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    • 3. 发明专利
    • Combined piston ring
    • JP2004162632A
    • 2004-06-10
    • JP2002330354
    • 2002-11-14
    • Teikoku Piston Ring Co LtdToyota Motor Corpトヨタ自動車株式会社帝国ピストンリング株式会社
    • ISHIDA MASAOSUZUKI TAKAO
    • F02F5/00F16J9/06F16J9/16F16J9/26
    • PROBLEM TO BE SOLVED: To provide a combined piston ring provided with a resin ring pressing an outside ring, which excellently holds sealing property at the time of a high temperature without causing seizure and friction excess, and maintains engine performance.
      SOLUTION: This piston ring 4 is constituted of the outside ring 5 sliding with an inner peripheral surface 2a of a cylinder 2, and an inside ring 6 pressing the outside ring 5 outward in the radial direction. The inside ring 6 is the resin ring having tension raised by thermal expansion in an abutment state of joints, and is made of a resin material in which resin has an inflection point to rapidly drop an elastic modulus of the material at a certain fixed temperature. An intermediate ring is put between the outside ring 5 and the inside ring 6. The inside ring 6 is the resin ring having tension raised by thermal expansion in the abutment state of the joints, and is made of the resin material in which resin has the substantially constant elastic modulus according to a temperature. The intermediate ring may be made of the resin material having the inflection point for rapidly dropping the elastic modulus of the material at the certain fixed temperature or the resin material for lowering the elastic modulus due to a temperature rise.
      COPYRIGHT: (C)2004,JPO
    • 8. 发明专利
    • Piston ring
    • 活塞环
    • JP2005002907A
    • 2005-01-06
    • JP2003167788
    • 2003-06-12
    • Teikoku Piston Ring Co LtdToyota Motor Corpトヨタ自動車株式会社帝国ピストンリング株式会社
    • SUZUKI TAKAOISHIDA MASAO
    • F02F5/00F16J9/06
    • PROBLEM TO BE SOLVED: To provide a piston ring composed of a metal outer ring and resin expansion ring and surely preventing overlap of an abutment parts. SOLUTION: This invented piston ring 1a is composed of the metal outer ring 10a and the synthetic resin expansion ring 11a. The expansion ring 11a includes a pin 14a of which one end is fixed (locked) on the expansion ring 11a itself near to each end part of the abutment part. Each pin 14a is inserted through a through hole 13a formed in a radial direction of the outer ring 10a and another end thereof is locked with the outer ring 10a at an outer circumference side of the outer ring 10a. The through hole 13a is formed in a size that the inserted pin 14a can move in a circumference direction of the outer ring 10a. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种由金属外圈和树脂膨胀环组成的活塞环,并且可靠地防止邻接部件的重叠。 解决方案:本发明的活塞环1a由金属外圈10a和合成树脂膨胀环11a构成。 膨胀环11a包括销14a,销14a固定(锁定)在靠近抵接部的每个端部的膨胀环11a本身上。 每个销14a通过形成在外圈10a的径向方向上的通孔13a插入,而另一端与外圈10a的外周侧的外圈10a锁定。 通孔13a形成为使得插入销14a能够在外圈10a的圆周方向上移动的尺寸。 版权所有(C)2005,JPO&NCIPI