JPS588225Y2 - Washing machine stirring blade support device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a stirring blade support device for a washing machine.

FIG. 2 shows a conventional stirring blade support device for a washing machine. In this FIG. The mounting hole 4 is a cylindrical bearing case that is watertightly inserted into the mounting hole 3 from above through a seal member 5 and is prevented from being pulled out downward by a flange portion 4a. , is fixed in the state shown in the figure by a nut 6 which is screwed and tightened onto its outer periphery from below.

7 is a reinforcing plate for reinforcing the bottom of the washing tub 2 which is interposed in advance between the outer surface of the bottom of the washing tub 2 and the nut 6; 1
1, and a stirring blade 12 located in the recess 1 is attached to the protruding upper end of the washing shaft.
are connected to each other, and a driven pulley 1 is connected to the protruding lower end.
3 are connected.

Note that 14 is a belt stretched between the driven pulley 13 and a driving pulley (not shown).

However, in the conventional structure described above, it is difficult to downsize the bearing case 4 due to the structural reason that the tension applied to the belt 14 when the stirring blade 12 is driven to rotate is also applied to the bearing case 4. Therefore, the nut 6 that is screwed onto the outer periphery of the bearing case 4 requires a large nut that is not available on the market, which not only increases the price but also requires a lot of work to install and remove the nut 6. The disadvantage is that it is difficult to do.

In addition, the number of parts increases due to the need for the reinforcing plate 7, and there is a possibility that the reinforcing plate 7 may generate chattering noise due to the rotational vibration of the stirring blade 120 and become a noise source.

The present invention was developed in view of the above circumstances, and its purpose is to make the bearing case smaller, and the nut to be made smaller accordingly, allowing the use of inexpensive commercially available nuts. To provide an agitator blade support device for a washing machine which has effects such as easy installation and removal of nuts, a reduction in the number of parts, and overall low cost production. .

An embodiment of the present invention will be described below with reference to FIG.

In Fig. 1, reference numeral 15 denotes a washing tub, and a shallow circular recess 16 formed at the bottom of the tub has a case accommodating part 17 in a substantially cylindrical shape whose diameter gradually decreases downward. It is integrally formed to protrude toward the direction.

In addition, the upper part of the case housing part 17 has a stepped part 1 which is an appropriate part by making the inner diameter larger than other parts.
7a is formed.

Reference numeral 18 designates a plurality of ribs (only two ribs are shown) for reinforcing the case accommodating portion 17, which are integrally hung and projecting from the outer surface of the bottom of the washing tub 15.
7b.

It has a shape that extends radially across the outer bottom surface 16a and the outer circumferential surface 16b of the recessed portion 16.

Reference numeral 19 denotes a substantially cylindrical bearing case whose diameter gradually decreases toward the bottom, and a flange-like portion 19 formed on the outer periphery of the upper part of the bearing case.
a to the step part 17a through an annular sealing member 20, and a small diameter cylindrical part 19b, which is a lower protrusion formed at the lower end, is made to protrude downward from the case accommodating part 17. There is.

Then, the nut 21 is screwed and tightened to the small diameter cylinder portion 19b of the bearing case 19, and the outer circumferential surface of the bearing case 19 is brought into pressure contact with the inner circumferential surface of the case accommodating portion 17, thereby closing the bearing case 19. It is fixed inside the case housing part 17.

Reference numeral 22 designates a washing shaft having a positioning collar 22a at an intermediate portion, and the washing shaft 22 is inserted from above into bearings 23 and 24, which are arranged and fixed in advance in the bearing case 19 vertically apart. The flange 22 a is brought into contact with the bearing 23 , and a sealing member 25 is interposed between the upper inner circumferential surface of the case accommodating part 17 and the washing shaft 22 , so that the washing shaft 22 is watertightly attached to the bearing case 19 . In addition, it is rotatably inserted and supported.

26 is a stirring blade located in the recess 16 and connected to the protruding upper end of the washing shaft 22; 27 is a driven pulley connected to the protruding lower end of the washing shaft 22; 28 is the driven pulley 27 and a driving pulley (not shown); A belt stretched between the

According to the present embodiment described above, the bearing case 19 is fixed in the case accommodating part 17 with its outer circumferential surface being pressed against the inner circumferential surface of the case accommodating part 17, and the washing tub 1
Since the glue 118 for reinforcing the bottom of the washing tub 1 is integrally provided to hang down and protrude from the outer surface of the bottom of the washing tub 1, the tension of the belt 28 applied to the bearing case 19 when the stirring blade 26 is driven to rotate is sufficiently received by the case accommodating portion 17. Therefore, the bearing case 19 can be downsized to the extent that it can be accommodated in the case accommodating portion 17, and the nut 21 can be screwed into the small diameter cylindrical portion 19b of the bearing case 19 that has been downsized in this way. Because of this structure, the nut 21 can be made smaller.

Furthermore, the number of parts can be reduced without requiring the reinforcing plate 7 as a separate part as in the conventional case, and noise such as chattering noise caused by the reinforcing plate 7 is also eliminated.

According to the present invention, as is clear from the above explanation, the bearing case can be made smaller, and the nut can also be made smaller, and an inexpensive commercial product can be used as the nut. To provide an agitation blade support device for a washing machine that can be easily removed and removed, eliminates the need for a separate part for reinforcing the bottom of the washing tub, reduces the number of parts, and can be manufactured at low cost overall. can be provided.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a view corresponding to FIG. 1 for explaining a conventional example. In the figure, 2 and 15 are washing tubs, 4 and 19 are bearing cases,
19b is a small diameter cylinder part (lower protruding part), 6 and 21 are nuts, 8 and 22 are cleaning shafts, 10, 11.23 and 24 are bearings, 12 and 26 are stirring blades, 17 is a case housing part, 17
a indicates a stepped portion (appropriate portion), and 18 indicates a rib.

Claims (1)

[Scope of utility model registration request] In a device in which an agitating blade is rotatably attached to the bottom of the washing tub, a cylindrical case accommodating portion integrally formed downwardly protruding from the bottom of the washing tub, and the case integrally protruding from the outer surface of the bottom of the washing tub. It has a rib for reinforcing the housing part and a washing shaft inside which is connected to the stirring blade, and is arranged so that the outer peripheral surface is in pressure contact with the inner peripheral surface of the case housing part, and the upper part is watertightly locked to an appropriate part. and a bearing case whose lower part protrudes from the case accommodating part, and a nut which is screwed onto the lower protrusion of the bearing case to fix the bearing case within the case accommodating part. Washing machine stirring blade support device.