JPH0374202A - Static electricity neutralizing tire - Google Patents
Static electricity neutralizing tireInfo
- Publication number
- JPH0374202A JPH0374202A JP1210373A JP21037389A JPH0374202A JP H0374202 A JPH0374202 A JP H0374202A JP 1210373 A JP1210373 A JP 1210373A JP 21037389 A JP21037389 A JP 21037389A JP H0374202 A JPH0374202 A JP H0374202A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- static electricity
- carbon fibers
- fibers
- mixed
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 title claims abstract description 19
- 230000003472 neutralizing effect Effects 0.000 title claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 9
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 6
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 6
- 229920001194 natural rubber Polymers 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 5
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract 2
- 239000005061 synthetic rubber Substances 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 12
- 239000005060 rubber Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/08—Electric-charge-dissipating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は静電気中和タイヤに関し、たとえば静電気の発
生が電磁波障害となって誤作動を起こしやすい作業工程
現場の無人搬送車のタイヤとして利用されるものである
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a static electricity neutralizing tire, which is used, for example, as a tire for automatic guided vehicles at work sites where static electricity generation causes electromagnetic interference and tends to cause malfunctions. It is something that
近来、工場においては作業効率を向上させる目的で無人
搬送車が多用されるに至った。In recent years, automatic guided vehicles have come into widespread use in factories to improve work efficiency.
この無人搬送車は車に組み込まれた、あるいは遠隔の指
令室からの電気的指令により所定の動作を行なうが、タ
イヤと床面との摩擦により静電気が発生する。This automatic guided vehicle performs predetermined operations based on electrical commands from a command center built into the vehicle or from a remote location, but static electricity is generated due to friction between the tires and the floor surface.
無人搬送車のタイヤは通常ソリッドタイヤであるが、例
えば精密加工を行なう工場においては塵埃、雑菌等の混
入を防止する必要があり、そのために床面を汚さないよ
うにカーボンを混入しないゴム、あるいはポリウレタン
等で構成される場合が多い。Tires for automatic guided vehicles are usually solid tires, but in factories that carry out precision processing, for example, it is necessary to prevent dust and germs from getting in, so tires that do not contain carbon are used to avoid contaminating the floor surface. It is often made of polyurethane or the like.
ところが、非カーボン系のタイヤは特に静電気の発生が
激しく、電気系統に電磁波障害を発生させ、それが誤作
動の原因になることが多かった。However, non-carbon tires generate a particularly large amount of static electricity, which can cause electromagnetic interference in electrical systems, often causing malfunctions.
無人搬送車のタイヤから発生する静電気を除去する方法
として、アースをとったり、除電ブラシを設けることが
一部なされているが、これらの方法は発生した静電気を
その後に除去しようとする発想であり、除去が完全でな
いと電磁波障害が起きてしまう欠点がある。Some methods of removing static electricity generated from the tires of automatic guided vehicles include grounding or installing static electricity removal brushes, but these methods are based on the idea of removing the generated static electricity afterward. The drawback is that electromagnetic interference may occur if removal is not complete.
そしてアースをとる方法は、搬送車自体が移動＝１−
２
するので、完全なアースが困難であること、除電ブラシ
はブラシの性能、取付は位置によって効果がばらつき、
いまだ満足のいくものではなかった。The method of grounding is difficult because the transport vehicle itself moves = 1-2, and the effectiveness of the static elimination brush varies depending on the performance of the brush and the position of the installation.
It was still not satisfactory.
そこで、本発明は静電気そのものの発生を抑制するタイ
ヤ、即ち、静電気中和タイヤを提供することを課題とす
るものである。Therefore, an object of the present invention is to provide a tire that suppresses the generation of static electricity itself, that is, a static electricity neutralizing tire.
本発明の課題を解決するための手段は次のとおりである
。Means for solving the problems of the present invention are as follows.
即ち、本発明に係る静電気中和タイヤはポリウレタン、
台底ゴム又は天然ゴムからなるタイヤにおいて、繊維長
１〜１．０＋ｎｎ＋の炭素繊維が０．００５〜］−〇重
量％の範囲で混入され、かつ各炭素繊維が相互に接触し
、先端の一部がタイヤの外周面に臨む如く配合している
ことを特徴とするものである。That is, the static electricity neutralizing tire according to the present invention is made of polyurethane,
In a tire made of base rubber or natural rubber, carbon fibers with a fiber length of 1 to 1.0+nn+ are mixed in a range of 0.005 to ]-0% by weight, and the carbon fibers are in contact with each other, and the tips are It is characterized by being blended so that the outer circumferential surface of the tire faces the outer circumferential surface of the tire.
以下、本発明を更に具体的に説明する。The present invention will be explained in more detail below.
本発明に用いられるタイヤのベースゴムはポリウレタン
、台底ゴム又は天然ゴムであり、ポリウレタンの種類は
特に限定されないが、耐荷重性の大きい熱硬化性のもの
が好ましい。台底ゴムはジエン系、オレフィン系、シリ
コーン系あるいは他のエラストマーでも良い。天然ゴム
も使用できるが、カーボンを入れると床面が汚れるので
、通フ；を酸化ケイ素（ホワイトカーボン）等の充填剤
、補強剤を混入して用いられる。The base rubber of the tire used in the present invention is polyurethane, sole rubber or natural rubber, and the type of polyurethane is not particularly limited, but thermosetting ones with high load resistance are preferred. The bottom rubber may be diene-based, olefin-based, silicone-based, or other elastomer. Natural rubber can also be used, but since adding carbon will stain the floor surface, rubber is used by mixing fillers and reinforcing agents such as silicon oxide (white carbon).
ベースゴムに混入される炭素繊維は市販のアクリル系、
ピッチ系のものが使用可能であるが平均繊維長が１〜１
０１ｍ＋である必要がある。この繊維長はタイヤの中に
混入されている状態での長さである。そしてこれらの繊
維はタイヤに対して相互に接触する状態にて混入してい
る必要がある。The carbon fiber mixed into the base rubber is commercially available acrylic,
Pitch-based materials can be used, but the average fiber length is 1 to 1.
It must be 01m+. This fiber length is the length when the fiber is mixed into a tire. These fibers must be mixed into the tire in such a way that they are in contact with each other.
繊維の平均長が１ｍｍより短かいと、炭素繊維間の接触
が困難となり、制電効果（静電気中和効果）が減少し、
また１０ｍｍを越えると繊維同士の過剰な絡み合いが起
こり、好ましくない。そして好ましい範囲は３〜６ｍで
ある。また、繊維の繊度は１〜５デニールで捲縮してい
ない素直なものが好ましい。If the average length of the fibers is shorter than 1 mm, contact between the carbon fibers becomes difficult, and the antistatic effect (static neutralization effect) decreases.
Moreover, if it exceeds 10 mm, excessive entanglement of fibers will occur, which is not preferable. The preferred range is 3 to 6 m. Further, the fineness of the fibers is preferably 1 to 5 deniers and is uncrimped and straight.
一方、この炭素繊維の一部はタイヤの外周方向４
に配合していること、そして同繊維の一部は、その先端
部がタイヤの外周面に臨む状態にあることが必要がある
。つまり、各繊維は適度に絡み合って相互に接触する状
態になっている必要があり、これが完全にランダムに配
合されていたり、各繊維が折れ曲がっていると制電性効
果（静電気中和効果）が得られない。On the other hand, it is necessary that some of the carbon fibers be blended in the outer circumferential direction 4 of the tire, and that some of the fibers should have their tips facing the outer circumferential surface of the tire. In other words, each fiber must be properly intertwined and in contact with each other, and if they are mixed completely randomly or if each fiber is bent, the antistatic effect (static neutralization effect) will be reduced. I can't get it.
炭素繊維をタイヤの周方向に配合させ、その先端の一部
をタイヤの外周面に臨ませる方法は特に限定されないが
、繊維を混入するとき、大きなシェアをかけて混練する
と繊維が折れて短かくなるので成形前のゴム、又は樹脂
の粘度がある程度低く、流動性を有することが好ましい
。There are no particular limitations on the method of blending carbon fibers in the circumferential direction of the tire, with a portion of the tips facing the outer circumferential surface of the tire, but if the fibers are mixed in with a large shear, the fibers may break and become short. Therefore, it is preferable that the viscosity of the rubber or resin before molding is low to some extent and has fluidity.
炭素繊維を混入し、それ程、激しい混線を行なわず、型
に注入することによって炭素繊維を上記の様に相互に接
触し、且つその先端の一部をタイヤの外周面に臨ませる
ことができる。By mixing carbon fibers and injecting them into a mold without causing too much crosstalk, the carbon fibers can be brought into contact with each other as described above, and a portion of their tips can be exposed to the outer peripheral surface of the tire.
また、炭素繊維は単独で混入することもできるが、たと
えば炭素繊維と他の合成繊維を混合して神々の手段でシ
ー１〜状にした静電気中和材を混入すると取扱いも容易
で好ましい。Further, although carbon fibers can be mixed alone, it is preferable to mix carbon fibers with other synthetic fibers to form a static electricity neutralizing material into the shape of sheet 1, for example, because it is easy to handle.
炭素繊維の混入量はタイヤの全組成物に対して０．００
５〜１０重量％であるが、発明者の実験によれば、用い
るペースポリマーによって最適範囲が異なる傾向にある
。たとえばポリウレタンの場合は０．００５〜５重量％
が好ましく、ゴムの場合は３〜１０重量％が好ましい。The amount of carbon fiber mixed is 0.00 based on the total composition of the tire.
The amount is 5 to 10% by weight, but according to the inventor's experiments, the optimum range tends to vary depending on the pace polymer used. For example, in the case of polyurethane, it is 0.005 to 5% by weight.
is preferable, and in the case of rubber, 3 to 10% by weight is preferable.
これは元来、樹脂やゴムの有する電気抵抗の相違に加え
、混入時の炭素繊維の折れ方、配合の程度にも起因する
と考えられる。This is thought to be originally due to the difference in electrical resistance of the resin and rubber, as well as the way the carbon fibers are bent when mixed and the degree of blending.
この他、本発明のタイヤには通常の充填剤、補強剤等を
混入しても良い。In addition, ordinary fillers, reinforcing agents, etc. may be mixed into the tire of the present invention.
炭素繊維が導電性であることはよく知られているが、本
発明においては混入された炭素繊維がある程度の長さを
有し、これらの大部分が相互に接触し、且つその先端の
一部がタイヤの外周面に臨む如く配合しているので、発
生する静電気をベースゴムにイＩＦ電させることがなく
、そのまま、表面から大気中に放電するため、いわゆる
静電気が発生しない状態を保持できるものと考えられる
。It is well known that carbon fibers are conductive, but in the present invention, the mixed carbon fibers have a certain length, most of them are in contact with each other, and a part of their tips are Since it is formulated so that it faces the outer circumferential surface of the tire, the generated static electricity is not transferred to the base rubber and is directly discharged from the surface into the atmosphere, so it is possible to maintain a state in which so-called static electricity does not occur. it is conceivable that.
ポリウレタンおよび天然ゴムを用いて炭素繊維を混入さ
せたものと炭素繊維を入れなかったもののタイヤを形成
し、その電気的性能を測定し、次の表の結果を得た。Tires with and without carbon fibers were formed using polyurethane and natural rubber and their electrical performance was measured, with the results shown in the following table.
表
に示した。ポリウレタンからなるタイヤ］−の中に炭素
繊維２が相互に接触し、且つその先端の一部がタイヤの
外周面に臨む如く配合しているのが観察できる。Shown in the table. It can be observed that the carbon fibers 2 are in contact with each other in the tire made of polyurethane and are blended so that a part of their tips face the outer peripheral surface of the tire.
第工図は本発明に係るソリッドタイヤの一部切欠正面図
である。
工・・・ソリッドタイヤ、２・・・炭素繊維。The first drawing is a partially cutaway front view of a solid tire according to the present invention. Engineering: solid tire, 2: carbon fiber.
Claims (1)
リッドタイヤにおいて、繊維長１〜１０ｍｍの炭素繊維
が０．００５〜１０重量％の範囲で混入され、かつ各炭
素繊維が相互に接触し、先端の一部がタイヤの外周面に
臨む如く配合していることを特徴とする静電気中和タイ
ヤ。(1) In a solid tire made of polyurethane, synthetic rubber, or natural rubber, carbon fibers with a fiber length of 1 to 10 mm are mixed in a range of 0.005 to 10% by weight, and the carbon fibers are in contact with each other and at the tip. A static electricity neutralizing tire characterized in that a part of the compound is blended so as to face the outer circumferential surface of the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210373A JPH0374202A (en) | 1989-08-15 | 1989-08-15 | Static electricity neutralizing tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210373A JPH0374202A (en) | 1989-08-15 | 1989-08-15 | Static electricity neutralizing tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0374202A true JPH0374202A (en) | 1991-03-28 |
Family
ID=16588278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1210373A Pending JPH0374202A (en) | 1989-08-15 | 1989-08-15 | Static electricity neutralizing tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0374202A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518055A (en) * | 1994-09-20 | 1996-05-21 | Michelin Recherche Et Technique S.A. | Low resistivity tire with silica-rich tread and at least one electrostatic discharge ring |
| US5718781A (en) * | 1995-06-07 | 1998-02-17 | The Goodyear Tire & Rubber Company | Tire having silica reinforced rubber tread containing carbon fibers |
| WO1998040229A1 (en) * | 1997-03-10 | 1998-09-17 | The Goodyear Tire & Rubber Company | Tire with electrically oriented composite |
| EP0878330A2 (en) * | 1997-05-12 | 1998-11-18 | Sumitomo Rubber Industries Limited | Vehicle tyre |
| JP2006219022A (en) * | 2005-02-10 | 2006-08-24 | Nippon Rubber Kagaku Kk | Elastic conductive wheel and its manufacturing method |
| WO2011115564A1 (en) * | 2010-03-18 | 2011-09-22 | Bt Products Ab | Insdustrial truck |
| JP2017001602A (en) * | 2015-06-15 | 2017-01-05 | 住友ゴム工業株式会社 | Non-pneumatic tire |
| CN108290442A (en) * | 2015-11-20 | 2018-07-17 | 米其林集团总公司 | Electrostatic discharging element for non-inflatable tyre |
| WO2019008965A1 (en) * | 2017-07-06 | 2019-01-10 | 村田機械株式会社 | Traveling body system |
| CN109414960A (en) * | 2016-07-08 | 2019-03-01 | 大陆轮胎德国有限公司 | Vehicle tyre |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102081A (en) * | 1975-03-05 | 1976-09-09 | Ohtsu Tire | |
| JPS5854354B2 (en) * | 1976-06-25 | 1983-12-03 | 株式会社細川粉体工学研究所 | Dryer |
-
1989
- 1989-08-15 JP JP1210373A patent/JPH0374202A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102081A (en) * | 1975-03-05 | 1976-09-09 | Ohtsu Tire | |
| JPS5854354B2 (en) * | 1976-06-25 | 1983-12-03 | 株式会社細川粉体工学研究所 | Dryer |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518055A (en) * | 1994-09-20 | 1996-05-21 | Michelin Recherche Et Technique S.A. | Low resistivity tire with silica-rich tread and at least one electrostatic discharge ring |
| US5718781A (en) * | 1995-06-07 | 1998-02-17 | The Goodyear Tire & Rubber Company | Tire having silica reinforced rubber tread containing carbon fibers |
| WO1998040229A1 (en) * | 1997-03-10 | 1998-09-17 | The Goodyear Tire & Rubber Company | Tire with electrically oriented composite |
| EP0878330A2 (en) * | 1997-05-12 | 1998-11-18 | Sumitomo Rubber Industries Limited | Vehicle tyre |
| EP0878330A3 (en) * | 1997-05-12 | 2000-10-18 | Sumitomo Rubber Industries Limited | Vehicle tyre |
| US6302173B1 (en) | 1997-05-12 | 2001-10-16 | Sumitomo Rubber Industries, Limited | Vehicle tire including conductive rubber |
| JP2006219022A (en) * | 2005-02-10 | 2006-08-24 | Nippon Rubber Kagaku Kk | Elastic conductive wheel and its manufacturing method |
| WO2011115564A1 (en) * | 2010-03-18 | 2011-09-22 | Bt Products Ab | Insdustrial truck |
| JP2017001602A (en) * | 2015-06-15 | 2017-01-05 | 住友ゴム工業株式会社 | Non-pneumatic tire |
| CN108290442A (en) * | 2015-11-20 | 2018-07-17 | 米其林集团总公司 | Electrostatic discharging element for non-inflatable tyre |
| CN108290442B (en) * | 2015-11-20 | 2021-09-21 | 米其林集团总公司 | Electrostatic discharge element for non-pneumatic tire |
| CN113733818A (en) * | 2015-11-20 | 2021-12-03 | 米其林集团总公司 | Electrostatic discharge element for non-pneumatic tire |
| CN113733818B (en) * | 2015-11-20 | 2024-03-26 | 米其林集团总公司 | Electrostatic discharge element for non-pneumatic tire |
| CN109414960A (en) * | 2016-07-08 | 2019-03-01 | 大陆轮胎德国有限公司 | Vehicle tyre |
| CN109414960B (en) * | 2016-07-08 | 2021-06-11 | 大陆轮胎德国有限公司 | Vehicle tyre |
| WO2019008965A1 (en) * | 2017-07-06 | 2019-01-10 | 村田機械株式会社 | Traveling body system |
| JPWO2019008965A1 (en) * | 2017-07-06 | 2020-04-23 | 村田機械株式会社 | Traveling system |
| TWI765066B (en) * | 2017-07-06 | 2022-05-21 | 日商村田機械股份有限公司 | running body system |
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