A high-voltage connector airtight test tool
By designing a high-voltage connector airtightness testing fixture with sealing, guiding, and buffering mechanisms, the problems of test inaccuracy and mechanical damage caused by unstable sealing were solved, achieving efficient and accurate airtightness testing.
Patent Information
- Application Number
- CN202521642422.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2035-08-04
AI Technical Summary
During the airtightness test, unstable sealing leads to inaccurate test results and mechanical damage, and also results in low operational efficiency.
A high-voltage connector airtightness testing fixture was designed, which includes a sealing mechanism, a guiding mechanism, and a buffering mechanism. The stability and accuracy of the testing process are ensured by the tight fit between the sealing ring and the sealing groove, the stable guidance of the guiding mechanism, and the stress dispersion of the buffering mechanism.
It improves the accuracy and efficiency of airtightness testing, reduces the risk of mechanical damage, extends equipment lifespan, and reduces maintenance frequency and costs.
Smart Images
Figure CN224499801U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airtightness testing technology, specifically a high-voltage connector airtightness testing fixture. Background Technology
[0002] Air tightness testing, also known as airtightness inspection, is a test method used to detect whether there is gas leakage in containers, pipes, equipment, or closed systems. This test usually involves filling the object under test with gas at a certain pressure and then monitoring the pressure change to assess whether its sealing performance meets the specified standards. Air tightness testing is widely used in aerospace, automobile manufacturing, pressure vessels, HVAC systems and other fields, and is one of the important means to ensure the safe and efficient operation of the system.
[0003] In actual operation, unstable sealing of the airtightness testing fixture can affect the accuracy of the test results. After placing the test piece, if the testing fixture is not properly guided while achieving a seal, it may shift or tilt, which will not only affect the sealing effect but also cause mechanical damage to the connector or the fixture itself. Furthermore, the sealing state needs to be manually adjusted repeatedly during operation, which is inefficient and cannot meet the requirements of high-efficiency and high-precision testing.
[0004] Therefore, this utility model provides a high-voltage connector airtightness testing fixture to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This invention provides a high-voltage connector airtightness testing fixture, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage connector airtightness testing fixture, including a fixed base, a side plate fixedly connected to one side of the upper surface of the fixed base, and a sealing mechanism provided above the fixed base;
[0009] The sealing mechanism includes an airtightness test chamber, a sealing groove is provided on the top of the airtightness test chamber, a cylinder is fixedly installed on the top of the inner cavity of the side plate, a positioning cover is fixedly connected to the output end of the cylinder, a sealing ring that matches the sealing groove is fixedly connected to the bottom of the positioning cover, and a guide mechanism is provided above the fixed base.
[0010] The guiding mechanism includes a guide post, with two connecting rods fixedly connected to the top of the guide post, a sliding rod slidably connected to the inner cavity of the guide post, and an L-shaped plate fixedly connected to one side of the sliding rod.
[0011] As a preferred technical solution of this application, the bottom of the airtightness test chamber is fixedly connected to the top of the fixed base, and the outer surface of the sealing ring is engaged with the inner cavity of the sealing groove.
[0012] As a preferred technical solution of this application, the guide mechanism is provided in two parts: the top of the connecting rod is fixedly connected to the top of the inner cavity of the side plate, and one end of the L-shaped plate is fixedly connected to the top of the positioning cover.
[0013] As a preferred technical solution of this application, a buffer mechanism is provided above the fixed base; there are two buffer mechanisms, each including a buffer chamber, a buffer pad is provided in the inner cavity of the buffer chamber, a support rod is provided at the middle position of the inner cavity of the buffer chamber, and two bearing plates are sleeved on the outer ring of the support rod.
[0014] As a preferred technical solution of this application, a first triangular block is fixedly connected to both inner walls of the buffer chamber, and a second triangular block is fixedly connected to one side of the bearing plate. The first triangular block and the corresponding second triangular block are fixedly connected by a damping rod.
[0015] As a preferred technical solution of this application, the bottom of the buffer chamber is fixedly connected to the top of the fixed base, the two ends of the support rod are respectively fixedly connected to the inner wall of the adjacent buffer chamber, and the top of the bearing plate is fixedly connected to the bottom of the buffer pad.
[0016] (III) Beneficial Effects
[0017] The sealing mechanism ensures excellent sealing performance of the high-voltage connector during airtightness testing. Combined with the guiding mechanism, the positioning cover moves stably downwards along a predetermined trajectory under cylinder drive, improving the alignment accuracy between the sealing ring and the sealing groove. This effectively solves the problem of unstable sealing caused by offset or tilting during the sealing process, improving the accuracy of test results, reducing the probability of repeated testing due to poor sealing, minimizing manual adjustments to the sealing state, and increasing testing efficiency, thus meeting the demands for high-efficiency and high-precision testing.
[0018] By incorporating a buffer mechanism, the stability of the positioning cover during the pressing process is improved, and the risk of deformation of the sealing ring, wear of the sealing groove, and damage to the high-voltage connector body caused by rigid impact is reduced. This improves the smoothness of the testing process and the reliability of the seal, while extending the overall service life of the testing fixture, reducing the frequency of daily maintenance and replacement costs, and demonstrating good practicality and structural optimization. Attached Figure Description
[0019] Figure 1 A schematic diagram of the overall structure of a high-voltage connector airtightness testing fixture;
[0020] Figure 2 This is a schematic diagram of the cylinder in a high-voltage connector airtightness testing fixture.
[0021] Figure 3 This is a schematic diagram of the positioning cover in a high-voltage connector airtightness testing fixture.
[0022] Figure 4 This is a schematic diagram of the internal structure of the buffer chamber in a high-voltage connector airtightness testing fixture.
[0023] In the picture:
[0024] 1. Fixed base; 2. Side plate; 3. Sealing mechanism; 31. Air tightness test chamber; 32. Positioning cover; 33. Sealing ring; 34. Sealing groove; 4. Guide mechanism; 41. Guide column; 42. Connecting rod; 43. Sliding rod; 44. L-shaped plate; 5. Buffer mechanism; 51. Buffer chamber; 52. Buffer pad; 53. Support rod; 54. Bearing plate; 55. First triangular block; 56. Second triangular block; 57. Damping rod; 6. Cylinder. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] This utility model provides a high-voltage connector airtightness testing fixture, such as... Figure 1 - Figure 4 As shown, the technical solution includes a fixed base 1, a side plate 2 is fixedly connected to one side of the upper surface of the fixed base 1, and a sealing mechanism 3 is provided above the fixed base 1.
[0027] The sealing mechanism 3 includes an airtight test chamber 31, a sealing groove 34 is provided on the top of the airtight test chamber 31, a cylinder 6 is fixedly installed on the top of the inner cavity of the side plate 2, a positioning cover 32 is fixedly connected to the output end of the cylinder 6, a sealing ring 33 that matches the sealing groove 34 is fixedly connected to the bottom of the positioning cover 32, and a guide mechanism 4 is provided above the fixed base 1.
[0028] The guiding mechanism 4 includes a guide post 41, with two connecting rods 42 fixedly connected to the top of the guide post 41, a sliding rod 43 slidably connected to the inner cavity of the guide post 41, and an L-shaped plate 44 fixedly connected to one side of the sliding rod 43.
[0029] The bottom of the airtightness test chamber 31 is fixedly connected to the top of the fixed base 1. The outer surface of the sealing ring 33 is engaged with the inner cavity of the sealing groove 34. The tight fit between the sealing ring 33 and the sealing groove 34 improves the sealing performance in the airtightness test, reduces the test error caused by poor sealing, and enhances the reliability of the test results.
[0030] Two guide mechanisms 4 are provided. The top of the connecting rod 42 is fixedly connected to the top of the inner cavity of the side plate 2, and one end of the L-shaped plate 44 is fixedly connected to the top of the positioning cover 32. The positioning cover 32 moves stably along the preset path during the descent, preventing the occurrence of offset or tilting. This achieves the purpose of improving the docking accuracy between the sealing ring 33 and the sealing groove 34, improving sealing efficiency and stability, reducing the need for manual adjustment, and improving the convenience and efficiency of the overall operation.
[0031] A buffer mechanism 5 is provided above the fixed base 1; there are two buffer mechanisms 5, each including a buffer chamber 51, a buffer pad 52 is provided in the inner cavity of the buffer chamber 51, a support rod 53 is provided in the middle of the inner cavity of the buffer chamber 51, and two bearing plates 54 are sleeved on the outer ring of the support rod 53, which effectively disperses the concentrated stress generated when the positioning cover 32 is pressed down, avoids damage to the components caused by rigid impact, and achieves the effect of protecting the sealing ring 33, the sealing groove 34 and the high-voltage connector body from damage, extending the service life of the equipment and reducing maintenance costs.
[0032] Both sides of the inner wall of the buffer chamber 51 are fixedly connected with a first triangular block 55, and one side of the bearing plate 54 is fixedly connected with a second triangular block 56. One side of the first triangular block 55 and the corresponding side of the second triangular block 56 are fixedly connected by a damping rod 57, which optimizes the force transmission path, absorbs and mitigates vibration and impact energy, enhances the overall stability of the system, and improves the smoothness and safety during the test.
[0033] The bottom of the buffer chamber 51 is fixedly connected to the top of the fixed base 1, the two ends of the support rod 53 are fixedly connected to the inner wall of the adjacent buffer chamber 51 respectively, and the top of the bearing plate 54 is fixedly connected to the bottom of the buffer pad 52. The firm connection and coordinated work between the various components achieve the effect of compact structure and stable operation.
[0034] Specifically: First, the operator places the high-voltage connector to be tested inside the airtightness test chamber 31, ensuring it is in the correct testing position. Then, the operator activates cylinder 6, causing its output end to move downwards, simultaneously lowering the connected positioning cover 32. During this descent, the positioning cover 32 moves the sealing ring 33 towards the inner cavity of the sealing groove 34 to achieve a sealing fit. Simultaneously, the L-shaped plate 44 fixed to the positioning cover 32 moves downwards, causing the sliding rod 43 to slide along the inner cavity of the guide post 41. This guiding structure effectively ensures that the positioning cover 32 maintains stable vertical movement during descent, preventing misalignment of the sealing ring 33 with the sealing groove 34 due to offset or tilt, thus avoiding a leaky seal. After the sealing ring 33 is fully embedded in the sealing groove 34, a relatively enclosed testing space is formed inside the airtightness test chamber 31. The airtightness test chamber 31 is then connected to an external air supply device, allowing air to be supplied to the airtightness test chamber via the external air supply device. High-pressure gas is injected into cavity 31 to test the airtightness of the high-voltage connector under test. After the sealing ring 33 and the sealing groove 34 are aligned, the connecting rod 42 continues to move downward and contact the inner cavity of the buffer pad 52. The buffer pad 52 distributes the force evenly after being subjected to pressure, and then transmits the force to the bearing plate 54 below. After receiving the pressure, the bearing plate 54 disperses the concentrated stress into multiple component forces through the first triangular block 55, thereby effectively reducing the phenomenon of local stress concentration. Subsequently, the component force continues to be transmitted to the damping rod 57. The damping rod 57 absorbs part of the vibration and impact energy through its own structure, further reducing the intensity of force transmission. Finally, the force is transmitted from the damping rod 57 to the second triangular block 56, realizing multiple buffering and stable release of pressure. After the test is completed, the output end of the cylinder 6 drives the positioning cover 32 to move upward, causing the positioning cover 32 and the sealing ring 33 to disengage from the sealing groove 34. The operator can then remove the high-voltage connector, completing a complete test process.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A high-voltage connector airtightness testing fixture, comprising a fixed base (1), characterized in that: A side plate (2) is fixedly connected to one side of the upper surface of the fixed base (1), and a sealing mechanism (3) is provided above the fixed base (1). The sealing mechanism (3) includes an airtight test chamber (31), the top of which is provided with a sealing groove (34), a cylinder (6) is fixedly installed on the top of the inner cavity of the side plate (2), a positioning cover (32) is fixedly connected to the output end of the cylinder (6), a sealing ring (33) that matches the sealing groove (34) is fixedly connected to the bottom of the positioning cover (32), and a guide mechanism (4) is provided above the fixed base (1). The guiding mechanism (4) includes a guide post (41), the top of which is fixedly connected to two connecting rods (42), and the inner cavity of the guide post (41) is slidably connected to a sliding rod (43), and one side of the sliding rod (43) is fixedly connected to an L-shaped plate (44).
2. The high-voltage connector airtightness testing fixture according to claim 1, characterized in that: The bottom of the airtight test chamber (31) is fixedly connected to the top of the fixed base (1), and the outer surface of the sealing ring (33) is engaged with the inner cavity of the sealing groove (34).
3. The high-voltage connector airtightness testing fixture according to claim 1, characterized in that: The guide mechanism (4) is provided in two parts. The top of the connecting rod (42) is fixedly connected to the top of the inner cavity of the side plate (2), and one end of the L-shaped plate (44) is fixedly connected to the top of the positioning cover (32).
4. The high-voltage connector airtightness testing fixture according to claim 1, characterized in that: A buffer mechanism (5) is provided above the fixed base (1); there are two buffer mechanisms (5), each including a buffer chamber (51), a buffer pad (52) is provided in the inner cavity of the buffer chamber (51), a support rod (53) is provided at the middle position of the inner cavity of the buffer chamber (51), and two bearing plates (54) are sleeved on the outer ring of the support rod (53).
5. The high-voltage connector airtightness testing fixture according to claim 4, characterized in that: The inner walls of both sides of the buffer chamber (51) are fixedly connected with a first triangular block (55), and a second triangular block (56) is fixedly connected to one side of the bearing plate (54). One side of the first triangular block (55) and the corresponding side of the second triangular block (56) are fixedly connected by a damping rod (57).
6. The high-voltage connector airtightness testing fixture according to claim 5, characterized in that: The bottom of the buffer chamber (51) is fixedly connected to the top of the fixed base (1), the two ends of the support rod (53) are fixedly connected to the inner wall of the adjacent buffer chamber (51) respectively, and the top of the bearing plate (54) is fixedly connected to the bottom of the buffer pad (52).