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Plug-in adjustable exhaust pipe connecting structure and assembly method

A connection structure and adjustable technology, which is applied in the direction of exhaust devices, mufflers, engine components, etc., can solve problems such as easy wear, unguaranteed coaxiality, inconsistent installation status, etc., so as to improve service life and ensure The effect of assembly accuracy and airtightness assurance

Pending Publication Date: 2019-03-26
常州良旭车辆配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above connection method cannot adjust the radial error of the pipes, resulting in inconsistent installation status of the two pipes (the coaxiality cannot be guaranteed), so other components, such as metal hoses and bellows, can only be used to compensate for the radial error. error; and the thickness of the asbestos pad is very thin due to the need for airtightness, and it is easy to wear and tear. Once damaged, it will affect the airtightness of the exhaust system

Method used

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  • Plug-in adjustable exhaust pipe connecting structure and assembly method
  • Plug-in adjustable exhaust pipe connecting structure and assembly method
  • Plug-in adjustable exhaust pipe connecting structure and assembly method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 as Figure 2 to Figure 6 As shown, the plug-in adjustable exhaust pipe connection structure of this embodiment includes: the first pipe 10, the second pipe 20, the annular asbestos pad 3 and the clamp 4, and the two joints of the clamp 4 are provided with connecting ears 41 The connecting ear 41 is provided with a screw hole suitable for the passage of the stop pin 42, and the outer wall of the connecting part of the first pipe 10 is provided with an integrally formed 7-shaped protrusion 12 along the circumference, and the 7-shaped protrusion 12 includes an inclined side wall 122 and Annular side wall 121, the annular side wall 121 is arranged coaxially with the first pipe 10, the inner side end of the annular side wall 121 is fixedly connected with the outer wall of the first pipe 10 through the inclined side wall 122, and the front end of the first pipe 10 protrudes from the ring The outer end of the side wall 121 is arranged to form a socket 13, and the len...

Embodiment 2

[0022] The assembly method of the plug-in adjustable exhaust pipe connection structure described in Embodiment 1 includes the following steps:

[0023] A. Set the ring-shaped asbestos pad 3 with trapezoidal cross-section in the cavity 14 of the 7-shaped protrusion 12 at the front end of the first pipe 10 .

[0024] B. Insert the insertion part 13 at the front end of the first pipeline 10 into the second pipeline 20, the insertion part 10 is placed in the tight side 22 and the front end of the insertion part 13 is blocked and limited by the transition side 23 to avoid over-insertion more; at this time, the top of the trumpet-shaped flange 21 of the second pipeline 20 is in contact with the outer end of the 7-shaped raised annular side wall 121, so as to close the cavity 14 and limit the asbestos pad 3 in the cavity 14 At the same time, the outer flange 21 squeezes the inclined side wall 122 of the asbestos pad 3 to form a seal and reduce leakage at the joint.

[0025] C. Put t...

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Abstract

The invention relates to a plug-in adjustable exhaust pipe connecting structure and an assembly method. The plug-in adjustable exhaust pipe connecting structure comprises a first pipeline, a second pipeline, an annular asbestos pad and a clamp hoop, an integrally-formed 7-shaped bulge is arranged on the outer wall of a connecting part of the first pipeline in the circumferential direction and comprises an inclined side wall and an annular side wall, the front end of the first pipeline extends out of the outer side end of the annular side wall to form an inserted-connection part, a cavity is formed between the annular side wall and the outer wall of the first pipeline, and the asbestos pad is connected into the cavity in a sleeved mode. The thickness of the asbestos pad is effectively increased, the using life of the asbestos pad is prolonged, and thus the air tightness of an exhaust pipe is ensured during the life of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a plug-in adjustable exhaust pipe connection structure and an assembly method thereof. Background technique [0002] There is a connection structure for automobile exhaust pipes, patent number: 2011200537371, title: the prior art of "connection structure for automobile exhaust pipes", see figure 1 Its structure is: the outer peripheral wall of the first pipe 10 is provided with an annular protrusion 11 protruding from the outer wall of the first pipe, and the mouth of the second pipe 20 is provided with an annular protrusion 11 to form a sealing fit. After the end of the first pipe 10 is inserted into the second pipe, the annular protrusion of the first pipe 10 is in close contact with the outer flange. The above connection method cannot adjust the radial error of the pipes, resulting in inconsistent installation status of the two pipes (the coaxiality cannot be guaranteed), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/08F01N13/18
CPCF01N13/08F01N13/1811F01N13/1827
Inventor 潘金良
Owner 常州良旭车辆配件有限公司
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