Bearing structure

A synthetic resin bearing member for supporting an axis rotationally while mounted in a bearing support having an internal thread, the bearing member having an outer periphery, comprising:

• a plurality of external thread portions formed on the outer periphery of the bearing member, the external thread portions adapted to be screwed into the internal thread of the bearing support;
• and
• a plurality of incomplete thread portions formed on the outer periphery alternately between the external thread portions;
• whereby the bearing means is fixed to the bearing support by applying an axial-directed force while screwing the bearing member into the internal thread of the bearing support, such that the plurality of incomplete thread portions allows the bearing member to be adjusted and locked in an arbitrary position to enable smooth rotation of the axis.

A synthetic resin bearing member for supporting an axis rotationally while mounted in a bearing support having an internal thread, the bearing member having an outer periphery, comprising:

• at least one external thread portion formed on the outer periphery of the bearing member, the external thread portion adapted to be screwed into the internal thread of the bearing support;
• and
• at least one incomplete thread portion formed on the outer periphery, the diameter of the incomplete thread portions being the same as, or slightly larger than, the diameter of the external thread portion;
• whereby the bearing means is fixed to the bearing support by applying an axial-directed force while screwing the bearing member into the internal thread of the bearing support.