Lightweight automobile exhaust pipe assembly
By designing a lightweight automotive exhaust pipe assembly and utilizing jet-driven cleaning components and rubber fixing blocks, the problems of deformation and corrosion during exhaust pipe sleeve installation were solved, achieving convenient installation and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO NEW HUATAI PLASTICS ELECTRIC APPLIANCE
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing automotive exhaust pipe sleeves are prone to damaging the outer wall of the exhaust pipe during installation, and moisture retention leads to corrosion of the inner wall, affecting service life.
Design a lightweight automotive exhaust pipe assembly, including a connecting cylinder and an internal cleaning component. The cleaning component is driven to move axially by jet propulsion, and cooperates with a closing component to open the other end of the connecting cylinder for exhaust. A rubber fixing block is used to prevent the exhaust pipe from deforming.
It achieves reliable installation and convenient cleaning, improves the service life and safety of the exhaust pipe assembly, and prevents exhaust pipe deformation and internal wall corrosion.
Smart Images

Figure CN224260428U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive component technology, and more particularly to a lightweight automotive exhaust pipe assembly. Background Technology
[0002] An exhaust pipe sleeve is a sleeve installed at the tail of a car's exhaust pipe. It is commonly known as an exhaust pipe sleeve and can prevent the exhaust pipe from deforming and can also play a role in pressurization and turbulence, thereby reducing the noise emitted by the exhaust pipe to a certain extent.
[0003] However, existing exhaust pipe sleeves typically use the end of a fastening bolt to directly clamp onto the original exhaust pipe. Therefore, during installation, the fastening bolt is tightened forcefully, squeezing and deforming the outer wall of the exhaust pipe, potentially causing damage. Furthermore, when too much water enters the sleeve, the residual moisture on the inner wall cannot drain quickly enough, leading to corrosion and rust, negatively impacting the sleeve's lifespan. Therefore, a lightweight automotive exhaust pipe assembly that is reliable to install, easy to clean, and has an extended service life is proposed. Utility Model Content
[0004] One objective of this application is to provide a lightweight automotive exhaust pipe assembly that is reliably installed, easy to clean, and has an extended service life.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a lightweight automotive exhaust pipe assembly, including a connecting cylinder; one end of the connecting cylinder is connected to an automotive exhaust pipe, a cleaning component is elastically disposed inside the connecting cylinder, and a closing component is disposed at the other end of the connecting cylinder, the cleaning component cooperating with the closing component; the automotive exhaust pipe is adapted to eject air to drive the cleaning component to move along the axial direction of the connecting cylinder, thereby opening the closing component to expose the exhaust at the other end of the connecting cylinder.
[0006] Preferably, one end of the connecting cylinder is provided with a connecting groove, and at least one side of the connecting groove is provided with a fixing member, which is adapted to compress and fix the automobile exhaust pipe inserted into the connecting groove.
[0007] Preferably, the fixing component includes a threaded block threaded to one end of the connecting cylinder, and a fixing block installed on the side of the threaded block; the fixing block cooperates with the vehicle exhaust pipe.
[0008] Preferably, the fixing block is made of rubber, and the side of the fixing block is provided with multiple protrusions.
[0009] Preferably, the connecting cylinder has limiting grooves on both sides, and the cleaning component includes an annular block and limiting blocks disposed on both sides of the annular block; the two limiting blocks are elastically disposed in the corresponding limiting grooves.
[0010] Preferably, the inner wall of the connecting cylinder is horizontally arranged, and the two limiting grooves are opened in parallel on the inner wall of the connecting cylinder.
[0011] Preferably, the closing assembly includes a pair of rotating bars and a pair of closing blocks; the pair of rotating bars are elastically rotatably disposed at the other end of the connecting cylinder, and the pair of closing blocks are installed on the sides of the corresponding rotating bars.
[0012] Preferably, both of the closed blocks are semi-circular, and the pair of closed blocks are adapted to be spliced together to form a circle that matches the other end of the connecting cylinder.
[0013] Compared with the prior art, the beneficial effects of this application are as follows: the side of the connecting cylinder is connected to the car exhaust pipe, and a cleaning component is elastically provided inside the connecting cylinder. The cleaning component cooperates with the closing component provided at the other end of the connecting cylinder. Therefore, during installation, the connecting cylinder is tightly fitted onto the side of the exhaust pipe. During cleaning, the car exhaust pipe can spray air to drive the cleaning component to move elastically to abut against the closing component. As a result, the closing component will rotate along the installation position to open and expose the other end of the connecting cylinder for exhaust. The whole device is easy to install, convenient to clean, and safe and reliable. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This utility model Figure 1 Schematic diagram of the left-center view structure.
[0016] Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure from the center.
[0017] Figure 4 This utility model Figure 3 Enlarged cross-sectional structural diagram of the central fixing component.
[0018] Figure 5 This utility model Figure 4 Enlarged cross-sectional view of the fixed component during fixation.
[0019] Figure 6 This utility model Figure 3 A schematic diagram of the cross-sectional structure when the closed component is open.
[0020] In the diagram: 1. Connecting cylinder; 11. Connecting groove; 12. Fixing component; 121. Threaded block; 122. Fixing block; 13. Limiting groove; 2. Cleaning component; 21. Annular block; 22. Limiting block; 3. Closing assembly; 31. Rotating bar; 32. Closing block. Detailed Implementation
[0021] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0025] One preferred embodiment of this application, such as Figures 1 to 6As shown, a lightweight automotive exhaust pipe assembly includes a connecting cylinder 1. One end of the connecting cylinder 1 is connected to the exhaust pipe of the vehicle. A cleaning component 2 is elastically provided inside the connecting cylinder 1. The cleaning component 2 facilitates the cleaning of water and debris from the inner wall of the connecting cylinder 1, thereby keeping the connecting cylinder 1 clean and tidy, preventing corrosion of the inner wall of the connecting cylinder 1, and thus extending the service life of the connecting cylinder 1. A closing component 3 is provided at the other end of the connecting cylinder 1. The closing component 3 facilitates the closure of the other end of the connecting cylinder 1 when not in use, thereby effectively preventing water or debris from entering the connecting cylinder 1 and affecting its use. During installation, one end of the connecting cylinder 1 can be connected and fixed to the exhaust pipe. At this time, the connecting cylinder 1 can be stably connected to the exhaust pipe. When the car is moving, the air jet in the exhaust pipe can push the cleaning component 2 to move elastically along the axial direction of the connecting cylinder 1. Thus, the cleaning component 2 scrapes water and debris off the inner wall of the connecting cylinder 1. After the cleaning component 2 moves, it can abut against the closing component 3, so that the closing component 3 can rotate in the installation position, thereby opening the other end of the connecting cylinder 1, allowing the exhaust pipe to exhaust better. The operation is safe and convenient, highly practical, and helps to extend the service life of the connecting cylinder 1.
[0026] In this embodiment, as Figure 1 and Figure 3 As shown, it can be understood that in order to better and more stably connect one end of the connecting cylinder 1 with the exhaust pipe, a connecting groove 11 is provided at one end of the connecting cylinder 1. At least one side of the connecting groove 11 is provided with a fixing member 12. By providing the connecting groove 11, the exhaust pipe can be inserted into the connecting groove 11, and then the outer wall of the inserted exhaust pipe is pressed and fixed by the fixing member 12. Thus, the fixing member 12 can press the outer wall of the exhaust pipe, and the inner wall of the exhaust pipe fits against the inner wall of the connecting groove 11, thereby effectively preventing the exhaust pipe from being deformed due to excessive pressing by the fixing member 12, which is conducive to better protection of the exhaust pipe, improving the service life of the exhaust pipe and facilitating connection. When installing, the connecting groove 11 on one end of the connecting cylinder 1 can be aligned with the exhaust pipe, so that the exhaust pipe can enter the connecting groove 11. After the exhaust pipe enters the bottom of the connecting groove 11, the fixing member 12 can be rotated so that the side of the fixing member 12 fits and presses against the outer wall of the exhaust pipe, thereby making the exhaust pipe stably and safely connected to the connecting cylinder 1.
[0027] It is known that a connecting groove 11 is provided at one end of the connecting cylinder 1, so that one end of the connecting cylinder 1 has a connecting port and a connecting groove 11. At the same time, in order to make the exhaust pipe better connected to the connecting cylinder 1, the diameter of the connecting port is less than or equal to the diameter of the exhaust pipe, and the diameter of the connecting groove 11 is greater than or equal to the diameter of the exhaust pipe, so that the exhaust pipe can be better and more tightly connected to one end of the connecting cylinder 1.
[0028] In this embodiment, as Figure 1 , Figures 3 to 5 As shown, the fixing member 12 includes a threaded block 121 threaded at one end of the connecting cylinder 1, and a fixing block 122 installed at the bottom of the threaded block 121. The side of the fixing block 122 mates with the outer wall of the exhaust pipe inserted into the connecting groove 11. During installation, the connecting groove 11 at one end of the connecting cylinder 1 can be aligned with the exhaust pipe, allowing the exhaust pipe to extend into the connecting groove 11. After extending into the bottom of the connecting groove 11, the threaded block 121 can be rotated. The rotation of the threaded block 121 can cause the fixing block 122 to move downward. The downward movement of the fixing block 122 allows the bottom of the fixing block 122 to fit and press against the outer wall of the exhaust pipe, thereby pressing and fixing the installed exhaust pipe. The operation is simple and convenient, safe and reliable, and highly practical.
[0029] In this embodiment, as Figure 4 and Figure 5 As shown, it can be understood that in order to better protect the outer wall of the exhaust pipe and prevent deformation due to compression, the fixing block 122 is made of rubber, and multiple protrusions are provided on the surface of the fixing block 122 that contacts the exhaust pipe. Thus, when the fixing block 122 compresses the outer wall of the exhaust pipe, the fixing block 122 can deform and compress the exhaust pipe, so that the multiple protrusions can better connect tightly with the exhaust pipe and improve the stability of the device after installation.
[0030] In this embodiment, as Figures 1 to 3 As shown, limiting grooves 13 are provided on both sides of the connecting cylinder 1. The cleaning component 2 includes an annular block 21 and limiting blocks 22 disposed on both sides of the annular block 21. The two limiting blocks 22 are elastically disposed in the corresponding limiting grooves 13 by springs. Therefore, during installation, the connecting groove 11 on one end of the connecting cylinder 1 can be aligned with the exhaust pipe, so that the exhaust pipe can be inserted into the connecting groove 11. After being inserted into the bottom of the connecting groove 11, the threaded block 121 can be rotated. The rotation of the threaded block 121 can drive the fixing block 122 to move down. The downward movement of the fixing block 122 can make the fixing block 122 move down. The bottom of 22 is pressed against the outer wall of the exhaust pipe, thereby fixing one end of the connected cylinder 1 after installation. When the car is driving, the gas ejected from the exhaust pipe can push the annular block 21 to move. When the annular block 21 moves, it can be driven by the elasticity of the spring, so that the annular block 21 can push the water flow on the inner wall of the connected cylinder 1. When the cleaning part 2 moves, it can push the closing component 3, so that the closing component 3 can rotate at the installation position to open the other end of the connected cylinder 1, thereby connecting the whole device and facilitating the exhaust pipe to exhaust.
[0031] In this embodiment, as Figures 1 to 3As shown, the inner wall of the connecting cylinder 1 is horizontally arranged, and two limiting grooves 13 are parallelly formed on the inner wall of the connecting cylinder 1. During installation, the connecting cylinder 1 can be aligned with the exhaust pipe, allowing the exhaust pipe to enter the connecting groove 11. The threaded block 121 drives the fixing block 122 to press against the exhaust pipe, facilitating a stable installation of the connecting cylinder 1 on the exhaust pipe. When the car starts, the exhaust pipe emits gas, which pushes the annular block 21 to move. As the annular block 21 moves, it drives the limiting... The limiting block 22 moves to a limit position, allowing it to slide within the limiting groove 13. This allows the annular block 21 to scrape away water from the connecting cylinder 1, effectively preventing corrosion of the inner wall of the connecting cylinder 1 and extending its service life. When the annular block 21 moves, it can cooperate with the closing component 3, allowing the closing component 3 to rotate in the installation position, thereby opening the opening at the other end of the connecting cylinder 1. This allows the annular block 21 to push the water out and also allows the vent pipe to vent normally.
[0032] In this embodiment, as Figure 2 , Figure 3 and Figure 6 As shown, it can be understood that the closing assembly 3 includes a pair of rotating bars 31 and closing blocks 32; the pair of rotating bars 31 are elastically mounted on both sides of the opening at the other end of the connecting cylinder 1 by torsion springs, and the two closing blocks 32 are mounted on the corresponding rotating bars 31; during installation, the connecting groove 11 on one end of the connecting cylinder 1 is aligned with the exhaust pipe, so that the exhaust pipe can extend into the connecting groove 11. After extending into the bottom of the connecting groove 11, the threaded block 121 can be rotated. The rotation of the threaded block 121 can drive the fixing block 122 to move down. The downward movement of the fixing block 122 can make the bottom of the fixing block 122 fit and press against the outer wall of the exhaust pipe, thereby fixing one end of the connected cylinder 1 after installation; when When the car starts, the exhaust pipe emits gas, which pushes the annular block 21 to move. As the annular block 21 moves, it drives the limiting block 22 to move in a limited position, so that the limiting block 22 can always slide within the limiting groove 13. This allows the annular block 21 to scrape away the water flow inside the connecting cylinder 1, effectively preventing the inner wall of the connecting cylinder 1 from rusting. When the annular block 21 moves, it can push the two closing blocks 32, so that the two closing blocks 32 can rotate along the installation position, thereby opening the opening at the other end of the connecting cylinder 1. This allows the annular block 21 to push the water flow out, and also allows the exhaust pipe to exhaust normally.
[0033] It should be noted that the torsion spring has less torque than the force generated by the exhaust pipe when the car is in motion. Therefore, when the car is in motion, the airflow generated by the exhaust pipe can push the annular block 21 and blow up the closed block 32. This makes it easier to scrape off the water droplets condensed on the connecting cylinder 1 when the annular block 21 moves, thus improving the service life of the connecting cylinder 1.
[0034] In this embodiment, as Figure 2 As shown, it can be understood that both of the pair of closing blocks 32 are semi-circular in shape. The pair of closing blocks 32 are suitable for splicing into a circle that matches the other end of the connecting cylinder 1. Thus, when the car stops, the outlet of the connecting cylinder 1 can be sealed by the pair of closing blocks 32 to prevent debris from entering the connecting cylinder 1, thereby effectively improving the safety and ease of use of the device.
[0035] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A lightweight automotive exhaust pipe assembly, characterized in that: The device includes a connecting cylinder; one end of the connecting cylinder is connected to a vehicle exhaust pipe, a cleaning component is elastically disposed inside the connecting cylinder, and a closing component is disposed at the other end of the connecting cylinder, the cleaning component cooperating with the closing component; the vehicle exhaust pipe is adapted to spray air to drive the cleaning component to move along the axial direction of the connecting cylinder, thereby opening the closing component to expose the exhaust at the other end of the connecting cylinder.
2. The lightweight automotive exhaust pipe assembly as described in claim 1, characterized in that: One end of the connecting cylinder is provided with a connecting groove, and at least one side of the connecting groove is provided with a fixing member, which is adapted to squeeze and fix the automobile exhaust pipe inserted into the connecting groove.
3. The lightweight automotive exhaust pipe assembly as described in claim 2, characterized in that: The fastener includes a threaded block threaded to one end of the connecting cylinder, and a fixing block installed on the side of the threaded block; the fixing block cooperates with the vehicle exhaust pipe.
4. The lightweight automotive exhaust pipe assembly as described in claim 3, characterized in that: The fixing block is made of rubber, and multiple protrusions are provided on the side of the fixing block.
5. The lightweight automotive exhaust pipe assembly as described in claim 1, characterized in that: Limiting grooves are provided on both sides of the connecting cylinder, and the cleaning component includes an annular block and limiting blocks disposed on both sides of the annular block; the two limiting blocks are elastically disposed in the corresponding limiting grooves.
6. The lightweight automotive exhaust pipe assembly as described in claim 5, characterized in that: The inner wall of the connecting cylinder is horizontally arranged, and the two limiting grooves are opened in parallel on the inner wall of the connecting cylinder.
7. The lightweight automotive exhaust pipe assembly as described in claim 5, characterized in that: The closing assembly includes a pair of rotating bars and a pair of closing blocks; the pair of rotating bars are elastically rotatably disposed at the other end of the connecting cylinder, and the pair of closing blocks are installed on the side of the corresponding rotating bars.
8. The lightweight automotive exhaust pipe assembly as described in claim 7, characterized in that: Both of the closed blocks are semi-circular in shape, and the pair of closed blocks are adapted to be spliced together to form a circle that matches the other end of the connecting cylinder.