JPS61209603A - Shoe sole - 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 [Field of Industrial Application] The present invention relates to soles of running shoes, golf shoes, and other luggage.

[Prior art and its problems]

Conventionally, the soles of this type of shoes have been made with a columnar shape having a constant cross section from the base to the tip, or a columnar sole having a constant cross section from the base to the tip, as shown in FIGS. 87(a) and (1), for example. It is known that a large number of tapered elastic protrusions 2 protrude toward the tip.

However, in such soles, the elastic protrusions 2
In order to improve the slip resistance and abrasion resistance of the contact surface, it is desirable to form this contact surface as wide as possible, but in that case, each part of the protrusion 2 will become thicker overall, and the consumption of protrusion material will be reduced. As a result, the weight of the sole increases, and the rigidity of the protrusion 2 itself becomes large (this results in a decrease in its shock absorbing function, among other inconveniences).

Therefore, a shoe sole that solves this problem is disclosed in Japanese Utility Model Publication No. 59-11616. As shown in FIG. 7(0), this shoe sole has an elastic protrusion 2 formed between the sole covering part 1 and the ground contact part 3, which has a smaller cross-sectional area than the ground contact part 3 (forming a fin part 4). However, although this shoe sole solves the above problems, the formation of fins 4 on the elastic protrusions 2 makes manufacturing cumbersome and significantly increases manufacturing costs. There was a problem that it could not be supplied at an affordable price.

[Means for solving problems]

Therefore, in this invention, by forming grooves that divide the contact surface of the elastic protrusion into two or more parts, it is possible to improve the anti-slip property and wear resistance, and also to facilitate manufacturing and suppress the increase in cost. I made it possible to do this.

[Pointed example]

FIGS. 1(a) to 1(C) show an example of a shoe sole of the present invention, and reference numeral 11 in the figures indicates a sole fluid part. This bottom liquid part 11
On the lower surface of the
...is provided prominently. This elastic protrusion 12 has a cylindrical base end 13 protruding from the bottom liquid part 11 as shown in FIG.
4 are continuously formed integrally, and the outer surface of the grounding portion 14 serves as a grounding surface 15. A groove 16 is formed in this elastic protrusion 12. This groove 16
As shown in FIG. 1(c), the planar shape is approximately a cross, and the ground plane 15 is divided into four by the grooves 16.

Further, the depth of the groove 16 is such that it reaches nearly the lower surface of the bottom liquid section 11 in this example. The base end portion 13 may have a tapered cylindrical shape.

These elastic protrusions 12 may be provided on the entire surface of the VC floor covering 1 as shown in FIG. Alternatively, the elastic projections 12 may be arranged regularly as shown in FIG. 1(a), or the distribution density may be changed. They may be arranged irregularly according to rules, or may be arranged so that a suitable pattern or design appears.

Further, the material of the elastic protrusion 12 may be the same as or different from the material of the bottom liquid part 11, and has higher wear resistance than the bottom liquid part 11.
By using a material with excellent abrasion characteristics and shock absorption properties, the abrasion resistance, anti-slip properties, and cushioning functions of the elastic projections 12 can be improved, and the durability of the sole can be increased.

[Effect]

In a shoe sole provided with such elastic protrusions 12..., by forming the grooves 16, each divided portion of the elastic protrusions 12 has high elasticity in the vertical and lateral directions.
As the IS absorption function increases, the anti-slip function is also greatly improved. *It grips the ground with only a slight pressure of stepping on it, and has excellent drainage and drainage properties, making it extremely anti-slip on wet roads.

In addition, since the grooves 16 are formed radially, there is little anisotropy.
This facilitates the functional design of the sole of the shoe, and reduces the feeling of the elastic protrusion 12 itself rising when stepped on.

Furthermore, while the elastic protrusion 12 reliably grips the ground as described above with a slight trampling pressure, when a large trampling pressure is applied, the elastic protrusion 12 causes excessive p1 due to the cooperative action of the divided parts. This prevents deformation and makes it #J resistant! Excellent toughness.

Furthermore, even if the elastic protrusion 12 receives an external force from an oblique direction, the groove 16 facilitates deformation of that portion, thereby preventing phenomena such as chipping ((the life of the shoe sole can be extended).

[Other Examples]

Figures 2 to 6 show other examples of the elastic protrusions in the sole of the present invention, and the same components as in the example shown in Figure 1 are given the same reference numerals and their explanations are omitted. .

The elastic protrusion 12 shown in FIG. 2 has a cross-sectional shape different from that of the previous example. In this elastic protrusion 12, a hemispherical grounding part 14 is integrally formed directly from the bottom fluid part 11, and the outer surface of the grounding part 14 serves as a grounding surface 15. Similarly, the depth of this groove 16 is set near the bottom surface of the bottom liquid part 11 (
It has reached this point.

3 and 4 show examples of variations in the planar shape of the connecting portion between the bottom fluid part 11 and the grounding part 14 of the elastic protrusion 12, and the difference shown in Fig. 3 is , is the shape of a circle cut by four chords smaller than its diameter, and the one shown in Figure 4 is a hexagon. In addition, the shape may be a pentagon, a hexagon, or a combination of a shell and a polygon other than that shown in FIG. 3.

In addition, Figs. 5(a) to (0) and Figs. 6(a) to (0)
) all show modifications of the planar shape of the groove I6 of the elastic protrusion 12. The planar shape of the groove 16 is determined according to the purpose and function of the shoe or the size of the elastic protrusion 12 as shown in FIG.
The groove 16 divided into two as shown in a) may be divided into eight as shown in FIG. 5(b), or may be divided into twelve or more as shown in the WCS diagram (c). When the elastic protrusion 12 is small, it is preferable to have fewer divisions, and when it is large, it is preferable to have many divisions.

In addition, in addition to the grooves 16 that are almost symmetrically divided into equal parts as shown in FIGS. 5(a) to (0), grooves 16 that are asymmetrically divided into equal parts as shown in FIGS. 6(a) to (C) are formed. It's okay.

The depth and width of this groove 16 are important in obtaining properties such as appropriate shock absorption, anti-slip properties, and abrasion resistance. The height is preferably in the range of 30 to 150 cm. If it is less than 30 grooves, it will be shallow and the above characteristics cannot be obtained sufficiently, and furthermore, the groove will become 16 mm after being worn for a short period of time.
The effect of forming 1501 may disappear, and if it exceeds 1501, it may lead to insufficient strength, which may be inconvenient.

The width of the groove 16 is Q, preferably in the range of 5 to 3 m, and Q, 5a
If the width is less than uc, the effect of forming the groove 14 will not be obtained substantially, and if it exceeds 3, the strength will be insufficient, which is disadvantageous.

Among the various modifications described above, the most preferable combination is selected as appropriate, taking into account the use, function, design, etc. of the shoe.

[Manufacturing method]

The sole of the present invention is made of an elastic body of rubber such as natural rubber or synthetic rubber, or synthetic resin such as polyurethane, polyvinyl chloride, ethylene vinyl acetate, or polyethylene, and is manufactured by compression molding using a normal press or injection molding. Manufactured. The shape of the elastic protrusion 12 was molded in accordance with 1986-116.
Since it does not have an undercut like the one in Publication No. 16, it is easy to manufacture by extrusion molding. In addition, when changing the material of the elastic protrusion 12 from that of the bottom cover part 11, a different material of rubber is injected in advance into the part of the cavity corresponding to the elastic protrusion of the mold to form the bottom cover part. Alternatively, in the case of synthetic resin, it can be easily molded using a two-color molding method. Therefore, since this sole can be manufactured by a conventional molding method, the manufacturing cost does not increase.

〔Effect of the invention〕

As explained above, the sole of the present invention has a large number of elastic protrusions with grooves that divide the ground contact surface into two or more, so it has a high shock absorption function (not only on dry roads but also on dry roads). It exhibits high anti-slip properties even on wet roads.It also has a low feeling of sticking up (and has good abrasion resistance).

Therefore, this sole is particularly suitable for use in running shoes, jogging shoes, non-spike type golf shoes, etc., and can also be used in general everyday shoes.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 shows an example of the sole of the present invention, in which (a) is a bottom view of the sole, (b) is a sectional view of the elastic protrusion, and (0) is a cross-sectional view of the elastic protrusion. A plan view, FIG. 2 is a sectional view showing another example of the elastic protrusion, FIGS. 3 and 4 are schematic sectional views showing the external shape of the connecting part of the elastic protrusion, and FIGS. 0) and FIGS. 6(a) to (c) are both plan views showing the planar shape of the grooves of the elastic protrusions, and FIGS. 7(a) to (c) are all examples of conventional elastic protrusions on soles. FIG. 11... Bottom cover 12... Elastic protrusion 15... Ground plane 16... Groove Applicant Kinsha Co., Ltd. Bridgestone Figure 1 (Q) (C ) Figure 6 (a) (b) (c) Figure 7 (Q) and (b) (C)

Claims (1)

[Claims] A shoe sole characterized in that a large number of elastic protrusions are provided on the lower surface of the sole of the shoe, and each of these elastic protrusions is provided with a groove that divides the contact surface of the protrusion into two or more.