Immersion test device for oxygen sensor
By designing the threaded connecting pipe and circulating water supply structure of the oxygen sensor immersion test device, the problems of sensor chip damage and wire short circuit are solved, and efficient and accurate oxygen sensor detection is achieved.
Patent Information
- Application Number
- CN202422491757.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-15
AI Technical Summary
During the immersion experiment, the oxygen sensor is easily damaged by the chip being exposed, and the wire connections are prone to short-circuiting, resulting in detection failure.
An oxygen sensor immersion test device was designed, and the sensor was fixed using a rectangular array threaded connecting pipe in the sink to prevent the chip from contacting the liquid. Multiple experiments were performed through the circulating water supply structure, and the support arm supports the wire to avoid short circuit.
Effectively protect the sensor chip, prevent damage, improve detection accuracy and efficiency, ensure that the wires do not come into contact with liquid, and reduce the risk of short circuit.
Smart Images
Figure CN223154303U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to the technical field of oxygen sensors, and specifically is a device for conducting an immersion test on an oxygen sensor. Background Technique
[0002] The oxygen sensor is installed on an automobile engine. Generally, the engine is located at the bottom of the automobile. During the driving of the automobile, it is inevitable to encounter small rivers or small accumulations of water. When the vehicle wades through water at the bottom, the sensor has a risk of being immersed. If water enters the sensor and causes a short circuit in the wires in the sensor, the sensor will be damaged. Therefore, the oxygen sensor needs to undergo an immersion test.
[0003] However, in practice, it has been noted that a part of the detection position of the chip of the oxygen sensor is directly exposed at one end of the sensor housing. Before detection, a waterproof tool needs to be used for shielding to prevent damage to the chip after immersion. Since the immersion test requires the sensor to be completely immersed in water, even with a waterproof tool, it is impossible to achieve complete sealing, and the wire connection between the sensor and the detection device is prone to slipping into the liquid and causing a short circuit. Therefore, the sensor is very likely to be damaged during the detection process. Content of the Utility Model
[0004] The purpose of the utility model is to provide a device for conducting an immersion test on an oxygen sensor. The sensor is supported by threaded connecting pipes arranged in a rectangular array in a water tank, and the chip is prevented from contacting the liquid, playing a protective role. The circulating water supply structure at the bottom can provide continuous multiple immersion tests, improving the accuracy of test data. To solve the technical problems proposed in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A device for conducting an immersion test on an oxygen sensor includes a cabinet housing. The side of the cabinet housing is provided with cabinet doors in a rectangular array. A test rack assembly is also arranged in the cabinet housing, and the bottom of the test rack assembly is connected to a water supply assembly through a pipeline;
[0007] A support plate and a reinforcement plate are also fixedly connected in the cabinet housing. Among them, the water supply assembly and the test rack assembly are respectively located at both ends of the support plate, and holes corresponding to the test rack assembly are opened in the support plate;
[0008] The support plate and the reinforcement plate are arranged perpendicular to each other, and a signal converter located above the water tank is also fixedly connected to the side of the reinforcement plate.
[0009] As a further technical solution of the utility model, the test rack assembly includes a hollow support. The hollow support is integrally U-shaped, and both ends of the hollow support are bent outward. The bent positions are fixedly connected to the side of the support plate through bolts.
[0010] As a further technical solution of the utility model, a water tank is fixedly connected to the top of the hollowed-out support, and threaded connecting pipes are arranged at the bottom of the water tank in a rectangular array, and internal threads are provided inside the threaded connecting pipes;
[0011] The inside of the threaded connecting pipe is vertically penetrated, and a sealed threaded sealing head is threadedly connected to the top of the threaded connecting pipe.
[0012] As a further technical solution of the utility model, the water supply assembly includes a protective shell located below the support plate, a water tank is embedded in the protective shell, a water supply pump fixedly connected to the protective shell is arranged on the side of the water tank, one end of the water supply pump is communicated with the water tank, and the other end is communicated with the bottom of the water tank through a pipeline.
[0013] As a further technical solution of the utility model, a driving motor is arranged above the water pump, the driving motor is fixedly connected to the upper part of the protective shell, and the end part of the driving motor penetrates through the protective shell and is in transmission connection with the water supply pump.
[0014] As a further technical solution of the utility model, a return water pipeline is further fixedly connected above the water tank, one end of the return water pipeline is fixedly connected to the water tank, the other end is communicated with the bottom of the water tank through a pipeline, and a valve is further fixedly connected to the return water pipeline.
[0015] As a further technical solution of the utility model, the signal converter includes a U-shaped fixing seat fixedly connected to the side of the reinforcing plate, a support arm is movably connected to the side of the U-shaped fixing seat, and a metal shell is fixedly connected to the side of the support arm far away from the U-shaped fixing seat.
[0016] As a further technical solution of the utility model, a signal conversion module is arranged in the metal shell, and an end cover is fixedly connected to the end of the metal shell, and a spring terminal row connected to the sensor wire is installed on the side of the end cover.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] In this utility model, the threaded connecting pipes arranged inside the water tank facilitate the fixation of the oxygen sensors to the inner side of the water tank. Moreover, the threaded connecting pipes arranged in a rectangular array can fix multiple sensors for detection, shortening the disassembly time of the sensors, improving efficiency, and the chip part of the oxygen sensor faces downward and is located in the threaded connecting pipe, preventing damage to the sensor chip after immersion; in this utility model, the liquid in the water tank is sent into the water tank through the water pump at the end of the driving motor, and then the liquid can return to the water tank through the pipeline to form a cycle, enabling multiple immersions of the sensor to improve the detection accuracy, and a liquid level gauge is provided on the side of the protective shell to facilitate the control of the water volume in the water tank; in this utility model, the spring terminal block arranged on the side of the end cover facilitates the connection between the sensor and the detection module by the staff, and the support arm supports the entire metal shell, so that the wires of the sensor are perpendicular upward, preventing the wires from falling into the immersion liquid and causing a short circuit, further improving the detection accuracy. Description of the Drawings
[0019] Figure 1 is a schematic structural diagram of the utility model in the use state.
[0020] Figure 2 is in the utility model Figure 1 bottom structural diagram.
[0021] Figure 3 is in the utility model Figure 1 internal structural diagram.
[0022] Figure 4 is in the utility model Figure 3 partial enlarged schematic diagram.
[0023] Figure 5 is in the utility model Figure 3 another perspective view.
[0024] Figure 6 is a schematic position structure diagram of the water supply component, the inspection rack component and the signal converter in the utility model.
[0025] Figure 7 is a three-dimensional structural diagram of the inspection rack component in the utility model.
[0026] Figure 8 is in the utility model Figure 7 partial enlarged schematic diagram.
[0027] Figure 9 is a three-dimensional structural diagram of the water supply component in the utility model.
[0028] Figure 10 is a three-dimensional structural diagram of the signal converter in the utility model.
[0029] In the figure:
[0030] Cabinet body shell 1, detection module 2, universal wheel 3, cabinet door 4, water supply assembly 5, protective shell 51, liquid level gauge 52, drain pipe 53, water tank 54, drive motor 55, return water pipe 56, valve 57, inspection rack assembly 6, hollowed-out support 61, water tank 62, threaded connection pipe 63, threaded sealing head 64, signal converter 7, metal shell 71, end cover 72, spring terminal block 73, support arm 74, U-shaped fixing seat 75, support plate 8, reinforcement plate 9. Specific implementation mode
[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0032] Please refer to Figures 1-10 , an oxygen sensor immersion test device provided by an embodiment of the present invention includes a cabinet body shell 1. Cabinet doors 4 are arranged on the side of the cabinet body shell 1 in a rectangular array. An inspection rack assembly 6 is also arranged in the cabinet body shell 1. The bottom of the inspection rack assembly 6 is connected to a water supply assembly 5 through a pipeline;
[0033] A support plate 8 and a reinforcement plate 9 are fixedly connected in the cabinet body shell 1. Among them, the water supply assembly 5 and the inspection rack assembly 6 are respectively located at both ends of the support plate 8. Holes corresponding to the inspection rack assembly 6 are opened in the support plate 8;
[0034] The support plate 8 and the reinforcement plate 9 are arranged perpendicular to each other, and a signal converter 7 located above the water tank 62 is fixedly connected to the side of the reinforcement plate 9.
[0035] In this embodiment, the inspection rack assembly 6 includes a hollowed-out support 61. The hollowed-out support 61 is integrally U-shaped, and both ends of the hollowed-out support 61 are bent outward. The bent positions are fixedly connected to the side of the support plate 8 through bolts.
[0036] Specifically, a water tank 62 is fixedly connected to the top of the hollowed-out support 61, and threaded connection pipes 63 are arranged on the bottom of the water tank 62 in a rectangular array. Internal threads are opened inside the threaded connection pipes 63;
[0037] The inside of the threaded connection pipe 63 is vertically penetrated up and down, and a sealed threaded sealing head 64 is threadedly connected to the top of the threaded connection pipe 63.
[0038] In this embodiment, the water supply assembly 5 includes a protective housing 51 located below the support plate 8. A water tank 54 is embedded in the protective housing 51. A water supply pump fixedly connected to the protective housing 51 is provided on the side of the water tank 54. One end of the water supply pump communicates with the water tank 54, and the other end communicates with the bottom of the water trough 62 through a pipeline.
[0039] Furthermore, a driving motor 55 is provided above the water pump. The driving motor 55 is fixedly connected to the upper part of the protective housing 51, and the end of the driving motor 55 penetrates through the protective housing 51 and is in transmission connection with the water supply pump.
[0040] Specifically, a return water pipeline 56 is also fixedly connected above the water tank 54. One end of the return water pipeline 56 is fixedly connected to the water tank 54, and the other end communicates with the bottom of the water trough 62 through a pipeline. A valve 57 is also fixedly connected to the return water pipeline 56.
[0041] In this embodiment, the signal converter 7 includes a U-shaped fixing seat 75 fixedly connected to the side of the reinforcing plate 9. A support arm 74 is movably connected to the side of the U-shaped fixing seat 75. A metal housing 71 is fixedly connected to the side of the support arm 74 away from the U-shaped fixing seat 75.
[0042] In this embodiment, a signal conversion module is provided in the metal housing 71. An end cover 72 is fixedly connected to the end of the metal housing 71. A spring terminal block 73 connected to a sensor wire is installed on the side of the end cover 72.
[0043] By adopting the above technical solution, remove the thread sealing head 64 above any one of the threaded connecting pipes 63, fix the sensor to be detected to the threaded connecting pipe 63 by threading, and insert the exposed end of the chip downward into the threaded connecting pipe 63. Then, the driving motor 55 drives the water supply pump below to work, and the liquid in the water tank 54 is sent into the water trough 62 through a pipeline, and the liquid completely submerges the sensor. The DC power supply inside the detection module 2 supplies power to the sensor through the spring terminal block 73, and the feedback signal of the sensor is transmitted to the detection module 2 through the spring terminal block 73 and the signal conversion module, and the detection module 2 analyzes various values of the sensor.
[0044] In this embodiment, a control module, a display module, and a DC power supply are provided in the detection module 2. The DC power supply is electrically connected to any two interfaces among the control module, the display module, and the spring terminal block 73 through wires respectively, and the sensor to be detected is powered by the DC power supply.
[0045] In this embodiment, the control module is electrically connected to the display module and the signal conversion module in the metal housing 71. The signal conversion module is electrically connected to the spring terminal block 73 through a wire. The sensor transmits the feedback signal to the signal conversion module through the spring terminal block 73 for conversion. The converted signal is transmitted to the control module for analysis and finally displayed on the display module.
[0046] In this embodiment, a liquid level gauge 52 is fixedly connected to the side of the protective housing 51, and the detection head of the liquid level gauge 52 penetrates through the protective housing 51 and extends to the inner bottom of the water tank 54. The liquid level gauge 52 displays the liquid volume in the water tank 54, facilitating the control of the water volume in the water tank.
[0047] In this embodiment, an emptying pipe 53 is provided on the side of the protective housing 51. The emptying pipe 53 is fixedly connected to the protective housing 51, and the end of the emptying pipe 53 penetrates through the protective housing 51 and communicates with the water tank 54. A sealing end cap is also threadedly connected to the end of the emptying pipe 53. By opening the sealing end cap, the liquid in the water tank 54 is discharged through the emptying pipe 53 to regularly replace the liquid in the water tank 54.
[0048] In this embodiment, the end of the support arm 74 is inserted into the U-shaped fixing seat 75, and a positioning pin is provided at the connection between the support arm 74 and the U-shaped fixing seat 75. The end portions of the positioning pin penetrate through the support arm 74 and the U-shaped fixing seat 75 respectively. The other end of the support arm 74 can swing horizontally with respect to the metal housing 71 to adjust the position of the metal housing 71.
[0049] Specifically, the detection module 2 and the signal converter 7 are respectively located on both sides of the reinforcement plate 9. Among them, the signal converter 7 is located above the inspection rack assembly 6.
[0050] In this embodiment, universal wheels 3 are fixedly connected to the bottom of the cabinet housing 1 in a rectangular array, facilitating the movement of the position of the cabinet housing 1, and experiments can be carried out anywhere.
[0051] In this embodiment, an observation hole is provided in the cabinet door 4 in front of the inspection rack assembly 6, and a transparent observation window is embedded in the observation hole, which plays a protective role and improves the safety during use.
[0052] The working principle of the present utility model is as follows: When in use, first remove the thread sealing head 64 above any one of the threaded connecting pipes 63, fix the sensor to be detected to the threaded connecting pipe 63 by threads, set a sealing ring at the connection for sealing, and insert the exposed end of the chip downward into the threaded connecting pipe 63. Then drive the motor 55 to drive the water supply pump below to work, send the liquid in the water tank 54 into the water trough 62 through the pipeline, and the liquid completely submerges the sensor. The DC power supply inside the detection module 2 supplies power to the sensor through the spring terminal block 73, and the feedback signal of the sensor is transmitted to the detection module 2 through the spring terminal block 73 and the signal conversion module. The detection module 2 analyzes various values of the sensor; after the test is completed, open the valve 57, and the liquid inside the water trough 62 returns to the water tank 54 again through the pipeline and the return water pipeline 56, and the liquid level gauge 52 on the side of the protective shell 51 facilitates controlling the liquid level in the water tank 54 at any time.
[0053] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0054] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An oxygen sensor immersion test device, characterized in that: It includes a cabinet body shell (1), on the side of the cabinet body shell (1), cabinet doors (4) are arranged in a rectangular array, and an inspection rack assembly (6) is also provided in the cabinet body shell (1). The bottom of the inspection rack assembly (6) is connected to a water supply assembly (5) through a pipeline; A support plate (8) and a reinforcement plate (9) are also fixedly connected in the cabinet body shell (1). Among them, the water supply assembly (5) and the inspection rack assembly (6) are respectively located at both ends of the support plate (8), and holes corresponding to the inspection rack assembly (6) are opened in the support plate (8); The support plate (8) and the reinforcement plate (9) are arranged perpendicular to each other, and a signal converter (7) located above the water tank (62) is also fixedly connected to the side of the reinforcement plate (9).
2. The oxygen sensor immersion test device according to claim 1, characterized in that: The inspection rack assembly (6) includes a hollowed-out support (61). The hollowed-out support (61) is integrally U-shaped, and both ends of the hollowed-out support (61) are bent outward. The bent positions are fixedly connected to the side of the support plate (8) through bolts.
3. The oxygen sensor immersion test device according to claim 2, characterized in that: A water tank (62) is fixedly connected to the top of the hollowed-out support (61), and threaded connecting pipes (63) are arranged in a rectangular array at the bottom of the water tank (62). Internal threads are provided inside the threaded connecting pipes (63); The inside of the threaded connecting pipe (63) is vertically penetrated, and a sealed threaded sealing head (64) is threadedly connected to the top of the threaded connecting pipe (63).
4. The oxygen sensor immersion test device according to claim 1, wherein: The water supply assembly (5) includes a protective shell (51) located below the support plate (8). A water tank (54) is embedded in the protective shell (51). A water supply pump fixedly connected to the protective shell (51) is provided on the side of the water tank (54). One end of the water supply pump is communicated with the water tank (54), and the other end is communicated with the bottom of the water tank (62) through a pipeline.
5. The oxygen sensor immersion test device according to claim 4, characterized in that: A driving motor (55) is provided above the water pump. The driving motor (55) is fixedly connected to the top of the protective shell (51), and the end of the driving motor (55) penetrates through the protective shell (51) and is in transmission connection with the water supply pump.
6. The oxygen sensor immersion test device according to claim 5, characterized in that: A return water pipeline (56) is also fixedly connected above the water tank (54). One end of the return water pipeline (56) is fixedly connected to the water tank (54), and the other end is communicated with the bottom of the water tank (62) through a pipeline. A valve (57) is also fixedly connected to the return water pipeline (56).
7. The oxygen sensor immersion test device according to claim 1, characterized in that: The signal converter (7) includes a U-shaped fixing seat (75) fixedly connected to the side of the reinforcement plate (9). A support arm (74) is movably connected to the side of the U-shaped fixing seat (75). A metal shell (71) is fixedly connected to the side of the support arm (74) away from the U-shaped fixing seat (75).
8. The oxygen sensor immersion test device according to claim 7, characterized in that: A signal conversion module is provided in the metal shell (71), and an end cover (72) is fixedly connected to the end of the metal shell (71). A spring terminal block (73) connected to the sensor wire is installed on the side of the end cover (72).