Automobile exhaust pipe

Abstract

The utility model relates to the technical field of exhaust pipes, in particular to an automobile exhaust pipe which comprises a front end pipe, a silencer, an insertion rod, a locking and limiting assembly and an unlocking mechanism. The two ends of the front end pipe are connected with the mounting part and the inserting part respectively, and a plurality of through holes are formed in the inserting part around the axis of a center channel of the inserting part in an annular array mode. The silencer is communicated with the tail gas pipe and the particle catcher, and the input end of the particle catcher is communicated with the front end pipe through the inserting part. The inserting rods are arranged on the particle catcher and distributed in an annular array mode around the axis of the particle catcher channel, and the inserting rods are inserted into the through holes in the corresponding sides respectively and connected with the inner walls of the through holes in a sliding mode. The locking and limiting assembly is connected with the inserting rod, and the locking and limiting assembly limits relative sliding of the inserting rod and the inserting part in the working state. And the unlocking mechanism is used for unlocking the locking state of the locking assembly on the inserting rod and the inserting part in a working state. According to the utility model, the particle catcher and the whole silencer can be quickly disassembled and assembled, and carbon deposition in the device can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust pipes, in particular to an automobile exhaust pipe. Background Art

[0002] The exhaust pipe of a car is part of the engine's exhaust system, which primarily includes the exhaust manifold, exhaust pipe, and muffler. A three-way catalytic converter, typically used to control engine pollutant emissions, is also installed in the exhaust system. The exhaust pipe generally includes a front exhaust pipe and a rear exhaust pipe. When a large amount of carbon deposits accumulate on the surface of the particulate filter, its catalytic effect is greatly reduced, leading to a significant increase in vehicle fuel consumption. At this point, the carbon deposits inside the particulate filter need to be cleaned. Existing exhaust pipes have a fixed structure, and because the particulate filter is located within the exhaust pipe, the entire exhaust pipe must be removed for cleaning. Furthermore, cleaning the carbon deposits from the particulate filter after removal is still time-consuming and labor-intensive, necessitating improvements to existing exhaust pipes.

[0003] The technical solution disclosed in the Chinese patent with authorization announcement number CN221169716U is to set a conductive electromagnet in the spring slot and a magnet with opposite magnetic properties in the connecting slot. When the power is connected, the two are magnetically connected. When the positive and negative poles of the conductive electromagnet are reversed, the magnetic properties of the conductive electromagnet and the magnet are the same, and the automobile exhaust pipe and the connecting air pipe are disconnected, which is convenient for disassembly and improves the convenience of cleaning the inside of the automobile exhaust pipe.

[0004] However, this device still has shortcomings: the magnetism of the electromagnet is greatly affected by temperature, and when a car is driving for a long time, the temperature of the exhaust pipe is very high. High temperature can easily cause the magnetism of the electromagnet to decay or even disappear, which can easily cause the connecting air pipe to fall off during the bumpy ride of the vehicle. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes an automobile exhaust pipe.

[0006] The technical solution of the utility model is: an automobile exhaust pipe, comprising a front end pipe, wherein both ends of the front end pipe are respectively connected to a mounting portion and an inserting portion, and the inserting portion is provided with a plurality of through holes in a ring array around the axis of its central channel.

[0007] The muffler has an output end connected to the tailpipe, an input end of the muffler is connected to an output end of the particle trap, and the input end of the particle trap is connected to the output end of the front end pipe through an inserting portion.

[0008] The insertion rods are arranged on the particle catcher and distributed in a ring array around the axis of the particle catcher channel. Each insertion rod is inserted into the through hole on the corresponding side and is slidably connected to the inner wall thereof.

[0009] The locking and limiting component is connected to the insertion rod, and the locking and limiting component limits the relative sliding of the insertion rod and the insertion part in the working state.

[0010] And an unlocking mechanism, which is connected to the front end tube and releases the locking state of the locking assembly on the insertion rod and the insertion part in the working state.

[0011] Preferably, a plurality of side holes A are provided on the arc surface of the insertion portion, and each side hole A is communicated with a through hole on the corresponding side.

[0012] Preferably, the locking limit assembly includes a slider and a wedge-shaped block. A cylindrical cavity is provided in the insertion rod, and a socket connected to the interior of the cylindrical cavity is provided at the end of the insertion rod away from the particle catcher, and a side hole B connected to the interior of the cylindrical cavity is provided on the insertion rod, and each side hole B corresponds to and is connected to the side hole A on the corresponding side. The slider is provided in the cylindrical cavity and is slidably connected to its inner wall, and a spring is provided in the cylindrical cavity to push the slider toward the socket. A spring rod is provided in the slider, and the wedge-shaped block is connected to the spring rod. The wedge-shaped block passes through the side hole B and side hole A on the corresponding side, respectively, and the oblique edge of the wedge-shaped block abuts against the inner wall edge of the side hole A.

[0013] Preferably, the unlocking mechanism includes a slip ring and a propulsion assembly. The slip ring is sleeved on the front end tube and is slidably connected thereto, and the slip ring is located between the mounting portion and the insertion portion. A plurality of push rods are arranged in a circular array around the axis of the slip ring at one end close to the particle catcher. Each push rod passes through the through hole and the socket on the corresponding side and abuts against the slider in the cylindrical cavity on the corresponding side. The propulsion assembly is connected to the front end tube and drives the slip ring away from or close to the insertion portion.

[0014] Preferably, the propulsion assembly includes an internally threaded tube, a thread groove is provided on the outer arc surface of the front end tube, the internally threaded tube is sleeved on the front end tube and spirally connected thereto, and the internally threaded tube is rotatably connected to the slip ring.

[0015] Preferably, a limit block is provided on the inner wall of the slip ring, a limit groove is provided on the front end tube along its radial direction, and the limit block is inserted into the limit groove and slidably connected with the inner wall thereof.

[0016] Preferably, a locking knob is provided on the slip ring and is spirally connected thereto, and the screw end of the locking knob abuts against the outer wall of the front end tube.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] By setting an insertion part, setting a through hole on the insertion part, setting an insertion rod on the particle catcher, and inserting the insertion rod into the through hole, the rear half of the exhaust pipe is supported; by setting a locking assembly, setting a slip ring, and setting a push rod on the slip ring, the locking assembly composed of a wedge-shaped block and a slider and other structures, when the insertion rod is inserted into the through hole, the slider is squeezed by the push rod so that the wedge-shaped block remains stuck in the side hole A, thereby achieving an anti-slip effect on the rear half of the exhaust pipe, and when the slip ring is driven away from the particle catcher by rotating the internal threaded tube, the slider is not squeezed by the push rod under the tension of the spring and slides in the direction away from the particle catcher, so that the wedge-shaped block automatically retracts when its inclined surface contacts the edge of the side hole A. At this time, the rear half of the exhaust pipe can be directly removed from the front end pipe. The operation is very simple and the connection stability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0020] Figure 2 Schematic diagram of the connection structure between the muffler, the exhaust pipe and the particulate filter;

[0021] Figure 3 Schematic diagram of the internal structure of the plug rod;

[0022] Figure 4 Schematic diagram of the connection structure of various components on the front end pipe;

[0023] Figure 5 It is a schematic diagram of the separate structure of the insertion part and the wreath.

[0024] Figure numerals: 1, front end tube; 101, thread groove; 102, limit groove; 2, mounting portion; 3, insertion portion; 31, through hole; 32, side hole A; 4, muffler; 5, exhaust pipe; 6, particle catcher; 7, insertion rod; 71, cylindrical cavity; 72, insertion hole; 73, side hole B; 8, spring; 9, slider; 10, spring rod; 11, wedge-shaped block; 12, slip ring; 121, limit block; 122, limit ring; 13, push rod; 14, locking knob; 15, internal threaded tube. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1-Figure 5As shown, the present invention proposes an automobile exhaust pipe, comprising a front end pipe 1, a muffler 4, an insert rod 7, a locking and limiting assembly, and an unlocking mechanism. The two ends of the front end pipe 1 are respectively connected to the mounting portion 2 and the inserting portion 3. The inserting portion 3 is provided with a plurality of through holes 31 in a circular array around the axis of its central channel. A plurality of side holes A32 are provided on the arc surface of the inserting portion 3, and each side hole A32 is connected to the through hole 31 on the corresponding side. The output end of the muffler 4 is connected to the exhaust pipe 5, and the input end of the muffler 4 is connected to the output end of the particulate trap 6. The input end of the particulate trap 6 is connected to the output end of the front end pipe 1 through the inserting portion 3. The insert rods 7 are provided on the particulate trap 6 and are distributed in a circular array around the axis of the particulate trap 6 channel. Each insert rod 7 is inserted into the through hole 31 on the corresponding side and is slidably connected to its inner wall. The locking and limiting assembly comprises a slider 9 and a wedge-shaped block 11. A cylindrical cavity 71 is provided within the insertion rod 7. A socket 72 communicating with the interior of the cylindrical cavity 71 is provided at the end of the insertion rod 7 away from the particle trap 6. Side holes B73 communicating with the interior of the cylindrical cavity 71 are also provided on the insertion rod 7. Each side hole B73 corresponds to and communicates with the side hole A32 on the corresponding side. A slider 9 is provided within the cylindrical cavity 71 and slidably connected to its inner wall. A spring 8 is provided within the cylindrical cavity 71 to push the slider 9 toward the socket 72. A spring rod 10 is provided within the slider 9. A wedge-shaped block 11 is connected to the spring rod 10. The wedge-shaped block 11 passes through the corresponding side holes B73 and A32, respectively. The oblique edge of the wedge-shaped block 11 abuts against the inner wall edge of the side hole A32. The locking and limiting assembly restricts relative sliding between the insertion rod 7 and the insertion portion 3 in the operating state. The unlocking mechanism includes a slip ring 12 and a propulsion assembly. The slip ring 12 is sleeved on the front end tube 1 and slidably connected thereto, and the slip ring 12 is located between the mounting portion 2 and the insertion portion 3. A plurality of push rods 13 are arranged in a circular array around the axis of the slip ring 12 at one end close to the particle catcher 6. Each push rod 13 passes through the through hole 31 and the insertion hole 72 on the corresponding side and abuts against the slider 9 in the cylindrical cavity 71 on the corresponding side. The propulsion assembly includes an internal threaded tube 15. A thread groove 101 is provided on the outer arc surface of the front end tube 1. The internal threaded tube 15 is sleeved on the front end tube 1 and spirally connected thereto. A limiting ring 122 is provided on the slip ring 12. The limiting ring 122 is inserted into the internal threaded tube 15 and is rotatably connected thereto. In the working state, the unlocking mechanism releases the locking state of the locking assembly on the insertion rod 7 and the insertion portion 3.

[0027] In this embodiment, when disassembling, first rotate the internal threaded tube 15, and the internal threaded tube 15 drives the slip ring 12 away from the particle catcher 6. At this time, the slider 9 is pressed by the tension of the spring 8 to catch the particle catcher 6. At the same time, the inclined surface of the wedge-shaped block 11 gradually retracts and disengages from the side hole A32 under the resistance of the edge of the side hole A32, and the rear half of the exhaust pipe consisting of the muffler 4, the tail pipe 5 and the particle catcher 6 can be directly removed as a whole. At this time, the staff can clean the carbon deposits on the particle catcher. After cleaning, first rotate the internal threaded tube 15, and use the internal threaded tube 15 to drive the slip ring 12 to slide and reset toward the direction of the insertion part 3, and then align the insertion rod 7 with the through hole 31 and insert it. At this time, the slider 9 is squeezed by the push rod 13 to keep it in a fixed position, and the wedge-shaped block 11 automatically pops out from the side hole A32 when the insertion rod 7 is inserted into place, thereby preventing the rear half of the exhaust pipe from falling off.

[0028] Example 2

[0029] like Figure 4 and Figure 5 As shown, the automobile exhaust pipe proposed by the present invention, compared with the first embodiment, is provided with a limit block 121 on the inner wall of the slip ring 12, and a limit groove 102 is provided on the front end pipe 1 along its radial direction. The limit block 121 is inserted into the limit groove 102 and is slidably connected to its inner wall.

[0030] In this embodiment, the structure of the limit block 121 and the limit groove 102 is used to limit the sliding path of the slip ring 12 so that it can only slide back and forth along a fixed direction without rotating, thereby ensuring that the push rod 13 is always aligned with the through hole 31.

[0031] Example 3

[0032] like Figure 4 and Figure 5 As shown, the automobile exhaust pipe proposed by the present invention is different from the first embodiment. A locking knob 14 spirally connected to the slip ring 12 is provided, and the screw end of the locking knob 14 abuts against the outer wall of the front end pipe 1.

[0033] In this embodiment, after the slip ring 12 slides into place, the locking knob 14 is rotated to make the end of the screw further press against the outer wall of the front end tube 1, thereby increasing the friction between the two and preventing the internal threaded tube 15 from rotating when the vehicle vibrates and bumps.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An automobile exhaust pipe, characterized in that: include A front end tube (1), wherein both ends of the front end tube (1) are respectively connected to the mounting portion (2) and the insertion portion (3), and the insertion portion (3) is provided with a plurality of through holes (31) in a circular array around the axis of the central channel thereof; A muffler (4), the output end of the muffler (4) is connected to the tailpipe (5), the input end of the muffler (4) is connected to the output end of the particle trap (6), and the input end of the particle trap (6) is connected to the output end of the front end pipe (1) through the inserting portion (3); Insert rods (7), which are arranged on the particle catcher (6) and are distributed in a ring array around the axis of the particle catcher (6) channel, and each insert rod (7) is inserted into the through hole (31) on the corresponding side and is slidably connected to the inner wall thereof; A locking and limiting assembly, the locking and limiting assembly being connected to the insertion rod (7), and limiting relative sliding between the insertion rod (7) and the insertion portion (3) in a working state; And an unlocking mechanism, which is connected to the front end tube (1) and releases the locking state of the locking assembly on the insertion rod (7) and the insertion part (3) in the working state.

2. The automobile exhaust pipe according to claim 1, characterized in that: A plurality of side holes A (32) are provided on the arc surface of the insertion portion (3), and each side hole A (32) is communicated with the through hole (31) on the corresponding side.

3. The automobile exhaust pipe according to claim 2, characterized in that: The locking and limiting assembly comprises a slider (9) and a wedge-shaped block (11); a columnar cavity (71) is provided in the insertion rod (7); a socket (72) communicating with the interior of the columnar cavity (71) is provided at one end of the insertion rod (7) away from the particle catcher (6); and a side hole B (73) communicating with the interior of the columnar cavity (71) is provided on the insertion rod (7); each side hole B (73) corresponds to and is communicated with a side hole A (32) on the corresponding side; the slider (9) is provided on the column The cylindrical cavity (71) is slidably connected to the inner wall thereof, and a spring (8) is provided in the cylindrical cavity (71) to push the slider (9) toward the insertion hole (72); a spring rod (10) is provided in the slider (9), and a wedge-shaped clamping block (11) is connected to the spring rod (10), and the wedge-shaped clamping block (11) passes through the side hole B (73) and the side hole A (32) on the corresponding side, respectively, and the oblique side of the wedge-shaped clamping block (11) abuts against the inner wall edge of the side hole A (32).

4. The automobile exhaust pipe according to claim 3, characterized in that: The unlocking mechanism comprises a slip ring (12) and a propulsion assembly. The slip ring (12) is sleeved on the front end tube (1) and is slidably connected thereto. The slip ring (12) is located between the mounting portion (2) and the insertion portion (3). A plurality of push rods (13) are arranged in a circular array around the axis of the slip ring (12) at one end close to the particle catcher (6). Each push rod (13) passes through the through hole (31) and the insertion hole (72) on the corresponding side and abuts against the slider (9) in the cylindrical cavity (71) on the corresponding side. The propulsion assembly is connected to the front end tube (1) and drives the slip ring (12) away from or close to the insertion portion (3).

5. The automobile exhaust pipe according to claim 4, characterized in that: The propulsion assembly includes an internal threaded tube (15); a thread groove (101) is provided on the outer arc surface of the front end tube (1); the internal threaded tube (15) is sleeved on the front end tube (1) and spirally connected thereto, and the internal threaded tube (15) is rotationally connected to the slip ring (12).

6. The automobile exhaust pipe according to claim 4, characterized in that: A limiting block (121) is provided on the inner wall of the slip ring (12), a limiting groove (102) is provided on the front end tube (1) along its radial direction, and the limiting block (121) is inserted into the limiting groove (102) and is slidably connected with the inner wall thereof.

7. The automobile exhaust pipe according to claim 6, characterized in that: A locking knob (14) is provided on the slip ring (12) and is spirally connected thereto, and the screw end of the locking knob (14) abuts against the outer wall of the front end tube (1).

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