Engine thermal baffle installation nut and automobile

A heat shield and engine technology, which is applied to nuts, pipes protected by heat insulation, thin plate connections, etc., can solve the problems of affecting assembly stability, nut features, relatively high installation environment requirements, and abnormal noise of heat shields, etc., to achieve installation Robust, adaptable, and reliability-enhancing effect

Inactive Publication Date: 2019-07-05
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] see figure 1 , the height difference between the hex nut head 9 and the compression block 10 shown in the existing heat shield mounting nut is very small, resulting in a relatively high requirement for the nut feature on the installation environment, that is, when the stud is welded on the car body, it should be avoided as much as possible. The root of the stud produces welding slag. If there is welding slag at the root of the stud during welding, the mounting nut of the existing heat shield will be jacked up, causing a gap between the heat shield and the conical compression block, which will affect the assembly stability.
In addition, the area of ​​the conical pressing block is small, which is effective for the covering area of ​​the heat shield, so that there is a risk of abnormal noise in the heat shield

Method used

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  • Engine thermal baffle installation nut and automobile
  • Engine thermal baffle installation nut and automobile
  • Engine thermal baffle installation nut and automobile

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Experimental program
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Effect test

Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] see figure 1 and figure 2 , the mounting nut for the engine heat shield shown is formed by integral stamping of steel, including a cylindrical nut body 1 with threads on the inner wall, a boss 2 at one end of the nut body 1, and a boss 2 on the boss 2 For the clamping surface of the tightening tool, a transition section 3 whose radial dimension gradually increases is provided at the free end of the boss 2, and an avoidance chamber 31 is provided in the transition section 3, and a transition section 3 is provided at the free end of the transition section 3. There is a pressing plate 4 extending outward.

[0017] The outer peripheral surface of the boss 2 is provided with six action surfaces, and arc surfaces are respectively arranged at both ends of every two action surfaces in the circumferential direction of the boss 2 . According to the layout space or i...

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PUM

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Abstract

The invention discloses an engine thermal baffle installation nut and an automobile. The engine thermal baffle installation nut comprises a cylindrical nut main body of which the inner wall is provided with a thread, one end of the nut main body is provided with a boss, and the boss is provided with an acting surface for being clamped by a tightening tool; and the free end of the boss is providedwith a transition section of which the radial size is gradually increased, an avoiding cavity is formed in the transition section, and the free end of the transition section is provided with a pressing plate extending outwards. The engine thermal baffle installation nut is simple in structure, and high in reliability and adaptability.

Description

technical field [0001] The invention relates to a nut, in particular to an engine heat shield mounting nut and an automobile. Background technique [0002] The temperature of the exhaust gas discharged from the engine is very high, which will cause some adverse effects on other parts of the car body. For example, there have been incidents in the market where the exhaust pipe exhaust gas scorched the spare tire basin. In order to reduce the impact of high-temperature exhaust gas to negligible, the heat shield is usually used to separate the exhaust pipe and the parts of the car that are not resistant to high temperature, so the body heat shield is generally arranged on both sides of the engine and between the exhaust pipe and the floor at the bottom of the body . The heat shield is generally made of aluminum, and the thickness is very thin. Studs are welded on the car body, and the heat shield is fixed on the car body by nuts. [0003] see figure 1 , the height difference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/00F16B5/02F16L59/12B60R13/08
CPCB60R13/0838F16B5/02F16B37/00F16L59/123
Inventor 李政张治徐艳斌
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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