A starting structure for reducing noise of a drain pump and a drain pump

Abstract

The utility model discloses a kind of starting structure and drainage pump for reducing the noise of drainage pump, it is related to washing machine drainage pump technical field, including magnetic ring assembly, the magnetic ring assembly is composed of magnetic ring and magnetic ring injection molding body, and the magnetic ring injection molding body is connected in the side of the magnetic ring, the side of the magnetic ring injection molding body is equipped with starting cavity, the inside of the starting cavity is connected with rubber block I, the inside of the starting cavity is connected with shock-absorbing rubber, the inside of the magnetic ring assembly is provided with shaft assembly;The starting structure and drainage pump for reducing the noise of drainage pump, by the setting of rubber block I, rubber block II and shock-absorbing rubber, when impacting, whether it is rubber block I impact shock-absorbing rubber or shock-absorbing rubber impact rubber block II, can guarantee balanced stress and strength requirement, and rubber will produce deformation, so that more energy is absorbed by rubber deformation, so not only can reduce the noise of drainage pump, but also can prolong the service life of drainage pump.

Description

Technical Field

[0001] This utility model relates to the field of washing machine drain pump technology, specifically a starting structure for reducing drain pump noise and a drain pump. Background Technology

[0002] Washing machines have become an essential household appliance. In recent years, consumers have been paying increasing attention to the quality of washing machines, and the noise level of the drain pump, as a key component, has become an important indicator for noise control in washing machines.

[0003] In existing technologies, such as Figures 1-3 As shown, the magnetic ring assembly includes a magnetic ring and a magnetic ring injection molded body, with a magnetic ring boss formed in the inner cavity of the magnetic ring injection molded body; the rotating shaft assembly includes a rotating shaft and a rotating shaft injection molded body; shock-absorbing rubber is provided between the magnetic ring boss and the rotating shaft injection molded body; when the stator assembly is energized, it generates an alternating magnetic field that drives the magnetic ring assembly to rotate in a certain direction, the magnetic ring boss impacts the shock-absorbing rubber, and the shock-absorbing rubber impacts the rotating shaft injection molded body, thereby driving the rotating shaft and impeller to rotate and generate centrifugal force, achieving the effect of draining the washing machine. However, since the magnetic ring injection molded body and the rotating shaft injection molded body are plastic parts, the rigidity of the plastic parts causes more of the impact energy to be converted into sound energy, especially the drain pump in the start-up and semi-water / semi-air state, the self-noise becomes very prominent. Therefore, we propose a start-up structure and a drain pump to reduce the noise of the drain pump. Summary of the Invention

[0004] The purpose of this utility model is to provide a starting structure and a drainage pump that reduces the noise of the drainage pump, in order to solve the problem in the prior art that, since the magnetic ring injection body and the shaft injection body are plastic parts, the rigidity of the plastic parts causes more impact energy to be converted into sound energy, especially when the drainage pump is starting up and in a semi-water, semi-air state, the self-noise becomes very prominent.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a starting structure for reducing the noise of a drainage pump and a drainage pump, including a magnetic ring assembly. The magnetic ring assembly consists of a magnetic ring and a magnetic ring injection molded body, and the magnetic ring injection molded body is connected to one side of the magnetic ring. A starting cavity is formed on one side of the magnetic ring injection molded body. A rubber block I is connected inside the starting cavity. Shock-absorbing rubber is also connected inside the starting cavity. A rotating shaft assembly is provided inside the magnetic ring assembly. The rotating shaft assembly consists of a rotating shaft and a rotating shaft injection molded body. The rotating shaft is connected inside the magnetic ring assembly. The rotating shaft injection molded body is connected to the outside of the rotating shaft. A rubber block II is embedded on the outside of the rotating shaft injection molded body. A magnetic ring cover is connected to one side of the magnetic ring injection molded body.

[0006] Preferably, a first boss is connected to one side of the starting cavity, an annular groove is formed on one side of the first boss, and a second boss is connected to one side of the first boss. The rubber block I, the rubber block II, the rotating shaft injection body and the shock-absorbing rubber are encapsulated in the starting cavity through the magnetic ring cover.

[0007] Preferably, the rubber block I is composed of a middle connecting part I and a wing part I. The wing part I is fixed to both sides of the middle connecting part I and protrudes from the middle connecting part I, so that the rubber block I can be stably engaged with the outside of the second boss.

[0008] Preferably, the intermediate connecting part I is embedded in the annular groove, the inner sidewall of the wing part I is in contact with the two end faces of the second boss, the bottom of the annular groove is in contact with the bottom of the intermediate connecting part I, and the bottom of the wing part I is in contact with one side of the first boss.

[0009] Preferably, the rotating shaft injection body is composed of a hollow columnar body and a starting rib. The starting rib is fixed to the outer wall of the hollow columnar body. A teardrop-shaped disc head is fixed to the bottom of the hollow columnar body, and the teardrop-shaped disc head is fixedly connected to the bottom of the starting rib. A slot is provided on the top of the starting rib, and the rubber block II is embedded in the slot.

[0010] Preferably, the rubber block II is composed of an intermediate connecting part II and a wing part II, with the wing part II fixed to both ends of the intermediate connecting part II, so that the rubber block II can be stably engaged in the slot.

[0011] Preferably, the intermediate connecting part II is embedded in the slot with an interference fit, the inner sidewall of the wing part II is in contact with the outer sides of the starting rib, the outer side of the intermediate connecting part II is in contact with the inner side of the slot, and one side of the teardrop-shaped disc head is in contact with the protruding end face of the wing part II.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, by using rubber block I, rubber block II, and damping rubber, when the stator assembly is energized, it exerts a force on the magnetic ring assembly. Rubber block I impacts the damping rubber, which slides within the starting cavity under thrust until it impacts rubber block II, thereby driving the shaft to rotate. Because rubber block I, rubber block II, and damping rubber are all rubber components and belong to elastic materials, during impact, whether rubber block I impacts the damping rubber or the damping rubber impacts rubber block II, the force balance and strength requirements can be guaranteed. Moreover, the rubber will deform, allowing more energy to be absorbed by the rubber deformation. Therefore, it can not only reduce the noise of the drainage pump but also extend the service life of the drainage pump.

[0014] 2. In this application, since rubber block I is composed of intermediate connecting part I and wing part I, rubber block I can stably wrap the second boss and stably connect rubber block I inside the annular groove. Similarly, rubber block II is composed of intermediate connecting part II and wing part II, so that rubber block II stably wraps the slot and stably connects rubber block II in the slot, making the assembly firm and reliable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing motor assembly structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the prior art rotor assembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the prior art rotor of this utility model;

[0018] Figure 4 This is a schematic diagram of the exploded structure of the starting structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the exploded structure of the magnetic ring assembly and rubber block I of this utility model;

[0020] Figure 6 This is an exploded view of the rotating shaft assembly and rubber block II of this utility model;

[0021] Figure 7 This is a schematic diagram of the planar structure of the starting structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the starting cavity structure of the magnetic ring assembly of this utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the rubber block I of this utility model;

[0024] Figure 10 This is a schematic diagram of the rotating shaft injection molding body structure of this utility model;

[0025] Figure 11 This is a schematic diagram of the structure of the rubber block II of this utility model.

[0026] Labels in the diagram: 100, Magnetic ring; 200, Magnetic ring injection molded body; 210, Rubber block I; 211, Intermediate connecting part I; 212, Wing part I; 220, Shock-absorbing rubber; 230, Starting cavity; 240, First boss; 250, Annular groove; 260, Second boss; 300, Rotating shaft; 310, Rotating shaft injection molded body; 311, Hollow columnar body; 312, Teardrop-shaped disc head; 313, Starting rib; 314, Slot; 320, Rubber block II; 321, Intermediate connecting part II; 322, Wing part II; 400, Magnetic ring cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example: Figures 1-5 As shown, this utility model provides a starting structure for reducing the noise of a drainage pump and a technical solution for the drainage pump, including a magnetic ring assembly. The magnetic ring assembly consists of a magnetic ring 100 and a magnetic ring injection molded body 200, and the magnetic ring injection molded body 200 is connected to one side of the magnetic ring 100. A starting cavity 230 is opened on one side of the magnetic ring injection molded body 200.

[0029] Please see Figures 4-8 The starting cavity 230 is internally connected to a rubber block I 210 and a shock-absorbing rubber 220. A rotating shaft assembly is internally housed within the magnetic ring assembly. The rotating shaft assembly consists of a rotating shaft 300 and a rotating shaft injection-molded body 310. The rotating shaft 300 is connected to the inside of the magnetic ring assembly, and the rotating shaft injection-molded body 310 is connected to the outside of the rotating shaft 300. A rubber block II 320 is embedded on the outside of the rotating shaft injection-molded body 310. A magnetic ring cover 400 is connected to one side of the magnetic ring injection-molded body 200. A first boss 240 is connected to one side of the starting cavity 230. An annular groove 250 is formed on one side of the first boss 240, and a second boss 260 is connected to one side of the first boss 240. The rubber block I 210, rubber block II 320, rotating shaft injection-molded body 310, and shock-absorbing rubber 220 are encapsulated in the starting cavity 230 by the magnetic ring cover 400. In the 0th stage, by using rubber blocks I 210, II 320, and damping rubber 220, when the stator assembly is energized, it exerts a force on the magnetic ring assembly. Rubber block I 210 impacts damping rubber 220, and damping rubber 220 slides within the starting cavity 230 under thrust until it impacts rubber block II 320, thereby driving the rotating shaft 300 to rotate. Because rubber blocks I 210, II 320, and damping rubber 220 are all rubber parts and belong to elastic materials, during impact, whether rubber block I 210 impacts damping rubber 220 or damping rubber 220 impacts rubber block II 320, the force balance and strength requirements can be guaranteed. Moreover, the rubber will deform, so that more energy is absorbed by the rubber deformation. Therefore, it can not only reduce the noise of the drainage pump, but also extend the service life of the drainage pump.

[0030] Please see Figures 9-11The rubber block I210 consists of a central connecting part I211 and a wing part I212. The wing part I212 is fixed to both sides of the central connecting part I211 and protrudes from the central connecting part I211. The central connecting part I211 is embedded in the annular groove 250. The inner sidewall of the wing part I212 is in contact with both ends of the second boss 260. The bottom of the annular groove 250 is in contact with the bottom of the central connecting part I211. The bottom of the wing part I212... The part is attached to one side of the first protrusion 240; the rotating shaft injection body 310 is composed of a hollow columnar body 311 and a starting rib 313. The starting rib 313 is fixed to the outer side wall of the hollow columnar body 311. A teardrop-shaped disc head 312 is fixed to the bottom of the hollow columnar body 311, and the teardrop-shaped disc head 312 is fixedly connected to the bottom of the starting rib 313. A slot 314 is opened at the top of the starting rib 313, and the rubber block II 320 is embedded in the slot 314; rubber Block II 320 consists of a central connecting part II 321 and a wing part II 322. The wing part II 322 is fixed to both ends of the central connecting part II 321. The central connecting part II 321 is embedded in the slot 314 with an interference fit. The inner sidewall of the wing part II 322 is fitted to the outer sides of the starting rib 313, and the outer side of the central connecting part II 321 is fitted to the inner side of the slot 314. One side of the teardrop-shaped disc head 312 is fitted to the protruding end face of the wing part II 322. (The last sentence appears to be incomplete and possibly refers to a rubber block.) I210 is composed of an intermediate connecting part I211 and a wing part I212, which allows the rubber block I210 to stably wrap around the second boss 260 and stably connect the rubber block I210 inside the annular groove 250. Similarly, the rubber block II320 is composed of an intermediate connecting part II321 and a wing part II322, which allows the rubber block II320 to stably wrap around the slot 314 and stably connect the rubber block II320 in the slot 314, making the assembly firm and reliable.

[0031] Specifically: The drainage pump consists of a stator assembly, a housing assembly, and a rotor assembly, wherein the rotor assembly is composed of a magnetic ring assembly, a shaft assembly, and an impeller.

[0032] In use, when the stator assembly is energized, it exerts a force on the magnetic ring assembly. Rubber block I 210 impacts the damping rubber 220, which slides within the starting cavity 230 under thrust until it impacts rubber block II 320, thereby driving the rotating shaft 300 to rotate. Because rubber block I 210, rubber block II 320, and damping rubber 220 are all rubber parts and belong to elastic materials, during impact, whether rubber block I 210 impacts damping rubber 220 or damping rubber 220 impacts rubber block II 320, the force balance and strength requirements can be guaranteed. Moreover, the rubber will deform, so that more energy is absorbed by the rubber deformation. Therefore, it can not only reduce the noise of the drainage pump, but also extend the service life of the drainage pump.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A starting structure for reducing drainage pump noise and a drainage pump, characterized in that: The system includes a magnetic ring assembly, which consists of a magnetic ring (100) and a magnetic ring injection molded body (200). The magnetic ring injection molded body (200) is connected to one side of the magnetic ring (100). A starting cavity (230) is provided on one side of the magnetic ring injection molded body (200). A rubber block I (210) is connected inside the starting cavity (230). A shock-absorbing rubber (220) is connected inside the starting cavity (230). A rotating shaft assembly is provided inside the magnetic ring assembly. The rotating shaft assembly consists of a rotating shaft (300) and a rotating shaft injection molded body (310). The rotating shaft (300) is connected inside the magnetic ring assembly. The rotating shaft injection molded body (310) is connected to the outside of the rotating shaft (300). A rubber block II (320) is embedded on the outside of the rotating shaft injection molded body (310). A magnetic ring cover (400) is connected to one side of the magnetic ring injection molded body (200).

2. The starting structure for reducing drainage pump noise and the drainage pump according to claim 1, characterized in that: A first boss (240) is connected to one side of the starting cavity (230), and an annular groove (250) is provided on one side of the first boss (240). A second boss (260) is connected to one side of the first boss (240). The rubber block I (210), the rubber block II (320), the rotating shaft injection body (310), and the shock-absorbing rubber (220) are encapsulated in the starting cavity (230) through the magnetic ring cover (400).

3. The starting structure for reducing drainage pump noise and the drainage pump according to claim 2, characterized in that: The rubber block I (210) is composed of a middle connecting part I (211) and a wing part I (212). The wing part I (212) is fixed to both sides of the middle connecting part I (211) and the wing part I (212) protrudes from the middle connecting part I (211).

4. The starting structure for reducing drainage pump noise and the drainage pump according to claim 3, characterized in that: The intermediate connecting part I (211) is embedded in the annular groove (250), the inner sidewall of the wing part I (212) is in contact with the two end faces of the second boss (260), the bottom of the annular groove (250) is in contact with the bottom of the intermediate connecting part I (211), and the bottom of the wing part I (212) is in contact with one side of the first boss (240).

5. The starting structure for reducing drainage pump noise and the drainage pump according to claim 1, characterized in that: The rotating shaft injection body (310) is composed of a hollow columnar body (311) and a starting rib (313). The starting rib (313) is fixed to the outer wall of the hollow columnar body (311). A teardrop-shaped pan head (312) is fixed to the bottom of the hollow columnar body (311), and the teardrop-shaped pan head (312) is fixedly connected to the bottom of the starting rib (313). A slot (314) is opened on the top of the starting rib (313), and the rubber block II (320) is embedded in the slot (314).

6. The starting structure for reducing drainage pump noise and the drainage pump according to claim 5, characterized in that: The rubber block II (320) is composed of an intermediate connecting part II (321) and a wing part II (322), with the wing part II (322) fixed to both ends of the intermediate connecting part II (321).

7. The starting structure for reducing drainage pump noise and the drainage pump according to claim 6, characterized in that: The intermediate connecting part II (321) is embedded in the slot (314) with an interference fit. The inner wall of the wing part II (322) is attached to the outer sides of the starting rib (313). The outer side of the intermediate connecting part II (321) is attached to the inner side of the slot (314). One side of the teardrop-shaped disc head (312) is attached to the protruding end face of the wing part II (322).

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