JP2006068274A - Spin-dryer or washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spin-dryer or washing machine with less propagation of vibration to a body of the machine at the time of spin-drying. <P>SOLUTION: The spin-dryer or washing machine comprises a rotary drum 2 disposed rotatably inside a tub 1, a motor 3 to drive the rotary drum 2 and a rotating body 4 with a gyroscopic function disposed in the tub 1. When the tub 1 is vibrated by the rotation of the rotary drum 2 caused by the unbalanced load, the rotating body 4 disposed in the tub 1 is also vibrated at the same time, so that the vibration of the tub 1 is inhibited because of the effect of inhibiting the variation of the position of the rotating body 4. The rotating body 4 with the gyroscopic function does not have a resonance characteristic common to such vibration attenuation means as a spring, rubber or a damper, and has a strong reaction against accelerated change, so that unnecessary vibration such as the resonance characteristic the vibration attenuation means have can be inhibited. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dehydrator or a washing machine having a vibration isolator.

  A conventional washing machine having a dehydrating function will be described with reference to FIG.

In FIG. 4, the washing machine main body 21 includes a housing 22, an outer tub 23 built in the housing 22, a rotating drum 24 that is rotatably supported and included in the outer tub 23, and a rotating drum 24. And a motor 25 to be driven. The upper part of the outer tub 23 has a spring body from the ceiling of the housing 22 in order to prevent vibration due to imbalance generated from the bias of the clothes in the middle of the rotation of the rotating drum 24 from being transmitted to the housing 22. 26, and the lower part of the outer tub 23 is supported by an anti-vibration damper 27 (see, for example, Patent Document 1).
JP-A-6-31090

  However, in the configuration of the conventional washing machine, the method of reducing the rotational vibration by the rotating drum 24 is reduced by the vibration damping means such as the spring body 26 and the vibration damping damper 27 provided between the outer tub 23 and the housing 22. Therefore, the effect is limited to a specific vibration damping effect range based on the vibration damping characteristics of the vibration damping means. However, the vibration of the rotary drum 24 also changes in the amount, position, and rotation speed of the laundry in the rotary drum 24, and the resonance point of the vibration also changes, so that the vibration attenuation of the spring body 26 or the vibration damping damper 27, etc. There was a problem that it could not be adequately handled by means alone.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a dehydrator or a washing machine that can reliably suppress the vibration of a rotating drum over a wide range and can reduce the vibration transmitted to the main body. To do.

  In order to solve the conventional problems, a dehydrator or a washing machine of the present invention includes a rotating drum rotatably disposed in a tub and a motor for driving the rotating drum, and the jar has a gyro function. When the tank vibrates due to the rotating load of the rotating drum, the stabilizing means attached to the tank is also subjected to vibration at the same time. The In addition, the stabilizing means having a gyro function does not have a resonance characteristic common to vibration damping means such as a spring, rubber, or an anti-vibration damper, and has a strong reaction against acceleration change. Unnecessary vibration can be suppressed.

  Since the dehydrator or the washing machine of the present invention can receive the abnormal rotation energy of the rotating drum by the gyro function part, the vibration energy is not transmitted to the main body side and the noise is low.

  A first invention is provided with a rotating drum rotatably arranged in a tank and a motor for driving the rotating drum, and a stabilizing means having a gyro function is arranged in the tank, and the tank is a rotating drum. Since the stabilizing means attached to the tank is also subjected to vibration at the same time, the vibration of the tank is also suppressed by the effect of suppressing the positional fluctuation of the stabilizing means. In addition, the stabilizing means having a gyro function does not have a resonance characteristic common to vibration damping means such as a spring, rubber, or an anti-vibration damper, and has a strong reaction against acceleration change. Unnecessary vibration can be suppressed.

  In the second invention, in particular, the number of rotations of the stabilizing means of the first invention is changed, and the energy required to cancel it according to the degree of the eccentric load of the rotating drum is supplied to the rotation of the stabilizing means. It can be generated by changing the number.

  In particular, the third invention is provided with vibration detecting means for detecting the vibration of the tank of the second invention, and the rotation speed of the stabilizing means is changed in accordance with the output of the vibration detecting means. The vibration state can be instantaneously replaced as a change in the rotational speed of the stabilizing means, and the vibration of the tank can be suppressed.

  In the fourth aspect of the invention, in particular, the rotation of the stabilizing means precedes the rotation of the rotating drum according to any one of the first to third aspects of the invention. Since the gyro function is made effective, the increase in the uneven load of the rotating drum can be peaked out, and the uneven load of the rotating drum can be kept small.

  In the fifth invention, in particular, the stabilizing means according to any one of the first to fourth inventions is formed of a rotating body, and the outer peripheral portion of the rotating body is formed heavier than the central portion, thereby improving the gyro function. While reducing the weight of the body.

  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)
FIG. 1 is a schematic cross-sectional view of a washing machine according to a first embodiment of the present invention.

  In FIG. 1, a rotating drum 2 is rotatably supported and contained in a tank 1, and the rotating drum 2 is attached to a shaft of a motor 3, and the motor 3 is fixed to the tank 1. The tub 1 is received by a damper 8 attached to the bottom surface 12 of the washing machine main body 10, and is suspended from a beam 13 inside the washing machine main body 10 by a spring 7. The opening 1 a of the tub 1 is opened and closed by a lid 9 provided in the washing machine body 10, and is used for putting the laundry 14 in and out of the rotary drum 2.

  The joint 11 between the tub 1 and the washing machine body 10 uses elastic rubber or the like. A pedestal 16 is fixed on the motor 3 side of the tank 1, and a rotator 4 and a gyro motor 15 for rotating the rotator 4 are attached to the pedestal 16 as stabilizing means having a gyro function.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the washing machine main body 10 performs washing and dehydration by changing the rotation speed of the motor 3. At the time of dehydration, the rotational speed of the rotating drum 2 is increased to a higher rotational speed than at the time of washing in order to shake off the moisture of the laundry 14 by centrifugal force. At this time, if the laundry 14 is offset in the rotating drum, an unbalanced load is generated in the rotation of the rotating drum 2 and a vibration that shifts the rotating shaft is generated. Even if there is some uneven load, there is no problem if the centripetal force of the rotating drum 2 itself is large due to the rotation, but when the laundry 14 is largely biased or the rotating speed of the rotating drum 2 is not sufficiently increased, the unevenness of the rotating drum 2 The force of the load vibration increases and the vibration propagates to the tank 1 as well.

  By suppressing the amplitude of the vibration as much as possible, the vibration of the washing machine body 10 itself is suppressed. In the gyro function, when the rotating body 4 is rotated by the gyro motor 15, the rotating body 4 generates a force to keep the rotating position. Therefore, when the tank 1 tries to vibrate, the rotating body 4 also receives the vibration. An attempt is made to cause fluctuations, and a reaction of position fluctuations occurs in the rotating body 4 so that the tank 1 is not vibrated after all. The vibration absorbers of the damper 8 and the spring 7 are effective in preventing vibration when used in combination with the gyro function of the rotating body 4, but this method of using the vibration absorber tends to produce resonance characteristics, which It tends to occur at a rotational speed up to the stable rotational speed of the dehydration process of the drum 2.

  The gyro function also has an advantage that the amplitude of the resonance characteristic is made as small as possible to smoothly shift the rotation of the rotary drum 2 to the rotation speed at which the centripetal force increases. Since the joint portion 11 of the tub 1 with the washing machine body 10 is formed of elastic rubber or the like, it becomes a vibration absorber that absorbs vibration propagating from the tub 1 to the washing machine body 10.

  As described above, according to the present embodiment, the rotary drum 2 rotatably disposed in the tank 1 and the motor 3 that drives the rotary drum 2 are provided, and the tank 1 has a gyro motor 15 having a gyro function. When the tank 1 vibrates due to the unbalanced rotation of the rotary drum 2 by arranging the rotating body 4 driven by the above, the gyro function attached to the tank 1 is also vibrated at the same time. The vibration of the tank 1 can be reliably suppressed.

(Embodiment 2)
FIG. 2 is a schematic sectional view of a washing machine according to the second embodiment of the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 2, the washing machine main body 10 in the present embodiment is attached to the outer periphery of the tub 1 and attached to the control circuit 6 that controls the rotation of the motor 3 and the gyro motor 15, the power supply circuit 17, and the tub 1. And a vibration detection means 5 for detecting vibration, and the vibration detection means 5 is connected to a control circuit 6.

  The operation and action of the washing machine main body 10 configured as described above will be described.

  The control circuit 6 and the power supply circuit 17 rotate the gyro motor 15 having a gyro function to change the rotational speed of the rotating body 4. The rotational speed of the rotating body 4 is set to a rotational speed corresponding to the amount of laundry, for example. By doing so, unnecessary rotation can be avoided, and unnecessary vibration such as a resonance phenomenon of the rotating drum 2 can be appropriately avoided with the necessary rotation when necessary. Of course, the control circuit is not necessarily required as long as the configuration is linked to the washing amount.

  Further, if the vibration information detected by the vibration detecting means 5 provided on the outer periphery of the tank 1, that is, the output thereof is taken into the control circuit 6 and the rotational speed of the gyro motor 15 is determined according to the degree of vibration, the rotating drum Since the situation of the laundry 14 in 2 can be reflected in the gyro function at any time, vibrations can be suppressed at any time.

  The rotation control of the motor 3 is also performed, and the load current value of the motor 3 can be read. Since this value can be correlated with the amount of laundry, the rotation speed of the gyro motor 15 is adjusted according to this information. If the rotation is sufficiently increased prior to the rotation, the vibration can be suppressed before the amplitude of the rotary drum 2 increases.

  FIG. 3 shows an example in which the outer peripheral portion of the rotating body 18 having a gyro function is heavier than the center portion. By doing so, the performance of the gyro function is improved and the weight of the washing machine body 10 is reduced. Can be measured.

  As described above, the dehydrator or the washing machine according to the present invention can receive the abnormal rotation energy of the rotating drum by the gyro function part, so that the vibration energy is not transmitted to the dehydrator or the washing machine main body. Therefore, this technique can be applied as means for suppressing unnecessary vibrations in devices other than the dehydrator or the washing machine.

Schematic sectional view of the washing machine according to Embodiment 1 of the present invention. Schematic sectional view of a washing machine in Embodiment 2 of the present invention Sectional drawing of the principal part of the other stabilization means (rotary body) of the gyro function part of the washing machine Cross section of the main part of a conventional washing machine

Explanation of symbols

1 tank 2 rotating drum 3 motor 4 rotating body (stabilizing means)
5 Vibration detection means 6 Control circuit 7 Spring 8 Damper 14 Laundry 15 Gyro motor

Claims (5)

A dehydrator or a washing machine comprising a rotating drum rotatably disposed in a tub and a motor for driving the rotating drum, wherein a stabilizing means having a gyro function is disposed in the tub. The dehydrator or the washing machine according to claim 1, wherein the rotation speed of the stabilizing means is changed. 3. A dehydrator or a washing machine according to claim 2, wherein a vibration detection means for detecting the vibration of the tank is provided, and the rotational speed of the stabilization means is changed in accordance with the output of the vibration detection means. The dehydrator or the washing machine according to any one of claims 1 to 3, wherein the rotation of the stabilizing means precedes the rotation of the rotating drum. The dehydrator or the washing machine according to any one of claims 1 to 4, wherein the stabilizing means is formed of a rotating body, and an outer peripheral portion of the rotating body is formed to be heavier than a center portion.

Images