JP2012235892A - Insole of shoe having heel and shoe using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insole of a shoe having a heel absorbing a shock even when receiving the shock from the ground at a narrow heel in the shoe having the heel.SOLUTION: In this insole 3 of a shoe 1 having a heel 2, a rear front surface layer 6 from a rear end 4b of a heel part 4 to a front end 5a of an arch part 5 of an insole 3 having a size from a tiptoe part 7 of the shoe 1 to the rear end 4b of the heel part 4 is formed from a hard board 8. A shank 9 is provided so as to be fixed to a longitudinal central part 6a of a back surface of the hard board 8. A head through-hole 12 allowing a head part 11a of a heel nail 11 to freely pass therethrough is provided at the hard board 8 above the rear part 9b of the shank 9, and an insole rear part upper surface material 14 and an elastic plastic foam intermediate layer 15 are pasted. A cardboard core material 16 having the size of the insole 3 is pasted on a back surface of the plastic foam intermediate layer 15. Further, a lower part hard board 8b having the same material as the upper part hard board 8a of the rear surface layer 6 of the heel part 4 is pasted on the back surface of the cardboard core material 16 backward from the front end 5a of the arch part 5 so as to be integrated.

Description

  The present invention relates to an insole for women's shoes having a heel on the outsole of the sole of the heel of the shoe, and more particularly to an insole for women's shoes having a heel in a pump, a slingback, a boot or the like.

  In general, in a shoe having a high heel, that is, a shoe having a heel, a steel shank piece (hereinafter referred to as a shank piece) is used as a reinforcement between the outsole and the insole and in a portion corresponding to the arch portion as a reinforcement. It is called “shank”). Shoes that support an upright human walk are subject to very heavy loads. Therefore, in order to prevent the heel from wobbling when a load is applied by separating the toe-side outsole in contact with the ground and the small heel on the installation surface, the outsole and midsole at the position of the arch are not used in general shoes. The structure is reinforced by inserting a highly elastic steel or plastic resin material as a shank. In particular, in women's high heel shoes, the shank is generally made of steel in view of the load.

  Certainly, when the wick of the shank is inserted, the sole of the arch in front of the heel does not bend and the foot tilt is improved. However, if the heel height is 3 cm or higher, and the middle heel or high heel is not sufficient, the foot will not be able to lift when walking, so extra thigh and buttocks muscles will be used for walking. It has been pointed out that the shoe shape is not suitable for walking (see Non-Patent Document 1).

  By the way, general women's shoes, for example, as exemplified in Japanese Industrial Standards JIS S5050, cement-type manufacturing method (C-type manufacturing method. Bonding the upper (upper)) and the bottom of the bottom. It is manufactured by a method of applying an adhesive around the upper part and the outer periphery of the upper part and then bottoming it with a crimping machine) (see Non-Patent Document 2 and FIG. 5).

  In this case, since the heel neck is required to have enough strength to withstand loads concentrated on the thin neck of the high heel, it is inevitably a hard and strong material such as a hard plastic resin. Therefore, the heel neck itself is a material that is poor in stretchability and shock absorbing properties in response to impact and vibration. Further, the heel neck is firmly and firmly fixed to the heel from the top of the midsole with a heel nail such as a heel fixing screw nail or a heel fixing spiral nail. Therefore, it was not expected or expected that the heel neck itself would expand and contract with elasticity.

  Further, in order to protect the heel, a member made of leather, rubber, or synthetic resin is generally attached to the ground contact surface of the heel as a top lift (decoration) as a countermeasure against wear or slip. Since this top lift is also subjected to a large load, it is necessary to firmly fix it to the heel neck. For this purpose, for example, a metal pin is provided on the back surface of the top lift so as to protrude toward the heel neck, and the pin is inserted into a prepared hole formed on the heel neck side. In other words, a method is employed in which the shaft is firmly fixed as a shaft core.

  In this way, the heel is a very strong material, and it is firmly fixed with nails and pins from the top lift side (lower surface side) and the midsole side (upper surface side) of the ground contact surface. It is common. Therefore, the hardness of the heel neck itself, combined with the hardness of the material and the internal nails and pins, makes it very hard and low in elasticity, making it difficult to provide a comfortable cushioning property. It was.

  Since it does not have such a cushioning property, during walking, the impact and vibration received when the tip of the heel of the high heel contacts the ground is directly transmitted from the insole to the back of the heel of the pedestrian. The human foot absorbs vibrations at the arched arch, but it feels as if the impact transmitted directly to the heel is transmitted to the brain as it is, so it is very unpleasant comfort Therefore, it was difficult to be suitable for long-time walking. Also, because it is a hard heel with poor cushioning, if you wear women's shoes with tapered pin heels and walk on places with bad irregularities such as stone pavement or gravel, you will be at the tip of the heel when the shoe sole touches the ground. A certain top lift slipped on the uneven surface, making it difficult to hold the posture, and it was easy for the feet to wobble and knead. Also, when stepping on the front of the front part of the arch, which is the part with the front storm, on the pebbles with a diameter of around 1.5cm, the outsole on the pebbles is not balanced and the soles wobble It is a danger.

  Therefore, in order to reduce vibrations and impacts transmitted from these feet and to provide a more comfortable walking environment, the present inventors have invented shoes with air cushions on the soles of shoes of wedge soles. This is an invention related to a device in which air cushion parts generally called air soles, which are integrally formed by combining hollow pipes made of soft plastic in a lattice shape inside a heel of a shoe sole of a wedge sole made of polyurethane rubber, are arranged in a plurality of stages. Has proposed. This air cushion part is inclined at each stage so that the front side is low and the heel side is high, and the length of each stage in the front-rear direction is increased from the upper stage to the lower stage. It is characterized in that the air cushions of the heels are shortened and inclined so as to be parallel to the inclined bottom surface of the heel part, and their rear ends are aligned. (See Patent Document 1).

  With these contrivances, it is possible to receive a load on the heel of the sole of the foot worn in a state that matches the shape that the upper side of the heel of the air cushion part is long in the front and back and the lower side is short in the front and back, so the heel There is provided a wedge sole shoe that can distribute the load applied to the entire foot evenly and is suitable for a long time.

  Certainly, if it is a ship bottom type shoe sole such as a wedge sole, it can be said that such a device can suitably give the shoe sole a cushioning property. Of course, these contrivances are clear from the development process that the sole shape of the sole of the wedge sole itself was originally designed to eliminate the need for a shank. It can be said that the effect of. In the case of a wedge sole, since the arch part is held integrally with the toe side, there is no necessity to hold the heel part firmly with a hard material, so it is inside the heel part for shock absorption This is because it can be said that there is much room for contrivance such as air placement.

  However, in shoes having a heel such as a medium heel and a high heel, there are many restrictions on the material of the heel neck due to the strength of the heel portion, and these materials are poor in stretchability, cushioning, shock absorption and elasticity. Therefore, despite the desire to provide a heel part with better shock absorption and better cushioning than a wedge sole, it is extremely strong because of the need to support the load with a thin heel cross-section. The structure is such that the heel conveys the impact directly to the sole. For example, if a device to insert air into a thin heel neck such as a high heel is arranged, the thickness of the heel neck is not sufficient to secure safety strength, and in fact secure safety strength. Was difficult.

JP 2010-148790 A

“World Encyclopedia Second Edition”, Heibonsha (“Shoes”) Japanese Industrial Standard JIS S5050 “Leather Shoes”

  The problem to be solved by the present invention is a heel neck which is limited in that it is a shoe having a heel such as a medium heel or a high heel for women, but lacks elasticity, shock absorption, shock absorption and elasticity as described above. By improving the structure of the top and bottom insole parts of the heel part, the impact from the ground that is transmitted from the top lift of the thin heel neck, while being a thin heel neck, To provide a shoe having a heel such as a mid-heel or a high heel having a mid-sole having a structure in which it is difficult to transmit a strong impact from the heel portion to the brain of the body by absorbing the It is.

  The means of the present invention for solving the above-mentioned problems is the means in the insole 3 having a size from the toe portion 7 of the shoe 1 having the heel 2 to the rear end 4b of the heel portion 4 in the means of claim 1. It is. The rear surface layer 6 from the rear end 4b of the heel portion 4 of the insole 3 to the front end 5a of the arch portion 5 is formed from a hard board 8 made of pulp board or leather board, and the heel portion 4 of the rear surface layer 6 is formed. A steel shank 9 is arranged in the longitudinal central portion 6a of the back surface of the upper hard board 8a, which is a portion of the rear surface layer 6 from the center 4a to the center 5b of the arch portion 5, and the front portion 9a and the rear portion of the shank 9 are arranged. 9b is fixed to the back surface of the upper hard board 8a with a rivet or eyelet 10. Further, a head through-hole 12 through which the head 11a of the heel nail 11 can freely pass is opened in the upper hard board 8a which is the rear surface layer 6 located on the rear part 9b of the shank 9, and the upper hard board is further opened. A shaft insertion hole 13 through which only the shaft 11b of the heel nail 11 can be freely inserted into the shank on the lower surface of the head through hole 12 of the heel nail 8a is opened concentrically with the head through hole 12. The rear bottom surface top material 14 is formed from the hard board 8 of the rear surface layer 6 having the rear shank 9 on the back surface, and the rear portion of the heel portion 4 from the rear portion of the front rivet or eyelet 10 included in the bottom bottom surface top surface material 14. An elastic plastic foam intermediate layer 15 is affixed to the end 4 b, and a cardboard core material 16 having a size of the insole 3 is attached to the back surface of the plastic foam intermediate layer 15 and the front end 5 a of the arch portion 5. The remaining cardboard core material 16 is pasted on the part up to the rear end 4b of the heel part 4 so as to be the part from the front part of the arch part 3 of the insole 3 to the toe part 7, and further from the front end 5a of the arch part 5 The heel 2 is characterized in that a lower hard board 8b of the same material as the upper hard board 8a of the rear surface layer 6 of the heel part 4 is attached to the back surface of the rear cardboard core 16 and laminated integrally. An insole 3 of the shoe 1.

  The means of claim 2 is the means at the insole 3 having a size from the toe portion 7 to the rear end 4b of the heel portion 4 of the shoe 1 having the heel 2 as in the means of claim 1. The rear surface layer 6 from the rear end 4b of the heel portion 4 of the insole 3 to the front end 5a of the arch portion 5 is formed from a hard board 8 made of pulp board or leather board, and the heel portion 4 of the rear surface layer 6 is formed. A steel shank 9 is disposed in the longitudinal central portion 6a on the back surface of the upper hard board 8a from the center 4a to the center 5b of the arch portion 5, and the front portion 9a and the rear portion 9b of the shank 9 are rigid with rivets or eyelets 10. It adheres to the back surface of the board 8. Further, a head through hole 12 through which the head 11a of the heel nail 11 can freely pass is opened in the upper hard board 8a which is the rear surface layer 6 located on the rear part 9b of the shank 9, and the hard board 8 is further opened. A shaft insertion hole 13 through which only the shaft 11b of the heel nail 11 can be freely inserted into the shank 9 on the lower surface of the head through-hole 12 of the heel nail 11 is opened concentrically with the head through-hole 12. A mid-bottom rear upper surface material 14 is formed from the hard board 8 of the rear surface layer 6 having the shank 9 on the back surface, and a cardboard core material 16 having a size of the mid-sole 3 is formed on the front portion of the mid-bottom rear upper surface material 14. Is attached to the part from the front end 5a of the arch part 5 to the rear end 4b of the heel part 4 so that the remaining cardboard core 16 is a part from the front part of the arch part 3 of the midsole 3 to the toe part 7, The back of the arch part 5 from the front end 5a An elastic plastic foam intermediate layer 15 is affixed to the back surface of the paper core 16, and the heel is attached to the back of the cardboard core 16 and the elastic plastic foam intermediate layer 15 behind the front end 5a of the arch portion 5. This is an insole 3 of a shoe 1 having a heel 2 in which a lower hard board 8b of the same material as that of the upper hard board 8a of the rear surface layer 6 of the part 4 is attached and laminated integrally.

  In the means of claim 3, the cardboard core material 16 having the size of the insole 3 has a flexible plastic foam front surface layer 17 formed on the upper part of the part from the arch part 5 to the toe part 7, 3. The heel 2 according to claim 1, wherein the rear end of the flexible plastic foam front surface layer 17 is connected to the front end 5a of the arch portion 5 of the upper hard board 8a of the rear surface layer 6. The insole 3 of the shoe 1 having

  According to the fourth aspect of the present invention, the flexible plastic foam front surface layer 17 is formed on the toe portion 7 of the front end portion 17a on the upper portion of the arch portion 5 to the toe portion 7 on the cardboard core member 16. 4. The insole 3 of the shoe 1 having the heel 2 according to claim 3, characterized in that a front end hard board 8c, which is the same material as the upper hard board 8a of the rear surface layer 6, is formed.

  The difference between the means of claim 1 and the means of claim 2 is that the means of claim 1 is a heel on the rear side from the front part of the arch part 5 under the cardboard core member 16 having the size of the insole 3. Whereas the plastic foam intermediate layer 15 provided on the part 4 is pasted, the means of claim 2 is provided under the plastic foam intermediate layer 15 provided on the heel part 4 from the front part of the arch part 5 to the rear part. The cardboard core material 16 having the size of the bottom 3 is attached.

  In the means of claim 5, the insole 3 of the shoe 1 having the heel 2 of the means of claim 1 or 2 is formed on the outsole 19, and the rear surface layer 6 of the insole 3 is provided. The shaft through hole 13 into which only the head through hole 12 of the heel nail 11 that opens to the upper hard board 8a to be formed and the shaft 11b of the heel nail 11 that opens to the lower shank 9 of the upper hard board 8a can be inserted. The shaft portion 11 b of the heel nail 11 is inserted, the lower surface of the head portion 11 a of the heel nail 11 is brought into contact with the upper surface of the shank 9 around the shaft insertion hole 13, and the heel nail 11 is lowered to the heel portion of the heel portion 4. 2 is a shoe 1 having a heel 2 characterized by having an upper 18 made of upper at the upper periphery of the insole 3.

  In the means of claim 6, in place of the insole 3 of the shoe 1 having the heel 2 of the means of claim 1 or 2, the insole 3 of the shoe 1 having the heel 2 of the means of claim 3 is changed to the outsole. 19 and has a head through hole 12 in the heel nail 11 that opens in the upper hard board 8a that forms the rear surface layer 6 of the midsole 3, and an opening in the lower shank 9 of the upper hard board 8a. The shaft portion 11 b of the heel nail 11 is inserted into the shaft insertion hole 13 of the heel nail 11 to be performed, and the lower surface of the head portion 11 a of the heel nail 11 is placed on the upper surface of the shank 9 around the shaft insertion hole 13 of the heel nail 11. The heel 2 is characterized in that the heel nail 11 is engaged with the heel nail 11 being locked to the heel 2 disposed at the lower part of the front bottom 19 and an upper 18 made of upper is formed on the upper periphery of the midsole 3. It is shoes 1 to have.

  In the means of claim 7, the insole 3 of the shoe 1 having the heel 2 of the means of claim 4 is replaced with the insole 19 of the shoe 1 having the heel 2 of the means of claim 4 instead of the means 1 of claim 1. The upper through hole 12 of the heel nail 11 that opens in the upper hard board 8a that forms the rear surface layer 6 of the insole 3 and the lower shank 9 of the upper hard board 8a. The shaft 11b is inserted into the heel nail 11 through the shaft insertion hole 13 of the heel nail 11, and the lower surface of the head 11a of the heel nail 11 is brought into contact with the upper surface of the shank 9 around the shaft insertion hole 13 of the heel nail 11. The heel 2 is characterized in that the heel nail 11 is locked to the heel 2 disposed at the lower part of the front bottom 19 and the upper 18 made of upper is formed at the upper part of the periphery of the midsole 3. It is shoes 1 to have.

  In the means of claim 8, the shoe 1 having the heel 2 is provided with an air sole 21 which is an elastic rubber capsule by enclosing air in the material of the front bottom 19 of the front arch portion 5 of the front bottom 19. A shoe 1 having a heel 2 as claimed in any one of claims 5 to 7.

  According to the present invention, a through-hole is freely opened through the head of the heel nail formed on the upper hard board of the rear surface layer of the middle bottom of the means of the present invention, and the heel is attached to the shank disposed on the back side of the upper hard board of the surface layer. Since the shaft insertion hole that allows only the shaft portion of the nail to be freely inserted is provided, a shoe having a heel formed by locking the insole to the heel with a heel nail is used by a person wearing the top of the heel. When the weight is applied and the insole is pressed downward, even if the plastic foam intermediate layer inserted in the middle of the insole of the heel part is compressed and thinned by the weight of the weight, it is applied to the upper rigid board of the insole. Since the head through hole of the opening has a space thicker than the thickness of the head of the heel nail and has a margin that the head does not protrude above the upper hard board, this space part is The heel nail head can move up and down Minute and made to heel nail's head is never jump out on top from the upper rigid board. Therefore, the heel of the person wearing this shoe is not damaged by the heel nail, and the comfort is excellent. Even with a thin heel, when a pebbled stone is stepped on with a heel, the impact of a foreign object is absorbed in the upper hard board, which is the upper surface layer of the insole, so there is no loss of balance and therefore fatigue. Therefore, it can be worn for a longer time than a shoe having a conventional heel. In addition to these, an air sole made of an elastic rubber capsule encapsulating air integrally formed on the front bottom of the arch portion of the shoe sole is disposed on the sole of the front portion of the arch portion. Since the impact is alleviated, it can be worn for a long time without further fatigue.

The perspective view which shows how to combine the typical material of an insole of this invention. The perspective view which shows how to combine the other typical insole material of this invention. The perspective view of the insole which consists of a combination of the basic material of this invention. The perspective view of the insole which consists of the combination of the other basic raw material of this invention. The perspective view of the insole which consists of a combination of FIG. FIG. 3 is a perspective view of an insole formed by the combination of FIG. 2. The figure which shows how to attach the shank to the middle bottom rear upper surface material. The perspective view which shows how to attach an insole to an outsole. The perspective view which shows the effect of the attachment state by the heel nail with the insole and the heel part which has a heel, and shows the position of the head of a heel nail when not receiving the weight. The perspective view which shows the effect of the attachment state by the heel nail with the insole and the front bottom of the heel part which has a heel, and shows the position of the head of a heel nail when receiving the weight. It is a perspective view of shoes which have a heel which has an air sole arranged in the material of the front bottom of the arch part.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below with reference to drawings. The insole 3 of the present invention can be applied to various shoes 1 as long as the shoe 1 has the heel 2. The type of the upper 18 that is an upper covering the rear portion of the foot provided on the sole 20 of the shoe 1 is not particularly selected. However, it is the high heel of the heel part 4 that shows a significant difference between the case where the insole 3 of the present invention is used and the case where it is not used.

  As described above, it is suitable for high heel pumps having a heel 2 at the heel part 4 and is not limited to a high heel, and is used in combination with the shoe 1 to which the insole 3 of the present invention can be applied. The shape and structure of the upper 18 to be selected is not selected. Therefore, a shoe 1 having many heels 2 such as a mid heel pump, a low heel pump, a sling back, a side open, a sandal, an ankle strap, an in The insole 3 of the present invention is applied to a shoe 1 having a heel 2 such as a step strap, a T-strap, an open toe, a gilley, an ankle boot, a short boot, a half boot, and a long boot. can do.

  As shown in FIG. 1, the most typical structure of the insole 3 of the present invention is as shown by an arrow from the upper side to the lower side in the part from the front end 5 a of the arch part 5 to the rear heel part 4 ( a) Upper hard board 8a made of pulp board or leather board as the rear surface layer 6; (b) Shank 9 made of steel or hard plastic which is the core of the step; and (c) Plastic foam which is a cushioning material. Intermediate layer 15, (d) cardboard core material 16 having a size from the heel to the toe, and (e) lower hard board 8 b, and (f) flexible plastic foam front surface layer It is composed of a half-moon-shaped front end portion hard board 8c (g) placed on 17 front end portions 17a, and these are integrally bonded together.

  In these, between the shank 9 of (b) and the cardboard core material 16 of (d), as shown in FIG. 1, the plastic foam intermediate layer 15 which is a cushion material of (c) is interposed, Alternatively, as shown in FIG. 2, a cardboard core material 16 of (d) is interposed between the shank 9 of (b) and the plastic foam intermediate layer 15 which is a cushioning material of (c). . In this structure, a non-woven fabric may be used in place of the cardboard core material 16 of (d), or a non-woven fabric may be used on the cardboard core material 16. Similarly, it may be extended to the toe portion 7 at the front portion of the arch portion 5 so as to form the midsole 3 of the front portion without stepping on.

  Then, a flexible plastic foam front surface layer 17 as a thin cushion material is bonded to the toe portion 7 on the cardboard core material 16 which is the upper end side of the lower hard board 8b or the nonwoven fabric provided thereon. It may be affixed with an agent to provide a soft touch to the toe side of the foot. Furthermore, a half-moon-shaped front end hard board can be stuck on the front end of the flexible plastic foam front surface layer 17. By the way, after preparing a member that forms the upper surface portion of the top bottom 19 of the shoe 1 at the tip portion on the toe side and being laminated along the shoe shape integrally with the bottom bottom 19 reaching the heel 2, An adhesive is applied between the prepared member and the back surface of the insole 3 so that they are bonded together and pressed from the top of the insole 3 so that the insole 3 and the bottom 19 are three-dimensionally The sole 20 has an integral shape. The ladies' shoes of the shoes 1 having the heel 2 can be obtained by combining the upper 18 that is the upper with the monolithic body comprising the outsole 19 and the heel 2 and the midsole 3 that are the soles 20.

  The upper hard board 8a is made of a pulp board, a leather board obtained by solidifying scrap leather, a compressed cardboard, or a thick paper board, and can be hardened by impregnating with a synthetic resin if hardness is required. Of the part of the rear end 4b of the heel part 4 from the front end 5a of the arch part 5 of the upper hard board 8a, the rear surface layer 6 of the rear surface of the part of the rear end 4b of the heel part 4 from the center 5b of the arch part 5 As shown in FIG. 7, a steel shank 9 is arranged in the longitudinal center 6 a, and a front portion 9 a and a rear portion 9 b of the steel shank 9 are integrally formed with the upper hard board 8 a with rivets or eyelets 10. The member is fixed to reinforce the insole 3.

  The shank 9 that is the core of the step is a member made of a steel leaf spring, and supports the insole 3 so that it does not bend even when a load is applied from above. It is gently curved and formed into an arch shape along the shape of the bottom. Further, by providing ribs protruding in a curved shape at the left and right central portions, which are the central longitudinal direction of the shank 9, the heel portion 4 from the arch portion 5 is hardly broken. In this case, it is possible to make the shank 9 thinner and lighter by increasing the strength by quenching the entire steel of the shank 9.

  A shaft insertion hole 13 that is slightly thicker than the shaft diameter of the shaft portion 11b of the heel nail 11 is formed in the shank 9 so that the shaft portion 11b of the heel nail 11 such as a heel fixing screw nail or a heel fixing spiral nail can be easily inserted into the shank 9. Form. In this case, one or a plurality of, for example, three shaft insertion holes 13 in FIG. 7 are formed in the rear portion 9 b of the shank 9. The shank 9 fixed to the back surface of the upper hard board 8a includes other bottom members, such as the plastic foam intermediate layer 15 of FIG. 1 or the cardboard core material 16 of FIG. 2, together with the back surface of the upper hard board 8a. The inner part of the heel 2 of the heel 2 disposed in the lowermost part from the top of the shank 9 is bonded to the rear member of the other insole 3 constituting the lower part of the lower part of the shank 9. The heel nail 11 is tightened and integrated with the heel. As shown in FIG. 9 or FIG. 10, a top lift 2b made of elastic rubber or the like is locked to the lower end of the heel 2 with screw nails to mitigate the impact from the ground.

  The diameter of the shaft screw hole 13a that forms the shaft insertion hole 13 in the shank 9 is slightly larger than that of the shaft 11b so as not to interfere with the periphery of the shaft 11b of the heel nail 11. It is a hole. However, on the other hand, the shaft insertion hole 13 is a hole having a diameter smaller than the diameter of the head 11a of the heel nail 9, and the head 11a of the heel nail 11 cannot pass through. Therefore, the heel nail 11 abuts against the shank 9 from above with the head 11a so that the shank 9 having elasticity of the leaf spring does not float upward from the front bottom 20 or the heel neck 2a. Playing a role.

  The upper hard board 8a is provided with a head through hole 12 that is larger than the shaft screw hole 13a at the upper portion of the shaft screw hole 13a of the shank 9. The diameter of the head through-hole 12 opened in the upper hard board 8a is larger than the diameter of the head 11a of the heel nail 11 which is a heel nail of the heel nail or a heel set screw nail. 11 is formed in a size that does not interfere with the periphery of the head 11a. When the load of a person wearing shoes is applied from the top, the head 11a of the heel nail 11 holding the shank 9 is lifted upward from the shank 9, but the thickness of the partial hard board 8a is sufficiently larger than the lifted portion. Since it is formed thick, the head 11a of the heel nail 11 can move up and down within the thickness of the head through hole 12 of the upper hard board 8a. Therefore, even if a load from the sole is applied to the insole 3, the head 11a of the heel nail 11 does not directly abut against the sole and damage the sole.

  For the plastic foam intermediate layer 15 which is a cushioning material, EVA rubber made of ethylene vinyl acetate resin and other plastic foams such as urethane rubber which is a urethane foam having dense bubbles are suitable. As described above, when the upper hard board 8a and the shank 9 are pushed downward by the sudden downward load movement applied to the heel part 4, the plastic foam intermediate layer 15 which is a cushion material contracts following it. Further, when receiving vibration due to unexpected push-up from the heel 2 side of the shoe sole 20, the plastic foam intermediate layer 15, which is a cushioning material, receives this vibration and contracts, so that such impact can be absorbed and buffered. At that time, the plastic foam intermediate layer 15 as a cushion material contracts in response to pressure from above and below, while the heel nail 11 such as a heel fixing spiral nail or a heel fixing screw nail is made of metal and thus remains uncontracted. is there. When the plastic foam intermediate layer 15 that is a cushioning material is contracted, the portion of the head portion 11a of the heel nail 11 that is a screw that is pressed so as to abut against the shank 9 is upward from the shank 9 as described above. It floats away and escapes to the thickness portion of the space above the head through hole 12 that is open to the upper hard board 8a. Therefore, the thickness of the plastic foam intermediate layer 15 is designed in advance so that the degree of shrinkage of the plastic foam intermediate layer 15 as a cushion material is within the thickness of the space above the head through-hole 12 in the upper hard board 8a. And adjust it.

  The adhesive for laminating the materials constituting the insole 3 and laminating them together is, for example, a polyester-based adhesive, which may be any of a solvent-soluble type, a hot melt type, and a water dispersion type. The material of the adhesive and the like are appropriately selected according to the adhesive strength.

  The material forming the upper surface of the midsole 3 on the toe side of the arch portion 5 of the shoe 1 is left as the cardboard core material 16 or an EVA rubber layer or a flexible as a thin cushion material on the cardboard core material 16. A plastic foam front surface layer 17 is formed. Considering that the EVA rubber layer or the flexible plastic foam front surface layer 17 forming the upper surface of the insole 3 on the toe side is in direct contact with the sole when no insole is laid. Thus, a knitted fabric is pasted on the entire surface to make it feel good when it comes into direct contact with the sole.

  On the other hand, the cardboard core material 16 that forms the lower surface of the insole 3 is formed by impregnating a synthetic resin into a cotton fiber or non-woven fabric as a material other than cardboard and imparting tough hardness as a core material. A grid-like net made of fine yarn is formed on the back surface of the material on the front side of the arch portion 5 of the insole 3 and the back surface of the lower hard board 8b on the back side of the front end 5a of the arch portion 5 made of these materials. doing. Thus, since the back surface of the insole 3 is attached with a lattice-like net made of fine threads, the back surface of the insole 3 is roughened on the surface portion of the front bottom 19 forming the shoe sole 20, and the adhesive. Adhesion is enhanced with good loading.

  Further, an air sole 21 which is an air cushion material of a slightly flat soft plastic elastic rubber capsule made of a hollow pipe is disposed on the toe side of the front bottom 19 so as to have an impact absorbing power. In the pump high heel of FIG. 11, the air sole 21 is disposed inside the front bottom 19 before stepping on. When the air sole 21 is disposed inside the front portion of the front bottom 19 in this way, the air sole 21 that is an air cushion material on the toe side and the shock absorption that has the structure of the insole 4 on the heel side are combined. In other words, the impact is absorbed by the entire shoe 1 on the front side, that is, the toe side portion and on the rear side, that is, the heel side portion, with the load movement applied to the shoe sole 20 during walking. Accordingly, the shoe 1 having the air sole 21 on the front sole 19 without stepping on the air sole 21 applies a load in a more appropriate balance than the shoe 1 having the sole 20 without the air sole 21 on the front sole 19 without stepping on the air sole 21. Since it can be received, the walking of the person who wears the shoe 1 is more stable and comfortable, and is less fatigued, so that it is more suitable for long-time use.

  The material of the inner bottom 3 of the present invention was tested for the resilience of the material with respect to the point that it has the characteristics of excellent shock absorption and buffering properties as described above. The test method is based on JIS K6400. A steel ball having a diameter of 16 mm and a mass of 16 g is dropped from a height of 500 mm from the upper surface of the test piece, and the rebound resilience is defined as a percentage of the drop height with the highest height bounced back. It is what I have sought. Specifically, a sample of 9 laminated pulp boards compressed as hard board and 8 EVA rubbers is used as a sample, and a test piece is cut out from this sample to a size of 100 mm × 120 mm × 50 mm, and its rebound resilience When the rate was confirmed, the rebound resilience was 3%. In this way, to support the load, it is possible to give strength by mainly using hard board and EVA rubber, and also by combining EVA rubber with cushioning properties, both shock absorption and buffering properties are achieved. It was confirmed that Therefore, by causing the insole 3 of the present invention to exhibit such shock absorption and cushioning due to cushioning properties, vibration is absorbed by the heel portion 4 when the shoe 1 is worn, and as a result, a sense of stability is obtained. As a result, comfort is improved.

  A woman's shoes 1 having a pin heel type heel 2 having a heel height of 8.5 cm using the insole 3 of the present invention are used to walk for a certain period of time. It compared with the case where the shoes 1 which have this were put on. First, a 3D acceleration sensor (a sensor using a pedometer application installed in Apple's iPhone) was used, and the iPhone was fixed at the waist position and detected by walking for 1 hour. As a result, in the case of the shoe 1 comprising the insole 3 of the present invention, the number of steps detected by the pedometer was reduced by about 10% compared to the conventional heel shoe of the insole. Since this pedometer is a mechanism that counts as the number of steps when an acceleration fluctuation exceeding a certain threshold is detected, it can be said that the impact is absorbed and alleviated by the amount of the detected number of steps decreased.

  Next, the shoe 1 having the heel 2 of the present invention was worn, and an experiment was conducted on the stability when walking or going up and down stairs. In this experiment, a 31-year-old clerical worker has a heel height of 8.5 cm as a shoe 1 having the insole 3 and the air sole 21 of the present invention on the front bottom 19 of the heel portion 4 and having a heel. Pumps high heels of size 23cm, weight 290g, company A heel height 10cm, size 22.5cm, weight 230g pumps high heels as example of conventional insole 3, company B heel height 9cm, size 23cm, weight Wearing a shoe 1 having three kinds of heels 2 made of 240 g of pump high heels, (1) walking on a general road, and a stone roller having a diameter of 1.5 cm at the sole 20 on the front sole 19 in front of the arch 5 An experiment that considers the degree of wobbling when stepping on (2) An experiment that repeatedly climbs up and down the 18-step staircase and examines the stability when climbing and descending the staircase Was Tsu.

  In the experiment of (1), the shoe 1 having the heel having the insole 3 and the air sole 21 of the present invention on the front bottom 19 of the heel part 4 is attached to the front bottom 19 of the heel part 4. The air sole 21 compresses the outsole 19 with a feeling of enveloping a stone having a diameter of 1.5 cm, absorbs the stone and stabilizes the front part, and stabilizes the front part. The impact on the heel of the sole of the foot accompanying the compression of the portion of the plastic intermediate layer 15 attached as the material to the heel portion 4 of the insole 3 was also alleviated. On the other hand, in the conventional shoe 1 that does not have an air sole on the insole and the front part of the step, if the step is not performed on the stone roller of the above size and the step is stepped on at the front part, the sole will be inclined without being stabilized. I couldn't support the heel, and I started to knock my ankle. On the other hand, in the shoe 1 of the present invention, the head portion 11a of the heel nail 11 engaging the portion of the heel 2 with the portion of the heel portion 4 is the upper hard board 8a as the uppermost layer of the insole 3. The impact on the heel of the sole received from the heel 2 was alleviated by the movement up and down within the thickness of the heel.

  Further, in the experiment of (2), the stairs were repeatedly climbed up and down, but the insole 3 and the air sole 21 of the present invention were provided on the front bottom 19 of the heel part 4 and the heel part 4 of the heel part 4 of the present invention The shoe 1 having the heel 2 made of the structure does not have a conventional air sole when the impact from the shoe sole 20 received when going down the stairs, and further compared with the shoe 1 having the heel portion 4 of the insole 3 of the conventional structure. Thus, the burden on the knee joint was small, and it was possible to get off lightly and stably. In addition, the shoe 1 having the air sole of the present invention and having the structure immediately above the heel 2 of the heel part 4 of the present invention when climbing the stairs has no conventional air sole and has a conventional heel part. Compared to the shoe 1 having the midsole 4, the shoe could be climbed more stably, and there was less fatigue.

  Next, as an embodiment for obtaining the shoe 1 using the insole 3 in the present invention, a procedure by an adhesion method using a cement method will be described. First, the upper 18 as the upper is sewed according to the shoe mold (last) to adjust the shape, and then combined with the insole 3 for sewing or bonding. Next, an adhesive is applied to the lower surface of the insole 3 and the upper surface of the outsole 19 and the heel 2, and the upper 18 and the insole 3 are firmly attached to the outsole 19 and the heel 2. . Next, the heel set screw nail which is the heel nail 11 is tightened from the top of the shank 9 toward the heel 2 from the insole 3 side, while preventing the lower surface of the insole 3 from being lifted from the heel 2. The plastic foam intermediate layer 15 which is a cushion constituting the bottom 3 is fixed with a thickness so as not to be crushed. In addition, the insole is inserted through the opening to insert the foot of the crust, and this is bonded to the upper surface of the insole 3 with an adhesive to finish the inner surface of the inner sole, and the ladies' shoe 1 with the heel 2 is attached. obtain.

  The insole 3 of the present invention can be applied as various types of shoe soles 20 by combining it with the outsole 16 having the heel 2, and in combination with the upper 18 that is an upper. Therefore, the present invention can be widely applied to women's shoes 1 having various types of heels 2.

DESCRIPTION OF SYMBOLS 1 Shoes 2 Heel 2a Heel neck 2b Top lift 3 Middle bottom 4 Heel part 4a Center 4b Rear end 5 Arch part 5a Front end 5b Center 6 Rear surface layer 6a Vertical center part 7 Toe part 8 Hard board 8a Upper hard board 8b Lower hard Board 8c Front end hard board 9 Shank 9a Front 9b Rear 10 Rivet or eyelet 11 Heel nail 11a Head 11b Shaft 12 Head through-hole 13 Shaft insertion hole 13a Shaft screw hole 14 Middle bottom rear upper surface material 15 Plastic foam Intermediate layer 16 Cardboard core material 17 Flexible plastic foam front surface layer 17a Front end 18 Upper 19 Outsole 20 Shoe bottom 21 Air sole

Claims (8)

  A rear surface layer from the heel rear end to the arch front end is formed from a hard board made of pulp board or leather board on the insole having a size from the toe portion to the heel rear end of the shoe having a heel, A steel shank piece (hereinafter referred to as “shank”) is disposed at the longitudinal center of the back surface of the upper hard board, which is the portion of the rear surface layer from the heel center of the rear surface layer to the center of the arch. The front and back of the shank are fixed to the back of the upper hard board with rivets or eyelets, and the head of the heel nail can be freely passed through the upper hard board, which is the rear surface layer located on the rear of the shank. Shaft insertion allowing only the shank of the heel nail to pass freely through the shank on the lower surface of the head through-hole of the heel nail of the upper hard board. Is formed concentrically with the head through-hole, and a mid-bottom rear upper surface material is formed from a hard board of the rear surface layer having these shanks on the back surface, and the front rivet or eyelet of the mid-bottom rear upper surface material is formed. Stick an elastic plastic foam intermediate layer from the rear to the heel rear end, and then place a cardboard core material of the size of the midsole on the back of the plastic foam intermediate layer from the arch front end to the heel rear end The remaining cardboard core material is attached to the front part of the arch part of the insole 3 to the toe part, and the back surface layer of the heel part is formed on the back surface of the cardboard core material behind the front edge of the arch part. An insole for a shoe having a heel, wherein a lower hard board made of the same material as the upper hard board is attached and laminated integrally.   A rear surface layer from the heel rear end to the arch front end is formed from a hard board made of pulp board or leather board on the insole having a size from the toe portion to the heel rear end of the shoe having a heel, A steel shank is placed in the longitudinal center of the back of the upper hard board from the center of the rear surface layer to the center of the arch, and the front and rear of the shank are secured to the back of the hard board with rivets or eyelets. A head through hole through which the head of the heel nail can freely pass through the upper hard board, which is a rear surface layer located on the rear part of the shank, and the head through hole of the heel nail of the hard board. The rear part which has a shaft part insertion hole that allows only the shaft part of the heel nail to freely pass through the shank on the lower surface of the head, is concentric with the head through hole, and has these shanks on the back surface. A mid-sole rear top surface material is formed from the hard board of the face layer, and a cardboard core material having a size of the mid-sole is applied to the front part of the arch part from the front end of the arch part to the rear part of the heel part on the front part of the top part of the bottom part of the bottom part Then, the remaining cardboard core material is made the part from the front part of the arch part of the insole to the toe part, and an elastic plastic foam intermediate layer is pasted on the back surface of the cardboard core material behind the front end of the arch part. In addition, the lower hard board of the same material as the upper hard board of the rear surface layer of the heel part 4 is pasted on the back surface of the cardboard core material and the elastic plastic foam intermediate layer behind the arch front end, and laminated integrally. An insole of a shoe with a heel characterized by.   The cardboard core material of the midsole has a flexible plastic foam front surface layer formed on the upper part of the part from the arch to the toe part, and the rear end of this flexible plastic foam front surface layer The insole of a shoe having a heel according to claim 1 or 2, characterized in that is connected to the front end of the arch of the upper hard board of the rear surface layer.   Flexible plastic foam front surface layer on top of the part from the arch to the toe part on the cardboard core material is the same material as the upper hard board of the rear surface layer on the toe part of the front end part 4. The insole of a shoe having a heel according to claim 3, characterized in that it comprises a rigid board.   A head penetration of a heel nail having an insole formed on an outsole and having an insole on a top hard board forming a rear surface layer of the insole. The shaft part of the heel nail is inserted into the shaft part insertion hole through which only the shaft part of the heel nail opening to the hole and the lower shank of the upper hard board is inserted, and the lower surface of the head part of the heel nail is inserted into the shaft part insertion hole. The heel has a heel characterized in that the heel nail is in contact with the upper surface of the shank around the heel, and the heel nail is locked to the heel at the lower part of the heel part, and an upper made of an upper is formed on the upper part around the insole. shoes.   3. A shoe insole having a heel according to claim 1 or 2, wherein the shoe insole having a heel according to claim 3 is formed on the outsole, and a rear part of the insole Insert the heel nail shaft through the heel nail head through hole that opens in the upper hard board that forms the surface layer and the heel nail shaft insertion hole that opens in the lower shank of this upper hard board. The lower surface of the head is in contact with the upper surface of the shank around the shaft insertion hole of the heel nail, the heel nail is locked to the heel arranged at the lower part of the front bottom, and the upper part of the periphery of the midsole is made of upper A shoe having a heel characterized by having an upper formed.   A shoe insole having a heel according to any one of claims 1 to 3, wherein a shoe insole having a heel according to claim 4 is formed on the outsole, and a rear surface layer of the insole The head portion of the heel nail is inserted into the head through hole of the heel nail that opens in the upper hard board and the shaft insertion hole of the heel nail that opens in the lower shank of the upper hard board. The lower surface of the butt is brought into contact with the upper surface of the shank around the shaft insertion hole of the heel nail, the heel nail is locked to the heel arranged at the lower part of the front bottom, and the upper part of the periphery of the midsole is made of upper A shoe having a heel characterized by having an upper formed.   The heel according to any one of claims 5 to 7, wherein the shoe having a heel has an air sole disposed in a material of a front portion of an outsole rather than an arch portion of the outsole. Having shoes.

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