CN108768049B - Motor waterproof cover, motor and air conditioner - Google Patents

Abstract

The invention provides a motor waterproof cover, a motor and an air conditioner, wherein the motor waterproof cover comprises: the cylinder body comprises a first cylinder section, a cylinder opening is positioned at one end of the first cylinder section, and the distance between the upper surface of the outer wall of the first cylinder section and the central axis is gradually reduced along the direction away from the cylinder opening; the bottom plate is hermetically connected with the first end of the cylinder body, which is far away from the cylinder opening, and a shaft hole communicated with the inner cavity of the cylinder body is formed in the bottom plate. The upper surface of the outer wall of the first barrel section forms an inclined surface inclined toward the inside of the barrel body, and when water drops fall on the outer wall of the first barrel section, the water drops tend to flow in a direction away from the barrel opening, thereby preventing the water drops from flowing into the inside of the motor from the gap between the motor waterproof cover and the end cover.

Description

Motor waterproof cover, motor and air conditioner

Technical Field

The invention relates to the field of motors, in particular to a motor waterproof cover, a motor and an air conditioner.

Background

At present, the motor is widely applied to the life of people, and as the application places of the motor are more and more, the environment for using the motor is also more and more required, and the protection requirement on the motor is also more and more required. When the motor is in an excessively humid environment or is in water, the motor is easy to damage, so that the motor has strict requirements on waterproof performance.

In the prior art, please refer to fig. 1 and 2, the motor waterproof cover 6 'in the prior art is often sleeved on the end cover 3 of the motor to prevent water drops from entering the motor, but in the prior art, after the water drops drop onto the motor waterproof cover 6' in the prior art, the water drops do not flow along a fixed direction, and a part of the water drops are accumulated at a place where the motor waterproof cover 6 'in the prior art is attached to the end cover 3, and as time passes, the water drops slowly permeate into the motor waterproof cover 6' and flow into a gap between the motor shaft 5 and the end cover 3 to flow into the motor, so that the humidity inside the motor is increased and faults are likely to occur.

Therefore, the waterproof performance of the waterproof cover is improved, and water drops are prevented from flowing into the motor from the gap between the waterproof cover and the end cover of the motor, so that the waterproof cover is a problem to be solved in the prior art.

Disclosure of Invention

The invention provides a motor waterproof cover, a motor and an air conditioner, which are used for improving the waterproof performance of the waterproof cover.

In order to solve the above-described problems, as an aspect of the present invention, there is provided a waterproof cover for a motor, comprising:

The cylinder body comprises a first cylinder section, a cylinder opening is positioned at one end of the first cylinder section, and the distance between the upper surface of the outer wall of the first cylinder section and the central axis is gradually reduced along the direction away from the cylinder opening;

The bottom plate is hermetically connected with the first end of the cylinder body, which is far away from the cylinder opening, and a shaft hole communicated with the inner cavity of the cylinder body is formed in the bottom plate.

Optionally, the cylinder further comprises: the second section of thick bamboo is kept away from the one end airtight connection of nozzle with first section of thick bamboo, and the interval of the upper surface of the outer wall of second section of thick bamboo and central axis is along keeping away from the direction of first section of thick bamboo and progressively increases.

Optionally, a water guide ring groove is formed on the outer wall of the cylinder body, and the water guide ring groove is located between the first cylinder section and the second cylinder section.

Optionally, an opening communicated with the inner cavity is formed on the lower surface of the outer wall of the cylinder.

Optionally, the opening extends to a first end face of the first end.

Optionally, the edge of the bottom plate near the opening is provided with a first notch, and the first notch is communicated with the opening.

Optionally, a second baffle surrounding the opening is provided on the outer wall of the cylinder.

Optionally, the distance between the bottom surface of the second baffle away from the central axis and the central axis gradually increases along the direction away from the nozzle.

Optionally, when the second barrel section is included, the line of intersection of the first barrel section and the second barrel section intersects the aperture.

Optionally, the first end surface of the first end protrudes from the plane of the bottom plate in a direction away from the nozzle.

Optionally, a first baffle surrounding the shaft hole is arranged on one surface of the bottom plate away from the nozzle.

The application also provides a motor, which comprises any electric water cover provided by the application.

Optionally, the method further comprises: an end cap;

The end cover comprises an end cover body and an annular cover edge formed by everting the open end of the end cover body, the end cover body is covered on an extending shaft of the motor, and the annular cover edge is positioned in the motor shell and is abutted against the inner wall of the motor shell;

the motor waterproof cover is sleeved on the end cover body, the cylinder body is positioned between the motor shell and the end cover body, and one end of the cylinder body with the cylinder opening is abutted with the annular cover edge.

The application also provides an air conditioner, and any motor waterproof cover provided by the application.

The application provides a motor waterproof cover, a motor and an air conditioner, wherein the motor waterproof cover is arranged on the motor, the motor is inserted from a nozzle of the motor waterproof cover, the second end of the motor waterproof cover with the nozzle is attached to an end cover of the motor, the upper surface of the outer wall of a first section of tube is gradually close to a central axis from the second end to a direction far away from a nozzle, namely, an inclined surface which is inclined downwards is formed on the upper surface of the outer wall of the first section of tube, and when water drops fall on the outer wall of the first section of tube, the water drops tend to flow in the direction far away from the nozzle, so that the water drops are prevented from flowing into the motor from a gap between the motor waterproof cover and the end cover.

Drawings

FIG. 1 is a schematic diagram of a prior art motor;

Fig. 2 is a perspective view of the prior art motor waterproof cover of fig. 1;

fig. 3 is a perspective view of a waterproof cover for a motor according to an embodiment of the present application;

fig. 4 is a perspective view of another waterproof cover for a motor according to an embodiment of the present application;

Fig. 5 is a side view of a motor waterproof cover according to an embodiment of the present application;

Fig. 6 is a schematic diagram of an electric motor according to an embodiment of the present application.

Reference numerals in the drawings: 1. a cylinder; 11. a first barrel section; 12. a second barrel section; 13. a water guiding ring groove; 14. opening holes; 15. a second baffle; 16. a first end face; 2. a bottom plate; 21. a shaft hole; 22. a first notch; 23. a first baffle; 3. an end cap; 31. an end cap body; 32. an annular cover rim; 4. a waterproof ring; 5. a projecting shaft; 6. a motor waterproof cover; 6', a motor waterproof cover in the prior art; 7. a motor housing.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.

In order to improve the waterproof performance of a motor waterproof cover and prevent water drops from flowing into the motor from a gap between the motor waterproof cover and a motor shell to cause short circuit or faults of the motor, the application provides the motor waterproof cover, referring to fig. 2-5, the motor waterproof cover provided by the application is of a sleeve structure with a cylinder opening at one end, and comprises: the device comprises a barrel 1 and a bottom plate 2, wherein the barrel 1 comprises a first barrel section 11, a barrel opening is positioned at one end of the first barrel section, and the distance between the upper surface of the outer wall of the first barrel section 11 and the central axis is gradually reduced along the direction away from the barrel opening; the bottom plate 2 with barrel 1 keeps away from the first end airtight connection of nozzle, set up on the bottom plate 2 with the shaft hole 21 that the inner chamber of barrel 1 is linked together.

In this embodiment, the cylinder 1 may be a circular ring structure, a rectangular cone structure, or a polygonal cone structure, that is, the section of the cylinder 1 may be circular, or rectangular or polygonal, and may include only the first cylinder section 11, one end of the cylinder 1 has a cylinder opening, the other end is provided with the bottom plate 2, one end with the cylinder opening is the second end of the cylinder 1, the cylinder 1 and the bottom plate 2 enclose an inner cavity for accommodating the motor, the extension shaft of the motor is inserted into the inner cavity from the cylinder opening of the second end, and the extension shaft of the motor penetrates out of the shaft hole 21, so the shaft hole 21 is preferably circular and is adapted to the diameter of the extension shaft, and is tightly matched with each other to prevent water from entering, the bottom plate 2 may preferably be made of elastic material such as rubber, and the size of the shaft hole 21 may be slightly smaller than the diameter of the extension shaft, so that the shaft hole 21 and the extension shaft realize interference fit, thereby reducing the gap and preventing water leakage. The first barrel section 11 may be a conical ring, the outer diameter of the first barrel section 11 decreasing progressively in a direction away from the nozzle. Taking the first barrel section 11 as an example of the conical ring structure, when the motor waterproof cover 6 proposed by the application is used, please refer to fig. 6, the protruding shaft 5 is generally horizontally arranged, so that the central axis of the barrel 1 is also horizontally arranged, at this time, because the upper surface of the outer wall of the first barrel section 11 gradually decreases along the direction away from the barrel opening, when the water drops fall from the upper side in fig. 6, if the water drops fall at the gap between the motor waterproof cover 6 and the end cover 3, such as the uppermost part of the second end of the motor waterproof cover 6, the water drops are subject to gravity and tend to slide along the direction away from the barrel opening, so that the water drops do not accumulate at the gap between the motor waterproof cover 6 and the end cover 3, and thus do not enter the interior of the motor, alternatively, the outer diameter of the first barrel section 11 gradually decreases along the direction away from the barrel opening. The first barrel section 11 may also be a rectangular cone structure, which has an upper surface and a lower surface opposite to each other, a left surface and a right surface opposite to each other, one end of the four surfaces surrounds to form a barrel opening, the four surfaces integrally surround to form a rectangular cone, when in use, the upper surface and the lower surface are oppositely arranged along a vertical direction, a plane in which the upper surface and the lower surface are located is perpendicular to the vertical plane, the plane in which the left surface and the right surface are located is parallel to the vertical plane, and the upper surface is located at one side of the lower surface away from the ground, so that water drops, such as raindrops, can fall on the upper surface, the distance between the upper surface and the central axis gradually decreases in a direction away from the barrel opening, namely, the upper surface is an inclined plane intersecting with the horizontal plane and inclines in a direction away from the barrel opening, so that the water drops can flow in a direction away from the barrel opening, and accumulation of the water drops at a gap between the motor waterproof cover and the end cover is prevented. As can be seen from the above, in this embodiment, when the motor waterproof cover provided by the application is used, the upper surface of the outer wall of the first barrel section 11 is an inclined surface intersecting with the horizontal plane, and is inclined towards the ground along the direction away from the barrel opening, so that water drops can be away from the barrel opening under the action of gravity, and water drops are prevented from accumulating at the gap between the motor waterproof cover and the end cover, so that water inflow of the motor is prevented.

Preferably, in some alternative embodiments, the cartridge further comprises: and the second barrel section 12 is hermetically connected with one end, far away from the barrel opening, of the first barrel section 11, and the distance between the upper surface of the outer wall of the second barrel section 12 and the central axis gradually increases along the direction far away from the first barrel section 11. Optionally, the second barrel section 12 is a conical ring, and the outer diameter of the second barrel section 12 gradually increases in a direction away from the first barrel section 11. Since the motor waterproof cover is sleeved on the motor, and the extending shaft of the motor extends out of the shaft hole 21, if the cylinder 1 only comprises the first cylinder section 11, water drops flow to the first end of the cylinder 1 under the action of gravity, flow along the surface of the bottom plate 2, and part of water drops possibly flow to the edge of the shaft hole 21 and flow into the motor along the extending shaft. In order to prevent the above problem, a second barrel section 12 is provided, and referring to fig. 3-6, the upper surface of the outer wall of the second barrel section 12 gradually increases in distance from the central axis in the direction away from the first barrel section 11, alternatively, the second barrel section 12 has a circular ring structure with an outer diameter gradually increasing in the direction away from the first barrel section 11. The water drops flowing from the nozzle to the second barrel section 12 will collect at the junction of the first barrel section 11 and the second barrel section 12 and flow downwardly along the junction under the action of gravity, and since the water drops on the upper surfaces of the first barrel section 11 and the second barrel section 12 all tend to flow through the junction, the water drops at the junction will be more concentrated and fall off from the lower surface of the outer wall of the motor waterproof cover 6 under the action of gravity, thereby accelerating the separation speed of the water drops from the motor waterproof cover.

Preferably, in some alternative embodiments, a water guiding ring groove 13 is formed on the outer wall of the barrel 1, the water guiding ring groove 13 is located between the first barrel section 11 and the second barrel section 12, that is, a water guiding ring groove 13 overlapping with the intersection line of the first barrel section 11 and the second barrel section 12 is formed on the outer wall of the barrel 1. Referring to fig. 5, since the water drops on the upper surfaces of the first and second barrel sections 11 and 12 are liable to merge toward the junction line, the water guiding ring groove 13 is provided along the junction line so as to accommodate more water and to function as a guide to guide the converging water to flow toward the lower surface of the motor waterproof cover, and to guide the water drops to converge and drip at the position of the water guiding ring groove 13 closest to the ground.

Preferably, in some alternative embodiments, an opening 14 is provided in the lower surface of the outer wall of the cylinder 1, which communicates with the inner cavity. Although the motor waterproof cover is arranged on the extending shaft of the motor, water possibly enters the motor, at the moment, in order to enable water in the motor to be evaporated smoothly, the motor waterproof cover is provided with the opening 14 to facilitate evaporation of the water, meanwhile, in order to prevent raindrops from entering the motor from the opening 14 during raining, the opening 14 is arranged on the lower surface of the outer wall of the cylinder body 1, and the opening direction of the opening 14 is arranged towards the ground.

Preferably, in some alternative embodiments, the aperture 14 extends to a first end face 16 of the first end. Referring to fig. 3-6, the protruding shaft 5 of the motor protrudes from the shaft hole 21, and due to the gap between the protruding shaft and the shaft hole, water drops may flow into the waterproof cover of the motor from the gap between the protruding shaft and the shaft hole, at this time, the water drops slide along the inner wall of the bottom plate 2, and under the action of gravity, the water drops easily flow to the lower part of the inner wall surface of the bottom plate 2 in fig. 6, so that the water drops on the inner wall surface of the bottom plate 2 are easily left by providing the opening 14 to extend to the first end surface 16, which is beneficial for drainage. Optionally, a first notch 22 is provided on the edge of the bottom plate 2 near the opening 14, and the first notch 22 is in communication with the opening 14. When water drops flow into the motor waterproof cover from the gap between the shaft hole and the motor extending shaft, the water drops are easy to gather on the inner wall of the bottom plate 2, so that the first notch 22 is arranged, and water drainage is facilitated.

Preferably, in some alternative embodiments, a second baffle 15 surrounding the aperture 14 is provided on the outer wall of the cartridge 1. Although the opening 14 is provided toward the ground, in some cases, when water droplets collect at the edge of the opening 14, the water droplets may still flow into the inside of the motor, and thus a second baffle 15 is provided on the outer wall around the opening 14, thereby preventing the water droplets from flowing from the opening 14 into the inside of the motor.

Preferably, in some alternative embodiments, the distance between the bottom surface of the second baffle 15 away from the central axis and the central axis increases gradually in a direction away from the nozzle. In the present embodiment, the center axis is horizontally arranged, so that the distance between the second baffle 15 and the ground gradually decreases in the direction away from the nozzle, and therefore, the water droplets on the second baffle 15 can be guided to flow together in the direction away from the nozzle, and finally drop.

Preferably, in some alternative embodiments, when a second barrel section 12 is included, the line of intersection of the first barrel section 11 and the second barrel section 12 intersects the aperture 14. Although the motor waterproof cover 6 provided by the application can effectively prevent water drops from entering the motor, if water drops enter from a gap between the motor waterproof cover 6 and the end cover 3 due to unexpected situations, the entering water drops also tend to flow along the inner wall surface of the first barrel section 11 in a direction away from the pipe orifice, tend to collect on the inner wall surface where the first barrel section 11 and the second barrel section 12 meet, and then flow along the intersection line on the inner wall surface, so that the opening 14 is arranged on the intersection line of the first barrel section 11 and the second barrel section 12, and the water drops on the inner wall surface can smoothly flow out, on the other hand, when the second baffle 15 is arranged, the starting end and the end of the water guiding ring groove are positioned on the second baffle 15, and the water collected in the water guiding ring groove can flow downwards along the second baffle 15 without flowing into the motor waterproof cover through the opening 14.

Preferably, in some alternative embodiments, the first end face 16 of the first end protrudes from the plane of the base plate 2 in a direction away from the nozzle. Referring to fig. 3, the bottom plate 2 is provided with a shaft hole 21, so that water drops on the bottom plate 2 should be reduced as much as possible in order to prevent water drops from flowing in from the shaft hole 21, and the first end surface 16 is disposed to protrude from the plane of the bottom plate 2, so that water drops dropping on the bottom plate 2 are reduced, and water drops drop on the upper surface of the cylinder 1 as much as possible. Optionally, a first notch 22 is provided on the edge of the bottom plate 2 near the opening 14, and the first notch 22 is in communication with the opening 14. Referring to fig. 3, when raining, raindrops may be hit on the bottom plate 2 along an inclined direction, when the first end surface 16 protrudes out of the plane of the bottom plate 2, the first end portion actually surrounds the bottom plate 2, and water drops may be accumulated on the bottom plate 2, so that a first notch 22 is formed on the bottom plate 2, and the first notch 22 is located at the lower edge of the bottom plate 2, so that the water drops are convenient to drop, and therefore the first notch 22 is formed on the bottom plate 2 and is communicated with the opening 14, and even if some water drops flow into the motor waterproof cover from the first notch 22, the water drops are easy to be removed from the opening 14.

Preferably, in some alternative embodiments, a first baffle 23 surrounding the shaft hole 21 is provided on a side of the bottom plate 2 remote from the nozzle. The first baffle plate 23 protrudes from the outer surface of the bottom plate 2, and when water drops strike the bottom plate 2, the water drops slide downward along the outer surface of the bottom plate 2 under the action of gravity and are blocked by the first baffle plate 23, preventing flowing into the gap between the shaft hole 21 and the protruding shaft. Optionally, the motor waterproof cover provided by the application is integrally formed

The application also provides a motor, please refer to fig. 6, comprising a motor waterproof cover 6, an end cover 3, a waterproof ring 4 and an extension shaft 5, wherein the waterproof ring 4 is sleeved on the extension shaft 5 and is positioned inside the motor waterproof cover 6 to prevent water from flowing along the extension shaft, alternatively, the projection of the waterproof ring 4 on the lower wall surface of the cylinder 1 is overlapped with an opening, water drops are easily accumulated on one side of the waterproof ring 4 close to the bottom plate 2, at the moment, the water drops easily flow to the lowest part of the waterproof ring 4 under the action of gravity, and please refer to fig. 6, the waterproof ring 4 is arranged vertically above the opening, so that the accumulated water drops on the lowest part of the waterproof ring 4 flow out of the opening.

Preferably, in some alternative embodiments, the motor comprises an end cap 3; the end cover 3 comprises an end cover body 31 and an annular cover edge 32 formed by everting the open end of the end cover body, the end cover body 31 is covered on the extending shaft of the motor, and the annular cover edge 32 is positioned in the motor shell 7 and is abutted against the inner wall of the motor shell 7; the motor waterproof cover 6 is sleeved on the end cover body 31, the cylinder body 1 is located between the motor shell 7 and the end cover body 31, the motor waterproof cover and the end cover body form a clamping sealing structure, and one end of the cylinder body 1 with the cylinder opening is abutted to the annular cover edge 32.

The application also provides an air conditioner, which comprises the motor waterproof cover. The motor and the air conditioner provided by the application comprise all the characteristics of the motor waterproof cover provided by the application, and are not repeated here.

The application provides a motor waterproof cover, a motor and an air conditioner, wherein the motor waterproof cover is arranged on the motor, the motor is inserted from a nozzle of the motor waterproof cover, the second end of the motor waterproof cover is provided with the nozzle, and the second end of the nozzle is in contact with an end cover of the motor.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A motor waterproof cover, comprising:

the cylinder body (1) comprises a first cylinder section (11), a cylinder opening is positioned at one end of the first cylinder section (11), and the distance between the upper surface of the outer wall of the first cylinder section (11) and the central axis is gradually reduced along the direction away from the cylinder opening;

The bottom plate (2) is hermetically connected with the first end, far away from the cylinder opening, of the cylinder body (1), and the bottom plate (2) is provided with a shaft hole (21) communicated with the inner cavity of the cylinder body (1);

The barrel further comprises: the second barrel section (12) is hermetically connected with one end, far away from the barrel opening, of the first barrel section (11), and the distance between the upper surface of the outer wall of the second barrel section (12) and the central axis is gradually increased along the direction far away from the first barrel section (11);

the first end face (16) of the first end protrudes out of the plane of the bottom plate (2) along the direction away from the cylinder mouth;

A first baffle (23) surrounding the shaft hole (21) is arranged on one surface of the bottom plate (2) away from the cylinder opening;

An opening (14) communicated with the inner cavity is formed in the lower surface of the outer wall of the cylinder body (1);

a second baffle (15) surrounding the opening (14) is arranged on the outer wall of the cylinder (1); the distance between the bottom surface of the second baffle plate (15) far away from the central axis and the central axis gradually increases along the direction far away from the nozzle.

2. The motor waterproof cover according to claim 1, characterized in that a water guide ring groove (13) is formed in the outer wall of the cylinder body (1), and the water guide ring groove (13) is located between the first cylinder section (11) and the second cylinder section (12).

3. The motor waterproof cover according to claim 1, characterized in that the opening (14) extends to a first end face (16) of the first end.

4. A motor waterproof cover according to claim 3, characterized in that the edge of the base plate (2) adjacent to the opening (14) is provided with a first notch (22), the first notch (22) being in communication with the opening (14).

5. Motor shield according to any of claims 1-4, characterized in that the line of intersection of the first and second barrel sections (11, 12) intersects the aperture (14).

6. An electric motor comprising the motor waterproof cover according to any one of claims 1 to 5.

7. An electric machine as claimed in claim 6, further comprising: an end cap (3);

The end cover (3) comprises an end cover body (31) and an annular cover edge (32) formed by everting the open end of the end cover body, the end cover body (31) is covered on an extending shaft of the motor, and the annular cover edge (32) is positioned in the motor shell (7) and is abutted against the inner wall of the motor shell (7);

the motor waterproof cover (6) is sleeved on the end cover body (31), the cylinder body (1) is located between the motor shell (7) and the end cover body (31), and one end of the cylinder body (1) with the cylinder opening is abutted to the annular cover edge (32).

8. An air conditioner comprising the motor waterproof cover according to any one of claims 1 to 5.