To provide an oil-free chain with a joint link unit which can avoid degradation in plate strength and reduce the load of manufacturing a chain, which can prevent a lubricating oil from leaking from the space between an idle-fitting plate and a joint pin, which can securely position the idle-fitting plate in the chain width direction, and which can prevent the lubricating oil from leaking to the outside and outside dust from entering.
The oil-free chain 100 with the joint link unit consists of a chain body 110 and the joint link unit 120. A bush-projection 112a projected from an inner plate 113 is surrounded and supported by annular recesses 122a, 123a for pivoting a bush of a press-fitting plate 122 and the idle-fitting plate 123. Then an elastic seal member 130 is tightly engaged with the outer peripheral surface of the joint pin 121 in a state where it is placed between the idle-fitting plate 123 and a fastening means 124 for a joint.
| JPS58146145 | 【考案の名称】動力伝導用チエン |
| JPH0641784 | INDUSTRIAL APPLICABILITY A chain in which links of the same shape are connected by pins. |
| JP5849837 | Seal ring |
ISHIDA HIROKI
NAKAGAWA TAKASHI
ANDO TAKANAO
| JP2007205545A | 2007-08-16 | |||
| JPS5524297A | 1980-02-21 | |||
| JPH1182639A | 1999-03-26 | |||
| JPS4527142Y1 | 1970-10-21 |
Nobuo Fujimoto
Masayuki Miyake
Atsuo Kawai