Vehicle air detection device

Abstract

The utility model provides a vehicle air detection device. The vehicle air detection device comprises a shell; the sampling assembly and the detection assembly are installed in the shell, the sampling assembly comprises a sampling probe, and the sampling assembly is used for conveying gas to the detection assembly; the adjusting assembly is arranged in the shell, and the adjusting assembly comprises a first lead screw rotationally connected into the shell; the limiting sliding strip is fixedly connected into the shell; the sliding plate is slidably connected with the limiting sliding strip, and the sampling probe is mounted at the top end of the sliding plate; the connecting plate is in threaded connection with the first lead screw, and the connecting plate is fixedly connected with the sliding plate; the first motor is mounted in the shell; the first transmission part is used for transmission connection between the first motor and the first lead screw. The carrying convenience of the device is not affected, and the extension length of the sampling probe can be conveniently adjusted to improve the detection accuracy.

Description

Technical Field

[0001] This application relates to the field of air detection technology, and more particularly to a vehicle air detection device. Background Technology

[0002] Existing vehicle air quality testing devices generally come in two types: portable and stationary. Portable vehicle air quality testing devices have the advantages of small size, light weight, and easy portability. However, the sampling probe design of existing portable vehicle air quality testing devices is limited: the sampling probe generally does not extend out of the detector housing or the extension part is very small. This may result in the sampling point not reaching deep enough into the vehicle interior or exhaust pipe, making it impossible to accurately collect representative air samples. Utility Model Content

[0003] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a vehicle air detection device that does not affect the portability of the device and allows for easy adjustment of the extension length of the sampling probe, thereby improving the accuracy of the detection.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A vehicle air quality detection device, comprising:

[0006] case;

[0007] A sampling component and a detection component are installed inside a housing. The sampling component includes a sampling probe and is used to deliver gas to the detection component.

[0008] An adjustment assembly, disposed within the housing, includes:

[0009] The first lead screw is rotatably connected inside the housing;

[0010] The limiting slide bar is fixedly connected inside the housing;

[0011] A sliding plate is slidably connected to a limiting slide bar, and the sampling probe is installed on the top of the sliding plate;

[0012] A connecting plate is threadedly connected to the first lead screw, and the connecting plate is fixedly connected to the sliding plate;

[0013] The first motor is installed inside the housing;

[0014] The first transmission component is used for the transmission connection between the first motor and the first lead screw.

[0015] In one possible implementation, the sampling component further includes:

[0016] A sampling pump is installed inside the housing, and the exhaust port of the sampling pump is connected to the detection component;

[0017] The air delivery tube has one end connected to the sampling probe and the other end connected to the air inlet of the sampling pump.

[0018] In one embodiment, the vehicle air detection device further includes a wire coiling assembly. When the sampling probe extends out of the housing, the wire coiling assembly releases wire from the air guide tube. When the sampling probe retracts into the housing, the wire coiling assembly winds and retracts wire from the air guide tube.

[0019] In one embodiment, the coil assembly includes:

[0020] The coil assembly includes:

[0021] A pneumatic slip ring, comprising a rotating part and a stationary part, wherein the stationary part of the pneumatic slip ring is fixed inside a housing, and the end of the air guide tube away from the sampling probe is connected to the rotating part of the pneumatic slip ring, and the sampling pump is connected to the stationary part of the pneumatic slip ring;

[0022] A connecting rod, one end of which is fixed to the rotating part of the pneumatic slip ring, and the other end of which is rotatably connected to the housing, with the air guide tube wrapped around the outer circumference of the connecting rod;

[0023] The adjusting rod is rotatably connected inside the housing;

[0024] The second transmission component is used for the transmission connection between the connecting rod and the adjusting rod;

[0025] The first torsion spring has one end fixed to the adjusting rod and the other end fixed to the housing.

[0026] In one possible implementation,

[0027] Both the first and second transmission components use a synchronous belt drive structure for transmission.

[0028] In one possible implementation,

[0029] A fixed pulley is installed inside the housing. The air guide tube is in contact with the wheel surface of the fixed pulley. The fixed pulley is used to guide the air guide tube and keep the air guide tube between the fixed pulley and the sampling probe in a vertical state.

[0030] In one embodiment, the vehicle air detection device further includes a control circuit board, a battery pack, and a display screen and control buttons mounted on the front side of the housing.

[0031] In one embodiment, the housing includes an upper shell, a lower shell, a partition, and connecting screws; the partition is located between the upper shell and the lower shell, and the connecting screws are used to connect and fix the upper shell, the lower shell, and the partition; the display screen and the control buttons are installed on the front of the upper shell, the control circuit board is installed on the side of the partition near the upper shell, and the battery pack, detection component, adjustment component, and sampling component are installed inside the lower shell.

[0032] Compared with the prior art, this application has the following advantages:

[0033] This application, by setting up an adjustment component, utilizes the cooperation of a first motor, a first transmission component, a connecting plate, a sliding plate, a limiting slide bar, and a first lead screw to easily control the extension of the sampling probe out of the housing. The extension length can be adjusted according to actual needs, resulting in more accurate sampling points and thus improved detection accuracy. After use, the sampling probe can be retracted into the housing, facilitating device portability and preventing damage to the sampling probe. Overall, this application does not compromise the portability of the device and allows for easy adjustment of the sampling probe's extension length, improving detection accuracy.

[0034] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0035] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0036] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0037] Figure 1 This paper shows a schematic diagram of the overall structure of the sampling probe after it extends out of the housing according to an embodiment of this application;

[0038] Figure 2 An exploded view of the overall structure of an embodiment of this application is shown;

[0039] Figure 3 This application shows a schematic diagram of the structure of the lower shell and the components inside the lower shell according to an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of the coil component according to an embodiment of this application is shown.

[0041] Explanation of the labels in the diagram:

[0042] 100. Housing; 110. Upper housing; 120. Lower housing; 130. Partition plate; 140. Connecting screw; 200. Sampling assembly; 210. Sampling probe; 220. Sampling pump; 230. Air duct; 300. Detection assembly; 400. Adjustment assembly; 410. First lead screw; 420. Limiting slide bar; 430. Slide plate; 440. Connecting plate; 450. First motor; 460. First transmission component; 500. Coil assembly; 510. Connecting rod; 520. Adjusting rod; 530. Second transmission component; 540. Torsion spring; 550. Pneumatic slip ring; 551. Rotating part; 552. Stationary part; 600. Fixed pulley; 710. Control circuit board; 720. Battery pack; 730. Display screen; 740. Control button. Detailed Implementation

[0043] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] To better understand the design intent of this application, we will again introduce existing portable vehicle control testing instruments. Because excessively long probes increase the overall size and length, making them difficult to store and carry, they reduce the portability of the instrument and contradict the original design intent of portable testing instruments. Therefore, existing vehicle air testing devices have a mounting slot for the sampling probe on the top of the housing, ensuring that the sampling probe does not protrude from the housing, or only a small portion of the sampling probe protrudes. However, this may result in the sampling point not reaching deep enough into the vehicle interior or exhaust pipe, making it impossible to accurately collect representative air samples. For example, when testing the air inside the vehicle, it may only be possible to collect air near the doors or air vents, but not air in the corners of the vehicle or inside the air conditioning system. When testing exhaust emissions, because the probe is short, it is difficult to reach a suitable location inside the exhaust pipe, and it may be affected by external air interference, affecting the accuracy of the test results.

[0045] Reference Figure 1 - Figure 4The present application provides a vehicle air detection device, which includes a housing 100. A sampling component 200 and a detection component 300 are installed in the housing 100. The sampling component 200 includes a sampling probe 210. The sampling component 200 is used to sample the air in the car or at the exhaust pipe and deliver it to the detection component 300. The detection component 300 is used to detect the sampled gas. An adjustment assembly 400 is also provided inside the housing 100. The adjustment assembly 400 includes a first lead screw 410 rotatably connected inside the housing 100, a limiting slide bar 420 fixedly connected inside the housing 100, and a sliding plate 430 slidably connected to the limiting slide bar 420 inside the housing 100. The sampling probe 210 is installed at the top of the sliding plate 430. A connecting plate 440 is threadedly connected to the first lead screw 410 and fixedly connected to the sliding plate 430. A first motor 450 is also installed inside the housing 100. The first motor 450 and the first transmission component 460 can drive the first lead screw 410 to rotate. Then, through the threaded engagement between the first lead screw 410 and the connecting plate 440 and the engagement between the sliding plate 430 and the limiting slide bar 420, the connecting plate 440 and the sliding plate 430 can be moved as a whole along the axis of the first lead screw 410, thereby controlling the extension length of the sampling probe 210.

[0046] Furthermore, the sampling assembly 200 also includes a sampling pump 220 and an air guide tube 230 disposed within the housing 100. The exhaust port of the sampling pump 220 is connected to the detection assembly 300; one end of the air guide tube 230 is connected to the sampling probe 210, and the other end is connected to the air inlet of the sampling pump 220.

[0047] Furthermore, the vehicle air detection device also includes a control circuit board 710 and a battery pack 720 installed inside the housing 100, as well as a display screen 730 and control buttons 740 installed on the front side of the housing 100. Some buttons in the control buttons 740 are used to control the forward and reverse rotation of the first motor 450, thereby controlling the extension length of the sampling probe 210. The remaining buttons are used to power on and off the entire device and control other functions of gas detection. The battery pack 720 provides power to the electrical components inside the device, while the control circuit board 710 is used to process signals from the components inside the device. For example, when a control button 740 is pressed, the processor on the control circuit board 710 can control the operating status of the first motor 450, the sampling pump 220, or other components according to the type of control button 740. The display screen 730 is used to display the final detection data of the sampled gas.

[0048] The following describes the specific usage scenarios. When the user tests the air from inside the vehicle or the exhaust pipe, first turn on the main switch of the testing device. Then, adjust the length of the sampling probe 210 extending out of the housing 100 according to the specific characteristics of the sampling location. For example, when the sampling location is outside the exhaust pipe, the sampling probe 210 only needs to extend out of the housing 100 through the control of the first motor 450, the cooperation of the first transmission component 460, the first lead screw 410 and the connecting plate 440, and the cooperation of the sliding plate 430 and the limiting slide bar 420. In this case, the sampling probe 210 does not need to extend too far out of the housing 100. However, when more complex sampling points are required, such as under the seat or a certain section inside the exhaust pipe, the sampling probe 210 needs to extend a longer distance out of the housing 100 so that it can reach the designated sampling point for accurate sampling. After using the testing device, the sampling probe 210 is retracted into the housing 100 by the control button 740. This prevents the sampling probe 210 from accidentally falling to the ground and causing damage, and also makes the testing device easy to carry.

[0049] This application, by setting up an adjustment component 400, utilizes the cooperation of a first motor 450, a first transmission component 460, a connecting plate 440, a sliding plate 430, a limiting slide bar 420, and a first lead screw 410 to conveniently control the extension of the sampling probe 210 out of the housing 100. The extension length can be adjusted according to actual needs, resulting in more accurate sampling points and thus improved detection accuracy. After use, the sampling probe 210 is retracted into the housing 100, facilitating device portability and preventing damage to the sampling probe 210. Overall, this application does not compromise the portability of the device and allows for convenient adjustment of the extension length of the sampling probe 210, improving detection accuracy.

[0050] Reference Figure 2 , Figure 3 and Figure 4 As a specific embodiment of this application, the vehicle air detection device also includes a coiling assembly 500. When the sampling probe 210 extends out of the housing 100, the coiling assembly 500 releases the wire from the air guide tube 230. When the sampling probe 210 retracts into the housing 100, the coiling assembly 500 winds the wire back into the air guide tube 230.

[0051] Furthermore, the coil assembly 500 includes: a connecting rod 510 and an adjusting rod 520 rotatably connected within the housing 100, with the air guide tube 230 wound around the outer periphery of the connecting rod 510; a second transmission member 530 for transmission connection between the connecting rod 510 and the adjusting rod 520; and a first torsion spring 540 with one end fixed to the adjusting rod 520 and the other end fixed to the housing 100, wherein the torsion spring 540 has no elastic deformation when the sampling probe 210 is fully retracted into the housing 100.

[0052] Furthermore, the coil assembly 500 also includes a pneumatic slip ring 550, which includes a rotating part 551 and a stationary part 552. The stationary part 552 of the pneumatic slip ring 550 is fixed inside the housing 100. One end of the air guide tube 230 away from the sampling probe 210 is connected to the rotating part 551 of the pneumatic slip ring 550. The sampling pump 220 is in communication with the stationary part 552 of the pneumatic slip ring 550. Moreover, one end of the connecting rod 510 is fixed to the rotating part 551 of the pneumatic slip ring 550, and the other end of the connecting rod 510 is rotatably connected to the housing 100.

[0053] In specific usage scenarios, as the sampling probe 210 extends out of the housing 100, the air guide tube 230 is pulled. Since one end of the air guide tube 230 is connected to the rotating part 551 of the pneumatic slip ring 550, and the connecting rod 510 is fixed to the rotating part 551 of the pneumatic slip ring 550, pulling the air guide tube 230 causes the connecting rod 510 and the rotating part 551 of the pneumatic slip ring 550 to rotate. This, in turn, causes the adjusting rod 520 to rotate under the transmission of the second transmission component 530, which in turn causes the torsion spring 540 to undergo elastic deformation. When the sampling probe 210 retracts into the housing 100, the torsion spring 540 causes the adjusting rod 520 to rotate in the opposite direction, which in turn causes the connecting rod 510 to rotate in the opposite direction, further winding the air guide tube 230 around the outer circumference of the connecting rod 510. The arrangement of the coil assembly 500 prevents the air guide tubes 230 from being scattered within the housing 100, further preventing the air guide tubes 230 from affecting other components within the housing 100 during the winding and unwinding process. It should be noted that the pneumatic slip ring 550 is included to prevent the air guide tubes 230 from twisting during winding and unwinding, which would affect their air guiding effect.

[0054] Reference Figure 2 , Figure 3 and Figure 4 As a specific implementation of this application, both the first transmission member 460 and the second transmission member 530 adopt a synchronous belt transmission structure for transmission. This not only reduces transmission noise, but also ensures the transmission accuracy between the first motor 450 and the first lead screw 410, and avoids slippage problems in the transmission between the connecting rod 510 and the adjusting rod 520, as well as between the first lead screw 410 and the first motor 450.

[0055] Reference Figure 2 and Figure 3 A fixed pulley 600 is installed inside the housing 100, and the air guide tube 230 is in contact with the wheel surface of the fixed pulley 600. The fixed pulley 600 is mainly used to guide the air guide tube 230 and keep the air guide tube 230 between the fixed pulley 600 and the sampling probe 210 in a vertical state.

[0056] Reference Figure 2 As a specific embodiment of this application, the housing 100 includes an upper housing 110, a lower housing 120, a partition 130, and connecting screws 140; the partition 130 is located between the upper housing 110 and the lower housing 120, and the connecting screws 140 are used for connecting and fixing the upper housing 110, the lower housing 120, and the partition 130; the display screen 730 and the control buttons 740 are installed on the front of the upper housing 110, the control circuit board 710 is installed on the side of the partition 130 near the upper housing 110, and the battery pack 720, the detection component 300, the adjustment component 400, and the sampling component 200 are installed inside the lower housing 120.

[0057] Based on specific usage scenarios, the housing 100 is designed as an upper shell 110, a lower shell 120, and a partition 130, connected by connecting screws 140. The partition 130 isolates the adjustment component 400, battery pack 720, sampling component 200, detection component 300 from the control circuit board 710, and provides stable support for the installation of the control circuit board 710. Furthermore, the split design of the housing 100 facilitates future maintenance and repair of internal components such as the first motor 450 and the first lead screw 410.

[0058] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A vehicle air quality detection device, characterized in that, The vehicle air detection device includes: Casing (100); A sampling component (200) and a detection component (300) are installed inside a housing (100). The sampling component (200) includes a sampling probe (210) and is used to deliver gas to the detection component (300). An adjustment assembly (400) is disposed within a housing (100), the adjustment assembly (400) comprising: The first lead screw (410) is rotatably connected inside the housing (100); The limiting slide bar (420) is fixedly connected to the housing (100); The slide plate (430) is slidably connected to the limiting slide bar (420), and the sampling probe (210) is installed on the top of the slide plate (430); A connecting plate (440) is threadedly connected to a first lead screw (410), and the connecting plate (440) is fixedly connected to a sliding plate (430); The first motor (450) is installed inside the housing (100); The first transmission component (460) is used for the transmission connection between the first motor (450) and the first lead screw (410).

2. The vehicle air detection device according to claim 1, characterized in that, The sampling component (200) further includes: A sampling pump (220) is installed inside a housing (100), and the exhaust port of the sampling pump (220) is connected to the detection assembly (300); The air duct (230) is connected at one end to the sampling probe (210) and at the other end to the air inlet of the sampling pump (220).

3. The vehicle air detection device according to claim 2, characterized in that, The vehicle air detection device also includes a coiled wire assembly (500). When the sampling probe (210) extends out of the housing (100), the coiled wire assembly (500) releases wire from the air guide tube (230). When the sampling probe (210) retracts into the housing (100), the coiled wire assembly (500) winds and retracts wire from the air guide tube (230).

4. The vehicle air detection device according to claim 3, characterized in that, The coil assembly (500) includes: A pneumatic slip ring (550) includes a rotating part (551) and a stationary part (552). The stationary part (552) of the pneumatic slip ring (550) is fixed inside the housing (100). One end of the air guide tube (230) away from the sampling probe (210) is connected to the rotating part (551) of the pneumatic slip ring (550). The sampling pump (220) is connected to the stationary part (552) of the pneumatic slip ring (550). A connecting rod (510) is fixed at one end to the rotating part (551) of the pneumatic slip ring (550), and the other end of the connecting rod (510) is rotatably connected to the housing (100). The air guide tube (230) is wound around the outer periphery of the connecting rod (510). The adjusting rod (520) is rotatably connected inside the housing (100); The second transmission component (530) is used for the transmission connection between the connecting rod (510) and the adjusting rod (520); The first torsion spring (540) has one end fixed to the adjusting rod (520) and the other end fixed to the housing (100).

5. The vehicle air detection device according to claim 4, characterized in that, Both the first transmission component (460) and the second transmission component (530) adopt a synchronous belt transmission structure for transmission.

6. The vehicle air detection device according to claim 2, characterized in that, A fixed pulley (600) is installed inside the housing (100). The air guide tube (230) is in contact with the wheel surface of the fixed pulley (600). The fixed pulley (600) is used to guide the air guide tube (230) and keep the air guide tube (230) between the fixed pulley (600) and the sampling probe (210) in a vertical state.

7. The vehicle air detection device according to claim 1, characterized in that, The vehicle air detection device also includes a control circuit board (710), a battery pack (720) installed in the housing (100), and a display screen (730) and control buttons (740) installed on the front side of the housing (100).

8. The vehicle air detection device according to claim 7, characterized in that, The housing (100) includes an upper housing (110), a lower housing (120), a partition (130), and connecting screws (140); the partition (130) is located between the upper housing (110) and the lower housing (120), and the connecting screws (140) are used to connect and fix the upper housing (110), the lower housing (120), and the partition (130); the display screen (730) and the control buttons (740) are installed in front of the upper housing (110), the control circuit board (710) is installed on the side of the partition (130) near the upper housing (110), and the battery pack (720), the detection component (300), the adjustment group, and the sampling component (200) are installed inside the lower housing (120).

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