JP2000060069A - Electrical equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an electric device that supports a motor that alleviates a rise in temperature of a bearing. SOLUTION: A main body partition wall provided with a ventilation path 12 at a portion where a bearing box 54 in which a bearing 53 is housed and an elastic body 11 disposed so as to enclose the bearing box are in contact with each other, and a ventilation hole 14 is provided through the elastic body 11. 32 and the motor 51
To provide an electric device supporting air, and to allow air to flow through the air passages 12 after passing through the air holes 14 so as to produce a cooling effect on the bearing housing 54 by air, and to provide The temperature rise of the heat is moderated, and the damage of the motor 51 caused by the temperature rise of the bearing 53 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device, for example, an air cleaner supporting a motor of an electric blower.

[0002]

2. Description of the Related Art Conventional electric equipment will be described with reference to FIG. 3 and FIG. 4 showing an example of an air purifier.

In the air purifier shown in FIG. 4, an electric blower 31 for sucking air into a main body and discharging air outside the main body,
A main body partition 32 for attaching the electric blower 31 to the rear surface, a main body rear 33 for covering the outside of the electric blower 31, and a filter 34 for cleaning air disposed on the front surface of the main body partition 32. And the filter 34
And a display unit 36.

In the above configuration, air is sucked in from an air inlet 37 provided in the front cover 35, passes through the filter 34 and is cleaned, and then passes through a partition air inlet 38 provided in the main body partition 32. The air is exhausted from an exhaust port 39 provided in the back 33 of the main body. At this time, the air passing through the partition inlet port 38 flows around the motor 51 of the electric blower 31 before being discharged from the outlet port 39.

FIG. 3 shows a structure for supporting the motor 51. As shown in FIG. First, the motor 51 includes a rotating shaft 52,
It has a bearing 53 for receiving it and a bearing box 54 for housing it. The bearing 53 and the bearing box 54 protrude from the end face of the motor 51. A shaft hole 55 is provided in an end surface of the bearing box 54, and one side of the rotating shaft 52 penetrates the shaft hole 55. Output side. When the motor 51 having the above configuration is supported, the bearing box 54 on the opposite side to the output side is attached to the main body partition wall 32 via the elastic body 56 disposed so as to surround the bearing box 54, and the bearing box 54 on the output side surrounds the bearing box 54. Elastic body 5 arranged to be
6 and a mounting plate 57 to be attached to a mounting boss 58 provided on the main body partition wall 32. Here, the elastic body 56 is made of an elastic material such as rubber, and the elastic body 56 on the opposite side to the output side is disposed in close contact with the motor 51 and the main body partition wall 32.

In the above electric equipment, the motor 5
Numeral 1 is supported on the main body partition wall 32 by using the elasticity of the elastic body 56 to prevent vibration.

[0007]

In the conventional electric apparatus shown in FIG. 3, the heat of the motor 51 itself generated when the motor 51 operates is cooled by the air flowing around the motor 51. Because the effect is created, the temperature rise is easily mitigated,
Non-output side bearing 53 generated when the motor 51 operates.
After passing through the bearing box 54, the heat of the elastic body 56 and the main body partition 3
2 or the motor 51 itself, so that the temperature rise of the bearing 53 is hardly alleviated, and there is a problem that the motor 51 is easily damaged such as seizure of the bearing 53.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has been made in consideration of the above-mentioned problems. The purpose is to provide equipment.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a bearing housing in which a bearing is provided, and a ventilation path is provided at a portion where an elastic body disposed so as to enclose the bearing housing is in contact with the bearing housing. The cooling plate is attached to a support plate provided with an air hole through the air hole. After the air passes through the air hole, the air flows through the air passage so that a cooling effect of the air on the bearing box is generated. It is an object of the present invention to provide an electric device which alleviates a rise in the temperature of the heated bearing and reduces damage to the motor caused by the rise in the temperature of the bearing.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION
In a support structure in which a bearing of a rotating shaft is provided in a bearing box protruding from a motor body and a motor is mounted on a support plate via an elastic body disposed so as to include the bearing box,
A ventilation path is provided at a portion where the bearing housing and the elastic body are in contact,
In addition, since the support plate is provided with a ventilation hole, and the motor is supported so that air flows through the ventilation hole and the ventilation path, the bearing box is cooled by utilizing the flow of air, and the bearing housing is provided therein. The heat of the bearing can be easily released.

According to a second aspect of the present invention, the elastic body and the support plate are provided with a bearing on the opposite side to the output side of the rotating shaft so that air does not flow through the end face of the bearing box having a hole in the end face. It prevents air from flowing into the bearing box from the hole of the bearing box, and promotes solidification and deterioration of the lubricating oil of the bearing due to the inflow of fine dust, thereby shortening the life of the bearing. Can be prevented from decreasing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 and FIG. 4 showing an example of an air purifier as in the prior art. Note that the same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

In the air purifier shown in FIG.
1, a main body partition 32, a main body rear 33, and a filter 3
4, the front cover 35, and the display unit 36 constitute the whole. In this configuration, air is sucked from the air inlet 37 provided in the front cover 35 and
After passing through 4 and being cleaned, it passes through a partition inlet 38 provided in the main body partition 32 and is discharged from an exhaust port 39 provided in the rear 33 of the main body. At this time, the air passing through the partition inlet port 38 flows around the motor 51 of the electric blower 31 before being discharged from the outlet port 39.

FIG. 1 shows a supporting structure of the motor 51. As shown in FIG. The motor 51 includes a rotating shaft 52 and a bearing 5.
3 and a bearing box 54. The bearing 53 and the bearing box 54 protrude from the end face of the motor 51. A shaft hole 55 is provided on an end face of the bearing box 54, and one side of the rotating shaft 52 penetrates the shaft hole 55. Output side.

When supporting the motor 51 having the above structure,
The non-output side bearing box 54 is attached to the main body partition wall 32 via the elastic body 11 disposed so as to include it, and the output side bearing box 54 is disposed so as to surround it. It is mounted on a mounting boss 58 provided on the main body partition wall 32 via the mounting plate 11 and the mounting plate 57.

Here, the elastic body 11 is made of an elastic material such as rubber, and a part thereof is cut out in a groove shape as shown in FIG. A ventilation path 12 is formed between the end face and the lip 13 for sealing the end face of the bearing box 54 between the main body partition 32 and a convex part in a circular shape.
Are formed. A vent hole 14 is provided in the main body partition wall 32 so as to be connected to the vent passage 12.

In the above configuration, the motor 51 is supported on the main body partition wall 32 by using the elastic force of the elastic body 11 for vibration isolation. The air passing through the partition inlet port 38 flows around the motor 51 before being discharged from the outlet port 39. Further, the air passes through the air passage 14, passes through the air passage 12, and flows around the motor 51. At this time, the air hole 1
The air passing through 4 does not flow through the end face of the bearing housing 54 due to the lip 13.

The operation of the above configuration is as follows.
A part of the air flowing in the air cleaner body by the action of the electric blower 31 is supplied from the vent hole 14 to the air passage 12.
Therefore, air flows on the side surface of the bearing box 54, and a cooling effect on the bearing box 54 can be produced. The state can be easily relaxed.

Further, since the end face of the bearing box 54 is sealed between the main body partition wall 32 and the lip portion 13, air passing through the ventilation hole 14 does not flow through the end face of the bearing box 54. It is possible to prevent solidification and deterioration of the lubricating oil of the bearing 53 due to the inflow of fine dust, thereby preventing the life of the bearing 53 from being shortened.

[0020]

According to the first aspect of the present invention,
The support structure of the motor is provided with a ventilation path at a portion where a bearing box containing a bearing and an elastic body disposed so as to include the bearing box are in contact with each other, and attached to a support plate having a ventilation hole via the elastic body. As a result, the air flows through the ventilation path after passing through the ventilation hole, which can produce a cooling effect on the bearing housing due to the air, and alleviates the temperature rise of the heat of the bearing provided therein. Thus, it is possible to reduce the damage of the motor caused by the temperature rise of the bearing.

According to the second aspect of the present invention, since the end face of the bearing box on the side opposite to the output side of the rotary shaft is sealed between the elastic body and the support plate, air is supplied to the end face of the bearing box. It can prevent the air from flowing into the bearing box through the hole provided on the end face of the bearing box, and can shut off the end face of the rotating shaft opposite to the output side from fine dust contained in the air. In addition, it is possible to reduce the life of the bearing and damage to the motor caused by the entry of fine dust into the gap between the rotating shaft and the bearing.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an electric device showing an embodiment of the present invention.

2A is a plan view of an elastic body used in the electric device. FIG. 2B is a cross-sectional view taken along line AA in FIGS.

FIG. 3 is a sectional view of a main part of a conventional electric device.

FIG. 4 is a side sectional view of an air purifier showing an example of a conventional electric device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Elastic body 12 Ventilation path 13 Lip part 14 Vent hole 32 Main body partition 51 Motor 52 Rotating shaft 53 Bearing 54 Bearing box 55 Shaft hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaaki Kayama 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. Terms (reference) 5H609 BB15 BB19 PP01 PP05 PP11 QQ02 QQ12 RR05 RR12 RR16 RR27 RR35 RR36 RR40 RR42 RR67 RR70 RR74

Claims (2)

[Claims] 1. A support structure in which a bearing of a rotary shaft is mounted in a bearing box protruding from a motor body and a motor is mounted on a support plate via an elastic body disposed so as to include the bearing box. An electric device in which a ventilation path is provided in a portion where a box and the elastic body are in contact with each other, and a ventilation hole is provided in the support plate, and a motor is supported so that air flows through the ventilation hole and the ventilation path. 2. A bearing housing having an anti-output side bearing of a rotating shaft, wherein an end face of a bearing box having a hole at an end face is sealed between the elastic body and the support plate so that air does not flow through. The electric device according to claim 1, wherein