Air tightness detection tool suitable for automobile high-voltage copper bar injection molding part

Abstract

The utility model discloses an air tightness detection tool suitable for an automobile high-voltage copper bar injection molding part, which comprises a bottom plate, a stand column and a transparent hollow lower die arranged on the bottom plate, a fixed plate fixedly arranged at the top end of the stand column, a hinge assembly arranged on the fixed plate, a connecting rod fixedly connected to the lower end of the hinge assembly, and a pressure head arranged at the lower end part of the connecting rod, a containing cavity is formed in the transparent hollow lower mold and used for containing a high-voltage copper bar injection molding part to be detected, a through hole groove is formed in the upper end portion of the transparent hollow lower mold, the through hole groove corresponds to an O-shaped ring in the middle of the high-voltage copper bar injection molding part and can be in sealing fit with the O-shaped ring, and an inflation connector is arranged on the side portion of the transparent hollow lower mold. The air pump is used for inflating the containing cavity. According to the air tightness detection tool suitable for the automobile high-voltage copper bar injection molding part, failure analysis can be visually carried out on the high-voltage copper bar injection molding part, the requirement for failure analysis along with failure parts is met, and the tool is convenient to operate, simple in structure and high in repeatability.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile component performance detection, and relates to a tool suitable for airtight detection process analysis, in particular to an airtight detection tool suitable for automobile high-voltage copper busbar injection molding parts. Background Art

[0002] Because new energy electric vehicles need to convert the DC power of the power battery into the required high-voltage AC power and drive the motor body to output mechanical energy, the increase in electrical equipment and the improvement of automation in the power system of new energy vehicles have led to the complexity of the on-board circuit and the increase in voltage level. As a representative part of the high-voltage copper busbar assembly, the process is to ensure that the two indicators of electrical clearance and creepage distance meet the requirements. Among them, the electrical clearance and creepage distance are closely related to the air tightness of the high-voltage copper busbar assembly, and the air tightness of the high-voltage copper busbar assembly needs to be tested. Due to the structural reasons of the high-voltage copper busbar assembly, there is no special equipment for its air tightness test. Therefore, it is of great significance to design a kind of air tightness test tooling for automotive high-voltage copper busbar injection molding, which can intuitively perform failure analysis on failed parts. Utility Model Content

[0003] In view of the above-mentioned problems, the utility model provides a tool suitable for air tightness detection of automobile high-voltage copper busbar injection molding parts, which can intuitively perform failure analysis on failed parts.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A gas tightness detection tool suitable for automobile high-pressure copper busbar injection molding parts, comprising a base plate, a column and a transparent hollow lower mold are arranged on the base plate, a fixing plate is fixedly arranged on the top of the column, a hinge assembly is arranged on the fixing plate, a connecting rod is fixedly connected to the lower end of the hinge assembly, a pressure head is arranged on the lower end of the connecting rod, a receiving cavity is arranged inside the transparent hollow lower mold for receiving the high-pressure copper busbar injection molding part to be tested, a through hole groove is arranged at the upper end of the transparent hollow lower mold, the through hole groove corresponds to the O-ring in the middle of the high-pressure copper busbar injection molding part to form a sealing fit, and an inflation joint is arranged on the side of the transparent hollow lower mold for inflating the inside of the receiving cavity.

[0006] According to a further technical solution, the hinge assembly includes a hinge seat and a control handle, the upper and lower ends of the hinge seat are respectively provided with a fixed hinge part and a positioning sleeve, the end of the control handle is rotatably connected to the fixed hinge part, the upper end of the connecting rod passes through the positioning sleeve and is connected to the control handle through a movable connection assembly, and the control handle can drive the connecting rod to move up and down.

[0007] According to a further technical solution, the lower end of the connecting rod is provided with an internal thread, and the middle of the pressure head is provided with a penetrating threaded hole, which is fixedly connected to the lower end of the connecting rod by a bolt assembly.

[0008] According to a further technical solution, the pressure head is aligned with the accommodating cavity inside the transparent hollow lower mold; and the transparent hollow lower mold is made of a transparent acrylic material.

[0009] According to a further technical solution, a movable handle is provided on the bottom plate to facilitate the movement of the entire tooling.

[0010] According to a further technical solution, the high-voltage copper busbar injection molded part to be tested is made of copper plates by injection molding, and includes three copper plates connected up and down and attached injection molded parts. An O-ring is provided in the middle of the high-voltage copper busbar injection molded part.

[0011] Through the utility model, which is suitable for the air tightness detection tooling of automobile high-pressure copper busbar injection molding parts, failure analysis can be intuitively performed on the high-pressure copper busbar injection molding parts, meeting the requirement of performing failure analysis along with failed parts. The tooling is easy to operate, simple in structure, and highly repeatable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the air tightness detection tooling of the utility model;

[0013] Figure 2 for Figure 1 A front view of

[0014] Figure 3 for Figure 2 A vertical cross-sectional view of

[0015] Figure 4 This is a schematic diagram of the structure of the hinge assembly of the utility model;

[0016] Figure 5 This is a schematic diagram of the transparent hollow lower mold structure of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the high-voltage copper busbar injection molding part;

[0018] In the figure: 1. bottom plate; 2. column; 3. transparent hollow lower mold; 31. accommodating cavity; 32. through hole groove; 33. inflation joint; 4. fixing plate; 5. hinge assembly; 51. hinge seat; 52. control handle; 53. fixed hinge part; 54. positioning sleeve; 55. movable connection assembly; 6. connecting rod; 7. pressure head; 8. high-pressure copper busbar injection molding; 9. moving handle. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0020] like Figure 1-Figure 3 As shown, a gas tightness detection tool suitable for automobile high-pressure copper busbar injection molding parts comprises a base plate 1, on which a column 2 and a transparent hollow lower mold 3 are arranged, a fixing plate 4 is fixedly arranged at the top of the column 2, a hinge assembly 5 is arranged on the fixing plate 4, a connecting rod 6 is fixedly connected to the lower end of the hinge assembly 5, and a pressure head 7 is arranged at the lower end of the connecting rod 6, an accommodating cavity 31 is arranged inside the transparent hollow lower mold 3 for accommodating the high-pressure copper busbar injection molding part 8 to be tested, a through hole groove 32 is arranged at the upper end of the transparent hollow lower mold 3, and the through hole groove 32 corresponds to the O-ring 81 in the middle of the high-pressure copper busbar injection molding part 8 to form a sealing fit, and an inflation joint 33 is arranged on the side of the transparent hollow lower mold 3 for inflating the inside of the accommodating cavity 31.

[0021] like Figure 4 As shown, the hinge assembly 5 includes a hinge seat 51 and a control handle 52. The upper end and lower end of the hinge seat 51 are respectively provided with a fixed hinge portion 53 and a positioning sleeve 54. The end of the control handle 52 is rotatably connected to the fixed hinge portion 53. The upper end of the connecting rod 6 is arranged through the positioning sleeve 54 and is connected to the control handle 52 through a movable connection assembly 55. The control handle 52 can drive the connecting rod 6 to move up and down.

[0022] The lower end of the connecting rod 6 is provided with an internal thread, and the middle of the pressing head 7 is provided with a threaded hole that penetrates through it, and is fixedly connected to the lower end of the connecting rod 6 by a bolt assembly. The pressing head 7 is arranged to align with the accommodating cavity 31 inside the transparent hollow lower mold 3.

[0023] The hinge assembly 5 of the utility model has a reasonable structure, and the hinge stroke can ensure the stability of the product position, and the product position will not float up and down during inflation to cause pressure fluctuations.

[0024] like Figure 5 As shown, the transparent hollow lower mold 3 is made of transparent acrylic material, which can visually observe leakage during airtightness detection. The upper end of the transparent hollow lower mold 3 is provided with a through hole groove 32, which corresponds to the O-ring 81 in the middle of the high-pressure copper bar injection molded part 8 to form a sealed fit.

[0025] Preferably, a moving handle 9 is also provided on the base plate 1 to facilitate the movement of the entire tooling.

[0026] like Figure 6 As shown in the figure, the high-voltage copper bar injection molded part 8 to be tested in the utility model is made of copper plates by injection molding process, including three copper plates connected up and down and attached injection molded parts. The copper plates are arranged at approximately right angles, and an O-ring 81 is arranged in the middle of the high-voltage copper bar injection molded part 8. When performing air tightness testing, the main test is the positions A, B, C, and D of the workpiece after injection molding (such as Figure 6 as shown) and the bonding of the metal sheet and the injection molded part at the internal injection-molded penetration.

[0027] When the utility model device performs air tightness testing, firstly, the lower part of the high-pressure copper bar injection molding 8 to be tested (i.e. Figure 6 The A, B, and C ends of the transparent hollow lower mold 3 are placed in the through-hole groove 32 of the transparent hollow lower mold 3, and then the handle 52 is operated to drive the pressure head 7 to press down, so that the middle O-ring 81 of the high-pressure copper bar injection molded part 8 is in close contact with the through-hole groove 32 to form a seal, and the pressure head 7 positions and fixes the high-pressure copper bar injection molded part 8, and then inflates the accommodating cavity 31 of the transparent hollow lower mold 3 through the inflation joint 33. Figure 6 If there is leakage in the passages at the A, B, and C positions, bubbles will appear at the junction at the D end. If there is an airtightness problem at the O-ring, bubbles will also appear. Through the device of the utility model, the leakage position and the number of leakage points can be accurately observed, and the leakage phenomenon can be observed stably and continuously, which is very convenient and intuitive for product failure analysis and improves work efficiency.

[0028] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air tightness detection tool suitable for automobile high-voltage copper busbar injection molding parts, characterized in that: The invention comprises a bottom plate (1), on which a column (2) and a transparent hollow lower mold (3) are arranged, a fixing plate (4) is fixedly arranged at the top of the column (2), a hinge assembly (5) is arranged on the fixing plate (4), a connecting rod (6) is fixedly connected to the lower end of the hinge assembly (5), a pressure head (7) is arranged at the lower end of the connecting rod (6), a receiving cavity (31) is arranged inside the transparent hollow lower mold (3) for receiving a high-pressure copper busbar injection molded part (8) to be tested, a through hole groove (32) is arranged at the upper end of the transparent hollow lower mold (3), the through hole groove (32) corresponds to an O-ring (81) in the middle of the high-pressure copper busbar injection molded part (8) to form a sealed fit, and an inflation joint (33) is arranged on the side of the transparent hollow lower mold (3) for inflating the inside of the receiving cavity (31).

2. The air tightness detection tooling for automobile high-voltage copper busbar injection molding according to claim 1 is characterized in that: The hinge assembly (5) comprises a hinge seat (51) and a control handle (52); the upper end and the lower end of the hinge seat (51) are respectively provided with a fixed hinge portion (53) and a positioning shaft sleeve (54); the end of the control handle (52) is rotatably connected to the fixed hinge portion (53); the upper end of the connecting rod (6) passes through the positioning shaft sleeve (54) and is connected to the control handle (52) via a movable connection assembly (55); the control handle (52) can drive the connecting rod (6) to move up and down.

3. The air tightness detection tooling for automobile high-voltage copper busbar injection molding according to claim 1 is characterized in that: The lower end of the connecting rod (6) is provided with an internal thread, and the middle of the pressing head (7) is provided with a threaded hole extending therethrough, and is fixedly connected to the lower end of the connecting rod (6) via a bolt assembly.

4. The air tightness detection tooling for automobile high-voltage copper bar injection molding according to claim 3 is characterized in that: The pressing head (7) is arranged to align with the accommodating cavity (31) inside the transparent hollow lower mold (3).

5. The air tightness detection tooling for automobile high-voltage copper busbar injection molding according to claim 1 is characterized in that: The transparent hollow lower mold (3) is made of transparent acrylic material.

6. The air tightness detection tooling for automobile high-voltage copper bar injection molding according to claim 1 is characterized in that: A moving handle (9) is also provided on the bottom plate (1) to facilitate the movement of the entire tooling.

7. The air tightness detection tooling for automobile high-voltage copper bar injection molding according to claim 1 is characterized in that: The high-voltage copper busbar injection molded part (8) to be tested comprises three copper plates connected up and down and an attached injection molded part, and an O-ring (81) is provided in the middle of the high-voltage copper busbar injection molded part (8).

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