An air duct assembly leak detection tool

Abstract

The utility model discloses a kind of air duct assembly airtightness detection tools, including bottom plate, the side welding of bottom plate has first mounting plate, detection shell is installed on the bottom plate, the upper end of the detection shell is connected with cover, the adjustment mechanism is movably connected with first mounting plate, the other end of the adjustment mechanism is connected with the cover, the lower end of the cover is equipped with sealing plate, the sealing plate sealingly fits in the inner wall side of the detection shell;The utility model is convenient for the air tightness detection of different shape air duct, can adapt to different shape air duct;By adjustment mechanism, open-close control is carried out to cover, i. e. by servo cylinder, first L-shaped plate is pulled, cover can be lifted and adjusted, and first L-shaped plate is pulled and adjusted to second L-shaped plate by first crank rod, connecting piece and second crank rod, to control cover to realize horizontal conversion into vertical state, it is convenient for open-close control of cover.

Description

Technical Field

[0001] This utility model applies to vehicle air ducts, and more specifically to the air tightness testing of air ducts, relating to an air tightness testing tool for air duct assemblies. Background Technology

[0002] Vehicle air ducts are an indispensable core component in automobile manufacturing. Their functions extend beyond guiding airflow; they also involve regulating the in-vehicle environment, optimizing aerodynamics, ensuring system sealing, and achieving various additional performance characteristics. As a key component of automotive air conditioning, ventilation, and aerodynamic design, the performance of vehicle air ducts directly impacts driving comfort, energy efficiency, and overall vehicle safety and environmental friendliness.

[0003] As the "blood vessels" of an automotive air system, the design and manufacturing of vehicle air ducts require comprehensive consideration of functionality, lightweighting, durability, and environmental friendliness. With technological advancements, air ducts are evolving from traditional single-function systems towards intelligent, integrated, and high-performance designs. The application of key technologies such as airtightness testing and rapid cooling processes further enhances their importance in vehicle manufacturing. In the future, air duct design will place greater emphasis on synergistic optimization with the overall vehicle system to meet increasingly stringent performance and environmental standards.

[0004] Air duct tightness testing is a crucial step in verifying its sealing performance. It aims to ensure that no air leakage occurs during operation, thereby maintaining air conditioning system efficiency, reducing noise, and ensuring a comfortable in-vehicle environment. It ensures that the air duct remains sealed under high temperature, pressure changes, or vibration conditions to prevent refrigerant or cool air from escaping.

[0005] Most vehicle air ducts are designed with complex geometric shapes, often featuring irregular structures (such as curved surfaces, bifurcations, and branch channels) to adapt to the interior space layout and functional requirements of vehicles. However, they generally present problems such as inconvenience in use and operation during inspection and processing. Utility Model Content

[0006] One objective of this invention is to provide a new technical solution for a duct assembly airtightness testing tool.

[0007] According to a first aspect of the present invention, an airtightness testing tool for a duct assembly is provided, comprising a base plate, a first mounting plate welded to one side of the base plate, a testing housing fixedly mounted on the upper part of the base plate, a cover attached to the upper end of the testing housing, an adjustment mechanism movably connected to the front end of the first mounting plate, the other end of the adjustment mechanism being movably connected to the cover, and a sealing plate fixedly provided at the lower end of the cover, the sealing plate being sealed against the inner wall side of the testing housing.

[0008] Optionally, the adjustment mechanism includes a first L-shaped plate movably connected to the front end of the first mounting plate via a first pin, and the front end of the first L-shaped plate is movably connected to two second L-shaped plates via a second pin.

[0009] Optionally, a first connector is fixedly provided at the center of the cover, and the other ends of the two second L-shaped plates are fixedly connected to the inside of the first connector.

[0010] Optionally, a second connector is fixedly provided at the upper end of the first L-shaped plate, a third connector is fixedly provided at the lower end of the first L-shaped plate, and a fourth connector is fixedly provided at the front end of the first L-shaped plate.

[0011] Optionally, a second mounting plate is welded to the upper end of the first mounting plate, and a servo electric cylinder is fixedly mounted on the upper end of the second mounting plate. The end of the telescopic rod of the servo electric cylinder is connected to a fifth connector, and the fifth connector is movably connected to the second connector via a third pin.

[0012] Optionally, a first crank rod is movably connected to the third pin on each side of the first mounting plate, and a connecting member is movably connected to the other end of the first crank rod via a connecting pin. One end of the connecting member is movably connected to both sides of the third connector via a fourth pin.

[0013] Optionally, the front end of the connector is movably connected to a second crank rod via a connecting pin, and the two second crank rods on both sides are movably connected between the fourth connectors on both sides via a fifth pin.

[0014] The beneficial effects of this utility model are:

[0015] In use, this utility model allows for the placement of the air duct through the detection housing and cover, facilitating the placement and airtightness testing of air ducts of different shapes. Water is filled inside the air duct, and the ends of the air duct are sealed. Then, the air duct is placed inside the detection housing and cover, a vacuum is drawn, and the air duct is checked for leaks to test its airtightness. The design of the detection housing and cover can accommodate air ducts of different shapes, improving the convenience and speed of airtightness testing.

[0016] This utility model achieves opening and closing control of the cover through an adjustment mechanism. Specifically, the first L-shaped plate is pulled by a servo electric cylinder, which enables the lifting and lowering adjustment of the cover. The first L-shaped plate pulls and adjusts the second L-shaped plate through a first crank rod, a connecting piece, and a second crank rod, thereby controlling the cover to change from a horizontal to a vertical state. This facilitates the opening and closing control of the cover, allowing the air duct to be placed and stored inside the detection housing and the cover.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of a duct assembly airtightness testing tool in one embodiment;

[0020] Figure 2 This is a partial structural schematic diagram of an airtightness testing tool for a duct assembly in one embodiment;

[0021] Figure 3 This is a top view of the adjustment mechanism of an airtightness testing tool for an air duct assembly in one embodiment;

[0022] Figure 4 This is a bottom view of the adjustment mechanism of an airtightness testing tool for an air duct assembly in one embodiment.

[0023] The diagram shows the following: 1. Base plate; 2. First mounting plate; 3. Adjustment mechanism; 301. Second L-shaped plate; 302. Second pin; 303. First L-shaped plate; 304. Second connector; 305. Servo electric cylinder; 306. Fifth connector; 307. Fourth connector; 308. Fifth pin; 309. First crankshaft; 310. Connector; 311. Second crankshaft; 312. Third connector; 313. First pin; 314. Third pin; 315. Fourth pin; 316. Connecting pin; 4. Second mounting plate; 5. Detection housing; 6. Cover; 7. Sealing plate; 8. First connector. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] like Figures 1-4 As shown, an airtightness testing tool for a duct assembly includes a base plate 1, a first mounting plate 2 welded to one side of the base plate 1, a testing housing 5 fixedly mounted on the upper part of the base plate 1, a cover 6 attached to the upper end of the testing housing 5, an adjustment mechanism 3 movably connected to the front end of the first mounting plate 2, the other end of the adjustment mechanism 3 movably connected to the cover 6, and a sealing plate 7 fixedly provided at the lower end of the cover 6, the sealing plate 7 sealingly fitting against the inner wall of the testing housing 5.

[0029] In this embodiment, preferably, the adjustment mechanism 3 is provided with a first L-shaped plate 303 that is movably connected to the front end of the first mounting plate 2 via a first pin 313, and the front end of the first L-shaped plate 303 is movably connected to two second L-shaped plates 301 via a second pin 302.

[0030] It should be noted that the first L-shaped plate 303 is designed to be movably connected to the first mounting plate 2, so that the first L-shaped plate 303 can be pulled up and formed into a vertical state when pulled, and will not collide when rotating. The second L-shaped plate 301 is designed to be connected to the cover 6, so that the cover 6 can be raised when the first L-shaped plate 303 is rotated and pulled up, thereby realizing the opening and closing control between the cover 6 and the detection housing 5.

[0031] In this embodiment, preferably, a first connector 8 is fixedly provided at the center of the cover 6, and the other ends of the two second L-shaped plates 301 are fixedly connected to the inside of the first connector 8;

[0032] It should be noted that the first connector 8 is configured to enable the second L-shaped plate 301 to be movably connected, so that the second L-shaped plate 301 can be connected to the cover 6, which facilitates the control of the cover 6 and the opening and closing control of the cover 6.

[0033] In this embodiment, preferably, a second connector 304 is fixedly provided at the upper end of the first L-shaped plate 303, a third connector 312 is fixedly provided at the lower end of the first L-shaped plate 303, and a fourth connector 307 is fixedly provided at the front end of the first L-shaped plate 303.

[0034] It should be noted that the second connector 304, the third connector 312 and the fourth connector 307 are designed to enable the installation and connection of other structures, so as to maintain the balance and stability of the cover 6 during the opening and closing process.

[0035] In this embodiment, preferably, a second mounting plate 4 is welded to the upper end of the first mounting plate 2, and a servo electric cylinder 305 is fixedly mounted on the upper end of the second mounting plate 4. The end of the telescopic rod of the servo electric cylinder 305 is connected to a fifth connector 306, and the fifth connector 306 is movably connected to the second connector 304 through a third pin 314.

[0036] It should be noted that the second mounting plate 4 is used to fix the servo cylinder 305, maintain the operational stability of the servo cylinder 305, and is movably connected to the second connector 304 through the fifth connector 306, so that the servo cylinder 305 can pull the first L-shaped plate 303, so that the first L-shaped plate 303 can rotate vertically.

[0037] In this embodiment, preferably, the first mounting plate 2 has a first crank rod 309 movably connected to the third pin 314 on both sides, and the other end of the first crank rod 309 is movably connected to a connector 310 via a connecting pin 316. One end of the connector 310 is movably connected to both sides of the third connector 312 via a fourth pin 315. The front end of the connector 310 is movably connected to a second crank rod 311 via a connecting pin 316, and the two second crank rods 311 are movably connected between the four connectors 307 on both sides via a fifth pin 308.

[0038] It should be noted that the first crank rod 309, the connecting piece 310, and the second crank rod 311 are used to pull the second L-shaped plate 301. That is, when the first L-shaped plate 303 is rotated vertically, the stability of the second L-shaped plate 301 is maintained by the first crank rod 309, the connecting piece 310, and the second crank rod 311, so that the cover 6 can be changed from a horizontal state to a vertical state, which facilitates the insertion or removal of the air duct and the detection housing 5.

[0039] The specific operational procedures for this application are as follows:

[0040] When in use, firstly, the servo cylinder 305 in the adjustment mechanism 3 is activated. The servo cylinder 305 pulls the first L-shaped plate 303, enabling the first L-shaped plate 303 to be pulled. Then, the first pin 313 is used as a positioning point to achieve movement and rotation. When the first L-shaped plate 303 moves and rotates, the first crank 309, the second crank 311 and the connecting piece 310 pull the second L-shaped plate 301, so that the cover 6 can maintain balance and stability when it is pulled up, and will not shake due to gravity, causing collision damage.

[0041] After opening the cover 6, fill the inside of the vehicle air duct with clean water and seal the port of the air duct. Then place the air duct inside the detection housing 5. Then, restart the servo cylinder 305 in the adjustment mechanism 3 so that the servo cylinder 305 can lower the cover 6, so that the cover 6 and the detection housing 5 are closely connected. The sealing plate 7 at the bottom of the cover 6 achieves a sealed connection with the detection housing 5, improving the sealing performance. Then, evacuate the inside of the detection housing 5. After evacuation, maintain the vacuum environment inside the detection housing 5 for five to ten minutes. Finally, start the servo cylinder 305 in the adjustment mechanism 3 to open the cover 6. Then, take out the air duct and observe whether there are any water leaks. If there are water leaks, the air duct has poor sealing performance. If there are no water leaks, the air duct has good sealing performance.

[0042] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A tool for testing the air tightness of a duct assembly, characterized in that: Includes a base plate (1), a first mounting plate (2) welded to one side of the base plate (1), a detection housing (5) fixedly mounted on the upper part of the base plate (1), a cover (6) attached to the upper end of the detection housing (5), an adjustment mechanism (3) movably connected to the front end of the first mounting plate (2), the other end of the adjustment mechanism (3) movably connected to the cover (6), and a sealing plate (7) fixedly provided at the lower end of the cover (6), the sealing plate (7) sealingly attached to the inner wall side of the detection housing (5).

2. The air tightness testing tool for a duct assembly according to claim 1, characterized in that: The adjustment mechanism (3) is provided with a first L-shaped plate (303) that is movably connected to the front end of the first mounting plate (2) via a first pin (313), and the front end of the first L-shaped plate (303) is movably connected to two second L-shaped plates (301) via a second pin (302).

3. The air tightness testing tool for a duct assembly according to claim 2, characterized in that: The center of the cover (6) is fixedly provided with a first connector (8), and the other ends of the two second L-shaped plates (301) are fixedly connected to the inside of the first connector (8).

4. The air tightness testing tool for a duct assembly according to claim 3, characterized in that: The upper end of the first L-shaped plate (303) is fixedly provided with a second connector (304), the lower end of the first L-shaped plate (303) is fixedly provided with a third connector (312), and the front end of the first L-shaped plate (303) is fixedly provided with a fourth connector (307).

5. The air tightness testing tool for a duct assembly according to claim 4, characterized in that: A second mounting plate (4) is welded to the upper end of the first mounting plate (2). A servo electric cylinder (305) is fixedly mounted on the upper end of the second mounting plate (4). A fifth connector (306) is connected to the end of the telescopic rod of the servo electric cylinder (305). The fifth connector (306) is movably connected to the second connector (304) through a third pin (314).

6. The air tightness testing tool for a duct assembly according to claim 5, characterized in that: The first mounting plate (2) has a first crank rod (309) movably connected to the third pin (314) on both sides. The other end of the first crank rod (309) is connected to a connector (310) via a connecting pin (316). One end of the connector (310) is movably connected to both sides of the third connector (312) via a fourth pin (315).

7. The air tightness testing tool for a duct assembly according to claim 6, characterized in that: The front end of the connector (310) is movably connected to the second crank rod (311) via a connecting pin (316), and the second crank rods (311) on both sides are movably connected between the fourth connectors (307) on both sides via a fifth pin (308).

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