CN104421367A - Extension tail end buffer type lockable air spring - Google Patents
Extension tail end buffer type lockable air spring Download PDFInfo
- Publication number
- CN104421367A CN104421367A CN201310360777.4A CN201310360777A CN104421367A CN 104421367 A CN104421367 A CN 104421367A CN 201310360777 A CN201310360777 A CN 201310360777A CN 104421367 A CN104421367 A CN 104421367A
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- CN
- China
- Prior art keywords
- piston
- cushion collar
- cylinder barrel
- piston rod
- external diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses an extension tail end buffer type lockable air spring, and relates to the field of air springs, shock absorbers and shock attenuation devices. The extension tail end buffer type lockable air spring comprises a cylinder barrel, a piston rod and a piston, wherein an inner cavity of the cylinder barrel is divided into a rod cavity and a rodless cavity by the piston rod and the piston; a guide sleeve and a bowl-shaped sealing ring are arranged in the front end of the cylinder barrel; a buffer sleeve is arranged at the back side of the bowl-shaped sealing ring; a groove is formed in one end of the buffer sleeve; the buffer sleeve is connected with a one-way valve; the input end of the one-way valve is communicated with the groove, and the output end of the one-way valve is communicated with an inner cavity of the buffer sleeve; a throttle small hole is additionally formed in the buffer sleeve; one end of the throttle small hole is communicated with the groove, and the other end of the throttle small hole is communicated with the inner cavity of the buffer sleeve; the piston comprises a first piston and a third piston connected as a whole; the outer diameter of the first piston is smaller than the outer diameter of the third piston; the outer diameter of the first piston is smaller than the inner diameter of the buffer sleeve; the first piston is connected with the piston rod; and the third piston is arranged in the cylinder barrel in a fitting manner. An extension tail end of the extension tail end buffer type lockable air spring has the functions of speed reduction and buffering.
Description
Technical field
The present invention relates to the field of a kind of air spring, vibration damper, damping device, particularly the structure of lockable type air spring.
Background technique
Air spring is a kind of accessory that can play support, buffering, braking, the highly function such as adjustment and angle adjustment, is widely used in the fields such as medical equipment, automobile, high-speed rail seat, functional furniture, Weaving device, machine-building.Principle is filled with inert gas or gas mixture in airtight cylinder barrel, make the pressure in cavity higher than atmospheric several times or tens times, utilize the cross-section area of piston rod be less than piston cross-section area thus produce pressure difference to realize the motion of piston rod.At present, lockable type air spring stretches end at it does not all have dashpot function, lead in use end impact power of making all larger, easily lead pivot pin fatigue break under the operating mode of impulsive load of connection air spring processed, and generally all produce the larger sound when impulsive load.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, providing a kind of and stretching end buffering type lockable gas spring, making stretching, extension end have dashpot function.
The object of the present invention is achieved like this: stretch end buffering type lockable gas spring, comprise cylinder barrel, piston rod, piston, the inner chamber of cylinder barrel is divided into rod chamber and rodless cavity by piston rod and piston, in piston rod, axially piston rod center hole is set, axially arrange piston center hole in piston, place valve push rods in piston rod center hole, the rear side of valve push rods arranges valve, valve is arranged in piston rod center hole and piston center hole, piston is arranged the resilience hole be connected with piston center hole; Guide sleeve and bowl ring are set in the front end of described cylinder barrel, bowl ring is arranged on the rear side of guide sleeve, the opening end guide sleeve dorsad of bowl ring, piston rod is set in guide sleeve and bowl ring, the rear side of described bowl ring arranges cushion collar, cushion collar interval is nested with on the piston rod, cushion collar arranges away from the periphery, one end of bowl ring the groove be connected with rod chamber, cushion collar connects one-way valve, the input end of one-way valve is connected with described groove, the output terminal of one-way valve and the intracavity inter-connection of cushion collar; Described cushion collar also arranges throttling pore, and one end of throttling pore is connected with described groove, the other end of throttling pore and the intracavity inter-connection of cushion collar; Described piston comprises first piston and the 3rd piston of disjunctor setting, and the external diameter of first piston is less than the external diameter of the 3rd piston, and the external diameter of first piston is less than the internal diameter of cushion collar, and first piston is connected with piston rod, and the 3rd piston is equipped with in cylinder barrel.
Between cylinder barrel of the present invention and cushion collar, seal ring is set.
Piston of the present invention is arranged seal ring mounting groove, cushion seal circle is set in seal ring mounting groove.
Cushion collar of the present invention comprises the first cushion collar and second cushion collar of disjunctor setting, and the internal diameter of the first cushion collar is greater than the external diameter of first piston, and the internal diameter of the second cushion collar is greater than the internal diameter of the first cushion collar, and the second cushion collar is arranged on the rear end of the first cushion collar; Described piston also comprises the second piston, and the second piston disjunctor is arranged between first piston and the 3rd piston, and the external diameter of the second piston is greater than the external diameter of first piston and is less than the external diameter of the 3rd piston, and the external diameter of the second piston is less than the internal diameter of the second cushion collar; Described seal ring mounting groove radial direction is arranged on the periphery of the second piston.
Principle of the present invention is: after inside of air spring is filled with compressed inert, due to the effect of difference power, the assembly that air spring piston bar and the piston connected as one with it form, valve is backed down in the displacement to the right of pressure valve push rods, after now air spring will unlock, the medium (oil or gas) in rod chamber, will by thinner section position peripheral clearance in the middle part of resilience aperture valve, in inflow rodless cavity, piston rod assembly will be stretched out.
When close to when stretching end, be arranged on the cushion seal circle on piston, will import on the endoporus inwall of cushion collar, now between cushion collar intermediate portion to bowl ring, the medium of chamber can only to be dammed aperture by buffering, flows in rodless cavity via rod chamber.Because the aperture that dams that cushion collar is arranged is smaller, the speed that its piston rod assembly is stretched over end will be slowed down, and achieves the pooling feature of end with this.
Simultaneously due to the damping function of end cushion collar, air spring its initial startup force value in compression process also will be increased.So be separately provided with an one-way valve on cushion collar, when opening valve, when starting pressurized gas spring piston bar, one-way valve will be opened.What the medium in rod chamber single pass-through cushion collar was not arranged dam, and aperture flows into, and most of medium flows into chamber in the middle of cushion collar by one-way valve simultaneously.To reduce the increase being cushioned the startup force value caused by end a bit, when to realize not increasing initial start force value, achieve the pooling feature of end well.
The present invention, by above design, can realize the pooling feature of the stretching, extension end of air spring well, to realize reducing to impact, reduces the sound, improves the comfort of product, improving product quality.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
In figure, 1 piston rod, 2 valve push rods, 3 guide sleeves, 4 bowl rings, 5 seal rings, 6 cushion collars, 6-1 first cushion collar, 6-2 second cushion collar, 7 one-way valves, 8 valves, 9 pistons, 9-1 first piston, 9-2 second piston, 9-3 the 3rd piston, 10 cushion seal circles, 11 cylinder barrels, 12 rodless cavities, 13 resilience holes, 14 rod chambers, 15 grooves, 16 throttling pore, 17 piston rod center holes, 18 piston center holes, 19 seal ring mounting grooves.
Embodiment
As shown in Figure 1, for stretching end buffering type lockable gas spring, comprise cylinder barrel 11, piston rod 1, piston 9, the inner chamber of cylinder barrel 11 is divided into rod chamber 14 and rodless cavity 12 by piston rod 1 and piston 9, in piston rod 1, axially piston rod center hole 17 is set, in piston 9, axially piston center hole 18 is set, valve push rods 2 is placed in piston rod center hole 17, the rear side of valve push rods 2 arranges valve 8, valve 8 is arranged in piston rod center hole 17 and piston center hole 18, piston 9 is arranged the resilience hole 13 be connected with piston center hole 18.
Guide sleeve 3 is set in the front end of cylinder barrel 11, bowl ring 4 and cushion collar 6, shape seal ring 4 is arranged on the rear side of guide sleeve 3, the opening end guide sleeve 3 dorsad of bowl ring 4, cushion collar 6 is arranged on the rear side of bowl ring 4, piston rod 1 is set in guide sleeve 3, in bowl ring 4 and cushion collar 6, interval is had between cushion collar 6 and piston rod 1, seal ring 5 is set between cylinder barrel 11 and cushion collar 6, cushion collar 6 arranges away from the periphery, one end of bowl ring 4 groove 15 be connected with rod chamber 14, cushion collar 6 connects one-way valve 7, the input end of one-way valve 7 is connected with groove 15, the output terminal of one-way valve 7 and the intracavity inter-connection of cushion collar 6.On cushion collar 6, also radial direction arranges throttling pore 16, and one end of throttling pore 16 is connected with groove 15, the other end of throttling pore 16 and the intracavity inter-connection of cushion collar 6.
Cushion collar 6 comprises the first cushion collar 6-1 and the second cushion collar 6-2 of disjunctor setting, and the internal diameter of the first cushion collar 6-1 is less than the internal diameter of the second cushion collar 6-2, and the second cushion collar 6-2 is arranged on the rear end of the first cushion collar 6-1.Piston 9 comprise external diameter from small to large successively disjunctor arrange first piston 9-1, the second piston 9-2 and the 3rd piston 9-3, first piston 9-1 is connected with piston rod 1, the external diameter of first piston 9-1 is less than the internal diameter of the first cushion collar 6-1, the external diameter of the second piston 9-2 is less than the internal diameter of the second cushion collar 6-2, the outer periphery of the second piston 9-2 arranges seal ring mounting groove 19, arranges cushion seal circle 10 in seal ring mounting groove 19.
Claims (4)
1. stretch end buffering type lockable gas spring, comprise cylinder barrel, piston rod, piston, the inner chamber of cylinder barrel is divided into rod chamber and rodless cavity by piston rod and piston, in piston rod, axially piston rod center hole is set, axially arrange piston center hole in piston, place valve push rods in piston rod center hole, the rear side of valve push rods arranges valve, valve is arranged in piston rod center hole and piston center hole, piston is arranged the resilience hole be connected with piston center hole; Guide sleeve and bowl ring are set in the front end of described cylinder barrel, bowl ring is arranged on the rear side of guide sleeve, the opening end guide sleeve dorsad of bowl ring, piston rod is set in guide sleeve and bowl ring, it is characterized in that: the rear side of described bowl ring arranges cushion collar, cushion collar interval is nested with on the piston rod, cushion collar arranges away from the periphery, one end of bowl ring the groove be connected with rod chamber, cushion collar connects one-way valve, the input end of one-way valve is connected with described groove, the output terminal of one-way valve and the intracavity inter-connection of cushion collar; Described cushion collar also arranges throttling pore, and one end of throttling pore is connected with described groove, the other end of throttling pore and the intracavity inter-connection of cushion collar; Described piston comprises first piston and the 3rd piston of disjunctor setting, and the external diameter of first piston is less than the external diameter of the 3rd piston, and the external diameter of first piston is less than the internal diameter of cushion collar, and first piston is connected with piston rod, and the 3rd piston is equipped with in cylinder barrel.
2. stretching, extension end buffering type lockable gas spring according to claim 1, is characterized in that: arrange seal ring between described cylinder barrel and cushion collar.
3. stretching, extension end buffering type lockable gas spring according to claim 1, is characterized in that: described piston is arranged seal ring mounting groove, arranges cushion seal circle in seal ring mounting groove.
4. the stretching, extension end buffering type lockable gas spring according to claim 1 or 3, it is characterized in that: described cushion collar comprises the first cushion collar and second cushion collar of disjunctor setting, the internal diameter of the first cushion collar is greater than the external diameter of first piston, the internal diameter of the second cushion collar is greater than the internal diameter of the first cushion collar, and the second cushion collar is arranged on the rear end of the first cushion collar; Described piston also comprises the second piston, and the second piston disjunctor is arranged between first piston and the 3rd piston, and the external diameter of the second piston is greater than the external diameter of first piston and is less than the external diameter of the 3rd piston, and the external diameter of the second piston is less than the internal diameter of the second cushion collar; Described seal ring mounting groove radial direction is arranged on the periphery of the second piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360777.4A CN104421367A (en) | 2013-08-19 | 2013-08-19 | Extension tail end buffer type lockable air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310360777.4A CN104421367A (en) | 2013-08-19 | 2013-08-19 | Extension tail end buffer type lockable air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104421367A true CN104421367A (en) | 2015-03-18 |
Family
ID=52971198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310360777.4A Pending CN104421367A (en) | 2013-08-19 | 2013-08-19 | Extension tail end buffer type lockable air spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104421367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195092A (en) * | 2016-08-31 | 2016-12-07 | 广州市完美车业有限公司 | A kind of air spring improving bicycle front fork shock-proof effect |
| CN111749120A (en) * | 2020-07-08 | 2020-10-09 | 中南大学 | Viscous damping system, bridge comprising same and bridge damping method |
-
2013
- 2013-08-19 CN CN201310360777.4A patent/CN104421367A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195092A (en) * | 2016-08-31 | 2016-12-07 | 广州市完美车业有限公司 | A kind of air spring improving bicycle front fork shock-proof effect |
| CN106195092B (en) * | 2016-08-31 | 2018-09-28 | 广州市完美车业有限公司 | A kind of gas spring improving bicycle front fork shock-proof effect |
| CN111749120A (en) * | 2020-07-08 | 2020-10-09 | 中南大学 | Viscous damping system, bridge comprising same and bridge damping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
|
| WD01 | Invention patent application deemed withdrawn after publication |