A gear mechanism component having a holder for mounting a component, a lubricant carrier which is infused with a lubricant being pressed into the holder, a gear mechanism arrangement having the gear mechanism component and the component, an adjusting drive having the gear mechanism arrangement, and a method for assembling the gear mechanism arrangement.

A reduction gear of the present invention is compact and light and can be used for tire portions of an apparatus for travelling, etc. Each of outer and inner pins is formed by a rolling bearing. The reduction gear includes block-shaped lubricating members which supply a lubricant to the outer rings of the outer pins to thereby lubricate them, and a ring-shaped lubricating member which supplies the lubricant to the outer rings of the inner pins to thereby lubricate them. The lubricant can be supplied to a pair of cycloid gears through the outer pins and the inner pins for lubrication. Since the cycloid gears, the outer pins, and the inner pins are lubricated by the lubricating members, the reduction gear can enhance its durability, reduce the friction between components to thereby lower the frictional resistance, and realize a light and compact structure.

A speed reducer includes: ring-shaped external gear including outer teeth and through holes arranged circumferentially; input shaft penetrating space surrounded by an external gear inner circumferential surface; bearing between the external gear and input shaft; ring-shaped internal gear surrounding an external gear outer circumferential surface; inner pins penetrating the through holes axially; and inner pin holder holding both ends of each inner pin. The inner pin holder includes: first holder portion including a ring-shaped holding portion holding a first end of each inner pin; second holder portion including a ring-shaped holding portion holding a second end of each inner pin; and pillars connecting the first and second holder portion and penetrating the through holes. The speed reducer further includes fixing members that fix pillar end surfaces to the first holder portion or the second holder portion and are inserted in the pillars from the end surfaces of the pillars.

A speed reducer includes: ring-shaped external gear including outer teeth and through holes arranged circumferentially; input shaft penetrating space surrounded by an external gear inner circumferential surface; bearing between the external gear and input shaft; ring-shaped internal gear surrounding an external gear outer circumferential surface; inner pins penetrating the through holes axially; and inner pin holder holding both ends of each inner pin. The inner pin holder includes: first holder portion including a ring-shaped holding portion holding a first end of each inner pin; second holder portion including a ring-shaped holding portion holding a second end of each inner pin; and pillars connecting the first and second holder portion and penetrating the through holes. The speed reducer further includes fixing members that fix pillar end surfaces to the first holder portion or the second holder portion and are inserted in the pillars from the end surfaces of the pillars.

A gearbox includes a housing defining an interior. The housing includes outer walls and inner walls defining other structure within the housing, and at least one wall of the housing includes a semi-hollow volume. A main lubricant reservoir is disposed within the interior of the housing, and at least one pump is arranged in the interior of the housing for pumping lubricant from the main lubricant reservoir and distributing the lubricant throughout the housing. The semi-hollow volume of the at least one wall stores lubricant during normal operation of the pump, and when a loss of lubricant occurs within the housing, lubricant seeps from the semi-hollow volume to distribute lubricant throughout the housing.