Direct-driven ordinary clutch and washing machine thereof

Abstract

The utility model provides a direct-drive ordinary clutch and a washing machine thereof, belongs to the technical field of clutches, overcomes the technical defects that an existing ordinary clutch is not compact enough in structure, low in transmission efficiency and poor in stability, comprises an impeller shaft, and is characterized in that the impeller shaft rotatably penetrates through the clutch; the lower end of the impeller shaft is connected with a motor rotor, a dewatering shaft is rotatably arranged on the periphery of the impeller shaft through an oil-retaining bearing, and the dewatering shaft is installed in a bearing support in a one-way rotating mode through a rolling bearing, the product is provided with the impeller shaft and the dewatering shaft which penetrate through the clutch, the structure is compact, the transmission efficiency is high, and the stability is good; the following rotation of the dewatering shaft during washing can be effectively controlled, and the rotation efficiency of the impeller shaft is improved; the impeller shaft is directly connected with the motor rotor, energy loss is small, and transmission efficiency is high; the dewatering shaft is good in installation and connection stability and high in concentricity consistency, and the service life of the clutch can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutches, and particularly relates to a direct-drive common clutch and a washing machine thereof. Background Art

[0002] In the current washing machine technology field, pulsator washing machines are widely popular due to their simple structure and convenient operation. However, as consumers' demands for washing effects, energy efficiency and diversified washing modes continue to increase, traditional pulsator washing machines have gradually revealed some technical limitations. In particular, in the design of ordinary washing machines, how to effectively save costs and efficiently and stably realize the original functions of the pulsator and washing tub has become a technical problem that needs to be solved urgently.

[0003] At present, most ordinary washing machines on the market use a reduction gear system to achieve synchronous or independent movement of the impeller and the washing tub. The reduction gear system has many parts, a complex structure, low transmission efficiency, and is prone to energy loss; and although the dual-motor structure can achieve more precise synchronization or independent control, it is costly and increases the complexity and failure rate of the whole machine. In addition, some ordinary washing machines try to achieve this goal by improving the clutch structure, but there are generally problems such as insufficient compactness, low transmission efficiency, and poor stability. Utility Model Content

[0004] The purpose of the utility model is to provide a direct-drive common clutch and a washing machine thereof, so as to solve the above-mentioned technical problems existing in the prior art.

[0005] According to the above purpose, the basic technical scheme of the utility model is: a direct-drive ordinary clutch, including a impeller shaft connected to the impeller of the washing machine, characterized in that: the impeller shaft can rotatably pass through the clutch, and its lower end is connected to the motor rotor, the outer periphery of the impeller shaft is rotatably provided with a dehydration shaft through an oil-containing bearing, the dehydration shaft is rotatably installed in a bearing support through a rolling bearing, the bearing support is fixed to a mounting plate rotatably supported by the dehydration shaft through a rolling bearing, and the end of the dehydration shaft away from the mounting plate is A clutch sleeve is provided on the outside of the wheel axle, and a clutch spring installed in a ratchet is held on the outer circle of the clutch sleeve and the dehydration shaft. A shift fork is provided on the ratchet in a contact manner. When the shift fork cuts into the ratchet, the ratchet rotates a certain angle, driving the clutch spring to rotate a certain angle to disengage the clutch spring from the clutch sleeve, and the impeller shaft and the dehydration shaft are separated and rotated independently; when the shift fork disengages from the ratchet, the clutch spring installed in the ratchet is held tightly to the surface of the clutch sleeve under the action of its own rotational elastic force, and the impeller shaft and the dehydration shaft are combined as a whole and rotate together.

[0006] Further, a brake wheel is provided on the outer circumference of the dehydration shaft. A brake band is also held around the surface of the brake wheel, with one end fixedly installed on the bearing support, and the other end of the brake band is connected to a brake lever movably installed on the bearing support.

[0007] Furthermore, one end of the brake wheel is constricted and the other end flares outwards. Its constricted end is firmly connected to the dehydration shaft by interference press-fitting. Its flared end is cylindrical, and the brake band is sleeved on its cylindrical surface.

[0008] Furthermore, the brake lever is linked and connected to the control end of the fork.

[0009] Furthermore, the rolling bearing between the dehydration shaft and the bearing support is a one-way rotating bearing, and its rotatable direction during installation is the same as the direction during the dehydration operation of the washing machine.

[0010] More specifically, the tensioning and installation direction of the brake band is opposite to the one-way rotation direction of the rolling bearing.

[0011] Further, a motor stator is concentrically sleeved inside the motor rotor, and the motor stator can provide a rotating magnetic field for the rotation of the motor rotor.

[0012] Furthermore, the motor stator is installed on the outer end face of the bearing support.

[0013] A washing machine, characterized in that: the above-mentioned direct-drive ordinary clutch is provided on the washing machine.

[0014] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:

[0015] 1. The product of the present utility model is provided with a pulsator shaft and a dehydration shaft passing through the clutch, with a compact structure, high transmission efficiency, and good stability;

[0016] 2. The product of the present utility model is provided with a brake wheel, which can cooperate with a one-way bearing and act on the dehydration shaft together, effectively controlling the rotation of the dehydration shaft during washing and improving the rotation efficiency of the pulsator shaft;

[0017] 3. The pulsator shaft of the product of the present utility model is directly connected to the motor rotor, with small energy loss and high transmission efficiency;

[0018] 4. The product of the present utility model adopts a dehydration shaft that penetrates up and down, with good installation and connection stability and high concentricity consistency, which can effectively improve the service life of the clutch. Description of the Drawings

[0019] Figure 1 It is a front view structural schematic diagram of the product of the present utility model;

[0020] Figure 2 It is a top view structural diagram of the product of the utility model;

[0021] Figure 3 It is a left-side structural schematic diagram of the utility model product;

[0022] Figure 4 It is a rear view structural diagram of the utility model product;

[0023] Figure 5 for Figure 4 Schematic diagram of CC cross-sectional structure;

[0024] In the figure: 1. impeller shaft; 2. dehydration shaft; 3. large water seal; 4. rolling bearing; 5. mounting plate; 6. brake wheel; 7. brake rod; 8. brake belt; 9. bearing support; 10. shift fork; 11. ratchet; 12. clutch spring; 13. motor stator; 14. motor rotor; 15. clutch sleeve; 16. oil-containing bearing. DETAILED DESCRIPTION

[0025] Combination Figures 1 to 5 , is a schematic diagram of the principle structure of a direct-drive common clutch and a washing machine embodiment of the utility model. The direct-drive common clutch includes a pulsator shaft 1 connected to the pulsator of the washing machine. The pulsator shaft 1 can rotatably penetrate the clutch, and its lower end is connected to the motor rotor 14. The motor stator 13 is concentrically sleeved in the motor rotor 14. The motor stator 13 can provide a rotating magnetic field for the rotation of the motor rotor 14. The motor stator 13 is installed on the outer end surface of the bearing support 9. The outer periphery of the pulsator shaft 1 is rotatably provided with a dehydration shaft 2 through an oil-containing bearing 16. The dehydration shaft 2 is unidirectionally rotatably installed in the bearing support 9 through a rolling bearing 4. The bearing support 9 is fixed to the dehydration shaft 2 through the rolling bearing 4. On the rotatably supported mounting plate 5, a clutch sleeve 15 is provided on the outside of the impeller shaft 1 at the end of the dehydration shaft 2 away from the mounting plate 5. The clutch sleeve 15 and the outer circle of the dehydration shaft 2 are sleeved with a clutch spring 12 installed in the ratchet 11. The ratchet 11 is provided with a contact-type shift fork 10. When the shift fork 10 cuts into the ratchet 11, the ratchet 11 rotates a certain angle, driving the clutch spring 12 to rotate a certain angle to disengage the clutch spring 12 from the clutch sleeve 15, and the impeller shaft 1 and the dehydration shaft 2 are separated and rotated independently; when the shift fork 10 is disengaged from the ratchet 11, the clutch spring 12 installed in the ratchet 11 is tightly attached to the surface of the clutch sleeve 15 under the action of its own rotational elastic force, and the impeller shaft 1 and the dehydration shaft 2 are combined as a whole and rotate together.

[0026] Preferably, the rolling bearing 4 between the dehydration shaft 2 and the bearing support 9 is a one-way rotating bearing, and its rotatable direction during installation is consistent with the direction of the washing machine during dehydration operation. A brake wheel 6 is also provided on the outer circle of the dehydration shaft 2, and the surface of the brake wheel 6 also embraces a brake belt 8 with one end fixedly installed on the bearing support 9. The tensioning installation direction of the brake belt 8 is opposite to the one-way rotation direction of the rolling bearing 4. The other end of the brake belt 8 is connected to a brake rod 7 movably installed on the bearing support 9, and the brake rod 7 is linked to the control end of the fork 10. One end of the brake wheel 6 is contracted and the other end is expanded outward. The contracted end is firmly connected to the dehydration shaft 2 by an interference fit, and the expanded end is cylindrical, and the brake belt 8 is sleeved on its cylindrical surface.

[0027] During assembly, install the bearing support 9 and the mounting plate 5 respectively, and install the rolling bearing 4. Pay attention to the installation direction of the one-way bearing. The brake belt 8, brake rod 7 and fork 10 must be installed on the bearing support 9 first. Press the oil-containing bearing 16 into the inner holes at the upper and lower ends of the dehydration shaft 2, and then press the dehydration shaft 2 into the mounting plate 5 with the rolling bearing 4. Note that before pressing in, first put the large water seal 3 on the outer circle of the dehydration shaft 2. After pressing in, the outer diameter of the large water seal 3 is also pressed into the inner hole of the shaft mounting plate 5, and then install the impeller shaft 1 in the dehydration shaft 2. Pay attention to whether the impeller shaft 1 rotates flexibly, and then press the brake wheel 6 on the outer circle of the dehydration shaft 2, and then press it into the bearing support 9 with the one-way rolling bearing 4, tighten the bearing support 9 and the mounting plate 5 with screws to form an assembly, put the mounting plate 5 assembly upside down into the tooling, and install the motor The stator 13 is installed on the bearing support 9, and the clutch spring 12 installed in the ratchet 11 is inserted on the outer circle of the dehydration shaft 2. Then the control end of the clutch spring 12 is loosened, and the clutch sleeve 15 is inserted along the impeller shaft 1. The fork 10 in contact with the ratchet 11 is adjusted. When the fork 10 cuts into the ratchet 11, the ratchet 11 rotates a certain angle, driving the clutch spring 12 to rotate a certain angle to disengage the clutch spring 12 from the clutch sleeve 15, and the impeller shaft 1 and the dehydration shaft 2 are separated and rotated separately; when the fork 10 is separated from the ratchet 11, the clutch spring 12 installed in the ratchet 11 is tightly attached to the surface of the clutch sleeve 15 under the action of its own rotational elastic force, and the impeller shaft 1 and the dehydration shaft 2 are combined as a whole and rotate together, and then the motor rotor 14 is installed on the impeller shaft 1, and the nut is tightened.

[0028] During the washing working state, in the washing machine provided with the above-mentioned direct-drive ordinary type clutch, the dehydration shaft 2 is kept stationary under the action of the bidirectional locking force of the one-way rolling bearing 4 in the bearing support 9 and the brake belt 8, the fork 10 is cut into the ratchet 11, the clutch spring 12 is in a loosened state, and a gap is maintained between the clutch sleeve 15 movably mounted on the impeller shaft 1 and the clutch spring 12. The impeller shaft 1 rotates bidirectionally driven by the power of the motor rotor 14, acting on the impeller of the washing machine connected to the impeller shaft 1 to wash clothes.

[0029] In the dehydration condition, in the washing machine provided with the above-mentioned direct-drive ordinary clutch, when the signal of the washing machine control board is activated, it drives the traction motor to pull the brake lever 7. The brake lever 7 rotates, loosening the brake band 8 that holds the brake wheel 6 tightly. At the same time, it drives the fork 10 to disengage from the ratchet 11. The internal clutch spring 12 of the ratchet 11 loses the rotational force of the ratchet 11. Under the action of its own tightening force, the clutch spring 12 holds the clutch sleeve 15 tightly. In this way, the dehydration shaft 2 and the agitator shaft 1 rotate at a high speed in one direction together. The dehydration tub connected to the dehydration shaft 2 rotates together with the agitator, driving the clothes in the dehydration tub to rotate together for centrifugal dehydration.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0031] Although terms such as 1. agitator shaft; 2. dehydration shaft; 3. large water seal; 4. rolling bearing; 5. mounting plate; 6. brake wheel; 7. brake lever; 8. brake band; 9. bearing support; 10. fork; 11. ratchet; 12. clutch spring; 13. motor stator; 14. motor rotor; 15. clutch sleeve; 16. oil-impregnated bearing are used more in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0032] The above introduction to the direct-drive ordinary clutch provided by the present invention uses specific preferred embodiments to elaborate on the principle and implementation manner of the present invention. These embodiments are only used to help understand the principle and core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the design idea of the present invention, the implementation schemes in the above embodiments can be further combined or replaced, and several improvements and modifications can be made to the present invention. These improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A direct-drive ordinary clutch, comprising a pulley shaft (1) connected to the pulley of the washing machine at the upper part, characterized in that: The impeller shaft (1) is rotatably inserted into the clutch, and its lower end is connected to the motor rotor (14). The outer periphery of the impeller shaft (1) is rotatably provided with a dehydration shaft (2) through an oil-containing bearing (16). The dehydration shaft (2) is unidirectionally rotatably installed in a bearing support (9) through a rolling bearing (4). The bearing support (9) is fixed to a mounting plate (5) on which the dehydration shaft (2) is rotatably supported through a rolling bearing (4). A clutch sleeve (15) is provided on the outside of the impeller shaft (1) at the end of the dehydration shaft (2) away from the mounting plate (5). The clutch sleeve (15) and the outer circumference of the dehydration shaft (2) are mounted on a ratchet (1). 1), a clutch spring (12) is provided in the ratchet wheel (11), and a shift fork (10) is contactably provided on the ratchet wheel (11). When the shift fork (10) cuts into the ratchet wheel (11), the ratchet wheel (11) rotates a certain angle, driving the clutch spring (12) to rotate a certain angle to separate the clutch spring (12) from the clutch sleeve (15), and the impeller shaft (1) and the dehydration shaft (2) are separated and rotated independently; when the shift fork (10) is separated from the ratchet wheel (11), the clutch spring (12) installed in the ratchet wheel (11) is tightly attached to the surface of the clutch sleeve (15) under the action of its own rotational elastic force, and the impeller shaft (1) and the dehydration shaft (2) are combined into one body and rotate together.

2. The direct drive ordinary clutch according to claim 1, characterized in that: A brake wheel (6) is also provided on the outer circle of the dehydration shaft (2), and the surface of the brake wheel (6) also embraces a brake belt (8) with one end fixedly mounted on the bearing support (9), and the other end of the brake belt (8) is connected to a brake rod (7) movably mounted on the bearing support (9).

3. The direct-drive ordinary clutch according to claim 2, wherein: The brake wheel (6) has one end that is contracted and the other end that is expanded outwards, and the contracted end is firmly connected to the dehydration shaft (2) through interference fit, and the expanded end is cylindrical, and the brake belt (8) is sleeved on its cylindrical surface.

4. The direct-drive general clutch according to claim 2, wherein: The brake rod (7) is linked to the control end of the shift fork (10).

5. The direct-drive general clutch according to claim 2, wherein: The rolling bearing (4) between the dehydration shaft (2) and the bearing support (9) is a one-way rotating bearing, and its rotatable direction during installation is consistent with the direction during dehydration operation of the washing machine.

6. The direct-drive general clutch according to claim 5, wherein: The tightening installation direction of the brake band (8) is opposite to the unidirectional rotation direction of the rolling bearing (4).

7. The direct-drive ordinary clutch according to claim 1, wherein: A motor stator (13) is concentrically sleeved inside the motor rotor (14), and the motor stator (13) can provide a rotating magnetic field for the rotation of the motor rotor (14).

8. The direct-drive general clutch according to claim 7, wherein: The motor stator (13) is mounted on the outer end surface of the bearing support (9).

9. A washing machine, characterized in that: The washing machine is provided with a direct-drive common clutch according to any one of claims 1 to 8.

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