Variable damping vibration reduction device for washing machine and washing machine

A vibration damping device and variable damping technology, applied in the field of washing machines, can solve the problems of small spring deformation, reduced swing stability of the outer tub, large damping force, etc., so as to improve the level of vibration and noise, improve the dehydration start performance, and improve the vibration reduction. The effect of the noise effect

Active Publication Date: 2020-06-19
HEFEI HAIER WASHING MACHINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above structure uses a group of series-connected springs to provide damping force, this series connection method does not solve the problem of providing a relatively large damping force to suppress the vibration of the internal system at the moment of dehydration; in addition, if the overall length of the shock absorber remains unchanged, then The length of the two sets of springs must be reduced, relatively increasing the elastic coefficient of the two springs, the spring deformation is small, and cannot provide a small damping force in the stable stage of dehydration; The overall length of the vibrator reduces the stability of the swing of the outer barrel, especially during dehydration, it is easy to hit the barrel eccentrically and generate noise

Method used

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  • Variable damping vibration reduction device for washing machine and washing machine
  • Variable damping vibration reduction device for washing machine and washing machine
  • Variable damping vibration reduction device for washing machine and washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 2 , image 3 , Figure 6 and Figure 10 As shown, the damping sleeve 8 described in this embodiment is arranged between the upper bracket 2 and the bracket 6, and the damping sleeve 8 includes a tray 81 supporting the upper bracket 2, which is located under the tray 81 and extends into the To the support sleeve 82 in the bracket 6 and the hanger installation hole 83 axially penetrating the tray 81 and the support sleeve 82 . The damping sleeve 8 is a damping rubber sleeve with a T-shaped integral structure as a whole.

[0054] Further, such as Figure 4 As shown, the pallet 81 is provided with a first variable damping structure 10 that makes the inner diameter of the boom installation hole 83 smaller after being stressed, and the first variable damping structure 10 is arranged on the upper end surface of the pallet 81 to support the upper bracket 2, and The downward pressure of the support 2 is converted into the radial deformation pressure of the d...

Embodiment 2

[0060] Such as Figure 8 and Figure 11 As shown, the damping sleeve 8 described in this embodiment is arranged between the bracket 6 and the pressure buffer mechanism, and the pressure buffer mechanism includes an upper spring seat 7, a damping spring 4 and a lower spring seat 5, and The vibrating spring 4 is installed between the upper spring seat 7 and the lower spring seat 5, and the damping sleeve 8 includes a tray 81 supporting the bracket 6, a support sleeve 82 arranged below the tray 81 and extending into the upper spring seat 7 and Axially penetrates the suspension rod installation hole 83 of the tray 81 and the support sleeve 82 . The damping sleeve 8 is a damping rubber sleeve with a T-shaped integral structure as a whole.

[0061] Further, the pallet 81 is provided with a first variable damping structure 10 that makes the inner diameter of the boom mounting hole 83 smaller after being stressed (see Figure 4 ), the first variable damping structure 10 is set on t...

Embodiment 3

[0067] This embodiment is the combination of embodiment one and embodiment two, such as Figure 9 As shown, a damping sleeve 8 is provided between the upper bracket 2 and the bracket 6, and between the bracket 6 and the pressure buffer mechanism.

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PUM

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Abstract

The invention discloses a washing machine variable damping vibration reduction device and a washing machine. The variable damping vibration reduction device comprises a suspension rod, an upper bracket, a casing and a pressure buffer mechanism arranged in the casing. The upper end of the casing has a bracket, and the suspension rod runs through The upper support and the bracket extend into the casing and connect with the pressure buffer mechanism. At least one set of damping sleeves on the boom is provided between the upper support and the pressure buffer mechanism. The damping sleeve provides variable damping for the suspension rod. force. When the washing machine starts dehydration operation, the eccentric load is too large, the outer tub exerts eccentric force on the damping sleeve, the damping sleeve radially deforms and squeezes the suspender, and the damping force becomes larger; the dehydration continues, the eccentric load becomes smaller, and the outer tub is released for damping The eccentric force of the sleeve, the damping sleeve recovers, and the damping force becomes smaller. The invention can smoothly change the elastic coefficient of the suspension rod for vibration reduction, improves the vibration reduction performance, reduces the working noise, and enhances the vibration reduction effect.

Description

technical field [0001] The invention relates to the technical field of washing machines, in particular to a vibration damping device for a washing machine, in particular to a variable damping vibration reduction device for a washing machine and a washing machine using the vibration reduction device. Background technique [0002] Existing washing machines are divided into pulsator washing machines and drum washing machines. The structure of the pulsator washing machine includes: a shell forming the appearance of the washing machine; an outer shell that is suspended and fixed by a supporting member and used to accommodate washing water is provided inside the shell; Barrel; rotatably installed inside the outer barrel and an inner barrel with an agitator at the bottom; a driving motor installed on the lower side of the outer barrel and used to generate the driving force of the agitator and the inner barrel; used to drive the driving force of the driving motor The power transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F37/24
CPCD06F37/20
Inventor 吕佩师杨林张刚金田云高升成
Owner HEFEI HAIER WASHING MACHINE
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