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Vibration damping member

A technology of vibration damping plate and plate, which is applied in the direction of friction damper, spring/shock absorber, vibration suppression adjustment, etc. It can solve the problems that the vibration energy level cannot be reduced and the vibration attenuation effect is small, so as to suppress the generation of radiation sound Effect

Inactive Publication Date: 2008-04-30
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, although the resonance frequency can be lowered, the vibration energy level cannot be effectively lowered because the damping effect on the vibration is small.

Method used

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  • Vibration damping member
  • Vibration damping member
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Embodiment Construction

[0026] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0027] FIG. 1 is a front view of an engine to which a damper plate according to an embodiment is mounted, and FIG. 2 is a perspective view of the damper plate.

[0028]

[0029] The engine 1 shown in Fig. 1 is an in-line 4-cylinder diesel engine, and its casing is composed of a cylinder block 2, a cylinder head 3, an oil pan 4, a cylinder head cover 5, a camshaft drive chain cover 6 and the like. The camshaft drive chain cover 6 is an aluminum alloy die-cast product, and it is fastened to the front surfaces of the cylinder block 2 and the cylinder head 3 so as to cover a chain drive mechanism (camshaft drive chain or crankshaft toothed pulley) not shown in the figure. .

[0030] On the intake side of the engine 1 (the right side in FIG. 1 ), in addition to the intake device 11 , there are auxiliary devices such as a power steering pump 12 , an alternator ...

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Abstract

A vibration damping plate with simple and low-cost structure and capable of realizing to effectively decrease radiation sound is provided in the present invention. The vibration damping plate (21) is three thinner steel plates (22) with same shape and with impinging state, and is integrated by left and right a pair of rivets. In order to prevent dissimilar metal from contact corrosion, on the jointing surface of the vibration damping plate (21) and a camshaft transmission chain cover (6), coating and clamping sealing material (26). Under the situation of vibrating of the vibration damping plate along a brace shaft (18), one side of each steel plate (22) stronger contacts and the other side of each steel plate relatively slides along left and right direction. Its result is, the vibration energy is consumed by each steel plate (22) sliding contact surface friction (that is heat), the vibration damping plate (21) (that is the camshaft transmission chain cover (6)) vibration is attenuated, it can effectively restrain the radiation sound generated from the camshaft transmission chain cover (6).

Description

technical field [0001] The present invention relates to a vibration damping plate mounted on an engine of a motor vehicle, etc., and specifically relates to a technology capable of effectively reducing radiated sound and the like while having a simple and inexpensive structure. Background technique [0002] In the engine of a motor vehicle, various cover parts such as the camshaft drive chain cover, the oil pan, and the cylinder head cover are installed, but most of these cover parts are thin-walled with aluminum alloy or steel plate as raw materials. Products may resonate with crank vibration, etc., and become the source of radiation noise. Hitherto, as a technique for reducing such radiated noise, it has been proposed to place a sound-absorbing / vibration-proof material made of glass fiber or rubber on the inside of the timing belt cover so that the sound from the engine body is transmitted to the timing belt cover. Vibration is absorbed and attenuated method (referring to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/139F02F7/00
CPCF16F7/08F02B77/13
Inventor 今井乔弘上田浩史村上修
Owner HONDA MOTOR CO LTD