Novel high-voltage connector airtightness detection tool

Abstract

The utility model belongs to the technical field of high-voltage connector airtightness detection, and discloses a novel high-voltage connector airtightness detection tool which comprises a tool shell used for installing a plate end connector and a wire end connector, one side of the tool shell is provided with an opening, and the plate end connector and the wire end connector are located on the inner side and the outer side of the tool shell respectively. A through hole is formed in the tool shell in a penetrating mode, the inserting end of a plate end connector can penetrate through the through hole so that the inserting end of the plate end connector can be connected with a wire end connector in an inserting mode, a tool cover plate is detachably connected to the side, away from the wire end connector, of the tool shell, and the tool cover plate and the side wall of the opening side of the tool shell are sealed through a sealing ring. An airtight equipment connecting pipe fixed to the tool cover plate is arranged on the tool cover plate in a penetrating mode. According to the invention, after the vibration test of the tool along with the wire harness assembly is carried out, the accuracy of re-testing the airtightness is ensured.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage connector airtightness testing technology, and in particular to a novel high-voltage connector airtightness testing fixture. Background Technology

[0002] High-voltage connectors are used to connect the control unit and the battery in new energy vehicles. The current in the wiring harness is high and the voltage is high. If the airtightness of the high-voltage connector is not sufficient, it will lead to water leakage, short circuit, or even spontaneous combustion of new energy vehicles.

[0003] When performing airtightness testing on high-voltage connectors, the airtightness of the high-voltage connectors mounted on the airtightness testing fixture must first be tested. Then, the fixture is vibrated to simulate the vibration during vehicle operation, and the airtightness of the high-voltage connectors is tested again.

[0004] Automotive high-voltage wiring harnesses typically include wire-end connectors and board-end connectors that interlock with each other. In existing technologies, when performing airtightness testing on automotive high-voltage wiring harness assemblies, the wire-end connectors are usually mounted on a fixture used for airtightness testing (such as existing fixtures). Figure 1 As shown in the figure, the fixture is connected to the airtightness testing equipment to perform airtightness testing on the wire end connector. However, the board end connector cannot be installed on the fixture as well, so it is impossible to simulate the state after the wire end connector and the board end connector are plugged in. This means that when the fixture vibrates with the wiring harness assembly, the interaction and wear state of the board end and wire end connectors during the vibration test cannot be reflected during the retest of airtightness, which has a certain impact on the retest results of airtightness. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a novel high-voltage connector airtightness testing fixture.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a novel high-voltage connector airtightness testing fixture, comprising a fixture housing for mounting a board-end connector and a wire-end connector, wherein one side of the fixture housing is open, the board-end connector and the wire-end connector are respectively located on the inner and outer sides of the fixture housing, a through hole is provided on the fixture housing for the insertion end of the board-end connector to pass through and be inserted into the wire-end connector, a fixture cover plate is detachably connected to the side of the fixture housing away from the wire-end connector, the fixture cover plate and the side wall of the opening side of the fixture housing are sealed by a sealing ring, and an airtightness equipment connecting pipe fixed to the fixture cover plate is provided through the fixture cover plate.

[0007] By adopting the above technical solution, both the board-end connector and the wire-end connector are installed on the tooling housing, which can maintain the mating state of the wire-end connector and the board-end connector, and ensure the accuracy of the airtightness test results after the tooling is subjected to vibration test with the wiring harness assembly.

[0008] Furthermore, a first annular groove that mates with one side of the sealing ring is provided on the side wall of the tooling housing opening side, and a second annular groove that mates with the other side of the sealing ring is provided on the side of the tooling cover plate near the wire connector.

[0009] By adopting the above technical solution, the setting of the first annular groove and the second annular groove plays a role in pre-positioning the installation of the sealing ring, thereby enhancing the stability and sealing performance of the sealing ring during use.

[0010] Furthermore, the tooling housing is provided with screw holes for the screws of the connecting plate end connector and the tooling housing to pass through, and a connecting post for threaded connection with the screw of the fixing line end connector is fixed on the side of the tooling housing away from the tooling cover plate.

[0011] By adopting the above technical solution, the screw hole design facilitates the connection of the board-end connector to the tooling housing by the operator using screws, and the connection post design facilitates the connection of the wire-end connector to the tooling housing by the operator using screws.

[0012] Furthermore, a ring body is fixed on the side of the tooling housing away from the tooling cover plate, which is engaged with the wire connector, and a cutting part for clearance is provided on the side of the connecting post near the ring body.

[0013] Furthermore, two limiting posts are fixed on the side of the tooling housing away from the tooling cover plate to limit the movement of the wire connector on both sides.

[0014] By adopting the above technical solution, the setting of the ring body and the limiting post enhances the fixing effect on the wire end connector and enhances the stability of the wire end connector during the airtightness test.

[0015] Furthermore, an annular stepped groove for engaging with the annular rubber ring on the wire connector is provided at the intersection between the inner wall of the ring and the side wall of the ring away from the tooling cover plate.

[0016] By adopting the above technical solution, the annular stepped groove design enables the annular rubber ring on the wire connector to maintain a tight seal between the connection and the tooling housing.

[0017] Furthermore, the airtight equipment connecting pipe is located on the side of the tooling cover plate away from the tooling housing, and is located at the center of the tooling cover plate.

[0018] By adopting the above technical solution,

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. In this application, both the board-end connector and the wire-end connector are mounted on the tooling housing, which can maintain the mating state of the wire-end connector and the board-end connector, and ensure the accuracy of the airtightness test results after the tooling is subjected to vibration test with the wiring harness assembly.

[0021] 2. In this application, the first annular groove and the second annular groove are provided to pre-position the sealing ring during installation, thereby enhancing the stability and sealing performance of the sealing ring during use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an airtightness testing fixture in the prior art;

[0023] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0025] Figure 4 This is a schematic diagram illustrating the connection between the tooling housing, the board-end connector, and the wire-end connector in this embodiment of the utility model.

[0026] In the diagram: 1. Board connector; 2. Wire connector; 3. Tooling housing; 31. Through hole; 32. First annular groove; 33. Screw hole; 4. Tooling cover plate; 41. Second annular groove; 5. Sealing ring; 6. Airtight equipment connecting pipe; 7. Connecting post; 71. Cutting part; 8. Ring body; 81. Annular stepped groove; 9. Limiting post. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-4As shown in the figure, this application discloses a novel high-voltage connector airtightness testing fixture, including a fixture housing 3 for mounting a board-end connector 1 and a wire-end connector 2. The fixture housing 3 has an opening on one side, with the board-end connector 1 and the wire-end connector 2 located on the inner and outer sides of the fixture housing 3, respectively. A through hole 31 is provided on the fixture housing 3 for the insertion end of the board-end connector 1 to pass through and be inserted into the wire-end connector 2. A fixture cover plate 4 is detachably connected to the side of the fixture housing 3 away from the wire-end connector 2. The fixture cover plate 4 and the side wall of the opening side of the fixture housing 3 are sealed by a sealing ring 5. An airtightness equipment connecting pipe 6 is provided through the fixture cover plate 4 and fixed to the fixture cover plate 4. By connecting the pipeline of the airtightness test bench to the airtightness equipment connecting pipe 6 on the fixture cover plate 4, an airtightness test can be performed.

[0029] Both board-end connector 1 and wire-end connector 2 are mounted on the fixture housing 3, which can maintain the mating state of wire-end connector 2 and board-end connector 1, ensuring the accuracy of the retest results after the fixture undergoes vibration test with the wiring harness assembly.

[0030] The tooling housing 3 has a first annular groove 32 on the side wall of the opening side that mates with one side of the sealing ring 5, and the tooling cover plate 4 has a second annular groove 41 on the side near the wire connector 2 that mates with the other side of the sealing ring 5. The first annular groove 32 and the second annular groove 41 are provided to pre-position the sealing ring 5 during installation, thereby enhancing the stability and sealing performance of the sealing ring 5 during use.

[0031] To facilitate the installation of the board-end connector 1 onto the fixture, the fixture housing 3 is provided with screw holes 33 for the screws connecting the board-end connector 1 and the fixture housing 3 to pass through. To facilitate the installation of the wire-end connector 2 onto the fixture, a connecting post 7 for threaded connection with the screws fixing the wire-end connector 2 is fixed on the side of the fixture housing 3 away from the fixture cover plate 4.

[0032] A ring 8, which engages with the wire connector 2, is fixed to the side of the fixture housing 3 away from the fixture cover plate 4. A cutting part 71 for clearance is provided on the side of the connecting post 7 near the ring 8. Two limiting posts 9 are fixed to the side of the fixture housing 3 away from the fixture cover plate 4 to limit the movement of the wire connector 2 on both sides. The ring 8 and the limiting posts 9 enhance the fixing effect of the wire connector 2 and improve the stability of the wire connector 2 during the airtightness testing process.

[0033] An annular stepped groove 81 is provided at the intersection between the inner wall of the ring body 8 and the side wall of the ring body 8 away from the tooling cover plate 4, for engaging with the annular rubber ring on the wire connector 2. The annular stepped groove 81 ensures that the annular rubber ring on the wire connector 2 maintains a tight seal between itself and the tooling housing 3. In this embodiment, a sealing rubber ring (not shown in the figure) is provided on the edge of the plate connector 1. After the operator tightens the screw, the plate connector 1 engages with the tooling housing 3 and abuts against the corresponding rubber ring, ensuring a tight seal at the connection between the plate connector 1 and the tooling housing 3. The airtight equipment connecting pipe 6 is located on the side of the tooling cover plate 4 away from the tooling housing 3 and is located at the center of the tooling cover plate 4.

[0034] The working principle of the novel high-voltage connector airtightness testing fixture in this embodiment is as follows: both the board-end connector 1 and the wire-end connector 2 are installed on the fixture housing 3, which can maintain the docking state between the wire-end connector 2 and the board-end connector 1, and ensure the accuracy of the retest results after the fixture undergoes vibration test with the wiring harness assembly.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A novel high-voltage connector airtightness testing fixture, characterized in that: The fixture includes a fixture housing (3) for mounting a board-end connector (1) and a wire-end connector (2). The fixture housing (3) has an opening on one side. The board-end connector (1) and the wire-end connector (2) are located on the inner and outer sides of the fixture housing (3), respectively. A through hole (31) is provided through the fixture housing (3) for the insertion end of the board-end connector (1) to pass through and be inserted into the wire-end connector (2). A fixture cover plate (4) is detachably connected to the side of the fixture housing (3) away from the wire-end connector (2). The fixture cover plate (4) and the side wall of the opening side of the fixture housing (3) are sealed by a sealing ring (5). An airtight equipment connecting pipe (6) is provided through the fixture cover plate (4) and fixed to the fixture cover plate (4).

2. The novel high-voltage connector airtightness testing fixture according to claim 1, characterized in that: The tool housing (3) has a first annular groove (32) on the side wall of the opening side that mates with one side of the sealing ring (5), and the tool cover plate (4) has a second annular groove (41) on the side near the wire connector (2) that mates with the other side of the sealing ring (5).

3. The novel high-voltage connector airtightness testing fixture according to claim 1, characterized in that: The tooling housing (3) is provided with screw holes (33) through which the screws of the connecting plate end connector (1) and the tooling housing (3) pass. A connecting post (7) for threaded connection with the screw of the fixed wire end connector (2) is fixed on the side of the tooling housing (3) away from the tooling cover plate (4).

4. The novel high-voltage connector airtightness testing fixture according to claim 3, characterized in that: The tooling housing (3) is fixed with a ring (8) that is engaged with the wire connector (2) on the side away from the tooling cover plate (4), and the connecting post (7) is provided with a cutting part (71) for clearance on the side near the ring (8).

5. A novel high-voltage connector airtightness testing fixture according to claim 4, characterized in that: Two limiting posts (9) are fixed on the side of the tooling housing (3) away from the tooling cover plate (4) for limiting the two sides of the wire connector (2).

6. The novel high-voltage connector airtightness testing fixture according to claim 4, characterized in that: An annular stepped groove (81) for engaging with the annular rubber ring on the wire connector (2) is provided at the intersection of the inner wall of the ring body (8) and the side wall of the ring body (8) away from the tooling cover plate (4).

7. The novel high-voltage connector airtightness testing fixture according to claim 1, characterized in that: The airtight equipment connecting pipe (6) is located on the side of the tooling cover plate (4) away from the tooling housing (3) and at the center of the tooling cover plate (4).

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