CN209857994U - Automobile air flow meter - Google Patents
Automobile air flow meter Download PDFInfo
- Publication number
- CN209857994U CN209857994U CN201920461312.0U CN201920461312U CN209857994U CN 209857994 U CN209857994 U CN 209857994U CN 201920461312 U CN201920461312 U CN 201920461312U CN 209857994 U CN209857994 U CN 209857994U
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- air flow
- shell
- sealing
- grid plate
- flow meter
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Abstract
The utility model discloses an automobile air flow meter, which comprises a shell, wherein an air flow channel is arranged in the shell, an air inlet grid plate and a filter screen are arranged on the front side of the air flow channel, an air outlet grid plate is arranged on the rear side of the air flow channel, and an air flow sensor is arranged on the outer side of the middle part of the air flow channel; an insertion groove is formed in the front side of the shell, and clamping edges are formed in the edges of the filter screen and the air inlet grid plate; the automobile air flow meter not only realizes the fixed sealing of the filter screen and the grid plate, but also greatly simplifies the structure of the filter screen and the grid plate by using the inserting groove, the fixing cap and the sealing and pressing screw cap which are arranged on the shell, so that the automobile air flow meter is more convenient and rapid to produce, use and maintain, and has better sealing and fixing effects; through the clamping groove and the retaining chuck, the retaining function of the sealing and pressing screw cap is realized, and the sealing and pressing screw cap is more firmly fixed and sealed.
Description
Technical Field
The utility model relates to an air flow meter field specifically is an automobile air flow meter.
Background
An air flow sensor, also called an air flow meter, is one of the important sensors of an electronic fuel injection engine. It converts the intake air flow into an electrical signal sent to an Electronic Control Unit (ECU) which is a sensor that measures the intake air flow into the engine as one of the basic signals that determine the injection of fuel. In order to obtain an optimum concentration of a mixture gas under various operating conditions, an electronically controlled gasoline injection engine must accurately measure the amount of air drawn into the engine at each instant, which is the primary basis for the ECU to calculate (control) the amount of injected fuel. If the air flow sensor or the circuit is in fault, the ECU can not obtain a correct air inflow signal, the control of the fuel injection quantity can not be normally carried out, the mixed gas is over-rich or over-lean, and the engine is abnormal in operation. The air flow sensor of the electronic control gasoline injection system has various types, and common air flow sensors can be divided into a blade (wing plate) type, a measuring core type, a hot wire type, a hot film type, a karman vortex type and the like according to the structural types of the air flow sensors.
The filter screen and the grid plate of the conventional automobile air flow meter have complex structures, are difficult to manufacture, have limited sealing effect, are inconvenient to replace and clean, and cannot meet the requirements of production, use and maintenance well, so that the novel automobile air flow meter becomes the requirement of people.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automobile air flow meter to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an automobile air flow meter comprises a shell, wherein an air flow channel is arranged in the shell, an air inlet grid plate and a filter screen are arranged on the front side of the air flow channel, an air outlet grid plate is arranged on the rear side of the air flow channel, and an air flow sensor is arranged on the outer side of the middle part of the air flow channel; an insertion groove is formed in the front side of the shell, and clamping edges are formed in the edges of the filter screen and the air inlet grid plate; the fixing cap is in a semicircular structure matched with the insertion groove at the lower part of the shell, and the inner side of the fixing cap is provided with the matched insertion groove; the outer side of the front air inlet of the shell is provided with external threads, the inner side of the sealing and pressing screw cap is provided with internal threads matched with the external threads of the shell, the sealing and pressing screw cap is connected with the shell through thread matching, the sealing and pressing screw cap is annular, the outer side of the front part of the sealing and pressing screw cap is provided with a clamping groove, the shell is provided with a non-return chuck matched with the clamping groove, and the front end of the sealing and pressing screw cap is connected with the shell through the matching of the non-return chuck and the clamping groove; the rear side of the shell is provided with an air outlet grid plate, the rear part of the shell is provided with an insertion groove, the air outlet grid plate is installed in the insertion groove in an interference fit mode, a fixing cap is installed on the upper portion of the air outlet grid plate, external threads are arranged on the outer side of the rear part of the shell, matched internal threads are arranged on the inner side of the sealing and pressing screw cover, and the sealing and pressing screw cover is connected with the shell in a threaded fit mode.
As a further aspect of the present invention: the front side of the air flow sensor is provided with a detection probe, the shell is provided with a mounting hole of the detection probe, and the detection probe is mounted in the mounting hole.
As a further aspect of the present invention: the insertion groove and the shell are of an integrally formed structure.
As a further aspect of the present invention: the insertion groove is a semicircular groove and is arranged at the lower part of the front side of the shell.
As a further aspect of the present invention: the thickness of the inserting groove is equal to the sum of the thicknesses of the filter screen and the air inlet grid plate.
As a further aspect of the present invention: the depth of the insertion groove is equal to the width of the clamping edge.
As a further aspect of the present invention: the filter screen, the air inlet grid plate and the insertion groove are in interference fit.
As a further aspect of the present invention: an inner sealing ring is arranged on the inner side of the sealing and pressing screw cap.
Compared with the prior art, the beneficial effects of the utility model are that: the automobile air flow meter not only realizes the fixed sealing of the filter screen and the grid plate, but also greatly simplifies the structure of the filter screen and the grid plate by using the inserting groove, the fixing cap and the sealing and pressing screw cap which are arranged on the shell, so that the automobile air flow meter is more convenient and rapid to produce, use and maintain, and has better sealing and fixing effects; through the clamping groove and the retaining chuck, the retaining function of the sealing and pressing screw cap is realized, and the sealing and pressing screw cap is more firmly fixed and sealed.
Drawings
Fig. 1 is a schematic structural diagram of an automotive air flow meter.
Fig. 2 is a partial structural schematic diagram of an automotive air flow meter.
Fig. 3 is a schematic structural view of an air intake port of an automotive air flow meter.
Fig. 4 is a schematic structural diagram of a fixing cap in an automotive air flow meter.
Fig. 5 is a schematic structural view of a screen and a grid plate in an automotive air flow meter.
Fig. 6 is a schematic structural view of a packing screw cap of a cleaning roller in an automotive air flow meter.
In the figure: the air flow sensor comprises a shell 1, an air flow sensor 2, an air flow channel 3, an air inlet grid plate 4, an air outlet grid plate 5, a filter screen 6, external threads 7, an insertion groove 8, a fixing cap 9, a clamping edge 10, a clamping groove 11, a sealing and pressing screw cover 12 and a backstop chuck 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 5, in an embodiment of the present invention, an automotive air flow meter includes a housing 1, an air flow channel 3 is disposed inside the housing 1, an air inlet grid plate 4 and a filter screen 6 are mounted on a front side of the air flow channel 3, an air outlet grid plate 5 is mounted on a rear side of the air flow channel 3, an air flow sensor 2 is disposed on an outer side of a middle portion of the air flow channel 3, a detection probe is disposed on a front side of the air flow sensor 2, a mounting hole of the detection probe is disposed on the housing 1, and the detection probe is mounted in the mounting hole; the air flow channel 3 is used for conducting air, and the air flow sensor 2 is used for measuring air flow; the air inlet grid plate 4 and the filter screen 6 are used for filtering the entering air; the air outlet grid plate 5 is used for filtering the returned air;
referring to fig. 1-6, in the embodiment of the present invention, an insertion groove 8 is disposed on the front side of the casing 1, the insertion groove 8 and the casing 1 are of an integrally formed structure, the insertion groove 8 is a semicircular groove, the insertion groove 8 is disposed on the lower portion of the front side of the casing 1, the thickness of the insertion groove 8 is equal to the sum of the thicknesses of the filter screen 6 and the air inlet grid plate 4, clamping edges 10 are disposed on the edges of the filter screen 6 and the air inlet grid plate 4, the clamping edges 10 are used for facilitating the sealing of the gap, preventing dust from entering the air flow channel 3 through the gap, and the depth of the insertion groove 8 is equal to the width of the clamping edges 10; the number of the filter screens 6 and the air inlet grid plates 4 can be properly reduced according to the requirement; the fixing cap 9 is of a semicircular structure matched with the inserting groove 8 at the lower part of the shell 1, the inserting groove 8 matched with the fixing cap 9 is arranged on the inner side of the fixing cap 9, and the fixing cap 9 is used for fixing and sealing the filter screen 6 and the upper semicircular part of the air inlet grid plate 4; the filter screen 6 is in interference fit with the air inlet grid plate 4 and the insertion groove 8; the outer side of the air inlet at the front part of the shell 1 is provided with an external thread 7, the inner side of the pressure sealing screw cover 12 is provided with an internal thread matched with the external thread 7 of the shell 1, and the pressure sealing screw cover 12 is connected with the shell 1 through thread matching to realize the fixation and sealing of the filter screen 6 and the air inlet grid plate 4; the pressure sealing screw cap 12 is of a circular ring type, and is arranged to enable air to enter the air flow channel 3; an inner sealing ring is arranged on the inner side of the sealing and pressing screw cap 12 and is used for fixing and sealing the edge of the fixing cap 9; a clamping groove 11 is formed in the outer side of the front part of the sealing and pressing screw cap 12, a non-return chuck 13 matched with the clamping groove 11 is arranged on the shell 1, and the front end of the sealing and pressing screw cap 12 is connected with the shell 1 through the matching of the non-return chuck 13 and the clamping groove 11; the inserting groove 8 is used for carrying out primary fixing, limiting and sealing on the filter screen 6 and the air inlet grid plate 4, and the sealing and pressing screw cap 12 is used for carrying out secondary fixing and sealing on the filter screen 6 and the air inlet grid plate 4; the clamping groove 11 and the backstop chuck 13 are used for limiting and fixing the sealing and pressing screw cap 12, so that the sealing and pressing screw cap 12 cannot move back when an engine vibrates;
referring to fig. 1-6, in the embodiment of the present invention, an air outlet grid plate 5 is disposed at the rear side of a casing 1, an insertion groove 8 is disposed at the rear portion of the casing 1, the air outlet grid plate 5 is installed in the insertion groove 8 through interference fit, a fixing cap 9 is installed at the upper portion of the air outlet grid plate 5, an external thread 7 is disposed at the outer side of the rear portion of the casing 1, a matching internal thread is disposed at the inner side of a sealing and pressing screw cap 12, and the sealing and pressing screw cap 12 is connected with the casing 1 through screw-thread fit to fix the air outlet grid plate 5;
during installation, the filter screen 6 and the air inlet grid plate 4 are overlapped together and are installed and seated in an inserting groove 8 of an air inlet, the filter screen 6 and the air inlet grid plate 4 are fixedly sealed with the shell 1 through interference fit, then a fixing cap 9 is buckled on the upper semicircular part of the filter screen 6 and the air inlet grid plate 4 to realize fixed sealing of the upper part, and finally a sealing and pressing screw cap 12 is screwed on the outer side of the shell 1 to realize sealed fixing of the filter screen 6 and the air inlet grid plate 4 again; when the air inlet grid plate needs to be disassembled, replaced or cleaned, the sealing and pressing screw cover 12 is screwed down, then the fixing cap 9 is taken down, and then the filter screen 6 and the air inlet grid plate 4 are taken down for replacement or cleaning.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. An automobile air flow meter comprises a shell (1), and is characterized in that an air flow channel (3) is arranged in the shell (1), an air inlet grid plate (4) and a filter screen (6) are installed on the front side of the air flow channel (3), an air outlet grid plate (5) is installed on the rear side of the air flow channel (3), and an air flow sensor (2) is arranged on the outer side of the middle of the air flow channel (3); an inserting groove (8) is formed in the front side of the shell (1), and clamping edges (10) are formed in the edges of the filter screen (6) and the air inlet grid plate (4); the fixing cap (9) is in a semicircular structure matched with the inserting groove (8) at the lower part of the shell (1), and the inner side of the fixing cap (9) is provided with the matched inserting groove (8); the outer side of an air inlet at the front part of the shell (1) is provided with an external thread (7), the inner side of the sealing and pressing screw cap (12) is provided with an internal thread matched with the external thread (7) of the shell (1), the sealing and pressing screw cap (12) is connected with the shell (1) through thread matching, the sealing and pressing screw cap (12) is of a circular ring shape, the outer side of the front part of the sealing and pressing screw cap (12) is provided with a clamping groove (11), the shell (1) is provided with a backstop clamping head (13) matched with the clamping groove (11), and the front end of the sealing and pressing screw cap (12) is connected with the shell (1) through the matching of the backstop clamping head (13) and the clamping groove (11); the rear side of the shell (1) is provided with an air outlet grid plate (5), the rear portion of the shell (1) is provided with an insertion groove (8), the air outlet grid plate (5) is installed in the insertion groove (8) in an interference fit mode, a fixing cap (9) is installed on the upper portion of the air outlet grid plate (5), external threads (7) are arranged on the outer side of the rear portion of the shell (1), matched internal threads are arranged on the inner side of a sealing and pressing screw cover (12), and the sealing and pressing screw cover (12) is connected with the shell (1) through a thread fit mode.
2. The automotive air flow meter according to claim 1, characterized in that the front side of the air flow sensor (2) is provided with a detection probe, and the housing (1) is provided with a mounting hole of the detection probe, and the detection probe is mounted in the mounting hole.
3. An automotive air flow meter according to claim 1, characterised in that the cartridge (8) and the housing (1) are of one-piece construction.
4. An automotive air flow meter according to claim 1, characterized in that the cartridge slot (8) is a semicircular slot, and the cartridge slot (8) is arranged at the lower part of the front side of the housing (1).
5. An automotive air flow meter according to claim 1, characterised in that the thickness of the slots (8) is equal to the sum of the thicknesses of the screen (6) and the air intake grid plate (4).
6. An automotive air flow meter according to claim 1, characterised in that the depth of the cartridge slot (8) is equal to the width of the retaining edge (10).
7. An automotive air flow meter according to claim 1, characterised in that the screen (6) is an interference fit with the air inlet grid plate (4) and the slots (8).
8. An automotive air flow meter according to claim 1, characterized in that the inner side of the gland nut (12) is provided with an inner sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461312.0U CN209857994U (en) | 2019-04-08 | 2019-04-08 | Automobile air flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461312.0U CN209857994U (en) | 2019-04-08 | 2019-04-08 | Automobile air flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209857994U true CN209857994U (en) | 2019-12-27 |
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ID=68936548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920461312.0U Active CN209857994U (en) | 2019-04-08 | 2019-04-08 | Automobile air flow meter |
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| Country | Link |
|---|---|
| CN (1) | CN209857994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839164A (en) * | 2019-04-08 | 2019-06-04 | 温州钱王汽配有限公司 | A kind of automobile air flow meter |
-
2019
- 2019-04-08 CN CN201920461312.0U patent/CN209857994U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839164A (en) * | 2019-04-08 | 2019-06-04 | 温州钱王汽配有限公司 | A kind of automobile air flow meter |
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