Exhaust system heat shield structure and vehicle

Abstract

The application provides an exhaust system heat insulation structure and a vehicle, and belongs to the technical field of automobile exhaust systems. The exhaust system heat insulation structure is characterized in that the first fastener is aligned with the vehicle body stud through sliding along the long-shaped adjusting hole, the first fastener is accurately aligned with the vehicle body stud, reliable connection between the first connecting part and the vehicle body stud is achieved, the difficulty of alignment and installation is significantly reduced, and the single assembly time is directly shortened. Through the corresponding connection between the first fastener and the long-shaped adjusting hole, an integrated structure of the first fastener and the heat insulation plate is formed, the additional step of separately taking the first fastener is saved, the assembly process is simplified, and the operation difficulty is reduced. Through the bidirectional clamping structure of the first clasp ring and the second clasp ring, pre-assembly is more convenient, and the anti-dropping effect is more reliable. Through the formation of the annular gap embedded with the heat insulation plate, the sliding and rotation of the first connecting part are achieved, the operation difficulty of accurate alignment and installation with the vehicle body stud is effectively reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of automotive exhaust system technology, and more specifically, relates to an exhaust system heat insulation structure and a vehicle. Background Technology

[0002] In automotive exhaust systems, heat shields are key components that ensure stable system operation. Their core function is to effectively isolate the high-temperature heat source generated during exhaust system operation, preventing surrounding body components, pipelines, electrical components, etc. from deteriorating in performance, structural damage, or functional failure due to prolonged exposure to high-temperature environments, thereby ensuring the safe and reliable operation of the vehicle.

[0003] In existing technologies, fasteners such as bolts or clips are typically used to connect and fix the heat shield to the vehicle frame or exhaust system components. During installation, it is crucial to ensure precise alignment between the mounting positions (e.g., mounting holes) on the heat shield and the mounting positions (e.g., body studs) on the vehicle body. However, due to machining errors and other factors, assembly errors can easily occur between the mounting positions. Operators must repeatedly adjust the relative positions of the heat shield and the vehicle body to achieve precise alignment, directly extending the assembly time per cycle. Furthermore, after aligning the heat shield and the mounting positions on the vehicle body, the operator must hold the heat shield in one hand to maintain its position while simultaneously using the other hand to retrieve fasteners for subsequent fixing operations. This method of heat shield installation presents problems of cumbersome assembly procedures and high operational difficulty, severely impacting the assembly efficiency of the exhaust system. Utility Model Content

[0004] The purpose of this application is to provide a heat insulation structure for an exhaust system and a vehicle, aiming to solve the technical problems of cumbersome assembly procedures, high operational difficulty, and serious impact on the assembly efficiency of the exhaust system in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: Firstly, a heat insulation structure for an exhaust system is provided, comprising: The heat insulation plate has several elongated adjustment holes, each corresponding to a stud on the vehicle body; and A plurality of first fasteners are connected one-to-one with a plurality of elongated adjustment holes. Each first fastener has a first connecting portion connected to the vehicle body stud. The first fastener can slide along the length direction of the elongated adjustment hole so that the first connecting portion is axially aligned with the vehicle body stud.

[0006] Existing methods for installing and fixing heat shields typically involve pre-welding studs to the vehicle body, drilling corresponding mounting holes in the heat shield, aligning the mounting holes on the heat shield with the vehicle body studs, and then connecting it to the end of the studs using nuts or clips. This process requires operators to repeatedly adjust the spatial orientation of the heat shield to ensure coaxial alignment between the mounting holes and the studs. Once aligned, the operator must support the heat shield with one hand while using the other to attach the fasteners to the studs, thus completing the heat shield assembly. This cumbersome and difficult assembly process severely restricts the production and assembly efficiency of the exhaust system and even the entire vehicle.

[0007] The beneficial effects of the exhaust system heat insulation structure provided in this application are as follows: Compared with the prior art, the exhaust system heat insulation structure of this application provides a sliding adjustment space for the first fastener through the elongated adjustment hole. When installing the heat insulation plate, there is no need to move the heat insulation plate as a whole. The first fastener can be precisely aligned with the body stud simply by sliding along the elongated adjustment hole, realizing a reliable connection between the first connecting part and the body stud. This significantly reduces the difficulty of alignment installation and directly shortens the assembly time per assembly. In addition, the corresponding connection between the first fastener and the elongated adjustment hole forms an integrated structure of the first fastener and the heat insulation plate, eliminating the extra step of separately removing the first fastener, simplifying the assembly process, reducing the difficulty of operation, and effectively improving the assembly efficiency of the exhaust system.

[0008] In conjunction with the first aspect, in one possible implementation, the first fastener includes: A first retaining ring is located on the side of the heat insulation plate opposite to the exhaust system; and The second retaining ring is connected to the first retaining ring and is located on the other side of the heat insulation plate, and the first connecting part is located on the second retaining ring; An annular gap is formed between the first retaining ring and the second retaining ring, and the heat insulation plate is inserted into the annular gap so that the first fastener can slide or rotate within the elongated adjustment hole.

[0009] The bidirectional clamping structure of the first and second retaining rings makes pre-assembly more convenient and the anti-detachment effect more reliable. At the same time, by forming an annular gap with the heat insulation plate, the sliding and rotation of the first connecting part are realized, which effectively reduces the difficulty of precise alignment and installation with the body studs and improves assembly efficiency.

[0010] In some embodiments, the first connecting portion consists of a plurality of claws connected to the inner peripheral wall of the second retaining ring. The plurality of claws are arranged at intervals along the circumference of the second retaining ring. Each claw has a snap-fit ​​end that is raised away from the first retaining ring and is used to snap-fit ​​the outer peripheral wall of the vehicle body stud.

[0011] In the above technical solution, the entire installation process requires no additional tools or handling of parts, significantly shortening the installation cycle of the heat insulation panel and effectively improving the assembly efficiency of the exhaust system. Furthermore, the first connection formed by several clamps provides better anti-loosening performance under vibration conditions, ensuring connection reliability.

[0012] In some embodiments, the first retaining ring has an arc-shaped protruding retaining bead, and the second retaining ring has an arc-shaped recessed retaining hole. The retaining bead and the retaining hole engage to connect the first retaining ring and the second retaining ring.

[0013] By pressing the first and second retaining rings, the retaining bead and the retaining hole are engaged, thus connecting the first and second retaining rings and achieving the pre-connection of the first fastener and the heat insulation plate. The assembly process is simple and easy to operate, improving the pre-assembly efficiency.

[0014] In some embodiments, the second retaining ring is connected to two disassembly rings, which extend away from the first retaining ring. The two disassembly rings are rotational force application points, so as to disassemble and separate the first fastener from the vehicle body stud by rotating the first fastener.

[0015] The two disassembly rings simplify the disassembly process of the heat insulation plate and reduce processing costs. Moreover, the disassembly process will not cause additional damage to the first fastener and the heat insulation plate. The disassembled parts can be reused, reducing maintenance and replacement costs.

[0016] In conjunction with the first aspect, in one possible implementation, the heat insulation plate is further provided with positioning holes, which are spaced apart from the elongated adjustment holes, and a second fastener is connected to the positioning holes; The second fastener has a second connecting portion connected to the vehicle body reference stud, and the second fastener is rotatable within the positioning hole.

[0017] The positioning holes and the second fastener provide a positioning reference for the installation of the heat insulation board, simplifying the installation process and reducing the difficulty of operation.

[0018] In conjunction with the first aspect, in one possible implementation, the side of the heat insulation plate opposite to the exhaust system has a heat insulation cavity, and the heat insulation plate is provided with an air vent communicating with the heat insulation cavity; A wind deflector is hinged to the heat insulation plate, and the wind deflector can swing to close the air vent or open the air vent.

[0019] The structure of the wind deflector and air vent is simple, practical, and easy to implement. It can not only effectively isolate the heat of the exhaust system, but also introduce outside air flow when the vehicle is running, quickly remove the accumulated heat, and significantly extend the service life of the protected components.

[0020] In some embodiments, the heat insulation plate includes a bent portion and an isolation portion connected sequentially from front to back. The heat insulation cavity is located on the side of the isolation portion away from the exhaust system. The plate surface of the bent portion is set at an angle to the front-back direction. The air vent is located on the bent portion and faces forward. The elongated adjustment hole is located on the isolation portion.

[0021] By placing the air vent on the bend, when the baffle is open, outside air can directly enter the insulation cavity from front to back. The high-speed airflow from the outside accelerates the convection exchange between the insulation cavity and the outside air, significantly improving heat dissipation efficiency without affecting the insulation effect of the isolation section on the exhaust system. The elongated adjustment hole is located on the relatively flat isolation section, facilitating operator observation and sliding of the first fastener for more precise alignment.

[0022] In some embodiments, the wind deflector and the bent portion are hinged together by a hinge pivot. The bent portion is provided with a first hinge ring, the wind deflector is provided with a second hinge ring, and the hinge shaft is rotatably engaged with the first hinge ring and the second hinge ring respectively.

[0023] The above technical solutions are simple to process, low in cost, and require no additional maintenance; they are also resistant to high temperatures and vibration, and can be adapted to the harsh working conditions of exhaust systems.

[0024] Secondly, embodiments of this application also provide a vehicle including the aforementioned exhaust system heat insulation structure.

[0025] The vehicle provided in this application embodiment, having included the aforementioned exhaust system heat insulation structure, possesses all the beneficial effects of the aforementioned exhaust system heat insulation structure. It can significantly reduce the difficulty of aligning and installing the first connecting part and the body stud, directly shortening the assembly time per assembly. Furthermore, it forms an integrated structure of the first fastener and the heat insulation plate, eliminating the extra step of separately taking the first fastener, simplifying the assembly process, reducing the difficulty of operation, and effectively improving the assembly efficiency of the exhaust system. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a heat insulation structure for an exhaust system provided in an embodiment of this application; Figure 2 Examples of this application Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 Examples of this application Figure 1 Enlarged structural diagram of section B; Figure 4 Examples of this application Figure 2 A schematic diagram of the structure viewed from below; Figure 5 Examples of this application Figure 2 A schematic diagram of the cross-sectional structure; Figure 6 This is a schematic diagram of the structure of the second retaining ring provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the first retaining ring provided in an embodiment of this application; Figure 8 This is a schematic diagram of another arrangement of the positioning hole, elongated adjustment hole, first fastener, and second fastener on the heat insulation plate provided in the embodiments of this application.

[0028] In the picture: 1. Insulation plate; 11. Long adjustment hole; 12. Positioning hole; 13. Air outlet; 14. Fitting part; 15. Bending part; 151. First hinge ring; 16. Isolation part; 2. First fastener; 21. First connecting part; 22. First retaining ring; 221. Retaining bead; 23. Second retaining ring; 231. Claw; 2311. Snap-fit ​​end; 232. Snap-fit ​​hole; 233. Disassembly ring; 24. Annular gap; 3. Wind baffle; 31. Second hinge ring; 4. Hinge shaft; 5. Second fastener; 51. Second connecting part. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a few" means two or more, unless otherwise explicitly specified.

[0032] It is understood that the directions or positional relationships indicated by "front", "rear", "up", and "down" in this embodiment are based on the vehicle's own orientation. The front of the vehicle represents "front", the rear of the vehicle represents "rear", the top of the vehicle represents "up", and the bottom of the vehicle represents "down".

[0033] Currently, heat shields for vehicle exhaust systems are typically made of aluminum sheets with a thickness of 0.5mm-1mm. For installation, studs are usually pre-welded to the vehicle body, and corresponding mounting holes are drilled in the heat shield. The heat shield is fitted with the mounting holes on the heat shield and then connected to the end of the studs using nuts or clips, thus securing the heat shield to the vehicle body and isolating the exhaust system (such as the exhaust pipe) from the protected components (such as surrounding pipes or wiring harnesses).

[0034] The above-mentioned assembly method for the heat insulation panel requires the operator to repeatedly adjust the spatial posture of the entire heat insulation panel to ensure that the mounting holes on the heat insulation panel are coaxially aligned with the body studs. After alignment, the operator needs to support the heat insulation panel with one hand and keep it stable in the aligned installation position, while the other hand needs to pick up the fasteners separately and keep the hand stable to prevent the fasteners from falling before connecting the fasteners to the body studs, thus completing the assembly of the entire heat insulation panel.

[0035] The inventors discovered that, in this assembly process, on the one hand, operators need to simultaneously focus on positioning the heat shield, holding the fasteners, and ensuring their precise alignment. This requires high coordination of both hands, and misalignment can easily occur due to hand tremors or distraction, necessitating repeated adjustments and extending the assembly time per cycle. On the other hand, the separate design of the fasteners and heat shield necessitates additional steps for retrieving and transferring fasteners during the operation, and there is a risk of fasteners falling out or being lost, further increasing the complexity and uncertainty of the assembly process. These problems result in the existing heat shield assembly process being cumbersome and difficult to operate, severely restricting the production and assembly efficiency of the exhaust system and even the entire vehicle.

[0036] To resolve the above issues, please refer to the following: Figures 1 to 8 The present application describes a heat insulation structure for an exhaust system and a vehicle thereof. The heat insulation structure includes a heat insulation plate 1 and a plurality of first fasteners 2. The heat insulation plate 1 has a plurality of elongated adjustment holes 11, each corresponding to a vehicle body stud. The plurality of first fasteners 2 are connected to the plurality of elongated adjustment holes 11 in a corresponding manner. Each first fastener 2 has a first connecting portion 21 connected to the vehicle body stud. The first fastener 2 can slide along the length of the elongated adjustment hole 11 to axially align the first connecting portion 21 with the vehicle body stud.

[0037] The exhaust system heat insulation structure provided in this application, compared with the prior art, provides a sliding adjustment space for the first fastener 2 through the elongated adjustment hole 11. When installing the heat insulation plate 1, there is no need to move the heat insulation plate 1 as a whole. The first fastener 2 can be precisely aligned with the body stud simply by sliding along the elongated adjustment hole 11, realizing a reliable connection between the first connecting part 21 and the body stud. This significantly reduces the difficulty of alignment installation and directly shortens the assembly time per assembly. In addition, the corresponding connection between the first fastener 2 and the elongated adjustment hole 11 forms an integrated structure of the first fastener 2 and the heat insulation plate 1, eliminating the extra step of separately removing the first fastener 2, simplifying the assembly process, reducing the difficulty of operation, and effectively improving the assembly efficiency of the exhaust system.

[0038] For ease of description, in this embodiment, the heat insulation plate 1 is disposed between the protected component at the bottom of the chassis and the exhaust pipe. It can be understood that, in the attached... Figure 1 In the process of installing the heat insulation plate 1, it is necessary to move the heat insulation plate 1 upwards to connect with the chassis, that is, the protected component at the bottom of the chassis is located above the heat insulation plate 1, and the exhaust pipe in the exhaust system is located below the heat insulation plate 1. Optionally, in some other embodiments, the heat insulation plate 1 can also be placed vertically or at an angle. For example, when the protected component and the exhaust pipe are arranged at horizontal intervals, the heat insulation plate 1 needs to be vertically installed between the protected component and the exhaust pipe.

[0039] Specifically, the elongated adjustment hole 11 can adopt an oblong hole structure (i.e., a combination shape with semicircles at both ends and a rectangle in the middle), so that the first fastener 2 can slide along the length direction of the oblong hole; optionally, two elongated adjustment holes 11 can be provided at the same position on the heat insulation plate 1 corresponding to the same body stud. The two elongated adjustment holes 11 at this position can be perpendicularly connected to each other to form shapes such as "+" or "⊥", so that the first fastener 2 can slide along two mutually perpendicular directions, increasing the position adjustment range of the first fastener 2.

[0040] The specific location and length direction of the elongated adjustment holes 11 need to be determined according to the arrangement of the vehicle body studs. That is to say, the length direction of several elongated adjustment holes 11 can be the same (e.g., Figure 1 The settings shown are all along the front-to-back direction, but they can also be different (e.g., Figure 8 The angles shown can be perpendicular to each other or form other angles.

[0041] During processing, the elongated adjustment hole 11 can be formed simultaneously with the heat insulation plate 1 through a stamping process, without the need for secondary processing. Furthermore, the elongated adjustment hole 11 can be set on the reinforcing protrusion of the heat insulation plate 1 to increase the strength of the connection position.

[0042] The first connecting portion 21 of the first fastener 2 can adopt an internal thread structure, such as a nut; or it can adopt a snap-fit ​​structure, such as a claw 231 or a spring-loaded pin. The connection between the first fastener 2 and the elongated adjusting hole 11 can adopt an "I"-shaped connecting member. The middle part of the connecting member matches the width of the elongated adjusting hole 11, allowing it to slide smoothly along the elongated adjusting hole 11. The two ends of the connecting member can be circular baffle structures, and the diameter of the circular baffles must be larger than the width of the elongated adjusting hole 11 to prevent the first fastener 2 from falling off the elongated adjusting hole 11. The "I"-shaped connecting member is a hollow structure so that the vehicle body stud can pass through and connect to the first connecting portion 21. In addition, when the first connecting portion 21 adopts an internal thread structure, a rotating connection needs to be provided between the first connecting portion 21 and the connecting member or between the connecting member and the heat insulation plate 1, so that after alignment with the vehicle body stud, the threaded connection with the vehicle body stud can be achieved by rotating the first connecting portion 21.

[0043] Overall, the first fastener 2 adopts an integrated design that combines connection, sliding, and anti-loosening functions, thereby achieving the integration of the first fastener 2 with the heat insulation plate 1 and laying a reliable structural foundation for improving the assembly efficiency of the heat insulation plate 1.

[0044] This embodiment provides a heat insulation structure for an exhaust system. During installation, the operator holds the heat insulation plate 1, which integrates the first fastener 2, and applies it upwards to the installation area on the vehicle chassis, initially aligning each elongated adjustment hole 11 with the vehicle body stud, without requiring precise alignment. Then, for each elongated adjustment hole 11, the first fastener 2 is gently pushed to slide along the length of the hole until the first connecting part 21 of the first fastener 2 is completely coaxially aligned with the vehicle body stud. Afterwards, the first fastener 2 can be connected to the vehicle body stud by rotating the first connecting part 21 (when an internal thread structure is used), or by directly pushing the heat insulation plate 1 upwards to allow the vehicle body stud to pass through the first connecting part 21 (when a snap-fit ​​structure is used) and complete the snap-fit ​​connection. This installation process reduces the operator's labor intensity and operational difficulty, achieving highly efficient assembly of the heat insulation plate 1.

[0045] In some embodiments, the first fastener 2 described above may be as follows: Figure 2 and Figure 4 The structure shown. Please refer to [link / reference]. Figure 2 and Figure 4 The first fastener 2 includes a first retaining ring 22 and a second retaining ring 23. The first retaining ring 22 is located on the side of the heat insulation plate 1 away from the exhaust system. The second retaining ring 23 is connected to the first retaining ring 22 and is located on the other side of the heat insulation plate 1. The first connecting part 21 is located on the second retaining ring 23. An annular gap 24 is formed between the first retaining ring 22 and the second retaining ring 23. The heat insulation plate 1 is inserted into the annular gap 24 so that the first fastener 2 can slide or rotate within the elongated adjusting hole 11.

[0046] In this embodiment, the first retaining ring 22 and the second retaining ring 23 can be fixedly connected as a whole by snap-fit ​​or spot welding, and are located on both sides of the heat insulation plate 1 to form a closed annular clamping structure, realizing the pre-assembly of the first fastener 2 and the heat insulation plate 1. The width of the annular gap 24 is slightly larger than the thickness of the heat insulation plate 1, such as 0.2mm-0.4mm larger than the thickness of the heat insulation plate 1, which ensures the stable embedding of the first fastener 2 and the heat insulation plate 1, and prevents excessive friction between them, ensuring that the first fastener 2 can slide smoothly along the elongated adjustment hole 11, while also meeting the requirement of rotating around its own axis. When the first connecting part 21 adopts an internal thread structure, it needs to be connected to the body stud by rotating the first connecting part 21 itself. When installing the heat insulation plate 1, the body stud is inserted from the side away from the exhaust system, that is, through the first retaining ring 22, and the first connecting part 21 is placed on the second retaining ring 23, which facilitates the visual connection operation after the body stud passes through.

[0047] The bidirectional clamping structure of the first retaining ring 22 and the second retaining ring 23 makes pre-assembly more convenient and the anti-detachment effect more reliable. At the same time, by forming an annular gap 24 embedded with the heat insulation plate 1, the sliding and rotation of the first connecting part 21 are realized, which effectively reduces the difficulty of precise alignment and installation with the body studs and improves the assembly efficiency.

[0048] In some embodiments, the first connecting portion 21 described above may be as follows: Figure 4 , Figure 5 and Figure 6 The structure shown. Please refer to [link / reference]. Figure 4 , Figure 5 and Figure 6 The first connecting part 21 consists of several claws 231 connected to the inner peripheral wall of the second retaining ring 23. The several claws 231 are arranged at intervals along the circumference of the second retaining ring 23. The claws 231 have a snap-fit ​​end 2311 that is raised to the side away from the first retaining ring 22. The snap-fit ​​end 2311 is used to snap-fit ​​the outer peripheral wall of the vehicle body stud.

[0049] In this embodiment, 6-8 claws 231 are evenly distributed circumferentially on the inner peripheral wall of the second retaining ring 23. The root of the claws 231 is integrally formed with the second retaining ring 23, and the free end is raised to the side away from the first retaining ring 22 to form a snap-fit ​​end 2311, which facilitates the quick insertion of the vehicle body stud into the first connecting part 21 from the side of the first retaining ring 22. The snap-fit ​​ends 2311 of the 6-8 claws 231 form a circular structure that can be fitted onto the outer periphery of the vehicle body stud, and the diameter of the circular structure is slightly smaller than the outer diameter of the vehicle body stud, ensuring that after the vehicle body stud is inserted into the circular structure, each snap-fit ​​end 2311 can reliably embed into the gap of the external thread of the vehicle body stud to form a mechanical engagement connection.

[0050] During installation, by sliding the first fastener 2 along the elongated adjustment hole 11, the first connecting part 21 is axially aligned with the body stud. Then, the operator only needs to push the heat insulation plate 1 to one side of the body stud so that the body stud passes through the first retaining ring 22 and the second retaining ring 23 in sequence. During this process, each retaining claw 231 elastically opens. After the body stud is inserted into place, it automatically springs back until the retaining end 2311 is embedded in the thread profile gap of the body stud, thus completing the connection between the first fastener 2 and the body stud.

[0051] The entire installation process described above requires no additional tools or parts, significantly shortening the installation cycle of the heat insulation panel 1 and effectively improving the assembly efficiency of the exhaust system. Furthermore, the first connection portion 21 formed by several claws 231 provides better anti-loosening performance under vibration conditions, ensuring connection reliability.

[0052] In some embodiments, the first retaining ring 22 and the second retaining ring 23 may be connected in the manner described above. Figure 4 , Figure 5 , Figure 6and Figure 7 The structure shown. Please refer to [link / reference]. Figure 4 , Figure 5 , Figure 6 and Figure 7 The first retaining ring 22 has an arc-shaped protruding retaining bead 221, and the second retaining ring 23 has an arc-shaped recessed retaining hole 232. The retaining bead 221 and the retaining hole 232 engage to connect the first retaining ring 22 and the second retaining ring 23.

[0053] In this embodiment, the locking bead 221 is an arc-shaped protrusion integrally stamped on the side of the first retaining ring 22 facing the second retaining ring 23, and the locking hole 232 is an arc-shaped recess integrally stamped at the corresponding position of the second retaining ring 23. Furthermore, a notch can be provided at the root of the locking bead 221, and a constriction can be provided at the opening of the locking hole 232. When the locking bead 221 is inserted into the locking hole 232, the interlocking fit of the constriction and the notch further ensures the stability of the locking connection. Specifically, 3-6 sets of locking beads 221 and locking holes 232 are evenly distributed circumferentially to ensure connection strength while ensuring uniform force distribution.

[0054] By pressing the first retaining ring 22 and the second retaining ring 23, the retaining bead 221 and the retaining hole 232 are engaged, thus achieving the connection between the first retaining ring 22 and the second retaining ring 23. This also achieves the pre-connection between the first fastener 2 and the heat insulation plate 1. The assembly process is simple and easy to operate, improving the pre-assembly efficiency.

[0055] It should be noted that the distance between the center of the locking bead 221 and the center of the first locking ring 22, and the distance between the center of the locking hole 232 and the center of the second locking ring 23, must be less than the width of the elongated adjustment hole 11 to ensure that the first fastener 2 can rotate smoothly around its own axis within the elongated adjustment hole 11.

[0056] In some embodiments, see Figure 4 and Figure 5 The second retaining ring 23 is connected to two disassembly rings 233. The disassembly rings 233 extend away from the first retaining ring 22. The two disassembly rings 233 are rotation force application points, so as to disassemble and separate the first fastener 2 from the body stud by rotating the first fastener 2.

[0057] In the embodiment where the first connecting part 21 is a claw 231, when it is necessary to disassemble the heat insulation plate 1, the first fastener 2 can be rotated to make the locking end 2311 of the claw 231 move along the thread direction of the body stud and move along the axial direction of the body stud at the same time, thereby realizing the separation of the first fastener 2 from the body stud, and thus realizing the easy disassembly of the heat insulation plate 1.

[0058] Specifically, a simple tool with two insertion tips, such as tweezers or scissor-shaped clips, can be used. The two tips are inserted into the two disassembly rings 233 respectively. The operator holds and rotates the simple tool to drive the first fastener 2 to rotate.

[0059] Specifically, the disassembly ring 233 can be directly welded to the second retaining ring 23, or a through hole can be first made in the second retaining ring 23, and then the disassembly ring 233 can be welded to a position coaxial with the through hole (e.g., Figure 5 and Figure 6 (As shown); the disassembly ring 233 does not require precision machining and can be made directly from scrap or leftover material with a central hole. It is sufficient for two disassembly rings 233 to form rotational force points spaced apart on both sides of the body stud.

[0060] The two disassembly rings 233 simplify the disassembly process of the heat insulation plate 1 and reduce the processing cost; moreover, the disassembly process will not cause additional damage to the first fastener 2 and the heat insulation plate 1, and the disassembled parts can be reused, reducing maintenance and replacement costs.

[0061] In some embodiments, see Figure 1 and Figure 8 The heat insulation plate 1 is also provided with a positioning hole 12, which is spaced apart from the elongated adjustment hole 11. A second fastener 5 is connected to the positioning hole 12. The second fastener 5 has a second connecting part 51 connected to the body reference stud. The second fastener 5 can rotate within the positioning hole 12.

[0062] In this embodiment, the structure of the second fastener 5 is the same as that of the first fastener 2. It can also be pre-integrated and connected to the heat insulation plate 1, and connected to the vehicle body reference stud (same as the vehicle body stud) through the second connecting part 51 (same structure as the first connecting part 21). The only difference is that the positioning hole 12 is a circular hole, and the second fastener 5 can only rotate along its own axis within the positioning hole 12. The rotation of the second fastener 5 within the positioning hole 12 is to adapt to the connection or disassembly requirements of the second connecting part 51 and the vehicle body reference stud. The specific implementation method is the same as that of the first fastener 2, and will not be described again here.

[0063] During installation, the operator holds the heat insulation plate 1 and aligns the positioning hole 12 with the vehicle body reference stud. At this point, it is only necessary to roughly align the elongated adjustment hole 11 with the vehicle body stud, and then connect it to the vehicle body reference stud via the second connecting part 51. The heat insulation plate 1 is then positioned at a single point and can maintain the preset installation posture without needing to be held by hand. The first fastener 2 within each elongated adjustment hole 11 is then slid in sequence, aligning and connecting the first connecting part 21 of each first fastener 2 with the corresponding vehicle body stud axially, thus completing the installation of the heat insulation plate 1. The positioning hole 12 and the second fastener 5 provide a positioning reference for the installation of the heat insulation plate 1, simplifying the installation process and reducing the difficulty of operation.

[0064] In some embodiments, see Figure 1 The heat insulation plate 1 has a heat insulation cavity on the side away from the exhaust system, and the heat insulation plate 1 is provided with an air vent 13 that communicates with the heat insulation cavity; a baffle plate 3 is hinged to the heat insulation plate 1, and the baffle plate 3 can swing to close the air vent 13 or open the air vent 13.

[0065] It's important to understand that while heat shield 1 effectively isolates the exhaust system from the protected components, the ambient temperature around it will rise as heat accumulates. When the vehicle is in motion, the flowing air can carry away this heat, thus lowering the ambient temperature. However, while heat shield 1 insulates from heat, it also obstructs airflow. This means that the protected components cannot quickly dissipate heat through airflow after the ambient temperature rises. Prolonged exposure to this high-temperature environment will significantly reduce the lifespan of the protected components, thereby increasing the risk of vehicle malfunctions and maintenance costs.

[0066] In this embodiment, the protected component is located inside the heat insulation cavity. When the vehicle is stationary or traveling at low speed, the wind deflector 3 closes the air vent 13, and the heat insulation plate 1 can effectively block the heat from the exhaust system from radiating into the heat insulation cavity. When the vehicle is traveling at high speed, the wind deflector 3 swings to open the air vent 13, allowing the flowing air to enter the heat insulation cavity through the air vent 13, carrying away the heat accumulated in the heat insulation cavity, and effectively reducing the ambient temperature of the protected component.

[0067] The structure of the wind deflector 3 and the air vent 13 is simple, practical and easy to implement. It can not only effectively isolate the heat of the exhaust system, but also introduce outside air flow when the vehicle is running, quickly remove the accumulated heat, and significantly extend the service life of the protected components.

[0068] Specifically, the shape of the air vent 13 can be square, elliptical, oblong, or other shapes. The shape of the baffle 3 only needs to be able to completely close the air vent 13. The swing of the baffle 3 can be opened by wind force or closed by gravity; it can also be electrically controlled by designing an electronic control device.

[0069] For some specific embodiments, please refer to Figure 1 The heat insulation plate 1 includes a bent portion 15 and an isolation portion 16 connected sequentially from front to back. The heat insulation cavity is located on the side of the isolation portion 16 away from the exhaust system. The plate surface of the bent portion 15 is set at an angle to the front-back direction. The air vent 13 is provided on the bent portion 15 and faces forward. The elongated adjustment hole 11 is provided on the isolation portion 16.

[0070] The bend 15, angled to the front-to-back direction, is located at the front of the insulation cavity. The air vent 13 is positioned on the bend 15, allowing outside air to flow directly into the insulation cavity from front to back when the baffle 3 is open. This high-speed airflow accelerates the air convection exchange between the insulation cavity and the outside air, significantly improving heat dissipation efficiency without affecting the insulation effect of the isolation section 16 on the exhaust system. An elongated adjustment hole 11 is located on the relatively flat isolation section 16, facilitating operator observation and sliding of the first fastener 2 for more precise alignment.

[0071] The angle between the bend 15 and the front-back direction can be an acute angle greater than 45°, such as 50°, 60° or 65°, or it can be a right angle, to ensure the windward air intake area of ​​the air vent 13.

[0072] Specifically, the front edge of the bent portion 15 is connected to a forward-extending fitting portion 14, which is also provided with an elongated adjustment hole 11 to increase the connection area between the heat insulation plate 1 and the vehicle body, ensuring a secure installation. The fitting portion 14 may also be provided with an installation groove to avoid the protected parts or other components on the chassis.

[0073] For some specific embodiments, please refer to Figure 1 and Figure 3 The wind deflector 3 and the bent part 15 are hinged together by the hinge shaft 4; the bent part 15 is provided with a first hinge ring 151, and the wind deflector 3 is provided with a second hinge ring 31. The hinge shaft 4 is rotatably engaged with the first hinge ring 151 and the second hinge ring 31 respectively.

[0074] In this embodiment, the wind deflector 3 is hinged to the bending part 15, and the wind deflector 3 can be vertically swung by setting the hinge pivot 4 horizontally. In this scenario, the airflow power when the vehicle is traveling at high speed can be used to blow the wind deflector 3 open to accelerate the heat dissipation of the heat insulation cavity. As the vehicle speed decreases, the wind deflector 3 slowly swings back to the closed air vent 13 under the action of gravity. No manual operation intervention or additional electronic control device is required throughout the process, which is suitable for the dynamic driving conditions of the vehicle and is more convenient to use.

[0075] Specifically, when installing the wind deflector 3, the first hinge ring 151 and the second hinge ring 31 are coaxially aligned, and the hinge shaft 4 is inserted into the communicating hole formed by the first hinge ring 151 and the second hinge ring 31, thereby achieving a rotatable connection between the wind deflector 3 and the bent portion 15. The above structure is simple to process, low in cost, requires no additional maintenance, and is resistant to high temperatures and vibration, making it suitable for the harsh operating conditions of the exhaust system.

[0076] Furthermore, rubber pads can be provided on the wind deflector 3 or the bending part 15 to prevent the wind deflector 3 from rigidly colliding with the surface of the bending part 15 when the air vent 13 is closed, thus avoiding additional vibration and noise.

[0077] Based on the same inventive concept, this application also provides a vehicle including the aforementioned exhaust system heat insulation structure.

[0078] The vehicle provided in this application embodiment, having included the aforementioned exhaust system heat insulation structure, possesses all the beneficial effects of the aforementioned exhaust system heat insulation structure. It can significantly reduce the difficulty of aligning and installing the first connecting part 21 and the body stud, directly shortening the assembly time per assembly. Furthermore, it forms an integrated structure of the first fastener 2 and the heat insulation plate 1, eliminating the extra step of separately removing the first fastener 2, simplifying the assembly process, reducing operational difficulty, and effectively improving the assembly efficiency of the exhaust system.

[0079] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat insulation structure for an exhaust system, characterized in that, include: The heat insulation plate (1) is provided with a plurality of elongated adjustment holes (11), each elongated adjustment hole (11) corresponding to a stud on the vehicle body; and A plurality of first fasteners (2) are connected one-to-one with a plurality of elongated adjustment holes (11). Each first fastener (2) has a first connecting portion (21) connected to the vehicle body stud. The first fastener (2) can slide along the length direction of the elongated adjustment hole (11) so that the first connecting portion (21) is axially aligned with the vehicle body stud.

2. The exhaust system heat insulation structure as described in claim 1, characterized in that, The first fastener (2) includes: The first retaining ring (22) is located on the side of the heat insulation plate (1) away from the exhaust system; and The second retaining ring (23) is connected to the first retaining ring (22) and is located on the other side of the heat insulation plate (1), and the first connecting part (21) is located on the second retaining ring (23); An annular gap (24) is formed between the first retaining ring (22) and the second retaining ring (23), and the heat insulation plate (1) is inserted into the annular gap (24) so ​​that the first fastener (2) can slide or rotate in the elongated adjustment hole (11).

3. The exhaust system heat insulation structure as described in claim 2, characterized in that, The first connecting part (21) consists of a plurality of claws (231) connected to the inner peripheral wall of the second retaining ring (23). The plurality of claws (231) are arranged at intervals along the circumference of the second retaining ring (23). Each claw (231) has a snap-fit ​​end (2311) that is raised away from the first retaining ring (22). The snap-fit ​​end (2311) is used to snap-fit ​​the outer peripheral wall of the vehicle body stud.

4. The exhaust system heat insulation structure as described in claim 2, characterized in that, The first retaining ring (22) has an arc-shaped protruding retaining bead (221), and the second retaining ring (23) has an arc-shaped recessed retaining hole (232). The retaining bead (221) and the retaining hole (232) engage to connect the first retaining ring (22) and the second retaining ring (23).

5. The exhaust system heat insulation structure as described in claim 3, characterized in that, The second retaining ring (23) is connected to two disassembly rings (233). The disassembly rings (233) extend away from the first retaining ring (22). The two disassembly rings (233) are rotation force points so as to disassemble and separate the first fastener (2) from the body stud by rotating the first fastener (2).

6. The exhaust system heat insulation structure as described in claim 1, characterized in that, The heat insulation plate (1) is also provided with a positioning hole (12), which is spaced apart from the elongated adjustment hole (11), and a second fastener (5) is connected to the positioning hole (12); The second fastener (5) has a second connecting portion (51) connected to the vehicle body reference stud, and the second fastener (5) is rotatable within the positioning hole (12).

7. A heat insulation structure for an exhaust system as described in any one of claims 1-6, characterized in that, The heat insulation plate (1) has a heat insulation cavity on the side away from the exhaust system, and the heat insulation plate (1) is provided with an air vent (13) that communicates with the heat insulation cavity; A baffle plate (3) is hinged to the heat insulation plate (1), and the baffle plate (3) can swing to close the air vent (13) or open the air vent (13).

8. The exhaust system heat insulation structure as described in claim 7, characterized in that, The heat insulation plate (1) includes a bent portion (15) and an isolation portion (16) connected sequentially from front to back. The heat insulation cavity is located on the side of the isolation portion (16) away from the exhaust system. The plate surface of the bent portion (15) is set at an angle to the front-back direction. The air vent (13) is provided on the bent portion (15) and faces forward. The elongated adjustment hole (11) is provided on the isolation portion (16).

9. The exhaust system heat insulation structure as described in claim 8, characterized in that, The wind deflector (3) and the bent portion (15) are hinged together by a hinge pivot. The bent portion (15) is provided with a first hinge ring (151), and the wind deflector (3) is provided with a second hinge ring (31). The hinge shaft is rotatably engaged with the first hinge ring (151) and the second hinge ring (31) respectively.

10. A vehicle, characterized in that, Including a thermal insulation structure for an exhaust system as described in any one of claims 1-9.

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