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    • 12. 发明专利
    • CYLINDRICAL BUSH
    • JPH03134314A
    • 1991-06-07
    • JP27341089
    • 1989-10-20
    • TAIHO KOGYO CO LTD
    • SASAKI SHOZOSUGIYAMA EIJIKAWAKAMI SHINYA
    • F16C33/20F16C17/22F16C33/12
    • PURPOSE:To prevent decrease in the inside diameter by forming a bearing layer containing resin on a back plate, forming an axial through groove on the bearing layer, and exposing the back plate of a designated width to the bottom portion of the groove to let thermal expansion escape in the circumferential direction. CONSTITUTION:A circular bush is formed by forming a bearing layer 2 on a back plate 1, providing chamfering portions 4 on the inner periphery sides of both end portions 3, and bending the above cylindrically in such a manner that the bearing layer is put inside to meet both end portions 3 mutually. The chamfering portions 4 are made larger in such a manner as to form a through groove where the back plate 1 is exposed when both end portions 3 are joined. Further, axial through grooves 6, 7 are provided to expose the back plate 1. Resin such as PTFE, polyacetal, or the like is contained in the bearing layer. The thermal expansion of the bearing layer is let escape in the circumferential direction by the through grooves, and the inside diameter is decreased not to change the clearance with the shaft. Furthermore, the decrease in the area of a sliding surface can be prevented as much as possible.
    • 17. 发明专利
    • Shock absorber
    • 减震器
    • JPS61136031A
    • 1986-06-23
    • JP25451984
    • 1984-12-01
    • Taiho Kogyo Co Ltd
    • KAWAKAMI SHINYA
    • F16F9/32F16F9/36
    • F16F9/366
    • PURPOSE:To greatly reduce abration due to ununiform contact, by forming the inner peripheral surface of a rod guide hole for a piston rod, in a barrel shape to prevent the piston rod from making into ununiform contact with the end section of the rod guide. CONSTITUTION:The inner peripheral surface of a hole 6 formed in a rod guide 5 has a barrel shape having a smaller inner diameter in its center section while having a large inner diameter in its end sections, and a guide bushing 6 is formed in a shapecorresponding to the shape of the inner peripheral surface of the hole 6. The barrel shape slide surface of the guide bushing 7 may be always made into smooth contact with the outer peripheral surface of a piston rod 4 even if the piston rod 4 swings relative to the guide bushing 7.
    • 目的:为了大大减少由于不均匀接触造成的磨损,通过形成筒状的活塞杆用导杆孔的内周面,以防止活塞杆与杆导向件的端部不均匀接触。 构成:形成在杆导向件5中的孔6的内周面具有在其中心部分具有较小内径的筒状,而在其端部具有大的内径,并且引导衬套6形成为相应的形状 即使活塞杆4相对于活塞杆4的摆动,也可以使导向套筒7的筒状滑动面始终与活塞杆4的外周面平滑地接触。 导套7。