EP1419708A1 - Static electricity removing apparatus for footwear bottom, static electricity removing footwear bottom and electricity removing method of footwear bottom - Google Patents
Static electricity removing apparatus for footwear bottom, static electricity removing footwear bottom and electricity removing method of footwear bottom Download PDFInfo
- Publication number
- EP1419708A1 EP1419708A1 EP03257221A EP03257221A EP1419708A1 EP 1419708 A1 EP1419708 A1 EP 1419708A1 EP 03257221 A EP03257221 A EP 03257221A EP 03257221 A EP03257221 A EP 03257221A EP 1419708 A1 EP1419708 A1 EP 1419708A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electricity removing
- static electricity
- footwear bottom
- face
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
- A43B13/36—Easily-exchangeable soles
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/36—Footwear with health or hygienic arrangements with earthing or grounding means
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/16—Overshoes
- A43B3/163—Overshoes specially adapted for health or hygienic purposes, e.g. comprising electrically conductive material allowing the discharge of electrostatic charges
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
Definitions
- the present invention relates to a static electricity removing apparatus for incorporation in a footwear bottom to remove the static electricity generated between the footwear and the ground when walking by utilizing a corona discharge by conductive fibers, and to a footwear bottom having the static electricity removing function.
- the footwear bottom Since the footwear bottom is a place severely rubbed with the ground, it becomes a great cause for generating the static electricity when walking. As a result, it follows that the static electricity is accumulated in the footwear bottom and, additionally, the whole human body is electrified by the static electricity. From such a viewpoint, it is very desirable that the electricity can be removed from the footwear bottom in order that the human body is not electrified.
- the invention according to the prior art 1 is one in which the stainless fibers of the ground contacting portion of the footwear bottom attempt to damp the static electricity by a neutralization/reduction at tips of the conductive fibers regardless of the material of the floor-contacting face of the footwear bottom.
- it since it is one which is used by being blended with a synthetic rubber and the like and is always in a ground contacting state, there has been a fear that the discharge is hindered by the fact that exposed faces of the conductive fibers are contaminated by contact with the ground.
- the stainless fibers are blended with the synthetic rubber and the like, there is a high possibility that the blended material is inferior in comparison with the durability, the elasticity and the like possessed inherently by the synthetic rubber, so that a reduction in quality is brought about in relation to the feeling when wearing the footwear and the ease of walking.
- the invention is one made in view of the above circumstances, and provides a static electricity removing apparatus and a static electricity removing footwear bottom, in each of which characteristics of a material of the footwear bottom, such as durability and elasticity, are not affected, and there is not brought about a reduction in electricity removing function owing to the fact that exposed faces of conductive fibers are contaminated.
- a static electricity removing tool which comprises a basal plate having in its inner face an attaching means for a ground contacting face of a footwear bottom and a static electricity removing sheet in which a corona discharge is made an electricity removing means, and in which a concave portion deeper than a thickness of the static electricity removing sheet is formed in a ground contacting face of the basal plate, and a step difference concaved than the ground contacting face of the basal plate is formed in an outer face of the static electricity removing sheet by attaching the static electricity removing sheet to a bottom face of the concave portion through a bonding means; and a static electricity removing footwear bottom in which a step difference concaved than a ground contacting face of a footwear bottom is formed in an outer face of a static electricity removing sheet by forming a concave portion deeper than a thickness of the static electricity removing sheet in a ground contacting face of a footwear bottom and attaching a static electricity removing sheet, in which
- a static electricity removing tool for footwear bottom of the invention since there is adopted the constitution in which, by attaching the static electricity removing sheet in which the corona discharge is made the electricity removing means to the bottom face of the concave portion deeper than the thickness of the static electricity removing sheet, the outer face of the static electricity removing sheet is concaved than the ground contacting face of the basal plate, it is possible to effectively neutralize the static electricity generated when walking and accumulated in the footwear bottom by the corona discharge of the static electricity removing sheet adjoining the footwear bottom, so that an excellent electricity removing effect can be obtained.
- a removal of the static electricity can be simply performed merely by attaching the static electricity removing sheet to a bottom face of the footwear bottom.
- the static electricity removing sheet is prevented from carelessly dropping, and the static electricity removing sheet can be protected from a contamination and the like.
- the static electricity removing footwear bottom similarly to the above static electricity removing tool for footwear bottom, since there is adopted the constitution in which the outer face of the static electricity removing sheet is concaved than the ground contacting face of the basal plate by attaching the static electricity removing sheet in which the corona discharge is made the electricity removing means to the bottom face of the concave portion deeper than the thickness of the static electricity removing sheet, the static electricity generated when walking is neutralized by the corona discharge without the fact that the outer face of the static electricity removing sheet contacts with the ground, so that an excellent electricity removing effect can be obtained. Further, in the case where the sheet covering piece is formed in the concave portion edge of the footwear bottom and the outer face end portion of the static electricity removing sheet is covered by the sheet covering piece, it is possible to protect the static electricity removing sheet from the contamination and the like.
- a static electricity removing apparatus for a footwear bottom comprises a plate-like urethane rubber basal plate 1 of about 4 mm in thickness, which mainly approximates to an ellipse whose major axis is about 105 mm and whose minor axis is about 65 mm, and a nonwoven fabric-like static electricity removing sheet 2, of about 1.5 mm in thickness t, consisting of very fine conductive fibers.
- concave portions 11, of about 2.5 mm in depth m, for fitting the static electricity removing sheet 2 are formed in three places in a ground contacting face 10 of the basal plate 1.
- a pressure sensitive adhesive double coated tape 5 of about 0.3 mm in thickness, and a release coated paper 6.
- the pressure sensitive adhesive double coated tape 5 acts as means for attaching the static electricity removing apparatus for footwear bottom to a footwear bottom 7.
- the three static electricity removing sheets 2 from which release coated papers have been peeled are adhered to the bottom faces 12 of the concave portions 11 at three places of the basal plate 1 by pressure sensitive adhesive double coated tapes 41 of 0.3 mm in thickness.
- a step difference 40 such that the outer face 20 is concaved below the ground contacting face 10 of the basal plate 1.
- the static electricity removing sheet 2 does not contact with the ground when wearing by the fact that the step difference 40 is formed, the exposed faces of the conductive fibers can be prevented from being contaminated when walking.
- the static electricity can be removed by the fact that the corona discharge is generated from the outer face 20 of the static electricity removing sheet 2 toward the footwear bottom to thereby electrically neutralize the footwear bottom.
- the static electricity removing sheet 2 in the embodiment 1 it is possible to use, for example, a nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide.
- a nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide.
- a static electricity removing apparatus for a footwear bottom has the same basic constitution as that of embodiment 1, i.e., it comprises a basal plate 1 having on its inner face 13 the pressure sensitive adhesive double coated tape 5 as an attaching means for a ground contacting face 70 of a footwear bottom 7 and the nonwoven fabric-like static electricity removing sheet 2 consisting of very fine conductive fibers.
- the concave portion 11 whose depth dimension m is larger than the thickness t of the static electricity removing sheet 2 is formed in the ground contacting face 10 of the basal plate 1.
- the static electricity removing sheet 2 is attached to the bottom face 12 of the concave portion 11 through the pressure sensitive adhesive double coated tape 41, and around the outer face 20 of the static electricity removing sheet 2 there is formed the step difference 40 concaved into the ground contacting face 10 of the basal plate 1.
- a flange 15 projects in from the edge 14 of the concave portion 11, and an edge 21 of the outer face 20 of the static electricity removing sheet 2 is covered by the flange 15.
- the flange 15 projects in from the edge 14 of the concave portion 11 and the edge 21 of the outer face 20 of the static electricity removing sheet 2 is covered by the flange 15, the static electricity removing sheet 2 is prevented from accidentally dropping out, the static electricity removing sheet 2 is protected from contamination and the like when walking, the ground contacting area of the static electricity removing apparatus for footwear bottom is increased in comparison with the static electricity removing apparatus for footwear bottom according to the embodiment 1, and the gripping force with respect to the ground is increased.
- the position can be simply changed in compliance with a wearer's taste by exchanging only the pressure sensitive adhesive double coated tape 5.
- a static electricity removing footwear bottom 3 according to an embodiment 3 of the invention is one using, as the static electricity removing sheet 2, the nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide similar to the static electricity removing apparatus 4 according to the embodiment 1 and the embodiment 2, and is one having a constitution in which concave portions 31 of a depth dimension of 2.5 mm deeper than the thickness 1.5 mm of the static electricity removing sheet 2 are formed in three places in a ground contacting face 30 of the static electricity removing footwear bottom 3.
- the static electricity removing sheet 2 the nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide similar to the static electricity removing apparatus 4 according to the embodiment 1 and the embodiment 2, and is one having a constitution in which concave portions 31 of a depth dimension of 2.5 mm deeper than the thickness 1.5 mm of the static electricity removing sheet 2
- a step difference 34 concaved below the ground contacting face 30 of the footwear bottom 3 is formed by attaching the static electricity removing sheet 2 to a bottom face 32 of the concave portion 31 by a pressure sensitive adhesive double coated tape 33.
- a flange 36 extends in from an edge 35 of the concave portion 31 in a manner similar to that of embodiment 2, and the edge portion 21 of the static electricity removing sheet 2 is covered by the flange 36.
- the static electricity removing footwear bottom 3 according to the embodiment 3 by causing it to have a function similar to the static electricity removing apparatus 4 according to the embodiments 1 and 2, it is possible to ensure an ability for neutralizing and removing the static electricity by the corona discharge.
- the sheet 2 in the footwear bottom there is no fear that the electricity removing means drops off the footwear bottom and, additionally, the durability can be increased.
- the disposition of the concave portions in the static electricity removing apparatus for footwear bottom and the static electricity removing footwear bottom of the invention it is not limited only to one having the concave portions in three places shown in the embodiment 1 to the embodiment 3 and, as shown in Fig.8 and Fig.9, it can be also made, for example, into many circular concave portions, plural band-like concave portions and the like.
- the static electricity removing sheet 2 which is thinner than a depth of the groove 81 and in which the corona discharge can occur.
- the nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide, but it is not necessarily limited to this.
- organic conductive fibers trademark: SOLDION
- SOLDION like conductive fibers whose basic materials are polyethylene terephthalate cotton, pulp and carbon and in which conductive substances are mixed, and like carbon fibers, etc., if the fibers are ones which can obtain the electricity removing effect by the corona discharge, may also be used.
- the construction comprises the basal plate 1 having on its inner face 13 the attaching means for the ground contacting face 70 of the footwear bottom 7 and the static electricity removing sheet 2 in which the corona discharge is made (the electricity removing means) is formed in the ground contacting face 10 of the basal plate 1, and the concave portion 11 is deeper than the thickness of the static electricity removing sheet, and the step difference concaved below the ground contacting face 10 of the basal plate 1 is formed above the outer face 20 of the static electricity removing sheet 2 by attaching the static electricity removing sheet 2 to the bottom face 12 of the concave portion 11 through the bonding means.
- the benefit also applies to the construction in which the step difference 34 concaved below the ground contacting face 30 of the footwear bottom 3 is formed above the outer face 20 of the static electricity removing sheet 2 by forming the concave portion 31 deeper than the thickness of the static electricity removing sheet 2 in the ground contacting face of the footwear bottom 3 and attaching the static electricity removing sheet 2, so that the corona discharge is made by the electricity removing means, to the bottom face 32 of the concave portion 31 through the bonding means.
- the benefit also applies to the construction in which, to the groove 81 previously formed in the ground contacting face 80 of the footwear bottom 8, there is attached the static electricity removing sheet 2, which is thinner than the depth of the groove 81 and in which the corona discharge is made by the electricity removing means, to thereby bring about the state that the outer face 20 of the static electricity removing sheet 2 is concaved below the ground contacting face. Since the static electricity removing sheet 2 does not contact with the ground, the feeling experienced by the wearer is not adversely affected irrespective of the degree of hardness of the static electricity removing sheet 2 and, because the static electricity removing sheet is positioned so as to form the space in the vicinity of the footwear bottom, the static electricity removing sheet is not contaminated and is not abraded.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
Description
- The present invention relates to a static electricity removing apparatus for incorporation in a footwear bottom to remove the static electricity generated between the footwear and the ground when walking by utilizing a corona discharge by conductive fibers, and to a footwear bottom having the static electricity removing function.
- From old times, there have been publicly known a static electricity preventing footwear in which a material of stainless fibers of 0.5 to 1.5 deniers in fineness and 0.01 to 0.15 mm in length is contained in 3 to 5% by weight ratio in materials, such as rubber and fibers, forming a portion contacting with the ground at the bottom of a footwear main body, and a static electricity preventing foot wear (hereafter, referred to as prior art 1) in which chip-like or foil-like stainless material is used in place of the stainless fibers (for example, refer to JP-A-2002-101904 (pages 2 - 3)).
- Since the footwear bottom is a place severely rubbed with the ground, it becomes a great cause for generating the static electricity when walking. As a result, it follows that the static electricity is accumulated in the footwear bottom and, additionally, the whole human body is electrified by the static electricity. From such a viewpoint, it is very desirable that the electricity can be removed from the footwear bottom in order that the human body is not electrified.
- However, as mentioned above, the invention according to the
prior art 1 is one in which the stainless fibers of the ground contacting portion of the footwear bottom attempt to damp the static electricity by a neutralization/reduction at tips of the conductive fibers regardless of the material of the floor-contacting face of the footwear bottom. However, since it is one which is used by being blended with a synthetic rubber and the like and is always in a ground contacting state, there has been a fear that the discharge is hindered by the fact that exposed faces of the conductive fibers are contaminated by contact with the ground. - Further, in the case where the stainless fibers are blended with the synthetic rubber and the like, there is a high possibility that the blended material is inferior in comparison with the durability, the elasticity and the like possessed inherently by the synthetic rubber, so that a reduction in quality is brought about in relation to the feeling when wearing the footwear and the ease of walking.
- The invention is one made in view of the above circumstances, and provides a static electricity removing apparatus and a static electricity removing footwear bottom, in each of which characteristics of a material of the footwear bottom, such as durability and elasticity, are not affected, and there is not brought about a reduction in electricity removing function owing to the fact that exposed faces of conductive fibers are contaminated.
- According to the invention, there are provided a static electricity removing tool which comprises a basal plate having in its inner face an attaching means for a ground contacting face of a footwear bottom and a static electricity removing sheet in which a corona discharge is made an electricity removing means, and in which a concave portion deeper than a thickness of the static electricity removing sheet is formed in a ground contacting face of the basal plate, and a step difference concaved than the ground contacting face of the basal plate is formed in an outer face of the static electricity removing sheet by attaching the static electricity removing sheet to a bottom face of the concave portion through a bonding means; and a static electricity removing footwear bottom in which a step difference concaved than a ground contacting face of a footwear bottom is formed in an outer face of a static electricity removing sheet by forming a concave portion deeper than a thickness of the static electricity removing sheet in a ground contacting face of a footwear bottom and attaching a static electricity removing sheet, in which a corona discharge is made a electricity removing means, to a bottom face of the concave portion through a bonding means; and the like.
- According to a static electricity removing tool for footwear bottom of the invention, as mentioned above, since there is adopted the constitution in which, by attaching the static electricity removing sheet in which the corona discharge is made the electricity removing means to the bottom face of the concave portion deeper than the thickness of the static electricity removing sheet, the outer face of the static electricity removing sheet is concaved than the ground contacting face of the basal plate, it is possible to effectively neutralize the static electricity generated when walking and accumulated in the footwear bottom by the corona discharge of the static electricity removing sheet adjoining the footwear bottom, so that an excellent electricity removing effect can be obtained.
- Further, according to the static electricity removing tool for footwear bottom of the invention, a removal of the static electricity can be simply performed merely by attaching the static electricity removing sheet to a bottom face of the footwear bottom.
- In addition to the above constitution, by forming a sheet covering piece in a concave portion edge of the basal plate to thereby cover an outer face end portion of the static electricity removing sheet, the static electricity removing sheet is prevented from carelessly dropping, and the static electricity removing sheet can be protected from a contamination and the like.
- Additionally, also in the static electricity removing footwear bottom according to the invention, similarly to the above static electricity removing tool for footwear bottom, since there is adopted the constitution in which the outer face of the static electricity removing sheet is concaved than the ground contacting face of the basal plate by attaching the static electricity removing sheet in which the corona discharge is made the electricity removing means to the bottom face of the concave portion deeper than the thickness of the static electricity removing sheet, the static electricity generated when walking is neutralized by the corona discharge without the fact that the outer face of the static electricity removing sheet contacts with the ground, so that an excellent electricity removing effect can be obtained. Further, in the case where the sheet covering piece is formed in the concave portion edge of the footwear bottom and the outer face end portion of the static electricity removing sheet is covered by the sheet covering piece, it is possible to protect the static electricity removing sheet from the contamination and the like.
- And, since there is adopted the constitution in which the electricity removing means is provided from the beginning, it is possible to obtain one fundamentally having no fear that the electricity removing means drops.
-
- Fig.1 is a perspective view of a static electricity
removing apparatus for a footwear bottom according to an
embodiment 1 of the invention; - Fig.2 is an enlarged sectional view along the line A-A
of Fig.1 of the static electricity removing apparatus
according to the
embodiment 1 of the invention; - Fig.3 is a sectional view similar to Fig.2 but
showing a static electricity removing apparatus for a
footwear bottom according to an
embodiment 2 of the invention; - Fig.4 is a longitudinal sectional view showing the
state that the static electricity removing apparatus
according to the
embodiment 2 of the invention has been attached to a footwear bottom; - Fig.5 is a perspective view showing the state that
the static electricity removing apparatus according to the
embodiment 1 of the invention has been attached to a footwear bottom; - Fig.6 is a perspective view of a footwear, showing a
static electricity removing footwear bottom according to an
embodiment 3 of the invention; - Fig.7 is an enlarged sectional view along the line B-B
of Fig.6 showing the static electricity removing footwear
bottom according to the
embodiment 3 of the invention; - Fig.8 is a bottom plan view showing a static electricity removing footwear bottom according to another embodiment of the invention;
- Fig.9 is a bottom plan view showing a static electricity removing footwear bottom according to another embodiment of the invention;
- Fig.10 is a bottom plan view showing the state that a static electricity removing sheet has been attached to a footwear bottom of a ready-made footwear; and
- Fig.11 is an enlarged sectional view along the line C-C of Fig. 10 of the footwear bottom, showing the state that the static electricity removing sheet has been attached to the footwear bottom of the ready-made footwear.
-
- As shown in Fig.1, Fig.2 and Fig.5, a static electricity removing apparatus for a footwear bottom according to an
embodiment 1 of the invention comprises a plate-like urethane rubberbasal plate 1 of about 4 mm in thickness, which mainly approximates to an ellipse whose major axis is about 105 mm and whose minor axis is about 65 mm, and a nonwoven fabric-like staticelectricity removing sheet 2, of about 1.5 mm in thickness t, consisting of very fine conductive fibers. - As shown in Fig.1,
concave portions 11, of about 2.5 mm in depth m, for fitting the staticelectricity removing sheet 2 are formed in three places in aground contacting face 10 of thebasal plate 1. To the whole inner face 13 (the back face relative to the ground contacting front face 10), there are laminated in sequence a pressure sensitive adhesive double coatedtape 5 of about 0.3 mm in thickness, and a release coatedpaper 6. The pressure sensitive adhesive double coatedtape 5 acts as means for attaching the static electricity removing apparatus for footwear bottom to afootwear bottom 7. - Further, as shown in Fig.5, the three static
electricity removing sheets 2 from which release coated papers have been peeled are adhered to thebottom faces 12 of theconcave portions 11 at three places of thebasal plate 1 by pressure sensitive adhesive double coatedtapes 41 of 0.3 mm in thickness. By this, it follows that, around anouter face 20 of the staticelectricity removing sheet 2, there is formed astep difference 40 such that theouter face 20 is concaved below theground contacting face 10 of thebasal plate 1. Thus it follows that, under a state that theground contacting face 10 of thebasal plate 1 butts against the ground, the staticelectricity removing sheet 2 does not contact with the ground, so that a space is formed between theouter face 20 of the staticelectricity removing sheet 2 and the ground. - And, since the static
electricity removing sheet 2 does not contact with the ground when wearing by the fact that thestep difference 40 is formed, the exposed faces of the conductive fibers can be prevented from being contaminated when walking. - When used, if static electricity is accumulated in the footwear bottom by walking and the like, since the footwear bottom is in a positional relation very adjacent in distance to the static electricity removing sheet, the static electricity can be removed by the fact that the corona discharge is generated from the
outer face 20 of the staticelectricity removing sheet 2 toward the footwear bottom to thereby electrically neutralize the footwear bottom. - Incidentally, as the static
electricity removing sheet 2 in theembodiment 1, it is possible to use, for example, a nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide. - As shown in the enlarged sectional views of Fig.3 and Fig.4, a static electricity removing apparatus for a footwear bottom according to an
embodiment 2 of the invention has the same basic constitution as that ofembodiment 1, i.e., it comprises abasal plate 1 having on itsinner face 13 the pressure sensitive adhesive double coatedtape 5 as an attaching means for aground contacting face 70 of afootwear bottom 7 and the nonwoven fabric-like staticelectricity removing sheet 2 consisting of very fine conductive fibers. Theconcave portion 11 whose depth dimension m is larger than the thickness t of the staticelectricity removing sheet 2 is formed in theground contacting face 10 of thebasal plate 1. The staticelectricity removing sheet 2 is attached to thebottom face 12 of theconcave portion 11 through the pressure sensitive adhesive double coatedtape 41, and around theouter face 20 of the staticelectricity removing sheet 2 there is formed thestep difference 40 concaved into theground contacting face 10 of thebasal plate 1. But there is one difference from the static electricity removing apparatus according to theembodiment 1 in that aflange 15 projects in from theedge 14 of theconcave portion 11, and anedge 21 of theouter face 20 of the staticelectricity removing sheet 2 is covered by theflange 15. - According to the
embodiment 2, because theflange 15 projects in from theedge 14 of theconcave portion 11 and theedge 21 of theouter face 20 of the staticelectricity removing sheet 2 is covered by theflange 15, the staticelectricity removing sheet 2 is prevented from accidentally dropping out, the staticelectricity removing sheet 2 is protected from contamination and the like when walking, the ground contacting area of the static electricity removing apparatus for footwear bottom is increased in comparison with the static electricity removing apparatus for footwear bottom according to theembodiment 1, and the gripping force with respect to the ground is increased. - Incidentally, regarding the attaching means between the static
electricity removing apparatus 4 and theground contacting face 70 of thefootwear bottom 7 according to theembodiment 1 and theembodiment 2, in a case where simple and strong bonding means such as the pressure sensitive adhesive double coatedtape 5 is used, the position can be simply changed in compliance with a wearer's taste by exchanging only the pressure sensitive adhesive double coatedtape 5. - Further, as shown in Fig.6 and Fig.7, a static electricity removing
footwear bottom 3 according to anembodiment 3 of the invention is one using, as the staticelectricity removing sheet 2, the nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide similar to the staticelectricity removing apparatus 4 according to theembodiment 1 and theembodiment 2, and is one having a constitution in whichconcave portions 31 of a depth dimension of 2.5 mm deeper than the thickness 1.5 mm of the staticelectricity removing sheet 2 are formed in three places in aground contacting face 30 of the static electricity removingfootwear bottom 3. Astep difference 34 concaved below theground contacting face 30 of thefootwear bottom 3 is formed by attaching the staticelectricity removing sheet 2 to abottom face 32 of theconcave portion 31 by a pressure sensitive adhesive double coatedtape 33. Aflange 36 extends in from anedge 35 of theconcave portion 31 in a manner similar to that ofembodiment 2, and theedge portion 21 of the staticelectricity removing sheet 2 is covered by theflange 36. - Thus, in the static electricity removing
footwear bottom 3 according to theembodiment 3, by causing it to have a function similar to the staticelectricity removing apparatus 4 according to theembodiments sheet 2 in the footwear bottom there is no fear that the electricity removing means drops off the footwear bottom and, additionally, the durability can be increased. - Further, as to the disposition of the concave portions in the static electricity removing apparatus for footwear bottom and the static electricity removing footwear bottom of the invention, it is not limited only to one having the concave portions in three places shown in the
embodiment 1 to theembodiment 3 and, as shown in Fig.8 and Fig.9, it can be also made, for example, into many circular concave portions, plural band-like concave portions and the like. - Additionally, as shown in Fig.10, to a
groove 81 previously formed in aground contacting face 80 of afootwear bottom 8 of a ready-made footwear, there is attached the staticelectricity removing sheet 2, which is thinner than a depth of thegroove 81 and in which the corona discharge can occur. By cutting thesheet 2 to a size fitting into thegroove 81 to thereby bring about a state that theouter face 20 of the staticelectricity removing sheet 2 is concaved below the ground contacting face, it is also possible to perform the electricity removal of thefootwear bottom 8. - As mentioned above, in the invention, as the static electricity removing sheet in which the corona discharge is made (the electricity removing means), there is used the nonwoven fabric consisting of organic conductive fibers (trademark: THUNDERON) in which surfaces of acrylic fibers are covered by coatings of copper sulfide, but it is not necessarily limited to this. For example, like conductive fibers (trademark: SOLDION) whose basic materials are polyethylene terephthalate cotton, pulp and carbon and in which conductive substances are mixed, and like carbon fibers, etc., if the fibers are ones which can obtain the electricity removing effect by the corona discharge, may also be used.
- Whichever fibers are used, there is brought about the very excellent advantage that the corona discharge can be effectively performed by the characteristic construction of the invention. This is true when the construction comprises the
basal plate 1 having on itsinner face 13 the attaching means for theground contacting face 70 of thefootwear bottom 7 and the staticelectricity removing sheet 2 in which the corona discharge is made (the electricity removing means) is formed in theground contacting face 10 of thebasal plate 1, and theconcave portion 11 is deeper than the thickness of the static electricity removing sheet, and the step difference concaved below theground contacting face 10 of thebasal plate 1 is formed above theouter face 20 of the staticelectricity removing sheet 2 by attaching the staticelectricity removing sheet 2 to thebottom face 12 of theconcave portion 11 through the bonding means. The benefit also applies to the construction in which thestep difference 34 concaved below theground contacting face 30 of thefootwear bottom 3 is formed above theouter face 20 of the staticelectricity removing sheet 2 by forming theconcave portion 31 deeper than the thickness of the staticelectricity removing sheet 2 in the ground contacting face of thefootwear bottom 3 and attaching the staticelectricity removing sheet 2, so that the corona discharge is made by the electricity removing means, to thebottom face 32 of theconcave portion 31 through the bonding means. The benefit also applies to the construction in which, to thegroove 81 previously formed in theground contacting face 80 of thefootwear bottom 8, there is attached the staticelectricity removing sheet 2, which is thinner than the depth of thegroove 81 and in which the corona discharge is made by the electricity removing means, to thereby bring about the state that theouter face 20 of the staticelectricity removing sheet 2 is concaved below the ground contacting face. Since the staticelectricity removing sheet 2 does not contact with the ground, the feeling experienced by the wearer is not adversely affected irrespective of the degree of hardness of the staticelectricity removing sheet 2 and, because the static electricity removing sheet is positioned so as to form the space in the vicinity of the footwear bottom, the static electricity removing sheet is not contaminated and is not abraded.
Claims (5)
- A static electricity removing apparatus for a footwear bottom, comprising:a basal plate having at its inner face an attaching means for a ground contacting face of a footwear bottom;a static electricity removing sheet in which a corona discharge is made as an electricity removing means;a concave portion deeper than a thickness of the static electricity removing sheet, formed in a ground contacting face of the basal plate, wherein the static electricity removing sheet is attached to a bottom face of the concave portion through a bonding means; anda step difference concaved from the ground contacting face of the basal plate to an outer face of the static electricity removing sheet.
- A static electricity removing apparatus for footwear bottom according to claim 1, wherein a flange is formed at an edge of the concave portion, and an edge of the static electricity removing sheet is covered by the flange.
- A static electricity removing footwear bottom, comprising:a concave portion formed in a ground contacting face of the footwear bottom and deeper than a thickness of a static electricity removing sheet in which a corona discharge is made as an electricity removing means, wherein the static electricity removing sheet is attached to a bottom face of the concave portion through a bonding means; anda step difference concaved from the ground contacting face of the footwear bottom to an outer face of the static electricity removing sheet.
- A static electricity removing footwear bottom according to claim 3, wherein a flange is formed at an edge of the concave portion, and an edge of the static electricity removing sheet is covered by the flange.
- An electricity removing method for a footwear bottom, comprising attaching to a groove previously formed in a ground contacting face of a footwear bottom a static electricity removing sheet which is thinner than a depth of the groove and in which a corona discharge is made as an electricity removing means, and the attachment is such that an outer face of the static electricity removing sheet is concaved relative to the ground contacting face.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002331544 | 2002-11-15 | ||
JP2002331544A JP3915095B2 (en) | 2002-11-15 | 2002-11-15 | Footwear bottom static eliminator and antistatic footwear bottom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1419708A1 true EP1419708A1 (en) | 2004-05-19 |
EP1419708B1 EP1419708B1 (en) | 2006-08-02 |
Family
ID=32171402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03257221A Expired - Lifetime EP1419708B1 (en) | 2002-11-15 | 2003-11-17 | Static electricity removing apparatus for footwear bottom, static electricity removing footwear bottom and electricity removing method of footwear bottom |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040128864A1 (en) |
EP (1) | EP1419708B1 (en) |
JP (1) | JP3915095B2 (en) |
KR (1) | KR20040042891A (en) |
CN (1) | CN1505996A (en) |
DE (1) | DE60307201D1 (en) |
TW (1) | TW200412869A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2535082C2 (en) * | 2013-03-21 | 2014-12-10 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ ВСЕРОССИЙСКИЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ И ИСПЫТАТЕЛЬНЫЙ ИНСТИТУТ МЕДИЦИНСКОЙ ТЕХНИКИ ФЕДЕРАЛЬНОЙ СЛУЖБЫ ПО НАДЗОРУ В СФЕРЕ ЗДРАВООХРАНЕНИЯ (ФГБУ "ВНИИИМТ" Росздравнадзора) | Mokhsogol therapeutic-diagnostic static eliminator for humans and animals |
US20190183210A1 (en) * | 2016-08-30 | 2019-06-20 | Ansell Limited | Conductive soles for protective suits |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070048655A (en) * | 2004-07-28 | 2007-05-09 | 모리토 가부시키가이샤 | Static eliminating function-carrying footwear |
US7373739B2 (en) * | 2005-12-21 | 2008-05-20 | Brown Shoe Company, Inc. | Shoe sole having fabric and method for adhering fabric to shoe sole |
WO2009091236A1 (en) * | 2008-01-18 | 2009-07-23 | Kek Hing Kow | An electrostatic discharge shoe cover |
WO2013029222A1 (en) * | 2011-08-26 | 2013-03-07 | Esd Technology Consulting & Licensing Co., Ltd | Method and structure for reducing body static voltage |
USD780415S1 (en) * | 2016-01-11 | 2017-03-07 | Nike, Inc. | Shoe outsole |
CN114060778A (en) * | 2021-12-03 | 2022-02-18 | 昆山市美田精密工业有限公司 | Anti-static LED heat dissipation substrate |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993932A (en) * | 1976-01-16 | 1976-11-23 | Weigl John W | Antistatic footwear |
FR2343438A1 (en) * | 1976-03-11 | 1977-10-07 | Huth Walter | Working or safety shoe with antistatic sole - has intermediate layer connected to earth when walking or standing |
EP1186403A1 (en) * | 2000-09-07 | 2002-03-13 | Suolificio Romagnolo SNC | Method for obtaining thermoplastic material shoes which discharge static electricity permanently |
EP1203539A1 (en) * | 2000-11-03 | 2002-05-08 | Novel Worldwide Trading Co., Ltd. | An antistatic shoe sole |
-
2002
- 2002-11-15 JP JP2002331544A patent/JP3915095B2/en not_active Expired - Lifetime
-
2003
- 2003-11-10 US US10/704,135 patent/US20040128864A1/en not_active Abandoned
- 2003-11-10 TW TW092131424A patent/TW200412869A/en unknown
- 2003-11-14 KR KR1020030080482A patent/KR20040042891A/en not_active Application Discontinuation
- 2003-11-14 CN CNA2003101161159A patent/CN1505996A/en active Pending
- 2003-11-17 EP EP03257221A patent/EP1419708B1/en not_active Expired - Lifetime
- 2003-11-17 DE DE60307201T patent/DE60307201D1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993932A (en) * | 1976-01-16 | 1976-11-23 | Weigl John W | Antistatic footwear |
FR2343438A1 (en) * | 1976-03-11 | 1977-10-07 | Huth Walter | Working or safety shoe with antistatic sole - has intermediate layer connected to earth when walking or standing |
EP1186403A1 (en) * | 2000-09-07 | 2002-03-13 | Suolificio Romagnolo SNC | Method for obtaining thermoplastic material shoes which discharge static electricity permanently |
EP1203539A1 (en) * | 2000-11-03 | 2002-05-08 | Novel Worldwide Trading Co., Ltd. | An antistatic shoe sole |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2535082C2 (en) * | 2013-03-21 | 2014-12-10 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ ВСЕРОССИЙСКИЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ И ИСПЫТАТЕЛЬНЫЙ ИНСТИТУТ МЕДИЦИНСКОЙ ТЕХНИКИ ФЕДЕРАЛЬНОЙ СЛУЖБЫ ПО НАДЗОРУ В СФЕРЕ ЗДРАВООХРАНЕНИЯ (ФГБУ "ВНИИИМТ" Росздравнадзора) | Mokhsogol therapeutic-diagnostic static eliminator for humans and animals |
US20190183210A1 (en) * | 2016-08-30 | 2019-06-20 | Ansell Limited | Conductive soles for protective suits |
US10897955B2 (en) * | 2016-08-30 | 2021-01-26 | Ansell Limited | Conductive soles for protective suits |
Also Published As
Publication number | Publication date |
---|---|
KR20040042891A (en) | 2004-05-20 |
JP2004160043A (en) | 2004-06-10 |
CN1505996A (en) | 2004-06-23 |
JP3915095B2 (en) | 2007-05-16 |
TW200412869A (en) | 2004-08-01 |
DE60307201D1 (en) | 2006-09-14 |
US20040128864A1 (en) | 2004-07-08 |
EP1419708B1 (en) | 2006-08-02 |
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