Heat dissipation structure of automobile front bumper grille and implementation method of heat dissipation structure

Abstract

The invention relates to the technical field of automobile grilles, in particular to a heat dissipation structure of an automobile front bumper grille and an implementation method thereof.The heat dissipation structure comprises a connecting base, a grille body is fixedly connected to the front end of the connecting base, a supporting base A is fixedly connected to the position, located on the inner wall of the connecting base, of the center of the rear portion of the grille body, and buffer blocks are arranged on the two sides of the supporting base A; the two buffering blocks are distributed at the two ends of the grille body, and buffering assemblies are fixedly connected to the front ends of the supporting seats A and the buffering blocks; when the low-temperature starting or high-speed cruising working condition is detected, the blocking net is controlled to be unfolded to reduce the air inflow, the engine warming-up speed is increased, and wind resistance is reduced; under the working condition of high temperature or rapid acceleration, the blocking net is automatically withdrawn, the air inlet area is increased, the cooling efficiency is improved, when low-speed collision occurs, the grating strips are pressed to push the buffer blocks to move backwards, longitudinal impact force is converted into transverse extrusion motion of the force unloading blocks through the inclined face ejector blocks, multidirectional energy dispersion and absorption are achieved, and local impact stress is effectively relieved.

Description

Technical Field

[0001] This invention relates to the field of automotive grille technology, and more particularly to a heat dissipation structure for an automotive front bumper grille and its implementation method. Background Technology

[0002] The car radiator grille is located at the front of the car and serves as a window for heat exchange between the components around the combustion chamber and the outside. In addition to decorating the overall appearance of the car, it also plays a role in controlling the car's thermal balance.

[0003] In most cases, the radiator grille needs to have a large contact area with the outside environment because the engine generates a lot of heat around its casing. If it is not cooled in time, it may lead to a shorter lifespan of parts and failure of some parts. However, in some operating conditions, the car's air intake grille needs to be closed or have its opening reduced. For example, when driving at high speed, the car is in a high-speed airflow, and the heat dissipation caused by the airflow is already sufficient. However, if the air intake grille is wide open, it will bring greater resistance to the car's movement, thereby indirectly increasing fuel consumption and also affecting the car's stability and safety. In extremely cold regions, there is a large temperature difference between the components near the car engine and the outside environment. This temperature difference can cause the engine to cool down rapidly, or even become overcooled, affecting the engine's warm-up requirements and thus being detrimental to the overall operation of the car.

[0004] However, the air intakes of existing car grilles are fixed, which cannot meet the needs of various working conditions and driving environments. Furthermore, car grilles have relatively poor impact resistance and are easily deformed or broken in minor collisions, which not only affects the vehicle's appearance but may also affect its safety performance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a heat dissipation structure for a car front bumper grille and its implementation method. This solves the problems that the air inlets of existing car air intake grilles are fixed, which cannot meet the needs of various working conditions and driving environments of the car. Furthermore, car grilles have relatively poor impact resistance and are easily deformed or broken in minor collisions, which not only affects the aesthetics of the vehicle but may also affect its safety performance.

[0006] The technical solution of the present invention is as follows: a heat dissipation structure for a front bumper grille of an automobile and its implementation method, comprising a connecting seat, a grille body fixedly connected to the front end of the connecting seat, a support seat A fixedly connected to the center of the rear of the grille body located on the inner wall of the connecting seat, buffer blocks provided on both sides of the support seat A, the two buffer blocks being distributed at both ends of the grille body, a buffer assembly fixedly connected to the front end of the support seat A and the buffer blocks, one end of the buffer assembly extending to the inner side of the grille body, the buffer assembly being used for connection between the support seat A and the buffer blocks and the grille body, guide seats provided on both sides of the support seat A, one end of the guide seats extending to the outer side of the buffer blocks, the two guide seats being used for connection between the support seat A and the buffer blocks, displacement seats movably connected to the rear ends of the two guide seats, a transmission assembly provided at the center of the two displacement seats located at the rear end of the support seat A, the transmission assembly being used for connection between the two displacement seats and the support seat A, and a buffer assembly provided on one side of the two displacement seats. A barrier net is provided, with one end of the barrier net located inside the support base A and a roller installed thereon. The other end of the barrier net extends to the inside of the support base A and connects to the roller. The buffer assembly includes a buffer base, with a buffer block movably connected to the front end of the buffer base. Both sides of the rear end face of the buffer block are movably connected to stress relief blocks. When the buffer block is displaced under force, the buffer block will transfer the force to the stress relief blocks, causing the buffer block to squeeze the stress relief blocks out of the buffer base. The transmission assembly includes a drive base, with a servo motor fixedly connected to the inside of the drive base. A transmission rod is fixedly connected to the output end of the servo motor. One end of the transmission rod is rotatably connected to a lead screw A. Both ends of the lead screw A extend to the outside of the two displacement seats and are rotatably connected to the support base B. When the servo motor starts, the servo motor drives the transmission rod to rotate. During the rotation of the transmission rod, the transmission rod transmits the power of the servo motor to the lead screw A, causing the lead screw A to drive the two displacement seats to move outside the guide seat.

[0007] Preferably, the front end face of the connecting seat is provided with an installation groove. When the grille body is connected to the connecting seat, the rear end of the grille body is inserted into the inner side of the installation groove. Fixed seats B and fixed seats A are respectively provided at both ends of the grille body and on both sides of the connecting seat. Bolt holes are provided on the inner side of both fixed seats B and fixed seats A. When the connecting seat is connected to the grille body, the connecting seat and the grille body can be connected through fixed seat B, and the connecting seat can be connected to the car through fixed seat A.

[0008] Preferably, the grid body includes grid strips, seven of which are provided. Grid blocks are evenly distributed among the seven grid strips, and the seven grid strips are supported and connected by the grid blocks. The front end of the buffer block has a slot, which is an I-shaped notch. The shape of the slot is consistent with the shape of the rear end of the grid strip. When the grid body is connected to the connecting seat, the rear end of the grid strip is inserted into the inside of the slot.

[0009] Preferably, the buffer block has buffer grooves on both sides of the inner wall of the buffer base, the two sides of the buffer block are inserted into the inner side of the buffer grooves, the buffer block is connected to the buffer base through the buffer grooves, and a top block is provided at the rear end of the buffer block. Both sides of the top block are inclined surfaces, and two stress relief blocks are attached to the top block through the inclined surfaces.

[0010] Preferably, the center of the two stress relief blocks is fixedly connected to the inner wall of the buffer base with a connecting spring. The two stress relief blocks are movably connected to the buffer base through the connecting spring. When the buffer block is subjected to force and buffered, the two stress relief blocks reset the buffer block through the connecting spring.

[0011] Preferably, the grid blocks are inclined blocks, and the surface of the barrier net is provided with partitions that are symmetrical to the grid blocks in the opposite direction. When the barrier net is fully extended, the partitions and grid blocks are arranged alternately. Both ends of the roller are provided with rotating grooves on the inner wall of the support base A. Both ends of the roller extend to the inner side of the rotating groove. The inner wall of the rotating groove is provided with a torsion spring. The roller is movably connected to the support base A through the torsion spring. When the barrier net is retracted, the barrier net is stored by rotating the roller.

[0012] Preferably, a bevel gear is provided at one end of the transmission rod and at the center of the lead screw A. When the transmission rod rotates, the transmission rod, in conjunction with the bevel gear, drives the lead screw A to rotate. The lead screw A is a double-threaded lead screw, and the threads at both ends of the lead screw A are symmetrical to each other. When the lead screw A rotates, the lead screw A drives the two displacement seats to make relative displacements on the outside of the guide seat.

[0013] Preferably, positioning blocks are evenly distributed on the inner wall of the connecting seat at both ends of the barrier net. Both ends of the positioning blocks are inclined surfaces. The bottom end of the positioning block is movably connected to the inner wall of the connecting seat with an ejector spring. The positioning block is movably connected to the connecting seat through the ejector spring. The top end of the positioning block is provided with a positioning groove on the inner wall of the barrier net. When the barrier net is fully extended, the top end of the positioning block is pushed into the inner side of the positioning groove.

[0014] Preferably, a temperature control device and a power interface are respectively provided at both ends of the rear end face of the support base A. The temperature control device has a built-in temperature sensor, and a wiring socket is opened at the rear end of the temperature control device. The power interface is electrically connected to the temperature control device and the drive base.

[0015] This invention provides another technical solution, a method for implementing a car front bumper grille, comprising the following steps:

[0016] Step 1: Connect the connecting seat to the car through the fixing seat A, and then connect the grille body through the fixing seat B and the connecting seat. Since the two ends of the rear end face of the inner support seat A of the connecting seat are respectively equipped with a temperature control device and a power interface, connect the engine temperature detection line to the wiring socket at the rear end of the temperature control device, and then connect the power supply housing to the car power supply, so that when the car starts, the car grille will start at the same time.

[0017] Step 2: When the car is running normally (at a suitable temperature), the grille is retracted and the grille body is fully open to ensure normal air intake and heat dissipation. When the car starts at a low temperature or cruises at high speed, the temperature control device detects the low temperature or high speed signal of the car and sends a command to start the servo motor. The servo motor, together with the transmission rod, drives the lead screw A to rotate. During the rotation of the lead screw A, the two displacement seats move relative to each other, thereby pulling out the grille from the inside of the support seat A and locking it. In this way, the grille is partially or completely closed by the grille, reducing the air intake, improving thermal efficiency or reducing wind resistance.

[0018] Step 3: When the car is operating at high temperature / accelerating rapidly, the temperature control device detects the high temperature of the car engine, and the control system commands the retraction of the screen. The servo motor reverses, causing the displacement seat to separate from the support seat B. During the separation of the displacement seat, the torsion spring works with the roller to retract the screen, so that the grille body is fully opened, enhancing the cooling effect.

[0019] Step 4: In a low-speed collision (such as a pedestrian collision), the grille body is impacted by external force. The grille bars inside the grille body press the buffer block backward. The buffer block, together with the top block, pushes the stress relief block to be squeezed out laterally. The stress relief block absorbs the impact energy. Subsequently, the stress relief block, together with the connecting spring, resets after a delay, so that the grille bar structure returns to its original shape, improving the stability of the grille body.

[0020] The beneficial effects of this invention are:

[0021] The heat dissipation structure of the car's front bumper grille integrates a temperature control device at the rear end of support A. This device can monitor the engine compartment or ambient temperature in real time. When low-temperature start-up or high-speed cruising is detected, the grille automatically deploys to reduce air intake, accelerate engine warm-up, and reduce wind resistance. Under high-temperature or rapid acceleration conditions, the grille automatically retracts to increase the air intake area and improve cooling efficiency. Furthermore, a buffer assembly consisting of a buffer block, a stress-relieving block, a top block, and connecting springs is installed behind the grille body. In the event of a low-speed collision (such as a pedestrian collision), the grille bars are compressed, pushing the buffer block backward. The inclined top block converts the longitudinal impact force into the lateral extrusion motion of the stress-relieving block, achieving multi-directional energy dispersion and absorption. This effectively alleviates local impact stress and improves the buffer performance and pedestrian protection capabilities of the front bumper area. Attached Figure Description

[0022] Figure 1 The diagram shown is a three-dimensional structural illustration of the present invention. Figure 1 ;

[0023] Figure 2 The diagram shown is a three-dimensional structural illustration of the present invention. Figure 2 ;

[0024] Figure 3 The diagram shown is a structural schematic of the connector of the present invention;

[0025] Figure 4 The diagram shown is a structural schematic of the buffer base of the present invention;

[0026] Figure 5 The diagram shown is a schematic representation of the structure of the buffer block of the present invention.

[0027] Figure 6 The diagram shown is a schematic representation of the structure of the positioning block of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Connecting seat; 2. Grille body; 3. Fixed seat A; 4. Fixed seat B; 5. Grille bar; 6. Grille block; 7. Support seat A; 8. Buffer block; 9. Support seat B; 10. Displacement seat; 11. Barrier net; 12. Drive seat; 13. Temperature control device; 14. Positioning block; 15. Guide seat; 17. Transmission rod; 18. Lead screw A; 19. Buffer base; 20. Top block; 21. Unloading block; 22. Connecting spring; 23. Roller; 24. Ejection spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-6This invention provides an embodiment of a heat dissipation structure for a car front bumper grille and its implementation method, including a connecting seat 1. A grille body 2 is fixedly connected to the front end of the connecting seat 1. A support seat A7 is fixedly connected to the center of the rear of the grille body 2, located on the inner wall of the connecting seat 1. Buffer blocks 8 are provided on both sides of the support seat A7, distributed at both ends of the grille body 2. Guide seats 15 are provided on both sides of the support seat A7, with one end of each guide seat 15 extending to the outer side of the buffer block 8. The two guide seats 15 are used for connection between the support seat A7 and the buffer block 8. Displacement seats 10 are movably connected to the rear ends of both guide seats 15, with one side of each displacement seat 10... A screen 11 is provided, with a roller 23 located inside the support base A7 at one end of the screen 11. The other end of the screen 11 extends into the support base A7 and connects to the roller 23. A mounting groove is provided on the front face of the connecting seat 1. When the grille body 2 is connected to the connecting seat 1, the rear end of the grille body 2 is inserted into the mounting groove. Fixing seats B4 and A3 are provided at both ends of the grille body 2 and on both sides of the connecting seat 1, respectively. Bolt holes are provided on the inner sides of both fixing seats B4 and A3. When the connecting seat 1 is connected to the grille body 2, the connecting seat 1 and the grille body 2 can be connected via fixing seat B4. The connecting seat 1 can be connected to the vehicle via fixing seat A3. Next, the grid body 2 includes grid bars 5, of which seven are provided. Grid blocks 6 are evenly distributed among the seven grid bars 5. The seven grid bars 5 are supported and connected by the grid blocks 6. The front end of the buffer block 8 has a slot with an I-shaped notch, the shape of which is consistent with the rear end shape of the grid bar 5. When the grid body 2 is connected to the connecting seat 1, the rear end of the grid bar 5 is inserted into the inner side of the slot. The grid block 6 is an inclined block. The surface of the barrier net 11 is provided with partitions that are symmetrical to the grid blocks 6. When the barrier net 11 is fully unfolded, the partitions and grid blocks 6 are arranged alternately. Both ends of the roller 23 have rotating grooves on the inner wall of the support seat A7. The end extends to the inner side of the rotating groove, and the inner wall of the rotating groove is provided with a torsion spring. The roller 23 is movably connected to the support seat A7 through the torsion spring. When the net 11 is retracted, the roller 23 rotates to store the net 11. The two ends of the net 11 are evenly distributed with positioning blocks 14 on the inner wall of the connecting seat 1. Both ends of the positioning blocks 14 are inclined. The bottom end of the positioning blocks 14 is movably connected to the inner wall of the connecting seat 1 with an ejection spring 24. The positioning blocks 14 are movably connected to the connecting seat 1 through the ejection spring 24. The top end of the positioning blocks 14 is provided with a positioning groove on the inner wall of the net 11. When the net 11 is fully extended, the top end of the positioning blocks 14 is pushed into the inner side of the positioning groove.

[0031] Please see Figures 1-2In this embodiment, a temperature control device 13 and a power interface are respectively provided at both ends of the rear end face of the support base A7. The temperature control device 13 has a built-in temperature sensor and a wiring socket is provided at the rear end of the temperature control device 13. The power interface is electrically connected to the temperature control device 13 and the drive base 12.

[0032] Please see Figures 3-4 In this embodiment, a buffer assembly is fixedly connected to the front end of both the support base A7 and the buffer block 8. One end of the buffer assembly extends to the inner side of the grid body 2. The buffer assembly is used to connect the support base A7 and the buffer block 8 with the grid body 2. The buffer assembly includes a buffer base 19, with the buffer block 8 movably connected to the front end of the buffer base 19. Force-relieving blocks 21 are movably connected to both sides of the rear end face of the buffer block 8. When the buffer block 8 is displaced under force, it transmits the force to the force-relieving blocks 21, causing the buffer block 8 to squeeze the force-relieving blocks 21 out of the buffer base 19. A buffer groove is provided on the inner wall of the buffer base 19. The two sides of the buffer block 8 are inserted into the inner side of the buffer groove. The buffer block 8 is connected to the buffer base 19 through the buffer groove. A top block 20 is provided at the rear end of the buffer block 8. Both sides of the top block 20 are inclined surfaces. Two stress relief blocks 21 are attached to the top block 20 through the inclined surfaces. The center of the two stress relief blocks 21 is located on the inner wall of the buffer base 19 and is fixedly connected to a connecting spring 22. The two stress relief blocks 21 are movably connected to the buffer base 19 through the connecting spring 22. When the buffer block 8 is subjected to force buffering, the two stress relief blocks 21 reset the buffer block 8 through the connecting spring 22.

[0033] Please see Figure 5 Figure 6 In this embodiment, a transmission assembly is provided at the center of the two displacement seats 10 at the rear end of the support seat A7. The transmission assembly is used to connect the two displacement seats 10 and the support seat A7. The transmission assembly includes a drive seat 12, a servo motor is fixedly connected to the inner side of the drive seat 12, and a transmission rod 17 is fixedly connected to the output end of the servo motor. One end of the transmission rod 17 is rotatably connected to a lead screw A18, and both ends of the lead screw A18 extend to the outer side of the two displacement seats 10 and are rotatably connected to the support seat B9. When the servo motor is started, the servo motor drives the transmission rod 17 to rotate. During rotation, transmission rod 17 transmits the power from the servo motor to lead screw A18, causing lead screw A18 to drive the two displacement seats 10 to move outside the guide seat 15. Bevel gears are provided at one end of transmission rod 17 and at the center of lead screw A18. When transmission rod 17 rotates, transmission rod 17, in conjunction with bevel gears, drives lead screw A18 to rotate. Lead screw A18 is a double-threaded lead screw, and the threads at both ends of lead screw A18 are symmetrical. When lead screw A18 rotates, lead screw A18 drives the two displacement seats 10 to move relative to each other outside the guide seat 15.

[0034] During operation, the connecting seat 1 is connected to the car via the fixing seat A3. Then, the grille body 2 is connected to the connecting seat 1 via the fixing seat B4. Since the two ends of the rear face of the inner support seat A7 of the connecting seat 1 are respectively equipped with a temperature control device 13 and a power interface, the temperature control device 13 has a built-in temperature sensor and a wiring socket at its rear end. The power interface is electrically connected to both the temperature control device 13 and the drive seat 12. Then, the engine temperature detection line is connected to the wiring socket at the rear end of the temperature control device 13, and the power supply housing is connected to the car's power supply. Thus, when the car starts, the car grille is activated simultaneously. During normal car operation (suitable temperature), the screen 11 is retracted, and the grille body 2 is fully open to ensure normal air intake and heat dissipation. When the car starts at low temperatures or cruises at high speeds, the temperature control device 13 detects the low temperature or high speed signal and sends a command to start the servo motor. The servo motor, in conjunction with the transmission rod 17, drives the lead screw A18 to rotate. The rotation of the lead screw A18... In the process, the two displacement seats 10 move relative to each other, thereby pulling out the pull-out net 11 from the inside of the support seat A7 and locking it. Then, the net 11 partially or completely closes the grille, reducing the air intake, improving thermal efficiency or reducing wind resistance. When the car is in high temperature condition / accelerating rapidly, the temperature control device 13 detects the high temperature of the car engine and controls the control system to retract the net 11. The servo motor reverses, causing the displacement seat 10 to separate from the support seat B9. During the separation of the displacement seat 10, the torsion spring cooperates with the roller 23 to retract the net 11, so that the grille body 2 is fully open, enhancing the cooling effect. When the car collides at low speed (such as a pedestrian collision), the grille body 2 is impacted by external force. The grille strips 5 on the inside of the grille body 2 press the buffer block 8 to move backward. The buffer block 8 cooperates with the top block 20 to push the stress relief block 21 to be squeezed out laterally. The stress relief block 21 absorbs the impact energy. Then, the stress relief block 21 cooperates with the connecting spring 22 to reset after a delay, so that the grille strip 5 structure returns to its original state, improving the stability of the grille body 2.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for a front bumper grille of an automobile and its implementation method, comprising a connecting seat (1), characterized in that: A grid body (2) is fixedly connected to the front end of the connecting seat (1). A support seat A (7) is fixedly connected to the center of the rear of the grid body (2) on the inner wall of the connecting seat (1). Buffer blocks (8) are provided on both sides of the support seat A (7). The two buffer blocks (8) are distributed at both ends of the grid body (2). Buffer components are fixedly connected to the front ends of the support seat A (7) and the buffer blocks (8). One end of the buffer component extends to the inner side of the grid body (2). The buffer component is used for the connection between the support seat A (7) and the buffer blocks (8) and the grid body (2). Guide seats (15) are provided on both sides of the support seat A (7). One end of the guide seat (15) is fixedly connected to the front end of the grid body (2). Two guide seats (15) are used to connect the support seat A (7) and the buffer block (8) to the outside of the buffer block (8). The rear ends of the two guide seats (15) are movably connected to displacement seats (10). The center of the two displacement seats (10) is located at the rear end of the support seat A (7) and a transmission assembly is provided. The transmission assembly is used to connect the two displacement seats (10) and the support seat A (7). A net (11) is provided on one side of the two displacement seats (10). A roller (23) is provided on one end of the net (11) inside the support seat A (7). One end of the net (11) extends to the inside of the support seat A (7) and is connected to the roller (23). The buffer assembly includes a buffer base (19), a buffer block (8) is movably connected to the front end of the buffer base (19), and a stress relief block (21) is movably connected to both sides of the rear end face of the buffer block (8). When the buffer block (8) is subjected to force and moves, the buffer block (8) will transmit the force to the stress relief block (21), so that the buffer block (8) will squeeze the stress relief block (21) out of the interior of the buffer base (19). The transmission assembly includes a drive seat (12), a servo motor is fixedly connected to the inner side of the drive seat (12), a transmission rod (17) is fixedly connected to the output end of the servo motor, a lead screw A (18) is rotatably connected to one end of the transmission rod (17), and the two ends of the lead screw A (18) extend to the outside of the two displacement seats (10) and are rotatably connected to the support seat B (9). When the servo motor starts, the servo motor drives the transmission rod (17) to rotate. During the rotation of the transmission rod (17), the transmission rod (17) transmits the power of the servo motor to the lead screw A (18), so that the lead screw A (18) drives the two displacement seats (10) to move outside the guide seat (15).

2. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The front end of the connecting seat (1) is provided with an installation groove. When the grille body (2) is connected to the connecting seat (1), the rear end of the grille body (2) is inserted into the inner side of the installation groove. The two ends of the grille body (2) and the two sides of the connecting seat (1) are respectively provided with fixing seat B (4) and fixing seat A (3). The inner sides of fixing seat B (4) and fixing seat A (3) are provided with bolt holes. When the connecting seat (1) is connected to the grille body (2), the connecting seat (1) and the grille body (2) can be connected through fixing seat B (4), while the connecting seat (1) can be connected to the car through fixing seat A (3).

3. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The grid body (2) includes grid strips (5), seven grid strips (5) are provided, and grid blocks (6) are evenly distributed between the seven grid strips (5). The seven grid strips (5) are supported and connected by the grid blocks (6). The front end of the buffer block (8) is provided with a slot. The slot is an I-shaped opening. The shape of the slot is consistent with the shape of the rear end of the grid strip (5). When the grid body (2) is connected to the connecting seat (1), the rear end of the grid strip (5) is inserted into the inner side of the slot.

4. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The buffer block (8) has buffer grooves on both sides of the inner wall of the buffer base (19). The buffer block (8) is inserted into the inner side of the buffer groove. The buffer block (8) is connected to the buffer base (19) through the buffer groove. The buffer block (8) has a top block (20) at the rear end. Both sides of the top block (20) are inclined. The two stress relief blocks (21) are attached to the top block (20) through the inclined surfaces.

5. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The center of the two unloading blocks (21) is located on the inner wall of the buffer base (19) and is fixedly connected to the connecting spring (22). The two unloading blocks (21) are movably connected to the buffer base (19) through the connecting spring (22). When the buffer block (8) is subjected to force buffering, the two unloading blocks (21) reset the buffer block (8) through the connecting spring (22).

6. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The grid block (6) is an inclined block. The surface of the net (11) is provided with partitions that are symmetrical to the grid block (6). When the net (11) is fully unfolded, the partitions and the grid block (6) are arranged alternately. Both ends of the roller (23) are provided with rotating grooves on the inner wall of the support base A (7). Both ends of the roller (23) extend to the inner side of the rotating groove. The inner wall of the rotating groove is provided with a torsion spring. The roller (23) is movably connected to the support base A (7) through the torsion spring. When the net (11) is retracted, the net (11) is stored by rotating the roller (23).

7. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: A bevel gear is provided at one end of the transmission rod (17) and at the center of the lead screw A (18). When the transmission rod (17) rotates, the transmission rod (17) and the bevel gear drive the lead screw A (18) to rotate. The lead screw A (18) is a double-threaded lead screw. The threads at both ends of the lead screw A (18) are symmetrical to each other. When the lead screw A (18) rotates, the lead screw A (18) drives the two displacement seats (10) to perform relative displacement on the outside of the guide seat (15).

8. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: The two ends of the barrier net (11) are evenly distributed with positioning blocks (14) on the inner wall of the connecting seat (1). Both ends of the positioning blocks (14) are inclined surfaces. The bottom end of the positioning blocks (14) is movably connected to the inner wall of the connecting seat (1) with a push-out spring (24). The positioning blocks (14) are movably connected to the connecting seat (1) through the push-out spring (24). The top end of the positioning blocks (14) is provided with a positioning groove on the inner wall of the barrier net (11). When the barrier net (11) is fully unfolded, the top end of the positioning blocks (14) pushes into the inner side of the positioning groove.

9. The heat dissipation structure for a car front bumper grille according to claim 1, characterized in that: Temperature control device (13) and power interface are respectively provided at both ends of the rear end face of support A (7). Temperature control device (13) has a built-in temperature sensor. Wiring plug is provided at the rear end of temperature control device (13). Power interface is electrically connected to temperature control device (13) and drive base (12).

10. A method for implementing a car front bumper grille according to claims 1-9, characterized in that, The steps include the following: Step 1: Connect the connecting seat (1) to the car through the fixed seat A (3), and then connect the grille body (2) to the connecting seat (1) through the fixed seat B (4). Since the two ends of the rear end face of the inner support seat A (7) of the connecting seat (1) are respectively provided with the temperature control device (13) and the power interface, then connect the engine temperature detection line to the wiring socket at the rear end of the temperature control device (13), and then connect the power housing to the car power supply, so that when the car starts, the car grille starts at the same time. Step 2: When the car is running normally (at a suitable temperature), the screen (11) is retracted and the grille body (2) is fully open to ensure normal air intake and heat dissipation; when the car starts at low temperature / cruises at high speed, the temperature control device (13) detects the low temperature or high speed signal of the car and sends a command to start the servo motor. The servo motor, together with the transmission rod (17), drives the lead screw A (18) to rotate. During the rotation of the lead screw A (18), the two displacement seats (10) move relative to each other, thereby pulling out the screen (11) from the inside of the support seat A (7) and locking it. Then, the screen (11) partially or completely closes the grille, reducing the air intake, improving thermal efficiency or reducing wind resistance. Step 3: When the car is in high temperature condition / accelerating rapidly, the temperature control device (13) detects the high temperature of the car engine and controls the system to retract the screen (11). The servo motor reverses, causing the displacement seat (10) to separate from the support seat B (9). During the separation of the displacement seat (10), the torsion spring cooperates with the roller (23) to retract the screen (11), so that the grille body (2) is fully open, enhancing the cooling effect. Step 4: In a low-speed collision of a car (such as a pedestrian collision), the grille body (2) is impacted by an external force. The grille strips (5) on the inner side of the grille body (2) press the buffer block (8) backward. The buffer block (8) and the top block (20) push the stress relief block (21) to be squeezed out laterally. The stress relief block (21) absorbs the impact energy. Then, the stress relief block (21) and the connecting spring (22) reset after a delay, so that the grille strips (5) structure returns to its original state, improving the stability of the grille body (2).

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