KR100548310B1 - Washing machine with clutch spring - Google Patents

Abstract

The present invention relates to a washing machine having a clutch spring, which enables the rotation of the inner tank and the pulsator to be controlled through the clutch spring, thereby reducing the cost and reducing the load of the driving motor as well as driving efficiency. It relates to a washing machine having a clutch spring that can improve.

To this end, the present invention, and the outer case forming the appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A pulsator installed relative to the inside of the inner tank to form a washing stream; A driving motor for generating a driving force for rotating the inner tank and the pulsator; An upper inner cylinder rotating shaft directly connected to the inner tank, a ring gear is formed on the inner circumferential surface, and includes a gear housing connected to the upper inner rotating shaft, and a lower inner rotating shaft connected to the gear housing, thereby supporting the driving force of the driving motor. Internal rotating shaft for transmitting to; A lower pulsator rotating shaft having one end connected to the driving motor and having a sun gear at the other end thereof, which is disposed concentrically with the inner inner shaft of the lower inner shaft, and meshes with the ring gear at the same time as the inner gear of the gear housing; A plurality of planetary gears which are installed to reduce the rotational speed of the lower inner rotary shaft, a carrier for rotatably and revolving the planetary gears in the gear housing, and concentrically in the upper inner rotary shaft. A pulsator rotating shaft configured to include an upper pulsator rotating shaft, one end of which is connected to the carrier and the other end of which is connected to the pulsator, to transfer the driving force of the driving motor to the pulsator; One end is fixed to the carrier and the other end is provided with a clutch spring characterized in that it comprises a clutch spring is fixed to the gear housing.

Washing machine, clutch spring, gear housing, carrier, clutch drum

Description

Washing machine with clutch spring {WASHING MACHINE WITH CLUTCH SPRING}

1 is a view showing the structure of a conventional washing machine

2 is a view illustrating main parts of FIG. 1;

3 is a view illustrating a structure of a washing machine having a clutch spring according to the present invention.

4 is a view illustrating main parts of FIG. 3;

5 to 6 is a view showing the operation structure of the washing machine having a clutch spring according to the present invention

<Description of the symbols for the main parts of the drawings>

110: outer case 111: outer tank

112: inner 113: pulsator

120: inner cylinder rotation shaft 130: pulsator rotation shaft

141,142: clutch drum 143: clutch spring

150: drive motor

The present invention relates to a washing machine, and more particularly, it is possible to control the rotation of the inner tank and the pulsator through the clutch spring, thereby reducing the cost and reducing the load of the driving motor as well as improving the driving efficiency. It relates to a washing machine having a clutch spring that can be made.

1 is a view showing the structure of a conventional washing machine, Figure 2 is a view showing a driving device of a conventional washing machine.

As shown, a conventional washing machine includes an outer case (10) forming an outer shape, an outer tank (11) suspended from the inside of the outer case (10) to accommodate washing water therein, and the outer tank (11). A washing and dehydrating combined inner tank 12 rotatably accommodated therein, and a pulsator 13 installed to rotate relative to the inner tank 12 inside the inner tub 12 to form a water flow. ), The inner tank rotating shaft 20 which is speeched to the inner tank 12 and rotates the inner tank 12, and is disposed concentrically with each other inside the inner tank rotating shaft 20, and is speeched to the pulsator 13 to pulsate. A pulsator rotating shaft 30 for rotating the eater 13, a clutch device 40 for controlling rotation of the inner tank rotating shaft 20 and the pulsator rotating shaft 30 during washing or dehydration, and the inner tank rotating shaft ( 20) and a drive motor 50 for generating a rotational force of the pulsator rotating shaft 30, There is sex.

The inner tank rotating shaft 20, the upper inner rotary shaft 21 is directly connected to the inner tank 12, the upper inner rotary shaft 21 is connected to the cylindrical gear housing 22, the ring gear 22a is formed on the lower inner peripheral surface And a lower inner rotary shaft 23 connected to the lower end of the gear housing 22 to transmit the rotational force of the driving motor 50 to the upper inner rotary shaft 21, and the upper inner rotary shaft 21 and the gear. The housing 22 and the lower inner rotating shaft 23 are coupled to each other by interference fit.

The pulsator rotating shaft 30 is disposed inside the upper inner tubular rotating shaft 21 and connected to the pulsator 13 and is located inside the gear housing 22 and the gear housing 22. A plurality of planetary gears 33 which mesh with the ring gear 22a on the inner circumferential surface of the 22 to reduce the rotational speed of the driving motor 50 and transmit the rotational force to the upper pulsator rotating shaft 31; The sun gear 32a for rotating the planetary gear 33 includes a lower pulsator rotating shaft 32 (hereinafter referred to as an input shaft) 32 formed thereon, wherein the drive motor is decelerated by the planetary gear 33. The rotational force of the 50 is transmitted to the upper pulsator rotating shaft 31 via the carrier 34.

The clutch device 40 includes a clutch member 41 mounted to be movable up and down along the axial direction of the input shaft 32, a clutch lever 42 for moving the clutch member 41, and a clutch lever 42. It is configured to include a clutch lever driving means (not shown) for driving.

The conventional washing machine having such a structure operates as follows.

First, in the washing stroke, after the water is supplied to the inside of the outer tub 10, the rotational force of the drive motor 50 is reduced through the input shaft 32, the planetary gear 33 and the ring gear 22a, and then the carrier 34 The pulsator 13 is transmitted to the pulsator rotating shaft 31, and the pulsator 13 is rotated forward and backward in the inner tank 12 to form a stream of water to wash and wash the laundry.

When the washing is completed, the drain pump (not shown) is driven to drain, and so-called intermittent dehydration for smoothly draining the wash water containing the laundry by rotating the inner tank 12.

At this time, when the inner tank is rotated for intermittent dewatering, as described above, the rotational force of the drive motor 50 is transmitted to the pulsator rotation shaft 31 and the rotational force of the drive motor 50 is transmitted by the clutch device 40. The inner tank rotating shaft 23 is integrally connected to the input shaft 32, and thus the inner tank rotating shaft 21 and the pulsator rotating shaft 31 are simultaneously rotated without being decelerated.

When the drainage is completed, the inner tank 12 is rotated while the water is supplied to the inside of the outer tank 11 so that the rinsing stroke is performed. After the rinsing and intermittent dehydration are repeated several times, the final washing operation is completed. .

In addition, in the dehydration operation, the rotational force of the driving motor 50 is transmitted to the pulsator rotating shaft 31 and the inner tank rotating shaft 21 by the clutch device 40 as in the intermittent dehydration described above. The inner tub 12 is rotated at the same time to dehydrate the laundry.

By the way, in such a conventional washing machine, when the washing or dehydration, the clutch device 40 for controlling the rotation of the inner tank rotating shaft 20 and the pulsator rotating shaft 30 is provided with an increase in the number of parts and assembly labor There was a problem that the rise and productivity is lowered.

In addition, the pulsator 13 is rotated forward and backward only by the torque of the driving motor 50 during the stirring and washing, thereby increasing the load of the driving motor 50 and lowering the driving efficiency.

Accordingly, the present invention has been made in order to solve the above problems, it is possible to reduce the cost, to reduce the load of the drive motor, as well as to provide a washing machine having a clutch spring that can improve the driving efficiency. Its purpose is to.

The present invention for achieving the above object, and an outer case forming an appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A pulsator installed relative to the inside of the inner tank to form a washing stream; A driving motor for generating a driving force for rotating the inner tank and the pulsator; An upper inner cylinder rotating shaft directly connected to the inner tank, a ring gear is formed on the inner circumferential surface, and includes a gear housing connected to the upper inner rotating shaft, and a lower inner rotating shaft connected to the gear housing, thereby supporting the driving force of the driving motor. Internal rotating shaft for transmitting to; A lower pulsator rotating shaft having one end connected to the driving motor and having a sun gear at the other end thereof, which is disposed concentrically with the inner inner shaft of the lower inner shaft, and meshes with the ring gear at the same time as the inner gear of the gear housing; A plurality of planetary gears which are installed to reduce the rotational speed of the lower inner rotary shaft, a carrier for rotatably and revolving the planetary gears in the gear housing, and concentrically in the upper inner rotary shaft. A pulsator rotating shaft configured to include an upper pulsator rotating shaft, one end of which is connected to the carrier and the other end of which is connected to the pulsator, to transfer the driving force of the driving motor to the pulsator; One end is fixed to the carrier and the other end is characterized in that it comprises a clutch spring fixed to the gear housing.

In addition, a first clutch drum is formed on an upper portion of the carrier, a second clutch drum is formed on an inner surface of the gear housing, and the clutch spring is selectively tightened on an outer circumferential surface of the first clutch drum and the second clutch drum. Characterized in that configured to be.

In addition, the second clutch drum is characterized in that it is formed to have a diameter corresponding to the first clutch drum.

In addition, the clutch spring is characterized in that it is formed to have an elastic rotational displacement greater than the stirring rotational displacement of the pulsator rotation shaft.

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

3 is a view illustrating a structure of a washing machine having a clutch spring according to the present invention, and FIG. 4 is a view illustrating main parts of FIG. 3.

5 to 6 are views illustrating an operation structure of a washing machine having a clutch spring according to the present invention.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted to clarify the gist of the present invention.

As shown in FIGS. 3 to 4, the washing machine provided with the clutch spring 143 according to the present invention is supported by the outer case 110 and the outer case 110 forming an outer shape, and washed inside. An outer tub 111 for receiving water, an inner tub 112 for washing and dehydration that is rotatably accommodated inside the outer tub 111, and a relatively rotatable inside the inner tub 112 are installed to be rotated. Receives a driving force of the pulsator (113), the driving motor 150 for generating a driving force for rotating the inner tank 112 and the pulsator 113, and the driving motor 150 to form a The inner tank rotating shaft 120 for rotating the inner tank 112, the pulsator rotating shaft 130 for rotating the pulsator 113 by receiving the driving force of the driving motor 150, and the inner tank 112 during washing or dehydration ) And a clutch spring 143 for controlling the rotation of the pulsator 113. W is composed.

The outer case 110 has a tubular shape that is upwardly open to allow laundry to enter and exit, and a cylindrical outer tub 111 that is upwardly opened by a support rod (not shown) is suspended and supported therein.

The inner tank 112 has a cylindrical shape that is upwardly open in the outer tub 111 and a plurality of dehydration holes (not shown) are formed on the circumferential surface and the bottom surface to be rotatable.

In the inner bottom region of the inner tank 112, a pulsator 113 is installed to be rotated relative to the inner tank 112 so as to form washing water therein.

The lower area of the inner tank 112 is provided with a driving motor 150 that is driven by receiving power, and the driving motor 150 is a stator (not shown) fixedly coupled to the lower area of the inner tank 112. And a rotor 151 for accommodating the stator therein and rotatably coupled forward and backward.

The inner tub rotating shaft 120 is a hollow cylindrical upper inner tub rotating shaft 121 directly connected to the inner tub 112, and the lower end portion of the upper inner tub rotating shaft 121 in a drum shape having a ring gear 122a is formed on the inner peripheral surface. It is configured to include a gear housing 122 connected to the lower, and the inner lower inner shaft rotation shaft 123 connected to the lower end of the gear housing 122, the upper inner rotation shaft 121 and the gear housing 122 and the lower The inner tank rotation shaft 123 is coupled to each other by interference fit.

The pulsator rotating shaft 130 is formed to have a diameter reduced in the radial direction of the lower inner tubular rotating shaft 123 and is disposed concentrically in the lower inner tubular rotating shaft 123 and the sun gear 132a is disposed at the upper end thereof. The lower pulsator rotating shaft 132 is integrally provided and connected to the driving motor 150, and the outer circumferential surface of the sun gear 132a is enclosed within the gear housing 122, and at the same time, the ring gear 122a is engaged. And a plurality of planetary gears 133 installed to engage with the plurality of planetary gears 133 to decelerate the rotational speed of the lower inner rotary shaft 123 at a predetermined ratio, and a carrier 134 for supporting the planetary gears 133 so as to rotate and revolve. The inner tank rotating shaft 121 is arranged concentrically with each other, the lower end is connected to the carrier 134 and the upper end is configured to include an upper pulsator rotating shaft 131 is connected to the pulsator 113.

In addition, the lower pulsator rotating shaft 132 is integrally coupled through a bushing (not shown) coupled to the rotor 151 of the drive motor 150, the inner tank rotating shaft 120 is the lower portion of the inner tank 112 It is rotatably supported by the upper and lower bearings 160a and 161a coupled to the upper and lower bearing housings 160 and 161 fixed to the area.

On the other hand, the inside of the gear housing 122 is provided with a clutch spring 143 to control the rotation of the inner tank 112 and the pulsator 113 during washing or dehydration, as described below.

The clutch spring 143 is disposed inside the gear housing One end is fixed to the carrier 134 and the other end is fixed to the gear housing 122.

To this end, a first spring fastening portion 126 of a predetermined size is formed on one side of the upper inner surface of the gear housing 122, and a second spring fastening portion 136 of a predetermined size is formed on one side of the upper end of the carrier 134. Is protruded, the one arm portion 143a of the clutch spring 143 is fixed to the gear housing 122 through the first spring fastening portion 126, the other arm portion 143b is the second spring fastening portion ( Secured to carrier 134 via 136.

In addition, a drum-shaped first clutch drum having a predetermined diameter is integrally formed on an upper portion of the carrier 134, and an upper inner surface of the gear housing 122 has a diameter corresponding to that of the first clutch drum 141. Since the hollow drum-shaped second clutch drum 142 is integrally formed, the clutch spring 143 may be selectively tightened to the outer circumferential surfaces of the first clutch drum 141 and the second clutch drum 142. have.

In addition, the upper pulsator rotating shaft 131 penetrates through the second clutch drum 142 and is integrally connected to the upper end of the carrier 134, and the clutch spring 143 is a stirring rotation displacement amount of the pulsator rotating shaft 130. It is formed to have a larger amount of elastic rotational displacement.

Hereinafter, the operation structure of the washing machine equipped with the clutch spring according to the present invention will be described with reference to FIGS. 5 to 6 as follows.

First, when power is applied to the driving motor 150 when the rotor 151 is rotated forward and backward in a certain range, when the lower pulsator rotation shaft 132 integrally coupled to the forward and reverse rotation, the lower pulsator rotation shaft 132 The sun gear 132a formed at the upper end of the front and rear rotation is rotated, and the sun gear 132a rotates the plurality of planetary gears 133 meshed therewith.

At this time, the inner tank rotation shaft 120 connected to the inner tank 112 is not rotated, each planetary gear 133 is rotated and revolved through the ring gear 122a formed on the inner circumferential surface of the gear housing 122 to support it The carrier 134 is caused to be rotated forward and backward while being decelerated at a constant reduction ratio.

As such, as the carrier 134 is rotated forward and backward in a decelerated state, the pulsator 113 is agitated and rotated through the upper pulsator rotating shaft 131 connected thereto so that the laundry inside the inner tank 112 is stirred and washed.

On the other hand, the clutch spring 143 provided inside the gear housing 122 is formed to have an elastic rotation displacement greater than the stirring rotation displacement of the pulsator rotation shaft 130, as shown in Figure 5, the pulsator When the forward and reverse rotation of the rotary shaft 130, the clutch spring 143 is contracted and tensioned at a predetermined interval apart from the outer peripheral surfaces of the first clutch drum 141 and the second clutch drum 142, and the pulsator rotation shaft 130 The inner rotation shaft 120 can be rotated relative to.

In addition, such a structure allows the driving torque required for the forward and reverse rotation of the pulsator rotating shaft 130 to be reduced by the reaction force generated during contraction and tension of the clutch spring 143.

On the contrary, when the pulsator rotation shaft 130 is rotated only in one direction in which the clutch spring 143 is contracted during dehydration, the clutch spring 143 is the first clutch drum 141 and the second clutch as shown in FIG. The outer peripheral surface of the drum 142 is tightened, whereby the pulsator rotating shaft 130 and the inner tank rotating shaft 120 are integrally rotated at the same speed by the tension of the clutch spring 143.

In such a situation, deceleration by the planetary gear 133 and the ring gear 122a is not performed.

As such, as the inner tank rotating shaft 120 and the pulsator rotating shaft 130 are integrally rotated without being decelerated, the inner tank 112 and the pulsator 113 are rotated and the laundry inside the inner tank 112 is dehydrated. .

Meanwhile, in the above-described and illustrated embodiments, the second clutch drum 142 is described as being integrally formed on the inner surface of the gear housing 122. However, the second clutch drum 142 of the upper inner rotating shaft 121 is described. Of course, it can be formed integrally with the lower end.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

As described above, according to the washing machine provided with the clutch spring according to the present invention, by eliminating the installation of the conventional clutch device and by allowing the rotation of the inner tank and the pulsator through the clutch spring, it is possible to reduce the cost, Not only can the load on the drive motor be reduced, but the driving efficiency can be improved, thereby improving the washing efficiency.

Claims (4)

An outer case forming an appearance; An outer tub supported inside the outer case to accommodate the wash water therein; A washing and dehydrating combined inner tub rotatably housed in the outer tub; A pulsator installed relative to the inside of the inner tank to form a washing stream; A driving motor for generating a driving force for rotating the inner tank and the pulsator; An upper inner cylinder rotating shaft directly connected to the inner tank, a ring gear is formed on the inner circumferential surface, and includes a gear housing connected to the upper inner rotating shaft, and a lower inner rotating shaft connected to the gear housing, thereby supporting the driving force of the driving motor. Internal rotating shaft for transmitting to; A lower pulsator rotating shaft having one end connected to the driving motor and having a sun gear at the other end thereof, which is disposed concentrically with the inner inner shaft of the lower inner shaft, and meshes with the ring gear at the same time as the inner gear of the gear housing; A plurality of planetary gears which are installed to reduce the rotational speed of the lower inner rotary shaft, a carrier for rotatably and revolving the planetary gears in the gear housing, and concentrically in the upper inner rotary shaft. A pulsator rotating shaft configured to include an upper pulsator rotating shaft, one end of which is connected to the carrier and the other end of which is connected to the pulsator, to transfer the driving force of the driving motor to the pulsator; Washing machine having a clutch spring, characterized in that it comprises a clutch spring, one end of which is fixed to the carrier and the other end of which is fixed to the gear housing. The method of claim 1, A first clutch drum is formed on an upper portion of the carrier, and a second clutch drum is formed on an inner surface of the gear housing so that the clutch spring can be selectively tightened on outer peripheral surfaces of the first clutch drum and the second clutch drum. Washing machine having a clutch spring, characterized in that configured. The method of claim 2, The second clutch drum has a clutch spring, characterized in that formed to have a diameter corresponding to the first clutch drum. The method of claim 1, The clutch spring is a washing machine having a clutch spring, characterized in that it is formed to have an elastic rotation displacement greater than the stirring rotation displacement of the pulsator rotation shaft.

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