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Mounting structure for sound shielding cover

A sound-proof cover and sound-proof technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve problems such as vibration reduction performance deterioration, and achieve the effect of preventing performance deterioration and vibration reduction.

Active Publication Date: 2013-10-30
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the spring constant of the spring is reduced, the sound insulating cover may come into contact with the noise generation source due to the dead weight of the sound insulating cover or the increase in the movable range of the spring, and the vibration reduction performance may be greatly deteriorated.

Method used

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  • Mounting structure for sound shielding cover
  • Mounting structure for sound shielding cover
  • Mounting structure for sound shielding cover

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0037] (The structure of the installation structure of the sound insulation cover)

[0038] The installation structure (installation structure) of the sound insulation cover according to the first embodiment of the present invention is as follows: figure 1 As shown, a sound shield 21 provided near the engine 11 which is a noise source that vibrates and generates noise is attached to the engine 11 via springs. It should be noted that the noise generation source is not limited to the engine 11, and may be an oil pan, an exhaust pipe, or the like. The sound shield 21 is attached to the engine 11 through the attachment structure 1 and covers a part of the engine 11 . It should be noted that the sound shielding cover 21 is not limited to cover a part of the noise generation source, and may cover the whole.

[0039] Installation configuration 1 such as figure 2 As shown, it has: a bolt (joint member) 2; a pair of springs 3, 3; and an abutment spring 4. The bolt 2 has a male thr...

no. 2 Embodiment approach

[0051] (The structure of the installation structure of the sound insulation cover)

[0052] Next, an attachment structure 201 according to a second embodiment of the present invention will be described. It should be noted that the same reference numerals are attached to the same components as those described above, and their descriptions will be omitted. The installation structure 201 of this embodiment differs from the installation structure 1 of the first embodiment in that, as Figure 5 As shown, the abutment spring 204 is formed by cutting a part of the sound shield 21 .

[0053] as top view Image 6 As shown, in the vicinity of the opening 21a of the sound insulating cover 21, a part of the sound insulating cover 21 is cut at intervals of 90° with the opening 21a as the center, and the cut parts are respectively bent into an L-shaped cross section. This forms four abutment springs 204 on the sound shield 21 . According to such a configuration, it is not necessary to s...

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Abstract

The invention provides a mounting structure for a sound shielding cover, which is capable of preventing a sound shielding cover from contacting with a noise source so as to prevent the degradation of the vibration property. An abutting spring (4) is arranged between a sound shielding cover (21) and the convex part (11a) of an engine (11). In this way, when the sound shielding cover (21) clamped by a pair of springs (3, 3) is moved towards the convex part (11a) of the engine (11), the abutting spring (4) abuts against the convex part (11a) of the engine (11).

Description

technical field [0001] The present invention relates to an attachment structure of a sound insulating cover provided near a noise generating source such as an engine or an exhaust pipe of an automobile, etc., to the noise generating source. Background technique [0002] When the engine is started in a car, etc., the engine body, oil pan, exhaust pipe, etc. vibrate and generate noise. In order to deal with noise, install a sound shield near the noise source. However, depending on how the sound shield is attached to the noise source, the sound shield may vibrate violently and become a source of noise. In addition, when the vibration of the sound insulation cover is very large, the sound insulation cover may be damaged due to fatigue. [0003] Therefore, in order to solve the above-mentioned problems, various methods of reducing vibration of the sound insulating cover by elastically supporting the sound insulating cover to reduce vibration transmission to the sound insulating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B77/13
Inventor 山口善三山极伊知郎
Owner KOBE STEEL LTD
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