JPH04101603U - Breathable insoles and buried soles, and rubber shoes using them - Google Patents

Abstract

(57) [Summary] [Purpose] The midsole and the embedded sole used in shoes are integrally molded, and the midsole is provided with ventilation holes, and the embedded sole is provided with a hollow chamber with a support bone and a communication groove. This prevents stuffiness inside. [Structure] In the midsole (1) and the buried sole (2), which are integrally formed at the same time, there are elongated struts (3) and elliptical struts (3a) at the heel and footing parts of the buried sole (2), respectively. A hollow chamber (4) having supporting bones such as the like is provided so that the insides of each are connected,
A communication groove (6) having a smaller cross-sectional area than the hollow chamber (4) is provided in the unexplored portion between these, together with the elongated support bone (3). On both left and right sides of the elongated support bone (3), overhanging parts (3'') are provided up to the peripheral protrusion (2a) of the buried sole (2). A ventilation hole (5) is provided to communicate with the hollow chamber (4).

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to breathable insoles and buried soles, and rubber shoes using the same. It is something.

0002

[Conventional technology]

Traditionally, shoes made of synthetic resin or rubber, especially rubber shoes, have poor breathability and can cause sweating. As a result, the feet become stuffy and suffer from athlete's foot, which is unsanitary and causes discomfort. So this In order to improve A pump with a groove or a pump installed in the heel, and a suction valve and a An exhaust valve or similar device is installed to send air into the ventilation channel at the front of the shoe sole, which is then guided into the shoe compartment. There is a way to dry the inside of shoes.

0003 In the first type of shoes with grooves all over the inside of the sole, part of the sweat from the feet is absorbed into the grooves. Sweating is suppressed because it does not fall on the skin or is forced to move due to the pump action inside the shoe. Therefore, it was not possible to prevent stuffiness inside the shoes. Also listed below For shoes with a pump or intake valve inside the heel, air circulation is one-sided. In addition to being inefficient, the structure is complex and manufacturing is time-consuming and cumbersome, making it uneconomical. won. As a result, it was not commercialized and was never seen on the market.

0004 In addition to this, as a measure to improve this, we have proposed As an idea, a hollow chamber was carved in the heel of the sole body, and a hollow part and communication were bored in the buried sole. These rubber shoes have air permeability by providing ventilation holes in the insole.

[0005]

[Problem that the idea aims to solve]

In the invention of Utility Application No. 2-86547 related to the applicant's earlier application, the midsole and the buried bottom are Since each piece was cut and molded separately using a blade mold, it was time-consuming and inefficient. or When molding the buried support bone, if it is not connected to the whole, it may be formed in a so-called island shape. There was a limit to the shape of the vertebrae. The insole and the bottom formed as described above. The bottoms were glued together after applying adhesive to each layer and letting it dry. like this Drying the adhesive requires space and time, and drying may scatter the organic solvent. , the working environment was not sanitary.

[0006] Therefore, the invention of claim 1 of the present applicant involves molding the midsole and the buried bottom separately, which reduces the efficiency. There is no limit to the shape of the buried trabecular bone, and it can be molded into the desired shape without having to be shaped into a There is no need for adhesives, so there is no hassle, and there is no need to create an unsanitary environment. By integrally molding the bottom and the buried bottom, the buried bottom can be molded into the desired shape, and no adhesive is required. This improves work efficiency, improves the working environment, and provides better ventilation than before. To provide a breathable midsole and padded sole that provides good wearing comfort. The purpose is to

[0007] The invention according to claim 2 is characterized by the breathable inner sole and the padding according to claim 1. It has breathability by using the sole and also providing a hollow chamber and a support bone in the heel part of the sole body. It is an object of the present invention to provide rubber shoes which are made as described above.

[0008] The invention according to claim 3 is applicable to the breathable rubber shoes according to claim 2. Furthermore, hollow chambers and communication grooves are provided in the treading and non-treading parts of the sole body to improve breathability. The aim is to provide comfortable rubber shoes.

[0009]

[Means to solve the problem]

The breathable midsole according to claim 1 of the present invention is provided under the flap cover on the back side of the midsole. On the inside of the adhesive point on the periphery of the heel part, that is, in the buried part, the heel part and the tread part are each A hollow chamber with a support bone of the same thickness as the buried sole is provided so that air can communicate with the heel. A communication groove having a smaller cross-sectional area than the hollow chamber in the treading part is located between the treading part and the treading part. A ventilation hole is provided in the inner bottom to communicate with the hollow chamber. It is something. Therefore, it is connected only through the communication groove, and the other parts are connected to the end of the buried bottom. Extended and blocked. The buried support bone formed as described above has other parts, In other words, it is not necessarily connected to the periphery or other supporting bones, but is independent in a so-called island-like manner. It can be molded into Therefore, it can be molded into any shape and can be made smaller. This allows air to flow in all directions, resulting in better air permeability than before. Ru. Since the inner sole and buried sole are one piece, the required compound rubber is used when molding. A cavity of the desired shape is created inside the mold by a conventional method, and the material is pressurized and vulcanized. By doing so, molding can be performed simultaneously. or other materials, e.g. Even if the synthetic resin has the same properties as rubber, it is sufficient as long as it has the same adhesive properties and heat resistance as rubber. .

0010 A non-stepping part that communicates the hollow part of the heel part and the toe-side stepping part in the buried bottom. The reason why the cross-sectional area of the communicating groove was made smaller than that of both of the above-mentioned hollow parts is that In order to further pressurize the air from the hollow chamber and send it to the front tread area by pump action. It is. In the above, the hollow part and the communication groove are formed so that the buried bottom is in the form of an island and penetrates through it. Alternatively, it may be engraved. However, by making the entire midsole and buried bottom thinner, In addition, in order to reduce the weight, it is better to have no unnecessary parts at the bottom. In addition, there is a connection in the futoku part. Hollow chambers or supporting bones may be provided within the range that does not interfere with the function of the groove.

[0011] The heel part and the stepping part of the midsole are connected to the part corresponding to the hollow chamber of the buried bottom. The purpose of providing the ventilation holes is to vent the air inside the shoe to the hollow chamber in the sole. This is because it has the opposite effect. The location where the ventilation hole is provided is the tread part. There is no particular limitation, and it may be provided on the overall average. However, areas where sweating is particularly high, For example, they may be provided centrally in the main part of the foot pedal, and scattered in other parts. General The size of the air holes depends on the type of shoe, the size of the hollow chamber, and the number of ventilation holes, but in general A suitable diameter is about 1 to 4 mm. If the diameter is smaller than 1mm, it will pass. If the amount of air is small or larger than 4mm, the ventilation will be weak and not effective. It is the body. In addition, ventilation is provided at the part of the midsole that corresponds to the communication part of the unexplored part of the buried bottom. The reason why there are no holes is that if the ventilation escapes midway, the pressure will drop and it will flow forcefully to the tread area. That's because there isn't.

0012 The outer edge of the back surface of the insole, that is, the outer edge of the buried sole inside the area where the circumferential edge of the cover is attached. Sometimes there are ridges on the edges. This is to make the outer edge of the buried bottom clear. child The height of the ridge is the same as that of the vertebrae. In addition, the outer edge of the buried bottom The rim ridges are provided even if the support bone is not continuous to the outer edge, and it is not necessary for ventilation or shaping. It is not necessary to provide it as long as it does not cause any problems.

[0013] The invention according to claim 2 is the invention according to claim 1, which includes the breathable midsole and Rubber shoes are made of rubber shoes. In other words, the shoe cover, the sole body, the midsole, and the buried sole. The back of the midsole of the insole and the back side of the insole that are integrally molded at the same time in rubber shoes made of The heel part and the tread part on the inside of the adhesive part of the lower edge of the cover, which is the adhesive part of the side buried sole. A hollow chamber with supporting bones is provided in each to allow air to communicate inside, and in the unexplored part A communication groove having a smaller cross-sectional area than the hollow chamber is provided to communicate with the heel portion and the inner sole. A ventilation chamber is provided in the tread area that communicates with the hollow chamber in the buried sole, and a spine is attached to the heel of the sole body. It is characterized by having hollow chambers that communicate with each other. In this claim The midsole and buried bottom of the case are the same as those in claim 1 above.

[0014] Here, rubber shoes are the same as conventional general rubber shoes, such as short rubber shoes and deep shoes. and boots, etc., and the presence or absence of lining material is irrelevant. When using a backing material, for example, woven fabric Reticulated materials such as , knitted fabrics, and mesh may be used. Breathability when using mesh becomes even better and the effect increases.

[0015] Generally, the sole body is molded integrally with the heel part. This molding is made of rubber The compound is molded using a mold using a conventional method. Lightweight due to the hollow chamber in the heel Become. Since the hollow chamber of the sole body can be deep and large, the invention of claim 1 above is improved. The amount of ventilation increases, and the dehumidification effect inside the shoe increases. There is a lining material inside the midsole. Because of its breathability, air can flow smoothly into the shoe through the ventilation holes in the midsole. the The rest is the same as in claim 1. In addition, the material of the sole body is the same as the above-mentioned insole, etc. Other materials, such as synthetic resins, may be used as long as they have rubber-like properties.

[0016] The device according to claim 3 is the device according to claim 2, in which in the sole body, A hollow chamber with a support bone that communicates with each other is also provided in the stepping part on the toe side, and a buried part is provided in the non-stepping part. Similar to the bottom, a communicating groove with a smaller cross-sectional area than the hollow chambers of the heel and tread parts is provided, and the above-mentioned These rubber shoes utilize a breathable midsole and a buried sole that communicate with the hollow chamber of the rubber shoe. this In this case, the shape of the embedded sole and the support bones of the sole body must not affect breathability, durability, and comfort. It may be isomorphic. The shape of the communication groove between the sole body and the buried sole does not need to be the same. , it is effective to make them correspond to each other. Others are the above-mentioned claims 1 and 2. It is similar to

[0017]

[Effect]

The invention according to claim 1 provides ventilation holes in the midsole when the shoes are used for walking. The air that passes through and enters the buried bottom goes to the hollow chamber in the heel part of the buried bottom, and then to the communication area of the unexpanded part. It passes through the groove to the hollow chamber in the tread area, and from there it passes through the air hole in the midsole to the sole. It is something I will return to. This is repeated sequentially as you walk.

[0018] According to the second aspect of the invention, when walking, air inside the shoe flows through the air holes in the midsole into the buried sole. The hollow chamber is further entered into the hollow chamber of the heel portion of the main body of the sole, and then the sole is buried in the same manner as in claim 1 above. The pressure passes through the communication groove in the non-stepping part, and goes to the hollow chamber of the stepping part, and opens the ventilation hole. It passes through the shoe, enters the shoe, and exits through the shoe opening. This is repeated sequentially as you walk. It is something that

[0019] The invention according to claim 3 is similar to claim 2, and includes a buried sole and a heel of the sole body. The air inside the shoe that has entered the hollow chamber in the part passes through each communication groove in the non-stepping part. is pressurized into the hollow chamber in each treading part, and then the above-mentioned claim 1 and Similarly, air passes into the shoe through the air holes in the midsole, and then exits through the shoe opening. It is. This is repeated sequentially by walking.

[0020]

【Example】

Embodiments of the present invention will be described with reference to the drawings. First, the invention of claim 1 is shown in FIGS. 1 and 2. To explain further, Fig. 1 shows an enlarged bevel in which a buried sole (2) is simultaneously molded on the back side of an insole (1). FIG. 2 is a perspective view with the inner sole (1) of FIG. 1 facing forward. In Figure 1 On the back side of the insole (1), there is a patch attachment part (1a) on the periphery. On the side, a peripheral protrusion (2a) of the buried bottom (2) is provided on the entire peripheral edge. . In the heel part of the buried sole (2), vertically towards the toe approximately in the center when viewed from both left and right ends. An elongated support bone (3) is provided except for a part of the rear end. In this elongated vertebrae (3) Small protrusions (3) are provided on both sides of the holder and behind it.

[0021] The protrusion (3') is located near the rear end of the elongated support bone (3) and on both left and right sides. Oval-shaped support bones (3a) of different sizes are provided in two rows at intervals except for the sides. follow These elongated support bones (3) and elliptical support bones (3a) and the space between them There are many complex hollow chambers (4). A small oval shape immediately next to the elongated vertebrae (3) In the hollow chamber (4) between the rows of support bones (3a), ventilation holes (5) penetrate into the surface of the insole (1). It is provided throughout.

[0022] The untrodden part at the tip of the heel has a slight distance from the elongated spine (3) of the heel. Similarly, a slender supporting bone (3) is provided in the direction of the toe. Furthermore, there is a small distance from this There are equally long and slender supporting bones (3) in parallel on both the left and right sides, and between these A communication groove (6) is provided. The left and right peripheries are located at the rear of the left and right elongated vertebrae (3). An overhang (3'') is provided on each up to the projection (2a).The overhang (3'') This is to block ventilation from sources other than the communication groove (6). In addition, the side of the communication groove (6) The cross-sectional area in this direction is smaller than the cross-sectional area at the rear heel. this is This is to apply pressure to force the air in the hollow chamber (4) to the stepping part in the direction of the toe. be. On the outside of the elongated support bone (3), there is a spaced apart part similar to the heel part. There are oval supporting bones (3a), and there are many small hollow chambers (4) between them. ing.

[0023] In the stepping part in front of the above-mentioned non-stepping part, the elongated supporting bone (3) is similar to the heel part. They are provided at two locations coaxially with a slight distance from the one in the center. tip of toe The elongated side support bones (3) are provided with protrusions (3') at the front portions on both the left and right sides thereof. In addition, there is an elongated vertebrae (3) of the same shape on the opposite side in the same row, and almost in the middle of the toe. It is located in the center. In addition, ventilation holes (5) are also provided on one or both sides of the elongated support bone (3). It has good ventilation. In the stepping part, an oval (3a) outside these is the heel. They are provided in the same row and at the same spacing as in the section. The communication groove in the untrodden portion ( 6) The hollow chamber (4) in the treading part is larger than the cross-sectional area in the lateral direction. Ru. This is to pressurize the air passing through the communication groove (6).

[0024] Therefore, the stepping part also has a large number of complex hollow chambers (4) similar to the heel part. do. The hollow chamber (4) has good ventilation, and the inner sole ( 1) flows out onto the surface. Therefore, the temperature at the buried bottom (2) is kept relatively low. In addition to suppressing sweating, air flows from the ventilation holes (5) in the midsole (1) to the hollow chambers ( 4) through the communication groove (6) and forcefully passes through the ventilation hole (5) in the treading part. It is further sent to the surface of the midsole (1). Insole formed as described above (1) and buried bottom (2) are made of unvulcanized rubber kneaded in a mold using a conventional method. Since the required amount is added and vulcanized at the same time, it is possible to obtain the required thickness and separate and complicated parts. Since the required shape of the support bone can be molded at the same time, there is no need for gluing, which is efficient and improves the appearance. It can be easily molded. Therefore, it is economical.

[0025] An embodiment of the present invention according to claim 2 will be explained with reference to FIGS. 1 to 5. FIG. 3 shows a sole of a shoe. The main body (7) is shown, and the sole main body heel (8) has a hollow chamber (4) and There is an elongated shaft (3). Two elongated spines (3) are placed in the center coaxially in the longitudinal direction. They are placed at slight intervals. This is to improve mutual ventilation, but it is not necessary. is not necessary either. Between these elongated struts 3 there is a hollow chamber (4). Figure 4 is shown in Figure 3. The sole body (7) is made of rubber having an insole (1) and a buried sole (2) as shown in Figures 1 and 2. This is a partially cutaway cross-sectional view when applied to boots (A), mainly insole (1) and buried sole. (2) and the cross-sectional structure of the sole body (7).

[0026] The inside of the rubber boots (A) has a lining fabric (9) attached to the entire surface, and the inner sole (1) has a The part to which the part is attached (1a) on the back side of the cover is covered with part (1a) up to the peripheral protrusion (2a) of the buried bottom (2). 9) is attached. The surface of the sole body (7) is attached to the back of the buried sole (2). Ru. The ventilation hole (5) is formed on one side in the heel and tread area of the midsole (1), and on the other in the buried sole (2). One is open to the hollow chamber (4) of the other, while the other is opened to the lining fabric (10) to fill the gap between the weaves. This allows air to flow through the inside of the shoe.

[0027] Therefore, when wearing the rubber boots (A) of the present invention as described above, the foot As shown in Figure 4, the moist air emanating from ) through the ventilation hole (5) into the hollow chamber (4) of the buried sole (2), and then into the sole body (7). ) into the hollow chamber (4). The inside of these is then trampled by the heel of the foot. The empty chamber (4) is compressed and deformed, and as shown in Fig. 5, a communication groove (6 ) and go to the stepping part, between the elongated spine (3) and the oval-shaped spine (3a). As shown in Figure 4, it passes through the hollow chamber (4) of the lining fabric (1 It passes through the weave of 0) into the shoe, and becomes the same as above. In particular, the invention of this claim The heel part (8) of the sole body also has a hollow chamber (4) and an elongated spine (3), so the hollow chamber ( Since the volume of 4) is large and the amount of ventilation increases accordingly, the invention of claim 1 Since the effect of removing moisture through ventilation is greater than that of the fabric, sweat resistance is improved. others is the same as in claim 1 above.

[0028] An embodiment of the present invention according to claim 3 is illustrated in FIGS. 1 and 2 and FIGS. 6 to 8. explain. First, as shown in FIG. 6, the front side of the sole body (7) has the above-mentioned claim In addition to the hollow chamber (4) in the heel part (8) of the sole body described in In this case, the communication groove (6) communicating with the hollow chamber (4) is connected to the elongated shaft (3). Furthermore, in the footing part, many hollow chambers (4) are connected to the elongated support bones. It is provided along with (3). Other insole (1), buried bottom (2), and cover (9) The lining fabric (10) is the same as described above. Therefore, the hollow chamber (4 ), the overall volume is also larger, and along with this, the amount of ventilation and sweat resistance is larger. ing.

[0029] When used as shown in Figure 7, moisture inside the rubber boots (A) The air is the same as in the case described in claim 2, and the air is the same as that described in claim 2, and the air is It enters the hollow chamber (4) of the buried sole (2) and the heel part (8) of the sole body through the ventilation hole (5). . Next, as shown in Figure 8, insert the buried sole (2) and the sole body (7) that communicate with this. It goes to the communication groove (6) of the unstepped part, where it is pressurized and moves upward and downward. As shown in FIG. It passes through the hollow chamber (4) between 3a), where it is cooled and further vented through the ventilation holes (1) in the midsole (1). 5) and returns to the inside of the shoe through the lining fabric (10). And finally from the shoe opening It is something that is expelled outside. Therefore, the sole main body (7) is not treaded as much as claimed in claim 2. Since the volume is large due to the communication groove (6) in the part and the hollow chamber (4) in the tread part, the rubber length is The amount of ventilation throughout the shoe (A) increases, and the sweat-proofing effect increases accordingly. Others This is similar to claims 1 and 2 above. Note that the above embodiments also relate to rubber boots. However, it is not limited to this, and the same applies to short shoes and deep shoes. It is possible. In addition, the shape of the support bones in the sole body is the same as the elongated support bone shape described above. The shape is not limited to, but may be circular, triangular, square, polygonal, or any other shape that does not impede ventilation. Any shape is acceptable as long as it is possible.

[0030]

[Effect of the idea]

The device according to claim 1 of the present application has the inner sole (1) and the buried sole (2) as described above. Long and slender struts (3) and oval-shaped struts that are molded on both sides at the same time and have good ventilation. (3a) etc., and the hollow chamber (4) can be easily formed with a mold. I can do that. Therefore, there are many independent supporting bones that can be installed inside the hollow chamber (4). As a result, even better air permeability can be obtained. Insole (1) or buried bottom ( 2) is molded into one piece at the same time, so there is no need to cut them separately and glue them together. It is efficient and economical. Also, since it does not adhere, there is no need for adhesives, and there is no need for adhesives. No organic solvents are used, and the working environment is sanitary. Separate the supporting bones at the bottom of the burial (2) Since the shape can be made into The overall weight is also slightly lighter.

[0031] The device according to claim 2 has a middle sole (1), a hollow chamber ( 4) and a supporting bone (2), which has a supporting bone attached to the heel part that is attached to these. and a sole body (7) having a hollow chamber (4), a shoe cover (9) and a lining fabric (10). This is the case when used in rubber boots (A). Therefore, the moist air inside the shoe is absorbed by the midsole (1 ) and the ventilation hole (5) and hollow chamber (4) in the heel of the buried sole (2) to the heel of the sole body (8) into the hollow chamber (4), and from the untrodden part and treaded part of the buried bottom (2) by the pump action. It passes through the ventilation hole (5) in the sole (1), passes through the lining fabric (10), and enters the shoe. . Therefore, the volume of the hollow chamber (4) in the sole of the shoe is larger by the amount of the heel (8) of the sole body. This increases the amount of air passing through these layers, increasing the sweat-proofing effect. With this idea Since there is a hollow chamber (4) in the heel of the sole body, the shoe is lightweight and comfortable to wear.

[0032] The device according to claim 3 is the sole body (7) in the device according to claim 2. The non-stepping part has a communication groove (6) that communicates with the hollow chamber (4) in the heel part (8) of the sole body. A hollow chamber (4) and a long slender supporting bone (3) were provided to communicate with the hollow chamber (4). It is something. Therefore, the volume of the void in the communication groove (6) is large by the amount of the hollow chamber (4). Become. Therefore, the amount of air passing through them also increases, resulting in a corresponding increase in the amount of moist air. Since the air is exhausted outside, the sweat-proofing effect is further increased. As mentioned above, the volume of the void is large. This makes it even lighter, and the impact is better cushioned, making it easier to wear. It makes you feel good. The rest is the same as the above claims. further use It is economical as it requires less compounded rubber.

[Brief explanation of drawings]

FIG. 1 is an enlarged perspective view of the inner sole and the buried sole from the back side.

FIG. 2 is a perspective view of the inner sole and the buried sole from the front side.

FIG. 3 is a perspective view of a sole body in which a hollow chamber and a support bone are provided in the heel portion.

[Fig. 4] Partial notch of a rubber boot in which a sole body with a hollow chamber and a support bone is provided in the heel part is used, and the embedded sole is cut along line A-A in Fig. 1. FIG.

[Fig. 5] Partial notch of a rubber boot in which a sole body with a hollow chamber and a support bone is provided in the heel part is used, and the embedded sole is cut along the line B-B in Fig. 1. FIG.

FIG. 6 is a perspective view of a sole body in which a hollow chamber and a support bone are provided in the heel portion and the tread portion, and a communication groove is provided in the tread portion.

[Fig. 7] A case in which a sole body is used in which a hollow chamber and a support bone are provided in the heel part and the stepping part, and a communication groove is provided in the non-stepping part, and the buried sole is shown along the line A-A in Fig. 1. FIG. 3 is a partially cutaway vertical sectional view of the rubber boots in a cutaway state.

[Fig. 8] A case where a sole body is used that has a hollow chamber and a support bone in the heel part and the stepping part, and a communication groove in the non-stepping part, and the buried sole is shown along the line B-B in Fig. 1. FIG. 3 is a partially cutaway vertical sectional view of the rubber boots in a cutaway state.

[Explanation of symbols]

A Rubber boots 1 Insole 1a Part to be attached 2 Buried bottom 2a Peripheral process 3 Long and slender vertebrae 3' Projection 3″ overhang 3a Oval-shaped spine 4 Hollow chamber 5 Ventilation hole 6 Communication groove 7 Sole body 8 Sole body heel part 9. 10 Lining cloth

Claims (3)

[Scope of utility model registration request] Claim 1: At the part of the insole on the back side of the insole that is integrally molded at the same time, a hollow chamber having a support bone is provided in the heel part and the stepping part, respectively, so that the insides of each part communicate with each other. and a communication groove having a smaller cross-sectional area than the hollow chamber is provided in the unexplored portion between these to communicate with the hollow chamber,
A ventilated insole and an insole having breathability, characterized in that the insole is provided with a ventilation hole so as to communicate with the hollow chambers of the heel part and the stepping part of the insole. Claim 2: At the part of the insole on the back side of the insole that is integrally molded at the same time, a hollow chamber having a support bone is provided in the heel part and the stepping part, respectively, so that the insides of each part communicate with each other. A communication groove having a cross-sectional area smaller than that of the hollow chamber is provided in the unstepped part between these, and the hollow chamber is connected, and the hollow part of the heel part and the tread part of the buried sole is provided in the middle sole. Rubber shoes using a breathable midsole and a buried sole, characterized in that a ventilation hole is provided so as to communicate with the chamber, and a hollow chamber that communicates with each other and has a supporting bone is provided in the heel of the sole body. Claim 3: At the part of the insole on the back side of the insole that is integrally molded at the same time, a hollow chamber having a support bone is provided in the heel part and the stepping part, respectively, so that the insides thereof communicate with each other. A communication groove having a smaller cross-sectional area than the hollow chambers of the heel part and the treading part is provided in the intermediate non-stepping part to communicate the hollow chambers, and the midsole has a heel of the buried sole. A ventilation hole is provided in the sole body so as to communicate with the hollow chambers in the heel part and the treading part, and hollow chambers each having a support bone are provided in the heel part and the treading part in the sole body so that the insides thereof communicate with each other. A ventilated midsole and a buried sole are provided in the intermediate non-stepping part of the footbed and are connected to each other by providing a communication groove having a smaller cross-sectional area than the hollow chambers of the heel part and the stepping part. rubber shoes.