Motor rotor structure for dishwasher pump and dishwasher pump with motor rotor structure

Abstract

The utility model discloses a motor rotor structure for a dish-washing machine pump, and discloses a motor rotor structure for a dish-washing machine pump and a dish-washing machine pump with the same, the motor rotor structure for the dish-washing machine pump comprises a motor shaft, a plastic connecting piece, a rotor assembly and a connecting assembly. And the plastic connecting piece is arranged on the motor shaft. And the plastic connecting piece and the motor shaft rotate synchronously. And the rotor assembly is sleeved on the plastic connecting piece. The rotor assembly drives the plastic connecting piece to rotate so as to drive the motor shaft to rotate. The connecting assembly is connected with the rotor assembly and the plastic connecting piece. According to the connecting assembly, the torque of the rotor assembly is transmitted in the mode that the grooves are formed in the plastic connecting pieces and the protrusions are arranged on the rotor assembly, the thickness of the plastic connecting pieces in the torque transmission direction is increased, the situation that the protrusions arranged on the plastic connecting pieces generate creep deformation is avoided, stable connection of the rotor assembly and the plastic connecting pieces can be guaranteed, and the service life of the rotor assembly is prolonged. And creep deformation of the plastic connecting piece is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher equipment technology, and in particular to a motor rotor structure for a dishwasher pump and a dishwasher pump having the same. Background Technology

[0002] With the development of brushless motors, especially their promotion and application in the field of household appliances, brushless motors have gained high recognition due to their advantages such as high power density and high efficiency. The brushless motor industry has experienced rapid growth in recent years, and many processes still need improvement.

[0003] In existing technologies, the rotor structure of a brushless motor in a dishwasher pump typically includes plastic connectors and a rotor assembly. Torque transmission between the rotor assembly and the plastic connectors generally relies on protrusions on the plastic connectors and slots on the rotor assembly; torque is transmitted through the interaction of these protrusions and slots. The rotor assembly and plastic components are relatively heavy. During motor operation, the rotor's rotational inertia is large, and the insufficient strength of the plastic components can easily lead to creep, resulting in unstable connections between the plastic components and the rotor assembly, thus reducing the motor's lifespan. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a motor rotor structure for a dishwasher pump that can prevent deformation of plastic connectors and improve motor lifespan.

[0005] This utility model also proposes a dishwasher pump having the above-mentioned motor rotor structure for a dishwasher pump.

[0006] According to a first aspect of the present invention, a motor rotor structure for a dishwasher pump includes a motor shaft; a plastic connector disposed on the motor shaft and rotating synchronously with the motor shaft; a rotor assembly sleeved on the plastic connector, the rotor assembly driving the plastic connector to rotate in order to drive the motor shaft to rotate; and a connecting assembly connecting the rotor assembly and the plastic connector.

[0007] The invention offers at least the following advantages: A motor rotor structure for a dishwasher pump includes a motor shaft, a plastic connector, a rotor assembly, and a connecting assembly. The plastic connector is mounted on the motor shaft. The plastic connector rotates synchronously with the motor shaft. The rotor assembly is fitted onto the plastic connector. The rotor assembly drives the plastic connector to rotate, thereby driving the motor shaft to rotate. The connecting assembly connects the rotor assembly and the plastic connector. The connecting assembly transmits the torque of the rotor assembly by creating slots in the plastic connector and protrusions on the rotor assembly. This increases the thickness of the plastic connector in the torque transmission direction, preventing creep caused by the protrusions on the plastic connector, ensuring a stable connection between the rotor assembly and the plastic connector, and preventing creep of the plastic connector.

[0008] According to some embodiments of the present invention, the plastic connector includes a first end, a second end, and a sleeve portion, wherein the first end and the second end are respectively disposed at both ends of the sleeve portion, and the rotor assembly is sleeved on the sleeve portion.

[0009] According to some embodiments of the present invention, the connecting assembly includes a plurality of connecting grooves and a plurality of connecting protrusions. The connecting protrusions are disposed at both ends of the inner ring of the rotor assembly. There are a plurality of connecting protrusions, which are evenly distributed along the circumference of the rotor assembly. A reinforcing portion is provided between the first end and the sleeve portion, and a reinforcing portion is also provided between the second end and the sleeve portion. A plurality of connecting grooves are provided on the reinforcing portion, and the connecting protrusions are accommodated in the connecting grooves.

[0010] According to some embodiments of the present invention, an axial stop component is also included, wherein an axial stop component groove is provided on the first end, and the axial stop component is sleeved on the motor shaft and embedded in the axial stop component groove.

[0011] According to some embodiments of the present invention, a plurality of stirring protrusions are further provided on the first end, and the stirring protrusions rotate with the first end to drive the water flow.

[0012] According to some embodiments of this utility model, the number of stirring protrusions is two.

[0013] According to some embodiments of the present invention, the stirring protrusion is located near the outer periphery of the first end.

[0014] A dishwasher pump according to a second aspect of the present invention includes a motor rotor structure for a dishwasher pump according to the first aspect of the present invention described above.

[0015] It has at least the following beneficial effects: This dishwasher pump has all the beneficial effects brought about by the motor rotor structure for a dishwasher pump mentioned above, which will not be repeated here.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the plastic connector in an embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of the plastic connector in an embodiment of the present invention. Figure 2 ;

[0022] Figure 5 This is a cross-sectional view of the plastic connector according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the rotor assembly in an embodiment of the present invention. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 6This utility model discloses a motor rotor structure for a dishwasher pump, including a motor shaft 10, a plastic connector 20, a rotor assembly 30, and a connecting component 40. The plastic connector 20 is mounted on the motor shaft 10. The plastic connector 20 rotates synchronously with the motor shaft 10. The rotor assembly 30 is sleeved on the plastic connector 20. The rotor assembly 30 drives the plastic connector 20 to rotate, thereby driving the motor shaft 10 to rotate. The connecting component 40 connects the rotor assembly 30 and the plastic connector 20.

[0028] It should be noted that the connecting component 40 of this utility model uses a groove on the plastic connector 20 and a protrusion on the rotor assembly 30 to transmit the torque of the rotor assembly. This increases the thickness of the plastic connector 20 in the direction of torque transmission, avoids creep of the protrusion on the plastic connector 20, and ensures a stable connection between the rotor assembly 30 and the plastic connector 20, preventing creep of the plastic connector 20.

[0029] Reference Figures 1 to 6 The plastic connector 20 includes a first end 21, a second end 22, and a sleeve portion 23. The first end 21 and the second end 22 are respectively disposed at both ends of the sleeve portion 23, and the rotor assembly 30 is sleeved on the sleeve portion 23.

[0030] It is understandable that the circumferential displacement of the rotor assembly 30 can be restricted by the first end 21 and the second end 22.

[0031] Reference Figures 1 to 6 The connecting component 40 includes several connecting grooves 41 and several connecting protrusions 42. The connecting protrusions 42 are disposed at both ends of the inner ring of the rotor assembly 30. There are several connecting protrusions 42, which are evenly distributed along the circumference of the rotor assembly 30. A reinforcing part 24 is provided between the first end 21 and the sleeve part 23, and a reinforcing part 24 is also provided between the second end 22 and the sleeve part 23. Several connecting grooves 41 are provided on the reinforcing part 24, and the connecting protrusions 42 are accommodated in the connecting grooves 41.

[0032] It is understandable that by setting the reinforcing part 24 and the connecting groove 41 on the reinforcing part 24, the strength of the torque transmission position can be greatly increased, avoiding creep of the plastic connector 20 due to insufficient strength during torque transmission, and improving the service life of the equipment.

[0033] Reference Figures 1 to 6 It also includes an axial stop component 50, with an axial stop component groove 211 provided on the first end 21. The axial stop component 50 is sleeved on the motor shaft 10 and embedded in the axial stop component groove 211.

[0034] Understandably, the axial stop assembly 50 can cooperate with the bearing on the motor shaft 10 to prevent the plastic connector 20 from moving axially.

[0035] Reference Figures 1 to 6 The first end 21 is also provided with a number of stirring protrusions 212, which rotate with the first end 21 to drive the water flow.

[0036] Understandably, the stirring protrusion 212, as the plastic connector 20 rotates, will cause the water to rotate effectively, discharging scale and sediment that are not easily discharged.

[0037] It is worth noting that in some embodiments of this utility model, the number of stirring protrusions 212 is two.

[0038] It is worth noting that in some embodiments of this utility model, the stirring protrusion 212 is located near the outer periphery of the first end 21.

[0039] Understandably, the closer the stirring protrusion 212 is to the outer periphery, the longer the path it travels in one revolution, the faster its linear velocity, and the better the effect of the water flow it generates.

[0040] A dishwasher pump according to a second aspect of this utility model includes a motor rotor structure for a dishwasher pump according to the first aspect embodiment. The dishwasher pump possesses all the beneficial effects of the aforementioned motor rotor structure for a dishwasher pump, which will not be repeated here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A motor rotor structure for a dishwasher pump, characterized in that, include: Motor shaft (10); A plastic connector (20) is disposed on the motor shaft (10), and the plastic connector (20) rotates synchronously with the motor shaft (10); Rotor assembly (30), which is sleeved on the plastic connector (20), drives the plastic connector (20) to rotate so as to drive the motor shaft (10) to rotate; A connecting assembly (40) connects the rotor assembly (30) and the plastic connector (20).

2. The motor rotor structure for a dishwasher pump according to claim 1, characterized in that, The plastic connector (20) includes a first end (21), a second end (22) and a sleeve (23). The first end (21) and the second end (22) are respectively disposed at both ends of the sleeve (23), and the rotor assembly (30) is sleeved on the sleeve (23).

3. The motor rotor structure for a dishwasher pump according to claim 2, characterized in that, The connecting assembly (40) includes a plurality of connecting grooves (41) and a plurality of connecting protrusions (42). The connecting protrusions (42) are disposed at both ends of the inner ring of the rotor assembly (30). There are a plurality of connecting protrusions (42), which are evenly distributed along the circumference of the rotor assembly (30). A reinforcing part (24) is provided between the first end (21) and the sleeve part (23). A reinforcing part (24) is also provided between the second end (22) and the sleeve part (23). A plurality of connecting grooves (41) are provided on the reinforcing part (24), and the connecting protrusions (42) are accommodated in the connecting grooves (41).

4. The motor rotor structure for a dishwasher pump according to claim 2, characterized in that, It also includes an axial stop assembly (50), on which an axial stop assembly groove (211) is provided. The axial stop assembly (50) is sleeved on the motor shaft (10) and embedded in the axial stop assembly groove (211).

5. The motor rotor structure for a dishwasher pump according to claim 2, characterized in that, The first end (21) is also provided with a plurality of stirring protrusions (212), which rotate with the first end (21) to drive the water flow.

6. The motor rotor structure for a dishwasher pump according to claim 5, characterized in that, The number of stirring protrusions (212) is two.

7. The motor rotor structure for a dishwasher pump according to claim 5, characterized in that, The stirring protrusion (212) is located near the outer periphery of the first end (21).

8. A dishwasher pump, characterized in that, The motor rotor structure for a dishwasher pump described in any one of claims 1 to 7 is applied.

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