CN207830430U - A kind of damping air spring - Google Patents

Abstract

The utility model is related to a kind of damping air springs, including cylinder barrel, built-up piston, piston rod, built-up piston to be slidably arranged in cylinder barrel, so that cylinder barrel internal insulation is at air storage chamber and fluid reservoir；Built-up piston includes isolating valve, guide valve, sealing ring, outer groove is set on the external annulus of isolating valve, so as to form left ring wall and right ring wall on the isolating valve, the rectangular in cross-section of the outer groove, when so that sealing ring being placed in outer groove for sealing off air storage chamber with fluid reservoir, there are gaps at the bottom end both sides of sealing ring and outer groove bottom comers；The first axis oilhole communicated with outer groove is set on left ring wall, annular oil storage tank is set in the end face outside of right ring wall, the axial oilhole of setting second is for being connected to outer groove and oil storage tank on right ring wall；Radial oil groove is additionally provided in the end face outside of right ring wall, which is extended to the edge of right ring wall by oil storage tank.

Description

A kind of damping air spring

Technical field

The utility model is related to gas spring technology field, especially a kind of damping air spring.

Background technology

Gas spring is a kind of industry accessories that can play the functions such as support, buffering, braking, height adjusting and angular adjustment. Gas spring technology invention and its application have decades history, gas spring type available on the market is various, mainly by The compositions such as piston and piston rod in cylinder barrel, cylinder barrel.When work, piston rod is pressed into cylinder barrel, and piston makees axial transport in cylinder barrel It is dynamic to squeeze fluid, and fluid compressed gas makes piston reach operating position；After the external force of load on the piston rod disappears, Then gas is restored and is expanded, and the gas push fluid of expansion makes piston reset, and piston rod is removed, and gas spring is made to realize compression fortune Dynamic and recovery damped motion.Existing gas spring damping force is smaller, complicated.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of gas springs simple in structure, damping is good.

In order to solve the above technical problems, damping air spring provided by the utility model, including cylinder barrel, built-up piston, work Stopper rod, the built-up piston are slidably arranged in the cylinder barrel, so that the cylinder barrel internal insulation is at air storage chamber and fluid reservoir； The built-up piston includes isolating valve, guide valve, sealing ring, and outer groove is arranged on the external annulus of the isolating valve, so that should Left ring wall and right ring wall, the rectangular in cross-section of the outer groove are formed on isolating valve, so that the sealing ring is placed in the outer groove It is interior for sealing off the air storage chamber and fluid reservoir when, at the bottom end both sides of sealing ring and outer groove bottom comers there are Gap；The first axis oilhole communicated with outer groove is set on the left ring wall, annular is set in the end face outside of the right ring wall Oil storage tank, the axial oilhole of setting second is for being connected to outer groove and oil storage tank on the right ring wall；The outboard end of the right ring wall Radial oil groove is additionally provided on face, which is extended to the edge of right ring wall, the guide valve and the right ring by oil storage tank The end face outside of wall is fixedly linked, and the tail end of the piston rod is inserted into the cylinder barrel to be coordinated with guide valve transmission, so that described Piston rod can push the built-up piston to be slided in cylinder barrel, the indoor fluid of liquid storage can through first axis oilhole, outer groove, Second axial oilhole, oil storage tank, radial oil groove enter air storage chamber.

Further, 2 times of a diameter of second axial oil bore dia of the first axis oilhole, to increase damping effect Fruit.

Further, the radial oil groove is symmetricly set on the both sides of oil storage tank with the described second axial oilhole, to increase diameter To the distance between oil groove and the second axial oilhole so that fluid is full of oil storage tank as far as possible.

Further, limiting slot is arranged in the middle part of the cylinder barrel, so as to protrusion is inwardly formed in the middle part of cylinder barrel, to limit combined type The axial movement stroke of piston.

Further, the tail end sealing setting plug and gasket of the fluid reservoir, for sealing the fluid reservoir.

The technique effect of utility model：（1）The damping air spring of the utility model, compared with the existing technology, in fluid reservoir The oil circuit that setting is made of first axis oilhole, outer groove, the second axial oilhole, oil storage tank, radial oil groove between air storage chamber, The damping force of gas spring can be improved in the case where not increasing cylinder barrel diameter for the damping for significantly increasing gas spring, peace It is complete to stablize；（2）Radial oil groove and the second axial oilhole are symmetricly set on the both sides of oil storage tank, to increase radial oil groove and the second axis To the distance between oilhole so that fluid is full of oil storage tank as far as possible during use；（3）The setting of limiting slot can limit The axial movement stroke of built-up piston.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings of the specification：

Fig. 1 is the cross-sectional view of the utility model damping air spring；

Fig. 2 is the partial enlarged view of a-quadrant in Fig. 1；

Fig. 3 is the cross-sectional view of the built-up piston of the utility model；

Fig. 4 is the axial arrangement schematic diagram of the isolating valve of the utility model.

In figure：Cylinder barrel 1, limiting slot 11, plug 12, gasket 13, fluid reservoir sealing ring 14, piston rod 2, air storage chamber 3, storage Liquid chamber 4, built-up piston 5, guide valve 50, outer groove 51, left ring wall 52, right ring wall 53, first axis oilhole 54, second is axial Oilhole 55, oil storage tank 56, radial oil groove 57, sealing ring 6.

Specific implementation mode

Embodiment 1 is as shown in Figures 1 to 4, and the damping air spring of the present embodiment includes cylinder barrel 1, built-up piston 5, piston Bar 2, built-up piston 5 are slidably arranged in cylinder barrel 1, so that 1 internal insulation of cylinder barrel is at air storage chamber 3 and fluid reservoir 4；Fluid reservoir 4 It is placed in the tail portion in cylinder barrel 1, air storage chamber 3 is placed in the front in cylinder barrel 1；The tail end sealing setting plug 12 and gasket of cylinder barrel 1 13, it is sealed through fluid reservoir sealing ring 14 between 1 inner wall of gasket 13 and cylinder barrel；Drive end bearing bracket is arranged in the forward end seal of cylinder barrel 1； Built-up piston 5 includes isolating valve, guide valve 50, sealing ring 6, and outer groove 51 is arranged on the external annulus of isolating valve, so that should be every From forming left ring wall 52 and right ring wall 53 on valve, the rectangular in cross-section of the outer groove 51, so that sealing ring 6 is placed in outer groove 51 When for sealing off air storage chamber 3 with fluid reservoir 4, there are gaps at the bottom end both sides of sealing ring 6 and 51 bottom comers of outer groove； First axis oilhole 54 for being connected to fluid reservoir 4 and outer groove 51 is set on left ring wall 52, in the end face outside of right ring wall 53 Annular oil storage tank 56 is set, the second axial oilhole 55 is also set up on right ring wall 53 for being connected to outer groove 51 and oil storage tank 56；It is right Radial oil groove 57 is additionally provided in the end face outside of ring wall 53, radial oil groove 57 and the second axial oilhole 55 are symmetricly set on oil storage tank 56 both sides, to increase the distance between 57 and second axial oilhole 55 of radial oil groove, which is prolonged by oil storage tank 56 Extend to the edge of right ring wall 53, the end face outside of guide valve 50 and right ring wall 53 is fixedly linked so that oil storage tank 56 and radial direction oil groove 57 carry out covering sealing by the end face of guide valve 50, and the fluid into oil storage tank 56 is only capable of circulating by radial oil groove 57； The tail end of piston rod 2 is inserted into cylinder barrel 1 to be coordinated with the transmission of guide valve 50, and cooperation is sealed between 1 drive end bearing bracket of piston rod 2 and cylinder barrel； Piston rod 2 can push the sliding in cylinder barrel 1 of built-up piston 5 when use, and the fluid in fluid reservoir 4 can be through first axis oilhole 54, the axial oilhole 55 of outer groove 51, second, oil storage tank 56, radial oil groove 57 enter air storage chamber 3.

Preferably, 2 times of a diameter of second 55 diameter of axial oilhole of first axis oilhole 54, to increase damping effect Fruit.

Preferably, limiting slot 11 is arranged in the middle part of cylinder barrel 1, so that 1 middle part of cylinder barrel is inwardly formed protrusion, to limit combination The axial movement stroke of formula piston 5.

Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and is not to this reality With the restriction of novel embodiment.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these Belong to the spiritual changes and variations that derived from of the utility model still in the scope of protection of the utility model Among.

Claims (5)

1. a kind of damping air spring, which is characterized in that including cylinder barrel, built-up piston, piston rod, the built-up piston sliding It is arranged in the cylinder barrel, so that the cylinder barrel internal insulation is at air storage chamber and fluid reservoir；The built-up piston includes isolation Outer groove is arranged on the external annulus of the isolating valve, so as to form left ring wall and the right side on the isolating valve in valve, guide valve, sealing ring Ring wall, the rectangular in cross-section of the outer groove, so that the sealing ring is placed in the outer groove for sealing off the gas storage When room is with fluid reservoir, there are gaps at the bottom end both sides of sealing ring and outer groove bottom comers；It is arranged on the left ring wall and outer The first axis oilhole that annular groove communicates, the annular oil storage tank of setting in the end face outside of the right ring wall are arranged on the right ring wall Second axial oilhole is for being connected to outer groove and oil storage tank；It is additionally provided with radial oil groove in the end face outside of the right ring wall, the diameter The edge of right ring wall is extended to by oil storage tank to oil groove, the end face outside of the guide valve and the right ring wall is fixedly linked, institute The tail end for stating piston rod is inserted into the cylinder barrel and guide valve transmission cooperation.

2. damping air spring according to claim 1, which is characterized in that a diameter of described the of the first axis oilhole 2 times of two axial oil bore dias.

3. damping air spring according to claim 2, which is characterized in that the radial direction oil groove and the described second axial oilhole It is symmetricly set on the both sides of oil storage tank.

4. the damping air spring according to one of claims 1 to 3, which is characterized in that the middle part setting limit of the cylinder barrel Slot, so as to be inwardly formed protrusion in the middle part of cylinder barrel.

5. damping air spring according to claim 4, which is characterized in that the tail end sealing of fluid reservoir setting plug and Gasket.