Anti-vibration and noise-reduction type EGR valve connecting pipe
By introducing auxiliary stabilizing and noise-reducing components into the EGR valve connecting pipe, the resonance problem was solved, achieving stability and noise reduction in the connecting pipe, ensuring the stability of the seal and reducing noise.
Patent Information
- Application Number
- CN202520477608.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing anti-vibration and noise reduction EGR valve connecting pipes are prone to resonance when the buffer frequency is close to the engine vibration frequency, resulting in increased vibration amplitude of the connecting pipe, repeated deformation of the seals, and eventual damage.
The system employs auxiliary stabilization and noise reduction components, including an arc plate, spring sheet, mounting plate, connecting rod, buffer, and expansion joint body, to reduce noise transmission and ensure seal stability by converting and buffering vibration frequencies.
It effectively reduces resonance, improves the stability of the connecting pipe, ensures that the seals do not fall off, reduces noise, and enhances driving comfort and environmental performance.
Smart Images
Figure CN223767622U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, and in particular to a vibration-resistant and noise-reducing EGR valve connecting pipe. Background Technology
[0002] Vibration-resistant and noise-reducing EGR valve connecting pipes are commonly used in automotive engine exhaust gas recirculation systems. They can draw some exhaust gas back from the exhaust pipe to the intake pipe, reducing combustion temperature and nitrogen oxide emissions. At the same time, thanks to their special structure and materials, they effectively resist vibrations caused by engine and exhaust gas flow, reducing operating noise and improving driving comfort and environmental performance.
[0003] In practical applications, existing vibration-damping and noise-reducing EGR valve connecting pipes, used in conjunction with vibration-damping supports and stabilizing pipes, can meet the basic requirements for vibration and noise reduction. However, the following problems still exist:
[0004] Common methods for damping EGR valve connecting pipes include using damping brackets. Since one end of the bracket is connected near the vehicle frame, when the buffer frequency generated by the bracket during damping is close to the vibration frequency generated by the engine, resonance will occur, leading to an increase in the vibration amplitude of the connecting pipe. This, in turn, causes the seals to deform repeatedly and eventually become damaged. Therefore, this application provides a vibration-resistant and noise-reducing EGR valve connecting pipe to meet the requirements. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a vibration-resistant and noise-reducing EGR valve connecting pipe.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vibration-resistant and noise-reducing EGR valve connecting pipe, comprising a connecting pipe body and a connecting member disposed at one end of the connecting pipe body;
[0007] An auxiliary stabilizing component is placed inside the cavity of the connecting member. The auxiliary stabilizing component includes an arc-shaped plate fixedly connected to the top of the connecting tube body. A spring piece is fixedly connected to the top of the arc-shaped plate. A mounting plate is fixedly connected to the top of the spring piece. A first fixing block is fixedly connected to the top of the mounting plate. A first connecting rod is rotatably connected to the side of the first fixing block. A third fixing block is rotatably connected to one end of the first connecting rod. The top of the third fixing block is slidably connected to the inner wall of the connecting member. A second connecting rod is rotatably connected to the side of the first connecting rod.
[0008] A noise reduction component is placed at one end of the connecting member near the connecting pipe body, and the noise reduction component includes an expansion joint body installed on the outer surface of the connecting pipe body.
[0009] Further, the mounting plate is fixedly connected with a limiting block at one end away from the first fixing block, and a sliding groove is formed in the side surface of the limiting block.
[0010] The technical effects of the above technical scheme are that the sliding groove is formed to limit the movement track of the sliding rod.
[0011] Further, the side surface of one end of the second connecting rod is fixedly connected with a sliding rod, one end of the sliding rod extends into the inner cavity of the sliding groove, and one end of the sliding rod is slidably connected with the inner cavity of the sliding groove.
[0012] The technical effects of the above technical scheme are that the sliding rod and the sliding groove are matched to limit the movement track of the first connecting rod and the second connecting rod.
[0013] Further, the side surface of one end of the second connecting rod away from the sliding rod is rotatably connected with a second fixing block, and the top of the second fixing block is fixedly connected with a buffer.
[0014] The technical effects of the above technical scheme are that the second fixing block and the buffer are matched to further buffer the vibration generated by the engine.
[0015] Compared with the prior art, the advantages and positive effects of the utility model are that,
[0016] The connecting member is arranged to connect the connecting pipe body with the EGR valve, when the EGR valve vibrates, the vibration is transmitted to the connecting pipe body through the connecting member, and then transmitted to the outer surfaces of the arc-shaped plate and the elastic sheet through the connecting pipe body, when the transmission occurs, the mounting plate deforms to preliminarily buffer the stress generated by the vibration, the mounting plate fixedly connected to the top of the elastic sheet further transmits the stress generated by the vibration to the first fixing block, the first connecting rod and the second connecting rod are matched to convert most of the chaotic vibration frequency into axial stress, the second fixing block rotatably connected to the side surface of the second connecting rod and the buffer are matched to further reduce the influence of the vibration on the connecting pipe body, effectively improve the stability of the connecting pipe body, the sealing element is arranged at one end of the first fixing block away from the limiting block to push the sealing element to the connection between the connecting member and the connecting pipe body by using the converted axial stress, thereby ensuring that the sealing element keeps the sealing effect on the connection, the expansion joint body is arranged on the outer surface of the connecting pipe body to absorb vibration energy by expansion and deformation of the expansion joint body, reduce the transmission of vibration, and further reduce the noise generated by the vibration. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A three-dimensional structure schematic view of an anti-vibration and noise reduction type EGR valve connecting pipe is provided.
[0018] Figure 2 The utility model provides an inside section view structure schematic drawing of anti vibration noise reduction type EGR valve connecting pipe is provided;
[0019] Figure 3 The utility model provides a section view structure schematic drawing of auxiliary stabilizing subassembly of anti vibration noise reduction type EGR valve connecting pipe is provided;
[0020] Figure 4 The utility model provides a section view structure schematic drawing of noise reduction subassembly of anti vibration noise reduction type EGR valve connecting pipe is provided.
[0021] Legend:
[0022] 1, connecting pipe body;11, connecting member;
[0023] 2, auxiliary stabilizing subassembly;21, arc plate;22, elastic sheet;23, mounting plate;24, first fixed block;25, first connecting rod;26, limit block;27, second connecting rod;28, second fixed block;29, buffer;210, first recess;211, sliding groove;212, sliding rod;213, sealing element;214, third fixed block;
[0024] 3, noise reduction subassembly;31, expansion joint body;32, rubber sleeve ring;33, second recess. Specific embodiments
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0026] As shown in Figure 1 - Figure 4 The utility model provides a technical scheme: a kind of anti vibration noise reduction type EGR valve connecting pipe, connecting pipe body 1 and the connecting member 11 being set to one end of connecting pipe body 1;
[0027] The auxiliary stabilizing assembly 2 is arranged in the inner cavity of the connecting member 11, and the auxiliary stabilizing assembly 2 comprises an arc-shaped plate 21 fixedly connected to the top of the connecting pipe body 1, a spring plate 22 fixedly connected to the top of the arc-shaped plate 21, an installation plate 23 fixedly connected to the top of the spring plate 22, a first fixing block 24 fixedly connected to the top of the installation plate 23, a first connecting rod 25 rotatably connected to the side surface of the first fixing block 24, and a second connecting rod 27 rotatably connected to the side surface of the first connecting rod 25.
[0028] The noise reduction assembly 3 is arranged at one end of the connecting member 11 close to the connecting pipe body 1, and the noise reduction assembly 3 comprises an expansion joint body 31 arranged on the outer surface of the connecting pipe body 1, a limiting block 26 fixedly connected to the end of the installation plate 23 away from the first fixing block 24, a sliding groove 211 formed in the side surface of the limiting block 26, a sliding rod 212 fixedly connected to the side surface of one end of the second connecting rod 27, one end of the sliding rod 212 extending into the inner cavity of the sliding groove 211, one end of the sliding rod 212 being slidably connected to the inner cavity of the sliding groove 211, a second fixing block 28 rotatably connected to the side surface of the end of the second connecting rod 27 away from the sliding rod 212, and a buffer 29 fixedly connected to the top of the second fixing block 28. Through the connecting member 11 arranged at one end of the connecting pipe body 1, the EGR valve and the connecting pipe body 1 can be connected, when the exhaust gas is discharged, the exhaust gas collides with the inner wall of the connecting pipe body 1, at the same time, the engine generates vibration, through the arc-shaped plate 21 and the spring plate 22 arranged at the top of the connecting pipe body 1, the stress generated by the collision of the exhaust gas with the inner wall of the connecting pipe body 1 can be absorbed, similarly, the vibration generated by the engine is transmitted to the connecting pipe body 1 through the connecting member 11, and then transmitted to the first fixing block 24 through the installation plate 23, through the cooperation of the first connecting rod 25 and the second connecting rod 27 rotatably connected to the side surface of the first fixing block 24, most of the disordered vibration stress generated by the engine can be converted into axial stress, thereby effectively reducing the resonance, at the same time, through the cooperation of the second fixing block 28 and the buffer 29 rotatably connected to the side surface of the second connecting rod 27, the axial stress can be buffered, through the cooperation of the limiting block 26 fixedly connected to the top of the installation plate 23 and the sliding rod 212, the movement track of the first connecting rod 25 and the second connecting rod 27 can be limited, thereby avoiding damage, through the sealing element 213 arranged at the end of the first fixing block 24 away from the second connecting rod 27, the converted axial stress can be used to ensure that the sealing element 213 will not fall off, thereby effectively improving the overall stability of the connecting pipe body 1.
[0029] Further, as Figure 1 andFigure 4 As shown: one end of the expansion joint body 31 is fixedly connected with a rubber collar 32, the inner wall of the expansion joint body 31 is provided with a second groove 33, by installing the expansion joint body 31 on the outer surface of the connecting pipe body 1, so as to rely on its own expansion and deformation to absorb vibration energy, reduce the transmission of vibration, and further reduce the noise generated by vibration. At the same time, by setting the rubber collar 32 at one end of the expansion joint body 31, the transmission of vibration can be further reduced. When the exhaust gas flow passes through the inner cavity of the second groove 33, the arc line of the inner cavity of the second groove 33 will interfere with the gas, so as to promote the phenomenon of turbulent flow and reflection of the exhaust gas, which is helpful to further consume the energy of the gas flow and enhance the noise reduction effect.
[0030] When the buffer 29 buffers the converted axial stress, a part of the unordered stress generated by the engine will affect the buffer 29, causing the position of the buffer 29 to deviate, as shown in Figure 3 As shown: In this scheme, the first fixed block 24 is provided with a sealing piece 213 away from one end of the first connecting rod 25, and the inner wall of the connecting member 11 is provided with a first groove 210. By setting an additional elastic material at the connection between the buffer 29 and the second fixed block 28, the buffering effect can be further improved. At the same time, the first groove 210 opened at the bottom of the connecting member 11 is set to be slightly larger than the buffer 29, so as to limit the activity space of the buffer 29 and reduce the deformation space of the buffer 29, thereby effectively improving the buffering effect.
[0031] Working principle:
[0032] As shown in Figures 1-4 As shown:
[0033] In use: first, one end of the connecting member 11 is connected with the port of the EGR valve, after installation is completed, start the EGR valve, at the same time, the automobile engine starts, at this time, the exhaust gas enters the inner cavity of the connecting pipe body 1 through the connecting member 11, when the exhaust gas passes through the inner cavity of the second groove 33, the arc line of the inner cavity of the second groove 33 will interfere with the gas, so as to promote the turbulence and reflection of the exhaust gas, which is helpful to consume the energy of the airflow and enhance the noise reduction effect, when the exhaust gas collides with the inner wall of the connecting pipe body 1, the stress is transmitted to the arc plate 21 and the spring piece 22 through the connecting pipe body 1, the spring piece 22 is compressed, so as to absorb the stress generated by the collision, at the same time, the disorderly stress generated by the automobile engine is transmitted to the connecting member 11 through the EGR valve, and then transmitted to the arc plate 21 from the connecting member 11, part of the disorderly stress is absorbed at the same time of the deformation of the spring piece 22, and then transmitted to the first fixed block 24 through the mounting plate 23, when the first fixed block 24 vibrates, the disorderly stress is converted through the cooperation of the first connecting rod 25 and the second connecting rod 27, so as to drive the sliding rod 212 to move axially along the inner cavity of the sliding groove 211 through the second connecting rod 27, when the second connecting rod 27 moves, the axial stress is transmitted to the buffer 29 through the second fixed block 28, and the converted stress is buffered through the cooperation of the buffer 29 and the first groove 210, so as to effectively avoid the resonance of the frequency generated in the damping process and the engine frequency, so as to avoid the condition that the vibration is intensified.
[0034] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the protection scope of the present application technical scheme.
Claims
1. A vibration-resistant noise-reducing EGR valve connection pipe, characterized by, The utility model relates to a connecting pipe body (1) and the connecting member (11) of setting in connecting pipe body (1) one end, including: Auxiliary stabilizing assembly (2) is placed in the inner chamber of connecting member (11), and the auxiliary stabilizing assembly (2) includes the arc plate (21) fixedly connected to the top of connecting pipe body (1), the top of arc plate (21) is fixedly connected with the spring piece (22), the top of spring piece (22) is fixedly connected with the mounting plate (23), the top of mounting plate (23) is fixedly connected with the first fixed block (24), the side of first fixed block (24) is rotatably connected with first connecting rod (25), one end of first connecting rod (25) is rotatably connected with third fixed block (214), the top of third fixed block (214) is slidably connected with the inner wall of connecting member (11), and the side of first connecting rod (25) is rotatably connected with second connecting rod (27); Noise reduction subassembly (3) is placed in the one end of connecting member (11) close to connecting pipe body (1), and the noise reduction subassembly (3) includes the expansion joint body (31) installed on the outer surface of connecting pipe body (1). The end, away from the first fixed block (24) of mounting plate (23) is fixedly connected with the limiting block (26), and the side of limiting block (26) is provided with the sliding slot (211).
2. The anti-rattle, noise reducing EGR valve connection pipe according to claim 1, wherein The side of one end of second connecting rod (27) is fixedly connected with the sliding rod (212), one end of sliding rod (212) extends to the inner chamber of sliding slot (211), and one end of sliding rod (212) is slidably connected with the inner chamber of sliding slot (211).
3. The anti-rattle, noise reducing EGR valve connection pipe according to claim 1, wherein The side of one end, away from sliding rod (212) of second connecting rod (27) is rotatably connected with the second fixed block (28), and the top of second fixed block (28) is fixedly connected with the buffer (29).
4. The anti-rattle, noise reducing EGR valve connection tube of claim 1, wherein, The end, away from first connecting rod (25) of first fixed block (24) is provided with the sealing element (213), and the inner wall of connecting member (11) is provided with the first recess (210).
5. The anti-rattle, noise reducing EGR valve connection tube of claim 1, wherein, One end of expansion joint body (31) is fixedly connected with rubber sleeve ring (32).
6. The anti-rattle, noise reducing EGR valve connection tube of claim 1, wherein, The inner wall of expansion joint body (31) is provided with the second recess (33).
7. The anti-rattle, noise reducing EGR valve connection tube of claim 1, wherein