JPH04352995A - automatic washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic washing machine in which abnormal vibrations of a dehydrating tank due to unbalanced distribution of dehydrated materials are suppressed.

0002

[Prior Art] Conventionally, this type of automatic washing machine is shown in Figs. 6 and 7.
It had a structure as shown in. In the figure, 1 is an outer frame, 2 is an outer tank that encloses a dehydration tank to be described later, and 3 is a dehydration tank installed concentrically inside the outer tank 2. There are many dehydration holes 4 on the side, and the bottom Together with the stirring blade 5 in the center, it plays the role of washing and dewatering. 6 is a transmission, 7 is a motor, and these are fixed to the lower surface of the outer tank 2. Pulleys 8 and 9 transmit the rotation of the motor 7 to the transmission 6 via the V-belt 10. Further, the outer tank 2 is vibration-proofly supported from the upper part of the outer frame 1 via a hanging rod 14, a slider 16, a compression spring 17, and the like. 12 is a spherical seat, 13 is a stopper, 15
1 is an outer tank support part, and 18 is a spring seat.

The slider 16 includes a spherical part 16a that spherically slides on the outer tank support part 15, a cylindrical part 16b on which the hanging rod 14 slides, and a hook part 1 formed at the tip of the cylindrical part 16b.
6c, and is molded from synthetic resin such as nylon. The hook portion 16c of this slider 16 and the outer tank support portion 15
A slider presser 19 shaped like a leaf spring is interposed between the slider presser 19 and the slider presser 19, which is made of a material different from that of the outer tank support portion 15, such as nylon.

[0004] With this configuration, a substantially constant sliding friction force is applied in the horizontal direction regardless of the weight of the hanging portion, and the lateral vibration of the dewatering tank 3 caused by the unbalance of the material to be dehydrated during dewatering is reduced. there were.

[0005]

[Problems to be Solved by the Invention] However, with such a structure, since sliding frictional force is constantly acting, there is a problem that each component deteriorates severely and has poor durability. In addition, although it is effective in reducing lateral vibration when starting dewatering, during steady dehydration, the vibration of the outer tank 2 is easily transmitted to the outer frame 1 due to the sliding friction force, increasing the vibration of the outer frame 1 and causing noise. There were also issues that occurred.

[0006] The present invention solves the problems of the prior art, and its first object is to provide an automatic washing machine in which the durability of each part of the hanging part is improved while maintaining sliding frictional force.

[0007] The second object is to provide an automatic washing machine that reduces lateral vibration by increasing the sliding friction force only when starting dehydration, and further reduces the sliding friction force during normal operation to reduce vibration and noise. be.

A third object is to provide an automatic washing machine that can reduce both horizontal and vertical vibrations that occur when starting spin-drying, and can start smoothly.

[0009]

[Means for Solving the Problems] In order to achieve the above-mentioned first object, the automatic washing machine of the present invention has a dehydration tank provided with a stirring blade in the center of the bottom, and an outer tank surrounding the dehydration tank. , the outer tank has a suspension rod, a slider that slides spherically on the outer tank support, and an outer frame that supports the slider via an anti-vibration spring that biases the slider, and a bridge between the slider and the outer tank support. A slider magnet is provided on the slider, and a support magnet having a polarity different from that of the slider magnet is provided above the outer tank support portion.

[0010] In order to achieve the second object, the automatic washing machine of the present invention includes a support magnet composed of an electromagnet, and operates the support magnet only when starting spin-drying.

[0011] In order to achieve the third object, the automatic washing machine of the present invention comprises the support magnet as a cylindrical electromagnet,
The tip of the slider is formed into a conical shape with slits provided at several locations, the support magnet is inserted into the tip of the slider, and a compression spring is interposed between the support magnet and the upper surface of the outer tank support.

0012

[Function] With the above structure, the automatic washing machine of the present invention has the slider magnet provided at the joint between the outer tub and the slider and the support magnet provided at the outer tub support part with different polarities so that they attract each other. This suppresses sliding between the support portion and the slider, thereby making it possible to reduce lateral vibrations when starting dewatering.

Further, the automatic washing machine of the present invention uses an electromagnet as a supporting magnet, and operates only when starting dehydration to attract the slider magnet to reduce lateral vibration, and during normal operation, power to the electromagnet is stopped. The outer tank support part and slider are allowed to slide freely to reduce vibration transmission to the outer frame.

[0014] Furthermore, the automatic washing machine of the present invention, when starting dehydration,
The cylindrical electromagnet inserted into the conical part provided at the tip of the slider moves in the direction of reducing the diameter of the conical part by the attraction force, and the slits provided in several places deform and press the hanging rod. As a result, vertical movement of the slider along the suspension rod is suppressed, and longitudinal vibration of the outer tank is reduced. During normal operation, the power to the electromagnet is stopped, so the electromagnet moves upward by the compression spring, and the pressure on the slit is released, allowing the slider to freely slide along the hanging rod, transmitting vibration to the outer frame. becomes smaller.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the accompanying drawings. The automatic washing machine shown in FIGS. 1 and 2 includes a dehydration tank 26 provided with a stirring blade 24 at the center of the bottom, an outer tank 20 that encases the dehydration tank 26, and a hanging rod 30 that holds the outer tank 20.
It has a slider 31 that slides spherically on the outer tank support part 35, and an outer frame 28 that supports the slider 31 via an anti-vibration spring 32 that biases the slider 31 and the outer tank support part 35.
A slider magnet 34 is provided on the slider 31 between the two, and a support magnet 36 having a polarity different from that of the slider magnet 34 is provided above the outer tank support portion 35.

Note that a power transmission mechanism 2 is provided at the bottom of the outer tank 20.
1 is fixed, and this power transmission mechanism 21 is connected to the outer tank 20.
It is connected by a belt to a motor 22 fixed to the bottom of the machine. A stirring blade 24 is fixed to the stirring blade shaft 23 inside the power transmission mechanism 21, and a dehydration tank 26 is fixed to the shaft 25 outside. A fluid balancer 27 is provided above the dehydration tank 26. The outer tank 20 is elastically suspended and supported from the upper end of the outer frame 28 via a suspension 29. The suspension 29 is composed of a hanging rod 30, a slider 31, an anti-vibration spring 32, and a spring support plate 33. The slider magnet 34 is fixed on the slider 31 at the joint between the outer tank 20 and the suspension 29, and the support magnet 34
6 is fixed to the upper side of the outer tank support part 35.

With the above configuration, the outer tub 20 tends to vibrate horizontally when starting the dehydration due to the unbalance of the fabric that occurs after washing, but the slider magnet 34 and the support magnet 3
The suction action of 6 suppresses sliding between the outer tank support portion 35 and the slider 31, and reduces lateral vibration.

Next, a second embodiment will be explained based on FIG. 3. Since the overall configuration of the automatic washing machine is the same as that of the first embodiment, the same parts are given the same reference numerals and the explanation will be omitted. In the figure, 37 is a support magnet composed of an electromagnet;
Reference numeral 8 designates a control circuit that energizes the support magnet 37 for a certain period of time after the start of dehydration, and 39 designates a lead wire that connects the support magnet 37 and the control circuit 38.

With the above configuration, the outer tub 20 tends to vibrate horizontally when starting spin-drying due to the unbalance of the cloth that occurs after washing, but due to the attraction action of the slider magnet 34 and the support magnet 37, the outer tub support part 35 and Sliding of the slider 31 is suppressed, and lateral vibration is reduced. After a certain period of time has elapsed after starting the dehydration, the control circuit 38 stops energizing the support magnet 37. The attraction action between the slider magnet 34 and the support magnet 37 is eliminated, the outer tank support part 35 and the slider 31 can freely slide, and the vibration of the outer tank 20 is less likely to be transmitted to the outer frame 28. Vibration is reduced.

Next, a third embodiment will be explained based on FIGS. 4 and 5. Since the overall configuration of the automatic washing machine is the same as that of the first embodiment, the same parts are given the same reference numerals and the explanation will be omitted. In the figure, 40 is a support magnet composed of a cylindrical electromagnet, 41 is a compression spring that biases the support magnet 40,
31a is a conical portion formed at the tip of the slider 31, and slits 31b are provided at several locations to form a slit portion 31c. Other configurations are similar to the second embodiment.

With the above configuration, the outer tub 20 tends to vibrate horizontally when starting dehydration due to the unbalance of the fabric that occurs after washing, but the slider magnet 34 and the support magnet 40
Due to the suction action, sliding movement between the outer tank support portion 35 and the slider 31 is suppressed, and lateral vibration is reduced. At the same time, the support magnet 40 moves downward to reduce the diameter of the conical part 31a, and the slit part 31c deforms and presses the hanging rod 30, suppressing the sliding of the slider 31 along the hanging rod 30. longitudinal vibration is reduced. After starting the dehydration, the control circuit 38 stops energizing the support magnet 40 after a certain period of time has elapsed. The attraction between the slider magnet 34 and the support magnet 40 is eliminated, and the outer tank support portion 35 and the slider 31 can freely slide. On the other hand, the support magnet 40 is moved upward by the compression spring 41, and the pressure of the slit portion 31c on the hanging rod 30 is released, and the horizontal and vertical vibrations of the outer tank 20 are less likely to be transmitted to the outer frame 28. 28 vibrations are reduced.

[0022]

Effects of the Invention As described above, in the present invention, the slider magnet and the support magnet are made with different polarities so that they are attracted to each other, so that sliding of the outer tank support part and the slider is suppressed, and the dewatering It is possible to reduce lateral vibrations during startup, and at the same time, since no friction is used, the durability of each component is improved.

Further, the present invention uses an electromagnet as the support magnet, and operates it only when starting dehydration to attract the slider magnet, thereby reducing lateral vibration.During normal operation, the electromagnet is stopped energizing and the outer tank support section is moved. This allows the slider to slide freely, reduces vibration transmission to the outer frame, and reduces vibration noise during normal operation.

Furthermore, in the present invention, when starting dewatering, the cylindrical electromagnet inserted into the conical part provided at the tip of the slider moves in the direction of reducing the diameter of the conical part by attraction force.
By deforming the slits provided in several places and compressing the hanging rod, the slider is restrained from moving vertically along the hanging rod, reducing vertical vibration of the outer tank, and the electromagnet is energized during normal operation. is stopped, the electromagnet is moved upward by a compression spring, the pressure on the slit part is released, and the slider is allowed to freely slide along the suspension rod, thereby realizing a low-vibration and low-noise dewatering process. It is something that can be done.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an automatic washing machine according to a first embodiment of the present invention.

[Fig. 2] Cross-sectional view of main parts of the automatic washing machine in the first embodiment

FIG. 3 is a cross-sectional view of main parts of an automatic washing machine according to a second embodiment of the present invention.

FIG. 4 is a sectional view of main parts of an automatic washing machine according to a third embodiment of the present invention.

FIG. 5 is a perspective view of essential parts of an automatic washing machine according to a third embodiment of the present invention.

[Figure 6] Cross-sectional view of a conventional automatic washing machine

[Figure 7] Cross-sectional view of main parts of a conventional automatic washing machine

[Explanation of symbols]

20 Outer tank 24 Stirring blade 26 Dehydration tank 28 Outer frame 30 Hanging rod 31 Slider 31a Cone part 31b Slit 31c Slit part 32 Anti-vibration spring 34 Slider magnet 35 Outer tank support part 36, 37, 40 Support magnet 41 Compression spring

Claims (3)

[Claims] Claim 1: A dehydration tank provided with a stirring blade in the center of the bottom, an outer tank that encloses the dehydration tank, a slider that slides the outer tank on a spherical surface on a hanging rod and an outer tank support, and a slider that energizes the slider. a slider magnet is provided on the slider between the slider and the outer tank support part, and a slider magnet having a polarity different from that of the slider magnet is provided above the outer tank support part. Automatic washing machine equipped with supporting magnets. 2. The automatic washing machine according to claim 1, wherein the support magnet is constituted by an electromagnet and is operated only when starting dehydration. 3. The support magnet is constituted by a cylindrical electromagnet, a conical part formed in a conical shape is provided at the tip of the slider, and slits are formed in several places in the conical part to form the slit part,
3. The automatic washing machine according to claim 1, wherein the support magnet is inserted into a conical part, and a compression spring is interposed between the support magnet and the upper surface of the outer tub support part.