Motor and air conditioner

Abstract

The motor comprises a motor shaft, a bearing and a sealing waterproof structure, the sealing waterproof structure comprises a sealing element, the sealing element comprises a body part and a stop part, the body part is sleeved on the motor shaft, the stop part is annular, the radial inner end of the stop part is connected with the outer peripheral wall of the body part, and the bearing is arranged on the body part. In the radial direction of the motor shaft, the body part is located on the radial inner side of the extension part and arranged opposite to the extension part, and the stop part is partially located on the radial outer side of the extension part and partially arranged opposite to the extension part. According to the sealing waterproof structure of the utility model, the cooperation of the stop part and the extension part effectively prevents dust, liquid and other foreign matters from contacting with the bearing or entering into the motor, and the body part effectively prevents dust, liquid and other foreign matters from contacting with the bearing or entering into the motor from the gap between the extension part and the motor shaft. Therefore, double waterproof sealing effects are achieved, and reliability and service life of the motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor and an air conditioner. Background Art

[0002] With the development of motors, higher requirements are put forward for the protection of motors, especially for motors used outdoors, and their waterproof performance. Usually, a waterproof rubber ring is arranged on the motor shaft to improve the waterproof performance of the motor. However, the waterproof rubber ring in the prior art is independent of other components of the motor, and the waterproof effect is not good. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a motor, and the sealing and waterproof structure of the motor realizes a double waterproof sealing effect, improving the reliability and service life of the motor.

[0004] The utility model also provides an air conditioner, which includes the above-mentioned motor.

[0005] The motor according to the embodiment of the utility model includes: a motor shaft; a bearing, the bearing is sleeved on the motor shaft, a bearing cover is sleeved outside the bearing, the bearing cover has an extension part, the extension part is located on one side of the axial direction of the bearing and is sleeved outside the motor shaft; a sealing and waterproof structure, the sealing and waterproof structure includes a seal, the seal includes a body part and a stop part, the body part is sleeved on the motor shaft, the stop part is annular, the radially inner end of the stop part is connected to the outer peripheral wall of the body part, along the radial direction of the motor shaft, the body part is located radially inside the extension part and is arranged opposite to the extension part, and a part of the stop part is located radially outside the extension part and a part of it is arranged opposite to the extension part.

[0006] For the motor according to the embodiment of the utility model, the bearing cover has an extension part, the extension part is located on one side of the axial direction of the bearing and is sleeved outside the motor shaft, the seal includes a body part and a stop part, the body part is sleeved on the motor shaft, the stop part is annular, the radially inner end of the stop part is connected to the outer peripheral wall of the body part, along the radial direction of the motor shaft, by a part of the stop part being located radially outside the extension part and being arranged opposite to the extension part, the cooperation between the stop part and the extension part effectively blocks dust, liquid and other foreign matters from contacting the bearing or entering the interior of the motor, and by the body part being located radially inside the extension part and being arranged opposite to the extension part, the body part effectively blocks dust, liquid and other foreign matters from contacting the bearing or entering the interior of the motor through the gap between the extension part and the motor shaft, thereby realizing a double waterproof sealing effect and improving the reliability and service life of the motor applying the sealing and waterproof structure.

[0007] In some embodiments of the present utility model, the stop portion includes: a first stop portion, the first stop portion being annular and having its radially inner end connected to the outer peripheral wall of the body portion; a second stop portion, one end of the second stop portion in the axial direction of the motor shaft being connected to the radially outer end of the first stop portion, and the other end facing the bearing and extending in a direction away from the motor shaft. In the radial direction of the motor shaft, at least a part of the second stop portion is located radially outside the extension portion and is disposed opposite thereto.

[0008] In some embodiments of the present utility model, a protrusion is provided on the outer peripheral wall of the body portion, the protrusion extending in a circumferential direction of the body portion to form an annulus, and at least a part of the protrusion is disposed opposite to the extension portion in the radial direction.

[0009] In some embodiments of the present utility model, in the axial direction of the motor shaft, the extension portion includes a first section and a second section connected in sequence. One end of the first section facing away from the bearing is connected to the second section, and one end of the second section facing away from the first section extends in a direction away from the bearing and away from the motor shaft.

[0010] In some embodiments of the present utility model, the inner diameter of the first section remains unchanged in the axial direction of the motor shaft. The protrusion includes a first protrusion and a second protrusion. The first protrusion is located on a side of the second protrusion close to the bearing, and one end of the first protrusion facing away from the motor shaft extends beyond one end of the second protrusion facing away from the motor shaft. In the radial direction of the motor shaft, the first protrusion is opposite to the first section, and at least a part of the second protrusion is opposite to the second section.

[0011] In some embodiments of the present utility model, the first protrusion is in clearance fit or dynamic seal contact with the first section.

[0012] In some embodiments of the present utility model, in the direction from the first protrusion to the second protrusion, a side wall surface of the second protrusion facing away from the first protrusion is inclined in a direction towards the motor shaft.

[0013] In some embodiments of the present utility model, on a cross-section parallel to the axial direction of the motor shaft and passing through the central axis of the motor shaft, a free end surface of the first protrusion forms a cylindrical surface; and / or, in the direction from the first protrusion to the second protrusion, a side wall surface of the first protrusion close to the second protrusion is inclined in a direction towards the motor shaft.

[0014] In some embodiments of the present utility model, in the axial direction of the motor shaft, one axial end of the body portion abuts against the bearing. A sealing tooth is provided on the inner peripheral wall of the body portion, the sealing tooth extending in a circumferential direction of the motor shaft, and the sealing tooth is in interference fit with the motor shaft.

[0015] In some embodiments of the present utility model, the sealing teeth are multiple and spaced apart along the axial direction of the motor shaft; and / or, the sealing teeth extend in a ring shape along the circumferential direction of the motor or the sealing teeth include multiple sub-teeth spaced apart along the circumferential direction of the motor.

[0016] In some embodiments of the present utility model, in the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth along the axial direction of the motor shaft remains unchanged or gradually decreases.

[0017] In some embodiments of the present utility model, in the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth along the axial direction of the motor shaft gradually decreases, the cross-section of the sealing teeth is trapezoidal, and in the direction from the fixed end to the free end of the sealing teeth, the two side walls of the sealing teeth along the axial direction of the motor shaft are inclined towards each other or one of them is inclined towards the direction away from the bearing.

[0018] In some embodiments of the present utility model, in the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth along the axial direction of the motor shaft remains unchanged, and the cross-section of the sealing teeth is rectangular or a parallelogram inclined towards the direction away from the bearing.

[0019] The air conditioner according to an embodiment of the present utility model includes the above-mentioned motor.

[0020] The air conditioner according to an embodiment of the present utility model is provided with a motor. A part of the stop portion of the sealing and waterproof structure is located radially outside the extension portion and is arranged opposite to the extension portion, so that the cooperation of the stop portion and the extension portion effectively blocks dust, liquid and other foreign objects from contacting the bearing or entering the interior of the motor. And the body portion of the sealing and waterproof structure is located radially inside the extension portion and is arranged opposite to the extension portion, so that the body portion effectively blocks dust, liquid and other foreign objects from contacting the bearing or entering the interior of the motor through the gap between the extension portion and the motor shaft, thereby achieving a double waterproof sealing effect and improving the reliability and service life of the air conditioner.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a cross-sectional view of the motor according to an embodiment of the present utility model;

[0024] Figure 2 is Figure 1 the enlarged view of part A in

[0025] Figure 3 the cross-sectional view of the motor according to another embodiment of the present utility model;

[0026] Figure 4 is Figure 3 the enlarged view of part B in

[0027] Figure 5 the cross-sectional view of the motor according to yet another embodiment of the present utility model;

[0028] Figure 6 is Figure 5 the enlarged view of part C in

[0029] Figure 7 the cross-sectional view of the motor according to still another embodiment of the present utility model;

[0030] Figure 8 is Figure 7 the enlarged view of part D in

[0031] Reference numerals:

[0032] 100, motor;

[0033] 10, sealing and waterproof structure;

[0034] 1, seal; 11, sealing teeth; 12, body part; 13, stop part; 131, first stop part; 132, second stop part; 14, protrusion; 141, first protrusion; 142, second protrusion;

[0035] 20, bearing;

[0036] 30, bearing cover; 301, extension part; 3011, first section; 3012, second section;

[0037] 40, motor shaft;

[0038] 50, stator;

[0039] 60, rotor. Detailed implementation manners

[0040] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0043] The following describes the motor 100 according to an embodiment of the present utility model with reference to the drawings.

[0044] As Figures 1 - 8 shown, for the motor 100 according to an embodiment of the present utility model, the motor 100 includes a motor shaft 40, a bearing 20, and a waterproof sealing structure 10. The bearing 20 is sleeved on the motor shaft 40, and a bearing cover 30 is sleeved outside the bearing 20. Thus, the motor shaft 40 is supported by the bearing 20, reducing the friction generated when the motor shaft 40 rotates, thereby reducing the energy consumption and noise of the motor 100 and improving the reliability of the motor 100. At the same time, the bearing 20 is protected by the bearing cover 30, extending the service life of the bearing 20 and further improving the reliability of the motor 100.

[0045] The bearing cover 30 has an extension 301. The extension 301 is located on one side in the axial direction of the bearing 20 and is sleeved outside the motor shaft 40. The waterproof sealing structure 10 includes a seal 1. The seal 1 includes a body portion 12 and a stop portion 13. The body portion 12 is sleeved on the motor shaft 40. The stop portion 13 is annular. The radially inner end of the stop portion 13 is connected to the outer peripheral wall of the body portion 12. Along the radial direction of the motor shaft 40, the body portion 12 is located radially inside the extension 301 and is disposed opposite to the extension 301. Part of the stop portion 13 is located radially outside the extension 301 and part of it is disposed opposite to the extension 301.

[0046] Thus, along the radial direction of the motor shaft 40, the part of the stop portion 13 located radially outside the extension portion 301 and opposite to the extension portion 301, so that the cooperation between the stop portion 13 and the extension portion 301 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100. And since the stop portion 13 is annular, the waterproof sealing effect of the stop portion 13 is further improved. Also, the body portion 12 is located radially inside the extension portion 301 and opposite to the extension portion 301, so that the body portion 12 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100 through the gap between the extension portion 301 and the motor shaft 40. Thus, a double waterproof sealing effect is achieved through the stop portion 13 and the extension portion 301, improving the reliability and service life of the motor 100.

[0047] Meanwhile, along the radial direction of the motor shaft 40, the part of the stop portion 13 is opposite to the extension portion 301, and the body portion 12 is located radially inside the extension portion 301 and part of it is opposite to the extension portion 301, thereby realizing a labyrinth-type waterproof sealing structure and further improving the waterproof sealing effect of the sealing and waterproof structure 10. In addition, along the radial direction of the motor shaft 40, the part of the stop portion 13 is located radially outside the extension portion 301 and part of it is opposite to the extension portion 301, so that while the stop portion 13 has a waterproof sealing effect, it also plays a certain protective role on the extension portion 301, enabling the extension portion 301 to be made smaller compared to the prior art, thus reducing the processing difficulty of the bearing cover 30.

[0048] Furthermore, the seal 1 is an integral part, thereby effectively improving the structural strength of the seal 1 and ensuring the waterproof sealing effect of the seal 1.

[0049] For the motor according to an embodiment of the present invention, the bearing cover 30 has an extension portion 301. The extension portion 301 is located on one side in the axial direction of the bearing 20 and sleeved outside the motor shaft 40. The seal 1 includes a body portion 12 and a stop portion 13. The body portion 12 is sleeved on the motor shaft 40. The stop portion 13 is annular. The radially inner end of the stop portion 13 is connected to the outer peripheral wall of the body portion 12. Along the radial direction of the motor shaft 40, the part of the stop portion 13 located radially outside the extension portion 301 and opposite to the extension portion 301, so that the cooperation between the stop portion 13 and the extension portion 301 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100. And since the body portion 12 is located radially inside the extension portion 301 and opposite to the extension portion 301, the body portion 12 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100 through the gap between the extension portion 301 and the motor shaft 40. Thus, a double waterproof sealing effect is achieved, improving the reliability and service life of the motor 100.

[0050] In some embodiments of the present utility model, as Figures 1 - 8 shown, the stop portion 13 includes a first stop portion 131 and a second stop portion 132. Among them, the first stop portion 131 is annular and its radially inner end is connected to the outer peripheral wall of the body portion 12. One end of the second stop portion 132 in the axial direction of the motor shaft 40 is connected to the radially outer end of the first stop portion 131, and the other end extends towards the bearing 20 and in a direction away from the motor shaft 40. In the radial direction of the motor shaft 40, at least a part of the second stop portion 132 is located radially outside the extension portion 301 and is oppositely arranged.

[0051] Thus, the first stop portion 131 blocks the gap between the body portion 12 and the extension portion 301 in the axial direction of the motor shaft 40, thereby preventing dust, liquid, and other foreign objects from contacting the bearing 20 or entering the interior of the motor 100. Moreover, the annular arrangement of the first stop portion 131 further improves the sealing effect of the first stop portion 131. And the second stop portion 132 blocks dust, liquid, and other foreign objects from contacting the bearing 20 or entering the interior of the motor 100 in the radial direction of the motor shaft 40, thereby improving the waterproof sealing effect of the stop portion 13.

[0052] At the same time, when liquid enters between the stop portion 13 and the extension portion 301, since one end of the second stop portion 132 away from the first stop portion 131 extends towards the bearing 20 and in a direction away from the motor shaft 40, the second stop portion 132 plays a certain role in guiding the flow, so that the liquid entering between the stop portion 13 and the extension portion 301 can flow out along the outer surface of the second stop portion 132, thereby realizing the water drainage function of the sealing and waterproof structure 10, effectively avoiding the damage caused by liquid accumulation, and further maintaining the normal operation of the motor 100 and extending its service life.

[0053] Furthermore, the second stop portion 132 is annular, and the sealing member 1 is formed in the shape of a flared opening facing the bearing 20, further improving the waterproof and water drainage effects of the sealing member 1.

[0054] In some embodiments of the present utility model, as Figures 1 - 8 shown, a protrusion 14 is provided on the outer peripheral wall of the body portion 12. The protrusion 14 extends circumferentially along the body portion 12 to form an annular shape, and at least a part of the protrusion 14 is oppositely arranged with the extension portion 301 in the radial direction. Thus, through the arrangement of the protrusion 14, the gap between the body portion 12 and the extension portion 301 is further reduced, thereby further preventing dust, liquid, and other foreign objects from entering the bearing 20 or the interior of the motor 100 through the gap between the body portion 12 and the extension portion 301, and improving the waterproof sealing property.

[0055] In some embodiments of the present utility model, as Figures 1 - 8As shown, along the axial direction of the motor shaft 40, the extension portion 301 includes a first section 3011 and a second section 3012 that are sequentially connected. One end of the first section 3011 facing away from the bearing 20 is connected to the second section 3012, and one end of the second section 3012 facing away from the first section 3011 extends in a direction away from the bearing 20 and away from the motor shaft 40.

[0056] Thus, when liquid enters between the main body portion 12 and the extension portion 301, since one end of the second section 3012 facing away from the first section 3011 extends in a direction away from the bearing 20 and away from the motor shaft 40, the second section 3012 plays a certain role in guiding the flow of the liquid, so that the liquid entering between the main body portion 12 and the extension portion 301 can flow out along the outer surface of the second section 3012, thereby realizing the water drainage function of the waterproof sealing structure 10, effectively avoiding the damage caused by liquid accumulation, and further maintaining the normal operation of the motor 100 and extending its service life.

[0057] In some embodiments, as Figures 1 - 8 shown, the stop portion 13 includes a first stop portion 131 and a second stop portion 132. Among them, the first stop portion 131 is annular and its radially inner end is connected to the outer peripheral wall of the main body portion 12. One end of the second stop portion 132 along the axial direction of the motor shaft 40 is connected to the radially outer end of the first stop portion 131, and the other end extends in a direction away from the motor shaft 40 and towards the bearing 20. Along the radial direction of the motor shaft 40, at least a part of the second stop portion 132 is located radially outside the extension portion 301 and is arranged oppositely. Along the axial direction of the motor shaft 40, the extension portion 301 includes a first section 3011 and a second section 3012 that are sequentially connected. One end of the first section 3011 facing away from the bearing 20 is connected to the second section 3012, and one end of the second section 3012 facing away from the first section 3011 extends in a direction away from the bearing 20 and away from the motor shaft 40. Thus, a dual water drainage function is realized through the second stop portion 132 and the second section 3012.

[0058] In some embodiments of the present utility model, as Figures 1 - 8 shown, the inner diameter of the first section 3011 remains unchanged along the axial direction of the motor shaft 40. The protrusion 14 includes a first protrusion 141 and a second protrusion 142. The first protrusion 141 is located on the side of the second protrusion 142 close to the bearing 20. One end of the first protrusion 141 facing away from the motor shaft 40 extends beyond one end of the second protrusion 142 facing away from the motor shaft 40. Along the radial direction of the motor shaft 40, the first protrusion 141 is opposite to the first section 3011, and at least a part of the second protrusion 142 is opposite to the second section 3012.

[0059] It can be understood that the liquid entering between the main body portion 12 and the extension portion 301 passes through the second protrusion 142 and the first protrusion 141 in sequence. Since one end of the first protrusion 141 facing away from the motor shaft 40 extends beyond one end of the second protrusion 142 facing away from the motor shaft 40, the second protrusion 142 and the first protrusion 141 sequentially block the liquid, effectively preventing the liquid from entering the bearing 20 or the interior of the motor 100.

[0060] Meanwhile, since one end of the second section 3012 facing away from the first section 3011 extends in a direction away from the bearing 20 and away from the motor shaft 40, at least a part of the second protrusion 142 is opposite to the second section 3012. In the direction from the second protrusion 142 to the first protrusion 141, the distance between the second section 3012 and the second protrusion 142 gradually decreases, and the inner diameter of the first section 3011 along the axial direction of the motor shaft 40 remains unchanged, and the first protrusion 141 is opposite to the first section 3011. In the direction from the second protrusion 142 to the first protrusion 141, the distance between the first section 3011 and the first protrusion 141 remains unchanged, so that the first protrusion 141 further blocks the liquid from entering the bearing 20 or the interior of the motor 100, improving the waterproof effect of the waterproof structure 10.

[0061] In some embodiments of the present invention, the first protrusion 141 is in clearance fit or dynamic seal contact with the first section 3011. It can be understood that, as Figures 1 - 8 shown, the first protrusion 141 is in clearance fit with the first section 3011. Thus, through such a setting, while preventing the liquid from entering the bearing 20 or the interior of the motor 100, the liquid located on the side of the first protrusion 141 facing away from the second protrusion 142 can also be discharged from between the first protrusion 141 and the first section 3011; or, the first protrusion 141 is in dynamic seal contact with the first section 3011. It can be understood that the seal 1 rotates with the motor shaft 40, and the fixed portion of the bearing cover 30 does not move. Through the dynamic seal contact between the first protrusion 141 and the first section 3011, while ensuring the relative movement of the seal 1 and the bearing cover 30, the liquid is completely blocked from entering the bearing 20 or the interior of the motor 100 from between the first protrusion 141 and the first section 3011.

[0062] In some embodiments of the present invention, as Figures 1 - 8As shown, in the direction from the first protrusion 141 to the second protrusion 142, the side wall surface of the second protrusion 142 facing away from the first protrusion 141 is inclined towards the motor shaft 40. Thus, after the liquid entering between the main body portion 12 and the extension portion 301 is blocked by the second protrusion 142, it can flow towards the lower part along this inclined side wall surface, realizing the water drainage function, effectively reducing the liquid staying between the protrusion 14 and the extension portion 301. And in cooperation with the end of the second section 3012 facing away from the first section 3011 extending towards the direction away from the bearing 20 and away from the motor shaft 40, it can further discharge the liquid between the main body portion 12 and the extension portion 301, ensuring the water drainage effect.

[0063] Optionally, in the projection in the radial direction of the motor shaft 40, the side wall surface of the second protrusion 142 facing away from the first protrusion 141 extends beyond the extension portion 301.

[0064] In some embodiments of the present utility model, as Figures 1 - 8 shown, in the cross-section parallel to the axial direction of the motor shaft 40 and passing through the central axis of the motor shaft 40, the free end surface of the first protrusion 141 is formed as a cylindrical surface. It can be understood that in the cross-section parallel to the axial direction of the motor shaft 40 and passing through the central axis of the motor shaft 40, the free end surface of the first protrusion 141 and the end surface of the first section 3011 facing the motor shaft 40 are opposite to each other. By forming the free end surface of the first protrusion 141 as a cylindrical surface, the distance between the first section 3011 and the first protrusion 141 remains unchanged, so that the first protrusion 141 further blocks the liquid from entering the bearing 20 or the interior of the motor 100, improving the waterproof effect of the waterproof sealing structure 10. And the setting of the cylindrical surface can reduce the concentrated impact of the liquid on a certain area, improving the overall reliability.

[0065] In some embodiments of the present utility model, as Figures 1 - 8 shown, in the direction from the first protrusion 141 to the second protrusion 142, the side wall surface of the first protrusion 141 close to the second protrusion 142 is inclined towards the motor shaft 40. Thus, after the liquid entering between the main body portion 12 and the extension portion 301 is blocked by the first protrusion 141, it can flow towards the first protrusion 141 along this inclined side wall surface, realizing the water drainage function and reducing the liquid staying between the first protrusion 141 and the extension portion 301.

[0066] Further, in the direction from the first protrusion 141 to the second protrusion 142, the side wall surface of the second protrusion 142 facing away from the first protrusion 141 is inclined towards the motor shaft 40. Thus, the liquid blocked by the first protrusion 141 flows towards the first protrusion 141 along the side wall surface of the first protrusion 141 close to the second protrusion 142, and flows towards the lower point along the side wall surface of the first protrusion 141 close to the second protrusion 142, realizing double water drainage and further reducing the liquid retention.

[0067] In some embodiments of the present utility model, as Figures 1 - 8 shown, along the axial direction of the motor shaft 40, one axial end of the main body portion 12 abuts against the bearing 20. A sealing tooth 11 is provided on the inner peripheral wall of the main body portion 12. The sealing tooth 11 extends along the circumferential direction of the motor shaft 40, and the sealing tooth 11 is in interference fit with the motor shaft 40.

[0068] Thus, through the interference fit between the sealing tooth 11 and the motor shaft 40, the relative fixation between the seal 1 and the motor shaft 40 is achieved, ensuring the installation reliability and stability of the seal 1 on the motor shaft 40, and at the same time ensuring the waterproof sealing effect of the seal 1. Meanwhile, there is no need to groove on the motor shaft 40, ensuring the integrity of the motor shaft 40, ensuring the structural strength of the motor shaft 40, and reducing the production cost. In addition, by abutting the seal 1 against the bearing 20, the limiting and positioning effects on the seal 1 can be achieved, further improving the installation reliability and stability of the seal 1 on the motor shaft 40.

[0069] In some embodiments of the present utility model, as Figures 1 - 8 shown, the sealing teeth 11 are multiple and spaced apart along the axial direction of the motor shaft 40. Thus, the fixing effect of the seal 1 on the motor shaft 40 is further improved, ensuring the installation reliability and stability of the seal 1 on the motor shaft 40, and at the same time improving the waterproof sealing effect of the waterproof sealing structure 10.

[0070] Among them, for example, in the Figures 1 - 8 shown example, the sealing teeth 11 are 7 and spaced apart along the axial direction of the motor shaft 40. However, the present utility model is not limited thereto, and the sealing teeth 11 can also be other numbers, such as 3, 4, 8, or 10, etc.

[0071] In some embodiments of the present utility model, the sealing tooth 11 extends along the circumferential direction of the motor 100 to form a ring or the sealing tooth 11 includes multiple sub-teeth spaced apart along the circumferential direction of the motor 100. Thus, through such a setting, while ensuring the connection strength between the seal 1 and the motor shaft 40, the weight of the sealing tooth 11 can be reduced, making the structure of the motor 100 lighter.

[0072] In some embodiments of the present utility model, in the direction from the fixed end to the free end of the sealing tooth 11, the width of the sealing tooth 11 along the axial direction of the motor shaft 40 remains unchanged or gradually decreases.

[0073] It can be understood that, as Figure 5 and Figure 6As shown, in the direction from the fixed end to the free end of the sealing tooth 11, the width of the sealing tooth 11 in the axial direction of the motor shaft 40 remains unchanged. Thereby, it is ensured that the force generated by the deformation of the sealing tooth 11 is large enough, thus improving the connection and installation reliability between the sealing tooth 11 and the motor shaft 40, and at the same time improving the waterproof sealing effect of the waterproof sealing structure 10; or, as Figure 3 , Figure 4 , Figure 7 and Figure 8 shown, in the direction from the fixed end to the free end of the sealing tooth 11, the width of the sealing tooth 11 in the axial direction of the motor shaft 40 gradually decreases. Thereby, in the direction from the fixed end to the free end of the sealing tooth 11, the degree of deformability of the sealing tooth 11 gradually increases, thus facilitating the assembly of the sealing tooth 11 and the motor shaft 40 and improving the assembly efficiency.

[0074] In some embodiments of the present invention, as Figure 3 , Figure 4 , Figure 7 and Figure 8 shown, in the direction from the fixed end to the free end of the sealing tooth 11, the width of the sealing tooth 11 in the axial direction of the motor shaft 40 gradually decreases, the cross-section of the sealing tooth 11 is trapezoidal, and in the direction from the fixed end to the free end of the sealing tooth 11, the two side walls of the sealing tooth 11 in the axial direction of the motor shaft 40 incline towards each other or one of them inclines towards the direction away from the bearing 20.

[0075] It can be understood that, for example, in the examples shown in Figure 3 and Figure 4 , the two side walls of the sealing tooth 11 in the axial direction of the motor shaft 40 incline towards each other, and for example, in the examples shown in Figure 7 and Figure 8 , one of the two side walls of the sealing tooth 11 in the axial direction of the motor shaft 40 close to the bearing 20 inclines towards the direction away from the bearing 20.

[0076] Thereby, in the direction from the fixed end to the free end of the sealing tooth 11, the degree of deformability of the sealing tooth 11 gradually increases, thus facilitating the assembly of the sealing tooth 11 and the motor shaft 40 and improving the assembly efficiency. Among them, one of the two side walls of the sealing tooth 11 in the axial direction of the motor shaft 40 inclines towards the direction away from the bearing 20, so that the water can be further blocked, and the waterproof sealing effect is further improved.

[0077] In some embodiments of the present invention, as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in the direction from the fixed end to the free end of the sealing teeth 11, the width of the sealing teeth 11 in the axial direction of the motor shaft 40 remains unchanged, and the cross-section of the sealing teeth 11 is rectangular or a parallelogram inclined in the direction away from the bearing 20.

[0078] It can be understood that, as Figure 5 and Figure 6 shown, the cross-section of the sealing teeth 11 is rectangular, making the structure of the sealing teeth 11 more regular, facilitating the production and manufacturing of the seal 1, and improving the production efficiency. As Figure 1 and Figure 2 shown, the cross-section of the sealing teeth 11 is a parallelogram inclined in the direction away from the bearing 20, thereby further blocking water and further improving the waterproof sealing effect. Among them, the cross-section of the sealing teeth 11 refers to the plane where the axis of the sealing teeth 11 is located.

[0079] In some embodiments of the present invention, there are multiple sealing teeth 11 spaced apart in the axial direction of the motor shaft 40. Among the multiple sealing teeth 11, all the sealing teeth 11 may have a gradually decreasing width in the axial direction of the motor shaft 40 in the direction from the fixed end to the free end of the sealing teeth 11. Or all of them may have an unchanged width in the axial direction of the motor shaft 40 in the direction from the fixed end to the free end of the sealing teeth 11. Or some may have a gradually decreasing width in the axial direction of the motor shaft 40 in the direction from the fixed end to the free end of the sealing teeth 11, and some may have an unchanged width in the axial direction of the motor shaft 40 in the direction from the fixed end to the free end of the sealing teeth 11.

[0080] In some embodiments, the motor 100 further includes a rotor 60 and a stator 50. The rotor 60 is sleeved on the motor shaft 40, and the stator 50 is sleeved outside the rotor 60. When the stator 50 coil is energized to generate a rotating magnetic field, the rotor 60 will be affected by the magnetic field and start to rotate, thereby driving the motor shaft 40 to rotate to convert electrical energy into mechanical energy. At the same time, the motor shaft 40 is supported by the bearing 20 to reduce the friction and wear during the rotation of the motor shaft 40, and improve the efficiency and lifespan of the motor 100.

[0081] The air conditioner according to the embodiments of the present invention will be described below.

[0082] The air conditioner according to the embodiments of the present invention includes a motor 100.

[0083] An air conditioner according to an embodiment of the present utility model is provided with a motor 100. A part of the stop portion 13 of the waterproof sealing structure 10 is located radially outside the extension portion 301 and is disposed opposite to the extension portion 301, so that the cooperation between the stop portion 13 and the extension portion 301 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100. And the main body portion 12 of the waterproof sealing structure 10 is located radially inside the extension portion 301 and is disposed opposite to the extension portion 301, so that the main body portion 12 effectively blocks dust, liquid and other foreign matters from contacting the bearing 20 or entering the interior of the motor 100 through the gap between the extension portion 301 and the motor shaft 40, thereby achieving a double waterproof sealing effect and improving the reliability and service life of the air conditioner.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that, include: Motor shaft; A bearing, wherein the bearing is sleeved on the motor shaft, the bearing outer sleeve is provided with a bearing cover, and the bearing cover has an extension portion, the extension portion is located on one side of the axial direction of the bearing and sleeved outside the motor shaft; A sealing and waterproof structure, the sealing and waterproof structure includes a sealing member, the sealing member includes a main body and a stopper, the main body is sleeved on the motor shaft, the stopper is annular, the radial inner end of the stopper is connected to the outer peripheral wall of the main body, along the radial direction of the motor shaft, the main body is located on the radial inner side of the extension part and is arranged opposite to the extension part, and part of the stopper is located on the radial outer side of the extension part and part of it is arranged opposite to the extension part.

2. The motor according to claim 1, characterized in that, The stopper comprises: A first stopper, the first stopper is annular and a radial inner end of which is connected to the outer peripheral wall of the main body; A second stop portion, wherein one end of the second stop portion along the axial direction of the motor shaft is connected to the radial outer end of the first stop portion, and the other end extends toward the bearing and away from the motor shaft. Along the radial direction of the motor shaft, at least a portion of the second stop portion is located radially outside the extension portion and is relatively arranged.

3. The motor according to claim 1, characterized in that, A protrusion is provided on the outer peripheral wall of the main body portion, and the protrusion extends in a ring shape along the circumferential direction of the main body portion. At least a part of the protrusion is arranged opposite to the extension portion in the radial direction.

4. The motor according to claim 3, characterized in that, Along the axial direction of the motor shaft, the extension portion includes a first section and a second section connected in sequence, wherein one end of the first section facing away from the bearing is connected to the second section, and one end of the second section facing away from the first section extends in a direction away from the bearing and away from the motor shaft.

5. The motor according to claim 4, characterized in that, The inner diameter of the first section along the axial direction of the motor shaft remains unchanged, the protrusion includes a first protrusion and a second protrusion, the first protrusion is located on a side of the second protrusion close to the bearing, an end of the first protrusion facing away from the motor shaft exceeds an end of the second protrusion facing away from the motor shaft, and along the radial direction of the motor shaft, the first protrusion is opposite to the first section, and at least a portion of the second protrusion is opposite to the second section.

6. The motor according to claim 5, characterized in that The first protrusion is in gap fit or dynamic sealing contact with the first section.

7. The motor according to claim 5, characterized in that, In the direction from the first protrusion to the second protrusion, a side wall surface of the second protrusion facing away from the first protrusion is inclined toward the direction of the motor shaft.

8. The motor according to claim 5, characterized in that, On a cross section parallel to the axial direction of the motor shaft and passing through the central axis of the motor shaft, a free end surface of the first protrusion is formed as a cylindrical surface; And / or, in the direction from the first protrusion to the second protrusion, a side wall surface of the first protrusion close to the second protrusion is inclined toward the direction of the motor shaft.

9. The motor according to claim 1, characterized in that, Along the axial direction of the motor shaft, one axial end of the main body abuts against the bearing, and the inner circumferential wall of the main body is provided with sealing teeth, which extend along the circumferential direction of the motor shaft and are interference fit with the motor shaft.

10. The motor according to claim 9, characterized in that The sealing teeth are multiple and spaced apart along the axial direction of the motor shaft; And / or, the sealing teeth extend circumferentially around the motor in a ring shape or the sealing teeth include a plurality of sub-teeth spaced apart circumferentially around the motor.

11. The motor according to claim 9, characterized in that, In the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth in the axial direction of the motor shaft remains unchanged or gradually decreases.

12. The motor according to claim 11, characterized in that, In the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth in the axial direction of the motor shaft gradually decreases, the cross-section of the sealing teeth is trapezoidal, and in the direction from the fixed end to the free end of the sealing teeth, the two side walls of the sealing teeth in the axial direction of the motor shaft are inclined towards each other or one of them is inclined in a direction away from the bearing.

13. The motor according to claim 11, characterized in that, In the direction from the fixed end to the free end of the sealing teeth, the width of the sealing teeth in the axial direction of the motor shaft remains unchanged, and the cross-section of the sealing teeth is rectangular or a parallelogram inclined in a direction away from the bearing.

14. An air conditioner, characterized in that, Comprising a motor according to any one of claims 1-13.

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