Oil injection ring structure of oil-cooled motor and oil-cooled motor with same

Abstract

The utility model discloses an oil injection ring structure of oil cooling motor and oil cooling motor with it, the oil injection ring structure includes: oil injection ring, the surface of one side of oil injection ring axial is formed as first sealing surface, first sealing ring, first sealing ring is located first sealing surface, wherein, first sealing ring with oil injection ring is configured as vulcanization integral, according to the oil injection ring structure of oil cooling motor of the utility model, by setting up oil injection ring and first sealing ring, first sealing ring with oil injection ring is configured as vulcanization integral, simple structure makes first sealing ring with oil injection ring can be connected together stably and reliably and makes the sealing effect of first sealing ring get good promotion, simultaneously, very goodly avoid the situation that first sealing ring appears to fall off and manual assembly installation is not in position when assembling, make oil injection ring structure assembly more convenient and easy, and assembly efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an oil injection ring structure for an oil-cooled motor and an oil-cooled motor having the same structure. Background Technology

[0002] As a core component of electric drive systems, new energy oil-cooled motors have shown significant technological advancements in recent years in terms of efficiency improvement, power density optimization, and integrated design. The reliability of oil-cooled motors directly affects the performance, lifespan, and safety of the entire vehicle. With continuous technological progress, oil-cooled motors are constantly being optimized in terms of heat dissipation efficiency, material temperature resistance, and sealing structure design. The requirements for sealing and cooling of oil-cooled motors are becoming increasingly stringent. As a key cooling component in oil-cooled motors, the oil injection ring is mainly used to precisely spray cooling oil onto heat-generating parts such as the motor stator windings to improve heat dissipation efficiency and ensure the reliability of motor operation. To prevent cooling oil leakage and ensure a seal with the housing and the axial mounting surface of the stator core to form a sealed oil passage and maintain the pressure within the oil passage, a sealing ring needs to be installed on the oil injection ring for sealing. However, during assembly, manual assembly is required, which is not easy to assemble properly and the sealing ring is prone to falling off, making the assembly of the sealing ring difficult and resulting in poor sealing effect after assembly. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an oil injection ring structure for an oil-cooled motor. This oil injection ring structure effectively avoids manual assembly of the sealing ring and the possibility of the sealing ring falling off during assembly, making the sealing ring easier to assemble and resulting in a better sealing effect after assembly.

[0004] This utility model also proposes an oil-cooled motor having the above-mentioned oil injection ring structure.

[0005] According to the first aspect of the present invention, the oil injection ring structure includes: an oil injection ring, wherein one side surface of the oil injection ring is formed as a first sealing surface; and a first sealing ring disposed on the first sealing surface, wherein the first sealing ring and the oil injection ring are configured to be vulcanized into a single piece.

[0006] According to the oil injection ring structure of the oil-cooled motor of this utility model, by setting an oil injection ring and a first sealing ring, the first sealing ring and the oil injection ring are configured as a vulcanized integral part, which is simple in structure, so that the first sealing ring and the oil injection ring can be stably and reliably connected together and the sealing effect of the first sealing ring is greatly improved. At the same time, it effectively avoids the situation of the first sealing ring falling off during assembly and improper manual assembly, making the assembly of the oil injection ring structure more convenient and easier, and the assembly efficiency higher.

[0007] In some embodiments of this utility model, the first sealing surface is provided with a recessed first mounting groove, the first mounting groove extends in a ring shape along the circumference of the oil injection ring, and a portion of the first sealing ring is embedded in the first mounting groove.

[0008] In some embodiments of this utility model, the oil injection ring has a hollow oil cavity, a plurality of oil injection holes are provided on the radially inner side of the oil injection ring, and a plurality of oil inlet holes are provided on the radially outer side of the oil injection ring. The plurality of oil injection holes and the plurality of oil inlet holes are arranged at intervals along the circumference of the oil injection ring. In the axial direction of the oil injection ring, a portion of the outer circumferential surface of the oil injection ring protrudes radially outward to form a mounting boss. The end face of the mounting boss is formed as a second sealing surface. The second sealing surface is adapted to be sealed and connected to the inner wall of the housing of the oil-cooled motor. The other portion of the outer circumferential surface is provided with the oil inlet holes.

[0009] In one embodiment of the present invention, the oil injection ring structure further includes a second sealing ring, and the oil injection ring is configured to abut against the inner wall of the housing through the second sealing ring.

[0010] In some examples of this utility model, the second sealing surface is provided with a recessed second mounting groove, the second mounting groove extends in a ring shape along the circumference of the oil injection ring, and a portion of the second sealing ring is embedded in the second mounting groove.

[0011] In some examples of this utility model, the second sealing ring is an O-ring.

[0012] In some examples of this invention, the second sealing ring is configured to be vulcanized integrally with the oil injection ring.

[0013] In some embodiments of this utility model, the oil injection ring is an aluminum alloy part.

[0014] In some embodiments of this utility model, the oil injection ring is provided with a positioning mark groove, which is adapted to cooperate with the housing positioning groove of the oil-cooled motor to position and assemble the oil injection ring structure.

[0015] According to a second aspect of the present invention, an oil-cooled motor includes: a housing having a receiving cavity; a stator assembly disposed within the receiving cavity and mounted on the housing, the stator assembly including a stator core; and an oil injection ring structure for the oil-cooled motor according to a first aspect of the present invention, the oil injection ring structure being disposed on both sides of the stator assembly in a first direction, the oil injection ring abutting against the end face of the stator core through a first sealing ring, the first direction being the axial direction of the oil injection ring.

[0016] According to the oil-cooled motor of this utility model, by setting the oil injection ring structure of the oil-cooled motor of the first aspect above, by setting the oil injection ring and the first sealing ring, the first sealing ring and the oil injection ring are configured as a vulcanized integral part, the structure is simple, the first sealing ring and the oil injection ring can be stably and reliably connected together, and the sealing effect of the first sealing ring is greatly improved. At the same time, it effectively avoids the first sealing ring from falling off during assembly and the situation of improper manual assembly and installation, making the assembly of the oil injection ring structure more convenient and easier, and the assembly efficiency is higher.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of an oil-cooled motor according to an embodiment of the present utility model; Figure 2 yes Figure 1 A magnified schematic diagram of a portion at point A shown in the image; Figure 3 This is a schematic diagram showing a partial cross-section of the fuel injection ring structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the fuel injection ring structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the fuel injection ring according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the first sealing ring according to an embodiment of the present utility model.

[0019] Figure label: 10. Fuel injection ring structure; 11. Injection ring; 111. Oil chamber; 112. Oil inlet; 113. Injection hole; 114. Mounting boss; 115. First mounting groove; 116. Second mounting groove; 12. First sealing ring; 13. Second sealing ring; 20. Housing; 201. Receiving cavity; 202. Oil passage; 30. Stator assembly; 100. Oil-cooled motor. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] First, refer to Figure 1 A brief description will be given of the oil-cooled motor 100 according to a second aspect embodiment of the present invention.

[0022] According to an embodiment of the present invention, the oil-cooled motor 100 includes a housing 20, a stator assembly 30, and an oil injection ring structure 10. The housing 20 has a receiving cavity 201. The stator assembly 30 is disposed in the receiving cavity 201 and mounted on the housing 20. The stator assembly 30 includes a stator core. The oil injection ring structure 10 is disposed on both sides of the stator assembly 30 in a first direction, which is the axial direction of the oil injection ring 10. That is, there are two oil injection ring structures 10, which are respectively disposed on both sides of the stator assembly 30 in the first direction. The oil injection ring structure 10 can spray oil from both sides of the stator core to the stator assembly 30 and form a sealed oil channel 202 with the housing 20 to meet the sealing and oil spraying requirements.

[0023] The following is for reference. Figures 1-6 The oil injection ring structure 10 of the oil-cooled motor 100 according to the first aspect embodiment of the present invention is described.

[0024] like Figures 1-6 As shown, the oil injection ring structure 10 of the oil-cooled motor 100 according to the first aspect embodiment of the present invention includes: an oil injection ring 11 and a first sealing ring 12, wherein one side surface of the oil injection ring 11 in the axial direction is formed as a first sealing surface; the first sealing ring 12 is disposed on the first sealing surface, wherein the first sealing ring 12 and the oil injection ring 11 are configured to be vulcanized into a single piece.

[0025] In this embodiment, the oil injection ring structure 10 includes an oil injection ring 11 and a first sealing ring 12. A first sealing surface is formed on one side surface of the oil injection ring 11 along the axial direction. The first sealing ring 12 is disposed on the first sealing surface. For example, when the oil injection ring structure 10 is installed in the housing 20, the first sealing surface faces the end face of the stator core of the stator assembly 30. The first sealing ring 12 abuts against the end face of the stator core, thereby forming an oil passage 202 between the oil injection ring 11 and the end face of the stator core and the inner wall surface of the housing 20. The first sealing ring 12 plays a sealing role between the end face of the stator core and the first sealing surface, thereby meeting the sealing requirements of the oil injection ring structure 10.

[0026] The first sealing ring 12 and the oil injection ring 11 are configured to be vulcanized into one piece. For example, the first sealing ring 12 can be made of rubber strip. When the oil injection ring structure 10 is processed, the molded rubber strip is vulcanized onto the processed oil injection ring 11 under certain temperature, pressure and time, so that the first sealing ring 12 and the oil injection ring 11 are formed into one piece. When the oil-cooled motor 100 is assembled, the first sealing ring 12 and the oil injection ring 11 in the oil injection ring structure 10 can be assembled into the housing 20 as a whole.

[0027] In this embodiment, the first sealing ring 12 and the oil injection ring 11 are configured as a single vulcanized component, allowing the first sealing ring 12 and the oil injection ring 11 to form a strong chemical bond. This effectively prevents the first sealing ring 12 from falling off or shifting due to factors such as oil pressure and vibration. It also ensures that the first sealing ring 12 is stably and reliably connected to the oil injection ring 11 during vulcanization, effectively preventing it from falling off during installation into the housing 20. Furthermore, it eliminates the need for manual assembly of the first sealing ring 12 and the oil injection ring 11, ensuring a stable and reliable fit. This results in higher sealing reliability for the first sealing ring 12, making the oil injection ring structure 10 easier to assemble and providing a better sealing effect. Additionally, the vulcanization of the first sealing ring 12 and the oil injection ring 11 as a single component reduces wear on the first sealing ring 12 to some extent, extending the service life of the oil injection ring structure 10.

[0028] According to the oil-cooled motor 100 of the present invention, the oil injection ring structure 10 is provided with an oil injection ring 11 and a first sealing ring 12. The first sealing ring 12 and the oil injection ring 11 are configured as a vulcanized integral part, which is simple in structure. This allows the first sealing ring 12 and the oil injection ring 11 to be stably and reliably connected together and greatly improves the sealing effect of the first sealing ring 12. At the same time, it effectively avoids the first sealing ring 12 from falling off during assembly and improper manual assembly, making the oil injection ring structure 10 easier to assemble and more efficient in assembly.

[0029] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3 and Figure 5 As shown, the first sealing surface may be provided with a recessed first mounting groove 115. The first mounting groove 115 extends in a ring shape along the circumference of the oil injection ring 11, and a portion of the first sealing ring 12 is embedded in the first mounting groove 115.

[0030] In this embodiment, a recessed first mounting groove 115 is provided on the first sealing surface. The first mounting groove 115 extends in a ring shape along the circumference of the oil injection ring 11. A portion of the first sealing ring 12 is embedded in the first mounting groove 115. The structure is simple and easy to process. The first mounting groove 115 can play a positioning role for the first sealing ring 12, making it easier for the first sealing ring 12 and the oil injection ring 11 to undergo vulcanization. The setting of the first mounting groove 115 can increase the contact area between the first sealing ring 12 and the oil injection ring 11, thereby making the connection between the first sealing ring 12 and the oil injection ring 11 after vulcanization into a single piece more firm and reliable. Thus, after the oil injection ring structure 10 is assembled into the receiving cavity 201 of the housing 20, the first sealing ring 12 can achieve a more stable and reliable sealing effect.

[0031] In some embodiments of this utility model, reference is made to Figure 3As shown, the fuel injection ring 11 has a hollow oil cavity 111. The inner radial side of the fuel injection ring 11 is provided with a plurality of fuel injection holes 113, and the outer radial side of the fuel injection ring 11 is provided with a plurality of oil inlet holes 112. The plurality of fuel injection holes 113 and the plurality of oil inlet holes 112 are arranged at intervals along the circumference of the fuel injection ring 11. In the axial direction of the fuel injection ring 11, a portion of the outer peripheral surface of the fuel injection ring 11 protrudes outward along the radial direction of the fuel injection ring 11 to form a mounting boss 114. The end face of the mounting boss 114 is formed as a second sealing surface. The second sealing surface is suitable for sealing connection with the inner wall of the housing 20 of the oil-cooled motor 100. The other portion of the outer peripheral surface is provided with an oil inlet hole 112.

[0032] In this embodiment, the oil injection ring 11 is provided with an oil cavity 111 and a plurality of oil injection holes 113 communicating with the oil cavity 111. The plurality of oil injection holes 113 are arranged at intervals along the circumference of the oil injection ring 11. The structure is simple and meets the oil injection operation requirements of the oil injection ring 11. For example, during the processing, the diameter of each oil injection hole 113 and its angle in the circumferential direction of the oil injection ring 11 can be determined according to the simulation results of the flow distribution test, thereby controlling the flow rate and velocity of the oil injection ring 11 spraying onto the enameled wires at both ends of the stator assembly 30 and the flow rate and velocity of the oil entering the stator core oil channel 202 for cooling the stator core. The width dimension of the oil injection ring 11 in its axial direction can be set according to the flow simulation results and the length of the overall axial space of the oil-cooled motor 100.

[0033] In this embodiment, the oil injection ring 11 is provided with a plurality of oil inlet holes 112 arranged at intervals along the circumference of the oil injection ring 11 on the radial outer side. The structure is simple and meets the oil inlet requirements of the oil chamber 111 of the oil injection ring 11. For example, the number and arrangement position of the oil inlet holes 112 can correspond to the number and arrangement position of the oil injection holes 113. This can make it more convenient to process the oil inlet holes 112 and the oil injection holes 113 in the oil injection ring 11 to a certain extent.

[0034] In the axial direction of the injection ring 11, a portion of the outer peripheral surface of the injection ring 11 protrudes radially outward to form a mounting boss 114. The end face of the mounting boss 114 forms a second sealing surface, which is sealed to the inner wall of the housing 20 of the oil-cooled motor 100. Another portion of the outer peripheral surface is provided with an injection hole 113. Here, the outer peripheral surface refers to the circumferential outer surface of the injection ring 11. For example, the portion of the injection ring 11 with the mounting boss 114 in its axial direction can be a sealing part, and the portion with the oil inlet hole 112 can be an injection part. In the axial direction of the oil injection ring 11, the side surface of the mounting boss 114 facing the oil injection part cooperates with the outer peripheral surface of the oil injection part, the end face of the stator core, and the inner wall surface of the receiving cavity 201 to define the oil passage 202. The second sealing surface of the mounting boss 114 is sealed to the inner wall of the housing 20. The first sealing ring 12 is used to seal the first sealing surface and the stator core, so that the cooling oil in the oil passage 202 can flow steadily from the oil inlet 112 into the oil cavity 111 and be sprayed out from the oil injection hole 113 on the radial inner side of the oil injection ring 11 to the enameled wire for oil cooling.

[0035] In this embodiment, the oil injection ring 11 is provided with a mounting boss 114. The second sealing surface of the mounting boss 114 is sealed to the inner wall of the housing 20. The structure is simple, allowing the cooling oil to flow from the external oil supply equipment through the housing 20 into the formed oil channel 202, and then stably flow from the oil inlet 112 into the oil chamber 111 and then out from the oil injection hole 113. This can meet the requirements for guiding the cooling oil and sealing the oil channel 202.

[0036] In one embodiment of this utility model, such as Figure 2 As shown, the fuel injection ring structure 10 may also include a second sealing ring 13, and the fuel injection ring 11 is configured to abut against the inner wall of the housing 20 through the second sealing ring 13.

[0037] In this embodiment, the oil injection ring structure 10 is also provided with a second sealing ring 13. The second sealing ring 13 abuts and seals the second sealing surface against the inner wall of the housing 20. The structure is simple and can meet the sealing requirements of the oil passage 202.

[0038] In some examples of this utility model, references Figure 2 and Figure 5 As shown, the second sealing surface may be provided with a recessed second mounting groove 116. The second mounting groove 116 extends in a ring shape along the circumference of the oil injection ring 11, and a portion of the second sealing ring 13 is embedded in the second mounting groove 116.

[0039] In this embodiment, a recessed second mounting groove 116 is provided on the second sealing surface. The second mounting groove 116 extends in a ring shape along the circumference of the oil injection ring 11. The structure is simple and can play a role in positioning and limiting the second sealing ring 13, making it easier and more convenient to assemble the second sealing ring 13 and the oil injection ring 11.

[0040] In some examples of this utility model, the second sealing ring 13 can be an O-ring.

[0041] In one example of this utility model, the second sealing ring 13 can be interference-fitted with the inner wall of the housing 20, so that the second sealing ring 13 can stably and reliably abut against the inner wall of the housing 20, thereby forming a stable and reliable seal. For example, the groove depth and groove width of the second mounting groove 116, the inner diameter and diameter of the second sealing ring 13, and the outer diameter of the mounting boss 114 of the oil injection ring 11 can be reasonably set according to the thermal expansion of the housing 20. When the oil-cooled motor 100 is assembled, after the housing 20 is heated and expanded, the inner diameter of the housing 20 increases, and the oil injection ring structure 10 can be easily installed into the receiving cavity 201. After the oil injection ring structure 10 is assembled in place, the thermally fitted stator assembly 30 is in the receiving cavity 201. When the housing 20 cools down, the inner wall of the housing 20 shrinks to the set size and compresses the second sealing ring 13, thereby achieving a sealing effect.

[0042] In this embodiment, the second sealing ring 13 is set as an O-ring, which has a simple structure and can well meet the sealing requirements.

[0043] In some examples of this invention, the second sealing ring 13 may be configured to be vulcanized as an integral part with the oil injection ring 11.

[0044] In this embodiment, the second sealing ring 13 is configured to be vulcanized into one piece with the oil injection ring 11. The structure is simple, making the connection and fixation between the second sealing ring 13 and the oil injection ring 11 more reliable. It also eliminates the step of assembling the second sealing ring 13 with the oil injection ring 11 when the second sealing ring 13 is an independent component, making the production and processing of the oil injection ring structure 10 more convenient and efficient, and enabling the second sealing ring 13 to achieve a more stable and reliable sealing effect.

[0045] In some embodiments of this utility model, the oil injection ring 11 can be an aluminum alloy part.

[0046] In this embodiment, the oil injection ring 11 is made of aluminum alloy. For example, the oil injection ring 11 can be forged from aluminum alloy. Aluminum alloy has properties such as light weight and corrosion resistance, which allows the oil injection ring 11 to have higher structural strength and fatigue life. This allows the oil injection ring structure 10 to better adapt to different harsh working conditions and operate more stably. The aluminum alloy surface, after proper treatment, can form a high-strength vulcanization bond with the first sealing ring 12 and the second sealing ring 13, thereby well meeting the processing requirements of vulcanizing the first sealing ring 12 and the oil injection ring 11 into one piece, as well as the processing requirements of vulcanizing the second sealing ring 13 and the oil injection ring 11 into one piece.

[0047] In some embodiments of this utility model, the oil injection ring 11 may be provided with a positioning mark groove, which is adapted to cooperate with the positioning groove of the housing 20 of the oil-cooled motor 100 to position and assemble the oil injection ring structure 10.

[0048] In this embodiment, the fuel injection ring 11 is provided with a positioning mark groove that cooperates with the positioning groove of the housing 20 for positioning. The structure is simple, which makes it easy to position and install the fuel injection ring structure 10 into the receiving cavity 201 of the housing 20. This allows for convenient control of the relative positions of the multiple fuel injection holes 113 on the fuel injection ring 11 to achieve the best fuel injection effect.

[0049] The following is for reference. Figures 1-6 Description of an oil-cooled motor 100 according to a second aspect embodiment of the present invention.

[0050] like Figures 1-6 As shown, the oil-cooled motor 100 according to an embodiment of the present invention includes: a housing 20, a stator assembly 30, and an oil injection ring structure 10 according to a first aspect embodiment of the present invention. The housing 20 has a receiving cavity 201; the stator assembly 30 is disposed in the receiving cavity 201 and installed in the housing 20, and the stator assembly 30 includes a stator core; the oil injection ring structure 10 is disposed on both sides of the stator assembly 30 in a first direction, and the oil injection ring 11 abuts against the end face of the stator core through a first sealing ring 12, the first direction being the axial direction of the oil injection ring 11.

[0051] Other configurations and operations of the oil-cooled motor 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0052] According to the oil-cooled motor 100 of the present utility model embodiment, by setting the oil injection ring structure 10 of the first aspect embodiment, and by setting the oil injection ring 11 and the first sealing ring 12, the first sealing ring 12 and the oil injection ring 11 are configured as a vulcanized integral part, which is simple in structure, so that the first sealing ring 12 and the oil injection ring 11 can be stably and reliably connected together and the sealing effect of the first sealing ring 12 is greatly improved. At the same time, it effectively avoids the first sealing ring 12 from falling off during assembly and the situation of improper manual assembly and installation, making the oil injection ring structure 10 easier to assemble and more efficient in assembly.

[0053] The following will refer to Figures 1-6 This invention describes an oil-cooled motor 100 according to a specific embodiment of the present invention.

[0054] like Figures 1-6As shown, the oil-cooled motor 100 includes a housing 20, a stator assembly 30, and an oil injection ring structure 10. The housing 20 has a receiving cavity 201. The stator assembly 30 and the oil injection ring structure 10 are disposed in the receiving cavity 201. The stator assembly 30 is mounted on the housing 20 and includes a stator core. There are two oil injection ring structures 10, which are respectively arranged on both sides of the stator assembly 30 in a first direction, which is the axial direction of the oil-cooled motor 100. The oil injection ring structure 10 includes an oil injection ring 11, a first sealing ring 12, and a second sealing ring 13. The axial direction of the oil injection ring 11 is the same as the axial direction of the oil-cooled motor 100.

[0055] The oil injection ring 11 forms a first sealing surface on the axial side facing the stator assembly 30. The outer circumferential surface of the oil injection ring 11 protrudes towards the inner wall of the housing 20 at the circumferential end opposite to the stator assembly 30 to form a second sealing surface. The oil injection ring 11 cooperates with the end face of the stator core and the inner wall of the housing 20 to define the oil passage 202. The first sealing surface is provided with a first mounting groove 115, and the second sealing surface is provided with a second mounting groove 116. The first sealing ring 12 and the second sealing ring 13 are both fluororubber parts to meet the sealing requirements of the cooling oil. The first sealing ring 12 is embedded in the first mounting groove 115 and vulcanized with the oil injection ring 11 as a whole. The second sealing ring 13 is an O-ring and is embedded in the second mounting groove 116. The fuel injection ring 11 is an aluminum alloy part and has a hollow oil cavity 111. Multiple oil inlet holes 112 are formed on the radial outer side of the fuel injection ring 11, which are connected to the oil cavity 111. The oil inlet holes 112 are connected to the oil cavity 111. Multiple fuel injection holes 113 are formed on the radial inner side of the fuel injection ring 11, which are connected to the oil cavity 111. The multiple oil inlet holes 112 and the multiple fuel injection holes 113 are arranged at intervals along the circumference of the fuel injection ring 11.

[0056] This embodiment, by setting an oil injection ring 11 and a first sealing ring 12, with the first sealing ring 12 and the oil injection ring 11 configured as a single vulcanized component, has a simple structure. This allows the first sealing ring 12 and the oil injection ring 11 to be stably and reliably connected together, and greatly improves the sealing effect of the first sealing ring 12. This significantly improves the oil resistance, sealing performance, and wear resistance of the oil injection ring structure 10, ensuring that the cooling oil flows within the oil passage 202 without leakage or overflow, maintaining the pressure within the oil passage 202, and improving the vibration resistance of the oil injection ring structure 10. At the same time, it effectively avoids the first sealing ring 12 from falling off during assembly or being improperly installed manually, making the assembly of the oil injection ring structure 10 more convenient and easier, and greatly improving the assembly efficiency of the oil injection ring 11.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil injection ring structure for an oil-cooled motor, characterized in that, include: The oil injection ring (11) has one side surface in the axial direction formed as a first sealing surface; A first sealing ring (12) is disposed on the first sealing surface, wherein the first sealing ring (12) and the oil injection ring (11) are configured to be vulcanized into a single piece.

2. The oil injection ring structure of the oil-cooled motor according to claim 1, characterized in that, The first sealing surface is provided with a recessed first mounting groove (115), which extends in a ring shape along the circumference of the oil injection ring (11), and a portion of the first sealing ring (12) is embedded in the first mounting groove (115).

3. The oil injection ring structure of the oil-cooled motor according to claim 1, characterized in that, The oil injection ring (11) has a hollow oil cavity (111). The inner radial side of the oil injection ring (11) is provided with a plurality of oil injection holes (113), and the outer radial side of the oil injection ring (11) is provided with a plurality of oil inlet holes (112). The plurality of oil injection holes (113) and the plurality of oil inlet holes (112) are arranged at intervals along the circumference of the oil injection ring (11). In the axial direction of the oil injection ring (11), a portion of the outer peripheral surface of the oil injection ring (11) protrudes outward along the radial direction of the oil injection ring (11) to form a mounting boss (114). The end face of the mounting boss (114) is formed as a second sealing surface. The second sealing surface is adapted to be sealed and connected with the inner wall of the housing (20) of the oil-cooled motor. The other portion of the outer peripheral surface is provided with the oil inlet holes (112).

4. The oil injection ring structure of the oil-cooled motor according to claim 3, characterized in that, It also includes a second sealing ring (13), the oil injection ring (11) being configured to abut against the inner wall of the housing (20) via the second sealing ring (13).

5. The oil injection ring structure of the oil-cooled motor according to claim 4, characterized in that, The second sealing surface is provided with a recessed second mounting groove (116), which extends in a ring shape along the circumference of the oil injection ring (11), and a portion of the second sealing ring (13) is embedded in the second mounting groove (116).

6. The oil injection ring structure of the oil-cooled motor according to claim 4, characterized in that, The second sealing ring (13) is an O-ring.

7. The oil injection ring structure of the oil-cooled motor according to claim 4, characterized in that, The second sealing ring (13) is configured to be vulcanized as a single piece with the oil injection ring (11).

8. The oil injection ring structure of the oil-cooled motor according to any one of claims 1-7, characterized in that, The oil injection ring (11) is an aluminum alloy part.

9. The oil injection ring structure of the oil-cooled motor according to any one of claims 1-7, characterized in that, The oil injection ring (11) is provided with a positioning mark groove, which is adapted to cooperate with the positioning groove of the housing (20) of the oil-cooled motor to position and assemble the oil injection ring structure.

10. An oil-cooled motor, characterized in that, include: Housing (20), the housing (20) having a receiving cavity (201); A stator assembly (30) is disposed within the receiving cavity (201) and mounted on the housing (20), the stator assembly (30) comprising a stator core; According to any one of claims 1-9, the oil injection ring structure of the oil-cooled motor is provided on both sides of the stator assembly (30) in a first direction, and the oil injection ring (11) abuts against the end face of the stator core through the first sealing ring (12), wherein the first direction is the axial direction of the oil injection ring (11).

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