Anti-deformation double-layer heat shield

Abstract

This application relates to the field of automotive parts technology, and provides a deformation-resistant double-layer heat insulation cover, including a first cover and a second cover. The first cover has multiple first recesses and multiple first protrusions, and the second cover has multiple second recesses and multiple second protrusions. Each first protrusion is embedded in each second recess, and each second protrusion is embedded in each first recess, so that the second cover fits snugly against the first cover. The edges of the first cover have multiple first bent tabs along their circumference, and the edges of the second cover have multiple second bent tabs along their circumference. The positions of each second bent tab are adapted to the positions of each first bent tab. Each first bent tab and each second bent tab are bent so that each first bent tab presses against each second bent tab, and each second bent tab abuts against the second cover. Based on this, the effectiveness of the double-layer heat insulation cover can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and in particular to a deformation-resistant double-layer heat insulation cover. Background Technology

[0002] When an engine is running, it generates a lot of heat. At the same time, in order to reduce its size, many components are compressed in the area around the engine, which restricts airflow and causes the temperature inside the engine hood to increase.

[0003] In related technologies, a heat shield is installed at the engine to block, reflect, and absorb heat, thereby protecting the safety and stable operation of surrounding engine components and the entire vehicle system. To improve thermal conductivity, a double-layer heat shield is generally used.

[0004] However, in practical applications, the two double-layer heat insulation covers are fixed together by adhesive. Under high or low temperature environments, the double-layer structure is prone to deformation, resulting in poor performance of the double-layer heat insulation covers. Therefore, improvements are needed.

[0005] Practical content To ensure the effectiveness of the double-layer heat insulation cover, this application provides a deformation-resistant double-layer heat insulation cover.

[0006] The deformation-resistant double-layer heat insulation cover provided in this application adopts the following technical solution: A deformation-resistant double-layer heat insulation cover includes a first cover body and a second cover body. The first cover body has multiple first recesses and multiple first protrusions, and the second cover body has multiple second recesses and multiple second protrusions. Each first protrusion is embedded in each second recess, and each second protrusion is embedded in each first recess, so that the second cover body fits against the first cover body. The edge of the first cover body has multiple first bending pieces along its circumference, and the edge of the second cover body has multiple second bending pieces along its circumference. The position of each second bending piece is adapted to the position of each first bending piece. Each first bending piece and each second bending piece are bent so that each first bending piece is pressed against each second bending piece, and each second bending piece abuts against the second cover body.

[0007] By adopting the above technical solution, in practical applications, the first cover and the second cover are fitted and fixed together by multiple first protrusions and multiple second recesses, as well as multiple second protrusions and multiple first recesses. Then, by bending multiple first bending pieces and multiple second bending pieces, each first bending piece is pressed against each second bending piece, and each second bending piece is pressed against the second cover, further fixing the first cover and the second cover together. This ensures the stability of the composite between the first cover and the second cover, and even in high or low temperature environments, it can limit the deformation of the double-layer structure as much as possible, thereby ensuring the performance of the double-layer heat insulation cover.

[0008] Preferably, the double-layer heat insulation cover further includes multiple connecting components, which are spaced apart along the edge of the first cover. Each connecting component includes a connector and a connecting ring. One end of the connector passes through the first cover and the second cover, and the connecting ring is engaged with the other end of the connector and abuts against the second cover.

[0009] By adopting the above technical solution and setting multiple connectors, the first cover and the second cover are pressed between each connector and each connecting ring, further restricting the displacement between the first cover and the second cover, thereby improving the stability of the fixation between the first cover and the second cover.

[0010] Preferably, the connecting assembly further includes two washers, one of which is disposed between the connector and the first cover, and the other of which is disposed between the connecting ring and the second cover.

[0011] By adopting the above technical solution and setting two washers, it is possible to minimize the risk of the connector damaging the first cover and the connecting ring damaging the second cover, and to improve the clamping of the connecting components between the first cover and the second cover, thereby improving the stability of the fixation between the first cover and the second cover.

[0012] Preferably, the connecting assembly further includes a mounting plate, multiple limiting plates, multiple first springs, and second springs; the connector head has a movable groove along its length, and a connecting plate is provided at the end of the movable groove away from the connecting ring; the mounting plate is located at the end of the connector head near the connecting ring, and the mounting plate has multiple mounting grooves spaced apart along its circumference; each limiting plate is slidably connected to each mounting groove, and each first spring is disposed between each limiting plate and the bottom wall of each mounting groove to drive each limiting plate to extend out of each mounting groove; the second spring is disposed between the mounting plate and the connecting plate to drive the mounting plate to abut against the connector head, so that each limiting plate abuts against the connecting ring.

[0013] By adopting the above technical solution, by setting an installation plate, multiple limiting plates, multiple first springs and second springs, multiple limiting plates are inserted into the installation groove, so that the connecting ring can pass through the installation plate and be engaged with the connector. When the multiple limiting plates are released, each limiting plate extends out of the installation groove under the drive of each first spring, and the installation plate abuts against the connector under the drive of the second spring, so that each limiting plate abuts against the connecting ring to prevent the connecting ring from detaching from the connector, thereby improving the stability of the installation of the connecting component and thus improving the stability of the fixation between the first cover and the second cover.

[0014] Preferably, the limiting plate has a chamfer on the end away from the first spring and on the side away from the connecting ring.

[0015] By adopting the above technical solution, and by setting a chamfer, when the connecting ring passes through the mounting plate, the connecting ring abuts against the chamfer of each limiting plate, so as to drive each limiting plate to automatically extend into each mounting groove, so as to realize that the connecting ring is engaged with the connector.

[0016] Preferably, the connecting assembly further includes a plurality of connecting ropes, which are movably threaded through the mounting plate, with one end of each connecting rope located at the end of each limiting plate near each of the first springs, and the other end located at the connecting plate.

[0017] By adopting the above technical solution, and by setting multiple connecting ropes, when the connecting ring is detached from the connector head, the connecting ring abuts against multiple limiting plates, thereby driving the mounting plate away from the connector plate. This causes each connecting rope to pull each limiting plate into the mounting groove, allowing the connecting ring to pass through the mounting plate, so that the connecting ring can be disassembled from the connector head.

[0018] Preferably, the connecting assembly further includes a push rod and a third spring. The push rod is movably inserted through the connecting plate, and the third spring is disposed between the push rod and the connecting plate to drive the push rod away from the mounting plate. The second spring is sleeved on the push rod.

[0019] By adopting the above technical solution, and by setting a top rod and a third spring, the top rod can be pressed to abut against the mounting plate, so that the mounting plate is moved away from the connector head. This allows each limiting plate to automatically extend into its respective mounting groove, facilitating the disassembly of the connecting ring from the connector head. The second spring is sleeved on the top rod to improve the stability of the second spring's operation.

[0020] Preferably, the connecting plate is provided with a limiting post, the top rod is provided with a first limiting groove along its own length direction, and the end of the top rod located in the first limiting groove away from the mounting plate is provided with a second limiting groove along its own circumference, and the limiting post is limited to the first limiting groove or the second limiting groove.

[0021] By adopting the above technical solution, by setting a limiting post, the limiting post is limited to the first limiting groove or the second limiting groove. The limiting post is limited to the first limiting groove to improve the stability of the pressing rod, and the limiting post is limited to the second limiting groove to restrict the movement of the pressing rod, which further facilitates the disassembly of the connecting ring from the connecting head.

[0022] Preferably, the first cover is made of SUS304 stainless steel.

[0023] By adopting the above technical solutions, SUS304 stainless steel has good heat resistance to improve the service life of the first cover, good plasticity to facilitate various processing, and sufficient strength and hardness to meet mechanical requirements.

[0024] Preferably, the second cover is made of SA1D aluminized steel.

[0025] By adopting the above technical solution, SA1D aluminized steel has excellent heat resistance and high-temperature oxidation resistance, as well as good heat reflectivity and light reflectivity.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The first cover and the second cover are fitted and fixed together by multiple first protrusions and multiple second recesses, as well as multiple second protrusions and multiple first recesses. Then, by bending multiple first bending pieces and multiple second bending pieces, each first bending piece is pressed against each second bending piece, and each second bending piece is pressed against the second cover, which further fixes the first cover and the second cover together. This ensures the stability of the composite between the first cover and the second cover. Even in high temperature or low temperature environments, it can limit the deformation of the double-layer structure as much as possible, thereby ensuring the performance of the double-layer heat insulation cover. 2. By setting an mounting plate, multiple limiting plates, multiple first springs and second springs, multiple limiting plates are inserted into the mounting groove, so that the connecting ring can pass through the mounting plate and be engaged with the connector. When the multiple limiting plates are released, each limiting plate extends out of the mounting groove under the drive of each first spring, and the mounting plate abuts against the connector under the drive of the second spring, so that each limiting plate abuts against the connecting ring to prevent the connecting ring from detaching from the connector, thereby improving the stability of the installation of the connecting components and thus improving the stability of the fixation between the first cover and the second cover. 3. By setting multiple connecting ropes, when the connecting ring is detached from the connector head, the connecting ring abuts against multiple limiting plates, which drives the mounting plate away from the connector plate. This causes each connecting rope to pull each limiting plate into the mounting groove, allowing the connecting ring to pass through the mounting plate, so that the connecting ring can be disassembled from the connector head. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the exploded structure of the double-layer heat shield in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the exploded structure of the double-layer heat shield in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the bending state of the first and second bent pieces in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the installation structure of the connecting component in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the connecting component structure in Embodiment 2 of this application; Figure 6 This is a schematic cross-sectional view of the connecting component in Embodiment 2 of this application; Figure 7 This is a schematic diagram of the overall structure of the top rod in Embodiment 2 of this application.

[0028] Reference numerals: 1. First cover; 11. First recess; 12. First protrusion; 13. First bent piece; 2. Second cover; 21. Second recess; 22. Second protrusion; 23. Second bent piece; 3. Connecting assembly; 31. Connector; 311. Movable groove; 312. Connecting plate; 313. Limiting post; 32. Connecting ring; 33. Washer; 34. Mounting plate; 341. Mounting groove; 35. Limiting plate; 351. Chamfer; 36. First spring; 37. Second spring; 38. Connecting rope; 39. Top rod; 391. First limiting groove; 392. Second limiting groove; 30. Third spring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0030] This application discloses a deformation-resistant double-layer heat insulation cover.

[0031] Example 1: Reference Figure 1 and Figure 2 The double-layer heat insulation cover includes a first cover body 1 and a second cover body 2. The first cover body 1 has a plurality of first recesses 11 and a plurality of first protrusions 12. Correspondingly, the second cover body 2 has a plurality of second recesses 21 and a plurality of second protrusions 22. The plurality of first protrusions 12 match the plurality of second recesses 21, so that each first protrusion 12 is embedded in each second recess 21. The plurality of second protrusions 22 match the plurality of first recesses 11, so that each second protrusion 22 is embedded in each first recess 11. This allows the second cover body 2 to be fitted and embedded in the first cover body 1, thereby achieving a fitted and fixed connection between the first cover body 1 and the second cover body 2.

[0032] Reference Figure 1 and Figure 3Meanwhile, the edge of the first cover 1 protrudes circumferentially to form multiple first bent pieces 13, and the edge of the second cover 2 protrudes circumferentially to form multiple second bent pieces 23. The position of each second bent piece 23 is adapted to the position of each first bent piece 13, and each first bent piece 13 and each second bent piece 23 are bent so that each first bent piece 13 is pressed against each second bent piece 23, and each second bent piece 23 is pressed against the second cover 2, further realizing the fixation between the first cover 1 and the second cover 2, so as to ensure the stability of the composite between the first cover 1 and the second cover 2. Even in high temperature or low temperature environments, the deformation of the double-layer structure can be limited as much as possible, thereby ensuring the performance of the double-layer heat insulation cover.

[0033] Reference Figure 1 and Figure 4 In some embodiments, the double-layer heat insulation cover further includes multiple connecting components 3, which are spaced apart along the edge of the first cover 1 or the second cover 2. Specifically, the connecting component 3 includes a connector 31 and a connecting ring 32. One end of the connector 31 passes through the first cover 1 and the second cover 2 in sequence, and the other end abuts against the first cover 1. The connecting ring 32 is engaged with the other end of the connector 31 and abuts against the second cover 2, so that the first cover 1 and the second cover 2 are pressed between each connector 31 and each connecting ring 32, further restricting the displacement between the first cover 1 and the second cover 2, thereby improving the stability of the fixation between the first cover 1 and the second cover 2, minimizing the deformation of the double-layer heat insulation cover in all directions, and further limiting the deformation of the double-layer structure.

[0034] In some embodiments, the connecting assembly 3 further includes two washers 33, one of which is located between the connector 31 and the first cover 1 to prevent the connector 31 from crushing the first cover 1 as much as possible, and the other washer 33 is located between the connecting ring 32 and the second cover 2 to prevent the connecting ring 32 from crushing the second cover 2 as much as possible, and can improve the compression of the first cover 1 and the second cover 2 by the connecting assembly 3, so as to improve the stability of the fixation between the first cover 1 and the second cover 2.

[0035] In some embodiments, the first cover 1 is made of SUS304 stainless steel. SUS304 stainless steel has good heat resistance to improve the service life of the first cover 1, good ductility for easy processing, and sufficient strength and hardness to meet mechanical requirements. Meanwhile, the second cover 2 is made of SA1D aluminized steel. SA1D aluminized steel has excellent heat resistance and high-temperature oxidation resistance, as well as good heat and light reflectivity to improve the effectiveness of the double-layer heat insulation cover.

[0036] The implementation principle of this embodiment is as follows: In practical applications, the first cover 1 and the second cover 2 are fitted and fixed by multiple first protrusions 12 and multiple second recesses 21, and multiple second protrusions 22 and multiple first recesses 11. Then, by bending multiple first bending pieces 13 and multiple second bending pieces 23, each first bending piece 13 is pressed against each second bending piece 23, and each second bending piece 23 is pressed against the second cover 2, further fixing the first cover 1 and the second cover 2 to ensure the stability of the composite between the first cover 1 and the second cover 2. Even in high temperature or low temperature environments, the deformation of the double-layer structure can be limited as much as possible, thereby ensuring the performance of the double-layer heat insulation cover.

[0037] Example 2: Reference Figure 5 and Figure 6 This embodiment is the same as the other structures in embodiment 1. The difference is that the connecting component 3 also includes a mounting plate 34, multiple limiting plates 35, multiple first springs 36 and second springs 37. The connector 31 has a through movable groove 311 along its own length direction, and the connector 31 is fixedly connected to the connecting plate 312 at the end of the connector 31 located away from the connecting ring 32 in the movable groove 311.

[0038] The mounting plate 34 is located at one end of the connector 31 near the connecting ring 32. The mounting plate 34 has multiple mounting slots 341 spaced apart along its circumference. Taking four mounting slots 341 as an example, the corresponding number of limiting plates 35 and first springs 36 is four. Each limiting plate 35 is slidably connected to each mounting slot 341. One end of each first spring 36 is fixedly connected to each limiting plate 35, and the other end is fixedly connected to the bottom wall of each mounting slot 341, thereby driving each limiting plate 35 to extend out of its respective mounting slot 341.

[0039] One end of the second spring 37 is fixedly connected to the mounting plate 34, and the other end is fixedly connected to the connecting plate 312, so as to drive the mounting plate 34 to approach the connecting plate 312, so that the mounting plate 34 abuts against the connector 31, so that each limiting plate 35 abuts against the connecting ring 32.

[0040] In practical applications, four limiting plates 35 are inserted into the mounting groove 341, allowing the connecting ring 32 to pass through the mounting plate 34 and engage with the connector 31. When the four limiting plates 35 are released, each limiting plate 35 extends out of the mounting groove 341 under the drive of each first spring 36, and the mounting plate 34 abuts against the connector 31 under the drive of the second spring 37, so that the four limiting plates 35 are pressed against the connecting ring 32 to prevent the connecting ring 32 from disengaging from the connector 31, thereby improving the stability of the installation of the connecting assembly 3 and thus improving the stability of the fixation between the first cover 1 and the second cover 2.

[0041] In some embodiments, the end of the limiting plate 35 away from the first spring 36 and the side away from the connecting ring 32 is provided with a chamfer 351. When the connecting ring 32 passes through the mounting plate 34, the connecting ring 32 abuts against the chamfer 351 of each limiting plate 35 to drive each limiting plate 35 to automatically extend into each mounting groove 341, thereby facilitating the connection of the connecting ring 32 to the connector 31.

[0042] In some embodiments, the connecting assembly 3 further includes four connecting ropes 38, which are movably threaded through the mounting plate 34. One end of each connecting rope 38 is fixedly connected to the end of the limiting plate 35 near the first spring 36, and the other end is fixedly connected to the connecting plate 312. Each connecting rope 38 is taut. When the connecting ring 32 is disengaged from the connecting head 31, the connecting ring 32 abuts against the multiple limiting plates 35, driving the mounting plate 34 away from the connecting plate 312. This causes each connecting rope 38 to pull each limiting plate 35 into the mounting groove 341, allowing the connecting ring 32 to pass through the mounting plate 34, thus facilitating the removal of the connecting ring 32 from the connecting head 31.

[0043] In some embodiments, the connecting assembly 3 further includes a push rod 39 and a third spring 30. The push rod 39 is T-shaped and movably passes through the connecting plate 312. One end of the third spring 30 is fixedly connected to the side of the connecting plate 312 away from the mounting plate 34, and the other end is fixedly connected to the push rod 39 to drive the push rod 39 away from the mounting plate 34, thus creating a certain distance between the push rod 39 and the mounting plate 34. In this way, when it is difficult to detach the connecting ring 32 from the connecting head 31, pressing the push rod 39 causes it to abut against the mounting plate 34, moving the mounting plate 34 away from the connecting head 31. This allows each limiting plate 35 to automatically extend into its respective mounting groove 341, facilitating the removal of the connecting ring 32 from the connecting head 31. Simultaneously, a second spring 37 can be fitted onto the push rod 39 to improve the stability of the second spring 37's operation and minimize bending damage, thereby extending the service life of the second spring 37.

[0044] Reference Figure 6 and Figure 7 In some embodiments, the connecting plate 312 protrudes to form a limiting post 313, and the push rod 39 has a first limiting groove 391 along its length. The end of the push rod 39 located away from the mounting plate 34 in the first limiting groove 391 has a second limiting groove 392 along its circumference. The limiting post 313 is confined within either the first limiting groove 391 or the second limiting groove 392. When the limiting post 313 is confined within the first limiting groove 391, the movement of the push rod 39 is limited, thereby improving the stability of pressing the push rod 39. When the limiting post 313 is confined within the second limiting groove 392, the movement of the push rod 39 is restricted. This maintains the position of the push rod 39 protruding from the mounting plate 34, further facilitating the disassembly of the connecting ring 32 from the connecting head 31.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A distortion-proof double-layer heat shield, characterized by, Includes a first cover (1) and a second cover (2); the first cover (1) has a plurality of first recesses (11) and a plurality of first protrusions (12), and the second cover (2) has a plurality of second recesses (21) and a plurality of second protrusions (22), each of the first protrusions (12) being embedded in each of the second recesses (21), and each of the second protrusions (22) being embedded in each of the first recesses (11), so that the second cover (2) fits against the first cover (1); the edges of the first cover (1) The edge of the second cover (2) is provided with a plurality of first bending pieces (13) along its own circumference, and the edge of the second cover (2) is provided with a plurality of second bending pieces (23) along its own circumference. The position of each second bending piece (23) is adapted to the position of each first bending piece (13). Each first bending piece (13) and each second bending piece (23) are bent together so that each first bending piece (13) is pressed against each second bending piece (23), and each second bending piece (23) is pressed against the second cover (2). The double-layer heat insulation cover also includes a plurality of connecting components (3), which are spaced apart along the edge of the first cover (1). Each connecting component (3) includes a connector (31) and a connecting ring (32). One end of the connector (31) passes through the first cover (1) and the second cover (2), and the connecting ring (32) is engaged with the other end of the connector (31) and abuts against the second cover (2). The connecting assembly (3) further includes a mounting plate (34), multiple limiting plates (35), multiple first springs (36), and a second spring (37); the connector (31) has a movable groove (311) along its own length direction, and a connecting plate (312) is provided at the end of the movable groove (311) away from the connecting ring (32); the mounting plate (34) is located at the end of the connector (31) near the connecting ring (32), and the mounting plate (34) has multiple mounting grooves (341) spaced apart along its own circumference, each of which... The limiting plate (35) is slidably connected in each of the mounting grooves (341), and each of the first springs (36) is disposed between each of the limiting plates (35) and the bottom wall of each of the mounting grooves (341) to drive each of the limiting plates (35) to extend out of each of the mounting grooves (341); the second spring (37) is disposed between the mounting plate (34) and the connecting plate (312) to drive the mounting plate (34) to abut against the connector (31) so that each of the limiting plates (35) abuts against the connecting ring (32).

2. The anti-deformation double-layer heat shield according to claim 1, characterized in that, The connecting assembly (3) further includes two washers (33), one of which is located between the connector (31) and the first cover (1), and the other is located between the connecting ring (32) and the second cover (2).

3. The anti-deformation double-layer heat shield according to claim 1, characterized in that, The limiting plate (35) has a chamfer (351) on one end away from the first spring (36) and on the side away from the connecting ring (32).

4. The anti-deformation double-layer heat shield according to claim 1, characterized in that, The connecting assembly (3) further includes a plurality of connecting ropes (38), which are movably threaded through the mounting plate (34), with one end of each connecting rope (38) located at one end of each limiting plate (35) near each of the first springs (36), and the other end located at the connecting plate (312).

5. The anti-deformation double-layer heat shield according to claim 4, characterized in that, The connecting assembly (3) further includes a push rod (39) and a third spring (30). The push rod (39) is movably inserted through the connecting plate (312). The third spring (30) is disposed between the push rod (39) and the connecting plate (312) to drive the push rod (39) away from the mounting plate (34). The second spring (37) is sleeved on the push rod (39).

6. The anti-deformation double-layer heat shield according to claim 5, characterized in that, The connecting plate (312) is provided with a limiting post (313), the top rod (39) is provided with a first limiting groove (391) along its own length direction, and the top rod (39) is provided with a second limiting groove (392) along its own circumference at the end of the first limiting groove (391) away from the mounting plate (34), and the limiting post (313) is limited to the first limiting groove (391) or the second limiting groove (392).

7. The anti-deformation double-layer heat shield according to claim 1, characterized in that, The first cover (1) is made of SUS304 stainless steel.

8. The anti-deformation double-layer heat shield according to claim 1, characterized in that, The second cover (2) is made of SA1D aluminum-plated steel.

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