CN208153604U - A kind of air spring that piston diameter is variable - Google Patents
A kind of air spring that piston diameter is variable Download PDFInfo
- Publication number
- CN208153604U CN208153604U CN201820457450.7U CN201820457450U CN208153604U CN 208153604 U CN208153604 U CN 208153604U CN 201820457450 U CN201820457450 U CN 201820457450U CN 208153604 U CN208153604 U CN 208153604U
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- China
- Prior art keywords
- piston
- air spring
- pneumatic bag
- rubber pneumatic
- valve
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Abstract
The utility model discloses the air springs that a kind of piston diameter can be changed, including cover board, rubber pneumatic bag, piston assembly, the lower port of the cover board is pressed rubber pneumatic bag, the lower port of the rubber pneumatic bag is fitted in piston assembly, the piston assembly includes hollow plunger piston skeleton, the piston mandril of the piston framework bottom is set with being slidably matched, if being circumferentially equably movably articulated in the stem piston valve in the piston framework circumferential wall, the middle part of the piston mandril and each piston valve is movably hinged by connecting rod, form multiple groups slider-crank mechanism.The utility model can change the position of piston mandril in piston assembly by actuation mechanism to strut piston valve, to regulating piston diameter and air spring effective diameter, with vehicle body height regulating mechanism synergy, the load-bearing rigidity of air spring can be changed in the case where load capacity is constant.
Description
Technical field
The utility model belongs to Air Spring for Automotive Suspension product technical field more particularly to a kind of piston diameter is variable
Air spring.
Background technique
Existing air spring for automobile structure is mainly made of cover board, rubber pneumatic bag, piston, wherein piston-shaped is fixed
's.Experimental study shows the relationship of air spring force and decrement as shown in figure 8, characteristic interval under each air pressure
Roughly equal, after carrying out air pressure normalization to it, height of curve is overlapped.This is illustrated：
（1）When other conditions are constant, all there are proportional relationships with air pressure for bearing capacity and rigidity.
（2）In the case where bearing capacity is constant, the rigidity of air spring changes on year-on-year basis with bearing capacity.
This means that the rigidity of air spring is passively to change with loading capacity, size is determined by vehicle load capacity
Fixed, this characteristic is basically unchanged the offset frequency of air suspension, but in the case that bearing capacity is constant in vehicle travel process, nothing
Method effectively adjusts the stiffness characteristics of air spring, also just cannot achieve suspension variable rigidity control truly.
Therefore, research and develop that a kind of rigidity is adjustable, even controllable air spring is extremely urgent.
Experimental study shows the relationship of air spring effective diameter and piston diameter as shown in figure 9, its slope of curve is 1/
2.Further theoretical research shows：Air spring effective diameter is equal to piston diameter and the arithmetic of rubber pneumatic bag maximum outside diameter is flat
Mean value, changing piston diameter is the effective means for adjusting air spring rigidity.
Utility model content
The purpose of the utility model is to overcome the deficiencies of existing design, specifically disclose a kind of adjustable air bullet of piston diameter
Spring, the air spring is in the case where load capacity is constant, thus it is possible to vary the load-bearing rigidity of air spring, and then it is outstanding to change vehicle
The performance of frame provides a kind of new approaches for the control of suspension property.
In order to reach above-mentioned technical purpose, the utility model is realized by following technical scheme：
A kind of air spring that piston diameter is variable, including cover board, rubber pneumatic bag, piston assembly, the lower end of the cover board
Mouth press fitting rubber pneumatic bag, the lower port of the rubber pneumatic bag are fitted in piston assembly, and the piston assembly includes hollow
Plunger piston skeleton, is circumferentially equably movably hinged at the piston framework bottom is arranged in piston mandril with being slidably matched
If the stem piston valve in the piston framework circumferential wall, the middle part of the piston mandril and each piston valve is living by connecting rod
It is dynamic hinged, form multiple groups slider-crank mechanism.
Further, completely included recessed if being provided with the corresponding piston valve of capable person in the piston framework circumferential wall
Slot.
Further, the inclined-plane matched is provided in groove described in the free end skill of the piston valve.
Further, the piston mandril is connected with actuation mechanism, to realize the automatic adjustment of piston flap position.
Further, the rubber pneumatic bag lower part is provided with several parallel with the position that piston framework and piston valve are in contact
Abrasion band improve the service life of rubber pneumatic bag to cope with higher frictional strength.
Further, the material of the abrasion band is butyl rubber.
Compared with prior art, the utility model has the beneficial effects that：
（1）The utility model realizes the asynchronous variation of air spring bearing capacity and rigidity, to be equipped with air suspension
Vehicle in the process of moving suspension rate it is effective adjusting open an effective road.
（2）Abrasion tape of the rubber pneumatic bag lower part of the utility model with protrusion, to cope with higher frictional strength.
（3）The piston-shaped profile of the utility model, which can according to need, change with adaptive, different rigid to meet
Degree requires.
（4）The utility model structure is simple, easily realizes, flexibility with higher and reliability.
Detailed description of the invention
Fig. 1 is the variable air spring half-section diagram of piston diameter described in the utility model.
Fig. 2 is the half-section diagram of the variable air spring other direction of piston diameter described in the utility model.
Fig. 3 is the variable piston assembly stereoscopic schematic diagram of diameter described in the utility model.
Fig. 4 is the variable piston assembly semi-cutaway of diameter described in the utility model.
Fig. 5 is the semi-cutaway of the variable piston assembly other direction of diameter described in the utility model.
Fig. 6 is rubber pneumatic bag described in the utility model and abrasion band schematic diagram.
Fig. 7 is enlarged diagram at A in Fig. 6.
Fig. 8 is the relationship of air spring force and decrement.
Fig. 9 is the relationship of air spring effective diameter and piston diameter.
In figure：1- cover board；2- rubber pneumatic bag；3- piston assembly；4- piston framework；5- piston valve；6- connecting rod；7- piston top
Bar；8- wears band.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 5, the variable air spring of a kind of piston diameter, including cover board 1, rubber pneumatic bag 2, piston are total
At 3, the lower port of the cover board 1 is pressed with rubber pneumatic bag 2, and the lower port of the rubber pneumatic bag 2 is fitted in piston assembly 3,
The piston assembly 3 includes hollow plunger piston skeleton 4,4 bottom of piston framework is arranged in work with being slidably matched
Fill in mandril 7, eight piston valves 5 being circumferentially equably movably articulated in 4 circumferential wall of piston framework, the piston mandril
7, which pass through connecting rod 6 with the middle part of each piston valve 5, is movably hinged, and forms eight groups of slider-crank mechanisms, each piston valve 5 passes through
Be articulated and connected piston framework 4, and can be around the hinged rotation to achieve the purpose that change piston diameter.
It is described if being provided with the completely included groove of the corresponding piston valve 5 of capable person in 4 circumferential wall of piston framework
Piston valve 5 free end skill described in be provided with the inclined-plane matched in groove.When piston valve 5 is accommodated in groove completely, institute
The shape contour for stating piston assembly 3 is identical as the piston-shaped profile of existing air spring (see Fig. 5).
The piston mandril 7 is connected with actuation mechanism, to realize the automatic adjustment of piston flap position.
In addition, as shown in Figure 6 and Figure 7, the position that 2 lower part of rubber pneumatic bag is in contact with piston framework 4 and piston valve 5
Several parallel abrasion bands 8 are provided with, to cope with higher frictional strength, improve the service life of rubber pneumatic bag 2.The abrasion
Material with 8 is butyl rubber.
In the present invention, the shape contour of the piston assembly 3, which can according to need, change with adaptive, with full
The different rigidity requirement of foot.
The operation principle and process of detailed description below the utility model：
1, when installing, the piston mandril 7 of the air spring need to be connected with actuation mechanism, to control crank block machine
The position of sliding block in structure, then above-mentioned air spring is installed in the automotive suspension configured with height adjustment mechanism.
2, while the car is driving, when suspension needs bigger rigidity, actuation mechanism pushes piston mandril 7, so that
Each piston valve 5 is turned out certain angle (see Fig. 4), so that the effective diameter and effective area of piston assembly 3 become larger, it is empty
Gas spring bearing capacity is greater than car body weight, and suspension height increases at this time, and height adjustment mechanism intervention reduces gas inside air spring
Pressure, so that depression of bearing force is balanced each other as car body weight, although at this time bearing capacity relative to adjust before do not change, significant surface
Product is but increased with the change rate of height, so rigidity before adjusting also than increasing.Vice versa.
From the foregoing, it will be observed that in the present invention, when carrying out stiffness tuning to air spring, bearing capacity is remained unchanged,
It can be adapted for vehicle in the process of moving to the adjusting of suspension property and control.
Structure is simple and easy to implement for the utility model, can according to need and change with adaptive, and changing piston diameter is to adjust
Air spring rigidity is saved, to meet different rigidity requirements.
The utility model is not limited to above embodiment, and all various changes or modifications to the utility model do not take off
Spirit and scope from the utility model, if these modification and variations belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also implied that comprising these modification and variations.
Claims (6)
1. a kind of variable air spring of piston diameter, including cover board (1), rubber pneumatic bag (2), piston assembly (3), the cover board
(1) lower port is pressed rubber pneumatic bag (2), and the lower port of the rubber pneumatic bag (2) is fitted on piston assembly (3), feature
It is：The piston assembly (3) includes hollow plunger piston skeleton (4), the piston framework is arranged in being slidably matched
(4) piston mandril (7) of bottom, be circumferentially equably movably articulated in the piston framework (4) if stem piston in circumferential wall
The middle part of valve (5), the piston mandril (7) and each piston valve (5) passes through connecting rod (6) living hinge, forms multiple groups crank
Slide block mechanism.
2. the variable air spring of piston diameter according to claim 1, it is characterised in that：Piston framework (4) circle
If being provided with the completely included groove of the corresponding piston valve (5) of capable person on peripheral wall.
3. the variable air spring of piston diameter according to claim 2, it is characterised in that：The piston valve (5)
The inclined-plane matched is provided in groove described in the skill of free end.
4. the variable air spring of piston diameter according to claim 1, it is characterised in that：The piston mandril (7)
It is connected with actuation mechanism.
5. the variable air spring of piston diameter according to claim 1, it is characterised in that：Under the rubber pneumatic bag (2)
Portion is provided with several parallel abrasion bands (8) with the position that piston framework (4) and piston valve (5) are in contact.
6. the variable air spring of piston diameter according to claim 5, it is characterised in that：The material of the abrasion band (8)
Material is butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820457450.7U CN208153604U (en) | 2018-04-03 | 2018-04-03 | A kind of air spring that piston diameter is variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820457450.7U CN208153604U (en) | 2018-04-03 | 2018-04-03 | A kind of air spring that piston diameter is variable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153604U true CN208153604U (en) | 2018-11-27 |
Family
ID=64379946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820457450.7U Expired - Fee Related CN208153604U (en) | 2018-04-03 | 2018-04-03 | A kind of air spring that piston diameter is variable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208153604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412935A (en) * | 2018-04-03 | 2018-08-17 | 华南理工大学 | A kind of air spring that piston diameter is variable |
-
2018
- 2018-04-03 CN CN201820457450.7U patent/CN208153604U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412935A (en) * | 2018-04-03 | 2018-08-17 | 华南理工大学 | A kind of air spring that piston diameter is variable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20190403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |