inner, and when the user wears the Inject the foamable resin composition into the
It is known that a foot shape is formed by molding a foam in the space (an innerwear with a foot shape forming function).

(Problem 21 to be solved by the invention) However, the ski boots l shown in FIGS. 22 and 24 equipped with the inner 2 shown in FIGS. 23 and 25 may not necessarily be comfortable to wear depending on the user. This is difficult to say, and it is difficult to sufficiently improve the comfort of wearing shoes.

Of course, there are individual differences in the shape of the feet used, and even if the size is the same, the width of the foot, the height and color of the instep, the size, shape and position of the foot, etc. will vary greatly. Normally, the last of the ski boots 1 is formed by attaching a foot last pad P selected based on the user's average data. Therefore, depending on the stones used, your feet may move inside your ski boots, or your feet may move inside your ski boots.
In some cases, it may not be comfortable to wear.

Therefore, if the comfort is not good, pad pieces are attached to the outer skin 2b of the inner to improve the comfort, but the size and placement of the pad pieces must be selected through trial and error. However, the process of pasting is complicated, and it is difficult to sufficiently improve the comfort of wearing shoes.

In addition, even if the shoes are comfortable, foot shape bad (I)
However, as with the case in 1-, "C" tends to deteriorate over time and with frequency of use, making it less comfortable to wear.
It is difficult to improve the comfort of shoes.

On the other hand, ski boots equipped with an in-light with a foot molding function have a foam molded between the inner skin and outer skin around the foot of the inner to create a foot shape that corresponds to the individual foot shape used. Molded for a comfortable fit. However, there are cases where the foot is put under too much pressure and a comfortable fit cannot be achieved, and the last of the foot needs to be re-molded, but since the foam is integrally molded with the inner, this is not possible. be. In addition, the foam molded inside the innerwear deteriorates in the same way as the foot-shaped pad P described in item 1-1, and the comfort of wearing the shoe deteriorates, but it is difficult to improve the comfort of the wearer in the same way as item 1-1.

The present invention has been made in view of the above-mentioned conventional situation, and its purpose is to form ski boots that are comfortable to wear and to create an original foot shape for ski boots that can improve the comfort of ski boots. The object of the present invention is to provide a ski boot structure that allows the method to be carried out simply and quickly.

(Means for Solving the Problems) A method for creating an original foot shape for ski boots according to the present invention integrates a first film that is thin and has high malleability and a second film that is relatively thick and has low malleability. A forming bag formed into a bag shape (hereinafter referred to as "pack") is attached to the undercarriage of the inner with the first film side facing inside, and after the inner is attached to the outer, the foam material is The invention is characterized by injecting foam into the bag, solidifying the foamed material in the bag and forming it into a foam, and molding the last of the ski boots depending on the sound of use. It is something.

When molding a completely new last, the bag may be attached between the inner skin and the outer skin of the inner, or in the 4'' groove of the outer skin.

When improving the comfort of the innerwear shown in FIG. 23 or 25, the outer skin of the innerwear may be cut open, the existing foot-shaped pad may be removed, and a pack may be attached in place of the foot-shaped pad. Alternatively, the foot pad may be attached to the epidermis without being removed. In addition, for those equipped with an inner that has a foot-shaped molding function, the pack is attached to the outer skin.

It is preferable that the bag is formed in a shape in which the molded foam can hold at least the sections on both sides, and that a notch is provided in the front part around the ankle so as not to restrict the forward tilting movement of the ankle. The first film and the second film of the pack are preferably made of a synthetic resin film material such as polyvinyl chloride, polyethylene, or nylon, and the second film includes an injection pipe for injecting the foam material;
A discharge pipe for discharging excess foam material and air is connected in an airtight manner. It is preferable that the first film is provided with a removable attachment means such as Velcro or double-sided adhesive tape so that the pack will not be dislocated.

Foamed materials are those that are solidified and molded under pressure and have a small uniform diameter, high apparent density, and high elasticity and restoring force, such as foamable resin compositions containing isocyanate-based polyurethane. preferable.

Furthermore, the structure of the ski boots of the present invention is characterized in that the outer skin around the inner leg is formed to be openable and closable at the part where the foot shape is formed using removable means such as Velcro or double-sided adhesive tape. It is. .

(Function) According to the method for creating an original ski boot foot shape of the present invention, the pack expands by injecting the foam material, but the expansion is limited by the user's foot and outerwear, and the amount of foam injection is limited. As the pressure inside the pack increases,
Eventually, a predetermined pressure is reached, foam injection stops, and the foam material solidifies and is molded into a foam body.

At that time, the first film of the pack is thin and has high malleability,
Since the second film is relatively thick and has low malleability, the first film deforms and expands, and as the pressure inside the pack increases, the first film is pressed and deforms. Since it is attached to the innerwear with the first film side facing inside, it deforms in accordance with the shape of the user's foot. Therefore, the foam is molded into a shape that corresponds to the shape of the user's foot, and because it is solidified and molded under pressure, the foam has a small and uniform diameter, has a large apparent density, and has good elasticity and restoring force. Excellent.

Whether the pack is attached between the inner skin and the outer skin of the inner layer or to the outer skin, the foam molded into the pack is molded into a shape that corresponds to the shape of the user's foot. . Therefore, both when molding a completely new last and when improving comfort, a last that fits the user's foot is molded, and ski boots that are comfortable to wear can be molded.

Next, according to the structure of the ski boots of the present invention, when molding a completely new foot shape or improving comfort, a pack can be attached between the inner skin and the outer skin of the inner layer, or when forming an existing foot shape. The pack is attached after the pad is removed, but each operation does not require the conventional work of cutting open the inner or sealing and restoring the incised part, but simply opening and closing the outer skin of the inner. This allows the foot molding operation to be performed easily and quickly.

(Example) Embodiments of the present invention will be described with reference to the drawings.

1 to 14 are explanatory diagrams of the first embodiment of the present invention.
In order to improve the comfort of front-entry ski boots l equipped with the inner 2 shown in the figure, the pack 5 shown in Figs. It is configured to be molded and molded.

The pack 5 shown in FIGS. 2 and 3 has a bag-like shape in which a first film 5a and a second film 5b are welded or bonded with an adhesive at the peripheral edge so as to store the foamed material. It is formed in a shape corresponding to the above-mentioned part so that it can be attached from the right side of the middle part of the inner 2 to the left side of the instep part through the heel part. Further, a notch 5C is provided in the front part of the periphery of the ankle so as not to restrict the forward tilting motion of the ankle.

The first film 5a and the second film 5b are made of polyvinyl chloride material, and so that only the first film 5a can be deformed when the foaming material is injected, the preceding film 5a is the latter 5b.
It is formed to be thinner and have greater malleability.

The pack 5 is attached to the inner 2 around the periphery of the first film 5a.
A double-sided adhesive tape 5d is attached to the pack 5 so that the pack 5 does not shift when attached.

Two injection tubes 5e are provided approximately in the center of the second film 5b.
is attached in an airtight manner, and a discharge pipe 5' is attached in an airtight manner on each side.The injection tube 5e is formed to have a large diameter so that the foamed material to be injected smoothly passes through. The discharge pipe 5f is formed to have a relatively small diameter and a thick wall so that it does not easily collapse when compressed. In addition, the mounting edges of the injection pipe 5e and the discharge pipe 5r are such that the outer pipes 5e and 5r are mounted at a small angle with respect to the second film 5b, and the foam material is foam-injected. Each edge is beveled off to avoid irritating the user's feet.

The pack 5 is constructed as described above, and the foot shape of the ski boots 1 is formed as follows.

First, as shown in FIG. 4, the inner 2 shown in FIG.
Cut open the epidermis 2b at the bottom of the area where the foot-shaped pad P is attached and [1 m], and remove the existing foot-shaped pad P. Then, an opening 2c is formed in the inner skin 2b through which the injection pipe 5e and discharge pipe 5r of the pack are inserted.
~8 Attach the pack 5 to the inner 2 as shown in Figure 8. The pack 5 is attached by fixing it to the inner skin 2a of the inner layer with the first film 5a side facing inward using double-sided adhesive tape 5d, and fixing the peripheral edge portion to the bottom portion 2d of the inner layer using adhesive 7. The shape of the pack 5 when installed is as shown in FIG. 9 and FIG. 1O.

Next, as shown in FIGS. 1I to 13, the cut out bottom and heel of the outer skin 2b of the innerwear are adhered with an adhesive, and the inscribed area is further sealed with a sealing tape 1''. After that, as shown in FIG.
and one end of the discharge pipe 5f is exposed from the outer 3,
Attach inner 2 to outer 3. Then, the foam container 6 is connected to the injection pipe 5e while the user is wearing it. The foaming container 6 stores a foaming material made of a foamable resin composition that generates a foaming effect by mixing a foaming liquid containing an isocyanate-based polyurethane and a stabilizing liquid.
The foam material is foamed and injected into the bag 5 through the injection pipe 5e.

The pack 5 expands due to the foam injection, but the expansion is limited by the user's feet and the outer 3. As the amount of foam injection increases, the pressure inside the pack 5 increases, and eventually reaches a predetermined pressure and foam injection stops, and the foam material solidifies and is molded into a foam as shown in FIG. be done. At that time, the first film 5a of the pack 5 is thin and has high malleability, the second film 5b is thick and has low malleability, and the pack 5 is attached with the first film 5a side inside. As the pressure inside the first film 5a increases, the first film 5a deforms in accordance with the shape of the user's foot. That is, the foam A molded into the pack 5 is molded into a shape that corresponds to the last of the user's foot. Since it solidifies under pressure, it is molded with excellent elasticity and restoring force.

Note that, during foam injection, air and excess foaming material within the pack 5 are discharged from the discharge pipe 5'', but the pressure within the pack 5 is not reduced because the diameter of the discharge pipe 5'' is small.

After the foam A is formed in the pack 5 as described above, the inner 2 is taken out from the outer 3, the injection pipe 5c and the discharge pipe 5r are taken out, and the opening 5c in the outer skin of the inner is sealed with sealing tape. to complete the foot molding process.

In this embodiment, the foot shape of the ski boots L is formed by molding the foam A inside the pack 5 as described above, but the shape of the foam corresponds to the foot shape of the user as in the case of two pairs of shoes. Because it is molded as a shoe and has excellent elasticity and restoring force, it is molded to a comfortable foot shape that fits the user's foot, and it also presses strongly against the user's foot for a comfortable fit. If t5 is not possible, since the foam A is molded inside the pack 5, remove the foam A together with the pack 5 by cutting open the inner skin 2b resealed with the tooling tape T. Then, the bag 5 can be attached again and the molding of the foam, that is, the molding of the foot mold can be redone. Also, in place of pack 5 shown in Figure 2,
A pack 5 shown in FIG. 5 may also be used. The pack 5 shown in FIG. 15 has a notch 5g in the part corresponding to the heel of the pack 5 shown in FIG. It is possible.

Next, FIGS. 16 to 18 are explanatory diagrams of a second embodiment of the present invention. In order to improve the comfort of the rear entry type ski boots 1 equipped with the inner 2 shown in FIG.
The pack 5 shown in FIG. 6 is used to shape the foot shape of the ski boots 1 according to the individual user.

The pack 5 shown in FIG. 16 is the same as the one shown in FIG. 2, except that the outer shape is formed corresponding to the area from the inner section of the inner 2 to the outer section via the instep. It is configured. Note that the same reference numerals as in FIG. 2 indicate the same functional members.

The molding of a foot shape using the pack 5 is performed as follows. First, as shown in FIG. 17, the inner skin 2b shown in FIG. 25 is cut open, the existing foot-shaped pad P is removed, and the injection tube 5c of the pack is inserted into the inner skin 2b.
Then, as shown in FIG. 18, the pack 5 shown in FIG. After fixing and attaching it to the inner skin 2a and gluing the cut-out part of the inner skin 2b with adhesive, the pack 5 is sealed with a sealing tape T.Although not shown, the pack 5 A foam material is molded inside to create a comfortable foot shape that fits the user's foot.In addition, if the foot is pressed too hard and a comfortable fit cannot be obtained, please use the first The foot last can be reshaped in the same manner as in the example.

19 and 20 are explanatory diagrams of a third practical example of the present invention, in which a pair of backs 5 shown in FIG. 19 are used in place of the pack 5 in the second embodiment to form the foot shape of ski boots l. It is configured to be shaped according to the individual user.

The pair of Becks 5 shown in FIG. 19 have the same structure as the one shown in FIG. 2, except that they are formed in shapes corresponding to the inner section and the outer section, respectively. Note that the same reference numerals as in FIG. 2 mean the same functional members.

The molding of the foot shape using the pack 5 shown in FIG. 19 is carried out in the second step after the outer skin 5b of the inner is cut open and the pack 5 is attached to the positions corresponding to the inner and outer sections as shown in FIG. Foam is molded inside the bag 5 in the same manner as in the example,
The last is shaped to securely hold the user's feet from both sides.

The inner 2 of the rear entry type ski boot shown in FIG. 21 has a Velcro 8 attached to the region where the outer skin 2b of the undercarriage forms the last of the foot, and is configured to be openable and closable by the Velcro 8.

For example, when applying the second embodiment to the foot shape molding, the removal of the existing foot shape burd P and the attachment of the pack 5 are performed by peeling off the Velcro 8 and opening the outer skin 2b. After the pack 5 is attached, the outer skin 2b is fixed firmly by the Velcro 8 by closing and pressing the outer skin 2b. Therefore, the foot molding operation in the second embodiment can be easily and quickly carried out without the need to cut open the skin 2b and seal the wave cut portions with adhesive and sealing tape T.

In addition, in each of the above embodiments, in order to improve comfort,
The existing foot-shaped pad is removed and a pack is attached between the inner skin and the outer skin of the inner to form the foot shape, but even if the pack is attached to the outer skin and the foot shape is formed In this case, the operations of cutting open the epidermis, removing the existing foot pad, and sealing the incision are often omitted, allowing the foot shape to be formed more easily and quickly.

In addition, when molding a new foot shape, it is done by attaching a pack between the inner skin and the outer skin of the inner layer, or to the outer skin. is formed.

If the foot is not comfortable to wear due to pressure, the foam can be removed together with the pack, the pack can be reattached, and the shoe can be worn again.

(Effects of the Invention) According to the method for creating an original foot shape for ski boots of the present invention, a pack formed in a bag shape by a first film that is thin and has high malleability and a second film that is thick and has low malleability. The pack is attached to an inner wearer, and while the user is wearing it, the foam is injected into the foot and the foam is molded to form a foot shape. In either case, a comfortable foot shape that fits the user's foot is molded to improve the comfort of the foot. Furthermore, even if the shoe is not comfortable to wear due to pressure on the feet, the foam can be removed together with the pack, the bag can be reattached, and the bag can be reattached. Therefore, unlike conventional ski boots with a foot molding function, it is possible to provide ski boots that can be easily reworked. Furthermore, even if ski boots have become uncomfortable to wear and have reached the end of their lifespan, they can be recycled to extend their lifespan.

Furthermore, the foam molded inside the bag is solidified and molded under pressure and has excellent elasticity and restoring force, so the function of the last is maintained over a long period of time.

According to the structure of the ski boots of the present invention, the outer skin of the inner layer is formed so that it can be opened and closed, so that by applying the above-mentioned method for creating an original foot shape, there is no need for complicated work. , can be carried out in-situ and quickly.

[Brief explanation of the drawing]

1 to 14 are explanatory diagrams of the first embodiment of the present invention, FIG. 1 is an explanatory diagram of the state of molding the foot shape of ski boots, FIG. 2 is a front view of the pack, and FIG. 3 is the same as that of FIG. FIG. 4 is an enlarged cross-sectional view taken along the line (1)-1 (2) and is an explanatory diagram of the state immediately before the existing foot pad is removed. Figures 5 to 10 are explanatory diagrams of the state immediately after the pack shown in Figure 2 is attached to the inch--, Figure 5 is a lower perspective view, Figure 6 is a rear view, Figure 7 is an upper slope view,
FIG. 8 is a side view. FIG. 9 is a 1-side perspective view of the pack attachment, and FIG. 10 is a side perspective view. 11-13 are explanatory views of the pack shown in FIG. 2 in a state in which the pack has been installed, with FIG. 11 being a bottom perspective view, FIG. 12 being a rear view, and FIG. 13 being a top perspective view. FIG. 14 is an enlarged sectional view taken along the line ■-■ in FIG. 1, and shows the state when the foam is molded. FIG. 15 shows a modification of the pack shown in FIG. 2. Figures 16 to 18 are explanatory diagrams of the second embodiment of the present invention, Figure 16 is a perspective view of the shape of the pack attachment, Figure 17 is an explanatory diagram of the state immediately before removing the existing foot pad, FIG. 18 is an explanatory diagram of the state in which the pack shown in FIG. 16 has been completely installed. Figures 19 and 20
The figures are explanatory diagrams of a third embodiment of the present invention, FIG. 19 is a perspective view of the shape of the pack installed, and FIG. 20 is an explanatory diagram of the state in which the pack shown in FIG. 19 has been installed. FIG. 21 is an explanatory diagram of a fourth embodiment of the present invention. Fig. 22 is an overall perspective view of a conventional front entry type ski boot, Fig. 23 is a perspective view of the inner part of the ski boot shown in Fig. 22, and Fig. 24 is an overall perspective view of a conventional rear entry type ski boot. , FIG. 25 is a perspective view of the inner part of the ski boot shown in FIG. 24. 1...Ski boots, 2...Inner boots (or inner), 2a...Inner skin, 2b...Same outer skin, 2c...Same hole, 2d...Same bottom, 3. ... Outer shell (or outer), 4... Buckle, 5... Forming back (or pack),
5a...first film of the pack, 5b...also second film
Film, 5c...same notch, 5d...same double-sided adhesive tape, 5c...same injection pipe, 5r...same discharge pipe, 6...foaming container, 8...attached to the inner skin Velcro, A...foam, P...
Foot-shaped pad, T... ringing tape.

Claims (2)

[Claims] (1) A method for creating an original foot shape for ski boots, in which the foot shape of ski boots, in which an inner boot is removably attached to an outer shell, is molded into a shape according to the user.
A forming pack formed into a bag by integrating a thin, highly malleable first film and a relatively thick, relatively low malleable second film is placed around the underbody of an inner boot with the first film side facing inside. Attaching the inner boot to the outer shell, and injecting a foaming material into the forming pack while the user is wearing it, solidifying the injected foaming material within the forming pack to form a foam. A method for creating an original foot shape for ski boots featuring the following. (2) A structure of a ski boot comprising an inner boot removably attached to an outer shell, characterized in that the skin around the underbody of the inner boot is formed to be openable and closable at the part where the last is formed. .