JPH0415330A - Brake shoe for synthetic resin wheel of bicycle - Google Patents
Brake shoe for synthetic resin wheel of bicycleInfo
- Publication number
- JPH0415330A JPH0415330A JP11811190A JP11811190A JPH0415330A JP H0415330 A JPH0415330 A JP H0415330A JP 11811190 A JP11811190 A JP 11811190A JP 11811190 A JP11811190 A JP 11811190A JP H0415330 A JPH0415330 A JP H0415330A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- reinforcing material
- brake shoe
- wheel
- fiber
- 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
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 11
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 11
- 239000012779 reinforcing material Substances 0.000 claims abstract description 34
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 6
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 5
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 4
- 229920001194 natural rubber Polymers 0.000 claims abstract description 4
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 3
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 abstract description 31
- 239000005060 rubber Substances 0.000 abstract description 31
- 239000000835 fiber Substances 0.000 abstract description 14
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 6
- 239000004952 Polyamide Substances 0.000 abstract description 5
- 229920002647 polyamide Polymers 0.000 abstract description 5
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 3
- 229910052796 boron Inorganic materials 0.000 abstract description 3
- 239000004917 carbon fiber Substances 0.000 abstract description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 2
- 244000043261 Hevea brasiliensis Species 0.000 abstract description 2
- 229920006311 Urethane elastomer Polymers 0.000 abstract description 2
- -1 for example Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 abstract 1
- 239000011151 fibre-reinforced plastic Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、自転車用合成樹脂製車輪に対して使用するブ
レーキシューに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a brake shoe used for a synthetic resin bicycle wheel.
（従来の技’ＩＦ；ｔ）
近時、自転車のファッション化に伴ない硬質合成樹脂製
の車輪が使用されるようになった。この車輪は耐衝撃強
度の必要性から、硬質熱可塑性合成樹脂、例えばポリア
ミド系樹脂が使用され、更に強度向上のためガラス繊維
の短繊維等の強化材が配合添加されている。(Conventional technique 'IF;t) Recently, as bicycles have become more fashionable, wheels made of hard synthetic resin have come into use. Due to the need for impact resistance, these wheels are made of hard thermoplastic synthetic resin, such as polyamide resin, and furthermore, reinforcing materials such as short glass fibers are added to improve the strength.
ところが、前記車輪に対し、そのリムと摺接して用いら
れるブレーキシューは、一般の鋼製車輪に使用する従来
から市販されているゴム製のものである。このゴム製シ
ューも近時、ゴム組成物の耐摩耗性を向上させるため、
補強効果の高い充填剤、例えばカーボンブラック、シリ
カ等をゴムに配合したり、汎用ゴム中耐摩耗性の優れた
ポリブタジェンゴム等を使用している。However, the brake shoes used in sliding contact with the rim of the wheel are made of rubber and are conventionally available on the market for use with general steel wheels. Recently, this rubber shoe has also been developed to improve the abrasion resistance of rubber compositions.
Fillers with high reinforcing effects, such as carbon black and silica, are blended into the rubber, and polybutadiene rubber, which has excellent abrasion resistance among general-purpose rubbers, is used.
一方、ゴム中に短繊維を配合した補強ゴム複合体が特公
昭５７−３２６６８号公報で提案されている。On the other hand, a reinforced rubber composite in which short fibers are blended into rubber has been proposed in Japanese Patent Publication No. 57-32668.
（発明が解決しようとする課題）
前記のようにガラス繊維等の強化材が配合添加された合
成樹脂製車輪リムに対し、前記従来の鋼製車輪リムに使
用していたゴム製シューを使用スると、その摩耗が繁し
く、短時日のもとに制動不能となり、非常に危険な状態
になることを知見した。(Problems to be Solved by the Invention) As mentioned above, for synthetic resin wheel rims to which reinforcing materials such as glass fibers have been blended and added, the rubber shoes used in the conventional steel wheel rims are used. It was discovered that the brakes would wear out frequently and become unable to brake within a short period of time, resulting in an extremely dangerous situation.
そこで、前記特公昭５７−３２６６８号公報に提案され
たような補強ゴム複合体を用いることも考えられるが、
被制動体を考慮したものでなく、必ずしも好適な制動効
果を発揮するものでない。Therefore, it is conceivable to use a reinforcing rubber composite as proposed in the above-mentioned Japanese Patent Publication No. 57-32668.
This method does not take into consideration the object to be braked, and does not necessarily provide a suitable braking effect.
本発明は、上記に鑑み自転車用合成樹脂製車輪、特に強
化材の配合された車輪に対し、耐摩耗性能と制動性能の
優れたブレーキシューを提供することを目的とする。In view of the above, an object of the present invention is to provide a brake shoe with excellent wear resistance and braking performance for bicycle wheels made of synthetic resin, particularly wheels containing reinforcing materials.
（課題を解決するための手段）
本発明は上記の目的を達成するため手段として、硬質熱
可塑性合成樹脂中に、ガラス繊維等の強化材が均一に分
散した繊維強化熱可塑性樹脂により形成された車輪のリ
ムに摺接して使用されるプレーキンニーであって、この
ブレーキシューは天然あるいは合成ゴム中に、前記車輪
中に含まれる強化材よりも耐摩耗性の大なる強化材が含
まれたものからなる構成を採用した。(Means for Solving the Problems) As a means for achieving the above-mentioned object, the present invention provides a material made of a fiber-reinforced thermoplastic resin in which a reinforcing material such as glass fiber is uniformly dispersed in a hard thermoplastic synthetic resin. Brake shoes are used in sliding contact with the rim of a wheel, and these brake shoes are made of natural or synthetic rubber containing a reinforcing material with greater wear resistance than the reinforcing material contained in the wheel. A configuration was adopted.
（作 用）
回転する車輪のリムに対しブレーキシューを摺接すると
、両者間に動摩擦力が生ずる。このさい車輪素材中の強
化材よりもブレーキシューのゴム中に含まれる強化材の
方が耐摩耗性が大きいのでシュー表面は比較的摩耗せず
、しかもシューのゴムは、車輪側のマトリックス樹脂と
好適に摺接して両者間に大なる摩擦力が生じて制動効果
を発揮する。(Operation) When the brake shoe slides against the rim of a rotating wheel, a dynamic frictional force is generated between the two. At this time, the reinforcing material contained in the rubber of the brake shoe has greater wear resistance than the reinforcing material in the wheel material, so the surface of the shoe is relatively free from wear, and the rubber of the shoe is similar to the matrix resin on the wheel side. Suitable sliding contact creates a large frictional force between the two and exerts a braking effect.
（実施例） 以下、本発明について詳述する。(Example) The present invention will be explained in detail below.
本発明のブレーキシューが使用される自転車の車輪は、
硬質熱可塑性合成樹脂（以下マトリックス樹脂という）
中に、ガラス繊維等の強化材が均一に分散配合された繊
維強化熱可塑性樹脂（以下ＦＲＴＰという）からなる。The bicycle wheel on which the brake shoe of the present invention is used is:
Rigid thermoplastic synthetic resin (hereinafter referred to as matrix resin)
It is made of fiber-reinforced thermoplastic resin (hereinafter referred to as FRTP) in which reinforcing materials such as glass fibers are uniformly dispersed.
前記マトリックス樹脂としてはポリアミド系（ナイロン
）、ＰＥ、ＰＰ、ＰＳ、ＡＳ、ＡＢＳ、ＰＰＯ，ＰＢＴ
、ＰＥＥＫ等の樹脂を例示できる。The matrix resin includes polyamide (nylon), PE, PP, PS, AS, ABS, PPO, PBT.
Examples include resins such as , PEEK, and the like.
前記、強化材としては、ガラス繊維、ポリアミド系繊維
、カーボン繊維、ボロン繊維、炭化ケイ素繊維等の無機
、有機系繊維を例示できる。これら強化材は例えばチョ
ツプドファイバとして前記マトリックス樹脂に１０〜４
０％混入してペレット状にし、射出成形等の手段で車輪
が成形される。なお、現在市販されている車輪の殆んど
は、マトリックス樹脂としてポリアミド系樹脂中に強化
材としてガラス繊維をチヨンブドファイバ形状で混入し
たものが使用されている。Examples of the reinforcing material include inorganic and organic fibers such as glass fiber, polyamide fiber, carbon fiber, boron fiber, and silicon carbide fiber. These reinforcing materials are added to the matrix resin as chopped fibers, for example.
0% is mixed into pellets, and wheels are molded by means such as injection molding. It should be noted that most of the wheels currently on the market use polyamide resin as a matrix resin mixed with glass fibers in the form of thickened fibers as a reinforcing material.
一方、本発明のブレーキシューに用いられるゴムは、天
然ゴム、合成ポリイソプレンゴム、ポリブタジェンゴム
、ウレタンゴム等、及び上記ゴムの２種以上の混合体も
使用できる。更にゴム組成物には通常ゴム配合物に使用
される補強剤、充填剤、軟化剤、粘着付与剤、ゴム加硫
剤、加硫促進剤等が用いられ、通常ゴム硬度は６０〜９
０度である。On the other hand, the rubber used in the brake shoe of the present invention may include natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, urethane rubber, and mixtures of two or more of the above rubbers. Further, the rubber composition contains reinforcing agents, fillers, softeners, tackifiers, rubber vulcanizing agents, vulcanization accelerators, etc. that are normally used in rubber compounds, and the rubber hardness is usually 60 to 9.
It is 0 degrees.
次に本発明のブレーキシューのゴム中に加えられる強化
材としては、ポリアミド系繊維、カーボン繊維１ボロン
繊維、炭化ケイ素繊維等の無機、有機繊維が例示できる
。しかしながら本発明で使用する前記強化材はＦＲＴＰ
中の強化材よりも耐摩耗性と強靭性を有することが必須
要件であり、例えばＦＲＴＰ中の強化材がガラス繊維の
場合には、ゴム中の強化材はポリアミド系繊維の如くで
ある。Examples of the reinforcing material added to the rubber of the brake shoe of the present invention include inorganic and organic fibers such as polyamide fibers, carbon fibers, 1-boron fibers, and silicon carbide fibers. However, the reinforcing material used in the present invention is FRTP.
It is essential that the reinforcing material in the rubber has more wear resistance and toughness than the reinforcing material in the rubber.For example, when the reinforcing material in FRTP is glass fiber, the reinforcing material in the rubber is like polyamide fiber.
以下に更に本発明の具体的実施例を挙げて説明する。Specific examples of the present invention will be further described below.
被制動体の車輪は、マトリックス樹脂にポリアミド樹脂
を使用し、強化材としてガラス繊維のチョツプドファイ
バ２０％を添加したＦＲＴＰで形成されたものである。The wheels of the braked body are made of FRTP using polyamide resin as a matrix resin and adding 20% chopped glass fiber as a reinforcing material.
一方、ブレーキシューは、次表の配合組成物からなって
いる。On the other hand, the brake shoe consists of the composition shown in the table below.
表
前記の車輪に対し、上記表の配合によるブレーキシュー
の制動距離、摩耗量試験を行なったところ、ブレーキ操
作力２０．１ｋｇｆ、試験回数１０．０００回で、制動
距離平均３２４１、摩耗量は１ｇであるのに対し、上記
表で強化材を加えないブレーキシューでは、制動距離平
均３１０ａｎ、摩耗量は１６．８ ｇと、制動距離にお
いて両者は殆んど差が認められないが、本発明のブレー
キシューは、その耐摩耗性において極めて優れたもので
あることが判った。When testing the braking distance and wear amount of brake shoes with the formulation shown in the table above for the wheels shown in the table above, the brake operating force was 20.1 kgf, the number of tests was 10,000 times, the average braking distance was 3241, and the amount of wear was 1 g. On the other hand, in the table above, the brake shoe without any reinforcing material has an average braking distance of 310 an and a wear amount of 16.8 g, and there is almost no difference between the two in terms of braking distance. The brake shoe was found to have extremely good wear resistance.
なお、上記の試験は一般の自転車用ブレーキの試験方法
により行なったもので、走行速度を２０ｋｍ／ｈ 、荷
重９０ｋｇ （フライホイール）、シリンダ径３２ｒｍ
φ＝８．０３８ ｃｄ、シリンダ圧は制動距離試験では
２．５ｋｇｆ／ｃ−ｄ、摩耗量試験では３．０ｋｇｆ／
ｄｉの各条件で行なった。The above test was conducted using a general bicycle brake test method, with a running speed of 20 km/h, a load of 90 kg (flywheel), and a cylinder diameter of 32 rm.
φ=8.038 cd, cylinder pressure was 2.5 kgf/c-d in braking distance test, and 3.0 kgf/c-d in wear amount test.
The test was carried out under various conditions of di.
（発明の効果）
本発明は車輪素材であるＦＲＴＰ中の強化材よりも、ブ
レーキシューのゴム中に含まれる強化材として耐摩耗性
の大なるものを使用したので、車輪例の強化材がシュー
側の強化材を介してゴムに摺接するので、シュー側の強
化材が犠牲となってゴムを摩滅することがなく、一方、
ソニー例のゴムを車輪側のマトリックス樹脂とよく摺接
して制動力を発揮することになり、従来のゴム製シュー
に比し格段の耐久性が得られたのである。(Effects of the Invention) The present invention uses a reinforcing material contained in the rubber of the brake shoe that has greater wear resistance than the reinforcing material in FRTP, which is the wheel material. Since it makes sliding contact with the rubber through the reinforcing material on the side, the reinforcing material on the shoe side will not be sacrificed and wear out the rubber, and on the other hand,
Sony's rubber made good sliding contact with the matrix resin on the wheel side to exert braking force, resulting in far greater durability than conventional rubber shoes.
Claims (1)
材が均一に分散した繊維強化熱可塑性樹脂により形成さ
れた車輪のリムに摺接して使用されるブレーキシューで
あって、 このブレーキシューは天然あるいは合成ゴム中に、前記
車輪中に含まれる強化材よりも耐摩耗性の大なる強化材
が含まれたものからなる自転車用合成樹脂製車輪のブレ
ーキシュー。(1) A brake shoe that is used in sliding contact with the rim of a wheel, which is made of a fiber-reinforced thermoplastic resin in which reinforcing materials such as glass fibers are uniformly dispersed in a hard thermoplastic synthetic resin; A brake shoe for a bicycle synthetic resin wheel is made of natural or synthetic rubber containing a reinforcing material having greater wear resistance than the reinforcing material contained in the wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118111A JPH0617699B2 (en) | 1990-05-07 | 1990-05-07 | Brake shoes for synthetic resin wheels for bicycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118111A JPH0617699B2 (en) | 1990-05-07 | 1990-05-07 | Brake shoes for synthetic resin wheels for bicycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0415330A true JPH0415330A (en) | 1992-01-20 |
| JPH0617699B2 JPH0617699B2 (en) | 1994-03-09 |
Family
ID=14728300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2118111A Expired - Lifetime JPH0617699B2 (en) | 1990-05-07 | 1990-05-07 | Brake shoes for synthetic resin wheels for bicycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617699B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006105339A (en) * | 2004-10-08 | 2006-04-20 | Fujitec Co Ltd | Rope brake |
| CN100451375C (en) * | 2003-12-03 | 2009-01-14 | 李海 | Brake block and its manufacturing method |
| JP2012233578A (en) * | 2011-05-02 | 2012-11-29 | Campagnolo Spa | Brake pad |
| CN106220916A (en) * | 2016-08-16 | 2016-12-14 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation method of function admirable modified friction material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5259687A (en) * | 1975-11-12 | 1977-05-17 | Yutaka Tanahashi | Abrasion resisting moldings strongly bonded carbon fiber and rubber |
-
1990
- 1990-05-07 JP JP2118111A patent/JPH0617699B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5259687A (en) * | 1975-11-12 | 1977-05-17 | Yutaka Tanahashi | Abrasion resisting moldings strongly bonded carbon fiber and rubber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451375C (en) * | 2003-12-03 | 2009-01-14 | 李海 | Brake block and its manufacturing method |
| JP2006105339A (en) * | 2004-10-08 | 2006-04-20 | Fujitec Co Ltd | Rope brake |
| JP4543865B2 (en) * | 2004-10-08 | 2010-09-15 | フジテック株式会社 | Rope brake |
| JP2012233578A (en) * | 2011-05-02 | 2012-11-29 | Campagnolo Spa | Brake pad |
| CN106220916A (en) * | 2016-08-16 | 2016-12-14 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation method of function admirable modified friction material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617699B2 (en) | 1994-03-09 |
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