Tail gas emission connecting device
By designing a exhaust emission connection device containing expansion forceps, the problem that existing devices cannot adapt to exhaust pipes of different shapes and sizes is solved, and the structure and installation operations are simplified, and practicality and versatility are improved.
Patent Information
- Application Number
- CN202420944577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-04-30
Smart Images
Figure CN222503064U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of waste gas treatment, in particular to a tail gas emission connecting device. Background Art
[0002] In the related technology, in the volatile organic compound detection experiment of the automobile interior, it is very important to keep the air in the volatile organic compound sampling cabin of the whole vehicle clean. Therefore, the automobile exhaust needs to be discharged out of the sampling cabin. The existing exhaust emission connection device can often only be used on a circular exhaust pipe. The exhaust emission connection device cannot be adapted to exhaust pipes of different shapes and sizes, and has a complex structure and cumbersome installation operation. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an exhaust gas connection device that can adapt to vehicle exhaust pipes of different shapes and sizes, enhance practicality, and the exhaust gas connection device has a simple structure and is easy to install and operate.
[0004] According to an embodiment of the utility model, the exhaust gas emission connection device includes: an exhaust gas emission pipeline and a fixing seat, a connecting piece and an expansion clamp, the fixing seat is used to fix the exhaust gas emission pipeline, the connecting piece defines a connecting channel running through the connecting piece, the connecting channel has a first open end and a second open end opposite to each other, the first open end is connected to the exhaust gas emission pipeline to connect the exhaust gas emission pipeline and the connecting channel, and the cross-sectional area of the connecting channel gradually increases from the first open end to the second open end, at least a part of the expansion clamp is arranged in the connecting channel, and the expansion clamp is suitable for extending into the vehicle exhaust pipe and abutting against the inner wall of the vehicle exhaust pipe.
[0005] According to the exhaust gas emission connection device of the embodiment of the present application, an expansion clamp is provided so that the connecting channel can be connected to the vehicle exhaust pipes of different shapes and sizes, so that the exhaust gas emission connection device can adapt to the vehicle exhaust pipes of different shapes and sizes, thereby enhancing practicality. The exhaust gas emission connection device has a simple structure and is easy to install and operate.
[0006] According to some embodiments of the utility model, the expansion pliers include: two expansion pliers arms and a first elastic member, a mounting column is fixedly provided in the connecting channel, the two expansion pliers arms are both sleeved on the mounting column and arranged along the axial direction of the mounting column, the two expansion pliers arms can be moved along the mounting column, the first elastic member is compressed between the two expansion pliers arms, and the expansion pliers arms are suitable for extending into a vehicle exhaust pipe and abutting against the inner wall of the vehicle exhaust pipe.
[0007] According to some embodiments of the utility model, the expansion clamp arm includes: a mounting section and an abutment section, the mounting section and the abutment section are connected, the mounting section is sleeved on the mounting column, the abutment section is suitable for abutting against the inner wall of the vehicle exhaust pipe, and an angle is formed between the abutment section and the mounting section so that the abutment section is bent in a direction away from the other expansion clamp arm.
[0008] According to some embodiments of the present invention, the mounting section is perpendicular to the mounting column.
[0009] According to some embodiments of the present invention, the connecting piece is configured as an annular structure.
[0010] According to some embodiments of the present utility model, the exhaust gas connection device further includes: a connecting pipe, which is connected between the exhaust gas pipeline and the first open end to connect the exhaust gas pipeline and the connecting channel.
[0011] According to some embodiments of the present invention, the connecting pipe is configured as a hose.
[0012] According to some embodiments of the utility model, the fixing seat includes: a base, a shock-absorbing pad and a clamping assembly, the shock-absorbing pad is fixed to the base, the clamping assembly is arranged on the shock-absorbing pad, and the clamping assembly is used to clamp the exhaust gas emission pipeline.
[0013] According to some embodiments of the utility model, the clamping assembly includes: a first clamping arm, a second clamping arm and a second elastic member, one end of the first clamping arm and one end of the second clamping arm are hinged, and the second elastic member is connected between the first clamping arm and the second clamping arm so that the first clamping arm and the second clamping arm clamp the exhaust pipe.
[0014] According to some embodiments of the present invention, the shock-absorbing pad includes multiple shock-absorbing pad layers, and the multiple shock-absorbing pad layers are stacked in sequence.
[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0017] Figure 1 It is a schematic structural diagram of an exhaust gas emission connection device according to an embodiment of the present application.
[0018] Reference numerals:
[0019] Exhaust connection device 1,
[0020] Exhaust pipe 10,
[0021] The fixing seat 20, the base 21, the shock absorbing pad 22, the shock absorbing pad layer 221, the clamping assembly 23, the first clamping arm 231, the second clamping arm 232, the second elastic member 233, the roller 24,
[0022] The connecting member 30, the connecting channel 31, the first open end 311, the second open end 312,
[0023] Expansion pliers 40, expansion pliers arms 41, mounting sections 411, abutment sections 412, first elastic members 42,
[0024] Connecting pipe 50,
[0025] Vehicle exhaust pipe 100 . DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0027] Reference below Figure 1 An exhaust gas connection device 1 according to an embodiment of the present invention is described.
[0028] According to the exhaust gas discharge connection device 1 of the embodiment of the utility model, Figure 1 As shown, the exhaust gas emission connecting device 1 includes: an exhaust gas emission pipeline 10 and a fixing seat 20, a connecting piece 30 and an expansion clamp 40, the fixing seat 20 is used to fix the exhaust gas emission pipeline 10, the connecting piece 30 defines a connecting channel 31 that passes through the connecting piece 30, and the connecting channel 31 has a first open end 311 and a second open end 312 opposite to each other. The first open end 311 is connected to the exhaust gas emission pipeline 10 to connect the exhaust gas emission pipeline 10 and the connecting channel 31. From the first open end 311 to the second open end 312, the cross-sectional area of the connecting channel 31 gradually increases, at least a part of the expansion clamp 40 is arranged in the connecting channel 31, and the expansion clamp 40 is suitable for extending into the vehicle exhaust pipe 100 and abutting against the inner wall of the vehicle exhaust pipe 100.
[0029] It should be noted that in the related technology, in the automobile interior volatile organic compound detection experiment, the vehicle is located in the sampling cabin, the vehicle is started, and it is very important to keep the air in the volatile organic compound sampling cabin of the entire vehicle clean. Therefore, the automobile exhaust needs to be discharged to the outside of the sampling cabin. Usually, an exhaust gas emission connecting device is used to connect to the vehicle exhaust pipe to discharge the automobile exhaust gas to the outside of the sampling cabin. However, the existing exhaust gas emission connecting device can often only be used on round vehicle exhaust pipes. The exhaust gas emission connecting device cannot be adapted to vehicle exhaust pipes of different shapes and sizes, and the structure is complex and the installation operation is cumbersome.
[0030] Based on this, the utility model proposes an exhaust gas discharge connection device 1, such as Figure 1 As shown, the exhaust gas emission connection device 1 includes an exhaust gas emission pipeline 10 and a fixing seat 20, a connecting piece 30 and an expansion clamp 40. The exhaust gas emission pipeline 10 is used to discharge automobile exhaust gas. The automobile exhaust gas enters the exhaust gas emission connection device 1 from the vehicle exhaust pipe 100 and is discharged from the exhaust gas emission pipeline 10. The exhaust gas emission pipeline 10 is fixed on the fixing seat 20. For example, the exhaust gas emission pipeline 10 can be clamped and fixed on the fixing seat 20, or the exhaust gas emission pipeline 10 can be clamped on the fixing seat 20. The connecting piece 30 is formed with a connecting channel 31, which runs through the connecting piece 30. The connecting channel 31 has a first open end 311 and a second open end 312. The first open end 311 and the second open end 312 are opposite to each other and spaced apart along the axial direction of the connecting channel 31. The first open end 311 is connected to the exhaust gas emission pipeline 10, so that the connecting channel 31 is connected to the exhaust gas emission pipeline 10. The vehicle exhaust pipe 100 is connected to the second open end 312 of the connecting channel 31, so that the vehicle exhaust pipe 100 is connected to the connecting channel 31. The automobile exhaust gas can enter the connecting channel 31 from the vehicle exhaust pipe 100 and then be discharged from the exhaust gas emission pipeline 10, thereby realizing the emission of automobile exhaust gas.
[0031] like Figure 1As shown, the cross-sectional area of the communication channel 31 gradually increases from the first open end 311 to the second open end 312, and the cross-sectional size of the second open end 312 is larger than the cross-sectional size of the first open end 311. At least part of the expansion clamp 40 is arranged in the communication channel 31, that is, the expansion clamp 40 can be partially arranged in the communication channel 31, or the expansion clamp 40 can be arranged in the communication channel 31 as a whole, and the expansion clamp 40 can extend into the vehicle exhaust pipe 100, and the expansion clamp 40 can abut against the inner wall of the vehicle exhaust pipe 100 to achieve the connection between the expansion clamp 40 and the vehicle exhaust pipe 100, so that the communication channel 31 can be connected to the vehicle exhaust pipe 100. The air pipe 100 is connected, and the expansion clamp 40 can adjust the opening size. The cross-sectional area of the second open end 312 is relatively large, which provides an environment for the expansion clamp 40 to change the opening size, so that the expansion clamp 40 can abut against the inner wall of the vehicle exhaust pipe 100 of different shapes and sizes, thereby realizing the connection between the expansion clamp 40 and the vehicle exhaust pipe 100 of different shapes and sizes, thereby realizing the adaptation of the exhaust gas emission connection device 1 to the vehicle exhaust pipe 100 of different shapes and sizes, thereby improving the practicality and versatility of the exhaust gas emission connection device 1, and the exhaust gas emission connection device 1 has a simple structure, and the installation and operation of the exhaust gas emission connection device 1 and the vehicle exhaust pipe 100 are simple.
[0032] In some embodiments of the present invention, Figure 1 As shown, the expansion pliers 40 may include: two expansion pliers arms 41 and a first elastic member 42. A mounting column 32 is fixedly provided in the connecting channel 31. The two expansion pliers arms 41 are both sleeved on the mounting column 32 and arranged along the axial direction of the mounting column 32. The two expansion pliers arms 41 can both move along the mounting column 32. The first elastic member 42 is compressed between the two expansion pliers arms 41. The expansion pliers arms 41 are suitable for extending into the vehicle exhaust pipe 100 and abutting against the inner wall of the vehicle exhaust pipe 100.
[0033] The expansion clamp 40 may include two expansion clamp arms 41 and a first elastic member 42. A mounting post 32 is fixedly arranged in the communication channel 31. The mounting post 32 may be fixedly connected to the communication member 30 by welding, bolt connection, etc. The two expansion clamp arms 41 are sleeved on the mounting post 32, thereby realizing the connection between the expansion clamp 40 and the communication member 30. The two expansion clamp arms 41 are arranged relatively to each other along the axial direction of the mounting post 32. The two expansion clamp arms 41 can move along the mounting post 32. The first elastic member 42 is compressed between the two expansion clamp arms 41. The two expansion clamp arms 41 can be connected to the first elastic member 42. When the expansion clamp 40 is ready to be extended into the vehicle When the vehicle exhaust pipe 100 is inserted, the two expansion clamp arms 41 can be pushed to move toward the first elastic member 42. The two expansion clamp arms 41 compress the first elastic member 42, and the first elastic member 42 generates elastic force. The first elastic member 42 stores energy. When the two expansion clamp arms 41 are extended into the vehicle exhaust pipe 100, the expansion clamp arms 41 are released, and the first elastic member 42 generates a reaction force on the two expansion clamp arms 41. The first elastic member 42 pushes the two expansion clamp arms 41 to move in a direction away from the first elastic member 42, so that the expansion clamp arms 41 abut against the inner wall of the vehicle exhaust pipe 100, thereby realizing a fixed connection between the expansion clamp 40 and the vehicle exhaust pipe 100. Under the elastic force of the first elastic member 42 and the limiting action of the vehicle exhaust pipe 100, the expansion clamp arm 41 can be fixed so that after the expansion clamp 40 is inserted into the vehicle exhaust pipe 100, the expansion clamp arm 41 no longer moves along the mounting column 32, thereby achieving a fixed connection between the exhaust gas emission connecting device 1 and the vehicle exhaust pipe 100. The opening size of the expansion clamp 40 can also be adjusted by the two expansion clamp arms 41 and the first elastic member 42, so that the exhaust gas emission connecting device 1 can be adapted to vehicle exhaust pipes 100 of different shapes and sizes.
[0034] In some embodiments of the present invention, Figure 1 As shown, the expansion clamp arm 41 may include: a mounting section 411 and an abutment section 412, the mounting section 411 and the abutment section 412 are connected, the mounting section 411 is sleeved on the mounting column 32, the abutment section 412 is suitable for abutting against the inner wall of the vehicle exhaust pipe 100, and an angle is formed between the abutment section 412 and the mounting section 411 so that the abutment section 412 is bent in a direction away from the other expansion clamp arm 41.
[0035] The expansion clamp arm 41 may include a mounting section 411 and an abutting section 412, the mounting section 411 is connected to the abutting section 412, the mounting section 411 may be connected to the abutting section 412 by welding, the mounting section 411 may also be integrally formed with the abutting section 412, the mounting section 411 may be formed with an assembly hole, the mounting column 32 is penetrated through the assembly hole, so that the mounting section 411 is sleeved on the mounting column 32, so that at least part of the expansion clamp 40 is arranged in the connecting channel 31, so that the expansion clamp 40 is connected to the connecting piece 30, the abutting section 412 can extend into the vehicle exhaust pipe 100, and the abutting section 412 is suitable for abutting against the inner wall of the vehicle exhaust pipe 100. Abutment is used to realize the connection between the expansion clamp 40 and the vehicle exhaust pipe 100. An angle is formed between the abutment section 412 and the installation section 411, so that the abutment section 412 of one of the expansion clamp arms 41 is bent in the direction away from the other expansion clamp arm 41, and at least part of the abutment section 412 abuts against the inner wall of the vehicle exhaust pipe 100, thereby reducing the contact area between the expansion clamp arm 41 and the inner wall of the vehicle exhaust pipe 100, increasing the pressure between the expansion clamp arm 41 and the vehicle exhaust pipe 100, making the expansion clamp arm 41 abut more firmly, reducing the probability of the expansion clamp 40 falling off from the vehicle exhaust pipe 100, and improving the safety of the exhaust emission connection device 1.
[0036] In some embodiments of the present invention, the mounting section 411 is perpendicular to the mounting column 32 .
[0037] The mounting section 411 is sleeved on the mounting column 32, and a first elastic member 42 is provided between the two expansion clamp arms 41. The first elastic member 42 generates elastic force after being compressed, and generates a reaction force on the mounting section 411. The mounting section 411 is perpendicular to the mounting column 32, so that the reaction force of the first elastic member 42 on the mounting section 411 acts on the mounting section 411 along the axial direction of the mounting column 32, thereby reducing the risk of the first elastic member 42 generating force in other directions, reducing energy loss, and making it easier to extend the expansion clamp 40 into the vehicle exhaust pipe 100, thereby improving work efficiency.
[0038] In some embodiments of the utility model, the connecting piece 30 is configured as an annular structure. The cross-sectional area of the connecting piece 30 can be circular, and the cross-sectional area of the connecting channel 31 gradually increases from the first open end 311 to the second open end 312. At least part of the expansion clamp 40 is arranged in the connecting channel 31, and the expansion clamp 40 is arranged in the second open end 312. The cross-sectional area of the second open end 312 is large, which increases the adjustable range of the opening of the expansion clamp 40. The expansion clamp 40 can be connected to vehicle exhaust pipes 100 of different shapes and sizes. The expansion clamp 40 extends from the second open end 312 of the connecting channel 31. The connecting piece 30 is connected to vehicle exhaust pipes 100 of different shapes and sizes. The second open end 312 can accommodate vehicle exhaust pipes 100 of different shapes and sizes. When the vehicle exhaust pipe 100 inputs automobile exhaust gas into the connecting channel 31, a blocking device can be arranged outside the connection between the second open end 312 and the vehicle exhaust pipe 100 to prevent the automobile exhaust gas from leaking from the second open end 312 and polluting the external environment.
[0039] In some embodiments of the present invention, the exhaust gas connection device 1 may further include: a connection pipe 50 connected between the exhaust gas pipeline 10 and the first open end 311 to connect the exhaust gas pipeline 10 and the connecting channel 31 .
[0040] The exhaust gas emission connecting device 1 may also include a connecting pipe 50, which may be made of rubber, metal or the like. The connecting pipe 50 is connected between the exhaust gas emission pipeline 10 and the first open end 311. The connecting pipe 50 connects the exhaust gas emission pipeline 10 and the connecting channel 31, so that the exhaust gas of the automobile can enter the exhaust gas emission pipeline 10 from the connecting channel 31, and the exhaust gas of the automobile is discharged from the vehicle exhaust pipe 100, passes through the connecting channel 31 and the connecting pipe 50, enters the exhaust gas emission pipeline 10, and is discharged from the exhaust gas emission pipeline 10, thereby realizing the emission of the exhaust gas of the automobile.
[0041] In some embodiments of the present invention, the connecting pipe 50 is configured as a hose.
[0042] The connecting pipe 50 can be constructed as a hose. The connecting pipe 50 can be made of a plastic hose, a rubber hose, etc. The connecting pipe 50 is constructed as a hose so that the setting height of the exhaust gas emission pipeline 10 can be different from the setting height of the connecting channel 31. The connection between the exhaust gas emission connecting device 1 and the vehicle exhaust pipe 100 of different heights can be achieved by adjusting the curvature of the connecting pipe 50. The connecting pipe 50 is constructed as a hose and also has a shock-absorbing effect. Multiple fastening collars can also be provided at both ends of the hose to improve the airtightness of the exhaust gas emission connecting device 1.
[0043] In some embodiments of the utility model, the fixing seat 20 may include: a base 21, a shock-absorbing pad 22 and a clamping assembly 23, the shock-absorbing pad 22 is fixed to the base 21, the clamping assembly 23 is arranged on the shock-absorbing pad 22, and the clamping assembly 23 is used to clamp the exhaust gas emission pipeline 10.
[0044] The fixing seat 20 may include a base 21, a shock absorbing pad 22 and a clamping assembly 23. The base 21, the shock absorbing pad 22 and the clamping assembly 23 are stacked. The shock absorbing pad 22 is fixed to the base 21. The shock absorbing pad 22 may be fixed to the base 21 by bonding, bolting, etc. The base 21 is used to support the shock absorbing pad 22, the clamping assembly 23 and the exhaust gas exhaust pipe 10. The shock absorbing pad 22 is used to reduce the vibration effect of the exhaust pipe, improve the stability of the exhaust gas exhaust connection device 1, and better achieve the fixed connection effect between the exhaust gas exhaust connection device 1 and the vehicle exhaust pipe 100. The clamping assembly 23 is arranged on the shock absorbing pad 22. The clamping assembly 23 may be connected to the shock absorbing pad 22 by bolts. The clamping assembly 23 is used to clamp the exhaust gas exhaust pipe 10. The exhaust gas exhaust pipe 10 is fixed to the fixing seat 20 by the clamping assembly 23, so as to improve the stability of the exhaust gas exhaust connection device 1.
[0045] In some embodiments of the utility model, the clamping assembly 23 may include: a first clamping arm 231, a second clamping arm 232 and a second elastic member 233, one end of the first clamping arm 231 and one end of the second clamping arm 232 are hinged, and the second elastic member 233 is connected between the first clamping arm 231 and the second clamping arm 232 so that the first clamping arm 231 and the second clamping arm 232 clamp the exhaust exhaust pipe 10.
[0046] The clamping assembly 23 may include a first clamping arm 231, a second clamping arm 232 and a second elastic member 233. One end of the first clamping arm 231 and one end of the second clamping arm 232 are hinged. The first clamping arm 231 and the second clamping arm 232 can move relative to each other. The exhaust gas exhaust pipe 10 can be fixed between the first clamping arm 231 and the second clamping arm 232. The second elastic member 233 is connected between the first clamping arm 231 and the second clamping arm 232 so that the first clamping arm 231 and the second clamping arm 232 clamp the exhaust gas exhaust pipe 10.
[0047] When the exhaust gas emission pipe 10 is not arranged on the clamping assembly 23, the second elastic member 233 is in a natural state, and the opening of the clamping assembly 23 is closed under the action of the second elastic member 233. When the clamping assembly 23 clamps the exhaust gas emission pipe 10, the other end of the first clamping arm 231 and the other end of the second clamping arm 232 depart from each other to increase the opening of the clamping assembly 23, and the second elastic member 233 is stretched, and the second elastic member 233 generates elastic force, and the second elastic member 233 stores energy. The exhaust gas emission pipe 10 is placed between the first clamping arm 231 and the second clamping arm 232, and the first clamping arm 231 and the second clamping arm 232 clamp the exhaust gas emission pipe 10 by the elastic force of the second elastic member 233.
[0048] When it is necessary to remove the exhaust gas exhaust pipe 10 from the clamping assembly 23, the first clamping arm 231 and the second clamping arm 232 are rotated to move the first clamping arm 231 and the second clamping arm 232 away from each other, so that the exhaust gas exhaust pipe 10 can be removed. The second elastic member 233 can adjust the opening size of the clamping assembly 23, so as to achieve the fixing and removal of the exhaust gas exhaust pipe 10 by the clamping assembly 23.
[0049] In some embodiments of the utility model, the shock-absorbing pad 22 includes a plurality of shock-absorbing pad layers 221, which are stacked in sequence to reduce the vibration effect of the exhaust pipe. By adjusting the number of layers of the shock-absorbing pad layers 221, the height of the fixing seat 20 can be adjusted, thereby adjusting the height of the exhaust gas emission pipeline 10, so that the exhaust gas emission connecting device 1 can be adapted to the exhaust pipes 100 of vehicles of different models, thereby enhancing the practicality of the exhaust gas emission connecting device 1.
[0050] In some embodiments of the utility model, a roller 24 is provided on the side of the base 21 away from the shock-absorbing pad 22. There are multiple rollers 24, and the rollers 24 are arranged circumferentially along the horizontal plane of the side of the base 21 away from the shock-absorbing pad 22. In the embodiment of the present application, there can be 4 rollers 24, which are evenly arranged circumferentially along the horizontal plane of the side of the base 21 away from the shock-absorbing pad 22, so that the exhaust gas emission connection device 1 can be placed stably, thereby improving the stability of the exhaust gas emission connection device 1. The rollers 24 can make the exhaust gas emission connection device 1 move, and the rollers 24 can be constructed as universal wheels, so as to realize the movement of the exhaust gas emission connection device 1 in different directions, and realize that the exhaust gas emission connection device 1 can be placed in different directions or angles, so that the exhaust gas emission connection device 1 can be connected to the vehicle exhaust pipe 100 with different setting directions, thereby improving the installation efficiency of the exhaust gas emission connection device 1 and the vehicle exhaust pipe 100, and improving the versatility of the exhaust gas emission connection device 1.
[0051] Other structures and operations of the exhaust gas emission connection device 1 according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An exhaust gas connection device (1), characterized in that: include: An exhaust gas emission pipeline (10) and a fixing seat (20), wherein the fixing seat (20) is used to fix the exhaust gas emission pipeline (10); a connecting piece (30), the connecting piece (30) defining a connecting passage (31) penetrating the connecting piece (30), the connecting passage (31) having a first open end (311) and a second open end (312) opposite to each other, the first open end (311) being connected to the exhaust gas discharge pipeline (10) so that the exhaust gas discharge pipeline (10) and the connecting passage (31) are connected, and a cross-sectional area of the connecting passage (31) gradually increases from the first open end (311) to the second open end (312); An expansion clamp (40), at least a portion of which is disposed in the communication channel (31), and the expansion clamp (40) is suitable for extending into a vehicle exhaust pipe and abutting against an inner wall of the vehicle exhaust pipe.
2. The exhaust gas connection device (1) according to claim 1, characterized in that: The expansion pliers (40) include: two expansion pliers arms (41) and a first elastic member (42); a mounting column (32) is fixedly arranged in the communication channel (31); the two expansion pliers arms (41) are both sleeved on the mounting column (32) and arranged along the axial direction of the mounting column (32); the two expansion pliers arms (41) are both movable along the mounting column (32); the first elastic member (42) is compressed between the two expansion pliers arms (41); and the expansion pliers arms (41) are suitable for extending into a vehicle exhaust pipe and abutting against an inner wall of the vehicle exhaust pipe.
3. The exhaust gas connection device (1) according to claim 2, characterized in that: The expansion clamp arm (41) comprises: a mounting section (411) and an abutting section (412); the mounting section (411) and the abutting section (412) are connected; the mounting section (411) is sleeved on the mounting column (32); the abutting section (412) is suitable for abutting against the inner wall of the vehicle exhaust pipe; an angle is formed between the abutting section (412) and the mounting section (411) so that the abutting section (412) is bent in a direction away from the other expansion clamp arm (41).
4. The exhaust gas connection device (1) according to claim 3, characterized in that: The mounting section (411) is perpendicular to the mounting column (32).
5. The exhaust gas connection device (1) according to claim 1, characterized in that: The connecting piece (30) is configured as an annular structure.
6. The exhaust gas connection device (1) according to claim 1, characterized in that: Also includes: A connecting pipe (50) is connected between the exhaust gas emission pipeline (10) and the first open end (311) to connect the exhaust gas emission pipeline (10) and the communication channel (31).
7. The exhaust gas connection device (1) according to claim 6, characterized in that: The connecting pipe (50) is configured as a hose.
8. The exhaust gas connection device (1) according to any one of claims 1 to 7, characterized in that: The fixing seat (20) comprises: a base (21), a shock absorbing pad (22) and a clamping assembly (23); the shock absorbing pad (22) is fixed to the base (21); the clamping assembly (23) is arranged on the shock absorbing pad (22); and the clamping assembly (23) is used to clamp the exhaust gas emission pipeline (10).
9. The exhaust gas connection device (1) according to claim 8, characterized in that: The clamping assembly (23) comprises: a first clamping arm (231), a second clamping arm (232) and a second elastic member (233); one end of the first clamping arm (231) and one end of the second clamping arm (232) are hinged; the second elastic member (233) is connected between the first clamping arm (231) and the second clamping arm (232) so that the first clamping arm (231) and the second clamping arm (232) clamp the exhaust gas exhaust pipe (10).
10. The exhaust gas connection device (1) according to claim 8, characterized in that: The shock-absorbing pad (22) comprises a plurality of shock-absorbing pad layers (221), wherein the plurality of shock-absorbing pad layers (221) are stacked in sequence.