CN101220842A - Damper of vehicle damping mechanism - Google Patents
Damper of vehicle damping mechanism Download PDFInfo
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- CN101220842A CN101220842A CNA2008100174525A CN200810017452A CN101220842A CN 101220842 A CN101220842 A CN 101220842A CN A2008100174525 A CNA2008100174525 A CN A2008100174525A CN 200810017452 A CN200810017452 A CN 200810017452A CN 101220842 A CN101220842 A CN 101220842A
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- damper
- damping
- piston
- top cover
- damping body
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Abstract
The invention discloses a damper of an automobile damping mechanism, which is provided with a bottom cylinder body and a piston which is arranged in the cylinder body in a free reciprocating motion type and has the same shaft with the cylinder body; the bottom cylinder body consists of a damper body and a top cover; the piston consists of a piston rod which passes through the top cover and a bottom surface part which is matched with the damper body; the internal wall of the damper body is uniformly provided with a plurality of curve troughs which are convex in the middle, concave at two ends and symmetrical at the left and the right along the direction of the axis line; the curve formula of the curve troughs is that y is equal to a multiplied by the absolute value of x<3>; wherein, a is less than 1 and more than minus 1; furthermore, the more the quantity of the curve troughs is or the greater the inflation pressure in the damper body is, the greater the coefficient a is; the shape of the bottom surface part of the piston which moves up and down along the curve troughs is corresponding to the shape of the internal chamber of the damper body at the center of the curve troughs. The invention has the advantages that the structure is simple, the application and operation are simple, the invention can effectively relieve the problem of excessive acceleration which is also the impact and jounce problem of the vehicle body which is caused by the change of the upper and lower speed of the vehicle body, and the discomfort of the passengers is greatly lightened.
Description
Technical field
The present invention relates to a kind of damper, especially relate to a kind of damper that is applicable to vehicle damping mechanism.
Background technique
Board-like or the spring formula shock mitigation system of the general employing of the shock mitigation system of using on the automobile, the elastic force of this shock mitigation system can not change along with payload, long easily generation service time one is tired, and lose original elasticity, sometimes because of vibrating excessive fractureing, very easily damage, change and not only bother but also waste fund.At present, though automobile absorber has a lot of structures, being divided into haply with liquids and gases is two types of working mediums.And what use mostly on the existing automobile is with the damper mechanism of liquid oils as working medium, mainly there are following two shortcomings in it: the one, owing to there is not oil between piston upper-end surface and the steel bushing, cause the difficult disappearance of fricative heat between piston rod and the oil sealing, very easily piston rod and oil sealing are damaged, and make vibration damper lose damping effect; The 2nd, between piston and the steel bushing since direct friction can produce the slit, make during work oil from the slit to external leakage, make its work deleterious, worked about three months and will scrap.The weldering of its oil sealing base and oil storage cylinder seam forms, because that welding can not guarantee between seat and the tube is concentric, so the ubiquity connecting rod bears radially torsion, makes vibration damper have the life-span weak point, the shortcoming of easy oil leakage, and can not repair.
In addition, because existing damper mainly is to utilize aperture that the effect of damming of oil is increased damping, and oil is incompressible fluid, so, when two-part up and down of damper suffer to impact suddenly, can produce bigger vibrations, the passenger is not felt well.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of damper of vehicle damping mechanism is provided, it is simple in structure, uses easy to operately, and can effectively alleviate car body up and down the caused acceleration of rapid change is excessive is the shock problem that vehicle body takes place.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of damper of vehicle damping mechanism, have the bottom tube-like cylinder body and be contained in piston 6 in the described cylinder body in coaxial free to-and-fro motion mode, its bottom tube-like cylinder body is made up of damping body 5 and top cover 3, piston 6 is formed by the piston rod that runs through top cover 3 and with the underside portion that damping body 5 is used, the inwall upper edge axial direction of described damping body 5 evenly offers a plurality of intermediate projections two concave ends and symmetrical curvilinear groove 4, and the curvilinear equation of curvilinear groove 4 is y=a|x
3|, wherein-1＜a＜1 and when the quantity of curvilinear groove 4 when the inflation pressure in the many more or damping body 5 is big more, coefficient a is big more; The underside portion shape of the described piston 6 that moves up and down along curvilinear groove 4 is corresponding with damping body 5 cavity shapes of curvilinear groove 4 centers.
As a preferred embodiment of the present invention, the quantity of described curvilinear groove 4 is 1-8.
As another kind of preferred version of the present invention, described top cover 3 is fixedly mounted on the damping body 5 by bolt 1.
As another preferred version of the present invention, the top of the underside portion that described piston 6 is connected with its piston rod is cone shape, and bottom shape is corresponding with damping body 5 cavity shapes of curvilinear groove 4 centers.
As the present invention further optimization scheme, between the described piston rod outside and the top cover 3, be provided with O type circle 2 between top cover 3 bottom outside and damping body 5 inwalls.
As another preferred version of the present invention, described a plurality of curvilinear grooves 4 all are arranged on the middle and lower part of damping body 5.
To sum up, adopt the damper of a kind of vehicle damping mechanism of the present invention, have the following advantages: 1, simple in structure, use easy to operate; 2, damping capacity is good, can keep the constant of damping constant to greatest extent; 3, can effectively alleviate the car body caused acceleration problems of too of rapid change up and down, promptly can effectively prevent the impact phenomenon that vehicle body was taken place when vehicle was crossed the hole, alleviate vehicle body greatly and shake the uncomfortable feeling of bringing to the passenger.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the damper of a kind of vehicle damping mechanism of the present invention.
Description of reference numerals:
The 1-bolt; 2-O type circle; The 3-top cover;
The 4-curvilinear groove; 5-damping body; The 6-piston;
Embodiment
As shown in Figure 1, the damper of described vehicle damping mechanism has the bottom tube-like cylinder body and is contained in piston 6 in the described cylinder body in coaxial free to-and-fro motion mode, its bottom tube-like cylinder body is made up of damping body 5 and top cover 3, and piston 6 is formed by the piston rod that runs through top cover 3 and with the underside portion that damping body 5 is used.The inwall upper edge axial direction of the body of damping simultaneously 5 offers four intermediate projections two concave ends and symmetrical curvilinear groove 4 symmetrically, and a plurality of curvilinear grooves 4 all are arranged on the middle and lower part of damping body 5.Wherein the curvilinear equation of curvilinear groove 4 is y=a|x
3|, wherein-1＜a＜1 and when the quantity of curvilinear groove 4 when the inflation pressure in the many more or damping body 5 is big more, coefficient a is big more.Wherein top cover 3 is fixedly mounted on the damping body 5 by a plurality of a plurality of bolts 1 that distribute thereon symmetrically.The top of the underside portion that the piston 6 that moves up and down along curvilinear groove 4 is connected with its piston rod is cone shape, and bottom shape is with corresponding with damping body 5 cavity shapes of curvilinear groove 4 centers.Said structure has realized that piston 6 is reciprocating along axial direction in damping body 5 inside.In addition, between the piston rod outside and the top cover 3, be provided with O type circle 2 between top cover 3 bottom outside and damping body 5 inwalls, seal by O type circle 2.
Concrete putting into practice in the course of working, the user can suitably increase or reduce the quantity of curvilinear groove 4 according to real needs, also can suitably increase or reduce simultaneously the inflation pressure in the damping body 5.The quantity of curvilinear groove 4 is one to eight generally speaking, and when the quantity of curvilinear groove 4 when the inflation pressure in the many more or damping body 5 is big more, coefficient a is big more; Vice versa.
When vehicle travels on rough road surfaces such as hollow, in various degree impact phenomenon can take place according to different road surface situation vehicle bodies, whole vehicle body can produce vertical tremor, jolt.When piston 6 was in the central position of curvilinear groove 4, the gas in formed two chambers of damping body 5 inner chambers did not flow.When the direction of stretching out along piston rod is moved, because whole intermediate projections two concave ends that are shaped as of curvilinear groove 4, thereby air flows to lower chamber from upper chamber by the slotted eye that constantly increases, thereby the air damping effect can take place, damping state when this process then upwards shakes for automobile, piston 6 protrudes upward as required lentamente till piston 6 can not move upward again.And afterwards when piston 6 moves along the interior cavity direction of the damping body 5 that submerges, air flows to upper chamber along former road from lower chamber again; Continue along the inner chamber of the damping body 5 that submerges to be directed downwards when moving and cross curvilinear groove 4 centers when the underside portion of piston 6, because the structure of intermediate projections two concave ends that curvilinear groove 4 is had can provide enough wide flow channel for air flows, air flows until the intracavity bottom of the damping body 5 that submerges fully to upper chamber from lower chamber by the slotted eye of continuous increase equally; When piston 6 again from the intracavity bottom of damping body 5 when protruding, gas flows to lower chamber from upper chamber again along former road.Because air has enough wide flow path area in flow process, can not produce yet and hinder flow air resistance between two chambers in addition.Gas flow between two gas chamber neither can be too fast up and down, otherwise will lose the air damping effect of air damper; Gas flow can be too not slow yet simultaneously, because when vehicle is accepted to impact, if gas flow is slow excessively, it is poor that damper absorbs the function of impact energy.Said structure of the present invention is head it off effectively, can guarantee well that air is carrying out flowing reposefully between two gas chamber up and down.
Among the present invention, the inwall upper edge axial direction of damping body 5 offers four intermediate projections two concave ends and symmetrical curvilinear groove 4 symmetrically, and four curvilinear grooves 4 all are arranged on the middle and lower part of damping body 5.The curvilinear equation of curvilinear groove 4 is y=a|x
3|, wherein-1＜a＜1 and when the quantity of curvilinear groove 4 when the inflation pressure in the many more or damping body 5 is big more, coefficient a is big more, that is to say that coefficient a is determined by the size of inflation pressures in curvilinear groove 4 quantity and the damping body 5.When vehicle driving on rough road surface and vehicle body generation vertical tremor, when jolting, relative movement takes place in piston 6 relative damping bodies 5, piston 6 is reciprocating at the inner chamber of damping body 5 along axial direction, make piston 6 underside portion change in the space of formed two gas chamber up and down, then produce the variation of air pressure, again because the volume flowrate of gas and 1/2 power of pressure are proportionate relationship one time, thereby curvilinear groove 4 is during by above-mentioned equation design, can make when gas pressure changes, and the flow of gas is identical substantially.Thereby the error of the damping constant of said structure can subdue pressure to greatest extent and increase suddenly the time, keep the constant of damping constant to greatest extent.The present invention is simple in structure, easy to install, damping is good, can effectively alleviate the car body caused acceleration problems of too of rapid change up and down, promptly can effectively prevent the impact phenomenon that vehicle body was taken place when vehicle was crossed the hole, alleviate vehicle body greatly and shake the uncomfortable feeling of bringing to the passenger.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (6)
1. the damper of a vehicle damping mechanism, have the bottom tube-like cylinder body and be contained in piston (6) in the described cylinder body in coaxial free to-and-fro motion mode, its bottom tube-like cylinder body is made up of damping body (5) and top cover (3), piston (6) is formed by the piston rod that runs through top cover (3) and with the underside portion that damping body (5) is used, it is characterized in that: the inwall upper edge axial direction of described damping body (5) evenly offers a plurality of intermediate projections two concave ends and symmetrical curvilinear groove (4), and the curvilinear equation of curvilinear groove (4) is y=a|x
3|, wherein-1＜a＜1 and when the quantity of curvilinear groove (4) when the inflation pressure in the many more or damping body (5) is big more, coefficient a is big more; The underside portion shape of the described piston (6) that moves up and down along curvilinear groove (4) is corresponding with damping body (5) cavity shape of curvilinear groove (4) center.
2. according to the damper of the described a kind of vehicle damping mechanism of claim 1, it is characterized in that: the quantity of described curvilinear groove (4) is 1-8.
3. according to the damper of claim 1 or 2 described a kind of vehicle damping mechanisms, it is characterized in that: described top cover (3) is fixedly mounted on the damping body (5) by bolt (1).
4. according to the damper of claim 1 or 2 described a kind of vehicle damping mechanisms, it is characterized in that: the top of the underside portion that described piston (6) is connected with its piston rod is cone shape, and bottom shape is corresponding with damping body (5) cavity shape of curvilinear groove (4) center.
5. according to the damper of claim 1 or 2 described a kind of vehicle damping mechanisms, it is characterized in that: between the described piston rod outside and the top cover (3), be provided with O type circle (2) between top cover (3) bottom outside and damping body (5) inwall.
6. according to the damper of claim 1 or 2 described a kind of vehicle damping mechanisms, it is characterized in that: described a plurality of curvilinear grooves (4) all are arranged on the middle and lower part of damping body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100174525A CN101220842A (en) | 2008-01-31 | 2008-01-31 | Damper of vehicle damping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100174525A CN101220842A (en) | 2008-01-31 | 2008-01-31 | Damper of vehicle damping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101220842A true CN101220842A (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100174525A Pending CN101220842A (en) | 2008-01-31 | 2008-01-31 | Damper of vehicle damping mechanism |
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| CN (1) | CN101220842A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| CN115468056A (en) * | 2022-10-19 | 2022-12-13 | 秦皇岛市政建设集团有限公司 | Pipeline gallows antidetonation down tube |
-
2008
- 2008-01-31 CN CNA2008100174525A patent/CN101220842A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| CN115468056A (en) * | 2022-10-19 | 2022-12-13 | 秦皇岛市政建设集团有限公司 | Pipeline gallows antidetonation down tube |
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Open date: 20080716 |