Slide bearing, slide bearing unit with same, and motor with the bearing unit

Abstract

A bearing which can satisfy the demand for a reduction in cost and for improved quietness and which can, in addition, stably maintain high supporting accuracy. A slide bearing (4) provided with an inner member (5) which has a mounting surface (9) mounted to a rotating shaft (2), and also with a mounting surface which is disposed on the inner member (5) on the outer diameter side thereof and is mounted to a stationary member. A thick-walled section (5a) which is a protrusion section (P) is provided to the inner member (5), and a radial bearing clearance in which a lubricating oil is disposed is formed between the outer peripheral surface (5a1) of the thick-walled section (5a) and the inner peripheral surface (7a1) of an outer member (6), said inner peripheral surface (7a1) facing the outer peripheral surface (5a1). Seal clearances (S, S) for retaining the oil surfaces of the lubricating oil at positions on both sides of the radial bearing clearance in the axial direction are formed between the inner member (5) and the outer member (6). At least a portion of the mounting surface (9) of the inner member (5) consists of metal.

Description

technical field [0001] The present invention relates to a sliding bearing, a sliding bearing unit including the sliding bearing, and a motor including the bearing unit. Background technique [0002] Bearings are incorporated in electric motors mounted on electric equipment such as ventilating fans, and the rotating side members (for example, the rotating shaft of the motor) are rotatably supported by the bearings with respect to the stationary side members. In such an application, it is preferable to use a so-called sliding bearing that includes an outer ring and an inner ring, a plurality of rolling elements arranged between the inner and outer rings, and a cage that holds the rolling elements at predetermined intervals in the circumferential direction. As a constituent member (for example, refer to Patent Document 1). [0003] 【Prior technical literature】 [0004] 【Patent Literature】 [0005] [Patent Document 1] Japanese Patent Laid-Open No. 2000-249142 [0006] In rec...

AI Technical Summary

Problems solved by technology

However, in this case, due to the difference in the accuracy of the outer peripheral surface of the rotating side member, there is a possibility that the desired supporting accuracy cannot be stably maintained.

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