Molding motor

A molding and housing technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve problems such as bearing damage

Active Publication Date: 2012-07-04
日本电产高科电机控股公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there are cases where the bearing is damaged by galvanic corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] figure 1 One preferred example of the molded motor 1 (hereinafter simply referred to as the motor 1 ) of the embodiment of the present invention is shown. figure 2 One preferred example of a schematic diagram showing a state in which a molding motor is connected to a cross flow fan. Motor 1 is a brushless DC motor. The motor 1 is used to drive the cross-flow fan 101 of the air conditioner indoor unit 100 (refer to figure 2 ).

[0042] The motor 1 includes a cylindrical stator 2 . The motor 1 includes a motor housing 5 in which a housing space 4 for housing a rotor 3 is formed. The motor housing 5 includes a bottomed cylindrical (preferably bottomed cylindrical) case 6 with one axial side open, and a disc-shaped bracket cover 7 covering the opening side of the case 6 . The shape of the bracket cover 7 may not be a disc shape, but a shape that satisfies requirements. The case 6 is made of resin and covers and embeds the stator 2 . The housing 6 is integrally form...

Embodiment approach 2

[0077] Figure 11 A preferred example of Embodiment 2 is shown. The structure of the bearing holder 15, the bracket cover 7, and the housing 6 of the motor of Embodiment 2 differs from Embodiment 1. As shown in FIG. In addition, in the following embodiments, for substantially the same figure 1 The same constituent elements are denoted by the same reference numerals, and their detailed descriptions are appropriately omitted.

[0078] That is, in Embodiment 2, unlike Embodiment 1, the bearing holder 15 is formed in a cylindrical shape with a constant outer diameter. In addition, the anti-loosening groove 33 is not provided on the outer peripheral surface of the bearing holder 15 . On the other hand, a disk-shaped abutment plate portion 95 is formed at the motor-outer end portion of the hub portion 34 in the bracket cover 7 . The disc-shaped abutment plate portion 95 protrudes radially inward, and abuts on the end surface of the bearing holder 15 . Similarly, an abutment pla...

Embodiment approach 3

[0082] Figure 12 Embodiment 3 is shown, and the structure of the anti-vibration member 40 is different from Embodiment 1. FIG. That is, the motor 1 according to the third embodiment has the connecting rubber portion 99 which integrates the bearing holder 15 and the anti-vibration member 40 . As a result, the man-hours for assembling the motor and the number of parts are reduced, and the cost of the motor 1 is realized.

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Abstract

Provided is a molding motor (1), comprising a stator (2), a resin-made housing (6), a rotor (3), a pair of bearings (9a, 9b), a pair of bearing cages (15), a resin-made bracket cover (7), and a control-use substrate (51), wherein the supporting shaft (8) of the bearings (9a, 9b) makes the molding motor rotate; the bearing cages (15), formed by an elastic body having insulativity, are used for covering and keeping the bearings (9a, 9b) from the radial outboard; the resin-made bracket cover (7) covers the opening side of the housing (6); one of the bearings (9a, 9b) is installed to the bracket cover (7) across the bearing cages (15); and the other bearing (9a, 9b) is installed to the bottom wall of the housing (6) across the bearing cages (15).

Description

technical field [0001] The present invention relates to the technical field related to molded electric motors. Background technique [0002] Conventionally, a known molded motor includes a resin case with one end side open in the axial direction, and a stator embedded in the case and covered with resin (for example, refer to JP-A-2002-335649). The stator includes a metal stator core, and a stator coil is wound around each tooth portion of the stator core. A rotor including a shaft is provided radially inside the stator. The shaft is supported for rotation by a pair of bearings. [0003] A cylindrical bearing housing integrated with the housing is formed on the bottom wall of the housing. One of the pair of bearings is fitted in the bearing housing. The opening side of the housing is covered with a metal bracket cover. The bracket cover includes a cylindrical bearing shell. The other bearing is fitted in the cylindrical bearing housing. [0004] However, as shown in th...

Claims

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Application Information

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IPC IPC(8): H02K5/167H02K5/02
CPCH02K3/345H02K5/08H02K5/161H02K11/33H02K15/10
Inventor 吉田洋前野彰利佐藤纯一吉田达也
Owner 日本电产高科电机控股公司
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