Direct-drive DD motor and pulsator washing machine thereof

Abstract

The utility model provides a direct-drive DD motor and a pulsator washing machine thereof, belongs to the technical field of clutch motors, overcomes the technical defects that an existing common clutch is not compact enough in structure, low in transmission efficiency and poor in stability, comprises a motor rotor, and is characterized in that the motor rotor is concentrically sleeved outside a motor stator; the motor stator is fixedly installed on the clutch through the installation base, the motor rotor is installed and connected to the outer circle of the lower end of the impeller shaft, and the motor stator is fixedly installed on the clutch through the installation base and is simple in structure, high in reliability and low in noise; the upper end and the lower end of the clutch sleeve are provided with upper meshing teeth and lower meshing teeth which can be meshed with the fixed meshing teeth and the movable meshing teeth respectively, different clutch modes are provided, a brake wheel and a brake belt are omitted, and cost of the clutch is saved. The drainage motor is connected with the drainage valve through a lantern ring and a pull rope, the lantern ring is arranged on the shifting rod in a sleeving mode, and operation and control are easy.

Description

TECHNICAL FIELD

[0001] The utility model belongs to clutch motor technical field, especially relates to a direct drive DD motor and wave washing machine thereof. BACKGROUND

[0002] In the current wave washing machine technical field, the wave washing machine is popular due to its simple structure and convenient operation. However, with the increasing demand of consumers for washing effect, energy efficiency ratio and diversified washing mode, the traditional wave washing machine gradually shows some limitations in technology. In particular, in the design of the ordinary wave washing machine, how to effectively save cost and efficiently and stably realize the original function of the wave and the washing barrel has become a technical problem to be solved.

[0003] At present, the ordinary wave washing machine on the market adopts a speed reduction gear train to realize the synchronous or separate movement of the wave and the washing barrel. The speed reduction gear train has many parts and a complex structure, and has low transmission efficiency and is prone to energy loss. Although the double-motor structure can realize relatively accurate synchronous or separate control, the cost is high, and the complexity and failure rate of the whole machine are increased. In addition, some ordinary wave washing machines attempt to realize this goal by improving the clutch structure, but generally have problems such as insufficient compactness, low transmission efficiency and poor stability. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a direct drive DD motor and wave washing machine thereof to solve the above technical problems in the prior art.

[0005] To achieve the above purpose, the utility model provides a direct drive DD motor, which comprises a motor rotor, characterized in that: the motor rotor is concentrically sleeved on the outside of a motor stator; the motor stator is fixedly installed on a clutch through a mounting seat; the clutch comprises a bearing cover; a dehydration shaft is rotatably installed in the bearing cover through a rolling bearing; the dehydration shaft is rotatably supported in a bearing bracket through a rolling bearing at the lower part; the bearing bracket is axially attached to the bearing cover; the mounting seat is axially attached to the bearing bracket; a wave shaft is rotatably installed in the dehydration shaft through an oil-containing bearing; and the motor rotor is installed and connected to the outer circle of the lower end of the wave shaft.

[0006] Further, the mounting seat and the bearing bracket are connected through a screw fastening.

[0007] Further, the utility model further comprises a left-right movable supporting lever installed on the bearing bracket; the outer end of the supporting point of the lever extends beyond the outer diameter of the bearing bracket; the other end penetrates through the window of the motor stator and is pressure-connected to a clutch sleeve which is arranged on the outer circle of the dehydration shaft and can slide up and down.

[0008] Further, the upper and lower ends of the clutch sleeve are provided with upper and lower engaging teeth, the upper engaging teeth can be engaged with the fixed engaging teeth arranged on the bearing cover by sliding upward, and the lower engaging teeth can be disengaged from the fixed engaging teeth and engaged with the movable engaging teeth arranged on the end of the motor rotor by sliding downward.

[0009] Further, a large water seal is arranged between the bearing cover and the dehydration shaft, and the bottom of the large water seal is in abutment with the rolling bearing.

[0010] The direct drive DD motor has an outer diameter of the motor rotor of 250-400 mm, the motor stator has 27 slots, and the rotor has 36 stages.

[0011] A pulsator washing machine is provided with the direct drive DD motor, and the pulsator washing machine comprises an outer drum, the outer drum is fixedly connected with the bearing cover of the clutch, the dehydration shaft is fixedly connected with an inner drum, and the pulsator shaft passes through the outer drum and is connected with the pulsator.

[0012] Further, a drainage valve and a drainage motor are arranged on the outer drum, the drainage motor is connected with the drainage valve through a collar and a pull rope, and the collar is sleeved on the lever.

[0013] Further, when the drainage motor is powered on, the pull rope is reeled in and shrinks inward, the collar approaches the drainage motor, the lever is deflected and separated from the clutch sleeve at the fulcrum, the clutch sleeve moves downward under the action of the elastic element in the clutch sleeve, the upper engaging teeth are disengaged from the fixed engaging teeth, and the lower engaging teeth are engaged with the movable engaging teeth, so that the motor rotor drives the dehydration shaft and the pulsator shaft to rotate at high speed for dehydration.

[0014] Compared with the prior art, the direct drive DD motor has the following advantages and beneficial effects:

[0015] 1. The motor rotor of the direct drive DD motor is concentrically sleeved on the outside of the motor stator, the motor stator is fixedly installed on the clutch through the mounting seat, the clutch comprises a bearing cover, the dehydration shaft is rotatably installed in the bearing cover through the rolling bearing, the pulsator shaft is rotatably installed in the dehydration shaft through the oil-containing bearing, and the motor rotor is installed and connected on the lower end outer circle of the pulsator shaft, so that the structure is simple, the reliability is high, and the noise is small.

[0016] 2. The utility model discloses a clutch cover's upper and lower ends are equipped with upper and lower engaging teeth, the upper engaging tooth slides upward and can be engaged with the fixed engaging tooth arranged on the bearing support, the lower engaging tooth slides downward and can disengage the fixed engaging tooth and be engaged with the movable engaging tooth arranged on the motor rotor end, provide a different clutch mode, also save the brake wheel and brake belt, save the cost of clutch;

[0017] 3. The utility model discloses a drain valve and drain motor are also installed on the outer barrel of the utility model discloses, the drain motor is connected with the drain valve through the thimble and the drawstring, the thimble is sleeved on the lever, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model discloses the product;

[0019] Figure 2 It is the front view structure schematic diagram of the utility model discloses the product;

[0020] Figure 3 It is the left view structure schematic diagram of the utility model discloses the product;

[0021] Figure 4 It is the overhead structure schematic diagram of the utility model discloses the product and clutch assembly installation in the washing machine outer barrel bottom;

[0022] Figure 5 It is Figure 4 A-A section view structure schematic diagram;

[0023] Figure 6 It is the section view structure schematic diagram of the utility model discloses the product and clutch assembly;

[0024] In the drawing: 1. motor rotor;2. motor stator;3. mounting seat;4. outer barrel;5. clutch;6. drain valve;7. drain motor;51. bearing cover;52. bearing support;53. dehydration shaft;54. impeller shaft;55. movable engaging tooth;56. clutch cover;57. fixed engaging tooth;8. big water seal;9. rolling bearing;10. lever;11. oil-containing bearing. DETAILED DESCRIPTION

[0025] Combine Figures 1 to 6The utility model relates to a direct drive DD motor and a pulsator washing machine, which comprises a motor rotor 1, the motor rotor 1 is concentrically sleeved on the outside of a motor stator 2, the motor stator 3 is fixedly installed on a clutch 5 through a mounting seat 3, the clutch 5 comprises a bearing cover 51, a dehydration shaft 53 is rotatably installed in the bearing cover 51 through a rolling bearing 9, the dehydration shaft 53 is rotatably supported in a bearing support 52 through a rolling bearing 9 at the lower part, the bearing support 52 is axially attached to the bearing cover 51 and is installed together, the mounting seat 3 is axially attached to the bearing support 52 and is connected through screw fastening, the dehydration shaft 53 is rotatably installed in the bearing cover 51 through an oil-containing bearing 11, and a pulsator shaft 54 is rotatably installed in the dehydration shaft 53, the motor rotor 1 is installed and connected on the outer circle of the lower end of the pulsator shaft 54.

[0026] Preferably, a left-right movable supporting lever 10 is further arranged on the bearing support 1, the outer end of the supporting point of the lever 10 extends beyond the outer diameter of the bearing support 52, the other end is pressure-connected with a clutch sleeve 56 which is arranged on the outer circle of the dehydration shaft 53 and can be slid up and down through the window of the motor stator 2, the upper and lower ends of the clutch sleeve 56 are provided with upper and lower engaging teeth, the upper engaging teeth can be engaged with a fixed engaging tooth 57 arranged on the bearing support 52 by sliding upward, and the lower engaging teeth can be disengaged from the fixed engaging tooth 57 by sliding downward and are engaged with a movable engaging tooth 55 arranged at the end of the motor rotor 1.

[0027] Preferably, a large water seal 8 is further arranged between the bearing cover 51 and the dehydration shaft 53, and the bottom of the large water seal 8 is in abutment with the rolling bearing 9.

[0028] Preferably, the outer diameter of the motor rotor 1 is within 250-400 mm, the slot number of the motor stator 2 is 27, and the rotor stage number is 36.

[0029] A pulsator washing machine with the above direct drive DD motor, the pulsator washing machine comprises an outer drum 4, the outer drum 4 is fixed with the bearing cover 51 of the clutch 5, the dehydration shaft 53 is fixed with the inner drum, the pulsator shaft 54 passes through the outer drum 4 and is connected with the pulsator, the outer drum 4 is also provided with a drain valve 6 and a drain motor 7, the drain motor 7 is connected with the drain valve 6 through a collar and a pull rope, the collar is sleeved on the lever 10, after the drain motor 7 is powered, the pull rope is reeled inwards to contract, the collar approaches the drain motor 7, the lever 10 is pulled to deflect at the fulcrum position and separate from the clutch sleeve 56, the clutch sleeve 56 moves downwards under the action of the elastic element in the clutch sleeve 56, the upper engaging teeth are separated from the fixed engaging teeth 57, and the lower engaging teeth are engaged with the movable engaging teeth 55, the motor rotor 1 drives the dehydration shaft 53 and the pulsator shaft 54 to rotate at high speed, and dehydration is performed; when the drain motor 7 is not powered, the lever 10 is pressed on the lower end surface of the clutch sleeve 56 under the action of the elastic element installed on the lever 10, the elastic force is greater than the elastic force of the elastic element in the clutch sleeve 56, the lower part is separated from the movable engaging teeth 55, the clutch sleeve 56 moves upwards and is engaged with the fixed engaging teeth 57, the clutch sleeve 56 and the dehydration shaft 53 remain stationary under the limitation of the fixed engaging teeth 57, and the motor rotor 1 drives the pulsator shaft 54 and the pulsator to rotate to wash the clothes.

[0030] During assembly, the bearing support 52 and the bearing cover 51 are respectively assembled into the rolling bearing 9, the lever 10 needs to be assembled into the bearing support 52 in advance, the oil-containing bearing 11 is pressed into the inner holes at the upper and lower ends of the dehydration shaft 53, then the dehydration shaft 53 is pressed into the bearing cover 51 provided with the rolling bearing 9, before pressing, the large water seal 8 is sleeved on the outer circle of the dehydration shaft 53, after pressing, the outer diameter of the large water seal 8 is also pressed into the inner hole of the shaft bearing cover 51, then the pulsator shaft 54 is assembled into the dehydration shaft 53, and whether the rotation of the pulsator shaft 54 is flexible is noticed, then the bearing support 52 provided with the rolling bearing 9 is pressed, the bearing support 52 and the bearing cover 51 form an assembly, the assembly of the bearing cover 51 is placed into a tool in an inverted manner, the mounting seat 3 of the motor stator 2 is fastened and installed on the bearing support 52 through screws, the clutch spring is sleeved on the outer circle of the dehydration shaft 53, the clutch sleeve 56 is sleeved along the spline of the dehydration shaft 53, the lever spring is hung on the lever 10, the lever 10 is pressed against the clutch sleeve 56, the clutch sleeve 56 is engaged with the fixed engaging teeth 57, the rotation of the pulsator shaft 54 is observed, whether the rotation is flexible is observed, then the motor rotor 1 is assembled on the pulsator shaft 54, and the nut is tightened.

[0031] The clutch 5 is installed in the washing machine, the outer barrel is upside down, the dehydration shaft 53 of the clutch is inserted into the inner hole in the middle of the outer barrel, the lip of the large water seal is combined with the outer barrel, the bearing cover 51 of the clutch 5 is fastened on the bottom of the outer barrel by self-tapping screw, the drainage motor 7 and the drainage valve 6 are installed, the pull rope of the drainage motor 7 is connected with the drainage valve 6, the middle sleeve is sleeved on the lever 10 of the clutch 5, and the drainage motor 7 is powered on to pull up the lever 10.

[0032] In the washing condition, the clutch sleeve 56 in the pulsator washing machine is pressed tightly on the clutch sleeve 56 by the lever spring of the lever 10, the clutch sleeve 56 is disengaged from the movable engaging teeth 57 on the motor rotor 1 and engaged with the fixed engaging teeth 57 installed on the lower part of the bearing support 52, the dehydration shaft 53 is kept stationary, the motor rotor 1 drives the pulsator shaft 54 and the pulsator to rotate to wash the clothes.

[0033] In the dehydration condition, the drainage motor 7 is powered on to pull the drainage valve 6 to open the drainage, when the drainage time is up, the drainage motor 7 is pulled for a distance, the pull rope and the sleeve pull the lever 10 and overcome the force of the lever spring of the lever 10 to disengage the clutch sleeve 56, the clutch sleeve 56 is pushed down by the clutch spring, the clutch sleeve 56 is disengaged from the fixed engaging teeth 57 installed on the lower part of the bearing support 52 and combined with the movable engaging teeth 57 on the motor rotor 1, the dehydration shaft 53 is engaged with the pulsator shaft 54, the motor rotor 1 drives the pulsator shaft 54, the pulsator, the inner barrel and the clothes to rotate to centrifugal dehydrate.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0035] Although the terms of 1. motor rotor, 2. motor stator, 3. mounting seat, 4. outer barrel, 5. clutch, 6. drainage valve, 7. drainage motor, 51. bearing cover, 52. bearing support, 53. dehydration shaft, 54. pulsator shaft, 55. movable engaging teeth, 56. clutch sleeve, 57. fixed engaging teeth, 8. large water seal, 9. rolling bearing, 10. lever, 11. oil-containing bearing are used more in this paper, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

[0036] The above has carried out the introduction to the direct drive DD motor provided by the utility model, the principle and implementation mode of the utility model have been set forth in the introduction by applying the specific preferred embodiments, these embodiments are only used for helping understanding the principle and core thought of the utility model, it should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the design thought of the utility model, the implementation scheme in the above embodiment can be further combined or replaced, the utility model can be improved and modified several times, these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A direct drive, DD, electric machine comprising an electric machine rotor (1), characterized by: The motor rotor (1) is concentrically fitted outside the motor stator (2), the motor stator (2) is fixedly installed on the clutch (5) through the mounting seat (3), the clutch (5) comprises a bearing cover (51), a dehydration shaft (53) is rotatably installed in the bearing cover (51) through rolling bearings (9), the lower part of the dehydration shaft (53) is rotatably supported in the bearing bracket (52) through rolling bearings (9), the bearing bracket (52) is axially fitted and installed with the bearing cover (51), the mounting seat (3) is axially fitted and installed with the bearing bracket (52), the dehydration shaft (53) is rotatably installed with the pulsator shaft (54) through the oil-containing bearing (11), and the motor rotor (1) is installed and connected to the outer circle of the lower end of the pulsator shaft (54).

2. The direct drive (DD) motor of claim 1, wherein: The mounting seat (3) and the bearing bracket (52) are connected by screw fastening.

3. The direct drive (DD) motor of claim 1, wherein: The left and right movable supporting rods (10) are arranged on the bearing bracket (52), the outer end of the supporting point of the supporting rod (10) extends beyond the outer diameter of the bearing bracket (52), the other end penetrates through the window of the motor stator (2) and is pressure-connected with the clutch sleeve (56) which is arranged on the outer circle of the dehydration shaft (53) and can be arranged on the dehydration shaft (53).

4. The direct drive (DD) motor of claim 3, wherein: The upper and lower ends of the clutch sleeve (56) are provided with upper and lower engaging teeth, the upper engaging teeth can be engaged with the fixed engaging teeth (57) arranged on the bearing bracket (52) by upward sliding, and the lower engaging teeth can be disengaged from the fixed engaging teeth (57) by downward sliding and are engaged with the movable engaging teeth (55) arranged at the end of the motor rotor (1).

5. The direct drive (DD) motor of claim 1, wherein: The bearing cover (51) and the dehydration shaft (53) are further provided with a large water seal (8), and the bottom of the large water seal (8) is in abutment with the rolling bearing (9).

6. The direct drive (DD) motor according to any one of claims 1 to 5, characterized in that: The outer diameter of the motor rotor (1) is 250-400mm, the slot number of the motor stator (2) is 27, and the rotor stage number is 36.

7. A pulsator washing machine characterized by: The pulsator washing machine is provided with the direct drive DD motor according to any one of claims 1 to 6, the pulsator washing machine comprises an outer barrel (4), the outer barrel (4) is fixedly connected with the bearing cover (51) of the clutch (5), the dehydration shaft (53) is fixedly connected with an inner barrel, and the pulsator shaft (54) penetrates through the outer barrel (4) and is connected with a pulsator.

8. A pulsator washing machine according to claim 7, characterized in that: The outer barrel (4) is further provided with a drainage valve (6) and a drainage motor (7), the drainage motor (7) is connected with the drainage valve (6) through a sleeve ring and a pull rope, and the sleeve ring is sleeved on the supporting rod (10).

9. A horizontal-axis washing machine according to claim 8, characterized in that: The drainage motor (7) is electrified, the pull rope is contracted inwards by winding, the collar is close to the drainage motor (7), the shift lever (10) is deflected at the fulcrum position to separate from the clutch sleeve (56), the clutch sleeve (56) is moved downwards under the action of the elastic element in it, the upper engaging tooth is separated from the fixed engaging tooth (57), the lower engaging tooth is engaged with the movable engaging tooth (55), the motor rotor (1) drives the dehydration shaft (53) and the pulsator shaft (54) to rotate at high speed, and dehydration is realized; when the drainage motor (7) is not electrified, the elastic force of the elastic element on the lower end surface of the shift lever (10) is greater than the elastic force of the elastic element in the clutch sleeve (56), the lower part is separated from the movable engaging tooth (55), the clutch sleeve (56) is moved upwards and engaged with the fixed engaging tooth (57), the clutch sleeve (56) and the dehydration shaft (53) are kept stationary under the limitation of the fixed engaging tooth (57), the motor rotor (1) drives the pulsator shaft (54) and the pulsator to rotate to wash the clothes.

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