KR19990042130A - washer - Google Patents

Abstract

The present invention relates to a washing machine, and an object thereof is to provide an installation structure of an unbalance detection device for easily detecting unbalance through a reed switch and a magnetic material.

The washing machine according to the present invention is on-off by the magnetic body 62 attached to the water tank 20 and its magnetic field as an apparatus 60 for detecting the unbalanced rotation of the washing tank 30 due to the imbalance of the laundry. It is composed of a reed switch 61 for transmitting a signal to the control unit 70, the magnetic material is coupled to the water tank rib 64 provided on the outside of the tank 20, the reed switch 61 is in the housing 10 The support rib 66 and the fixed rib 67 are provided. Therefore, the unbalance is sensed by the operation of the reed switch 61 by the vibration of the water tank 20. The installation of the reed switch 61 and the magnetic body 62 is easy, and the operation failure does not occur, so that the overall reliability of the washing machine is improved. There is an advantage to be improved.

Description

washer

The present invention relates to a washing machine, and more particularly, to an installation structure of an unbalance sensing device provided with a magnetic material and a reed switch to detect unbalance of a washing tank and control the operation of the washing machine.

In general, a washing machine is programmed to control the washing, rinsing, draining, and dehydration in advance to the microcomputer in the control unit, and the program can be selectively controlled by the user so that the laundry is automatically washed.

The washing machine having such a function is provided with a control unit at the upper part of the housing forming an exterior, and a water tank in which washing water is filled in the housing. The washing tank is rotatably configured in the inside of the water tank, and a pulsator is formed at the bottom thereof to receive the driving force of the motor and to rotate forward and backward to form the washing water flow.

Accordingly, the pulsator is rotated forward and reverse to perform the washing stroke, and after the washing stroke is completed, the washing tank rotates at a high speed to perform the dehydrating stroke.

On the other hand, the unbalance detection device for controlling the irregular movement of the washing tank and the water tank by the unbalance that can occur during dehydration due to the washing of the laundry is provided in the upper cover covering the upper portion of the housing.

In the conventional unbalance detecting apparatus, as illustrated in FIG. 1, the first contact portion 3a and the second contact portion 3b are disposed up and down inside the case 7 having the front, rear, and upper portions thereof opened, and the first The contact part fixing member 4 for fixing the contact part 3a and the second contact part 3b is coupled to the rear surface of the case 7.

Below the second contact portion 3b is provided with an operating table 2 for moving up and down in accordance with the opening and closing of the washing machine lid (not shown), one end of which is fixed to the contact portion fixing member 4 and the other end thereof. It extends a predetermined length toward the front of the case (7). In addition, the sensing lever 6 is provided to extend down the case 7 by hitting the water tank (not shown) by the irregular rotation of the washing tank (not shown). One end of the sensing lever 6 has a second exercise hole (2a) is formed so that the operating table (2) can be installed through, the lower end thereof is extended to a predetermined length and installed adjacent to the upper end of the tank (not shown) do. Reference numeral 5 is a spring for supporting the sensing lever 6 downward. In addition, between one end of the detection lever 6 and the case 7 to move up and down in accordance with the forward and backward movement of the detection lever 6 to convert the contact state of the first contact portion 3a and the second contact portion 3b. Contact converting means 1 is provided. The contact converting means 1 is inserted in the front of the second movement hole 2a, and the first conversion hole 7a is formed in the case 7 corresponding to the contact converting means 1, so that the contact converting means 1 Guide the up and down movement of the).

The operation of the unbalance sensing device configured as described above is as follows. First, when the user closes the lid (not shown) of the washing machine, the operating table 2 is pulled up by the lid, and the contact converting means 1 is moved by the lifting movement of the operating table 2 to the second contact portion 3b. Is contacted to the first contact portion 3a. In this state, if an unbalance occurs due to the bias of the laundry during dehydration, the upper end of the tank (not shown) pushes the detection lever 6 backward. Accordingly, the contact converting means 1 moves downward, and the second contact portion 3b is separated from the first contact portion 3a to stop the operation of the washing machine.

When the washing machine lid is opened, the second contact portion 3b and the first contact portion 3a are restored to their original state. Therefore, when such a situation occurs, the user opens the lid and evenly puts the laundry to be restarted to reduce the operating noise and do not overload the washing machine.

However, in the conventional unbalance detection device, the twist of the operating table 2 is generated due to the heavy load of the lid, and since the first and second contact parts 3a and 3b are exposed to the outside, foreign matter penetrates and malfunctions are caused. There is a possibility to occur. In particular, when hot water is used, burnout of the contacts due to steam is generated, and thus the safety of the contact parts 3a and 3b cannot be ensured, thereby reducing the overall reliability of the washing machine.

The present invention is to solve this problem, an object of the present invention is to provide a magnetic body on the outside of the tank, and in the inside of the housing provided with an unbalance detection device provided with a reed switch, the outside of the magnetic body is provided with a fixture to surround it And, the tank is provided with a tank rib to which the fixture is coupled, the housing is to provide a washing machine provided with a fixed rib and the support rib coupled to the reed switch.

1 is a side cross-sectional view showing a conventional unbalance detection device.

Figure 2 is a side cross-sectional view showing the overall structure of a washing machine to which the present invention is applied.

3 is an exploded perspective view showing the installation structure of the magnetic material according to the present invention.

Figure 4 is an exploded perspective view showing the installation structure of the reed switch according to the present invention.

5 is a control block diagram showing the electrical configuration of the control unit according to the present invention.

6 is a cross-sectional view showing a state before the magnetic material and the reed switch according to the present invention.

7 is a cross-sectional view showing a state after the magnetic material and the reed switch according to the present invention.

Explanation of symbols on the main parts of the drawings

10. Housing 20. Tank 30. Laundry

50. Driving part 60. Detection device 61. Reed switch

62. Magnetic material 63. Fixing fixture 64. Water tank rib

65. Switch case 66. Fixed rib 67. Support rib

70..Control part

In order to achieve the above object, the present invention provides a housing in which a wash water desalination tank is installed therein, and a washing tank rotatably provided in the water tank to wash and dehydrate the laundry to be dehydrated to detect unbalance of the washing tank. In the washing machine having a sensing device, the sensing device is a magnetic material coupled to the outside of the water tank by a magnetic material fixing means and the inside of the housing is spaced apart from the magnetic material at regular intervals and fixed by a switch fixing means due to the unbalance of the washing tank Reed switch is operated according to the proximity of the magnetic material is characterized in that it is provided.

On the other hand, the magnetic body fixing means is provided to surround the outside of the magnetic material is fixed to the locking jaw is provided on both sides and protruding to the outside of the water tank is characterized in that the tank rib provided with the locking jaw is inserted.

In addition, the switch fixing means is characterized in that the sliding openings provided on both sides of the reed switch and the fixing ribs installed in the housing so as to correspond to the sliding opening and the support ribs for supporting the lower portion of the reed switch.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Figure 2 is a side cross-sectional view showing the overall structure of the washing machine according to the present invention, Figure 3 is a perspective view showing the installation structure of the magnetic body according to the present invention. And Figure 4 is a perspective view showing the installation structure of the reed switch according to the invention, Figure 5 is a control block diagram showing the electrical configuration of the control unit according to the present invention, Figures 6 and 7 and the magnetic material according to the present invention It is sectional drawing before and after operation of reed switch.

As shown in FIG. 2, the washing machine according to the present invention is rotatably installed in the water tank 20 and the water tank 20 in which the washing water is filled in the housing 10 constituting the exterior body, and a plurality of dehydration holes are drilled in the wall surface. The washing tank 30 is comprised. The water tank 20 is suspended by the suspension device 21 in the housing 10, and the bottom of the washing tank 30 is provided with a pulsator 40 for forward and reverse rotation to form the water flow.

And the bottom of the housing 10 is provided with a driving unit 50 for driving the washing tank 30 and the pulsator 40, which is a motor generating the power 51 and its rotational force is transmitted through the belt pulsing It consists of a power transmission device 52 for simultaneously or selectively rotating the eater 40 and the washing tub 30. Reference numeral 11 is a lid of the washing machine.

On the other hand, there is provided a detection device 60 for controlling the operation of the washing machine by detecting the unbalance during the dehydration operation of the washing machine, which is a magnetic body fixed to the reed switch 61 and the tank 20 attached to the inside of the housing 10 ( 62). The magnetic body 62 is installed on the outside of the upper end of the water tank 30 by the magnetic body fixing means, and the reed switch 61 which is alternately driven by the magnetic field of the magnetic body 62 is fixed to be spaced apart from the magnetic body 62 at a predetermined interval. It is provided inside the housing 10 by means.

An installation structure of such a magnetic material will be described with reference to FIG. 3. As shown in the figure, the magnetic body 62 is provided in the shape of a standing cuboid, and a magnetic body fixing means for fixing the magnetic body 62 to the housing 10 is provided outside the magnetic body 62 and the outside of the water tank 20. . The magnetic body fixing means includes a fixture 63 provided on the outside of the magnetic body 62 and a tank rib 64 protruding outside the tank 20 so as to correspond to the fixture 63.

First, the fastener 63 is a magnetic case (63a) surrounding the front and both sides and the rear, left and right sides, and the bottom of the magnetic body 62 and the locking jaw (63b) protruding in both directions at approximately the middle of both sides, and the locking jaw ( It is provided with a plate-shaped fixing jaw (63c) extending in the vertical direction from the tip of the 63b), and the fixing groove (63d) provided on the upper and lower sides of the fixing jaw (63c).

And the water tank rib 64 is provided in the middle of the rib surface 64a and the rib surface 64a protruding outwardly extending in the vertical direction outside the water tank 20 into which the locking jaw 64b of the fixture 63 is inserted. The locking groove 64b and the fixing groove 64d provided to face the fixing groove 63d of the fixing device 63 are provided, and the locking jaw 63b is inserted into the locking groove 64b to fix the fixing groove of the fixing device 63 ( 63d) and the fixing groove 64d of the water tank rib 64 overlap each other and fasten it as a screw or at the same time use the adhesive on the contact surface of the fixture 63 and the water tank rib 64 to form the water body 62. To (20).

The installation structure of the reed switch will be described with reference to FIG. As shown here, the reed switch 61 is fixed to the inside of the housing 10 by the switch fixing means.

The switch fixing means is provided inside the switch case 65 and the housing 10 provided outside the reed switch 61 and is provided with a fixing rib 66 and a support rib 67. The switch case 65 is provided in a rectangular box, and a reed switch 61 is disposed inside the sliding case 65, and sliding holes 65a provided in up and down directions are provided on both rear surfaces of the switch case 65. On the upper side of the switch case 65, the terminal 61c of the reed switch 61 is drawn outward.

In the housing 10, a fixed rib 66 and a support rib 67 in which the switch case 65 is installed are integrally provided with the housing 10. The fixed ribs 66 are provided in pairs to protrude to the inside of the housing 10 and are bent to face each other so that the sliding holes 65a are inserted therein, and the lower support ribs 67 are fixed to the fixed ribs 66. It protrudes inwardly of the housing 10 so as to support the lower portion of the inserted switch case 65 upward.

On the other hand, the reed switch provided inside the switch case has a predetermined overlap and a predetermined gap on the pair of lead pieces 61a and 61b press-processed magnetic material as shown in FIGS. 6 and 7 together with the inert gas. Self-driven switch enclosed in a glass tube 61d, plated with precious metals such as platinum, gold, rhodium, and ruthenium to obtain excellent electrical contacts. In general, a mixture of nitrogen and hydrogen is used as an atmospheric inert gas. It is to be pressed in. The operation principle of the reed switch 61 is that when the reed switch 61 is placed on the magnetic field of the magnetic body 62, the lead pieces 61a and 61b of the soft ferromagnetic material are magnetized along the direction of the magnetic field, respectively. 61a and 61b have the north pole and the south pole, so that the other pole is induced to pull the contact portion together, and the contact is closed when the magnetic suction force exceeds the mechanical elastic force of the press working portion.

The unbalance detection device 60 configured as described above does not operate when the water tank 20 is normally positioned and the magnetic body 62 and the reed switch 61 are spaced at a predetermined interval. However, when the magnetic body 62 is close to each other due to the unbalance of the water tank 20, the positive pole and the negative pole are magnetized to each lead piece 61 and 62, and electrical attraction is generated. Attached. Accordingly, the reed switch 61 is turned on and input to the controller 70 to be described later as an electrical signal, and the driving of the motor 51 is controlled based on this. The configuration of the controller 70 will be described with reference to FIG. 5. Is as follows.

A reed switch 61 for inputting an on-off signal is electrically connected to the input side of the control unit 70 according to the proximity of the magnetic body 62. On the output side thereof, a motor driving unit 51a for driving the motor 51 is provided. Is connected.

That is, in general, the reed switch 61 maintains an off state (or on state), and when a sufficient magnetic field force formed in the magnetic body 62 is applied, as described above, the lead pieces are stuck together (or off). That is, when the laundry is debalanced during the dehydration administration, when the washing tank 30 rotates unbalanced, the washing tank 30 collides with the inner wall surface of the water tank 20, and a situation in which the magnetic body 62 attached thereto approaches the reed switch 61 is repeatedly generated. . At this time, when the magnetic body 62 is close to the reed switch 61, it is turned on by the magnetic field of the magnetic body 62, and transmits it to the control unit 70 as an electrical signal. When such a signal is input to the control unit 70 several times (typically two to three times), the motor driving unit 51a is controlled so that the motor 51 no longer operates.

Next, the operation of the washing machine according to the present invention configured as described above will be omitted since the general washing process is the same as in the related art. .

First, the laundry is placed eccentrically and the washing tank 30 is shifted from the center. When dehydration is performed in this state, the motor 51 is driven to rotate the washing tank 30. At this time, the unbalanced washing tank 30 hits the inner wall surface of the water tank 20 and vibrates it from side to side, so that the magnetic body 62 attached to the front end of the water tank 20 as shown in FIG. The case of proximity to the switch 61 occurs intermittently.

Accordingly, the reed switch 61, which is usually turned off, is turned on when the magnetic body 62 is in close proximity and is transmitted to the controller 70 as an electrical signal, and when the signal is input by the controller 70 about 2 to 3 times. By controlling the motor driver 51a so that the motor 51 is no longer driven, noise and damage due to unbalanced rotation are prevented.

Then, when the user opens the lid 11, the operation control of the control unit 70 is restored to its original state, and the dehydration operation is normally performed when the laundry is unevenly spread and then dehydrated again.

That is, the sensing device 60 for detecting the unbalance of the washing machine is attached to the upper end of the water tank 20 by the magnetic body fixing means to form a magnetic field in the magnetic body 62 and the magnetic body 62 to be spaced apart from the switch fixing means at a predetermined interval. It is installed by the reed switch 61 which is on-off and transmits an electrical signal to the controller 70 according to its proximity, and is easy to install and does not generate a malfunction due to burnout of the contact part. Can be used.

As described in detail above, the washing machine according to the present invention is stopped by the device for detecting the unbalanced rotation of the washing tank due to the imbalance of the laundry, the sensing device is turned on by the magnetic material attached to the water tank and its magnetic field The switch is composed of a reed switch which transmits an electrical signal to the control unit, and can be easily installed in the tank and the housing by the magnetic body fixing unit and the switch fixing unit.

In other words, the unbalance is detected by the reed switch is activated by the vibration of the tank, it is easy to install such a reed switch and the magnetic material, there is an advantage that the overall reliability of the washing machine is improved because there is no malfunction.

Claims (3)

In the washing machine having a housing in which a wash water fresh water tank is installed therein, a washing tank rotatably provided in the tank, in which the laundry is contained, washing and dehydration is performed, and a sensing device for detecting an unbalance of the washing tank. The sensing device is a magnetic material coupled to the outside of the water tank by a magnetic material fixing means and the inside of the housing is spaced apart from the magnetic material and fixed by a switch fixing means is operated according to the proximity of the magnetic material due to the unbalance of the washing tank Washing machine characterized in that the reed switch is provided. The method of claim 1, The magnetic body fixing means is provided to surround the outside of the magnetic body is provided with a locking jaw is provided on both sides and protruding to the outside of the water tank, washing machine characterized in that the locking rib is provided with a locking hole is inserted. The method of claim 1, The switch fixing means is a washing machine, characterized in that provided with a sliding opening provided on both sides of the reed switch and a fixing rib installed in the housing so as to correspond to the sliding opening and a support rib supporting the lower portion of the reed switch.