CN207814302U - A kind of gas spring piston component sealing structure - Google Patents
A kind of gas spring piston component sealing structure Download PDFInfo
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- CN207814302U CN207814302U CN201721610478.1U CN201721610478U CN207814302U CN 207814302 U CN207814302 U CN 207814302U CN 201721610478 U CN201721610478 U CN 201721610478U CN 207814302 U CN207814302 U CN 207814302U
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- piston
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- vibration damping
- air flue
- seal
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Abstract
The utility model discloses a kind of gas spring piston component sealing structure, piston seal air flue is offered on piston, piston seal is provided in piston seal air passage outlet end, and institute's piston seal is contacted with cylinder sidewall；Piston seal tracheal entrance end is connected to cylinder interior, so that the gas in cylinder is entered extrusion piston sealing element in piston seal air flue from piston seal tracheal entrance end, is made piston seal compression cylinder side wall.In the sealing structure, it can be compensated automatically after sealing part abrasion.
Description
Technical field
The utility model is related to automotive suspensions, refer in particular to a kind of gas spring piston component sealing structure.
Background technology
It is well known that automotive suspension can reduce the vibration and impact that automobile is subject in the process of moving, enable automobile
Safer, comfortable traveling；Automotive suspension uses extensive in the car.It includes damping element and elastic element to cycle suspension,
The elastic element of existing automotive suspension is usually leaf spring and air spring；Existing elastic element light plate spring rate and again
Amount is larger, increases the overall weight of vehicle body.
In existing commercial car, generally use air spring, air spring is made of rubber bag tank and high pressure gas filling equipment.
Rubber bag tank rigidity has that limitation, fragile, such environmental effects are big, explosive capsule；High pressure gas filling equipment is by dedicated pipeline and pressure
Contracting mechanism is at maintenance cost is high, it is big to take up space, influences chassis layout.
Simultaneously in existing air spring, the sealing element between piston and cylinder is easy to wear, and gas leakage is caused after abrasion, reduces empty
The job stability of gas spring.Simultaneously with changing sealing element trouble.
Utility model content
The purpose of this utility model is that：In view of the above problems, a kind of gas spring piston component sealing is provided
Structure in the sealing structure, can compensate automatically after sealing part abrasion.
The technical solution adopted in the utility model is as follows：
The utility model discloses a kind of gas spring piston component sealing structure, piston seal gas is offered on piston
Road is provided with piston seal in piston seal air passage outlet end, and institute's piston seal is contacted with cylinder sidewall；The work
Plug sealing air flue input end is connected to cylinder interior, and the gas in cylinder is made to enter piston seal from piston seal tracheal entrance end
Extrusion piston sealing element in air flue makes piston seal compression cylinder side wall.
Due to above structure, gas in cylinder extrusion piston sealing element always, after piston seal is worn, piston is close
The piston seal sealed in air passage outlet end is squeezed out by air pressure from piston seal air passage outlet end, the mill of compensating piston sealing element
Damage.Make to seal always between piston and cylinder.
Further, the piston seal air flue includes being opened on piston, close to the vibration damping end piston of vibration damping working cylinder
Air flue is sealed, is provided with vibration damping end piston seal in vibration damping end piston seal air passage outlet end, institute's vibration damping end piston is close
Sealing is contacted with cylinder sidewall；It is connected to inside the vibration damping end piston seal tracheal entrance end and vibration damping working cylinder, makes vibration damping work
The gas made in cylinder enters extruding vibration damping end piston in the piston seal air flue of vibration damping end from vibration damping end piston seal tracheal entrance end
Sealing element makes vibration damping end piston seal compression cylinder side wall；
Further, the piston seal air flue includes being opened on piston, close to the spring terminal piston of spring works cylinder
Air flue is sealed, is provided with spring terminal piston seal in the spring terminal piston seal air passage outlet end, institute's spring terminal piston is close
Sealing is contacted with cylinder sidewall；The spring terminal piston seal tracheal entrance end is connected to spring works cylinder interior, makes spring work
The gas made in cylinder enters extruding spring terminal piston in spring terminal piston seal air flue from spring terminal piston seal tracheal entrance end
Sealing element makes spring terminal piston seal compression cylinder side wall.
Further, it is connected with piston rod on piston, piston rod seal is provided at institute's piston rod；The piston is close
Seal structure includes the piston rod packing air flue being arranged on piston rod guide sleeve；On guide sleeve described in the piston rod packing air flue
It is provided with piston rod packing air flue, piston rod packing air passage outlet end is provided with piston rod seal component, institute's piston rod packing
Part is contacted with piston rod side wall；Piston rod packing tracheal entrance end is connected to cylinder interior, makes gas in cylinder from work
Rod seal tracheal entrance end enters extrusion piston shaft seal in piston rod packing air flue, makes piston rod seal component clamping piston
Bar side wall.
Further, it is also installed with piston lubrication oil duct on piston, is provided in the piston lubrication oil duct input end
Sliding block, the sliding block side are contacted with the gas in cylinder, and the other side is contacted with the lubricating oil in piston lubrication oil duct；It is described
Piston lubrication oil passage outlet end is contacted with cylinder sidewall；Gas extrusion sliding block in cylinder, makes sliding block into piston lubrication oil duct
It is mobile, the lubricating oil in piston lubrication oil duct is squeezed out from piston lubrication oil passage outlet.
Due to above structure, lubricating oil brings out from piston lubrication oil passage outlet and is contacted afterwards with cylinder sidewall, forms lubrication
Oil film, oil film can lubricate can be with lubricating action, while the oil film can also play a part of sealing gas.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
Sealing element on piston component can compensate under the squeezing action of air pressure after abrasion automatically, make piston component with
It is sealed always between cylinder, ensure that the stability of sealing, reduce the frequent replacement of sealing element, it is easy to use, save sealing element
Use cost.The lubricating oil in oil leab also plays lubrication and oil-tightening effect simultaneously.
Description of the drawings
Fig. 1 is the overall structure figure of gas spring；
Fig. 2 is piston sealing structure figure；
Fig. 3 is piston rod seal figure.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Upper and lower, left and right position relationship described in present embodiment is as shown in Figure 1.
A kind of gas spring it include inflator 10, cylinder 24, piston component, the inflator 10 include 10 upper end cover 6 of inflator
With 10 bottom end cover 14 of inflator；The cylinder 24 is placed in inflator 10；Piston component, the piston component packet are provided in cylinder 24
Piston rod 5 and piston 9 are included, 10 upper end cover 6 of inflator is run through in 5 upper end of the piston rod, stretches out outside inflator 10；Under the piston rod 5
End is connected with piston 9；Cylinder 24 is separated into vibration damping working cylinder 25 and spring works cylinder 11, the vibration damping working cylinder by institute's piston 9
25 and spring works cylinder 11 in be filled with high pressure gas；
5 inside of the piston rod is cavity, and the cavity is vibration damping air storing cavity 2, and the vibration damping air storing cavity 2 works with vibration damping
Cylinder 25 is connected to, and vibration damping valve body 31 is provided between the vibration damping working cylinder 25 and vibration damping air storing cavity 2, institute's vibration damping valve body 31 is for controlling
The break-make of vibration damping working cylinder 25 and vibration damping air storing cavity 2；Vibration damping throttle orifice 29, the vibration damping are additionally provided on the vibration damping valve body 31
Vibration damping working cylinder 25 is connected to by throttle orifice 29 with vibration damping air storing cavity 2；
The vibration damping valve body 31 is non-return valve, only allows the gas flow vibration damping working cylinder 25 in vibration damping air storing cavity 2, and
Gas in vibration damping working cylinder 25 can only flow to vibration damping air storing cavity 2 by vibration damping throttle orifice 29；
It is provided with vibration damping valve body installation cavity on the piston 9, the vibration damping valve body installation cavity and vibration damping working cylinder 25 and subtracts
The air storing cavity that shakes is connected to, and the vibration damping valve body 31 is mounted in vibration damping valve body installation cavity；The vibration damping valve body installation cavity is inserted into piston 9
It is interior to be threadedly coupled with piston 9.
Upper end is provided with 9 bar end socket 4 of piston on institute's piston rod 5, and vibration damping working cylinder inflation air nozzle 3 is provided on end socket 4, is subtracted
The working cylinder that shakes inflation air nozzle 3 is connected to vibration damping air storing cavity 2.
Vehicle bridge connector 1 is connected on 9 bar end socket 4 of the piston, the vehicle bridge connector 1 is for connecting wheel.
The spring works cylinder 11 is connected to spring air storing cavity 22, is set between the spring works cylinder 11 and spring air storing cavity 22
It is equipped with gas spring valve body 12, the gas spring valve body 12 is used to control the break-make of spring works cylinder 11 and spring air storing cavity 22, institute
It states and is additionally provided with gas spring throttle orifice 30 on gas spring valve body 12, the gas spring throttle orifice 30 is by spring works cylinder 11 and spring
Air storing cavity 22 is connected to.The spring air storing cavity 22 is arranged in inflator 10, is located at 24 outside of cylinder；
The gas spring valve body 12 is non-return valve, only allows the gas flow spring air storing cavity 22 in spring works cylinder 11
It is interior, and the gas in spring air storing cavity 22 can only flow to spring works cylinder 11 by gas spring throttle orifice 30.
10 bottom of the inflator is provided with vehicle frame connector, and the vehicle frame connector is used for connecting vehicle frame；
Spring works cylinder inflation air nozzle 17, institute's spring works cylinder inflation air nozzle 17 and bullet are provided on 10 side wall of the inflator
Spring air storing cavity 22 is connected to.
5 guide sleeve 7 of piston rod is provided in the vibration damping working cylinder 25；As shown in Figure 1,5 guide sleeve of piston rod, 7 small end with
Cylinder 24 contacts, and big end is contacted with inflator 10.
Piston seal air flue is provided on the piston 9, the piston seal air passage outlet is provided with piston seal in end
Part, institute's piston seal are contacted with 24 side wall of cylinder；Piston seal tracheal entrance end is connected to 24 inside of cylinder, makes cylinder
Gas in 24 enters extrusion piston sealing element in piston seal air flue from piston seal tracheal entrance end, makes piston seal pressure
24 side wall of tight cylinder.
The piston seal air flue includes vibration damping end piston seal air flue 23 and spring terminal sealing air flue；Vibration damping end piston is close
Envelope air flue is provided with vibration damping end piston seal in 23 outlet end, and institute's vibration damping end piston seal is contacted with 24 side wall of cylinder；Institute
It states 23 input end of vibration damping end piston seal air flue and the inside of vibration damping working cylinder 25 is connected to, make gas in vibration damping working cylinder 25 from subtracting
23 input end of end piston seal air flue that shakes, which enters in vibration damping end piston seal air flue 23, squeezes vibration damping end piston seal, makes vibration damping
Hold 24 side wall of piston seal compression cylinder.
It is provided with spring terminal piston seal 20, institute's spring terminal piston in 19 outlet end of spring terminal piston seal air flue
Sealing element 20 is contacted with 24 side wall of cylinder；Connect inside 19 input end of spring terminal piston seal air flue and spring works cylinder 11
It is logical, so that the gas in spring works cylinder 11 is entered spring terminal piston seal air flue 19 from 19 input end of spring terminal piston seal air flue
Interior extruding spring terminal piston seal 20 makes 20 compression cylinder of spring terminal piston seal, 24 side wall.
Piston rod packing air flue 28 is provided on the guide sleeve 7,28 outlet end of piston rod packing air flue is provided with
Piston rod seal component 33, institute's piston rod seal component 33 are contacted with 5 side wall of piston rod；28 input end of piston rod packing air flue with
The 25 inside connection of vibration damping working cylinder, makes the gas in vibration damping working cylinder 25 enter piston rod from 28 input end of piston rod packing air flue
Extrusion piston shaft seal 33 in air flue 28 is sealed, 33 clamping piston bar of piston rod seal component, 5 side wall is made.
Dust seal 8 is additionally provided on the piston rod 5, the dust seal 8 is arranged on piston rod 5 close to gas
At 10 upper end covers 6 of cylinder.
It is provided with piston lubrication oil duct 21 on the piston 9, sliding block is provided in 21 input end of piston lubrication oil duct
18,18 side of the sliding block is contacted with the gas in cylinder 24, and the other side is contacted with the lubricating oil in piston lubrication oil duct 21；
21 outlet end of piston lubrication oil duct is contacted with 24 side wall of cylinder；Gas extrusion sliding block 18 in cylinder 24, make sliding block 18 to
It is moved in piston lubrication oil duct 21, the lubricating oil in piston lubrication oil duct 21 is exported from piston lubrication oil duct 21 and is squeezed out.
The outlet of piston lubrication oil duct 21 is between spring terminal piston seal 20 and vibration damping end piston seal, profit
Lubricating oil is contacted from 21 outlet end of piston lubrication oil duct is out rear with 24 side wall of cylinder, forms lubricating oil film, oil film can play profit
Sliding effect, while the oil film can also play a part of sealing gas；And spring terminal piston seal 20 and vibration damping end piston are close
Sealing is contacted with isolation lubricating oil film with the gas in spring works chamber and vibration damping working chamber.
The work process of the utility model gas spring is as follows：
In vehicle traveling process, when wheel is impacted by convex road surface, piston rod 5 is moved with piston 9 in cylinder 24
Dynamic, 9 compressed spring working cylinder of piston, 11 volume makes the pressure in spring works cylinder 11 be more than the pressure in spring air storing cavity 22,
So that the gas in spring works cylinder 11 is washed gas spring valve seal ball 16 open from gas spring valve body return-air hole 13, gas is crossed from gas spring
Hole 34 enters in spring air storing cavity 22；Spring works cylinder 11 is used to absorb the energy generated when impact at this time；
When 9 compressed spring 11 volume of working cylinder of piston, 25 volume of vibration damping working cylinder becomes larger, the pressure in vibration damping working cylinder 25
Less than the pressure in vibration damping air storing cavity 2, the gas in vibration damping air storing cavity 2 is made to wash vibration damping valve body 31 open from vibration damping valve body return-air hole 32
Ball sealer 27 enters from vibration damping air passing hole 26 in vibration damping working cylinder 25；It is conducive to spring works cylinder 11 so preferably to absorb
Impact the energy generated.
After having crossed convex road surface, impact releases, and piston 9 resets, and is inhaled when the gas release in spring works cylinder 11 is impacted at this time
The energy of receipts, 11 volume of spring works cylinder become larger, and the pressure in spring air storing cavity 22 is more than the pressure in spring works cylinder 11, gas
Spring valve body 12 is closed, and the gas in spring air storing cavity 22 is made to enter spring works cylinder 11 from gas spring throttle orifice 30.Spring work
When making the energy absorbed when the release impact of cylinder 11, piston 9 compresses the volume of vibration damping working cylinder 25, makes the pressure in vibration damping working cylinder 25
Power is more than the pressure in vibration damping air storing cavity 2, and vibration damping valve body 31 is closed, and makes gas in vibration damping working cylinder 25 from vibration damping throttle orifice 29
Into in vibration damping air storing cavity 2, the impact energy after the decaying of 11 gas release of spring works cylinder is absorbed, then on gas temperature
It rises, impact energy is discharged into the atmosphere in the form of thermal energy.
In vehicle traveling process, when wheel is impacted by recessed road surface, piston rod 5 is moved with piston 9 in cylinder 24
Dynamic, piston 9 compresses 25 volume of vibration damping working cylinder, and the pressure in vibration damping working cylinder 25 is made to be more than the pressure in vibration damping air storing cavity 2, this
When, vibration damping valve body 31 is closed, and so that the gas in vibration damping working cylinder 25 is passed through vibration damping throttle orifice 29 and is entered in vibration damping air storing cavity 2；This
When the energy that generates when being impacted for absorbing of vibration damping working cylinder 25；
When piston 9 presses vibration damping 25 volume of working cylinder, 11 volume of spring works cylinder becomes larger, and the pressure in spring works cylinder 11 is small
Pressure in spring air storing cavity 22, gas spring valve body 12 are closed, and the gas in vibration damping air storing cavity 2 is made to pass through gas spring throttle orifice
30 enter in spring works cylinder 11；It is come into full contact with conducive to wheel and ground.
After having crossed convex road surface, impact releases, and piston 9 resets, and is inhaled when the gas release in vibration damping working cylinder 25 is impacted at this time
The energy of receipts, 25 volume of vibration damping working cylinder become larger, and the pressure in vibration damping air storing cavity 2 is more than the pressure in vibration damping working cylinder 25, makes
Gas in vibration damping air storing cavity 2 washes 31 ball sealer 27 of vibration damping valve body open from vibration damping valve body return-air hole 32, from vibration damping air passing hole 26 into
Enter to enter in vibration damping working cylinder 25.When the energy absorbed when the release impact of vibration damping working cylinder 25,9 compressed spring working cylinder 11 of piston
Volume, so that pressure in spring works cylinder 11 is more than the pressure in spring air storing cavity 22, make the gas in spring works cylinder 11
Gas spring valve seal ball 16 is washed open from gas spring valve body return-air hole 13, enters spring air storing cavity 22 from gas spring air passing hole 34
It is interior, the impact energy after the decaying of 25 gas release of vibration damping working cylinder is absorbed, then gas temperature rises, and impact energy is with heat
The form of energy is discharged into the atmosphere.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of gas spring piston component sealing structure, it is characterised in that：Piston（9）On offer piston seal air flue, institute
It states and is provided with piston seal, institute's piston seal and cylinder in piston seal air passage outlet end（24）Side wall contacts；The work
Plug sealing air flue input end and cylinder（24）Inside connection, makes cylinder（24）Interior gas enters from piston seal tracheal entrance end
Extrusion piston sealing element in piston seal air flue, makes piston seal compression cylinder（24）Side wall.
2. gas spring piston component sealing structure according to claim 1, it is characterised in that：The piston seal air flue
Including being opened in piston（9）On, close to vibration damping working cylinder（25）Vibration damping end piston seal air flue（23）, vibration damping end piston
Seal air flue（23）Vibration damping end piston seal, institute's vibration damping end piston seal and cylinder are provided in outlet end（24）Side wall connects
It touches；The vibration damping end piston seal air flue（23）Input end and vibration damping working cylinder（25）Inside connection, makes vibration damping working cylinder（25）
Interior gas is from vibration damping end piston seal air flue（23）Input end enters vibration damping end piston seal air flue（23）Interior extruding vibration damping end
Piston seal makes vibration damping end piston seal compression cylinder（24）Side wall.
3. gas spring piston component sealing structure according to claim 1, it is characterised in that：The piston seal air flue
Including being opened in piston（9）On, close to spring works cylinder（11）Spring terminal piston seal air flue（19）, the spring terminal piston
Seal air flue（19）Spring terminal piston seal is provided in outlet end（20）, institute's spring terminal piston seal（20）With cylinder
（24）Side wall contacts；The spring terminal piston seal air flue（19）Input end and spring works cylinder（11）Inside connection, makes spring
Working cylinder（11）Interior gas is from spring terminal piston seal air flue（19）Input end enters spring terminal piston seal air flue（19）It is interior
Squeeze spring terminal piston seal（20）, make spring terminal piston seal（20）Compression cylinder（24）Side wall.
4. gas spring piston component sealing structure according to claim 1, it is characterised in that：Piston（9）On be connected with
Piston rod（5）, institute's piston rod（5）Place is provided with piston rod seal；The piston sealing structure includes being arranged in piston rod
Guide sleeve（7）On piston rod packing air flue（28）；The piston rod packing air flue（28）Outlet end is provided with piston rod packing
Part（33）, institute's piston rod seal component（33）With piston rod（5）Side wall contacts；The piston rod packing air flue（28）Input end and gas
Cylinder（24）Inside connection, makes cylinder（24）Interior gas is from piston rod packing air flue（28）Input end enters piston rod packing air flue
（28）Interior extrusion piston shaft seal（33）, make piston rod seal component（33）Clamping piston bar（5）Side wall.
5. gas spring piston component sealing structure according to claim 1, it is characterised in that：Piston（9）On also open up
It is equipped with piston lubrication oil duct（21）, the piston lubrication oil duct（21）Sliding block is provided in input end（18）, the sliding block（18）
Side and cylinder（24）Interior gas contact, the other side and piston lubrication oil duct（21）Interior lubricating oil contact；The piston profit
Grease way（21）Outlet end and cylinder（24）Side wall contacts；Cylinder（24）Interior gas extrusion sliding block（18）, make sliding block（18）To
Piston lubrication oil duct（21）Interior movement, by piston lubrication oil duct（21）Interior lubricating oil is from piston lubrication oil duct（21）Outlet is squeezed
Go out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610478.1U CN207814302U (en) | 2017-11-28 | 2017-11-28 | A kind of gas spring piston component sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610478.1U CN207814302U (en) | 2017-11-28 | 2017-11-28 | A kind of gas spring piston component sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN207814302U true CN207814302U (en) | 2018-09-04 |
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ID=63334520
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721610478.1U Active CN207814302U (en) | 2017-11-28 | 2017-11-28 | A kind of gas spring piston component sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939890A (en) * | 2017-11-28 | 2018-04-20 | 汪平和 | A kind of gas spring piston component sealing structure |
-
2017
- 2017-11-28 CN CN201721610478.1U patent/CN207814302U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939890A (en) * | 2017-11-28 | 2018-04-20 | 汪平和 | A kind of gas spring piston component sealing structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181126 Address after: 641421 Xiyin Village, Jiajia Town, Jiayang City, Chengdu City, Sichuan Province Patentee after: Sichuan provincial and air pressure shock absorber Co., Ltd. Address before: 641421 No. 390 West Central Road, Jiajia Town, Jianyang City, Chengdu City, Sichuan Province Patentee before: Wang Pinghe |