JP2013128634A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine preventing generation of noise caused by transmission of vibration of a motor to a water tank or a rotary drum and preventing generation of noise caused by inclination of the motor due to belt tension, when the motor is rotationally driven.SOLUTION: The washing machine includes: a body; the rotary drum into which laundry is fed; the water tank which stores the rotary drum therein and is supported by an elastic support mechanism from the body; the motor fixed to the outer bottom of the water tank via a buffer material; control means for controlling a series of processes such as a washing process, a rinsing process, a dehydrating process and a drying process and controlling rotation of the motor; a motor pulley fixed to a motor shaft of the motor via a buffer material; a rotary shaft which is rotatably supported by the water tank and has one end to which the rotary drum is fixed and the other end to which a driven pulley is fixed; and the belt for transmitting rotation of the motor pulley to the driven pulley. The motor pulley is rotatably supported by the water tank.

Description

  The present invention relates to a belt transmission type washing machine in which a rotating drum is rotated by a motor via a belt.

  Conventionally, a belt transmission type washing machine that rotates a rotating drum with a motor via a belt transmits the rotation of a motor fixed to a water tank to a driven pulley provided on a rotating shaft of the rotating drum. Was directly fixed to the motor shaft (see, for example, Patent Document 1).

  3 and 4 show a conventional washing machine, and its configuration will be described below. The main body 31 of the washing machine supports the water tank 32 in a vibration-proof manner by an elastic support mechanism (not shown). The rotating drum 33 has a dewatering hole 41 and a stirring protrusion 36 on a side wall. The rotating shaft 35 rotatably supported at the center of the back surface of the water tank 32 has a rotating drum fixed at one end and a driven pulley 37 fixed at the other end.

  The motor 20 is fixed to the outer bottom portion of the water tank 32 through a cushioning material, and a belt 38 is provided to transmit the rotation of the motor 20 to the driven pulley 37, one being the driven pulley 37 and the other being the motor shaft 39. It is hung on a motor pulley 43 fixed directly to the motor.

  When the laundry put in the rotary drum 33 is subjected to a process such as washing or dehydration, the motor 20 is controlled to rotate by the control means 34 and the rotation is transmitted to the driven pulley 37 via the belt 38. As a result, the rotating shaft 35 fixed to the driven pulley 37 and the rotating drum 33 fixed to the rotating shaft 35 rotate. At the time of washing, the clothes infiltrated with the washing water by the rotation of the rotating drum 33 are lifted by the stirring protrusions 36 and washed by holding the clothes by the mechanical force dropped by their own weight. The laundry is attached to the inner wall of the rotating drum, and the washing water is blown off from the dewatering hole 41 into the water tank 32 to perform dewatering.

JP 2009-78056 A

  However, with such a conventional washing machine configuration, vibration from the motor is transmitted to the water tank and the rotating drum, and noise is generated. Further, when the motor is fixed to the water tank via a cushioning material such as rubber so that the vibration of the motor is not transmitted to the water tank and the rotating drum, the motor is inclined toward the driven pulley by the belt tension as shown in FIG. As a result, the parallelism of the motor pulley is lost, the belt wears unevenly, and noise is generated.

  The present invention solves the above-described conventional problems. In the washing machine, the vibration of the motor is prevented from being transmitted to the water tank or the rotating drum, and the parallelism between the driven pulley and the motor pulley is reduced by the inclination of the motor due to the belt tension. The purpose is to prevent disappearance.

In order to achieve the above object, the present invention provides a housing, a rotating drum into which laundry is put, a water tank that houses the rotating drum and is supported by an elastic support mechanism from the housing, and an outside of the water tank. A motor fixed through a cushioning material, a control means for controlling a series of processes such as a washing process, a rinsing process, a dehydrating process, and a drying process and a rotation of the motor, and a motor shaft of the motor via a cushioning material A motor pulley fixed to the water tank, a rotary shaft that is rotatably supported by the water tank, the rotating drum is fixed to one end, and a driven pulley is fixed to the other end, and a belt that transmits the rotation of the motor pulley to the driven pulley. And the motor pulley is rotatably supported by the water tub by a motor pulley support portion.

  As a result, the vibration of the motor is transmitted to the water tank and the rotating drum to prevent the generation of noise, and the parallelism between the driven pulley and the motor pulley is lost when the motor is tilted. This is to prevent this.

  In the washing machine of the present invention, when the motor is driven to rotate, the vibration of the motor is transmitted to the water tank or the rotating drum to prevent noise from being generated. It is possible to prevent wear and noise.

Side sectional view of the washing machine according to Embodiment 1 of the present invention. (A) Side view showing the motor and motor pulley mounting structure of the washing machine (b) Main part side sectional view showing the motor mounting part (c) Main part side sectional view showing the motor pulley mounting part Side sectional view of a conventional washing machine The figure which shows the inclination of the motor by the belt tension of the conventional washing machine

  According to a first aspect of the present invention, there is provided a housing, a rotating drum for loading laundry, a water tank that accommodates the rotating drum and is supported by an elastic support mechanism from the housing, and a buffer material outside the water tank. A fixed motor, a control means for controlling a series of processes such as a washing process, a rinsing process, a dehydrating process, and a drying process, and a rotation of the motor, and a motor pulley fixed to a motor shaft of the motor via a buffer material A rotating shaft that is rotatably supported by the water tank, the rotating drum is fixed to one end, and a driven pulley is fixed to the other end, and a belt that transmits the rotation of the motor pulley to the driven pulley, The motor pulley is a washing machine characterized in that the motor pulley is rotatably supported by a motor pulley support part. With this configuration, vibration from the motor is transmitted to the water tank and the rotating drum to prevent noise generation, the belt is tilted toward the driven pulley by the belt tension, the parallelism between the driven pulley and the motor pulley is lost, and the belt is biased. It is possible to prevent wear and noise.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side sectional view of a washing machine according to Embodiment 1 of the present invention, FIG. 2 (a) is a side view showing a mounting structure of a motor and a motor pulley, and FIG. 2 (b) is a side sectional view of an essential part showing a motor mounting portion. FIG. 2 and FIG. 2C are cross-sectional side views showing the main part of the motor pulley mounting part.

1 and 2, a casing 1 of a washing machine houses a rotating drum 2 into which laundry is put and a water tank 4 that is supported by a suspension 3 in a vibration-proof manner. A rotating shaft 7 rotatably supported at the center of the back surface of the water tank 4 has a rotating drum 2 fixed to one end and a driven pulley 8 fixed to the other end. A motor 5 is fixed to the outer bottom of the water tank with a cushioning material 10A such as rubber interposed therebetween. Thereby, the vibration due to the rotational drive of the motor 5 is attenuated by the buffer material 10A, and is prevented from being transmitted from the motor mounting portion to the water tank.

The belt 6 that transmits the rotation of the motor 5 is hung on the motor pulley 9 and the driven pulley 8 with a predetermined tension.
The motor pulley 9 is fixed to the motor shaft 5a of the motor 5 with a cushioning material 10B such as rubber interposed therebetween. As a result, the vibration caused by the rotational drive of the motor 5 is attenuated by the buffer material 10B and can be prevented from being transmitted from the motor shaft 5a to the motor pulley 9 and the water tank 4 to generate noise.

The control means 13 controls a series of processes such as a washing process, a rinsing process, a dehydrating process, and a drying process for washing the laundry put in the rotary drum 2. The motor 5 is controlled to rotate by the control means 13, and the rotation is transmitted to the driven pulley 8 via the motor pulley 9 and the belt 6, whereby the rotating shaft 7 fixed to the driven pulley 8 and the rotating shaft 7 are fixed. The rotated drum 2 thus rotated rotates.
In FIG. 2, the motor pulley 9 has a cylindrical shape, and is rotatably attached to a motor pulley support portion 12 formed on the outer bottom portion of the water tank 4 via a bearing 11. As a result, the motor pulley 9 is supported by the water tub 4 by the motor pulley support portion 12, so that the motor 5 is stressed by the tension of the belt 6 as in the motor of the conventional washing machine shown in FIG. It is possible to prevent the motor from being tilted by being compressed. That is, the parallelism between the driven pulley 8 and the motor pulley 9 is not lost, and it is possible to prevent the belt 6 from being worn away or generating noise.

  As described above, according to the present invention, when the motor is driven to rotate, the vibration of the motor is transmitted to the water tank or the rotating drum to prevent noise from being generated. Since it becomes possible to prevent generation | occurrence | production, it is useful as a use to a washing machine etc.

DESCRIPTION OF SYMBOLS 1 Case 2 Rotating drum 3 Suspension 4 Water tank 5 Motor 5a Motor shaft 6 Belt 7 Rotating shaft 8 Driven pulley 9 Motor pulley 10A, 10B Buffer material 11 Bearing 12 Motor pulley support part

Claims (1)

A housing, a rotating drum for loading laundry, a water tank that houses the rotating drum and is supported from the housing by an elastic support mechanism, a motor fixed to the outside of the water tank via a cushioning material, and cleaning A control means for controlling a series of processes such as a process, a rinsing process, a dehydrating process, a drying process, and the rotation of the motor, a motor pulley fixed to a motor shaft of the motor via a buffer material, and rotating in the water tank A rotating shaft that is supported freely, the rotating drum is fixed to one end, and a driven pulley is fixed to the other end; and a belt that transmits the rotation of the motor pulley to the driven pulley. A washing machine characterized in that it is rotatably supported by a support part.