Motor wire outlet sealing structure

Abstract

This utility model relates to the field of motor technology, and in particular to a motor cable outlet sealing structure, including a cable outlet position disposed on a motor base, a terminal block fixed to the outside of the cable outlet position, and multiple terminals extending through the terminal block. The terminal block is detachably connected to the motor base, a first sealing ring is provided between the terminal block and the motor base, and a second sealing ring is provided between the terminal block and the terminals. This utility model can improve the sealing performance and flexibility of the motor cable outlet.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor lead wire sealing structure. Background Technology

[0002] Electric motors have advantages such as compact structure, small size, and high torque density, and are widely used in electric vehicles, flywheel energy storage, wind power generation, and other fields. During the operation of an electric motor, the internal stator windings generate a large amount of heat, and a good cooling system plays an important role in ensuring the stable performance of the motor.

[0003] To ensure stable motor operation, cooling medium is typically circulated inside the motor for cooling, thus requiring a sealed cavity within the motor housing. The sealing of the motor's lead-out terminals is crucial, affecting not only the safety of internal electrical components but also the overall performance and lifespan of the motor. Current technology often involves applying sealant to the lead-out holes, but this sealant is prone to peeling off over time, leading to cooling medium leakage. Another sealing method is to directly weld the junction box to the housing; while this ensures a tight seal, it compromises the motor's maintainability. Utility Model Content

[0004] To improve the sealing and flexibility of the motor outlet section, this application provides a motor outlet sealing structure.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A motor cable outlet sealing structure includes a cable outlet position disposed on a motor base, a terminal block fixed to the outside of the cable outlet position, and a plurality of terminals extending through the terminal block. The terminal block is detachably connected to the motor base. A first sealing ring is disposed between the terminal block and the motor base, and a second sealing ring is disposed between the terminal block and the terminals.

[0007] By employing the aforementioned device, the first sealing ring ensures the sealing of the connection between the terminal block and the base, reducing the possibility of cooling medium leakage from the gap between the terminal block and the housing. The second sealing ring further strengthens the seal between the terminal and the terminal block, preventing potential leakage points caused by the terminal protruding from the terminal block, thereby significantly improving the overall sealing performance of the motor and extending its service life. Furthermore, the terminal block and base are detachably connected, allowing for easy removal of the terminal block when maintenance, repair, or replacement of the terminal or connector is required.

[0008] Preferably, the bottom of the terminal block is provided with a positioning boss, which cooperates with the cable outlet, and the outer periphery of the cable outlet is provided with a first sealing groove, and the first sealing ring is disposed in the first sealing groove to form a seal between the terminal block and the base.

[0009] By employing the aforementioned device, the positioning boss at the bottom of the terminal block mates with the cable outlet on the housing, ensuring accurate positioning of the terminal block during installation and preventing sealing issues caused by installation deviations. Furthermore, the first sealing ring fills the gap between the terminal block and the base, improving the motor's sealing performance.

[0010] Preferably, the terminal block has multiple wire-passing holes in the middle, and the number of wire-passing holes is consistent with the number of terminals.

[0011] By using the above-mentioned device, multiple wire-passing holes are opened in the middle of the terminal block, and the number of wire-passing holes is consistent with the number of terminals, so that each terminal can accurately pass through the corresponding wire-passing hole, thereby ensuring a good fit between the terminal block and the terminal. This not only improves the convenience and accuracy of installation, but also effectively avoids poor sealing problems caused by misalignment or missing terminals.

[0012] Preferably, the terminal block is provided with multiple limiting grooves, and each limiting groove corresponds to a wire hole.

[0013] By adopting the above-mentioned device, the one-to-one correspondence between the limiting groove and the wire hole can effectively reduce the misalignment or offset of the connector during the installation process, ensuring that each connector can accurately pass through the corresponding wire hole, thereby improving assembly accuracy and reliability.

[0014] Preferably, the connector includes a cylindrical body, a limiting plate, a threaded connection part, and a terminal. The cylindrical body is used to seal and connect the lead wire. The limiting plate is adapted to the limiting groove and abuts against the limiting groove. The threaded connection part and the terminal both pass through the wire hole.

[0015] By using the above-mentioned device, the lead wire is inserted into the cylinder during installation to achieve an effective sealed connection of the lead wire. The cooperation between the limiting plate and the limiting groove makes the connector more stable and reliable during installation, avoiding positional displacement caused by vibration and other reasons, thereby reducing the possibility of cooling medium seeping out from the gap between the connector and the wire hole.

[0016] Preferably, the limiting plate has a second sealing groove on the side near the threaded connection portion, and the second sealing ring is disposed in the second sealing groove to form a seal between the terminal block and the connector.

[0017] By using the above-mentioned device, the second sealing ring is filled in the second sealing groove, ensuring tight contact between the terminal block and the terminal, reducing the gap between the terminal block and the terminal, and improving the sealing performance of the motor outlet.

[0018] Preferably, a fastener is connected to the threaded connection portion to lock the connector end onto the terminal block.

[0019] By using the above-mentioned device, the fastener can ensure that the connector is firmly fixed to the terminal block, avoiding loosening due to vibration or impact.

[0020] Preferably, the terminal block is provided with bolt holes, and a fixing bolt is provided in the bolt holes to lock the terminal block onto the base.

[0021] By employing the aforementioned device, the locking action of the fixing bolts effectively resists vibrations and external forces generated during motor operation, preventing the terminal block from loosening or shifting. This ensures long-term stable operation of the motor's output terminals and avoids electrical faults or seal failures caused by unstable connections. Furthermore, when maintenance, repair, or replacement of the terminal block or motor is required, the terminal block can be easily disassembled simply by loosening the fixing bolts.

[0022] This application has the following beneficial effects:

[0023] 1. In this application, the first sealing ring ensures the sealing performance at the connection between the terminal block and the base, reducing the possibility of cooling medium leakage from the gap between the terminal block and the housing; the second sealing ring further strengthens the seal between the terminal and the terminal block, avoiding potential leakage points caused by the terminal protruding from the terminal block, thereby significantly improving the overall sealing performance of the motor and extending its service life. In addition, the terminal block and the base are detachably connected, allowing for easy removal of the terminal block when maintenance, repair, or replacement of the terminal or the terminal is required.

[0024] 2. In this application, the lead wire is inserted into the cylinder during installation to achieve an effective sealed connection of the lead wire. The cooperation between the limiting plate and the limiting groove makes the connector more stable and reliable during installation, avoiding positional displacement caused by vibration and other reasons, thereby reducing the possibility of cooling medium seeping out from the gap between the connector and the wire hole. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the motor outlet sealing structure according to an embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the motor lead-out sealing structure according to an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the bottom structure of the wiring board of the motor output sealing structure according to an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Base; 11. Cable outlet; 12. First sealing groove; 2. Terminal block; 21. Positioning boss; 22. Cable through hole; 23. Limiting groove; 24. Bolt hole; 25. Fixing bolt; 3. Connecting end; 31. Cylinder; 32. Limiting plate; 321. Second sealing groove; 33. Threaded connection part; 34. Terminal; 35. Fastener; 4. First sealing ring; 5. Second sealing ring. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] A motor lead wire sealing structure, such as Figure 1-3 As shown, the device includes a cable outlet 11 located on the base 1, a terminal block 2 installed on the outside of the cable outlet 11, and three connectors 3 extending outwards from the outside of the terminal block 2. Each of the four corners of the terminal block 2 has a bolt hole 24, and a fixing bolt 25 is connected to each bolt hole 24. The terminal block 2 is detachably connected to the base 1 by the fixing bolts 25. When maintenance, repair, or replacement of the terminal block 2 or the motor is required, the terminal block 2 can be easily removed by loosening the fixing bolts 25, improving the flexibility and convenience of the device. Furthermore, a first sealing ring 4 is provided between the terminal block 2 and the base 1, and a second sealing ring 5 is provided between the terminal block 2 and the connectors 3. The cooperation of the first sealing ring 4 and the second sealing ring 5 ensures the sealing performance of the motor cable outlet.

[0032] like Figure 1-3 As shown, the terminal block 2 has multiple wire-passing holes 22 and multiple limiting grooves 23 in its center. The positions of the wire-passing holes 22 and the limiting grooves 23 correspond one-to-one. In this embodiment, there are three wire-passing holes 22 and three limiting grooves 23, the same number as the connectors 3, ensuring that each connector 3 can accurately pass through its corresponding wire-passing hole 22, reducing friction between the lead wire and other components, thereby extending the service life of the lead wire. Furthermore, the diameter of the wire-passing holes 22 is adapted to the size of the connectors 3. In addition, the limiting grooves 23 position the connectors 3, reducing the possibility of displacement under vibration or impact, and enhancing the stability of the entire structure.

[0033] like Figure 1-3As shown, the bottom of the terminal block 2 is provided with a positioning boss 21, and the shape and size of the positioning boss 21 are adapted to the outlet position 11. When installing the terminal block 2, simply align the positioning boss 21 with the outlet position 11, and then place the terminal block 2 in place to achieve the initial positioning of the terminal block 2, thus avoiding the problem of poor sealing caused by installation deviation.

[0034] In addition, such as Figure 1-2 As shown, a first sealing groove 12 is provided on the base 1 around the outer periphery of the outlet 11. A first sealing ring 4 is located within the first sealing groove 12. When the fixing bolt 25 is tightened, the terminal block 2 can press against the first sealing ring 4, thereby achieving a tight connection between the terminal block 2 and the base 1, improving the sealing performance between the terminal block 2 and the base 1, and reducing the possibility of leakage of the cooling medium inside the motor from the gap between the terminal block 2 and the base 1. In this embodiment, the first sealing ring 4 is made of elastic materials such as rubber rings or silicone pads to maintain a good sealing effect.

[0035] like Figure 1-3 As shown, the connector 3 includes a cylindrical body 31, a limiting plate 32, a threaded connection part 33, and a terminal 34. The cylindrical body 31 is used to seal the lead wire inside the motor. The limiting plate 32 abuts against the limiting groove 23, and the limiting plate 32 and the limiting groove 23 are adapted to achieve optimal positioning, ensuring that the connector 3 can be accurately positioned when inserted into the wire hole 22, avoiding poor sealing due to positional deviation. Furthermore, both the threaded connection part 33 and the terminal 34 protrude from the wire hole 22, and a fastener 35 is connected to the threaded connection part 33. The fastener 35 locks the connector 3 onto the terminal block 2, preventing the connector 3 from loosening due to vibration or impact. In this embodiment, the fastener 35 is a nut.

[0036] like Figure 1-2 As shown, the limiting plate 32 has an annular second sealing groove 321 on the side near the threaded connection 33. The second sealing ring 5 is located in the second sealing groove 321. When the nut is tightened, the limiting plate 32 and the terminal plate 2 together abut against the second sealing ring 5, forming a seal between the terminal plate 2 and the terminal 3, reducing the possibility of leakage of the cooling medium inside the motor from the gap between the terminal 3 and the terminal plate 2. In this embodiment, the second sealing ring 5 is made of elastic materials such as rubber rings or silicone pads to ensure that the terminal 34 can maintain a good sealing effect after multiple insertions and removals.

[0037] Working principle: This application establishes a double seal between the terminal block 2 and the base 1, and between the terminal block 2 and the connector 3, by setting a first sealing ring 4 between the terminal block 2 and the base 1, and a second sealing ring 5 between the terminal block 2 and the connector 3. This reduces the possibility of cooling medium leakage and further enhances the sealing performance of the motor's output terminals. Furthermore, the bolted connection between the terminal block 2 and the base 1 greatly improves the maintainability and ease of maintenance of the motor.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A motor lead wire sealing structure, characterized in that, It includes a cable outlet (11) set on the base (1), a terminal block (2) fixed outside the cable outlet (11), and multiple terminals (3) extending out of the terminal block (2). The terminal block (2) is detachably connected to the base (1). A first sealing ring (4) is provided between the terminal block (2) and the base (1), and a second sealing ring (5) is provided between the terminal block (2) and the terminal (3).

2. The motor lead-out sealing structure according to claim 1, characterized in that, The bottom of the terminal block (2) is provided with a positioning boss (21), which cooperates with the outlet position (11), and the outer periphery of the outlet position (11) is provided with a first sealing groove (12), and the first sealing ring (4) is provided in the first sealing groove (12) to form a seal between the terminal block (2) and the base (1).

3. The motor lead-out sealing structure according to claim 1, characterized in that, The terminal block (2) has multiple wire holes (22) in the middle, and the number of wire holes (22) is consistent with the number of terminals (3).

4. The motor lead-out sealing structure according to claim 3, characterized in that, The terminal block (2) is provided with multiple limiting grooves (23), and the limiting grooves (23) correspond one-to-one with the wire holes (22).

5. The motor lead-out sealing structure according to claim 4, characterized in that, The connector (3) includes a cylindrical body (31), a limiting plate (32), a threaded connection part (33), and a terminal (34). The cylindrical body (31) is used to seal the lead wire. The limiting plate (32) is adapted to the limiting groove (23). The limiting plate (32) abuts against the limiting groove (23). The threaded connection part (33) and the terminal (34) both pass through the wire hole (22).

6. The motor lead-out sealing structure according to claim 5, characterized in that, The limiting plate (32) has a second sealing groove (321) on the side near the threaded connection part (33), and the second sealing ring (5) is disposed in the second sealing groove (321) to form a seal between the terminal block (2) and the connector (3).

7. The motor lead-out sealing structure according to claim 5, characterized in that, The threaded connection part (33) is connected to a fastener (35), which locks the connector (3) onto the terminal block (2).

8. The motor lead-out sealing structure according to claim 1, characterized in that, The terminal block (2) is provided with bolt holes (24), and a fixing bolt (25) is provided in the bolt holes (24). The terminal block (2) is locked onto the base (1) by the fixing bolt (25).

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