Automobile air flow meter

Abstract

The utility model provides an automobile air flow meter, and belongs to the technical field of automobile accessories. Comprising a machine barrel, a maintenance seat is arranged at the top of the machine barrel, an opening communicating with the interior of the machine barrel is formed in the top of the maintenance seat, a heat preservation ring is fixed to the inner wall of the opening in a surrounding mode, positioning grooves are symmetrically formed in the two sides of the top of the maintenance seat, and a heat preservation cover is matched with the top of the maintenance seat; the butt joint cylinder is inserted into the top opening of the maintenance seat and abuts against the upper end face of the heat preservation ring, and positioning plates are symmetrically fixed to the two sides of the bottom of the heat preservation cover and inserted into the positioning grooves. According to the utility model, a multi-stage disassembly and assembly structure is adopted, so that core components can be quickly disassembled, assembled and overhauled during later overhaul without integrally disassembling and assembling the core components, the later overhaul and maintenance efficiency can be improved, and meanwhile, by arranging the heat preservation cover, the sealing effect on the interior of the machine barrel can be improved, the interference of external temperature is reduced, and the service life of the machine barrel is prolonged. And the hot-wire type air metering effect can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile air flow meter. Background Art

[0002] The car air flow meter is a sensor used to measure the amount of air intake in the engine. By measuring the air flow, it helps the engine control unit adjust the amount of fuel injection to ensure that the engine runs in the best condition. The existing air flow meter is generally a hot wire flow meter, as shown in the attached manual. Figure 1 As shown, it includes a housing 01, a meter 02 is provided in the housing 01, a cold wire 03 (temperature compensation resistor), a hot wire 04 (platinum hot wire) and a temperature sensor 05 are provided in the meter 02 in sequence from the air inlet to the air outlet side, and a control circuit 06 electrically connected to the meter 02 is provided at the bottom of the housing 01.

[0003] When a hot-wire air flow meter is operating, air flows into meter 02 within housing 01. Cold wire 03 on the air inlet side senses the intake air temperature. The air then passes through hot wire 04. Higher air flow removes more heat, lowering the temperature of hot wire 04. Temperature sensor 05 and cold wire 03 transmit this information to control circuit 06, which adjusts the current in hot wire 04, which is proportional to the air flow.

[0004] However, in actual use, since the relevant components of this flow meter are all fixed inside the casing 01, it is inconvenient to disassemble and assemble the air flow meter as a whole during later inspection, maintenance and other care work. In addition, the control circuit 06 and the meter 02 are generally electrically connected through a wire passing through the casing 01, which will affect the isolation effect of the casing 01 from the outside world, causing the external temperature to easily interfere with the meter 02.

[0005] Therefore, the present application provides an automobile air flow meter to solve the above technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an automobile air flow meter to solve the problems in the prior art that the hot wire control flow meter is inconvenient to disassemble and assemble, which is not conducive to later inspection and maintenance, and the external temperature can easily interfere with the inside of the meter through the fine holes through which the wires are inserted.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An automobile air flow meter comprises a barrel, wherein a maintenance seat is provided at the top of the barrel, an opening is provided at the top of the maintenance seat, a heat preservation ring is fixed around the inner wall of the opening, positioning grooves are symmetrically provided on both sides of the top of the maintenance seat, and a heat preservation cover is provided on the top of the maintenance seat, a docking sleeve is fixed around the bottom of the heat preservation cover, the docking sleeve is inserted into the top opening of the maintenance seat and abutted against the upper end face of the heat preservation ring, and positioning plates are symmetrically fixed on both sides of the bottom of the heat preservation cover, and the positioning plates are inserted into the positioning grooves;

[0009] A meter for extending into the middle of the barrel is suspended at the bottom of the insulation cover, a controller is installed on the upper end surface of the insulation cover, and a plurality of wiring plugs electrically connected to the meter are provided on the upper end surface of the insulation cover, and a socket for electrically inserting the wiring plugs is provided on the lower end surface of the controller.

[0010] Optionally, latches are symmetrically provided on both sides of the top of the maintenance seat, and the latches pass horizontally through the interior of the positioning slot.

[0011] Optionally, a through hole for the pin to pass through is provided at the bottom of the positioning plate.

[0012] Optionally, a vertical connecting frame is fixed to the lower end surface of the heat-insulating cover, and the meter is fixed to the bottom of the connecting frame.

[0013] Optionally, a plurality of fixing cylinders are fixed to the edge of the upper end surface of the heat-insulating cover, and a plurality of fixing columns are fixed to the bottom edge of the controller, and the fixing columns are vertically inserted into the fixing cylinders to form a plug-in installation.

[0014] Optionally, friction lines are provided on both sides of the outer edge surface of the controller.

[0015] Optionally, protective nets are provided in both ends of the barrel.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, thanks to the cooperation of the maintenance seat, the insulation cover and the meter, by fixing the meter to the bottom of the insulation cover, the insulation cover can be disassembled to quickly remove the meter from the barrel, so that there is no need to disassemble the entire barrel during later maintenance, which is convenient to use.

[0018] In the above scheme, thanks to the detachable installation of the controller and the insulation cover, the controller and the meter are set independently, and are electrically connected to the controller and the meter through a wiring plug, avoiding the need to open fine holes on the barrel for the wires for the electrical connection of the controller and the meter to pass through, thereby ensuring the sealing effect inside the barrel, and in conjunction with the insulation ring when installing the insulation cover and the maintenance seat, it can further avoid interference between the external temperature and the inside of the barrel.

[0019] In summary, the device adopts a multi-stage disassembly and assembly structure, which enables the core components to be quickly disassembled and assembled during later maintenance without the need to disassemble the entire device, which is beneficial to improving the efficiency of later maintenance. At the same time, by providing an insulation cover, the sealing effect of the inside of the barrel can be improved, reducing the interference of external temperature, which is beneficial to ensuring the hot wire air metering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0021] Figure 1 It is a structural diagram of a hot wire air flow meter in the prior art;

[0022] Figure 2 It is a structural diagram of the utility model;

[0023] Figure 3 This is a partial structural disassembly diagram of the utility model;

[0024] Figure 4 This is a schematic diagram of the installation of the thermal insulation cover and the controller in this utility model.

[0025] [reference numerals]

[0026] 01. Casing; 02. Meter; 03. Cold wire; 04. Hot wire; 05. Temperature sensor; 06. Control circuit; 1. Cylinder; 2. Inspection seat; 201. Insulation ring; 202. Positioning groove; 203. Latch; 3. Insulation cover; 301. Docking sleeve; 302. Positioning plate; 303. Fixing sleeve; 304. Wiring plug; 4. Controller; 401. Fixing column; 5. Meter; 6. Connecting frame.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0028] The following describes the automotive air flow meter provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0029] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0030] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0031] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0032] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0033] like Figure 2As shown, an embodiment of the present invention provides an automotive air flow meter, comprising a barrel 1. Protective nets are provided at both ends of the barrel 1 to filter impurities and dust from the air and prevent damage to the metering components within the barrel 1. An inspection seat 2 is provided at the top of the barrel 1. The top of the inspection seat 2 is provided with an opening communicating with the interior of the barrel 1. An insulation ring 201 is fixed around the inner wall of the opening. The top of the inspection seat 2 is fitted with an insulation cover 3. A docking sleeve 301 is fixed around the bottom of the insulation cover 3. The docking sleeve 301 is inserted into the top opening of the inspection seat 2 and abuts against the upper end surface of the insulation ring 201 to form a sealed fit.

[0034] Cooperate Figure 3 As shown, the top of the inspection seat 2 is symmetrically provided with positioning grooves 202, and the bottom of the thermal insulation cover 3 is symmetrically fixed with positioning plates 302. The positioning plates 302 are inserted into the positioning grooves 202. Furthermore, the top of the inspection seat 2 is symmetrically provided with latches 203. The latches 203 pass horizontally through the interior of the positioning grooves 202, and the bottom of the positioning plates 302 is provided with through holes for the latches 203 to pass through. Therefore, after the thermal insulation cover 3 is covered on the inspection seat 2 to form a plug-in installation, it can be further reinforced by inserting the latches 203 through the positioning plates 302 in the positioning grooves 202.

[0035] At the same time, a vertical connecting frame 6 is fixed to the bottom of the insulation cover 3, and the lower end of the connecting frame 6 extends vertically into the middle of the barrel 1 and fixes the meter 5. The internal structure of the meter 5 adopts the following method: Figure 1 The prior art shown is sufficient.

[0036] Cooperate Figure 4 As shown, the upper end surface of the thermal insulation cover 3 is equipped with a controller 4. A plurality of fixing cylinders 303 are fixed to the edge of the upper end surface of the thermal insulation cover 3. A plurality of fixing posts 401 are fixed to the bottom edge of the controller 4. The fixing posts 401 are vertically inserted into the fixing cylinders 303 to form a plug-in installation. Friction lines are provided on both sides of the outer edge of the controller 4 to facilitate the subsequent application of force to the controller 4 for plugging and unplugging. In specific implementation, in other embodiments, the bottom of the controller 4 can also be bolted to the thermal insulation cover 3 by adding bolts to further improve the installation effect.

[0037] In addition, the upper end surface of the thermal insulation cover 3 is provided with a plurality of wiring plugs 304 electrically connected to the meter 5, and the lower end surface of the controller 4 is provided with a socket for electrically inserting the wiring plugs 304. Therefore, when the controller 4 is removed or inserted, the wiring plugs 304 are also removed or inserted simultaneously, thereby facilitating the independent installation of the controller 4 and the thermal insulation cover 3. The controller 4 is electrically connected to the meter 5 via the wiring plugs 304, which ensures the sealing effect of the thermal insulation cover 3 on the barrel 1 and prevents the interference of the external temperature on the meter 5 in the barrel 1.

[0038] The working principle provided by the utility model is that when the automobile air flow meter is in use, the positioning plate 302 can be rubbed into the positioning groove 202, so that the docking sleeve 301 is docked with the insulation ring 201, so that the insulation cover 3 can seal the top disassembly opening of the inspection seat 2, and cooperate with the controller 4 installed on the insulation cover 3, and use the wiring plug 304 to electrically connect the controller 4 and the meter 5, which can avoid opening a fine hole on the barrel 1 for the wires for electrically connecting the controller 4 and the meter 5 to pass through, thereby ensuring the sealing effect inside the barrel 1, and cooperate with the above-mentioned insulation ring 201 to avoid interference between the external temperature and the inside of the barrel 1.

[0039] At the same time, according to the above, by setting the controller 4 and the meter 5 independently, and coordinating the disassembly and assembly structure of the insulation cover 3 and the controller 4, the core components can be quickly disassembled and assembled during later maintenance without the need to disassemble the entire barrel 1, which is conducive to improving the efficiency of later maintenance.

[0040] In summary, the device adopts a multi-stage disassembly and assembly structure, so that the core components can be quickly disassembled and assembled during later maintenance without the need to disassemble the entire device, which is beneficial to improving the efficiency of later maintenance. At the same time, by providing the insulation cover 3, the sealing effect of the inside of the barrel 1 can also be improved, reducing the interference of the external temperature, which is beneficial to ensuring the hot wire air metering effect.

[0041] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An automobile air flow meter comprising a barrel (1), characterized in that: The top of the barrel (1) is provided with an inspection seat (2), the top of the inspection seat (2) is provided with an opening connected to the inside of the barrel (1), and an insulation ring (201) is fixed around the inner wall of the opening, and positioning grooves (202) are symmetrically provided on both sides of the top of the inspection seat (2), and the top of the inspection seat (2) is matched with an insulation cover (3), and a docking tube (301) is fixed around the bottom of the insulation cover (3), and the docking tube (301) is inserted into the top opening of the inspection seat (2) and abutted against the upper end surface of the insulation ring (201), and positioning plates (302) are symmetrically fixed on both sides of the bottom of the insulation cover (3), and the positioning plates (302) are inserted into the positioning grooves (202); A meter (5) for extending into the middle of the barrel (1) is suspended at the bottom of the heat-insulating cover (3); a controller (4) is plugged and installed on the upper end surface of the heat-insulating cover (3); and a plurality of wiring plugs (304) electrically connected to the meter (5) are provided on the upper end surface of the heat-insulating cover (3); and a socket for electrically inserting the wiring plugs (304) is provided on the lower end surface of the controller (4).

2. The automobile air flow meter according to claim 1, characterized in that: Latch pins (203) are symmetrically arranged on both sides of the top of the inspection seat (2), and the latch pins (203) pass horizontally through the interior of the positioning slot (202).

3. The automobile air flow meter according to claim 2, characterized in that: The bottom of the positioning plate (302) is provided with a through hole for the latch (203) to pass through.

4. The automobile air flow meter according to claim 1, characterized in that: A vertical connecting frame (6) is fixed to the lower end surface of the heat-insulating cover (3), and the meter (5) is fixed to the bottom of the connecting frame (6).

5. The automobile air flow meter according to claim 1, characterized in that: A plurality of fixing cylinders (303) are fixed to the upper end surface edge of the heat-insulating cover (3), and a plurality of fixing columns (401) are fixed to the bottom edge of the controller (4), wherein the fixing columns (401) are vertically inserted into the fixing cylinders (303) to form a plug-in installation.

6. The automobile air flow meter according to claim 1, characterized in that: Friction lines are provided on both sides of the outer edge surface of the controller (4).

7. The automobile air flow meter according to claim 1, characterized in that: Protective nets are provided in both ends of the barrel (1).

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