Automobile air conditioner leak detection device
By designing a limiting component with a movable rod and spring structure, the problem of inconvenient installation of air conditioning pipes in the water storage tank was solved, enabling convenient inspection of air conditioning pipes and improving inspection efficiency.
Patent Information
- Application Number
- CN202520137113.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In existing automotive air conditioning pipe testing devices, the position of the limiting post in the water storage tank is fixed, which makes it inconvenient to lay the air conditioning pipe in the water storage tank, especially for air conditioning pipes that are too long or made of hard materials.
An automotive air conditioning leak detection device was designed, comprising a water storage tank, connecting lugs, limiting guide rings, and limiting components. The limiting component uses a movable rod and spring structure to move the limiting post upward within the water storage tank, facilitating the installation of the air conditioning pipe. Furthermore, the guiding arc block and guiding arc ring simplify the installation process of the air conditioning pipe.
This allows for convenient installation of air conditioning pipes within the water storage tank, simplifies testing procedures, and improves the efficiency of testing the airtightness of air conditioning pipes.
Smart Images

Figure CN223870262U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an automotive air conditioning leak detection device. Background Technology
[0002] Leak detection is a crucial step in the production of automotive air conditioning pipes. To ensure accurate leak detection results, specialized leak detection equipment is needed to guarantee the seal between the air conditioning pipe and the intake pipe. Existing automotive air conditioning pipe testing equipment has the following problems: Current equipment typically inflates one end of the air conditioning pipe and then immerses the inflated pipe in a water tank to observe for air bubbles. However, when the air conditioning pipe is too long or made of a hard material, it cannot be properly submerged for testing, limiting the testing process.
[0003] In existing technology patent CN212779781U, a detection device for leak detection of automotive air conditioning pipes is disclosed. This device uses a limiting guide ring, a limiting post, and a water reservoir. One end of the air conditioning pipe is connected to the air inlet, and the other end passes through the limiting guide ring and extends into the water reservoir. It then passes through the lower end of the limiting post, exits upwards, passes through another limiting guide ring, and passes through the device. Afterwards, clean water is poured into the water reservoir to submerge the air conditioning pipe. The air inlet is opened to inflate the air conditioning pipe. The device is then moved along the air conditioning pipe, passing through each section of the pipe to perform airtightness testing. This device is miniaturized and easy to use, and can also test air conditioning pipes of a certain length and hardness that are difficult to place in a water reservoir for testing, increasing the device's adaptability.
[0004] However, in the aforementioned prior art patents, the position of the limiting post in the water storage tank is fixed, and it is inconvenient for the air conditioning pipe to be installed below the limiting post in the water storage tank, making it relatively inconvenient to lay the air conditioning pipe in the water storage tank. Utility Model Content
[0005] The purpose of this utility model is to provide an automotive air conditioning leak detection device, which aims to solve the technical problems in the prior art where the position of the limiting post in the water storage tank is fixed, the air conditioning pipe is inconvenient to pass under the limiting post in the water storage tank, and the air conditioning pipe is relatively inconvenient to lay in the water storage tank.
[0006] To achieve the above objectives, this utility model employs an automotive air conditioning leak detection device, comprising a water reservoir, two connecting ears, two limiting guide rings, and a limiting assembly. Both connecting ears are fixedly connected to the water reservoir and are located on the outer wall of the water reservoir. Each limiting guide ring is fixedly connected to its corresponding connecting ear and is located above the connecting ear. The limiting assembly includes a fixing frame, a compression arc block, a connecting plate, a spring, a movable rod, a mounting frame, a first limiting post, and a trapezoidal block. The fixing frame is fixedly connected to the water reservoir, and... Located above the water storage tank, the movable rod is movably connected to the fixed frame and passes through the fixed frame. The connecting plate is fixedly connected to one end of the movable rod, and the mounting frame is fixedly connected to the other end of the movable rod. The two ends of the spring are fixedly connected to the connecting plate and the fixed frame respectively, and are sleeved on the outside of the movable rod. The extrusion arc block is fixedly connected to the connecting plate and is located on the outer side wall of the connecting plate. Both ends of the movable rod are rotatably connected to the mounting frame, and the trapezoidal block is located above the fixed frame.
[0007] The limiting component further includes a slider, the fixing frame has a sliding groove, the slider is slidably connected to the fixing frame and located in the sliding groove, and the trapezoidal block is fixedly connected to the slider and located above the slider.
[0008] The limiting component further includes a support frame and a second limiting post. The support frame is fixedly connected to the water storage tank and is located on the bottom wall of the water storage tank. The second limiting post is rotatably connected to the support frame and is located inside the support frame.
[0009] The limiting component further includes a guide arc block, which is fixedly connected to the trapezoidal block and located on the outer wall of the trapezoidal block.
[0010] The automotive air conditioning leak detection device also includes multiple guide arc rings, each of which is fixedly connected to the limiting guide ring and is located on the outer side wall of the limiting guide ring.
[0011] This utility model discloses an automotive air conditioning leak detection device. When detecting leaks in the air conditioning pipe, the trapezoidal block is first moved to contact the extrusion arc block. The extrusion arc block, under force, causes the connecting plate to move upward, placing the trapezoidal block below the connecting plate. The connecting plate then moves the movable rod upward within the fixed frame, simultaneously stretching the spring. The mounting frame causes the first limiting post to move upward within the water reservoir. The air conditioning pipe is then placed in the water reservoir, positioned below the first limiting post. Next, the trapezoidal block is moved out from below the connecting plate, and the spring force causes the mounting frame to quickly reset, with the first limiting post tightly against the top of the air conditioning pipe. Finally, clean water is poured into the water reservoir, submerging the air conditioning pipe. The air inlet is opened to inflate the air conditioning pipe. The device is then moved along the air conditioning pipe, passing through each section, to perform an airtightness test. This method allows for convenient placement of the air conditioning pipe within the water reservoir, simplifying operation and facilitating air conditioning pipe testing. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of the automotive air conditioning leak detection device of this utility model.
[0014] Figure 2 This is a side view of the structure of the automotive air conditioning leak detection device of this utility model.
[0015] Figure 3 This is a front view of the structure of the automotive air conditioning leak detection device of this utility model.
[0016] Figure 4 This is the utility model Figure 3 A cross-sectional view of the AA line structure.
[0017] 101-Water storage tank, 102-Connecting ear, 103-Limiting guide ring, 104-Fixing frame, 105-Extrusion arc block, 106-Connecting plate, 107-Spring, 108-Modular rod, 109-Mounting frame, 110-First limiting post, 111-Trapezoidal block, 112-Slider, 113-Sliding groove, 114-Support frame, 115-Second limiting post, 116-Guiding arc block, 117-Guiding arc ring. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0019] Please see Figures 1-4 This utility model provides an automotive air conditioning leak detection device, including a water storage tank 101, two connecting ears 102, two limiting guide rings 103, and a limiting assembly. The two connecting ears 102 are fixedly connected to the water storage tank 101 and are located on the outer wall of the water storage tank 101. Each limiting guide ring 103 is fixedly connected to the corresponding connecting ear 102 and is located above the connecting ear 102. The limiting assembly includes a fixing frame 104, a compression arc block 105, a connecting plate 106, a spring 107, a movable rod 108, a mounting bracket 109, a first limiting post 110, and a trapezoidal block 111. The fixing frame 104 is fixedly connected to the water storage tank 101 and is located on the outer wall of the water storage tank 101. Above the water storage tank 101, the movable rod 108 is movably connected to the fixed frame 104 and passes through the fixed frame 104. The connecting plate 106 is fixedly connected to one end of the movable rod 108, and the mounting frame 109 is fixedly connected to the other end of the movable rod 108. The two ends of the spring 107 are fixedly connected to the connecting plate 106 and the fixed frame 104 respectively, and are sleeved on the outside of the movable rod 108. The extrusion arc block 105 is fixedly connected to the connecting plate 106 and is located on the outer side wall of the connecting plate 106. Both ends of the movable rod 108 are rotatably connected to the mounting frame 109. The trapezoidal block 111 is disposed above the fixed frame 104.
[0020] In this embodiment, when performing leak detection on the air conditioning pipe, the trapezoidal block 111 is first moved to contact the extrusion arc block 105. The extrusion arc block 105, under force, causes the connecting plate 106 to move upward, so that the trapezoidal block 111 is located below the connecting plate 106. The connecting plate 106 causes the movable rod 108 to move upward in the fixed frame 104. At the same time, the spring 107 is stretched, and the mounting bracket 109 causes the first limiting post 110 to move upward in the water storage tank 101. Then, the air conditioning pipe is laid in the water storage tank 101 and positioned at the first limiting post 110. Below 10, the trapezoidal block 111 is then moved out from under the connecting plate 106. The spring force of the spring 107 drives the mounting bracket 109 to quickly reset. The first limiting post 110 is close to the top of the air conditioning pipe. Finally, clean water is poured into the water storage tank 101 and submerges the air conditioning pipe. The air inlet is opened to inflate the air conditioning pipe. The device is then moved along the air conditioning pipe, passing through each part of the air conditioning pipe, to perform an airtightness test on the air conditioning pipe. In this way, the air conditioning pipe can be conveniently laid out in the water storage tank 101. The operation is simple and it is beneficial for testing the air conditioning pipe.
[0021] Furthermore, the limiting component also includes a slider 112, the fixing frame 104 has a sliding groove 113, the slider 112 is slidably connected to the fixing frame 104 and located in the sliding groove 113, and the trapezoidal block 111 is fixedly connected to the slider 112 and located above the slider 112.
[0022] In this embodiment, by setting the slider 112, the slider 112 slides in the sliding groove 113 of the fixing frame 104, and the slider 112 limits the movement trajectory of the trapezoidal block 111, so that the trapezoidal block 111 is located below the connecting plate 106.
[0023] Furthermore, the limiting component also includes a support frame 114 and a second limiting post 115. The support frame 114 is fixedly connected to the water storage tank 101 and is located on the bottom wall of the water storage tank 101. The second limiting post 115 is rotatably connected to the support frame 114 and is located inside the support frame 114.
[0024] In this embodiment, the support frame 114 is fixed to the bottom of the water storage tank 101, and the second limiting post 115 is movably arranged inside the support frame 114. By placing the air conditioning pipe between the first limiting post 110 and the second limiting post 115, it is convenient to pull the air conditioning pipe.
[0025] Furthermore, the limiting component also includes a guide arc block 116, which is fixedly connected to the trapezoidal block 111 and located on the outer side wall of the trapezoidal block 111.
[0026] In this embodiment, by providing the guide arc block 116 on the outside of the trapezoidal block 111, the trapezoidal block 111 uses the guide arc block 116 to push the extrusion arc block 105, so that the trapezoidal block 111 is located below the connecting plate 106.
[0027] Furthermore, the automotive air conditioning leak detection device also includes a plurality of guide arc rings 117, each of which is fixedly connected to the limiting guide ring 103 and is located on the outer side wall of the limiting guide ring 103.
[0028] In this embodiment, by providing the guide arc 117 on both sides of the limiting guide ring 103, the air conditioning pipe can easily pass through the limiting guide ring 103 via the guide arc 117, making the operation simple.
[0029] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A car air conditioning leak detection device, comprising a water reservoir, two connecting lugs, and two limiting guide rings, wherein both connecting lugs are fixedly connected to the water reservoir and are located on the outer side wall of the water reservoir, and each limiting guide ring is fixedly connected to a corresponding connecting lug and is located above the connecting lug, characterized in that, It also includes a limiting assembly, which comprises a fixed frame, a pressing arc block, a connecting plate, a spring, a movable rod, a mounting frame, a first limiting post, and a trapezoidal block. The fixed frame is fixedly connected to the water storage tank and is located above the water storage tank. The movable rod is movably connected to the fixed frame and passes through the fixed frame. The connecting plate is fixedly connected to one end of the movable rod. The mounting frame is fixedly connected to the other end of the movable rod. The two ends of the spring are fixedly connected to the connecting plate and the fixed frame respectively and are sleeved on the outside of the movable rod. The pressing arc block is fixedly connected to the connecting plate and is located on the outer side wall of the connecting plate. Both ends of the movable rod are rotatably connected to the mounting frame. The trapezoidal block is located above the fixed frame.
2. The automotive air conditioning leak detection device as described in claim 1, characterized in that, The limiting component further includes a slider, the fixing frame has a sliding groove, the slider is slidably connected to the fixing frame and located in the sliding groove, and the trapezoidal block is fixedly connected to the slider and located above the slider.
3. The automotive air conditioning leak detection device as described in claim 2, characterized in that, The limiting component further includes a support frame and a second limiting post. The support frame is fixedly connected to the water storage tank and is located on the bottom wall of the water storage tank. The second limiting post is rotatably connected to the support frame and is located inside the support frame.
4. The automotive air conditioning leak detection device as described in claim 3, characterized in that, The limiting component also includes a guide arc block, which is fixedly connected to the trapezoidal block and located on the outer wall of the trapezoidal block.
5. The automotive air conditioning leak detection device as described in claim 1, characterized in that, The automotive air conditioning leak detection device also includes multiple guide arc rings, each of which is fixedly connected to the limiting guide ring and is located on the outer side wall of the limiting guide ring.