JPS62233101A - Sandal made of synthetic resin - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to synthetic resin sandals.

In particular, the present invention relates to sandals made of foamed synthetic resin that are comfortable to wear and suitable for use in areas with water such as rivers, lakes, or seashores.

(Conventional technique v#) Foamed synthetic resin sandals are already in use.

The one used is a sandal stand made of a flat, sole-shaped object made of foamed synthetic resin, with a thong attached to the top of the stand, and the rest of the sandal stand exposed. In this sandal table, the entire side surface of the table forming the periphery was oriented perpendicular to the bottom surface of the table. The reason for this is that since sandal boards are made of foam, a large synthetic resin foam board is first made, and then a sole-shaped piece is cut out of the foam board. This is because it is easy to cut perpendicular to a plane and the material is efficient.

In the case of shoes, the side surface constituting the periphery of a footwear stand is sloped to serve as a footwear stand for lower clothing. However, since shoe stands were often made by placing each shoe in a mold from the beginning and molding them, it was easy to make the shoe stand into the shape of a lower garment. In addition, shoe stands were sometimes cut out of a board, but in this case a molded one was the standard, so it was sometimes made in the shape of a lower garment. However, since the manufacturing method used to manufacture sandal stands was to cut them out of a foamed board as described above, no attempt was made to make them into a lower garment shape.

(Problems to be Solved by the Invention) The inventor discovered that because the conventional sandal base made of synthetic resin foam has the side surfaces forming its periphery perpendicular to the bottom surface, When I wore the sandal platform, I noticed that it was unstable and uncomfortable. The inventor also noticed that because the bottom surface of the sandal base is one flat surface, the toes tend to get caught on other objects, and the heel does not land well, making it uncomfortable to wear. Furthermore, the inventor discovered that when wearing conventional sandals underwater and moving to a place where there is no water, the drainage from the sandal base is poor and water accumulates on the sandal base for a while, so when using conventional sandals as marine sandals, It was also found that this causes some inconvenience.

This invention was created in an attempt to improve these drawbacks.

(Means for Solving the Problem) The inventor found that by slightly inclining the sides of a sandal base made of synthetic resin foam to give it the shape of a lower garment, the sandals would be more stable, and therefore I found that it is more comfortable to wear.

In particular, it has been found that if the slope of the side surfaces is uniform at 70 to 85 degrees with respect to the bottom surface, the comfort of wearing the shoe becomes significantly better and the shoe feels more stable when used underwater.

In addition, the inventor discovered that the lower surface of the toe part of the sandal base is cut out with a slight inclination upward at the tip, and the rear end of the heel part, which is away from the heel, is cut out with a large inclination upward in the backward direction, thereby improving the comfort of wearing. I discovered that. especially,
The sloping surface created by the notch at the toe part shall have a gentle slope over a wide range starting from the tip and ending at the thong attachment part, while the sloping surface created by the notch at the heel part shall start from the rear end. It has been noticed that the comfort of the shoe is particularly improved when the shoe has a steep slope within a narrow range that extends forward by a fraction of the length of the heel.

Furthermore, the inventor found that if a plurality of small holes were formed in the sandal base in a specific manner, water drainage from the sandals would be improved when the sandals were used underwater, and the cushioning properties would also be improved, making the sandals easier to use. I found it to be convenient. A specific state is that a small hole opens on the top surface of the table, but this hole does not reach the bottom surface of the table and changes direction inside the table.
This means that it opens on the side of the table.

This invention provides a sandal in which a thong is simply attached to the upper surface of a sole-shaped, almost flat sandal base made of foamed resin, leaving the rest of the upper surface exposed. The present invention relates to a synthetic resin sandal characterized in that the entire base is inclined with respect to the lower surface of the base so that the base is a lower surface, and the angle of inclination is uniform from 70 to 85 degrees with respect to the lower surface.

In addition, another invention related to the above-mentioned invention is that, in the above-mentioned synthetic resin sandals, the bottom surface of the sandal base is cut out within a range starting from the tip and ending at the thong attachment part, and the bottom surface of the base is cut out to form a toe part. Relating to synthetic resin sandals characterized by forming a flat slope that slopes gently, and by cutting out the rear end of the lower surface of the heel to form a flat slope that slopes significantly upward at the rear. It is something.

Furthermore, another invention related to the above invention is that in the above synthetic resin sandals, a plurality of small holes directed downward are bored in the upper surface of the part of the sandal base beyond the base of the sandal base. This invention relates to a synthetic resin sandal characterized by changing the direction of the small hole inside and opening the small hole on the side surface of the base.

(Example) An example of implementation of the present invention will be described below based on the drawings. FIG. 1 is a partially cutaway perspective view of a synthetic resin sandal according to the present invention. FIG. 2 is a side view of another synthetic resin sandal according to the present invention, and FIG. 3 is a plan view thereof.

In FIG. 1, A is a sandal stand and B is a thong. Sandal stand A is approximately flat in the shape of a sole, and is made of foamed synthetic resin. Only the thong B is attached to the top surface 1 of the sandal stand A, and the rest of the top surface 1
They are exposed and form sandals. The upper surface 1 of the sandal base A has a slope that gradually decreases in thickness from the heel to the toe, and therefore gradually becomes lower.
The lower surface 3 of the sandal stand A is mostly flat and forms one plane.

The sandals shown in Figure 1 are unique in that the side surface 2 that defines the periphery of the sandal base A is sloped over the entire area with respect to the bottom surface 8 of the base, and as a result, the sandal base A has the shape of a genin. It has a shape. Its inclination is such that the angle α between the side surface 2 and the lower surface 8 forms an acute angle of 70 to 85 degrees.

Since the sandal stand A is made of synthetic resin foam, the alloy body is flexible and highly elastic. Also,
Since the sandal base A is relatively thick, if the side surface 2 is sloped, this slope will make a big difference both in terms of appearance and comfort. In other words, unlike shoes, the top surface of the platform is exposed with sandals, so the platform needs to be stable in order for the feet to change their positions freely, but with sandals like this, the stability of the platform is suddenly reduced. It becomes larger and more comfortable to wear. According to experimental results, it is appropriate to set the angle α within the range of 70 to 85 degrees.

Furthermore, in the sandal shown in FIG. 1, most of the lower surface 8 forms a flat plane, but the toe part and the heel part form an inclined plane. In other words, in the toe and heel parts, the foam originally existed up to the position shown by the dotted line, and the whole formed one plane that continued to the lower surface 3, but the toe part and the heel part The result is that a part of the slanted surface 4 and the slanted surface 5 are cut out.

The sloped surface 4 located on the lower side of the toe part is formed so that its length in the longitudinal direction is at least one-tenth of the length of the base, starting from the tip of the base and ending at the attachment part of the thong. There is. The inclined surface 4 has an upward slope and forms a substantially flat surface as a whole.

Further, the slope of the sloped surface 4 is gentle, the height of the notch is less than half the original thickness, and the sloped surface has a relatively large area. On the other hand, the sloped surface 5 starts from the rear end of the table, the height of the notch is higher than the height of the toe part, and the length in the longitudinal direction is less than two-eighths of the length of the sloped surface 4 of the toe part, and the height of the notch is higher than the height of the toe part. It has an upward slope and forms a substantially flat surface as a whole. Further, the slope of the slope 5 is steep, and the slope 5 has a narrower area than the slope 4.

The sandals shown in FIG. 1 are provided with a sloped surface 4 at the toe portion of the sandal base and a sloped surface 5 at the heel portion, making it easy to walk on. In particular, when walking on the bottom of the water, there is less resistance, the toes are less likely to get caught when walking, and conversely, the heel lands more stably, making it easier to walk.

Furthermore, the sandal shown in FIG. 1 is characterized in that a plurality of small holes 6 extending downward are formed in the upper surface 1 of the base beyond the soil footing. Moreover, the small hole 6 does not reach the bottom surface of the sandal base, but is connected to a small hole 7 extending laterally inside the sandal base, and the small hole 7 opens on the side surface z of the base.

The small holes 6 thus serve to cause the fluid on the upper surface l to flow to the side surface 2.

The small holes 6 and 7 have approximately the same diameter.

The size of the small hole is 1 to 10 m, preferably 3 to 6 fl, but as long as water can flow through it, it is desirable that it be small. Further, the small holes are provided with a gap larger than the diameter of the small hole between adjacent small holes.

Among these, it is desirable to space the holes at intervals of at least twice the diameter of the small holes, more preferably at least four times the diameter of the small holes. The length of the small hole 6 extending downward is one-third or more of the thickness of the platform A. In addition, the small holes 7 are made by stacking multiple layers of foam boards when making a sandal table, and for example, the small holes 7 are formed in the lower surface of the upper layer, the upper surface or lower surface of the middle layer, or the upper surface of the lower layer, and are made in the horizontal direction. Preferably, it is made by digging a trench.

The sandals shown in Figure 1 are comfortable to wear because when you walk on the bottom of the water, water does not collect on the top surface when you go out to a place where there is no water. In other words, when you reach a place where there is no water, the water on the sandal base immediately flows out from the small hole 6 to the small hole 7, so that no water accumulates on the base, and the soles of your feet and the sandal base are in direct contact with each other. As a result, the foot does not slip, giving a sense of stability, and therefore providing a comfortable feeling when worn. In addition, since the small holes 6 and 7 are both provided in the area beyond the soil footing, the elasticity of the tip of the sandal base is reduced, which allows the tip to bend freely, making it easy to wear. It will also make you feel better. Furthermore, since the small hole is opened on the side surface of the table, the abrasion resistance of the underside of the table is not reduced, and therefore durability is maintained.

The sandals shown in Figures 2 and 3 are almost the same as those shown in 1st rgJ. The difference is that the sandal stand A is made by pasting together an upper layer P, a middle layer Q, and a lower layer R. Of these, the lower layer R is made of a non-foamed or low-foamed synthetic resin layer.

The relationship between the inclined surfaces 4 and 5 will be explained with reference to FIGS. 2 and 8 as follows. The inclined surface 4 is a flat surface with an upward slope, and forms a notch angle β with the original lower surface 3. Further, the inclined surface 5 forms a notch angle 6 with the original plane 3 even though it is a rear upward plane. Notch angle β is 5~
20 degrees, and the notch angle t is 8 to 45 degrees. Notch angle β
is smaller than the notch angle, and is preferably about half of the notch angle l.

(Effects of the Invention) According to the present invention, the sandal table is made of foamed resin in the shape of a sole, and the entire side surface thereof is inclined with respect to the lower surface of the table to form a lower garment, and the angle of inclination is 70 to 70 degrees with respect to the lower surface. Since it has a uniform angle of 85 degrees, the sandal table is stable and comfortable to wear even if the position of the foot changes freely on the sandal table. In addition, the lower surfaces of the toe and heel are cut out to form a flat slope with a small slope at the toe.
At the same time, the lower surface of the heel was cut out to form a flat slope with a large slope, so there is less resistance in the water.
The toes are less likely to get caught, and the heel is more stable, making it easier to walk. Furthermore, we drilled multiple small holes on the top surface of the platform beyond the soil footing, changed the orientation of these small holes within the platform, and opened them on the side of the platform. Water no longer collects on the top surface, which gives it a sense of stability and makes it comfortable to wear. Additionally, since small holes are made in the area beyond the soil footing, the elasticity of this area is reduced, making it easier to follow the movement of the foot, making it more comfortable to wear. Furthermore, since the small holes are opened on the side surface of the table, the abrasion resistance of the underside of the table is not reduced, and therefore durability is maintained. Since the sandals according to the present invention provide such advantages, the convenience of use is greatly improved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a synthetic resin sandal according to the present invention. FIG. 2 is a side view of another synthetic resin sandal according to the present invention, and FIG. 3 is a plan view thereof. In the figure, A is the sandal base, B is the thong, 1 is the top surface of the sandal base, 2 is the same side surface, 3 is the bottom surface, 4 is the sloped surface of the toe part, 5 is the sloped surface of the heel part, 6 and 7 are the small It is a hole. Patent applicant Nishi 1) Shigeo Figure 1 Figure 2

Claims (1)

[Claims] 1. In a sandal in which a thong is attached to the upper surface of a sole-shaped, almost flat sandal base made of foamed synthetic resin, and the rest of the upper surface is exposed, the periphery of the sandal base is The entire side surface of the table is inclined with respect to the lower surface of the table to make the table wider, and the angle of inclination is 70 to 80 degrees with respect to the lower surface.
Synthetic resin sandals characterized by a uniform 5 degree angle. 2. In sandals where a thong is attached to the top surface of a nearly flat sole-shaped sandal base made of foamed resin, and the rest of the top surface is exposed, the entire side surface that forms the periphery of the sandal base is covered with a base. The base is made wide by tilting it against the bottom surface, and the angle of inclination is uniform between 70 and 85 degrees with respect to the bottom surface. The lower surface is cut out to form a flat slope at the toe that slopes gently upward, and the rear end of the lower heel is cut out to form a flat slope that slopes significantly upward at the back. Synthetic resin sandals. 3. In sandals that are made of foamed resin and are formed by simply attaching a thong or instep to the surface of a nearly flat sole-shaped sandal base, leaving the rest exposed, the side surface that forms the periphery of the sandal base. The entire surface of the platform is tilted toward the bottom surface of the platform to make the platform wide at the bottom, and the angle of inclination is uniform between 70 and 85 degrees. A synthetic resin sandal characterized by having a plurality of small holes drilled therein, the direction of the small hole being changed inside the footwear stand, and the small hole being opened on the side surface of the footwear stand.