CN2314151Y - High and low pressure pivotally controlling vibration absorber - Google Patents

Abstract

The utility model relates to a device for vibration absorbing of a vehicle, comprising an operating cylinder, a piston rod provided with a piston and a retaining ring, an end plug and a sealing ring. The utility model is characterized in that the outer of the operating cylinder is provided with an outer cylinder which has the same shaft line as the operating cylinder. A gap is arranged between the two oil cylinders and is communicated with the operating cylinder, and the bottom of the operating cylinder is provided with a gyrator which is provided with an impeller. Consequently, the utility model solves the problems of road surface pollution caused by the oil leakage, the heat generation and the burning out caused by the reduction of the oil mass of the vibration absorber, the failure of the vibration absorber, the spring breakage, etc. existing in prior vehicle vibration absorber. The vibration absorber of the utility model has good vibration absorbing effect, and the service life can reach to more than three to five years.

Description

The high low pressure controlled vibration damper that circles round

The utility model relates to a kind of device that is used for automobile shock.

The existing device that is used for automobile shock can be seen from Figure 11, it contains the affixed back-up ring 12 of spacing usefulness on the piston rod 11, piston rod of operating cylinder 5 and band piston 14, and piston rod is with having seal ring 7, guiding device 8 and plug 1 between the operating cylinder; The bottom of operating cylinder have floating piston 14 ' and the top that is filled with nitrogen, operating cylinder be filled with fluid, affixed spring seat 4 on the outer wall of operating cylinder.The screw top of piston rod can be connected on the automotive body vibration damper, this spring of damping spring (not giving expression among Figure 11) has been installed on the spring seat 4 of operating cylinder has been positioned at simultaneously under the vehicle body; Operating cylinder is affixed with the propons or the back axle of automobile.When automobile travelled on rugged road surface, vehicle frame promptly was reflected in the to-and-fro motion of piston rod in operating cylinder with the top ripple between the wheel, and this motion is subjected to the fluid damping effect in the cylinder, thereby makes the top wave attenuation, even also automobile shock.The shortcoming of existing this damping device is: the path that circles round because of no fluid in the operating cylinder, so be easy to from seal ring to external leakage behind the fluid pressurized, ground is not only polluted in this leakage, and with the minimizing of operating cylinder Fluid Volume, cylinder such as piston rod, piston inner assembly will generate heat, so that burn out defective shock absorber; Along with the inefficacy of vibration damper, the damping spring of bearing on the spring seat 4 of cushioning effect with this vibration damper can quicken to rupture because of load.Usually, have only 4-5 month the working life of this automobile absorber.

The purpose of this utility model is to overcome the existing shortcoming of above-mentioned existing automobile absorber, and a kind of high low pressure controlled vibration damper that circles round is provided, so that it has characteristics such as good damping effect, oil-proof and long service life.

The utility model high low pressure controlled vibration damper that circles round includes the piston rod of operating cylinder, band piston and back-up ring, and plug, seal ring, its feature is: the outside of operating cylinder has an outer oil cylinder with its coaxial line, leave the gap between two oil cylinders, this gap is communicated with the operating cylinder intracavity space, and the Gyrator of a band impeller is equipped with in the bottom of operating cylinder.

The Gyrator of the utility model vibration damper can contain housing, be installed in the band pressure hole at housing center and slotted eye mandrel, the vent pads valve block that on mandrel, is connected, suppress mainspring, atresia pad, impeller, packing ring, pad valve block, pad, grooved metal gasket, flowing valve.

The utility model vibration damper can be equipped with piston ring on piston rod, this piston ring can include upward a ring and the following ring of being made by powder metallurgy made by polyethylene.

Piston rod in the utility model vibration damper with the vehicle frame of automobile connect, the outer wall of vibration damper connects with the propons or the back axle of automobile.When automobile running during on rugged road surface, the piston rod that is connected with automotive body promptly moves in the operating cylinder of vibration damper, at this moment push the work forward in-oil cylinder air and fluid of piston, make they from operating cylinder enter operating cylinder with outside gap between the oil cylinder, or get back to operating cylinder from the gap.Impeller in the Gyrator rotates when the motion of piston rod, and it has strengthened the power that fluid flows, and guarantees the unobstructed of fluid passage; Meanwhile, the damping of fluid makes the piston rod movement decay, and automobile running is steady.

The utility model has the advantages that: 1) vibration damper in the course of the work, fluid in its operating cylinder under the effect of Gyrator, enter operating cylinder with outside gap between the oil cylinder, therefore reduced pressure, guaranteed that vibration damper is oil-proof at work, do not polluted ground to external world's leakage; 2) vibration damper is oil-proof guarantees the constant of operating cylinder Fluid Volume, so reciprocating part such as piston, piston rod can be because of heating burn out, but can work enduringly; Usually can reach 3-5 the working life of the utility model vibration damper; 3) its assembly of the impeller on the Gyrator both can make the unimpeded nothing in fluid passage stifled, and can increase the damping of fluid, and damping effect is improved widely; 4) because of the good damping effect and the long service life of the utility model vibration damper, so the damping spring on its outer wall can not rupture, and can improve widely working life, thereby reduce the maintenance cost and the maintenance load of automobile.

To and contrast accompanying drawing by embodiment below, the utility model will be further described below.Have in the accompanying drawing:

Fig. 1 is the circle round positive view of controlled vibration damper of the utility model high low pressure;

Fig. 2 is the positive view enlarged view of the Gyrator 36 among Fig. 1;

Fig. 3-Figure 10 is the parts drawing of one group of assembly on the Gyrator, and wherein Fig. 3 is the positive view of vent pads valve block 26; Fig. 4 is the positive view and the worm's eye view of flowing valve 34; Fig. 5 is positive view and the plan view that suppresses mainspring 28; Fig. 6 is the positive view and the plan view of grooved metal gasket 33; Fig. 7 is the positive view and the plan view of impeller 29, and Fig. 8 is the positive view and the plan view of pad 32; Fig. 9 is the positive view and the plan view of porose pad 31, and Figure 10 is the positive view of mandrel 25,

Figure 11 is the positive view of correlation technique of the present utility model.

From Fig. 1, can see the circle round structure of controlled vibration damper of the utility model high low pressure, it includes operating cylinder 5 and an outer oil cylinder 2 of installing with this oil cylinder coaxial line, band piston 14, back-up ring 12 and a piston ring 8 are housed in the operating cylinder, Gyrator 36 is equipped with in the bottom of operating cylinder, operating cylinder leaves gap 3 with between the outer oil cylinder, and a lining 9 is housed between two oil cylinders, has balance inclined hole 6 on this lining, so that the intracavity space of operating cylinder is connected with the space in gap 3.In addition; plug 1, seal ring 7 are housed between operating cylinder and the outer oil cylinder, outer oil cylinder bottom has end socket 15; the piston ring 8 that kink connects on piston rod 11; ring is the polyethylene ring on it, ring is the powder metallurgy ring down; their form the intermediate support of piston rod, and the motion of piston rod is played the guiding protective action.

The structure of Gyrator 36 can see from Fig. 2 and Fig. 3-Figure 10 that also wherein Fig. 2 is the enlarged view of Gyrator positive view, and Fig. 3-Figure 10 is the parts drawing of Gyrator assembly.It contain a housing 36 with the affixed one of operating cylinder ', a special mandrel 25 has been installed at the housing center, and the atresia pad 27 of vent pads valve block 26, the atresia pad 27 that suppresses mainspring 28, top, impeller 29, packing ring 30, porose pad 31, pad 32, grooved metal gasket 33, flowing valve 34, below has been installed on the mandrel from top to bottom successively.The center, upper end of mandrel is provided with pressure hole 37, the lower end is provided with the slotted eye 38 that the exhaust oil extraction is used.

The utility model vibration damper is fixed on the propons of automobile by the connecting plate 17 on its device outer wall, and its piston rod is threaded on the automotive body by its top.When travelling on the road surface of automobile in injustice, piston rod 11 to-and-fro motion in operating cylinder, thereby promoted each assembly on the Gyrator, make the fluid in the operating cylinder, air flows to the gap from operating cylinder, get back to operating cylinder from the gap, in flowing, be subjected on the Gyrator each part to fluid, the damping function of air and make the vibration attenuation of automobile, wherein suppress mainspring 28 and play the high low pressure damping function, when the damping force that the atresia pad 27 of top produces because of vibration at vehicle presses down, it can cover on impeller, impeller is not changeed, at this moment the slotted eye 38 beginning automatic vent and the oil extractions of mandrel bottom, and fluid circles round in the duct of grooved metal gasket 33 and flowing valve 34 automatically, and meanwhile, the atresia pad 27 of below stops fluid row down, thereby produce the high low pressure damping function, make vehicle driving steady; In addition, when piston rod moves downward, in the operating cylinder by compression pressurized gas enter the pressure hole 37 at mandrel top, to impeller, make wheel rotation in hole inside turn after-blow; The rotation of impeller can guarantee that each oilhole of Gyrator can not stop up and fluid can flow to gap 3, therefore fluid can be to leaking outside, thereby assemblies such as the fluid that has guaranteed vibration damper can minimizing, piston rod and piston can not be burnt out, and prolong the working life of vibration damper.

Claims (2)

1, a kind of high low pressure controlled vibration damper that circles round, it contains operating cylinder (5), has the piston rod (11) of piston (14) and back-up ring (12), and plug (1), seal ring (7), feature of the present utility model is: the outside of operating cylinder has between outer oil cylinder (2) two oil cylinders of and its coaxial line leaves gap (3), this gap is communicated with the operating cylinder intracavity space, and the Gyrator (36) of a band impeller (29) is equipped with in the bottom of operating cylinder.

2, the high low pressure as claimed in claim 1 controlled vibration damper that circles round is characterized in that: said Gyrator (36) can contain housing (36 '), be installed in the band pressure hole (37) at housing center and slotted eye (38) mandrel (25), the vent pads valve block (26) that on mandrel, is connected, suppress mainspring (28), atresia pad (27), impeller (29), packing ring (30) pad valve block (31), pad (32), grooved metal gasket (33) and flowing valve (34).

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