JPH07682A - Drive motor support device for washing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] Efficient power transmission by a conductive belt, and suppression of vibration and noise. [Structure] A pulley 9 directly connected to the pulsator 5 side and a motor pulley 13 of a drive motor 11 are conductively connected by a conductive belt 15, while the drive motor 11 is attached to a mounting surface 23 of a floor panel 21 of a washing machine body 1. The mounting surface 23 of the floor panel 21 supported by a plurality of elastic bodies 19
Is inclined with respect to the horizontal plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive motor supporting device for a washing machine.

[0002]

2. Description of the Related Art Conventionally, as a general supporting means for supporting a drive motor of a washing machine, for example, one shown in FIG. 8 is known.

That is, the floor panel 10 of the washing machine body 101.
A support bracket 107 extended from the motor body of the drive motor 105 is supported on the mounting surface of the third motor 3 via an elastic body 109.

The elastic body 109 is made of a material such as rubber and is formed into a cylindrical shape having a mounting groove 111 in the circumferential direction at a substantially central portion thereof.
The structure is bolted to the mounting surface of No. 3.

[0005]

As described above, the elastic body 1 is used.
09 has a vibration isolation function of absorbing vibration from the drive motor 105, in addition to a support function of supporting the drive motor 105.

By the way, the power from the drive motor 105 is transmitted by the transmission belt 121 wound around the motor pulley 115 and the pulley 119 of the pulsator 117, so that the transmission belt 1 is prevented from slipping.
21 needs a certain amount of tension. For this reason, the elastic body 109 is required to have a certain strength and rigidity to be stepped against the tension in the horizontal (arrow) direction, and it is necessary to have a predetermined hardness. On the other hand, this hardness has hardness also in the vertical direction (pulling direction), which means that the absorption of vibrations in the vertical direction becomes poor.

To increase the absorption rate of vibration, the elastic member 109
Although it is sufficient to provide the flexibility, the tension force is weakened and the tension force of the conductive belt 121 is affected, so that the power transmission rate is deteriorated. On the contrary, if the strength and rigidity of the elastic body 109 is increased and the tension is increased to secure the tension of the conductive belt 121, the absorption rate of vibration is deteriorated, and the absorption rate of vibration and the power transmission rate of the conduction belt 121 are different. There was a conflicting relationship.

Therefore, an object of the present invention is to provide a drive motor supporting device for a washing machine which does not lose the tension of the conductive belt by a simple device and does not adversely affect the vibration absorption. There is.

[0009]

In order to achieve the above object, the present invention comprises a pulley directly connected to the pulsator side,
While conductively connecting the motor pulley of the drive motor with a conduction belt, the drive motor is supported on the mounting surface of the floor panel of the washing machine body via a plurality of elastic bodies, and the mounting surface of the floor panel is in relation to a horizontal plane. It is tilted.

As a preferred embodiment, the mounting surface is inclined in the radial direction with respect to the motor shaft center line of the drive motor.

[0011]

According to such a drive motor supporting device, the force in the tension direction generated on the elastic body by the conductive belt during operation is decomposed in the horizontal direction and the vertical direction by the inclination angle of the mounting surface, and as a result, the elastic body is generated. The horizontal force acting is smaller than the tension of the conductive belt.

Therefore, the strength and rigidity of the elastic body, that is, the flexibility, can be increased by the amount of the reduced tension, and the floor board panel can be decomposed in the horizontal and vertical directions even in the vertical vibration. The vibrations transmitted to you are small.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS.

In the figure, reference numeral 1 denotes a washing machine main body. Inside the washing machine main body 1, a washing tub 3 and a dehydration tub (not shown) are arranged.

The washing tub 3 has a pulsator 5 at the bottom,
It is fixed by the washing machine body 1 and the bottom plate panel 21.

The pulsator 5 is attached to a transmission shaft 7 extending from the bottom of the washing tub 3, and a pulley 9 is attached to the transmission shaft 7 extended to the outside.

The pulley 9 is conductively connected to the motor pulley 13 of the drive motor 11 via a transmission belt 15 so that the rotational power from the drive motor 11 is applied.

In the drive motor 11, a support bracket 17 is extended from the motor body, and the support bracket 17 is bolted to a mounting surface 23 of the bottom plate panel 21 of the washing machine body 1 with a fixing bolt 25 via an elastic body 19. ing.

The elastic body 19 is formed of an elastically deformable material into a cylindrical shape having a mounting groove 27 in the circumferential direction, and the support bracket 17 is fitted and supported in the mounting groove 27.

On the other hand, the mounting surface 23 of the floor panel 21 is inclined at a predetermined angle θ with respect to the horizontal plane G. Although the inclination direction of the attachment surface 23 is a shape that is inclined upward with respect to the pulling direction (arrow a) by the conductive belt 15, it may be a shape that is inclined downward as shown in FIG.

According to the drive motor supporting device thus constructed, the rotational power from the drive motor 11 is transmitted to the pulsator 5 via the transmission belt 15.

At the time of this operation, the elastic body 19 is shown in FIG.
Vertical direction (Y direction) and horizontal direction (X direction)
Force of.

That is, if the force generated by the tension of the conductive belt 15 is F1, the upper one of the forces generated in the vertical direction is F2, and the lower one is F3, the vertical direction is generated when the drive motor vibrates in the upward direction. Direction: F1 ・ Y + F2 ・ Y ≒ F2 ・ Y (horizontal direction: F1 ・ X-F2 ・ X ≒ -F2 ・ X) Vertical direction: F1 ・ Y-F3 ・ Y ≒ -F3 ・Y (horizontal direction: F1 · X + F3 · X≈F3 · X).

In the case of FIG. 3 in which the inclination directions are different,
When the motor is oscillating vertically: Vertical direction: -F1 ・ Y + F2 ・ Y≈F2 ・ Y (Horizontal direction: F1 ・ X + F2 ・ X≈F2 ・ X) When the motor is oscillating vertically: Vertical direction: -F1 ・ Y-F3・ Y≈−F3 · Y (horizontal direction: F1 × X−F3 · X≈−F3 · X), and the force F1 due to the tension of the conductive belt 15 is larger than the forces F2 and F3 at the time of vertical vibration of the drive motor 11. Therefore, the resultant force can be approximated as described above and the elastic body 19 can be made flexible.

On the other hand, the vertical vibration force of the drive motor 11 acting on the floor panel 21 is only the vertical component of the force generated in each direction, and the horizontal vibration force is removed from the original vibration force. Just smaller. Therefore, the vibration absorption by the elastic body 19 is improved, and the vibration and noise can be suppressed small.

6 and 7 show the mounting surface 2 of the floor panel 21.
3 shows a modified example of No. 3.

The mounting surface 23 in FIG. 6 has a shape that is inclined upward in the radial direction toward the motor shaft center line W of the drive motor 11.

Further, the mounting surface 23 of FIG.
1 has a shape that is inclined downward in the radial direction toward the motor shaft center line W.

Therefore, according to this embodiment, the mounting surface 23 of the floor panel 21 has different tilting directions on the left and right sides of the motor axis W, and the mounting surfaces 23 differing in tilting direction. Thus, the support stanchions are formed by combining them, and the vibration can be efficiently absorbed without being influenced by the direction of the vibration. Moreover, the tension of the conductive belt 15 can be reliably ensured.

[0030]

As described above, according to the drive motor supporting device of the present invention, it is possible to give flexibility to the elastic body by a simple device for inclining the mounting surface, and at the same time, the conductive belt The tension can be reliably secured, and efficient power transmission can be obtained. Also, vibration and noise can be suppressed to a low level.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a supporting device of a drive motor according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view showing an embodiment in which a mounting surface has a different inclination direction.

FIG. 4 is an operation explanatory view of the mounting surface of FIG.

5 is an explanatory view of the operation of the mounting surface of FIG.

FIG. 6 is an explanatory view showing a modified example of a mounting surface.

FIG. 7 is an explanatory view showing a modified example of a mounting surface.

FIG. 8 is an explanatory view similar to FIG. 1 showing a conventional example.

[Explanation of symbols]

 1 Washing Machine Main Body 5 Pulsator 9 Pulley 11 Drive Motor 13 Motor Pulley 15 Conductive Belt 21 Floor Board Panel 23 Mounting Surface

Claims (2)

[Claims] 1. A pulley directly connected to a pulsator side and a motor pulley of a drive motor are conductively connected by a conduction belt, and the drive motor is attached to a mounting surface of a floor panel of a washing machine body through a plurality of elastic bodies. A drive motor supporting device for a washing machine, which is supported, and the mounting surface of the floor panel is inclined with respect to a horizontal plane. 2. A pulley directly connected to the pulsator side and a motor pulley of a drive motor are conductively connected by a conductive belt, and the drive motor is attached to a mounting surface of a floor panel of a washing machine body via a plurality of elastic bodies. A drive motor supporting device for a washing machine, which is supported and in which a mounting surface of the floor panel is inclined in a radial direction with respect to a motor shaft center line of the drive motor.