JPH0762536B2 - Bearing support structure for indoor fans - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing support structure for an indoor fan installed in an indoor unit of an air conditioner, particularly a separate type air conditioner.

[0002]

2. Description of the Related Art An air conditioner equipped with a compressor and utilizing a refrigeration cycle by expansion and compression of a refrigerant includes an integrated air conditioner in which the entire refrigeration cycle is incorporated in one casing, a compressor and an outdoor unit. There is a separate air conditioner that is divided into an outdoor unit having a built-in heat exchanger and the like, and an indoor unit having an indoor heat exchanger, an indoor fan, etc., and connected by a refrigerant pipe.

5 to 8, an indoor unit a in a conventional separate type air conditioner has an indoor heat exchanger c fixed to an indoor side opening of a box-shaped indoor unit base b and end plates h at both ends thereof. The indoor heat exchanger c is provided with an elongated cylindrical indoor fan d such as a cross flow fan in the indoor unit base b behind the indoor heat exchanger c so as to fill the width of the indoor heat exchanger c. The lower opening of c forms an outlet e, and one end of the drive shaft k of the indoor fan d has a side wall b2 of the indoor unit base b.
Is connected to the fan motor f and penetrates through and is supported at the other end by a bearing g fixed to the side wall b1 of the indoor unit base b.

In the fixing structure of the bearing g fixed to the side wall b1 of the indoor unit base b, the engaging groove j formed on the outer periphery has the side wall b.
No. 1 is fitted into the engaging projection i provided on the inner circumference of the mounting hole b3, and when assembled, the bearing g is deformed to forcefully fit into the mounting hole b3 to engage with the engaging projection i. The groove j is fitted (see FIGS. 7 and 8).

As another fixing structure, as shown in FIG. 9, a substantially semicircular mounting portion is formed on the side wall b1 of the indoor unit base b to fit the bearing g, and the bearing pressing plate m is used. It is known that the bearing g is pressed and fixed with fixing screws n, n.

[0006]

However, in the above-mentioned conventional fixing structure of the bearing g, the bearing g is assembled at the time of assembly.
Forcibly fitting the mounting hole b3 while deforming
There is a problem that it is difficult to insert and assembly work is difficult,
Further, in the case where the bearing g is held by the bearing holding plate m and fixed by the fixing screws n, n, the number of parts is large, and
There was a problem that assembly workability was low.

An object of the present invention is to provide a bearing support structure for an indoor fan, which can reduce the number of parts, improve the assembly workability, and reduce the production cost by simplifying the structure. Is.

[0008]

In order to achieve the above object, the bearing support structure for an indoor fan according to the present invention is an indoor fan equipped with an indoor heat exchanger and an indoor fan bearing. A bearing support part consisting of a substantially semicircular notch to be fitted and a bearing retainer plate support part consisting of rectangular notches continuous at both ends of the bearing support part are provided on the side wall of the indoor unit base, and the bearing is fitted to the bearing support part. After fitting, the bearing holding plate is fitted to the bearing holding plate supporting portion to hold the bearing, and an elastic pressing member is arranged between the end plate of the indoor heat exchanger and the bearing holding plate. , The assembling work is performed by combining them in order, the assembling work is facilitated, the assembling error is less likely to occur, the working time can be shortened, and the manufacturing cost is reduced due to the small number of parts. It is possible to promote a reduction in the door.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4. In an indoor unit 1, an indoor heat exchanger 3 is installed in an indoor opening of a box-shaped indoor unit base 2, The lower opening of the device 3 is used as an air conditioning air outlet 4.

At the bearing supporting position of the side wall 20 of the indoor unit base 2, a bearing supporting portion 21 having a substantially semicircular notch into which the bearing 5 supporting the shaft 81 of the indoor fan 8 is fitted, and the bearing supporting portion 21.
And a bearing holding plate support portion 22 formed by a rectangular cutout having a side larger than the diameter of the bearing support portion 21 continuous with both ends of the indoor heat exchanger 3 side. An engaging projection 23 is provided on the opening side of the bearing, and engaging grooves 24, 25 are provided on the opening side of the bearing pressing plate support portion 22.

Engagement grooves 51 are provided all around the outer circumference of the bearing 5, and when the bearing 5 is fitted into the bearing support portion 21, the engagement groove 51 of approximately half circumference is engaged with the bearing support portion 21. The bearing retainer plate 6 is engaged with the projecting ridge 23, the bearing retainer plate 6 is fitted to the bearing retainer plate support portion 22, and the bearing retainer portion 60, which is provided in the bearing retainer plate 6 and includes a substantially semicircular cutout, retains the bearing 5. The bearing pressing portion 60 is formed with an engaging ridge 61,
It is engaged with the engagement groove 51 of the bearing 5. Also, the bearing retainer plate 6
Engaging ridges 62, 6 on the sides in the direction substantially orthogonal to the indoor heat exchanger 3 of
3 are formed and engage with the engaging grooves 24 and 25 of the bearing pressing plate support portion 22, respectively.

In the fixing end plates 7 provided at both ends of the indoor heat exchanger 3, a cutting protrusion projecting to the bearing pressing plate 6 side is provided at a position corresponding to the bearing pressing plate 6 of one end plate 7 on the bearing 5 side. A bearing pressing claw (pressing member) 71 formed by raising is formed, and the bearing pressing claw 71 presses and fixes the bearing pressing plate 6.

Next, the assembly procedure will be described. First, the bearing 5 is fitted into the bearing supporting portion 21 of the side wall 20 of the indoor unit base 2, and the engaging groove 51 of the bearing 5 is fitted into the engaging protrusion 51 of the bearing supporting portion 21. After engaging with the strip 23, the bearing retainer plate 6 is inserted into the bearing retainer plate support portion 22 with the engaging protrusions 62, 63 being the engaging grooves 24, 25 of the bearing retainer plate support portion 22.

The bearing retainer plate 6 inserted into the bearing retainer plate support portion 22 is brought into contact with the bearing 5, and the engaging groove 61 of the bearing 5 is engaged with the engaging protrusion 61 of the bearing retainer portion 60. Heat exchanger 3
By fixing the end plate 7 of, that is, by fixing the indoor heat exchanger 3, the bearing pressing claw 71 of the end plate 7 on the bearing 5 side presses and fixes the bearing pressing plate 6.

In the above-described embodiment, the bearing pressing claw 71 is formed by cutting and raising with one end cut off so as to project toward the bearing pressing plate 6 side.
The end plate 7 is not limited to 71.
It may be a cut-and-raised piece having an inverted concave shape continuous with the above, or may be formed by an elastic member such as a spring plate. Further, the bearing pressing plate 6 side may be provided with a pressing portion formed of cut-and-raised parts or an elastic member, and the bearing pressing plate 6 side may be provided with a recess for engaging with the bearing pressing claw 71.

[0016]

Since the present invention is configured as described above, the assembly work is performed by combining them in order, which facilitates the assembly work and
Assembling mistakes are less likely to occur and work time can be shortened. Further, since the number of parts is small, it is possible to promote a reduction in manufacturing cost.

[Brief description of drawings]

FIG. 1 is a side view of an indoor unit according to the present invention.

FIG. 2 is an enlarged side view of a main part of the bearing support structure according to the present invention.

FIG. 3 is an enlarged plan view of a main part of the bearing support structure according to the present invention.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a side view of a conventional indoor unit.

6 is a sectional view taken along line VI-VI in FIG.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a cross-sectional view showing a conventional bearing assembly operation.

FIG. 9 is an enlarged side view of a main part of another conventional example of a bearing support part.

[Explanation of symbols]

 1 Indoor unit 2 Indoor unit base 3 Indoor heat exchanger 4 Air conditioning air outlet 5 Bearing 6 Bearing holding plate 7 Ent plate 8 Indoor fan 71 Bearing holding claw

Claims (1)

[Claims] 1. An indoor unit provided with an indoor heat exchanger and an indoor fan, comprising: a bearing support part into which a bearing of the indoor fan fits; and a bearing retainer plate support part continuous to both ends of the bearing support part. It is provided on the side wall of the indoor unit base, and after the bearing is fitted to the bearing support part, the bearing hold plate is fitted to the bearing hold plate support part to hold the bearing, and the end plate of the indoor heat exchanger and the bearing hold plate. A bearing support structure for an indoor fan, characterized in that a pressing member having elasticity is disposed between and.