KR0128530B1 - Double power conveyance apparatus of a two tub type washing machine - Google Patents

Abstract

A power transmitting device for a two-bin washing machine reducing the assembly time by integrating two motors into one. The device comprises a gear mechanism (26) and spinning motor (30) (but no washing motor) under a spinning bin (24) and a washing bin (22); a power transmission (28); a V belt (32) under a gear mechanism (26); a spinning bin (24) directly driven by the spinning motor (30); and a washing bin when necessary driven by the force transmitted through the spinning motor (30), three bevel gears (284,285,286), two cases (281,282), a pulley (292), the V belt (290), and the gear mechanism (26). A spinning brake (288) disconnects the 4th bevel gear (287) when spinning is not necessary, and the spinning brake (288) connects the 4th bevel gear (287) which drives the spinning bin (24) through the spinning motor (30), three bevel gears (284,285,286), and the shaft(296).

Description

[Name of invention]

Dual power train for two tank washing machine

[Brief Description of Drawings]

1 is a cross-sectional view of a conventional two-screw washing machine power transmission unit, showing an electric motor and a gear mechanism for supplying power to a washing tank and a dehydration tank.

2 is a cross-sectional view of a washing machine power transmission unit according to the present invention, showing an electric motor and a gear mechanism for supplying power to a washing tank and a dehydration tank.

3 is a detailed view showing the structure of the power transmission device according to the present invention shown in FIG.

* Explanation of symbols for main parts of the drawings

2,22: Washing tank 4,24: Dehydration tank

6,26: gear mechanism 8: washing motor

10: dewatering motor 12,32: V belt

28: power train 30: drive motor

281: first case 282: second case

283: 3rd case 284: 1st bevel gear

285: second gear bevel 286: third gear bevel

287: fourth gear bevel 288: dehydration brake

289: brake band 290: V belt

291 drum coupling 292 pulley

293: fixing bracket 294: ball bearing

295,296: axis 297: internal axis

298: protrusion

Detailed description of the invention

(Field of invention)

The present invention relates to a power transmission device of a two-chamber washing machine. More specifically, in a two-chamber washing machine in which washing and dehydration are performed in separate tanks using separate driving motors, dehydration and washing can be performed using one motor for each driving motor used. The present invention relates to a dual power train having a structure.

(Background of invention)

2. Description of the Related Art Conventionally, a two-chamber washing machine has been used for each tank, that is, a laundry tank for washing a laundry by generating a Haat water stream and a dehydration tank rotating at high speed in order to remove moisture from the laundry after washing. In order to drive a separate drive unit was used. The driving unit used for the washing tank transfers the rotational force by connecting the V-belt to the washing motor which rotates at a high speed, and transmits the power to the washing tank by using the gear mechanism. The transmitted power generally rotates the pulsator to generate Haat-like water flow. In addition, in order to receive power directly from the dehydration motor that rotates at high speed, the dehydration motor is coupled to the dehydration motor by using a coupling between the rotating shaft and the dehydration tank.

Shown in FIG. 1 is a schematic cross-sectional view of a conventional two-screw washing machine as described above. As shown, the two-seat washing machine is a washing tank (2) for storing two tanks, that is, the laundry and generating water flow in the water to remove the water from the laundry is completed in the washing tank (2) It is separated by a dehydration tank (4). In addition, a gear mechanism 6, a washing motor 8, and a dewatering motor 10 are respectively provided at the lower portions of the washing tank 2 and the dewatering tank 4. A V belt 12 is connected to the lower part of the washing motor 8, and the other end of the belt motor 12 is connected to the gear mechanism 6. Although not shown in detail, the rotational force of the washing motor 8 is double decelerated by the gear mechanism 6 and the belt 12 and transmitted to a pulsator (not shown).

Shown on the side of the washing motor 8 is a dewatering motor 10 for rotating the dewatering tank 4. The dehydration motor 10 is directly connected to the shaft and coupling of the dehydration tube, so that the rotational force of the dehydration motor 10 is directly transmitted.

The conventional two-screw washing machine configured as described above has a problem of increasing costs because separate driving motors must be used for the laundry driving unit and the dewatering driving unit, and the structure is complicated.

Moreover, in home appliances requiring high stability and reliability, the increase in the number of failures caused by the increase of parts has become one factor.

In order to solve the problems described above, the inventors of the present invention use the bevel gear to obtain two outputs from a single motor, and use the brake device that is selectively operated during washing and dehydration.

(Purpose of invention)

SUMMARY OF THE INVENTION An object of the present invention is to provide a power transmission device for a two-chamber washing machine that can drive each drive unit having a separate drive motor with one drive motor.

Another object of the present invention is to provide a power transmission device for a two-chamber washing machine, which can reduce the cost by reducing the number of drive motors used.

Still another object of the present invention is to provide a power transmission device for a washing machine that can reduce the number of components and thus reduce the time required for the assembly process.

(Summary of invention)

In order to achieve the above object, the power transmission device for a two-chamber washing machine according to the present invention is engaged with the first bevel gear 284 and the first bevel gear 284 and connected with the rotating shaft 295 of the driving motor. Second and third bevel gears 285 and 286 connected by an inner shaft 297, and are installed in a symmetrical direction with the first bevel gear 284 with respect to the inner shaft 297, and the second and third bevels. A fourth bevel gear 287 that rotates in engagement with the gears 285 and 286, a shaft 296 fixed to the fourth bevel gear 287, and the other end of which is connected to the dehydration container, and the fourth bevel gear 287. A first case 281 which surrounds a portion of the second and third bevel gears 285 and 286, the inner shaft 297 is fixed, and has a protrusion 298 facing upward, the first case 281 is in contact with the first case 281. And a second case 282 surrounding the first bevel gear 284 and portions of the second and third bevel gears 285 and 286. A third case 283 surrounding the first and second cases 281 and 282 and having a ball bearing 294 provided at an opening of the lower end thereof, a coupling 291 for connecting the shaft 296 to the dehydration container, and the coupling. A dehydration brake 288 installed at a lower portion of the 291, a band brake 289 connected to a lower portion of the dehydration brake 288 and surrounding an outer surface of the first case 281, and the first case. The washing machine pulley 292 coupled to the protrusion 298 of the 281, and the V-belt 290 coupled to the washing pulley 292, the washing pulley 292 is a washing tank directly It is characterized in that connected to the gear mechanism of.

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

(Explanation of specific example of invention)

The present invention is invented to change the structure of the power transmission device used in the two-chamber washing machine to use one drive motor in place of the two drive motors conventionally used. By doing so, the two-screw washing machine can reduce the load, simplify the assembly, and reduce the cost. Furthermore, there is an advantage in that the control microprocessor can be programmed to perform a washing stroke, such as a fully automatic washing machine. These characteristics will be made clear by the description of the embodiments, and other advantages will be disclosed.

2 is a schematic cross-sectional view of a washing machine equipped with a power transmission device for a two-chamber washing machine of the present invention. As shown, the two tank washing machine is provided with a washing tank (2) having a pulsator (not shown) installed at the bottom of the washing tank to store laundry and generate water flow in the water, and to perform washing in the washing tank (2). It is separated into a dehydration tank 4 which rotates at high speed to remove moisture from the finished laundry.

Unlike the related art, however, only the gear mechanism 26 and the dewatering motor 30 are installed at the lower portions of the washing tank 22 and the dehydrating tank 24, and the washing motor is not attached. In addition, the power transmission device 28 according to the present invention is attached to the upper portion of the dewatering motor 30. A V-belt 32 is connected to the lower portion of the gear mechanism 26, and the other end of the gear mechanism 26 is connected to the power transmission device 28.

That is, the rotational force of the dewatering motor 30 directly drives the dewatering tank 24 and is transmitted to the gear mechanism 26 through the belt 32 as necessary. In addition, although not shown in detail, the rotational force of the dehydration motor 30 is double decelerated by the gear mechanism 26 and the belt 32 to be transmitted to a pulsator (not shown).

The detailed structure of the power train 28 is shown in FIG. As shown, the power transmission device 28 is coupled to the first bevel gear 284 and the first bevel gear 284 which are connected to the rotating shaft 295 of the dehydration drive motor 30 of FIG. Second and third bevel gears 285 and 286 connected in engagement with each other and coaxially connected by the same inner shaft 297 and in a direction symmetrical with the first bevel gear 284 with respect to the inner shaft 297. A fourth bevel gear 287 which is installed and is engaged with the second and third bevel gears 285 and 286 and is fixed to the fourth bevel gear 287, and the shaft 296 having the other end connected to the dehydration container. The first case 281 surrounds portions of the fourth bevel gear 287 and the second and third bevel gears 285 and 286, and the inner shaft 297 is fixed and has a protrusion 298 toward the upper shaft. It is in contact with the first case (281) and surrounds the first bevel gear (284) and a portion of the second and third bevel gears (285, 286). And a third case 283 provided with a ball bearing 294 in the opening of the lower end, a coupling 291 for connecting the shaft 296 to the dehydration container, and a dehydration provided in the lower portion of the coupling 291. V is coupled to the brake 288, the lower portion of the dehydration brake 288 and coupled to the projection 298 of the first case 281, and V coupled to the washing machine pulley 292 It consists of a belt 290, the washing pulley 292 is directly connected to the gear mechanism of the washing tank (26 in FIG. 2).

The first bevel gear 284 is coupled to the shaft 295 extending from the dewatering motor, the second case 282 for supporting the first bevel gear 284 and a ball bearing 294 on the coupling portion. Connected to rotate. Second and third bevel gears 285 and 286 which are symmetrical with respect to each other and perpendicular to the first bevel gear 284 are connected to the first bevel gear 284. The second and third bevel gears 285 and 286 are fixed coaxially by an inner shaft 297. The inner shaft 297 penetrates each bevel gear and is fixed to the first case 281.

A fourth bevel gear 287 is also connected to the second and third bevel gears 285 and 286. The fourth bevel gear 287 is provided to be symmetrical about the first bevel gear 284 and the inner shaft 297. A shaft 296 is connected to the fourth bevel gear 287, and the shaft 296 is connected to the dehydrating container side through a coupling 291. The coupling 291 is formed integrally with the dehydration brake 288.

A brake band 289 is connected to an extended arm of the dehydration brake 288, and the brake band 289 is installed to surround a circumference of the first case 281. The dehydration brake 288 operates essentially the same as it was used in the conventional washing machine. When the dehydration brake 288 is operated by a control signal, the brake band 289 prevents rotation by applying pressure to the first case 281. The brake band 289 and the dehydration brake 288 are operated such that the dehydration brake is in a non-braking state when the brake band is braked and the dehydration brake is in a braking state when the brake band is not braking. The brake 288 may be automatically adjusted using manual operation or a synchronous motor.

A pulley 292 for a washing machine is connected to the protrusion 298 of the first case 281. The pulley 292 is for transmitting the power of the dehydration motor, the rotational force is generated as the first case 281 and the second case 282 rotates. The V-belt 290 for power transmission is fixed to the pulley 292. The V belt 290 is the same as the conventional one, and the other end of the V belt 290 is connected to the gear mechanism of the washing tub.

The third case 283 is disposed below the first case 281. The third case 283 is slightly spaced apart from the first and second cases 281 and 282, and is further provided with an additional ball bearing on the outer side of the ball bearing 294 installed at the lower end of the second case 282. 294-1) to be rotatable. A plurality of brackets 293 are attached to the side surfaces of the third case 283.

The bracket 293 is for fixing the dehydration motor, and the third case 283 is fixed to the dehydration motor so that the bracket 293 does not rotate in any case and maintains a stop state.

Referring to the operation and effects of the dual power transmission device for a two-chamber washing machine of the present invention having the structure as described above are as follows.

When the dehydration motor starts to rotate, rotational force is transmitted through the shaft 295. As the shaft 295 rotates, the first bevel gear 284 rotates accordingly. As the first bevel gear 284 rotates, the second and third bevel gears 285 and 286 connected thereto also begin to rotate. At this time, the brake band 289 rotates the first and second cases 281 and 282. That is, the bevel gears and the like located in each case rotates and the first and second cases 281 and 282 also rotate. At this time, the dehydration brake 288 connected to the dehydration container side is operated so that the fourth bevel gear 287 does not rotate.

As the first and second cases 281 and 282 rotate as described above, the pulley 292 fixed to the protrusion 298 on the upper side of the first case 281 rotates. Accordingly, the rotational force is transmitted to the washing tank through the V belt 290 connected to the pulley 292. The torque is transmitted directly to the gear mechanism and adjusted to the required speed by a suitable transmission.

When the dehydration brake 288 is in a non-braking state, that is, dehydration, the brake band 289 is in a braking state. Accordingly, the driving force of the dehydration motor is transmitted through the first bevel gear 284 and continuously transmitted to the second and third bevel gears 285 and 286. At this time, since the first and second cases 281 and 282 are stopped by the brake band 289, the first and second cases 281 and 282 cannot rotate. At the same time, since the fourth bevel gear 287 rotates, this rotational force rotates the shaft 296 on the side of the dehydration tube to perform the dehydration stroke. This torque is equal to the output of the dewatering motor.

As described above, according to the present invention, it is possible to reduce the number of driving motors used as a single body by separating the washing drive unit and the dewatering drive unit into two parts as well as to simplify the structure and save time for assembly. can do.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that the present invention may be changed within the spirit and scope of the present invention, and such modifications and changes should be limited by the appended claims. .

Claims (1)

In the power transmission system of the two-chamber washing machine, the first bevel gear (284) and the first bevel gear (284) connected to the rotating shaft (295) of the dehydration drive motor (30) is connected to rotate with each other. And second and third bevel gears 285 and 286 coaxially connected to each other by the same inner side 297, and are installed in a symmetrical direction with the first bevel gear 284 with respect to the inner shaft 297. A fourth bevel gear 287 that rotates in engagement with the second and third bevel gears 285 and 286, and is fixed to the fourth bevel gear 287 and surrounds a portion of the other end gears 285 and 286 and the inner shaft 297 is A first case 281 fixed and having a protrusion 298 facing the upper side, in contact with the first case 281 and having a first bevel gear 284 and second and third bevel gears 285 and 286; A second case 282 surrounding a portion of the first and second cases 281 and 282 and surrounding the lower portion A third case 283 provided with a ball bearing 294 in the opening, a coupling 291 for connecting the shaft 296 to the dehydration container, and a dehydration brake 288 provided below the coupling 291. ), And a band brake 289 connected to the lower portion of the dehydration brake 288 and surrounding the outer surface of the first case 281, and coupled to the protrusion 298 of the first case 281. The V-belt 290 coupled to the pulley 292 and the pulley 292 for the washing machine, and the V-belt 290 connected to the pulley 292 for the washing machine is directly connected to the gear mechanism of the washing tank. Dual power transmission device for a two-chamber washing machine characterized in that it is.