CN117394577A

CN117394577A - Waterproof motor

Info

Publication number: CN117394577A
Application number: CN202311386783.7A
Authority: CN
Inventors: 钟平先; 匡纲要; 余银兵
Original assignee: China Drive Motors Shenzhen Co ltd
Current assignee: China Drive Motors Shenzhen Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-01-12

Abstract

A waterproof motor relates to the technical field of motor waterproofing. It comprises the following steps: the rotor assembly comprises a shell assembly, a stator assembly, a rotor assembly, a movable impeller and a waterproof meson; the stator assembly is arranged in the shell assembly; the rotor assembly penetrates through the center of the stator assembly, and the output end of the rotating shaft of the rotor assembly extends out of the stator assembly; the movable impeller is fixedly sleeved at the output end of the rotating shaft; the waterproof meson is fixedly sleeved on the rotating shaft and positioned between the stator assembly and the movable impeller; the periphery of the waterproof meson is provided with a plurality of blades. By adopting the technical scheme, the waterproof device has the advantages of simple structure and outstanding waterproof effect.

Description

Waterproof motor

Technical Field

The invention relates to the technical field of motor waterproofing, in particular to a waterproof motor.

Background

The dust collector is a cleaning electric tool commonly used in families, because the working environment of a motor of the dust collector is always in dust, and in the application field of the motor of the dust collector, the dust collector integrating washing, dragging and sucking is more and more popular, so that the internal environment is moist, a good waterproof motor is important, the existing motor cannot meet the requirement at all, and moisture can permeate into the motor from a gap at a motor shaft hole, so that the motor is short-circuited.

Based on this, chinese patent publication No. CN216981655U discloses a wet and dry motor applied to a vacuum cleaner, in the process of using the motor, the sucked air may be doped with part of water vapor, the sucked water vapor is condensed on the upper end surfaces of the side plate and the connecting plate, and is thrown into the inner cavity under the action of centrifugal force, and then leaks out of the casing along the water leakage groove, so as to prevent the water from penetrating into the casing along the gap between the junction of the rotating shaft and the shaft hole to cause short circuit of the motor, part of the water vapor passes through the gap between the inner wall of the side plate and the inner wall of the groove, and is absorbed by the sponge gasket, further enhancing the waterproof effect, greatly reducing friction with the inner wall of the side plate 7 due to the fluffy and porous sponge, and reducing the energy loss of the motor.

Although the waterproof effect can be enhanced to a certain extent, the structure is complex, the waterproof effect is still slightly worse, and improvement is urgently needed.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the invention provides a waterproof motor which has the advantages of simple structure and outstanding waterproof effect.

In order to achieve the above purpose, the invention adopts the following technical scheme: a waterproof motor comprising:

a housing assembly;

the stator assembly is arranged in the shell assembly;

the rotor assembly penetrates through the center of the stator assembly, and the output end of the rotating shaft of the rotor assembly extends out of the stator assembly; and

the movable impeller is fixedly sleeved at the output end of the rotating shaft;

the waterproof motor further includes: the waterproof meson is fixedly sleeved on the rotating shaft and positioned between the stator assembly and the movable impeller;

the periphery of the waterproof meson is provided with a plurality of blades.

The invention further provides that the waterproof meson abuts against the movable impeller.

The invention is further provided with the rotating shaft fixedly sleeved with: one end of the rotor assembly is abutted against the bearing of the waterproof meson, and the other side of the waterproof meson is abutted against the movable impeller.

The invention further provides for the housing assembly to comprise: a housing; the casing includes: a columnar surrounding wall and a baffle plate arranged at one end of the surrounding wall close to the waterproof meson; the baffle is provided with a first through hole for the rotating shaft to pass through;

the stator assembly and the rotor assembly are mounted in a space defined by the surrounding wall and the baffle,

the waterproof meson is close to the middle part of one side of baffle is provided with first boss, first boss inserts and locates in the first through-hole.

The invention further provides that a tortuous channel for waterproofing is formed between the waterproof meson and the casing.

The invention is further provided that the tortuous path comprises: a first tortuous path; the waterproof meson is close to one side of baffle is provided with and is located the recess of first boss week side, the baffle is close to one side of waterproof meson is provided with and is located the second boss of first through-hole week side, the second boss is inserted and is located in the recess, the recess with form between the second boss first tortuous passageway.

The invention is further arranged that the tortuous path further comprises: a second tortuous path; the waterproof meson is characterized in that a step structure is arranged between the groove and the first boss, a convex ring is arranged on the inner wall of the first through hole, and a second tortuous channel is formed between the step structure and the convex ring.

The invention further provides that the housing further comprises: the air duct plate is connected between the frame body and the surrounding wall and used for separating the space between the frame body and the surrounding wall into a plurality of air ducts.

The invention further provides that the housing assembly further comprises: the fan cover component is arranged on the lower side of the shell; the movable impeller is arranged in a space defined by the shell and the fan housing component; the lower side of the fan housing component is provided with a second through hole for external air to enter the movable impeller.

The invention further provides that the housing assembly further comprises: the end cover is arranged on the upper side of the shell; and a dust cover assembled to an upper side of the end cover; the stator assembly and the rotor assembly are arranged in a space defined by the casing and the end cover, and a circuit board electrically connected with the stator assembly is arranged in the space defined by the end cover and the dust cover.

After the technical scheme is adopted, the invention has the beneficial effects that:

according to the invention, the waterproof meson positioned between the stator assembly and the movable impeller is fixedly sleeved on the rotating shaft, and the plurality of blades are arranged on the periphery of the waterproof meson, so that when the waterproof motor works, the waterproof meson rotates at a high speed along with the rotating shaft, the blades on the waterproof meson can apply work to air, and a centrifugal force is generated to offset the pressure intensity in the cavity of the shell assembly. Under the action of centrifugal force, water vapor is prevented from being outside, and the inside of the waterproof motor is protected from being corroded by sewage.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of another view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is an enlarged view at a in fig. 3;

FIG. 5 is a cross-sectional view of the housing and waterproof meson;

fig. 6 is a schematic structural view of a waterproof meson;

FIG. 7 is a schematic structural view of the housing;

FIG. 8 is a schematic view of the structure of the chassis from another view;

fig. 9 is an exploded schematic view of the structure of the present invention.

Reference numerals illustrate: 100. a housing assembly; 110. a housing; 111. a surrounding wall; 112. a baffle; 113. a frame body; 114. an air duct plate; 115. a first through hole; 116. an edge; 117. a bearing chamber; 118. a second boss; 119. a convex ring; 120. a fan housing assembly; 121. a second through hole; 130. an end cap; 140. a dust cover;

200. a stator assembly;

300. a rotor assembly; 310. a rotating shaft;

400. a moving impeller;

500. waterproof meson; 510. a blade; 520. a first boss; 530. a groove; 540. a step structure;

600. a circuit board;

700. and (3) a bearing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and those skilled in the art can make modifications to the present embodiment which do not contribute to the invention as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.

The present embodiment relates to a waterproof motor, as shown in fig. 1-2 and 9, including: the housing assembly 100, the stator assembly 200, the rotor assembly 300, the rotor wheel 400, and the waterproof meson 500.

As shown in fig. 3-6, wherein the stator assembly 200 is disposed within the housing assembly 100; the rotor assembly 300 penetrates through the center of the stator assembly 200, and the output end of the rotating shaft 310 of the rotor assembly 300 extends out of the stator assembly 200; the movable impeller 400 is fixedly sleeved at the output end of the rotating shaft 310. The waterproof meson 500 is fixedly sleeved on the rotating shaft 310 and is located between the stator assembly 200 and the movable impeller 400, and a plurality of blades 510 are arranged on the periphery of the waterproof meson 500.

When the impeller 400 is in operation, the pressure in the dust collection cavity of the housing assembly 100 is high, and part of water vapor enters the waterproof motor due to the pressure difference. Through fixed cover be equipped with in pivot 310 be located stator module 200 and movable vane 400 between waterproof meson 500, and waterproof meson 500's week side is provided with a plurality of blades 510 to this waterproof motor during operation, waterproof meson 500 along with pivot 310 high-speed rotation, the blade 510 on waterproof meson 500 can do work to the air, produces a centrifugal force and offsets the pressure in the cavity of casing module 100. Under the action of centrifugal force, water vapor is prevented from being outside, and the inside of the waterproof motor is protected from being corroded by sewage.

In this embodiment, since the space is limited, as shown in fig. 6, the blades 510 on the circumference side of the waterproof meson 500 have a straight plate shape, and in other embodiments, the blades 510 of the waterproof meson 500 may have an arc shape, and the direction of the arc is not limited herein.

In particular, in the present embodiment, as shown in fig. 1, 3 and 9, the housing assembly 100 includes: a housing 110, a fan housing assembly 120, an end cap 130, and a dust cap 140.

In other embodiments, the housing assembly 100 may also be comprised of other individual housing components.

The fan housing assembly 120 is disposed at the lower side of the casing 110, and the movable impeller 400 is installed in a space defined by the casing 110 and the fan housing assembly 120; the end cover 130 is disposed on the upper side of the casing 110, and the stator assembly 200 and the rotor assembly 300 are installed in the space defined by the casing 110 and the end cover 130; the dust cap 140 is mounted on the top of the end cap 130, and the space defined by the end cap 130 and the dust cap 140 accommodates a circuit board 600 electrically connected to the stator assembly 200.

Specifically, as shown in fig. 5, 7 and 8, the casing 110 includes: the waterproof meson comprises a columnar enclosing wall 111, a baffle 112 arranged at one end of the enclosing wall 111 near the waterproof meson 500, a frame 113 arranged outside the enclosing wall 111, and a plurality of air duct plates 114 connected between the frame 113 and the enclosing wall 111. The duct plate 114 divides the space between the frame 113 and the surrounding wall 111 into a plurality of ducts. The baffle 112 is provided with a first through hole 115 through which the rotation shaft 310 passes. More specifically, in the present embodiment, the surrounding wall 111 is higher than the frame 113, i.e., the surrounding wall 111 protrudes from the frame 113 outward from the end away from the baffle 112.

As shown in fig. 2, in the present embodiment, the fan housing assembly 120 is also in a column shape, and the lower side thereof is provided with a second through hole 121 for the external air to enter the impeller 400. As shown in fig. 5, 7 and 8, the frame 113 of the cabinet 110 is provided with an edge 116 extending outward near the upper portion, and the cabinet 110 is mounted on the fan housing assembly 120 by the edge 116. That is, the cabinet 110 is mostly located inside the hood assembly 120, but the upper end portion protrudes from the hood assembly 120.

As shown in fig. 1, 2 and 9, in the present embodiment, the end cap 130 is in a truncated cone shape, and a small mesa is connected to the upper end of the surrounding wall 111, and a large mesa is connected to the lower end of the dust cap 140. The dust cap 140 is locked above the end cap 130 by a locking member such as a screw, and functions as dust.

As a preferred solution, as shown in fig. 3-5, the rotating shaft 310 is fixedly sleeved with: one end abuts the rotor assembly 300 and the other end abuts the bearing 700 of the waterproof meson 500. The baffle 112 of the housing 110 is provided with a bearing 700 chamber 117 above the first through hole 115, and the bearing 700 is installed in the bearing 700 chamber 117. The waterproof meson 500 is matched with the rotating shaft 310; one end face is pressed on the inner ring of the bearing 700, and the other end is contacted with the movable impeller 400.

In this embodiment, as shown in fig. 5 to 6, a first boss 520 is disposed in the middle of a side of the waterproof meson 500 near the baffle 112, and the first boss 520 is inserted into the first through hole 115. By being provided with the first boss 520, the second waterproof effect is achieved. Even if the first heavy waterproof part of the water vapor channel exists (the blades 510 on the waterproof meson 500 can apply work to the air, a centrifugal force is generated to offset the pressure in the cavity of the housing assembly 100, the water vapor is prevented from outside under the action of the centrifugal force), the water vapor passes through the impeller 400 to reach the periphery of the waterproof meson 500, and the water vapor also needs to climb up through the first boss 520 to possibly enter the waterproof motor, so that the inside of the waterproof motor such as the stator assembly 200 and the rotor assembly 300 is effectively protected from being corroded by sewage.

In order to further enhance the waterproof effect, a tortuous path for waterproofing is formed between the waterproof meson 500 and the casing 110 on the basis of providing the boss waterproofing.

Specifically, as shown in fig. 5-8, the tortuous path includes: a first tortuous path. The side of the waterproof meson 500, which is close to the baffle 112, is provided with a groove 530 located at the circumferential side of the first boss 520, the side of the baffle 112, which is close to the waterproof meson 500, is provided with a second boss 118 located at the circumferential side of the first through hole 115, the second boss 118 is inserted into the groove 530, and a first tortuous path is formed between the groove 530 and the second boss 118.

As also shown in fig. 5-8, the tortuous path further includes: a second tortuous path. A step structure 540 is arranged between the groove 530 and the first boss 520 on the waterproof meson 500, a convex ring 119 is arranged on the inner wall of the first through hole 115, and a second tortuous channel is formed between the step structure 540 and the convex ring 119.

That is, the water vapor passes through the impeller 400 to come to the periphery of the waterproof meson 500, and needs to climb through the blade 510, at this time, the front part is blocked by the second boss 118, the water vapor can only fall into the groove 530, and after bypassing the second boss 118 from the groove 530, the water vapor is blocked by the step structure 540, the water vapor can only climb along the step structure 540, and when climbing, the water vapor is blocked by the convex ring 119 above, cannot directly go upwards, and is then driven to the above of the step structure 540, and finally, the first boss 520 is blocked, so that the waterproof effect is very outstanding.

The invention has the advantages that:

1. the adopted waterproof meson 500 rotates together with the rotating shaft 310, and the non-contact waterproof structure is adopted, so that the waterproof effect is not influenced along with the influence of the service time, and the service lives of the bearing 700, the stator assembly 200, the rotor assembly 300 and the like are prolonged.

2. The design of the blades 510 is added on the waterproof meson 500, the centrifugal force generated by the blades 510 is utilized to offset the pressure in the cavity of the dust collection shell assembly 100, so that the corrosion of water vapor to the bearing 700 is further avoided, and the service lives of the bearing 700, the stator assembly 200, the rotor assembly 300 and the like are prolonged.

3. The waterproof meson 500 can be directly molded, has a simple structure, is beneficial to production automation and has low cost.

The above description is only for the purpose of illustrating the technical solution of the present invention and not for the purpose of limiting the same, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A waterproof motor comprising:

a housing assembly (100);

a stator assembly (200) disposed within the housing assembly (100);

the rotor assembly (300) is arranged in the center of the stator assembly (200) in a penetrating way, and the output end of the rotating shaft (310) of the rotor assembly (300) extends out of the stator assembly (200); and

a movable impeller (400) fixedly sleeved at the output end of the rotating shaft (310);

the waterproof motor is characterized by further comprising: a waterproof meson (500) fixedly sleeved on the rotating shaft (310) and positioned between the stator assembly (200) and the movable impeller (400);

the periphery of the waterproof meson (500) is provided with a plurality of blades (510).

2. The waterproof motor according to claim 1, characterized in that the waterproof meson (500) abuts the rotor (400).

3. The waterproof motor according to claim 2, wherein the rotating shaft (310) is fixedly sleeved with: one end of the waterproof meson is abutted against the bearing (700) of the rotor assembly (300), the other end of the waterproof meson is abutted against the rotor (500), and the other side of the waterproof meson (500) is abutted against the movable impeller (400).

4. The waterproof motor according to claim 2, characterized in that the housing assembly (100) comprises: a housing (110); the housing (110) includes: a columnar surrounding wall (111), and a baffle (112) arranged at one end of the surrounding wall (111) close to the waterproof meson (500); the baffle (112) is provided with a first through hole (115) for the rotating shaft (310) to pass through;

the stator assembly (200) and the rotor assembly (300) are mounted in a space defined by the surrounding wall (111) and the baffle (112),

the middle part of one side of waterproof meson (500) close to baffle (112) is provided with first boss (520), first boss (520) are inserted and are located in first through-hole (115).

5. The waterproof motor according to claim 4, characterized in that a tortuous path for waterproofing is formed between the waterproof meson (500) and the casing (110).

6. The waterproof motor of claim 5, wherein the tortuous path comprises: a first tortuous path; the waterproof meson (500) is close to one side of baffle (112) is provided with and is located recess (530) of first boss (520) week side, one side that baffle (112) is close to waterproof meson (500) is provided with and is located second boss (118) of first through-hole (115) week side, second boss (118) are inserted and are located in recess (530), recess (530) with form between second boss (118) first tortuous passageway.

7. The waterproof motor of claim 6, wherein the tortuous path further comprises: a second tortuous path; a step structure (540) is arranged between the groove (530) and the first boss (520) on the waterproof meson (500), a convex ring (119) is arranged on the inner wall of the first through hole (115), and a second tortuous channel is formed between the step structure (540) and the convex ring (119).

8. The waterproof motor according to claim 4, characterized in that the casing (110) further comprises: the air duct plate (114) is connected between the frame body (113) and the surrounding wall (111) and is used for dividing the space between the frame body (113) and the surrounding wall (111) into a plurality of air ducts.

9. The waterproof motor according to claim 4, characterized in that the housing assembly (100) further comprises: a fan housing assembly (120) disposed at the lower side of the housing (110); the movable impeller (400) is arranged in a space defined by the shell (110) and the fan cover assembly (120); the lower side of the fan cover assembly (120) is provided with a second through hole (121) for external air to enter the movable impeller (400).

10. The waterproof motor according to claim 4, characterized in that the housing assembly (100) further comprises: an end cover (130) arranged on the upper side of the casing (110); and a dust cover (140) mounted on the upper side of the end cover (130); the stator assembly (200) and the rotor assembly (300) are installed in a space defined by the casing (110) and the end cover (130), and a circuit board (600) electrically connected with the stator assembly (200) is contained in the space defined by the end cover (130) and the dust cover (140).