WO2022021548A1

WO2022021548A1 - Foot mold shaping-free thermoplastic customized insole

Info

Publication number: WO2022021548A1
Application number: PCT/CN2020/114465
Authority: WO
Inventors: 龙汝倩; 张宇洋; 蔡李同兴; 黄成�
Original assignee: 重庆小爱科技有限公司
Priority date: 2020-07-27
Filing date: 2020-09-10
Publication date: 2022-02-03
Also published as: CN212911962U

Abstract

A foot mold shaping-free thermoplastic customized insole, comprising a cushioning and shock absorbing layer (2) and a bottom fabric layer (3) located under the cushioning and shock absorbing layer (2). The cushioning and shock absorbing layer (2) and the bottom fabric layer (3) arch upwards at positions corresponding to a human arch area to form a human arch support arched part (6); a thermoplastic layer (4) is sandwiched between the cushioning and shock absorbing layer (2) and the bottom fabric layer (3); the position of the thermoplastic layer (4) corresponds to the human arch area; and the arch shape of the thermoplastic layer (4) before the thermoplastic layer (4) is heated and softened for customized molding causes the height of the human arch support arched part (6) to be higher than the height of the human arch at the corresponding position. A foot mold support is not needed any more during heat setting of the insole.

Description

A thermoplastic custom insole that can be molded without foot

technical field

The utility model relates to the technical field of insole, in particular to a thermoplastic customized insole which can be molded without foot.

Background technique

According to the survey results of the domestic health organization, almost more than 50% of adults suffer from different types of foot diseases, and the older the age, the higher the proportion; The various social impacts brought by it have become a problem that cannot be ignored.

The human foot is a highly evolved product whose structure is adapted to walk barefoot on a variety of complex terrains. After human beings enter modern urbanization, pavement is used a lot, and some modern fashions require us to wear shoes that are not ergonomic, resulting in uneven distribution of pressure on the soles of the feet, and different degrees of damage to bones, ligaments, and muscles.

Shoes are the most important tool to protect our feet, which can protect the injury from external forces and cushion the impact of the ground on the feet. However, the manufacturing process of the shoes (the production of the last, the requirements for shaping, the material of the midsole) determines that the shoes cannot completely conform to the shape of the soles of our feet; therefore, the shoes we wear are actually another kind of artificial that does not conform to the human body. Engineering devices, used for a long time, still cannot avoid various discomforts in our feet; in this case, the insole can just supplement the missing function of the shoes.

Custom insoles are insoles that are custom-made according to the shape of a person's foot. Everyone has a unique foot gait, wide, narrow, fat and thin, high and low arches, long and short legs, eversion and varus, which leads to different foot pressure distribution for each person. Customized insoles can be customized according to each person's feet. It can improve the distribution of pressure on the sole of the foot, adjust the fatigue of muscles and ligaments, and thus play a role in protecting the foot.

At present, there are many customized insoles on the market. The applicant has also invented a customized insole before. The customized insole includes a surface layer and a thermoplastic layer. The thermoplastic layer is made of low-temperature thermoplastic material. Since the adhesive is arranged on the upper surface of the thermoplastic layer, when in use, the customized insole is heated, and then the customized insole is placed on a special foot mold support, and the user's foot steps on the surface layer, so that The thermoplastic layer deforms under the action of foot pressure and fits with the user's foot. After the thermoplastic layer is cooled, an insole suitable for the human body's foot can be obtained. However, this customized insole has the following problems in the actual use process: the customized insole has a flat structure as a whole before heating and setting, so that the customized insole needs to be placed on a special foot during heating and setting. In this way, during the heating and setting, the customized insole is deformed and adapted to the shape of the human foot by using the foot mold support, so that the user needs to have the foot mold support after purchasing the customized insole. Thermoplasticization of the insole is carried out at the point of sale of the customized insole of the piece, and the user cannot complete the heating and molding of the customized insole by himself, thereby greatly reducing the effect of the customized insole for promotion and use.

Utility model content

In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is: how to provide a thermoplastic customized insole that can be molded without foot molding, so as to solve the problem that the current customized insole needs to be placed in a special foot mold when it is heated and shaped. Problems with the supports.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A thermoplastic custom-made insole that can be molded without foot, comprising a cushioning and shock-absorbing layer and a bottom fabric layer under the cushioning and shock-absorbing layer, the cushioning and shock-absorbing layer and the bottom fabric layer are used for connecting with the arch of a human foot The position corresponding to the area is arched upward to form the arch supporting arch, a thermoplastic layer is sandwiched between the buffering and shock absorption layer and the bottom fabric layer, and the position of the thermoplastic layer is the same as that of the arch area of the human body. Correspondingly, the arched shape of the thermoplastic layer before being softened and customized by heat makes the height of the arch supporting arch portion higher than the height of the human arch at the corresponding position.

In this way, when the customized insole is in use, it is first heated to soften the thermoplastic layer, and then the heated insole is placed on the ground or in the shoe with the bottom fabric layer facing down, and then the user's foot steps on the insole, The thermoplastic layer is deformed under the action of foot pressure and fits with the user's foot, and after the thermoplastic layer is cooled, an insole suitable for the foot of the human body can be obtained. In the insole of this solution, the height of the arch of the foot arch corresponding to the position of the human foot arch is higher than the height of the human foot arch at the corresponding position before heating and setting, so that when the user's foot steps on the foot during the heating setting Before applying force on the insole, the user's foot arch will be in contact with the arch support arch. At this time, the user's foot is pressed down again, and the thermoplastic layer is deformed and further makes the arch support arch The shape of the foot arch is adapted to the shape of the user's foot arch. Therefore, in this solution, the arch support arch is pre-processed at the corresponding position of the insole and the human foot arch, and the height of the arch support arch is designed to be higher than that of the human body. The height of the foot arch, on the one hand, makes the insole no longer need to use a foot mold support when heating and shaping, greatly improving the promotion and use effect of the insole; The height difference is used to ensure the deformation effect of the thermoplastic layer, thereby ensuring the matching effect of the arch support arch portion and the human foot arch.

Preferably, the upward arched height of the arch support arch portion is 28-32 mm.

Preferably, the arch-supporting arched portion has an arched shape that rises first, then gently extends forward, and finally descends from the direction close to the heel to the direction close to the forefoot.

In this way, by designing the arched portion of the arch support to be an arched shape that first rises, then extends forward gently, and then descends, so that during heating and shaping, the position of the arch of the human body will be in surface contact with the gentle extension in the middle. Enlarging the contact area between the two can disperse the force acting on the position of the arch of the foot of the human body when the position of the arch of the foot is pressed down, and reduce the discomfort of the position of the arch of the foot of the human body.

Preferably, the thermoplastic layer extends forward to a position corresponding to the middle of the metatarsal bone of the human body.

In this way, when the user is playing basketball and other sports, the front end of the metatarsal bone of the user and the former position (and the position of the forefoot area) have a greater activity intensity, and the thermoplastic layer is in a relatively hard state after cooling, so If the thermoplastic layer is extended forward to the position before the middle of the human metatarsal, the front edge of the hard thermoplastic layer will not only easily cause a diaphragm feeling when the user steps on the forefoot area, affecting the wearing comfort, but also easily cause the user to Fatigue or injury pain at the position of the forefoot area has a negative impact on wearing comfort; therefore, the thermoplastic layer is arranged to extend forward to a position corresponding to the middle of the human metatarsal, due to the support of the forefoot area when the human foot is stepping on Relying on the front of the metatarsal and the former phalanges, and the middle of the metatarsal corresponds to the beginning of the arch of the foot, so that the front edge of the thermoplastic layer avoids the position of the user's forefoot stepping area, avoiding the disadvantage of wearing comfort in the forefoot area Influence.

Preferably, the thermoplastic layer extends backward beyond the position corresponding to the heel of the human body, and has a heel surrounding bulge at the position corresponding to the sides and the rear region of the heel of the human body, so as to be suitable for the foot of the human body. Forms semi-enclosed supports on the sides and rear area.

In this way, the thermoplastic layer extends backward and forms a heel surrounding ridge on both sides and the rear of the heel of the human body, and the thermoplastic layer can be customized by the hardness and support of the heel surrounding ridge at room temperature. The insole has sufficient support strength for both sides of the heel and the rear area, and can play a good semi-enclosed support role on the sides and rear area of the heel when the human body is exercising, so that the force of the heel area can be reduced. Dispersion helps reduce the fatigue of the force in the heel area; and the heel-encircling bulge of the thermoplastic layer forms a semi-enclosed "heel cup" area for the sides and rear areas of the heel, which can be used during wearing sports. It can also make the rear root of the insole fit better with the heel area of the human body, which is beneficial to better prevent the human heel from slipping out of the "heel cup" area of the rear root of the insole and causing sprains and the like.

Preferably, it also includes a buffer pad, the thermoplastic layer is further provided with an arrangement hole at a position corresponding to the middle of the heel of the human body, the buffer pad is installed at the arrangement hole and is fixedly fitted with the buffer and shock absorbing layer at the corresponding position .

In this way, by arranging a buffer pad and attaching and fixing the buffer pad and the buffering shock-absorbing layer, the force on the heel can be further transmitted to the buffering pad for buffering after passing through the buffering and shock-absorbing layer, thereby reducing the foot movement of the human body when exercising. The force received by the heel improves the wearing comfort of the insole.

Preferably, the outer contour size of the buffer pad is larger than the outer contour size of the arrangement hole, so that the peripheral edge area of the buffer pad overlaps the thermoplastic layer at the corresponding position on the peripheral side of the arrangement hole, and all the The peripheral edge region of the buffer pad is attached and fixed to the position on the thermoplastic layer on the peripheral side of the arrangement hole.

In this way, the peripheral edge area of the buffer pad is overlapped on the thermoplastic layer at the corresponding position on the peripheral side of the hole, and it has been fixed by bonding or the like, so that the buffer pad is not easy to slip off. Since the peripheral edge area of the cushion pad is fixedly connected with the thermoplastic layer, the position of the cushion pad remains unchanged, thereby avoiding the position change of the cushion pad after wearing for a period of time, thereby reducing the use effect of the cushion pad. problem.

Preferably, a position corresponding to the arrangement hole on the bottom fabric layer is further provided with an installation hole adapted to the size and shape of the arrangement hole; the upper surface of the buffer pad is attached to the buffer and shock absorbing layer at the corresponding position The peripheral edge area of the lower surface of the buffer pad is fitted and fixed to the position where the upper surface of the thermoplastic layer is located on the peripheral side of the arrangement hole, and the middle area of the lower surface of the buffer pad is exposed from the arrangement hole and the installation hole .

In this way, the mounting holes are also started on the bottom fabric layer, and the position of the cushion pad is released by setting the mounting holes, so that the force on the heel can be better transmitted after the force on the heel is transmitted to the cushion pad through the cushioning and shock-absorbing layer. out for better cushioning.

Preferably, the cross-sectional thickness of the thermoplastic layer corresponding to the inside of the foot in the arch area of the human body is smaller than the cross-sectional thickness of the thermoplastic layer corresponding to the outside of the foot in the arch area of the human body.

In this way, since some users have the situation that the outer side of the foot is low, if the overall thickness of the thermoplastic layer is designed to be consistent, when such users are heating and setting, the outer side of the user's foot acts on the thermoplastic layer to make it basically Flattened, the thermoplastic layer on the inside of the foot will also be flattened with the thermoplastic layer on the outside of the foot, so that the thermoplastic layer area will not be well adapted to the shape of the user's arch; The thickness of the layer corresponding to the inner side of the foot arch area of the human body is designed to be smaller than the section thickness of the thermoplastic layer corresponding to the outer side of the foot area of the human foot arch area. Under the same heating conditions, the thickness of the thermoplastic layer area corresponding to the outer side of the foot is larger Therefore, the deformation amount of the thermoplastic layer at this position is correspondingly smaller than that of the thermoplastic layer on the inner side of the foot, so that when the user with a lower foot outer side heats and sets the insole, the area of the thermoplastic layer is relatively small. It can also be well adapted to the shape of the arch of the foot of the user, thereby improving the shaping effect of the insole.

Preferably, the bottom fabric layer is made of cloth or leather material.

In this way, the bottom fabric layer can be selected from fabric or leather material according to specific use occasions, so as to improve the use occasion and use effect of the insole.

Description of drawings

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be described in further detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of the thermoplastic custom-made insole of the present invention which can be free from foot molding;

Fig. 2 is the rear view of the thermoplastic custom-made insole of the present invention which can be molded without foot;

Fig. 3 is the rear view of the thermoplastic custom-made insole of the present invention after removing the bottom fabric layer;

FIG. 4 is a cross-sectional view of A-A in FIG. 3 .

Description of reference numerals: surface layer 1 , cushioning and shock absorption layer 2 , bottom fabric layer 3 , thermoplastic layer 4 , heel surrounding raised portion 41 , cushion pad 5 , arch support arch portion 6 .

detailed description

The present utility model will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 4 , the thermoplastic custom-made insole that can be molded without foot, includes a cushioning and shock-absorbing layer 2 and a bottom fabric layer 3 located under the cushioning and shock-absorbing layer 2 . The cushioning and shock-absorbing layer 2 and The bottom fabric layer 3 is used for the position corresponding to the arch area of the human body to be arched upward to form the arch support arch 6, and a thermoplastic layer 4 is sandwiched between the cushioning and shock absorption layer 2 and the bottom fabric layer 3. The thermoplastic layer The position of 4 corresponds to the arch area of the human body, and the arched shape of the thermoplastic layer 4 before being softened and customized by heat makes the height of the arch support arch 6 higher than the height of the human arch at the corresponding position. A surface layer 1 may also be arranged above the seismic layer 2 .

In this way, when the customized insole is in use, it is first heated to soften the thermoplastic layer 4, and then the bottom fabric layer 3 is turned downward to place the heated insole on the ground or in the shoe, and then the user's foot steps on the insole Then, the thermoplastic layer 4 is deformed under the action of foot pressure and fits with the user's foot. After the thermoplastic layer 4 is cooled, an insole suitable for the human foot can be obtained. In the insole of this solution, the height of the arch supporting arch 6 corresponding to the position of the human foot arch is higher than the height of the human foot arch at the corresponding position before the heating and setting, so that the user's foot steps on the foot during the heating and setting. Before applying force on the insole, the position of the user's foot arch will be in contact with the arch support arch 6 , at this time the user's foot is pressed down again, the thermoplastic layer 4 is deformed and further supports the foot arch The shape of the arched portion 6 is adapted to the shape of the user's arch position. Therefore, in this solution, the arch support arched portion 6 is pre-processed at the position corresponding to the insole and the human foot arch, and the arch support arched portion 6 is formed. The height is designed to be higher than the height of the human foot arch, so that on the one hand, the insole no longer needs to use a foot mold support during heating and shaping, which greatly improves the promotion and use effect of the insole; on the other hand, the arch is used to support the arch The height difference between the foot arch portion 6 and the human foot arch is used to ensure the deformation effect of the thermoplastic layer 4 to ensure the matching effect of the foot arch support arch portion 6 and the human foot arch.

In this embodiment, the upward arched height of the arch support arched portion 6 is 28-32 mm.

In the present embodiment, the arch supporting arch portion 6 is in the shape of an arch that rises first, then gently extends forward, and finally descends from the direction close to the heel to the direction close to the forefoot.

In this way, by designing the arch support arch portion 6 into an arched shape that first rises, then extends forward gently, and then descends, so that during heating and shaping, the position of the human foot arch will be in surface contact with the gently extending portion in the middle. By increasing the contact area between the two, the force acting on the position of the arch of the foot of the human body can be dispersed when the position of the arch of the foot is pressed down, thereby reducing the discomfort of the position of the arch of the foot of the human body.

In this embodiment, the thermoplastic layer 4 extends forward to a position corresponding to the middle of the metatarsal bone of the human body.

Preferably, the thermoplastic layer 4 extends backward beyond the position corresponding to the heel of the human body, and has heel surrounding bulges 41 at the positions corresponding to both sides and the rear region of the heel of the human body, so as to provide the support for the foot of the human body. Forms semi-enclosed supports on the sides and rear area.

In this way, the thermoplastic layer extends backwards and forms the heel surrounding ridges 41 on both sides and the rear of the heel of the human body, and the hardness and support of the heel surrounding ridges 41 of the thermoplastic layer at room temperature make the heat The plastic custom-made insole has sufficient support strength on both sides of the heel and the rear area, which can play a good semi-enclosed support role on the sides and rear area of the heel when the human body is exercising, so that the force of the heel area is It can be dispersed, which helps to reduce the fatigue feeling of the force in the heel area; and, the heel surrounding bulge 41 of the thermoplastic layer forms a "heel cup" area that half surrounds and supports the sides and rear areas of the heel, When wearing sports, it can also make the back root of the insole fit better with the heel area of the human body, which is beneficial to better prevent the human heel from slipping out of the "heel cup" area of the back root of the insole and causing sprains and other situations.

In this embodiment, a buffer pad 5 is also included. The thermoplastic layer 4 is further provided with an arrangement hole at a position corresponding to the middle of the heel of the human body. fixed.

In this way, by arranging the buffer pad 5 and attaching and fixing the buffer pad 5 and the buffering shock-absorbing layer 2, the force on the heel can be further transmitted to the buffering pad 5 for buffering after passing through the buffering and shock-absorbing layer 2. The force on the heel portion of the human body is reduced when the human body is exercising, and the wearing comfort of the insole is improved.

In this embodiment, the outer contour size of the buffer pad 5 is larger than that of the arrangement hole, so that the peripheral edge area of the buffer pad 5 overlaps the thermoplastic layer 4 at the corresponding position on the peripheral side of the arrangement hole, and the buffer pad 5 The peripheral edge area of the thermoplastic layer 4 is attached and fixedly connected to the position on the peripheral side of the arrangement hole on the thermoplastic layer 4 .

In this way, the peripheral edge area of the buffer pad 5 is overlapped on the thermoplastic layer 4 at the corresponding position on the peripheral side of the arrangement hole, and can be fixed by means of bonding, etc., so that the buffer pad 5 is not easy to slip off, and when there is a sag, etc. In this case, since the peripheral edge areas of the cushion pad 5 are all fixedly connected with the thermoplastic layer 4, the position of the cushion pad 5 remains unchanged, thereby avoiding the change of the position of the cushion pad 5 after wearing for a period of time, thereby reducing the The problem of the use effect of the buffer pad 5 is solved.

In this embodiment, the positions corresponding to the arrangement holes on the bottom fabric layer 3 are also provided with installation holes adapted to the size and shape of the arrangement holes; the upper surface of the buffer pad 5 is fitted and fixed with the buffer and shock absorption layer 2 at the corresponding position. , the peripheral edge area of the lower surface of the buffer pad 5 is attached and fixed to the position where the upper surface of the thermoplastic layer 4 is located on the peripheral side of the arrangement hole, and the middle area of the lower surface of the buffer pad 5 is exposed from the arrangement hole and the installation hole.

In this embodiment, the cross-sectional thickness of the thermoplastic layer 4 corresponding to the inner side of the foot in the arch area of the human body is smaller than the cross-sectional thickness of the thermoplastic layer 4 corresponding to the outer side of the foot in the arch area of the human body.

In this way, due to the fact that the outer side of the foot is low for some users, if the overall thickness of the thermoplastic layer 4 is designed to be consistent, when such users are heating and setting, the outer side of the user's foot acts on the thermoplastic layer 4 to make the It is basically flattened, and the thermoplastic layer 4 on the inner side of the foot will also be flattened together with the thermoplastic layer 4 on the outer side of the foot, so that the area of the thermoplastic layer 4 will not be well adapted to the shape of the user's foot arch. By designing the cross-sectional thickness of the thermoplastic layer 4 corresponding to the inside of the foot in the arch area of the human body to be smaller than the cross-sectional thickness of the thermoplastic layer 4 corresponding to the outside of the foot in the arch area of the human body, under the same heating conditions, due to the thickness corresponding to the outside of the foot. The thickness of the thermoplastic layer 4 is relatively thick, so the deformation amount of the thermoplastic layer 4 at this position is correspondingly smaller than that of the thermoplastic layer 4 on the inner side of the foot, so that the user with a lower foot outer side is in this position. When the insole is heated and shaped, the area of the thermoplastic layer 4 can also be well adapted to the shape of the user's foot arch, which improves the shaping effect of the insole.

In this embodiment, the bottom fabric layer 3 is made of cloth or leather material.

In this way, the bottom fabric layer 3 can be selected from fabric or leather material according to the specific use occasion, so as to improve the use occasion and use effect of the insole.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be The scheme is modified or equivalently replaced without departing from the purpose and scope of the technical scheme of the present invention, and it should be included in the scope of the claims of the present invention.

Claims

A thermoplastic customized insole capable of free foot molding, comprising a cushioning and shock-absorbing layer and a bottom material layer under the cushioning and shock-absorbing layer, the cushioning and shock-absorbing layer and the bottom material layer are used for contacting a human body. The position corresponding to the arch area is arched upward to form the arch support arch, and it is characterized in that a thermoplastic layer is sandwiched between the buffering and shock absorption layer and the bottom fabric layer, and the position of the thermoplastic layer is Corresponding to the arch area of the human body, and the arched shape of the thermoplastic layer before being softened and customized by heat makes the height of the arch supporting arch portion higher than the height of the human arch at the corresponding position.
The thermoplastic custom-made insole capable of free foot molding according to claim 1, wherein the upward arched height of the arch support arch portion is 28-32 mm.
The thermoplastic custom-made insole free from foot molding according to claim 1, wherein the arch support arch portion rises first and then forwards as a whole from the direction close to the heel to the direction close to the forefoot. An arched shape that extends gently and descends at the end.
The thermoplastic customized insole capable of free foot molding according to claim 1, wherein the thermoplastic layer extends forward to a position corresponding to the middle of the metatarsal bone of the human body.
The thermoplastic custom-made insole capable of free foot molding according to claim 1, wherein the thermoplastic layer extends rearward beyond the position corresponding to the heel of the human body, and is in the position corresponding to the heel of the human body. The positions of the two sides and the rear area of the heel are provided with a heel surrounding bulge, which is used to form a semi-enclosed support for the two sides and the rear area of the human heel.
The thermoplastic customized insole capable of free foot molding according to claim 5, further comprising a buffer pad, the thermoplastic layer is further provided with an arrangement hole at a position corresponding to the middle of the heel of the human body, and the The buffer pads are installed at the arrangement holes, and are fitted and fixed with the buffering and shock absorbing layers at the corresponding positions.
The thermoplastic customized insole capable of free foot molding according to claim 6, wherein the outer contour size of the cushion pad is larger than that of the arrangement hole, so that the peripheral side of the cushion pad is larger than the outer contour size of the arrangement hole. The edge region overlaps on the thermoplastic layer at the corresponding position on the peripheral side of the arrangement hole, and the peripheral edge region of the buffer pad is attached and fixedly connected to the position on the thermoplastic layer on the peripheral side of the arrangement hole.
The thermoplastic custom-made insole capable of free foot molding according to claim 7, wherein a position corresponding to the arrangement hole on the bottom fabric layer is further provided with a size and shape of the arrangement hole. Adaptable mounting holes; the upper surface of the buffer pad is attached and fixed to the buffering and shock-absorbing layer at the corresponding position, and the peripheral edge area of the lower surface of the buffer pad is attached and fixed to the position where the upper surface of the thermoplastic layer is located on the peripheral side of the arrangement hole , and the middle area of the lower surface of the buffer pad is exposed from the arrangement hole and the installation hole.
The thermoplastic customized insole capable of free foot molding according to claim 1, wherein the cross-sectional thickness of the thermoplastic layer corresponding to the inner side of the foot in the arch area of the human body is smaller than that of the thermoplastic layer corresponding to the human foot. The thickness of the section on the outside of the foot in the arch area.
The thermoplastic custom-made insole capable of free foot molding according to claim 1, wherein the bottom material layer is made of cloth or leather material.