Variable speed driving mechanism of washing machine

Abstract

The variable-speed driving mechanism comprises an outer cylinder, a base, a motor and a washing shaft which is connected with the motor and extends into the outer cylinder, an inner cylinder is arranged in the outer cylinder, an impeller is arranged at the position, located at the bottom of the inner cylinder, in the outer cylinder, and the top of the washing shaft penetrates through a center hole of the impeller and is connected with a connecting sleeve fixedly connected with the bottom of the inner cylinder. The bottom of the impeller is connected with a connecting seat, at least three driving columns and driven gears sleeved on the driving columns are uniformly distributed at the bottom of the connecting seat, a gear is arranged on the washing shaft close to the impeller, and the driven gears are meshed on the gear; the motor and the washing shaft are directly connected to drive the inner drum to rotate at a high speed for spin-drying, the gear is arranged on the washing shaft, the pinion and the impeller are driven by the gear to rotate at a low speed during washing, the structure is compact, transmission is stable, and cost is low. Low-speed washing and high-speed spin-drying are realized by utilizing the speed change mechanism, so that the working efficiency of the washing machine is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of washing machine, especially relates to a washing machine variable speed drive mechanism. BACKGROUND

[0002] With the continuous progress of society, people's living standards also improve, washing machine as a kind of household appliance type is more and more popular, with the industry gradually to the fine, intelligent direction development, under the premise of meeting the basic requirements, washing efficiency and washing effect of washing machine are more and more by people's attention, consumers when selecting washing machine, its washing effect also becomes an important reference index, people's requirements for washing machine have not only can wash clothes so simple, but also can achieve fast and efficient.

[0003] In the prior art, single washing machine or small washing machine adopts detachable inner drum structure, which adopts small inner drum impeller structure, and the small inner drum is detachably arranged on the impeller, after washing is completed, the small inner drum is loaded for spin-drying, in the implementation process, the motor drives the washing shaft to rotate through the belt pulley, and the impeller speed and the small inner drum speed are basically maintained at 200-300 revolutions per minute during washing and spin-drying, which leads to low spin-drying efficiency and poor spin-drying effect. SUMMARY

[0004] The utility model discloses a washing machine variable speed drive mechanism, which drives the inner drum to spin-dry at high speed by directly connecting the motor and the washing shaft, the washing shaft is provided with a gear, and the gear is engaged with not less than three ring gears, in the washing process, the gear drives the ring gears and the impeller to rotate at low speed, the structure is compact, the transmission is stable, the cost is low, the variable speed mechanism is used to realize low-speed washing and high-speed spin-drying, and therefore the working efficiency of the washing machine is improved.

[0005] In order to solve the above technical problems, the utility model discloses a washing machine variable speed drive mechanism, which comprises an outer drum, a base arranged below the outer drum, a motor arranged on the base and a washing shaft connected with the motor and extending into the outer drum, an inner drum is detachably arranged in the outer drum, an impeller is arranged at the bottom of the inner drum in the outer drum, a connecting sleeve fixedly connected with the bottom of the inner drum is connected to the top of the washing shaft through the center hole of the impeller,

[0006] The bottom of the impeller is connected with a connecting seat, and the bottom of the connecting seat is uniformly provided with not less than three driving columns and driven gears sleeved on the driving columns,

[0007] The washing shaft is provided with a gear near the impeller, and the driven gears are engaged on the gear.

[0008] Further, the outer cylinder inner bottom is provided with a waterproof seat sleeved on the washing shaft and a waterproof cover, the waterproof seat bottom is in sealing connection with the outer cylinder inner bottom, the waterproof cover bottom is in sealing connection with the waterproof seat upper surface, and the waterproof seat and the waterproof cover surround a cavity for accommodating the gear and the driven gear.

[0009] Further, the connecting seat lower part is arranged in the cavity, and the connecting seat top extends out of the waterproof cover, and the waterproof cover top and the connecting seat connection part is provided with a waterproof shaft seal.

[0010] Further, the connecting seat top is connected with a spline connecting sleeve through a spline groove, and the spline connecting sleeve is connected on the pulsator through a spline groove I.

[0011] Further, the connecting seat top is connected with a spline connecting sleeve through a spline groove, and the spline connecting sleeve is connected on the pulsator through a spline groove I.

[0012] Further, the connecting seat top is connected with a spline connecting sleeve through a spline groove, and the spline connecting sleeve is connected on the pulsator through a spline groove I.

[0013] Further, the inner cylinder inner middle part is provided with a locking screw, the washing shaft top middle part is provided with an internal thread in threaded connection with the locking screw, the washing shaft is provided with an external thread on the outer wall close to the top, the connecting sleeve is in threaded connection with the external thread, the inner cylinder bottom is provided with a pair of taper connecting columns, and the connecting sleeve is provided with taper connecting holes matched with the taper connecting columns.

[0014] Further, the outer cylinder bottom is provided with through holes around the washing shaft, and the through holes are provided with leather cups sleeved on the washing shaft.

[0015] Further, the waterproof seat inner wall is provided with a waterproof ring sleeved around the pinion.

[0016] Further, the waterproof seat bottom is provided with three layers of waterproof silica gel rings, the three layers of waterproof silica gel ring bottoms extend out of 3-6 limiting columns, and the outer cylinder inner bottom is provided with limiting grooves matched with the limiting columns.

[0017] The washing machine variable speed driving mechanism has the advantages that:

[0018] 1. The washing machine variable speed driving mechanism directly connects the motor and the washing shaft to drive the inner cylinder to rotate at high speed for spin-drying, the washing shaft is provided with a gear, the pinion is engaged with the gear, the pinion is arranged in not less than three rings, the gear drives the pinion and the pulsator to rotate at low speed during washing, the structure is compact, the transmission is stable, the cost is low, the variable speed mechanism is used to realize low-speed washing and high-speed spin-drying, and therefore the working efficiency of the washing machine is improved.

[0019] 2, the utility model discloses a washing machine variable speed drive mechanism utilizes motor and washing shaft direct connection, when carrying out spin-drying, the inner tube speed can reach 1000r / min, when washing, the impeller speed can be controlled at 200-300r / min. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the installation state diagram of the utility model discloses a washing machine variable speed drive mechanism;

[0021] Fig. 2 is the installation state sectional view of the utility model discloses a washing machine variable speed drive mechanism;

[0022] Fig. 3 is the structure diagram of the utility model discloses a washing machine variable speed drive mechanism;

[0023] Fig. 4 is the sectional view of the utility model discloses a washing machine variable speed drive mechanism.

[0024] Reference signs: 1, outer tube;2, base;3, motor;4, washing shaft;5, inner tube;6, drain hole;7, impeller;8, drain bin;9, water barrier seat;10, leather bowl;11, water outlet hole;12, water barrier cover;13, limiting column;14, mounting seat;15, locking screw;16, internal thread;17, external thread;18, connecting sleeve;19, conical connecting column;20, spline connecting sleeve;21, upper shaft seal;22, connecting seat;23, driven gear;24, lock catch;25, water barrier shaft seal;26, lower shaft seal;27, gear;28, water barrier ring;29, drive column. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] As Figures 1-4 The utility model discloses a washing machine variable speed drive mechanism's structure diagram, the utility model discloses a washing machine variable speed drive mechanism, including outer tube 1, set up in the outer tube 1 below base 2, set up on base 2 motor 3 and with motor 2 connection extension to the washing shaft 4 in the outer tube, the outer tube 1 can detachably set up with inner tube 5, the outer tube 1 in the inner tube 5 bottom place set up with impeller 7, the washing shaft 4 top passes through the impeller 7 center hole place connection has with the inner tube 5 bottom fixed connection connecting sleeve 18,

[0027] The impeller 7 bottom is connected with the connecting seat 22, and the connecting seat 22 is uniformly distributed with not less than three drive columns 29 and driven gears 23 sleeved on the drive columns 29,

[0028] The washing shaft 4 is provided with a gear 27 near the impeller 7, and the driven gears 27 are engaged on the gears 23.

[0029] The inner cylinder 5 in the embodiment is arranged as a dehydration cylinder, and can also be arranged as a washing cylinder. The washing cylinder is installed during washing to improve the washing effect.

[0030] In the embodiment, the motor 2 and the washing shaft 4 are directly connected to drive the inner cylinder 5 to rotate at high speed for spinning. The washing shaft 4 is provided with a gear 27. The gear 27 is engaged with no less than three ring-shaped pinions 23. During washing, the gear 27 drives the pinions 23 and the pulsator to rotate at low speed. The structure is compact, the transmission is stable, the cost is low, and the variable speed mechanism is used to realize low-speed washing and high-speed spinning, thereby improving the working efficiency of the washing machine.

[0031] In the preferred embodiment, the inner bottom of the outer cylinder 1 is provided with a water-proof seat 9 and a water-proof cover 12 which are sleeved on the washing shaft 4. The bottom of the water-proof seat 9 is sealingly connected with the inner bottom of the outer cylinder 1, and the bottom of the water-proof cover 12 is sealingly connected with the upper surface of the water-proof seat 9. A cavity for accommodating the gear 27 and the driven pinions 23 is formed between the water-proof seat 9 and the water-proof cover 12. In the embodiment, the water-proof cover 12 is installed on the water-proof seat 9 by means of bolts and sealing pads. In the embodiment, the water-proof seat 9 and the water-proof cover 12 can also be made of plastic material. An annular clamping groove is arranged on the water-proof seat 9, and the bottom edge of the water-proof cover 12 is sealingly clamped in the annular clamping groove.

[0032] In the preferred embodiment, the lower part of the connecting seat 22 is arranged in the cavity, and the upper part of the connecting seat 22 extends out of the water-proof cover 9. A water-proof shaft seal 12 is arranged at the connecting position between the top of the water-proof cover 9 and the connecting seat 22. In the embodiment, the water-proof shaft seal 12 is beneficial to sealing the cavity and the gear transmission assembly when the connecting seat 22 drives the pulsator 7 to rotate along with the rotation of the pinions, thereby avoiding water from entering the cavity to corrode the gear and achieving the purpose of prolonging the service life of the equipment.

[0033] In the preferred embodiment, the top of the connecting seat 22 is connected with a spline connection sleeve 20 through a spline groove. The spline connection sleeve 20 is connected with the pulsator 7 through a spline groove I. In the embodiment, after the water-proof seat 9, the washing shaft 4, the pinions, the connecting seat 22 and the water-proof cover 12 are sequentially installed on the inner bottom of the outer cylinder 1 from bottom to top, the pulsator 7 is installed on the connecting seat 22 through the spline connection sleeve 20, so that the pulsator 7 is conveniently installed and has good sealing effect.

[0034] In the preferred embodiment, an upper shaft seal 21 is arranged at the connecting position between the spline connection sleeve 20, the connecting seat 22 and the washing shaft 4. In the embodiment, the structure seals the cavity and the gear transmission assembly, thereby avoiding water from entering the cavity to corrode the gear and achieving the purpose of prolonging the service life of the equipment.

[0035] In the preferred embodiment, the water-proof base 9 is provided with a lower shaft seal 25 sleeved on the washing shaft 4 at the bottom of the cavity, which seals the cavity and the gear transmission assembly to prevent water from entering the cavity to corrode the gear and prolong the service life of the device.

[0036] In the preferred embodiment, the inner cylinder 5 is provided with a locking screw 15 at the middle part, the washing shaft 4 is provided with an inner thread 16 threadedly connected with the locking screw 15 at the middle part of the top, the washing shaft 4 is provided with an outer thread 17 on the outer wall near the top, a connecting sleeve 18 is threadedly connected with the outer thread 17, the inner cylinder 5 is provided with a pair of tapered connecting columns 19 at the bottom, and the connecting sleeve 18 is provided with tapered connecting holes matched with the tapered connecting columns 17. In this embodiment, after the pulsator 7 is installed in place, the connecting sleeve 18 is installed on the washing shaft 4, the tapered connecting columns 17 on the inner cylinder 5 are clamped into the tapered connecting holes when dehydration is needed, and then the locking screw 15 is locked to prevent the inner cylinder 5 from being thrown out when rotating at high speed.

[0037] In the preferred embodiment, the outer cylinder 1 is provided with through holes around the bottom of the washing shaft 4, and the through holes are provided with leather cups sleeved on the washing shaft 4. In this embodiment, the leather cups seal the bottom of the outer cylinder 1 to prevent water in the outer cylinder 1 from leaking into the base and burning the motor.

[0038] In the preferred embodiment, the water-proof base 9 is provided with a water-proof ring sleeved around the pinion. In this embodiment, the water-proof ring is integrally formed with the water-proof base, and the top of the water-proof ring abuts against the lower surface of the water-proof cover 12. The water-proof ring performs secondary water-proofing on the cavity and the gear transmission assembly to improve the water-proof effect and prevent water from entering the cavity.

[0039] In the preferred embodiment, the water-proof base 9 is provided with three layers of water-proof silica gel rings at the bottom, the three layers of water-proof silica gel rings are extended with three to six limiting columns 13 at the bottom, and the inner bottom of the outer cylinder 1 is provided with limiting grooves matched with the limiting columns 13. In this embodiment, the limiting columns 13 are used to prevent the water-proof base 9 from rotating, and the water-proof silica gel rings not only have the water-proof effect, but also relieve the vibration between the water-proof base 9 and the outer cylinder 1 to achieve the purpose of shock absorption.

[0040] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A variable speed drive mechanism for a washing machine comprising a tub, a base disposed below the tub, a motor disposed on the base, and a wash shaft connected to the motor and extending into the tub, characterized in that: The outer cylinder is detachably provided with an inner cylinder, a pulsator is arranged at the bottom of the inner cylinder in the outer cylinder, and a connecting sleeve fixedly connected with the bottom of the inner cylinder is connected to the top of the washing shaft through the center hole of the pulsator, The bottom of the pulsator is connected with a connecting seat, and the bottom of the connecting seat is uniformly provided with not less than three driving columns and a driven gear sleeved on the driving column, The washing shaft is provided with a gear near the pulsator, and the driven gear is engaged on the gear.

2. A variable speed drive mechanism for a washing machine as claimed in claim 1 wherein: The bottom of the outer cylinder is provided with a waterproof seat sleeved on the washing shaft and a waterproof cover, the bottom of the waterproof seat is sealingly connected with the bottom of the outer cylinder, the bottom of the waterproof cover is sealingly connected with the upper surface of the waterproof seat, and the waterproof seat and the waterproof cover surround a cavity for accommodating the gear and the driven gear.

3. A variable speed drive mechanism for a washing machine as claimed in claim 2 wherein: The lower part of the connecting seat is arranged in the cavity, and the top of the connecting seat extends out of the waterproof cover, and the top of the waterproof cover and the connecting seat are provided with a waterproof shaft seal.

4. A variable speed drive mechanism for a washing machine as claimed in any one of claims 1 to 3, characterised in that: The top of the connecting seat is connected with a spline connecting sleeve through a spline groove, and the spline connecting sleeve is connected on the pulsator through a spline groove I.

5. A variable speed drive mechanism for a washing machine as claimed in claim 4 wherein: The connection between the spline connecting sleeve, the connecting seat and the washing shaft is provided with an upper shaft seal.

6. A variable speed drive mechanism for a washing machine as claimed in claim 2 wherein: The bottom of the waterproof seat in the cavity is provided with a lower shaft seal sleeved on the washing shaft.

7. A variable speed drive mechanism for a washing machine as claimed in claim 1 wherein: The middle of the top of the washing shaft is provided with an internal thread threadedly connected with the locking screw, and the outer wall near the top of the washing shaft is provided with an external thread, and the connecting sleeve is threadedly connected on the external thread.

8. A variable speed drive mechanism for a washing machine as claimed in claim 1 wherein: The bottom of the outer cylinder is provided with through holes around the washing shaft, and the through holes are provided with a leather cup sleeved on the washing shaft.

9. A variable speed drive mechanism for a washing machine as claimed in claim 2 wherein: The inner wall of the waterproof seat is provided with a waterproof ring sleeved around the pinion.

10. A variable speed drive mechanism for a washing machine as claimed in claim 2 wherein: The bottom of the waterproof seat is provided with three layers of waterproof silica gel rings, and the bottom of the three layers of waterproof silica gel rings extends out of three to six limiting columns, and the bottom of the outer cylinder is provided with limiting grooves matched with the limiting columns.

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