KR100271358B1 - Washing machine - Google Patents

Abstract

PURPOSE: A washing machine is provided to suppress an assembling defect and easily separate a fixing clutch member. CONSTITUTION: A washing machine contains a connecting shaft(41) having a shaft combining portion to be connected with a pulsator shaft(21) through an electromotor and combined with a driving shaft of a driving motor(15) and having a clutch combining portion; a fixing clutch member(63) having a shaft gearing portion to be combined with the clutch combining portion of the connecting shaft(41); and an actuating clutch member(67) geared with the fixing clutch member by falling. Thereby, an assembling defect by forcibly inserting the fixing clutch member into a driving motor shaft is prevented and the fixing clutch member is easily separated when a clutch and the driving motor are replaced.

Description

washer

The present invention relates to a washing machine, and more particularly, to prevent assembly failure caused by pressing a fixed clutch member into a driving motor shaft in a conventional washing machine, and to fix the clutch and the driving motor. It relates to a washing machine to facilitate the separation of the clutch member.

In general, a washing machine is a generally rectangular casing, an outer tub installed by a plurality of suspension devices in a casing, a spin basket rotatably installed in the outer tub to accommodate laundry, and a washing basket installed in the spin basket to generate laundry flow. To have a pulsator.

5 is an enlarged cross-sectional view of an outer tub surrounding area in a washing state of a conventional washing machine, and FIG. 6 is an enlarged cross-sectional view of an outer tub surrounding area in a dehydrated state of a conventional washing machine. As shown in these figures, a drive motor 115 is provided below the outtub 109. Between the outer tub 109 and the drive motor 115, the shaft assembly 117 for transmitting the driving force of the drive motor 115 to the pulsator 113 and the spin basket 111, and when washing and dewatering, The clutch device 119 which controls the direction in which the driving force of the motor 115 is transmitted is provided.

The shaft assembly 117 includes a pulsator shaft 121 for rotating the pulsator 113, a spin basket shaft 123 for rotating the spin basket 111, and rotation of the drive motor 115 when washing. It has a reduction gear device 125 which decelerates a speed and transmits it to the pulsator 113, the outer casing 127 surrounding these, and the brake device 149 which controls rotation of the spin basket 111. The outer casing 127 has an upper casing 131 and a lower casing 133.

The reduction gear device 125 includes a connecting shaft 141 coupled to the serration 173 so as to be integrally rotatable with the driving motor shaft 139, a sun gear 143 coupled to the connecting shaft 141, and a sun gear. A plurality of planetary gears 145 rotated in engagement with 143 and the connecting shaft 141 is concentric, and formed to surround the sun gear 143 and the planetary gear 145 to mesh with the planetary gears 145. It has a ring gear 147 and a carrier 146 coupled to the axis of the planetary gear 145 to transmit rotation of the planetary gear 145 to the pulsator shaft 121.

The brake device 149 is installed on the outer circumferential surface of the ring gear 147, and the upper region is installed on the cylindrical brake drum 151 coupled with the spin basket shaft 123, and the brake drum 151 is provided on the outer circumferential surface of the brake drum 151. A brake band 153 for controlling rotation of the 151 and a brake lever 155 coupled to one side of the brake band 153 to contact and detach the brake band 153 from the outer circumferential surface of the brake drum 151 are provided. .

The clutch device 119 is coupled to the lower region of the brake drum 151 to be coupled to the gear casing 164 provided to surround the connecting shaft 141, and the outer circumferential surface of the gear casing 164 and the spline 165 are coupled along the axis. It includes a slidable upper clutch 167, a clutch guide device 169 for guiding the shanghai movement of the upper clutch 167, and a lower clutch 163 that is pressed into the driving motor shaft 139 and integrally rotates.

With this configuration, when washing and rinsing, the brake band 153 contacts the outer circumferential surface of the brake drum 151 to restrain the rotation of the brake drum 151, and the upper clutch 167 has the lower clutch 163. Separated from. When the driving motor 115 rotates, the rotational force of the driving motor 115 is decelerated by the reduction gear device 125 and transmitted to the pulsator shaft 121. As the pulsator 113 rotates by the rotation of the pulsator shaft 121, a washing water flow is formed in the spin basket 111 to perform washing and rinsing.

When dehydration, the brake lever 155 is rotated so that the brake band 153 is separated from the outer circumferential surface of the brake drum 151 so that the rotation of the brake drum 151 is free and at the same time, the upper portion of the brake lever 155 rotates. The clutch 167 moves downward to engage the lower clutch 163. When the driving motor 115 rotates, the upper clutch 167 engaged with the lower clutch 163 rotates, so that the spin basket 111 rotates at the same speed as the driving motor 115 as the brake drum 151 rotates. . In addition, in the reduction gear device 125, the ring gear 147 also rotates by the rotation of the brake drum 151, so that the sun gear 143 and the ring gear 147 rotate in the same direction and at the same speed. 113 rotates at an undecelerated speed and dehydration takes place.

However, in such a conventional washing machine, as the fixed clutch member is pressed into the drive motor shaft, defects may occur during the assembling process, and the replacement operation is performed due to the fixed clutch member that is press-fitted when the clutch and the driving motor need to be replaced. There is an uncomfortable problem.

Therefore, an object of the present invention, as well as to suppress the assembly failure caused by pressing the fixed clutch member to the drive motor shaft in the conventional washing machine, and to easily remove the fixed clutch member when replacing the clutch and the drive motor. To provide a washing machine.

1 is a cross-sectional view of a typical washing machine,

2 is an enlarged cross-sectional view of a region around a shaft assembly in a washing state of a washing machine according to the present invention;

3 is an enlarged cross-sectional view of a region around the shaft assembly in the dehydrated state of FIG. 2;

4 is an assembled cross-sectional view of the lower clutch peripheral region of FIG.

Figure 5 is an enlarged cross-sectional view of the outer periphery area of the washing state of the conventional washing machine,

Figure 6 is an enlarged cross-sectional view of the peripheral area around the outer tub in the dehydrated state of the conventional washing machine.

* Explanation of symbols for the main parts of the drawings

9: outer tub 11: spin basket

13: pulsator 15: drive motor

17 shaft assembly 21 pulsator shaft

23: spin basket shaft 25: reduction gear device

41: connecting shaft 42: clutch coupling portion

43: sun gear 44: stop

45: planetary gear 47: ring gear

48: shaft grip 51: brake drum

53: brake band 55: brake lever

63: lower clutch 65: spline

66: stop ring 67: upper clutch

73: Serration

According to the present invention, there is provided a casing, an outer tub provided in the casing, and a driving motor provided in a lower region of the outer tub; A spin basket rotatably installed in the outer tub by a spin basket shaft to accommodate laundry, and a pulsator rotatably installed in the spin basket by a pulsator shaft concentric with the spin basket shaft to form a laundry stream In the washing machine having a, Coaxially aligned with the pulsator shaft is electrically coupled via a predetermined transmission mechanism, the shaft coupling portion coupled to the lower end portion rotatably coupled to the drive shaft of the drive motor, and the upper portion of the shaft coupling portion A connecting shaft having a clutch engaging portion provided in the region; A fixed clutch member having a shaft engagement portion coupled to the clutch engagement portion of the connection shaft so as to be integrally rotatable; It is achieved by a washing machine, characterized in that it comprises a movable clutch member which is integrally rotatable to the spin basket shaft and movable up and down along the axial direction to engage integrally rotatably with the fixed clutch member in the lowered state.

Here, it may be preferable that the clutch engaging portion and the shaft engaging portion have a non-circular cross-sectional shape to be engaged with each other in shape, the non-circular cross-sectional shape may be effective to be rectangular.

In addition, the connection shaft may preferably have a stop to limit the depth of engagement of the fixed clutch member, it may be preferable to further include a stop ring to prevent the downward departure of the fixed clutch member.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a general washing machine, Figure 2 is an enlarged cross-sectional view of the peripheral area around the shaft assembly in the washing state of the washing machine according to the present invention, Figure 3 is an enlarged cross-sectional view of the peripheral area around the shaft assembly in the dehydrated state of FIG. As shown in these figures, the washing machine has a substantially rectangular casing 1 and a top cover 3 in the upper region of the casing 1. The top cover 3 is provided with a door 5 for entering and exiting the laundry, and a water supply pipe 7 is installed at the rear of the door 5 to supply the washing water. Typically, the water supply pipe 7 is formed in pairs to supply hot water and cold water.

In the casing 1, an outer tub 9 fixed by a plurality of suspension devices 8 is provided. In the outer tub 9, a spin basket 11 for accommodating laundry is rotatably installed, and a pulsator 13 for forming a laundry stream in the spin basket 11 is installed below the spin basket 11. It is.

The drive motor 15 is fixedly installed in the lower region of the outtub 9. Between the outer tub 9 and the drive motor 15, a shaft assembly 17 for transmitting the driving force of the drive motor 15 to the pulsator 13 and the spin basket 11 is installed, the shaft assembly 17 The lower region is provided with a clutch device 19 for switching the driving force transmission direction of the drive motor 15 in accordance with washing and dehydration.

The shaft assembly 17 includes a pulsator shaft 21 coupled to the pulsator 13, a spin basket shaft 23 coupled to the spin basket 11 and formed to surround the pulsator shaft 21, and the laundry. And a reduction gear device 25 for reducing the rotational speed of the drive motor 15 to the pulsator shaft 21 when in the rinsing state, and an outer casing 27 formed to surround them. A plurality of oilless bearings 29 which support rotation of the pulsator shaft 21 are provided between the spin basket shaft 23 and the pulsator shaft 21.

The reduction gear device 25 is connected to the drive motor shaft 39 and the serration 73 and is connected to the connection shaft 41 which rotates integrally with the drive motor 15 and is installed in one region of the connection shaft 41. A sun gear 43 which rotates integrally with the shaft 41, a plurality of planetary gears 45 engaged with the sun gear 43 and turning around the sun gear 43, and the same axis as the connecting shaft 41; And a ring gear 47 formed to surround the sun gear 43 and the planetary gear 45 and engaged with the planetary gear 45 at an inner side thereof, and coupled to the axis of the planetary gear 45 to form the planetary gear 45. It has a carrier 46 for transmitting the rotational force of the pulsator shaft 21.

A brake device 49 is provided in the outer circumferential region of the reduction gear device 25. Brake device 49 is formed to surround the reduction gear device 25 is coupled to the outer surface of the ring gear 47, the brake drum 51, the upper region is coupled to the spin basket shaft 23, and the brake The brake band 53 is in contact with the outer circumferential surface of the drum 51 to control the rotation of the brake drum 51, and is coupled to one side of the brake band 53 to selectively attach the brake band 53 to the brake drum 51. It has a brake lever 55 for contacting and disengaging.

The brake lever 55 is provided with a brake lever shaft 57 for pivoting the brake lever 55, and the brake springs surround the brake lever shaft 57 so that the brake lever 55 can be returned from the pivot position. (59) is provided.

The clutch device 19 is coupled to the lower clutch 63 coupled to the lower end of the connecting shaft 41 and the lower region of the brake drum 51, and the gear casing 64 installed to surround the connecting shaft 41. The spline 65 is coupled to the outer circumferential surface and has an upper clutch 67 that can slide along the axial direction of the connecting shaft 41, and a clutch guide device 69 for guiding the sliding of the upper clutch 67. In the upper region of the upper clutch 67, a coil spring 71 for elastically supporting the upper clutch 67 in the axial direction is provided.

The outer casing 27 has an upper casing 31 and a lower casing 33. The upper casing 31 is provided with an upper bearing 35 to support the rotation of the brake drum 51, and the lower casing 33 has a lower bearing 37 to support the rotation of the gear casing 64. It is installed.

4 is an assembled cross-sectional view of the lower clutch peripheral region of FIG. 2. As shown in this figure, the clutch engaging portion 42 of the coupling shaft 41 and the interlocking portion 48 of the lower clutch 63 are formed in a quadrangular shape so as not to rotate relative to each other. . In the lower region of the lower clutch 63 installed on the connecting shaft 41, a stop ring 66 is provided to prevent downward movement of the lower clutch 63 along the axial direction of the connecting shaft 41. In addition, the stopping jaw 44 is formed on the connecting shaft 63 so as to limit the depth that the lower clutch 63 is inserted into the clutch engaging portion 42 of the connecting shaft 41.

According to the above configuration, when washing and rinsing, the brake band 53 is in contact with the outer circumferential surface of the brake drum 51 to restrain the rotation of the brake drum 51, and the upper clutch 67 has a lower clutch ( 63). When the drive motor 15 rotates, the rotational force is transmitted to the connection shaft 41 is coupled to the drive motor shaft 39 and the serration (73). When the connecting shaft 41 rotates, the ring gear 47 coupled with the brake drum 51 is constrained in the reduction gear device 25, so that the planetary gear is controlled by the gear ratio of the sun gear 43 and the ring gear 47. The rotation speed of the 45 is decelerated and transmitted to the carrier 46, and the pulsator shaft 21 coupled to the carrier 46 rotates to cause the pulsator 13 to cause washing water flow in the spin basket 11. So washing and rinsing are done.

At the time of dehydration, the brake lever 55 is rotated so that the brake band 53 is separated from the outer circumferential surface of the brake drum 51 so that the rotation of the brake drum 51 is freed and the upper portion of the brake guide device 69 is moved by the clutch guide device 69. The clutch 67 is guided downward to engage with the lower clutch 63. When the driving motor 15 rotates, as the lower clutch 63 rotates integrally and the upper clutch 67 engaged thereto rotates and the brake drum 51 rotates, the spin basket 11 rotates. In addition, as the connecting shaft 41 coupled to the driving motor shaft 39 and the serration 73 rotates integrally with the driving motor shaft 39, the lower clutch 63 also rotates, and the reduction gear device 25 is provided. As the brake drum 51 is free to rotate, the ring gear 47 is also rotatable. As a result, the sun gear 43 and the ring gear 47 do not decelerate as they rotate at the same speed. As the pulsator 13 and the spin basket 11 rotate in this way, the laundry in the spin basket 11 is dewatered.

As such, the shaft coupling portion is coaxially aligned with the pulsator shaft to be electrically connected through a predetermined power transmission mechanism, the shaft coupling portion integrally rotatably coupled to the driving shaft of the driving motor at the lower end, and the clutch coupling portion provided at the upper region of the shaft coupling portion. A fixed clutch member having a coupling shaft having a coupling shaft, a shaft clutch portion coupled to the clutch coupling portion of the coupling shaft so as to be integrally rotatable, and being rotatably integrated with the spin basket shaft and being capable of lifting and lowering along the axial direction. By providing a movable clutch member which is integrally rotatable with the clutch member, it is possible to suppress assembly failure caused by pressing the fixed clutch member into the drive motor shaft in a conventional washing machine and to replace the clutch and the drive motor. When the fixing clutch member is easy to remove.

As described above, according to the present invention, it is possible to suppress the assembly failure caused by pressing the lower clutch into the drive motor shaft in the conventional washing machine, and to separate the lower clutch when the clutch and the drive motor are replaced. One washing machine is provided for ease.

Claims (5)

A casing, an outer tub installed in the casing, and a driving motor disposed in a lower region of the outer tub; A spin basket rotatably installed in the outer tub by a spin basket shaft to accommodate laundry, and a pulsator rotatably installed in the spin basket by a pulsator shaft concentric with the spin basket shaft to form a laundry stream In the washing machine having a, A shaft coupling portion coaxially aligned with the pulsator shaft and electrically connected through a predetermined power transmission mechanism, the shaft coupling portion integrally rotatably coupled to the driving shaft of the driving motor at a lower end thereof, and the clutch coupling portion provided at an upper region of the shaft coupling portion. A connecting shaft having; A fixed clutch member having a shaft engagement portion coupled to the clutch engagement portion of the connection shaft so as to be integrally rotatable; And a movable clutch member which is integrally rotatable to the spin basket shaft and is movable to move up and down along the axial direction so as to be integrally rotatable with the fixed clutch member in the lowered state. The method of claim 1, And the clutch engaging portion and the shaft engaging portion have a non-circular cross-sectional shape for meshing with each other. The method of claim 2, The non-circular cross-sectional shape is a washing machine, characterized in that the square. The method of claim 1, The connecting shaft is a washing machine, characterized in that it has a stopper limiting the coupling depth of the fixed clutch member. The method of claim 4, wherein Washing machine characterized in that it further comprises a stop ring for preventing the downward departure of the fixing clutch member.