1. An automobile active air inlet grille is characterized in that: comprises a supporting plate (1), a motor (11), a telescopic grid (12) and a temperature controller; the temperature controller controls a motor (11); a group of motors (11) are uniformly and fixedly connected between the adjacent supporting plates (1), and the motors (11) are positioned at the two ends of the supporting plates (1); a telescopic grid (12) is fixedly connected between the adjacent motors (11), the telescopic grid (12) is close to the center of the support plate (1), and the fixed end of the telescopic grid (12) is close to the motor (11); a filter screen (13) is fixedly connected between the adjacent support plates (1) far away from the center of the support plates (1), and the filter screen (13) is positioned outside the telescopic grille (12); a first groove (15) is formed in each supporting plate (1) in a facing mode, and a driving belt (14) is sleeved at the position, corresponding to the first groove (15), of the output end of the motor (11); the sliding rods (3) are sleeved in the first grooves (15), the sliding rods (3) are connected with the first grooves (15) in a sliding mode, and the sliding rods (3) are fixedly connected with the transmission belt (14); the surface of each sliding rod (3) is fixedly connected with a first plate (31), a second plate (32) is fixedly connected to one side, located on the first plate (31), of each sliding rod (3), the second plate (32) is fixedly connected with the first plate (31), and one ends, close to the filter screen (13), of the first plate (31) and the second plate (32) are attached to the surface of the filter screen (13); a U-shaped groove (2) is formed in the position, close to the top of the filter screen (13), of the supporting plate (1), an opening in one side of the U-shaped groove (2) is located at the top of the telescopic grid (12), and an opening, far away from the telescopic grid (12), of the U-shaped groove (2) is located in the middle of the first groove (15); u type groove (2) endotheca is equipped with U type pole (21), and U type pole (21) one end links firmly with the flexible end top of flexible grid (12), and a hole (22) have been seted up to U type pole (21) other end bottom, and sliding connection has ejector pin (23) in a hole (22), and ejector pin (23) and a hole (22) are connected through reset spring, and the one end that U type pole (21) were kept away from in ejector pin (23) is located a groove (15), and the one end that U type pole (21) were kept away from in ejector pin (23) is the bulb setting.

2. The active grille shutter for an automobile of claim 1 wherein: the telescopic grating (12) is arranged in an arc shape, and the telescopic grating (12) is bent towards the center direction of the support plate (1); the filter screen (13) is arranged in an arc shape, and the filter screen (13) is bent towards the center direction of the support plate (1).

3. The active grille shutter for an automobile of claim 2 wherein: the first plate (31) is arranged in an arc shape, and the first plate (31) is bent to face a direction away from the center of the support plate (1).

4. The active grille shutter for an automobile of claim 3 wherein: the second plate (32) is arranged in an arc shape, and the arc outer surface of the second plate (32) is tangent to the arc outer surface of the first plate (31); one end of the second plate (32) close to the first plate (31) is located in the middle of the first plate (31), and the volume of the second plate (32) is smaller than that of the first plate (31).

5. The active grille shutter for an automobile of claim 4 wherein: a group of second holes (33) are uniformly formed in the first plate (31) and the second plate (32), and the second holes (33) are densely distributed on the first plate (31) and the second plate (32).

6. The active grille shutter for an automobile of claim 5 wherein: adjacent a fixing rod (4) is fixedly connected at the position of the outer side of the first groove (15) between the supporting plates (1), and brushes (41) are uniformly fixedly connected at one side of the fixing rod (4) close to the filter screen (13).

Background

The air inlet grille of the common automobile can utilize the injected air to cool the engine and the water tank when the automobile runs, if the automobile is just started in winter and runs, the temperature of the water tank of the engine is not high, and then the air is continuously injected to cool, so that the temperature of the water tank can be slowly increased, and the effect of warm air in the automobile is influenced. The vehicle with the active air inlet grille can reduce the outward heat dissipation of an engine compartment, so that the vehicle can be heated as soon as possible, the vehicle can enter a working state quickly, and the oil consumption is reduced.

The prior art also discloses a technical scheme of an automobile active air inlet grille, for example, a chinese patent with application number CN2019100761984 discloses an automobile active air inlet grille, which comprises a grille frame, active grille blades, driven grille blades, a driving mechanism and a transmission connecting rod, wherein two ends of the active grille blades and the driven grille blades are rotatably connected with the grille frame, the driving mechanism is in transmission connection with the active grille blades, one ends of the active grille blades and the driven grille blades, which are close to the transmission connecting rod, are respectively provided with a linkage shaft in a protruding manner, the transmission connecting rod is provided with an insertion hole, and the linkage shafts are inserted into the insertion holes, so that when the active grille blades are driven by the driving mechanism to overturn, the active grille blades drive the transmission connecting rod to rotate, and the transmission connecting rod drives the driven grille blades to overturn; however, this technical scheme has the shortcoming, this patent through the cooperation of initiative grid blade and driven grid blade for car locomotive portion possesses good aerodynamic performance, reduces whole car windage, makes the engine be in optimum horizontal temperature, but the car is in the in-process of going in winter, the inside temperature in engine compartment is lower, the initiative grid is the closed condition, impurity appears when the car is gone along with the air collision initiative grid surface, for example insect, stone and branch and leaf impurity, long-time back of going, the impurity pile is formed on the initiative grid surface, when the temperature is higher in the engine compartment, the initiative grid is opened, the air blows into the engine compartment inside with the impurity that piles up on the initiative grid surface, leads to impurity collision engine compartment internal components, influences the car and normally goes.

In view of the above, the present invention provides an active grille for an automobile, which solves the above problems.

Disclosure of Invention

The invention provides an automobile active air inlet grille, which aims to make up the defects of the prior art and solve the problem that when the temperature in an engine compartment is higher, an active grille is opened, and air blows impurities accumulated on the surface of the active grille into the engine compartment, so that the impurities collide with components in the engine compartment to influence the normal running of an automobile.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an automobile active air inlet grille, which comprises a supporting plate, a motor, a telescopic grille and a temperature controller, wherein the supporting plate is arranged on the front side of the motor; the temperature controller controls the motor; a group of motors are uniformly and fixedly connected between the adjacent supporting plates, and the motors are positioned at the two ends of the supporting plates; a telescopic grid is fixedly connected between the adjacent motors, the telescopic grid is close to the central position of the supporting plate, and the fixed end in the telescopic grid is close to the motor; a filter screen is fixedly connected between the adjacent support plates and far away from the center of the support plate, and the filter screen is positioned outside the telescopic grid; the supporting plates are provided with a first groove oppositely, and a driving belt is sleeved at the position, corresponding to the first groove, of the output end of the motor; sliding rods are sleeved in the first grooves and are connected with the first grooves in a sliding mode, and the sliding rods are fixedly connected with the transmission belt; the surface of each sliding rod is fixedly connected with a first plate, one side of each sliding rod, which is positioned on the first plate, is fixedly connected with a second plate, the second plate is fixedly connected with the first plate, and one ends, close to the filter screen, of the first plate and the second plate are both attached to the surface of the filter screen; a U-shaped groove is formed in the support plate close to the top of the filter screen, an opening in one side of the U-shaped groove is formed in the top of the telescopic grid, and an opening, far away from the telescopic grid, of the U-shaped groove is formed in the middle of the first groove; u type inslot cover is equipped with U type pole, and U type pole one end links firmly with the flexible end top of flexible grid, and U type pole other end bottom has seted up a hole, and an downthehole sliding connection has the ejector pin, and the ejector pin passes through reset spring with a hole and is connected, and the one end that U type pole was kept away from to the ejector pin is located a inslot, and the one end that U type pole was kept away from to the ejector pin is the bulb setting.

When the automobile active air inlet grille is used, the automobile active air inlet grille is arranged at the head part of an automobile through the supporting plate, the two ends of the supporting plate, which are positioned at the positions of exhaust holes blown to tires in the automobile, of the motor part are positioned, and the exhaust holes face the direction of the motor, so that air flow is exhausted from the exhaust holes through the surface of the telescopic grille when the telescopic grille is closed; after an automobile is started, a telescopic end in a telescopic grid is located at the initial end of a U-shaped groove, the telescopic grid is in an open state at the moment, a temperature controller monitors the temperature of an engine compartment, when the telescopic grid needs to be closed, the temperature controller controls a motor to rotate reversely, the motor drives a driving belt to move, the driving belt drives a sliding rod to move in a first groove, the sliding rod drives a mandril to move, and the mandril drives a U-shaped rod to slide in the U-shaped groove; the inner wall of one side, close to the motor, of the U-shaped groove limits the U-shaped rod to move continuously, the part, located in the first groove, of the ejector rod is arranged in a ball head mode, the sliding rod extrudes the ejector rod along the ball head part of the ejector rod, the ejector rod slides in the first hole after being extruded, the reset spring is stressed and contracts until the sliding rod crosses the ejector rod, the reset spring drives the ejector rod to reset after the ejector rod is not affected by extrusion force, the second sliding rod moves to contact the ejector rod, and the ejector rod is extruded and contracted again by the second sliding rod until the second sliding rod crosses the ejector rod; due to the arrangement of the filter screen, insect corpses and impurities after collision in the running process of the automobile are blocked, internal components in the engine compartment are protected, and the impurities are prevented from entering the interior of the engine compartment; the sliding rod drives the second plate to move along the surface of the filter screen, one side, close to the surface of the filter screen, of the second plate scrapes the filter screen, and insect corpses and impurities which collide on the surface of the filter screen in the driving process of an automobile are scraped, so that the cleaning degree of the surface of the filter screen is increased, and the situation that after long-time driving, the impurities are excessively accumulated on the surface of the filter screen to reduce the air permeability of the filter screen is prevented, and the internal heat dissipation effect of an engine compartment is influenced; when the second plate moves to the position of the motor, the scraped impurities are discharged from the exhaust hole along with the air flow; when the temperature in the engine compartment is higher than the maximum temperature value set by the temperature controller and the telescopic grid needs to be opened, the temperature controller controls the motor to rotate forwards, the motor drives the driving belt to move, the driving belt drives the sliding rod to move, the top of the sliding rod contacts and pushes the ejector rod, and the ejector rod drives the telescopic end of the telescopic grid to reset, so that the telescopic grid is opened when the temperature in the engine compartment is high; the sliding rod drives the first plate to move along the surface of the filter screen, and one side, close to the filter screen, of the first plate scrapes the surface of the filter screen, so that the cleaning degree of the surface of the filter screen is further increased; when the first plate moves to the motor position, the scraped impurities are discharged from the exhaust holes along with the air flow.

Preferably, the telescopic grating is arranged in an arc shape, and the telescopic grating is bent towards the center direction of the support plate; the filter screen sets up for the arc, and the filter screen is crooked towards backup pad central direction.

When the automobile exhaust hood is used, when the temperature in an automobile engine compartment is low, the temperature controller controls the motor to rotate reversely, the motor drives the driving belt to move, the driving belt drives the sliding rod to move, the sliding rod drives the first plate to move, the first plate drives the ejector rod to move, and the ejector rod drives the telescopic end of the telescopic grille to move, so that the telescopic grille is closed; through setting up the filter screen for the arc, when the air flow to the filter screen, some air passes the filter screen, and another part air is followed filter screen arc surface and is flowed by the filter screen blocking effect, blows to the exhaust hole of tire with filter screen surface part impurity in the air flow in-process to increase the clean degree on filter screen surface.

Preferably, the first plate is arranged in an arc shape, and the first plate is bent to face a direction away from the center of the support plate.

When the device is used, the motor drives the transmission belt to move, the transmission belt drives the sliding rod to slide in the first groove, and the sliding rod drives the first plate to move; when the motor rotates forwards, the first plate scrapes the surface of the filter screen, part of air moves along the arc-shaped inner surface of the first plate after contacting the arc-shaped inner surface of the first plate, and impurities scraped by the first plate are gathered at the contact position of the arc-shaped inner surface of the first plate and the filter screen under the influence of wind power, so that the cleaning degree of the surface of the filter screen is increased; when the filter screen arc surface intermediate position is moved in a number of boards, some air moves along a number of board arc internal surfaces and filter screen surface, will gather in a number of board arc internal surfaces and the partial impurity of filter screen contact position and blow away along the filter screen surface, increase the clean efficiency of filter screen arc surface.

Preferably, the second plate is arranged in an arc shape, and the arc outer surface of the second plate is tangent to the arc outer surface of the first plate; one end of the second plate, which is close to the first plate, is located in the middle of the first plate, and the volume of the second plate is smaller than that of the first plate.

When the motor is used, when the motor rotates reversely, the second plate scrapes the arc surface of the filter screen to scrape impurities on the arc surface of the filter screen, because the first plate is arranged in an arc shape, and one end of the second plate, which is close to the first plate, is positioned at the middle position of the first plate, an included angle is formed between the arc outer surface of the first plate and the inner surface of the second plate, the impurities are scraped by the second plate and then move along the surface of the second plate towards the direction of the first plate until the impurities move to the included angle between the first plate and the second plate, the impurities are limited by the first plate to stop moving, so that the impurities are collected at the included angle between the arc outer surface of the first plate and the inner surface of the second plate, the cleaning degree of the surface of the filter screen is increased, the air permeability of the telescopic grid is increased, when the second plate moves towards the middle position of the arc outer surface of the filter screen, the air flow drives the impurities to move, and the impurities move along the inner surface of the second plate until the impurities pass over the second plate, impurities passing through the second plate are influenced by air flow and contact the surface of the filter screen again, so that the filter screen is subjected to secondary pollution, and the cleaning effect is reduced; when the arc surface in a board moves to the exhaust hole direction of orientation, partial air receives the filter screen to stop the effect and moves to contact No. two board arc internal surfaces and a board arc surface along filter screen arc surface, and until the flow direction exhaust hole, impurity on No. two boards is influenced by air current and is discharged from the exhaust hole along a board arc surface motion.

Preferably, a group of second holes are uniformly formed in the first plate and the second plate, and the second holes are densely distributed in the first plate and the second plate.

When the filter screen is used, a group of second holes are formed in the first plate and the second plate and are densely distributed, so that the air permeability of the first plate and the second plate is increased, and the flow of air passing through the filter screen is increased; when a board scrapes the filter screen surface, because No. two holes have evenly been seted up on a board, make the car in-process that traveles at a high speed, most air passes a board, few part air receives a board separation to flow along the arc internal surface of a board, with impurity gathering in a board arc internal surface and filter screen contact position, increase the clean effect of a board to the filter screen surface, thereby increase the clean efficiency of a board, the air volume that prevents to receive the arc internal surface guide effect of a board is too much, lead to the air to blow the impurity flow that strikes off to a board too much, make impurity blow to being close to No. two board positions by the air, when causing the motor corotation, the impurity effect on No. two boards reduces.

Preferably, a fixed rod is fixedly connected to the position, located on the outer side of the first groove, between the adjacent supporting plates, and brushes are uniformly fixedly connected to one side, close to the filter screen, of the fixed rod.

When the temperature of the engine compartment is lower than the lowest temperature value set by the temperature controller, the temperature controller controls the motor to rotate reversely, the motor drives the driving belt to move, the driving belt drives the sliding rod to move, the sliding rod drives the second plate to move, when the second plate moves to the brush position, the brush firstly contacts the second plate, the brush drives impurities on the second plate to move along the arc-shaped inner surface of the second plate and the arc-shaped outer surface of the first plate, and therefore when the motor rotates reversely, the brush sweeps the impurities on the second plate and the cleaning degree of the second plate is increased; after the hair brush sweeps impurities on the second plate, part of air moves to contact the hair brush along the arc-shaped surface of the filter screen under the blocking action of the filter screen, and the air flow blows the impurities on the hair brush away until the impurities are discharged from the exhaust hole; when the temperature controller controls the motor to rotate forwards, the first plate moves to contact the hairbrush, the hairbrush sweeps impurities on the first plate, the cleaning degree of the first plate is increased, and therefore the cleaning degree of the filter screen is further increased; the foreign substances on the brush are discharged from the discharge hole by the influence of the air current.

The invention has the following beneficial effects:

1. according to the automobile active air inlet grille, the number one plate is arranged, when the temperature in an engine compartment is higher than the maximum temperature value set by the temperature controller, the temperature controller controls the motor to rotate forwards, the motor drives the driving belt to move, the driving belt drives the sliding rod to move, the sliding rod drives the number one plate to move, the top of the number one plate is in contact with and pushes the ejector rod, the ejector rod drives the telescopic end of the telescopic grille to reset, so that the telescopic grille is opened when the temperature in the engine compartment is high, one side, close to the filter screen, of the number one plate scrapes the surface of the filter screen, and the cleaning degree of the surface of the filter screen is increased.

2. According to the automobile active air inlet grille, the filter screen is arranged to be arc-shaped, when air flows to the filter screen, part of air passes through the filter screen, the other part of air flows along the arc surface of the filter screen under the blocking effect of the filter screen, and part of impurities on the surface of the filter screen are blown to exhaust holes of tires in an automobile in the air flowing process, so that the cleaning degree of the surface of the filter screen is increased.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic diagram of an embodiment of the present invention;

FIG. 3 is another schematic structural view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is a partial enlarged view at B in FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

in the figure: the device comprises a supporting plate 1, a motor 11, a telescopic grid 12, a filter screen 13, a transmission belt 14, a first groove 15, a U-shaped groove 2, a U-shaped rod 21, a first hole 22, a top rod 23, a sliding rod 3, a first plate 31, a second plate 32, a second hole 33, a fixing rod 4 and a brush 41.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the active grille for an automobile according to the present invention includes a support plate 1, a motor 11, a retractable grille 12 and a thermostat; the temperature controller controls the motor 11; a group of motors 11 are uniformly and fixedly connected between the adjacent supporting plates 1, and the motors 11 are positioned at two ends of the supporting plates 1; a telescopic grid 12 is fixedly connected between the adjacent motors 11, the telescopic grid 12 is close to the central position of the support plate 1, and the fixed end of the telescopic grid 12 is close to the motor 11; a filter screen 13 is fixedly connected between the adjacent support plates 1 and far away from the center of the support plate 1, and the filter screen 13 is positioned on the outer side of the telescopic grid 12; a first groove 15 is oppositely formed in each supporting plate 1, and a driving belt 14 is sleeved at the position, corresponding to the first groove 15, of the output end of the motor 11; the first grooves 15 are internally sleeved with sliding rods 3, the sliding rods 3 are connected with the first grooves 15 in a sliding mode, and the sliding rods 3 are fixedly connected with the transmission belt 14; the surface of each sliding rod 3 is fixedly connected with a first plate 31, one side of each sliding rod 3, which is positioned on the first plate 31, is fixedly connected with a second plate 32, the second plate 32 is fixedly connected with the first plate 31, and one ends, close to the filter screen 13, of the first plate 31 and the second plate 32 are attached to the surface of the filter screen 13; a U-shaped groove 2 is formed in the position, close to the top of the filter screen 13, of the supporting plate 1, an opening in one side of the U-shaped groove 2 is located at the top of the telescopic grid 12, and an opening, far away from the telescopic grid 12, of the U-shaped groove 2 is located in the middle of the first groove 15; u type groove 2 endotheca is equipped with U type pole 21, and U type pole 21 one end links firmly with the flexible end top of flexible grid 12, and a hole 22 has been seted up to U type pole 21 other end bottom, and sliding connection has ejector pin 23 in a hole 22, and ejector pin 23 passes through reset spring with a hole 22 and is connected, and the one end that U type pole 21 was kept away from to ejector pin 23 is located a groove 15, and the one end that U type pole 21 was kept away from to ejector pin 23 is the bulb setting.

When the active air inlet grille is used, the active air inlet grille is arranged at the head part of an automobile through the supporting plate 1, the two ends of the supporting plate 1, which are positioned at the motor 11 part, are positioned at the exhaust holes blown to tires in the automobile, and the exhaust holes face the motor 11 direction, so that air flow is exhausted from the exhaust holes through the surface of the telescopic grille 12 when the telescopic grille 12 is closed, the motor 11 is a conventional speed reducing motor 11 in the field, and the motor 11 is electrically connected with an electric power unit in the automobile through a temperature controller; after an automobile is started, a telescopic end in a telescopic grid 12 is located at the initial end of a U-shaped groove 2, the telescopic grid 12 is in an open state at the moment, a temperature controller monitors the temperature of an engine compartment, when the telescopic grid 12 needs to be closed, the temperature controller controls a motor 11 to rotate reversely, the motor 11 drives a transmission belt 14 to move, the transmission belt 14 drives a sliding rod 3 to move in a first groove 15, the sliding rod 3 drives a mandril 23 to move, the mandril 23 drives a U-shaped rod 21 to slide in the U-shaped groove 2, the acting force of the sliding rod 3 pushing the mandril 23 is smaller than the elastic force of a return spring of the U-shaped rod 21 without limiting action, the U-shaped rod 21 drives the telescopic end in the telescopic grid 12 to move away from the fixed end of the telescopic grid 12, and the telescopic grid 12 is in a closed state when the mandril 23 drives the U-shaped rod 21 to slide to the tail end of the U-shaped groove 2; the inner wall of one side of the U-shaped groove 2 close to the motor 11 limits the U-shaped rod 21 to continue moving, because the part of the ejector rod 23 positioned in the first groove 15 is arranged by a ball head, the ejector rod 23 is extruded by the sliding rod 3 along the ball head part of the ejector rod 23, the ejector rod 23 slides in the first hole 22 after being extruded, the reset spring is stressed and contracts until the sliding rod 3 passes through the ejector rod 23, the reset spring drives the ejector rod 23 to reset after the ejector rod 23 is not affected by the extrusion force, the second sliding rod 3 moves to contact the ejector rod 23, and the ejector rod 23 is extruded and contracted by the second sliding rod 3 again until the second sliding rod 3 passes through the ejector rod 23; due to the arrangement of the filter screen 13, insect corpses and impurities after collision in the running process of the automobile are blocked, internal components in the engine compartment are protected, and the impurities are prevented from entering the interior of the engine compartment; the sliding rod 3 drives the second plate 32 to move along the surface of the filter screen 13, one side, close to the surface of the filter screen 13, of the second plate 32 scrapes the filter screen 13, insect corpses and impurities which collide on the surface of the filter screen 13 in the driving process of an automobile are scraped, so that the cleaning degree of the surface of the filter screen 13 is increased, and the situation that after long-time driving, the impurities are excessively accumulated on the surface of the filter screen 13 to reduce the air permeability of the filter screen 13 is prevented, and the internal heat dissipation effect of an engine compartment is influenced; when the second plate 32 moves to the position of the motor 11, the scraped impurities are discharged from the exhaust holes along with the air flow; when the temperature in the engine compartment is higher than the maximum temperature value set by the temperature controller and the telescopic grille 12 needs to be opened, the temperature controller controls the motor 11 to rotate forwards, the motor 11 drives the transmission belt 14 to move, the transmission belt 14 drives the sliding rod 3 to move, the top of the sliding rod 3 contacts and pushes the ejector rod 23, and the ejector rod 23 drives the telescopic end of the telescopic grille 12 to reset, so that the telescopic grille 12 is opened when the temperature in the engine compartment is high; the sliding rod 3 drives the first plate 31 to move along the surface of the filter screen 13, and one side, close to the filter screen 13, of the first plate 31 scrapes the surface of the filter screen 13, so that the cleaning degree of the surface of the filter screen 13 is further increased; when the first plate 31 moves to the position of the motor 11, the scraped impurities are discharged from the exhaust holes along with the air flow.

As an embodiment of the present invention, the expansion grid 12 is disposed in an arc shape, and the expansion grid 12 is bent toward the center of the support plate 1; the filter screen 13 is the arc setting, and filter screen 13 crooked orientation backup pad 1 central direction.

When the temperature control device is used, when the temperature in an automobile engine compartment is low, the temperature controller controls the motor 11 to rotate reversely, the motor 11 drives the transmission belt 14 to move, the transmission belt 14 drives the sliding rod 3 to move, the sliding rod 3 drives the first plate 31 to move, the first plate 31 drives the ejector rod 23 to move, the ejector rod 23 drives the telescopic end of the telescopic grille 12 to move, so that the telescopic grille 12 is closed, a large amount of air enters the automobile head part of an automobile from the front face of the automobile in the automobile driving process, and the air is influenced by the arc surface of the telescopic grille 12 and blows to the exhaust holes of tires in the automobile along the arc surface of the telescopic grille 12 when passing through the filter screen 13 and contacting with the surface of the telescopic grille 12 due to the arc shape of the telescopic grille 12, so that the air resistance in the automobile driving process is reduced, and the power loss of the automobile is reduced; by arranging the sieve 13 in an arc shape, when air flows to the sieve 13, part of the air passes through the sieve 13, and the other part of the air flows along the arc-shaped surface of the sieve 13 under the blocking action of the sieve 13, so that part of impurities on the surface of the sieve 13 are blown to exhaust holes of the tire in the automobile in the air flowing process, and the cleanness degree of the surface of the sieve 13 is increased.

In one embodiment of the present invention, the first plate 31 is disposed in an arc shape, and the first plate 31 is curved to face away from the center of the support plate 1.

When the device is used, the motor 11 drives the transmission belt 14 to move, the transmission belt 14 drives the sliding rod 3 to slide in the first groove 15, and the sliding rod 3 drives the first plate 31 to move; when the motor 11 rotates forwards, the first plate 31 scrapes the surface of the filter screen 13, part of air moves along the arc-shaped inner surface of the first plate 31 after contacting the arc-shaped inner surface of the first plate 31, and impurities scraped by the first plate 31 are gathered at the contact position of the arc-shaped inner surface of the first plate 31 and the filter screen 13 under the influence of wind force, so that the cleaning degree of the surface of the filter screen 13 is increased; when one plate 31 moves in the middle of the arc-shaped outer surface of the filter screen 13, part of air moves along the arc-shaped inner surface of the one plate 31 and the surface of the filter screen 13, and part of impurities collected at the contact position of the arc-shaped inner surface of the one plate 31 and the filter screen 13 are blown away along the surface of the filter screen 13, so that the cleaning efficiency of the arc-shaped outer surface of the filter screen 13 is improved.

As an embodiment of the present invention, the second plate 32 is disposed in an arc shape, and the arc outer surface of the second plate 32 is tangent to the arc outer surface of the first plate 31; one end of the second plate 32 close to the first plate 31 is located in the middle of the first plate 31, and the volume of the second plate 32 is smaller than that of the first plate 31.

When the motor 11 is used, when the motor 11 rotates reversely, the second plate 32 scrapes the arc surface of the filter screen 13 to scrape off impurities on the arc surface of the filter screen 13, because the first plate 31 is arranged in an arc shape, and one end of the second plate 32 close to the first plate 31 is positioned in the middle of the first plate 31, an included angle is formed between the arc outer surface of the first plate 31 and the inner surface of the second plate 32, the impurities are scraped by the second plate 32 and then move towards the first plate 31 along the surface of the second plate 32 until the impurities move to the included angle position between the first plate 31 and the second plate 32, the impurities are limited by the first plate 31 to stop moving, so that the impurities are collected at the included angle position between the arc outer surface of the first plate 31 and the inner surface of the second plate 32, the cleaning degree of the surface of the filter screen 13 is increased, the air permeability of the telescopic grid 12 is increased, and the impurities are prevented from moving driven by the air flow when the second plate 32 moves towards the middle of the arc outer surface of the filter screen 13, the impurities move along the inner surface of the second plate 32 until the impurities pass over the second plate 32, and the impurities passing over the second plate 32 are influenced by the air flow to contact the surface of the filter screen 13 again, so that the filter screen 13 is polluted secondarily, and the cleaning effect is reduced; when the arc-shaped outer surface in the first plate 31 moves towards the exhaust hole, part of air is blocked by the filter screen 13 and moves along the arc-shaped surface of the filter screen 13 to contact the arc-shaped inner surface of the second plate 32 and the arc-shaped outer surface of the first plate 31 until the air flows to the exhaust hole, and impurities on the second plate 32 are influenced by air flow and move along the arc-shaped outer surface of the first plate 31 to be exhausted from the exhaust hole.

As an embodiment of the present invention, a set of second holes 33 is uniformly formed on the first plate 31 and the second plate 32, and the second holes 33 are densely distributed on the first plate 31 and the second plate 32.

When the filter screen is used, the first plate 31 and the second plate 32 are provided with the group of second holes 33, and the second holes 33 are densely distributed, so that the air permeability of the first plate 31 and the second plate 32 is increased, and the flow of air passing through the filter screen 13 is increased; when the first plate 31 scrapes the surface of the filter screen 13, because the second holes 33 are uniformly formed in the first plate 31, most of air passes through the first plate 31, and a small part of air is separated by the first plate 31 and flows along the arc-shaped inner surface of the first plate 31, so that impurities are gathered at the contact position of the arc-shaped inner surface of the first plate 31 and the filter screen 13, the cleaning effect of the first plate 31 on the surface of the filter screen 13 is increased, the cleaning efficiency of the first plate 31 is increased, too much air quantity under the guiding action of the arc-shaped inner surface of the first plate 31 is prevented, the impurity flow rate of the air blown to the first plate 31 to scrape is too much, the impurities are blown to the position close to the second plate 32 by the air, and when the motor 11 rotates forwards, the impurity effect on the second plate 32 is reduced.

As an embodiment of the invention, a fixing rod 4 is fixedly connected between adjacent supporting plates 1 at the outer side of the first groove 15, and brushes 41 are uniformly fixedly connected on one side of the fixing rod 4 close to the filter screen 13.

When the temperature in the engine compartment is lower than the lowest temperature value set by the temperature controller, the temperature controller controls the motor 11 to rotate reversely, the motor 11 drives the transmission belt 14 to move, the transmission belt 14 drives the sliding rod 3 to move, the sliding rod 3 drives the second plate 32 to move, when the second plate 32 moves to the position of the brush 41, the brush 41 firstly contacts the second plate 32, the brush 41 drives impurities on the second plate 32 to move along the arc-shaped inner surface of the second plate 32 and the arc-shaped outer surface of the first plate 31, so that when the motor 11 rotates reversely, the brush 41 sweeps the impurities on the second plate 32, and the cleaning degree on the second plate 32 is increased; after the brush 41 sweeps away impurities on the second plate 32, part of air moves to contact the brush 41 along the arc-shaped surface of the filter screen 13 under the blocking action of the filter screen 13, and the air flow blows away the impurities on the brush 41 until the impurities are discharged from the exhaust hole; when the temperature controller controls the motor 11 to rotate forwards, the first plate 31 moves to contact the brush 41, the brush 41 sweeps impurities on the first plate 31, the cleaning degree on the first plate 31 is increased, and the cleaning degree of the filter screen 13 is further increased; the foreign substances on the brush 41 are discharged from the discharge hole by the influence of the air current.

The specific working process is as follows:

after an automobile is started, a telescopic end in a telescopic grid 12 is located at the initial end of a U-shaped groove 2, the telescopic grid 12 is in an open state at the moment, a temperature controller monitors the temperature of an engine compartment, when the telescopic grid 12 needs to be closed, the temperature controller controls a motor 11 to rotate reversely, the motor 11 drives a driving belt 14 to move, the driving belt 14 drives a sliding rod 3 to move in a first groove 15, the sliding rod 3 drives a mandril 23 to move, the mandril 23 drives a U-shaped rod 21 to slide in the U-shaped groove 2, the U-shaped rod 21 drives the telescopic end in the telescopic grid 12 to move towards the direction far away from the fixed end of the telescopic grid 12, and when the mandril 23 drives the U-shaped rod 21 to slide to the tail end of the U-shaped groove 2, the telescopic grid 12 is in a closed state; when the temperature in the engine compartment is higher than the maximum temperature value set by the temperature controller and the telescopic grille 12 needs to be opened, the temperature controller controls the motor 11 to rotate forwards, the motor 11 drives the transmission belt 14 to move, the transmission belt 14 drives the sliding rod 3 to move, the top of the sliding rod 3 contacts and pushes the ejector rod 23, and the ejector rod 23 drives the telescopic end of the telescopic grille 12 to reset, so that the telescopic grille 12 is opened when the temperature in the engine compartment is high; the sliding rod 3 drives the first plate 31 to move along the surface of the filter screen 13, and one side, close to the filter screen 13, of the first plate 31 scrapes the surface of the filter screen 13, so that the cleaning degree of the surface of the filter screen 13 is further increased; when the first plate 31 moves to the position of the motor 11, the scraped impurities are discharged from the exhaust holes along with the air flow; when the air passes through the filter screen 13 and contacts the surface of the telescopic grille 12, the air is influenced by the arc-shaped surface of the telescopic grille 12 and blows into the automobile to the exhaust holes of the tires along the arc-shaped surface of the telescopic grille 12, so that the air resistance applied to the automobile in the running process is reduced; when the motor 11 rotates forwards, the first plate 31 scrapes the surface of the filter screen 13, part of air moves along the arc-shaped inner surface of the first plate 31 after contacting the arc-shaped inner surface of the first plate 31, impurities scraped by the first plate 31 are gathered at the contact position of the arc-shaped inner surface of the first plate 31 and the filter screen 13 under the influence of wind force, and when the first plate 31 moves to the middle position of the arc-shaped outer surface of the filter screen 13, part of air moves along the arc-shaped inner surface of the first plate 31 and the surface of the filter screen 13, and part of impurities gathered at the contact position of the arc-shaped inner surface of the first plate 31 and the filter screen 13 are blown away along the surface of the filter screen 13; when the motor 11 rotates reversely, the second plate 32 scrapes the arc-shaped surface of the filter screen 13 to scrape impurities on the arc-shaped surface of the filter screen 13, the impurities are scraped by the second plate 32 and then move towards the first plate 31 along the surface of the second plate 32 until the impurities move to the included angle between the first plate 31 and the second plate 32, and when the arc-shaped outer surface of the first plate 31 moves towards the exhaust hole, the impurities on the second plate 32 move along the arc-shaped outer surface of the first plate 31 under the influence of air flow until the impurities are exhausted from the exhaust hole; when the first plate 31 scrapes the surface of the filter screen 13, most of air passes through the first plate 31, and a small part of air is blocked by the first plate 31 to flow along the arc-shaped inner surface of the first plate 31, so that impurities are gathered at the contact position of the arc-shaped inner surface of the first plate 31 and the filter screen 13; when second board 32 moves to brush 41 position, brush 41 at first contacts second board 32, and brush 41 drives the impurity on second board 32 along second board 32 arc internal surface and the motion of a board 31 arc surface for when motor 11 reverses, brush 41 sweeps away the impurity on second board 32, and brush 41 sweeps away the impurity on second board 32 the back, and partial air is blockked the effect by filter screen 13 and is followed filter screen 13 arc surface motion to contact brush 41, and the air current blows away the impurity on brush 41 until discharging from the exhaust hole.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.