An integrated electrical connector based on shielding function

Abstract

The present invention relates to an integrated electrical connector based on a shielding function, comprising a shielding spring, a terminal block, a housing, and a mounting plate. The terminal block is clamped in the housing, the mounting plate is sleeved on the outer periphery of the housing, and the shielding spring is sleeved on the mounting plate. The shielding spring, the mounting plate, and the motor controller housing together form a shielding cavity. The terminal block and a first sealing ring for sealing between the housing and the terminal block are sleeved at a position in the middle of the terminal block near the motor controller. A C-shaped retaining ring for limiting the terminal block is sleeved at a position in the middle of the terminal block near the motor. A lip-shaped sealing ring for sealing between the electrical connector and the motor controller housing is sleeved at one end of the housing near the motor controller. A fourth sealing ring for sealing between the housing and the mounting plate is sleeved at a position in the middle of the housing that contacts the mounting plate. A sixth sealing ring for protecting the shielding spring from contamination is also sleeved on a panel of the mounting plate parallel to the housing.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, and in particular to an integrated electrical connector based on shielding function. Background Art

[0002] Currently, most three-phase AC connections between motor controllers and motors use high-voltage wiring harnesses with shielded cables. At the three-phase connector, a shielding braid is crimped under a contact assembly (consisting of a valve body and a spring assembly) and assembled onto the cable. The contact assembly is tightened to secure it in place, and the spring of the contact assembly contacts the metal housing, grounding the shield. While this three-phase connection scheme can effectively connect the shielding braid to the housing for grounding, providing electromagnetic shielding, it is expensive and bulky, making it difficult to integrate the system. Furthermore, a very small number of motor controllers and motors use a direct three-phase connection, but this connection method does not take into account EMC (electromagnetic compatibility) design optimization, and is complex and expensive. Summary of the Invention

[0003] The purpose of the present invention is to provide an integrated electrical connector based on shielding function. The shielding structure of the product can work together with the motor controller housing to shield the electromagnetic interference generated by the motor controller and ensure normal communication of the entire system.

[0004] The present invention provides an integrated electrical connector based on shielding function, including a shielding spring, multiple wiring terminals, a shell and a mounting plate. The wiring terminals are clamped in the shell, the mounting plate is sleeved on the outer periphery of the shell, and the shielding spring is sleeved on the mounting plate. A shielding cavity is formed between the shielding spring, the mounting plate and the motor controller shell.

[0005] Furthermore, the terminal block is a cylindrical structure, one end of the terminal block is connected to the wiring harness of the motor, and the other end is connected to the copper busbar of the motor controller.

[0006] Furthermore, a first groove is formed on the connecting terminal, and a first sealing ring is sleeved in the first groove and arranged between the connecting terminal and the housing.

[0007] Furthermore, a second groove is provided around the connecting terminal, and a C-shaped clamping ring is sleeved on the second groove to limit the connecting terminal installed in the housing.

[0008] Furthermore, a third groove is provided at one end of the shell close to the motor controller, and a third sealing ring is sleeved in the third groove between the integrated electrical connector and the motor controller shell. The third sealing ring is a lip-type sealing ring with a double-peak structure in cross section.

[0009] Furthermore, a fourth groove is provided around the portion of the housing that contacts the mounting plate. A fourth sealing ring is sleeved in the fourth groove and is located between the housing and the mounting plate. The fourth sealing ring has an elliptical shape and a circular cross-section.

[0010] Furthermore, a snap-fit ​​structure is provided between the housing and the mounting plate to ensure that the two are securely fixedly connected. The cross-section of the mounting plate is a T-shaped structure, and the mounting plate is fixedly connected to the motor housing by bolts.

[0011] Furthermore, a fifth groove is formed on a panel of the mounting plate parallel to the housing, and the shielding spring is sleeved in the fifth groove on the mounting plate.

[0012] Furthermore, a sixth groove is formed on the panel of the mounting plate parallel to the shell, and a sixth sealing ring for protecting the shielding spring is sleeved in the sixth groove. The sixth sealing ring has an elliptical structure and a circular cross-section.

[0013] Furthermore, a seventh groove is provided on the portion of the mounting plate that contacts the motor housing and is perpendicular to the panel of the housing. A seventh sealing ring is provided inside the seventh groove between the mounting plate and the motor housing. The seventh sealing ring has an elliptical shape and a double-peak cross-section.

[0014] The shielding-based integrated electrical connector of the present invention is mounted on the motor housing, with the high-voltage terminals connected to the motor's wiring harness and the motor controller's copper busbar, respectively. The motor controller then converts the battery pack's DC power into three-phase AC power, which is then driven by the three high-voltage terminals of the integrated electrical connector. The shielding spring, mounting plate, and motor controller housing of the integrated electrical connector together form a shielded cavity. This integrated electrical connector has built-in shielding and a compact structure, eliminating wiring harnesses and shielding layers compared to existing products, reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded schematic diagram of an integrated electrical connector;

[0016] Figure 2 is a first cross-sectional view of the integrated electrical connector;

[0017] Figure 3 is a second cross-sectional view of the integrated electrical connector;

[0018] Figure 4 It is a cross-sectional view of the connection between the integrated electrical connector, the motor controller housing, and the motor housing;

[0019] Figure 5 It is a cross-sectional view of the snap-fit ​​structure between the housing and the mounting plate of the integrated electrical connector;

[0020] Figure 6 It is a cross-sectional view of a partially enlarged portion of the snap-fit ​​structure.

[0021] In the figure, 1. shielding spring; 2. terminal; 3. housing; 4. mounting plate; 5. motor controller housing; 6. first groove; 7. first sealing ring; 8. second groove; 9. C-type retaining ring; 10. third groove; 11. third sealing ring; 12. fourth groove; 13. fourth sealing ring; 14. snap structure; 15. motor housing; 16. fifth groove; 17. sixth groove; 18. sixth sealing ring; 19. seventh groove; 20. seventh sealing ring; 21. eighth groove; 22. gear bar. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0023] See also Figure 1-Figure 5 , an integrated electrical connector based on shielding function, including a shielding spring 1, a plurality of wiring terminals 2, a shell 3 and a mounting plate 4. The shell 3 has a plurality of holes that penetrate and are not connected to each other. The wiring terminals 2 are clamped in the holes of the shell 3, the mounting plate 4 is sleeved on the outer periphery of the shell 3, and the shielding spring 1 is sleeved on the mounting plate 4. More specifically, the mounting plate 4 is a plate with a through hole in the middle for sleeved on the shell 3, and a panel parallel to the shell 3 extends along the penetration direction of the through hole. The cross section of the mounting plate 4 is roughly T-shaped. A fifth groove 16 is provided on the panel of the mounting plate 4 parallel to the shell 3. The shielding spring 1 is sleeved in the fifth groove 16 on the mounting plate 4. As Figure 4 As shown, a shielding cavity is formed between the shielding spring 1, the mounting plate 4 and the motor controller housing 5. The shielding spring 1 of the integrated electrical connector can work together with the mounting plate 4 and the motor controller housing 5 to shield the electromagnetic interference generated by the motor controller, ensuring normal communication of the entire system. In this embodiment, the terminal 2 is a high-voltage terminal and is provided in three pieces. The terminal 2 is a cylindrical structure. One end of the terminal 2 is connected to the wiring harness of the motor, and the other end is connected to the copper bus of the motor controller. The shielding spring 1 has an oval structure and is made of spring steel; the housing 3 is made of PA66+25GF (nylon 66 with 25% glass fiber added), which serves to fix the terminal 2; the terminal 2 is made of nickel-plated T2 copper; and the mounting plate 4 is made of aluminum alloy.

[0024] A first groove 6 is formed in the middle of the terminal block 2, near the motor controller. A first sealing ring 7 is fitted within this groove. This O-ring is made of AEM rubber and provides a seal between the terminal block 2 and the housing 3. A second groove 8 is also formed in the middle of the terminal block 2, near the motor. A C-shaped retaining ring 9 is fitted within this groove. This C-shaped retaining ring is made of PA66+25GF (nylon 66 with 25% glass fiber) and serves to position the terminal block 2 within the housing 3.

[0025] See also Figure 1-Figure 5 A third groove 10 is provided at one end of the housing 3 near the motor controller, and a third sealing ring 11 is sleeved in the third groove 10. The third sealing ring 11 is a lip-shaped sealing ring made of silicone rubber with a double-peak cross-section. The third sealing ring 11 seals between the electrical connector and the motor controller housing 5. A fourth groove 12 is provided at the middle of the housing 3 where it contacts the mounting plate 4. A fourth sealing ring 13 is sleeved in the fourth groove 12. The fourth sealing ring 13 is elliptical in shape, made of AEM rubber, and has a circular cross-section. The fourth sealing ring 13 seals between the housing 3 and the mounting plate 4. Please refer to Figure 5 , a snap-fit ​​structure 14 is further provided between the housing 3 and the mounting plate 4. More specifically, as Figure 5 and Figure 6 As shown, the snap-fit ​​structure 14 includes an eighth groove 21 arranged in a ring on the shell 3 and a stop bar 22 of the mounting plate 4 protruding inwardly from the panel of the shell 3. The cross-section of the stop bar 22 is triangular. The stop bar 22 on the mounting plate 4 is pressed into the eighth groove 21 on the shell 3. After being pressed in, it cannot be removed except by destructive disassembly to ensure that the shell 3 and the mounting plate 4 are reliably fixed.

[0026] See also Figures 1-6 , bolt holes are provided on the four corners of the panel of the mounting plate 4 perpendicular to the housing 3, and the mounting plate 4 is fixedly connected to the motor housing 15 by bolts. A sixth groove 17 is also provided on the panel of the mounting plate 4 parallel to the housing 3, and a sixth sealing ring 18 is sleeved in the sixth groove 17. Among them, the sixth sealing ring 18 is generally an elliptical structure, made of silicone rubber, and has a circular cross-section. The sixth sealing ring 18 protects the shielding spring 1 from being contaminated by external water or dust. A seventh groove 19 is provided on the panel of the mounting plate 4 perpendicular to the housing 3, and the part in contact with the motor housing 15 is provided. A seventh sealing ring 20 is arranged in the seventh groove 19. Among them, the seventh sealing ring 20 has an elliptical structure, is made of silicone rubber, and has a double-peak structure in cross-section. The seventh sealing ring 20 plays a sealing role between the mounting plate 4 and the motor housing 15.

[0027] When assembling this shielding-based integrated electrical connector, first, a first groove 6 is formed on the terminal 2 to accommodate the first sealing ring 7, and a second groove 8 is formed to accommodate the C-shaped retaining ring 9. The terminal 2 is then pressed into the housing 3. The terminal 2 and housing 3 are milled flat to prevent rotation after being pressed in. Furthermore, a seventh groove 19 is formed on the panel of the mounting plate 4 perpendicular to the housing 3, in contact with the motor housing 15, to accommodate the seventh sealing ring 20. The housing 3 also has a fourth groove 12 to accommodate the fourth sealing ring 13. The housing 3 is then pressed into the mounting plate 4. The corresponding snap-fit ​​structures 14 on the housing 3 and mounting plate 4 ensure a secure and fixed connection between the two. Finally, the lip seal is installed into the third groove 10 of the housing 3, the shielding spring 1 is installed into the fifth groove 16 of the mounting plate 4, and the sixth sealing ring 18 is installed into the sixth groove 17 of the mounting plate 4.

[0028] In summary, the shielding-based integrated electrical connector of the present invention is installed on the motor housing 15, with the two ends of the terminal block 2 connected to the motor's wiring harness and the copper busbar of the motor controller, respectively. At this point, the motor controller converts the DC power of the battery pack into three-phase AC power, which is then driven to operate the motor through the three terminals 2 of the integrated electrical connector. The shielding spring 1, mounting plate 4, and motor controller housing 5 of the integrated electrical connector together form a shielding cavity. This integrated electrical connector has its own shielding function and a compact structure. Compared with existing products, it saves on wiring harnesses and shielding layers, thus reducing costs.

[0029] In this document, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms based on specific circumstances.

[0030] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description, and therefore should not be understood as limiting the present invention.

[0031] In this article, the sequential adjectives "first", "second", "third", etc. used to describe elements are only used to distinguish elements with similar attributes, and do not mean that the elements described in this way must follow a given order, or be subject to time, space, level or other restrictions.

[0032] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An integrated electrical connector based on shielding function, characterized in that: The invention comprises a shielding spring (1), a plurality of wiring terminals (2), a housing (3) and a mounting plate (4), wherein the wiring terminals (2) are clamped in the housing (3), the mounting plate (4) is sleeved on the outer periphery of the housing (3), the shielding spring (1) is sleeved on the mounting plate (4), and a shielding cavity is formed between the shielding spring (1), the mounting plate (4) and the motor controller housing (5); a fourth groove (12) is provided around the contact portion between the housing (3) and the mounting plate (4), and a fourth groove (12) is provided inside the fourth groove (12). A fourth sealing ring (13) is provided between the housing (3) and the mounting plate (4); a fifth groove (16) is provided on a panel of the mounting plate (4) parallel to the housing (3), and the shielding spring (1) is provided in the fifth groove (16) on the mounting plate (4); a third groove (10) is provided at one end of the housing (3) close to the motor controller, and a third sealing ring (11) is provided between the integrated electrical connector and the motor controller housing (5) in the third groove (10).

2. The integrated electrical connector based on shielding function according to claim 1, characterized in that: The wiring terminal (2) is a cylindrical structure, one end of the wiring terminal (2) is connected to the wiring harness of the motor, and the other end is connected to the copper bus of the motor controller.

3. The integrated electrical connector based on shielding function according to claim 1, characterized in that: A first groove (6) is provided on the upper ring of the wiring terminal (2), and a first sealing ring (7) is sleeved in the first groove (6) and is located between the wiring terminal (2) and the housing (3).

4. The integrated electrical connector based on shielding function according to claim 1, characterized in that: A second groove (8) is also provided around the connecting terminal (2), and a C-shaped clamping ring (9) is sleeved on the second groove (8) to limit the connecting terminal (2) installed in the housing (3).

5. The integrated electrical connector based on shielding function according to claim 2, characterized in that: The third sealing ring (11) is a lip-shaped sealing ring, and its cross section is a double-peak structure.

6. The integrated electrical connector based on shielding function according to claim 1, characterized in that: The fourth groove (12) is provided in the middle of the housing (3); the fourth sealing ring (13) has an elliptical structure and a circular cross-section.

7. The integrated electrical connector based on shielding function according to claim 1, characterized in that: A snap-fit ​​structure (14) is also provided between the housing (3) and the mounting plate (4) to ensure a reliable fixed connection between the two. The cross-section of the mounting plate (4) is a T-shaped structure, and the mounting plate (4) is fixedly connected to the motor housing (15) via bolts.

8. The integrated electrical connector based on shielding function according to claim 7, characterized in that: A sixth groove (17) is also provided on a panel of the mounting plate (4) parallel to the housing (3), and a sixth sealing ring (18) for protecting the shielding spring (1) is provided in the sixth groove (17). The sixth sealing ring (18) has an elliptical structure and a circular cross-section.

9. The integrated electrical connector based on shielding function according to claim 7, characterized in that: A seventh groove (19) is provided on a portion of the mounting plate (4) perpendicular to the housing (3) and in contact with the motor housing (15). A seventh sealing ring (20) is provided inside the seventh groove (19) and between the mounting plate (4) and the motor housing (15). The seventh sealing ring (20) has an elliptical shape and a double-peak cross-section.

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