Automobile air flow sensor

Abstract

The utility model provides an automobile air flow sensor, which comprises a shell, an air inlet, an air outlet, an air outlet, a supporting plate, a filter plate, a flow sensor, a flow sensor, a flow sensor and a controller, and is characterized in that the shell is provided with an air outlet and an air inlet, and the air inlet is provided with a supporting plate; the detection unit is arranged in the shell, and the detection unit comprises a heating piece arranged between the air inlet and the air outlet; the device comprises a shell and a supporting cover, the supporting cover is connected to the shell in a clamped mode, an auxiliary unit is arranged on the supporting cover and comprises a push block, a supporting block and a motor arranged on the supporting block, and a rotary disc matched with the push block is arranged at the output end of the motor. When the automobile air flow sensor provided by the utility model is used, the rotating disc can be controlled to rotate through the motor, so that the touch head on the push block intermittently touches the filter plate, dust on the filter plate falls off, dust accumulation is reduced, and the accuracy of a temperature detection value is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely related to an automobile air flow sensor. BACKGROUND

[0002] Air flow sensor is usually arranged at the air inlet of engine, which converts the flow speed of air into electric signal, and then transmits the electric signal to the electronic detection unit through signal line, so as to determine the fuel injection content according to the size of electric signal, thereby ensuring that the automobile can run in the best state.

[0003] The hot-wire air flow sensor comprises a shell and a heating assembly, the heating assembly is arranged in the shell, when air enters the shell from the air inlet, the heat in the heating assembly is taken away, thereby the size of air flow is obtained according to the change of resistance.

[0004] However, during the detection of air flow sensor, a filter screen is usually arranged at the air inlet, dust will accumulate on the filter screen after long-time operation, thereby affecting the air flow of air inlet, and the internal temperature of air flow sensor will also be gathered to cause overheating, so that inaccurate data is prone to occur during detection. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model can be realized through the following technical scheme: an automobile air flow sensor, comprising:

[0007] The shell has an air outlet and an air inlet, a support plate is arranged on the air inlet, and a filter plate is arranged on the support plate;

[0008] A detection unit is arranged in the shell, and the detection unit comprises a heating element arranged between the air inlet and the air outlet;

[0009] A support cover is clamped on the shell, an auxiliary unit is arranged on the support cover, the auxiliary unit comprises a push block, a support block and a motor arranged on the support block, an output end of the motor is provided with a turntable matched with the push block, and a touch head is clamped on the push block;

[0010] The turntable drives the push block to reciprocally slide on the support block, so as to control the touch head to knock the filter screen.

[0011] In the utility model embodiment, the support cover is provided with a cover plate matched with the motor, the cover plate is provided with a connecting line matched with the detection unit;

[0012] The clamping block is provided with a sliding groove, and the supporting block is arranged in the sliding groove.

[0013] The dust box is provided with an opening, and the opening is located below the filter plate.

[0014] The dust box is provided with an opening, and the opening is located below the filter plate.

[0015] The supporting cover is provided with a clamping groove and an arc-shaped groove, and the clamping groove is matched with the shell.

[0016] The rotary disc is provided with a circular groove in a linear array, and the circular groove is matched with the transmission rod.

[0017] The supporting plate is provided with a spring for pushing the filter plate.

[0018] The supporting plate is provided with a limiting block.

[0019] The detection unit comprises a fixing sleeve, a plug connector and a control circuit board, the plug connector is electrically connected with the control circuit board, and both are arranged on the shell, and the heating element is arranged on the fixing sleeve and matched with the control circuit board.

[0020] The shell is provided with a conical sleeve, one end of the conical sleeve is matched with the heating element, and the other end is provided with a bonding part.

[0021] Compared with the prior art, the automobile air flow sensor can rotate the rotary disc through the motor to make the touch head on the push block intermittently touch the filter plate, so that the dust on the filter plate falls off, the dust accumulation is reduced, and the accuracy of the temperature detection value is improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0023] Figure 2 It is an exploded structural schematic view of the shell air inlet;

[0024] Figure 3 It is a schematic view of the overall structure of the auxiliary unit on the supporting frame;

[0025] Figure 4 It is Figure 3 The enlarged view of A part in the middle;

[0026] Figure 5 is a schematic plan view of a half-section as a whole.

[0027] Explanation of reference numerals:

[0028] 1, shell; 11, air outlet; 12, air inlet; 13, support plate; 14, filter plate; 15, limiting block; 16, spring; 2, detection unit; 21, plug; 22, connecting wire; 23, control circuit board; 24, fixing sleeve; 25, heating element; 26, conical sleeve; 27, fitting part; 3, auxiliary unit; 31, cover plate; 32, clamping block; 33, support block; 34, touch head; 35, transmission rod; 36, rotating disc; 361, circular groove; 37, push block; 38, motor; 4, support cover; 41, clamping groove; 42, arc-shaped groove; 43, dust box; 44, baffle; 441, bent part. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings.

[0030] As shown in Figures 1-5 , an automobile air flow sensor comprises:

[0031] A shell 1, the shell 1 has an air outlet 11 and an air inlet 12, the air inlet 12 is provided with a support plate 13, and the support plate 13 is provided with a filter plate 14;

[0032] A detection unit 2, the detection unit 2 is arranged in the shell 1, and the detection unit 2 comprises a heating element 25 arranged between the air inlet 12 and the air outlet 11;

[0033] A support cover 4, the support cover 4 is clamped on the shell 1, and the support cover 4 is provided with an auxiliary unit 3, the auxiliary unit 3 comprises a push block 37, a support block 33 and a motor 38 arranged on the support block 33, the output end of the motor 38 is provided with a rotating disc 36 matched with the push block 37, and the push block 37 is clamped with a touch head 34;

[0034] The rotating disc 36 controls the push block 37 to reciprocally slide on the support block 33 to control the touch head 34 to knock the filter screen.

[0035] Specifically, the shell 1 is arranged on the automobile, and the support cover 4 is arranged on the shell 1 and can be removed to clean dust in the shell 1, thereby improving the maintenance efficiency of the automobile air flow sensor. During operation of the air flow sensor, the motor 38 operates to rotate the rotating disc 36, and the push block 37 is affected by the rotating disc 36 and reciprocally slides on the support block 33, that is, the contact head 34 intermittently knocks the filter plate 14 to remove dust on the filter plate 14. The contact head 34 is perpendicular to the filter plate 14, and the contact head 34 is a rubber head, thereby improving the tilting effect of the filter plate 14.

[0036] As a further provided embodiment of the utility model, the support cover 4 is provided with a cover plate 31 matched with the motor 38, the cover plate 31 is provided with a connecting line 22 matched with the detection unit 2, the support cover 4 is clamped with a clamping block 32, the clamping block 32 has a sliding groove, the support block 33 is arranged in the sliding groove, the motor 38 is of R260 type, the rotation of the rotating disc 36 is controlled by the motor 38, when the automobile air flow sensor detects, the signal is transmitted to the motor 38 through the connecting line 22 and the cover plate 31 to control the rotation of the motor 38, the cover plate 31 has a sealing effect, the support block 33 can slide on the sliding groove to enable the contact head 34 to contact the filter plate 14, thereby improving the dust removal effect.

[0037] As a further provided embodiment of the utility model, the support cover 4 is provided with a dust box 43, the dust box 43 has an opening, the opening is located below the filter plate 14, when the filter plate 14 contacts the contact head 34, dust falls into the opening of the dust box 43 and is stored in the dust box 43 for subsequent cleaning.

[0038] As a further provided embodiment of the utility model, the dust box 43 is clamped with a baffle 44, the baffle 44 is provided with a bent portion 441, the bent portion 441 reduces the backflow of dust falling into the dust box 43, thereby improving the dust collection effect.

[0039] As a further provided embodiment of the utility model, the support cover 4 is provided with a clamping groove 41 and an arc-shaped groove 42, the clamping groove 41 is matched with the shell 1, the arc-shaped groove 42 facilitates holding the support cover 4 to remove or install the support cover 4 on the shell 1. After long-term use, the clamping groove 41 is separated from the shell 1, the support cover 4 is removed from the shell 1 to remove dust inside, further, compared with the traditional bolt removal mode, the device facilitates cleaning of the internal dust and improves the maintenance efficiency of the automobile air flow sensor.

[0040] As the further provided embodiment of the utility model, the rotary disc 36 is provided with circular grooves 361 in linear array, the transmission rod 35 matched with the push block 37 is clamped in the circular grooves 361, when the transmission rod 35 is clamped in the circular grooves 361 close to the rotary disc 36, the frequency of the push block 37 reciprocating sliding is higher, on the contrary, when the transmission rod 35 is clamped in the circular grooves 361 far from the rotary disc 36, the sliding speed of the push block 37 is slowed down.

[0041] As the further provided embodiment of the utility model, the supporting plate 13 is provided with the spring 16 abutting the filter plate 14, the elastic force of the spring 16 is used to abut the filter plate 14 to be always in contact with the touch head 34, further, the shaking effect of the filter plate 14 is improved.

[0042] As the further provided embodiment of the utility model, the supporting plate 13 is provided with the limiting block 15, the sliding distance of the filter plate 14 is limited, the filter plate 14 is prevented from over-sliding and separating from the supporting plate 13.

[0043] As the further provided embodiment of the utility model, the detection unit 2 comprises the fixed sleeve 24, the plug-in connector 21 and the control circuit board 23, the plug-in connector 21 is electrically connected with the control circuit board 23, and both are arranged on the shell 1, the heating element 25 is arranged on the fixed sleeve 24 and matched with the control circuit board 23, when the automobile is detected, the control signal is sent to the heating element 25 and the motor 38 by the control circuit board 23, so as to control the temperature of the heating element 25 and the rotating speed of the motor 38, thereby accurate detection value is obtained.

[0044] As the further provided embodiment of the utility model, the shell 1 is provided with the conical sleeve 26, one end of the conical sleeve 26 is matched with the heating element 25, and the other end is provided with the abutting part 27, the abutting part 27 is arc-shaped, the abutting and sealing effect of the conical sleeve 26 and the shell 1 is improved, when the airflow enters the shell 1, the airflow is guided to contact the heating element 25 through the conical sleeve 26, thereby accurate value is obtained.

[0045] Working principle: first, the arc-shaped groove 42 is held to place the supporting cover 4 on the shell 1, the clamping groove 41 is clamped with the shell 1, the supporting block 33 is driven to slide on the clamping block 32, the touch head 34 is contacted with the filter plate 14, then in the process of using the air flow sensor, the airflow enters the heating element 25 from the air inlet 12, so that the temperature of the heating element 25 is reduced, at this time, the motor 38 is started, the push block 37 is controlled to reciprocate slide on the supporting block 33 through the rotary disc 36, so that the touch head 34 intermittently knocks the filter plate 14, so that the accumulation of dust on the filter plate 14 is reduced when the air flow sensor is used each time, so as to improve the accuracy of the detection value.

[0046] The technical scheme of the present application provides a solution significantly different from the prior art, and the parts not involved in the technical scheme of the present application are the same as or can be realized by using the prior art, and will not be described herein.

[0047] The technical scheme in the above embodiments has clearly and completely described the content of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. 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 the present application.

Claims

1. An automotive air flow sensor characterized by comprising: Include: The shell has air outlet and air inlet, the air inlet is provided with support plate, the support plate is provided with filter plate; Detection unit, the detection unit is arranged in the shell, and the detection unit includes heating element arranged between the air inlet and the air outlet; Support cover, the support cover is clamped on the shell, the support cover is provided with auxiliary unit, the auxiliary unit includes push block, support block and motor arranged on the support block, the output end of the motor is provided with rotating disc matched with the push block, the push block is clamped with touch head; The rotating disc drives the push block to reciprocate on the support block to control the touch head to knock the filter plate.

2. An air flow sensor for an automobile according to claim 1, wherein The support cover is provided with cover plate matched with the motor, the cover plate is matched with the detection unit, and the connecting line is arranged on the support cover; The support cover is clamped with clamping block, the clamping block has a sliding groove, and the support block is arranged in the sliding groove.

3. The automotive air flow sensor according to claim 1, wherein The support cover is provided with dust box, the dust box has an opening, and the opening is located below the filter plate.

4. An air flow sensor for an automobile according to claim 3, wherein The dust box is clamped with baffle, and the baffle is provided with bending part.

5. The automotive air flow sensor according to claim 1, wherein The support cover is respectively provided with clamping groove and arc groove, and the clamping groove is matched with the shell.

6. The automotive air flow sensor according to claim 1, wherein The rotating disc is linearly arranged with circular groove, and the transmission rod matched with the push block is clamped in the circular groove.

7. The automotive air flow sensor according to claim 1, wherein The support plate is provided with spring for pushing the filter plate.

8. An automotive air flow sensor according to claim 7, wherein The support plate is provided with limiting block.

9. The automotive air flow sensor according to claim 1, wherein The detection unit includes fixing sleeve, plug connector and control circuit board, the plug connector is electrically connected with the control circuit board, and both of them are arranged on the shell, the heating element is arranged on the fixing sleeve and matched with the control circuit board.

10. The automotive air flow sensor according to claim 9, wherein The shell is provided with conical sleeve, one end of the conical sleeve is matched with the heating element, and the other end is provided with abutting part.

Images