C-eps motor electronic control assembly

Abstract

The utility model provides a C - EPS motor electric control assembly, including motor connector, motor, PCBA and protective cover, motor connector is connected with the end cover of motor, PCBA sets up on the end cover of motor, the protective cover sets up on the end cover of motor, be equipped with positioning unit on motor connector, positioning unit can improve the installation positioning accuracy of motor connector, reduce production cost, can improve the protection level through the glue sealing at motor connector, motor end cover place, the sealing surface is limited to the plane of connector and motor cooperation, the cooperation plane of protective cover and motor, reliable structure is favorable to improve the sealing performance, avoid the surface dewdrop of electric control module and enter PCBA through the gap, realize the coverage of diversified environmental conditions, the utility model provides a C - EPS motor electric control assembly protection level is high, can effectively avoid the surface dewdrop of electric control module and enter PCBA through the gap, positioning accuracy is high, can realize the coverage of diversified environmental conditions.

Description

Technical Field

[0001] This utility model belongs to the field of C-EPS motor electronic control, specifically, this utility model relates to a C-EPS motor electronic control assembly. Background Technology

[0002] Currently, the mainstream approach in C-EPS steering systems is to integrate the controller onto the motor, treating the motor and electronic control as a single module. The C-EPS motor and electronic control are located in the driver's cab. However, this current integrated structure has a relatively low protection level, only sufficient for general environments. With more and more Chinese cars being exported overseas, actual operating conditions have changed significantly, demanding higher protection levels from the system. The current method of riveting the protective cover to the motor's rear cover is no longer adequate for some low-temperature operating conditions. In extreme cold conditions, the large temperature difference between the PCBA and the environment during system operation exacerbates condensation. Water droplets condense on the surface of the electronic control module and enter the PCBA through gaps, causing circuit malfunctions. In existing technology, the protective cover's protection level for the PCBA is insufficient to cover more diverse operating conditions. The positioning structure at the connector and motor connection is unreasonable, using press-fit screws and screw holes, which cannot meet installation accuracy and increases manufacturing costs.

[0003] To address the aforementioned issues, patent application number 2025102767092 discloses a P-EPS structure for unmanned delivery vehicles, including an electric steering assembly. The electric steering assembly further includes a power steering housing assembly and a main housing assembly. The main housing assembly can be replaced by a replacement component to adapt to a C-EPS steering system. The power steering housing assembly includes a spindle assembly, an intermediate housing assembly, a worm gear assembly, a sensor housing assembly, and a sensor wiring harness assembly, but it fails to solve the aforementioned problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, a C-EPS motor control assembly is provided that has a high level of protection, can effectively prevent condensation droplets on the surface of the electrical control module from entering the PCBA through gaps, has high positioning accuracy, can cover diverse environmental conditions, is easy to assemble, and helps reduce design and manufacturing costs. Summary of the Invention

[0005] This utility model is designed to solve the aforementioned problems. Its purpose is to provide a C-EPS motor control assembly with high protection levels, effectively preventing condensation droplets from the surface of the electrical control module from entering the PCBA through gaps; high positioning accuracy; coverage of diverse environmental conditions; ease of assembly; and reduced design and manufacturing costs. To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a C-EPS motor control assembly, which includes a motor connector, a motor, a PCBA, and a protective cover. The motor connector is connected to the end cover of the motor, the PCBA is disposed on the end cover of the motor, the protective cover is disposed on the end cover of the motor, and the motor connector is provided with a positioning unit.

[0006] The C-EPS motor control assembly provided by this utility model may also have the following feature: the positioning unit includes a first positioning protrusion, a second positioning protrusion and a third positioning protrusion, and the first positioning protrusion, the second positioning protrusion and the third positioning protrusion are disposed on the connector body.

[0007] The C-EPS motor control assembly provided by this utility model may also have the following feature: the positioning unit further includes screw holes provided on the connector body.

[0008] The C-EPS motor control assembly provided by this utility model may also have the following feature: a first glue storage surface is provided on the side of the connector body near the end cover of the motor, and a first protrusion is provided on the glue storage surface.

[0009] The C-EPS motor control assembly provided by this utility model may also have the following feature: a second glue storage surface is provided on the part of the end cover that mates with the motor connector, and a second protrusion is provided on the second glue storage surface.

[0010] The C-EPS motor control assembly provided by this utility model may also have the following feature: a glue storage tank is provided on the side of the motor end cover near the protective cover.

[0011] The C-EPS motor control assembly provided by this utility model may also have the following features: the end cover of the motor is provided with a positioning post, and the PCBA is provided with a positioning hole that matches the positioning post.

[0012] The C-EPS motor control assembly provided by this utility model may also have the following features: the end cover is provided with a heat dissipation area that is compatible with the heat dissipation module on the PCBA, and thermal conductive grease is filled between the end cover and the PCBA.

[0013] The C-EPS motor control assembly provided by this utility model may also have the following features: the motor end cover is provided with a snap-fit ​​protrusion, and the edge of the protective cover is flanged.

[0014] The C-EPS motor control assembly provided by this utility model may also have the following feature: the bottom of the snap-fit ​​protrusion is provided with a recess, which is a riveting process hole for riveting connection.

[0015] The technical advantages of this utility model are as follows: The C-EPS motor control assembly provided by this utility model includes a motor connector, a motor, a PCBA, and a protective cover. The motor connector is connected to the end cover of the motor, the PCBA is set on the end cover of the motor, and the protective cover is set on the end cover of the motor. The motor connector is provided with a positioning unit, which can improve the installation positioning accuracy of the motor connector, reduce production costs, and improve the protection level by applying glue to seal the motor connector and the motor end cover. The sealing surface is limited to the mating plane of the connector and the motor, and the mating plane of the protective cover and the motor. The structure is reliable, which helps to improve the sealing performance and prevents condensation droplets on the surface of the electrical control module from entering the PCBA through gaps, thus achieving coverage of diverse environmental conditions.

[0016] Therefore, the C-EPS motor control assembly provided by this utility model has a high protection level, which can effectively prevent water droplets on the surface of the electrical control module from entering the PCBA through gaps. It has high positioning accuracy, can cover diverse environmental conditions, is easy to assemble, and helps to reduce design and manufacturing costs. Attached Figure Description

[0017] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the structure of the motor connector in an embodiment of this utility model; Figure 2 This is an exploded view of the C-EPS motor control assembly in an embodiment of this utility model; Figure 3 This is a schematic diagram of the C-EPS motor control assembly in the side view direction in an embodiment of this utility model; Figure 4 This is a schematic diagram of the motor connector and the motor in the side view direction in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the edge of the protective cover in an embodiment of this utility model.

[0018] Figure 6 This is a schematic diagram of the heat dissipation area in an embodiment of this utility model.

[0019] The markings in the diagram are as follows: Motor connector-10, Positioning unit-11, First positioning protrusion-111, Second positioning protrusion-112, Third positioning protrusion-113, Screw hole-114, Glue storage surface-12, Glue storage protrusion-121, Motor-20, End cap-21, Glue storage groove-22, Positioning post-23, Fastening protrusion-24, Heat dissipation area-25, Recess-26, PCBA-30, Protective cover-40, Second Glue storage surface-41, Second protrusion-42. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0021] Figure 1 This is a schematic diagram of the structure of the motor connector in an embodiment of this utility model; Figure 2 This is an exploded view of the C-EPS motor control assembly in an embodiment of this utility model; Figure 3 This is a schematic diagram of the C-EPS motor control assembly in the side view of an embodiment of this utility model.

[0022] like Figure 1 , Figure 2 as well as Figure 3 As shown, the C-EPS motor control assembly provided by this utility model includes a motor connector 10, a motor 20, a PCBA 30, and a protective cover 40. The motor connector is connected to the end cover 21 of the motor 20. The PCBA 30 is disposed on the end cover 21 of the motor 20, and the protective cover 40 is disposed on the end cover 21 of the motor 20. The motor connector 10 is provided with a positioning unit 11. The positioning unit 11 can improve the installation positioning accuracy of the connector body 10, reduce production costs, and improve the compactness of the C-EPS motor control assembly to adapt to the spatial layout around the steering column. At the same time, it ensures that sufficient torque can be output in a small volume. The C-EPS motor control assembly integrates components such as torque sensor, reduction mechanism, and electronic control unit to form a complete power steering system. This integrated design helps to improve the reliability and stability of the system, and also facilitates installation and maintenance.

[0023] The positioning unit 11 includes a first positioning protrusion 111, a second positioning protrusion 112, and a third positioning protrusion 113. The first positioning protrusion 111, the second positioning protrusion 112, and the third positioning protrusion 113 are disposed on the connector body 10, which can facilitate the connection of the connector body 10 to the motor and help improve the positioning and installation accuracy of the connector body 10.

[0024] The positioning unit 11 also includes screw holes 114 provided on the connector body 10. The screw holes 114 are located on both sides of the connector body 10. Screws are inserted into the screw holes 114, which can fasten the connector body 10 to the motor and improve the stability of the connector body 10 during use.

[0025] A first adhesive storage surface 12 is provided on the side of the connector body 10 near the end cover 21 of the motor 20. The first adhesive storage surface 12 is provided with a first protrusion 121. The first protrusion 121 is used to block the gap between the positioning protrusion of the positioning unit 11 and the corresponding clearance part, so as to prevent the adhesive from overflowing. The adhesive storage surface 12 can increase the contact area between the connector body 10 and the end cover 21, expand the bonding area, increase the bonding force between the connector body 10 and the end cover 21, and improve the sealing performance between the connector body 10 and the end cover 21.

[0026] The end cap 21 has a second glue storage surface 41 that mates with the motor connector 10. The second glue storage surface 41 has a second protrusion 42, which is used to block the passage to the inside of the connector through the corresponding clearance part of the buckle on the motor connector 10.

[0027] like Figure 3 As shown, the end cap 21 of the motor 20 has a glue storage tank 22 on the side near the protective cover 40. The glue storage tank 22 is located at the edge of the end cap 21, forming a complete glue storage structure. The sealant is evenly applied inside the glue storage tank 22 to further improve the sealing performance of the C-EPS motor control assembly. The glue layer can act as a barrier to prevent moisture, dust, oil, and other impurities from entering the interior of the C-EPS motor control assembly, avoiding the corrosion and damage of motor components by impurities, and extending the service life of the C-EPS motor control assembly. Especially in some harsh working environments, such as humid, dusty, or corrosive gas environments, the protective effect of the glue is even more important, achieving coverage of diverse environmental conditions. At the same time, the glue can also reduce the transmission of vibration and absorb some vibration energy by acting as a buffer and damper, thereby reducing the noise of the C-EPS motor control assembly during operation, improving the quietness of the C-EPS motor control assembly, and enhancing the ride comfort of the vehicle.

[0028] The end cover 21 of the motor 20 is provided with a positioning post 23, and the PCBA30 is provided with a positioning hole that matches the positioning post 23, thereby improving the positioning accuracy of the PCBA30. The PCBA30 is then fixed by screws.

[0029] Figure 4 This is a schematic diagram of the motor connector and the motor in the side view direction in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the edge of the protective cover in an embodiment of this utility model.

[0030] like Figure 4 and Figure 5As shown, the end cover 21 of the motor 20 is provided with a snap-fit ​​protrusion 24. The snap-fit ​​protrusion 24 can fasten the end cover 21 to the protective cover 40, which facilitates the installation of the protective cover 40. The edge of the protective cover 40 is flanged. After flanging, it is adapted to the glue storage tank 22, which can further improve the sealing performance of the C-EPS motor control assembly, prevent moisture, dust, oil and other impurities from entering the interior of the C-EPS motor control assembly, avoid the erosion and damage of impurities to motor parts, and extend the service life of the C-EPS motor control assembly. Especially in some harsh working environments, such as humid, dusty or corrosive gas environments, the protective effect of the glue is more important, achieving coverage of diverse environmental conditions.

[0031] Figure 6 This is a schematic diagram of the heat dissipation area in an embodiment of this utility model.

[0032] like Figure 6 As shown, the bottom of the snap-fit ​​protrusion 24 is provided with a recess 26, which is a riveting process hole for riveting connection. Other parts are also provided with riveting process hole structures, taking into account the existing riveting connection fixing method.

[0033] like Figure 6 As shown, the end cover 21 has a heat dissipation area 25 adapted to the heat dissipation module on the PCBA 30, and thermally conductive silicone grease is filled between the end cover 21 and the PCBA 30. The heat dissipation area 25 allows heat to flow between the inside and outside of the C-EPS motor control assembly, dissipating heat to the surrounding environment, preventing the C-EPS motor control assembly from overheating, ensuring that the C-EPS motor control assembly operates within the normal operating temperature range, and avoiding performance degradation, shortened lifespan, or even damage to the motor due to high temperatures.

[0034] The C-EPS motor control assembly provided by this utility model includes a motor connector 10, a motor 20, a PCBA 30, and a protective cover 40. The motor connector is connected to the end cover 21 of the motor 20. The PCBA 30 is mounted on the end cover 21 of the motor 20, and the protective cover 40 is mounted on the end cover 21 of the motor 20. The motor connector 10 is provided with a positioning unit 11. The positioning unit 11 can improve the installation positioning accuracy of the connector body 10, reduce production costs, and improve the compactness of the C-EPS motor control assembly to adapt to the spatial layout around the steering column. At the same time, it ensures that sufficient torque can be output in a small volume. The C-EPS motor control assembly integrates components such as torque sensor, reduction mechanism, and electronic control unit to form a complete power steering system. This integrated design helps to improve the reliability and stability of the system, and also facilitates installation and maintenance.

[0035] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A C-EPS motor electronic control assembly, characterized in that, The device includes a motor connector (10), a motor (20), a PCBA (30), and a protective cover (40). The motor connector is connected to the end cover (21) of the motor (20). The PCBA (30) is disposed on the end cover (21) of the motor (20). The protective cover (40) is disposed on the end cover (21) of the motor (20). The motor connector (10) is provided with a positioning unit (11).

2. The C-EPS electric motor control assembly of claim 1, wherein, The positioning unit (11) includes a first positioning protrusion (111), a second positioning protrusion (112), and a third positioning protrusion (113), which are disposed on the motor connector (10).

3. The C-EPS motor control assembly according to claim 2, characterized in that, The positioning unit (11) also includes a screw hole (114) provided on the motor connector (10).

4. The C-EPS motor control assembly according to claim 3, characterized in that, The motor connector (10) has a first glue storage surface (12) on the side of the end cap (21) near the motor (20), and the glue storage surface (12) has a first protrusion (121).

5. The C-EPS motor control assembly according to claim 4, characterized in that, The end cap (21) is provided with a second glue storage surface (41) at the part that mates with the motor connector (10), and a second protrusion (42) is provided on the second glue storage surface (41).

6. The C-EPS motor control assembly according to claim 5, characterized in that, The end cap (21) of the motor (20) is provided with a glue storage tank (22) on the side near the protective cover (40).

7. The C-EPS motor control assembly according to claim 6, characterized in that, The end cap (21) of the motor (20) is provided with a positioning post (23), and the PCBA (30) is provided with a positioning hole that matches the positioning post (23).

8. The C-EPS motor control assembly according to claim 7, characterized in that, The end cap (21) is provided with a heat dissipation area (25) that is compatible with the heat dissipation module on the PCBA (30), and thermal grease is filled between the end cap (21) and the PCBA (30).

9. The C-EPS motor control assembly according to claim 8, characterized in that, The end cap (21) of the motor (20) is provided with a fastening protrusion (24), and the edge of the protective cover (40) is flanged.

10. The C-EPS motor control assembly according to claim 9, characterized in that, The bottom of the snap-fit ​​protrusion (24) is provided with a recess (26), which is a riveting process hole for riveting connection.

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