JP2009240406A - Footwear sole member and footwear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a footwear sole member and the footwear capable of preventing the deterioration of an antislip function even if a wearer walks on snow. <P>SOLUTION: A tiptoe portion 10 and a plantar arch portion 30 of this footwear sole member B are formed at first antislip portions 1 and 1, and a tread portion 20 and a heel portion 40 are formed at second antislip portions 2 and 2. The second antislip portion 2 is formed by alternately disposing a plurality of fiber-containing antislip layers 21, 21, etc., which are formed by mixing fiber materials such as natural fibers and/or glass fibers to a base material consisting of natural rubber or synthetic rubber, and a plurality of removing layers 22, 22, etc. for peeling and removing foulings such as snowflakes, which are almost stuck to the fiber-containing antislip layers 21, 21, etc., in a substantially longitudinal direction of the footwear sole member B, and the respective fiber-containing antislip layers 21, 21, etc. and the respective removing layers 22, 22, etc. are formed into wave forms. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a footwear bottom member used at the bottom of footwear, and footwear provided with the footwear bottom member.

  For example, in regions where there are many opportunities to walk on snowy or icy roads in winter, footwear with metal pieces such as spikes fixed to or removable from the bottom member is used to prevent falls during walking. ing.

  However, since it is difficult to walk indoors with footwear with metal pieces, it is safe and easy to walk on snowy or frozen road surfaces, wet road surfaces, and dry road surfaces. A footwear body has been developed.

  In Patent Document 1 to be described later as such, abrasive grains such as carborundum or corundum are bonded and molded with a binder such as phenol resin to obtain a block-like non-slip member, and rubber, polyvinyl chloride and / or There is disclosed a footwear bottom member in which the nonslip member is embedded in a plurality of positions of a grounding portion of a shoe sole body formed by molding polyurethane or the like so that one surface of each nonslip member appears on the grounding surface. (For example, refer to Patent Document 1.)

In such a footwear bottom member, a non-slip member mixed with abrasive grains is embedded in the shoe sole body, so that it does not interfere with walking indoors, and snow has accumulated or frozen. Although it is easy to walk on either the road surface or the dry road surface, the abrasive grains have various three-dimensional shapes, and thus there is a problem that a sufficient anti-slip effect cannot be obtained.
Therefore, Patent Document 2 described later discloses a rug bottom member in which a plurality of glass fibers are oriented in the rolling direction so that each glass fiber is substantially perpendicular to the ground plane.
JP-A-4-292102 Japanese Utility Model Publication No. 62-21905

  However, in the footwear bottom member described later, since the frozen road surface can be firmly held by the plurality of glass fibers substantially perpendicular to the ground contact surface, a sufficient anti-slip effect can be obtained. However, when walking on the snow, there is a problem that the anti-slip action is drastically reduced because the snow bottoms easily adhere to the gaps between the adjacent glass fibers due to the force with which the footwear bottom member is pressed against the snow surface.

  The present invention has been made in view of such circumstances, and provides a footwear bottom member capable of preventing a slip-proof effect from being lowered even when walking on snow, and a footwear including the footwear bottom member. To do.

  (1) A footwear bottom member according to the present invention is applied to a ground contact portion of footwear, and includes an anti-slip portion that prevents sliding on a road surface. A plurality of fiber-containing anti-slip layers that are oriented substantially vertically and a plurality of exclusion layers for eliminating the adhesion of deposits to each fiber-containing anti-slip layer are alternately arranged in the ground plane, Each of the fiber-containing anti-slip layers and each of the exclusion layers has a wave shape.

  The footwear bottom member of the present invention includes a plurality of fiber-containing antiskid layers formed by orienting a plurality of fibers substantially perpendicular to the ground contact surface, and a plurality of materials for eliminating adhesion of deposits to each fiber-containing antislip layer. Exclusion layers are arranged alternately in the ground plane.

  In each fiber-containing anti-slip layer, the ends of a plurality of fibers oriented substantially perpendicular to the ground contact surface slightly protrude from the ground contact surface, and even on a road surface frozen due to the edge effect of this projecting end portion. Provides sufficient anti-slip action.

  On the other hand, when walking on snow, an object such as snowflakes is pressed against the snow surface and tries to adhere to the anti-slip part over the plurality of fiber-containing anti-slip layers, but even in such a case, fibers are mixed in. Since the grounding surface of the exclusion layer that is not present is smooth, no deposits adhere to the exclusion layer. In addition to this, the deposits are peeled off and removed from the anti-slip portion by using each exclusion layer as a base point due to bending of the exclusion layer during walking. This prevents the deposit from adhering to the anti-slip portion and prevents the anti-slip action from being lowered even when walking on snow.

  Further, in the footwear bottom member of the present invention, each fiber-containing anti-slip layer and each exclusion layer have a wave shape, and therefore, the fiber-containing anti-slip layer and the exclusion layer appear alternately in the longitudinal direction of each layer. As a result, the above-described peeling action of the deposit by the exclusion layer is exhibited not only in the arrangement direction in which the layers are alternately arranged, but also in the longitudinal direction of each layer, thereby improving the adhesion preventing action of the deposit.

  (2) On the other hand, in the footwear bottom member according to the present invention, the anti-slip portion is disposed on at least a portion of the footwear bottom portion including the toe region, the stepping region, the arch region, and the heel region, as necessary. It is provided.

  In the footwear bottom member of the present invention, an anti-slip portion is disposed at a portion corresponding to at least the stepping region of the footwear including the toe region, the stepping region, the arch region, and the heel region. As described above, since the anti-slip portion is disposed in the stepping region where the load is applied in the relatively vertical direction of the footwear, the edge effect by the above-mentioned fiber-containing anti-slip layer works effectively and is optimal. In such a state, an anti-slip action is exhibited.

  On the other hand, as described above, the anti-slip part is configured by alternately arranging a plurality of fiber-containing anti-slip layers and a plurality of exclusion layers in the ground plane, so that the adhered matter is based on each exclusion layer. It is peeled and removed from the part, and the adhering matter is prevented from adhering to the anti-slip part.

(3) Further, the footwear bottom member according to the present invention is characterized in that one or a plurality of anti-slip portions are disposed along a portion corresponding to the center-of-gravity movement region in the footwear as necessary.
In the footwear bottom member of the present invention, one or a plurality of anti-slip portions are disposed along a portion corresponding to the center-of-gravity movement region in the footwear. During walking, a load is applied in a relatively vertical direction of the footwear in the center-of-gravity movement region. As described above, since the anti-slip portion is arranged in the portion where the load is applied in the relatively vertical direction of the footwear, the edge effect by the fiber-containing anti-slip layer described above works effectively, and the anti-slip operation in an optimum state. Is played.

  On the other hand, as described above, the anti-slip part is configured by alternately arranging a plurality of fiber-containing anti-slip layers and a plurality of exclusion layers in the ground plane, so that the adhered matter is based on each exclusion layer. It is peeled and removed from the part, and the adhering matter is prevented from adhering to the anti-slip part.

(4) Further, in the footwear bottom member according to the present invention, the fiber-containing anti-slip layer and the exclusion layer of the anti-slip part are arranged so as to be substantially orthogonal to the direction of movement of the center of gravity in the footwear, as necessary. And
In the footwear bottom member of the present invention, the fiber-containing anti-slip layer and the exclusion layer of the antiskid portion are arranged so as to be substantially orthogonal to the direction of center of gravity movement in the footwear. Receiving the output force reliably, there is an accurate anti-slip effect.

(5) On the other hand, in the footwear bottom member according to the present invention, if necessary, the ratio of the layer width dimension of the fiber-containing anti-slip layer of the anti-slip part to the layer width dimension of the exclusion layer is 1: 0.1-0. .7.
In the footwear bottom member of the present invention, the ratio of the layer width dimension of the fiber-containing anti-slip layer of the anti-slip part to the layer width dimension of the exclusion layer is 1: 0.1 to 0.7. The anti-slipping action by the layer and the snow removing action by the exclusion layer are well balanced, and the sliding on the snow surface is prevented while reliably removing and removing the snowflakes adhering to the fiber-containing anti-slip layer. Can walk safely.

(5) By the way, the footwear which concerns on this invention is provided with one of the footwear bottom members mentioned above.
Since the footwear of the present invention includes any one of the above-described footwear bottom members, the above-described operations and effects can be achieved, and the anti-slip operation can be prevented from being lowered even when walking on snow.

(First embodiment)
FIG. 1 is an external perspective view of a shoe as an example of footwear according to the present invention, in which S is a sole, and U is an upper. The upper U can take various forms such as male or female, long or short, etc., but in the case shown in FIG. 1, it is in the shape of a male business type without a string, and its surface is Water repellent finish for walking on snow.

On the other hand, the sole S is configured such that a midsole, which is a cushioning material, is interposed between an outsole SS, which is a ground contact portion, and an inner bottom of the shoe.
The footwear bottom member according to the present invention includes the sole S having such a configuration, but may not include the insole and / or the midsole, and may be attached to the ground contact surface of the outsole SS. The type is also included.

  FIG. 2 is a bottom view of a footwear bottom member applied to the outsole SS of the shoe shown in FIG. Such a footwear bottom member B is fixed as an outsole SS or a part thereof after being cut into a shape corresponding to the bottom of the shoe. Note that FIG. 2 is applied to a shoe for the left foot, and the shoe for the right foot may be made symmetrical with the form shown in FIG.

  As shown in FIG. 2, the footwear bottom member B includes a toe portion 10 that faces each person's toes and a step between the toe portion 10 and the arch portion 30 that will be described later. The attaching portion 20, the arch portion 30 and the heel portion 40 are formed in this order, and a plurality of groove portions 50, 50,... And the toe part 10 and the arch part 30 are made into the 1st antiskid part 1,1 mentioned later, and the stepping part 20 and the collar part 40 are made into the 2nd antiskid part 2,2.

  The first anti-slip part 1, 1 is an anti-slip piece formed by crushing an anti-slip material such as eggshell and / or glass into a size of several hundred μm to several mm on a base made of natural rubber or synthetic rubber It is comprised using the plate-shaped board | plate material for 1st anti-skid parts obtained by knead | mixing the grain 11,11, ... and rolling this kneaded material to the thickness of about 5 mm. As the synthetic rubber, a material having flexibility even at a temperature of 0 ° C. or lower, such as a low nitrile rubber, can be used.

  In such a first anti-slip part 1, 1, a part of the anti-slip pieces 11, 11,... Protrudes from the ground surface, and the protruding parts of the anti-slip pieces 11, 11,. Because of its shape, it exhibits anti-slip action against stress from any direction on the ground contact surface.

  On the other hand, the second anti-slip portions 2 and 2 include a plurality of fiber-containing anti-slip layers 21 and 21 in which fiber materials such as natural fibers and / or glass fibers are mixed in a base material made of natural rubber or synthetic rubber. ,..., And a plurality of exclusion layers 22, 22,... For separating and removing deposits such as snowflakes that are to adhere to the fiber-containing anti-slip layers 21, 21,. They are arranged alternately in the direction.

  The fiber-containing anti-slip layers 21, 21,... Are mixed in the base material so that each fiber in the fiber material is oriented substantially at right angles to the ground plane, and a plurality of fibers positioned in the ground plane are arranged. The end portion is projected from the ground plane so as to have a length range of several μm to several hundred μm.

In such fiber-containing anti-slip layers 21, 21,..., The ends of a plurality of fibers located in the grounding surface protrude from the grounding surface. On the other hand, it has a higher anti-slip effect than the first anti-slip parts 1 and 1.
On the other hand, the exclusion layers 22, 22,... Are made of a base material such as natural rubber or synthetic rubber, and the ground contact surfaces of the exclusion layers 22, 22,.

In such exclusion layers 22, 22,..., Deposits such as snowflakes adhere to the second anti-slip portions 2, 2 across the plurality of fiber-containing anti-slip layers 21, 21,. Even in such a case, since the grounding surfaces of the exclusion layers 22, 22,... Are smooth, the deposits do not adhere to the exclusion layers 22, 22,. In addition to this, since the exclusion layers 22, 22,... Are flexible on the snow, the adhering matter is caused by the kicking force during walking and the bending / extension of the exclusion layers 22, 22,. It peels from the 2nd anti-slip | skid parts 2 and 2 on the basis of the exclusion layers 22, 22, and so on.
As a result, the adhering matter is prevented from adhering to the second anti-slip portions 2 and 2.

  At this time, as shown in FIG. 2, the fiber-containing anti-slip layers 21, 21,... Of the second anti-slip parts 2, 2 and the exclusion layers 22, 22,. .. And the exclusion layers 22, 22,... Alternately appear in the width direction.

  In the second anti-slip part 2, 2, since the fiber-containing anti-slip layers 21, 21, ... and the exclusion layers 22, 22, ... appear alternately in the width direction of the footwear bottom member B, The removal / removal action of the deposit by the excluded layers 22, 22,... Is exhibited not only in the longitudinal direction of the footwear bottom member B but also in the width direction of the footwear bottom member B, thereby improving the adhesion preventing action of the deposit. To do.

Next, a method for manufacturing such a footwear bottom member will be described.
FIG. 3 is an explanatory view for explaining a manufacturing process of the footwear bottom member according to the present invention.
The first anti-slip part plate material and the second anti-slip part plate material to be the first anti-slip part 1 and the second anti-slip part 2 are manufactured separately (3 (a)). In addition, since the same kind of equipment can be used in any manufacturing process, both processes are described in FIG.

  The first anti-slip part plate material is made of a material made of a material having flexibility even at a temperature of 0 ° C. or lower, such as low nitrile rubber, and an anti-slip material such as eggshell and / or glass is several hundred μm to several Anti-slip pieces formed by crushing to a size of about mm are added to, for example, 25 parts by mass with respect to 100 parts by mass of the substrate, and kneaded by a kneader 70 such as a roll or a kneader. And this kneaded material is rolled to a thickness of about 5 mm by a rolling mill 80, and the obtained strip is cut into appropriate lengths to obtain a plurality of plate-like first anti-slip part plates a, a,. Get.

On the other hand, the board | plate material for 2nd anti-slip | skid parts can be manufactured as follows.
That is, bamboo cocoons such as true bamboo or sect bamboo are separated and processed to have a diameter of about 0.05 mm to 0.6 mm by physical treatment and / or chemical treatment. By this separation process, the fiber is cut at a plurality of locations in the longitudinal direction and processed into a short fiber shape.

  The bamboo fiber is hydrophobized by heat treatment after sufficiently impregnating the phenol treatment liquid into the short fiber-like bamboo fiber. Thereby, the water repellency and water resistance of the bamboo fiber are remarkably improved.

On the other hand, glass fibers having a diameter of several tens of μm can be used.
These fibers are added singly or mixed to the base material and kneaded by the kneader 70.

  As the base material, natural rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, nitrile butadiene rubber or the like can be used, or as a filler, calcium carbonate, magnesium carbonate, silica (white carbon), or Carbon black or the like may be added.

  For example, with respect to 100 parts by mass of such a base material, 10 parts by mass of bamboo fiber subjected to hydrophobic treatment as described above is added and 50 parts by mass of glass fiber are added and kneaded by the kneader 70. During the kneading operation, the bamboo fiber and the glass fiber are sheared to a length of about 5 mm by the viscoelasticity and shearing force of the base material, and are substantially uniformly dispersed in the base material.

  Then, the kneaded product is rolled by a rolling mill 80 and rolled to a thickness of about 2.5 mm to 3.5 mm, and the obtained strip is cut into appropriate lengths to obtain a plurality of plate-like fiber-containing anti-skids. Layer materials b1, b1,... Are obtained.

When the corrugated processing by heating and pressure welding described later is performed by forming the fiber-containing anti-slip layer plates b1, b1,... In this case, the continuous wave-shaped fiber-containing anti-slip layers 21, 21,... Are formed without causing a defect such as breakage, thereby providing an anti-slip effect without interruption in the width direction of the footwear bottom member.
In addition, bamboo fiber and glass fiber are orientated in a direction parallel to the rolling direction by the kneading / rolling operation.

On the other hand, the base material to which the above-mentioned fibers are not added is kneaded, rolled to a thickness of about 1.0 mm to 1.7 mm, and the obtained strip is cut into appropriate lengths to obtain a plurality of plate-like shapes. Exclusion layer plate materials b2, b2,... Are obtained. In other words, the thickness dimension of the plate material for exclusion layer b2, b2,. ,... Can be reliably peeled off from the fiber-containing antiskid layers 21, 21.
In addition, as a base material of a 2nd strip | belt-shaped material, the material which has sufficient flexibility even if it is the temperature of 0 degrees C or less, such as natural rubber and a synthetic rubber, is used.

  As shown in FIG. 3 (b), the fiber-containing anti-slip layer plates b1, b1,... And the exclusion layer plates b2, b2,. A plurality of second anti-slip part plate members b, b,... Are obtained by cutting each width dimension of about 5 mm in parallel with the direction.

  Then, the first anti-slip part plate material a is cut into shapes corresponding to the shapes of the toe part 10 and the arch part 30 to obtain a plurality of cut pieces, and the second anti-slip part plate material b is stepped on the step part 20. And the shape according to the shape of the collar part 40 is cut | disconnected, respectively, and a cut piece is obtained, and as shown in FIG.3 (c), the convex part of an appropriate pattern which forms a groove | channel is formed in each obtained cut piece 3 is arranged in accordance with the toe portion 10, the stepping portion 20, the arch portion 30 and the heel portion 40 in the molded mold 90, and the cut pieces are fixed to each other by heating and press-contacting in this state. As shown in d), the footwear bottom member B is obtained, and appropriate groove portions 50, 50,... are formed in the first anti-slip portions 1, 1 and the second anti-slip portions 2, 2. At this time, each of the fiber-containing anti-slip layers 21, 21,... And each of the exclusion layers 22, 22,... Constituting the second anti-slip part 2 is bent at a plurality of locations to form a continuous wave layer.

At this time, the ratio of the layer width dimension of the fiber-containing anti-slip layers 21, 21,... Of the second anti-slip part 2 to the layer width dimension of the exclusion layers 22, 22,. It has become. As a result, the anti-slipping action by the fiber-containing anti-slip layers 21, 21,... And the snowflake removing action by the exclusion layers 22, 22,. While removing and removing the snowflakes reliably, sliding on the snow surface is prevented, and it is possible to walk safely on the snow.
As shown in FIG. 1, the footwear bottom member B manufactured in this manner is cut around its periphery according to the contour of the shoe, and fixed as an outsole SS.

  On the other hand, as shown in FIG. 4, in a shoe with a raised heel and a step between the arch and the arch, an appropriate amount corresponding to the toe, the stepping portion, and the heel is excluded. It may be cut into a shape and fixed as an outsole SS.

  As described above, in the footwear according to the present invention, the second anti-slip portions 2 and 2 are disposed in the stepping portion and the heel portion, which are portions to which a load is applied in a relatively vertical direction of the footwear. The above-described edge effect by the fiber-containing anti-slip layers 21, 21,... Of the second anti-slip parts 2, 2, acts effectively, and an anti-skid action is achieved in an optimum state.

On the other hand, since the first anti-slip part 1 is disposed on the toe part, which is a part to which a load is applied in various directions of the footwear, the anti-slip action can be exhibited in response to stress from various directions. it can.
As described above, the first anti-slip portion 1 is disposed on the toe portion, and the second anti-slip portions 2 and 2 are disposed on the stepping portion and the heel portion, so that it is appropriate according to the movement of the footwear during walking. Anti-slip action is achieved.

Each of the exclusion layers 22, 22,... Is kneaded with an appropriate amount of anti-slip pieces obtained by crushing an anti-slip material such as eggshell and / or glass into a size of about several hundred μm to several mm. Also good. In such anti-slip particles, the shape of the portion protruding from the ground surface is indefinite, and the density of the portion protruding from the ground surface is low, so even in the exclusion layer in which the anti-slip particles are kneaded, The same effect as the exclusion layers 22, 22,.
In the other footwear bottom member according to the present invention, the entire region may be constituted by the second anti-slip portion 2.

(Second Embodiment)
FIG. 5 is a bottom view of a footwear bottom member according to the second embodiment of the present invention, in which the arrangement of the second anti-slip portions 2, 2,. In the figure, parts corresponding to those shown in FIG.

  As shown in FIG. 5, the ground contact surface of the footwear bottom member B has a plurality of second anti-slip portions 2, 2,. Arranged at an appropriate distance from each other on a substantially S-shape along the portion R corresponding to the region.

  Here, the center-of-gravity movement region refers to a set of trajectories in which the user's center of gravity moves in the footwear during walking of the user wearing the footwear. The center-of-gravity movement area has an appropriate width corresponding to an arbitrary user. In this case, it is preferable that the second anti-slip portions 2, 2,... Have a width dimension that can cover the entire width of the gravity center moving region.

  During walking, a load is applied in a relatively vertical direction of the footwear in the center-of-gravity movement region. As described above, since the second anti-slip portions 2, 2,... Are disposed along the portion corresponding to the center-of-gravity movement region, which is a portion to which a load is applied in a relatively vertical direction of the footwear, The edge effect by the layers 21, 21,... Acts effectively, and an anti-slip action is exhibited in an optimum state.

  On the other hand, since each of the second anti-slip portions 2, 2,... Is provided with the fiber-containing anti-slip layers 21, 21,... And the exclusion layers 22, 22,. It is possible to prevent deposits such as snowflakes from adhering to the anti-slip portions 2, 2,.

  In the present embodiment, the case where a plurality of second anti-slip portions 2, 2,... Are arranged along the portion R corresponding to the center-of-gravity movement region is shown, but the present invention is not limited to this. Needless to say, a belt-like second anti-slip portion may be provided along the portion R corresponding to the center-of-gravity movement region.

  Further, as shown in FIG. 6, the fiber-containing anti-slip layers 21, 21,... And the exclusion layers 22, 22,. You may make it arrange | position so that it may cross substantially orthogonal to a moving direction.

  As described above, since each of the fiber-containing anti-slip layers 21, 21,... Is arranged so as to be substantially orthogonal to the direction of movement of the center of gravity, the kicking force is reliably received at each position in the longitudinal direction of the footwear bottom member. Provides anti-slip action.

1 is an external perspective view of a shoe as an example of footwear according to the present invention. It is a bottom view of the footwear bottom member applied to the outsole of the shoe shown in FIG. It is explanatory drawing explaining the manufacturing process of the footwear bottom member which concerns on this invention. It is a top view which shows the bottom part of the other footwear which concerns on this invention. It is a bottom view of the footwear bottom member concerning a 2nd embodiment of the present invention. It is a bottom view of other footwear bottom members concerning a 2nd embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st antiskid part 2 2nd antiskid part 10 toe part 20 stepping part 21 fiber-containing antiskid layer 22 antiskid layer 30 exclusion arch part 40 collar part 50 groove a board material for 1st antiskid part b board material for 2nd antiskid part B Footwear bottom material

Claims (6)

In a footwear bottom member that is applied to a ground contact portion of footwear and includes a slip prevention portion that prevents sliding on a road surface,
The anti-slip part includes a plurality of fiber-containing anti-slip layers formed by orienting a plurality of fibers substantially perpendicularly to the ground surface, and a plurality of exclusion layers for eliminating adhesion of deposits to each fiber-containing anti-slip layer. Are disposed alternately on the ground surface, and each of the fiber-containing anti-slip layers and each of the exclusion layers has a wave shape.   2. The footwear bottom member according to claim 1, wherein the anti-slip portion is disposed at least in a portion corresponding to the stepping region of a footwear bottom portion including a toe region, a stepping region, an arch region, and a heel region.   The footwear bottom member according to claim 1 or 2, wherein one or a plurality of the anti-slip portions are disposed along a portion corresponding to a center-of-gravity movement region in the footwear.   The footwear bottom member according to claim 3, wherein the fiber-containing anti-slip layer and the exclusion layer of the anti-slip part are arranged so as to be substantially orthogonal to the direction of center of gravity movement in the footwear.   The footwear according to any one of claims 1 to 4, wherein a ratio of a layer width size of the fiber-containing anti-slip layer of the anti-slip portion to a layer width size of the exclusion layer is 1: 0.1 to 0.7. Bottom member.   A footwear comprising the footwear bottom member according to any one of claims 1 to 5.

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