CN101082160B - The Water Seal Structure of the Swing Device of the Wave Wheel Swing Washing Machine - Google Patents

Abstract

The invention relates to a water seal structure of a swing device of a pulsator swing type washing machine. The pulsator swing type washing machine includes an inner tub, a pulsator, a dehydration shaft connected to the inner tub, a pulsator shaft connected to the pulsator, and a pulsator shaft connected to the pulsator. In the washing process, the oscillating device is used to make the pulsator oscillate, the top of the oscillating device is provided with a pendulum member connected to the pulsator, and an impeller is provided on the dehydration shaft below the pulsator, wherein: the pendulum member and the passive part A sealing sleeve is provided between the outer circumference of the lower end, which is used to prevent water from entering the thrust bearing between the active part and the passive part; The lower part is provided with a flexible floating ring, and an annular baffle is arranged on the outer periphery of the passive part, and the flexible floating ring is sealed against the peripheral annular baffle of the passive part under the action of water buoyancy. The setting of the sealing sleeve ensures that the active part, the passive part and the bearing will not be corroded by water, and will not affect the movement of the active part and the passive part.

Description

The water seal structure of the swing device of the pulsator swing washing machine

technical field

The invention relates to a washing machine, in particular to a water seal structure of a swing device of a pulsator swing type washing machine. the

Background technique

The washing machine washes clothes by rotating a cylindrical rotating tub filled with clothes and washing water. This kind of washing machine is divided into drum washing machine and wave wheel washing machine. For a front-loading washing machine, the rotary tub is installed horizontally inside the cabinet and repeatedly rotates back and forth around the horizontal axis of the cabinet to move the laundry on the inner lower surface of the rotary tub upwards and allow the laundry on top of the rotary tub to fall into the rotary tub due to gravity in the bottom to wash the laundry. The pulsator washing machine has a rotary tub with a pulsator (pulsator) vertically installed in the cabinet and rotates back and forth around the vertical axis of the cabinet, thereby washing the clothes in the rotary tub with forced water flow generated by the pulsator passing through the clothes. FIG. 1 is a schematic structural view of a traditional pulsator washing machine. As shown in the figure, the pulsator washing machine includes a casing 1 constituting the shell of the washing machine. The barrel part consists of two barrels, which are installed in the casing 1 . That is, the washing tub 2 is vertically installed in the machine casing, and the washing water is contained in it, while the inner tub 3 is installed in the washing tub 2, the inner tub 3 is rotatable and concentric with the washing tub 2, and a large number of dehydration holes are opened on the side wall of the inner tub 3 3c. The pulsator 4 is installed at the bottom in the inner tub 3, and it generates a washing water flow in the inner tub 3. The pulsator washing machine also includes a driving motor 5 and a power transmission part 6 installed between the bottom of the washing tub 2 and the bottom of the cabinet 1 . The drive motor 5 is a reversible motor, which can output reversible power. The power transmission part 6 transmits the reversible power output by the drive motor 5 to the barrel part, thereby making the inner barrel 3 and the pulsator 4 rotate. the

The operation mode of the pulsator washing machine with the pulsator 4 is as follows: the clothes are put into the inner tub 3, the power is turned on, and water is injected into the washing tub 2 at first. The rotation of the driving motor 5 generates a rotational force, which is transmitted to the pulsator 4 through the washing shaft 6b of the power transmission member 6, thereby rotating the pulsator 4 in the opposite direction. The reversible rotation of the pulsator 4 generates a forced washing water flow in the inner tub 3, so that the clothes are forced to move together with the forced washing water flow, while frictionally contacting the inner surface of the inner tub 3 and other clothes, thereby washing the clothes. the

When the washing program is finished, the washing water is discharged to the outside of the washing machine through the drain hose 8. Water injection and rinsing, after the rinsing program, the high-speed rotational force of the drive motor 5 is transmitted to the inner tub 3 through the dehydration shaft 6a of the power transmission part 6, and the inner tub 3 rotates at a high speed to dehydrate the clothes. After the dehydration program ends, the washing machine ends the entire laundry program.

During the operation of the washing mode of the conventional pulsator washing machine, the pulsator 4 alternately rotates in opposite directions to generate a forced wash water flow in the inner tub 3 to wash the laundry. The laundry is forced to move in opposite directions, so the laundry tangles. The traditional pulsator washing machine will wear and damage the clothes, and after the washing operation, the user needs to untangle the entangled clothes, which is inconvenient to use and consumes extra time. the

In addition, in order to make the pulsator 4 rapidly and repeatedly change its rotation direction during the washing process, the reversible drive motor 5 is repeatedly activated at short intervals, consuming a large amount of electric energy. This alternate rotation of the drive motor 5 also reduces its service life. the

Furthermore, the conventional pulsator washing machine enhances the washing effect by forcibly rotating the laundry in opposite directions by using forced water flow. Users must use a lot of water and detergent, which will inevitably pollute the environment. Especially the current lack of water resources, water conservation, and strict restrictions on environmental pollution, need to solve the above-mentioned problems that traditional pulsator washing machines exist. the

An improved laundry technology, such as patent Nos. 95103237.2, 95103238.0, 95103239.9 and other invention patents, proposes a washing machine that makes the pulsator swing, wherein the drive motor 100 drives the drive shaft 92 through the transmission device 102, and the drive shaft 92 passes through the The rotary gear system 95 makes the bottom plate 80 rotate obliquely around an inclined shaft, and the inclined shaft rotates around the central axis of the drive shaft, so as to realize the rotation while generating swing. Due to the mechanical structure, its structure is complicated, and the noise is very large when the gears mesh. In this solution, whether it is washing, rinsing or dehydration, the pulsator is always inclined, and the pulsator is inclined during dehydration, which is not conducive to the balance of drying. the

In the invention patent of application number 02127350 titled washing machine, a device for causing the washboard to swing in the washing machine is disclosed, and the swing device 20 is installed at the bottom of the inner tub 3 . When the washing machine executes the washing procedure, the swing device 20 makes the washboard in an inclined position, and the drive shaft rotates to make the washboard swing, and the clothes swing up and down to be washed. When the washing machine executes the dehydration procedure, the swing device 20 makes the washboard in a horizontal position, so that the swing device 20 rotates together with the inner tub 3 to dry the clothes. The structure of the oscillating device 20 is shown in FIG. 2 , the lower end of the vertical shaft 21 is connected to the upper end of the washing shaft 6 b of the power transmission part 6 by a tubular connecting sleeve 70 . The upper end of the vertical shaft 21 is connected to the lower part of the first rotating part 30 by a first locking pin 32 . When the washing shaft 6b rotates, the vertical rotation shaft 21 rotates together with the first rotation member 30 . the

The upper surface of the first rotating member 30 constitutes a first inclined surface 31 inclined at a certain inclination angle in the radial direction of the washing shaft 6b. The lower surface of the second rotating member 40 is located on the upper surface of the first rotating member 30, and the lower surface of the second rotating member 40 constitutes a second inclined surface 41 along the radial direction of the washing shaft 6b in the same direction as the washing shaft 6b. The first inclined surface 31 is inclined at the same inclination angle. The inclination angles of the two inclined surfaces 31 and 41 determine the up and down swing angle of the washboard 60 . In the present invention, the inclination angle of the two slopes 31 and 41 is preferably about 5° to 20°. The position conversion of the swing device 20 between the swing position and the horizontal position is realized by changing the angular position of the second inclined surface 41 of the second rotating part 40 relative to the first inclined surface 31 of the first rotating part 30, and the inclined rotating shaft 22 can be It is rotatably accommodated in the inclined hole 44 of the second rotating member 40 and has the same inclination angle with respect to the vertical rotation axis 21 as the inclination angles of the first inclined surface 31 and the second inclined surface 41 . The bottom end of the tilting shaft 22 is connected to the top of the first rotating part 30 by a locking pin 33, so the tilting shaft 22 and the first rotating part 30 rotate together. When the vertical rotating shaft 21 rotates, the first rotating member 30 and the tilting rotating shaft 22 rotate simultaneously. the

A supporting part 80 is sleeved on the second rotating part 40, the supporting part 80 is rotatably supporting the second rotating part 40, and supporting part 80 is supporting the washboard 60 simultaneously, so that the washboard 60 swings up and down during the washing process without turn. In order to support the second rotating part 40 and make the second rotating part 40 rotatable relative to the supporting part 80 , the first bearing 42 is installed between the second rotating part 40 and the supporting part 80 . In order to seal the first bearing 42, two oil seals 43 are installed on the upper and lower ends of the first bearing 42 respectively. The upper surface of the second rotating member 40 is a horizontal plane. An actuating part 50 is located on the horizontal upper surface of the second rotating part 40 . the

The actuating part 50 includes an actuating plate 51 fastened on the upper surface of the second rotating part 40 by a locking bolt 55 . Two spaced apart pins 53 protrude upward from the upper surface of the actuating member 50 to a predetermined height at spaced apart positions. The actuating pin 54 is horizontally installed on the upper end of the tilting shaft 22, and the actuating pin 54 is blocked by one of the pin 52 and the pin 53 according to the turning of the tilting shaft 22, so that the second rotating part 40 is rotated in a desired direction to cause the rubbing The deck is in an inclined position or in a horizontal position. The supporting member 80 is covered by a cover 85 . The second rotating member 40 is rotatably mounted in the supporting member 80 by the bearing 42 . Therefore, regardless of whether the second rotating member 40 rotates, the supporting member 80 must be stabilized so that the supporting member 80 does not rotate. To achieve the above purpose, a flexible holder 86 is installed between the housing 24 and the support member 80 around the first rotating member 30 and the central portion of the housing 24 . The fixer 86 is flexible in the vertical direction so as to adapt to the swing of the washboard 60 . The upper end and the lower end of the fixer 86 are respectively fastened on the housing 24 and the support member 80 by fastening wires. the

The 02127350 patent solves the problems of 95103238.0 that the noise is large and the pulsator tilts during dehydration, which is not conducive to the balance of drying. However, this structure still has the following deficiencies:

1. The inclined surfaces between the first rotating part 30 and the second rotating part 40 are in contact with each other, causing wear and tear, and the inclination angle and level cannot be guaranteed. the

2. The first rotating part 30 and the second rotating part 40 are immersed in the washing liquid during operation, and are easily corroded.

Contents of the invention

The object of the present invention is to provide a water seal structure of a pulsator swing washing machine in view of the above-mentioned deficiencies in the prior art. the

The swing in the present invention refers to the rotation of the pulsator shaft, or other means, so that the points on the pulsator other than the center fluctuate up and down, but the points do not move in the horizontal direction. the

The water seal structure of the pulsator swing washing machine provided by the present invention is realized by the following technical scheme. the

A water seal structure of a swing device for a pulsator swing washing machine, used for a pulsator swing washing machine, the pulsator swing washing machine includes an outer tub, an inner tub, a pulsator, a dehydration shaft connected to the inner tub, and a dehydration shaft connected to the pulsator The pulsator shaft arranged coaxially, and the oscillating device connecting the pulsator shaft and the pulsator to make the pulsator oscillate during the washing process, the top of the oscillating device is provided with a vibrating member connected to the pulsator, and the dehydration shaft below the pulsator An impeller is provided on the top, and the feature is that a seal sleeve is provided between the lower end of the pendulum part and the passive part to prevent water from entering the thrust bearing between the active part and the passive part; the seal sleeve is a flexible seal The upper end of the sleeve is sealed and fixed on the outer circle of the pendulum, and the lower part is provided with a flexible floating ring, and an annular baffle is arranged on the outer periphery of the passive part. The baffle is sealed. the

The water seal structure of the swing device of the pulsator swing washing machine is characterized in that the flexible floating ring is an inflatable rubber ring. the

The water seal structure of the swing device of the pulsator swing washing machine is characterized in that the flexible floating ring is a foam plastic ring, and the outer surface is provided with a waterproof layer. the

The water seal structure of the swinging device of the pulsator swing washing machine is characterized in that: the sealing sleeve is a flexible sealing sleeve, the upper end of which is sealed and fixed on the outer circle of the pendulum vibration member, and the lower part is provided with a sealing sleeve pressed against the impeller. Heavy ring on the back. the

The water seal structure of the swing device of the pulsator swing washing machine is characterized in that: the heavy ring is a metal heavy ring, such as a cast iron ring. the

The water seal structure of the swing device of the pulsator swing washing machine is characterized in that: the heavy ring is a non-metallic heavy ring, such as a cement ring. the

The water seal structure of the swinging device of the pulsator swing washing machine is characterized in that: the sealing sleeve is a flexible sealing sleeve, the upper end of which is sealed and fixed on the outer circle of the pendulum vibration member, and a magnetic ring is arranged at the lower part of the sealing sleeve. A ring made of ferromagnetic material is arranged on the back of the impeller, and the flexible sealing sleeve is sealed by the lower magnetic ring being adsorbed on the ring made of ferromagnetic material. the

The advantages of the present invention are:

The setting of the sealing sleeve ensures that the active part, the passive part and the bearing will not be corroded by water, and will not affect the movement of the active part and the passive part. the

In order to have a further understanding of the structure, characteristics and effects of the present invention, the specific embodiments are listed hereby and are described in detail in conjunction with the accompanying drawings as follows:

Description of drawings

Fig. 1 is a structural diagram of an existing swing washing machine. the

Fig. 2 is a structure diagram of another existing swing washing machine. the

Fig. 3 is a structural diagram of the swing washing machine of the present invention. the

Fig. 4 is a structural diagram of the sealing sleeve of the swing washing machine of the present invention. the

Detailed ways

The present invention provides a water seal structure for a swinging device of a pulsator swing washing machine, and the pulsator swing washing machine is shown in FIG. 3 . The swinging washing machine of the present invention comprises an outer tub 101, an inner tub 102, a pulsator 103, a hollow overcoat dehydration shaft 104 connected to the inner tub 102 and a pulsator shaft 105 coaxially arranged with the hollow overcoat dehydration shaft connected to the pulsator, and during the washing process the The oscillating device in which the pulsator 103 swings, wherein: the driving shaft of the universal rotating shaft is connected on the pulsator shaft 105, and a driving part 108 is connected with the driven shaft of the universal rotating shaft through a spline or a square shaft hole, so that the universal rotating shaft The driven shaft drives the active part 108 to rotate; the dehydration shaft 104 is fixedly connected to the bottom of the inner barrel through the flange 111, and the end of the dehydration shaft 104 is provided with an extension section extending into the inner passage, and the dehydration shaft 104 Two side-by-side bearings and a one-way bearing are arranged on the outer side of the extension section of the dehydration shaft 104; slopes at the same angle. The inclined planes at the same angle are arranged so that after the two inclined planes meet, the active part 108 and the passive part 110 are coaxial, and when the two inclined planes meet after a relative rotation of 180 degrees, the axes of the active part 108 and the passive part 110 intersect at a certain angle, which is equal to Twice the angle between the major diameter of the inclined plane ellipse and the diameter coplanar with the major diameter of the ellipse on the vertical section circle. A cavity is provided between the two ends, and an end thrust bearing is arranged in the cavity, and the end thrust bearing is a plane thrust needle roller bearing. In order to avoid friction between the end faces of the active part 108 and the passive part 110, the service life is improved. the

The active part 108 and the passive part 110 of the washing machine of the present invention are rotated by 180 degrees, so that the active part 108 is coaxial with the passive part 110 or intersecting with the passive part 110 respectively, and can drive the passive part 110 to rotate. the

An impeller 140 is provided between the bottom surface of the inner tub 102 and the impeller 103 to prevent the passive part and the active part from moving together during the straightening process of the impeller. The impeller 140 is fixedly connected to the passive part 110 . The pulsator is provided with a protruding swinging head 160 in the middle, so as to shake and beat the clothes during the washing process. the

In order to prevent washing water from entering the active parts, passive parts, bearings and cardan shafts, there are multiple water seals on the rocking device, including:

A large water seal is provided between the end of the driven part 110 and the dehydration shaft 104 to prevent washing water from entering the bearing;

A sealing ring is provided between the pulsator 103 and the pendulum member 116;

A sealing sleeve 150 is provided between the pendulum member 116 and the back of the impeller 140 to prevent water from entering the thrust bearing between the driving member and the passive member. the

As shown in Figure 4, the sealing sleeve is a flexible sealing sleeve, the upper end of which is sealed and fixed on the outer circle of the pendulum member, a flexible floating ring is provided at the lower part, and an annular baffle is provided on the outer periphery of the passive member. Under the action of water buoyancy, the floating ring is sealed against the peripheral annular baffle of the passive part. the

The flexible floating ring is an inflatable rubber ring or a foam plastic ring, and the outer surface is provided with a waterproof layer. the

The rocking device of the present invention actually utilizes the structure of two cams (active and passive parts). The rotating shaft of the universal joint is connected to the pulsator shaft of the ordinary speed reducer. The lower circumference of the universal driven shaft is provided with splines. The active part is connected with the driven shaft of the universal shaft through a spline; two side-by-side bearing sleeves are installed inside a shimmy part on the driven shaft of the universal shaft, and the shim part can rotate freely under the action of the two parallel bearings. The plate (pulsator) is fixed on the vibration part; the passive part is loaded into a one-way bearing, two parallel bearings, and a large water seal in sequence, and then the integrated passive part is set on the dehydration shaft. The contact surfaces of the active part and the passive part are slopes at the same angle, and needle bearings are arranged between the two ends. the

When washing, the motor reverses, and the washing shaft of the reducer drives the universal rotating shaft to rotate through the universal joint, and the universal rotating shaft drives the active part to rotate. After the active part rotates and tilts along the inclined plane, the bent driving rod of the active part drives the protruding column on the side of the passive part below, and the active part and the passive part keep rotating in an inclined state. Since the pendulum part and the universal rotating shaft are connected by bearings, the wobble plate (wave wheel) installed integrally with the pendulum part can rotate freely around the universal rotating shaft, but the grinding force between the periphery of the wave wheel and the bottom of the barrel makes the universal rotating shaft It rotates in the bearing but the oscillating impeller cannot rotate, so that each point of the oscillating impeller can only vibrate. In the washing working state, the pulsator is always tilted. the

During dehydration, the motor rotates forward, the active part rotates in the reverse direction, and the driving rod of the active part drives the convex column on the other side of the passive part. Under the action of the one-way bearing of the passive part, the passive part cannot rotate forward together with the active part, and the universal shaft is blocked. Upright, the active part and the passive part are in a vertical state, and the active part, the passive part and the inner barrel run together for dehydration. In the dehydration state, the pulsator pendulum is in a horizontal state. the

During the oblique forward and reverse conversion process of the active part, the flexible floating ring at the lower end of the flexible sealing sleeve is always in close contact with the annular baffle on the outer periphery of the passive part under the action of buoyancy to ensure that the washing water does not enter the flexible seal inside the set. the

Claims (7)

1. A water seal structure of a pulsator swing type washing machine swing device, which is used for a pulsator swing type washing machine, and the pulsator swing type washing machine includes an outer tub, an inner tub, a pulsator, a dehydration shaft connected to the inner tub, and a connection with the pulsator The pulsator shaft arranged coaxially with the dehydration shaft, and the oscillating device connecting the pulsator shaft and the pulsator to make the pulsator oscillate during the washing process, the top of the oscillating device is provided with a pendulum member connected to the pulsator, and the bottom of the pulsator There is an impeller on the dehydration shaft, which is characterized in that: the driving shaft of the universal rotating shaft is connected to the pulsator shaft, and a driving part is connected with the driven shaft of the universal rotating shaft through a spline or a square shaft hole, and the dehydrating shaft The end of the dehydration shaft is provided with an extension section extending into the inner barrel, and two side-by-side bearings and a one-way bearing are arranged on the outside of the extension section of the dehydration shaft, and a passive part is sleeved on the one-way bearing on the extension section of the dehydration shaft; The end faces of the active part and the passive part are inclined at the same angle. A large water seal is provided between the end of the passive part and the dehydration shaft to prevent washing water from entering the bearing. A sealing ring, a sealing sleeve is provided between the pendulum part and the outer periphery of the lower end of the passive part, which is used to prevent water from entering the thrust bearing between the active part and the passive part; the sealing sleeve is a flexible sealing sleeve, and its upper end is sealed and fixed On the outer circle of the vibrating part, a flexible floating ring is arranged at the lower part, and an annular baffle is arranged on the outer periphery of the driven part. 2. The water seal structure of the swing device of the pulsator swing washing machine according to claim 1, wherein the flexible floating ring is an inflatable rubber ring. 3. The water seal structure of the swinging device of the pulsator swing washing machine according to claim 1, wherein the flexible floating ring is a foam plastic ring, and the outer surface is provided with a waterproof layer. 4. The water seal structure of the swinging device of the pulsator swing washing machine according to claim 1, characterized in that: the lower part of the sealing sleeve is provided with a heavy ring pressed against the back of the impeller. 5. The water seal structure of the swing device of the pulsator swing washing machine according to claim 4, wherein the heavy ring is a metal heavy ring. 6. The water seal structure of the swing device of the pulsator swing washing machine according to claim 4, wherein the heavy ring is a non-metallic heavy ring. 7. The water seal structure of the swinging device of the pulsator swing washing machine according to claim 1, characterized in that: a magnetic ring is provided at the lower part of the sealing sleeve, and a ring made of ferromagnetic material is provided at the back of the impeller , the flexible sealing sleeve is sealed by the adsorption of the lower magnetic ring on the ring made of ferromagnetic material.

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