CN112481938B - Clutch of washing machine - Google Patents
Clutch of washing machine Download PDFInfo
- Publication number
- CN112481938B CN112481938B CN202011473510.2A CN202011473510A CN112481938B CN 112481938 B CN112481938 B CN 112481938B CN 202011473510 A CN202011473510 A CN 202011473510A CN 112481938 B CN112481938 B CN 112481938B
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- Prior art keywords
- brake
- clutch
- input shaft
- shaft
- sleeve
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention discloses a washing machine clutch, which comprises an input shaft, an input shaft bushing, a washing shaft, a dewatering shaft, a clutch mechanism and a speed reducing mechanism, wherein the input shaft bushing is arranged on the input shaft; the clutch mechanism comprises a clutch shaft sleeve, a clutch torsion spring, a clutch pin and a clutch electromagnet; the clutch shaft sleeve is fixedly sleeved on the first clutch section of the input shaft; the clutch torsion spring is sleeved outside the clutch shaft sleeve, the clutch pin is positioned on the outer side of the bottom end of the clutch torsion spring, and the clutch electromagnet is positioned on the outer side of the clutch pin; the input shaft bushing is sleeved outside the second clutch section of the input shaft; the lower end of the input shaft bushing is fixed with the upper end of the clutch torsion spring and rotates along with the clutch torsion spring; the speed reducing mechanism comprises a speed reducing mechanism shell and a speed reducing assembly, and the speed reducing mechanism shell is fixed on the platform end face at the top end of the input shaft bushing; the dewatering shaft is sleeved outside the washing shaft; the lower end of the washing shaft is arranged in the speed reducing component; the lower end of the dewatering shaft is fixed with the casing of the speed reducing mechanism. The invention has the advantages of convenient installation, simple processing, low manufacturing cost and the like.
Description
Technical Field
The invention belongs to the field of machinery, relates to a washing machine structure, and particularly relates to a washing machine clutch.
Background
Most of the common washing machine clutches in the market today are speed reduction clutches with brakes, and comprise a clutch housing, a pulsator shaft, a dewatering shaft, a clutch mechanism and a driving mechanism, wherein the pulsator shaft is arranged in the clutch housing and is nested on the dewatering shaft, the input end of the pulsator shaft is connected with the driving mechanism through a gear shaft, and the output end of the pulsator shaft is connected with a pulsator. The input end of the dewatering shaft is connected with the clutch shaft, the output end of the dewatering shaft is connected with the dewatering barrel, and the clutch shaft is connected with or separated from the driving mechanism through the ratchet wheel-pawl clutch mechanism, so that the functions of speed reduction, clutch and braking are realized, and two main states of forward and reverse rotation of the impeller, low-speed washing and unidirectional high-speed rotation of the dewatering barrel are achieved.
The main disadvantages of this washing machine clutch are:
1. the clutch has various parts and large volume, and is not beneficial to the light weight of products.
2. The requirement on the coaxiality processing is high, and the manufacturing cost is high.
3. The reliability of the spiral torsion spring parts is poor, and the interchangeability of the clutch is poor.
4. When the scale production is carried out, the production efficiency is low and the product quality is poor.
As time goes on or the brake pull rod is not installed correctly during installation, the torsion spring cannot be completely separated from the brake band, so that the resistance is too large in the dehydration process and even the brake is in failure. In addition, because of the existence of a clutch lever mechanism, the structure is somewhat complicated, and the requirement on the outer surface of the clutch is higher in processing.
Disclosure of Invention
The invention provides a novel washing machine clutch which is simple to process, convenient to install and low in manufacturing cost, and aims to overcome the defects in the prior art.
To achieve the above object, the present invention provides a clutch for a washing machine, having the following features: comprises an input shaft, an input shaft bushing, a washing shaft, a dewatering shaft, a clutch mechanism and a speed reducing mechanism; the input shaft is sequentially divided into an input section, a first clutch section, a second clutch section and a reduction gear section from bottom to top; the input section at the lower end of the input shaft is connected with a driving device of the washing machine, and the driving device drives the input shaft to rotate; the clutch mechanism comprises a clutch shaft sleeve, a clutch torsion spring, a clutch pin and a clutch electromagnet; the clutch shaft sleeve is fixedly sleeved on the first clutch section of the input shaft and rotates along with the input shaft; the clutch torsion spring is sleeved outside the clutch shaft sleeve, the clutch pin is positioned outside the bottom end of the clutch torsion spring, and the clutch electromagnet is positioned outside the clutch pin; when the clutch electromagnet is electrified, the iron core of the clutch electromagnet acts to push the clutch pin to move inwards to abut against the bottom end of the clutch torsion spring, and a gap is reserved between the clutch torsion spring and the clutch shaft sleeve and does not rotate along with the clutch shaft sleeve; when the clutch electromagnet is power-off, the iron core is withdrawn, the clutch torsion spring is twisted and reset, and the clutch torsion spring is tightly held with the clutch shaft sleeve and rotates along with the clutch shaft sleeve; the input shaft bushing is sleeved outside the second clutch section of the input shaft, and the input shaft can rotate relative to the input shaft; the lower end of the input shaft bushing is fixed with the upper end of the clutch torsion spring and rotates along with the clutch torsion spring; the top end of the input shaft bushing is provided with a platform end surface extending outwards; the speed reducing mechanism comprises a speed reducing mechanism shell and a speed reducing assembly, the speed reducing mechanism shell is fixed on the platform end face at the top end of the input shaft bushing, the speed reducing assembly is arranged in the speed reducing mechanism shell, and the speed reducing gear section of the input shaft is arranged in the speed reducing assembly; the dewatering shaft is sleeved outside the washing shaft, and the dewatering shaft and the washing shaft can rotate relatively; the lower end of the washing shaft is arranged in the speed reducing assembly, when the input shaft rotates relative to the input shaft bushing, the rotation of the input shaft is transmitted to the washing shaft through the speed reduction of the speed reducing assembly, and the washing shaft rotates at a low speed along with the speed reduction; the lower end of the dewatering shaft is fixed with the shell of the speed reducing mechanism, and when the bushing of the input shaft rotates along with the input shaft, the shell of the speed reducing mechanism drives the dewatering shaft to synchronously rotate along with the input shaft.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the device also comprises a braking mechanism; the brake mechanism comprises a brake fixed sleeve, a brake movable sleeve, a brake torsion spring, an end face brake disc, a brake plate, a brake pad and a brake electromagnet; the brake fixed sleeve is sleeved on the input shaft bushing, and the brake fixed sleeve and the input shaft bushing can rotate relatively; the brake movable sleeve is fixedly sleeved on the input shaft bushing and is positioned below the brake fixed sleeve; the brake torsion spring is sleeved outside the brake fixed sleeve and the brake movable sleeve, the upper part of the brake torsion spring is connected with the brake fixed sleeve, and the lower part of the brake torsion spring is connected with the brake movable sleeve; the top end of the brake fixed sleeve is provided with a brake end surface, and an end surface brake disc is sleeved outside the input shaft bushing and positioned above the brake end surface of the brake fixed sleeve; the bottom surface of the outer side of the end surface brake disc is provided with a brake end surface, and the brake plate is sleeved outside the input shaft bushing and is positioned below the brake end surface of the end surface brake disc; the brake block is fixed on the outer side of the end surface brake disc and is positioned between the end surface brake disc and the brake plate; the brake electromagnet is positioned on the outer side above the brake plate, and the brake plate is made of metal; the brake electromagnet is electrified, the brake plate is adsorbed on the brake electromagnet, the brake pad is extruded and deformed, meanwhile, the end face brake disc is lifted up and separated from the brake fixed sleeve, and the input shaft bushing can rotate; the brake electromagnet is de-energized, the brake plate moves downwards, the brake pad is loosened, the end face brake disc is abutted against the brake end face of the brake fixed sleeve due to the self weight and the counter force of the brake pad, the brake fixed sleeve is static, the brake movable sleeve and the input shaft bushing continue to rotate due to inertia, the brake torsion spring generates a torque opposite to the rotation direction of the input shaft bushing, the brake movable sleeve is tightly held, the input shaft bushing is braked, and the dewatering shaft is static immediately.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the device also comprises a shell; the upper part of the second clutch section of the input shaft, the upper part of the input shaft bushing, the speed reducing mechanism, the washing shaft and the lower part of the dewatering shaft are all positioned in the shell; the end face brake disc and the brake plate are both positioned below the shell, and the brake electromagnet is fixed on the outer bottom surface of the shell in a power-off manner; the brake mechanism also comprises a brake screw and a pressure spring; the head of the brake screw faces downwards, penetrates through the brake plate and is vertically fixed outside the bottom surface of the shell, and the brake plate moves up and down on the brake screw; the pressure spring is sleeved on the brake screw and positioned between the brake plate and the shell; the brake electromagnet is electrified, the brake plate moves upwards and is adsorbed on the brake electromagnet, and the pressure spring is compressed; when the brake electromagnet is powered off, the brake plate falls on the head of the brake screw due to the restoring elasticity and the self gravity of the pressure spring.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the clutch mechanism shell is arranged outside the brake torsion spring and the clutch torsion spring, and the top end of the clutch mechanism shell is lower than the brake end surface of the brake fixed sleeve; mounting holes are formed in the bottom of the side face of the clutch mechanism shell and in positions opposite to the ends of the bottoms of the clutch torsion springs, and clutch pins are arranged in the mounting holes; the clutch electromagnet is positioned outside the clutch mechanism shell, and the iron core of the clutch electromagnet is opposite to the clutch pin arranged in the mounting hole.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the speed reduction assembly comprises an inner gear ring, a planet carrier cover, a planet tie rod, a plurality of planet gears and a connecting pin; the inner gear ring is fixed on the input shaft bushing and sleeved outside the input shaft reduction gear section; the planet carrier cover is sleeved on the reduction gear section of the input shaft and can rotate relative to the reduction gear section; the planetary gears are arranged on the planetary carrier cover, between the inner gear ring and the input shaft reduction gear section, and are engaged with the inner gear ring and the input shaft reduction gear section; the connecting pin penetrates through the corresponding planetary gear, and the upper end and the lower end of the connecting pin are respectively connected with the planetary tie bar and the planetary carrier cover; the bottom end of the washing shaft is fixed in the planet tie bar; when the input shaft rotates, a plurality of planetary gears revolve around the reduction gear section, and the planetary tie bars rotate along with the planetary gears, so that the speed reduction output is realized.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: an input rolling bearing is arranged between the input shaft bushing and the shell; an output rolling bearing is arranged between the dehydration shaft and the shell.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: wherein, an input oil-containing bearing is arranged between the input shaft and the input shaft bushing.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: wherein, two sections of output oil-containing bearings and one section of oil-containing wool rope are arranged between the washing shaft and the dewatering shaft, and the oil-containing wool rope is positioned between the two sections of output oil-containing bearings.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the upper end of the input oil-containing bearing is positioned by utilizing an elastic check ring fixed in an input shaft bushing, the elastic check ring is fixedly arranged in the input shaft bushing, and the elastic check ring is clamped on a shaft shoulder of the input shaft reduction gear section; one end of the output oil-containing bearing is positioned by using an elastic retainer ring, the other end of the output oil-containing bearing is positioned by using an oil-containing wool rope in an extruding way, and meanwhile, the output oil-containing wool rope can also provide lubricating oil and absorb heat; the lower end of the dewatering shaft is fixed with the shell of the speed reducing mechanism; the upper end of the output shaft rolling bearing is positioned by using the upper end surface of the shell, and the lower end of the output shaft rolling bearing is clamped by using a sleeve sleeved outside the dehydration shaft; the upper end of the input shaft rolling bearing is positioned by an input shaft bushing and fixed on the shell, and the inner ring at the upper end of the input shaft rolling bearing supports the input shaft bushing.
Further, the present invention provides a clutch for a washing machine, which may further have the following features: the brake fixed sleeve is made of high manganese steel, the outer side of the end face brake disc and the brake movable sleeve are made of asbestos materials, and other parts of the end face brake disc are made of iron-cobalt-nickel alloy.
The invention has the beneficial effects that:
1. through the improvement of the structure, a shifting fork, a clutch rod and a ratchet wheel and pawl mechanism of a common clutch are removed, and parts of the clutch are reduced, so that the structure is simpler and more compact, the installation is convenient, the processing is simple, and the manufacturing cost is reduced;
2. the clutch pin and the clutch electromagnet are engaged and disengaged, so that the engagement and disengagement are faster; the brake electromagnet and the brake plate brake, the brake area is large, and the brake is rapid and reliable;
3. the brake fixed sleeve in the brake mechanism is made of asbestos materials, and the brake pad and the inner gear ring are made of plastic materials, so that the manufacturing cost of the clutch can be reduced, and the service life of the clutch can be prolonged.
Drawings
FIG. 1 is a diagrammatic view of a washing machine clutch;
FIG. 2 is a schematic view of the clutch structure of the washing machine;
FIG. 3 is a schematic structural view of an input shaft;
FIG. 4a is a schematic structural diagram of the energized state of the clutch electromagnet;
FIG. 4b is a schematic structural diagram of a de-energized state of the clutch electromagnet;
FIG. 5 is a schematic view of the structure of a washing shaft;
fig. 6 is a front sectional view of the ring gear;
FIG. 7a is a front sectional view of the planetary gear;
FIG. 7b is a top view of the planetary gear;
FIG. 8a is a top view of the planet carrier cover;
FIG. 8b is a front cross-sectional view of the planet carrier cover;
FIG. 9a is a top view of the planetary tie;
FIG. 9b is a front cross-sectional view of the planetary tie;
fig. 10 is a functional implementation flow chart of the clutch of the washing machine.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the present invention provides a clutch for a washing machine, which includes an input shaft 1, an input shaft bushing 2, a washing shaft 3, a dehydrating shaft 4, a clutch mechanism, a speed reducing mechanism 6, a brake mechanism 7, and a housing 81.
As shown in fig. 3, the input shaft 1 is divided into an input section 11, a first clutch section 12, a second clutch section 13, and a reduction gear section 14 in this order from bottom to top.
The input section 11 at the lower end of the input shaft 1 is connected with a coupler by a spline and then connected with a driving device (namely a motor) of the washing machine through the coupler, and the driving device drives the input shaft 1 to rotate and comprises forward and reverse rotation of washing or unidirectional rotation of dehydration.
As shown in fig. 2, 4a and 4b, the clutch mechanism includes a clutch sleeve 51, a clutch torsion spring 52, a clutch pin 53 and a clutch electromagnet 54.
The clutch sleeve 51 is fixedly sleeved on the first clutch segment 12 of the input shaft 1 and rotates with the input shaft 1.
The clutch torsion spring 52 is sleeved outside the clutch shaft sleeve 51, the clutch pin 53 is positioned outside the bottom end of the clutch torsion spring 52, and the clutch electromagnet 54 is positioned outside the clutch pin 53.
When the clutch electromagnet 54 is electrified, the iron core of the clutch electromagnet acts to push the clutch pin 53 to move inwards to abut against the bottom end of the clutch torsion spring 52, and a gap is reserved between the clutch torsion spring 52 and the clutch shaft sleeve 51 and does not rotate along with the clutch shaft sleeve 51; when the clutch electromagnet 54 loses power, the iron core thereof is withdrawn, and the clutch torsion spring 52 is twisted and reset, tightly clasps the clutch shaft sleeve 51 and rotates along with the clutch shaft sleeve 51.
The input shaft bushing 2 is sleeved outside the second clutch section 13 of the input shaft 1, and the input shaft 1 can rotate relative to the second clutch section; and the lower end of the input shaft bushing 2 is fixed with the upper end of the clutch torsion spring 52 and rotates with the clutch torsion spring 52, specifically, the upper end of the clutch torsion spring 52 is fixedly sleeved outside the lower end of the input shaft bushing 2.
The top end of the input shaft bushing 2 has a flat end surface extending outward.
The speed reducing mechanism 6 includes a speed reducing mechanism housing 61 and a speed reducing assembly, the speed reducing mechanism housing 61 is fixed on the platform end surface of the top end of the input shaft bushing 2, the speed reducing assembly is arranged in the speed reducing mechanism housing, and the speed reducing gear section 14 of the input shaft 1 is arranged in the speed reducing assembly.
The dewatering shaft 4 is sleeved outside the washing shaft 3, and the two can rotate relatively.
The lower end of the washing shaft 3 is arranged in the speed reducing component, when the input shaft 1 rotates relative to the input shaft bushing 2, the rotation of the input shaft 1 is transmitted to the washing shaft 3 through the speed reduction of the speed reducing component, and the washing shaft 3 rotates at a low speed along with the speed reduction.
The lower end of the dewatering shaft 4 is fixed with the speed reducing mechanism casing 61, and when the input shaft bushing 2 rotates along with the input shaft 1, the speed reducing mechanism casing 61 drives the dewatering shaft 4 to synchronously rotate along with the input shaft.
Specifically, the reduction assembly includes an annular gear 62, a carrier cover 63, a planetary tie rod 64, and a plurality of planet gears 65 and connecting pins 66.
The inner gear ring 62 is fixed on the input shaft bushing 2 and is sleeved outside the reduction gear section 14 of the input shaft 1. The carrier cover 63 is fitted over the reduction gear section 14 of the input shaft 1 and is rotatable relative to the reduction gear section 14. A plurality of planet gears 65 are arranged on the planet carrier cover 63, are positioned between the inner gear ring 62 and the reduction gear section 14 of the input shaft 1, and are meshed with the inner gear ring 62 and the reduction gear section 14 of the input shaft 1. The connecting pins 66 pass through the respective planet gears 65 and are connected at upper and lower ends to the planet tie bars 64 and the planet carrier cover 63, respectively. The bottom end of the washing shaft 3 is fixed in the planetary tie 64. When the input shaft 1 rotates, the plurality of planetary gears 65 revolve around the reduction gear section 14 thereof, and the planetary tie bars 64 rotate therewith, thereby realizing a reduction output.
The brake mechanism 7 comprises a brake fixed sleeve 71, a brake moving sleeve 72, a brake torsion spring 73, an end face brake disc 74, a brake plate 75, a brake pad 76 and a brake electromagnet 77.
The brake stator 71 is sleeved on the input shaft bushing 2, and the brake stator 71 and the input shaft bushing 2 can rotate relatively. The brake moving sleeve 72 is fixedly sleeved on the input shaft bushing 2 and is positioned below the brake fixed sleeve 71. The brake torsion spring 73 is sleeved outside the brake fixed sleeve 71 and the brake movable sleeve 72, the upper part of the brake torsion spring is connected with the brake fixed sleeve 71, and the lower part of the brake torsion spring is connected with the brake movable sleeve 72.
The top end of the brake fixed sleeve 71 is provided with a brake end face, and an end face brake disc 74 is sleeved outside the input shaft bushing 2 and is positioned above the brake end face of the brake fixed sleeve 71. The outer bottom surface of the end surface brake disk 74 has a braking end surface, and the brake plate 75 is fitted over the input shaft bushing 2 and located below the braking end surface of the end surface brake disk 74. The brake pads 76 are fixed to the outer side of the end face brake disk 74 and are located between the end face brake disk 74 and the brake plate 75. The brake electromagnet 77 is positioned above and outside the brake plate 75, and the brake plate 75 is made of a metal material.
The brake electromagnet 77 is energized, the brake plate 75 is attracted to the brake electromagnet 77, the brake pad 76 is deformed by compression, and the end face brake disc 74 is lifted up and separated from the brake stator 71, so that the input shaft bushing 2 can rotate without being restricted by the brake stator 71 and the brake rotor 72.
When the brake electromagnet 77 is de-energized, the brake plate 75 moves downwards, the brake pad 76 is released, the end face brake disc 74 abuts against the brake end face of the brake fixed sleeve 71 due to the self weight and the counter force of the brake pad 76, the brake fixed sleeve 71 is static, the input shaft bushing 2 decelerates but does not immediately brake, the brake movable sleeve 72 and the input shaft bushing 2 continue to rotate due to inertia, the brake torsion spring 73 generates a moment opposite to the rotation direction of the input shaft bushing 2, the brake movable sleeve 72 is tightly held, the input shaft bushing 2 is braked, and the dewatering shaft 4 immediately stops.
The housing 81 is composed of an upper portion and a lower portion, and the upper portion and the lower portion are fixed by screws. The upper part of the second clutch section 13 of the input shaft 1, the upper part of the input shaft bushing 2, the speed reducing mechanism 6 and the lower parts of the washing shaft 3 and the dewatering shaft 4 are all positioned in the shell 81. The end face brake disc 74 and the brake plate 75 are both positioned below the shell 81, and the brake electromagnet 77 is fixed on the outer bottom surface of the shell 81 in a power-off mode.
The brake mechanism 7 further includes a brake screw 78 and a pressure spring 79. The head of the brake screw 78 faces downwards, penetrates through the brake plate 75 and is vertically fixed outside the bottom surface of the shell 81, and the brake plate 75 moves up and down on the brake screw 78. A compression spring 79 is fitted over the brake screw 78 between the brake plate 75 and the housing 81.
When the brake electromagnet 77 is energized, the brake plate 75 moves upward and is attracted to the brake electromagnet 77, and the pressure spring 79 is compressed. The brake electromagnet 77 is de-energized and the brake plate 75 falls on the head of the brake screw 78 due to the restoring force of the pressure spring 79 and its own weight.
The brake screw 78 is sleeved with a flat washer 781 between the brake plate 75 and the head of the brake screw 78.
The clutch further comprises a clutch mechanism shell 82 which is in an inverted step shape and is arranged outside the brake torsion spring 73 and the clutch torsion spring 52, and the top end of the clutch mechanism shell 82 is lower than the brake end face of the brake fixed sleeve 71, so that the end face brake disc 74 is prevented from abutting against the brake fixed sleeve 71.
The bottom of the side surface of the clutch mechanism housing 82 is provided with a mounting hole at a position opposite to the bottom end of the clutch torsion spring 52, and the clutch pin 53 is placed in the mounting hole. The clutch electromagnet 54 is located outside the clutch mechanism housing 82 with its core facing the clutch pin 53 disposed in the mounting hole. The clutch electromagnet 54 and the clutch mechanism housing 82 are fixedly installed in the washing machine.
An input rolling bearing 21 is provided between the input shaft bushing 2 and the housing 81. An output rolling bearing 41 is provided between the dehydrating shaft 4 and the housing 81.
An input oil-retaining bearing 22 is provided between the input shaft 1 and the input shaft bushing 2. Two sections of output oil-containing bearings 42 and one section of oil-containing wool 43 are arranged between the washing shaft 3 and the dewatering shaft 4, and the oil-containing wool 43 is positioned between the two sections of output oil-containing bearings 42.
Wherein, the upper end of the input oil-containing bearing 22 is positioned by a circlip fixed in the input shaft bushing 2, and the circlip is clamped on the shaft shoulder of the reduction gear section 14 of the input shaft 1. One end of the output oil-containing bearing 42 is positioned by using an elastic retainer ring, the other end of the output oil-containing bearing is extruded and positioned by using an oil-containing wool rope 43, and meanwhile, the output oil-containing wool rope 43 can also provide lubricating oil and absorb heat. The lower end of the dewatering shaft 4 is fixed to the speed reduction mechanism casing 61. The upper end of the output shaft rolling bearing is positioned by the upper end surface of the housing 81, and the lower end of the output shaft rolling bearing is clamped by the sleeve 46 fitted over the dewatering shaft 4. The upper end of the input shaft rolling bearing is positioned by the input shaft bushing 2 and fixed on the housing 81, and the inner ring at the upper end of the input shaft rolling bearing supports the input shaft bushing 2.
Wherein, the brake fixed sleeve 71 adopts high manganese steel, the outer side of the end surface brake disc 74 and the brake movable sleeve 72 adopt asbestos materials to increase the wear resistance of the brake mechanism 7; the other parts of the end face brake disc 74 are made of iron-cobalt-nickel alloy so as to facilitate the adsorption of the brake electromagnet 77. The planet tie rod 64, the planet carrier cover 63 and the input shaft bushing 2 are cast by HT150, and the processing is convenient. The top of the dewatering shaft 4 is sealed with the washing shaft 3 by a dewatering sealing ring 44, the dewatering shaft 4 and the shell 81 are sealed by a water output sealing ring 45, the dewatering shaft and the shell are made of rubber materials, and the sealing performance is good. The housing 81 is die-cast, galvanized and waterproof.
When the washing machine is in a low-speed forward and reverse rotation washing state, the clutch electromagnet 54 is electrified, the iron core acts, the clutch pin 53 is pushed to abut against the clutch torsion spring 52, and the clutch shaft sleeve is loosened. At this time, the input shaft 1 rotates in the input oil-containing bearing 22, and transmits the torque of the motor of the driving device to be decelerated through the deceleration mechanism 6, the planet tie rod 64 transmits the torque to the washing shaft 3, the washing shaft 3 rotates in the output oil-containing bearing 42, and finally the pulsator rotates forward and backward, so that the washing machine is in a low-speed washing state.
At this time, the brake mechanism 7 is not operated, that is, the brake electromagnet 77 is not energized, the lower end of the brake plate 75 is dropped on the flat washer 781, the brake pad 76 is in a free state, and the lower surface of the end face disc rotor 74 abuts on the brake stator 71. Since the brake stator 71 is connected to the brake sleeve 72 through the brake torsion spring 73, and the brake sleeve 72 is fixed to the input shaft bushing 2, the input shaft bushing 2 is stationary. Since the input shaft bushing 2 is fixed to the reduction mechanism housing 61, the reduction mechanism housing 61 is stationary. Since the dehydrating shaft 4 is fixed to the speed reducing mechanism casing 61, the dehydrating shaft 4 is stationary, so that the dehydrating tub is in a stationary state.
When the washing machine is in a one-way high-speed rotation dehydration state, the clutch electromagnet 54 is powered off, the iron core is withdrawn, the clutch shaft sleeve is tightly held due to the torsion recovery of the clutch torsion spring 52 and rotates along with the input shaft 1, the clutch torsion spring 52 is connected with the input shaft sleeve 2, and the input shaft sleeve 2 is connected with the shell of the speed reducer, so that the input shaft 1 does not directly transmit the torque of the motor to the dehydration shaft 4 through the speed reducing mechanism 6 any more, finally, the dehydration shaft 4 rotates in one way, and the washing machine is in a high-speed dehydration state.
At this time, the brake mechanism 7 is operated, that is, the brake electromagnet 77 is energized, the brake plate 75 is attracted by the brake electromagnet 77, the brake pads 76 are deformed and pressed, and the lower surface of the end face brake disk 74 is separated from the brake stator 71, so that the rotation of the input shaft bushing 2 is not restricted. At this time, the dehydrating shaft 4 and the washing shaft 3 rotate together, and the dehydrating tub and the pulsator rotate together.
When the washing machine finishes dewatering and needs braking, the brake electromagnet 77 loses power, the brake plate 75 falls on the flat washer 781 due to the elasticity and the self gravity of the pressure spring 79, the brake pad 76 is released, the end face brake disc 74 is enabled to contact the brake fixed sleeve 71 again by the counterforce of the brake pad 76, the brake fixed sleeve 71 is static, at the moment, the dewatering shaft 4 still rotates due to inertia, but the brake movable sleeve 72 is connected with the brake fixed sleeve 71 through the brake torsion spring 73, the torsion spring can not only generate reverse resistance for preventing the brake movable sleeve 72 from rotating, but also can lock the brake fixed sleeve 71 and the brake movable sleeve 72, namely lock the brake fixed sleeve 71 and the brake movable sleeve 72 with the input shaft bushing 2, and therefore the dewatering shaft 4 is in a static state. At this time, the clutch electromagnet 54 is not energized, and the iron core does not operate.
Claims (9)
1. A washing machine clutch, characterized in that:
comprises an input shaft, an input shaft bushing, a washing shaft, a dewatering shaft, a clutch mechanism and a speed reducing mechanism;
the input shaft is sequentially divided into an input section, a first clutch section, a second clutch section and a reduction gear section from bottom to top;
the input section at the lower end of the input shaft is connected with a driving device of the washing machine, and the driving device drives the input shaft to rotate;
the clutch mechanism comprises a clutch shaft sleeve, a clutch torsion spring, a clutch pin and a clutch electromagnet;
the clutch shaft sleeve is fixedly sleeved on the first clutch section of the input shaft and rotates along with the input shaft;
the clutch torsion spring is sleeved outside the clutch shaft sleeve, the clutch pin is positioned outside the bottom end of the clutch torsion spring, and the clutch electromagnet is positioned outside the clutch pin;
when the clutch electromagnet is electrified, the iron core of the clutch electromagnet acts to push the clutch pin to move inwards to abut against the bottom end of the clutch torsion spring, and a gap is reserved between the clutch torsion spring and the clutch shaft sleeve and does not rotate along with the clutch shaft sleeve; when the clutch electromagnet is powered off, the iron core is withdrawn, the clutch torsion spring is twisted and reset, tightly holds the clutch shaft sleeve and rotates along with the clutch shaft sleeve;
the input shaft bushing is sleeved outside the second clutch section of the input shaft, and the input shaft can rotate relative to the second clutch section; the lower end of the input shaft bushing is fixed with the upper end of the clutch torsion spring and rotates along with the clutch torsion spring;
the top end of the input shaft bushing is provided with a platform end surface extending outwards;
the speed reducing mechanism comprises a speed reducing mechanism shell and a speed reducing assembly, the speed reducing mechanism shell is fixed on the platform end surface at the top end of the input shaft bushing, the speed reducing assembly is arranged in the speed reducing mechanism shell, and the speed reducing gear section of the input shaft is arranged in the speed reducing assembly;
the dewatering shaft is sleeved outside the washing shaft, and the dewatering shaft and the washing shaft can rotate relatively;
the lower end of the washing shaft is arranged in the speed reducing assembly, when the input shaft rotates relative to the input shaft bushing, the rotation of the input shaft is transmitted to the washing shaft through the speed reduction of the speed reducing assembly, and the washing shaft rotates at a low speed along with the speed reduction;
the lower end of the dewatering shaft is fixed with the speed reducing mechanism shell, and when the input shaft bushing rotates along with the input shaft, the speed reducing mechanism shell drives the dewatering shaft to synchronously rotate along with the input shaft bushing;
the device also comprises a braking mechanism;
the brake mechanism comprises a brake fixed sleeve, a brake movable sleeve, a brake torsion spring, an end face brake disc, a brake plate, a brake pad and a brake electromagnet;
the brake fixed sleeve is sleeved on the input shaft bushing, and the brake fixed sleeve and the input shaft bushing can rotate relatively;
the brake movable sleeve is fixedly sleeved on the input shaft bushing and is positioned below the brake fixed sleeve;
the brake torsion spring is sleeved outside the brake fixed sleeve and the brake movable sleeve, the upper part of the brake torsion spring is connected with the brake fixed sleeve, and the lower part of the brake torsion spring is connected with the brake movable sleeve;
the top end of the brake fixed sleeve is provided with a brake end surface, and an end surface brake disc is sleeved outside the input shaft bushing and positioned above the brake end surface of the brake fixed sleeve;
the bottom surface of the outer side of the end surface brake disc is provided with a brake end surface, and the brake plate is sleeved outside the input shaft bushing and is positioned below the brake end surface of the end surface brake disc;
the brake block is fixed on the outer side of the end surface brake disc and is positioned between the end surface brake disc and the brake plate;
the brake electromagnet is positioned on the outer side above the brake plate, and the brake plate is made of metal;
the brake electromagnet is electrified, the brake plate is adsorbed on the brake electromagnet, the brake pad is extruded and deformed, meanwhile, the end face brake disc is lifted up to be separated from the brake fixed sleeve, and the input shaft bushing can rotate;
when the brake electromagnet is powered off, the brake plate moves downwards, the brake pad is released, the end face brake disc abuts against the brake end face of the brake fixed sleeve due to the self weight and the counter force of the brake pad, the brake fixed sleeve is static, the brake movable sleeve and the input shaft bushing continue to rotate due to inertia, the brake torsion spring generates torque opposite to the rotation direction of the input shaft bushing, the brake movable sleeve is tightly held, the input shaft bushing is braked, and the dewatering shaft immediately stops.
2. The washing machine clutch as claimed in claim 1, wherein:
the device also comprises a shell;
the upper part of the second clutch section of the input shaft, the upper part of the input shaft bushing, the speed reducing mechanism, the washing shaft and the lower part of the dewatering shaft are all positioned in the shell;
the end face brake disc and the brake plate are both positioned below the shell, and the brake electromagnet is fixed on the outer bottom surface of the shell in a power-off manner;
the brake mechanism further comprises a brake screw and a pressure spring;
the head of the brake screw faces downwards, penetrates through the brake plate and is vertically fixed outside the bottom surface of the shell, and the brake plate moves up and down on the brake screw;
the pressure spring is sleeved on the brake screw and positioned between the brake plate and the shell;
the brake electromagnet is electrified, the brake plate moves upwards and is adsorbed on the brake electromagnet, and the pressure spring is compressed; when the brake electromagnet is powered off, the brake plate falls on the head of the brake screw due to the restoring elasticity and the self gravity of the pressure spring.
3. The washing machine clutch as claimed in claim 1, wherein:
the clutch mechanism shell is arranged outside the brake torsion spring and the clutch torsion spring, and the top end of the clutch mechanism shell is lower than the brake end face of the brake fixed sleeve;
mounting holes are formed in the bottom of the side face of the clutch mechanism shell and in positions opposite to the ends of the bottoms of the clutch torsion springs, and the clutch pins are arranged in the mounting holes;
the clutch electromagnet is positioned outside the clutch mechanism shell, and the iron core of the clutch electromagnet is opposite to the clutch pin arranged in the mounting hole.
4. The washing machine clutch as claimed in claim 1, wherein:
the speed reduction assembly comprises an inner gear ring, a planet carrier cover, a planet tie rod, a plurality of planet gears and a connecting pin;
the inner gear ring is fixed on the input shaft bushing and sleeved outside the input shaft reduction gear section;
the planet carrier cover is sleeved on the reduction gear section of the input shaft and can rotate relative to the reduction gear section;
the planetary gears are arranged on the planetary carrier cover, and the inner gear ring is arranged between the input shaft reduction gear section and meshed with the inner gear ring and the input shaft reduction gear section;
the connecting pin penetrates through the corresponding planetary gear, and the upper end and the lower end of the connecting pin are respectively connected with the planetary tie bar and the planetary carrier cover;
the bottom end of the washing shaft is fixed in the planet tie bar;
when the input shaft rotates, the planetary gears revolve around the reduction gear sections, and the planetary tie bars rotate along with the planetary gears, so that the speed-reducing output is realized.
5. The washing machine clutch as claimed in claim 2, wherein:
an input rolling bearing is arranged between the input shaft bushing and the shell;
an output rolling bearing is arranged between the dehydration shaft and the shell.
6. The washing machine clutch as claimed in claim 5, wherein:
wherein, be equipped with input oiliness bearing between input shaft and the input shaft bush.
7. The washing machine clutch as claimed in claim 6, wherein:
two sections of output oil-containing bearings and one section of oil-containing wool rope are arranged between the washing shaft and the dewatering shaft, and the oil-containing wool rope is positioned between the two sections of output oil-containing bearings.
8. The washing machine clutch as claimed in claim 7, wherein:
the upper end of the input oil-containing bearing is positioned by utilizing an elastic retainer ring in an input shaft bushing and fixedly arranged in the input shaft bushing, and the elastic retainer ring is clamped on a shaft shoulder of the input shaft reduction gear section;
one end of the output oil-containing bearing is positioned by using an elastic retainer ring, the other end of the output oil-containing bearing is extruded and positioned by using an oil-containing wool rope, and meanwhile, the output oil-containing wool rope can also provide lubricating oil and absorb heat;
the lower end of the dewatering shaft is fixed with the shell of the speed reducing mechanism;
the upper end of the output shaft rolling bearing is positioned by utilizing the upper end surface of the shell;
the lower end of the input shaft rolling bearing is positioned by utilizing the lower end surface of the shell and is fixed on the shell.
9. The washing machine clutch as claimed in claim 1, wherein:
the brake fixed sleeve is made of high manganese steel, the outer side of the end face brake disc and the brake movable sleeve are made of asbestos materials, and other parts of the end face brake disc are made of iron-cobalt-nickel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473510.2A CN112481938B (en) | 2020-12-15 | 2020-12-15 | Clutch of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473510.2A CN112481938B (en) | 2020-12-15 | 2020-12-15 | Clutch of washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112481938A CN112481938A (en) | 2021-03-12 |
| CN112481938B true CN112481938B (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011473510.2A Active CN112481938B (en) | 2020-12-15 | 2020-12-15 | Clutch of washing machine |
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| Country | Link |
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| CN (1) | CN112481938B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990853B (en) * | 2022-03-21 | 2023-09-22 | 刘富豪 | Washing machine speed reduction clutch device and double-power washing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100393934C (en) * | 2003-08-04 | 2008-06-11 | 金羚电器有限公司 | Decelerative clutch for fully-automatic washing machine |
| CN2663483Y (en) * | 2003-12-29 | 2004-12-15 | 金羚电器有限公司 | Clutch of full-automatic washing machine |
| CN202148430U (en) * | 2011-05-18 | 2012-02-22 | 常州至精精机有限公司 | Washer transmission device |
| CN104674507B (en) * | 2013-11-29 | 2018-10-12 | 青岛海尔洗衣机有限公司 | Reducing gear clutch for full automatic washing machine |
| CN209468598U (en) * | 2018-12-05 | 2019-10-08 | 宁波普尔机电制造有限公司 | A kind of high-capacity washing machine latch-up-free formula speed-reducing clutch |
| CN110079977B (en) * | 2019-04-24 | 2021-04-16 | 卧龙电气驱动集团股份有限公司 | Integrated motor with clutch transmission structure |
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| CN112481938A (en) | 2021-03-12 |
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