High temperature resistant flame retardant automotive connector housing

Abstract

The utility model discloses a kind of high-temperature-resistant flame-retardant automobile connector shell, including first inner shell and second inner shell, the first inner shell and second inner shell are all adopted split design, the installation of connector core body is convenient, the first inner shell and second inner shell are all made of heat-absorbing material processing, first shell is sleeved on the first inner shell outer side, second shell is sleeved on the second inner shell outer side, gap is equipped between the first inner shell and first shell and second inner shell and second shell, the first shell and second shell side are evenly provided with a plurality of heat dissipation parts, a plurality of heat dissipation holes are equipped on the heat dissipation part, high-temperature-resistant insulating layer is equipped on the first inner shell and second inner shell inner wall.The utility model is passed through setting heat insulation layer, heat insulation layer uses aerogel material, can effectively prevent external heat to pass to the shell main part inside;By setting flame-retardant layer and special flame retardant, can play flame-retardant effect when meeting flame.

Description

Technical Field

[0001] This utility model relates to the field of automotive connector technology, specifically a high-temperature resistant and flame-retardant automotive connector housing. Background Technology

[0002] In automotive electrical systems, connectors play a crucial role, serving as key components for circuit connections. The connector housing, as a vital protector of internal conductive components, directly impacts the stability and safety of the automotive electrical system. With the continuous development of the automotive industry and the increasing level of automotive electronics, the application scenarios for connectors are becoming more complex. In high-temperature environments such as engine compartments, connectors need to withstand high temperatures for extended periods. Ordinary automotive connector housings are prone to material aging and deformation under high temperatures, leading to a decrease in mechanical strength, affecting normal connection, and potentially causing short circuits. Simultaneously, vehicles face various potential fire risks during operation, such as electrical overload and short circuits. If the flame-retardant properties of the connector housing are poor, it can easily ignite in the event of a fire, not only exacerbating the spread of the fire but also potentially damaging internal conductive components, further amplifying the hazard. Therefore, high-temperature resistant connectors have emerged on the market.

[0003] For example, utility model patent CN213991248U discloses a high-temperature resistant housing for a communication connector, including a fixed housing and a connector body. The fixed housing has a positioning groove inside, with a connecting rod at the lower end of the groove. The upper surface of the fixed housing has a positioning thread, and the interior of the fixed housing has an asbestos fiber layer. The connector body is located inside the fixed housing, and a connecting wire is connected to its outer side. The positioning groove and connecting rod work together to connect the fixed housing to the second fixed housing, preventing loosening during use and allowing rainwater to enter the fixed housing and corrode the connector body inside. The positioning thread and sealing sleeve further seal the fixed housing, increasing the sealing effect of the device. The asbestos fiber layer and glass fiber layer provide excellent high-temperature resistance.

[0004] The high-temperature resistant shell provided by the aforementioned patent improves the shell's high-temperature resistance by using asbestos fibers and glass fibers. However, this existing structure prevents the heat generated inside the connector from dissipating quickly, and the inability to dissipate heat in high-temperature environments further accelerates the aging and damage of the shell material, affecting the connector's service life. Utility Model Content

[0005] The purpose of this utility model is to provide a high-temperature resistant and flame-retardant automotive connector housing, which aims to improve the problem that existing high-temperature housings cause the heat generated inside the connector to not dissipate quickly, and the heat generated in high-temperature environments cannot be dissipated in time, which will further aggravate the aging and damage of the housing material, and thus affect the service life of the connector.

[0006] This utility model is implemented as follows:

[0007] A high-temperature resistant and flame-retardant automotive connector housing includes a first inner shell and a second inner shell. Both the first and second inner shells are designed separately to facilitate the installation of the connector core. Both the first and second inner shells are made of heat-absorbing material. A first outer shell is fitted onto the outer side of the first inner shell, and a second outer shell is fitted onto the outer side of the second inner shell. Gaps are provided between the first and second inner shells and between the second inner shell and the second outer shell. Multiple heat dissipation sections are evenly provided on the sides of the first and second outer shells, and multiple heat dissipation holes are provided on the heat dissipation sections. A high-temperature resistant insulating layer is provided on the inner walls of the first and second inner shells.

[0008] Preferably, both the first inner shell and the second inner shell have an adapter post at one end facing outwards, and the adapter post has a sleeve in the middle. The sleeve communicates with the inner cavity of the first inner shell or the second inner shell, and the sleeve is a thermoplastic tube.

[0009] Preferably, the second inner shell is provided with a connector at one end facing the first inner shell. The connector is used to connect the first inner shell and the second inner shell, which facilitates the connection of the two parts of the connector.

[0010] Preferably, the high-temperature resistant insulation layer is made of polyimide film, and the inner wall of the high-temperature resistant insulation layer is provided with anti-slip texture.

[0011] Preferably, the first and second outer shells are provided with connecting pipes at the positions aligned with the adapter post, the connecting pipes are threaded to the adapter post, and the ends of the first and second outer shells that are close to each other are both open.

[0012] Preferably, it also includes an adapter cap, wherein a limiting ring is provided on the side of the first housing along the opening end, and a plurality of limiting protrusions are provided on the side of the first housing near the limiting ring; the adapter cap is installed between the limiting ring and the limiting protrusions, and the adapter cap is rotatably connected to the first housing.

[0013] Preferably, the second outer shell has a connecting portion at one end near the first outer shell, and the connecting portion is threadedly connected to the adapter cap.

[0014] Preferably, the inner side of the adapter cap is provided with an internal thread, one end of the inner side of the adapter cap with the internal thread is close to the second outer shell, and the inner side of the adapter cap away from the end with the internal thread is provided with a convex ring, which is used to mutually limit the movement with the limiting ring.

[0015] Preferably, the inner wall surfaces of the first and second outer shells are provided with heat insulation layers, and the outer surfaces of the first and second outer shells are provided with flame retardant layers, with an anti-oxidation layer provided on the outer side of the flame retardant layer.

[0016] Preferably, the heat insulation layer is made of aerogel material, and the heat insulation layer is fixedly connected to the inner walls of the first shell and the second shell by an adhesive; the flame retardant layer is a composite coating applied to the outer walls of the first shell and the second shell, and the raw materials of the flame retardant layer include aluminum hydroxide, magnesium hydroxide and silicone flame retardant, and the mass ratio of aluminum hydroxide to magnesium hydroxide is (3-5):1; the anti-oxidation layer is a nano-silica coating, and the anti-oxidation layer is located on the outside of the flame retardant layer.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model improves the high-temperature resistance of the outer shell by setting a heat insulation layer made of aerogel material, which effectively prevents external heat from being transferred to the interior of the outer shell. By setting a flame-retardant layer and a special flame retardant, it can quickly play a flame-retardant role when exposed to flame, reducing the risk of fire. By setting heat dissipation holes, it can dissipate the heat inside the outer shell in a timely manner, preventing heat accumulation. Furthermore, the first and second inner shells can provide good protection for the connector core. The first and second inner shells are made of heat-absorbing materials, and the first and second inner shells, together with the heat dissipation holes, can efficiently dissipate the heat inside the connector.

[0019] 2. This utility model separates the first inner shell and the second inner shell, which facilitates the installation of the connector core; and the first inner shell and the second inner shell are provided with a high temperature resistant insulation layer, which improves the insulation performance of the connector and ensures the connection reliability and safety of the connector.

[0020] 3. This utility model uses an adapter cap to connect the first and second outer shells together, thereby ensuring the stability of the entire shell and facilitating the formation of the entire shell as a whole. It also ensures that the connector can be connected stably. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first inner shell of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the second inner shell of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first outer shell of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the second outer shell of this utility model;

[0026] Figure 6 This is a structural schematic diagram of the adapter cap of this utility model;

[0027] Figure 7 This is a cross-sectional layered view of the first outer shell of this utility model;

[0028] Figure 8 This is a cross-sectional layered view of the first inner shell of this utility model.

[0029] In the diagram: 1. First inner shell; 11. Adapter post; 12. Sleeve; 13. High-temperature resistant insulation layer; 2. Second inner shell; 21. Connector; 3. First outer shell; 31. Connecting pipe; 32. Heat dissipation part; 33. Limiting protrusion; 34. Limiting ring; 35. Flame retardant layer; 36. Heat insulation layer; 37. Antioxidant layer; 4. Second outer shell; 41. Connecting part; 5. Adapter cap; 51. Protruding ring; 52. Internal thread. Detailed Implementation

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0032] Example 1

[0033] like Figure 1 , Figure 4 and Figure 5As shown, a high-temperature resistant and flame-retardant automotive connector housing includes a first inner shell 1 and a second inner shell 2. Both the first inner shell 1 and the second inner shell 2 are of a split design. This structure facilitates the opening of the first inner shell 1 and the second inner shell 2, allowing for easy placement of the connector core inside, thus facilitating the installation of the connector core. The split first inner shell 1 and the second inner shell 2 are snap-fitted together for convenient use and assembly. Both the first inner shell 1 and the second inner shell 2 are made of heat-absorbing materials, such as alumina or graphene-modified plastic. This facilitates the absorption and dissipation of heat generated by the connector core. A first outer shell 3 is fitted onto the outer side of the first inner shell 1, and a second outer shell 4 is fitted onto the outer side of the second inner shell 2. Gaps are provided between the first inner shell 1 and the first outer shell 3, and between the second inner shell 2 and the second outer shell 4. Multiple heat dissipation sections 32 are evenly distributed on the sides of the first outer shell 3 and the second outer shell 4. Multiple heat dissipation holes are provided on the heat dissipation sections 32. The gaps between the heat dissipation sections 32 and the heat dissipation holes allow heat generated by the first inner shell 1 and the second inner shell 2 to flow through the gaps and dissipate through the heat dissipation holes of the heat dissipation sections 32. A high-temperature resistant insulating layer 13 is provided on the inner walls of the first inner shell 1 and the second inner shell 2. This ensures insulation between the inner walls of the first inner shell 1 and the second inner shell 2, preventing electrical conduction between the connector core and the first inner shell 1 and the second inner shell 2, which could cause connector failure.

[0034] like Figure 2 and Figure 3 As shown, both the first inner shell 1 and the second inner shell 2 have an adapter post 11 at their outer ends. The adapter post 11 facilitates connection between the first inner shell 1 and the second inner shell 2 and the first outer shell 3 and the second outer shell 4. A sleeve 12 is provided in the middle of the adapter post 11. The sleeve 12 communicates with the inner cavity of the first inner shell 1 or the second inner shell 2. The sleeve 12 is a thermoplastic tube. This structure facilitates the sleeve 12 being fitted onto the wire, and then the thermoplastic tube is heated and shrinks. A connector 21 is provided at the end of the second inner shell 2 facing the first inner shell 1. The connector 21 is used for plugging and connecting the first inner shell 1 and the second inner shell 2, facilitating the connection of the two parts of the connector. The high-temperature resistant insulation layer 13 is made of polyimide film. The inner wall of the high-temperature resistant insulation layer 13 is provided with anti-slip texture. Polyimide material has excellent high-temperature resistance and insulation properties, enabling it to work stably for a long time in high-temperature environments, protecting the safety of internal conductive components.

[0035] like Figure 4 and Figure 5 As shown, the first outer shell 3 and the second outer shell 4 are provided with connecting pipes 31 at the positions aligned with the adapter post 11. The connecting pipes 31 are threadedly connected to the adapter post 11, facilitating the connection of the first outer shell 3 and the second outer shell 4 with the first inner shell 1 and the second inner shell 2. Furthermore, both the first outer shell 3 and the second outer shell 4 have open ends at their closest points to each other, facilitating the connection between the first outer shell 3 and the second outer shell 4.

[0036] Example 2

[0037] like Figure 1 , Figure 4 and Figure 5 As shown, a high-temperature resistant and flame-retardant automotive connector housing includes a first inner shell 1 and a second inner shell 2. Both the first inner shell 1 and the second inner shell 2 are of a split design. This structure facilitates the opening of the first inner shell 1 and the second inner shell 2, allowing for easy placement of the connector core inside, thus facilitating the installation of the connector core. The split first inner shell 1 and the second inner shell 2 are snap-fitted together for easy assembly and use. Both the first inner shell 1 and the second inner shell 2 are made of heat-absorbing materials, such as alumina or graphene-modified plastic. This facilitates the absorption and dissipation of heat generated by the connector core. A first outer shell 3 is fitted onto the outer side of the first inner shell 1, and a second outer shell 4 is fitted onto the outer side of the second inner shell 2. Gaps are provided between the first inner shell 1 and the first outer shell 3, and between the second inner shell 2 and the second outer shell 4. Multiple heat dissipation sections 32 are evenly distributed on the sides of the first outer shell 3 and the second outer shell 4. Multiple heat dissipation holes are provided on the heat dissipation sections 32. The gaps between the heat dissipation sections 32 and the heat dissipation holes allow heat generated by the first inner shell 1 and the second inner shell 2 to flow through the gaps and dissipate through the heat dissipation holes of the heat dissipation sections 32. A high-temperature resistant insulating layer 13 is provided on the inner walls of the first inner shell 1 and the second inner shell 2. This ensures insulation between the inner walls of the first inner shell 1 and the second inner shell 2, preventing electrical conduction between the connector core and the first inner shell 1 and the second inner shell 2, which could cause connector failure.

[0038] like Figure 2 and Figure 3 As shown, both the first inner shell 1 and the second inner shell 2 have an adapter post 11 at their outer ends. The adapter post 11 facilitates connection between the first inner shell 1 and the second inner shell 2 and the first outer shell 3 and the second outer shell 4. A sleeve 12 is provided in the middle of the adapter post 11. The sleeve 12 communicates with the inner cavity of the first inner shell 1 or the second inner shell 2. The sleeve 12 is a thermoplastic tube. This structure facilitates the sleeve 12 being fitted onto the wire, and then the thermoplastic tube is heated and shrinks. A connector 21 is provided at the end of the second inner shell 2 facing the first inner shell 1. The connector 21 is used for plugging and connecting the first inner shell 1 and the second inner shell 2, facilitating the connection of the two parts of the connector. The high-temperature resistant insulation layer 13 is made of polyimide film. The inner wall of the high-temperature resistant insulation layer 13 is provided with anti-slip texture. Polyimide material has excellent high-temperature resistance and insulation properties, enabling it to work stably for a long time in high-temperature environments, protecting the safety of internal conductive components.

[0039] like Figure 4 and Figure 5As shown, the first outer shell 3 and the second outer shell 4 are provided with connecting pipes 31 at the positions aligned with the adapter post 11. The connecting pipes 31 are threadedly connected to the adapter post 11, facilitating the connection of the first outer shell 3 and the second outer shell 4 with the first inner shell 1 and the second inner shell 2. Furthermore, both the first outer shell 3 and the second outer shell 4 have open ends at their closest points to each other, facilitating the connection between the first outer shell 3 and the second outer shell 4.

[0040] like Figure 4 As shown, it also includes an adapter cap 5. A limiting ring 34 is provided on the side of the first housing 3 along the opening end. A plurality of limiting protrusions 33 are provided on the side of the first housing 3 near the limiting ring 34. The adapter cap 5 is installed between the limiting ring 34 and the limiting protrusions 33. This structure can effectively prevent the adapter cap 5 from detaching from the first housing 3. The adapter cap 5 is rotatably connected to the first housing 3, which facilitates the rotation of the adapter cap 5 and makes it easy to use the adapter cap 5.

[0041] like Figure 5 As shown, the second outer shell 4 has a connecting part 41 at one end near the first outer shell 3. The connecting part 41 is threadedly connected to the adapter cap 5, which facilitates a stable connection between the first outer shell 3 and the second outer shell 4.

[0042] like Figure 6 As shown, the inner side of the adapter cap 5 is provided with an internal thread 52. One end of the inner side of the adapter cap 5 with the internal thread 52 is close to the second outer shell 4, and the inner side of the adapter cap 5 away from the end with the internal thread 52 is provided with a protruding ring 51. The protruding ring 51 is used to mutually limit the movement with the limiting ring 34.

[0043] Example 3

[0044] like Figure 1 , Figure 4 and Figure 5As shown, a high-temperature resistant and flame-retardant automotive connector housing includes a first inner shell 1 and a second inner shell 2. Both the first inner shell 1 and the second inner shell 2 are of a split design. This structure facilitates the opening of the first inner shell 1 and the second inner shell 2, allowing for easy placement of the connector core inside, thus facilitating the installation of the connector core. The split first inner shell 1 and the second inner shell 2 are snap-fitted together for easy assembly and use. Both the first inner shell 1 and the second inner shell 2 are made of heat-absorbing materials, such as alumina or graphene-modified plastic. This facilitates the absorption and dissipation of heat generated by the connector core. A first outer shell 3 is fitted onto the outer side of the first inner shell 1, and a second outer shell 4 is fitted onto the outer side of the second inner shell 2. Gaps are provided between the first inner shell 1 and the first outer shell 3, and between the second inner shell 2 and the second outer shell 4. Multiple heat dissipation sections 32 are evenly distributed on the sides of the first outer shell 3 and the second outer shell 4. Multiple heat dissipation holes are provided on the heat dissipation sections 32. The gaps between the heat dissipation sections 32 and the heat dissipation holes allow heat generated by the first inner shell 1 and the second inner shell 2 to flow through the gaps and dissipate through the heat dissipation holes of the heat dissipation sections 32. A high-temperature resistant insulating layer 13 is provided on the inner walls of the first inner shell 1 and the second inner shell 2. This ensures insulation between the inner walls of the first inner shell 1 and the second inner shell 2, preventing electrical conduction between the connector core and the first inner shell 1 and the second inner shell 2, which could cause connector failure.

[0045] like Figure 2 and Figure 3 As shown, both the first inner shell 1 and the second inner shell 2 have an adapter post 11 at their outer ends. The adapter post 11 facilitates connection between the first inner shell 1 and the second inner shell 2 and the first outer shell 3 and the second outer shell 4. A sleeve 12 is provided in the middle of the adapter post 11. The sleeve 12 communicates with the inner cavity of the first inner shell 1 or the second inner shell 2. The sleeve 12 is a thermoplastic tube. This structure facilitates the sleeve 12 being fitted onto the wire, and then the thermoplastic tube is heated and shrinks. A connector 21 is provided at the end of the second inner shell 2 facing the first inner shell 1. The connector 21 is used for plugging and connecting the first inner shell 1 and the second inner shell 2, facilitating the connection of the two parts of the connector. The high-temperature resistant insulation layer 13 is made of polyimide film. The inner wall of the high-temperature resistant insulation layer 13 is provided with anti-slip texture. Polyimide material has excellent high-temperature resistance and insulation properties, enabling it to work stably for a long time in high-temperature environments, protecting the safety of internal conductive components.

[0046] like Figure 4 and Figure 5 As shown, the first outer shell 3 and the second outer shell 4 are provided with connecting pipes 31 at the positions aligned with the adapter post 11. The connecting pipes 31 are threadedly connected to the adapter post 11, facilitating the connection of the first outer shell 3 and the second outer shell 4 with the first inner shell 1 and the second inner shell 2. Furthermore, both the first outer shell 3 and the second outer shell 4 have open ends at their closest points to each other, facilitating the connection between the first outer shell 3 and the second outer shell 4.

[0047] like Figure 4 As shown, it also includes an adapter cap 5. A limiting ring 34 is provided on the side of the first housing 3 along the opening end. A plurality of limiting protrusions 33 are provided on the side of the first housing 3 near the limiting ring 34. The adapter cap 5 is installed between the limiting ring 34 and the limiting protrusions 33. This structure can effectively prevent the adapter cap 5 from detaching from the first housing 3. The adapter cap 5 is rotatably connected to the first housing 3, which facilitates the rotation of the adapter cap 5 and makes it easy to use the adapter cap 5.

[0048] like Figure 5 As shown, the second outer shell 4 has a connecting part 41 at one end near the first outer shell 3. The connecting part 41 is threadedly connected to the adapter cap 5, which facilitates a stable connection between the first outer shell 3 and the second outer shell 4.

[0049] like Figure 6 As shown, the inner side of the adapter cap 5 is provided with an internal thread 52. One end of the inner side of the adapter cap 5 with the internal thread 52 is close to the second outer shell 4, and the inner side of the adapter cap 5 away from the end with the internal thread 52 is provided with a protruding ring 51. The protruding ring 51 is used to mutually limit the movement with the limiting ring 34.

[0050] like Figure 7 As shown, a heat insulation layer 36 is provided on the inner wall surface of the first outer shell 3 and the second outer shell 4, and a flame retardant layer 35 is provided on the outer surface of the first outer shell 3 and the second outer shell 4. An anti-oxidation layer 37 is provided on the outer side of the flame retardant layer 35. The heat insulation layer 36 is made of aerogel material and is fixedly connected to the inner wall of the first outer shell 3 and the second outer shell 4 by an adhesive; the flame retardant layer 35 is a composite coating applied to the outer wall of the first outer shell 3 and the second outer shell 4. The raw materials of the flame retardant layer 35 include aluminum hydroxide, magnesium hydroxide and silicone flame retardant, and the mass ratio of aluminum hydroxide to magnesium hydroxide is (3-5):1; the anti-oxidation layer 37 is a nano-silica coating, located on the outside of the flame retardant layer 35, and the thickness of the anti-oxidation layer 37 is 5-10 μm.

[0051] Working Principle: When using this high-temperature resistant and flame-retardant automotive connector housing, the connector core is first installed inside the first inner shell 1 and the second inner shell 2. Then, the first outer shell 3 and the second outer shell 4 are respectively fitted onto the outside of the first inner shell 1 and the second inner shell 2, ensuring a stable connection between the first outer shell 3 and the first inner shell 1, and a stable connection between the second outer shell 4 and the second inner shell 2. In high-temperature environments, the heat insulation layer 36 effectively prevents external heat from transferring to the interior. Simultaneously, the heat dissipation holes, in conjunction with the first inner shell 1 and the second inner shell 2, dissipate the heat generated internally to the external environment in a timely manner, ensuring that the internal temperature of the first inner shell 1 and the second inner shell 2 remains within a reasonable range. When exposed to flame, the flame retardant in the flame-retardant layer 35 decomposes rapidly, providing flame retardancy and reducing the risk of fire. The high-temperature resistant insulation layer 13 protects the internal conductive components, ensuring safe operation of the connector in high-temperature environments and guaranteeing normal connection and use.

[0052] In summary, compared with the prior art, this application improves the high-temperature resistance of the outer shell by setting a heat insulation layer 36, which is made of aerogel material, to effectively prevent external heat from being transferred to the interior of the outer shell. By setting a flame-retardant layer 35 and a special flame retardant, it can quickly play a flame-retardant role when exposed to flames, reducing the risk of fire. By setting heat dissipation holes, it can dissipate the heat inside the outer shell in a timely manner, avoiding heat accumulation. Furthermore, the first inner shell 1 and the second inner shell 2 can provide good protection for the connector core. The first inner shell 1 and the second inner shell 2 are made of heat-absorbing material, and the first inner shell 1 and the second inner shell 2, together with the heat dissipation holes, can efficiently dissipate the heat inside the connector.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-temperature resistant and flame-retardant automotive connector housing, comprising a first inner shell (1) and a second inner shell (2), characterized in that, The first inner shell (1) and the second inner shell (2) are both designed separately to facilitate the installation of the connector core. The first inner shell (1) and the second inner shell (2) are both made of heat-absorbing material. The first inner shell (1) is fitted with a first outer shell (3) on its outer side, and the second inner shell (2) is fitted with a second outer shell (4) on its outer side. There is a gap between the first inner shell (1) and the first outer shell (3) and between the second inner shell (2) and the second outer shell (4). The first outer shell (3) and the second outer shell (4) are evenly provided with multiple heat dissipation parts (32) on their sides. The heat dissipation parts (32) are provided with multiple heat dissipation holes. The inner walls of the first inner shell (1) and the second inner shell (2) are provided with a high-temperature resistant insulating layer (13).

2. The high-temperature resistant and flame-retardant automotive connector housing according to claim 1, characterized in that, The first inner shell (1) and the second inner shell (2) are each provided with a transition post (11) at one end facing outward. The transition post (11) is provided with a sleeve (12) in the middle. The sleeve (12) communicates with the inner cavity of the first inner shell (1) or the second inner shell (2). The sleeve (12) is a thermoplastic tube.

3. The high-temperature resistant and flame-retardant automotive connector housing according to claim 2, characterized in that, The second inner shell (2) is provided with a connector (21) at one end facing the first inner shell (1). The connector (21) is used to connect the first inner shell (1) and the second inner shell (2) to facilitate the connection of the two parts of the connector.

4. The high-temperature resistant and flame-retardant automotive connector housing according to claim 2, characterized in that, The high-temperature resistant insulation layer (13) is made of polyimide film, and the inner wall of the high-temperature resistant insulation layer (13) is provided with anti-slip texture.

5. The high-temperature resistant and flame-retardant automotive connector housing according to claim 1, characterized in that, The first outer shell (3) and the second outer shell (4) are provided with a connecting pipe (31) at the position of the adapter post (11). The connecting pipe (31) is threadedly connected to the adapter post (11), and the first outer shell (3) and the second outer shell (4) are both open at one end close to each other.

6. A high-temperature resistant and flame-retardant automotive connector housing according to any one of claims 1-5, characterized in that, It also includes an adapter cap (5), a limiting ring (34) is provided on the side of the first housing (3) along the opening end, and multiple limiting protrusions (33) are provided on the side of the first housing (3) near the limiting ring (34); the adapter cap (5) is installed between the limiting ring (34) and the limiting protrusions (33), and the adapter cap (5) is rotatably connected to the first housing (3).

7. A high-temperature resistant and flame-retardant automotive connector housing according to claim 6, characterized in that, The second outer shell (4) has a connecting part (41) at one end near the first outer shell (3), and the connecting part (41) is threadedly connected to the adapter cap (5).

8. The high-temperature resistant and flame-retardant automotive connector housing according to claim 7, characterized in that, The inner side of the adapter cap (5) is provided with an internal thread (52). One end of the inner side of the adapter cap (5) with the internal thread (52) is close to the second outer shell (4). The inner side of the adapter cap (5) away from the end with the internal thread (52) is provided with a convex ring (51). The convex ring (51) is used to mutually limit the movement of the limiting ring (34).

9. A high-temperature resistant and flame-retardant automotive connector housing according to any one of claims 1-5, characterized in that, The inner wall surfaces of the first outer shell (3) and the second outer shell (4) are provided with a heat insulation layer (36), and the outer surfaces of the first outer shell (3) and the second outer shell (4) are provided with a flame retardant layer (35), and the outer side of the flame retardant layer (35) is provided with an anti-oxidation layer (37).

10. A high-temperature resistant and flame-retardant automotive connector housing according to claim 9, characterized in that, The heat insulation layer (36) is made of aerogel material and is fixedly connected to the inner wall of the first shell (3) and the second shell (4) by an adhesive; the flame retardant layer (35) is a composite coating coated on the outer wall of the first shell (3) and the second shell (4); the antioxidant layer (37) is a nano-silica coating and is located on the outside of the flame retardant layer (35).

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