A stator lead isolation sealing gasket and motor having the same
By designing an isolation sealing gasket at the motor stator leads, the condensation problem caused by temperature differences was solved, thereby improving the insulation performance and lifespan of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU GENERATOR AUTOMOTIVE ELECTRICAL SYST CO LTD
- Filing Date
- 2024-12-09
- Publication Date
- 2026-07-21
AI Technical Summary
The condensation problem caused by the difference between the internal high temperature and the external normal temperature in existing motors leads to oxidation of the stator leads and three-phase wire assembly, affecting the motor's insulation performance and service life.
Design a stator lead wire isolation sealing gasket, including an isolation gasket body, a wire threading structure, a fastening mechanism, a support frame and a sealing gasket body. It adopts a combination of rubber material and metal frame, which are connected by a vulcanization process and installed on the motor rear cover to form an effective isolation and sealing structure.
It effectively isolates the high-temperature transmission inside the motor, prevents condensation, reduces oxidation, improves the motor's insulation performance and service life, and reduces the failure rate.
Smart Images
Figure CN224537930U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motors, specifically to an isolation sealing gasket for stator leads and a motor having the isolation sealing gasket. Background Technology
[0002] As the new energy vehicle market continues to mature, the performance requirements for drive motors in new energy vehicles are gradually increasing. Furthermore, drive motors are currently trending towards high-voltage platforms, and the market and users are placing higher demands on the protection level and insulation performance of drive motors in new energy vehicles.
[0003] The operating conditions of a car and the external environment are complex and changeable, and the operating conditions of the drive motor also face sudden changes. In particular, when the motor is running at full power, a lot of heat will be generated inside the motor.
[0004] Currently, most automotive motors do not isolate the internal and external parts of the motor, and the three-phase junction box is generally located at the rear of the motor, which is far from the main heat source and cools down quickly. When the motor is working, the high internal temperature is transferred to the stator leads and the assembly of the three-phase wires. The impact between the external room temperature and the internal high temperature causes condensation. Over time, the stator leads and the assembly of the three-phase wires oxidize, which can lead to defects such as reduced motor insulation, performance, and service life.
[0005] These defects may lead to customer complaints, high after-sales failure rates, and other problems, resulting in direct and indirect economic losses for the company.
[0006] While the existing patent 202211350190.0 - motor lead wire wiring structure, junction box and motor can reduce condensation in the junction box to some extent, the overall structure is relatively simple and requires separate installation, which involves many installation steps.
[0007] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing motor structure. Utility Model Content
[0008] The purpose of this invention is to provide an isolation and protection structure that can avoid or reduce condensation in the junction box caused by the temperature difference between the inside and outside of the motor.
[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0010] An isolation sealing gasket for stator leads includes an isolation gasket body, wherein the isolation gasket body is provided with a threading structure for stator leads to pass through;
[0011] The threading structure includes threading holes provided on the isolation pad.
[0012] The isolation pad is also provided with a fastening mechanism, which includes fastening holes provided on the isolation pad.
[0013] The isolation pad includes a sealing pad, and the threading structure is disposed on the sealing pad.
[0014] The isolation pad also includes a support frame, which is disposed inside the sealing pad.
[0015] The supporting frame includes a frame body, which has clearance holes, and the supporting frame is a ring structure.
[0016] The threading structure also includes a threading post disposed on the isolation pad, and the threading hole in each threading structure passes through both the isolation pad and the threading post.
[0017] The sealing gasket is made of rubber material; the supporting frame is a metal frame, and the supporting frame is connected to the sealing gasket through a vulcanization process.
[0018] An electric motor includes an electric motor body, a rear cover of the electric motor body, and an isolation sealing gasket for the stator leads on the rear cover of the electric motor.
[0019] The motor rear cover is provided with a through slot for the stator leads to pass through;
[0020] The motor rear cover includes a rear cover body, on which a junction box is provided; the wire through groove is provided on the junction box and is connected to the inside of the motor body; the isolation sealing gasket covers the wire through groove.
[0021] The edge of the wire-passing groove is provided with a support protrusion; the isolation sealing gasket is installed on the support protrusion by a fastening mechanism; the side of the isolation sealing gasket is in contact with the inner wall of the adjacent junction box.
[0022] The advantages of this utility model are:
[0023] This utility model discloses an isolation sealing gasket for stator leads and a motor having the isolation sealing gasket.
[0024] The isolation sealing gasket disclosed in this utility model can be fitted onto the stator leads of the motor and installed on the rear cover of the motor. The isolation sealing gasket disclosed in this utility model plays a good role in isolation and sealing. It can effectively isolate the transmission of high temperature inside the motor, prevent the high temperature inside the motor from being transmitted to the stator leads and the assembly of the three-phase wires during motor operation, and thus prevent condensation caused by the impact of external room temperature and internal high temperature. It also prevents oxidation of the stator leads and the assembly of the three-phase wires after long-term use, and reduces defects such as reduced motor insulation, performance and service life caused by oxidation of the stator leads and the assembly of the three-phase wires. Attached Figure Description
[0025] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:
[0026] Figure 1 This is a schematic diagram of the structure of this utility model.
[0027] Figure 2 This is a bottom view of the present invention.
[0028] Figure 3 for Figure 2 Sectional view of AA.
[0029] Figure 4 for Figure 2 A cross-sectional view of BB.
[0030] Figure 5 This is an exploded view of the present invention.
[0031] Figure 6 This is a schematic diagram of the structure of the isolation sealing gasket when it is installed on the motor rear cover in this utility model.
[0032] Figure 7 This is a schematic diagram of the structure of the isolation sealing gasket when it is installed on the motor body in this utility model.
[0033] The markings in the above figures are all:
[0034] 1. Isolation sealing gasket, 11. Isolation gasket body, 2. Fastening hole, 3. Wire threading structure, 31. Wire threading hole, 4. Support frame, 5. Sealing gasket body, 6. Stator lead wire, 7. Motor rear cover, 8. Motor body. Detailed Implementation
[0035] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.
[0036] An insulating sealing gasket for stator leads includes an insulating gasket body 11, on which a threading structure 3 for stator leads 6 are provided; the threading structure 3 includes a threading hole 31 provided on the insulating gasket body 11; the insulating sealing gasket 1 disclosed in this utility model can be sleeved on the stator leads 6 of a motor and installed on the motor rear cover 7; the insulating sealing gasket 1 disclosed in this utility model plays a good role in isolation and sealing; it can effectively isolate the transmission of high temperature inside the motor, prevent the high temperature inside the motor from being transmitted to the stator leads 6 and the three-phase wire assembly during motor operation, thereby avoiding condensation caused by the impact of external room temperature and internal high temperature, and preventing oxidation of the stator leads 6 and the three-phase wire assembly after long-term use, reducing defects such as reduced motor insulation, performance, and service life caused by oxidation of the stator leads 6 and the three-phase wire assembly.
[0037] The isolation sealing gasket 1 for the stator lead 6 disclosed in this utility model is mainly used for sealing the stator lead 6 at the connection point of the motor back cover 7; reducing or avoiding the transmission of high internal motor temperature to the connection or assembly point of the stator lead 6 and the three-phase wires during motor operation, and avoiding problems such as oxidation at the connection point of the stator lead 6 and the three-phase wires caused by condensation due to temperature difference.
[0038] Specifically, the stator lead 6 isolation sealing gasket 1 disclosed in this utility model mainly includes an isolation gasket body 11, which is the main structure of the isolation sealing gasket 1 and is a plate structure. In addition, the isolation gasket body 11 in this utility model is provided with a threading structure 3 for the stator lead 6 to pass through. The threading structure 3 includes a threading hole 31 provided on the isolation gasket body 11. The provision of the threading structure 3 facilitates the arrangement of the stator lead 6 through the isolation gasket body 11 during subsequent use, and facilitates the connection between the stator lead 6 and the three-phase lines during subsequent use.
[0039] In this utility model, multiple threading structures 3 can be provided on the isolation pad 11. In actual production, by controlling the size of the threading hole 31, one, two or three threading structures 3 can be provided; the specific design can be made according to the needs. When one or two are provided, the two stator leads 6 can be selected to pass through one threading hole 31.
[0040] To facilitate the separate connection of stator leads 6, three threading structures 3 are provided on the isolation pad 11 in this utility model. The three threading structures 3 are used for the connection of one stator lead 6.
[0041] Furthermore, the isolation pad 11 in this utility model is also provided with a fastening mechanism, which includes a fastening hole 2 provided on the isolation pad 11. The fastening mechanism of this utility model facilitates the subsequent fasteners to pass through the corresponding fastening hole 2 and be connected to the motor rear cover 7, thereby achieving a stable connection of the isolation sealing pad 1 on the motor rear cover 7.
[0042] Furthermore, in this utility model, the isolation pad 11 includes a sealing pad 5, and the threading structure 3 is disposed on the sealing pad 5. In subsequent use, the sealing pad 5 of this utility model can not only play an isolation role, but also ensure the sealing performance of the assembly of the isolation sealing pad 1 and the motor rear cover 7 through its own deformation, thereby better reducing the transmission of high temperature inside the motor through the isolation sealing pad 1 to the outside of the motor body 8.
[0043] Furthermore, in this utility model, the isolation pad 11 also includes a support frame 4, which is disposed inside the sealing pad 5; the support frame 4 mainly serves as an internal support, which effectively ensures the structural strength of the isolation sealing pad 1.
[0044] Furthermore, in this utility model, the support frame 4 includes a frame body 41, the frame body 41 is provided with a clearance hole 42, and the support frame 4 is a ring structure; based on the above design, the support frame 4 is mainly arranged at the edge of the sealing gasket 5. The clearance hole 42 facilitates the subsequent threading of the stator lead 6 on the sealing gasket 5, and at the same time facilitates the deformation of the sealing gasket 5 itself to bind it to the stator lead 6.
[0045] In this invention, the sealing gasket 5 is made of rubber material; therefore, the sealing gasket 5 has a good self-deformation capability. So, in subsequent use, the wire hole 31 on the sealing gasket 5 can be bound to the stator lead 6, avoiding gaps at the connection between the sealing gasket 5 and the stator lead 6.
[0046] In this utility model, the supporting frame 4 is a metal frame, which can be a steel frame or an aluminum alloy frame, and can be selected according to the needs.
[0047] In addition, in this utility model, the support frame 4 and the sealing gasket 5 are connected by a vulcanization process; this arrangement effectively ensures the stability of the connection between the support frame 4 and the sealing gasket 5.
[0048] Furthermore, the wire threading structure 3 described in this utility model also includes a threading post 32 disposed on the isolation pad 11. The wire threading hole 31 in each wire threading structure 3 is disposed to pass through both the isolation pad 11 and the threading post 32. The placement of the threading post 32 in this utility model increases the contact area between the isolation sealing pad 1 and the stator lead 6, thereby better ensuring the sealing performance at the connection between the isolation sealing pad 1 and the stator lead 6.
[0049] Meanwhile, in this utility model, the through-pin 32 and the sealing gasket 5 are integrated into one design. Both the through-pin 32 and the sealing gasket 5 are made of rubber material. This design allows the through-pin 32 to deform and be bound to the stator lead 6.
[0050] An electric motor includes a motor body 8, a rear cover 7 on the motor body 8, and an isolation sealing gasket 1 for the stator leads 6 on the rear cover 7. The isolation sealing gasket 1 disclosed in this utility model is sleeved on the stator leads 6 of the motor and installed on the rear cover 7. The isolation sealing gasket 1 disclosed in this utility model plays a good role in isolation and sealing, effectively isolating the transmission of high temperature inside the motor, preventing the high temperature inside the motor from being transmitted to the stator leads 6 and the three-phase wire assembly during operation, thereby avoiding condensation caused by the impact of external room temperature and internal high temperature, and preventing oxidation of the stator leads 6 and the three-phase wire assembly after long-term use, reducing defects such as reduced motor insulation, performance, and service life caused by oxidation of the stator leads 6 and the three-phase wire assembly.
[0051] Furthermore, the motor rear cover 7 described in this utility model is provided with a through groove 73 for the stator lead 6 to pass through; the through groove 73 facilitates the stator lead 6 to pass through the motor body 8 and the motor rear cover 7.
[0052] In addition, the motor rear cover 7 described in this utility model includes a rear cover body 71, which is mainly the main structure of the motor rear cover 7. A junction box 72 is provided on the rear cover body 71 in this utility model. The junction box 72 provides an installation and fixing position for the connection between the stator lead 6 and the three-phase line.
[0053] Meanwhile, in this utility model, the wire-passing groove 73 is provided on the junction box 72, and the wire-passing groove 73 is connected to the inside of the motor body 8; the isolation sealing gasket 1 covers the wire-passing groove 73; the isolation sealing gasket 1 of this utility model plays a very good blocking and sealing role, effectively isolating the high temperature inside the motor body 8 from being transmitted to the junction box 72 through the wire-passing groove 73; thereby avoiding condensation caused by the impact of external room temperature and internal high temperature, and avoiding oxidation of the stator lead wire 6 and the three-phase wire assembly after long-term use, reducing defects such as reduced motor insulation, performance, and service life caused by oxidation of the stator lead wire 6 and the three-phase wire assembly.
[0054] Furthermore, in this utility model, a support protrusion 74 is provided at the edge of the wire through groove 73; the isolation sealing gasket 1 is installed on the support protrusion 74 by a fastening mechanism; the side of the isolation sealing gasket 1 is in contact with the inner wall of the adjacent junction box 72; in this utility model, the support protrusion 74 serves as a support frame and also facilitates the fixed installation of the isolation sealing gasket 1 in the junction box 72.
[0055] specific:
[0056] The isolation sealing gasket 1 disclosed in this utility model can effectively isolate the transmission of high temperature inside the motor. The high temperature inside the motor is blocked by the isolation sealing gasket 1 and will not be transmitted too quickly, thus reducing heat radiation and playing a role in thermal insulation. It avoids motor failure caused by condensation due to internal and external high temperature impact. While protecting the motor from failure, it also plays a better airtight role.
[0057] The isolation sealing gasket 1 disclosed in this utility model is supported by a steel structure frame inside and wrapped with rubber on the outside. It can be fastened to the motor body 8 with screws. When the rubber is compressed, it can play a sealing role. The isolation sealing gasket 1 reduces condensation and oxidation caused by temperature shock, reduces the failure rate of motor, and also plays a better airtight role, reducing customer quality claims and improving customer satisfaction.
[0058] Obviously, the specific implementation of this utility model is not limited to the above-mentioned methods. Any non-substantial improvements made using the inventive concept and technical solution of this utility model are within the protection scope of this utility model.
Claims
1. A sealing gasket for stator leads, characterized in that, The device includes an isolation pad, which comprises a sealing pad made of rubber material and a support frame disposed inside the sealing pad. The isolation pad is provided with a threading structure for stator lead wires to pass through. The threading structure includes threading holes disposed on the sealing pad.
2. The stator lead isolation sealing gasket according to claim 1, characterized in that, The isolation pad is also provided with a fastening mechanism, which includes fastening holes provided on the isolation pad.
3. A stator lead insulating sealing gasket according to any one of claims 1-2, characterized in that, The threading structure is installed on the sealing gasket.
4. The stator lead isolation sealing gasket according to claim 3, characterized in that, The supporting frame includes a frame body, which has clearance holes, and the supporting frame is a ring structure.
5. The stator lead isolation sealing gasket according to claim 1, characterized in that, The threading structure also includes a threading post disposed on the isolation pad, and the threading hole in each threading structure passes through both the isolation pad and the threading post.
6. The stator lead isolation sealing gasket according to claim 4, characterized in that, The support frame is a metal frame, and the support frame is connected to the sealing gasket through a vulcanization process.
7. An electric motor, characterized in that, The device includes a motor body, on which a motor rear cover is provided, and on which a stator lead isolation sealing gasket as described in any one of claims 1-6 is provided.
8. The motor according to claim 7, characterized in that, The motor rear cover is provided with a through slot for the stator leads to pass through; The motor rear cover includes a rear cover body, on which a junction box is provided; the wire through groove is provided on the junction box and is connected to the inside of the motor body; the isolation sealing gasket covers the wire through groove.
9. The motor according to claim 8, characterized in that, The edge of the wire-passing groove is provided with a support protrusion; the isolation sealing gasket is installed on the support protrusion by a fastening mechanism; the side of the isolation sealing gasket is in contact with the inner wall of the adjacent junction box.