Automobile air flow meter device

Abstract

The invention discloses an automobile air flow meter device, which relates to the technical field of metering devices, and comprises a flow meter main body used for detecting the air flow in an air pipeline; the communicating assembly is connected with the flowmeter main body and used for cutting off or recovering a flowing channel of a pipeline medium through rotation of the communicating assembly; the limiting assembly is located above the communicating assembly and used for limiting and fixing the flowmeter body; specifically, a maintainer only needs to rotate a knob to enable a rotating seat to rotate, dislocation of channels at the two ends of a communicating pipe and a connecting port of a butt joint plate is achieved, external dust and impurities are effectively prevented from entering an air inlet system, the operation drives a positioning rod to move at the same time, a positioning bolt is loosened, and a limiting hole in a rotating disc can rotate to be aligned with a flow meter; the flow meter body pops up from the butt joint opening under the action of the spring, and a maintainer can easily take out the flow meter body to replace or maintain the flow meter body.

Description

Technical Field

[0001] The present invention relates to the technical field of metering devices, and particularly to an automotive air flow meter device. Background Art

[0002] In the engine management system of modern automobiles, the air flow meter is one of the key sensors, usually installed in the intake system of the engine, between the air filter and the throttle valve. Its main function is to measure the air flow rate entering the engine cylinders in real time and transmit the measured data to the engine control unit (ECU) in the form of an electrical signal. The ECU precisely controls the fuel injection volume and ignition timing based on this data, thereby optimizing the engine performance, fuel economy, and exhaust emissions.

[0003] However, there are some limitations in the design of existing air flow meter devices. Specifically, during the repair, replacement, or maintenance process of existing air flow meter devices, after the air flow meter is removed, the intake passage of the air flow meter always remains open, and it is impossible to effectively cut off the air circulation with the outside world. This design brings the following main problems: During the repair or replacement of the air flow meter, since the air circulation passage cannot be closed, a large amount of dust, impurities, and even foreign objects from the outside may be sucked into the intake system, resulting in engine failures; and to prevent air leakage and the entry of impurities, maintenance personnel usually need to take additional measures, such as using sealing tapes or temporary blocking devices, which not only increases the repair time but also may lead to an increase in repair costs; in addition, in a humid or rainy environment, moisture in the air may enter the air flow meter device, causing components to rust or corrode, further reducing the reliability and performance of the device.

[0004] In summary, there are many problems with existing air flow meter devices during repair and replacement. These problems not only affect the repair efficiency and cost but also may have an adverse impact on 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 circulation passage to improve its reliability and maintenance convenience in actual use. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automotive air flow meter device, which solves the problems raised in the background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An automotive air flow meter device, comprising: A flow meter main body, which is used to detect the air flow rate inside the air pipeline; A connection component, connected to the flow meter main body, for cutting off or restoring the flow passage of the pipeline medium by its own rotation; The limiting component is located above the connecting component and is used to limit and fix the main body of the flowmeter; The air inlet and outlet components are connected to the limiting component. There are two sets of the air inlet and outlet components, and the connecting component is connected to the air inlet and outlet components through rotational cooperation; The connecting component is connected to the air inlet and outlet components and is used to connect the two sets of air inlet and outlet components to each other.

[0007] Preferably, the connecting component includes a knob. The knob is connected to the bottom of the rotating seat. A connecting pipe is arranged inside the rotating seat. Both ends of the connecting pipe are connected to the rotating seat. Two hole slots are opened on the outer wall of the rotating seat, and the hole slots on the outer wall of the rotating seat are communicated with the inside of the connecting pipe. A filter screen is embedded in the hole slots on the outer wall of the rotating seat. The surface of the filter screen is flush with the outer wall of the rotating seat. Through the connection between the knob and the rotating seat, maintenance personnel can rotate the rotating seat through simple knob operations, thereby controlling the alignment or misalignment of the channels at both ends of the connecting pipe with the connection ports of the docking plate, so as to quickly cut off or restore the air flow channel, simplify the control operation of the air flow channel, improve the maintenance efficiency, and reduce the maintenance difficulty. At the same time, the hole slots on the outer wall of the rotating seat are communicated with the inside of the connecting pipe and are embedded with a filter screen, which can effectively filter the air entering the air flowmeter and prevent dust and impurities from entering the device, maintaining the measurement accuracy and the reliability of the device.

[0008] Preferably, a ring-shaped convex structure is arranged on the outer side of the top of the rotating seat, and the ring-shaped convex structure is used to limit the rotation seat up and down. A docking port is arranged at the top of the rotating seat. Grooves are arranged on the surfaces at both ends of the bottom of the docking port, and positioning rods are embedded in the grooves. Springs are sleeved outside the positioning rods. One end of the bottom of the spring is located inside the groove at the top of the docking port. A round hole is opened at the top of the docking port, and one end of the bottom of the flowmeter penetrates through the round hole. Through the ring-shaped convex structure on the outer side of its top, the up and down positions of the rotating seat are effectively limited, ensuring its stability during rotation and avoiding displacement caused by vibration or external force, thereby improving the overall stability and reliability of the device. At the same time, grooves are arranged on the surfaces at both ends of the bottom of the docking port at the top of the rotating seat, and positioning rods are embedded in the grooves. Springs are sleeved outside the positioning rods. This structural design enables the main body of the flowmeter to be firmly installed in the docking port through the elastic action of the spring, not only enhancing the fixing effect of the main body of the flowmeter, but also facilitating the quick disassembly and installation of the main body of the flowmeter. The round hole opened at the top of the docking port enables the bottom of the main body of the flowmeter to accurately penetrate through it, further ensuring the close fit and precise alignment between the main body of the flowmeter and the rotating seat, and improving the measurement accuracy and working performance of the air flowmeter device.

[0009] Preferably, the limiting component includes fixing plates. There are two fixing plates, which are welded to each other. A turntable is arranged between the two fixing plates. A limiting hole is formed inside the turntable. The limiting hole is aligned with the flowmeter main body through rotational fit. A hole groove is arranged on the surface of the turntable, and the hole groove on the surface of the turntable is connected to a positioning bolt. A semi-circular groove is arranged on the inner side of the fixing plate, and an arc-shaped groove is arranged on the surface of the semi-circular groove. The arc-shaped groove is rotationally matched with the annular convex structure on the outer side of the turntable. The semi-circular groove and the arc-shaped groove of the fixing plate cooperate with the annular convex structure on the outer side of the turntable to ensure that the turntable can rotate smoothly, realizing the precise alignment or misalignment of the limiting hole and the flowmeter main body. This design not only improves the stability of the flowmeter main body during operation but also simplifies the maintenance and replacement process, making the disassembly and assembly of the flowmeter main body more convenient and efficient, and significantly enhancing the maintenance convenience and reliability of the air flowmeter device.

[0010] Preferably, the air inlet and outlet component includes a docking plate. The docking plates are distributed on the outside of the rotating seat. The inner side of the docking plate has an arc-shaped surface. A hole groove is arranged on the inner side of the docking plate and is communicated with the connection port. 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 is communicated with the connection port, and a sealing ring is arranged on the edge of the hole groove, effectively preventing air leakage and ensuring the accuracy of the air flowmeter measurement. This design not only improves the sealing performance and measurement accuracy of the air flowmeter device but also enhances its adaptability and reliability in harsh environments.

[0011] Preferably, adjusting bolts are arranged at the top of both ends of the docking plate. At least two nuts are arranged on the outside of the adjusting bolts. There is a gap between the adjusting bolts and the inner wall of the fixing plate for reserving a fine-tuning space. One end of the top of the adjusting bolt penetrates through the inside of the fixing plate. A scraping blade is arranged inside the docking plate. The scraping blades are distributed at equal intervals in an arc shape. The scraping blades are closely attached to the surface of the filter screen. Through the adjusting bolts at the top of both ends of the docking plate and the nuts on the outside of them, the fine-tuning function of the position between the docking plate and the fixing plate is realized. The gap reserved between the adjusting bolts and the inner wall of the fixing plate provides a fine-tuning space for the docking plate, enabling the docking plate to be precisely adjusted according to the actual installation requirements to ensure its close fit with the rotating seat and other components, further improving the sealing performance and measurement accuracy of the device. At the same time, the scraping blades arranged inside the docking plate are distributed at equal intervals in an arc shape and are closely attached to the surface of the filter screen. When the rotating seat rotates, the scraping blades can automatically clean the dust and impurities on the surface of the filter screen, keep the filter screen clean, extend its service life, and ensure the measurement accuracy and reliability of the air flowmeter. This design not only improves the sealing performance and measurement accuracy of the air flowmeter device but also enhances its adaptability and maintenance convenience in harsh environments.

[0012] Preferably, the connecting component includes a connecting rod. There are four connecting rods. Threads are provided on the surfaces of both ends of the four connecting rods. Both ends of the connecting rods penetrate through the inside of the docking plate, and both ends of the connecting rods are threadedly connected to the connecting nuts. Through the four connecting rods and the threads at their both ends, a firm connection between the air inlet and outlet components is achieved. The connecting rods penetrate through the fixing plate and are threadedly connected to the connecting nuts. This design not only ensures a tight connection between the air inlet and outlet components and maintains the stability of air circulation, but also improves the structural strength and reliability of the entire device. By means of threaded connection, the distance between the two docking plates can be adjusted to ensure the stable operation of the device under various working conditions.

[0013] Preferably, a circular groove with a downward opening is provided on the surface of the flowmeter main body, and one end of the top of the positioning rod penetrates into the flowmeter main body. The outer contour shape of the flowmeter main body matches the shape of the limiting hole inside the turntable. Through the circular groove with a downward opening on its surface, precise cooperation with the positioning rod is achieved. One end of the top of the positioning rod penetrates into the flowmeter main body. This design not only ensures the firm fixation of the flowmeter main body under the turntable, but also realizes the quick disassembly and installation of the flowmeter main body through the elastic action of the spring, improving the maintenance efficiency. In addition, the outer contour shape of the flowmeter matches the shape of the limiting hole inside the turntable, further enhancing the positioning accuracy and stability of the flowmeter main body in the turntable, ensuring the measurement accuracy and reliability of the air flowmeter during operation. This design not only improves the installation and disassembly efficiency of the flowmeter main body, but also enhances the stability and reliability of the entire device.

[0014] The present invention provides an automotive air flowmeter device, which has the following beneficial effects: The automotive air flowmeter device of the present invention realizes the convenient closing of the air circulation passage and the quick disassembly and installation of the flowmeter main body, significantly improving the maintenance efficiency and the reliability of the device. Specifically, the maintenance personnel only need to turn the knob, and the rotating seat can be rotated to make the channels at both ends of the connecting pipe and the connection ports of the docking plate misaligned, thereby closing the air circulation passage, effectively preventing external dust and impurities from entering the intake system. This operation simultaneously drives the movement of the positioning rod, preparing for the disassembly of the flowmeter main body. By loosening the positioning bolt, the limiting hole inside the turntable can be rotated to align with the flowmeter, and the flowmeter main body pops out from the docking port under the action of the spring. The maintenance personnel can easily take out the flowmeter main body for replacement or maintenance without complex tools. In addition, the filter screen and the scraping blade automatically clean the dust when closing the channel to keep it clean; the sealing ring and the positioning bolt ensure good sealing between the flowmeter main body and the docking port, maintaining the sealing of the engine intake system and ensuring the engine performance. This collaborative design not only simplifies the maintenance process, but also enhances the adaptability and reliability of the device in harsh environments, providing an efficient and reliable solution for the maintenance and replacement of the automotive air flowmeter device. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic side view structure diagram of the present invention; Figure 3 is a schematic top view structure diagram of the present invention; Figure 4 is an exploded view of the present invention; Figure 5 is a schematic diagram of the limiting hole structure of the present invention; Figure 6 is a schematic diagram of the blade structure of the present invention; Figure 7 is a schematic diagram of the filter net structure of the present invention; Figure 8 This is the present invention Figure 7 The enlarged structure schematic diagram at position A in; Figure 9 is a schematic diagram of the rotating seat structure of the present invention.

[0016] In the figure, 1, the main body of the flowmeter; 2, the communication component; 201, the knob; 202, the rotating seat; 203, the filter net; 204, the communication pipe; 205, the docking port; 206, the positioning rod; 207, the spring; 3, the limiting component; 301, the fixing plate; 302, the turntable; 303, the positioning bolt; 304, the limiting hole; 4, the air inlet and outlet component; 401, the docking plate; 402, the sealing ring; 403, the connection port; 404, the blade; 405, the adjusting bolt; 5, the connection component; 501, the connecting rod; 502, the connecting nut. Detailed Description of the Invention

[0017] 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 efforts shall fall within the protection scope of the present invention.

[0018] Example 1: Please refer to Figures 1-9 , the embodiments of the present invention provide a technical solution: an automotive air flowmeter device, including: A flowmeter main body 1 for detecting the air flow inside an air pipeline; a connection component 2 connected to the flowmeter main body 1 for cutting off or restoring the flow passage of the pipeline medium through its own rotation; a limiting component 3 located above the connection component 2 for limiting and fixing the flowmeter main body 1; an air inlet and outlet component 4 connected to the limiting component 3, with two sets of air inlet and outlet components 4 provided, and the connection component 2 is communicated with the air inlet and outlet component 4 through rotational cooperation; a connection component 5 connected to the air inlet and outlet component 4 for connecting the two sets of air inlet and outlet components 4 to each other; the air flow inside the air pipeline is detected by the flowmeter main body 1. When the flowmeter main body 1 is being repaired, since the connection component 2 is misaligned with the passage of the air inlet and outlet component 4 through its own rotation, the flow passage of the pipeline medium can be cut off or restored. When maintenance personnel perform maintenance or replacement, they only need to operate the connection component 2 to quickly close the air flow passage, prevent external dust and impurities from entering the intake system, and protect the internal components of the engine. At the same time, the connection component 2 can clean the surface of the filter screen of the air flow passage during rotation. The limiting component 3 is located above the connection component 2 for limiting and fixing the flowmeter main body 1, making it possible to improve the convenience and safety of operation when the flowmeter main body 1 is disassembled and installed. The overall design of this device not only improves the repair efficiency, reduces the repair difficulty and cost, but also ensures the sealing performance of the engine intake system.

[0019] Embodiment 2: Please refer to Figures 2-9, an embodiment of the present invention provides a technical solution: an automotive air flow meter device. The connecting component 2 includes a knob 201, and the knob 201 is connected to the bottom of the rotating seat 202. A connecting pipe 204 is arranged inside the rotating seat 202. Both ends of the connecting pipe 204 are connected to the rotating seat 202. Two hole grooves are formed on the outer wall of the rotating seat 202, and the hole grooves on the outer wall of the rotating seat 202 are communicated with the inside of the connecting pipe 204. A filter screen 203 is embedded in the hole grooves on 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 protruding structure is arranged on the outer side of the top of the rotating seat 202, and the annular protruding structure is used for limiting the up and down positions of the rotating seat 202. A docking port 205 is arranged on the top of the rotating seat 202. Grooves are formed on the surfaces of both ends at the bottom of the docking port 205, and positioning rods 206 are embedded in the grooves. A spring 207 is sleeved outside the positioning rod 206. One end of the bottom of the spring 207 is located inside the top groove of the docking port 205. A round hole is formed in the top of the docking port 205, and one end of the bottom of the flow meter penetrates through the round hole. Through the connection between the knob 201 and the rotating seat 202, maintenance personnel only need to rotate the knob 201 to rotate the rotating seat 202, thereby controlling the alignment or misalignment of the channels at both ends of the connecting pipe 204 with the connection port 403 of the docking plate 401, and realizing the rapid cut-off or restoration of the air flow channel. This design greatly simplifies the control operation of the air flow channel and improves the maintenance efficiency. At the same time, the hole grooves on the outer wall of the rotating seat 202 are communicated with the inside of the connecting pipe 204 and are embedded with a filter screen 203, which can effectively filter the air entering the air flow meter, prevent dust and impurities from entering the device interior, and maintain the measurement accuracy and the reliability of the device. In addition, the annular protruding structure on the top of the rotating seat 202 is used for up and down position limitation to ensure the stable rotation of the rotating seat 202. The design of the positioning rods 206 and the spring 207 embedded in the grooves at the bottom of the docking port 205 not only provides stable support for the flow meter main body 1, but also enables the rapid disassembly and installation of the flow meter main body 1 through the elastic action of the spring 207 when needed, further improving the maintenance convenience. This collaborative design not only realizes the convenient control of the air flow channel, but also enhances the filtering function and maintenance convenience of the device, significantly improving the overall performance and reliability of the air flow meter device.

[0020] Embodiment 3: Please refer to Figures 1-6, an embodiment of the present invention provides a technical solution: an automotive air flow meter device. The limiting component 3 includes a fixing plate 301. There are two fixing plates 301, and the two fixing plates 301 are welded to each other. A turntable 302 is arranged between the two fixing plates 301. A limiting hole 304 is formed inside the turntable 302. The limiting hole 304 is aligned with the flow meter main body 1 through rotational cooperation. A hole groove is arranged on the surface of the turntable 302, and the hole groove on the surface of the turntable 302 is connected to a positioning bolt 303; a semi-circular groove is arranged on the inner side of the fixing plate 301, and an arc groove is arranged on the surface of the semi-circular groove. The arc groove is in rotational cooperation with the annular convex structure on the outer side of the turntable 302; through the cooperative action of the fixing plate 301, the turntable 302 and the positioning bolt 303, the stable limiting and convenient disassembly and assembly of the flow meter main body 1 are realized. Specifically, the two fixing plates 301 are welded to each other to form a stable support structure. The turntable 302 is arranged between the fixing plates 301. The limiting hole 304 inside it can be aligned or misaligned with the flow meter main body 1 through rotation, so as to realize the fixation and release of the flow meter main body 1. The hole groove on the surface of the turntable 302 is connected to the positioning bolt 303, further enhancing the fixing effect on the flow meter main body 1, and achieving the effect of strengthening the sealing between the flow meter main body 1 and the docking port 205. At the same time, the semi-circular groove and the arc groove on the inner side of the fixing plate 301 cooperate with the annular convex structure on the outer side of the turntable 302 to ensure that the turntable 302 can rotate smoothly, realizing the precise alignment or misalignment of the limiting hole 304 and the flow meter main body 1. This design not only improves the stability of the flow meter main body 1 during operation, but also simplifies the maintenance and replacement process, making the disassembly and assembly of the flow meter main body 1 more convenient and efficient, and significantly improving the maintenance convenience and reliability of the air flow meter device.

[0021] Example 4: Please refer to Figures 1-5, an embodiment of the present invention provides a technical solution: an automotive air flow meter device. The air inlet and outlet assembly 4 includes a docking plate 401, which is distributed outside the rotating seat 202. The inner side of the docking plate 401 has an arc-shaped surface. There are holes in the inner side of the docking plate 401 that communicate with the connection port 403, and a sealing ring 402 is provided at the edge of the holes in the inner side of the docking plate 401. At the top of both ends of the docking plate 401, adjustment bolts 405 are provided. There are at least two nuts outside the adjustment bolts 405, and one end of the top of the adjustment bolt 405 penetrates through the inside of the fixing plate 301. A scraping blade 404 is provided inside the docking plate 401. The scraping blades 404 are distributed in an arc shape at equal intervals and are in close contact with the surface of the filter net 203. Through the coordinated action of the docking plate 401, the sealing ring 402, the adjustment bolt 405 and the scraping blade 404, the efficient intake and exhaust of air and the automatic cleaning function of the filter net 203 are realized. Specifically, the docking plate 401 is distributed outside the rotating seat 202, and the arc-shaped surface on its inner side matches the rotating seat 202 to ensure the smooth rotation of the rotating seat 202. The holes in the inner side of the docking plate 401 communicate with the connection port 403, and a sealing ring 402 is provided at the edge of the holes, effectively preventing air leakage and ensuring the accuracy of the air flow meter measurement. The design of the adjustment bolts 405 at the top of both ends of the docking plate 401 and the nuts outside them facilitates fine adjustment of the position of the fixing plate 301 to ensure its close fit with the rotating seat 202. In addition, the scraping blades 404 inside the docking plate 401 are distributed in an arc shape at equal intervals and are in close contact with the surface of the filter net 203. When the rotating seat 202 rotates, the scraping blades 404 can automatically clean the dust and impurities on the surface of the filter net 203, keep the filter net 203 clean, extend its service life, and at the same time ensure the measurement accuracy and reliability of the air flow meter. This design not only improves the sealing performance and measurement accuracy of the air flow meter device, but also enhances its adaptability and maintenance convenience in harsh environments.

[0022] Embodiment 5: Please refer to Figures 1-4, an embodiment of the present invention provides a technical solution: an automotive air flow meter device. The connecting component 5 includes a connecting rod 501. There are four connecting rods 501. Threads are provided on the surfaces at both ends of the four connecting rods 501. Both ends of the connecting rod 501 penetrate through the inside of the docking plate 401, and both ends of the connecting rod 501 are threadedly connected with the connecting nut 502. A circular groove with a downward opening is provided on the surface of the flow meter main body 1. One end of the top of the positioning rod 206 penetrates into the inside of the flow meter main body 1. The outer contour shape of the flow meter matches the shape of the limiting hole 304 inside the turntable 302. Through the cooperation of the connecting rod 501, the connecting nut 502, and the flow meter main body 1 and the turntable 302, the stable connection between the air inlet and outlet components 4 and the precise positioning of the flow meter main body 1 are achieved. Specifically, the connecting component 5 includes four connecting rods 501. Threads are provided at both ends of each connecting rod 501. It penetrates through the fixing plate 301 and is threadedly connected with the connecting nut 502 to form a stable connection structure. By tightening the connecting nut 502, the friction force between the two docking plates 401 and the rotating seat 202 can be adjusted to ensure the tight connection between the air inlet and outlet components 4 and maintain the stability of air circulation. At the same time, the cooperation between the circular groove on the surface of the flow meter main body 1 and the positioning rod 206, and the outer contour of the flow meter matching the shape of the limiting hole 304 inside the turntable 302 achieve the precise positioning and stable fixation of the flow meter main body 1 in the turntable 302. This design not only ensures the overall structural stability of the air flow meter device but also guarantees the measurement accuracy and reliability of the flow meter main body 1 during operation. At the same time, it facilitates the installation and disassembly of the flow meter main body 1 and improves the maintenance efficiency.

[0023] Working principle: When this flow meter device is in use, by docking and installing the two connection ports 403 with the air circulation pipeline inside the vehicle, the gas will enter the inside of the connecting pipe 204 through one of the connection ports 403 and then be discharged through the other connection port 403. During the process of the gas flowing inside the connecting pipe 204, the flow rate will be detected by the flow meter main body 1. Then, the flow meter main body 1 will feedback the flow signal to the terminal. When the device needs to close the air circulation channel, by rotating the knob 201 at the bottom of the rotating seat 202, the rotating seat 202 can rotate between the two docking plates 401. Through a ninety-degree rotation of the rotating seat 202, the channels at both ends of the connecting pipe 204 inside the rotating seat 202 can be misaligned with the connection ports 403 of the docking plate 401, so that the outer wall of the rotating seat 202 fits with the connection port 403, thereby closing the air connection channels at both ends of the device. When the flowmeter main body 1 needs to be disassembled, by rotating the rotating seat 202, the air circulation channel is closed to prevent the air inside the pipeline from communicating with the outside. When the rotating seat 202 rotates, the positioning rod 206 can drive the flowmeter main body 1 to rotate. Then, by loosening the positioning bolts 303, the bottom ends of the two positioning bolts 303 can be removed from the hole grooves on the surface of the flowmeter main body 1. Then, by pulling the two positioning rods 206, the two positioning rods 206 can drive the turntable 302 to rotate. The turntable 302 can rotate to align the shape of the internal limit hole 304 with the flowmeter main body 1. Then, under the action of the spring 207, the flowmeter main body 1 can pop out from the inside of the docking port 205, and then the flowmeter can pass through the inside of the turntable 302, making it convenient to take out the flowmeter; when installing the flowmeter main body 1, by inserting the flowmeter main body 1 into the hole groove at the top of the turntable 302, the flowmeter main body 1 can be inserted into the docking port 205. At the same time, both ends of the flowmeter main body 1 are limited by the positioning rods 206. Then, by rotating the turntable 302, the turntable 302 can rotate 90 degrees, so that the limit hole 304 inside the turntable 302 can be misaligned with the outer contour of the flowmeter, and the flowmeter can be fixed below the turntable 302. Then, by tightening the positioning bolts, the positioning bolts 303 can move downward inside the turntable 302, and the bottom end of the positioning bolt 303 can abut against the surface of the flowmeter main body 1, so that the turntable 302 can be connected to the flowmeter main body 1 through the positioning bolts 303. During use, the limit hole 304 inside the turntable 302 can always be misaligned with the contour of the flowmeter main body 1 to prevent the flowmeter main body 1 from popping out. At the same time, when the positioning bolts 303 are tightened, they can abut and press the flowmeter below, so that the flowmeter main body 1 can maintain a good seal with the docking port 205. Then, after the rotating seat 202 rotates 90 degrees, the two ends of the connecting pipe 204 can be aligned with the connection port 403, so as to resume use, improving the convenience of installing the flowmeter main body 1; in addition, when the rotating seat 202 rotates, the filter screens 203 at both ends of the connecting pipe 204 can contact the scrapers inside the connection port 403, so that the scrapers can scrape and clean the dust on the outer surface of the filter screens 203.

[0024] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0025] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner 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 automotive air flow meter device, characterized in that, Comprising: A flowmeter main body (1) for detecting the air flow inside the air pipeline; A connecting component (2) connected to the flowmeter main body (1) and used to cut off or restore the flow passage of the pipeline medium through its own rotation; A limiting component (3) located above the connecting component (2) and used to limit and fix the flowmeter main body (1); An air inlet and outlet component (4) connected to the limiting component (3), and the connecting component (2) is communicated with the air inlet and outlet component (4) through rotational cooperation; A connecting component (5) connected to the air inlet and outlet component (4) and used to connect two groups of air inlet and outlet components (4) to each other.

2. The automotive air flow meter device according to claim 1, characterized in that: The connecting component (2) includes a knob (201), the knob (201) is connected to the bottom of a rotating seat (202), a communicating pipe (204) is arranged inside the rotating seat (202), both ends of the communicating pipe (204) are connected to the rotating seat (202), two hole grooves are formed on the outer wall of the rotating seat (202), and the hole grooves on the outer wall of the rotating seat (202) are communicated with the inside of the communicating pipe (204). A filter net (203) is embedded in the hole grooves on the outer wall of the rotating seat (202), and the surface of the filter net (203) is flush with the outer wall of the rotating seat (202).

3. The automotive air flow meter device according to claim 2, characterized in that: An annular convex structure is arranged on the outer side of the top of the rotating seat (202) and is used to limit the up and down position of the rotating seat (202). A docking port (205) is arranged on the top of the rotating seat (202). Grooves are formed on the surfaces of both ends of the bottom of the docking port (205), and positioning rods (206) are embedded in the grooves. A spring (207) is sleeved outside the positioning rods (206). One end of the bottom of the spring (207) is located inside the top groove of the docking port (205). A round hole is formed in the top of the docking port (205), and one end of the bottom of the flowmeter penetrates through the round hole.

4. The automotive air flow meter device according to claim 3, wherein: The limiting component (3) includes fixing plates (301). There are two fixing plates (301), and the two fixing plates (301) are welded to each other. A rotating disc (302) is arranged between the two fixing plates (301). A limiting hole (304) is formed inside the rotating disc (302), and the limiting hole (304) is aligned with the flowmeter main body (1) through rotational cooperation. A 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 to a positioning bolt (303); A semi-circular groove is arranged on the inner side of the fixing plate (301), and an arc-shaped groove is arranged on the surface of the semi-circular groove. The arc-shaped groove is in rotational cooperation with the annular convex structure on the outer side of the rotating disc (302).

5. The automotive air flow meter device according to claim 4, characterized in that: The air inlet and outlet component (4) includes a docking plate (401). The docking plates (401) are distributed on the outer side of the rotating seat (202). An arc-shaped surface is arranged on the inner side of the docking plate (401). A hole groove on the inner side of the docking plate (401) is communicated with a connection port (403), and a sealing ring (402) is arranged on the edge of the hole groove on the inner side of the docking plate (401).

6. The automotive air flow meter device according to claim 5, characterized in that: Adjusting bolts (405) are provided at the top of both ends of the docking plate (401). At least two nuts are provided outside the adjusting bolts (405), and one end of the top of the adjusting bolts (405) penetrates through the inside of the fixing plate (301). A scraping blade (404) is arranged inside the docking plate (401). The scraping blades (404) are distributed at equal intervals in an arc shape, and the scraping blades (404) are in close contact with the surface of the filter screen (203).

7. The automotive air flow meter device according to claim 6, characterized in that: The connecting component (5) includes a connecting rod (501). There are four connecting rods (501). Threads are provided on the surfaces of both ends of the four connecting rods (501). Both ends of the connecting rod (501) penetrate through the inside of the docking plate (401), and both ends of the connecting rod (501) are threadedly connected with connecting nuts (502).

8. The automotive air flow meter device according to claim 7, characterized in that: A circular groove with an opening facing downwards is provided on the surface of the flowmeter main body (1), and one end of the top of the positioning rod (206) penetrates into the inside of the flowmeter main body (1). The outer contour shape of the flowmeter main body (1) coincides with the shape of the limiting hole (304) inside the turntable (302).

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