KR101349155B1 - Driving apparatus and top-loading type drum washing machine having the same - Google Patents

Abstract

The driving apparatus of the drum washing machine according to the present invention includes a support frame mounted on an open lower surface of a tub, a stator fixed to the support frame and to which power is applied, and a void disposed on an outer surface of the stator and mounted directly on a lower surface of the drum. The rotor can be configured to reduce the installation space inside the washing machine, increase the washing capacity in the washing machine of the same size, can significantly reduce the number of components can significantly reduce the manufacturing cost.

Description

Driving device for drum washing machine and top-loading drum washing machine having same {{DRIVING APPARATUS AND TOP-LOADING TYPE DRUM WASHING MACHINE HAVING THE SAME}

The present invention relates to a top-loading drum washing machine in which a door is installed on the upper side of the case, and more particularly, when the washing machine is stopped, the door position and the drum opening can be matched, and the initial position when assembling the rotor and the stator to the tub It relates to a driving device of a top loading type drum washing machine which can be fixed, and a top loading type drum washing machine having the same.

In general, the drum washing machine should be placed horizontally inside the case, the door to the laundry is placed in front of the washing machine case to open the door and bow the waist to draw the laundry into and out of the drum.

Such a front loading drum washing machine is inconvenient to use because the user needs to bow to put or remove laundry because the door is located in front of the case. When the user leans back, there is a need for a sufficient space to accommodate the user's body. That is, the front loading drum washing machine needs an extra space for accommodating the user's body in addition to the space for installing the washing machine.

In order to solve the above problems, a top loading drum washing machine has been developed. In the top-loading drum washing machine, an entrance for loading or taking out laundry is formed at the upper side of the case, so that the user does not need to bend the body excessively to add or remove the laundry, and to accommodate the user other than the space required for installing the washing machine. This is unnecessary.

1 is a cross-sectional view of a top loading drum washing machine according to the prior art.

Conventional top-loading type drum washing machine forms an appearance and a case 110 having an entrance 140 through which laundry enters and exits the front, and a door 100 hinged to the case 110 to open and close the entrance 140. And a tub 120 disposed inside the case 110 to receive the wash water, a drum 130 rotatably disposed inside the tub 120 to perform washing and dehydration, and the tub 120. It is mounted to the rear of the is connected to the drum 130 is composed of a drive device for driving the drum 130 rotation.

In addition, an opening 150 for inserting and removing laundry is formed on a side surface of the drum 130 having a cylindrical shape, and after matching the opening 150 of the drum 130 with the entrance 140 of the case 110, the laundry is drummed. 130 is inserted into the inside or the laundry inside the drum 130 is pulled out.

In addition, when the washing machine stops, sensing units 160 and 170 are provided to match the opening 150 of the drum 130 and the entrance 140 of the case.

The conventional sensing unit includes a first sensor 160 installed on the outer surface of the drum 130, and a second sensor 170 formed on the inner surface of the tub 120, the first sensor 160 and the second When the position of the sensor 170 is coincided with the opening 150 of the drum 130 and the entrance 140 of the case 110, the first sensor 160 and the second sensor 170 coincide with each other. The signal is applied to the washing machine control unit, and the washing machine control unit controls the driving device according to the signals applied to the sensing units 160 and 170 to position the opening 150 of the drum 130 and the door 140 of the door 140 of the case 110. Match.

However, the conventional sensing unit is inconvenient to install the sensor because the sensor must be installed on the drum and tub, there is a problem that accurate sensing is difficult when the sensor position is shifted due to vibration.

In addition, in the conventional top-loading drum washing machine, as disclosed in Korean Patent Publication No. 10-0795536 (January 10, 2008), when the drum rotates, a transmitter for transmitting a signal for checking the direction of the drum door is provided to the drum. One side of the tub is attached to the receiving unit which detects the signal of the transmitter only when the direction of the cabinet drum and the drum door is matched with each other as the drum is rotated.

The transmitter is mounted on one side of the outer peripheral surface of the drum, the receiver is mounted on the outer peripheral surface of the tub, when the direction of the cabinet drum and the drum door is mounted to the position where the signal generated from the transmitter magnet is detected.

However, the conventional top loading drum washing machine has a problem in that the assembly process is complicated because the transmitter and the transmitter of the drum and the tub are installed.

Patent Registration 10-0795536 (January 10, 2008)

Therefore, an object of the present invention is provided with a Hall IC for detecting the rotational position of the rotor to match the drum opening and the entrance of the case when the washing machine stops, and the sensor is installed in the drive device, so the sensor can be installed together when manufacturing the drive device. It is to provide a top-loading drum washing machine and a top-loading drum washing machine having the same, which is easy to install and accurate sensing.

Another object of the present invention is to determine the initial position of the rotor and the stator, and to fix the initial position when assembling the motor to the tub when the drive device of the top-loading drum washing machine that can be prevented from changing the position and having the same It is to provide a top-loading drum washing machine.

Still another object of the present invention is to provide a handle on the cover member when the motor is assembled to the rotor to hold the handle can be assembled to improve the assembly performance of the top loading type drum washing machine and the top loading type drum washing machine having the same To provide.

 It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

In order to achieve the above object, the driving apparatus of the drum washing machine of the present invention is a rotary shaft fixed to the lower surface of the drum and rotatably supported on the tub, a rotor support connected to the rotary shaft, and an inner rotor fixed to the rotor support and And a rotor having an outer rotor fixed to the rotor support at intervals from the inner rotor, a stator disposed between the inner rotor and the outer rotor, and the stator is integrally fixed and covers the rotor and is fastened to the tub. And a sensing unit installed between the cover member and the rotor to sense a position of the cover member and the drum and a rotational speed of the drum, wherein the sensing unit includes a positioning magnet fixed to an outer surface of the outer rotor, and the positioning unit. A position detecting hole IC disposed to face the magnet for fixing and fixed to the cover member, and a second hemp of the outer rotor Arranged to face the four and includes a fast-paced for resin Hall IC is fixed to the cover member.

Top-loading drum washing machine according to an embodiment is a case in which the entrance to the laundry is formed in the upper side, the tub is suspended in the case and the wash water flows in, the inside of the tub is rotatably disposed and laundry on the side And a driving device for driving the drum, wherein the driving device includes a rotating shaft fixed to a lower surface of the drum and rotatably supported by a tub, a rotor support connected to the rotating shaft, and the rotor. A rotor having an inner rotor fixed to the support, an outer rotor fixed to the rotor support at intervals from the inner rotor, a stator disposed between the inner rotor and the outer rotor, and the stator are integrally fixed and the rotor Cover the cover member is fastened to the tub and detects the position of the drum and the rotational speed of the drum And a sensing unit installed between the cover member and the rotor so that the sensing unit is positioned on the outer surface of the outer rotor and disposed to face the positioning magnet and fixed to the cover member. And a Hall IC and a speed sensing Hall IC disposed to face the second magnet of the outer rotor and fixed to the cover member.

As described above, the driving device of the top-loading drum washing machine of the present invention includes a hole IC for detecting the rotational position of the rotor in the cover member so that the drum opening and the entrance of the case can be matched when the washing machine is stopped by the hall IC. Make sure

As such, since the sensor is installed in the driving device, the sensor may be installed together when manufacturing the driving device, and thus, the installation is convenient and accurate sensing is possible.

In addition, by installing the position fixing member to the cover member to determine the initial position of the rotor and the stator, it is possible to fix the initial position can be prevented from changing the position of the rotor when assembling the motor to the tub.

In addition, the cover member is provided with a handle so that the handle can be assembled when the motor is assembled to the rotor, thereby improving assembly performance.

1 is a cross-sectional view of a top loading drum washing machine according to the prior art.
2 is a cross-sectional view of a top loading drum washing machine according to an embodiment of the present invention.
3 is a cross-sectional view of a driving apparatus of a top loading drum washing machine according to an embodiment of the present invention.
4 is an enlarged cross-sectional view of a part of a driving apparatus of a top loading drum washing machine according to an embodiment of the present invention.
5 is a plan view of a stator cover according to an embodiment of the present invention.
Figure 6 is a perspective view showing a position fixing unit for fixing the initial position of the rotor and the stator according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of such easy terms should be made based on the contents throughout the specification.

2 is a cross-sectional view of a top loading type drum washing machine according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a top loading type drum washing machine driving device according to an embodiment of the present invention.

2 and 3, the top loading type drum washing machine according to an embodiment of the present invention has an outer shape and has an entrance 12 through which laundry enters and exits a door 14 opening and closing the entrance 12. The case 10 is mounted, the tub 20 is installed inside the case 10 to accommodate the wash water, and the drum 22 is rotatably disposed in the tub 20 to perform washing and dehydration. And a driving device 30 mounted on the lower surface of the tub 20 to drive the drum 22.

The drum 22 is horizontally disposed and rotated inside the case 10 in a cylindrical shape, and an opening 24 is formed at a side thereof to allow laundry to enter and exit, and the laundry inside the drum 22 is protruded from the opening 24. A door 26 for preventing is provided.

In addition, a damper 28 is provided between the tub 20 and the case 10 to attenuate vibration and shock generated when the drum 22 is rotated.

As shown in FIG. 3, the driving device 30 includes a rotating shaft 32 fixed to the lower surface of the drum 22, a cover member 40 mounted on the lower surface of the tub 20, and a cover member 40. It includes a stator (50) integrally installed in the rotor and a rotor (60) connected to the rotating shaft (32) and having a predetermined gap with the stator (50).

The upper end of the rotating shaft 32 is fixed to the lower surface of the drum 22, the spline coupling portion 34 is formed on one side is splined to the rotor support 62 and rotated like the rotor support 62. The upper outer circumferential surface is rotatably supported by the tub 20 by the first bearing 36, and the lower outer circumferential surface is rotatably supported by the cover member 40 by the second bearing 38.

The cover member 40 is formed in a disc shape, and a ring-shaped stator 50 is integrally formed on an inner surface thereof and fastened to the lower surface of the rotor 20. That is, since the cover member 40 simultaneously performs the role of the stator support for supporting the stator 50 and the role of the motor housing, a separate motor housing is unnecessary, and accordingly, the thickness of the motor can be minimized and slimmed. A low noise structure suitable for the phosphorus type can be achieved.

The stator 50 includes a split type stator core 52 arranged at regular intervals in a circumferential direction on the cover member 40, an bobbin 56 made of an insulating material surrounding the stator core 52, and a bobbin 56. A coil 54 is wound around the outer circumferential surface.

The stator 50 has a coupling portion formed in the bobbin 56 and the bobbins adjacent to each other are adjacent to each other to form a ring shape, and a stator made of a ring shape is placed in a mold and then inserted into a mold to cover the stator 50 and the cover. The member 40 is integrally molded.

The rotors 60 and 70 are formed in a disc shape, and a rotor support (Involute Serration bushing 72) that is splined to the spline coupling portion 34 of the rotating shaft 32 is integrally formed at the center ( 62, an inner rotor 60 fixed to the rotor support 62 and disposed with a predetermined gap on the inner peripheral surface of the stator 50, and a constant gap fixed to the outer support surface of the stator 50, fixed to the rotor support 62; And an outer rotor 70 disposed to be disposed.

As shown in FIG. 4, the inner rotor 60 is mounted on an annular first back yoke 64 fixed to the rotor support 62 and on an outer circumferential surface of the first back yoke 64 and of the stator 50. The first magnet 66 is disposed to face each other with a predetermined gap therein.

The outer rotor 70 is fixed to the inner surface of the second back yoke 74 and the second back yoke 74 fixed to the rotor support 62, and faces the outer surface of the stator 50 with a predetermined gap. And a second magnet 76 disposed.

That is, the rotors 60 and 70 according to the embodiment are disposed on the outer circumferential surface and the inner circumferential surface of the stator 50, respectively, and a double rotor type that interacts with the stator 50 is applied.

Looking at the manufacturing process of the rotor (60, 70), the involute serration bushing (72) splined to the rotating shaft 32 is disposed in the center of the injection molding mold, the inner rotor (60) and the outer After the rotor 70 is disposed in the form of a ring at the edge of the mold, it is manufactured by insert molding with a thermosetting resin, for example, a BMC (Bulk Molding Compound).

Then, the rotor support 62, the inner rotor 60 and the outer rotor 70 are integrally formed.

The washing machine according to one embodiment is a top loading type drum washing machine. Therefore, when the washing machine stops, the entrance 12 formed in the case 10 and the opening 24 of the drum 22 must coincide with each other, so that the laundry can be withdrawn from the drum 22 or the laundry can be introduced into the drum 22. .

The cover member 40 and the rotor support 62 detect the rotational position of the drum 22 so that the position detecting unit to match the opening 12 of the drum 22 with the opening 12 of the case 10 when the washing machine stops. 80 is provided.

The position detecting unit 80 is fixed to the position detecting hole IC 84 and the rotor support 62 installed on the inner wall of the rotor insertion groove 82 in which the outer rotor 70 of the cover member 40 is disposed. And are disposed to face each other with the position detecting hole IC 84 and includes a positioning magnet 86.

Here, the position detecting hole IC 84 may be integrally formed in the cover member 40 by the insert molding method when the cover member 40 is manufactured. In addition, it is also possible to fix the position detecting hole IC 84 after the cover member 40 is manufactured.

Then, the positioning magnet 86 is disposed on the rear surface of the second back yoke 74 of the outer rotor 70, and is fixed together when the outer rotor 70 is fixed to the rotor support 62. In addition, since the positioning magnet 86 needs only to detect an electrode change of the magnet in the position detecting hole IC 84, the positioning magnet 86 is formed to be smaller than that of the second magnet 76 of the outer rotor 70.

In addition, the cover member 40 is provided with a speed detecting hole IC 88 for detecting the rotational speed of the drum 22 by detecting an electrode change of the second magnet 76 of the outer rotor 70. That is, the speed detecting hole IC 88 is fixed to the outer surface of the stator 50 at the position facing the second magnet 88 of the outer rotor 70.

The cover member 40 is fixed with a printed circuit board 90 to which the position detecting hole IC 84 and the speed detecting hole IC 88 are electrically connected, and the printed circuit board 90 has a connector on one side thereof. 92) is mounted and electrically connected to the washing machine control unit.

Looking at the action of such a position detection unit 80, when the rotor (60, 70) is rotated, the second magnet 76 of the outer rotor 70 is rotated, the second magnet 76 is disposed facing each other Speed detection Hall IC 88 senses the electrode change of the second magnet 76 and applies the signal to the printed circuit board 90, the printed circuit board 90 transmits the drum speed signal to the washing machine control unit And, the washing machine control unit controls the drum rotational speed of the washing machine in accordance with the signal applied from the speed detection hall IC (88).

When the position detecting hole IC 84 senses the electrode change of the positioning magnet 86 and transmits a signal for the position of the drum 22 to the washing machine control unit through the printed circuit board 90, the washing machine is controlled. The unit judges the position of the drum 22 according to a signal applied from the position detecting hall IC 84, and when the washing machine is stopped, the entrance 12 of the case 10 and the opening 24 of the drum 22 are closed. To be consistent.

5 and 6, the cover member 40 is formed in a disc shape, the outer edge of the plurality of bolts 44 for fastening to the lower surface of the tub 20 at regular intervals in the circumferential direction A bolt fastening hole 42 is formed, and a bearing mounting portion 46 in which a second bearing 38 for rotatably supporting the lower end of the rotation shaft 32 is formed at a central side thereof, and a stator 50 is formed at an inner circumferential surface thereof. Is fixed to the stator fixing part 48 is formed.

The cover member 40 is disposed at the outermost side of the motor and is fastened to the bottom surface of the tub 20 by a bolt 44 to serve as a motor housing to surround the motor and a stator support to which the stator 50 is fixed.

The cover member 40 is provided with a fixing clamp 96 for aligning the initial positions of the rotors 60 and 70 and the stator 50 when the motor is assembled to the washing machine. That is, the cover member 40 is formed with an arc-shaped slot 94 so that the rotor support 62 can be exposed to the outside, and the clamp 96 for fixing to the rotor support 62 through the slot 94. When it is fastened, the initial positions of the rotors 60 and 70 and the stator 50 are fixed.

Thus, since the initial positions of the rotors 60 and 70 and the stator 50 are aligned by the fixing clamp 96, the assembly of the motors in the washing machine is prevented from shifting the initial positions of the rotors 60 and 70 and the assembly is performed. It can be done easily and conveniently.

After the motor is assembled into the washing machine, the fixing clamp 96 may be separated from the cover member 40.

In addition, a pair of handles 98 are formed on the outer surface of the cover member 40 at intervals of 180 degrees so that the cover member 40 can be assembled by holding the handle 98 by hand when assembling the cover member 40 to the tub 20. The assembly can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: case 12: doorway
14: door 20: tub
22: drum 24: opening
26: door 30: drive unit
32: rotating shaft 40: cover member
50: stator 60: inner rotor
70: outer rotor 80: position sensing unit
82: rotor insertion groove 84: hole detection hole IC
86: positioning magnet 88: speed sensing hall IC
90: printed circuit board 96: fixing clamp
98: handle

Claims (12)

A rotating shaft fixed to the lower surface of the drum and rotatably supported by the tub;
A rotor comprising a rotor support connected to the rotation shaft, an inner rotor fixed to the rotor support and having a first magnet, and an outer rotor fixed to the rotor support at intervals from the inner rotor and having a second magnet;
A stator disposed between the inner rotor and the outer rotor; And
A cover member in which the stator is integrally fixed and covers the rotor and is fastened to the tub; And
And a sensing unit installed between the cover member and the rotor to sense the position of the drum and the rotational speed of the drum,
The sensing unit includes a positioning magnet fixed to an outer surface of the outer rotor, a positioning sensing hole IC facing the positioning magnet and fixed to the cover member, and a second magnet of the outer rotor. And a speed detecting hall IC fixed to the cover member. The method of claim 1,
The cover member is formed in a disk shape that can cover the rotor, a bearing mounting portion for mounting a bearing for supporting the rotating shaft is formed in the center, a bolt fastening hole is bolted to the bottom surface of the tub in the circumferential direction ,
Driving device of the drum washing machine, characterized in that formed integrally with the stator and the insert molding method. The method of claim 1,
The positioning magnet is fixed to the back yoke of the outer rotor and the driving device of the drum washing machine, characterized in that having a smaller size than the second magnet. The method of claim 1,
The cover member is fixed to the printed circuit board that is electrically connected to the speed detection hole IC, the position detection hole IC, the printed circuit board is equipped with a connector electrically connected to the main body of the washing machine Drive system. The method of claim 1,
The cover member is formed with a slot for exposing the rotor to the outside, the driving device of the drum washing machine, characterized in that the fixing clamp for fixing the initial assembly position of the rotor and the stator is detachably mounted to the slot. . The method of claim 1,
The outer circumferential surface of the cover member is a drive device for a drum washing machine, characterized in that the handle is formed so as to hold by hand when assembling the cover member to the tub. A case in which an entrance through which laundry enters and exits is formed on the upper side, a tub in which the suspension is suspended and the washing water flows in the case, a drum rotatably disposed in the tub and an opening through which laundry enters and exits, and the drum; It includes a drive device for driving,
The drive device includes a rotating shaft fixed to the lower surface of the drum and rotatably supported by the tub;
A rotor having a rotor support connected to the rotation shaft, an inner rotor fixed to the rotor support and having a first magnet, and an outer rotor fixed to the rotor support at intervals from the inner rotor and having a second magnet;
A stator disposed between the inner rotor and the outer rotor; And
A cover member in which the stator is integrally fixed and covers the rotor and is fastened to the tub; And
And a sensing unit installed between the cover member and the rotor to sense the position of the drum and the rotational speed of the drum,
The sensing unit includes a positioning magnet fixed to an outer surface of the outer rotor, a positioning sensing hole IC facing the positioning magnet and fixed to the cover member, and a second magnet of the outer rotor. And a speed-loading hall IC fixed to the cover member. The method of claim 7, wherein
The cover member is formed in a disk shape that can cover the rotor, a bearing mounting portion for mounting a bearing for supporting the rotating shaft is formed in the center, a bolt fastening hole is bolted to the bottom surface of the tub in the circumferential direction ,
Top-loading drum washing machine, characterized in that the stator is formed integrally with the insert molding method. The method of claim 7, wherein
The positioning magnet is fixed to the back of the second back yoke of the outer rotor and the top-loading drum washing machine, characterized in that having a smaller size than the second magnet. The method of claim 7, wherein
The cover member is fixed to a printed circuit board to which the speed sensing hole IC and the position sensing hole IC are electrically connected, and the printed circuit board is equipped with a connector electrically connected to the main body of the washing machine. Drum washing machine. The method of claim 7, wherein
The cover member is provided with a slot for exposing the rotor to the outside, the top loading type drum washing machine, characterized in that the fixing clamp for fixing the initial assembly position of the rotor and the stator is detachably mounted to the slot. . The method of claim 7, wherein
Top loading drum washing machine, characterized in that the handle is formed on the outer circumferential surface of the cover member to hold by hand when assembling the cover member to the tub.

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