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

A sliding bearing and radial bearing technology, applied in the field of electric motors, can solve problems such as the inability to stably maintain the bearing accuracy, and achieve the effects of improved quietness, prevention of external leakage, and high rotation accuracy

Inactive Publication Date: 2012-05-30
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0048] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0049] figure 1 It is an axial sectional view of the sliding bearing unit 1 incorporating the sliding bearing according to the present invention. The sliding bearing unit 1 shown in this figure includes a rotating shaft 2 as a rotating side member, a pair of sliding bearings 4, 4 arranged separately in two places in the axial direction, arranged between the sliding bearings 4, 4 and fixed to the rotating shaft. The motor rotor 3 on the outer peripheral surface of the motor 2 is used as a constituent member. This sliding bearing unit 1 is used by being incorporated into, for example, a ventilating fan motor (more strictly speaking, an inner rotor type motor for a ventilating fan) installed in a living room of a house. Fans (blades) not shown in the figure are installed accordingly.

[0050] figure 2 It is a sectional view showing the sliding bearing 4 according to t...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/10F16C33/12F16C33/14F16C33/20F16C33/74H02K5/167
CPCF16C33/128B29C45/14F16C33/745F16C43/02F16C17/107F16C2360/46F16C17/105F16C33/14F16C2220/04F16C2220/06F16C2226/12
Inventor 堀政治森夏比古沈威金
Owner NTN CORP
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