JP2002017404A - Sole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sole for boots, which is slip-proof even when a foot is loosely fit in. SOLUTION: Sole design patterns 1A, 1B of this sole with the sole design patterns 1A, 1B on the tread part Aa and the heel part Ab are made into a lateral stripe pattern by placing bar groove parts 2,... with right and left opened end parts and projected bar parts 3,... with a flat tread face 3a alternately in the longitudinal direction of the sole and the bar groove parts 2, 2 are mutually communicated by longitudinal bar groove parts 4 to split the projected bar parts 3 into at least not fewer than one pair to constitute the projected bar part 3. A pattern part 1A' constituted by alternately placing a cross projecting bar part 6 placed in a direction crossing the projected bar part 3 or the bar groove part 2 on the sole design pattern 1A and a cross bar groove part 7 communicating with the bar groove part 2 is set to an arch part Ac existing in between the tread part Aa and the heel part Ab in the sole design pattern 1A of the tread part Aa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole mainly applied to a slip-resistant injection-molded boot used in a fishery processing plant or a food factory.

[0002]

2. Description of the Related Art Injection molded boots made of polyvinyl chloride have been used by those who work in fisheries processing plants and food factories because of their excellent oil resistance. Various measures have been devised to prevent falls on wet floors. For example, the addition of more flexibility and elasticity by using polyvinyl chloride of high polymerization degree in the bottom formulation,
A foamed cross-linked bottom of an ethylene-vinyl acetate copolymer has been invented later.

[0003] In addition, in the case of boots other than injection-molded boots, those which are intended to prevent slippage by mixing fibrous materials such as glass fibers, woven fabrics and non-woven fabrics, ceramics, etc., or directly into fibrous boots, Some of them were attached to the bottom.

[0004]

However, glass fibers and ceramics can damage stainless steel floors and the like, and the methods of increasing flexibility and foaming bottom certainly do not provide frictional resistance between the sole contact surface and the floor surface. Although it was difficult to slide up, there was no anti-slip effect enough to be able to walk stably.

The present invention has been made by focusing on such a drawback of the conventional example.

[0006]

Means for Solving the Problems The sole design pattern of a shoe sole having a sole design pattern provided on a tread portion and a heel portion,
Grooves with open left and right ends, and ridges with a smooth contact surface are alternately arranged in the forward and backward directions of the shoe sole to form a horizontal stripe pattern, and at least one pair of the ridges The vertical groove groove is divided into the vertical groove grooves so that the groove grooves communicate with each other, and the bottom of the stomach portion is located near the tread portion between the stomping portion and the heel portion in the bottom design pattern. The design pattern is provided with a pattern portion formed by alternately arranging intersecting ridges arranged in a direction intersecting with the ridges or grooves and intersecting ridges communicating with the grooves.

The sole according to the present invention is made of polyvinyl chloride 10
It is desirable to use an oil-resistant material in which the total amount of the plasticizer is 100 to 120 parts by weight with respect to 0 part by weight, and 40 to 80 parts by weight thereof is mixed with a polyester plasticizer. The softer the better, but it is desirable to use HDA 50-60 (JIS K 7215) in consideration of abrasion resistance.
As described above, this is realized by setting the total amount of the plasticizer to 100 to 120 parts by weight with respect to 100 parts by weight of polyvinyl chloride.
The oil resistance is enhanced by using 40 to 80 parts by weight of the polyester plasticizer.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of a shoe sole according to the present invention,
1 is a front view and FIG. 2 is a side view.

The sole A of the embodiment is applied to an injection-molded boot that is formed integrally with the upper part, and is composed of 100 parts by weight of polyvinyl chloride, 100 parts by weight of a total plasticizer, and 5 parts of a stabilizer.
It is molded using a material consisting of parts by weight according to a conventional method.

Further, the bottom surface of the sole A is formed with a stepped portion Aa, a heel portion Ab, and a stepped portion A interposed therebetween.
The bottom design pattern 1A, 1B is provided in the whole area of each part Aa, Ab in the step part Aa and the heel part Ab.

The sole design patterns 1A and 1B are formed by alternately arranging groove portions 2, which are open at both left and right ends, and projecting ridge portions 3, having a smooth contact surface 3a, in the forward and backward directions of the sole A. Are formed in a horizontal stripe pattern, and the grooves 2 are connected to each other by vertical grooves 4 dividing the protrusions 3 into a pair or more.

The groove 2 is provided to prevent the stepped portion Aa and the heel portion Ab from being bent when walking due to the presence of a so-called bottom design pattern. (The ridges 3 arranged along the grooves 2 are inevitably
And the direction is the same), but in a strict sense, it is not necessary to arrange them in a direction perpendicular to the direction. On the other hand, since the groove 2 functions as a space for taking in water or oil on the floor surface which causes slippage during walking, it should be provided with a certain width or more to fulfill the function.

The protruding ridge 3 increases the frictional force with the bottom surface by making the grounding surface 3a smooth, and also obtains a scratching force by the edge portion (in the embodiment, approximately 90 ° in cross section).

Accordingly, the longer the protruding ridge portion 3 is, the more the anti-slip effect can be expected. However, on the other hand, the water or oil stays in the groove portion 2 interposed between the protruding ridge portions 3 and the anti-slip effect is reduced. Therefore, the ridge 3 is divided into two or three by providing the vertical groove 4.

The vertical groove 4 removes water and oil staying in the groove 2 and divides the ridge 3 so that each of the divided ridges 3 has independent mobility. The load on the bottom design caused by the load movement during walking (heel rear end-heel outside-step outside-stepping part-thumb ball-toe) is locally captured, and the load is concentrated, causing frictional force and scratching Power is increasing.

The bottom design pattern 1A of the stepped portion Aa has a pattern portion 1A 'which is not included in the bottom design pattern 1B of the heel portion Ab.

The pattern portion 1A 'is provided from the stepped portion Ac in the bottom design pattern 1A, and extends in a direction crossing the ridges 3 to the groove 2 constituting the bottom design pattern 1A. The crossed protruding ridges 6 and the crossed ridges 7 communicating with the ridges 2 are alternately arranged, and the anti-slip effect in the left-right direction with respect to the front-rear direction is expected by the direction thereof. The part 1A 'is constituted.

The cross ridge 6 and the cross groove 7 are different from the ridge 3 and the groove 2 only in the directionality, and the remaining points are configured in the same manner.

Examples Comparative tests on prototypes are shown below. Sample name Friction force F (kg) Friction coefficient (μ) Bottom design pattern Prototype 6.89 0.86 Width of ridge and cross ridge 6 mm each, Width of groove and cross groove 3 mm Each General product 4.22 0.53 Conventional design pattern Test conditions Running surface: Oil is applied to stainless steel (salad oil). Load: A load of 8.0 kg is placed on the boot. Measure the friction force with the friction tester under the above conditions. Displays the average of each maximum value of three tests.

Although the present invention can be applied to, for example, sneaker-type shoe soles (press-formed using rubber as a material), the present invention is suitable for use in shoes with loose feet, such as boots. .

[0021]

According to the present invention, in the case of boots in which the foot is looser than ordinary boots, the boot position and the sole design pattern position often do not match just because the boot does not fit the foot, and slipping is likely to occur. However, according to the present invention, since the configuration is as described above, the bottom design and the pattern area in which a grip force can be obtained by a series of walking motions such as grounding, stepping, stepping kick, and walking during walking are broadened and loose. It is possible to provide boots that can obtain high slip resistance even in a foot.

[Brief description of the drawings]

FIG. 1 is a front view.

FIG. 2 is a side view.

[Explanation of symbols]

 Aa Tread portion Ab Heel portion Ac Footstep portion 1A Bottom design pattern portion 1A 'Pattern portion 2 groove portion 3 Projection 3a Grounding surface 4 Vertical groove 6 Cross projection 7 Cross intersection groove

Claims (1)

[Claims] 1. A shoe sole having a sole design pattern provided on a stomach part and a heel part, the sole design pattern is formed by using a groove part having left and right ends opened and a ridge part having a smooth ground contact surface. The stripes are alternately arranged in the front-rear direction to form a horizontal stripe pattern, and the ridges are formed so as to communicate with each other by vertical ridges dividing at least one pair or more, and Near the stepped portion interposed between the tread portion and the heel portion in the bottom design pattern, a crossed ridge portion arranged in a direction crossing the ridge portion or the groove portion of the bottom design pattern. A shoe sole provided with a pattern portion formed by alternately arranging cross streak portions communicating with the streak portions.