Automobile air flow meter device

Abstract

The application discloses a kind of automobile air flow meter devices, it is related to the technical field of measuring device, including: flowmeter main body, for detecting the air flow in air pipe inside;Communication component is connected with the flowmeter main body, for cutting off or restoring the flow channel of pipeline medium by its rotation;Limiting component is located above communication component, for limiting and fixing flowmeter main body;Specifically, maintenance personnel only need to rotate knob, can make rotary seat rotate, realize the misplacement of the channel of communication pipe two ends and the docking plate connecting port, effectively prevent external dust and impurities from entering air intake system, this operation simultaneously drives positioning rod to move, by loosening locating bolt, the limiting hole in the inside of rotating disc can be rotated and aligned with flowmeter, flowmeter main body is ejected from docking interface under the action of spring, and maintenance personnel can easily take out flowmeter main body to replace or maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metering devices, in particular to an automobile air flow meter device. BACKGROUND

[0002] In modern automobile engine management systems, the air flow meter is one of the key sensors, usually installed in the engine's intake system, between the air cleaner and the throttle valve. Its main function is to measure the air flow entering the engine cylinder in real time and transmit the measurement data to the engine control unit (ECU) in the form of an electrical signal. The ECU accurately controls the fuel injection amount and ignition time based on these data, thereby optimizing the engine's performance, fuel economy and exhaust emissions.

[0003] However, the existing air flow meter device has some limitations in design. Specifically, during maintenance, replacement or maintenance of the existing air flow meter device, the air flow meter's air inlet channel remains open after the air flow meter is removed, and cannot effectively cut off the air flow with the outside. This design brings the following main problems:

[0004] When repairing or replacing the air flow meter, since the air flow channel cannot be closed, a large amount of dust, impurities and even foreign matter from the outside may be sucked into the air intake system, causing engine failure; and in order to prevent air leakage and impurities from entering, maintenance personnel usually need to take additional measures, such as using sealing tape or temporary plugging devices, which not only increases the maintenance time, but also may cause the maintenance cost to rise; in addition, in humid or rainy environments, moisture in the air may enter the air flow meter device, causing parts to rust or corrode, further reducing the reliability and performance of the device.

[0005] In summary, the existing air flow meter device has many problems when it is repaired and replaced. These problems not only affect the maintenance efficiency and cost, but also may adversely affect the performance and service life of the engine. Therefore, there is an urgent need for an air flow meter device that can effectively close the air flow channel to improve its reliability and maintenance convenience in actual use. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides an automobile air flow meter device to solve the problems raised in the background art.

[0007] To achieve the above purpose, the present application is implemented by the following technical scheme: an automobile air flow meter device, comprising:

[0008] a flow meter body for detecting the air flow inside the air duct;

[0009] The communication assembly is connected with the flowmeter body and is used for cutting off or restoring the air flow channel by rotating the communication assembly;

[0010] The limiting assembly is located above the communication assembly and is used for limiting and fixing the flowmeter body;

[0011] The air inlet and outlet assembly is connected with the limiting assembly, the air inlet and outlet assembly is provided with two groups, and the communication assembly is connected with the air inlet and outlet assembly through rotating cooperation;

[0012] The connecting assembly is connected with the air inlet and outlet assembly and is used for connecting the two groups of air inlet and outlet assemblies.

[0013] Preferably, the communication assembly comprises a knob, the knob is connected with the bottom of the rotating seat, the rotating seat is internally provided with a communication pipe, the communication pipe is connected with the rotating seat at both ends, two hole grooves are formed in the outer wall of the rotating seat and are in communication with the inside of the communication pipe, and a filter screen is embedded in the hole grooves in the outer wall of the rotating seat, the surface of the filter screen is flush with the outer wall of the rotating seat, the rotation of the rotating seat can be realized by the simple knob operation of the maintenance personnel, the alignment or misalignment of the two ends of the communication pipe and the connecting port of the butt plate is controlled, the air flow channel is quickly cut off or restored, the control operation of the air flow channel is simplified, the maintenance efficiency is improved, the maintenance difficulty is reduced, meanwhile, the hole grooves in the outer wall of the rotating seat are in communication with the inside of the communication pipe and are embedded with the filter screen, the air entering the air flowmeter can be effectively filtered, dust and impurities are prevented from entering the inside of the device, the measurement accuracy and the reliability of the device are maintained.

[0014] Preferably, the rotating seat top outside is provided with an annular protruding structure, and the annular protruding structure is used for limiting the upper and lower positions of the rotating seat, the rotating seat top is provided with a docking interface, the bottom of the docking interface is provided with a groove, and a positioning rod is embedded in the groove, the outer part of the positioning rod is sleeved with a spring, one end of the spring at the bottom is located in the groove at the top of the docking interface, a round hole is opened at the top of the docking interface, and one end of the flow meter at the bottom is inserted into the round hole, the annular protruding structure on the top of the flow meter is used to effectively limit the upper and lower positions of the rotating seat, so that the stability of the flow meter during rotation is ensured, displacement caused by vibration or external force is avoided, and the overall stability and reliability of the device are improved. At the same time, the bottom of the docking interface at the top of the rotating seat is provided with a groove, a positioning rod is embedded in the groove, and the outer part of the positioning rod is sleeved with a spring. This structure design enables the flow meter body to be stably installed in the docking interface through the elastic effect of the spring, not only enhances the fixing effect of the flow meter body, but also facilitates the quick disassembly and installation of the flow meter body. The round hole opened at the top of the docking interface enables the bottom of the flow meter body to be accurately inserted therein, further ensuring the close cooperation and accurate alignment between the flow meter body and the rotating seat, and improving the measurement accuracy and working performance of the air flow meter device.

[0015] Preferably, the limiting assembly comprises two fixed plates, the two fixed plates are welded with each other, and a rotating disc is arranged between the two fixed plates, a limiting hole is opened in the rotating disc, the limiting hole is aligned with the flow meter body through rotating cooperation, a hole groove is arranged on the surface of the rotating disc, and the hole groove is connected with the positioning bolt; a semicircular groove is arranged on the inner side of the fixed plate, and an arc-shaped groove is arranged on the surface of the semicircular groove, the arc-shaped groove is rotatably connected with the annular protruding structure on the outer side of the rotating disc, the semicircular groove and the arc-shaped groove of the fixed plate are matched with the annular protruding structure on the outer side of the rotating disc, so that the rotating disc can rotate stably, the accurate alignment or misalignment between the limiting hole and the flow meter body is realized, the stability of the flow meter body during work is improved, the maintenance and replacement process is simplified, the disassembly and assembly of the flow meter body are more convenient and efficient, and the maintenance convenience and reliability of the air flow meter device are significantly improved.

[0016] Preferably, the air inlet and outlet assembly comprises a docking plate, the docking plate is arranged on the outer side of the rotating seat, an arc-shaped surface is arranged on the inner side of the docking plate, a hole groove is arranged on the inner side of the docking plate and communicates with the connecting port, and a sealing ring is arranged on the edge of the hole groove on the inner side of the docking plate. The hole groove on the inner side of the docking plate communicates with the connecting port, and the edge of the hole groove is provided with a sealing ring, which effectively prevents air leakage and ensures the accuracy of air flow meter measurement. This design not only improves the sealing performance and measurement accuracy of the air flow meter device, but also enhances its adaptability and reliability in harsh environments.

[0017] Preferably, the top of the butt joint plate is provided with adjusting bolts, the outside of the adjusting bolts is provided with at least two nuts, there is a gap between the adjusting bolts and the inner wall of the fixed plate for reserving fine adjustment space, and one end of the top of the adjusting bolts penetrates into the fixed plate, the inside of the butt joint plate is provided with scrapers, the scrapers are distributed in arc shape at equal intervals, and the scrapers are tightly attached to the surface of the filter screen, the fine adjustment function of the position between the butt joint plate and the fixed plate is realized through the adjusting bolts at the top of the two ends of the butt joint plate and the nuts outside the adjusting bolts, the gap reserved between the adjusting bolts and the inner wall of the fixed plate provides fine adjustment space for the butt joint plate, so that the butt joint plate can be accurately adjusted according to actual installation requirements, the close cooperation of the butt joint plate with the rotating seat and other components is ensured, the sealing performance and the measurement accuracy of the device are further improved, meanwhile, the scrapers inside the butt joint plate are distributed in arc shape at equal intervals and are tightly attached to the surface of the filter screen, when the rotating seat rotates, the scrapers can automatically clean the dust and impurities on the surface of the filter screen, the cleanliness of the filter screen is maintained, the service life of the filter screen is prolonged, and the measurement accuracy and reliability of the air flowmeter are ensured, this design not only improves the sealing performance and the measurement accuracy of the air flowmeter device, but also enhances the adaptability and maintenance convenience of the device in harsh environments.

[0018] Preferably, the connecting assembly comprises connecting rods, four connecting rods are arranged, and the surfaces of the two ends of the four connecting rods are provided with threads, the two ends of the connecting rods penetrate into the inside of the butt joint plate, and the two ends of the connecting rods are threadedly connected with connecting nuts, the stable connection between the air inlet and outlet assemblies is realized through the four connecting rods and the threads at the two ends of the connecting rods, the connecting rods penetrate into the fixed plate and are threadedly connected with the connecting nuts, this design not only ensures the close connection between the air inlet and outlet assemblies and maintains the stability of air flow, but also improves the structural strength and reliability of the entire device, the distance between the two butt joint plates can be adjusted through the threaded connection, and the stable operation of the device under various working conditions is ensured.

[0019] Preferably, the surface of the flowmeter body is provided with a circular groove with an opening downward, one end of the top of the positioning rod penetrates into the inside of the flowmeter body, and the contour shape of the outside of the flowmeter body is consistent with the shape of the limiting hole in the inside of the rotating disc, the accurate cooperation with the positioning rod is realized through the circular groove with an opening downward on the surface thereof, one end of the top of the positioning rod penetrates into the inside of the flowmeter body, this design not only ensures the stable fixation of the flowmeter body below the rotating disc, but also realizes the quick disassembly and installation of the flowmeter body through the elastic effect of the spring, the maintenance efficiency is improved, in addition, the contour shape of the outside of the flowmeter body is consistent with the shape of the limiting hole in the inside of the rotating disc, the positioning accuracy and stability of the flowmeter body in the rotating disc are further enhanced, and the measurement accuracy and reliability of the air flowmeter in the working process are ensured, this design not only improves the installation and disassembly efficiency of the flowmeter body, but also enhances the stability and reliability of the entire device.

[0020] The application provides an automobile air flow meter device.

[0021] The automobile air flow meter device of the application realizes convenient closing of the air flow passage and quick dismounting and mounting of the flow meter body, significantly improves the maintenance efficiency and the reliability of the device, and specifically, the maintenance personnel only need to rotate the knob, so that the rotating seat is rotated, the dislocation of the passage at both ends of the connecting pipe and the connecting port of the butt plate is realized, the air flow passage is closed, the dust and impurities from the outside are effectively prevented from entering the air intake system, the operation simultaneously drives the positioning rod to move, and prepares for the dismounting of the flow meter body, the limiting hole in the rotating disc is rotated and aligned with the flow meter by loosening the positioning bolt, the flow meter body is ejected from the butt port under the action of the spring, the maintenance personnel can easily take out the flow meter body for replacement or maintenance without complex tools. In addition, the filter screen and the scraper automatically clean the dust when the passage is closed, and keep clean; the sealing ring and the positioning bolt ensure the good sealing between the flow meter body and the butt port, maintain the sealing of the engine air intake system, and ensure the engine performance. The cooperative design not only simplifies the maintenance process, but also enhances the adaptability and reliability of the device in harsh environments, and provides an efficient and reliable solution for the maintenance and replacement of the automobile air flow meter device. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a schematic diagram of the side structure of the application;

[0024] Figure 3 It is a schematic diagram of the top structure of the application;

[0025] Figure 4 It is an exploded view of the application;

[0026] Figure 5 It is a schematic diagram of the limiting hole structure of the application;

[0027] Figure 6 It is a schematic diagram of the scraper structure of the application;

[0028] Figure 7 It is a schematic diagram of the filter screen structure of the application;

[0029] Figure 8 It is a schematic diagram of the Figure 7 It is a schematic diagram of the enlarged structure at A in the application;

[0030] Figure 9 It is a schematic diagram of the rotating seat structure of the application.

[0031] In the figure, 1, flow meter body; 2, communication assembly; 201, knob; 202, rotating seat; 203, filter screen; 204, communication pipe; 205, butt joint; 206, positioning rod; 207, spring; 3, limiting assembly; 301, fixed plate; 302, rotating disc; 303, positioning bolt; 304, limiting hole; 4, air inlet and outlet assembly; 401, butt joint plate; 402, sealing ring; 403, connecting port; 404, scraper; 405, adjusting bolt; 5, connecting assembly; 501, connecting rod; 502, connecting nut. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment 1: please refer to Figures 1-9 The embodiments of the present application provide a technical solution: an automobile air flow meter device, comprising:

[0034] The flow meter body 1 is used for detecting the air flow inside the air pipe; the communication assembly 2 is connected with the flow meter body 1, and is used for cutting off or restoring the flow passage of the pipe medium by rotating itself; the limiting assembly 3 is located above the communication assembly 2, and is used for limiting and fixing the flow meter body 1; the air inlet and outlet assembly 4 is connected with the limiting assembly 3, the air inlet and outlet assembly 4 is provided with two groups, and the communication assembly 2 is communicated with the air inlet and outlet assembly 4 through rotating cooperation; the flow meter body 1 detects the air flow inside the air pipe, when the flow meter body 1 is repaired, the flow passage of the pipe medium can be cut off or restored due to the misalignment of the communication assembly 2 and the passage of the air inlet and outlet assembly 4 through the rotation of the communication assembly 2, when the maintenance personnel are maintaining or replacing, they only need to operate the communication assembly 2, so as to quickly close the air flow passage, prevent the outside dust and impurities from entering the air inlet system, protect the internal parts of the engine, and the limiting assembly 3 is located above the communication assembly 2, and is used for limiting and fixing the flow meter body 1, so that the operation convenience and safety of the flow meter body 1 can be improved when it is disassembled and installed, the overall design of the device not only improves the maintenance efficiency, reduces the maintenance difficulty and cost, but also ensures the sealing performance and performance of the engine air inlet system.

[0035] Embodiment 2: please refer to Figures 2-9The embodiment of the application provides a technical scheme: an automobile air flowmeter device, the communication assembly 2 comprises a knob 201, the knob 201 is connected with the bottom of a rotating seat 202, the rotating seat 202 is internally provided with a communication pipe 204, the communication pipe 204 is connected with the rotating seat 202 at both ends, two hole grooves are formed in the outer wall of the rotating seat 202, and the hole grooves in the outer wall of the rotating seat 202 are in communication with the inside of the communication pipe 204, and a filter screen 203 is embedded in the hole grooves in the outer wall of the rotating seat 202, and the surface of the filter screen 203 is flush with the outer wall of the rotating seat 202; an annular convex structure is arranged on the top outer side of the rotating seat 202, and the annular convex structure is used for limiting the rotating seat 202 upwards and downwards, a docking port 205 is arranged on the top of the rotating seat 202, recesses are formed in the surfaces of the bottom of the docking port 205 at both ends, a positioning rod 206 is embedded in the recesses, a spring 207 is sleeved outside the positioning rod 206, one end of the spring 207 at the bottom is located in the recess at the top of the docking port 205, a round hole is formed in the top of the docking port 205, and one end of the flowmeter at the bottom is inserted into the round hole, through the connection of the knob 201 and the rotating seat 202, a maintenance worker only needs to rotate the knob 201, so that the rotating seat 202 can be rotated, and then the alignment or misalignment of the communication pipe 204 two-end passage and the connecting port 403 of the docking plate 401 is controlled, and the quick cutting or recovery of the air flow passage is realized. This design greatly simplifies the control operation of the air flow passage, and improves the maintenance efficiency. Meanwhile, the hole grooves in the outer wall of the rotating seat 202 are in communication with the inside of the communication pipe 204, and the filter screen 203 is embedded, air entering the air flowmeter can be effectively filtered, dust and impurities are prevented from entering the inside of the device, the measurement accuracy and the reliability of the device are maintained. In addition, the annular convex structure on the top of the rotating seat 202 is used for limiting upwards and downwards, ensuring the stable rotation of the rotating seat 202, and the positioning rod 206 and the spring 207 embedded in the recess at the bottom of the docking port 205 are designed, not only providing stable support for the flowmeter main body 1, but also realizing the quick disassembly and installation of the flowmeter main body 1 through the elastic action of the spring 207 when needed, further improving the convenience of maintenance, and the cooperative design not only realizes the convenient control of the air flow passage, but also enhances the filtering function and the maintenance convenience of the device, and significantly improves the overall performance and the reliability of the air flowmeter device.

[0036] Example 3: see Figures 1-6The embodiment of the present application provides a technical scheme: an automobile air flowmeter device, the limiting assembly 3 comprises two fixed plates 301, the two fixed plates 301 are welded with each other, and the two fixed plates 301 are provided with a rotating disc 302, the rotating disc 302 is internally provided with a limiting hole 304, the limiting hole 304 is aligned with the flowmeter main body 1 through rotating cooperation, the surface of the rotating disc 302 is provided with a hole groove, and the hole groove on the surface of the rotating disc 302 is connected with a positioning bolt 303; the inner side of the fixed plate 301 is provided with a semicircular groove, and the surface of the semicircular groove is provided with an arc-shaped groove; the arc-shaped groove is rotationally cooperated with the annular convex structure outside the rotating disc 302; through the cooperative action of the fixed plate 301, the rotating disc 302 and the positioning bolt 303, the stable limiting and the convenient disassembly and assembly of the flowmeter main body 1 are realized, specifically, the two fixed plates 301 are welded with each other to form a stable support structure, the rotating disc 302 is arranged between the fixed plates 301, the limiting hole 304 in the rotating disc 302 can be aligned or misaligned with the flowmeter main body 1 through rotation, so that the fixing and release of the flowmeter main body 1 are realized, the hole groove on the surface of the rotating disc 302 is connected with the positioning bolt 303, and the fixing effect of the flowmeter main body 1 is further enhanced, the sealing effect between the flowmeter main body 1 and the interface 205 is enhanced, meanwhile, the semicircular groove and the arc-shaped groove in the inner side of the fixed plate 301 are matched with the annular convex structure outside the rotating disc 302, so that the rotating disc 302 can stably rotate, the accurate alignment or misalignment of the limiting hole 304 and the flowmeter main body 1 is realized, the stability of the flowmeter main body 1 during work is improved, the maintenance and replacement process is simplified, the disassembly and assembly of the flowmeter main body 1 are more convenient and efficient, and the maintenance convenience and reliability of the air flowmeter device are remarkably improved.

[0037] Example 4: see Figures 1-5The embodiment of the present application provides a technical scheme: an automobile air flowmeter device, the air inlet and outlet assembly 4 comprises a butt joint plate 401, the butt joint plate 401 is distributed outside the rotating seat 202, the inner side of the butt joint plate 401 is provided with an arc-shaped surface, the inner side of the butt joint plate 401 is provided with a hole groove in communication with the connecting port 403, and the edge of the hole groove in the inner side of the butt joint plate 401 is provided with a sealing ring 402; the top of the two ends of the butt joint plate 401 is provided with an adjusting bolt 405, at least two nuts are arranged outside the adjusting bolt 405, one end of the top of the adjusting bolt 405 penetrates the inside of the fixed plate 301, the inside of the butt joint plate 401 is provided with a scraper 404, the scraper 404 is distributed in an arc-shaped equal interval mode, and the scraper 404 is closely attached to the surface of the filter screen 203; through the synergistic effect of the butt joint plate 401, the sealing ring 402, the adjusting bolt 405 and the scraper 404, efficient air inlet and outlet and the automatic cleaning function of the filter screen 203 are realized; specifically, the butt joint plate 401 is distributed outside the rotating seat 202, the arc-shaped surface in the inner side of the butt joint plate 401 is matched with the rotating seat 202, so that the rotating seat 202 can be smoothly rotated, the hole groove in the inner side of the butt joint plate 401 is in communication with the connecting port 403, and the sealing ring 402 is arranged at the edge of the hole groove, so that air leakage is effectively prevented, and the accuracy of air flowmeter measurement is ensured; the adjusting bolt 405 at the top of the two ends of the butt joint plate 401 and the nuts outside the adjusting bolt 405 are designed, so that the position of the fixed plate 301 can be finely adjusted, and the close cooperation of the fixed plate 301 and the rotating seat 202 is ensured; in addition, the scraper 404 in the inside of the butt joint plate 401 is distributed in an arc-shaped equal interval mode and closely attached to the surface of the filter screen 203; when the rotating seat 202 rotates, the scraper 404 can automatically clean the dust and impurities on the surface of the filter screen 203, the cleanliness of the filter screen 203 is maintained, the service life of the filter screen 203 is prolonged, the measurement accuracy and reliability of the air flowmeter are ensured, the sealing property and measurement accuracy of the air flowmeter device are improved, and the adaptability and maintenance convenience of the air flowmeter device in a harsh environment are enhanced.

[0038] Example 5: see Figures 1-4The embodiment of the present application provides a technical scheme: an automobile air flowmeter device, the connecting assembly 5 comprises four connecting rods 501, the connecting rods 501 are provided with threads on the surfaces of the two ends, the two ends of the connecting rods 501 penetrate into the inside of the butt joint plate 401, and the two ends of the connecting rods 501 are screwed with the connecting nuts 502, the surface of the flowmeter body 1 is provided with a circular groove with an opening downward, and one end of the top of the positioning rod 206 penetrates into the inside of the flowmeter body 1, the contour shape of the outside of the flowmeter body 1 is consistent with the shape of the limiting hole 304 in the inside of the rotating disc 302, through the cooperation of the connecting rods 501, the connecting nuts 502 and the flowmeter body 1 and the rotating disc 302, the stable connection between the air inlet and outlet assemblies 4 and the accurate positioning of the flowmeter body 1 are realized, specifically, the connecting assembly 5 comprises four connecting rods 501, the two ends of each connecting rod 501 are provided with threads, penetrate into the fixed plate 301 and are screwed with the connecting nuts 502, a stable connecting structure is formed, the friction between the two butt joint plates 401 and the rotating seat 202 can be adjusted by tightening the connecting nuts 502, the close connection between the air inlet and outlet assemblies 4 is ensured, the stability of air circulation is maintained, at the same time, the cooperation of the circular groove on the surface of the flowmeter body 1 and the positioning rod 206 and the consistency of the contour shape of the outside of the flowmeter body 1 and the shape of the limiting hole 304 in the inside of the rotating disc 302 realize the accurate positioning and stable fixing of the flowmeter body 1 in the rotating disc 302. This design not only ensures the overall structural stability of the air flowmeter device, but also ensures the measurement accuracy and reliability of the flowmeter body 1 in the working process, and facilitates the installation and disassembly of the flowmeter body 1, improves the maintenance efficiency.

[0039] Working principle: when the flowmeter device is used, two connecting ports 403 are connected with the air circulation pipeline in the automobile, gas enters into the communication pipe 204 through one of the connecting ports 403 and is discharged through the other connecting port 403, the flow of the gas in the communication pipe 204 is detected by the flowmeter body 1, and then the flow signal is fed back to the terminal, when the device needs to close the air circulation passage, the knob 201 at the bottom of the rotating seat 202 is rotated, so that the rotating seat 202 can rotate between the two butt joint plates 401, through the ninety-degree rotation of the rotating seat 202, the passages at the two ends of the communication pipe 204 in the rotating seat 202 can be dislocated with the connecting ports 403 of the butt joint plates 401, so that the outer wall of the rotating seat 202 is attached to the connecting ports 403, and then the air circulation passages at the two ends of the device can be closed.

[0040] When the flowmeter body 1 needs to be disassembled, the air flow passage is closed by rotating the rotating seat 202, avoiding the internal air of the pipeline from communicating with the outside, and when the rotating seat 202 is rotated, the flowmeter body 1 can be driven to rotate through the positioning rod 206, and then the two positioning bolts 303 at the bottom of one end can be removed from the hole slot on the surface of the flowmeter body 1 by loosening the positioning bolts 303, and then the two positioning rods 206 can drive the rotating disc 302 to rotate by pulling the two positioning rods 206, and the rotating disc 302 can align the shape of the limiting hole 304 in the inside with the flowmeter body 1 by rotating, and then the flowmeter body 1 can be popped out from the inside of the butt joint 205 under the action of the spring 207, and then the flowmeter can pass through the inside of the rotating disc 302, so that the flowmeter can be easily taken out; when the flowmeter body 1 is installed, the flowmeter body 1 is inserted into the hole slot at the top of the rotating disc 302, and then the flowmeter body 1 can be inserted into the butt joint 205, and the two ends of the flowmeter body 1 are limited by the positioning rod 206, and then the rotating disc 302 can be rotated by 90 degrees by rotating the rotating disc 302, so that the limiting hole 304 in the inside of the rotating disc 302 can be misaligned with the contour shape of the flowmeter, so that the flowmeter can be fixed below the rotating disc 302, and then the positioning bolt 303 can be moved downward in the rotating disc 302 by tightening the positioning bolt, so that the bottom of one end of the positioning bolt 303 can abut against the surface of the flowmeter body 1, and the rotating disc 302 can be connected with the flowmeter body 1 through the positioning bolt 303, and the limiting hole 304 in the inside of the rotating disc 302 can always be misaligned with the contour of the flowmeter body 1 during use, avoiding the flowmeter body 1 from being popped out, and at the same time, the flowmeter below can be pressed against by the positioning bolt 303 when it is tightened, so that the flowmeter body 1 can maintain good sealing with the butt joint 205, and then the two ends of the communication pipe 204 can be aligned with the connecting port 403 after the rotating seat 202 is rotated by 90 degrees, so as to restore the use, and the convenience of installation of the flowmeter body 1 is improved; in addition, when the rotating seat 202 is rotated, the filter screen 203 at the two ends of the communication pipe 204 can contact the scraper in the connecting port 403, so that the scraper can scrape and clean the dust on the outer surface of the filter screen 203.

[0041] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0042] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An automotive air flow meter device, characterized by, Include: Flow meter body (1) for detecting the flow of air inside the air pipe; Communication components (2) connected with the flow meter body (1), used to cut off or restore the flow path of the pipe medium by rotating itself; Limiting component (3) above the communication component (2) for limiting and fixing the flow meter body (1); Air inlet and outlet assembly (4) connected with the limiting component (3), and the communication component (2) is communicated with the air inlet and outlet assembly (4) by rotating fit; Connecting assembly (5) connected with the air inlet and outlet assembly (4) for connecting two air inlet and outlet assemblies (4) with each other; The communication component (2) includes a knob (201), the knob (201) is connected with the bottom of the rotating seat (202), the rotating seat (202) is provided with a communication pipe (204) inside, the communication pipe (204) is connected with the rotating seat (202) at both ends, two hole grooves are formed in the outer wall of the rotating seat (202), and the hole grooves in the outer wall of the rotating seat (202) are communicated with the inside of the communication pipe (204), and the filter screen (203) is embedded in the hole grooves in the outer wall of the rotating seat (202), the surface of the filter screen (203) is flush with the outer wall of the rotating seat (202); The rotating seat (202) is provided with an annular convex structure on the top outside, and the annular convex structure is used for limiting the rotating seat (202) up and down, the rotating seat (202) is provided with a butt joint (205) on the top, the butt joint (205) is provided with a recess on the surface of both ends of the bottom, and the recess is embedded with a positioning rod (206), the positioning rod (206) is sleeved with a spring (207) outside, one end of the spring (207) at the bottom is located in the recess in the top of the butt joint (205), and the bottom of the flow meter is inserted into the round hole; The limiting component (3) includes a fixed plate (301), the fixed plate (301) is provided with two, and the two fixed plates (301) are welded with each other, and the rotating disc (302) is arranged between the two fixed plates (301), the limiting hole (304) is formed in the rotating disc (302), the limiting hole (304) is aligned with the flow meter body (1) by rotating fit, and the hole groove is formed on the surface of the rotating disc (302), and the hole groove on the surface of the rotating disc (302) is connected with the positioning bolt (303); The inside of the fixed plate (301) is provided with a semicircular recess, and an arc slot is arranged on the surface of the semicircular recess, and the arc slot is rotatably connected with the annular convex structure on the outside of the rotating disc (302); The air inlet and outlet assembly (4) includes a butt joint plate (401), the butt joint plate (401) is arranged on the outside of the rotating seat (202), the inside of the butt joint plate (401) is provided with an arc surface, the inside of the butt joint plate (401) is provided with a hole groove communicated with the connecting port (403), and the edge of the hole groove in the inside of the butt joint plate (401) is provided with a sealing ring (402).

2. The automotive air flow meter device of claim 1, wherein: The butt joint plate (401) is provided with adjusting bolts (405) at the top of both ends, the adjusting bolts (405) are provided with at least two nuts outside, one end of the top of the adjusting bolts (405) penetrates the inside of the fixed plate (301), the butt joint plate (401) is provided with scrapers (404) inside, the scrapers (404) are distributed in arc shape at equal intervals, and the scrapers (404) are closely attached to the surface of the filter screen (203).

3. The automotive air flow meter device of claim 1, wherein: The connecting assembly (5) comprises connecting rods (501), four connecting rods (501) are arranged, and the surfaces of both ends of the four connecting rods (501) are provided with threads; both ends of the connecting rods (501) penetrate the inside of the butt joint plate (401), and both ends of the connecting rods (501) are screw-connected with connecting nuts (502).

4. The automotive air flow meter device of claim 1, wherein: The flowmeter body (1) is provided with a circular groove with an opening downward on the surface, and the top of the positioning rod (206) penetrates into the inside of the flowmeter body (1); the shape of the outside of the flowmeter body (1) is consistent with the shape of the limiting hole (304) in the inside of the rotating disc (302).

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