Cylinder penetrating connector and electric power assembly
By employing a multi-layer sealing structure and sealing rings in the cylinder connector, the problems of lubricant leakage and impurity penetration are solved, achieving high-quality signal and electrical connections, simplifying installation and disassembly, and reducing sealing costs.
Patent Information
- Application Number
- CN202520162206.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing cylinder connectors cannot effectively prevent lubricating oil from leaking into the terminals, and impurities in the oil cavity may penetrate into the terminal contact surface, causing signal transmission interruption.
Design a cylinder-through connector that uses a multi-layer sealing structure to independently separate the oil chamber and dry chamber, and seals the connection with the terminal through a sealing ring to ensure that the terminal contact surface is not soaked in oil or water vapor, thus achieving high quality of signal and electrical connection.
It achieves effective isolation between the oil chamber and the dry chamber, preventing lubricating oil leakage and impurity penetration, ensuring high quality of signal and electrical connections, simplifying the installation and disassembly process, and reducing sealing costs.
Smart Images
Figure CN223898694U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connectors, and more specifically, to a cylinder connector and an electric power assembly. Background Technology
[0002] Currently, some through-cylinder connectors use O-rings on the outside to prevent lubricating oil from leaking from the oil chamber to the dry chamber. However, this cannot prevent lubricating oil from the oil chamber from contacting the terminals. Other through-cylinder connectors can achieve sealing of both the male and female ends, but the terminals in the oil chamber are immersed in oil. During signal transmission, impurities in the oil chamber can penetrate between the terminal contact surfaces, potentially causing signal interruption. Utility Model Content
[0003] The purpose of this invention is to provide a cylinder connector and an electric power assembly that can effectively seal the terminals and achieve high-quality signal and electrical connections.
[0004] The embodiments of this utility model are implemented as follows:
[0005] In a first aspect, this application provides a cylinder-through connector for mounting on an electric powertrain. The electric powertrain includes a first terminal structure, a second terminal structure, and a housing having an oil chamber and a dry chamber. The connector includes a body, a first connecting arm, and a second connecting arm. The body penetrates the sidewall of the housing that connects the oil chamber and the dry chamber, and the outer sidewall of the body is sealed to the sidewall via a first sealing structure. The first connecting arm is connected to the side of the body relative to the oil chamber, and the second connecting arm is connected to the side of the body relative to the dry chamber. A first terminal chamber and a second terminal chamber are respectively provided inside the first connecting arm and the second connecting arm. One end of the first terminal of the first terminal structure and one end of the second terminal of the second terminal structure extend into the first terminal chamber and the second terminal chamber, respectively. The outer sidewalls of the first terminal and the second terminal are sealed to the first terminal chamber and the second terminal chamber, respectively, via a second sealing structure.
[0006] In some possible implementations, the second sealing structure includes a first sealing ring, which is fitted onto the outer peripheral sidewall of the first terminal; the shape of the inner peripheral sidewall of the first sealing ring matches the shape of the outer peripheral sidewall of the first terminal, and the shape of the outer peripheral sidewall of the first sealing ring matches the shape of the inner peripheral sidewall of the first terminal cavity; when the first terminal is sealed and inserted into the first terminal cavity, the inner peripheral sidewall of the first sealing ring is in contact with the outer peripheral sidewall of the first terminal, and the outer peripheral sidewall of the first sealing ring is in contact with the inner peripheral sidewall of the first terminal cavity.
[0007] In some possible implementations, the second sealing structure includes a second sealing ring for fitting onto the outer peripheral sidewall of the second terminal; the shape of the inner peripheral sidewall of the second sealing ring matches the shape of the outer peripheral sidewall of the second terminal, and the shape of the outer peripheral sidewall of the second sealing ring matches the shape of the inner peripheral sidewall of the second terminal cavity; when the second terminal is sealed and inserted into the second terminal cavity, the inner peripheral sidewall of the second sealing ring is in contact with the outer peripheral sidewall of the second terminal, and the outer peripheral sidewall of the second sealing ring is in contact with the inner peripheral sidewall of the second terminal cavity.
[0008] In some possible implementations, the first sealing structure is a third sealing ring. The housing is provided with a mounting hole for mounting the body. The third sealing ring is used to fit onto the outer peripheral sidewall of the body. The shape of the inner peripheral sidewall of the third sealing ring matches the shape of the outer peripheral sidewall of the body, and the shape of the outer peripheral sidewall of the third sealing ring matches the shape of the inner peripheral sidewall of the mounting hole. When the body is sealed and mounted on the housing, the inner peripheral sidewall of the third sealing ring fits against the outer peripheral sidewall of the body, and the outer peripheral sidewall of the third sealing ring fits against the inner peripheral sidewall of the mounting hole.
[0009] In some possible implementations, the connector further includes a first male plug-in terminal located within the first terminal cavity, and the end of the first terminal extending into the first terminal cavity has a first female plug-in terminal for plugging into the first male plug-in terminal.
[0010] In some possible implementations, the first male connector has first pins, the number, shape, and arrangement of which match the number, shape, and arrangement of first sockets on the first female connector.
[0011] In some possible implementations, the connector further includes a second male plug-in terminal located within the second terminal cavity, and the end of the second terminal extending into the second terminal cavity has a second female plug-in terminal for plugging into the second male plug-in terminal.
[0012] In some possible implementations, the second male connector has a second pin, the number, shape, and arrangement of which match the number, shape, and arrangement of the second pins on the second female connector.
[0013] In some possible implementations, the first connecting arm is provided with a first buckle structure, and the first terminal is provided with a second buckle structure for fastening with the first buckle structure; the second connecting arm is provided with a third buckle structure, and the second terminal is provided with a fourth buckle structure for fastening with the third buckle structure.
[0014] Secondly, this application also provides an electric powertrain, including a first terminal structure, a second terminal structure, a housing, and a connector as described in any of the above embodiments. The connector is sealed and mounted on the housing, and the first terminal of the first terminal structure and the second terminal of the second terminal structure are respectively sealed and inserted into the first connecting arm and the second connecting arm of the connector.
[0015] The beneficial effects of this utility model embodiment are as follows: After the main body penetrates the shell, it is also assembled with the shell through a first sealing structure, thereby independently separating the oil cavity and dry cavity of the shell. The first terminal and the second terminal are respectively sealed with the first connecting arm and the second connecting arm through the second sealing structure, thereby independently separating the oil cavity and the first terminal chamber. The second terminal is sealed with the second connecting arm, thereby independently separating the dry cavity and the second terminal chamber. This achieves independent sealing of the oil cavity, the dry cavity, the first terminal chamber and the second terminal chamber, which not only achieves the oil leakage prevention function between the dry cavity and the oil cavity, but also ensures that the terminal contact surfaces of the first terminal and the second terminal inside the first terminal chamber and the second terminal chamber will not be soaked in oil / water vapor, thereby ensuring high-quality connection of signal and electrical connections. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of the cylinder connector according to an embodiment of the present invention;
[0018] Figure 2 This is a side view of the cylinder connector according to an embodiment of the present invention;
[0019] Figure 3 This is a cross-sectional view of the cylinder connector according to an embodiment of the present utility model;
[0020] Figure 4 This is an assembly diagram of the cylinder connector and housing according to an embodiment of the present utility model.
[0021] Icons: 1. First terminal structure; 11. First terminal; 12. First terminal protection structure; 2. Second terminal structure; 21. Second terminal; 22. Second terminal protection structure; 3. Housing; 4. Connector; 41. Body; 42. First connecting arm; 4201. First terminal chamber; 43. Second connecting arm; 4301. Second terminal chamber; 44. First sealing ring; 45. Second sealing ring; 46. First inverted structure; 47. Third inverted structure; 48. First male plug; 4801. First pin; 49. Second male plug; 4901. Second pin; 410. Third sealing ring; 411. Second inverted structure; 412. Fourth inverted structure. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] This application provides a cylinder-through connector for mounting on an electric powertrain. The electric powertrain includes a first terminal structure 1, a second terminal structure 2, and a housing 3 forming an oil chamber and a dry chamber. The connector 4 includes a body 41, a first connecting arm 42, and a second connecting arm 43. The body 41 penetrates the sidewalls of the oil and dry chambers of the housing 3, and the outer sidewall of the body 41 is sealed to the sidewalls via a first sealing structure. The first connecting arm 42 is connected to the side of the body 41 relative to the oil chamber, and the second connecting arm 43 is connected to the side of the body 41 relative to the dry chamber. A first terminal chamber 4210 and a second terminal chamber 4301 are respectively provided inside the first connecting arm 42 and the second connecting arm 43. One end of the first terminal 11 and one end of the second terminal 21 extend into the first terminal chamber 4201 and the second terminal chamber 4301, respectively, and the outer sidewalls of the first terminal 11 and the second terminal 21 are sealed to the first terminal chamber 4201 and the second terminal chamber 4301, respectively, via the second sealing structure. (Reference) Figures 1 to 4The oil chamber (motor side) of housing 3 is filled with lubricating oil to lubricate the motor shaft. The dry chamber (electric control side) of housing 3 is used to prevent the main electrical components from being corroded by oil. After the body 41 penetrates the side wall of housing 3, it is also assembled with housing 3 through a first sealing structure, thereby independently separating the oil chamber and dry chamber of housing 3. The first terminal 11 and the second terminal 21 are respectively sealed with the first connecting arm 42 and the second connecting arm 43 through the second sealing structure, thereby independently separating the oil chamber and the first terminal chamber 4201, as well as the dry chamber and the second terminal chamber 4301. This achieves independent sealing of the oil chamber, the dry chamber, the first terminal chamber 4201 and the second terminal chamber 4301, which not only achieves the function of preventing oil leakage between the dry chamber and the oil chamber, but also ensures that the contact surfaces of the first terminal 11 and the second terminal 21 inside the first terminal chamber 4201 and the second terminal chamber 4301 are not soaked with oil / water vapor, thereby ensuring high-quality connection of signal and electrical connections.
[0029] In some embodiments, the second sealing structure includes a first sealing ring 44, which is fitted onto the outer peripheral sidewall of the first terminal 11. The shape of the inner peripheral sidewall of the first sealing ring 44 matches the shape of the outer peripheral sidewall of the first terminal 11, and the shape of the outer peripheral sidewall of the first sealing ring 44 matches the shape of the inner peripheral sidewall of the first terminal chamber 4201. When the first terminal 11 is sealed and inserted into the first terminal chamber 4201, the inner peripheral sidewall of the first sealing ring 44 fits against the outer peripheral sidewall of the first terminal 11, and the outer peripheral sidewall of the first sealing ring 44 fits against the inner peripheral sidewall of the first terminal chamber 4201. The first sealing ring 44 achieves independent separation between the first terminal chamber 4201 and the oil chamber, the sealing method is simple and easy to install and disassemble, and the sealing cost is low.
[0030] In some embodiments, the shape and size of the first sealing ring 44 are selected according to the shape and size of the outer peripheral side of the first terminal 11 and the inner peripheral side of the first terminal chamber 4201, for example, an O-ring or a rectangular sealing ring, which can achieve effective sealing of the first terminal 11 and the first terminal chamber 4201.
[0031] In some embodiments, the number of first sealing rings 44 is one or more. When the sealing requirement is not high, the number of first sealing rings 44 can be set to one, which can simplify the installation and disassembly process. When the sealing requirement is high, the number of first sealing rings 44 can be set to multiple, which can further improve the sealing effect.
[0032] In some embodiments, the second sealing structure includes a second sealing ring 45, which is fitted onto the outer peripheral sidewall of the second terminal 21. The shape of the inner peripheral sidewall of the second sealing ring 45 matches the shape of the outer peripheral sidewall of the second terminal 21, and the shape of the outer peripheral sidewall of the second sealing ring 45 matches the shape of the inner peripheral sidewall of the second terminal chamber 4301. When the second terminal 21 is sealed and inserted into the second terminal chamber 4301, the inner peripheral sidewall of the second sealing ring 45 fits against the outer peripheral sidewall of the second terminal 21, and the outer peripheral sidewall of the second sealing ring 45 fits against the inner peripheral sidewall of the second terminal chamber 4301. The second sealing ring 45 achieves independent separation between the second terminal chamber 4301 and the dry chamber, the sealing method is simple and easy to install and disassemble, and the sealing cost is low.
[0033] In some embodiments, similar to the first sealing ring 44, the shape and size of the second sealing ring 45 can be selected according to the shape and size of the outer peripheral side of the second terminal 21 and the inner peripheral side of the second terminal chamber 4301, for example, an O-ring or a rectangular sealing ring, so as to achieve effective sealing of the second terminal 21 and the second terminal chamber 4301.
[0034] In some embodiments, the number of second sealing rings 45 is one or more. When the sealing requirements are not high, the number of second sealing rings 45 can be set to one, which can simplify the installation and disassembly process. When the sealing requirements are high, the number of second sealing rings 45 can be set to multiple, which can further improve the sealing effect.
[0035] In some embodiments, the first sealing structure is a third sealing ring 410. The housing 3 has a mounting hole for mounting the body 41. The third sealing ring 410 is fitted onto the outer peripheral sidewall of the body 41. The shape of the inner peripheral sidewall of the third sealing ring 410 matches the shape of the outer peripheral sidewall of the body 41, and the shape of the outer peripheral sidewall of the third sealing ring 410 matches the shape of the inner peripheral sidewall of the mounting hole. When the body 41 is sealed and mounted on the housing 3, the inner peripheral sidewall of the third sealing ring 410 fits against the outer peripheral sidewall of the body 41, and the outer peripheral sidewall of the third sealing ring 410 fits against the inner peripheral sidewall of the mounting hole. The third sealing ring 410 achieves independent separation of the oil chamber and the dry chamber, providing a simple sealing method that is easy to install and disassemble, while also reducing sealing costs.
[0036] In some embodiments, similar to the first sealing ring 44, the shape and size of the third sealing ring 410 can be selected according to the shape and size of the outer peripheral side surface of the body 41 and the inner peripheral side surface of the mounting hole, for example, an O-ring or a rectangular sealing ring, thereby enabling effective sealing of the oil cavity and the dry cavity.
[0037] In some embodiments, the number of third sealing rings 410 is one or more. When the sealing requirement is not high, the number of third sealing rings 410 can be set to one, which can simplify the installation and disassembly process. When the sealing requirement is high, the number of third sealing rings 410 can be set to multiple, which can further improve the sealing effect.
[0038] In some embodiments, the connector 4 in this embodiment further includes a first male plug-in terminal 48, which is located inside the first terminal chamber 4201. The end of the first terminal 11 that extends into the first terminal chamber 4301 has a first female plug-in terminal for plugging and connecting with the first male plug-in terminal 48. The first male plug-in terminal 48 and the first female plug-in terminal are connected by plugging, which enables quick installation and disassembly of the first terminal 11 and the first connecting arm 42.
[0039] In some embodiments, the first male connector 48 has first pins 4801, the number, shape, and arrangement of which match the number, shape, and arrangement of the first sockets on the first female connector. For example, the first pins 4801 can be designed as 4-pin, 6-pin, 8-pin, or 12-pin as required, and the shape of the first pins 4801 can be rectangular, round, or irregular. The first sockets are connected by plugging in the matched first pins 4801, which can improve connection accuracy and assembly / disassembly efficiency.
[0040] In some embodiments, the connector 4 in this embodiment further includes a second male insertion terminal 49, which is located inside the second terminal chamber 4301. The end of the second terminal 21 extending into the second terminal chamber 4301 has a second female insertion terminal for insertion and connection with the second male insertion terminal 49. The second male insertion terminal 49 and the second female insertion terminal are connected by insertion, which enables quick installation and removal of the second terminal 21 and the second connecting arm 43.
[0041] In some embodiments, the second male connector 49 has second pins 4901, the number, shape, and arrangement of which match the number, shape, and arrangement of the second sockets on the second female connector. For example, the second pins 4901 can be designed as 4-pin, 6-pin, 8-pin, or 12-pin as required, and their shape can be rectangular, round, or irregular. The second sockets are connected via the matched second pins 4901, which improves connection accuracy and assembly / disassembly efficiency.
[0042] In some embodiments, a first undercut structure 46 is provided on the first connecting arm 42, and a second undercut structure 411 is provided on the first terminal 11 for fastening with the first undercut structure 46; a third undercut structure 47 is provided on the second connecting arm 43, and a fourth undercut structure 412 is provided on the second terminal 21 for fastening with the third undercut structure 47. The first undercut structure 46 is provided with a first undercut groove, and the second undercut structure 410 can be fastened inside the first undercut groove. Similarly, the third undercut structure 47 is provided with a second undercut groove, and the fourth undercut structure 412 can be fastened inside the second undercut groove, thereby preventing loosening.
[0043] In some embodiments, the sidewall of the body 41 of the connector 4 can be hollowed out in different shapes according to the needs of the injection molding process, thereby forming an shape that adapts to different housings 3.
[0044] In some embodiments, the first terminal structure 1 further includes a first terminal protection structure 12. The first terminal protection structure 12 is a hollow cylindrical structure, and the first terminal 11 is located at the center inside the first terminal protection structure 12, which can protect the first terminal 11. When the first terminal 11 is sealed and inserted into the first terminal cavity 4201, the first terminal protection structure 12 can be clamped on the outer side wall of the first connecting arm 41, thereby strengthening the connection stability between the first terminal 11 and the first connecting arm 42.
[0045] In some embodiments, the second terminal structure 2 further includes a second terminal protection structure 22. The second terminal protection structure 22 is a hollow cylindrical structure, and the second terminal 21 is located at the center inside the second terminal protection structure 22, which can protect the second terminal 21. When the second terminal 21 is sealed and inserted into the second terminal cavity 4301, the second terminal protection structure 22 can be clamped on the outer wall of the second connecting arm 43, thereby strengthening the connection stability between the second terminal 21 and the second connecting arm 43.
[0046] This application also provides an electric powertrain, including a first terminal structure 1, a second terminal structure 2, a housing 3, and a connector 4 as described in any of the above embodiments. The connector 4 is sealed and mounted on the housing 3. The first terminal 11 of the first terminal structure 1 and the second terminal 21 of the second terminal structure 2 are respectively sealed and inserted into the first connecting arm 42 and the second connecting arm 43 of the connector 4. After penetrating the side wall of the housing 3, the main body 41 is also assembled with the housing 3 through a first sealing structure, thereby independently separating the oil chamber and the dry chamber of the housing 3. The first terminal 11 and the second terminal 21 are respectively sealed and assembled with the first connecting arm 42 and the second connecting arm 43 through the second sealing structure, thereby independently separating the oil chamber and the first terminal chamber 4201, as well as independently separating the dry chamber and the second terminal chamber 4301. This achieves independent sealing of the oil chamber, the dry chamber, the first terminal chamber 4201 and the second terminal chamber 4301, which not only achieves the function of preventing oil leakage between the dry chamber and the oil chamber, but also ensures that the terminal contact surfaces of the first terminal 11 and the second terminal 21 inside the first terminal chamber 4201 and the second terminal chamber 4301 will not be soaked with oil / water vapor, thereby ensuring high-quality connection of signal and electrical connections.
[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A cylinder-penetrating connector, characterized in that, For installation on an electric powertrain, the electric powertrain includes a first terminal structure, a second terminal structure, and a housing having an oil cavity and a dry cavity. The connector includes a body, a first connecting arm, and a second connecting arm. The body penetrates the side wall of the housing connecting the oil cavity and the dry cavity, and the outer side wall of the body is sealed to the side wall through a first sealing structure. The first connecting arm is connected to the side of the body relative to the oil cavity, and the second connecting arm is connected to the side of the body relative to the dry cavity. The interior of the first connecting arm and the interior of the second connecting arm are respectively provided with a first terminal chamber and a second terminal chamber. One end of the first terminal of the first terminal structure and one end of the second terminal of the second terminal structure extend into the first terminal chamber and the second terminal chamber, respectively. The outer side wall of the first terminal and the outer side wall of the second terminal are sealed to the first terminal chamber and the second terminal chamber, respectively, through a second sealing structure.
2. The cylinder connector according to claim 1, characterized in that, The second sealing structure includes a first sealing ring, which is used to be sleeved on the outer peripheral sidewall of the first terminal; the shape of the inner peripheral sidewall of the first sealing ring matches the shape of the outer peripheral sidewall of the first terminal, and the shape of the outer peripheral sidewall of the first sealing ring matches the shape of the inner peripheral sidewall of the first terminal cavity; when the first terminal is sealed and inserted into the first terminal cavity, the inner peripheral sidewall of the first sealing ring is in contact with the outer peripheral sidewall of the first terminal, and the outer peripheral sidewall of the first sealing ring is in contact with the inner peripheral sidewall of the first terminal cavity.
3. The cylinder connector according to claim 1, characterized in that, The second sealing structure includes a second sealing ring, which is fitted onto the outer peripheral sidewall of the second terminal; the shape of the inner peripheral sidewall of the second sealing ring matches the shape of the outer peripheral sidewall of the second terminal, and the shape of the outer peripheral sidewall of the second sealing ring matches the shape of the inner peripheral sidewall of the second terminal cavity; when the second terminal is sealed and inserted into the second terminal cavity, the inner peripheral sidewall of the second sealing ring is in contact with the outer peripheral sidewall of the second terminal, and the outer peripheral sidewall of the second sealing ring is in contact with the inner peripheral sidewall of the second terminal cavity.
4. The cylinder connector according to claim 1, characterized in that, The first sealing structure is a third sealing ring. The housing is provided with a mounting hole for mounting the main body. The third sealing ring is used to fit on the outer peripheral sidewall of the main body. The shape of the inner peripheral sidewall of the third sealing ring matches the shape of the outer peripheral sidewall of the main body, and the shape of the outer peripheral sidewall of the third sealing ring matches the shape of the inner peripheral sidewall of the mounting hole. When the main body is sealed and mounted on the housing, the inner peripheral sidewall of the third sealing ring fits against the outer peripheral sidewall of the main body, and the outer peripheral sidewall of the third sealing ring fits against the inner peripheral sidewall of the mounting hole.
5. The cylinder connector according to claim 1, characterized in that, The connector further includes a first male plug-in terminal located within the first terminal cavity, and the end of the first terminal extending into the first terminal cavity has a first female plug-in terminal for plugging and connecting with the first male plug-in terminal.
6. The cylinder connector according to claim 5, characterized in that, The first male connector has a first pin, and the number, shape and arrangement of the first pin are respectively matched with the number, shape and arrangement of the first sockets on the first female connector.
7. The cylinder connector according to claim 1, characterized in that, The connector further includes a second male plug-in terminal located within the second terminal cavity, and the end of the second terminal extending into the second terminal cavity has a second female plug-in terminal for plugging and connecting with the second male plug-in terminal.
8. The cylinder connector according to claim 7, characterized in that, The second male connector has a second pin, the number, shape and arrangement of which match the number, shape and arrangement of the second pins on the second female connector.
9. The cylinder connector according to claim 1, characterized in that, The first connecting arm is provided with a first inverted buckle structure, and the first terminal is provided with a second inverted buckle structure for fastening with the first inverted buckle structure; the second connecting arm is provided with a third inverted buckle structure, and the second terminal is provided with a fourth inverted buckle structure for fastening with the third inverted buckle structure.
10. An electric powertrain, characterized in that, The device includes a first terminal, a second terminal, a housing, and a connector as described in any one of claims 1 to 9, wherein the connector is hermetically mounted on the housing, and the first terminal and the second terminal are hermetically inserted into the first connecting arm and the second connecting arm of the connector, respectively.