JPS58106238A - Rubber film for pneumatic spring - Google Patents
Rubber film for pneumatic springInfo
- Publication number
- JPS58106238A JPS58106238A JP20405481A JP20405481A JPS58106238A JP S58106238 A JPS58106238 A JP S58106238A JP 20405481 A JP20405481 A JP 20405481A JP 20405481 A JP20405481 A JP 20405481A JP S58106238 A JPS58106238 A JP S58106238A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- layer
- molding
- air spring
- splice
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0409—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the wall structure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は自動二輪および自動車のサヌペンション、巣に
一般産業機械用空気バネに用いるゴム膜に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rubber film used in air springs for motorcycles, automobile suspensions, springs, and general industrial machinery.
空気バネ用ゴム展はｐ−リングシールｆｉ、へ。For information on rubber for air springs, go to P-Ring Seal FI.
−ズ型およびダイヤフラム型とモ、コム内層、補強層、
ゴム外層からなっており、加硫成型によって一体に加硫
接着成型されている０従来、これらノ空気バネのゴム膜
の内層ゴムおよび外層ゴ４は円筒状ドラム等の上で未加
硫ゴムシート等を貼り合わせ成型していた０このため、
実用時においてゴム膜の屈曲疲労によって、この貼り合
せ部からいわゆるスプライスクラック現象が生じ、それ
以外の部分からは実甲上の故障は発生しないにもかかわ
らず、仁の故障のため継続使用の機能を失い、早期にゴ
ム膜を交換することを余儀なくされていた０
本発明の目的は、空気バネゴム膜の屈曲疲労に伴う製品
の初期故障を無くシ、耐久性に対する信頼性を高めた、
自動車および産業用等の空気・（ネ用ゴム膜を提供する
ことにあるＯ
本発明によれば、ゴム内層、補強層、ゴム外層から成る
空気バネ用ゴム膜において、前記ゴム内層およびゴム外
層の内少なくとも一万を継ぎ目のない円筒体材料を用い
て加硫成型することにより、上記目的を達成することが
できるＯ
以下、本発明の空気バネ用ゴム膜を添付図面を参照しつ
つ詳細に説明する０
第１図は従来既知のローリングシール製空気ばねの断面
図であり、１はｇ ＋ ＩＪングシール型生空気バネゴ
ム膜２は外筒、３は円筒、４は気室、５はガス体の給気
および排気口である。この空気バネは、給気および排気
口５がら気室４に圧縮空気を封入し、その反発弾性をバ
ネとして利用するものであり、一般の空気バネの使用方
法と全く同じｅある。このような構成のローりングシー
ル型空気バネのゴム膜は、屈曲部が外力により転勤、す
なわち、ローリングしながら作動するＣ従って、使用時
このゴム膜には転勤に伴う繰り返し動的歪応力が加わる
。-Z type and diaphragm type, comb inner layer, reinforcing layer,
It consists of an outer rubber layer, which is integrally vulcanized and adhesively molded. Conventionally, the inner layer rubber and the outer layer rubber of the rubber membrane of these air springs are formed on an unvulcanized rubber sheet on a cylindrical drum, etc. For this reason,
During actual use, bending fatigue of the rubber membrane causes a so-called splice crack phenomenon to occur at this bonded part, and although no actual failure occurs from other parts, the function of continued use due to failure of the joint. The object of the present invention is to eliminate the initial failure of the product due to bending fatigue of the air spring rubber membrane, and to improve reliability in terms of durability.
According to the present invention, in a rubber film for air springs comprising an inner rubber layer, a reinforcing layer, and an outer rubber layer, the inner rubber layer and the outer rubber layer The above object can be achieved by vulcanizing and molding at least 10,000 parts of the seamless cylindrical material.Hereinafter, the rubber membrane for air springs of the present invention will be described in detail with reference to the accompanying drawings. 0 Figure 1 is a cross-sectional view of a conventionally known rolling seal air spring, where 1 is a g + IJ seal type fresh air spring rubber membrane 2 is an outer cylinder, 3 is a cylinder, 4 is an air chamber, and 5 is a gas chamber This is an air supply and exhaust port.This air spring seals compressed air into the air chamber 4 through the air supply and exhaust port 5, and uses its repulsion elasticity as a spring. Exactly the same e.The rubber membrane of a rolling seal type air spring with such a configuration operates while the bent portion is transferred by an external force, that is, rolling.C Therefore, when in use, this rubber membrane is subject to repeated motion due to transfer. A physical strain stress is applied.
第２図は第１図に示すローりングシール型空気バネに組
み込まれる前のローりングシール型空気バネゴム膜６を
示す。従来、この種のゴム膜は、その製造工程において
、未加硫ゴムシート材料等を円筒状ドラム等の上で貼り
合せて成型していたため、第２図のＸ−Ｘ面での断面図
である第３図に示すように、未加硫状態ではゴム内層Ａ
およびゴム外層Ｃにはスズライス部７が存在し、加硫後
には第４図に示すように、ゴム外層Ａ□およびゴム外層
Ｃユはともに表面は平滑になるが、なお７′で示すよう
にスプライス部を内在している。従って、従来の空気バ
ネ用ゴムＪ［製品には内外ゴム層に少なくとも１箇処の
不均質部が内在している。前述したように、第１図に示
すローリングシール型空気バネゴム属は使用中転動によ
り転勤部に加わる繰り返し動的歪応力により、この部分
のゴム展全周が疲労劣化する。この疲労劣化により、不
均質部を内在する従来品は不均質部からいわゆるフロー
クシツクおよびスプライスクララ゛りが発生し易い。FIG. 2 shows the rolling seal air spring rubber membrane 6 before being incorporated into the rolling seal air spring shown in FIG. Conventionally, in the manufacturing process, this type of rubber membrane was formed by bonding unvulcanized rubber sheet materials on a cylindrical drum, etc., so the cross-sectional view taken along the As shown in Fig. 3, in the unvulcanized state, the rubber inner layer A
There is a tin slice part 7 in the rubber outer layer C, and after vulcanization, as shown in FIG. 4, the surfaces of both the rubber outer layer A Contains a splice part. Therefore, the conventional rubber J product for air springs has at least one non-uniform part in the inner and outer rubber layers. As mentioned above, in the rolling seal type air spring rubber shown in FIG. 1, the repeated dynamic strain stress applied to the transfer portion due to rolling during use causes fatigue deterioration of the entire circumference of the rubber in this portion. Due to this fatigue deterioration, conventional products that include non-uniform parts are prone to so-called flow problems and splice cracks from the non-uniform parts.
本発明は従来品のこの欠点を解消しようとするものであ
り、第５図に示すように補強層Ｂの両側のゴム内層Ａ、
およびゴム外層ｃ２ともにスプライス部または不均質部
を内在しない空気バネ用ゴム腹を提供しようとするもの
である。The present invention aims to eliminate this drawback of conventional products, and as shown in FIG.
It is an object of the present invention to provide a rubber belly for an air spring in which both the rubber outer layer c2 and the rubber outer layer c2 do not include splice portions or non-uniform portions.
このように不均質部を内在しないゴム内層Ａ２およびゴ
ム外層Ｃ２を有する空気バネ用ゴム膜を製造する方法に
は、押出機により内外ゴム層を押出す方法、射出成型装
置を用いる方法およびナイッピング製法などを挙げるこ
とができる。これらの方法の内で、生産性、操業性など
の観点から押出機を用いて上述のような不均質部を内在
させない内外ゴム層を形成するのが特に好適である。こ
の押出方法について簡単に説明すると、第６図に示−４
−ように、ゴム押出機により、マンドレルＭの外周にゴ
ム内層Ａ２を連続的に押出被覆し、このゴム内ノー上に
ゴム引き繊維補強材を一般に行われているようにして所
定の角度で巻回し、繊維補強層Ｂを形成し、この補１ｊ
Ｉｉ層上に押出様によってゴム外Ｊｌ＠Ｃ，を押出被覆
して未加硫成型体とする。この未加硫成型体を定尺に切
断し、金型にて加硫成型すると不発明のを気バネ用ゴム
膜が得られる〇このようにして得られた本発明の空気バ
ネゴム族と、従来の不均質部を内在する空気バネゴム族
とを、以下に述べる耐久性の比較試験を実施した結果、
本発明品は従来品よりも４倍以上、初期故障発生の回数
が延長できることが確認された０本発明および従来のゴ
ム膜を第１図に示すようにローリングシール型空気バネ
として装着し、気室４に圧縮空気を封入し、加振時鍛高
圧力８ ｂｆ／ｊ、加振振動数５Ｈ２、・ストａ−り±
２０鰭、雰囲気温度８０℃の同一耐久試験条件にて比較
試験を実施した結果、従来の不均質部を内在するゴム膜
は４０万回程度でゴム外層のスズライス部よりクラック
が発生したが、本発明による空気バネゴム映は１６０万
回程度でも故障の発生は認められなかった。Methods for producing a rubber film for an air spring having an inner rubber layer A2 and an outer rubber layer C2 without any heterogeneous portions include a method of extruding the inner and outer rubber layers using an extruder, a method using an injection molding device, and a knipping method. etc. can be mentioned. Among these methods, from the viewpoint of productivity, operability, etc., it is particularly preferable to use an extruder to form inner and outer rubber layers that do not contain the above-mentioned heterogeneous portions. A brief explanation of this extrusion method is shown in Figure 6-4.
- A rubber inner layer A2 is continuously extruded and coated on the outer periphery of the mandrel M by a rubber extruder, and a rubberized fiber reinforcement material is wound on the rubber inner layer A2 at a predetermined angle in a conventional manner. to form a fiber reinforced layer B, and this supplement 1j
A rubber outer layer Jl@C is extrusion coated onto the layer Ii by extrusion to obtain an unvulcanized molded body. When this unvulcanized molded body is cut into regular lengths and vulcanized and molded in a mold, an uninvented rubber film for air springs can be obtained. As a result of carrying out the durability comparison test described below with the air spring rubber family that has heterogeneous parts,
It has been confirmed that the product of the present invention can increase the number of initial failures by more than four times as compared to the conventional product. Compressed air was sealed in chamber 4, and the high forging pressure during excitation was 8 bf/j, the excitation frequency was 5H2, and the temperature was set at ±
As a result of conducting a comparative test under the same durability test conditions with 20 fins and an ambient temperature of 80°C, it was found that the conventional rubber film containing heterogeneous parts cracked from the tin slice part of the rubber outer layer after about 400,000 cycles, but this No failures were observed even after the air spring rubber imaged according to the invention was used approximately 1.6 million times.
以上説明した処は、代表的にローリングシール型空気バ
ネについて行ってきたが、他の型の空気バネについても
同様である。第７図はベロース型空気バネゴム膜８の斜
視図であり、ｙ−Ｘ断面は第２図のＸ−Ｘ断面と同様に
、従来は第３図および第４図につき説明したように構成
されていたか、本発明においては＃Ｉ５図１こ示Ｔよう
に構成することにより、従来の欠点をなくすことができ
るのである〇
以上説明したように、本発明による空気バネ用ゴム膜は
、そのゴム内層およびゴム外層に継ぎ目、貼り合せ部が
ないため、長期間に亘る繰り返し歪応力が加えられても
）ａ−クラックおよびスブシイスクラツク等が発生しな
い。従って、本発明のゴム膜は従来のものに比べ、耐久
性、信頼性に優れ、自動車、産業用機械等高度の耐久性
、信頼性を要求される分野に対応できる。The above description has typically been made regarding rolling seal type air springs, but the same applies to other types of air springs. FIG. 7 is a perspective view of the bellows type air spring rubber membrane 8, and the y-X cross section is similar to the X-X cross section in FIG. In addition, in the present invention, by constructing it as shown in #I5 in Figure 1, the conventional drawbacks can be eliminated.〇As explained above, the rubber membrane for air springs according to the present invention has a rubber inner layer. Also, since there are no seams or bonded parts in the outer rubber layer, no a-cracks or subsea cracks will occur even if repeated strain stress is applied over a long period of time. Therefore, the rubber membrane of the present invention has superior durability and reliability compared to conventional rubber membranes, and can be used in fields that require a high degree of durability and reliability, such as automobiles and industrial machinery.
第１図はローリングシール型空気バネの組立断面図、第
２図はローりングシール型空気バネゴム膜の斜視図、８
ｇ３図は第２図のＸ−Ｘ断面の従来のゴム族の加硫前の
断面図、第４図は第２図のＸ−Ｘ断面の従来のゴム膜の
加硫後の断面図、第５図は第２図のＸ−Ｘ断面の本発明
によるゴム膜の加硫前εよび加硫後の断面図、第６図は
本発明のゴム族を製造する方法を説明するための斜視図
、第７図はベローズ型空気バネゴム膜の斜視図である。
符号の説明
１・・・ローリングシール型空気バネゴム膜、２・・・
外筒、３・・・円筒、４・・・気室、５・・・ガス体給
排気口、６・・・組込前のローリングシール型空気バネ
ゴム膜、７・・・加硫前のスプライス部、７′・・・加
硫後のスプラ（スｉＬ８・・・ベローズ型空気バネゴム
膜、Ａ・・・従来のゴム膜の加硫前ゴム内層、Ｂ・・・
補強層、Ｃ・・・従来のゴム族の加硫前ゴム外層、Ａ１
・・・従来のゴム膜の加硫後ゴム内層、Ｃ１・・・従来
のゴム膜の加硫後ゴム外層、Ａ、・一本発明のゴム膜の
加硫前後のゴム内層、Ｃ１・・本発明のゴム族の加硫前
後のゴム外層、Ｍ・・・マンドレル
特許出願人 横浜ゴム株式会社
代理人 弁理士 渡 辺 望 稔、し・Figure 1 is an assembled sectional view of a rolling seal type air spring, Figure 2 is a perspective view of a rolling seal type air spring rubber membrane, 8
Figure g3 is a cross-sectional view of the conventional rubber film taken along the line XX in Figure 2 before vulcanization, and Figure 4 is a cross-sectional view of the conventional rubber film taken along the line X-X in Figure 2 after vulcanization. 5 is a cross-sectional view of the rubber film according to the present invention taken along the line XX in FIG. , FIG. 7 is a perspective view of a bellows type air spring rubber membrane. Explanation of symbols 1...Rolling seal type air spring rubber membrane, 2...
Outer cylinder, 3...Cylinder, 4...Air chamber, 5...Gas supply/exhaust port, 6...Rolling seal type air spring rubber membrane before assembly, 7...Splice before vulcanization Part, 7'...Splatter after vulcanization (S iL8...Bellows type air spring rubber membrane, A...Rubber inner layer before vulcanization of conventional rubber membrane, B...
Reinforcement layer, C: Outer layer of conventional rubber before vulcanization, A1
...Rubber inner layer after vulcanization of a conventional rubber membrane, C1...Rubber outer layer after vulcanization of a conventional rubber membrane, A.-1 Rubber inner layer before and after vulcanization of the rubber membrane of the present invention, C1... Book Rubber outer layer before and after vulcanization of the rubber group of the invention, M... Mandrel Patent applicant Yokohama Rubber Co., Ltd. Representative Patent attorney Minoru Watanabe, Shi.
Claims (1)
ム膜において、前記ゴム内層およびゴム外層の内少なく
とも一万を継ぎ目のないゴム円筒体を用いて成形加硫し
たことを特徴とする空気バネ用ゴム展。A rubber membrane for an air spring comprising an inner rubber layer, an intermediate reinforcing layer, and an outer rubber layer, characterized in that at least 10,000 of the inner rubber layer and outer rubber layer are molded and vulcanized using a seamless rubber cylindrical body. Rubber exhibition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20405481A JPS58106238A (en) | 1981-12-17 | 1981-12-17 | Rubber film for pneumatic spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20405481A JPS58106238A (en) | 1981-12-17 | 1981-12-17 | Rubber film for pneumatic spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58106238A true JPS58106238A (en) | 1983-06-24 |
Family
ID=16483979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20405481A Pending JPS58106238A (en) | 1981-12-17 | 1981-12-17 | Rubber film for pneumatic spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58106238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998011361A1 (en) * | 1996-09-09 | 1998-03-19 | Phoenix Aktiengesellschaft | Slotted protection for a hose-like body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS498558A (en) * | 1972-05-12 | 1974-01-25 |
-
1981
- 1981-12-17 JP JP20405481A patent/JPS58106238A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS498558A (en) * | 1972-05-12 | 1974-01-25 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998011361A1 (en) * | 1996-09-09 | 1998-03-19 | Phoenix Aktiengesellschaft | Slotted protection for a hose-like body |
| US6254948B1 (en) | 1996-09-09 | 2001-07-03 | Phoenix Aktiengesellschaft | Slit protection for a tubular body |
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