High-voltage connector for automobile gearbox

Abstract

The utility model relates to a high-voltage connector for an automobile gearbox, which is used for circuit connection of a new energy automobile gearbox, and the gearbox comprises a box body and a high-voltage connector covering an opening of the box body, the high-voltage connector comprises an aluminum alloy shell, a copper bar plastic-coated support, a support sealing element, a copper bar group and at least one flange sealing element, the copper bar plastic-coated support comprises a support part and a flange part, the flange part is radially arranged on the support part in a protruding mode, at least one sealing groove is formed in the face, facing the box body, of the flange part, and the flange sealing element is arranged in the sealing groove. The at least one flange sealing piece is arranged in the at least one sealing groove, the aluminum alloy shell comprises a shell support part and a shell flange part, the shell flange part is provided with a plurality of connecting through holes, and the aluminum alloy shell is connected with the box body through a screw rod to limit and fix the copper bar plastic-coated support. The structure of the product is optimized, so that the product can adapt to a small gearbox shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high pressure connector, concretely relates to a high pressure connector applied to a new energy automobile gearbox circuit connection system. BACKGROUND

[0002] With the development of science and technology, the progress of technology, the automobile product is changing day by day, also put forward higher requirements to circuit connecting piece product, and the automobile parts is the important field of our country automobile industry participation globalization.In new energy hybrid car, the high pressure connector installed in the gearbox of the vehicle body plays a very important role, in the high voltage high current environment, the sealing performance is good, reliable distribution and conduction become the core and key of new energy automobile safety.

[0003] The working principle of the existing high pressure connector is that the high pressure connector is installed in the gearbox of the new energy automobile, and current interaction is carried out through the two end terminals and copper bars to realize signal control, temperature detection and other functions.

[0004] The existing high pressure connector has the following defects in actual use:

[0005] (1) no electromagnetic shielding device, electromagnetic interference in the current interaction process is difficult to solve;

[0006] (2) the cost of electromagnetic shielding device is too high, and the shielding effect is poor;

[0007] (3) the size of the shielding device is too large, and it is difficult to adapt to assembly.

[0008] Therefore, the existing high pressure connector still has room for improvement. UTILITY MODEL CONTENT

[0009] The utility model aims at providing a high pressure connector applied to a new energy automobile gearbox circuit connection system, which has reliable structure and solves the technical problems.

[0010] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0011] The utility model provides a kind of high pressure connector for automobile gearbox, for the circuit connection of new energy automobile gearbox, the gearbox includes a box and the high pressure connector covering the opening of the box, the high pressure connector includes an aluminum alloy shell, a copper bar plastic bracket, a bracket seal, a copper bar group and at least one flange seal, the copper bar plastic bracket is arranged in the aluminum alloy shell, the bracket seal is arranged on the copper bar plastic bracket for sealing the gap between the copper bar plastic bracket and the aluminum alloy shell, the copper bar group is arranged in the copper bar plastic bracket, wherein the copper bar plastic bracket includes bracket part and flange part, the flange part is radially protruding on the bracket part, at least one sealing groove is opened on the surface of the box towards the flange part, the at least one flange seal is arranged in the at least one sealing groove, the aluminum alloy shell includes shell bracket part and shell flange part, the shell flange part is provided with a plurality of connecting through holes, and the aluminum alloy shell is fixed by screw rod connection the box to limit the copper bar plastic bracket.

[0012] The high pressure connector for automobile gearbox described in the preferred embodiment of the present application further includes a finger spring, the shell bracket part is provided with an annular shielding groove, the finger spring is arranged in the annular shielding groove, and the annular body of the finger spring protrudes from the annular shielding groove, so as to shield.

[0013] The high pressure connector for automobile gearbox described in the preferred embodiment of the present application further includes a shell sealing ring, and the shell bracket part is further provided with a waterproof groove, and the shell sealing ring is arranged in the waterproof groove.

[0014] The high pressure connector for automobile gearbox described in the preferred embodiment of the present application further includes fixing glue, and the fixing glue is arranged in the annular shielding groove.

[0015] The design concept of the present application is that the high pressure connector ensures the stability and safety of power transmission by connecting two terminals, and the high pressure connector needs to have high plugging frequency, heat resistance and current carrying capacity to adapt to the environment of high voltage and large current.

[0016] Due to the above technical scheme, the utility model has the following advantages and effects:

[0017] Firstly, the structure of the product is optimized, so that it can adapt to a smaller gearbox shell;

[0018] Secondly, the present application can shield electromagnetic interference in the current interaction process at a lower cost;

[0019] Third, the specific method is used for fixing the contact finger spring, and spring displacement during movement can be significantly reduced.

[0020] Of course, implementing any one of the specific embodiments of the present application does not necessarily have all the above technical effects at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance of the high-voltage connector of the present application;

[0022] Figure 2 It is a schematic diagram of the copper bar plastic support of the present application;

[0023] Figure 3 It is a schematic diagram of the aluminum alloy shell, contact finger spring and shell sealing ring of the present application;

[0024] Figure 4 It is a schematic diagram of the aluminum alloy shell of the present application. DETAILED DESCRIPTION

[0025] For the sake of understanding, the preferred embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0026] Please refer to Figure 1 , Figure 2 and Figure 3 , the schematic diagram of the appearance of the high-voltage connector of the present application, the high-voltage connector for the gearbox of the present application is used for the circuit connection of the gearbox of the new energy automobile, the high-voltage connector of the present application belongs to a shielded high-voltage connector, and the structure is relatively simple; the high-voltage connector ensures the stability and safety of power transmission through the connection of two terminals, has high plugging times, heat resistance and current carrying capacity, and is suitable for assembly at the lowest possible cost, and improves the electromagnetic shielding effect; the gearbox described in the present application comprises a box body (not shown in the figure) and a high-voltage connector covering the opening of the box body, and the high-voltage connector is connected to the controller, wherein the high-voltage connector comprises an aluminum alloy shell 2, a copper bar plastic support 3, a support sealing element 4, a copper bar group 5 and at least one flange sealing element 6, the copper bar plastic support 3 is arranged in the aluminum alloy shell 2, as shown in Figure 1 , the aluminum alloy shell 2 is sleeved and connected to the surface of the middle section of the copper bar plastic support 3; the support sealing element 4 is arranged on the copper bar plastic support 3 for sealing the gap between the copper bar plastic support 3 and the aluminum alloy shell 2, as shown in Figure 2 , the support sealing element 4 is surrounded in the groove of the middle section of the copper bar plastic support 3 and protrudes from the groove, and after the aluminum alloy shell 2 is tightly sleeved on the copper bar plastic support 3, the sealing function is formed by abutting and connecting to prevent the oil in the box from leaking out; in addition, the copper bar group 5 is arranged in the copper bar plastic support 3, as shown in Figure 2As shown, the copper bar group 5 is injection molded in the copper bar plastic bracket 3.

[0027] Please refer to Figure 2 The copper bar plastic bracket 3 includes a bracket part 31 and a flange part 32, which are integrally formed by plastic injection. The flange part 32 is radially protruded on the bracket part 31. At least one sealing groove 321 is formed on the surface of the flange part 32, and at least one flange sealing member 6 is arranged in the sealing groove 321. In the embodiment, the number of the flange sealing member 6 and the sealing groove 321 is two. Figure 3 And Figure 4 The aluminum alloy shell 2 includes a shell bracket part 21 and a shell flange part 22. The shell flange part 22 is provided with a plurality of connecting through holes 221. The aluminum alloy shell 2 is fixed to the copper bar plastic bracket 3 by a screw rod connected to the box. The fixed mode is that the screw rod penetrates through the connecting through hole 221 and is locked with the box.

[0028] Please refer to Figure 3 And Figure 4The high-voltage connector further comprises a contact finger spring 7, which is a ring-shaped spring made of stainless steel or beryllium copper. However, the application is not limited to the above-mentioned materials. As long as the spring is flexible and resistant to oxidation, it should be within the protection scope of the application. The shell support part 21 is provided with a ring-shaped shielding groove 211, and the contact finger spring 7 is arranged in the ring-shaped shielding groove 211. The ring-shaped body of the contact finger spring 7 protrudes from the ring-shaped shielding groove 211. The contact finger spring 7 is used for shielding, that is, the diameter of each ring of the contact finger spring 7 is greater than the depth of the ring-shaped shielding groove 211. Therefore, when the contact finger spring 7 is arranged in the ring-shaped shielding groove 211, it protrudes from the surface of the ring-shaped shielding groove 211. The contact finger spring 7 is a tensile spring, which has the functions of tensile deformation and compression deformation. The contact finger spring 7 has a large compression rate and is compatible with the error of the hand tool. It can be used between the EMC planes of the flat gap and the side gap. The aluminum alloy shell 2 of the high-voltage connector is flatly mounted and connected with the transmission case. The high-voltage connector is inserted into the controller. The aluminum alloy shell 2 and the shell of the controller are connected through the contact finger spring 7, thereby forming an effective EMC shielding. During the process of inserting the high-voltage connector into the controller, the shell of the controller presses the contact finger spring 7 which protrudes from the ring-shaped shielding groove 211. The restoring force generated by the deformation of the contact finger spring 7 makes the shell of the controller and the contact finger spring 7 more closely connected, thereby realizing elastic connection. The contact finger spring 7 used in the application has good conductivity and good EMC shielding effect in the high-voltage connection terminal connector terminal. In addition, the recess is added to the aluminum alloy shell 2, without the need to open a new mold, thereby saving the development cycle and reducing the cost.

[0029] In addition, in the waterproof design aspect, Figure 3 and Figure 4 The high-voltage connector further comprises a shell sealing ring 8. The shell support part 21 is further provided with a waterproof groove 212, and the shell sealing ring 8 is arranged in the waterproof groove 212. The shell sealing ring 8 is a ring-shaped body. The surface of the shell sealing ring 8 connected with the shell of the controller comprises two protruding ribs. The protruding ribs can increase the waterproof strength. Since the waterproof groove 212 is located closer to the opening of the shell of the controller than the ring-shaped shielding groove 211, the waterproof groove 212 is used to prevent water or other impurities from entering the shell of the controller. In addition, in order to facilitate and stable connection, the high-voltage connector further comprises fixing glue. The fixing glue is arranged in the ring-shaped shielding groove 211, and the contact finger spring 7 is arranged in the ring-shaped shielding groove 211 and fixed by using the fixing glue, thereby preventing the contact finger spring 7 from being separated from the ring-shaped shielding groove 211 during use or storage, and ensuring the use quality.

[0030] Due to the adoption of the above technical scheme, the utility model has the following advantages and effects:

[0031] First, the product structure of the application is optimized, so that it can adapt to a smaller gearbox shell;

[0032] Second, the application can use lower cost to shield electromagnetic interference in the current interaction process;

[0033] Third, the application uses a specific method to fix the finger spring, which can significantly reduce the spring displacement during movement.

[0034] Of course, implementing any one of the specific embodiments of the utility model does not necessarily have all the above technical effects at the same time.

[0035] The above disclosure is only a preferred embodiment of the utility model, but not to limit itself, any skilled person in the art without departing from the spirit of the utility model, the equivalent changes and changes are made, which should fall within the scope of protection of the utility model.

Claims

1. A high-voltage connector for an automobile transmission, used for circuit connection of a new energy automobile transmission, the transmission comprising a box body and a high-voltage connector covering an opening of the box body, characterized in that, The high-voltage connector comprises an aluminum alloy shell, a copper bar plastic bracket, a bracket seal, a copper bar group and at least one flange seal, the copper bar plastic bracket is arranged in the aluminum alloy shell, the bracket seal is arranged on the copper bar plastic bracket for sealing the gap between the copper bar plastic bracket and the aluminum alloy shell, and the copper bar group is arranged in the copper bar plastic bracket, wherein The copper bar plastic bracket comprises a bracket part and a flange part, the flange part is arranged radially on the bracket part, at least one sealing groove is formed on the flange part towards the surface of the box, the at least one flange seal is arranged in the at least one sealing groove, the aluminum alloy shell comprises a shell bracket part and a shell flange part, a plurality of connecting through holes are formed in the shell flange part, and the aluminum alloy shell is connected with the box by a screw rod to limit and fix the copper bar plastic bracket.

2. The high voltage connector for an automobile transmission according to claim 1, wherein The high-voltage connector further comprises a contact finger spring, the shell bracket part is provided with an annular shielding groove, the contact finger spring is arranged in the annular shielding groove, and the annular body of the contact finger spring protrudes from the annular shielding groove.

3. The high voltage connector for an automobile transmission according to claim 2, wherein The high-voltage connector further comprises a shell sealing ring, and the shell bracket part is further provided with a waterproof groove, and the shell sealing ring is arranged in the waterproof groove.

4. The high voltage connector for an automobile transmission according to claim 3, wherein The high-voltage connector further comprises fixing glue, and the fixing glue is arranged in the annular shielding groove.

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