JP2789985B2 - Rubber bag structure for pressure test of motor case - Google Patents
Rubber bag structure for pressure test of motor caseInfo
- Publication number
- JP2789985B2 JP2789985B2 JP3335493A JP3335493A JP2789985B2 JP 2789985 B2 JP2789985 B2 JP 2789985B2 JP 3335493 A JP3335493 A JP 3335493A JP 3335493 A JP3335493 A JP 3335493A JP 2789985 B2 JP2789985 B2 JP 2789985B2
- Authority
- JP
- Japan
- Prior art keywords
- motor case
- rubber bag
- pressure test
- rubber
- bag structure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Motor Or Generator Frames (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ロケットモータ用モー
タケースの耐圧試験に用いられるゴムバッグの構造に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rubber bag used for a pressure test of a motor case for a rocket motor.
【０００２】[0002]
【従来の技術】図３は、従来におけるロケットモータ用
モータケースの耐圧試験用ゴムバッグの構造を示す図で
ある。2. Description of the Related Art FIG. 3 is a view showing the structure of a conventional rubber bag for a pressure test of a motor case for a rocket motor.
【０００３】モータケース１０１の内側面全体には、燃
焼時における熱からケースを保護するインシュレーショ
ン１０２が貼り付けてある（例えば、特開平１−１５９
４５１号公報に一例が紹介されている）。ゴムバッグ１
０３は、予め専用の成形治具で成形されており、耐圧試
験に際して前記モータケース１０１の内部に挿入され
る。そして、前記ゴムバッグ１０３は、内部に水が加圧
供給されることによって膨脹し、前記モータケース１０
１にその内側から圧力を加えることとなる。[0003] An insulation 102 for protecting the case from heat during combustion is attached to the entire inner side surface of the motor case 101 (for example, see JP-A-1-159).
No. 451 discloses an example). Rubber bag 1
03 is previously formed by a special forming jig, and is inserted into the motor case 101 at the time of a pressure resistance test. The rubber bag 103 is inflated when water is supplied under pressure, and the motor case 10 is inflated.
Pressure is applied to 1 from the inside.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記したよ
うな従来のモータケースの耐圧試験用ゴムバッグ構造に
あっては、専用の成形治具により成形されたゴムバッグ
１０３を用いていたため、当該ゴムバッグ１０３の製造
に多くの費用がかかり、このほか、モータケース１０１
の内部とゴムバッグ１０３との間にずれが生じ易く、そ
のずれた部分が耐圧試験時の圧力で破壊される恐れがあ
ることから、これらの不具合に対する改善が望まれてい
た。However, in the conventional rubber bag structure for a pressure test of a motor case as described above, the rubber bag 103 formed by a dedicated molding jig is used. The manufacturing of the bag 103 is costly, and in addition, the motor case 101
The gap between the inside of the rubber bag 103 and the rubber bag 103 is likely to occur, and the shifted portion may be broken by the pressure during the pressure resistance test.
【０００５】[0005]
【発明の目的】本発明は、上記したような従来の状況に
鑑みてなされたもので、製造費用の節約、および耐圧試
験時の異常破壊の防止を実現することができるモータケ
ースの耐圧試験用ゴムバッグ構造を提供することを目的
としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and is intended for use in a motor case withstand pressure test which can reduce manufacturing costs and prevent abnormal destruction during a withstand voltage test. It is intended to provide a rubber bag structure.
【０００６】[0006]
【課題を解決するための手段】本発明に係わるモータケ
ースの耐圧試験用ゴムバッグ構造は、ロケットモータ用
モータケースの内側面全体にインシュレーションを設
け、前記インシュレーションの内側面全体に、多数の孔
を有する剥離用フィルムを介してゴム層を一体成形して
前記ゴム層全体で耐圧試験用ゴムバッグを形成した構成
としており、上記の構成を課題を解決するための手段と
している。According to the rubber bag structure for a pressure test of a motor case according to the present invention, an insulation is provided on the entire inner surface of a motor case for a rocket motor, and a large number of insulations are provided on the entire inner surface of the insulation. The rubber layer is integrally formed via a release film having holes, and a rubber bag for a pressure test is formed by the entire rubber layer. The above configuration is a means for solving the problem.
【０００７】[0007]
【発明の作用】本発明に係わるモータケースの耐圧試験
用ゴムバッグ構造では、モータケース内側のインシュレ
ーションの内側面全体に剥離用フィルムを介してゴム層
を一体成形することにより、ゴムバッグ成形用の治具を
用いずに、且つモータケースとの間にずれを生じさせる
ことなくゴムバッグが設けられることとなり、耐圧試験
終了後には、剥離用フィルムとともにゴムバッグを除去
し得る。In the rubber bag structure for the pressure test of the motor case according to the present invention, the rubber layer is integrally formed on the entire inner surface of the insulation inside the motor case via a peeling film, thereby forming the rubber bag. The rubber bag is provided without using the jig and without causing a gap between the rubber bag and the motor case. After the pressure test, the rubber bag can be removed together with the peeling film.
【０００８】[0008]
【実施例】以下、図１および図２に基づいて本発明の一
実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【０００９】すなわち、図１に示す耐圧試験用ゴムバッ
グ構造は、ロケットモータ用モータケース１の内側面全
体に、燃焼時の熱からケースを保護するインシュレーシ
ョン２が貼り付けてあり、さらに、前記インシュレーシ
ョン２の内側面全体に、剥離用フィルム３を介してゴム
層４が一体的に形成してある。That is, in the rubber bag structure for a pressure test shown in FIG. 1, an insulation 2 for protecting the case from heat during combustion is attached to the entire inner surface of a motor case 1 for a rocket motor. A rubber layer 4 is integrally formed on the entire inner surface of the insulation 2 with a release film 3 interposed therebetween.
【００１０】前記剥離用フィルム３は、例えばポリ４フ
ッ化エチレン（商品名：テフロン）製であって、インシ
ュレーション２に対するゴム層４の粘着性を確保し且つ
剥離可能とするために、全面にわたって微細な孔を有し
ている。The release film 3 is made of, for example, polytetrafluoroethylene (trade name: Teflon), and is formed over the entire surface in order to secure the adhesiveness of the rubber layer 4 to the insulation 2 and make the rubber layer 4 peelable. It has fine holes.
【００１１】前記ゴム層４は、例えば、加熱して適当な
粘度の状態に溶融させたゴムを所定の厚さになるまで塗
布したり、前記ゴムを回転するモータケース１内に流し
込んだりしたのち、冷却固化させることによって形成す
ることができ、この工程においてゴムの加硫成形を行う
ことも可能である。The rubber layer 4 is formed, for example, by applying a rubber that has been heated and melted to an appropriate viscosity to a predetermined thickness, or after pouring the rubber into the rotating motor case 1. It can be formed by cooling and solidifying, and vulcanization molding of rubber can be performed in this step.
【００１２】このようにして、前記ゴム層４は専用の成
形治具を用いることなく成形され、全体で耐圧試験用の
ゴムバッグ（Ｂ）を形成している。In this manner, the rubber layer 4 is formed without using a dedicated forming jig, and forms a rubber bag (B) for a pressure test as a whole.
【００１３】上記のインシュレーション２、剥離用フィ
ルム３およびゴム層４を積層状態で有するモータケース
１は、内部にゴムバッグ（Ｂ）を一体に備えた状態にあ
り、耐圧試験時には、内部に水を加圧供給することによ
り内側から圧力が加えられることとなる。このとき、ゴ
ムバッグ（Ｂ）は、先述の如くモータケース１と一体化
し、その間にずれがないことから、耐圧試験の際に前記
ずれによる異常破壊を生じることがない。The motor case 1 having the above-mentioned insulation 2, the peeling film 3 and the rubber layer 4 in a laminated state has a rubber bag (B) integrally provided therein. By applying pressure, pressure is applied from the inside. At this time, the rubber bag (B) is integrated with the motor case 1 as described above, and there is no displacement between them, so that abnormal destruction due to the displacement does not occur during the pressure resistance test.
【００１４】また、上記の耐圧試験用ゴムバッグ構造
は、耐圧試験終了後には、図２に示すように剥離用フィ
ルム３とともにゴム層（ゴムバッグＢ）４が除去され、
製品としてのモータケース１が得られることとなる。こ
ののち、前記モータケース１には、固体推進薬が装填さ
れると共に、図１中に仮想線で示すノズルＮなどが取り
付けられる。In the rubber bag structure for the pressure test, after the pressure test is completed, the rubber layer (rubber bag B) 4 is removed together with the release film 3 as shown in FIG.
The motor case 1 as a product is obtained. Thereafter, the motor case 1 is loaded with a solid propellant and a nozzle N indicated by a virtual line in FIG. 1 is attached.
【００１５】[0015]
【発明の効果】以上説明してきたように、本発明のモー
タケースの耐圧試験用ゴムバッグ構造によれば、モータ
ケース内に剥離用フィルムを介してゴムバッグを一体的
に設けたことから、ゴムバッグ成形用の専用治具が不要
となってゴムバッグの製造費用を大幅に節約することが
できると共に、モータケースとゴムバッグとのずれによ
り生じる耐圧試験時の異常破壊を確実に防止することが
でき、しかも、耐圧試験終了後には、前記ゴムバッグを
簡単に除去することができる。As described above, according to the rubber bag structure for the pressure test of the motor case of the present invention, the rubber bag is integrally provided in the motor case via the peeling film. A special jig for forming the bag is not required, so that the manufacturing cost of the rubber bag can be greatly reduced, and abnormal destruction at the time of the pressure resistance test caused by the displacement between the motor case and the rubber bag can be reliably prevented. The rubber bag can be easily removed after the pressure test is completed.
【図１】本発明の一実施例におけるモータケースの耐圧
試験用ゴムバッグ構造を説明する部分拡大図付きの断面
図である。FIG. 1 is a sectional view with a partially enlarged view illustrating a rubber bag structure for a pressure resistance test of a motor case according to an embodiment of the present invention.
【図２】剥離用フィルムおよびゴムバッグを除去する状
態を示す断面図である。FIG. 2 is a sectional view showing a state in which a peeling film and a rubber bag are removed.
【図３】従来におけるモータケースの耐圧試験用ゴムバ
ッグ構造を説明する断面図である。FIG. 3 is a cross-sectional view illustrating a conventional rubber bag structure for a pressure test of a motor case.
１ モータケース ２ インシュレーション ３ 剥離用フィルム ４ ゴム層 Ｂ ゴムバッグ DESCRIPTION OF SYMBOLS 1 Motor case 2 Insulation 3 Peeling film 4 Rubber layer B Rubber bag
Claims (1)
体にインシュレーションを設け、前記インシュレーショ
ンの内側面全体に、多数の孔を有する剥離用フィルムを
介してゴム層を一体成形して前記ゴム層全体で耐圧試験
用ゴムバッグを形成したことを特徴とするモータケース
の耐圧試験用ゴムバッグ構造。An insulation is provided on the entire inner surface of a motor case for a rocket motor, and a rubber layer is integrally formed on the entire inner surface of the insulation via a release film having a large number of holes. A rubber bag structure for a pressure test of a motor case, wherein a rubber bag for a pressure test is formed as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3335493A JP2789985B2 (en) | 1993-02-23 | 1993-02-23 | Rubber bag structure for pressure test of motor case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3335493A JP2789985B2 (en) | 1993-02-23 | 1993-02-23 | Rubber bag structure for pressure test of motor case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06249071A JPH06249071A (en) | 1994-09-06 |
| JP2789985B2 true JP2789985B2 (en) | 1998-08-27 |
Family
ID=12384250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3335493A Expired - Fee Related JP2789985B2 (en) | 1993-02-23 | 1993-02-23 | Rubber bag structure for pressure test of motor case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789985B2 (en) |
-
1993
- 1993-02-23 JP JP3335493A patent/JP2789985B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06249071A (en) | 1994-09-06 |
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