CN202833836U

CN202833836U - Vibration isolator

Info

Publication number: CN202833836U
Application number: CN 201220496639
Authority: CN
Inventors: 易增辉; 姚宗诚; 谭奇
Original assignee: CHENGDU SINE SCIENCE AND TECHNOLOGY Ltd
Current assignee: CHENGDU SINE SCIENCE AND TECHNOLOGY Ltd
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2013-03-27
Anticipated expiration: 2022-09-26

Abstract

The utility model provides a vibration isolator which comprises an outer shell and an inner shell arranged inside the outer shell. The outer shell is connected with the inner shell through springs, the inner shell is in a cuboid shape, the springs are arranged on all of the six outer surfaces of the inner shell, and damping agent is fully filled between the outer shell and the inner shell. Due to the fact that the springs are arranged on shafts along three directions of the outer surface of the inner shell, damping effect responding to multi-directional complex vibration is improved; and the damping agent and spring combination method enables the damping effects of the vibration isolator to both broadband vibration and narrowband vibration are also improved, and is favorable for the miniaturization of the vibration isolator.

Description

Vibration isolator

Technical field

The utility model relates to a kind of vibration isolator.

Background technique

When electronic equipment was worked under strong vibration, thump environment, the performance index of equipment, operating life, reliability can reduce, during serious vibration even can cause disabler, device damage.Electronic equipment being arranged in the inner casing of vibration isolator, is the Main Means that addresses the above problem at present.Because the narrow limitation of Traditional Thinking, the bump that the understanding of vibration just is confined to be subject to external force is caused, and has ignored the impact that the spontaneous vibrations of electronic device itself cause.Existing vibration isolator only is provided for the spring of vibration damping at two of inner casing relative outer side surfaces, inner casing is sling, and makes inner casing be in the approximate state that suspends.This setup not only effectiveness in vibration suppression is limited, and needs to reserve enough large space between inner casing and shell, and for increasing spring length and avoid inner casing and cover attack, this just is unfavorable for the miniaturization of vibration isolator.Adopt the mode of spring damping, although simple in structure, spring is not good to the effectiveness in vibration suppression of wideband vibration.

The model utility content

Technical problem to be solved in the utility model provides a kind of vibration isolator, and this vibration isolator combines multiple vibration damping mode, has greatly improved effectiveness in vibration suppression, and helps the integral miniaturization of vibration isolator.

The technological scheme that the utility model technical solution problem adopts is: vibration isolator comprises shell and is arranged at the interior inner casing of shell, described shell is connected by spring with inner casing, described inner casing is cuboid, six outer surfaces at described inner casing are provided with spring, fill up damping agent between described shell and inner casing.On three axis of orientations of inner casing outer surface, spring is set all, improve the effectiveness in vibration suppression of the multi-direction complex vibration of reply, the mode that damping agent combines with spring makes vibration isolator all be improved to the effectiveness in vibration suppression of wideband and narrow frequency vibration, and is conducive to the miniaturization of vibration isolator.

Described spring is helical spring, and when requiring the effectiveness in vibration suppression that reaches identical, helical spring contour projector is larger, and required spring length is shorter.

Be to strengthen the adaptability of vibration isolator in the irregular oscillation environment, four of described inner casing vertically outside the rib place be provided with spring.

The beneficial effects of the utility model are: set-up mode and the increase vibration reducing measure of this vibration isolator by changing spring, improved effectiveness in vibration suppression greatly.Not only can more effectively tackle complicated irregular oscillation, and dwindle the distance between inner casing and the shell, the overall volume of vibration isolator is dwindled, help the miniaturization of electric equipment.Between inner casing and shell, damping agent is set, vibration isolator is improved significantly to the effectiveness in vibration suppression of wideband vibration, and the vibration of electronic device self is also had certain consumption.The electronic device that the good effectiveness in vibration suppression of this vibration isolator can be arranged on inner casing inside keeps normal operation in the vibration environment of complexity, improve the continuity of equipment work, the working life of extension device.

Description of drawings

Fig. 1 is the structural representation of the utility model vibration isolator.

Fig. 2 is the plan structure schematic diagram of the utility model vibration isolator.

Embodiment

As shown in Figure 1, inner casing 2 is cuboid, on six outer surfaces of inner casing 2 spring 3 is set all, and the other end of spring 3 is connected with the inwall of shell 1.Spring 3 holds up inner casing 2, makes inner casing 2 be in the approximate state that suspends and since inner casing 2 all be provided with up and down spring 3, so in the complex vibration environment, can play better the effect of vibration damping.And between shell 1 and inner casing 2, fill up damping agent 4, further improve effectiveness in vibration suppression.Damping agent 4 can effectively absorb the energy of wideband vibration, and damping agent 4 combines with spring 3, and wideband vibration and narrow frequency vibration are had well damping effect.In the course of the work, different electronic components is installed in the inner casing 2 as required, some electronic component self can produce vibration when work, spread out of next vibration from inner casing 2 inside for this, because damping agent 4 has certain flowability, the effect of subduing vibrational energy is arranged also, so employing this setup, no matter vibration wave imports into outside shell 1, or spread out of in the inner casing 2, all have good damping effect.

A kind of better mode is, spring 3 adopts helical springs, in the situation that the identical damping force of needs, helical spring contour projector is larger, and Len req is shorter, can reduce the distance between shell 1 and the inner casing 2, is conducive to the integral miniaturization of vibration isolator.

As shown in Figure 2, four of inner casing 2 vertically outside the rib place spring 3 is set.In the complex vibration environment, most vibration can cause inner casing 2 to swing in the horizontal direction, and swaying direction constantly changes, inner casing 2 is made approximate circular movement in the horizontal direction, so the rib place arranges spring 3 outside vertically, can reduce spring 3 amount of bow in the axial direction that is arranged at inner casing 2 sides, prolong the working life of spring 3, more effectively subdue the vibration on the substantially horizontal simultaneously.

Through evidence, the effectiveness in vibration suppression of this vibration isolator is obvious, than traditional vibration isolator very much progress is arranged also.Such as, the same frequency synthesizer of packing in inner casing 2 is tested traditional vibration isolator and the utility model vibration isolator with identical test condition, uses the frequency synthesizer of the utility model vibration isolator, and the decibels that its phase noise worsens has reduced by 60%.

Claims

1. vibration isolator, comprise shell (1) and be arranged at the interior inner casing (2) of shell (1), described shell (1) is connected by spring (3) with inner casing (2), it is characterized in that: described inner casing (2) is cuboid, six outer surfaces at described inner casing (2) are provided with spring (3), fill up damping agent (4) between described shell (1) and inner casing (2).

2. vibration isolator according to claim 1, it is characterized in that: described spring (3) is helical spring.

3. vibration isolator according to claim 1 is characterized in that: four of described inner casing (2) vertically outside the rib place be provided with spring (3).