JP2561554Y2 - Fan bearings for home appliances - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various home electric appliances, and more particularly to a bearing for a cross flow fan installed in an indoor unit of an air conditioner, and more particularly to a bearing capable of further suppressing fan vibration. .

[0002]

2. Description of the Related Art FIG. 3 shows a bearing of a conventional fan for an air conditioner indoor unit.
And a cylindrical support member 22 fitted into the hole 20. Main unit 2
Reference numeral 1 denotes a member made of a soft synthetic resin formed by integral molding, and the support member 22 is a hard cylindrical member that directly supports the rotation axis of the fan with a shaft hole 23 provided at the center thereof. . The support member 22 is provided in the hole 2 of the main body 21.
0 and fitted and fixed. The main body 21 is made of a material having a chloroprene rubber hardness of 45 degrees, and the support member 22 is made of a nylon resin.

[0003]

In this conventional bearing, the vibration generated by the rotation of the fan of the indoor unit is quite large, and it has been desired to reduce the vibration. An object of the present invention is to provide a bearing for suppressing vibration of a fan for the indoor unit and various home appliances, and furthermore, vibration of the home appliance itself.

[0004]

In order to solve the above-mentioned problems, the present invention is directed to a bearing for a cross-flow fan installed in a household electrical appliance, wherein the bearing is a soft plate-like member having a hole 14 formed substantially at the center. A plurality of the bodies 13 are laminated and arranged inside the hard cylindrical outer support member 10, and a hard cylindrical support member 16 having a shaft hole 17 for directly supporting the rotation axis of the fan is formed in a substantially central hole. It was arranged in the part 14. Further, in the above configuration, the hard cylindrical outer support member 10 is integrally formed with the housing of the home electric appliance, and the housing is assembled so that the cylindrical outer support member 10 is formed.

[0005]

The vibration of the rotating shaft of the fan installed in the home electric appliance is first transmitted to the cylindrical hard support member 16 at the substantially central portion, and thereafter, the laminated plates 13 made of a soft synthetic resin are used. The vibration was absorbed, and the vibration could be suppressed to be smaller than that of the conventional bearing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bearing used for a fan for an air conditioner indoor unit will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view illustrating an embodiment of the present invention. Reference numeral 10 denotes an outer support member, and an outer diameter of about 32 m
m, an inner diameter of about 23 mm, an axial length of about 14 mm, a cylindrical shape having a hollow portion 11 inside, and molded from hard ABS resin.

Reference numeral 13 denotes a plate-like body fitted into the hollow portion 11 of the outer support member 10. The plate-like body 13 has a hole 14 in the center and has a thickness of about 3 mm. It is a thin donut shape. The material is chloroprene rubber having a hardness of 45 degrees, and is a synthetic resin body having appropriate flexibility at room temperature. In this embodiment, these plate-shaped members 13 are superposed in the axial direction, and are fitted and fixed in the hollow portion 11 of the outer support member 10.

Reference numeral 16 denotes a support member for directly supporting the shaft of the fan, and the shaft of the fan is directly supported by a shaft hole 17 provided substantially at the center of the support member 16. The outer peripheral surface of the support member 16 is curved so that its axial center slightly swells outward, and the
Can be forcibly fitted into the hole portion 14 of FIG. As a result, the support member 16 is fixed in the hole 14 of the laminated plate 13. The material of the support member 16 is a hard nylon-based synthetic resin.

FIG. 2 is an overall perspective view showing a completed state of the embodiment of the present invention described above. A flexible plate 13 laminated on the inside of the outer support member 10 is located, and a rigid support member 16 is fixedly located at the center thereof to form a bearing for a fan in the air conditioner indoor unit. The shaft of the fan rotates in the shaft hole 17 of the support member 16, and the support member 16 supports the shaft of the fan.

Next, an experiment was conducted to compare the performance of the present invention with a conventional bearing, and as a result, the following table was obtained. In the table, the horizontal axis indicates the number of rotations (rpm) of the fan, and the vertical axis indicates the magnitude of the vibration of the bearing (acceleration · cm / sec). (A) is a result of the bearing of the above embodiment of the present invention,
(C) is the result of the conventional bearing (shown in FIG. 3). (B) has the same configuration as the above embodiment of the present invention, and uses a silicon rubber (having a hardness more flexible than that of the above embodiment) as the material of the plate-like body 13 which is different from that of the above embodiment. This is the result of the bearing. As can be seen from the experimental results, in the above embodiment, the vibration can be suppressed to less than one half compared with the conventional bearing, and the vibration of the bearing of FIG. Was able to be suppressed.

[0011]

[Table 1]

Next, as a second embodiment, although not shown, the rigid cylindrical outer support member 10 can be formed integrally with the housing of the air conditioner indoor unit. It is easy to design such that the cylindrical outer support member 10 is formed by assembling the housing of the indoor unit divided into several parts. In other words, the plate-like body 13 and the support member 16 described in the first embodiment may be disposed inside the cylindrical outer support member 10 integrated with the housing in the same manner as in the above-described embodiment. .

In this case, in order to maintain and fix the laminated plate 13 in the state of being laminated, the same material as the plate 13 or another flexible synthetic material is provided outside the plate 13. The ring 13 made of resin may be fitted to fix the plate 13, or the plate 13 may be fixed with a wide elastic band. This allows
Handling of the plate 13 and the support member 16 becomes easy,
Also, the work of fitting them into the outer support member 10 integrated with the housing becomes easy.

Although the embodiments have been described above, the shapes, sizes, materials, and the like of the components of the bearing according to the present invention can be appropriately changed in design. The number of plate-like bodies 13 arranged in the hollow portion 11 of the outer support member 10 is not limited to four, and may be four or more or four or less.
In the above embodiment, the bearing of the fan for the air conditioner indoor unit is exemplified, but the present invention can be used as it is as the bearing of the cross flow fan used in other household appliances. . Although the basis for the effect of the present invention is not clearly understood,
It can be considered that a soft member is arranged between the hard members arranged at the center and the outside, and the intermediate soft member is divided into a plurality of parts.

[0015]

According to the present invention having the above configuration, the vibration can be reduced by about one half or more as compared with the conventional fan bearing. As a result, the vibration of the home electric appliance itself can be further suppressed, and the noise can be reduced. As described above, the present invention has a simple configuration and exerts a remarkable effect.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment shown in FIG. 1 in a completed state.

FIG. 3 shows a bearing of a conventional fan for an air conditioner indoor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Outside support member 13 Plate-like body 14 Hole 16 Support member 17 Shaft hole

Claims (2)

(57) [Scope of request for utility model registration] 1. A bearing for a cross flow fan installed in a home appliance, comprising a plurality of soft plate-like members (13) having a hole (14) formed substantially at the center thereof, and A rigid cylindrical support member (16) having a shaft hole (17) for directly supporting the rotation axis of the fan is disposed in a substantially central hole (14). A bearing for a fan for home appliances characterized by being arranged. 2. The method according to claim 1, wherein the hard cylindrical outer support member (10) is formed integrally with the housing of the home appliance.
A bearing for a fan for home appliances, wherein a cylindrical outer supporting member (10) is formed by assembling a housing.