JP3451205B2 - Slip-resistant soles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe slip resistant sole.
Things. [0002] 2. Description of the Related Art Generally, slip phenomenon is replaced by frictional force.
It is quantified and evaluated. Friction is static friction and dynamic friction
The same applies to slippage of footwear. What is static friction?
If you say, it is the beginning of slipping, for example, it is difficult to slip when landing
Used to evaluate In contrast, dynamic friction is
When evaluating the stop performance and the difficulty of stopping when standing
Is used for static friction and dynamic friction as a set
It can be said that the shoes are slip-resistant. [0003] Materials used as soles for footwear include:
Rubber, polyurethane, polyvinyl chloride, thermoplastic elastomer
Tomer, ethylene vinyl acetate (EVA), etc.
However, the presence of oil, etc., requires
The sole material of safety shoes, often used in different environments, is synthetic
Rubber and polyurethane (PU) are the mainstream. [0004] [Problems to be Solved by the Invention] Here, static rubbing of rubber
Looking at friction and kinetic friction, the friction coefficient of rubber is generally
The coefficient of static friction is larger than the coefficient of dynamic friction. In other words, go
Is difficult to slide out, but when it slides out, it is hard to stop
That is to say. Therefore, in the case of rubber bottom, the dynamic friction coefficient
How to increase the shoe size develops a shoe sole with excellent slip resistance
Was the point. [0005] Therefore, conventionally, the hardness of the bottom is reduced by blending.
To increase flexibility and thereby increase frictional resistance,
FIG. 9 and FIG. 10 show the bottom design pattern of the ground contact surface, for example.
As shown in FIG. 11 and FIG.
As shown in Fig. 2, make a design such as "drive-in design"
But static friction, especially on oily floors,
Footwear with excellent slip resistance that satisfies both dynamic friction
I didn't. For example, in the single-layer bottom 1 shown in FIG.
If it is low (soft),
Lock design 2 deformedAwakenKeep catching the floor 37
I can't do it and slip. Further, as shown in FIGS.
The “cog design” pattern can be easily changed as shown in FIG.
Because it will be shaped, the floor 37 will not
I slip. Further, as shown in FIG. 11 and FIG.
More irregularities on top of designOf "drive-in design" 38
In the case of a design pattern with a
When a fluid such as oil is present, these membranes are used as shown in FIG.
Can't cut the floor 37
Will be gone. In the present invention, a water film or an oil film
Even if the block design is not deformed,
Provides a slip-resistant sole that cuts the membrane and keeps the floor firmly caught
It is intended to be. [0008] Means for Solving the Problems To achieve the above object
In order for the present invention, each of polygons, circles, etc. is independent
It has a block design, and when they gather, the pattern of the entire shoe sole
A skid-resistant shoe sole forming a skin, the thinnest part of the shoe sole
Has a thickness of 3 mm to 8 mm, and
Rubber with a hardness of ~ 64 (JIS-A 20 ° C)
The block design is made of polyvinyl chloride and polyurethane
The top surface of the ground is flat with no irregularities
(Plane), and the design height of the block design is 1
mm to 7 mm, and the design gradient is 0 to 3 degrees, and
The minimum size of the design pattern (ground plane) is 2mm to 8m
m, and the block design is unlikely to collapse and falls down
The thickness of the thinnest part of the shoe sole so that it has strength that is difficult
The shoe sole grounding portion having a thickness of 3 mm to 8 mm
It is characterized by having been done. [0009] BEST MODE FOR CARRYING OUT THE INVENTION The material for forming the slip resistant sole is
System, polyvinyl chloride, and polyurethane.
Should be 54 to 62 (JIS-A 20 ° C).
Even if it is too soft against fluid friction such as oily floor,
Even if it is too much, the anti-slip effect decreases. If it is less than 54,
The corner of the lock design disappears and escapes. 6
If it exceeds 2, the floor cannot be captured. That is,
Is worse. The thickness of the thinnest part of the sole is 3mm or more and 8
mm or less. If less than 3mm, above the ground contact
InsoleOf hardnessHas an effect. If it is 3mm or more, medium
bottomofDemonstrates excellent slip resistance only at the ground contact area regardless of hardness
Can be If it exceeds 8 mm, the weight increases,
Not only does it have less flexibility, it can withstand flexing while wearing
And cracks at the bottom are likely to occur, which may cause practical problems.
And many. [0010]The shape of the contact surface of the sole contact point is polygon
Independent block design patterns such as shapes and circles
They collectively form a pattern of the entire shoe sole,
It is difficult for the block design to collapse and fall down
The thickness of the thinnest part of the sole is 3 m so as to have strength
m or more and 8 mm or less, constituting a single-layer bottom. Bro
DesignDesign height, design gradient, minimum dimension (width) are mutually
And the top of the block design is flat
It is better to have (flat) and no uneven pattern. Block design
The height needs to be 1 mm to 7 mm. Less than 1mm
Is a block design by applying a load while wearing
Is flat and the entire bottom is flat without block design
As it is no different from the bottom and the catch is gone,
It becomes slippery. In addition, if it exceeds 7 mm,
The craftsman becomes too high and becomes unstable. [0011] The design gradient of the block design is 0 to 3 degrees
Is good. 0 degrees is a right angle, but there is no catch
Comes, the stop performance is improved. If it exceeds 3 degrees,
Because the edge of the design sleeps, there is no catch
And the stop performance is reduced. Rigidity suitable for block designs
This is the gradient required to have sex. The minimum dimension of the design pattern is, for example,
If it is a circular block design, its diameter or square shape
In other words, it refers to the shortest distance between two opposing sides. This minimum dimension is
It is necessary to be 2 mm or more and 8 mm or less. 2mm not
When it is full, the "saw saw design" shown in FIGS.
A similar phenomenon occurs. If it exceeds 8mm,
Contact area becomes too large and becomes the same as non-design
Would. In addition, the design pattern, even the entire bottom
It may be partial, such as an attached central portion and a heel portion. On the soles,
Since there is a curved curve to the side, it can be
As long as the part that touches is secured, it is the same even if it is not the whole bottom
Effects can be obtained. [0013] In the structure of the shoe sole,
The rock design itself is flexible and captures the floor
It is better to have a structure that does not release. Hang on block design
Block design does not collapse when force is applied from the vertical direction
Need to transmit power to the floor. Also, block
When a force is applied to the design from the side, the block design
Does not deform (does not fall), even if you start sliding, catch the floor
We need to continue. To achieve this, the hardness of the grounding part and the thinnest
The thickness of the part is an important factor. In the shoe sole according to the embodiment of the present invention,
Is a block design even if there is a fluid such as water or oil on the floor.
Cut these membranes without deforming them,
I can keep catching it. [0015] DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to FIGS.
To explain the embodiment, in FIG.From the grounding section 12
Bottom layerThe shoe soles are 54-62 (JIS-
A 20 ° C) rubber, polyvinyl chloride,
The thickness of the thinnest part 8 shown in FIGS.
3mm or more and 8mm or less, excluding the stepped part 9 on the shoe bottom
GroundsurfaceHas a small rectangular block design 10FIG.
As shownBlocks arranged along alternately oblique lines
It is formed so as to have a lock design pattern 11.
The midsole 12A is made of a different material
12 so that it directly contacts the foot on the upper surface (inner side of the shoe)
(And may also have an insole on the top)
It is adhered and integrated with the part 12 to form a bottom. Slip-resistant sole 7ToAs shown in FIG.
And moldInThe material of the grounding part 12 is rubber, poly salt
Vinyl chloride or polyurethane whose hardness is 54 to 62
(JIS-A 20 ° C). The block design pattern 11 is shown in FIG.
FIG.The design height 14 shown in Fig. Is 1mm or more and 7mm or less,
The design gradient 15 shown in FIG.as well asIn FIG.
The minimum dimension 16 shown is between 2 mm and 8 mm,
Is flat without uneven patterns. In FIG. 2, 17 isFormed as one layer bottom
WasThe shoe sole is made of the same material as that of the shoe sole 7 described above.
Fig. 3And FIG.Thickness of the thinnest part 8 shown in 3m is 3m
not less than 8 mm and not more than 8 mm
At the end 19, small square block designs 20 are equally spaced
A plurality of block design rows 21 arranged in a row
In the middle between the toe portion 18 and the non-stepped portion 22,
Eight block designs 23 bent in the shape of "he"
Provided with a gap, on both sides of the block design 23,
A parallelogram that bites into each of these intervals,
7 block designs 25 each having two grooves 24, 2
5 outside the block designs 25, 25.
It is a triangle that bites into these intervals, and one at the top
Four block designs 27, 27 each having a groove 26 are provided.
, Block design 27, position close to 27, and toe
The distance between the block designs 24, 24 on the 18 side and the non-step section 22 side
Square from the biting position to the side edge of the shoe sole 17
7 blocks each having one groove 28 at the top.
Design 29, 29 (block design 29 on the non-stepped portion 22 side,
Another groove 30, 30 is added to the top of 29.
You. ) Is provided at the portion between the heel rear end portion 19 and the non-stepped portion 22.
Is provided with a depression 31 in the center, and slip-resistant from both sides of the depression 31
It is a square that reaches the side edge of the sole 17 and has one groove at the top.
Provide three block designs 33, 33 each having 32
Formed to have a block design pattern 34
I get it. The groove 2 of the block design pattern 34
In the case of a two-stage design having 4, 26, 28, 30, 32
Design height35And minimum dimensions36Is the communication shown in FIGS. 6 and 7.
The pattern 34 is shown in FIG.FIG.Meaning shown in
The design height 14 and the design height 35 shown in FIG. 6 are 1 mm or more
7 mm or less, design gradient 15 shown in FIG. 4 and design gradient shown in FIG.
The design gradient shown in the same manner as the gradient 15 is 0 to 3 degrees, and FIG.
The minimum dimension 16 shown in FIG. 7 and the minimum dimension 36 shown in FIG.
mm to 8 mm.
Rat. In the slip-resistant shoe sole shown in each of the above embodiments, the floor
Even if there is a fluid such as water or oil on the surface, as shown in FIG.
Lock design 10, Block design 20,23,25,2
7, 29 and 33 are cut without deformation.
Thus, the floor surface 39 can be continuously captured. [0021] For the sole shown in FIG.
Technical Guidelines (Ministry of Labor, Industrial Safety Research Institute, March 1991)
When the dynamic friction coefficient was measured by the
Such experimental results were obtained. 1. groundDepartmentRelationship between rubber thickness and dynamic friction coefficientGround rubber hardness 58 (JIS-A 20 ° C)     Contact part thickness (mm) Dynamic friction coefficient         1 0.344         2 0.354         3 0.384         4 0.388         5 0.396 2. groundDepartmentRelationship between rubber hardness and dynamic friction coefficient MostThin part  3mm Design pattern height 5mm     Rubber hardness (JIS-A 20 ° C) Dynamic friction coefficient         50 0.358         54 0.366         58 0.384         62 0.373         66 0.313 Measured dynamic friction coefficient and sensation value
(Evaluation), the dynamic friction coefficient is 0.36 or more.
Has a feeling of stability and the dynamic friction coefficient is less than 0.36
If various fluids are assumed,
It became stable. [0022] The present invention has been configured as described above.
Have the following effects. Fluids such as water and oil
On certain floors, both static friction and dynamic friction are fully satisfied.
A shoe sole excellent in slip resistance that can be added is obtained. ground
The block design mounting part of the part does not deform, as a result,
Block design does not fall down or collapse,
The flat top surface of the block design keeps capturing the floor surface
Can prevent slippage. As a result of the above,
Cut these membranes on floors with fluids such as oil and oil
Can keep the floor firmly grasped
You. The thickness of the thinnest part of the sole is 3mm or more and 8mm or less
So that it can be grounded regardless of the hardness of the insole
Excellent slip resistance can be exhibited only by the part. Endurance
The hardness of the material forming the shoe sole is 54 to 64 (JIS-A
  (20 ° C)
Not too soft and not too soft against fluid friction on floors
Since it disappears, the slip resistance does not decrease. B
The top of the lock design is flat (flat), and the uneven pattern is
And the height of the block design is 1 m
m to 7 mm, the design gradient of the block design is 0 to 3 degrees,
The minimum size (width) of the block design is 2 mm to 8 mm.
The above-mentioned dimensions of the block design and
Flat tops are not related to each other
A shoe sole with slip resistance in terms of perspective will be achieved. So
Therefore, even if a load is applied during wearing, the block design
Without deformation such as falling or sinking
Even if there is fluid such as water or oil in the
The top surface cuts these membranes and firmly catches the floor surface
You can continue.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a block design pattern of a slip-resistant sole according to the present invention. FIG. 2 is a diagram showing another example of a block design pattern of the shoe sole with the slip resistance. FIG. 3 is a partial cross-sectional view of a case where the slip-resistant shoe sole is formed as a single layer. FIG. 4 is a diagram showing the relationship among the thinnest part, the design height, and the design gradient in the block design pattern of the shoe sole of the present invention. FIG. 5 is a diagram illustrating a minimum dimension in the block design pattern. FIG. 6 is a diagram illustrating a design height of a two-stage design in the block design pattern. FIG. 7 is a diagram illustrating a minimum dimension in the two-stage design. FIG. 8 is a view showing a state in which the block design of the slip-resistant sole according to the present invention cuts the oil film without deforming and keeps firmly capturing the floor surface. FIG. 9 is a cross-sectional view of a sawtooth design on a conventional slip-resistant shoe sole. FIG. 10 is a plan view of FIG. 9; FIG. 11 is a cross-sectional view of a driving design in a conventional slip-resistant shoe sole. FIG. 12 is a plan view of FIG. 11; FIG. 13 is a view showing a state in which a block design is deformed when a conventional anti-skid sole has a soft ground contact portion. FIG. 14 is a diagram showing a state in which the saw design slips on the floor. FIG. 15 is a view showing a state in which the driving design slides without breaking the oil film on the floor surface and not being able to catch the floor surface. [Description of Signs] 7 Anti-skid sole 8 Thinnest part 9 Non-step part 10 Block design 11 Block design pattern 12 Grounding part 12A Midsole 14 Design height 15 Design gradient 16 Minimum dimension 17 Anti-skid sole 18 Toe part 19 Heel End 20 Block design 21 Block design row 22 Non-step section 23 Block design 24 Groove 25, 25 Block design 26 Groove 27, 27 Block design 28 Groove 29, 29 Block design 30, 30 Groove 31 Depression 32 Groove 33, 33 Block design 34 Block design pattern 35 Design height 36 Minimum dimension 37 Floor surface 38 Driving design 39 Floor surface

Claims (1)

(57) [Claims 1] In a slip-resistant shoe sole in which each of polygons, circles, etc. has an independent block design, and they collectively form a pattern of the entire shoe sole. The sole contact part is made of rubber, polyvinyl chloride, or polyurethane having a hardness of 54 to 62 (JIS-A 20 ° C.). Wherein the design height of the block design is 1 mm to 7 mm, the design gradient is 0 ° to 3 °, and the minimum size of the design pattern (ground contact surface) is 2 mm to 8 mm. The thickness of the thinnest part of the shoe sole is 3 mm so that the block design is hard to collapse and fall down.
The above shoe sole grounding portion having a thickness of up to 8 mm is constituted by a single layer sole.