Motor and air conditioner

Abstract

The invention provides a motor and an air conditioner. The motor comprises a first end cover and a shell. The shell is provided with an integrally formed first mounting angle, and the first end cover is provided with a second mounting angle; after the first end cover serves as an insert and is integrally formed with the shell, the second mounting angle supports the first mounting angle in the axial direction. In the invention, the second mounting angle supports the first mounting angle in the axial direction, and the second mounting angle can effectively disperse stress, so that the stress is prevented from being concentrated at the root of the first mounting angle, and the first mounting angle is prevented from being broken.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to a motor and an air conditioner. Background Technology

[0002] Currently, in both the residential and commercial air conditioning markets, the mainstream trend in motor demand is the shift from metal-cased motors to encapsulated motors. Specifically, the stator core is fixed within a specialized injection mold cavity. The shape of the mold cavity determines the final appearance of the encapsulated housing, including the geometry of the mounting corners. Molten thermosetting engineering plastic is injected into the mold cavity, encapsulating the stator core and forming a sealed, insulating housing that isolates the electrical components from the external environment. The mounting corners on the housing are also injection molded integrally with the housing body during this process. Because the mounting corners are not independent metal components but are integrally molded from the relatively brittle encapsulation material to the housing body, the encapsulated motor is installed on a pre-existing sheet metal structure. Due to the injection molding of the motor housing's mounting corners, it is prone to brittle fracture under poor load transport conditions or long transport distances. The root of the mounting corner is the area of ​​highest stress concentration, where the cross-sectional shape abruptly changes. When subjected to external forces, the stress cannot be effectively dispersed, making it highly susceptible to micro-cracks that quickly propagate. Summary of the Invention

[0003] This invention provides a motor and an air conditioner that can solve the technical problem that the root of the mounting corner of the housing is the area of ​​highest stress concentration, and the mounting corner is prone to brittle fracture.

[0004] This invention provides an electric motor, which includes a first end cover and a housing; The housing has an integrally formed first mounting angle, and the first end cap has a second mounting angle; When the first end cap is integrally formed with the housing as an insert, the second mounting angle supports the first mounting angle axially.

[0005] In some embodiments, the second mounting angle includes a root and a support portion, the root being embedded in the housing and the support portion protruding from the outer wall surface of the housing, the support portion being used to support the first mounting angle.

[0006] In some embodiments, the plane in contact with the first mounting angle is called the support plane, and the area of ​​the support plane is not less than the area of ​​the contact surface corresponding to the first mounting angle.

[0007] In some embodiments, the first end cap is provided with a plurality of second mounting angles at intervals along its circumference, and the housing is formed with a plurality of first mounting angles at intervals along its circumference, with the plurality of second mounting angles supporting the plurality of first mounting angles in the axial direction.

[0008] In some embodiments, in the circumferential direction of the first end cap, a plurality of second mounting angles are integrally connected by a connecting ring, and the connecting ring is embedded in the housing.

[0009] In some embodiments, the first end cap includes a bearing cover and a plurality of connecting brackets, one end of each of the plurality of connecting brackets being connected to the outer edge of the bearing cover, and the other end of each of the plurality of connecting brackets being connected to a second mounting angle; the bearing cover protrudes from the wall of the housing, and the connecting brackets are embedded in the housing.

[0010] In some embodiments, the connecting bracket is L-shaped and includes a vertical side and a horizontal side connected to each other. The end of the vertical side away from the horizontal side is connected to the root of the second mounting angle, and the end of the horizontal side away from the vertical side is connected to the outer edge of the bearing cover.

[0011] In some embodiments, a conductive connector and a second end cap are also included. The second end cap is mounted on one end of the housing away from the first end cap. The conductive connector is embedded in the housing. One end of the conductive connector is connected to the first end cap, and the other end of the conductive connector is connected across the second end cap, so that the bearing chambers of the first end cap and the second end cap form an electrical connection.

[0012] In some embodiments, the conductive connector has a rectangular structure and is made of a conductive material with elastic deformation capability. When the conductive connector is connected to the second end cap, it can undergo elastic deformation to generate continuous contact pressure.

[0013] An air conditioner includes a motor, wherein the motor is the motor described above.

[0014] The electric motor and air conditioner provided by this invention have the following beneficial effects: In this invention, the upper surface of the second mounting angle directly contacts and closely fits the lower surface of the first mounting angle. When the motor is subjected to external loads (such as vibration or collision during transportation), the stress is first transmitted to the second mounting angle. The second mounting angle is made of metal, which has higher strength and toughness than the plastic encapsulation material of the first mounting angle. Therefore, the second mounting angle can effectively disperse stress and avoid stress concentration at the root of the first mounting angle (stress concentration area). Moreover, the second mounting angle supports the first mounting angle axially, and the two overlap at least partially in the axial direction to form a support structure. This structure is similar to adding a support beam below the first mounting angle, which significantly enhances the load-bearing capacity of the first mounting angle. Since the second mounting angle can directly bear and transmit most of the stress, the plastic encapsulation material of the first mounting angle will not develop microcracks or break due to excessive stress, thereby improving the overall reliability. The first mounting angle is made of a relatively brittle plastic encapsulation material, which is prone to brittle fracture under poor load transportation conditions or long transportation routes. The presence of the second mounting angle allows the stress of the first mounting angle to be effectively dispersed and transferred when subjected to external forces, preventing the first mounting angle from fracture due to stress concentration. By protecting the first mounting angle, the second mounting angle indirectly extends the service life of the motor. Even under harsh operating environments or transportation conditions, the mounting angle part of the motor can maintain good performance, reducing the repair or replacement costs caused by damage to the mounting angle. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a motor according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the motor according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the first end cap according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connecting bracket and the second mounting angle according to an embodiment of the present invention.

[0017] Attached Figure: 1-Housing; 101-First mounting angle; 2-First end cap; 201-Second mounting angle; 211-Root; 212-Supporting part; 202-Bearing cover; 203-Connecting bracket; 231-Vertical side; 232-Horizontal side; 3-Connecting ring; 4-Conductive connector; 5-Second end cap. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0020] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0021] See also Figures 1 to 4As shown, according to an embodiment of the present invention, a motor is provided, which includes a first end cover 2 and a housing 1; the housing 1 has an integrally formed first mounting angle 101, and the first end cover 2 has a second mounting angle 201; when the first end cover 2 is integrally formed with the housing 1 as an insert, the second mounting angle 201 supports the first mounting angle 101 axially, and the first mounting angle 101 and the second mounting angle 201 overlap at least partially in the axial direction, forming a support structure that enhances the load-bearing capacity of the first mounting angle 101. In this embodiment, the support can be in various specific structural forms such as lifting, supporting, and bearing. The setting of the second mounting angle 201 can be optimized according to the specific application scenario and usage requirements of the motor. For example, the size, shape, and material of the second mounting angle 201 can be adjusted according to different load conditions to achieve the best protection effect. The material of the first end cover 2 is hot-dip galvanized sheet or galvanized cold-rolled steel sheet, preferably made of metal material, which can provide good support. In other embodiments, the material of the first end cover 2 can also be plastic or resin.

[0022] Specifically, the cavity shape of the injection mold is used to form the overall structure of the motor housing 1, including details such as the shape and position of the first mounting angle 101, to ensure a good fit with the first end cap 2. The first end cap 2 is processed according to the set requirements to have a second mounting angle 201. The shape and size of the second mounting angle 201 match the first mounting angle 101 of the housing 1, and it can support the first mounting angle 101 axially and at least partially overlap it axially. The processed first end cap 2 is placed into the cavity of the injection mold, ensuring that the second mounting angle 201 of the first end cap 2 is in the predetermined position and fits with the mold cavity. The heated and molten thermosetting engineering plastic is injected into the mold cavity. During the injection molding process, the plastic melt fills the entire cavity under pressure, including the gaps around the first end cap 2 and the forming area of ​​the first mounting angle 101. After injection molding, the first end cap 2 and the housing 1 are integrally formed through the solidification of the plastic, and the first mounting angle 101 and the second mounting angle 201 form a mating relationship. The second mounting angle 201 of the first end cover 2 is located axially below the first mounting angle 101. The upper surface of the second mounting angle 201 is in direct contact and tightly fitted with the lower surface of the first mounting angle 101. The second mounting angle 201 of the metal end cover directly bears and transmits most of the stress. This structure allows the second mounting angle 201 to directly bear and transmit most of the stress when the motor is subjected to external loads, thereby effectively protecting the first mounting angle 101 and preventing it from breaking due to stress concentration.

[0023] In this embodiment, the upper surface of the second mounting angle 201 directly contacts and closely fits the lower surface of the first mounting angle 101. When the motor is subjected to external loads (such as vibration or collision during transportation), the stress will be transferred to the second mounting angle 201 first. The second mounting angle 201 is made of metal. Compared with the plastic encapsulation material of the first mounting angle 101, metal has higher strength and toughness. Therefore, the second mounting angle 201 can effectively disperse stress and avoid stress concentration at the root 211 (stress concentration area) of the first mounting angle 101. Moreover, the second mounting angle 201 supports the first mounting angle 101 axially. The two overlap at least partially in the axial direction to form a support structure. This structure is similar to adding a support beam below the first mounting angle 101, which significantly enhances the load-bearing capacity of the first mounting angle 101. Since the second mounting angle 201 can directly bear and transmit most of the stress, the plastic encapsulation material of the first mounting angle 101 will not produce microcracks or breakage due to excessive stress, thereby improving the overall reliability. The first mounting angle 101 is made of a relatively brittle encapsulating material, which is prone to brittle fracture under poor load transportation conditions or long transportation routes. The presence of the second mounting angle 201 effectively disperses and transfers the stress of the first mounting angle 101 when it is subjected to external force, preventing the first mounting angle 101 from fracture due to stress concentration. By protecting the first mounting angle 101, the second mounting angle 201 indirectly extends the service life of the motor. Even under harsh operating environments or transportation conditions, the mounting angle part of the motor can maintain good performance, reducing the maintenance or replacement costs caused by damage to the mounting angle.

[0024] In this embodiment, the first end cap 2 is integrally formed with the housing 1 as an insert. This arrangement eliminates any additional connection gaps or weak points between the end cap and the housing 1, forming a strong overall structure. This integrated structure can better disperse stress and avoid stress concentration when subjected to external forces. The presence of the second mounting angle 201 provides additional support for the first mounting angle 101, further enhancing the structural strength of the mounting angle area. When the motor is subjected to external loads, the second mounting angle 201 can directly bear and transmit most of the stress at the root 211 of the first mounting angle 101, reducing the burden on the first mounting angle 101. The combination of the integrated structure and the supporting role of the second mounting angle 201 gives the motor higher overall structural strength and stability. Even in harsh operating environments or transportation conditions, the motor is less likely to fail due to damage to the mounting angle. During the injection molding process, the first end cap 2 and the housing 1 form an integral whole. The plastic material tightly connects the end cap and the housing 1 during the curing process. This arrangement allows the stress to be evenly distributed between the end cap and the housing 1, rather than concentrated at a certain point. The metal material of the second mounting angle 201 has high strength and toughness, which can effectively disperse the stress transmitted to the first mounting angle 101. When the motor is subjected to external load, the second mounting angle 201 first bears the stress and transmits it to other parts of the end cap and the housing 1, avoiding stress concentration at the root 211 of the first mounting angle 101. The integrated structure ensures that the stress is evenly distributed throughout the motor structure, while the supporting role of the second mounting angle 201 further disperses the stress transmitted to the first mounting angle 101. This dual mechanism effectively avoids stress concentration and significantly reduces the risk of the first mounting angle 101 breaking due to stress concentration.

[0025] See also Figures 1 to 3 As shown, the second mounting angle 201 includes a root 211 and a support 212. The root 211 is embedded in the housing 1, and the support 212 protrudes from the outer wall surface of the housing 1. The support 212 is used to support the first mounting angle 101. The second mounting angle 201 extends in the radial direction of the housing 1. The second mounting angle 201 is a triangular protrusion and is provided with a mounting hole.

[0026] Specifically, the first end cap 2 is placed into the cavity of the injection mold, ensuring that the root 211 of the second mounting angle 201 is accurately embedded in the predetermined position of the housing 1. The support portion 212 is located on the outer wall of the cavity. During the injection molding process, the molten plastic fills the entire cavity under pressure, including the gap around the first end cap 2 and the molding areas of the first mounting angle 101 and the second mounting angle 201. When the motor is subjected to external loads (such as transportation vibration, collision, external force during installation, etc.), the stress is first applied to the mounting angle area of ​​the motor, especially the root 211 of the first mounting angle 101. Since the first mounting angle 101 is made of a relatively brittle molding material, stress concentration can easily lead to its breakage. The supporting portion 212 of the second mounting angle 201 axially supports the first mounting angle 101. Its upper surface is in direct contact and tightly fitted with the lower surface of the first mounting angle 101. When an external load is applied, the stress is first transmitted to the supporting portion 212 of the second mounting angle 201. The second mounting angle 201 is made of metal, which has high strength and toughness, effectively bearing and dispersing stress, and avoiding stress concentration. The root portion 211 of the second mounting angle 201 is embedded in the housing 1 and integrally formed with the housing 1. When the stress is transmitted to the supporting portion 212, some of the stress will be further transmitted to the housing 1 through the root portion 211. Since the root portion 211 and the housing 1 are integrally formed, the stress can be further dispersed through the entire structure of the housing 1 during the transmission process. The housing 1 itself has a certain strength and rigidity, which can bear and disperse the transmitted stress. Through the overall structure of the housing 1, the stress is further dispersed to other parts of the motor, avoiding the problem of excessive local stress.

[0027] In this embodiment, the root 211 of the second mounting angle 201 is embedded inside the housing 1 and integrally formed with the housing 1. This arrangement makes the second mounting angle 201 and the housing 1 form a whole, enhancing the stability of the structure. The setting of the root 211 ensures that during the injection molding process, the plastic material can fully wrap the root 211, making it tightly bonded to the housing 1. The shape and size of the root 211 are closely matched with the cavity of the housing 1, ensuring that after molding, the root 211 can be firmly embedded in the housing 1 without loosening or shifting. The support portion 212 is a key part of the second mounting angle 201. The support portion 212 axially supports the first mounting angle 101. The upper surface of the support portion 212 directly contacts and tightly fits the lower surface of the first mounting angle 101. The shape and size of the support portion 212 allow it to fit snugly against the lower surface of the first mounting angle 101. When the motor is subjected to external loads, the support portion 212 can directly bear and transmit most of the stress, thus protecting the first mounting angle 101 from fracture caused by stress concentration. When the motor is subjected to external loads (such as transportation vibrations, collisions, etc.), the support portion 212 of the second mounting angle 201 bears the stress first. Because the support portion 212 is made of metal, it has high strength and toughness, effectively dispersing the stress. The stress is transmitted through the support portion 212 to the root portion 211, and then through the root portion 211 to the housing 1. This multi-stage stress transmission path ensures that the stress is evenly distributed throughout the structure, preventing stress concentration at the root portion 211 of the first mounting angle 101. The root 211 of the second mounting angle 201 is embedded in the housing 1, and the supporting part 212 supports the first mounting angle 101 from the axial direction, forming a double support structure. This structure significantly enhances the load-bearing capacity of the motor mounting angle, enabling it to withstand greater external loads. Through this setting, the overall stability of the motor is significantly improved, and even in harsh operating environments or transportation conditions, the motor is not prone to structural failure due to damage to the mounting angle.

[0028] See also Figures 1 to 3 As shown, the plane in contact between the support portion 212 and the first mounting angle 101 is the support plane, and the area of ​​the support plane is not less than the area of ​​the contact surface corresponding to the first mounting angle 101.

[0029] In this embodiment, the area of ​​the supporting plane is not less than the area of ​​the contact surface corresponding to the first mounting angle 101. This means that the stress of the first mounting angle 101 can be evenly distributed across a larger supporting plane. This configuration significantly reduces the stress per unit area and avoids the occurrence of stress concentration points. By increasing the contact area, the stress is evenly distributed on the supporting plane, reducing the risk of microcracks or fractures caused by stress concentration. This evenly distributed stress effectively protects the first mounting angle 101 and extends its service life. The first mounting angle 101 is made of a relatively brittle molding material, which is prone to fracture due to stress concentration. By increasing the area of ​​the supporting plane, the second mounting angle 201 can more effectively distribute the stress, reducing the stress on the first mounting angle 101 and thus protecting it from damage. By adjusting the area of ​​the supporting plane, the configuration can be optimized according to the specific operating conditions and load requirements of the motor. For example, in applications with high loads, the area of ​​the supporting plane can be appropriately increased to further enhance the load-bearing capacity.

[0030] See also Figures 1 to 3 As shown, the first end cap 2 is provided with a plurality of second mounting angles 201 at intervals along its circumference, and the housing 1 is formed with a plurality of first mounting angles 101 at intervals along its circumference. The plurality of second mounting angles 201 support the plurality of first mounting angles 101 in the axial direction respectively.

[0031] Specifically, each first mounting angle 101 is supported by a corresponding second mounting angle 201. The supporting portion 212 of the second mounting angle 201 supports the first mounting angle 101 axially, and its upper surface is in direct contact and tight fit with the lower surface of the first mounting angle 101. Since multiple second mounting angles 201 support multiple first mounting angles 101 respectively, the stress is distributed to multiple support points instead of being concentrated at a single point. The multiple second mounting angles 201 are evenly distributed circumferentially, so that the stress is evenly distributed circumferentially. The supporting portion 212 of each second mounting angle 201 can share a portion of the stress, avoiding stress concentration at a single mounting angle. The root 211 of each second mounting angle 201 is embedded in the housing 1 and integrally formed with the housing 1. When the stress is transmitted to the supporting portion 212, part of the stress will be further transmitted to the housing 1 through the root 211. Since the root 211 and the housing 1 are integrally formed, the stress can be further dispersed through the entire structure of the housing 1 during the transmission process.

[0032] In this embodiment, multiple second mounting angles 201 support multiple first mounting angles 101, distributing stress across multiple support points rather than concentrating it at a single point. This multi-point support significantly reduces stress concentration at each support point, preventing microcracks or fractures caused by stress concentration. The multiple second mounting angles 201 are evenly distributed circumferentially, ensuring uniform stress distribution. Each second mounting angle 201's supporting portion 212 can share a portion of the stress, preventing stress concentration at any single mounting angle. The second mounting angles 201 are made of metal, possessing high strength and toughness. By supporting the first mounting angles 101 with multiple second mounting angles 201, each second mounting angle 201 can effectively withstand and transmit external loads, significantly improving the overall load-bearing capacity of the motor. The multi-point support makes the structure of the motor mounting angle area more stable, reducing the risk of structural failure due to excessive local stress. Through multi-point support and stress dispersion, the reliability of the motor during transportation and use is significantly improved. Even in harsh operating environments or under frequent vibration conditions, the motor is less prone to structural failure due to damage to the mounting angles. By adjusting the number and position of the second mounting angles 201, the settings can be optimized according to the specific operating conditions and load requirements of the motor. For example, in applications with heavy loads, the number of second mounting angles 201 can be appropriately increased to further enhance the load-bearing capacity.

[0033] See also Figures 1 to 3 As shown, in the circumferential direction of the first end cap 2, multiple second mounting angles 201 are integrally connected by a connecting ring 3, and the connecting ring 3 is embedded in the housing 1. Preferably, the connecting ring 3 is connected to the inner wall surface of the root 211 of the second mounting angle 201. After the connecting ring 3 is pre-connected to the second mounting angle 201, it is placed into the injection mold and injection molded with the housing 1. The connecting ring 3 is made of metal. The connecting ring 3 is a ring structure whose shape matches the circumferential contour of the first end cap 2. The outer diameter of the connecting ring 3 is slightly smaller than the inner diameter of the housing 1 to ensure smooth embedding into the housing 1 during injection molding. The connection between the connecting ring 3 and the second mounting angle 201 can be achieved by welding, threaded connection, or mechanical fixing, the specific choice depending on the material properties and setting requirements.

[0034] Specifically, the stress initially concentrates at the root 211 of the first mounting angle 101. Since multiple second mounting angles 201 support multiple first mounting angles 101 respectively, the stress is distributed across multiple support points. The connecting ring 3 connects the multiple second mounting angles 201 into a single unit, allowing the stress to be further dispersed through the connecting ring 3. The connecting ring 3 is evenly distributed circumferentially, ensuring uniform stress distribution in the circumferential direction. The annular structure of the connecting ring 3 allows the stress to be evenly transmitted along the ring direction. The root 211 of each second mounting angle 201 is embedded in the housing 1, integrally formed with the housing 1. When the stress is transmitted to the support portion 212, some of the stress will be further transmitted to the housing 1 through the root 211.

[0035] In this embodiment, multiple second mounting corners 201 are connected into a whole by connecting rings 3, making the structure of the entire mounting corner area more compact and stable. This design avoids structural failure caused by damage to a single mounting corner, improving overall reliability. The connecting rings 3 are evenly distributed circumferentially, ensuring uniform stress distribution and preventing stress concentration at a single point. The stress is first transferred from the first mounting corner 101 to the support portion 212 of the second mounting corner 201, and then further dispersed through the connecting rings 3. The metal material of the connecting rings 3 has high strength and toughness, effectively bearing and transmitting stress. The annular structure of the connecting rings 3 allows stress to be evenly transmitted along the ring direction, preventing stress concentration points. The connecting rings 3 are embedded in the housing 1, forming an integral structure with the housing 1. This integrated design avoids stress concentration at the connection point, significantly improving the structural stability of the motor mounting corner area. Multiple second mounting corners 201 support multiple first mounting corners 101 respectively, ensuring uniform stress distribution circumferentially and further enhancing structural stability.

[0036] See also Figures 1 to 4 As shown, the first end cover 2 includes a bearing cover body 202 and multiple connecting brackets 203. One end of each connecting bracket 203 is connected to the outer edge of the bearing cover body 202, and the other end of each connecting bracket 203 is connected to a second mounting angle 201. The bearing cover body 202 protrudes from the wall of the housing 1, and the connecting brackets 203 are embedded in the housing 1. By adjusting the number and position of the connecting brackets 203, the settings can be optimized according to the specific operating conditions and load requirements of the motor. For example, in applications with large loads, the number or thickness of the connecting brackets 203 can be appropriately increased to further improve the load-bearing capacity. The connecting brackets 203 can be made of metal materials, such as aluminum alloy, stainless steel, or high-strength steel. Metal materials have high strength and toughness, and can effectively withstand and transmit stress. By selecting different materials, performance can be optimized according to specific needs.

[0037] Specifically, the first end cap 2 includes a bearing cover 202 and multiple connecting brackets 203. One end of each connecting bracket 203 is connected to the outer edge of the bearing cover 202, and the other end is connected to a second mounting angle 201. The injection mold has corresponding embedding positions to accommodate the connecting brackets 203. The first end cap 2 is placed in a predetermined position on the housing 1, ensuring that the bearing cover 202 protrudes from the wall of the housing 1 after molding. Molten plastic material is injected into the mold cavity to ensure that the connecting brackets 203 are tightly bonded to the housing 1. When the motor is subjected to external loads (such as transportation vibration, collision, external force during installation, etc.), the stress is first applied to the mounting angle area of ​​the motor, especially the root 211 of the first mounting angle 101. Since the first mounting angle 101 is made of a relatively brittle plastic sealing material, stress concentration can easily lead to its fracture. Each first mounting angle 101 is supported by a corresponding second mounting angle 201. The supporting portion 212 of the second mounting angle 201 supports the first mounting angle 101 axially, and its upper surface is in direct contact and tight fit with the lower surface of the first mounting angle 101. Since multiple second mounting angles 201 support multiple first mounting angles 101 respectively, the stress is distributed to multiple support points instead of being concentrated at a single point. The connecting bracket 203 connects the second mounting angles 201 to the bearing cover 202, allowing the stress to be further dispersed through the connecting bracket 203. The stress is transmitted from the second mounting angles 201 to the connecting bracket 203, and then through the connecting bracket 203 to the bearing cover 202. The bearing cover 202 protrudes from the wall of the housing 1 and can withstand and disperse the transmitted stress.

[0038] In this embodiment, multiple connecting brackets 203 connect the bearing cover 202 to the second mounting angle 201, making the structure of the entire first end cover 2 more compact and stable. This arrangement avoids structural failure due to damage to a single component, improving overall reliability. The connecting brackets 203 are evenly distributed circumferentially, ensuring uniform stress distribution and preventing stress concentration at a single point. Stress is first transmitted from the first mounting angle 101 to the support portion 212 of the second mounting angle 201, and then further dispersed through the connecting brackets 203. The metal material of the connecting brackets 203 has high strength and toughness, effectively bearing and transmitting stress. The arrangement of the connecting brackets 203 allows stress to be evenly transmitted along its length, preventing stress concentration points. The connecting brackets 203 are embedded in the housing 1, forming an integral structure with the housing 1. This integrated design avoids stress concentration at the connection point, significantly improving the structural stability of the motor mounting angle area. Multiple connecting brackets 203 connect the second mounting angle 201 and the bearing cover 202 respectively, ensuring uniform stress distribution circumferentially and further enhancing structural stability.

[0039] See also Figures 1 to 4As shown, when the motor is installed vertically, the first end cover 2 is installed on the top of the housing 1, the bearing cover 202 protrudes from the center of the housing, and the connecting bracket 203 is L-shaped. The connecting bracket 203 includes a vertical side 231 and a horizontal side 232 connected to each other. The end of the vertical side 231 away from the horizontal side 232 is connected to the root 211 of the second mounting angle 201, and the end of the horizontal side 232 away from the vertical side 231 is connected to the outer edge of the bearing cover 202. Stress is transmitted through the root 211 of the second mounting angle 201 to the vertical side 231 of the connecting bracket 203, through the vertical side 231 to the horizontal side 232 of the connecting bracket 203, and then to the bearing cover 202. Some stress is further transmitted to the housing 1 through the root 211. The overall structure of the housing 1 further disperses the stress to other parts of the motor.

[0040] In this embodiment, the vertical edge 231 is directly connected to the root 211 of the second mounting angle 201, which can effectively transfer and disperse stress. The vertical edge 231 allows stress to be evenly transferred along its length, avoiding stress concentration at a certain point. The horizontal edge 232 is connected to the outer edge of the bearing cover 202, further enhancing the stability of the structure. The horizontal edge 232 also allows stress to be evenly transferred along its length, avoiding stress concentration at a certain point. The L-shaped connecting bracket 203 makes the entire structure of the first end cover 2 more compact and stable. Through the interconnection of the vertical edge 231 and the horizontal edge 232, stress can be more evenly distributed throughout the structure, significantly enhancing the structural stability of the motor mounting angle area. The stress is first transferred from the first mounting angle 101 to the support part 212 of the second mounting angle 201, then through the vertical side 231 to the horizontal side 232, and finally through the horizontal side 232 to the bearing cover 202. This multi-level dispersion mechanism significantly reduces the occurrence of stress concentration points. The L-shaped connecting bracket 203 enables the stress to be evenly transferred along the vertical side 231 and the horizontal side 232, avoiding stress concentration at a certain point. This design not only improves the efficiency of stress transfer, but also reduces the risk of structural damage caused by stress concentration.

[0041] See also Figures 1 to 3 As shown, it also includes a conductive connector 4 and a second end cap 5. The second end cap 5 is installed on the end of the housing 1 opposite to the first end cap 2. The conductive connector 4 is embedded in the housing 1, and one end of the conductive connector 4 is connected to the first end cap 2. Specifically, the conductive connector 4 is connected to the connecting ring 3 or to the second mounting angle 201. The other end of the conductive connector 4 spans across the second end cap 5, so that the bearing chambers of the first end cap 2 and the second end cap 5 form an electrical connection. The motor is vertically arranged, the first end cap 2 is formed on the top of the housing 1, and the second end cap 5 is installed on the bottom of the housing 1.

[0042] Specifically, because the motor requires conductive tape to connect the front and rear end covers to prevent shaft voltage erosion, the distance between the motor's outer diameter and the sheet metal structure's inner diameter is relatively small during motor installation. This makes it easy for the conductive tape connecting the front and rear end covers to be damaged during placement and installation, leading to the failure of shaft voltage protection. The bearing chambers of the first end cover 2 and the second end cover 5 are connected by conductive connector 4 to form an electrical connection.

[0043] In this embodiment, the conductive connector 4 effectively prevents potential differences between bearing chambers, avoiding arc discharge or electro-corrosion caused by potential differences. Potential differences cause electric sparks on the bearing surface, which can damage the bearing surface and affect the motor's service life. The electrical connection guides the potential difference to the motor's grounding system, protecting the bearing from electro-corrosion. Electro-corrosion caused by potential differences is a common cause of motor bearing failure. The electrical connection effectively reduces this risk, improving the motor's reliability and service life. The electrical connection ensures that the potential of the bearing chambers remains consistent during motor operation, avoiding instability caused by potential differences and making the motor run more smoothly. The conductive connector 4 not only provides electrical connection but also strengthens the structural connection between the first end cover 2 and the second end cover 5. This design makes the overall structure of the motor more stable, reducing structural loosening caused by vibration or external forces. Through the conductive connector 4 embedded in the housing 1, the first end cover 2 and the second end cover 5 form a whole, further enhancing the motor's structural stability.

[0044] See also Figures 1 to 3 As shown, the conductive connector 4 has a rectangular structure and is made of a conductive material with elastic deformation capability. When the conductive connector 4 is connected to the second end cap 5, it can undergo elastic deformation to generate continuous contact pressure. Specifically, the conductive connector 4 can be made of a metal sheet with excellent conductivity and elasticity, such as beryllium copper or phosphor bronze, by stamping.

[0045] In this embodiment, the conductive connector 4 is made of a conductive material with elastic deformation capability. When connected to the second end cover 5, it can undergo elastic deformation. This elastic deformation allows the conductive connector 4 to fit tightly against the surface of the second end cover 5, ensuring good electrical contact. The continuous contact pressure generated by the elastic deformation can effectively prevent loosening of the contact due to vibration or external force, ensuring the reliability of the electrical connection. Through the continuous contact pressure generated by the elastic deformation, the conductive connector 4 can ensure a stable electrical connection between the bearing chambers of the first end cover 2 and the second end cover 5. This stable electrical connection can effectively prevent arc discharge or electro-corrosion caused by potential difference. Through the stable electrical connection, the potential difference can be guided to the grounding system of the motor, protecting the bearing from electro-corrosion. The elastic deformation capability allows the conductive connector 4 to adapt to different installation tolerances. Even if there are certain errors during installation, the conductive connector 4 can compensate for these errors through elastic deformation, ensuring good electrical contact. The elastic deformation capability also allows the conductive connector 4 to adapt to different environmental conditions, such as temperature changes and mechanical vibration. This adaptability further improves the reliability and stability of the motor.

[0046] An air conditioner includes a motor, which is the motor described above. For example, in an air conditioner with a top-discharge structure, the weight of the fan blades and the motor is distributed across four first mounting angles 101, with stress concentrated at the root of each mounting angle. The upper surface of the second mounting angle 201 is in direct contact with and tightly fitted to the lower surface of the first mounting angle 101. When the motor is subjected to external loads (such as vibration or collision during transportation), the stress will be transferred to the second mounting angle 201 first. The second mounting angle 201 is made of metal, which has higher strength and toughness than the plastic encapsulation material of the first mounting angle 101. Therefore, the second mounting angle 201 can effectively disperse stress and avoid stress concentration at the root 211 (stress concentration area) of the first mounting angle 101. Moreover, the second mounting angle 201 supports the first mounting angle 101 axially, and the two overlap at least partially in the axial direction to form a support structure. This structure is similar to adding a support beam below the first mounting angle 101, which significantly enhances the load-bearing capacity of the first mounting angle 101. Since the second mounting angle 201 can directly bear and transmit most of the stress, the plastic encapsulation material of the first mounting angle 101 will not develop microcracks or break due to excessive stress, thereby improving the overall reliability. The first mounting angle 101 is made of a relatively brittle encapsulating material, which is prone to brittle fracture under poor load transportation conditions or long transportation routes. The presence of the second mounting angle 201 effectively disperses and transfers the stress of the first mounting angle 101 when it is subjected to external force, preventing the first mounting angle 101 from fracture due to stress concentration. By protecting the first mounting angle 101, the second mounting angle 201 indirectly extends the service life of the motor. Even under harsh operating environments or transportation conditions, the mounting angle part of the motor can maintain good performance, reducing the maintenance or replacement costs caused by damage to the mounting angle.

[0047] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An electric machine characterized by The utility model relates to a bearing housing, including: a first end cover (2) and a shell (1); the shell (1) has integrally formed first mounting angle (101), the first end cover (2) has second mounting angle (201); when the first end cover (2) is integrally formed with the shell (1) as an insert, the second mounting angle (201) supports the first mounting angle (101) from the axial direction.

2. The electric machine of claim 1, wherein, The second mounting angle (201) includes a root (211) and a supporting portion (212), the root (211) is embedded in the shell (1), the supporting portion (212) protrudes from the outer wall surface of the shell (1), and the supporting portion (212) is used for supporting the first mounting angle (101).

3. The electric machine of claim 2, wherein, The plane where the supporting portion (212) contacts the first mounting angle (101) is a supporting plane, and the area of the supporting plane is not less than the area of the corresponding contact surface of the first mounting angle (101).

4. The electric machine of claim 1, wherein, The first end cover (2) is provided with a plurality of second mounting angles (201) along the circumferential direction, the shell (1) is integrally formed with a plurality of first mounting angles (101) along the circumferential direction, and the plurality of second mounting angles (201) respectively support the plurality of first mounting angles (101) in the axial direction.

5. The electric machine of claim 4, wherein, In the circumferential direction of the first end cover (2), the plurality of second mounting angles (201) are integrally connected through a connecting ring (3), and the connecting ring (3) is embedded in the shell (1).

6. The electric machine of claim 4, wherein, The first end cover (2) includes a bearing cover body (202) and a plurality of connecting supports (203), one end of each of the plurality of connecting supports (203) is connected with the outer edge of the bearing cover body (202), the other end of each of the plurality of connecting supports (203) is respectively connected with one second mounting angle (201), the bearing cover body (202) protrudes from the wall of the shell (1), and the connecting supports (203) are embedded in the shell (1).

7. The electric machine of claim 6, wherein, The connecting support (203) is L-shaped, and the connecting support (203) includes a vertical edge (231) and a horizontal edge (232) connected with each other, one end of the vertical edge (231) away from the horizontal edge (232) is connected with the root (211) of the second mounting angle (201), and one end of the horizontal edge (232) away from the vertical edge (231) is connected with the outer edge of the bearing cover body (202).

8. The electric machine of claim 1, wherein, Further including a conductive connecting piece (4) and a second end cover (5), the second end cover (5) is installed at one end of the shell (1) away from the first end cover (2), the conductive connecting piece (4) is embedded in the shell (1), one end of the conductive connecting piece (4) is connected with the first end cover (2), and the other end of the conductive connecting piece (4) is connected across the second end cover (5), so that the bearing chambers of the first end cover (2) and the second end cover (5) are electrically connected.

9. The electric machine of claim 8, wherein, The conductive connecting piece (4) is in a rectangular structure, and is made of a conductive material with elastic deformation capability, and can be elastically deformed to generate a continuous contact pressure when the conductive connecting piece (4) is connected with the second end cover (5).

10. An air conditioner comprising a motor, characterized by The motor is the motor according to any one of claims 1 to 9.

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