WO2023286647A1 - 作業靴 - Google Patents
作業靴 Download PDFInfo
- Publication number
- WO2023286647A1 WO2023286647A1 PCT/JP2022/026563 JP2022026563W WO2023286647A1 WO 2023286647 A1 WO2023286647 A1 WO 2023286647A1 JP 2022026563 W JP2022026563 W JP 2022026563W WO 2023286647 A1 WO2023286647 A1 WO 2023286647A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outsole
- heel
- thick
- thickness
- hollow structure
- Prior art date
Links
- 238000000465 moulding Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/02—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting
Definitions
- the present invention relates to work shoes using soles that are resistant to slipping due to, for example, water, oil, and the like.
- shoe soles include an outsole having a block design with a plurality of irregularities of a predetermined shape and a midsole having a hardness equal to or greater than that of the outsole (see, for example, Patent Document 2). ).
- the thickness of the outsole from the tip (toe) to the rear end (heel) is not constant, and in particular, the thickness gradually increases from the stepping portion to the heel. , each block of the sole is not uniformly pressurized, resulting in an unstable anti-slip effect.
- the present invention is formed by two-color molding comprising an upper, a base portion joined to the bottom portion of the upper, and an outsole having a block design formed on the bottom surface of the base portion.
- the thickness of the base portion of the outsole is uniform over substantially the entire surface, and the base portion of the outsole is formed to have a thickness equal to or thinner than the thickness of the bottom portion of the upper.
- a hollow structure is provided in the heel of the shoe, and the hollow structure is open at the top and has a thick portion formed on a part of the bottom surface.
- the inventor of the present invention developed a three-color molded product consisting of an upper, a midsole, and an outsole, and The following results were obtained when a comparison test was conducted with a two-color molded product.
- the thickness of the heel portion of the outsole is 9 mm for the three-color molded product and 23.5 mm for the two-color molded product.
- the coefficient of dynamic friction of both was measured, it was about 0.41 for the three-color molded product and about 0.28 for the two-color molded product.
- an outsole with a heel thickness of 9 mm has better sensory slip resistance than an outsole with a heel thickness of 23.5 mm, and a thinner outsole with a heel thickness of 9 mm provides higher slip resistance. was found.
- the present invention is based on the above knowledge, and by forming the thickness of the base portion of the outsole uniformly over substantially the entire surface, the thickness of the heel portion of the outsole can be easily reduced, resulting in high slip resistance. It is possible to provide a shoe sole that stably obtains
- the heel height if the heel part has a certain height when walking, the center of gravity will be easier to move forward, and you will be able to walk forward more easily.
- the heel height plays a role in distributing and averaging the weight over the sole of the foot. Therefore, considering the ease of walking, fatigue reduction, comfort, and safety of work shoes, the distance between the stepping part and the heel part of the work shoe last is set to an average heel tolerance of 10 mm to 15 mm. is preferred.
- the thickness of the heel portion of the upper bottom must be increased.
- the heel portion of the upper bottom is thickened, the upper will not cool sufficiently in the order in which the injection molding of the upper is followed by the injection molding of the outsole, and a good molding result cannot be obtained.
- the thickness of the outsole can be made uniform while maintaining the heel height, and the entire surface can be uniformly pressurized.
- the slip resistance is improved.
- the weight can be reduced by the hollow structure.
- the hollow structural portion of the upper bottom portion includes, as the thick portion, a grid-like first thick portion rising from the bottom surface of the hollow structural portion, and an inner bottom surface partitioned by the first thick portion. It is preferable to have a grid-shaped second thick part protruding from the.
- the heel of a work shoe is the part that starts contacting the ground when walking, and is also a part where a load is applied during standing work. If it becomes too large, it may become slippery.
- FIG. 1 is an explanatory cross-sectional view of a work shoe according to a positional embodiment of the present invention; Explanatory sectional drawing which shows the hollow structure part in this embodiment.
- FIG. 2 is an explanatory plan view showing the hollow structural portion in the embodiment;
- a work shoe 1 in this embodiment is a boot formed by injection molding, and includes an upper 2 and an outsole 3 as shown in cross section in FIG.
- the upper 2 and the outsole 3 are formed by two-color molding.
- a flat insole is used.
- the upper 2 has a bottom portion 21 and an outsole 3 is provided on the lower surface of the bottom portion 21 .
- the outsole 3 includes a base portion 31 joined to the bottom portion 21 of the upper 2 and a plurality of projections 32 forming a block design formed below the base portion 31 .
- the work shoe 1 of the present embodiment has a shoe sole composed of the bottom portion 21 of the upper 2 and the outsole 3 .
- the base portion 31 of the outsole 3 has a uniform thickness from the toe portion 10 to the heel portion 12 through the stepping portion 11 . Furthermore, the base portion 31 of the outsole 3 is formed to be equal to or thinner than the bottom portion 21 of the upper 2 .
- a hollow structural portion 22 is formed in the heel portion 12 of the bottom portion 21 of the upper 2, as shown in FIGS. As shown in FIG. 2 , the hollow structural portion 22 has a first thick portion 23 standing from its bottom surface and a second thick portion 24 projecting smaller than the first thick portion 23 .
- FIG. 3 is a plan view of the heel shown in FIG.
- the first thick portion 23 is formed in a grid shape that partitions the hollow structure portion 22 into a plurality of regions.
- a grid-shaped second thick portion 24 smaller than the thick portion 23 is formed.
- the thickness of the heel portion 12 of the outsole 3 can be reduced (for example, 9 mm) by two-color molding. Then, when the construction of the work shoe 1 according to this embodiment was adopted and the thickness of the heel portion 12 of the outsole 3 was set to 9 mm, the coefficient of dynamic friction was measured to be about 0.48, which is the National Institute of Occupational Safety and Health. Technical Guideline JNIOSH-TR-NO.41 Safety Shoes/Work Shoes Technical Guideline 2.2 Shows 5 categories and the highest category with a dynamic friction coefficient of 0.30 or more in slip resistance, and it can be confirmed that the perceived slip resistance is good. rice field.
- the thickness dimension of the base portion 31 of the outsole 3 is uniform from the toe portion 10 to the heel portion 12, and the entire surface can be uniformly pressurized, thereby improving slip resistance.
- the heel portion 12 of the bottom portion 21 of the upper 2 is provided with the hollow structure portion 22, the heel portion 12 of the outsole 3 can be made thin while providing an appropriate heel height. High slip resistance can be obtained.
- the hollow structure 22 of the bottom 21 of the upper 2 reduces the weight of the shoe sole, allowing more comfortable walking.
- working boots have been described as the working shoes 1, but the shape of the upper other than the bottom portion 21 is not limited to this.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims (2)
- アッパーと、該アッパーの底部に接合されるベース部及び該ベース部の底面に形成されたブロック意匠を有するアウトソールとを備える2色成形によって形成された作業靴において、
前記アウトソールは、前記ベース部の肉厚が略全面にわたって均一に形成され、
アウトソールのベース部は、アッパーの底部の肉厚と比べて同等或いは薄く形成され、
前記アッパー底部の踵部に、中空構造部を備え、
前記中空構造部は、上部が開口していると共に、底面上の一部に形成された肉厚部を備えることを特徴とする作業靴。 - 前記アッパー底部の前記中空構造部は、前記肉厚部として、該中空構造部の底面から起立する格子状の第1肉厚部と、該第1肉厚部によって区画された内側の底面から突出する格子状の第2肉厚部とを備えることを特徴とする請求項1記載の作業靴。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237030877A KR20230146568A (ko) | 2021-07-16 | 2022-07-04 | 작업 신발 |
CN202280021521.8A CN117042648A (zh) | 2021-07-16 | 2022-07-04 | 作业鞋 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021118092A JP7072947B1 (ja) | 2021-07-16 | 2021-07-16 | 作業靴 |
JP2021-118092 | 2021-07-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023286647A1 true WO2023286647A1 (ja) | 2023-01-19 |
Family
ID=81707783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/026563 WO2023286647A1 (ja) | 2021-07-16 | 2022-07-04 | 作業靴 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP7072947B1 (ja) |
KR (1) | KR20230146568A (ja) |
CN (1) | CN117042648A (ja) |
WO (1) | WO2023286647A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS2711252Y1 (ja) * | 1951-11-09 | 1952-11-09 | ||
JPS5844907U (ja) * | 1981-09-19 | 1983-03-25 | 株式会社アサヒコーポレーション | 靴底 |
JPH09191903A (ja) * | 1996-01-12 | 1997-07-29 | Midori Anzen Co Ltd | 安全地下足袋とその製造方法 |
JP2002238601A (ja) * | 2001-02-22 | 2002-08-27 | Rikio:Kk | 地下たび |
JP2004160064A (ja) * | 2002-11-15 | 2004-06-10 | Shimano Inc | 釣用靴 |
JP2005288159A (ja) * | 2004-03-12 | 2005-10-20 | Midori Anzen Co Ltd | 耐滑靴底 |
JP2009247439A (ja) * | 2008-04-02 | 2009-10-29 | Shimano Inc | 釣り用ブーツ |
JP2010162259A (ja) * | 2009-01-19 | 2010-07-29 | Shimano Inc | 釣り用履き物 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3451205B2 (ja) | 1998-10-05 | 2003-09-29 | ミドリ安全株式会社 | 耐滑靴底 |
JP3553041B2 (ja) | 2001-11-21 | 2004-08-11 | ミドリ安全株式会社 | 耐滑靴底 |
-
2021
- 2021-07-16 JP JP2021118092A patent/JP7072947B1/ja active Active
-
2022
- 2022-07-04 WO PCT/JP2022/026563 patent/WO2023286647A1/ja active Application Filing
- 2022-07-04 CN CN202280021521.8A patent/CN117042648A/zh active Pending
- 2022-07-04 KR KR1020237030877A patent/KR20230146568A/ko unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS2711252Y1 (ja) * | 1951-11-09 | 1952-11-09 | ||
JPS5844907U (ja) * | 1981-09-19 | 1983-03-25 | 株式会社アサヒコーポレーション | 靴底 |
JPH09191903A (ja) * | 1996-01-12 | 1997-07-29 | Midori Anzen Co Ltd | 安全地下足袋とその製造方法 |
JP2002238601A (ja) * | 2001-02-22 | 2002-08-27 | Rikio:Kk | 地下たび |
JP2004160064A (ja) * | 2002-11-15 | 2004-06-10 | Shimano Inc | 釣用靴 |
JP2005288159A (ja) * | 2004-03-12 | 2005-10-20 | Midori Anzen Co Ltd | 耐滑靴底 |
JP2009247439A (ja) * | 2008-04-02 | 2009-10-29 | Shimano Inc | 釣り用ブーツ |
JP2010162259A (ja) * | 2009-01-19 | 2010-07-29 | Shimano Inc | 釣り用履き物 |
Also Published As
Publication number | Publication date |
---|---|
JP2023013717A (ja) | 2023-01-26 |
KR20230146568A (ko) | 2023-10-19 |
CN117042648A (zh) | 2023-11-10 |
JP7072947B1 (ja) | 2022-05-23 |
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