KR920004315B1 - Transmission apparatus for washing machine - Google Patents

Abstract

The apparatus selectively transmits a driving power to a washing-mode shaft or a dehydrating-mode shaft without using a costly clutch. The apparatus comprises the driving shaft (108) connected to a motor (107) shaft (107'), a washing connector (109) for transmitting the driving power to the washing-mode shaft (105), a dehydrating connector (110) for transmitting the driving power to the dehydrating-mode shaft (106), pulleys (114-118)/belts (119) for connecting the driving shaft (108) to the two connectors (109,110), means for moving the driving shaft up/down, and a support member (111) for supporting the rotation of the two connectors (109,110). The apparatus provides a simple structure.

Description

Power Division Transmission Device of Fully Automatic Washing Machine

1 is a partial longitudinal cross-sectional view of a fully automatic washing machine to which the power division transmission device according to the present invention is applied.

2 is an enlarged view illustrating main parts of FIG. 1.

3 is an enlarged cross-sectional view of the main portion of FIG.

4 is a longitudinal sectional view of a conventional fully automatic washing machine.

5 is a longitudinal sectional view showing an extract of a power transmission device of the conventional fully automatic washing machine.

6 is a longitudinal cross-sectional view of a conventional two-chamber washing machine.

* Explanation of symbols for main parts of the drawings

10: washing machine body 102: washing water tank

103: washing and dehydration tank 104: rotor blade

105: laundry shaft 106: de-shrink

107: motor 107 ': motor shaft

108: drive shaft 108a, 108b, 108c: protrusion

109: washing connector 109a: projection

110: dewatering connector 110a: projection

111: support 11a, 111b, 111c, 111d: support

112: motor connector 112a: protrusion

113: bearing 114, 115, 117, 118: pulley

116, 119: belt 120: solenoid

120 ': Plunger 121: lifting lever

123: return spring 124: fixed piece

125: Bearing

The present invention relates to a power transmission device for distinguishing, transmitting and driving a driving force during washing and dehydration of a fully automatic washing machine. Particularly, the present invention excludes an expensive clutch and replaces it with an inexpensive device so as to be suitable for a low cost automatic washing machine. It relates to a power class transmission device of a full automatic washing machine.

Conventionally, a washing machine includes a fully automatic washing machine (one tank washing machine) for washing and dewatering in one washing and dehydrating tank, and a two tank washing machine for washing and dewatering in a separate washing and dewatering tank.

As shown in FIG. 4 of one embodiment of a conventional fully automatic washing machine, a washing tank and a dewatering tank 3 having a plurality of dewatering holes 3a in the water tank 2 fixedly installed in the washing machine case 1. Rotating material and the inside of the dehydration tank (3), the washing rotor 4 is also installed as a rotating material, these dehydration tank (3) and the rotor blade (4) of the water tank (2), respectively The dehydration tank rotary shaft 6 and the rotor blade shaft 7 of the power split transmission device 5 settled at the center of the bottom surface are fixed to each other, and the gear shaft 8 is connected to the gear shaft 8 by the electric motor 10. Rotating driving force of the electric motor 10 which is rotated left or right according to the command of the automatic program built in the selector switch 13 is compressed by the rotary pulley 9 so as to be interlocked by the electric pulley 11 and the V belt 12. Even if the dehydration tank (3) and the rotor blade (4) is selectively rotated in a predetermined direction by being divided by the power division transmission device (5) It is configured. That is, during washing and rinsing, the dehydration tank 3 is stopped, and only the rotor blade 4 is rotated to the left and right to perform the washing process, and the dehydration tank 3 and the rotor blade 4 are dehydrated in one direction at the same speed. It is to rotate and perform the dehydration process.

In addition, as shown in FIG. 2, the power division transmission device 5 may form the dehydration tank rotating shaft 6 and the rotor blade shaft 7 in an inner and outer double shaft to form a lower end of the dehydration tank rotating shaft 6. The gear housing 14 is directly connected and fixed thereto, and the lower gear housing 14a incorporating the gear shaft 8 as a rotating material is coupled to the lower side of the upper gear housing 14, and fastened with a high information bolt 15. Thus, the upper and lower gear housings 14 and 14a are configured to be rotatable integrally, and the rotary blade 7 and the toothed shaft 8 which are observed inside the upper and lower gear housings 14 and 14a. The gears 16 and 17 are attached to the ends of the wheels, respectively, and the gears 16 and 17 are engaged with the gears 18 and 19 so as to be mutually decelerated.

In addition, a spring block 20 is installed on the gear shaft 8 between the lower end of the lower gear housing 14a and the rotary pulley 9, and the clutch spring 21 and the clutch boss 22 fit inside and outside on the outer circumference thereof. And the end portion 21a of the clutch spring 21 is fitted into the guide groove 22a, which is arranged on the inner circumferential wall of the clutch boss 22, and the end of the clutch spring 21 is rotated as the clutch boss 22 rotates. The position of (21a) can be displaced, and also the tooth 22b is formed in the outer peripheral surface of the clutch boss 22, and this tooth 22b is made according to the ON and OFF operation | movement of the valve actuation magnet 23 to this tooth 22b. The operating cap 25 of the actuated brake lever 24 can be engaged.

Looking at the operation state of the fully automatic electric washing machine having such a configuration, the water supply valve 26 is operated according to the automatic program of the selector switch 13 so that the water through the water supply port 28 of the water supply hose 27 (2) When supplied and filled with a certain amount of water, the pressure is operated by the pressure switch operation air tube 29 is linked to the automatic program of the selector switch 13 to automatically shut off the water supply and then to start washing, At this time, when the electric motor 10 rotates left, the rotary pulley 9 connected to the V valve 12 rotates left and accordingly, the clutch spring 21 is operated in a releasing direction, so that the clutch spring 21 and the spring block 20 are separated. Since the gap is formed so that the rotational force of the spring block 20 does not reach the clutch spring 21 and the lower gear housing 14a, the dehydration tank rotary shaft 6 connected to the gear housings 14 and 14a does not rotate, and the spring does not rotate. Power is transmitted only to the gear shaft 8 which is fixedly connected to the lock 20, so that only the rotor blades 7 connected to the gear shaft 8 through the gears 16, 17, 18 and 19 are rotated. do. Therefore, at this time, the dehydration tank 3 is stopped, and only the rotor blade 4 turns left to rotate the laundry in the washing tank and the dehydration tank 3 to the left.

In addition, when the motor 10 rotates right by stepping on a right turn signal based on an automatic program, the clutch spring 21 is operated in a winding direction so that the clutch spring 21 and the spring block 20 closely adhere to each other so that the rotational force of the spring block 20 is increased. The gear spring 14 is transmitted to the gear housing 14a via the clutch spring 21. However, at this time, the valve actuation magnet 23 is in the OFF state, so that the operation cap 25 of the brake lever 24 is engaged with the teeth 22b of the clutch boss 22, so that the teeth 22b are closed. Since it pushes by a certain amount, the end portion 21a of the clutch spring 21 engaged with the latching groove 22a of the clutch boss 22 is displaced, and thus the gap between the clutch spring 21 and the spring block 20 is removed. This is because the slip is formed so that the dehydration tank rotating shaft (6) is not rotated, but only the gear shaft (8) is to be turned right, so that only the rotor blade (4) is turned to the right.

Since the clutch mechanism used in the above-mentioned automatic washing machine is quite expensive, the price of the clutch mechanism occupies a very large proportion of 1 / 8-1 / 10 of the total cost, which is a great factor in raising the consumer price of the washing machine. There was a problem that the assembly process is complicated and requires a very complicated work during manufacturing, and it requires a large number of workers because it cannot be assembled automatically.

6 is a view showing a configuration of a conventional two-stage washing machine, and as shown therein, a washing tank 32 and a dehydration tank 33 are respectively formed inside the washing machine outer case 31, and a rotor blade (pulse) is formed in the washing tank 32, respectively. And a motor 35 for rotating the rotor blade 34 in the lower part of the washing tank 32 and a motor for rotating the dehydrating tank 33 in the lower part of the dehydrating tank 34. 36) is installed.

In the figure, 3 and 37 are pulleys, 38 are belts, 39 are operating panels, 40 and 41 are washing tank covers and dehydration tank covers, respectively.

Such a two-type washing machine washes by rotating the rotor blades 34 by the driving force of the motor 35 during washing, and when dewatering, by rotating the dehydration tank 33 by the driving force of the motor 36, the two-type washing machine The washing machine requires a washing drive unit provided with a motor 35 and a dewatering drive unit provided with a dewatering motor 36 independently, and have a problem in that a size becomes large. There is a disadvantageous problem.

The present invention was devised to solve the defects of the conventional fully automatic washing machine as described above, and the washing and dewatering tank and the rotor blade are selectively selected by a simple configuration that is easy to assemble without using the expensive clutch used in the related art. It is intended to be driven, it will be described in detail by the accompanying drawings an embodiment of the present invention as follows.

1 is a partial longitudinal cross-sectional view of a fully automatic washing machine provided with a power split transmission device according to the present invention, FIG. 2 is a split vertical cross section of the power split transmission device according to the present invention, and FIG. 3 is an enlarged sectional view of the main part of FIG. Denoted at 101 is a washing machine body, and 102 is a washing tank. And the washing and dehydration tank 103 is rotatably installed inside the washing tank 102, the rotor blade 104 is rotatably installed inside the washing and dehydration tank 103, the rotary blade 104 The rotating shaft (hereinafter referred to as a washing shaft) 105 of the) extends downwardly through the inside of the rotating shaft (hereinafter referred to as the dehydrating shaft) 106 of the washing and dehydrating tank 103.

In such a fully automatic washing machine, the driving force classification transmission device of the present invention is connected to the shaft 107 'of the motor 107 and rotates with the driving shaft 108, and the driving shaft 108 is selectively connected to the washing shaft 105 ) Is always connected to the laundry connector 109 for transmitting the power of the drive shaft 108 to the washing shaft 105, and optionally connected to the drive shaft 108, and always connected to the dehydration shaft 106 drive shaft 108 Dehydration connector 110 for transmitting the power of the power to the dehydration tank 106, and the drive shaft 108 by a predetermined length so that the drive shaft 8 is selectively connected to the laundry connector 109 and the laundry connector 110 Drive shaft lifting means for moving up and down, the support 111 for supporting the laundry connector 109 and the dehydration connector 110 to rotate at a predetermined position, and the motor even when the drive shaft 108 is moved up or down by a predetermined length Drive shaft 108 is coupled to shaft 107 ' It consists of a motor connector 112 for connection to rotate.

The support 111 has several supporting sections 111a, 111b, 111c, and 111d and is fixed to the inside of the washing machine body 101 by appropriate means.

The laundry connector 109 and the dewatering connector 110 are rotatably supported via the bearing 113 between the support sections 111a, 111b, and 111c of the support 11.

One example of the connecting means for selectively connecting the laundry connector 109 and the dewatering connector 110 to the drive shaft 108 is a plurality of protrusions 109a protruding from the inner circumferential surfaces of the laundry connector 109 and the dewatering connector 110. And a plurality of protrusions 108a and 108b protruding from the outer circumferential surface of the drive shaft 108 to engage with the 110a. Accordingly, the drive shaft 108 is connected to the dehydration connector 110 when the drive shaft 108 is raised by the lifting means, and is connected to the laundry connector 109 when the drive shaft 108 is lowered.

An example of a connecting means for connecting the laundry connector 109 and the dehydration connector 110 to the laundry shaft 105 and the dehydration shaft 106 is a pulley fixed to the laundry shaft 105 and the laundry connector 109, respectively. (114) 115 and belts 116 interposed between them, and also pulleys 117 and 118 fixed to the dewatering shaft 106 and the dewatering connector 110, and the belts interposed therebetween. It consists of 119.

One example of the elevating means for elevating the drive shaft 108 includes a solenoid 120, an elevating lever 121, and a return spring 122.

The solenoid 120 is fixed to the support interval 111d of the support 111, the lifting lever 121 is rotatably installed relative to the shaft pin (121 ') adjacent thereto, the solenoid 120 The one side connection portion 121 'of the plunger 120' and the lifting lever 121 is connected to the lifting lever 121 to rotate according to the movement of the plunger 120 ', and the lifting lever 121 The other side connecting portion 121 ′ and the upper connecting portion 108 ′ of the driving shaft 108 are connected through the bearing 125 so that the driving shaft 108 moves up and down as the lifting lever 121 rotates.

In addition, the return spring 122 is connected between the fixing piece 124 fixed to the bottom of the washing and dehydrating tank 103 and the connecting portion 121 'of the lifting lever 121.

The motor connector 112 connecting the drive shaft 108 and the motor shaft 107 'is fixed to an upper end of the motor shaft 107' and meshes with the inner and outer peripheral surfaces of the motor connector 112 and the drive shaft 108. The splined protrusions 112a and 108c are formed so that power is always connected even when the drive shaft 108 is raised or lowered.

In the drawing, 127 is a drain valve installed in the drain 126 formed in the lower part of the washing tank 102, and the solenoid 120 may use a solenoid that is conventionally used for driving the drain valve 127.

Referring to the effects of the present invention as described above are as follows.

When washing, since no power is applied to the valve actuation solenoid 120, the lifting lever 121 is pulled clockwise by the drive shaft 123 while being pulled clockwise by the return spring 123 to pull the drive shaft 108. Move down.

As such, when the driving shaft 108 descends, the protrusion 110a of the dewatering connector 110 and the protrusion 108b of the driving shaft 108 are separated from each other, and thus power is not transmitted to the dehydrating connector 110. 118 and the dehydration shaft 106 connected with the valve 119 do not rotate, and the washing and dewatering tank 103 is stopped. And the protrusion 108a of the laundry connector 108 and the protrusion 108a of the drive shaft 108 are connected so that the power of the motor 107 is transmitted to the drive shaft 108 and the laundry connector 108 connected thereto and the pulley ( The rotor blade 104 is rotated by rotating the washing shaft 105 connected to the 114 and 115 and the valve 116.

Here, if the radius of the pulley 114 is 1 / 6-1 / 8 of the radius of the pulley 115, the rotor blade 104 is washed while rotating at a low speed.

At the time of dehydration, power is applied to the solenoid 120 and the plunger 120 'is pulled so that the lifting lever 121 rotates counterclockwise to overcome the force of the return spring 123. Accordingly, the driving shaft 108 is raised. The protrusion 108a of the drive shaft 108 is separated from the protrusion 109a of the laundry connector 109, and the protrusion 108b of the drive shaft 108 is connected to the protrusion 110a of the dewatering connector 110. As the drive shaft 108 rotates due to the rotation of the 107, the dehydration connector 110 rotates, and the dehydration shaft 106 connected to the dewatering connector 110, the pulleys 117, 118, and the belt 119 rotates. The washing and dehydration tank 103 is rotated so that dehydration is performed.

If the radius of the pulley 117 is 1 / 3-1 of the radius of the pulley 118, the washing and dewatering tank 103 is dewatered while rotating at a high speed.

In this dehydration, no driving force is transmitted to the laundry shaft 105 connected to the rotary blade 104.

And when the laundry starts to rotate by the washing and dehydration tank 103, the friction force of the laundry and the washing water is acted to rotate the rotor blades 104, but when the washing and dehydration tank 103 rotates at high speed, the laundry is centrifugal force Due to being driven to the outside by the laundry and the rotor blade 104 is hardly contacted, the rotor blade 3 does not rotate and the amount of laundry is very large, the rotor blade 104 and the laundry contact the rotor blade 104 rotates Also, there is no damage to laundry or other mechanical problems, so it can be rotated.

Compared with the conventional apparatus of the present invention as described above, the configuration is simple, the manufacturing process is very simple, and the manufacturing cost is reduced by about 1/3 compared with the conventional apparatus.

Claims (4)

A driving shaft 108 connected to the shaft 107 ′ of the motor 107 to rotate, a washing connector 109 for transmitting the power of the driving shaft 108 to the washing shaft 105, and the driving shaft 108 of the driving shaft 108. A dehydration connector 110 for transmitting power to the dehydration shaft 106, a connecting means for connecting the drive shaft 108 to the motor shaft 107 ', and the washing connector 109 and the dehydration connector 110 are driven shaft (8) connecting means, the drive shaft lifting means for moving the drive shaft 108 up and down, and the laundry connector 109 and the dewatering connector 110 is the washing shaft 105 and the dewatering shaft 106 And connecting means to be connected to the support member 111 supporting the laundry connector 109 and the dewatering connector 110 to rotate at a predetermined position so that the driving force of the motor 107 at the time of washing or dehydration is driven by the driving shaft 108. In accordance with the lifting operation of the) is delivered to the washing shaft 105 or the dewatering shaft 106, the rotor blade 104 or washing and dewatering tank (1 03) the power transmission device of the automatic washing machine, characterized in that configured to rotate. The method of claim 1, wherein the connecting means for connecting the laundry connector 109 and the dewatering connector 110 and the drive shaft 108 is a plurality of protrusions protruding on the inner peripheral surface of the laundry connector 109 and the dewatering connector 110, respectively Motor connector 112, which is composed of a plurality of protrusions 108a, 108b protruding on the outer circumferential surface of the drive shaft 108 so as to mate therewith, and fixed to the shaft 107 'of the motor 107. And the connecting means for connecting the drive shaft 108 comprises a plurality of protrusions 112a and 108c formed to engage the inner and outer circumferential surfaces of the motor connector 112 and the drive shaft 108. Delivery device. According to claim 1, The elevating means for elevating the drive shaft 108 is a solenoid 120, the elevating lever 121 for elevating the drive shaft 108 in conjunction with the solenoid 120, and the elevating lever ( Power transmission device of the automatic washing machine, characterized in that consisting of a return spring (123) for returning movement 121. The method of claim 1, wherein the connecting means for connecting the laundry connector 109 and the dehydration connector 110 to the laundry shaft 105 and the dehydration shaft 106 is a pulley (114) 115, 117, 118 and Power transmission device of the automatic washing machine, characterized in that the belt (116) (119).

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