KR100247650B1 - Motor for washing machine - Google Patents

Abstract

The present invention relates to a motor for a direct type washing machine for generating a rotating power to drive the washing machine, in particular the main body case; A suspension tank installed inside the main body case; A rotating tank installed inside the tank; A rotary blade installed at the bottom of the rotary tub; A power transmission device for transmitting power to rotate the rotary blades and the rotary tub; Direct-type washing machine consisting of a rotor formed in a cylindrical shape having an upper surface and having a bottom and a side wall, a core installed in a circular shape on the inner side of the rotor, and a permanent magnet coupled to the inner side of the core. In a motor for; The rotor and the core and the permanent magnet is firmly fixed, the upper surface is closed and the lower surface is opened in the shape of an insertion groove is formed therein, the inner surface of both side walls are in contact with the rotor and the permanent magnet, respectively, A fixing member installed above the core and the permanent magnet; It relates to a direct-type washing machine motor for receiving the side wall of the fixing member and the jaw formed on the outer side of the upper end of the rotor so that the side wall of the fixing member does not protrude from the surface of the rotor, the upper side of the rotor, core and permanent magnet Since the fixing member is installed, the permanent magnet is prevented from being separated from the rotor by the centrifugal force by the driving force such as the forward and reverse rotation of the rotor, thereby ensuring a stable driving of the motor, and further increasing the quality of the product.

Description

Direct-type Washing Machine Motor

The present invention relates to a motor for a direct type washing machine that generates rotational power to drive a washing machine, and more particularly, to a combination of a permanent magnet, a rotor, and a core in a motor for a direct type washing machine, which makes the switching operation of the washing machine more simple. The present invention relates to a motor for a direct type washing machine that can be easily and firmly assembled to ensure the stability of operation.

In general, as shown in FIG. 1, the washing machine includes a water tank 10 for freshening wash water, a rotating tank 11 installed inside the water tank 10 to rotate at a high speed during a dehydration stroke, and the rotation. It is installed on the bottom of the tank (11) and the rotating wing 14 is rotated forward and reverse during the washing stroke, and transmits the power so that the rotary wing 14 is rotated, and the upper end penetrates the water tank (10) to the rotary wing (14) The washing shaft 13 is assembled to the end of the), and the hollow shaft to accommodate the washing shaft 13, the upper end is composed of a dehydration shaft 12 assembled with the rotating tank (11).

In addition, the laundry shaft 13 extends from the dehydration shaft 12 and protrudes, and a pulley 15 is fixed to the lower end of the laundry shaft 13.

In addition, the washing shaft 13 is separated up and down and the separated portion is connected via the planetary gear 21 to decelerate at a speed suitable for washing during the washing stroke to rotate the rotary blades (14).

The laundry shaft 13 and the dehydration shaft 12 are separated from the laundry shaft 13 and the dehydration shaft 12 during a washing stroke, and the washing shaft 13 and the dehydration shaft during a washing stroke. A clutch spring 16 is provided to engage the dehydration shaft 12, and a clutch lever 17 is assembled to the clutch spring 16.

In addition, a brake band 18 is provided on the outside of the dehydration shaft 12 for suppressing idle rotation of the rotating tub 11 during washing and braking during dehydration, and the brake band 18 is provided with a brake lever. 19).

In addition, the brake lever 19 and the clutch lever 17 are installed to work in conjunction.

In addition, the dewatering shaft 12 is provided with a one-way clutch bearing 20 so that the rotating tank 11 is not idle when washing.

Next, the operation of the conventional washing machine configured as described above will be described.

First, during the washing stroke, no external force acts on the clutch lever 17 and the brake lever 19 so that the dehydration shaft 12 and the washing shaft 13 are separated, and the brake band ( 18 is a state in which the dehydration shaft 12 is compressed to brake the dehydration shaft 12.

In this state, the rotational force of the motor (not shown) is transmitted to the pulley 15, and the power transmitted to the pulley 15 is transmitted to the lower portion of the washing shaft 13, and is transferred to the washing shaft 13. The power is decelerated in the planetary gear 21 and then transferred to the upper portion to rotate the rotary blades 14 so that water flow is generated by the rotary blades 14 to wash the laundry.

On the other hand, one of the rotary tub 11 is also rotated by the laundry rotated by the rotary blade 14 during the washing stroke as described above, the rotary tub 11 is a brake pressed on the dewatering shaft 12 Rotation is suppressed by the band 18 and the one-way clutch bearing 20.

In the dehydration operation, the brake lever 19 and the clutch lever 17 are pulled simultaneously, and when the brake lever 19 and the clutch lever 17 are pulled, the dehydration shaft 12 and the laundry are pulled out. The shaft 13 is coupled and at the same time the brake band 18 is spaced apart from the dehydration shaft 12.

In this state, the washing shaft 13 and the dewatering shaft 12 are rotated by the rotational power of the motor, and the rotating blade 14 is rotated by the washing shaft 13 and the dewatering shaft 12. ) And the rotary tub 11 is rotated at a high speed so that the centrifugal force is applied to the laundry so that the laundry is dehydrated.

As described above, the conventional washing machine has a problem that expensive components such as the planetary gear 21 and the one-way clutch bearing 20 are required, as well as the structure thereof is complicated and the operation accuracy is lowered and the operation is delayed. .

On the other hand, in order to improve the problems of the conventional washing machine, a direct type washing machine motor has been developed.

However, in the conventional direct-type washing machine motor, since the permanent magnet is bonded and coupled, the coupling state is not firm, so that the permanent magnet is separated from the coupling part, and thus the motor is damaged and the operating efficiency is lowered. there was.

The present invention has been made in view of the above-described problems, and an object of the present invention is to facilitate the coupling of a permanent magnet, a rotor, and a core in a motor for a direct type washing machine, which enables the switching operation of the washing machine to be performed more simply. The present invention also provides a motor for a direct type washing machine that can be reliably assembled to ensure stability of operation.

In order to achieve the above object, a direct type washing machine motor according to the present invention includes a main body case for forming an appearance of a washing machine; A suspension tank installed inside the main body case to receive wash water; A rotating tank installed inside the tank to rotate at a high speed during the dehydration stroke; A rotary blade installed at the bottom of the rotary tub and rotated forward and backward to generate water flow during the washing stroke; A power transmission device for transmitting power to rotate the rotary blades and the rotary tub; The rotor and the rotating tub to generate the rotational power to rotate, the upper surface is opened and formed in a cylindrical shape having a bottom and side walls, a core installed in a circular shape on the inner surface of the rotor, the inner surface of the core In the direct-type washing machine motor consisting of a direct-current motor having a permanent magnet coupled to; The rotor and the core and the permanent magnet is firmly fixed, the upper surface is closed and the lower surface is opened in the shape of an insertion groove is formed therein, the inner surface of both side walls are in contact with the rotor and the permanent magnet, respectively, A fixing member installed above the core and the permanent magnet; The side wall of the fixing member is accommodated so as not to protrude from the surface of the rotor, characterized in that the jaw formed on the outer side of the upper end of the rotor.

According to the motor for a direct type washing machine according to the present invention, since the fixing member is installed above the rotor, the core and the permanent magnet, the permanent magnet is prevented from being separated from the rotor by centrifugal force due to the driving force such as forward and reverse rotation of the rotor. Therefore, it is possible to secure stable driving of the motor and also double the quality of the product.

1 is a structural diagram schematically showing the internal structure of a general washing machine.

2 is a structural diagram schematically showing the internal structure of a washing machine equipped with a motor for a direct type washing machine applied to the present invention.

3 is a cross-sectional view showing the main part of the motor for a direct type washing machine applied to the present invention.

4 is an enlarged cross-sectional view showing an enlarged portion A of FIG.

Figure 5 is a perspective view showing a part of the fixing member applied to the present invention.

<Explanation of symbols for main parts of drawing>

50: DC motor 51: rotor

52: stator 53: core

54 permanent magnet 56 coil

57: housing 58: coil guide

59: fixing member 70: body case

71: rotating tank 72: water tank

73: power transmission device 74: rotary wing

75: dewatering 76: laundry shaft

77: rotating member 78: switching clutch

80: fixed plate

Hereinafter, an embodiment of a motor for a direct type washing machine applied to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic structural view showing the internal structure of a washing machine equipped with a motor for a direct type washing machine applied to the present invention, Figure 3 is a cross-sectional view showing the main part of the motor for a direct type washing machine applied to the present invention, FIG. 4 is an enlarged cross-sectional view illustrating an enlarged portion A of FIG. 3, and FIG. 5 is a perspective view showing a part of the fixing member applied to the present invention.

2 to 5, reference numeral 70 denotes a main body case for forming the appearance of the washing machine, and 72 denotes a water tank installed in a suspension of the main body case 70 to desalinate the wash water. It is provided in the interior of the water tank (72) is a rotary tank that rotates at a high speed during the dehydration stroke, 74 is a rotary blade installed in the bottom of the rotary tank (71) and reversely rotated so that water flow is generated during the washing stroke.

In addition, (73) is a power transmission device for transmitting power so that the rotary blade 74 and the rotary tub 71 is rotated, 50 is the rotary blade 74 and the rotary tub 71 is rotated. DC motor that generates rotational power as much as possible.

In addition, the power transmission device 73, the upper end portion is coupled to the rotary blade 74 through the water tank 72 so that the rotary power generated in the DC motor 50 is transmitted to the rotary blade 74. The washing shaft 76 and the hollow shaft to accommodate the washing shaft 76 and the upper end portion penetrates the water tank 72 so that the rotational power of the DC motor 50 is transmitted to the rotating tank 71. Dehydration shaft 75 coupled to the rotating tub 71, and when the dehydration to the dehydration shaft 75 so that the rotational power of the direct-current motor 50 is transferred to the washing shaft (76) Only when the power switching clutch 78 and the power switching clutch 78, the power switching clutch 78 and the power switching clutch 78 and the power switching clutch 78 is installed so as to be elevated on the outer circumferential surface of the dewatering shaft (75) so that the rotational power of the DC motor (50) is transmitted. Fixing plate 80 having an outer tooth to be engaged with the power switching clutch 78, and the fixing plate 80 When the power switching clutch 78 is engaged to be lowered comprises a rotary member 77 having the internal teeth is such that the power switching clutch 78 be engaged with the dewatering stroke when the rotary tub 71 rotates.

That is, during the washing stroke, the power switching clutch 78 is raised so that the power switching clutch 78 is engaged with the fixed plate 80 to suppress idling of the water tank 72 and the power of the DC motor 50. The laundry shaft 76 is rotated forward and reverse, and the laundry shaft 76 is rotated forward and reverse by the forward and reverse rotation of the laundry shaft 76, so that water flow is generated inside the rotary tub 71, thereby washing the laundry. It will be.

In addition, during the dehydration stroke, the power switching clutch 78 is lowered to be engaged with the rotating member 77. When the rotating member 77 and the power switching clutch 78 are engaged, the DC motor 50 is engaged. The washing shaft 76 and the dehydration shaft 75 is rotated at a high speed by the power of the power, the rotating tank 71 is rotated at a high speed by the rotation of the dehydration shaft 75 to dehydrate the laundry will be.

On the other hand, the DC motor 50, the upper surface is formed in a cylindrical shape having a bottom and side walls with an opening, the center of the rotor 51 coupled to the rotation shaft of the DC motor 50, and the rotor 51 of The core 53 is provided in a circular shape and is provided with a steel plate 53 and a permanent magnet 54 bonded to the inner surface of the core 53.

In addition, the DC motor 50 is provided with a stator 52 that causes electromagnetic induction with the rotor 51.

In addition, the coupling portion of the core 53 and the permanent magnet 54 is spaced apart at regular intervals to form an inner spaced out projection shown inwardly, and the permanent magnet 54 of a predetermined size in the spacer space not shown Inserted at regular intervals.

In addition, an upper surface of the rotor 51, the core 53, and the permanent magnet 54 is closed so that the rotor 51, the core 53, and the permanent magnet 54 are firmly fixed. And an insertion groove 59a formed therein in an annular shape with an open bottom surface, and fixing members 59 having inner surfaces of both side walls 59b and 59c contacting the rotor 51 and the permanent magnet 54, respectively. Is installed.

In addition, a jaw 60 is formed on the outside of the upper end of the rotor 51 to accommodate the side wall 59b of the fixing member 59 so that the fixing member 59 does not protrude from the surface of the rotor 51. It is.

On the other hand, the stator 52 is coupled to the housing 57 at regular intervals radially with respect to the permanent magnet 54, the coil 56 is wound in a vertical direction. In addition, a coil guide 58 for guiding the winding of the coil 56 is formed in an annular shape to the upper and lower sides of the stator 52.

According to the DC-type washing machine motor according to the present invention configured as described above, the core (53) formed in a circular shape in the rotor 51 is inserted and fixed, and between the spaced apart projections (not shown) of the core (53) The permanent magnet 54 is to be bonded.

On the other hand, the upper surface of the rotor 51, the core 53 and the permanent magnet 54 is provided with a circular-shaped fixing member 59 is closed, the lower surface is opened, the fixing member 59 The rotor 51, the core 53, and the permanent magnet 54 are all accommodated inside the receiving groove 59a, so that the rotor 51, the core 53, and the permanent magnet 54 are coupled to each other. The state is doubled to prevent the permanent magnet 54 from being separated from the rotor 51.

As described above, according to the motor for a direct type washing machine according to the present invention, since the fixing member is installed above the rotor, the core, and the permanent magnet, the permanent magnet is separated from the rotor by centrifugal force by driving force such as forward and reverse rotation of the rotor. This prevents the motor from being stable and ensures the stable driving of the motor, and also increases the quality of the product.

Claims (1)

A main body case 70 forming an exterior of the washing machine; A suspension tank 72 installed inside the main body case 70 to receive wash water; A rotating tank 71 installed inside the water tank 72 to rotate at a high speed during the dehydration stroke; A rotary blade 74 which is installed at the bottom of the rotary tub 71 and rotates forward and backward so that water flow is generated during the washing stroke; A power transmission device (73) for transmitting power to rotate the rotary blade (74) and the rotary tank (71); The rotor blades 74 and the rotating tub 71 to generate a rotational power to rotate, the upper surface is open and the rotor 51 formed in a cylindrical shape having a bottom and side walls, and the inner surface of the rotor 51 In the direct-type washing machine motor consisting of a core (53) installed in a circular shape on the DC motor (50) having a permanent magnet (54) coupled to the inner surface of the core (53); The rotor 51, the core 53, and the permanent magnet 54 are closed so that the upper surface is closed and the lower surface is open in an annular shape, and an insertion groove 59a is formed therein, and both side walls 59b ( A fixing member 59 provided on an upper surface of the rotor 51, the core 53, and the permanent magnet 54 by inner surfaces of 59c being in contact with the rotor 51 and the permanent magnet 54, respectively; The jaw 60 is formed outside the upper end of the rotor 51 to accommodate the side wall 59b of the fixing member 59 so that the side wall 59b of the fixing member 59 does not protrude from the surface of the rotor 51. Motor for a direct type washing machine, characterized in that consisting of.

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