Automobile connector resistant to electromagnetic interference

Abstract

This invention provides an electromagnetic interference-resistant automotive connector, belonging to the field of automotive connection technology. It includes a core body with multiple connecting terminals inserted inside. Symmetrically arranged socket plates are positioned on the outside of the core body, and a rear cover is inserted between the socket plates. After installation, one end of the connecting terminal protrudes from the rear cover. The rear cover includes a cover body and an end cover. A countersunk hole is formed inside the cover body, and a magnetic bead is placed inside the countersunk hole, with the magnetic bead fitting around the outside of the connecting terminal. A sealing plug is provided on one side of the end cover. When the cover body and end cover are molded together, the sealing plug fits against the end face of the magnetic bead. This invention replaces the existing rear cover with a combinable cover body and end cover, and the sealing plug on one side of the end cover secures the magnetic bead. The combination of the cover body and end cover secures the magnetic bead, replacing the existing adhesive method and avoiding the aging and embrittlement problems of traditional adhesives over long-term use. This ensures the long-lasting and stable electromagnetic interference resistance of the magnetic bead.

Description

Technical Field

[0001] This invention relates to the field of automotive connection technology, and in particular to an automotive connector resistant to electromagnetic interference. Background Technology

[0002] As a fundamental component in automotive electronic systems for transmitting current and signals, the reliability of connectors is directly related to the safety of the entire vehicle. With the popularization of new energy electric vehicles, the number and complexity of electronic control units in vehicles have increased dramatically. In order to ensure the stability of signal transmission and reduce the interference of external electromagnetic fields on the internal terminals of connectors, ferrite beads are usually set inside the connectors to suppress interference on power lines and signal lines. At the same time, ferrite beads also have the ability to absorb electrostatic pulses, enabling electronic devices to meet the corresponding international standards for electromagnetic compatibility and electrostatic discharge.

[0003] Currently, connectors mainly consist of a core body, a back cover, terminals, and ferrite beads. During installation, the terminals are first inserted into the core body, then the ferrite beads are installed inside the back cover. Subsequently, the back cover and the core body are closed, and the ferrite beads are fixed with glue. Finally, sealant is applied to the interface to achieve single-sided waterproofing. Since the ferrite beads are bonded to the back cover with glue, during long-term use, the glue is prone to aging, embrittlement, or decreased adhesion due to temperature changes and vibrations, which can cause the ferrite beads to loosen or even fall off. This not only reduces the anti-interference performance of the ferrite beads but may also cause them to malfunction. Therefore, this application provides an anti-electromagnetic interference automotive connector to meet the requirements. Summary of the Invention

[0004] The purpose of this invention is to provide an electromagnetic interference-resistant automotive connector to solve the aforementioned problems. It replaces the existing rear cover with a combinable cover and end cap, and a sealing plug for fixing a magnetic bead is provided on one side of the end cap. After the cover and end cap are combined, the magnetic bead can be fixed, replacing the existing adhesive fixing method. This avoids the problems of adhesive layer aging and embrittlement that occur with traditional adhesive methods over long-term use, ensuring the magnetic bead's long-lasting and stable electromagnetic interference resistance. It also solves the problem mentioned in the background art where, due to temperature changes and vibration, the adhesive is prone to aging, embrittlement, or decreased adhesion, leading to loosening or even detachment of the magnetic bead, thus affecting its anti-interference performance.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An electromagnetic interference resistant automotive connector includes a core body with multiple connecting terminals inserted inside. Socket plates are symmetrically arranged on the outside of the core body, and a rear cover is inserted between the socket plates. After installation, one end of the connecting terminal protrudes from the rear cover. The rear cover includes a cover body and an end cover. A countersunk hole is formed inside the cover body, and a magnetic bead is disposed inside the countersunk hole, with the magnetic bead sleeved on the outside of the connecting terminal. A sealing plug is provided on one side of the end cover. When the cover body and end cover are molded together, the sealing plug fits against the end face of the magnetic bead. In the above technical solution, by setting the rear cover as a modular assembly and setting a sealing plug for extruding the magnetic beads on one side of the end cover, the magnetic beads can be fixed during mold closing. This not only replaces the existing adhesive fixing method, but also avoids the problem of magnetic beads loosening due to glue aging, and ensures the anti-interference performance of the magnetic beads in the automotive connector during long-term use.

[0006] Based on the above scheme, the cover body is symmetrically provided with first insertion parts on both sides, and the first insertion parts are provided with insertion holes inside. The end cap is symmetrically provided with second insertion parts on the outer side. An insertion plate is fixedly connected to one side of the second insertion part. When the cover body and the end cap are molded together, the insertion plate is inserted into the insertion hole. Through the cooperation between the insertion plate and the insertion hole, the cover body and the end cap can be interlocked and installed, which can ensure the stability of the rear cover after assembly and prevent slippage and misalignment.

[0007] Furthermore, the cover body has an embedded groove inside, and a sealing element is provided on one side of the end cap. The sealing element is inserted into the embedded groove. By inserting the elastic sealing element into the embedded groove, not only can the assembly of the cover body and the end cap be completed, but the gap between the cover body and the end cap can also be sealed, thereby ensuring the waterproof effect of the assembled cover.

[0008] It is worth mentioning that the end cover is provided with multiple heat dissipation components, which consist of heat-absorbing wings and heat dissipation fins. The heat-absorbing wings extend into the recess, and the heat dissipation fins are located on the outside of the end cover. By combining the heat-absorbing wings extending into the recess with the heat dissipation fins on the outside of the end cover, the heat inside the connector can be dissipated, thereby ensuring the stability of the connector's transmission performance.

[0009] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, the electromagnetic interference-resistant automotive connector provided in this application replaces the existing rear cover with a cover body and end cover that can be assembled together. A sealing plug for fixing the magnetic bead is provided on one side of the end cover. After the cover body and end cover are combined, the magnetic bead can be fixed, replacing the existing glue fixing method. This avoids the problem of glue layer aging and embrittlement that occurs with long-term use of traditional glue methods, and can ensure the long-lasting and stable electromagnetic interference resistance of the magnetic bead. Meanwhile, the combined structure of the cover and end cap forms a double-sided protective enclosure for the magnetic bead. Together with the barrier membrane and sealing ring, it can enhance the overall sealing effect of the connector and improve the connector's waterproof capability. It is worth mentioning that after the back cover is assembled, the heat-absorbing wings on the end cover extend to the mounting area of ​​the ferrite bead. Through the heat-absorbing wings and heat dissipation fins, heat can be absorbed and exchanged on the ferrite bead and the connection terminal, thereby reducing the internal operating temperature of the connector and ensuring the stability of signal transmission. Attached Figure Description

[0010] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0011] Figure 1 This is a schematic diagram of the overall structure of the electromagnetic interference automotive connector of the present invention; Figure 2 This is an exploded view of the connector and the rear cover of the present invention; Figure 3 This is an exploded view of the rear cover of the present invention; Figure 4 This is a schematic diagram showing the connection between the cover and the magnetic bead of the present invention; Figure 5 This is a schematic diagram showing the connection between the end cap, sealing plug, and heat sink of the present invention; Figure 6 This is a cross-sectional view of the connector of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a cross-sectional view of the rear cover of the present invention; Figure 9 This is a schematic diagram of the heat sink of the present invention.

[0012] Figure label: 1. Core body; 11. Socket plate; 111. Dovetail groove; 112. Insertion groove; 12. Stop part; 2. Connecting terminal; 3. Rear cover; 31. Cover body; 311. First insertion part; 312. Insertion hole; 313. Embedded groove; 314. Countersunk hole; 32. End cover; 321. Second insertion part; 322. Insertion plate; 323. Sealing element; 4. Magnetic bead; 5. Sealing plug; 51. Ring protrusion; 6. Sealing ring; 7. Heat dissipation element; 71. Heat absorption fin; 72. Heat dissipation fin; 8. Barrier membrane.

[0013] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0014] The electromagnetic interference-resistant automotive connector provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0015] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0016] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0017] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0018] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0019] like Figures 1 to 4 As shown, an embodiment of the present invention provides an electromagnetic interference resistant automotive connector, including a core body 1. Multiple connecting terminals 2 are inserted into the core body 1. Socket plates 11 are symmetrically arranged on the outside of the core body 1. A rear cover 3 is inserted between the socket plates 11. After installation, one end of the connecting terminals 2 protrudes from the rear cover 3. The rear cover 3 includes a cover body 31 and an end cover 32. An inset groove 313 is formed inside the cover body 31. A sealing element 323 is provided on one side of the end cover 32, and the sealing element 323 is inserted into the inset groove 313. Through this design, the rear cover 3 is divided into two assemblable parts. During mold closing, the sealing element 323 is inserted into the inset groove 313, resulting in a sealing effect. Component 323 is made of elastic material. When end cap 32 is combined with cover body 31, it can not only be fixed, but also seal the interface, thereby achieving a waterproof effect. Cover body 31 has a countersunk hole 314 inside, and a magnetic bead 4 is set inside the countersunk hole 314. By setting the magnetic bead 4 inside end cap 32, interference on power lines and signal lines can be suppressed, and the ability to absorb electrostatic pulses can be improved to enhance the stability of signal transmission of connection terminal 2. The magnetic bead 4 is sleeved on the outside of connection terminal 2. A barrier membrane 8 is set on the inner wall of countersunk hole 314. The barrier membrane 8 is made of silicone rubber. The barrier membrane 8 can play a reverse seepage role and improve the waterproof effect of connector.

[0020] Based on the above, such as Figures 5 to 7As shown, a sealing plug 5 is provided on one side of the end cap 32, and an annular protrusion 51 is provided on the outer side of the sealing plug 5. When the cover body 31 and the end cap 32 are molded together, the sealing plug 5 is in contact with the end face of the magnetic bead 4. The magnetic bead 4 is fixed inside the countersunk hole 314 by the end of the sealing plug 5, thereby replacing the existing adhesive method. This not only simplifies assembly but also avoids the curing and separation of adhesives over long-term use, improving the anti-interference effect of the magnetic bead 4. At the same time, the annular protrusion 51 is in contact with the inner wall of the countersunk hole 314. The annular protrusion 51 can seal the end of the countersunk hole 314. Under the action of friction, it can also improve the stability of the cover 31 and end cover 32 after assembly. Both the cover 31 and end cover 32 are provided with sealing rings 6. When the connecting terminal 2 is inserted, the sealing ring 6 is deformed by pressure and sticks tightly to the outer wall of the connecting terminal 2. Through this design, it can be ensured that after the connecting terminal 2 is inserted, both sides of the back cover 3 are in a sealed state, which can ensure the independent effect of the internal space of the cover 31 and end cover 32, and further improve the sealing performance of the connector.

[0021] In this embodiment, as Figure 2 and Figure 3 As shown, the cover 31 has symmetrically arranged first insertion portions 311 on both sides, and the first insertion portions 311 have insertion holes 312 inside. The end cap 32 has symmetrically arranged second insertion portions 321 on the outer side, and an insertion plate 322 is fixedly connected to one side of the second insertion portion 321. When the cover 31 and the end cap 32 are molded together, the insertion plate 322 is inserted into the insertion hole 312. The receiving plate 11 has a dovetail groove 111 inside. Both the first insertion portion 311 and the second insertion portion 321 are trapezoidal. In terms of structure, when the cover 31 and the end cover 32 are molded together, the first insertion part 311 and the insertion hole 312 are combined to form a dovetail block that is adapted to the dovetail groove 111. Through this design, when the rear cover 3 is combined with the rubber core body 1, the combined dovetail block can be clamped inside the dovetail groove 111, which can prevent the cover 31 and the end cover 32 from separating from the socket plate 11. Under the action of the insertion plate 322, the position of the end cover 32 and the cover 31 can be limited to prevent the end cover 32 and the cover 31 from being misaligned vertically.

[0022] Based on the above, the socket plate 11 has an insertion groove 112 inside. When the back cover 3 is combined with the rubber core body 1, the insertion plate 322 is inserted into the insertion groove 112. The top of the rubber core body 1 is provided with a stop part 12, and the bottom of the end cover 32 is provided with a beveled part that matches the stop part 12. When the back cover 3 is assembled between the socket plates 11, the beveled part at the bottom of the end cover 32 abuts against the stop part 12, and under the action of the squeezing force, it drives the back cover 3 to push upward, thereby pressing the insertion plate 322 tightly into the insertion groove 112 to improve the stability of the back cover 3 after assembly.

[0023] In this embodiment, as Figure 8 and Figure 9As shown, the end cap 32 has multiple heat dissipation components 7 inside. Each heat dissipation component 7 consists of heat-absorbing wings 71 and heat dissipation fins 72. The heat-absorbing wings 71 extend into the recessed hole 314, and the heat dissipation fins 72 are located on the outside of the end cap 32. The heat dissipation components 7 and the end cap 32 are integrally formed. First, the heat dissipation components 7 are placed into the mold and the mold is closed. Then, molten rubber is injected into the mold cavity, allowing the molten material to flow and fill around the heat dissipation components 7. After the molten material cools, the heat dissipation components 7 and the end cap 32 become an integral structure. After the end cap 32 is combined with the cap body 31, the heat-absorbing wings 71 Extending into the gap of the countersunk hole 314, the heat-absorbing fin 71 has a curved structure, which can increase the heat absorption area. The heat dissipation fin 72 has a plate-like structure and fins at the end to increase the heat dissipation area. Through this design, the heat inside the connector can be dissipated in time, enhancing the heat dissipation capacity and ensuring the stability of the connector's transmission performance. In addition, multiple protrusions are provided on one side of the end cover 32. The fins at the end of the heat dissipation fin 72 are located inside the protrusions, which can prevent external equipment from contacting the fins during connector installation, so as to ensure the integrity of the heat dissipation component 7.

[0024] Working principle of the invention: First, the barrier film 8 is laid inside the countersunk hole 314 of the cover 31 to form a complete liner layer. Then, the magnetic beads 4 are placed into the countersunk hole 314 one by one. Next, the sealing member 323 of the end cap 32 is aligned with the inner groove 313 of the cover 31, while ensuring that the position of the sealing plug 5 corresponds to the countersunk hole 314. When the end cap 32 and the cover 31 are pressed together, the sealing member 323 is pressed into the inner groove 313. Under the action of the sealing member 323, the gap between the cover 31 and the end cap 32 can be sealed. During this process, the annular protrusion 51 on the outside of the sealing plug 5 enters the port of the countersunk hole 314, and its outer surface forms an interference fit with the inner wall of the port of the countersunk hole 314, which improves the stability of the rear cover 3 after assembly. As the mold closing continues, the end face of the sealing plug 5 contacts the end face of the magnetic bead 4 and applies continuous pressure to stably press the magnetic bead 4 into the countersunk hole 314. At the same time, the plug plate 322 is inserted into the plug hole 312 to form a cross combination to limit the relative displacement between the end cap 32 and the cover body 31. Align the assembled back cover 3 with the installation position between the two socket plates 11. At this time, the dovetail block structure composed of the first insertion part 311 and the second insertion part 321 is aligned with the dovetail groove 111. When the back cover 3 is pushed into the rubber core body 1, the dovetail block slides into the dovetail groove 111 to form a wedge fit. At the same time, the inclined part at the bottom of the end cover 32 contacts the stop part 12 on the rubber core body 1. The inclined part slides along the inclined surface of the stop part 12 to push the entire back cover 3 upward, thereby pressing the insertion plate 322 tightly against the inner wall of the insertion groove 112 to form a stable pressing state and ensure the stability of the combination of the rubber core body 1 and the back cover 3. During the pushing process of the back cover 3, the tail of the connecting terminal 2 passes through the middle hole of the magnetic bead 4. When the connecting terminal 2 passes through the magnetic bead 4, the magnetic bead 4 covers the connecting terminal 2, thereby suppressing interference during signal transmission. During this process, the sealing ring 6 forms a continuous sealing ring on the outer periphery of the connecting terminal 2, which can prevent liquid from entering the connector interior along the surface of the connecting terminal 2. After the end cap 32 is combined with the cover body 31, the heat-absorbing fins 71 extend into the gap of the countersunk hole 314 to absorb the heat generated by the magnetic bead 4 and the connecting terminal 2. The absorbed heat is conducted to the heat dissipation fins 72 on the outside of the end cap 32, and heat exchange is carried out through the heat dissipation fins 72 in contact with the outside air to ensure stable signal transmission of the connector.

[0025] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An electromagnetic interference resistant automotive connector, comprising a core body (1), wherein a plurality of connecting terminals (2) are inserted into the core body (1), and socket plates (11) are symmetrically arranged on the outside of the core body (1), characterized in that, A rear cover (3) is inserted between the socket plates (11), and one end of the rear cover (3) with the connecting terminal (2) protrudes from its interior after installation; The rear cover (3) includes a cover body (31) and an end cover (32). The cover body (31) has a countersunk hole (314) inside. A magnetic bead (4) is provided inside the countersunk hole (314), and the magnetic bead (4) is sleeved on the outside of the connecting terminal (2). A sealing plug (5) is provided on one side of the end cover (32). When the cover body (31) and the end cover (32) are molded together, the sealing plug (5) is in contact with the end face of the magnetic bead (4).

2. The automotive connector with electromagnetic interference resistance according to claim 1, characterized in that, The cover (31) is symmetrically provided with a first plug-in part (311) on both sides, and the first plug-in part (311) has a plug hole (312) inside. The end cap (32) is symmetrically provided with a second plug-in part (321) on the outside. A plug plate (322) is fixedly connected to one side of the second plug-in part (321). When the cover (31) and the end cap (32) are molded together, the plug plate (322) is inserted into the plug hole (312).

3. The automotive connector with electromagnetic interference resistance according to claim 2, characterized in that, The cover (31) has an inset groove (313) inside, and the end cap (32) has a sealing element (323) on one side, which is inserted into the inset groove (313).

4. The automotive connector with electromagnetic interference resistance according to claim 3, characterized in that, The socket plate (11) has a dovetail groove (111) inside. The first insertion part (311) and the second insertion part (321) are both trapezoidal structures. When the cover (31) and the end cover (32) are molded together, the first insertion part (311) and the insertion hole (312) are combined to form a dovetail block that is compatible with the dovetail groove (111).

5. The automotive connector with electromagnetic interference resistance according to claim 4, characterized in that, The socket plate (11) has an insertion groove (112) inside. When the back cover (3) is combined with the core body (1), the insertion plate (322) is inserted into the insertion groove (112).

6. The automotive connector with electromagnetic interference resistance according to claim 1, characterized in that, The top of the core body (1) is provided with a stop (12), and the bottom of the end cap (32) is provided with a beveled part that matches the stop (12).

7. The automotive connector with electromagnetic interference resistance according to claim 1, characterized in that, The sealing plug (5) has an annular protrusion (51) on its outer side. When the sealing plug (5) squeezes the magnetic bead (4), the annular protrusion (51) fits against the inner wall of the countersunk hole (314).

8. The automotive connector with electromagnetic interference resistance according to claim 1, characterized in that, Both the cover (31) and the end cap (32) are provided with sealing rings (6). When the connecting terminal (2) is inserted, the sealing ring (6) is deformed by pressure and sticks tightly to the outer wall of the connecting terminal (2).

9. The automotive connector with electromagnetic interference resistance according to claim 1, characterized in that, The end cap (32) is provided with a plurality of heat dissipation components (7), which are composed of heat-absorbing wings (71) and heat dissipation fins (72). The heat-absorbing wings (71) extend into the recess (314), and the heat dissipation fins (72) are located outside the end cap (32).

10. The electromagnetic interference resistant automotive connector according to claim 1, characterized in that, A barrier membrane (8) is provided on the inner wall of the countersunk hole (314), and the barrier membrane (8) is made of silicone rubber.

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