WO2021194389A1

WO2021194389A1 - Shoe stretcher

Info

Publication number: WO2021194389A1
Application number: PCT/RU2021/050042
Authority: WO
Inventors: Игорь Анатольевич ЕФРЕМОВ
Original assignee: Игорь Анатольевич ЕФРЕМОВ
Priority date: 2020-03-27
Filing date: 2021-02-18
Publication date: 2021-09-30
Also published as: RU2723840C1

Abstract

The invention relates to items for shoe care. A stretcher for shoes, comprising a toe element, a heel element, and a length adjuster in the form of a spacer element connecting the toe element and the heel element and adjusting the distance between them, wherein the toe element is equipped with a stiffening rib. The spacer element is in the form of a straight cylindrical rod with a screw thread on one end for fixation in the stiffening rib, the heel element is in the form of a hemisphere with a leg which fixes the other end of the spacer element, and the toe element comprises a plurality of openings for accommodating convex pads. The spacer may be used both for preserving the shape of the front part of the shoe during storage, and for stretching the shape of the shoe to fit individual physiological features of the wearer's feet, raising the effectiveness of use.

Description

Shoe stretcher.

The invention relates to articles for shoe care for maintaining and restoring the shape of the shoe after use, as well as for correcting the shape of the shoe so that it fully conforms to the shape of the user's foot.

Various shoe stretcher designs and holder shapes are widely known in the art.

Patent RU 2236806 (publ. 09/27/2004) discloses a shoe correction device installed inside a shoe for stretching the leather of the upper to ensure that the shape of the shoe matches the user's foot. The device contains a front block, which is designed to resiliently apply outward pressure to the skin of the upper of the shoe, while in contact with the upper side and the toe of the shoe. Also, the device contains a rear last, which is located behind the front last, and is designed to resiliently apply outward pressure to the skin of the upper of the shoe and in contact with the heel of the shoe, while the rear last contains a pressure wall that faces the front last and has a horizontal through hole, and length adjuster, which is designed to connect the front shoe to the rear shoe and adjust the distance between the front and rear shoes. In this case, the length adjuster contains a connecting rod, a control lever, an axle connected to the rear block with the possibility of turning the control lever on an axis to adjust the distance between the front and rear shoes by moving the connecting rod in the longitudinal direction, and a spring for elastic separation of the rear shoe from the front pads. The disadvantages of this correcting device include the complexity of the design with many small parts, which reduces the reliability of the device, complicates the process production, and also causes difficulties for the user when setting up the device in accordance with their requirements.

The closest to the claimed technical solution is a mold holder according to the patent RU 104030 (publ. 05/10/2011), containing a toe element corresponding to the shape of the front part of the shoe, a heel element and an elastic spacer bar installed between them, according to the utility model, the toe element is equipped with a its inner surface with a fastening element made in the form of a sleeve with a hole for fixing one end of the spacer rod, mounted on two supports located on both sides of the sleeve symmetrically relative to the plane of the longitudinal section of the toe element. In addition, the toe element is additionally provided with a stiffener located on its inner surface orthogonal to the longitudinal section plane of the toe element. In this case, the spacer rod of the claimed mold holder is made in the form of an elastic spring.

This device is only intended to maintain and restore the original shape of the shoe, and does not allow the shoe to be reshaped to fit the user's foot. In addition, the use of a spacer rod in the form of an elastic spring in this device leads to a decrease in the durability of the device, due to the destruction of the sleeve of the heel element, because due to the influence of elastic forces accompanying the bending of the rod, the walls of the hole will gradually collapse. Also, when using this device, the heel of the shoe may be damaged due to strong pressure on it.

The problem to be solved by the present invention is to create a reliable construction of a stretcher for shoes, which would make it possible to correct the shape of the shoe so that the shoe fully matches the user's foot, as well as to use during seasonal storage of the shoe to restore its original shape.

The technical result of the invention is to increase the efficiency of using the structure by increasing the reliability and ease of use, both for maintaining the shape of the front of the shoe during storage, and for stretching the shape of the shoe for the individual physiological characteristics of the user's feet.

The specified problem is solved, and the technical result is achieved due to the fact that the stretcher for shoes contains a toe element corresponding to the shape of the front part of the shoe, a heel element and a length adjuster in the form of a spacer element. The spacer element has a cylindrical straight rod shape with a thread applied from one end to the middle, serves to connect the toe and heel elements and adjust the distance between them. In this case, the toe element is provided with a stiffening rib located on its inner surface, and the stiffening rib has a pressed-in metal sleeve with an internal thread in the center for fixing one end of the spacer element. The stiffening rib is located perpendicularly or at an angle of at least 65 ° to the longitudinal plane of the toe element.

The heel element is made in the form of a hemisphere with a leg located in its center and fixing the other end of the spacer element. The leg of the heel element has an octahedron shape in cross-section.

The toe element contains a plurality of holes to accommodate convex pads on one side of various heights, having a threaded rod on the reverse side. Convex cover plates in the holes are fixed with fasteners, for example, in the form of wing nuts. Using convex overlays, you can adjust the width of the product in accordance with the individual

V physiology of the user's foot by stretching the toe of the shoe in the right place.

The essence of the invention is illustrated by drawings.

FIG. 1 is a general view of a stretcher for shoes, where:

1 - toe element; 2 - heel element;

3 - spacer element;

10 - convex strip.

FIG. 2 - the toe element is shown (bottom view), where:

4 - stiffener; 5 - threaded bushing;

6 - holes.

FIG. 3 - shows the heel element, side view and in cross section, where:

7 - hemisphere; 8 - leg;

9 - hole for the spacer.

FIG. 4 shows the options for the manufacture of convex linings of various heights, where.

11- head; 12 - threaded rod

13 - fastening element.

As shown in FIG. 1, a stretcher for shoes contains a toe element (1) corresponding to the shape of the front part of a shoe, a heel element (2) and a length adjuster in the form of a spacer element (3) having a straight cylindrical shape of a rod with a thread applied to its middle. Polypropylene can be used as a material for the manufacture of toe (1) and heel (2) elements. The spacer bar is made of metal. As shown in FIG. 2 the toe element (1) is equipped with a stiffener (4) located on its inner surface, and the stiffener (4) has a pressed-in metal sleeve (5) with an internal thread in the center to fix one of the ends of the spacer (3) with an applied thread ... The connection of the spacer element and the toe element is detachable. The stiffening rib is located perpendicularly or at an angle of at least 65 ° to the longitudinal plane of the toe element, depending on the type of shoe. The slope of the stiffener depends on the heel height of the shoe. The angle of inclination of the stiffener is chosen empirically.

The toe element contains a plurality of holes (6) located throughout the entire area in an arbitrary order, in any of which a convex patch (10) is installed to correct the width of the toe part of the shoe in accordance with the individual physiology of the user's foot.

The heel element (2) shown in Fig. 3 is made in the form of a hemisphere (7) with a leg (8) having an octagonal cross-section and a hole (9) designed to fix the other end of the spacer element (3). The end of the spacer (3) is fixed in the leg (8) by pressing. The octagonal shape of the leg of the heel element is convenient for adjusting the length of the spacer element using a suitable key.

FIG. 4 shows convex pads (10) of various heights, having a head (11) and a threaded rod (12). The convex pads are fixed in the holes (6) of the toe element using the fastening element (13). The fastening element can be made in the form of a wing nut.

The use of a stretcher for shoes is as follows. The heel element (2) is connected to the toe element (1) by screwing the spacer element (3) into the threaded hole of the sleeve (5) located in the stiffening rib (4) of the toe element (1). Next, the distance between the toe (1) and heel (2) elements is adjusted by moving the spacer element (3) in the longitudinal direction by turning the leg (8) of the heel element (2) counterclockwise. Having chosen the required length of the spacer element (3), the stretcher for shoes is inserted into the shoe and by turning the leg (8) clockwise, the hemisphere (7) of the heel element (2) abuts against the back of the shoe.

To adjust the width of the product in accordance with the individual physiology of the user's foot, a convex patch (10) of the required height is installed in the opening (6) of the toe element (1) and fixed with a fastening element (13) in the form of a wing nut. Next, the shoe stretcher is installed in the shoe in the manner described above.

Thus, the construction of a stretcher for shoes, containing a spacer element in the form of a cylindrical metal rod, at one end of which a thread is applied, is securely fixed in a metal sleeve with an internal thread, which is pressed into the stiffening rib of the toe element, at the same time, the second end of the spacer element pressed into the leg of the heel element. When placing a stretcher in the shoe, it is possible, without injuring the heel of the shoe, to unscrew the spacer element to the required length so that the heel element rests against the back wall of the shoe with a sufficiently applied outward pressure, and the spacer element will be fixed in this position due to a secure connection in the toe. In addition, it is possible to change the width of the product in accordance with the individual physiology of the user's foot by installing convex pads of the required height into the holes and fixing them with fasteners in the form of b wing nuts. The stretcher is easy to use because It can be easily assembled and installed in the shoe, it can be used to maintain the shape of the shoe during storage, or to stretch the front of the shoe according to the physiological characteristics of the user's foot. The shoe stretcher is reliable in operation, because all parts of the stretcher are securely connected and do not create forces destroying its structure. As a result, the technical result is achieved, which consists in increasing the efficiency of using the stretcher.

The stretcher for shoes allows you to maintain and / or change the shape of a mass-produced shoe in accordance with the individual physiology of the foot of each user, thereby providing greater comfort when wearing shoes and seasonal storage of shoes, in which the stretcher helps protect the shoes from wrinkles and deformations.

Examples of making and using a stretcher for shoes are shown in FIG. 5 and FIG. 6.

Example 1 of Making and Using a Shoe Stretcher FIG. 5.

To assemble a stretcher for shoes, designed for women's shoes of size 38 with a heel height of 30 mm, a toe element made of 2 mm thick polypropylene, perforated with holes 5 mm in diameter and having a stiffener located perpendicular to the longitudinal plane of the toe element, is taken. A hole is placed in the center of the stiffener, into which a metal sleeve with an internal thread and a diameter of 5 mm is pressed in, commensurate with the diameter of the spacer. The heel element is made of polypropylene with a thickness of 2 mm in the form of a hemisphere with a radius of 17 mm with a 30 mm long leg placed in its center. The leg of the heel element has the shape of an octahedron in cross-section with a wrench size of 16 mm and a hole inside no more than 5 mm. The spacer is made of metal, it has a straight cylindrical shape of a rod with a diameter of 5 mm, a length of 170 mm and a thread is applied from one end to the middle. One end of the unscrewed spacer is fixed in the leg of the heel element by pressing. The spacer element serves to connect the toe and heel elements and adjust the distance between them. The toe and heel element are connected by screwing the spacer rod into the hole of the sock element sleeve.

The toe element contains a plurality of holes to accommodate convex pads of various heights, having a threaded rod at one end. Convex linings in the holes are fixed with fasteners in the form of wing nuts.

Choose a pad of the required thickness from 5 mm to 20 mm, diameter no more than 25 mm, the upper part of the pad has a hemispherical convex shape. The threaded rod has an outer diameter of 3 mm and a length of 12 mm. For example, overlays are selected, the first of which is 18 mm high, and the second is 5 mm high. We place the first pad in the hole of the toe part of the stretcher opposite the big toe of the right foot, and the second pad in the hole opposite the little toe of the right foot, and fix them using fasteners in the form of wing nuts with an inner diameter commensurate with the diameter of the pad rod. With these overlays, we will adjust the toe width for the user's right foot.

Place the stretcher in the shoes for the user's right foot, turn the leg of the heel element clockwise with the appropriate key and push the hemisphere of the heel element against the heel of the shoes.

The stretcher with overlays was quickly assembled and placed in the shoes, the spacer element is securely fixed in the toe element due to the threaded connection, the heel element with sufficient force rests against the heel of the shoes, the convex pads will allow you to change the shape of the shoes in accordance with the individual physiology of the user's right foot, thereby providing greater comfort when further wearing the shoes. Thus, the technical result is achieved, namely, the effectiveness of the user of such a user-friendly design of stretchers for shoes of size 38 with a heel height of 30 mm with the possibility of changing the front part of the right of the shoes for the physiological characteristics of the user's foot.

Example 2 of Making and Using a Shoe Stretcher FIG. 6.

To assemble a stretcher for shoes designed for women's shoes of size 40 with a heel height of 100 mm, a toe element made of 2 mm thick polypropylene, perforated with holes with a diameter of 5 mm and having a stiffener located at an angle of 65 ° to the longitudinal plane of the toe element, is taken. In the center of the stiffener there is a hole into which a metal sleeve with an internal thread is pressed. When the stiffener is located at an angle of less than 65 ° to the longitudinal plane of the toe element, the stretcher for shoes cannot be installed in the shoe, the heel element will be located above the back of the shoe.

The heel element is made of polypropylene with a thickness of 2 mm in the form of a hemisphere with a radius of 17 mm with a 30 mm long leg placed in its center. The leg of the heel element has the shape of an octahedron in cross-section with a wrench size of 16 mm and a hole inside no more than 5 mm. The spacer is made of metal, it has a cylindrical straight rod shape with a diameter of 5 mm, a length of 190 mm and a thread is applied from one end to the middle. One end of the unscrewed spacer is fixed in the leg of the heel element by pressing. The spacer is used to connect the toe and heel elements and adjust the distance between them. The toe and heel element are connected by screwing the spacer rod into the hole of the sock element sleeve.

Choose a pad of the required thickness from 5 mm to 20 mm, diameter no more than 25 mm, the upper part of the pad has a hemispherical convex shape. The threaded rod has an outer diameter of 3 mm and a length of 12 mm. For example, overlays are selected, the first of which is 10 mm high, and the second is 5 mm high. Place the first pad in the toe hole of the shoe stretcher on the right foot opposite the big toe bone of the right foot, and the second pad in the toe of the shoe stretcher on the left foot in the hole opposite the big toe bone of the left foot, and fix them with fasteners in the form of wing nuts with an inner diameter commensurate with the diameter of the lining rod. With these overlays, we will adjust the toe width for the user's right and left feet.

We place the stretchers in the user's shoes, turn the legs of the heel elements using the appropriate key clockwise and push the hemispheres of the heel elements against the backs of the shoes.

Stretchers with overlays were quickly assembled and placed in the shoes, the spacers were securely fixed in the toe elements due to the threaded connection, the heel elements abut against the shoe heels with sufficient force, the convex overlays will allow you to change the shape of the shoes in accordance with the individual physiology of the user's feet, thereby ensuring greater comfort when further wearing shoes. Thus, the technical the result, namely, the effectiveness of the user of such a user-friendly design of stretchers for shoes of size 40 with a heel height of 100 mm with the possibility of changing the forepart of the shoes to the physiological characteristics of the user's feet.

Claims

Claim

1. Stretcher for shoes, containing a toe element corresponding to the shape of the front part of a shoe, a heel element and a length adjuster in the form of a spacer element connecting the toe and heel elements and regulating the distance between them, while the toe element is provided with a stiffener located on its inner surface, characterized in that the stiffener contains in the center a pressed-in sleeve with an internal thread, the spacer is made in the form of a straight cylindrical rod with a screw thread at one end for fixing it in the stiffener, the heel element is made in the form of a hemisphere with a leg placed in it center and fixing the other end of the spacer element, the toe element contains a plurality of holes for receiving the convex pads.

2. Stretcher for shoes according to claim 1, characterized in that the screw thread of the spacer is applied to its middle.

3. Stretcher for shoes according to claim 1, characterized in that the spacer is made of metal.

4. Stretcher for shoes according to claim 1, characterized in that the stiffening rib is located perpendicular to the longitudinal plane of the toe element.

5. Stretcher for shoes according to claim 1, characterized in that the stiffening rib is located at an angle of at least 65 ° to the longitudinal plane of the toe element.

6. Stretcher for shoes according to claim 1, characterized in that the bushing in the stiffener is made of metal.

7. Stretcher for shoes according to claim 1, characterized in that the leg of the heel element has an octagonal cross-section.

8. Stretcher for shoes according to claims 1, 8, characterized in that it contains convex pads of various heights, having a threaded rod at one end, for the possibility of fixing in the holes of the sock element by means of fasteners.

9. Stretcher for shoes according to claims 1, 8, 9, characterized in that the fastening element is made in the form of a wing nut.

IB